3 8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux.
5 Maintained by Jeff Garzik <jgarzik@pobox.com>
6 Copyright 2000-2002 Jeff Garzik
8 Much code comes from Donald Becker's rtl8139.c driver,
9 versions 1.13 and older. This driver was originally based
10 on rtl8139.c version 1.07. Header of rtl8139.c version 1.13:
14 Written 1997-2001 by Donald Becker.
15 This software may be used and distributed according to the
16 terms of the GNU General Public License (GPL), incorporated
17 herein by reference. Drivers based on or derived from this
18 code fall under the GPL and must retain the authorship,
19 copyright and license notice. This file is not a complete
20 program and may only be used when the entire operating
21 system is licensed under the GPL.
23 This driver is for boards based on the RTL8129 and RTL8139
26 The author may be reached as becker@scyld.com, or C/O Scyld
27 Computing Corporation 410 Severn Ave., Suite 210 Annapolis
30 Support and updates available at
31 http://www.scyld.com/network/rtl8139.html
33 Twister-tuning table provided by Kinston
34 <shangh@realtek.com.tw>.
38 This software may be used and distributed according to the terms
39 of the GNU General Public License, incorporated herein by reference.
43 Donald Becker - he wrote the original driver, kudos to him!
44 (but please don't e-mail him for support, this isn't his driver)
46 Tigran Aivazian - bug fixes, skbuff free cleanup
48 Martin Mares - suggestions for PCI cleanup
50 David S. Miller - PCI DMA and softnet updates
52 Ernst Gill - fixes ported from BSD driver
54 Daniel Kobras - identified specific locations of
55 posted MMIO write bugginess
57 Gerard Sharp - bug fix, testing and feedback
59 David Ford - Rx ring wrap fix
61 Dan DeMaggio - swapped RTL8139 cards with me, and allowed me
62 to find and fix a crucial bug on older chipsets.
64 Donald Becker/Chris Butterworth/Marcus Westergren -
65 Noticed various Rx packet size-related buglets.
67 Santiago Garcia Mantinan - testing and feedback
69 Jens David - 2.2.x kernel backports
71 Martin Dennett - incredibly helpful insight on undocumented
72 features of the 8139 chips
74 Jean-Jacques Michel - bug fix
76 Tobias Ringström - Rx interrupt status checking suggestion
78 Andrew Morton - Clear blocked signals, avoid
79 buffer overrun setting current->comm.
81 Kalle Olavi Niemitalo - Wake-on-LAN ioctls
83 Robert Kuebel - Save kernel thread from dying on any signal.
85 Submitting bug reports:
87 "rtl8139-diag -mmmaaavvveefN" output
88 enable RTL8139_DEBUG below, and look at 'dmesg' or kernel log
92 #define DRV_NAME "8139too"
93 #define DRV_VERSION "0.9.27"
96 #include <linux/config.h>
97 #include <linux/module.h>
98 #include <linux/kernel.h>
99 #include <linux/compiler.h>
100 #include <linux/pci.h>
101 #include <linux/init.h>
102 #include <linux/ioport.h>
103 #include <linux/netdevice.h>
104 #include <linux/etherdevice.h>
105 #include <linux/rtnetlink.h>
106 #include <linux/delay.h>
107 #include <linux/ethtool.h>
108 #include <linux/mii.h>
109 #include <linux/completion.h>
110 #include <linux/crc32.h>
112 #include <asm/uaccess.h>
115 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
116 #define PFX DRV_NAME ": "
118 /* Default Message level */
119 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
124 /* enable PIO instead of MMIO, if CONFIG_8139TOO_PIO is selected */
125 #ifdef CONFIG_8139TOO_PIO
129 /* define to 1 to enable copious debugging info */
132 /* define to 1 to disable lightweight runtime debugging checks */
133 #undef RTL8139_NDEBUG
137 /* note: prints function name for you */
138 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
140 # define DPRINTK(fmt, args...)
143 #ifdef RTL8139_NDEBUG
144 # define assert(expr) do {} while (0)
146 # define assert(expr) \
147 if(unlikely(!(expr))) { \
148 printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
149 #expr,__FILE__,__FUNCTION__,__LINE__); \
154 /* A few user-configurable values. */
157 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
158 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
160 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
161 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
162 static int multicast_filter_limit = 32;
164 /* bitmapped message enable number */
165 static int debug = -1;
169 * Warning: 64K ring has hardware issues and may lock up.
171 #if defined(CONFIG_SH_DREAMCAST)
172 #define RX_BUF_IDX 1 /* 16K ring */
174 #define RX_BUF_IDX 2 /* 32K ring */
176 #define RX_BUF_LEN (8192 << RX_BUF_IDX)
177 #define RX_BUF_PAD 16
178 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
180 #if RX_BUF_LEN == 65536
181 #define RX_BUF_TOT_LEN RX_BUF_LEN
183 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
186 /* Number of Tx descriptor registers. */
187 #define NUM_TX_DESC 4
189 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
190 #define MAX_ETH_FRAME_SIZE 1536
192 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
193 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
194 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
196 /* PCI Tuning Parameters
197 Threshold is bytes transferred to chip before transmission starts. */
198 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
200 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
201 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
202 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */
203 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
204 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */
206 /* Operational parameters that usually are not changed. */
207 /* Time in jiffies before concluding the transmitter is hung. */
208 #define TX_TIMEOUT (6*HZ)
212 HAS_MII_XCVR = 0x010000,
213 HAS_CHIP_XCVR = 0x020000,
214 HAS_LNK_CHNG = 0x040000,
217 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */
218 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */
219 #define RTL_MIN_IO_SIZE 0x80
220 #define RTL8139B_IO_SIZE 256
222 #define RTL8129_CAPS HAS_MII_XCVR
223 #define RTL8139_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG
231 /* indexed by board_t, above */
235 } board_info[] __devinitdata = {
236 { "RealTek RTL8139", RTL8139_CAPS },
237 { "RealTek RTL8129", RTL8129_CAPS },
241 static struct pci_device_id rtl8139_pci_tbl[] = {
242 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
243 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
244 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
245 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
246 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
247 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
248 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
249 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
250 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
251 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
252 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
253 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
254 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
255 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
256 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
257 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
258 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
259 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
260 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
262 #ifdef CONFIG_SH_SECUREEDGE5410
263 /* Bogus 8139 silicon reports 8129 without external PROM :-( */
264 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
266 #ifdef CONFIG_8139TOO_8129
267 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 },
270 /* some crazy cards report invalid vendor ids like
271 * 0x0001 here. The other ids are valid and constant,
272 * so we simply don't match on the main vendor id.
274 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 },
275 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 },
276 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 },
280 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl);
283 const char str[ETH_GSTRING_LEN];
284 } ethtool_stats_keys[] = {
288 { "rx_lost_in_ring" },
291 /* The rest of these values should never change. */
293 /* Symbolic offsets to registers. */
294 enum RTL8139_registers {
295 MAC0 = 0, /* Ethernet hardware address. */
296 MAR0 = 8, /* Multicast filter. */
297 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
298 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
307 Timer = 0x48, /* A general-purpose counter. */
308 RxMissed = 0x4C, /* 24 bits valid, write clears. */
315 Config4 = 0x5A, /* absent on RTL-8139A */
319 BasicModeCtrl = 0x62,
320 BasicModeStatus = 0x64,
323 NWayExpansion = 0x6A,
324 /* Undocumented registers, but required for proper operation. */
325 FIFOTMS = 0x70, /* FIFO Control and test. */
326 CSCR = 0x74, /* Chip Status and Configuration Register. */
328 PARA7c = 0x7c, /* Magic transceiver parameter register. */
329 Config5 = 0xD8, /* absent on RTL-8139A */
333 MultiIntrClear = 0xF000,
335 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
345 /* Interrupt register bits, using my own meaningful names. */
346 enum IntrStatusBits {
357 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
364 TxOutOfWindow = 0x20000000,
365 TxAborted = 0x40000000,
366 TxCarrierLost = 0x80000000,
369 RxMulticast = 0x8000,
371 RxBroadcast = 0x2000,
372 RxBadSymbol = 0x0020,
380 /* Bits in RxConfig. */
384 AcceptBroadcast = 0x08,
385 AcceptMulticast = 0x04,
387 AcceptAllPhys = 0x01,
390 /* Bits in TxConfig. */
391 enum tx_config_bits {
393 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
395 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
396 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
397 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
398 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
400 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
401 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
402 TxClearAbt = (1 << 0), /* Clear abort (WO) */
403 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
404 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
406 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
409 /* Bits in Config1 */
411 Cfg1_PM_Enable = 0x01,
412 Cfg1_VPD_Enable = 0x02,
415 LWAKE = 0x10, /* not on 8139, 8139A */
416 Cfg1_Driver_Load = 0x20,
419 SLEEP = (1 << 1), /* only on 8139, 8139A */
420 PWRDN = (1 << 0), /* only on 8139, 8139A */
423 /* Bits in Config3 */
425 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
426 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
427 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
428 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
429 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
430 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
431 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
432 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
435 /* Bits in Config4 */
437 LWPTN = (1 << 2), /* not on 8139, 8139A */
440 /* Bits in Config5 */
442 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
443 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
444 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
445 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
446 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
447 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
448 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
452 /* rx fifo threshold */
454 RxCfgFIFONone = (7 << RxCfgFIFOShift),
458 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
460 /* rx ring buffer length */
462 RxCfgRcv16K = (1 << 11),
463 RxCfgRcv32K = (1 << 12),
464 RxCfgRcv64K = (1 << 11) | (1 << 12),
466 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
470 /* Twister tuning parameters from RealTek.
471 Completely undocumented, but required to tune bad links on some boards. */
473 CSCR_LinkOKBit = 0x0400,
474 CSCR_LinkChangeBit = 0x0800,
475 CSCR_LinkStatusBits = 0x0f000,
476 CSCR_LinkDownOffCmd = 0x003c0,
477 CSCR_LinkDownCmd = 0x0f3c0,
482 Cfg9346_Unlock = 0xC0,
499 HasHltClk = (1 << 0),
503 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
504 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
505 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
507 /* directly indexed by chip_t, above */
508 const static struct {
510 u32 version; /* from RTL8139C/RTL8139D docs */
512 } rtl_chip_info[] = {
514 HW_REVID(1, 0, 0, 0, 0, 0, 0),
519 HW_REVID(1, 1, 0, 0, 0, 0, 0),
524 HW_REVID(1, 1, 1, 0, 0, 0, 0),
525 HasHltClk, /* XXX undocumented? */
529 HW_REVID(1, 1, 1, 0, 0, 1, 0),
530 HasHltClk, /* XXX undocumented? */
534 HW_REVID(1, 1, 1, 1, 0, 0, 0),
539 HW_REVID(1, 1, 1, 1, 1, 0, 0),
544 HW_REVID(1, 1, 1, 0, 1, 0, 0),
549 HW_REVID(1, 1, 1, 1, 0, 1, 0),
554 HW_REVID(1, 1, 1, 0, 1, 0, 1),
559 HW_REVID(1, 1, 1, 0, 1, 1, 1),
564 struct rtl_extra_stats {
565 unsigned long early_rx;
566 unsigned long tx_buf_mapped;
567 unsigned long tx_timeouts;
568 unsigned long rx_lost_in_ring;
571 struct rtl8139_private {
574 struct pci_dev *pci_dev;
576 struct net_device_stats stats;
577 unsigned char *rx_ring;
578 unsigned int cur_rx; /* Index into the Rx buffer of next Rx pkt. */
579 unsigned int tx_flag;
580 unsigned long cur_tx;
581 unsigned long dirty_tx;
582 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
583 unsigned char *tx_bufs; /* Tx bounce buffer region. */
584 dma_addr_t rx_ring_dma;
585 dma_addr_t tx_bufs_dma;
586 signed char phys[4]; /* MII device addresses. */
587 char twistie, twist_row, twist_col; /* Twister tune state. */
588 unsigned int default_port:4; /* Last dev->if_port value. */
593 wait_queue_head_t thr_wait;
594 struct completion thr_exited;
596 struct rtl_extra_stats xstats;
598 struct mii_if_info mii;
599 unsigned int regs_len;
600 unsigned long fifo_copy_timeout;
603 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
604 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
605 MODULE_LICENSE("GPL");
606 MODULE_VERSION(DRV_VERSION);
608 module_param(multicast_filter_limit, int, 0);
609 module_param_array(media, int, NULL, 0);
610 module_param_array(full_duplex, int, NULL, 0);
611 module_param(debug, int, 0);
612 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
613 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
614 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
615 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
617 static int read_eeprom (void *ioaddr, int location, int addr_len);
618 static int rtl8139_open (struct net_device *dev);
619 static int mdio_read (struct net_device *dev, int phy_id, int location);
620 static void mdio_write (struct net_device *dev, int phy_id, int location,
622 static void rtl8139_start_thread(struct net_device *dev);
623 static void rtl8139_tx_timeout (struct net_device *dev);
624 static void rtl8139_init_ring (struct net_device *dev);
625 static int rtl8139_start_xmit (struct sk_buff *skb,
626 struct net_device *dev);
627 static int rtl8139_poll(struct net_device *dev, int *budget);
628 #ifdef CONFIG_NET_POLL_CONTROLLER
629 static void rtl8139_poll_controller(struct net_device *dev);
631 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
632 struct pt_regs *regs);
633 static int rtl8139_close (struct net_device *dev);
634 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
635 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
636 static void rtl8139_set_rx_mode (struct net_device *dev);
637 static void __set_rx_mode (struct net_device *dev);
638 static void rtl8139_hw_start (struct net_device *dev);
639 static struct ethtool_ops rtl8139_ethtool_ops;
643 #define RTL_R8(reg) inb (((unsigned long)ioaddr) + (reg))
644 #define RTL_R16(reg) inw (((unsigned long)ioaddr) + (reg))
645 #define RTL_R32(reg) ((unsigned long) inl (((unsigned long)ioaddr) + (reg)))
646 #define RTL_W8(reg, val8) outb ((val8), ((unsigned long)ioaddr) + (reg))
647 #define RTL_W16(reg, val16) outw ((val16), ((unsigned long)ioaddr) + (reg))
648 #define RTL_W32(reg, val32) outl ((val32), ((unsigned long)ioaddr) + (reg))
649 #define RTL_W8_F RTL_W8
650 #define RTL_W16_F RTL_W16
651 #define RTL_W32_F RTL_W32
658 #define readb(addr) inb((unsigned long)(addr))
659 #define readw(addr) inw((unsigned long)(addr))
660 #define readl(addr) inl((unsigned long)(addr))
661 #define writeb(val,addr) outb((val),(unsigned long)(addr))
662 #define writew(val,addr) outw((val),(unsigned long)(addr))
663 #define writel(val,addr) outl((val),(unsigned long)(addr))
667 /* write MMIO register, with flush */
668 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
669 #define RTL_W8_F(reg, val8) do { writeb ((val8), ioaddr + (reg)); readb (ioaddr + (reg)); } while (0)
670 #define RTL_W16_F(reg, val16) do { writew ((val16), ioaddr + (reg)); readw (ioaddr + (reg)); } while (0)
671 #define RTL_W32_F(reg, val32) do { writel ((val32), ioaddr + (reg)); readl (ioaddr + (reg)); } while (0)
674 #define MMIO_FLUSH_AUDIT_COMPLETE 1
675 #if MMIO_FLUSH_AUDIT_COMPLETE
677 /* write MMIO register */
678 #define RTL_W8(reg, val8) writeb ((val8), ioaddr + (reg))
679 #define RTL_W16(reg, val16) writew ((val16), ioaddr + (reg))
680 #define RTL_W32(reg, val32) writel ((val32), ioaddr + (reg))
684 /* write MMIO register, then flush */
685 #define RTL_W8 RTL_W8_F
686 #define RTL_W16 RTL_W16_F
687 #define RTL_W32 RTL_W32_F
689 #endif /* MMIO_FLUSH_AUDIT_COMPLETE */
691 /* read MMIO register */
692 #define RTL_R8(reg) readb (ioaddr + (reg))
693 #define RTL_R16(reg) readw (ioaddr + (reg))
694 #define RTL_R32(reg) ((unsigned long) readl (ioaddr + (reg)))
696 #endif /* USE_IO_OPS */
699 static const u16 rtl8139_intr_mask =
700 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
701 TxErr | TxOK | RxErr | RxOK;
703 static const u16 rtl8139_norx_intr_mask =
704 PCIErr | PCSTimeout | RxUnderrun |
705 TxErr | TxOK | RxErr ;
708 static const unsigned int rtl8139_rx_config =
709 RxCfgRcv8K | RxNoWrap |
710 (RX_FIFO_THRESH << RxCfgFIFOShift) |
711 (RX_DMA_BURST << RxCfgDMAShift);
712 #elif RX_BUF_IDX == 1
713 static const unsigned int rtl8139_rx_config =
714 RxCfgRcv16K | RxNoWrap |
715 (RX_FIFO_THRESH << RxCfgFIFOShift) |
716 (RX_DMA_BURST << RxCfgDMAShift);
717 #elif RX_BUF_IDX == 2
718 static const unsigned int rtl8139_rx_config =
719 RxCfgRcv32K | RxNoWrap |
720 (RX_FIFO_THRESH << RxCfgFIFOShift) |
721 (RX_DMA_BURST << RxCfgDMAShift);
722 #elif RX_BUF_IDX == 3
723 static const unsigned int rtl8139_rx_config =
725 (RX_FIFO_THRESH << RxCfgFIFOShift) |
726 (RX_DMA_BURST << RxCfgDMAShift);
728 #error "Invalid configuration for 8139_RXBUF_IDX"
731 static const unsigned int rtl8139_tx_config =
732 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
734 static void __rtl8139_cleanup_dev (struct net_device *dev)
736 struct rtl8139_private *tp = netdev_priv(dev);
737 struct pci_dev *pdev;
739 assert (dev != NULL);
740 assert (tp->pci_dev != NULL);
745 iounmap (tp->mmio_addr);
746 #endif /* !USE_IO_OPS */
748 /* it's ok to call this even if we have no regions to free */
749 pci_release_regions (pdev);
752 pci_set_drvdata (pdev, NULL);
756 static void rtl8139_chip_reset (void *ioaddr)
760 /* Soft reset the chip. */
761 RTL_W8 (ChipCmd, CmdReset);
763 /* Check that the chip has finished the reset. */
764 for (i = 1000; i > 0; i--) {
766 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
773 static int __devinit rtl8139_init_board (struct pci_dev *pdev,
774 struct net_device **dev_out)
777 struct net_device *dev;
778 struct rtl8139_private *tp;
780 int rc, disable_dev_on_err = 0;
782 unsigned long pio_start, pio_end, pio_flags, pio_len;
783 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
786 assert (pdev != NULL);
790 /* dev and priv zeroed in alloc_etherdev */
791 dev = alloc_etherdev (sizeof (*tp));
793 printk (KERN_ERR PFX "%s: Unable to alloc new net device\n", pci_name(pdev));
796 SET_MODULE_OWNER(dev);
797 SET_NETDEV_DEV(dev, &pdev->dev);
799 tp = netdev_priv(dev);
802 /* enable device (incl. PCI PM wakeup and hotplug setup) */
803 rc = pci_enable_device (pdev);
807 pio_start = pci_resource_start (pdev, 0);
808 pio_end = pci_resource_end (pdev, 0);
809 pio_flags = pci_resource_flags (pdev, 0);
810 pio_len = pci_resource_len (pdev, 0);
812 mmio_start = pci_resource_start (pdev, 1);
813 mmio_end = pci_resource_end (pdev, 1);
814 mmio_flags = pci_resource_flags (pdev, 1);
815 mmio_len = pci_resource_len (pdev, 1);
817 /* set this immediately, we need to know before
818 * we talk to the chip directly */
819 DPRINTK("PIO region size == 0x%02X\n", pio_len);
820 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
823 /* make sure PCI base addr 0 is PIO */
824 if (!(pio_flags & IORESOURCE_IO)) {
825 printk (KERN_ERR PFX "%s: region #0 not a PIO resource, aborting\n", pci_name(pdev));
829 /* check for weird/broken PCI region reporting */
830 if (pio_len < RTL_MIN_IO_SIZE) {
831 printk (KERN_ERR PFX "%s: Invalid PCI I/O region size(s), aborting\n", pci_name(pdev));
836 /* make sure PCI base addr 1 is MMIO */
837 if (!(mmio_flags & IORESOURCE_MEM)) {
838 printk (KERN_ERR PFX "%s: region #1 not an MMIO resource, aborting\n", pci_name(pdev));
842 if (mmio_len < RTL_MIN_IO_SIZE) {
843 printk (KERN_ERR PFX "%s: Invalid PCI mem region size(s), aborting\n", pci_name(pdev));
849 rc = pci_request_regions (pdev, "8139too");
852 disable_dev_on_err = 1;
854 /* enable PCI bus-mastering */
855 pci_set_master (pdev);
858 ioaddr = (void *) pio_start;
859 dev->base_addr = pio_start;
860 tp->mmio_addr = ioaddr;
861 tp->regs_len = pio_len;
863 /* ioremap MMIO region */
864 ioaddr = ioremap (mmio_start, mmio_len);
865 if (ioaddr == NULL) {
866 printk (KERN_ERR PFX "%s: cannot remap MMIO, aborting\n", pci_name(pdev));
870 dev->base_addr = (long) ioaddr;
871 tp->mmio_addr = ioaddr;
872 tp->regs_len = mmio_len;
873 #endif /* USE_IO_OPS */
875 /* Bring old chips out of low-power mode. */
876 RTL_W8 (HltClk, 'R');
878 /* check for missing/broken hardware */
879 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
880 printk (KERN_ERR PFX "%s: Chip not responding, ignoring board\n",
886 /* identify chip attached to board */
887 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
888 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
889 if (version == rtl_chip_info[i].version) {
894 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
895 printk (KERN_DEBUG PFX "%s: unknown chip version, assuming RTL-8139\n",
897 printk (KERN_DEBUG PFX "%s: TxConfig = 0x%lx\n", pci_name(pdev), RTL_R32 (TxConfig));
901 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
902 version, i, rtl_chip_info[i].name);
904 if (tp->chipset >= CH_8139B) {
905 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
906 DPRINTK("PCI PM wakeup\n");
907 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
910 new_tmp8 |= Cfg1_PM_Enable;
911 if (new_tmp8 != tmp8) {
912 RTL_W8 (Cfg9346, Cfg9346_Unlock);
913 RTL_W8 (Config1, tmp8);
914 RTL_W8 (Cfg9346, Cfg9346_Lock);
916 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
917 tmp8 = RTL_R8 (Config4);
919 RTL_W8 (Cfg9346, Cfg9346_Unlock);
920 RTL_W8 (Config4, tmp8 & ~LWPTN);
921 RTL_W8 (Cfg9346, Cfg9346_Lock);
925 DPRINTK("Old chip wakeup\n");
926 tmp8 = RTL_R8 (Config1);
927 tmp8 &= ~(SLEEP | PWRDN);
928 RTL_W8 (Config1, tmp8);
931 rtl8139_chip_reset (ioaddr);
937 __rtl8139_cleanup_dev (dev);
938 if (disable_dev_on_err)
939 pci_disable_device (pdev);
944 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
945 const struct pci_device_id *ent)
947 struct net_device *dev = NULL;
948 struct rtl8139_private *tp;
949 int i, addr_len, option;
951 static int board_idx = -1;
954 assert (pdev != NULL);
955 assert (ent != NULL);
959 /* when we're built into the kernel, the driver version message
960 * is only printed if at least one 8139 board has been found
964 static int printed_version;
965 if (!printed_version++)
966 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
970 pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
972 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
973 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev >= 0x20) {
974 printk(KERN_INFO PFX "pci dev %s (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
975 pci_name(pdev), pdev->vendor, pdev->device, pci_rev);
976 printk(KERN_INFO PFX "Use the \"8139cp\" driver for improved performance and stability.\n");
979 i = rtl8139_init_board (pdev, &dev);
983 assert (dev != NULL);
984 tp = netdev_priv(dev);
986 ioaddr = tp->mmio_addr;
987 assert (ioaddr != NULL);
989 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
990 for (i = 0; i < 3; i++)
991 ((u16 *) (dev->dev_addr))[i] =
992 le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len));
994 /* The Rtl8139-specific entries in the device structure. */
995 dev->open = rtl8139_open;
996 dev->hard_start_xmit = rtl8139_start_xmit;
997 dev->poll = rtl8139_poll;
999 dev->stop = rtl8139_close;
1000 dev->get_stats = rtl8139_get_stats;
1001 dev->set_multicast_list = rtl8139_set_rx_mode;
1002 dev->do_ioctl = netdev_ioctl;
1003 dev->ethtool_ops = &rtl8139_ethtool_ops;
1004 dev->tx_timeout = rtl8139_tx_timeout;
1005 dev->watchdog_timeo = TX_TIMEOUT;
1006 #ifdef CONFIG_NET_POLL_CONTROLLER
1007 dev->poll_controller = rtl8139_poll_controller;
1010 /* note: the hardware is not capable of sg/csum/highdma, however
1011 * through the use of skb_copy_and_csum_dev we enable these
1014 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
1016 dev->irq = pdev->irq;
1018 /* tp zeroed and aligned in alloc_etherdev */
1019 tp = netdev_priv(dev);
1021 /* note: tp->chipset set in rtl8139_init_board */
1022 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1023 tp->mmio_addr = ioaddr;
1025 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1026 spin_lock_init (&tp->lock);
1027 spin_lock_init (&tp->rx_lock);
1028 init_waitqueue_head (&tp->thr_wait);
1029 init_completion (&tp->thr_exited);
1031 tp->mii.mdio_read = mdio_read;
1032 tp->mii.mdio_write = mdio_write;
1033 tp->mii.phy_id_mask = 0x3f;
1034 tp->mii.reg_num_mask = 0x1f;
1036 /* dev is fully set up and ready to use now */
1037 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1038 i = register_netdev (dev);
1039 if (i) goto err_out;
1041 pci_set_drvdata (pdev, dev);
1043 printk (KERN_INFO "%s: %s at 0x%lx, "
1044 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1047 board_info[ent->driver_data].name,
1049 dev->dev_addr[0], dev->dev_addr[1],
1050 dev->dev_addr[2], dev->dev_addr[3],
1051 dev->dev_addr[4], dev->dev_addr[5],
1054 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
1055 dev->name, rtl_chip_info[tp->chipset].name);
1057 /* Find the connected MII xcvrs.
1058 Doing this in open() would allow detecting external xcvrs later, but
1059 takes too much time. */
1060 #ifdef CONFIG_8139TOO_8129
1061 if (tp->drv_flags & HAS_MII_XCVR) {
1062 int phy, phy_idx = 0;
1063 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1064 int mii_status = mdio_read(dev, phy, 1);
1065 if (mii_status != 0xffff && mii_status != 0x0000) {
1066 u16 advertising = mdio_read(dev, phy, 4);
1067 tp->phys[phy_idx++] = phy;
1068 printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x "
1069 "advertising %4.4x.\n",
1070 dev->name, phy, mii_status, advertising);
1074 printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
1082 tp->mii.phy_id = tp->phys[0];
1084 /* The lower four bits are the media type. */
1085 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1087 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1088 tp->default_port = option & 0xFF;
1089 if (tp->default_port)
1090 tp->mii.force_media = 1;
1092 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1093 tp->mii.full_duplex = full_duplex[board_idx];
1094 if (tp->mii.full_duplex) {
1095 printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
1096 /* Changing the MII-advertised media because might prevent
1098 tp->mii.force_media = 1;
1100 if (tp->default_port) {
1101 printk(KERN_INFO " Forcing %dMbps %s-duplex operation.\n",
1102 (option & 0x20 ? 100 : 10),
1103 (option & 0x10 ? "full" : "half"));
1104 mdio_write(dev, tp->phys[0], 0,
1105 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1106 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1109 /* Put the chip into low-power mode. */
1110 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1111 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1116 __rtl8139_cleanup_dev (dev);
1117 pci_disable_device (pdev);
1122 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1124 struct net_device *dev = pci_get_drvdata (pdev);
1126 assert (dev != NULL);
1128 unregister_netdev (dev);
1130 __rtl8139_cleanup_dev (dev);
1131 pci_disable_device (pdev);
1135 /* Serial EEPROM section. */
1137 /* EEPROM_Ctrl bits. */
1138 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1139 #define EE_CS 0x08 /* EEPROM chip select. */
1140 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1141 #define EE_WRITE_0 0x00
1142 #define EE_WRITE_1 0x02
1143 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1144 #define EE_ENB (0x80 | EE_CS)
1146 /* Delay between EEPROM clock transitions.
1147 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1150 #define eeprom_delay() readl(ee_addr)
1152 /* The EEPROM commands include the alway-set leading bit. */
1153 #define EE_WRITE_CMD (5)
1154 #define EE_READ_CMD (6)
1155 #define EE_ERASE_CMD (7)
1157 static int __devinit read_eeprom (void *ioaddr, int location, int addr_len)
1160 unsigned retval = 0;
1161 void *ee_addr = ioaddr + Cfg9346;
1162 int read_cmd = location | (EE_READ_CMD << addr_len);
1164 writeb (EE_ENB & ~EE_CS, ee_addr);
1165 writeb (EE_ENB, ee_addr);
1168 /* Shift the read command bits out. */
1169 for (i = 4 + addr_len; i >= 0; i--) {
1170 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1171 writeb (EE_ENB | dataval, ee_addr);
1173 writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
1176 writeb (EE_ENB, ee_addr);
1179 for (i = 16; i > 0; i--) {
1180 writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
1183 (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 :
1185 writeb (EE_ENB, ee_addr);
1189 /* Terminate the EEPROM access. */
1190 writeb (~EE_CS, ee_addr);
1196 /* MII serial management: mostly bogus for now. */
1197 /* Read and write the MII management registers using software-generated
1198 serial MDIO protocol.
1199 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1200 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1201 "overclocking" issues. */
1202 #define MDIO_DIR 0x80
1203 #define MDIO_DATA_OUT 0x04
1204 #define MDIO_DATA_IN 0x02
1205 #define MDIO_CLK 0x01
1206 #define MDIO_WRITE0 (MDIO_DIR)
1207 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1209 #define mdio_delay(mdio_addr) readb(mdio_addr)
1212 static char mii_2_8139_map[8] = {
1224 #ifdef CONFIG_8139TOO_8129
1225 /* Syncronize the MII management interface by shifting 32 one bits out. */
1226 static void mdio_sync (void *mdio_addr)
1230 for (i = 32; i >= 0; i--) {
1231 writeb (MDIO_WRITE1, mdio_addr);
1232 mdio_delay (mdio_addr);
1233 writeb (MDIO_WRITE1 | MDIO_CLK, mdio_addr);
1234 mdio_delay (mdio_addr);
1239 static int mdio_read (struct net_device *dev, int phy_id, int location)
1241 struct rtl8139_private *tp = netdev_priv(dev);
1243 #ifdef CONFIG_8139TOO_8129
1244 void *mdio_addr = tp->mmio_addr + Config4;
1245 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1249 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1250 return location < 8 && mii_2_8139_map[location] ?
1251 readw (tp->mmio_addr + mii_2_8139_map[location]) : 0;
1254 #ifdef CONFIG_8139TOO_8129
1255 mdio_sync (mdio_addr);
1256 /* Shift the read command bits out. */
1257 for (i = 15; i >= 0; i--) {
1258 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1260 writeb (MDIO_DIR | dataval, mdio_addr);
1261 mdio_delay (mdio_addr);
1262 writeb (MDIO_DIR | dataval | MDIO_CLK, mdio_addr);
1263 mdio_delay (mdio_addr);
1266 /* Read the two transition, 16 data, and wire-idle bits. */
1267 for (i = 19; i > 0; i--) {
1268 writeb (0, mdio_addr);
1269 mdio_delay (mdio_addr);
1270 retval = (retval << 1) | ((readb (mdio_addr) & MDIO_DATA_IN) ? 1 : 0);
1271 writeb (MDIO_CLK, mdio_addr);
1272 mdio_delay (mdio_addr);
1276 return (retval >> 1) & 0xffff;
1280 static void mdio_write (struct net_device *dev, int phy_id, int location,
1283 struct rtl8139_private *tp = netdev_priv(dev);
1284 #ifdef CONFIG_8139TOO_8129
1285 void *mdio_addr = tp->mmio_addr + Config4;
1286 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1290 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1291 void *ioaddr = tp->mmio_addr;
1292 if (location == 0) {
1293 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1294 RTL_W16 (BasicModeCtrl, value);
1295 RTL_W8 (Cfg9346, Cfg9346_Lock);
1296 } else if (location < 8 && mii_2_8139_map[location])
1297 RTL_W16 (mii_2_8139_map[location], value);
1301 #ifdef CONFIG_8139TOO_8129
1302 mdio_sync (mdio_addr);
1304 /* Shift the command bits out. */
1305 for (i = 31; i >= 0; i--) {
1307 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1308 writeb (dataval, mdio_addr);
1309 mdio_delay (mdio_addr);
1310 writeb (dataval | MDIO_CLK, mdio_addr);
1311 mdio_delay (mdio_addr);
1313 /* Clear out extra bits. */
1314 for (i = 2; i > 0; i--) {
1315 writeb (0, mdio_addr);
1316 mdio_delay (mdio_addr);
1317 writeb (MDIO_CLK, mdio_addr);
1318 mdio_delay (mdio_addr);
1324 static int rtl8139_open (struct net_device *dev)
1326 struct rtl8139_private *tp = netdev_priv(dev);
1328 void *ioaddr = tp->mmio_addr;
1330 retval = request_irq (dev->irq, rtl8139_interrupt, SA_SHIRQ, dev->name, dev);
1334 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1336 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1338 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1339 free_irq(dev->irq, dev);
1342 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1343 tp->tx_bufs, tp->tx_bufs_dma);
1345 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1346 tp->rx_ring, tp->rx_ring_dma);
1352 tp->mii.full_duplex = tp->mii.force_media;
1353 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1355 rtl8139_init_ring (dev);
1356 rtl8139_hw_start (dev);
1357 netif_start_queue (dev);
1359 if (netif_msg_ifup(tp))
1360 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#lx IRQ %d"
1361 " GP Pins %2.2x %s-duplex.\n",
1362 dev->name, pci_resource_start (tp->pci_dev, 1),
1363 dev->irq, RTL_R8 (MediaStatus),
1364 tp->mii.full_duplex ? "full" : "half");
1366 rtl8139_start_thread(dev);
1372 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1374 struct rtl8139_private *tp = netdev_priv(dev);
1376 if (tp->phys[0] >= 0) {
1377 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1381 /* Start the hardware at open or resume. */
1382 static void rtl8139_hw_start (struct net_device *dev)
1384 struct rtl8139_private *tp = netdev_priv(dev);
1385 void *ioaddr = tp->mmio_addr;
1389 /* Bring old chips out of low-power mode. */
1390 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1391 RTL_W8 (HltClk, 'R');
1393 rtl8139_chip_reset (ioaddr);
1395 /* unlock Config[01234] and BMCR register writes */
1396 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1397 /* Restore our idea of the MAC address. */
1398 RTL_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1399 RTL_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1401 /* Must enable Tx/Rx before setting transfer thresholds! */
1402 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1404 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1405 RTL_W32 (RxConfig, tp->rx_config);
1406 RTL_W32 (TxConfig, rtl8139_tx_config);
1410 rtl_check_media (dev, 1);
1412 if (tp->chipset >= CH_8139B) {
1413 /* Disable magic packet scanning, which is enabled
1414 * when PM is enabled in Config1. It can be reenabled
1415 * via ETHTOOL_SWOL if desired. */
1416 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1419 DPRINTK("init buffer addresses\n");
1421 /* Lock Config[01234] and BMCR register writes */
1422 RTL_W8 (Cfg9346, Cfg9346_Lock);
1424 /* init Rx ring buffer DMA address */
1425 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1427 /* init Tx buffer DMA addresses */
1428 for (i = 0; i < NUM_TX_DESC; i++)
1429 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1431 RTL_W32 (RxMissed, 0);
1433 rtl8139_set_rx_mode (dev);
1435 /* no early-rx interrupts */
1436 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1438 /* make sure RxTx has started */
1439 tmp = RTL_R8 (ChipCmd);
1440 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1441 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1443 /* Enable all known interrupts by setting the interrupt mask. */
1444 RTL_W16 (IntrMask, rtl8139_intr_mask);
1448 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1449 static void rtl8139_init_ring (struct net_device *dev)
1451 struct rtl8139_private *tp = netdev_priv(dev);
1458 for (i = 0; i < NUM_TX_DESC; i++)
1459 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1463 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1464 static int next_tick = 3 * HZ;
1466 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1467 static inline void rtl8139_tune_twister (struct net_device *dev,
1468 struct rtl8139_private *tp) {}
1470 enum TwisterParamVals {
1471 PARA78_default = 0x78fa8388,
1472 PARA7c_default = 0xcb38de43, /* param[0][3] */
1473 PARA7c_xxx = 0xcb38de43,
1476 static const unsigned long param[4][4] = {
1477 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1478 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1479 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1480 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1483 static void rtl8139_tune_twister (struct net_device *dev,
1484 struct rtl8139_private *tp)
1487 void *ioaddr = tp->mmio_addr;
1489 /* This is a complicated state machine to configure the "twister" for
1490 impedance/echos based on the cable length.
1491 All of this is magic and undocumented.
1493 switch (tp->twistie) {
1495 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1496 /* We have link beat, let us tune the twister. */
1497 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1498 tp->twistie = 2; /* Change to state 2. */
1499 next_tick = HZ / 10;
1501 /* Just put in some reasonable defaults for when beat returns. */
1502 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1503 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1504 RTL_W32 (PARA78, PARA78_default);
1505 RTL_W32 (PARA7c, PARA7c_default);
1506 tp->twistie = 0; /* Bail from future actions. */
1510 /* Read how long it took to hear the echo. */
1511 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1512 if (linkcase == 0x7000)
1514 else if (linkcase == 0x3000)
1516 else if (linkcase == 0x1000)
1521 tp->twistie = 3; /* Change to state 2. */
1522 next_tick = HZ / 10;
1525 /* Put out four tuning parameters, one per 100msec. */
1526 if (tp->twist_col == 0)
1527 RTL_W16 (FIFOTMS, 0);
1528 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1529 [(int) tp->twist_col]);
1530 next_tick = HZ / 10;
1531 if (++tp->twist_col >= 4) {
1532 /* For short cables we are done.
1533 For long cables (row == 3) check for mistune. */
1535 (tp->twist_row == 3) ? 4 : 0;
1539 /* Special case for long cables: check for mistune. */
1540 if ((RTL_R16 (CSCR) &
1541 CSCR_LinkStatusBits) == 0x7000) {
1545 RTL_W32 (PARA7c, 0xfb38de03);
1547 next_tick = HZ / 10;
1551 /* Retune for shorter cable (column 2). */
1552 RTL_W32 (FIFOTMS, 0x20);
1553 RTL_W32 (PARA78, PARA78_default);
1554 RTL_W32 (PARA7c, PARA7c_default);
1555 RTL_W32 (FIFOTMS, 0x00);
1559 next_tick = HZ / 10;
1567 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1569 static inline void rtl8139_thread_iter (struct net_device *dev,
1570 struct rtl8139_private *tp,
1575 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1577 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1578 int duplex = (mii_lpa & LPA_100FULL)
1579 || (mii_lpa & 0x01C0) == 0x0040;
1580 if (tp->mii.full_duplex != duplex) {
1581 tp->mii.full_duplex = duplex;
1585 "%s: Setting %s-duplex based on MII #%d link"
1586 " partner ability of %4.4x.\n",
1588 tp->mii.full_duplex ? "full" : "half",
1589 tp->phys[0], mii_lpa);
1591 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1595 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1596 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1597 RTL_W8 (Cfg9346, Cfg9346_Lock);
1602 next_tick = HZ * 60;
1604 rtl8139_tune_twister (dev, tp);
1606 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1607 dev->name, RTL_R16 (NWayLPAR));
1608 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1609 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1610 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1611 dev->name, RTL_R8 (Config0),
1615 static int rtl8139_thread (void *data)
1617 struct net_device *dev = data;
1618 struct rtl8139_private *tp = netdev_priv(dev);
1619 unsigned long timeout;
1621 daemonize("%s", dev->name);
1622 allow_signal(SIGTERM);
1625 timeout = next_tick;
1627 timeout = interruptible_sleep_on_timeout (&tp->thr_wait, timeout);
1628 /* make swsusp happy with our thread */
1629 try_to_freeze(PF_FREEZE);
1630 } while (!signal_pending (current) && (timeout > 0));
1632 if (signal_pending (current)) {
1633 flush_signals(current);
1636 if (tp->time_to_die)
1639 if (rtnl_lock_interruptible ())
1641 rtl8139_thread_iter (dev, tp, tp->mmio_addr);
1645 complete_and_exit (&tp->thr_exited, 0);
1648 static void rtl8139_start_thread(struct net_device *dev)
1650 struct rtl8139_private *tp = netdev_priv(dev);
1654 tp->time_to_die = 0;
1655 if (tp->chipset == CH_8139_K)
1657 else if (tp->drv_flags & HAS_LNK_CHNG)
1660 tp->thr_pid = kernel_thread(rtl8139_thread, dev, CLONE_FS|CLONE_FILES);
1661 if (tp->thr_pid < 0) {
1662 printk (KERN_WARNING "%s: unable to start kernel thread\n",
1667 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1672 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1676 static void rtl8139_tx_timeout (struct net_device *dev)
1678 struct rtl8139_private *tp = netdev_priv(dev);
1679 void *ioaddr = tp->mmio_addr;
1682 unsigned long flags;
1684 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1685 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1686 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1687 /* Emit info to figure out what went wrong. */
1688 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1689 dev->name, tp->cur_tx, tp->dirty_tx);
1690 for (i = 0; i < NUM_TX_DESC; i++)
1691 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1692 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1693 i == tp->dirty_tx % NUM_TX_DESC ?
1694 " (queue head)" : "");
1696 tp->xstats.tx_timeouts++;
1698 /* disable Tx ASAP, if not already */
1699 tmp8 = RTL_R8 (ChipCmd);
1700 if (tmp8 & CmdTxEnb)
1701 RTL_W8 (ChipCmd, CmdRxEnb);
1703 spin_lock(&tp->rx_lock);
1704 /* Disable interrupts by clearing the interrupt mask. */
1705 RTL_W16 (IntrMask, 0x0000);
1707 /* Stop a shared interrupt from scavenging while we are. */
1708 spin_lock_irqsave (&tp->lock, flags);
1709 rtl8139_tx_clear (tp);
1710 spin_unlock_irqrestore (&tp->lock, flags);
1712 /* ...and finally, reset everything */
1713 if (netif_running(dev)) {
1714 rtl8139_hw_start (dev);
1715 netif_wake_queue (dev);
1717 spin_unlock(&tp->rx_lock);
1721 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1723 struct rtl8139_private *tp = netdev_priv(dev);
1724 void *ioaddr = tp->mmio_addr;
1726 unsigned int len = skb->len;
1728 /* Calculate the next Tx descriptor entry. */
1729 entry = tp->cur_tx % NUM_TX_DESC;
1731 /* Note: the chip doesn't have auto-pad! */
1732 if (likely(len < TX_BUF_SIZE)) {
1734 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1735 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1739 tp->stats.tx_dropped++;
1743 spin_lock_irq(&tp->lock);
1744 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1745 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1747 dev->trans_start = jiffies;
1752 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1753 netif_stop_queue (dev);
1754 spin_unlock_irq(&tp->lock);
1756 if (netif_msg_tx_queued(tp))
1757 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1758 dev->name, len, entry);
1764 static void rtl8139_tx_interrupt (struct net_device *dev,
1765 struct rtl8139_private *tp,
1768 unsigned long dirty_tx, tx_left;
1770 assert (dev != NULL);
1771 assert (ioaddr != NULL);
1773 dirty_tx = tp->dirty_tx;
1774 tx_left = tp->cur_tx - dirty_tx;
1775 while (tx_left > 0) {
1776 int entry = dirty_tx % NUM_TX_DESC;
1779 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1781 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1782 break; /* It still hasn't been Txed */
1784 /* Note: TxCarrierLost is always asserted at 100mbps. */
1785 if (txstatus & (TxOutOfWindow | TxAborted)) {
1786 /* There was an major error, log it. */
1787 if (netif_msg_tx_err(tp))
1788 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1789 dev->name, txstatus);
1790 tp->stats.tx_errors++;
1791 if (txstatus & TxAborted) {
1792 tp->stats.tx_aborted_errors++;
1793 RTL_W32 (TxConfig, TxClearAbt);
1794 RTL_W16 (IntrStatus, TxErr);
1797 if (txstatus & TxCarrierLost)
1798 tp->stats.tx_carrier_errors++;
1799 if (txstatus & TxOutOfWindow)
1800 tp->stats.tx_window_errors++;
1802 if (txstatus & TxUnderrun) {
1803 /* Add 64 to the Tx FIFO threshold. */
1804 if (tp->tx_flag < 0x00300000)
1805 tp->tx_flag += 0x00020000;
1806 tp->stats.tx_fifo_errors++;
1808 tp->stats.collisions += (txstatus >> 24) & 15;
1809 tp->stats.tx_bytes += txstatus & 0x7ff;
1810 tp->stats.tx_packets++;
1817 #ifndef RTL8139_NDEBUG
1818 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1819 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1820 dev->name, dirty_tx, tp->cur_tx);
1821 dirty_tx += NUM_TX_DESC;
1823 #endif /* RTL8139_NDEBUG */
1825 /* only wake the queue if we did work, and the queue is stopped */
1826 if (tp->dirty_tx != dirty_tx) {
1827 tp->dirty_tx = dirty_tx;
1829 netif_wake_queue (dev);
1834 /* TODO: clean this up! Rx reset need not be this intensive */
1835 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1836 struct rtl8139_private *tp, void *ioaddr)
1839 #ifdef CONFIG_8139_OLD_RX_RESET
1843 if (netif_msg_rx_err (tp))
1844 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1845 dev->name, rx_status);
1846 tp->stats.rx_errors++;
1847 if (!(rx_status & RxStatusOK)) {
1848 if (rx_status & RxTooLong) {
1849 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1850 dev->name, rx_status);
1851 /* A.C.: The chip hangs here. */
1853 if (rx_status & (RxBadSymbol | RxBadAlign))
1854 tp->stats.rx_frame_errors++;
1855 if (rx_status & (RxRunt | RxTooLong))
1856 tp->stats.rx_length_errors++;
1857 if (rx_status & RxCRCErr)
1858 tp->stats.rx_crc_errors++;
1860 tp->xstats.rx_lost_in_ring++;
1863 #ifndef CONFIG_8139_OLD_RX_RESET
1864 tmp8 = RTL_R8 (ChipCmd);
1865 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1866 RTL_W8 (ChipCmd, tmp8);
1867 RTL_W32 (RxConfig, tp->rx_config);
1870 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1872 /* disable receive */
1873 RTL_W8_F (ChipCmd, CmdTxEnb);
1875 while (--tmp_work > 0) {
1877 tmp8 = RTL_R8 (ChipCmd);
1878 if (!(tmp8 & CmdRxEnb))
1882 printk (KERN_WARNING PFX "rx stop wait too long\n");
1883 /* restart receive */
1885 while (--tmp_work > 0) {
1886 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1888 tmp8 = RTL_R8 (ChipCmd);
1889 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1893 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1895 /* and reinitialize all rx related registers */
1896 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1897 /* Must enable Tx/Rx before setting transfer thresholds! */
1898 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1900 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1901 RTL_W32 (RxConfig, tp->rx_config);
1904 DPRINTK("init buffer addresses\n");
1906 /* Lock Config[01234] and BMCR register writes */
1907 RTL_W8 (Cfg9346, Cfg9346_Lock);
1909 /* init Rx ring buffer DMA address */
1910 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1912 /* A.C.: Reset the multicast list. */
1913 __set_rx_mode (dev);
1918 static __inline__ void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1919 u32 offset, unsigned int size)
1921 u32 left = RX_BUF_LEN - offset;
1924 memcpy(skb->data, ring + offset, left);
1925 memcpy(skb->data+left, ring, size - left);
1927 memcpy(skb->data, ring + offset, size);
1931 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1933 void *ioaddr = tp->mmio_addr;
1936 status = RTL_R16 (IntrStatus) & RxAckBits;
1938 /* Clear out errors and receive interrupts */
1939 if (likely(status != 0)) {
1940 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1941 tp->stats.rx_errors++;
1942 if (status & RxFIFOOver)
1943 tp->stats.rx_fifo_errors++;
1945 RTL_W16_F (IntrStatus, RxAckBits);
1949 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1952 void *ioaddr = tp->mmio_addr;
1954 unsigned char *rx_ring = tp->rx_ring;
1955 unsigned int cur_rx = tp->cur_rx;
1956 unsigned int rx_size = 0;
1958 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1959 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1960 RTL_R16 (RxBufAddr),
1961 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1963 while (netif_running(dev) && received < budget
1964 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1965 u32 ring_offset = cur_rx % RX_BUF_LEN;
1967 unsigned int pkt_size;
1968 struct sk_buff *skb;
1972 /* read size+status of next frame from DMA ring buffer */
1973 rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset));
1974 rx_size = rx_status >> 16;
1975 pkt_size = rx_size - 4;
1977 if (netif_msg_rx_status(tp))
1978 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1979 " cur %4.4x.\n", dev->name, rx_status,
1981 #if RTL8139_DEBUG > 2
1984 DPRINTK ("%s: Frame contents ", dev->name);
1985 for (i = 0; i < 70; i++)
1987 rx_ring[ring_offset + i]);
1992 /* Packet copy from FIFO still in progress.
1993 * Theoretically, this should never happen
1994 * since EarlyRx is disabled.
1996 if (unlikely(rx_size == 0xfff0)) {
1997 if (!tp->fifo_copy_timeout)
1998 tp->fifo_copy_timeout = jiffies + 2;
1999 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
2000 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
2004 if (netif_msg_intr(tp)) {
2005 printk(KERN_DEBUG "%s: fifo copy in progress.",
2008 tp->xstats.early_rx++;
2013 tp->fifo_copy_timeout = 0;
2015 /* If Rx err or invalid rx_size/rx_status received
2016 * (which happens if we get lost in the ring),
2017 * Rx process gets reset, so we abort any further
2020 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2022 (!(rx_status & RxStatusOK)))) {
2023 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2028 /* Malloc up new buffer, compatible with net-2e. */
2029 /* Omit the four octet CRC from the length. */
2031 skb = dev_alloc_skb (pkt_size + 2);
2034 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
2036 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2038 eth_copy_and_sum (skb, &rx_ring[ring_offset + 4], pkt_size, 0);
2040 skb_put (skb, pkt_size);
2042 skb->protocol = eth_type_trans (skb, dev);
2044 dev->last_rx = jiffies;
2045 tp->stats.rx_bytes += pkt_size;
2046 tp->stats.rx_packets++;
2048 netif_receive_skb (skb);
2050 if (net_ratelimit())
2051 printk (KERN_WARNING
2052 "%s: Memory squeeze, dropping packet.\n",
2054 tp->stats.rx_dropped++;
2058 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2059 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2061 rtl8139_isr_ack(tp);
2064 if (unlikely(!received || rx_size == 0xfff0))
2065 rtl8139_isr_ack(tp);
2067 #if RTL8139_DEBUG > 1
2068 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2069 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2070 RTL_R16 (RxBufAddr),
2071 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2074 tp->cur_rx = cur_rx;
2077 * The receive buffer should be mostly empty.
2078 * Tell NAPI to reenable the Rx irq.
2080 if (tp->fifo_copy_timeout)
2088 static void rtl8139_weird_interrupt (struct net_device *dev,
2089 struct rtl8139_private *tp,
2091 int status, int link_changed)
2093 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2096 assert (dev != NULL);
2097 assert (tp != NULL);
2098 assert (ioaddr != NULL);
2100 /* Update the error count. */
2101 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2102 RTL_W32 (RxMissed, 0);
2104 if ((status & RxUnderrun) && link_changed &&
2105 (tp->drv_flags & HAS_LNK_CHNG)) {
2106 rtl_check_media(dev, 0);
2107 status &= ~RxUnderrun;
2110 if (status & (RxUnderrun | RxErr))
2111 tp->stats.rx_errors++;
2113 if (status & PCSTimeout)
2114 tp->stats.rx_length_errors++;
2115 if (status & RxUnderrun)
2116 tp->stats.rx_fifo_errors++;
2117 if (status & PCIErr) {
2119 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2120 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2122 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2123 dev->name, pci_cmd_status);
2127 static int rtl8139_poll(struct net_device *dev, int *budget)
2129 struct rtl8139_private *tp = netdev_priv(dev);
2130 void *ioaddr = tp->mmio_addr;
2131 int orig_budget = min(*budget, dev->quota);
2134 spin_lock(&tp->rx_lock);
2135 if (likely(RTL_R16(IntrStatus) & RxAckBits)) {
2138 work_done = rtl8139_rx(dev, tp, orig_budget);
2139 if (likely(work_done > 0)) {
2140 *budget -= work_done;
2141 dev->quota -= work_done;
2142 done = (work_done < orig_budget);
2148 * Order is important since data can get interrupted
2149 * again when we think we are done.
2151 local_irq_disable();
2152 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2153 __netif_rx_complete(dev);
2156 spin_unlock(&tp->rx_lock);
2161 /* The interrupt handler does all of the Rx thread work and cleans up
2162 after the Tx thread. */
2163 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
2164 struct pt_regs *regs)
2166 struct net_device *dev = (struct net_device *) dev_instance;
2167 struct rtl8139_private *tp = netdev_priv(dev);
2168 void *ioaddr = tp->mmio_addr;
2169 u16 status, ackstat;
2170 int link_changed = 0; /* avoid bogus "uninit" warning */
2173 spin_lock (&tp->lock);
2174 status = RTL_R16 (IntrStatus);
2177 if (unlikely((status & rtl8139_intr_mask) == 0))
2182 /* h/w no longer present (hotplug?) or major error, bail */
2183 if (unlikely(status == 0xFFFF))
2186 /* close possible race's with dev_close */
2187 if (unlikely(!netif_running(dev))) {
2188 RTL_W16 (IntrMask, 0);
2192 /* Acknowledge all of the current interrupt sources ASAP, but
2193 an first get an additional status bit from CSCR. */
2194 if (unlikely(status & RxUnderrun))
2195 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2197 ackstat = status & ~(RxAckBits | TxErr);
2199 RTL_W16 (IntrStatus, ackstat);
2201 /* Receive packets are processed by poll routine.
2202 If not running start it now. */
2203 if (status & RxAckBits){
2204 if (netif_rx_schedule_prep(dev)) {
2205 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2206 __netif_rx_schedule (dev);
2210 /* Check uncommon events with one test. */
2211 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2212 rtl8139_weird_interrupt (dev, tp, ioaddr,
2213 status, link_changed);
2215 if (status & (TxOK | TxErr)) {
2216 rtl8139_tx_interrupt (dev, tp, ioaddr);
2218 RTL_W16 (IntrStatus, TxErr);
2221 spin_unlock (&tp->lock);
2223 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2224 dev->name, RTL_R16 (IntrStatus));
2225 return IRQ_RETVAL(handled);
2228 #ifdef CONFIG_NET_POLL_CONTROLLER
2230 * Polling receive - used by netconsole and other diagnostic tools
2231 * to allow network i/o with interrupts disabled.
2233 static void rtl8139_poll_controller(struct net_device *dev)
2235 disable_irq(dev->irq);
2236 rtl8139_interrupt(dev->irq, dev, NULL);
2237 enable_irq(dev->irq);
2241 static int rtl8139_close (struct net_device *dev)
2243 struct rtl8139_private *tp = netdev_priv(dev);
2244 void *ioaddr = tp->mmio_addr;
2246 unsigned long flags;
2248 netif_stop_queue (dev);
2250 if (tp->thr_pid >= 0) {
2251 tp->time_to_die = 1;
2253 ret = kill_proc (tp->thr_pid, SIGTERM, 1);
2255 printk (KERN_ERR "%s: unable to signal thread\n", dev->name);
2258 wait_for_completion (&tp->thr_exited);
2261 if (netif_msg_ifdown(tp))
2262 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2263 dev->name, RTL_R16 (IntrStatus));
2265 spin_lock_irqsave (&tp->lock, flags);
2267 /* Stop the chip's Tx and Rx DMA processes. */
2268 RTL_W8 (ChipCmd, 0);
2270 /* Disable interrupts by clearing the interrupt mask. */
2271 RTL_W16 (IntrMask, 0);
2273 /* Update the error counts. */
2274 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2275 RTL_W32 (RxMissed, 0);
2277 spin_unlock_irqrestore (&tp->lock, flags);
2279 synchronize_irq (dev->irq); /* racy, but that's ok here */
2280 free_irq (dev->irq, dev);
2282 rtl8139_tx_clear (tp);
2284 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
2285 tp->rx_ring, tp->rx_ring_dma);
2286 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
2287 tp->tx_bufs, tp->tx_bufs_dma);
2291 /* Green! Put the chip in low-power mode. */
2292 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2294 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2295 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2301 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2302 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2303 other threads or interrupts aren't messing with the 8139. */
2304 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2306 struct rtl8139_private *np = netdev_priv(dev);
2307 void *ioaddr = np->mmio_addr;
2309 spin_lock_irq(&np->lock);
2310 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2311 u8 cfg3 = RTL_R8 (Config3);
2312 u8 cfg5 = RTL_R8 (Config5);
2314 wol->supported = WAKE_PHY | WAKE_MAGIC
2315 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2318 if (cfg3 & Cfg3_LinkUp)
2319 wol->wolopts |= WAKE_PHY;
2320 if (cfg3 & Cfg3_Magic)
2321 wol->wolopts |= WAKE_MAGIC;
2322 /* (KON)FIXME: See how netdev_set_wol() handles the
2323 following constants. */
2324 if (cfg5 & Cfg5_UWF)
2325 wol->wolopts |= WAKE_UCAST;
2326 if (cfg5 & Cfg5_MWF)
2327 wol->wolopts |= WAKE_MCAST;
2328 if (cfg5 & Cfg5_BWF)
2329 wol->wolopts |= WAKE_BCAST;
2331 spin_unlock_irq(&np->lock);
2335 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2336 that wol points to kernel memory and other threads or interrupts
2337 aren't messing with the 8139. */
2338 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2340 struct rtl8139_private *np = netdev_priv(dev);
2341 void *ioaddr = np->mmio_addr;
2345 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2346 ? (WAKE_PHY | WAKE_MAGIC
2347 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2349 if (wol->wolopts & ~support)
2352 spin_lock_irq(&np->lock);
2353 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2354 if (wol->wolopts & WAKE_PHY)
2355 cfg3 |= Cfg3_LinkUp;
2356 if (wol->wolopts & WAKE_MAGIC)
2358 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2359 RTL_W8 (Config3, cfg3);
2360 RTL_W8 (Cfg9346, Cfg9346_Lock);
2362 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2363 /* (KON)FIXME: These are untested. We may have to set the
2364 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2366 if (wol->wolopts & WAKE_UCAST)
2368 if (wol->wolopts & WAKE_MCAST)
2370 if (wol->wolopts & WAKE_BCAST)
2372 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2373 spin_unlock_irq(&np->lock);
2378 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2380 struct rtl8139_private *np = netdev_priv(dev);
2381 strcpy(info->driver, DRV_NAME);
2382 strcpy(info->version, DRV_VERSION);
2383 strcpy(info->bus_info, pci_name(np->pci_dev));
2384 info->regdump_len = np->regs_len;
2387 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2389 struct rtl8139_private *np = netdev_priv(dev);
2390 spin_lock_irq(&np->lock);
2391 mii_ethtool_gset(&np->mii, cmd);
2392 spin_unlock_irq(&np->lock);
2396 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2398 struct rtl8139_private *np = netdev_priv(dev);
2400 spin_lock_irq(&np->lock);
2401 rc = mii_ethtool_sset(&np->mii, cmd);
2402 spin_unlock_irq(&np->lock);
2406 static int rtl8139_nway_reset(struct net_device *dev)
2408 struct rtl8139_private *np = netdev_priv(dev);
2409 return mii_nway_restart(&np->mii);
2412 static u32 rtl8139_get_link(struct net_device *dev)
2414 struct rtl8139_private *np = netdev_priv(dev);
2415 return mii_link_ok(&np->mii);
2418 static u32 rtl8139_get_msglevel(struct net_device *dev)
2420 struct rtl8139_private *np = netdev_priv(dev);
2421 return np->msg_enable;
2424 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2426 struct rtl8139_private *np = netdev_priv(dev);
2427 np->msg_enable = datum;
2430 /* TODO: we are too slack to do reg dumping for pio, for now */
2431 #ifdef CONFIG_8139TOO_PIO
2432 #define rtl8139_get_regs_len NULL
2433 #define rtl8139_get_regs NULL
2435 static int rtl8139_get_regs_len(struct net_device *dev)
2437 struct rtl8139_private *np = netdev_priv(dev);
2438 return np->regs_len;
2441 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2443 struct rtl8139_private *np = netdev_priv(dev);
2445 regs->version = RTL_REGS_VER;
2447 spin_lock_irq(&np->lock);
2448 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2449 spin_unlock_irq(&np->lock);
2451 #endif /* CONFIG_8139TOO_MMIO */
2453 static int rtl8139_get_stats_count(struct net_device *dev)
2455 return RTL_NUM_STATS;
2458 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2460 struct rtl8139_private *np = netdev_priv(dev);
2462 data[0] = np->xstats.early_rx;
2463 data[1] = np->xstats.tx_buf_mapped;
2464 data[2] = np->xstats.tx_timeouts;
2465 data[3] = np->xstats.rx_lost_in_ring;
2468 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2470 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2473 static struct ethtool_ops rtl8139_ethtool_ops = {
2474 .get_drvinfo = rtl8139_get_drvinfo,
2475 .get_settings = rtl8139_get_settings,
2476 .set_settings = rtl8139_set_settings,
2477 .get_regs_len = rtl8139_get_regs_len,
2478 .get_regs = rtl8139_get_regs,
2479 .nway_reset = rtl8139_nway_reset,
2480 .get_link = rtl8139_get_link,
2481 .get_msglevel = rtl8139_get_msglevel,
2482 .set_msglevel = rtl8139_set_msglevel,
2483 .get_wol = rtl8139_get_wol,
2484 .set_wol = rtl8139_set_wol,
2485 .get_strings = rtl8139_get_strings,
2486 .get_stats_count = rtl8139_get_stats_count,
2487 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2490 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2492 struct rtl8139_private *np = netdev_priv(dev);
2495 if (!netif_running(dev))
2498 spin_lock_irq(&np->lock);
2499 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2500 spin_unlock_irq(&np->lock);
2506 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2508 struct rtl8139_private *tp = netdev_priv(dev);
2509 void *ioaddr = tp->mmio_addr;
2510 unsigned long flags;
2512 if (netif_running(dev)) {
2513 spin_lock_irqsave (&tp->lock, flags);
2514 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2515 RTL_W32 (RxMissed, 0);
2516 spin_unlock_irqrestore (&tp->lock, flags);
2522 /* Set or clear the multicast filter for this adaptor.
2523 This routine is not state sensitive and need not be SMP locked. */
2525 static void __set_rx_mode (struct net_device *dev)
2527 struct rtl8139_private *tp = netdev_priv(dev);
2528 void *ioaddr = tp->mmio_addr;
2529 u32 mc_filter[2]; /* Multicast hash filter */
2533 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2534 dev->name, dev->flags, RTL_R32 (RxConfig));
2536 /* Note: do not reorder, GCC is clever about common statements. */
2537 if (dev->flags & IFF_PROMISC) {
2538 /* Unconditionally log net taps. */
2539 printk (KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2542 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2544 mc_filter[1] = mc_filter[0] = 0xffffffff;
2545 } else if ((dev->mc_count > multicast_filter_limit)
2546 || (dev->flags & IFF_ALLMULTI)) {
2547 /* Too many to filter perfectly -- accept all multicasts. */
2548 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2549 mc_filter[1] = mc_filter[0] = 0xffffffff;
2551 struct dev_mc_list *mclist;
2552 rx_mode = AcceptBroadcast | AcceptMyPhys;
2553 mc_filter[1] = mc_filter[0] = 0;
2554 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2555 i++, mclist = mclist->next) {
2556 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2558 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2559 rx_mode |= AcceptMulticast;
2563 /* We can safely update without stopping the chip. */
2564 tmp = rtl8139_rx_config | rx_mode;
2565 if (tp->rx_config != tmp) {
2566 RTL_W32_F (RxConfig, tmp);
2567 tp->rx_config = tmp;
2569 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2570 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2573 static void rtl8139_set_rx_mode (struct net_device *dev)
2575 unsigned long flags;
2576 struct rtl8139_private *tp = netdev_priv(dev);
2578 spin_lock_irqsave (&tp->lock, flags);
2580 spin_unlock_irqrestore (&tp->lock, flags);
2585 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2587 struct net_device *dev = pci_get_drvdata (pdev);
2588 struct rtl8139_private *tp = netdev_priv(dev);
2589 void *ioaddr = tp->mmio_addr;
2590 unsigned long flags;
2592 pci_save_state (pdev);
2594 if (!netif_running (dev))
2597 netif_device_detach (dev);
2599 spin_lock_irqsave (&tp->lock, flags);
2601 /* Disable interrupts, stop Tx and Rx. */
2602 RTL_W16 (IntrMask, 0);
2603 RTL_W8 (ChipCmd, 0);
2605 /* Update the error counts. */
2606 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2607 RTL_W32 (RxMissed, 0);
2609 spin_unlock_irqrestore (&tp->lock, flags);
2611 pci_set_power_state (pdev, PCI_D3hot);
2617 static int rtl8139_resume (struct pci_dev *pdev)
2619 struct net_device *dev = pci_get_drvdata (pdev);
2621 pci_restore_state (pdev);
2622 if (!netif_running (dev))
2624 pci_set_power_state (pdev, PCI_D0);
2625 rtl8139_init_ring (dev);
2626 rtl8139_hw_start (dev);
2627 netif_device_attach (dev);
2631 #endif /* CONFIG_PM */
2634 static struct pci_driver rtl8139_pci_driver = {
2636 .id_table = rtl8139_pci_tbl,
2637 .probe = rtl8139_init_one,
2638 .remove = __devexit_p(rtl8139_remove_one),
2640 .suspend = rtl8139_suspend,
2641 .resume = rtl8139_resume,
2642 #endif /* CONFIG_PM */
2646 static int __init rtl8139_init_module (void)
2648 /* when we're a module, we always print a version message,
2649 * even if no 8139 board is found.
2652 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2655 return pci_module_init (&rtl8139_pci_driver);
2659 static void __exit rtl8139_cleanup_module (void)
2661 pci_unregister_driver (&rtl8139_pci_driver);
2665 module_init(rtl8139_init_module);
2666 module_exit(rtl8139_cleanup_module);