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[PATCH] Kconfig fix (PHYLIB vs. s390)
[linux-2.6/sactl.git] / drivers / net / r8169.c
blobf0471d102e3c61bcfc6089c483009e52b2427cfb
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/io.h>
70 #include <asm/irq.h>
71
72 #ifdef CONFIG_R8169_NAPI
73 #define NAPI_SUFFIX "-NAPI"
74 #else
75 #define NAPI_SUFFIX ""
76 #endif
77
78 #define RTL8169_VERSION "2.2LK" NAPI_SUFFIX
79 #define MODULENAME "r8169"
80 #define PFX MODULENAME ": "
81
82 #ifdef RTL8169_DEBUG
83 #define assert(expr) \
84 if(!(expr)) { \
85 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
86 #expr,__FILE__,__FUNCTION__,__LINE__); \
87 }
88 #define dprintk(fmt, args...) do { printk(PFX fmt, ## args); } while (0)
89 #else
90 #define assert(expr) do {} while (0)
91 #define dprintk(fmt, args...) do {} while (0)
92 #endif /* RTL8169_DEBUG */
93
94 #define R8169_MSG_DEFAULT \
95 (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | NETIF_MSG_IFUP | \
96 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_rx
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_receive_skb
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 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 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_B = 0x00,
155 /* RTL_GIGA_MAC_VER_C = 0x03, */
156 RTL_GIGA_MAC_VER_D = 0x01,
157 RTL_GIGA_MAC_VER_E = 0x02,
158 RTL_GIGA_MAC_VER_X = 0x04 /* Greater than RTL_GIGA_MAC_VER_E */
159 };
160
161 enum phy_version {
162 RTL_GIGA_PHY_VER_C = 0x03, /* PHY Reg 0x03 bit0-3 == 0x0000 */
163 RTL_GIGA_PHY_VER_D = 0x04, /* PHY Reg 0x03 bit0-3 == 0x0000 */
164 RTL_GIGA_PHY_VER_E = 0x05, /* PHY Reg 0x03 bit0-3 == 0x0000 */
165 RTL_GIGA_PHY_VER_F = 0x06, /* PHY Reg 0x03 bit0-3 == 0x0001 */
166 RTL_GIGA_PHY_VER_G = 0x07, /* PHY Reg 0x03 bit0-3 == 0x0002 */
167 RTL_GIGA_PHY_VER_H = 0x08, /* PHY Reg 0x03 bit0-3 == 0x0003 */
168 };
169
170
171 #define _R(NAME,MAC,MASK) \
172 { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
173
174 const static struct {
175 const char *name;
176 u8 mac_version;
177 u32 RxConfigMask; /* Clears the bits supported by this chip */
178 } rtl_chip_info[] = {
179 _R("RTL8169", RTL_GIGA_MAC_VER_B, 0xff7e1880),
180 _R("RTL8169s/8110s", RTL_GIGA_MAC_VER_D, 0xff7e1880),
181 _R("RTL8169s/8110s", RTL_GIGA_MAC_VER_E, 0xff7e1880),
182 _R("RTL8169s/8110s", RTL_GIGA_MAC_VER_X, 0xff7e1880),
183 };
184 #undef _R
185
186 static struct pci_device_id rtl8169_pci_tbl[] = {
187 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), },
188 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4300), },
189 { PCI_DEVICE(0x16ec, 0x0116), },
190 { PCI_VENDOR_ID_LINKSYS, 0x1032, PCI_ANY_ID, 0x0024, },
191 {0,},
192 };
193
194 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
195
196 static int rx_copybreak = 200;
197 static int use_dac;
198 static struct {
199 u32 msg_enable;
200 } debug = { -1 };
201
202 enum RTL8169_registers {
203 MAC0 = 0, /* Ethernet hardware address. */
204 MAR0 = 8, /* Multicast filter. */
205 CounterAddrLow = 0x10,
206 CounterAddrHigh = 0x14,
207 TxDescStartAddrLow = 0x20,
208 TxDescStartAddrHigh = 0x24,
209 TxHDescStartAddrLow = 0x28,
210 TxHDescStartAddrHigh = 0x2c,
211 FLASH = 0x30,
212 ERSR = 0x36,
213 ChipCmd = 0x37,
214 TxPoll = 0x38,
215 IntrMask = 0x3C,
216 IntrStatus = 0x3E,
217 TxConfig = 0x40,
218 RxConfig = 0x44,
219 RxMissed = 0x4C,
220 Cfg9346 = 0x50,
221 Config0 = 0x51,
222 Config1 = 0x52,
223 Config2 = 0x53,
224 Config3 = 0x54,
225 Config4 = 0x55,
226 Config5 = 0x56,
227 MultiIntr = 0x5C,
228 PHYAR = 0x60,
229 TBICSR = 0x64,
230 TBI_ANAR = 0x68,
231 TBI_LPAR = 0x6A,
232 PHYstatus = 0x6C,
233 RxMaxSize = 0xDA,
234 CPlusCmd = 0xE0,
235 IntrMitigate = 0xE2,
236 RxDescAddrLow = 0xE4,
237 RxDescAddrHigh = 0xE8,
238 EarlyTxThres = 0xEC,
239 FuncEvent = 0xF0,
240 FuncEventMask = 0xF4,
241 FuncPresetState = 0xF8,
242 FuncForceEvent = 0xFC,
243 };
244
245 enum RTL8169_register_content {
246 /* InterruptStatusBits */
247 SYSErr = 0x8000,
248 PCSTimeout = 0x4000,
249 SWInt = 0x0100,
250 TxDescUnavail = 0x80,
251 RxFIFOOver = 0x40,
252 LinkChg = 0x20,
253 RxOverflow = 0x10,
254 TxErr = 0x08,
255 TxOK = 0x04,
256 RxErr = 0x02,
257 RxOK = 0x01,
258
259 /* RxStatusDesc */
260 RxRES = 0x00200000,
261 RxCRC = 0x00080000,
262 RxRUNT = 0x00100000,
263 RxRWT = 0x00400000,
264
265 /* ChipCmdBits */
266 CmdReset = 0x10,
267 CmdRxEnb = 0x08,
268 CmdTxEnb = 0x04,
269 RxBufEmpty = 0x01,
270
271 /* Cfg9346Bits */
272 Cfg9346_Lock = 0x00,
273 Cfg9346_Unlock = 0xC0,
274
275 /* rx_mode_bits */
276 AcceptErr = 0x20,
277 AcceptRunt = 0x10,
278 AcceptBroadcast = 0x08,
279 AcceptMulticast = 0x04,
280 AcceptMyPhys = 0x02,
281 AcceptAllPhys = 0x01,
282
283 /* RxConfigBits */
284 RxCfgFIFOShift = 13,
285 RxCfgDMAShift = 8,
286
287 /* TxConfigBits */
288 TxInterFrameGapShift = 24,
289 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
290
291 /* TBICSR p.28 */
292 TBIReset = 0x80000000,
293 TBILoopback = 0x40000000,
294 TBINwEnable = 0x20000000,
295 TBINwRestart = 0x10000000,
296 TBILinkOk = 0x02000000,
297 TBINwComplete = 0x01000000,
298
299 /* CPlusCmd p.31 */
300 RxVlan = (1 << 6),
301 RxChkSum = (1 << 5),
302 PCIDAC = (1 << 4),
303 PCIMulRW = (1 << 3),
304
305 /* rtl8169_PHYstatus */
306 TBI_Enable = 0x80,
307 TxFlowCtrl = 0x40,
308 RxFlowCtrl = 0x20,
309 _1000bpsF = 0x10,
310 _100bps = 0x08,
311 _10bps = 0x04,
312 LinkStatus = 0x02,
313 FullDup = 0x01,
314
315 /* GIGABIT_PHY_registers */
316 PHY_CTRL_REG = 0,
317 PHY_STAT_REG = 1,
318 PHY_AUTO_NEGO_REG = 4,
319 PHY_1000_CTRL_REG = 9,
320
321 /* GIGABIT_PHY_REG_BIT */
322 PHY_Restart_Auto_Nego = 0x0200,
323 PHY_Enable_Auto_Nego = 0x1000,
324
325 /* PHY_STAT_REG = 1 */
326 PHY_Auto_Neco_Comp = 0x0020,
327
328 /* PHY_AUTO_NEGO_REG = 4 */
329 PHY_Cap_10_Half = 0x0020,
330 PHY_Cap_10_Full = 0x0040,
331 PHY_Cap_100_Half = 0x0080,
332 PHY_Cap_100_Full = 0x0100,
333
334 /* PHY_1000_CTRL_REG = 9 */
335 PHY_Cap_1000_Full = 0x0200,
336
337 PHY_Cap_Null = 0x0,
338
339 /* _MediaType */
340 _10_Half = 0x01,
341 _10_Full = 0x02,
342 _100_Half = 0x04,
343 _100_Full = 0x08,
344 _1000_Full = 0x10,
345
346 /* _TBICSRBit */
347 TBILinkOK = 0x02000000,
348
349 /* DumpCounterCommand */
350 CounterDump = 0x8,
351 };
352
353 enum _DescStatusBit {
354 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
355 RingEnd = (1 << 30), /* End of descriptor ring */
356 FirstFrag = (1 << 29), /* First segment of a packet */
357 LastFrag = (1 << 28), /* Final segment of a packet */
358
359 /* Tx private */
360 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
361 MSSShift = 16, /* MSS value position */
362 MSSMask = 0xfff, /* MSS value + LargeSend bit: 12 bits */
363 IPCS = (1 << 18), /* Calculate IP checksum */
364 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
365 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
366 TxVlanTag = (1 << 17), /* Add VLAN tag */
367
368 /* Rx private */
369 PID1 = (1 << 18), /* Protocol ID bit 1/2 */
370 PID0 = (1 << 17), /* Protocol ID bit 2/2 */
371
372 #define RxProtoUDP (PID1)
373 #define RxProtoTCP (PID0)
374 #define RxProtoIP (PID1 | PID0)
375 #define RxProtoMask RxProtoIP
376
377 IPFail = (1 << 16), /* IP checksum failed */
378 UDPFail = (1 << 15), /* UDP/IP checksum failed */
379 TCPFail = (1 << 14), /* TCP/IP checksum failed */
380 RxVlanTag = (1 << 16), /* VLAN tag available */
381 };
382
383 #define RsvdMask 0x3fffc000
384
385 struct TxDesc {
386 u32 opts1;
387 u32 opts2;
388 u64 addr;
389 };
390
391 struct RxDesc {
392 u32 opts1;
393 u32 opts2;
394 u64 addr;
395 };
396
397 struct ring_info {
398 struct sk_buff *skb;
399 u32 len;
400 u8 __pad[sizeof(void *) - sizeof(u32)];
401 };
402
403 struct rtl8169_private {
404 void __iomem *mmio_addr; /* memory map physical address */
405 struct pci_dev *pci_dev; /* Index of PCI device */
406 struct net_device_stats stats; /* statistics of net device */
407 spinlock_t lock; /* spin lock flag */
408 u32 msg_enable;
409 int chipset;
410 int mac_version;
411 int phy_version;
412 u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
413 u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
414 u32 dirty_rx;
415 u32 dirty_tx;
416 struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
417 struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
418 dma_addr_t TxPhyAddr;
419 dma_addr_t RxPhyAddr;
420 struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
421 struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
422 unsigned rx_buf_sz;
423 struct timer_list timer;
424 u16 cp_cmd;
425 u16 intr_mask;
426 int phy_auto_nego_reg;
427 int phy_1000_ctrl_reg;
428 #ifdef CONFIG_R8169_VLAN
429 struct vlan_group *vlgrp;
430 #endif
431 int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
432 void (*get_settings)(struct net_device *, struct ethtool_cmd *);
433 void (*phy_reset_enable)(void __iomem *);
434 unsigned int (*phy_reset_pending)(void __iomem *);
435 unsigned int (*link_ok)(void __iomem *);
436 struct work_struct task;
437 };
438
439 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
440 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
441 module_param_array(media, int, &num_media, 0);
442 MODULE_PARM_DESC(media, "force phy operation. Deprecated by ethtool (8).");
443 module_param(rx_copybreak, int, 0);
444 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
445 module_param(use_dac, int, 0);
446 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
447 module_param_named(debug, debug.msg_enable, int, 0);
448 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
449 MODULE_LICENSE("GPL");
450 MODULE_VERSION(RTL8169_VERSION);
451
452 static int rtl8169_open(struct net_device *dev);
453 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
454 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance,
455 struct pt_regs *regs);
456 static int rtl8169_init_ring(struct net_device *dev);
457 static void rtl8169_hw_start(struct net_device *dev);
458 static int rtl8169_close(struct net_device *dev);
459 static void rtl8169_set_rx_mode(struct net_device *dev);
460 static void rtl8169_tx_timeout(struct net_device *dev);
461 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
462 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
463 void __iomem *);
464 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
465 static void rtl8169_down(struct net_device *dev);
466
467 #ifdef CONFIG_R8169_NAPI
468 static int rtl8169_poll(struct net_device *dev, int *budget);
469 #endif
470
471 static const u16 rtl8169_intr_mask =
472 SYSErr | LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK;
473 static const u16 rtl8169_napi_event =
474 RxOK | RxOverflow | RxFIFOOver | TxOK | TxErr;
475 static const unsigned int rtl8169_rx_config =
476 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
477
478 #define PHY_Cap_10_Half_Or_Less PHY_Cap_10_Half
479 #define PHY_Cap_10_Full_Or_Less PHY_Cap_10_Full | PHY_Cap_10_Half_Or_Less
480 #define PHY_Cap_100_Half_Or_Less PHY_Cap_100_Half | PHY_Cap_10_Full_Or_Less
481 #define PHY_Cap_100_Full_Or_Less PHY_Cap_100_Full | PHY_Cap_100_Half_Or_Less
482
483 static void mdio_write(void __iomem *ioaddr, int RegAddr, int value)
484 {
485 int i;
486
487 RTL_W32(PHYAR, 0x80000000 | (RegAddr & 0xFF) << 16 | value);
488 udelay(1000);
489
490 for (i = 2000; i > 0; i--) {
491 /* Check if the RTL8169 has completed writing to the specified MII register */
492 if (!(RTL_R32(PHYAR) & 0x80000000))
493 break;
494 udelay(100);
495 }
496 }
497
498 static int mdio_read(void __iomem *ioaddr, int RegAddr)
499 {
500 int i, value = -1;
501
502 RTL_W32(PHYAR, 0x0 | (RegAddr & 0xFF) << 16);
503 udelay(1000);
504
505 for (i = 2000; i > 0; i--) {
506 /* Check if the RTL8169 has completed retrieving data from the specified MII register */
507 if (RTL_R32(PHYAR) & 0x80000000) {
508 value = (int) (RTL_R32(PHYAR) & 0xFFFF);
509 break;
510 }
511 udelay(100);
512 }
513 return value;
514 }
515
516 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
517 {
518 RTL_W16(IntrMask, 0x0000);
519
520 RTL_W16(IntrStatus, 0xffff);
521 }
522
523 static void rtl8169_asic_down(void __iomem *ioaddr)
524 {
525 RTL_W8(ChipCmd, 0x00);
526 rtl8169_irq_mask_and_ack(ioaddr);
527 RTL_R16(CPlusCmd);
528 }
529
530 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
531 {
532 return RTL_R32(TBICSR) & TBIReset;
533 }
534
535 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
536 {
537 return mdio_read(ioaddr, 0) & 0x8000;
538 }
539
540 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
541 {
542 return RTL_R32(TBICSR) & TBILinkOk;
543 }
544
545 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
546 {
547 return RTL_R8(PHYstatus) & LinkStatus;
548 }
549
550 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
551 {
552 RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
553 }
554
555 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
556 {
557 unsigned int val;
558
559 val = (mdio_read(ioaddr, PHY_CTRL_REG) | 0x8000) & 0xffff;
560 mdio_write(ioaddr, PHY_CTRL_REG, val);
561 }
562
563 static void rtl8169_check_link_status(struct net_device *dev,
564 struct rtl8169_private *tp, void __iomem *ioaddr)
565 {
566 unsigned long flags;
567
568 spin_lock_irqsave(&tp->lock, flags);
569 if (tp->link_ok(ioaddr)) {
570 netif_carrier_on(dev);
571 if (netif_msg_ifup(tp))
572 printk(KERN_INFO PFX "%s: link up\n", dev->name);
573 } else {
574 if (netif_msg_ifdown(tp))
575 printk(KERN_INFO PFX "%s: link down\n", dev->name);
576 netif_carrier_off(dev);
577 }
578 spin_unlock_irqrestore(&tp->lock, flags);
579 }
580
581 static void rtl8169_link_option(int idx, u8 *autoneg, u16 *speed, u8 *duplex)
582 {
583 struct {
584 u16 speed;
585 u8 duplex;
586 u8 autoneg;
587 u8 media;
588 } link_settings[] = {
589 { SPEED_10, DUPLEX_HALF, AUTONEG_DISABLE, _10_Half },
590 { SPEED_10, DUPLEX_FULL, AUTONEG_DISABLE, _10_Full },
591 { SPEED_100, DUPLEX_HALF, AUTONEG_DISABLE, _100_Half },
592 { SPEED_100, DUPLEX_FULL, AUTONEG_DISABLE, _100_Full },
593 { SPEED_1000, DUPLEX_FULL, AUTONEG_DISABLE, _1000_Full },
594 /* Make TBI happy */
595 { SPEED_1000, DUPLEX_FULL, AUTONEG_ENABLE, 0xff }
596 }, *p;
597 unsigned char option;
598
599 option = ((idx < MAX_UNITS) && (idx >= 0)) ? media[idx] : 0xff;
600
601 if ((option != 0xff) && !idx && netif_msg_drv(&debug))
602 printk(KERN_WARNING PFX "media option is deprecated.\n");
603
604 for (p = link_settings; p->media != 0xff; p++) {
605 if (p->media == option)
606 break;
607 }
608 *autoneg = p->autoneg;
609 *speed = p->speed;
610 *duplex = p->duplex;
611 }
612
613 static void rtl8169_get_drvinfo(struct net_device *dev,
614 struct ethtool_drvinfo *info)
615 {
616 struct rtl8169_private *tp = netdev_priv(dev);
617
618 strcpy(info->driver, MODULENAME);
619 strcpy(info->version, RTL8169_VERSION);
620 strcpy(info->bus_info, pci_name(tp->pci_dev));
621 }
622
623 static int rtl8169_get_regs_len(struct net_device *dev)
624 {
625 return R8169_REGS_SIZE;
626 }
627
628 static int rtl8169_set_speed_tbi(struct net_device *dev,
629 u8 autoneg, u16 speed, u8 duplex)
630 {
631 struct rtl8169_private *tp = netdev_priv(dev);
632 void __iomem *ioaddr = tp->mmio_addr;
633 int ret = 0;
634 u32 reg;
635
636 reg = RTL_R32(TBICSR);
637 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
638 (duplex == DUPLEX_FULL)) {
639 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
640 } else if (autoneg == AUTONEG_ENABLE)
641 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
642 else {
643 if (netif_msg_link(tp)) {
644 printk(KERN_WARNING "%s: "
645 "incorrect speed setting refused in TBI mode\n",
646 dev->name);
647 }
648 ret = -EOPNOTSUPP;
649 }
650
651 return ret;
652 }
653
654 static int rtl8169_set_speed_xmii(struct net_device *dev,
655 u8 autoneg, u16 speed, u8 duplex)
656 {
657 struct rtl8169_private *tp = netdev_priv(dev);
658 void __iomem *ioaddr = tp->mmio_addr;
659 int auto_nego, giga_ctrl;
660
661 auto_nego = mdio_read(ioaddr, PHY_AUTO_NEGO_REG);
662 auto_nego &= ~(PHY_Cap_10_Half | PHY_Cap_10_Full |
663 PHY_Cap_100_Half | PHY_Cap_100_Full);
664 giga_ctrl = mdio_read(ioaddr, PHY_1000_CTRL_REG);
665 giga_ctrl &= ~(PHY_Cap_1000_Full | PHY_Cap_Null);
666
667 if (autoneg == AUTONEG_ENABLE) {
668 auto_nego |= (PHY_Cap_10_Half | PHY_Cap_10_Full |
669 PHY_Cap_100_Half | PHY_Cap_100_Full);
670 giga_ctrl |= PHY_Cap_1000_Full;
671 } else {
672 if (speed == SPEED_10)
673 auto_nego |= PHY_Cap_10_Half | PHY_Cap_10_Full;
674 else if (speed == SPEED_100)
675 auto_nego |= PHY_Cap_100_Half | PHY_Cap_100_Full;
676 else if (speed == SPEED_1000)
677 giga_ctrl |= PHY_Cap_1000_Full;
678
679 if (duplex == DUPLEX_HALF)
680 auto_nego &= ~(PHY_Cap_10_Full | PHY_Cap_100_Full);
681 }
682
683 tp->phy_auto_nego_reg = auto_nego;
684 tp->phy_1000_ctrl_reg = giga_ctrl;
685
686 mdio_write(ioaddr, PHY_AUTO_NEGO_REG, auto_nego);
687 mdio_write(ioaddr, PHY_1000_CTRL_REG, giga_ctrl);
688 mdio_write(ioaddr, PHY_CTRL_REG, PHY_Enable_Auto_Nego |
689 PHY_Restart_Auto_Nego);
690 return 0;
691 }
692
693 static int rtl8169_set_speed(struct net_device *dev,
694 u8 autoneg, u16 speed, u8 duplex)
695 {
696 struct rtl8169_private *tp = netdev_priv(dev);
697 int ret;
698
699 ret = tp->set_speed(dev, autoneg, speed, duplex);
700
701 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & PHY_Cap_1000_Full))
702 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
703
704 return ret;
705 }
706
707 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
708 {
709 struct rtl8169_private *tp = netdev_priv(dev);
710 unsigned long flags;
711 int ret;
712
713 spin_lock_irqsave(&tp->lock, flags);
714 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
715 spin_unlock_irqrestore(&tp->lock, flags);
716
717 return ret;
718 }
719
720 static u32 rtl8169_get_rx_csum(struct net_device *dev)
721 {
722 struct rtl8169_private *tp = netdev_priv(dev);
723
724 return tp->cp_cmd & RxChkSum;
725 }
726
727 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
728 {
729 struct rtl8169_private *tp = netdev_priv(dev);
730 void __iomem *ioaddr = tp->mmio_addr;
731 unsigned long flags;
732
733 spin_lock_irqsave(&tp->lock, flags);
734
735 if (data)
736 tp->cp_cmd |= RxChkSum;
737 else
738 tp->cp_cmd &= ~RxChkSum;
739
740 RTL_W16(CPlusCmd, tp->cp_cmd);
741 RTL_R16(CPlusCmd);
742
743 spin_unlock_irqrestore(&tp->lock, flags);
744
745 return 0;
746 }
747
748 #ifdef CONFIG_R8169_VLAN
749
750 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
751 struct sk_buff *skb)
752 {
753 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
754 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
755 }
756
757 static void rtl8169_vlan_rx_register(struct net_device *dev,
758 struct vlan_group *grp)
759 {
760 struct rtl8169_private *tp = netdev_priv(dev);
761 void __iomem *ioaddr = tp->mmio_addr;
762 unsigned long flags;
763
764 spin_lock_irqsave(&tp->lock, flags);
765 tp->vlgrp = grp;
766 if (tp->vlgrp)
767 tp->cp_cmd |= RxVlan;
768 else
769 tp->cp_cmd &= ~RxVlan;
770 RTL_W16(CPlusCmd, tp->cp_cmd);
771 RTL_R16(CPlusCmd);
772 spin_unlock_irqrestore(&tp->lock, flags);
773 }
774
775 static void rtl8169_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
776 {
777 struct rtl8169_private *tp = netdev_priv(dev);
778 unsigned long flags;
779
780 spin_lock_irqsave(&tp->lock, flags);
781 if (tp->vlgrp)
782 tp->vlgrp->vlan_devices[vid] = NULL;
783 spin_unlock_irqrestore(&tp->lock, flags);
784 }
785
786 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
787 struct sk_buff *skb)
788 {
789 u32 opts2 = le32_to_cpu(desc->opts2);
790 int ret;
791
792 if (tp->vlgrp && (opts2 & RxVlanTag)) {
793 rtl8169_rx_hwaccel_skb(skb, tp->vlgrp,
794 swab16(opts2 & 0xffff));
795 ret = 0;
796 } else
797 ret = -1;
798 desc->opts2 = 0;
799 return ret;
800 }
801
802 #else /* !CONFIG_R8169_VLAN */
803
804 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
805 struct sk_buff *skb)
806 {
807 return 0;
808 }
809
810 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
811 struct sk_buff *skb)
812 {
813 return -1;
814 }
815
816 #endif
817
818 static void rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
819 {
820 struct rtl8169_private *tp = netdev_priv(dev);
821 void __iomem *ioaddr = tp->mmio_addr;
822 u32 status;
823
824 cmd->supported =
825 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
826 cmd->port = PORT_FIBRE;
827 cmd->transceiver = XCVR_INTERNAL;
828
829 status = RTL_R32(TBICSR);
830 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
831 cmd->autoneg = !!(status & TBINwEnable);
832
833 cmd->speed = SPEED_1000;
834 cmd->duplex = DUPLEX_FULL; /* Always set */
835 }
836
837 static void rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
838 {
839 struct rtl8169_private *tp = netdev_priv(dev);
840 void __iomem *ioaddr = tp->mmio_addr;
841 u8 status;
842
843 cmd->supported = SUPPORTED_10baseT_Half |
844 SUPPORTED_10baseT_Full |
845 SUPPORTED_100baseT_Half |
846 SUPPORTED_100baseT_Full |
847 SUPPORTED_1000baseT_Full |
848 SUPPORTED_Autoneg |
849 SUPPORTED_TP;
850
851 cmd->autoneg = 1;
852 cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
853
854 if (tp->phy_auto_nego_reg & PHY_Cap_10_Half)
855 cmd->advertising |= ADVERTISED_10baseT_Half;
856 if (tp->phy_auto_nego_reg & PHY_Cap_10_Full)
857 cmd->advertising |= ADVERTISED_10baseT_Full;
858 if (tp->phy_auto_nego_reg & PHY_Cap_100_Half)
859 cmd->advertising |= ADVERTISED_100baseT_Half;
860 if (tp->phy_auto_nego_reg & PHY_Cap_100_Full)
861 cmd->advertising |= ADVERTISED_100baseT_Full;
862 if (tp->phy_1000_ctrl_reg & PHY_Cap_1000_Full)
863 cmd->advertising |= ADVERTISED_1000baseT_Full;
864
865 status = RTL_R8(PHYstatus);
866
867 if (status & _1000bpsF)
868 cmd->speed = SPEED_1000;
869 else if (status & _100bps)
870 cmd->speed = SPEED_100;
871 else if (status & _10bps)
872 cmd->speed = SPEED_10;
873
874 cmd->duplex = ((status & _1000bpsF) || (status & FullDup)) ?
875 DUPLEX_FULL : DUPLEX_HALF;
876 }
877
878 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
879 {
880 struct rtl8169_private *tp = netdev_priv(dev);
881 unsigned long flags;
882
883 spin_lock_irqsave(&tp->lock, flags);
884
885 tp->get_settings(dev, cmd);
886
887 spin_unlock_irqrestore(&tp->lock, flags);
888 return 0;
889 }
890
891 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
892 void *p)
893 {
894 struct rtl8169_private *tp = netdev_priv(dev);
895 unsigned long flags;
896
897 if (regs->len > R8169_REGS_SIZE)
898 regs->len = R8169_REGS_SIZE;
899
900 spin_lock_irqsave(&tp->lock, flags);
901 memcpy_fromio(p, tp->mmio_addr, regs->len);
902 spin_unlock_irqrestore(&tp->lock, flags);
903 }
904
905 static u32 rtl8169_get_msglevel(struct net_device *dev)
906 {
907 struct rtl8169_private *tp = netdev_priv(dev);
908
909 return tp->msg_enable;
910 }
911
912 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
913 {
914 struct rtl8169_private *tp = netdev_priv(dev);
915
916 tp->msg_enable = value;
917 }
918
919 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
920 "tx_packets",
921 "rx_packets",
922 "tx_errors",
923 "rx_errors",
924 "rx_missed",
925 "align_errors",
926 "tx_single_collisions",
927 "tx_multi_collisions",
928 "unicast",
929 "broadcast",
930 "multicast",
931 "tx_aborted",
932 "tx_underrun",
933 };
934
935 struct rtl8169_counters {
936 u64 tx_packets;
937 u64 rx_packets;
938 u64 tx_errors;
939 u32 rx_errors;
940 u16 rx_missed;
941 u16 align_errors;
942 u32 tx_one_collision;
943 u32 tx_multi_collision;
944 u64 rx_unicast;
945 u64 rx_broadcast;
946 u32 rx_multicast;
947 u16 tx_aborted;
948 u16 tx_underun;
949 };
950
951 static int rtl8169_get_stats_count(struct net_device *dev)
952 {
953 return ARRAY_SIZE(rtl8169_gstrings);
954 }
955
956 static void rtl8169_get_ethtool_stats(struct net_device *dev,
957 struct ethtool_stats *stats, u64 *data)
958 {
959 struct rtl8169_private *tp = netdev_priv(dev);
960 void __iomem *ioaddr = tp->mmio_addr;
961 struct rtl8169_counters *counters;
962 dma_addr_t paddr;
963 u32 cmd;
964
965 ASSERT_RTNL();
966
967 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
968 if (!counters)
969 return;
970
971 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
972 cmd = (u64)paddr & DMA_32BIT_MASK;
973 RTL_W32(CounterAddrLow, cmd);
974 RTL_W32(CounterAddrLow, cmd | CounterDump);
975
976 while (RTL_R32(CounterAddrLow) & CounterDump) {
977 if (msleep_interruptible(1))
978 break;
979 }
980
981 RTL_W32(CounterAddrLow, 0);
982 RTL_W32(CounterAddrHigh, 0);
983
984 data[0] = le64_to_cpu(counters->tx_packets);
985 data[1] = le64_to_cpu(counters->rx_packets);
986 data[2] = le64_to_cpu(counters->tx_errors);
987 data[3] = le32_to_cpu(counters->rx_errors);
988 data[4] = le16_to_cpu(counters->rx_missed);
989 data[5] = le16_to_cpu(counters->align_errors);
990 data[6] = le32_to_cpu(counters->tx_one_collision);
991 data[7] = le32_to_cpu(counters->tx_multi_collision);
992 data[8] = le64_to_cpu(counters->rx_unicast);
993 data[9] = le64_to_cpu(counters->rx_broadcast);
994 data[10] = le32_to_cpu(counters->rx_multicast);
995 data[11] = le16_to_cpu(counters->tx_aborted);
996 data[12] = le16_to_cpu(counters->tx_underun);
997
998 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
999 }
1000
1001 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1002 {
1003 switch(stringset) {
1004 case ETH_SS_STATS:
1005 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1006 break;
1007 }
1008 }
1009
1010
1011 static struct ethtool_ops rtl8169_ethtool_ops = {
1012 .get_drvinfo = rtl8169_get_drvinfo,
1013 .get_regs_len = rtl8169_get_regs_len,
1014 .get_link = ethtool_op_get_link,
1015 .get_settings = rtl8169_get_settings,
1016 .set_settings = rtl8169_set_settings,
1017 .get_msglevel = rtl8169_get_msglevel,
1018 .set_msglevel = rtl8169_set_msglevel,
1019 .get_rx_csum = rtl8169_get_rx_csum,
1020 .set_rx_csum = rtl8169_set_rx_csum,
1021 .get_tx_csum = ethtool_op_get_tx_csum,
1022 .set_tx_csum = ethtool_op_set_tx_csum,
1023 .get_sg = ethtool_op_get_sg,
1024 .set_sg = ethtool_op_set_sg,
1025 .get_tso = ethtool_op_get_tso,
1026 .set_tso = ethtool_op_set_tso,
1027 .get_regs = rtl8169_get_regs,
1028 .get_strings = rtl8169_get_strings,
1029 .get_stats_count = rtl8169_get_stats_count,
1030 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1031 };
1032
1033 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg, int bitnum,
1034 int bitval)
1035 {
1036 int val;
1037
1038 val = mdio_read(ioaddr, reg);
1039 val = (bitval == 1) ?
1040 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1041 mdio_write(ioaddr, reg, val & 0xffff);
1042 }
1043
1044 static void rtl8169_get_mac_version(struct rtl8169_private *tp, void __iomem *ioaddr)
1045 {
1046 const struct {
1047 u32 mask;
1048 int mac_version;
1049 } mac_info[] = {
1050 { 0x1 << 28, RTL_GIGA_MAC_VER_X },
1051 { 0x1 << 26, RTL_GIGA_MAC_VER_E },
1052 { 0x1 << 23, RTL_GIGA_MAC_VER_D },
1053 { 0x00000000, RTL_GIGA_MAC_VER_B } /* Catch-all */
1054 }, *p = mac_info;
1055 u32 reg;
1056
1057 reg = RTL_R32(TxConfig) & 0x7c800000;
1058 while ((reg & p->mask) != p->mask)
1059 p++;
1060 tp->mac_version = p->mac_version;
1061 }
1062
1063 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1064 {
1065 struct {
1066 int version;
1067 char *msg;
1068 } mac_print[] = {
1069 { RTL_GIGA_MAC_VER_E, "RTL_GIGA_MAC_VER_E" },
1070 { RTL_GIGA_MAC_VER_D, "RTL_GIGA_MAC_VER_D" },
1071 { RTL_GIGA_MAC_VER_B, "RTL_GIGA_MAC_VER_B" },
1072 { 0, NULL }
1073 }, *p;
1074
1075 for (p = mac_print; p->msg; p++) {
1076 if (tp->mac_version == p->version) {
1077 dprintk("mac_version == %s (%04d)\n", p->msg,
1078 p->version);
1079 return;
1080 }
1081 }
1082 dprintk("mac_version == Unknown\n");
1083 }
1084
1085 static void rtl8169_get_phy_version(struct rtl8169_private *tp, void __iomem *ioaddr)
1086 {
1087 const struct {
1088 u16 mask;
1089 u16 set;
1090 int phy_version;
1091 } phy_info[] = {
1092 { 0x000f, 0x0002, RTL_GIGA_PHY_VER_G },
1093 { 0x000f, 0x0001, RTL_GIGA_PHY_VER_F },
1094 { 0x000f, 0x0000, RTL_GIGA_PHY_VER_E },
1095 { 0x0000, 0x0000, RTL_GIGA_PHY_VER_D } /* Catch-all */
1096 }, *p = phy_info;
1097 u16 reg;
1098
1099 reg = mdio_read(ioaddr, 3) & 0xffff;
1100 while ((reg & p->mask) != p->set)
1101 p++;
1102 tp->phy_version = p->phy_version;
1103 }
1104
1105 static void rtl8169_print_phy_version(struct rtl8169_private *tp)
1106 {
1107 struct {
1108 int version;
1109 char *msg;
1110 u32 reg;
1111 } phy_print[] = {
1112 { RTL_GIGA_PHY_VER_G, "RTL_GIGA_PHY_VER_G", 0x0002 },
1113 { RTL_GIGA_PHY_VER_F, "RTL_GIGA_PHY_VER_F", 0x0001 },
1114 { RTL_GIGA_PHY_VER_E, "RTL_GIGA_PHY_VER_E", 0x0000 },
1115 { RTL_GIGA_PHY_VER_D, "RTL_GIGA_PHY_VER_D", 0x0000 },
1116 { 0, NULL, 0x0000 }
1117 }, *p;
1118
1119 for (p = phy_print; p->msg; p++) {
1120 if (tp->phy_version == p->version) {
1121 dprintk("phy_version == %s (%04x)\n", p->msg, p->reg);
1122 return;
1123 }
1124 }
1125 dprintk("phy_version == Unknown\n");
1126 }
1127
1128 static void rtl8169_hw_phy_config(struct net_device *dev)
1129 {
1130 struct rtl8169_private *tp = netdev_priv(dev);
1131 void __iomem *ioaddr = tp->mmio_addr;
1132 struct {
1133 u16 regs[5]; /* Beware of bit-sign propagation */
1134 } phy_magic[5] = { {
1135 { 0x0000, //w 4 15 12 0
1136 0x00a1, //w 3 15 0 00a1
1137 0x0008, //w 2 15 0 0008
1138 0x1020, //w 1 15 0 1020
1139 0x1000 } },{ //w 0 15 0 1000
1140 { 0x7000, //w 4 15 12 7
1141 0xff41, //w 3 15 0 ff41
1142 0xde60, //w 2 15 0 de60
1143 0x0140, //w 1 15 0 0140
1144 0x0077 } },{ //w 0 15 0 0077
1145 { 0xa000, //w 4 15 12 a
1146 0xdf01, //w 3 15 0 df01
1147 0xdf20, //w 2 15 0 df20
1148 0xff95, //w 1 15 0 ff95
1149 0xfa00 } },{ //w 0 15 0 fa00
1150 { 0xb000, //w 4 15 12 b
1151 0xff41, //w 3 15 0 ff41
1152 0xde20, //w 2 15 0 de20
1153 0x0140, //w 1 15 0 0140
1154 0x00bb } },{ //w 0 15 0 00bb
1155 { 0xf000, //w 4 15 12 f
1156 0xdf01, //w 3 15 0 df01
1157 0xdf20, //w 2 15 0 df20
1158 0xff95, //w 1 15 0 ff95
1159 0xbf00 } //w 0 15 0 bf00
1160 }
1161 }, *p = phy_magic;
1162 int i;
1163
1164 rtl8169_print_mac_version(tp);
1165 rtl8169_print_phy_version(tp);
1166
1167 if (tp->mac_version <= RTL_GIGA_MAC_VER_B)
1168 return;
1169 if (tp->phy_version >= RTL_GIGA_PHY_VER_H)
1170 return;
1171
1172 dprintk("MAC version != 0 && PHY version == 0 or 1\n");
1173 dprintk("Do final_reg2.cfg\n");
1174
1175 /* Shazam ! */
1176
1177 if (tp->mac_version == RTL_GIGA_MAC_VER_X) {
1178 mdio_write(ioaddr, 31, 0x0001);
1179 mdio_write(ioaddr, 9, 0x273a);
1180 mdio_write(ioaddr, 14, 0x7bfb);
1181 mdio_write(ioaddr, 27, 0x841e);
1182
1183 mdio_write(ioaddr, 31, 0x0002);
1184 mdio_write(ioaddr, 1, 0x90d0);
1185 mdio_write(ioaddr, 31, 0x0000);
1186 return;
1187 }
1188
1189 /* phy config for RTL8169s mac_version C chip */
1190 mdio_write(ioaddr, 31, 0x0001); //w 31 2 0 1
1191 mdio_write(ioaddr, 21, 0x1000); //w 21 15 0 1000
1192 mdio_write(ioaddr, 24, 0x65c7); //w 24 15 0 65c7
1193 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1194
1195 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1196 int val, pos = 4;
1197
1198 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1199 mdio_write(ioaddr, pos, val);
1200 while (--pos >= 0)
1201 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1202 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1203 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1204 }
1205 mdio_write(ioaddr, 31, 0x0000); //w 31 2 0 0
1206 }
1207
1208 static void rtl8169_phy_timer(unsigned long __opaque)
1209 {
1210 struct net_device *dev = (struct net_device *)__opaque;
1211 struct rtl8169_private *tp = netdev_priv(dev);
1212 struct timer_list *timer = &tp->timer;
1213 void __iomem *ioaddr = tp->mmio_addr;
1214 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1215
1216 assert(tp->mac_version > RTL_GIGA_MAC_VER_B);
1217 assert(tp->phy_version < RTL_GIGA_PHY_VER_H);
1218
1219 if (!(tp->phy_1000_ctrl_reg & PHY_Cap_1000_Full))
1220 return;
1221
1222 spin_lock_irq(&tp->lock);
1223
1224 if (tp->phy_reset_pending(ioaddr)) {
1225 /*
1226 * A busy loop could burn quite a few cycles on nowadays CPU.
1227 * Let's delay the execution of the timer for a few ticks.
1228 */
1229 timeout = HZ/10;
1230 goto out_mod_timer;
1231 }
1232
1233 if (tp->link_ok(ioaddr))
1234 goto out_unlock;
1235
1236 if (netif_msg_link(tp))
1237 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1238
1239 tp->phy_reset_enable(ioaddr);
1240
1241 out_mod_timer:
1242 mod_timer(timer, jiffies + timeout);
1243 out_unlock:
1244 spin_unlock_irq(&tp->lock);
1245 }
1246
1247 static inline void rtl8169_delete_timer(struct net_device *dev)
1248 {
1249 struct rtl8169_private *tp = netdev_priv(dev);
1250 struct timer_list *timer = &tp->timer;
1251
1252 if ((tp->mac_version <= RTL_GIGA_MAC_VER_B) ||
1253 (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1254 return;
1255
1256 del_timer_sync(timer);
1257 }
1258
1259 static inline void rtl8169_request_timer(struct net_device *dev)
1260 {
1261 struct rtl8169_private *tp = netdev_priv(dev);
1262 struct timer_list *timer = &tp->timer;
1263
1264 if ((tp->mac_version <= RTL_GIGA_MAC_VER_B) ||
1265 (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1266 return;
1267
1268 init_timer(timer);
1269 timer->expires = jiffies + RTL8169_PHY_TIMEOUT;
1270 timer->data = (unsigned long)(dev);
1271 timer->function = rtl8169_phy_timer;
1272 add_timer(timer);
1273 }
1274
1275 #ifdef CONFIG_NET_POLL_CONTROLLER
1276 /*
1277 * Polling 'interrupt' - used by things like netconsole to send skbs
1278 * without having to re-enable interrupts. It's not called while
1279 * the interrupt routine is executing.
1280 */
1281 static void rtl8169_netpoll(struct net_device *dev)
1282 {
1283 struct rtl8169_private *tp = netdev_priv(dev);
1284 struct pci_dev *pdev = tp->pci_dev;
1285
1286 disable_irq(pdev->irq);
1287 rtl8169_interrupt(pdev->irq, dev, NULL);
1288 enable_irq(pdev->irq);
1289 }
1290 #endif
1291
1292 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1293 void __iomem *ioaddr)
1294 {
1295 iounmap(ioaddr);
1296 pci_release_regions(pdev);
1297 pci_disable_device(pdev);
1298 free_netdev(dev);
1299 }
1300
1301 static int __devinit
1302 rtl8169_init_board(struct pci_dev *pdev, struct net_device **dev_out,
1303 void __iomem **ioaddr_out)
1304 {
1305 void __iomem *ioaddr;
1306 struct net_device *dev;
1307 struct rtl8169_private *tp;
1308 int rc = -ENOMEM, i, acpi_idle_state = 0, pm_cap;
1309
1310 assert(ioaddr_out != NULL);
1311
1312 /* dev zeroed in alloc_etherdev */
1313 dev = alloc_etherdev(sizeof (*tp));
1314 if (dev == NULL) {
1315 if (netif_msg_drv(&debug))
1316 printk(KERN_ERR PFX "unable to alloc new ethernet\n");
1317 goto err_out;
1318 }
1319
1320 SET_MODULE_OWNER(dev);
1321 SET_NETDEV_DEV(dev, &pdev->dev);
1322 tp = netdev_priv(dev);
1323 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1324
1325 /* enable device (incl. PCI PM wakeup and hotplug setup) */
1326 rc = pci_enable_device(pdev);
1327 if (rc < 0) {
1328 if (netif_msg_probe(tp)) {
1329 printk(KERN_ERR PFX "%s: enable failure\n",
1330 pci_name(pdev));
1331 }
1332 goto err_out_free_dev;
1333 }
1334
1335 rc = pci_set_mwi(pdev);
1336 if (rc < 0)
1337 goto err_out_disable;
1338
1339 /* save power state before pci_enable_device overwrites it */
1340 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
1341 if (pm_cap) {
1342 u16 pwr_command;
1343
1344 pci_read_config_word(pdev, pm_cap + PCI_PM_CTRL, &pwr_command);
1345 acpi_idle_state = pwr_command & PCI_PM_CTRL_STATE_MASK;
1346 } else {
1347 if (netif_msg_probe(tp)) {
1348 printk(KERN_ERR PFX
1349 "Cannot find PowerManagement capability. "
1350 "Aborting.\n");
1351 }
1352 goto err_out_mwi;
1353 }
1354
1355 /* make sure PCI base addr 1 is MMIO */
1356 if (!(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
1357 if (netif_msg_probe(tp)) {
1358 printk(KERN_ERR PFX
1359 "region #1 not an MMIO resource, aborting\n");
1360 }
1361 rc = -ENODEV;
1362 goto err_out_mwi;
1363 }
1364 /* check for weird/broken PCI region reporting */
1365 if (pci_resource_len(pdev, 1) < R8169_REGS_SIZE) {
1366 if (netif_msg_probe(tp)) {
1367 printk(KERN_ERR PFX
1368 "Invalid PCI region size(s), aborting\n");
1369 }
1370 rc = -ENODEV;
1371 goto err_out_mwi;
1372 }
1373
1374 rc = pci_request_regions(pdev, MODULENAME);
1375 if (rc < 0) {
1376 if (netif_msg_probe(tp)) {
1377 printk(KERN_ERR PFX "%s: could not request regions.\n",
1378 pci_name(pdev));
1379 }
1380 goto err_out_mwi;
1381 }
1382
1383 tp->cp_cmd = PCIMulRW | RxChkSum;
1384
1385 if ((sizeof(dma_addr_t) > 4) &&
1386 !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1387 tp->cp_cmd |= PCIDAC;
1388 dev->features |= NETIF_F_HIGHDMA;
1389 } else {
1390 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1391 if (rc < 0) {
1392 if (netif_msg_probe(tp)) {
1393 printk(KERN_ERR PFX
1394 "DMA configuration failed.\n");
1395 }
1396 goto err_out_free_res;
1397 }
1398 }
1399
1400 pci_set_master(pdev);
1401
1402 /* ioremap MMIO region */
1403 ioaddr = ioremap(pci_resource_start(pdev, 1), R8169_REGS_SIZE);
1404 if (ioaddr == NULL) {
1405 if (netif_msg_probe(tp))
1406 printk(KERN_ERR PFX "cannot remap MMIO, aborting\n");
1407 rc = -EIO;
1408 goto err_out_free_res;
1409 }
1410
1411 /* Unneeded ? Don't mess with Mrs. Murphy. */
1412 rtl8169_irq_mask_and_ack(ioaddr);
1413
1414 /* Soft reset the chip. */
1415 RTL_W8(ChipCmd, CmdReset);
1416
1417 /* Check that the chip has finished the reset. */
1418 for (i = 1000; i > 0; i--) {
1419 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1420 break;
1421 udelay(10);
1422 }
1423
1424 /* Identify chip attached to board */
1425 rtl8169_get_mac_version(tp, ioaddr);
1426 rtl8169_get_phy_version(tp, ioaddr);
1427
1428 rtl8169_print_mac_version(tp);
1429 rtl8169_print_phy_version(tp);
1430
1431 for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--) {
1432 if (tp->mac_version == rtl_chip_info[i].mac_version)
1433 break;
1434 }
1435 if (i < 0) {
1436 /* Unknown chip: assume array element #0, original RTL-8169 */
1437 if (netif_msg_probe(tp)) {
1438 printk(KERN_DEBUG PFX "PCI device %s: "
1439 "unknown chip version, assuming %s\n",
1440 pci_name(pdev), rtl_chip_info[0].name);
1441 }
1442 i++;
1443 }
1444 tp->chipset = i;
1445
1446 *ioaddr_out = ioaddr;
1447 *dev_out = dev;
1448 out:
1449 return rc;
1450
1451 err_out_free_res:
1452 pci_release_regions(pdev);
1453
1454 err_out_mwi:
1455 pci_clear_mwi(pdev);
1456
1457 err_out_disable:
1458 pci_disable_device(pdev);
1459
1460 err_out_free_dev:
1461 free_netdev(dev);
1462 err_out:
1463 *ioaddr_out = NULL;
1464 *dev_out = NULL;
1465 goto out;
1466 }
1467
1468 static int __devinit
1469 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1470 {
1471 struct net_device *dev = NULL;
1472 struct rtl8169_private *tp;
1473 void __iomem *ioaddr = NULL;
1474 static int board_idx = -1;
1475 u8 autoneg, duplex;
1476 u16 speed;
1477 int i, rc;
1478
1479 assert(pdev != NULL);
1480 assert(ent != NULL);
1481
1482 board_idx++;
1483
1484 if (netif_msg_drv(&debug)) {
1485 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1486 MODULENAME, RTL8169_VERSION);
1487 }
1488
1489 rc = rtl8169_init_board(pdev, &dev, &ioaddr);
1490 if (rc)
1491 return rc;
1492
1493 tp = netdev_priv(dev);
1494 assert(ioaddr != NULL);
1495
1496 if (RTL_R8(PHYstatus) & TBI_Enable) {
1497 tp->set_speed = rtl8169_set_speed_tbi;
1498 tp->get_settings = rtl8169_gset_tbi;
1499 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1500 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1501 tp->link_ok = rtl8169_tbi_link_ok;
1502
1503 tp->phy_1000_ctrl_reg = PHY_Cap_1000_Full; /* Implied by TBI */
1504 } else {
1505 tp->set_speed = rtl8169_set_speed_xmii;
1506 tp->get_settings = rtl8169_gset_xmii;
1507 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1508 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1509 tp->link_ok = rtl8169_xmii_link_ok;
1510 }
1511
1512 /* Get MAC address. FIXME: read EEPROM */
1513 for (i = 0; i < MAC_ADDR_LEN; i++)
1514 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1515
1516 dev->open = rtl8169_open;
1517 dev->hard_start_xmit = rtl8169_start_xmit;
1518 dev->get_stats = rtl8169_get_stats;
1519 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1520 dev->stop = rtl8169_close;
1521 dev->tx_timeout = rtl8169_tx_timeout;
1522 dev->set_multicast_list = rtl8169_set_rx_mode;
1523 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1524 dev->irq = pdev->irq;
1525 dev->base_addr = (unsigned long) ioaddr;
1526 dev->change_mtu = rtl8169_change_mtu;
1527
1528 #ifdef CONFIG_R8169_NAPI
1529 dev->poll = rtl8169_poll;
1530 dev->weight = R8169_NAPI_WEIGHT;
1531 #endif
1532
1533 #ifdef CONFIG_R8169_VLAN
1534 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1535 dev->vlan_rx_register = rtl8169_vlan_rx_register;
1536 dev->vlan_rx_kill_vid = rtl8169_vlan_rx_kill_vid;
1537 #endif
1538
1539 #ifdef CONFIG_NET_POLL_CONTROLLER
1540 dev->poll_controller = rtl8169_netpoll;
1541 #endif
1542
1543 tp->intr_mask = 0xffff;
1544 tp->pci_dev = pdev;
1545 tp->mmio_addr = ioaddr;
1546
1547 spin_lock_init(&tp->lock);
1548
1549 rc = register_netdev(dev);
1550 if (rc) {
1551 rtl8169_release_board(pdev, dev, ioaddr);
1552 return rc;
1553 }
1554
1555 if (netif_msg_probe(tp)) {
1556 printk(KERN_DEBUG "%s: Identified chip type is '%s'.\n",
1557 dev->name, rtl_chip_info[tp->chipset].name);
1558 }
1559
1560 pci_set_drvdata(pdev, dev);
1561
1562 if (netif_msg_probe(tp)) {
1563 printk(KERN_INFO "%s: %s at 0x%lx, "
1564 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1565 "IRQ %d\n",
1566 dev->name,
1567 rtl_chip_info[ent->driver_data].name,
1568 dev->base_addr,
1569 dev->dev_addr[0], dev->dev_addr[1],
1570 dev->dev_addr[2], dev->dev_addr[3],
1571 dev->dev_addr[4], dev->dev_addr[5], dev->irq);
1572 }
1573
1574 rtl8169_hw_phy_config(dev);
1575
1576 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1577 RTL_W8(0x82, 0x01);
1578
1579 if (tp->mac_version < RTL_GIGA_MAC_VER_E) {
1580 dprintk("Set PCI Latency=0x40\n");
1581 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x40);
1582 }
1583
1584 if (tp->mac_version == RTL_GIGA_MAC_VER_D) {
1585 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1586 RTL_W8(0x82, 0x01);
1587 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1588 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1589 }
1590
1591 rtl8169_link_option(board_idx, &autoneg, &speed, &duplex);
1592
1593 rtl8169_set_speed(dev, autoneg, speed, duplex);
1594
1595 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1596 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1597
1598 return 0;
1599 }
1600
1601 static void __devexit
1602 rtl8169_remove_one(struct pci_dev *pdev)
1603 {
1604 struct net_device *dev = pci_get_drvdata(pdev);
1605 struct rtl8169_private *tp = netdev_priv(dev);
1606
1607 assert(dev != NULL);
1608 assert(tp != NULL);
1609
1610 unregister_netdev(dev);
1611 rtl8169_release_board(pdev, dev, tp->mmio_addr);
1612 pci_set_drvdata(pdev, NULL);
1613 }
1614
1615 #ifdef CONFIG_PM
1616
1617 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
1618 {
1619 struct net_device *dev = pci_get_drvdata(pdev);
1620 struct rtl8169_private *tp = netdev_priv(dev);
1621 void __iomem *ioaddr = tp->mmio_addr;
1622 unsigned long flags;
1623
1624 if (!netif_running(dev))
1625 return 0;
1626
1627 netif_device_detach(dev);
1628 netif_stop_queue(dev);
1629 spin_lock_irqsave(&tp->lock, flags);
1630
1631 /* Disable interrupts, stop Rx and Tx */
1632 RTL_W16(IntrMask, 0);
1633 RTL_W8(ChipCmd, 0);
1634
1635 /* Update the error counts. */
1636 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
1637 RTL_W32(RxMissed, 0);
1638 spin_unlock_irqrestore(&tp->lock, flags);
1639
1640 return 0;
1641 }
1642
1643 static int rtl8169_resume(struct pci_dev *pdev)
1644 {
1645 struct net_device *dev = pci_get_drvdata(pdev);
1646
1647 if (!netif_running(dev))
1648 return 0;
1649
1650 netif_device_attach(dev);
1651 rtl8169_hw_start(dev);
1652
1653 return 0;
1654 }
1655
1656 #endif /* CONFIG_PM */
1657
1658 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
1659 struct net_device *dev)
1660 {
1661 unsigned int mtu = dev->mtu;
1662
1663 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1664 }
1665
1666 static int rtl8169_open(struct net_device *dev)
1667 {
1668 struct rtl8169_private *tp = netdev_priv(dev);
1669 struct pci_dev *pdev = tp->pci_dev;
1670 int retval;
1671
1672 rtl8169_set_rxbufsize(tp, dev);
1673
1674 retval =
1675 request_irq(dev->irq, rtl8169_interrupt, SA_SHIRQ, dev->name, dev);
1676 if (retval < 0)
1677 goto out;
1678
1679 retval = -ENOMEM;
1680
1681 /*
1682 * Rx and Tx desscriptors needs 256 bytes alignment.
1683 * pci_alloc_consistent provides more.
1684 */
1685 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
1686 &tp->TxPhyAddr);
1687 if (!tp->TxDescArray)
1688 goto err_free_irq;
1689
1690 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
1691 &tp->RxPhyAddr);
1692 if (!tp->RxDescArray)
1693 goto err_free_tx;
1694
1695 retval = rtl8169_init_ring(dev);
1696 if (retval < 0)
1697 goto err_free_rx;
1698
1699 INIT_WORK(&tp->task, NULL, dev);
1700
1701 rtl8169_hw_start(dev);
1702
1703 rtl8169_request_timer(dev);
1704
1705 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
1706 out:
1707 return retval;
1708
1709 err_free_rx:
1710 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
1711 tp->RxPhyAddr);
1712 err_free_tx:
1713 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
1714 tp->TxPhyAddr);
1715 err_free_irq:
1716 free_irq(dev->irq, dev);
1717 goto out;
1718 }
1719
1720 static void rtl8169_hw_reset(void __iomem *ioaddr)
1721 {
1722 /* Disable interrupts */
1723 rtl8169_irq_mask_and_ack(ioaddr);
1724
1725 /* Reset the chipset */
1726 RTL_W8(ChipCmd, CmdReset);
1727
1728 /* PCI commit */
1729 RTL_R8(ChipCmd);
1730 }
1731
1732 static void
1733 rtl8169_hw_start(struct net_device *dev)
1734 {
1735 struct rtl8169_private *tp = netdev_priv(dev);
1736 void __iomem *ioaddr = tp->mmio_addr;
1737 u32 i;
1738
1739 /* Soft reset the chip. */
1740 RTL_W8(ChipCmd, CmdReset);
1741
1742 /* Check that the chip has finished the reset. */
1743 for (i = 1000; i > 0; i--) {
1744 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1745 break;
1746 udelay(10);
1747 }
1748
1749 RTL_W8(Cfg9346, Cfg9346_Unlock);
1750 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1751 RTL_W8(EarlyTxThres, EarlyTxThld);
1752
1753 /* Low hurts. Let's disable the filtering. */
1754 RTL_W16(RxMaxSize, 16383);
1755
1756 /* Set Rx Config register */
1757 i = rtl8169_rx_config |
1758 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1759 RTL_W32(RxConfig, i);
1760
1761 /* Set DMA burst size and Interframe Gap Time */
1762 RTL_W32(TxConfig,
1763 (TX_DMA_BURST << TxDMAShift) | (InterFrameGap <<
1764 TxInterFrameGapShift));
1765 tp->cp_cmd |= RTL_R16(CPlusCmd);
1766 RTL_W16(CPlusCmd, tp->cp_cmd);
1767
1768 if ((tp->mac_version == RTL_GIGA_MAC_VER_D) ||
1769 (tp->mac_version == RTL_GIGA_MAC_VER_E)) {
1770 dprintk(KERN_INFO PFX "Set MAC Reg C+CR Offset 0xE0. "
1771 "Bit-3 and bit-14 MUST be 1\n");
1772 tp->cp_cmd |= (1 << 14) | PCIMulRW;
1773 RTL_W16(CPlusCmd, tp->cp_cmd);
1774 }
1775
1776 /*
1777 * Undocumented corner. Supposedly:
1778 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
1779 */
1780 RTL_W16(IntrMitigate, 0x0000);
1781
1782 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr & DMA_32BIT_MASK));
1783 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr >> 32));
1784 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr & DMA_32BIT_MASK));
1785 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr >> 32));
1786 RTL_W8(Cfg9346, Cfg9346_Lock);
1787 udelay(10);
1788
1789 RTL_W32(RxMissed, 0);
1790
1791 rtl8169_set_rx_mode(dev);
1792
1793 /* no early-rx interrupts */
1794 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
1795
1796 /* Enable all known interrupts by setting the interrupt mask. */
1797 RTL_W16(IntrMask, rtl8169_intr_mask);
1798
1799 netif_start_queue(dev);
1800 }
1801
1802 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
1803 {
1804 struct rtl8169_private *tp = netdev_priv(dev);
1805 int ret = 0;
1806
1807 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
1808 return -EINVAL;
1809
1810 dev->mtu = new_mtu;
1811
1812 if (!netif_running(dev))
1813 goto out;
1814
1815 rtl8169_down(dev);
1816
1817 rtl8169_set_rxbufsize(tp, dev);
1818
1819 ret = rtl8169_init_ring(dev);
1820 if (ret < 0)
1821 goto out;
1822
1823 netif_poll_enable(dev);
1824
1825 rtl8169_hw_start(dev);
1826
1827 rtl8169_request_timer(dev);
1828
1829 out:
1830 return ret;
1831 }
1832
1833 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
1834 {
1835 desc->addr = 0x0badbadbadbadbadull;
1836 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
1837 }
1838
1839 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
1840 struct sk_buff **sk_buff, struct RxDesc *desc)
1841 {
1842 struct pci_dev *pdev = tp->pci_dev;
1843
1844 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
1845 PCI_DMA_FROMDEVICE);
1846 dev_kfree_skb(*sk_buff);
1847 *sk_buff = NULL;
1848 rtl8169_make_unusable_by_asic(desc);
1849 }
1850
1851 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
1852 {
1853 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
1854
1855 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
1856 }
1857
1858 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
1859 u32 rx_buf_sz)
1860 {
1861 desc->addr = cpu_to_le64(mapping);
1862 wmb();
1863 rtl8169_mark_to_asic(desc, rx_buf_sz);
1864 }
1865
1866 static int rtl8169_alloc_rx_skb(struct pci_dev *pdev, struct sk_buff **sk_buff,
1867 struct RxDesc *desc, int rx_buf_sz)
1868 {
1869 struct sk_buff *skb;
1870 dma_addr_t mapping;
1871 int ret = 0;
1872
1873 skb = dev_alloc_skb(rx_buf_sz + NET_IP_ALIGN);
1874 if (!skb)
1875 goto err_out;
1876
1877 skb_reserve(skb, NET_IP_ALIGN);
1878 *sk_buff = skb;
1879
1880 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
1881 PCI_DMA_FROMDEVICE);
1882
1883 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
1884
1885 out:
1886 return ret;
1887
1888 err_out:
1889 ret = -ENOMEM;
1890 rtl8169_make_unusable_by_asic(desc);
1891 goto out;
1892 }
1893
1894 static void rtl8169_rx_clear(struct rtl8169_private *tp)
1895 {
1896 int i;
1897
1898 for (i = 0; i < NUM_RX_DESC; i++) {
1899 if (tp->Rx_skbuff[i]) {
1900 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
1901 tp->RxDescArray + i);
1902 }
1903 }
1904 }
1905
1906 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
1907 u32 start, u32 end)
1908 {
1909 u32 cur;
1910
1911 for (cur = start; end - cur > 0; cur++) {
1912 int ret, i = cur % NUM_RX_DESC;
1913
1914 if (tp->Rx_skbuff[i])
1915 continue;
1916
1917 ret = rtl8169_alloc_rx_skb(tp->pci_dev, tp->Rx_skbuff + i,
1918 tp->RxDescArray + i, tp->rx_buf_sz);
1919 if (ret < 0)
1920 break;
1921 }
1922 return cur - start;
1923 }
1924
1925 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
1926 {
1927 desc->opts1 |= cpu_to_le32(RingEnd);
1928 }
1929
1930 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
1931 {
1932 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
1933 }
1934
1935 static int rtl8169_init_ring(struct net_device *dev)
1936 {
1937 struct rtl8169_private *tp = netdev_priv(dev);
1938
1939 rtl8169_init_ring_indexes(tp);
1940
1941 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
1942 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
1943
1944 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
1945 goto err_out;
1946
1947 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
1948
1949 return 0;
1950
1951 err_out:
1952 rtl8169_rx_clear(tp);
1953 return -ENOMEM;
1954 }
1955
1956 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
1957 struct TxDesc *desc)
1958 {
1959 unsigned int len = tx_skb->len;
1960
1961 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
1962 desc->opts1 = 0x00;
1963 desc->opts2 = 0x00;
1964 desc->addr = 0x00;
1965 tx_skb->len = 0;
1966 }
1967
1968 static void rtl8169_tx_clear(struct rtl8169_private *tp)
1969 {
1970 unsigned int i;
1971
1972 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
1973 unsigned int entry = i % NUM_TX_DESC;
1974 struct ring_info *tx_skb = tp->tx_skb + entry;
1975 unsigned int len = tx_skb->len;
1976
1977 if (len) {
1978 struct sk_buff *skb = tx_skb->skb;
1979
1980 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
1981 tp->TxDescArray + entry);
1982 if (skb) {
1983 dev_kfree_skb(skb);
1984 tx_skb->skb = NULL;
1985 }
1986 tp->stats.tx_dropped++;
1987 }
1988 }
1989 tp->cur_tx = tp->dirty_tx = 0;
1990 }
1991
1992 static void rtl8169_schedule_work(struct net_device *dev, void (*task)(void *))
1993 {
1994 struct rtl8169_private *tp = netdev_priv(dev);
1995
1996 PREPARE_WORK(&tp->task, task, dev);
1997 schedule_delayed_work(&tp->task, 4);
1998 }
1999
2000 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2001 {
2002 struct rtl8169_private *tp = netdev_priv(dev);
2003 void __iomem *ioaddr = tp->mmio_addr;
2004
2005 synchronize_irq(dev->irq);
2006
2007 /* Wait for any pending NAPI task to complete */
2008 netif_poll_disable(dev);
2009
2010 rtl8169_irq_mask_and_ack(ioaddr);
2011
2012 netif_poll_enable(dev);
2013 }
2014
2015 static void rtl8169_reinit_task(void *_data)
2016 {
2017 struct net_device *dev = _data;
2018 int ret;
2019
2020 if (netif_running(dev)) {
2021 rtl8169_wait_for_quiescence(dev);
2022 rtl8169_close(dev);
2023 }
2024
2025 ret = rtl8169_open(dev);
2026 if (unlikely(ret < 0)) {
2027 if (net_ratelimit()) {
2028 struct rtl8169_private *tp = netdev_priv(dev);
2029
2030 if (netif_msg_drv(tp)) {
2031 printk(PFX KERN_ERR
2032 "%s: reinit failure (status = %d)."
2033 " Rescheduling.\n", dev->name, ret);
2034 }
2035 }
2036 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2037 }
2038 }
2039
2040 static void rtl8169_reset_task(void *_data)
2041 {
2042 struct net_device *dev = _data;
2043 struct rtl8169_private *tp = netdev_priv(dev);
2044
2045 if (!netif_running(dev))
2046 return;
2047
2048 rtl8169_wait_for_quiescence(dev);
2049
2050 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr);
2051 rtl8169_tx_clear(tp);
2052
2053 if (tp->dirty_rx == tp->cur_rx) {
2054 rtl8169_init_ring_indexes(tp);
2055 rtl8169_hw_start(dev);
2056 netif_wake_queue(dev);
2057 } else {
2058 if (net_ratelimit()) {
2059 struct rtl8169_private *tp = netdev_priv(dev);
2060
2061 if (netif_msg_intr(tp)) {
2062 printk(PFX KERN_EMERG
2063 "%s: Rx buffers shortage\n", dev->name);
2064 }
2065 }
2066 rtl8169_schedule_work(dev, rtl8169_reset_task);
2067 }
2068 }
2069
2070 static void rtl8169_tx_timeout(struct net_device *dev)
2071 {
2072 struct rtl8169_private *tp = netdev_priv(dev);
2073
2074 rtl8169_hw_reset(tp->mmio_addr);
2075
2076 /* Let's wait a bit while any (async) irq lands on */
2077 rtl8169_schedule_work(dev, rtl8169_reset_task);
2078 }
2079
2080 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2081 u32 opts1)
2082 {
2083 struct skb_shared_info *info = skb_shinfo(skb);
2084 unsigned int cur_frag, entry;
2085 struct TxDesc *txd;
2086
2087 entry = tp->cur_tx;
2088 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2089 skb_frag_t *frag = info->frags + cur_frag;
2090 dma_addr_t mapping;
2091 u32 status, len;
2092 void *addr;
2093
2094 entry = (entry + 1) % NUM_TX_DESC;
2095
2096 txd = tp->TxDescArray + entry;
2097 len = frag->size;
2098 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2099 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2100
2101 /* anti gcc 2.95.3 bugware (sic) */
2102 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2103
2104 txd->opts1 = cpu_to_le32(status);
2105 txd->addr = cpu_to_le64(mapping);
2106
2107 tp->tx_skb[entry].len = len;
2108 }
2109
2110 if (cur_frag) {
2111 tp->tx_skb[entry].skb = skb;
2112 txd->opts1 |= cpu_to_le32(LastFrag);
2113 }
2114
2115 return cur_frag;
2116 }
2117
2118 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2119 {
2120 if (dev->features & NETIF_F_TSO) {
2121 u32 mss = skb_shinfo(skb)->tso_size;
2122
2123 if (mss)
2124 return LargeSend | ((mss & MSSMask) << MSSShift);
2125 }
2126 if (skb->ip_summed == CHECKSUM_HW) {
2127 const struct iphdr *ip = skb->nh.iph;
2128
2129 if (ip->protocol == IPPROTO_TCP)
2130 return IPCS | TCPCS;
2131 else if (ip->protocol == IPPROTO_UDP)
2132 return IPCS | UDPCS;
2133 WARN_ON(1); /* we need a WARN() */
2134 }
2135 return 0;
2136 }
2137
2138 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2139 {
2140 struct rtl8169_private *tp = netdev_priv(dev);
2141 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2142 struct TxDesc *txd = tp->TxDescArray + entry;
2143 void __iomem *ioaddr = tp->mmio_addr;
2144 dma_addr_t mapping;
2145 u32 status, len;
2146 u32 opts1;
2147 int ret = 0;
2148
2149 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2150 if (netif_msg_drv(tp)) {
2151 printk(KERN_ERR
2152 "%s: BUG! Tx Ring full when queue awake!\n",
2153 dev->name);
2154 }
2155 goto err_stop;
2156 }
2157
2158 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2159 goto err_stop;
2160
2161 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2162
2163 frags = rtl8169_xmit_frags(tp, skb, opts1);
2164 if (frags) {
2165 len = skb_headlen(skb);
2166 opts1 |= FirstFrag;
2167 } else {
2168 len = skb->len;
2169
2170 if (unlikely(len < ETH_ZLEN)) {
2171 skb = skb_padto(skb, ETH_ZLEN);
2172 if (!skb)
2173 goto err_update_stats;
2174 len = ETH_ZLEN;
2175 }
2176
2177 opts1 |= FirstFrag | LastFrag;
2178 tp->tx_skb[entry].skb = skb;
2179 }
2180
2181 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2182
2183 tp->tx_skb[entry].len = len;
2184 txd->addr = cpu_to_le64(mapping);
2185 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2186
2187 wmb();
2188
2189 /* anti gcc 2.95.3 bugware (sic) */
2190 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2191 txd->opts1 = cpu_to_le32(status);
2192
2193 dev->trans_start = jiffies;
2194
2195 tp->cur_tx += frags + 1;
2196
2197 smp_wmb();
2198
2199 RTL_W8(TxPoll, 0x40); /* set polling bit */
2200
2201 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2202 netif_stop_queue(dev);
2203 smp_rmb();
2204 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2205 netif_wake_queue(dev);
2206 }
2207
2208 out:
2209 return ret;
2210
2211 err_stop:
2212 netif_stop_queue(dev);
2213 ret = 1;
2214 err_update_stats:
2215 tp->stats.tx_dropped++;
2216 goto out;
2217 }
2218
2219 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2220 {
2221 struct rtl8169_private *tp = netdev_priv(dev);
2222 struct pci_dev *pdev = tp->pci_dev;
2223 void __iomem *ioaddr = tp->mmio_addr;
2224 u16 pci_status, pci_cmd;
2225
2226 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2227 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2228
2229 if (netif_msg_intr(tp)) {
2230 printk(KERN_ERR
2231 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2232 dev->name, pci_cmd, pci_status);
2233 }
2234
2235 /*
2236 * The recovery sequence below admits a very elaborated explanation:
2237 * - it seems to work;
2238 * - I did not see what else could be done.
2239 *
2240 * Feel free to adjust to your needs.
2241 */
2242 pci_write_config_word(pdev, PCI_COMMAND,
2243 pci_cmd | PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
2244
2245 pci_write_config_word(pdev, PCI_STATUS,
2246 pci_status & (PCI_STATUS_DETECTED_PARITY |
2247 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2248 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2249
2250 /* The infamous DAC f*ckup only happens at boot time */
2251 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2252 if (netif_msg_intr(tp))
2253 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2254 tp->cp_cmd &= ~PCIDAC;
2255 RTL_W16(CPlusCmd, tp->cp_cmd);
2256 dev->features &= ~NETIF_F_HIGHDMA;
2257 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2258 }
2259
2260 rtl8169_hw_reset(ioaddr);
2261 }
2262
2263 static void
2264 rtl8169_tx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2265 void __iomem *ioaddr)
2266 {
2267 unsigned int dirty_tx, tx_left;
2268
2269 assert(dev != NULL);
2270 assert(tp != NULL);
2271 assert(ioaddr != NULL);
2272
2273 dirty_tx = tp->dirty_tx;
2274 smp_rmb();
2275 tx_left = tp->cur_tx - dirty_tx;
2276
2277 while (tx_left > 0) {
2278 unsigned int entry = dirty_tx % NUM_TX_DESC;
2279 struct ring_info *tx_skb = tp->tx_skb + entry;
2280 u32 len = tx_skb->len;
2281 u32 status;
2282
2283 rmb();
2284 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2285 if (status & DescOwn)
2286 break;
2287
2288 tp->stats.tx_bytes += len;
2289 tp->stats.tx_packets++;
2290
2291 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
2292
2293 if (status & LastFrag) {
2294 dev_kfree_skb_irq(tx_skb->skb);
2295 tx_skb->skb = NULL;
2296 }
2297 dirty_tx++;
2298 tx_left--;
2299 }
2300
2301 if (tp->dirty_tx != dirty_tx) {
2302 tp->dirty_tx = dirty_tx;
2303 smp_wmb();
2304 if (netif_queue_stopped(dev) &&
2305 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
2306 netif_wake_queue(dev);
2307 }
2308 }
2309 }
2310
2311 static inline int rtl8169_fragmented_frame(u32 status)
2312 {
2313 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2314 }
2315
2316 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2317 {
2318 u32 opts1 = le32_to_cpu(desc->opts1);
2319 u32 status = opts1 & RxProtoMask;
2320
2321 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
2322 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
2323 ((status == RxProtoIP) && !(opts1 & IPFail)))
2324 skb->ip_summed = CHECKSUM_UNNECESSARY;
2325 else
2326 skb->ip_summed = CHECKSUM_NONE;
2327 }
2328
2329 static inline int rtl8169_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
2330 struct RxDesc *desc, int rx_buf_sz)
2331 {
2332 int ret = -1;
2333
2334 if (pkt_size < rx_copybreak) {
2335 struct sk_buff *skb;
2336
2337 skb = dev_alloc_skb(pkt_size + NET_IP_ALIGN);
2338 if (skb) {
2339 skb_reserve(skb, NET_IP_ALIGN);
2340 eth_copy_and_sum(skb, sk_buff[0]->data, pkt_size, 0);
2341 *sk_buff = skb;
2342 rtl8169_mark_to_asic(desc, rx_buf_sz);
2343 ret = 0;
2344 }
2345 }
2346 return ret;
2347 }
2348
2349 static int
2350 rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2351 void __iomem *ioaddr)
2352 {
2353 unsigned int cur_rx, rx_left;
2354 unsigned int delta, count;
2355
2356 assert(dev != NULL);
2357 assert(tp != NULL);
2358 assert(ioaddr != NULL);
2359
2360 cur_rx = tp->cur_rx;
2361 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
2362 rx_left = rtl8169_rx_quota(rx_left, (u32) dev->quota);
2363
2364 for (; rx_left > 0; rx_left--, cur_rx++) {
2365 unsigned int entry = cur_rx % NUM_RX_DESC;
2366 struct RxDesc *desc = tp->RxDescArray + entry;
2367 u32 status;
2368
2369 rmb();
2370 status = le32_to_cpu(desc->opts1);
2371
2372 if (status & DescOwn)
2373 break;
2374 if (unlikely(status & RxRES)) {
2375 if (netif_msg_rx_err(tp)) {
2376 printk(KERN_INFO
2377 "%s: Rx ERROR. status = %08x\n",
2378 dev->name, status);
2379 }
2380 tp->stats.rx_errors++;
2381 if (status & (RxRWT | RxRUNT))
2382 tp->stats.rx_length_errors++;
2383 if (status & RxCRC)
2384 tp->stats.rx_crc_errors++;
2385 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2386 } else {
2387 struct sk_buff *skb = tp->Rx_skbuff[entry];
2388 int pkt_size = (status & 0x00001FFF) - 4;
2389 void (*pci_action)(struct pci_dev *, dma_addr_t,
2390 size_t, int) = pci_dma_sync_single_for_device;
2391
2392 /*
2393 * The driver does not support incoming fragmented
2394 * frames. They are seen as a symptom of over-mtu
2395 * sized frames.
2396 */
2397 if (unlikely(rtl8169_fragmented_frame(status))) {
2398 tp->stats.rx_dropped++;
2399 tp->stats.rx_length_errors++;
2400 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2401 continue;
2402 }
2403
2404 rtl8169_rx_csum(skb, desc);
2405
2406 pci_dma_sync_single_for_cpu(tp->pci_dev,
2407 le64_to_cpu(desc->addr), tp->rx_buf_sz,
2408 PCI_DMA_FROMDEVICE);
2409
2410 if (rtl8169_try_rx_copy(&skb, pkt_size, desc,
2411 tp->rx_buf_sz)) {
2412 pci_action = pci_unmap_single;
2413 tp->Rx_skbuff[entry] = NULL;
2414 }
2415
2416 pci_action(tp->pci_dev, le64_to_cpu(desc->addr),
2417 tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
2418
2419 skb->dev = dev;
2420 skb_put(skb, pkt_size);
2421 skb->protocol = eth_type_trans(skb, dev);
2422
2423 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
2424 rtl8169_rx_skb(skb);
2425
2426 dev->last_rx = jiffies;
2427 tp->stats.rx_bytes += pkt_size;
2428 tp->stats.rx_packets++;
2429 }
2430 }
2431
2432 count = cur_rx - tp->cur_rx;
2433 tp->cur_rx = cur_rx;
2434
2435 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
2436 if (!delta && count && netif_msg_intr(tp))
2437 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
2438 tp->dirty_rx += delta;
2439
2440 /*
2441 * FIXME: until there is periodic timer to try and refill the ring,
2442 * a temporary shortage may definitely kill the Rx process.
2443 * - disable the asic to try and avoid an overflow and kick it again
2444 * after refill ?
2445 * - how do others driver handle this condition (Uh oh...).
2446 */
2447 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
2448 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
2449
2450 return count;
2451 }
2452
2453 /* The interrupt handler does all of the Rx thread work and cleans up after the Tx thread. */
2454 static irqreturn_t
2455 rtl8169_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
2456 {
2457 struct net_device *dev = (struct net_device *) dev_instance;
2458 struct rtl8169_private *tp = netdev_priv(dev);
2459 int boguscnt = max_interrupt_work;
2460 void __iomem *ioaddr = tp->mmio_addr;
2461 int status;
2462 int handled = 0;
2463
2464 do {
2465 status = RTL_R16(IntrStatus);
2466
2467 /* hotplug/major error/no more work/shared irq */
2468 if ((status == 0xFFFF) || !status)
2469 break;
2470
2471 handled = 1;
2472
2473 if (unlikely(!netif_running(dev))) {
2474 rtl8169_asic_down(ioaddr);
2475 goto out;
2476 }
2477
2478 status &= tp->intr_mask;
2479 RTL_W16(IntrStatus,
2480 (status & RxFIFOOver) ? (status | RxOverflow) : status);
2481
2482 if (!(status & rtl8169_intr_mask))
2483 break;
2484
2485 if (unlikely(status & SYSErr)) {
2486 rtl8169_pcierr_interrupt(dev);
2487 break;
2488 }
2489
2490 if (status & LinkChg)
2491 rtl8169_check_link_status(dev, tp, ioaddr);
2492
2493 #ifdef CONFIG_R8169_NAPI
2494 RTL_W16(IntrMask, rtl8169_intr_mask & ~rtl8169_napi_event);
2495 tp->intr_mask = ~rtl8169_napi_event;
2496
2497 if (likely(netif_rx_schedule_prep(dev)))
2498 __netif_rx_schedule(dev);
2499 else if (netif_msg_intr(tp)) {
2500 printk(KERN_INFO "%s: interrupt %04x taken in poll\n",
2501 dev->name, status);
2502 }
2503 break;
2504 #else
2505 /* Rx interrupt */
2506 if (status & (RxOK | RxOverflow | RxFIFOOver)) {
2507 rtl8169_rx_interrupt(dev, tp, ioaddr);
2508 }
2509 /* Tx interrupt */
2510 if (status & (TxOK | TxErr))
2511 rtl8169_tx_interrupt(dev, tp, ioaddr);
2512 #endif
2513
2514 boguscnt--;
2515 } while (boguscnt > 0);
2516
2517 if (boguscnt <= 0) {
2518 if (net_ratelimit() && netif_msg_intr(tp)) {
2519 printk(KERN_WARNING
2520 "%s: Too much work at interrupt!\n", dev->name);
2521 }
2522 /* Clear all interrupt sources. */
2523 RTL_W16(IntrStatus, 0xffff);
2524 }
2525 out:
2526 return IRQ_RETVAL(handled);
2527 }
2528
2529 #ifdef CONFIG_R8169_NAPI
2530 static int rtl8169_poll(struct net_device *dev, int *budget)
2531 {
2532 unsigned int work_done, work_to_do = min(*budget, dev->quota);
2533 struct rtl8169_private *tp = netdev_priv(dev);
2534 void __iomem *ioaddr = tp->mmio_addr;
2535
2536 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr);
2537 rtl8169_tx_interrupt(dev, tp, ioaddr);
2538
2539 *budget -= work_done;
2540 dev->quota -= work_done;
2541
2542 if (work_done < work_to_do) {
2543 netif_rx_complete(dev);
2544 tp->intr_mask = 0xffff;
2545 /*
2546 * 20040426: the barrier is not strictly required but the
2547 * behavior of the irq handler could be less predictable
2548 * without it. Btw, the lack of flush for the posted pci
2549 * write is safe - FR
2550 */
2551 smp_wmb();
2552 RTL_W16(IntrMask, rtl8169_intr_mask);
2553 }
2554
2555 return (work_done >= work_to_do);
2556 }
2557 #endif
2558
2559 static void rtl8169_down(struct net_device *dev)
2560 {
2561 struct rtl8169_private *tp = netdev_priv(dev);
2562 void __iomem *ioaddr = tp->mmio_addr;
2563 unsigned int poll_locked = 0;
2564
2565 rtl8169_delete_timer(dev);
2566
2567 netif_stop_queue(dev);
2568
2569 flush_scheduled_work();
2570
2571 core_down:
2572 spin_lock_irq(&tp->lock);
2573
2574 rtl8169_asic_down(ioaddr);
2575
2576 /* Update the error counts. */
2577 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2578 RTL_W32(RxMissed, 0);
2579
2580 spin_unlock_irq(&tp->lock);
2581
2582 synchronize_irq(dev->irq);
2583
2584 if (!poll_locked) {
2585 netif_poll_disable(dev);
2586 poll_locked++;
2587 }
2588
2589 /* Give a racing hard_start_xmit a few cycles to complete. */
2590 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
2591
2592 /*
2593 * And now for the 50k$ question: are IRQ disabled or not ?
2594 *
2595 * Two paths lead here:
2596 * 1) dev->close
2597 * -> netif_running() is available to sync the current code and the
2598 * IRQ handler. See rtl8169_interrupt for details.
2599 * 2) dev->change_mtu
2600 * -> rtl8169_poll can not be issued again and re-enable the
2601 * interruptions. Let's simply issue the IRQ down sequence again.
2602 */
2603 if (RTL_R16(IntrMask))
2604 goto core_down;
2605
2606 rtl8169_tx_clear(tp);
2607
2608 rtl8169_rx_clear(tp);
2609 }
2610
2611 static int rtl8169_close(struct net_device *dev)
2612 {
2613 struct rtl8169_private *tp = netdev_priv(dev);
2614 struct pci_dev *pdev = tp->pci_dev;
2615
2616 rtl8169_down(dev);
2617
2618 free_irq(dev->irq, dev);
2619
2620 netif_poll_enable(dev);
2621
2622 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2623 tp->RxPhyAddr);
2624 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2625 tp->TxPhyAddr);
2626 tp->TxDescArray = NULL;
2627 tp->RxDescArray = NULL;
2628
2629 return 0;
2630 }
2631
2632 static void
2633 rtl8169_set_rx_mode(struct net_device *dev)
2634 {
2635 struct rtl8169_private *tp = netdev_priv(dev);
2636 void __iomem *ioaddr = tp->mmio_addr;
2637 unsigned long flags;
2638 u32 mc_filter[2]; /* Multicast hash filter */
2639 int i, rx_mode;
2640 u32 tmp = 0;
2641
2642 if (dev->flags & IFF_PROMISC) {
2643 /* Unconditionally log net taps. */
2644 if (netif_msg_link(tp)) {
2645 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2646 dev->name);
2647 }
2648 rx_mode =
2649 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2650 AcceptAllPhys;
2651 mc_filter[1] = mc_filter[0] = 0xffffffff;
2652 } else if ((dev->mc_count > multicast_filter_limit)
2653 || (dev->flags & IFF_ALLMULTI)) {
2654 /* Too many to filter perfectly -- accept all multicasts. */
2655 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2656 mc_filter[1] = mc_filter[0] = 0xffffffff;
2657 } else {
2658 struct dev_mc_list *mclist;
2659 rx_mode = AcceptBroadcast | AcceptMyPhys;
2660 mc_filter[1] = mc_filter[0] = 0;
2661 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2662 i++, mclist = mclist->next) {
2663 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2664 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2665 rx_mode |= AcceptMulticast;
2666 }
2667 }
2668
2669 spin_lock_irqsave(&tp->lock, flags);
2670
2671 tmp = rtl8169_rx_config | rx_mode |
2672 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2673
2674 RTL_W32(RxConfig, tmp);
2675 RTL_W32(MAR0 + 0, mc_filter[0]);
2676 RTL_W32(MAR0 + 4, mc_filter[1]);
2677
2678 spin_unlock_irqrestore(&tp->lock, flags);
2679 }
2680
2681 /**
2682 * rtl8169_get_stats - Get rtl8169 read/write statistics
2683 * @dev: The Ethernet Device to get statistics for
2684 *
2685 * Get TX/RX statistics for rtl8169
2686 */
2687 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
2688 {
2689 struct rtl8169_private *tp = netdev_priv(dev);
2690 void __iomem *ioaddr = tp->mmio_addr;
2691 unsigned long flags;
2692
2693 if (netif_running(dev)) {
2694 spin_lock_irqsave(&tp->lock, flags);
2695 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2696 RTL_W32(RxMissed, 0);
2697 spin_unlock_irqrestore(&tp->lock, flags);
2698 }
2699
2700 return &tp->stats;
2701 }
2702
2703 static struct pci_driver rtl8169_pci_driver = {
2704 .name = MODULENAME,
2705 .id_table = rtl8169_pci_tbl,
2706 .probe = rtl8169_init_one,
2707 .remove = __devexit_p(rtl8169_remove_one),
2708 #ifdef CONFIG_PM
2709 .suspend = rtl8169_suspend,
2710 .resume = rtl8169_resume,
2711 #endif
2712 };
2713
2714 static int __init
2715 rtl8169_init_module(void)
2716 {
2717 return pci_module_init(&rtl8169_pci_driver);
2718 }
2719
2720 static void __exit
2721 rtl8169_cleanup_module(void)
2722 {
2723 pci_unregister_driver(&rtl8169_pci_driver);
2724 }
2725
2726 module_init(rtl8169_init_module);
2727 module_exit(rtl8169_cleanup_module);
SocketAccessConTroL development