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/module.h>
97 #include <linux/kernel.h>
98 #include <linux/compiler.h>
99 #include <linux/pci.h>
100 #include <linux/init.h>
101 #include <linux/ioport.h>
102 #include <linux/netdevice.h>
103 #include <linux/etherdevice.h>
104 #include <linux/rtnetlink.h>
105 #include <linux/delay.h>
106 #include <linux/ethtool.h>
107 #include <linux/mii.h>
108 #include <linux/completion.h>
109 #include <linux/crc32.h>
111 #include <asm/uaccess.h>
114 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
115 #define PFX DRV_NAME ": "
117 /* Default Message level */
118 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
123 /* enable PIO instead of MMIO, if CONFIG_8139TOO_PIO is selected */
124 #ifdef CONFIG_8139TOO_PIO
128 /* define to 1, 2 or 3 to enable copious debugging info */
129 #define RTL8139_DEBUG 0
131 /* define to 1 to disable lightweight runtime debugging checks */
132 #undef RTL8139_NDEBUG
136 /* note: prints function name for you */
137 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
139 # define DPRINTK(fmt, args...)
142 #ifdef RTL8139_NDEBUG
143 # define assert(expr) do {} while (0)
145 # define assert(expr) \
146 if(unlikely(!(expr))) { \
147 printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
148 #expr,__FILE__,__FUNCTION__,__LINE__); \
153 /* A few user-configurable values. */
156 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
157 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
159 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
160 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
161 static int multicast_filter_limit = 32;
163 /* bitmapped message enable number */
164 static int debug = -1;
168 * Warning: 64K ring has hardware issues and may lock up.
170 #if defined(CONFIG_SH_DREAMCAST)
171 #define RX_BUF_IDX 1 /* 16K ring */
173 #define RX_BUF_IDX 2 /* 32K ring */
175 #define RX_BUF_LEN (8192 << RX_BUF_IDX)
176 #define RX_BUF_PAD 16
177 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
179 #if RX_BUF_LEN == 65536
180 #define RX_BUF_TOT_LEN RX_BUF_LEN
182 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
185 /* Number of Tx descriptor registers. */
186 #define NUM_TX_DESC 4
188 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
189 #define MAX_ETH_FRAME_SIZE 1536
191 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
192 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
193 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
195 /* PCI Tuning Parameters
196 Threshold is bytes transferred to chip before transmission starts. */
197 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
199 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
200 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
201 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */
202 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
203 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */
205 /* Operational parameters that usually are not changed. */
206 /* Time in jiffies before concluding the transmitter is hung. */
207 #define TX_TIMEOUT (6*HZ)
211 HAS_MII_XCVR = 0x010000,
212 HAS_CHIP_XCVR = 0x020000,
213 HAS_LNK_CHNG = 0x040000,
216 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */
217 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */
218 #define RTL_MIN_IO_SIZE 0x80
219 #define RTL8139B_IO_SIZE 256
221 #define RTL8129_CAPS HAS_MII_XCVR
222 #define RTL8139_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG
230 /* indexed by board_t, above */
231 static const struct {
234 } board_info[] __devinitdata = {
235 { "RealTek RTL8139", RTL8139_CAPS },
236 { "RealTek RTL8129", RTL8129_CAPS },
240 static struct pci_device_id rtl8139_pci_tbl[] = {
241 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
242 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
243 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
244 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
245 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
246 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
247 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
248 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
249 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
250 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
251 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
252 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
253 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
254 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
255 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
256 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
257 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
258 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
259 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
261 #ifdef CONFIG_SH_SECUREEDGE5410
262 /* Bogus 8139 silicon reports 8129 without external PROM :-( */
263 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
265 #ifdef CONFIG_8139TOO_8129
266 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 },
269 /* some crazy cards report invalid vendor ids like
270 * 0x0001 here. The other ids are valid and constant,
271 * so we simply don't match on the main vendor id.
273 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 },
274 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 },
275 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 },
279 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl);
282 const char str[ETH_GSTRING_LEN];
283 } ethtool_stats_keys[] = {
287 { "rx_lost_in_ring" },
290 /* The rest of these values should never change. */
292 /* Symbolic offsets to registers. */
293 enum RTL8139_registers {
294 MAC0 = 0, /* Ethernet hardware address. */
295 MAR0 = 8, /* Multicast filter. */
296 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
297 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
306 Timer = 0x48, /* A general-purpose counter. */
307 RxMissed = 0x4C, /* 24 bits valid, write clears. */
314 Config4 = 0x5A, /* absent on RTL-8139A */
318 BasicModeCtrl = 0x62,
319 BasicModeStatus = 0x64,
322 NWayExpansion = 0x6A,
323 /* Undocumented registers, but required for proper operation. */
324 FIFOTMS = 0x70, /* FIFO Control and test. */
325 CSCR = 0x74, /* Chip Status and Configuration Register. */
327 PARA7c = 0x7c, /* Magic transceiver parameter register. */
328 Config5 = 0xD8, /* absent on RTL-8139A */
332 MultiIntrClear = 0xF000,
334 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
344 /* Interrupt register bits, using my own meaningful names. */
345 enum IntrStatusBits {
356 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
363 TxOutOfWindow = 0x20000000,
364 TxAborted = 0x40000000,
365 TxCarrierLost = 0x80000000,
368 RxMulticast = 0x8000,
370 RxBroadcast = 0x2000,
371 RxBadSymbol = 0x0020,
379 /* Bits in RxConfig. */
383 AcceptBroadcast = 0x08,
384 AcceptMulticast = 0x04,
386 AcceptAllPhys = 0x01,
389 /* Bits in TxConfig. */
390 enum tx_config_bits {
392 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
394 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
395 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
396 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
397 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
399 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
400 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
401 TxClearAbt = (1 << 0), /* Clear abort (WO) */
402 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
403 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
405 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
408 /* Bits in Config1 */
410 Cfg1_PM_Enable = 0x01,
411 Cfg1_VPD_Enable = 0x02,
414 LWAKE = 0x10, /* not on 8139, 8139A */
415 Cfg1_Driver_Load = 0x20,
418 SLEEP = (1 << 1), /* only on 8139, 8139A */
419 PWRDN = (1 << 0), /* only on 8139, 8139A */
422 /* Bits in Config3 */
424 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
425 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
426 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
427 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
428 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
429 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
430 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
431 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
434 /* Bits in Config4 */
436 LWPTN = (1 << 2), /* not on 8139, 8139A */
439 /* Bits in Config5 */
441 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
442 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
443 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
444 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
445 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
446 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
447 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
451 /* rx fifo threshold */
453 RxCfgFIFONone = (7 << RxCfgFIFOShift),
457 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
459 /* rx ring buffer length */
461 RxCfgRcv16K = (1 << 11),
462 RxCfgRcv32K = (1 << 12),
463 RxCfgRcv64K = (1 << 11) | (1 << 12),
465 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
469 /* Twister tuning parameters from RealTek.
470 Completely undocumented, but required to tune bad links on some boards. */
472 CSCR_LinkOKBit = 0x0400,
473 CSCR_LinkChangeBit = 0x0800,
474 CSCR_LinkStatusBits = 0x0f000,
475 CSCR_LinkDownOffCmd = 0x003c0,
476 CSCR_LinkDownCmd = 0x0f3c0,
481 Cfg9346_Unlock = 0xC0,
498 HasHltClk = (1 << 0),
502 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
503 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
504 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
506 /* directly indexed by chip_t, above */
507 static const struct {
509 u32 version; /* from RTL8139C/RTL8139D docs */
511 } rtl_chip_info[] = {
513 HW_REVID(1, 0, 0, 0, 0, 0, 0),
518 HW_REVID(1, 1, 0, 0, 0, 0, 0),
523 HW_REVID(1, 1, 1, 0, 0, 0, 0),
524 HasHltClk, /* XXX undocumented? */
528 HW_REVID(1, 1, 1, 0, 0, 1, 0),
529 HasHltClk, /* XXX undocumented? */
533 HW_REVID(1, 1, 1, 1, 0, 0, 0),
538 HW_REVID(1, 1, 1, 1, 1, 0, 0),
543 HW_REVID(1, 1, 1, 0, 1, 0, 0),
548 HW_REVID(1, 1, 1, 1, 0, 1, 0),
553 HW_REVID(1, 1, 1, 0, 1, 0, 1),
554 HasHltClk /* XXX undocumented? */
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 {
572 void __iomem *mmio_addr;
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 watchdog_fired : 1;
589 unsigned int default_port : 4; /* Last dev->if_port value. */
590 unsigned int have_thread : 1;
595 struct rtl_extra_stats xstats;
597 struct work_struct thread;
599 struct mii_if_info mii;
600 unsigned int regs_len;
601 unsigned long fifo_copy_timeout;
604 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
605 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
606 MODULE_LICENSE("GPL");
607 MODULE_VERSION(DRV_VERSION);
609 module_param(multicast_filter_limit, int, 0);
610 module_param_array(media, int, NULL, 0);
611 module_param_array(full_duplex, int, NULL, 0);
612 module_param(debug, int, 0);
613 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
614 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
615 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
616 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
618 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
619 static int rtl8139_open (struct net_device *dev);
620 static int mdio_read (struct net_device *dev, int phy_id, int location);
621 static void mdio_write (struct net_device *dev, int phy_id, int location,
623 static void rtl8139_start_thread(struct rtl8139_private *tp);
624 static void rtl8139_tx_timeout (struct net_device *dev);
625 static void rtl8139_init_ring (struct net_device *dev);
626 static int rtl8139_start_xmit (struct sk_buff *skb,
627 struct net_device *dev);
628 static int rtl8139_poll(struct net_device *dev, int *budget);
629 #ifdef CONFIG_NET_POLL_CONTROLLER
630 static void rtl8139_poll_controller(struct net_device *dev);
632 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
633 struct pt_regs *regs);
634 static int rtl8139_close (struct net_device *dev);
635 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
636 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
637 static void rtl8139_set_rx_mode (struct net_device *dev);
638 static void __set_rx_mode (struct net_device *dev);
639 static void rtl8139_hw_start (struct net_device *dev);
640 static void rtl8139_thread (void *_data);
641 static void rtl8139_tx_timeout_task(void *_data);
642 static struct ethtool_ops rtl8139_ethtool_ops;
644 /* write MMIO register, with flush */
645 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
646 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
647 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
648 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
651 #define MMIO_FLUSH_AUDIT_COMPLETE 1
652 #if MMIO_FLUSH_AUDIT_COMPLETE
654 /* write MMIO register */
655 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
656 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
657 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
661 /* write MMIO register, then flush */
662 #define RTL_W8 RTL_W8_F
663 #define RTL_W16 RTL_W16_F
664 #define RTL_W32 RTL_W32_F
666 #endif /* MMIO_FLUSH_AUDIT_COMPLETE */
668 /* read MMIO register */
669 #define RTL_R8(reg) ioread8 (ioaddr + (reg))
670 #define RTL_R16(reg) ioread16 (ioaddr + (reg))
671 #define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
674 static const u16 rtl8139_intr_mask =
675 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
676 TxErr | TxOK | RxErr | RxOK;
678 static const u16 rtl8139_norx_intr_mask =
679 PCIErr | PCSTimeout | RxUnderrun |
680 TxErr | TxOK | RxErr ;
683 static const unsigned int rtl8139_rx_config =
684 RxCfgRcv8K | RxNoWrap |
685 (RX_FIFO_THRESH << RxCfgFIFOShift) |
686 (RX_DMA_BURST << RxCfgDMAShift);
687 #elif RX_BUF_IDX == 1
688 static const unsigned int rtl8139_rx_config =
689 RxCfgRcv16K | RxNoWrap |
690 (RX_FIFO_THRESH << RxCfgFIFOShift) |
691 (RX_DMA_BURST << RxCfgDMAShift);
692 #elif RX_BUF_IDX == 2
693 static const unsigned int rtl8139_rx_config =
694 RxCfgRcv32K | RxNoWrap |
695 (RX_FIFO_THRESH << RxCfgFIFOShift) |
696 (RX_DMA_BURST << RxCfgDMAShift);
697 #elif RX_BUF_IDX == 3
698 static const unsigned int rtl8139_rx_config =
700 (RX_FIFO_THRESH << RxCfgFIFOShift) |
701 (RX_DMA_BURST << RxCfgDMAShift);
703 #error "Invalid configuration for 8139_RXBUF_IDX"
706 static const unsigned int rtl8139_tx_config =
707 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
709 static void __rtl8139_cleanup_dev (struct net_device *dev)
711 struct rtl8139_private *tp = netdev_priv(dev);
712 struct pci_dev *pdev;
714 assert (dev != NULL);
715 assert (tp->pci_dev != NULL);
720 ioport_unmap (tp->mmio_addr);
723 pci_iounmap (pdev, tp->mmio_addr);
724 #endif /* USE_IO_OPS */
726 /* it's ok to call this even if we have no regions to free */
727 pci_release_regions (pdev);
730 pci_set_drvdata (pdev, NULL);
734 static void rtl8139_chip_reset (void __iomem *ioaddr)
738 /* Soft reset the chip. */
739 RTL_W8 (ChipCmd, CmdReset);
741 /* Check that the chip has finished the reset. */
742 for (i = 1000; i > 0; i--) {
744 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
751 static int __devinit rtl8139_init_board (struct pci_dev *pdev,
752 struct net_device **dev_out)
754 void __iomem *ioaddr;
755 struct net_device *dev;
756 struct rtl8139_private *tp;
758 int rc, disable_dev_on_err = 0;
760 unsigned long pio_start, pio_end, pio_flags, pio_len;
761 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
764 assert (pdev != NULL);
768 /* dev and priv zeroed in alloc_etherdev */
769 dev = alloc_etherdev (sizeof (*tp));
771 dev_err(&pdev->dev, "Unable to alloc new net device\n");
774 SET_MODULE_OWNER(dev);
775 SET_NETDEV_DEV(dev, &pdev->dev);
777 tp = netdev_priv(dev);
780 /* enable device (incl. PCI PM wakeup and hotplug setup) */
781 rc = pci_enable_device (pdev);
785 pio_start = pci_resource_start (pdev, 0);
786 pio_end = pci_resource_end (pdev, 0);
787 pio_flags = pci_resource_flags (pdev, 0);
788 pio_len = pci_resource_len (pdev, 0);
790 mmio_start = pci_resource_start (pdev, 1);
791 mmio_end = pci_resource_end (pdev, 1);
792 mmio_flags = pci_resource_flags (pdev, 1);
793 mmio_len = pci_resource_len (pdev, 1);
795 /* set this immediately, we need to know before
796 * we talk to the chip directly */
797 DPRINTK("PIO region size == 0x%02X\n", pio_len);
798 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
801 /* make sure PCI base addr 0 is PIO */
802 if (!(pio_flags & IORESOURCE_IO)) {
803 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
807 /* check for weird/broken PCI region reporting */
808 if (pio_len < RTL_MIN_IO_SIZE) {
809 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
814 /* make sure PCI base addr 1 is MMIO */
815 if (!(mmio_flags & IORESOURCE_MEM)) {
816 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
820 if (mmio_len < RTL_MIN_IO_SIZE) {
821 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
827 rc = pci_request_regions (pdev, DRV_NAME);
830 disable_dev_on_err = 1;
832 /* enable PCI bus-mastering */
833 pci_set_master (pdev);
836 ioaddr = ioport_map(pio_start, pio_len);
838 dev_err(&pdev->dev, "cannot map PIO, aborting\n");
842 dev->base_addr = pio_start;
843 tp->mmio_addr = ioaddr;
844 tp->regs_len = pio_len;
846 /* ioremap MMIO region */
847 ioaddr = pci_iomap(pdev, 1, 0);
848 if (ioaddr == NULL) {
849 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
853 dev->base_addr = (long) ioaddr;
854 tp->mmio_addr = ioaddr;
855 tp->regs_len = mmio_len;
856 #endif /* USE_IO_OPS */
858 /* Bring old chips out of low-power mode. */
859 RTL_W8 (HltClk, 'R');
861 /* check for missing/broken hardware */
862 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
863 dev_err(&pdev->dev, "Chip not responding, ignoring board\n");
868 /* identify chip attached to board */
869 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
870 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
871 if (version == rtl_chip_info[i].version) {
876 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
877 dev_printk (KERN_DEBUG, &pdev->dev,
878 "unknown chip version, assuming RTL-8139\n");
879 dev_printk (KERN_DEBUG, &pdev->dev,
880 "TxConfig = 0x%lx\n", RTL_R32 (TxConfig));
884 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
885 version, i, rtl_chip_info[i].name);
887 if (tp->chipset >= CH_8139B) {
888 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
889 DPRINTK("PCI PM wakeup\n");
890 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
893 new_tmp8 |= Cfg1_PM_Enable;
894 if (new_tmp8 != tmp8) {
895 RTL_W8 (Cfg9346, Cfg9346_Unlock);
896 RTL_W8 (Config1, tmp8);
897 RTL_W8 (Cfg9346, Cfg9346_Lock);
899 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
900 tmp8 = RTL_R8 (Config4);
902 RTL_W8 (Cfg9346, Cfg9346_Unlock);
903 RTL_W8 (Config4, tmp8 & ~LWPTN);
904 RTL_W8 (Cfg9346, Cfg9346_Lock);
908 DPRINTK("Old chip wakeup\n");
909 tmp8 = RTL_R8 (Config1);
910 tmp8 &= ~(SLEEP | PWRDN);
911 RTL_W8 (Config1, tmp8);
914 rtl8139_chip_reset (ioaddr);
920 __rtl8139_cleanup_dev (dev);
921 if (disable_dev_on_err)
922 pci_disable_device (pdev);
927 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
928 const struct pci_device_id *ent)
930 struct net_device *dev = NULL;
931 struct rtl8139_private *tp;
932 int i, addr_len, option;
933 void __iomem *ioaddr;
934 static int board_idx = -1;
937 assert (pdev != NULL);
938 assert (ent != NULL);
942 /* when we're built into the kernel, the driver version message
943 * is only printed if at least one 8139 board has been found
947 static int printed_version;
948 if (!printed_version++)
949 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
953 pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
955 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
956 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev >= 0x20) {
958 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
959 pdev->vendor, pdev->device, pci_rev);
961 "Use the \"8139cp\" driver for improved performance and stability.\n");
964 i = rtl8139_init_board (pdev, &dev);
968 assert (dev != NULL);
969 tp = netdev_priv(dev);
971 ioaddr = tp->mmio_addr;
972 assert (ioaddr != NULL);
974 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
975 for (i = 0; i < 3; i++)
976 ((u16 *) (dev->dev_addr))[i] =
977 le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len));
978 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
980 /* The Rtl8139-specific entries in the device structure. */
981 dev->open = rtl8139_open;
982 dev->hard_start_xmit = rtl8139_start_xmit;
983 dev->poll = rtl8139_poll;
985 dev->stop = rtl8139_close;
986 dev->get_stats = rtl8139_get_stats;
987 dev->set_multicast_list = rtl8139_set_rx_mode;
988 dev->do_ioctl = netdev_ioctl;
989 dev->ethtool_ops = &rtl8139_ethtool_ops;
990 dev->tx_timeout = rtl8139_tx_timeout;
991 dev->watchdog_timeo = TX_TIMEOUT;
992 #ifdef CONFIG_NET_POLL_CONTROLLER
993 dev->poll_controller = rtl8139_poll_controller;
996 /* note: the hardware is not capable of sg/csum/highdma, however
997 * through the use of skb_copy_and_csum_dev we enable these
1000 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
1002 dev->irq = pdev->irq;
1004 /* tp zeroed and aligned in alloc_etherdev */
1005 tp = netdev_priv(dev);
1007 /* note: tp->chipset set in rtl8139_init_board */
1008 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1009 tp->mmio_addr = ioaddr;
1011 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1012 spin_lock_init (&tp->lock);
1013 spin_lock_init (&tp->rx_lock);
1014 INIT_WORK(&tp->thread, rtl8139_thread, dev);
1016 tp->mii.mdio_read = mdio_read;
1017 tp->mii.mdio_write = mdio_write;
1018 tp->mii.phy_id_mask = 0x3f;
1019 tp->mii.reg_num_mask = 0x1f;
1021 /* dev is fully set up and ready to use now */
1022 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1023 i = register_netdev (dev);
1024 if (i) goto err_out;
1026 pci_set_drvdata (pdev, dev);
1028 printk (KERN_INFO "%s: %s at 0x%lx, "
1029 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1032 board_info[ent->driver_data].name,
1034 dev->dev_addr[0], dev->dev_addr[1],
1035 dev->dev_addr[2], dev->dev_addr[3],
1036 dev->dev_addr[4], dev->dev_addr[5],
1039 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
1040 dev->name, rtl_chip_info[tp->chipset].name);
1042 /* Find the connected MII xcvrs.
1043 Doing this in open() would allow detecting external xcvrs later, but
1044 takes too much time. */
1045 #ifdef CONFIG_8139TOO_8129
1046 if (tp->drv_flags & HAS_MII_XCVR) {
1047 int phy, phy_idx = 0;
1048 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1049 int mii_status = mdio_read(dev, phy, 1);
1050 if (mii_status != 0xffff && mii_status != 0x0000) {
1051 u16 advertising = mdio_read(dev, phy, 4);
1052 tp->phys[phy_idx++] = phy;
1053 printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x "
1054 "advertising %4.4x.\n",
1055 dev->name, phy, mii_status, advertising);
1059 printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
1067 tp->mii.phy_id = tp->phys[0];
1069 /* The lower four bits are the media type. */
1070 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1072 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1073 tp->default_port = option & 0xFF;
1074 if (tp->default_port)
1075 tp->mii.force_media = 1;
1077 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1078 tp->mii.full_duplex = full_duplex[board_idx];
1079 if (tp->mii.full_duplex) {
1080 printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
1081 /* Changing the MII-advertised media because might prevent
1083 tp->mii.force_media = 1;
1085 if (tp->default_port) {
1086 printk(KERN_INFO " Forcing %dMbps %s-duplex operation.\n",
1087 (option & 0x20 ? 100 : 10),
1088 (option & 0x10 ? "full" : "half"));
1089 mdio_write(dev, tp->phys[0], 0,
1090 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1091 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1094 /* Put the chip into low-power mode. */
1095 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1096 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1101 __rtl8139_cleanup_dev (dev);
1102 pci_disable_device (pdev);
1107 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1109 struct net_device *dev = pci_get_drvdata (pdev);
1111 assert (dev != NULL);
1113 unregister_netdev (dev);
1115 __rtl8139_cleanup_dev (dev);
1116 pci_disable_device (pdev);
1120 /* Serial EEPROM section. */
1122 /* EEPROM_Ctrl bits. */
1123 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1124 #define EE_CS 0x08 /* EEPROM chip select. */
1125 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1126 #define EE_WRITE_0 0x00
1127 #define EE_WRITE_1 0x02
1128 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1129 #define EE_ENB (0x80 | EE_CS)
1131 /* Delay between EEPROM clock transitions.
1132 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1135 #define eeprom_delay() (void)RTL_R32(Cfg9346)
1137 /* The EEPROM commands include the alway-set leading bit. */
1138 #define EE_WRITE_CMD (5)
1139 #define EE_READ_CMD (6)
1140 #define EE_ERASE_CMD (7)
1142 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1145 unsigned retval = 0;
1146 int read_cmd = location | (EE_READ_CMD << addr_len);
1148 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1149 RTL_W8 (Cfg9346, EE_ENB);
1152 /* Shift the read command bits out. */
1153 for (i = 4 + addr_len; i >= 0; i--) {
1154 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1155 RTL_W8 (Cfg9346, EE_ENB | dataval);
1157 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1160 RTL_W8 (Cfg9346, EE_ENB);
1163 for (i = 16; i > 0; i--) {
1164 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1167 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1169 RTL_W8 (Cfg9346, EE_ENB);
1173 /* Terminate the EEPROM access. */
1174 RTL_W8 (Cfg9346, ~EE_CS);
1180 /* MII serial management: mostly bogus for now. */
1181 /* Read and write the MII management registers using software-generated
1182 serial MDIO protocol.
1183 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1184 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1185 "overclocking" issues. */
1186 #define MDIO_DIR 0x80
1187 #define MDIO_DATA_OUT 0x04
1188 #define MDIO_DATA_IN 0x02
1189 #define MDIO_CLK 0x01
1190 #define MDIO_WRITE0 (MDIO_DIR)
1191 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1193 #define mdio_delay() RTL_R8(Config4)
1196 static const char mii_2_8139_map[8] = {
1208 #ifdef CONFIG_8139TOO_8129
1209 /* Syncronize the MII management interface by shifting 32 one bits out. */
1210 static void mdio_sync (void __iomem *ioaddr)
1214 for (i = 32; i >= 0; i--) {
1215 RTL_W8 (Config4, MDIO_WRITE1);
1217 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1223 static int mdio_read (struct net_device *dev, int phy_id, int location)
1225 struct rtl8139_private *tp = netdev_priv(dev);
1227 #ifdef CONFIG_8139TOO_8129
1228 void __iomem *ioaddr = tp->mmio_addr;
1229 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1233 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1234 void __iomem *ioaddr = tp->mmio_addr;
1235 return location < 8 && mii_2_8139_map[location] ?
1236 RTL_R16 (mii_2_8139_map[location]) : 0;
1239 #ifdef CONFIG_8139TOO_8129
1241 /* Shift the read command bits out. */
1242 for (i = 15; i >= 0; i--) {
1243 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1245 RTL_W8 (Config4, MDIO_DIR | dataval);
1247 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1251 /* Read the two transition, 16 data, and wire-idle bits. */
1252 for (i = 19; i > 0; i--) {
1253 RTL_W8 (Config4, 0);
1255 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1256 RTL_W8 (Config4, MDIO_CLK);
1261 return (retval >> 1) & 0xffff;
1265 static void mdio_write (struct net_device *dev, int phy_id, int location,
1268 struct rtl8139_private *tp = netdev_priv(dev);
1269 #ifdef CONFIG_8139TOO_8129
1270 void __iomem *ioaddr = tp->mmio_addr;
1271 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1275 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1276 void __iomem *ioaddr = tp->mmio_addr;
1277 if (location == 0) {
1278 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1279 RTL_W16 (BasicModeCtrl, value);
1280 RTL_W8 (Cfg9346, Cfg9346_Lock);
1281 } else if (location < 8 && mii_2_8139_map[location])
1282 RTL_W16 (mii_2_8139_map[location], value);
1286 #ifdef CONFIG_8139TOO_8129
1289 /* Shift the command bits out. */
1290 for (i = 31; i >= 0; i--) {
1292 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1293 RTL_W8 (Config4, dataval);
1295 RTL_W8 (Config4, dataval | MDIO_CLK);
1298 /* Clear out extra bits. */
1299 for (i = 2; i > 0; i--) {
1300 RTL_W8 (Config4, 0);
1302 RTL_W8 (Config4, MDIO_CLK);
1309 static int rtl8139_open (struct net_device *dev)
1311 struct rtl8139_private *tp = netdev_priv(dev);
1313 void __iomem *ioaddr = tp->mmio_addr;
1315 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev);
1319 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1321 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1323 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1324 free_irq(dev->irq, dev);
1327 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1328 tp->tx_bufs, tp->tx_bufs_dma);
1330 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1331 tp->rx_ring, tp->rx_ring_dma);
1337 tp->mii.full_duplex = tp->mii.force_media;
1338 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1340 rtl8139_init_ring (dev);
1341 rtl8139_hw_start (dev);
1342 netif_start_queue (dev);
1344 if (netif_msg_ifup(tp))
1345 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#llx IRQ %d"
1346 " GP Pins %2.2x %s-duplex.\n", dev->name,
1347 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1348 dev->irq, RTL_R8 (MediaStatus),
1349 tp->mii.full_duplex ? "full" : "half");
1351 rtl8139_start_thread(tp);
1357 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1359 struct rtl8139_private *tp = netdev_priv(dev);
1361 if (tp->phys[0] >= 0) {
1362 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1366 /* Start the hardware at open or resume. */
1367 static void rtl8139_hw_start (struct net_device *dev)
1369 struct rtl8139_private *tp = netdev_priv(dev);
1370 void __iomem *ioaddr = tp->mmio_addr;
1374 /* Bring old chips out of low-power mode. */
1375 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1376 RTL_W8 (HltClk, 'R');
1378 rtl8139_chip_reset (ioaddr);
1380 /* unlock Config[01234] and BMCR register writes */
1381 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1382 /* Restore our idea of the MAC address. */
1383 RTL_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1384 RTL_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1386 /* Must enable Tx/Rx before setting transfer thresholds! */
1387 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1389 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1390 RTL_W32 (RxConfig, tp->rx_config);
1391 RTL_W32 (TxConfig, rtl8139_tx_config);
1395 rtl_check_media (dev, 1);
1397 if (tp->chipset >= CH_8139B) {
1398 /* Disable magic packet scanning, which is enabled
1399 * when PM is enabled in Config1. It can be reenabled
1400 * via ETHTOOL_SWOL if desired. */
1401 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1404 DPRINTK("init buffer addresses\n");
1406 /* Lock Config[01234] and BMCR register writes */
1407 RTL_W8 (Cfg9346, Cfg9346_Lock);
1409 /* init Rx ring buffer DMA address */
1410 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1412 /* init Tx buffer DMA addresses */
1413 for (i = 0; i < NUM_TX_DESC; i++)
1414 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1416 RTL_W32 (RxMissed, 0);
1418 rtl8139_set_rx_mode (dev);
1420 /* no early-rx interrupts */
1421 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1423 /* make sure RxTx has started */
1424 tmp = RTL_R8 (ChipCmd);
1425 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1426 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1428 /* Enable all known interrupts by setting the interrupt mask. */
1429 RTL_W16 (IntrMask, rtl8139_intr_mask);
1433 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1434 static void rtl8139_init_ring (struct net_device *dev)
1436 struct rtl8139_private *tp = netdev_priv(dev);
1443 for (i = 0; i < NUM_TX_DESC; i++)
1444 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1448 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1449 static int next_tick = 3 * HZ;
1451 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1452 static inline void rtl8139_tune_twister (struct net_device *dev,
1453 struct rtl8139_private *tp) {}
1455 enum TwisterParamVals {
1456 PARA78_default = 0x78fa8388,
1457 PARA7c_default = 0xcb38de43, /* param[0][3] */
1458 PARA7c_xxx = 0xcb38de43,
1461 static const unsigned long param[4][4] = {
1462 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1463 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1464 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1465 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1468 static void rtl8139_tune_twister (struct net_device *dev,
1469 struct rtl8139_private *tp)
1472 void __iomem *ioaddr = tp->mmio_addr;
1474 /* This is a complicated state machine to configure the "twister" for
1475 impedance/echos based on the cable length.
1476 All of this is magic and undocumented.
1478 switch (tp->twistie) {
1480 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1481 /* We have link beat, let us tune the twister. */
1482 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1483 tp->twistie = 2; /* Change to state 2. */
1484 next_tick = HZ / 10;
1486 /* Just put in some reasonable defaults for when beat returns. */
1487 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1488 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1489 RTL_W32 (PARA78, PARA78_default);
1490 RTL_W32 (PARA7c, PARA7c_default);
1491 tp->twistie = 0; /* Bail from future actions. */
1495 /* Read how long it took to hear the echo. */
1496 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1497 if (linkcase == 0x7000)
1499 else if (linkcase == 0x3000)
1501 else if (linkcase == 0x1000)
1506 tp->twistie = 3; /* Change to state 2. */
1507 next_tick = HZ / 10;
1510 /* Put out four tuning parameters, one per 100msec. */
1511 if (tp->twist_col == 0)
1512 RTL_W16 (FIFOTMS, 0);
1513 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1514 [(int) tp->twist_col]);
1515 next_tick = HZ / 10;
1516 if (++tp->twist_col >= 4) {
1517 /* For short cables we are done.
1518 For long cables (row == 3) check for mistune. */
1520 (tp->twist_row == 3) ? 4 : 0;
1524 /* Special case for long cables: check for mistune. */
1525 if ((RTL_R16 (CSCR) &
1526 CSCR_LinkStatusBits) == 0x7000) {
1530 RTL_W32 (PARA7c, 0xfb38de03);
1532 next_tick = HZ / 10;
1536 /* Retune for shorter cable (column 2). */
1537 RTL_W32 (FIFOTMS, 0x20);
1538 RTL_W32 (PARA78, PARA78_default);
1539 RTL_W32 (PARA7c, PARA7c_default);
1540 RTL_W32 (FIFOTMS, 0x00);
1544 next_tick = HZ / 10;
1552 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1554 static inline void rtl8139_thread_iter (struct net_device *dev,
1555 struct rtl8139_private *tp,
1556 void __iomem *ioaddr)
1560 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1562 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1563 int duplex = (mii_lpa & LPA_100FULL)
1564 || (mii_lpa & 0x01C0) == 0x0040;
1565 if (tp->mii.full_duplex != duplex) {
1566 tp->mii.full_duplex = duplex;
1570 "%s: Setting %s-duplex based on MII #%d link"
1571 " partner ability of %4.4x.\n",
1573 tp->mii.full_duplex ? "full" : "half",
1574 tp->phys[0], mii_lpa);
1576 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1580 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1581 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1582 RTL_W8 (Cfg9346, Cfg9346_Lock);
1587 next_tick = HZ * 60;
1589 rtl8139_tune_twister (dev, tp);
1591 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1592 dev->name, RTL_R16 (NWayLPAR));
1593 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1594 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1595 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1596 dev->name, RTL_R8 (Config0),
1600 static void rtl8139_thread (void *_data)
1602 struct net_device *dev = _data;
1603 struct rtl8139_private *tp = netdev_priv(dev);
1604 unsigned long thr_delay = next_tick;
1606 if (tp->watchdog_fired) {
1607 tp->watchdog_fired = 0;
1608 rtl8139_tx_timeout_task(_data);
1609 } else if (rtnl_trylock()) {
1610 rtl8139_thread_iter (dev, tp, tp->mmio_addr);
1613 /* unlikely race. mitigate with fast poll. */
1617 schedule_delayed_work(&tp->thread, thr_delay);
1620 static void rtl8139_start_thread(struct rtl8139_private *tp)
1623 if (tp->chipset == CH_8139_K)
1625 else if (tp->drv_flags & HAS_LNK_CHNG)
1628 tp->have_thread = 1;
1630 schedule_delayed_work(&tp->thread, next_tick);
1633 static void rtl8139_stop_thread(struct rtl8139_private *tp)
1635 if (tp->have_thread) {
1636 cancel_rearming_delayed_work(&tp->thread);
1637 tp->have_thread = 0;
1639 flush_scheduled_work();
1642 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1647 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1650 static void rtl8139_tx_timeout_task (void *_data)
1652 struct net_device *dev = _data;
1653 struct rtl8139_private *tp = netdev_priv(dev);
1654 void __iomem *ioaddr = tp->mmio_addr;
1658 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1659 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1660 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1661 /* Emit info to figure out what went wrong. */
1662 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1663 dev->name, tp->cur_tx, tp->dirty_tx);
1664 for (i = 0; i < NUM_TX_DESC; i++)
1665 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1666 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1667 i == tp->dirty_tx % NUM_TX_DESC ?
1668 " (queue head)" : "");
1670 tp->xstats.tx_timeouts++;
1672 /* disable Tx ASAP, if not already */
1673 tmp8 = RTL_R8 (ChipCmd);
1674 if (tmp8 & CmdTxEnb)
1675 RTL_W8 (ChipCmd, CmdRxEnb);
1677 spin_lock_bh(&tp->rx_lock);
1678 /* Disable interrupts by clearing the interrupt mask. */
1679 RTL_W16 (IntrMask, 0x0000);
1681 /* Stop a shared interrupt from scavenging while we are. */
1682 spin_lock_irq(&tp->lock);
1683 rtl8139_tx_clear (tp);
1684 spin_unlock_irq(&tp->lock);
1686 /* ...and finally, reset everything */
1687 if (netif_running(dev)) {
1688 rtl8139_hw_start (dev);
1689 netif_wake_queue (dev);
1691 spin_unlock_bh(&tp->rx_lock);
1694 static void rtl8139_tx_timeout (struct net_device *dev)
1696 struct rtl8139_private *tp = netdev_priv(dev);
1698 if (!tp->have_thread) {
1699 INIT_WORK(&tp->thread, rtl8139_tx_timeout_task, dev);
1700 schedule_delayed_work(&tp->thread, next_tick);
1702 tp->watchdog_fired = 1;
1706 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1708 struct rtl8139_private *tp = netdev_priv(dev);
1709 void __iomem *ioaddr = tp->mmio_addr;
1711 unsigned int len = skb->len;
1713 /* Calculate the next Tx descriptor entry. */
1714 entry = tp->cur_tx % NUM_TX_DESC;
1716 /* Note: the chip doesn't have auto-pad! */
1717 if (likely(len < TX_BUF_SIZE)) {
1719 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1720 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1724 tp->stats.tx_dropped++;
1728 spin_lock_irq(&tp->lock);
1729 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1730 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1732 dev->trans_start = jiffies;
1737 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1738 netif_stop_queue (dev);
1739 spin_unlock_irq(&tp->lock);
1741 if (netif_msg_tx_queued(tp))
1742 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1743 dev->name, len, entry);
1749 static void rtl8139_tx_interrupt (struct net_device *dev,
1750 struct rtl8139_private *tp,
1751 void __iomem *ioaddr)
1753 unsigned long dirty_tx, tx_left;
1755 assert (dev != NULL);
1756 assert (ioaddr != NULL);
1758 dirty_tx = tp->dirty_tx;
1759 tx_left = tp->cur_tx - dirty_tx;
1760 while (tx_left > 0) {
1761 int entry = dirty_tx % NUM_TX_DESC;
1764 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1766 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1767 break; /* It still hasn't been Txed */
1769 /* Note: TxCarrierLost is always asserted at 100mbps. */
1770 if (txstatus & (TxOutOfWindow | TxAborted)) {
1771 /* There was an major error, log it. */
1772 if (netif_msg_tx_err(tp))
1773 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1774 dev->name, txstatus);
1775 tp->stats.tx_errors++;
1776 if (txstatus & TxAborted) {
1777 tp->stats.tx_aborted_errors++;
1778 RTL_W32 (TxConfig, TxClearAbt);
1779 RTL_W16 (IntrStatus, TxErr);
1782 if (txstatus & TxCarrierLost)
1783 tp->stats.tx_carrier_errors++;
1784 if (txstatus & TxOutOfWindow)
1785 tp->stats.tx_window_errors++;
1787 if (txstatus & TxUnderrun) {
1788 /* Add 64 to the Tx FIFO threshold. */
1789 if (tp->tx_flag < 0x00300000)
1790 tp->tx_flag += 0x00020000;
1791 tp->stats.tx_fifo_errors++;
1793 tp->stats.collisions += (txstatus >> 24) & 15;
1794 tp->stats.tx_bytes += txstatus & 0x7ff;
1795 tp->stats.tx_packets++;
1802 #ifndef RTL8139_NDEBUG
1803 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1804 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1805 dev->name, dirty_tx, tp->cur_tx);
1806 dirty_tx += NUM_TX_DESC;
1808 #endif /* RTL8139_NDEBUG */
1810 /* only wake the queue if we did work, and the queue is stopped */
1811 if (tp->dirty_tx != dirty_tx) {
1812 tp->dirty_tx = dirty_tx;
1814 netif_wake_queue (dev);
1819 /* TODO: clean this up! Rx reset need not be this intensive */
1820 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1821 struct rtl8139_private *tp, void __iomem *ioaddr)
1824 #ifdef CONFIG_8139_OLD_RX_RESET
1828 if (netif_msg_rx_err (tp))
1829 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1830 dev->name, rx_status);
1831 tp->stats.rx_errors++;
1832 if (!(rx_status & RxStatusOK)) {
1833 if (rx_status & RxTooLong) {
1834 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1835 dev->name, rx_status);
1836 /* A.C.: The chip hangs here. */
1838 if (rx_status & (RxBadSymbol | RxBadAlign))
1839 tp->stats.rx_frame_errors++;
1840 if (rx_status & (RxRunt | RxTooLong))
1841 tp->stats.rx_length_errors++;
1842 if (rx_status & RxCRCErr)
1843 tp->stats.rx_crc_errors++;
1845 tp->xstats.rx_lost_in_ring++;
1848 #ifndef CONFIG_8139_OLD_RX_RESET
1849 tmp8 = RTL_R8 (ChipCmd);
1850 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1851 RTL_W8 (ChipCmd, tmp8);
1852 RTL_W32 (RxConfig, tp->rx_config);
1855 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1857 /* disable receive */
1858 RTL_W8_F (ChipCmd, CmdTxEnb);
1860 while (--tmp_work > 0) {
1862 tmp8 = RTL_R8 (ChipCmd);
1863 if (!(tmp8 & CmdRxEnb))
1867 printk (KERN_WARNING PFX "rx stop wait too long\n");
1868 /* restart receive */
1870 while (--tmp_work > 0) {
1871 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1873 tmp8 = RTL_R8 (ChipCmd);
1874 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1878 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1880 /* and reinitialize all rx related registers */
1881 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1882 /* Must enable Tx/Rx before setting transfer thresholds! */
1883 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1885 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1886 RTL_W32 (RxConfig, tp->rx_config);
1889 DPRINTK("init buffer addresses\n");
1891 /* Lock Config[01234] and BMCR register writes */
1892 RTL_W8 (Cfg9346, Cfg9346_Lock);
1894 /* init Rx ring buffer DMA address */
1895 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1897 /* A.C.: Reset the multicast list. */
1898 __set_rx_mode (dev);
1903 static __inline__ void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1904 u32 offset, unsigned int size)
1906 u32 left = RX_BUF_LEN - offset;
1909 memcpy(skb->data, ring + offset, left);
1910 memcpy(skb->data+left, ring, size - left);
1912 memcpy(skb->data, ring + offset, size);
1916 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1918 void __iomem *ioaddr = tp->mmio_addr;
1921 status = RTL_R16 (IntrStatus) & RxAckBits;
1923 /* Clear out errors and receive interrupts */
1924 if (likely(status != 0)) {
1925 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1926 tp->stats.rx_errors++;
1927 if (status & RxFIFOOver)
1928 tp->stats.rx_fifo_errors++;
1930 RTL_W16_F (IntrStatus, RxAckBits);
1934 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1937 void __iomem *ioaddr = tp->mmio_addr;
1939 unsigned char *rx_ring = tp->rx_ring;
1940 unsigned int cur_rx = tp->cur_rx;
1941 unsigned int rx_size = 0;
1943 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1944 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1945 RTL_R16 (RxBufAddr),
1946 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1948 while (netif_running(dev) && received < budget
1949 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1950 u32 ring_offset = cur_rx % RX_BUF_LEN;
1952 unsigned int pkt_size;
1953 struct sk_buff *skb;
1957 /* read size+status of next frame from DMA ring buffer */
1958 rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset));
1959 rx_size = rx_status >> 16;
1960 pkt_size = rx_size - 4;
1962 if (netif_msg_rx_status(tp))
1963 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1964 " cur %4.4x.\n", dev->name, rx_status,
1966 #if RTL8139_DEBUG > 2
1969 DPRINTK ("%s: Frame contents ", dev->name);
1970 for (i = 0; i < 70; i++)
1972 rx_ring[ring_offset + i]);
1977 /* Packet copy from FIFO still in progress.
1978 * Theoretically, this should never happen
1979 * since EarlyRx is disabled.
1981 if (unlikely(rx_size == 0xfff0)) {
1982 if (!tp->fifo_copy_timeout)
1983 tp->fifo_copy_timeout = jiffies + 2;
1984 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1985 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1989 if (netif_msg_intr(tp)) {
1990 printk(KERN_DEBUG "%s: fifo copy in progress.",
1993 tp->xstats.early_rx++;
1998 tp->fifo_copy_timeout = 0;
2000 /* If Rx err or invalid rx_size/rx_status received
2001 * (which happens if we get lost in the ring),
2002 * Rx process gets reset, so we abort any further
2005 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2007 (!(rx_status & RxStatusOK)))) {
2008 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2013 /* Malloc up new buffer, compatible with net-2e. */
2014 /* Omit the four octet CRC from the length. */
2016 skb = dev_alloc_skb (pkt_size + 2);
2019 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
2021 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2023 eth_copy_and_sum (skb, &rx_ring[ring_offset + 4], pkt_size, 0);
2025 skb_put (skb, pkt_size);
2027 skb->protocol = eth_type_trans (skb, dev);
2029 dev->last_rx = jiffies;
2030 tp->stats.rx_bytes += pkt_size;
2031 tp->stats.rx_packets++;
2033 netif_receive_skb (skb);
2035 if (net_ratelimit())
2036 printk (KERN_WARNING
2037 "%s: Memory squeeze, dropping packet.\n",
2039 tp->stats.rx_dropped++;
2043 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2044 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2046 rtl8139_isr_ack(tp);
2049 if (unlikely(!received || rx_size == 0xfff0))
2050 rtl8139_isr_ack(tp);
2052 #if RTL8139_DEBUG > 1
2053 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2054 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2055 RTL_R16 (RxBufAddr),
2056 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2059 tp->cur_rx = cur_rx;
2062 * The receive buffer should be mostly empty.
2063 * Tell NAPI to reenable the Rx irq.
2065 if (tp->fifo_copy_timeout)
2073 static void rtl8139_weird_interrupt (struct net_device *dev,
2074 struct rtl8139_private *tp,
2075 void __iomem *ioaddr,
2076 int status, int link_changed)
2078 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2081 assert (dev != NULL);
2082 assert (tp != NULL);
2083 assert (ioaddr != NULL);
2085 /* Update the error count. */
2086 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2087 RTL_W32 (RxMissed, 0);
2089 if ((status & RxUnderrun) && link_changed &&
2090 (tp->drv_flags & HAS_LNK_CHNG)) {
2091 rtl_check_media(dev, 0);
2092 status &= ~RxUnderrun;
2095 if (status & (RxUnderrun | RxErr))
2096 tp->stats.rx_errors++;
2098 if (status & PCSTimeout)
2099 tp->stats.rx_length_errors++;
2100 if (status & RxUnderrun)
2101 tp->stats.rx_fifo_errors++;
2102 if (status & PCIErr) {
2104 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2105 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2107 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2108 dev->name, pci_cmd_status);
2112 static int rtl8139_poll(struct net_device *dev, int *budget)
2114 struct rtl8139_private *tp = netdev_priv(dev);
2115 void __iomem *ioaddr = tp->mmio_addr;
2116 int orig_budget = min(*budget, dev->quota);
2119 spin_lock(&tp->rx_lock);
2120 if (likely(RTL_R16(IntrStatus) & RxAckBits)) {
2123 work_done = rtl8139_rx(dev, tp, orig_budget);
2124 if (likely(work_done > 0)) {
2125 *budget -= work_done;
2126 dev->quota -= work_done;
2127 done = (work_done < orig_budget);
2133 * Order is important since data can get interrupted
2134 * again when we think we are done.
2136 local_irq_disable();
2137 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2138 __netif_rx_complete(dev);
2141 spin_unlock(&tp->rx_lock);
2146 /* The interrupt handler does all of the Rx thread work and cleans up
2147 after the Tx thread. */
2148 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
2149 struct pt_regs *regs)
2151 struct net_device *dev = (struct net_device *) dev_instance;
2152 struct rtl8139_private *tp = netdev_priv(dev);
2153 void __iomem *ioaddr = tp->mmio_addr;
2154 u16 status, ackstat;
2155 int link_changed = 0; /* avoid bogus "uninit" warning */
2158 spin_lock (&tp->lock);
2159 status = RTL_R16 (IntrStatus);
2162 if (unlikely((status & rtl8139_intr_mask) == 0))
2167 /* h/w no longer present (hotplug?) or major error, bail */
2168 if (unlikely(status == 0xFFFF))
2171 /* close possible race's with dev_close */
2172 if (unlikely(!netif_running(dev))) {
2173 RTL_W16 (IntrMask, 0);
2177 /* Acknowledge all of the current interrupt sources ASAP, but
2178 an first get an additional status bit from CSCR. */
2179 if (unlikely(status & RxUnderrun))
2180 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2182 ackstat = status & ~(RxAckBits | TxErr);
2184 RTL_W16 (IntrStatus, ackstat);
2186 /* Receive packets are processed by poll routine.
2187 If not running start it now. */
2188 if (status & RxAckBits){
2189 if (netif_rx_schedule_prep(dev)) {
2190 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2191 __netif_rx_schedule (dev);
2195 /* Check uncommon events with one test. */
2196 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2197 rtl8139_weird_interrupt (dev, tp, ioaddr,
2198 status, link_changed);
2200 if (status & (TxOK | TxErr)) {
2201 rtl8139_tx_interrupt (dev, tp, ioaddr);
2203 RTL_W16 (IntrStatus, TxErr);
2206 spin_unlock (&tp->lock);
2208 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2209 dev->name, RTL_R16 (IntrStatus));
2210 return IRQ_RETVAL(handled);
2213 #ifdef CONFIG_NET_POLL_CONTROLLER
2215 * Polling receive - used by netconsole and other diagnostic tools
2216 * to allow network i/o with interrupts disabled.
2218 static void rtl8139_poll_controller(struct net_device *dev)
2220 disable_irq(dev->irq);
2221 rtl8139_interrupt(dev->irq, dev, NULL);
2222 enable_irq(dev->irq);
2226 static int rtl8139_close (struct net_device *dev)
2228 struct rtl8139_private *tp = netdev_priv(dev);
2229 void __iomem *ioaddr = tp->mmio_addr;
2230 unsigned long flags;
2232 netif_stop_queue (dev);
2234 rtl8139_stop_thread(tp);
2236 if (netif_msg_ifdown(tp))
2237 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2238 dev->name, RTL_R16 (IntrStatus));
2240 spin_lock_irqsave (&tp->lock, flags);
2242 /* Stop the chip's Tx and Rx DMA processes. */
2243 RTL_W8 (ChipCmd, 0);
2245 /* Disable interrupts by clearing the interrupt mask. */
2246 RTL_W16 (IntrMask, 0);
2248 /* Update the error counts. */
2249 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2250 RTL_W32 (RxMissed, 0);
2252 spin_unlock_irqrestore (&tp->lock, flags);
2254 synchronize_irq (dev->irq); /* racy, but that's ok here */
2255 free_irq (dev->irq, dev);
2257 rtl8139_tx_clear (tp);
2259 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
2260 tp->rx_ring, tp->rx_ring_dma);
2261 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
2262 tp->tx_bufs, tp->tx_bufs_dma);
2266 /* Green! Put the chip in low-power mode. */
2267 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2269 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2270 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2276 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2277 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2278 other threads or interrupts aren't messing with the 8139. */
2279 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2281 struct rtl8139_private *np = netdev_priv(dev);
2282 void __iomem *ioaddr = np->mmio_addr;
2284 spin_lock_irq(&np->lock);
2285 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2286 u8 cfg3 = RTL_R8 (Config3);
2287 u8 cfg5 = RTL_R8 (Config5);
2289 wol->supported = WAKE_PHY | WAKE_MAGIC
2290 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2293 if (cfg3 & Cfg3_LinkUp)
2294 wol->wolopts |= WAKE_PHY;
2295 if (cfg3 & Cfg3_Magic)
2296 wol->wolopts |= WAKE_MAGIC;
2297 /* (KON)FIXME: See how netdev_set_wol() handles the
2298 following constants. */
2299 if (cfg5 & Cfg5_UWF)
2300 wol->wolopts |= WAKE_UCAST;
2301 if (cfg5 & Cfg5_MWF)
2302 wol->wolopts |= WAKE_MCAST;
2303 if (cfg5 & Cfg5_BWF)
2304 wol->wolopts |= WAKE_BCAST;
2306 spin_unlock_irq(&np->lock);
2310 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2311 that wol points to kernel memory and other threads or interrupts
2312 aren't messing with the 8139. */
2313 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2315 struct rtl8139_private *np = netdev_priv(dev);
2316 void __iomem *ioaddr = np->mmio_addr;
2320 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2321 ? (WAKE_PHY | WAKE_MAGIC
2322 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2324 if (wol->wolopts & ~support)
2327 spin_lock_irq(&np->lock);
2328 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2329 if (wol->wolopts & WAKE_PHY)
2330 cfg3 |= Cfg3_LinkUp;
2331 if (wol->wolopts & WAKE_MAGIC)
2333 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2334 RTL_W8 (Config3, cfg3);
2335 RTL_W8 (Cfg9346, Cfg9346_Lock);
2337 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2338 /* (KON)FIXME: These are untested. We may have to set the
2339 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2341 if (wol->wolopts & WAKE_UCAST)
2343 if (wol->wolopts & WAKE_MCAST)
2345 if (wol->wolopts & WAKE_BCAST)
2347 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2348 spin_unlock_irq(&np->lock);
2353 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2355 struct rtl8139_private *np = netdev_priv(dev);
2356 strcpy(info->driver, DRV_NAME);
2357 strcpy(info->version, DRV_VERSION);
2358 strcpy(info->bus_info, pci_name(np->pci_dev));
2359 info->regdump_len = np->regs_len;
2362 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2364 struct rtl8139_private *np = netdev_priv(dev);
2365 spin_lock_irq(&np->lock);
2366 mii_ethtool_gset(&np->mii, cmd);
2367 spin_unlock_irq(&np->lock);
2371 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2373 struct rtl8139_private *np = netdev_priv(dev);
2375 spin_lock_irq(&np->lock);
2376 rc = mii_ethtool_sset(&np->mii, cmd);
2377 spin_unlock_irq(&np->lock);
2381 static int rtl8139_nway_reset(struct net_device *dev)
2383 struct rtl8139_private *np = netdev_priv(dev);
2384 return mii_nway_restart(&np->mii);
2387 static u32 rtl8139_get_link(struct net_device *dev)
2389 struct rtl8139_private *np = netdev_priv(dev);
2390 return mii_link_ok(&np->mii);
2393 static u32 rtl8139_get_msglevel(struct net_device *dev)
2395 struct rtl8139_private *np = netdev_priv(dev);
2396 return np->msg_enable;
2399 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2401 struct rtl8139_private *np = netdev_priv(dev);
2402 np->msg_enable = datum;
2405 /* TODO: we are too slack to do reg dumping for pio, for now */
2406 #ifdef CONFIG_8139TOO_PIO
2407 #define rtl8139_get_regs_len NULL
2408 #define rtl8139_get_regs NULL
2410 static int rtl8139_get_regs_len(struct net_device *dev)
2412 struct rtl8139_private *np = netdev_priv(dev);
2413 return np->regs_len;
2416 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2418 struct rtl8139_private *np = netdev_priv(dev);
2420 regs->version = RTL_REGS_VER;
2422 spin_lock_irq(&np->lock);
2423 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2424 spin_unlock_irq(&np->lock);
2426 #endif /* CONFIG_8139TOO_MMIO */
2428 static int rtl8139_get_stats_count(struct net_device *dev)
2430 return RTL_NUM_STATS;
2433 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2435 struct rtl8139_private *np = netdev_priv(dev);
2437 data[0] = np->xstats.early_rx;
2438 data[1] = np->xstats.tx_buf_mapped;
2439 data[2] = np->xstats.tx_timeouts;
2440 data[3] = np->xstats.rx_lost_in_ring;
2443 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2445 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2448 static struct ethtool_ops rtl8139_ethtool_ops = {
2449 .get_drvinfo = rtl8139_get_drvinfo,
2450 .get_settings = rtl8139_get_settings,
2451 .set_settings = rtl8139_set_settings,
2452 .get_regs_len = rtl8139_get_regs_len,
2453 .get_regs = rtl8139_get_regs,
2454 .nway_reset = rtl8139_nway_reset,
2455 .get_link = rtl8139_get_link,
2456 .get_msglevel = rtl8139_get_msglevel,
2457 .set_msglevel = rtl8139_set_msglevel,
2458 .get_wol = rtl8139_get_wol,
2459 .set_wol = rtl8139_set_wol,
2460 .get_strings = rtl8139_get_strings,
2461 .get_stats_count = rtl8139_get_stats_count,
2462 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2463 .get_perm_addr = ethtool_op_get_perm_addr,
2466 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2468 struct rtl8139_private *np = netdev_priv(dev);
2471 if (!netif_running(dev))
2474 spin_lock_irq(&np->lock);
2475 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2476 spin_unlock_irq(&np->lock);
2482 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2484 struct rtl8139_private *tp = netdev_priv(dev);
2485 void __iomem *ioaddr = tp->mmio_addr;
2486 unsigned long flags;
2488 if (netif_running(dev)) {
2489 spin_lock_irqsave (&tp->lock, flags);
2490 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2491 RTL_W32 (RxMissed, 0);
2492 spin_unlock_irqrestore (&tp->lock, flags);
2498 /* Set or clear the multicast filter for this adaptor.
2499 This routine is not state sensitive and need not be SMP locked. */
2501 static void __set_rx_mode (struct net_device *dev)
2503 struct rtl8139_private *tp = netdev_priv(dev);
2504 void __iomem *ioaddr = tp->mmio_addr;
2505 u32 mc_filter[2]; /* Multicast hash filter */
2509 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2510 dev->name, dev->flags, RTL_R32 (RxConfig));
2512 /* Note: do not reorder, GCC is clever about common statements. */
2513 if (dev->flags & IFF_PROMISC) {
2514 /* Unconditionally log net taps. */
2515 printk (KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2518 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2520 mc_filter[1] = mc_filter[0] = 0xffffffff;
2521 } else if ((dev->mc_count > multicast_filter_limit)
2522 || (dev->flags & IFF_ALLMULTI)) {
2523 /* Too many to filter perfectly -- accept all multicasts. */
2524 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2525 mc_filter[1] = mc_filter[0] = 0xffffffff;
2527 struct dev_mc_list *mclist;
2528 rx_mode = AcceptBroadcast | AcceptMyPhys;
2529 mc_filter[1] = mc_filter[0] = 0;
2530 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2531 i++, mclist = mclist->next) {
2532 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2534 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2535 rx_mode |= AcceptMulticast;
2539 /* We can safely update without stopping the chip. */
2540 tmp = rtl8139_rx_config | rx_mode;
2541 if (tp->rx_config != tmp) {
2542 RTL_W32_F (RxConfig, tmp);
2543 tp->rx_config = tmp;
2545 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2546 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2549 static void rtl8139_set_rx_mode (struct net_device *dev)
2551 unsigned long flags;
2552 struct rtl8139_private *tp = netdev_priv(dev);
2554 spin_lock_irqsave (&tp->lock, flags);
2556 spin_unlock_irqrestore (&tp->lock, flags);
2561 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2563 struct net_device *dev = pci_get_drvdata (pdev);
2564 struct rtl8139_private *tp = netdev_priv(dev);
2565 void __iomem *ioaddr = tp->mmio_addr;
2566 unsigned long flags;
2568 pci_save_state (pdev);
2570 if (!netif_running (dev))
2573 netif_device_detach (dev);
2575 spin_lock_irqsave (&tp->lock, flags);
2577 /* Disable interrupts, stop Tx and Rx. */
2578 RTL_W16 (IntrMask, 0);
2579 RTL_W8 (ChipCmd, 0);
2581 /* Update the error counts. */
2582 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2583 RTL_W32 (RxMissed, 0);
2585 spin_unlock_irqrestore (&tp->lock, flags);
2587 pci_set_power_state (pdev, PCI_D3hot);
2593 static int rtl8139_resume (struct pci_dev *pdev)
2595 struct net_device *dev = pci_get_drvdata (pdev);
2597 pci_restore_state (pdev);
2598 if (!netif_running (dev))
2600 pci_set_power_state (pdev, PCI_D0);
2601 rtl8139_init_ring (dev);
2602 rtl8139_hw_start (dev);
2603 netif_device_attach (dev);
2607 #endif /* CONFIG_PM */
2610 static struct pci_driver rtl8139_pci_driver = {
2612 .id_table = rtl8139_pci_tbl,
2613 .probe = rtl8139_init_one,
2614 .remove = __devexit_p(rtl8139_remove_one),
2616 .suspend = rtl8139_suspend,
2617 .resume = rtl8139_resume,
2618 #endif /* CONFIG_PM */
2622 static int __init rtl8139_init_module (void)
2624 /* when we're a module, we always print a version message,
2625 * even if no 8139 board is found.
2628 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2631 return pci_module_init (&rtl8139_pci_driver);
2635 static void __exit rtl8139_cleanup_module (void)
2637 pci_unregister_driver (&rtl8139_pci_driver);
2641 module_init(rtl8139_init_module);
2642 module_exit(rtl8139_cleanup_module);