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net: fix network drivers ndo_start_xmit() return values (part 8)
[mirror_ubuntu-bionic-kernel.git] / drivers / net / r8169.c
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_NONE = 0x00,
98 RTL_GIGA_MAC_VER_01 = 0x01, // 8169
99 RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
100 RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
101 RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
102 RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
103 RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
104 RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
105 RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
106 RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
107 RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
108 RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
109 RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
110 RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
111 RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
112 RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
113 RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
114 RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
115 RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
116 RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
117 RTL_GIGA_MAC_VER_20 = 0x14, // 8168C
118 RTL_GIGA_MAC_VER_21 = 0x15, // 8168C
119 RTL_GIGA_MAC_VER_22 = 0x16, // 8168C
120 RTL_GIGA_MAC_VER_23 = 0x17, // 8168CP
121 RTL_GIGA_MAC_VER_24 = 0x18, // 8168CP
122 RTL_GIGA_MAC_VER_25 = 0x19 // 8168D
123 };
124
125 #define _R(NAME,MAC,MASK) \
126 { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
127
128 static const struct {
129 const char *name;
130 u8 mac_version;
131 u32 RxConfigMask; /* Clears the bits supported by this chip */
132 } rtl_chip_info[] = {
133 _R("RTL8169", RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
134 _R("RTL8169s", RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
135 _R("RTL8110s", RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
136 _R("RTL8169sb/8110sb", RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
137 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
138 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
139 _R("RTL8102e", RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
140 _R("RTL8102e", RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
141 _R("RTL8102e", RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
142 _R("RTL8101e", RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
143 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
144 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
145 _R("RTL8101e", RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
146 _R("RTL8100e", RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
147 _R("RTL8100e", RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
148 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
149 _R("RTL8101e", RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
150 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
151 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
152 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_20, 0xff7e1880), // PCI-E
153 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_21, 0xff7e1880), // PCI-E
154 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_22, 0xff7e1880), // PCI-E
155 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_23, 0xff7e1880), // PCI-E
156 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_24, 0xff7e1880), // PCI-E
157 _R("RTL8168d/8111d", RTL_GIGA_MAC_VER_25, 0xff7e1880) // PCI-E
158 };
159 #undef _R
160
161 enum cfg_version {
162 RTL_CFG_0 = 0x00,
163 RTL_CFG_1,
164 RTL_CFG_2
165 };
166
167 static void rtl_hw_start_8169(struct net_device *);
168 static void rtl_hw_start_8168(struct net_device *);
169 static void rtl_hw_start_8101(struct net_device *);
170
171 static struct pci_device_id rtl8169_pci_tbl[] = {
172 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
173 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
174 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167), 0, 0, RTL_CFG_0 },
175 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168), 0, 0, RTL_CFG_1 },
176 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), 0, 0, RTL_CFG_0 },
177 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4300), 0, 0, RTL_CFG_0 },
178 { PCI_DEVICE(PCI_VENDOR_ID_AT, 0xc107), 0, 0, RTL_CFG_0 },
179 { PCI_DEVICE(0x16ec, 0x0116), 0, 0, RTL_CFG_0 },
180 { PCI_VENDOR_ID_LINKSYS, 0x1032,
181 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
182 { 0x0001, 0x8168,
183 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
184 {0,},
185 };
186
187 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
188
189 static int rx_copybreak = 200;
190 static int use_dac;
191 static struct {
192 u32 msg_enable;
193 } debug = { -1 };
194
195 enum rtl_registers {
196 MAC0 = 0, /* Ethernet hardware address. */
197 MAC4 = 4,
198 MAR0 = 8, /* Multicast filter. */
199 CounterAddrLow = 0x10,
200 CounterAddrHigh = 0x14,
201 TxDescStartAddrLow = 0x20,
202 TxDescStartAddrHigh = 0x24,
203 TxHDescStartAddrLow = 0x28,
204 TxHDescStartAddrHigh = 0x2c,
205 FLASH = 0x30,
206 ERSR = 0x36,
207 ChipCmd = 0x37,
208 TxPoll = 0x38,
209 IntrMask = 0x3c,
210 IntrStatus = 0x3e,
211 TxConfig = 0x40,
212 RxConfig = 0x44,
213 RxMissed = 0x4c,
214 Cfg9346 = 0x50,
215 Config0 = 0x51,
216 Config1 = 0x52,
217 Config2 = 0x53,
218 Config3 = 0x54,
219 Config4 = 0x55,
220 Config5 = 0x56,
221 MultiIntr = 0x5c,
222 PHYAR = 0x60,
223 PHYstatus = 0x6c,
224 RxMaxSize = 0xda,
225 CPlusCmd = 0xe0,
226 IntrMitigate = 0xe2,
227 RxDescAddrLow = 0xe4,
228 RxDescAddrHigh = 0xe8,
229 EarlyTxThres = 0xec,
230 FuncEvent = 0xf0,
231 FuncEventMask = 0xf4,
232 FuncPresetState = 0xf8,
233 FuncForceEvent = 0xfc,
234 };
235
236 enum rtl8110_registers {
237 TBICSR = 0x64,
238 TBI_ANAR = 0x68,
239 TBI_LPAR = 0x6a,
240 };
241
242 enum rtl8168_8101_registers {
243 CSIDR = 0x64,
244 CSIAR = 0x68,
245 #define CSIAR_FLAG 0x80000000
246 #define CSIAR_WRITE_CMD 0x80000000
247 #define CSIAR_BYTE_ENABLE 0x0f
248 #define CSIAR_BYTE_ENABLE_SHIFT 12
249 #define CSIAR_ADDR_MASK 0x0fff
250
251 EPHYAR = 0x80,
252 #define EPHYAR_FLAG 0x80000000
253 #define EPHYAR_WRITE_CMD 0x80000000
254 #define EPHYAR_REG_MASK 0x1f
255 #define EPHYAR_REG_SHIFT 16
256 #define EPHYAR_DATA_MASK 0xffff
257 DBG_REG = 0xd1,
258 #define FIX_NAK_1 (1 << 4)
259 #define FIX_NAK_2 (1 << 3)
260 };
261
262 enum rtl_register_content {
263 /* InterruptStatusBits */
264 SYSErr = 0x8000,
265 PCSTimeout = 0x4000,
266 SWInt = 0x0100,
267 TxDescUnavail = 0x0080,
268 RxFIFOOver = 0x0040,
269 LinkChg = 0x0020,
270 RxOverflow = 0x0010,
271 TxErr = 0x0008,
272 TxOK = 0x0004,
273 RxErr = 0x0002,
274 RxOK = 0x0001,
275
276 /* RxStatusDesc */
277 RxFOVF = (1 << 23),
278 RxRWT = (1 << 22),
279 RxRES = (1 << 21),
280 RxRUNT = (1 << 20),
281 RxCRC = (1 << 19),
282
283 /* ChipCmdBits */
284 CmdReset = 0x10,
285 CmdRxEnb = 0x08,
286 CmdTxEnb = 0x04,
287 RxBufEmpty = 0x01,
288
289 /* TXPoll register p.5 */
290 HPQ = 0x80, /* Poll cmd on the high prio queue */
291 NPQ = 0x40, /* Poll cmd on the low prio queue */
292 FSWInt = 0x01, /* Forced software interrupt */
293
294 /* Cfg9346Bits */
295 Cfg9346_Lock = 0x00,
296 Cfg9346_Unlock = 0xc0,
297
298 /* rx_mode_bits */
299 AcceptErr = 0x20,
300 AcceptRunt = 0x10,
301 AcceptBroadcast = 0x08,
302 AcceptMulticast = 0x04,
303 AcceptMyPhys = 0x02,
304 AcceptAllPhys = 0x01,
305
306 /* RxConfigBits */
307 RxCfgFIFOShift = 13,
308 RxCfgDMAShift = 8,
309
310 /* TxConfigBits */
311 TxInterFrameGapShift = 24,
312 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
313
314 /* Config1 register p.24 */
315 LEDS1 = (1 << 7),
316 LEDS0 = (1 << 6),
317 MSIEnable = (1 << 5), /* Enable Message Signaled Interrupt */
318 Speed_down = (1 << 4),
319 MEMMAP = (1 << 3),
320 IOMAP = (1 << 2),
321 VPD = (1 << 1),
322 PMEnable = (1 << 0), /* Power Management Enable */
323
324 /* Config2 register p. 25 */
325 PCI_Clock_66MHz = 0x01,
326 PCI_Clock_33MHz = 0x00,
327
328 /* Config3 register p.25 */
329 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
330 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
331 Beacon_en = (1 << 0), /* 8168 only. Reserved in the 8168b */
332
333 /* Config5 register p.27 */
334 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
335 MWF = (1 << 5), /* Accept Multicast wakeup frame */
336 UWF = (1 << 4), /* Accept Unicast wakeup frame */
337 LanWake = (1 << 1), /* LanWake enable/disable */
338 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
339
340 /* TBICSR p.28 */
341 TBIReset = 0x80000000,
342 TBILoopback = 0x40000000,
343 TBINwEnable = 0x20000000,
344 TBINwRestart = 0x10000000,
345 TBILinkOk = 0x02000000,
346 TBINwComplete = 0x01000000,
347
348 /* CPlusCmd p.31 */
349 EnableBist = (1 << 15), // 8168 8101
350 Mac_dbgo_oe = (1 << 14), // 8168 8101
351 Normal_mode = (1 << 13), // unused
352 Force_half_dup = (1 << 12), // 8168 8101
353 Force_rxflow_en = (1 << 11), // 8168 8101
354 Force_txflow_en = (1 << 10), // 8168 8101
355 Cxpl_dbg_sel = (1 << 9), // 8168 8101
356 ASF = (1 << 8), // 8168 8101
357 PktCntrDisable = (1 << 7), // 8168 8101
358 Mac_dbgo_sel = 0x001c, // 8168
359 RxVlan = (1 << 6),
360 RxChkSum = (1 << 5),
361 PCIDAC = (1 << 4),
362 PCIMulRW = (1 << 3),
363 INTT_0 = 0x0000, // 8168
364 INTT_1 = 0x0001, // 8168
365 INTT_2 = 0x0002, // 8168
366 INTT_3 = 0x0003, // 8168
367
368 /* rtl8169_PHYstatus */
369 TBI_Enable = 0x80,
370 TxFlowCtrl = 0x40,
371 RxFlowCtrl = 0x20,
372 _1000bpsF = 0x10,
373 _100bps = 0x08,
374 _10bps = 0x04,
375 LinkStatus = 0x02,
376 FullDup = 0x01,
377
378 /* _TBICSRBit */
379 TBILinkOK = 0x02000000,
380
381 /* DumpCounterCommand */
382 CounterDump = 0x8,
383 };
384
385 enum desc_status_bit {
386 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
387 RingEnd = (1 << 30), /* End of descriptor ring */
388 FirstFrag = (1 << 29), /* First segment of a packet */
389 LastFrag = (1 << 28), /* Final segment of a packet */
390
391 /* Tx private */
392 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
393 MSSShift = 16, /* MSS value position */
394 MSSMask = 0xfff, /* MSS value + LargeSend bit: 12 bits */
395 IPCS = (1 << 18), /* Calculate IP checksum */
396 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
397 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
398 TxVlanTag = (1 << 17), /* Add VLAN tag */
399
400 /* Rx private */
401 PID1 = (1 << 18), /* Protocol ID bit 1/2 */
402 PID0 = (1 << 17), /* Protocol ID bit 2/2 */
403
404 #define RxProtoUDP (PID1)
405 #define RxProtoTCP (PID0)
406 #define RxProtoIP (PID1 | PID0)
407 #define RxProtoMask RxProtoIP
408
409 IPFail = (1 << 16), /* IP checksum failed */
410 UDPFail = (1 << 15), /* UDP/IP checksum failed */
411 TCPFail = (1 << 14), /* TCP/IP checksum failed */
412 RxVlanTag = (1 << 16), /* VLAN tag available */
413 };
414
415 #define RsvdMask 0x3fffc000
416
417 struct TxDesc {
418 __le32 opts1;
419 __le32 opts2;
420 __le64 addr;
421 };
422
423 struct RxDesc {
424 __le32 opts1;
425 __le32 opts2;
426 __le64 addr;
427 };
428
429 struct ring_info {
430 struct sk_buff *skb;
431 u32 len;
432 u8 __pad[sizeof(void *) - sizeof(u32)];
433 };
434
435 enum features {
436 RTL_FEATURE_WOL = (1 << 0),
437 RTL_FEATURE_MSI = (1 << 1),
438 RTL_FEATURE_GMII = (1 << 2),
439 };
440
441 struct rtl8169_counters {
442 __le64 tx_packets;
443 __le64 rx_packets;
444 __le64 tx_errors;
445 __le32 rx_errors;
446 __le16 rx_missed;
447 __le16 align_errors;
448 __le32 tx_one_collision;
449 __le32 tx_multi_collision;
450 __le64 rx_unicast;
451 __le64 rx_broadcast;
452 __le32 rx_multicast;
453 __le16 tx_aborted;
454 __le16 tx_underun;
455 };
456
457 struct rtl8169_private {
458 void __iomem *mmio_addr; /* memory map physical address */
459 struct pci_dev *pci_dev; /* Index of PCI device */
460 struct net_device *dev;
461 struct napi_struct napi;
462 spinlock_t lock; /* spin lock flag */
463 u32 msg_enable;
464 int chipset;
465 int mac_version;
466 u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
467 u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
468 u32 dirty_rx;
469 u32 dirty_tx;
470 struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
471 struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
472 dma_addr_t TxPhyAddr;
473 dma_addr_t RxPhyAddr;
474 struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
475 struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
476 unsigned align;
477 unsigned rx_buf_sz;
478 struct timer_list timer;
479 u16 cp_cmd;
480 u16 intr_event;
481 u16 napi_event;
482 u16 intr_mask;
483 int phy_1000_ctrl_reg;
484 #ifdef CONFIG_R8169_VLAN
485 struct vlan_group *vlgrp;
486 #endif
487 int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
488 int (*get_settings)(struct net_device *, struct ethtool_cmd *);
489 void (*phy_reset_enable)(void __iomem *);
490 void (*hw_start)(struct net_device *);
491 unsigned int (*phy_reset_pending)(void __iomem *);
492 unsigned int (*link_ok)(void __iomem *);
493 int (*do_ioctl)(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd);
494 int pcie_cap;
495 struct delayed_work task;
496 unsigned features;
497
498 struct mii_if_info mii;
499 struct rtl8169_counters counters;
500 };
501
502 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
503 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
504 module_param(rx_copybreak, int, 0);
505 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
506 module_param(use_dac, int, 0);
507 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
508 module_param_named(debug, debug.msg_enable, int, 0);
509 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
510 MODULE_LICENSE("GPL");
511 MODULE_VERSION(RTL8169_VERSION);
512
513 static int rtl8169_open(struct net_device *dev);
514 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
515 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
516 static int rtl8169_init_ring(struct net_device *dev);
517 static void rtl_hw_start(struct net_device *dev);
518 static int rtl8169_close(struct net_device *dev);
519 static void rtl_set_rx_mode(struct net_device *dev);
520 static void rtl8169_tx_timeout(struct net_device *dev);
521 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
522 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
523 void __iomem *, u32 budget);
524 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
525 static void rtl8169_down(struct net_device *dev);
526 static void rtl8169_rx_clear(struct rtl8169_private *tp);
527 static int rtl8169_poll(struct napi_struct *napi, int budget);
528
529 static const unsigned int rtl8169_rx_config =
530 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
531
532 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
533 {
534 int i;
535
536 RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
537
538 for (i = 20; i > 0; i--) {
539 /*
540 * Check if the RTL8169 has completed writing to the specified
541 * MII register.
542 */
543 if (!(RTL_R32(PHYAR) & 0x80000000))
544 break;
545 udelay(25);
546 }
547 }
548
549 static int mdio_read(void __iomem *ioaddr, int reg_addr)
550 {
551 int i, value = -1;
552
553 RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
554
555 for (i = 20; i > 0; i--) {
556 /*
557 * Check if the RTL8169 has completed retrieving data from
558 * the specified MII register.
559 */
560 if (RTL_R32(PHYAR) & 0x80000000) {
561 value = RTL_R32(PHYAR) & 0xffff;
562 break;
563 }
564 udelay(25);
565 }
566 return value;
567 }
568
569 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
570 {
571 mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
572 }
573
574 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
575 int val)
576 {
577 struct rtl8169_private *tp = netdev_priv(dev);
578 void __iomem *ioaddr = tp->mmio_addr;
579
580 mdio_write(ioaddr, location, val);
581 }
582
583 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
584 {
585 struct rtl8169_private *tp = netdev_priv(dev);
586 void __iomem *ioaddr = tp->mmio_addr;
587
588 return mdio_read(ioaddr, location);
589 }
590
591 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
592 {
593 unsigned int i;
594
595 RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
596 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
597
598 for (i = 0; i < 100; i++) {
599 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
600 break;
601 udelay(10);
602 }
603 }
604
605 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
606 {
607 u16 value = 0xffff;
608 unsigned int i;
609
610 RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
611
612 for (i = 0; i < 100; i++) {
613 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
614 value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
615 break;
616 }
617 udelay(10);
618 }
619
620 return value;
621 }
622
623 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
624 {
625 unsigned int i;
626
627 RTL_W32(CSIDR, value);
628 RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
629 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
630
631 for (i = 0; i < 100; i++) {
632 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
633 break;
634 udelay(10);
635 }
636 }
637
638 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
639 {
640 u32 value = ~0x00;
641 unsigned int i;
642
643 RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
644 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
645
646 for (i = 0; i < 100; i++) {
647 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
648 value = RTL_R32(CSIDR);
649 break;
650 }
651 udelay(10);
652 }
653
654 return value;
655 }
656
657 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
658 {
659 RTL_W16(IntrMask, 0x0000);
660
661 RTL_W16(IntrStatus, 0xffff);
662 }
663
664 static void rtl8169_asic_down(void __iomem *ioaddr)
665 {
666 RTL_W8(ChipCmd, 0x00);
667 rtl8169_irq_mask_and_ack(ioaddr);
668 RTL_R16(CPlusCmd);
669 }
670
671 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
672 {
673 return RTL_R32(TBICSR) & TBIReset;
674 }
675
676 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
677 {
678 return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
679 }
680
681 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
682 {
683 return RTL_R32(TBICSR) & TBILinkOk;
684 }
685
686 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
687 {
688 return RTL_R8(PHYstatus) & LinkStatus;
689 }
690
691 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
692 {
693 RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
694 }
695
696 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
697 {
698 unsigned int val;
699
700 val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
701 mdio_write(ioaddr, MII_BMCR, val & 0xffff);
702 }
703
704 static void rtl8169_check_link_status(struct net_device *dev,
705 struct rtl8169_private *tp,
706 void __iomem *ioaddr)
707 {
708 unsigned long flags;
709
710 spin_lock_irqsave(&tp->lock, flags);
711 if (tp->link_ok(ioaddr)) {
712 netif_carrier_on(dev);
713 if (netif_msg_ifup(tp))
714 printk(KERN_INFO PFX "%s: link up\n", dev->name);
715 } else {
716 if (netif_msg_ifdown(tp))
717 printk(KERN_INFO PFX "%s: link down\n", dev->name);
718 netif_carrier_off(dev);
719 }
720 spin_unlock_irqrestore(&tp->lock, flags);
721 }
722
723 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
724 {
725 struct rtl8169_private *tp = netdev_priv(dev);
726 void __iomem *ioaddr = tp->mmio_addr;
727 u8 options;
728
729 wol->wolopts = 0;
730
731 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
732 wol->supported = WAKE_ANY;
733
734 spin_lock_irq(&tp->lock);
735
736 options = RTL_R8(Config1);
737 if (!(options & PMEnable))
738 goto out_unlock;
739
740 options = RTL_R8(Config3);
741 if (options & LinkUp)
742 wol->wolopts |= WAKE_PHY;
743 if (options & MagicPacket)
744 wol->wolopts |= WAKE_MAGIC;
745
746 options = RTL_R8(Config5);
747 if (options & UWF)
748 wol->wolopts |= WAKE_UCAST;
749 if (options & BWF)
750 wol->wolopts |= WAKE_BCAST;
751 if (options & MWF)
752 wol->wolopts |= WAKE_MCAST;
753
754 out_unlock:
755 spin_unlock_irq(&tp->lock);
756 }
757
758 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
759 {
760 struct rtl8169_private *tp = netdev_priv(dev);
761 void __iomem *ioaddr = tp->mmio_addr;
762 unsigned int i;
763 static struct {
764 u32 opt;
765 u16 reg;
766 u8 mask;
767 } cfg[] = {
768 { WAKE_ANY, Config1, PMEnable },
769 { WAKE_PHY, Config3, LinkUp },
770 { WAKE_MAGIC, Config3, MagicPacket },
771 { WAKE_UCAST, Config5, UWF },
772 { WAKE_BCAST, Config5, BWF },
773 { WAKE_MCAST, Config5, MWF },
774 { WAKE_ANY, Config5, LanWake }
775 };
776
777 spin_lock_irq(&tp->lock);
778
779 RTL_W8(Cfg9346, Cfg9346_Unlock);
780
781 for (i = 0; i < ARRAY_SIZE(cfg); i++) {
782 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
783 if (wol->wolopts & cfg[i].opt)
784 options |= cfg[i].mask;
785 RTL_W8(cfg[i].reg, options);
786 }
787
788 RTL_W8(Cfg9346, Cfg9346_Lock);
789
790 if (wol->wolopts)
791 tp->features |= RTL_FEATURE_WOL;
792 else
793 tp->features &= ~RTL_FEATURE_WOL;
794 device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts);
795
796 spin_unlock_irq(&tp->lock);
797
798 return 0;
799 }
800
801 static void rtl8169_get_drvinfo(struct net_device *dev,
802 struct ethtool_drvinfo *info)
803 {
804 struct rtl8169_private *tp = netdev_priv(dev);
805
806 strcpy(info->driver, MODULENAME);
807 strcpy(info->version, RTL8169_VERSION);
808 strcpy(info->bus_info, pci_name(tp->pci_dev));
809 }
810
811 static int rtl8169_get_regs_len(struct net_device *dev)
812 {
813 return R8169_REGS_SIZE;
814 }
815
816 static int rtl8169_set_speed_tbi(struct net_device *dev,
817 u8 autoneg, u16 speed, u8 duplex)
818 {
819 struct rtl8169_private *tp = netdev_priv(dev);
820 void __iomem *ioaddr = tp->mmio_addr;
821 int ret = 0;
822 u32 reg;
823
824 reg = RTL_R32(TBICSR);
825 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
826 (duplex == DUPLEX_FULL)) {
827 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
828 } else if (autoneg == AUTONEG_ENABLE)
829 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
830 else {
831 if (netif_msg_link(tp)) {
832 printk(KERN_WARNING "%s: "
833 "incorrect speed setting refused in TBI mode\n",
834 dev->name);
835 }
836 ret = -EOPNOTSUPP;
837 }
838
839 return ret;
840 }
841
842 static int rtl8169_set_speed_xmii(struct net_device *dev,
843 u8 autoneg, u16 speed, u8 duplex)
844 {
845 struct rtl8169_private *tp = netdev_priv(dev);
846 void __iomem *ioaddr = tp->mmio_addr;
847 int giga_ctrl, bmcr;
848
849 if (autoneg == AUTONEG_ENABLE) {
850 int auto_nego;
851
852 auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
853 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
854 ADVERTISE_100HALF | ADVERTISE_100FULL);
855 auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
856
857 giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
858 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
859
860 /* The 8100e/8101e/8102e do Fast Ethernet only. */
861 if ((tp->mac_version != RTL_GIGA_MAC_VER_07) &&
862 (tp->mac_version != RTL_GIGA_MAC_VER_08) &&
863 (tp->mac_version != RTL_GIGA_MAC_VER_09) &&
864 (tp->mac_version != RTL_GIGA_MAC_VER_10) &&
865 (tp->mac_version != RTL_GIGA_MAC_VER_13) &&
866 (tp->mac_version != RTL_GIGA_MAC_VER_14) &&
867 (tp->mac_version != RTL_GIGA_MAC_VER_15) &&
868 (tp->mac_version != RTL_GIGA_MAC_VER_16)) {
869 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
870 } else if (netif_msg_link(tp)) {
871 printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
872 dev->name);
873 }
874
875 bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
876
877 if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
878 (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
879 (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
880 /*
881 * Wake up the PHY.
882 * Vendor specific (0x1f) and reserved (0x0e) MII
883 * registers.
884 */
885 mdio_write(ioaddr, 0x1f, 0x0000);
886 mdio_write(ioaddr, 0x0e, 0x0000);
887 }
888
889 mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
890 mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
891 } else {
892 giga_ctrl = 0;
893
894 if (speed == SPEED_10)
895 bmcr = 0;
896 else if (speed == SPEED_100)
897 bmcr = BMCR_SPEED100;
898 else
899 return -EINVAL;
900
901 if (duplex == DUPLEX_FULL)
902 bmcr |= BMCR_FULLDPLX;
903
904 mdio_write(ioaddr, 0x1f, 0x0000);
905 }
906
907 tp->phy_1000_ctrl_reg = giga_ctrl;
908
909 mdio_write(ioaddr, MII_BMCR, bmcr);
910
911 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
912 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
913 if ((speed == SPEED_100) && (autoneg != AUTONEG_ENABLE)) {
914 mdio_write(ioaddr, 0x17, 0x2138);
915 mdio_write(ioaddr, 0x0e, 0x0260);
916 } else {
917 mdio_write(ioaddr, 0x17, 0x2108);
918 mdio_write(ioaddr, 0x0e, 0x0000);
919 }
920 }
921
922 return 0;
923 }
924
925 static int rtl8169_set_speed(struct net_device *dev,
926 u8 autoneg, u16 speed, u8 duplex)
927 {
928 struct rtl8169_private *tp = netdev_priv(dev);
929 int ret;
930
931 ret = tp->set_speed(dev, autoneg, speed, duplex);
932
933 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
934 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
935
936 return ret;
937 }
938
939 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
940 {
941 struct rtl8169_private *tp = netdev_priv(dev);
942 unsigned long flags;
943 int ret;
944
945 spin_lock_irqsave(&tp->lock, flags);
946 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
947 spin_unlock_irqrestore(&tp->lock, flags);
948
949 return ret;
950 }
951
952 static u32 rtl8169_get_rx_csum(struct net_device *dev)
953 {
954 struct rtl8169_private *tp = netdev_priv(dev);
955
956 return tp->cp_cmd & RxChkSum;
957 }
958
959 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
960 {
961 struct rtl8169_private *tp = netdev_priv(dev);
962 void __iomem *ioaddr = tp->mmio_addr;
963 unsigned long flags;
964
965 spin_lock_irqsave(&tp->lock, flags);
966
967 if (data)
968 tp->cp_cmd |= RxChkSum;
969 else
970 tp->cp_cmd &= ~RxChkSum;
971
972 RTL_W16(CPlusCmd, tp->cp_cmd);
973 RTL_R16(CPlusCmd);
974
975 spin_unlock_irqrestore(&tp->lock, flags);
976
977 return 0;
978 }
979
980 #ifdef CONFIG_R8169_VLAN
981
982 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
983 struct sk_buff *skb)
984 {
985 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
986 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
987 }
988
989 static void rtl8169_vlan_rx_register(struct net_device *dev,
990 struct vlan_group *grp)
991 {
992 struct rtl8169_private *tp = netdev_priv(dev);
993 void __iomem *ioaddr = tp->mmio_addr;
994 unsigned long flags;
995
996 spin_lock_irqsave(&tp->lock, flags);
997 tp->vlgrp = grp;
998 if (tp->vlgrp)
999 tp->cp_cmd |= RxVlan;
1000 else
1001 tp->cp_cmd &= ~RxVlan;
1002 RTL_W16(CPlusCmd, tp->cp_cmd);
1003 RTL_R16(CPlusCmd);
1004 spin_unlock_irqrestore(&tp->lock, flags);
1005 }
1006
1007 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1008 struct sk_buff *skb)
1009 {
1010 u32 opts2 = le32_to_cpu(desc->opts2);
1011 struct vlan_group *vlgrp = tp->vlgrp;
1012 int ret;
1013
1014 if (vlgrp && (opts2 & RxVlanTag)) {
1015 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
1016 ret = 0;
1017 } else
1018 ret = -1;
1019 desc->opts2 = 0;
1020 return ret;
1021 }
1022
1023 #else /* !CONFIG_R8169_VLAN */
1024
1025 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
1026 struct sk_buff *skb)
1027 {
1028 return 0;
1029 }
1030
1031 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1032 struct sk_buff *skb)
1033 {
1034 return -1;
1035 }
1036
1037 #endif
1038
1039 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
1040 {
1041 struct rtl8169_private *tp = netdev_priv(dev);
1042 void __iomem *ioaddr = tp->mmio_addr;
1043 u32 status;
1044
1045 cmd->supported =
1046 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1047 cmd->port = PORT_FIBRE;
1048 cmd->transceiver = XCVR_INTERNAL;
1049
1050 status = RTL_R32(TBICSR);
1051 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
1052 cmd->autoneg = !!(status & TBINwEnable);
1053
1054 cmd->speed = SPEED_1000;
1055 cmd->duplex = DUPLEX_FULL; /* Always set */
1056
1057 return 0;
1058 }
1059
1060 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1061 {
1062 struct rtl8169_private *tp = netdev_priv(dev);
1063
1064 return mii_ethtool_gset(&tp->mii, cmd);
1065 }
1066
1067 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1068 {
1069 struct rtl8169_private *tp = netdev_priv(dev);
1070 unsigned long flags;
1071 int rc;
1072
1073 spin_lock_irqsave(&tp->lock, flags);
1074
1075 rc = tp->get_settings(dev, cmd);
1076
1077 spin_unlock_irqrestore(&tp->lock, flags);
1078 return rc;
1079 }
1080
1081 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1082 void *p)
1083 {
1084 struct rtl8169_private *tp = netdev_priv(dev);
1085 unsigned long flags;
1086
1087 if (regs->len > R8169_REGS_SIZE)
1088 regs->len = R8169_REGS_SIZE;
1089
1090 spin_lock_irqsave(&tp->lock, flags);
1091 memcpy_fromio(p, tp->mmio_addr, regs->len);
1092 spin_unlock_irqrestore(&tp->lock, flags);
1093 }
1094
1095 static u32 rtl8169_get_msglevel(struct net_device *dev)
1096 {
1097 struct rtl8169_private *tp = netdev_priv(dev);
1098
1099 return tp->msg_enable;
1100 }
1101
1102 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1103 {
1104 struct rtl8169_private *tp = netdev_priv(dev);
1105
1106 tp->msg_enable = value;
1107 }
1108
1109 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1110 "tx_packets",
1111 "rx_packets",
1112 "tx_errors",
1113 "rx_errors",
1114 "rx_missed",
1115 "align_errors",
1116 "tx_single_collisions",
1117 "tx_multi_collisions",
1118 "unicast",
1119 "broadcast",
1120 "multicast",
1121 "tx_aborted",
1122 "tx_underrun",
1123 };
1124
1125 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1126 {
1127 switch (sset) {
1128 case ETH_SS_STATS:
1129 return ARRAY_SIZE(rtl8169_gstrings);
1130 default:
1131 return -EOPNOTSUPP;
1132 }
1133 }
1134
1135 static void rtl8169_update_counters(struct net_device *dev)
1136 {
1137 struct rtl8169_private *tp = netdev_priv(dev);
1138 void __iomem *ioaddr = tp->mmio_addr;
1139 struct rtl8169_counters *counters;
1140 dma_addr_t paddr;
1141 u32 cmd;
1142 int wait = 1000;
1143
1144 /*
1145 * Some chips are unable to dump tally counters when the receiver
1146 * is disabled.
1147 */
1148 if ((RTL_R8(ChipCmd) & CmdRxEnb) == 0)
1149 return;
1150
1151 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1152 if (!counters)
1153 return;
1154
1155 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1156 cmd = (u64)paddr & DMA_BIT_MASK(32);
1157 RTL_W32(CounterAddrLow, cmd);
1158 RTL_W32(CounterAddrLow, cmd | CounterDump);
1159
1160 while (wait--) {
1161 if ((RTL_R32(CounterAddrLow) & CounterDump) == 0) {
1162 /* copy updated counters */
1163 memcpy(&tp->counters, counters, sizeof(*counters));
1164 break;
1165 }
1166 udelay(10);
1167 }
1168
1169 RTL_W32(CounterAddrLow, 0);
1170 RTL_W32(CounterAddrHigh, 0);
1171
1172 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1173 }
1174
1175 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1176 struct ethtool_stats *stats, u64 *data)
1177 {
1178 struct rtl8169_private *tp = netdev_priv(dev);
1179
1180 ASSERT_RTNL();
1181
1182 rtl8169_update_counters(dev);
1183
1184 data[0] = le64_to_cpu(tp->counters.tx_packets);
1185 data[1] = le64_to_cpu(tp->counters.rx_packets);
1186 data[2] = le64_to_cpu(tp->counters.tx_errors);
1187 data[3] = le32_to_cpu(tp->counters.rx_errors);
1188 data[4] = le16_to_cpu(tp->counters.rx_missed);
1189 data[5] = le16_to_cpu(tp->counters.align_errors);
1190 data[6] = le32_to_cpu(tp->counters.tx_one_collision);
1191 data[7] = le32_to_cpu(tp->counters.tx_multi_collision);
1192 data[8] = le64_to_cpu(tp->counters.rx_unicast);
1193 data[9] = le64_to_cpu(tp->counters.rx_broadcast);
1194 data[10] = le32_to_cpu(tp->counters.rx_multicast);
1195 data[11] = le16_to_cpu(tp->counters.tx_aborted);
1196 data[12] = le16_to_cpu(tp->counters.tx_underun);
1197 }
1198
1199 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1200 {
1201 switch(stringset) {
1202 case ETH_SS_STATS:
1203 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1204 break;
1205 }
1206 }
1207
1208 static const struct ethtool_ops rtl8169_ethtool_ops = {
1209 .get_drvinfo = rtl8169_get_drvinfo,
1210 .get_regs_len = rtl8169_get_regs_len,
1211 .get_link = ethtool_op_get_link,
1212 .get_settings = rtl8169_get_settings,
1213 .set_settings = rtl8169_set_settings,
1214 .get_msglevel = rtl8169_get_msglevel,
1215 .set_msglevel = rtl8169_set_msglevel,
1216 .get_rx_csum = rtl8169_get_rx_csum,
1217 .set_rx_csum = rtl8169_set_rx_csum,
1218 .set_tx_csum = ethtool_op_set_tx_csum,
1219 .set_sg = ethtool_op_set_sg,
1220 .set_tso = ethtool_op_set_tso,
1221 .get_regs = rtl8169_get_regs,
1222 .get_wol = rtl8169_get_wol,
1223 .set_wol = rtl8169_set_wol,
1224 .get_strings = rtl8169_get_strings,
1225 .get_sset_count = rtl8169_get_sset_count,
1226 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1227 };
1228
1229 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1230 int bitnum, int bitval)
1231 {
1232 int val;
1233
1234 val = mdio_read(ioaddr, reg);
1235 val = (bitval == 1) ?
1236 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1237 mdio_write(ioaddr, reg, val & 0xffff);
1238 }
1239
1240 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1241 void __iomem *ioaddr)
1242 {
1243 /*
1244 * The driver currently handles the 8168Bf and the 8168Be identically
1245 * but they can be identified more specifically through the test below
1246 * if needed:
1247 *
1248 * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1249 *
1250 * Same thing for the 8101Eb and the 8101Ec:
1251 *
1252 * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1253 */
1254 const struct {
1255 u32 mask;
1256 u32 val;
1257 int mac_version;
1258 } mac_info[] = {
1259 /* 8168D family. */
1260 { 0x7c800000, 0x28000000, RTL_GIGA_MAC_VER_25 },
1261
1262 /* 8168C family. */
1263 { 0x7cf00000, 0x3ca00000, RTL_GIGA_MAC_VER_24 },
1264 { 0x7cf00000, 0x3c900000, RTL_GIGA_MAC_VER_23 },
1265 { 0x7cf00000, 0x3c800000, RTL_GIGA_MAC_VER_18 },
1266 { 0x7c800000, 0x3c800000, RTL_GIGA_MAC_VER_24 },
1267 { 0x7cf00000, 0x3c000000, RTL_GIGA_MAC_VER_19 },
1268 { 0x7cf00000, 0x3c200000, RTL_GIGA_MAC_VER_20 },
1269 { 0x7cf00000, 0x3c300000, RTL_GIGA_MAC_VER_21 },
1270 { 0x7cf00000, 0x3c400000, RTL_GIGA_MAC_VER_22 },
1271 { 0x7c800000, 0x3c000000, RTL_GIGA_MAC_VER_22 },
1272
1273 /* 8168B family. */
1274 { 0x7cf00000, 0x38000000, RTL_GIGA_MAC_VER_12 },
1275 { 0x7cf00000, 0x38500000, RTL_GIGA_MAC_VER_17 },
1276 { 0x7c800000, 0x38000000, RTL_GIGA_MAC_VER_17 },
1277 { 0x7c800000, 0x30000000, RTL_GIGA_MAC_VER_11 },
1278
1279 /* 8101 family. */
1280 { 0x7cf00000, 0x34a00000, RTL_GIGA_MAC_VER_09 },
1281 { 0x7cf00000, 0x24a00000, RTL_GIGA_MAC_VER_09 },
1282 { 0x7cf00000, 0x34900000, RTL_GIGA_MAC_VER_08 },
1283 { 0x7cf00000, 0x24900000, RTL_GIGA_MAC_VER_08 },
1284 { 0x7cf00000, 0x34800000, RTL_GIGA_MAC_VER_07 },
1285 { 0x7cf00000, 0x24800000, RTL_GIGA_MAC_VER_07 },
1286 { 0x7cf00000, 0x34000000, RTL_GIGA_MAC_VER_13 },
1287 { 0x7cf00000, 0x34300000, RTL_GIGA_MAC_VER_10 },
1288 { 0x7cf00000, 0x34200000, RTL_GIGA_MAC_VER_16 },
1289 { 0x7c800000, 0x34800000, RTL_GIGA_MAC_VER_09 },
1290 { 0x7c800000, 0x24800000, RTL_GIGA_MAC_VER_09 },
1291 { 0x7c800000, 0x34000000, RTL_GIGA_MAC_VER_16 },
1292 /* FIXME: where did these entries come from ? -- FR */
1293 { 0xfc800000, 0x38800000, RTL_GIGA_MAC_VER_15 },
1294 { 0xfc800000, 0x30800000, RTL_GIGA_MAC_VER_14 },
1295
1296 /* 8110 family. */
1297 { 0xfc800000, 0x98000000, RTL_GIGA_MAC_VER_06 },
1298 { 0xfc800000, 0x18000000, RTL_GIGA_MAC_VER_05 },
1299 { 0xfc800000, 0x10000000, RTL_GIGA_MAC_VER_04 },
1300 { 0xfc800000, 0x04000000, RTL_GIGA_MAC_VER_03 },
1301 { 0xfc800000, 0x00800000, RTL_GIGA_MAC_VER_02 },
1302 { 0xfc800000, 0x00000000, RTL_GIGA_MAC_VER_01 },
1303
1304 /* Catch-all */
1305 { 0x00000000, 0x00000000, RTL_GIGA_MAC_NONE }
1306 }, *p = mac_info;
1307 u32 reg;
1308
1309 reg = RTL_R32(TxConfig);
1310 while ((reg & p->mask) != p->val)
1311 p++;
1312 tp->mac_version = p->mac_version;
1313 }
1314
1315 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1316 {
1317 dprintk("mac_version = 0x%02x\n", tp->mac_version);
1318 }
1319
1320 struct phy_reg {
1321 u16 reg;
1322 u16 val;
1323 };
1324
1325 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1326 {
1327 while (len-- > 0) {
1328 mdio_write(ioaddr, regs->reg, regs->val);
1329 regs++;
1330 }
1331 }
1332
1333 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1334 {
1335 struct {
1336 u16 regs[5]; /* Beware of bit-sign propagation */
1337 } phy_magic[5] = { {
1338 { 0x0000, //w 4 15 12 0
1339 0x00a1, //w 3 15 0 00a1
1340 0x0008, //w 2 15 0 0008
1341 0x1020, //w 1 15 0 1020
1342 0x1000 } },{ //w 0 15 0 1000
1343 { 0x7000, //w 4 15 12 7
1344 0xff41, //w 3 15 0 ff41
1345 0xde60, //w 2 15 0 de60
1346 0x0140, //w 1 15 0 0140
1347 0x0077 } },{ //w 0 15 0 0077
1348 { 0xa000, //w 4 15 12 a
1349 0xdf01, //w 3 15 0 df01
1350 0xdf20, //w 2 15 0 df20
1351 0xff95, //w 1 15 0 ff95
1352 0xfa00 } },{ //w 0 15 0 fa00
1353 { 0xb000, //w 4 15 12 b
1354 0xff41, //w 3 15 0 ff41
1355 0xde20, //w 2 15 0 de20
1356 0x0140, //w 1 15 0 0140
1357 0x00bb } },{ //w 0 15 0 00bb
1358 { 0xf000, //w 4 15 12 f
1359 0xdf01, //w 3 15 0 df01
1360 0xdf20, //w 2 15 0 df20
1361 0xff95, //w 1 15 0 ff95
1362 0xbf00 } //w 0 15 0 bf00
1363 }
1364 }, *p = phy_magic;
1365 unsigned int i;
1366
1367 mdio_write(ioaddr, 0x1f, 0x0001); //w 31 2 0 1
1368 mdio_write(ioaddr, 0x15, 0x1000); //w 21 15 0 1000
1369 mdio_write(ioaddr, 0x18, 0x65c7); //w 24 15 0 65c7
1370 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1371
1372 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1373 int val, pos = 4;
1374
1375 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1376 mdio_write(ioaddr, pos, val);
1377 while (--pos >= 0)
1378 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1379 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1380 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1381 }
1382 mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1383 }
1384
1385 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1386 {
1387 struct phy_reg phy_reg_init[] = {
1388 { 0x1f, 0x0002 },
1389 { 0x01, 0x90d0 },
1390 { 0x1f, 0x0000 }
1391 };
1392
1393 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1394 }
1395
1396 static void rtl8168bb_hw_phy_config(void __iomem *ioaddr)
1397 {
1398 struct phy_reg phy_reg_init[] = {
1399 { 0x10, 0xf41b },
1400 { 0x1f, 0x0000 }
1401 };
1402
1403 mdio_write(ioaddr, 0x1f, 0x0001);
1404 mdio_patch(ioaddr, 0x16, 1 << 0);
1405
1406 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1407 }
1408
1409 static void rtl8168bef_hw_phy_config(void __iomem *ioaddr)
1410 {
1411 struct phy_reg phy_reg_init[] = {
1412 { 0x1f, 0x0001 },
1413 { 0x10, 0xf41b },
1414 { 0x1f, 0x0000 }
1415 };
1416
1417 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1418 }
1419
1420 static void rtl8168cp_1_hw_phy_config(void __iomem *ioaddr)
1421 {
1422 struct phy_reg phy_reg_init[] = {
1423 { 0x1f, 0x0000 },
1424 { 0x1d, 0x0f00 },
1425 { 0x1f, 0x0002 },
1426 { 0x0c, 0x1ec8 },
1427 { 0x1f, 0x0000 }
1428 };
1429
1430 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1431 }
1432
1433 static void rtl8168cp_2_hw_phy_config(void __iomem *ioaddr)
1434 {
1435 struct phy_reg phy_reg_init[] = {
1436 { 0x1f, 0x0001 },
1437 { 0x1d, 0x3d98 },
1438 { 0x1f, 0x0000 }
1439 };
1440
1441 mdio_write(ioaddr, 0x1f, 0x0000);
1442 mdio_patch(ioaddr, 0x14, 1 << 5);
1443 mdio_patch(ioaddr, 0x0d, 1 << 5);
1444
1445 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1446 }
1447
1448 static void rtl8168c_1_hw_phy_config(void __iomem *ioaddr)
1449 {
1450 struct phy_reg phy_reg_init[] = {
1451 { 0x1f, 0x0001 },
1452 { 0x12, 0x2300 },
1453 { 0x1f, 0x0002 },
1454 { 0x00, 0x88d4 },
1455 { 0x01, 0x82b1 },
1456 { 0x03, 0x7002 },
1457 { 0x08, 0x9e30 },
1458 { 0x09, 0x01f0 },
1459 { 0x0a, 0x5500 },
1460 { 0x0c, 0x00c8 },
1461 { 0x1f, 0x0003 },
1462 { 0x12, 0xc096 },
1463 { 0x16, 0x000a },
1464 { 0x1f, 0x0000 },
1465 { 0x1f, 0x0000 },
1466 { 0x09, 0x2000 },
1467 { 0x09, 0x0000 }
1468 };
1469
1470 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1471
1472 mdio_patch(ioaddr, 0x14, 1 << 5);
1473 mdio_patch(ioaddr, 0x0d, 1 << 5);
1474 mdio_write(ioaddr, 0x1f, 0x0000);
1475 }
1476
1477 static void rtl8168c_2_hw_phy_config(void __iomem *ioaddr)
1478 {
1479 struct phy_reg phy_reg_init[] = {
1480 { 0x1f, 0x0001 },
1481 { 0x12, 0x2300 },
1482 { 0x03, 0x802f },
1483 { 0x02, 0x4f02 },
1484 { 0x01, 0x0409 },
1485 { 0x00, 0xf099 },
1486 { 0x04, 0x9800 },
1487 { 0x04, 0x9000 },
1488 { 0x1d, 0x3d98 },
1489 { 0x1f, 0x0002 },
1490 { 0x0c, 0x7eb8 },
1491 { 0x06, 0x0761 },
1492 { 0x1f, 0x0003 },
1493 { 0x16, 0x0f0a },
1494 { 0x1f, 0x0000 }
1495 };
1496
1497 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1498
1499 mdio_patch(ioaddr, 0x16, 1 << 0);
1500 mdio_patch(ioaddr, 0x14, 1 << 5);
1501 mdio_patch(ioaddr, 0x0d, 1 << 5);
1502 mdio_write(ioaddr, 0x1f, 0x0000);
1503 }
1504
1505 static void rtl8168c_3_hw_phy_config(void __iomem *ioaddr)
1506 {
1507 struct phy_reg phy_reg_init[] = {
1508 { 0x1f, 0x0001 },
1509 { 0x12, 0x2300 },
1510 { 0x1d, 0x3d98 },
1511 { 0x1f, 0x0002 },
1512 { 0x0c, 0x7eb8 },
1513 { 0x06, 0x5461 },
1514 { 0x1f, 0x0003 },
1515 { 0x16, 0x0f0a },
1516 { 0x1f, 0x0000 }
1517 };
1518
1519 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1520
1521 mdio_patch(ioaddr, 0x16, 1 << 0);
1522 mdio_patch(ioaddr, 0x14, 1 << 5);
1523 mdio_patch(ioaddr, 0x0d, 1 << 5);
1524 mdio_write(ioaddr, 0x1f, 0x0000);
1525 }
1526
1527 static void rtl8168c_4_hw_phy_config(void __iomem *ioaddr)
1528 {
1529 rtl8168c_3_hw_phy_config(ioaddr);
1530 }
1531
1532 static void rtl8168d_hw_phy_config(void __iomem *ioaddr)
1533 {
1534 struct phy_reg phy_reg_init_0[] = {
1535 { 0x1f, 0x0001 },
1536 { 0x09, 0x2770 },
1537 { 0x08, 0x04d0 },
1538 { 0x0b, 0xad15 },
1539 { 0x0c, 0x5bf0 },
1540 { 0x1c, 0xf101 },
1541 { 0x1f, 0x0003 },
1542 { 0x14, 0x94d7 },
1543 { 0x12, 0xf4d6 },
1544 { 0x09, 0xca0f },
1545 { 0x1f, 0x0002 },
1546 { 0x0b, 0x0b10 },
1547 { 0x0c, 0xd1f7 },
1548 { 0x1f, 0x0002 },
1549 { 0x06, 0x5461 },
1550 { 0x1f, 0x0002 },
1551 { 0x05, 0x6662 },
1552 { 0x1f, 0x0000 },
1553 { 0x14, 0x0060 },
1554 { 0x1f, 0x0000 },
1555 { 0x0d, 0xf8a0 },
1556 { 0x1f, 0x0005 },
1557 { 0x05, 0xffc2 }
1558 };
1559
1560 rtl_phy_write(ioaddr, phy_reg_init_0, ARRAY_SIZE(phy_reg_init_0));
1561
1562 if (mdio_read(ioaddr, 0x06) == 0xc400) {
1563 struct phy_reg phy_reg_init_1[] = {
1564 { 0x1f, 0x0005 },
1565 { 0x01, 0x0300 },
1566 { 0x1f, 0x0000 },
1567 { 0x11, 0x401c },
1568 { 0x16, 0x4100 },
1569 { 0x1f, 0x0005 },
1570 { 0x07, 0x0010 },
1571 { 0x05, 0x83dc },
1572 { 0x06, 0x087d },
1573 { 0x05, 0x8300 },
1574 { 0x06, 0x0101 },
1575 { 0x06, 0x05f8 },
1576 { 0x06, 0xf9fa },
1577 { 0x06, 0xfbef },
1578 { 0x06, 0x79e2 },
1579 { 0x06, 0x835f },
1580 { 0x06, 0xe0f8 },
1581 { 0x06, 0x9ae1 },
1582 { 0x06, 0xf89b },
1583 { 0x06, 0xef31 },
1584 { 0x06, 0x3b65 },
1585 { 0x06, 0xaa07 },
1586 { 0x06, 0x81e4 },
1587 { 0x06, 0xf89a },
1588 { 0x06, 0xe5f8 },
1589 { 0x06, 0x9baf },
1590 { 0x06, 0x06ae },
1591 { 0x05, 0x83dc },
1592 { 0x06, 0x8300 },
1593 };
1594
1595 rtl_phy_write(ioaddr, phy_reg_init_1,
1596 ARRAY_SIZE(phy_reg_init_1));
1597 }
1598
1599 mdio_write(ioaddr, 0x1f, 0x0000);
1600 }
1601
1602 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1603 {
1604 struct phy_reg phy_reg_init[] = {
1605 { 0x1f, 0x0003 },
1606 { 0x08, 0x441d },
1607 { 0x01, 0x9100 },
1608 { 0x1f, 0x0000 }
1609 };
1610
1611 mdio_write(ioaddr, 0x1f, 0x0000);
1612 mdio_patch(ioaddr, 0x11, 1 << 12);
1613 mdio_patch(ioaddr, 0x19, 1 << 13);
1614
1615 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1616 }
1617
1618 static void rtl_hw_phy_config(struct net_device *dev)
1619 {
1620 struct rtl8169_private *tp = netdev_priv(dev);
1621 void __iomem *ioaddr = tp->mmio_addr;
1622
1623 rtl8169_print_mac_version(tp);
1624
1625 switch (tp->mac_version) {
1626 case RTL_GIGA_MAC_VER_01:
1627 break;
1628 case RTL_GIGA_MAC_VER_02:
1629 case RTL_GIGA_MAC_VER_03:
1630 rtl8169s_hw_phy_config(ioaddr);
1631 break;
1632 case RTL_GIGA_MAC_VER_04:
1633 rtl8169sb_hw_phy_config(ioaddr);
1634 break;
1635 case RTL_GIGA_MAC_VER_07:
1636 case RTL_GIGA_MAC_VER_08:
1637 case RTL_GIGA_MAC_VER_09:
1638 rtl8102e_hw_phy_config(ioaddr);
1639 break;
1640 case RTL_GIGA_MAC_VER_11:
1641 rtl8168bb_hw_phy_config(ioaddr);
1642 break;
1643 case RTL_GIGA_MAC_VER_12:
1644 rtl8168bef_hw_phy_config(ioaddr);
1645 break;
1646 case RTL_GIGA_MAC_VER_17:
1647 rtl8168bef_hw_phy_config(ioaddr);
1648 break;
1649 case RTL_GIGA_MAC_VER_18:
1650 rtl8168cp_1_hw_phy_config(ioaddr);
1651 break;
1652 case RTL_GIGA_MAC_VER_19:
1653 rtl8168c_1_hw_phy_config(ioaddr);
1654 break;
1655 case RTL_GIGA_MAC_VER_20:
1656 rtl8168c_2_hw_phy_config(ioaddr);
1657 break;
1658 case RTL_GIGA_MAC_VER_21:
1659 rtl8168c_3_hw_phy_config(ioaddr);
1660 break;
1661 case RTL_GIGA_MAC_VER_22:
1662 rtl8168c_4_hw_phy_config(ioaddr);
1663 break;
1664 case RTL_GIGA_MAC_VER_23:
1665 case RTL_GIGA_MAC_VER_24:
1666 rtl8168cp_2_hw_phy_config(ioaddr);
1667 break;
1668 case RTL_GIGA_MAC_VER_25:
1669 rtl8168d_hw_phy_config(ioaddr);
1670 break;
1671
1672 default:
1673 break;
1674 }
1675 }
1676
1677 static void rtl8169_phy_timer(unsigned long __opaque)
1678 {
1679 struct net_device *dev = (struct net_device *)__opaque;
1680 struct rtl8169_private *tp = netdev_priv(dev);
1681 struct timer_list *timer = &tp->timer;
1682 void __iomem *ioaddr = tp->mmio_addr;
1683 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1684
1685 assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1686
1687 if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1688 return;
1689
1690 spin_lock_irq(&tp->lock);
1691
1692 if (tp->phy_reset_pending(ioaddr)) {
1693 /*
1694 * A busy loop could burn quite a few cycles on nowadays CPU.
1695 * Let's delay the execution of the timer for a few ticks.
1696 */
1697 timeout = HZ/10;
1698 goto out_mod_timer;
1699 }
1700
1701 if (tp->link_ok(ioaddr))
1702 goto out_unlock;
1703
1704 if (netif_msg_link(tp))
1705 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1706
1707 tp->phy_reset_enable(ioaddr);
1708
1709 out_mod_timer:
1710 mod_timer(timer, jiffies + timeout);
1711 out_unlock:
1712 spin_unlock_irq(&tp->lock);
1713 }
1714
1715 static inline void rtl8169_delete_timer(struct net_device *dev)
1716 {
1717 struct rtl8169_private *tp = netdev_priv(dev);
1718 struct timer_list *timer = &tp->timer;
1719
1720 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1721 return;
1722
1723 del_timer_sync(timer);
1724 }
1725
1726 static inline void rtl8169_request_timer(struct net_device *dev)
1727 {
1728 struct rtl8169_private *tp = netdev_priv(dev);
1729 struct timer_list *timer = &tp->timer;
1730
1731 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1732 return;
1733
1734 mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1735 }
1736
1737 #ifdef CONFIG_NET_POLL_CONTROLLER
1738 /*
1739 * Polling 'interrupt' - used by things like netconsole to send skbs
1740 * without having to re-enable interrupts. It's not called while
1741 * the interrupt routine is executing.
1742 */
1743 static void rtl8169_netpoll(struct net_device *dev)
1744 {
1745 struct rtl8169_private *tp = netdev_priv(dev);
1746 struct pci_dev *pdev = tp->pci_dev;
1747
1748 disable_irq(pdev->irq);
1749 rtl8169_interrupt(pdev->irq, dev);
1750 enable_irq(pdev->irq);
1751 }
1752 #endif
1753
1754 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1755 void __iomem *ioaddr)
1756 {
1757 iounmap(ioaddr);
1758 pci_release_regions(pdev);
1759 pci_disable_device(pdev);
1760 free_netdev(dev);
1761 }
1762
1763 static void rtl8169_phy_reset(struct net_device *dev,
1764 struct rtl8169_private *tp)
1765 {
1766 void __iomem *ioaddr = tp->mmio_addr;
1767 unsigned int i;
1768
1769 tp->phy_reset_enable(ioaddr);
1770 for (i = 0; i < 100; i++) {
1771 if (!tp->phy_reset_pending(ioaddr))
1772 return;
1773 msleep(1);
1774 }
1775 if (netif_msg_link(tp))
1776 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1777 }
1778
1779 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1780 {
1781 void __iomem *ioaddr = tp->mmio_addr;
1782
1783 rtl_hw_phy_config(dev);
1784
1785 if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1786 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1787 RTL_W8(0x82, 0x01);
1788 }
1789
1790 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1791
1792 if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1793 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1794
1795 if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1796 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1797 RTL_W8(0x82, 0x01);
1798 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1799 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1800 }
1801
1802 rtl8169_phy_reset(dev, tp);
1803
1804 /*
1805 * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1806 * only 8101. Don't panic.
1807 */
1808 rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1809
1810 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1811 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1812 }
1813
1814 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1815 {
1816 void __iomem *ioaddr = tp->mmio_addr;
1817 u32 high;
1818 u32 low;
1819
1820 low = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1821 high = addr[4] | (addr[5] << 8);
1822
1823 spin_lock_irq(&tp->lock);
1824
1825 RTL_W8(Cfg9346, Cfg9346_Unlock);
1826 RTL_W32(MAC0, low);
1827 RTL_W32(MAC4, high);
1828 RTL_W8(Cfg9346, Cfg9346_Lock);
1829
1830 spin_unlock_irq(&tp->lock);
1831 }
1832
1833 static int rtl_set_mac_address(struct net_device *dev, void *p)
1834 {
1835 struct rtl8169_private *tp = netdev_priv(dev);
1836 struct sockaddr *addr = p;
1837
1838 if (!is_valid_ether_addr(addr->sa_data))
1839 return -EADDRNOTAVAIL;
1840
1841 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1842
1843 rtl_rar_set(tp, dev->dev_addr);
1844
1845 return 0;
1846 }
1847
1848 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1849 {
1850 struct rtl8169_private *tp = netdev_priv(dev);
1851 struct mii_ioctl_data *data = if_mii(ifr);
1852
1853 return netif_running(dev) ? tp->do_ioctl(tp, data, cmd) : -ENODEV;
1854 }
1855
1856 static int rtl_xmii_ioctl(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd)
1857 {
1858 switch (cmd) {
1859 case SIOCGMIIPHY:
1860 data->phy_id = 32; /* Internal PHY */
1861 return 0;
1862
1863 case SIOCGMIIREG:
1864 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1865 return 0;
1866
1867 case SIOCSMIIREG:
1868 if (!capable(CAP_NET_ADMIN))
1869 return -EPERM;
1870 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1871 return 0;
1872 }
1873 return -EOPNOTSUPP;
1874 }
1875
1876 static int rtl_tbi_ioctl(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd)
1877 {
1878 return -EOPNOTSUPP;
1879 }
1880
1881 static const struct rtl_cfg_info {
1882 void (*hw_start)(struct net_device *);
1883 unsigned int region;
1884 unsigned int align;
1885 u16 intr_event;
1886 u16 napi_event;
1887 unsigned features;
1888 u8 default_ver;
1889 } rtl_cfg_infos [] = {
1890 [RTL_CFG_0] = {
1891 .hw_start = rtl_hw_start_8169,
1892 .region = 1,
1893 .align = 0,
1894 .intr_event = SYSErr | LinkChg | RxOverflow |
1895 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1896 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1897 .features = RTL_FEATURE_GMII,
1898 .default_ver = RTL_GIGA_MAC_VER_01,
1899 },
1900 [RTL_CFG_1] = {
1901 .hw_start = rtl_hw_start_8168,
1902 .region = 2,
1903 .align = 8,
1904 .intr_event = SYSErr | LinkChg | RxOverflow |
1905 TxErr | TxOK | RxOK | RxErr,
1906 .napi_event = TxErr | TxOK | RxOK | RxOverflow,
1907 .features = RTL_FEATURE_GMII | RTL_FEATURE_MSI,
1908 .default_ver = RTL_GIGA_MAC_VER_11,
1909 },
1910 [RTL_CFG_2] = {
1911 .hw_start = rtl_hw_start_8101,
1912 .region = 2,
1913 .align = 8,
1914 .intr_event = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1915 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1916 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1917 .features = RTL_FEATURE_MSI,
1918 .default_ver = RTL_GIGA_MAC_VER_13,
1919 }
1920 };
1921
1922 /* Cfg9346_Unlock assumed. */
1923 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1924 const struct rtl_cfg_info *cfg)
1925 {
1926 unsigned msi = 0;
1927 u8 cfg2;
1928
1929 cfg2 = RTL_R8(Config2) & ~MSIEnable;
1930 if (cfg->features & RTL_FEATURE_MSI) {
1931 if (pci_enable_msi(pdev)) {
1932 dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1933 } else {
1934 cfg2 |= MSIEnable;
1935 msi = RTL_FEATURE_MSI;
1936 }
1937 }
1938 RTL_W8(Config2, cfg2);
1939 return msi;
1940 }
1941
1942 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1943 {
1944 if (tp->features & RTL_FEATURE_MSI) {
1945 pci_disable_msi(pdev);
1946 tp->features &= ~RTL_FEATURE_MSI;
1947 }
1948 }
1949
1950 static const struct net_device_ops rtl8169_netdev_ops = {
1951 .ndo_open = rtl8169_open,
1952 .ndo_stop = rtl8169_close,
1953 .ndo_get_stats = rtl8169_get_stats,
1954 .ndo_start_xmit = rtl8169_start_xmit,
1955 .ndo_tx_timeout = rtl8169_tx_timeout,
1956 .ndo_validate_addr = eth_validate_addr,
1957 .ndo_change_mtu = rtl8169_change_mtu,
1958 .ndo_set_mac_address = rtl_set_mac_address,
1959 .ndo_do_ioctl = rtl8169_ioctl,
1960 .ndo_set_multicast_list = rtl_set_rx_mode,
1961 #ifdef CONFIG_R8169_VLAN
1962 .ndo_vlan_rx_register = rtl8169_vlan_rx_register,
1963 #endif
1964 #ifdef CONFIG_NET_POLL_CONTROLLER
1965 .ndo_poll_controller = rtl8169_netpoll,
1966 #endif
1967
1968 };
1969
1970 static int __devinit
1971 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1972 {
1973 const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1974 const unsigned int region = cfg->region;
1975 struct rtl8169_private *tp;
1976 struct mii_if_info *mii;
1977 struct net_device *dev;
1978 void __iomem *ioaddr;
1979 unsigned int i;
1980 int rc;
1981
1982 if (netif_msg_drv(&debug)) {
1983 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1984 MODULENAME, RTL8169_VERSION);
1985 }
1986
1987 dev = alloc_etherdev(sizeof (*tp));
1988 if (!dev) {
1989 if (netif_msg_drv(&debug))
1990 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1991 rc = -ENOMEM;
1992 goto out;
1993 }
1994
1995 SET_NETDEV_DEV(dev, &pdev->dev);
1996 dev->netdev_ops = &rtl8169_netdev_ops;
1997 tp = netdev_priv(dev);
1998 tp->dev = dev;
1999 tp->pci_dev = pdev;
2000 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
2001
2002 mii = &tp->mii;
2003 mii->dev = dev;
2004 mii->mdio_read = rtl_mdio_read;
2005 mii->mdio_write = rtl_mdio_write;
2006 mii->phy_id_mask = 0x1f;
2007 mii->reg_num_mask = 0x1f;
2008 mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
2009
2010 /* enable device (incl. PCI PM wakeup and hotplug setup) */
2011 rc = pci_enable_device(pdev);
2012 if (rc < 0) {
2013 if (netif_msg_probe(tp))
2014 dev_err(&pdev->dev, "enable failure\n");
2015 goto err_out_free_dev_1;
2016 }
2017
2018 rc = pci_set_mwi(pdev);
2019 if (rc < 0)
2020 goto err_out_disable_2;
2021
2022 /* make sure PCI base addr 1 is MMIO */
2023 if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
2024 if (netif_msg_probe(tp)) {
2025 dev_err(&pdev->dev,
2026 "region #%d not an MMIO resource, aborting\n",
2027 region);
2028 }
2029 rc = -ENODEV;
2030 goto err_out_mwi_3;
2031 }
2032
2033 /* check for weird/broken PCI region reporting */
2034 if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
2035 if (netif_msg_probe(tp)) {
2036 dev_err(&pdev->dev,
2037 "Invalid PCI region size(s), aborting\n");
2038 }
2039 rc = -ENODEV;
2040 goto err_out_mwi_3;
2041 }
2042
2043 rc = pci_request_regions(pdev, MODULENAME);
2044 if (rc < 0) {
2045 if (netif_msg_probe(tp))
2046 dev_err(&pdev->dev, "could not request regions.\n");
2047 goto err_out_mwi_3;
2048 }
2049
2050 tp->cp_cmd = PCIMulRW | RxChkSum;
2051
2052 if ((sizeof(dma_addr_t) > 4) &&
2053 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && use_dac) {
2054 tp->cp_cmd |= PCIDAC;
2055 dev->features |= NETIF_F_HIGHDMA;
2056 } else {
2057 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2058 if (rc < 0) {
2059 if (netif_msg_probe(tp)) {
2060 dev_err(&pdev->dev,
2061 "DMA configuration failed.\n");
2062 }
2063 goto err_out_free_res_4;
2064 }
2065 }
2066
2067 pci_set_master(pdev);
2068
2069 /* ioremap MMIO region */
2070 ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
2071 if (!ioaddr) {
2072 if (netif_msg_probe(tp))
2073 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
2074 rc = -EIO;
2075 goto err_out_free_res_4;
2076 }
2077
2078 tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2079 if (!tp->pcie_cap && netif_msg_probe(tp))
2080 dev_info(&pdev->dev, "no PCI Express capability\n");
2081
2082 RTL_W16(IntrMask, 0x0000);
2083
2084 /* Soft reset the chip. */
2085 RTL_W8(ChipCmd, CmdReset);
2086
2087 /* Check that the chip has finished the reset. */
2088 for (i = 0; i < 100; i++) {
2089 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2090 break;
2091 msleep_interruptible(1);
2092 }
2093
2094 RTL_W16(IntrStatus, 0xffff);
2095
2096 /* Identify chip attached to board */
2097 rtl8169_get_mac_version(tp, ioaddr);
2098
2099 /* Use appropriate default if unknown */
2100 if (tp->mac_version == RTL_GIGA_MAC_NONE) {
2101 if (netif_msg_probe(tp)) {
2102 dev_notice(&pdev->dev,
2103 "unknown MAC, using family default\n");
2104 }
2105 tp->mac_version = cfg->default_ver;
2106 }
2107
2108 rtl8169_print_mac_version(tp);
2109
2110 for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
2111 if (tp->mac_version == rtl_chip_info[i].mac_version)
2112 break;
2113 }
2114 if (i == ARRAY_SIZE(rtl_chip_info)) {
2115 dev_err(&pdev->dev,
2116 "driver bug, MAC version not found in rtl_chip_info\n");
2117 goto err_out_msi_5;
2118 }
2119 tp->chipset = i;
2120
2121 RTL_W8(Cfg9346, Cfg9346_Unlock);
2122 RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
2123 RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
2124 if ((RTL_R8(Config3) & (LinkUp | MagicPacket)) != 0)
2125 tp->features |= RTL_FEATURE_WOL;
2126 if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0)
2127 tp->features |= RTL_FEATURE_WOL;
2128 tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
2129 RTL_W8(Cfg9346, Cfg9346_Lock);
2130
2131 if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
2132 (RTL_R8(PHYstatus) & TBI_Enable)) {
2133 tp->set_speed = rtl8169_set_speed_tbi;
2134 tp->get_settings = rtl8169_gset_tbi;
2135 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
2136 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
2137 tp->link_ok = rtl8169_tbi_link_ok;
2138 tp->do_ioctl = rtl_tbi_ioctl;
2139
2140 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
2141 } else {
2142 tp->set_speed = rtl8169_set_speed_xmii;
2143 tp->get_settings = rtl8169_gset_xmii;
2144 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
2145 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
2146 tp->link_ok = rtl8169_xmii_link_ok;
2147 tp->do_ioctl = rtl_xmii_ioctl;
2148 }
2149
2150 spin_lock_init(&tp->lock);
2151
2152 tp->mmio_addr = ioaddr;
2153
2154 /* Get MAC address */
2155 for (i = 0; i < MAC_ADDR_LEN; i++)
2156 dev->dev_addr[i] = RTL_R8(MAC0 + i);
2157 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2158
2159 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
2160 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
2161 dev->irq = pdev->irq;
2162 dev->base_addr = (unsigned long) ioaddr;
2163
2164 netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
2165
2166 #ifdef CONFIG_R8169_VLAN
2167 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2168 #endif
2169
2170 tp->intr_mask = 0xffff;
2171 tp->align = cfg->align;
2172 tp->hw_start = cfg->hw_start;
2173 tp->intr_event = cfg->intr_event;
2174 tp->napi_event = cfg->napi_event;
2175
2176 init_timer(&tp->timer);
2177 tp->timer.data = (unsigned long) dev;
2178 tp->timer.function = rtl8169_phy_timer;
2179
2180 rc = register_netdev(dev);
2181 if (rc < 0)
2182 goto err_out_msi_5;
2183
2184 pci_set_drvdata(pdev, dev);
2185
2186 if (netif_msg_probe(tp)) {
2187 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
2188
2189 printk(KERN_INFO "%s: %s at 0x%lx, "
2190 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
2191 "XID %08x IRQ %d\n",
2192 dev->name,
2193 rtl_chip_info[tp->chipset].name,
2194 dev->base_addr,
2195 dev->dev_addr[0], dev->dev_addr[1],
2196 dev->dev_addr[2], dev->dev_addr[3],
2197 dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
2198 }
2199
2200 rtl8169_init_phy(dev, tp);
2201 device_set_wakeup_enable(&pdev->dev, tp->features & RTL_FEATURE_WOL);
2202
2203 out:
2204 return rc;
2205
2206 err_out_msi_5:
2207 rtl_disable_msi(pdev, tp);
2208 iounmap(ioaddr);
2209 err_out_free_res_4:
2210 pci_release_regions(pdev);
2211 err_out_mwi_3:
2212 pci_clear_mwi(pdev);
2213 err_out_disable_2:
2214 pci_disable_device(pdev);
2215 err_out_free_dev_1:
2216 free_netdev(dev);
2217 goto out;
2218 }
2219
2220 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
2221 {
2222 struct net_device *dev = pci_get_drvdata(pdev);
2223 struct rtl8169_private *tp = netdev_priv(dev);
2224
2225 flush_scheduled_work();
2226
2227 unregister_netdev(dev);
2228 rtl_disable_msi(pdev, tp);
2229 rtl8169_release_board(pdev, dev, tp->mmio_addr);
2230 pci_set_drvdata(pdev, NULL);
2231 }
2232
2233 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
2234 struct net_device *dev)
2235 {
2236 unsigned int mtu = dev->mtu;
2237
2238 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
2239 }
2240
2241 static int rtl8169_open(struct net_device *dev)
2242 {
2243 struct rtl8169_private *tp = netdev_priv(dev);
2244 struct pci_dev *pdev = tp->pci_dev;
2245 int retval = -ENOMEM;
2246
2247
2248 rtl8169_set_rxbufsize(tp, dev);
2249
2250 /*
2251 * Rx and Tx desscriptors needs 256 bytes alignment.
2252 * pci_alloc_consistent provides more.
2253 */
2254 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
2255 &tp->TxPhyAddr);
2256 if (!tp->TxDescArray)
2257 goto out;
2258
2259 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2260 &tp->RxPhyAddr);
2261 if (!tp->RxDescArray)
2262 goto err_free_tx_0;
2263
2264 retval = rtl8169_init_ring(dev);
2265 if (retval < 0)
2266 goto err_free_rx_1;
2267
2268 INIT_DELAYED_WORK(&tp->task, NULL);
2269
2270 smp_mb();
2271
2272 retval = request_irq(dev->irq, rtl8169_interrupt,
2273 (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2274 dev->name, dev);
2275 if (retval < 0)
2276 goto err_release_ring_2;
2277
2278 napi_enable(&tp->napi);
2279
2280 rtl_hw_start(dev);
2281
2282 rtl8169_request_timer(dev);
2283
2284 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2285 out:
2286 return retval;
2287
2288 err_release_ring_2:
2289 rtl8169_rx_clear(tp);
2290 err_free_rx_1:
2291 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2292 tp->RxPhyAddr);
2293 err_free_tx_0:
2294 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2295 tp->TxPhyAddr);
2296 goto out;
2297 }
2298
2299 static void rtl8169_hw_reset(void __iomem *ioaddr)
2300 {
2301 /* Disable interrupts */
2302 rtl8169_irq_mask_and_ack(ioaddr);
2303
2304 /* Reset the chipset */
2305 RTL_W8(ChipCmd, CmdReset);
2306
2307 /* PCI commit */
2308 RTL_R8(ChipCmd);
2309 }
2310
2311 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2312 {
2313 void __iomem *ioaddr = tp->mmio_addr;
2314 u32 cfg = rtl8169_rx_config;
2315
2316 cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2317 RTL_W32(RxConfig, cfg);
2318
2319 /* Set DMA burst size and Interframe Gap Time */
2320 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2321 (InterFrameGap << TxInterFrameGapShift));
2322 }
2323
2324 static void rtl_hw_start(struct net_device *dev)
2325 {
2326 struct rtl8169_private *tp = netdev_priv(dev);
2327 void __iomem *ioaddr = tp->mmio_addr;
2328 unsigned int i;
2329
2330 /* Soft reset the chip. */
2331 RTL_W8(ChipCmd, CmdReset);
2332
2333 /* Check that the chip has finished the reset. */
2334 for (i = 0; i < 100; i++) {
2335 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2336 break;
2337 msleep_interruptible(1);
2338 }
2339
2340 tp->hw_start(dev);
2341
2342 netif_start_queue(dev);
2343 }
2344
2345
2346 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2347 void __iomem *ioaddr)
2348 {
2349 /*
2350 * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2351 * register to be written before TxDescAddrLow to work.
2352 * Switching from MMIO to I/O access fixes the issue as well.
2353 */
2354 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2355 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_BIT_MASK(32));
2356 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2357 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_BIT_MASK(32));
2358 }
2359
2360 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2361 {
2362 u16 cmd;
2363
2364 cmd = RTL_R16(CPlusCmd);
2365 RTL_W16(CPlusCmd, cmd);
2366 return cmd;
2367 }
2368
2369 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2370 {
2371 /* Low hurts. Let's disable the filtering. */
2372 RTL_W16(RxMaxSize, 16383);
2373 }
2374
2375 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2376 {
2377 struct {
2378 u32 mac_version;
2379 u32 clk;
2380 u32 val;
2381 } cfg2_info [] = {
2382 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2383 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2384 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2385 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2386 }, *p = cfg2_info;
2387 unsigned int i;
2388 u32 clk;
2389
2390 clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2391 for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2392 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2393 RTL_W32(0x7c, p->val);
2394 break;
2395 }
2396 }
2397 }
2398
2399 static void rtl_hw_start_8169(struct net_device *dev)
2400 {
2401 struct rtl8169_private *tp = netdev_priv(dev);
2402 void __iomem *ioaddr = tp->mmio_addr;
2403 struct pci_dev *pdev = tp->pci_dev;
2404
2405 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2406 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2407 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2408 }
2409
2410 RTL_W8(Cfg9346, Cfg9346_Unlock);
2411 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2412 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2413 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2414 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2415 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2416
2417 RTL_W8(EarlyTxThres, EarlyTxThld);
2418
2419 rtl_set_rx_max_size(ioaddr);
2420
2421 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2422 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2423 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2424 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2425 rtl_set_rx_tx_config_registers(tp);
2426
2427 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2428
2429 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2430 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2431 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2432 "Bit-3 and bit-14 MUST be 1\n");
2433 tp->cp_cmd |= (1 << 14);
2434 }
2435
2436 RTL_W16(CPlusCmd, tp->cp_cmd);
2437
2438 rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2439
2440 /*
2441 * Undocumented corner. Supposedly:
2442 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2443 */
2444 RTL_W16(IntrMitigate, 0x0000);
2445
2446 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2447
2448 if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2449 (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2450 (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2451 (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2452 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2453 rtl_set_rx_tx_config_registers(tp);
2454 }
2455
2456 RTL_W8(Cfg9346, Cfg9346_Lock);
2457
2458 /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2459 RTL_R8(IntrMask);
2460
2461 RTL_W32(RxMissed, 0);
2462
2463 rtl_set_rx_mode(dev);
2464
2465 /* no early-rx interrupts */
2466 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2467
2468 /* Enable all known interrupts by setting the interrupt mask. */
2469 RTL_W16(IntrMask, tp->intr_event);
2470 }
2471
2472 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2473 {
2474 struct net_device *dev = pci_get_drvdata(pdev);
2475 struct rtl8169_private *tp = netdev_priv(dev);
2476 int cap = tp->pcie_cap;
2477
2478 if (cap) {
2479 u16 ctl;
2480
2481 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2482 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2483 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2484 }
2485 }
2486
2487 static void rtl_csi_access_enable(void __iomem *ioaddr)
2488 {
2489 u32 csi;
2490
2491 csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2492 rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2493 }
2494
2495 struct ephy_info {
2496 unsigned int offset;
2497 u16 mask;
2498 u16 bits;
2499 };
2500
2501 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2502 {
2503 u16 w;
2504
2505 while (len-- > 0) {
2506 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2507 rtl_ephy_write(ioaddr, e->offset, w);
2508 e++;
2509 }
2510 }
2511
2512 static void rtl_disable_clock_request(struct pci_dev *pdev)
2513 {
2514 struct net_device *dev = pci_get_drvdata(pdev);
2515 struct rtl8169_private *tp = netdev_priv(dev);
2516 int cap = tp->pcie_cap;
2517
2518 if (cap) {
2519 u16 ctl;
2520
2521 pci_read_config_word(pdev, cap + PCI_EXP_LNKCTL, &ctl);
2522 ctl &= ~PCI_EXP_LNKCTL_CLKREQ_EN;
2523 pci_write_config_word(pdev, cap + PCI_EXP_LNKCTL, ctl);
2524 }
2525 }
2526
2527 #define R8168_CPCMD_QUIRK_MASK (\
2528 EnableBist | \
2529 Mac_dbgo_oe | \
2530 Force_half_dup | \
2531 Force_rxflow_en | \
2532 Force_txflow_en | \
2533 Cxpl_dbg_sel | \
2534 ASF | \
2535 PktCntrDisable | \
2536 Mac_dbgo_sel)
2537
2538 static void rtl_hw_start_8168bb(void __iomem *ioaddr, struct pci_dev *pdev)
2539 {
2540 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2541
2542 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2543
2544 rtl_tx_performance_tweak(pdev,
2545 (0x5 << MAX_READ_REQUEST_SHIFT) | PCI_EXP_DEVCTL_NOSNOOP_EN);
2546 }
2547
2548 static void rtl_hw_start_8168bef(void __iomem *ioaddr, struct pci_dev *pdev)
2549 {
2550 rtl_hw_start_8168bb(ioaddr, pdev);
2551
2552 RTL_W8(EarlyTxThres, EarlyTxThld);
2553
2554 RTL_W8(Config4, RTL_R8(Config4) & ~(1 << 0));
2555 }
2556
2557 static void __rtl_hw_start_8168cp(void __iomem *ioaddr, struct pci_dev *pdev)
2558 {
2559 RTL_W8(Config1, RTL_R8(Config1) | Speed_down);
2560
2561 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2562
2563 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2564
2565 rtl_disable_clock_request(pdev);
2566
2567 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2568 }
2569
2570 static void rtl_hw_start_8168cp_1(void __iomem *ioaddr, struct pci_dev *pdev)
2571 {
2572 static struct ephy_info e_info_8168cp[] = {
2573 { 0x01, 0, 0x0001 },
2574 { 0x02, 0x0800, 0x1000 },
2575 { 0x03, 0, 0x0042 },
2576 { 0x06, 0x0080, 0x0000 },
2577 { 0x07, 0, 0x2000 }
2578 };
2579
2580 rtl_csi_access_enable(ioaddr);
2581
2582 rtl_ephy_init(ioaddr, e_info_8168cp, ARRAY_SIZE(e_info_8168cp));
2583
2584 __rtl_hw_start_8168cp(ioaddr, pdev);
2585 }
2586
2587 static void rtl_hw_start_8168cp_2(void __iomem *ioaddr, struct pci_dev *pdev)
2588 {
2589 rtl_csi_access_enable(ioaddr);
2590
2591 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2592
2593 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2594
2595 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2596 }
2597
2598 static void rtl_hw_start_8168cp_3(void __iomem *ioaddr, struct pci_dev *pdev)
2599 {
2600 rtl_csi_access_enable(ioaddr);
2601
2602 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2603
2604 /* Magic. */
2605 RTL_W8(DBG_REG, 0x20);
2606
2607 RTL_W8(EarlyTxThres, EarlyTxThld);
2608
2609 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2610
2611 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2612 }
2613
2614 static void rtl_hw_start_8168c_1(void __iomem *ioaddr, struct pci_dev *pdev)
2615 {
2616 static struct ephy_info e_info_8168c_1[] = {
2617 { 0x02, 0x0800, 0x1000 },
2618 { 0x03, 0, 0x0002 },
2619 { 0x06, 0x0080, 0x0000 }
2620 };
2621
2622 rtl_csi_access_enable(ioaddr);
2623
2624 RTL_W8(DBG_REG, 0x06 | FIX_NAK_1 | FIX_NAK_2);
2625
2626 rtl_ephy_init(ioaddr, e_info_8168c_1, ARRAY_SIZE(e_info_8168c_1));
2627
2628 __rtl_hw_start_8168cp(ioaddr, pdev);
2629 }
2630
2631 static void rtl_hw_start_8168c_2(void __iomem *ioaddr, struct pci_dev *pdev)
2632 {
2633 static struct ephy_info e_info_8168c_2[] = {
2634 { 0x01, 0, 0x0001 },
2635 { 0x03, 0x0400, 0x0220 }
2636 };
2637
2638 rtl_csi_access_enable(ioaddr);
2639
2640 rtl_ephy_init(ioaddr, e_info_8168c_2, ARRAY_SIZE(e_info_8168c_2));
2641
2642 __rtl_hw_start_8168cp(ioaddr, pdev);
2643 }
2644
2645 static void rtl_hw_start_8168c_3(void __iomem *ioaddr, struct pci_dev *pdev)
2646 {
2647 rtl_hw_start_8168c_2(ioaddr, pdev);
2648 }
2649
2650 static void rtl_hw_start_8168c_4(void __iomem *ioaddr, struct pci_dev *pdev)
2651 {
2652 rtl_csi_access_enable(ioaddr);
2653
2654 __rtl_hw_start_8168cp(ioaddr, pdev);
2655 }
2656
2657 static void rtl_hw_start_8168d(void __iomem *ioaddr, struct pci_dev *pdev)
2658 {
2659 rtl_csi_access_enable(ioaddr);
2660
2661 rtl_disable_clock_request(pdev);
2662
2663 RTL_W8(EarlyTxThres, EarlyTxThld);
2664
2665 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2666
2667 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2668 }
2669
2670 static void rtl_hw_start_8168(struct net_device *dev)
2671 {
2672 struct rtl8169_private *tp = netdev_priv(dev);
2673 void __iomem *ioaddr = tp->mmio_addr;
2674 struct pci_dev *pdev = tp->pci_dev;
2675
2676 RTL_W8(Cfg9346, Cfg9346_Unlock);
2677
2678 RTL_W8(EarlyTxThres, EarlyTxThld);
2679
2680 rtl_set_rx_max_size(ioaddr);
2681
2682 tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2683
2684 RTL_W16(CPlusCmd, tp->cp_cmd);
2685
2686 RTL_W16(IntrMitigate, 0x5151);
2687
2688 /* Work around for RxFIFO overflow. */
2689 if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2690 tp->intr_event |= RxFIFOOver | PCSTimeout;
2691 tp->intr_event &= ~RxOverflow;
2692 }
2693
2694 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2695
2696 rtl_set_rx_mode(dev);
2697
2698 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2699 (InterFrameGap << TxInterFrameGapShift));
2700
2701 RTL_R8(IntrMask);
2702
2703 switch (tp->mac_version) {
2704 case RTL_GIGA_MAC_VER_11:
2705 rtl_hw_start_8168bb(ioaddr, pdev);
2706 break;
2707
2708 case RTL_GIGA_MAC_VER_12:
2709 case RTL_GIGA_MAC_VER_17:
2710 rtl_hw_start_8168bef(ioaddr, pdev);
2711 break;
2712
2713 case RTL_GIGA_MAC_VER_18:
2714 rtl_hw_start_8168cp_1(ioaddr, pdev);
2715 break;
2716
2717 case RTL_GIGA_MAC_VER_19:
2718 rtl_hw_start_8168c_1(ioaddr, pdev);
2719 break;
2720
2721 case RTL_GIGA_MAC_VER_20:
2722 rtl_hw_start_8168c_2(ioaddr, pdev);
2723 break;
2724
2725 case RTL_GIGA_MAC_VER_21:
2726 rtl_hw_start_8168c_3(ioaddr, pdev);
2727 break;
2728
2729 case RTL_GIGA_MAC_VER_22:
2730 rtl_hw_start_8168c_4(ioaddr, pdev);
2731 break;
2732
2733 case RTL_GIGA_MAC_VER_23:
2734 rtl_hw_start_8168cp_2(ioaddr, pdev);
2735 break;
2736
2737 case RTL_GIGA_MAC_VER_24:
2738 rtl_hw_start_8168cp_3(ioaddr, pdev);
2739 break;
2740
2741 case RTL_GIGA_MAC_VER_25:
2742 rtl_hw_start_8168d(ioaddr, pdev);
2743 break;
2744
2745 default:
2746 printk(KERN_ERR PFX "%s: unknown chipset (mac_version = %d).\n",
2747 dev->name, tp->mac_version);
2748 break;
2749 }
2750
2751 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2752
2753 RTL_W8(Cfg9346, Cfg9346_Lock);
2754
2755 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2756
2757 RTL_W16(IntrMask, tp->intr_event);
2758 }
2759
2760 #define R810X_CPCMD_QUIRK_MASK (\
2761 EnableBist | \
2762 Mac_dbgo_oe | \
2763 Force_half_dup | \
2764 Force_half_dup | \
2765 Force_txflow_en | \
2766 Cxpl_dbg_sel | \
2767 ASF | \
2768 PktCntrDisable | \
2769 PCIDAC | \
2770 PCIMulRW)
2771
2772 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2773 {
2774 static struct ephy_info e_info_8102e_1[] = {
2775 { 0x01, 0, 0x6e65 },
2776 { 0x02, 0, 0x091f },
2777 { 0x03, 0, 0xc2f9 },
2778 { 0x06, 0, 0xafb5 },
2779 { 0x07, 0, 0x0e00 },
2780 { 0x19, 0, 0xec80 },
2781 { 0x01, 0, 0x2e65 },
2782 { 0x01, 0, 0x6e65 }
2783 };
2784 u8 cfg1;
2785
2786 rtl_csi_access_enable(ioaddr);
2787
2788 RTL_W8(DBG_REG, FIX_NAK_1);
2789
2790 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2791
2792 RTL_W8(Config1,
2793 LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2794 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2795
2796 cfg1 = RTL_R8(Config1);
2797 if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2798 RTL_W8(Config1, cfg1 & ~LEDS0);
2799
2800 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2801
2802 rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2803 }
2804
2805 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2806 {
2807 rtl_csi_access_enable(ioaddr);
2808
2809 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2810
2811 RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2812 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2813
2814 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2815 }
2816
2817 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2818 {
2819 rtl_hw_start_8102e_2(ioaddr, pdev);
2820
2821 rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2822 }
2823
2824 static void rtl_hw_start_8101(struct net_device *dev)
2825 {
2826 struct rtl8169_private *tp = netdev_priv(dev);
2827 void __iomem *ioaddr = tp->mmio_addr;
2828 struct pci_dev *pdev = tp->pci_dev;
2829
2830 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2831 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2832 int cap = tp->pcie_cap;
2833
2834 if (cap) {
2835 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2836 PCI_EXP_DEVCTL_NOSNOOP_EN);
2837 }
2838 }
2839
2840 switch (tp->mac_version) {
2841 case RTL_GIGA_MAC_VER_07:
2842 rtl_hw_start_8102e_1(ioaddr, pdev);
2843 break;
2844
2845 case RTL_GIGA_MAC_VER_08:
2846 rtl_hw_start_8102e_3(ioaddr, pdev);
2847 break;
2848
2849 case RTL_GIGA_MAC_VER_09:
2850 rtl_hw_start_8102e_2(ioaddr, pdev);
2851 break;
2852 }
2853
2854 RTL_W8(Cfg9346, Cfg9346_Unlock);
2855
2856 RTL_W8(EarlyTxThres, EarlyTxThld);
2857
2858 rtl_set_rx_max_size(ioaddr);
2859
2860 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2861
2862 RTL_W16(CPlusCmd, tp->cp_cmd);
2863
2864 RTL_W16(IntrMitigate, 0x0000);
2865
2866 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2867
2868 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2869 rtl_set_rx_tx_config_registers(tp);
2870
2871 RTL_W8(Cfg9346, Cfg9346_Lock);
2872
2873 RTL_R8(IntrMask);
2874
2875 rtl_set_rx_mode(dev);
2876
2877 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2878
2879 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2880
2881 RTL_W16(IntrMask, tp->intr_event);
2882 }
2883
2884 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2885 {
2886 struct rtl8169_private *tp = netdev_priv(dev);
2887 int ret = 0;
2888
2889 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2890 return -EINVAL;
2891
2892 dev->mtu = new_mtu;
2893
2894 if (!netif_running(dev))
2895 goto out;
2896
2897 rtl8169_down(dev);
2898
2899 rtl8169_set_rxbufsize(tp, dev);
2900
2901 ret = rtl8169_init_ring(dev);
2902 if (ret < 0)
2903 goto out;
2904
2905 napi_enable(&tp->napi);
2906
2907 rtl_hw_start(dev);
2908
2909 rtl8169_request_timer(dev);
2910
2911 out:
2912 return ret;
2913 }
2914
2915 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2916 {
2917 desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2918 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2919 }
2920
2921 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2922 struct sk_buff **sk_buff, struct RxDesc *desc)
2923 {
2924 struct pci_dev *pdev = tp->pci_dev;
2925
2926 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2927 PCI_DMA_FROMDEVICE);
2928 dev_kfree_skb(*sk_buff);
2929 *sk_buff = NULL;
2930 rtl8169_make_unusable_by_asic(desc);
2931 }
2932
2933 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2934 {
2935 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2936
2937 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2938 }
2939
2940 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2941 u32 rx_buf_sz)
2942 {
2943 desc->addr = cpu_to_le64(mapping);
2944 wmb();
2945 rtl8169_mark_to_asic(desc, rx_buf_sz);
2946 }
2947
2948 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2949 struct net_device *dev,
2950 struct RxDesc *desc, int rx_buf_sz,
2951 unsigned int align)
2952 {
2953 struct sk_buff *skb;
2954 dma_addr_t mapping;
2955 unsigned int pad;
2956
2957 pad = align ? align : NET_IP_ALIGN;
2958
2959 skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2960 if (!skb)
2961 goto err_out;
2962
2963 skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2964
2965 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2966 PCI_DMA_FROMDEVICE);
2967
2968 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2969 out:
2970 return skb;
2971
2972 err_out:
2973 rtl8169_make_unusable_by_asic(desc);
2974 goto out;
2975 }
2976
2977 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2978 {
2979 unsigned int i;
2980
2981 for (i = 0; i < NUM_RX_DESC; i++) {
2982 if (tp->Rx_skbuff[i]) {
2983 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2984 tp->RxDescArray + i);
2985 }
2986 }
2987 }
2988
2989 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2990 u32 start, u32 end)
2991 {
2992 u32 cur;
2993
2994 for (cur = start; end - cur != 0; cur++) {
2995 struct sk_buff *skb;
2996 unsigned int i = cur % NUM_RX_DESC;
2997
2998 WARN_ON((s32)(end - cur) < 0);
2999
3000 if (tp->Rx_skbuff[i])
3001 continue;
3002
3003 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
3004 tp->RxDescArray + i,
3005 tp->rx_buf_sz, tp->align);
3006 if (!skb)
3007 break;
3008
3009 tp->Rx_skbuff[i] = skb;
3010 }
3011 return cur - start;
3012 }
3013
3014 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
3015 {
3016 desc->opts1 |= cpu_to_le32(RingEnd);
3017 }
3018
3019 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
3020 {
3021 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
3022 }
3023
3024 static int rtl8169_init_ring(struct net_device *dev)
3025 {
3026 struct rtl8169_private *tp = netdev_priv(dev);
3027
3028 rtl8169_init_ring_indexes(tp);
3029
3030 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
3031 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
3032
3033 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
3034 goto err_out;
3035
3036 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
3037
3038 return 0;
3039
3040 err_out:
3041 rtl8169_rx_clear(tp);
3042 return -ENOMEM;
3043 }
3044
3045 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
3046 struct TxDesc *desc)
3047 {
3048 unsigned int len = tx_skb->len;
3049
3050 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
3051 desc->opts1 = 0x00;
3052 desc->opts2 = 0x00;
3053 desc->addr = 0x00;
3054 tx_skb->len = 0;
3055 }
3056
3057 static void rtl8169_tx_clear(struct rtl8169_private *tp)
3058 {
3059 unsigned int i;
3060
3061 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
3062 unsigned int entry = i % NUM_TX_DESC;
3063 struct ring_info *tx_skb = tp->tx_skb + entry;
3064 unsigned int len = tx_skb->len;
3065
3066 if (len) {
3067 struct sk_buff *skb = tx_skb->skb;
3068
3069 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
3070 tp->TxDescArray + entry);
3071 if (skb) {
3072 dev_kfree_skb(skb);
3073 tx_skb->skb = NULL;
3074 }
3075 tp->dev->stats.tx_dropped++;
3076 }
3077 }
3078 tp->cur_tx = tp->dirty_tx = 0;
3079 }
3080
3081 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
3082 {
3083 struct rtl8169_private *tp = netdev_priv(dev);
3084
3085 PREPARE_DELAYED_WORK(&tp->task, task);
3086 schedule_delayed_work(&tp->task, 4);
3087 }
3088
3089 static void rtl8169_wait_for_quiescence(struct net_device *dev)
3090 {
3091 struct rtl8169_private *tp = netdev_priv(dev);
3092 void __iomem *ioaddr = tp->mmio_addr;
3093
3094 synchronize_irq(dev->irq);
3095
3096 /* Wait for any pending NAPI task to complete */
3097 napi_disable(&tp->napi);
3098
3099 rtl8169_irq_mask_and_ack(ioaddr);
3100
3101 tp->intr_mask = 0xffff;
3102 RTL_W16(IntrMask, tp->intr_event);
3103 napi_enable(&tp->napi);
3104 }
3105
3106 static void rtl8169_reinit_task(struct work_struct *work)
3107 {
3108 struct rtl8169_private *tp =
3109 container_of(work, struct rtl8169_private, task.work);
3110 struct net_device *dev = tp->dev;
3111 int ret;
3112
3113 rtnl_lock();
3114
3115 if (!netif_running(dev))
3116 goto out_unlock;
3117
3118 rtl8169_wait_for_quiescence(dev);
3119 rtl8169_close(dev);
3120
3121 ret = rtl8169_open(dev);
3122 if (unlikely(ret < 0)) {
3123 if (net_ratelimit() && netif_msg_drv(tp)) {
3124 printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
3125 " Rescheduling.\n", dev->name, ret);
3126 }
3127 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3128 }
3129
3130 out_unlock:
3131 rtnl_unlock();
3132 }
3133
3134 static void rtl8169_reset_task(struct work_struct *work)
3135 {
3136 struct rtl8169_private *tp =
3137 container_of(work, struct rtl8169_private, task.work);
3138 struct net_device *dev = tp->dev;
3139
3140 rtnl_lock();
3141
3142 if (!netif_running(dev))
3143 goto out_unlock;
3144
3145 rtl8169_wait_for_quiescence(dev);
3146
3147 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
3148 rtl8169_tx_clear(tp);
3149
3150 if (tp->dirty_rx == tp->cur_rx) {
3151 rtl8169_init_ring_indexes(tp);
3152 rtl_hw_start(dev);
3153 netif_wake_queue(dev);
3154 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
3155 } else {
3156 if (net_ratelimit() && netif_msg_intr(tp)) {
3157 printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
3158 dev->name);
3159 }
3160 rtl8169_schedule_work(dev, rtl8169_reset_task);
3161 }
3162
3163 out_unlock:
3164 rtnl_unlock();
3165 }
3166
3167 static void rtl8169_tx_timeout(struct net_device *dev)
3168 {
3169 struct rtl8169_private *tp = netdev_priv(dev);
3170
3171 rtl8169_hw_reset(tp->mmio_addr);
3172
3173 /* Let's wait a bit while any (async) irq lands on */
3174 rtl8169_schedule_work(dev, rtl8169_reset_task);
3175 }
3176
3177 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
3178 u32 opts1)
3179 {
3180 struct skb_shared_info *info = skb_shinfo(skb);
3181 unsigned int cur_frag, entry;
3182 struct TxDesc * uninitialized_var(txd);
3183
3184 entry = tp->cur_tx;
3185 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
3186 skb_frag_t *frag = info->frags + cur_frag;
3187 dma_addr_t mapping;
3188 u32 status, len;
3189 void *addr;
3190
3191 entry = (entry + 1) % NUM_TX_DESC;
3192
3193 txd = tp->TxDescArray + entry;
3194 len = frag->size;
3195 addr = ((void *) page_address(frag->page)) + frag->page_offset;
3196 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
3197
3198 /* anti gcc 2.95.3 bugware (sic) */
3199 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3200
3201 txd->opts1 = cpu_to_le32(status);
3202 txd->addr = cpu_to_le64(mapping);
3203
3204 tp->tx_skb[entry].len = len;
3205 }
3206
3207 if (cur_frag) {
3208 tp->tx_skb[entry].skb = skb;
3209 txd->opts1 |= cpu_to_le32(LastFrag);
3210 }
3211
3212 return cur_frag;
3213 }
3214
3215 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
3216 {
3217 if (dev->features & NETIF_F_TSO) {
3218 u32 mss = skb_shinfo(skb)->gso_size;
3219
3220 if (mss)
3221 return LargeSend | ((mss & MSSMask) << MSSShift);
3222 }
3223 if (skb->ip_summed == CHECKSUM_PARTIAL) {
3224 const struct iphdr *ip = ip_hdr(skb);
3225
3226 if (ip->protocol == IPPROTO_TCP)
3227 return IPCS | TCPCS;
3228 else if (ip->protocol == IPPROTO_UDP)
3229 return IPCS | UDPCS;
3230 WARN_ON(1); /* we need a WARN() */
3231 }
3232 return 0;
3233 }
3234
3235 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
3236 {
3237 struct rtl8169_private *tp = netdev_priv(dev);
3238 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
3239 struct TxDesc *txd = tp->TxDescArray + entry;
3240 void __iomem *ioaddr = tp->mmio_addr;
3241 dma_addr_t mapping;
3242 u32 status, len;
3243 u32 opts1;
3244 int ret = NETDEV_TX_OK;
3245
3246 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
3247 if (netif_msg_drv(tp)) {
3248 printk(KERN_ERR
3249 "%s: BUG! Tx Ring full when queue awake!\n",
3250 dev->name);
3251 }
3252 goto err_stop;
3253 }
3254
3255 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
3256 goto err_stop;
3257
3258 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
3259
3260 frags = rtl8169_xmit_frags(tp, skb, opts1);
3261 if (frags) {
3262 len = skb_headlen(skb);
3263 opts1 |= FirstFrag;
3264 } else {
3265 len = skb->len;
3266 opts1 |= FirstFrag | LastFrag;
3267 tp->tx_skb[entry].skb = skb;
3268 }
3269
3270 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
3271
3272 tp->tx_skb[entry].len = len;
3273 txd->addr = cpu_to_le64(mapping);
3274 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
3275
3276 wmb();
3277
3278 /* anti gcc 2.95.3 bugware (sic) */
3279 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3280 txd->opts1 = cpu_to_le32(status);
3281
3282 tp->cur_tx += frags + 1;
3283
3284 smp_wmb();
3285
3286 RTL_W8(TxPoll, NPQ); /* set polling bit */
3287
3288 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
3289 netif_stop_queue(dev);
3290 smp_rmb();
3291 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
3292 netif_wake_queue(dev);
3293 }
3294
3295 out:
3296 return ret;
3297
3298 err_stop:
3299 netif_stop_queue(dev);
3300 ret = NETDEV_TX_BUSY;
3301 dev->stats.tx_dropped++;
3302 goto out;
3303 }
3304
3305 static void rtl8169_pcierr_interrupt(struct net_device *dev)
3306 {
3307 struct rtl8169_private *tp = netdev_priv(dev);
3308 struct pci_dev *pdev = tp->pci_dev;
3309 void __iomem *ioaddr = tp->mmio_addr;
3310 u16 pci_status, pci_cmd;
3311
3312 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
3313 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
3314
3315 if (netif_msg_intr(tp)) {
3316 printk(KERN_ERR
3317 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
3318 dev->name, pci_cmd, pci_status);
3319 }
3320
3321 /*
3322 * The recovery sequence below admits a very elaborated explanation:
3323 * - it seems to work;
3324 * - I did not see what else could be done;
3325 * - it makes iop3xx happy.
3326 *
3327 * Feel free to adjust to your needs.
3328 */
3329 if (pdev->broken_parity_status)
3330 pci_cmd &= ~PCI_COMMAND_PARITY;
3331 else
3332 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
3333
3334 pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
3335
3336 pci_write_config_word(pdev, PCI_STATUS,
3337 pci_status & (PCI_STATUS_DETECTED_PARITY |
3338 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
3339 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
3340
3341 /* The infamous DAC f*ckup only happens at boot time */
3342 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
3343 if (netif_msg_intr(tp))
3344 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
3345 tp->cp_cmd &= ~PCIDAC;
3346 RTL_W16(CPlusCmd, tp->cp_cmd);
3347 dev->features &= ~NETIF_F_HIGHDMA;
3348 }
3349
3350 rtl8169_hw_reset(ioaddr);
3351
3352 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3353 }
3354
3355 static void rtl8169_tx_interrupt(struct net_device *dev,
3356 struct rtl8169_private *tp,
3357 void __iomem *ioaddr)
3358 {
3359 unsigned int dirty_tx, tx_left;
3360
3361 dirty_tx = tp->dirty_tx;
3362 smp_rmb();
3363 tx_left = tp->cur_tx - dirty_tx;
3364
3365 while (tx_left > 0) {
3366 unsigned int entry = dirty_tx % NUM_TX_DESC;
3367 struct ring_info *tx_skb = tp->tx_skb + entry;
3368 u32 len = tx_skb->len;
3369 u32 status;
3370
3371 rmb();
3372 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
3373 if (status & DescOwn)
3374 break;
3375
3376 dev->stats.tx_bytes += len;
3377 dev->stats.tx_packets++;
3378
3379 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
3380
3381 if (status & LastFrag) {
3382 dev_kfree_skb(tx_skb->skb);
3383 tx_skb->skb = NULL;
3384 }
3385 dirty_tx++;
3386 tx_left--;
3387 }
3388
3389 if (tp->dirty_tx != dirty_tx) {
3390 tp->dirty_tx = dirty_tx;
3391 smp_wmb();
3392 if (netif_queue_stopped(dev) &&
3393 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
3394 netif_wake_queue(dev);
3395 }
3396 /*
3397 * 8168 hack: TxPoll requests are lost when the Tx packets are
3398 * too close. Let's kick an extra TxPoll request when a burst
3399 * of start_xmit activity is detected (if it is not detected,
3400 * it is slow enough). -- FR
3401 */
3402 smp_rmb();
3403 if (tp->cur_tx != dirty_tx)
3404 RTL_W8(TxPoll, NPQ);
3405 }
3406 }
3407
3408 static inline int rtl8169_fragmented_frame(u32 status)
3409 {
3410 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
3411 }
3412
3413 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
3414 {
3415 u32 opts1 = le32_to_cpu(desc->opts1);
3416 u32 status = opts1 & RxProtoMask;
3417
3418 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
3419 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
3420 ((status == RxProtoIP) && !(opts1 & IPFail)))
3421 skb->ip_summed = CHECKSUM_UNNECESSARY;
3422 else
3423 skb->ip_summed = CHECKSUM_NONE;
3424 }
3425
3426 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
3427 struct rtl8169_private *tp, int pkt_size,
3428 dma_addr_t addr)
3429 {
3430 struct sk_buff *skb;
3431 bool done = false;
3432
3433 if (pkt_size >= rx_copybreak)
3434 goto out;
3435
3436 skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
3437 if (!skb)
3438 goto out;
3439
3440 pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
3441 PCI_DMA_FROMDEVICE);
3442 skb_reserve(skb, NET_IP_ALIGN);
3443 skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
3444 *sk_buff = skb;
3445 done = true;
3446 out:
3447 return done;
3448 }
3449
3450 static int rtl8169_rx_interrupt(struct net_device *dev,
3451 struct rtl8169_private *tp,
3452 void __iomem *ioaddr, u32 budget)
3453 {
3454 unsigned int cur_rx, rx_left;
3455 unsigned int delta, count;
3456
3457 cur_rx = tp->cur_rx;
3458 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3459 rx_left = min(rx_left, budget);
3460
3461 for (; rx_left > 0; rx_left--, cur_rx++) {
3462 unsigned int entry = cur_rx % NUM_RX_DESC;
3463 struct RxDesc *desc = tp->RxDescArray + entry;
3464 u32 status;
3465
3466 rmb();
3467 status = le32_to_cpu(desc->opts1);
3468
3469 if (status & DescOwn)
3470 break;
3471 if (unlikely(status & RxRES)) {
3472 if (netif_msg_rx_err(tp)) {
3473 printk(KERN_INFO
3474 "%s: Rx ERROR. status = %08x\n",
3475 dev->name, status);
3476 }
3477 dev->stats.rx_errors++;
3478 if (status & (RxRWT | RxRUNT))
3479 dev->stats.rx_length_errors++;
3480 if (status & RxCRC)
3481 dev->stats.rx_crc_errors++;
3482 if (status & RxFOVF) {
3483 rtl8169_schedule_work(dev, rtl8169_reset_task);
3484 dev->stats.rx_fifo_errors++;
3485 }
3486 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3487 } else {
3488 struct sk_buff *skb = tp->Rx_skbuff[entry];
3489 dma_addr_t addr = le64_to_cpu(desc->addr);
3490 int pkt_size = (status & 0x00001FFF) - 4;
3491 struct pci_dev *pdev = tp->pci_dev;
3492
3493 /*
3494 * The driver does not support incoming fragmented
3495 * frames. They are seen as a symptom of over-mtu
3496 * sized frames.
3497 */
3498 if (unlikely(rtl8169_fragmented_frame(status))) {
3499 dev->stats.rx_dropped++;
3500 dev->stats.rx_length_errors++;
3501 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3502 continue;
3503 }
3504
3505 rtl8169_rx_csum(skb, desc);
3506
3507 if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3508 pci_dma_sync_single_for_device(pdev, addr,
3509 pkt_size, PCI_DMA_FROMDEVICE);
3510 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3511 } else {
3512 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3513 PCI_DMA_FROMDEVICE);
3514 tp->Rx_skbuff[entry] = NULL;
3515 }
3516
3517 skb_put(skb, pkt_size);
3518 skb->protocol = eth_type_trans(skb, dev);
3519
3520 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3521 netif_receive_skb(skb);
3522
3523 dev->stats.rx_bytes += pkt_size;
3524 dev->stats.rx_packets++;
3525 }
3526
3527 /* Work around for AMD plateform. */
3528 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3529 (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3530 desc->opts2 = 0;
3531 cur_rx++;
3532 }
3533 }
3534
3535 count = cur_rx - tp->cur_rx;
3536 tp->cur_rx = cur_rx;
3537
3538 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3539 if (!delta && count && netif_msg_intr(tp))
3540 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3541 tp->dirty_rx += delta;
3542
3543 /*
3544 * FIXME: until there is periodic timer to try and refill the ring,
3545 * a temporary shortage may definitely kill the Rx process.
3546 * - disable the asic to try and avoid an overflow and kick it again
3547 * after refill ?
3548 * - how do others driver handle this condition (Uh oh...).
3549 */
3550 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3551 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3552
3553 return count;
3554 }
3555
3556 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3557 {
3558 struct net_device *dev = dev_instance;
3559 struct rtl8169_private *tp = netdev_priv(dev);
3560 void __iomem *ioaddr = tp->mmio_addr;
3561 int handled = 0;
3562 int status;
3563
3564 /* loop handling interrupts until we have no new ones or
3565 * we hit a invalid/hotplug case.
3566 */
3567 status = RTL_R16(IntrStatus);
3568 while (status && status != 0xffff) {
3569 handled = 1;
3570
3571 /* Handle all of the error cases first. These will reset
3572 * the chip, so just exit the loop.
3573 */
3574 if (unlikely(!netif_running(dev))) {
3575 rtl8169_asic_down(ioaddr);
3576 break;
3577 }
3578
3579 /* Work around for rx fifo overflow */
3580 if (unlikely(status & RxFIFOOver) &&
3581 (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3582 netif_stop_queue(dev);
3583 rtl8169_tx_timeout(dev);
3584 break;
3585 }
3586
3587 if (unlikely(status & SYSErr)) {
3588 rtl8169_pcierr_interrupt(dev);
3589 break;
3590 }
3591
3592 if (status & LinkChg)
3593 rtl8169_check_link_status(dev, tp, ioaddr);
3594
3595 /* We need to see the lastest version of tp->intr_mask to
3596 * avoid ignoring an MSI interrupt and having to wait for
3597 * another event which may never come.
3598 */
3599 smp_rmb();
3600 if (status & tp->intr_mask & tp->napi_event) {
3601 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3602 tp->intr_mask = ~tp->napi_event;
3603
3604 if (likely(napi_schedule_prep(&tp->napi)))
3605 __napi_schedule(&tp->napi);
3606 else if (netif_msg_intr(tp)) {
3607 printk(KERN_INFO "%s: interrupt %04x in poll\n",
3608 dev->name, status);
3609 }
3610 }
3611
3612 /* We only get a new MSI interrupt when all active irq
3613 * sources on the chip have been acknowledged. So, ack
3614 * everything we've seen and check if new sources have become
3615 * active to avoid blocking all interrupts from the chip.
3616 */
3617 RTL_W16(IntrStatus,
3618 (status & RxFIFOOver) ? (status | RxOverflow) : status);
3619 status = RTL_R16(IntrStatus);
3620 }
3621
3622 return IRQ_RETVAL(handled);
3623 }
3624
3625 static int rtl8169_poll(struct napi_struct *napi, int budget)
3626 {
3627 struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3628 struct net_device *dev = tp->dev;
3629 void __iomem *ioaddr = tp->mmio_addr;
3630 int work_done;
3631
3632 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3633 rtl8169_tx_interrupt(dev, tp, ioaddr);
3634
3635 if (work_done < budget) {
3636 napi_complete(napi);
3637
3638 /* We need for force the visibility of tp->intr_mask
3639 * for other CPUs, as we can loose an MSI interrupt
3640 * and potentially wait for a retransmit timeout if we don't.
3641 * The posted write to IntrMask is safe, as it will
3642 * eventually make it to the chip and we won't loose anything
3643 * until it does.
3644 */
3645 tp->intr_mask = 0xffff;
3646 smp_wmb();
3647 RTL_W16(IntrMask, tp->intr_event);
3648 }
3649
3650 return work_done;
3651 }
3652
3653 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3654 {
3655 struct rtl8169_private *tp = netdev_priv(dev);
3656
3657 if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3658 return;
3659
3660 dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3661 RTL_W32(RxMissed, 0);
3662 }
3663
3664 static void rtl8169_down(struct net_device *dev)
3665 {
3666 struct rtl8169_private *tp = netdev_priv(dev);
3667 void __iomem *ioaddr = tp->mmio_addr;
3668 unsigned int intrmask;
3669
3670 rtl8169_delete_timer(dev);
3671
3672 netif_stop_queue(dev);
3673
3674 napi_disable(&tp->napi);
3675
3676 core_down:
3677 spin_lock_irq(&tp->lock);
3678
3679 rtl8169_asic_down(ioaddr);
3680
3681 rtl8169_rx_missed(dev, ioaddr);
3682
3683 spin_unlock_irq(&tp->lock);
3684
3685 synchronize_irq(dev->irq);
3686
3687 /* Give a racing hard_start_xmit a few cycles to complete. */
3688 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
3689
3690 /*
3691 * And now for the 50k$ question: are IRQ disabled or not ?
3692 *
3693 * Two paths lead here:
3694 * 1) dev->close
3695 * -> netif_running() is available to sync the current code and the
3696 * IRQ handler. See rtl8169_interrupt for details.
3697 * 2) dev->change_mtu
3698 * -> rtl8169_poll can not be issued again and re-enable the
3699 * interruptions. Let's simply issue the IRQ down sequence again.
3700 *
3701 * No loop if hotpluged or major error (0xffff).
3702 */
3703 intrmask = RTL_R16(IntrMask);
3704 if (intrmask && (intrmask != 0xffff))
3705 goto core_down;
3706
3707 rtl8169_tx_clear(tp);
3708
3709 rtl8169_rx_clear(tp);
3710 }
3711
3712 static int rtl8169_close(struct net_device *dev)
3713 {
3714 struct rtl8169_private *tp = netdev_priv(dev);
3715 struct pci_dev *pdev = tp->pci_dev;
3716
3717 /* update counters before going down */
3718 rtl8169_update_counters(dev);
3719
3720 rtl8169_down(dev);
3721
3722 free_irq(dev->irq, dev);
3723
3724 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3725 tp->RxPhyAddr);
3726 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3727 tp->TxPhyAddr);
3728 tp->TxDescArray = NULL;
3729 tp->RxDescArray = NULL;
3730
3731 return 0;
3732 }
3733
3734 static void rtl_set_rx_mode(struct net_device *dev)
3735 {
3736 struct rtl8169_private *tp = netdev_priv(dev);
3737 void __iomem *ioaddr = tp->mmio_addr;
3738 unsigned long flags;
3739 u32 mc_filter[2]; /* Multicast hash filter */
3740 int rx_mode;
3741 u32 tmp = 0;
3742
3743 if (dev->flags & IFF_PROMISC) {
3744 /* Unconditionally log net taps. */
3745 if (netif_msg_link(tp)) {
3746 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3747 dev->name);
3748 }
3749 rx_mode =
3750 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3751 AcceptAllPhys;
3752 mc_filter[1] = mc_filter[0] = 0xffffffff;
3753 } else if ((dev->mc_count > multicast_filter_limit)
3754 || (dev->flags & IFF_ALLMULTI)) {
3755 /* Too many to filter perfectly -- accept all multicasts. */
3756 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3757 mc_filter[1] = mc_filter[0] = 0xffffffff;
3758 } else {
3759 struct dev_mc_list *mclist;
3760 unsigned int i;
3761
3762 rx_mode = AcceptBroadcast | AcceptMyPhys;
3763 mc_filter[1] = mc_filter[0] = 0;
3764 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3765 i++, mclist = mclist->next) {
3766 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3767 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3768 rx_mode |= AcceptMulticast;
3769 }
3770 }
3771
3772 spin_lock_irqsave(&tp->lock, flags);
3773
3774 tmp = rtl8169_rx_config | rx_mode |
3775 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3776
3777 if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3778 u32 data = mc_filter[0];
3779
3780 mc_filter[0] = swab32(mc_filter[1]);
3781 mc_filter[1] = swab32(data);
3782 }
3783
3784 RTL_W32(MAR0 + 0, mc_filter[0]);
3785 RTL_W32(MAR0 + 4, mc_filter[1]);
3786
3787 RTL_W32(RxConfig, tmp);
3788
3789 spin_unlock_irqrestore(&tp->lock, flags);
3790 }
3791
3792 /**
3793 * rtl8169_get_stats - Get rtl8169 read/write statistics
3794 * @dev: The Ethernet Device to get statistics for
3795 *
3796 * Get TX/RX statistics for rtl8169
3797 */
3798 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3799 {
3800 struct rtl8169_private *tp = netdev_priv(dev);
3801 void __iomem *ioaddr = tp->mmio_addr;
3802 unsigned long flags;
3803
3804 if (netif_running(dev)) {
3805 spin_lock_irqsave(&tp->lock, flags);
3806 rtl8169_rx_missed(dev, ioaddr);
3807 spin_unlock_irqrestore(&tp->lock, flags);
3808 }
3809
3810 return &dev->stats;
3811 }
3812
3813 static void rtl8169_net_suspend(struct net_device *dev)
3814 {
3815 struct rtl8169_private *tp = netdev_priv(dev);
3816 void __iomem *ioaddr = tp->mmio_addr;
3817
3818 if (!netif_running(dev))
3819 return;
3820
3821 netif_device_detach(dev);
3822 netif_stop_queue(dev);
3823
3824 spin_lock_irq(&tp->lock);
3825
3826 rtl8169_asic_down(ioaddr);
3827
3828 rtl8169_rx_missed(dev, ioaddr);
3829
3830 spin_unlock_irq(&tp->lock);
3831 }
3832
3833 #ifdef CONFIG_PM
3834
3835 static int rtl8169_suspend(struct device *device)
3836 {
3837 struct pci_dev *pdev = to_pci_dev(device);
3838 struct net_device *dev = pci_get_drvdata(pdev);
3839
3840 rtl8169_net_suspend(dev);
3841
3842 return 0;
3843 }
3844
3845 static int rtl8169_resume(struct device *device)
3846 {
3847 struct pci_dev *pdev = to_pci_dev(device);
3848 struct net_device *dev = pci_get_drvdata(pdev);
3849
3850 if (!netif_running(dev))
3851 goto out;
3852
3853 netif_device_attach(dev);
3854
3855 rtl8169_schedule_work(dev, rtl8169_reset_task);
3856 out:
3857 return 0;
3858 }
3859
3860 static struct dev_pm_ops rtl8169_pm_ops = {
3861 .suspend = rtl8169_suspend,
3862 .resume = rtl8169_resume,
3863 .freeze = rtl8169_suspend,
3864 .thaw = rtl8169_resume,
3865 .poweroff = rtl8169_suspend,
3866 .restore = rtl8169_resume,
3867 };
3868
3869 #define RTL8169_PM_OPS (&rtl8169_pm_ops)
3870
3871 #else /* !CONFIG_PM */
3872
3873 #define RTL8169_PM_OPS NULL
3874
3875 #endif /* !CONFIG_PM */
3876
3877 static void rtl_shutdown(struct pci_dev *pdev)
3878 {
3879 struct net_device *dev = pci_get_drvdata(pdev);
3880
3881 rtl8169_net_suspend(dev);
3882
3883 if (system_state == SYSTEM_POWER_OFF) {
3884 pci_wake_from_d3(pdev, true);
3885 pci_set_power_state(pdev, PCI_D3hot);
3886 }
3887 }
3888
3889 static struct pci_driver rtl8169_pci_driver = {
3890 .name = MODULENAME,
3891 .id_table = rtl8169_pci_tbl,
3892 .probe = rtl8169_init_one,
3893 .remove = __devexit_p(rtl8169_remove_one),
3894 .shutdown = rtl_shutdown,
3895 .driver.pm = RTL8169_PM_OPS,
3896 };
3897
3898 static int __init rtl8169_init_module(void)
3899 {
3900 return pci_register_driver(&rtl8169_pci_driver);
3901 }
3902
3903 static void __exit rtl8169_cleanup_module(void)
3904 {
3905 pci_unregister_driver(&rtl8169_pci_driver);
3906 }
3907
3908 module_init(rtl8169_init_module);
3909 module_exit(rtl8169_cleanup_module);
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