?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
sched: clean up wakeup balancing, move wake_affine()
[wrt350n-kernel.git] / drivers / net / r8169.c
blob3acfeeabdee1ee44cc842695b0d0ddb905e2d044
1 /*
2 * r8169.c: RealTek 8169/8168/8101 ethernet driver.
3 *
4 * Copyright (c) 2002 ShuChen <shuchen@realtek.com.tw>
5 * Copyright (c) 2003 - 2007 Francois Romieu <romieu@fr.zoreil.com>
6 * Copyright (c) a lot of people too. Please respect their work.
7 *
8 * See MAINTAINERS file for support contact information.
9 */
10
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/pci.h>
14 #include <linux/netdevice.h>
15 #include <linux/etherdevice.h>
16 #include <linux/delay.h>
17 #include <linux/ethtool.h>
18 #include <linux/mii.h>
19 #include <linux/if_vlan.h>
20 #include <linux/crc32.h>
21 #include <linux/in.h>
22 #include <linux/ip.h>
23 #include <linux/tcp.h>
24 #include <linux/init.h>
25 #include <linux/dma-mapping.h>
26
27 #include <asm/system.h>
28 #include <asm/io.h>
29 #include <asm/irq.h>
30
31 #ifdef CONFIG_R8169_NAPI
32 #define NAPI_SUFFIX "-NAPI"
33 #else
34 #define NAPI_SUFFIX ""
35 #endif
36
37 #define RTL8169_VERSION "2.2LK" NAPI_SUFFIX
38 #define MODULENAME "r8169"
39 #define PFX MODULENAME ": "
40
41 #ifdef RTL8169_DEBUG
42 #define assert(expr) \
43 if (!(expr)) { \
44 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
45 #expr,__FILE__,__FUNCTION__,__LINE__); \
46 }
47 #define dprintk(fmt, args...) \
48 do { printk(KERN_DEBUG PFX fmt, ## args); } while (0)
49 #else
50 #define assert(expr) do {} while (0)
51 #define dprintk(fmt, args...) do {} while (0)
52 #endif /* RTL8169_DEBUG */
53
54 #define R8169_MSG_DEFAULT \
55 (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
56
57 #define TX_BUFFS_AVAIL(tp) \
58 (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
59
60 #ifdef CONFIG_R8169_NAPI
61 #define rtl8169_rx_skb netif_receive_skb
62 #define rtl8169_rx_hwaccel_skb vlan_hwaccel_receive_skb
63 #define rtl8169_rx_quota(count, quota) min(count, quota)
64 #else
65 #define rtl8169_rx_skb netif_rx
66 #define rtl8169_rx_hwaccel_skb vlan_hwaccel_rx
67 #define rtl8169_rx_quota(count, quota) count
68 #endif
69
70 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
71 static const int max_interrupt_work = 20;
72
73 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
74 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
75 static const int multicast_filter_limit = 32;
76
77 /* MAC address length */
78 #define MAC_ADDR_LEN 6
79
80 #define RX_FIFO_THRESH 7 /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
81 #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
82 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
83 #define EarlyTxThld 0x3F /* 0x3F means NO early transmit */
84 #define RxPacketMaxSize 0x3FE8 /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
85 #define SafeMtu 0x1c20 /* ... actually life sucks beyond ~7k */
86 #define InterFrameGap 0x03 /* 3 means InterFrameGap = the shortest one */
87
88 #define R8169_REGS_SIZE 256
89 #define R8169_NAPI_WEIGHT 64
90 #define NUM_TX_DESC 64 /* Number of Tx descriptor registers */
91 #define NUM_RX_DESC 256 /* Number of Rx descriptor registers */
92 #define RX_BUF_SIZE 1536 /* Rx Buffer size */
93 #define R8169_TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc))
94 #define R8169_RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))
95
96 #define RTL8169_TX_TIMEOUT (6*HZ)
97 #define RTL8169_PHY_TIMEOUT (10*HZ)
98
99 /* write/read MMIO register */
100 #define RTL_W8(reg, val8) writeb ((val8), ioaddr + (reg))
101 #define RTL_W16(reg, val16) writew ((val16), ioaddr + (reg))
102 #define RTL_W32(reg, val32) writel ((val32), ioaddr + (reg))
103 #define RTL_R8(reg) readb (ioaddr + (reg))
104 #define RTL_R16(reg) readw (ioaddr + (reg))
105 #define RTL_R32(reg) ((unsigned long) readl (ioaddr + (reg)))
106
107 enum mac_version {
108 RTL_GIGA_MAC_VER_01 = 0x01, // 8169
109 RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
110 RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
111 RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
112 RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
113 RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
114 RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
115 RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
116 RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
117 RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
118 RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
119 RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
120 RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
121 RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
122 RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
123 RTL_GIGA_MAC_VER_20 = 0x14 // 8168C
124 };
125
126 #define _R(NAME,MAC,MASK) \
127 { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
128
129 static const struct {
130 const char *name;
131 u8 mac_version;
132 u32 RxConfigMask; /* Clears the bits supported by this chip */
133 } rtl_chip_info[] = {
134 _R("RTL8169", RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
135 _R("RTL8169s", RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
136 _R("RTL8110s", RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
137 _R("RTL8169sb/8110sb", RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
138 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
139 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
140 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
141 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
142 _R("RTL8101e", RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
143 _R("RTL8100e", RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
144 _R("RTL8100e", RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
145 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
146 _R("RTL8101e", RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
147 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
148 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
149 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_20, 0xff7e1880) // PCI-E
150 };
151 #undef _R
152
153 enum cfg_version {
154 RTL_CFG_0 = 0x00,
155 RTL_CFG_1,
156 RTL_CFG_2
157 };
158
159 static void rtl_hw_start_8169(struct net_device *);
160 static void rtl_hw_start_8168(struct net_device *);
161 static void rtl_hw_start_8101(struct net_device *);
162
163 static struct pci_device_id rtl8169_pci_tbl[] = {
164 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
165 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
166 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167), 0, 0, RTL_CFG_0 },
167 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168), 0, 0, RTL_CFG_1 },
168 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), 0, 0, RTL_CFG_0 },
169 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4300), 0, 0, RTL_CFG_0 },
170 { PCI_DEVICE(PCI_VENDOR_ID_AT, 0xc107), 0, 0, RTL_CFG_0 },
171 { PCI_DEVICE(0x16ec, 0x0116), 0, 0, RTL_CFG_0 },
172 { PCI_VENDOR_ID_LINKSYS, 0x1032,
173 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
174 { 0x0001, 0x8168,
175 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
176 {0,},
177 };
178
179 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
180
181 static int rx_copybreak = 200;
182 static int use_dac;
183 static struct {
184 u32 msg_enable;
185 } debug = { -1 };
186
187 enum rtl_registers {
188 MAC0 = 0, /* Ethernet hardware address. */
189 MAC4 = 4,
190 MAR0 = 8, /* Multicast filter. */
191 CounterAddrLow = 0x10,
192 CounterAddrHigh = 0x14,
193 TxDescStartAddrLow = 0x20,
194 TxDescStartAddrHigh = 0x24,
195 TxHDescStartAddrLow = 0x28,
196 TxHDescStartAddrHigh = 0x2c,
197 FLASH = 0x30,
198 ERSR = 0x36,
199 ChipCmd = 0x37,
200 TxPoll = 0x38,
201 IntrMask = 0x3c,
202 IntrStatus = 0x3e,
203 TxConfig = 0x40,
204 RxConfig = 0x44,
205 RxMissed = 0x4c,
206 Cfg9346 = 0x50,
207 Config0 = 0x51,
208 Config1 = 0x52,
209 Config2 = 0x53,
210 Config3 = 0x54,
211 Config4 = 0x55,
212 Config5 = 0x56,
213 MultiIntr = 0x5c,
214 PHYAR = 0x60,
215 TBICSR = 0x64,
216 TBI_ANAR = 0x68,
217 TBI_LPAR = 0x6a,
218 PHYstatus = 0x6c,
219 RxMaxSize = 0xda,
220 CPlusCmd = 0xe0,
221 IntrMitigate = 0xe2,
222 RxDescAddrLow = 0xe4,
223 RxDescAddrHigh = 0xe8,
224 EarlyTxThres = 0xec,
225 FuncEvent = 0xf0,
226 FuncEventMask = 0xf4,
227 FuncPresetState = 0xf8,
228 FuncForceEvent = 0xfc,
229 };
230
231 enum rtl_register_content {
232 /* InterruptStatusBits */
233 SYSErr = 0x8000,
234 PCSTimeout = 0x4000,
235 SWInt = 0x0100,
236 TxDescUnavail = 0x0080,
237 RxFIFOOver = 0x0040,
238 LinkChg = 0x0020,
239 RxOverflow = 0x0010,
240 TxErr = 0x0008,
241 TxOK = 0x0004,
242 RxErr = 0x0002,
243 RxOK = 0x0001,
244
245 /* RxStatusDesc */
246 RxFOVF = (1 << 23),
247 RxRWT = (1 << 22),
248 RxRES = (1 << 21),
249 RxRUNT = (1 << 20),
250 RxCRC = (1 << 19),
251
252 /* ChipCmdBits */
253 CmdReset = 0x10,
254 CmdRxEnb = 0x08,
255 CmdTxEnb = 0x04,
256 RxBufEmpty = 0x01,
257
258 /* TXPoll register p.5 */
259 HPQ = 0x80, /* Poll cmd on the high prio queue */
260 NPQ = 0x40, /* Poll cmd on the low prio queue */
261 FSWInt = 0x01, /* Forced software interrupt */
262
263 /* Cfg9346Bits */
264 Cfg9346_Lock = 0x00,
265 Cfg9346_Unlock = 0xc0,
266
267 /* rx_mode_bits */
268 AcceptErr = 0x20,
269 AcceptRunt = 0x10,
270 AcceptBroadcast = 0x08,
271 AcceptMulticast = 0x04,
272 AcceptMyPhys = 0x02,
273 AcceptAllPhys = 0x01,
274
275 /* RxConfigBits */
276 RxCfgFIFOShift = 13,
277 RxCfgDMAShift = 8,
278
279 /* TxConfigBits */
280 TxInterFrameGapShift = 24,
281 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
282
283 /* Config1 register p.24 */
284 MSIEnable = (1 << 5), /* Enable Message Signaled Interrupt */
285 PMEnable = (1 << 0), /* Power Management Enable */
286
287 /* Config2 register p. 25 */
288 PCI_Clock_66MHz = 0x01,
289 PCI_Clock_33MHz = 0x00,
290
291 /* Config3 register p.25 */
292 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
293 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
294
295 /* Config5 register p.27 */
296 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
297 MWF = (1 << 5), /* Accept Multicast wakeup frame */
298 UWF = (1 << 4), /* Accept Unicast wakeup frame */
299 LanWake = (1 << 1), /* LanWake enable/disable */
300 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
301
302 /* TBICSR p.28 */
303 TBIReset = 0x80000000,
304 TBILoopback = 0x40000000,
305 TBINwEnable = 0x20000000,
306 TBINwRestart = 0x10000000,
307 TBILinkOk = 0x02000000,
308 TBINwComplete = 0x01000000,
309
310 /* CPlusCmd p.31 */
311 PktCntrDisable = (1 << 7), // 8168
312 RxVlan = (1 << 6),
313 RxChkSum = (1 << 5),
314 PCIDAC = (1 << 4),
315 PCIMulRW = (1 << 3),
316 INTT_0 = 0x0000, // 8168
317 INTT_1 = 0x0001, // 8168
318 INTT_2 = 0x0002, // 8168
319 INTT_3 = 0x0003, // 8168
320
321 /* rtl8169_PHYstatus */
322 TBI_Enable = 0x80,
323 TxFlowCtrl = 0x40,
324 RxFlowCtrl = 0x20,
325 _1000bpsF = 0x10,
326 _100bps = 0x08,
327 _10bps = 0x04,
328 LinkStatus = 0x02,
329 FullDup = 0x01,
330
331 /* _TBICSRBit */
332 TBILinkOK = 0x02000000,
333
334 /* DumpCounterCommand */
335 CounterDump = 0x8,
336 };
337
338 enum desc_status_bit {
339 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
340 RingEnd = (1 << 30), /* End of descriptor ring */
341 FirstFrag = (1 << 29), /* First segment of a packet */
342 LastFrag = (1 << 28), /* Final segment of a packet */
343
344 /* Tx private */
345 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
346 MSSShift = 16, /* MSS value position */
347 MSSMask = 0xfff, /* MSS value + LargeSend bit: 12 bits */
348 IPCS = (1 << 18), /* Calculate IP checksum */
349 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
350 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
351 TxVlanTag = (1 << 17), /* Add VLAN tag */
352
353 /* Rx private */
354 PID1 = (1 << 18), /* Protocol ID bit 1/2 */
355 PID0 = (1 << 17), /* Protocol ID bit 2/2 */
356
357 #define RxProtoUDP (PID1)
358 #define RxProtoTCP (PID0)
359 #define RxProtoIP (PID1 | PID0)
360 #define RxProtoMask RxProtoIP
361
362 IPFail = (1 << 16), /* IP checksum failed */
363 UDPFail = (1 << 15), /* UDP/IP checksum failed */
364 TCPFail = (1 << 14), /* TCP/IP checksum failed */
365 RxVlanTag = (1 << 16), /* VLAN tag available */
366 };
367
368 #define RsvdMask 0x3fffc000
369
370 struct TxDesc {
371 __le32 opts1;
372 __le32 opts2;
373 __le64 addr;
374 };
375
376 struct RxDesc {
377 __le32 opts1;
378 __le32 opts2;
379 __le64 addr;
380 };
381
382 struct ring_info {
383 struct sk_buff *skb;
384 u32 len;
385 u8 __pad[sizeof(void *) - sizeof(u32)];
386 };
387
388 enum features {
389 RTL_FEATURE_WOL = (1 << 0),
390 RTL_FEATURE_MSI = (1 << 1),
391 };
392
393 struct rtl8169_private {
394 void __iomem *mmio_addr; /* memory map physical address */
395 struct pci_dev *pci_dev; /* Index of PCI device */
396 struct net_device *dev;
397 #ifdef CONFIG_R8169_NAPI
398 struct napi_struct napi;
399 #endif
400 spinlock_t lock; /* spin lock flag */
401 u32 msg_enable;
402 int chipset;
403 int mac_version;
404 u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
405 u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
406 u32 dirty_rx;
407 u32 dirty_tx;
408 struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
409 struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
410 dma_addr_t TxPhyAddr;
411 dma_addr_t RxPhyAddr;
412 struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
413 struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
414 unsigned align;
415 unsigned rx_buf_sz;
416 struct timer_list timer;
417 u16 cp_cmd;
418 u16 intr_event;
419 u16 napi_event;
420 u16 intr_mask;
421 int phy_auto_nego_reg;
422 int phy_1000_ctrl_reg;
423 #ifdef CONFIG_R8169_VLAN
424 struct vlan_group *vlgrp;
425 #endif
426 int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
427 void (*get_settings)(struct net_device *, struct ethtool_cmd *);
428 void (*phy_reset_enable)(void __iomem *);
429 void (*hw_start)(struct net_device *);
430 unsigned int (*phy_reset_pending)(void __iomem *);
431 unsigned int (*link_ok)(void __iomem *);
432 struct delayed_work task;
433 unsigned features;
434 };
435
436 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
437 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
438 module_param(rx_copybreak, int, 0);
439 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
440 module_param(use_dac, int, 0);
441 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
442 module_param_named(debug, debug.msg_enable, int, 0);
443 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
444 MODULE_LICENSE("GPL");
445 MODULE_VERSION(RTL8169_VERSION);
446
447 static int rtl8169_open(struct net_device *dev);
448 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
449 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
450 static int rtl8169_init_ring(struct net_device *dev);
451 static void rtl_hw_start(struct net_device *dev);
452 static int rtl8169_close(struct net_device *dev);
453 static void rtl_set_rx_mode(struct net_device *dev);
454 static void rtl8169_tx_timeout(struct net_device *dev);
455 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
456 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
457 void __iomem *, u32 budget);
458 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
459 static void rtl8169_down(struct net_device *dev);
460 static void rtl8169_rx_clear(struct rtl8169_private *tp);
461
462 #ifdef CONFIG_R8169_NAPI
463 static int rtl8169_poll(struct napi_struct *napi, int budget);
464 #endif
465
466 static const unsigned int rtl8169_rx_config =
467 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
468
469 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
470 {
471 int i;
472
473 RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
474
475 for (i = 20; i > 0; i--) {
476 /*
477 * Check if the RTL8169 has completed writing to the specified
478 * MII register.
479 */
480 if (!(RTL_R32(PHYAR) & 0x80000000))
481 break;
482 udelay(25);
483 }
484 }
485
486 static int mdio_read(void __iomem *ioaddr, int reg_addr)
487 {
488 int i, value = -1;
489
490 RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
491
492 for (i = 20; i > 0; i--) {
493 /*
494 * Check if the RTL8169 has completed retrieving data from
495 * the specified MII register.
496 */
497 if (RTL_R32(PHYAR) & 0x80000000) {
498 value = RTL_R32(PHYAR) & 0xffff;
499 break;
500 }
501 udelay(25);
502 }
503 return value;
504 }
505
506 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
507 {
508 RTL_W16(IntrMask, 0x0000);
509
510 RTL_W16(IntrStatus, 0xffff);
511 }
512
513 static void rtl8169_asic_down(void __iomem *ioaddr)
514 {
515 RTL_W8(ChipCmd, 0x00);
516 rtl8169_irq_mask_and_ack(ioaddr);
517 RTL_R16(CPlusCmd);
518 }
519
520 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
521 {
522 return RTL_R32(TBICSR) & TBIReset;
523 }
524
525 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
526 {
527 return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
528 }
529
530 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
531 {
532 return RTL_R32(TBICSR) & TBILinkOk;
533 }
534
535 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
536 {
537 return RTL_R8(PHYstatus) & LinkStatus;
538 }
539
540 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
541 {
542 RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
543 }
544
545 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
546 {
547 unsigned int val;
548
549 val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
550 mdio_write(ioaddr, MII_BMCR, val & 0xffff);
551 }
552
553 static void rtl8169_check_link_status(struct net_device *dev,
554 struct rtl8169_private *tp,
555 void __iomem *ioaddr)
556 {
557 unsigned long flags;
558
559 spin_lock_irqsave(&tp->lock, flags);
560 if (tp->link_ok(ioaddr)) {
561 netif_carrier_on(dev);
562 if (netif_msg_ifup(tp))
563 printk(KERN_INFO PFX "%s: link up\n", dev->name);
564 } else {
565 if (netif_msg_ifdown(tp))
566 printk(KERN_INFO PFX "%s: link down\n", dev->name);
567 netif_carrier_off(dev);
568 }
569 spin_unlock_irqrestore(&tp->lock, flags);
570 }
571
572 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
573 {
574 struct rtl8169_private *tp = netdev_priv(dev);
575 void __iomem *ioaddr = tp->mmio_addr;
576 u8 options;
577
578 wol->wolopts = 0;
579
580 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
581 wol->supported = WAKE_ANY;
582
583 spin_lock_irq(&tp->lock);
584
585 options = RTL_R8(Config1);
586 if (!(options & PMEnable))
587 goto out_unlock;
588
589 options = RTL_R8(Config3);
590 if (options & LinkUp)
591 wol->wolopts |= WAKE_PHY;
592 if (options & MagicPacket)
593 wol->wolopts |= WAKE_MAGIC;
594
595 options = RTL_R8(Config5);
596 if (options & UWF)
597 wol->wolopts |= WAKE_UCAST;
598 if (options & BWF)
599 wol->wolopts |= WAKE_BCAST;
600 if (options & MWF)
601 wol->wolopts |= WAKE_MCAST;
602
603 out_unlock:
604 spin_unlock_irq(&tp->lock);
605 }
606
607 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
608 {
609 struct rtl8169_private *tp = netdev_priv(dev);
610 void __iomem *ioaddr = tp->mmio_addr;
611 unsigned int i;
612 static struct {
613 u32 opt;
614 u16 reg;
615 u8 mask;
616 } cfg[] = {
617 { WAKE_ANY, Config1, PMEnable },
618 { WAKE_PHY, Config3, LinkUp },
619 { WAKE_MAGIC, Config3, MagicPacket },
620 { WAKE_UCAST, Config5, UWF },
621 { WAKE_BCAST, Config5, BWF },
622 { WAKE_MCAST, Config5, MWF },
623 { WAKE_ANY, Config5, LanWake }
624 };
625
626 spin_lock_irq(&tp->lock);
627
628 RTL_W8(Cfg9346, Cfg9346_Unlock);
629
630 for (i = 0; i < ARRAY_SIZE(cfg); i++) {
631 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
632 if (wol->wolopts & cfg[i].opt)
633 options |= cfg[i].mask;
634 RTL_W8(cfg[i].reg, options);
635 }
636
637 RTL_W8(Cfg9346, Cfg9346_Lock);
638
639 if (wol->wolopts)
640 tp->features |= RTL_FEATURE_WOL;
641 else
642 tp->features &= ~RTL_FEATURE_WOL;
643
644 spin_unlock_irq(&tp->lock);
645
646 return 0;
647 }
648
649 static void rtl8169_get_drvinfo(struct net_device *dev,
650 struct ethtool_drvinfo *info)
651 {
652 struct rtl8169_private *tp = netdev_priv(dev);
653
654 strcpy(info->driver, MODULENAME);
655 strcpy(info->version, RTL8169_VERSION);
656 strcpy(info->bus_info, pci_name(tp->pci_dev));
657 }
658
659 static int rtl8169_get_regs_len(struct net_device *dev)
660 {
661 return R8169_REGS_SIZE;
662 }
663
664 static int rtl8169_set_speed_tbi(struct net_device *dev,
665 u8 autoneg, u16 speed, u8 duplex)
666 {
667 struct rtl8169_private *tp = netdev_priv(dev);
668 void __iomem *ioaddr = tp->mmio_addr;
669 int ret = 0;
670 u32 reg;
671
672 reg = RTL_R32(TBICSR);
673 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
674 (duplex == DUPLEX_FULL)) {
675 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
676 } else if (autoneg == AUTONEG_ENABLE)
677 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
678 else {
679 if (netif_msg_link(tp)) {
680 printk(KERN_WARNING "%s: "
681 "incorrect speed setting refused in TBI mode\n",
682 dev->name);
683 }
684 ret = -EOPNOTSUPP;
685 }
686
687 return ret;
688 }
689
690 static int rtl8169_set_speed_xmii(struct net_device *dev,
691 u8 autoneg, u16 speed, u8 duplex)
692 {
693 struct rtl8169_private *tp = netdev_priv(dev);
694 void __iomem *ioaddr = tp->mmio_addr;
695 int auto_nego, giga_ctrl;
696
697 auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
698 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
699 ADVERTISE_100HALF | ADVERTISE_100FULL);
700 giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
701 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
702
703 if (autoneg == AUTONEG_ENABLE) {
704 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
705 ADVERTISE_100HALF | ADVERTISE_100FULL);
706 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
707 } else {
708 if (speed == SPEED_10)
709 auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
710 else if (speed == SPEED_100)
711 auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
712 else if (speed == SPEED_1000)
713 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
714
715 if (duplex == DUPLEX_HALF)
716 auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
717
718 if (duplex == DUPLEX_FULL)
719 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
720
721 /* This tweak comes straight from Realtek's driver. */
722 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
723 ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
724 (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
725 auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
726 }
727 }
728
729 /* The 8100e/8101e do Fast Ethernet only. */
730 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
731 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
732 (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
733 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
734 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
735 netif_msg_link(tp)) {
736 printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
737 dev->name);
738 }
739 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
740 }
741
742 auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
743
744 if ((tp->mac_version == RTL_GIGA_MAC_VER_12) ||
745 (tp->mac_version == RTL_GIGA_MAC_VER_17)) {
746 /* Vendor specific (0x1f) and reserved (0x0e) MII registers. */
747 mdio_write(ioaddr, 0x1f, 0x0000);
748 mdio_write(ioaddr, 0x0e, 0x0000);
749 }
750
751 tp->phy_auto_nego_reg = auto_nego;
752 tp->phy_1000_ctrl_reg = giga_ctrl;
753
754 mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
755 mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
756 mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
757 return 0;
758 }
759
760 static int rtl8169_set_speed(struct net_device *dev,
761 u8 autoneg, u16 speed, u8 duplex)
762 {
763 struct rtl8169_private *tp = netdev_priv(dev);
764 int ret;
765
766 ret = tp->set_speed(dev, autoneg, speed, duplex);
767
768 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
769 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
770
771 return ret;
772 }
773
774 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
775 {
776 struct rtl8169_private *tp = netdev_priv(dev);
777 unsigned long flags;
778 int ret;
779
780 spin_lock_irqsave(&tp->lock, flags);
781 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
782 spin_unlock_irqrestore(&tp->lock, flags);
783
784 return ret;
785 }
786
787 static u32 rtl8169_get_rx_csum(struct net_device *dev)
788 {
789 struct rtl8169_private *tp = netdev_priv(dev);
790
791 return tp->cp_cmd & RxChkSum;
792 }
793
794 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
795 {
796 struct rtl8169_private *tp = netdev_priv(dev);
797 void __iomem *ioaddr = tp->mmio_addr;
798 unsigned long flags;
799
800 spin_lock_irqsave(&tp->lock, flags);
801
802 if (data)
803 tp->cp_cmd |= RxChkSum;
804 else
805 tp->cp_cmd &= ~RxChkSum;
806
807 RTL_W16(CPlusCmd, tp->cp_cmd);
808 RTL_R16(CPlusCmd);
809
810 spin_unlock_irqrestore(&tp->lock, flags);
811
812 return 0;
813 }
814
815 #ifdef CONFIG_R8169_VLAN
816
817 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
818 struct sk_buff *skb)
819 {
820 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
821 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
822 }
823
824 static void rtl8169_vlan_rx_register(struct net_device *dev,
825 struct vlan_group *grp)
826 {
827 struct rtl8169_private *tp = netdev_priv(dev);
828 void __iomem *ioaddr = tp->mmio_addr;
829 unsigned long flags;
830
831 spin_lock_irqsave(&tp->lock, flags);
832 tp->vlgrp = grp;
833 if (tp->vlgrp)
834 tp->cp_cmd |= RxVlan;
835 else
836 tp->cp_cmd &= ~RxVlan;
837 RTL_W16(CPlusCmd, tp->cp_cmd);
838 RTL_R16(CPlusCmd);
839 spin_unlock_irqrestore(&tp->lock, flags);
840 }
841
842 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
843 struct sk_buff *skb)
844 {
845 u32 opts2 = le32_to_cpu(desc->opts2);
846 int ret;
847
848 if (tp->vlgrp && (opts2 & RxVlanTag)) {
849 rtl8169_rx_hwaccel_skb(skb, tp->vlgrp, swab16(opts2 & 0xffff));
850 ret = 0;
851 } else
852 ret = -1;
853 desc->opts2 = 0;
854 return ret;
855 }
856
857 #else /* !CONFIG_R8169_VLAN */
858
859 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
860 struct sk_buff *skb)
861 {
862 return 0;
863 }
864
865 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
866 struct sk_buff *skb)
867 {
868 return -1;
869 }
870
871 #endif
872
873 static void rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
874 {
875 struct rtl8169_private *tp = netdev_priv(dev);
876 void __iomem *ioaddr = tp->mmio_addr;
877 u32 status;
878
879 cmd->supported =
880 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
881 cmd->port = PORT_FIBRE;
882 cmd->transceiver = XCVR_INTERNAL;
883
884 status = RTL_R32(TBICSR);
885 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
886 cmd->autoneg = !!(status & TBINwEnable);
887
888 cmd->speed = SPEED_1000;
889 cmd->duplex = DUPLEX_FULL; /* Always set */
890 }
891
892 static void rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
893 {
894 struct rtl8169_private *tp = netdev_priv(dev);
895 void __iomem *ioaddr = tp->mmio_addr;
896 u8 status;
897
898 cmd->supported = SUPPORTED_10baseT_Half |
899 SUPPORTED_10baseT_Full |
900 SUPPORTED_100baseT_Half |
901 SUPPORTED_100baseT_Full |
902 SUPPORTED_1000baseT_Full |
903 SUPPORTED_Autoneg |
904 SUPPORTED_TP;
905
906 cmd->autoneg = 1;
907 cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
908
909 if (tp->phy_auto_nego_reg & ADVERTISE_10HALF)
910 cmd->advertising |= ADVERTISED_10baseT_Half;
911 if (tp->phy_auto_nego_reg & ADVERTISE_10FULL)
912 cmd->advertising |= ADVERTISED_10baseT_Full;
913 if (tp->phy_auto_nego_reg & ADVERTISE_100HALF)
914 cmd->advertising |= ADVERTISED_100baseT_Half;
915 if (tp->phy_auto_nego_reg & ADVERTISE_100FULL)
916 cmd->advertising |= ADVERTISED_100baseT_Full;
917 if (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL)
918 cmd->advertising |= ADVERTISED_1000baseT_Full;
919
920 status = RTL_R8(PHYstatus);
921
922 if (status & _1000bpsF)
923 cmd->speed = SPEED_1000;
924 else if (status & _100bps)
925 cmd->speed = SPEED_100;
926 else if (status & _10bps)
927 cmd->speed = SPEED_10;
928
929 if (status & TxFlowCtrl)
930 cmd->advertising |= ADVERTISED_Asym_Pause;
931 if (status & RxFlowCtrl)
932 cmd->advertising |= ADVERTISED_Pause;
933
934 cmd->duplex = ((status & _1000bpsF) || (status & FullDup)) ?
935 DUPLEX_FULL : DUPLEX_HALF;
936 }
937
938 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
939 {
940 struct rtl8169_private *tp = netdev_priv(dev);
941 unsigned long flags;
942
943 spin_lock_irqsave(&tp->lock, flags);
944
945 tp->get_settings(dev, cmd);
946
947 spin_unlock_irqrestore(&tp->lock, flags);
948 return 0;
949 }
950
951 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
952 void *p)
953 {
954 struct rtl8169_private *tp = netdev_priv(dev);
955 unsigned long flags;
956
957 if (regs->len > R8169_REGS_SIZE)
958 regs->len = R8169_REGS_SIZE;
959
960 spin_lock_irqsave(&tp->lock, flags);
961 memcpy_fromio(p, tp->mmio_addr, regs->len);
962 spin_unlock_irqrestore(&tp->lock, flags);
963 }
964
965 static u32 rtl8169_get_msglevel(struct net_device *dev)
966 {
967 struct rtl8169_private *tp = netdev_priv(dev);
968
969 return tp->msg_enable;
970 }
971
972 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
973 {
974 struct rtl8169_private *tp = netdev_priv(dev);
975
976 tp->msg_enable = value;
977 }
978
979 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
980 "tx_packets",
981 "rx_packets",
982 "tx_errors",
983 "rx_errors",
984 "rx_missed",
985 "align_errors",
986 "tx_single_collisions",
987 "tx_multi_collisions",
988 "unicast",
989 "broadcast",
990 "multicast",
991 "tx_aborted",
992 "tx_underrun",
993 };
994
995 struct rtl8169_counters {
996 __le64 tx_packets;
997 __le64 rx_packets;
998 __le64 tx_errors;
999 __le32 rx_errors;
1000 __le16 rx_missed;
1001 __le16 align_errors;
1002 __le32 tx_one_collision;
1003 __le32 tx_multi_collision;
1004 __le64 rx_unicast;
1005 __le64 rx_broadcast;
1006 __le32 rx_multicast;
1007 __le16 tx_aborted;
1008 __le16 tx_underun;
1009 };
1010
1011 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1012 {
1013 switch (sset) {
1014 case ETH_SS_STATS:
1015 return ARRAY_SIZE(rtl8169_gstrings);
1016 default:
1017 return -EOPNOTSUPP;
1018 }
1019 }
1020
1021 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1022 struct ethtool_stats *stats, u64 *data)
1023 {
1024 struct rtl8169_private *tp = netdev_priv(dev);
1025 void __iomem *ioaddr = tp->mmio_addr;
1026 struct rtl8169_counters *counters;
1027 dma_addr_t paddr;
1028 u32 cmd;
1029
1030 ASSERT_RTNL();
1031
1032 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1033 if (!counters)
1034 return;
1035
1036 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1037 cmd = (u64)paddr & DMA_32BIT_MASK;
1038 RTL_W32(CounterAddrLow, cmd);
1039 RTL_W32(CounterAddrLow, cmd | CounterDump);
1040
1041 while (RTL_R32(CounterAddrLow) & CounterDump) {
1042 if (msleep_interruptible(1))
1043 break;
1044 }
1045
1046 RTL_W32(CounterAddrLow, 0);
1047 RTL_W32(CounterAddrHigh, 0);
1048
1049 data[0] = le64_to_cpu(counters->tx_packets);
1050 data[1] = le64_to_cpu(counters->rx_packets);
1051 data[2] = le64_to_cpu(counters->tx_errors);
1052 data[3] = le32_to_cpu(counters->rx_errors);
1053 data[4] = le16_to_cpu(counters->rx_missed);
1054 data[5] = le16_to_cpu(counters->align_errors);
1055 data[6] = le32_to_cpu(counters->tx_one_collision);
1056 data[7] = le32_to_cpu(counters->tx_multi_collision);
1057 data[8] = le64_to_cpu(counters->rx_unicast);
1058 data[9] = le64_to_cpu(counters->rx_broadcast);
1059 data[10] = le32_to_cpu(counters->rx_multicast);
1060 data[11] = le16_to_cpu(counters->tx_aborted);
1061 data[12] = le16_to_cpu(counters->tx_underun);
1062
1063 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1064 }
1065
1066 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1067 {
1068 switch(stringset) {
1069 case ETH_SS_STATS:
1070 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1071 break;
1072 }
1073 }
1074
1075 static const struct ethtool_ops rtl8169_ethtool_ops = {
1076 .get_drvinfo = rtl8169_get_drvinfo,
1077 .get_regs_len = rtl8169_get_regs_len,
1078 .get_link = ethtool_op_get_link,
1079 .get_settings = rtl8169_get_settings,
1080 .set_settings = rtl8169_set_settings,
1081 .get_msglevel = rtl8169_get_msglevel,
1082 .set_msglevel = rtl8169_set_msglevel,
1083 .get_rx_csum = rtl8169_get_rx_csum,
1084 .set_rx_csum = rtl8169_set_rx_csum,
1085 .set_tx_csum = ethtool_op_set_tx_csum,
1086 .set_sg = ethtool_op_set_sg,
1087 .set_tso = ethtool_op_set_tso,
1088 .get_regs = rtl8169_get_regs,
1089 .get_wol = rtl8169_get_wol,
1090 .set_wol = rtl8169_set_wol,
1091 .get_strings = rtl8169_get_strings,
1092 .get_sset_count = rtl8169_get_sset_count,
1093 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1094 };
1095
1096 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1097 int bitnum, int bitval)
1098 {
1099 int val;
1100
1101 val = mdio_read(ioaddr, reg);
1102 val = (bitval == 1) ?
1103 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1104 mdio_write(ioaddr, reg, val & 0xffff);
1105 }
1106
1107 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1108 void __iomem *ioaddr)
1109 {
1110 /*
1111 * The driver currently handles the 8168Bf and the 8168Be identically
1112 * but they can be identified more specifically through the test below
1113 * if needed:
1114 *
1115 * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1116 *
1117 * Same thing for the 8101Eb and the 8101Ec:
1118 *
1119 * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1120 */
1121 const struct {
1122 u32 mask;
1123 u32 val;
1124 int mac_version;
1125 } mac_info[] = {
1126 /* 8168B family. */
1127 { 0x7c800000, 0x3c800000, RTL_GIGA_MAC_VER_18 },
1128 { 0x7cf00000, 0x3c000000, RTL_GIGA_MAC_VER_19 },
1129 { 0x7cf00000, 0x3c200000, RTL_GIGA_MAC_VER_20 },
1130 { 0x7c800000, 0x3c000000, RTL_GIGA_MAC_VER_20 },
1131
1132 /* 8168B family. */
1133 { 0x7cf00000, 0x38000000, RTL_GIGA_MAC_VER_12 },
1134 { 0x7cf00000, 0x38500000, RTL_GIGA_MAC_VER_17 },
1135 { 0x7c800000, 0x38000000, RTL_GIGA_MAC_VER_17 },
1136 { 0x7c800000, 0x30000000, RTL_GIGA_MAC_VER_11 },
1137
1138 /* 8101 family. */
1139 { 0x7cf00000, 0x34000000, RTL_GIGA_MAC_VER_13 },
1140 { 0x7cf00000, 0x34200000, RTL_GIGA_MAC_VER_16 },
1141 { 0x7c800000, 0x34000000, RTL_GIGA_MAC_VER_16 },
1142 /* FIXME: where did these entries come from ? -- FR */
1143 { 0xfc800000, 0x38800000, RTL_GIGA_MAC_VER_15 },
1144 { 0xfc800000, 0x30800000, RTL_GIGA_MAC_VER_14 },
1145
1146 /* 8110 family. */
1147 { 0xfc800000, 0x98000000, RTL_GIGA_MAC_VER_06 },
1148 { 0xfc800000, 0x18000000, RTL_GIGA_MAC_VER_05 },
1149 { 0xfc800000, 0x10000000, RTL_GIGA_MAC_VER_04 },
1150 { 0xfc800000, 0x04000000, RTL_GIGA_MAC_VER_03 },
1151 { 0xfc800000, 0x00800000, RTL_GIGA_MAC_VER_02 },
1152 { 0xfc800000, 0x00000000, RTL_GIGA_MAC_VER_01 },
1153
1154 { 0x00000000, 0x00000000, RTL_GIGA_MAC_VER_01 } /* Catch-all */
1155 }, *p = mac_info;
1156 u32 reg;
1157
1158 reg = RTL_R32(TxConfig);
1159 while ((reg & p->mask) != p->val)
1160 p++;
1161 tp->mac_version = p->mac_version;
1162
1163 if (p->mask == 0x00000000) {
1164 struct pci_dev *pdev = tp->pci_dev;
1165
1166 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1167 }
1168 }
1169
1170 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1171 {
1172 dprintk("mac_version = 0x%02x\n", tp->mac_version);
1173 }
1174
1175 struct phy_reg {
1176 u16 reg;
1177 u16 val;
1178 };
1179
1180 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1181 {
1182 while (len-- > 0) {
1183 mdio_write(ioaddr, regs->reg, regs->val);
1184 regs++;
1185 }
1186 }
1187
1188 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1189 {
1190 struct {
1191 u16 regs[5]; /* Beware of bit-sign propagation */
1192 } phy_magic[5] = { {
1193 { 0x0000, //w 4 15 12 0
1194 0x00a1, //w 3 15 0 00a1
1195 0x0008, //w 2 15 0 0008
1196 0x1020, //w 1 15 0 1020
1197 0x1000 } },{ //w 0 15 0 1000
1198 { 0x7000, //w 4 15 12 7
1199 0xff41, //w 3 15 0 ff41
1200 0xde60, //w 2 15 0 de60
1201 0x0140, //w 1 15 0 0140
1202 0x0077 } },{ //w 0 15 0 0077
1203 { 0xa000, //w 4 15 12 a
1204 0xdf01, //w 3 15 0 df01
1205 0xdf20, //w 2 15 0 df20
1206 0xff95, //w 1 15 0 ff95
1207 0xfa00 } },{ //w 0 15 0 fa00
1208 { 0xb000, //w 4 15 12 b
1209 0xff41, //w 3 15 0 ff41
1210 0xde20, //w 2 15 0 de20
1211 0x0140, //w 1 15 0 0140
1212 0x00bb } },{ //w 0 15 0 00bb
1213 { 0xf000, //w 4 15 12 f
1214 0xdf01, //w 3 15 0 df01
1215 0xdf20, //w 2 15 0 df20
1216 0xff95, //w 1 15 0 ff95
1217 0xbf00 } //w 0 15 0 bf00
1218 }
1219 }, *p = phy_magic;
1220 unsigned int i;
1221
1222 mdio_write(ioaddr, 0x1f, 0x0001); //w 31 2 0 1
1223 mdio_write(ioaddr, 0x15, 0x1000); //w 21 15 0 1000
1224 mdio_write(ioaddr, 0x18, 0x65c7); //w 24 15 0 65c7
1225 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1226
1227 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1228 int val, pos = 4;
1229
1230 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1231 mdio_write(ioaddr, pos, val);
1232 while (--pos >= 0)
1233 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1234 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1235 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1236 }
1237 mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1238 }
1239
1240 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1241 {
1242 struct phy_reg phy_reg_init[] = {
1243 { 0x1f, 0x0002 },
1244 { 0x01, 0x90d0 },
1245 { 0x1f, 0x0000 }
1246 };
1247
1248 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1249 }
1250
1251 static void rtl8168cp_hw_phy_config(void __iomem *ioaddr)
1252 {
1253 struct phy_reg phy_reg_init[] = {
1254 { 0x1f, 0x0000 },
1255 { 0x1d, 0x0f00 },
1256 { 0x1f, 0x0002 },
1257 { 0x0c, 0x1ec8 },
1258 { 0x1f, 0x0000 }
1259 };
1260
1261 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1262 }
1263
1264 static void rtl8168c_hw_phy_config(void __iomem *ioaddr)
1265 {
1266 struct phy_reg phy_reg_init[] = {
1267 { 0x1f, 0x0001 },
1268 { 0x12, 0x2300 },
1269 { 0x1f, 0x0002 },
1270 { 0x00, 0x88d4 },
1271 { 0x01, 0x82b1 },
1272 { 0x03, 0x7002 },
1273 { 0x08, 0x9e30 },
1274 { 0x09, 0x01f0 },
1275 { 0x0a, 0x5500 },
1276 { 0x0c, 0x00c8 },
1277 { 0x1f, 0x0003 },
1278 { 0x12, 0xc096 },
1279 { 0x16, 0x000a },
1280 { 0x1f, 0x0000 }
1281 };
1282
1283 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1284 }
1285
1286 static void rtl8168cx_hw_phy_config(void __iomem *ioaddr)
1287 {
1288 struct phy_reg phy_reg_init[] = {
1289 { 0x1f, 0x0000 },
1290 { 0x12, 0x2300 },
1291 { 0x1f, 0x0003 },
1292 { 0x16, 0x0f0a },
1293 { 0x1f, 0x0000 },
1294 { 0x1f, 0x0002 },
1295 { 0x0c, 0x7eb8 },
1296 { 0x1f, 0x0000 }
1297 };
1298
1299 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1300 }
1301
1302 static void rtl_hw_phy_config(struct net_device *dev)
1303 {
1304 struct rtl8169_private *tp = netdev_priv(dev);
1305 void __iomem *ioaddr = tp->mmio_addr;
1306
1307 rtl8169_print_mac_version(tp);
1308
1309 switch (tp->mac_version) {
1310 case RTL_GIGA_MAC_VER_01:
1311 break;
1312 case RTL_GIGA_MAC_VER_02:
1313 case RTL_GIGA_MAC_VER_03:
1314 rtl8169s_hw_phy_config(ioaddr);
1315 break;
1316 case RTL_GIGA_MAC_VER_04:
1317 rtl8169sb_hw_phy_config(ioaddr);
1318 break;
1319 case RTL_GIGA_MAC_VER_18:
1320 rtl8168cp_hw_phy_config(ioaddr);
1321 break;
1322 case RTL_GIGA_MAC_VER_19:
1323 rtl8168c_hw_phy_config(ioaddr);
1324 break;
1325 case RTL_GIGA_MAC_VER_20:
1326 rtl8168cx_hw_phy_config(ioaddr);
1327 break;
1328 default:
1329 break;
1330 }
1331 }
1332
1333 static void rtl8169_phy_timer(unsigned long __opaque)
1334 {
1335 struct net_device *dev = (struct net_device *)__opaque;
1336 struct rtl8169_private *tp = netdev_priv(dev);
1337 struct timer_list *timer = &tp->timer;
1338 void __iomem *ioaddr = tp->mmio_addr;
1339 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1340
1341 assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1342
1343 if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1344 return;
1345
1346 spin_lock_irq(&tp->lock);
1347
1348 if (tp->phy_reset_pending(ioaddr)) {
1349 /*
1350 * A busy loop could burn quite a few cycles on nowadays CPU.
1351 * Let's delay the execution of the timer for a few ticks.
1352 */
1353 timeout = HZ/10;
1354 goto out_mod_timer;
1355 }
1356
1357 if (tp->link_ok(ioaddr))
1358 goto out_unlock;
1359
1360 if (netif_msg_link(tp))
1361 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1362
1363 tp->phy_reset_enable(ioaddr);
1364
1365 out_mod_timer:
1366 mod_timer(timer, jiffies + timeout);
1367 out_unlock:
1368 spin_unlock_irq(&tp->lock);
1369 }
1370
1371 static inline void rtl8169_delete_timer(struct net_device *dev)
1372 {
1373 struct rtl8169_private *tp = netdev_priv(dev);
1374 struct timer_list *timer = &tp->timer;
1375
1376 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1377 return;
1378
1379 del_timer_sync(timer);
1380 }
1381
1382 static inline void rtl8169_request_timer(struct net_device *dev)
1383 {
1384 struct rtl8169_private *tp = netdev_priv(dev);
1385 struct timer_list *timer = &tp->timer;
1386
1387 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1388 return;
1389
1390 mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1391 }
1392
1393 #ifdef CONFIG_NET_POLL_CONTROLLER
1394 /*
1395 * Polling 'interrupt' - used by things like netconsole to send skbs
1396 * without having to re-enable interrupts. It's not called while
1397 * the interrupt routine is executing.
1398 */
1399 static void rtl8169_netpoll(struct net_device *dev)
1400 {
1401 struct rtl8169_private *tp = netdev_priv(dev);
1402 struct pci_dev *pdev = tp->pci_dev;
1403
1404 disable_irq(pdev->irq);
1405 rtl8169_interrupt(pdev->irq, dev);
1406 enable_irq(pdev->irq);
1407 }
1408 #endif
1409
1410 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1411 void __iomem *ioaddr)
1412 {
1413 iounmap(ioaddr);
1414 pci_release_regions(pdev);
1415 pci_disable_device(pdev);
1416 free_netdev(dev);
1417 }
1418
1419 static void rtl8169_phy_reset(struct net_device *dev,
1420 struct rtl8169_private *tp)
1421 {
1422 void __iomem *ioaddr = tp->mmio_addr;
1423 unsigned int i;
1424
1425 tp->phy_reset_enable(ioaddr);
1426 for (i = 0; i < 100; i++) {
1427 if (!tp->phy_reset_pending(ioaddr))
1428 return;
1429 msleep(1);
1430 }
1431 if (netif_msg_link(tp))
1432 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1433 }
1434
1435 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1436 {
1437 void __iomem *ioaddr = tp->mmio_addr;
1438
1439 rtl_hw_phy_config(dev);
1440
1441 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1442 RTL_W8(0x82, 0x01);
1443
1444 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1445
1446 if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1447 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1448
1449 if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1450 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1451 RTL_W8(0x82, 0x01);
1452 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1453 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1454 }
1455
1456 rtl8169_phy_reset(dev, tp);
1457
1458 /*
1459 * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1460 * only 8101. Don't panic.
1461 */
1462 rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1463
1464 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1465 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1466 }
1467
1468 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1469 {
1470 void __iomem *ioaddr = tp->mmio_addr;
1471 u32 high;
1472 u32 low;
1473
1474 low = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1475 high = addr[4] | (addr[5] << 8);
1476
1477 spin_lock_irq(&tp->lock);
1478
1479 RTL_W8(Cfg9346, Cfg9346_Unlock);
1480 RTL_W32(MAC0, low);
1481 RTL_W32(MAC4, high);
1482 RTL_W8(Cfg9346, Cfg9346_Lock);
1483
1484 spin_unlock_irq(&tp->lock);
1485 }
1486
1487 static int rtl_set_mac_address(struct net_device *dev, void *p)
1488 {
1489 struct rtl8169_private *tp = netdev_priv(dev);
1490 struct sockaddr *addr = p;
1491
1492 if (!is_valid_ether_addr(addr->sa_data))
1493 return -EADDRNOTAVAIL;
1494
1495 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1496
1497 rtl_rar_set(tp, dev->dev_addr);
1498
1499 return 0;
1500 }
1501
1502 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1503 {
1504 struct rtl8169_private *tp = netdev_priv(dev);
1505 struct mii_ioctl_data *data = if_mii(ifr);
1506
1507 if (!netif_running(dev))
1508 return -ENODEV;
1509
1510 switch (cmd) {
1511 case SIOCGMIIPHY:
1512 data->phy_id = 32; /* Internal PHY */
1513 return 0;
1514
1515 case SIOCGMIIREG:
1516 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1517 return 0;
1518
1519 case SIOCSMIIREG:
1520 if (!capable(CAP_NET_ADMIN))
1521 return -EPERM;
1522 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1523 return 0;
1524 }
1525 return -EOPNOTSUPP;
1526 }
1527
1528 static const struct rtl_cfg_info {
1529 void (*hw_start)(struct net_device *);
1530 unsigned int region;
1531 unsigned int align;
1532 u16 intr_event;
1533 u16 napi_event;
1534 unsigned msi;
1535 } rtl_cfg_infos [] = {
1536 [RTL_CFG_0] = {
1537 .hw_start = rtl_hw_start_8169,
1538 .region = 1,
1539 .align = 0,
1540 .intr_event = SYSErr | LinkChg | RxOverflow |
1541 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1542 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1543 .msi = 0
1544 },
1545 [RTL_CFG_1] = {
1546 .hw_start = rtl_hw_start_8168,
1547 .region = 2,
1548 .align = 8,
1549 .intr_event = SYSErr | LinkChg | RxOverflow |
1550 TxErr | TxOK | RxOK | RxErr,
1551 .napi_event = TxErr | TxOK | RxOK | RxOverflow,
1552 .msi = RTL_FEATURE_MSI
1553 },
1554 [RTL_CFG_2] = {
1555 .hw_start = rtl_hw_start_8101,
1556 .region = 2,
1557 .align = 8,
1558 .intr_event = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1559 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1560 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1561 .msi = RTL_FEATURE_MSI
1562 }
1563 };
1564
1565 /* Cfg9346_Unlock assumed. */
1566 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1567 const struct rtl_cfg_info *cfg)
1568 {
1569 unsigned msi = 0;
1570 u8 cfg2;
1571
1572 cfg2 = RTL_R8(Config2) & ~MSIEnable;
1573 if (cfg->msi) {
1574 if (pci_enable_msi(pdev)) {
1575 dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1576 } else {
1577 cfg2 |= MSIEnable;
1578 msi = RTL_FEATURE_MSI;
1579 }
1580 }
1581 RTL_W8(Config2, cfg2);
1582 return msi;
1583 }
1584
1585 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1586 {
1587 if (tp->features & RTL_FEATURE_MSI) {
1588 pci_disable_msi(pdev);
1589 tp->features &= ~RTL_FEATURE_MSI;
1590 }
1591 }
1592
1593 static int __devinit
1594 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1595 {
1596 const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1597 const unsigned int region = cfg->region;
1598 struct rtl8169_private *tp;
1599 struct net_device *dev;
1600 void __iomem *ioaddr;
1601 unsigned int i;
1602 int rc;
1603
1604 if (netif_msg_drv(&debug)) {
1605 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1606 MODULENAME, RTL8169_VERSION);
1607 }
1608
1609 dev = alloc_etherdev(sizeof (*tp));
1610 if (!dev) {
1611 if (netif_msg_drv(&debug))
1612 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1613 rc = -ENOMEM;
1614 goto out;
1615 }
1616
1617 SET_NETDEV_DEV(dev, &pdev->dev);
1618 tp = netdev_priv(dev);
1619 tp->dev = dev;
1620 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1621
1622 /* enable device (incl. PCI PM wakeup and hotplug setup) */
1623 rc = pci_enable_device(pdev);
1624 if (rc < 0) {
1625 if (netif_msg_probe(tp))
1626 dev_err(&pdev->dev, "enable failure\n");
1627 goto err_out_free_dev_1;
1628 }
1629
1630 rc = pci_set_mwi(pdev);
1631 if (rc < 0)
1632 goto err_out_disable_2;
1633
1634 /* make sure PCI base addr 1 is MMIO */
1635 if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1636 if (netif_msg_probe(tp)) {
1637 dev_err(&pdev->dev,
1638 "region #%d not an MMIO resource, aborting\n",
1639 region);
1640 }
1641 rc = -ENODEV;
1642 goto err_out_mwi_3;
1643 }
1644
1645 /* check for weird/broken PCI region reporting */
1646 if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1647 if (netif_msg_probe(tp)) {
1648 dev_err(&pdev->dev,
1649 "Invalid PCI region size(s), aborting\n");
1650 }
1651 rc = -ENODEV;
1652 goto err_out_mwi_3;
1653 }
1654
1655 rc = pci_request_regions(pdev, MODULENAME);
1656 if (rc < 0) {
1657 if (netif_msg_probe(tp))
1658 dev_err(&pdev->dev, "could not request regions.\n");
1659 goto err_out_mwi_3;
1660 }
1661
1662 tp->cp_cmd = PCIMulRW | RxChkSum;
1663
1664 if ((sizeof(dma_addr_t) > 4) &&
1665 !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1666 tp->cp_cmd |= PCIDAC;
1667 dev->features |= NETIF_F_HIGHDMA;
1668 } else {
1669 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1670 if (rc < 0) {
1671 if (netif_msg_probe(tp)) {
1672 dev_err(&pdev->dev,
1673 "DMA configuration failed.\n");
1674 }
1675 goto err_out_free_res_4;
1676 }
1677 }
1678
1679 pci_set_master(pdev);
1680
1681 /* ioremap MMIO region */
1682 ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1683 if (!ioaddr) {
1684 if (netif_msg_probe(tp))
1685 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1686 rc = -EIO;
1687 goto err_out_free_res_4;
1688 }
1689
1690 /* Unneeded ? Don't mess with Mrs. Murphy. */
1691 rtl8169_irq_mask_and_ack(ioaddr);
1692
1693 /* Soft reset the chip. */
1694 RTL_W8(ChipCmd, CmdReset);
1695
1696 /* Check that the chip has finished the reset. */
1697 for (i = 0; i < 100; i++) {
1698 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1699 break;
1700 msleep_interruptible(1);
1701 }
1702
1703 /* Identify chip attached to board */
1704 rtl8169_get_mac_version(tp, ioaddr);
1705
1706 rtl8169_print_mac_version(tp);
1707
1708 for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--) {
1709 if (tp->mac_version == rtl_chip_info[i].mac_version)
1710 break;
1711 }
1712 if (i < 0) {
1713 /* Unknown chip: assume array element #0, original RTL-8169 */
1714 if (netif_msg_probe(tp)) {
1715 dev_printk(KERN_DEBUG, &pdev->dev,
1716 "unknown chip version, assuming %s\n",
1717 rtl_chip_info[0].name);
1718 }
1719 i++;
1720 }
1721 tp->chipset = i;
1722
1723 RTL_W8(Cfg9346, Cfg9346_Unlock);
1724 RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1725 RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1726 tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
1727 RTL_W8(Cfg9346, Cfg9346_Lock);
1728
1729 if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
1730 (RTL_R8(PHYstatus) & TBI_Enable)) {
1731 tp->set_speed = rtl8169_set_speed_tbi;
1732 tp->get_settings = rtl8169_gset_tbi;
1733 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1734 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1735 tp->link_ok = rtl8169_tbi_link_ok;
1736
1737 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1738 } else {
1739 tp->set_speed = rtl8169_set_speed_xmii;
1740 tp->get_settings = rtl8169_gset_xmii;
1741 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1742 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1743 tp->link_ok = rtl8169_xmii_link_ok;
1744
1745 dev->do_ioctl = rtl8169_ioctl;
1746 }
1747
1748 /* Get MAC address. FIXME: read EEPROM */
1749 for (i = 0; i < MAC_ADDR_LEN; i++)
1750 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1751 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1752
1753 dev->open = rtl8169_open;
1754 dev->hard_start_xmit = rtl8169_start_xmit;
1755 dev->get_stats = rtl8169_get_stats;
1756 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1757 dev->stop = rtl8169_close;
1758 dev->tx_timeout = rtl8169_tx_timeout;
1759 dev->set_multicast_list = rtl_set_rx_mode;
1760 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1761 dev->irq = pdev->irq;
1762 dev->base_addr = (unsigned long) ioaddr;
1763 dev->change_mtu = rtl8169_change_mtu;
1764 dev->set_mac_address = rtl_set_mac_address;
1765
1766 #ifdef CONFIG_R8169_NAPI
1767 netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
1768 #endif
1769
1770 #ifdef CONFIG_R8169_VLAN
1771 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1772 dev->vlan_rx_register = rtl8169_vlan_rx_register;
1773 #endif
1774
1775 #ifdef CONFIG_NET_POLL_CONTROLLER
1776 dev->poll_controller = rtl8169_netpoll;
1777 #endif
1778
1779 tp->intr_mask = 0xffff;
1780 tp->pci_dev = pdev;
1781 tp->mmio_addr = ioaddr;
1782 tp->align = cfg->align;
1783 tp->hw_start = cfg->hw_start;
1784 tp->intr_event = cfg->intr_event;
1785 tp->napi_event = cfg->napi_event;
1786
1787 init_timer(&tp->timer);
1788 tp->timer.data = (unsigned long) dev;
1789 tp->timer.function = rtl8169_phy_timer;
1790
1791 spin_lock_init(&tp->lock);
1792
1793 rc = register_netdev(dev);
1794 if (rc < 0)
1795 goto err_out_msi_5;
1796
1797 pci_set_drvdata(pdev, dev);
1798
1799 if (netif_msg_probe(tp)) {
1800 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
1801
1802 printk(KERN_INFO "%s: %s at 0x%lx, "
1803 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1804 "XID %08x IRQ %d\n",
1805 dev->name,
1806 rtl_chip_info[tp->chipset].name,
1807 dev->base_addr,
1808 dev->dev_addr[0], dev->dev_addr[1],
1809 dev->dev_addr[2], dev->dev_addr[3],
1810 dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
1811 }
1812
1813 rtl8169_init_phy(dev, tp);
1814
1815 out:
1816 return rc;
1817
1818 err_out_msi_5:
1819 rtl_disable_msi(pdev, tp);
1820 iounmap(ioaddr);
1821 err_out_free_res_4:
1822 pci_release_regions(pdev);
1823 err_out_mwi_3:
1824 pci_clear_mwi(pdev);
1825 err_out_disable_2:
1826 pci_disable_device(pdev);
1827 err_out_free_dev_1:
1828 free_netdev(dev);
1829 goto out;
1830 }
1831
1832 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
1833 {
1834 struct net_device *dev = pci_get_drvdata(pdev);
1835 struct rtl8169_private *tp = netdev_priv(dev);
1836
1837 flush_scheduled_work();
1838
1839 unregister_netdev(dev);
1840 rtl_disable_msi(pdev, tp);
1841 rtl8169_release_board(pdev, dev, tp->mmio_addr);
1842 pci_set_drvdata(pdev, NULL);
1843 }
1844
1845 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
1846 struct net_device *dev)
1847 {
1848 unsigned int mtu = dev->mtu;
1849
1850 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1851 }
1852
1853 static int rtl8169_open(struct net_device *dev)
1854 {
1855 struct rtl8169_private *tp = netdev_priv(dev);
1856 struct pci_dev *pdev = tp->pci_dev;
1857 int retval = -ENOMEM;
1858
1859
1860 rtl8169_set_rxbufsize(tp, dev);
1861
1862 /*
1863 * Rx and Tx desscriptors needs 256 bytes alignment.
1864 * pci_alloc_consistent provides more.
1865 */
1866 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
1867 &tp->TxPhyAddr);
1868 if (!tp->TxDescArray)
1869 goto out;
1870
1871 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
1872 &tp->RxPhyAddr);
1873 if (!tp->RxDescArray)
1874 goto err_free_tx_0;
1875
1876 retval = rtl8169_init_ring(dev);
1877 if (retval < 0)
1878 goto err_free_rx_1;
1879
1880 INIT_DELAYED_WORK(&tp->task, NULL);
1881
1882 smp_mb();
1883
1884 retval = request_irq(dev->irq, rtl8169_interrupt,
1885 (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
1886 dev->name, dev);
1887 if (retval < 0)
1888 goto err_release_ring_2;
1889
1890 #ifdef CONFIG_R8169_NAPI
1891 napi_enable(&tp->napi);
1892 #endif
1893
1894 rtl_hw_start(dev);
1895
1896 rtl8169_request_timer(dev);
1897
1898 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
1899 out:
1900 return retval;
1901
1902 err_release_ring_2:
1903 rtl8169_rx_clear(tp);
1904 err_free_rx_1:
1905 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
1906 tp->RxPhyAddr);
1907 err_free_tx_0:
1908 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
1909 tp->TxPhyAddr);
1910 goto out;
1911 }
1912
1913 static void rtl8169_hw_reset(void __iomem *ioaddr)
1914 {
1915 /* Disable interrupts */
1916 rtl8169_irq_mask_and_ack(ioaddr);
1917
1918 /* Reset the chipset */
1919 RTL_W8(ChipCmd, CmdReset);
1920
1921 /* PCI commit */
1922 RTL_R8(ChipCmd);
1923 }
1924
1925 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
1926 {
1927 void __iomem *ioaddr = tp->mmio_addr;
1928 u32 cfg = rtl8169_rx_config;
1929
1930 cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1931 RTL_W32(RxConfig, cfg);
1932
1933 /* Set DMA burst size and Interframe Gap Time */
1934 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
1935 (InterFrameGap << TxInterFrameGapShift));
1936 }
1937
1938 static void rtl_hw_start(struct net_device *dev)
1939 {
1940 struct rtl8169_private *tp = netdev_priv(dev);
1941 void __iomem *ioaddr = tp->mmio_addr;
1942 unsigned int i;
1943
1944 /* Soft reset the chip. */
1945 RTL_W8(ChipCmd, CmdReset);
1946
1947 /* Check that the chip has finished the reset. */
1948 for (i = 0; i < 100; i++) {
1949 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1950 break;
1951 msleep_interruptible(1);
1952 }
1953
1954 tp->hw_start(dev);
1955
1956 netif_start_queue(dev);
1957 }
1958
1959
1960 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
1961 void __iomem *ioaddr)
1962 {
1963 /*
1964 * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
1965 * register to be written before TxDescAddrLow to work.
1966 * Switching from MMIO to I/O access fixes the issue as well.
1967 */
1968 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
1969 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
1970 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
1971 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
1972 }
1973
1974 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
1975 {
1976 u16 cmd;
1977
1978 cmd = RTL_R16(CPlusCmd);
1979 RTL_W16(CPlusCmd, cmd);
1980 return cmd;
1981 }
1982
1983 static void rtl_set_rx_max_size(void __iomem *ioaddr)
1984 {
1985 /* Low hurts. Let's disable the filtering. */
1986 RTL_W16(RxMaxSize, 16383);
1987 }
1988
1989 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
1990 {
1991 struct {
1992 u32 mac_version;
1993 u32 clk;
1994 u32 val;
1995 } cfg2_info [] = {
1996 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
1997 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
1998 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
1999 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2000 }, *p = cfg2_info;
2001 unsigned int i;
2002 u32 clk;
2003
2004 clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2005 for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2006 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2007 RTL_W32(0x7c, p->val);
2008 break;
2009 }
2010 }
2011 }
2012
2013 static void rtl_hw_start_8169(struct net_device *dev)
2014 {
2015 struct rtl8169_private *tp = netdev_priv(dev);
2016 void __iomem *ioaddr = tp->mmio_addr;
2017 struct pci_dev *pdev = tp->pci_dev;
2018
2019 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2020 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2021 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2022 }
2023
2024 RTL_W8(Cfg9346, Cfg9346_Unlock);
2025 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2026 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2027 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2028 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2029 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2030
2031 RTL_W8(EarlyTxThres, EarlyTxThld);
2032
2033 rtl_set_rx_max_size(ioaddr);
2034
2035 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2036 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2037 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2038 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2039 rtl_set_rx_tx_config_registers(tp);
2040
2041 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2042
2043 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2044 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2045 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2046 "Bit-3 and bit-14 MUST be 1\n");
2047 tp->cp_cmd |= (1 << 14);
2048 }
2049
2050 RTL_W16(CPlusCmd, tp->cp_cmd);
2051
2052 rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2053
2054 /*
2055 * Undocumented corner. Supposedly:
2056 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2057 */
2058 RTL_W16(IntrMitigate, 0x0000);
2059
2060 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2061
2062 if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2063 (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2064 (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2065 (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2066 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2067 rtl_set_rx_tx_config_registers(tp);
2068 }
2069
2070 RTL_W8(Cfg9346, Cfg9346_Lock);
2071
2072 /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2073 RTL_R8(IntrMask);
2074
2075 RTL_W32(RxMissed, 0);
2076
2077 rtl_set_rx_mode(dev);
2078
2079 /* no early-rx interrupts */
2080 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2081
2082 /* Enable all known interrupts by setting the interrupt mask. */
2083 RTL_W16(IntrMask, tp->intr_event);
2084 }
2085
2086 static void rtl_hw_start_8168(struct net_device *dev)
2087 {
2088 struct rtl8169_private *tp = netdev_priv(dev);
2089 void __iomem *ioaddr = tp->mmio_addr;
2090 struct pci_dev *pdev = tp->pci_dev;
2091 u8 ctl;
2092
2093 RTL_W8(Cfg9346, Cfg9346_Unlock);
2094
2095 RTL_W8(EarlyTxThres, EarlyTxThld);
2096
2097 rtl_set_rx_max_size(ioaddr);
2098
2099 rtl_set_rx_tx_config_registers(tp);
2100
2101 tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2102
2103 RTL_W16(CPlusCmd, tp->cp_cmd);
2104
2105 /* Tx performance tweak. */
2106 pci_read_config_byte(pdev, 0x69, &ctl);
2107 ctl = (ctl & ~0x70) | 0x50;
2108 pci_write_config_byte(pdev, 0x69, ctl);
2109
2110 RTL_W16(IntrMitigate, 0x5151);
2111
2112 /* Work around for RxFIFO overflow. */
2113 if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2114 tp->intr_event |= RxFIFOOver | PCSTimeout;
2115 tp->intr_event &= ~RxOverflow;
2116 }
2117
2118 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2119
2120 RTL_W8(Cfg9346, Cfg9346_Lock);
2121
2122 RTL_R8(IntrMask);
2123
2124 RTL_W32(RxMissed, 0);
2125
2126 rtl_set_rx_mode(dev);
2127
2128 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2129
2130 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2131
2132 RTL_W16(IntrMask, tp->intr_event);
2133 }
2134
2135 static void rtl_hw_start_8101(struct net_device *dev)
2136 {
2137 struct rtl8169_private *tp = netdev_priv(dev);
2138 void __iomem *ioaddr = tp->mmio_addr;
2139 struct pci_dev *pdev = tp->pci_dev;
2140
2141 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2142 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2143 pci_write_config_word(pdev, 0x68, 0x00);
2144 pci_write_config_word(pdev, 0x69, 0x08);
2145 }
2146
2147 RTL_W8(Cfg9346, Cfg9346_Unlock);
2148
2149 RTL_W8(EarlyTxThres, EarlyTxThld);
2150
2151 rtl_set_rx_max_size(ioaddr);
2152
2153 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2154
2155 RTL_W16(CPlusCmd, tp->cp_cmd);
2156
2157 RTL_W16(IntrMitigate, 0x0000);
2158
2159 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2160
2161 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2162 rtl_set_rx_tx_config_registers(tp);
2163
2164 RTL_W8(Cfg9346, Cfg9346_Lock);
2165
2166 RTL_R8(IntrMask);
2167
2168 RTL_W32(RxMissed, 0);
2169
2170 rtl_set_rx_mode(dev);
2171
2172 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2173
2174 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2175
2176 RTL_W16(IntrMask, tp->intr_event);
2177 }
2178
2179 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2180 {
2181 struct rtl8169_private *tp = netdev_priv(dev);
2182 int ret = 0;
2183
2184 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2185 return -EINVAL;
2186
2187 dev->mtu = new_mtu;
2188
2189 if (!netif_running(dev))
2190 goto out;
2191
2192 rtl8169_down(dev);
2193
2194 rtl8169_set_rxbufsize(tp, dev);
2195
2196 ret = rtl8169_init_ring(dev);
2197 if (ret < 0)
2198 goto out;
2199
2200 #ifdef CONFIG_R8169_NAPI
2201 napi_enable(&tp->napi);
2202 #endif
2203
2204 rtl_hw_start(dev);
2205
2206 rtl8169_request_timer(dev);
2207
2208 out:
2209 return ret;
2210 }
2211
2212 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2213 {
2214 desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2215 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2216 }
2217
2218 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2219 struct sk_buff **sk_buff, struct RxDesc *desc)
2220 {
2221 struct pci_dev *pdev = tp->pci_dev;
2222
2223 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2224 PCI_DMA_FROMDEVICE);
2225 dev_kfree_skb(*sk_buff);
2226 *sk_buff = NULL;
2227 rtl8169_make_unusable_by_asic(desc);
2228 }
2229
2230 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2231 {
2232 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2233
2234 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2235 }
2236
2237 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2238 u32 rx_buf_sz)
2239 {
2240 desc->addr = cpu_to_le64(mapping);
2241 wmb();
2242 rtl8169_mark_to_asic(desc, rx_buf_sz);
2243 }
2244
2245 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2246 struct net_device *dev,
2247 struct RxDesc *desc, int rx_buf_sz,
2248 unsigned int align)
2249 {
2250 struct sk_buff *skb;
2251 dma_addr_t mapping;
2252 unsigned int pad;
2253
2254 pad = align ? align : NET_IP_ALIGN;
2255
2256 skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2257 if (!skb)
2258 goto err_out;
2259
2260 skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2261
2262 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2263 PCI_DMA_FROMDEVICE);
2264
2265 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2266 out:
2267 return skb;
2268
2269 err_out:
2270 rtl8169_make_unusable_by_asic(desc);
2271 goto out;
2272 }
2273
2274 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2275 {
2276 unsigned int i;
2277
2278 for (i = 0; i < NUM_RX_DESC; i++) {
2279 if (tp->Rx_skbuff[i]) {
2280 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2281 tp->RxDescArray + i);
2282 }
2283 }
2284 }
2285
2286 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2287 u32 start, u32 end)
2288 {
2289 u32 cur;
2290
2291 for (cur = start; end - cur != 0; cur++) {
2292 struct sk_buff *skb;
2293 unsigned int i = cur % NUM_RX_DESC;
2294
2295 WARN_ON((s32)(end - cur) < 0);
2296
2297 if (tp->Rx_skbuff[i])
2298 continue;
2299
2300 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2301 tp->RxDescArray + i,
2302 tp->rx_buf_sz, tp->align);
2303 if (!skb)
2304 break;
2305
2306 tp->Rx_skbuff[i] = skb;
2307 }
2308 return cur - start;
2309 }
2310
2311 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2312 {
2313 desc->opts1 |= cpu_to_le32(RingEnd);
2314 }
2315
2316 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2317 {
2318 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2319 }
2320
2321 static int rtl8169_init_ring(struct net_device *dev)
2322 {
2323 struct rtl8169_private *tp = netdev_priv(dev);
2324
2325 rtl8169_init_ring_indexes(tp);
2326
2327 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2328 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2329
2330 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2331 goto err_out;
2332
2333 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2334
2335 return 0;
2336
2337 err_out:
2338 rtl8169_rx_clear(tp);
2339 return -ENOMEM;
2340 }
2341
2342 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2343 struct TxDesc *desc)
2344 {
2345 unsigned int len = tx_skb->len;
2346
2347 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2348 desc->opts1 = 0x00;
2349 desc->opts2 = 0x00;
2350 desc->addr = 0x00;
2351 tx_skb->len = 0;
2352 }
2353
2354 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2355 {
2356 unsigned int i;
2357
2358 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2359 unsigned int entry = i % NUM_TX_DESC;
2360 struct ring_info *tx_skb = tp->tx_skb + entry;
2361 unsigned int len = tx_skb->len;
2362
2363 if (len) {
2364 struct sk_buff *skb = tx_skb->skb;
2365
2366 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2367 tp->TxDescArray + entry);
2368 if (skb) {
2369 dev_kfree_skb(skb);
2370 tx_skb->skb = NULL;
2371 }
2372 tp->dev->stats.tx_dropped++;
2373 }
2374 }
2375 tp->cur_tx = tp->dirty_tx = 0;
2376 }
2377
2378 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
2379 {
2380 struct rtl8169_private *tp = netdev_priv(dev);
2381
2382 PREPARE_DELAYED_WORK(&tp->task, task);
2383 schedule_delayed_work(&tp->task, 4);
2384 }
2385
2386 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2387 {
2388 struct rtl8169_private *tp = netdev_priv(dev);
2389 void __iomem *ioaddr = tp->mmio_addr;
2390
2391 synchronize_irq(dev->irq);
2392
2393 /* Wait for any pending NAPI task to complete */
2394 #ifdef CONFIG_R8169_NAPI
2395 napi_disable(&tp->napi);
2396 #endif
2397
2398 rtl8169_irq_mask_and_ack(ioaddr);
2399
2400 #ifdef CONFIG_R8169_NAPI
2401 tp->intr_mask = 0xffff;
2402 RTL_W16(IntrMask, tp->intr_event);
2403 napi_enable(&tp->napi);
2404 #endif
2405 }
2406
2407 static void rtl8169_reinit_task(struct work_struct *work)
2408 {
2409 struct rtl8169_private *tp =
2410 container_of(work, struct rtl8169_private, task.work);
2411 struct net_device *dev = tp->dev;
2412 int ret;
2413
2414 rtnl_lock();
2415
2416 if (!netif_running(dev))
2417 goto out_unlock;
2418
2419 rtl8169_wait_for_quiescence(dev);
2420 rtl8169_close(dev);
2421
2422 ret = rtl8169_open(dev);
2423 if (unlikely(ret < 0)) {
2424 if (net_ratelimit() && netif_msg_drv(tp)) {
2425 printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
2426 " Rescheduling.\n", dev->name, ret);
2427 }
2428 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2429 }
2430
2431 out_unlock:
2432 rtnl_unlock();
2433 }
2434
2435 static void rtl8169_reset_task(struct work_struct *work)
2436 {
2437 struct rtl8169_private *tp =
2438 container_of(work, struct rtl8169_private, task.work);
2439 struct net_device *dev = tp->dev;
2440
2441 rtnl_lock();
2442
2443 if (!netif_running(dev))
2444 goto out_unlock;
2445
2446 rtl8169_wait_for_quiescence(dev);
2447
2448 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
2449 rtl8169_tx_clear(tp);
2450
2451 if (tp->dirty_rx == tp->cur_rx) {
2452 rtl8169_init_ring_indexes(tp);
2453 rtl_hw_start(dev);
2454 netif_wake_queue(dev);
2455 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2456 } else {
2457 if (net_ratelimit() && netif_msg_intr(tp)) {
2458 printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
2459 dev->name);
2460 }
2461 rtl8169_schedule_work(dev, rtl8169_reset_task);
2462 }
2463
2464 out_unlock:
2465 rtnl_unlock();
2466 }
2467
2468 static void rtl8169_tx_timeout(struct net_device *dev)
2469 {
2470 struct rtl8169_private *tp = netdev_priv(dev);
2471
2472 rtl8169_hw_reset(tp->mmio_addr);
2473
2474 /* Let's wait a bit while any (async) irq lands on */
2475 rtl8169_schedule_work(dev, rtl8169_reset_task);
2476 }
2477
2478 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2479 u32 opts1)
2480 {
2481 struct skb_shared_info *info = skb_shinfo(skb);
2482 unsigned int cur_frag, entry;
2483 struct TxDesc * uninitialized_var(txd);
2484
2485 entry = tp->cur_tx;
2486 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2487 skb_frag_t *frag = info->frags + cur_frag;
2488 dma_addr_t mapping;
2489 u32 status, len;
2490 void *addr;
2491
2492 entry = (entry + 1) % NUM_TX_DESC;
2493
2494 txd = tp->TxDescArray + entry;
2495 len = frag->size;
2496 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2497 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2498
2499 /* anti gcc 2.95.3 bugware (sic) */
2500 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2501
2502 txd->opts1 = cpu_to_le32(status);
2503 txd->addr = cpu_to_le64(mapping);
2504
2505 tp->tx_skb[entry].len = len;
2506 }
2507
2508 if (cur_frag) {
2509 tp->tx_skb[entry].skb = skb;
2510 txd->opts1 |= cpu_to_le32(LastFrag);
2511 }
2512
2513 return cur_frag;
2514 }
2515
2516 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2517 {
2518 if (dev->features & NETIF_F_TSO) {
2519 u32 mss = skb_shinfo(skb)->gso_size;
2520
2521 if (mss)
2522 return LargeSend | ((mss & MSSMask) << MSSShift);
2523 }
2524 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2525 const struct iphdr *ip = ip_hdr(skb);
2526
2527 if (ip->protocol == IPPROTO_TCP)
2528 return IPCS | TCPCS;
2529 else if (ip->protocol == IPPROTO_UDP)
2530 return IPCS | UDPCS;
2531 WARN_ON(1); /* we need a WARN() */
2532 }
2533 return 0;
2534 }
2535
2536 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2537 {
2538 struct rtl8169_private *tp = netdev_priv(dev);
2539 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2540 struct TxDesc *txd = tp->TxDescArray + entry;
2541 void __iomem *ioaddr = tp->mmio_addr;
2542 dma_addr_t mapping;
2543 u32 status, len;
2544 u32 opts1;
2545 int ret = NETDEV_TX_OK;
2546
2547 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2548 if (netif_msg_drv(tp)) {
2549 printk(KERN_ERR
2550 "%s: BUG! Tx Ring full when queue awake!\n",
2551 dev->name);
2552 }
2553 goto err_stop;
2554 }
2555
2556 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2557 goto err_stop;
2558
2559 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2560
2561 frags = rtl8169_xmit_frags(tp, skb, opts1);
2562 if (frags) {
2563 len = skb_headlen(skb);
2564 opts1 |= FirstFrag;
2565 } else {
2566 len = skb->len;
2567
2568 if (unlikely(len < ETH_ZLEN)) {
2569 if (skb_padto(skb, ETH_ZLEN))
2570 goto err_update_stats;
2571 len = ETH_ZLEN;
2572 }
2573
2574 opts1 |= FirstFrag | LastFrag;
2575 tp->tx_skb[entry].skb = skb;
2576 }
2577
2578 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2579
2580 tp->tx_skb[entry].len = len;
2581 txd->addr = cpu_to_le64(mapping);
2582 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2583
2584 wmb();
2585
2586 /* anti gcc 2.95.3 bugware (sic) */
2587 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2588 txd->opts1 = cpu_to_le32(status);
2589
2590 dev->trans_start = jiffies;
2591
2592 tp->cur_tx += frags + 1;
2593
2594 smp_wmb();
2595
2596 RTL_W8(TxPoll, NPQ); /* set polling bit */
2597
2598 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2599 netif_stop_queue(dev);
2600 smp_rmb();
2601 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2602 netif_wake_queue(dev);
2603 }
2604
2605 out:
2606 return ret;
2607
2608 err_stop:
2609 netif_stop_queue(dev);
2610 ret = NETDEV_TX_BUSY;
2611 err_update_stats:
2612 dev->stats.tx_dropped++;
2613 goto out;
2614 }
2615
2616 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2617 {
2618 struct rtl8169_private *tp = netdev_priv(dev);
2619 struct pci_dev *pdev = tp->pci_dev;
2620 void __iomem *ioaddr = tp->mmio_addr;
2621 u16 pci_status, pci_cmd;
2622
2623 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2624 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2625
2626 if (netif_msg_intr(tp)) {
2627 printk(KERN_ERR
2628 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2629 dev->name, pci_cmd, pci_status);
2630 }
2631
2632 /*
2633 * The recovery sequence below admits a very elaborated explanation:
2634 * - it seems to work;
2635 * - I did not see what else could be done;
2636 * - it makes iop3xx happy.
2637 *
2638 * Feel free to adjust to your needs.
2639 */
2640 if (pdev->broken_parity_status)
2641 pci_cmd &= ~PCI_COMMAND_PARITY;
2642 else
2643 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
2644
2645 pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
2646
2647 pci_write_config_word(pdev, PCI_STATUS,
2648 pci_status & (PCI_STATUS_DETECTED_PARITY |
2649 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2650 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2651
2652 /* The infamous DAC f*ckup only happens at boot time */
2653 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2654 if (netif_msg_intr(tp))
2655 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2656 tp->cp_cmd &= ~PCIDAC;
2657 RTL_W16(CPlusCmd, tp->cp_cmd);
2658 dev->features &= ~NETIF_F_HIGHDMA;
2659 }
2660
2661 rtl8169_hw_reset(ioaddr);
2662
2663 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2664 }
2665
2666 static void rtl8169_tx_interrupt(struct net_device *dev,
2667 struct rtl8169_private *tp,
2668 void __iomem *ioaddr)
2669 {
2670 unsigned int dirty_tx, tx_left;
2671
2672 dirty_tx = tp->dirty_tx;
2673 smp_rmb();
2674 tx_left = tp->cur_tx - dirty_tx;
2675
2676 while (tx_left > 0) {
2677 unsigned int entry = dirty_tx % NUM_TX_DESC;
2678 struct ring_info *tx_skb = tp->tx_skb + entry;
2679 u32 len = tx_skb->len;
2680 u32 status;
2681
2682 rmb();
2683 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2684 if (status & DescOwn)
2685 break;
2686
2687 dev->stats.tx_bytes += len;
2688 dev->stats.tx_packets++;
2689
2690 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
2691
2692 if (status & LastFrag) {
2693 dev_kfree_skb_irq(tx_skb->skb);
2694 tx_skb->skb = NULL;
2695 }
2696 dirty_tx++;
2697 tx_left--;
2698 }
2699
2700 if (tp->dirty_tx != dirty_tx) {
2701 tp->dirty_tx = dirty_tx;
2702 smp_wmb();
2703 if (netif_queue_stopped(dev) &&
2704 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
2705 netif_wake_queue(dev);
2706 }
2707 /*
2708 * 8168 hack: TxPoll requests are lost when the Tx packets are
2709 * too close. Let's kick an extra TxPoll request when a burst
2710 * of start_xmit activity is detected (if it is not detected,
2711 * it is slow enough). -- FR
2712 */
2713 smp_rmb();
2714 if (tp->cur_tx != dirty_tx)
2715 RTL_W8(TxPoll, NPQ);
2716 }
2717 }
2718
2719 static inline int rtl8169_fragmented_frame(u32 status)
2720 {
2721 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2722 }
2723
2724 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2725 {
2726 u32 opts1 = le32_to_cpu(desc->opts1);
2727 u32 status = opts1 & RxProtoMask;
2728
2729 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
2730 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
2731 ((status == RxProtoIP) && !(opts1 & IPFail)))
2732 skb->ip_summed = CHECKSUM_UNNECESSARY;
2733 else
2734 skb->ip_summed = CHECKSUM_NONE;
2735 }
2736
2737 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
2738 struct rtl8169_private *tp, int pkt_size,
2739 dma_addr_t addr)
2740 {
2741 struct sk_buff *skb;
2742 bool done = false;
2743
2744 if (pkt_size >= rx_copybreak)
2745 goto out;
2746
2747 skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
2748 if (!skb)
2749 goto out;
2750
2751 pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
2752 PCI_DMA_FROMDEVICE);
2753 skb_reserve(skb, NET_IP_ALIGN);
2754 skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
2755 *sk_buff = skb;
2756 done = true;
2757 out:
2758 return done;
2759 }
2760
2761 static int rtl8169_rx_interrupt(struct net_device *dev,
2762 struct rtl8169_private *tp,
2763 void __iomem *ioaddr, u32 budget)
2764 {
2765 unsigned int cur_rx, rx_left;
2766 unsigned int delta, count;
2767
2768 cur_rx = tp->cur_rx;
2769 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
2770 rx_left = rtl8169_rx_quota(rx_left, budget);
2771
2772 for (; rx_left > 0; rx_left--, cur_rx++) {
2773 unsigned int entry = cur_rx % NUM_RX_DESC;
2774 struct RxDesc *desc = tp->RxDescArray + entry;
2775 u32 status;
2776
2777 rmb();
2778 status = le32_to_cpu(desc->opts1);
2779
2780 if (status & DescOwn)
2781 break;
2782 if (unlikely(status & RxRES)) {
2783 if (netif_msg_rx_err(tp)) {
2784 printk(KERN_INFO
2785 "%s: Rx ERROR. status = %08x\n",
2786 dev->name, status);
2787 }
2788 dev->stats.rx_errors++;
2789 if (status & (RxRWT | RxRUNT))
2790 dev->stats.rx_length_errors++;
2791 if (status & RxCRC)
2792 dev->stats.rx_crc_errors++;
2793 if (status & RxFOVF) {
2794 rtl8169_schedule_work(dev, rtl8169_reset_task);
2795 dev->stats.rx_fifo_errors++;
2796 }
2797 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2798 } else {
2799 struct sk_buff *skb = tp->Rx_skbuff[entry];
2800 dma_addr_t addr = le64_to_cpu(desc->addr);
2801 int pkt_size = (status & 0x00001FFF) - 4;
2802 struct pci_dev *pdev = tp->pci_dev;
2803
2804 /*
2805 * The driver does not support incoming fragmented
2806 * frames. They are seen as a symptom of over-mtu
2807 * sized frames.
2808 */
2809 if (unlikely(rtl8169_fragmented_frame(status))) {
2810 dev->stats.rx_dropped++;
2811 dev->stats.rx_length_errors++;
2812 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2813 continue;
2814 }
2815
2816 rtl8169_rx_csum(skb, desc);
2817
2818 if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
2819 pci_dma_sync_single_for_device(pdev, addr,
2820 pkt_size, PCI_DMA_FROMDEVICE);
2821 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2822 } else {
2823 pci_unmap_single(pdev, addr, pkt_size,
2824 PCI_DMA_FROMDEVICE);
2825 tp->Rx_skbuff[entry] = NULL;
2826 }
2827
2828 skb_put(skb, pkt_size);
2829 skb->protocol = eth_type_trans(skb, dev);
2830
2831 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
2832 rtl8169_rx_skb(skb);
2833
2834 dev->last_rx = jiffies;
2835 dev->stats.rx_bytes += pkt_size;
2836 dev->stats.rx_packets++;
2837 }
2838
2839 /* Work around for AMD plateform. */
2840 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
2841 (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
2842 desc->opts2 = 0;
2843 cur_rx++;
2844 }
2845 }
2846
2847 count = cur_rx - tp->cur_rx;
2848 tp->cur_rx = cur_rx;
2849
2850 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
2851 if (!delta && count && netif_msg_intr(tp))
2852 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
2853 tp->dirty_rx += delta;
2854
2855 /*
2856 * FIXME: until there is periodic timer to try and refill the ring,
2857 * a temporary shortage may definitely kill the Rx process.
2858 * - disable the asic to try and avoid an overflow and kick it again
2859 * after refill ?
2860 * - how do others driver handle this condition (Uh oh...).
2861 */
2862 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
2863 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
2864
2865 return count;
2866 }
2867
2868 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
2869 {
2870 struct net_device *dev = dev_instance;
2871 struct rtl8169_private *tp = netdev_priv(dev);
2872 int boguscnt = max_interrupt_work;
2873 void __iomem *ioaddr = tp->mmio_addr;
2874 int status;
2875 int handled = 0;
2876
2877 do {
2878 status = RTL_R16(IntrStatus);
2879
2880 /* hotplug/major error/no more work/shared irq */
2881 if ((status == 0xFFFF) || !status)
2882 break;
2883
2884 handled = 1;
2885
2886 if (unlikely(!netif_running(dev))) {
2887 rtl8169_asic_down(ioaddr);
2888 goto out;
2889 }
2890
2891 status &= tp->intr_mask;
2892 RTL_W16(IntrStatus,
2893 (status & RxFIFOOver) ? (status | RxOverflow) : status);
2894
2895 if (!(status & tp->intr_event))
2896 break;
2897
2898 /* Work around for rx fifo overflow */
2899 if (unlikely(status & RxFIFOOver) &&
2900 (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
2901 netif_stop_queue(dev);
2902 rtl8169_tx_timeout(dev);
2903 break;
2904 }
2905
2906 if (unlikely(status & SYSErr)) {
2907 rtl8169_pcierr_interrupt(dev);
2908 break;
2909 }
2910
2911 if (status & LinkChg)
2912 rtl8169_check_link_status(dev, tp, ioaddr);
2913
2914 #ifdef CONFIG_R8169_NAPI
2915 if (status & tp->napi_event) {
2916 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
2917 tp->intr_mask = ~tp->napi_event;
2918
2919 if (likely(netif_rx_schedule_prep(dev, &tp->napi)))
2920 __netif_rx_schedule(dev, &tp->napi);
2921 else if (netif_msg_intr(tp)) {
2922 printk(KERN_INFO "%s: interrupt %04x in poll\n",
2923 dev->name, status);
2924 }
2925 }
2926 break;
2927 #else
2928 /* Rx interrupt */
2929 if (status & (RxOK | RxOverflow | RxFIFOOver))
2930 rtl8169_rx_interrupt(dev, tp, ioaddr, ~(u32)0);
2931
2932 /* Tx interrupt */
2933 if (status & (TxOK | TxErr))
2934 rtl8169_tx_interrupt(dev, tp, ioaddr);
2935 #endif
2936
2937 boguscnt--;
2938 } while (boguscnt > 0);
2939
2940 if (boguscnt <= 0) {
2941 if (netif_msg_intr(tp) && net_ratelimit() ) {
2942 printk(KERN_WARNING
2943 "%s: Too much work at interrupt!\n", dev->name);
2944 }
2945 /* Clear all interrupt sources. */
2946 RTL_W16(IntrStatus, 0xffff);
2947 }
2948 out:
2949 return IRQ_RETVAL(handled);
2950 }
2951
2952 #ifdef CONFIG_R8169_NAPI
2953 static int rtl8169_poll(struct napi_struct *napi, int budget)
2954 {
2955 struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
2956 struct net_device *dev = tp->dev;
2957 void __iomem *ioaddr = tp->mmio_addr;
2958 int work_done;
2959
2960 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
2961 rtl8169_tx_interrupt(dev, tp, ioaddr);
2962
2963 if (work_done < budget) {
2964 netif_rx_complete(dev, napi);
2965 tp->intr_mask = 0xffff;
2966 /*
2967 * 20040426: the barrier is not strictly required but the
2968 * behavior of the irq handler could be less predictable
2969 * without it. Btw, the lack of flush for the posted pci
2970 * write is safe - FR
2971 */
2972 smp_wmb();
2973 RTL_W16(IntrMask, tp->intr_event);
2974 }
2975
2976 return work_done;
2977 }
2978 #endif
2979
2980 static void rtl8169_down(struct net_device *dev)
2981 {
2982 struct rtl8169_private *tp = netdev_priv(dev);
2983 void __iomem *ioaddr = tp->mmio_addr;
2984 unsigned int intrmask;
2985
2986 rtl8169_delete_timer(dev);
2987
2988 netif_stop_queue(dev);
2989
2990 #ifdef CONFIG_R8169_NAPI
2991 napi_disable(&tp->napi);
2992 #endif
2993
2994 core_down:
2995 spin_lock_irq(&tp->lock);
2996
2997 rtl8169_asic_down(ioaddr);
2998
2999 /* Update the error counts. */
3000 dev->stats.rx_missed_errors += RTL_R32(RxMissed);
3001 RTL_W32(RxMissed, 0);
3002
3003 spin_unlock_irq(&tp->lock);
3004
3005 synchronize_irq(dev->irq);
3006
3007 /* Give a racing hard_start_xmit a few cycles to complete. */
3008 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
3009
3010 /*
3011 * And now for the 50k$ question: are IRQ disabled or not ?
3012 *
3013 * Two paths lead here:
3014 * 1) dev->close
3015 * -> netif_running() is available to sync the current code and the
3016 * IRQ handler. See rtl8169_interrupt for details.
3017 * 2) dev->change_mtu
3018 * -> rtl8169_poll can not be issued again and re-enable the
3019 * interruptions. Let's simply issue the IRQ down sequence again.
3020 *
3021 * No loop if hotpluged or major error (0xffff).
3022 */
3023 intrmask = RTL_R16(IntrMask);
3024 if (intrmask && (intrmask != 0xffff))
3025 goto core_down;
3026
3027 rtl8169_tx_clear(tp);
3028
3029 rtl8169_rx_clear(tp);
3030 }
3031
3032 static int rtl8169_close(struct net_device *dev)
3033 {
3034 struct rtl8169_private *tp = netdev_priv(dev);
3035 struct pci_dev *pdev = tp->pci_dev;
3036
3037 rtl8169_down(dev);
3038
3039 free_irq(dev->irq, dev);
3040
3041 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3042 tp->RxPhyAddr);
3043 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3044 tp->TxPhyAddr);
3045 tp->TxDescArray = NULL;
3046 tp->RxDescArray = NULL;
3047
3048 return 0;
3049 }
3050
3051 static void rtl_set_rx_mode(struct net_device *dev)
3052 {
3053 struct rtl8169_private *tp = netdev_priv(dev);
3054 void __iomem *ioaddr = tp->mmio_addr;
3055 unsigned long flags;
3056 u32 mc_filter[2]; /* Multicast hash filter */
3057 int rx_mode;
3058 u32 tmp = 0;
3059
3060 if (dev->flags & IFF_PROMISC) {
3061 /* Unconditionally log net taps. */
3062 if (netif_msg_link(tp)) {
3063 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3064 dev->name);
3065 }
3066 rx_mode =
3067 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3068 AcceptAllPhys;
3069 mc_filter[1] = mc_filter[0] = 0xffffffff;
3070 } else if ((dev->mc_count > multicast_filter_limit)
3071 || (dev->flags & IFF_ALLMULTI)) {
3072 /* Too many to filter perfectly -- accept all multicasts. */
3073 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3074 mc_filter[1] = mc_filter[0] = 0xffffffff;
3075 } else {
3076 struct dev_mc_list *mclist;
3077 unsigned int i;
3078
3079 rx_mode = AcceptBroadcast | AcceptMyPhys;
3080 mc_filter[1] = mc_filter[0] = 0;
3081 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3082 i++, mclist = mclist->next) {
3083 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3084 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3085 rx_mode |= AcceptMulticast;
3086 }
3087 }
3088
3089 spin_lock_irqsave(&tp->lock, flags);
3090
3091 tmp = rtl8169_rx_config | rx_mode |
3092 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3093
3094 if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
3095 (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
3096 (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
3097 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
3098 (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
3099 (tp->mac_version == RTL_GIGA_MAC_VER_16) ||
3100 (tp->mac_version == RTL_GIGA_MAC_VER_17)) {
3101 mc_filter[0] = 0xffffffff;
3102 mc_filter[1] = 0xffffffff;
3103 }
3104
3105 RTL_W32(MAR0 + 0, mc_filter[0]);
3106 RTL_W32(MAR0 + 4, mc_filter[1]);
3107
3108 RTL_W32(RxConfig, tmp);
3109
3110 spin_unlock_irqrestore(&tp->lock, flags);
3111 }
3112
3113 /**
3114 * rtl8169_get_stats - Get rtl8169 read/write statistics
3115 * @dev: The Ethernet Device to get statistics for
3116 *
3117 * Get TX/RX statistics for rtl8169
3118 */
3119 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3120 {
3121 struct rtl8169_private *tp = netdev_priv(dev);
3122 void __iomem *ioaddr = tp->mmio_addr;
3123 unsigned long flags;
3124
3125 if (netif_running(dev)) {
3126 spin_lock_irqsave(&tp->lock, flags);
3127 dev->stats.rx_missed_errors += RTL_R32(RxMissed);
3128 RTL_W32(RxMissed, 0);
3129 spin_unlock_irqrestore(&tp->lock, flags);
3130 }
3131
3132 return &dev->stats;
3133 }
3134
3135 #ifdef CONFIG_PM
3136
3137 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3138 {
3139 struct net_device *dev = pci_get_drvdata(pdev);
3140 struct rtl8169_private *tp = netdev_priv(dev);
3141 void __iomem *ioaddr = tp->mmio_addr;
3142
3143 if (!netif_running(dev))
3144 goto out_pci_suspend;
3145
3146 netif_device_detach(dev);
3147 netif_stop_queue(dev);
3148
3149 spin_lock_irq(&tp->lock);
3150
3151 rtl8169_asic_down(ioaddr);
3152
3153 dev->stats.rx_missed_errors += RTL_R32(RxMissed);
3154 RTL_W32(RxMissed, 0);
3155
3156 spin_unlock_irq(&tp->lock);
3157
3158 out_pci_suspend:
3159 pci_save_state(pdev);
3160 pci_enable_wake(pdev, pci_choose_state(pdev, state),
3161 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3162 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3163
3164 return 0;
3165 }
3166
3167 static int rtl8169_resume(struct pci_dev *pdev)
3168 {
3169 struct net_device *dev = pci_get_drvdata(pdev);
3170
3171 pci_set_power_state(pdev, PCI_D0);
3172 pci_restore_state(pdev);
3173 pci_enable_wake(pdev, PCI_D0, 0);
3174
3175 if (!netif_running(dev))
3176 goto out;
3177
3178 netif_device_attach(dev);
3179
3180 rtl8169_schedule_work(dev, rtl8169_reset_task);
3181 out:
3182 return 0;
3183 }
3184
3185 #endif /* CONFIG_PM */
3186
3187 static struct pci_driver rtl8169_pci_driver = {
3188 .name = MODULENAME,
3189 .id_table = rtl8169_pci_tbl,
3190 .probe = rtl8169_init_one,
3191 .remove = __devexit_p(rtl8169_remove_one),
3192 #ifdef CONFIG_PM
3193 .suspend = rtl8169_suspend,
3194 .resume = rtl8169_resume,
3195 #endif
3196 };
3197
3198 static int __init rtl8169_init_module(void)
3199 {
3200 return pci_register_driver(&rtl8169_pci_driver);
3201 }
3202
3203 static void __exit rtl8169_cleanup_module(void)
3204 {
3205 pci_unregister_driver(&rtl8169_pci_driver);
3206 }
3207
3208 module_init(rtl8169_init_module);
3209 module_exit(rtl8169_cleanup_module);
WRT350N Kernel Patches