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Merge git://git.infradead.org/mtd-2.6
[linux-2.6/zen-sources.git] / drivers / net / r8169.c
blob4b7cb389dc4989edaf2f70ce9da55420484767bd
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 #define RTL8169_VERSION "2.3LK-NAPI"
32 #define MODULENAME "r8169"
33 #define PFX MODULENAME ": "
34
35 #ifdef RTL8169_DEBUG
36 #define assert(expr) \
37 if (!(expr)) { \
38 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
39 #expr,__FILE__,__func__,__LINE__); \
40 }
41 #define dprintk(fmt, args...) \
42 do { printk(KERN_DEBUG PFX fmt, ## args); } while (0)
43 #else
44 #define assert(expr) do {} while (0)
45 #define dprintk(fmt, args...) do {} while (0)
46 #endif /* RTL8169_DEBUG */
47
48 #define R8169_MSG_DEFAULT \
49 (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
50
51 #define TX_BUFFS_AVAIL(tp) \
52 (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
53
54 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
55 static const int max_interrupt_work = 20;
56
57 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
58 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
59 static const int multicast_filter_limit = 32;
60
61 /* MAC address length */
62 #define MAC_ADDR_LEN 6
63
64 #define MAX_READ_REQUEST_SHIFT 12
65 #define RX_FIFO_THRESH 7 /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
66 #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
67 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
68 #define EarlyTxThld 0x3F /* 0x3F means NO early transmit */
69 #define RxPacketMaxSize 0x3FE8 /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
70 #define SafeMtu 0x1c20 /* ... actually life sucks beyond ~7k */
71 #define InterFrameGap 0x03 /* 3 means InterFrameGap = the shortest one */
72
73 #define R8169_REGS_SIZE 256
74 #define R8169_NAPI_WEIGHT 64
75 #define NUM_TX_DESC 64 /* Number of Tx descriptor registers */
76 #define NUM_RX_DESC 256 /* Number of Rx descriptor registers */
77 #define RX_BUF_SIZE 1536 /* Rx Buffer size */
78 #define R8169_TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc))
79 #define R8169_RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))
80
81 #define RTL8169_TX_TIMEOUT (6*HZ)
82 #define RTL8169_PHY_TIMEOUT (10*HZ)
83
84 #define RTL_EEPROM_SIG cpu_to_le32(0x8129)
85 #define RTL_EEPROM_SIG_MASK cpu_to_le32(0xffff)
86 #define RTL_EEPROM_SIG_ADDR 0x0000
87
88 /* write/read MMIO register */
89 #define RTL_W8(reg, val8) writeb ((val8), ioaddr + (reg))
90 #define RTL_W16(reg, val16) writew ((val16), ioaddr + (reg))
91 #define RTL_W32(reg, val32) writel ((val32), ioaddr + (reg))
92 #define RTL_R8(reg) readb (ioaddr + (reg))
93 #define RTL_R16(reg) readw (ioaddr + (reg))
94 #define RTL_R32(reg) ((unsigned long) readl (ioaddr + (reg)))
95
96 enum mac_version {
97 RTL_GIGA_MAC_VER_01 = 0x01, // 8169
98 RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
99 RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
100 RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
101 RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
102 RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
103 RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
104 RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
105 RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
106 RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
107 RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
108 RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
109 RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
110 RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
111 RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
112 RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
113 RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
114 RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
115 RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
116 RTL_GIGA_MAC_VER_20 = 0x14, // 8168C
117 RTL_GIGA_MAC_VER_21 = 0x15, // 8168C
118 RTL_GIGA_MAC_VER_22 = 0x16, // 8168C
119 RTL_GIGA_MAC_VER_23 = 0x17, // 8168CP
120 RTL_GIGA_MAC_VER_24 = 0x18, // 8168CP
121 RTL_GIGA_MAC_VER_25 = 0x19 // 8168D
122 };
123
124 #define _R(NAME,MAC,MASK) \
125 { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
126
127 static const struct {
128 const char *name;
129 u8 mac_version;
130 u32 RxConfigMask; /* Clears the bits supported by this chip */
131 } rtl_chip_info[] = {
132 _R("RTL8169", RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
133 _R("RTL8169s", RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
134 _R("RTL8110s", RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
135 _R("RTL8169sb/8110sb", RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
136 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
137 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
138 _R("RTL8102e", RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
139 _R("RTL8102e", RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
140 _R("RTL8102e", RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
141 _R("RTL8101e", RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
142 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
143 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
144 _R("RTL8101e", RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
145 _R("RTL8100e", RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
146 _R("RTL8100e", RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
147 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
148 _R("RTL8101e", RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
149 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
150 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
151 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_20, 0xff7e1880), // PCI-E
152 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_21, 0xff7e1880), // PCI-E
153 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_22, 0xff7e1880), // PCI-E
154 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_23, 0xff7e1880), // PCI-E
155 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_24, 0xff7e1880), // PCI-E
156 _R("RTL8168d/8111d", RTL_GIGA_MAC_VER_25, 0xff7e1880) // PCI-E
157 };
158 #undef _R
159
160 enum cfg_version {
161 RTL_CFG_0 = 0x00,
162 RTL_CFG_1,
163 RTL_CFG_2
164 };
165
166 static void rtl_hw_start_8169(struct net_device *);
167 static void rtl_hw_start_8168(struct net_device *);
168 static void rtl_hw_start_8101(struct net_device *);
169
170 static struct pci_device_id rtl8169_pci_tbl[] = {
171 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
172 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
173 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167), 0, 0, RTL_CFG_0 },
174 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168), 0, 0, RTL_CFG_1 },
175 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), 0, 0, RTL_CFG_0 },
176 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4300), 0, 0, RTL_CFG_0 },
177 { PCI_DEVICE(PCI_VENDOR_ID_AT, 0xc107), 0, 0, RTL_CFG_0 },
178 { PCI_DEVICE(0x16ec, 0x0116), 0, 0, RTL_CFG_0 },
179 { PCI_VENDOR_ID_LINKSYS, 0x1032,
180 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
181 { 0x0001, 0x8168,
182 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
183 {0,},
184 };
185
186 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
187
188 static int rx_copybreak = 200;
189 static int use_dac;
190 static struct {
191 u32 msg_enable;
192 } debug = { -1 };
193
194 enum rtl_registers {
195 MAC0 = 0, /* Ethernet hardware address. */
196 MAC4 = 4,
197 MAR0 = 8, /* Multicast filter. */
198 CounterAddrLow = 0x10,
199 CounterAddrHigh = 0x14,
200 TxDescStartAddrLow = 0x20,
201 TxDescStartAddrHigh = 0x24,
202 TxHDescStartAddrLow = 0x28,
203 TxHDescStartAddrHigh = 0x2c,
204 FLASH = 0x30,
205 ERSR = 0x36,
206 ChipCmd = 0x37,
207 TxPoll = 0x38,
208 IntrMask = 0x3c,
209 IntrStatus = 0x3e,
210 TxConfig = 0x40,
211 RxConfig = 0x44,
212 RxMissed = 0x4c,
213 Cfg9346 = 0x50,
214 Config0 = 0x51,
215 Config1 = 0x52,
216 Config2 = 0x53,
217 Config3 = 0x54,
218 Config4 = 0x55,
219 Config5 = 0x56,
220 MultiIntr = 0x5c,
221 PHYAR = 0x60,
222 PHYstatus = 0x6c,
223 RxMaxSize = 0xda,
224 CPlusCmd = 0xe0,
225 IntrMitigate = 0xe2,
226 RxDescAddrLow = 0xe4,
227 RxDescAddrHigh = 0xe8,
228 EarlyTxThres = 0xec,
229 FuncEvent = 0xf0,
230 FuncEventMask = 0xf4,
231 FuncPresetState = 0xf8,
232 FuncForceEvent = 0xfc,
233 };
234
235 enum rtl8110_registers {
236 TBICSR = 0x64,
237 TBI_ANAR = 0x68,
238 TBI_LPAR = 0x6a,
239 };
240
241 enum rtl8168_8101_registers {
242 CSIDR = 0x64,
243 CSIAR = 0x68,
244 #define CSIAR_FLAG 0x80000000
245 #define CSIAR_WRITE_CMD 0x80000000
246 #define CSIAR_BYTE_ENABLE 0x0f
247 #define CSIAR_BYTE_ENABLE_SHIFT 12
248 #define CSIAR_ADDR_MASK 0x0fff
249
250 EPHYAR = 0x80,
251 #define EPHYAR_FLAG 0x80000000
252 #define EPHYAR_WRITE_CMD 0x80000000
253 #define EPHYAR_REG_MASK 0x1f
254 #define EPHYAR_REG_SHIFT 16
255 #define EPHYAR_DATA_MASK 0xffff
256 DBG_REG = 0xd1,
257 #define FIX_NAK_1 (1 << 4)
258 #define FIX_NAK_2 (1 << 3)
259 };
260
261 enum rtl_register_content {
262 /* InterruptStatusBits */
263 SYSErr = 0x8000,
264 PCSTimeout = 0x4000,
265 SWInt = 0x0100,
266 TxDescUnavail = 0x0080,
267 RxFIFOOver = 0x0040,
268 LinkChg = 0x0020,
269 RxOverflow = 0x0010,
270 TxErr = 0x0008,
271 TxOK = 0x0004,
272 RxErr = 0x0002,
273 RxOK = 0x0001,
274
275 /* RxStatusDesc */
276 RxFOVF = (1 << 23),
277 RxRWT = (1 << 22),
278 RxRES = (1 << 21),
279 RxRUNT = (1 << 20),
280 RxCRC = (1 << 19),
281
282 /* ChipCmdBits */
283 CmdReset = 0x10,
284 CmdRxEnb = 0x08,
285 CmdTxEnb = 0x04,
286 RxBufEmpty = 0x01,
287
288 /* TXPoll register p.5 */
289 HPQ = 0x80, /* Poll cmd on the high prio queue */
290 NPQ = 0x40, /* Poll cmd on the low prio queue */
291 FSWInt = 0x01, /* Forced software interrupt */
292
293 /* Cfg9346Bits */
294 Cfg9346_Lock = 0x00,
295 Cfg9346_Unlock = 0xc0,
296
297 /* rx_mode_bits */
298 AcceptErr = 0x20,
299 AcceptRunt = 0x10,
300 AcceptBroadcast = 0x08,
301 AcceptMulticast = 0x04,
302 AcceptMyPhys = 0x02,
303 AcceptAllPhys = 0x01,
304
305 /* RxConfigBits */
306 RxCfgFIFOShift = 13,
307 RxCfgDMAShift = 8,
308
309 /* TxConfigBits */
310 TxInterFrameGapShift = 24,
311 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
312
313 /* Config1 register p.24 */
314 LEDS1 = (1 << 7),
315 LEDS0 = (1 << 6),
316 MSIEnable = (1 << 5), /* Enable Message Signaled Interrupt */
317 Speed_down = (1 << 4),
318 MEMMAP = (1 << 3),
319 IOMAP = (1 << 2),
320 VPD = (1 << 1),
321 PMEnable = (1 << 0), /* Power Management Enable */
322
323 /* Config2 register p. 25 */
324 PCI_Clock_66MHz = 0x01,
325 PCI_Clock_33MHz = 0x00,
326
327 /* Config3 register p.25 */
328 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
329 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
330 Beacon_en = (1 << 0), /* 8168 only. Reserved in the 8168b */
331
332 /* Config5 register p.27 */
333 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
334 MWF = (1 << 5), /* Accept Multicast wakeup frame */
335 UWF = (1 << 4), /* Accept Unicast wakeup frame */
336 LanWake = (1 << 1), /* LanWake enable/disable */
337 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
338
339 /* TBICSR p.28 */
340 TBIReset = 0x80000000,
341 TBILoopback = 0x40000000,
342 TBINwEnable = 0x20000000,
343 TBINwRestart = 0x10000000,
344 TBILinkOk = 0x02000000,
345 TBINwComplete = 0x01000000,
346
347 /* CPlusCmd p.31 */
348 EnableBist = (1 << 15), // 8168 8101
349 Mac_dbgo_oe = (1 << 14), // 8168 8101
350 Normal_mode = (1 << 13), // unused
351 Force_half_dup = (1 << 12), // 8168 8101
352 Force_rxflow_en = (1 << 11), // 8168 8101
353 Force_txflow_en = (1 << 10), // 8168 8101
354 Cxpl_dbg_sel = (1 << 9), // 8168 8101
355 ASF = (1 << 8), // 8168 8101
356 PktCntrDisable = (1 << 7), // 8168 8101
357 Mac_dbgo_sel = 0x001c, // 8168
358 RxVlan = (1 << 6),
359 RxChkSum = (1 << 5),
360 PCIDAC = (1 << 4),
361 PCIMulRW = (1 << 3),
362 INTT_0 = 0x0000, // 8168
363 INTT_1 = 0x0001, // 8168
364 INTT_2 = 0x0002, // 8168
365 INTT_3 = 0x0003, // 8168
366
367 /* rtl8169_PHYstatus */
368 TBI_Enable = 0x80,
369 TxFlowCtrl = 0x40,
370 RxFlowCtrl = 0x20,
371 _1000bpsF = 0x10,
372 _100bps = 0x08,
373 _10bps = 0x04,
374 LinkStatus = 0x02,
375 FullDup = 0x01,
376
377 /* _TBICSRBit */
378 TBILinkOK = 0x02000000,
379
380 /* DumpCounterCommand */
381 CounterDump = 0x8,
382 };
383
384 enum desc_status_bit {
385 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
386 RingEnd = (1 << 30), /* End of descriptor ring */
387 FirstFrag = (1 << 29), /* First segment of a packet */
388 LastFrag = (1 << 28), /* Final segment of a packet */
389
390 /* Tx private */
391 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
392 MSSShift = 16, /* MSS value position */
393 MSSMask = 0xfff, /* MSS value + LargeSend bit: 12 bits */
394 IPCS = (1 << 18), /* Calculate IP checksum */
395 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
396 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
397 TxVlanTag = (1 << 17), /* Add VLAN tag */
398
399 /* Rx private */
400 PID1 = (1 << 18), /* Protocol ID bit 1/2 */
401 PID0 = (1 << 17), /* Protocol ID bit 2/2 */
402
403 #define RxProtoUDP (PID1)
404 #define RxProtoTCP (PID0)
405 #define RxProtoIP (PID1 | PID0)
406 #define RxProtoMask RxProtoIP
407
408 IPFail = (1 << 16), /* IP checksum failed */
409 UDPFail = (1 << 15), /* UDP/IP checksum failed */
410 TCPFail = (1 << 14), /* TCP/IP checksum failed */
411 RxVlanTag = (1 << 16), /* VLAN tag available */
412 };
413
414 #define RsvdMask 0x3fffc000
415
416 struct TxDesc {
417 __le32 opts1;
418 __le32 opts2;
419 __le64 addr;
420 };
421
422 struct RxDesc {
423 __le32 opts1;
424 __le32 opts2;
425 __le64 addr;
426 };
427
428 struct ring_info {
429 struct sk_buff *skb;
430 u32 len;
431 u8 __pad[sizeof(void *) - sizeof(u32)];
432 };
433
434 enum features {
435 RTL_FEATURE_WOL = (1 << 0),
436 RTL_FEATURE_MSI = (1 << 1),
437 RTL_FEATURE_GMII = (1 << 2),
438 };
439
440 struct rtl8169_private {
441 void __iomem *mmio_addr; /* memory map physical address */
442 struct pci_dev *pci_dev; /* Index of PCI device */
443 struct net_device *dev;
444 struct napi_struct napi;
445 spinlock_t lock; /* spin lock flag */
446 u32 msg_enable;
447 int chipset;
448 int mac_version;
449 u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
450 u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
451 u32 dirty_rx;
452 u32 dirty_tx;
453 struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
454 struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
455 dma_addr_t TxPhyAddr;
456 dma_addr_t RxPhyAddr;
457 struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
458 struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
459 unsigned align;
460 unsigned rx_buf_sz;
461 struct timer_list timer;
462 u16 cp_cmd;
463 u16 intr_event;
464 u16 napi_event;
465 u16 intr_mask;
466 int phy_auto_nego_reg;
467 int phy_1000_ctrl_reg;
468 #ifdef CONFIG_R8169_VLAN
469 struct vlan_group *vlgrp;
470 #endif
471 int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
472 int (*get_settings)(struct net_device *, struct ethtool_cmd *);
473 void (*phy_reset_enable)(void __iomem *);
474 void (*hw_start)(struct net_device *);
475 unsigned int (*phy_reset_pending)(void __iomem *);
476 unsigned int (*link_ok)(void __iomem *);
477 int pcie_cap;
478 struct delayed_work task;
479 unsigned features;
480
481 struct mii_if_info mii;
482 };
483
484 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
485 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
486 module_param(rx_copybreak, int, 0);
487 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
488 module_param(use_dac, int, 0);
489 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
490 module_param_named(debug, debug.msg_enable, int, 0);
491 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
492 MODULE_LICENSE("GPL");
493 MODULE_VERSION(RTL8169_VERSION);
494
495 static int rtl8169_open(struct net_device *dev);
496 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
497 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
498 static int rtl8169_init_ring(struct net_device *dev);
499 static void rtl_hw_start(struct net_device *dev);
500 static int rtl8169_close(struct net_device *dev);
501 static void rtl_set_rx_mode(struct net_device *dev);
502 static void rtl8169_tx_timeout(struct net_device *dev);
503 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
504 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
505 void __iomem *, u32 budget);
506 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
507 static void rtl8169_down(struct net_device *dev);
508 static void rtl8169_rx_clear(struct rtl8169_private *tp);
509 static int rtl8169_poll(struct napi_struct *napi, int budget);
510
511 static const unsigned int rtl8169_rx_config =
512 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
513
514 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
515 {
516 int i;
517
518 RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
519
520 for (i = 20; i > 0; i--) {
521 /*
522 * Check if the RTL8169 has completed writing to the specified
523 * MII register.
524 */
525 if (!(RTL_R32(PHYAR) & 0x80000000))
526 break;
527 udelay(25);
528 }
529 }
530
531 static int mdio_read(void __iomem *ioaddr, int reg_addr)
532 {
533 int i, value = -1;
534
535 RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
536
537 for (i = 20; i > 0; i--) {
538 /*
539 * Check if the RTL8169 has completed retrieving data from
540 * the specified MII register.
541 */
542 if (RTL_R32(PHYAR) & 0x80000000) {
543 value = RTL_R32(PHYAR) & 0xffff;
544 break;
545 }
546 udelay(25);
547 }
548 return value;
549 }
550
551 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
552 {
553 mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
554 }
555
556 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
557 int val)
558 {
559 struct rtl8169_private *tp = netdev_priv(dev);
560 void __iomem *ioaddr = tp->mmio_addr;
561
562 mdio_write(ioaddr, location, val);
563 }
564
565 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
566 {
567 struct rtl8169_private *tp = netdev_priv(dev);
568 void __iomem *ioaddr = tp->mmio_addr;
569
570 return mdio_read(ioaddr, location);
571 }
572
573 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
574 {
575 unsigned int i;
576
577 RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
578 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
579
580 for (i = 0; i < 100; i++) {
581 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
582 break;
583 udelay(10);
584 }
585 }
586
587 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
588 {
589 u16 value = 0xffff;
590 unsigned int i;
591
592 RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
593
594 for (i = 0; i < 100; i++) {
595 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
596 value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
597 break;
598 }
599 udelay(10);
600 }
601
602 return value;
603 }
604
605 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
606 {
607 unsigned int i;
608
609 RTL_W32(CSIDR, value);
610 RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
611 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
612
613 for (i = 0; i < 100; i++) {
614 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
615 break;
616 udelay(10);
617 }
618 }
619
620 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
621 {
622 u32 value = ~0x00;
623 unsigned int i;
624
625 RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
626 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
627
628 for (i = 0; i < 100; i++) {
629 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
630 value = RTL_R32(CSIDR);
631 break;
632 }
633 udelay(10);
634 }
635
636 return value;
637 }
638
639 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
640 {
641 RTL_W16(IntrMask, 0x0000);
642
643 RTL_W16(IntrStatus, 0xffff);
644 }
645
646 static void rtl8169_asic_down(void __iomem *ioaddr)
647 {
648 RTL_W8(ChipCmd, 0x00);
649 rtl8169_irq_mask_and_ack(ioaddr);
650 RTL_R16(CPlusCmd);
651 }
652
653 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
654 {
655 return RTL_R32(TBICSR) & TBIReset;
656 }
657
658 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
659 {
660 return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
661 }
662
663 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
664 {
665 return RTL_R32(TBICSR) & TBILinkOk;
666 }
667
668 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
669 {
670 return RTL_R8(PHYstatus) & LinkStatus;
671 }
672
673 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
674 {
675 RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
676 }
677
678 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
679 {
680 unsigned int val;
681
682 val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
683 mdio_write(ioaddr, MII_BMCR, val & 0xffff);
684 }
685
686 static void rtl8169_check_link_status(struct net_device *dev,
687 struct rtl8169_private *tp,
688 void __iomem *ioaddr)
689 {
690 unsigned long flags;
691
692 spin_lock_irqsave(&tp->lock, flags);
693 if (tp->link_ok(ioaddr)) {
694 netif_carrier_on(dev);
695 if (netif_msg_ifup(tp))
696 printk(KERN_INFO PFX "%s: link up\n", dev->name);
697 } else {
698 if (netif_msg_ifdown(tp))
699 printk(KERN_INFO PFX "%s: link down\n", dev->name);
700 netif_carrier_off(dev);
701 }
702 spin_unlock_irqrestore(&tp->lock, flags);
703 }
704
705 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
706 {
707 struct rtl8169_private *tp = netdev_priv(dev);
708 void __iomem *ioaddr = tp->mmio_addr;
709 u8 options;
710
711 wol->wolopts = 0;
712
713 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
714 wol->supported = WAKE_ANY;
715
716 spin_lock_irq(&tp->lock);
717
718 options = RTL_R8(Config1);
719 if (!(options & PMEnable))
720 goto out_unlock;
721
722 options = RTL_R8(Config3);
723 if (options & LinkUp)
724 wol->wolopts |= WAKE_PHY;
725 if (options & MagicPacket)
726 wol->wolopts |= WAKE_MAGIC;
727
728 options = RTL_R8(Config5);
729 if (options & UWF)
730 wol->wolopts |= WAKE_UCAST;
731 if (options & BWF)
732 wol->wolopts |= WAKE_BCAST;
733 if (options & MWF)
734 wol->wolopts |= WAKE_MCAST;
735
736 out_unlock:
737 spin_unlock_irq(&tp->lock);
738 }
739
740 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
741 {
742 struct rtl8169_private *tp = netdev_priv(dev);
743 void __iomem *ioaddr = tp->mmio_addr;
744 unsigned int i;
745 static struct {
746 u32 opt;
747 u16 reg;
748 u8 mask;
749 } cfg[] = {
750 { WAKE_ANY, Config1, PMEnable },
751 { WAKE_PHY, Config3, LinkUp },
752 { WAKE_MAGIC, Config3, MagicPacket },
753 { WAKE_UCAST, Config5, UWF },
754 { WAKE_BCAST, Config5, BWF },
755 { WAKE_MCAST, Config5, MWF },
756 { WAKE_ANY, Config5, LanWake }
757 };
758
759 spin_lock_irq(&tp->lock);
760
761 RTL_W8(Cfg9346, Cfg9346_Unlock);
762
763 for (i = 0; i < ARRAY_SIZE(cfg); i++) {
764 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
765 if (wol->wolopts & cfg[i].opt)
766 options |= cfg[i].mask;
767 RTL_W8(cfg[i].reg, options);
768 }
769
770 RTL_W8(Cfg9346, Cfg9346_Lock);
771
772 if (wol->wolopts)
773 tp->features |= RTL_FEATURE_WOL;
774 else
775 tp->features &= ~RTL_FEATURE_WOL;
776 device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts);
777
778 spin_unlock_irq(&tp->lock);
779
780 return 0;
781 }
782
783 static void rtl8169_get_drvinfo(struct net_device *dev,
784 struct ethtool_drvinfo *info)
785 {
786 struct rtl8169_private *tp = netdev_priv(dev);
787
788 strcpy(info->driver, MODULENAME);
789 strcpy(info->version, RTL8169_VERSION);
790 strcpy(info->bus_info, pci_name(tp->pci_dev));
791 }
792
793 static int rtl8169_get_regs_len(struct net_device *dev)
794 {
795 return R8169_REGS_SIZE;
796 }
797
798 static int rtl8169_set_speed_tbi(struct net_device *dev,
799 u8 autoneg, u16 speed, u8 duplex)
800 {
801 struct rtl8169_private *tp = netdev_priv(dev);
802 void __iomem *ioaddr = tp->mmio_addr;
803 int ret = 0;
804 u32 reg;
805
806 reg = RTL_R32(TBICSR);
807 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
808 (duplex == DUPLEX_FULL)) {
809 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
810 } else if (autoneg == AUTONEG_ENABLE)
811 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
812 else {
813 if (netif_msg_link(tp)) {
814 printk(KERN_WARNING "%s: "
815 "incorrect speed setting refused in TBI mode\n",
816 dev->name);
817 }
818 ret = -EOPNOTSUPP;
819 }
820
821 return ret;
822 }
823
824 static int rtl8169_set_speed_xmii(struct net_device *dev,
825 u8 autoneg, u16 speed, u8 duplex)
826 {
827 struct rtl8169_private *tp = netdev_priv(dev);
828 void __iomem *ioaddr = tp->mmio_addr;
829 int auto_nego, giga_ctrl;
830
831 auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
832 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
833 ADVERTISE_100HALF | ADVERTISE_100FULL);
834 giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
835 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
836
837 if (autoneg == AUTONEG_ENABLE) {
838 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
839 ADVERTISE_100HALF | ADVERTISE_100FULL);
840 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
841 } else {
842 if (speed == SPEED_10)
843 auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
844 else if (speed == SPEED_100)
845 auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
846 else if (speed == SPEED_1000)
847 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
848
849 if (duplex == DUPLEX_HALF)
850 auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
851
852 if (duplex == DUPLEX_FULL)
853 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
854
855 /* This tweak comes straight from Realtek's driver. */
856 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
857 ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
858 (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
859 auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
860 }
861 }
862
863 /* The 8100e/8101e/8102e do Fast Ethernet only. */
864 if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
865 (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
866 (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
867 (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
868 (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
869 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
870 (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
871 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
872 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
873 netif_msg_link(tp)) {
874 printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
875 dev->name);
876 }
877 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
878 }
879
880 auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
881
882 if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
883 (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
884 (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
885 /*
886 * Wake up the PHY.
887 * Vendor specific (0x1f) and reserved (0x0e) MII registers.
888 */
889 mdio_write(ioaddr, 0x1f, 0x0000);
890 mdio_write(ioaddr, 0x0e, 0x0000);
891 }
892
893 tp->phy_auto_nego_reg = auto_nego;
894 tp->phy_1000_ctrl_reg = giga_ctrl;
895
896 mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
897 mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
898 mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
899 return 0;
900 }
901
902 static int rtl8169_set_speed(struct net_device *dev,
903 u8 autoneg, u16 speed, u8 duplex)
904 {
905 struct rtl8169_private *tp = netdev_priv(dev);
906 int ret;
907
908 ret = tp->set_speed(dev, autoneg, speed, duplex);
909
910 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
911 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
912
913 return ret;
914 }
915
916 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
917 {
918 struct rtl8169_private *tp = netdev_priv(dev);
919 unsigned long flags;
920 int ret;
921
922 spin_lock_irqsave(&tp->lock, flags);
923 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
924 spin_unlock_irqrestore(&tp->lock, flags);
925
926 return ret;
927 }
928
929 static u32 rtl8169_get_rx_csum(struct net_device *dev)
930 {
931 struct rtl8169_private *tp = netdev_priv(dev);
932
933 return tp->cp_cmd & RxChkSum;
934 }
935
936 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
937 {
938 struct rtl8169_private *tp = netdev_priv(dev);
939 void __iomem *ioaddr = tp->mmio_addr;
940 unsigned long flags;
941
942 spin_lock_irqsave(&tp->lock, flags);
943
944 if (data)
945 tp->cp_cmd |= RxChkSum;
946 else
947 tp->cp_cmd &= ~RxChkSum;
948
949 RTL_W16(CPlusCmd, tp->cp_cmd);
950 RTL_R16(CPlusCmd);
951
952 spin_unlock_irqrestore(&tp->lock, flags);
953
954 return 0;
955 }
956
957 #ifdef CONFIG_R8169_VLAN
958
959 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
960 struct sk_buff *skb)
961 {
962 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
963 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
964 }
965
966 static void rtl8169_vlan_rx_register(struct net_device *dev,
967 struct vlan_group *grp)
968 {
969 struct rtl8169_private *tp = netdev_priv(dev);
970 void __iomem *ioaddr = tp->mmio_addr;
971 unsigned long flags;
972
973 spin_lock_irqsave(&tp->lock, flags);
974 tp->vlgrp = grp;
975 if (tp->vlgrp)
976 tp->cp_cmd |= RxVlan;
977 else
978 tp->cp_cmd &= ~RxVlan;
979 RTL_W16(CPlusCmd, tp->cp_cmd);
980 RTL_R16(CPlusCmd);
981 spin_unlock_irqrestore(&tp->lock, flags);
982 }
983
984 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
985 struct sk_buff *skb)
986 {
987 u32 opts2 = le32_to_cpu(desc->opts2);
988 struct vlan_group *vlgrp = tp->vlgrp;
989 int ret;
990
991 if (vlgrp && (opts2 & RxVlanTag)) {
992 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
993 ret = 0;
994 } else
995 ret = -1;
996 desc->opts2 = 0;
997 return ret;
998 }
999
1000 #else /* !CONFIG_R8169_VLAN */
1001
1002 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
1003 struct sk_buff *skb)
1004 {
1005 return 0;
1006 }
1007
1008 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1009 struct sk_buff *skb)
1010 {
1011 return -1;
1012 }
1013
1014 #endif
1015
1016 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
1017 {
1018 struct rtl8169_private *tp = netdev_priv(dev);
1019 void __iomem *ioaddr = tp->mmio_addr;
1020 u32 status;
1021
1022 cmd->supported =
1023 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1024 cmd->port = PORT_FIBRE;
1025 cmd->transceiver = XCVR_INTERNAL;
1026
1027 status = RTL_R32(TBICSR);
1028 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
1029 cmd->autoneg = !!(status & TBINwEnable);
1030
1031 cmd->speed = SPEED_1000;
1032 cmd->duplex = DUPLEX_FULL; /* Always set */
1033
1034 return 0;
1035 }
1036
1037 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1038 {
1039 struct rtl8169_private *tp = netdev_priv(dev);
1040
1041 return mii_ethtool_gset(&tp->mii, cmd);
1042 }
1043
1044 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1045 {
1046 struct rtl8169_private *tp = netdev_priv(dev);
1047 unsigned long flags;
1048 int rc;
1049
1050 spin_lock_irqsave(&tp->lock, flags);
1051
1052 rc = tp->get_settings(dev, cmd);
1053
1054 spin_unlock_irqrestore(&tp->lock, flags);
1055 return rc;
1056 }
1057
1058 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1059 void *p)
1060 {
1061 struct rtl8169_private *tp = netdev_priv(dev);
1062 unsigned long flags;
1063
1064 if (regs->len > R8169_REGS_SIZE)
1065 regs->len = R8169_REGS_SIZE;
1066
1067 spin_lock_irqsave(&tp->lock, flags);
1068 memcpy_fromio(p, tp->mmio_addr, regs->len);
1069 spin_unlock_irqrestore(&tp->lock, flags);
1070 }
1071
1072 static u32 rtl8169_get_msglevel(struct net_device *dev)
1073 {
1074 struct rtl8169_private *tp = netdev_priv(dev);
1075
1076 return tp->msg_enable;
1077 }
1078
1079 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1080 {
1081 struct rtl8169_private *tp = netdev_priv(dev);
1082
1083 tp->msg_enable = value;
1084 }
1085
1086 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1087 "tx_packets",
1088 "rx_packets",
1089 "tx_errors",
1090 "rx_errors",
1091 "rx_missed",
1092 "align_errors",
1093 "tx_single_collisions",
1094 "tx_multi_collisions",
1095 "unicast",
1096 "broadcast",
1097 "multicast",
1098 "tx_aborted",
1099 "tx_underrun",
1100 };
1101
1102 struct rtl8169_counters {
1103 __le64 tx_packets;
1104 __le64 rx_packets;
1105 __le64 tx_errors;
1106 __le32 rx_errors;
1107 __le16 rx_missed;
1108 __le16 align_errors;
1109 __le32 tx_one_collision;
1110 __le32 tx_multi_collision;
1111 __le64 rx_unicast;
1112 __le64 rx_broadcast;
1113 __le32 rx_multicast;
1114 __le16 tx_aborted;
1115 __le16 tx_underun;
1116 };
1117
1118 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1119 {
1120 switch (sset) {
1121 case ETH_SS_STATS:
1122 return ARRAY_SIZE(rtl8169_gstrings);
1123 default:
1124 return -EOPNOTSUPP;
1125 }
1126 }
1127
1128 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1129 struct ethtool_stats *stats, u64 *data)
1130 {
1131 struct rtl8169_private *tp = netdev_priv(dev);
1132 void __iomem *ioaddr = tp->mmio_addr;
1133 struct rtl8169_counters *counters;
1134 dma_addr_t paddr;
1135 u32 cmd;
1136
1137 ASSERT_RTNL();
1138
1139 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1140 if (!counters)
1141 return;
1142
1143 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1144 cmd = (u64)paddr & DMA_32BIT_MASK;
1145 RTL_W32(CounterAddrLow, cmd);
1146 RTL_W32(CounterAddrLow, cmd | CounterDump);
1147
1148 while (RTL_R32(CounterAddrLow) & CounterDump) {
1149 if (msleep_interruptible(1))
1150 break;
1151 }
1152
1153 RTL_W32(CounterAddrLow, 0);
1154 RTL_W32(CounterAddrHigh, 0);
1155
1156 data[0] = le64_to_cpu(counters->tx_packets);
1157 data[1] = le64_to_cpu(counters->rx_packets);
1158 data[2] = le64_to_cpu(counters->tx_errors);
1159 data[3] = le32_to_cpu(counters->rx_errors);
1160 data[4] = le16_to_cpu(counters->rx_missed);
1161 data[5] = le16_to_cpu(counters->align_errors);
1162 data[6] = le32_to_cpu(counters->tx_one_collision);
1163 data[7] = le32_to_cpu(counters->tx_multi_collision);
1164 data[8] = le64_to_cpu(counters->rx_unicast);
1165 data[9] = le64_to_cpu(counters->rx_broadcast);
1166 data[10] = le32_to_cpu(counters->rx_multicast);
1167 data[11] = le16_to_cpu(counters->tx_aborted);
1168 data[12] = le16_to_cpu(counters->tx_underun);
1169
1170 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1171 }
1172
1173 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1174 {
1175 switch(stringset) {
1176 case ETH_SS_STATS:
1177 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1178 break;
1179 }
1180 }
1181
1182 static const struct ethtool_ops rtl8169_ethtool_ops = {
1183 .get_drvinfo = rtl8169_get_drvinfo,
1184 .get_regs_len = rtl8169_get_regs_len,
1185 .get_link = ethtool_op_get_link,
1186 .get_settings = rtl8169_get_settings,
1187 .set_settings = rtl8169_set_settings,
1188 .get_msglevel = rtl8169_get_msglevel,
1189 .set_msglevel = rtl8169_set_msglevel,
1190 .get_rx_csum = rtl8169_get_rx_csum,
1191 .set_rx_csum = rtl8169_set_rx_csum,
1192 .set_tx_csum = ethtool_op_set_tx_csum,
1193 .set_sg = ethtool_op_set_sg,
1194 .set_tso = ethtool_op_set_tso,
1195 .get_regs = rtl8169_get_regs,
1196 .get_wol = rtl8169_get_wol,
1197 .set_wol = rtl8169_set_wol,
1198 .get_strings = rtl8169_get_strings,
1199 .get_sset_count = rtl8169_get_sset_count,
1200 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1201 };
1202
1203 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1204 int bitnum, int bitval)
1205 {
1206 int val;
1207
1208 val = mdio_read(ioaddr, reg);
1209 val = (bitval == 1) ?
1210 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1211 mdio_write(ioaddr, reg, val & 0xffff);
1212 }
1213
1214 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1215 void __iomem *ioaddr)
1216 {
1217 /*
1218 * The driver currently handles the 8168Bf and the 8168Be identically
1219 * but they can be identified more specifically through the test below
1220 * if needed:
1221 *
1222 * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1223 *
1224 * Same thing for the 8101Eb and the 8101Ec:
1225 *
1226 * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1227 */
1228 const struct {
1229 u32 mask;
1230 u32 val;
1231 int mac_version;
1232 } mac_info[] = {
1233 /* 8168D family. */
1234 { 0x7c800000, 0x28000000, RTL_GIGA_MAC_VER_25 },
1235
1236 /* 8168C family. */
1237 { 0x7cf00000, 0x3ca00000, RTL_GIGA_MAC_VER_24 },
1238 { 0x7cf00000, 0x3c900000, RTL_GIGA_MAC_VER_23 },
1239 { 0x7cf00000, 0x3c800000, RTL_GIGA_MAC_VER_18 },
1240 { 0x7c800000, 0x3c800000, RTL_GIGA_MAC_VER_24 },
1241 { 0x7cf00000, 0x3c000000, RTL_GIGA_MAC_VER_19 },
1242 { 0x7cf00000, 0x3c200000, RTL_GIGA_MAC_VER_20 },
1243 { 0x7cf00000, 0x3c300000, RTL_GIGA_MAC_VER_21 },
1244 { 0x7cf00000, 0x3c400000, RTL_GIGA_MAC_VER_22 },
1245 { 0x7c800000, 0x3c000000, RTL_GIGA_MAC_VER_22 },
1246
1247 /* 8168B family. */
1248 { 0x7cf00000, 0x38000000, RTL_GIGA_MAC_VER_12 },
1249 { 0x7cf00000, 0x38500000, RTL_GIGA_MAC_VER_17 },
1250 { 0x7c800000, 0x38000000, RTL_GIGA_MAC_VER_17 },
1251 { 0x7c800000, 0x30000000, RTL_GIGA_MAC_VER_11 },
1252
1253 /* 8101 family. */
1254 { 0x7cf00000, 0x34a00000, RTL_GIGA_MAC_VER_09 },
1255 { 0x7cf00000, 0x24a00000, RTL_GIGA_MAC_VER_09 },
1256 { 0x7cf00000, 0x34900000, RTL_GIGA_MAC_VER_08 },
1257 { 0x7cf00000, 0x24900000, RTL_GIGA_MAC_VER_08 },
1258 { 0x7cf00000, 0x34800000, RTL_GIGA_MAC_VER_07 },
1259 { 0x7cf00000, 0x24800000, RTL_GIGA_MAC_VER_07 },
1260 { 0x7cf00000, 0x34000000, RTL_GIGA_MAC_VER_13 },
1261 { 0x7cf00000, 0x34300000, RTL_GIGA_MAC_VER_10 },
1262 { 0x7cf00000, 0x34200000, RTL_GIGA_MAC_VER_16 },
1263 { 0x7c800000, 0x34800000, RTL_GIGA_MAC_VER_09 },
1264 { 0x7c800000, 0x24800000, RTL_GIGA_MAC_VER_09 },
1265 { 0x7c800000, 0x34000000, RTL_GIGA_MAC_VER_16 },
1266 /* FIXME: where did these entries come from ? -- FR */
1267 { 0xfc800000, 0x38800000, RTL_GIGA_MAC_VER_15 },
1268 { 0xfc800000, 0x30800000, RTL_GIGA_MAC_VER_14 },
1269
1270 /* 8110 family. */
1271 { 0xfc800000, 0x98000000, RTL_GIGA_MAC_VER_06 },
1272 { 0xfc800000, 0x18000000, RTL_GIGA_MAC_VER_05 },
1273 { 0xfc800000, 0x10000000, RTL_GIGA_MAC_VER_04 },
1274 { 0xfc800000, 0x04000000, RTL_GIGA_MAC_VER_03 },
1275 { 0xfc800000, 0x00800000, RTL_GIGA_MAC_VER_02 },
1276 { 0xfc800000, 0x00000000, RTL_GIGA_MAC_VER_01 },
1277
1278 { 0x00000000, 0x00000000, RTL_GIGA_MAC_VER_01 } /* Catch-all */
1279 }, *p = mac_info;
1280 u32 reg;
1281
1282 reg = RTL_R32(TxConfig);
1283 while ((reg & p->mask) != p->val)
1284 p++;
1285 tp->mac_version = p->mac_version;
1286
1287 if (p->mask == 0x00000000) {
1288 struct pci_dev *pdev = tp->pci_dev;
1289
1290 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1291 }
1292 }
1293
1294 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1295 {
1296 dprintk("mac_version = 0x%02x\n", tp->mac_version);
1297 }
1298
1299 struct phy_reg {
1300 u16 reg;
1301 u16 val;
1302 };
1303
1304 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1305 {
1306 while (len-- > 0) {
1307 mdio_write(ioaddr, regs->reg, regs->val);
1308 regs++;
1309 }
1310 }
1311
1312 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1313 {
1314 struct {
1315 u16 regs[5]; /* Beware of bit-sign propagation */
1316 } phy_magic[5] = { {
1317 { 0x0000, //w 4 15 12 0
1318 0x00a1, //w 3 15 0 00a1
1319 0x0008, //w 2 15 0 0008
1320 0x1020, //w 1 15 0 1020
1321 0x1000 } },{ //w 0 15 0 1000
1322 { 0x7000, //w 4 15 12 7
1323 0xff41, //w 3 15 0 ff41
1324 0xde60, //w 2 15 0 de60
1325 0x0140, //w 1 15 0 0140
1326 0x0077 } },{ //w 0 15 0 0077
1327 { 0xa000, //w 4 15 12 a
1328 0xdf01, //w 3 15 0 df01
1329 0xdf20, //w 2 15 0 df20
1330 0xff95, //w 1 15 0 ff95
1331 0xfa00 } },{ //w 0 15 0 fa00
1332 { 0xb000, //w 4 15 12 b
1333 0xff41, //w 3 15 0 ff41
1334 0xde20, //w 2 15 0 de20
1335 0x0140, //w 1 15 0 0140
1336 0x00bb } },{ //w 0 15 0 00bb
1337 { 0xf000, //w 4 15 12 f
1338 0xdf01, //w 3 15 0 df01
1339 0xdf20, //w 2 15 0 df20
1340 0xff95, //w 1 15 0 ff95
1341 0xbf00 } //w 0 15 0 bf00
1342 }
1343 }, *p = phy_magic;
1344 unsigned int i;
1345
1346 mdio_write(ioaddr, 0x1f, 0x0001); //w 31 2 0 1
1347 mdio_write(ioaddr, 0x15, 0x1000); //w 21 15 0 1000
1348 mdio_write(ioaddr, 0x18, 0x65c7); //w 24 15 0 65c7
1349 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1350
1351 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1352 int val, pos = 4;
1353
1354 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1355 mdio_write(ioaddr, pos, val);
1356 while (--pos >= 0)
1357 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1358 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1359 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1360 }
1361 mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1362 }
1363
1364 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1365 {
1366 struct phy_reg phy_reg_init[] = {
1367 { 0x1f, 0x0002 },
1368 { 0x01, 0x90d0 },
1369 { 0x1f, 0x0000 }
1370 };
1371
1372 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1373 }
1374
1375 static void rtl8168bb_hw_phy_config(void __iomem *ioaddr)
1376 {
1377 struct phy_reg phy_reg_init[] = {
1378 { 0x10, 0xf41b },
1379 { 0x1f, 0x0000 }
1380 };
1381
1382 mdio_write(ioaddr, 0x1f, 0x0001);
1383 mdio_patch(ioaddr, 0x16, 1 << 0);
1384
1385 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1386 }
1387
1388 static void rtl8168bef_hw_phy_config(void __iomem *ioaddr)
1389 {
1390 struct phy_reg phy_reg_init[] = {
1391 { 0x1f, 0x0001 },
1392 { 0x10, 0xf41b },
1393 { 0x1f, 0x0000 }
1394 };
1395
1396 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1397 }
1398
1399 static void rtl8168cp_1_hw_phy_config(void __iomem *ioaddr)
1400 {
1401 struct phy_reg phy_reg_init[] = {
1402 { 0x1f, 0x0000 },
1403 { 0x1d, 0x0f00 },
1404 { 0x1f, 0x0002 },
1405 { 0x0c, 0x1ec8 },
1406 { 0x1f, 0x0000 }
1407 };
1408
1409 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1410 }
1411
1412 static void rtl8168cp_2_hw_phy_config(void __iomem *ioaddr)
1413 {
1414 struct phy_reg phy_reg_init[] = {
1415 { 0x1f, 0x0001 },
1416 { 0x1d, 0x3d98 },
1417 { 0x1f, 0x0000 }
1418 };
1419
1420 mdio_write(ioaddr, 0x1f, 0x0000);
1421 mdio_patch(ioaddr, 0x14, 1 << 5);
1422 mdio_patch(ioaddr, 0x0d, 1 << 5);
1423
1424 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1425 }
1426
1427 static void rtl8168c_1_hw_phy_config(void __iomem *ioaddr)
1428 {
1429 struct phy_reg phy_reg_init[] = {
1430 { 0x1f, 0x0001 },
1431 { 0x12, 0x2300 },
1432 { 0x1f, 0x0002 },
1433 { 0x00, 0x88d4 },
1434 { 0x01, 0x82b1 },
1435 { 0x03, 0x7002 },
1436 { 0x08, 0x9e30 },
1437 { 0x09, 0x01f0 },
1438 { 0x0a, 0x5500 },
1439 { 0x0c, 0x00c8 },
1440 { 0x1f, 0x0003 },
1441 { 0x12, 0xc096 },
1442 { 0x16, 0x000a },
1443 { 0x1f, 0x0000 },
1444 { 0x1f, 0x0000 },
1445 { 0x09, 0x2000 },
1446 { 0x09, 0x0000 }
1447 };
1448
1449 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1450
1451 mdio_patch(ioaddr, 0x14, 1 << 5);
1452 mdio_patch(ioaddr, 0x0d, 1 << 5);
1453 mdio_write(ioaddr, 0x1f, 0x0000);
1454 }
1455
1456 static void rtl8168c_2_hw_phy_config(void __iomem *ioaddr)
1457 {
1458 struct phy_reg phy_reg_init[] = {
1459 { 0x1f, 0x0001 },
1460 { 0x12, 0x2300 },
1461 { 0x03, 0x802f },
1462 { 0x02, 0x4f02 },
1463 { 0x01, 0x0409 },
1464 { 0x00, 0xf099 },
1465 { 0x04, 0x9800 },
1466 { 0x04, 0x9000 },
1467 { 0x1d, 0x3d98 },
1468 { 0x1f, 0x0002 },
1469 { 0x0c, 0x7eb8 },
1470 { 0x06, 0x0761 },
1471 { 0x1f, 0x0003 },
1472 { 0x16, 0x0f0a },
1473 { 0x1f, 0x0000 }
1474 };
1475
1476 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1477
1478 mdio_patch(ioaddr, 0x16, 1 << 0);
1479 mdio_patch(ioaddr, 0x14, 1 << 5);
1480 mdio_patch(ioaddr, 0x0d, 1 << 5);
1481 mdio_write(ioaddr, 0x1f, 0x0000);
1482 }
1483
1484 static void rtl8168c_3_hw_phy_config(void __iomem *ioaddr)
1485 {
1486 struct phy_reg phy_reg_init[] = {
1487 { 0x1f, 0x0001 },
1488 { 0x12, 0x2300 },
1489 { 0x1d, 0x3d98 },
1490 { 0x1f, 0x0002 },
1491 { 0x0c, 0x7eb8 },
1492 { 0x06, 0x5461 },
1493 { 0x1f, 0x0003 },
1494 { 0x16, 0x0f0a },
1495 { 0x1f, 0x0000 }
1496 };
1497
1498 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1499
1500 mdio_patch(ioaddr, 0x16, 1 << 0);
1501 mdio_patch(ioaddr, 0x14, 1 << 5);
1502 mdio_patch(ioaddr, 0x0d, 1 << 5);
1503 mdio_write(ioaddr, 0x1f, 0x0000);
1504 }
1505
1506 static void rtl8168c_4_hw_phy_config(void __iomem *ioaddr)
1507 {
1508 rtl8168c_3_hw_phy_config(ioaddr);
1509 }
1510
1511 static void rtl8168d_hw_phy_config(void __iomem *ioaddr)
1512 {
1513 struct phy_reg phy_reg_init_0[] = {
1514 { 0x1f, 0x0001 },
1515 { 0x09, 0x2770 },
1516 { 0x08, 0x04d0 },
1517 { 0x0b, 0xad15 },
1518 { 0x0c, 0x5bf0 },
1519 { 0x1c, 0xf101 },
1520 { 0x1f, 0x0003 },
1521 { 0x14, 0x94d7 },
1522 { 0x12, 0xf4d6 },
1523 { 0x09, 0xca0f },
1524 { 0x1f, 0x0002 },
1525 { 0x0b, 0x0b10 },
1526 { 0x0c, 0xd1f7 },
1527 { 0x1f, 0x0002 },
1528 { 0x06, 0x5461 },
1529 { 0x1f, 0x0002 },
1530 { 0x05, 0x6662 },
1531 { 0x1f, 0x0000 },
1532 { 0x14, 0x0060 },
1533 { 0x1f, 0x0000 },
1534 { 0x0d, 0xf8a0 },
1535 { 0x1f, 0x0005 },
1536 { 0x05, 0xffc2 }
1537 };
1538
1539 rtl_phy_write(ioaddr, phy_reg_init_0, ARRAY_SIZE(phy_reg_init_0));
1540
1541 if (mdio_read(ioaddr, 0x06) == 0xc400) {
1542 struct phy_reg phy_reg_init_1[] = {
1543 { 0x1f, 0x0005 },
1544 { 0x01, 0x0300 },
1545 { 0x1f, 0x0000 },
1546 { 0x11, 0x401c },
1547 { 0x16, 0x4100 },
1548 { 0x1f, 0x0005 },
1549 { 0x07, 0x0010 },
1550 { 0x05, 0x83dc },
1551 { 0x06, 0x087d },
1552 { 0x05, 0x8300 },
1553 { 0x06, 0x0101 },
1554 { 0x06, 0x05f8 },
1555 { 0x06, 0xf9fa },
1556 { 0x06, 0xfbef },
1557 { 0x06, 0x79e2 },
1558 { 0x06, 0x835f },
1559 { 0x06, 0xe0f8 },
1560 { 0x06, 0x9ae1 },
1561 { 0x06, 0xf89b },
1562 { 0x06, 0xef31 },
1563 { 0x06, 0x3b65 },
1564 { 0x06, 0xaa07 },
1565 { 0x06, 0x81e4 },
1566 { 0x06, 0xf89a },
1567 { 0x06, 0xe5f8 },
1568 { 0x06, 0x9baf },
1569 { 0x06, 0x06ae },
1570 { 0x05, 0x83dc },
1571 { 0x06, 0x8300 },
1572 };
1573
1574 rtl_phy_write(ioaddr, phy_reg_init_1,
1575 ARRAY_SIZE(phy_reg_init_1));
1576 }
1577
1578 mdio_write(ioaddr, 0x1f, 0x0000);
1579 }
1580
1581 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1582 {
1583 struct phy_reg phy_reg_init[] = {
1584 { 0x1f, 0x0003 },
1585 { 0x08, 0x441d },
1586 { 0x01, 0x9100 },
1587 { 0x1f, 0x0000 }
1588 };
1589
1590 mdio_write(ioaddr, 0x1f, 0x0000);
1591 mdio_patch(ioaddr, 0x11, 1 << 12);
1592 mdio_patch(ioaddr, 0x19, 1 << 13);
1593
1594 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1595 }
1596
1597 static void rtl_hw_phy_config(struct net_device *dev)
1598 {
1599 struct rtl8169_private *tp = netdev_priv(dev);
1600 void __iomem *ioaddr = tp->mmio_addr;
1601
1602 rtl8169_print_mac_version(tp);
1603
1604 switch (tp->mac_version) {
1605 case RTL_GIGA_MAC_VER_01:
1606 break;
1607 case RTL_GIGA_MAC_VER_02:
1608 case RTL_GIGA_MAC_VER_03:
1609 rtl8169s_hw_phy_config(ioaddr);
1610 break;
1611 case RTL_GIGA_MAC_VER_04:
1612 rtl8169sb_hw_phy_config(ioaddr);
1613 break;
1614 case RTL_GIGA_MAC_VER_07:
1615 case RTL_GIGA_MAC_VER_08:
1616 case RTL_GIGA_MAC_VER_09:
1617 rtl8102e_hw_phy_config(ioaddr);
1618 break;
1619 case RTL_GIGA_MAC_VER_11:
1620 rtl8168bb_hw_phy_config(ioaddr);
1621 break;
1622 case RTL_GIGA_MAC_VER_12:
1623 rtl8168bef_hw_phy_config(ioaddr);
1624 break;
1625 case RTL_GIGA_MAC_VER_17:
1626 rtl8168bef_hw_phy_config(ioaddr);
1627 break;
1628 case RTL_GIGA_MAC_VER_18:
1629 rtl8168cp_1_hw_phy_config(ioaddr);
1630 break;
1631 case RTL_GIGA_MAC_VER_19:
1632 rtl8168c_1_hw_phy_config(ioaddr);
1633 break;
1634 case RTL_GIGA_MAC_VER_20:
1635 rtl8168c_2_hw_phy_config(ioaddr);
1636 break;
1637 case RTL_GIGA_MAC_VER_21:
1638 rtl8168c_3_hw_phy_config(ioaddr);
1639 break;
1640 case RTL_GIGA_MAC_VER_22:
1641 rtl8168c_4_hw_phy_config(ioaddr);
1642 break;
1643 case RTL_GIGA_MAC_VER_23:
1644 case RTL_GIGA_MAC_VER_24:
1645 rtl8168cp_2_hw_phy_config(ioaddr);
1646 break;
1647 case RTL_GIGA_MAC_VER_25:
1648 rtl8168d_hw_phy_config(ioaddr);
1649 break;
1650
1651 default:
1652 break;
1653 }
1654 }
1655
1656 static void rtl8169_phy_timer(unsigned long __opaque)
1657 {
1658 struct net_device *dev = (struct net_device *)__opaque;
1659 struct rtl8169_private *tp = netdev_priv(dev);
1660 struct timer_list *timer = &tp->timer;
1661 void __iomem *ioaddr = tp->mmio_addr;
1662 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1663
1664 assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1665
1666 if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1667 return;
1668
1669 spin_lock_irq(&tp->lock);
1670
1671 if (tp->phy_reset_pending(ioaddr)) {
1672 /*
1673 * A busy loop could burn quite a few cycles on nowadays CPU.
1674 * Let's delay the execution of the timer for a few ticks.
1675 */
1676 timeout = HZ/10;
1677 goto out_mod_timer;
1678 }
1679
1680 if (tp->link_ok(ioaddr))
1681 goto out_unlock;
1682
1683 if (netif_msg_link(tp))
1684 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1685
1686 tp->phy_reset_enable(ioaddr);
1687
1688 out_mod_timer:
1689 mod_timer(timer, jiffies + timeout);
1690 out_unlock:
1691 spin_unlock_irq(&tp->lock);
1692 }
1693
1694 static inline void rtl8169_delete_timer(struct net_device *dev)
1695 {
1696 struct rtl8169_private *tp = netdev_priv(dev);
1697 struct timer_list *timer = &tp->timer;
1698
1699 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1700 return;
1701
1702 del_timer_sync(timer);
1703 }
1704
1705 static inline void rtl8169_request_timer(struct net_device *dev)
1706 {
1707 struct rtl8169_private *tp = netdev_priv(dev);
1708 struct timer_list *timer = &tp->timer;
1709
1710 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1711 return;
1712
1713 mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1714 }
1715
1716 #ifdef CONFIG_NET_POLL_CONTROLLER
1717 /*
1718 * Polling 'interrupt' - used by things like netconsole to send skbs
1719 * without having to re-enable interrupts. It's not called while
1720 * the interrupt routine is executing.
1721 */
1722 static void rtl8169_netpoll(struct net_device *dev)
1723 {
1724 struct rtl8169_private *tp = netdev_priv(dev);
1725 struct pci_dev *pdev = tp->pci_dev;
1726
1727 disable_irq(pdev->irq);
1728 rtl8169_interrupt(pdev->irq, dev);
1729 enable_irq(pdev->irq);
1730 }
1731 #endif
1732
1733 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1734 void __iomem *ioaddr)
1735 {
1736 iounmap(ioaddr);
1737 pci_release_regions(pdev);
1738 pci_disable_device(pdev);
1739 free_netdev(dev);
1740 }
1741
1742 static void rtl8169_phy_reset(struct net_device *dev,
1743 struct rtl8169_private *tp)
1744 {
1745 void __iomem *ioaddr = tp->mmio_addr;
1746 unsigned int i;
1747
1748 tp->phy_reset_enable(ioaddr);
1749 for (i = 0; i < 100; i++) {
1750 if (!tp->phy_reset_pending(ioaddr))
1751 return;
1752 msleep(1);
1753 }
1754 if (netif_msg_link(tp))
1755 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1756 }
1757
1758 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1759 {
1760 void __iomem *ioaddr = tp->mmio_addr;
1761
1762 rtl_hw_phy_config(dev);
1763
1764 if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1765 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1766 RTL_W8(0x82, 0x01);
1767 }
1768
1769 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1770
1771 if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1772 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1773
1774 if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1775 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1776 RTL_W8(0x82, 0x01);
1777 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1778 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1779 }
1780
1781 rtl8169_phy_reset(dev, tp);
1782
1783 /*
1784 * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1785 * only 8101. Don't panic.
1786 */
1787 rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1788
1789 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1790 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1791 }
1792
1793 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1794 {
1795 void __iomem *ioaddr = tp->mmio_addr;
1796 u32 high;
1797 u32 low;
1798
1799 low = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1800 high = addr[4] | (addr[5] << 8);
1801
1802 spin_lock_irq(&tp->lock);
1803
1804 RTL_W8(Cfg9346, Cfg9346_Unlock);
1805 RTL_W32(MAC0, low);
1806 RTL_W32(MAC4, high);
1807 RTL_W8(Cfg9346, Cfg9346_Lock);
1808
1809 spin_unlock_irq(&tp->lock);
1810 }
1811
1812 static int rtl_set_mac_address(struct net_device *dev, void *p)
1813 {
1814 struct rtl8169_private *tp = netdev_priv(dev);
1815 struct sockaddr *addr = p;
1816
1817 if (!is_valid_ether_addr(addr->sa_data))
1818 return -EADDRNOTAVAIL;
1819
1820 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1821
1822 rtl_rar_set(tp, dev->dev_addr);
1823
1824 return 0;
1825 }
1826
1827 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1828 {
1829 struct rtl8169_private *tp = netdev_priv(dev);
1830 struct mii_ioctl_data *data = if_mii(ifr);
1831
1832 if (!netif_running(dev))
1833 return -ENODEV;
1834
1835 switch (cmd) {
1836 case SIOCGMIIPHY:
1837 data->phy_id = 32; /* Internal PHY */
1838 return 0;
1839
1840 case SIOCGMIIREG:
1841 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1842 return 0;
1843
1844 case SIOCSMIIREG:
1845 if (!capable(CAP_NET_ADMIN))
1846 return -EPERM;
1847 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1848 return 0;
1849 }
1850 return -EOPNOTSUPP;
1851 }
1852
1853 static const struct rtl_cfg_info {
1854 void (*hw_start)(struct net_device *);
1855 unsigned int region;
1856 unsigned int align;
1857 u16 intr_event;
1858 u16 napi_event;
1859 unsigned features;
1860 } rtl_cfg_infos [] = {
1861 [RTL_CFG_0] = {
1862 .hw_start = rtl_hw_start_8169,
1863 .region = 1,
1864 .align = 0,
1865 .intr_event = SYSErr | LinkChg | RxOverflow |
1866 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1867 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1868 .features = RTL_FEATURE_GMII
1869 },
1870 [RTL_CFG_1] = {
1871 .hw_start = rtl_hw_start_8168,
1872 .region = 2,
1873 .align = 8,
1874 .intr_event = SYSErr | LinkChg | RxOverflow |
1875 TxErr | TxOK | RxOK | RxErr,
1876 .napi_event = TxErr | TxOK | RxOK | RxOverflow,
1877 .features = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1878 },
1879 [RTL_CFG_2] = {
1880 .hw_start = rtl_hw_start_8101,
1881 .region = 2,
1882 .align = 8,
1883 .intr_event = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1884 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1885 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1886 .features = RTL_FEATURE_MSI
1887 }
1888 };
1889
1890 /* Cfg9346_Unlock assumed. */
1891 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1892 const struct rtl_cfg_info *cfg)
1893 {
1894 unsigned msi = 0;
1895 u8 cfg2;
1896
1897 cfg2 = RTL_R8(Config2) & ~MSIEnable;
1898 if (cfg->features & RTL_FEATURE_MSI) {
1899 if (pci_enable_msi(pdev)) {
1900 dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1901 } else {
1902 cfg2 |= MSIEnable;
1903 msi = RTL_FEATURE_MSI;
1904 }
1905 }
1906 RTL_W8(Config2, cfg2);
1907 return msi;
1908 }
1909
1910 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1911 {
1912 if (tp->features & RTL_FEATURE_MSI) {
1913 pci_disable_msi(pdev);
1914 tp->features &= ~RTL_FEATURE_MSI;
1915 }
1916 }
1917
1918 static int __devinit
1919 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1920 {
1921 const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1922 const unsigned int region = cfg->region;
1923 struct rtl8169_private *tp;
1924 struct mii_if_info *mii;
1925 struct net_device *dev;
1926 void __iomem *ioaddr;
1927 unsigned int i;
1928 int rc;
1929
1930 if (netif_msg_drv(&debug)) {
1931 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1932 MODULENAME, RTL8169_VERSION);
1933 }
1934
1935 dev = alloc_etherdev(sizeof (*tp));
1936 if (!dev) {
1937 if (netif_msg_drv(&debug))
1938 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1939 rc = -ENOMEM;
1940 goto out;
1941 }
1942
1943 SET_NETDEV_DEV(dev, &pdev->dev);
1944 tp = netdev_priv(dev);
1945 tp->dev = dev;
1946 tp->pci_dev = pdev;
1947 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1948
1949 mii = &tp->mii;
1950 mii->dev = dev;
1951 mii->mdio_read = rtl_mdio_read;
1952 mii->mdio_write = rtl_mdio_write;
1953 mii->phy_id_mask = 0x1f;
1954 mii->reg_num_mask = 0x1f;
1955 mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
1956
1957 /* enable device (incl. PCI PM wakeup and hotplug setup) */
1958 rc = pci_enable_device(pdev);
1959 if (rc < 0) {
1960 if (netif_msg_probe(tp))
1961 dev_err(&pdev->dev, "enable failure\n");
1962 goto err_out_free_dev_1;
1963 }
1964
1965 rc = pci_set_mwi(pdev);
1966 if (rc < 0)
1967 goto err_out_disable_2;
1968
1969 /* make sure PCI base addr 1 is MMIO */
1970 if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1971 if (netif_msg_probe(tp)) {
1972 dev_err(&pdev->dev,
1973 "region #%d not an MMIO resource, aborting\n",
1974 region);
1975 }
1976 rc = -ENODEV;
1977 goto err_out_mwi_3;
1978 }
1979
1980 /* check for weird/broken PCI region reporting */
1981 if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1982 if (netif_msg_probe(tp)) {
1983 dev_err(&pdev->dev,
1984 "Invalid PCI region size(s), aborting\n");
1985 }
1986 rc = -ENODEV;
1987 goto err_out_mwi_3;
1988 }
1989
1990 rc = pci_request_regions(pdev, MODULENAME);
1991 if (rc < 0) {
1992 if (netif_msg_probe(tp))
1993 dev_err(&pdev->dev, "could not request regions.\n");
1994 goto err_out_mwi_3;
1995 }
1996
1997 tp->cp_cmd = PCIMulRW | RxChkSum;
1998
1999 if ((sizeof(dma_addr_t) > 4) &&
2000 !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
2001 tp->cp_cmd |= PCIDAC;
2002 dev->features |= NETIF_F_HIGHDMA;
2003 } else {
2004 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2005 if (rc < 0) {
2006 if (netif_msg_probe(tp)) {
2007 dev_err(&pdev->dev,
2008 "DMA configuration failed.\n");
2009 }
2010 goto err_out_free_res_4;
2011 }
2012 }
2013
2014 pci_set_master(pdev);
2015
2016 /* ioremap MMIO region */
2017 ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
2018 if (!ioaddr) {
2019 if (netif_msg_probe(tp))
2020 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
2021 rc = -EIO;
2022 goto err_out_free_res_4;
2023 }
2024
2025 tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2026 if (!tp->pcie_cap && netif_msg_probe(tp))
2027 dev_info(&pdev->dev, "no PCI Express capability\n");
2028
2029 /* Unneeded ? Don't mess with Mrs. Murphy. */
2030 rtl8169_irq_mask_and_ack(ioaddr);
2031
2032 /* Soft reset the chip. */
2033 RTL_W8(ChipCmd, CmdReset);
2034
2035 /* Check that the chip has finished the reset. */
2036 for (i = 0; i < 100; i++) {
2037 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2038 break;
2039 msleep_interruptible(1);
2040 }
2041
2042 /* Identify chip attached to board */
2043 rtl8169_get_mac_version(tp, ioaddr);
2044
2045 rtl8169_print_mac_version(tp);
2046
2047 for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
2048 if (tp->mac_version == rtl_chip_info[i].mac_version)
2049 break;
2050 }
2051 if (i == ARRAY_SIZE(rtl_chip_info)) {
2052 /* Unknown chip: assume array element #0, original RTL-8169 */
2053 if (netif_msg_probe(tp)) {
2054 dev_printk(KERN_DEBUG, &pdev->dev,
2055 "unknown chip version, assuming %s\n",
2056 rtl_chip_info[0].name);
2057 }
2058 i = 0;
2059 }
2060 tp->chipset = i;
2061
2062 RTL_W8(Cfg9346, Cfg9346_Unlock);
2063 RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
2064 RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
2065 if ((RTL_R8(Config3) & (LinkUp | MagicPacket)) != 0)
2066 tp->features |= RTL_FEATURE_WOL;
2067 if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0)
2068 tp->features |= RTL_FEATURE_WOL;
2069 tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
2070 RTL_W8(Cfg9346, Cfg9346_Lock);
2071
2072 if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
2073 (RTL_R8(PHYstatus) & TBI_Enable)) {
2074 tp->set_speed = rtl8169_set_speed_tbi;
2075 tp->get_settings = rtl8169_gset_tbi;
2076 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
2077 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
2078 tp->link_ok = rtl8169_tbi_link_ok;
2079
2080 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
2081 } else {
2082 tp->set_speed = rtl8169_set_speed_xmii;
2083 tp->get_settings = rtl8169_gset_xmii;
2084 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
2085 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
2086 tp->link_ok = rtl8169_xmii_link_ok;
2087
2088 dev->do_ioctl = rtl8169_ioctl;
2089 }
2090
2091 spin_lock_init(&tp->lock);
2092
2093 tp->mmio_addr = ioaddr;
2094
2095 /* Get MAC address */
2096 for (i = 0; i < MAC_ADDR_LEN; i++)
2097 dev->dev_addr[i] = RTL_R8(MAC0 + i);
2098 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2099
2100 dev->open = rtl8169_open;
2101 dev->hard_start_xmit = rtl8169_start_xmit;
2102 dev->get_stats = rtl8169_get_stats;
2103 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
2104 dev->stop = rtl8169_close;
2105 dev->tx_timeout = rtl8169_tx_timeout;
2106 dev->set_multicast_list = rtl_set_rx_mode;
2107 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
2108 dev->irq = pdev->irq;
2109 dev->base_addr = (unsigned long) ioaddr;
2110 dev->change_mtu = rtl8169_change_mtu;
2111 dev->set_mac_address = rtl_set_mac_address;
2112
2113 netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
2114
2115 #ifdef CONFIG_R8169_VLAN
2116 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2117 dev->vlan_rx_register = rtl8169_vlan_rx_register;
2118 #endif
2119
2120 #ifdef CONFIG_NET_POLL_CONTROLLER
2121 dev->poll_controller = rtl8169_netpoll;
2122 #endif
2123
2124 tp->intr_mask = 0xffff;
2125 tp->align = cfg->align;
2126 tp->hw_start = cfg->hw_start;
2127 tp->intr_event = cfg->intr_event;
2128 tp->napi_event = cfg->napi_event;
2129
2130 init_timer(&tp->timer);
2131 tp->timer.data = (unsigned long) dev;
2132 tp->timer.function = rtl8169_phy_timer;
2133
2134 rc = register_netdev(dev);
2135 if (rc < 0)
2136 goto err_out_msi_5;
2137
2138 pci_set_drvdata(pdev, dev);
2139
2140 if (netif_msg_probe(tp)) {
2141 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
2142
2143 printk(KERN_INFO "%s: %s at 0x%lx, "
2144 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
2145 "XID %08x IRQ %d\n",
2146 dev->name,
2147 rtl_chip_info[tp->chipset].name,
2148 dev->base_addr,
2149 dev->dev_addr[0], dev->dev_addr[1],
2150 dev->dev_addr[2], dev->dev_addr[3],
2151 dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
2152 }
2153
2154 rtl8169_init_phy(dev, tp);
2155 device_set_wakeup_enable(&pdev->dev, tp->features & RTL_FEATURE_WOL);
2156
2157 out:
2158 return rc;
2159
2160 err_out_msi_5:
2161 rtl_disable_msi(pdev, tp);
2162 iounmap(ioaddr);
2163 err_out_free_res_4:
2164 pci_release_regions(pdev);
2165 err_out_mwi_3:
2166 pci_clear_mwi(pdev);
2167 err_out_disable_2:
2168 pci_disable_device(pdev);
2169 err_out_free_dev_1:
2170 free_netdev(dev);
2171 goto out;
2172 }
2173
2174 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
2175 {
2176 struct net_device *dev = pci_get_drvdata(pdev);
2177 struct rtl8169_private *tp = netdev_priv(dev);
2178
2179 flush_scheduled_work();
2180
2181 unregister_netdev(dev);
2182 rtl_disable_msi(pdev, tp);
2183 rtl8169_release_board(pdev, dev, tp->mmio_addr);
2184 pci_set_drvdata(pdev, NULL);
2185 }
2186
2187 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
2188 struct net_device *dev)
2189 {
2190 unsigned int mtu = dev->mtu;
2191
2192 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
2193 }
2194
2195 static int rtl8169_open(struct net_device *dev)
2196 {
2197 struct rtl8169_private *tp = netdev_priv(dev);
2198 struct pci_dev *pdev = tp->pci_dev;
2199 int retval = -ENOMEM;
2200
2201
2202 rtl8169_set_rxbufsize(tp, dev);
2203
2204 /*
2205 * Rx and Tx desscriptors needs 256 bytes alignment.
2206 * pci_alloc_consistent provides more.
2207 */
2208 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
2209 &tp->TxPhyAddr);
2210 if (!tp->TxDescArray)
2211 goto out;
2212
2213 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2214 &tp->RxPhyAddr);
2215 if (!tp->RxDescArray)
2216 goto err_free_tx_0;
2217
2218 retval = rtl8169_init_ring(dev);
2219 if (retval < 0)
2220 goto err_free_rx_1;
2221
2222 INIT_DELAYED_WORK(&tp->task, NULL);
2223
2224 smp_mb();
2225
2226 retval = request_irq(dev->irq, rtl8169_interrupt,
2227 (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2228 dev->name, dev);
2229 if (retval < 0)
2230 goto err_release_ring_2;
2231
2232 napi_enable(&tp->napi);
2233
2234 rtl_hw_start(dev);
2235
2236 rtl8169_request_timer(dev);
2237
2238 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2239 out:
2240 return retval;
2241
2242 err_release_ring_2:
2243 rtl8169_rx_clear(tp);
2244 err_free_rx_1:
2245 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2246 tp->RxPhyAddr);
2247 err_free_tx_0:
2248 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2249 tp->TxPhyAddr);
2250 goto out;
2251 }
2252
2253 static void rtl8169_hw_reset(void __iomem *ioaddr)
2254 {
2255 /* Disable interrupts */
2256 rtl8169_irq_mask_and_ack(ioaddr);
2257
2258 /* Reset the chipset */
2259 RTL_W8(ChipCmd, CmdReset);
2260
2261 /* PCI commit */
2262 RTL_R8(ChipCmd);
2263 }
2264
2265 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2266 {
2267 void __iomem *ioaddr = tp->mmio_addr;
2268 u32 cfg = rtl8169_rx_config;
2269
2270 cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2271 RTL_W32(RxConfig, cfg);
2272
2273 /* Set DMA burst size and Interframe Gap Time */
2274 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2275 (InterFrameGap << TxInterFrameGapShift));
2276 }
2277
2278 static void rtl_hw_start(struct net_device *dev)
2279 {
2280 struct rtl8169_private *tp = netdev_priv(dev);
2281 void __iomem *ioaddr = tp->mmio_addr;
2282 unsigned int i;
2283
2284 /* Soft reset the chip. */
2285 RTL_W8(ChipCmd, CmdReset);
2286
2287 /* Check that the chip has finished the reset. */
2288 for (i = 0; i < 100; i++) {
2289 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2290 break;
2291 msleep_interruptible(1);
2292 }
2293
2294 tp->hw_start(dev);
2295
2296 netif_start_queue(dev);
2297 }
2298
2299
2300 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2301 void __iomem *ioaddr)
2302 {
2303 /*
2304 * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2305 * register to be written before TxDescAddrLow to work.
2306 * Switching from MMIO to I/O access fixes the issue as well.
2307 */
2308 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2309 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
2310 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2311 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
2312 }
2313
2314 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2315 {
2316 u16 cmd;
2317
2318 cmd = RTL_R16(CPlusCmd);
2319 RTL_W16(CPlusCmd, cmd);
2320 return cmd;
2321 }
2322
2323 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2324 {
2325 /* Low hurts. Let's disable the filtering. */
2326 RTL_W16(RxMaxSize, 16383);
2327 }
2328
2329 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2330 {
2331 struct {
2332 u32 mac_version;
2333 u32 clk;
2334 u32 val;
2335 } cfg2_info [] = {
2336 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2337 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2338 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2339 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2340 }, *p = cfg2_info;
2341 unsigned int i;
2342 u32 clk;
2343
2344 clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2345 for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2346 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2347 RTL_W32(0x7c, p->val);
2348 break;
2349 }
2350 }
2351 }
2352
2353 static void rtl_hw_start_8169(struct net_device *dev)
2354 {
2355 struct rtl8169_private *tp = netdev_priv(dev);
2356 void __iomem *ioaddr = tp->mmio_addr;
2357 struct pci_dev *pdev = tp->pci_dev;
2358
2359 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2360 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2361 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2362 }
2363
2364 RTL_W8(Cfg9346, Cfg9346_Unlock);
2365 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2366 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2367 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2368 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2369 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2370
2371 RTL_W8(EarlyTxThres, EarlyTxThld);
2372
2373 rtl_set_rx_max_size(ioaddr);
2374
2375 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2376 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2377 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2378 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2379 rtl_set_rx_tx_config_registers(tp);
2380
2381 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2382
2383 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2384 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2385 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2386 "Bit-3 and bit-14 MUST be 1\n");
2387 tp->cp_cmd |= (1 << 14);
2388 }
2389
2390 RTL_W16(CPlusCmd, tp->cp_cmd);
2391
2392 rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2393
2394 /*
2395 * Undocumented corner. Supposedly:
2396 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2397 */
2398 RTL_W16(IntrMitigate, 0x0000);
2399
2400 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2401
2402 if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2403 (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2404 (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2405 (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2406 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2407 rtl_set_rx_tx_config_registers(tp);
2408 }
2409
2410 RTL_W8(Cfg9346, Cfg9346_Lock);
2411
2412 /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2413 RTL_R8(IntrMask);
2414
2415 RTL_W32(RxMissed, 0);
2416
2417 rtl_set_rx_mode(dev);
2418
2419 /* no early-rx interrupts */
2420 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2421
2422 /* Enable all known interrupts by setting the interrupt mask. */
2423 RTL_W16(IntrMask, tp->intr_event);
2424 }
2425
2426 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2427 {
2428 struct net_device *dev = pci_get_drvdata(pdev);
2429 struct rtl8169_private *tp = netdev_priv(dev);
2430 int cap = tp->pcie_cap;
2431
2432 if (cap) {
2433 u16 ctl;
2434
2435 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2436 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2437 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2438 }
2439 }
2440
2441 static void rtl_csi_access_enable(void __iomem *ioaddr)
2442 {
2443 u32 csi;
2444
2445 csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2446 rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2447 }
2448
2449 struct ephy_info {
2450 unsigned int offset;
2451 u16 mask;
2452 u16 bits;
2453 };
2454
2455 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2456 {
2457 u16 w;
2458
2459 while (len-- > 0) {
2460 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2461 rtl_ephy_write(ioaddr, e->offset, w);
2462 e++;
2463 }
2464 }
2465
2466 static void rtl_disable_clock_request(struct pci_dev *pdev)
2467 {
2468 struct net_device *dev = pci_get_drvdata(pdev);
2469 struct rtl8169_private *tp = netdev_priv(dev);
2470 int cap = tp->pcie_cap;
2471
2472 if (cap) {
2473 u16 ctl;
2474
2475 pci_read_config_word(pdev, cap + PCI_EXP_LNKCTL, &ctl);
2476 ctl &= ~PCI_EXP_LNKCTL_CLKREQ_EN;
2477 pci_write_config_word(pdev, cap + PCI_EXP_LNKCTL, ctl);
2478 }
2479 }
2480
2481 #define R8168_CPCMD_QUIRK_MASK (\
2482 EnableBist | \
2483 Mac_dbgo_oe | \
2484 Force_half_dup | \
2485 Force_rxflow_en | \
2486 Force_txflow_en | \
2487 Cxpl_dbg_sel | \
2488 ASF | \
2489 PktCntrDisable | \
2490 Mac_dbgo_sel)
2491
2492 static void rtl_hw_start_8168bb(void __iomem *ioaddr, struct pci_dev *pdev)
2493 {
2494 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2495
2496 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2497
2498 rtl_tx_performance_tweak(pdev,
2499 (0x5 << MAX_READ_REQUEST_SHIFT) | PCI_EXP_DEVCTL_NOSNOOP_EN);
2500 }
2501
2502 static void rtl_hw_start_8168bef(void __iomem *ioaddr, struct pci_dev *pdev)
2503 {
2504 rtl_hw_start_8168bb(ioaddr, pdev);
2505
2506 RTL_W8(EarlyTxThres, EarlyTxThld);
2507
2508 RTL_W8(Config4, RTL_R8(Config4) & ~(1 << 0));
2509 }
2510
2511 static void __rtl_hw_start_8168cp(void __iomem *ioaddr, struct pci_dev *pdev)
2512 {
2513 RTL_W8(Config1, RTL_R8(Config1) | Speed_down);
2514
2515 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2516
2517 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2518
2519 rtl_disable_clock_request(pdev);
2520
2521 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2522 }
2523
2524 static void rtl_hw_start_8168cp_1(void __iomem *ioaddr, struct pci_dev *pdev)
2525 {
2526 static struct ephy_info e_info_8168cp[] = {
2527 { 0x01, 0, 0x0001 },
2528 { 0x02, 0x0800, 0x1000 },
2529 { 0x03, 0, 0x0042 },
2530 { 0x06, 0x0080, 0x0000 },
2531 { 0x07, 0, 0x2000 }
2532 };
2533
2534 rtl_csi_access_enable(ioaddr);
2535
2536 rtl_ephy_init(ioaddr, e_info_8168cp, ARRAY_SIZE(e_info_8168cp));
2537
2538 __rtl_hw_start_8168cp(ioaddr, pdev);
2539 }
2540
2541 static void rtl_hw_start_8168cp_2(void __iomem *ioaddr, struct pci_dev *pdev)
2542 {
2543 rtl_csi_access_enable(ioaddr);
2544
2545 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2546
2547 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2548
2549 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2550 }
2551
2552 static void rtl_hw_start_8168cp_3(void __iomem *ioaddr, struct pci_dev *pdev)
2553 {
2554 rtl_csi_access_enable(ioaddr);
2555
2556 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2557
2558 /* Magic. */
2559 RTL_W8(DBG_REG, 0x20);
2560
2561 RTL_W8(EarlyTxThres, EarlyTxThld);
2562
2563 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2564
2565 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2566 }
2567
2568 static void rtl_hw_start_8168c_1(void __iomem *ioaddr, struct pci_dev *pdev)
2569 {
2570 static struct ephy_info e_info_8168c_1[] = {
2571 { 0x02, 0x0800, 0x1000 },
2572 { 0x03, 0, 0x0002 },
2573 { 0x06, 0x0080, 0x0000 }
2574 };
2575
2576 rtl_csi_access_enable(ioaddr);
2577
2578 RTL_W8(DBG_REG, 0x06 | FIX_NAK_1 | FIX_NAK_2);
2579
2580 rtl_ephy_init(ioaddr, e_info_8168c_1, ARRAY_SIZE(e_info_8168c_1));
2581
2582 __rtl_hw_start_8168cp(ioaddr, pdev);
2583 }
2584
2585 static void rtl_hw_start_8168c_2(void __iomem *ioaddr, struct pci_dev *pdev)
2586 {
2587 static struct ephy_info e_info_8168c_2[] = {
2588 { 0x01, 0, 0x0001 },
2589 { 0x03, 0x0400, 0x0220 }
2590 };
2591
2592 rtl_csi_access_enable(ioaddr);
2593
2594 rtl_ephy_init(ioaddr, e_info_8168c_2, ARRAY_SIZE(e_info_8168c_2));
2595
2596 __rtl_hw_start_8168cp(ioaddr, pdev);
2597 }
2598
2599 static void rtl_hw_start_8168c_3(void __iomem *ioaddr, struct pci_dev *pdev)
2600 {
2601 rtl_hw_start_8168c_2(ioaddr, pdev);
2602 }
2603
2604 static void rtl_hw_start_8168c_4(void __iomem *ioaddr, struct pci_dev *pdev)
2605 {
2606 rtl_csi_access_enable(ioaddr);
2607
2608 __rtl_hw_start_8168cp(ioaddr, pdev);
2609 }
2610
2611 static void rtl_hw_start_8168d(void __iomem *ioaddr, struct pci_dev *pdev)
2612 {
2613 rtl_csi_access_enable(ioaddr);
2614
2615 rtl_disable_clock_request(pdev);
2616
2617 RTL_W8(EarlyTxThres, EarlyTxThld);
2618
2619 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2620
2621 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2622 }
2623
2624 static void rtl_hw_start_8168(struct net_device *dev)
2625 {
2626 struct rtl8169_private *tp = netdev_priv(dev);
2627 void __iomem *ioaddr = tp->mmio_addr;
2628 struct pci_dev *pdev = tp->pci_dev;
2629
2630 RTL_W8(Cfg9346, Cfg9346_Unlock);
2631
2632 RTL_W8(EarlyTxThres, EarlyTxThld);
2633
2634 rtl_set_rx_max_size(ioaddr);
2635
2636 tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2637
2638 RTL_W16(CPlusCmd, tp->cp_cmd);
2639
2640 RTL_W16(IntrMitigate, 0x5151);
2641
2642 /* Work around for RxFIFO overflow. */
2643 if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2644 tp->intr_event |= RxFIFOOver | PCSTimeout;
2645 tp->intr_event &= ~RxOverflow;
2646 }
2647
2648 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2649
2650 rtl_set_rx_mode(dev);
2651
2652 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2653 (InterFrameGap << TxInterFrameGapShift));
2654
2655 RTL_R8(IntrMask);
2656
2657 switch (tp->mac_version) {
2658 case RTL_GIGA_MAC_VER_11:
2659 rtl_hw_start_8168bb(ioaddr, pdev);
2660 break;
2661
2662 case RTL_GIGA_MAC_VER_12:
2663 case RTL_GIGA_MAC_VER_17:
2664 rtl_hw_start_8168bef(ioaddr, pdev);
2665 break;
2666
2667 case RTL_GIGA_MAC_VER_18:
2668 rtl_hw_start_8168cp_1(ioaddr, pdev);
2669 break;
2670
2671 case RTL_GIGA_MAC_VER_19:
2672 rtl_hw_start_8168c_1(ioaddr, pdev);
2673 break;
2674
2675 case RTL_GIGA_MAC_VER_20:
2676 rtl_hw_start_8168c_2(ioaddr, pdev);
2677 break;
2678
2679 case RTL_GIGA_MAC_VER_21:
2680 rtl_hw_start_8168c_3(ioaddr, pdev);
2681 break;
2682
2683 case RTL_GIGA_MAC_VER_22:
2684 rtl_hw_start_8168c_4(ioaddr, pdev);
2685 break;
2686
2687 case RTL_GIGA_MAC_VER_23:
2688 rtl_hw_start_8168cp_2(ioaddr, pdev);
2689 break;
2690
2691 case RTL_GIGA_MAC_VER_24:
2692 rtl_hw_start_8168cp_3(ioaddr, pdev);
2693 break;
2694
2695 case RTL_GIGA_MAC_VER_25:
2696 rtl_hw_start_8168d(ioaddr, pdev);
2697 break;
2698
2699 default:
2700 printk(KERN_ERR PFX "%s: unknown chipset (mac_version = %d).\n",
2701 dev->name, tp->mac_version);
2702 break;
2703 }
2704
2705 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2706
2707 RTL_W8(Cfg9346, Cfg9346_Lock);
2708
2709 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2710
2711 RTL_W16(IntrMask, tp->intr_event);
2712 }
2713
2714 #define R810X_CPCMD_QUIRK_MASK (\
2715 EnableBist | \
2716 Mac_dbgo_oe | \
2717 Force_half_dup | \
2718 Force_half_dup | \
2719 Force_txflow_en | \
2720 Cxpl_dbg_sel | \
2721 ASF | \
2722 PktCntrDisable | \
2723 PCIDAC | \
2724 PCIMulRW)
2725
2726 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2727 {
2728 static struct ephy_info e_info_8102e_1[] = {
2729 { 0x01, 0, 0x6e65 },
2730 { 0x02, 0, 0x091f },
2731 { 0x03, 0, 0xc2f9 },
2732 { 0x06, 0, 0xafb5 },
2733 { 0x07, 0, 0x0e00 },
2734 { 0x19, 0, 0xec80 },
2735 { 0x01, 0, 0x2e65 },
2736 { 0x01, 0, 0x6e65 }
2737 };
2738 u8 cfg1;
2739
2740 rtl_csi_access_enable(ioaddr);
2741
2742 RTL_W8(DBG_REG, FIX_NAK_1);
2743
2744 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2745
2746 RTL_W8(Config1,
2747 LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2748 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2749
2750 cfg1 = RTL_R8(Config1);
2751 if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2752 RTL_W8(Config1, cfg1 & ~LEDS0);
2753
2754 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2755
2756 rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2757 }
2758
2759 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2760 {
2761 rtl_csi_access_enable(ioaddr);
2762
2763 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2764
2765 RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2766 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2767
2768 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2769 }
2770
2771 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2772 {
2773 rtl_hw_start_8102e_2(ioaddr, pdev);
2774
2775 rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2776 }
2777
2778 static void rtl_hw_start_8101(struct net_device *dev)
2779 {
2780 struct rtl8169_private *tp = netdev_priv(dev);
2781 void __iomem *ioaddr = tp->mmio_addr;
2782 struct pci_dev *pdev = tp->pci_dev;
2783
2784 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2785 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2786 int cap = tp->pcie_cap;
2787
2788 if (cap) {
2789 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2790 PCI_EXP_DEVCTL_NOSNOOP_EN);
2791 }
2792 }
2793
2794 switch (tp->mac_version) {
2795 case RTL_GIGA_MAC_VER_07:
2796 rtl_hw_start_8102e_1(ioaddr, pdev);
2797 break;
2798
2799 case RTL_GIGA_MAC_VER_08:
2800 rtl_hw_start_8102e_3(ioaddr, pdev);
2801 break;
2802
2803 case RTL_GIGA_MAC_VER_09:
2804 rtl_hw_start_8102e_2(ioaddr, pdev);
2805 break;
2806 }
2807
2808 RTL_W8(Cfg9346, Cfg9346_Unlock);
2809
2810 RTL_W8(EarlyTxThres, EarlyTxThld);
2811
2812 rtl_set_rx_max_size(ioaddr);
2813
2814 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2815
2816 RTL_W16(CPlusCmd, tp->cp_cmd);
2817
2818 RTL_W16(IntrMitigate, 0x0000);
2819
2820 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2821
2822 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2823 rtl_set_rx_tx_config_registers(tp);
2824
2825 RTL_W8(Cfg9346, Cfg9346_Lock);
2826
2827 RTL_R8(IntrMask);
2828
2829 rtl_set_rx_mode(dev);
2830
2831 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2832
2833 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2834
2835 RTL_W16(IntrMask, tp->intr_event);
2836 }
2837
2838 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2839 {
2840 struct rtl8169_private *tp = netdev_priv(dev);
2841 int ret = 0;
2842
2843 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2844 return -EINVAL;
2845
2846 dev->mtu = new_mtu;
2847
2848 if (!netif_running(dev))
2849 goto out;
2850
2851 rtl8169_down(dev);
2852
2853 rtl8169_set_rxbufsize(tp, dev);
2854
2855 ret = rtl8169_init_ring(dev);
2856 if (ret < 0)
2857 goto out;
2858
2859 napi_enable(&tp->napi);
2860
2861 rtl_hw_start(dev);
2862
2863 rtl8169_request_timer(dev);
2864
2865 out:
2866 return ret;
2867 }
2868
2869 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2870 {
2871 desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2872 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2873 }
2874
2875 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2876 struct sk_buff **sk_buff, struct RxDesc *desc)
2877 {
2878 struct pci_dev *pdev = tp->pci_dev;
2879
2880 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2881 PCI_DMA_FROMDEVICE);
2882 dev_kfree_skb(*sk_buff);
2883 *sk_buff = NULL;
2884 rtl8169_make_unusable_by_asic(desc);
2885 }
2886
2887 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2888 {
2889 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2890
2891 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2892 }
2893
2894 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2895 u32 rx_buf_sz)
2896 {
2897 desc->addr = cpu_to_le64(mapping);
2898 wmb();
2899 rtl8169_mark_to_asic(desc, rx_buf_sz);
2900 }
2901
2902 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2903 struct net_device *dev,
2904 struct RxDesc *desc, int rx_buf_sz,
2905 unsigned int align)
2906 {
2907 struct sk_buff *skb;
2908 dma_addr_t mapping;
2909 unsigned int pad;
2910
2911 pad = align ? align : NET_IP_ALIGN;
2912
2913 skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2914 if (!skb)
2915 goto err_out;
2916
2917 skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2918
2919 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2920 PCI_DMA_FROMDEVICE);
2921
2922 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2923 out:
2924 return skb;
2925
2926 err_out:
2927 rtl8169_make_unusable_by_asic(desc);
2928 goto out;
2929 }
2930
2931 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2932 {
2933 unsigned int i;
2934
2935 for (i = 0; i < NUM_RX_DESC; i++) {
2936 if (tp->Rx_skbuff[i]) {
2937 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2938 tp->RxDescArray + i);
2939 }
2940 }
2941 }
2942
2943 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2944 u32 start, u32 end)
2945 {
2946 u32 cur;
2947
2948 for (cur = start; end - cur != 0; cur++) {
2949 struct sk_buff *skb;
2950 unsigned int i = cur % NUM_RX_DESC;
2951
2952 WARN_ON((s32)(end - cur) < 0);
2953
2954 if (tp->Rx_skbuff[i])
2955 continue;
2956
2957 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2958 tp->RxDescArray + i,
2959 tp->rx_buf_sz, tp->align);
2960 if (!skb)
2961 break;
2962
2963 tp->Rx_skbuff[i] = skb;
2964 }
2965 return cur - start;
2966 }
2967
2968 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2969 {
2970 desc->opts1 |= cpu_to_le32(RingEnd);
2971 }
2972
2973 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2974 {
2975 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2976 }
2977
2978 static int rtl8169_init_ring(struct net_device *dev)
2979 {
2980 struct rtl8169_private *tp = netdev_priv(dev);
2981
2982 rtl8169_init_ring_indexes(tp);
2983
2984 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2985 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2986
2987 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2988 goto err_out;
2989
2990 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2991
2992 return 0;
2993
2994 err_out:
2995 rtl8169_rx_clear(tp);
2996 return -ENOMEM;
2997 }
2998
2999 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
3000 struct TxDesc *desc)
3001 {
3002 unsigned int len = tx_skb->len;
3003
3004 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
3005 desc->opts1 = 0x00;
3006 desc->opts2 = 0x00;
3007 desc->addr = 0x00;
3008 tx_skb->len = 0;
3009 }
3010
3011 static void rtl8169_tx_clear(struct rtl8169_private *tp)
3012 {
3013 unsigned int i;
3014
3015 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
3016 unsigned int entry = i % NUM_TX_DESC;
3017 struct ring_info *tx_skb = tp->tx_skb + entry;
3018 unsigned int len = tx_skb->len;
3019
3020 if (len) {
3021 struct sk_buff *skb = tx_skb->skb;
3022
3023 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
3024 tp->TxDescArray + entry);
3025 if (skb) {
3026 dev_kfree_skb(skb);
3027 tx_skb->skb = NULL;
3028 }
3029 tp->dev->stats.tx_dropped++;
3030 }
3031 }
3032 tp->cur_tx = tp->dirty_tx = 0;
3033 }
3034
3035 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
3036 {
3037 struct rtl8169_private *tp = netdev_priv(dev);
3038
3039 PREPARE_DELAYED_WORK(&tp->task, task);
3040 schedule_delayed_work(&tp->task, 4);
3041 }
3042
3043 static void rtl8169_wait_for_quiescence(struct net_device *dev)
3044 {
3045 struct rtl8169_private *tp = netdev_priv(dev);
3046 void __iomem *ioaddr = tp->mmio_addr;
3047
3048 synchronize_irq(dev->irq);
3049
3050 /* Wait for any pending NAPI task to complete */
3051 napi_disable(&tp->napi);
3052
3053 rtl8169_irq_mask_and_ack(ioaddr);
3054
3055 tp->intr_mask = 0xffff;
3056 RTL_W16(IntrMask, tp->intr_event);
3057 napi_enable(&tp->napi);
3058 }
3059
3060 static void rtl8169_reinit_task(struct work_struct *work)
3061 {
3062 struct rtl8169_private *tp =
3063 container_of(work, struct rtl8169_private, task.work);
3064 struct net_device *dev = tp->dev;
3065 int ret;
3066
3067 rtnl_lock();
3068
3069 if (!netif_running(dev))
3070 goto out_unlock;
3071
3072 rtl8169_wait_for_quiescence(dev);
3073 rtl8169_close(dev);
3074
3075 ret = rtl8169_open(dev);
3076 if (unlikely(ret < 0)) {
3077 if (net_ratelimit() && netif_msg_drv(tp)) {
3078 printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
3079 " Rescheduling.\n", dev->name, ret);
3080 }
3081 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3082 }
3083
3084 out_unlock:
3085 rtnl_unlock();
3086 }
3087
3088 static void rtl8169_reset_task(struct work_struct *work)
3089 {
3090 struct rtl8169_private *tp =
3091 container_of(work, struct rtl8169_private, task.work);
3092 struct net_device *dev = tp->dev;
3093
3094 rtnl_lock();
3095
3096 if (!netif_running(dev))
3097 goto out_unlock;
3098
3099 rtl8169_wait_for_quiescence(dev);
3100
3101 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
3102 rtl8169_tx_clear(tp);
3103
3104 if (tp->dirty_rx == tp->cur_rx) {
3105 rtl8169_init_ring_indexes(tp);
3106 rtl_hw_start(dev);
3107 netif_wake_queue(dev);
3108 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
3109 } else {
3110 if (net_ratelimit() && netif_msg_intr(tp)) {
3111 printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
3112 dev->name);
3113 }
3114 rtl8169_schedule_work(dev, rtl8169_reset_task);
3115 }
3116
3117 out_unlock:
3118 rtnl_unlock();
3119 }
3120
3121 static void rtl8169_tx_timeout(struct net_device *dev)
3122 {
3123 struct rtl8169_private *tp = netdev_priv(dev);
3124
3125 rtl8169_hw_reset(tp->mmio_addr);
3126
3127 /* Let's wait a bit while any (async) irq lands on */
3128 rtl8169_schedule_work(dev, rtl8169_reset_task);
3129 }
3130
3131 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
3132 u32 opts1)
3133 {
3134 struct skb_shared_info *info = skb_shinfo(skb);
3135 unsigned int cur_frag, entry;
3136 struct TxDesc * uninitialized_var(txd);
3137
3138 entry = tp->cur_tx;
3139 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
3140 skb_frag_t *frag = info->frags + cur_frag;
3141 dma_addr_t mapping;
3142 u32 status, len;
3143 void *addr;
3144
3145 entry = (entry + 1) % NUM_TX_DESC;
3146
3147 txd = tp->TxDescArray + entry;
3148 len = frag->size;
3149 addr = ((void *) page_address(frag->page)) + frag->page_offset;
3150 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
3151
3152 /* anti gcc 2.95.3 bugware (sic) */
3153 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3154
3155 txd->opts1 = cpu_to_le32(status);
3156 txd->addr = cpu_to_le64(mapping);
3157
3158 tp->tx_skb[entry].len = len;
3159 }
3160
3161 if (cur_frag) {
3162 tp->tx_skb[entry].skb = skb;
3163 txd->opts1 |= cpu_to_le32(LastFrag);
3164 }
3165
3166 return cur_frag;
3167 }
3168
3169 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
3170 {
3171 if (dev->features & NETIF_F_TSO) {
3172 u32 mss = skb_shinfo(skb)->gso_size;
3173
3174 if (mss)
3175 return LargeSend | ((mss & MSSMask) << MSSShift);
3176 }
3177 if (skb->ip_summed == CHECKSUM_PARTIAL) {
3178 const struct iphdr *ip = ip_hdr(skb);
3179
3180 if (ip->protocol == IPPROTO_TCP)
3181 return IPCS | TCPCS;
3182 else if (ip->protocol == IPPROTO_UDP)
3183 return IPCS | UDPCS;
3184 WARN_ON(1); /* we need a WARN() */
3185 }
3186 return 0;
3187 }
3188
3189 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
3190 {
3191 struct rtl8169_private *tp = netdev_priv(dev);
3192 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
3193 struct TxDesc *txd = tp->TxDescArray + entry;
3194 void __iomem *ioaddr = tp->mmio_addr;
3195 dma_addr_t mapping;
3196 u32 status, len;
3197 u32 opts1;
3198 int ret = NETDEV_TX_OK;
3199
3200 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
3201 if (netif_msg_drv(tp)) {
3202 printk(KERN_ERR
3203 "%s: BUG! Tx Ring full when queue awake!\n",
3204 dev->name);
3205 }
3206 goto err_stop;
3207 }
3208
3209 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
3210 goto err_stop;
3211
3212 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
3213
3214 frags = rtl8169_xmit_frags(tp, skb, opts1);
3215 if (frags) {
3216 len = skb_headlen(skb);
3217 opts1 |= FirstFrag;
3218 } else {
3219 len = skb->len;
3220
3221 if (unlikely(len < ETH_ZLEN)) {
3222 if (skb_padto(skb, ETH_ZLEN))
3223 goto err_update_stats;
3224 len = ETH_ZLEN;
3225 }
3226
3227 opts1 |= FirstFrag | LastFrag;
3228 tp->tx_skb[entry].skb = skb;
3229 }
3230
3231 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
3232
3233 tp->tx_skb[entry].len = len;
3234 txd->addr = cpu_to_le64(mapping);
3235 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
3236
3237 wmb();
3238
3239 /* anti gcc 2.95.3 bugware (sic) */
3240 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3241 txd->opts1 = cpu_to_le32(status);
3242
3243 dev->trans_start = jiffies;
3244
3245 tp->cur_tx += frags + 1;
3246
3247 smp_wmb();
3248
3249 RTL_W8(TxPoll, NPQ); /* set polling bit */
3250
3251 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
3252 netif_stop_queue(dev);
3253 smp_rmb();
3254 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
3255 netif_wake_queue(dev);
3256 }
3257
3258 out:
3259 return ret;
3260
3261 err_stop:
3262 netif_stop_queue(dev);
3263 ret = NETDEV_TX_BUSY;
3264 err_update_stats:
3265 dev->stats.tx_dropped++;
3266 goto out;
3267 }
3268
3269 static void rtl8169_pcierr_interrupt(struct net_device *dev)
3270 {
3271 struct rtl8169_private *tp = netdev_priv(dev);
3272 struct pci_dev *pdev = tp->pci_dev;
3273 void __iomem *ioaddr = tp->mmio_addr;
3274 u16 pci_status, pci_cmd;
3275
3276 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
3277 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
3278
3279 if (netif_msg_intr(tp)) {
3280 printk(KERN_ERR
3281 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
3282 dev->name, pci_cmd, pci_status);
3283 }
3284
3285 /*
3286 * The recovery sequence below admits a very elaborated explanation:
3287 * - it seems to work;
3288 * - I did not see what else could be done;
3289 * - it makes iop3xx happy.
3290 *
3291 * Feel free to adjust to your needs.
3292 */
3293 if (pdev->broken_parity_status)
3294 pci_cmd &= ~PCI_COMMAND_PARITY;
3295 else
3296 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
3297
3298 pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
3299
3300 pci_write_config_word(pdev, PCI_STATUS,
3301 pci_status & (PCI_STATUS_DETECTED_PARITY |
3302 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
3303 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
3304
3305 /* The infamous DAC f*ckup only happens at boot time */
3306 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
3307 if (netif_msg_intr(tp))
3308 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
3309 tp->cp_cmd &= ~PCIDAC;
3310 RTL_W16(CPlusCmd, tp->cp_cmd);
3311 dev->features &= ~NETIF_F_HIGHDMA;
3312 }
3313
3314 rtl8169_hw_reset(ioaddr);
3315
3316 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3317 }
3318
3319 static void rtl8169_tx_interrupt(struct net_device *dev,
3320 struct rtl8169_private *tp,
3321 void __iomem *ioaddr)
3322 {
3323 unsigned int dirty_tx, tx_left;
3324
3325 dirty_tx = tp->dirty_tx;
3326 smp_rmb();
3327 tx_left = tp->cur_tx - dirty_tx;
3328
3329 while (tx_left > 0) {
3330 unsigned int entry = dirty_tx % NUM_TX_DESC;
3331 struct ring_info *tx_skb = tp->tx_skb + entry;
3332 u32 len = tx_skb->len;
3333 u32 status;
3334
3335 rmb();
3336 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
3337 if (status & DescOwn)
3338 break;
3339
3340 dev->stats.tx_bytes += len;
3341 dev->stats.tx_packets++;
3342
3343 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
3344
3345 if (status & LastFrag) {
3346 dev_kfree_skb_irq(tx_skb->skb);
3347 tx_skb->skb = NULL;
3348 }
3349 dirty_tx++;
3350 tx_left--;
3351 }
3352
3353 if (tp->dirty_tx != dirty_tx) {
3354 tp->dirty_tx = dirty_tx;
3355 smp_wmb();
3356 if (netif_queue_stopped(dev) &&
3357 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
3358 netif_wake_queue(dev);
3359 }
3360 /*
3361 * 8168 hack: TxPoll requests are lost when the Tx packets are
3362 * too close. Let's kick an extra TxPoll request when a burst
3363 * of start_xmit activity is detected (if it is not detected,
3364 * it is slow enough). -- FR
3365 */
3366 smp_rmb();
3367 if (tp->cur_tx != dirty_tx)
3368 RTL_W8(TxPoll, NPQ);
3369 }
3370 }
3371
3372 static inline int rtl8169_fragmented_frame(u32 status)
3373 {
3374 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
3375 }
3376
3377 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
3378 {
3379 u32 opts1 = le32_to_cpu(desc->opts1);
3380 u32 status = opts1 & RxProtoMask;
3381
3382 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
3383 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
3384 ((status == RxProtoIP) && !(opts1 & IPFail)))
3385 skb->ip_summed = CHECKSUM_UNNECESSARY;
3386 else
3387 skb->ip_summed = CHECKSUM_NONE;
3388 }
3389
3390 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
3391 struct rtl8169_private *tp, int pkt_size,
3392 dma_addr_t addr)
3393 {
3394 struct sk_buff *skb;
3395 bool done = false;
3396
3397 if (pkt_size >= rx_copybreak)
3398 goto out;
3399
3400 skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
3401 if (!skb)
3402 goto out;
3403
3404 pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
3405 PCI_DMA_FROMDEVICE);
3406 skb_reserve(skb, NET_IP_ALIGN);
3407 skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
3408 *sk_buff = skb;
3409 done = true;
3410 out:
3411 return done;
3412 }
3413
3414 static int rtl8169_rx_interrupt(struct net_device *dev,
3415 struct rtl8169_private *tp,
3416 void __iomem *ioaddr, u32 budget)
3417 {
3418 unsigned int cur_rx, rx_left;
3419 unsigned int delta, count;
3420
3421 cur_rx = tp->cur_rx;
3422 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3423 rx_left = min(rx_left, budget);
3424
3425 for (; rx_left > 0; rx_left--, cur_rx++) {
3426 unsigned int entry = cur_rx % NUM_RX_DESC;
3427 struct RxDesc *desc = tp->RxDescArray + entry;
3428 u32 status;
3429
3430 rmb();
3431 status = le32_to_cpu(desc->opts1);
3432
3433 if (status & DescOwn)
3434 break;
3435 if (unlikely(status & RxRES)) {
3436 if (netif_msg_rx_err(tp)) {
3437 printk(KERN_INFO
3438 "%s: Rx ERROR. status = %08x\n",
3439 dev->name, status);
3440 }
3441 dev->stats.rx_errors++;
3442 if (status & (RxRWT | RxRUNT))
3443 dev->stats.rx_length_errors++;
3444 if (status & RxCRC)
3445 dev->stats.rx_crc_errors++;
3446 if (status & RxFOVF) {
3447 rtl8169_schedule_work(dev, rtl8169_reset_task);
3448 dev->stats.rx_fifo_errors++;
3449 }
3450 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3451 } else {
3452 struct sk_buff *skb = tp->Rx_skbuff[entry];
3453 dma_addr_t addr = le64_to_cpu(desc->addr);
3454 int pkt_size = (status & 0x00001FFF) - 4;
3455 struct pci_dev *pdev = tp->pci_dev;
3456
3457 /*
3458 * The driver does not support incoming fragmented
3459 * frames. They are seen as a symptom of over-mtu
3460 * sized frames.
3461 */
3462 if (unlikely(rtl8169_fragmented_frame(status))) {
3463 dev->stats.rx_dropped++;
3464 dev->stats.rx_length_errors++;
3465 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3466 continue;
3467 }
3468
3469 rtl8169_rx_csum(skb, desc);
3470
3471 if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3472 pci_dma_sync_single_for_device(pdev, addr,
3473 pkt_size, PCI_DMA_FROMDEVICE);
3474 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3475 } else {
3476 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3477 PCI_DMA_FROMDEVICE);
3478 tp->Rx_skbuff[entry] = NULL;
3479 }
3480
3481 skb_put(skb, pkt_size);
3482 skb->protocol = eth_type_trans(skb, dev);
3483
3484 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3485 netif_receive_skb(skb);
3486
3487 dev->last_rx = jiffies;
3488 dev->stats.rx_bytes += pkt_size;
3489 dev->stats.rx_packets++;
3490 }
3491
3492 /* Work around for AMD plateform. */
3493 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3494 (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3495 desc->opts2 = 0;
3496 cur_rx++;
3497 }
3498 }
3499
3500 count = cur_rx - tp->cur_rx;
3501 tp->cur_rx = cur_rx;
3502
3503 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3504 if (!delta && count && netif_msg_intr(tp))
3505 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3506 tp->dirty_rx += delta;
3507
3508 /*
3509 * FIXME: until there is periodic timer to try and refill the ring,
3510 * a temporary shortage may definitely kill the Rx process.
3511 * - disable the asic to try and avoid an overflow and kick it again
3512 * after refill ?
3513 * - how do others driver handle this condition (Uh oh...).
3514 */
3515 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3516 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3517
3518 return count;
3519 }
3520
3521 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3522 {
3523 struct net_device *dev = dev_instance;
3524 struct rtl8169_private *tp = netdev_priv(dev);
3525 void __iomem *ioaddr = tp->mmio_addr;
3526 int handled = 0;
3527 int status;
3528
3529 status = RTL_R16(IntrStatus);
3530
3531 /* hotplug/major error/no more work/shared irq */
3532 if ((status == 0xffff) || !status)
3533 goto out;
3534
3535 handled = 1;
3536
3537 if (unlikely(!netif_running(dev))) {
3538 rtl8169_asic_down(ioaddr);
3539 goto out;
3540 }
3541
3542 status &= tp->intr_mask;
3543 RTL_W16(IntrStatus,
3544 (status & RxFIFOOver) ? (status | RxOverflow) : status);
3545
3546 if (!(status & tp->intr_event))
3547 goto out;
3548
3549 /* Work around for rx fifo overflow */
3550 if (unlikely(status & RxFIFOOver) &&
3551 (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3552 netif_stop_queue(dev);
3553 rtl8169_tx_timeout(dev);
3554 goto out;
3555 }
3556
3557 if (unlikely(status & SYSErr)) {
3558 rtl8169_pcierr_interrupt(dev);
3559 goto out;
3560 }
3561
3562 if (status & LinkChg)
3563 rtl8169_check_link_status(dev, tp, ioaddr);
3564
3565 if (status & tp->napi_event) {
3566 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3567 tp->intr_mask = ~tp->napi_event;
3568
3569 if (likely(netif_rx_schedule_prep(dev, &tp->napi)))
3570 __netif_rx_schedule(dev, &tp->napi);
3571 else if (netif_msg_intr(tp)) {
3572 printk(KERN_INFO "%s: interrupt %04x in poll\n",
3573 dev->name, status);
3574 }
3575 }
3576 out:
3577 return IRQ_RETVAL(handled);
3578 }
3579
3580 static int rtl8169_poll(struct napi_struct *napi, int budget)
3581 {
3582 struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3583 struct net_device *dev = tp->dev;
3584 void __iomem *ioaddr = tp->mmio_addr;
3585 int work_done;
3586
3587 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3588 rtl8169_tx_interrupt(dev, tp, ioaddr);
3589
3590 if (work_done < budget) {
3591 netif_rx_complete(dev, napi);
3592 tp->intr_mask = 0xffff;
3593 /*
3594 * 20040426: the barrier is not strictly required but the
3595 * behavior of the irq handler could be less predictable
3596 * without it. Btw, the lack of flush for the posted pci
3597 * write is safe - FR
3598 */
3599 smp_wmb();
3600 RTL_W16(IntrMask, tp->intr_event);
3601 }
3602
3603 return work_done;
3604 }
3605
3606 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3607 {
3608 struct rtl8169_private *tp = netdev_priv(dev);
3609
3610 if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3611 return;
3612
3613 dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3614 RTL_W32(RxMissed, 0);
3615 }
3616
3617 static void rtl8169_down(struct net_device *dev)
3618 {
3619 struct rtl8169_private *tp = netdev_priv(dev);
3620 void __iomem *ioaddr = tp->mmio_addr;
3621 unsigned int intrmask;
3622
3623 rtl8169_delete_timer(dev);
3624
3625 netif_stop_queue(dev);
3626
3627 napi_disable(&tp->napi);
3628
3629 core_down:
3630 spin_lock_irq(&tp->lock);
3631
3632 rtl8169_asic_down(ioaddr);
3633
3634 rtl8169_rx_missed(dev, ioaddr);
3635
3636 spin_unlock_irq(&tp->lock);
3637
3638 synchronize_irq(dev->irq);
3639
3640 /* Give a racing hard_start_xmit a few cycles to complete. */
3641 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
3642
3643 /*
3644 * And now for the 50k$ question: are IRQ disabled or not ?
3645 *
3646 * Two paths lead here:
3647 * 1) dev->close
3648 * -> netif_running() is available to sync the current code and the
3649 * IRQ handler. See rtl8169_interrupt for details.
3650 * 2) dev->change_mtu
3651 * -> rtl8169_poll can not be issued again and re-enable the
3652 * interruptions. Let's simply issue the IRQ down sequence again.
3653 *
3654 * No loop if hotpluged or major error (0xffff).
3655 */
3656 intrmask = RTL_R16(IntrMask);
3657 if (intrmask && (intrmask != 0xffff))
3658 goto core_down;
3659
3660 rtl8169_tx_clear(tp);
3661
3662 rtl8169_rx_clear(tp);
3663 }
3664
3665 static int rtl8169_close(struct net_device *dev)
3666 {
3667 struct rtl8169_private *tp = netdev_priv(dev);
3668 struct pci_dev *pdev = tp->pci_dev;
3669
3670 rtl8169_down(dev);
3671
3672 free_irq(dev->irq, dev);
3673
3674 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3675 tp->RxPhyAddr);
3676 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3677 tp->TxPhyAddr);
3678 tp->TxDescArray = NULL;
3679 tp->RxDescArray = NULL;
3680
3681 return 0;
3682 }
3683
3684 static void rtl_set_rx_mode(struct net_device *dev)
3685 {
3686 struct rtl8169_private *tp = netdev_priv(dev);
3687 void __iomem *ioaddr = tp->mmio_addr;
3688 unsigned long flags;
3689 u32 mc_filter[2]; /* Multicast hash filter */
3690 int rx_mode;
3691 u32 tmp = 0;
3692
3693 if (dev->flags & IFF_PROMISC) {
3694 /* Unconditionally log net taps. */
3695 if (netif_msg_link(tp)) {
3696 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3697 dev->name);
3698 }
3699 rx_mode =
3700 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3701 AcceptAllPhys;
3702 mc_filter[1] = mc_filter[0] = 0xffffffff;
3703 } else if ((dev->mc_count > multicast_filter_limit)
3704 || (dev->flags & IFF_ALLMULTI)) {
3705 /* Too many to filter perfectly -- accept all multicasts. */
3706 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3707 mc_filter[1] = mc_filter[0] = 0xffffffff;
3708 } else {
3709 struct dev_mc_list *mclist;
3710 unsigned int i;
3711
3712 rx_mode = AcceptBroadcast | AcceptMyPhys;
3713 mc_filter[1] = mc_filter[0] = 0;
3714 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3715 i++, mclist = mclist->next) {
3716 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3717 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3718 rx_mode |= AcceptMulticast;
3719 }
3720 }
3721
3722 spin_lock_irqsave(&tp->lock, flags);
3723
3724 tmp = rtl8169_rx_config | rx_mode |
3725 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3726
3727 if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3728 u32 data = mc_filter[0];
3729
3730 mc_filter[0] = swab32(mc_filter[1]);
3731 mc_filter[1] = swab32(data);
3732 }
3733
3734 RTL_W32(MAR0 + 0, mc_filter[0]);
3735 RTL_W32(MAR0 + 4, mc_filter[1]);
3736
3737 RTL_W32(RxConfig, tmp);
3738
3739 spin_unlock_irqrestore(&tp->lock, flags);
3740 }
3741
3742 /**
3743 * rtl8169_get_stats - Get rtl8169 read/write statistics
3744 * @dev: The Ethernet Device to get statistics for
3745 *
3746 * Get TX/RX statistics for rtl8169
3747 */
3748 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3749 {
3750 struct rtl8169_private *tp = netdev_priv(dev);
3751 void __iomem *ioaddr = tp->mmio_addr;
3752 unsigned long flags;
3753
3754 if (netif_running(dev)) {
3755 spin_lock_irqsave(&tp->lock, flags);
3756 rtl8169_rx_missed(dev, ioaddr);
3757 spin_unlock_irqrestore(&tp->lock, flags);
3758 }
3759
3760 return &dev->stats;
3761 }
3762
3763 #ifdef CONFIG_PM
3764
3765 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3766 {
3767 struct net_device *dev = pci_get_drvdata(pdev);
3768 struct rtl8169_private *tp = netdev_priv(dev);
3769 void __iomem *ioaddr = tp->mmio_addr;
3770
3771 if (!netif_running(dev))
3772 goto out_pci_suspend;
3773
3774 netif_device_detach(dev);
3775 netif_stop_queue(dev);
3776
3777 spin_lock_irq(&tp->lock);
3778
3779 rtl8169_asic_down(ioaddr);
3780
3781 rtl8169_rx_missed(dev, ioaddr);
3782
3783 spin_unlock_irq(&tp->lock);
3784
3785 out_pci_suspend:
3786 pci_save_state(pdev);
3787 pci_enable_wake(pdev, pci_choose_state(pdev, state),
3788 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3789 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3790
3791 return 0;
3792 }
3793
3794 static int rtl8169_resume(struct pci_dev *pdev)
3795 {
3796 struct net_device *dev = pci_get_drvdata(pdev);
3797
3798 pci_set_power_state(pdev, PCI_D0);
3799 pci_restore_state(pdev);
3800 pci_enable_wake(pdev, PCI_D0, 0);
3801
3802 if (!netif_running(dev))
3803 goto out;
3804
3805 netif_device_attach(dev);
3806
3807 rtl8169_schedule_work(dev, rtl8169_reset_task);
3808 out:
3809 return 0;
3810 }
3811
3812 static void rtl_shutdown(struct pci_dev *pdev)
3813 {
3814 rtl8169_suspend(pdev, PMSG_SUSPEND);
3815 }
3816
3817 #endif /* CONFIG_PM */
3818
3819 static struct pci_driver rtl8169_pci_driver = {
3820 .name = MODULENAME,
3821 .id_table = rtl8169_pci_tbl,
3822 .probe = rtl8169_init_one,
3823 .remove = __devexit_p(rtl8169_remove_one),
3824 #ifdef CONFIG_PM
3825 .suspend = rtl8169_suspend,
3826 .resume = rtl8169_resume,
3827 .shutdown = rtl_shutdown,
3828 #endif
3829 };
3830
3831 static int __init rtl8169_init_module(void)
3832 {
3833 return pci_register_driver(&rtl8169_pci_driver);
3834 }
3835
3836 static void __exit rtl8169_cleanup_module(void)
3837 {
3838 pci_unregister_driver(&rtl8169_pci_driver);
3839 }
3840
3841 module_init(rtl8169_init_module);
3842 module_exit(rtl8169_cleanup_module);
Stable & featurefull patchset based on Linus's git branch