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r8169: WoL fixes, part 1.
[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 /* write/read MMIO register */
85 #define RTL_W8(reg, val8) writeb ((val8), ioaddr + (reg))
86 #define RTL_W16(reg, val16) writew ((val16), ioaddr + (reg))
87 #define RTL_W32(reg, val32) writel ((val32), ioaddr + (reg))
88 #define RTL_R8(reg) readb (ioaddr + (reg))
89 #define RTL_R16(reg) readw (ioaddr + (reg))
90 #define RTL_R32(reg) ((unsigned long) readl (ioaddr + (reg)))
91
92 enum mac_version {
93 RTL_GIGA_MAC_VER_01 = 0x01, // 8169
94 RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
95 RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
96 RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
97 RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
98 RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
99 RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
100 RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
101 RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
102 RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
103 RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
104 RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
105 RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
106 RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
107 RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
108 RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
109 RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
110 RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
111 RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
112 RTL_GIGA_MAC_VER_20 = 0x14 // 8168C
113 };
114
115 #define _R(NAME,MAC,MASK) \
116 { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
117
118 static const struct {
119 const char *name;
120 u8 mac_version;
121 u32 RxConfigMask; /* Clears the bits supported by this chip */
122 } rtl_chip_info[] = {
123 _R("RTL8169", RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
124 _R("RTL8169s", RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
125 _R("RTL8110s", RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
126 _R("RTL8169sb/8110sb", RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
127 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
128 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
129 _R("RTL8102e", RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
130 _R("RTL8102e", RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
131 _R("RTL8102e", RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
132 _R("RTL8101e", RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
133 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
134 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
135 _R("RTL8101e", RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
136 _R("RTL8100e", RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
137 _R("RTL8100e", RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
138 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
139 _R("RTL8101e", RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
140 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
141 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
142 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_20, 0xff7e1880) // PCI-E
143 };
144 #undef _R
145
146 enum cfg_version {
147 RTL_CFG_0 = 0x00,
148 RTL_CFG_1,
149 RTL_CFG_2
150 };
151
152 static void rtl_hw_start_8169(struct net_device *);
153 static void rtl_hw_start_8168(struct net_device *);
154 static void rtl_hw_start_8101(struct net_device *);
155
156 static struct pci_device_id rtl8169_pci_tbl[] = {
157 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
158 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
159 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167), 0, 0, RTL_CFG_0 },
160 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168), 0, 0, RTL_CFG_1 },
161 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), 0, 0, RTL_CFG_0 },
162 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4300), 0, 0, RTL_CFG_0 },
163 { PCI_DEVICE(PCI_VENDOR_ID_AT, 0xc107), 0, 0, RTL_CFG_0 },
164 { PCI_DEVICE(0x16ec, 0x0116), 0, 0, RTL_CFG_0 },
165 { PCI_VENDOR_ID_LINKSYS, 0x1032,
166 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
167 { 0x0001, 0x8168,
168 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
169 {0,},
170 };
171
172 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
173
174 static int rx_copybreak = 200;
175 static int use_dac;
176 static struct {
177 u32 msg_enable;
178 } debug = { -1 };
179
180 enum rtl_registers {
181 MAC0 = 0, /* Ethernet hardware address. */
182 MAC4 = 4,
183 MAR0 = 8, /* Multicast filter. */
184 CounterAddrLow = 0x10,
185 CounterAddrHigh = 0x14,
186 TxDescStartAddrLow = 0x20,
187 TxDescStartAddrHigh = 0x24,
188 TxHDescStartAddrLow = 0x28,
189 TxHDescStartAddrHigh = 0x2c,
190 FLASH = 0x30,
191 ERSR = 0x36,
192 ChipCmd = 0x37,
193 TxPoll = 0x38,
194 IntrMask = 0x3c,
195 IntrStatus = 0x3e,
196 TxConfig = 0x40,
197 RxConfig = 0x44,
198 RxMissed = 0x4c,
199 Cfg9346 = 0x50,
200 Config0 = 0x51,
201 Config1 = 0x52,
202 Config2 = 0x53,
203 Config3 = 0x54,
204 Config4 = 0x55,
205 Config5 = 0x56,
206 MultiIntr = 0x5c,
207 PHYAR = 0x60,
208 PHYstatus = 0x6c,
209 RxMaxSize = 0xda,
210 CPlusCmd = 0xe0,
211 IntrMitigate = 0xe2,
212 RxDescAddrLow = 0xe4,
213 RxDescAddrHigh = 0xe8,
214 EarlyTxThres = 0xec,
215 FuncEvent = 0xf0,
216 FuncEventMask = 0xf4,
217 FuncPresetState = 0xf8,
218 FuncForceEvent = 0xfc,
219 };
220
221 enum rtl8110_registers {
222 TBICSR = 0x64,
223 TBI_ANAR = 0x68,
224 TBI_LPAR = 0x6a,
225 };
226
227 enum rtl8168_8101_registers {
228 CSIDR = 0x64,
229 CSIAR = 0x68,
230 #define CSIAR_FLAG 0x80000000
231 #define CSIAR_WRITE_CMD 0x80000000
232 #define CSIAR_BYTE_ENABLE 0x0f
233 #define CSIAR_BYTE_ENABLE_SHIFT 12
234 #define CSIAR_ADDR_MASK 0x0fff
235
236 EPHYAR = 0x80,
237 #define EPHYAR_FLAG 0x80000000
238 #define EPHYAR_WRITE_CMD 0x80000000
239 #define EPHYAR_REG_MASK 0x1f
240 #define EPHYAR_REG_SHIFT 16
241 #define EPHYAR_DATA_MASK 0xffff
242 DBG_REG = 0xd1,
243 #define FIX_NAK_1 (1 << 4)
244 #define FIX_NAK_2 (1 << 3)
245 };
246
247 enum rtl_register_content {
248 /* InterruptStatusBits */
249 SYSErr = 0x8000,
250 PCSTimeout = 0x4000,
251 SWInt = 0x0100,
252 TxDescUnavail = 0x0080,
253 RxFIFOOver = 0x0040,
254 LinkChg = 0x0020,
255 RxOverflow = 0x0010,
256 TxErr = 0x0008,
257 TxOK = 0x0004,
258 RxErr = 0x0002,
259 RxOK = 0x0001,
260
261 /* RxStatusDesc */
262 RxFOVF = (1 << 23),
263 RxRWT = (1 << 22),
264 RxRES = (1 << 21),
265 RxRUNT = (1 << 20),
266 RxCRC = (1 << 19),
267
268 /* ChipCmdBits */
269 CmdReset = 0x10,
270 CmdRxEnb = 0x08,
271 CmdTxEnb = 0x04,
272 RxBufEmpty = 0x01,
273
274 /* TXPoll register p.5 */
275 HPQ = 0x80, /* Poll cmd on the high prio queue */
276 NPQ = 0x40, /* Poll cmd on the low prio queue */
277 FSWInt = 0x01, /* Forced software interrupt */
278
279 /* Cfg9346Bits */
280 Cfg9346_Lock = 0x00,
281 Cfg9346_Unlock = 0xc0,
282
283 /* rx_mode_bits */
284 AcceptErr = 0x20,
285 AcceptRunt = 0x10,
286 AcceptBroadcast = 0x08,
287 AcceptMulticast = 0x04,
288 AcceptMyPhys = 0x02,
289 AcceptAllPhys = 0x01,
290
291 /* RxConfigBits */
292 RxCfgFIFOShift = 13,
293 RxCfgDMAShift = 8,
294
295 /* TxConfigBits */
296 TxInterFrameGapShift = 24,
297 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
298
299 /* Config1 register p.24 */
300 LEDS1 = (1 << 7),
301 LEDS0 = (1 << 6),
302 MSIEnable = (1 << 5), /* Enable Message Signaled Interrupt */
303 Speed_down = (1 << 4),
304 MEMMAP = (1 << 3),
305 IOMAP = (1 << 2),
306 VPD = (1 << 1),
307 PMEnable = (1 << 0), /* Power Management Enable */
308
309 /* Config2 register p. 25 */
310 PCI_Clock_66MHz = 0x01,
311 PCI_Clock_33MHz = 0x00,
312
313 /* Config3 register p.25 */
314 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
315 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
316 Beacon_en = (1 << 0), /* 8168 only. Reserved in the 8168b */
317
318 /* Config5 register p.27 */
319 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
320 MWF = (1 << 5), /* Accept Multicast wakeup frame */
321 UWF = (1 << 4), /* Accept Unicast wakeup frame */
322 LanWake = (1 << 1), /* LanWake enable/disable */
323 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
324
325 /* TBICSR p.28 */
326 TBIReset = 0x80000000,
327 TBILoopback = 0x40000000,
328 TBINwEnable = 0x20000000,
329 TBINwRestart = 0x10000000,
330 TBILinkOk = 0x02000000,
331 TBINwComplete = 0x01000000,
332
333 /* CPlusCmd p.31 */
334 EnableBist = (1 << 15), // 8168 8101
335 Mac_dbgo_oe = (1 << 14), // 8168 8101
336 Normal_mode = (1 << 13), // unused
337 Force_half_dup = (1 << 12), // 8168 8101
338 Force_rxflow_en = (1 << 11), // 8168 8101
339 Force_txflow_en = (1 << 10), // 8168 8101
340 Cxpl_dbg_sel = (1 << 9), // 8168 8101
341 ASF = (1 << 8), // 8168 8101
342 PktCntrDisable = (1 << 7), // 8168 8101
343 Mac_dbgo_sel = 0x001c, // 8168
344 RxVlan = (1 << 6),
345 RxChkSum = (1 << 5),
346 PCIDAC = (1 << 4),
347 PCIMulRW = (1 << 3),
348 INTT_0 = 0x0000, // 8168
349 INTT_1 = 0x0001, // 8168
350 INTT_2 = 0x0002, // 8168
351 INTT_3 = 0x0003, // 8168
352
353 /* rtl8169_PHYstatus */
354 TBI_Enable = 0x80,
355 TxFlowCtrl = 0x40,
356 RxFlowCtrl = 0x20,
357 _1000bpsF = 0x10,
358 _100bps = 0x08,
359 _10bps = 0x04,
360 LinkStatus = 0x02,
361 FullDup = 0x01,
362
363 /* _TBICSRBit */
364 TBILinkOK = 0x02000000,
365
366 /* DumpCounterCommand */
367 CounterDump = 0x8,
368 };
369
370 enum desc_status_bit {
371 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
372 RingEnd = (1 << 30), /* End of descriptor ring */
373 FirstFrag = (1 << 29), /* First segment of a packet */
374 LastFrag = (1 << 28), /* Final segment of a packet */
375
376 /* Tx private */
377 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
378 MSSShift = 16, /* MSS value position */
379 MSSMask = 0xfff, /* MSS value + LargeSend bit: 12 bits */
380 IPCS = (1 << 18), /* Calculate IP checksum */
381 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
382 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
383 TxVlanTag = (1 << 17), /* Add VLAN tag */
384
385 /* Rx private */
386 PID1 = (1 << 18), /* Protocol ID bit 1/2 */
387 PID0 = (1 << 17), /* Protocol ID bit 2/2 */
388
389 #define RxProtoUDP (PID1)
390 #define RxProtoTCP (PID0)
391 #define RxProtoIP (PID1 | PID0)
392 #define RxProtoMask RxProtoIP
393
394 IPFail = (1 << 16), /* IP checksum failed */
395 UDPFail = (1 << 15), /* UDP/IP checksum failed */
396 TCPFail = (1 << 14), /* TCP/IP checksum failed */
397 RxVlanTag = (1 << 16), /* VLAN tag available */
398 };
399
400 #define RsvdMask 0x3fffc000
401
402 struct TxDesc {
403 __le32 opts1;
404 __le32 opts2;
405 __le64 addr;
406 };
407
408 struct RxDesc {
409 __le32 opts1;
410 __le32 opts2;
411 __le64 addr;
412 };
413
414 struct ring_info {
415 struct sk_buff *skb;
416 u32 len;
417 u8 __pad[sizeof(void *) - sizeof(u32)];
418 };
419
420 enum features {
421 RTL_FEATURE_WOL = (1 << 0),
422 RTL_FEATURE_MSI = (1 << 1),
423 RTL_FEATURE_GMII = (1 << 2),
424 };
425
426 struct rtl8169_private {
427 void __iomem *mmio_addr; /* memory map physical address */
428 struct pci_dev *pci_dev; /* Index of PCI device */
429 struct net_device *dev;
430 struct napi_struct napi;
431 spinlock_t lock; /* spin lock flag */
432 u32 msg_enable;
433 int chipset;
434 int mac_version;
435 u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
436 u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
437 u32 dirty_rx;
438 u32 dirty_tx;
439 struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
440 struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
441 dma_addr_t TxPhyAddr;
442 dma_addr_t RxPhyAddr;
443 struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
444 struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
445 unsigned align;
446 unsigned rx_buf_sz;
447 struct timer_list timer;
448 u16 cp_cmd;
449 u16 intr_event;
450 u16 napi_event;
451 u16 intr_mask;
452 int phy_auto_nego_reg;
453 int phy_1000_ctrl_reg;
454 #ifdef CONFIG_R8169_VLAN
455 struct vlan_group *vlgrp;
456 #endif
457 int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
458 int (*get_settings)(struct net_device *, struct ethtool_cmd *);
459 void (*phy_reset_enable)(void __iomem *);
460 void (*hw_start)(struct net_device *);
461 unsigned int (*phy_reset_pending)(void __iomem *);
462 unsigned int (*link_ok)(void __iomem *);
463 int pcie_cap;
464 struct delayed_work task;
465 unsigned features;
466
467 struct mii_if_info mii;
468 };
469
470 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
471 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
472 module_param(rx_copybreak, int, 0);
473 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
474 module_param(use_dac, int, 0);
475 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
476 module_param_named(debug, debug.msg_enable, int, 0);
477 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
478 MODULE_LICENSE("GPL");
479 MODULE_VERSION(RTL8169_VERSION);
480
481 static int rtl8169_open(struct net_device *dev);
482 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
483 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
484 static int rtl8169_init_ring(struct net_device *dev);
485 static void rtl_hw_start(struct net_device *dev);
486 static int rtl8169_close(struct net_device *dev);
487 static void rtl_set_rx_mode(struct net_device *dev);
488 static void rtl8169_tx_timeout(struct net_device *dev);
489 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
490 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
491 void __iomem *, u32 budget);
492 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
493 static void rtl8169_down(struct net_device *dev);
494 static void rtl8169_rx_clear(struct rtl8169_private *tp);
495 static int rtl8169_poll(struct napi_struct *napi, int budget);
496
497 static const unsigned int rtl8169_rx_config =
498 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
499
500 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
501 {
502 int i;
503
504 RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
505
506 for (i = 20; i > 0; i--) {
507 /*
508 * Check if the RTL8169 has completed writing to the specified
509 * MII register.
510 */
511 if (!(RTL_R32(PHYAR) & 0x80000000))
512 break;
513 udelay(25);
514 }
515 }
516
517 static int mdio_read(void __iomem *ioaddr, int reg_addr)
518 {
519 int i, value = -1;
520
521 RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
522
523 for (i = 20; i > 0; i--) {
524 /*
525 * Check if the RTL8169 has completed retrieving data from
526 * the specified MII register.
527 */
528 if (RTL_R32(PHYAR) & 0x80000000) {
529 value = RTL_R32(PHYAR) & 0xffff;
530 break;
531 }
532 udelay(25);
533 }
534 return value;
535 }
536
537 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
538 {
539 mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
540 }
541
542 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
543 int val)
544 {
545 struct rtl8169_private *tp = netdev_priv(dev);
546 void __iomem *ioaddr = tp->mmio_addr;
547
548 mdio_write(ioaddr, location, val);
549 }
550
551 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
552 {
553 struct rtl8169_private *tp = netdev_priv(dev);
554 void __iomem *ioaddr = tp->mmio_addr;
555
556 return mdio_read(ioaddr, location);
557 }
558
559 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
560 {
561 unsigned int i;
562
563 RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
564 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
565
566 for (i = 0; i < 100; i++) {
567 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
568 break;
569 udelay(10);
570 }
571 }
572
573 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
574 {
575 u16 value = 0xffff;
576 unsigned int i;
577
578 RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
579
580 for (i = 0; i < 100; i++) {
581 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
582 value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
583 break;
584 }
585 udelay(10);
586 }
587
588 return value;
589 }
590
591 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
592 {
593 unsigned int i;
594
595 RTL_W32(CSIDR, value);
596 RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
597 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
598
599 for (i = 0; i < 100; i++) {
600 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
601 break;
602 udelay(10);
603 }
604 }
605
606 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
607 {
608 u32 value = ~0x00;
609 unsigned int i;
610
611 RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
612 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
613
614 for (i = 0; i < 100; i++) {
615 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
616 value = RTL_R32(CSIDR);
617 break;
618 }
619 udelay(10);
620 }
621
622 return value;
623 }
624
625 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
626 {
627 RTL_W16(IntrMask, 0x0000);
628
629 RTL_W16(IntrStatus, 0xffff);
630 }
631
632 static void rtl8169_asic_down(void __iomem *ioaddr)
633 {
634 RTL_W8(ChipCmd, 0x00);
635 rtl8169_irq_mask_and_ack(ioaddr);
636 RTL_R16(CPlusCmd);
637 }
638
639 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
640 {
641 return RTL_R32(TBICSR) & TBIReset;
642 }
643
644 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
645 {
646 return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
647 }
648
649 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
650 {
651 return RTL_R32(TBICSR) & TBILinkOk;
652 }
653
654 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
655 {
656 return RTL_R8(PHYstatus) & LinkStatus;
657 }
658
659 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
660 {
661 RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
662 }
663
664 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
665 {
666 unsigned int val;
667
668 val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
669 mdio_write(ioaddr, MII_BMCR, val & 0xffff);
670 }
671
672 static void rtl8169_check_link_status(struct net_device *dev,
673 struct rtl8169_private *tp,
674 void __iomem *ioaddr)
675 {
676 unsigned long flags;
677
678 spin_lock_irqsave(&tp->lock, flags);
679 if (tp->link_ok(ioaddr)) {
680 netif_carrier_on(dev);
681 if (netif_msg_ifup(tp))
682 printk(KERN_INFO PFX "%s: link up\n", dev->name);
683 } else {
684 if (netif_msg_ifdown(tp))
685 printk(KERN_INFO PFX "%s: link down\n", dev->name);
686 netif_carrier_off(dev);
687 }
688 spin_unlock_irqrestore(&tp->lock, flags);
689 }
690
691 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
692 {
693 struct rtl8169_private *tp = netdev_priv(dev);
694 void __iomem *ioaddr = tp->mmio_addr;
695 u8 options;
696
697 wol->wolopts = 0;
698
699 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
700 wol->supported = WAKE_ANY;
701
702 spin_lock_irq(&tp->lock);
703
704 options = RTL_R8(Config1);
705 if (!(options & PMEnable))
706 goto out_unlock;
707
708 options = RTL_R8(Config3);
709 if (options & LinkUp)
710 wol->wolopts |= WAKE_PHY;
711 if (options & MagicPacket)
712 wol->wolopts |= WAKE_MAGIC;
713
714 options = RTL_R8(Config5);
715 if (options & UWF)
716 wol->wolopts |= WAKE_UCAST;
717 if (options & BWF)
718 wol->wolopts |= WAKE_BCAST;
719 if (options & MWF)
720 wol->wolopts |= WAKE_MCAST;
721
722 out_unlock:
723 spin_unlock_irq(&tp->lock);
724 }
725
726 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
727 {
728 struct rtl8169_private *tp = netdev_priv(dev);
729 void __iomem *ioaddr = tp->mmio_addr;
730 unsigned int i;
731 static struct {
732 u32 opt;
733 u16 reg;
734 u8 mask;
735 } cfg[] = {
736 { WAKE_ANY, Config1, PMEnable },
737 { WAKE_PHY, Config3, LinkUp },
738 { WAKE_MAGIC, Config3, MagicPacket },
739 { WAKE_UCAST, Config5, UWF },
740 { WAKE_BCAST, Config5, BWF },
741 { WAKE_MCAST, Config5, MWF },
742 { WAKE_ANY, Config5, LanWake }
743 };
744
745 spin_lock_irq(&tp->lock);
746
747 RTL_W8(Cfg9346, Cfg9346_Unlock);
748
749 for (i = 0; i < ARRAY_SIZE(cfg); i++) {
750 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
751 if (wol->wolopts & cfg[i].opt)
752 options |= cfg[i].mask;
753 RTL_W8(cfg[i].reg, options);
754 }
755
756 RTL_W8(Cfg9346, Cfg9346_Lock);
757
758 if (wol->wolopts)
759 tp->features |= RTL_FEATURE_WOL;
760 else
761 tp->features &= ~RTL_FEATURE_WOL;
762
763 spin_unlock_irq(&tp->lock);
764
765 return 0;
766 }
767
768 static void rtl8169_get_drvinfo(struct net_device *dev,
769 struct ethtool_drvinfo *info)
770 {
771 struct rtl8169_private *tp = netdev_priv(dev);
772
773 strcpy(info->driver, MODULENAME);
774 strcpy(info->version, RTL8169_VERSION);
775 strcpy(info->bus_info, pci_name(tp->pci_dev));
776 }
777
778 static int rtl8169_get_regs_len(struct net_device *dev)
779 {
780 return R8169_REGS_SIZE;
781 }
782
783 static int rtl8169_set_speed_tbi(struct net_device *dev,
784 u8 autoneg, u16 speed, u8 duplex)
785 {
786 struct rtl8169_private *tp = netdev_priv(dev);
787 void __iomem *ioaddr = tp->mmio_addr;
788 int ret = 0;
789 u32 reg;
790
791 reg = RTL_R32(TBICSR);
792 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
793 (duplex == DUPLEX_FULL)) {
794 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
795 } else if (autoneg == AUTONEG_ENABLE)
796 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
797 else {
798 if (netif_msg_link(tp)) {
799 printk(KERN_WARNING "%s: "
800 "incorrect speed setting refused in TBI mode\n",
801 dev->name);
802 }
803 ret = -EOPNOTSUPP;
804 }
805
806 return ret;
807 }
808
809 static int rtl8169_set_speed_xmii(struct net_device *dev,
810 u8 autoneg, u16 speed, u8 duplex)
811 {
812 struct rtl8169_private *tp = netdev_priv(dev);
813 void __iomem *ioaddr = tp->mmio_addr;
814 int auto_nego, giga_ctrl;
815
816 auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
817 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
818 ADVERTISE_100HALF | ADVERTISE_100FULL);
819 giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
820 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
821
822 if (autoneg == AUTONEG_ENABLE) {
823 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
824 ADVERTISE_100HALF | ADVERTISE_100FULL);
825 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
826 } else {
827 if (speed == SPEED_10)
828 auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
829 else if (speed == SPEED_100)
830 auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
831 else if (speed == SPEED_1000)
832 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
833
834 if (duplex == DUPLEX_HALF)
835 auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
836
837 if (duplex == DUPLEX_FULL)
838 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
839
840 /* This tweak comes straight from Realtek's driver. */
841 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
842 ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
843 (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
844 auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
845 }
846 }
847
848 /* The 8100e/8101e/8102e do Fast Ethernet only. */
849 if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
850 (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
851 (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
852 (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
853 (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
854 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
855 (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
856 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
857 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
858 netif_msg_link(tp)) {
859 printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
860 dev->name);
861 }
862 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
863 }
864
865 auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
866
867 if ((tp->mac_version == RTL_GIGA_MAC_VER_12) ||
868 (tp->mac_version == RTL_GIGA_MAC_VER_17)) {
869 /* Vendor specific (0x1f) and reserved (0x0e) MII registers. */
870 mdio_write(ioaddr, 0x1f, 0x0000);
871 mdio_write(ioaddr, 0x0e, 0x0000);
872 }
873
874 tp->phy_auto_nego_reg = auto_nego;
875 tp->phy_1000_ctrl_reg = giga_ctrl;
876
877 mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
878 mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
879 mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
880 return 0;
881 }
882
883 static int rtl8169_set_speed(struct net_device *dev,
884 u8 autoneg, u16 speed, u8 duplex)
885 {
886 struct rtl8169_private *tp = netdev_priv(dev);
887 int ret;
888
889 ret = tp->set_speed(dev, autoneg, speed, duplex);
890
891 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
892 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
893
894 return ret;
895 }
896
897 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
898 {
899 struct rtl8169_private *tp = netdev_priv(dev);
900 unsigned long flags;
901 int ret;
902
903 spin_lock_irqsave(&tp->lock, flags);
904 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
905 spin_unlock_irqrestore(&tp->lock, flags);
906
907 return ret;
908 }
909
910 static u32 rtl8169_get_rx_csum(struct net_device *dev)
911 {
912 struct rtl8169_private *tp = netdev_priv(dev);
913
914 return tp->cp_cmd & RxChkSum;
915 }
916
917 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
918 {
919 struct rtl8169_private *tp = netdev_priv(dev);
920 void __iomem *ioaddr = tp->mmio_addr;
921 unsigned long flags;
922
923 spin_lock_irqsave(&tp->lock, flags);
924
925 if (data)
926 tp->cp_cmd |= RxChkSum;
927 else
928 tp->cp_cmd &= ~RxChkSum;
929
930 RTL_W16(CPlusCmd, tp->cp_cmd);
931 RTL_R16(CPlusCmd);
932
933 spin_unlock_irqrestore(&tp->lock, flags);
934
935 return 0;
936 }
937
938 #ifdef CONFIG_R8169_VLAN
939
940 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
941 struct sk_buff *skb)
942 {
943 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
944 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
945 }
946
947 static void rtl8169_vlan_rx_register(struct net_device *dev,
948 struct vlan_group *grp)
949 {
950 struct rtl8169_private *tp = netdev_priv(dev);
951 void __iomem *ioaddr = tp->mmio_addr;
952 unsigned long flags;
953
954 spin_lock_irqsave(&tp->lock, flags);
955 tp->vlgrp = grp;
956 if (tp->vlgrp)
957 tp->cp_cmd |= RxVlan;
958 else
959 tp->cp_cmd &= ~RxVlan;
960 RTL_W16(CPlusCmd, tp->cp_cmd);
961 RTL_R16(CPlusCmd);
962 spin_unlock_irqrestore(&tp->lock, flags);
963 }
964
965 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
966 struct sk_buff *skb)
967 {
968 u32 opts2 = le32_to_cpu(desc->opts2);
969 struct vlan_group *vlgrp = tp->vlgrp;
970 int ret;
971
972 if (vlgrp && (opts2 & RxVlanTag)) {
973 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
974 ret = 0;
975 } else
976 ret = -1;
977 desc->opts2 = 0;
978 return ret;
979 }
980
981 #else /* !CONFIG_R8169_VLAN */
982
983 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
984 struct sk_buff *skb)
985 {
986 return 0;
987 }
988
989 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
990 struct sk_buff *skb)
991 {
992 return -1;
993 }
994
995 #endif
996
997 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
998 {
999 struct rtl8169_private *tp = netdev_priv(dev);
1000 void __iomem *ioaddr = tp->mmio_addr;
1001 u32 status;
1002
1003 cmd->supported =
1004 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1005 cmd->port = PORT_FIBRE;
1006 cmd->transceiver = XCVR_INTERNAL;
1007
1008 status = RTL_R32(TBICSR);
1009 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
1010 cmd->autoneg = !!(status & TBINwEnable);
1011
1012 cmd->speed = SPEED_1000;
1013 cmd->duplex = DUPLEX_FULL; /* Always set */
1014
1015 return 0;
1016 }
1017
1018 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1019 {
1020 struct rtl8169_private *tp = netdev_priv(dev);
1021
1022 return mii_ethtool_gset(&tp->mii, cmd);
1023 }
1024
1025 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1026 {
1027 struct rtl8169_private *tp = netdev_priv(dev);
1028 unsigned long flags;
1029 int rc;
1030
1031 spin_lock_irqsave(&tp->lock, flags);
1032
1033 rc = tp->get_settings(dev, cmd);
1034
1035 spin_unlock_irqrestore(&tp->lock, flags);
1036 return rc;
1037 }
1038
1039 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1040 void *p)
1041 {
1042 struct rtl8169_private *tp = netdev_priv(dev);
1043 unsigned long flags;
1044
1045 if (regs->len > R8169_REGS_SIZE)
1046 regs->len = R8169_REGS_SIZE;
1047
1048 spin_lock_irqsave(&tp->lock, flags);
1049 memcpy_fromio(p, tp->mmio_addr, regs->len);
1050 spin_unlock_irqrestore(&tp->lock, flags);
1051 }
1052
1053 static u32 rtl8169_get_msglevel(struct net_device *dev)
1054 {
1055 struct rtl8169_private *tp = netdev_priv(dev);
1056
1057 return tp->msg_enable;
1058 }
1059
1060 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1061 {
1062 struct rtl8169_private *tp = netdev_priv(dev);
1063
1064 tp->msg_enable = value;
1065 }
1066
1067 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1068 "tx_packets",
1069 "rx_packets",
1070 "tx_errors",
1071 "rx_errors",
1072 "rx_missed",
1073 "align_errors",
1074 "tx_single_collisions",
1075 "tx_multi_collisions",
1076 "unicast",
1077 "broadcast",
1078 "multicast",
1079 "tx_aborted",
1080 "tx_underrun",
1081 };
1082
1083 struct rtl8169_counters {
1084 __le64 tx_packets;
1085 __le64 rx_packets;
1086 __le64 tx_errors;
1087 __le32 rx_errors;
1088 __le16 rx_missed;
1089 __le16 align_errors;
1090 __le32 tx_one_collision;
1091 __le32 tx_multi_collision;
1092 __le64 rx_unicast;
1093 __le64 rx_broadcast;
1094 __le32 rx_multicast;
1095 __le16 tx_aborted;
1096 __le16 tx_underun;
1097 };
1098
1099 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1100 {
1101 switch (sset) {
1102 case ETH_SS_STATS:
1103 return ARRAY_SIZE(rtl8169_gstrings);
1104 default:
1105 return -EOPNOTSUPP;
1106 }
1107 }
1108
1109 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1110 struct ethtool_stats *stats, u64 *data)
1111 {
1112 struct rtl8169_private *tp = netdev_priv(dev);
1113 void __iomem *ioaddr = tp->mmio_addr;
1114 struct rtl8169_counters *counters;
1115 dma_addr_t paddr;
1116 u32 cmd;
1117
1118 ASSERT_RTNL();
1119
1120 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1121 if (!counters)
1122 return;
1123
1124 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1125 cmd = (u64)paddr & DMA_32BIT_MASK;
1126 RTL_W32(CounterAddrLow, cmd);
1127 RTL_W32(CounterAddrLow, cmd | CounterDump);
1128
1129 while (RTL_R32(CounterAddrLow) & CounterDump) {
1130 if (msleep_interruptible(1))
1131 break;
1132 }
1133
1134 RTL_W32(CounterAddrLow, 0);
1135 RTL_W32(CounterAddrHigh, 0);
1136
1137 data[0] = le64_to_cpu(counters->tx_packets);
1138 data[1] = le64_to_cpu(counters->rx_packets);
1139 data[2] = le64_to_cpu(counters->tx_errors);
1140 data[3] = le32_to_cpu(counters->rx_errors);
1141 data[4] = le16_to_cpu(counters->rx_missed);
1142 data[5] = le16_to_cpu(counters->align_errors);
1143 data[6] = le32_to_cpu(counters->tx_one_collision);
1144 data[7] = le32_to_cpu(counters->tx_multi_collision);
1145 data[8] = le64_to_cpu(counters->rx_unicast);
1146 data[9] = le64_to_cpu(counters->rx_broadcast);
1147 data[10] = le32_to_cpu(counters->rx_multicast);
1148 data[11] = le16_to_cpu(counters->tx_aborted);
1149 data[12] = le16_to_cpu(counters->tx_underun);
1150
1151 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1152 }
1153
1154 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1155 {
1156 switch(stringset) {
1157 case ETH_SS_STATS:
1158 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1159 break;
1160 }
1161 }
1162
1163 static const struct ethtool_ops rtl8169_ethtool_ops = {
1164 .get_drvinfo = rtl8169_get_drvinfo,
1165 .get_regs_len = rtl8169_get_regs_len,
1166 .get_link = ethtool_op_get_link,
1167 .get_settings = rtl8169_get_settings,
1168 .set_settings = rtl8169_set_settings,
1169 .get_msglevel = rtl8169_get_msglevel,
1170 .set_msglevel = rtl8169_set_msglevel,
1171 .get_rx_csum = rtl8169_get_rx_csum,
1172 .set_rx_csum = rtl8169_set_rx_csum,
1173 .set_tx_csum = ethtool_op_set_tx_csum,
1174 .set_sg = ethtool_op_set_sg,
1175 .set_tso = ethtool_op_set_tso,
1176 .get_regs = rtl8169_get_regs,
1177 .get_wol = rtl8169_get_wol,
1178 .set_wol = rtl8169_set_wol,
1179 .get_strings = rtl8169_get_strings,
1180 .get_sset_count = rtl8169_get_sset_count,
1181 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1182 };
1183
1184 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1185 int bitnum, int bitval)
1186 {
1187 int val;
1188
1189 val = mdio_read(ioaddr, reg);
1190 val = (bitval == 1) ?
1191 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1192 mdio_write(ioaddr, reg, val & 0xffff);
1193 }
1194
1195 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1196 void __iomem *ioaddr)
1197 {
1198 /*
1199 * The driver currently handles the 8168Bf and the 8168Be identically
1200 * but they can be identified more specifically through the test below
1201 * if needed:
1202 *
1203 * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1204 *
1205 * Same thing for the 8101Eb and the 8101Ec:
1206 *
1207 * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1208 */
1209 const struct {
1210 u32 mask;
1211 u32 val;
1212 int mac_version;
1213 } mac_info[] = {
1214 /* 8168B family. */
1215 { 0x7c800000, 0x3c800000, RTL_GIGA_MAC_VER_18 },
1216 { 0x7cf00000, 0x3c000000, RTL_GIGA_MAC_VER_19 },
1217 { 0x7cf00000, 0x3c200000, RTL_GIGA_MAC_VER_20 },
1218 { 0x7c800000, 0x3c000000, RTL_GIGA_MAC_VER_20 },
1219
1220 /* 8168B family. */
1221 { 0x7cf00000, 0x38000000, RTL_GIGA_MAC_VER_12 },
1222 { 0x7cf00000, 0x38500000, RTL_GIGA_MAC_VER_17 },
1223 { 0x7c800000, 0x38000000, RTL_GIGA_MAC_VER_17 },
1224 { 0x7c800000, 0x30000000, RTL_GIGA_MAC_VER_11 },
1225
1226 /* 8101 family. */
1227 { 0x7cf00000, 0x34a00000, RTL_GIGA_MAC_VER_09 },
1228 { 0x7cf00000, 0x24a00000, RTL_GIGA_MAC_VER_09 },
1229 { 0x7cf00000, 0x34900000, RTL_GIGA_MAC_VER_08 },
1230 { 0x7cf00000, 0x24900000, RTL_GIGA_MAC_VER_08 },
1231 { 0x7cf00000, 0x34800000, RTL_GIGA_MAC_VER_07 },
1232 { 0x7cf00000, 0x24800000, RTL_GIGA_MAC_VER_07 },
1233 { 0x7cf00000, 0x34000000, RTL_GIGA_MAC_VER_13 },
1234 { 0x7cf00000, 0x34300000, RTL_GIGA_MAC_VER_10 },
1235 { 0x7cf00000, 0x34200000, RTL_GIGA_MAC_VER_16 },
1236 { 0x7c800000, 0x34800000, RTL_GIGA_MAC_VER_09 },
1237 { 0x7c800000, 0x24800000, RTL_GIGA_MAC_VER_09 },
1238 { 0x7c800000, 0x34000000, RTL_GIGA_MAC_VER_16 },
1239 /* FIXME: where did these entries come from ? -- FR */
1240 { 0xfc800000, 0x38800000, RTL_GIGA_MAC_VER_15 },
1241 { 0xfc800000, 0x30800000, RTL_GIGA_MAC_VER_14 },
1242
1243 /* 8110 family. */
1244 { 0xfc800000, 0x98000000, RTL_GIGA_MAC_VER_06 },
1245 { 0xfc800000, 0x18000000, RTL_GIGA_MAC_VER_05 },
1246 { 0xfc800000, 0x10000000, RTL_GIGA_MAC_VER_04 },
1247 { 0xfc800000, 0x04000000, RTL_GIGA_MAC_VER_03 },
1248 { 0xfc800000, 0x00800000, RTL_GIGA_MAC_VER_02 },
1249 { 0xfc800000, 0x00000000, RTL_GIGA_MAC_VER_01 },
1250
1251 { 0x00000000, 0x00000000, RTL_GIGA_MAC_VER_01 } /* Catch-all */
1252 }, *p = mac_info;
1253 u32 reg;
1254
1255 reg = RTL_R32(TxConfig);
1256 while ((reg & p->mask) != p->val)
1257 p++;
1258 tp->mac_version = p->mac_version;
1259
1260 if (p->mask == 0x00000000) {
1261 struct pci_dev *pdev = tp->pci_dev;
1262
1263 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1264 }
1265 }
1266
1267 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1268 {
1269 dprintk("mac_version = 0x%02x\n", tp->mac_version);
1270 }
1271
1272 struct phy_reg {
1273 u16 reg;
1274 u16 val;
1275 };
1276
1277 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1278 {
1279 while (len-- > 0) {
1280 mdio_write(ioaddr, regs->reg, regs->val);
1281 regs++;
1282 }
1283 }
1284
1285 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1286 {
1287 struct {
1288 u16 regs[5]; /* Beware of bit-sign propagation */
1289 } phy_magic[5] = { {
1290 { 0x0000, //w 4 15 12 0
1291 0x00a1, //w 3 15 0 00a1
1292 0x0008, //w 2 15 0 0008
1293 0x1020, //w 1 15 0 1020
1294 0x1000 } },{ //w 0 15 0 1000
1295 { 0x7000, //w 4 15 12 7
1296 0xff41, //w 3 15 0 ff41
1297 0xde60, //w 2 15 0 de60
1298 0x0140, //w 1 15 0 0140
1299 0x0077 } },{ //w 0 15 0 0077
1300 { 0xa000, //w 4 15 12 a
1301 0xdf01, //w 3 15 0 df01
1302 0xdf20, //w 2 15 0 df20
1303 0xff95, //w 1 15 0 ff95
1304 0xfa00 } },{ //w 0 15 0 fa00
1305 { 0xb000, //w 4 15 12 b
1306 0xff41, //w 3 15 0 ff41
1307 0xde20, //w 2 15 0 de20
1308 0x0140, //w 1 15 0 0140
1309 0x00bb } },{ //w 0 15 0 00bb
1310 { 0xf000, //w 4 15 12 f
1311 0xdf01, //w 3 15 0 df01
1312 0xdf20, //w 2 15 0 df20
1313 0xff95, //w 1 15 0 ff95
1314 0xbf00 } //w 0 15 0 bf00
1315 }
1316 }, *p = phy_magic;
1317 unsigned int i;
1318
1319 mdio_write(ioaddr, 0x1f, 0x0001); //w 31 2 0 1
1320 mdio_write(ioaddr, 0x15, 0x1000); //w 21 15 0 1000
1321 mdio_write(ioaddr, 0x18, 0x65c7); //w 24 15 0 65c7
1322 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1323
1324 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1325 int val, pos = 4;
1326
1327 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1328 mdio_write(ioaddr, pos, val);
1329 while (--pos >= 0)
1330 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1331 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1332 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1333 }
1334 mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1335 }
1336
1337 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1338 {
1339 struct phy_reg phy_reg_init[] = {
1340 { 0x1f, 0x0002 },
1341 { 0x01, 0x90d0 },
1342 { 0x1f, 0x0000 }
1343 };
1344
1345 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1346 }
1347
1348 static void rtl8168cp_hw_phy_config(void __iomem *ioaddr)
1349 {
1350 struct phy_reg phy_reg_init[] = {
1351 { 0x1f, 0x0000 },
1352 { 0x1d, 0x0f00 },
1353 { 0x1f, 0x0002 },
1354 { 0x0c, 0x1ec8 },
1355 { 0x1f, 0x0000 }
1356 };
1357
1358 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1359 }
1360
1361 static void rtl8168c_hw_phy_config(void __iomem *ioaddr)
1362 {
1363 struct phy_reg phy_reg_init[] = {
1364 { 0x1f, 0x0001 },
1365 { 0x12, 0x2300 },
1366 { 0x1f, 0x0002 },
1367 { 0x00, 0x88d4 },
1368 { 0x01, 0x82b1 },
1369 { 0x03, 0x7002 },
1370 { 0x08, 0x9e30 },
1371 { 0x09, 0x01f0 },
1372 { 0x0a, 0x5500 },
1373 { 0x0c, 0x00c8 },
1374 { 0x1f, 0x0003 },
1375 { 0x12, 0xc096 },
1376 { 0x16, 0x000a },
1377 { 0x1f, 0x0000 }
1378 };
1379
1380 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1381 }
1382
1383 static void rtl8168cx_hw_phy_config(void __iomem *ioaddr)
1384 {
1385 struct phy_reg phy_reg_init[] = {
1386 { 0x1f, 0x0000 },
1387 { 0x12, 0x2300 },
1388 { 0x1f, 0x0003 },
1389 { 0x16, 0x0f0a },
1390 { 0x1f, 0x0000 },
1391 { 0x1f, 0x0002 },
1392 { 0x0c, 0x7eb8 },
1393 { 0x1f, 0x0000 }
1394 };
1395
1396 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1397 }
1398
1399 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1400 {
1401 struct phy_reg phy_reg_init[] = {
1402 { 0x1f, 0x0003 },
1403 { 0x08, 0x441d },
1404 { 0x01, 0x9100 },
1405 { 0x1f, 0x0000 }
1406 };
1407
1408 mdio_write(ioaddr, 0x1f, 0x0000);
1409 mdio_patch(ioaddr, 0x11, 1 << 12);
1410 mdio_patch(ioaddr, 0x19, 1 << 13);
1411
1412 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1413 }
1414
1415 static void rtl_hw_phy_config(struct net_device *dev)
1416 {
1417 struct rtl8169_private *tp = netdev_priv(dev);
1418 void __iomem *ioaddr = tp->mmio_addr;
1419
1420 rtl8169_print_mac_version(tp);
1421
1422 switch (tp->mac_version) {
1423 case RTL_GIGA_MAC_VER_01:
1424 break;
1425 case RTL_GIGA_MAC_VER_02:
1426 case RTL_GIGA_MAC_VER_03:
1427 rtl8169s_hw_phy_config(ioaddr);
1428 break;
1429 case RTL_GIGA_MAC_VER_04:
1430 rtl8169sb_hw_phy_config(ioaddr);
1431 break;
1432 case RTL_GIGA_MAC_VER_07:
1433 case RTL_GIGA_MAC_VER_08:
1434 case RTL_GIGA_MAC_VER_09:
1435 rtl8102e_hw_phy_config(ioaddr);
1436 break;
1437 case RTL_GIGA_MAC_VER_18:
1438 rtl8168cp_hw_phy_config(ioaddr);
1439 break;
1440 case RTL_GIGA_MAC_VER_19:
1441 rtl8168c_hw_phy_config(ioaddr);
1442 break;
1443 case RTL_GIGA_MAC_VER_20:
1444 rtl8168cx_hw_phy_config(ioaddr);
1445 break;
1446 default:
1447 break;
1448 }
1449 }
1450
1451 static void rtl8169_phy_timer(unsigned long __opaque)
1452 {
1453 struct net_device *dev = (struct net_device *)__opaque;
1454 struct rtl8169_private *tp = netdev_priv(dev);
1455 struct timer_list *timer = &tp->timer;
1456 void __iomem *ioaddr = tp->mmio_addr;
1457 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1458
1459 assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1460
1461 if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1462 return;
1463
1464 spin_lock_irq(&tp->lock);
1465
1466 if (tp->phy_reset_pending(ioaddr)) {
1467 /*
1468 * A busy loop could burn quite a few cycles on nowadays CPU.
1469 * Let's delay the execution of the timer for a few ticks.
1470 */
1471 timeout = HZ/10;
1472 goto out_mod_timer;
1473 }
1474
1475 if (tp->link_ok(ioaddr))
1476 goto out_unlock;
1477
1478 if (netif_msg_link(tp))
1479 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1480
1481 tp->phy_reset_enable(ioaddr);
1482
1483 out_mod_timer:
1484 mod_timer(timer, jiffies + timeout);
1485 out_unlock:
1486 spin_unlock_irq(&tp->lock);
1487 }
1488
1489 static inline void rtl8169_delete_timer(struct net_device *dev)
1490 {
1491 struct rtl8169_private *tp = netdev_priv(dev);
1492 struct timer_list *timer = &tp->timer;
1493
1494 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1495 return;
1496
1497 del_timer_sync(timer);
1498 }
1499
1500 static inline void rtl8169_request_timer(struct net_device *dev)
1501 {
1502 struct rtl8169_private *tp = netdev_priv(dev);
1503 struct timer_list *timer = &tp->timer;
1504
1505 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1506 return;
1507
1508 mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1509 }
1510
1511 #ifdef CONFIG_NET_POLL_CONTROLLER
1512 /*
1513 * Polling 'interrupt' - used by things like netconsole to send skbs
1514 * without having to re-enable interrupts. It's not called while
1515 * the interrupt routine is executing.
1516 */
1517 static void rtl8169_netpoll(struct net_device *dev)
1518 {
1519 struct rtl8169_private *tp = netdev_priv(dev);
1520 struct pci_dev *pdev = tp->pci_dev;
1521
1522 disable_irq(pdev->irq);
1523 rtl8169_interrupt(pdev->irq, dev);
1524 enable_irq(pdev->irq);
1525 }
1526 #endif
1527
1528 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1529 void __iomem *ioaddr)
1530 {
1531 iounmap(ioaddr);
1532 pci_release_regions(pdev);
1533 pci_disable_device(pdev);
1534 free_netdev(dev);
1535 }
1536
1537 static void rtl8169_phy_reset(struct net_device *dev,
1538 struct rtl8169_private *tp)
1539 {
1540 void __iomem *ioaddr = tp->mmio_addr;
1541 unsigned int i;
1542
1543 tp->phy_reset_enable(ioaddr);
1544 for (i = 0; i < 100; i++) {
1545 if (!tp->phy_reset_pending(ioaddr))
1546 return;
1547 msleep(1);
1548 }
1549 if (netif_msg_link(tp))
1550 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1551 }
1552
1553 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1554 {
1555 void __iomem *ioaddr = tp->mmio_addr;
1556
1557 rtl_hw_phy_config(dev);
1558
1559 if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1560 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1561 RTL_W8(0x82, 0x01);
1562 }
1563
1564 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1565
1566 if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1567 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1568
1569 if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1570 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1571 RTL_W8(0x82, 0x01);
1572 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1573 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1574 }
1575
1576 rtl8169_phy_reset(dev, tp);
1577
1578 /*
1579 * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1580 * only 8101. Don't panic.
1581 */
1582 rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1583
1584 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1585 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1586 }
1587
1588 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1589 {
1590 void __iomem *ioaddr = tp->mmio_addr;
1591 u32 high;
1592 u32 low;
1593
1594 low = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1595 high = addr[4] | (addr[5] << 8);
1596
1597 spin_lock_irq(&tp->lock);
1598
1599 RTL_W8(Cfg9346, Cfg9346_Unlock);
1600 RTL_W32(MAC0, low);
1601 RTL_W32(MAC4, high);
1602 RTL_W8(Cfg9346, Cfg9346_Lock);
1603
1604 spin_unlock_irq(&tp->lock);
1605 }
1606
1607 static int rtl_set_mac_address(struct net_device *dev, void *p)
1608 {
1609 struct rtl8169_private *tp = netdev_priv(dev);
1610 struct sockaddr *addr = p;
1611
1612 if (!is_valid_ether_addr(addr->sa_data))
1613 return -EADDRNOTAVAIL;
1614
1615 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1616
1617 rtl_rar_set(tp, dev->dev_addr);
1618
1619 return 0;
1620 }
1621
1622 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1623 {
1624 struct rtl8169_private *tp = netdev_priv(dev);
1625 struct mii_ioctl_data *data = if_mii(ifr);
1626
1627 if (!netif_running(dev))
1628 return -ENODEV;
1629
1630 switch (cmd) {
1631 case SIOCGMIIPHY:
1632 data->phy_id = 32; /* Internal PHY */
1633 return 0;
1634
1635 case SIOCGMIIREG:
1636 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1637 return 0;
1638
1639 case SIOCSMIIREG:
1640 if (!capable(CAP_NET_ADMIN))
1641 return -EPERM;
1642 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1643 return 0;
1644 }
1645 return -EOPNOTSUPP;
1646 }
1647
1648 static const struct rtl_cfg_info {
1649 void (*hw_start)(struct net_device *);
1650 unsigned int region;
1651 unsigned int align;
1652 u16 intr_event;
1653 u16 napi_event;
1654 unsigned features;
1655 } rtl_cfg_infos [] = {
1656 [RTL_CFG_0] = {
1657 .hw_start = rtl_hw_start_8169,
1658 .region = 1,
1659 .align = 0,
1660 .intr_event = SYSErr | LinkChg | RxOverflow |
1661 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1662 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1663 .features = RTL_FEATURE_GMII
1664 },
1665 [RTL_CFG_1] = {
1666 .hw_start = rtl_hw_start_8168,
1667 .region = 2,
1668 .align = 8,
1669 .intr_event = SYSErr | LinkChg | RxOverflow |
1670 TxErr | TxOK | RxOK | RxErr,
1671 .napi_event = TxErr | TxOK | RxOK | RxOverflow,
1672 .features = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1673 },
1674 [RTL_CFG_2] = {
1675 .hw_start = rtl_hw_start_8101,
1676 .region = 2,
1677 .align = 8,
1678 .intr_event = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1679 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1680 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1681 .features = RTL_FEATURE_MSI
1682 }
1683 };
1684
1685 /* Cfg9346_Unlock assumed. */
1686 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1687 const struct rtl_cfg_info *cfg)
1688 {
1689 unsigned msi = 0;
1690 u8 cfg2;
1691
1692 cfg2 = RTL_R8(Config2) & ~MSIEnable;
1693 if (cfg->features & RTL_FEATURE_MSI) {
1694 if (pci_enable_msi(pdev)) {
1695 dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1696 } else {
1697 cfg2 |= MSIEnable;
1698 msi = RTL_FEATURE_MSI;
1699 }
1700 }
1701 RTL_W8(Config2, cfg2);
1702 return msi;
1703 }
1704
1705 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1706 {
1707 if (tp->features & RTL_FEATURE_MSI) {
1708 pci_disable_msi(pdev);
1709 tp->features &= ~RTL_FEATURE_MSI;
1710 }
1711 }
1712
1713 static int rtl_eeprom_read(struct pci_dev *pdev, int cap, int addr, __le32 *val)
1714 {
1715 int ret, count = 100;
1716 u16 status = 0;
1717 u32 value;
1718
1719 ret = pci_write_config_word(pdev, cap + PCI_VPD_ADDR, addr);
1720 if (ret < 0)
1721 return ret;
1722
1723 do {
1724 udelay(10);
1725 ret = pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &status);
1726 if (ret < 0)
1727 return ret;
1728 } while (!(status & PCI_VPD_ADDR_F) && --count);
1729
1730 if (!(status & PCI_VPD_ADDR_F))
1731 return -ETIMEDOUT;
1732
1733 ret = pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &value);
1734 if (ret < 0)
1735 return ret;
1736
1737 *val = cpu_to_le32(value);
1738
1739 return 0;
1740 }
1741
1742 static void rtl_init_mac_address(struct rtl8169_private *tp,
1743 void __iomem *ioaddr)
1744 {
1745 struct pci_dev *pdev = tp->pci_dev;
1746 u8 cfg1;
1747 int vpd_cap;
1748 u8 mac[8];
1749 DECLARE_MAC_BUF(buf);
1750
1751 cfg1 = RTL_R8(Config1);
1752 if (!(cfg1 & VPD)) {
1753 dprintk("VPD access not enabled, enabling\n");
1754 RTL_W8(Cfg9346, Cfg9346_Unlock);
1755 RTL_W8(Config1, cfg1 | VPD);
1756 RTL_W8(Cfg9346, Cfg9346_Lock);
1757 }
1758
1759 vpd_cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
1760 if (!vpd_cap)
1761 return;
1762
1763 /* MAC address is stored in EEPROM at offset 0x0e
1764 * Realtek says: "The VPD address does not have to be a DWORD-aligned
1765 * address as defined in the PCI 2.2 Specifications, but the VPD data
1766 * is always consecutive 4-byte data starting from the VPD address
1767 * specified."
1768 */
1769 if (rtl_eeprom_read(pdev, vpd_cap, 0x000e, (__le32*)&mac[0]) < 0 ||
1770 rtl_eeprom_read(pdev, vpd_cap, 0x0012, (__le32*)&mac[4]) < 0) {
1771 dprintk("Reading MAC address from EEPROM failed\n");
1772 return;
1773 }
1774
1775 dprintk("MAC address found in EEPROM: %s\n", print_mac(buf, mac));
1776
1777 /* Write MAC address */
1778 rtl_rar_set(tp, mac);
1779 }
1780
1781 static int __devinit
1782 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1783 {
1784 const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1785 const unsigned int region = cfg->region;
1786 struct rtl8169_private *tp;
1787 struct mii_if_info *mii;
1788 struct net_device *dev;
1789 void __iomem *ioaddr;
1790 unsigned int i;
1791 int rc;
1792
1793 if (netif_msg_drv(&debug)) {
1794 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1795 MODULENAME, RTL8169_VERSION);
1796 }
1797
1798 dev = alloc_etherdev(sizeof (*tp));
1799 if (!dev) {
1800 if (netif_msg_drv(&debug))
1801 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1802 rc = -ENOMEM;
1803 goto out;
1804 }
1805
1806 SET_NETDEV_DEV(dev, &pdev->dev);
1807 tp = netdev_priv(dev);
1808 tp->dev = dev;
1809 tp->pci_dev = pdev;
1810 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1811
1812 mii = &tp->mii;
1813 mii->dev = dev;
1814 mii->mdio_read = rtl_mdio_read;
1815 mii->mdio_write = rtl_mdio_write;
1816 mii->phy_id_mask = 0x1f;
1817 mii->reg_num_mask = 0x1f;
1818 mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
1819
1820 /* enable device (incl. PCI PM wakeup and hotplug setup) */
1821 rc = pci_enable_device(pdev);
1822 if (rc < 0) {
1823 if (netif_msg_probe(tp))
1824 dev_err(&pdev->dev, "enable failure\n");
1825 goto err_out_free_dev_1;
1826 }
1827
1828 rc = pci_set_mwi(pdev);
1829 if (rc < 0)
1830 goto err_out_disable_2;
1831
1832 /* make sure PCI base addr 1 is MMIO */
1833 if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1834 if (netif_msg_probe(tp)) {
1835 dev_err(&pdev->dev,
1836 "region #%d not an MMIO resource, aborting\n",
1837 region);
1838 }
1839 rc = -ENODEV;
1840 goto err_out_mwi_3;
1841 }
1842
1843 /* check for weird/broken PCI region reporting */
1844 if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1845 if (netif_msg_probe(tp)) {
1846 dev_err(&pdev->dev,
1847 "Invalid PCI region size(s), aborting\n");
1848 }
1849 rc = -ENODEV;
1850 goto err_out_mwi_3;
1851 }
1852
1853 rc = pci_request_regions(pdev, MODULENAME);
1854 if (rc < 0) {
1855 if (netif_msg_probe(tp))
1856 dev_err(&pdev->dev, "could not request regions.\n");
1857 goto err_out_mwi_3;
1858 }
1859
1860 tp->cp_cmd = PCIMulRW | RxChkSum;
1861
1862 if ((sizeof(dma_addr_t) > 4) &&
1863 !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1864 tp->cp_cmd |= PCIDAC;
1865 dev->features |= NETIF_F_HIGHDMA;
1866 } else {
1867 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1868 if (rc < 0) {
1869 if (netif_msg_probe(tp)) {
1870 dev_err(&pdev->dev,
1871 "DMA configuration failed.\n");
1872 }
1873 goto err_out_free_res_4;
1874 }
1875 }
1876
1877 pci_set_master(pdev);
1878
1879 /* ioremap MMIO region */
1880 ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1881 if (!ioaddr) {
1882 if (netif_msg_probe(tp))
1883 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1884 rc = -EIO;
1885 goto err_out_free_res_4;
1886 }
1887
1888 tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
1889 if (!tp->pcie_cap && netif_msg_probe(tp))
1890 dev_info(&pdev->dev, "no PCI Express capability\n");
1891
1892 /* Unneeded ? Don't mess with Mrs. Murphy. */
1893 rtl8169_irq_mask_and_ack(ioaddr);
1894
1895 /* Soft reset the chip. */
1896 RTL_W8(ChipCmd, CmdReset);
1897
1898 /* Check that the chip has finished the reset. */
1899 for (i = 0; i < 100; i++) {
1900 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1901 break;
1902 msleep_interruptible(1);
1903 }
1904
1905 /* Identify chip attached to board */
1906 rtl8169_get_mac_version(tp, ioaddr);
1907
1908 rtl8169_print_mac_version(tp);
1909
1910 for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
1911 if (tp->mac_version == rtl_chip_info[i].mac_version)
1912 break;
1913 }
1914 if (i == ARRAY_SIZE(rtl_chip_info)) {
1915 /* Unknown chip: assume array element #0, original RTL-8169 */
1916 if (netif_msg_probe(tp)) {
1917 dev_printk(KERN_DEBUG, &pdev->dev,
1918 "unknown chip version, assuming %s\n",
1919 rtl_chip_info[0].name);
1920 }
1921 i = 0;
1922 }
1923 tp->chipset = i;
1924
1925 RTL_W8(Cfg9346, Cfg9346_Unlock);
1926 RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1927 RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1928 if ((RTL_R8(Config3) & (LinkUp | MagicPacket)) != 0)
1929 tp->features |= RTL_FEATURE_WOL;
1930 if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0)
1931 tp->features |= RTL_FEATURE_WOL;
1932 tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
1933 RTL_W8(Cfg9346, Cfg9346_Lock);
1934
1935 if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
1936 (RTL_R8(PHYstatus) & TBI_Enable)) {
1937 tp->set_speed = rtl8169_set_speed_tbi;
1938 tp->get_settings = rtl8169_gset_tbi;
1939 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1940 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1941 tp->link_ok = rtl8169_tbi_link_ok;
1942
1943 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1944 } else {
1945 tp->set_speed = rtl8169_set_speed_xmii;
1946 tp->get_settings = rtl8169_gset_xmii;
1947 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1948 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1949 tp->link_ok = rtl8169_xmii_link_ok;
1950
1951 dev->do_ioctl = rtl8169_ioctl;
1952 }
1953
1954 /* Read MAC address from EEPROM */
1955 rtl_init_mac_address(tp, ioaddr);
1956
1957 /* Get MAC address */
1958 for (i = 0; i < MAC_ADDR_LEN; i++)
1959 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1960 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1961
1962 dev->open = rtl8169_open;
1963 dev->hard_start_xmit = rtl8169_start_xmit;
1964 dev->get_stats = rtl8169_get_stats;
1965 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1966 dev->stop = rtl8169_close;
1967 dev->tx_timeout = rtl8169_tx_timeout;
1968 dev->set_multicast_list = rtl_set_rx_mode;
1969 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1970 dev->irq = pdev->irq;
1971 dev->base_addr = (unsigned long) ioaddr;
1972 dev->change_mtu = rtl8169_change_mtu;
1973 dev->set_mac_address = rtl_set_mac_address;
1974
1975 netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
1976
1977 #ifdef CONFIG_R8169_VLAN
1978 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1979 dev->vlan_rx_register = rtl8169_vlan_rx_register;
1980 #endif
1981
1982 #ifdef CONFIG_NET_POLL_CONTROLLER
1983 dev->poll_controller = rtl8169_netpoll;
1984 #endif
1985
1986 tp->intr_mask = 0xffff;
1987 tp->mmio_addr = ioaddr;
1988 tp->align = cfg->align;
1989 tp->hw_start = cfg->hw_start;
1990 tp->intr_event = cfg->intr_event;
1991 tp->napi_event = cfg->napi_event;
1992
1993 init_timer(&tp->timer);
1994 tp->timer.data = (unsigned long) dev;
1995 tp->timer.function = rtl8169_phy_timer;
1996
1997 spin_lock_init(&tp->lock);
1998
1999 rc = register_netdev(dev);
2000 if (rc < 0)
2001 goto err_out_msi_5;
2002
2003 pci_set_drvdata(pdev, dev);
2004
2005 if (netif_msg_probe(tp)) {
2006 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
2007
2008 printk(KERN_INFO "%s: %s at 0x%lx, "
2009 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
2010 "XID %08x IRQ %d\n",
2011 dev->name,
2012 rtl_chip_info[tp->chipset].name,
2013 dev->base_addr,
2014 dev->dev_addr[0], dev->dev_addr[1],
2015 dev->dev_addr[2], dev->dev_addr[3],
2016 dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
2017 }
2018
2019 rtl8169_init_phy(dev, tp);
2020
2021 out:
2022 return rc;
2023
2024 err_out_msi_5:
2025 rtl_disable_msi(pdev, tp);
2026 iounmap(ioaddr);
2027 err_out_free_res_4:
2028 pci_release_regions(pdev);
2029 err_out_mwi_3:
2030 pci_clear_mwi(pdev);
2031 err_out_disable_2:
2032 pci_disable_device(pdev);
2033 err_out_free_dev_1:
2034 free_netdev(dev);
2035 goto out;
2036 }
2037
2038 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
2039 {
2040 struct net_device *dev = pci_get_drvdata(pdev);
2041 struct rtl8169_private *tp = netdev_priv(dev);
2042
2043 flush_scheduled_work();
2044
2045 unregister_netdev(dev);
2046 rtl_disable_msi(pdev, tp);
2047 rtl8169_release_board(pdev, dev, tp->mmio_addr);
2048 pci_set_drvdata(pdev, NULL);
2049 }
2050
2051 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
2052 struct net_device *dev)
2053 {
2054 unsigned int mtu = dev->mtu;
2055
2056 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
2057 }
2058
2059 static int rtl8169_open(struct net_device *dev)
2060 {
2061 struct rtl8169_private *tp = netdev_priv(dev);
2062 struct pci_dev *pdev = tp->pci_dev;
2063 int retval = -ENOMEM;
2064
2065
2066 rtl8169_set_rxbufsize(tp, dev);
2067
2068 /*
2069 * Rx and Tx desscriptors needs 256 bytes alignment.
2070 * pci_alloc_consistent provides more.
2071 */
2072 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
2073 &tp->TxPhyAddr);
2074 if (!tp->TxDescArray)
2075 goto out;
2076
2077 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2078 &tp->RxPhyAddr);
2079 if (!tp->RxDescArray)
2080 goto err_free_tx_0;
2081
2082 retval = rtl8169_init_ring(dev);
2083 if (retval < 0)
2084 goto err_free_rx_1;
2085
2086 INIT_DELAYED_WORK(&tp->task, NULL);
2087
2088 smp_mb();
2089
2090 retval = request_irq(dev->irq, rtl8169_interrupt,
2091 (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2092 dev->name, dev);
2093 if (retval < 0)
2094 goto err_release_ring_2;
2095
2096 napi_enable(&tp->napi);
2097
2098 rtl_hw_start(dev);
2099
2100 rtl8169_request_timer(dev);
2101
2102 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2103 out:
2104 return retval;
2105
2106 err_release_ring_2:
2107 rtl8169_rx_clear(tp);
2108 err_free_rx_1:
2109 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2110 tp->RxPhyAddr);
2111 err_free_tx_0:
2112 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2113 tp->TxPhyAddr);
2114 goto out;
2115 }
2116
2117 static void rtl8169_hw_reset(void __iomem *ioaddr)
2118 {
2119 /* Disable interrupts */
2120 rtl8169_irq_mask_and_ack(ioaddr);
2121
2122 /* Reset the chipset */
2123 RTL_W8(ChipCmd, CmdReset);
2124
2125 /* PCI commit */
2126 RTL_R8(ChipCmd);
2127 }
2128
2129 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2130 {
2131 void __iomem *ioaddr = tp->mmio_addr;
2132 u32 cfg = rtl8169_rx_config;
2133
2134 cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2135 RTL_W32(RxConfig, cfg);
2136
2137 /* Set DMA burst size and Interframe Gap Time */
2138 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2139 (InterFrameGap << TxInterFrameGapShift));
2140 }
2141
2142 static void rtl_hw_start(struct net_device *dev)
2143 {
2144 struct rtl8169_private *tp = netdev_priv(dev);
2145 void __iomem *ioaddr = tp->mmio_addr;
2146 unsigned int i;
2147
2148 /* Soft reset the chip. */
2149 RTL_W8(ChipCmd, CmdReset);
2150
2151 /* Check that the chip has finished the reset. */
2152 for (i = 0; i < 100; i++) {
2153 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2154 break;
2155 msleep_interruptible(1);
2156 }
2157
2158 tp->hw_start(dev);
2159
2160 netif_start_queue(dev);
2161 }
2162
2163
2164 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2165 void __iomem *ioaddr)
2166 {
2167 /*
2168 * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2169 * register to be written before TxDescAddrLow to work.
2170 * Switching from MMIO to I/O access fixes the issue as well.
2171 */
2172 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2173 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
2174 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2175 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
2176 }
2177
2178 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2179 {
2180 u16 cmd;
2181
2182 cmd = RTL_R16(CPlusCmd);
2183 RTL_W16(CPlusCmd, cmd);
2184 return cmd;
2185 }
2186
2187 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2188 {
2189 /* Low hurts. Let's disable the filtering. */
2190 RTL_W16(RxMaxSize, 16383);
2191 }
2192
2193 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2194 {
2195 struct {
2196 u32 mac_version;
2197 u32 clk;
2198 u32 val;
2199 } cfg2_info [] = {
2200 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2201 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2202 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2203 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2204 }, *p = cfg2_info;
2205 unsigned int i;
2206 u32 clk;
2207
2208 clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2209 for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2210 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2211 RTL_W32(0x7c, p->val);
2212 break;
2213 }
2214 }
2215 }
2216
2217 static void rtl_hw_start_8169(struct net_device *dev)
2218 {
2219 struct rtl8169_private *tp = netdev_priv(dev);
2220 void __iomem *ioaddr = tp->mmio_addr;
2221 struct pci_dev *pdev = tp->pci_dev;
2222
2223 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2224 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2225 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2226 }
2227
2228 RTL_W8(Cfg9346, Cfg9346_Unlock);
2229 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2230 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2231 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2232 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2233 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2234
2235 RTL_W8(EarlyTxThres, EarlyTxThld);
2236
2237 rtl_set_rx_max_size(ioaddr);
2238
2239 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2240 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2241 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2242 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2243 rtl_set_rx_tx_config_registers(tp);
2244
2245 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2246
2247 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2248 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2249 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2250 "Bit-3 and bit-14 MUST be 1\n");
2251 tp->cp_cmd |= (1 << 14);
2252 }
2253
2254 RTL_W16(CPlusCmd, tp->cp_cmd);
2255
2256 rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2257
2258 /*
2259 * Undocumented corner. Supposedly:
2260 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2261 */
2262 RTL_W16(IntrMitigate, 0x0000);
2263
2264 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2265
2266 if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2267 (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2268 (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2269 (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2270 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2271 rtl_set_rx_tx_config_registers(tp);
2272 }
2273
2274 RTL_W8(Cfg9346, Cfg9346_Lock);
2275
2276 /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2277 RTL_R8(IntrMask);
2278
2279 RTL_W32(RxMissed, 0);
2280
2281 rtl_set_rx_mode(dev);
2282
2283 /* no early-rx interrupts */
2284 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2285
2286 /* Enable all known interrupts by setting the interrupt mask. */
2287 RTL_W16(IntrMask, tp->intr_event);
2288 }
2289
2290 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2291 {
2292 struct net_device *dev = pci_get_drvdata(pdev);
2293 struct rtl8169_private *tp = netdev_priv(dev);
2294 int cap = tp->pcie_cap;
2295
2296 if (cap) {
2297 u16 ctl;
2298
2299 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2300 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2301 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2302 }
2303 }
2304
2305 static void rtl_csi_access_enable(void __iomem *ioaddr)
2306 {
2307 u32 csi;
2308
2309 csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2310 rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2311 }
2312
2313 struct ephy_info {
2314 unsigned int offset;
2315 u16 mask;
2316 u16 bits;
2317 };
2318
2319 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2320 {
2321 u16 w;
2322
2323 while (len-- > 0) {
2324 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2325 rtl_ephy_write(ioaddr, e->offset, w);
2326 e++;
2327 }
2328 }
2329
2330 static void rtl_hw_start_8168(struct net_device *dev)
2331 {
2332 struct rtl8169_private *tp = netdev_priv(dev);
2333 void __iomem *ioaddr = tp->mmio_addr;
2334 struct pci_dev *pdev = tp->pci_dev;
2335
2336 RTL_W8(Cfg9346, Cfg9346_Unlock);
2337
2338 RTL_W8(EarlyTxThres, EarlyTxThld);
2339
2340 rtl_set_rx_max_size(ioaddr);
2341
2342 rtl_set_rx_tx_config_registers(tp);
2343
2344 tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2345
2346 RTL_W16(CPlusCmd, tp->cp_cmd);
2347
2348 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2349
2350 RTL_W16(IntrMitigate, 0x5151);
2351
2352 /* Work around for RxFIFO overflow. */
2353 if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2354 tp->intr_event |= RxFIFOOver | PCSTimeout;
2355 tp->intr_event &= ~RxOverflow;
2356 }
2357
2358 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2359
2360 RTL_W8(Cfg9346, Cfg9346_Lock);
2361
2362 RTL_R8(IntrMask);
2363
2364 rtl_set_rx_mode(dev);
2365
2366 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2367
2368 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2369
2370 RTL_W16(IntrMask, tp->intr_event);
2371 }
2372
2373 #define R810X_CPCMD_QUIRK_MASK (\
2374 EnableBist | \
2375 Mac_dbgo_oe | \
2376 Force_half_dup | \
2377 Force_half_dup | \
2378 Force_txflow_en | \
2379 Cxpl_dbg_sel | \
2380 ASF | \
2381 PktCntrDisable | \
2382 PCIDAC | \
2383 PCIMulRW)
2384
2385 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2386 {
2387 static struct ephy_info e_info_8102e_1[] = {
2388 { 0x01, 0, 0x6e65 },
2389 { 0x02, 0, 0x091f },
2390 { 0x03, 0, 0xc2f9 },
2391 { 0x06, 0, 0xafb5 },
2392 { 0x07, 0, 0x0e00 },
2393 { 0x19, 0, 0xec80 },
2394 { 0x01, 0, 0x2e65 },
2395 { 0x01, 0, 0x6e65 }
2396 };
2397 u8 cfg1;
2398
2399 rtl_csi_access_enable(ioaddr);
2400
2401 RTL_W8(DBG_REG, FIX_NAK_1);
2402
2403 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2404
2405 RTL_W8(Config1,
2406 LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2407 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2408
2409 cfg1 = RTL_R8(Config1);
2410 if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2411 RTL_W8(Config1, cfg1 & ~LEDS0);
2412
2413 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2414
2415 rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2416 }
2417
2418 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2419 {
2420 rtl_csi_access_enable(ioaddr);
2421
2422 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2423
2424 RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2425 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2426
2427 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2428 }
2429
2430 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2431 {
2432 rtl_hw_start_8102e_2(ioaddr, pdev);
2433
2434 rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2435 }
2436
2437 static void rtl_hw_start_8101(struct net_device *dev)
2438 {
2439 struct rtl8169_private *tp = netdev_priv(dev);
2440 void __iomem *ioaddr = tp->mmio_addr;
2441 struct pci_dev *pdev = tp->pci_dev;
2442
2443 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2444 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2445 int cap = tp->pcie_cap;
2446
2447 if (cap) {
2448 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2449 PCI_EXP_DEVCTL_NOSNOOP_EN);
2450 }
2451 }
2452
2453 switch (tp->mac_version) {
2454 case RTL_GIGA_MAC_VER_07:
2455 rtl_hw_start_8102e_1(ioaddr, pdev);
2456 break;
2457
2458 case RTL_GIGA_MAC_VER_08:
2459 rtl_hw_start_8102e_3(ioaddr, pdev);
2460 break;
2461
2462 case RTL_GIGA_MAC_VER_09:
2463 rtl_hw_start_8102e_2(ioaddr, pdev);
2464 break;
2465 }
2466
2467 RTL_W8(Cfg9346, Cfg9346_Unlock);
2468
2469 RTL_W8(EarlyTxThres, EarlyTxThld);
2470
2471 rtl_set_rx_max_size(ioaddr);
2472
2473 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2474
2475 RTL_W16(CPlusCmd, tp->cp_cmd);
2476
2477 RTL_W16(IntrMitigate, 0x0000);
2478
2479 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2480
2481 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2482 rtl_set_rx_tx_config_registers(tp);
2483
2484 RTL_W8(Cfg9346, Cfg9346_Lock);
2485
2486 RTL_R8(IntrMask);
2487
2488 rtl_set_rx_mode(dev);
2489
2490 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2491
2492 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2493
2494 RTL_W16(IntrMask, tp->intr_event);
2495 }
2496
2497 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2498 {
2499 struct rtl8169_private *tp = netdev_priv(dev);
2500 int ret = 0;
2501
2502 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2503 return -EINVAL;
2504
2505 dev->mtu = new_mtu;
2506
2507 if (!netif_running(dev))
2508 goto out;
2509
2510 rtl8169_down(dev);
2511
2512 rtl8169_set_rxbufsize(tp, dev);
2513
2514 ret = rtl8169_init_ring(dev);
2515 if (ret < 0)
2516 goto out;
2517
2518 napi_enable(&tp->napi);
2519
2520 rtl_hw_start(dev);
2521
2522 rtl8169_request_timer(dev);
2523
2524 out:
2525 return ret;
2526 }
2527
2528 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2529 {
2530 desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2531 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2532 }
2533
2534 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2535 struct sk_buff **sk_buff, struct RxDesc *desc)
2536 {
2537 struct pci_dev *pdev = tp->pci_dev;
2538
2539 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2540 PCI_DMA_FROMDEVICE);
2541 dev_kfree_skb(*sk_buff);
2542 *sk_buff = NULL;
2543 rtl8169_make_unusable_by_asic(desc);
2544 }
2545
2546 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2547 {
2548 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2549
2550 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2551 }
2552
2553 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2554 u32 rx_buf_sz)
2555 {
2556 desc->addr = cpu_to_le64(mapping);
2557 wmb();
2558 rtl8169_mark_to_asic(desc, rx_buf_sz);
2559 }
2560
2561 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2562 struct net_device *dev,
2563 struct RxDesc *desc, int rx_buf_sz,
2564 unsigned int align)
2565 {
2566 struct sk_buff *skb;
2567 dma_addr_t mapping;
2568 unsigned int pad;
2569
2570 pad = align ? align : NET_IP_ALIGN;
2571
2572 skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2573 if (!skb)
2574 goto err_out;
2575
2576 skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2577
2578 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2579 PCI_DMA_FROMDEVICE);
2580
2581 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2582 out:
2583 return skb;
2584
2585 err_out:
2586 rtl8169_make_unusable_by_asic(desc);
2587 goto out;
2588 }
2589
2590 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2591 {
2592 unsigned int i;
2593
2594 for (i = 0; i < NUM_RX_DESC; i++) {
2595 if (tp->Rx_skbuff[i]) {
2596 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2597 tp->RxDescArray + i);
2598 }
2599 }
2600 }
2601
2602 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2603 u32 start, u32 end)
2604 {
2605 u32 cur;
2606
2607 for (cur = start; end - cur != 0; cur++) {
2608 struct sk_buff *skb;
2609 unsigned int i = cur % NUM_RX_DESC;
2610
2611 WARN_ON((s32)(end - cur) < 0);
2612
2613 if (tp->Rx_skbuff[i])
2614 continue;
2615
2616 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2617 tp->RxDescArray + i,
2618 tp->rx_buf_sz, tp->align);
2619 if (!skb)
2620 break;
2621
2622 tp->Rx_skbuff[i] = skb;
2623 }
2624 return cur - start;
2625 }
2626
2627 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2628 {
2629 desc->opts1 |= cpu_to_le32(RingEnd);
2630 }
2631
2632 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2633 {
2634 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2635 }
2636
2637 static int rtl8169_init_ring(struct net_device *dev)
2638 {
2639 struct rtl8169_private *tp = netdev_priv(dev);
2640
2641 rtl8169_init_ring_indexes(tp);
2642
2643 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2644 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2645
2646 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2647 goto err_out;
2648
2649 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2650
2651 return 0;
2652
2653 err_out:
2654 rtl8169_rx_clear(tp);
2655 return -ENOMEM;
2656 }
2657
2658 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2659 struct TxDesc *desc)
2660 {
2661 unsigned int len = tx_skb->len;
2662
2663 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2664 desc->opts1 = 0x00;
2665 desc->opts2 = 0x00;
2666 desc->addr = 0x00;
2667 tx_skb->len = 0;
2668 }
2669
2670 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2671 {
2672 unsigned int i;
2673
2674 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2675 unsigned int entry = i % NUM_TX_DESC;
2676 struct ring_info *tx_skb = tp->tx_skb + entry;
2677 unsigned int len = tx_skb->len;
2678
2679 if (len) {
2680 struct sk_buff *skb = tx_skb->skb;
2681
2682 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2683 tp->TxDescArray + entry);
2684 if (skb) {
2685 dev_kfree_skb(skb);
2686 tx_skb->skb = NULL;
2687 }
2688 tp->dev->stats.tx_dropped++;
2689 }
2690 }
2691 tp->cur_tx = tp->dirty_tx = 0;
2692 }
2693
2694 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
2695 {
2696 struct rtl8169_private *tp = netdev_priv(dev);
2697
2698 PREPARE_DELAYED_WORK(&tp->task, task);
2699 schedule_delayed_work(&tp->task, 4);
2700 }
2701
2702 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2703 {
2704 struct rtl8169_private *tp = netdev_priv(dev);
2705 void __iomem *ioaddr = tp->mmio_addr;
2706
2707 synchronize_irq(dev->irq);
2708
2709 /* Wait for any pending NAPI task to complete */
2710 napi_disable(&tp->napi);
2711
2712 rtl8169_irq_mask_and_ack(ioaddr);
2713
2714 tp->intr_mask = 0xffff;
2715 RTL_W16(IntrMask, tp->intr_event);
2716 napi_enable(&tp->napi);
2717 }
2718
2719 static void rtl8169_reinit_task(struct work_struct *work)
2720 {
2721 struct rtl8169_private *tp =
2722 container_of(work, struct rtl8169_private, task.work);
2723 struct net_device *dev = tp->dev;
2724 int ret;
2725
2726 rtnl_lock();
2727
2728 if (!netif_running(dev))
2729 goto out_unlock;
2730
2731 rtl8169_wait_for_quiescence(dev);
2732 rtl8169_close(dev);
2733
2734 ret = rtl8169_open(dev);
2735 if (unlikely(ret < 0)) {
2736 if (net_ratelimit() && netif_msg_drv(tp)) {
2737 printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
2738 " Rescheduling.\n", dev->name, ret);
2739 }
2740 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2741 }
2742
2743 out_unlock:
2744 rtnl_unlock();
2745 }
2746
2747 static void rtl8169_reset_task(struct work_struct *work)
2748 {
2749 struct rtl8169_private *tp =
2750 container_of(work, struct rtl8169_private, task.work);
2751 struct net_device *dev = tp->dev;
2752
2753 rtnl_lock();
2754
2755 if (!netif_running(dev))
2756 goto out_unlock;
2757
2758 rtl8169_wait_for_quiescence(dev);
2759
2760 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
2761 rtl8169_tx_clear(tp);
2762
2763 if (tp->dirty_rx == tp->cur_rx) {
2764 rtl8169_init_ring_indexes(tp);
2765 rtl_hw_start(dev);
2766 netif_wake_queue(dev);
2767 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2768 } else {
2769 if (net_ratelimit() && netif_msg_intr(tp)) {
2770 printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
2771 dev->name);
2772 }
2773 rtl8169_schedule_work(dev, rtl8169_reset_task);
2774 }
2775
2776 out_unlock:
2777 rtnl_unlock();
2778 }
2779
2780 static void rtl8169_tx_timeout(struct net_device *dev)
2781 {
2782 struct rtl8169_private *tp = netdev_priv(dev);
2783
2784 rtl8169_hw_reset(tp->mmio_addr);
2785
2786 /* Let's wait a bit while any (async) irq lands on */
2787 rtl8169_schedule_work(dev, rtl8169_reset_task);
2788 }
2789
2790 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2791 u32 opts1)
2792 {
2793 struct skb_shared_info *info = skb_shinfo(skb);
2794 unsigned int cur_frag, entry;
2795 struct TxDesc * uninitialized_var(txd);
2796
2797 entry = tp->cur_tx;
2798 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2799 skb_frag_t *frag = info->frags + cur_frag;
2800 dma_addr_t mapping;
2801 u32 status, len;
2802 void *addr;
2803
2804 entry = (entry + 1) % NUM_TX_DESC;
2805
2806 txd = tp->TxDescArray + entry;
2807 len = frag->size;
2808 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2809 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2810
2811 /* anti gcc 2.95.3 bugware (sic) */
2812 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2813
2814 txd->opts1 = cpu_to_le32(status);
2815 txd->addr = cpu_to_le64(mapping);
2816
2817 tp->tx_skb[entry].len = len;
2818 }
2819
2820 if (cur_frag) {
2821 tp->tx_skb[entry].skb = skb;
2822 txd->opts1 |= cpu_to_le32(LastFrag);
2823 }
2824
2825 return cur_frag;
2826 }
2827
2828 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2829 {
2830 if (dev->features & NETIF_F_TSO) {
2831 u32 mss = skb_shinfo(skb)->gso_size;
2832
2833 if (mss)
2834 return LargeSend | ((mss & MSSMask) << MSSShift);
2835 }
2836 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2837 const struct iphdr *ip = ip_hdr(skb);
2838
2839 if (ip->protocol == IPPROTO_TCP)
2840 return IPCS | TCPCS;
2841 else if (ip->protocol == IPPROTO_UDP)
2842 return IPCS | UDPCS;
2843 WARN_ON(1); /* we need a WARN() */
2844 }
2845 return 0;
2846 }
2847
2848 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2849 {
2850 struct rtl8169_private *tp = netdev_priv(dev);
2851 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2852 struct TxDesc *txd = tp->TxDescArray + entry;
2853 void __iomem *ioaddr = tp->mmio_addr;
2854 dma_addr_t mapping;
2855 u32 status, len;
2856 u32 opts1;
2857 int ret = NETDEV_TX_OK;
2858
2859 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2860 if (netif_msg_drv(tp)) {
2861 printk(KERN_ERR
2862 "%s: BUG! Tx Ring full when queue awake!\n",
2863 dev->name);
2864 }
2865 goto err_stop;
2866 }
2867
2868 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2869 goto err_stop;
2870
2871 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2872
2873 frags = rtl8169_xmit_frags(tp, skb, opts1);
2874 if (frags) {
2875 len = skb_headlen(skb);
2876 opts1 |= FirstFrag;
2877 } else {
2878 len = skb->len;
2879
2880 if (unlikely(len < ETH_ZLEN)) {
2881 if (skb_padto(skb, ETH_ZLEN))
2882 goto err_update_stats;
2883 len = ETH_ZLEN;
2884 }
2885
2886 opts1 |= FirstFrag | LastFrag;
2887 tp->tx_skb[entry].skb = skb;
2888 }
2889
2890 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2891
2892 tp->tx_skb[entry].len = len;
2893 txd->addr = cpu_to_le64(mapping);
2894 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2895
2896 wmb();
2897
2898 /* anti gcc 2.95.3 bugware (sic) */
2899 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2900 txd->opts1 = cpu_to_le32(status);
2901
2902 dev->trans_start = jiffies;
2903
2904 tp->cur_tx += frags + 1;
2905
2906 smp_wmb();
2907
2908 RTL_W8(TxPoll, NPQ); /* set polling bit */
2909
2910 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2911 netif_stop_queue(dev);
2912 smp_rmb();
2913 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2914 netif_wake_queue(dev);
2915 }
2916
2917 out:
2918 return ret;
2919
2920 err_stop:
2921 netif_stop_queue(dev);
2922 ret = NETDEV_TX_BUSY;
2923 err_update_stats:
2924 dev->stats.tx_dropped++;
2925 goto out;
2926 }
2927
2928 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2929 {
2930 struct rtl8169_private *tp = netdev_priv(dev);
2931 struct pci_dev *pdev = tp->pci_dev;
2932 void __iomem *ioaddr = tp->mmio_addr;
2933 u16 pci_status, pci_cmd;
2934
2935 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2936 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2937
2938 if (netif_msg_intr(tp)) {
2939 printk(KERN_ERR
2940 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2941 dev->name, pci_cmd, pci_status);
2942 }
2943
2944 /*
2945 * The recovery sequence below admits a very elaborated explanation:
2946 * - it seems to work;
2947 * - I did not see what else could be done;
2948 * - it makes iop3xx happy.
2949 *
2950 * Feel free to adjust to your needs.
2951 */
2952 if (pdev->broken_parity_status)
2953 pci_cmd &= ~PCI_COMMAND_PARITY;
2954 else
2955 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
2956
2957 pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
2958
2959 pci_write_config_word(pdev, PCI_STATUS,
2960 pci_status & (PCI_STATUS_DETECTED_PARITY |
2961 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2962 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2963
2964 /* The infamous DAC f*ckup only happens at boot time */
2965 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2966 if (netif_msg_intr(tp))
2967 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2968 tp->cp_cmd &= ~PCIDAC;
2969 RTL_W16(CPlusCmd, tp->cp_cmd);
2970 dev->features &= ~NETIF_F_HIGHDMA;
2971 }
2972
2973 rtl8169_hw_reset(ioaddr);
2974
2975 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2976 }
2977
2978 static void rtl8169_tx_interrupt(struct net_device *dev,
2979 struct rtl8169_private *tp,
2980 void __iomem *ioaddr)
2981 {
2982 unsigned int dirty_tx, tx_left;
2983
2984 dirty_tx = tp->dirty_tx;
2985 smp_rmb();
2986 tx_left = tp->cur_tx - dirty_tx;
2987
2988 while (tx_left > 0) {
2989 unsigned int entry = dirty_tx % NUM_TX_DESC;
2990 struct ring_info *tx_skb = tp->tx_skb + entry;
2991 u32 len = tx_skb->len;
2992 u32 status;
2993
2994 rmb();
2995 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2996 if (status & DescOwn)
2997 break;
2998
2999 dev->stats.tx_bytes += len;
3000 dev->stats.tx_packets++;
3001
3002 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
3003
3004 if (status & LastFrag) {
3005 dev_kfree_skb_irq(tx_skb->skb);
3006 tx_skb->skb = NULL;
3007 }
3008 dirty_tx++;
3009 tx_left--;
3010 }
3011
3012 if (tp->dirty_tx != dirty_tx) {
3013 tp->dirty_tx = dirty_tx;
3014 smp_wmb();
3015 if (netif_queue_stopped(dev) &&
3016 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
3017 netif_wake_queue(dev);
3018 }
3019 /*
3020 * 8168 hack: TxPoll requests are lost when the Tx packets are
3021 * too close. Let's kick an extra TxPoll request when a burst
3022 * of start_xmit activity is detected (if it is not detected,
3023 * it is slow enough). -- FR
3024 */
3025 smp_rmb();
3026 if (tp->cur_tx != dirty_tx)
3027 RTL_W8(TxPoll, NPQ);
3028 }
3029 }
3030
3031 static inline int rtl8169_fragmented_frame(u32 status)
3032 {
3033 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
3034 }
3035
3036 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
3037 {
3038 u32 opts1 = le32_to_cpu(desc->opts1);
3039 u32 status = opts1 & RxProtoMask;
3040
3041 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
3042 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
3043 ((status == RxProtoIP) && !(opts1 & IPFail)))
3044 skb->ip_summed = CHECKSUM_UNNECESSARY;
3045 else
3046 skb->ip_summed = CHECKSUM_NONE;
3047 }
3048
3049 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
3050 struct rtl8169_private *tp, int pkt_size,
3051 dma_addr_t addr)
3052 {
3053 struct sk_buff *skb;
3054 bool done = false;
3055
3056 if (pkt_size >= rx_copybreak)
3057 goto out;
3058
3059 skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
3060 if (!skb)
3061 goto out;
3062
3063 pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
3064 PCI_DMA_FROMDEVICE);
3065 skb_reserve(skb, NET_IP_ALIGN);
3066 skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
3067 *sk_buff = skb;
3068 done = true;
3069 out:
3070 return done;
3071 }
3072
3073 static int rtl8169_rx_interrupt(struct net_device *dev,
3074 struct rtl8169_private *tp,
3075 void __iomem *ioaddr, u32 budget)
3076 {
3077 unsigned int cur_rx, rx_left;
3078 unsigned int delta, count;
3079
3080 cur_rx = tp->cur_rx;
3081 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3082 rx_left = min(rx_left, budget);
3083
3084 for (; rx_left > 0; rx_left--, cur_rx++) {
3085 unsigned int entry = cur_rx % NUM_RX_DESC;
3086 struct RxDesc *desc = tp->RxDescArray + entry;
3087 u32 status;
3088
3089 rmb();
3090 status = le32_to_cpu(desc->opts1);
3091
3092 if (status & DescOwn)
3093 break;
3094 if (unlikely(status & RxRES)) {
3095 if (netif_msg_rx_err(tp)) {
3096 printk(KERN_INFO
3097 "%s: Rx ERROR. status = %08x\n",
3098 dev->name, status);
3099 }
3100 dev->stats.rx_errors++;
3101 if (status & (RxRWT | RxRUNT))
3102 dev->stats.rx_length_errors++;
3103 if (status & RxCRC)
3104 dev->stats.rx_crc_errors++;
3105 if (status & RxFOVF) {
3106 rtl8169_schedule_work(dev, rtl8169_reset_task);
3107 dev->stats.rx_fifo_errors++;
3108 }
3109 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3110 } else {
3111 struct sk_buff *skb = tp->Rx_skbuff[entry];
3112 dma_addr_t addr = le64_to_cpu(desc->addr);
3113 int pkt_size = (status & 0x00001FFF) - 4;
3114 struct pci_dev *pdev = tp->pci_dev;
3115
3116 /*
3117 * The driver does not support incoming fragmented
3118 * frames. They are seen as a symptom of over-mtu
3119 * sized frames.
3120 */
3121 if (unlikely(rtl8169_fragmented_frame(status))) {
3122 dev->stats.rx_dropped++;
3123 dev->stats.rx_length_errors++;
3124 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3125 continue;
3126 }
3127
3128 rtl8169_rx_csum(skb, desc);
3129
3130 if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3131 pci_dma_sync_single_for_device(pdev, addr,
3132 pkt_size, PCI_DMA_FROMDEVICE);
3133 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3134 } else {
3135 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3136 PCI_DMA_FROMDEVICE);
3137 tp->Rx_skbuff[entry] = NULL;
3138 }
3139
3140 skb_put(skb, pkt_size);
3141 skb->protocol = eth_type_trans(skb, dev);
3142
3143 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3144 netif_receive_skb(skb);
3145
3146 dev->last_rx = jiffies;
3147 dev->stats.rx_bytes += pkt_size;
3148 dev->stats.rx_packets++;
3149 }
3150
3151 /* Work around for AMD plateform. */
3152 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3153 (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3154 desc->opts2 = 0;
3155 cur_rx++;
3156 }
3157 }
3158
3159 count = cur_rx - tp->cur_rx;
3160 tp->cur_rx = cur_rx;
3161
3162 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3163 if (!delta && count && netif_msg_intr(tp))
3164 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3165 tp->dirty_rx += delta;
3166
3167 /*
3168 * FIXME: until there is periodic timer to try and refill the ring,
3169 * a temporary shortage may definitely kill the Rx process.
3170 * - disable the asic to try and avoid an overflow and kick it again
3171 * after refill ?
3172 * - how do others driver handle this condition (Uh oh...).
3173 */
3174 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3175 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3176
3177 return count;
3178 }
3179
3180 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3181 {
3182 struct net_device *dev = dev_instance;
3183 struct rtl8169_private *tp = netdev_priv(dev);
3184 void __iomem *ioaddr = tp->mmio_addr;
3185 int handled = 0;
3186 int status;
3187
3188 status = RTL_R16(IntrStatus);
3189
3190 /* hotplug/major error/no more work/shared irq */
3191 if ((status == 0xffff) || !status)
3192 goto out;
3193
3194 handled = 1;
3195
3196 if (unlikely(!netif_running(dev))) {
3197 rtl8169_asic_down(ioaddr);
3198 goto out;
3199 }
3200
3201 status &= tp->intr_mask;
3202 RTL_W16(IntrStatus,
3203 (status & RxFIFOOver) ? (status | RxOverflow) : status);
3204
3205 if (!(status & tp->intr_event))
3206 goto out;
3207
3208 /* Work around for rx fifo overflow */
3209 if (unlikely(status & RxFIFOOver) &&
3210 (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3211 netif_stop_queue(dev);
3212 rtl8169_tx_timeout(dev);
3213 goto out;
3214 }
3215
3216 if (unlikely(status & SYSErr)) {
3217 rtl8169_pcierr_interrupt(dev);
3218 goto out;
3219 }
3220
3221 if (status & LinkChg)
3222 rtl8169_check_link_status(dev, tp, ioaddr);
3223
3224 if (status & tp->napi_event) {
3225 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3226 tp->intr_mask = ~tp->napi_event;
3227
3228 if (likely(netif_rx_schedule_prep(dev, &tp->napi)))
3229 __netif_rx_schedule(dev, &tp->napi);
3230 else if (netif_msg_intr(tp)) {
3231 printk(KERN_INFO "%s: interrupt %04x in poll\n",
3232 dev->name, status);
3233 }
3234 }
3235 out:
3236 return IRQ_RETVAL(handled);
3237 }
3238
3239 static int rtl8169_poll(struct napi_struct *napi, int budget)
3240 {
3241 struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3242 struct net_device *dev = tp->dev;
3243 void __iomem *ioaddr = tp->mmio_addr;
3244 int work_done;
3245
3246 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3247 rtl8169_tx_interrupt(dev, tp, ioaddr);
3248
3249 if (work_done < budget) {
3250 netif_rx_complete(dev, napi);
3251 tp->intr_mask = 0xffff;
3252 /*
3253 * 20040426: the barrier is not strictly required but the
3254 * behavior of the irq handler could be less predictable
3255 * without it. Btw, the lack of flush for the posted pci
3256 * write is safe - FR
3257 */
3258 smp_wmb();
3259 RTL_W16(IntrMask, tp->intr_event);
3260 }
3261
3262 return work_done;
3263 }
3264
3265 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3266 {
3267 struct rtl8169_private *tp = netdev_priv(dev);
3268
3269 if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3270 return;
3271
3272 dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3273 RTL_W32(RxMissed, 0);
3274 }
3275
3276 static void rtl8169_down(struct net_device *dev)
3277 {
3278 struct rtl8169_private *tp = netdev_priv(dev);
3279 void __iomem *ioaddr = tp->mmio_addr;
3280 unsigned int intrmask;
3281
3282 rtl8169_delete_timer(dev);
3283
3284 netif_stop_queue(dev);
3285
3286 napi_disable(&tp->napi);
3287
3288 core_down:
3289 spin_lock_irq(&tp->lock);
3290
3291 rtl8169_asic_down(ioaddr);
3292
3293 rtl8169_rx_missed(dev, ioaddr);
3294
3295 spin_unlock_irq(&tp->lock);
3296
3297 synchronize_irq(dev->irq);
3298
3299 /* Give a racing hard_start_xmit a few cycles to complete. */
3300 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
3301
3302 /*
3303 * And now for the 50k$ question: are IRQ disabled or not ?
3304 *
3305 * Two paths lead here:
3306 * 1) dev->close
3307 * -> netif_running() is available to sync the current code and the
3308 * IRQ handler. See rtl8169_interrupt for details.
3309 * 2) dev->change_mtu
3310 * -> rtl8169_poll can not be issued again and re-enable the
3311 * interruptions. Let's simply issue the IRQ down sequence again.
3312 *
3313 * No loop if hotpluged or major error (0xffff).
3314 */
3315 intrmask = RTL_R16(IntrMask);
3316 if (intrmask && (intrmask != 0xffff))
3317 goto core_down;
3318
3319 rtl8169_tx_clear(tp);
3320
3321 rtl8169_rx_clear(tp);
3322 }
3323
3324 static int rtl8169_close(struct net_device *dev)
3325 {
3326 struct rtl8169_private *tp = netdev_priv(dev);
3327 struct pci_dev *pdev = tp->pci_dev;
3328
3329 rtl8169_down(dev);
3330
3331 free_irq(dev->irq, dev);
3332
3333 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3334 tp->RxPhyAddr);
3335 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3336 tp->TxPhyAddr);
3337 tp->TxDescArray = NULL;
3338 tp->RxDescArray = NULL;
3339
3340 return 0;
3341 }
3342
3343 static void rtl_set_rx_mode(struct net_device *dev)
3344 {
3345 struct rtl8169_private *tp = netdev_priv(dev);
3346 void __iomem *ioaddr = tp->mmio_addr;
3347 unsigned long flags;
3348 u32 mc_filter[2]; /* Multicast hash filter */
3349 int rx_mode;
3350 u32 tmp = 0;
3351
3352 if (dev->flags & IFF_PROMISC) {
3353 /* Unconditionally log net taps. */
3354 if (netif_msg_link(tp)) {
3355 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3356 dev->name);
3357 }
3358 rx_mode =
3359 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3360 AcceptAllPhys;
3361 mc_filter[1] = mc_filter[0] = 0xffffffff;
3362 } else if ((dev->mc_count > multicast_filter_limit)
3363 || (dev->flags & IFF_ALLMULTI)) {
3364 /* Too many to filter perfectly -- accept all multicasts. */
3365 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3366 mc_filter[1] = mc_filter[0] = 0xffffffff;
3367 } else {
3368 struct dev_mc_list *mclist;
3369 unsigned int i;
3370
3371 rx_mode = AcceptBroadcast | AcceptMyPhys;
3372 mc_filter[1] = mc_filter[0] = 0;
3373 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3374 i++, mclist = mclist->next) {
3375 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3376 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3377 rx_mode |= AcceptMulticast;
3378 }
3379 }
3380
3381 spin_lock_irqsave(&tp->lock, flags);
3382
3383 tmp = rtl8169_rx_config | rx_mode |
3384 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3385
3386 if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3387 u32 data = mc_filter[0];
3388
3389 mc_filter[0] = swab32(mc_filter[1]);
3390 mc_filter[1] = swab32(data);
3391 }
3392
3393 RTL_W32(MAR0 + 0, mc_filter[0]);
3394 RTL_W32(MAR0 + 4, mc_filter[1]);
3395
3396 RTL_W32(RxConfig, tmp);
3397
3398 spin_unlock_irqrestore(&tp->lock, flags);
3399 }
3400
3401 /**
3402 * rtl8169_get_stats - Get rtl8169 read/write statistics
3403 * @dev: The Ethernet Device to get statistics for
3404 *
3405 * Get TX/RX statistics for rtl8169
3406 */
3407 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3408 {
3409 struct rtl8169_private *tp = netdev_priv(dev);
3410 void __iomem *ioaddr = tp->mmio_addr;
3411 unsigned long flags;
3412
3413 if (netif_running(dev)) {
3414 spin_lock_irqsave(&tp->lock, flags);
3415 rtl8169_rx_missed(dev, ioaddr);
3416 spin_unlock_irqrestore(&tp->lock, flags);
3417 }
3418
3419 return &dev->stats;
3420 }
3421
3422 #ifdef CONFIG_PM
3423
3424 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3425 {
3426 struct net_device *dev = pci_get_drvdata(pdev);
3427 struct rtl8169_private *tp = netdev_priv(dev);
3428 void __iomem *ioaddr = tp->mmio_addr;
3429
3430 if (!netif_running(dev))
3431 goto out_pci_suspend;
3432
3433 netif_device_detach(dev);
3434 netif_stop_queue(dev);
3435
3436 spin_lock_irq(&tp->lock);
3437
3438 rtl8169_asic_down(ioaddr);
3439
3440 rtl8169_rx_missed(dev, ioaddr);
3441
3442 spin_unlock_irq(&tp->lock);
3443
3444 out_pci_suspend:
3445 pci_save_state(pdev);
3446 pci_enable_wake(pdev, pci_choose_state(pdev, state),
3447 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3448 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3449
3450 return 0;
3451 }
3452
3453 static int rtl8169_resume(struct pci_dev *pdev)
3454 {
3455 struct net_device *dev = pci_get_drvdata(pdev);
3456
3457 pci_set_power_state(pdev, PCI_D0);
3458 pci_restore_state(pdev);
3459 pci_enable_wake(pdev, PCI_D0, 0);
3460
3461 if (!netif_running(dev))
3462 goto out;
3463
3464 netif_device_attach(dev);
3465
3466 rtl8169_schedule_work(dev, rtl8169_reset_task);
3467 out:
3468 return 0;
3469 }
3470
3471 #endif /* CONFIG_PM */
3472
3473 static struct pci_driver rtl8169_pci_driver = {
3474 .name = MODULENAME,
3475 .id_table = rtl8169_pci_tbl,
3476 .probe = rtl8169_init_one,
3477 .remove = __devexit_p(rtl8169_remove_one),
3478 #ifdef CONFIG_PM
3479 .suspend = rtl8169_suspend,
3480 .resume = rtl8169_resume,
3481 #endif
3482 };
3483
3484 static int __init rtl8169_init_module(void)
3485 {
3486 return pci_register_driver(&rtl8169_pci_driver);
3487 }
3488
3489 static void __exit rtl8169_cleanup_module(void)
3490 {
3491 pci_unregister_driver(&rtl8169_pci_driver);
3492 }
3493
3494 module_init(rtl8169_init_module);
3495 module_exit(rtl8169_cleanup_module);
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