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Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
[deliverable/linux.git] / drivers / net / r8169.c
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_IFUP | NETIF_MSG_IFDOWN)
96
97 #define TX_BUFFS_AVAIL(tp) \
98 (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
99
100 #ifdef CONFIG_R8169_NAPI
101 #define rtl8169_rx_skb netif_receive_skb
102 #define rtl8169_rx_hwaccel_skb vlan_hwaccel_receive_skb
103 #define rtl8169_rx_quota(count, quota) min(count, quota)
104 #else
105 #define rtl8169_rx_skb netif_rx
106 #define rtl8169_rx_hwaccel_skb vlan_hwaccel_rx
107 #define rtl8169_rx_quota(count, quota) count
108 #endif
109
110 /* media options */
111 #define MAX_UNITS 8
112 static int media[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
113 static int num_media = 0;
114
115 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
116 static const int max_interrupt_work = 20;
117
118 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
119 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
120 static const int multicast_filter_limit = 32;
121
122 /* MAC address length */
123 #define MAC_ADDR_LEN 6
124
125 #define RX_FIFO_THRESH 7 /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
126 #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
127 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
128 #define EarlyTxThld 0x3F /* 0x3F means NO early transmit */
129 #define RxPacketMaxSize 0x3FE8 /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
130 #define SafeMtu 0x1c20 /* ... actually life sucks beyond ~7k */
131 #define InterFrameGap 0x03 /* 3 means InterFrameGap = the shortest one */
132
133 #define R8169_REGS_SIZE 256
134 #define R8169_NAPI_WEIGHT 64
135 #define NUM_TX_DESC 64 /* Number of Tx descriptor registers */
136 #define NUM_RX_DESC 256 /* Number of Rx descriptor registers */
137 #define RX_BUF_SIZE 1536 /* Rx Buffer size */
138 #define R8169_TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc))
139 #define R8169_RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))
140
141 #define RTL8169_TX_TIMEOUT (6*HZ)
142 #define RTL8169_PHY_TIMEOUT (10*HZ)
143
144 /* write/read MMIO register */
145 #define RTL_W8(reg, val8) writeb ((val8), ioaddr + (reg))
146 #define RTL_W16(reg, val16) writew ((val16), ioaddr + (reg))
147 #define RTL_W32(reg, val32) writel ((val32), ioaddr + (reg))
148 #define RTL_R8(reg) readb (ioaddr + (reg))
149 #define RTL_R16(reg) readw (ioaddr + (reg))
150 #define RTL_R32(reg) ((unsigned long) readl (ioaddr + (reg)))
151
152 enum mac_version {
153 RTL_GIGA_MAC_VER_01 = 0x00,
154 RTL_GIGA_MAC_VER_02 = 0x01,
155 RTL_GIGA_MAC_VER_03 = 0x02,
156 RTL_GIGA_MAC_VER_04 = 0x03,
157 RTL_GIGA_MAC_VER_05 = 0x04,
158 RTL_GIGA_MAC_VER_11 = 0x0b,
159 RTL_GIGA_MAC_VER_12 = 0x0c,
160 RTL_GIGA_MAC_VER_13 = 0x0d,
161 RTL_GIGA_MAC_VER_14 = 0x0e,
162 RTL_GIGA_MAC_VER_15 = 0x0f
163 };
164
165 enum phy_version {
166 RTL_GIGA_PHY_VER_C = 0x03, /* PHY Reg 0x03 bit0-3 == 0x0000 */
167 RTL_GIGA_PHY_VER_D = 0x04, /* PHY Reg 0x03 bit0-3 == 0x0000 */
168 RTL_GIGA_PHY_VER_E = 0x05, /* PHY Reg 0x03 bit0-3 == 0x0000 */
169 RTL_GIGA_PHY_VER_F = 0x06, /* PHY Reg 0x03 bit0-3 == 0x0001 */
170 RTL_GIGA_PHY_VER_G = 0x07, /* PHY Reg 0x03 bit0-3 == 0x0002 */
171 RTL_GIGA_PHY_VER_H = 0x08, /* PHY Reg 0x03 bit0-3 == 0x0003 */
172 };
173
174 #define _R(NAME,MAC,MASK) \
175 { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
176
177 static const struct {
178 const char *name;
179 u8 mac_version;
180 u32 RxConfigMask; /* Clears the bits supported by this chip */
181 } rtl_chip_info[] = {
182 _R("RTL8169", RTL_GIGA_MAC_VER_01, 0xff7e1880),
183 _R("RTL8169s/8110s", RTL_GIGA_MAC_VER_02, 0xff7e1880),
184 _R("RTL8169s/8110s", RTL_GIGA_MAC_VER_03, 0xff7e1880),
185 _R("RTL8169sb/8110sb", RTL_GIGA_MAC_VER_04, 0xff7e1880),
186 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_05, 0xff7e1880),
187 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
188 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
189 _R("RTL8101e", RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
190 _R("RTL8100e", RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
191 _R("RTL8100e", RTL_GIGA_MAC_VER_15, 0xff7e1880) // PCI-E 8139
192 };
193 #undef _R
194
195 enum cfg_version {
196 RTL_CFG_0 = 0x00,
197 RTL_CFG_1,
198 RTL_CFG_2
199 };
200
201 static const struct {
202 unsigned int region;
203 unsigned int align;
204 } rtl_cfg_info[] = {
205 [RTL_CFG_0] = { 1, NET_IP_ALIGN },
206 [RTL_CFG_1] = { 2, NET_IP_ALIGN },
207 [RTL_CFG_2] = { 2, 8 }
208 };
209
210 static struct pci_device_id rtl8169_pci_tbl[] = {
211 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
212 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
213 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167), 0, 0, RTL_CFG_0 },
214 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168), 0, 0, RTL_CFG_2 },
215 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), 0, 0, RTL_CFG_0 },
216 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4300), 0, 0, RTL_CFG_0 },
217 { PCI_DEVICE(0x1259, 0xc107), 0, 0, RTL_CFG_0 },
218 { PCI_DEVICE(0x16ec, 0x0116), 0, 0, RTL_CFG_0 },
219 { PCI_VENDOR_ID_LINKSYS, 0x1032,
220 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
221 {0,},
222 };
223
224 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
225
226 static int rx_copybreak = 200;
227 static int use_dac;
228 static struct {
229 u32 msg_enable;
230 } debug = { -1 };
231
232 enum RTL8169_registers {
233 MAC0 = 0, /* Ethernet hardware address. */
234 MAR0 = 8, /* Multicast filter. */
235 CounterAddrLow = 0x10,
236 CounterAddrHigh = 0x14,
237 TxDescStartAddrLow = 0x20,
238 TxDescStartAddrHigh = 0x24,
239 TxHDescStartAddrLow = 0x28,
240 TxHDescStartAddrHigh = 0x2c,
241 FLASH = 0x30,
242 ERSR = 0x36,
243 ChipCmd = 0x37,
244 TxPoll = 0x38,
245 IntrMask = 0x3C,
246 IntrStatus = 0x3E,
247 TxConfig = 0x40,
248 RxConfig = 0x44,
249 RxMissed = 0x4C,
250 Cfg9346 = 0x50,
251 Config0 = 0x51,
252 Config1 = 0x52,
253 Config2 = 0x53,
254 Config3 = 0x54,
255 Config4 = 0x55,
256 Config5 = 0x56,
257 MultiIntr = 0x5C,
258 PHYAR = 0x60,
259 TBICSR = 0x64,
260 TBI_ANAR = 0x68,
261 TBI_LPAR = 0x6A,
262 PHYstatus = 0x6C,
263 RxMaxSize = 0xDA,
264 CPlusCmd = 0xE0,
265 IntrMitigate = 0xE2,
266 RxDescAddrLow = 0xE4,
267 RxDescAddrHigh = 0xE8,
268 EarlyTxThres = 0xEC,
269 FuncEvent = 0xF0,
270 FuncEventMask = 0xF4,
271 FuncPresetState = 0xF8,
272 FuncForceEvent = 0xFC,
273 };
274
275 enum RTL8169_register_content {
276 /* InterruptStatusBits */
277 SYSErr = 0x8000,
278 PCSTimeout = 0x4000,
279 SWInt = 0x0100,
280 TxDescUnavail = 0x80,
281 RxFIFOOver = 0x40,
282 LinkChg = 0x20,
283 RxOverflow = 0x10,
284 TxErr = 0x08,
285 TxOK = 0x04,
286 RxErr = 0x02,
287 RxOK = 0x01,
288
289 /* RxStatusDesc */
290 RxFOVF = (1 << 23),
291 RxRWT = (1 << 22),
292 RxRES = (1 << 21),
293 RxRUNT = (1 << 20),
294 RxCRC = (1 << 19),
295
296 /* ChipCmdBits */
297 CmdReset = 0x10,
298 CmdRxEnb = 0x08,
299 CmdTxEnb = 0x04,
300 RxBufEmpty = 0x01,
301
302 /* Cfg9346Bits */
303 Cfg9346_Lock = 0x00,
304 Cfg9346_Unlock = 0xC0,
305
306 /* rx_mode_bits */
307 AcceptErr = 0x20,
308 AcceptRunt = 0x10,
309 AcceptBroadcast = 0x08,
310 AcceptMulticast = 0x04,
311 AcceptMyPhys = 0x02,
312 AcceptAllPhys = 0x01,
313
314 /* RxConfigBits */
315 RxCfgFIFOShift = 13,
316 RxCfgDMAShift = 8,
317
318 /* TxConfigBits */
319 TxInterFrameGapShift = 24,
320 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
321
322 /* Config1 register p.24 */
323 PMEnable = (1 << 0), /* Power Management Enable */
324
325 /* Config3 register p.25 */
326 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
327 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
328
329 /* Config5 register p.27 */
330 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
331 MWF = (1 << 5), /* Accept Multicast wakeup frame */
332 UWF = (1 << 4), /* Accept Unicast wakeup frame */
333 LanWake = (1 << 1), /* LanWake enable/disable */
334 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
335
336 /* TBICSR p.28 */
337 TBIReset = 0x80000000,
338 TBILoopback = 0x40000000,
339 TBINwEnable = 0x20000000,
340 TBINwRestart = 0x10000000,
341 TBILinkOk = 0x02000000,
342 TBINwComplete = 0x01000000,
343
344 /* CPlusCmd p.31 */
345 RxVlan = (1 << 6),
346 RxChkSum = (1 << 5),
347 PCIDAC = (1 << 4),
348 PCIMulRW = (1 << 3),
349
350 /* rtl8169_PHYstatus */
351 TBI_Enable = 0x80,
352 TxFlowCtrl = 0x40,
353 RxFlowCtrl = 0x20,
354 _1000bpsF = 0x10,
355 _100bps = 0x08,
356 _10bps = 0x04,
357 LinkStatus = 0x02,
358 FullDup = 0x01,
359
360 /* _MediaType */
361 _10_Half = 0x01,
362 _10_Full = 0x02,
363 _100_Half = 0x04,
364 _100_Full = 0x08,
365 _1000_Full = 0x10,
366
367 /* _TBICSRBit */
368 TBILinkOK = 0x02000000,
369
370 /* DumpCounterCommand */
371 CounterDump = 0x8,
372 };
373
374 enum _DescStatusBit {
375 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
376 RingEnd = (1 << 30), /* End of descriptor ring */
377 FirstFrag = (1 << 29), /* First segment of a packet */
378 LastFrag = (1 << 28), /* Final segment of a packet */
379
380 /* Tx private */
381 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
382 MSSShift = 16, /* MSS value position */
383 MSSMask = 0xfff, /* MSS value + LargeSend bit: 12 bits */
384 IPCS = (1 << 18), /* Calculate IP checksum */
385 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
386 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
387 TxVlanTag = (1 << 17), /* Add VLAN tag */
388
389 /* Rx private */
390 PID1 = (1 << 18), /* Protocol ID bit 1/2 */
391 PID0 = (1 << 17), /* Protocol ID bit 2/2 */
392
393 #define RxProtoUDP (PID1)
394 #define RxProtoTCP (PID0)
395 #define RxProtoIP (PID1 | PID0)
396 #define RxProtoMask RxProtoIP
397
398 IPFail = (1 << 16), /* IP checksum failed */
399 UDPFail = (1 << 15), /* UDP/IP checksum failed */
400 TCPFail = (1 << 14), /* TCP/IP checksum failed */
401 RxVlanTag = (1 << 16), /* VLAN tag available */
402 };
403
404 #define RsvdMask 0x3fffc000
405
406 struct TxDesc {
407 u32 opts1;
408 u32 opts2;
409 u64 addr;
410 };
411
412 struct RxDesc {
413 u32 opts1;
414 u32 opts2;
415 u64 addr;
416 };
417
418 struct ring_info {
419 struct sk_buff *skb;
420 u32 len;
421 u8 __pad[sizeof(void *) - sizeof(u32)];
422 };
423
424 struct rtl8169_private {
425 void __iomem *mmio_addr; /* memory map physical address */
426 struct pci_dev *pci_dev; /* Index of PCI device */
427 struct net_device_stats stats; /* statistics of net device */
428 spinlock_t lock; /* spin lock flag */
429 u32 msg_enable;
430 int chipset;
431 int mac_version;
432 int phy_version;
433 u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
434 u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
435 u32 dirty_rx;
436 u32 dirty_tx;
437 struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
438 struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
439 dma_addr_t TxPhyAddr;
440 dma_addr_t RxPhyAddr;
441 struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
442 struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
443 unsigned align;
444 unsigned rx_buf_sz;
445 struct timer_list timer;
446 u16 cp_cmd;
447 u16 intr_mask;
448 int phy_auto_nego_reg;
449 int phy_1000_ctrl_reg;
450 #ifdef CONFIG_R8169_VLAN
451 struct vlan_group *vlgrp;
452 #endif
453 int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
454 void (*get_settings)(struct net_device *, struct ethtool_cmd *);
455 void (*phy_reset_enable)(void __iomem *);
456 unsigned int (*phy_reset_pending)(void __iomem *);
457 unsigned int (*link_ok)(void __iomem *);
458 struct work_struct task;
459 unsigned wol_enabled : 1;
460 };
461
462 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
463 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
464 module_param_array(media, int, &num_media, 0);
465 MODULE_PARM_DESC(media, "force phy operation. Deprecated by ethtool (8).");
466 module_param(rx_copybreak, int, 0);
467 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
468 module_param(use_dac, int, 0);
469 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
470 module_param_named(debug, debug.msg_enable, int, 0);
471 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
472 MODULE_LICENSE("GPL");
473 MODULE_VERSION(RTL8169_VERSION);
474
475 static int rtl8169_open(struct net_device *dev);
476 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
477 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
478 static int rtl8169_init_ring(struct net_device *dev);
479 static void rtl8169_hw_start(struct net_device *dev);
480 static int rtl8169_close(struct net_device *dev);
481 static void rtl8169_set_rx_mode(struct net_device *dev);
482 static void rtl8169_tx_timeout(struct net_device *dev);
483 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
484 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
485 void __iomem *);
486 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
487 static void rtl8169_down(struct net_device *dev);
488
489 #ifdef CONFIG_R8169_NAPI
490 static int rtl8169_poll(struct net_device *dev, int *budget);
491 #endif
492
493 static const u16 rtl8169_intr_mask =
494 SYSErr | LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK;
495 static const u16 rtl8169_napi_event =
496 RxOK | RxOverflow | RxFIFOOver | TxOK | TxErr;
497 static const unsigned int rtl8169_rx_config =
498 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
499
500 static void mdio_write(void __iomem *ioaddr, int RegAddr, int value)
501 {
502 int i;
503
504 RTL_W32(PHYAR, 0x80000000 | (RegAddr & 0xFF) << 16 | value);
505
506 for (i = 20; i > 0; i--) {
507 /* Check if the RTL8169 has completed writing to the specified MII register */
508 if (!(RTL_R32(PHYAR) & 0x80000000))
509 break;
510 udelay(25);
511 }
512 }
513
514 static int mdio_read(void __iomem *ioaddr, int RegAddr)
515 {
516 int i, value = -1;
517
518 RTL_W32(PHYAR, 0x0 | (RegAddr & 0xFF) << 16);
519
520 for (i = 20; i > 0; i--) {
521 /* Check if the RTL8169 has completed retrieving data from the specified MII register */
522 if (RTL_R32(PHYAR) & 0x80000000) {
523 value = (int) (RTL_R32(PHYAR) & 0xFFFF);
524 break;
525 }
526 udelay(25);
527 }
528 return value;
529 }
530
531 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
532 {
533 RTL_W16(IntrMask, 0x0000);
534
535 RTL_W16(IntrStatus, 0xffff);
536 }
537
538 static void rtl8169_asic_down(void __iomem *ioaddr)
539 {
540 RTL_W8(ChipCmd, 0x00);
541 rtl8169_irq_mask_and_ack(ioaddr);
542 RTL_R16(CPlusCmd);
543 }
544
545 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
546 {
547 return RTL_R32(TBICSR) & TBIReset;
548 }
549
550 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
551 {
552 return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
553 }
554
555 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
556 {
557 return RTL_R32(TBICSR) & TBILinkOk;
558 }
559
560 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
561 {
562 return RTL_R8(PHYstatus) & LinkStatus;
563 }
564
565 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
566 {
567 RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
568 }
569
570 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
571 {
572 unsigned int val;
573
574 mdio_write(ioaddr, MII_BMCR, BMCR_RESET);
575 val = mdio_read(ioaddr, MII_BMCR);
576 }
577
578 static void rtl8169_check_link_status(struct net_device *dev,
579 struct rtl8169_private *tp, void __iomem *ioaddr)
580 {
581 unsigned long flags;
582
583 spin_lock_irqsave(&tp->lock, flags);
584 if (tp->link_ok(ioaddr)) {
585 netif_carrier_on(dev);
586 if (netif_msg_ifup(tp))
587 printk(KERN_INFO PFX "%s: link up\n", dev->name);
588 } else {
589 if (netif_msg_ifdown(tp))
590 printk(KERN_INFO PFX "%s: link down\n", dev->name);
591 netif_carrier_off(dev);
592 }
593 spin_unlock_irqrestore(&tp->lock, flags);
594 }
595
596 static void rtl8169_link_option(int idx, u8 *autoneg, u16 *speed, u8 *duplex)
597 {
598 struct {
599 u16 speed;
600 u8 duplex;
601 u8 autoneg;
602 u8 media;
603 } link_settings[] = {
604 { SPEED_10, DUPLEX_HALF, AUTONEG_DISABLE, _10_Half },
605 { SPEED_10, DUPLEX_FULL, AUTONEG_DISABLE, _10_Full },
606 { SPEED_100, DUPLEX_HALF, AUTONEG_DISABLE, _100_Half },
607 { SPEED_100, DUPLEX_FULL, AUTONEG_DISABLE, _100_Full },
608 { SPEED_1000, DUPLEX_FULL, AUTONEG_DISABLE, _1000_Full },
609 /* Make TBI happy */
610 { SPEED_1000, DUPLEX_FULL, AUTONEG_ENABLE, 0xff }
611 }, *p;
612 unsigned char option;
613
614 option = ((idx < MAX_UNITS) && (idx >= 0)) ? media[idx] : 0xff;
615
616 if ((option != 0xff) && !idx && netif_msg_drv(&debug))
617 printk(KERN_WARNING PFX "media option is deprecated.\n");
618
619 for (p = link_settings; p->media != 0xff; p++) {
620 if (p->media == option)
621 break;
622 }
623 *autoneg = p->autoneg;
624 *speed = p->speed;
625 *duplex = p->duplex;
626 }
627
628 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
629 {
630 struct rtl8169_private *tp = netdev_priv(dev);
631 void __iomem *ioaddr = tp->mmio_addr;
632 u8 options;
633
634 wol->wolopts = 0;
635
636 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
637 wol->supported = WAKE_ANY;
638
639 spin_lock_irq(&tp->lock);
640
641 options = RTL_R8(Config1);
642 if (!(options & PMEnable))
643 goto out_unlock;
644
645 options = RTL_R8(Config3);
646 if (options & LinkUp)
647 wol->wolopts |= WAKE_PHY;
648 if (options & MagicPacket)
649 wol->wolopts |= WAKE_MAGIC;
650
651 options = RTL_R8(Config5);
652 if (options & UWF)
653 wol->wolopts |= WAKE_UCAST;
654 if (options & BWF)
655 wol->wolopts |= WAKE_BCAST;
656 if (options & MWF)
657 wol->wolopts |= WAKE_MCAST;
658
659 out_unlock:
660 spin_unlock_irq(&tp->lock);
661 }
662
663 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
664 {
665 struct rtl8169_private *tp = netdev_priv(dev);
666 void __iomem *ioaddr = tp->mmio_addr;
667 int i;
668 static struct {
669 u32 opt;
670 u16 reg;
671 u8 mask;
672 } cfg[] = {
673 { WAKE_ANY, Config1, PMEnable },
674 { WAKE_PHY, Config3, LinkUp },
675 { WAKE_MAGIC, Config3, MagicPacket },
676 { WAKE_UCAST, Config5, UWF },
677 { WAKE_BCAST, Config5, BWF },
678 { WAKE_MCAST, Config5, MWF },
679 { WAKE_ANY, Config5, LanWake }
680 };
681
682 spin_lock_irq(&tp->lock);
683
684 RTL_W8(Cfg9346, Cfg9346_Unlock);
685
686 for (i = 0; i < ARRAY_SIZE(cfg); i++) {
687 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
688 if (wol->wolopts & cfg[i].opt)
689 options |= cfg[i].mask;
690 RTL_W8(cfg[i].reg, options);
691 }
692
693 RTL_W8(Cfg9346, Cfg9346_Lock);
694
695 tp->wol_enabled = (wol->wolopts) ? 1 : 0;
696
697 spin_unlock_irq(&tp->lock);
698
699 return 0;
700 }
701
702 static void rtl8169_get_drvinfo(struct net_device *dev,
703 struct ethtool_drvinfo *info)
704 {
705 struct rtl8169_private *tp = netdev_priv(dev);
706
707 strcpy(info->driver, MODULENAME);
708 strcpy(info->version, RTL8169_VERSION);
709 strcpy(info->bus_info, pci_name(tp->pci_dev));
710 }
711
712 static int rtl8169_get_regs_len(struct net_device *dev)
713 {
714 return R8169_REGS_SIZE;
715 }
716
717 static int rtl8169_set_speed_tbi(struct net_device *dev,
718 u8 autoneg, u16 speed, u8 duplex)
719 {
720 struct rtl8169_private *tp = netdev_priv(dev);
721 void __iomem *ioaddr = tp->mmio_addr;
722 int ret = 0;
723 u32 reg;
724
725 reg = RTL_R32(TBICSR);
726 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
727 (duplex == DUPLEX_FULL)) {
728 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
729 } else if (autoneg == AUTONEG_ENABLE)
730 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
731 else {
732 if (netif_msg_link(tp)) {
733 printk(KERN_WARNING "%s: "
734 "incorrect speed setting refused in TBI mode\n",
735 dev->name);
736 }
737 ret = -EOPNOTSUPP;
738 }
739
740 return ret;
741 }
742
743 static int rtl8169_set_speed_xmii(struct net_device *dev,
744 u8 autoneg, u16 speed, u8 duplex)
745 {
746 struct rtl8169_private *tp = netdev_priv(dev);
747 void __iomem *ioaddr = tp->mmio_addr;
748 int auto_nego, giga_ctrl;
749
750 auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
751 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
752 ADVERTISE_100HALF | ADVERTISE_100FULL);
753 giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
754 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
755
756 if (autoneg == AUTONEG_ENABLE) {
757 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
758 ADVERTISE_100HALF | ADVERTISE_100FULL);
759 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
760 } else {
761 if (speed == SPEED_10)
762 auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
763 else if (speed == SPEED_100)
764 auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
765 else if (speed == SPEED_1000)
766 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
767
768 if (duplex == DUPLEX_HALF)
769 auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
770
771 if (duplex == DUPLEX_FULL)
772 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
773
774 /* This tweak comes straight from Realtek's driver. */
775 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
776 (tp->mac_version == RTL_GIGA_MAC_VER_13)) {
777 auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
778 }
779 }
780
781 /* The 8100e/8101e do Fast Ethernet only. */
782 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
783 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
784 (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
785 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
786 netif_msg_link(tp)) {
787 printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
788 dev->name);
789 }
790 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
791 }
792
793 auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
794
795 tp->phy_auto_nego_reg = auto_nego;
796 tp->phy_1000_ctrl_reg = giga_ctrl;
797
798 mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
799 mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
800 mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
801 return 0;
802 }
803
804 static int rtl8169_set_speed(struct net_device *dev,
805 u8 autoneg, u16 speed, u8 duplex)
806 {
807 struct rtl8169_private *tp = netdev_priv(dev);
808 int ret;
809
810 ret = tp->set_speed(dev, autoneg, speed, duplex);
811
812 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
813 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
814
815 return ret;
816 }
817
818 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
819 {
820 struct rtl8169_private *tp = netdev_priv(dev);
821 unsigned long flags;
822 int ret;
823
824 spin_lock_irqsave(&tp->lock, flags);
825 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
826 spin_unlock_irqrestore(&tp->lock, flags);
827
828 return ret;
829 }
830
831 static u32 rtl8169_get_rx_csum(struct net_device *dev)
832 {
833 struct rtl8169_private *tp = netdev_priv(dev);
834
835 return tp->cp_cmd & RxChkSum;
836 }
837
838 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
839 {
840 struct rtl8169_private *tp = netdev_priv(dev);
841 void __iomem *ioaddr = tp->mmio_addr;
842 unsigned long flags;
843
844 spin_lock_irqsave(&tp->lock, flags);
845
846 if (data)
847 tp->cp_cmd |= RxChkSum;
848 else
849 tp->cp_cmd &= ~RxChkSum;
850
851 RTL_W16(CPlusCmd, tp->cp_cmd);
852 RTL_R16(CPlusCmd);
853
854 spin_unlock_irqrestore(&tp->lock, flags);
855
856 return 0;
857 }
858
859 #ifdef CONFIG_R8169_VLAN
860
861 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
862 struct sk_buff *skb)
863 {
864 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
865 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
866 }
867
868 static void rtl8169_vlan_rx_register(struct net_device *dev,
869 struct vlan_group *grp)
870 {
871 struct rtl8169_private *tp = netdev_priv(dev);
872 void __iomem *ioaddr = tp->mmio_addr;
873 unsigned long flags;
874
875 spin_lock_irqsave(&tp->lock, flags);
876 tp->vlgrp = grp;
877 if (tp->vlgrp)
878 tp->cp_cmd |= RxVlan;
879 else
880 tp->cp_cmd &= ~RxVlan;
881 RTL_W16(CPlusCmd, tp->cp_cmd);
882 RTL_R16(CPlusCmd);
883 spin_unlock_irqrestore(&tp->lock, flags);
884 }
885
886 static void rtl8169_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
887 {
888 struct rtl8169_private *tp = netdev_priv(dev);
889 unsigned long flags;
890
891 spin_lock_irqsave(&tp->lock, flags);
892 if (tp->vlgrp)
893 tp->vlgrp->vlan_devices[vid] = NULL;
894 spin_unlock_irqrestore(&tp->lock, flags);
895 }
896
897 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
898 struct sk_buff *skb)
899 {
900 u32 opts2 = le32_to_cpu(desc->opts2);
901 int ret;
902
903 if (tp->vlgrp && (opts2 & RxVlanTag)) {
904 rtl8169_rx_hwaccel_skb(skb, tp->vlgrp,
905 swab16(opts2 & 0xffff));
906 ret = 0;
907 } else
908 ret = -1;
909 desc->opts2 = 0;
910 return ret;
911 }
912
913 #else /* !CONFIG_R8169_VLAN */
914
915 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
916 struct sk_buff *skb)
917 {
918 return 0;
919 }
920
921 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
922 struct sk_buff *skb)
923 {
924 return -1;
925 }
926
927 #endif
928
929 static void rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
930 {
931 struct rtl8169_private *tp = netdev_priv(dev);
932 void __iomem *ioaddr = tp->mmio_addr;
933 u32 status;
934
935 cmd->supported =
936 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
937 cmd->port = PORT_FIBRE;
938 cmd->transceiver = XCVR_INTERNAL;
939
940 status = RTL_R32(TBICSR);
941 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
942 cmd->autoneg = !!(status & TBINwEnable);
943
944 cmd->speed = SPEED_1000;
945 cmd->duplex = DUPLEX_FULL; /* Always set */
946 }
947
948 static void rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
949 {
950 struct rtl8169_private *tp = netdev_priv(dev);
951 void __iomem *ioaddr = tp->mmio_addr;
952 u8 status;
953
954 cmd->supported = SUPPORTED_10baseT_Half |
955 SUPPORTED_10baseT_Full |
956 SUPPORTED_100baseT_Half |
957 SUPPORTED_100baseT_Full |
958 SUPPORTED_1000baseT_Full |
959 SUPPORTED_Autoneg |
960 SUPPORTED_TP;
961
962 cmd->autoneg = 1;
963 cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
964
965 if (tp->phy_auto_nego_reg & ADVERTISE_10HALF)
966 cmd->advertising |= ADVERTISED_10baseT_Half;
967 if (tp->phy_auto_nego_reg & ADVERTISE_10FULL)
968 cmd->advertising |= ADVERTISED_10baseT_Full;
969 if (tp->phy_auto_nego_reg & ADVERTISE_100HALF)
970 cmd->advertising |= ADVERTISED_100baseT_Half;
971 if (tp->phy_auto_nego_reg & ADVERTISE_100FULL)
972 cmd->advertising |= ADVERTISED_100baseT_Full;
973 if (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL)
974 cmd->advertising |= ADVERTISED_1000baseT_Full;
975
976 status = RTL_R8(PHYstatus);
977
978 if (status & _1000bpsF)
979 cmd->speed = SPEED_1000;
980 else if (status & _100bps)
981 cmd->speed = SPEED_100;
982 else if (status & _10bps)
983 cmd->speed = SPEED_10;
984
985 if (status & TxFlowCtrl)
986 cmd->advertising |= ADVERTISED_Asym_Pause;
987 if (status & RxFlowCtrl)
988 cmd->advertising |= ADVERTISED_Pause;
989
990 cmd->duplex = ((status & _1000bpsF) || (status & FullDup)) ?
991 DUPLEX_FULL : DUPLEX_HALF;
992 }
993
994 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
995 {
996 struct rtl8169_private *tp = netdev_priv(dev);
997 unsigned long flags;
998
999 spin_lock_irqsave(&tp->lock, flags);
1000
1001 tp->get_settings(dev, cmd);
1002
1003 spin_unlock_irqrestore(&tp->lock, flags);
1004 return 0;
1005 }
1006
1007 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1008 void *p)
1009 {
1010 struct rtl8169_private *tp = netdev_priv(dev);
1011 unsigned long flags;
1012
1013 if (regs->len > R8169_REGS_SIZE)
1014 regs->len = R8169_REGS_SIZE;
1015
1016 spin_lock_irqsave(&tp->lock, flags);
1017 memcpy_fromio(p, tp->mmio_addr, regs->len);
1018 spin_unlock_irqrestore(&tp->lock, flags);
1019 }
1020
1021 static u32 rtl8169_get_msglevel(struct net_device *dev)
1022 {
1023 struct rtl8169_private *tp = netdev_priv(dev);
1024
1025 return tp->msg_enable;
1026 }
1027
1028 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1029 {
1030 struct rtl8169_private *tp = netdev_priv(dev);
1031
1032 tp->msg_enable = value;
1033 }
1034
1035 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1036 "tx_packets",
1037 "rx_packets",
1038 "tx_errors",
1039 "rx_errors",
1040 "rx_missed",
1041 "align_errors",
1042 "tx_single_collisions",
1043 "tx_multi_collisions",
1044 "unicast",
1045 "broadcast",
1046 "multicast",
1047 "tx_aborted",
1048 "tx_underrun",
1049 };
1050
1051 struct rtl8169_counters {
1052 u64 tx_packets;
1053 u64 rx_packets;
1054 u64 tx_errors;
1055 u32 rx_errors;
1056 u16 rx_missed;
1057 u16 align_errors;
1058 u32 tx_one_collision;
1059 u32 tx_multi_collision;
1060 u64 rx_unicast;
1061 u64 rx_broadcast;
1062 u32 rx_multicast;
1063 u16 tx_aborted;
1064 u16 tx_underun;
1065 };
1066
1067 static int rtl8169_get_stats_count(struct net_device *dev)
1068 {
1069 return ARRAY_SIZE(rtl8169_gstrings);
1070 }
1071
1072 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1073 struct ethtool_stats *stats, u64 *data)
1074 {
1075 struct rtl8169_private *tp = netdev_priv(dev);
1076 void __iomem *ioaddr = tp->mmio_addr;
1077 struct rtl8169_counters *counters;
1078 dma_addr_t paddr;
1079 u32 cmd;
1080
1081 ASSERT_RTNL();
1082
1083 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1084 if (!counters)
1085 return;
1086
1087 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1088 cmd = (u64)paddr & DMA_32BIT_MASK;
1089 RTL_W32(CounterAddrLow, cmd);
1090 RTL_W32(CounterAddrLow, cmd | CounterDump);
1091
1092 while (RTL_R32(CounterAddrLow) & CounterDump) {
1093 if (msleep_interruptible(1))
1094 break;
1095 }
1096
1097 RTL_W32(CounterAddrLow, 0);
1098 RTL_W32(CounterAddrHigh, 0);
1099
1100 data[0] = le64_to_cpu(counters->tx_packets);
1101 data[1] = le64_to_cpu(counters->rx_packets);
1102 data[2] = le64_to_cpu(counters->tx_errors);
1103 data[3] = le32_to_cpu(counters->rx_errors);
1104 data[4] = le16_to_cpu(counters->rx_missed);
1105 data[5] = le16_to_cpu(counters->align_errors);
1106 data[6] = le32_to_cpu(counters->tx_one_collision);
1107 data[7] = le32_to_cpu(counters->tx_multi_collision);
1108 data[8] = le64_to_cpu(counters->rx_unicast);
1109 data[9] = le64_to_cpu(counters->rx_broadcast);
1110 data[10] = le32_to_cpu(counters->rx_multicast);
1111 data[11] = le16_to_cpu(counters->tx_aborted);
1112 data[12] = le16_to_cpu(counters->tx_underun);
1113
1114 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1115 }
1116
1117 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1118 {
1119 switch(stringset) {
1120 case ETH_SS_STATS:
1121 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1122 break;
1123 }
1124 }
1125
1126
1127 static const struct ethtool_ops rtl8169_ethtool_ops = {
1128 .get_drvinfo = rtl8169_get_drvinfo,
1129 .get_regs_len = rtl8169_get_regs_len,
1130 .get_link = ethtool_op_get_link,
1131 .get_settings = rtl8169_get_settings,
1132 .set_settings = rtl8169_set_settings,
1133 .get_msglevel = rtl8169_get_msglevel,
1134 .set_msglevel = rtl8169_set_msglevel,
1135 .get_rx_csum = rtl8169_get_rx_csum,
1136 .set_rx_csum = rtl8169_set_rx_csum,
1137 .get_tx_csum = ethtool_op_get_tx_csum,
1138 .set_tx_csum = ethtool_op_set_tx_csum,
1139 .get_sg = ethtool_op_get_sg,
1140 .set_sg = ethtool_op_set_sg,
1141 .get_tso = ethtool_op_get_tso,
1142 .set_tso = ethtool_op_set_tso,
1143 .get_regs = rtl8169_get_regs,
1144 .get_wol = rtl8169_get_wol,
1145 .set_wol = rtl8169_set_wol,
1146 .get_strings = rtl8169_get_strings,
1147 .get_stats_count = rtl8169_get_stats_count,
1148 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1149 .get_perm_addr = ethtool_op_get_perm_addr,
1150 };
1151
1152 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg, int bitnum,
1153 int bitval)
1154 {
1155 int val;
1156
1157 val = mdio_read(ioaddr, reg);
1158 val = (bitval == 1) ?
1159 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1160 mdio_write(ioaddr, reg, val & 0xffff);
1161 }
1162
1163 static void rtl8169_get_mac_version(struct rtl8169_private *tp, void __iomem *ioaddr)
1164 {
1165 const struct {
1166 u32 mask;
1167 int mac_version;
1168 } mac_info[] = {
1169 { 0x38800000, RTL_GIGA_MAC_VER_15 },
1170 { 0x38000000, RTL_GIGA_MAC_VER_12 },
1171 { 0x34000000, RTL_GIGA_MAC_VER_13 },
1172 { 0x30800000, RTL_GIGA_MAC_VER_14 },
1173 { 0x30000000, RTL_GIGA_MAC_VER_11 },
1174 { 0x18000000, RTL_GIGA_MAC_VER_05 },
1175 { 0x10000000, RTL_GIGA_MAC_VER_04 },
1176 { 0x04000000, RTL_GIGA_MAC_VER_03 },
1177 { 0x00800000, RTL_GIGA_MAC_VER_02 },
1178 { 0x00000000, RTL_GIGA_MAC_VER_01 } /* Catch-all */
1179 }, *p = mac_info;
1180 u32 reg;
1181
1182 reg = RTL_R32(TxConfig) & 0x7c800000;
1183 while ((reg & p->mask) != p->mask)
1184 p++;
1185 tp->mac_version = p->mac_version;
1186 }
1187
1188 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1189 {
1190 dprintk("mac_version = 0x%02x\n", tp->mac_version);
1191 }
1192
1193 static void rtl8169_get_phy_version(struct rtl8169_private *tp, void __iomem *ioaddr)
1194 {
1195 const struct {
1196 u16 mask;
1197 u16 set;
1198 int phy_version;
1199 } phy_info[] = {
1200 { 0x000f, 0x0002, RTL_GIGA_PHY_VER_G },
1201 { 0x000f, 0x0001, RTL_GIGA_PHY_VER_F },
1202 { 0x000f, 0x0000, RTL_GIGA_PHY_VER_E },
1203 { 0x0000, 0x0000, RTL_GIGA_PHY_VER_D } /* Catch-all */
1204 }, *p = phy_info;
1205 u16 reg;
1206
1207 reg = mdio_read(ioaddr, MII_PHYSID2) & 0xffff;
1208 while ((reg & p->mask) != p->set)
1209 p++;
1210 tp->phy_version = p->phy_version;
1211 }
1212
1213 static void rtl8169_print_phy_version(struct rtl8169_private *tp)
1214 {
1215 struct {
1216 int version;
1217 char *msg;
1218 u32 reg;
1219 } phy_print[] = {
1220 { RTL_GIGA_PHY_VER_G, "RTL_GIGA_PHY_VER_G", 0x0002 },
1221 { RTL_GIGA_PHY_VER_F, "RTL_GIGA_PHY_VER_F", 0x0001 },
1222 { RTL_GIGA_PHY_VER_E, "RTL_GIGA_PHY_VER_E", 0x0000 },
1223 { RTL_GIGA_PHY_VER_D, "RTL_GIGA_PHY_VER_D", 0x0000 },
1224 { 0, NULL, 0x0000 }
1225 }, *p;
1226
1227 for (p = phy_print; p->msg; p++) {
1228 if (tp->phy_version == p->version) {
1229 dprintk("phy_version == %s (%04x)\n", p->msg, p->reg);
1230 return;
1231 }
1232 }
1233 dprintk("phy_version == Unknown\n");
1234 }
1235
1236 static void rtl8169_hw_phy_config(struct net_device *dev)
1237 {
1238 struct rtl8169_private *tp = netdev_priv(dev);
1239 void __iomem *ioaddr = tp->mmio_addr;
1240 struct {
1241 u16 regs[5]; /* Beware of bit-sign propagation */
1242 } phy_magic[5] = { {
1243 { 0x0000, //w 4 15 12 0
1244 0x00a1, //w 3 15 0 00a1
1245 0x0008, //w 2 15 0 0008
1246 0x1020, //w 1 15 0 1020
1247 0x1000 } },{ //w 0 15 0 1000
1248 { 0x7000, //w 4 15 12 7
1249 0xff41, //w 3 15 0 ff41
1250 0xde60, //w 2 15 0 de60
1251 0x0140, //w 1 15 0 0140
1252 0x0077 } },{ //w 0 15 0 0077
1253 { 0xa000, //w 4 15 12 a
1254 0xdf01, //w 3 15 0 df01
1255 0xdf20, //w 2 15 0 df20
1256 0xff95, //w 1 15 0 ff95
1257 0xfa00 } },{ //w 0 15 0 fa00
1258 { 0xb000, //w 4 15 12 b
1259 0xff41, //w 3 15 0 ff41
1260 0xde20, //w 2 15 0 de20
1261 0x0140, //w 1 15 0 0140
1262 0x00bb } },{ //w 0 15 0 00bb
1263 { 0xf000, //w 4 15 12 f
1264 0xdf01, //w 3 15 0 df01
1265 0xdf20, //w 2 15 0 df20
1266 0xff95, //w 1 15 0 ff95
1267 0xbf00 } //w 0 15 0 bf00
1268 }
1269 }, *p = phy_magic;
1270 int i;
1271
1272 rtl8169_print_mac_version(tp);
1273 rtl8169_print_phy_version(tp);
1274
1275 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1276 return;
1277 if (tp->phy_version >= RTL_GIGA_PHY_VER_H)
1278 return;
1279
1280 dprintk("MAC version != 0 && PHY version == 0 or 1\n");
1281 dprintk("Do final_reg2.cfg\n");
1282
1283 /* Shazam ! */
1284
1285 if (tp->mac_version == RTL_GIGA_MAC_VER_04) {
1286 mdio_write(ioaddr, 31, 0x0001);
1287 mdio_write(ioaddr, 9, 0x273a);
1288 mdio_write(ioaddr, 14, 0x7bfb);
1289 mdio_write(ioaddr, 27, 0x841e);
1290
1291 mdio_write(ioaddr, 31, 0x0002);
1292 mdio_write(ioaddr, 1, 0x90d0);
1293 mdio_write(ioaddr, 31, 0x0000);
1294 return;
1295 }
1296
1297 /* phy config for RTL8169s mac_version C chip */
1298 mdio_write(ioaddr, 31, 0x0001); //w 31 2 0 1
1299 mdio_write(ioaddr, 21, 0x1000); //w 21 15 0 1000
1300 mdio_write(ioaddr, 24, 0x65c7); //w 24 15 0 65c7
1301 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1302
1303 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1304 int val, pos = 4;
1305
1306 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1307 mdio_write(ioaddr, pos, val);
1308 while (--pos >= 0)
1309 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1310 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1311 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1312 }
1313 mdio_write(ioaddr, 31, 0x0000); //w 31 2 0 0
1314 }
1315
1316 static void rtl8169_phy_timer(unsigned long __opaque)
1317 {
1318 struct net_device *dev = (struct net_device *)__opaque;
1319 struct rtl8169_private *tp = netdev_priv(dev);
1320 struct timer_list *timer = &tp->timer;
1321 void __iomem *ioaddr = tp->mmio_addr;
1322 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1323
1324 assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1325 assert(tp->phy_version < RTL_GIGA_PHY_VER_H);
1326
1327 if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1328 return;
1329
1330 spin_lock_irq(&tp->lock);
1331
1332 if (tp->phy_reset_pending(ioaddr)) {
1333 /*
1334 * A busy loop could burn quite a few cycles on nowadays CPU.
1335 * Let's delay the execution of the timer for a few ticks.
1336 */
1337 timeout = HZ/10;
1338 goto out_mod_timer;
1339 }
1340
1341 if (tp->link_ok(ioaddr))
1342 goto out_unlock;
1343
1344 if (netif_msg_link(tp))
1345 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1346
1347 tp->phy_reset_enable(ioaddr);
1348
1349 out_mod_timer:
1350 mod_timer(timer, jiffies + timeout);
1351 out_unlock:
1352 spin_unlock_irq(&tp->lock);
1353 }
1354
1355 static inline void rtl8169_delete_timer(struct net_device *dev)
1356 {
1357 struct rtl8169_private *tp = netdev_priv(dev);
1358 struct timer_list *timer = &tp->timer;
1359
1360 if ((tp->mac_version <= RTL_GIGA_MAC_VER_01) ||
1361 (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1362 return;
1363
1364 del_timer_sync(timer);
1365 }
1366
1367 static inline void rtl8169_request_timer(struct net_device *dev)
1368 {
1369 struct rtl8169_private *tp = netdev_priv(dev);
1370 struct timer_list *timer = &tp->timer;
1371
1372 if ((tp->mac_version <= RTL_GIGA_MAC_VER_01) ||
1373 (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1374 return;
1375
1376 init_timer(timer);
1377 timer->expires = jiffies + RTL8169_PHY_TIMEOUT;
1378 timer->data = (unsigned long)(dev);
1379 timer->function = rtl8169_phy_timer;
1380 add_timer(timer);
1381 }
1382
1383 #ifdef CONFIG_NET_POLL_CONTROLLER
1384 /*
1385 * Polling 'interrupt' - used by things like netconsole to send skbs
1386 * without having to re-enable interrupts. It's not called while
1387 * the interrupt routine is executing.
1388 */
1389 static void rtl8169_netpoll(struct net_device *dev)
1390 {
1391 struct rtl8169_private *tp = netdev_priv(dev);
1392 struct pci_dev *pdev = tp->pci_dev;
1393
1394 disable_irq(pdev->irq);
1395 rtl8169_interrupt(pdev->irq, dev);
1396 enable_irq(pdev->irq);
1397 }
1398 #endif
1399
1400 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1401 void __iomem *ioaddr)
1402 {
1403 iounmap(ioaddr);
1404 pci_release_regions(pdev);
1405 pci_disable_device(pdev);
1406 free_netdev(dev);
1407 }
1408
1409 static void rtl8169_phy_reset(struct net_device *dev,
1410 struct rtl8169_private *tp)
1411 {
1412 void __iomem *ioaddr = tp->mmio_addr;
1413 int i;
1414
1415 tp->phy_reset_enable(ioaddr);
1416 for (i = 0; i < 100; i++) {
1417 if (!tp->phy_reset_pending(ioaddr))
1418 return;
1419 msleep(1);
1420 }
1421 if (netif_msg_link(tp))
1422 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1423 }
1424
1425 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1426 {
1427 void __iomem *ioaddr = tp->mmio_addr;
1428 static int board_idx = -1;
1429 u8 autoneg, duplex;
1430 u16 speed;
1431
1432 board_idx++;
1433
1434 rtl8169_hw_phy_config(dev);
1435
1436 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1437 RTL_W8(0x82, 0x01);
1438
1439 if (tp->mac_version < RTL_GIGA_MAC_VER_03) {
1440 dprintk("Set PCI Latency=0x40\n");
1441 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1442 }
1443
1444 if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1445 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1446 RTL_W8(0x82, 0x01);
1447 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1448 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1449 }
1450
1451 rtl8169_link_option(board_idx, &autoneg, &speed, &duplex);
1452
1453 rtl8169_phy_reset(dev, tp);
1454
1455 rtl8169_set_speed(dev, autoneg, speed, duplex);
1456
1457 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1458 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1459 }
1460
1461 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1462 {
1463 struct rtl8169_private *tp = netdev_priv(dev);
1464 struct mii_ioctl_data *data = if_mii(ifr);
1465
1466 if (!netif_running(dev))
1467 return -ENODEV;
1468
1469 switch (cmd) {
1470 case SIOCGMIIPHY:
1471 data->phy_id = 32; /* Internal PHY */
1472 return 0;
1473
1474 case SIOCGMIIREG:
1475 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1476 return 0;
1477
1478 case SIOCSMIIREG:
1479 if (!capable(CAP_NET_ADMIN))
1480 return -EPERM;
1481 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1482 return 0;
1483 }
1484 return -EOPNOTSUPP;
1485 }
1486
1487 static int __devinit
1488 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1489 {
1490 const unsigned int region = rtl_cfg_info[ent->driver_data].region;
1491 struct rtl8169_private *tp;
1492 struct net_device *dev;
1493 void __iomem *ioaddr;
1494 unsigned int pm_cap;
1495 int i, rc;
1496
1497 if (netif_msg_drv(&debug)) {
1498 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1499 MODULENAME, RTL8169_VERSION);
1500 }
1501
1502 dev = alloc_etherdev(sizeof (*tp));
1503 if (!dev) {
1504 if (netif_msg_drv(&debug))
1505 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1506 rc = -ENOMEM;
1507 goto out;
1508 }
1509
1510 SET_MODULE_OWNER(dev);
1511 SET_NETDEV_DEV(dev, &pdev->dev);
1512 tp = netdev_priv(dev);
1513 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1514
1515 /* enable device (incl. PCI PM wakeup and hotplug setup) */
1516 rc = pci_enable_device(pdev);
1517 if (rc < 0) {
1518 if (netif_msg_probe(tp))
1519 dev_err(&pdev->dev, "enable failure\n");
1520 goto err_out_free_dev_1;
1521 }
1522
1523 rc = pci_set_mwi(pdev);
1524 if (rc < 0)
1525 goto err_out_disable_2;
1526
1527 /* save power state before pci_enable_device overwrites it */
1528 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
1529 if (pm_cap) {
1530 u16 pwr_command, acpi_idle_state;
1531
1532 pci_read_config_word(pdev, pm_cap + PCI_PM_CTRL, &pwr_command);
1533 acpi_idle_state = pwr_command & PCI_PM_CTRL_STATE_MASK;
1534 } else {
1535 if (netif_msg_probe(tp)) {
1536 dev_err(&pdev->dev,
1537 "PowerManagement capability not found.\n");
1538 }
1539 }
1540
1541 /* make sure PCI base addr 1 is MMIO */
1542 if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1543 if (netif_msg_probe(tp)) {
1544 dev_err(&pdev->dev,
1545 "region #%d not an MMIO resource, aborting\n",
1546 region);
1547 }
1548 rc = -ENODEV;
1549 goto err_out_mwi_3;
1550 }
1551
1552 /* check for weird/broken PCI region reporting */
1553 if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1554 if (netif_msg_probe(tp)) {
1555 dev_err(&pdev->dev,
1556 "Invalid PCI region size(s), aborting\n");
1557 }
1558 rc = -ENODEV;
1559 goto err_out_mwi_3;
1560 }
1561
1562 rc = pci_request_regions(pdev, MODULENAME);
1563 if (rc < 0) {
1564 if (netif_msg_probe(tp))
1565 dev_err(&pdev->dev, "could not request regions.\n");
1566 goto err_out_mwi_3;
1567 }
1568
1569 tp->cp_cmd = PCIMulRW | RxChkSum;
1570
1571 if ((sizeof(dma_addr_t) > 4) &&
1572 !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1573 tp->cp_cmd |= PCIDAC;
1574 dev->features |= NETIF_F_HIGHDMA;
1575 } else {
1576 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1577 if (rc < 0) {
1578 if (netif_msg_probe(tp)) {
1579 dev_err(&pdev->dev,
1580 "DMA configuration failed.\n");
1581 }
1582 goto err_out_free_res_4;
1583 }
1584 }
1585
1586 pci_set_master(pdev);
1587
1588 /* ioremap MMIO region */
1589 ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1590 if (!ioaddr) {
1591 if (netif_msg_probe(tp))
1592 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1593 rc = -EIO;
1594 goto err_out_free_res_4;
1595 }
1596
1597 /* Unneeded ? Don't mess with Mrs. Murphy. */
1598 rtl8169_irq_mask_and_ack(ioaddr);
1599
1600 /* Soft reset the chip. */
1601 RTL_W8(ChipCmd, CmdReset);
1602
1603 /* Check that the chip has finished the reset. */
1604 for (i = 100; i > 0; i--) {
1605 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1606 break;
1607 msleep_interruptible(1);
1608 }
1609
1610 /* Identify chip attached to board */
1611 rtl8169_get_mac_version(tp, ioaddr);
1612 rtl8169_get_phy_version(tp, ioaddr);
1613
1614 rtl8169_print_mac_version(tp);
1615 rtl8169_print_phy_version(tp);
1616
1617 for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--) {
1618 if (tp->mac_version == rtl_chip_info[i].mac_version)
1619 break;
1620 }
1621 if (i < 0) {
1622 /* Unknown chip: assume array element #0, original RTL-8169 */
1623 if (netif_msg_probe(tp)) {
1624 dev_printk(KERN_DEBUG, &pdev->dev,
1625 "unknown chip version, assuming %s\n",
1626 rtl_chip_info[0].name);
1627 }
1628 i++;
1629 }
1630 tp->chipset = i;
1631
1632 RTL_W8(Cfg9346, Cfg9346_Unlock);
1633 RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1634 RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1635 RTL_W8(Cfg9346, Cfg9346_Lock);
1636
1637 if (RTL_R8(PHYstatus) & TBI_Enable) {
1638 tp->set_speed = rtl8169_set_speed_tbi;
1639 tp->get_settings = rtl8169_gset_tbi;
1640 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1641 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1642 tp->link_ok = rtl8169_tbi_link_ok;
1643
1644 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1645 } else {
1646 tp->set_speed = rtl8169_set_speed_xmii;
1647 tp->get_settings = rtl8169_gset_xmii;
1648 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1649 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1650 tp->link_ok = rtl8169_xmii_link_ok;
1651
1652 dev->do_ioctl = rtl8169_ioctl;
1653 }
1654
1655 /* Get MAC address. FIXME: read EEPROM */
1656 for (i = 0; i < MAC_ADDR_LEN; i++)
1657 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1658 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1659
1660 dev->open = rtl8169_open;
1661 dev->hard_start_xmit = rtl8169_start_xmit;
1662 dev->get_stats = rtl8169_get_stats;
1663 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1664 dev->stop = rtl8169_close;
1665 dev->tx_timeout = rtl8169_tx_timeout;
1666 dev->set_multicast_list = rtl8169_set_rx_mode;
1667 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1668 dev->irq = pdev->irq;
1669 dev->base_addr = (unsigned long) ioaddr;
1670 dev->change_mtu = rtl8169_change_mtu;
1671
1672 #ifdef CONFIG_R8169_NAPI
1673 dev->poll = rtl8169_poll;
1674 dev->weight = R8169_NAPI_WEIGHT;
1675 #endif
1676
1677 #ifdef CONFIG_R8169_VLAN
1678 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1679 dev->vlan_rx_register = rtl8169_vlan_rx_register;
1680 dev->vlan_rx_kill_vid = rtl8169_vlan_rx_kill_vid;
1681 #endif
1682
1683 #ifdef CONFIG_NET_POLL_CONTROLLER
1684 dev->poll_controller = rtl8169_netpoll;
1685 #endif
1686
1687 tp->intr_mask = 0xffff;
1688 tp->pci_dev = pdev;
1689 tp->mmio_addr = ioaddr;
1690 tp->align = rtl_cfg_info[ent->driver_data].align;
1691
1692 spin_lock_init(&tp->lock);
1693
1694 rc = register_netdev(dev);
1695 if (rc < 0)
1696 goto err_out_unmap_5;
1697
1698 pci_set_drvdata(pdev, dev);
1699
1700 if (netif_msg_probe(tp)) {
1701 printk(KERN_INFO "%s: %s at 0x%lx, "
1702 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1703 "IRQ %d\n",
1704 dev->name,
1705 rtl_chip_info[tp->chipset].name,
1706 dev->base_addr,
1707 dev->dev_addr[0], dev->dev_addr[1],
1708 dev->dev_addr[2], dev->dev_addr[3],
1709 dev->dev_addr[4], dev->dev_addr[5], dev->irq);
1710 }
1711
1712 rtl8169_init_phy(dev, tp);
1713
1714 out:
1715 return rc;
1716
1717 err_out_unmap_5:
1718 iounmap(ioaddr);
1719 err_out_free_res_4:
1720 pci_release_regions(pdev);
1721 err_out_mwi_3:
1722 pci_clear_mwi(pdev);
1723 err_out_disable_2:
1724 pci_disable_device(pdev);
1725 err_out_free_dev_1:
1726 free_netdev(dev);
1727 goto out;
1728 }
1729
1730 static void __devexit
1731 rtl8169_remove_one(struct pci_dev *pdev)
1732 {
1733 struct net_device *dev = pci_get_drvdata(pdev);
1734 struct rtl8169_private *tp = netdev_priv(dev);
1735
1736 assert(dev != NULL);
1737 assert(tp != NULL);
1738
1739 unregister_netdev(dev);
1740 rtl8169_release_board(pdev, dev, tp->mmio_addr);
1741 pci_set_drvdata(pdev, NULL);
1742 }
1743
1744 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
1745 struct net_device *dev)
1746 {
1747 unsigned int mtu = dev->mtu;
1748
1749 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1750 }
1751
1752 static int rtl8169_open(struct net_device *dev)
1753 {
1754 struct rtl8169_private *tp = netdev_priv(dev);
1755 struct pci_dev *pdev = tp->pci_dev;
1756 int retval;
1757
1758 rtl8169_set_rxbufsize(tp, dev);
1759
1760 retval =
1761 request_irq(dev->irq, rtl8169_interrupt, IRQF_SHARED, dev->name, dev);
1762 if (retval < 0)
1763 goto out;
1764
1765 retval = -ENOMEM;
1766
1767 /*
1768 * Rx and Tx desscriptors needs 256 bytes alignment.
1769 * pci_alloc_consistent provides more.
1770 */
1771 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
1772 &tp->TxPhyAddr);
1773 if (!tp->TxDescArray)
1774 goto err_free_irq;
1775
1776 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
1777 &tp->RxPhyAddr);
1778 if (!tp->RxDescArray)
1779 goto err_free_tx;
1780
1781 retval = rtl8169_init_ring(dev);
1782 if (retval < 0)
1783 goto err_free_rx;
1784
1785 INIT_WORK(&tp->task, NULL, dev);
1786
1787 rtl8169_hw_start(dev);
1788
1789 rtl8169_request_timer(dev);
1790
1791 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
1792 out:
1793 return retval;
1794
1795 err_free_rx:
1796 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
1797 tp->RxPhyAddr);
1798 err_free_tx:
1799 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
1800 tp->TxPhyAddr);
1801 err_free_irq:
1802 free_irq(dev->irq, dev);
1803 goto out;
1804 }
1805
1806 static void rtl8169_hw_reset(void __iomem *ioaddr)
1807 {
1808 /* Disable interrupts */
1809 rtl8169_irq_mask_and_ack(ioaddr);
1810
1811 /* Reset the chipset */
1812 RTL_W8(ChipCmd, CmdReset);
1813
1814 /* PCI commit */
1815 RTL_R8(ChipCmd);
1816 }
1817
1818 static void
1819 rtl8169_hw_start(struct net_device *dev)
1820 {
1821 struct rtl8169_private *tp = netdev_priv(dev);
1822 void __iomem *ioaddr = tp->mmio_addr;
1823 struct pci_dev *pdev = tp->pci_dev;
1824 u32 i;
1825
1826 /* Soft reset the chip. */
1827 RTL_W8(ChipCmd, CmdReset);
1828
1829 /* Check that the chip has finished the reset. */
1830 for (i = 100; i > 0; i--) {
1831 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1832 break;
1833 msleep_interruptible(1);
1834 }
1835
1836 if (tp->mac_version == RTL_GIGA_MAC_VER_13) {
1837 pci_write_config_word(pdev, 0x68, 0x00);
1838 pci_write_config_word(pdev, 0x69, 0x08);
1839 }
1840
1841 /* Undocumented stuff. */
1842 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
1843 u16 cmd;
1844
1845 /* Realtek's r1000_n.c driver uses '&& 0x01' here. Well... */
1846 if ((RTL_R8(Config2) & 0x07) & 0x01)
1847 RTL_W32(0x7c, 0x0007ffff);
1848
1849 RTL_W32(0x7c, 0x0007ff00);
1850
1851 pci_read_config_word(pdev, PCI_COMMAND, &cmd);
1852 cmd = cmd & 0xef;
1853 pci_write_config_word(pdev, PCI_COMMAND, cmd);
1854 }
1855
1856
1857 RTL_W8(Cfg9346, Cfg9346_Unlock);
1858 RTL_W8(EarlyTxThres, EarlyTxThld);
1859
1860 /* Low hurts. Let's disable the filtering. */
1861 RTL_W16(RxMaxSize, 16383);
1862
1863 /* Set Rx Config register */
1864 i = rtl8169_rx_config |
1865 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1866 RTL_W32(RxConfig, i);
1867
1868 /* Set DMA burst size and Interframe Gap Time */
1869 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
1870 (InterFrameGap << TxInterFrameGapShift));
1871
1872 tp->cp_cmd |= RTL_R16(CPlusCmd) | PCIMulRW;
1873
1874 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
1875 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
1876 dprintk(KERN_INFO PFX "Set MAC Reg C+CR Offset 0xE0. "
1877 "Bit-3 and bit-14 MUST be 1\n");
1878 tp->cp_cmd |= (1 << 14);
1879 }
1880
1881 RTL_W16(CPlusCmd, tp->cp_cmd);
1882
1883 /*
1884 * Undocumented corner. Supposedly:
1885 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
1886 */
1887 RTL_W16(IntrMitigate, 0x0000);
1888
1889 /*
1890 * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
1891 * register to be written before TxDescAddrLow to work.
1892 * Switching from MMIO to I/O access fixes the issue as well.
1893 */
1894 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr >> 32));
1895 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr & DMA_32BIT_MASK));
1896 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr >> 32));
1897 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr & DMA_32BIT_MASK));
1898 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1899 RTL_W8(Cfg9346, Cfg9346_Lock);
1900
1901 /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
1902 RTL_R8(IntrMask);
1903
1904 RTL_W32(RxMissed, 0);
1905
1906 rtl8169_set_rx_mode(dev);
1907
1908 /* no early-rx interrupts */
1909 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
1910
1911 /* Enable all known interrupts by setting the interrupt mask. */
1912 RTL_W16(IntrMask, rtl8169_intr_mask);
1913
1914 netif_start_queue(dev);
1915 }
1916
1917 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
1918 {
1919 struct rtl8169_private *tp = netdev_priv(dev);
1920 int ret = 0;
1921
1922 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
1923 return -EINVAL;
1924
1925 dev->mtu = new_mtu;
1926
1927 if (!netif_running(dev))
1928 goto out;
1929
1930 rtl8169_down(dev);
1931
1932 rtl8169_set_rxbufsize(tp, dev);
1933
1934 ret = rtl8169_init_ring(dev);
1935 if (ret < 0)
1936 goto out;
1937
1938 netif_poll_enable(dev);
1939
1940 rtl8169_hw_start(dev);
1941
1942 rtl8169_request_timer(dev);
1943
1944 out:
1945 return ret;
1946 }
1947
1948 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
1949 {
1950 desc->addr = 0x0badbadbadbadbadull;
1951 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
1952 }
1953
1954 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
1955 struct sk_buff **sk_buff, struct RxDesc *desc)
1956 {
1957 struct pci_dev *pdev = tp->pci_dev;
1958
1959 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
1960 PCI_DMA_FROMDEVICE);
1961 dev_kfree_skb(*sk_buff);
1962 *sk_buff = NULL;
1963 rtl8169_make_unusable_by_asic(desc);
1964 }
1965
1966 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
1967 {
1968 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
1969
1970 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
1971 }
1972
1973 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
1974 u32 rx_buf_sz)
1975 {
1976 desc->addr = cpu_to_le64(mapping);
1977 wmb();
1978 rtl8169_mark_to_asic(desc, rx_buf_sz);
1979 }
1980
1981 static int rtl8169_alloc_rx_skb(struct pci_dev *pdev, struct sk_buff **sk_buff,
1982 struct RxDesc *desc, int rx_buf_sz,
1983 unsigned int align)
1984 {
1985 struct sk_buff *skb;
1986 dma_addr_t mapping;
1987 int ret = 0;
1988
1989 skb = dev_alloc_skb(rx_buf_sz + align);
1990 if (!skb)
1991 goto err_out;
1992
1993 skb_reserve(skb, align);
1994 *sk_buff = skb;
1995
1996 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
1997 PCI_DMA_FROMDEVICE);
1998
1999 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2000
2001 out:
2002 return ret;
2003
2004 err_out:
2005 ret = -ENOMEM;
2006 rtl8169_make_unusable_by_asic(desc);
2007 goto out;
2008 }
2009
2010 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2011 {
2012 int i;
2013
2014 for (i = 0; i < NUM_RX_DESC; i++) {
2015 if (tp->Rx_skbuff[i]) {
2016 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2017 tp->RxDescArray + i);
2018 }
2019 }
2020 }
2021
2022 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2023 u32 start, u32 end)
2024 {
2025 u32 cur;
2026
2027 for (cur = start; end - cur > 0; cur++) {
2028 int ret, i = cur % NUM_RX_DESC;
2029
2030 if (tp->Rx_skbuff[i])
2031 continue;
2032
2033 ret = rtl8169_alloc_rx_skb(tp->pci_dev, tp->Rx_skbuff + i,
2034 tp->RxDescArray + i, tp->rx_buf_sz, tp->align);
2035 if (ret < 0)
2036 break;
2037 }
2038 return cur - start;
2039 }
2040
2041 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2042 {
2043 desc->opts1 |= cpu_to_le32(RingEnd);
2044 }
2045
2046 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2047 {
2048 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2049 }
2050
2051 static int rtl8169_init_ring(struct net_device *dev)
2052 {
2053 struct rtl8169_private *tp = netdev_priv(dev);
2054
2055 rtl8169_init_ring_indexes(tp);
2056
2057 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2058 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2059
2060 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2061 goto err_out;
2062
2063 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2064
2065 return 0;
2066
2067 err_out:
2068 rtl8169_rx_clear(tp);
2069 return -ENOMEM;
2070 }
2071
2072 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2073 struct TxDesc *desc)
2074 {
2075 unsigned int len = tx_skb->len;
2076
2077 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2078 desc->opts1 = 0x00;
2079 desc->opts2 = 0x00;
2080 desc->addr = 0x00;
2081 tx_skb->len = 0;
2082 }
2083
2084 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2085 {
2086 unsigned int i;
2087
2088 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2089 unsigned int entry = i % NUM_TX_DESC;
2090 struct ring_info *tx_skb = tp->tx_skb + entry;
2091 unsigned int len = tx_skb->len;
2092
2093 if (len) {
2094 struct sk_buff *skb = tx_skb->skb;
2095
2096 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2097 tp->TxDescArray + entry);
2098 if (skb) {
2099 dev_kfree_skb(skb);
2100 tx_skb->skb = NULL;
2101 }
2102 tp->stats.tx_dropped++;
2103 }
2104 }
2105 tp->cur_tx = tp->dirty_tx = 0;
2106 }
2107
2108 static void rtl8169_schedule_work(struct net_device *dev, void (*task)(void *))
2109 {
2110 struct rtl8169_private *tp = netdev_priv(dev);
2111
2112 PREPARE_WORK(&tp->task, task, dev);
2113 schedule_delayed_work(&tp->task, 4);
2114 }
2115
2116 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2117 {
2118 struct rtl8169_private *tp = netdev_priv(dev);
2119 void __iomem *ioaddr = tp->mmio_addr;
2120
2121 synchronize_irq(dev->irq);
2122
2123 /* Wait for any pending NAPI task to complete */
2124 netif_poll_disable(dev);
2125
2126 rtl8169_irq_mask_and_ack(ioaddr);
2127
2128 netif_poll_enable(dev);
2129 }
2130
2131 static void rtl8169_reinit_task(void *_data)
2132 {
2133 struct net_device *dev = _data;
2134 int ret;
2135
2136 if (netif_running(dev)) {
2137 rtl8169_wait_for_quiescence(dev);
2138 rtl8169_close(dev);
2139 }
2140
2141 ret = rtl8169_open(dev);
2142 if (unlikely(ret < 0)) {
2143 if (net_ratelimit()) {
2144 struct rtl8169_private *tp = netdev_priv(dev);
2145
2146 if (netif_msg_drv(tp)) {
2147 printk(PFX KERN_ERR
2148 "%s: reinit failure (status = %d)."
2149 " Rescheduling.\n", dev->name, ret);
2150 }
2151 }
2152 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2153 }
2154 }
2155
2156 static void rtl8169_reset_task(void *_data)
2157 {
2158 struct net_device *dev = _data;
2159 struct rtl8169_private *tp = netdev_priv(dev);
2160
2161 if (!netif_running(dev))
2162 return;
2163
2164 rtl8169_wait_for_quiescence(dev);
2165
2166 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr);
2167 rtl8169_tx_clear(tp);
2168
2169 if (tp->dirty_rx == tp->cur_rx) {
2170 rtl8169_init_ring_indexes(tp);
2171 rtl8169_hw_start(dev);
2172 netif_wake_queue(dev);
2173 } else {
2174 if (net_ratelimit()) {
2175 struct rtl8169_private *tp = netdev_priv(dev);
2176
2177 if (netif_msg_intr(tp)) {
2178 printk(PFX KERN_EMERG
2179 "%s: Rx buffers shortage\n", dev->name);
2180 }
2181 }
2182 rtl8169_schedule_work(dev, rtl8169_reset_task);
2183 }
2184 }
2185
2186 static void rtl8169_tx_timeout(struct net_device *dev)
2187 {
2188 struct rtl8169_private *tp = netdev_priv(dev);
2189
2190 rtl8169_hw_reset(tp->mmio_addr);
2191
2192 /* Let's wait a bit while any (async) irq lands on */
2193 rtl8169_schedule_work(dev, rtl8169_reset_task);
2194 }
2195
2196 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2197 u32 opts1)
2198 {
2199 struct skb_shared_info *info = skb_shinfo(skb);
2200 unsigned int cur_frag, entry;
2201 struct TxDesc *txd;
2202
2203 entry = tp->cur_tx;
2204 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2205 skb_frag_t *frag = info->frags + cur_frag;
2206 dma_addr_t mapping;
2207 u32 status, len;
2208 void *addr;
2209
2210 entry = (entry + 1) % NUM_TX_DESC;
2211
2212 txd = tp->TxDescArray + entry;
2213 len = frag->size;
2214 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2215 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2216
2217 /* anti gcc 2.95.3 bugware (sic) */
2218 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2219
2220 txd->opts1 = cpu_to_le32(status);
2221 txd->addr = cpu_to_le64(mapping);
2222
2223 tp->tx_skb[entry].len = len;
2224 }
2225
2226 if (cur_frag) {
2227 tp->tx_skb[entry].skb = skb;
2228 txd->opts1 |= cpu_to_le32(LastFrag);
2229 }
2230
2231 return cur_frag;
2232 }
2233
2234 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2235 {
2236 if (dev->features & NETIF_F_TSO) {
2237 u32 mss = skb_shinfo(skb)->gso_size;
2238
2239 if (mss)
2240 return LargeSend | ((mss & MSSMask) << MSSShift);
2241 }
2242 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2243 const struct iphdr *ip = skb->nh.iph;
2244
2245 if (ip->protocol == IPPROTO_TCP)
2246 return IPCS | TCPCS;
2247 else if (ip->protocol == IPPROTO_UDP)
2248 return IPCS | UDPCS;
2249 WARN_ON(1); /* we need a WARN() */
2250 }
2251 return 0;
2252 }
2253
2254 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2255 {
2256 struct rtl8169_private *tp = netdev_priv(dev);
2257 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2258 struct TxDesc *txd = tp->TxDescArray + entry;
2259 void __iomem *ioaddr = tp->mmio_addr;
2260 dma_addr_t mapping;
2261 u32 status, len;
2262 u32 opts1;
2263 int ret = NETDEV_TX_OK;
2264
2265 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2266 if (netif_msg_drv(tp)) {
2267 printk(KERN_ERR
2268 "%s: BUG! Tx Ring full when queue awake!\n",
2269 dev->name);
2270 }
2271 goto err_stop;
2272 }
2273
2274 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2275 goto err_stop;
2276
2277 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2278
2279 frags = rtl8169_xmit_frags(tp, skb, opts1);
2280 if (frags) {
2281 len = skb_headlen(skb);
2282 opts1 |= FirstFrag;
2283 } else {
2284 len = skb->len;
2285
2286 if (unlikely(len < ETH_ZLEN)) {
2287 if (skb_padto(skb, ETH_ZLEN))
2288 goto err_update_stats;
2289 len = ETH_ZLEN;
2290 }
2291
2292 opts1 |= FirstFrag | LastFrag;
2293 tp->tx_skb[entry].skb = skb;
2294 }
2295
2296 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2297
2298 tp->tx_skb[entry].len = len;
2299 txd->addr = cpu_to_le64(mapping);
2300 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2301
2302 wmb();
2303
2304 /* anti gcc 2.95.3 bugware (sic) */
2305 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2306 txd->opts1 = cpu_to_le32(status);
2307
2308 dev->trans_start = jiffies;
2309
2310 tp->cur_tx += frags + 1;
2311
2312 smp_wmb();
2313
2314 RTL_W8(TxPoll, 0x40); /* set polling bit */
2315
2316 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2317 netif_stop_queue(dev);
2318 smp_rmb();
2319 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2320 netif_wake_queue(dev);
2321 }
2322
2323 out:
2324 return ret;
2325
2326 err_stop:
2327 netif_stop_queue(dev);
2328 ret = NETDEV_TX_BUSY;
2329 err_update_stats:
2330 tp->stats.tx_dropped++;
2331 goto out;
2332 }
2333
2334 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2335 {
2336 struct rtl8169_private *tp = netdev_priv(dev);
2337 struct pci_dev *pdev = tp->pci_dev;
2338 void __iomem *ioaddr = tp->mmio_addr;
2339 u16 pci_status, pci_cmd;
2340
2341 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2342 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2343
2344 if (netif_msg_intr(tp)) {
2345 printk(KERN_ERR
2346 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2347 dev->name, pci_cmd, pci_status);
2348 }
2349
2350 /*
2351 * The recovery sequence below admits a very elaborated explanation:
2352 * - it seems to work;
2353 * - I did not see what else could be done.
2354 *
2355 * Feel free to adjust to your needs.
2356 */
2357 pci_write_config_word(pdev, PCI_COMMAND,
2358 pci_cmd | PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
2359
2360 pci_write_config_word(pdev, PCI_STATUS,
2361 pci_status & (PCI_STATUS_DETECTED_PARITY |
2362 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2363 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2364
2365 /* The infamous DAC f*ckup only happens at boot time */
2366 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2367 if (netif_msg_intr(tp))
2368 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2369 tp->cp_cmd &= ~PCIDAC;
2370 RTL_W16(CPlusCmd, tp->cp_cmd);
2371 dev->features &= ~NETIF_F_HIGHDMA;
2372 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2373 }
2374
2375 rtl8169_hw_reset(ioaddr);
2376 }
2377
2378 static void
2379 rtl8169_tx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2380 void __iomem *ioaddr)
2381 {
2382 unsigned int dirty_tx, tx_left;
2383
2384 assert(dev != NULL);
2385 assert(tp != NULL);
2386 assert(ioaddr != NULL);
2387
2388 dirty_tx = tp->dirty_tx;
2389 smp_rmb();
2390 tx_left = tp->cur_tx - dirty_tx;
2391
2392 while (tx_left > 0) {
2393 unsigned int entry = dirty_tx % NUM_TX_DESC;
2394 struct ring_info *tx_skb = tp->tx_skb + entry;
2395 u32 len = tx_skb->len;
2396 u32 status;
2397
2398 rmb();
2399 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2400 if (status & DescOwn)
2401 break;
2402
2403 tp->stats.tx_bytes += len;
2404 tp->stats.tx_packets++;
2405
2406 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
2407
2408 if (status & LastFrag) {
2409 dev_kfree_skb_irq(tx_skb->skb);
2410 tx_skb->skb = NULL;
2411 }
2412 dirty_tx++;
2413 tx_left--;
2414 }
2415
2416 if (tp->dirty_tx != dirty_tx) {
2417 tp->dirty_tx = dirty_tx;
2418 smp_wmb();
2419 if (netif_queue_stopped(dev) &&
2420 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
2421 netif_wake_queue(dev);
2422 }
2423 }
2424 }
2425
2426 static inline int rtl8169_fragmented_frame(u32 status)
2427 {
2428 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2429 }
2430
2431 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2432 {
2433 u32 opts1 = le32_to_cpu(desc->opts1);
2434 u32 status = opts1 & RxProtoMask;
2435
2436 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
2437 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
2438 ((status == RxProtoIP) && !(opts1 & IPFail)))
2439 skb->ip_summed = CHECKSUM_UNNECESSARY;
2440 else
2441 skb->ip_summed = CHECKSUM_NONE;
2442 }
2443
2444 static inline int rtl8169_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
2445 struct RxDesc *desc, int rx_buf_sz,
2446 unsigned int align)
2447 {
2448 int ret = -1;
2449
2450 if (pkt_size < rx_copybreak) {
2451 struct sk_buff *skb;
2452
2453 skb = dev_alloc_skb(pkt_size + align);
2454 if (skb) {
2455 skb_reserve(skb, align);
2456 eth_copy_and_sum(skb, sk_buff[0]->data, pkt_size, 0);
2457 *sk_buff = skb;
2458 rtl8169_mark_to_asic(desc, rx_buf_sz);
2459 ret = 0;
2460 }
2461 }
2462 return ret;
2463 }
2464
2465 static int
2466 rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2467 void __iomem *ioaddr)
2468 {
2469 unsigned int cur_rx, rx_left;
2470 unsigned int delta, count;
2471
2472 assert(dev != NULL);
2473 assert(tp != NULL);
2474 assert(ioaddr != NULL);
2475
2476 cur_rx = tp->cur_rx;
2477 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
2478 rx_left = rtl8169_rx_quota(rx_left, (u32) dev->quota);
2479
2480 for (; rx_left > 0; rx_left--, cur_rx++) {
2481 unsigned int entry = cur_rx % NUM_RX_DESC;
2482 struct RxDesc *desc = tp->RxDescArray + entry;
2483 u32 status;
2484
2485 rmb();
2486 status = le32_to_cpu(desc->opts1);
2487
2488 if (status & DescOwn)
2489 break;
2490 if (unlikely(status & RxRES)) {
2491 if (netif_msg_rx_err(tp)) {
2492 printk(KERN_INFO
2493 "%s: Rx ERROR. status = %08x\n",
2494 dev->name, status);
2495 }
2496 tp->stats.rx_errors++;
2497 if (status & (RxRWT | RxRUNT))
2498 tp->stats.rx_length_errors++;
2499 if (status & RxCRC)
2500 tp->stats.rx_crc_errors++;
2501 if (status & RxFOVF) {
2502 rtl8169_schedule_work(dev, rtl8169_reset_task);
2503 tp->stats.rx_fifo_errors++;
2504 }
2505 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2506 } else {
2507 struct sk_buff *skb = tp->Rx_skbuff[entry];
2508 int pkt_size = (status & 0x00001FFF) - 4;
2509 void (*pci_action)(struct pci_dev *, dma_addr_t,
2510 size_t, int) = pci_dma_sync_single_for_device;
2511
2512 /*
2513 * The driver does not support incoming fragmented
2514 * frames. They are seen as a symptom of over-mtu
2515 * sized frames.
2516 */
2517 if (unlikely(rtl8169_fragmented_frame(status))) {
2518 tp->stats.rx_dropped++;
2519 tp->stats.rx_length_errors++;
2520 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2521 continue;
2522 }
2523
2524 rtl8169_rx_csum(skb, desc);
2525
2526 pci_dma_sync_single_for_cpu(tp->pci_dev,
2527 le64_to_cpu(desc->addr), tp->rx_buf_sz,
2528 PCI_DMA_FROMDEVICE);
2529
2530 if (rtl8169_try_rx_copy(&skb, pkt_size, desc,
2531 tp->rx_buf_sz, tp->align)) {
2532 pci_action = pci_unmap_single;
2533 tp->Rx_skbuff[entry] = NULL;
2534 }
2535
2536 pci_action(tp->pci_dev, le64_to_cpu(desc->addr),
2537 tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
2538
2539 skb->dev = dev;
2540 skb_put(skb, pkt_size);
2541 skb->protocol = eth_type_trans(skb, dev);
2542
2543 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
2544 rtl8169_rx_skb(skb);
2545
2546 dev->last_rx = jiffies;
2547 tp->stats.rx_bytes += pkt_size;
2548 tp->stats.rx_packets++;
2549 }
2550 }
2551
2552 count = cur_rx - tp->cur_rx;
2553 tp->cur_rx = cur_rx;
2554
2555 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
2556 if (!delta && count && netif_msg_intr(tp))
2557 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
2558 tp->dirty_rx += delta;
2559
2560 /*
2561 * FIXME: until there is periodic timer to try and refill the ring,
2562 * a temporary shortage may definitely kill the Rx process.
2563 * - disable the asic to try and avoid an overflow and kick it again
2564 * after refill ?
2565 * - how do others driver handle this condition (Uh oh...).
2566 */
2567 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
2568 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
2569
2570 return count;
2571 }
2572
2573 /* The interrupt handler does all of the Rx thread work and cleans up after the Tx thread. */
2574 static irqreturn_t
2575 rtl8169_interrupt(int irq, void *dev_instance)
2576 {
2577 struct net_device *dev = (struct net_device *) dev_instance;
2578 struct rtl8169_private *tp = netdev_priv(dev);
2579 int boguscnt = max_interrupt_work;
2580 void __iomem *ioaddr = tp->mmio_addr;
2581 int status;
2582 int handled = 0;
2583
2584 do {
2585 status = RTL_R16(IntrStatus);
2586
2587 /* hotplug/major error/no more work/shared irq */
2588 if ((status == 0xFFFF) || !status)
2589 break;
2590
2591 handled = 1;
2592
2593 if (unlikely(!netif_running(dev))) {
2594 rtl8169_asic_down(ioaddr);
2595 goto out;
2596 }
2597
2598 status &= tp->intr_mask;
2599 RTL_W16(IntrStatus,
2600 (status & RxFIFOOver) ? (status | RxOverflow) : status);
2601
2602 if (!(status & rtl8169_intr_mask))
2603 break;
2604
2605 if (unlikely(status & SYSErr)) {
2606 rtl8169_pcierr_interrupt(dev);
2607 break;
2608 }
2609
2610 if (status & LinkChg)
2611 rtl8169_check_link_status(dev, tp, ioaddr);
2612
2613 #ifdef CONFIG_R8169_NAPI
2614 RTL_W16(IntrMask, rtl8169_intr_mask & ~rtl8169_napi_event);
2615 tp->intr_mask = ~rtl8169_napi_event;
2616
2617 if (likely(netif_rx_schedule_prep(dev)))
2618 __netif_rx_schedule(dev);
2619 else if (netif_msg_intr(tp)) {
2620 printk(KERN_INFO "%s: interrupt %04x taken in poll\n",
2621 dev->name, status);
2622 }
2623 break;
2624 #else
2625 /* Rx interrupt */
2626 if (status & (RxOK | RxOverflow | RxFIFOOver)) {
2627 rtl8169_rx_interrupt(dev, tp, ioaddr);
2628 }
2629 /* Tx interrupt */
2630 if (status & (TxOK | TxErr))
2631 rtl8169_tx_interrupt(dev, tp, ioaddr);
2632 #endif
2633
2634 boguscnt--;
2635 } while (boguscnt > 0);
2636
2637 if (boguscnt <= 0) {
2638 if (netif_msg_intr(tp) && net_ratelimit() ) {
2639 printk(KERN_WARNING
2640 "%s: Too much work at interrupt!\n", dev->name);
2641 }
2642 /* Clear all interrupt sources. */
2643 RTL_W16(IntrStatus, 0xffff);
2644 }
2645 out:
2646 return IRQ_RETVAL(handled);
2647 }
2648
2649 #ifdef CONFIG_R8169_NAPI
2650 static int rtl8169_poll(struct net_device *dev, int *budget)
2651 {
2652 unsigned int work_done, work_to_do = min(*budget, dev->quota);
2653 struct rtl8169_private *tp = netdev_priv(dev);
2654 void __iomem *ioaddr = tp->mmio_addr;
2655
2656 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr);
2657 rtl8169_tx_interrupt(dev, tp, ioaddr);
2658
2659 *budget -= work_done;
2660 dev->quota -= work_done;
2661
2662 if (work_done < work_to_do) {
2663 netif_rx_complete(dev);
2664 tp->intr_mask = 0xffff;
2665 /*
2666 * 20040426: the barrier is not strictly required but the
2667 * behavior of the irq handler could be less predictable
2668 * without it. Btw, the lack of flush for the posted pci
2669 * write is safe - FR
2670 */
2671 smp_wmb();
2672 RTL_W16(IntrMask, rtl8169_intr_mask);
2673 }
2674
2675 return (work_done >= work_to_do);
2676 }
2677 #endif
2678
2679 static void rtl8169_down(struct net_device *dev)
2680 {
2681 struct rtl8169_private *tp = netdev_priv(dev);
2682 void __iomem *ioaddr = tp->mmio_addr;
2683 unsigned int poll_locked = 0;
2684 unsigned int intrmask;
2685
2686 rtl8169_delete_timer(dev);
2687
2688 netif_stop_queue(dev);
2689
2690 flush_scheduled_work();
2691
2692 core_down:
2693 spin_lock_irq(&tp->lock);
2694
2695 rtl8169_asic_down(ioaddr);
2696
2697 /* Update the error counts. */
2698 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2699 RTL_W32(RxMissed, 0);
2700
2701 spin_unlock_irq(&tp->lock);
2702
2703 synchronize_irq(dev->irq);
2704
2705 if (!poll_locked) {
2706 netif_poll_disable(dev);
2707 poll_locked++;
2708 }
2709
2710 /* Give a racing hard_start_xmit a few cycles to complete. */
2711 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
2712
2713 /*
2714 * And now for the 50k$ question: are IRQ disabled or not ?
2715 *
2716 * Two paths lead here:
2717 * 1) dev->close
2718 * -> netif_running() is available to sync the current code and the
2719 * IRQ handler. See rtl8169_interrupt for details.
2720 * 2) dev->change_mtu
2721 * -> rtl8169_poll can not be issued again and re-enable the
2722 * interruptions. Let's simply issue the IRQ down sequence again.
2723 *
2724 * No loop if hotpluged or major error (0xffff).
2725 */
2726 intrmask = RTL_R16(IntrMask);
2727 if (intrmask && (intrmask != 0xffff))
2728 goto core_down;
2729
2730 rtl8169_tx_clear(tp);
2731
2732 rtl8169_rx_clear(tp);
2733 }
2734
2735 static int rtl8169_close(struct net_device *dev)
2736 {
2737 struct rtl8169_private *tp = netdev_priv(dev);
2738 struct pci_dev *pdev = tp->pci_dev;
2739
2740 rtl8169_down(dev);
2741
2742 free_irq(dev->irq, dev);
2743
2744 netif_poll_enable(dev);
2745
2746 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2747 tp->RxPhyAddr);
2748 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2749 tp->TxPhyAddr);
2750 tp->TxDescArray = NULL;
2751 tp->RxDescArray = NULL;
2752
2753 return 0;
2754 }
2755
2756 static void
2757 rtl8169_set_rx_mode(struct net_device *dev)
2758 {
2759 struct rtl8169_private *tp = netdev_priv(dev);
2760 void __iomem *ioaddr = tp->mmio_addr;
2761 unsigned long flags;
2762 u32 mc_filter[2]; /* Multicast hash filter */
2763 int i, rx_mode;
2764 u32 tmp = 0;
2765
2766 if (dev->flags & IFF_PROMISC) {
2767 /* Unconditionally log net taps. */
2768 if (netif_msg_link(tp)) {
2769 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2770 dev->name);
2771 }
2772 rx_mode =
2773 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2774 AcceptAllPhys;
2775 mc_filter[1] = mc_filter[0] = 0xffffffff;
2776 } else if ((dev->mc_count > multicast_filter_limit)
2777 || (dev->flags & IFF_ALLMULTI)) {
2778 /* Too many to filter perfectly -- accept all multicasts. */
2779 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2780 mc_filter[1] = mc_filter[0] = 0xffffffff;
2781 } else {
2782 struct dev_mc_list *mclist;
2783 rx_mode = AcceptBroadcast | AcceptMyPhys;
2784 mc_filter[1] = mc_filter[0] = 0;
2785 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2786 i++, mclist = mclist->next) {
2787 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2788 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2789 rx_mode |= AcceptMulticast;
2790 }
2791 }
2792
2793 spin_lock_irqsave(&tp->lock, flags);
2794
2795 tmp = rtl8169_rx_config | rx_mode |
2796 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2797
2798 if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
2799 (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
2800 (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2801 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
2802 (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
2803 mc_filter[0] = 0xffffffff;
2804 mc_filter[1] = 0xffffffff;
2805 }
2806
2807 RTL_W32(RxConfig, tmp);
2808 RTL_W32(MAR0 + 0, mc_filter[0]);
2809 RTL_W32(MAR0 + 4, mc_filter[1]);
2810
2811 spin_unlock_irqrestore(&tp->lock, flags);
2812 }
2813
2814 /**
2815 * rtl8169_get_stats - Get rtl8169 read/write statistics
2816 * @dev: The Ethernet Device to get statistics for
2817 *
2818 * Get TX/RX statistics for rtl8169
2819 */
2820 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
2821 {
2822 struct rtl8169_private *tp = netdev_priv(dev);
2823 void __iomem *ioaddr = tp->mmio_addr;
2824 unsigned long flags;
2825
2826 if (netif_running(dev)) {
2827 spin_lock_irqsave(&tp->lock, flags);
2828 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2829 RTL_W32(RxMissed, 0);
2830 spin_unlock_irqrestore(&tp->lock, flags);
2831 }
2832
2833 return &tp->stats;
2834 }
2835
2836 #ifdef CONFIG_PM
2837
2838 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
2839 {
2840 struct net_device *dev = pci_get_drvdata(pdev);
2841 struct rtl8169_private *tp = netdev_priv(dev);
2842 void __iomem *ioaddr = tp->mmio_addr;
2843
2844 if (!netif_running(dev))
2845 goto out;
2846
2847 netif_device_detach(dev);
2848 netif_stop_queue(dev);
2849
2850 spin_lock_irq(&tp->lock);
2851
2852 rtl8169_asic_down(ioaddr);
2853
2854 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2855 RTL_W32(RxMissed, 0);
2856
2857 spin_unlock_irq(&tp->lock);
2858
2859 pci_save_state(pdev);
2860 pci_enable_wake(pdev, pci_choose_state(pdev, state), tp->wol_enabled);
2861 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2862 out:
2863 return 0;
2864 }
2865
2866 static int rtl8169_resume(struct pci_dev *pdev)
2867 {
2868 struct net_device *dev = pci_get_drvdata(pdev);
2869
2870 if (!netif_running(dev))
2871 goto out;
2872
2873 netif_device_attach(dev);
2874
2875 pci_set_power_state(pdev, PCI_D0);
2876 pci_restore_state(pdev);
2877 pci_enable_wake(pdev, PCI_D0, 0);
2878
2879 rtl8169_schedule_work(dev, rtl8169_reset_task);
2880 out:
2881 return 0;
2882 }
2883
2884 #endif /* CONFIG_PM */
2885
2886 static struct pci_driver rtl8169_pci_driver = {
2887 .name = MODULENAME,
2888 .id_table = rtl8169_pci_tbl,
2889 .probe = rtl8169_init_one,
2890 .remove = __devexit_p(rtl8169_remove_one),
2891 #ifdef CONFIG_PM
2892 .suspend = rtl8169_suspend,
2893 .resume = rtl8169_resume,
2894 #endif
2895 };
2896
2897 static int __init
2898 rtl8169_init_module(void)
2899 {
2900 return pci_register_driver(&rtl8169_pci_driver);
2901 }
2902
2903 static void __exit
2904 rtl8169_cleanup_module(void)
2905 {
2906 pci_unregister_driver(&rtl8169_pci_driver);
2907 }
2908
2909 module_init(rtl8169_init_module);
2910 module_exit(rtl8169_cleanup_module);
Linux kernel - Deliverables
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