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;
935 assert (pdev != NULL);
936 assert (ent != NULL);
940 /* when we're built into the kernel, the driver version message
941 * is only printed if at least one 8139 board has been found
945 static int printed_version;
946 if (!printed_version++)
947 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
951 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
952 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
954 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
955 pdev->vendor, pdev->device, pdev->revision);
957 "Use the \"8139cp\" driver for improved performance and stability.\n");
960 i = rtl8139_init_board (pdev, &dev);
964 assert (dev != NULL);
965 tp = netdev_priv(dev);
967 ioaddr = tp->mmio_addr;
968 assert (ioaddr != NULL);
970 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
971 for (i = 0; i < 3; i++)
972 ((u16 *) (dev->dev_addr))[i] =
973 le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len));
974 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
976 /* The Rtl8139-specific entries in the device structure. */
977 dev->open = rtl8139_open;
978 dev->hard_start_xmit = rtl8139_start_xmit;
979 dev->poll = rtl8139_poll;
981 dev->stop = rtl8139_close;
982 dev->get_stats = rtl8139_get_stats;
983 dev->set_multicast_list = rtl8139_set_rx_mode;
984 dev->do_ioctl = netdev_ioctl;
985 dev->ethtool_ops = &rtl8139_ethtool_ops;
986 dev->tx_timeout = rtl8139_tx_timeout;
987 dev->watchdog_timeo = TX_TIMEOUT;
988 #ifdef CONFIG_NET_POLL_CONTROLLER
989 dev->poll_controller = rtl8139_poll_controller;
992 /* note: the hardware is not capable of sg/csum/highdma, however
993 * through the use of skb_copy_and_csum_dev we enable these
996 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
998 dev->irq = pdev->irq;
1000 /* tp zeroed and aligned in alloc_etherdev */
1001 tp = netdev_priv(dev);
1003 /* note: tp->chipset set in rtl8139_init_board */
1004 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1005 tp->mmio_addr = ioaddr;
1007 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1008 spin_lock_init (&tp->lock);
1009 spin_lock_init (&tp->rx_lock);
1010 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1012 tp->mii.mdio_read = mdio_read;
1013 tp->mii.mdio_write = mdio_write;
1014 tp->mii.phy_id_mask = 0x3f;
1015 tp->mii.reg_num_mask = 0x1f;
1017 /* dev is fully set up and ready to use now */
1018 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1019 i = register_netdev (dev);
1020 if (i) goto err_out;
1022 pci_set_drvdata (pdev, dev);
1024 printk (KERN_INFO "%s: %s at 0x%lx, "
1025 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1028 board_info[ent->driver_data].name,
1030 dev->dev_addr[0], dev->dev_addr[1],
1031 dev->dev_addr[2], dev->dev_addr[3],
1032 dev->dev_addr[4], dev->dev_addr[5],
1035 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
1036 dev->name, rtl_chip_info[tp->chipset].name);
1038 /* Find the connected MII xcvrs.
1039 Doing this in open() would allow detecting external xcvrs later, but
1040 takes too much time. */
1041 #ifdef CONFIG_8139TOO_8129
1042 if (tp->drv_flags & HAS_MII_XCVR) {
1043 int phy, phy_idx = 0;
1044 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1045 int mii_status = mdio_read(dev, phy, 1);
1046 if (mii_status != 0xffff && mii_status != 0x0000) {
1047 u16 advertising = mdio_read(dev, phy, 4);
1048 tp->phys[phy_idx++] = phy;
1049 printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x "
1050 "advertising %4.4x.\n",
1051 dev->name, phy, mii_status, advertising);
1055 printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
1063 tp->mii.phy_id = tp->phys[0];
1065 /* The lower four bits are the media type. */
1066 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1068 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1069 tp->default_port = option & 0xFF;
1070 if (tp->default_port)
1071 tp->mii.force_media = 1;
1073 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1074 tp->mii.full_duplex = full_duplex[board_idx];
1075 if (tp->mii.full_duplex) {
1076 printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
1077 /* Changing the MII-advertised media because might prevent
1079 tp->mii.force_media = 1;
1081 if (tp->default_port) {
1082 printk(KERN_INFO " Forcing %dMbps %s-duplex operation.\n",
1083 (option & 0x20 ? 100 : 10),
1084 (option & 0x10 ? "full" : "half"));
1085 mdio_write(dev, tp->phys[0], 0,
1086 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1087 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1090 /* Put the chip into low-power mode. */
1091 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1092 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1097 __rtl8139_cleanup_dev (dev);
1098 pci_disable_device (pdev);
1103 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1105 struct net_device *dev = pci_get_drvdata (pdev);
1107 assert (dev != NULL);
1109 flush_scheduled_work();
1111 unregister_netdev (dev);
1113 __rtl8139_cleanup_dev (dev);
1114 pci_disable_device (pdev);
1118 /* Serial EEPROM section. */
1120 /* EEPROM_Ctrl bits. */
1121 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1122 #define EE_CS 0x08 /* EEPROM chip select. */
1123 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1124 #define EE_WRITE_0 0x00
1125 #define EE_WRITE_1 0x02
1126 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1127 #define EE_ENB (0x80 | EE_CS)
1129 /* Delay between EEPROM clock transitions.
1130 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1133 #define eeprom_delay() (void)RTL_R32(Cfg9346)
1135 /* The EEPROM commands include the alway-set leading bit. */
1136 #define EE_WRITE_CMD (5)
1137 #define EE_READ_CMD (6)
1138 #define EE_ERASE_CMD (7)
1140 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1143 unsigned retval = 0;
1144 int read_cmd = location | (EE_READ_CMD << addr_len);
1146 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1147 RTL_W8 (Cfg9346, EE_ENB);
1150 /* Shift the read command bits out. */
1151 for (i = 4 + addr_len; i >= 0; i--) {
1152 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1153 RTL_W8 (Cfg9346, EE_ENB | dataval);
1155 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1158 RTL_W8 (Cfg9346, EE_ENB);
1161 for (i = 16; i > 0; i--) {
1162 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1165 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1167 RTL_W8 (Cfg9346, EE_ENB);
1171 /* Terminate the EEPROM access. */
1172 RTL_W8 (Cfg9346, ~EE_CS);
1178 /* MII serial management: mostly bogus for now. */
1179 /* Read and write the MII management registers using software-generated
1180 serial MDIO protocol.
1181 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1182 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1183 "overclocking" issues. */
1184 #define MDIO_DIR 0x80
1185 #define MDIO_DATA_OUT 0x04
1186 #define MDIO_DATA_IN 0x02
1187 #define MDIO_CLK 0x01
1188 #define MDIO_WRITE0 (MDIO_DIR)
1189 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1191 #define mdio_delay() RTL_R8(Config4)
1194 static const char mii_2_8139_map[8] = {
1206 #ifdef CONFIG_8139TOO_8129
1207 /* Syncronize the MII management interface by shifting 32 one bits out. */
1208 static void mdio_sync (void __iomem *ioaddr)
1212 for (i = 32; i >= 0; i--) {
1213 RTL_W8 (Config4, MDIO_WRITE1);
1215 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1221 static int mdio_read (struct net_device *dev, int phy_id, int location)
1223 struct rtl8139_private *tp = netdev_priv(dev);
1225 #ifdef CONFIG_8139TOO_8129
1226 void __iomem *ioaddr = tp->mmio_addr;
1227 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1231 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1232 void __iomem *ioaddr = tp->mmio_addr;
1233 return location < 8 && mii_2_8139_map[location] ?
1234 RTL_R16 (mii_2_8139_map[location]) : 0;
1237 #ifdef CONFIG_8139TOO_8129
1239 /* Shift the read command bits out. */
1240 for (i = 15; i >= 0; i--) {
1241 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1243 RTL_W8 (Config4, MDIO_DIR | dataval);
1245 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1249 /* Read the two transition, 16 data, and wire-idle bits. */
1250 for (i = 19; i > 0; i--) {
1251 RTL_W8 (Config4, 0);
1253 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1254 RTL_W8 (Config4, MDIO_CLK);
1259 return (retval >> 1) & 0xffff;
1263 static void mdio_write (struct net_device *dev, int phy_id, int location,
1266 struct rtl8139_private *tp = netdev_priv(dev);
1267 #ifdef CONFIG_8139TOO_8129
1268 void __iomem *ioaddr = tp->mmio_addr;
1269 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1273 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1274 void __iomem *ioaddr = tp->mmio_addr;
1275 if (location == 0) {
1276 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1277 RTL_W16 (BasicModeCtrl, value);
1278 RTL_W8 (Cfg9346, Cfg9346_Lock);
1279 } else if (location < 8 && mii_2_8139_map[location])
1280 RTL_W16 (mii_2_8139_map[location], value);
1284 #ifdef CONFIG_8139TOO_8129
1287 /* Shift the command bits out. */
1288 for (i = 31; i >= 0; i--) {
1290 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1291 RTL_W8 (Config4, dataval);
1293 RTL_W8 (Config4, dataval | MDIO_CLK);
1296 /* Clear out extra bits. */
1297 for (i = 2; i > 0; i--) {
1298 RTL_W8 (Config4, 0);
1300 RTL_W8 (Config4, MDIO_CLK);
1307 static int rtl8139_open (struct net_device *dev)
1309 struct rtl8139_private *tp = netdev_priv(dev);
1311 void __iomem *ioaddr = tp->mmio_addr;
1313 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev);
1317 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1319 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1321 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1322 free_irq(dev->irq, dev);
1325 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1326 tp->tx_bufs, tp->tx_bufs_dma);
1328 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1329 tp->rx_ring, tp->rx_ring_dma);
1335 tp->mii.full_duplex = tp->mii.force_media;
1336 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1338 rtl8139_init_ring (dev);
1339 rtl8139_hw_start (dev);
1340 netif_start_queue (dev);
1342 if (netif_msg_ifup(tp))
1343 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#llx IRQ %d"
1344 " GP Pins %2.2x %s-duplex.\n", dev->name,
1345 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1346 dev->irq, RTL_R8 (MediaStatus),
1347 tp->mii.full_duplex ? "full" : "half");
1349 rtl8139_start_thread(tp);
1355 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1357 struct rtl8139_private *tp = netdev_priv(dev);
1359 if (tp->phys[0] >= 0) {
1360 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1364 /* Start the hardware at open or resume. */
1365 static void rtl8139_hw_start (struct net_device *dev)
1367 struct rtl8139_private *tp = netdev_priv(dev);
1368 void __iomem *ioaddr = tp->mmio_addr;
1372 /* Bring old chips out of low-power mode. */
1373 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1374 RTL_W8 (HltClk, 'R');
1376 rtl8139_chip_reset (ioaddr);
1378 /* unlock Config[01234] and BMCR register writes */
1379 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1380 /* Restore our idea of the MAC address. */
1381 RTL_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1382 RTL_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1384 /* Must enable Tx/Rx before setting transfer thresholds! */
1385 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1387 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1388 RTL_W32 (RxConfig, tp->rx_config);
1389 RTL_W32 (TxConfig, rtl8139_tx_config);
1393 rtl_check_media (dev, 1);
1395 if (tp->chipset >= CH_8139B) {
1396 /* Disable magic packet scanning, which is enabled
1397 * when PM is enabled in Config1. It can be reenabled
1398 * via ETHTOOL_SWOL if desired. */
1399 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1402 DPRINTK("init buffer addresses\n");
1404 /* Lock Config[01234] and BMCR register writes */
1405 RTL_W8 (Cfg9346, Cfg9346_Lock);
1407 /* init Rx ring buffer DMA address */
1408 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1410 /* init Tx buffer DMA addresses */
1411 for (i = 0; i < NUM_TX_DESC; i++)
1412 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1414 RTL_W32 (RxMissed, 0);
1416 rtl8139_set_rx_mode (dev);
1418 /* no early-rx interrupts */
1419 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1421 /* make sure RxTx has started */
1422 tmp = RTL_R8 (ChipCmd);
1423 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1424 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1426 /* Enable all known interrupts by setting the interrupt mask. */
1427 RTL_W16 (IntrMask, rtl8139_intr_mask);
1431 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1432 static void rtl8139_init_ring (struct net_device *dev)
1434 struct rtl8139_private *tp = netdev_priv(dev);
1441 for (i = 0; i < NUM_TX_DESC; i++)
1442 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1446 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1447 static int next_tick = 3 * HZ;
1449 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1450 static inline void rtl8139_tune_twister (struct net_device *dev,
1451 struct rtl8139_private *tp) {}
1453 enum TwisterParamVals {
1454 PARA78_default = 0x78fa8388,
1455 PARA7c_default = 0xcb38de43, /* param[0][3] */
1456 PARA7c_xxx = 0xcb38de43,
1459 static const unsigned long param[4][4] = {
1460 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1461 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1462 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1463 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1466 static void rtl8139_tune_twister (struct net_device *dev,
1467 struct rtl8139_private *tp)
1470 void __iomem *ioaddr = tp->mmio_addr;
1472 /* This is a complicated state machine to configure the "twister" for
1473 impedance/echos based on the cable length.
1474 All of this is magic and undocumented.
1476 switch (tp->twistie) {
1478 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1479 /* We have link beat, let us tune the twister. */
1480 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1481 tp->twistie = 2; /* Change to state 2. */
1482 next_tick = HZ / 10;
1484 /* Just put in some reasonable defaults for when beat returns. */
1485 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1486 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1487 RTL_W32 (PARA78, PARA78_default);
1488 RTL_W32 (PARA7c, PARA7c_default);
1489 tp->twistie = 0; /* Bail from future actions. */
1493 /* Read how long it took to hear the echo. */
1494 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1495 if (linkcase == 0x7000)
1497 else if (linkcase == 0x3000)
1499 else if (linkcase == 0x1000)
1504 tp->twistie = 3; /* Change to state 2. */
1505 next_tick = HZ / 10;
1508 /* Put out four tuning parameters, one per 100msec. */
1509 if (tp->twist_col == 0)
1510 RTL_W16 (FIFOTMS, 0);
1511 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1512 [(int) tp->twist_col]);
1513 next_tick = HZ / 10;
1514 if (++tp->twist_col >= 4) {
1515 /* For short cables we are done.
1516 For long cables (row == 3) check for mistune. */
1518 (tp->twist_row == 3) ? 4 : 0;
1522 /* Special case for long cables: check for mistune. */
1523 if ((RTL_R16 (CSCR) &
1524 CSCR_LinkStatusBits) == 0x7000) {
1528 RTL_W32 (PARA7c, 0xfb38de03);
1530 next_tick = HZ / 10;
1534 /* Retune for shorter cable (column 2). */
1535 RTL_W32 (FIFOTMS, 0x20);
1536 RTL_W32 (PARA78, PARA78_default);
1537 RTL_W32 (PARA7c, PARA7c_default);
1538 RTL_W32 (FIFOTMS, 0x00);
1542 next_tick = HZ / 10;
1550 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1552 static inline void rtl8139_thread_iter (struct net_device *dev,
1553 struct rtl8139_private *tp,
1554 void __iomem *ioaddr)
1558 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1560 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1561 int duplex = (mii_lpa & LPA_100FULL)
1562 || (mii_lpa & 0x01C0) == 0x0040;
1563 if (tp->mii.full_duplex != duplex) {
1564 tp->mii.full_duplex = duplex;
1568 "%s: Setting %s-duplex based on MII #%d link"
1569 " partner ability of %4.4x.\n",
1571 tp->mii.full_duplex ? "full" : "half",
1572 tp->phys[0], mii_lpa);
1574 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1578 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1579 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1580 RTL_W8 (Cfg9346, Cfg9346_Lock);
1585 next_tick = HZ * 60;
1587 rtl8139_tune_twister (dev, tp);
1589 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1590 dev->name, RTL_R16 (NWayLPAR));
1591 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1592 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1593 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1594 dev->name, RTL_R8 (Config0),
1598 static void rtl8139_thread (struct work_struct *work)
1600 struct rtl8139_private *tp =
1601 container_of(work, struct rtl8139_private, thread.work);
1602 struct net_device *dev = tp->mii.dev;
1603 unsigned long thr_delay = next_tick;
1607 if (!netif_running(dev))
1610 if (tp->watchdog_fired) {
1611 tp->watchdog_fired = 0;
1612 rtl8139_tx_timeout_task(work);
1614 rtl8139_thread_iter(dev, tp, tp->mmio_addr);
1616 if (tp->have_thread)
1617 schedule_delayed_work(&tp->thread, thr_delay);
1622 static void rtl8139_start_thread(struct rtl8139_private *tp)
1625 if (tp->chipset == CH_8139_K)
1627 else if (tp->drv_flags & HAS_LNK_CHNG)
1630 tp->have_thread = 1;
1631 tp->watchdog_fired = 0;
1633 schedule_delayed_work(&tp->thread, next_tick);
1636 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1641 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1644 static void rtl8139_tx_timeout_task (struct work_struct *work)
1646 struct rtl8139_private *tp =
1647 container_of(work, struct rtl8139_private, thread.work);
1648 struct net_device *dev = tp->mii.dev;
1649 void __iomem *ioaddr = tp->mmio_addr;
1653 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1654 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1655 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1656 /* Emit info to figure out what went wrong. */
1657 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1658 dev->name, tp->cur_tx, tp->dirty_tx);
1659 for (i = 0; i < NUM_TX_DESC; i++)
1660 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1661 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1662 i == tp->dirty_tx % NUM_TX_DESC ?
1663 " (queue head)" : "");
1665 tp->xstats.tx_timeouts++;
1667 /* disable Tx ASAP, if not already */
1668 tmp8 = RTL_R8 (ChipCmd);
1669 if (tmp8 & CmdTxEnb)
1670 RTL_W8 (ChipCmd, CmdRxEnb);
1672 spin_lock_bh(&tp->rx_lock);
1673 /* Disable interrupts by clearing the interrupt mask. */
1674 RTL_W16 (IntrMask, 0x0000);
1676 /* Stop a shared interrupt from scavenging while we are. */
1677 spin_lock_irq(&tp->lock);
1678 rtl8139_tx_clear (tp);
1679 spin_unlock_irq(&tp->lock);
1681 /* ...and finally, reset everything */
1682 if (netif_running(dev)) {
1683 rtl8139_hw_start (dev);
1684 netif_wake_queue (dev);
1686 spin_unlock_bh(&tp->rx_lock);
1689 static void rtl8139_tx_timeout (struct net_device *dev)
1691 struct rtl8139_private *tp = netdev_priv(dev);
1693 tp->watchdog_fired = 1;
1694 if (!tp->have_thread) {
1695 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1696 schedule_delayed_work(&tp->thread, next_tick);
1700 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1702 struct rtl8139_private *tp = netdev_priv(dev);
1703 void __iomem *ioaddr = tp->mmio_addr;
1705 unsigned int len = skb->len;
1706 unsigned long flags;
1708 /* Calculate the next Tx descriptor entry. */
1709 entry = tp->cur_tx % NUM_TX_DESC;
1711 /* Note: the chip doesn't have auto-pad! */
1712 if (likely(len < TX_BUF_SIZE)) {
1714 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1715 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1719 tp->stats.tx_dropped++;
1723 spin_lock_irqsave(&tp->lock, flags);
1724 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1725 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1727 dev->trans_start = jiffies;
1732 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1733 netif_stop_queue (dev);
1734 spin_unlock_irqrestore(&tp->lock, flags);
1736 if (netif_msg_tx_queued(tp))
1737 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1738 dev->name, len, entry);
1744 static void rtl8139_tx_interrupt (struct net_device *dev,
1745 struct rtl8139_private *tp,
1746 void __iomem *ioaddr)
1748 unsigned long dirty_tx, tx_left;
1750 assert (dev != NULL);
1751 assert (ioaddr != NULL);
1753 dirty_tx = tp->dirty_tx;
1754 tx_left = tp->cur_tx - dirty_tx;
1755 while (tx_left > 0) {
1756 int entry = dirty_tx % NUM_TX_DESC;
1759 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1761 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1762 break; /* It still hasn't been Txed */
1764 /* Note: TxCarrierLost is always asserted at 100mbps. */
1765 if (txstatus & (TxOutOfWindow | TxAborted)) {
1766 /* There was an major error, log it. */
1767 if (netif_msg_tx_err(tp))
1768 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1769 dev->name, txstatus);
1770 tp->stats.tx_errors++;
1771 if (txstatus & TxAborted) {
1772 tp->stats.tx_aborted_errors++;
1773 RTL_W32 (TxConfig, TxClearAbt);
1774 RTL_W16 (IntrStatus, TxErr);
1777 if (txstatus & TxCarrierLost)
1778 tp->stats.tx_carrier_errors++;
1779 if (txstatus & TxOutOfWindow)
1780 tp->stats.tx_window_errors++;
1782 if (txstatus & TxUnderrun) {
1783 /* Add 64 to the Tx FIFO threshold. */
1784 if (tp->tx_flag < 0x00300000)
1785 tp->tx_flag += 0x00020000;
1786 tp->stats.tx_fifo_errors++;
1788 tp->stats.collisions += (txstatus >> 24) & 15;
1789 tp->stats.tx_bytes += txstatus & 0x7ff;
1790 tp->stats.tx_packets++;
1797 #ifndef RTL8139_NDEBUG
1798 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1799 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1800 dev->name, dirty_tx, tp->cur_tx);
1801 dirty_tx += NUM_TX_DESC;
1803 #endif /* RTL8139_NDEBUG */
1805 /* only wake the queue if we did work, and the queue is stopped */
1806 if (tp->dirty_tx != dirty_tx) {
1807 tp->dirty_tx = dirty_tx;
1809 netif_wake_queue (dev);
1814 /* TODO: clean this up! Rx reset need not be this intensive */
1815 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1816 struct rtl8139_private *tp, void __iomem *ioaddr)
1819 #ifdef CONFIG_8139_OLD_RX_RESET
1823 if (netif_msg_rx_err (tp))
1824 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1825 dev->name, rx_status);
1826 tp->stats.rx_errors++;
1827 if (!(rx_status & RxStatusOK)) {
1828 if (rx_status & RxTooLong) {
1829 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1830 dev->name, rx_status);
1831 /* A.C.: The chip hangs here. */
1833 if (rx_status & (RxBadSymbol | RxBadAlign))
1834 tp->stats.rx_frame_errors++;
1835 if (rx_status & (RxRunt | RxTooLong))
1836 tp->stats.rx_length_errors++;
1837 if (rx_status & RxCRCErr)
1838 tp->stats.rx_crc_errors++;
1840 tp->xstats.rx_lost_in_ring++;
1843 #ifndef CONFIG_8139_OLD_RX_RESET
1844 tmp8 = RTL_R8 (ChipCmd);
1845 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1846 RTL_W8 (ChipCmd, tmp8);
1847 RTL_W32 (RxConfig, tp->rx_config);
1850 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1852 /* disable receive */
1853 RTL_W8_F (ChipCmd, CmdTxEnb);
1855 while (--tmp_work > 0) {
1857 tmp8 = RTL_R8 (ChipCmd);
1858 if (!(tmp8 & CmdRxEnb))
1862 printk (KERN_WARNING PFX "rx stop wait too long\n");
1863 /* restart receive */
1865 while (--tmp_work > 0) {
1866 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1868 tmp8 = RTL_R8 (ChipCmd);
1869 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1873 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1875 /* and reinitialize all rx related registers */
1876 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1877 /* Must enable Tx/Rx before setting transfer thresholds! */
1878 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1880 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1881 RTL_W32 (RxConfig, tp->rx_config);
1884 DPRINTK("init buffer addresses\n");
1886 /* Lock Config[01234] and BMCR register writes */
1887 RTL_W8 (Cfg9346, Cfg9346_Lock);
1889 /* init Rx ring buffer DMA address */
1890 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1892 /* A.C.: Reset the multicast list. */
1893 __set_rx_mode (dev);
1898 static __inline__ void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1899 u32 offset, unsigned int size)
1901 u32 left = RX_BUF_LEN - offset;
1904 skb_copy_to_linear_data(skb, ring + offset, left);
1905 skb_copy_to_linear_data_offset(skb, left, ring, size - left);
1907 skb_copy_to_linear_data(skb, ring + offset, size);
1911 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1913 void __iomem *ioaddr = tp->mmio_addr;
1916 status = RTL_R16 (IntrStatus) & RxAckBits;
1918 /* Clear out errors and receive interrupts */
1919 if (likely(status != 0)) {
1920 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1921 tp->stats.rx_errors++;
1922 if (status & RxFIFOOver)
1923 tp->stats.rx_fifo_errors++;
1925 RTL_W16_F (IntrStatus, RxAckBits);
1929 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1932 void __iomem *ioaddr = tp->mmio_addr;
1934 unsigned char *rx_ring = tp->rx_ring;
1935 unsigned int cur_rx = tp->cur_rx;
1936 unsigned int rx_size = 0;
1938 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1939 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1940 RTL_R16 (RxBufAddr),
1941 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1943 while (netif_running(dev) && received < budget
1944 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1945 u32 ring_offset = cur_rx % RX_BUF_LEN;
1947 unsigned int pkt_size;
1948 struct sk_buff *skb;
1952 /* read size+status of next frame from DMA ring buffer */
1953 rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset));
1954 rx_size = rx_status >> 16;
1955 pkt_size = rx_size - 4;
1957 if (netif_msg_rx_status(tp))
1958 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1959 " cur %4.4x.\n", dev->name, rx_status,
1961 #if RTL8139_DEBUG > 2
1964 DPRINTK ("%s: Frame contents ", dev->name);
1965 for (i = 0; i < 70; i++)
1967 rx_ring[ring_offset + i]);
1972 /* Packet copy from FIFO still in progress.
1973 * Theoretically, this should never happen
1974 * since EarlyRx is disabled.
1976 if (unlikely(rx_size == 0xfff0)) {
1977 if (!tp->fifo_copy_timeout)
1978 tp->fifo_copy_timeout = jiffies + 2;
1979 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1980 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1984 if (netif_msg_intr(tp)) {
1985 printk(KERN_DEBUG "%s: fifo copy in progress.",
1988 tp->xstats.early_rx++;
1993 tp->fifo_copy_timeout = 0;
1995 /* If Rx err or invalid rx_size/rx_status received
1996 * (which happens if we get lost in the ring),
1997 * Rx process gets reset, so we abort any further
2000 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2002 (!(rx_status & RxStatusOK)))) {
2003 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2008 /* Malloc up new buffer, compatible with net-2e. */
2009 /* Omit the four octet CRC from the length. */
2011 skb = dev_alloc_skb (pkt_size + 2);
2013 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
2015 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2017 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
2019 skb_put (skb, pkt_size);
2021 skb->protocol = eth_type_trans (skb, dev);
2023 dev->last_rx = jiffies;
2024 tp->stats.rx_bytes += pkt_size;
2025 tp->stats.rx_packets++;
2027 netif_receive_skb (skb);
2029 if (net_ratelimit())
2030 printk (KERN_WARNING
2031 "%s: Memory squeeze, dropping packet.\n",
2033 tp->stats.rx_dropped++;
2037 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2038 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2040 rtl8139_isr_ack(tp);
2043 if (unlikely(!received || rx_size == 0xfff0))
2044 rtl8139_isr_ack(tp);
2046 #if RTL8139_DEBUG > 1
2047 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2048 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2049 RTL_R16 (RxBufAddr),
2050 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2053 tp->cur_rx = cur_rx;
2056 * The receive buffer should be mostly empty.
2057 * Tell NAPI to reenable the Rx irq.
2059 if (tp->fifo_copy_timeout)
2067 static void rtl8139_weird_interrupt (struct net_device *dev,
2068 struct rtl8139_private *tp,
2069 void __iomem *ioaddr,
2070 int status, int link_changed)
2072 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2075 assert (dev != NULL);
2076 assert (tp != NULL);
2077 assert (ioaddr != NULL);
2079 /* Update the error count. */
2080 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2081 RTL_W32 (RxMissed, 0);
2083 if ((status & RxUnderrun) && link_changed &&
2084 (tp->drv_flags & HAS_LNK_CHNG)) {
2085 rtl_check_media(dev, 0);
2086 status &= ~RxUnderrun;
2089 if (status & (RxUnderrun | RxErr))
2090 tp->stats.rx_errors++;
2092 if (status & PCSTimeout)
2093 tp->stats.rx_length_errors++;
2094 if (status & RxUnderrun)
2095 tp->stats.rx_fifo_errors++;
2096 if (status & PCIErr) {
2098 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2099 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2101 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2102 dev->name, pci_cmd_status);
2106 static int rtl8139_poll(struct net_device *dev, int *budget)
2108 struct rtl8139_private *tp = netdev_priv(dev);
2109 void __iomem *ioaddr = tp->mmio_addr;
2110 int orig_budget = min(*budget, dev->quota);
2113 spin_lock(&tp->rx_lock);
2114 if (likely(RTL_R16(IntrStatus) & RxAckBits)) {
2117 work_done = rtl8139_rx(dev, tp, orig_budget);
2118 if (likely(work_done > 0)) {
2119 *budget -= work_done;
2120 dev->quota -= work_done;
2121 done = (work_done < orig_budget);
2126 unsigned long flags;
2128 * Order is important since data can get interrupted
2129 * again when we think we are done.
2131 local_irq_save(flags);
2132 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2133 __netif_rx_complete(dev);
2134 local_irq_restore(flags);
2136 spin_unlock(&tp->rx_lock);
2141 /* The interrupt handler does all of the Rx thread work and cleans up
2142 after the Tx thread. */
2143 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance)
2145 struct net_device *dev = (struct net_device *) dev_instance;
2146 struct rtl8139_private *tp = netdev_priv(dev);
2147 void __iomem *ioaddr = tp->mmio_addr;
2148 u16 status, ackstat;
2149 int link_changed = 0; /* avoid bogus "uninit" warning */
2152 spin_lock (&tp->lock);
2153 status = RTL_R16 (IntrStatus);
2156 if (unlikely((status & rtl8139_intr_mask) == 0))
2161 /* h/w no longer present (hotplug?) or major error, bail */
2162 if (unlikely(status == 0xFFFF))
2165 /* close possible race's with dev_close */
2166 if (unlikely(!netif_running(dev))) {
2167 RTL_W16 (IntrMask, 0);
2171 /* Acknowledge all of the current interrupt sources ASAP, but
2172 an first get an additional status bit from CSCR. */
2173 if (unlikely(status & RxUnderrun))
2174 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2176 ackstat = status & ~(RxAckBits | TxErr);
2178 RTL_W16 (IntrStatus, ackstat);
2180 /* Receive packets are processed by poll routine.
2181 If not running start it now. */
2182 if (status & RxAckBits){
2183 if (netif_rx_schedule_prep(dev)) {
2184 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2185 __netif_rx_schedule (dev);
2189 /* Check uncommon events with one test. */
2190 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2191 rtl8139_weird_interrupt (dev, tp, ioaddr,
2192 status, link_changed);
2194 if (status & (TxOK | TxErr)) {
2195 rtl8139_tx_interrupt (dev, tp, ioaddr);
2197 RTL_W16 (IntrStatus, TxErr);
2200 spin_unlock (&tp->lock);
2202 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2203 dev->name, RTL_R16 (IntrStatus));
2204 return IRQ_RETVAL(handled);
2207 #ifdef CONFIG_NET_POLL_CONTROLLER
2209 * Polling receive - used by netconsole and other diagnostic tools
2210 * to allow network i/o with interrupts disabled.
2212 static void rtl8139_poll_controller(struct net_device *dev)
2214 disable_irq(dev->irq);
2215 rtl8139_interrupt(dev->irq, dev);
2216 enable_irq(dev->irq);
2220 static int rtl8139_close (struct net_device *dev)
2222 struct rtl8139_private *tp = netdev_priv(dev);
2223 void __iomem *ioaddr = tp->mmio_addr;
2224 unsigned long flags;
2226 netif_stop_queue (dev);
2228 if (netif_msg_ifdown(tp))
2229 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2230 dev->name, RTL_R16 (IntrStatus));
2232 spin_lock_irqsave (&tp->lock, flags);
2234 /* Stop the chip's Tx and Rx DMA processes. */
2235 RTL_W8 (ChipCmd, 0);
2237 /* Disable interrupts by clearing the interrupt mask. */
2238 RTL_W16 (IntrMask, 0);
2240 /* Update the error counts. */
2241 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2242 RTL_W32 (RxMissed, 0);
2244 spin_unlock_irqrestore (&tp->lock, flags);
2246 synchronize_irq (dev->irq); /* racy, but that's ok here */
2247 free_irq (dev->irq, dev);
2249 rtl8139_tx_clear (tp);
2251 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
2252 tp->rx_ring, tp->rx_ring_dma);
2253 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
2254 tp->tx_bufs, tp->tx_bufs_dma);
2258 /* Green! Put the chip in low-power mode. */
2259 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2261 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2262 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2268 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2269 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2270 other threads or interrupts aren't messing with the 8139. */
2271 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2273 struct rtl8139_private *np = netdev_priv(dev);
2274 void __iomem *ioaddr = np->mmio_addr;
2276 spin_lock_irq(&np->lock);
2277 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2278 u8 cfg3 = RTL_R8 (Config3);
2279 u8 cfg5 = RTL_R8 (Config5);
2281 wol->supported = WAKE_PHY | WAKE_MAGIC
2282 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2285 if (cfg3 & Cfg3_LinkUp)
2286 wol->wolopts |= WAKE_PHY;
2287 if (cfg3 & Cfg3_Magic)
2288 wol->wolopts |= WAKE_MAGIC;
2289 /* (KON)FIXME: See how netdev_set_wol() handles the
2290 following constants. */
2291 if (cfg5 & Cfg5_UWF)
2292 wol->wolopts |= WAKE_UCAST;
2293 if (cfg5 & Cfg5_MWF)
2294 wol->wolopts |= WAKE_MCAST;
2295 if (cfg5 & Cfg5_BWF)
2296 wol->wolopts |= WAKE_BCAST;
2298 spin_unlock_irq(&np->lock);
2302 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2303 that wol points to kernel memory and other threads or interrupts
2304 aren't messing with the 8139. */
2305 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2307 struct rtl8139_private *np = netdev_priv(dev);
2308 void __iomem *ioaddr = np->mmio_addr;
2312 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2313 ? (WAKE_PHY | WAKE_MAGIC
2314 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2316 if (wol->wolopts & ~support)
2319 spin_lock_irq(&np->lock);
2320 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2321 if (wol->wolopts & WAKE_PHY)
2322 cfg3 |= Cfg3_LinkUp;
2323 if (wol->wolopts & WAKE_MAGIC)
2325 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2326 RTL_W8 (Config3, cfg3);
2327 RTL_W8 (Cfg9346, Cfg9346_Lock);
2329 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2330 /* (KON)FIXME: These are untested. We may have to set the
2331 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2333 if (wol->wolopts & WAKE_UCAST)
2335 if (wol->wolopts & WAKE_MCAST)
2337 if (wol->wolopts & WAKE_BCAST)
2339 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2340 spin_unlock_irq(&np->lock);
2345 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2347 struct rtl8139_private *np = netdev_priv(dev);
2348 strcpy(info->driver, DRV_NAME);
2349 strcpy(info->version, DRV_VERSION);
2350 strcpy(info->bus_info, pci_name(np->pci_dev));
2351 info->regdump_len = np->regs_len;
2354 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2356 struct rtl8139_private *np = netdev_priv(dev);
2357 spin_lock_irq(&np->lock);
2358 mii_ethtool_gset(&np->mii, cmd);
2359 spin_unlock_irq(&np->lock);
2363 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2365 struct rtl8139_private *np = netdev_priv(dev);
2367 spin_lock_irq(&np->lock);
2368 rc = mii_ethtool_sset(&np->mii, cmd);
2369 spin_unlock_irq(&np->lock);
2373 static int rtl8139_nway_reset(struct net_device *dev)
2375 struct rtl8139_private *np = netdev_priv(dev);
2376 return mii_nway_restart(&np->mii);
2379 static u32 rtl8139_get_link(struct net_device *dev)
2381 struct rtl8139_private *np = netdev_priv(dev);
2382 return mii_link_ok(&np->mii);
2385 static u32 rtl8139_get_msglevel(struct net_device *dev)
2387 struct rtl8139_private *np = netdev_priv(dev);
2388 return np->msg_enable;
2391 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2393 struct rtl8139_private *np = netdev_priv(dev);
2394 np->msg_enable = datum;
2397 /* TODO: we are too slack to do reg dumping for pio, for now */
2398 #ifdef CONFIG_8139TOO_PIO
2399 #define rtl8139_get_regs_len NULL
2400 #define rtl8139_get_regs NULL
2402 static int rtl8139_get_regs_len(struct net_device *dev)
2404 struct rtl8139_private *np = netdev_priv(dev);
2405 return np->regs_len;
2408 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2410 struct rtl8139_private *np = netdev_priv(dev);
2412 regs->version = RTL_REGS_VER;
2414 spin_lock_irq(&np->lock);
2415 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2416 spin_unlock_irq(&np->lock);
2418 #endif /* CONFIG_8139TOO_MMIO */
2420 static int rtl8139_get_stats_count(struct net_device *dev)
2422 return RTL_NUM_STATS;
2425 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2427 struct rtl8139_private *np = netdev_priv(dev);
2429 data[0] = np->xstats.early_rx;
2430 data[1] = np->xstats.tx_buf_mapped;
2431 data[2] = np->xstats.tx_timeouts;
2432 data[3] = np->xstats.rx_lost_in_ring;
2435 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2437 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2440 static const struct ethtool_ops rtl8139_ethtool_ops = {
2441 .get_drvinfo = rtl8139_get_drvinfo,
2442 .get_settings = rtl8139_get_settings,
2443 .set_settings = rtl8139_set_settings,
2444 .get_regs_len = rtl8139_get_regs_len,
2445 .get_regs = rtl8139_get_regs,
2446 .nway_reset = rtl8139_nway_reset,
2447 .get_link = rtl8139_get_link,
2448 .get_msglevel = rtl8139_get_msglevel,
2449 .set_msglevel = rtl8139_set_msglevel,
2450 .get_wol = rtl8139_get_wol,
2451 .set_wol = rtl8139_set_wol,
2452 .get_strings = rtl8139_get_strings,
2453 .get_stats_count = rtl8139_get_stats_count,
2454 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2457 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2459 struct rtl8139_private *np = netdev_priv(dev);
2462 if (!netif_running(dev))
2465 spin_lock_irq(&np->lock);
2466 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2467 spin_unlock_irq(&np->lock);
2473 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2475 struct rtl8139_private *tp = netdev_priv(dev);
2476 void __iomem *ioaddr = tp->mmio_addr;
2477 unsigned long flags;
2479 if (netif_running(dev)) {
2480 spin_lock_irqsave (&tp->lock, flags);
2481 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2482 RTL_W32 (RxMissed, 0);
2483 spin_unlock_irqrestore (&tp->lock, flags);
2489 /* Set or clear the multicast filter for this adaptor.
2490 This routine is not state sensitive and need not be SMP locked. */
2492 static void __set_rx_mode (struct net_device *dev)
2494 struct rtl8139_private *tp = netdev_priv(dev);
2495 void __iomem *ioaddr = tp->mmio_addr;
2496 u32 mc_filter[2]; /* Multicast hash filter */
2500 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2501 dev->name, dev->flags, RTL_R32 (RxConfig));
2503 /* Note: do not reorder, GCC is clever about common statements. */
2504 if (dev->flags & IFF_PROMISC) {
2506 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2508 mc_filter[1] = mc_filter[0] = 0xffffffff;
2509 } else if ((dev->mc_count > multicast_filter_limit)
2510 || (dev->flags & IFF_ALLMULTI)) {
2511 /* Too many to filter perfectly -- accept all multicasts. */
2512 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2513 mc_filter[1] = mc_filter[0] = 0xffffffff;
2515 struct dev_mc_list *mclist;
2516 rx_mode = AcceptBroadcast | AcceptMyPhys;
2517 mc_filter[1] = mc_filter[0] = 0;
2518 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2519 i++, mclist = mclist->next) {
2520 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2522 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2523 rx_mode |= AcceptMulticast;
2527 /* We can safely update without stopping the chip. */
2528 tmp = rtl8139_rx_config | rx_mode;
2529 if (tp->rx_config != tmp) {
2530 RTL_W32_F (RxConfig, tmp);
2531 tp->rx_config = tmp;
2533 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2534 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2537 static void rtl8139_set_rx_mode (struct net_device *dev)
2539 unsigned long flags;
2540 struct rtl8139_private *tp = netdev_priv(dev);
2542 spin_lock_irqsave (&tp->lock, flags);
2544 spin_unlock_irqrestore (&tp->lock, flags);
2549 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2551 struct net_device *dev = pci_get_drvdata (pdev);
2552 struct rtl8139_private *tp = netdev_priv(dev);
2553 void __iomem *ioaddr = tp->mmio_addr;
2554 unsigned long flags;
2556 pci_save_state (pdev);
2558 if (!netif_running (dev))
2561 netif_device_detach (dev);
2563 spin_lock_irqsave (&tp->lock, flags);
2565 /* Disable interrupts, stop Tx and Rx. */
2566 RTL_W16 (IntrMask, 0);
2567 RTL_W8 (ChipCmd, 0);
2569 /* Update the error counts. */
2570 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2571 RTL_W32 (RxMissed, 0);
2573 spin_unlock_irqrestore (&tp->lock, flags);
2575 pci_set_power_state (pdev, PCI_D3hot);
2581 static int rtl8139_resume (struct pci_dev *pdev)
2583 struct net_device *dev = pci_get_drvdata (pdev);
2585 pci_restore_state (pdev);
2586 if (!netif_running (dev))
2588 pci_set_power_state (pdev, PCI_D0);
2589 rtl8139_init_ring (dev);
2590 rtl8139_hw_start (dev);
2591 netif_device_attach (dev);
2595 #endif /* CONFIG_PM */
2598 static struct pci_driver rtl8139_pci_driver = {
2600 .id_table = rtl8139_pci_tbl,
2601 .probe = rtl8139_init_one,
2602 .remove = __devexit_p(rtl8139_remove_one),
2604 .suspend = rtl8139_suspend,
2605 .resume = rtl8139_resume,
2606 #endif /* CONFIG_PM */
2610 static int __init rtl8139_init_module (void)
2612 /* when we're a module, we always print a version message,
2613 * even if no 8139 board is found.
2616 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2619 return pci_register_driver(&rtl8139_pci_driver);
2623 static void __exit rtl8139_cleanup_module (void)
2625 pci_unregister_driver (&rtl8139_pci_driver);
2629 module_init(rtl8139_init_module);
2630 module_exit(rtl8139_cleanup_module);