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[net-next-2.6.git] / drivers / net / 8139cp.c
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1da177e4
LT		 1/* 8139cp.c: A Linux PCI Ethernet driver for the RealTek 8139C+ chips. */
2/*
3 Copyright 2001-2004 Jeff Garzik <jgarzik@pobox.com>
4
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]
11
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.
18
19 See the file COPYING in this distribution for more information.
20
21 Contributors:
22
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>
26
27 TODO:
28 * Test Tx checksumming thoroughly
29 * Implement dev->tx_timeout
30
31 Low priority TODO:
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
39 Tx descriptor bit
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)
43
44 NOTES:
45 * TX checksumming is considered experimental. It is off by
46 default, use ethtool to turn it on.
47
48 */
49
50#define DRV_NAME "8139cp"
51#define DRV_VERSION "1.2"
52#define DRV_RELDATE "Mar 22, 2004"
53
54
55#include <linux/config.h>
56#include <linux/module.h>
e21ba282 57#include <linux/moduleparam.h>
1da177e4
LT		 58#include <linux/kernel.h>
59#include <linux/compiler.h>
60#include <linux/netdevice.h>
61#include <linux/etherdevice.h>
62#include <linux/init.h>
63#include <linux/pci.h>
8662d061 64#include <linux/dma-mapping.h>
1da177e4
LT		 65#include <linux/delay.h>
66#include <linux/ethtool.h>
67#include <linux/mii.h>
68#include <linux/if_vlan.h>
69#include <linux/crc32.h>
70#include <linux/in.h>
71#include <linux/ip.h>
72#include <linux/tcp.h>
73#include <linux/udp.h>
74#include <linux/cache.h>
75#include <asm/io.h>
76#include <asm/irq.h>
77#include <asm/uaccess.h>
78
79/* VLAN tagging feature enable/disable */
80#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
81#define CP_VLAN_TAG_USED 1
82#define CP_VLAN_TX_TAG(tx_desc,vlan_tag_value) \
83 do { (tx_desc)->opts2 = (vlan_tag_value); } while (0)
84#else
85#define CP_VLAN_TAG_USED 0
86#define CP_VLAN_TX_TAG(tx_desc,vlan_tag_value) \
87 do { (tx_desc)->opts2 = 0; } while (0)
88#endif
89
90/* These identify the driver base version and may not be removed. */
91static char version[] =
92KERN_INFO DRV_NAME ": 10/100 PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")\n";
93
94MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
95MODULE_DESCRIPTION("RealTek RTL-8139C+ series 10/100 PCI Ethernet driver");
a78d8927 96MODULE_VERSION(DRV_VERSION);
1da177e4
LT		 97MODULE_LICENSE("GPL");
98
99static int debug = -1;
e21ba282 100module_param(debug, int, 0);
1da177e4
LT		 101MODULE_PARM_DESC (debug, "8139cp: bitmapped message enable number");
102
103/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
104 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
105static int multicast_filter_limit = 32;
e21ba282 106module_param(multicast_filter_limit, int, 0);
1da177e4
LT		 107MODULE_PARM_DESC (multicast_filter_limit, "8139cp: maximum number of filtered multicast addresses");
108
109#define PFX DRV_NAME ": "
110
111#ifndef TRUE
112#define FALSE 0
113#define TRUE (!FALSE)
114#endif
115
116#define CP_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
117 NETIF_MSG_PROBE | \
118 NETIF_MSG_LINK)
119#define CP_NUM_STATS 14 /* struct cp_dma_stats, plus one */
120#define CP_STATS_SIZE 64 /* size in bytes of DMA stats block */
121#define CP_REGS_SIZE (0xff + 1)
122#define CP_REGS_VER 1 /* version 1 */
123#define CP_RX_RING_SIZE 64
124#define CP_TX_RING_SIZE 64
125#define CP_RING_BYTES \
126 ((sizeof(struct cp_desc) * CP_RX_RING_SIZE) + \
127 (sizeof(struct cp_desc) * CP_TX_RING_SIZE) + \
128 CP_STATS_SIZE)
129#define NEXT_TX(N) (((N) + 1) & (CP_TX_RING_SIZE - 1))
130#define NEXT_RX(N) (((N) + 1) & (CP_RX_RING_SIZE - 1))
131#define TX_BUFFS_AVAIL(CP) \
132 (((CP)->tx_tail <= (CP)->tx_head) ? \
133 (CP)->tx_tail + (CP_TX_RING_SIZE - 1) - (CP)->tx_head : \
134 (CP)->tx_tail - (CP)->tx_head - 1)
135
136#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
137#define RX_OFFSET 2
138#define CP_INTERNAL_PHY 32
139
140/* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
141#define RX_FIFO_THRESH 5 /* Rx buffer level before first PCI xfer. */
142#define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 */
143#define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
144#define TX_EARLY_THRESH 256 /* Early Tx threshold, in bytes */
145
146/* Time in jiffies before concluding the transmitter is hung. */
147#define TX_TIMEOUT (6*HZ)
148
149/* hardware minimum and maximum for a single frame's data payload */
150#define CP_MIN_MTU 60 /* TODO: allow lower, but pad */
151#define CP_MAX_MTU 4096
152
153enum {
154 /* NIC register offsets */
155 MAC0 = 0x00, /* Ethernet hardware address. */
156 MAR0 = 0x08, /* Multicast filter. */
157 StatsAddr = 0x10, /* 64-bit start addr of 64-byte DMA stats blk */
158 TxRingAddr = 0x20, /* 64-bit start addr of Tx ring */
159 HiTxRingAddr = 0x28, /* 64-bit start addr of high priority Tx ring */
160 Cmd = 0x37, /* Command register */
161 IntrMask = 0x3C, /* Interrupt mask */
162 IntrStatus = 0x3E, /* Interrupt status */
163 TxConfig = 0x40, /* Tx configuration */
164 ChipVersion = 0x43, /* 8-bit chip version, inside TxConfig */
165 RxConfig = 0x44, /* Rx configuration */
166 RxMissed = 0x4C, /* 24 bits valid, write clears */
167 Cfg9346 = 0x50, /* EEPROM select/control; Cfg reg [un]lock */
168 Config1 = 0x52, /* Config1 */
169 Config3 = 0x59, /* Config3 */
170 Config4 = 0x5A, /* Config4 */
171 MultiIntr = 0x5C, /* Multiple interrupt select */
172 BasicModeCtrl = 0x62, /* MII BMCR */
173 BasicModeStatus = 0x64, /* MII BMSR */
174 NWayAdvert = 0x66, /* MII ADVERTISE */
175 NWayLPAR = 0x68, /* MII LPA */
176 NWayExpansion = 0x6A, /* MII Expansion */
177 Config5 = 0xD8, /* Config5 */
178 TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
179 RxMaxSize = 0xDA, /* Max size of an Rx packet (8169 only) */
180 CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
181 IntrMitigate = 0xE2, /* rx/tx interrupt mitigation control */
182 RxRingAddr = 0xE4, /* 64-bit start addr of Rx ring */
183 TxThresh = 0xEC, /* Early Tx threshold */
184 OldRxBufAddr = 0x30, /* DMA address of Rx ring buffer (C mode) */
185 OldTSD0 = 0x10, /* DMA address of first Tx desc (C mode) */
186
187 /* Tx and Rx status descriptors */
188 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
189 RingEnd = (1 << 30), /* End of descriptor ring */
190 FirstFrag = (1 << 29), /* First segment of a packet */
191 LastFrag = (1 << 28), /* Final segment of a packet */
fcec3456
JG		 192 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
193 MSSShift = 16, /* MSS value position */
194 MSSMask = 0xfff, /* MSS value: 11 bits */
1da177e4
LT		 195 TxError = (1 << 23), /* Tx error summary */
196 RxError = (1 << 20), /* Rx error summary */
197 IPCS = (1 << 18), /* Calculate IP checksum */
198 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
199 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
200 TxVlanTag = (1 << 17), /* Add VLAN tag */
201 RxVlanTagged = (1 << 16), /* Rx VLAN tag available */
202 IPFail = (1 << 15), /* IP checksum failed */
203 UDPFail = (1 << 14), /* UDP/IP checksum failed */
204 TCPFail = (1 << 13), /* TCP/IP checksum failed */
205 NormalTxPoll = (1 << 6), /* One or more normal Tx packets to send */
206 PID1 = (1 << 17), /* 2 protocol id bits: 0==non-IP, */
207 PID0 = (1 << 16), /* 1==UDP/IP, 2==TCP/IP, 3==IP */
208 RxProtoTCP = 1,
209 RxProtoUDP = 2,
210 RxProtoIP = 3,
211 TxFIFOUnder = (1 << 25), /* Tx FIFO underrun */
212 TxOWC = (1 << 22), /* Tx Out-of-window collision */
213 TxLinkFail = (1 << 21), /* Link failed during Tx of packet */
214 TxMaxCol = (1 << 20), /* Tx aborted due to excessive collisions */
215 TxColCntShift = 16, /* Shift, to get 4-bit Tx collision cnt */
216 TxColCntMask = 0x01 | 0x02 | 0x04 | 0x08, /* 4-bit collision count */
217 RxErrFrame = (1 << 27), /* Rx frame alignment error */
218 RxMcast = (1 << 26), /* Rx multicast packet rcv'd */
219 RxErrCRC = (1 << 18), /* Rx CRC error */
220 RxErrRunt = (1 << 19), /* Rx error, packet < 64 bytes */
221 RxErrLong = (1 << 21), /* Rx error, packet > 4096 bytes */
222 RxErrFIFO = (1 << 22), /* Rx error, FIFO overflowed, pkt bad */
223
224 /* StatsAddr register */
225 DumpStats = (1 << 3), /* Begin stats dump */
226
227 /* RxConfig register */
228 RxCfgFIFOShift = 13, /* Shift, to get Rx FIFO thresh value */
229 RxCfgDMAShift = 8, /* Shift, to get Rx Max DMA value */
230 AcceptErr = 0x20, /* Accept packets with CRC errors */
231 AcceptRunt = 0x10, /* Accept runt (<64 bytes) packets */
232 AcceptBroadcast = 0x08, /* Accept broadcast packets */
233 AcceptMulticast = 0x04, /* Accept multicast packets */
234 AcceptMyPhys = 0x02, /* Accept pkts with our MAC as dest */
235 AcceptAllPhys = 0x01, /* Accept all pkts w/ physical dest */
236
237 /* IntrMask / IntrStatus registers */
238 PciErr = (1 << 15), /* System error on the PCI bus */
239 TimerIntr = (1 << 14), /* Asserted when TCTR reaches TimerInt value */
240 LenChg = (1 << 13), /* Cable length change */
241 SWInt = (1 << 8), /* Software-requested interrupt */
242 TxEmpty = (1 << 7), /* No Tx descriptors available */
243 RxFIFOOvr = (1 << 6), /* Rx FIFO Overflow */
244 LinkChg = (1 << 5), /* Packet underrun, or link change */
245 RxEmpty = (1 << 4), /* No Rx descriptors available */
246 TxErr = (1 << 3), /* Tx error */
247 TxOK = (1 << 2), /* Tx packet sent */
248 RxErr = (1 << 1), /* Rx error */
249 RxOK = (1 << 0), /* Rx packet received */
250 IntrResvd = (1 << 10), /* reserved, according to RealTek engineers,
251 but hardware likes to raise it */
252
253 IntrAll = PciErr | TimerIntr | LenChg | SWInt | TxEmpty |
254 RxFIFOOvr | LinkChg | RxEmpty | TxErr | TxOK |
255 RxErr | RxOK | IntrResvd,
256
257 /* C mode command register */
258 CmdReset = (1 << 4), /* Enable to reset; self-clearing */
259 RxOn = (1 << 3), /* Rx mode enable */
260 TxOn = (1 << 2), /* Tx mode enable */
261
262 /* C+ mode command register */
263 RxVlanOn = (1 << 6), /* Rx VLAN de-tagging enable */
264 RxChkSum = (1 << 5), /* Rx checksum offload enable */
265 PCIDAC = (1 << 4), /* PCI Dual Address Cycle (64-bit PCI) */
266 PCIMulRW = (1 << 3), /* Enable PCI read/write multiple */
267 CpRxOn = (1 << 1), /* Rx mode enable */
268 CpTxOn = (1 << 0), /* Tx mode enable */
269
270 /* Cfg9436 EEPROM control register */
271 Cfg9346_Lock = 0x00, /* Lock ConfigX/MII register access */
272 Cfg9346_Unlock = 0xC0, /* Unlock ConfigX/MII register access */
273
274 /* TxConfig register */
275 IFG = (1 << 25) | (1 << 24), /* standard IEEE interframe gap */
276 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
277
278 /* Early Tx Threshold register */
279 TxThreshMask = 0x3f, /* Mask bits 5-0 */
280 TxThreshMax = 2048, /* Max early Tx threshold */
281
282 /* Config1 register */
283 DriverLoaded = (1 << 5), /* Software marker, driver is loaded */
284 LWACT = (1 << 4), /* LWAKE active mode */
285 PMEnable = (1 << 0), /* Enable various PM features of chip */
286
287 /* Config3 register */
288 PARMEnable = (1 << 6), /* Enable auto-loading of PHY parms */
289 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
290 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
291
292 /* Config4 register */
293 LWPTN = (1 << 1), /* LWAKE Pattern */
294 LWPME = (1 << 4), /* LANWAKE vs PMEB */
295
296 /* Config5 register */
297 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
298 MWF = (1 << 5), /* Accept Multicast wakeup frame */
299 UWF = (1 << 4), /* Accept Unicast wakeup frame */
300 LANWake = (1 << 1), /* Enable LANWake signal */
301 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
302
303 cp_norx_intr_mask = PciErr | LinkChg | TxOK | TxErr | TxEmpty,
304 cp_rx_intr_mask = RxOK | RxErr | RxEmpty | RxFIFOOvr,
305 cp_intr_mask = cp_rx_intr_mask | cp_norx_intr_mask,
306};
307
308static const unsigned int cp_rx_config =
309 (RX_FIFO_THRESH << RxCfgFIFOShift) |
310 (RX_DMA_BURST << RxCfgDMAShift);
311
312struct cp_desc {
313 u32 opts1;
314 u32 opts2;
315 u64 addr;
316};
317
318struct ring_info {
319 struct sk_buff *skb;
320 dma_addr_t mapping;
5734418d 321 u32 len;
1da177e4
LT		 322};
323
324struct cp_dma_stats {
325 u64 tx_ok;
326 u64 rx_ok;
327 u64 tx_err;
328 u32 rx_err;
329 u16 rx_fifo;
330 u16 frame_align;
331 u32 tx_ok_1col;
332 u32 tx_ok_mcol;
333 u64 rx_ok_phys;
334 u64 rx_ok_bcast;
335 u32 rx_ok_mcast;
336 u16 tx_abort;
337 u16 tx_underrun;
338} __attribute__((packed));
339
340struct cp_extra_stats {
341 unsigned long rx_frags;
342};
343
344struct cp_private {
345 void __iomem *regs;
346 struct net_device *dev;
347 spinlock_t lock;
348 u32 msg_enable;
349
350 struct pci_dev *pdev;
351 u32 rx_config;
352 u16 cpcmd;
353
354 struct net_device_stats net_stats;
355 struct cp_extra_stats cp_stats;
356 struct cp_dma_stats *nic_stats;
357 dma_addr_t nic_stats_dma;
358
359 unsigned rx_tail ____cacheline_aligned;
360 struct cp_desc *rx_ring;
361 struct ring_info rx_skb[CP_RX_RING_SIZE];
362 unsigned rx_buf_sz;
363
364 unsigned tx_head ____cacheline_aligned;
365 unsigned tx_tail;
366
367 struct cp_desc *tx_ring;
368 struct ring_info tx_skb[CP_TX_RING_SIZE];
369 dma_addr_t ring_dma;
370
371#if CP_VLAN_TAG_USED
372 struct vlan_group *vlgrp;
373#endif
374
375 unsigned int wol_enabled : 1; /* Is Wake-on-LAN enabled? */
376
377 struct mii_if_info mii_if;
378};
379
380#define cpr8(reg) readb(cp->regs + (reg))
381#define cpr16(reg) readw(cp->regs + (reg))
382#define cpr32(reg) readl(cp->regs + (reg))
383#define cpw8(reg,val) writeb((val), cp->regs + (reg))
384#define cpw16(reg,val) writew((val), cp->regs + (reg))
385#define cpw32(reg,val) writel((val), cp->regs + (reg))
386#define cpw8_f(reg,val) do { \
387 writeb((val), cp->regs + (reg)); \
388 readb(cp->regs + (reg)); \
389 } while (0)
390#define cpw16_f(reg,val) do { \
391 writew((val), cp->regs + (reg)); \
392 readw(cp->regs + (reg)); \
393 } while (0)
394#define cpw32_f(reg,val) do { \
395 writel((val), cp->regs + (reg)); \
396 readl(cp->regs + (reg)); \
397 } while (0)
398
399
400static void __cp_set_rx_mode (struct net_device *dev);
401static void cp_tx (struct cp_private *cp);
402static void cp_clean_rings (struct cp_private *cp);
7502cd10
SK		 403#ifdef CONFIG_NET_POLL_CONTROLLER
404static void cp_poll_controller(struct net_device *dev);
405#endif
1da177e4
LT		 406
407static struct pci_device_id cp_pci_tbl[] = {
408 { PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139,
409 PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
410 { PCI_VENDOR_ID_TTTECH, PCI_DEVICE_ID_TTTECH_MC322,
411 PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
412 { },
413};
414MODULE_DEVICE_TABLE(pci, cp_pci_tbl);
415
416static struct {
417 const char str[ETH_GSTRING_LEN];
418} ethtool_stats_keys[] = {
419 { "tx_ok" },
420 { "rx_ok" },
421 { "tx_err" },
422 { "rx_err" },
423 { "rx_fifo" },
424 { "frame_align" },
425 { "tx_ok_1col" },
426 { "tx_ok_mcol" },
427 { "rx_ok_phys" },
428 { "rx_ok_bcast" },
429 { "rx_ok_mcast" },
430 { "tx_abort" },
431 { "tx_underrun" },
432 { "rx_frags" },
433};
434
435
436#if CP_VLAN_TAG_USED
437static void cp_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
438{
439 struct cp_private *cp = netdev_priv(dev);
440 unsigned long flags;
441
442 spin_lock_irqsave(&cp->lock, flags);
443 cp->vlgrp = grp;
444 cp->cpcmd |= RxVlanOn;
445 cpw16(CpCmd, cp->cpcmd);
446 spin_unlock_irqrestore(&cp->lock, flags);
447}
448
449static void cp_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
450{
451 struct cp_private *cp = netdev_priv(dev);
452 unsigned long flags;
453
454 spin_lock_irqsave(&cp->lock, flags);
455 cp->cpcmd &= ~RxVlanOn;
456 cpw16(CpCmd, cp->cpcmd);
457 if (cp->vlgrp)
458 cp->vlgrp->vlan_devices[vid] = NULL;
459 spin_unlock_irqrestore(&cp->lock, flags);
460}
461#endif /* CP_VLAN_TAG_USED */
462
463static inline void cp_set_rxbufsize (struct cp_private *cp)
464{
465 unsigned int mtu = cp->dev->mtu;
466
467 if (mtu > ETH_DATA_LEN)
468 /* MTU + ethernet header + FCS + optional VLAN tag */
469 cp->rx_buf_sz = mtu + ETH_HLEN + 8;
470 else
471 cp->rx_buf_sz = PKT_BUF_SZ;
472}
473
474static inline void cp_rx_skb (struct cp_private *cp, struct sk_buff *skb,
475 struct cp_desc *desc)
476{
477 skb->protocol = eth_type_trans (skb, cp->dev);
478
479 cp->net_stats.rx_packets++;
480 cp->net_stats.rx_bytes += skb->len;
481 cp->dev->last_rx = jiffies;
482
483#if CP_VLAN_TAG_USED
484 if (cp->vlgrp && (desc->opts2 & RxVlanTagged)) {
485 vlan_hwaccel_receive_skb(skb, cp->vlgrp,
486 be16_to_cpu(desc->opts2 & 0xffff));
487 } else
488#endif
489 netif_receive_skb(skb);
490}
491
492static void cp_rx_err_acct (struct cp_private *cp, unsigned rx_tail,
493 u32 status, u32 len)
494{
495 if (netif_msg_rx_err (cp))
496 printk (KERN_DEBUG
497 "%s: rx err, slot %d status 0x%x len %d\n",
498 cp->dev->name, rx_tail, status, len);
499 cp->net_stats.rx_errors++;
500 if (status & RxErrFrame)
501 cp->net_stats.rx_frame_errors++;
502 if (status & RxErrCRC)
503 cp->net_stats.rx_crc_errors++;
504 if ((status & RxErrRunt) || (status & RxErrLong))
505 cp->net_stats.rx_length_errors++;
506 if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag))
507 cp->net_stats.rx_length_errors++;
508 if (status & RxErrFIFO)
509 cp->net_stats.rx_fifo_errors++;
510}
511
512static inline unsigned int cp_rx_csum_ok (u32 status)
513{
514 unsigned int protocol = (status >> 16) & 0x3;
515
516 if (likely((protocol == RxProtoTCP) && (!(status & TCPFail))))
517 return 1;
518 else if ((protocol == RxProtoUDP) && (!(status & UDPFail)))
519 return 1;
520 else if ((protocol == RxProtoIP) && (!(status & IPFail)))
521 return 1;
522 return 0;
523}
524
525static int cp_rx_poll (struct net_device *dev, int *budget)
526{
527 struct cp_private *cp = netdev_priv(dev);
528 unsigned rx_tail = cp->rx_tail;
529 unsigned rx_work = dev->quota;
530 unsigned rx;
531
532rx_status_loop:
533 rx = 0;
534 cpw16(IntrStatus, cp_rx_intr_mask);
535
536 while (1) {
537 u32 status, len;
538 dma_addr_t mapping;
539 struct sk_buff *skb, *new_skb;
540 struct cp_desc *desc;
541 unsigned buflen;
542
543 skb = cp->rx_skb[rx_tail].skb;
544 if (!skb)
545 BUG();
546
547 desc = &cp->rx_ring[rx_tail];
548 status = le32_to_cpu(desc->opts1);
549 if (status & DescOwn)
550 break;
551
552 len = (status & 0x1fff) - 4;
553 mapping = cp->rx_skb[rx_tail].mapping;
554
555 if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag)) {
556 /* we don't support incoming fragmented frames.
557 * instead, we attempt to ensure that the
558 * pre-allocated RX skbs are properly sized such
559 * that RX fragments are never encountered
560 */
561 cp_rx_err_acct(cp, rx_tail, status, len);
562 cp->net_stats.rx_dropped++;
563 cp->cp_stats.rx_frags++;
564 goto rx_next;
565 }
566
567 if (status & (RxError | RxErrFIFO)) {
568 cp_rx_err_acct(cp, rx_tail, status, len);
569 goto rx_next;
570 }
571
572 if (netif_msg_rx_status(cp))
573 printk(KERN_DEBUG "%s: rx slot %d status 0x%x len %d\n",
574 cp->dev->name, rx_tail, status, len);
575
576 buflen = cp->rx_buf_sz + RX_OFFSET;
577 new_skb = dev_alloc_skb (buflen);
578 if (!new_skb) {
579 cp->net_stats.rx_dropped++;
580 goto rx_next;
581 }
582
583 skb_reserve(new_skb, RX_OFFSET);
584 new_skb->dev = cp->dev;
585
586 pci_unmap_single(cp->pdev, mapping,
587 buflen, PCI_DMA_FROMDEVICE);
588
589 /* Handle checksum offloading for incoming packets. */
590 if (cp_rx_csum_ok(status))
591 skb->ip_summed = CHECKSUM_UNNECESSARY;
592 else
593 skb->ip_summed = CHECKSUM_NONE;
594
595 skb_put(skb, len);
596
597 mapping =
598 cp->rx_skb[rx_tail].mapping =
689be439 599 pci_map_single(cp->pdev, new_skb->data,
1da177e4
LT		 600 buflen, PCI_DMA_FROMDEVICE);
601 cp->rx_skb[rx_tail].skb = new_skb;
602
603 cp_rx_skb(cp, skb, desc);
604 rx++;
605
606rx_next:
607 cp->rx_ring[rx_tail].opts2 = 0;
608 cp->rx_ring[rx_tail].addr = cpu_to_le64(mapping);
609 if (rx_tail == (CP_RX_RING_SIZE - 1))
610 desc->opts1 = cpu_to_le32(DescOwn | RingEnd |
611 cp->rx_buf_sz);
612 else
613 desc->opts1 = cpu_to_le32(DescOwn | cp->rx_buf_sz);
614 rx_tail = NEXT_RX(rx_tail);
615
616 if (!rx_work--)
617 break;
618 }
619
620 cp->rx_tail = rx_tail;
621
622 dev->quota -= rx;
623 *budget -= rx;
624
625 /* if we did not reach work limit, then we're done with
626 * this round of polling
627 */
628 if (rx_work) {
629 if (cpr16(IntrStatus) & cp_rx_intr_mask)
630 goto rx_status_loop;
631
632 local_irq_disable();
633 cpw16_f(IntrMask, cp_intr_mask);
634 __netif_rx_complete(dev);
635 local_irq_enable();
636
637 return 0; /* done */
638 }
639
640 return 1; /* not done */
641}
642
643static irqreturn_t
644cp_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
645{
646 struct net_device *dev = dev_instance;
647 struct cp_private *cp;
648 u16 status;
649
650 if (unlikely(dev == NULL))
651 return IRQ_NONE;
652 cp = netdev_priv(dev);
653
654 status = cpr16(IntrStatus);
655 if (!status || (status == 0xFFFF))
656 return IRQ_NONE;
657
658 if (netif_msg_intr(cp))
659 printk(KERN_DEBUG "%s: intr, status %04x cmd %02x cpcmd %04x\n",
660 dev->name, status, cpr8(Cmd), cpr16(CpCmd));
661
662 cpw16(IntrStatus, status & ~cp_rx_intr_mask);
663
664 spin_lock(&cp->lock);
665
666 /* close possible race's with dev_close */
667 if (unlikely(!netif_running(dev))) {
668 cpw16(IntrMask, 0);
669 spin_unlock(&cp->lock);
670 return IRQ_HANDLED;
671 }
672
673 if (status & (RxOK | RxErr | RxEmpty | RxFIFOOvr))
674 if (netif_rx_schedule_prep(dev)) {
675 cpw16_f(IntrMask, cp_norx_intr_mask);
676 __netif_rx_schedule(dev);
677 }
678
679 if (status & (TxOK | TxErr | TxEmpty | SWInt))
680 cp_tx(cp);
681 if (status & LinkChg)
682 mii_check_media(&cp->mii_if, netif_msg_link(cp), FALSE);
683
684 spin_unlock(&cp->lock);
685
686 if (status & PciErr) {
687 u16 pci_status;
688
689 pci_read_config_word(cp->pdev, PCI_STATUS, &pci_status);
690 pci_write_config_word(cp->pdev, PCI_STATUS, pci_status);
691 printk(KERN_ERR "%s: PCI bus error, status=%04x, PCI status=%04x\n",
692 dev->name, status, pci_status);
693
694 /* TODO: reset hardware */
695 }
696
697 return IRQ_HANDLED;
698}
699
7502cd10
SK		 700#ifdef CONFIG_NET_POLL_CONTROLLER
701/*
702 * Polling receive - used by netconsole and other diagnostic tools
703 * to allow network i/o with interrupts disabled.
704 */
705static void cp_poll_controller(struct net_device *dev)
706{
707 disable_irq(dev->irq);
708 cp_interrupt(dev->irq, dev, NULL);
709 enable_irq(dev->irq);
710}
711#endif
712
1da177e4
LT		 713static void cp_tx (struct cp_private *cp)
714{
715 unsigned tx_head = cp->tx_head;
716 unsigned tx_tail = cp->tx_tail;
717
718 while (tx_tail != tx_head) {
719 struct sk_buff *skb;
720 u32 status;
721
722 rmb();
723 status = le32_to_cpu(cp->tx_ring[tx_tail].opts1);
724 if (status & DescOwn)
725 break;
726
727 skb = cp->tx_skb[tx_tail].skb;
728 if (!skb)
729 BUG();
730
731 pci_unmap_single(cp->pdev, cp->tx_skb[tx_tail].mapping,
5734418d 732 cp->tx_skb[tx_tail].len, PCI_DMA_TODEVICE);
1da177e4
LT		 733
734 if (status & LastFrag) {
735 if (status & (TxError | TxFIFOUnder)) {
736 if (netif_msg_tx_err(cp))
737 printk(KERN_DEBUG "%s: tx err, status 0x%x\n",
738 cp->dev->name, status);
739 cp->net_stats.tx_errors++;
740 if (status & TxOWC)
741 cp->net_stats.tx_window_errors++;
742 if (status & TxMaxCol)
743 cp->net_stats.tx_aborted_errors++;
744 if (status & TxLinkFail)
745 cp->net_stats.tx_carrier_errors++;
746 if (status & TxFIFOUnder)
747 cp->net_stats.tx_fifo_errors++;
748 } else {
749 cp->net_stats.collisions +=
750 ((status >> TxColCntShift) & TxColCntMask);
751 cp->net_stats.tx_packets++;
752 cp->net_stats.tx_bytes += skb->len;
753 if (netif_msg_tx_done(cp))
754 printk(KERN_DEBUG "%s: tx done, slot %d\n", cp->dev->name, tx_tail);
755 }
756 dev_kfree_skb_irq(skb);
757 }
758
759 cp->tx_skb[tx_tail].skb = NULL;
760
761 tx_tail = NEXT_TX(tx_tail);
762 }
763
764 cp->tx_tail = tx_tail;
765
766 if (TX_BUFFS_AVAIL(cp) > (MAX_SKB_FRAGS + 1))
767 netif_wake_queue(cp->dev);
768}
769
770static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
771{
772 struct cp_private *cp = netdev_priv(dev);
773 unsigned entry;
fcec3456 774 u32 eor, flags;
1da177e4
LT		 775#if CP_VLAN_TAG_USED
776 u32 vlan_tag = 0;
777#endif
fcec3456 778 int mss = 0;
1da177e4
LT		 779
780 spin_lock_irq(&cp->lock);
781
782 /* This is a hard error, log it. */
783 if (TX_BUFFS_AVAIL(cp) <= (skb_shinfo(skb)->nr_frags + 1)) {
784 netif_stop_queue(dev);
785 spin_unlock_irq(&cp->lock);
786 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
787 dev->name);
788 return 1;
789 }
790
791#if CP_VLAN_TAG_USED
792 if (cp->vlgrp && vlan_tx_tag_present(skb))
793 vlan_tag = TxVlanTag | cpu_to_be16(vlan_tx_tag_get(skb));
794#endif
795
796 entry = cp->tx_head;
797 eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
fcec3456
JG		 798 if (dev->features & NETIF_F_TSO)
799 mss = skb_shinfo(skb)->tso_size;
800
1da177e4
LT		 801 if (skb_shinfo(skb)->nr_frags == 0) {
802 struct cp_desc *txd = &cp->tx_ring[entry];
803 u32 len;
804 dma_addr_t mapping;
805
806 len = skb->len;
807 mapping = pci_map_single(cp->pdev, skb->data, len, PCI_DMA_TODEVICE);
808 CP_VLAN_TX_TAG(txd, vlan_tag);
809 txd->addr = cpu_to_le64(mapping);
810 wmb();
811
fcec3456
JG		 812 flags = eor | len | DescOwn | FirstFrag | LastFrag;
813
814 if (mss)
815 flags |= LargeSend | ((mss & MSSMask) << MSSShift);
816 else if (skb->ip_summed == CHECKSUM_HW) {
1da177e4
LT		 817 const struct iphdr *ip = skb->nh.iph;
818 if (ip->protocol == IPPROTO_TCP)
fcec3456 819 flags |= IPCS | TCPCS;
1da177e4 820 else if (ip->protocol == IPPROTO_UDP)
fcec3456 821 flags |= IPCS | UDPCS;
1da177e4 822 else
5734418d 823 WARN_ON(1); /* we need a WARN() */
fcec3456
JG		 824 }
825
826 txd->opts1 = cpu_to_le32(flags);
1da177e4
LT		 827 wmb();
828
829 cp->tx_skb[entry].skb = skb;
830 cp->tx_skb[entry].mapping = mapping;
5734418d 831 cp->tx_skb[entry].len = len;
1da177e4
LT		 832 entry = NEXT_TX(entry);
833 } else {
834 struct cp_desc *txd;
835 u32 first_len, first_eor;
836 dma_addr_t first_mapping;
837 int frag, first_entry = entry;
838 const struct iphdr *ip = skb->nh.iph;
839
840 /* We must give this initial chunk to the device last.
841 * Otherwise we could race with the device.
842 */
843 first_eor = eor;
844 first_len = skb_headlen(skb);
845 first_mapping = pci_map_single(cp->pdev, skb->data,
846 first_len, PCI_DMA_TODEVICE);
847 cp->tx_skb[entry].skb = skb;
848 cp->tx_skb[entry].mapping = first_mapping;
5734418d 849 cp->tx_skb[entry].len = first_len;
1da177e4
LT		 850 entry = NEXT_TX(entry);
851
852 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
853 skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
854 u32 len;
855 u32 ctrl;
856 dma_addr_t mapping;
857
858 len = this_frag->size;
859 mapping = pci_map_single(cp->pdev,
860 ((void *) page_address(this_frag->page) +
861 this_frag->page_offset),
862 len, PCI_DMA_TODEVICE);
863 eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
864
fcec3456
JG		 865 ctrl = eor | len | DescOwn;
866
867 if (mss)
868 ctrl |= LargeSend |
869 ((mss & MSSMask) << MSSShift);
870 else if (skb->ip_summed == CHECKSUM_HW) {
1da177e4 871 if (ip->protocol == IPPROTO_TCP)
fcec3456 872 ctrl |= IPCS | TCPCS;
1da177e4 873 else if (ip->protocol == IPPROTO_UDP)
fcec3456 874 ctrl |= IPCS | UDPCS;
1da177e4
LT		 875 else
876 BUG();
fcec3456 877 }
1da177e4
LT		 878
879 if (frag == skb_shinfo(skb)->nr_frags - 1)
880 ctrl |= LastFrag;
881
882 txd = &cp->tx_ring[entry];
883 CP_VLAN_TX_TAG(txd, vlan_tag);
884 txd->addr = cpu_to_le64(mapping);
885 wmb();
886
887 txd->opts1 = cpu_to_le32(ctrl);
888 wmb();
889
890 cp->tx_skb[entry].skb = skb;
891 cp->tx_skb[entry].mapping = mapping;
5734418d 892 cp->tx_skb[entry].len = len;
1da177e4
LT		 893 entry = NEXT_TX(entry);
894 }
895
896 txd = &cp->tx_ring[first_entry];
897 CP_VLAN_TX_TAG(txd, vlan_tag);
898 txd->addr = cpu_to_le64(first_mapping);
899 wmb();
900
901 if (skb->ip_summed == CHECKSUM_HW) {
902 if (ip->protocol == IPPROTO_TCP)
903 txd->opts1 = cpu_to_le32(first_eor | first_len |
904 FirstFrag | DescOwn |
905 IPCS | TCPCS);
906 else if (ip->protocol == IPPROTO_UDP)
907 txd->opts1 = cpu_to_le32(first_eor | first_len |
908 FirstFrag | DescOwn |
909 IPCS | UDPCS);
910 else
911 BUG();
912 } else
913 txd->opts1 = cpu_to_le32(first_eor | first_len |
914 FirstFrag | DescOwn);
915 wmb();
916 }
917 cp->tx_head = entry;
918 if (netif_msg_tx_queued(cp))
919 printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
920 dev->name, entry, skb->len);
921 if (TX_BUFFS_AVAIL(cp) <= (MAX_SKB_FRAGS + 1))
922 netif_stop_queue(dev);
923
924 spin_unlock_irq(&cp->lock);
925
926 cpw8(TxPoll, NormalTxPoll);
927 dev->trans_start = jiffies;
928
929 return 0;
930}
931
932/* Set or clear the multicast filter for this adaptor.
933 This routine is not state sensitive and need not be SMP locked. */
934
935static void __cp_set_rx_mode (struct net_device *dev)
936{
937 struct cp_private *cp = netdev_priv(dev);
938 u32 mc_filter[2]; /* Multicast hash filter */
939 int i, rx_mode;
940 u32 tmp;
941
942 /* Note: do not reorder, GCC is clever about common statements. */
943 if (dev->flags & IFF_PROMISC) {
944 /* Unconditionally log net taps. */
945 printk (KERN_NOTICE "%s: Promiscuous mode enabled.\n",
946 dev->name);
947 rx_mode =
948 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
949 AcceptAllPhys;
950 mc_filter[1] = mc_filter[0] = 0xffffffff;
951 } else if ((dev->mc_count > multicast_filter_limit)
952 || (dev->flags & IFF_ALLMULTI)) {
953 /* Too many to filter perfectly -- accept all multicasts. */
954 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
955 mc_filter[1] = mc_filter[0] = 0xffffffff;
956 } else {
957 struct dev_mc_list *mclist;
958 rx_mode = AcceptBroadcast | AcceptMyPhys;
959 mc_filter[1] = mc_filter[0] = 0;
960 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
961 i++, mclist = mclist->next) {
962 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
963
964 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
965 rx_mode |= AcceptMulticast;
966 }
967 }
968
969 /* We can safely update without stopping the chip. */
970 tmp = cp_rx_config | rx_mode;
971 if (cp->rx_config != tmp) {
972 cpw32_f (RxConfig, tmp);
973 cp->rx_config = tmp;
974 }
975 cpw32_f (MAR0 + 0, mc_filter[0]);
976 cpw32_f (MAR0 + 4, mc_filter[1]);
977}
978
979static void cp_set_rx_mode (struct net_device *dev)
980{
981 unsigned long flags;
982 struct cp_private *cp = netdev_priv(dev);
983
984 spin_lock_irqsave (&cp->lock, flags);
985 __cp_set_rx_mode(dev);
986 spin_unlock_irqrestore (&cp->lock, flags);
987}
988
989static void __cp_get_stats(struct cp_private *cp)
990{
991 /* only lower 24 bits valid; write any value to clear */
992 cp->net_stats.rx_missed_errors += (cpr32 (RxMissed) & 0xffffff);
993 cpw32 (RxMissed, 0);
994}
995
996static struct net_device_stats *cp_get_stats(struct net_device *dev)
997{
998 struct cp_private *cp = netdev_priv(dev);
999 unsigned long flags;
1000
1001 /* The chip only need report frame silently dropped. */
1002 spin_lock_irqsave(&cp->lock, flags);
1003 if (netif_running(dev) && netif_device_present(dev))
1004 __cp_get_stats(cp);
1005 spin_unlock_irqrestore(&cp->lock, flags);
1006
1007 return &cp->net_stats;
1008}
1009
1010static void cp_stop_hw (struct cp_private *cp)
1011{
1012 cpw16(IntrStatus, ~(cpr16(IntrStatus)));
1013 cpw16_f(IntrMask, 0);
1014 cpw8(Cmd, 0);
1015 cpw16_f(CpCmd, 0);
1016 cpw16_f(IntrStatus, ~(cpr16(IntrStatus)));
1017
1018 cp->rx_tail = 0;
1019 cp->tx_head = cp->tx_tail = 0;
1020}
1021
1022static void cp_reset_hw (struct cp_private *cp)
1023{
1024 unsigned work = 1000;
1025
1026 cpw8(Cmd, CmdReset);
1027
1028 while (work--) {
1029 if (!(cpr8(Cmd) & CmdReset))
1030 return;
1031
1032 set_current_state(TASK_UNINTERRUPTIBLE);
1033 schedule_timeout(10);
1034 }
1035
1036 printk(KERN_ERR "%s: hardware reset timeout\n", cp->dev->name);
1037}
1038
1039static inline void cp_start_hw (struct cp_private *cp)
1040{
1041 cpw16(CpCmd, cp->cpcmd);
1042 cpw8(Cmd, RxOn | TxOn);
1043}
1044
1045static void cp_init_hw (struct cp_private *cp)
1046{
1047 struct net_device *dev = cp->dev;
1048 dma_addr_t ring_dma;
1049
1050 cp_reset_hw(cp);
1051
1052 cpw8_f (Cfg9346, Cfg9346_Unlock);
1053
1054 /* Restore our idea of the MAC address. */
1055 cpw32_f (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1056 cpw32_f (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1057
1058 cp_start_hw(cp);
1059 cpw8(TxThresh, 0x06); /* XXX convert magic num to a constant */
1060
1061 __cp_set_rx_mode(dev);
1062 cpw32_f (TxConfig, IFG | (TX_DMA_BURST << TxDMAShift));
1063
1064 cpw8(Config1, cpr8(Config1) | DriverLoaded | PMEnable);
1065 /* Disable Wake-on-LAN. Can be turned on with ETHTOOL_SWOL */
1066 cpw8(Config3, PARMEnable);
1067 cp->wol_enabled = 0;
1068
1069 cpw8(Config5, cpr8(Config5) & PMEStatus);
1070
1071 cpw32_f(HiTxRingAddr, 0);
1072 cpw32_f(HiTxRingAddr + 4, 0);
1073
1074 ring_dma = cp->ring_dma;
1075 cpw32_f(RxRingAddr, ring_dma & 0xffffffff);
1076 cpw32_f(RxRingAddr + 4, (ring_dma >> 16) >> 16);
1077
1078 ring_dma += sizeof(struct cp_desc) * CP_RX_RING_SIZE;
1079 cpw32_f(TxRingAddr, ring_dma & 0xffffffff);
1080 cpw32_f(TxRingAddr + 4, (ring_dma >> 16) >> 16);
1081
1082 cpw16(MultiIntr, 0);
1083
1084 cpw16_f(IntrMask, cp_intr_mask);
1085
1086 cpw8_f(Cfg9346, Cfg9346_Lock);
1087}
1088
1089static int cp_refill_rx (struct cp_private *cp)
1090{
1091 unsigned i;
1092
1093 for (i = 0; i < CP_RX_RING_SIZE; i++) {
1094 struct sk_buff *skb;
1095
1096 skb = dev_alloc_skb(cp->rx_buf_sz + RX_OFFSET);
1097 if (!skb)
1098 goto err_out;
1099
1100 skb->dev = cp->dev;
1101 skb_reserve(skb, RX_OFFSET);
1102
1103 cp->rx_skb[i].mapping = pci_map_single(cp->pdev,
689be439 1104 skb->data, cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
1da177e4 1105 cp->rx_skb[i].skb = skb;
1da177e4
LT		 1106
1107 cp->rx_ring[i].opts2 = 0;
1108 cp->rx_ring[i].addr = cpu_to_le64(cp->rx_skb[i].mapping);
1109 if (i == (CP_RX_RING_SIZE - 1))
1110 cp->rx_ring[i].opts1 =
1111 cpu_to_le32(DescOwn | RingEnd | cp->rx_buf_sz);
1112 else
1113 cp->rx_ring[i].opts1 =
1114 cpu_to_le32(DescOwn | cp->rx_buf_sz);
1115 }
1116
1117 return 0;
1118
1119err_out:
1120 cp_clean_rings(cp);
1121 return -ENOMEM;
1122}
1123
1124static int cp_init_rings (struct cp_private *cp)
1125{
1126 memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
1127 cp->tx_ring[CP_TX_RING_SIZE - 1].opts1 = cpu_to_le32(RingEnd);
1128
1129 cp->rx_tail = 0;
1130 cp->tx_head = cp->tx_tail = 0;
1131
1132 return cp_refill_rx (cp);
1133}
1134
1135static int cp_alloc_rings (struct cp_private *cp)
1136{
1137 void *mem;
1138
1139 mem = pci_alloc_consistent(cp->pdev, CP_RING_BYTES, &cp->ring_dma);
1140 if (!mem)
1141 return -ENOMEM;
1142
1143 cp->rx_ring = mem;
1144 cp->tx_ring = &cp->rx_ring[CP_RX_RING_SIZE];
1145
1146 mem += (CP_RING_BYTES - CP_STATS_SIZE);
1147 cp->nic_stats = mem;
1148 cp->nic_stats_dma = cp->ring_dma + (CP_RING_BYTES - CP_STATS_SIZE);
1149
1150 return cp_init_rings(cp);
1151}
1152
1153static void cp_clean_rings (struct cp_private *cp)
1154{
1155 unsigned i;
1156
1da177e4
LT		 1157 for (i = 0; i < CP_RX_RING_SIZE; i++) {
1158 if (cp->rx_skb[i].skb) {
1159 pci_unmap_single(cp->pdev, cp->rx_skb[i].mapping,
1160 cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
1161 dev_kfree_skb(cp->rx_skb[i].skb);
1162 }
1163 }
1164
1165 for (i = 0; i < CP_TX_RING_SIZE; i++) {
1166 if (cp->tx_skb[i].skb) {
1167 struct sk_buff *skb = cp->tx_skb[i].skb;
5734418d 1168
1da177e4 1169 pci_unmap_single(cp->pdev, cp->tx_skb[i].mapping,
5734418d
FR		 1170 cp->tx_skb[i].len, PCI_DMA_TODEVICE);
1171 if (le32_to_cpu(cp->tx_ring[i].opts1) & LastFrag)
1172 dev_kfree_skb(skb);
1da177e4
LT		 1173 cp->net_stats.tx_dropped++;
1174 }
1175 }
1176
5734418d
FR		 1177 memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
1178 memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
1179
1da177e4
LT		 1180 memset(&cp->rx_skb, 0, sizeof(struct ring_info) * CP_RX_RING_SIZE);
1181 memset(&cp->tx_skb, 0, sizeof(struct ring_info) * CP_TX_RING_SIZE);
1182}
1183
1184static void cp_free_rings (struct cp_private *cp)
1185{
1186 cp_clean_rings(cp);
1187 pci_free_consistent(cp->pdev, CP_RING_BYTES, cp->rx_ring, cp->ring_dma);
1188 cp->rx_ring = NULL;
1189 cp->tx_ring = NULL;
1190 cp->nic_stats = NULL;
1191}
1192
1193static int cp_open (struct net_device *dev)
1194{
1195 struct cp_private *cp = netdev_priv(dev);
1196 int rc;
1197
1198 if (netif_msg_ifup(cp))
1199 printk(KERN_DEBUG "%s: enabling interface\n", dev->name);
1200
1201 rc = cp_alloc_rings(cp);
1202 if (rc)
1203 return rc;
1204
1205 cp_init_hw(cp);
1206
1207 rc = request_irq(dev->irq, cp_interrupt, SA_SHIRQ, dev->name, dev);
1208 if (rc)
1209 goto err_out_hw;
1210
1211 netif_carrier_off(dev);
1212 mii_check_media(&cp->mii_if, netif_msg_link(cp), TRUE);
1213 netif_start_queue(dev);
1214
1215 return 0;
1216
1217err_out_hw:
1218 cp_stop_hw(cp);
1219 cp_free_rings(cp);
1220 return rc;
1221}
1222
1223static int cp_close (struct net_device *dev)
1224{
1225 struct cp_private *cp = netdev_priv(dev);
1226 unsigned long flags;
1227
1228 if (netif_msg_ifdown(cp))
1229 printk(KERN_DEBUG "%s: disabling interface\n", dev->name);
1230
1231 spin_lock_irqsave(&cp->lock, flags);
1232
1233 netif_stop_queue(dev);
1234 netif_carrier_off(dev);
1235
1236 cp_stop_hw(cp);
1237
1238 spin_unlock_irqrestore(&cp->lock, flags);
1239
1240 synchronize_irq(dev->irq);
1241 free_irq(dev->irq, dev);
1242
1243 cp_free_rings(cp);
1244 return 0;
1245}
1246
1247#ifdef BROKEN
1248static int cp_change_mtu(struct net_device *dev, int new_mtu)
1249{
1250 struct cp_private *cp = netdev_priv(dev);
1251 int rc;
1252 unsigned long flags;
1253
1254 /* check for invalid MTU, according to hardware limits */
1255 if (new_mtu < CP_MIN_MTU || new_mtu > CP_MAX_MTU)
1256 return -EINVAL;
1257
1258 /* if network interface not up, no need for complexity */
1259 if (!netif_running(dev)) {
1260 dev->mtu = new_mtu;
1261 cp_set_rxbufsize(cp); /* set new rx buf size */
1262 return 0;
1263 }
1264
1265 spin_lock_irqsave(&cp->lock, flags);
1266
1267 cp_stop_hw(cp); /* stop h/w and free rings */
1268 cp_clean_rings(cp);
1269
1270 dev->mtu = new_mtu;
1271 cp_set_rxbufsize(cp); /* set new rx buf size */
1272
1273 rc = cp_init_rings(cp); /* realloc and restart h/w */
1274 cp_start_hw(cp);
1275
1276 spin_unlock_irqrestore(&cp->lock, flags);
1277
1278 return rc;
1279}
1280#endif /* BROKEN */
1281
1282static char mii_2_8139_map[8] = {
1283 BasicModeCtrl,
1284 BasicModeStatus,
1285 0,
1286 0,
1287 NWayAdvert,
1288 NWayLPAR,
1289 NWayExpansion,
1290 0
1291};
1292
1293static int mdio_read(struct net_device *dev, int phy_id, int location)
1294{
1295 struct cp_private *cp = netdev_priv(dev);
1296
1297 return location < 8 && mii_2_8139_map[location] ?
1298 readw(cp->regs + mii_2_8139_map[location]) : 0;
1299}
1300
1301
1302static void mdio_write(struct net_device *dev, int phy_id, int location,
1303 int value)
1304{
1305 struct cp_private *cp = netdev_priv(dev);
1306
1307 if (location == 0) {
1308 cpw8(Cfg9346, Cfg9346_Unlock);
1309 cpw16(BasicModeCtrl, value);
1310 cpw8(Cfg9346, Cfg9346_Lock);
1311 } else if (location < 8 && mii_2_8139_map[location])
1312 cpw16(mii_2_8139_map[location], value);
1313}
1314
1315/* Set the ethtool Wake-on-LAN settings */
1316static int netdev_set_wol (struct cp_private *cp,
1317 const struct ethtool_wolinfo *wol)
1318{
1319 u8 options;
1320
1321 options = cpr8 (Config3) & ~(LinkUp | MagicPacket);
1322 /* If WOL is being disabled, no need for complexity */
1323 if (wol->wolopts) {
1324 if (wol->wolopts & WAKE_PHY) options |= LinkUp;
1325 if (wol->wolopts & WAKE_MAGIC) options |= MagicPacket;
1326 }
1327
1328 cpw8 (Cfg9346, Cfg9346_Unlock);
1329 cpw8 (Config3, options);
1330 cpw8 (Cfg9346, Cfg9346_Lock);
1331
1332 options = 0; /* Paranoia setting */
1333 options = cpr8 (Config5) & ~(UWF | MWF | BWF);
1334 /* If WOL is being disabled, no need for complexity */
1335 if (wol->wolopts) {
1336 if (wol->wolopts & WAKE_UCAST) options |= UWF;
1337 if (wol->wolopts & WAKE_BCAST) options |= BWF;
1338 if (wol->wolopts & WAKE_MCAST) options |= MWF;
1339 }
1340
1341 cpw8 (Config5, options);
1342
1343 cp->wol_enabled = (wol->wolopts) ? 1 : 0;
1344
1345 return 0;
1346}
1347
1348/* Get the ethtool Wake-on-LAN settings */
1349static void netdev_get_wol (struct cp_private *cp,
1350 struct ethtool_wolinfo *wol)
1351{
1352 u8 options;
1353
1354 wol->wolopts = 0; /* Start from scratch */
1355 wol->supported = WAKE_PHY | WAKE_BCAST | WAKE_MAGIC |
1356 WAKE_MCAST | WAKE_UCAST;
1357 /* We don't need to go on if WOL is disabled */
1358 if (!cp->wol_enabled) return;
1359
1360 options = cpr8 (Config3);
1361 if (options & LinkUp) wol->wolopts |= WAKE_PHY;
1362 if (options & MagicPacket) wol->wolopts |= WAKE_MAGIC;
1363
1364 options = 0; /* Paranoia setting */
1365 options = cpr8 (Config5);
1366 if (options & UWF) wol->wolopts |= WAKE_UCAST;
1367 if (options & BWF) wol->wolopts |= WAKE_BCAST;
1368 if (options & MWF) wol->wolopts |= WAKE_MCAST;
1369}
1370
1371static void cp_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1372{
1373 struct cp_private *cp = netdev_priv(dev);
1374
1375 strcpy (info->driver, DRV_NAME);
1376 strcpy (info->version, DRV_VERSION);
1377 strcpy (info->bus_info, pci_name(cp->pdev));
1378}
1379
1380static int cp_get_regs_len(struct net_device *dev)
1381{
1382 return CP_REGS_SIZE;
1383}
1384
1385static int cp_get_stats_count (struct net_device *dev)
1386{
1387 return CP_NUM_STATS;
1388}
1389
1390static int cp_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1391{
1392 struct cp_private *cp = netdev_priv(dev);
1393 int rc;
1394 unsigned long flags;
1395
1396 spin_lock_irqsave(&cp->lock, flags);
1397 rc = mii_ethtool_gset(&cp->mii_if, cmd);
1398 spin_unlock_irqrestore(&cp->lock, flags);
1399
1400 return rc;
1401}
1402
1403static int cp_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1404{
1405 struct cp_private *cp = netdev_priv(dev);
1406 int rc;
1407 unsigned long flags;
1408
1409 spin_lock_irqsave(&cp->lock, flags);
1410 rc = mii_ethtool_sset(&cp->mii_if, cmd);
1411 spin_unlock_irqrestore(&cp->lock, flags);
1412
1413 return rc;
1414}
1415
1416static int cp_nway_reset(struct net_device *dev)
1417{
1418 struct cp_private *cp = netdev_priv(dev);
1419 return mii_nway_restart(&cp->mii_if);
1420}
1421
1422static u32 cp_get_msglevel(struct net_device *dev)
1423{
1424 struct cp_private *cp = netdev_priv(dev);
1425 return cp->msg_enable;
1426}
1427
1428static void cp_set_msglevel(struct net_device *dev, u32 value)
1429{
1430 struct cp_private *cp = netdev_priv(dev);
1431 cp->msg_enable = value;
1432}
1433
1434static u32 cp_get_rx_csum(struct net_device *dev)
1435{
1436 struct cp_private *cp = netdev_priv(dev);
1437 return (cpr16(CpCmd) & RxChkSum) ? 1 : 0;
1438}
1439
1440static int cp_set_rx_csum(struct net_device *dev, u32 data)
1441{
1442 struct cp_private *cp = netdev_priv(dev);
1443 u16 cmd = cp->cpcmd, newcmd;
1444
1445 newcmd = cmd;
1446
1447 if (data)
1448 newcmd |= RxChkSum;
1449 else
1450 newcmd &= ~RxChkSum;
1451
1452 if (newcmd != cmd) {
1453 unsigned long flags;
1454
1455 spin_lock_irqsave(&cp->lock, flags);
1456 cp->cpcmd = newcmd;
1457 cpw16_f(CpCmd, newcmd);
1458 spin_unlock_irqrestore(&cp->lock, flags);
1459 }
1460
1461 return 0;
1462}
1463
1464static void cp_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1465 void *p)
1466{
1467 struct cp_private *cp = netdev_priv(dev);
1468 unsigned long flags;
1469
1470 if (regs->len < CP_REGS_SIZE)
1471 return /* -EINVAL */;
1472
1473 regs->version = CP_REGS_VER;
1474
1475 spin_lock_irqsave(&cp->lock, flags);
1476 memcpy_fromio(p, cp->regs, CP_REGS_SIZE);
1477 spin_unlock_irqrestore(&cp->lock, flags);
1478}
1479
1480static void cp_get_wol (struct net_device *dev, struct ethtool_wolinfo *wol)
1481{
1482 struct cp_private *cp = netdev_priv(dev);
1483 unsigned long flags;
1484
1485 spin_lock_irqsave (&cp->lock, flags);
1486 netdev_get_wol (cp, wol);
1487 spin_unlock_irqrestore (&cp->lock, flags);
1488}
1489
1490static int cp_set_wol (struct net_device *dev, struct ethtool_wolinfo *wol)
1491{
1492 struct cp_private *cp = netdev_priv(dev);
1493 unsigned long flags;
1494 int rc;
1495
1496 spin_lock_irqsave (&cp->lock, flags);
1497 rc = netdev_set_wol (cp, wol);
1498 spin_unlock_irqrestore (&cp->lock, flags);
1499
1500 return rc;
1501}
1502
1503static void cp_get_strings (struct net_device *dev, u32 stringset, u8 *buf)
1504{
1505 switch (stringset) {
1506 case ETH_SS_STATS:
1507 memcpy(buf, &ethtool_stats_keys, sizeof(ethtool_stats_keys));
1508 break;
1509 default:
1510 BUG();
1511 break;
1512 }
1513}
1514
1515static void cp_get_ethtool_stats (struct net_device *dev,
1516 struct ethtool_stats *estats, u64 *tmp_stats)
1517{
1518 struct cp_private *cp = netdev_priv(dev);
1da177e4
LT		 1519 int i;
1520
97f568d8
SH		 1521 memset(cp->nic_stats, 0, sizeof(struct cp_dma_stats));
1522
1da177e4
LT		 1523 /* begin NIC statistics dump */
1524 cpw32(StatsAddr + 4, (cp->nic_stats_dma >> 16) >> 16);
1525 cpw32(StatsAddr, (cp->nic_stats_dma & 0xffffffff) | DumpStats);
1526 cpr32(StatsAddr);
1527
97f568d8 1528 for (i = 0; i < 1000; i++) {
1da177e4
LT		 1529 if ((cpr32(StatsAddr) & DumpStats) == 0)
1530 break;
97f568d8 1531 udelay(10);
1da177e4 1532 }
97f568d8
SH		 1533 cpw32(StatsAddr, 0);
1534 cpw32(StatsAddr + 4, 0);
1da177e4
LT		 1535
1536 i = 0;
1537 tmp_stats[i++] = le64_to_cpu(cp->nic_stats->tx_ok);
1538 tmp_stats[i++] = le64_to_cpu(cp->nic_stats->rx_ok);
1539 tmp_stats[i++] = le64_to_cpu(cp->nic_stats->tx_err);
1540 tmp_stats[i++] = le32_to_cpu(cp->nic_stats->rx_err);
1541 tmp_stats[i++] = le16_to_cpu(cp->nic_stats->rx_fifo);
1542 tmp_stats[i++] = le16_to_cpu(cp->nic_stats->frame_align);
1543 tmp_stats[i++] = le32_to_cpu(cp->nic_stats->tx_ok_1col);
1544 tmp_stats[i++] = le32_to_cpu(cp->nic_stats->tx_ok_mcol);
1545 tmp_stats[i++] = le64_to_cpu(cp->nic_stats->rx_ok_phys);
1546 tmp_stats[i++] = le64_to_cpu(cp->nic_stats->rx_ok_bcast);
1547 tmp_stats[i++] = le32_to_cpu(cp->nic_stats->rx_ok_mcast);
1548 tmp_stats[i++] = le16_to_cpu(cp->nic_stats->tx_abort);
1549 tmp_stats[i++] = le16_to_cpu(cp->nic_stats->tx_underrun);
1550 tmp_stats[i++] = cp->cp_stats.rx_frags;
1551 if (i != CP_NUM_STATS)
1552 BUG();
1553}
1554
1555static struct ethtool_ops cp_ethtool_ops = {
1556 .get_drvinfo = cp_get_drvinfo,
1557 .get_regs_len = cp_get_regs_len,
1558 .get_stats_count = cp_get_stats_count,
1559 .get_settings = cp_get_settings,
1560 .set_settings = cp_set_settings,
1561 .nway_reset = cp_nway_reset,
1562 .get_link = ethtool_op_get_link,
1563 .get_msglevel = cp_get_msglevel,
1564 .set_msglevel = cp_set_msglevel,
1565 .get_rx_csum = cp_get_rx_csum,
1566 .set_rx_csum = cp_set_rx_csum,
1567 .get_tx_csum = ethtool_op_get_tx_csum,
1568 .set_tx_csum = ethtool_op_set_tx_csum, /* local! */
1569 .get_sg = ethtool_op_get_sg,
1570 .set_sg = ethtool_op_set_sg,
fcec3456
JG		 1571 .get_tso = ethtool_op_get_tso,
1572 .set_tso = ethtool_op_set_tso,
1da177e4
LT		 1573 .get_regs = cp_get_regs,
1574 .get_wol = cp_get_wol,
1575 .set_wol = cp_set_wol,
1576 .get_strings = cp_get_strings,
1577 .get_ethtool_stats = cp_get_ethtool_stats,
1578};
1579
1580static int cp_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1581{
1582 struct cp_private *cp = netdev_priv(dev);
1583 int rc;
1584 unsigned long flags;
1585
1586 if (!netif_running(dev))
1587 return -EINVAL;
1588
1589 spin_lock_irqsave(&cp->lock, flags);
1590 rc = generic_mii_ioctl(&cp->mii_if, if_mii(rq), cmd, NULL);
1591 spin_unlock_irqrestore(&cp->lock, flags);
1592 return rc;
1593}
1594
1595/* Serial EEPROM section. */
1596
1597/* EEPROM_Ctrl bits. */
1598#define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1599#define EE_CS 0x08 /* EEPROM chip select. */
1600#define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1601#define EE_WRITE_0 0x00
1602#define EE_WRITE_1 0x02
1603#define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1604#define EE_ENB (0x80 | EE_CS)
1605
1606/* Delay between EEPROM clock transitions.
1607 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1608 */
1609
1610#define eeprom_delay() readl(ee_addr)
1611
1612/* The EEPROM commands include the alway-set leading bit. */
1613#define EE_WRITE_CMD (5)
1614#define EE_READ_CMD (6)
1615#define EE_ERASE_CMD (7)
1616
1617static int read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1618{
1619 int i;
1620 unsigned retval = 0;
1621 void __iomem *ee_addr = ioaddr + Cfg9346;
1622 int read_cmd = location | (EE_READ_CMD << addr_len);
1623
1624 writeb (EE_ENB & ~EE_CS, ee_addr);
1625 writeb (EE_ENB, ee_addr);
1626 eeprom_delay ();
1627
1628 /* Shift the read command bits out. */
1629 for (i = 4 + addr_len; i >= 0; i--) {
1630 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1631 writeb (EE_ENB | dataval, ee_addr);
1632 eeprom_delay ();
1633 writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
1634 eeprom_delay ();
1635 }
1636 writeb (EE_ENB, ee_addr);
1637 eeprom_delay ();
1638
1639 for (i = 16; i > 0; i--) {
1640 writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
1641 eeprom_delay ();
1642 retval =
1643 (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 :
1644 0);
1645 writeb (EE_ENB, ee_addr);
1646 eeprom_delay ();
1647 }
1648
1649 /* Terminate the EEPROM access. */
1650 writeb (~EE_CS, ee_addr);
1651 eeprom_delay ();
1652
1653 return retval;
1654}
1655
1656/* Put the board into D3cold state and wait for WakeUp signal */
1657static void cp_set_d3_state (struct cp_private *cp)
1658{
1659 pci_enable_wake (cp->pdev, 0, 1); /* Enable PME# generation */
1660 pci_set_power_state (cp->pdev, PCI_D3hot);
1661}
1662
1663static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1664{
1665 struct net_device *dev;
1666 struct cp_private *cp;
1667 int rc;
1668 void __iomem *regs;
1669 long pciaddr;
1670 unsigned int addr_len, i, pci_using_dac;
1671 u8 pci_rev;
1672
1673#ifndef MODULE
1674 static int version_printed;
1675 if (version_printed++ == 0)
1676 printk("%s", version);
1677#endif
1678
1679 pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
1680
1681 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
1682 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev < 0x20) {
1683 printk(KERN_ERR PFX "pci dev %s (id %04x:%04x rev %02x) is not an 8139C+ compatible chip\n",
1684 pci_name(pdev), pdev->vendor, pdev->device, pci_rev);
1685 printk(KERN_ERR PFX "Try the \"8139too\" driver instead.\n");
1686 return -ENODEV;
1687 }
1688
1689 dev = alloc_etherdev(sizeof(struct cp_private));
1690 if (!dev)
1691 return -ENOMEM;
1692 SET_MODULE_OWNER(dev);
1693 SET_NETDEV_DEV(dev, &pdev->dev);
1694
1695 cp = netdev_priv(dev);
1696 cp->pdev = pdev;
1697 cp->dev = dev;
1698 cp->msg_enable = (debug < 0 ? CP_DEF_MSG_ENABLE : debug);
1699 spin_lock_init (&cp->lock);
1700 cp->mii_if.dev = dev;
1701 cp->mii_if.mdio_read = mdio_read;
1702 cp->mii_if.mdio_write = mdio_write;
1703 cp->mii_if.phy_id = CP_INTERNAL_PHY;
1704 cp->mii_if.phy_id_mask = 0x1f;
1705 cp->mii_if.reg_num_mask = 0x1f;
1706 cp_set_rxbufsize(cp);
1707
1708 rc = pci_enable_device(pdev);
1709 if (rc)
1710 goto err_out_free;
1711
1712 rc = pci_set_mwi(pdev);
1713 if (rc)
1714 goto err_out_disable;
1715
1716 rc = pci_request_regions(pdev, DRV_NAME);
1717 if (rc)
1718 goto err_out_mwi;
1719
1720 pciaddr = pci_resource_start(pdev, 1);
1721 if (!pciaddr) {
1722 rc = -EIO;
1723 printk(KERN_ERR PFX "no MMIO resource for pci dev %s\n",
1724 pci_name(pdev));
1725 goto err_out_res;
1726 }
1727 if (pci_resource_len(pdev, 1) < CP_REGS_SIZE) {
1728 rc = -EIO;
1729 printk(KERN_ERR PFX "MMIO resource (%lx) too small on pci dev %s\n",
1730 pci_resource_len(pdev, 1), pci_name(pdev));
1731 goto err_out_res;
1732 }
1733
1734 /* Configure DMA attributes. */
1735 if ((sizeof(dma_addr_t) > 4) &&
8662d061
TK		 1736 !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK) &&
1737 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
1da177e4
LT		 1738 pci_using_dac = 1;
1739 } else {
1740 pci_using_dac = 0;
1741
8662d061 1742 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1da177e4
LT		 1743 if (rc) {
1744 printk(KERN_ERR PFX "No usable DMA configuration, "
1745 "aborting.\n");
1746 goto err_out_res;
1747 }
8662d061 1748 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1da177e4
LT		 1749 if (rc) {
1750 printk(KERN_ERR PFX "No usable consistent DMA configuration, "
1751 "aborting.\n");
1752 goto err_out_res;
1753 }
1754 }
1755
1756 cp->cpcmd = (pci_using_dac ? PCIDAC : 0) |
1757 PCIMulRW | RxChkSum | CpRxOn | CpTxOn;
1758
1759 regs = ioremap(pciaddr, CP_REGS_SIZE);
1760 if (!regs) {
1761 rc = -EIO;
1762 printk(KERN_ERR PFX "Cannot map PCI MMIO (%lx@%lx) on pci dev %s\n",
1763 pci_resource_len(pdev, 1), pciaddr, pci_name(pdev));
1764 goto err_out_res;
1765 }
1766 dev->base_addr = (unsigned long) regs;
1767 cp->regs = regs;
1768
1769 cp_stop_hw(cp);
1770
1771 /* read MAC address from EEPROM */
1772 addr_len = read_eeprom (regs, 0, 8) == 0x8129 ? 8 : 6;
1773 for (i = 0; i < 3; i++)
1774 ((u16 *) (dev->dev_addr))[i] =
1775 le16_to_cpu (read_eeprom (regs, i + 7, addr_len));
1776
1777 dev->open = cp_open;
1778 dev->stop = cp_close;
1779 dev->set_multicast_list = cp_set_rx_mode;
1780 dev->hard_start_xmit = cp_start_xmit;
1781 dev->get_stats = cp_get_stats;
1782 dev->do_ioctl = cp_ioctl;
1783 dev->poll = cp_rx_poll;
7502cd10
SK		 1784#ifdef CONFIG_NET_POLL_CONTROLLER
1785 dev->poll_controller = cp_poll_controller;
1786#endif
1da177e4
LT		 1787 dev->weight = 16; /* arbitrary? from NAPI_HOWTO.txt. */
1788#ifdef BROKEN
1789 dev->change_mtu = cp_change_mtu;
1790#endif
1791 dev->ethtool_ops = &cp_ethtool_ops;
1792#if 0
1793 dev->tx_timeout = cp_tx_timeout;
1794 dev->watchdog_timeo = TX_TIMEOUT;
1795#endif
1796
1797#if CP_VLAN_TAG_USED
1798 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1799 dev->vlan_rx_register = cp_vlan_rx_register;
1800 dev->vlan_rx_kill_vid = cp_vlan_rx_kill_vid;
1801#endif
1802
1803 if (pci_using_dac)
1804 dev->features |= NETIF_F_HIGHDMA;
1805
fcec3456
JG		 1806#if 0 /* disabled by default until verified */
1807 dev->features |= NETIF_F_TSO;
1808#endif
1809
1da177e4
LT		 1810 dev->irq = pdev->irq;
1811
1812 rc = register_netdev(dev);
1813 if (rc)
1814 goto err_out_iomap;
1815
1816 printk (KERN_INFO "%s: RTL-8139C+ at 0x%lx, "
1817 "%02x:%02x:%02x:%02x:%02x:%02x, "
1818 "IRQ %d\n",
1819 dev->name,
1820 dev->base_addr,
1821 dev->dev_addr[0], dev->dev_addr[1],
1822 dev->dev_addr[2], dev->dev_addr[3],
1823 dev->dev_addr[4], dev->dev_addr[5],
1824 dev->irq);
1825
1826 pci_set_drvdata(pdev, dev);
1827
1828 /* enable busmastering and memory-write-invalidate */
1829 pci_set_master(pdev);
1830
1831 if (cp->wol_enabled) cp_set_d3_state (cp);
1832
1833 return 0;
1834
1835err_out_iomap:
1836 iounmap(regs);
1837err_out_res:
1838 pci_release_regions(pdev);
1839err_out_mwi:
1840 pci_clear_mwi(pdev);
1841err_out_disable:
1842 pci_disable_device(pdev);
1843err_out_free:
1844 free_netdev(dev);
1845 return rc;
1846}
1847
1848static void cp_remove_one (struct pci_dev *pdev)
1849{
1850 struct net_device *dev = pci_get_drvdata(pdev);
1851 struct cp_private *cp = netdev_priv(dev);
1852
1853 if (!dev)
1854 BUG();
1855 unregister_netdev(dev);
1856 iounmap(cp->regs);
1857 if (cp->wol_enabled) pci_set_power_state (pdev, PCI_D0);
1858 pci_release_regions(pdev);
1859 pci_clear_mwi(pdev);
1860 pci_disable_device(pdev);
1861 pci_set_drvdata(pdev, NULL);
1862 free_netdev(dev);
1863}
1864
1865#ifdef CONFIG_PM
05adc3b7 1866static int cp_suspend (struct pci_dev *pdev, pm_message_t state)
1da177e4
LT		 1867{
1868 struct net_device *dev;
1869 struct cp_private *cp;
1870 unsigned long flags;
1871
1872 dev = pci_get_drvdata (pdev);
1873 cp = netdev_priv(dev);
1874
1875 if (!dev || !netif_running (dev)) return 0;
1876
1877 netif_device_detach (dev);
1878 netif_stop_queue (dev);
1879
1880 spin_lock_irqsave (&cp->lock, flags);
1881
1882 /* Disable Rx and Tx */
1883 cpw16 (IntrMask, 0);
1884 cpw8 (Cmd, cpr8 (Cmd) & (~RxOn | ~TxOn));
1885
1886 spin_unlock_irqrestore (&cp->lock, flags);
1887
1888 if (cp->pdev && cp->wol_enabled) {
1889 pci_save_state (cp->pdev);
1890 cp_set_d3_state (cp);
1891 }
1892
1893 return 0;
1894}
1895
1896static int cp_resume (struct pci_dev *pdev)
1897{
1898 struct net_device *dev;
1899 struct cp_private *cp;
a4cf0761 1900 unsigned long flags;
1da177e4
LT		 1901
1902 dev = pci_get_drvdata (pdev);
1903 cp = netdev_priv(dev);
1904
1905 netif_device_attach (dev);
1906
1907 if (cp->pdev && cp->wol_enabled) {
1908 pci_set_power_state (cp->pdev, PCI_D0);
1909 pci_restore_state (cp->pdev);
1910 }
1911
1912 cp_init_hw (cp);
1913 netif_start_queue (dev);
a4cf0761
PO		 1914
1915 spin_lock_irqsave (&cp->lock, flags);
1916
1917 mii_check_media(&cp->mii_if, netif_msg_link(cp), FALSE);
1918
1919 spin_unlock_irqrestore (&cp->lock, flags);
1da177e4
LT		 1920
1921 return 0;
1922}
1923#endif /* CONFIG_PM */
1924
1925static struct pci_driver cp_driver = {
1926 .name = DRV_NAME,
1927 .id_table = cp_pci_tbl,
1928 .probe = cp_init_one,
1929 .remove = cp_remove_one,
1930#ifdef CONFIG_PM
1931 .resume = cp_resume,
1932 .suspend = cp_suspend,
1933#endif
1934};
1935
1936static int __init cp_init (void)
1937{
1938#ifdef MODULE
1939 printk("%s", version);
1940#endif
1941 return pci_module_init (&cp_driver);
1942}
1943
1944static void __exit cp_exit (void)
1945{
1946 pci_unregister_driver (&cp_driver);
1947}
1948
1949module_init(cp_init);
1950module_exit(cp_exit);
Clone of davem's net-next-2.6 tree