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r8169: update phy init parameters
[mirror_ubuntu-zesty-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 device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts);
763
764 spin_unlock_irq(&tp->lock);
765
766 return 0;
767 }
768
769 static void rtl8169_get_drvinfo(struct net_device *dev,
770 struct ethtool_drvinfo *info)
771 {
772 struct rtl8169_private *tp = netdev_priv(dev);
773
774 strcpy(info->driver, MODULENAME);
775 strcpy(info->version, RTL8169_VERSION);
776 strcpy(info->bus_info, pci_name(tp->pci_dev));
777 }
778
779 static int rtl8169_get_regs_len(struct net_device *dev)
780 {
781 return R8169_REGS_SIZE;
782 }
783
784 static int rtl8169_set_speed_tbi(struct net_device *dev,
785 u8 autoneg, u16 speed, u8 duplex)
786 {
787 struct rtl8169_private *tp = netdev_priv(dev);
788 void __iomem *ioaddr = tp->mmio_addr;
789 int ret = 0;
790 u32 reg;
791
792 reg = RTL_R32(TBICSR);
793 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
794 (duplex == DUPLEX_FULL)) {
795 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
796 } else if (autoneg == AUTONEG_ENABLE)
797 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
798 else {
799 if (netif_msg_link(tp)) {
800 printk(KERN_WARNING "%s: "
801 "incorrect speed setting refused in TBI mode\n",
802 dev->name);
803 }
804 ret = -EOPNOTSUPP;
805 }
806
807 return ret;
808 }
809
810 static int rtl8169_set_speed_xmii(struct net_device *dev,
811 u8 autoneg, u16 speed, u8 duplex)
812 {
813 struct rtl8169_private *tp = netdev_priv(dev);
814 void __iomem *ioaddr = tp->mmio_addr;
815 int auto_nego, giga_ctrl;
816
817 auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
818 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
819 ADVERTISE_100HALF | ADVERTISE_100FULL);
820 giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
821 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
822
823 if (autoneg == AUTONEG_ENABLE) {
824 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
825 ADVERTISE_100HALF | ADVERTISE_100FULL);
826 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
827 } else {
828 if (speed == SPEED_10)
829 auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
830 else if (speed == SPEED_100)
831 auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
832 else if (speed == SPEED_1000)
833 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
834
835 if (duplex == DUPLEX_HALF)
836 auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
837
838 if (duplex == DUPLEX_FULL)
839 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
840
841 /* This tweak comes straight from Realtek's driver. */
842 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
843 ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
844 (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
845 auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
846 }
847 }
848
849 /* The 8100e/8101e/8102e do Fast Ethernet only. */
850 if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
851 (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
852 (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
853 (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
854 (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
855 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
856 (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
857 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
858 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
859 netif_msg_link(tp)) {
860 printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
861 dev->name);
862 }
863 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
864 }
865
866 auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
867
868 if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
869 (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
870 (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
871 /*
872 * Wake up the PHY.
873 * Vendor specific (0x1f) and reserved (0x0e) MII registers.
874 */
875 mdio_write(ioaddr, 0x1f, 0x0000);
876 mdio_write(ioaddr, 0x0e, 0x0000);
877 }
878
879 tp->phy_auto_nego_reg = auto_nego;
880 tp->phy_1000_ctrl_reg = giga_ctrl;
881
882 mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
883 mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
884 mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
885 return 0;
886 }
887
888 static int rtl8169_set_speed(struct net_device *dev,
889 u8 autoneg, u16 speed, u8 duplex)
890 {
891 struct rtl8169_private *tp = netdev_priv(dev);
892 int ret;
893
894 ret = tp->set_speed(dev, autoneg, speed, duplex);
895
896 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
897 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
898
899 return ret;
900 }
901
902 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
903 {
904 struct rtl8169_private *tp = netdev_priv(dev);
905 unsigned long flags;
906 int ret;
907
908 spin_lock_irqsave(&tp->lock, flags);
909 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
910 spin_unlock_irqrestore(&tp->lock, flags);
911
912 return ret;
913 }
914
915 static u32 rtl8169_get_rx_csum(struct net_device *dev)
916 {
917 struct rtl8169_private *tp = netdev_priv(dev);
918
919 return tp->cp_cmd & RxChkSum;
920 }
921
922 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
923 {
924 struct rtl8169_private *tp = netdev_priv(dev);
925 void __iomem *ioaddr = tp->mmio_addr;
926 unsigned long flags;
927
928 spin_lock_irqsave(&tp->lock, flags);
929
930 if (data)
931 tp->cp_cmd |= RxChkSum;
932 else
933 tp->cp_cmd &= ~RxChkSum;
934
935 RTL_W16(CPlusCmd, tp->cp_cmd);
936 RTL_R16(CPlusCmd);
937
938 spin_unlock_irqrestore(&tp->lock, flags);
939
940 return 0;
941 }
942
943 #ifdef CONFIG_R8169_VLAN
944
945 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
946 struct sk_buff *skb)
947 {
948 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
949 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
950 }
951
952 static void rtl8169_vlan_rx_register(struct net_device *dev,
953 struct vlan_group *grp)
954 {
955 struct rtl8169_private *tp = netdev_priv(dev);
956 void __iomem *ioaddr = tp->mmio_addr;
957 unsigned long flags;
958
959 spin_lock_irqsave(&tp->lock, flags);
960 tp->vlgrp = grp;
961 if (tp->vlgrp)
962 tp->cp_cmd |= RxVlan;
963 else
964 tp->cp_cmd &= ~RxVlan;
965 RTL_W16(CPlusCmd, tp->cp_cmd);
966 RTL_R16(CPlusCmd);
967 spin_unlock_irqrestore(&tp->lock, flags);
968 }
969
970 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
971 struct sk_buff *skb)
972 {
973 u32 opts2 = le32_to_cpu(desc->opts2);
974 struct vlan_group *vlgrp = tp->vlgrp;
975 int ret;
976
977 if (vlgrp && (opts2 & RxVlanTag)) {
978 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
979 ret = 0;
980 } else
981 ret = -1;
982 desc->opts2 = 0;
983 return ret;
984 }
985
986 #else /* !CONFIG_R8169_VLAN */
987
988 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
989 struct sk_buff *skb)
990 {
991 return 0;
992 }
993
994 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
995 struct sk_buff *skb)
996 {
997 return -1;
998 }
999
1000 #endif
1001
1002 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
1003 {
1004 struct rtl8169_private *tp = netdev_priv(dev);
1005 void __iomem *ioaddr = tp->mmio_addr;
1006 u32 status;
1007
1008 cmd->supported =
1009 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1010 cmd->port = PORT_FIBRE;
1011 cmd->transceiver = XCVR_INTERNAL;
1012
1013 status = RTL_R32(TBICSR);
1014 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
1015 cmd->autoneg = !!(status & TBINwEnable);
1016
1017 cmd->speed = SPEED_1000;
1018 cmd->duplex = DUPLEX_FULL; /* Always set */
1019
1020 return 0;
1021 }
1022
1023 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1024 {
1025 struct rtl8169_private *tp = netdev_priv(dev);
1026
1027 return mii_ethtool_gset(&tp->mii, cmd);
1028 }
1029
1030 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1031 {
1032 struct rtl8169_private *tp = netdev_priv(dev);
1033 unsigned long flags;
1034 int rc;
1035
1036 spin_lock_irqsave(&tp->lock, flags);
1037
1038 rc = tp->get_settings(dev, cmd);
1039
1040 spin_unlock_irqrestore(&tp->lock, flags);
1041 return rc;
1042 }
1043
1044 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1045 void *p)
1046 {
1047 struct rtl8169_private *tp = netdev_priv(dev);
1048 unsigned long flags;
1049
1050 if (regs->len > R8169_REGS_SIZE)
1051 regs->len = R8169_REGS_SIZE;
1052
1053 spin_lock_irqsave(&tp->lock, flags);
1054 memcpy_fromio(p, tp->mmio_addr, regs->len);
1055 spin_unlock_irqrestore(&tp->lock, flags);
1056 }
1057
1058 static u32 rtl8169_get_msglevel(struct net_device *dev)
1059 {
1060 struct rtl8169_private *tp = netdev_priv(dev);
1061
1062 return tp->msg_enable;
1063 }
1064
1065 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1066 {
1067 struct rtl8169_private *tp = netdev_priv(dev);
1068
1069 tp->msg_enable = value;
1070 }
1071
1072 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1073 "tx_packets",
1074 "rx_packets",
1075 "tx_errors",
1076 "rx_errors",
1077 "rx_missed",
1078 "align_errors",
1079 "tx_single_collisions",
1080 "tx_multi_collisions",
1081 "unicast",
1082 "broadcast",
1083 "multicast",
1084 "tx_aborted",
1085 "tx_underrun",
1086 };
1087
1088 struct rtl8169_counters {
1089 __le64 tx_packets;
1090 __le64 rx_packets;
1091 __le64 tx_errors;
1092 __le32 rx_errors;
1093 __le16 rx_missed;
1094 __le16 align_errors;
1095 __le32 tx_one_collision;
1096 __le32 tx_multi_collision;
1097 __le64 rx_unicast;
1098 __le64 rx_broadcast;
1099 __le32 rx_multicast;
1100 __le16 tx_aborted;
1101 __le16 tx_underun;
1102 };
1103
1104 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1105 {
1106 switch (sset) {
1107 case ETH_SS_STATS:
1108 return ARRAY_SIZE(rtl8169_gstrings);
1109 default:
1110 return -EOPNOTSUPP;
1111 }
1112 }
1113
1114 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1115 struct ethtool_stats *stats, u64 *data)
1116 {
1117 struct rtl8169_private *tp = netdev_priv(dev);
1118 void __iomem *ioaddr = tp->mmio_addr;
1119 struct rtl8169_counters *counters;
1120 dma_addr_t paddr;
1121 u32 cmd;
1122
1123 ASSERT_RTNL();
1124
1125 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1126 if (!counters)
1127 return;
1128
1129 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1130 cmd = (u64)paddr & DMA_32BIT_MASK;
1131 RTL_W32(CounterAddrLow, cmd);
1132 RTL_W32(CounterAddrLow, cmd | CounterDump);
1133
1134 while (RTL_R32(CounterAddrLow) & CounterDump) {
1135 if (msleep_interruptible(1))
1136 break;
1137 }
1138
1139 RTL_W32(CounterAddrLow, 0);
1140 RTL_W32(CounterAddrHigh, 0);
1141
1142 data[0] = le64_to_cpu(counters->tx_packets);
1143 data[1] = le64_to_cpu(counters->rx_packets);
1144 data[2] = le64_to_cpu(counters->tx_errors);
1145 data[3] = le32_to_cpu(counters->rx_errors);
1146 data[4] = le16_to_cpu(counters->rx_missed);
1147 data[5] = le16_to_cpu(counters->align_errors);
1148 data[6] = le32_to_cpu(counters->tx_one_collision);
1149 data[7] = le32_to_cpu(counters->tx_multi_collision);
1150 data[8] = le64_to_cpu(counters->rx_unicast);
1151 data[9] = le64_to_cpu(counters->rx_broadcast);
1152 data[10] = le32_to_cpu(counters->rx_multicast);
1153 data[11] = le16_to_cpu(counters->tx_aborted);
1154 data[12] = le16_to_cpu(counters->tx_underun);
1155
1156 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1157 }
1158
1159 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1160 {
1161 switch(stringset) {
1162 case ETH_SS_STATS:
1163 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1164 break;
1165 }
1166 }
1167
1168 static const struct ethtool_ops rtl8169_ethtool_ops = {
1169 .get_drvinfo = rtl8169_get_drvinfo,
1170 .get_regs_len = rtl8169_get_regs_len,
1171 .get_link = ethtool_op_get_link,
1172 .get_settings = rtl8169_get_settings,
1173 .set_settings = rtl8169_set_settings,
1174 .get_msglevel = rtl8169_get_msglevel,
1175 .set_msglevel = rtl8169_set_msglevel,
1176 .get_rx_csum = rtl8169_get_rx_csum,
1177 .set_rx_csum = rtl8169_set_rx_csum,
1178 .set_tx_csum = ethtool_op_set_tx_csum,
1179 .set_sg = ethtool_op_set_sg,
1180 .set_tso = ethtool_op_set_tso,
1181 .get_regs = rtl8169_get_regs,
1182 .get_wol = rtl8169_get_wol,
1183 .set_wol = rtl8169_set_wol,
1184 .get_strings = rtl8169_get_strings,
1185 .get_sset_count = rtl8169_get_sset_count,
1186 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1187 };
1188
1189 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1190 int bitnum, int bitval)
1191 {
1192 int val;
1193
1194 val = mdio_read(ioaddr, reg);
1195 val = (bitval == 1) ?
1196 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1197 mdio_write(ioaddr, reg, val & 0xffff);
1198 }
1199
1200 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1201 void __iomem *ioaddr)
1202 {
1203 /*
1204 * The driver currently handles the 8168Bf and the 8168Be identically
1205 * but they can be identified more specifically through the test below
1206 * if needed:
1207 *
1208 * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1209 *
1210 * Same thing for the 8101Eb and the 8101Ec:
1211 *
1212 * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1213 */
1214 const struct {
1215 u32 mask;
1216 u32 val;
1217 int mac_version;
1218 } mac_info[] = {
1219 /* 8168B family. */
1220 { 0x7c800000, 0x3c800000, RTL_GIGA_MAC_VER_18 },
1221 { 0x7cf00000, 0x3c000000, RTL_GIGA_MAC_VER_19 },
1222 { 0x7cf00000, 0x3c200000, RTL_GIGA_MAC_VER_20 },
1223 { 0x7c800000, 0x3c000000, RTL_GIGA_MAC_VER_20 },
1224
1225 /* 8168B family. */
1226 { 0x7cf00000, 0x38000000, RTL_GIGA_MAC_VER_12 },
1227 { 0x7cf00000, 0x38500000, RTL_GIGA_MAC_VER_17 },
1228 { 0x7c800000, 0x38000000, RTL_GIGA_MAC_VER_17 },
1229 { 0x7c800000, 0x30000000, RTL_GIGA_MAC_VER_11 },
1230
1231 /* 8101 family. */
1232 { 0x7cf00000, 0x34a00000, RTL_GIGA_MAC_VER_09 },
1233 { 0x7cf00000, 0x24a00000, RTL_GIGA_MAC_VER_09 },
1234 { 0x7cf00000, 0x34900000, RTL_GIGA_MAC_VER_08 },
1235 { 0x7cf00000, 0x24900000, RTL_GIGA_MAC_VER_08 },
1236 { 0x7cf00000, 0x34800000, RTL_GIGA_MAC_VER_07 },
1237 { 0x7cf00000, 0x24800000, RTL_GIGA_MAC_VER_07 },
1238 { 0x7cf00000, 0x34000000, RTL_GIGA_MAC_VER_13 },
1239 { 0x7cf00000, 0x34300000, RTL_GIGA_MAC_VER_10 },
1240 { 0x7cf00000, 0x34200000, RTL_GIGA_MAC_VER_16 },
1241 { 0x7c800000, 0x34800000, RTL_GIGA_MAC_VER_09 },
1242 { 0x7c800000, 0x24800000, RTL_GIGA_MAC_VER_09 },
1243 { 0x7c800000, 0x34000000, RTL_GIGA_MAC_VER_16 },
1244 /* FIXME: where did these entries come from ? -- FR */
1245 { 0xfc800000, 0x38800000, RTL_GIGA_MAC_VER_15 },
1246 { 0xfc800000, 0x30800000, RTL_GIGA_MAC_VER_14 },
1247
1248 /* 8110 family. */
1249 { 0xfc800000, 0x98000000, RTL_GIGA_MAC_VER_06 },
1250 { 0xfc800000, 0x18000000, RTL_GIGA_MAC_VER_05 },
1251 { 0xfc800000, 0x10000000, RTL_GIGA_MAC_VER_04 },
1252 { 0xfc800000, 0x04000000, RTL_GIGA_MAC_VER_03 },
1253 { 0xfc800000, 0x00800000, RTL_GIGA_MAC_VER_02 },
1254 { 0xfc800000, 0x00000000, RTL_GIGA_MAC_VER_01 },
1255
1256 { 0x00000000, 0x00000000, RTL_GIGA_MAC_VER_01 } /* Catch-all */
1257 }, *p = mac_info;
1258 u32 reg;
1259
1260 reg = RTL_R32(TxConfig);
1261 while ((reg & p->mask) != p->val)
1262 p++;
1263 tp->mac_version = p->mac_version;
1264
1265 if (p->mask == 0x00000000) {
1266 struct pci_dev *pdev = tp->pci_dev;
1267
1268 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1269 }
1270 }
1271
1272 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1273 {
1274 dprintk("mac_version = 0x%02x\n", tp->mac_version);
1275 }
1276
1277 struct phy_reg {
1278 u16 reg;
1279 u16 val;
1280 };
1281
1282 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1283 {
1284 while (len-- > 0) {
1285 mdio_write(ioaddr, regs->reg, regs->val);
1286 regs++;
1287 }
1288 }
1289
1290 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1291 {
1292 struct {
1293 u16 regs[5]; /* Beware of bit-sign propagation */
1294 } phy_magic[5] = { {
1295 { 0x0000, //w 4 15 12 0
1296 0x00a1, //w 3 15 0 00a1
1297 0x0008, //w 2 15 0 0008
1298 0x1020, //w 1 15 0 1020
1299 0x1000 } },{ //w 0 15 0 1000
1300 { 0x7000, //w 4 15 12 7
1301 0xff41, //w 3 15 0 ff41
1302 0xde60, //w 2 15 0 de60
1303 0x0140, //w 1 15 0 0140
1304 0x0077 } },{ //w 0 15 0 0077
1305 { 0xa000, //w 4 15 12 a
1306 0xdf01, //w 3 15 0 df01
1307 0xdf20, //w 2 15 0 df20
1308 0xff95, //w 1 15 0 ff95
1309 0xfa00 } },{ //w 0 15 0 fa00
1310 { 0xb000, //w 4 15 12 b
1311 0xff41, //w 3 15 0 ff41
1312 0xde20, //w 2 15 0 de20
1313 0x0140, //w 1 15 0 0140
1314 0x00bb } },{ //w 0 15 0 00bb
1315 { 0xf000, //w 4 15 12 f
1316 0xdf01, //w 3 15 0 df01
1317 0xdf20, //w 2 15 0 df20
1318 0xff95, //w 1 15 0 ff95
1319 0xbf00 } //w 0 15 0 bf00
1320 }
1321 }, *p = phy_magic;
1322 unsigned int i;
1323
1324 mdio_write(ioaddr, 0x1f, 0x0001); //w 31 2 0 1
1325 mdio_write(ioaddr, 0x15, 0x1000); //w 21 15 0 1000
1326 mdio_write(ioaddr, 0x18, 0x65c7); //w 24 15 0 65c7
1327 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1328
1329 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1330 int val, pos = 4;
1331
1332 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1333 mdio_write(ioaddr, pos, val);
1334 while (--pos >= 0)
1335 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1336 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1337 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1338 }
1339 mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1340 }
1341
1342 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1343 {
1344 struct phy_reg phy_reg_init[] = {
1345 { 0x1f, 0x0002 },
1346 { 0x01, 0x90d0 },
1347 { 0x1f, 0x0000 }
1348 };
1349
1350 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1351 }
1352
1353 static void rtl8168cp_hw_phy_config(void __iomem *ioaddr)
1354 {
1355 struct phy_reg phy_reg_init[] = {
1356 { 0x1f, 0x0000 },
1357 { 0x1d, 0x0f00 },
1358 { 0x1f, 0x0002 },
1359 { 0x0c, 0x1ec8 },
1360 { 0x1f, 0x0000 }
1361 };
1362
1363 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1364 }
1365
1366 static void rtl8168c_hw_phy_config(void __iomem *ioaddr)
1367 {
1368 struct phy_reg phy_reg_init[] = {
1369 { 0x1f, 0x0001 },
1370 { 0x12, 0x2300 },
1371 { 0x1f, 0x0002 },
1372 { 0x00, 0x88d4 },
1373 { 0x01, 0x82b1 },
1374 { 0x03, 0x7002 },
1375 { 0x08, 0x9e30 },
1376 { 0x09, 0x01f0 },
1377 { 0x0a, 0x5500 },
1378 { 0x0c, 0x00c8 },
1379 { 0x1f, 0x0003 },
1380 { 0x12, 0xc096 },
1381 { 0x16, 0x000a },
1382 { 0x1f, 0x0000 },
1383 { 0x1f, 0x0000 },
1384 { 0x09, 0x2000 },
1385 { 0x09, 0x0000 }
1386 };
1387
1388 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1389
1390 mdio_patch(ioaddr, 0x14, 1 << 5);
1391 mdio_patch(ioaddr, 0x0d, 1 << 5);
1392 mdio_write(ioaddr, 0x1f, 0x0000);
1393 }
1394
1395 static void rtl8168cx_hw_phy_config(void __iomem *ioaddr)
1396 {
1397 struct phy_reg phy_reg_init[] = {
1398 { 0x1f, 0x0001 },
1399 { 0x12, 0x2300 },
1400 { 0x03, 0x802f },
1401 { 0x02, 0x4f02 },
1402 { 0x01, 0x0409 },
1403 { 0x00, 0xf099 },
1404 { 0x04, 0x9800 },
1405 { 0x04, 0x9000 },
1406 { 0x1d, 0x3d98 },
1407 { 0x1f, 0x0002 },
1408 { 0x0c, 0x7eb8 },
1409 { 0x06, 0x0761 },
1410 { 0x1f, 0x0003 },
1411 { 0x16, 0x0f0a },
1412 { 0x1f, 0x0000 }
1413 };
1414
1415 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1416
1417 mdio_patch(ioaddr, 0x16, 1 << 0);
1418 mdio_patch(ioaddr, 0x14, 1 << 5);
1419 mdio_patch(ioaddr, 0x0d, 1 << 5);
1420 mdio_write(ioaddr, 0x1f, 0x0000);
1421 }
1422
1423 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1424 {
1425 struct phy_reg phy_reg_init[] = {
1426 { 0x1f, 0x0003 },
1427 { 0x08, 0x441d },
1428 { 0x01, 0x9100 },
1429 { 0x1f, 0x0000 }
1430 };
1431
1432 mdio_write(ioaddr, 0x1f, 0x0000);
1433 mdio_patch(ioaddr, 0x11, 1 << 12);
1434 mdio_patch(ioaddr, 0x19, 1 << 13);
1435
1436 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1437 }
1438
1439 static void rtl_hw_phy_config(struct net_device *dev)
1440 {
1441 struct rtl8169_private *tp = netdev_priv(dev);
1442 void __iomem *ioaddr = tp->mmio_addr;
1443
1444 rtl8169_print_mac_version(tp);
1445
1446 switch (tp->mac_version) {
1447 case RTL_GIGA_MAC_VER_01:
1448 break;
1449 case RTL_GIGA_MAC_VER_02:
1450 case RTL_GIGA_MAC_VER_03:
1451 rtl8169s_hw_phy_config(ioaddr);
1452 break;
1453 case RTL_GIGA_MAC_VER_04:
1454 rtl8169sb_hw_phy_config(ioaddr);
1455 break;
1456 case RTL_GIGA_MAC_VER_07:
1457 case RTL_GIGA_MAC_VER_08:
1458 case RTL_GIGA_MAC_VER_09:
1459 rtl8102e_hw_phy_config(ioaddr);
1460 break;
1461 case RTL_GIGA_MAC_VER_18:
1462 rtl8168cp_hw_phy_config(ioaddr);
1463 break;
1464 case RTL_GIGA_MAC_VER_19:
1465 rtl8168c_hw_phy_config(ioaddr);
1466 break;
1467 case RTL_GIGA_MAC_VER_20:
1468 rtl8168cx_hw_phy_config(ioaddr);
1469 break;
1470 default:
1471 break;
1472 }
1473 }
1474
1475 static void rtl8169_phy_timer(unsigned long __opaque)
1476 {
1477 struct net_device *dev = (struct net_device *)__opaque;
1478 struct rtl8169_private *tp = netdev_priv(dev);
1479 struct timer_list *timer = &tp->timer;
1480 void __iomem *ioaddr = tp->mmio_addr;
1481 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1482
1483 assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1484
1485 if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1486 return;
1487
1488 spin_lock_irq(&tp->lock);
1489
1490 if (tp->phy_reset_pending(ioaddr)) {
1491 /*
1492 * A busy loop could burn quite a few cycles on nowadays CPU.
1493 * Let's delay the execution of the timer for a few ticks.
1494 */
1495 timeout = HZ/10;
1496 goto out_mod_timer;
1497 }
1498
1499 if (tp->link_ok(ioaddr))
1500 goto out_unlock;
1501
1502 if (netif_msg_link(tp))
1503 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1504
1505 tp->phy_reset_enable(ioaddr);
1506
1507 out_mod_timer:
1508 mod_timer(timer, jiffies + timeout);
1509 out_unlock:
1510 spin_unlock_irq(&tp->lock);
1511 }
1512
1513 static inline void rtl8169_delete_timer(struct net_device *dev)
1514 {
1515 struct rtl8169_private *tp = netdev_priv(dev);
1516 struct timer_list *timer = &tp->timer;
1517
1518 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1519 return;
1520
1521 del_timer_sync(timer);
1522 }
1523
1524 static inline void rtl8169_request_timer(struct net_device *dev)
1525 {
1526 struct rtl8169_private *tp = netdev_priv(dev);
1527 struct timer_list *timer = &tp->timer;
1528
1529 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1530 return;
1531
1532 mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1533 }
1534
1535 #ifdef CONFIG_NET_POLL_CONTROLLER
1536 /*
1537 * Polling 'interrupt' - used by things like netconsole to send skbs
1538 * without having to re-enable interrupts. It's not called while
1539 * the interrupt routine is executing.
1540 */
1541 static void rtl8169_netpoll(struct net_device *dev)
1542 {
1543 struct rtl8169_private *tp = netdev_priv(dev);
1544 struct pci_dev *pdev = tp->pci_dev;
1545
1546 disable_irq(pdev->irq);
1547 rtl8169_interrupt(pdev->irq, dev);
1548 enable_irq(pdev->irq);
1549 }
1550 #endif
1551
1552 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1553 void __iomem *ioaddr)
1554 {
1555 iounmap(ioaddr);
1556 pci_release_regions(pdev);
1557 pci_disable_device(pdev);
1558 free_netdev(dev);
1559 }
1560
1561 static void rtl8169_phy_reset(struct net_device *dev,
1562 struct rtl8169_private *tp)
1563 {
1564 void __iomem *ioaddr = tp->mmio_addr;
1565 unsigned int i;
1566
1567 tp->phy_reset_enable(ioaddr);
1568 for (i = 0; i < 100; i++) {
1569 if (!tp->phy_reset_pending(ioaddr))
1570 return;
1571 msleep(1);
1572 }
1573 if (netif_msg_link(tp))
1574 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1575 }
1576
1577 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1578 {
1579 void __iomem *ioaddr = tp->mmio_addr;
1580
1581 rtl_hw_phy_config(dev);
1582
1583 if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1584 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1585 RTL_W8(0x82, 0x01);
1586 }
1587
1588 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1589
1590 if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1591 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1592
1593 if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1594 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1595 RTL_W8(0x82, 0x01);
1596 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1597 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1598 }
1599
1600 rtl8169_phy_reset(dev, tp);
1601
1602 /*
1603 * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1604 * only 8101. Don't panic.
1605 */
1606 rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1607
1608 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1609 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1610 }
1611
1612 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1613 {
1614 void __iomem *ioaddr = tp->mmio_addr;
1615 u32 high;
1616 u32 low;
1617
1618 low = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1619 high = addr[4] | (addr[5] << 8);
1620
1621 spin_lock_irq(&tp->lock);
1622
1623 RTL_W8(Cfg9346, Cfg9346_Unlock);
1624 RTL_W32(MAC0, low);
1625 RTL_W32(MAC4, high);
1626 RTL_W8(Cfg9346, Cfg9346_Lock);
1627
1628 spin_unlock_irq(&tp->lock);
1629 }
1630
1631 static int rtl_set_mac_address(struct net_device *dev, void *p)
1632 {
1633 struct rtl8169_private *tp = netdev_priv(dev);
1634 struct sockaddr *addr = p;
1635
1636 if (!is_valid_ether_addr(addr->sa_data))
1637 return -EADDRNOTAVAIL;
1638
1639 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1640
1641 rtl_rar_set(tp, dev->dev_addr);
1642
1643 return 0;
1644 }
1645
1646 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1647 {
1648 struct rtl8169_private *tp = netdev_priv(dev);
1649 struct mii_ioctl_data *data = if_mii(ifr);
1650
1651 if (!netif_running(dev))
1652 return -ENODEV;
1653
1654 switch (cmd) {
1655 case SIOCGMIIPHY:
1656 data->phy_id = 32; /* Internal PHY */
1657 return 0;
1658
1659 case SIOCGMIIREG:
1660 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1661 return 0;
1662
1663 case SIOCSMIIREG:
1664 if (!capable(CAP_NET_ADMIN))
1665 return -EPERM;
1666 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1667 return 0;
1668 }
1669 return -EOPNOTSUPP;
1670 }
1671
1672 static const struct rtl_cfg_info {
1673 void (*hw_start)(struct net_device *);
1674 unsigned int region;
1675 unsigned int align;
1676 u16 intr_event;
1677 u16 napi_event;
1678 unsigned features;
1679 } rtl_cfg_infos [] = {
1680 [RTL_CFG_0] = {
1681 .hw_start = rtl_hw_start_8169,
1682 .region = 1,
1683 .align = 0,
1684 .intr_event = SYSErr | LinkChg | RxOverflow |
1685 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1686 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1687 .features = RTL_FEATURE_GMII
1688 },
1689 [RTL_CFG_1] = {
1690 .hw_start = rtl_hw_start_8168,
1691 .region = 2,
1692 .align = 8,
1693 .intr_event = SYSErr | LinkChg | RxOverflow |
1694 TxErr | TxOK | RxOK | RxErr,
1695 .napi_event = TxErr | TxOK | RxOK | RxOverflow,
1696 .features = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1697 },
1698 [RTL_CFG_2] = {
1699 .hw_start = rtl_hw_start_8101,
1700 .region = 2,
1701 .align = 8,
1702 .intr_event = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1703 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1704 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1705 .features = RTL_FEATURE_MSI
1706 }
1707 };
1708
1709 /* Cfg9346_Unlock assumed. */
1710 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1711 const struct rtl_cfg_info *cfg)
1712 {
1713 unsigned msi = 0;
1714 u8 cfg2;
1715
1716 cfg2 = RTL_R8(Config2) & ~MSIEnable;
1717 if (cfg->features & RTL_FEATURE_MSI) {
1718 if (pci_enable_msi(pdev)) {
1719 dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1720 } else {
1721 cfg2 |= MSIEnable;
1722 msi = RTL_FEATURE_MSI;
1723 }
1724 }
1725 RTL_W8(Config2, cfg2);
1726 return msi;
1727 }
1728
1729 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1730 {
1731 if (tp->features & RTL_FEATURE_MSI) {
1732 pci_disable_msi(pdev);
1733 tp->features &= ~RTL_FEATURE_MSI;
1734 }
1735 }
1736
1737 static int rtl_eeprom_read(struct pci_dev *pdev, int cap, int addr, __le32 *val)
1738 {
1739 int ret, count = 100;
1740 u16 status = 0;
1741 u32 value;
1742
1743 ret = pci_write_config_word(pdev, cap + PCI_VPD_ADDR, addr);
1744 if (ret < 0)
1745 return ret;
1746
1747 do {
1748 udelay(10);
1749 ret = pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &status);
1750 if (ret < 0)
1751 return ret;
1752 } while (!(status & PCI_VPD_ADDR_F) && --count);
1753
1754 if (!(status & PCI_VPD_ADDR_F))
1755 return -ETIMEDOUT;
1756
1757 ret = pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &value);
1758 if (ret < 0)
1759 return ret;
1760
1761 *val = cpu_to_le32(value);
1762
1763 return 0;
1764 }
1765
1766 static void rtl_init_mac_address(struct rtl8169_private *tp,
1767 void __iomem *ioaddr)
1768 {
1769 struct pci_dev *pdev = tp->pci_dev;
1770 u8 cfg1;
1771 int vpd_cap;
1772 u8 mac[8];
1773 DECLARE_MAC_BUF(buf);
1774
1775 cfg1 = RTL_R8(Config1);
1776 if (!(cfg1 & VPD)) {
1777 dprintk("VPD access not enabled, enabling\n");
1778 RTL_W8(Cfg9346, Cfg9346_Unlock);
1779 RTL_W8(Config1, cfg1 | VPD);
1780 RTL_W8(Cfg9346, Cfg9346_Lock);
1781 }
1782
1783 vpd_cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
1784 if (!vpd_cap)
1785 return;
1786
1787 /* MAC address is stored in EEPROM at offset 0x0e
1788 * Realtek says: "The VPD address does not have to be a DWORD-aligned
1789 * address as defined in the PCI 2.2 Specifications, but the VPD data
1790 * is always consecutive 4-byte data starting from the VPD address
1791 * specified."
1792 */
1793 if (rtl_eeprom_read(pdev, vpd_cap, 0x000e, (__le32*)&mac[0]) < 0 ||
1794 rtl_eeprom_read(pdev, vpd_cap, 0x0012, (__le32*)&mac[4]) < 0) {
1795 dprintk("Reading MAC address from EEPROM failed\n");
1796 return;
1797 }
1798
1799 dprintk("MAC address found in EEPROM: %s\n", print_mac(buf, mac));
1800
1801 /* Write MAC address */
1802 rtl_rar_set(tp, mac);
1803 }
1804
1805 static int __devinit
1806 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1807 {
1808 const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1809 const unsigned int region = cfg->region;
1810 struct rtl8169_private *tp;
1811 struct mii_if_info *mii;
1812 struct net_device *dev;
1813 void __iomem *ioaddr;
1814 unsigned int i;
1815 int rc;
1816
1817 if (netif_msg_drv(&debug)) {
1818 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1819 MODULENAME, RTL8169_VERSION);
1820 }
1821
1822 dev = alloc_etherdev(sizeof (*tp));
1823 if (!dev) {
1824 if (netif_msg_drv(&debug))
1825 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1826 rc = -ENOMEM;
1827 goto out;
1828 }
1829
1830 SET_NETDEV_DEV(dev, &pdev->dev);
1831 tp = netdev_priv(dev);
1832 tp->dev = dev;
1833 tp->pci_dev = pdev;
1834 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1835
1836 mii = &tp->mii;
1837 mii->dev = dev;
1838 mii->mdio_read = rtl_mdio_read;
1839 mii->mdio_write = rtl_mdio_write;
1840 mii->phy_id_mask = 0x1f;
1841 mii->reg_num_mask = 0x1f;
1842 mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
1843
1844 /* enable device (incl. PCI PM wakeup and hotplug setup) */
1845 rc = pci_enable_device(pdev);
1846 if (rc < 0) {
1847 if (netif_msg_probe(tp))
1848 dev_err(&pdev->dev, "enable failure\n");
1849 goto err_out_free_dev_1;
1850 }
1851
1852 rc = pci_set_mwi(pdev);
1853 if (rc < 0)
1854 goto err_out_disable_2;
1855
1856 /* make sure PCI base addr 1 is MMIO */
1857 if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1858 if (netif_msg_probe(tp)) {
1859 dev_err(&pdev->dev,
1860 "region #%d not an MMIO resource, aborting\n",
1861 region);
1862 }
1863 rc = -ENODEV;
1864 goto err_out_mwi_3;
1865 }
1866
1867 /* check for weird/broken PCI region reporting */
1868 if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1869 if (netif_msg_probe(tp)) {
1870 dev_err(&pdev->dev,
1871 "Invalid PCI region size(s), aborting\n");
1872 }
1873 rc = -ENODEV;
1874 goto err_out_mwi_3;
1875 }
1876
1877 rc = pci_request_regions(pdev, MODULENAME);
1878 if (rc < 0) {
1879 if (netif_msg_probe(tp))
1880 dev_err(&pdev->dev, "could not request regions.\n");
1881 goto err_out_mwi_3;
1882 }
1883
1884 tp->cp_cmd = PCIMulRW | RxChkSum;
1885
1886 if ((sizeof(dma_addr_t) > 4) &&
1887 !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1888 tp->cp_cmd |= PCIDAC;
1889 dev->features |= NETIF_F_HIGHDMA;
1890 } else {
1891 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1892 if (rc < 0) {
1893 if (netif_msg_probe(tp)) {
1894 dev_err(&pdev->dev,
1895 "DMA configuration failed.\n");
1896 }
1897 goto err_out_free_res_4;
1898 }
1899 }
1900
1901 pci_set_master(pdev);
1902
1903 /* ioremap MMIO region */
1904 ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1905 if (!ioaddr) {
1906 if (netif_msg_probe(tp))
1907 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1908 rc = -EIO;
1909 goto err_out_free_res_4;
1910 }
1911
1912 tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
1913 if (!tp->pcie_cap && netif_msg_probe(tp))
1914 dev_info(&pdev->dev, "no PCI Express capability\n");
1915
1916 /* Unneeded ? Don't mess with Mrs. Murphy. */
1917 rtl8169_irq_mask_and_ack(ioaddr);
1918
1919 /* Soft reset the chip. */
1920 RTL_W8(ChipCmd, CmdReset);
1921
1922 /* Check that the chip has finished the reset. */
1923 for (i = 0; i < 100; i++) {
1924 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1925 break;
1926 msleep_interruptible(1);
1927 }
1928
1929 /* Identify chip attached to board */
1930 rtl8169_get_mac_version(tp, ioaddr);
1931
1932 rtl8169_print_mac_version(tp);
1933
1934 for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
1935 if (tp->mac_version == rtl_chip_info[i].mac_version)
1936 break;
1937 }
1938 if (i == ARRAY_SIZE(rtl_chip_info)) {
1939 /* Unknown chip: assume array element #0, original RTL-8169 */
1940 if (netif_msg_probe(tp)) {
1941 dev_printk(KERN_DEBUG, &pdev->dev,
1942 "unknown chip version, assuming %s\n",
1943 rtl_chip_info[0].name);
1944 }
1945 i = 0;
1946 }
1947 tp->chipset = i;
1948
1949 RTL_W8(Cfg9346, Cfg9346_Unlock);
1950 RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1951 RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1952 if ((RTL_R8(Config3) & (LinkUp | MagicPacket)) != 0)
1953 tp->features |= RTL_FEATURE_WOL;
1954 if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0)
1955 tp->features |= RTL_FEATURE_WOL;
1956 tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
1957 RTL_W8(Cfg9346, Cfg9346_Lock);
1958
1959 if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
1960 (RTL_R8(PHYstatus) & TBI_Enable)) {
1961 tp->set_speed = rtl8169_set_speed_tbi;
1962 tp->get_settings = rtl8169_gset_tbi;
1963 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1964 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1965 tp->link_ok = rtl8169_tbi_link_ok;
1966
1967 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1968 } else {
1969 tp->set_speed = rtl8169_set_speed_xmii;
1970 tp->get_settings = rtl8169_gset_xmii;
1971 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1972 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1973 tp->link_ok = rtl8169_xmii_link_ok;
1974
1975 dev->do_ioctl = rtl8169_ioctl;
1976 }
1977
1978 spin_lock_init(&tp->lock);
1979
1980 rtl_init_mac_address(tp, ioaddr);
1981
1982 /* Get MAC address */
1983 for (i = 0; i < MAC_ADDR_LEN; i++)
1984 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1985 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1986
1987 dev->open = rtl8169_open;
1988 dev->hard_start_xmit = rtl8169_start_xmit;
1989 dev->get_stats = rtl8169_get_stats;
1990 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1991 dev->stop = rtl8169_close;
1992 dev->tx_timeout = rtl8169_tx_timeout;
1993 dev->set_multicast_list = rtl_set_rx_mode;
1994 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1995 dev->irq = pdev->irq;
1996 dev->base_addr = (unsigned long) ioaddr;
1997 dev->change_mtu = rtl8169_change_mtu;
1998 dev->set_mac_address = rtl_set_mac_address;
1999
2000 netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
2001
2002 #ifdef CONFIG_R8169_VLAN
2003 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2004 dev->vlan_rx_register = rtl8169_vlan_rx_register;
2005 #endif
2006
2007 #ifdef CONFIG_NET_POLL_CONTROLLER
2008 dev->poll_controller = rtl8169_netpoll;
2009 #endif
2010
2011 tp->intr_mask = 0xffff;
2012 tp->mmio_addr = ioaddr;
2013 tp->align = cfg->align;
2014 tp->hw_start = cfg->hw_start;
2015 tp->intr_event = cfg->intr_event;
2016 tp->napi_event = cfg->napi_event;
2017
2018 init_timer(&tp->timer);
2019 tp->timer.data = (unsigned long) dev;
2020 tp->timer.function = rtl8169_phy_timer;
2021
2022 rc = register_netdev(dev);
2023 if (rc < 0)
2024 goto err_out_msi_5;
2025
2026 pci_set_drvdata(pdev, dev);
2027
2028 if (netif_msg_probe(tp)) {
2029 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
2030
2031 printk(KERN_INFO "%s: %s at 0x%lx, "
2032 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
2033 "XID %08x IRQ %d\n",
2034 dev->name,
2035 rtl_chip_info[tp->chipset].name,
2036 dev->base_addr,
2037 dev->dev_addr[0], dev->dev_addr[1],
2038 dev->dev_addr[2], dev->dev_addr[3],
2039 dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
2040 }
2041
2042 rtl8169_init_phy(dev, tp);
2043 device_set_wakeup_enable(&pdev->dev, tp->features & RTL_FEATURE_WOL);
2044
2045 out:
2046 return rc;
2047
2048 err_out_msi_5:
2049 rtl_disable_msi(pdev, tp);
2050 iounmap(ioaddr);
2051 err_out_free_res_4:
2052 pci_release_regions(pdev);
2053 err_out_mwi_3:
2054 pci_clear_mwi(pdev);
2055 err_out_disable_2:
2056 pci_disable_device(pdev);
2057 err_out_free_dev_1:
2058 free_netdev(dev);
2059 goto out;
2060 }
2061
2062 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
2063 {
2064 struct net_device *dev = pci_get_drvdata(pdev);
2065 struct rtl8169_private *tp = netdev_priv(dev);
2066
2067 flush_scheduled_work();
2068
2069 unregister_netdev(dev);
2070 rtl_disable_msi(pdev, tp);
2071 rtl8169_release_board(pdev, dev, tp->mmio_addr);
2072 pci_set_drvdata(pdev, NULL);
2073 }
2074
2075 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
2076 struct net_device *dev)
2077 {
2078 unsigned int mtu = dev->mtu;
2079
2080 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
2081 }
2082
2083 static int rtl8169_open(struct net_device *dev)
2084 {
2085 struct rtl8169_private *tp = netdev_priv(dev);
2086 struct pci_dev *pdev = tp->pci_dev;
2087 int retval = -ENOMEM;
2088
2089
2090 rtl8169_set_rxbufsize(tp, dev);
2091
2092 /*
2093 * Rx and Tx desscriptors needs 256 bytes alignment.
2094 * pci_alloc_consistent provides more.
2095 */
2096 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
2097 &tp->TxPhyAddr);
2098 if (!tp->TxDescArray)
2099 goto out;
2100
2101 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2102 &tp->RxPhyAddr);
2103 if (!tp->RxDescArray)
2104 goto err_free_tx_0;
2105
2106 retval = rtl8169_init_ring(dev);
2107 if (retval < 0)
2108 goto err_free_rx_1;
2109
2110 INIT_DELAYED_WORK(&tp->task, NULL);
2111
2112 smp_mb();
2113
2114 retval = request_irq(dev->irq, rtl8169_interrupt,
2115 (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2116 dev->name, dev);
2117 if (retval < 0)
2118 goto err_release_ring_2;
2119
2120 napi_enable(&tp->napi);
2121
2122 rtl_hw_start(dev);
2123
2124 rtl8169_request_timer(dev);
2125
2126 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2127 out:
2128 return retval;
2129
2130 err_release_ring_2:
2131 rtl8169_rx_clear(tp);
2132 err_free_rx_1:
2133 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2134 tp->RxPhyAddr);
2135 err_free_tx_0:
2136 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2137 tp->TxPhyAddr);
2138 goto out;
2139 }
2140
2141 static void rtl8169_hw_reset(void __iomem *ioaddr)
2142 {
2143 /* Disable interrupts */
2144 rtl8169_irq_mask_and_ack(ioaddr);
2145
2146 /* Reset the chipset */
2147 RTL_W8(ChipCmd, CmdReset);
2148
2149 /* PCI commit */
2150 RTL_R8(ChipCmd);
2151 }
2152
2153 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2154 {
2155 void __iomem *ioaddr = tp->mmio_addr;
2156 u32 cfg = rtl8169_rx_config;
2157
2158 cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2159 RTL_W32(RxConfig, cfg);
2160
2161 /* Set DMA burst size and Interframe Gap Time */
2162 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2163 (InterFrameGap << TxInterFrameGapShift));
2164 }
2165
2166 static void rtl_hw_start(struct net_device *dev)
2167 {
2168 struct rtl8169_private *tp = netdev_priv(dev);
2169 void __iomem *ioaddr = tp->mmio_addr;
2170 unsigned int i;
2171
2172 /* Soft reset the chip. */
2173 RTL_W8(ChipCmd, CmdReset);
2174
2175 /* Check that the chip has finished the reset. */
2176 for (i = 0; i < 100; i++) {
2177 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2178 break;
2179 msleep_interruptible(1);
2180 }
2181
2182 tp->hw_start(dev);
2183
2184 netif_start_queue(dev);
2185 }
2186
2187
2188 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2189 void __iomem *ioaddr)
2190 {
2191 /*
2192 * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2193 * register to be written before TxDescAddrLow to work.
2194 * Switching from MMIO to I/O access fixes the issue as well.
2195 */
2196 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2197 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
2198 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2199 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
2200 }
2201
2202 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2203 {
2204 u16 cmd;
2205
2206 cmd = RTL_R16(CPlusCmd);
2207 RTL_W16(CPlusCmd, cmd);
2208 return cmd;
2209 }
2210
2211 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2212 {
2213 /* Low hurts. Let's disable the filtering. */
2214 RTL_W16(RxMaxSize, 16383);
2215 }
2216
2217 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2218 {
2219 struct {
2220 u32 mac_version;
2221 u32 clk;
2222 u32 val;
2223 } cfg2_info [] = {
2224 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2225 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2226 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2227 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2228 }, *p = cfg2_info;
2229 unsigned int i;
2230 u32 clk;
2231
2232 clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2233 for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2234 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2235 RTL_W32(0x7c, p->val);
2236 break;
2237 }
2238 }
2239 }
2240
2241 static void rtl_hw_start_8169(struct net_device *dev)
2242 {
2243 struct rtl8169_private *tp = netdev_priv(dev);
2244 void __iomem *ioaddr = tp->mmio_addr;
2245 struct pci_dev *pdev = tp->pci_dev;
2246
2247 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2248 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2249 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2250 }
2251
2252 RTL_W8(Cfg9346, Cfg9346_Unlock);
2253 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2254 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2255 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2256 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2257 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2258
2259 RTL_W8(EarlyTxThres, EarlyTxThld);
2260
2261 rtl_set_rx_max_size(ioaddr);
2262
2263 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2264 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2265 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2266 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2267 rtl_set_rx_tx_config_registers(tp);
2268
2269 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2270
2271 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2272 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2273 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2274 "Bit-3 and bit-14 MUST be 1\n");
2275 tp->cp_cmd |= (1 << 14);
2276 }
2277
2278 RTL_W16(CPlusCmd, tp->cp_cmd);
2279
2280 rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2281
2282 /*
2283 * Undocumented corner. Supposedly:
2284 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2285 */
2286 RTL_W16(IntrMitigate, 0x0000);
2287
2288 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2289
2290 if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2291 (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2292 (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2293 (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2294 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2295 rtl_set_rx_tx_config_registers(tp);
2296 }
2297
2298 RTL_W8(Cfg9346, Cfg9346_Lock);
2299
2300 /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2301 RTL_R8(IntrMask);
2302
2303 RTL_W32(RxMissed, 0);
2304
2305 rtl_set_rx_mode(dev);
2306
2307 /* no early-rx interrupts */
2308 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2309
2310 /* Enable all known interrupts by setting the interrupt mask. */
2311 RTL_W16(IntrMask, tp->intr_event);
2312 }
2313
2314 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2315 {
2316 struct net_device *dev = pci_get_drvdata(pdev);
2317 struct rtl8169_private *tp = netdev_priv(dev);
2318 int cap = tp->pcie_cap;
2319
2320 if (cap) {
2321 u16 ctl;
2322
2323 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2324 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2325 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2326 }
2327 }
2328
2329 static void rtl_csi_access_enable(void __iomem *ioaddr)
2330 {
2331 u32 csi;
2332
2333 csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2334 rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2335 }
2336
2337 struct ephy_info {
2338 unsigned int offset;
2339 u16 mask;
2340 u16 bits;
2341 };
2342
2343 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2344 {
2345 u16 w;
2346
2347 while (len-- > 0) {
2348 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2349 rtl_ephy_write(ioaddr, e->offset, w);
2350 e++;
2351 }
2352 }
2353
2354 static void rtl_hw_start_8168(struct net_device *dev)
2355 {
2356 struct rtl8169_private *tp = netdev_priv(dev);
2357 void __iomem *ioaddr = tp->mmio_addr;
2358 struct pci_dev *pdev = tp->pci_dev;
2359
2360 RTL_W8(Cfg9346, Cfg9346_Unlock);
2361
2362 RTL_W8(EarlyTxThres, EarlyTxThld);
2363
2364 rtl_set_rx_max_size(ioaddr);
2365
2366 rtl_set_rx_tx_config_registers(tp);
2367
2368 tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2369
2370 RTL_W16(CPlusCmd, tp->cp_cmd);
2371
2372 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2373
2374 RTL_W16(IntrMitigate, 0x5151);
2375
2376 /* Work around for RxFIFO overflow. */
2377 if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2378 tp->intr_event |= RxFIFOOver | PCSTimeout;
2379 tp->intr_event &= ~RxOverflow;
2380 }
2381
2382 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2383
2384 RTL_W8(Cfg9346, Cfg9346_Lock);
2385
2386 RTL_R8(IntrMask);
2387
2388 rtl_set_rx_mode(dev);
2389
2390 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2391
2392 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2393
2394 RTL_W16(IntrMask, tp->intr_event);
2395 }
2396
2397 #define R810X_CPCMD_QUIRK_MASK (\
2398 EnableBist | \
2399 Mac_dbgo_oe | \
2400 Force_half_dup | \
2401 Force_half_dup | \
2402 Force_txflow_en | \
2403 Cxpl_dbg_sel | \
2404 ASF | \
2405 PktCntrDisable | \
2406 PCIDAC | \
2407 PCIMulRW)
2408
2409 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2410 {
2411 static struct ephy_info e_info_8102e_1[] = {
2412 { 0x01, 0, 0x6e65 },
2413 { 0x02, 0, 0x091f },
2414 { 0x03, 0, 0xc2f9 },
2415 { 0x06, 0, 0xafb5 },
2416 { 0x07, 0, 0x0e00 },
2417 { 0x19, 0, 0xec80 },
2418 { 0x01, 0, 0x2e65 },
2419 { 0x01, 0, 0x6e65 }
2420 };
2421 u8 cfg1;
2422
2423 rtl_csi_access_enable(ioaddr);
2424
2425 RTL_W8(DBG_REG, FIX_NAK_1);
2426
2427 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2428
2429 RTL_W8(Config1,
2430 LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2431 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2432
2433 cfg1 = RTL_R8(Config1);
2434 if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2435 RTL_W8(Config1, cfg1 & ~LEDS0);
2436
2437 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2438
2439 rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2440 }
2441
2442 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2443 {
2444 rtl_csi_access_enable(ioaddr);
2445
2446 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2447
2448 RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2449 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2450
2451 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2452 }
2453
2454 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2455 {
2456 rtl_hw_start_8102e_2(ioaddr, pdev);
2457
2458 rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2459 }
2460
2461 static void rtl_hw_start_8101(struct net_device *dev)
2462 {
2463 struct rtl8169_private *tp = netdev_priv(dev);
2464 void __iomem *ioaddr = tp->mmio_addr;
2465 struct pci_dev *pdev = tp->pci_dev;
2466
2467 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2468 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2469 int cap = tp->pcie_cap;
2470
2471 if (cap) {
2472 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2473 PCI_EXP_DEVCTL_NOSNOOP_EN);
2474 }
2475 }
2476
2477 switch (tp->mac_version) {
2478 case RTL_GIGA_MAC_VER_07:
2479 rtl_hw_start_8102e_1(ioaddr, pdev);
2480 break;
2481
2482 case RTL_GIGA_MAC_VER_08:
2483 rtl_hw_start_8102e_3(ioaddr, pdev);
2484 break;
2485
2486 case RTL_GIGA_MAC_VER_09:
2487 rtl_hw_start_8102e_2(ioaddr, pdev);
2488 break;
2489 }
2490
2491 RTL_W8(Cfg9346, Cfg9346_Unlock);
2492
2493 RTL_W8(EarlyTxThres, EarlyTxThld);
2494
2495 rtl_set_rx_max_size(ioaddr);
2496
2497 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2498
2499 RTL_W16(CPlusCmd, tp->cp_cmd);
2500
2501 RTL_W16(IntrMitigate, 0x0000);
2502
2503 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2504
2505 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2506 rtl_set_rx_tx_config_registers(tp);
2507
2508 RTL_W8(Cfg9346, Cfg9346_Lock);
2509
2510 RTL_R8(IntrMask);
2511
2512 rtl_set_rx_mode(dev);
2513
2514 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2515
2516 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2517
2518 RTL_W16(IntrMask, tp->intr_event);
2519 }
2520
2521 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2522 {
2523 struct rtl8169_private *tp = netdev_priv(dev);
2524 int ret = 0;
2525
2526 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2527 return -EINVAL;
2528
2529 dev->mtu = new_mtu;
2530
2531 if (!netif_running(dev))
2532 goto out;
2533
2534 rtl8169_down(dev);
2535
2536 rtl8169_set_rxbufsize(tp, dev);
2537
2538 ret = rtl8169_init_ring(dev);
2539 if (ret < 0)
2540 goto out;
2541
2542 napi_enable(&tp->napi);
2543
2544 rtl_hw_start(dev);
2545
2546 rtl8169_request_timer(dev);
2547
2548 out:
2549 return ret;
2550 }
2551
2552 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2553 {
2554 desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2555 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2556 }
2557
2558 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2559 struct sk_buff **sk_buff, struct RxDesc *desc)
2560 {
2561 struct pci_dev *pdev = tp->pci_dev;
2562
2563 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2564 PCI_DMA_FROMDEVICE);
2565 dev_kfree_skb(*sk_buff);
2566 *sk_buff = NULL;
2567 rtl8169_make_unusable_by_asic(desc);
2568 }
2569
2570 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2571 {
2572 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2573
2574 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2575 }
2576
2577 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2578 u32 rx_buf_sz)
2579 {
2580 desc->addr = cpu_to_le64(mapping);
2581 wmb();
2582 rtl8169_mark_to_asic(desc, rx_buf_sz);
2583 }
2584
2585 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2586 struct net_device *dev,
2587 struct RxDesc *desc, int rx_buf_sz,
2588 unsigned int align)
2589 {
2590 struct sk_buff *skb;
2591 dma_addr_t mapping;
2592 unsigned int pad;
2593
2594 pad = align ? align : NET_IP_ALIGN;
2595
2596 skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2597 if (!skb)
2598 goto err_out;
2599
2600 skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2601
2602 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2603 PCI_DMA_FROMDEVICE);
2604
2605 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2606 out:
2607 return skb;
2608
2609 err_out:
2610 rtl8169_make_unusable_by_asic(desc);
2611 goto out;
2612 }
2613
2614 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2615 {
2616 unsigned int i;
2617
2618 for (i = 0; i < NUM_RX_DESC; i++) {
2619 if (tp->Rx_skbuff[i]) {
2620 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2621 tp->RxDescArray + i);
2622 }
2623 }
2624 }
2625
2626 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2627 u32 start, u32 end)
2628 {
2629 u32 cur;
2630
2631 for (cur = start; end - cur != 0; cur++) {
2632 struct sk_buff *skb;
2633 unsigned int i = cur % NUM_RX_DESC;
2634
2635 WARN_ON((s32)(end - cur) < 0);
2636
2637 if (tp->Rx_skbuff[i])
2638 continue;
2639
2640 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2641 tp->RxDescArray + i,
2642 tp->rx_buf_sz, tp->align);
2643 if (!skb)
2644 break;
2645
2646 tp->Rx_skbuff[i] = skb;
2647 }
2648 return cur - start;
2649 }
2650
2651 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2652 {
2653 desc->opts1 |= cpu_to_le32(RingEnd);
2654 }
2655
2656 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2657 {
2658 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2659 }
2660
2661 static int rtl8169_init_ring(struct net_device *dev)
2662 {
2663 struct rtl8169_private *tp = netdev_priv(dev);
2664
2665 rtl8169_init_ring_indexes(tp);
2666
2667 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2668 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2669
2670 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2671 goto err_out;
2672
2673 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2674
2675 return 0;
2676
2677 err_out:
2678 rtl8169_rx_clear(tp);
2679 return -ENOMEM;
2680 }
2681
2682 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2683 struct TxDesc *desc)
2684 {
2685 unsigned int len = tx_skb->len;
2686
2687 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2688 desc->opts1 = 0x00;
2689 desc->opts2 = 0x00;
2690 desc->addr = 0x00;
2691 tx_skb->len = 0;
2692 }
2693
2694 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2695 {
2696 unsigned int i;
2697
2698 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2699 unsigned int entry = i % NUM_TX_DESC;
2700 struct ring_info *tx_skb = tp->tx_skb + entry;
2701 unsigned int len = tx_skb->len;
2702
2703 if (len) {
2704 struct sk_buff *skb = tx_skb->skb;
2705
2706 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2707 tp->TxDescArray + entry);
2708 if (skb) {
2709 dev_kfree_skb(skb);
2710 tx_skb->skb = NULL;
2711 }
2712 tp->dev->stats.tx_dropped++;
2713 }
2714 }
2715 tp->cur_tx = tp->dirty_tx = 0;
2716 }
2717
2718 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
2719 {
2720 struct rtl8169_private *tp = netdev_priv(dev);
2721
2722 PREPARE_DELAYED_WORK(&tp->task, task);
2723 schedule_delayed_work(&tp->task, 4);
2724 }
2725
2726 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2727 {
2728 struct rtl8169_private *tp = netdev_priv(dev);
2729 void __iomem *ioaddr = tp->mmio_addr;
2730
2731 synchronize_irq(dev->irq);
2732
2733 /* Wait for any pending NAPI task to complete */
2734 napi_disable(&tp->napi);
2735
2736 rtl8169_irq_mask_and_ack(ioaddr);
2737
2738 tp->intr_mask = 0xffff;
2739 RTL_W16(IntrMask, tp->intr_event);
2740 napi_enable(&tp->napi);
2741 }
2742
2743 static void rtl8169_reinit_task(struct work_struct *work)
2744 {
2745 struct rtl8169_private *tp =
2746 container_of(work, struct rtl8169_private, task.work);
2747 struct net_device *dev = tp->dev;
2748 int ret;
2749
2750 rtnl_lock();
2751
2752 if (!netif_running(dev))
2753 goto out_unlock;
2754
2755 rtl8169_wait_for_quiescence(dev);
2756 rtl8169_close(dev);
2757
2758 ret = rtl8169_open(dev);
2759 if (unlikely(ret < 0)) {
2760 if (net_ratelimit() && netif_msg_drv(tp)) {
2761 printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
2762 " Rescheduling.\n", dev->name, ret);
2763 }
2764 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2765 }
2766
2767 out_unlock:
2768 rtnl_unlock();
2769 }
2770
2771 static void rtl8169_reset_task(struct work_struct *work)
2772 {
2773 struct rtl8169_private *tp =
2774 container_of(work, struct rtl8169_private, task.work);
2775 struct net_device *dev = tp->dev;
2776
2777 rtnl_lock();
2778
2779 if (!netif_running(dev))
2780 goto out_unlock;
2781
2782 rtl8169_wait_for_quiescence(dev);
2783
2784 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
2785 rtl8169_tx_clear(tp);
2786
2787 if (tp->dirty_rx == tp->cur_rx) {
2788 rtl8169_init_ring_indexes(tp);
2789 rtl_hw_start(dev);
2790 netif_wake_queue(dev);
2791 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2792 } else {
2793 if (net_ratelimit() && netif_msg_intr(tp)) {
2794 printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
2795 dev->name);
2796 }
2797 rtl8169_schedule_work(dev, rtl8169_reset_task);
2798 }
2799
2800 out_unlock:
2801 rtnl_unlock();
2802 }
2803
2804 static void rtl8169_tx_timeout(struct net_device *dev)
2805 {
2806 struct rtl8169_private *tp = netdev_priv(dev);
2807
2808 rtl8169_hw_reset(tp->mmio_addr);
2809
2810 /* Let's wait a bit while any (async) irq lands on */
2811 rtl8169_schedule_work(dev, rtl8169_reset_task);
2812 }
2813
2814 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2815 u32 opts1)
2816 {
2817 struct skb_shared_info *info = skb_shinfo(skb);
2818 unsigned int cur_frag, entry;
2819 struct TxDesc * uninitialized_var(txd);
2820
2821 entry = tp->cur_tx;
2822 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2823 skb_frag_t *frag = info->frags + cur_frag;
2824 dma_addr_t mapping;
2825 u32 status, len;
2826 void *addr;
2827
2828 entry = (entry + 1) % NUM_TX_DESC;
2829
2830 txd = tp->TxDescArray + entry;
2831 len = frag->size;
2832 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2833 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2834
2835 /* anti gcc 2.95.3 bugware (sic) */
2836 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2837
2838 txd->opts1 = cpu_to_le32(status);
2839 txd->addr = cpu_to_le64(mapping);
2840
2841 tp->tx_skb[entry].len = len;
2842 }
2843
2844 if (cur_frag) {
2845 tp->tx_skb[entry].skb = skb;
2846 txd->opts1 |= cpu_to_le32(LastFrag);
2847 }
2848
2849 return cur_frag;
2850 }
2851
2852 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2853 {
2854 if (dev->features & NETIF_F_TSO) {
2855 u32 mss = skb_shinfo(skb)->gso_size;
2856
2857 if (mss)
2858 return LargeSend | ((mss & MSSMask) << MSSShift);
2859 }
2860 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2861 const struct iphdr *ip = ip_hdr(skb);
2862
2863 if (ip->protocol == IPPROTO_TCP)
2864 return IPCS | TCPCS;
2865 else if (ip->protocol == IPPROTO_UDP)
2866 return IPCS | UDPCS;
2867 WARN_ON(1); /* we need a WARN() */
2868 }
2869 return 0;
2870 }
2871
2872 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2873 {
2874 struct rtl8169_private *tp = netdev_priv(dev);
2875 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2876 struct TxDesc *txd = tp->TxDescArray + entry;
2877 void __iomem *ioaddr = tp->mmio_addr;
2878 dma_addr_t mapping;
2879 u32 status, len;
2880 u32 opts1;
2881 int ret = NETDEV_TX_OK;
2882
2883 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2884 if (netif_msg_drv(tp)) {
2885 printk(KERN_ERR
2886 "%s: BUG! Tx Ring full when queue awake!\n",
2887 dev->name);
2888 }
2889 goto err_stop;
2890 }
2891
2892 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2893 goto err_stop;
2894
2895 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2896
2897 frags = rtl8169_xmit_frags(tp, skb, opts1);
2898 if (frags) {
2899 len = skb_headlen(skb);
2900 opts1 |= FirstFrag;
2901 } else {
2902 len = skb->len;
2903
2904 if (unlikely(len < ETH_ZLEN)) {
2905 if (skb_padto(skb, ETH_ZLEN))
2906 goto err_update_stats;
2907 len = ETH_ZLEN;
2908 }
2909
2910 opts1 |= FirstFrag | LastFrag;
2911 tp->tx_skb[entry].skb = skb;
2912 }
2913
2914 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2915
2916 tp->tx_skb[entry].len = len;
2917 txd->addr = cpu_to_le64(mapping);
2918 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2919
2920 wmb();
2921
2922 /* anti gcc 2.95.3 bugware (sic) */
2923 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2924 txd->opts1 = cpu_to_le32(status);
2925
2926 dev->trans_start = jiffies;
2927
2928 tp->cur_tx += frags + 1;
2929
2930 smp_wmb();
2931
2932 RTL_W8(TxPoll, NPQ); /* set polling bit */
2933
2934 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2935 netif_stop_queue(dev);
2936 smp_rmb();
2937 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2938 netif_wake_queue(dev);
2939 }
2940
2941 out:
2942 return ret;
2943
2944 err_stop:
2945 netif_stop_queue(dev);
2946 ret = NETDEV_TX_BUSY;
2947 err_update_stats:
2948 dev->stats.tx_dropped++;
2949 goto out;
2950 }
2951
2952 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2953 {
2954 struct rtl8169_private *tp = netdev_priv(dev);
2955 struct pci_dev *pdev = tp->pci_dev;
2956 void __iomem *ioaddr = tp->mmio_addr;
2957 u16 pci_status, pci_cmd;
2958
2959 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2960 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2961
2962 if (netif_msg_intr(tp)) {
2963 printk(KERN_ERR
2964 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2965 dev->name, pci_cmd, pci_status);
2966 }
2967
2968 /*
2969 * The recovery sequence below admits a very elaborated explanation:
2970 * - it seems to work;
2971 * - I did not see what else could be done;
2972 * - it makes iop3xx happy.
2973 *
2974 * Feel free to adjust to your needs.
2975 */
2976 if (pdev->broken_parity_status)
2977 pci_cmd &= ~PCI_COMMAND_PARITY;
2978 else
2979 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
2980
2981 pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
2982
2983 pci_write_config_word(pdev, PCI_STATUS,
2984 pci_status & (PCI_STATUS_DETECTED_PARITY |
2985 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2986 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2987
2988 /* The infamous DAC f*ckup only happens at boot time */
2989 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2990 if (netif_msg_intr(tp))
2991 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2992 tp->cp_cmd &= ~PCIDAC;
2993 RTL_W16(CPlusCmd, tp->cp_cmd);
2994 dev->features &= ~NETIF_F_HIGHDMA;
2995 }
2996
2997 rtl8169_hw_reset(ioaddr);
2998
2999 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3000 }
3001
3002 static void rtl8169_tx_interrupt(struct net_device *dev,
3003 struct rtl8169_private *tp,
3004 void __iomem *ioaddr)
3005 {
3006 unsigned int dirty_tx, tx_left;
3007
3008 dirty_tx = tp->dirty_tx;
3009 smp_rmb();
3010 tx_left = tp->cur_tx - dirty_tx;
3011
3012 while (tx_left > 0) {
3013 unsigned int entry = dirty_tx % NUM_TX_DESC;
3014 struct ring_info *tx_skb = tp->tx_skb + entry;
3015 u32 len = tx_skb->len;
3016 u32 status;
3017
3018 rmb();
3019 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
3020 if (status & DescOwn)
3021 break;
3022
3023 dev->stats.tx_bytes += len;
3024 dev->stats.tx_packets++;
3025
3026 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
3027
3028 if (status & LastFrag) {
3029 dev_kfree_skb_irq(tx_skb->skb);
3030 tx_skb->skb = NULL;
3031 }
3032 dirty_tx++;
3033 tx_left--;
3034 }
3035
3036 if (tp->dirty_tx != dirty_tx) {
3037 tp->dirty_tx = dirty_tx;
3038 smp_wmb();
3039 if (netif_queue_stopped(dev) &&
3040 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
3041 netif_wake_queue(dev);
3042 }
3043 /*
3044 * 8168 hack: TxPoll requests are lost when the Tx packets are
3045 * too close. Let's kick an extra TxPoll request when a burst
3046 * of start_xmit activity is detected (if it is not detected,
3047 * it is slow enough). -- FR
3048 */
3049 smp_rmb();
3050 if (tp->cur_tx != dirty_tx)
3051 RTL_W8(TxPoll, NPQ);
3052 }
3053 }
3054
3055 static inline int rtl8169_fragmented_frame(u32 status)
3056 {
3057 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
3058 }
3059
3060 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
3061 {
3062 u32 opts1 = le32_to_cpu(desc->opts1);
3063 u32 status = opts1 & RxProtoMask;
3064
3065 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
3066 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
3067 ((status == RxProtoIP) && !(opts1 & IPFail)))
3068 skb->ip_summed = CHECKSUM_UNNECESSARY;
3069 else
3070 skb->ip_summed = CHECKSUM_NONE;
3071 }
3072
3073 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
3074 struct rtl8169_private *tp, int pkt_size,
3075 dma_addr_t addr)
3076 {
3077 struct sk_buff *skb;
3078 bool done = false;
3079
3080 if (pkt_size >= rx_copybreak)
3081 goto out;
3082
3083 skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
3084 if (!skb)
3085 goto out;
3086
3087 pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
3088 PCI_DMA_FROMDEVICE);
3089 skb_reserve(skb, NET_IP_ALIGN);
3090 skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
3091 *sk_buff = skb;
3092 done = true;
3093 out:
3094 return done;
3095 }
3096
3097 static int rtl8169_rx_interrupt(struct net_device *dev,
3098 struct rtl8169_private *tp,
3099 void __iomem *ioaddr, u32 budget)
3100 {
3101 unsigned int cur_rx, rx_left;
3102 unsigned int delta, count;
3103
3104 cur_rx = tp->cur_rx;
3105 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3106 rx_left = min(rx_left, budget);
3107
3108 for (; rx_left > 0; rx_left--, cur_rx++) {
3109 unsigned int entry = cur_rx % NUM_RX_DESC;
3110 struct RxDesc *desc = tp->RxDescArray + entry;
3111 u32 status;
3112
3113 rmb();
3114 status = le32_to_cpu(desc->opts1);
3115
3116 if (status & DescOwn)
3117 break;
3118 if (unlikely(status & RxRES)) {
3119 if (netif_msg_rx_err(tp)) {
3120 printk(KERN_INFO
3121 "%s: Rx ERROR. status = %08x\n",
3122 dev->name, status);
3123 }
3124 dev->stats.rx_errors++;
3125 if (status & (RxRWT | RxRUNT))
3126 dev->stats.rx_length_errors++;
3127 if (status & RxCRC)
3128 dev->stats.rx_crc_errors++;
3129 if (status & RxFOVF) {
3130 rtl8169_schedule_work(dev, rtl8169_reset_task);
3131 dev->stats.rx_fifo_errors++;
3132 }
3133 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3134 } else {
3135 struct sk_buff *skb = tp->Rx_skbuff[entry];
3136 dma_addr_t addr = le64_to_cpu(desc->addr);
3137 int pkt_size = (status & 0x00001FFF) - 4;
3138 struct pci_dev *pdev = tp->pci_dev;
3139
3140 /*
3141 * The driver does not support incoming fragmented
3142 * frames. They are seen as a symptom of over-mtu
3143 * sized frames.
3144 */
3145 if (unlikely(rtl8169_fragmented_frame(status))) {
3146 dev->stats.rx_dropped++;
3147 dev->stats.rx_length_errors++;
3148 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3149 continue;
3150 }
3151
3152 rtl8169_rx_csum(skb, desc);
3153
3154 if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3155 pci_dma_sync_single_for_device(pdev, addr,
3156 pkt_size, PCI_DMA_FROMDEVICE);
3157 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3158 } else {
3159 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3160 PCI_DMA_FROMDEVICE);
3161 tp->Rx_skbuff[entry] = NULL;
3162 }
3163
3164 skb_put(skb, pkt_size);
3165 skb->protocol = eth_type_trans(skb, dev);
3166
3167 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3168 netif_receive_skb(skb);
3169
3170 dev->last_rx = jiffies;
3171 dev->stats.rx_bytes += pkt_size;
3172 dev->stats.rx_packets++;
3173 }
3174
3175 /* Work around for AMD plateform. */
3176 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3177 (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3178 desc->opts2 = 0;
3179 cur_rx++;
3180 }
3181 }
3182
3183 count = cur_rx - tp->cur_rx;
3184 tp->cur_rx = cur_rx;
3185
3186 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3187 if (!delta && count && netif_msg_intr(tp))
3188 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3189 tp->dirty_rx += delta;
3190
3191 /*
3192 * FIXME: until there is periodic timer to try and refill the ring,
3193 * a temporary shortage may definitely kill the Rx process.
3194 * - disable the asic to try and avoid an overflow and kick it again
3195 * after refill ?
3196 * - how do others driver handle this condition (Uh oh...).
3197 */
3198 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3199 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3200
3201 return count;
3202 }
3203
3204 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3205 {
3206 struct net_device *dev = dev_instance;
3207 struct rtl8169_private *tp = netdev_priv(dev);
3208 void __iomem *ioaddr = tp->mmio_addr;
3209 int handled = 0;
3210 int status;
3211
3212 status = RTL_R16(IntrStatus);
3213
3214 /* hotplug/major error/no more work/shared irq */
3215 if ((status == 0xffff) || !status)
3216 goto out;
3217
3218 handled = 1;
3219
3220 if (unlikely(!netif_running(dev))) {
3221 rtl8169_asic_down(ioaddr);
3222 goto out;
3223 }
3224
3225 status &= tp->intr_mask;
3226 RTL_W16(IntrStatus,
3227 (status & RxFIFOOver) ? (status | RxOverflow) : status);
3228
3229 if (!(status & tp->intr_event))
3230 goto out;
3231
3232 /* Work around for rx fifo overflow */
3233 if (unlikely(status & RxFIFOOver) &&
3234 (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3235 netif_stop_queue(dev);
3236 rtl8169_tx_timeout(dev);
3237 goto out;
3238 }
3239
3240 if (unlikely(status & SYSErr)) {
3241 rtl8169_pcierr_interrupt(dev);
3242 goto out;
3243 }
3244
3245 if (status & LinkChg)
3246 rtl8169_check_link_status(dev, tp, ioaddr);
3247
3248 if (status & tp->napi_event) {
3249 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3250 tp->intr_mask = ~tp->napi_event;
3251
3252 if (likely(netif_rx_schedule_prep(dev, &tp->napi)))
3253 __netif_rx_schedule(dev, &tp->napi);
3254 else if (netif_msg_intr(tp)) {
3255 printk(KERN_INFO "%s: interrupt %04x in poll\n",
3256 dev->name, status);
3257 }
3258 }
3259 out:
3260 return IRQ_RETVAL(handled);
3261 }
3262
3263 static int rtl8169_poll(struct napi_struct *napi, int budget)
3264 {
3265 struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3266 struct net_device *dev = tp->dev;
3267 void __iomem *ioaddr = tp->mmio_addr;
3268 int work_done;
3269
3270 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3271 rtl8169_tx_interrupt(dev, tp, ioaddr);
3272
3273 if (work_done < budget) {
3274 netif_rx_complete(dev, napi);
3275 tp->intr_mask = 0xffff;
3276 /*
3277 * 20040426: the barrier is not strictly required but the
3278 * behavior of the irq handler could be less predictable
3279 * without it. Btw, the lack of flush for the posted pci
3280 * write is safe - FR
3281 */
3282 smp_wmb();
3283 RTL_W16(IntrMask, tp->intr_event);
3284 }
3285
3286 return work_done;
3287 }
3288
3289 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3290 {
3291 struct rtl8169_private *tp = netdev_priv(dev);
3292
3293 if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3294 return;
3295
3296 dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3297 RTL_W32(RxMissed, 0);
3298 }
3299
3300 static void rtl8169_down(struct net_device *dev)
3301 {
3302 struct rtl8169_private *tp = netdev_priv(dev);
3303 void __iomem *ioaddr = tp->mmio_addr;
3304 unsigned int intrmask;
3305
3306 rtl8169_delete_timer(dev);
3307
3308 netif_stop_queue(dev);
3309
3310 napi_disable(&tp->napi);
3311
3312 core_down:
3313 spin_lock_irq(&tp->lock);
3314
3315 rtl8169_asic_down(ioaddr);
3316
3317 rtl8169_rx_missed(dev, ioaddr);
3318
3319 spin_unlock_irq(&tp->lock);
3320
3321 synchronize_irq(dev->irq);
3322
3323 /* Give a racing hard_start_xmit a few cycles to complete. */
3324 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
3325
3326 /*
3327 * And now for the 50k$ question: are IRQ disabled or not ?
3328 *
3329 * Two paths lead here:
3330 * 1) dev->close
3331 * -> netif_running() is available to sync the current code and the
3332 * IRQ handler. See rtl8169_interrupt for details.
3333 * 2) dev->change_mtu
3334 * -> rtl8169_poll can not be issued again and re-enable the
3335 * interruptions. Let's simply issue the IRQ down sequence again.
3336 *
3337 * No loop if hotpluged or major error (0xffff).
3338 */
3339 intrmask = RTL_R16(IntrMask);
3340 if (intrmask && (intrmask != 0xffff))
3341 goto core_down;
3342
3343 rtl8169_tx_clear(tp);
3344
3345 rtl8169_rx_clear(tp);
3346 }
3347
3348 static int rtl8169_close(struct net_device *dev)
3349 {
3350 struct rtl8169_private *tp = netdev_priv(dev);
3351 struct pci_dev *pdev = tp->pci_dev;
3352
3353 rtl8169_down(dev);
3354
3355 free_irq(dev->irq, dev);
3356
3357 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3358 tp->RxPhyAddr);
3359 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3360 tp->TxPhyAddr);
3361 tp->TxDescArray = NULL;
3362 tp->RxDescArray = NULL;
3363
3364 return 0;
3365 }
3366
3367 static void rtl_set_rx_mode(struct net_device *dev)
3368 {
3369 struct rtl8169_private *tp = netdev_priv(dev);
3370 void __iomem *ioaddr = tp->mmio_addr;
3371 unsigned long flags;
3372 u32 mc_filter[2]; /* Multicast hash filter */
3373 int rx_mode;
3374 u32 tmp = 0;
3375
3376 if (dev->flags & IFF_PROMISC) {
3377 /* Unconditionally log net taps. */
3378 if (netif_msg_link(tp)) {
3379 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3380 dev->name);
3381 }
3382 rx_mode =
3383 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3384 AcceptAllPhys;
3385 mc_filter[1] = mc_filter[0] = 0xffffffff;
3386 } else if ((dev->mc_count > multicast_filter_limit)
3387 || (dev->flags & IFF_ALLMULTI)) {
3388 /* Too many to filter perfectly -- accept all multicasts. */
3389 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3390 mc_filter[1] = mc_filter[0] = 0xffffffff;
3391 } else {
3392 struct dev_mc_list *mclist;
3393 unsigned int i;
3394
3395 rx_mode = AcceptBroadcast | AcceptMyPhys;
3396 mc_filter[1] = mc_filter[0] = 0;
3397 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3398 i++, mclist = mclist->next) {
3399 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3400 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3401 rx_mode |= AcceptMulticast;
3402 }
3403 }
3404
3405 spin_lock_irqsave(&tp->lock, flags);
3406
3407 tmp = rtl8169_rx_config | rx_mode |
3408 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3409
3410 if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3411 u32 data = mc_filter[0];
3412
3413 mc_filter[0] = swab32(mc_filter[1]);
3414 mc_filter[1] = swab32(data);
3415 }
3416
3417 RTL_W32(MAR0 + 0, mc_filter[0]);
3418 RTL_W32(MAR0 + 4, mc_filter[1]);
3419
3420 RTL_W32(RxConfig, tmp);
3421
3422 spin_unlock_irqrestore(&tp->lock, flags);
3423 }
3424
3425 /**
3426 * rtl8169_get_stats - Get rtl8169 read/write statistics
3427 * @dev: The Ethernet Device to get statistics for
3428 *
3429 * Get TX/RX statistics for rtl8169
3430 */
3431 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3432 {
3433 struct rtl8169_private *tp = netdev_priv(dev);
3434 void __iomem *ioaddr = tp->mmio_addr;
3435 unsigned long flags;
3436
3437 if (netif_running(dev)) {
3438 spin_lock_irqsave(&tp->lock, flags);
3439 rtl8169_rx_missed(dev, ioaddr);
3440 spin_unlock_irqrestore(&tp->lock, flags);
3441 }
3442
3443 return &dev->stats;
3444 }
3445
3446 #ifdef CONFIG_PM
3447
3448 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3449 {
3450 struct net_device *dev = pci_get_drvdata(pdev);
3451 struct rtl8169_private *tp = netdev_priv(dev);
3452 void __iomem *ioaddr = tp->mmio_addr;
3453
3454 if (!netif_running(dev))
3455 goto out_pci_suspend;
3456
3457 netif_device_detach(dev);
3458 netif_stop_queue(dev);
3459
3460 spin_lock_irq(&tp->lock);
3461
3462 rtl8169_asic_down(ioaddr);
3463
3464 rtl8169_rx_missed(dev, ioaddr);
3465
3466 spin_unlock_irq(&tp->lock);
3467
3468 out_pci_suspend:
3469 pci_save_state(pdev);
3470 pci_enable_wake(pdev, pci_choose_state(pdev, state),
3471 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3472 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3473
3474 return 0;
3475 }
3476
3477 static int rtl8169_resume(struct pci_dev *pdev)
3478 {
3479 struct net_device *dev = pci_get_drvdata(pdev);
3480
3481 pci_set_power_state(pdev, PCI_D0);
3482 pci_restore_state(pdev);
3483 pci_enable_wake(pdev, PCI_D0, 0);
3484
3485 if (!netif_running(dev))
3486 goto out;
3487
3488 netif_device_attach(dev);
3489
3490 rtl8169_schedule_work(dev, rtl8169_reset_task);
3491 out:
3492 return 0;
3493 }
3494
3495 #endif /* CONFIG_PM */
3496
3497 static struct pci_driver rtl8169_pci_driver = {
3498 .name = MODULENAME,
3499 .id_table = rtl8169_pci_tbl,
3500 .probe = rtl8169_init_one,
3501 .remove = __devexit_p(rtl8169_remove_one),
3502 #ifdef CONFIG_PM
3503 .suspend = rtl8169_suspend,
3504 .resume = rtl8169_resume,
3505 #endif
3506 };
3507
3508 static int __init rtl8169_init_module(void)
3509 {
3510 return pci_register_driver(&rtl8169_pci_driver);
3511 }
3512
3513 static void __exit rtl8169_cleanup_module(void)
3514 {
3515 pci_unregister_driver(&rtl8169_pci_driver);
3516 }
3517
3518 module_init(rtl8169_init_module);
3519 module_exit(rtl8169_cleanup_module);
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