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 "0.9.28"
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 delayed_work 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 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 void rtl8139_thread (struct work_struct *work);
640 static void rtl8139_tx_timeout_task(struct work_struct *work);
641 static const struct ethtool_ops rtl8139_ethtool_ops;
643 /* write MMIO register, with flush */
644 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
645 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
646 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
647 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
650 #define MMIO_FLUSH_AUDIT_COMPLETE 1
651 #if MMIO_FLUSH_AUDIT_COMPLETE
653 /* write MMIO register */
654 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
655 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
656 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
660 /* write MMIO register, then flush */
661 #define RTL_W8 RTL_W8_F
662 #define RTL_W16 RTL_W16_F
663 #define RTL_W32 RTL_W32_F
665 #endif /* MMIO_FLUSH_AUDIT_COMPLETE */
667 /* read MMIO register */
668 #define RTL_R8(reg) ioread8 (ioaddr + (reg))
669 #define RTL_R16(reg) ioread16 (ioaddr + (reg))
670 #define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
673 static const u16 rtl8139_intr_mask =
674 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
675 TxErr | TxOK | RxErr | RxOK;
677 static const u16 rtl8139_norx_intr_mask =
678 PCIErr | PCSTimeout | RxUnderrun |
679 TxErr | TxOK | RxErr ;
682 static const unsigned int rtl8139_rx_config =
683 RxCfgRcv8K | RxNoWrap |
684 (RX_FIFO_THRESH << RxCfgFIFOShift) |
685 (RX_DMA_BURST << RxCfgDMAShift);
686 #elif RX_BUF_IDX == 1
687 static const unsigned int rtl8139_rx_config =
688 RxCfgRcv16K | RxNoWrap |
689 (RX_FIFO_THRESH << RxCfgFIFOShift) |
690 (RX_DMA_BURST << RxCfgDMAShift);
691 #elif RX_BUF_IDX == 2
692 static const unsigned int rtl8139_rx_config =
693 RxCfgRcv32K | RxNoWrap |
694 (RX_FIFO_THRESH << RxCfgFIFOShift) |
695 (RX_DMA_BURST << RxCfgDMAShift);
696 #elif RX_BUF_IDX == 3
697 static const unsigned int rtl8139_rx_config =
699 (RX_FIFO_THRESH << RxCfgFIFOShift) |
700 (RX_DMA_BURST << RxCfgDMAShift);
702 #error "Invalid configuration for 8139_RXBUF_IDX"
705 static const unsigned int rtl8139_tx_config =
706 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
708 static void __rtl8139_cleanup_dev (struct net_device *dev)
710 struct rtl8139_private *tp = netdev_priv(dev);
711 struct pci_dev *pdev;
713 assert (dev != NULL);
714 assert (tp->pci_dev != NULL);
719 ioport_unmap (tp->mmio_addr);
722 pci_iounmap (pdev, tp->mmio_addr);
723 #endif /* USE_IO_OPS */
725 /* it's ok to call this even if we have no regions to free */
726 pci_release_regions (pdev);
729 pci_set_drvdata (pdev, NULL);
733 static void rtl8139_chip_reset (void __iomem *ioaddr)
737 /* Soft reset the chip. */
738 RTL_W8 (ChipCmd, CmdReset);
740 /* Check that the chip has finished the reset. */
741 for (i = 1000; i > 0; i--) {
743 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
750 static int __devinit rtl8139_init_board (struct pci_dev *pdev,
751 struct net_device **dev_out)
753 void __iomem *ioaddr;
754 struct net_device *dev;
755 struct rtl8139_private *tp;
757 int rc, disable_dev_on_err = 0;
759 unsigned long pio_start, pio_end, pio_flags, pio_len;
760 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
763 assert (pdev != NULL);
767 /* dev and priv zeroed in alloc_etherdev */
768 dev = alloc_etherdev (sizeof (*tp));
770 dev_err(&pdev->dev, "Unable to alloc new net device\n");
773 SET_MODULE_OWNER(dev);
774 SET_NETDEV_DEV(dev, &pdev->dev);
776 tp = netdev_priv(dev);
779 /* enable device (incl. PCI PM wakeup and hotplug setup) */
780 rc = pci_enable_device (pdev);
784 pio_start = pci_resource_start (pdev, 0);
785 pio_end = pci_resource_end (pdev, 0);
786 pio_flags = pci_resource_flags (pdev, 0);
787 pio_len = pci_resource_len (pdev, 0);
789 mmio_start = pci_resource_start (pdev, 1);
790 mmio_end = pci_resource_end (pdev, 1);
791 mmio_flags = pci_resource_flags (pdev, 1);
792 mmio_len = pci_resource_len (pdev, 1);
794 /* set this immediately, we need to know before
795 * we talk to the chip directly */
796 DPRINTK("PIO region size == 0x%02X\n", pio_len);
797 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
800 /* make sure PCI base addr 0 is PIO */
801 if (!(pio_flags & IORESOURCE_IO)) {
802 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
806 /* check for weird/broken PCI region reporting */
807 if (pio_len < RTL_MIN_IO_SIZE) {
808 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
813 /* make sure PCI base addr 1 is MMIO */
814 if (!(mmio_flags & IORESOURCE_MEM)) {
815 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
819 if (mmio_len < RTL_MIN_IO_SIZE) {
820 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
826 rc = pci_request_regions (pdev, DRV_NAME);
829 disable_dev_on_err = 1;
831 /* enable PCI bus-mastering */
832 pci_set_master (pdev);
835 ioaddr = ioport_map(pio_start, pio_len);
837 dev_err(&pdev->dev, "cannot map PIO, aborting\n");
841 dev->base_addr = pio_start;
842 tp->mmio_addr = ioaddr;
843 tp->regs_len = pio_len;
845 /* ioremap MMIO region */
846 ioaddr = pci_iomap(pdev, 1, 0);
847 if (ioaddr == NULL) {
848 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
852 dev->base_addr = (long) ioaddr;
853 tp->mmio_addr = ioaddr;
854 tp->regs_len = mmio_len;
855 #endif /* USE_IO_OPS */
857 /* Bring old chips out of low-power mode. */
858 RTL_W8 (HltClk, 'R');
860 /* check for missing/broken hardware */
861 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
862 dev_err(&pdev->dev, "Chip not responding, ignoring board\n");
867 /* identify chip attached to board */
868 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
869 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
870 if (version == rtl_chip_info[i].version) {
875 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
876 dev_printk (KERN_DEBUG, &pdev->dev,
877 "unknown chip version, assuming RTL-8139\n");
878 dev_printk (KERN_DEBUG, &pdev->dev,
879 "TxConfig = 0x%lx\n", RTL_R32 (TxConfig));
883 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
884 version, i, rtl_chip_info[i].name);
886 if (tp->chipset >= CH_8139B) {
887 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
888 DPRINTK("PCI PM wakeup\n");
889 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
892 new_tmp8 |= Cfg1_PM_Enable;
893 if (new_tmp8 != tmp8) {
894 RTL_W8 (Cfg9346, Cfg9346_Unlock);
895 RTL_W8 (Config1, tmp8);
896 RTL_W8 (Cfg9346, Cfg9346_Lock);
898 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
899 tmp8 = RTL_R8 (Config4);
901 RTL_W8 (Cfg9346, Cfg9346_Unlock);
902 RTL_W8 (Config4, tmp8 & ~LWPTN);
903 RTL_W8 (Cfg9346, Cfg9346_Lock);
907 DPRINTK("Old chip wakeup\n");
908 tmp8 = RTL_R8 (Config1);
909 tmp8 &= ~(SLEEP | PWRDN);
910 RTL_W8 (Config1, tmp8);
913 rtl8139_chip_reset (ioaddr);
919 __rtl8139_cleanup_dev (dev);
920 if (disable_dev_on_err)
921 pci_disable_device (pdev);
926 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
927 const struct pci_device_id *ent)
929 struct net_device *dev = NULL;
930 struct rtl8139_private *tp;
931 int i, addr_len, option;
932 void __iomem *ioaddr;
933 static int board_idx = -1;
936 assert (pdev != NULL);
937 assert (ent != NULL);
941 /* when we're built into the kernel, the driver version message
942 * is only printed if at least one 8139 board has been found
946 static int printed_version;
947 if (!printed_version++)
948 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
952 pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
954 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
955 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev >= 0x20) {
957 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
958 pdev->vendor, pdev->device, pci_rev);
960 "Use the \"8139cp\" driver for improved performance and stability.\n");
963 i = rtl8139_init_board (pdev, &dev);
967 assert (dev != NULL);
968 tp = netdev_priv(dev);
970 ioaddr = tp->mmio_addr;
971 assert (ioaddr != NULL);
973 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
974 for (i = 0; i < 3; i++)
975 ((u16 *) (dev->dev_addr))[i] =
976 le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len));
977 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
979 /* The Rtl8139-specific entries in the device structure. */
980 dev->open = rtl8139_open;
981 dev->hard_start_xmit = rtl8139_start_xmit;
982 dev->poll = rtl8139_poll;
984 dev->stop = rtl8139_close;
985 dev->get_stats = rtl8139_get_stats;
986 dev->set_multicast_list = rtl8139_set_rx_mode;
987 dev->do_ioctl = netdev_ioctl;
988 dev->ethtool_ops = &rtl8139_ethtool_ops;
989 dev->tx_timeout = rtl8139_tx_timeout;
990 dev->watchdog_timeo = TX_TIMEOUT;
991 #ifdef CONFIG_NET_POLL_CONTROLLER
992 dev->poll_controller = rtl8139_poll_controller;
995 /* note: the hardware is not capable of sg/csum/highdma, however
996 * through the use of skb_copy_and_csum_dev we enable these
999 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
1001 dev->irq = pdev->irq;
1003 /* tp zeroed and aligned in alloc_etherdev */
1004 tp = netdev_priv(dev);
1006 /* note: tp->chipset set in rtl8139_init_board */
1007 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1008 tp->mmio_addr = ioaddr;
1010 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1011 spin_lock_init (&tp->lock);
1012 spin_lock_init (&tp->rx_lock);
1013 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1015 tp->mii.mdio_read = mdio_read;
1016 tp->mii.mdio_write = mdio_write;
1017 tp->mii.phy_id_mask = 0x3f;
1018 tp->mii.reg_num_mask = 0x1f;
1020 /* dev is fully set up and ready to use now */
1021 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1022 i = register_netdev (dev);
1023 if (i) goto err_out;
1025 pci_set_drvdata (pdev, dev);
1027 printk (KERN_INFO "%s: %s at 0x%lx, "
1028 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1031 board_info[ent->driver_data].name,
1033 dev->dev_addr[0], dev->dev_addr[1],
1034 dev->dev_addr[2], dev->dev_addr[3],
1035 dev->dev_addr[4], dev->dev_addr[5],
1038 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
1039 dev->name, rtl_chip_info[tp->chipset].name);
1041 /* Find the connected MII xcvrs.
1042 Doing this in open() would allow detecting external xcvrs later, but
1043 takes too much time. */
1044 #ifdef CONFIG_8139TOO_8129
1045 if (tp->drv_flags & HAS_MII_XCVR) {
1046 int phy, phy_idx = 0;
1047 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1048 int mii_status = mdio_read(dev, phy, 1);
1049 if (mii_status != 0xffff && mii_status != 0x0000) {
1050 u16 advertising = mdio_read(dev, phy, 4);
1051 tp->phys[phy_idx++] = phy;
1052 printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x "
1053 "advertising %4.4x.\n",
1054 dev->name, phy, mii_status, advertising);
1058 printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
1066 tp->mii.phy_id = tp->phys[0];
1068 /* The lower four bits are the media type. */
1069 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1071 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1072 tp->default_port = option & 0xFF;
1073 if (tp->default_port)
1074 tp->mii.force_media = 1;
1076 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1077 tp->mii.full_duplex = full_duplex[board_idx];
1078 if (tp->mii.full_duplex) {
1079 printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
1080 /* Changing the MII-advertised media because might prevent
1082 tp->mii.force_media = 1;
1084 if (tp->default_port) {
1085 printk(KERN_INFO " Forcing %dMbps %s-duplex operation.\n",
1086 (option & 0x20 ? 100 : 10),
1087 (option & 0x10 ? "full" : "half"));
1088 mdio_write(dev, tp->phys[0], 0,
1089 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1090 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1093 /* Put the chip into low-power mode. */
1094 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1095 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1100 __rtl8139_cleanup_dev (dev);
1101 pci_disable_device (pdev);
1106 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1108 struct net_device *dev = pci_get_drvdata (pdev);
1110 assert (dev != NULL);
1112 unregister_netdev (dev);
1114 __rtl8139_cleanup_dev (dev);
1115 pci_disable_device (pdev);
1119 /* Serial EEPROM section. */
1121 /* EEPROM_Ctrl bits. */
1122 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1123 #define EE_CS 0x08 /* EEPROM chip select. */
1124 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1125 #define EE_WRITE_0 0x00
1126 #define EE_WRITE_1 0x02
1127 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1128 #define EE_ENB (0x80 | EE_CS)
1130 /* Delay between EEPROM clock transitions.
1131 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1134 #define eeprom_delay() (void)RTL_R32(Cfg9346)
1136 /* The EEPROM commands include the alway-set leading bit. */
1137 #define EE_WRITE_CMD (5)
1138 #define EE_READ_CMD (6)
1139 #define EE_ERASE_CMD (7)
1141 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1144 unsigned retval = 0;
1145 int read_cmd = location | (EE_READ_CMD << addr_len);
1147 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1148 RTL_W8 (Cfg9346, EE_ENB);
1151 /* Shift the read command bits out. */
1152 for (i = 4 + addr_len; i >= 0; i--) {
1153 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1154 RTL_W8 (Cfg9346, EE_ENB | dataval);
1156 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1159 RTL_W8 (Cfg9346, EE_ENB);
1162 for (i = 16; i > 0; i--) {
1163 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1166 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1168 RTL_W8 (Cfg9346, EE_ENB);
1172 /* Terminate the EEPROM access. */
1173 RTL_W8 (Cfg9346, ~EE_CS);
1179 /* MII serial management: mostly bogus for now. */
1180 /* Read and write the MII management registers using software-generated
1181 serial MDIO protocol.
1182 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1183 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1184 "overclocking" issues. */
1185 #define MDIO_DIR 0x80
1186 #define MDIO_DATA_OUT 0x04
1187 #define MDIO_DATA_IN 0x02
1188 #define MDIO_CLK 0x01
1189 #define MDIO_WRITE0 (MDIO_DIR)
1190 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1192 #define mdio_delay() RTL_R8(Config4)
1195 static const char mii_2_8139_map[8] = {
1207 #ifdef CONFIG_8139TOO_8129
1208 /* Syncronize the MII management interface by shifting 32 one bits out. */
1209 static void mdio_sync (void __iomem *ioaddr)
1213 for (i = 32; i >= 0; i--) {
1214 RTL_W8 (Config4, MDIO_WRITE1);
1216 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1222 static int mdio_read (struct net_device *dev, int phy_id, int location)
1224 struct rtl8139_private *tp = netdev_priv(dev);
1226 #ifdef CONFIG_8139TOO_8129
1227 void __iomem *ioaddr = tp->mmio_addr;
1228 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1232 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1233 void __iomem *ioaddr = tp->mmio_addr;
1234 return location < 8 && mii_2_8139_map[location] ?
1235 RTL_R16 (mii_2_8139_map[location]) : 0;
1238 #ifdef CONFIG_8139TOO_8129
1240 /* Shift the read command bits out. */
1241 for (i = 15; i >= 0; i--) {
1242 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1244 RTL_W8 (Config4, MDIO_DIR | dataval);
1246 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1250 /* Read the two transition, 16 data, and wire-idle bits. */
1251 for (i = 19; i > 0; i--) {
1252 RTL_W8 (Config4, 0);
1254 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1255 RTL_W8 (Config4, MDIO_CLK);
1260 return (retval >> 1) & 0xffff;
1264 static void mdio_write (struct net_device *dev, int phy_id, int location,
1267 struct rtl8139_private *tp = netdev_priv(dev);
1268 #ifdef CONFIG_8139TOO_8129
1269 void __iomem *ioaddr = tp->mmio_addr;
1270 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1274 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1275 void __iomem *ioaddr = tp->mmio_addr;
1276 if (location == 0) {
1277 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1278 RTL_W16 (BasicModeCtrl, value);
1279 RTL_W8 (Cfg9346, Cfg9346_Lock);
1280 } else if (location < 8 && mii_2_8139_map[location])
1281 RTL_W16 (mii_2_8139_map[location], value);
1285 #ifdef CONFIG_8139TOO_8129
1288 /* Shift the command bits out. */
1289 for (i = 31; i >= 0; i--) {
1291 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1292 RTL_W8 (Config4, dataval);
1294 RTL_W8 (Config4, dataval | MDIO_CLK);
1297 /* Clear out extra bits. */
1298 for (i = 2; i > 0; i--) {
1299 RTL_W8 (Config4, 0);
1301 RTL_W8 (Config4, MDIO_CLK);
1308 static int rtl8139_open (struct net_device *dev)
1310 struct rtl8139_private *tp = netdev_priv(dev);
1312 void __iomem *ioaddr = tp->mmio_addr;
1314 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev);
1318 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1320 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1322 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1323 free_irq(dev->irq, dev);
1326 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1327 tp->tx_bufs, tp->tx_bufs_dma);
1329 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1330 tp->rx_ring, tp->rx_ring_dma);
1336 tp->mii.full_duplex = tp->mii.force_media;
1337 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1339 rtl8139_init_ring (dev);
1340 rtl8139_hw_start (dev);
1341 netif_start_queue (dev);
1343 if (netif_msg_ifup(tp))
1344 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#llx IRQ %d"
1345 " GP Pins %2.2x %s-duplex.\n", dev->name,
1346 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1347 dev->irq, RTL_R8 (MediaStatus),
1348 tp->mii.full_duplex ? "full" : "half");
1350 rtl8139_start_thread(tp);
1356 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1358 struct rtl8139_private *tp = netdev_priv(dev);
1360 if (tp->phys[0] >= 0) {
1361 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1365 /* Start the hardware at open or resume. */
1366 static void rtl8139_hw_start (struct net_device *dev)
1368 struct rtl8139_private *tp = netdev_priv(dev);
1369 void __iomem *ioaddr = tp->mmio_addr;
1373 /* Bring old chips out of low-power mode. */
1374 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1375 RTL_W8 (HltClk, 'R');
1377 rtl8139_chip_reset (ioaddr);
1379 /* unlock Config[01234] and BMCR register writes */
1380 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1381 /* Restore our idea of the MAC address. */
1382 RTL_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1383 RTL_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1385 /* Must enable Tx/Rx before setting transfer thresholds! */
1386 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1388 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1389 RTL_W32 (RxConfig, tp->rx_config);
1390 RTL_W32 (TxConfig, rtl8139_tx_config);
1394 rtl_check_media (dev, 1);
1396 if (tp->chipset >= CH_8139B) {
1397 /* Disable magic packet scanning, which is enabled
1398 * when PM is enabled in Config1. It can be reenabled
1399 * via ETHTOOL_SWOL if desired. */
1400 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1403 DPRINTK("init buffer addresses\n");
1405 /* Lock Config[01234] and BMCR register writes */
1406 RTL_W8 (Cfg9346, Cfg9346_Lock);
1408 /* init Rx ring buffer DMA address */
1409 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1411 /* init Tx buffer DMA addresses */
1412 for (i = 0; i < NUM_TX_DESC; i++)
1413 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1415 RTL_W32 (RxMissed, 0);
1417 rtl8139_set_rx_mode (dev);
1419 /* no early-rx interrupts */
1420 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1422 /* make sure RxTx has started */
1423 tmp = RTL_R8 (ChipCmd);
1424 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1425 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1427 /* Enable all known interrupts by setting the interrupt mask. */
1428 RTL_W16 (IntrMask, rtl8139_intr_mask);
1432 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1433 static void rtl8139_init_ring (struct net_device *dev)
1435 struct rtl8139_private *tp = netdev_priv(dev);
1442 for (i = 0; i < NUM_TX_DESC; i++)
1443 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1447 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1448 static int next_tick = 3 * HZ;
1450 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1451 static inline void rtl8139_tune_twister (struct net_device *dev,
1452 struct rtl8139_private *tp) {}
1454 enum TwisterParamVals {
1455 PARA78_default = 0x78fa8388,
1456 PARA7c_default = 0xcb38de43, /* param[0][3] */
1457 PARA7c_xxx = 0xcb38de43,
1460 static const unsigned long param[4][4] = {
1461 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1462 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1463 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1464 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1467 static void rtl8139_tune_twister (struct net_device *dev,
1468 struct rtl8139_private *tp)
1471 void __iomem *ioaddr = tp->mmio_addr;
1473 /* This is a complicated state machine to configure the "twister" for
1474 impedance/echos based on the cable length.
1475 All of this is magic and undocumented.
1477 switch (tp->twistie) {
1479 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1480 /* We have link beat, let us tune the twister. */
1481 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1482 tp->twistie = 2; /* Change to state 2. */
1483 next_tick = HZ / 10;
1485 /* Just put in some reasonable defaults for when beat returns. */
1486 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1487 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1488 RTL_W32 (PARA78, PARA78_default);
1489 RTL_W32 (PARA7c, PARA7c_default);
1490 tp->twistie = 0; /* Bail from future actions. */
1494 /* Read how long it took to hear the echo. */
1495 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1496 if (linkcase == 0x7000)
1498 else if (linkcase == 0x3000)
1500 else if (linkcase == 0x1000)
1505 tp->twistie = 3; /* Change to state 2. */
1506 next_tick = HZ / 10;
1509 /* Put out four tuning parameters, one per 100msec. */
1510 if (tp->twist_col == 0)
1511 RTL_W16 (FIFOTMS, 0);
1512 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1513 [(int) tp->twist_col]);
1514 next_tick = HZ / 10;
1515 if (++tp->twist_col >= 4) {
1516 /* For short cables we are done.
1517 For long cables (row == 3) check for mistune. */
1519 (tp->twist_row == 3) ? 4 : 0;
1523 /* Special case for long cables: check for mistune. */
1524 if ((RTL_R16 (CSCR) &
1525 CSCR_LinkStatusBits) == 0x7000) {
1529 RTL_W32 (PARA7c, 0xfb38de03);
1531 next_tick = HZ / 10;
1535 /* Retune for shorter cable (column 2). */
1536 RTL_W32 (FIFOTMS, 0x20);
1537 RTL_W32 (PARA78, PARA78_default);
1538 RTL_W32 (PARA7c, PARA7c_default);
1539 RTL_W32 (FIFOTMS, 0x00);
1543 next_tick = HZ / 10;
1551 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1553 static inline void rtl8139_thread_iter (struct net_device *dev,
1554 struct rtl8139_private *tp,
1555 void __iomem *ioaddr)
1559 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1561 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1562 int duplex = (mii_lpa & LPA_100FULL)
1563 || (mii_lpa & 0x01C0) == 0x0040;
1564 if (tp->mii.full_duplex != duplex) {
1565 tp->mii.full_duplex = duplex;
1569 "%s: Setting %s-duplex based on MII #%d link"
1570 " partner ability of %4.4x.\n",
1572 tp->mii.full_duplex ? "full" : "half",
1573 tp->phys[0], mii_lpa);
1575 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1579 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1580 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1581 RTL_W8 (Cfg9346, Cfg9346_Lock);
1586 next_tick = HZ * 60;
1588 rtl8139_tune_twister (dev, tp);
1590 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1591 dev->name, RTL_R16 (NWayLPAR));
1592 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1593 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1594 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1595 dev->name, RTL_R8 (Config0),
1599 static void rtl8139_thread (struct work_struct *work)
1601 struct rtl8139_private *tp =
1602 container_of(work, struct rtl8139_private, thread.work);
1603 struct net_device *dev = tp->mii.dev;
1604 unsigned long thr_delay = next_tick;
1606 if (tp->watchdog_fired) {
1607 tp->watchdog_fired = 0;
1608 rtl8139_tx_timeout_task(work);
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 (struct work_struct *work)
1652 struct rtl8139_private *tp =
1653 container_of(work, struct rtl8139_private, thread.work);
1654 struct net_device *dev = tp->mii.dev;
1655 void __iomem *ioaddr = tp->mmio_addr;
1659 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1660 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1661 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1662 /* Emit info to figure out what went wrong. */
1663 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1664 dev->name, tp->cur_tx, tp->dirty_tx);
1665 for (i = 0; i < NUM_TX_DESC; i++)
1666 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1667 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1668 i == tp->dirty_tx % NUM_TX_DESC ?
1669 " (queue head)" : "");
1671 tp->xstats.tx_timeouts++;
1673 /* disable Tx ASAP, if not already */
1674 tmp8 = RTL_R8 (ChipCmd);
1675 if (tmp8 & CmdTxEnb)
1676 RTL_W8 (ChipCmd, CmdRxEnb);
1678 spin_lock_bh(&tp->rx_lock);
1679 /* Disable interrupts by clearing the interrupt mask. */
1680 RTL_W16 (IntrMask, 0x0000);
1682 /* Stop a shared interrupt from scavenging while we are. */
1683 spin_lock_irq(&tp->lock);
1684 rtl8139_tx_clear (tp);
1685 spin_unlock_irq(&tp->lock);
1687 /* ...and finally, reset everything */
1688 if (netif_running(dev)) {
1689 rtl8139_hw_start (dev);
1690 netif_wake_queue (dev);
1692 spin_unlock_bh(&tp->rx_lock);
1695 static void rtl8139_tx_timeout (struct net_device *dev)
1697 struct rtl8139_private *tp = netdev_priv(dev);
1699 if (!tp->have_thread) {
1700 INIT_DELAYED_WORK(&tp->thread, rtl8139_tx_timeout_task);
1701 schedule_delayed_work(&tp->thread, next_tick);
1703 tp->watchdog_fired = 1;
1707 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1709 struct rtl8139_private *tp = netdev_priv(dev);
1710 void __iomem *ioaddr = tp->mmio_addr;
1712 unsigned int len = skb->len;
1713 unsigned long flags;
1715 /* Calculate the next Tx descriptor entry. */
1716 entry = tp->cur_tx % NUM_TX_DESC;
1718 /* Note: the chip doesn't have auto-pad! */
1719 if (likely(len < TX_BUF_SIZE)) {
1721 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1722 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1726 tp->stats.tx_dropped++;
1730 spin_lock_irqsave(&tp->lock, flags);
1731 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1732 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1734 dev->trans_start = jiffies;
1739 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1740 netif_stop_queue (dev);
1741 spin_unlock_irqrestore(&tp->lock, flags);
1743 if (netif_msg_tx_queued(tp))
1744 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1745 dev->name, len, entry);
1751 static void rtl8139_tx_interrupt (struct net_device *dev,
1752 struct rtl8139_private *tp,
1753 void __iomem *ioaddr)
1755 unsigned long dirty_tx, tx_left;
1757 assert (dev != NULL);
1758 assert (ioaddr != NULL);
1760 dirty_tx = tp->dirty_tx;
1761 tx_left = tp->cur_tx - dirty_tx;
1762 while (tx_left > 0) {
1763 int entry = dirty_tx % NUM_TX_DESC;
1766 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1768 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1769 break; /* It still hasn't been Txed */
1771 /* Note: TxCarrierLost is always asserted at 100mbps. */
1772 if (txstatus & (TxOutOfWindow | TxAborted)) {
1773 /* There was an major error, log it. */
1774 if (netif_msg_tx_err(tp))
1775 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1776 dev->name, txstatus);
1777 tp->stats.tx_errors++;
1778 if (txstatus & TxAborted) {
1779 tp->stats.tx_aborted_errors++;
1780 RTL_W32 (TxConfig, TxClearAbt);
1781 RTL_W16 (IntrStatus, TxErr);
1784 if (txstatus & TxCarrierLost)
1785 tp->stats.tx_carrier_errors++;
1786 if (txstatus & TxOutOfWindow)
1787 tp->stats.tx_window_errors++;
1789 if (txstatus & TxUnderrun) {
1790 /* Add 64 to the Tx FIFO threshold. */
1791 if (tp->tx_flag < 0x00300000)
1792 tp->tx_flag += 0x00020000;
1793 tp->stats.tx_fifo_errors++;
1795 tp->stats.collisions += (txstatus >> 24) & 15;
1796 tp->stats.tx_bytes += txstatus & 0x7ff;
1797 tp->stats.tx_packets++;
1804 #ifndef RTL8139_NDEBUG
1805 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1806 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1807 dev->name, dirty_tx, tp->cur_tx);
1808 dirty_tx += NUM_TX_DESC;
1810 #endif /* RTL8139_NDEBUG */
1812 /* only wake the queue if we did work, and the queue is stopped */
1813 if (tp->dirty_tx != dirty_tx) {
1814 tp->dirty_tx = dirty_tx;
1816 netif_wake_queue (dev);
1821 /* TODO: clean this up! Rx reset need not be this intensive */
1822 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1823 struct rtl8139_private *tp, void __iomem *ioaddr)
1826 #ifdef CONFIG_8139_OLD_RX_RESET
1830 if (netif_msg_rx_err (tp))
1831 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1832 dev->name, rx_status);
1833 tp->stats.rx_errors++;
1834 if (!(rx_status & RxStatusOK)) {
1835 if (rx_status & RxTooLong) {
1836 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1837 dev->name, rx_status);
1838 /* A.C.: The chip hangs here. */
1840 if (rx_status & (RxBadSymbol | RxBadAlign))
1841 tp->stats.rx_frame_errors++;
1842 if (rx_status & (RxRunt | RxTooLong))
1843 tp->stats.rx_length_errors++;
1844 if (rx_status & RxCRCErr)
1845 tp->stats.rx_crc_errors++;
1847 tp->xstats.rx_lost_in_ring++;
1850 #ifndef CONFIG_8139_OLD_RX_RESET
1851 tmp8 = RTL_R8 (ChipCmd);
1852 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1853 RTL_W8 (ChipCmd, tmp8);
1854 RTL_W32 (RxConfig, tp->rx_config);
1857 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1859 /* disable receive */
1860 RTL_W8_F (ChipCmd, CmdTxEnb);
1862 while (--tmp_work > 0) {
1864 tmp8 = RTL_R8 (ChipCmd);
1865 if (!(tmp8 & CmdRxEnb))
1869 printk (KERN_WARNING PFX "rx stop wait too long\n");
1870 /* restart receive */
1872 while (--tmp_work > 0) {
1873 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1875 tmp8 = RTL_R8 (ChipCmd);
1876 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1880 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1882 /* and reinitialize all rx related registers */
1883 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1884 /* Must enable Tx/Rx before setting transfer thresholds! */
1885 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1887 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1888 RTL_W32 (RxConfig, tp->rx_config);
1891 DPRINTK("init buffer addresses\n");
1893 /* Lock Config[01234] and BMCR register writes */
1894 RTL_W8 (Cfg9346, Cfg9346_Lock);
1896 /* init Rx ring buffer DMA address */
1897 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1899 /* A.C.: Reset the multicast list. */
1900 __set_rx_mode (dev);
1905 static __inline__ void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1906 u32 offset, unsigned int size)
1908 u32 left = RX_BUF_LEN - offset;
1911 memcpy(skb->data, ring + offset, left);
1912 memcpy(skb->data+left, ring, size - left);
1914 memcpy(skb->data, ring + offset, size);
1918 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1920 void __iomem *ioaddr = tp->mmio_addr;
1923 status = RTL_R16 (IntrStatus) & RxAckBits;
1925 /* Clear out errors and receive interrupts */
1926 if (likely(status != 0)) {
1927 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1928 tp->stats.rx_errors++;
1929 if (status & RxFIFOOver)
1930 tp->stats.rx_fifo_errors++;
1932 RTL_W16_F (IntrStatus, RxAckBits);
1936 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1939 void __iomem *ioaddr = tp->mmio_addr;
1941 unsigned char *rx_ring = tp->rx_ring;
1942 unsigned int cur_rx = tp->cur_rx;
1943 unsigned int rx_size = 0;
1945 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1946 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1947 RTL_R16 (RxBufAddr),
1948 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1950 while (netif_running(dev) && received < budget
1951 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1952 u32 ring_offset = cur_rx % RX_BUF_LEN;
1954 unsigned int pkt_size;
1955 struct sk_buff *skb;
1959 /* read size+status of next frame from DMA ring buffer */
1960 rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset));
1961 rx_size = rx_status >> 16;
1962 pkt_size = rx_size - 4;
1964 if (netif_msg_rx_status(tp))
1965 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1966 " cur %4.4x.\n", dev->name, rx_status,
1968 #if RTL8139_DEBUG > 2
1971 DPRINTK ("%s: Frame contents ", dev->name);
1972 for (i = 0; i < 70; i++)
1974 rx_ring[ring_offset + i]);
1979 /* Packet copy from FIFO still in progress.
1980 * Theoretically, this should never happen
1981 * since EarlyRx is disabled.
1983 if (unlikely(rx_size == 0xfff0)) {
1984 if (!tp->fifo_copy_timeout)
1985 tp->fifo_copy_timeout = jiffies + 2;
1986 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1987 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1991 if (netif_msg_intr(tp)) {
1992 printk(KERN_DEBUG "%s: fifo copy in progress.",
1995 tp->xstats.early_rx++;
2000 tp->fifo_copy_timeout = 0;
2002 /* If Rx err or invalid rx_size/rx_status received
2003 * (which happens if we get lost in the ring),
2004 * Rx process gets reset, so we abort any further
2007 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2009 (!(rx_status & RxStatusOK)))) {
2010 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2015 /* Malloc up new buffer, compatible with net-2e. */
2016 /* Omit the four octet CRC from the length. */
2018 skb = dev_alloc_skb (pkt_size + 2);
2021 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
2023 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2025 eth_copy_and_sum (skb, &rx_ring[ring_offset + 4], pkt_size, 0);
2027 skb_put (skb, pkt_size);
2029 skb->protocol = eth_type_trans (skb, dev);
2031 dev->last_rx = jiffies;
2032 tp->stats.rx_bytes += pkt_size;
2033 tp->stats.rx_packets++;
2035 netif_receive_skb (skb);
2037 if (net_ratelimit())
2038 printk (KERN_WARNING
2039 "%s: Memory squeeze, dropping packet.\n",
2041 tp->stats.rx_dropped++;
2045 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2046 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2048 rtl8139_isr_ack(tp);
2051 if (unlikely(!received || rx_size == 0xfff0))
2052 rtl8139_isr_ack(tp);
2054 #if RTL8139_DEBUG > 1
2055 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2056 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2057 RTL_R16 (RxBufAddr),
2058 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2061 tp->cur_rx = cur_rx;
2064 * The receive buffer should be mostly empty.
2065 * Tell NAPI to reenable the Rx irq.
2067 if (tp->fifo_copy_timeout)
2075 static void rtl8139_weird_interrupt (struct net_device *dev,
2076 struct rtl8139_private *tp,
2077 void __iomem *ioaddr,
2078 int status, int link_changed)
2080 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2083 assert (dev != NULL);
2084 assert (tp != NULL);
2085 assert (ioaddr != NULL);
2087 /* Update the error count. */
2088 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2089 RTL_W32 (RxMissed, 0);
2091 if ((status & RxUnderrun) && link_changed &&
2092 (tp->drv_flags & HAS_LNK_CHNG)) {
2093 rtl_check_media(dev, 0);
2094 status &= ~RxUnderrun;
2097 if (status & (RxUnderrun | RxErr))
2098 tp->stats.rx_errors++;
2100 if (status & PCSTimeout)
2101 tp->stats.rx_length_errors++;
2102 if (status & RxUnderrun)
2103 tp->stats.rx_fifo_errors++;
2104 if (status & PCIErr) {
2106 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2107 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2109 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2110 dev->name, pci_cmd_status);
2114 static int rtl8139_poll(struct net_device *dev, int *budget)
2116 struct rtl8139_private *tp = netdev_priv(dev);
2117 void __iomem *ioaddr = tp->mmio_addr;
2118 int orig_budget = min(*budget, dev->quota);
2121 spin_lock(&tp->rx_lock);
2122 if (likely(RTL_R16(IntrStatus) & RxAckBits)) {
2125 work_done = rtl8139_rx(dev, tp, orig_budget);
2126 if (likely(work_done > 0)) {
2127 *budget -= work_done;
2128 dev->quota -= work_done;
2129 done = (work_done < orig_budget);
2135 * Order is important since data can get interrupted
2136 * again when we think we are done.
2138 local_irq_disable();
2139 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2140 __netif_rx_complete(dev);
2143 spin_unlock(&tp->rx_lock);
2148 /* The interrupt handler does all of the Rx thread work and cleans up
2149 after the Tx thread. */
2150 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance)
2152 struct net_device *dev = (struct net_device *) dev_instance;
2153 struct rtl8139_private *tp = netdev_priv(dev);
2154 void __iomem *ioaddr = tp->mmio_addr;
2155 u16 status, ackstat;
2156 int link_changed = 0; /* avoid bogus "uninit" warning */
2159 spin_lock (&tp->lock);
2160 status = RTL_R16 (IntrStatus);
2163 if (unlikely((status & rtl8139_intr_mask) == 0))
2168 /* h/w no longer present (hotplug?) or major error, bail */
2169 if (unlikely(status == 0xFFFF))
2172 /* close possible race's with dev_close */
2173 if (unlikely(!netif_running(dev))) {
2174 RTL_W16 (IntrMask, 0);
2178 /* Acknowledge all of the current interrupt sources ASAP, but
2179 an first get an additional status bit from CSCR. */
2180 if (unlikely(status & RxUnderrun))
2181 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2183 ackstat = status & ~(RxAckBits | TxErr);
2185 RTL_W16 (IntrStatus, ackstat);
2187 /* Receive packets are processed by poll routine.
2188 If not running start it now. */
2189 if (status & RxAckBits){
2190 if (netif_rx_schedule_prep(dev)) {
2191 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2192 __netif_rx_schedule (dev);
2196 /* Check uncommon events with one test. */
2197 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2198 rtl8139_weird_interrupt (dev, tp, ioaddr,
2199 status, link_changed);
2201 if (status & (TxOK | TxErr)) {
2202 rtl8139_tx_interrupt (dev, tp, ioaddr);
2204 RTL_W16 (IntrStatus, TxErr);
2207 spin_unlock (&tp->lock);
2209 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2210 dev->name, RTL_R16 (IntrStatus));
2211 return IRQ_RETVAL(handled);
2214 #ifdef CONFIG_NET_POLL_CONTROLLER
2216 * Polling receive - used by netconsole and other diagnostic tools
2217 * to allow network i/o with interrupts disabled.
2219 static void rtl8139_poll_controller(struct net_device *dev)
2221 disable_irq(dev->irq);
2222 rtl8139_interrupt(dev->irq, dev);
2223 enable_irq(dev->irq);
2227 static int rtl8139_close (struct net_device *dev)
2229 struct rtl8139_private *tp = netdev_priv(dev);
2230 void __iomem *ioaddr = tp->mmio_addr;
2231 unsigned long flags;
2233 netif_stop_queue (dev);
2235 rtl8139_stop_thread(tp);
2237 if (netif_msg_ifdown(tp))
2238 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2239 dev->name, RTL_R16 (IntrStatus));
2241 spin_lock_irqsave (&tp->lock, flags);
2243 /* Stop the chip's Tx and Rx DMA processes. */
2244 RTL_W8 (ChipCmd, 0);
2246 /* Disable interrupts by clearing the interrupt mask. */
2247 RTL_W16 (IntrMask, 0);
2249 /* Update the error counts. */
2250 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2251 RTL_W32 (RxMissed, 0);
2253 spin_unlock_irqrestore (&tp->lock, flags);
2255 synchronize_irq (dev->irq); /* racy, but that's ok here */
2256 free_irq (dev->irq, dev);
2258 rtl8139_tx_clear (tp);
2260 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
2261 tp->rx_ring, tp->rx_ring_dma);
2262 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
2263 tp->tx_bufs, tp->tx_bufs_dma);
2267 /* Green! Put the chip in low-power mode. */
2268 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2270 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2271 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2277 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2278 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2279 other threads or interrupts aren't messing with the 8139. */
2280 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2282 struct rtl8139_private *np = netdev_priv(dev);
2283 void __iomem *ioaddr = np->mmio_addr;
2285 spin_lock_irq(&np->lock);
2286 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2287 u8 cfg3 = RTL_R8 (Config3);
2288 u8 cfg5 = RTL_R8 (Config5);
2290 wol->supported = WAKE_PHY | WAKE_MAGIC
2291 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2294 if (cfg3 & Cfg3_LinkUp)
2295 wol->wolopts |= WAKE_PHY;
2296 if (cfg3 & Cfg3_Magic)
2297 wol->wolopts |= WAKE_MAGIC;
2298 /* (KON)FIXME: See how netdev_set_wol() handles the
2299 following constants. */
2300 if (cfg5 & Cfg5_UWF)
2301 wol->wolopts |= WAKE_UCAST;
2302 if (cfg5 & Cfg5_MWF)
2303 wol->wolopts |= WAKE_MCAST;
2304 if (cfg5 & Cfg5_BWF)
2305 wol->wolopts |= WAKE_BCAST;
2307 spin_unlock_irq(&np->lock);
2311 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2312 that wol points to kernel memory and other threads or interrupts
2313 aren't messing with the 8139. */
2314 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2316 struct rtl8139_private *np = netdev_priv(dev);
2317 void __iomem *ioaddr = np->mmio_addr;
2321 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2322 ? (WAKE_PHY | WAKE_MAGIC
2323 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2325 if (wol->wolopts & ~support)
2328 spin_lock_irq(&np->lock);
2329 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2330 if (wol->wolopts & WAKE_PHY)
2331 cfg3 |= Cfg3_LinkUp;
2332 if (wol->wolopts & WAKE_MAGIC)
2334 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2335 RTL_W8 (Config3, cfg3);
2336 RTL_W8 (Cfg9346, Cfg9346_Lock);
2338 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2339 /* (KON)FIXME: These are untested. We may have to set the
2340 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2342 if (wol->wolopts & WAKE_UCAST)
2344 if (wol->wolopts & WAKE_MCAST)
2346 if (wol->wolopts & WAKE_BCAST)
2348 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2349 spin_unlock_irq(&np->lock);
2354 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2356 struct rtl8139_private *np = netdev_priv(dev);
2357 strcpy(info->driver, DRV_NAME);
2358 strcpy(info->version, DRV_VERSION);
2359 strcpy(info->bus_info, pci_name(np->pci_dev));
2360 info->regdump_len = np->regs_len;
2363 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2365 struct rtl8139_private *np = netdev_priv(dev);
2366 spin_lock_irq(&np->lock);
2367 mii_ethtool_gset(&np->mii, cmd);
2368 spin_unlock_irq(&np->lock);
2372 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2374 struct rtl8139_private *np = netdev_priv(dev);
2376 spin_lock_irq(&np->lock);
2377 rc = mii_ethtool_sset(&np->mii, cmd);
2378 spin_unlock_irq(&np->lock);
2382 static int rtl8139_nway_reset(struct net_device *dev)
2384 struct rtl8139_private *np = netdev_priv(dev);
2385 return mii_nway_restart(&np->mii);
2388 static u32 rtl8139_get_link(struct net_device *dev)
2390 struct rtl8139_private *np = netdev_priv(dev);
2391 return mii_link_ok(&np->mii);
2394 static u32 rtl8139_get_msglevel(struct net_device *dev)
2396 struct rtl8139_private *np = netdev_priv(dev);
2397 return np->msg_enable;
2400 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2402 struct rtl8139_private *np = netdev_priv(dev);
2403 np->msg_enable = datum;
2406 /* TODO: we are too slack to do reg dumping for pio, for now */
2407 #ifdef CONFIG_8139TOO_PIO
2408 #define rtl8139_get_regs_len NULL
2409 #define rtl8139_get_regs NULL
2411 static int rtl8139_get_regs_len(struct net_device *dev)
2413 struct rtl8139_private *np = netdev_priv(dev);
2414 return np->regs_len;
2417 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2419 struct rtl8139_private *np = netdev_priv(dev);
2421 regs->version = RTL_REGS_VER;
2423 spin_lock_irq(&np->lock);
2424 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2425 spin_unlock_irq(&np->lock);
2427 #endif /* CONFIG_8139TOO_MMIO */
2429 static int rtl8139_get_stats_count(struct net_device *dev)
2431 return RTL_NUM_STATS;
2434 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2436 struct rtl8139_private *np = netdev_priv(dev);
2438 data[0] = np->xstats.early_rx;
2439 data[1] = np->xstats.tx_buf_mapped;
2440 data[2] = np->xstats.tx_timeouts;
2441 data[3] = np->xstats.rx_lost_in_ring;
2444 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2446 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2449 static const struct ethtool_ops rtl8139_ethtool_ops = {
2450 .get_drvinfo = rtl8139_get_drvinfo,
2451 .get_settings = rtl8139_get_settings,
2452 .set_settings = rtl8139_set_settings,
2453 .get_regs_len = rtl8139_get_regs_len,
2454 .get_regs = rtl8139_get_regs,
2455 .nway_reset = rtl8139_nway_reset,
2456 .get_link = rtl8139_get_link,
2457 .get_msglevel = rtl8139_get_msglevel,
2458 .set_msglevel = rtl8139_set_msglevel,
2459 .get_wol = rtl8139_get_wol,
2460 .set_wol = rtl8139_set_wol,
2461 .get_strings = rtl8139_get_strings,
2462 .get_stats_count = rtl8139_get_stats_count,
2463 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2464 .get_perm_addr = ethtool_op_get_perm_addr,
2467 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2469 struct rtl8139_private *np = netdev_priv(dev);
2472 if (!netif_running(dev))
2475 spin_lock_irq(&np->lock);
2476 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2477 spin_unlock_irq(&np->lock);
2483 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2485 struct rtl8139_private *tp = netdev_priv(dev);
2486 void __iomem *ioaddr = tp->mmio_addr;
2487 unsigned long flags;
2489 if (netif_running(dev)) {
2490 spin_lock_irqsave (&tp->lock, flags);
2491 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2492 RTL_W32 (RxMissed, 0);
2493 spin_unlock_irqrestore (&tp->lock, flags);
2499 /* Set or clear the multicast filter for this adaptor.
2500 This routine is not state sensitive and need not be SMP locked. */
2502 static void __set_rx_mode (struct net_device *dev)
2504 struct rtl8139_private *tp = netdev_priv(dev);
2505 void __iomem *ioaddr = tp->mmio_addr;
2506 u32 mc_filter[2]; /* Multicast hash filter */
2510 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2511 dev->name, dev->flags, RTL_R32 (RxConfig));
2513 /* Note: do not reorder, GCC is clever about common statements. */
2514 if (dev->flags & IFF_PROMISC) {
2516 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2518 mc_filter[1] = mc_filter[0] = 0xffffffff;
2519 } else if ((dev->mc_count > multicast_filter_limit)
2520 || (dev->flags & IFF_ALLMULTI)) {
2521 /* Too many to filter perfectly -- accept all multicasts. */
2522 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2523 mc_filter[1] = mc_filter[0] = 0xffffffff;
2525 struct dev_mc_list *mclist;
2526 rx_mode = AcceptBroadcast | AcceptMyPhys;
2527 mc_filter[1] = mc_filter[0] = 0;
2528 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2529 i++, mclist = mclist->next) {
2530 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2532 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2533 rx_mode |= AcceptMulticast;
2537 /* We can safely update without stopping the chip. */
2538 tmp = rtl8139_rx_config | rx_mode;
2539 if (tp->rx_config != tmp) {
2540 RTL_W32_F (RxConfig, tmp);
2541 tp->rx_config = tmp;
2543 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2544 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2547 static void rtl8139_set_rx_mode (struct net_device *dev)
2549 unsigned long flags;
2550 struct rtl8139_private *tp = netdev_priv(dev);
2552 spin_lock_irqsave (&tp->lock, flags);
2554 spin_unlock_irqrestore (&tp->lock, flags);
2559 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2561 struct net_device *dev = pci_get_drvdata (pdev);
2562 struct rtl8139_private *tp = netdev_priv(dev);
2563 void __iomem *ioaddr = tp->mmio_addr;
2564 unsigned long flags;
2566 pci_save_state (pdev);
2568 if (!netif_running (dev))
2571 netif_device_detach (dev);
2573 spin_lock_irqsave (&tp->lock, flags);
2575 /* Disable interrupts, stop Tx and Rx. */
2576 RTL_W16 (IntrMask, 0);
2577 RTL_W8 (ChipCmd, 0);
2579 /* Update the error counts. */
2580 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2581 RTL_W32 (RxMissed, 0);
2583 spin_unlock_irqrestore (&tp->lock, flags);
2585 pci_set_power_state (pdev, PCI_D3hot);
2591 static int rtl8139_resume (struct pci_dev *pdev)
2593 struct net_device *dev = pci_get_drvdata (pdev);
2595 pci_restore_state (pdev);
2596 if (!netif_running (dev))
2598 pci_set_power_state (pdev, PCI_D0);
2599 rtl8139_init_ring (dev);
2600 rtl8139_hw_start (dev);
2601 netif_device_attach (dev);
2605 #endif /* CONFIG_PM */
2608 static struct pci_driver rtl8139_pci_driver = {
2610 .id_table = rtl8139_pci_tbl,
2611 .probe = rtl8139_init_one,
2612 .remove = __devexit_p(rtl8139_remove_one),
2614 .suspend = rtl8139_suspend,
2615 .resume = rtl8139_resume,
2616 #endif /* CONFIG_PM */
2620 static int __init rtl8139_init_module (void)
2622 /* when we're a module, we always print a version message,
2623 * even if no 8139 board is found.
2626 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2629 return pci_register_driver(&rtl8139_pci_driver);
2633 static void __exit rtl8139_cleanup_module (void)
2635 pci_unregister_driver (&rtl8139_pci_driver);
2639 module_init(rtl8139_init_module);
2640 module_exit(rtl8139_cleanup_module);