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 ": "
110 #define CP_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
113 #define CP_NUM_STATS 14 /* struct cp_dma_stats, plus one */
114 #define CP_STATS_SIZE 64 /* size in bytes of DMA stats block */
115 #define CP_REGS_SIZE (0xff + 1)
116 #define CP_REGS_VER 1 /* version 1 */
117 #define CP_RX_RING_SIZE 64
118 #define CP_TX_RING_SIZE 64
119 #define CP_RING_BYTES \
120 ((sizeof(struct cp_desc) * CP_RX_RING_SIZE) + \
121 (sizeof(struct cp_desc) * CP_TX_RING_SIZE) + \
123 #define NEXT_TX(N) (((N) + 1) & (CP_TX_RING_SIZE - 1))
124 #define NEXT_RX(N) (((N) + 1) & (CP_RX_RING_SIZE - 1))
125 #define TX_BUFFS_AVAIL(CP) \
126 (((CP)->tx_tail <= (CP)->tx_head) ? \
127 (CP)->tx_tail + (CP_TX_RING_SIZE - 1) - (CP)->tx_head : \
128 (CP)->tx_tail - (CP)->tx_head - 1)
130 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
132 #define CP_INTERNAL_PHY 32
134 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
135 #define RX_FIFO_THRESH 5 /* Rx buffer level before first PCI xfer. */
136 #define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 */
137 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
138 #define TX_EARLY_THRESH 256 /* Early Tx threshold, in bytes */
140 /* Time in jiffies before concluding the transmitter is hung. */
141 #define TX_TIMEOUT (6*HZ)
143 /* hardware minimum and maximum for a single frame's data payload */
144 #define CP_MIN_MTU 60 /* TODO: allow lower, but pad */
145 #define CP_MAX_MTU 4096
148 /* NIC register offsets */
149 MAC0 = 0x00, /* Ethernet hardware address. */
150 MAR0 = 0x08, /* Multicast filter. */
151 StatsAddr = 0x10, /* 64-bit start addr of 64-byte DMA stats blk */
152 TxRingAddr = 0x20, /* 64-bit start addr of Tx ring */
153 HiTxRingAddr = 0x28, /* 64-bit start addr of high priority Tx ring */
154 Cmd = 0x37, /* Command register */
155 IntrMask = 0x3C, /* Interrupt mask */
156 IntrStatus = 0x3E, /* Interrupt status */
157 TxConfig = 0x40, /* Tx configuration */
158 ChipVersion = 0x43, /* 8-bit chip version, inside TxConfig */
159 RxConfig = 0x44, /* Rx configuration */
160 RxMissed = 0x4C, /* 24 bits valid, write clears */
161 Cfg9346 = 0x50, /* EEPROM select/control; Cfg reg [un]lock */
162 Config1 = 0x52, /* Config1 */
163 Config3 = 0x59, /* Config3 */
164 Config4 = 0x5A, /* Config4 */
165 MultiIntr = 0x5C, /* Multiple interrupt select */
166 BasicModeCtrl = 0x62, /* MII BMCR */
167 BasicModeStatus = 0x64, /* MII BMSR */
168 NWayAdvert = 0x66, /* MII ADVERTISE */
169 NWayLPAR = 0x68, /* MII LPA */
170 NWayExpansion = 0x6A, /* MII Expansion */
171 Config5 = 0xD8, /* Config5 */
172 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
173 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
174 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
175 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
176 RxRingAddr = 0xE4, /* 64-bit start addr of Rx ring */
177 TxThresh = 0xEC, /* Early Tx threshold */
178 OldRxBufAddr = 0x30, /* DMA address of Rx ring buffer (C mode) */
179 OldTSD0 = 0x10, /* DMA address of first Tx desc (C mode) */
181 /* Tx and Rx status descriptors */
182 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
183 RingEnd = (1 << 30), /* End of descriptor ring */
184 FirstFrag = (1 << 29), /* First segment of a packet */
185 LastFrag = (1 << 28), /* Final segment of a packet */
186 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
187 MSSShift = 16, /* MSS value position */
188 MSSMask = 0xfff, /* MSS value: 11 bits */
189 TxError = (1 << 23), /* Tx error summary */
190 RxError = (1 << 20), /* Rx error summary */
191 IPCS = (1 << 18), /* Calculate IP checksum */
192 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
193 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
194 TxVlanTag = (1 << 17), /* Add VLAN tag */
195 RxVlanTagged = (1 << 16), /* Rx VLAN tag available */
196 IPFail = (1 << 15), /* IP checksum failed */
197 UDPFail = (1 << 14), /* UDP/IP checksum failed */
198 TCPFail = (1 << 13), /* TCP/IP checksum failed */
199 NormalTxPoll = (1 << 6), /* One or more normal Tx packets to send */
200 PID1 = (1 << 17), /* 2 protocol id bits: 0==non-IP, */
201 PID0 = (1 << 16), /* 1==UDP/IP, 2==TCP/IP, 3==IP */
205 TxFIFOUnder = (1 << 25), /* Tx FIFO underrun */
206 TxOWC = (1 << 22), /* Tx Out-of-window collision */
207 TxLinkFail = (1 << 21), /* Link failed during Tx of packet */
208 TxMaxCol = (1 << 20), /* Tx aborted due to excessive collisions */
209 TxColCntShift = 16, /* Shift, to get 4-bit Tx collision cnt */
210 TxColCntMask = 0x01 | 0x02 | 0x04 | 0x08, /* 4-bit collision count */
211 RxErrFrame = (1 << 27), /* Rx frame alignment error */
212 RxMcast = (1 << 26), /* Rx multicast packet rcv'd */
213 RxErrCRC = (1 << 18), /* Rx CRC error */
214 RxErrRunt = (1 << 19), /* Rx error, packet < 64 bytes */
215 RxErrLong = (1 << 21), /* Rx error, packet > 4096 bytes */
216 RxErrFIFO = (1 << 22), /* Rx error, FIFO overflowed, pkt bad */
218 /* StatsAddr register */
219 DumpStats = (1 << 3), /* Begin stats dump */
221 /* RxConfig register */
222 RxCfgFIFOShift = 13, /* Shift, to get Rx FIFO thresh value */
223 RxCfgDMAShift = 8, /* Shift, to get Rx Max DMA value */
224 AcceptErr = 0x20, /* Accept packets with CRC errors */
225 AcceptRunt = 0x10, /* Accept runt (<64 bytes) packets */
226 AcceptBroadcast = 0x08, /* Accept broadcast packets */
227 AcceptMulticast = 0x04, /* Accept multicast packets */
228 AcceptMyPhys = 0x02, /* Accept pkts with our MAC as dest */
229 AcceptAllPhys = 0x01, /* Accept all pkts w/ physical dest */
231 /* IntrMask / IntrStatus registers */
232 PciErr = (1 << 15), /* System error on the PCI bus */
233 TimerIntr = (1 << 14), /* Asserted when TCTR reaches TimerInt value */
234 LenChg = (1 << 13), /* Cable length change */
235 SWInt = (1 << 8), /* Software-requested interrupt */
236 TxEmpty = (1 << 7), /* No Tx descriptors available */
237 RxFIFOOvr = (1 << 6), /* Rx FIFO Overflow */
238 LinkChg = (1 << 5), /* Packet underrun, or link change */
239 RxEmpty = (1 << 4), /* No Rx descriptors available */
240 TxErr = (1 << 3), /* Tx error */
241 TxOK = (1 << 2), /* Tx packet sent */
242 RxErr = (1 << 1), /* Rx error */
243 RxOK = (1 << 0), /* Rx packet received */
244 IntrResvd = (1 << 10), /* reserved, according to RealTek engineers,
245 but hardware likes to raise it */
247 IntrAll = PciErr | TimerIntr | LenChg | SWInt | TxEmpty |
248 RxFIFOOvr | LinkChg | RxEmpty | TxErr | TxOK |
249 RxErr | RxOK | IntrResvd,
251 /* C mode command register */
252 CmdReset = (1 << 4), /* Enable to reset; self-clearing */
253 RxOn = (1 << 3), /* Rx mode enable */
254 TxOn = (1 << 2), /* Tx mode enable */
256 /* C+ mode command register */
257 RxVlanOn = (1 << 6), /* Rx VLAN de-tagging enable */
258 RxChkSum = (1 << 5), /* Rx checksum offload enable */
259 PCIDAC = (1 << 4), /* PCI Dual Address Cycle (64-bit PCI) */
260 PCIMulRW = (1 << 3), /* Enable PCI read/write multiple */
261 CpRxOn = (1 << 1), /* Rx mode enable */
262 CpTxOn = (1 << 0), /* Tx mode enable */
264 /* Cfg9436 EEPROM control register */
265 Cfg9346_Lock = 0x00, /* Lock ConfigX/MII register access */
266 Cfg9346_Unlock = 0xC0, /* Unlock ConfigX/MII register access */
268 /* TxConfig register */
269 IFG = (1 << 25) | (1 << 24), /* standard IEEE interframe gap */
270 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
272 /* Early Tx Threshold register */
273 TxThreshMask = 0x3f, /* Mask bits 5-0 */
274 TxThreshMax = 2048, /* Max early Tx threshold */
276 /* Config1 register */
277 DriverLoaded = (1 << 5), /* Software marker, driver is loaded */
278 LWACT = (1 << 4), /* LWAKE active mode */
279 PMEnable = (1 << 0), /* Enable various PM features of chip */
281 /* Config3 register */
282 PARMEnable = (1 << 6), /* Enable auto-loading of PHY parms */
283 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
284 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
286 /* Config4 register */
287 LWPTN = (1 << 1), /* LWAKE Pattern */
288 LWPME = (1 << 4), /* LANWAKE vs PMEB */
290 /* Config5 register */
291 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
292 MWF = (1 << 5), /* Accept Multicast wakeup frame */
293 UWF = (1 << 4), /* Accept Unicast wakeup frame */
294 LANWake = (1 << 1), /* Enable LANWake signal */
295 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
297 cp_norx_intr_mask = PciErr | LinkChg | TxOK | TxErr | TxEmpty,
298 cp_rx_intr_mask = RxOK | RxErr | RxEmpty | RxFIFOOvr,
299 cp_intr_mask = cp_rx_intr_mask | cp_norx_intr_mask,
302 static const unsigned int cp_rx_config =
303 (RX_FIFO_THRESH << RxCfgFIFOShift) |
304 (RX_DMA_BURST << RxCfgDMAShift);
312 struct cp_dma_stats {
326 } __attribute__((packed));
328 struct cp_extra_stats {
329 unsigned long rx_frags;
334 struct net_device *dev;
338 struct pci_dev *pdev;
342 struct net_device_stats net_stats;
343 struct cp_extra_stats cp_stats;
345 unsigned rx_head ____cacheline_aligned;
347 struct cp_desc *rx_ring;
348 struct sk_buff *rx_skb[CP_RX_RING_SIZE];
350 unsigned tx_head ____cacheline_aligned;
352 struct cp_desc *tx_ring;
353 struct sk_buff *tx_skb[CP_TX_RING_SIZE];
356 unsigned wol_enabled : 1; /* Is Wake-on-LAN enabled? */
359 struct vlan_group *vlgrp;
363 struct mii_if_info mii_if;
366 #define cpr8(reg) readb(cp->regs + (reg))
367 #define cpr16(reg) readw(cp->regs + (reg))
368 #define cpr32(reg) readl(cp->regs + (reg))
369 #define cpw8(reg,val) writeb((val), cp->regs + (reg))
370 #define cpw16(reg,val) writew((val), cp->regs + (reg))
371 #define cpw32(reg,val) writel((val), cp->regs + (reg))
372 #define cpw8_f(reg,val) do { \
373 writeb((val), cp->regs + (reg)); \
374 readb(cp->regs + (reg)); \
376 #define cpw16_f(reg,val) do { \
377 writew((val), cp->regs + (reg)); \
378 readw(cp->regs + (reg)); \
380 #define cpw32_f(reg,val) do { \
381 writel((val), cp->regs + (reg)); \
382 readl(cp->regs + (reg)); \
386 static void __cp_set_rx_mode (struct net_device *dev);
387 static void cp_tx (struct cp_private *cp);
388 static void cp_clean_rings (struct cp_private *cp);
389 #ifdef CONFIG_NET_POLL_CONTROLLER
390 static void cp_poll_controller(struct net_device *dev);
392 static int cp_get_eeprom_len(struct net_device *dev);
393 static int cp_get_eeprom(struct net_device *dev,
394 struct ethtool_eeprom *eeprom, u8 *data);
395 static int cp_set_eeprom(struct net_device *dev,
396 struct ethtool_eeprom *eeprom, u8 *data);
398 static struct pci_device_id cp_pci_tbl[] = {
399 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139), },
400 { PCI_DEVICE(PCI_VENDOR_ID_TTTECH, PCI_DEVICE_ID_TTTECH_MC322), },
403 MODULE_DEVICE_TABLE(pci, cp_pci_tbl);
406 const char str[ETH_GSTRING_LEN];
407 } ethtool_stats_keys[] = {
426 static void cp_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
428 struct cp_private *cp = netdev_priv(dev);
431 spin_lock_irqsave(&cp->lock, flags);
434 cp->cpcmd |= RxVlanOn;
436 cp->cpcmd &= ~RxVlanOn;
438 cpw16(CpCmd, cp->cpcmd);
439 spin_unlock_irqrestore(&cp->lock, flags);
441 #endif /* CP_VLAN_TAG_USED */
443 static inline void cp_set_rxbufsize (struct cp_private *cp)
445 unsigned int mtu = cp->dev->mtu;
447 if (mtu > ETH_DATA_LEN)
448 /* MTU + ethernet header + FCS + optional VLAN tag */
449 cp->rx_buf_sz = mtu + ETH_HLEN + 8;
451 cp->rx_buf_sz = PKT_BUF_SZ;
454 static inline void cp_rx_skb (struct cp_private *cp, struct sk_buff *skb,
455 struct cp_desc *desc)
457 skb->protocol = eth_type_trans (skb, cp->dev);
459 cp->net_stats.rx_packets++;
460 cp->net_stats.rx_bytes += skb->len;
461 cp->dev->last_rx = jiffies;
464 if (cp->vlgrp && (desc->opts2 & RxVlanTagged)) {
465 vlan_hwaccel_receive_skb(skb, cp->vlgrp,
466 be16_to_cpu(desc->opts2 & 0xffff));
469 netif_receive_skb(skb);
472 static void cp_rx_err_acct (struct cp_private *cp, unsigned rx_tail,
475 if (netif_msg_rx_err (cp))
477 "%s: rx err, slot %d status 0x%x len %d\n",
478 cp->dev->name, rx_tail, status, len);
479 cp->net_stats.rx_errors++;
480 if (status & RxErrFrame)
481 cp->net_stats.rx_frame_errors++;
482 if (status & RxErrCRC)
483 cp->net_stats.rx_crc_errors++;
484 if ((status & RxErrRunt) || (status & RxErrLong))
485 cp->net_stats.rx_length_errors++;
486 if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag))
487 cp->net_stats.rx_length_errors++;
488 if (status & RxErrFIFO)
489 cp->net_stats.rx_fifo_errors++;
492 static inline unsigned int cp_rx_csum_ok (u32 status)
494 unsigned int protocol = (status >> 16) & 0x3;
496 if (likely((protocol == RxProtoTCP) && (!(status & TCPFail))))
498 else if ((protocol == RxProtoUDP) && (!(status & UDPFail)))
500 else if ((protocol == RxProtoIP) && (!(status & IPFail)))
505 static int cp_rx_poll (struct net_device *dev, int *budget)
507 struct cp_private *cp = netdev_priv(dev);
508 unsigned rx_tail = cp->rx_tail;
509 unsigned rx_work = dev->quota;
514 cpw16(IntrStatus, cp_rx_intr_mask);
519 struct sk_buff *skb, *new_skb;
520 struct cp_desc *desc;
523 skb = cp->rx_skb[rx_tail];
526 desc = &cp->rx_ring[rx_tail];
527 status = le32_to_cpu(desc->opts1);
528 if (status & DescOwn)
531 len = (status & 0x1fff) - 4;
532 mapping = le64_to_cpu(desc->addr);
534 if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag)) {
535 /* we don't support incoming fragmented frames.
536 * instead, we attempt to ensure that the
537 * pre-allocated RX skbs are properly sized such
538 * that RX fragments are never encountered
540 cp_rx_err_acct(cp, rx_tail, status, len);
541 cp->net_stats.rx_dropped++;
542 cp->cp_stats.rx_frags++;
546 if (status & (RxError | RxErrFIFO)) {
547 cp_rx_err_acct(cp, rx_tail, status, len);
551 if (netif_msg_rx_status(cp))
552 printk(KERN_DEBUG "%s: rx slot %d status 0x%x len %d\n",
553 dev->name, rx_tail, status, len);
555 buflen = cp->rx_buf_sz + RX_OFFSET;
556 new_skb = dev_alloc_skb (buflen);
558 cp->net_stats.rx_dropped++;
562 skb_reserve(new_skb, RX_OFFSET);
564 pci_unmap_single(cp->pdev, mapping,
565 buflen, PCI_DMA_FROMDEVICE);
567 /* Handle checksum offloading for incoming packets. */
568 if (cp_rx_csum_ok(status))
569 skb->ip_summed = CHECKSUM_UNNECESSARY;
571 skb->ip_summed = CHECKSUM_NONE;
575 mapping = pci_map_single(cp->pdev, new_skb->data, buflen,
577 cp->rx_skb[rx_tail] = new_skb;
579 cp_rx_skb(cp, skb, desc);
583 cp->rx_ring[rx_tail].opts2 = 0;
584 cp->rx_ring[rx_tail].addr = cpu_to_le64(mapping);
585 if (rx_tail == (CP_RX_RING_SIZE - 1))
586 desc->opts1 = cpu_to_le32(DescOwn | RingEnd |
589 desc->opts1 = cpu_to_le32(DescOwn | cp->rx_buf_sz);
590 rx_tail = NEXT_RX(rx_tail);
596 cp->rx_tail = rx_tail;
601 /* if we did not reach work limit, then we're done with
602 * this round of polling
607 if (cpr16(IntrStatus) & cp_rx_intr_mask)
610 local_irq_save(flags);
611 cpw16_f(IntrMask, cp_intr_mask);
612 __netif_rx_complete(dev);
613 local_irq_restore(flags);
618 return 1; /* not done */
621 static irqreturn_t cp_interrupt (int irq, void *dev_instance)
623 struct net_device *dev = dev_instance;
624 struct cp_private *cp;
627 if (unlikely(dev == NULL))
629 cp = netdev_priv(dev);
631 status = cpr16(IntrStatus);
632 if (!status || (status == 0xFFFF))
635 if (netif_msg_intr(cp))
636 printk(KERN_DEBUG "%s: intr, status %04x cmd %02x cpcmd %04x\n",
637 dev->name, status, cpr8(Cmd), cpr16(CpCmd));
639 cpw16(IntrStatus, status & ~cp_rx_intr_mask);
641 spin_lock(&cp->lock);
643 /* close possible race's with dev_close */
644 if (unlikely(!netif_running(dev))) {
646 spin_unlock(&cp->lock);
650 if (status & (RxOK | RxErr | RxEmpty | RxFIFOOvr))
651 if (netif_rx_schedule_prep(dev)) {
652 cpw16_f(IntrMask, cp_norx_intr_mask);
653 __netif_rx_schedule(dev);
656 if (status & (TxOK | TxErr | TxEmpty | SWInt))
658 if (status & LinkChg)
659 mii_check_media(&cp->mii_if, netif_msg_link(cp), false);
661 spin_unlock(&cp->lock);
663 if (status & PciErr) {
666 pci_read_config_word(cp->pdev, PCI_STATUS, &pci_status);
667 pci_write_config_word(cp->pdev, PCI_STATUS, pci_status);
668 printk(KERN_ERR "%s: PCI bus error, status=%04x, PCI status=%04x\n",
669 dev->name, status, pci_status);
671 /* TODO: reset hardware */
677 #ifdef CONFIG_NET_POLL_CONTROLLER
679 * Polling receive - used by netconsole and other diagnostic tools
680 * to allow network i/o with interrupts disabled.
682 static void cp_poll_controller(struct net_device *dev)
684 disable_irq(dev->irq);
685 cp_interrupt(dev->irq, dev);
686 enable_irq(dev->irq);
690 static void cp_tx (struct cp_private *cp)
692 unsigned tx_head = cp->tx_head;
693 unsigned tx_tail = cp->tx_tail;
695 while (tx_tail != tx_head) {
696 struct cp_desc *txd = cp->tx_ring + tx_tail;
701 status = le32_to_cpu(txd->opts1);
702 if (status & DescOwn)
705 skb = cp->tx_skb[tx_tail];
708 pci_unmap_single(cp->pdev, le64_to_cpu(txd->addr),
709 le32_to_cpu(txd->opts1) & 0xffff,
712 if (status & LastFrag) {
713 if (status & (TxError | TxFIFOUnder)) {
714 if (netif_msg_tx_err(cp))
715 printk(KERN_DEBUG "%s: tx err, status 0x%x\n",
716 cp->dev->name, status);
717 cp->net_stats.tx_errors++;
719 cp->net_stats.tx_window_errors++;
720 if (status & TxMaxCol)
721 cp->net_stats.tx_aborted_errors++;
722 if (status & TxLinkFail)
723 cp->net_stats.tx_carrier_errors++;
724 if (status & TxFIFOUnder)
725 cp->net_stats.tx_fifo_errors++;
727 cp->net_stats.collisions +=
728 ((status >> TxColCntShift) & TxColCntMask);
729 cp->net_stats.tx_packets++;
730 cp->net_stats.tx_bytes += skb->len;
731 if (netif_msg_tx_done(cp))
732 printk(KERN_DEBUG "%s: tx done, slot %d\n", cp->dev->name, tx_tail);
734 dev_kfree_skb_irq(skb);
737 cp->tx_skb[tx_tail] = NULL;
739 tx_tail = NEXT_TX(tx_tail);
742 cp->tx_tail = tx_tail;
744 if (TX_BUFFS_AVAIL(cp) > (MAX_SKB_FRAGS + 1))
745 netif_wake_queue(cp->dev);
748 static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
750 struct cp_private *cp = netdev_priv(dev);
753 unsigned long intr_flags;
759 spin_lock_irqsave(&cp->lock, intr_flags);
761 /* This is a hard error, log it. */
762 if (TX_BUFFS_AVAIL(cp) <= (skb_shinfo(skb)->nr_frags + 1)) {
763 netif_stop_queue(dev);
764 spin_unlock_irqrestore(&cp->lock, intr_flags);
765 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
771 if (cp->vlgrp && vlan_tx_tag_present(skb))
772 vlan_tag = TxVlanTag | cpu_to_be16(vlan_tx_tag_get(skb));
776 eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
777 if (dev->features & NETIF_F_TSO)
778 mss = skb_shinfo(skb)->gso_size;
780 if (skb_shinfo(skb)->nr_frags == 0) {
781 struct cp_desc *txd = &cp->tx_ring[entry];
786 mapping = pci_map_single(cp->pdev, skb->data, len, PCI_DMA_TODEVICE);
787 CP_VLAN_TX_TAG(txd, vlan_tag);
788 txd->addr = cpu_to_le64(mapping);
791 flags = eor | len | DescOwn | FirstFrag | LastFrag;
794 flags |= LargeSend | ((mss & MSSMask) << MSSShift);
795 else if (skb->ip_summed == CHECKSUM_PARTIAL) {
796 const struct iphdr *ip = ip_hdr(skb);
797 if (ip->protocol == IPPROTO_TCP)
798 flags |= IPCS | TCPCS;
799 else if (ip->protocol == IPPROTO_UDP)
800 flags |= IPCS | UDPCS;
802 WARN_ON(1); /* we need a WARN() */
805 txd->opts1 = cpu_to_le32(flags);
808 cp->tx_skb[entry] = skb;
809 entry = NEXT_TX(entry);
812 u32 first_len, first_eor;
813 dma_addr_t first_mapping;
814 int frag, first_entry = entry;
815 const struct iphdr *ip = ip_hdr(skb);
817 /* We must give this initial chunk to the device last.
818 * Otherwise we could race with the device.
821 first_len = skb_headlen(skb);
822 first_mapping = pci_map_single(cp->pdev, skb->data,
823 first_len, PCI_DMA_TODEVICE);
824 cp->tx_skb[entry] = skb;
825 entry = NEXT_TX(entry);
827 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
828 skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
833 len = this_frag->size;
834 mapping = pci_map_single(cp->pdev,
835 ((void *) page_address(this_frag->page) +
836 this_frag->page_offset),
837 len, PCI_DMA_TODEVICE);
838 eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
840 ctrl = eor | len | DescOwn;
844 ((mss & MSSMask) << MSSShift);
845 else if (skb->ip_summed == CHECKSUM_PARTIAL) {
846 if (ip->protocol == IPPROTO_TCP)
847 ctrl |= IPCS | TCPCS;
848 else if (ip->protocol == IPPROTO_UDP)
849 ctrl |= IPCS | UDPCS;
854 if (frag == skb_shinfo(skb)->nr_frags - 1)
857 txd = &cp->tx_ring[entry];
858 CP_VLAN_TX_TAG(txd, vlan_tag);
859 txd->addr = cpu_to_le64(mapping);
862 txd->opts1 = cpu_to_le32(ctrl);
865 cp->tx_skb[entry] = skb;
866 entry = NEXT_TX(entry);
869 txd = &cp->tx_ring[first_entry];
870 CP_VLAN_TX_TAG(txd, vlan_tag);
871 txd->addr = cpu_to_le64(first_mapping);
874 if (skb->ip_summed == CHECKSUM_PARTIAL) {
875 if (ip->protocol == IPPROTO_TCP)
876 txd->opts1 = cpu_to_le32(first_eor | first_len |
877 FirstFrag | DescOwn |
879 else if (ip->protocol == IPPROTO_UDP)
880 txd->opts1 = cpu_to_le32(first_eor | first_len |
881 FirstFrag | DescOwn |
886 txd->opts1 = cpu_to_le32(first_eor | first_len |
887 FirstFrag | DescOwn);
891 if (netif_msg_tx_queued(cp))
892 printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
893 dev->name, entry, skb->len);
894 if (TX_BUFFS_AVAIL(cp) <= (MAX_SKB_FRAGS + 1))
895 netif_stop_queue(dev);
897 spin_unlock_irqrestore(&cp->lock, intr_flags);
899 cpw8(TxPoll, NormalTxPoll);
900 dev->trans_start = jiffies;
905 /* Set or clear the multicast filter for this adaptor.
906 This routine is not state sensitive and need not be SMP locked. */
908 static void __cp_set_rx_mode (struct net_device *dev)
910 struct cp_private *cp = netdev_priv(dev);
911 u32 mc_filter[2]; /* Multicast hash filter */
915 /* Note: do not reorder, GCC is clever about common statements. */
916 if (dev->flags & IFF_PROMISC) {
917 /* Unconditionally log net taps. */
919 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
921 mc_filter[1] = mc_filter[0] = 0xffffffff;
922 } else if ((dev->mc_count > multicast_filter_limit)
923 || (dev->flags & IFF_ALLMULTI)) {
924 /* Too many to filter perfectly -- accept all multicasts. */
925 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
926 mc_filter[1] = mc_filter[0] = 0xffffffff;
928 struct dev_mc_list *mclist;
929 rx_mode = AcceptBroadcast | AcceptMyPhys;
930 mc_filter[1] = mc_filter[0] = 0;
931 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
932 i++, mclist = mclist->next) {
933 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
935 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
936 rx_mode |= AcceptMulticast;
940 /* We can safely update without stopping the chip. */
941 tmp = cp_rx_config | rx_mode;
942 if (cp->rx_config != tmp) {
943 cpw32_f (RxConfig, tmp);
946 cpw32_f (MAR0 + 0, mc_filter[0]);
947 cpw32_f (MAR0 + 4, mc_filter[1]);
950 static void cp_set_rx_mode (struct net_device *dev)
953 struct cp_private *cp = netdev_priv(dev);
955 spin_lock_irqsave (&cp->lock, flags);
956 __cp_set_rx_mode(dev);
957 spin_unlock_irqrestore (&cp->lock, flags);
960 static void __cp_get_stats(struct cp_private *cp)
962 /* only lower 24 bits valid; write any value to clear */
963 cp->net_stats.rx_missed_errors += (cpr32 (RxMissed) & 0xffffff);
967 static struct net_device_stats *cp_get_stats(struct net_device *dev)
969 struct cp_private *cp = netdev_priv(dev);
972 /* The chip only need report frame silently dropped. */
973 spin_lock_irqsave(&cp->lock, flags);
974 if (netif_running(dev) && netif_device_present(dev))
976 spin_unlock_irqrestore(&cp->lock, flags);
978 return &cp->net_stats;
981 static void cp_stop_hw (struct cp_private *cp)
983 cpw16(IntrStatus, ~(cpr16(IntrStatus)));
984 cpw16_f(IntrMask, 0);
987 cpw16_f(IntrStatus, ~(cpr16(IntrStatus)));
990 cp->tx_head = cp->tx_tail = 0;
993 static void cp_reset_hw (struct cp_private *cp)
995 unsigned work = 1000;
1000 if (!(cpr8(Cmd) & CmdReset))
1003 schedule_timeout_uninterruptible(10);
1006 printk(KERN_ERR "%s: hardware reset timeout\n", cp->dev->name);
1009 static inline void cp_start_hw (struct cp_private *cp)
1011 cpw16(CpCmd, cp->cpcmd);
1012 cpw8(Cmd, RxOn | TxOn);
1015 static void cp_init_hw (struct cp_private *cp)
1017 struct net_device *dev = cp->dev;
1018 dma_addr_t ring_dma;
1022 cpw8_f (Cfg9346, Cfg9346_Unlock);
1024 /* Restore our idea of the MAC address. */
1025 cpw32_f (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1026 cpw32_f (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1029 cpw8(TxThresh, 0x06); /* XXX convert magic num to a constant */
1031 __cp_set_rx_mode(dev);
1032 cpw32_f (TxConfig, IFG | (TX_DMA_BURST << TxDMAShift));
1034 cpw8(Config1, cpr8(Config1) | DriverLoaded | PMEnable);
1035 /* Disable Wake-on-LAN. Can be turned on with ETHTOOL_SWOL */
1036 cpw8(Config3, PARMEnable);
1037 cp->wol_enabled = 0;
1039 cpw8(Config5, cpr8(Config5) & PMEStatus);
1041 cpw32_f(HiTxRingAddr, 0);
1042 cpw32_f(HiTxRingAddr + 4, 0);
1044 ring_dma = cp->ring_dma;
1045 cpw32_f(RxRingAddr, ring_dma & 0xffffffff);
1046 cpw32_f(RxRingAddr + 4, (ring_dma >> 16) >> 16);
1048 ring_dma += sizeof(struct cp_desc) * CP_RX_RING_SIZE;
1049 cpw32_f(TxRingAddr, ring_dma & 0xffffffff);
1050 cpw32_f(TxRingAddr + 4, (ring_dma >> 16) >> 16);
1052 cpw16(MultiIntr, 0);
1054 cpw16_f(IntrMask, cp_intr_mask);
1056 cpw8_f(Cfg9346, Cfg9346_Lock);
1059 static int cp_refill_rx (struct cp_private *cp)
1063 for (i = 0; i < CP_RX_RING_SIZE; i++) {
1064 struct sk_buff *skb;
1067 skb = dev_alloc_skb(cp->rx_buf_sz + RX_OFFSET);
1071 skb_reserve(skb, RX_OFFSET);
1073 mapping = pci_map_single(cp->pdev, skb->data, cp->rx_buf_sz,
1074 PCI_DMA_FROMDEVICE);
1075 cp->rx_skb[i] = skb;
1077 cp->rx_ring[i].opts2 = 0;
1078 cp->rx_ring[i].addr = cpu_to_le64(mapping);
1079 if (i == (CP_RX_RING_SIZE - 1))
1080 cp->rx_ring[i].opts1 =
1081 cpu_to_le32(DescOwn | RingEnd | cp->rx_buf_sz);
1083 cp->rx_ring[i].opts1 =
1084 cpu_to_le32(DescOwn | cp->rx_buf_sz);
1094 static void cp_init_rings_index (struct cp_private *cp)
1097 cp->tx_head = cp->tx_tail = 0;
1100 static int cp_init_rings (struct cp_private *cp)
1102 memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
1103 cp->tx_ring[CP_TX_RING_SIZE - 1].opts1 = cpu_to_le32(RingEnd);
1105 cp_init_rings_index(cp);
1107 return cp_refill_rx (cp);
1110 static int cp_alloc_rings (struct cp_private *cp)
1114 mem = pci_alloc_consistent(cp->pdev, CP_RING_BYTES, &cp->ring_dma);
1119 cp->tx_ring = &cp->rx_ring[CP_RX_RING_SIZE];
1121 return cp_init_rings(cp);
1124 static void cp_clean_rings (struct cp_private *cp)
1126 struct cp_desc *desc;
1129 for (i = 0; i < CP_RX_RING_SIZE; i++) {
1130 if (cp->rx_skb[i]) {
1131 desc = cp->rx_ring + i;
1132 pci_unmap_single(cp->pdev, le64_to_cpu(desc->addr),
1133 cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
1134 dev_kfree_skb(cp->rx_skb[i]);
1138 for (i = 0; i < CP_TX_RING_SIZE; i++) {
1139 if (cp->tx_skb[i]) {
1140 struct sk_buff *skb = cp->tx_skb[i];
1142 desc = cp->tx_ring + i;
1143 pci_unmap_single(cp->pdev, le64_to_cpu(desc->addr),
1144 le32_to_cpu(desc->opts1) & 0xffff,
1146 if (le32_to_cpu(desc->opts1) & LastFrag)
1148 cp->net_stats.tx_dropped++;
1152 memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
1153 memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
1155 memset(cp->rx_skb, 0, sizeof(struct sk_buff *) * CP_RX_RING_SIZE);
1156 memset(cp->tx_skb, 0, sizeof(struct sk_buff *) * CP_TX_RING_SIZE);
1159 static void cp_free_rings (struct cp_private *cp)
1162 pci_free_consistent(cp->pdev, CP_RING_BYTES, cp->rx_ring, cp->ring_dma);
1167 static int cp_open (struct net_device *dev)
1169 struct cp_private *cp = netdev_priv(dev);
1172 if (netif_msg_ifup(cp))
1173 printk(KERN_DEBUG "%s: enabling interface\n", dev->name);
1175 rc = cp_alloc_rings(cp);
1181 rc = request_irq(dev->irq, cp_interrupt, IRQF_SHARED, dev->name, dev);
1185 netif_carrier_off(dev);
1186 mii_check_media(&cp->mii_if, netif_msg_link(cp), true);
1187 netif_start_queue(dev);
1197 static int cp_close (struct net_device *dev)
1199 struct cp_private *cp = netdev_priv(dev);
1200 unsigned long flags;
1202 if (netif_msg_ifdown(cp))
1203 printk(KERN_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 synchronize_irq(dev->irq);
1215 free_irq(dev->irq, dev);
1222 static int cp_change_mtu(struct net_device *dev, int new_mtu)
1224 struct cp_private *cp = netdev_priv(dev);
1226 unsigned long flags;
1228 /* check for invalid MTU, according to hardware limits */
1229 if (new_mtu < CP_MIN_MTU || new_mtu > CP_MAX_MTU)
1232 /* if network interface not up, no need for complexity */
1233 if (!netif_running(dev)) {
1235 cp_set_rxbufsize(cp); /* set new rx buf size */
1239 spin_lock_irqsave(&cp->lock, flags);
1241 cp_stop_hw(cp); /* stop h/w and free rings */
1245 cp_set_rxbufsize(cp); /* set new rx buf size */
1247 rc = cp_init_rings(cp); /* realloc and restart h/w */
1250 spin_unlock_irqrestore(&cp->lock, flags);
1256 static const char mii_2_8139_map[8] = {
1267 static int mdio_read(struct net_device *dev, int phy_id, int location)
1269 struct cp_private *cp = netdev_priv(dev);
1271 return location < 8 && mii_2_8139_map[location] ?
1272 readw(cp->regs + mii_2_8139_map[location]) : 0;
1276 static void mdio_write(struct net_device *dev, int phy_id, int location,
1279 struct cp_private *cp = netdev_priv(dev);
1281 if (location == 0) {
1282 cpw8(Cfg9346, Cfg9346_Unlock);
1283 cpw16(BasicModeCtrl, value);
1284 cpw8(Cfg9346, Cfg9346_Lock);
1285 } else if (location < 8 && mii_2_8139_map[location])
1286 cpw16(mii_2_8139_map[location], value);
1289 /* Set the ethtool Wake-on-LAN settings */
1290 static int netdev_set_wol (struct cp_private *cp,
1291 const struct ethtool_wolinfo *wol)
1295 options = cpr8 (Config3) & ~(LinkUp | MagicPacket);
1296 /* If WOL is being disabled, no need for complexity */
1298 if (wol->wolopts & WAKE_PHY) options |= LinkUp;
1299 if (wol->wolopts & WAKE_MAGIC) options |= MagicPacket;
1302 cpw8 (Cfg9346, Cfg9346_Unlock);
1303 cpw8 (Config3, options);
1304 cpw8 (Cfg9346, Cfg9346_Lock);
1306 options = 0; /* Paranoia setting */
1307 options = cpr8 (Config5) & ~(UWF | MWF | BWF);
1308 /* If WOL is being disabled, no need for complexity */
1310 if (wol->wolopts & WAKE_UCAST) options |= UWF;
1311 if (wol->wolopts & WAKE_BCAST) options |= BWF;
1312 if (wol->wolopts & WAKE_MCAST) options |= MWF;
1315 cpw8 (Config5, options);
1317 cp->wol_enabled = (wol->wolopts) ? 1 : 0;
1322 /* Get the ethtool Wake-on-LAN settings */
1323 static void netdev_get_wol (struct cp_private *cp,
1324 struct ethtool_wolinfo *wol)
1328 wol->wolopts = 0; /* Start from scratch */
1329 wol->supported = WAKE_PHY | WAKE_BCAST | WAKE_MAGIC |
1330 WAKE_MCAST | WAKE_UCAST;
1331 /* We don't need to go on if WOL is disabled */
1332 if (!cp->wol_enabled) return;
1334 options = cpr8 (Config3);
1335 if (options & LinkUp) wol->wolopts |= WAKE_PHY;
1336 if (options & MagicPacket) wol->wolopts |= WAKE_MAGIC;
1338 options = 0; /* Paranoia setting */
1339 options = cpr8 (Config5);
1340 if (options & UWF) wol->wolopts |= WAKE_UCAST;
1341 if (options & BWF) wol->wolopts |= WAKE_BCAST;
1342 if (options & MWF) wol->wolopts |= WAKE_MCAST;
1345 static void cp_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1347 struct cp_private *cp = netdev_priv(dev);
1349 strcpy (info->driver, DRV_NAME);
1350 strcpy (info->version, DRV_VERSION);
1351 strcpy (info->bus_info, pci_name(cp->pdev));
1354 static int cp_get_regs_len(struct net_device *dev)
1356 return CP_REGS_SIZE;
1359 static int cp_get_stats_count (struct net_device *dev)
1361 return CP_NUM_STATS;
1364 static int cp_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1366 struct cp_private *cp = netdev_priv(dev);
1368 unsigned long flags;
1370 spin_lock_irqsave(&cp->lock, flags);
1371 rc = mii_ethtool_gset(&cp->mii_if, cmd);
1372 spin_unlock_irqrestore(&cp->lock, flags);
1377 static int cp_set_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_sset(&cp->mii_if, cmd);
1385 spin_unlock_irqrestore(&cp->lock, flags);
1390 static int cp_nway_reset(struct net_device *dev)
1392 struct cp_private *cp = netdev_priv(dev);
1393 return mii_nway_restart(&cp->mii_if);
1396 static u32 cp_get_msglevel(struct net_device *dev)
1398 struct cp_private *cp = netdev_priv(dev);
1399 return cp->msg_enable;
1402 static void cp_set_msglevel(struct net_device *dev, u32 value)
1404 struct cp_private *cp = netdev_priv(dev);
1405 cp->msg_enable = value;
1408 static u32 cp_get_rx_csum(struct net_device *dev)
1410 struct cp_private *cp = netdev_priv(dev);
1411 return (cpr16(CpCmd) & RxChkSum) ? 1 : 0;
1414 static int cp_set_rx_csum(struct net_device *dev, u32 data)
1416 struct cp_private *cp = netdev_priv(dev);
1417 u16 cmd = cp->cpcmd, newcmd;
1424 newcmd &= ~RxChkSum;
1426 if (newcmd != cmd) {
1427 unsigned long flags;
1429 spin_lock_irqsave(&cp->lock, flags);
1431 cpw16_f(CpCmd, newcmd);
1432 spin_unlock_irqrestore(&cp->lock, flags);
1438 static void cp_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1441 struct cp_private *cp = netdev_priv(dev);
1442 unsigned long flags;
1444 if (regs->len < CP_REGS_SIZE)
1445 return /* -EINVAL */;
1447 regs->version = CP_REGS_VER;
1449 spin_lock_irqsave(&cp->lock, flags);
1450 memcpy_fromio(p, cp->regs, CP_REGS_SIZE);
1451 spin_unlock_irqrestore(&cp->lock, flags);
1454 static void cp_get_wol (struct net_device *dev, struct ethtool_wolinfo *wol)
1456 struct cp_private *cp = netdev_priv(dev);
1457 unsigned long flags;
1459 spin_lock_irqsave (&cp->lock, flags);
1460 netdev_get_wol (cp, wol);
1461 spin_unlock_irqrestore (&cp->lock, flags);
1464 static int cp_set_wol (struct net_device *dev, struct ethtool_wolinfo *wol)
1466 struct cp_private *cp = netdev_priv(dev);
1467 unsigned long flags;
1470 spin_lock_irqsave (&cp->lock, flags);
1471 rc = netdev_set_wol (cp, wol);
1472 spin_unlock_irqrestore (&cp->lock, flags);
1477 static void cp_get_strings (struct net_device *dev, u32 stringset, u8 *buf)
1479 switch (stringset) {
1481 memcpy(buf, ðtool_stats_keys, sizeof(ethtool_stats_keys));
1489 static void cp_get_ethtool_stats (struct net_device *dev,
1490 struct ethtool_stats *estats, u64 *tmp_stats)
1492 struct cp_private *cp = netdev_priv(dev);
1493 struct cp_dma_stats *nic_stats;
1497 nic_stats = pci_alloc_consistent(cp->pdev, sizeof(*nic_stats), &dma);
1501 /* begin NIC statistics dump */
1502 cpw32(StatsAddr + 4, (u64)dma >> 32);
1503 cpw32(StatsAddr, ((u64)dma & DMA_32BIT_MASK) | DumpStats);
1506 for (i = 0; i < 1000; i++) {
1507 if ((cpr32(StatsAddr) & DumpStats) == 0)
1511 cpw32(StatsAddr, 0);
1512 cpw32(StatsAddr + 4, 0);
1516 tmp_stats[i++] = le64_to_cpu(nic_stats->tx_ok);
1517 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok);
1518 tmp_stats[i++] = le64_to_cpu(nic_stats->tx_err);
1519 tmp_stats[i++] = le32_to_cpu(nic_stats->rx_err);
1520 tmp_stats[i++] = le16_to_cpu(nic_stats->rx_fifo);
1521 tmp_stats[i++] = le16_to_cpu(nic_stats->frame_align);
1522 tmp_stats[i++] = le32_to_cpu(nic_stats->tx_ok_1col);
1523 tmp_stats[i++] = le32_to_cpu(nic_stats->tx_ok_mcol);
1524 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok_phys);
1525 tmp_stats[i++] = le64_to_cpu(nic_stats->rx_ok_bcast);
1526 tmp_stats[i++] = le32_to_cpu(nic_stats->rx_ok_mcast);
1527 tmp_stats[i++] = le16_to_cpu(nic_stats->tx_abort);
1528 tmp_stats[i++] = le16_to_cpu(nic_stats->tx_underrun);
1529 tmp_stats[i++] = cp->cp_stats.rx_frags;
1530 BUG_ON(i != CP_NUM_STATS);
1532 pci_free_consistent(cp->pdev, sizeof(*nic_stats), nic_stats, dma);
1535 static const struct ethtool_ops cp_ethtool_ops = {
1536 .get_drvinfo = cp_get_drvinfo,
1537 .get_regs_len = cp_get_regs_len,
1538 .get_stats_count = cp_get_stats_count,
1539 .get_settings = cp_get_settings,
1540 .set_settings = cp_set_settings,
1541 .nway_reset = cp_nway_reset,
1542 .get_link = ethtool_op_get_link,
1543 .get_msglevel = cp_get_msglevel,
1544 .set_msglevel = cp_set_msglevel,
1545 .get_rx_csum = cp_get_rx_csum,
1546 .set_rx_csum = cp_set_rx_csum,
1547 .get_tx_csum = ethtool_op_get_tx_csum,
1548 .set_tx_csum = ethtool_op_set_tx_csum, /* local! */
1549 .get_sg = ethtool_op_get_sg,
1550 .set_sg = ethtool_op_set_sg,
1551 .get_tso = ethtool_op_get_tso,
1552 .set_tso = ethtool_op_set_tso,
1553 .get_regs = cp_get_regs,
1554 .get_wol = cp_get_wol,
1555 .set_wol = cp_set_wol,
1556 .get_strings = cp_get_strings,
1557 .get_ethtool_stats = cp_get_ethtool_stats,
1558 .get_perm_addr = ethtool_op_get_perm_addr,
1559 .get_eeprom_len = cp_get_eeprom_len,
1560 .get_eeprom = cp_get_eeprom,
1561 .set_eeprom = cp_set_eeprom,
1564 static int cp_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1566 struct cp_private *cp = netdev_priv(dev);
1568 unsigned long flags;
1570 if (!netif_running(dev))
1573 spin_lock_irqsave(&cp->lock, flags);
1574 rc = generic_mii_ioctl(&cp->mii_if, if_mii(rq), cmd, NULL);
1575 spin_unlock_irqrestore(&cp->lock, flags);
1579 /* Serial EEPROM section. */
1581 /* EEPROM_Ctrl bits. */
1582 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1583 #define EE_CS 0x08 /* EEPROM chip select. */
1584 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1585 #define EE_WRITE_0 0x00
1586 #define EE_WRITE_1 0x02
1587 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1588 #define EE_ENB (0x80 | EE_CS)
1590 /* Delay between EEPROM clock transitions.
1591 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1594 #define eeprom_delay() readl(ee_addr)
1596 /* The EEPROM commands include the alway-set leading bit. */
1597 #define EE_EXTEND_CMD (4)
1598 #define EE_WRITE_CMD (5)
1599 #define EE_READ_CMD (6)
1600 #define EE_ERASE_CMD (7)
1602 #define EE_EWDS_ADDR (0)
1603 #define EE_WRAL_ADDR (1)
1604 #define EE_ERAL_ADDR (2)
1605 #define EE_EWEN_ADDR (3)
1607 #define CP_EEPROM_MAGIC PCI_DEVICE_ID_REALTEK_8139
1609 static void eeprom_cmd_start(void __iomem *ee_addr)
1611 writeb (EE_ENB & ~EE_CS, ee_addr);
1612 writeb (EE_ENB, ee_addr);
1616 static void eeprom_cmd(void __iomem *ee_addr, int cmd, int cmd_len)
1620 /* Shift the command bits out. */
1621 for (i = cmd_len - 1; i >= 0; i--) {
1622 int dataval = (cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1623 writeb (EE_ENB | dataval, ee_addr);
1625 writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
1628 writeb (EE_ENB, ee_addr);
1632 static void eeprom_cmd_end(void __iomem *ee_addr)
1634 writeb (~EE_CS, ee_addr);
1638 static void eeprom_extend_cmd(void __iomem *ee_addr, int extend_cmd,
1641 int cmd = (EE_EXTEND_CMD << addr_len) | (extend_cmd << (addr_len - 2));
1643 eeprom_cmd_start(ee_addr);
1644 eeprom_cmd(ee_addr, cmd, 3 + addr_len);
1645 eeprom_cmd_end(ee_addr);
1648 static u16 read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1652 void __iomem *ee_addr = ioaddr + Cfg9346;
1653 int read_cmd = location | (EE_READ_CMD << addr_len);
1655 eeprom_cmd_start(ee_addr);
1656 eeprom_cmd(ee_addr, read_cmd, 3 + addr_len);
1658 for (i = 16; i > 0; i--) {
1659 writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
1662 (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 :
1664 writeb (EE_ENB, ee_addr);
1668 eeprom_cmd_end(ee_addr);
1673 static void write_eeprom(void __iomem *ioaddr, int location, u16 val,
1677 void __iomem *ee_addr = ioaddr + Cfg9346;
1678 int write_cmd = location | (EE_WRITE_CMD << addr_len);
1680 eeprom_extend_cmd(ee_addr, EE_EWEN_ADDR, addr_len);
1682 eeprom_cmd_start(ee_addr);
1683 eeprom_cmd(ee_addr, write_cmd, 3 + addr_len);
1684 eeprom_cmd(ee_addr, val, 16);
1685 eeprom_cmd_end(ee_addr);
1687 eeprom_cmd_start(ee_addr);
1688 for (i = 0; i < 20000; i++)
1689 if (readb(ee_addr) & EE_DATA_READ)
1691 eeprom_cmd_end(ee_addr);
1693 eeprom_extend_cmd(ee_addr, EE_EWDS_ADDR, addr_len);
1696 static int cp_get_eeprom_len(struct net_device *dev)
1698 struct cp_private *cp = netdev_priv(dev);
1701 spin_lock_irq(&cp->lock);
1702 size = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 256 : 128;
1703 spin_unlock_irq(&cp->lock);
1708 static int cp_get_eeprom(struct net_device *dev,
1709 struct ethtool_eeprom *eeprom, u8 *data)
1711 struct cp_private *cp = netdev_priv(dev);
1712 unsigned int addr_len;
1714 u32 offset = eeprom->offset >> 1;
1715 u32 len = eeprom->len;
1718 eeprom->magic = CP_EEPROM_MAGIC;
1720 spin_lock_irq(&cp->lock);
1722 addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6;
1724 if (eeprom->offset & 1) {
1725 val = read_eeprom(cp->regs, offset, addr_len);
1726 data[i++] = (u8)(val >> 8);
1730 while (i < len - 1) {
1731 val = read_eeprom(cp->regs, offset, addr_len);
1732 data[i++] = (u8)val;
1733 data[i++] = (u8)(val >> 8);
1738 val = read_eeprom(cp->regs, offset, addr_len);
1742 spin_unlock_irq(&cp->lock);
1746 static int cp_set_eeprom(struct net_device *dev,
1747 struct ethtool_eeprom *eeprom, u8 *data)
1749 struct cp_private *cp = netdev_priv(dev);
1750 unsigned int addr_len;
1752 u32 offset = eeprom->offset >> 1;
1753 u32 len = eeprom->len;
1756 if (eeprom->magic != CP_EEPROM_MAGIC)
1759 spin_lock_irq(&cp->lock);
1761 addr_len = read_eeprom(cp->regs, 0, 8) == 0x8129 ? 8 : 6;
1763 if (eeprom->offset & 1) {
1764 val = read_eeprom(cp->regs, offset, addr_len) & 0xff;
1765 val |= (u16)data[i++] << 8;
1766 write_eeprom(cp->regs, offset, val, addr_len);
1770 while (i < len - 1) {
1771 val = (u16)data[i++];
1772 val |= (u16)data[i++] << 8;
1773 write_eeprom(cp->regs, offset, val, addr_len);
1778 val = read_eeprom(cp->regs, offset, addr_len) & 0xff00;
1779 val |= (u16)data[i];
1780 write_eeprom(cp->regs, offset, val, addr_len);
1783 spin_unlock_irq(&cp->lock);
1787 /* Put the board into D3cold state and wait for WakeUp signal */
1788 static void cp_set_d3_state (struct cp_private *cp)
1790 pci_enable_wake (cp->pdev, 0, 1); /* Enable PME# generation */
1791 pci_set_power_state (cp->pdev, PCI_D3hot);
1794 static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1796 struct net_device *dev;
1797 struct cp_private *cp;
1800 resource_size_t pciaddr;
1801 unsigned int addr_len, i, pci_using_dac;
1805 static int version_printed;
1806 if (version_printed++ == 0)
1807 printk("%s", version);
1810 pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
1812 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
1813 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev < 0x20) {
1815 "This (id %04x:%04x rev %02x) is not an 8139C+ compatible chip\n",
1816 pdev->vendor, pdev->device, pci_rev);
1817 dev_err(&pdev->dev, "Try the \"8139too\" driver instead.\n");
1821 dev = alloc_etherdev(sizeof(struct cp_private));
1824 SET_MODULE_OWNER(dev);
1825 SET_NETDEV_DEV(dev, &pdev->dev);
1827 cp = netdev_priv(dev);
1830 cp->msg_enable = (debug < 0 ? CP_DEF_MSG_ENABLE : debug);
1831 spin_lock_init (&cp->lock);
1832 cp->mii_if.dev = dev;
1833 cp->mii_if.mdio_read = mdio_read;
1834 cp->mii_if.mdio_write = mdio_write;
1835 cp->mii_if.phy_id = CP_INTERNAL_PHY;
1836 cp->mii_if.phy_id_mask = 0x1f;
1837 cp->mii_if.reg_num_mask = 0x1f;
1838 cp_set_rxbufsize(cp);
1840 rc = pci_enable_device(pdev);
1844 rc = pci_set_mwi(pdev);
1846 goto err_out_disable;
1848 rc = pci_request_regions(pdev, DRV_NAME);
1852 pciaddr = pci_resource_start(pdev, 1);
1855 dev_err(&pdev->dev, "no MMIO resource\n");
1858 if (pci_resource_len(pdev, 1) < CP_REGS_SIZE) {
1860 dev_err(&pdev->dev, "MMIO resource (%llx) too small\n",
1861 (unsigned long long)pci_resource_len(pdev, 1));
1865 /* Configure DMA attributes. */
1866 if ((sizeof(dma_addr_t) > 4) &&
1867 !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK) &&
1868 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1873 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1876 "No usable DMA configuration, aborting.\n");
1879 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1882 "No usable consistent DMA configuration, "
1888 cp->cpcmd = (pci_using_dac ? PCIDAC : 0) |
1889 PCIMulRW | RxChkSum | CpRxOn | CpTxOn;
1891 regs = ioremap(pciaddr, CP_REGS_SIZE);
1894 dev_err(&pdev->dev, "Cannot map PCI MMIO (%Lx@%Lx)\n",
1895 (unsigned long long)pci_resource_len(pdev, 1),
1896 (unsigned long long)pciaddr);
1899 dev->base_addr = (unsigned long) regs;
1904 /* read MAC address from EEPROM */
1905 addr_len = read_eeprom (regs, 0, 8) == 0x8129 ? 8 : 6;
1906 for (i = 0; i < 3; i++)
1907 ((u16 *) (dev->dev_addr))[i] =
1908 le16_to_cpu (read_eeprom (regs, i + 7, addr_len));
1909 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1911 dev->open = cp_open;
1912 dev->stop = cp_close;
1913 dev->set_multicast_list = cp_set_rx_mode;
1914 dev->hard_start_xmit = cp_start_xmit;
1915 dev->get_stats = cp_get_stats;
1916 dev->do_ioctl = cp_ioctl;
1917 dev->poll = cp_rx_poll;
1918 #ifdef CONFIG_NET_POLL_CONTROLLER
1919 dev->poll_controller = cp_poll_controller;
1921 dev->weight = 16; /* arbitrary? from NAPI_HOWTO.txt. */
1923 dev->change_mtu = cp_change_mtu;
1925 dev->ethtool_ops = &cp_ethtool_ops;
1927 dev->tx_timeout = cp_tx_timeout;
1928 dev->watchdog_timeo = TX_TIMEOUT;
1931 #if CP_VLAN_TAG_USED
1932 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1933 dev->vlan_rx_register = cp_vlan_rx_register;
1937 dev->features |= NETIF_F_HIGHDMA;
1939 #if 0 /* disabled by default until verified */
1940 dev->features |= NETIF_F_TSO;
1943 dev->irq = pdev->irq;
1945 rc = register_netdev(dev);
1949 printk (KERN_INFO "%s: RTL-8139C+ at 0x%lx, "
1950 "%02x:%02x:%02x:%02x:%02x:%02x, "
1954 dev->dev_addr[0], dev->dev_addr[1],
1955 dev->dev_addr[2], dev->dev_addr[3],
1956 dev->dev_addr[4], dev->dev_addr[5],
1959 pci_set_drvdata(pdev, dev);
1961 /* enable busmastering and memory-write-invalidate */
1962 pci_set_master(pdev);
1964 if (cp->wol_enabled)
1965 cp_set_d3_state (cp);
1972 pci_release_regions(pdev);
1974 pci_clear_mwi(pdev);
1976 pci_disable_device(pdev);
1982 static void cp_remove_one (struct pci_dev *pdev)
1984 struct net_device *dev = pci_get_drvdata(pdev);
1985 struct cp_private *cp = netdev_priv(dev);
1987 unregister_netdev(dev);
1989 if (cp->wol_enabled)
1990 pci_set_power_state (pdev, PCI_D0);
1991 pci_release_regions(pdev);
1992 pci_clear_mwi(pdev);
1993 pci_disable_device(pdev);
1994 pci_set_drvdata(pdev, NULL);
1999 static int cp_suspend (struct pci_dev *pdev, pm_message_t state)
2001 struct net_device *dev = pci_get_drvdata(pdev);
2002 struct cp_private *cp = netdev_priv(dev);
2003 unsigned long flags;
2005 if (!netif_running(dev))
2008 netif_device_detach (dev);
2009 netif_stop_queue (dev);
2011 spin_lock_irqsave (&cp->lock, flags);
2013 /* Disable Rx and Tx */
2014 cpw16 (IntrMask, 0);
2015 cpw8 (Cmd, cpr8 (Cmd) & (~RxOn | ~TxOn));
2017 spin_unlock_irqrestore (&cp->lock, flags);
2019 pci_save_state(pdev);
2020 pci_enable_wake(pdev, pci_choose_state(pdev, state), cp->wol_enabled);
2021 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2026 static int cp_resume (struct pci_dev *pdev)
2028 struct net_device *dev = pci_get_drvdata (pdev);
2029 struct cp_private *cp = netdev_priv(dev);
2030 unsigned long flags;
2032 if (!netif_running(dev))
2035 netif_device_attach (dev);
2037 pci_set_power_state(pdev, PCI_D0);
2038 pci_restore_state(pdev);
2039 pci_enable_wake(pdev, PCI_D0, 0);
2041 /* FIXME: sh*t may happen if the Rx ring buffer is depleted */
2042 cp_init_rings_index (cp);
2044 netif_start_queue (dev);
2046 spin_lock_irqsave (&cp->lock, flags);
2048 mii_check_media(&cp->mii_if, netif_msg_link(cp), false);
2050 spin_unlock_irqrestore (&cp->lock, flags);
2054 #endif /* CONFIG_PM */
2056 static struct pci_driver cp_driver = {
2058 .id_table = cp_pci_tbl,
2059 .probe = cp_init_one,
2060 .remove = cp_remove_one,
2062 .resume = cp_resume,
2063 .suspend = cp_suspend,
2067 static int __init cp_init (void)
2070 printk("%s", version);
2072 return pci_register_driver(&cp_driver);
2075 static void __exit cp_exit (void)
2077 pci_unregister_driver (&cp_driver);
2080 module_init(cp_init);
2081 module_exit(cp_exit);