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
31 * Complete reset on PciErr
32 * Consider Rx interrupt mitigation using TimerIntr
33 * Investigate using skb->priority with h/w VLAN priority
34 * Investigate using High Priority Tx Queue with skb->priority
35 * Adjust Rx FIFO threshold and Max Rx DMA burst on Rx FIFO error
36 * Adjust Tx FIFO threshold and Max Tx DMA burst on Tx FIFO error
37 * Implement Tx software interrupt mitigation via
39 * The real minimum of CP_MIN_MTU is 4 bytes. However,
40 for this to be supported, one must(?) turn on packet padding.
41 * Support external MII transceivers (patch available)
44 * TX checksumming is considered experimental. It is off by
45 default, use ethtool to turn it on.
49 #define DRV_NAME "8139cp"
50 #define DRV_VERSION "1.3"
51 #define DRV_RELDATE "Mar 22, 2004"
54 #include <linux/module.h>
55 #include <linux/moduleparam.h>
56 #include <linux/kernel.h>
57 #include <linux/compiler.h>
58 #include <linux/netdevice.h>
59 #include <linux/etherdevice.h>
60 #include <linux/init.h>
61 #include <linux/pci.h>
62 #include <linux/dma-mapping.h>
63 #include <linux/delay.h>
64 #include <linux/ethtool.h>
65 #include <linux/mii.h>
66 #include <linux/if_vlan.h>
67 #include <linux/crc32.h>
70 #include <linux/tcp.h>
71 #include <linux/udp.h>
72 #include <linux/cache.h>
75 #include <asm/uaccess.h>
77 /* VLAN tagging feature enable/disable */
78 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
79 #define CP_VLAN_TAG_USED 1
80 #define CP_VLAN_TX_TAG(tx_desc,vlan_tag_value) \
81 do { (tx_desc)->opts2 = cpu_to_le32(vlan_tag_value); } while (0)
83 #define CP_VLAN_TAG_USED 0
84 #define CP_VLAN_TX_TAG(tx_desc,vlan_tag_value) \
85 do { (tx_desc)->opts2 = 0; } while (0)
88 /* These identify the driver base version and may not be removed. */
89 static char version[] =
90 KERN_INFO DRV_NAME ": 10/100 PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")\n";
92 MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
93 MODULE_DESCRIPTION("RealTek RTL-8139C+ series 10/100 PCI Ethernet driver");
94 MODULE_VERSION(DRV_VERSION);
95 MODULE_LICENSE("GPL");
97 static int debug = -1;
98 module_param(debug, int, 0);
99 MODULE_PARM_DESC (debug, "8139cp: bitmapped message enable number");
101 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
102 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
103 static int multicast_filter_limit = 32;
104 module_param(multicast_filter_limit, int, 0);
105 MODULE_PARM_DESC (multicast_filter_limit, "8139cp: maximum number of filtered multicast addresses");
107 #define PFX DRV_NAME ": "
109 #define CP_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
112 #define CP_NUM_STATS 14 /* struct cp_dma_stats, plus one */
113 #define CP_STATS_SIZE 64 /* size in bytes of DMA stats block */
114 #define CP_REGS_SIZE (0xff + 1)
115 #define CP_REGS_VER 1 /* version 1 */
116 #define CP_RX_RING_SIZE 64
117 #define CP_TX_RING_SIZE 64
118 #define CP_RING_BYTES \
119 ((sizeof(struct cp_desc) * CP_RX_RING_SIZE) + \
120 (sizeof(struct cp_desc) * CP_TX_RING_SIZE) + \
122 #define NEXT_TX(N) (((N) + 1) & (CP_TX_RING_SIZE - 1))
123 #define NEXT_RX(N) (((N) + 1) & (CP_RX_RING_SIZE - 1))
124 #define TX_BUFFS_AVAIL(CP) \
125 (((CP)->tx_tail <= (CP)->tx_head) ? \
126 (CP)->tx_tail + (CP_TX_RING_SIZE - 1) - (CP)->tx_head : \
127 (CP)->tx_tail - (CP)->tx_head - 1)
129 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
130 #define CP_INTERNAL_PHY 32
132 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
133 #define RX_FIFO_THRESH 5 /* Rx buffer level before first PCI xfer. */
134 #define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 */
135 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
136 #define TX_EARLY_THRESH 256 /* Early Tx threshold, in bytes */
138 /* Time in jiffies before concluding the transmitter is hung. */
139 #define TX_TIMEOUT (6*HZ)
141 /* hardware minimum and maximum for a single frame's data payload */
142 #define CP_MIN_MTU 60 /* TODO: allow lower, but pad */
143 #define CP_MAX_MTU 4096
146 /* NIC register offsets */
147 MAC0 = 0x00, /* Ethernet hardware address. */
148 MAR0 = 0x08, /* Multicast filter. */
149 StatsAddr = 0x10, /* 64-bit start addr of 64-byte DMA stats blk */
150 TxRingAddr = 0x20, /* 64-bit start addr of Tx ring */
151 HiTxRingAddr = 0x28, /* 64-bit start addr of high priority Tx ring */
152 Cmd = 0x37, /* Command register */
153 IntrMask = 0x3C, /* Interrupt mask */
154 IntrStatus = 0x3E, /* Interrupt status */
155 TxConfig = 0x40, /* Tx configuration */
156 ChipVersion = 0x43, /* 8-bit chip version, inside TxConfig */
157 RxConfig = 0x44, /* Rx configuration */
158 RxMissed = 0x4C, /* 24 bits valid, write clears */
159 Cfg9346 = 0x50, /* EEPROM select/control; Cfg reg [un]lock */
160 Config1 = 0x52, /* Config1 */
161 Config3 = 0x59, /* Config3 */
162 Config4 = 0x5A, /* Config4 */
163 MultiIntr = 0x5C, /* Multiple interrupt select */
164 BasicModeCtrl = 0x62, /* MII BMCR */
165 BasicModeStatus = 0x64, /* MII BMSR */
166 NWayAdvert = 0x66, /* MII ADVERTISE */
167 NWayLPAR = 0x68, /* MII LPA */
168 NWayExpansion = 0x6A, /* MII Expansion */
169 Config5 = 0xD8, /* Config5 */
170 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
171 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
172 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
173 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
174 RxRingAddr = 0xE4, /* 64-bit start addr of Rx ring */
175 TxThresh = 0xEC, /* Early Tx threshold */
176 OldRxBufAddr = 0x30, /* DMA address of Rx ring buffer (C mode) */
177 OldTSD0 = 0x10, /* DMA address of first Tx desc (C mode) */
179 /* Tx and Rx status descriptors */
180 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
181 RingEnd = (1 << 30), /* End of descriptor ring */
182 FirstFrag = (1 << 29), /* First segment of a packet */
183 LastFrag = (1 << 28), /* Final segment of a packet */
184 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
185 MSSShift = 16, /* MSS value position */
186 MSSMask = 0xfff, /* MSS value: 11 bits */
187 TxError = (1 << 23), /* Tx error summary */
188 RxError = (1 << 20), /* Rx error summary */
189 IPCS = (1 << 18), /* Calculate IP checksum */
190 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
191 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
192 TxVlanTag = (1 << 17), /* Add VLAN tag */
193 RxVlanTagged = (1 << 16), /* Rx VLAN tag available */
194 IPFail = (1 << 15), /* IP checksum failed */
195 UDPFail = (1 << 14), /* UDP/IP checksum failed */
196 TCPFail = (1 << 13), /* TCP/IP checksum failed */
197 NormalTxPoll = (1 << 6), /* One or more normal Tx packets to send */
198 PID1 = (1 << 17), /* 2 protocol id bits: 0==non-IP, */
199 PID0 = (1 << 16), /* 1==UDP/IP, 2==TCP/IP, 3==IP */
203 TxFIFOUnder = (1 << 25), /* Tx FIFO underrun */
204 TxOWC = (1 << 22), /* Tx Out-of-window collision */
205 TxLinkFail = (1 << 21), /* Link failed during Tx of packet */
206 TxMaxCol = (1 << 20), /* Tx aborted due to excessive collisions */
207 TxColCntShift = 16, /* Shift, to get 4-bit Tx collision cnt */
208 TxColCntMask = 0x01 | 0x02 | 0x04 | 0x08, /* 4-bit collision count */
209 RxErrFrame = (1 << 27), /* Rx frame alignment error */
210 RxMcast = (1 << 26), /* Rx multicast packet rcv'd */
211 RxErrCRC = (1 << 18), /* Rx CRC error */
212 RxErrRunt = (1 << 19), /* Rx error, packet < 64 bytes */
213 RxErrLong = (1 << 21), /* Rx error, packet > 4096 bytes */
214 RxErrFIFO = (1 << 22), /* Rx error, FIFO overflowed, pkt bad */
216 /* StatsAddr register */
217 DumpStats = (1 << 3), /* Begin stats dump */
219 /* RxConfig register */
220 RxCfgFIFOShift = 13, /* Shift, to get Rx FIFO thresh value */
221 RxCfgDMAShift = 8, /* Shift, to get Rx Max DMA value */
222 AcceptErr = 0x20, /* Accept packets with CRC errors */
223 AcceptRunt = 0x10, /* Accept runt (<64 bytes) packets */
224 AcceptBroadcast = 0x08, /* Accept broadcast packets */
225 AcceptMulticast = 0x04, /* Accept multicast packets */
226 AcceptMyPhys = 0x02, /* Accept pkts with our MAC as dest */
227 AcceptAllPhys = 0x01, /* Accept all pkts w/ physical dest */
229 /* IntrMask / IntrStatus registers */
230 PciErr = (1 << 15), /* System error on the PCI bus */
231 TimerIntr = (1 << 14), /* Asserted when TCTR reaches TimerInt value */
232 LenChg = (1 << 13), /* Cable length change */
233 SWInt = (1 << 8), /* Software-requested interrupt */
234 TxEmpty = (1 << 7), /* No Tx descriptors available */
235 RxFIFOOvr = (1 << 6), /* Rx FIFO Overflow */
236 LinkChg = (1 << 5), /* Packet underrun, or link change */
237 RxEmpty = (1 << 4), /* No Rx descriptors available */
238 TxErr = (1 << 3), /* Tx error */
239 TxOK = (1 << 2), /* Tx packet sent */
240 RxErr = (1 << 1), /* Rx error */
241 RxOK = (1 << 0), /* Rx packet received */
242 IntrResvd = (1 << 10), /* reserved, according to RealTek engineers,
243 but hardware likes to raise it */
245 IntrAll = PciErr | TimerIntr | LenChg | SWInt | TxEmpty |
246 RxFIFOOvr | LinkChg | RxEmpty | TxErr | TxOK |
247 RxErr | RxOK | IntrResvd,
249 /* C mode command register */
250 CmdReset = (1 << 4), /* Enable to reset; self-clearing */
251 RxOn = (1 << 3), /* Rx mode enable */
252 TxOn = (1 << 2), /* Tx mode enable */
254 /* C+ mode command register */
255 RxVlanOn = (1 << 6), /* Rx VLAN de-tagging enable */
256 RxChkSum = (1 << 5), /* Rx checksum offload enable */
257 PCIDAC = (1 << 4), /* PCI Dual Address Cycle (64-bit PCI) */
258 PCIMulRW = (1 << 3), /* Enable PCI read/write multiple */
259 CpRxOn = (1 << 1), /* Rx mode enable */
260 CpTxOn = (1 << 0), /* Tx mode enable */
262 /* Cfg9436 EEPROM control register */
263 Cfg9346_Lock = 0x00, /* Lock ConfigX/MII register access */
264 Cfg9346_Unlock = 0xC0, /* Unlock ConfigX/MII register access */
266 /* TxConfig register */
267 IFG = (1 << 25) | (1 << 24), /* standard IEEE interframe gap */
268 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
270 /* Early Tx Threshold register */
271 TxThreshMask = 0x3f, /* Mask bits 5-0 */
272 TxThreshMax = 2048, /* Max early Tx threshold */
274 /* Config1 register */
275 DriverLoaded = (1 << 5), /* Software marker, driver is loaded */
276 LWACT = (1 << 4), /* LWAKE active mode */
277 PMEnable = (1 << 0), /* Enable various PM features of chip */
279 /* Config3 register */
280 PARMEnable = (1 << 6), /* Enable auto-loading of PHY parms */
281 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
282 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
284 /* Config4 register */
285 LWPTN = (1 << 1), /* LWAKE Pattern */
286 LWPME = (1 << 4), /* LANWAKE vs PMEB */
288 /* Config5 register */
289 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
290 MWF = (1 << 5), /* Accept Multicast wakeup frame */
291 UWF = (1 << 4), /* Accept Unicast wakeup frame */
292 LANWake = (1 << 1), /* Enable LANWake signal */
293 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
295 cp_norx_intr_mask = PciErr | LinkChg | TxOK | TxErr | TxEmpty,
296 cp_rx_intr_mask = RxOK | RxErr | RxEmpty | RxFIFOOvr,
297 cp_intr_mask = cp_rx_intr_mask | cp_norx_intr_mask,
300 static const unsigned int cp_rx_config =
301 (RX_FIFO_THRESH << RxCfgFIFOShift) |
302 (RX_DMA_BURST << RxCfgDMAShift);
310 struct cp_dma_stats {
324 } __attribute__((packed));
326 struct cp_extra_stats {
327 unsigned long rx_frags;
332 struct net_device *dev;
336 struct napi_struct napi;
338 struct pci_dev *pdev;
342 struct cp_extra_stats cp_stats;
344 unsigned rx_head ____cacheline_aligned;
346 struct cp_desc *rx_ring;
347 struct sk_buff *rx_skb[CP_RX_RING_SIZE];
349 unsigned tx_head ____cacheline_aligned;
351 struct cp_desc *tx_ring;
352 struct sk_buff *tx_skb[CP_TX_RING_SIZE];
355 unsigned wol_enabled : 1; /* Is Wake-on-LAN enabled? */
358 struct vlan_group *vlgrp;
362 struct mii_if_info mii_if;
365 #define cpr8(reg) readb(cp->regs + (reg))
366 #define cpr16(reg) readw(cp->regs + (reg))
367 #define cpr32(reg) readl(cp->regs + (reg))
368 #define cpw8(reg,val) writeb((val), cp->regs + (reg))
369 #define cpw16(reg,val) writew((val), cp->regs + (reg))
370 #define cpw32(reg,val) writel((val), cp->regs + (reg))
371 #define cpw8_f(reg,val) do { \
372 writeb((val), cp->regs + (reg)); \
373 readb(cp->regs + (reg)); \
375 #define cpw16_f(reg,val) do { \
376 writew((val), cp->regs + (reg)); \
377 readw(cp->regs + (reg)); \
379 #define cpw32_f(reg,val) do { \
380 writel((val), cp->regs + (reg)); \
381 readl(cp->regs + (reg)); \
385 static void __cp_set_rx_mode (struct net_device *dev);
386 static void cp_tx (struct cp_private *cp);
387 static void cp_clean_rings (struct cp_private *cp);
388 #ifdef CONFIG_NET_POLL_CONTROLLER
389 static void cp_poll_controller(struct net_device *dev);
391 static int cp_get_eeprom_len(struct net_device *dev);
392 static int cp_get_eeprom(struct net_device *dev,
393 struct ethtool_eeprom *eeprom, u8 *data);
394 static int cp_set_eeprom(struct net_device *dev,
395 struct ethtool_eeprom *eeprom, u8 *data);
397 static struct pci_device_id cp_pci_tbl[] = {
398 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139), },
399 { PCI_DEVICE(PCI_VENDOR_ID_TTTECH, PCI_DEVICE_ID_TTTECH_MC322), },
402 MODULE_DEVICE_TABLE(pci, cp_pci_tbl);
405 const char str[ETH_GSTRING_LEN];
406 } ethtool_stats_keys[] = {
425 static void cp_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
427 struct cp_private *cp = netdev_priv(dev);
430 spin_lock_irqsave(&cp->lock, flags);
433 cp->cpcmd |= RxVlanOn;
435 cp->cpcmd &= ~RxVlanOn;
437 cpw16(CpCmd, cp->cpcmd);
438 spin_unlock_irqrestore(&cp->lock, flags);
440 #endif /* CP_VLAN_TAG_USED */
442 static inline void cp_set_rxbufsize (struct cp_private *cp)
444 unsigned int mtu = cp->dev->mtu;
446 if (mtu > ETH_DATA_LEN)
447 /* MTU + ethernet header + FCS + optional VLAN tag */
448 cp->rx_buf_sz = mtu + ETH_HLEN + 8;
450 cp->rx_buf_sz = PKT_BUF_SZ;
453 static inline void cp_rx_skb (struct cp_private *cp, struct sk_buff *skb,
454 struct cp_desc *desc)
456 skb->protocol = eth_type_trans (skb, cp->dev);
458 cp->dev->stats.rx_packets++;
459 cp->dev->stats.rx_bytes += skb->len;
462 if (cp->vlgrp && (desc->opts2 & cpu_to_le32(RxVlanTagged))) {
463 vlan_hwaccel_receive_skb(skb, cp->vlgrp,
464 swab16(le32_to_cpu(desc->opts2) & 0xffff));
467 netif_receive_skb(skb);
470 static void cp_rx_err_acct (struct cp_private *cp, unsigned rx_tail,
473 if (netif_msg_rx_err (cp))
474 pr_debug("%s: rx err, slot %d status 0x%x len %d\n",
475 cp->dev->name, rx_tail, status, len);
476 cp->dev->stats.rx_errors++;
477 if (status & RxErrFrame)
478 cp->dev->stats.rx_frame_errors++;
479 if (status & RxErrCRC)
480 cp->dev->stats.rx_crc_errors++;
481 if ((status & RxErrRunt) || (status & RxErrLong))
482 cp->dev->stats.rx_length_errors++;
483 if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag))
484 cp->dev->stats.rx_length_errors++;
485 if (status & RxErrFIFO)
486 cp->dev->stats.rx_fifo_errors++;
489 static inline unsigned int cp_rx_csum_ok (u32 status)
491 unsigned int protocol = (status >> 16) & 0x3;
493 if (likely((protocol == RxProtoTCP) && (!(status & TCPFail))))
495 else if ((protocol == RxProtoUDP) && (!(status & UDPFail)))
497 else if ((protocol == RxProtoIP) && (!(status & IPFail)))
502 static int cp_rx_poll(struct napi_struct *napi, int budget)
504 struct cp_private *cp = container_of(napi, struct cp_private, napi);
505 struct net_device *dev = cp->dev;
506 unsigned int rx_tail = cp->rx_tail;
511 cpw16(IntrStatus, cp_rx_intr_mask);
516 struct sk_buff *skb, *new_skb;
517 struct cp_desc *desc;
520 skb = cp->rx_skb[rx_tail];
523 desc = &cp->rx_ring[rx_tail];
524 status = le32_to_cpu(desc->opts1);
525 if (status & DescOwn)
528 len = (status & 0x1fff) - 4;
529 mapping = le64_to_cpu(desc->addr);
531 if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag)) {
532 /* we don't support incoming fragmented frames.
533 * instead, we attempt to ensure that the
534 * pre-allocated RX skbs are properly sized such
535 * that RX fragments are never encountered
537 cp_rx_err_acct(cp, rx_tail, status, len);
538 dev->stats.rx_dropped++;
539 cp->cp_stats.rx_frags++;
543 if (status & (RxError | RxErrFIFO)) {
544 cp_rx_err_acct(cp, rx_tail, status, len);
548 if (netif_msg_rx_status(cp))
549 pr_debug("%s: rx slot %d status 0x%x len %d\n",
550 dev->name, rx_tail, status, len);
552 buflen = cp->rx_buf_sz + NET_IP_ALIGN;
553 new_skb = netdev_alloc_skb(dev, buflen);
555 dev->stats.rx_dropped++;
559 skb_reserve(new_skb, NET_IP_ALIGN);
561 dma_unmap_single(&cp->pdev->dev, mapping,
562 buflen, PCI_DMA_FROMDEVICE);
564 /* Handle checksum offloading for incoming packets. */
565 if (cp_rx_csum_ok(status))
566 skb->ip_summed = CHECKSUM_UNNECESSARY;
568 skb->ip_summed = CHECKSUM_NONE;
572 mapping = dma_map_single(&cp->pdev->dev, new_skb->data, buflen,
574 cp->rx_skb[rx_tail] = new_skb;
576 cp_rx_skb(cp, skb, desc);
580 cp->rx_ring[rx_tail].opts2 = 0;
581 cp->rx_ring[rx_tail].addr = cpu_to_le64(mapping);
582 if (rx_tail == (CP_RX_RING_SIZE - 1))
583 desc->opts1 = cpu_to_le32(DescOwn | RingEnd |
586 desc->opts1 = cpu_to_le32(DescOwn | cp->rx_buf_sz);
587 rx_tail = NEXT_RX(rx_tail);
593 cp->rx_tail = rx_tail;
595 /* if we did not reach work limit, then we're done with
596 * this round of polling
601 if (cpr16(IntrStatus) & cp_rx_intr_mask)
604 spin_lock_irqsave(&cp->lock, flags);
605 cpw16_f(IntrMask, cp_intr_mask);
606 __napi_complete(napi);
607 spin_unlock_irqrestore(&cp->lock, flags);
613 static irqreturn_t cp_interrupt (int irq, void *dev_instance)
615 struct net_device *dev = dev_instance;
616 struct cp_private *cp;
619 if (unlikely(dev == NULL))
621 cp = netdev_priv(dev);
623 status = cpr16(IntrStatus);
624 if (!status || (status == 0xFFFF))
627 if (netif_msg_intr(cp))
628 pr_debug("%s: intr, status %04x cmd %02x cpcmd %04x\n",
629 dev->name, status, cpr8(Cmd), cpr16(CpCmd));
631 cpw16(IntrStatus, status & ~cp_rx_intr_mask);
633 spin_lock(&cp->lock);
635 /* close possible race's with dev_close */
636 if (unlikely(!netif_running(dev))) {
638 spin_unlock(&cp->lock);
642 if (status & (RxOK | RxErr | RxEmpty | RxFIFOOvr))
643 if (napi_schedule_prep(&cp->napi)) {
644 cpw16_f(IntrMask, cp_norx_intr_mask);
645 __napi_schedule(&cp->napi);
648 if (status & (TxOK | TxErr | TxEmpty | SWInt))
650 if (status & LinkChg)
651 mii_check_media(&cp->mii_if, netif_msg_link(cp), false);
653 spin_unlock(&cp->lock);
655 if (status & PciErr) {
658 pci_read_config_word(cp->pdev, PCI_STATUS, &pci_status);
659 pci_write_config_word(cp->pdev, PCI_STATUS, pci_status);
660 pr_err("%s: PCI bus error, status=%04x, PCI status=%04x\n",
661 dev->name, status, pci_status);
663 /* TODO: reset hardware */
669 #ifdef CONFIG_NET_POLL_CONTROLLER
671 * Polling receive - used by netconsole and other diagnostic tools
672 * to allow network i/o with interrupts disabled.
674 static void cp_poll_controller(struct net_device *dev)
676 disable_irq(dev->irq);
677 cp_interrupt(dev->irq, dev);
678 enable_irq(dev->irq);
682 static void cp_tx (struct cp_private *cp)
684 unsigned tx_head = cp->tx_head;
685 unsigned tx_tail = cp->tx_tail;
687 while (tx_tail != tx_head) {
688 struct cp_desc *txd = cp->tx_ring + tx_tail;
693 status = le32_to_cpu(txd->opts1);
694 if (status & DescOwn)
697 skb = cp->tx_skb[tx_tail];
700 dma_unmap_single(&cp->pdev->dev, le64_to_cpu(txd->addr),
701 le32_to_cpu(txd->opts1) & 0xffff,
704 if (status & LastFrag) {
705 if (status & (TxError | TxFIFOUnder)) {
706 if (netif_msg_tx_err(cp))
707 pr_debug("%s: tx err, status 0x%x\n",
708 cp->dev->name, status);
709 cp->dev->stats.tx_errors++;
711 cp->dev->stats.tx_window_errors++;
712 if (status & TxMaxCol)
713 cp->dev->stats.tx_aborted_errors++;
714 if (status & TxLinkFail)
715 cp->dev->stats.tx_carrier_errors++;
716 if (status & TxFIFOUnder)
717 cp->dev->stats.tx_fifo_errors++;
719 cp->dev->stats.collisions +=
720 ((status >> TxColCntShift) & TxColCntMask);
721 cp->dev->stats.tx_packets++;
722 cp->dev->stats.tx_bytes += skb->len;
723 if (netif_msg_tx_done(cp))
724 pr_debug("%s: tx done, slot %d\n", cp->dev->name, tx_tail);
726 dev_kfree_skb_irq(skb);
729 cp->tx_skb[tx_tail] = NULL;
731 tx_tail = NEXT_TX(tx_tail);
734 cp->tx_tail = tx_tail;
736 if (TX_BUFFS_AVAIL(cp) > (MAX_SKB_FRAGS + 1))
737 netif_wake_queue(cp->dev);
740 static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
742 struct cp_private *cp = netdev_priv(dev);
745 unsigned long intr_flags;
751 spin_lock_irqsave(&cp->lock, intr_flags);
753 /* This is a hard error, log it. */
754 if (TX_BUFFS_AVAIL(cp) <= (skb_shinfo(skb)->nr_frags + 1)) {
755 netif_stop_queue(dev);
756 spin_unlock_irqrestore(&cp->lock, intr_flags);
757 pr_err(PFX "%s: BUG! Tx Ring full when queue awake!\n",
759 return NETDEV_TX_BUSY;
763 if (cp->vlgrp && vlan_tx_tag_present(skb))
764 vlan_tag = TxVlanTag | swab16(vlan_tx_tag_get(skb));
768 eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
769 if (dev->features & NETIF_F_TSO)
770 mss = skb_shinfo(skb)->gso_size;
772 if (skb_shinfo(skb)->nr_frags == 0) {
773 struct cp_desc *txd = &cp->tx_ring[entry];
778 mapping = dma_map_single(&cp->pdev->dev, skb->data, len, PCI_DMA_TODEVICE);
779 CP_VLAN_TX_TAG(txd, vlan_tag);
780 txd->addr = cpu_to_le64(mapping);
783 flags = eor | len | DescOwn | FirstFrag | LastFrag;
786 flags |= LargeSend | ((mss & MSSMask) << MSSShift);
787 else if (skb->ip_summed == CHECKSUM_PARTIAL) {
788 const struct iphdr *ip = ip_hdr(skb);
789 if (ip->protocol == IPPROTO_TCP)
790 flags |= IPCS | TCPCS;
791 else if (ip->protocol == IPPROTO_UDP)
792 flags |= IPCS | UDPCS;
794 WARN_ON(1); /* we need a WARN() */
797 txd->opts1 = cpu_to_le32(flags);
800 cp->tx_skb[entry] = skb;
801 entry = NEXT_TX(entry);
804 u32 first_len, first_eor;
805 dma_addr_t first_mapping;
806 int frag, first_entry = entry;
807 const struct iphdr *ip = ip_hdr(skb);
809 /* We must give this initial chunk to the device last.
810 * Otherwise we could race with the device.
813 first_len = skb_headlen(skb);
814 first_mapping = dma_map_single(&cp->pdev->dev, skb->data,
815 first_len, PCI_DMA_TODEVICE);
816 cp->tx_skb[entry] = skb;
817 entry = NEXT_TX(entry);
819 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
820 skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
825 len = this_frag->size;
826 mapping = dma_map_single(&cp->pdev->dev,
827 ((void *) page_address(this_frag->page) +
828 this_frag->page_offset),
829 len, PCI_DMA_TODEVICE);
830 eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
832 ctrl = eor | len | DescOwn;
836 ((mss & MSSMask) << MSSShift);
837 else if (skb->ip_summed == CHECKSUM_PARTIAL) {
838 if (ip->protocol == IPPROTO_TCP)
839 ctrl |= IPCS | TCPCS;
840 else if (ip->protocol == IPPROTO_UDP)
841 ctrl |= IPCS | UDPCS;
846 if (frag == skb_shinfo(skb)->nr_frags - 1)
849 txd = &cp->tx_ring[entry];
850 CP_VLAN_TX_TAG(txd, vlan_tag);
851 txd->addr = cpu_to_le64(mapping);
854 txd->opts1 = cpu_to_le32(ctrl);
857 cp->tx_skb[entry] = skb;
858 entry = NEXT_TX(entry);
861 txd = &cp->tx_ring[first_entry];
862 CP_VLAN_TX_TAG(txd, vlan_tag);
863 txd->addr = cpu_to_le64(first_mapping);
866 if (skb->ip_summed == CHECKSUM_PARTIAL) {
867 if (ip->protocol == IPPROTO_TCP)
868 txd->opts1 = cpu_to_le32(first_eor | first_len |
869 FirstFrag | DescOwn |
871 else if (ip->protocol == IPPROTO_UDP)
872 txd->opts1 = cpu_to_le32(first_eor | first_len |
873 FirstFrag | DescOwn |
878 txd->opts1 = cpu_to_le32(first_eor | first_len |
879 FirstFrag | DescOwn);
883 if (netif_msg_tx_queued(cp))
884 pr_debug("%s: tx queued, slot %d, skblen %d\n",
885 dev->name, entry, skb->len);
886 if (TX_BUFFS_AVAIL(cp) <= (MAX_SKB_FRAGS + 1))
887 netif_stop_queue(dev);
889 spin_unlock_irqrestore(&cp->lock, intr_flags);
891 cpw8(TxPoll, NormalTxPoll);
892 dev->trans_start = jiffies;
897 /* Set or clear the multicast filter for this adaptor.
898 This routine is not state sensitive and need not be SMP locked. */
900 static void __cp_set_rx_mode (struct net_device *dev)
902 struct cp_private *cp = netdev_priv(dev);
903 u32 mc_filter[2]; /* Multicast hash filter */
907 /* Note: do not reorder, GCC is clever about common statements. */
908 if (dev->flags & IFF_PROMISC) {
909 /* Unconditionally log net taps. */
911 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
913 mc_filter[1] = mc_filter[0] = 0xffffffff;
914 } else if ((dev->mc_count > multicast_filter_limit)
915 || (dev->flags & IFF_ALLMULTI)) {
916 /* Too many to filter perfectly -- accept all multicasts. */
917 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
918 mc_filter[1] = mc_filter[0] = 0xffffffff;
920 struct dev_mc_list *mclist;
921 rx_mode = AcceptBroadcast | AcceptMyPhys;
922 mc_filter[1] = mc_filter[0] = 0;
923 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
924 i++, mclist = mclist->next) {
925 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
927 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
928 rx_mode |= AcceptMulticast;
932 /* We can safely update without stopping the chip. */
933 tmp = cp_rx_config | rx_mode;
934 if (cp->rx_config != tmp) {
935 cpw32_f (RxConfig, tmp);
938 cpw32_f (MAR0 + 0, mc_filter[0]);
939 cpw32_f (MAR0 + 4, mc_filter[1]);
942 static void cp_set_rx_mode (struct net_device *dev)
945 struct cp_private *cp = netdev_priv(dev);
947 spin_lock_irqsave (&cp->lock, flags);
948 __cp_set_rx_mode(dev);
949 spin_unlock_irqrestore (&cp->lock, flags);
952 static void __cp_get_stats(struct cp_private *cp)
954 /* only lower 24 bits valid; write any value to clear */
955 cp->dev->stats.rx_missed_errors += (cpr32 (RxMissed) & 0xffffff);
959 static struct net_device_stats *cp_get_stats(struct net_device *dev)
961 struct cp_private *cp = netdev_priv(dev);
964 /* The chip only need report frame silently dropped. */
965 spin_lock_irqsave(&cp->lock, flags);
966 if (netif_running(dev) && netif_device_present(dev))
968 spin_unlock_irqrestore(&cp->lock, flags);
973 static void cp_stop_hw (struct cp_private *cp)
975 cpw16(IntrStatus, ~(cpr16(IntrStatus)));
976 cpw16_f(IntrMask, 0);
979 cpw16_f(IntrStatus, ~(cpr16(IntrStatus)));
982 cp->tx_head = cp->tx_tail = 0;
985 static void cp_reset_hw (struct cp_private *cp)
987 unsigned work = 1000;
992 if (!(cpr8(Cmd) & CmdReset))
995 schedule_timeout_uninterruptible(10);
998 pr_err("%s: hardware reset timeout\n", cp->dev->name);
1001 static inline void cp_start_hw (struct cp_private *cp)
1003 cpw16(CpCmd, cp->cpcmd);
1004 cpw8(Cmd, RxOn | TxOn);
1007 static void cp_init_hw (struct cp_private *cp)
1009 struct net_device *dev = cp->dev;
1010 dma_addr_t ring_dma;
1014 cpw8_f (Cfg9346, Cfg9346_Unlock);
1016 /* Restore our idea of the MAC address. */
1017 cpw32_f (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
1018 cpw32_f (MAC0 + 4, le32_to_cpu (*(__le32 *) (dev->dev_addr + 4)));
1021 cpw8(TxThresh, 0x06); /* XXX convert magic num to a constant */
1023 __cp_set_rx_mode(dev);
1024 cpw32_f (TxConfig, IFG | (TX_DMA_BURST << TxDMAShift));
1026 cpw8(Config1, cpr8(Config1) | DriverLoaded | PMEnable);
1027 /* Disable Wake-on-LAN. Can be turned on with ETHTOOL_SWOL */
1028 cpw8(Config3, PARMEnable);
1029 cp->wol_enabled = 0;
1031 cpw8(Config5, cpr8(Config5) & PMEStatus);
1033 cpw32_f(HiTxRingAddr, 0);
1034 cpw32_f(HiTxRingAddr + 4, 0);
1036 ring_dma = cp->ring_dma;
1037 cpw32_f(RxRingAddr, ring_dma & 0xffffffff);
1038 cpw32_f(RxRingAddr + 4, (ring_dma >> 16) >> 16);
1040 ring_dma += sizeof(struct cp_desc) * CP_RX_RING_SIZE;
1041 cpw32_f(TxRingAddr, ring_dma & 0xffffffff);
1042 cpw32_f(TxRingAddr + 4, (ring_dma >> 16) >> 16);
1044 cpw16(MultiIntr, 0);
1046 cpw16_f(IntrMask, cp_intr_mask);
1048 cpw8_f(Cfg9346, Cfg9346_Lock);
1051 static int cp_refill_rx(struct cp_private *cp)
1053 struct net_device *dev = cp->dev;
1056 for (i = 0; i < CP_RX_RING_SIZE; i++) {
1057 struct sk_buff *skb;
1060 skb = netdev_alloc_skb(dev, cp->rx_buf_sz + NET_IP_ALIGN);
1064 skb_reserve(skb, NET_IP_ALIGN);
1066 mapping = dma_map_single(&cp->pdev->dev, skb->data,
1067 cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
1068 cp->rx_skb[i] = skb;
1070 cp->rx_ring[i].opts2 = 0;
1071 cp->rx_ring[i].addr = cpu_to_le64(mapping);
1072 if (i == (CP_RX_RING_SIZE - 1))
1073 cp->rx_ring[i].opts1 =
1074 cpu_to_le32(DescOwn | RingEnd | cp->rx_buf_sz);
1076 cp->rx_ring[i].opts1 =
1077 cpu_to_le32(DescOwn | cp->rx_buf_sz);
1087 static void cp_init_rings_index (struct cp_private *cp)
1090 cp->tx_head = cp->tx_tail = 0;
1093 static int cp_init_rings (struct cp_private *cp)
1095 memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
1096 cp->tx_ring[CP_TX_RING_SIZE - 1].opts1 = cpu_to_le32(RingEnd);
1098 cp_init_rings_index(cp);
1100 return cp_refill_rx (cp);
1103 static int cp_alloc_rings (struct cp_private *cp)
1107 mem = dma_alloc_coherent(&cp->pdev->dev, CP_RING_BYTES,
1108 &cp->ring_dma, GFP_KERNEL);
1113 cp->tx_ring = &cp->rx_ring[CP_RX_RING_SIZE];
1115 return cp_init_rings(cp);
1118 static void cp_clean_rings (struct cp_private *cp)
1120 struct cp_desc *desc;
1123 for (i = 0; i < CP_RX_RING_SIZE; i++) {
1124 if (cp->rx_skb[i]) {
1125 desc = cp->rx_ring + i;
1126 dma_unmap_single(&cp->pdev->dev,le64_to_cpu(desc->addr),
1127 cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
1128 dev_kfree_skb(cp->rx_skb[i]);
1132 for (i = 0; i < CP_TX_RING_SIZE; i++) {
1133 if (cp->tx_skb[i]) {
1134 struct sk_buff *skb = cp->tx_skb[i];
1136 desc = cp->tx_ring + i;
1137 dma_unmap_single(&cp->pdev->dev,le64_to_cpu(desc->addr),
1138 le32_to_cpu(desc->opts1) & 0xffff,
1140 if (le32_to_cpu(desc->opts1) & LastFrag)
1142 cp->dev->stats.tx_dropped++;
1146 memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
1147 memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
1149 memset(cp->rx_skb, 0, sizeof(struct sk_buff *) * CP_RX_RING_SIZE);
1150 memset(cp->tx_skb, 0, sizeof(struct sk_buff *) * CP_TX_RING_SIZE);
1153 static void cp_free_rings (struct cp_private *cp)
1156 dma_free_coherent(&cp->pdev->dev, CP_RING_BYTES, cp->rx_ring,
1162 static int cp_open (struct net_device *dev)
1164 struct cp_private *cp = netdev_priv(dev);
1167 if (netif_msg_ifup(cp))
1168 pr_debug("%s: enabling interface\n", dev->name);
1170 rc = cp_alloc_rings(cp);
1174 napi_enable(&cp->napi);
1178 rc = request_irq(dev->irq, cp_interrupt, IRQF_SHARED, dev->name, dev);
1182 netif_carrier_off(dev);
1183 mii_check_media(&cp->mii_if, netif_msg_link(cp), true);
1184 netif_start_queue(dev);
1189 napi_disable(&cp->napi);
1195 static int cp_close (struct net_device *dev)
1197 struct cp_private *cp = netdev_priv(dev);
1198 unsigned long flags;
1200 napi_disable(&cp->napi);
1202 if (netif_msg_ifdown(cp))
1203 pr_debug("%s: disabling interface\n", dev->name);
1205 spin_lock_irqsave(&cp->lock, flags);
1207 netif_stop_queue(dev);
1208 netif_carrier_off(dev);
1212 spin_unlock_irqrestore(&cp->lock, flags);
1214 free_irq(dev->irq, dev);
1220 static void cp_tx_timeout(struct net_device *dev)
1222 struct cp_private *cp = netdev_priv(dev);
1223 unsigned long flags;
1226 pr_warning("%s: Transmit timeout, status %2x %4x %4x %4x\n",
1227 dev->name, cpr8(Cmd), cpr16(CpCmd),
1228 cpr16(IntrStatus), cpr16(IntrMask));
1230 spin_lock_irqsave(&cp->lock, flags);
1234 rc = cp_init_rings(cp);
1237 netif_wake_queue(dev);
1239 spin_unlock_irqrestore(&cp->lock, flags);
1245 static int cp_change_mtu(struct net_device *dev, int new_mtu)
1247 struct cp_private *cp = netdev_priv(dev);
1249 unsigned long flags;
1251 /* check for invalid MTU, according to hardware limits */
1252 if (new_mtu < CP_MIN_MTU || new_mtu > CP_MAX_MTU)
1255 /* if network interface not up, no need for complexity */
1256 if (!netif_running(dev)) {
1258 cp_set_rxbufsize(cp); /* set new rx buf size */
1262 spin_lock_irqsave(&cp->lock, flags);
1264 cp_stop_hw(cp); /* stop h/w and free rings */
1268 cp_set_rxbufsize(cp); /* set new rx buf size */
1270 rc = cp_init_rings(cp); /* realloc and restart h/w */
1273 spin_unlock_irqrestore(&cp->lock, flags);
1279 static const char mii_2_8139_map[8] = {
1290 static int mdio_read(struct net_device *dev, int phy_id, int location)
1292 struct cp_private *cp = netdev_priv(dev);
1294 return location < 8 && mii_2_8139_map[location] ?
1295 readw(cp->regs + mii_2_8139_map[location]) : 0;
1299 static void mdio_write(struct net_device *dev, int phy_id, int location,
1302 struct cp_private *cp = netdev_priv(dev);
1304 if (location == 0) {
1305 cpw8(Cfg9346, Cfg9346_Unlock);
1306 cpw16(BasicModeCtrl, value);
1307 cpw8(Cfg9346, Cfg9346_Lock);
1308 } else if (location < 8 && mii_2_8139_map[location])
1309 cpw16(mii_2_8139_map[location], value);
1312 /* Set the ethtool Wake-on-LAN settings */
1313 static int netdev_set_wol (struct cp_private *cp,
1314 const struct ethtool_wolinfo *wol)
1318 options = cpr8 (Config3) & ~(LinkUp | MagicPacket);
1319 /* If WOL is being disabled, no need for complexity */
1321 if (wol->wolopts & WAKE_PHY) options |= LinkUp;
1322 if (wol->wolopts & WAKE_MAGIC) options |= MagicPacket;
1325 cpw8 (Cfg9346, Cfg9346_Unlock);
1326 cpw8 (Config3, options);
1327 cpw8 (Cfg9346, Cfg9346_Lock);
1329 options = 0; /* Paranoia setting */
1330 options = cpr8 (Config5) & ~(UWF | MWF | BWF);
1331 /* If WOL is being disabled, no need for complexity */
1333 if (wol->wolopts & WAKE_UCAST) options |= UWF;
1334 if (wol->wolopts & WAKE_BCAST) options |= BWF;
1335 if (wol->wolopts & WAKE_MCAST) options |= MWF;
1338 cpw8 (Config5, options);
1340 cp->wol_enabled = (wol->wolopts) ? 1 : 0;
1345 /* Get the ethtool Wake-on-LAN settings */
1346 static void netdev_get_wol (struct cp_private *cp,
1347 struct ethtool_wolinfo *wol)
1351 wol->wolopts = 0; /* Start from scratch */
1352 wol->supported = WAKE_PHY | WAKE_BCAST | WAKE_MAGIC |
1353 WAKE_MCAST | WAKE_UCAST;
1354 /* We don't need to go on if WOL is disabled */
1355 if (!cp->wol_enabled) return;
1357 options = cpr8 (Config3);
1358 if (options & LinkUp) wol->wolopts |= WAKE_PHY;
1359 if (options & MagicPacket) wol->wolopts |= WAKE_MAGIC;
1361 options = 0; /* Paranoia setting */
1362 options = cpr8 (Config5);
1363 if (options & UWF) wol->wolopts |= WAKE_UCAST;
1364 if (options & BWF) wol->wolopts |= WAKE_BCAST;
1365 if (options & MWF) wol->wolopts |= WAKE_MCAST;
1368 static void cp_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1370 struct cp_private *cp = netdev_priv(dev);
1372 strcpy (info->driver, DRV_NAME);
1373 strcpy (info->version, DRV_VERSION);
1374 strcpy (info->bus_info, pci_name(cp->pdev));
1377 static int cp_get_regs_len(struct net_device *dev)
1379 return CP_REGS_SIZE;
1382 static int cp_get_sset_count (struct net_device *dev, int sset)
1386 return CP_NUM_STATS;
1392 static int cp_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1394 struct cp_private *cp = netdev_priv(dev);
1396 unsigned long flags;
1398 spin_lock_irqsave(&cp->lock, flags);
1399 rc = mii_ethtool_gset(&cp->mii_if, cmd);
1400 spin_unlock_irqrestore(&cp->lock, flags);
1405 static int cp_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1407 struct cp_private *cp = netdev_priv(dev);
1409 unsigned long flags;
1411 spin_lock_irqsave(&cp->lock, flags);
1412 rc = mii_ethtool_sset(&cp->mii_if, cmd);
1413 spin_unlock_irqrestore(&cp->lock, flags);
1418 static int cp_nway_reset(struct net_device *dev)
1420 struct cp_private *cp = netdev_priv(dev);
1421 return mii_nway_restart(&cp->mii_if);
1424 static u32 cp_get_msglevel(struct net_device *dev)
1426 struct cp_private *cp = netdev_priv(dev);
1427 return cp->msg_enable;
1430 static void cp_set_msglevel(struct net_device *dev, u32 value)
1432 struct cp_private *cp = netdev_priv(dev);
1433 cp->msg_enable = value;
1436 static u32 cp_get_rx_csum(struct net_device *dev)
1438 struct cp_private *cp = netdev_priv(dev);
1439 return (cpr16(CpCmd) & RxChkSum) ? 1 : 0;
1442 static int cp_set_rx_csum(struct net_device *dev, u32 data)
1444 struct cp_private *cp = netdev_priv(dev);
1445 u16 cmd = cp->cpcmd, newcmd;
1452 newcmd &= ~RxChkSum;
1454 if (newcmd != cmd) {
1455 unsigned long flags;
1457 spin_lock_irqsave(&cp->lock, flags);
1459 cpw16_f(CpCmd, newcmd);
1460 spin_unlock_irqrestore(&cp->lock, flags);
1466 static void cp_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1469 struct cp_private *cp = netdev_priv(dev);
1470 unsigned long flags;
1472 if (regs->len < CP_REGS_SIZE)
1473 return /* -EINVAL */;
1475 regs->version = CP_REGS_VER;
1477 spin_lock_irqsave(&cp->lock, flags);
1478 memcpy_fromio(p, cp->regs, CP_REGS_SIZE);
1479 spin_unlock_irqrestore(&cp->lock, flags);
1482 static void cp_get_wol (struct net_device *dev, struct ethtool_wolinfo *wol)
1484 struct cp_private *cp = netdev_priv(dev);
1485 unsigned long flags;
1487 spin_lock_irqsave (&cp->lock, flags);
1488 netdev_get_wol (cp, wol);
1489 spin_unlock_irqrestore (&cp->lock, flags);
1492 static int cp_set_wol (struct net_device *dev, struct ethtool_wolinfo *wol)
1494 struct cp_private *cp = netdev_priv(dev);
1495 unsigned long flags;
1498 spin_lock_irqsave (&cp->lock, flags);
1499 rc = netdev_set_wol (cp, wol);
1500 spin_unlock_irqrestore (&cp->lock, flags);
1505 static void cp_get_strings (struct net_device *dev, u32 stringset, u8 *buf)
1507 switch (stringset) {
1509 memcpy(buf, ðtool_stats_keys, sizeof(ethtool_stats_keys));
1517 static void cp_get_ethtool_stats (struct net_device *dev,
1518 struct ethtool_stats *estats, u64 *tmp_stats)
1520 struct cp_private *cp = netdev_priv(dev);
1521 struct cp_dma_stats *nic_stats;
1525 nic_stats = dma_alloc_coherent(&cp->pdev->dev, sizeof(*nic_stats),
1530 /* begin NIC statistics dump */
1531 cpw32(StatsAddr + 4, (u64)dma >> 32);
1532 cpw32(StatsAddr, ((u64)dma & DMA_BIT_MASK(32)) | DumpStats);
1535 for (i = 0; i < 1000; i++) {
1536 if ((cpr32(StatsAddr) & DumpStats) == 0)
1540 cpw32(StatsAddr, 0);
1541 cpw32(StatsAddr + 4, 0);
1545 tmp_stats[i++] = le64_to_cpu(nic_stats->tx_ok);
1546 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok);
1547 tmp_stats[i++] = le64_to_cpu(nic_stats->tx_err);
1548 tmp_stats[i++] = le32_to_cpu(nic_stats->rx_err);
1549 tmp_stats[i++] = le16_to_cpu(nic_stats->rx_fifo);
1550 tmp_stats[i++] = le16_to_cpu(nic_stats->frame_align);
1551 tmp_stats[i++] = le32_to_cpu(nic_stats->tx_ok_1col);
1552 tmp_stats[i++] = le32_to_cpu(nic_stats->tx_ok_mcol);
1553 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok_phys);
1554 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok_bcast);
1555 tmp_stats[i++] = le32_to_cpu(nic_stats->rx_ok_mcast);
1556 tmp_stats[i++] = le16_to_cpu(nic_stats->tx_abort);
1557 tmp_stats[i++] = le16_to_cpu(nic_stats->tx_underrun);
1558 tmp_stats[i++] = cp->cp_stats.rx_frags;
1559 BUG_ON(i != CP_NUM_STATS);
1561 dma_free_coherent(&cp->pdev->dev, sizeof(*nic_stats), nic_stats, dma);
1564 static const struct ethtool_ops cp_ethtool_ops = {
1565 .get_drvinfo = cp_get_drvinfo,
1566 .get_regs_len = cp_get_regs_len,
1567 .get_sset_count = cp_get_sset_count,
1568 .get_settings = cp_get_settings,
1569 .set_settings = cp_set_settings,
1570 .nway_reset = cp_nway_reset,
1571 .get_link = ethtool_op_get_link,
1572 .get_msglevel = cp_get_msglevel,
1573 .set_msglevel = cp_set_msglevel,
1574 .get_rx_csum = cp_get_rx_csum,
1575 .set_rx_csum = cp_set_rx_csum,
1576 .set_tx_csum = ethtool_op_set_tx_csum, /* local! */
1577 .set_sg = ethtool_op_set_sg,
1578 .set_tso = ethtool_op_set_tso,
1579 .get_regs = cp_get_regs,
1580 .get_wol = cp_get_wol,
1581 .set_wol = cp_set_wol,
1582 .get_strings = cp_get_strings,
1583 .get_ethtool_stats = cp_get_ethtool_stats,
1584 .get_eeprom_len = cp_get_eeprom_len,
1585 .get_eeprom = cp_get_eeprom,
1586 .set_eeprom = cp_set_eeprom,
1589 static int cp_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1591 struct cp_private *cp = netdev_priv(dev);
1593 unsigned long flags;
1595 if (!netif_running(dev))
1598 spin_lock_irqsave(&cp->lock, flags);
1599 rc = generic_mii_ioctl(&cp->mii_if, if_mii(rq), cmd, NULL);
1600 spin_unlock_irqrestore(&cp->lock, flags);
1604 static int cp_set_mac_address(struct net_device *dev, void *p)
1606 struct cp_private *cp = netdev_priv(dev);
1607 struct sockaddr *addr = p;
1609 if (!is_valid_ether_addr(addr->sa_data))
1610 return -EADDRNOTAVAIL;
1612 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1614 spin_lock_irq(&cp->lock);
1616 cpw8_f(Cfg9346, Cfg9346_Unlock);
1617 cpw32_f(MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
1618 cpw32_f(MAC0 + 4, le32_to_cpu (*(__le32 *) (dev->dev_addr + 4)));
1619 cpw8_f(Cfg9346, Cfg9346_Lock);
1621 spin_unlock_irq(&cp->lock);
1626 /* Serial EEPROM section. */
1628 /* EEPROM_Ctrl bits. */
1629 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1630 #define EE_CS 0x08 /* EEPROM chip select. */
1631 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1632 #define EE_WRITE_0 0x00
1633 #define EE_WRITE_1 0x02
1634 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1635 #define EE_ENB (0x80 | EE_CS)
1637 /* Delay between EEPROM clock transitions.
1638 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1641 #define eeprom_delay() readl(ee_addr)
1643 /* The EEPROM commands include the alway-set leading bit. */
1644 #define EE_EXTEND_CMD (4)
1645 #define EE_WRITE_CMD (5)
1646 #define EE_READ_CMD (6)
1647 #define EE_ERASE_CMD (7)
1649 #define EE_EWDS_ADDR (0)
1650 #define EE_WRAL_ADDR (1)
1651 #define EE_ERAL_ADDR (2)
1652 #define EE_EWEN_ADDR (3)
1654 #define CP_EEPROM_MAGIC PCI_DEVICE_ID_REALTEK_8139
1656 static void eeprom_cmd_start(void __iomem *ee_addr)
1658 writeb (EE_ENB & ~EE_CS, ee_addr);
1659 writeb (EE_ENB, ee_addr);
1663 static void eeprom_cmd(void __iomem *ee_addr, int cmd, int cmd_len)
1667 /* Shift the command bits out. */
1668 for (i = cmd_len - 1; i >= 0; i--) {
1669 int dataval = (cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1670 writeb (EE_ENB | dataval, ee_addr);
1672 writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
1675 writeb (EE_ENB, ee_addr);
1679 static void eeprom_cmd_end(void __iomem *ee_addr)
1681 writeb (~EE_CS, ee_addr);
1685 static void eeprom_extend_cmd(void __iomem *ee_addr, int extend_cmd,
1688 int cmd = (EE_EXTEND_CMD << addr_len) | (extend_cmd << (addr_len - 2));
1690 eeprom_cmd_start(ee_addr);
1691 eeprom_cmd(ee_addr, cmd, 3 + addr_len);
1692 eeprom_cmd_end(ee_addr);
1695 static u16 read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1699 void __iomem *ee_addr = ioaddr + Cfg9346;
1700 int read_cmd = location | (EE_READ_CMD << addr_len);
1702 eeprom_cmd_start(ee_addr);
1703 eeprom_cmd(ee_addr, read_cmd, 3 + addr_len);
1705 for (i = 16; i > 0; i--) {
1706 writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
1709 (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 :
1711 writeb (EE_ENB, ee_addr);
1715 eeprom_cmd_end(ee_addr);
1720 static void write_eeprom(void __iomem *ioaddr, int location, u16 val,
1724 void __iomem *ee_addr = ioaddr + Cfg9346;
1725 int write_cmd = location | (EE_WRITE_CMD << addr_len);
1727 eeprom_extend_cmd(ee_addr, EE_EWEN_ADDR, addr_len);
1729 eeprom_cmd_start(ee_addr);
1730 eeprom_cmd(ee_addr, write_cmd, 3 + addr_len);
1731 eeprom_cmd(ee_addr, val, 16);
1732 eeprom_cmd_end(ee_addr);
1734 eeprom_cmd_start(ee_addr);
1735 for (i = 0; i < 20000; i++)
1736 if (readb(ee_addr) & EE_DATA_READ)
1738 eeprom_cmd_end(ee_addr);
1740 eeprom_extend_cmd(ee_addr, EE_EWDS_ADDR, addr_len);
1743 static int cp_get_eeprom_len(struct net_device *dev)
1745 struct cp_private *cp = netdev_priv(dev);
1748 spin_lock_irq(&cp->lock);
1749 size = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 256 : 128;
1750 spin_unlock_irq(&cp->lock);
1755 static int cp_get_eeprom(struct net_device *dev,
1756 struct ethtool_eeprom *eeprom, u8 *data)
1758 struct cp_private *cp = netdev_priv(dev);
1759 unsigned int addr_len;
1761 u32 offset = eeprom->offset >> 1;
1762 u32 len = eeprom->len;
1765 eeprom->magic = CP_EEPROM_MAGIC;
1767 spin_lock_irq(&cp->lock);
1769 addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6;
1771 if (eeprom->offset & 1) {
1772 val = read_eeprom(cp->regs, offset, addr_len);
1773 data[i++] = (u8)(val >> 8);
1777 while (i < len - 1) {
1778 val = read_eeprom(cp->regs, offset, addr_len);
1779 data[i++] = (u8)val;
1780 data[i++] = (u8)(val >> 8);
1785 val = read_eeprom(cp->regs, offset, addr_len);
1789 spin_unlock_irq(&cp->lock);
1793 static int cp_set_eeprom(struct net_device *dev,
1794 struct ethtool_eeprom *eeprom, u8 *data)
1796 struct cp_private *cp = netdev_priv(dev);
1797 unsigned int addr_len;
1799 u32 offset = eeprom->offset >> 1;
1800 u32 len = eeprom->len;
1803 if (eeprom->magic != CP_EEPROM_MAGIC)
1806 spin_lock_irq(&cp->lock);
1808 addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6;
1810 if (eeprom->offset & 1) {
1811 val = read_eeprom(cp->regs, offset, addr_len) & 0xff;
1812 val |= (u16)data[i++] << 8;
1813 write_eeprom(cp->regs, offset, val, addr_len);
1817 while (i < len - 1) {
1818 val = (u16)data[i++];
1819 val |= (u16)data[i++] << 8;
1820 write_eeprom(cp->regs, offset, val, addr_len);
1825 val = read_eeprom(cp->regs, offset, addr_len) & 0xff00;
1826 val |= (u16)data[i];
1827 write_eeprom(cp->regs, offset, val, addr_len);
1830 spin_unlock_irq(&cp->lock);
1834 /* Put the board into D3cold state and wait for WakeUp signal */
1835 static void cp_set_d3_state (struct cp_private *cp)
1837 pci_enable_wake (cp->pdev, 0, 1); /* Enable PME# generation */
1838 pci_set_power_state (cp->pdev, PCI_D3hot);
1841 static const struct net_device_ops cp_netdev_ops = {
1842 .ndo_open = cp_open,
1843 .ndo_stop = cp_close,
1844 .ndo_validate_addr = eth_validate_addr,
1845 .ndo_set_mac_address = cp_set_mac_address,
1846 .ndo_set_multicast_list = cp_set_rx_mode,
1847 .ndo_get_stats = cp_get_stats,
1848 .ndo_do_ioctl = cp_ioctl,
1849 .ndo_start_xmit = cp_start_xmit,
1850 .ndo_tx_timeout = cp_tx_timeout,
1851 #if CP_VLAN_TAG_USED
1852 .ndo_vlan_rx_register = cp_vlan_rx_register,
1855 .ndo_change_mtu = cp_change_mtu,
1858 #ifdef CONFIG_NET_POLL_CONTROLLER
1859 .ndo_poll_controller = cp_poll_controller,
1863 static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1865 struct net_device *dev;
1866 struct cp_private *cp;
1869 resource_size_t pciaddr;
1870 unsigned int addr_len, i, pci_using_dac;
1873 static int version_printed;
1874 if (version_printed++ == 0)
1875 pr_info("%s", version);
1878 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
1879 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision < 0x20) {
1880 dev_info(&pdev->dev,
1881 "This (id %04x:%04x rev %02x) is not an 8139C+ compatible chip, use 8139too\n",
1882 pdev->vendor, pdev->device, pdev->revision);
1886 dev = alloc_etherdev(sizeof(struct cp_private));
1889 SET_NETDEV_DEV(dev, &pdev->dev);
1891 cp = netdev_priv(dev);
1894 cp->msg_enable = (debug < 0 ? CP_DEF_MSG_ENABLE : debug);
1895 spin_lock_init (&cp->lock);
1896 cp->mii_if.dev = dev;
1897 cp->mii_if.mdio_read = mdio_read;
1898 cp->mii_if.mdio_write = mdio_write;
1899 cp->mii_if.phy_id = CP_INTERNAL_PHY;
1900 cp->mii_if.phy_id_mask = 0x1f;
1901 cp->mii_if.reg_num_mask = 0x1f;
1902 cp_set_rxbufsize(cp);
1904 rc = pci_enable_device(pdev);
1908 rc = pci_set_mwi(pdev);
1910 goto err_out_disable;
1912 rc = pci_request_regions(pdev, DRV_NAME);
1916 pciaddr = pci_resource_start(pdev, 1);
1919 dev_err(&pdev->dev, "no MMIO resource\n");
1922 if (pci_resource_len(pdev, 1) < CP_REGS_SIZE) {
1924 dev_err(&pdev->dev, "MMIO resource (%llx) too small\n",
1925 (unsigned long long)pci_resource_len(pdev, 1));
1929 /* Configure DMA attributes. */
1930 if ((sizeof(dma_addr_t) > 4) &&
1931 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1932 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
1937 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1940 "No usable DMA configuration, aborting.\n");
1943 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1946 "No usable consistent DMA configuration, "
1952 cp->cpcmd = (pci_using_dac ? PCIDAC : 0) |
1953 PCIMulRW | RxChkSum | CpRxOn | CpTxOn;
1955 regs = ioremap(pciaddr, CP_REGS_SIZE);
1958 dev_err(&pdev->dev, "Cannot map PCI MMIO (%Lx@%Lx)\n",
1959 (unsigned long long)pci_resource_len(pdev, 1),
1960 (unsigned long long)pciaddr);
1963 dev->base_addr = (unsigned long) regs;
1968 /* read MAC address from EEPROM */
1969 addr_len = read_eeprom (regs, 0, 8) == 0x8129 ? 8 : 6;
1970 for (i = 0; i < 3; i++)
1971 ((__le16 *) (dev->dev_addr))[i] =
1972 cpu_to_le16(read_eeprom (regs, i + 7, addr_len));
1973 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1975 dev->netdev_ops = &cp_netdev_ops;
1976 netif_napi_add(dev, &cp->napi, cp_rx_poll, 16);
1977 dev->ethtool_ops = &cp_ethtool_ops;
1978 dev->watchdog_timeo = TX_TIMEOUT;
1980 #if CP_VLAN_TAG_USED
1981 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1985 dev->features |= NETIF_F_HIGHDMA;
1987 #if 0 /* disabled by default until verified */
1988 dev->features |= NETIF_F_TSO;
1991 dev->irq = pdev->irq;
1993 rc = register_netdev(dev);
1997 pr_info("%s: RTL-8139C+ at 0x%lx, %pM, IRQ %d\n",
2003 pci_set_drvdata(pdev, dev);
2005 /* enable busmastering and memory-write-invalidate */
2006 pci_set_master(pdev);
2008 if (cp->wol_enabled)
2009 cp_set_d3_state (cp);
2016 pci_release_regions(pdev);
2018 pci_clear_mwi(pdev);
2020 pci_disable_device(pdev);
2026 static void cp_remove_one (struct pci_dev *pdev)
2028 struct net_device *dev = pci_get_drvdata(pdev);
2029 struct cp_private *cp = netdev_priv(dev);
2031 unregister_netdev(dev);
2033 if (cp->wol_enabled)
2034 pci_set_power_state (pdev, PCI_D0);
2035 pci_release_regions(pdev);
2036 pci_clear_mwi(pdev);
2037 pci_disable_device(pdev);
2038 pci_set_drvdata(pdev, NULL);
2043 static int cp_suspend (struct pci_dev *pdev, pm_message_t state)
2045 struct net_device *dev = pci_get_drvdata(pdev);
2046 struct cp_private *cp = netdev_priv(dev);
2047 unsigned long flags;
2049 if (!netif_running(dev))
2052 netif_device_detach (dev);
2053 netif_stop_queue (dev);
2055 spin_lock_irqsave (&cp->lock, flags);
2057 /* Disable Rx and Tx */
2058 cpw16 (IntrMask, 0);
2059 cpw8 (Cmd, cpr8 (Cmd) & (~RxOn | ~TxOn));
2061 spin_unlock_irqrestore (&cp->lock, flags);
2063 pci_save_state(pdev);
2064 pci_enable_wake(pdev, pci_choose_state(pdev, state), cp->wol_enabled);
2065 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2070 static int cp_resume (struct pci_dev *pdev)
2072 struct net_device *dev = pci_get_drvdata (pdev);
2073 struct cp_private *cp = netdev_priv(dev);
2074 unsigned long flags;
2076 if (!netif_running(dev))
2079 netif_device_attach (dev);
2081 pci_set_power_state(pdev, PCI_D0);
2082 pci_restore_state(pdev);
2083 pci_enable_wake(pdev, PCI_D0, 0);
2085 /* FIXME: sh*t may happen if the Rx ring buffer is depleted */
2086 cp_init_rings_index (cp);
2088 netif_start_queue (dev);
2090 spin_lock_irqsave (&cp->lock, flags);
2092 mii_check_media(&cp->mii_if, netif_msg_link(cp), false);
2094 spin_unlock_irqrestore (&cp->lock, flags);
2098 #endif /* CONFIG_PM */
2100 static struct pci_driver cp_driver = {
2102 .id_table = cp_pci_tbl,
2103 .probe = cp_init_one,
2104 .remove = cp_remove_one,
2106 .resume = cp_resume,
2107 .suspend = cp_suspend,
2111 static int __init cp_init (void)
2114 pr_info("%s", version);
2116 return pci_register_driver(&cp_driver);
2119 static void __exit cp_exit (void)
2121 pci_unregister_driver (&cp_driver);
2124 module_init(cp_init);
2125 module_exit(cp_exit);