27f90b2139c0cc0db75c9bb10020085cca068527
[linux-3.10.git] / drivers / net / r8169.c
1 /*
2 =========================================================================
3  r8169.c: A RealTek RTL-8169 Gigabit Ethernet driver for Linux kernel 2.4.x.
4  --------------------------------------------------------------------
5
6  History:
7  Feb  4 2002    - created initially by ShuChen <shuchen@realtek.com.tw>.
8  May 20 2002    - Add link status force-mode and TBI mode support.
9         2004    - Massive updates. See kernel SCM system for details.
10 =========================================================================
11   1. [DEPRECATED: use ethtool instead] The media can be forced in 5 modes.
12          Command: 'insmod r8169 media = SET_MEDIA'
13          Ex:      'insmod r8169 media = 0x04' will force PHY to operate in 100Mpbs Half-duplex.
14
15          SET_MEDIA can be:
16                 _10_Half        = 0x01
17                 _10_Full        = 0x02
18                 _100_Half       = 0x04
19                 _100_Full       = 0x08
20                 _1000_Full      = 0x10
21
22   2. Support TBI mode.
23 =========================================================================
24 VERSION 1.1     <2002/10/4>
25
26         The bit4:0 of MII register 4 is called "selector field", and have to be
27         00001b to indicate support of IEEE std 802.3 during NWay process of
28         exchanging Link Code Word (FLP).
29
30 VERSION 1.2     <2002/11/30>
31
32         - Large style cleanup
33         - Use ether_crc in stock kernel (linux/crc32.h)
34         - Copy mc_filter setup code from 8139cp
35           (includes an optimization, and avoids set_bit use)
36
37 VERSION 1.6LK   <2004/04/14>
38
39         - Merge of Realtek's version 1.6
40         - Conversion to DMA API
41         - Suspend/resume
42         - Endianness
43         - Misc Rx/Tx bugs
44
45 VERSION 2.2LK   <2005/01/25>
46
47         - RX csum, TX csum/SG, TSO
48         - VLAN
49         - baby (< 7200) Jumbo frames support
50         - Merge of Realtek's version 2.2 (new phy)
51  */
52
53 #include <linux/module.h>
54 #include <linux/moduleparam.h>
55 #include <linux/pci.h>
56 #include <linux/netdevice.h>
57 #include <linux/etherdevice.h>
58 #include <linux/delay.h>
59 #include <linux/ethtool.h>
60 #include <linux/mii.h>
61 #include <linux/if_vlan.h>
62 #include <linux/crc32.h>
63 #include <linux/in.h>
64 #include <linux/ip.h>
65 #include <linux/tcp.h>
66 #include <linux/init.h>
67 #include <linux/dma-mapping.h>
68
69 #include <asm/io.h>
70 #include <asm/irq.h>
71
72 #ifdef CONFIG_R8169_NAPI
73 #define NAPI_SUFFIX     "-NAPI"
74 #else
75 #define NAPI_SUFFIX     ""
76 #endif
77
78 #define RTL8169_VERSION "2.2LK" NAPI_SUFFIX
79 #define MODULENAME "r8169"
80 #define PFX MODULENAME ": "
81
82 #ifdef RTL8169_DEBUG
83 #define assert(expr) \
84         if (!(expr)) {                                  \
85                 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
86                 #expr,__FILE__,__FUNCTION__,__LINE__);          \
87         }
88 #define dprintk(fmt, args...)   do { printk(PFX fmt, ## args); } while (0)
89 #else
90 #define assert(expr) do {} while (0)
91 #define dprintk(fmt, args...)   do {} while (0)
92 #endif /* RTL8169_DEBUG */
93
94 #define R8169_MSG_DEFAULT \
95         (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
96
97 #define TX_BUFFS_AVAIL(tp) \
98         (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
99
100 #ifdef CONFIG_R8169_NAPI
101 #define rtl8169_rx_skb                  netif_receive_skb
102 #define rtl8169_rx_hwaccel_skb          vlan_hwaccel_receive_skb
103 #define rtl8169_rx_quota(count, quota)  min(count, quota)
104 #else
105 #define rtl8169_rx_skb                  netif_rx
106 #define rtl8169_rx_hwaccel_skb          vlan_hwaccel_rx
107 #define rtl8169_rx_quota(count, quota)  count
108 #endif
109
110 /* media options */
111 #define MAX_UNITS 8
112 static int media[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
113 static int num_media = 0;
114
115 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
116 static const int max_interrupt_work = 20;
117
118 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
119    The RTL chips use a 64 element hash table based on the Ethernet CRC. */
120 static const int multicast_filter_limit = 32;
121
122 /* MAC address length */
123 #define MAC_ADDR_LEN    6
124
125 #define RX_FIFO_THRESH  7       /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
126 #define RX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
127 #define TX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
128 #define EarlyTxThld     0x3F    /* 0x3F means NO early transmit */
129 #define RxPacketMaxSize 0x3FE8  /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
130 #define SafeMtu         0x1c20  /* ... actually life sucks beyond ~7k */
131 #define InterFrameGap   0x03    /* 3 means InterFrameGap = the shortest one */
132
133 #define R8169_REGS_SIZE         256
134 #define R8169_NAPI_WEIGHT       64
135 #define NUM_TX_DESC     64      /* Number of Tx descriptor registers */
136 #define NUM_RX_DESC     256     /* Number of Rx descriptor registers */
137 #define RX_BUF_SIZE     1536    /* Rx Buffer size */
138 #define R8169_TX_RING_BYTES     (NUM_TX_DESC * sizeof(struct TxDesc))
139 #define R8169_RX_RING_BYTES     (NUM_RX_DESC * sizeof(struct RxDesc))
140
141 #define RTL8169_TX_TIMEOUT      (6*HZ)
142 #define RTL8169_PHY_TIMEOUT     (10*HZ)
143
144 /* write/read MMIO register */
145 #define RTL_W8(reg, val8)       writeb ((val8), ioaddr + (reg))
146 #define RTL_W16(reg, val16)     writew ((val16), ioaddr + (reg))
147 #define RTL_W32(reg, val32)     writel ((val32), ioaddr + (reg))
148 #define RTL_R8(reg)             readb (ioaddr + (reg))
149 #define RTL_R16(reg)            readw (ioaddr + (reg))
150 #define RTL_R32(reg)            ((unsigned long) readl (ioaddr + (reg)))
151
152 enum mac_version {
153         RTL_GIGA_MAC_VER_01 = 0x00,
154         RTL_GIGA_MAC_VER_02 = 0x01,
155         RTL_GIGA_MAC_VER_03 = 0x02,
156         RTL_GIGA_MAC_VER_04 = 0x03,
157         RTL_GIGA_MAC_VER_05 = 0x04,
158         RTL_GIGA_MAC_VER_11 = 0x0b,
159         RTL_GIGA_MAC_VER_12 = 0x0c,
160         RTL_GIGA_MAC_VER_13 = 0x0d,
161         RTL_GIGA_MAC_VER_14 = 0x0e,
162         RTL_GIGA_MAC_VER_15 = 0x0f
163 };
164
165 enum phy_version {
166         RTL_GIGA_PHY_VER_C = 0x03, /* PHY Reg 0x03 bit0-3 == 0x0000 */
167         RTL_GIGA_PHY_VER_D = 0x04, /* PHY Reg 0x03 bit0-3 == 0x0000 */
168         RTL_GIGA_PHY_VER_E = 0x05, /* PHY Reg 0x03 bit0-3 == 0x0000 */
169         RTL_GIGA_PHY_VER_F = 0x06, /* PHY Reg 0x03 bit0-3 == 0x0001 */
170         RTL_GIGA_PHY_VER_G = 0x07, /* PHY Reg 0x03 bit0-3 == 0x0002 */
171         RTL_GIGA_PHY_VER_H = 0x08, /* PHY Reg 0x03 bit0-3 == 0x0003 */
172 };
173
174 #define _R(NAME,MAC,MASK) \
175         { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
176
177 static const struct {
178         const char *name;
179         u8 mac_version;
180         u32 RxConfigMask;       /* Clears the bits supported by this chip */
181 } rtl_chip_info[] = {
182         _R("RTL8169",           RTL_GIGA_MAC_VER_01, 0xff7e1880),
183         _R("RTL8169s/8110s",    RTL_GIGA_MAC_VER_02, 0xff7e1880),
184         _R("RTL8169s/8110s",    RTL_GIGA_MAC_VER_03, 0xff7e1880),
185         _R("RTL8169sb/8110sb",  RTL_GIGA_MAC_VER_04, 0xff7e1880),
186         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_05, 0xff7e1880),
187         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
188         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
189         _R("RTL8101e",          RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
190         _R("RTL8100e",          RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
191         _R("RTL8100e",          RTL_GIGA_MAC_VER_15, 0xff7e1880)  // PCI-E 8139
192 };
193 #undef _R
194
195 enum cfg_version {
196         RTL_CFG_0 = 0x00,
197         RTL_CFG_1,
198         RTL_CFG_2
199 };
200
201 static const struct {
202         unsigned int region;
203         unsigned int align;
204 } rtl_cfg_info[] = {
205         [RTL_CFG_0] = { 1, NET_IP_ALIGN },
206         [RTL_CFG_1] = { 2, NET_IP_ALIGN },
207         [RTL_CFG_2] = { 2, 8 }
208 };
209
210 static struct pci_device_id rtl8169_pci_tbl[] = {
211         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8129), 0, 0, RTL_CFG_0 },
212         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8136), 0, 0, RTL_CFG_2 },
213         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8167), 0, 0, RTL_CFG_0 },
214         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8168), 0, 0, RTL_CFG_2 },
215         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8169), 0, 0, RTL_CFG_0 },
216         { PCI_DEVICE(PCI_VENDOR_ID_DLINK,       0x4300), 0, 0, RTL_CFG_0 },
217         { PCI_DEVICE(0x1259,                    0xc107), 0, 0, RTL_CFG_0 },
218         { PCI_DEVICE(0x16ec,                    0x0116), 0, 0, RTL_CFG_0 },
219         { PCI_VENDOR_ID_LINKSYS,                0x1032,
220                 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
221         {0,},
222 };
223
224 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
225
226 static int rx_copybreak = 200;
227 static int use_dac;
228 static struct {
229         u32 msg_enable;
230 } debug = { -1 };
231
232 enum RTL8169_registers {
233         MAC0 = 0,               /* Ethernet hardware address. */
234         MAR0 = 8,               /* Multicast filter. */
235         CounterAddrLow = 0x10,
236         CounterAddrHigh = 0x14,
237         TxDescStartAddrLow = 0x20,
238         TxDescStartAddrHigh = 0x24,
239         TxHDescStartAddrLow = 0x28,
240         TxHDescStartAddrHigh = 0x2c,
241         FLASH = 0x30,
242         ERSR = 0x36,
243         ChipCmd = 0x37,
244         TxPoll = 0x38,
245         IntrMask = 0x3C,
246         IntrStatus = 0x3E,
247         TxConfig = 0x40,
248         RxConfig = 0x44,
249         RxMissed = 0x4C,
250         Cfg9346 = 0x50,
251         Config0 = 0x51,
252         Config1 = 0x52,
253         Config2 = 0x53,
254         Config3 = 0x54,
255         Config4 = 0x55,
256         Config5 = 0x56,
257         MultiIntr = 0x5C,
258         PHYAR = 0x60,
259         TBICSR = 0x64,
260         TBI_ANAR = 0x68,
261         TBI_LPAR = 0x6A,
262         PHYstatus = 0x6C,
263         RxMaxSize = 0xDA,
264         CPlusCmd = 0xE0,
265         IntrMitigate = 0xE2,
266         RxDescAddrLow = 0xE4,
267         RxDescAddrHigh = 0xE8,
268         EarlyTxThres = 0xEC,
269         FuncEvent = 0xF0,
270         FuncEventMask = 0xF4,
271         FuncPresetState = 0xF8,
272         FuncForceEvent = 0xFC,
273 };
274
275 enum RTL8169_register_content {
276         /* InterruptStatusBits */
277         SYSErr = 0x8000,
278         PCSTimeout = 0x4000,
279         SWInt = 0x0100,
280         TxDescUnavail = 0x80,
281         RxFIFOOver = 0x40,
282         LinkChg = 0x20,
283         RxOverflow = 0x10,
284         TxErr = 0x08,
285         TxOK = 0x04,
286         RxErr = 0x02,
287         RxOK = 0x01,
288
289         /* RxStatusDesc */
290         RxFOVF  = (1 << 23),
291         RxRWT   = (1 << 22),
292         RxRES   = (1 << 21),
293         RxRUNT  = (1 << 20),
294         RxCRC   = (1 << 19),
295
296         /* ChipCmdBits */
297         CmdReset = 0x10,
298         CmdRxEnb = 0x08,
299         CmdTxEnb = 0x04,
300         RxBufEmpty = 0x01,
301
302         /* Cfg9346Bits */
303         Cfg9346_Lock = 0x00,
304         Cfg9346_Unlock = 0xC0,
305
306         /* rx_mode_bits */
307         AcceptErr = 0x20,
308         AcceptRunt = 0x10,
309         AcceptBroadcast = 0x08,
310         AcceptMulticast = 0x04,
311         AcceptMyPhys = 0x02,
312         AcceptAllPhys = 0x01,
313
314         /* RxConfigBits */
315         RxCfgFIFOShift = 13,
316         RxCfgDMAShift = 8,
317
318         /* TxConfigBits */
319         TxInterFrameGapShift = 24,
320         TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
321
322         /* Config1 register p.24 */
323         PMEnable        = (1 << 0),     /* Power Management Enable */
324
325         /* Config3 register p.25 */
326         MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
327         LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
328
329         /* Config5 register p.27 */
330         BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
331         MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
332         UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
333         LanWake         = (1 << 1),     /* LanWake enable/disable */
334         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
335
336         /* TBICSR p.28 */
337         TBIReset        = 0x80000000,
338         TBILoopback     = 0x40000000,
339         TBINwEnable     = 0x20000000,
340         TBINwRestart    = 0x10000000,
341         TBILinkOk       = 0x02000000,
342         TBINwComplete   = 0x01000000,
343
344         /* CPlusCmd p.31 */
345         RxVlan          = (1 << 6),
346         RxChkSum        = (1 << 5),
347         PCIDAC          = (1 << 4),
348         PCIMulRW        = (1 << 3),
349
350         /* rtl8169_PHYstatus */
351         TBI_Enable = 0x80,
352         TxFlowCtrl = 0x40,
353         RxFlowCtrl = 0x20,
354         _1000bpsF = 0x10,
355         _100bps = 0x08,
356         _10bps = 0x04,
357         LinkStatus = 0x02,
358         FullDup = 0x01,
359
360         /* _MediaType */
361         _10_Half = 0x01,
362         _10_Full = 0x02,
363         _100_Half = 0x04,
364         _100_Full = 0x08,
365         _1000_Full = 0x10,
366
367         /* _TBICSRBit */
368         TBILinkOK = 0x02000000,
369
370         /* DumpCounterCommand */
371         CounterDump = 0x8,
372 };
373
374 enum _DescStatusBit {
375         DescOwn         = (1 << 31), /* Descriptor is owned by NIC */
376         RingEnd         = (1 << 30), /* End of descriptor ring */
377         FirstFrag       = (1 << 29), /* First segment of a packet */
378         LastFrag        = (1 << 28), /* Final segment of a packet */
379
380         /* Tx private */
381         LargeSend       = (1 << 27), /* TCP Large Send Offload (TSO) */
382         MSSShift        = 16,        /* MSS value position */
383         MSSMask         = 0xfff,     /* MSS value + LargeSend bit: 12 bits */
384         IPCS            = (1 << 18), /* Calculate IP checksum */
385         UDPCS           = (1 << 17), /* Calculate UDP/IP checksum */
386         TCPCS           = (1 << 16), /* Calculate TCP/IP checksum */
387         TxVlanTag       = (1 << 17), /* Add VLAN tag */
388
389         /* Rx private */
390         PID1            = (1 << 18), /* Protocol ID bit 1/2 */
391         PID0            = (1 << 17), /* Protocol ID bit 2/2 */
392
393 #define RxProtoUDP      (PID1)
394 #define RxProtoTCP      (PID0)
395 #define RxProtoIP       (PID1 | PID0)
396 #define RxProtoMask     RxProtoIP
397
398         IPFail          = (1 << 16), /* IP checksum failed */
399         UDPFail         = (1 << 15), /* UDP/IP checksum failed */
400         TCPFail         = (1 << 14), /* TCP/IP checksum failed */
401         RxVlanTag       = (1 << 16), /* VLAN tag available */
402 };
403
404 #define RsvdMask        0x3fffc000
405
406 struct TxDesc {
407         u32 opts1;
408         u32 opts2;
409         u64 addr;
410 };
411
412 struct RxDesc {
413         u32 opts1;
414         u32 opts2;
415         u64 addr;
416 };
417
418 struct ring_info {
419         struct sk_buff  *skb;
420         u32             len;
421         u8              __pad[sizeof(void *) - sizeof(u32)];
422 };
423
424 struct rtl8169_private {
425         void __iomem *mmio_addr;        /* memory map physical address */
426         struct pci_dev *pci_dev;        /* Index of PCI device */
427         struct net_device_stats stats;  /* statistics of net device */
428         spinlock_t lock;                /* spin lock flag */
429         u32 msg_enable;
430         int chipset;
431         int mac_version;
432         int phy_version;
433         u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
434         u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
435         u32 dirty_rx;
436         u32 dirty_tx;
437         struct TxDesc *TxDescArray;     /* 256-aligned Tx descriptor ring */
438         struct RxDesc *RxDescArray;     /* 256-aligned Rx descriptor ring */
439         dma_addr_t TxPhyAddr;
440         dma_addr_t RxPhyAddr;
441         struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
442         struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
443         unsigned align;
444         unsigned rx_buf_sz;
445         struct timer_list timer;
446         u16 cp_cmd;
447         u16 intr_mask;
448         int phy_auto_nego_reg;
449         int phy_1000_ctrl_reg;
450 #ifdef CONFIG_R8169_VLAN
451         struct vlan_group *vlgrp;
452 #endif
453         int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
454         void (*get_settings)(struct net_device *, struct ethtool_cmd *);
455         void (*phy_reset_enable)(void __iomem *);
456         unsigned int (*phy_reset_pending)(void __iomem *);
457         unsigned int (*link_ok)(void __iomem *);
458         struct work_struct task;
459         unsigned wol_enabled : 1;
460 };
461
462 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
463 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
464 module_param_array(media, int, &num_media, 0);
465 MODULE_PARM_DESC(media, "force phy operation. Deprecated by ethtool (8).");
466 module_param(rx_copybreak, int, 0);
467 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
468 module_param(use_dac, int, 0);
469 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
470 module_param_named(debug, debug.msg_enable, int, 0);
471 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
472 MODULE_LICENSE("GPL");
473 MODULE_VERSION(RTL8169_VERSION);
474
475 static int rtl8169_open(struct net_device *dev);
476 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
477 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
478 static int rtl8169_init_ring(struct net_device *dev);
479 static void rtl8169_hw_start(struct net_device *dev);
480 static int rtl8169_close(struct net_device *dev);
481 static void rtl8169_set_rx_mode(struct net_device *dev);
482 static void rtl8169_tx_timeout(struct net_device *dev);
483 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
484 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
485                                 void __iomem *);
486 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
487 static void rtl8169_down(struct net_device *dev);
488
489 #ifdef CONFIG_R8169_NAPI
490 static int rtl8169_poll(struct net_device *dev, int *budget);
491 #endif
492
493 static const u16 rtl8169_intr_mask =
494         SYSErr | LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK;
495 static const u16 rtl8169_napi_event =
496         RxOK | RxOverflow | RxFIFOOver | TxOK | TxErr;
497 static const unsigned int rtl8169_rx_config =
498         (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
499
500 static void mdio_write(void __iomem *ioaddr, int RegAddr, int value)
501 {
502         int i;
503
504         RTL_W32(PHYAR, 0x80000000 | (RegAddr & 0xFF) << 16 | value);
505
506         for (i = 20; i > 0; i--) {
507                 /* Check if the RTL8169 has completed writing to the specified MII register */
508                 if (!(RTL_R32(PHYAR) & 0x80000000))
509                         break;
510                 udelay(25);
511         }
512 }
513
514 static int mdio_read(void __iomem *ioaddr, int RegAddr)
515 {
516         int i, value = -1;
517
518         RTL_W32(PHYAR, 0x0 | (RegAddr & 0xFF) << 16);
519
520         for (i = 20; i > 0; i--) {
521                 /* Check if the RTL8169 has completed retrieving data from the specified MII register */
522                 if (RTL_R32(PHYAR) & 0x80000000) {
523                         value = (int) (RTL_R32(PHYAR) & 0xFFFF);
524                         break;
525                 }
526                 udelay(25);
527         }
528         return value;
529 }
530
531 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
532 {
533         RTL_W16(IntrMask, 0x0000);
534
535         RTL_W16(IntrStatus, 0xffff);
536 }
537
538 static void rtl8169_asic_down(void __iomem *ioaddr)
539 {
540         RTL_W8(ChipCmd, 0x00);
541         rtl8169_irq_mask_and_ack(ioaddr);
542         RTL_R16(CPlusCmd);
543 }
544
545 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
546 {
547         return RTL_R32(TBICSR) & TBIReset;
548 }
549
550 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
551 {
552         return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
553 }
554
555 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
556 {
557         return RTL_R32(TBICSR) & TBILinkOk;
558 }
559
560 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
561 {
562         return RTL_R8(PHYstatus) & LinkStatus;
563 }
564
565 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
566 {
567         RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
568 }
569
570 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
571 {
572         unsigned int val;
573
574         val = (mdio_read(ioaddr, MII_BMCR) | BMCR_RESET) & 0xffff;
575         mdio_write(ioaddr, MII_BMCR, val);
576 }
577
578 static void rtl8169_check_link_status(struct net_device *dev,
579                                       struct rtl8169_private *tp, void __iomem *ioaddr)
580 {
581         unsigned long flags;
582
583         spin_lock_irqsave(&tp->lock, flags);
584         if (tp->link_ok(ioaddr)) {
585                 netif_carrier_on(dev);
586                 if (netif_msg_ifup(tp))
587                         printk(KERN_INFO PFX "%s: link up\n", dev->name);
588         } else {
589                 if (netif_msg_ifdown(tp))
590                         printk(KERN_INFO PFX "%s: link down\n", dev->name);
591                 netif_carrier_off(dev);
592         }
593         spin_unlock_irqrestore(&tp->lock, flags);
594 }
595
596 static void rtl8169_link_option(int idx, u8 *autoneg, u16 *speed, u8 *duplex)
597 {
598         struct {
599                 u16 speed;
600                 u8 duplex;
601                 u8 autoneg;
602                 u8 media;
603         } link_settings[] = {
604                 { SPEED_10,     DUPLEX_HALF, AUTONEG_DISABLE,   _10_Half },
605                 { SPEED_10,     DUPLEX_FULL, AUTONEG_DISABLE,   _10_Full },
606                 { SPEED_100,    DUPLEX_HALF, AUTONEG_DISABLE,   _100_Half },
607                 { SPEED_100,    DUPLEX_FULL, AUTONEG_DISABLE,   _100_Full },
608                 { SPEED_1000,   DUPLEX_FULL, AUTONEG_DISABLE,   _1000_Full },
609                 /* Make TBI happy */
610                 { SPEED_1000,   DUPLEX_FULL, AUTONEG_ENABLE,    0xff }
611         }, *p;
612         unsigned char option;
613
614         option = ((idx < MAX_UNITS) && (idx >= 0)) ? media[idx] : 0xff;
615
616         if ((option != 0xff) && !idx && netif_msg_drv(&debug))
617                 printk(KERN_WARNING PFX "media option is deprecated.\n");
618
619         for (p = link_settings; p->media != 0xff; p++) {
620                 if (p->media == option)
621                         break;
622         }
623         *autoneg = p->autoneg;
624         *speed = p->speed;
625         *duplex = p->duplex;
626 }
627
628 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
629 {
630         struct rtl8169_private *tp = netdev_priv(dev);
631         void __iomem *ioaddr = tp->mmio_addr;
632         u8 options;
633
634         wol->wolopts = 0;
635
636 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
637         wol->supported = WAKE_ANY;
638
639         spin_lock_irq(&tp->lock);
640
641         options = RTL_R8(Config1);
642         if (!(options & PMEnable))
643                 goto out_unlock;
644
645         options = RTL_R8(Config3);
646         if (options & LinkUp)
647                 wol->wolopts |= WAKE_PHY;
648         if (options & MagicPacket)
649                 wol->wolopts |= WAKE_MAGIC;
650
651         options = RTL_R8(Config5);
652         if (options & UWF)
653                 wol->wolopts |= WAKE_UCAST;
654         if (options & BWF)
655                 wol->wolopts |= WAKE_BCAST;
656         if (options & MWF)
657                 wol->wolopts |= WAKE_MCAST;
658
659 out_unlock:
660         spin_unlock_irq(&tp->lock);
661 }
662
663 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
664 {
665         struct rtl8169_private *tp = netdev_priv(dev);
666         void __iomem *ioaddr = tp->mmio_addr;
667         int i;
668         static struct {
669                 u32 opt;
670                 u16 reg;
671                 u8  mask;
672         } cfg[] = {
673                 { WAKE_ANY,   Config1, PMEnable },
674                 { WAKE_PHY,   Config3, LinkUp },
675                 { WAKE_MAGIC, Config3, MagicPacket },
676                 { WAKE_UCAST, Config5, UWF },
677                 { WAKE_BCAST, Config5, BWF },
678                 { WAKE_MCAST, Config5, MWF },
679                 { WAKE_ANY,   Config5, LanWake }
680         };
681
682         spin_lock_irq(&tp->lock);
683
684         RTL_W8(Cfg9346, Cfg9346_Unlock);
685
686         for (i = 0; i < ARRAY_SIZE(cfg); i++) {
687                 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
688                 if (wol->wolopts & cfg[i].opt)
689                         options |= cfg[i].mask;
690                 RTL_W8(cfg[i].reg, options);
691         }
692
693         RTL_W8(Cfg9346, Cfg9346_Lock);
694
695         tp->wol_enabled = (wol->wolopts) ? 1 : 0;
696
697         spin_unlock_irq(&tp->lock);
698
699         return 0;
700 }
701
702 static void rtl8169_get_drvinfo(struct net_device *dev,
703                                 struct ethtool_drvinfo *info)
704 {
705         struct rtl8169_private *tp = netdev_priv(dev);
706
707         strcpy(info->driver, MODULENAME);
708         strcpy(info->version, RTL8169_VERSION);
709         strcpy(info->bus_info, pci_name(tp->pci_dev));
710 }
711
712 static int rtl8169_get_regs_len(struct net_device *dev)
713 {
714         return R8169_REGS_SIZE;
715 }
716
717 static int rtl8169_set_speed_tbi(struct net_device *dev,
718                                  u8 autoneg, u16 speed, u8 duplex)
719 {
720         struct rtl8169_private *tp = netdev_priv(dev);
721         void __iomem *ioaddr = tp->mmio_addr;
722         int ret = 0;
723         u32 reg;
724
725         reg = RTL_R32(TBICSR);
726         if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
727             (duplex == DUPLEX_FULL)) {
728                 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
729         } else if (autoneg == AUTONEG_ENABLE)
730                 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
731         else {
732                 if (netif_msg_link(tp)) {
733                         printk(KERN_WARNING "%s: "
734                                "incorrect speed setting refused in TBI mode\n",
735                                dev->name);
736                 }
737                 ret = -EOPNOTSUPP;
738         }
739
740         return ret;
741 }
742
743 static int rtl8169_set_speed_xmii(struct net_device *dev,
744                                   u8 autoneg, u16 speed, u8 duplex)
745 {
746         struct rtl8169_private *tp = netdev_priv(dev);
747         void __iomem *ioaddr = tp->mmio_addr;
748         int auto_nego, giga_ctrl;
749
750         auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
751         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
752                        ADVERTISE_100HALF | ADVERTISE_100FULL);
753         giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
754         giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
755
756         if (autoneg == AUTONEG_ENABLE) {
757                 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
758                               ADVERTISE_100HALF | ADVERTISE_100FULL);
759                 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
760         } else {
761                 if (speed == SPEED_10)
762                         auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
763                 else if (speed == SPEED_100)
764                         auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
765                 else if (speed == SPEED_1000)
766                         giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
767
768                 if (duplex == DUPLEX_HALF)
769                         auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
770
771                 if (duplex == DUPLEX_FULL)
772                         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
773
774                 /* This tweak comes straight from Realtek's driver. */
775                 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
776                     (tp->mac_version == RTL_GIGA_MAC_VER_13)) {
777                         auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
778                 }
779         }
780
781         /* The 8100e/8101e do Fast Ethernet only. */
782         if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
783             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
784             (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
785                 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
786                     netif_msg_link(tp)) {
787                         printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
788                                dev->name);
789                 }
790                 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
791         }
792
793         auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
794
795         tp->phy_auto_nego_reg = auto_nego;
796         tp->phy_1000_ctrl_reg = giga_ctrl;
797
798         mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
799         mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
800         mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
801         return 0;
802 }
803
804 static int rtl8169_set_speed(struct net_device *dev,
805                              u8 autoneg, u16 speed, u8 duplex)
806 {
807         struct rtl8169_private *tp = netdev_priv(dev);
808         int ret;
809
810         ret = tp->set_speed(dev, autoneg, speed, duplex);
811
812         if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
813                 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
814
815         return ret;
816 }
817
818 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
819 {
820         struct rtl8169_private *tp = netdev_priv(dev);
821         unsigned long flags;
822         int ret;
823
824         spin_lock_irqsave(&tp->lock, flags);
825         ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
826         spin_unlock_irqrestore(&tp->lock, flags);
827
828         return ret;
829 }
830
831 static u32 rtl8169_get_rx_csum(struct net_device *dev)
832 {
833         struct rtl8169_private *tp = netdev_priv(dev);
834
835         return tp->cp_cmd & RxChkSum;
836 }
837
838 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
839 {
840         struct rtl8169_private *tp = netdev_priv(dev);
841         void __iomem *ioaddr = tp->mmio_addr;
842         unsigned long flags;
843
844         spin_lock_irqsave(&tp->lock, flags);
845
846         if (data)
847                 tp->cp_cmd |= RxChkSum;
848         else
849                 tp->cp_cmd &= ~RxChkSum;
850
851         RTL_W16(CPlusCmd, tp->cp_cmd);
852         RTL_R16(CPlusCmd);
853
854         spin_unlock_irqrestore(&tp->lock, flags);
855
856         return 0;
857 }
858
859 #ifdef CONFIG_R8169_VLAN
860
861 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
862                                       struct sk_buff *skb)
863 {
864         return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
865                 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
866 }
867
868 static void rtl8169_vlan_rx_register(struct net_device *dev,
869                                      struct vlan_group *grp)
870 {
871         struct rtl8169_private *tp = netdev_priv(dev);
872         void __iomem *ioaddr = tp->mmio_addr;
873         unsigned long flags;
874
875         spin_lock_irqsave(&tp->lock, flags);
876         tp->vlgrp = grp;
877         if (tp->vlgrp)
878                 tp->cp_cmd |= RxVlan;
879         else
880                 tp->cp_cmd &= ~RxVlan;
881         RTL_W16(CPlusCmd, tp->cp_cmd);
882         RTL_R16(CPlusCmd);
883         spin_unlock_irqrestore(&tp->lock, flags);
884 }
885
886 static void rtl8169_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
887 {
888         struct rtl8169_private *tp = netdev_priv(dev);
889         unsigned long flags;
890
891         spin_lock_irqsave(&tp->lock, flags);
892         if (tp->vlgrp)
893                 tp->vlgrp->vlan_devices[vid] = NULL;
894         spin_unlock_irqrestore(&tp->lock, flags);
895 }
896
897 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
898                                struct sk_buff *skb)
899 {
900         u32 opts2 = le32_to_cpu(desc->opts2);
901         int ret;
902
903         if (tp->vlgrp && (opts2 & RxVlanTag)) {
904                 rtl8169_rx_hwaccel_skb(skb, tp->vlgrp,
905                                        swab16(opts2 & 0xffff));
906                 ret = 0;
907         } else
908                 ret = -1;
909         desc->opts2 = 0;
910         return ret;
911 }
912
913 #else /* !CONFIG_R8169_VLAN */
914
915 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
916                                       struct sk_buff *skb)
917 {
918         return 0;
919 }
920
921 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
922                                struct sk_buff *skb)
923 {
924         return -1;
925 }
926
927 #endif
928
929 static void rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
930 {
931         struct rtl8169_private *tp = netdev_priv(dev);
932         void __iomem *ioaddr = tp->mmio_addr;
933         u32 status;
934
935         cmd->supported =
936                 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
937         cmd->port = PORT_FIBRE;
938         cmd->transceiver = XCVR_INTERNAL;
939
940         status = RTL_R32(TBICSR);
941         cmd->advertising = (status & TBINwEnable) ?  ADVERTISED_Autoneg : 0;
942         cmd->autoneg = !!(status & TBINwEnable);
943
944         cmd->speed = SPEED_1000;
945         cmd->duplex = DUPLEX_FULL; /* Always set */
946 }
947
948 static void rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
949 {
950         struct rtl8169_private *tp = netdev_priv(dev);
951         void __iomem *ioaddr = tp->mmio_addr;
952         u8 status;
953
954         cmd->supported = SUPPORTED_10baseT_Half |
955                          SUPPORTED_10baseT_Full |
956                          SUPPORTED_100baseT_Half |
957                          SUPPORTED_100baseT_Full |
958                          SUPPORTED_1000baseT_Full |
959                          SUPPORTED_Autoneg |
960                          SUPPORTED_TP;
961
962         cmd->autoneg = 1;
963         cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
964
965         if (tp->phy_auto_nego_reg & ADVERTISE_10HALF)
966                 cmd->advertising |= ADVERTISED_10baseT_Half;
967         if (tp->phy_auto_nego_reg & ADVERTISE_10FULL)
968                 cmd->advertising |= ADVERTISED_10baseT_Full;
969         if (tp->phy_auto_nego_reg & ADVERTISE_100HALF)
970                 cmd->advertising |= ADVERTISED_100baseT_Half;
971         if (tp->phy_auto_nego_reg & ADVERTISE_100FULL)
972                 cmd->advertising |= ADVERTISED_100baseT_Full;
973         if (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL)
974                 cmd->advertising |= ADVERTISED_1000baseT_Full;
975
976         status = RTL_R8(PHYstatus);
977
978         if (status & _1000bpsF)
979                 cmd->speed = SPEED_1000;
980         else if (status & _100bps)
981                 cmd->speed = SPEED_100;
982         else if (status & _10bps)
983                 cmd->speed = SPEED_10;
984
985         if (status & TxFlowCtrl)
986                 cmd->advertising |= ADVERTISED_Asym_Pause;
987         if (status & RxFlowCtrl)
988                 cmd->advertising |= ADVERTISED_Pause;
989
990         cmd->duplex = ((status & _1000bpsF) || (status & FullDup)) ?
991                       DUPLEX_FULL : DUPLEX_HALF;
992 }
993
994 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
995 {
996         struct rtl8169_private *tp = netdev_priv(dev);
997         unsigned long flags;
998
999         spin_lock_irqsave(&tp->lock, flags);
1000
1001         tp->get_settings(dev, cmd);
1002
1003         spin_unlock_irqrestore(&tp->lock, flags);
1004         return 0;
1005 }
1006
1007 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1008                              void *p)
1009 {
1010         struct rtl8169_private *tp = netdev_priv(dev);
1011         unsigned long flags;
1012
1013         if (regs->len > R8169_REGS_SIZE)
1014                 regs->len = R8169_REGS_SIZE;
1015
1016         spin_lock_irqsave(&tp->lock, flags);
1017         memcpy_fromio(p, tp->mmio_addr, regs->len);
1018         spin_unlock_irqrestore(&tp->lock, flags);
1019 }
1020
1021 static u32 rtl8169_get_msglevel(struct net_device *dev)
1022 {
1023         struct rtl8169_private *tp = netdev_priv(dev);
1024
1025         return tp->msg_enable;
1026 }
1027
1028 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1029 {
1030         struct rtl8169_private *tp = netdev_priv(dev);
1031
1032         tp->msg_enable = value;
1033 }
1034
1035 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1036         "tx_packets",
1037         "rx_packets",
1038         "tx_errors",
1039         "rx_errors",
1040         "rx_missed",
1041         "align_errors",
1042         "tx_single_collisions",
1043         "tx_multi_collisions",
1044         "unicast",
1045         "broadcast",
1046         "multicast",
1047         "tx_aborted",
1048         "tx_underrun",
1049 };
1050
1051 struct rtl8169_counters {
1052         u64     tx_packets;
1053         u64     rx_packets;
1054         u64     tx_errors;
1055         u32     rx_errors;
1056         u16     rx_missed;
1057         u16     align_errors;
1058         u32     tx_one_collision;
1059         u32     tx_multi_collision;
1060         u64     rx_unicast;
1061         u64     rx_broadcast;
1062         u32     rx_multicast;
1063         u16     tx_aborted;
1064         u16     tx_underun;
1065 };
1066
1067 static int rtl8169_get_stats_count(struct net_device *dev)
1068 {
1069         return ARRAY_SIZE(rtl8169_gstrings);
1070 }
1071
1072 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1073                                       struct ethtool_stats *stats, u64 *data)
1074 {
1075         struct rtl8169_private *tp = netdev_priv(dev);
1076         void __iomem *ioaddr = tp->mmio_addr;
1077         struct rtl8169_counters *counters;
1078         dma_addr_t paddr;
1079         u32 cmd;
1080
1081         ASSERT_RTNL();
1082
1083         counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1084         if (!counters)
1085                 return;
1086
1087         RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1088         cmd = (u64)paddr & DMA_32BIT_MASK;
1089         RTL_W32(CounterAddrLow, cmd);
1090         RTL_W32(CounterAddrLow, cmd | CounterDump);
1091
1092         while (RTL_R32(CounterAddrLow) & CounterDump) {
1093                 if (msleep_interruptible(1))
1094                         break;
1095         }
1096
1097         RTL_W32(CounterAddrLow, 0);
1098         RTL_W32(CounterAddrHigh, 0);
1099
1100         data[0] = le64_to_cpu(counters->tx_packets);
1101         data[1] = le64_to_cpu(counters->rx_packets);
1102         data[2] = le64_to_cpu(counters->tx_errors);
1103         data[3] = le32_to_cpu(counters->rx_errors);
1104         data[4] = le16_to_cpu(counters->rx_missed);
1105         data[5] = le16_to_cpu(counters->align_errors);
1106         data[6] = le32_to_cpu(counters->tx_one_collision);
1107         data[7] = le32_to_cpu(counters->tx_multi_collision);
1108         data[8] = le64_to_cpu(counters->rx_unicast);
1109         data[9] = le64_to_cpu(counters->rx_broadcast);
1110         data[10] = le32_to_cpu(counters->rx_multicast);
1111         data[11] = le16_to_cpu(counters->tx_aborted);
1112         data[12] = le16_to_cpu(counters->tx_underun);
1113
1114         pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1115 }
1116
1117 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1118 {
1119         switch(stringset) {
1120         case ETH_SS_STATS:
1121                 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1122                 break;
1123         }
1124 }
1125
1126
1127 static const struct ethtool_ops rtl8169_ethtool_ops = {
1128         .get_drvinfo            = rtl8169_get_drvinfo,
1129         .get_regs_len           = rtl8169_get_regs_len,
1130         .get_link               = ethtool_op_get_link,
1131         .get_settings           = rtl8169_get_settings,
1132         .set_settings           = rtl8169_set_settings,
1133         .get_msglevel           = rtl8169_get_msglevel,
1134         .set_msglevel           = rtl8169_set_msglevel,
1135         .get_rx_csum            = rtl8169_get_rx_csum,
1136         .set_rx_csum            = rtl8169_set_rx_csum,
1137         .get_tx_csum            = ethtool_op_get_tx_csum,
1138         .set_tx_csum            = ethtool_op_set_tx_csum,
1139         .get_sg                 = ethtool_op_get_sg,
1140         .set_sg                 = ethtool_op_set_sg,
1141         .get_tso                = ethtool_op_get_tso,
1142         .set_tso                = ethtool_op_set_tso,
1143         .get_regs               = rtl8169_get_regs,
1144         .get_wol                = rtl8169_get_wol,
1145         .set_wol                = rtl8169_set_wol,
1146         .get_strings            = rtl8169_get_strings,
1147         .get_stats_count        = rtl8169_get_stats_count,
1148         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
1149         .get_perm_addr          = ethtool_op_get_perm_addr,
1150 };
1151
1152 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg, int bitnum,
1153                                        int bitval)
1154 {
1155         int val;
1156
1157         val = mdio_read(ioaddr, reg);
1158         val = (bitval == 1) ?
1159                 val | (bitval << bitnum) :  val & ~(0x0001 << bitnum);
1160         mdio_write(ioaddr, reg, val & 0xffff);
1161 }
1162
1163 static void rtl8169_get_mac_version(struct rtl8169_private *tp, void __iomem *ioaddr)
1164 {
1165         const struct {
1166                 u32 mask;
1167                 int mac_version;
1168         } mac_info[] = {
1169                 { 0x38800000,   RTL_GIGA_MAC_VER_15 },
1170                 { 0x38000000,   RTL_GIGA_MAC_VER_12 },
1171                 { 0x34000000,   RTL_GIGA_MAC_VER_13 },
1172                 { 0x30800000,   RTL_GIGA_MAC_VER_14 },
1173                 { 0x30000000,   RTL_GIGA_MAC_VER_11 },
1174                 { 0x18000000,   RTL_GIGA_MAC_VER_05 },
1175                 { 0x10000000,   RTL_GIGA_MAC_VER_04 },
1176                 { 0x04000000,   RTL_GIGA_MAC_VER_03 },
1177                 { 0x00800000,   RTL_GIGA_MAC_VER_02 },
1178                 { 0x00000000,   RTL_GIGA_MAC_VER_01 }   /* Catch-all */
1179         }, *p = mac_info;
1180         u32 reg;
1181
1182         reg = RTL_R32(TxConfig) & 0x7c800000;
1183         while ((reg & p->mask) != p->mask)
1184                 p++;
1185         tp->mac_version = p->mac_version;
1186 }
1187
1188 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1189 {
1190         dprintk("mac_version = 0x%02x\n", tp->mac_version);
1191 }
1192
1193 static void rtl8169_get_phy_version(struct rtl8169_private *tp, void __iomem *ioaddr)
1194 {
1195         const struct {
1196                 u16 mask;
1197                 u16 set;
1198                 int phy_version;
1199         } phy_info[] = {
1200                 { 0x000f, 0x0002, RTL_GIGA_PHY_VER_G },
1201                 { 0x000f, 0x0001, RTL_GIGA_PHY_VER_F },
1202                 { 0x000f, 0x0000, RTL_GIGA_PHY_VER_E },
1203                 { 0x0000, 0x0000, RTL_GIGA_PHY_VER_D } /* Catch-all */
1204         }, *p = phy_info;
1205         u16 reg;
1206
1207         reg = mdio_read(ioaddr, MII_PHYSID2) & 0xffff;
1208         while ((reg & p->mask) != p->set)
1209                 p++;
1210         tp->phy_version = p->phy_version;
1211 }
1212
1213 static void rtl8169_print_phy_version(struct rtl8169_private *tp)
1214 {
1215         struct {
1216                 int version;
1217                 char *msg;
1218                 u32 reg;
1219         } phy_print[] = {
1220                 { RTL_GIGA_PHY_VER_G, "RTL_GIGA_PHY_VER_G", 0x0002 },
1221                 { RTL_GIGA_PHY_VER_F, "RTL_GIGA_PHY_VER_F", 0x0001 },
1222                 { RTL_GIGA_PHY_VER_E, "RTL_GIGA_PHY_VER_E", 0x0000 },
1223                 { RTL_GIGA_PHY_VER_D, "RTL_GIGA_PHY_VER_D", 0x0000 },
1224                 { 0, NULL, 0x0000 }
1225         }, *p;
1226
1227         for (p = phy_print; p->msg; p++) {
1228                 if (tp->phy_version == p->version) {
1229                         dprintk("phy_version == %s (%04x)\n", p->msg, p->reg);
1230                         return;
1231                 }
1232         }
1233         dprintk("phy_version == Unknown\n");
1234 }
1235
1236 static void rtl8169_hw_phy_config(struct net_device *dev)
1237 {
1238         struct rtl8169_private *tp = netdev_priv(dev);
1239         void __iomem *ioaddr = tp->mmio_addr;
1240         struct {
1241                 u16 regs[5]; /* Beware of bit-sign propagation */
1242         } phy_magic[5] = { {
1243                 { 0x0000,       //w 4 15 12 0
1244                   0x00a1,       //w 3 15 0 00a1
1245                   0x0008,       //w 2 15 0 0008
1246                   0x1020,       //w 1 15 0 1020
1247                   0x1000 } },{  //w 0 15 0 1000
1248                 { 0x7000,       //w 4 15 12 7
1249                   0xff41,       //w 3 15 0 ff41
1250                   0xde60,       //w 2 15 0 de60
1251                   0x0140,       //w 1 15 0 0140
1252                   0x0077 } },{  //w 0 15 0 0077
1253                 { 0xa000,       //w 4 15 12 a
1254                   0xdf01,       //w 3 15 0 df01
1255                   0xdf20,       //w 2 15 0 df20
1256                   0xff95,       //w 1 15 0 ff95
1257                   0xfa00 } },{  //w 0 15 0 fa00
1258                 { 0xb000,       //w 4 15 12 b
1259                   0xff41,       //w 3 15 0 ff41
1260                   0xde20,       //w 2 15 0 de20
1261                   0x0140,       //w 1 15 0 0140
1262                   0x00bb } },{  //w 0 15 0 00bb
1263                 { 0xf000,       //w 4 15 12 f
1264                   0xdf01,       //w 3 15 0 df01
1265                   0xdf20,       //w 2 15 0 df20
1266                   0xff95,       //w 1 15 0 ff95
1267                   0xbf00 }      //w 0 15 0 bf00
1268                 }
1269         }, *p = phy_magic;
1270         int i;
1271
1272         rtl8169_print_mac_version(tp);
1273         rtl8169_print_phy_version(tp);
1274
1275         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1276                 return;
1277         if (tp->phy_version >= RTL_GIGA_PHY_VER_H)
1278                 return;
1279
1280         dprintk("MAC version != 0 && PHY version == 0 or 1\n");
1281         dprintk("Do final_reg2.cfg\n");
1282
1283         /* Shazam ! */
1284
1285         if (tp->mac_version == RTL_GIGA_MAC_VER_04) {
1286                 mdio_write(ioaddr, 31, 0x0001);
1287                 mdio_write(ioaddr,  9, 0x273a);
1288                 mdio_write(ioaddr, 14, 0x7bfb);
1289                 mdio_write(ioaddr, 27, 0x841e);
1290
1291                 mdio_write(ioaddr, 31, 0x0002);
1292                 mdio_write(ioaddr,  1, 0x90d0);
1293                 mdio_write(ioaddr, 31, 0x0000);
1294                 return;
1295         }
1296
1297         /* phy config for RTL8169s mac_version C chip */
1298         mdio_write(ioaddr, 31, 0x0001);                 //w 31 2 0 1
1299         mdio_write(ioaddr, 21, 0x1000);                 //w 21 15 0 1000
1300         mdio_write(ioaddr, 24, 0x65c7);                 //w 24 15 0 65c7
1301         rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0);   //w 4 11 11 0
1302
1303         for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1304                 int val, pos = 4;
1305
1306                 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1307                 mdio_write(ioaddr, pos, val);
1308                 while (--pos >= 0)
1309                         mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1310                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1311                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1312         }
1313         mdio_write(ioaddr, 31, 0x0000); //w 31 2 0 0
1314 }
1315
1316 static void rtl8169_phy_timer(unsigned long __opaque)
1317 {
1318         struct net_device *dev = (struct net_device *)__opaque;
1319         struct rtl8169_private *tp = netdev_priv(dev);
1320         struct timer_list *timer = &tp->timer;
1321         void __iomem *ioaddr = tp->mmio_addr;
1322         unsigned long timeout = RTL8169_PHY_TIMEOUT;
1323
1324         assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1325         assert(tp->phy_version < RTL_GIGA_PHY_VER_H);
1326
1327         if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1328                 return;
1329
1330         spin_lock_irq(&tp->lock);
1331
1332         if (tp->phy_reset_pending(ioaddr)) {
1333                 /*
1334                  * A busy loop could burn quite a few cycles on nowadays CPU.
1335                  * Let's delay the execution of the timer for a few ticks.
1336                  */
1337                 timeout = HZ/10;
1338                 goto out_mod_timer;
1339         }
1340
1341         if (tp->link_ok(ioaddr))
1342                 goto out_unlock;
1343
1344         if (netif_msg_link(tp))
1345                 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1346
1347         tp->phy_reset_enable(ioaddr);
1348
1349 out_mod_timer:
1350         mod_timer(timer, jiffies + timeout);
1351 out_unlock:
1352         spin_unlock_irq(&tp->lock);
1353 }
1354
1355 static inline void rtl8169_delete_timer(struct net_device *dev)
1356 {
1357         struct rtl8169_private *tp = netdev_priv(dev);
1358         struct timer_list *timer = &tp->timer;
1359
1360         if ((tp->mac_version <= RTL_GIGA_MAC_VER_01) ||
1361             (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1362                 return;
1363
1364         del_timer_sync(timer);
1365 }
1366
1367 static inline void rtl8169_request_timer(struct net_device *dev)
1368 {
1369         struct rtl8169_private *tp = netdev_priv(dev);
1370         struct timer_list *timer = &tp->timer;
1371
1372         if ((tp->mac_version <= RTL_GIGA_MAC_VER_01) ||
1373             (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1374                 return;
1375
1376         init_timer(timer);
1377         timer->expires = jiffies + RTL8169_PHY_TIMEOUT;
1378         timer->data = (unsigned long)(dev);
1379         timer->function = rtl8169_phy_timer;
1380         add_timer(timer);
1381 }
1382
1383 #ifdef CONFIG_NET_POLL_CONTROLLER
1384 /*
1385  * Polling 'interrupt' - used by things like netconsole to send skbs
1386  * without having to re-enable interrupts. It's not called while
1387  * the interrupt routine is executing.
1388  */
1389 static void rtl8169_netpoll(struct net_device *dev)
1390 {
1391         struct rtl8169_private *tp = netdev_priv(dev);
1392         struct pci_dev *pdev = tp->pci_dev;
1393
1394         disable_irq(pdev->irq);
1395         rtl8169_interrupt(pdev->irq, dev);
1396         enable_irq(pdev->irq);
1397 }
1398 #endif
1399
1400 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1401                                   void __iomem *ioaddr)
1402 {
1403         iounmap(ioaddr);
1404         pci_release_regions(pdev);
1405         pci_disable_device(pdev);
1406         free_netdev(dev);
1407 }
1408
1409 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1410 {
1411         void __iomem *ioaddr = tp->mmio_addr;
1412         static int board_idx = -1;
1413         u8 autoneg, duplex;
1414         u16 speed;
1415
1416         board_idx++;
1417
1418         rtl8169_hw_phy_config(dev);
1419
1420         dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1421         RTL_W8(0x82, 0x01);
1422
1423         if (tp->mac_version < RTL_GIGA_MAC_VER_03) {
1424                 dprintk("Set PCI Latency=0x40\n");
1425                 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1426         }
1427
1428         if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1429                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1430                 RTL_W8(0x82, 0x01);
1431                 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1432                 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1433         }
1434
1435         rtl8169_link_option(board_idx, &autoneg, &speed, &duplex);
1436
1437         rtl8169_set_speed(dev, autoneg, speed, duplex);
1438
1439         if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1440                 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1441 }
1442
1443 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1444 {
1445         struct rtl8169_private *tp = netdev_priv(dev);
1446         struct mii_ioctl_data *data = if_mii(ifr);
1447
1448         if (!netif_running(dev))
1449                 return -ENODEV;
1450
1451         switch (cmd) {
1452         case SIOCGMIIPHY:
1453                 data->phy_id = 32; /* Internal PHY */
1454                 return 0;
1455
1456         case SIOCGMIIREG:
1457                 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1458                 return 0;
1459
1460         case SIOCSMIIREG:
1461                 if (!capable(CAP_NET_ADMIN))
1462                         return -EPERM;
1463                 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1464                 return 0;
1465         }
1466         return -EOPNOTSUPP;
1467 }
1468
1469 static int __devinit
1470 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1471 {
1472         const unsigned int region = rtl_cfg_info[ent->driver_data].region;
1473         struct rtl8169_private *tp;
1474         struct net_device *dev;
1475         void __iomem *ioaddr;
1476         unsigned int i, pm_cap;
1477         int rc;
1478
1479         if (netif_msg_drv(&debug)) {
1480                 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1481                        MODULENAME, RTL8169_VERSION);
1482         }
1483
1484         dev = alloc_etherdev(sizeof (*tp));
1485         if (!dev) {
1486                 if (netif_msg_drv(&debug))
1487                         dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1488                 rc = -ENOMEM;
1489                 goto out;
1490         }
1491
1492         SET_MODULE_OWNER(dev);
1493         SET_NETDEV_DEV(dev, &pdev->dev);
1494         tp = netdev_priv(dev);
1495         tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1496
1497         /* enable device (incl. PCI PM wakeup and hotplug setup) */
1498         rc = pci_enable_device(pdev);
1499         if (rc < 0) {
1500                 if (netif_msg_probe(tp))
1501                         dev_err(&pdev->dev, "enable failure\n");
1502                 goto err_out_free_dev_1;
1503         }
1504
1505         rc = pci_set_mwi(pdev);
1506         if (rc < 0)
1507                 goto err_out_disable_2;
1508
1509         /* save power state before pci_enable_device overwrites it */
1510         pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
1511         if (pm_cap) {
1512                 u16 pwr_command, acpi_idle_state;
1513
1514                 pci_read_config_word(pdev, pm_cap + PCI_PM_CTRL, &pwr_command);
1515                 acpi_idle_state = pwr_command & PCI_PM_CTRL_STATE_MASK;
1516         } else {
1517                 if (netif_msg_probe(tp)) {
1518                         dev_err(&pdev->dev,
1519                                 "PowerManagement capability not found.\n");
1520                 }
1521         }
1522
1523         /* make sure PCI base addr 1 is MMIO */
1524         if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1525                 if (netif_msg_probe(tp)) {
1526                         dev_err(&pdev->dev,
1527                                 "region #%d not an MMIO resource, aborting\n",
1528                                 region);
1529                 }
1530                 rc = -ENODEV;
1531                 goto err_out_mwi_3;
1532         }
1533
1534         /* check for weird/broken PCI region reporting */
1535         if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1536                 if (netif_msg_probe(tp)) {
1537                         dev_err(&pdev->dev,
1538                                 "Invalid PCI region size(s), aborting\n");
1539                 }
1540                 rc = -ENODEV;
1541                 goto err_out_mwi_3;
1542         }
1543
1544         rc = pci_request_regions(pdev, MODULENAME);
1545         if (rc < 0) {
1546                 if (netif_msg_probe(tp))
1547                         dev_err(&pdev->dev, "could not request regions.\n");
1548                 goto err_out_mwi_3;
1549         }
1550
1551         tp->cp_cmd = PCIMulRW | RxChkSum;
1552
1553         if ((sizeof(dma_addr_t) > 4) &&
1554             !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1555                 tp->cp_cmd |= PCIDAC;
1556                 dev->features |= NETIF_F_HIGHDMA;
1557         } else {
1558                 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1559                 if (rc < 0) {
1560                         if (netif_msg_probe(tp)) {
1561                                 dev_err(&pdev->dev,
1562                                         "DMA configuration failed.\n");
1563                         }
1564                         goto err_out_free_res_4;
1565                 }
1566         }
1567
1568         pci_set_master(pdev);
1569
1570         /* ioremap MMIO region */
1571         ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1572         if (!ioaddr) {
1573                 if (netif_msg_probe(tp))
1574                         dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1575                 rc = -EIO;
1576                 goto err_out_free_res_4;
1577         }
1578
1579         /* Unneeded ? Don't mess with Mrs. Murphy. */
1580         rtl8169_irq_mask_and_ack(ioaddr);
1581
1582         /* Soft reset the chip. */
1583         RTL_W8(ChipCmd, CmdReset);
1584
1585         /* Check that the chip has finished the reset. */
1586         for (i = 100; i > 0; i--) {
1587                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1588                         break;
1589                 msleep_interruptible(1);
1590         }
1591
1592         /* Identify chip attached to board */
1593         rtl8169_get_mac_version(tp, ioaddr);
1594         rtl8169_get_phy_version(tp, ioaddr);
1595
1596         rtl8169_print_mac_version(tp);
1597         rtl8169_print_phy_version(tp);
1598
1599         for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--) {
1600                 if (tp->mac_version == rtl_chip_info[i].mac_version)
1601                         break;
1602         }
1603         if (i < 0) {
1604                 /* Unknown chip: assume array element #0, original RTL-8169 */
1605                 if (netif_msg_probe(tp)) {
1606                         dev_printk(KERN_DEBUG, &pdev->dev,
1607                                 "unknown chip version, assuming %s\n",
1608                                 rtl_chip_info[0].name);
1609                 }
1610                 i++;
1611         }
1612         tp->chipset = i;
1613
1614         RTL_W8(Cfg9346, Cfg9346_Unlock);
1615         RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1616         RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1617         RTL_W8(Cfg9346, Cfg9346_Lock);
1618
1619         if (RTL_R8(PHYstatus) & TBI_Enable) {
1620                 tp->set_speed = rtl8169_set_speed_tbi;
1621                 tp->get_settings = rtl8169_gset_tbi;
1622                 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1623                 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1624                 tp->link_ok = rtl8169_tbi_link_ok;
1625
1626                 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1627         } else {
1628                 tp->set_speed = rtl8169_set_speed_xmii;
1629                 tp->get_settings = rtl8169_gset_xmii;
1630                 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1631                 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1632                 tp->link_ok = rtl8169_xmii_link_ok;
1633
1634                 dev->do_ioctl = rtl8169_ioctl;
1635         }
1636
1637         /* Get MAC address.  FIXME: read EEPROM */
1638         for (i = 0; i < MAC_ADDR_LEN; i++)
1639                 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1640         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1641
1642         dev->open = rtl8169_open;
1643         dev->hard_start_xmit = rtl8169_start_xmit;
1644         dev->get_stats = rtl8169_get_stats;
1645         SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1646         dev->stop = rtl8169_close;
1647         dev->tx_timeout = rtl8169_tx_timeout;
1648         dev->set_multicast_list = rtl8169_set_rx_mode;
1649         dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1650         dev->irq = pdev->irq;
1651         dev->base_addr = (unsigned long) ioaddr;
1652         dev->change_mtu = rtl8169_change_mtu;
1653
1654 #ifdef CONFIG_R8169_NAPI
1655         dev->poll = rtl8169_poll;
1656         dev->weight = R8169_NAPI_WEIGHT;
1657 #endif
1658
1659 #ifdef CONFIG_R8169_VLAN
1660         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1661         dev->vlan_rx_register = rtl8169_vlan_rx_register;
1662         dev->vlan_rx_kill_vid = rtl8169_vlan_rx_kill_vid;
1663 #endif
1664
1665 #ifdef CONFIG_NET_POLL_CONTROLLER
1666         dev->poll_controller = rtl8169_netpoll;
1667 #endif
1668
1669         tp->intr_mask = 0xffff;
1670         tp->pci_dev = pdev;
1671         tp->mmio_addr = ioaddr;
1672         tp->align = rtl_cfg_info[ent->driver_data].align;
1673
1674         spin_lock_init(&tp->lock);
1675
1676         rc = register_netdev(dev);
1677         if (rc < 0)
1678                 goto err_out_unmap_5;
1679
1680         pci_set_drvdata(pdev, dev);
1681
1682         if (netif_msg_probe(tp)) {
1683                 printk(KERN_INFO "%s: %s at 0x%lx, "
1684                        "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1685                        "IRQ %d\n",
1686                        dev->name,
1687                        rtl_chip_info[tp->chipset].name,
1688                        dev->base_addr,
1689                        dev->dev_addr[0], dev->dev_addr[1],
1690                        dev->dev_addr[2], dev->dev_addr[3],
1691                        dev->dev_addr[4], dev->dev_addr[5], dev->irq);
1692         }
1693
1694         rtl8169_init_phy(dev, tp);
1695
1696 out:
1697         return rc;
1698
1699 err_out_unmap_5:
1700         iounmap(ioaddr);
1701 err_out_free_res_4:
1702         pci_release_regions(pdev);
1703 err_out_mwi_3:
1704         pci_clear_mwi(pdev);
1705 err_out_disable_2:
1706         pci_disable_device(pdev);
1707 err_out_free_dev_1:
1708         free_netdev(dev);
1709         goto out;
1710 }
1711
1712 static void __devexit
1713 rtl8169_remove_one(struct pci_dev *pdev)
1714 {
1715         struct net_device *dev = pci_get_drvdata(pdev);
1716         struct rtl8169_private *tp = netdev_priv(dev);
1717
1718         assert(dev != NULL);
1719         assert(tp != NULL);
1720
1721         unregister_netdev(dev);
1722         rtl8169_release_board(pdev, dev, tp->mmio_addr);
1723         pci_set_drvdata(pdev, NULL);
1724 }
1725
1726 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
1727                                   struct net_device *dev)
1728 {
1729         unsigned int mtu = dev->mtu;
1730
1731         tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1732 }
1733
1734 static int rtl8169_open(struct net_device *dev)
1735 {
1736         struct rtl8169_private *tp = netdev_priv(dev);
1737         struct pci_dev *pdev = tp->pci_dev;
1738         int retval;
1739
1740         rtl8169_set_rxbufsize(tp, dev);
1741
1742         retval =
1743             request_irq(dev->irq, rtl8169_interrupt, IRQF_SHARED, dev->name, dev);
1744         if (retval < 0)
1745                 goto out;
1746
1747         retval = -ENOMEM;
1748
1749         /*
1750          * Rx and Tx desscriptors needs 256 bytes alignment.
1751          * pci_alloc_consistent provides more.
1752          */
1753         tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
1754                                                &tp->TxPhyAddr);
1755         if (!tp->TxDescArray)
1756                 goto err_free_irq;
1757
1758         tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
1759                                                &tp->RxPhyAddr);
1760         if (!tp->RxDescArray)
1761                 goto err_free_tx;
1762
1763         retval = rtl8169_init_ring(dev);
1764         if (retval < 0)
1765                 goto err_free_rx;
1766
1767         INIT_WORK(&tp->task, NULL, dev);
1768
1769         rtl8169_hw_start(dev);
1770
1771         rtl8169_request_timer(dev);
1772
1773         rtl8169_check_link_status(dev, tp, tp->mmio_addr);
1774 out:
1775         return retval;
1776
1777 err_free_rx:
1778         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
1779                             tp->RxPhyAddr);
1780 err_free_tx:
1781         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
1782                             tp->TxPhyAddr);
1783 err_free_irq:
1784         free_irq(dev->irq, dev);
1785         goto out;
1786 }
1787
1788 static void rtl8169_hw_reset(void __iomem *ioaddr)
1789 {
1790         /* Disable interrupts */
1791         rtl8169_irq_mask_and_ack(ioaddr);
1792
1793         /* Reset the chipset */
1794         RTL_W8(ChipCmd, CmdReset);
1795
1796         /* PCI commit */
1797         RTL_R8(ChipCmd);
1798 }
1799
1800 static void
1801 rtl8169_hw_start(struct net_device *dev)
1802 {
1803         struct rtl8169_private *tp = netdev_priv(dev);
1804         void __iomem *ioaddr = tp->mmio_addr;
1805         struct pci_dev *pdev = tp->pci_dev;
1806         u32 i;
1807
1808         /* Soft reset the chip. */
1809         RTL_W8(ChipCmd, CmdReset);
1810
1811         /* Check that the chip has finished the reset. */
1812         for (i = 100; i > 0; i--) {
1813                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1814                         break;
1815                 msleep_interruptible(1);
1816         }
1817
1818         if (tp->mac_version == RTL_GIGA_MAC_VER_13) {
1819                 pci_write_config_word(pdev, 0x68, 0x00);
1820                 pci_write_config_word(pdev, 0x69, 0x08);
1821         }
1822
1823         /* Undocumented stuff. */
1824         if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
1825                 u16 cmd;
1826
1827                 /* Realtek's r1000_n.c driver uses '&& 0x01' here. Well... */
1828                 if ((RTL_R8(Config2) & 0x07) & 0x01)
1829                         RTL_W32(0x7c, 0x0007ffff);
1830
1831                 RTL_W32(0x7c, 0x0007ff00);
1832
1833                 pci_read_config_word(pdev, PCI_COMMAND, &cmd);
1834                 cmd = cmd & 0xef;
1835                 pci_write_config_word(pdev, PCI_COMMAND, cmd);
1836         }
1837
1838
1839         RTL_W8(Cfg9346, Cfg9346_Unlock);
1840         RTL_W8(EarlyTxThres, EarlyTxThld);
1841
1842         /* Low hurts. Let's disable the filtering. */
1843         RTL_W16(RxMaxSize, 16383);
1844
1845         /* Set Rx Config register */
1846         i = rtl8169_rx_config |
1847                 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1848         RTL_W32(RxConfig, i);
1849
1850         /* Set DMA burst size and Interframe Gap Time */
1851         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
1852                 (InterFrameGap << TxInterFrameGapShift));
1853
1854         tp->cp_cmd |= RTL_R16(CPlusCmd) | PCIMulRW;
1855
1856         if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
1857             (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
1858                 dprintk(KERN_INFO PFX "Set MAC Reg C+CR Offset 0xE0. "
1859                         "Bit-3 and bit-14 MUST be 1\n");
1860                 tp->cp_cmd |= (1 << 14);
1861         }
1862
1863         RTL_W16(CPlusCmd, tp->cp_cmd);
1864
1865         /*
1866          * Undocumented corner. Supposedly:
1867          * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
1868          */
1869         RTL_W16(IntrMitigate, 0x0000);
1870
1871         /*
1872          * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
1873          * register to be written before TxDescAddrLow to work.
1874          * Switching from MMIO to I/O access fixes the issue as well.
1875          */
1876         RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr >> 32));
1877         RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr & DMA_32BIT_MASK));
1878         RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr >> 32));
1879         RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr & DMA_32BIT_MASK));
1880         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1881         RTL_W8(Cfg9346, Cfg9346_Lock);
1882
1883         /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
1884         RTL_R8(IntrMask);
1885
1886         RTL_W32(RxMissed, 0);
1887
1888         rtl8169_set_rx_mode(dev);
1889
1890         /* no early-rx interrupts */
1891         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
1892
1893         /* Enable all known interrupts by setting the interrupt mask. */
1894         RTL_W16(IntrMask, rtl8169_intr_mask);
1895
1896         netif_start_queue(dev);
1897 }
1898
1899 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
1900 {
1901         struct rtl8169_private *tp = netdev_priv(dev);
1902         int ret = 0;
1903
1904         if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
1905                 return -EINVAL;
1906
1907         dev->mtu = new_mtu;
1908
1909         if (!netif_running(dev))
1910                 goto out;
1911
1912         rtl8169_down(dev);
1913
1914         rtl8169_set_rxbufsize(tp, dev);
1915
1916         ret = rtl8169_init_ring(dev);
1917         if (ret < 0)
1918                 goto out;
1919
1920         netif_poll_enable(dev);
1921
1922         rtl8169_hw_start(dev);
1923
1924         rtl8169_request_timer(dev);
1925
1926 out:
1927         return ret;
1928 }
1929
1930 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
1931 {
1932         desc->addr = 0x0badbadbadbadbadull;
1933         desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
1934 }
1935
1936 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
1937                                 struct sk_buff **sk_buff, struct RxDesc *desc)
1938 {
1939         struct pci_dev *pdev = tp->pci_dev;
1940
1941         pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
1942                          PCI_DMA_FROMDEVICE);
1943         dev_kfree_skb(*sk_buff);
1944         *sk_buff = NULL;
1945         rtl8169_make_unusable_by_asic(desc);
1946 }
1947
1948 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
1949 {
1950         u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
1951
1952         desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
1953 }
1954
1955 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
1956                                        u32 rx_buf_sz)
1957 {
1958         desc->addr = cpu_to_le64(mapping);
1959         wmb();
1960         rtl8169_mark_to_asic(desc, rx_buf_sz);
1961 }
1962
1963 static int rtl8169_alloc_rx_skb(struct pci_dev *pdev, struct sk_buff **sk_buff,
1964                                 struct RxDesc *desc, int rx_buf_sz,
1965                                 unsigned int align)
1966 {
1967         struct sk_buff *skb;
1968         dma_addr_t mapping;
1969         int ret = 0;
1970
1971         skb = dev_alloc_skb(rx_buf_sz + align);
1972         if (!skb)
1973                 goto err_out;
1974
1975         skb_reserve(skb, align);
1976         *sk_buff = skb;
1977
1978         mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
1979                                  PCI_DMA_FROMDEVICE);
1980
1981         rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
1982
1983 out:
1984         return ret;
1985
1986 err_out:
1987         ret = -ENOMEM;
1988         rtl8169_make_unusable_by_asic(desc);
1989         goto out;
1990 }
1991
1992 static void rtl8169_rx_clear(struct rtl8169_private *tp)
1993 {
1994         int i;
1995
1996         for (i = 0; i < NUM_RX_DESC; i++) {
1997                 if (tp->Rx_skbuff[i]) {
1998                         rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
1999                                             tp->RxDescArray + i);
2000                 }
2001         }
2002 }
2003
2004 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2005                            u32 start, u32 end)
2006 {
2007         u32 cur;
2008
2009         for (cur = start; end - cur > 0; cur++) {
2010                 int ret, i = cur % NUM_RX_DESC;
2011
2012                 if (tp->Rx_skbuff[i])
2013                         continue;
2014
2015                 ret = rtl8169_alloc_rx_skb(tp->pci_dev, tp->Rx_skbuff + i,
2016                         tp->RxDescArray + i, tp->rx_buf_sz, tp->align);
2017                 if (ret < 0)
2018                         break;
2019         }
2020         return cur - start;
2021 }
2022
2023 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2024 {
2025         desc->opts1 |= cpu_to_le32(RingEnd);
2026 }
2027
2028 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2029 {
2030         tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2031 }
2032
2033 static int rtl8169_init_ring(struct net_device *dev)
2034 {
2035         struct rtl8169_private *tp = netdev_priv(dev);
2036
2037         rtl8169_init_ring_indexes(tp);
2038
2039         memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2040         memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2041
2042         if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2043                 goto err_out;
2044
2045         rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2046
2047         return 0;
2048
2049 err_out:
2050         rtl8169_rx_clear(tp);
2051         return -ENOMEM;
2052 }
2053
2054 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2055                                  struct TxDesc *desc)
2056 {
2057         unsigned int len = tx_skb->len;
2058
2059         pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2060         desc->opts1 = 0x00;
2061         desc->opts2 = 0x00;
2062         desc->addr = 0x00;
2063         tx_skb->len = 0;
2064 }
2065
2066 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2067 {
2068         unsigned int i;
2069
2070         for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2071                 unsigned int entry = i % NUM_TX_DESC;
2072                 struct ring_info *tx_skb = tp->tx_skb + entry;
2073                 unsigned int len = tx_skb->len;
2074
2075                 if (len) {
2076                         struct sk_buff *skb = tx_skb->skb;
2077
2078                         rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2079                                              tp->TxDescArray + entry);
2080                         if (skb) {
2081                                 dev_kfree_skb(skb);
2082                                 tx_skb->skb = NULL;
2083                         }
2084                         tp->stats.tx_dropped++;
2085                 }
2086         }
2087         tp->cur_tx = tp->dirty_tx = 0;
2088 }
2089
2090 static void rtl8169_schedule_work(struct net_device *dev, void (*task)(void *))
2091 {
2092         struct rtl8169_private *tp = netdev_priv(dev);
2093
2094         PREPARE_WORK(&tp->task, task, dev);
2095         schedule_delayed_work(&tp->task, 4);
2096 }
2097
2098 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2099 {
2100         struct rtl8169_private *tp = netdev_priv(dev);
2101         void __iomem *ioaddr = tp->mmio_addr;
2102
2103         synchronize_irq(dev->irq);
2104
2105         /* Wait for any pending NAPI task to complete */
2106         netif_poll_disable(dev);
2107
2108         rtl8169_irq_mask_and_ack(ioaddr);
2109
2110         netif_poll_enable(dev);
2111 }
2112
2113 static void rtl8169_reinit_task(void *_data)
2114 {
2115         struct net_device *dev = _data;
2116         int ret;
2117
2118         if (netif_running(dev)) {
2119                 rtl8169_wait_for_quiescence(dev);
2120                 rtl8169_close(dev);
2121         }
2122
2123         ret = rtl8169_open(dev);
2124         if (unlikely(ret < 0)) {
2125                 if (net_ratelimit()) {
2126                         struct rtl8169_private *tp = netdev_priv(dev);
2127
2128                         if (netif_msg_drv(tp)) {
2129                                 printk(PFX KERN_ERR
2130                                        "%s: reinit failure (status = %d)."
2131                                        " Rescheduling.\n", dev->name, ret);
2132                         }
2133                 }
2134                 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2135         }
2136 }
2137
2138 static void rtl8169_reset_task(void *_data)
2139 {
2140         struct net_device *dev = _data;
2141         struct rtl8169_private *tp = netdev_priv(dev);
2142
2143         if (!netif_running(dev))
2144                 return;
2145
2146         rtl8169_wait_for_quiescence(dev);
2147
2148         rtl8169_rx_interrupt(dev, tp, tp->mmio_addr);
2149         rtl8169_tx_clear(tp);
2150
2151         if (tp->dirty_rx == tp->cur_rx) {
2152                 rtl8169_init_ring_indexes(tp);
2153                 rtl8169_hw_start(dev);
2154                 netif_wake_queue(dev);
2155         } else {
2156                 if (net_ratelimit()) {
2157                         struct rtl8169_private *tp = netdev_priv(dev);
2158
2159                         if (netif_msg_intr(tp)) {
2160                                 printk(PFX KERN_EMERG
2161                                        "%s: Rx buffers shortage\n", dev->name);
2162                         }
2163                 }
2164                 rtl8169_schedule_work(dev, rtl8169_reset_task);
2165         }
2166 }
2167
2168 static void rtl8169_tx_timeout(struct net_device *dev)
2169 {
2170         struct rtl8169_private *tp = netdev_priv(dev);
2171
2172         rtl8169_hw_reset(tp->mmio_addr);
2173
2174         /* Let's wait a bit while any (async) irq lands on */
2175         rtl8169_schedule_work(dev, rtl8169_reset_task);
2176 }
2177
2178 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2179                               u32 opts1)
2180 {
2181         struct skb_shared_info *info = skb_shinfo(skb);
2182         unsigned int cur_frag, entry;
2183         struct TxDesc *txd;
2184
2185         entry = tp->cur_tx;
2186         for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2187                 skb_frag_t *frag = info->frags + cur_frag;
2188                 dma_addr_t mapping;
2189                 u32 status, len;
2190                 void *addr;
2191
2192                 entry = (entry + 1) % NUM_TX_DESC;
2193
2194                 txd = tp->TxDescArray + entry;
2195                 len = frag->size;
2196                 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2197                 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2198
2199                 /* anti gcc 2.95.3 bugware (sic) */
2200                 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2201
2202                 txd->opts1 = cpu_to_le32(status);
2203                 txd->addr = cpu_to_le64(mapping);
2204
2205                 tp->tx_skb[entry].len = len;
2206         }
2207
2208         if (cur_frag) {
2209                 tp->tx_skb[entry].skb = skb;
2210                 txd->opts1 |= cpu_to_le32(LastFrag);
2211         }
2212
2213         return cur_frag;
2214 }
2215
2216 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2217 {
2218         if (dev->features & NETIF_F_TSO) {
2219                 u32 mss = skb_shinfo(skb)->gso_size;
2220
2221                 if (mss)
2222                         return LargeSend | ((mss & MSSMask) << MSSShift);
2223         }
2224         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2225                 const struct iphdr *ip = skb->nh.iph;
2226
2227                 if (ip->protocol == IPPROTO_TCP)
2228                         return IPCS | TCPCS;
2229                 else if (ip->protocol == IPPROTO_UDP)
2230                         return IPCS | UDPCS;
2231                 WARN_ON(1);     /* we need a WARN() */
2232         }
2233         return 0;
2234 }
2235
2236 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2237 {
2238         struct rtl8169_private *tp = netdev_priv(dev);
2239         unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2240         struct TxDesc *txd = tp->TxDescArray + entry;
2241         void __iomem *ioaddr = tp->mmio_addr;
2242         dma_addr_t mapping;
2243         u32 status, len;
2244         u32 opts1;
2245         int ret = NETDEV_TX_OK;
2246
2247         if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2248                 if (netif_msg_drv(tp)) {
2249                         printk(KERN_ERR
2250                                "%s: BUG! Tx Ring full when queue awake!\n",
2251                                dev->name);
2252                 }
2253                 goto err_stop;
2254         }
2255
2256         if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2257                 goto err_stop;
2258
2259         opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2260
2261         frags = rtl8169_xmit_frags(tp, skb, opts1);
2262         if (frags) {
2263                 len = skb_headlen(skb);
2264                 opts1 |= FirstFrag;
2265         } else {
2266                 len = skb->len;
2267
2268                 if (unlikely(len < ETH_ZLEN)) {
2269                         if (skb_padto(skb, ETH_ZLEN))
2270                                 goto err_update_stats;
2271                         len = ETH_ZLEN;
2272                 }
2273
2274                 opts1 |= FirstFrag | LastFrag;
2275                 tp->tx_skb[entry].skb = skb;
2276         }
2277
2278         mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2279
2280         tp->tx_skb[entry].len = len;
2281         txd->addr = cpu_to_le64(mapping);
2282         txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2283
2284         wmb();
2285
2286         /* anti gcc 2.95.3 bugware (sic) */
2287         status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2288         txd->opts1 = cpu_to_le32(status);
2289
2290         dev->trans_start = jiffies;
2291
2292         tp->cur_tx += frags + 1;
2293
2294         smp_wmb();
2295
2296         RTL_W8(TxPoll, 0x40);   /* set polling bit */
2297
2298         if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2299                 netif_stop_queue(dev);
2300                 smp_rmb();
2301                 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2302                         netif_wake_queue(dev);
2303         }
2304
2305 out:
2306         return ret;
2307
2308 err_stop:
2309         netif_stop_queue(dev);
2310         ret = NETDEV_TX_BUSY;
2311 err_update_stats:
2312         tp->stats.tx_dropped++;
2313         goto out;
2314 }
2315
2316 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2317 {
2318         struct rtl8169_private *tp = netdev_priv(dev);
2319         struct pci_dev *pdev = tp->pci_dev;
2320         void __iomem *ioaddr = tp->mmio_addr;
2321         u16 pci_status, pci_cmd;
2322
2323         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2324         pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2325
2326         if (netif_msg_intr(tp)) {
2327                 printk(KERN_ERR
2328                        "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2329                        dev->name, pci_cmd, pci_status);
2330         }
2331
2332         /*
2333          * The recovery sequence below admits a very elaborated explanation:
2334          * - it seems to work;
2335          * - I did not see what else could be done.
2336          *
2337          * Feel free to adjust to your needs.
2338          */
2339         pci_write_config_word(pdev, PCI_COMMAND,
2340                               pci_cmd | PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
2341
2342         pci_write_config_word(pdev, PCI_STATUS,
2343                 pci_status & (PCI_STATUS_DETECTED_PARITY |
2344                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2345                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2346
2347         /* The infamous DAC f*ckup only happens at boot time */
2348         if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2349                 if (netif_msg_intr(tp))
2350                         printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2351                 tp->cp_cmd &= ~PCIDAC;
2352                 RTL_W16(CPlusCmd, tp->cp_cmd);
2353                 dev->features &= ~NETIF_F_HIGHDMA;
2354                 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2355         }
2356
2357         rtl8169_hw_reset(ioaddr);
2358 }
2359
2360 static void
2361 rtl8169_tx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2362                      void __iomem *ioaddr)
2363 {
2364         unsigned int dirty_tx, tx_left;
2365
2366         assert(dev != NULL);
2367         assert(tp != NULL);
2368         assert(ioaddr != NULL);
2369
2370         dirty_tx = tp->dirty_tx;
2371         smp_rmb();
2372         tx_left = tp->cur_tx - dirty_tx;
2373
2374         while (tx_left > 0) {
2375                 unsigned int entry = dirty_tx % NUM_TX_DESC;
2376                 struct ring_info *tx_skb = tp->tx_skb + entry;
2377                 u32 len = tx_skb->len;
2378                 u32 status;
2379
2380                 rmb();
2381                 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2382                 if (status & DescOwn)
2383                         break;
2384
2385                 tp->stats.tx_bytes += len;
2386                 tp->stats.tx_packets++;
2387
2388                 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
2389
2390                 if (status & LastFrag) {
2391                         dev_kfree_skb_irq(tx_skb->skb);
2392                         tx_skb->skb = NULL;
2393                 }
2394                 dirty_tx++;
2395                 tx_left--;
2396         }
2397
2398         if (tp->dirty_tx != dirty_tx) {
2399                 tp->dirty_tx = dirty_tx;
2400                 smp_wmb();
2401                 if (netif_queue_stopped(dev) &&
2402                     (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
2403                         netif_wake_queue(dev);
2404                 }
2405         }
2406 }
2407
2408 static inline int rtl8169_fragmented_frame(u32 status)
2409 {
2410         return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2411 }
2412
2413 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2414 {
2415         u32 opts1 = le32_to_cpu(desc->opts1);
2416         u32 status = opts1 & RxProtoMask;
2417
2418         if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
2419             ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
2420             ((status == RxProtoIP) && !(opts1 & IPFail)))
2421                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2422         else
2423                 skb->ip_summed = CHECKSUM_NONE;
2424 }
2425
2426 static inline int rtl8169_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
2427                                       struct RxDesc *desc, int rx_buf_sz,
2428                                       unsigned int align)
2429 {
2430         int ret = -1;
2431
2432         if (pkt_size < rx_copybreak) {
2433                 struct sk_buff *skb;
2434
2435                 skb = dev_alloc_skb(pkt_size + align);
2436                 if (skb) {
2437                         skb_reserve(skb, align);
2438                         eth_copy_and_sum(skb, sk_buff[0]->data, pkt_size, 0);
2439                         *sk_buff = skb;
2440                         rtl8169_mark_to_asic(desc, rx_buf_sz);
2441                         ret = 0;
2442                 }
2443         }
2444         return ret;
2445 }
2446
2447 static int
2448 rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
2449                      void __iomem *ioaddr)
2450 {
2451         unsigned int cur_rx, rx_left;
2452         unsigned int delta, count;
2453
2454         assert(dev != NULL);
2455         assert(tp != NULL);
2456         assert(ioaddr != NULL);
2457
2458         cur_rx = tp->cur_rx;
2459         rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
2460         rx_left = rtl8169_rx_quota(rx_left, (u32) dev->quota);
2461
2462         for (; rx_left > 0; rx_left--, cur_rx++) {
2463                 unsigned int entry = cur_rx % NUM_RX_DESC;
2464                 struct RxDesc *desc = tp->RxDescArray + entry;
2465                 u32 status;
2466
2467                 rmb();
2468                 status = le32_to_cpu(desc->opts1);
2469
2470                 if (status & DescOwn)
2471                         break;
2472                 if (unlikely(status & RxRES)) {
2473                         if (netif_msg_rx_err(tp)) {
2474                                 printk(KERN_INFO
2475                                        "%s: Rx ERROR. status = %08x\n",
2476                                        dev->name, status);
2477                         }
2478                         tp->stats.rx_errors++;
2479                         if (status & (RxRWT | RxRUNT))
2480                                 tp->stats.rx_length_errors++;
2481                         if (status & RxCRC)
2482                                 tp->stats.rx_crc_errors++;
2483                         if (status & RxFOVF) {
2484                                 rtl8169_schedule_work(dev, rtl8169_reset_task);
2485                                 tp->stats.rx_fifo_errors++;
2486                         }
2487                         rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2488                 } else {
2489                         struct sk_buff *skb = tp->Rx_skbuff[entry];
2490                         int pkt_size = (status & 0x00001FFF) - 4;
2491                         void (*pci_action)(struct pci_dev *, dma_addr_t,
2492                                 size_t, int) = pci_dma_sync_single_for_device;
2493
2494                         /*
2495                          * The driver does not support incoming fragmented
2496                          * frames. They are seen as a symptom of over-mtu
2497                          * sized frames.
2498                          */
2499                         if (unlikely(rtl8169_fragmented_frame(status))) {
2500                                 tp->stats.rx_dropped++;
2501                                 tp->stats.rx_length_errors++;
2502                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2503                                 continue;
2504                         }
2505
2506                         rtl8169_rx_csum(skb, desc);
2507
2508                         pci_dma_sync_single_for_cpu(tp->pci_dev,
2509                                 le64_to_cpu(desc->addr), tp->rx_buf_sz,
2510                                 PCI_DMA_FROMDEVICE);
2511
2512                         if (rtl8169_try_rx_copy(&skb, pkt_size, desc,
2513                                                 tp->rx_buf_sz, tp->align)) {
2514                                 pci_action = pci_unmap_single;
2515                                 tp->Rx_skbuff[entry] = NULL;
2516                         }
2517
2518                         pci_action(tp->pci_dev, le64_to_cpu(desc->addr),
2519                                    tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
2520
2521                         skb->dev = dev;
2522                         skb_put(skb, pkt_size);
2523                         skb->protocol = eth_type_trans(skb, dev);
2524
2525                         if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
2526                                 rtl8169_rx_skb(skb);
2527
2528                         dev->last_rx = jiffies;
2529                         tp->stats.rx_bytes += pkt_size;
2530                         tp->stats.rx_packets++;
2531                 }
2532         }
2533
2534         count = cur_rx - tp->cur_rx;
2535         tp->cur_rx = cur_rx;
2536
2537         delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
2538         if (!delta && count && netif_msg_intr(tp))
2539                 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
2540         tp->dirty_rx += delta;
2541
2542         /*
2543          * FIXME: until there is periodic timer to try and refill the ring,
2544          * a temporary shortage may definitely kill the Rx process.
2545          * - disable the asic to try and avoid an overflow and kick it again
2546          *   after refill ?
2547          * - how do others driver handle this condition (Uh oh...).
2548          */
2549         if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
2550                 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
2551
2552         return count;
2553 }
2554
2555 /* The interrupt handler does all of the Rx thread work and cleans up after the Tx thread. */
2556 static irqreturn_t
2557 rtl8169_interrupt(int irq, void *dev_instance)
2558 {
2559         struct net_device *dev = (struct net_device *) dev_instance;
2560         struct rtl8169_private *tp = netdev_priv(dev);
2561         int boguscnt = max_interrupt_work;
2562         void __iomem *ioaddr = tp->mmio_addr;
2563         int status;
2564         int handled = 0;
2565
2566         do {
2567                 status = RTL_R16(IntrStatus);
2568
2569                 /* hotplug/major error/no more work/shared irq */
2570                 if ((status == 0xFFFF) || !status)
2571                         break;
2572
2573                 handled = 1;
2574
2575                 if (unlikely(!netif_running(dev))) {
2576                         rtl8169_asic_down(ioaddr);
2577                         goto out;
2578                 }
2579
2580                 status &= tp->intr_mask;
2581                 RTL_W16(IntrStatus,
2582                         (status & RxFIFOOver) ? (status | RxOverflow) : status);
2583
2584                 if (!(status & rtl8169_intr_mask))
2585                         break;
2586
2587                 if (unlikely(status & SYSErr)) {
2588                         rtl8169_pcierr_interrupt(dev);
2589                         break;
2590                 }
2591
2592                 if (status & LinkChg)
2593                         rtl8169_check_link_status(dev, tp, ioaddr);
2594
2595 #ifdef CONFIG_R8169_NAPI
2596                 RTL_W16(IntrMask, rtl8169_intr_mask & ~rtl8169_napi_event);
2597                 tp->intr_mask = ~rtl8169_napi_event;
2598
2599                 if (likely(netif_rx_schedule_prep(dev)))
2600                         __netif_rx_schedule(dev);
2601                 else if (netif_msg_intr(tp)) {
2602                         printk(KERN_INFO "%s: interrupt %04x taken in poll\n",
2603                                dev->name, status);
2604                 }
2605                 break;
2606 #else
2607                 /* Rx interrupt */
2608                 if (status & (RxOK | RxOverflow | RxFIFOOver)) {
2609                         rtl8169_rx_interrupt(dev, tp, ioaddr);
2610                 }
2611                 /* Tx interrupt */
2612                 if (status & (TxOK | TxErr))
2613                         rtl8169_tx_interrupt(dev, tp, ioaddr);
2614 #endif
2615
2616                 boguscnt--;
2617         } while (boguscnt > 0);
2618
2619         if (boguscnt <= 0) {
2620                 if (netif_msg_intr(tp) && net_ratelimit() ) {
2621                         printk(KERN_WARNING
2622                                "%s: Too much work at interrupt!\n", dev->name);
2623                 }
2624                 /* Clear all interrupt sources. */
2625                 RTL_W16(IntrStatus, 0xffff);
2626         }
2627 out:
2628         return IRQ_RETVAL(handled);
2629 }
2630
2631 #ifdef CONFIG_R8169_NAPI
2632 static int rtl8169_poll(struct net_device *dev, int *budget)
2633 {
2634         unsigned int work_done, work_to_do = min(*budget, dev->quota);
2635         struct rtl8169_private *tp = netdev_priv(dev);
2636         void __iomem *ioaddr = tp->mmio_addr;
2637
2638         work_done = rtl8169_rx_interrupt(dev, tp, ioaddr);
2639         rtl8169_tx_interrupt(dev, tp, ioaddr);
2640
2641         *budget -= work_done;
2642         dev->quota -= work_done;
2643
2644         if (work_done < work_to_do) {
2645                 netif_rx_complete(dev);
2646                 tp->intr_mask = 0xffff;
2647                 /*
2648                  * 20040426: the barrier is not strictly required but the
2649                  * behavior of the irq handler could be less predictable
2650                  * without it. Btw, the lack of flush for the posted pci
2651                  * write is safe - FR
2652                  */
2653                 smp_wmb();
2654                 RTL_W16(IntrMask, rtl8169_intr_mask);
2655         }
2656
2657         return (work_done >= work_to_do);
2658 }
2659 #endif
2660
2661 static void rtl8169_down(struct net_device *dev)
2662 {
2663         struct rtl8169_private *tp = netdev_priv(dev);
2664         void __iomem *ioaddr = tp->mmio_addr;
2665         unsigned int poll_locked = 0;
2666         unsigned int intrmask;
2667
2668         rtl8169_delete_timer(dev);
2669
2670         netif_stop_queue(dev);
2671
2672         flush_scheduled_work();
2673
2674 core_down:
2675         spin_lock_irq(&tp->lock);
2676
2677         rtl8169_asic_down(ioaddr);
2678
2679         /* Update the error counts. */
2680         tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2681         RTL_W32(RxMissed, 0);
2682
2683         spin_unlock_irq(&tp->lock);
2684
2685         synchronize_irq(dev->irq);
2686
2687         if (!poll_locked) {
2688                 netif_poll_disable(dev);
2689                 poll_locked++;
2690         }
2691
2692         /* Give a racing hard_start_xmit a few cycles to complete. */
2693         synchronize_sched();  /* FIXME: should this be synchronize_irq()? */
2694
2695         /*
2696          * And now for the 50k$ question: are IRQ disabled or not ?
2697          *
2698          * Two paths lead here:
2699          * 1) dev->close
2700          *    -> netif_running() is available to sync the current code and the
2701          *       IRQ handler. See rtl8169_interrupt for details.
2702          * 2) dev->change_mtu
2703          *    -> rtl8169_poll can not be issued again and re-enable the
2704          *       interruptions. Let's simply issue the IRQ down sequence again.
2705          *
2706          * No loop if hotpluged or major error (0xffff).
2707          */
2708         intrmask = RTL_R16(IntrMask);
2709         if (intrmask && (intrmask != 0xffff))
2710                 goto core_down;
2711
2712         rtl8169_tx_clear(tp);
2713
2714         rtl8169_rx_clear(tp);
2715 }
2716
2717 static int rtl8169_close(struct net_device *dev)
2718 {
2719         struct rtl8169_private *tp = netdev_priv(dev);
2720         struct pci_dev *pdev = tp->pci_dev;
2721
2722         rtl8169_down(dev);
2723
2724         free_irq(dev->irq, dev);
2725
2726         netif_poll_enable(dev);
2727
2728         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2729                             tp->RxPhyAddr);
2730         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2731                             tp->TxPhyAddr);
2732         tp->TxDescArray = NULL;
2733         tp->RxDescArray = NULL;
2734
2735         return 0;
2736 }
2737
2738 static void
2739 rtl8169_set_rx_mode(struct net_device *dev)
2740 {
2741         struct rtl8169_private *tp = netdev_priv(dev);
2742         void __iomem *ioaddr = tp->mmio_addr;
2743         unsigned long flags;
2744         u32 mc_filter[2];       /* Multicast hash filter */
2745         int i, rx_mode;
2746         u32 tmp = 0;
2747
2748         if (dev->flags & IFF_PROMISC) {
2749                 /* Unconditionally log net taps. */
2750                 if (netif_msg_link(tp)) {
2751                         printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2752                                dev->name);
2753                 }
2754                 rx_mode =
2755                     AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2756                     AcceptAllPhys;
2757                 mc_filter[1] = mc_filter[0] = 0xffffffff;
2758         } else if ((dev->mc_count > multicast_filter_limit)
2759                    || (dev->flags & IFF_ALLMULTI)) {
2760                 /* Too many to filter perfectly -- accept all multicasts. */
2761                 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2762                 mc_filter[1] = mc_filter[0] = 0xffffffff;
2763         } else {
2764                 struct dev_mc_list *mclist;
2765                 rx_mode = AcceptBroadcast | AcceptMyPhys;
2766                 mc_filter[1] = mc_filter[0] = 0;
2767                 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2768                      i++, mclist = mclist->next) {
2769                         int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2770                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2771                         rx_mode |= AcceptMulticast;
2772                 }
2773         }
2774
2775         spin_lock_irqsave(&tp->lock, flags);
2776
2777         tmp = rtl8169_rx_config | rx_mode |
2778               (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2779
2780         if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
2781             (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
2782             (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2783             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
2784             (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
2785                 mc_filter[0] = 0xffffffff;
2786                 mc_filter[1] = 0xffffffff;
2787         }
2788
2789         RTL_W32(RxConfig, tmp);
2790         RTL_W32(MAR0 + 0, mc_filter[0]);
2791         RTL_W32(MAR0 + 4, mc_filter[1]);
2792
2793         spin_unlock_irqrestore(&tp->lock, flags);
2794 }
2795
2796 /**
2797  *  rtl8169_get_stats - Get rtl8169 read/write statistics
2798  *  @dev: The Ethernet Device to get statistics for
2799  *
2800  *  Get TX/RX statistics for rtl8169
2801  */
2802 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
2803 {
2804         struct rtl8169_private *tp = netdev_priv(dev);
2805         void __iomem *ioaddr = tp->mmio_addr;
2806         unsigned long flags;
2807
2808         if (netif_running(dev)) {
2809                 spin_lock_irqsave(&tp->lock, flags);
2810                 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2811                 RTL_W32(RxMissed, 0);
2812                 spin_unlock_irqrestore(&tp->lock, flags);
2813         }
2814
2815         return &tp->stats;
2816 }
2817
2818 #ifdef CONFIG_PM
2819
2820 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
2821 {
2822         struct net_device *dev = pci_get_drvdata(pdev);
2823         struct rtl8169_private *tp = netdev_priv(dev);
2824         void __iomem *ioaddr = tp->mmio_addr;
2825
2826         if (!netif_running(dev))
2827                 goto out;
2828
2829         netif_device_detach(dev);
2830         netif_stop_queue(dev);
2831
2832         spin_lock_irq(&tp->lock);
2833
2834         rtl8169_asic_down(ioaddr);
2835
2836         tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2837         RTL_W32(RxMissed, 0);
2838
2839         spin_unlock_irq(&tp->lock);
2840
2841         pci_save_state(pdev);
2842         pci_enable_wake(pdev, pci_choose_state(pdev, state), tp->wol_enabled);
2843         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2844 out:
2845         return 0;
2846 }
2847
2848 static int rtl8169_resume(struct pci_dev *pdev)
2849 {
2850         struct net_device *dev = pci_get_drvdata(pdev);
2851
2852         if (!netif_running(dev))
2853                 goto out;
2854
2855         netif_device_attach(dev);
2856
2857         pci_set_power_state(pdev, PCI_D0);
2858         pci_restore_state(pdev);
2859         pci_enable_wake(pdev, PCI_D0, 0);
2860
2861         rtl8169_schedule_work(dev, rtl8169_reset_task);
2862 out:
2863         return 0;
2864 }
2865
2866 #endif /* CONFIG_PM */
2867
2868 static struct pci_driver rtl8169_pci_driver = {
2869         .name           = MODULENAME,
2870         .id_table       = rtl8169_pci_tbl,
2871         .probe          = rtl8169_init_one,
2872         .remove         = __devexit_p(rtl8169_remove_one),
2873 #ifdef CONFIG_PM
2874         .suspend        = rtl8169_suspend,
2875         .resume         = rtl8169_resume,
2876 #endif
2877 };
2878
2879 static int __init
2880 rtl8169_init_module(void)
2881 {
2882         return pci_register_driver(&rtl8169_pci_driver);
2883 }
2884
2885 static void __exit
2886 rtl8169_cleanup_module(void)
2887 {
2888         pci_unregister_driver(&rtl8169_pci_driver);
2889 }
2890
2891 module_init(rtl8169_init_module);
2892 module_exit(rtl8169_cleanup_module);