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r8169: populate the hw_start handler for the 8168
[linux-2.6/mini2440.git] / drivers / net / r8169.c
blob2478ece93bc505968919dc14787189221a76b6d8
1 /*
2 =========================================================================
3 r8169.c: A RealTek RTL-8169 Gigabit Ethernet driver for Linux kernel 2.4.x.
4 --------------------------------------------------------------------
5
6 History:
7 Feb 4 2002 - created initially by ShuChen <shuchen@realtek.com.tw>.
8 May 20 2002 - Add link status force-mode and TBI mode support.
9 2004 - Massive updates. See kernel SCM system for details.
10 =========================================================================
11 1. [DEPRECATED: use ethtool instead] The media can be forced in 5 modes.
12 Command: 'insmod r8169 media = SET_MEDIA'
13 Ex: 'insmod r8169 media = 0x04' will force PHY to operate in 100Mpbs Half-duplex.
14
15 SET_MEDIA can be:
16 _10_Half = 0x01
17 _10_Full = 0x02
18 _100_Half = 0x04
19 _100_Full = 0x08
20 _1000_Full = 0x10
21
22 2. Support TBI mode.
23 =========================================================================
24 VERSION 1.1 <2002/10/4>
25
26 The bit4:0 of MII register 4 is called "selector field", and have to be
27 00001b to indicate support of IEEE std 802.3 during NWay process of
28 exchanging Link Code Word (FLP).
29
30 VERSION 1.2 <2002/11/30>
31
32 - Large style cleanup
33 - Use ether_crc in stock kernel (linux/crc32.h)
34 - Copy mc_filter setup code from 8139cp
35 (includes an optimization, and avoids set_bit use)
36
37 VERSION 1.6LK <2004/04/14>
38
39 - Merge of Realtek's version 1.6
40 - Conversion to DMA API
41 - Suspend/resume
42 - Endianness
43 - Misc Rx/Tx bugs
44
45 VERSION 2.2LK <2005/01/25>
46
47 - RX csum, TX csum/SG, TSO
48 - VLAN
49 - baby (< 7200) Jumbo frames support
50 - Merge of Realtek's version 2.2 (new phy)
51 */
52
53 #include <linux/module.h>
54 #include <linux/moduleparam.h>
55 #include <linux/pci.h>
56 #include <linux/netdevice.h>
57 #include <linux/etherdevice.h>
58 #include <linux/delay.h>
59 #include <linux/ethtool.h>
60 #include <linux/mii.h>
61 #include <linux/if_vlan.h>
62 #include <linux/crc32.h>
63 #include <linux/in.h>
64 #include <linux/ip.h>
65 #include <linux/tcp.h>
66 #include <linux/init.h>
67 #include <linux/dma-mapping.h>
68
69 #include <asm/system.h>
70 #include <asm/io.h>
71 #include <asm/irq.h>
72
73 #ifdef CONFIG_R8169_NAPI
74 #define NAPI_SUFFIX "-NAPI"
75 #else
76 #define NAPI_SUFFIX ""
77 #endif
78
79 #define RTL8169_VERSION "2.2LK" NAPI_SUFFIX
80 #define MODULENAME "r8169"
81 #define PFX MODULENAME ": "
82
83 #ifdef RTL8169_DEBUG
84 #define assert(expr) \
85 if (!(expr)) { \
86 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
87 #expr,__FILE__,__FUNCTION__,__LINE__); \
88 }
89 #define dprintk(fmt, args...) do { printk(PFX fmt, ## args); } while (0)
90 #else
91 #define assert(expr) do {} while (0)
92 #define dprintk(fmt, args...) do {} while (0)
93 #endif /* RTL8169_DEBUG */
94
95 #define R8169_MSG_DEFAULT \
96 (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
97
98 #define TX_BUFFS_AVAIL(tp) \
99 (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
100
101 #ifdef CONFIG_R8169_NAPI
102 #define rtl8169_rx_skb netif_receive_skb
103 #define rtl8169_rx_hwaccel_skb vlan_hwaccel_receive_skb
104 #define rtl8169_rx_quota(count, quota) min(count, quota)
105 #else
106 #define rtl8169_rx_skb netif_rx
107 #define rtl8169_rx_hwaccel_skb vlan_hwaccel_rx
108 #define rtl8169_rx_quota(count, quota) count
109 #endif
110
111 /* media options */
112 #define MAX_UNITS 8
113 static int media[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
114 static int num_media = 0;
115
116 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
117 static const int max_interrupt_work = 20;
118
119 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
120 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
121 static const int multicast_filter_limit = 32;
122
123 /* MAC address length */
124 #define MAC_ADDR_LEN 6
125
126 #define RX_FIFO_THRESH 7 /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
127 #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
128 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
129 #define EarlyTxThld 0x3F /* 0x3F means NO early transmit */
130 #define RxPacketMaxSize 0x3FE8 /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
131 #define SafeMtu 0x1c20 /* ... actually life sucks beyond ~7k */
132 #define InterFrameGap 0x03 /* 3 means InterFrameGap = the shortest one */
133
134 #define R8169_REGS_SIZE 256
135 #define R8169_NAPI_WEIGHT 64
136 #define NUM_TX_DESC 64 /* Number of Tx descriptor registers */
137 #define NUM_RX_DESC 256 /* Number of Rx descriptor registers */
138 #define RX_BUF_SIZE 1536 /* Rx Buffer size */
139 #define R8169_TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc))
140 #define R8169_RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))
141
142 #define RTL8169_TX_TIMEOUT (6*HZ)
143 #define RTL8169_PHY_TIMEOUT (10*HZ)
144
145 /* write/read MMIO register */
146 #define RTL_W8(reg, val8) writeb ((val8), ioaddr + (reg))
147 #define RTL_W16(reg, val16) writew ((val16), ioaddr + (reg))
148 #define RTL_W32(reg, val32) writel ((val32), ioaddr + (reg))
149 #define RTL_R8(reg) readb (ioaddr + (reg))
150 #define RTL_R16(reg) readw (ioaddr + (reg))
151 #define RTL_R32(reg) ((unsigned long) readl (ioaddr + (reg)))
152
153 enum mac_version {
154 RTL_GIGA_MAC_VER_01 = 0x00,
155 RTL_GIGA_MAC_VER_02 = 0x01,
156 RTL_GIGA_MAC_VER_03 = 0x02,
157 RTL_GIGA_MAC_VER_04 = 0x03,
158 RTL_GIGA_MAC_VER_05 = 0x04,
159 RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
160 RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be 8168Bf
161 RTL_GIGA_MAC_VER_13 = 0x0d,
162 RTL_GIGA_MAC_VER_14 = 0x0e,
163 RTL_GIGA_MAC_VER_15 = 0x0f
164 };
165
166 enum phy_version {
167 RTL_GIGA_PHY_VER_C = 0x03, /* PHY Reg 0x03 bit0-3 == 0x0000 */
168 RTL_GIGA_PHY_VER_D = 0x04, /* PHY Reg 0x03 bit0-3 == 0x0000 */
169 RTL_GIGA_PHY_VER_E = 0x05, /* PHY Reg 0x03 bit0-3 == 0x0000 */
170 RTL_GIGA_PHY_VER_F = 0x06, /* PHY Reg 0x03 bit0-3 == 0x0001 */
171 RTL_GIGA_PHY_VER_G = 0x07, /* PHY Reg 0x03 bit0-3 == 0x0002 */
172 RTL_GIGA_PHY_VER_H = 0x08, /* PHY Reg 0x03 bit0-3 == 0x0003 */
173 };
174
175 #define _R(NAME,MAC,MASK) \
176 { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
177
178 static const struct {
179 const char *name;
180 u8 mac_version;
181 u32 RxConfigMask; /* Clears the bits supported by this chip */
182 } rtl_chip_info[] = {
183 _R("RTL8169", RTL_GIGA_MAC_VER_01, 0xff7e1880),
184 _R("RTL8169s/8110s", RTL_GIGA_MAC_VER_02, 0xff7e1880),
185 _R("RTL8169s/8110s", RTL_GIGA_MAC_VER_03, 0xff7e1880),
186 _R("RTL8169sb/8110sb", RTL_GIGA_MAC_VER_04, 0xff7e1880),
187 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_05, 0xff7e1880),
188 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
189 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
190 _R("RTL8101e", RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
191 _R("RTL8100e", RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
192 _R("RTL8100e", RTL_GIGA_MAC_VER_15, 0xff7e1880) // PCI-E 8139
193 };
194 #undef _R
195
196 enum cfg_version {
197 RTL_CFG_0 = 0x00,
198 RTL_CFG_1,
199 RTL_CFG_2
200 };
201
202 static void rtl_hw_start_8169(struct net_device *);
203 static void rtl_hw_start_8168(struct net_device *);
204 static void rtl_hw_start_8101(struct net_device *);
205
206 static const struct {
207 void (*hw_start)(struct net_device *);
208 unsigned int region;
209 unsigned int align;
210 } rtl_cfg_info[] = {
211 [RTL_CFG_0] = { rtl_hw_start_8169, 1, NET_IP_ALIGN },
212 [RTL_CFG_1] = { rtl_hw_start_8168, 2, 8 },
213 [RTL_CFG_2] = { rtl_hw_start_8101, 2, 8 }
214 };
215
216 static struct pci_device_id rtl8169_pci_tbl[] = {
217 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
218 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
219 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167), 0, 0, RTL_CFG_0 },
220 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168), 0, 0, RTL_CFG_1 },
221 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), 0, 0, RTL_CFG_0 },
222 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4300), 0, 0, RTL_CFG_0 },
223 { PCI_DEVICE(0x1259, 0xc107), 0, 0, RTL_CFG_0 },
224 { PCI_DEVICE(0x16ec, 0x0116), 0, 0, RTL_CFG_0 },
225 { PCI_VENDOR_ID_LINKSYS, 0x1032,
226 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
227 {0,},
228 };
229
230 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
231
232 static int rx_copybreak = 200;
233 static int use_dac;
234 static struct {
235 u32 msg_enable;
236 } debug = { -1 };
237
238 enum RTL8169_registers {
239 MAC0 = 0, /* Ethernet hardware address. */
240 MAR0 = 8, /* Multicast filter. */
241 CounterAddrLow = 0x10,
242 CounterAddrHigh = 0x14,
243 TxDescStartAddrLow = 0x20,
244 TxDescStartAddrHigh = 0x24,
245 TxHDescStartAddrLow = 0x28,
246 TxHDescStartAddrHigh = 0x2c,
247 FLASH = 0x30,
248 ERSR = 0x36,
249 ChipCmd = 0x37,
250 TxPoll = 0x38,
251 IntrMask = 0x3C,
252 IntrStatus = 0x3E,
253 TxConfig = 0x40,
254 RxConfig = 0x44,
255 RxMissed = 0x4C,
256 Cfg9346 = 0x50,
257 Config0 = 0x51,
258 Config1 = 0x52,
259 Config2 = 0x53,
260 Config3 = 0x54,
261 Config4 = 0x55,
262 Config5 = 0x56,
263 MultiIntr = 0x5C,
264 PHYAR = 0x60,
265 TBICSR = 0x64,
266 TBI_ANAR = 0x68,
267 TBI_LPAR = 0x6A,
268 PHYstatus = 0x6C,
269 RxMaxSize = 0xDA,
270 CPlusCmd = 0xE0,
271 IntrMitigate = 0xE2,
272 RxDescAddrLow = 0xE4,
273 RxDescAddrHigh = 0xE8,
274 EarlyTxThres = 0xEC,
275 FuncEvent = 0xF0,
276 FuncEventMask = 0xF4,
277 FuncPresetState = 0xF8,
278 FuncForceEvent = 0xFC,
279 };
280
281 enum RTL8169_register_content {
282 /* InterruptStatusBits */
283 SYSErr = 0x8000,
284 PCSTimeout = 0x4000,
285 SWInt = 0x0100,
286 TxDescUnavail = 0x80,
287 RxFIFOOver = 0x40,
288 LinkChg = 0x20,
289 RxOverflow = 0x10,
290 TxErr = 0x08,
291 TxOK = 0x04,
292 RxErr = 0x02,
293 RxOK = 0x01,
294
295 /* RxStatusDesc */
296 RxFOVF = (1 << 23),
297 RxRWT = (1 << 22),
298 RxRES = (1 << 21),
299 RxRUNT = (1 << 20),
300 RxCRC = (1 << 19),
301
302 /* ChipCmdBits */
303 CmdReset = 0x10,
304 CmdRxEnb = 0x08,
305 CmdTxEnb = 0x04,
306 RxBufEmpty = 0x01,
307
308 /* Cfg9346Bits */
309 Cfg9346_Lock = 0x00,
310 Cfg9346_Unlock = 0xC0,
311
312 /* rx_mode_bits */
313 AcceptErr = 0x20,
314 AcceptRunt = 0x10,
315 AcceptBroadcast = 0x08,
316 AcceptMulticast = 0x04,
317 AcceptMyPhys = 0x02,
318 AcceptAllPhys = 0x01,
319
320 /* RxConfigBits */
321 RxCfgFIFOShift = 13,
322 RxCfgDMAShift = 8,
323
324 /* TxConfigBits */
325 TxInterFrameGapShift = 24,
326 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
327
328 /* Config1 register p.24 */
329 PMEnable = (1 << 0), /* Power Management Enable */
330
331 /* Config3 register p.25 */
332 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
333 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
334
335 /* Config5 register p.27 */
336 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
337 MWF = (1 << 5), /* Accept Multicast wakeup frame */
338 UWF = (1 << 4), /* Accept Unicast wakeup frame */
339 LanWake = (1 << 1), /* LanWake enable/disable */
340 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
341
342 /* TBICSR p.28 */
343 TBIReset = 0x80000000,
344 TBILoopback = 0x40000000,
345 TBINwEnable = 0x20000000,
346 TBINwRestart = 0x10000000,
347 TBILinkOk = 0x02000000,
348 TBINwComplete = 0x01000000,
349
350 /* CPlusCmd p.31 */
351 RxVlan = (1 << 6),
352 RxChkSum = (1 << 5),
353 PCIDAC = (1 << 4),
354 PCIMulRW = (1 << 3),
355
356 /* rtl8169_PHYstatus */
357 TBI_Enable = 0x80,
358 TxFlowCtrl = 0x40,
359 RxFlowCtrl = 0x20,
360 _1000bpsF = 0x10,
361 _100bps = 0x08,
362 _10bps = 0x04,
363 LinkStatus = 0x02,
364 FullDup = 0x01,
365
366 /* _MediaType */
367 _10_Half = 0x01,
368 _10_Full = 0x02,
369 _100_Half = 0x04,
370 _100_Full = 0x08,
371 _1000_Full = 0x10,
372
373 /* _TBICSRBit */
374 TBILinkOK = 0x02000000,
375
376 /* DumpCounterCommand */
377 CounterDump = 0x8,
378 };
379
380 enum _DescStatusBit {
381 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
382 RingEnd = (1 << 30), /* End of descriptor ring */
383 FirstFrag = (1 << 29), /* First segment of a packet */
384 LastFrag = (1 << 28), /* Final segment of a packet */
385
386 /* Tx private */
387 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
388 MSSShift = 16, /* MSS value position */
389 MSSMask = 0xfff, /* MSS value + LargeSend bit: 12 bits */
390 IPCS = (1 << 18), /* Calculate IP checksum */
391 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
392 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
393 TxVlanTag = (1 << 17), /* Add VLAN tag */
394
395 /* Rx private */
396 PID1 = (1 << 18), /* Protocol ID bit 1/2 */
397 PID0 = (1 << 17), /* Protocol ID bit 2/2 */
398
399 #define RxProtoUDP (PID1)
400 #define RxProtoTCP (PID0)
401 #define RxProtoIP (PID1 | PID0)
402 #define RxProtoMask RxProtoIP
403
404 IPFail = (1 << 16), /* IP checksum failed */
405 UDPFail = (1 << 15), /* UDP/IP checksum failed */
406 TCPFail = (1 << 14), /* TCP/IP checksum failed */
407 RxVlanTag = (1 << 16), /* VLAN tag available */
408 };
409
410 #define RsvdMask 0x3fffc000
411
412 struct TxDesc {
413 u32 opts1;
414 u32 opts2;
415 u64 addr;
416 };
417
418 struct RxDesc {
419 u32 opts1;
420 u32 opts2;
421 u64 addr;
422 };
423
424 struct ring_info {
425 struct sk_buff *skb;
426 u32 len;
427 u8 __pad[sizeof(void *) - sizeof(u32)];
428 };
429
430 struct rtl8169_private {
431 void __iomem *mmio_addr; /* memory map physical address */
432 struct pci_dev *pci_dev; /* Index of PCI device */
433 struct net_device *dev;
434 struct net_device_stats stats; /* statistics of net device */
435 spinlock_t lock; /* spin lock flag */
436 u32 msg_enable;
437 int chipset;
438 int mac_version;
439 int phy_version;
440 u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
441 u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
442 u32 dirty_rx;
443 u32 dirty_tx;
444 struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
445 struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
446 dma_addr_t TxPhyAddr;
447 dma_addr_t RxPhyAddr;
448 struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
449 struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
450 unsigned align;
451 unsigned rx_buf_sz;
452 struct timer_list timer;
453 u16 cp_cmd;
454 u16 intr_mask;
455 int phy_auto_nego_reg;
456 int phy_1000_ctrl_reg;
457 #ifdef CONFIG_R8169_VLAN
458 struct vlan_group *vlgrp;
459 #endif
460 int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
461 void (*get_settings)(struct net_device *, struct ethtool_cmd *);
462 void (*phy_reset_enable)(void __iomem *);
463 void (*hw_start)(struct net_device *);
464 unsigned int (*phy_reset_pending)(void __iomem *);
465 unsigned int (*link_ok)(void __iomem *);
466 struct delayed_work task;
467 unsigned wol_enabled : 1;
468 };
469
470 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
471 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
472 module_param_array(media, int, &num_media, 0);
473 MODULE_PARM_DESC(media, "force phy operation. Deprecated by ethtool (8).");
474 module_param(rx_copybreak, int, 0);
475 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
476 module_param(use_dac, int, 0);
477 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
478 module_param_named(debug, debug.msg_enable, int, 0);
479 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
480 MODULE_LICENSE("GPL");
481 MODULE_VERSION(RTL8169_VERSION);
482
483 static int rtl8169_open(struct net_device *dev);
484 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
485 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
486 static int rtl8169_init_ring(struct net_device *dev);
487 static void rtl_hw_start(struct net_device *dev);
488 static int rtl8169_close(struct net_device *dev);
489 static void rtl_set_rx_mode(struct net_device *dev);
490 static void rtl8169_tx_timeout(struct net_device *dev);
491 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
492 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
493 void __iomem *);
494 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
495 static void rtl8169_down(struct net_device *dev);
496 static void rtl8169_rx_clear(struct rtl8169_private *tp);
497
498 #ifdef CONFIG_R8169_NAPI
499 static int rtl8169_poll(struct net_device *dev, int *budget);
500 #endif
501
502 static const u16 rtl8169_intr_mask =
503 SYSErr | LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK;
504 static const u16 rtl8169_napi_event =
505 RxOK | RxOverflow | RxFIFOOver | TxOK | TxErr;
506 static const unsigned int rtl8169_rx_config =
507 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
508
509 static void mdio_write(void __iomem *ioaddr, int RegAddr, int value)
510 {
511 int i;
512
513 RTL_W32(PHYAR, 0x80000000 | (RegAddr & 0xFF) << 16 | value);
514
515 for (i = 20; i > 0; i--) {
516 /* Check if the RTL8169 has completed writing to the specified MII register */
517 if (!(RTL_R32(PHYAR) & 0x80000000))
518 break;
519 udelay(25);
520 }
521 }
522
523 static int mdio_read(void __iomem *ioaddr, int RegAddr)
524 {
525 int i, value = -1;
526
527 RTL_W32(PHYAR, 0x0 | (RegAddr & 0xFF) << 16);
528
529 for (i = 20; i > 0; i--) {
530 /* Check if the RTL8169 has completed retrieving data from the specified MII register */
531 if (RTL_R32(PHYAR) & 0x80000000) {
532 value = (int) (RTL_R32(PHYAR) & 0xFFFF);
533 break;
534 }
535 udelay(25);
536 }
537 return value;
538 }
539
540 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
541 {
542 RTL_W16(IntrMask, 0x0000);
543
544 RTL_W16(IntrStatus, 0xffff);
545 }
546
547 static void rtl8169_asic_down(void __iomem *ioaddr)
548 {
549 RTL_W8(ChipCmd, 0x00);
550 rtl8169_irq_mask_and_ack(ioaddr);
551 RTL_R16(CPlusCmd);
552 }
553
554 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
555 {
556 return RTL_R32(TBICSR) & TBIReset;
557 }
558
559 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
560 {
561 return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
562 }
563
564 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
565 {
566 return RTL_R32(TBICSR) & TBILinkOk;
567 }
568
569 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
570 {
571 return RTL_R8(PHYstatus) & LinkStatus;
572 }
573
574 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
575 {
576 RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
577 }
578
579 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
580 {
581 unsigned int val;
582
583 val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
584 mdio_write(ioaddr, MII_BMCR, val & 0xffff);
585 }
586
587 static void rtl8169_check_link_status(struct net_device *dev,
588 struct rtl8169_private *tp, void __iomem *ioaddr)
589 {
590 unsigned long flags;
591
592 spin_lock_irqsave(&tp->lock, flags);
593 if (tp->link_ok(ioaddr)) {
594 netif_carrier_on(dev);
595 if (netif_msg_ifup(tp))
596 printk(KERN_INFO PFX "%s: link up\n", dev->name);
597 } else {
598 if (netif_msg_ifdown(tp))
599 printk(KERN_INFO PFX "%s: link down\n", dev->name);
600 netif_carrier_off(dev);
601 }
602 spin_unlock_irqrestore(&tp->lock, flags);
603 }
604
605 static void rtl8169_link_option(int idx, u8 *autoneg, u16 *speed, u8 *duplex)
606 {
607 struct {
608 u16 speed;
609 u8 duplex;
610 u8 autoneg;
611 u8 media;
612 } link_settings[] = {
613 { SPEED_10, DUPLEX_HALF, AUTONEG_DISABLE, _10_Half },
614 { SPEED_10, DUPLEX_FULL, AUTONEG_DISABLE, _10_Full },
615 { SPEED_100, DUPLEX_HALF, AUTONEG_DISABLE, _100_Half },
616 { SPEED_100, DUPLEX_FULL, AUTONEG_DISABLE, _100_Full },
617 { SPEED_1000, DUPLEX_FULL, AUTONEG_DISABLE, _1000_Full },
618 /* Make TBI happy */
619 { SPEED_1000, DUPLEX_FULL, AUTONEG_ENABLE, 0xff }
620 }, *p;
621 unsigned char option;
622
623 option = ((idx < MAX_UNITS) && (idx >= 0)) ? media[idx] : 0xff;
624
625 if ((option != 0xff) && !idx && netif_msg_drv(&debug))
626 printk(KERN_WARNING PFX "media option is deprecated.\n");
627
628 for (p = link_settings; p->media != 0xff; p++) {
629 if (p->media == option)
630 break;
631 }
632 *autoneg = p->autoneg;
633 *speed = p->speed;
634 *duplex = p->duplex;
635 }
636
637 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
638 {
639 struct rtl8169_private *tp = netdev_priv(dev);
640 void __iomem *ioaddr = tp->mmio_addr;
641 u8 options;
642
643 wol->wolopts = 0;
644
645 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
646 wol->supported = WAKE_ANY;
647
648 spin_lock_irq(&tp->lock);
649
650 options = RTL_R8(Config1);
651 if (!(options & PMEnable))
652 goto out_unlock;
653
654 options = RTL_R8(Config3);
655 if (options & LinkUp)
656 wol->wolopts |= WAKE_PHY;
657 if (options & MagicPacket)
658 wol->wolopts |= WAKE_MAGIC;
659
660 options = RTL_R8(Config5);
661 if (options & UWF)
662 wol->wolopts |= WAKE_UCAST;
663 if (options & BWF)
664 wol->wolopts |= WAKE_BCAST;
665 if (options & MWF)
666 wol->wolopts |= WAKE_MCAST;
667
668 out_unlock:
669 spin_unlock_irq(&tp->lock);
670 }
671
672 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
673 {
674 struct rtl8169_private *tp = netdev_priv(dev);
675 void __iomem *ioaddr = tp->mmio_addr;
676 int i;
677 static struct {
678 u32 opt;
679 u16 reg;
680 u8 mask;
681 } cfg[] = {
682 { WAKE_ANY, Config1, PMEnable },
683 { WAKE_PHY, Config3, LinkUp },
684 { WAKE_MAGIC, Config3, MagicPacket },
685 { WAKE_UCAST, Config5, UWF },
686 { WAKE_BCAST, Config5, BWF },
687 { WAKE_MCAST, Config5, MWF },
688 { WAKE_ANY, Config5, LanWake }
689 };
690
691 spin_lock_irq(&tp->lock);
692
693 RTL_W8(Cfg9346, Cfg9346_Unlock);
694
695 for (i = 0; i < ARRAY_SIZE(cfg); i++) {
696 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
697 if (wol->wolopts & cfg[i].opt)
698 options |= cfg[i].mask;
699 RTL_W8(cfg[i].reg, options);
700 }
701
702 RTL_W8(Cfg9346, Cfg9346_Lock);
703
704 tp->wol_enabled = (wol->wolopts) ? 1 : 0;
705
706 spin_unlock_irq(&tp->lock);
707
708 return 0;
709 }
710
711 static void rtl8169_get_drvinfo(struct net_device *dev,
712 struct ethtool_drvinfo *info)
713 {
714 struct rtl8169_private *tp = netdev_priv(dev);
715
716 strcpy(info->driver, MODULENAME);
717 strcpy(info->version, RTL8169_VERSION);
718 strcpy(info->bus_info, pci_name(tp->pci_dev));
719 }
720
721 static int rtl8169_get_regs_len(struct net_device *dev)
722 {
723 return R8169_REGS_SIZE;
724 }
725
726 static int rtl8169_set_speed_tbi(struct net_device *dev,
727 u8 autoneg, u16 speed, u8 duplex)
728 {
729 struct rtl8169_private *tp = netdev_priv(dev);
730 void __iomem *ioaddr = tp->mmio_addr;
731 int ret = 0;
732 u32 reg;
733
734 reg = RTL_R32(TBICSR);
735 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
736 (duplex == DUPLEX_FULL)) {
737 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
738 } else if (autoneg == AUTONEG_ENABLE)
739 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
740 else {
741 if (netif_msg_link(tp)) {
742 printk(KERN_WARNING "%s: "
743 "incorrect speed setting refused in TBI mode\n",
744 dev->name);
745 }
746 ret = -EOPNOTSUPP;
747 }
748
749 return ret;
750 }
751
752 static int rtl8169_set_speed_xmii(struct net_device *dev,
753 u8 autoneg, u16 speed, u8 duplex)
754 {
755 struct rtl8169_private *tp = netdev_priv(dev);
756 void __iomem *ioaddr = tp->mmio_addr;
757 int auto_nego, giga_ctrl;
758
759 auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
760 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
761 ADVERTISE_100HALF | ADVERTISE_100FULL);
762 giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
763 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
764
765 if (autoneg == AUTONEG_ENABLE) {
766 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
767 ADVERTISE_100HALF | ADVERTISE_100FULL);
768 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
769 } else {
770 if (speed == SPEED_10)
771 auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
772 else if (speed == SPEED_100)
773 auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
774 else if (speed == SPEED_1000)
775 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
776
777 if (duplex == DUPLEX_HALF)
778 auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
779
780 if (duplex == DUPLEX_FULL)
781 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
782
783 /* This tweak comes straight from Realtek's driver. */
784 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
785 (tp->mac_version == RTL_GIGA_MAC_VER_13)) {
786 auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
787 }
788 }
789
790 /* The 8100e/8101e do Fast Ethernet only. */
791 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
792 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
793 (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
794 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
795 netif_msg_link(tp)) {
796 printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
797 dev->name);
798 }
799 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
800 }
801
802 auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
803
804 tp->phy_auto_nego_reg = auto_nego;
805 tp->phy_1000_ctrl_reg = giga_ctrl;
806
807 mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
808 mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
809 mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
810 return 0;
811 }
812
813 static int rtl8169_set_speed(struct net_device *dev,
814 u8 autoneg, u16 speed, u8 duplex)
815 {
816 struct rtl8169_private *tp = netdev_priv(dev);
817 int ret;
818
819 ret = tp->set_speed(dev, autoneg, speed, duplex);
820
821 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
822 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
823
824 return ret;
825 }
826
827 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
828 {
829 struct rtl8169_private *tp = netdev_priv(dev);
830 unsigned long flags;
831 int ret;
832
833 spin_lock_irqsave(&tp->lock, flags);
834 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
835 spin_unlock_irqrestore(&tp->lock, flags);
836
837 return ret;
838 }
839
840 static u32 rtl8169_get_rx_csum(struct net_device *dev)
841 {
842 struct rtl8169_private *tp = netdev_priv(dev);
843
844 return tp->cp_cmd & RxChkSum;
845 }
846
847 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
848 {
849 struct rtl8169_private *tp = netdev_priv(dev);
850 void __iomem *ioaddr = tp->mmio_addr;
851 unsigned long flags;
852
853 spin_lock_irqsave(&tp->lock, flags);
854
855 if (data)
856 tp->cp_cmd |= RxChkSum;
857 else
858 tp->cp_cmd &= ~RxChkSum;
859
860 RTL_W16(CPlusCmd, tp->cp_cmd);
861 RTL_R16(CPlusCmd);
862
863 spin_unlock_irqrestore(&tp->lock, flags);
864
865 return 0;
866 }
867
868 #ifdef CONFIG_R8169_VLAN
869
870 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
871 struct sk_buff *skb)
872 {
873 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
874 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
875 }
876
877 static void rtl8169_vlan_rx_register(struct net_device *dev,
878 struct vlan_group *grp)
879 {
880 struct rtl8169_private *tp = netdev_priv(dev);
881 void __iomem *ioaddr = tp->mmio_addr;
882 unsigned long flags;
883
884 spin_lock_irqsave(&tp->lock, flags);
885 tp->vlgrp = grp;
886 if (tp->vlgrp)
887 tp->cp_cmd |= RxVlan;
888 else
889 tp->cp_cmd &= ~RxVlan;
890 RTL_W16(CPlusCmd, tp->cp_cmd);
891 RTL_R16(CPlusCmd);
892 spin_unlock_irqrestore(&tp->lock, flags);
893 }
894
895 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
896 struct sk_buff *skb)
897 {
898 u32 opts2 = le32_to_cpu(desc->opts2);
899 int ret;
900
901 if (tp->vlgrp && (opts2 & RxVlanTag)) {
902 rtl8169_rx_hwaccel_skb(skb, tp->vlgrp,
903 swab16(opts2 & 0xffff));
904 ret = 0;
905 } else
906 ret = -1;
907 desc->opts2 = 0;
908 return ret;
909 }
910
911 #else /* !CONFIG_R8169_VLAN */
912
913 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
914 struct sk_buff *skb)
915 {
916 return 0;
917 }
918
919 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
920 struct sk_buff *skb)
921 {
922 return -1;
923 }
924
925 #endif
926
927 static void rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
928 {
929 struct rtl8169_private *tp = netdev_priv(dev);
930 void __iomem *ioaddr = tp->mmio_addr;
931 u32 status;
932
933 cmd->supported =
934 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
935 cmd->port = PORT_FIBRE;
936 cmd->transceiver = XCVR_INTERNAL;
937
938 status = RTL_R32(TBICSR);
939 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
940 cmd->autoneg = !!(status & TBINwEnable);
941
942 cmd->speed = SPEED_1000;
943 cmd->duplex = DUPLEX_FULL; /* Always set */
944 }
945
946 static void rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
947 {
948 struct rtl8169_private *tp = netdev_priv(dev);
949 void __iomem *ioaddr = tp->mmio_addr;
950 u8 status;
951
952 cmd->supported = SUPPORTED_10baseT_Half |
953 SUPPORTED_10baseT_Full |
954 SUPPORTED_100baseT_Half |
955 SUPPORTED_100baseT_Full |
956 SUPPORTED_1000baseT_Full |
957 SUPPORTED_Autoneg |
958 SUPPORTED_TP;
959
960 cmd->autoneg = 1;
961 cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
962
963 if (tp->phy_auto_nego_reg & ADVERTISE_10HALF)
964 cmd->advertising |= ADVERTISED_10baseT_Half;
965 if (tp->phy_auto_nego_reg & ADVERTISE_10FULL)
966 cmd->advertising |= ADVERTISED_10baseT_Full;
967 if (tp->phy_auto_nego_reg & ADVERTISE_100HALF)
968 cmd->advertising |= ADVERTISED_100baseT_Half;
969 if (tp->phy_auto_nego_reg & ADVERTISE_100FULL)
970 cmd->advertising |= ADVERTISED_100baseT_Full;
971 if (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL)
972 cmd->advertising |= ADVERTISED_1000baseT_Full;
973
974 status = RTL_R8(PHYstatus);
975
976 if (status & _1000bpsF)
977 cmd->speed = SPEED_1000;
978 else if (status & _100bps)
979 cmd->speed = SPEED_100;
980 else if (status & _10bps)
981 cmd->speed = SPEED_10;
982
983 if (status & TxFlowCtrl)
984 cmd->advertising |= ADVERTISED_Asym_Pause;
985 if (status & RxFlowCtrl)
986 cmd->advertising |= ADVERTISED_Pause;
987
988 cmd->duplex = ((status & _1000bpsF) || (status & FullDup)) ?
989 DUPLEX_FULL : DUPLEX_HALF;
990 }
991
992 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
993 {
994 struct rtl8169_private *tp = netdev_priv(dev);
995 unsigned long flags;
996
997 spin_lock_irqsave(&tp->lock, flags);
998
999 tp->get_settings(dev, cmd);
1000
1001 spin_unlock_irqrestore(&tp->lock, flags);
1002 return 0;
1003 }
1004
1005 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1006 void *p)
1007 {
1008 struct rtl8169_private *tp = netdev_priv(dev);
1009 unsigned long flags;
1010
1011 if (regs->len > R8169_REGS_SIZE)
1012 regs->len = R8169_REGS_SIZE;
1013
1014 spin_lock_irqsave(&tp->lock, flags);
1015 memcpy_fromio(p, tp->mmio_addr, regs->len);
1016 spin_unlock_irqrestore(&tp->lock, flags);
1017 }
1018
1019 static u32 rtl8169_get_msglevel(struct net_device *dev)
1020 {
1021 struct rtl8169_private *tp = netdev_priv(dev);
1022
1023 return tp->msg_enable;
1024 }
1025
1026 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1027 {
1028 struct rtl8169_private *tp = netdev_priv(dev);
1029
1030 tp->msg_enable = value;
1031 }
1032
1033 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1034 "tx_packets",
1035 "rx_packets",
1036 "tx_errors",
1037 "rx_errors",
1038 "rx_missed",
1039 "align_errors",
1040 "tx_single_collisions",
1041 "tx_multi_collisions",
1042 "unicast",
1043 "broadcast",
1044 "multicast",
1045 "tx_aborted",
1046 "tx_underrun",
1047 };
1048
1049 struct rtl8169_counters {
1050 u64 tx_packets;
1051 u64 rx_packets;
1052 u64 tx_errors;
1053 u32 rx_errors;
1054 u16 rx_missed;
1055 u16 align_errors;
1056 u32 tx_one_collision;
1057 u32 tx_multi_collision;
1058 u64 rx_unicast;
1059 u64 rx_broadcast;
1060 u32 rx_multicast;
1061 u16 tx_aborted;
1062 u16 tx_underun;
1063 };
1064
1065 static int rtl8169_get_stats_count(struct net_device *dev)
1066 {
1067 return ARRAY_SIZE(rtl8169_gstrings);
1068 }
1069
1070 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1071 struct ethtool_stats *stats, u64 *data)
1072 {
1073 struct rtl8169_private *tp = netdev_priv(dev);
1074 void __iomem *ioaddr = tp->mmio_addr;
1075 struct rtl8169_counters *counters;
1076 dma_addr_t paddr;
1077 u32 cmd;
1078
1079 ASSERT_RTNL();
1080
1081 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1082 if (!counters)
1083 return;
1084
1085 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1086 cmd = (u64)paddr & DMA_32BIT_MASK;
1087 RTL_W32(CounterAddrLow, cmd);
1088 RTL_W32(CounterAddrLow, cmd | CounterDump);
1089
1090 while (RTL_R32(CounterAddrLow) & CounterDump) {
1091 if (msleep_interruptible(1))
1092 break;
1093 }
1094
1095 RTL_W32(CounterAddrLow, 0);
1096 RTL_W32(CounterAddrHigh, 0);
1097
1098 data[0] = le64_to_cpu(counters->tx_packets);
1099 data[1] = le64_to_cpu(counters->rx_packets);
1100 data[2] = le64_to_cpu(counters->tx_errors);
1101 data[3] = le32_to_cpu(counters->rx_errors);
1102 data[4] = le16_to_cpu(counters->rx_missed);
1103 data[5] = le16_to_cpu(counters->align_errors);
1104 data[6] = le32_to_cpu(counters->tx_one_collision);
1105 data[7] = le32_to_cpu(counters->tx_multi_collision);
1106 data[8] = le64_to_cpu(counters->rx_unicast);
1107 data[9] = le64_to_cpu(counters->rx_broadcast);
1108 data[10] = le32_to_cpu(counters->rx_multicast);
1109 data[11] = le16_to_cpu(counters->tx_aborted);
1110 data[12] = le16_to_cpu(counters->tx_underun);
1111
1112 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1113 }
1114
1115 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1116 {
1117 switch(stringset) {
1118 case ETH_SS_STATS:
1119 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1120 break;
1121 }
1122 }
1123
1124
1125 static const struct ethtool_ops rtl8169_ethtool_ops = {
1126 .get_drvinfo = rtl8169_get_drvinfo,
1127 .get_regs_len = rtl8169_get_regs_len,
1128 .get_link = ethtool_op_get_link,
1129 .get_settings = rtl8169_get_settings,
1130 .set_settings = rtl8169_set_settings,
1131 .get_msglevel = rtl8169_get_msglevel,
1132 .set_msglevel = rtl8169_set_msglevel,
1133 .get_rx_csum = rtl8169_get_rx_csum,
1134 .set_rx_csum = rtl8169_set_rx_csum,
1135 .get_tx_csum = ethtool_op_get_tx_csum,
1136 .set_tx_csum = ethtool_op_set_tx_csum,
1137 .get_sg = ethtool_op_get_sg,
1138 .set_sg = ethtool_op_set_sg,
1139 .get_tso = ethtool_op_get_tso,
1140 .set_tso = ethtool_op_set_tso,
1141 .get_regs = rtl8169_get_regs,
1142 .get_wol = rtl8169_get_wol,
1143 .set_wol = rtl8169_set_wol,
1144 .get_strings = rtl8169_get_strings,
1145 .get_stats_count = rtl8169_get_stats_count,
1146 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1147 .get_perm_addr = ethtool_op_get_perm_addr,
1148 };
1149
1150 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg, int bitnum,
1151 int bitval)
1152 {
1153 int val;
1154
1155 val = mdio_read(ioaddr, reg);
1156 val = (bitval == 1) ?
1157 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1158 mdio_write(ioaddr, reg, val & 0xffff);
1159 }
1160
1161 static void rtl8169_get_mac_version(struct rtl8169_private *tp, void __iomem *ioaddr)
1162 {
1163 const struct {
1164 u32 mask;
1165 int mac_version;
1166 } mac_info[] = {
1167 { 0x38800000, RTL_GIGA_MAC_VER_15 },
1168 { 0x38000000, RTL_GIGA_MAC_VER_12 },
1169 { 0x34000000, RTL_GIGA_MAC_VER_13 },
1170 { 0x30800000, RTL_GIGA_MAC_VER_14 },
1171 { 0x30000000, RTL_GIGA_MAC_VER_11 },
1172 { 0x18000000, RTL_GIGA_MAC_VER_05 },
1173 { 0x10000000, RTL_GIGA_MAC_VER_04 },
1174 { 0x04000000, RTL_GIGA_MAC_VER_03 },
1175 { 0x00800000, RTL_GIGA_MAC_VER_02 },
1176 { 0x00000000, RTL_GIGA_MAC_VER_01 } /* Catch-all */
1177 }, *p = mac_info;
1178 u32 reg;
1179
1180 reg = RTL_R32(TxConfig) & 0x7c800000;
1181 while ((reg & p->mask) != p->mask)
1182 p++;
1183 tp->mac_version = p->mac_version;
1184 }
1185
1186 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1187 {
1188 dprintk("mac_version = 0x%02x\n", tp->mac_version);
1189 }
1190
1191 static void rtl8169_get_phy_version(struct rtl8169_private *tp, void __iomem *ioaddr)
1192 {
1193 const struct {
1194 u16 mask;
1195 u16 set;
1196 int phy_version;
1197 } phy_info[] = {
1198 { 0x000f, 0x0002, RTL_GIGA_PHY_VER_G },
1199 { 0x000f, 0x0001, RTL_GIGA_PHY_VER_F },
1200 { 0x000f, 0x0000, RTL_GIGA_PHY_VER_E },
1201 { 0x0000, 0x0000, RTL_GIGA_PHY_VER_D } /* Catch-all */
1202 }, *p = phy_info;
1203 u16 reg;
1204
1205 reg = mdio_read(ioaddr, MII_PHYSID2) & 0xffff;
1206 while ((reg & p->mask) != p->set)
1207 p++;
1208 tp->phy_version = p->phy_version;
1209 }
1210
1211 static void rtl8169_print_phy_version(struct rtl8169_private *tp)
1212 {
1213 struct {
1214 int version;
1215 char *msg;
1216 u32 reg;
1217 } phy_print[] = {
1218 { RTL_GIGA_PHY_VER_G, "RTL_GIGA_PHY_VER_G", 0x0002 },
1219 { RTL_GIGA_PHY_VER_F, "RTL_GIGA_PHY_VER_F", 0x0001 },
1220 { RTL_GIGA_PHY_VER_E, "RTL_GIGA_PHY_VER_E", 0x0000 },
1221 { RTL_GIGA_PHY_VER_D, "RTL_GIGA_PHY_VER_D", 0x0000 },
1222 { 0, NULL, 0x0000 }
1223 }, *p;
1224
1225 for (p = phy_print; p->msg; p++) {
1226 if (tp->phy_version == p->version) {
1227 dprintk("phy_version == %s (%04x)\n", p->msg, p->reg);
1228 return;
1229 }
1230 }
1231 dprintk("phy_version == Unknown\n");
1232 }
1233
1234 static void rtl8169_hw_phy_config(struct net_device *dev)
1235 {
1236 struct rtl8169_private *tp = netdev_priv(dev);
1237 void __iomem *ioaddr = tp->mmio_addr;
1238 struct {
1239 u16 regs[5]; /* Beware of bit-sign propagation */
1240 } phy_magic[5] = { {
1241 { 0x0000, //w 4 15 12 0
1242 0x00a1, //w 3 15 0 00a1
1243 0x0008, //w 2 15 0 0008
1244 0x1020, //w 1 15 0 1020
1245 0x1000 } },{ //w 0 15 0 1000
1246 { 0x7000, //w 4 15 12 7
1247 0xff41, //w 3 15 0 ff41
1248 0xde60, //w 2 15 0 de60
1249 0x0140, //w 1 15 0 0140
1250 0x0077 } },{ //w 0 15 0 0077
1251 { 0xa000, //w 4 15 12 a
1252 0xdf01, //w 3 15 0 df01
1253 0xdf20, //w 2 15 0 df20
1254 0xff95, //w 1 15 0 ff95
1255 0xfa00 } },{ //w 0 15 0 fa00
1256 { 0xb000, //w 4 15 12 b
1257 0xff41, //w 3 15 0 ff41
1258 0xde20, //w 2 15 0 de20
1259 0x0140, //w 1 15 0 0140
1260 0x00bb } },{ //w 0 15 0 00bb
1261 { 0xf000, //w 4 15 12 f
1262 0xdf01, //w 3 15 0 df01
1263 0xdf20, //w 2 15 0 df20
1264 0xff95, //w 1 15 0 ff95
1265 0xbf00 } //w 0 15 0 bf00
1266 }
1267 }, *p = phy_magic;
1268 int i;
1269
1270 rtl8169_print_mac_version(tp);
1271 rtl8169_print_phy_version(tp);
1272
1273 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1274 return;
1275 if (tp->phy_version >= RTL_GIGA_PHY_VER_H)
1276 return;
1277
1278 dprintk("MAC version != 0 && PHY version == 0 or 1\n");
1279 dprintk("Do final_reg2.cfg\n");
1280
1281 /* Shazam ! */
1282
1283 if (tp->mac_version == RTL_GIGA_MAC_VER_04) {
1284 mdio_write(ioaddr, 31, 0x0002);
1285 mdio_write(ioaddr, 1, 0x90d0);
1286 mdio_write(ioaddr, 31, 0x0000);
1287 return;
1288 }
1289
1290 /* phy config for RTL8169s mac_version C chip */
1291 mdio_write(ioaddr, 31, 0x0001); //w 31 2 0 1
1292 mdio_write(ioaddr, 21, 0x1000); //w 21 15 0 1000
1293 mdio_write(ioaddr, 24, 0x65c7); //w 24 15 0 65c7
1294 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1295
1296 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1297 int val, pos = 4;
1298
1299 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1300 mdio_write(ioaddr, pos, val);
1301 while (--pos >= 0)
1302 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1303 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1304 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1305 }
1306 mdio_write(ioaddr, 31, 0x0000); //w 31 2 0 0
1307 }
1308
1309 static void rtl8169_phy_timer(unsigned long __opaque)
1310 {
1311 struct net_device *dev = (struct net_device *)__opaque;
1312 struct rtl8169_private *tp = netdev_priv(dev);
1313 struct timer_list *timer = &tp->timer;
1314 void __iomem *ioaddr = tp->mmio_addr;
1315 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1316
1317 assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1318 assert(tp->phy_version < RTL_GIGA_PHY_VER_H);
1319
1320 if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1321 return;
1322
1323 spin_lock_irq(&tp->lock);
1324
1325 if (tp->phy_reset_pending(ioaddr)) {
1326 /*
1327 * A busy loop could burn quite a few cycles on nowadays CPU.
1328 * Let's delay the execution of the timer for a few ticks.
1329 */
1330 timeout = HZ/10;
1331 goto out_mod_timer;
1332 }
1333
1334 if (tp->link_ok(ioaddr))
1335 goto out_unlock;
1336
1337 if (netif_msg_link(tp))
1338 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1339
1340 tp->phy_reset_enable(ioaddr);
1341
1342 out_mod_timer:
1343 mod_timer(timer, jiffies + timeout);
1344 out_unlock:
1345 spin_unlock_irq(&tp->lock);
1346 }
1347
1348 static inline void rtl8169_delete_timer(struct net_device *dev)
1349 {
1350 struct rtl8169_private *tp = netdev_priv(dev);
1351 struct timer_list *timer = &tp->timer;
1352
1353 if ((tp->mac_version <= RTL_GIGA_MAC_VER_01) ||
1354 (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1355 return;
1356
1357 del_timer_sync(timer);
1358 }
1359
1360 static inline void rtl8169_request_timer(struct net_device *dev)
1361 {
1362 struct rtl8169_private *tp = netdev_priv(dev);
1363 struct timer_list *timer = &tp->timer;
1364
1365 if ((tp->mac_version <= RTL_GIGA_MAC_VER_01) ||
1366 (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1367 return;
1368
1369 mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1370 }
1371
1372 #ifdef CONFIG_NET_POLL_CONTROLLER
1373 /*
1374 * Polling 'interrupt' - used by things like netconsole to send skbs
1375 * without having to re-enable interrupts. It's not called while
1376 * the interrupt routine is executing.
1377 */
1378 static void rtl8169_netpoll(struct net_device *dev)
1379 {
1380 struct rtl8169_private *tp = netdev_priv(dev);
1381 struct pci_dev *pdev = tp->pci_dev;
1382
1383 disable_irq(pdev->irq);
1384 rtl8169_interrupt(pdev->irq, dev);
1385 enable_irq(pdev->irq);
1386 }
1387 #endif
1388
1389 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1390 void __iomem *ioaddr)
1391 {
1392 iounmap(ioaddr);
1393 pci_release_regions(pdev);
1394 pci_disable_device(pdev);
1395 free_netdev(dev);
1396 }
1397
1398 static void rtl8169_phy_reset(struct net_device *dev,
1399 struct rtl8169_private *tp)
1400 {
1401 void __iomem *ioaddr = tp->mmio_addr;
1402 int i;
1403
1404 tp->phy_reset_enable(ioaddr);
1405 for (i = 0; i < 100; i++) {
1406 if (!tp->phy_reset_pending(ioaddr))
1407 return;
1408 msleep(1);
1409 }
1410 if (netif_msg_link(tp))
1411 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1412 }
1413
1414 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1415 {
1416 void __iomem *ioaddr = tp->mmio_addr;
1417 static int board_idx = -1;
1418 u8 autoneg, duplex;
1419 u16 speed;
1420
1421 board_idx++;
1422
1423 rtl8169_hw_phy_config(dev);
1424
1425 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1426 RTL_W8(0x82, 0x01);
1427
1428 if (tp->mac_version < RTL_GIGA_MAC_VER_03) {
1429 dprintk("Set PCI Latency=0x40\n");
1430 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1431 }
1432
1433 if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1434 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1435 RTL_W8(0x82, 0x01);
1436 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1437 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1438 }
1439
1440 rtl8169_link_option(board_idx, &autoneg, &speed, &duplex);
1441
1442 rtl8169_phy_reset(dev, tp);
1443
1444 rtl8169_set_speed(dev, autoneg, speed, duplex);
1445
1446 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1447 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1448 }
1449
1450 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1451 {
1452 struct rtl8169_private *tp = netdev_priv(dev);
1453 struct mii_ioctl_data *data = if_mii(ifr);
1454
1455 if (!netif_running(dev))
1456 return -ENODEV;
1457
1458 switch (cmd) {
1459 case SIOCGMIIPHY:
1460 data->phy_id = 32; /* Internal PHY */
1461 return 0;
1462
1463 case SIOCGMIIREG:
1464 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1465 return 0;
1466
1467 case SIOCSMIIREG:
1468 if (!capable(CAP_NET_ADMIN))
1469 return -EPERM;
1470 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1471 return 0;
1472 }
1473 return -EOPNOTSUPP;
1474 }
1475
1476 static int __devinit
1477 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1478 {
1479 const unsigned int region = rtl_cfg_info[ent->driver_data].region;
1480 struct rtl8169_private *tp;
1481 struct net_device *dev;
1482 void __iomem *ioaddr;
1483 unsigned int pm_cap;
1484 int i, rc;
1485
1486 if (netif_msg_drv(&debug)) {
1487 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1488 MODULENAME, RTL8169_VERSION);
1489 }
1490
1491 dev = alloc_etherdev(sizeof (*tp));
1492 if (!dev) {
1493 if (netif_msg_drv(&debug))
1494 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1495 rc = -ENOMEM;
1496 goto out;
1497 }
1498
1499 SET_MODULE_OWNER(dev);
1500 SET_NETDEV_DEV(dev, &pdev->dev);
1501 tp = netdev_priv(dev);
1502 tp->dev = dev;
1503 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1504
1505 /* enable device (incl. PCI PM wakeup and hotplug setup) */
1506 rc = pci_enable_device(pdev);
1507 if (rc < 0) {
1508 if (netif_msg_probe(tp))
1509 dev_err(&pdev->dev, "enable failure\n");
1510 goto err_out_free_dev_1;
1511 }
1512
1513 rc = pci_set_mwi(pdev);
1514 if (rc < 0)
1515 goto err_out_disable_2;
1516
1517 /* save power state before pci_enable_device overwrites it */
1518 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
1519 if (pm_cap) {
1520 u16 pwr_command, acpi_idle_state;
1521
1522 pci_read_config_word(pdev, pm_cap + PCI_PM_CTRL, &pwr_command);
1523 acpi_idle_state = pwr_command & PCI_PM_CTRL_STATE_MASK;
1524 } else {
1525 if (netif_msg_probe(tp)) {
1526 dev_err(&pdev->dev,
1527 "PowerManagement capability not found.\n");
1528 }
1529 }
1530
1531 /* make sure PCI base addr 1 is MMIO */
1532 if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1533 if (netif_msg_probe(tp)) {
1534 dev_err(&pdev->dev,
1535 "region #%d not an MMIO resource, aborting\n",
1536 region);
1537 }
1538 rc = -ENODEV;
1539 goto err_out_mwi_3;
1540 }
1541
1542 /* check for weird/broken PCI region reporting */
1543 if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1544 if (netif_msg_probe(tp)) {
1545 dev_err(&pdev->dev,
1546 "Invalid PCI region size(s), aborting\n");
1547 }
1548 rc = -ENODEV;
1549 goto err_out_mwi_3;
1550 }
1551
1552 rc = pci_request_regions(pdev, MODULENAME);
1553 if (rc < 0) {
1554 if (netif_msg_probe(tp))
1555 dev_err(&pdev->dev, "could not request regions.\n");
1556 goto err_out_mwi_3;
1557 }
1558
1559 tp->cp_cmd = PCIMulRW | RxChkSum;
1560
1561 if ((sizeof(dma_addr_t) > 4) &&
1562 !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1563 tp->cp_cmd |= PCIDAC;
1564 dev->features |= NETIF_F_HIGHDMA;
1565 } else {
1566 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1567 if (rc < 0) {
1568 if (netif_msg_probe(tp)) {
1569 dev_err(&pdev->dev,
1570 "DMA configuration failed.\n");
1571 }
1572 goto err_out_free_res_4;
1573 }
1574 }
1575
1576 pci_set_master(pdev);
1577
1578 /* ioremap MMIO region */
1579 ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1580 if (!ioaddr) {
1581 if (netif_msg_probe(tp))
1582 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1583 rc = -EIO;
1584 goto err_out_free_res_4;
1585 }
1586
1587 /* Unneeded ? Don't mess with Mrs. Murphy. */
1588 rtl8169_irq_mask_and_ack(ioaddr);
1589
1590 /* Soft reset the chip. */
1591 RTL_W8(ChipCmd, CmdReset);
1592
1593 /* Check that the chip has finished the reset. */
1594 for (i = 100; i > 0; i--) {
1595 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1596 break;
1597 msleep_interruptible(1);
1598 }
1599
1600 /* Identify chip attached to board */
1601 rtl8169_get_mac_version(tp, ioaddr);
1602 rtl8169_get_phy_version(tp, ioaddr);
1603
1604 rtl8169_print_mac_version(tp);
1605 rtl8169_print_phy_version(tp);
1606
1607 for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--) {
1608 if (tp->mac_version == rtl_chip_info[i].mac_version)
1609 break;
1610 }
1611 if (i < 0) {
1612 /* Unknown chip: assume array element #0, original RTL-8169 */
1613 if (netif_msg_probe(tp)) {
1614 dev_printk(KERN_DEBUG, &pdev->dev,
1615 "unknown chip version, assuming %s\n",
1616 rtl_chip_info[0].name);
1617 }
1618 i++;
1619 }
1620 tp->chipset = i;
1621
1622 RTL_W8(Cfg9346, Cfg9346_Unlock);
1623 RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1624 RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1625 RTL_W8(Cfg9346, Cfg9346_Lock);
1626
1627 if (RTL_R8(PHYstatus) & TBI_Enable) {
1628 tp->set_speed = rtl8169_set_speed_tbi;
1629 tp->get_settings = rtl8169_gset_tbi;
1630 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1631 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1632 tp->link_ok = rtl8169_tbi_link_ok;
1633
1634 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1635 } else {
1636 tp->set_speed = rtl8169_set_speed_xmii;
1637 tp->get_settings = rtl8169_gset_xmii;
1638 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1639 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1640 tp->link_ok = rtl8169_xmii_link_ok;
1641
1642 dev->do_ioctl = rtl8169_ioctl;
1643 }
1644
1645 /* Get MAC address. FIXME: read EEPROM */
1646 for (i = 0; i < MAC_ADDR_LEN; i++)
1647 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1648 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1649
1650 dev->open = rtl8169_open;
1651 dev->hard_start_xmit = rtl8169_start_xmit;
1652 dev->get_stats = rtl8169_get_stats;
1653 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1654 dev->stop = rtl8169_close;
1655 dev->tx_timeout = rtl8169_tx_timeout;
1656 dev->set_multicast_list = rtl_set_rx_mode;
1657 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1658 dev->irq = pdev->irq;
1659 dev->base_addr = (unsigned long) ioaddr;
1660 dev->change_mtu = rtl8169_change_mtu;
1661
1662 #ifdef CONFIG_R8169_NAPI
1663 dev->poll = rtl8169_poll;
1664 dev->weight = R8169_NAPI_WEIGHT;
1665 #endif
1666
1667 #ifdef CONFIG_R8169_VLAN
1668 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1669 dev->vlan_rx_register = rtl8169_vlan_rx_register;
1670 #endif
1671
1672 #ifdef CONFIG_NET_POLL_CONTROLLER
1673 dev->poll_controller = rtl8169_netpoll;
1674 #endif
1675
1676 tp->intr_mask = 0xffff;
1677 tp->pci_dev = pdev;
1678 tp->mmio_addr = ioaddr;
1679 tp->align = rtl_cfg_info[ent->driver_data].align;
1680
1681 init_timer(&tp->timer);
1682 tp->timer.data = (unsigned long) dev;
1683 tp->timer.function = rtl8169_phy_timer;
1684
1685 tp->hw_start = rtl_cfg_info[ent->driver_data].hw_start;
1686
1687 spin_lock_init(&tp->lock);
1688
1689 rc = register_netdev(dev);
1690 if (rc < 0)
1691 goto err_out_unmap_5;
1692
1693 pci_set_drvdata(pdev, dev);
1694
1695 if (netif_msg_probe(tp)) {
1696 printk(KERN_INFO "%s: %s at 0x%lx, "
1697 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1698 "IRQ %d\n",
1699 dev->name,
1700 rtl_chip_info[tp->chipset].name,
1701 dev->base_addr,
1702 dev->dev_addr[0], dev->dev_addr[1],
1703 dev->dev_addr[2], dev->dev_addr[3],
1704 dev->dev_addr[4], dev->dev_addr[5], dev->irq);
1705 }
1706
1707 rtl8169_init_phy(dev, tp);
1708
1709 out:
1710 return rc;
1711
1712 err_out_unmap_5:
1713 iounmap(ioaddr);
1714 err_out_free_res_4:
1715 pci_release_regions(pdev);
1716 err_out_mwi_3:
1717 pci_clear_mwi(pdev);
1718 err_out_disable_2:
1719 pci_disable_device(pdev);
1720 err_out_free_dev_1:
1721 free_netdev(dev);
1722 goto out;
1723 }
1724
1725 static void __devexit
1726 rtl8169_remove_one(struct pci_dev *pdev)
1727 {
1728 struct net_device *dev = pci_get_drvdata(pdev);
1729 struct rtl8169_private *tp = netdev_priv(dev);
1730
1731 assert(dev != NULL);
1732 assert(tp != NULL);
1733
1734 flush_scheduled_work();
1735
1736 unregister_netdev(dev);
1737 rtl8169_release_board(pdev, dev, tp->mmio_addr);
1738 pci_set_drvdata(pdev, NULL);
1739 }
1740
1741 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
1742 struct net_device *dev)
1743 {
1744 unsigned int mtu = dev->mtu;
1745
1746 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1747 }
1748
1749 static int rtl8169_open(struct net_device *dev)
1750 {
1751 struct rtl8169_private *tp = netdev_priv(dev);
1752 struct pci_dev *pdev = tp->pci_dev;
1753 int retval = -ENOMEM;
1754
1755
1756 rtl8169_set_rxbufsize(tp, dev);
1757
1758 /*
1759 * Rx and Tx desscriptors needs 256 bytes alignment.
1760 * pci_alloc_consistent provides more.
1761 */
1762 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
1763 &tp->TxPhyAddr);
1764 if (!tp->TxDescArray)
1765 goto out;
1766
1767 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
1768 &tp->RxPhyAddr);
1769 if (!tp->RxDescArray)
1770 goto err_free_tx_0;
1771
1772 retval = rtl8169_init_ring(dev);
1773 if (retval < 0)
1774 goto err_free_rx_1;
1775
1776 INIT_DELAYED_WORK(&tp->task, NULL);
1777
1778 smp_mb();
1779
1780 retval = request_irq(dev->irq, rtl8169_interrupt, IRQF_SHARED,
1781 dev->name, dev);
1782 if (retval < 0)
1783 goto err_release_ring_2;
1784
1785 rtl_hw_start(dev);
1786
1787 rtl8169_request_timer(dev);
1788
1789 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
1790 out:
1791 return retval;
1792
1793 err_release_ring_2:
1794 rtl8169_rx_clear(tp);
1795 err_free_rx_1:
1796 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
1797 tp->RxPhyAddr);
1798 err_free_tx_0:
1799 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
1800 tp->TxPhyAddr);
1801 goto out;
1802 }
1803
1804 static void rtl8169_hw_reset(void __iomem *ioaddr)
1805 {
1806 /* Disable interrupts */
1807 rtl8169_irq_mask_and_ack(ioaddr);
1808
1809 /* Reset the chipset */
1810 RTL_W8(ChipCmd, CmdReset);
1811
1812 /* PCI commit */
1813 RTL_R8(ChipCmd);
1814 }
1815
1816 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
1817 {
1818 void __iomem *ioaddr = tp->mmio_addr;
1819 u32 cfg = rtl8169_rx_config;
1820
1821 cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1822 RTL_W32(RxConfig, cfg);
1823
1824 /* Set DMA burst size and Interframe Gap Time */
1825 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
1826 (InterFrameGap << TxInterFrameGapShift));
1827 }
1828
1829 static void rtl_hw_start(struct net_device *dev)
1830 {
1831 struct rtl8169_private *tp = netdev_priv(dev);
1832 void __iomem *ioaddr = tp->mmio_addr;
1833 u32 i;
1834
1835 /* Soft reset the chip. */
1836 RTL_W8(ChipCmd, CmdReset);
1837
1838 /* Check that the chip has finished the reset. */
1839 for (i = 100; i > 0; i--) {
1840 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1841 break;
1842 msleep_interruptible(1);
1843 }
1844
1845 tp->hw_start(dev);
1846
1847 /* Enable all known interrupts by setting the interrupt mask. */
1848 RTL_W16(IntrMask, rtl8169_intr_mask);
1849
1850 netif_start_queue(dev);
1851 }
1852
1853
1854 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
1855 void __iomem *ioaddr)
1856 {
1857 /*
1858 * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
1859 * register to be written before TxDescAddrLow to work.
1860 * Switching from MMIO to I/O access fixes the issue as well.
1861 */
1862 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
1863 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
1864 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
1865 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
1866 }
1867
1868 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
1869 {
1870 u16 cmd;
1871
1872 cmd = RTL_R16(CPlusCmd);
1873 RTL_W16(CPlusCmd, cmd);
1874 return cmd;
1875 }
1876
1877 static void rtl_set_rx_max_size(void __iomem *ioaddr)
1878 {
1879 /* Low hurts. Let's disable the filtering. */
1880 RTL_W16(RxMaxSize, 16383);
1881 }
1882
1883 static void rtl_hw_start_8169(struct net_device *dev)
1884 {
1885 struct rtl8169_private *tp = netdev_priv(dev);
1886 void __iomem *ioaddr = tp->mmio_addr;
1887 struct pci_dev *pdev = tp->pci_dev;
1888 u16 cmd;
1889
1890 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
1891 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
1892 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
1893 }
1894
1895 if (tp->mac_version == RTL_GIGA_MAC_VER_13) {
1896 pci_write_config_word(pdev, 0x68, 0x00);
1897 pci_write_config_word(pdev, 0x69, 0x08);
1898 }
1899
1900 /* Undocumented stuff. */
1901 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
1902 /* Realtek's r1000_n.c driver uses '&& 0x01' here. Well... */
1903 if ((RTL_R8(Config2) & 0x07) & 0x01)
1904 RTL_W32(0x7c, 0x0007ffff);
1905
1906 RTL_W32(0x7c, 0x0007ff00);
1907
1908 pci_read_config_word(pdev, PCI_COMMAND, &cmd);
1909 cmd = cmd & 0xef;
1910 pci_write_config_word(pdev, PCI_COMMAND, cmd);
1911 }
1912
1913 RTL_W8(Cfg9346, Cfg9346_Unlock);
1914 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
1915 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
1916 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
1917 (tp->mac_version == RTL_GIGA_MAC_VER_04))
1918 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1919
1920 RTL_W8(EarlyTxThres, EarlyTxThld);
1921
1922 rtl_set_rx_max_size(ioaddr);
1923
1924 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
1925 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
1926 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
1927 (tp->mac_version == RTL_GIGA_MAC_VER_04))
1928 rtl_set_rx_tx_config_registers(tp);
1929
1930 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
1931
1932 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
1933 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
1934 dprintk(KERN_INFO PFX "Set MAC Reg C+CR Offset 0xE0. "
1935 "Bit-3 and bit-14 MUST be 1\n");
1936 tp->cp_cmd |= (1 << 14);
1937 }
1938
1939 RTL_W16(CPlusCmd, tp->cp_cmd);
1940
1941 /*
1942 * Undocumented corner. Supposedly:
1943 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
1944 */
1945 RTL_W16(IntrMitigate, 0x0000);
1946
1947 rtl_set_rx_tx_desc_registers(tp, ioaddr);
1948
1949 if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
1950 (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
1951 (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
1952 (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
1953 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1954 rtl_set_rx_tx_config_registers(tp);
1955 }
1956
1957 RTL_W8(Cfg9346, Cfg9346_Lock);
1958
1959 /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
1960 RTL_R8(IntrMask);
1961
1962 RTL_W32(RxMissed, 0);
1963
1964 rtl_set_rx_mode(dev);
1965
1966 /* no early-rx interrupts */
1967 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
1968 }
1969
1970 static void rtl_hw_start_8168(struct net_device *dev)
1971 {
1972 struct rtl8169_private *tp = netdev_priv(dev);
1973 void __iomem *ioaddr = tp->mmio_addr;
1974
1975 RTL_W8(Cfg9346, Cfg9346_Unlock);
1976
1977 RTL_W8(EarlyTxThres, EarlyTxThld);
1978
1979 rtl_set_rx_max_size(ioaddr);
1980
1981 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
1982
1983 RTL_W16(CPlusCmd, tp->cp_cmd);
1984
1985 RTL_W16(IntrMitigate, 0x0000);
1986
1987 rtl_set_rx_tx_desc_registers(tp, ioaddr);
1988
1989 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1990 rtl_set_rx_tx_config_registers(tp);
1991
1992 RTL_W8(Cfg9346, Cfg9346_Lock);
1993
1994 RTL_R8(IntrMask);
1995
1996 RTL_W32(RxMissed, 0);
1997
1998 rtl_set_rx_mode(dev);
1999
2000 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2001 }
2002
2003 static void rtl_hw_start_8101(struct net_device *dev)
2004 {
2005 rtl_hw_start_8169(dev);
2006 }
2007
2008 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2009 {
2010 struct rtl8169_private *tp = netdev_priv(dev);
2011 int ret = 0;
2012
2013 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2014 return -EINVAL;
2015
2016 dev->mtu = new_mtu;
2017
2018 if (!netif_running(dev))
2019 goto out;
2020
2021 rtl8169_down(dev);
2022
2023 rtl8169_set_rxbufsize(tp, dev);
2024
2025 ret = rtl8169_init_ring(dev);
2026 if (ret < 0)
2027 goto out;
2028
2029 netif_poll_enable(dev);
2030
2031 rtl_hw_start(dev);
2032
2033 rtl8169_request_timer(dev);
2034
2035 out:
2036 return ret;
2037 }
2038
2039 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2040 {
2041 desc->addr = 0x0badbadbadbadbadull;
2042 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2043 }
2044
2045 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2046 struct sk_buff **sk_buff, struct RxDesc *desc)
2047 {
2048 struct pci_dev *pdev = tp->pci_dev;
2049
2050 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2051 PCI_DMA_FROMDEVICE);
2052 dev_kfree_skb(*sk_buff);
2053 *sk_buff = NULL;
2054 rtl8169_make_unusable_by_asic(desc);
2055 }
2056
2057 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2058 {
2059 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2060
2061 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2062 }
2063
2064 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2065 u32 rx_buf_sz)
2066 {
2067 desc->addr = cpu_to_le64(mapping);
2068 wmb();
2069 rtl8169_mark_to_asic(desc, rx_buf_sz);
2070 }
2071
2072 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2073 struct net_device *dev,
2074 struct RxDesc *desc, int rx_buf_sz,
2075 unsigned int align)
2076 {
2077 struct sk_buff *skb;
2078 dma_addr_t mapping;
2079
2080 skb = netdev_alloc_skb(dev, rx_buf_sz + align);
2081 if (!skb)
2082 goto err_out;
2083
2084 skb_reserve(skb, (align - 1) & (unsigned long)skb->data);
2085
2086 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2087 PCI_DMA_FROMDEVICE);
2088
2089 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2090 out:
2091 return skb;
2092
2093 err_out:
2094 rtl8169_make_unusable_by_asic(desc);
2095 goto out;
2096 }
2097
2098 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2099 {
2100 int i;
2101
2102 for (i = 0; i < NUM_RX_DESC; i++) {
2103 if (tp->Rx_skbuff[i]) {
2104 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2105 tp->RxDescArray + i);
2106 }
2107 }
2108 }
2109
2110 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2111 u32 start, u32 end)
2112 {
2113 u32 cur;
2114
2115 for (cur = start; end - cur != 0; cur++) {
2116 struct sk_buff *skb;
2117 unsigned int i = cur % NUM_RX_DESC;
2118
2119 WARN_ON((s32)(end - cur) < 0);
2120
2121 if (tp->Rx_skbuff[i])
2122 continue;
2123
2124 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2125 tp->RxDescArray + i,
2126 tp->rx_buf_sz, tp->align);
2127 if (!skb)
2128 break;
2129
2130 tp->Rx_skbuff[i] = skb;
2131 }
2132 return cur - start;
2133 }
2134
2135 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2136 {
2137 desc->opts1 |= cpu_to_le32(RingEnd);
2138 }
2139
2140 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2141 {
2142 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2143 }
2144
2145 static int rtl8169_init_ring(struct net_device *dev)
2146 {
2147 struct rtl8169_private *tp = netdev_priv(dev);
2148
2149 rtl8169_init_ring_indexes(tp);
2150
2151 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2152 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2153
2154 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2155 goto err_out;
2156
2157 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2158
2159 return 0;
2160
2161 err_out:
2162 rtl8169_rx_clear(tp);
2163 return -ENOMEM;
2164 }
2165
2166 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2167 struct TxDesc *desc)
2168 {
2169 unsigned int len = tx_skb->len;
2170
2171 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2172 desc->opts1 = 0x00;
2173 desc->opts2 = 0x00;
2174 desc->addr = 0x00;
2175 tx_skb->len = 0;
2176 }
2177
2178 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2179 {
2180 unsigned int i;
2181
2182 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2183 unsigned int entry = i % NUM_TX_DESC;
2184 struct ring_info *tx_skb = tp->tx_skb + entry;
2185 unsigned int len = tx_skb->len;
2186
2187 if (len) {
2188 struct sk_buff *skb = tx_skb->skb;
2189
2190 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2191 tp->TxDescArray + entry);
2192 if (skb) {
2193 dev_kfree_skb(skb);
2194 tx_skb->skb = NULL;
2195 }
2196 tp->stats.tx_dropped++;
2197 }
2198 }
2199 tp->cur_tx = tp->dirty_tx = 0;
2200 }
2201
2202 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
2203 {
2204 struct rtl8169_private *tp = netdev_priv(dev);
2205
2206 PREPARE_DELAYED_WORK(&tp->task, task);
2207 schedule_delayed_work(&tp->task, 4);
2208 }
2209
2210 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2211 {
2212 struct rtl8169_private *tp = netdev_priv(dev);
2213 void __iomem *ioaddr = tp->mmio_addr;
2214
2215 synchronize_irq(dev->irq);
2216
2217 /* Wait for any pending NAPI task to complete */
2218 netif_poll_disable(dev);
2219
2220 rtl8169_irq_mask_and_ack(ioaddr);
2221
2222 netif_poll_enable(dev);
2223 }
2224
2225 static void rtl8169_reinit_task(struct work_struct *work)
2226 {
2227 struct rtl8169_private *tp =
2228 container_of(work, struct rtl8169_private, task.work);
2229 struct net_device *dev = tp->dev;
2230 int ret;
2231
2232 rtnl_lock();
2233
2234 if (!netif_running(dev))
2235 goto out_unlock;
2236
2237 rtl8169_wait_for_quiescence(dev);
2238 rtl8169_close(dev);
2239
2240 ret = rtl8169_open(dev);
2241 if (unlikely(ret < 0)) {
2242 if (net_ratelimit()) {
2243 struct rtl8169_private *tp = netdev_priv(dev);
2244
2245 if (netif_msg_drv(tp)) {
2246 printk(PFX KERN_ERR
2247 "%s: reinit failure (status = %d)."
2248 " Rescheduling.\n", dev->name, ret);
2249 }
2250 }
2251 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2252 }
2253
2254 out_unlock:
2255 rtnl_unlock();
2256 }
2257
2258 static void rtl8169_reset_task(struct work_struct *work)
2259 {
2260 struct rtl8169_private *tp =
2261 container_of(work, struct rtl8169_private, task.work);
2262 struct net_device *dev = tp->dev;
2263
2264 rtnl_lock();
2265
2266 if (!netif_running(dev))
2267 goto out_unlock;
2268
2269 rtl8169_wait_for_quiescence(dev);
2270
2271 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr);
2272 rtl8169_tx_clear(tp);
2273
2274 if (tp->dirty_rx == tp->cur_rx) {
2275 rtl8169_init_ring_indexes(tp);
2276 rtl_hw_start(dev);
2277 netif_wake_queue(dev);
2278 } else {
2279 if (net_ratelimit()) {
2280 struct rtl8169_private *tp = netdev_priv(dev);
2281
2282 if (netif_msg_intr(tp)) {
2283 printk(PFX KERN_EMERG
2284 "%s: Rx buffers shortage\n", dev->name);
2285 }
2286 }
2287 rtl8169_schedule_work(dev, rtl8169_reset_task);
2288 }
2289
2290 out_unlock:
2291 rtnl_unlock();
2292 }
2293
2294 static void rtl8169_tx_timeout(struct net_device *dev)
2295 {
2296 struct rtl8169_private *tp = netdev_priv(dev);
2297
2298 rtl8169_hw_reset(tp->mmio_addr);
2299
2300 /* Let's wait a bit while any (async) irq lands on */
2301 rtl8169_schedule_work(dev, rtl8169_reset_task);
2302 }
2303
2304 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2305 u32 opts1)
2306 {
2307 struct skb_shared_info *info = skb_shinfo(skb);
2308 unsigned int cur_frag, entry;
2309 struct TxDesc *txd;
2310
2311 entry = tp->cur_tx;
2312 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2313 skb_frag_t *frag = info->frags + cur_frag;
2314 dma_addr_t mapping;
2315 u32 status, len;
2316 void *addr;
2317
2318 entry = (entry + 1) % NUM_TX_DESC;
2319
2320 txd = tp->TxDescArray + entry;
2321 len = frag->size;
2322 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2323 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2324
2325 /* anti gcc 2.95.3 bugware (sic) */
2326 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2327
2328 txd->opts1 = cpu_to_le32(status);
2329 txd->addr = cpu_to_le64(mapping);
2330
2331 tp->tx_skb[entry].len = len;
2332 }
2333
2334 if (cur_frag) {
2335 tp->tx_skb[entry].skb = skb;
2336 txd->opts1 |= cpu_to_le32(LastFrag);
2337 }
2338
2339 return cur_frag;
2340 }
2341
2342 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2343 {
2344 if (dev->features & NETIF_F_TSO) {
2345 u32 mss = skb_shinfo(skb)->gso_size;
2346
2347 if (mss)
2348 return LargeSend | ((mss & MSSMask) << MSSShift);
2349 }
2350 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2351 const struct iphdr *ip = ip_hdr(skb);
2352
2353 if (ip->protocol == IPPROTO_TCP)
2354 return IPCS | TCPCS;
2355 else if (ip->protocol == IPPROTO_UDP)
2356 return IPCS | UDPCS;
2357 WARN_ON(1); /* we need a WARN() */
2358 }
2359 return 0;
2360 }
2361
2362 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2363 {
2364 struct rtl8169_private *tp = netdev_priv(dev);
2365 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2366 struct TxDesc *txd = tp->TxDescArray + entry;
2367 void __iomem *ioaddr = tp->mmio_addr;
2368 dma_addr_t mapping;
2369 u32 status, len;
2370 u32 opts1;
2371 int ret = NETDEV_TX_OK;
2372
2373 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2374 if (netif_msg_drv(tp)) {
2375 printk(KERN_ERR
2376 "%s: BUG! Tx Ring full when queue awake!\n",
2377 dev->name);
2378 }
2379 goto err_stop;
2380 }
2381
2382 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2383 goto err_stop;
2384
2385 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2386
2387 frags = rtl8169_xmit_frags(tp, skb, opts1);
2388 if (frags) {
2389 len = skb_headlen(skb);
2390 opts1 |= FirstFrag;
2391 } else {
2392 len = skb->len;
2393
2394 if (unlikely(len < ETH_ZLEN)) {
2395 if (skb_padto(skb, ETH_ZLEN))
2396 goto err_update_stats;
2397 len = ETH_ZLEN;
2398 }
2399
2400 opts1 |= FirstFrag | LastFrag;
2401 tp->tx_skb[entry].skb = skb;
2402 }
2403
2404 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2405
2406 tp->tx_skb[entry].len = len;
2407 txd->addr = cpu_to_le64(mapping);
2408 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2409
2410 wmb();
2411
2412 /* anti gcc 2.95.3 bugware (sic) */
2413 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2414 txd->opts1 = cpu_to_le32(status);
2415
2416 dev->trans_start = jiffies;
2417
2418 tp->cur_tx += frags + 1;
2419
2420 smp_wmb();
2421
2422 RTL_W8(TxPoll, 0x40); /* set polling bit */
2423
2424 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2425 netif_stop_queue(dev);
2426 smp_rmb();
2427 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2428 netif_wake_queue(dev);
2429 }
2430
2431 out:
2432 return ret;
2433
2434 err_stop:
2435 netif_stop_queue(dev);
2436 ret = NETDEV_TX_BUSY;
2437 err_update_stats:
2438 tp->stats.tx_dropped++;
2439 goto out;
2440 }
2441
2442 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2443 {
2444 struct rtl8169_private *tp = netdev_priv(dev);
2445 struct pci_dev *pdev = tp->pci_dev;
2446 void __iomem *ioaddr = tp->mmio_addr;
2447 u16 pci_status, pci_cmd;
2448
2449 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2450 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2451
2452 if (netif_msg_intr(tp)) {
2453 printk(KERN_ERR
2454 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2455 dev->name, pci_cmd, pci_status);
2456 }
2457
2458 /*
2459 * The recovery sequence below admits a very elaborated explanation:
2460 * - it seems to work;
2461 * - I did not see what else could be done;
2462 * - it makes iop3xx happy.
2463 *
2464 * Feel free to adjust to your needs.
2465 */
2466 if (pdev->broken_parity_status)
2467 pci_cmd &= ~PCI_COMMAND_PARITY;
2468 else
2469 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
2470
2471 pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
2472
2473 pci_write_config_word(pdev, PCI_STATUS,
2474 pci_status & (PCI_STATUS_DETECTED_PARITY |
2475 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2476 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2477
2478 /* The infamous DAC f*ckup only happens at boot time */
2479 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2480 if (netif_msg_intr(tp))
2481 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2482 tp->cp_cmd &= ~PCIDAC;
2483 RTL_W16(CPlusCmd, tp->cp_cmd);
2484 dev->features &= ~NETIF_F_HIGHDMA;
2485 }
2486
2487 rtl8169_hw_reset(ioaddr);
2488
2489 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2490 }
2491
2492 static void
2493 rtl8169_tx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2494 void __iomem *ioaddr)
2495 {
2496 unsigned int dirty_tx, tx_left;
2497
2498 assert(dev != NULL);
2499 assert(tp != NULL);
2500 assert(ioaddr != NULL);
2501
2502 dirty_tx = tp->dirty_tx;
2503 smp_rmb();
2504 tx_left = tp->cur_tx - dirty_tx;
2505
2506 while (tx_left > 0) {
2507 unsigned int entry = dirty_tx % NUM_TX_DESC;
2508 struct ring_info *tx_skb = tp->tx_skb + entry;
2509 u32 len = tx_skb->len;
2510 u32 status;
2511
2512 rmb();
2513 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2514 if (status & DescOwn)
2515 break;
2516
2517 tp->stats.tx_bytes += len;
2518 tp->stats.tx_packets++;
2519
2520 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
2521
2522 if (status & LastFrag) {
2523 dev_kfree_skb_irq(tx_skb->skb);
2524 tx_skb->skb = NULL;
2525 }
2526 dirty_tx++;
2527 tx_left--;
2528 }
2529
2530 if (tp->dirty_tx != dirty_tx) {
2531 tp->dirty_tx = dirty_tx;
2532 smp_wmb();
2533 if (netif_queue_stopped(dev) &&
2534 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
2535 netif_wake_queue(dev);
2536 }
2537 }
2538 }
2539
2540 static inline int rtl8169_fragmented_frame(u32 status)
2541 {
2542 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2543 }
2544
2545 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2546 {
2547 u32 opts1 = le32_to_cpu(desc->opts1);
2548 u32 status = opts1 & RxProtoMask;
2549
2550 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
2551 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
2552 ((status == RxProtoIP) && !(opts1 & IPFail)))
2553 skb->ip_summed = CHECKSUM_UNNECESSARY;
2554 else
2555 skb->ip_summed = CHECKSUM_NONE;
2556 }
2557
2558 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
2559 struct pci_dev *pdev, dma_addr_t addr,
2560 unsigned int align)
2561 {
2562 struct sk_buff *skb;
2563 bool done = false;
2564
2565 if (pkt_size >= rx_copybreak)
2566 goto out;
2567
2568 skb = dev_alloc_skb(pkt_size + align);
2569 if (!skb)
2570 goto out;
2571
2572 pci_dma_sync_single_for_cpu(pdev, addr, pkt_size, PCI_DMA_FROMDEVICE);
2573 skb_reserve(skb, (align - 1) & (unsigned long)skb->data);
2574 skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
2575 *sk_buff = skb;
2576 done = true;
2577 out:
2578 return done;
2579 }
2580
2581 static int
2582 rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2583 void __iomem *ioaddr)
2584 {
2585 unsigned int cur_rx, rx_left;
2586 unsigned int delta, count;
2587
2588 assert(dev != NULL);
2589 assert(tp != NULL);
2590 assert(ioaddr != NULL);
2591
2592 cur_rx = tp->cur_rx;
2593 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
2594 rx_left = rtl8169_rx_quota(rx_left, (u32) dev->quota);
2595
2596 for (; rx_left > 0; rx_left--, cur_rx++) {
2597 unsigned int entry = cur_rx % NUM_RX_DESC;
2598 struct RxDesc *desc = tp->RxDescArray + entry;
2599 u32 status;
2600
2601 rmb();
2602 status = le32_to_cpu(desc->opts1);
2603
2604 if (status & DescOwn)
2605 break;
2606 if (unlikely(status & RxRES)) {
2607 if (netif_msg_rx_err(tp)) {
2608 printk(KERN_INFO
2609 "%s: Rx ERROR. status = %08x\n",
2610 dev->name, status);
2611 }
2612 tp->stats.rx_errors++;
2613 if (status & (RxRWT | RxRUNT))
2614 tp->stats.rx_length_errors++;
2615 if (status & RxCRC)
2616 tp->stats.rx_crc_errors++;
2617 if (status & RxFOVF) {
2618 rtl8169_schedule_work(dev, rtl8169_reset_task);
2619 tp->stats.rx_fifo_errors++;
2620 }
2621 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2622 } else {
2623 struct sk_buff *skb = tp->Rx_skbuff[entry];
2624 dma_addr_t addr = le64_to_cpu(desc->addr);
2625 int pkt_size = (status & 0x00001FFF) - 4;
2626 struct pci_dev *pdev = tp->pci_dev;
2627
2628 /*
2629 * The driver does not support incoming fragmented
2630 * frames. They are seen as a symptom of over-mtu
2631 * sized frames.
2632 */
2633 if (unlikely(rtl8169_fragmented_frame(status))) {
2634 tp->stats.rx_dropped++;
2635 tp->stats.rx_length_errors++;
2636 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2637 continue;
2638 }
2639
2640 rtl8169_rx_csum(skb, desc);
2641
2642 if (rtl8169_try_rx_copy(&skb, pkt_size, pdev, addr,
2643 tp->align)) {
2644 pci_dma_sync_single_for_device(pdev, addr,
2645 pkt_size, PCI_DMA_FROMDEVICE);
2646 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2647 } else {
2648 pci_unmap_single(pdev, addr, pkt_size,
2649 PCI_DMA_FROMDEVICE);
2650 tp->Rx_skbuff[entry] = NULL;
2651 }
2652
2653 skb_put(skb, pkt_size);
2654 skb->protocol = eth_type_trans(skb, dev);
2655
2656 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
2657 rtl8169_rx_skb(skb);
2658
2659 dev->last_rx = jiffies;
2660 tp->stats.rx_bytes += pkt_size;
2661 tp->stats.rx_packets++;
2662 }
2663 }
2664
2665 count = cur_rx - tp->cur_rx;
2666 tp->cur_rx = cur_rx;
2667
2668 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
2669 if (!delta && count && netif_msg_intr(tp))
2670 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
2671 tp->dirty_rx += delta;
2672
2673 /*
2674 * FIXME: until there is periodic timer to try and refill the ring,
2675 * a temporary shortage may definitely kill the Rx process.
2676 * - disable the asic to try and avoid an overflow and kick it again
2677 * after refill ?
2678 * - how do others driver handle this condition (Uh oh...).
2679 */
2680 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
2681 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
2682
2683 return count;
2684 }
2685
2686 /* The interrupt handler does all of the Rx thread work and cleans up after the Tx thread. */
2687 static irqreturn_t
2688 rtl8169_interrupt(int irq, void *dev_instance)
2689 {
2690 struct net_device *dev = (struct net_device *) dev_instance;
2691 struct rtl8169_private *tp = netdev_priv(dev);
2692 int boguscnt = max_interrupt_work;
2693 void __iomem *ioaddr = tp->mmio_addr;
2694 int status;
2695 int handled = 0;
2696
2697 do {
2698 status = RTL_R16(IntrStatus);
2699
2700 /* hotplug/major error/no more work/shared irq */
2701 if ((status == 0xFFFF) || !status)
2702 break;
2703
2704 handled = 1;
2705
2706 if (unlikely(!netif_running(dev))) {
2707 rtl8169_asic_down(ioaddr);
2708 goto out;
2709 }
2710
2711 status &= tp->intr_mask;
2712 RTL_W16(IntrStatus,
2713 (status & RxFIFOOver) ? (status | RxOverflow) : status);
2714
2715 if (!(status & rtl8169_intr_mask))
2716 break;
2717
2718 if (unlikely(status & SYSErr)) {
2719 rtl8169_pcierr_interrupt(dev);
2720 break;
2721 }
2722
2723 if (status & LinkChg)
2724 rtl8169_check_link_status(dev, tp, ioaddr);
2725
2726 #ifdef CONFIG_R8169_NAPI
2727 RTL_W16(IntrMask, rtl8169_intr_mask & ~rtl8169_napi_event);
2728 tp->intr_mask = ~rtl8169_napi_event;
2729
2730 if (likely(netif_rx_schedule_prep(dev)))
2731 __netif_rx_schedule(dev);
2732 else if (netif_msg_intr(tp)) {
2733 printk(KERN_INFO "%s: interrupt %04x taken in poll\n",
2734 dev->name, status);
2735 }
2736 break;
2737 #else
2738 /* Rx interrupt */
2739 if (status & (RxOK | RxOverflow | RxFIFOOver)) {
2740 rtl8169_rx_interrupt(dev, tp, ioaddr);
2741 }
2742 /* Tx interrupt */
2743 if (status & (TxOK | TxErr))
2744 rtl8169_tx_interrupt(dev, tp, ioaddr);
2745 #endif
2746
2747 boguscnt--;
2748 } while (boguscnt > 0);
2749
2750 if (boguscnt <= 0) {
2751 if (netif_msg_intr(tp) && net_ratelimit() ) {
2752 printk(KERN_WARNING
2753 "%s: Too much work at interrupt!\n", dev->name);
2754 }
2755 /* Clear all interrupt sources. */
2756 RTL_W16(IntrStatus, 0xffff);
2757 }
2758 out:
2759 return IRQ_RETVAL(handled);
2760 }
2761
2762 #ifdef CONFIG_R8169_NAPI
2763 static int rtl8169_poll(struct net_device *dev, int *budget)
2764 {
2765 unsigned int work_done, work_to_do = min(*budget, dev->quota);
2766 struct rtl8169_private *tp = netdev_priv(dev);
2767 void __iomem *ioaddr = tp->mmio_addr;
2768
2769 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr);
2770 rtl8169_tx_interrupt(dev, tp, ioaddr);
2771
2772 *budget -= work_done;
2773 dev->quota -= work_done;
2774
2775 if (work_done < work_to_do) {
2776 netif_rx_complete(dev);
2777 tp->intr_mask = 0xffff;
2778 /*
2779 * 20040426: the barrier is not strictly required but the
2780 * behavior of the irq handler could be less predictable
2781 * without it. Btw, the lack of flush for the posted pci
2782 * write is safe - FR
2783 */
2784 smp_wmb();
2785 RTL_W16(IntrMask, rtl8169_intr_mask);
2786 }
2787
2788 return (work_done >= work_to_do);
2789 }
2790 #endif
2791
2792 static void rtl8169_down(struct net_device *dev)
2793 {
2794 struct rtl8169_private *tp = netdev_priv(dev);
2795 void __iomem *ioaddr = tp->mmio_addr;
2796 unsigned int poll_locked = 0;
2797 unsigned int intrmask;
2798
2799 rtl8169_delete_timer(dev);
2800
2801 netif_stop_queue(dev);
2802
2803 core_down:
2804 spin_lock_irq(&tp->lock);
2805
2806 rtl8169_asic_down(ioaddr);
2807
2808 /* Update the error counts. */
2809 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2810 RTL_W32(RxMissed, 0);
2811
2812 spin_unlock_irq(&tp->lock);
2813
2814 synchronize_irq(dev->irq);
2815
2816 if (!poll_locked) {
2817 netif_poll_disable(dev);
2818 poll_locked++;
2819 }
2820
2821 /* Give a racing hard_start_xmit a few cycles to complete. */
2822 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
2823
2824 /*
2825 * And now for the 50k$ question: are IRQ disabled or not ?
2826 *
2827 * Two paths lead here:
2828 * 1) dev->close
2829 * -> netif_running() is available to sync the current code and the
2830 * IRQ handler. See rtl8169_interrupt for details.
2831 * 2) dev->change_mtu
2832 * -> rtl8169_poll can not be issued again and re-enable the
2833 * interruptions. Let's simply issue the IRQ down sequence again.
2834 *
2835 * No loop if hotpluged or major error (0xffff).
2836 */
2837 intrmask = RTL_R16(IntrMask);
2838 if (intrmask && (intrmask != 0xffff))
2839 goto core_down;
2840
2841 rtl8169_tx_clear(tp);
2842
2843 rtl8169_rx_clear(tp);
2844 }
2845
2846 static int rtl8169_close(struct net_device *dev)
2847 {
2848 struct rtl8169_private *tp = netdev_priv(dev);
2849 struct pci_dev *pdev = tp->pci_dev;
2850
2851 rtl8169_down(dev);
2852
2853 free_irq(dev->irq, dev);
2854
2855 netif_poll_enable(dev);
2856
2857 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2858 tp->RxPhyAddr);
2859 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2860 tp->TxPhyAddr);
2861 tp->TxDescArray = NULL;
2862 tp->RxDescArray = NULL;
2863
2864 return 0;
2865 }
2866
2867 static void rtl_set_rx_mode(struct net_device *dev)
2868 {
2869 struct rtl8169_private *tp = netdev_priv(dev);
2870 void __iomem *ioaddr = tp->mmio_addr;
2871 unsigned long flags;
2872 u32 mc_filter[2]; /* Multicast hash filter */
2873 int i, rx_mode;
2874 u32 tmp = 0;
2875
2876 if (dev->flags & IFF_PROMISC) {
2877 /* Unconditionally log net taps. */
2878 if (netif_msg_link(tp)) {
2879 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2880 dev->name);
2881 }
2882 rx_mode =
2883 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2884 AcceptAllPhys;
2885 mc_filter[1] = mc_filter[0] = 0xffffffff;
2886 } else if ((dev->mc_count > multicast_filter_limit)
2887 || (dev->flags & IFF_ALLMULTI)) {
2888 /* Too many to filter perfectly -- accept all multicasts. */
2889 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2890 mc_filter[1] = mc_filter[0] = 0xffffffff;
2891 } else {
2892 struct dev_mc_list *mclist;
2893 rx_mode = AcceptBroadcast | AcceptMyPhys;
2894 mc_filter[1] = mc_filter[0] = 0;
2895 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2896 i++, mclist = mclist->next) {
2897 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2898 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2899 rx_mode |= AcceptMulticast;
2900 }
2901 }
2902
2903 spin_lock_irqsave(&tp->lock, flags);
2904
2905 tmp = rtl8169_rx_config | rx_mode |
2906 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2907
2908 if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
2909 (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
2910 (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2911 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
2912 (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
2913 mc_filter[0] = 0xffffffff;
2914 mc_filter[1] = 0xffffffff;
2915 }
2916
2917 RTL_W32(RxConfig, tmp);
2918 RTL_W32(MAR0 + 0, mc_filter[0]);
2919 RTL_W32(MAR0 + 4, mc_filter[1]);
2920
2921 spin_unlock_irqrestore(&tp->lock, flags);
2922 }
2923
2924 /**
2925 * rtl8169_get_stats - Get rtl8169 read/write statistics
2926 * @dev: The Ethernet Device to get statistics for
2927 *
2928 * Get TX/RX statistics for rtl8169
2929 */
2930 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
2931 {
2932 struct rtl8169_private *tp = netdev_priv(dev);
2933 void __iomem *ioaddr = tp->mmio_addr;
2934 unsigned long flags;
2935
2936 if (netif_running(dev)) {
2937 spin_lock_irqsave(&tp->lock, flags);
2938 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2939 RTL_W32(RxMissed, 0);
2940 spin_unlock_irqrestore(&tp->lock, flags);
2941 }
2942
2943 return &tp->stats;
2944 }
2945
2946 #ifdef CONFIG_PM
2947
2948 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
2949 {
2950 struct net_device *dev = pci_get_drvdata(pdev);
2951 struct rtl8169_private *tp = netdev_priv(dev);
2952 void __iomem *ioaddr = tp->mmio_addr;
2953
2954 if (!netif_running(dev))
2955 goto out_pci_suspend;
2956
2957 netif_device_detach(dev);
2958 netif_stop_queue(dev);
2959
2960 spin_lock_irq(&tp->lock);
2961
2962 rtl8169_asic_down(ioaddr);
2963
2964 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2965 RTL_W32(RxMissed, 0);
2966
2967 spin_unlock_irq(&tp->lock);
2968
2969 out_pci_suspend:
2970 pci_save_state(pdev);
2971 pci_enable_wake(pdev, pci_choose_state(pdev, state), tp->wol_enabled);
2972 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2973
2974 return 0;
2975 }
2976
2977 static int rtl8169_resume(struct pci_dev *pdev)
2978 {
2979 struct net_device *dev = pci_get_drvdata(pdev);
2980
2981 pci_set_power_state(pdev, PCI_D0);
2982 pci_restore_state(pdev);
2983 pci_enable_wake(pdev, PCI_D0, 0);
2984
2985 if (!netif_running(dev))
2986 goto out;
2987
2988 netif_device_attach(dev);
2989
2990 rtl8169_schedule_work(dev, rtl8169_reset_task);
2991 out:
2992 return 0;
2993 }
2994
2995 #endif /* CONFIG_PM */
2996
2997 static struct pci_driver rtl8169_pci_driver = {
2998 .name = MODULENAME,
2999 .id_table = rtl8169_pci_tbl,
3000 .probe = rtl8169_init_one,
3001 .remove = __devexit_p(rtl8169_remove_one),
3002 #ifdef CONFIG_PM
3003 .suspend = rtl8169_suspend,
3004 .resume = rtl8169_resume,
3005 #endif
3006 };
3007
3008 static int __init
3009 rtl8169_init_module(void)
3010 {
3011 return pci_register_driver(&rtl8169_pci_driver);
3012 }
3013
3014 static void __exit
3015 rtl8169_cleanup_module(void)
3016 {
3017 pci_unregister_driver(&rtl8169_pci_driver);
3018 }
3019
3020 module_init(rtl8169_init_module);
3021 module_exit(rtl8169_cleanup_module);
Support for the Chinese Samsung S3C2440 based development boards