r8169: fix crash when large packets are received
[linux-2.6.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 SafeMtu         0x1c20  /* ... actually life sucks beyond ~7k */
70 #define InterFrameGap   0x03    /* 3 means InterFrameGap = the shortest one */
71
72 #define R8169_REGS_SIZE         256
73 #define R8169_NAPI_WEIGHT       64
74 #define NUM_TX_DESC     64      /* Number of Tx descriptor registers */
75 #define NUM_RX_DESC     256     /* Number of Rx descriptor registers */
76 #define RX_BUF_SIZE     1536    /* Rx Buffer size */
77 #define R8169_TX_RING_BYTES     (NUM_TX_DESC * sizeof(struct TxDesc))
78 #define R8169_RX_RING_BYTES     (NUM_RX_DESC * sizeof(struct RxDesc))
79
80 #define RTL8169_TX_TIMEOUT      (6*HZ)
81 #define RTL8169_PHY_TIMEOUT     (10*HZ)
82
83 #define RTL_EEPROM_SIG          cpu_to_le32(0x8129)
84 #define RTL_EEPROM_SIG_MASK     cpu_to_le32(0xffff)
85 #define RTL_EEPROM_SIG_ADDR     0x0000
86
87 /* write/read MMIO register */
88 #define RTL_W8(reg, val8)       writeb ((val8), ioaddr + (reg))
89 #define RTL_W16(reg, val16)     writew ((val16), ioaddr + (reg))
90 #define RTL_W32(reg, val32)     writel ((val32), ioaddr + (reg))
91 #define RTL_R8(reg)             readb (ioaddr + (reg))
92 #define RTL_R16(reg)            readw (ioaddr + (reg))
93 #define RTL_R32(reg)            ((unsigned long) readl (ioaddr + (reg)))
94
95 enum mac_version {
96         RTL_GIGA_MAC_VER_01 = 0x01, // 8169
97         RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
98         RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
99         RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
100         RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
101         RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
102         RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
103         RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
104         RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
105         RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
106         RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
107         RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
108         RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
109         RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
110         RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
111         RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
112         RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
113         RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
114         RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
115         RTL_GIGA_MAC_VER_20 = 0x14, // 8168C
116         RTL_GIGA_MAC_VER_21 = 0x15, // 8168C
117         RTL_GIGA_MAC_VER_22 = 0x16, // 8168C
118         RTL_GIGA_MAC_VER_23 = 0x17, // 8168CP
119         RTL_GIGA_MAC_VER_24 = 0x18, // 8168CP
120         RTL_GIGA_MAC_VER_25 = 0x19  // 8168D
121 };
122
123 #define _R(NAME,MAC,MASK) \
124         { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
125
126 static const struct {
127         const char *name;
128         u8 mac_version;
129         u32 RxConfigMask;       /* Clears the bits supported by this chip */
130 } rtl_chip_info[] = {
131         _R("RTL8169",           RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
132         _R("RTL8169s",          RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
133         _R("RTL8110s",          RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
134         _R("RTL8169sb/8110sb",  RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
135         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
136         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
137         _R("RTL8102e",          RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
138         _R("RTL8102e",          RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
139         _R("RTL8102e",          RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
140         _R("RTL8101e",          RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
141         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
142         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
143         _R("RTL8101e",          RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
144         _R("RTL8100e",          RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
145         _R("RTL8100e",          RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
146         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
147         _R("RTL8101e",          RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
148         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
149         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
150         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_20, 0xff7e1880), // PCI-E
151         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_21, 0xff7e1880), // PCI-E
152         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_22, 0xff7e1880), // PCI-E
153         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_23, 0xff7e1880), // PCI-E
154         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_24, 0xff7e1880), // PCI-E
155         _R("RTL8168d/8111d",    RTL_GIGA_MAC_VER_25, 0xff7e1880)  // PCI-E
156 };
157 #undef _R
158
159 enum cfg_version {
160         RTL_CFG_0 = 0x00,
161         RTL_CFG_1,
162         RTL_CFG_2
163 };
164
165 static void rtl_hw_start_8169(struct net_device *);
166 static void rtl_hw_start_8168(struct net_device *);
167 static void rtl_hw_start_8101(struct net_device *);
168
169 static struct pci_device_id rtl8169_pci_tbl[] = {
170         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8129), 0, 0, RTL_CFG_0 },
171         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8136), 0, 0, RTL_CFG_2 },
172         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8167), 0, 0, RTL_CFG_0 },
173         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8168), 0, 0, RTL_CFG_1 },
174         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8169), 0, 0, RTL_CFG_0 },
175         { PCI_DEVICE(PCI_VENDOR_ID_DLINK,       0x4300), 0, 0, RTL_CFG_0 },
176         { PCI_DEVICE(PCI_VENDOR_ID_AT,          0xc107), 0, 0, RTL_CFG_0 },
177         { PCI_DEVICE(0x16ec,                    0x0116), 0, 0, RTL_CFG_0 },
178         { PCI_VENDOR_ID_LINKSYS,                0x1032,
179                 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
180         { 0x0001,                               0x8168,
181                 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
182         {0,},
183 };
184
185 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
186
187 static int rx_copybreak = 200;
188 static int use_dac;
189 static struct {
190         u32 msg_enable;
191 } debug = { -1 };
192
193 enum rtl_registers {
194         MAC0            = 0,    /* Ethernet hardware address. */
195         MAC4            = 4,
196         MAR0            = 8,    /* Multicast filter. */
197         CounterAddrLow          = 0x10,
198         CounterAddrHigh         = 0x14,
199         TxDescStartAddrLow      = 0x20,
200         TxDescStartAddrHigh     = 0x24,
201         TxHDescStartAddrLow     = 0x28,
202         TxHDescStartAddrHigh    = 0x2c,
203         FLASH           = 0x30,
204         ERSR            = 0x36,
205         ChipCmd         = 0x37,
206         TxPoll          = 0x38,
207         IntrMask        = 0x3c,
208         IntrStatus      = 0x3e,
209         TxConfig        = 0x40,
210         RxConfig        = 0x44,
211         RxMissed        = 0x4c,
212         Cfg9346         = 0x50,
213         Config0         = 0x51,
214         Config1         = 0x52,
215         Config2         = 0x53,
216         Config3         = 0x54,
217         Config4         = 0x55,
218         Config5         = 0x56,
219         MultiIntr       = 0x5c,
220         PHYAR           = 0x60,
221         PHYstatus       = 0x6c,
222         RxMaxSize       = 0xda,
223         CPlusCmd        = 0xe0,
224         IntrMitigate    = 0xe2,
225         RxDescAddrLow   = 0xe4,
226         RxDescAddrHigh  = 0xe8,
227         EarlyTxThres    = 0xec,
228         FuncEvent       = 0xf0,
229         FuncEventMask   = 0xf4,
230         FuncPresetState = 0xf8,
231         FuncForceEvent  = 0xfc,
232 };
233
234 enum rtl8110_registers {
235         TBICSR                  = 0x64,
236         TBI_ANAR                = 0x68,
237         TBI_LPAR                = 0x6a,
238 };
239
240 enum rtl8168_8101_registers {
241         CSIDR                   = 0x64,
242         CSIAR                   = 0x68,
243 #define CSIAR_FLAG                      0x80000000
244 #define CSIAR_WRITE_CMD                 0x80000000
245 #define CSIAR_BYTE_ENABLE               0x0f
246 #define CSIAR_BYTE_ENABLE_SHIFT         12
247 #define CSIAR_ADDR_MASK                 0x0fff
248
249         EPHYAR                  = 0x80,
250 #define EPHYAR_FLAG                     0x80000000
251 #define EPHYAR_WRITE_CMD                0x80000000
252 #define EPHYAR_REG_MASK                 0x1f
253 #define EPHYAR_REG_SHIFT                16
254 #define EPHYAR_DATA_MASK                0xffff
255         DBG_REG                 = 0xd1,
256 #define FIX_NAK_1                       (1 << 4)
257 #define FIX_NAK_2                       (1 << 3)
258 };
259
260 enum rtl_register_content {
261         /* InterruptStatusBits */
262         SYSErr          = 0x8000,
263         PCSTimeout      = 0x4000,
264         SWInt           = 0x0100,
265         TxDescUnavail   = 0x0080,
266         RxFIFOOver      = 0x0040,
267         LinkChg         = 0x0020,
268         RxOverflow      = 0x0010,
269         TxErr           = 0x0008,
270         TxOK            = 0x0004,
271         RxErr           = 0x0002,
272         RxOK            = 0x0001,
273
274         /* RxStatusDesc */
275         RxFOVF  = (1 << 23),
276         RxRWT   = (1 << 22),
277         RxRES   = (1 << 21),
278         RxRUNT  = (1 << 20),
279         RxCRC   = (1 << 19),
280
281         /* ChipCmdBits */
282         CmdReset        = 0x10,
283         CmdRxEnb        = 0x08,
284         CmdTxEnb        = 0x04,
285         RxBufEmpty      = 0x01,
286
287         /* TXPoll register p.5 */
288         HPQ             = 0x80,         /* Poll cmd on the high prio queue */
289         NPQ             = 0x40,         /* Poll cmd on the low prio queue */
290         FSWInt          = 0x01,         /* Forced software interrupt */
291
292         /* Cfg9346Bits */
293         Cfg9346_Lock    = 0x00,
294         Cfg9346_Unlock  = 0xc0,
295
296         /* rx_mode_bits */
297         AcceptErr       = 0x20,
298         AcceptRunt      = 0x10,
299         AcceptBroadcast = 0x08,
300         AcceptMulticast = 0x04,
301         AcceptMyPhys    = 0x02,
302         AcceptAllPhys   = 0x01,
303
304         /* RxConfigBits */
305         RxCfgFIFOShift  = 13,
306         RxCfgDMAShift   =  8,
307
308         /* TxConfigBits */
309         TxInterFrameGapShift = 24,
310         TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
311
312         /* Config1 register p.24 */
313         LEDS1           = (1 << 7),
314         LEDS0           = (1 << 6),
315         MSIEnable       = (1 << 5),     /* Enable Message Signaled Interrupt */
316         Speed_down      = (1 << 4),
317         MEMMAP          = (1 << 3),
318         IOMAP           = (1 << 2),
319         VPD             = (1 << 1),
320         PMEnable        = (1 << 0),     /* Power Management Enable */
321
322         /* Config2 register p. 25 */
323         PCI_Clock_66MHz = 0x01,
324         PCI_Clock_33MHz = 0x00,
325
326         /* Config3 register p.25 */
327         MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
328         LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
329         Beacon_en       = (1 << 0),     /* 8168 only. Reserved in the 8168b */
330
331         /* Config5 register p.27 */
332         BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
333         MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
334         UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
335         LanWake         = (1 << 1),     /* LanWake enable/disable */
336         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
337
338         /* TBICSR p.28 */
339         TBIReset        = 0x80000000,
340         TBILoopback     = 0x40000000,
341         TBINwEnable     = 0x20000000,
342         TBINwRestart    = 0x10000000,
343         TBILinkOk       = 0x02000000,
344         TBINwComplete   = 0x01000000,
345
346         /* CPlusCmd p.31 */
347         EnableBist      = (1 << 15),    // 8168 8101
348         Mac_dbgo_oe     = (1 << 14),    // 8168 8101
349         Normal_mode     = (1 << 13),    // unused
350         Force_half_dup  = (1 << 12),    // 8168 8101
351         Force_rxflow_en = (1 << 11),    // 8168 8101
352         Force_txflow_en = (1 << 10),    // 8168 8101
353         Cxpl_dbg_sel    = (1 << 9),     // 8168 8101
354         ASF             = (1 << 8),     // 8168 8101
355         PktCntrDisable  = (1 << 7),     // 8168 8101
356         Mac_dbgo_sel    = 0x001c,       // 8168
357         RxVlan          = (1 << 6),
358         RxChkSum        = (1 << 5),
359         PCIDAC          = (1 << 4),
360         PCIMulRW        = (1 << 3),
361         INTT_0          = 0x0000,       // 8168
362         INTT_1          = 0x0001,       // 8168
363         INTT_2          = 0x0002,       // 8168
364         INTT_3          = 0x0003,       // 8168
365
366         /* rtl8169_PHYstatus */
367         TBI_Enable      = 0x80,
368         TxFlowCtrl      = 0x40,
369         RxFlowCtrl      = 0x20,
370         _1000bpsF       = 0x10,
371         _100bps         = 0x08,
372         _10bps          = 0x04,
373         LinkStatus      = 0x02,
374         FullDup         = 0x01,
375
376         /* _TBICSRBit */
377         TBILinkOK       = 0x02000000,
378
379         /* DumpCounterCommand */
380         CounterDump     = 0x8,
381 };
382
383 enum desc_status_bit {
384         DescOwn         = (1 << 31), /* Descriptor is owned by NIC */
385         RingEnd         = (1 << 30), /* End of descriptor ring */
386         FirstFrag       = (1 << 29), /* First segment of a packet */
387         LastFrag        = (1 << 28), /* Final segment of a packet */
388
389         /* Tx private */
390         LargeSend       = (1 << 27), /* TCP Large Send Offload (TSO) */
391         MSSShift        = 16,        /* MSS value position */
392         MSSMask         = 0xfff,     /* MSS value + LargeSend bit: 12 bits */
393         IPCS            = (1 << 18), /* Calculate IP checksum */
394         UDPCS           = (1 << 17), /* Calculate UDP/IP checksum */
395         TCPCS           = (1 << 16), /* Calculate TCP/IP checksum */
396         TxVlanTag       = (1 << 17), /* Add VLAN tag */
397
398         /* Rx private */
399         PID1            = (1 << 18), /* Protocol ID bit 1/2 */
400         PID0            = (1 << 17), /* Protocol ID bit 2/2 */
401
402 #define RxProtoUDP      (PID1)
403 #define RxProtoTCP      (PID0)
404 #define RxProtoIP       (PID1 | PID0)
405 #define RxProtoMask     RxProtoIP
406
407         IPFail          = (1 << 16), /* IP checksum failed */
408         UDPFail         = (1 << 15), /* UDP/IP checksum failed */
409         TCPFail         = (1 << 14), /* TCP/IP checksum failed */
410         RxVlanTag       = (1 << 16), /* VLAN tag available */
411 };
412
413 #define RsvdMask        0x3fffc000
414
415 struct TxDesc {
416         __le32 opts1;
417         __le32 opts2;
418         __le64 addr;
419 };
420
421 struct RxDesc {
422         __le32 opts1;
423         __le32 opts2;
424         __le64 addr;
425 };
426
427 struct ring_info {
428         struct sk_buff  *skb;
429         u32             len;
430         u8              __pad[sizeof(void *) - sizeof(u32)];
431 };
432
433 enum features {
434         RTL_FEATURE_WOL         = (1 << 0),
435         RTL_FEATURE_MSI         = (1 << 1),
436         RTL_FEATURE_GMII        = (1 << 2),
437 };
438
439 struct rtl8169_counters {
440         __le64  tx_packets;
441         __le64  rx_packets;
442         __le64  tx_errors;
443         __le32  rx_errors;
444         __le16  rx_missed;
445         __le16  align_errors;
446         __le32  tx_one_collision;
447         __le32  tx_multi_collision;
448         __le64  rx_unicast;
449         __le64  rx_broadcast;
450         __le32  rx_multicast;
451         __le16  tx_aborted;
452         __le16  tx_underun;
453 };
454
455 struct rtl8169_private {
456         void __iomem *mmio_addr;        /* memory map physical address */
457         struct pci_dev *pci_dev;        /* Index of PCI device */
458         struct net_device *dev;
459         struct napi_struct napi;
460         spinlock_t lock;                /* spin lock flag */
461         u32 msg_enable;
462         int chipset;
463         int mac_version;
464         u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
465         u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
466         u32 dirty_rx;
467         u32 dirty_tx;
468         struct TxDesc *TxDescArray;     /* 256-aligned Tx descriptor ring */
469         struct RxDesc *RxDescArray;     /* 256-aligned Rx descriptor ring */
470         dma_addr_t TxPhyAddr;
471         dma_addr_t RxPhyAddr;
472         struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
473         struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
474         unsigned align;
475         unsigned rx_buf_sz;
476         struct timer_list timer;
477         u16 cp_cmd;
478         u16 intr_event;
479         u16 napi_event;
480         u16 intr_mask;
481         int phy_auto_nego_reg;
482         int phy_1000_ctrl_reg;
483 #ifdef CONFIG_R8169_VLAN
484         struct vlan_group *vlgrp;
485 #endif
486         int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
487         int (*get_settings)(struct net_device *, struct ethtool_cmd *);
488         void (*phy_reset_enable)(void __iomem *);
489         void (*hw_start)(struct net_device *);
490         unsigned int (*phy_reset_pending)(void __iomem *);
491         unsigned int (*link_ok)(void __iomem *);
492         int (*do_ioctl)(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd);
493         int pcie_cap;
494         struct delayed_work task;
495         unsigned features;
496
497         struct mii_if_info mii;
498         struct rtl8169_counters counters;
499 };
500
501 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
502 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
503 module_param(rx_copybreak, int, 0);
504 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
505 module_param(use_dac, int, 0);
506 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
507 module_param_named(debug, debug.msg_enable, int, 0);
508 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
509 MODULE_LICENSE("GPL");
510 MODULE_VERSION(RTL8169_VERSION);
511
512 static int rtl8169_open(struct net_device *dev);
513 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
514 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
515 static int rtl8169_init_ring(struct net_device *dev);
516 static void rtl_hw_start(struct net_device *dev);
517 static int rtl8169_close(struct net_device *dev);
518 static void rtl_set_rx_mode(struct net_device *dev);
519 static void rtl8169_tx_timeout(struct net_device *dev);
520 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
521 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
522                                 void __iomem *, u32 budget);
523 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
524 static void rtl8169_down(struct net_device *dev);
525 static void rtl8169_rx_clear(struct rtl8169_private *tp);
526 static int rtl8169_poll(struct napi_struct *napi, int budget);
527
528 static const unsigned int rtl8169_rx_config =
529         (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
530
531 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
532 {
533         int i;
534
535         RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
536
537         for (i = 20; i > 0; i--) {
538                 /*
539                  * Check if the RTL8169 has completed writing to the specified
540                  * MII register.
541                  */
542                 if (!(RTL_R32(PHYAR) & 0x80000000))
543                         break;
544                 udelay(25);
545         }
546 }
547
548 static int mdio_read(void __iomem *ioaddr, int reg_addr)
549 {
550         int i, value = -1;
551
552         RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
553
554         for (i = 20; i > 0; i--) {
555                 /*
556                  * Check if the RTL8169 has completed retrieving data from
557                  * the specified MII register.
558                  */
559                 if (RTL_R32(PHYAR) & 0x80000000) {
560                         value = RTL_R32(PHYAR) & 0xffff;
561                         break;
562                 }
563                 udelay(25);
564         }
565         return value;
566 }
567
568 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
569 {
570         mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
571 }
572
573 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
574                            int val)
575 {
576         struct rtl8169_private *tp = netdev_priv(dev);
577         void __iomem *ioaddr = tp->mmio_addr;
578
579         mdio_write(ioaddr, location, val);
580 }
581
582 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
583 {
584         struct rtl8169_private *tp = netdev_priv(dev);
585         void __iomem *ioaddr = tp->mmio_addr;
586
587         return mdio_read(ioaddr, location);
588 }
589
590 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
591 {
592         unsigned int i;
593
594         RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
595                 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
596
597         for (i = 0; i < 100; i++) {
598                 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
599                         break;
600                 udelay(10);
601         }
602 }
603
604 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
605 {
606         u16 value = 0xffff;
607         unsigned int i;
608
609         RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
610
611         for (i = 0; i < 100; i++) {
612                 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
613                         value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
614                         break;
615                 }
616                 udelay(10);
617         }
618
619         return value;
620 }
621
622 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
623 {
624         unsigned int i;
625
626         RTL_W32(CSIDR, value);
627         RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
628                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
629
630         for (i = 0; i < 100; i++) {
631                 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
632                         break;
633                 udelay(10);
634         }
635 }
636
637 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
638 {
639         u32 value = ~0x00;
640         unsigned int i;
641
642         RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
643                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
644
645         for (i = 0; i < 100; i++) {
646                 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
647                         value = RTL_R32(CSIDR);
648                         break;
649                 }
650                 udelay(10);
651         }
652
653         return value;
654 }
655
656 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
657 {
658         RTL_W16(IntrMask, 0x0000);
659
660         RTL_W16(IntrStatus, 0xffff);
661 }
662
663 static void rtl8169_asic_down(void __iomem *ioaddr)
664 {
665         RTL_W8(ChipCmd, 0x00);
666         rtl8169_irq_mask_and_ack(ioaddr);
667         RTL_R16(CPlusCmd);
668 }
669
670 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
671 {
672         return RTL_R32(TBICSR) & TBIReset;
673 }
674
675 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
676 {
677         return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
678 }
679
680 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
681 {
682         return RTL_R32(TBICSR) & TBILinkOk;
683 }
684
685 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
686 {
687         return RTL_R8(PHYstatus) & LinkStatus;
688 }
689
690 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
691 {
692         RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
693 }
694
695 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
696 {
697         unsigned int val;
698
699         val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
700         mdio_write(ioaddr, MII_BMCR, val & 0xffff);
701 }
702
703 static void rtl8169_check_link_status(struct net_device *dev,
704                                       struct rtl8169_private *tp,
705                                       void __iomem *ioaddr)
706 {
707         unsigned long flags;
708
709         spin_lock_irqsave(&tp->lock, flags);
710         if (tp->link_ok(ioaddr)) {
711                 netif_carrier_on(dev);
712                 if (netif_msg_ifup(tp))
713                         printk(KERN_INFO PFX "%s: link up\n", dev->name);
714         } else {
715                 if (netif_msg_ifdown(tp))
716                         printk(KERN_INFO PFX "%s: link down\n", dev->name);
717                 netif_carrier_off(dev);
718         }
719         spin_unlock_irqrestore(&tp->lock, flags);
720 }
721
722 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
723 {
724         struct rtl8169_private *tp = netdev_priv(dev);
725         void __iomem *ioaddr = tp->mmio_addr;
726         u8 options;
727
728         wol->wolopts = 0;
729
730 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
731         wol->supported = WAKE_ANY;
732
733         spin_lock_irq(&tp->lock);
734
735         options = RTL_R8(Config1);
736         if (!(options & PMEnable))
737                 goto out_unlock;
738
739         options = RTL_R8(Config3);
740         if (options & LinkUp)
741                 wol->wolopts |= WAKE_PHY;
742         if (options & MagicPacket)
743                 wol->wolopts |= WAKE_MAGIC;
744
745         options = RTL_R8(Config5);
746         if (options & UWF)
747                 wol->wolopts |= WAKE_UCAST;
748         if (options & BWF)
749                 wol->wolopts |= WAKE_BCAST;
750         if (options & MWF)
751                 wol->wolopts |= WAKE_MCAST;
752
753 out_unlock:
754         spin_unlock_irq(&tp->lock);
755 }
756
757 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
758 {
759         struct rtl8169_private *tp = netdev_priv(dev);
760         void __iomem *ioaddr = tp->mmio_addr;
761         unsigned int i;
762         static struct {
763                 u32 opt;
764                 u16 reg;
765                 u8  mask;
766         } cfg[] = {
767                 { WAKE_ANY,   Config1, PMEnable },
768                 { WAKE_PHY,   Config3, LinkUp },
769                 { WAKE_MAGIC, Config3, MagicPacket },
770                 { WAKE_UCAST, Config5, UWF },
771                 { WAKE_BCAST, Config5, BWF },
772                 { WAKE_MCAST, Config5, MWF },
773                 { WAKE_ANY,   Config5, LanWake }
774         };
775
776         spin_lock_irq(&tp->lock);
777
778         RTL_W8(Cfg9346, Cfg9346_Unlock);
779
780         for (i = 0; i < ARRAY_SIZE(cfg); i++) {
781                 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
782                 if (wol->wolopts & cfg[i].opt)
783                         options |= cfg[i].mask;
784                 RTL_W8(cfg[i].reg, options);
785         }
786
787         RTL_W8(Cfg9346, Cfg9346_Lock);
788
789         if (wol->wolopts)
790                 tp->features |= RTL_FEATURE_WOL;
791         else
792                 tp->features &= ~RTL_FEATURE_WOL;
793         device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts);
794
795         spin_unlock_irq(&tp->lock);
796
797         return 0;
798 }
799
800 static void rtl8169_get_drvinfo(struct net_device *dev,
801                                 struct ethtool_drvinfo *info)
802 {
803         struct rtl8169_private *tp = netdev_priv(dev);
804
805         strcpy(info->driver, MODULENAME);
806         strcpy(info->version, RTL8169_VERSION);
807         strcpy(info->bus_info, pci_name(tp->pci_dev));
808 }
809
810 static int rtl8169_get_regs_len(struct net_device *dev)
811 {
812         return R8169_REGS_SIZE;
813 }
814
815 static int rtl8169_set_speed_tbi(struct net_device *dev,
816                                  u8 autoneg, u16 speed, u8 duplex)
817 {
818         struct rtl8169_private *tp = netdev_priv(dev);
819         void __iomem *ioaddr = tp->mmio_addr;
820         int ret = 0;
821         u32 reg;
822
823         reg = RTL_R32(TBICSR);
824         if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
825             (duplex == DUPLEX_FULL)) {
826                 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
827         } else if (autoneg == AUTONEG_ENABLE)
828                 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
829         else {
830                 if (netif_msg_link(tp)) {
831                         printk(KERN_WARNING "%s: "
832                                "incorrect speed setting refused in TBI mode\n",
833                                dev->name);
834                 }
835                 ret = -EOPNOTSUPP;
836         }
837
838         return ret;
839 }
840
841 static int rtl8169_set_speed_xmii(struct net_device *dev,
842                                   u8 autoneg, u16 speed, u8 duplex)
843 {
844         struct rtl8169_private *tp = netdev_priv(dev);
845         void __iomem *ioaddr = tp->mmio_addr;
846         int auto_nego, giga_ctrl;
847
848         auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
849         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
850                        ADVERTISE_100HALF | ADVERTISE_100FULL);
851         giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
852         giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
853
854         if (autoneg == AUTONEG_ENABLE) {
855                 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
856                               ADVERTISE_100HALF | ADVERTISE_100FULL);
857                 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
858         } else {
859                 if (speed == SPEED_10)
860                         auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
861                 else if (speed == SPEED_100)
862                         auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
863                 else if (speed == SPEED_1000)
864                         giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
865
866                 if (duplex == DUPLEX_HALF)
867                         auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
868
869                 if (duplex == DUPLEX_FULL)
870                         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
871
872                 /* This tweak comes straight from Realtek's driver. */
873                 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
874                     ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
875                      (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
876                         auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
877                 }
878         }
879
880         /* The 8100e/8101e/8102e do Fast Ethernet only. */
881         if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
882             (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
883             (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
884             (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
885             (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
886             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
887             (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
888             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
889                 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
890                     netif_msg_link(tp)) {
891                         printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
892                                dev->name);
893                 }
894                 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
895         }
896
897         auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
898
899         if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
900             (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
901             (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
902                 /*
903                  * Wake up the PHY.
904                  * Vendor specific (0x1f) and reserved (0x0e) MII registers.
905                  */
906                 mdio_write(ioaddr, 0x1f, 0x0000);
907                 mdio_write(ioaddr, 0x0e, 0x0000);
908         }
909
910         tp->phy_auto_nego_reg = auto_nego;
911         tp->phy_1000_ctrl_reg = giga_ctrl;
912
913         mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
914         mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
915         mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
916         return 0;
917 }
918
919 static int rtl8169_set_speed(struct net_device *dev,
920                              u8 autoneg, u16 speed, u8 duplex)
921 {
922         struct rtl8169_private *tp = netdev_priv(dev);
923         int ret;
924
925         ret = tp->set_speed(dev, autoneg, speed, duplex);
926
927         if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
928                 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
929
930         return ret;
931 }
932
933 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
934 {
935         struct rtl8169_private *tp = netdev_priv(dev);
936         unsigned long flags;
937         int ret;
938
939         spin_lock_irqsave(&tp->lock, flags);
940         ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
941         spin_unlock_irqrestore(&tp->lock, flags);
942
943         return ret;
944 }
945
946 static u32 rtl8169_get_rx_csum(struct net_device *dev)
947 {
948         struct rtl8169_private *tp = netdev_priv(dev);
949
950         return tp->cp_cmd & RxChkSum;
951 }
952
953 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
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
961         if (data)
962                 tp->cp_cmd |= RxChkSum;
963         else
964                 tp->cp_cmd &= ~RxChkSum;
965
966         RTL_W16(CPlusCmd, tp->cp_cmd);
967         RTL_R16(CPlusCmd);
968
969         spin_unlock_irqrestore(&tp->lock, flags);
970
971         return 0;
972 }
973
974 #ifdef CONFIG_R8169_VLAN
975
976 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
977                                       struct sk_buff *skb)
978 {
979         return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
980                 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
981 }
982
983 static void rtl8169_vlan_rx_register(struct net_device *dev,
984                                      struct vlan_group *grp)
985 {
986         struct rtl8169_private *tp = netdev_priv(dev);
987         void __iomem *ioaddr = tp->mmio_addr;
988         unsigned long flags;
989
990         spin_lock_irqsave(&tp->lock, flags);
991         tp->vlgrp = grp;
992         if (tp->vlgrp)
993                 tp->cp_cmd |= RxVlan;
994         else
995                 tp->cp_cmd &= ~RxVlan;
996         RTL_W16(CPlusCmd, tp->cp_cmd);
997         RTL_R16(CPlusCmd);
998         spin_unlock_irqrestore(&tp->lock, flags);
999 }
1000
1001 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1002                                struct sk_buff *skb)
1003 {
1004         u32 opts2 = le32_to_cpu(desc->opts2);
1005         struct vlan_group *vlgrp = tp->vlgrp;
1006         int ret;
1007
1008         if (vlgrp && (opts2 & RxVlanTag)) {
1009                 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
1010                 ret = 0;
1011         } else
1012                 ret = -1;
1013         desc->opts2 = 0;
1014         return ret;
1015 }
1016
1017 #else /* !CONFIG_R8169_VLAN */
1018
1019 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
1020                                       struct sk_buff *skb)
1021 {
1022         return 0;
1023 }
1024
1025 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1026                                struct sk_buff *skb)
1027 {
1028         return -1;
1029 }
1030
1031 #endif
1032
1033 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
1034 {
1035         struct rtl8169_private *tp = netdev_priv(dev);
1036         void __iomem *ioaddr = tp->mmio_addr;
1037         u32 status;
1038
1039         cmd->supported =
1040                 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1041         cmd->port = PORT_FIBRE;
1042         cmd->transceiver = XCVR_INTERNAL;
1043
1044         status = RTL_R32(TBICSR);
1045         cmd->advertising = (status & TBINwEnable) ?  ADVERTISED_Autoneg : 0;
1046         cmd->autoneg = !!(status & TBINwEnable);
1047
1048         cmd->speed = SPEED_1000;
1049         cmd->duplex = DUPLEX_FULL; /* Always set */
1050
1051         return 0;
1052 }
1053
1054 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1055 {
1056         struct rtl8169_private *tp = netdev_priv(dev);
1057
1058         return mii_ethtool_gset(&tp->mii, cmd);
1059 }
1060
1061 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1062 {
1063         struct rtl8169_private *tp = netdev_priv(dev);
1064         unsigned long flags;
1065         int rc;
1066
1067         spin_lock_irqsave(&tp->lock, flags);
1068
1069         rc = tp->get_settings(dev, cmd);
1070
1071         spin_unlock_irqrestore(&tp->lock, flags);
1072         return rc;
1073 }
1074
1075 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1076                              void *p)
1077 {
1078         struct rtl8169_private *tp = netdev_priv(dev);
1079         unsigned long flags;
1080
1081         if (regs->len > R8169_REGS_SIZE)
1082                 regs->len = R8169_REGS_SIZE;
1083
1084         spin_lock_irqsave(&tp->lock, flags);
1085         memcpy_fromio(p, tp->mmio_addr, regs->len);
1086         spin_unlock_irqrestore(&tp->lock, flags);
1087 }
1088
1089 static u32 rtl8169_get_msglevel(struct net_device *dev)
1090 {
1091         struct rtl8169_private *tp = netdev_priv(dev);
1092
1093         return tp->msg_enable;
1094 }
1095
1096 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1097 {
1098         struct rtl8169_private *tp = netdev_priv(dev);
1099
1100         tp->msg_enable = value;
1101 }
1102
1103 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1104         "tx_packets",
1105         "rx_packets",
1106         "tx_errors",
1107         "rx_errors",
1108         "rx_missed",
1109         "align_errors",
1110         "tx_single_collisions",
1111         "tx_multi_collisions",
1112         "unicast",
1113         "broadcast",
1114         "multicast",
1115         "tx_aborted",
1116         "tx_underrun",
1117 };
1118
1119 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1120 {
1121         switch (sset) {
1122         case ETH_SS_STATS:
1123                 return ARRAY_SIZE(rtl8169_gstrings);
1124         default:
1125                 return -EOPNOTSUPP;
1126         }
1127 }
1128
1129 static void rtl8169_update_counters(struct net_device *dev)
1130 {
1131         struct rtl8169_private *tp = netdev_priv(dev);
1132         void __iomem *ioaddr = tp->mmio_addr;
1133         struct rtl8169_counters *counters;
1134         dma_addr_t paddr;
1135         u32 cmd;
1136         int wait = 1000;
1137
1138         /*
1139          * Some chips are unable to dump tally counters when the receiver
1140          * is disabled.
1141          */
1142         if ((RTL_R8(ChipCmd) & CmdRxEnb) == 0)
1143                 return;
1144
1145         counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1146         if (!counters)
1147                 return;
1148
1149         RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1150         cmd = (u64)paddr & DMA_BIT_MASK(32);
1151         RTL_W32(CounterAddrLow, cmd);
1152         RTL_W32(CounterAddrLow, cmd | CounterDump);
1153
1154         while (wait--) {
1155                 if ((RTL_R32(CounterAddrLow) & CounterDump) == 0) {
1156                         /* copy updated counters */
1157                         memcpy(&tp->counters, counters, sizeof(*counters));
1158                         break;
1159                 }
1160                 udelay(10);
1161         }
1162
1163         RTL_W32(CounterAddrLow, 0);
1164         RTL_W32(CounterAddrHigh, 0);
1165
1166         pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1167 }
1168
1169 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1170                                       struct ethtool_stats *stats, u64 *data)
1171 {
1172         struct rtl8169_private *tp = netdev_priv(dev);
1173
1174         ASSERT_RTNL();
1175
1176         rtl8169_update_counters(dev);
1177
1178         data[0] = le64_to_cpu(tp->counters.tx_packets);
1179         data[1] = le64_to_cpu(tp->counters.rx_packets);
1180         data[2] = le64_to_cpu(tp->counters.tx_errors);
1181         data[3] = le32_to_cpu(tp->counters.rx_errors);
1182         data[4] = le16_to_cpu(tp->counters.rx_missed);
1183         data[5] = le16_to_cpu(tp->counters.align_errors);
1184         data[6] = le32_to_cpu(tp->counters.tx_one_collision);
1185         data[7] = le32_to_cpu(tp->counters.tx_multi_collision);
1186         data[8] = le64_to_cpu(tp->counters.rx_unicast);
1187         data[9] = le64_to_cpu(tp->counters.rx_broadcast);
1188         data[10] = le32_to_cpu(tp->counters.rx_multicast);
1189         data[11] = le16_to_cpu(tp->counters.tx_aborted);
1190         data[12] = le16_to_cpu(tp->counters.tx_underun);
1191 }
1192
1193 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1194 {
1195         switch(stringset) {
1196         case ETH_SS_STATS:
1197                 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1198                 break;
1199         }
1200 }
1201
1202 static const struct ethtool_ops rtl8169_ethtool_ops = {
1203         .get_drvinfo            = rtl8169_get_drvinfo,
1204         .get_regs_len           = rtl8169_get_regs_len,
1205         .get_link               = ethtool_op_get_link,
1206         .get_settings           = rtl8169_get_settings,
1207         .set_settings           = rtl8169_set_settings,
1208         .get_msglevel           = rtl8169_get_msglevel,
1209         .set_msglevel           = rtl8169_set_msglevel,
1210         .get_rx_csum            = rtl8169_get_rx_csum,
1211         .set_rx_csum            = rtl8169_set_rx_csum,
1212         .set_tx_csum            = ethtool_op_set_tx_csum,
1213         .set_sg                 = ethtool_op_set_sg,
1214         .set_tso                = ethtool_op_set_tso,
1215         .get_regs               = rtl8169_get_regs,
1216         .get_wol                = rtl8169_get_wol,
1217         .set_wol                = rtl8169_set_wol,
1218         .get_strings            = rtl8169_get_strings,
1219         .get_sset_count         = rtl8169_get_sset_count,
1220         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
1221 };
1222
1223 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1224                                        int bitnum, int bitval)
1225 {
1226         int val;
1227
1228         val = mdio_read(ioaddr, reg);
1229         val = (bitval == 1) ?
1230                 val | (bitval << bitnum) :  val & ~(0x0001 << bitnum);
1231         mdio_write(ioaddr, reg, val & 0xffff);
1232 }
1233
1234 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1235                                     void __iomem *ioaddr)
1236 {
1237         /*
1238          * The driver currently handles the 8168Bf and the 8168Be identically
1239          * but they can be identified more specifically through the test below
1240          * if needed:
1241          *
1242          * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1243          *
1244          * Same thing for the 8101Eb and the 8101Ec:
1245          *
1246          * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1247          */
1248         const struct {
1249                 u32 mask;
1250                 u32 val;
1251                 int mac_version;
1252         } mac_info[] = {
1253                 /* 8168D family. */
1254                 { 0x7c800000, 0x28000000,       RTL_GIGA_MAC_VER_25 },
1255
1256                 /* 8168C family. */
1257                 { 0x7cf00000, 0x3ca00000,       RTL_GIGA_MAC_VER_24 },
1258                 { 0x7cf00000, 0x3c900000,       RTL_GIGA_MAC_VER_23 },
1259                 { 0x7cf00000, 0x3c800000,       RTL_GIGA_MAC_VER_18 },
1260                 { 0x7c800000, 0x3c800000,       RTL_GIGA_MAC_VER_24 },
1261                 { 0x7cf00000, 0x3c000000,       RTL_GIGA_MAC_VER_19 },
1262                 { 0x7cf00000, 0x3c200000,       RTL_GIGA_MAC_VER_20 },
1263                 { 0x7cf00000, 0x3c300000,       RTL_GIGA_MAC_VER_21 },
1264                 { 0x7cf00000, 0x3c400000,       RTL_GIGA_MAC_VER_22 },
1265                 { 0x7c800000, 0x3c000000,       RTL_GIGA_MAC_VER_22 },
1266
1267                 /* 8168B family. */
1268                 { 0x7cf00000, 0x38000000,       RTL_GIGA_MAC_VER_12 },
1269                 { 0x7cf00000, 0x38500000,       RTL_GIGA_MAC_VER_17 },
1270                 { 0x7c800000, 0x38000000,       RTL_GIGA_MAC_VER_17 },
1271                 { 0x7c800000, 0x30000000,       RTL_GIGA_MAC_VER_11 },
1272
1273                 /* 8101 family. */
1274                 { 0x7cf00000, 0x34a00000,       RTL_GIGA_MAC_VER_09 },
1275                 { 0x7cf00000, 0x24a00000,       RTL_GIGA_MAC_VER_09 },
1276                 { 0x7cf00000, 0x34900000,       RTL_GIGA_MAC_VER_08 },
1277                 { 0x7cf00000, 0x24900000,       RTL_GIGA_MAC_VER_08 },
1278                 { 0x7cf00000, 0x34800000,       RTL_GIGA_MAC_VER_07 },
1279                 { 0x7cf00000, 0x24800000,       RTL_GIGA_MAC_VER_07 },
1280                 { 0x7cf00000, 0x34000000,       RTL_GIGA_MAC_VER_13 },
1281                 { 0x7cf00000, 0x34300000,       RTL_GIGA_MAC_VER_10 },
1282                 { 0x7cf00000, 0x34200000,       RTL_GIGA_MAC_VER_16 },
1283                 { 0x7c800000, 0x34800000,       RTL_GIGA_MAC_VER_09 },
1284                 { 0x7c800000, 0x24800000,       RTL_GIGA_MAC_VER_09 },
1285                 { 0x7c800000, 0x34000000,       RTL_GIGA_MAC_VER_16 },
1286                 /* FIXME: where did these entries come from ? -- FR */
1287                 { 0xfc800000, 0x38800000,       RTL_GIGA_MAC_VER_15 },
1288                 { 0xfc800000, 0x30800000,       RTL_GIGA_MAC_VER_14 },
1289
1290                 /* 8110 family. */
1291                 { 0xfc800000, 0x98000000,       RTL_GIGA_MAC_VER_06 },
1292                 { 0xfc800000, 0x18000000,       RTL_GIGA_MAC_VER_05 },
1293                 { 0xfc800000, 0x10000000,       RTL_GIGA_MAC_VER_04 },
1294                 { 0xfc800000, 0x04000000,       RTL_GIGA_MAC_VER_03 },
1295                 { 0xfc800000, 0x00800000,       RTL_GIGA_MAC_VER_02 },
1296                 { 0xfc800000, 0x00000000,       RTL_GIGA_MAC_VER_01 },
1297
1298                 { 0x00000000, 0x00000000,       RTL_GIGA_MAC_VER_01 }   /* Catch-all */
1299         }, *p = mac_info;
1300         u32 reg;
1301
1302         reg = RTL_R32(TxConfig);
1303         while ((reg & p->mask) != p->val)
1304                 p++;
1305         tp->mac_version = p->mac_version;
1306
1307         if (p->mask == 0x00000000) {
1308                 struct pci_dev *pdev = tp->pci_dev;
1309
1310                 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1311         }
1312 }
1313
1314 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1315 {
1316         dprintk("mac_version = 0x%02x\n", tp->mac_version);
1317 }
1318
1319 struct phy_reg {
1320         u16 reg;
1321         u16 val;
1322 };
1323
1324 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1325 {
1326         while (len-- > 0) {
1327                 mdio_write(ioaddr, regs->reg, regs->val);
1328                 regs++;
1329         }
1330 }
1331
1332 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1333 {
1334         struct {
1335                 u16 regs[5]; /* Beware of bit-sign propagation */
1336         } phy_magic[5] = { {
1337                 { 0x0000,       //w 4 15 12 0
1338                   0x00a1,       //w 3 15 0 00a1
1339                   0x0008,       //w 2 15 0 0008
1340                   0x1020,       //w 1 15 0 1020
1341                   0x1000 } },{  //w 0 15 0 1000
1342                 { 0x7000,       //w 4 15 12 7
1343                   0xff41,       //w 3 15 0 ff41
1344                   0xde60,       //w 2 15 0 de60
1345                   0x0140,       //w 1 15 0 0140
1346                   0x0077 } },{  //w 0 15 0 0077
1347                 { 0xa000,       //w 4 15 12 a
1348                   0xdf01,       //w 3 15 0 df01
1349                   0xdf20,       //w 2 15 0 df20
1350                   0xff95,       //w 1 15 0 ff95
1351                   0xfa00 } },{  //w 0 15 0 fa00
1352                 { 0xb000,       //w 4 15 12 b
1353                   0xff41,       //w 3 15 0 ff41
1354                   0xde20,       //w 2 15 0 de20
1355                   0x0140,       //w 1 15 0 0140
1356                   0x00bb } },{  //w 0 15 0 00bb
1357                 { 0xf000,       //w 4 15 12 f
1358                   0xdf01,       //w 3 15 0 df01
1359                   0xdf20,       //w 2 15 0 df20
1360                   0xff95,       //w 1 15 0 ff95
1361                   0xbf00 }      //w 0 15 0 bf00
1362                 }
1363         }, *p = phy_magic;
1364         unsigned int i;
1365
1366         mdio_write(ioaddr, 0x1f, 0x0001);               //w 31 2 0 1
1367         mdio_write(ioaddr, 0x15, 0x1000);               //w 21 15 0 1000
1368         mdio_write(ioaddr, 0x18, 0x65c7);               //w 24 15 0 65c7
1369         rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0);   //w 4 11 11 0
1370
1371         for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1372                 int val, pos = 4;
1373
1374                 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1375                 mdio_write(ioaddr, pos, val);
1376                 while (--pos >= 0)
1377                         mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1378                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1379                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1380         }
1381         mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1382 }
1383
1384 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1385 {
1386         struct phy_reg phy_reg_init[] = {
1387                 { 0x1f, 0x0002 },
1388                 { 0x01, 0x90d0 },
1389                 { 0x1f, 0x0000 }
1390         };
1391
1392         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1393 }
1394
1395 static void rtl8168bb_hw_phy_config(void __iomem *ioaddr)
1396 {
1397         struct phy_reg phy_reg_init[] = {
1398                 { 0x10, 0xf41b },
1399                 { 0x1f, 0x0000 }
1400         };
1401
1402         mdio_write(ioaddr, 0x1f, 0x0001);
1403         mdio_patch(ioaddr, 0x16, 1 << 0);
1404
1405         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1406 }
1407
1408 static void rtl8168bef_hw_phy_config(void __iomem *ioaddr)
1409 {
1410         struct phy_reg phy_reg_init[] = {
1411                 { 0x1f, 0x0001 },
1412                 { 0x10, 0xf41b },
1413                 { 0x1f, 0x0000 }
1414         };
1415
1416         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1417 }
1418
1419 static void rtl8168cp_1_hw_phy_config(void __iomem *ioaddr)
1420 {
1421         struct phy_reg phy_reg_init[] = {
1422                 { 0x1f, 0x0000 },
1423                 { 0x1d, 0x0f00 },
1424                 { 0x1f, 0x0002 },
1425                 { 0x0c, 0x1ec8 },
1426                 { 0x1f, 0x0000 }
1427         };
1428
1429         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1430 }
1431
1432 static void rtl8168cp_2_hw_phy_config(void __iomem *ioaddr)
1433 {
1434         struct phy_reg phy_reg_init[] = {
1435                 { 0x1f, 0x0001 },
1436                 { 0x1d, 0x3d98 },
1437                 { 0x1f, 0x0000 }
1438         };
1439
1440         mdio_write(ioaddr, 0x1f, 0x0000);
1441         mdio_patch(ioaddr, 0x14, 1 << 5);
1442         mdio_patch(ioaddr, 0x0d, 1 << 5);
1443
1444         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1445 }
1446
1447 static void rtl8168c_1_hw_phy_config(void __iomem *ioaddr)
1448 {
1449         struct phy_reg phy_reg_init[] = {
1450                 { 0x1f, 0x0001 },
1451                 { 0x12, 0x2300 },
1452                 { 0x1f, 0x0002 },
1453                 { 0x00, 0x88d4 },
1454                 { 0x01, 0x82b1 },
1455                 { 0x03, 0x7002 },
1456                 { 0x08, 0x9e30 },
1457                 { 0x09, 0x01f0 },
1458                 { 0x0a, 0x5500 },
1459                 { 0x0c, 0x00c8 },
1460                 { 0x1f, 0x0003 },
1461                 { 0x12, 0xc096 },
1462                 { 0x16, 0x000a },
1463                 { 0x1f, 0x0000 },
1464                 { 0x1f, 0x0000 },
1465                 { 0x09, 0x2000 },
1466                 { 0x09, 0x0000 }
1467         };
1468
1469         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1470
1471         mdio_patch(ioaddr, 0x14, 1 << 5);
1472         mdio_patch(ioaddr, 0x0d, 1 << 5);
1473         mdio_write(ioaddr, 0x1f, 0x0000);
1474 }
1475
1476 static void rtl8168c_2_hw_phy_config(void __iomem *ioaddr)
1477 {
1478         struct phy_reg phy_reg_init[] = {
1479                 { 0x1f, 0x0001 },
1480                 { 0x12, 0x2300 },
1481                 { 0x03, 0x802f },
1482                 { 0x02, 0x4f02 },
1483                 { 0x01, 0x0409 },
1484                 { 0x00, 0xf099 },
1485                 { 0x04, 0x9800 },
1486                 { 0x04, 0x9000 },
1487                 { 0x1d, 0x3d98 },
1488                 { 0x1f, 0x0002 },
1489                 { 0x0c, 0x7eb8 },
1490                 { 0x06, 0x0761 },
1491                 { 0x1f, 0x0003 },
1492                 { 0x16, 0x0f0a },
1493                 { 0x1f, 0x0000 }
1494         };
1495
1496         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1497
1498         mdio_patch(ioaddr, 0x16, 1 << 0);
1499         mdio_patch(ioaddr, 0x14, 1 << 5);
1500         mdio_patch(ioaddr, 0x0d, 1 << 5);
1501         mdio_write(ioaddr, 0x1f, 0x0000);
1502 }
1503
1504 static void rtl8168c_3_hw_phy_config(void __iomem *ioaddr)
1505 {
1506         struct phy_reg phy_reg_init[] = {
1507                 { 0x1f, 0x0001 },
1508                 { 0x12, 0x2300 },
1509                 { 0x1d, 0x3d98 },
1510                 { 0x1f, 0x0002 },
1511                 { 0x0c, 0x7eb8 },
1512                 { 0x06, 0x5461 },
1513                 { 0x1f, 0x0003 },
1514                 { 0x16, 0x0f0a },
1515                 { 0x1f, 0x0000 }
1516         };
1517
1518         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1519
1520         mdio_patch(ioaddr, 0x16, 1 << 0);
1521         mdio_patch(ioaddr, 0x14, 1 << 5);
1522         mdio_patch(ioaddr, 0x0d, 1 << 5);
1523         mdio_write(ioaddr, 0x1f, 0x0000);
1524 }
1525
1526 static void rtl8168c_4_hw_phy_config(void __iomem *ioaddr)
1527 {
1528         rtl8168c_3_hw_phy_config(ioaddr);
1529 }
1530
1531 static void rtl8168d_hw_phy_config(void __iomem *ioaddr)
1532 {
1533         struct phy_reg phy_reg_init_0[] = {
1534                 { 0x1f, 0x0001 },
1535                 { 0x09, 0x2770 },
1536                 { 0x08, 0x04d0 },
1537                 { 0x0b, 0xad15 },
1538                 { 0x0c, 0x5bf0 },
1539                 { 0x1c, 0xf101 },
1540                 { 0x1f, 0x0003 },
1541                 { 0x14, 0x94d7 },
1542                 { 0x12, 0xf4d6 },
1543                 { 0x09, 0xca0f },
1544                 { 0x1f, 0x0002 },
1545                 { 0x0b, 0x0b10 },
1546                 { 0x0c, 0xd1f7 },
1547                 { 0x1f, 0x0002 },
1548                 { 0x06, 0x5461 },
1549                 { 0x1f, 0x0002 },
1550                 { 0x05, 0x6662 },
1551                 { 0x1f, 0x0000 },
1552                 { 0x14, 0x0060 },
1553                 { 0x1f, 0x0000 },
1554                 { 0x0d, 0xf8a0 },
1555                 { 0x1f, 0x0005 },
1556                 { 0x05, 0xffc2 }
1557         };
1558
1559         rtl_phy_write(ioaddr, phy_reg_init_0, ARRAY_SIZE(phy_reg_init_0));
1560
1561         if (mdio_read(ioaddr, 0x06) == 0xc400) {
1562                 struct phy_reg phy_reg_init_1[] = {
1563                         { 0x1f, 0x0005 },
1564                         { 0x01, 0x0300 },
1565                         { 0x1f, 0x0000 },
1566                         { 0x11, 0x401c },
1567                         { 0x16, 0x4100 },
1568                         { 0x1f, 0x0005 },
1569                         { 0x07, 0x0010 },
1570                         { 0x05, 0x83dc },
1571                         { 0x06, 0x087d },
1572                         { 0x05, 0x8300 },
1573                         { 0x06, 0x0101 },
1574                         { 0x06, 0x05f8 },
1575                         { 0x06, 0xf9fa },
1576                         { 0x06, 0xfbef },
1577                         { 0x06, 0x79e2 },
1578                         { 0x06, 0x835f },
1579                         { 0x06, 0xe0f8 },
1580                         { 0x06, 0x9ae1 },
1581                         { 0x06, 0xf89b },
1582                         { 0x06, 0xef31 },
1583                         { 0x06, 0x3b65 },
1584                         { 0x06, 0xaa07 },
1585                         { 0x06, 0x81e4 },
1586                         { 0x06, 0xf89a },
1587                         { 0x06, 0xe5f8 },
1588                         { 0x06, 0x9baf },
1589                         { 0x06, 0x06ae },
1590                         { 0x05, 0x83dc },
1591                         { 0x06, 0x8300 },
1592                 };
1593
1594                 rtl_phy_write(ioaddr, phy_reg_init_1,
1595                               ARRAY_SIZE(phy_reg_init_1));
1596         }
1597
1598         mdio_write(ioaddr, 0x1f, 0x0000);
1599 }
1600
1601 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1602 {
1603         struct phy_reg phy_reg_init[] = {
1604                 { 0x1f, 0x0003 },
1605                 { 0x08, 0x441d },
1606                 { 0x01, 0x9100 },
1607                 { 0x1f, 0x0000 }
1608         };
1609
1610         mdio_write(ioaddr, 0x1f, 0x0000);
1611         mdio_patch(ioaddr, 0x11, 1 << 12);
1612         mdio_patch(ioaddr, 0x19, 1 << 13);
1613
1614         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1615 }
1616
1617 static void rtl_hw_phy_config(struct net_device *dev)
1618 {
1619         struct rtl8169_private *tp = netdev_priv(dev);
1620         void __iomem *ioaddr = tp->mmio_addr;
1621
1622         rtl8169_print_mac_version(tp);
1623
1624         switch (tp->mac_version) {
1625         case RTL_GIGA_MAC_VER_01:
1626                 break;
1627         case RTL_GIGA_MAC_VER_02:
1628         case RTL_GIGA_MAC_VER_03:
1629                 rtl8169s_hw_phy_config(ioaddr);
1630                 break;
1631         case RTL_GIGA_MAC_VER_04:
1632                 rtl8169sb_hw_phy_config(ioaddr);
1633                 break;
1634         case RTL_GIGA_MAC_VER_07:
1635         case RTL_GIGA_MAC_VER_08:
1636         case RTL_GIGA_MAC_VER_09:
1637                 rtl8102e_hw_phy_config(ioaddr);
1638                 break;
1639         case RTL_GIGA_MAC_VER_11:
1640                 rtl8168bb_hw_phy_config(ioaddr);
1641                 break;
1642         case RTL_GIGA_MAC_VER_12:
1643                 rtl8168bef_hw_phy_config(ioaddr);
1644                 break;
1645         case RTL_GIGA_MAC_VER_17:
1646                 rtl8168bef_hw_phy_config(ioaddr);
1647                 break;
1648         case RTL_GIGA_MAC_VER_18:
1649                 rtl8168cp_1_hw_phy_config(ioaddr);
1650                 break;
1651         case RTL_GIGA_MAC_VER_19:
1652                 rtl8168c_1_hw_phy_config(ioaddr);
1653                 break;
1654         case RTL_GIGA_MAC_VER_20:
1655                 rtl8168c_2_hw_phy_config(ioaddr);
1656                 break;
1657         case RTL_GIGA_MAC_VER_21:
1658                 rtl8168c_3_hw_phy_config(ioaddr);
1659                 break;
1660         case RTL_GIGA_MAC_VER_22:
1661                 rtl8168c_4_hw_phy_config(ioaddr);
1662                 break;
1663         case RTL_GIGA_MAC_VER_23:
1664         case RTL_GIGA_MAC_VER_24:
1665                 rtl8168cp_2_hw_phy_config(ioaddr);
1666                 break;
1667         case RTL_GIGA_MAC_VER_25:
1668                 rtl8168d_hw_phy_config(ioaddr);
1669                 break;
1670
1671         default:
1672                 break;
1673         }
1674 }
1675
1676 static void rtl8169_phy_timer(unsigned long __opaque)
1677 {
1678         struct net_device *dev = (struct net_device *)__opaque;
1679         struct rtl8169_private *tp = netdev_priv(dev);
1680         struct timer_list *timer = &tp->timer;
1681         void __iomem *ioaddr = tp->mmio_addr;
1682         unsigned long timeout = RTL8169_PHY_TIMEOUT;
1683
1684         assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1685
1686         if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1687                 return;
1688
1689         spin_lock_irq(&tp->lock);
1690
1691         if (tp->phy_reset_pending(ioaddr)) {
1692                 /*
1693                  * A busy loop could burn quite a few cycles on nowadays CPU.
1694                  * Let's delay the execution of the timer for a few ticks.
1695                  */
1696                 timeout = HZ/10;
1697                 goto out_mod_timer;
1698         }
1699
1700         if (tp->link_ok(ioaddr))
1701                 goto out_unlock;
1702
1703         if (netif_msg_link(tp))
1704                 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1705
1706         tp->phy_reset_enable(ioaddr);
1707
1708 out_mod_timer:
1709         mod_timer(timer, jiffies + timeout);
1710 out_unlock:
1711         spin_unlock_irq(&tp->lock);
1712 }
1713
1714 static inline void rtl8169_delete_timer(struct net_device *dev)
1715 {
1716         struct rtl8169_private *tp = netdev_priv(dev);
1717         struct timer_list *timer = &tp->timer;
1718
1719         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1720                 return;
1721
1722         del_timer_sync(timer);
1723 }
1724
1725 static inline void rtl8169_request_timer(struct net_device *dev)
1726 {
1727         struct rtl8169_private *tp = netdev_priv(dev);
1728         struct timer_list *timer = &tp->timer;
1729
1730         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1731                 return;
1732
1733         mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1734 }
1735
1736 #ifdef CONFIG_NET_POLL_CONTROLLER
1737 /*
1738  * Polling 'interrupt' - used by things like netconsole to send skbs
1739  * without having to re-enable interrupts. It's not called while
1740  * the interrupt routine is executing.
1741  */
1742 static void rtl8169_netpoll(struct net_device *dev)
1743 {
1744         struct rtl8169_private *tp = netdev_priv(dev);
1745         struct pci_dev *pdev = tp->pci_dev;
1746
1747         disable_irq(pdev->irq);
1748         rtl8169_interrupt(pdev->irq, dev);
1749         enable_irq(pdev->irq);
1750 }
1751 #endif
1752
1753 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1754                                   void __iomem *ioaddr)
1755 {
1756         iounmap(ioaddr);
1757         pci_release_regions(pdev);
1758         pci_disable_device(pdev);
1759         free_netdev(dev);
1760 }
1761
1762 static void rtl8169_phy_reset(struct net_device *dev,
1763                               struct rtl8169_private *tp)
1764 {
1765         void __iomem *ioaddr = tp->mmio_addr;
1766         unsigned int i;
1767
1768         tp->phy_reset_enable(ioaddr);
1769         for (i = 0; i < 100; i++) {
1770                 if (!tp->phy_reset_pending(ioaddr))
1771                         return;
1772                 msleep(1);
1773         }
1774         if (netif_msg_link(tp))
1775                 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1776 }
1777
1778 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1779 {
1780         void __iomem *ioaddr = tp->mmio_addr;
1781
1782         rtl_hw_phy_config(dev);
1783
1784         if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1785                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1786                 RTL_W8(0x82, 0x01);
1787         }
1788
1789         pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1790
1791         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1792                 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1793
1794         if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1795                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1796                 RTL_W8(0x82, 0x01);
1797                 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1798                 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1799         }
1800
1801         rtl8169_phy_reset(dev, tp);
1802
1803         /*
1804          * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1805          * only 8101. Don't panic.
1806          */
1807         rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1808
1809         if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1810                 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1811 }
1812
1813 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1814 {
1815         void __iomem *ioaddr = tp->mmio_addr;
1816         u32 high;
1817         u32 low;
1818
1819         low  = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1820         high = addr[4] | (addr[5] << 8);
1821
1822         spin_lock_irq(&tp->lock);
1823
1824         RTL_W8(Cfg9346, Cfg9346_Unlock);
1825         RTL_W32(MAC0, low);
1826         RTL_W32(MAC4, high);
1827         RTL_W8(Cfg9346, Cfg9346_Lock);
1828
1829         spin_unlock_irq(&tp->lock);
1830 }
1831
1832 static int rtl_set_mac_address(struct net_device *dev, void *p)
1833 {
1834         struct rtl8169_private *tp = netdev_priv(dev);
1835         struct sockaddr *addr = p;
1836
1837         if (!is_valid_ether_addr(addr->sa_data))
1838                 return -EADDRNOTAVAIL;
1839
1840         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1841
1842         rtl_rar_set(tp, dev->dev_addr);
1843
1844         return 0;
1845 }
1846
1847 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1848 {
1849         struct rtl8169_private *tp = netdev_priv(dev);
1850         struct mii_ioctl_data *data = if_mii(ifr);
1851
1852         return netif_running(dev) ? tp->do_ioctl(tp, data, cmd) : -ENODEV;
1853 }
1854
1855 static int rtl_xmii_ioctl(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd)
1856 {
1857         switch (cmd) {
1858         case SIOCGMIIPHY:
1859                 data->phy_id = 32; /* Internal PHY */
1860                 return 0;
1861
1862         case SIOCGMIIREG:
1863                 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1864                 return 0;
1865
1866         case SIOCSMIIREG:
1867                 if (!capable(CAP_NET_ADMIN))
1868                         return -EPERM;
1869                 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1870                 return 0;
1871         }
1872         return -EOPNOTSUPP;
1873 }
1874
1875 static int rtl_tbi_ioctl(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd)
1876 {
1877         return -EOPNOTSUPP;
1878 }
1879
1880 static const struct rtl_cfg_info {
1881         void (*hw_start)(struct net_device *);
1882         unsigned int region;
1883         unsigned int align;
1884         u16 intr_event;
1885         u16 napi_event;
1886         unsigned features;
1887 } rtl_cfg_infos [] = {
1888         [RTL_CFG_0] = {
1889                 .hw_start       = rtl_hw_start_8169,
1890                 .region         = 1,
1891                 .align          = 0,
1892                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1893                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1894                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1895                 .features       = RTL_FEATURE_GMII
1896         },
1897         [RTL_CFG_1] = {
1898                 .hw_start       = rtl_hw_start_8168,
1899                 .region         = 2,
1900                 .align          = 8,
1901                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1902                                   TxErr | TxOK | RxOK | RxErr,
1903                 .napi_event     = TxErr | TxOK | RxOK | RxOverflow,
1904                 .features       = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1905         },
1906         [RTL_CFG_2] = {
1907                 .hw_start       = rtl_hw_start_8101,
1908                 .region         = 2,
1909                 .align          = 8,
1910                 .intr_event     = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1911                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1912                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1913                 .features       = RTL_FEATURE_MSI
1914         }
1915 };
1916
1917 /* Cfg9346_Unlock assumed. */
1918 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1919                             const struct rtl_cfg_info *cfg)
1920 {
1921         unsigned msi = 0;
1922         u8 cfg2;
1923
1924         cfg2 = RTL_R8(Config2) & ~MSIEnable;
1925         if (cfg->features & RTL_FEATURE_MSI) {
1926                 if (pci_enable_msi(pdev)) {
1927                         dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1928                 } else {
1929                         cfg2 |= MSIEnable;
1930                         msi = RTL_FEATURE_MSI;
1931                 }
1932         }
1933         RTL_W8(Config2, cfg2);
1934         return msi;
1935 }
1936
1937 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1938 {
1939         if (tp->features & RTL_FEATURE_MSI) {
1940                 pci_disable_msi(pdev);
1941                 tp->features &= ~RTL_FEATURE_MSI;
1942         }
1943 }
1944
1945 static const struct net_device_ops rtl8169_netdev_ops = {
1946         .ndo_open               = rtl8169_open,
1947         .ndo_stop               = rtl8169_close,
1948         .ndo_get_stats          = rtl8169_get_stats,
1949         .ndo_start_xmit         = rtl8169_start_xmit,
1950         .ndo_tx_timeout         = rtl8169_tx_timeout,
1951         .ndo_validate_addr      = eth_validate_addr,
1952         .ndo_change_mtu         = rtl8169_change_mtu,
1953         .ndo_set_mac_address    = rtl_set_mac_address,
1954         .ndo_do_ioctl           = rtl8169_ioctl,
1955         .ndo_set_multicast_list = rtl_set_rx_mode,
1956 #ifdef CONFIG_R8169_VLAN
1957         .ndo_vlan_rx_register   = rtl8169_vlan_rx_register,
1958 #endif
1959 #ifdef CONFIG_NET_POLL_CONTROLLER
1960         .ndo_poll_controller    = rtl8169_netpoll,
1961 #endif
1962
1963 };
1964
1965 static int __devinit
1966 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1967 {
1968         const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1969         const unsigned int region = cfg->region;
1970         struct rtl8169_private *tp;
1971         struct mii_if_info *mii;
1972         struct net_device *dev;
1973         void __iomem *ioaddr;
1974         unsigned int i;
1975         int rc;
1976
1977         if (netif_msg_drv(&debug)) {
1978                 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1979                        MODULENAME, RTL8169_VERSION);
1980         }
1981
1982         dev = alloc_etherdev(sizeof (*tp));
1983         if (!dev) {
1984                 if (netif_msg_drv(&debug))
1985                         dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1986                 rc = -ENOMEM;
1987                 goto out;
1988         }
1989
1990         SET_NETDEV_DEV(dev, &pdev->dev);
1991         dev->netdev_ops = &rtl8169_netdev_ops;
1992         tp = netdev_priv(dev);
1993         tp->dev = dev;
1994         tp->pci_dev = pdev;
1995         tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1996
1997         mii = &tp->mii;
1998         mii->dev = dev;
1999         mii->mdio_read = rtl_mdio_read;
2000         mii->mdio_write = rtl_mdio_write;
2001         mii->phy_id_mask = 0x1f;
2002         mii->reg_num_mask = 0x1f;
2003         mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
2004
2005         /* enable device (incl. PCI PM wakeup and hotplug setup) */
2006         rc = pci_enable_device(pdev);
2007         if (rc < 0) {
2008                 if (netif_msg_probe(tp))
2009                         dev_err(&pdev->dev, "enable failure\n");
2010                 goto err_out_free_dev_1;
2011         }
2012
2013         rc = pci_set_mwi(pdev);
2014         if (rc < 0)
2015                 goto err_out_disable_2;
2016
2017         /* make sure PCI base addr 1 is MMIO */
2018         if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
2019                 if (netif_msg_probe(tp)) {
2020                         dev_err(&pdev->dev,
2021                                 "region #%d not an MMIO resource, aborting\n",
2022                                 region);
2023                 }
2024                 rc = -ENODEV;
2025                 goto err_out_mwi_3;
2026         }
2027
2028         /* check for weird/broken PCI region reporting */
2029         if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
2030                 if (netif_msg_probe(tp)) {
2031                         dev_err(&pdev->dev,
2032                                 "Invalid PCI region size(s), aborting\n");
2033                 }
2034                 rc = -ENODEV;
2035                 goto err_out_mwi_3;
2036         }
2037
2038         rc = pci_request_regions(pdev, MODULENAME);
2039         if (rc < 0) {
2040                 if (netif_msg_probe(tp))
2041                         dev_err(&pdev->dev, "could not request regions.\n");
2042                 goto err_out_mwi_3;
2043         }
2044
2045         tp->cp_cmd = PCIMulRW | RxChkSum;
2046
2047         if ((sizeof(dma_addr_t) > 4) &&
2048             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && use_dac) {
2049                 tp->cp_cmd |= PCIDAC;
2050                 dev->features |= NETIF_F_HIGHDMA;
2051         } else {
2052                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2053                 if (rc < 0) {
2054                         if (netif_msg_probe(tp)) {
2055                                 dev_err(&pdev->dev,
2056                                         "DMA configuration failed.\n");
2057                         }
2058                         goto err_out_free_res_4;
2059                 }
2060         }
2061
2062         pci_set_master(pdev);
2063
2064         /* ioremap MMIO region */
2065         ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
2066         if (!ioaddr) {
2067                 if (netif_msg_probe(tp))
2068                         dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
2069                 rc = -EIO;
2070                 goto err_out_free_res_4;
2071         }
2072
2073         tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2074         if (!tp->pcie_cap && netif_msg_probe(tp))
2075                 dev_info(&pdev->dev, "no PCI Express capability\n");
2076
2077         RTL_W16(IntrMask, 0x0000);
2078
2079         /* Soft reset the chip. */
2080         RTL_W8(ChipCmd, CmdReset);
2081
2082         /* Check that the chip has finished the reset. */
2083         for (i = 0; i < 100; i++) {
2084                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2085                         break;
2086                 msleep_interruptible(1);
2087         }
2088
2089         RTL_W16(IntrStatus, 0xffff);
2090
2091         /* Identify chip attached to board */
2092         rtl8169_get_mac_version(tp, ioaddr);
2093
2094         rtl8169_print_mac_version(tp);
2095
2096         for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
2097                 if (tp->mac_version == rtl_chip_info[i].mac_version)
2098                         break;
2099         }
2100         if (i == ARRAY_SIZE(rtl_chip_info)) {
2101                 /* Unknown chip: assume array element #0, original RTL-8169 */
2102                 if (netif_msg_probe(tp)) {
2103                         dev_printk(KERN_DEBUG, &pdev->dev,
2104                                 "unknown chip version, assuming %s\n",
2105                                 rtl_chip_info[0].name);
2106                 }
2107                 i = 0;
2108         }
2109         tp->chipset = i;
2110
2111         RTL_W8(Cfg9346, Cfg9346_Unlock);
2112         RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
2113         RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
2114         if ((RTL_R8(Config3) & (LinkUp | MagicPacket)) != 0)
2115                 tp->features |= RTL_FEATURE_WOL;
2116         if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0)
2117                 tp->features |= RTL_FEATURE_WOL;
2118         tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
2119         RTL_W8(Cfg9346, Cfg9346_Lock);
2120
2121         if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
2122             (RTL_R8(PHYstatus) & TBI_Enable)) {
2123                 tp->set_speed = rtl8169_set_speed_tbi;
2124                 tp->get_settings = rtl8169_gset_tbi;
2125                 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
2126                 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
2127                 tp->link_ok = rtl8169_tbi_link_ok;
2128                 tp->do_ioctl = rtl_tbi_ioctl;
2129
2130                 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
2131         } else {
2132                 tp->set_speed = rtl8169_set_speed_xmii;
2133                 tp->get_settings = rtl8169_gset_xmii;
2134                 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
2135                 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
2136                 tp->link_ok = rtl8169_xmii_link_ok;
2137                 tp->do_ioctl = rtl_xmii_ioctl;
2138         }
2139
2140         spin_lock_init(&tp->lock);
2141
2142         tp->mmio_addr = ioaddr;
2143
2144         /* Get MAC address */
2145         for (i = 0; i < MAC_ADDR_LEN; i++)
2146                 dev->dev_addr[i] = RTL_R8(MAC0 + i);
2147         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2148
2149         SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
2150         dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
2151         dev->irq = pdev->irq;
2152         dev->base_addr = (unsigned long) ioaddr;
2153
2154         netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
2155
2156 #ifdef CONFIG_R8169_VLAN
2157         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2158 #endif
2159
2160         tp->intr_mask = 0xffff;
2161         tp->align = cfg->align;
2162         tp->hw_start = cfg->hw_start;
2163         tp->intr_event = cfg->intr_event;
2164         tp->napi_event = cfg->napi_event;
2165
2166         init_timer(&tp->timer);
2167         tp->timer.data = (unsigned long) dev;
2168         tp->timer.function = rtl8169_phy_timer;
2169
2170         rc = register_netdev(dev);
2171         if (rc < 0)
2172                 goto err_out_msi_5;
2173
2174         pci_set_drvdata(pdev, dev);
2175
2176         if (netif_msg_probe(tp)) {
2177                 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
2178
2179                 printk(KERN_INFO "%s: %s at 0x%lx, "
2180                        "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
2181                        "XID %08x IRQ %d\n",
2182                        dev->name,
2183                        rtl_chip_info[tp->chipset].name,
2184                        dev->base_addr,
2185                        dev->dev_addr[0], dev->dev_addr[1],
2186                        dev->dev_addr[2], dev->dev_addr[3],
2187                        dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
2188         }
2189
2190         rtl8169_init_phy(dev, tp);
2191         device_set_wakeup_enable(&pdev->dev, tp->features & RTL_FEATURE_WOL);
2192
2193 out:
2194         return rc;
2195
2196 err_out_msi_5:
2197         rtl_disable_msi(pdev, tp);
2198         iounmap(ioaddr);
2199 err_out_free_res_4:
2200         pci_release_regions(pdev);
2201 err_out_mwi_3:
2202         pci_clear_mwi(pdev);
2203 err_out_disable_2:
2204         pci_disable_device(pdev);
2205 err_out_free_dev_1:
2206         free_netdev(dev);
2207         goto out;
2208 }
2209
2210 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
2211 {
2212         struct net_device *dev = pci_get_drvdata(pdev);
2213         struct rtl8169_private *tp = netdev_priv(dev);
2214
2215         flush_scheduled_work();
2216
2217         unregister_netdev(dev);
2218         rtl_disable_msi(pdev, tp);
2219         rtl8169_release_board(pdev, dev, tp->mmio_addr);
2220         pci_set_drvdata(pdev, NULL);
2221 }
2222
2223 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
2224                                   struct net_device *dev)
2225 {
2226         unsigned int mtu = dev->mtu;
2227
2228         tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
2229 }
2230
2231 static int rtl8169_open(struct net_device *dev)
2232 {
2233         struct rtl8169_private *tp = netdev_priv(dev);
2234         struct pci_dev *pdev = tp->pci_dev;
2235         int retval = -ENOMEM;
2236
2237
2238         rtl8169_set_rxbufsize(tp, dev);
2239
2240         /*
2241          * Rx and Tx desscriptors needs 256 bytes alignment.
2242          * pci_alloc_consistent provides more.
2243          */
2244         tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
2245                                                &tp->TxPhyAddr);
2246         if (!tp->TxDescArray)
2247                 goto out;
2248
2249         tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2250                                                &tp->RxPhyAddr);
2251         if (!tp->RxDescArray)
2252                 goto err_free_tx_0;
2253
2254         retval = rtl8169_init_ring(dev);
2255         if (retval < 0)
2256                 goto err_free_rx_1;
2257
2258         INIT_DELAYED_WORK(&tp->task, NULL);
2259
2260         smp_mb();
2261
2262         retval = request_irq(dev->irq, rtl8169_interrupt,
2263                              (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2264                              dev->name, dev);
2265         if (retval < 0)
2266                 goto err_release_ring_2;
2267
2268         napi_enable(&tp->napi);
2269
2270         rtl_hw_start(dev);
2271
2272         rtl8169_request_timer(dev);
2273
2274         rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2275 out:
2276         return retval;
2277
2278 err_release_ring_2:
2279         rtl8169_rx_clear(tp);
2280 err_free_rx_1:
2281         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2282                             tp->RxPhyAddr);
2283 err_free_tx_0:
2284         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2285                             tp->TxPhyAddr);
2286         goto out;
2287 }
2288
2289 static void rtl8169_hw_reset(void __iomem *ioaddr)
2290 {
2291         /* Disable interrupts */
2292         rtl8169_irq_mask_and_ack(ioaddr);
2293
2294         /* Reset the chipset */
2295         RTL_W8(ChipCmd, CmdReset);
2296
2297         /* PCI commit */
2298         RTL_R8(ChipCmd);
2299 }
2300
2301 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2302 {
2303         void __iomem *ioaddr = tp->mmio_addr;
2304         u32 cfg = rtl8169_rx_config;
2305
2306         cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2307         RTL_W32(RxConfig, cfg);
2308
2309         /* Set DMA burst size and Interframe Gap Time */
2310         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2311                 (InterFrameGap << TxInterFrameGapShift));
2312 }
2313
2314 static void rtl_hw_start(struct net_device *dev)
2315 {
2316         struct rtl8169_private *tp = netdev_priv(dev);
2317         void __iomem *ioaddr = tp->mmio_addr;
2318         unsigned int i;
2319
2320         /* Soft reset the chip. */
2321         RTL_W8(ChipCmd, CmdReset);
2322
2323         /* Check that the chip has finished the reset. */
2324         for (i = 0; i < 100; i++) {
2325                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2326                         break;
2327                 msleep_interruptible(1);
2328         }
2329
2330         tp->hw_start(dev);
2331
2332         netif_start_queue(dev);
2333 }
2334
2335
2336 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2337                                          void __iomem *ioaddr)
2338 {
2339         /*
2340          * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2341          * register to be written before TxDescAddrLow to work.
2342          * Switching from MMIO to I/O access fixes the issue as well.
2343          */
2344         RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2345         RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_BIT_MASK(32));
2346         RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2347         RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_BIT_MASK(32));
2348 }
2349
2350 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2351 {
2352         u16 cmd;
2353
2354         cmd = RTL_R16(CPlusCmd);
2355         RTL_W16(CPlusCmd, cmd);
2356         return cmd;
2357 }
2358
2359 static void rtl_set_rx_max_size(void __iomem *ioaddr, unsigned int rx_buf_sz)
2360 {
2361         /* Low hurts. Let's disable the filtering. */
2362         RTL_W16(RxMaxSize, rx_buf_sz);
2363 }
2364
2365 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2366 {
2367         struct {
2368                 u32 mac_version;
2369                 u32 clk;
2370                 u32 val;
2371         } cfg2_info [] = {
2372                 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2373                 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2374                 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2375                 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2376         }, *p = cfg2_info;
2377         unsigned int i;
2378         u32 clk;
2379
2380         clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2381         for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2382                 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2383                         RTL_W32(0x7c, p->val);
2384                         break;
2385                 }
2386         }
2387 }
2388
2389 static void rtl_hw_start_8169(struct net_device *dev)
2390 {
2391         struct rtl8169_private *tp = netdev_priv(dev);
2392         void __iomem *ioaddr = tp->mmio_addr;
2393         struct pci_dev *pdev = tp->pci_dev;
2394
2395         if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2396                 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2397                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2398         }
2399
2400         RTL_W8(Cfg9346, Cfg9346_Unlock);
2401         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2402             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2403             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2404             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2405                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2406
2407         RTL_W8(EarlyTxThres, EarlyTxThld);
2408
2409         rtl_set_rx_max_size(ioaddr, tp->rx_buf_sz);
2410
2411         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2412             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2413             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2414             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2415                 rtl_set_rx_tx_config_registers(tp);
2416
2417         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2418
2419         if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2420             (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2421                 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2422                         "Bit-3 and bit-14 MUST be 1\n");
2423                 tp->cp_cmd |= (1 << 14);
2424         }
2425
2426         RTL_W16(CPlusCmd, tp->cp_cmd);
2427
2428         rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2429
2430         /*
2431          * Undocumented corner. Supposedly:
2432          * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2433          */
2434         RTL_W16(IntrMitigate, 0x0000);
2435
2436         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2437
2438         if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2439             (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2440             (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2441             (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2442                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2443                 rtl_set_rx_tx_config_registers(tp);
2444         }
2445
2446         RTL_W8(Cfg9346, Cfg9346_Lock);
2447
2448         /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2449         RTL_R8(IntrMask);
2450
2451         RTL_W32(RxMissed, 0);
2452
2453         rtl_set_rx_mode(dev);
2454
2455         /* no early-rx interrupts */
2456         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2457
2458         /* Enable all known interrupts by setting the interrupt mask. */
2459         RTL_W16(IntrMask, tp->intr_event);
2460 }
2461
2462 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2463 {
2464         struct net_device *dev = pci_get_drvdata(pdev);
2465         struct rtl8169_private *tp = netdev_priv(dev);
2466         int cap = tp->pcie_cap;
2467
2468         if (cap) {
2469                 u16 ctl;
2470
2471                 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2472                 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2473                 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2474         }
2475 }
2476
2477 static void rtl_csi_access_enable(void __iomem *ioaddr)
2478 {
2479         u32 csi;
2480
2481         csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2482         rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2483 }
2484
2485 struct ephy_info {
2486         unsigned int offset;
2487         u16 mask;
2488         u16 bits;
2489 };
2490
2491 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2492 {
2493         u16 w;
2494
2495         while (len-- > 0) {
2496                 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2497                 rtl_ephy_write(ioaddr, e->offset, w);
2498                 e++;
2499         }
2500 }
2501
2502 static void rtl_disable_clock_request(struct pci_dev *pdev)
2503 {
2504         struct net_device *dev = pci_get_drvdata(pdev);
2505         struct rtl8169_private *tp = netdev_priv(dev);
2506         int cap = tp->pcie_cap;
2507
2508         if (cap) {
2509                 u16 ctl;
2510
2511                 pci_read_config_word(pdev, cap + PCI_EXP_LNKCTL, &ctl);
2512                 ctl &= ~PCI_EXP_LNKCTL_CLKREQ_EN;
2513                 pci_write_config_word(pdev, cap + PCI_EXP_LNKCTL, ctl);
2514         }
2515 }
2516
2517 #define R8168_CPCMD_QUIRK_MASK (\
2518         EnableBist | \
2519         Mac_dbgo_oe | \
2520         Force_half_dup | \
2521         Force_rxflow_en | \
2522         Force_txflow_en | \
2523         Cxpl_dbg_sel | \
2524         ASF | \
2525         PktCntrDisable | \
2526         Mac_dbgo_sel)
2527
2528 static void rtl_hw_start_8168bb(void __iomem *ioaddr, struct pci_dev *pdev)
2529 {
2530         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2531
2532         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2533
2534         rtl_tx_performance_tweak(pdev,
2535                 (0x5 << MAX_READ_REQUEST_SHIFT) | PCI_EXP_DEVCTL_NOSNOOP_EN);
2536 }
2537
2538 static void rtl_hw_start_8168bef(void __iomem *ioaddr, struct pci_dev *pdev)
2539 {
2540         rtl_hw_start_8168bb(ioaddr, pdev);
2541
2542         RTL_W8(EarlyTxThres, EarlyTxThld);
2543
2544         RTL_W8(Config4, RTL_R8(Config4) & ~(1 << 0));
2545 }
2546
2547 static void __rtl_hw_start_8168cp(void __iomem *ioaddr, struct pci_dev *pdev)
2548 {
2549         RTL_W8(Config1, RTL_R8(Config1) | Speed_down);
2550
2551         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2552
2553         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2554
2555         rtl_disable_clock_request(pdev);
2556
2557         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2558 }
2559
2560 static void rtl_hw_start_8168cp_1(void __iomem *ioaddr, struct pci_dev *pdev)
2561 {
2562         static struct ephy_info e_info_8168cp[] = {
2563                 { 0x01, 0,      0x0001 },
2564                 { 0x02, 0x0800, 0x1000 },
2565                 { 0x03, 0,      0x0042 },
2566                 { 0x06, 0x0080, 0x0000 },
2567                 { 0x07, 0,      0x2000 }
2568         };
2569
2570         rtl_csi_access_enable(ioaddr);
2571
2572         rtl_ephy_init(ioaddr, e_info_8168cp, ARRAY_SIZE(e_info_8168cp));
2573
2574         __rtl_hw_start_8168cp(ioaddr, pdev);
2575 }
2576
2577 static void rtl_hw_start_8168cp_2(void __iomem *ioaddr, struct pci_dev *pdev)
2578 {
2579         rtl_csi_access_enable(ioaddr);
2580
2581         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2582
2583         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2584
2585         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2586 }
2587
2588 static void rtl_hw_start_8168cp_3(void __iomem *ioaddr, struct pci_dev *pdev)
2589 {
2590         rtl_csi_access_enable(ioaddr);
2591
2592         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2593
2594         /* Magic. */
2595         RTL_W8(DBG_REG, 0x20);
2596
2597         RTL_W8(EarlyTxThres, EarlyTxThld);
2598
2599         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2600
2601         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2602 }
2603
2604 static void rtl_hw_start_8168c_1(void __iomem *ioaddr, struct pci_dev *pdev)
2605 {
2606         static struct ephy_info e_info_8168c_1[] = {
2607                 { 0x02, 0x0800, 0x1000 },
2608                 { 0x03, 0,      0x0002 },
2609                 { 0x06, 0x0080, 0x0000 }
2610         };
2611
2612         rtl_csi_access_enable(ioaddr);
2613
2614         RTL_W8(DBG_REG, 0x06 | FIX_NAK_1 | FIX_NAK_2);
2615
2616         rtl_ephy_init(ioaddr, e_info_8168c_1, ARRAY_SIZE(e_info_8168c_1));
2617
2618         __rtl_hw_start_8168cp(ioaddr, pdev);
2619 }
2620
2621 static void rtl_hw_start_8168c_2(void __iomem *ioaddr, struct pci_dev *pdev)
2622 {
2623         static struct ephy_info e_info_8168c_2[] = {
2624                 { 0x01, 0,      0x0001 },
2625                 { 0x03, 0x0400, 0x0220 }
2626         };
2627
2628         rtl_csi_access_enable(ioaddr);
2629
2630         rtl_ephy_init(ioaddr, e_info_8168c_2, ARRAY_SIZE(e_info_8168c_2));
2631
2632         __rtl_hw_start_8168cp(ioaddr, pdev);
2633 }
2634
2635 static void rtl_hw_start_8168c_3(void __iomem *ioaddr, struct pci_dev *pdev)
2636 {
2637         rtl_hw_start_8168c_2(ioaddr, pdev);
2638 }
2639
2640 static void rtl_hw_start_8168c_4(void __iomem *ioaddr, struct pci_dev *pdev)
2641 {
2642         rtl_csi_access_enable(ioaddr);
2643
2644         __rtl_hw_start_8168cp(ioaddr, pdev);
2645 }
2646
2647 static void rtl_hw_start_8168d(void __iomem *ioaddr, struct pci_dev *pdev)
2648 {
2649         rtl_csi_access_enable(ioaddr);
2650
2651         rtl_disable_clock_request(pdev);
2652
2653         RTL_W8(EarlyTxThres, EarlyTxThld);
2654
2655         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2656
2657         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2658 }
2659
2660 static void rtl_hw_start_8168(struct net_device *dev)
2661 {
2662         struct rtl8169_private *tp = netdev_priv(dev);
2663         void __iomem *ioaddr = tp->mmio_addr;
2664         struct pci_dev *pdev = tp->pci_dev;
2665
2666         RTL_W8(Cfg9346, Cfg9346_Unlock);
2667
2668         RTL_W8(EarlyTxThres, EarlyTxThld);
2669
2670         rtl_set_rx_max_size(ioaddr, tp->rx_buf_sz);
2671
2672         tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2673
2674         RTL_W16(CPlusCmd, tp->cp_cmd);
2675
2676         RTL_W16(IntrMitigate, 0x5151);
2677
2678         /* Work around for RxFIFO overflow. */
2679         if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2680                 tp->intr_event |= RxFIFOOver | PCSTimeout;
2681                 tp->intr_event &= ~RxOverflow;
2682         }
2683
2684         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2685
2686         rtl_set_rx_mode(dev);
2687
2688         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2689                 (InterFrameGap << TxInterFrameGapShift));
2690
2691         RTL_R8(IntrMask);
2692
2693         switch (tp->mac_version) {
2694         case RTL_GIGA_MAC_VER_11:
2695                 rtl_hw_start_8168bb(ioaddr, pdev);
2696         break;
2697
2698         case RTL_GIGA_MAC_VER_12:
2699         case RTL_GIGA_MAC_VER_17:
2700                 rtl_hw_start_8168bef(ioaddr, pdev);
2701         break;
2702
2703         case RTL_GIGA_MAC_VER_18:
2704                 rtl_hw_start_8168cp_1(ioaddr, pdev);
2705         break;
2706
2707         case RTL_GIGA_MAC_VER_19:
2708                 rtl_hw_start_8168c_1(ioaddr, pdev);
2709         break;
2710
2711         case RTL_GIGA_MAC_VER_20:
2712                 rtl_hw_start_8168c_2(ioaddr, pdev);
2713         break;
2714
2715         case RTL_GIGA_MAC_VER_21:
2716                 rtl_hw_start_8168c_3(ioaddr, pdev);
2717         break;
2718
2719         case RTL_GIGA_MAC_VER_22:
2720                 rtl_hw_start_8168c_4(ioaddr, pdev);
2721         break;
2722
2723         case RTL_GIGA_MAC_VER_23:
2724                 rtl_hw_start_8168cp_2(ioaddr, pdev);
2725         break;
2726
2727         case RTL_GIGA_MAC_VER_24:
2728                 rtl_hw_start_8168cp_3(ioaddr, pdev);
2729         break;
2730
2731         case RTL_GIGA_MAC_VER_25:
2732                 rtl_hw_start_8168d(ioaddr, pdev);
2733         break;
2734
2735         default:
2736                 printk(KERN_ERR PFX "%s: unknown chipset (mac_version = %d).\n",
2737                         dev->name, tp->mac_version);
2738         break;
2739         }
2740
2741         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2742
2743         RTL_W8(Cfg9346, Cfg9346_Lock);
2744
2745         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2746
2747         RTL_W16(IntrMask, tp->intr_event);
2748 }
2749
2750 #define R810X_CPCMD_QUIRK_MASK (\
2751         EnableBist | \
2752         Mac_dbgo_oe | \
2753         Force_half_dup | \
2754         Force_half_dup | \
2755         Force_txflow_en | \
2756         Cxpl_dbg_sel | \
2757         ASF | \
2758         PktCntrDisable | \
2759         PCIDAC | \
2760         PCIMulRW)
2761
2762 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2763 {
2764         static struct ephy_info e_info_8102e_1[] = {
2765                 { 0x01, 0, 0x6e65 },
2766                 { 0x02, 0, 0x091f },
2767                 { 0x03, 0, 0xc2f9 },
2768                 { 0x06, 0, 0xafb5 },
2769                 { 0x07, 0, 0x0e00 },
2770                 { 0x19, 0, 0xec80 },
2771                 { 0x01, 0, 0x2e65 },
2772                 { 0x01, 0, 0x6e65 }
2773         };
2774         u8 cfg1;
2775
2776         rtl_csi_access_enable(ioaddr);
2777
2778         RTL_W8(DBG_REG, FIX_NAK_1);
2779
2780         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2781
2782         RTL_W8(Config1,
2783                LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2784         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2785
2786         cfg1 = RTL_R8(Config1);
2787         if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2788                 RTL_W8(Config1, cfg1 & ~LEDS0);
2789
2790         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2791
2792         rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2793 }
2794
2795 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2796 {
2797         rtl_csi_access_enable(ioaddr);
2798
2799         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2800
2801         RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2802         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2803
2804         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2805 }
2806
2807 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2808 {
2809         rtl_hw_start_8102e_2(ioaddr, pdev);
2810
2811         rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2812 }
2813
2814 static void rtl_hw_start_8101(struct net_device *dev)
2815 {
2816         struct rtl8169_private *tp = netdev_priv(dev);
2817         void __iomem *ioaddr = tp->mmio_addr;
2818         struct pci_dev *pdev = tp->pci_dev;
2819
2820         if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2821             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2822                 int cap = tp->pcie_cap;
2823
2824                 if (cap) {
2825                         pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2826                                               PCI_EXP_DEVCTL_NOSNOOP_EN);
2827                 }
2828         }
2829
2830         switch (tp->mac_version) {
2831         case RTL_GIGA_MAC_VER_07:
2832                 rtl_hw_start_8102e_1(ioaddr, pdev);
2833                 break;
2834
2835         case RTL_GIGA_MAC_VER_08:
2836                 rtl_hw_start_8102e_3(ioaddr, pdev);
2837                 break;
2838
2839         case RTL_GIGA_MAC_VER_09:
2840                 rtl_hw_start_8102e_2(ioaddr, pdev);
2841                 break;
2842         }
2843
2844         RTL_W8(Cfg9346, Cfg9346_Unlock);
2845
2846         RTL_W8(EarlyTxThres, EarlyTxThld);
2847
2848         rtl_set_rx_max_size(ioaddr, tp->rx_buf_sz);
2849
2850         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2851
2852         RTL_W16(CPlusCmd, tp->cp_cmd);
2853
2854         RTL_W16(IntrMitigate, 0x0000);
2855
2856         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2857
2858         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2859         rtl_set_rx_tx_config_registers(tp);
2860
2861         RTL_W8(Cfg9346, Cfg9346_Lock);
2862
2863         RTL_R8(IntrMask);
2864
2865         rtl_set_rx_mode(dev);
2866
2867         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2868
2869         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2870
2871         RTL_W16(IntrMask, tp->intr_event);
2872 }
2873
2874 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2875 {
2876         struct rtl8169_private *tp = netdev_priv(dev);
2877         int ret = 0;
2878
2879         if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2880                 return -EINVAL;
2881
2882         dev->mtu = new_mtu;
2883
2884         if (!netif_running(dev))
2885                 goto out;
2886
2887         rtl8169_down(dev);
2888
2889         rtl8169_set_rxbufsize(tp, dev);
2890
2891         ret = rtl8169_init_ring(dev);
2892         if (ret < 0)
2893                 goto out;
2894
2895         napi_enable(&tp->napi);
2896
2897         rtl_hw_start(dev);
2898
2899         rtl8169_request_timer(dev);
2900
2901 out:
2902         return ret;
2903 }
2904
2905 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2906 {
2907         desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2908         desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2909 }
2910
2911 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2912                                 struct sk_buff **sk_buff, struct RxDesc *desc)
2913 {
2914         struct pci_dev *pdev = tp->pci_dev;
2915
2916         pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2917                          PCI_DMA_FROMDEVICE);
2918         dev_kfree_skb(*sk_buff);
2919         *sk_buff = NULL;
2920         rtl8169_make_unusable_by_asic(desc);
2921 }
2922
2923 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2924 {
2925         u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2926
2927         desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2928 }
2929
2930 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2931                                        u32 rx_buf_sz)
2932 {
2933         desc->addr = cpu_to_le64(mapping);
2934         wmb();
2935         rtl8169_mark_to_asic(desc, rx_buf_sz);
2936 }
2937
2938 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2939                                             struct net_device *dev,
2940                                             struct RxDesc *desc, int rx_buf_sz,
2941                                             unsigned int align)
2942 {
2943         struct sk_buff *skb;
2944         dma_addr_t mapping;
2945         unsigned int pad;
2946
2947         pad = align ? align : NET_IP_ALIGN;
2948
2949         skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2950         if (!skb)
2951                 goto err_out;
2952
2953         skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2954
2955         mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2956                                  PCI_DMA_FROMDEVICE);
2957
2958         rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2959 out:
2960         return skb;
2961
2962 err_out:
2963         rtl8169_make_unusable_by_asic(desc);
2964         goto out;
2965 }
2966
2967 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2968 {
2969         unsigned int i;
2970
2971         for (i = 0; i < NUM_RX_DESC; i++) {
2972                 if (tp->Rx_skbuff[i]) {
2973                         rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2974                                             tp->RxDescArray + i);
2975                 }
2976         }
2977 }
2978
2979 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2980                            u32 start, u32 end)
2981 {
2982         u32 cur;
2983
2984         for (cur = start; end - cur != 0; cur++) {
2985                 struct sk_buff *skb;
2986                 unsigned int i = cur % NUM_RX_DESC;
2987
2988                 WARN_ON((s32)(end - cur) < 0);
2989
2990                 if (tp->Rx_skbuff[i])
2991                         continue;
2992
2993                 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2994                                            tp->RxDescArray + i,
2995                                            tp->rx_buf_sz, tp->align);
2996                 if (!skb)
2997                         break;
2998
2999                 tp->Rx_skbuff[i] = skb;
3000         }
3001         return cur - start;
3002 }
3003
3004 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
3005 {
3006         desc->opts1 |= cpu_to_le32(RingEnd);
3007 }
3008
3009 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
3010 {
3011         tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
3012 }
3013
3014 static int rtl8169_init_ring(struct net_device *dev)
3015 {
3016         struct rtl8169_private *tp = netdev_priv(dev);
3017
3018         rtl8169_init_ring_indexes(tp);
3019
3020         memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
3021         memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
3022
3023         if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
3024                 goto err_out;
3025
3026         rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
3027
3028         return 0;
3029
3030 err_out:
3031         rtl8169_rx_clear(tp);
3032         return -ENOMEM;
3033 }
3034
3035 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
3036                                  struct TxDesc *desc)
3037 {
3038         unsigned int len = tx_skb->len;
3039
3040         pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
3041         desc->opts1 = 0x00;
3042         desc->opts2 = 0x00;
3043         desc->addr = 0x00;
3044         tx_skb->len = 0;
3045 }
3046
3047 static void rtl8169_tx_clear(struct rtl8169_private *tp)
3048 {
3049         unsigned int i;
3050
3051         for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
3052                 unsigned int entry = i % NUM_TX_DESC;
3053                 struct ring_info *tx_skb = tp->tx_skb + entry;
3054                 unsigned int len = tx_skb->len;
3055
3056                 if (len) {
3057                         struct sk_buff *skb = tx_skb->skb;
3058
3059                         rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
3060                                              tp->TxDescArray + entry);
3061                         if (skb) {
3062                                 dev_kfree_skb(skb);
3063                                 tx_skb->skb = NULL;
3064                         }
3065                         tp->dev->stats.tx_dropped++;
3066                 }
3067         }
3068         tp->cur_tx = tp->dirty_tx = 0;
3069 }
3070
3071 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
3072 {
3073         struct rtl8169_private *tp = netdev_priv(dev);
3074
3075         PREPARE_DELAYED_WORK(&tp->task, task);
3076         schedule_delayed_work(&tp->task, 4);
3077 }
3078
3079 static void rtl8169_wait_for_quiescence(struct net_device *dev)
3080 {
3081         struct rtl8169_private *tp = netdev_priv(dev);
3082         void __iomem *ioaddr = tp->mmio_addr;
3083
3084         synchronize_irq(dev->irq);
3085
3086         /* Wait for any pending NAPI task to complete */
3087         napi_disable(&tp->napi);
3088
3089         rtl8169_irq_mask_and_ack(ioaddr);
3090
3091         tp->intr_mask = 0xffff;
3092         RTL_W16(IntrMask, tp->intr_event);
3093         napi_enable(&tp->napi);
3094 }
3095
3096 static void rtl8169_reinit_task(struct work_struct *work)
3097 {
3098         struct rtl8169_private *tp =
3099                 container_of(work, struct rtl8169_private, task.work);
3100         struct net_device *dev = tp->dev;
3101         int ret;
3102
3103         rtnl_lock();
3104
3105         if (!netif_running(dev))
3106                 goto out_unlock;
3107
3108         rtl8169_wait_for_quiescence(dev);
3109         rtl8169_close(dev);
3110
3111         ret = rtl8169_open(dev);
3112         if (unlikely(ret < 0)) {
3113                 if (net_ratelimit() && netif_msg_drv(tp)) {
3114                         printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
3115                                " Rescheduling.\n", dev->name, ret);
3116                 }
3117                 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3118         }
3119
3120 out_unlock:
3121         rtnl_unlock();
3122 }
3123
3124 static void rtl8169_reset_task(struct work_struct *work)
3125 {
3126         struct rtl8169_private *tp =
3127                 container_of(work, struct rtl8169_private, task.work);
3128         struct net_device *dev = tp->dev;
3129
3130         rtnl_lock();
3131
3132         if (!netif_running(dev))
3133                 goto out_unlock;
3134
3135         rtl8169_wait_for_quiescence(dev);
3136
3137         rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
3138         rtl8169_tx_clear(tp);
3139
3140         if (tp->dirty_rx == tp->cur_rx) {
3141                 rtl8169_init_ring_indexes(tp);
3142                 rtl_hw_start(dev);
3143                 netif_wake_queue(dev);
3144                 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
3145         } else {
3146                 if (net_ratelimit() && netif_msg_intr(tp)) {
3147                         printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
3148                                dev->name);
3149                 }
3150                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3151         }
3152
3153 out_unlock:
3154         rtnl_unlock();
3155 }
3156
3157 static void rtl8169_tx_timeout(struct net_device *dev)
3158 {
3159         struct rtl8169_private *tp = netdev_priv(dev);
3160
3161         rtl8169_hw_reset(tp->mmio_addr);
3162
3163         /* Let's wait a bit while any (async) irq lands on */
3164         rtl8169_schedule_work(dev, rtl8169_reset_task);
3165 }
3166
3167 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
3168                               u32 opts1)
3169 {
3170         struct skb_shared_info *info = skb_shinfo(skb);
3171         unsigned int cur_frag, entry;
3172         struct TxDesc * uninitialized_var(txd);
3173
3174         entry = tp->cur_tx;
3175         for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
3176                 skb_frag_t *frag = info->frags + cur_frag;
3177                 dma_addr_t mapping;
3178                 u32 status, len;
3179                 void *addr;
3180
3181                 entry = (entry + 1) % NUM_TX_DESC;
3182
3183                 txd = tp->TxDescArray + entry;
3184                 len = frag->size;
3185                 addr = ((void *) page_address(frag->page)) + frag->page_offset;
3186                 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
3187
3188                 /* anti gcc 2.95.3 bugware (sic) */
3189                 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3190
3191                 txd->opts1 = cpu_to_le32(status);
3192                 txd->addr = cpu_to_le64(mapping);
3193
3194                 tp->tx_skb[entry].len = len;
3195         }
3196
3197         if (cur_frag) {
3198                 tp->tx_skb[entry].skb = skb;
3199                 txd->opts1 |= cpu_to_le32(LastFrag);
3200         }
3201
3202         return cur_frag;
3203 }
3204
3205 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
3206 {
3207         if (dev->features & NETIF_F_TSO) {
3208                 u32 mss = skb_shinfo(skb)->gso_size;
3209
3210                 if (mss)
3211                         return LargeSend | ((mss & MSSMask) << MSSShift);
3212         }
3213         if (skb->ip_summed == CHECKSUM_PARTIAL) {
3214                 const struct iphdr *ip = ip_hdr(skb);
3215
3216                 if (ip->protocol == IPPROTO_TCP)
3217                         return IPCS | TCPCS;
3218                 else if (ip->protocol == IPPROTO_UDP)
3219                         return IPCS | UDPCS;
3220                 WARN_ON(1);     /* we need a WARN() */
3221         }
3222         return 0;
3223 }
3224
3225 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
3226 {
3227         struct rtl8169_private *tp = netdev_priv(dev);
3228         unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
3229         struct TxDesc *txd = tp->TxDescArray + entry;
3230         void __iomem *ioaddr = tp->mmio_addr;
3231         dma_addr_t mapping;
3232         u32 status, len;
3233         u32 opts1;
3234         int ret = NETDEV_TX_OK;
3235
3236         if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
3237                 if (netif_msg_drv(tp)) {
3238                         printk(KERN_ERR
3239                                "%s: BUG! Tx Ring full when queue awake!\n",
3240                                dev->name);
3241                 }
3242                 goto err_stop;
3243         }
3244
3245         if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
3246                 goto err_stop;
3247
3248         opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
3249
3250         frags = rtl8169_xmit_frags(tp, skb, opts1);
3251         if (frags) {
3252                 len = skb_headlen(skb);
3253                 opts1 |= FirstFrag;
3254         } else {
3255                 len = skb->len;
3256                 opts1 |= FirstFrag | LastFrag;
3257                 tp->tx_skb[entry].skb = skb;
3258         }
3259
3260         mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
3261
3262         tp->tx_skb[entry].len = len;
3263         txd->addr = cpu_to_le64(mapping);
3264         txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
3265
3266         wmb();
3267
3268         /* anti gcc 2.95.3 bugware (sic) */
3269         status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3270         txd->opts1 = cpu_to_le32(status);
3271
3272         dev->trans_start = jiffies;
3273
3274         tp->cur_tx += frags + 1;
3275
3276         smp_wmb();
3277
3278         RTL_W8(TxPoll, NPQ);    /* set polling bit */
3279
3280         if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
3281                 netif_stop_queue(dev);
3282                 smp_rmb();
3283                 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
3284                         netif_wake_queue(dev);
3285         }
3286
3287 out:
3288         return ret;
3289
3290 err_stop:
3291         netif_stop_queue(dev);
3292         ret = NETDEV_TX_BUSY;
3293         dev->stats.tx_dropped++;
3294         goto out;
3295 }
3296
3297 static void rtl8169_pcierr_interrupt(struct net_device *dev)
3298 {
3299         struct rtl8169_private *tp = netdev_priv(dev);
3300         struct pci_dev *pdev = tp->pci_dev;
3301         void __iomem *ioaddr = tp->mmio_addr;
3302         u16 pci_status, pci_cmd;
3303
3304         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
3305         pci_read_config_word(pdev, PCI_STATUS, &pci_status);
3306
3307         if (netif_msg_intr(tp)) {
3308                 printk(KERN_ERR
3309                        "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
3310                        dev->name, pci_cmd, pci_status);
3311         }
3312
3313         /*
3314          * The recovery sequence below admits a very elaborated explanation:
3315          * - it seems to work;
3316          * - I did not see what else could be done;
3317          * - it makes iop3xx happy.
3318          *
3319          * Feel free to adjust to your needs.
3320          */
3321         if (pdev->broken_parity_status)
3322                 pci_cmd &= ~PCI_COMMAND_PARITY;
3323         else
3324                 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
3325
3326         pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
3327
3328         pci_write_config_word(pdev, PCI_STATUS,
3329                 pci_status & (PCI_STATUS_DETECTED_PARITY |
3330                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
3331                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
3332
3333         /* The infamous DAC f*ckup only happens at boot time */
3334         if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
3335                 if (netif_msg_intr(tp))
3336                         printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
3337                 tp->cp_cmd &= ~PCIDAC;
3338                 RTL_W16(CPlusCmd, tp->cp_cmd);
3339                 dev->features &= ~NETIF_F_HIGHDMA;
3340         }
3341
3342         rtl8169_hw_reset(ioaddr);
3343
3344         rtl8169_schedule_work(dev, rtl8169_reinit_task);
3345 }
3346
3347 static void rtl8169_tx_interrupt(struct net_device *dev,
3348                                  struct rtl8169_private *tp,
3349                                  void __iomem *ioaddr)
3350 {
3351         unsigned int dirty_tx, tx_left;
3352
3353         dirty_tx = tp->dirty_tx;
3354         smp_rmb();
3355         tx_left = tp->cur_tx - dirty_tx;
3356
3357         while (tx_left > 0) {
3358                 unsigned int entry = dirty_tx % NUM_TX_DESC;
3359                 struct ring_info *tx_skb = tp->tx_skb + entry;
3360                 u32 len = tx_skb->len;
3361                 u32 status;
3362
3363                 rmb();
3364                 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
3365                 if (status & DescOwn)
3366                         break;
3367
3368                 dev->stats.tx_bytes += len;
3369                 dev->stats.tx_packets++;
3370
3371                 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
3372
3373                 if (status & LastFrag) {
3374                         dev_kfree_skb_irq(tx_skb->skb);
3375                         tx_skb->skb = NULL;
3376                 }
3377                 dirty_tx++;
3378                 tx_left--;
3379         }
3380
3381         if (tp->dirty_tx != dirty_tx) {
3382                 tp->dirty_tx = dirty_tx;
3383                 smp_wmb();
3384                 if (netif_queue_stopped(dev) &&
3385                     (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
3386                         netif_wake_queue(dev);
3387                 }
3388                 /*
3389                  * 8168 hack: TxPoll requests are lost when the Tx packets are
3390                  * too close. Let's kick an extra TxPoll request when a burst
3391                  * of start_xmit activity is detected (if it is not detected,
3392                  * it is slow enough). -- FR
3393                  */
3394                 smp_rmb();
3395                 if (tp->cur_tx != dirty_tx)
3396                         RTL_W8(TxPoll, NPQ);
3397         }
3398 }
3399
3400 static inline int rtl8169_fragmented_frame(u32 status)
3401 {
3402         return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
3403 }
3404
3405 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
3406 {
3407         u32 opts1 = le32_to_cpu(desc->opts1);
3408         u32 status = opts1 & RxProtoMask;
3409
3410         if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
3411             ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
3412             ((status == RxProtoIP) && !(opts1 & IPFail)))
3413                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3414         else
3415                 skb->ip_summed = CHECKSUM_NONE;
3416 }
3417
3418 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
3419                                        struct rtl8169_private *tp, int pkt_size,
3420                                        dma_addr_t addr)
3421 {
3422         struct sk_buff *skb;
3423         bool done = false;
3424
3425         if (pkt_size >= rx_copybreak)
3426                 goto out;
3427
3428         skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
3429         if (!skb)
3430                 goto out;
3431
3432         pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
3433                                     PCI_DMA_FROMDEVICE);
3434         skb_reserve(skb, NET_IP_ALIGN);
3435         skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
3436         *sk_buff = skb;
3437         done = true;
3438 out:
3439         return done;
3440 }
3441
3442 static int rtl8169_rx_interrupt(struct net_device *dev,
3443                                 struct rtl8169_private *tp,
3444                                 void __iomem *ioaddr, u32 budget)
3445 {
3446         unsigned int cur_rx, rx_left;
3447         unsigned int delta, count;
3448
3449         cur_rx = tp->cur_rx;
3450         rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3451         rx_left = min(rx_left, budget);
3452
3453         for (; rx_left > 0; rx_left--, cur_rx++) {
3454                 unsigned int entry = cur_rx % NUM_RX_DESC;
3455                 struct RxDesc *desc = tp->RxDescArray + entry;
3456                 u32 status;
3457
3458                 rmb();
3459                 status = le32_to_cpu(desc->opts1);
3460
3461                 if (status & DescOwn)
3462                         break;
3463                 if (unlikely(status & RxRES)) {
3464                         if (netif_msg_rx_err(tp)) {
3465                                 printk(KERN_INFO
3466                                        "%s: Rx ERROR. status = %08x\n",
3467                                        dev->name, status);
3468                         }
3469                         dev->stats.rx_errors++;
3470                         if (status & (RxRWT | RxRUNT))
3471                                 dev->stats.rx_length_errors++;
3472                         if (status & RxCRC)
3473                                 dev->stats.rx_crc_errors++;
3474                         if (status & RxFOVF) {
3475                                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3476                                 dev->stats.rx_fifo_errors++;
3477                         }
3478                         rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3479                 } else {
3480                         struct sk_buff *skb = tp->Rx_skbuff[entry];
3481                         dma_addr_t addr = le64_to_cpu(desc->addr);
3482                         int pkt_size = (status & 0x00001FFF) - 4;
3483                         struct pci_dev *pdev = tp->pci_dev;
3484
3485                         /*
3486                          * The driver does not support incoming fragmented
3487                          * frames. They are seen as a symptom of over-mtu
3488                          * sized frames.
3489                          */
3490                         if (unlikely(rtl8169_fragmented_frame(status))) {
3491                                 dev->stats.rx_dropped++;
3492                                 dev->stats.rx_length_errors++;
3493                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3494                                 continue;
3495                         }
3496
3497                         rtl8169_rx_csum(skb, desc);
3498
3499                         if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3500                                 pci_dma_sync_single_for_device(pdev, addr,
3501                                         pkt_size, PCI_DMA_FROMDEVICE);
3502                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3503                         } else {
3504                                 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3505                                                  PCI_DMA_FROMDEVICE);
3506                                 tp->Rx_skbuff[entry] = NULL;
3507                         }
3508
3509                         skb_put(skb, pkt_size);
3510                         skb->protocol = eth_type_trans(skb, dev);
3511
3512                         if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3513                                 netif_receive_skb(skb);
3514
3515                         dev->stats.rx_bytes += pkt_size;
3516                         dev->stats.rx_packets++;
3517                 }
3518
3519                 /* Work around for AMD plateform. */
3520                 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3521                     (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3522                         desc->opts2 = 0;
3523                         cur_rx++;
3524                 }
3525         }
3526
3527         count = cur_rx - tp->cur_rx;
3528         tp->cur_rx = cur_rx;
3529
3530         delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3531         if (!delta && count && netif_msg_intr(tp))
3532                 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3533         tp->dirty_rx += delta;
3534
3535         /*
3536          * FIXME: until there is periodic timer to try and refill the ring,
3537          * a temporary shortage may definitely kill the Rx process.
3538          * - disable the asic to try and avoid an overflow and kick it again
3539          *   after refill ?
3540          * - how do others driver handle this condition (Uh oh...).
3541          */
3542         if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3543                 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3544
3545         return count;
3546 }
3547
3548 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3549 {
3550         struct net_device *dev = dev_instance;
3551         struct rtl8169_private *tp = netdev_priv(dev);
3552         void __iomem *ioaddr = tp->mmio_addr;
3553         int handled = 0;
3554         int status;
3555
3556         /* loop handling interrupts until we have no new ones or
3557          * we hit a invalid/hotplug case.
3558          */
3559         status = RTL_R16(IntrStatus);
3560         while (status && status != 0xffff) {
3561                 handled = 1;
3562
3563                 /* Handle all of the error cases first. These will reset
3564                  * the chip, so just exit the loop.
3565                  */
3566                 if (unlikely(!netif_running(dev))) {
3567                         rtl8169_asic_down(ioaddr);
3568                         break;
3569                 }
3570
3571                 /* Work around for rx fifo overflow */
3572                 if (unlikely(status & RxFIFOOver) &&
3573                 (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3574                         netif_stop_queue(dev);
3575                         rtl8169_tx_timeout(dev);
3576                         break;
3577                 }
3578
3579                 if (unlikely(status & SYSErr)) {
3580                         rtl8169_pcierr_interrupt(dev);
3581                         break;
3582                 }
3583
3584                 if (status & LinkChg)
3585                         rtl8169_check_link_status(dev, tp, ioaddr);
3586
3587                 /* We need to see the lastest version of tp->intr_mask to
3588                  * avoid ignoring an MSI interrupt and having to wait for
3589                  * another event which may never come.
3590                  */
3591                 smp_rmb();
3592                 if (status & tp->intr_mask & tp->napi_event) {
3593                         RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3594                         tp->intr_mask = ~tp->napi_event;
3595
3596                         if (likely(napi_schedule_prep(&tp->napi)))
3597                                 __napi_schedule(&tp->napi);
3598                         else if (netif_msg_intr(tp)) {
3599                                 printk(KERN_INFO "%s: interrupt %04x in poll\n",
3600                                 dev->name, status);
3601                         }
3602                 }
3603
3604                 /* We only get a new MSI interrupt when all active irq
3605                  * sources on the chip have been acknowledged. So, ack
3606                  * everything we've seen and check if new sources have become
3607                  * active to avoid blocking all interrupts from the chip.
3608                  */
3609                 RTL_W16(IntrStatus,
3610                         (status & RxFIFOOver) ? (status | RxOverflow) : status);
3611                 status = RTL_R16(IntrStatus);
3612         }
3613
3614         return IRQ_RETVAL(handled);
3615 }
3616
3617 static int rtl8169_poll(struct napi_struct *napi, int budget)
3618 {
3619         struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3620         struct net_device *dev = tp->dev;
3621         void __iomem *ioaddr = tp->mmio_addr;
3622         int work_done;
3623
3624         work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3625         rtl8169_tx_interrupt(dev, tp, ioaddr);
3626
3627         if (work_done < budget) {
3628                 napi_complete(napi);
3629
3630                 /* We need for force the visibility of tp->intr_mask
3631                  * for other CPUs, as we can loose an MSI interrupt
3632                  * and potentially wait for a retransmit timeout if we don't.
3633                  * The posted write to IntrMask is safe, as it will
3634                  * eventually make it to the chip and we won't loose anything
3635                  * until it does.
3636                  */
3637                 tp->intr_mask = 0xffff;
3638                 smp_wmb();
3639                 RTL_W16(IntrMask, tp->intr_event);
3640         }
3641
3642         return work_done;
3643 }
3644
3645 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3646 {
3647         struct rtl8169_private *tp = netdev_priv(dev);
3648
3649         if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3650                 return;
3651
3652         dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3653         RTL_W32(RxMissed, 0);
3654 }
3655
3656 static void rtl8169_down(struct net_device *dev)
3657 {
3658         struct rtl8169_private *tp = netdev_priv(dev);
3659         void __iomem *ioaddr = tp->mmio_addr;
3660         unsigned int intrmask;
3661
3662         rtl8169_delete_timer(dev);
3663
3664         netif_stop_queue(dev);
3665
3666         napi_disable(&tp->napi);
3667
3668 core_down:
3669         spin_lock_irq(&tp->lock);
3670
3671         rtl8169_asic_down(ioaddr);
3672
3673         rtl8169_rx_missed(dev, ioaddr);
3674
3675         spin_unlock_irq(&tp->lock);
3676
3677         synchronize_irq(dev->irq);
3678
3679         /* Give a racing hard_start_xmit a few cycles to complete. */
3680         synchronize_sched();  /* FIXME: should this be synchronize_irq()? */
3681
3682         /*
3683          * And now for the 50k$ question: are IRQ disabled or not ?
3684          *
3685          * Two paths lead here:
3686          * 1) dev->close
3687          *    -> netif_running() is available to sync the current code and the
3688          *       IRQ handler. See rtl8169_interrupt for details.
3689          * 2) dev->change_mtu
3690          *    -> rtl8169_poll can not be issued again and re-enable the
3691          *       interruptions. Let's simply issue the IRQ down sequence again.
3692          *
3693          * No loop if hotpluged or major error (0xffff).
3694          */
3695         intrmask = RTL_R16(IntrMask);
3696         if (intrmask && (intrmask != 0xffff))
3697                 goto core_down;
3698
3699         rtl8169_tx_clear(tp);
3700
3701         rtl8169_rx_clear(tp);
3702 }
3703
3704 static int rtl8169_close(struct net_device *dev)
3705 {
3706         struct rtl8169_private *tp = netdev_priv(dev);
3707         struct pci_dev *pdev = tp->pci_dev;
3708
3709         /* update counters before going down */
3710         rtl8169_update_counters(dev);
3711
3712         rtl8169_down(dev);
3713
3714         free_irq(dev->irq, dev);
3715
3716         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3717                             tp->RxPhyAddr);
3718         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3719                             tp->TxPhyAddr);
3720         tp->TxDescArray = NULL;
3721         tp->RxDescArray = NULL;
3722
3723         return 0;
3724 }
3725
3726 static void rtl_set_rx_mode(struct net_device *dev)
3727 {
3728         struct rtl8169_private *tp = netdev_priv(dev);
3729         void __iomem *ioaddr = tp->mmio_addr;
3730         unsigned long flags;
3731         u32 mc_filter[2];       /* Multicast hash filter */
3732         int rx_mode;
3733         u32 tmp = 0;
3734
3735         if (dev->flags & IFF_PROMISC) {
3736                 /* Unconditionally log net taps. */
3737                 if (netif_msg_link(tp)) {
3738                         printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3739                                dev->name);
3740                 }
3741                 rx_mode =
3742                     AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3743                     AcceptAllPhys;
3744                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3745         } else if ((dev->mc_count > multicast_filter_limit)
3746                    || (dev->flags & IFF_ALLMULTI)) {
3747                 /* Too many to filter perfectly -- accept all multicasts. */
3748                 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3749                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3750         } else {
3751                 struct dev_mc_list *mclist;
3752                 unsigned int i;
3753
3754                 rx_mode = AcceptBroadcast | AcceptMyPhys;
3755                 mc_filter[1] = mc_filter[0] = 0;
3756                 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3757                      i++, mclist = mclist->next) {
3758                         int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3759                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3760                         rx_mode |= AcceptMulticast;
3761                 }
3762         }
3763
3764         spin_lock_irqsave(&tp->lock, flags);
3765
3766         tmp = rtl8169_rx_config | rx_mode |
3767               (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3768
3769         if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3770                 u32 data = mc_filter[0];
3771
3772                 mc_filter[0] = swab32(mc_filter[1]);
3773                 mc_filter[1] = swab32(data);
3774         }
3775
3776         RTL_W32(MAR0 + 0, mc_filter[0]);
3777         RTL_W32(MAR0 + 4, mc_filter[1]);
3778
3779         RTL_W32(RxConfig, tmp);
3780
3781         spin_unlock_irqrestore(&tp->lock, flags);
3782 }
3783
3784 /**
3785  *  rtl8169_get_stats - Get rtl8169 read/write statistics
3786  *  @dev: The Ethernet Device to get statistics for
3787  *
3788  *  Get TX/RX statistics for rtl8169
3789  */
3790 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3791 {
3792         struct rtl8169_private *tp = netdev_priv(dev);
3793         void __iomem *ioaddr = tp->mmio_addr;
3794         unsigned long flags;
3795
3796         if (netif_running(dev)) {
3797                 spin_lock_irqsave(&tp->lock, flags);
3798                 rtl8169_rx_missed(dev, ioaddr);
3799                 spin_unlock_irqrestore(&tp->lock, flags);
3800         }
3801
3802         return &dev->stats;
3803 }
3804
3805 #ifdef CONFIG_PM
3806
3807 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3808 {
3809         struct net_device *dev = pci_get_drvdata(pdev);
3810         struct rtl8169_private *tp = netdev_priv(dev);
3811         void __iomem *ioaddr = tp->mmio_addr;
3812
3813         if (!netif_running(dev))
3814                 goto out_pci_suspend;
3815
3816         netif_device_detach(dev);
3817         netif_stop_queue(dev);
3818
3819         spin_lock_irq(&tp->lock);
3820
3821         rtl8169_asic_down(ioaddr);
3822
3823         rtl8169_rx_missed(dev, ioaddr);
3824
3825         spin_unlock_irq(&tp->lock);
3826
3827 out_pci_suspend:
3828         pci_save_state(pdev);
3829         pci_enable_wake(pdev, pci_choose_state(pdev, state),
3830                 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3831         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3832
3833         return 0;
3834 }
3835
3836 static int rtl8169_resume(struct pci_dev *pdev)
3837 {
3838         struct net_device *dev = pci_get_drvdata(pdev);
3839
3840         pci_set_power_state(pdev, PCI_D0);
3841         pci_restore_state(pdev);
3842         pci_enable_wake(pdev, PCI_D0, 0);
3843
3844         if (!netif_running(dev))
3845                 goto out;
3846
3847         netif_device_attach(dev);
3848
3849         rtl8169_schedule_work(dev, rtl8169_reset_task);
3850 out:
3851         return 0;
3852 }
3853
3854 static void rtl_shutdown(struct pci_dev *pdev)
3855 {
3856         rtl8169_suspend(pdev, PMSG_SUSPEND);
3857 }
3858
3859 #endif /* CONFIG_PM */
3860
3861 static struct pci_driver rtl8169_pci_driver = {
3862         .name           = MODULENAME,
3863         .id_table       = rtl8169_pci_tbl,
3864         .probe          = rtl8169_init_one,
3865         .remove         = __devexit_p(rtl8169_remove_one),
3866 #ifdef CONFIG_PM
3867         .suspend        = rtl8169_suspend,
3868         .resume         = rtl8169_resume,
3869         .shutdown       = rtl_shutdown,
3870 #endif
3871 };
3872
3873 static int __init rtl8169_init_module(void)
3874 {
3875         return pci_register_driver(&rtl8169_pci_driver);
3876 }
3877
3878 static void __exit rtl8169_cleanup_module(void)
3879 {
3880         pci_unregister_driver(&rtl8169_pci_driver);
3881 }
3882
3883 module_init(rtl8169_init_module);
3884 module_exit(rtl8169_cleanup_module);