3 8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux.
5 Maintained by Jeff Garzik <jgarzik@pobox.com>
6 Copyright 2000-2002 Jeff Garzik
8 Much code comes from Donald Becker's rtl8139.c driver,
9 versions 1.13 and older. This driver was originally based
10 on rtl8139.c version 1.07. Header of rtl8139.c version 1.13:
14 Written 1997-2001 by Donald Becker.
15 This software may be used and distributed according to the
16 terms of the GNU General Public License (GPL), incorporated
17 herein by reference. Drivers based on or derived from this
18 code fall under the GPL and must retain the authorship,
19 copyright and license notice. This file is not a complete
20 program and may only be used when the entire operating
21 system is licensed under the GPL.
23 This driver is for boards based on the RTL8129 and RTL8139
26 The author may be reached as becker@scyld.com, or C/O Scyld
27 Computing Corporation 410 Severn Ave., Suite 210 Annapolis
30 Support and updates available at
31 http://www.scyld.com/network/rtl8139.html
33 Twister-tuning table provided by Kinston
34 <shangh@realtek.com.tw>.
38 This software may be used and distributed according to the terms
39 of the GNU General Public License, incorporated herein by reference.
43 Donald Becker - he wrote the original driver, kudos to him!
44 (but please don't e-mail him for support, this isn't his driver)
46 Tigran Aivazian - bug fixes, skbuff free cleanup
48 Martin Mares - suggestions for PCI cleanup
50 David S. Miller - PCI DMA and softnet updates
52 Ernst Gill - fixes ported from BSD driver
54 Daniel Kobras - identified specific locations of
55 posted MMIO write bugginess
57 Gerard Sharp - bug fix, testing and feedback
59 David Ford - Rx ring wrap fix
61 Dan DeMaggio - swapped RTL8139 cards with me, and allowed me
62 to find and fix a crucial bug on older chipsets.
64 Donald Becker/Chris Butterworth/Marcus Westergren -
65 Noticed various Rx packet size-related buglets.
67 Santiago Garcia Mantinan - testing and feedback
69 Jens David - 2.2.x kernel backports
71 Martin Dennett - incredibly helpful insight on undocumented
72 features of the 8139 chips
74 Jean-Jacques Michel - bug fix
76 Tobias Ringström - Rx interrupt status checking suggestion
78 Andrew Morton - Clear blocked signals, avoid
79 buffer overrun setting current->comm.
81 Kalle Olavi Niemitalo - Wake-on-LAN ioctls
83 Robert Kuebel - Save kernel thread from dying on any signal.
85 Submitting bug reports:
87 "rtl8139-diag -mmmaaavvveefN" output
88 enable RTL8139_DEBUG below, and look at 'dmesg' or kernel log
92 #define DRV_NAME "8139too"
93 #define DRV_VERSION "0.9.27"
96 #include <linux/config.h>
97 #include <linux/module.h>
98 #include <linux/kernel.h>
99 #include <linux/compiler.h>
100 #include <linux/pci.h>
101 #include <linux/init.h>
102 #include <linux/ioport.h>
103 #include <linux/netdevice.h>
104 #include <linux/etherdevice.h>
105 #include <linux/rtnetlink.h>
106 #include <linux/delay.h>
107 #include <linux/ethtool.h>
108 #include <linux/mii.h>
109 #include <linux/completion.h>
110 #include <linux/crc32.h>
112 #include <asm/uaccess.h>
115 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
116 #define PFX DRV_NAME ": "
118 /* Default Message level */
119 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
124 /* enable PIO instead of MMIO, if CONFIG_8139TOO_PIO is selected */
125 #ifdef CONFIG_8139TOO_PIO
129 /* define to 1, 2 or 3 to enable copious debugging info */
130 #define RTL8139_DEBUG 0
132 /* define to 1 to disable lightweight runtime debugging checks */
133 #undef RTL8139_NDEBUG
137 /* note: prints function name for you */
138 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
140 # define DPRINTK(fmt, args...)
143 #ifdef RTL8139_NDEBUG
144 # define assert(expr) do {} while (0)
146 # define assert(expr) \
147 if(unlikely(!(expr))) { \
148 printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
149 #expr,__FILE__,__FUNCTION__,__LINE__); \
154 /* A few user-configurable values. */
157 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
158 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
160 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
161 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
162 static int multicast_filter_limit = 32;
164 /* bitmapped message enable number */
165 static int debug = -1;
169 * Warning: 64K ring has hardware issues and may lock up.
171 #if defined(CONFIG_SH_DREAMCAST)
172 #define RX_BUF_IDX 1 /* 16K ring */
174 #define RX_BUF_IDX 2 /* 32K ring */
176 #define RX_BUF_LEN (8192 << RX_BUF_IDX)
177 #define RX_BUF_PAD 16
178 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
180 #if RX_BUF_LEN == 65536
181 #define RX_BUF_TOT_LEN RX_BUF_LEN
183 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
186 /* Number of Tx descriptor registers. */
187 #define NUM_TX_DESC 4
189 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
190 #define MAX_ETH_FRAME_SIZE 1536
192 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
193 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
194 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
196 /* PCI Tuning Parameters
197 Threshold is bytes transferred to chip before transmission starts. */
198 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
200 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
201 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
202 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */
203 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
204 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */
206 /* Operational parameters that usually are not changed. */
207 /* Time in jiffies before concluding the transmitter is hung. */
208 #define TX_TIMEOUT (6*HZ)
212 HAS_MII_XCVR = 0x010000,
213 HAS_CHIP_XCVR = 0x020000,
214 HAS_LNK_CHNG = 0x040000,
217 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */
218 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */
219 #define RTL_MIN_IO_SIZE 0x80
220 #define RTL8139B_IO_SIZE 256
222 #define RTL8129_CAPS HAS_MII_XCVR
223 #define RTL8139_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG
231 /* indexed by board_t, above */
235 } board_info[] __devinitdata = {
236 { "RealTek RTL8139", RTL8139_CAPS },
237 { "RealTek RTL8129", RTL8129_CAPS },
241 static struct pci_device_id rtl8139_pci_tbl[] = {
242 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
243 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
244 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
245 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
246 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
247 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
248 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
249 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
250 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
251 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
252 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
253 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
254 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
255 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
256 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
257 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
258 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
259 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
260 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
262 #ifdef CONFIG_SH_SECUREEDGE5410
263 /* Bogus 8139 silicon reports 8129 without external PROM :-( */
264 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
266 #ifdef CONFIG_8139TOO_8129
267 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 },
270 /* some crazy cards report invalid vendor ids like
271 * 0x0001 here. The other ids are valid and constant,
272 * so we simply don't match on the main vendor id.
274 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 },
275 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 },
276 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 },
280 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl);
283 const char str[ETH_GSTRING_LEN];
284 } ethtool_stats_keys[] = {
288 { "rx_lost_in_ring" },
291 /* The rest of these values should never change. */
293 /* Symbolic offsets to registers. */
294 enum RTL8139_registers {
295 MAC0 = 0, /* Ethernet hardware address. */
296 MAR0 = 8, /* Multicast filter. */
297 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
298 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
307 Timer = 0x48, /* A general-purpose counter. */
308 RxMissed = 0x4C, /* 24 bits valid, write clears. */
315 Config4 = 0x5A, /* absent on RTL-8139A */
319 BasicModeCtrl = 0x62,
320 BasicModeStatus = 0x64,
323 NWayExpansion = 0x6A,
324 /* Undocumented registers, but required for proper operation. */
325 FIFOTMS = 0x70, /* FIFO Control and test. */
326 CSCR = 0x74, /* Chip Status and Configuration Register. */
328 PARA7c = 0x7c, /* Magic transceiver parameter register. */
329 Config5 = 0xD8, /* absent on RTL-8139A */
333 MultiIntrClear = 0xF000,
335 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
345 /* Interrupt register bits, using my own meaningful names. */
346 enum IntrStatusBits {
357 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
364 TxOutOfWindow = 0x20000000,
365 TxAborted = 0x40000000,
366 TxCarrierLost = 0x80000000,
369 RxMulticast = 0x8000,
371 RxBroadcast = 0x2000,
372 RxBadSymbol = 0x0020,
380 /* Bits in RxConfig. */
384 AcceptBroadcast = 0x08,
385 AcceptMulticast = 0x04,
387 AcceptAllPhys = 0x01,
390 /* Bits in TxConfig. */
391 enum tx_config_bits {
393 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
395 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
396 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
397 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
398 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
400 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
401 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
402 TxClearAbt = (1 << 0), /* Clear abort (WO) */
403 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
404 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
406 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
409 /* Bits in Config1 */
411 Cfg1_PM_Enable = 0x01,
412 Cfg1_VPD_Enable = 0x02,
415 LWAKE = 0x10, /* not on 8139, 8139A */
416 Cfg1_Driver_Load = 0x20,
419 SLEEP = (1 << 1), /* only on 8139, 8139A */
420 PWRDN = (1 << 0), /* only on 8139, 8139A */
423 /* Bits in Config3 */
425 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
426 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
427 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
428 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
429 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
430 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
431 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
432 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
435 /* Bits in Config4 */
437 LWPTN = (1 << 2), /* not on 8139, 8139A */
440 /* Bits in Config5 */
442 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
443 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
444 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
445 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
446 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
447 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
448 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
452 /* rx fifo threshold */
454 RxCfgFIFONone = (7 << RxCfgFIFOShift),
458 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
460 /* rx ring buffer length */
462 RxCfgRcv16K = (1 << 11),
463 RxCfgRcv32K = (1 << 12),
464 RxCfgRcv64K = (1 << 11) | (1 << 12),
466 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
470 /* Twister tuning parameters from RealTek.
471 Completely undocumented, but required to tune bad links on some boards. */
473 CSCR_LinkOKBit = 0x0400,
474 CSCR_LinkChangeBit = 0x0800,
475 CSCR_LinkStatusBits = 0x0f000,
476 CSCR_LinkDownOffCmd = 0x003c0,
477 CSCR_LinkDownCmd = 0x0f3c0,
482 Cfg9346_Unlock = 0xC0,
499 HasHltClk = (1 << 0),
503 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
504 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
505 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
507 /* directly indexed by chip_t, above */
508 const static struct {
510 u32 version; /* from RTL8139C/RTL8139D docs */
512 } rtl_chip_info[] = {
514 HW_REVID(1, 0, 0, 0, 0, 0, 0),
519 HW_REVID(1, 1, 0, 0, 0, 0, 0),
524 HW_REVID(1, 1, 1, 0, 0, 0, 0),
525 HasHltClk, /* XXX undocumented? */
529 HW_REVID(1, 1, 1, 0, 0, 1, 0),
530 HasHltClk, /* XXX undocumented? */
534 HW_REVID(1, 1, 1, 1, 0, 0, 0),
539 HW_REVID(1, 1, 1, 1, 1, 0, 0),
544 HW_REVID(1, 1, 1, 0, 1, 0, 0),
549 HW_REVID(1, 1, 1, 1, 0, 1, 0),
554 HW_REVID(1, 1, 1, 0, 1, 0, 1),
559 HW_REVID(1, 1, 1, 0, 1, 1, 1),
564 struct rtl_extra_stats {
565 unsigned long early_rx;
566 unsigned long tx_buf_mapped;
567 unsigned long tx_timeouts;
568 unsigned long rx_lost_in_ring;
571 struct rtl8139_private {
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 default_port:4; /* Last dev->if_port value. */
593 wait_queue_head_t thr_wait;
594 struct completion thr_exited;
596 struct rtl_extra_stats xstats;
598 struct mii_if_info mii;
599 unsigned int regs_len;
600 unsigned long fifo_copy_timeout;
603 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
604 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
605 MODULE_LICENSE("GPL");
606 MODULE_VERSION(DRV_VERSION);
608 module_param(multicast_filter_limit, int, 0);
609 module_param_array(media, int, NULL, 0);
610 module_param_array(full_duplex, int, NULL, 0);
611 module_param(debug, int, 0);
612 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
613 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
614 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
615 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
617 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
618 static int rtl8139_open (struct net_device *dev);
619 static int mdio_read (struct net_device *dev, int phy_id, int location);
620 static void mdio_write (struct net_device *dev, int phy_id, int location,
622 static void rtl8139_start_thread(struct net_device *dev);
623 static void rtl8139_tx_timeout (struct net_device *dev);
624 static void rtl8139_init_ring (struct net_device *dev);
625 static int rtl8139_start_xmit (struct sk_buff *skb,
626 struct net_device *dev);
627 static int rtl8139_poll(struct net_device *dev, int *budget);
628 #ifdef CONFIG_NET_POLL_CONTROLLER
629 static void rtl8139_poll_controller(struct net_device *dev);
631 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
632 struct pt_regs *regs);
633 static int rtl8139_close (struct net_device *dev);
634 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
635 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
636 static void rtl8139_set_rx_mode (struct net_device *dev);
637 static void __set_rx_mode (struct net_device *dev);
638 static void rtl8139_hw_start (struct net_device *dev);
639 static struct ethtool_ops rtl8139_ethtool_ops;
641 /* write MMIO register, with flush */
642 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
643 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
644 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
645 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
648 #define MMIO_FLUSH_AUDIT_COMPLETE 1
649 #if MMIO_FLUSH_AUDIT_COMPLETE
651 /* write MMIO register */
652 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
653 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
654 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
658 /* write MMIO register, then flush */
659 #define RTL_W8 RTL_W8_F
660 #define RTL_W16 RTL_W16_F
661 #define RTL_W32 RTL_W32_F
663 #endif /* MMIO_FLUSH_AUDIT_COMPLETE */
665 /* read MMIO register */
666 #define RTL_R8(reg) ioread8 (ioaddr + (reg))
667 #define RTL_R16(reg) ioread16 (ioaddr + (reg))
668 #define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
671 static const u16 rtl8139_intr_mask =
672 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
673 TxErr | TxOK | RxErr | RxOK;
675 static const u16 rtl8139_norx_intr_mask =
676 PCIErr | PCSTimeout | RxUnderrun |
677 TxErr | TxOK | RxErr ;
680 static const unsigned int rtl8139_rx_config =
681 RxCfgRcv8K | RxNoWrap |
682 (RX_FIFO_THRESH << RxCfgFIFOShift) |
683 (RX_DMA_BURST << RxCfgDMAShift);
684 #elif RX_BUF_IDX == 1
685 static const unsigned int rtl8139_rx_config =
686 RxCfgRcv16K | RxNoWrap |
687 (RX_FIFO_THRESH << RxCfgFIFOShift) |
688 (RX_DMA_BURST << RxCfgDMAShift);
689 #elif RX_BUF_IDX == 2
690 static const unsigned int rtl8139_rx_config =
691 RxCfgRcv32K | RxNoWrap |
692 (RX_FIFO_THRESH << RxCfgFIFOShift) |
693 (RX_DMA_BURST << RxCfgDMAShift);
694 #elif RX_BUF_IDX == 3
695 static const unsigned int rtl8139_rx_config =
697 (RX_FIFO_THRESH << RxCfgFIFOShift) |
698 (RX_DMA_BURST << RxCfgDMAShift);
700 #error "Invalid configuration for 8139_RXBUF_IDX"
703 static const unsigned int rtl8139_tx_config =
704 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
706 static void __rtl8139_cleanup_dev (struct net_device *dev)
708 struct rtl8139_private *tp = netdev_priv(dev);
709 struct pci_dev *pdev;
711 assert (dev != NULL);
712 assert (tp->pci_dev != NULL);
717 ioport_unmap (tp->mmio_addr);
720 pci_iounmap (pdev, tp->mmio_addr);
721 #endif /* USE_IO_OPS */
723 /* it's ok to call this even if we have no regions to free */
724 pci_release_regions (pdev);
727 pci_set_drvdata (pdev, NULL);
731 static void rtl8139_chip_reset (void __iomem *ioaddr)
735 /* Soft reset the chip. */
736 RTL_W8 (ChipCmd, CmdReset);
738 /* Check that the chip has finished the reset. */
739 for (i = 1000; i > 0; i--) {
741 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
748 static int __devinit rtl8139_init_board (struct pci_dev *pdev,
749 struct net_device **dev_out)
751 void __iomem *ioaddr;
752 struct net_device *dev;
753 struct rtl8139_private *tp;
755 int rc, disable_dev_on_err = 0;
757 unsigned long pio_start, pio_end, pio_flags, pio_len;
758 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
761 assert (pdev != NULL);
765 /* dev and priv zeroed in alloc_etherdev */
766 dev = alloc_etherdev (sizeof (*tp));
768 printk (KERN_ERR PFX "%s: Unable to alloc new net device\n", pci_name(pdev));
771 SET_MODULE_OWNER(dev);
772 SET_NETDEV_DEV(dev, &pdev->dev);
774 tp = netdev_priv(dev);
777 /* enable device (incl. PCI PM wakeup and hotplug setup) */
778 rc = pci_enable_device (pdev);
782 pio_start = pci_resource_start (pdev, 0);
783 pio_end = pci_resource_end (pdev, 0);
784 pio_flags = pci_resource_flags (pdev, 0);
785 pio_len = pci_resource_len (pdev, 0);
787 mmio_start = pci_resource_start (pdev, 1);
788 mmio_end = pci_resource_end (pdev, 1);
789 mmio_flags = pci_resource_flags (pdev, 1);
790 mmio_len = pci_resource_len (pdev, 1);
792 /* set this immediately, we need to know before
793 * we talk to the chip directly */
794 DPRINTK("PIO region size == 0x%02X\n", pio_len);
795 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
798 /* make sure PCI base addr 0 is PIO */
799 if (!(pio_flags & IORESOURCE_IO)) {
800 printk (KERN_ERR PFX "%s: region #0 not a PIO resource, aborting\n", pci_name(pdev));
804 /* check for weird/broken PCI region reporting */
805 if (pio_len < RTL_MIN_IO_SIZE) {
806 printk (KERN_ERR PFX "%s: Invalid PCI I/O region size(s), aborting\n", pci_name(pdev));
811 /* make sure PCI base addr 1 is MMIO */
812 if (!(mmio_flags & IORESOURCE_MEM)) {
813 printk (KERN_ERR PFX "%s: region #1 not an MMIO resource, aborting\n", pci_name(pdev));
817 if (mmio_len < RTL_MIN_IO_SIZE) {
818 printk (KERN_ERR PFX "%s: Invalid PCI mem region size(s), aborting\n", pci_name(pdev));
824 rc = pci_request_regions (pdev, "8139too");
827 disable_dev_on_err = 1;
829 /* enable PCI bus-mastering */
830 pci_set_master (pdev);
833 ioaddr = ioport_map(pio_start, pio_len);
835 printk (KERN_ERR PFX "%s: cannot map PIO, aborting\n", pci_name(pdev));
839 dev->base_addr = pio_start;
840 tp->mmio_addr = ioaddr;
841 tp->regs_len = pio_len;
843 /* ioremap MMIO region */
844 ioaddr = pci_iomap(pdev, 1, 0);
845 if (ioaddr == NULL) {
846 printk (KERN_ERR PFX "%s: cannot remap MMIO, aborting\n", pci_name(pdev));
850 dev->base_addr = (long) ioaddr;
851 tp->mmio_addr = ioaddr;
852 tp->regs_len = mmio_len;
853 #endif /* USE_IO_OPS */
855 /* Bring old chips out of low-power mode. */
856 RTL_W8 (HltClk, 'R');
858 /* check for missing/broken hardware */
859 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
860 printk (KERN_ERR PFX "%s: Chip not responding, ignoring board\n",
866 /* identify chip attached to board */
867 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
868 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
869 if (version == rtl_chip_info[i].version) {
874 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
875 printk (KERN_DEBUG PFX "%s: unknown chip version, assuming RTL-8139\n",
877 printk (KERN_DEBUG PFX "%s: TxConfig = 0x%lx\n", pci_name(pdev), RTL_R32 (TxConfig));
881 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
882 version, i, rtl_chip_info[i].name);
884 if (tp->chipset >= CH_8139B) {
885 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
886 DPRINTK("PCI PM wakeup\n");
887 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
890 new_tmp8 |= Cfg1_PM_Enable;
891 if (new_tmp8 != tmp8) {
892 RTL_W8 (Cfg9346, Cfg9346_Unlock);
893 RTL_W8 (Config1, tmp8);
894 RTL_W8 (Cfg9346, Cfg9346_Lock);
896 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
897 tmp8 = RTL_R8 (Config4);
899 RTL_W8 (Cfg9346, Cfg9346_Unlock);
900 RTL_W8 (Config4, tmp8 & ~LWPTN);
901 RTL_W8 (Cfg9346, Cfg9346_Lock);
905 DPRINTK("Old chip wakeup\n");
906 tmp8 = RTL_R8 (Config1);
907 tmp8 &= ~(SLEEP | PWRDN);
908 RTL_W8 (Config1, tmp8);
911 rtl8139_chip_reset (ioaddr);
917 __rtl8139_cleanup_dev (dev);
918 if (disable_dev_on_err)
919 pci_disable_device (pdev);
924 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
925 const struct pci_device_id *ent)
927 struct net_device *dev = NULL;
928 struct rtl8139_private *tp;
929 int i, addr_len, option;
930 void __iomem *ioaddr;
931 static int board_idx = -1;
934 assert (pdev != NULL);
935 assert (ent != NULL);
939 /* when we're built into the kernel, the driver version message
940 * is only printed if at least one 8139 board has been found
944 static int printed_version;
945 if (!printed_version++)
946 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
950 pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
952 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
953 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev >= 0x20) {
954 printk(KERN_INFO PFX "pci dev %s (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
955 pci_name(pdev), pdev->vendor, pdev->device, pci_rev);
956 printk(KERN_INFO PFX "Use the \"8139cp\" driver for improved performance and stability.\n");
959 i = rtl8139_init_board (pdev, &dev);
963 assert (dev != NULL);
964 tp = netdev_priv(dev);
966 ioaddr = tp->mmio_addr;
967 assert (ioaddr != NULL);
969 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
970 for (i = 0; i < 3; i++)
971 ((u16 *) (dev->dev_addr))[i] =
972 le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len));
973 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
975 /* The Rtl8139-specific entries in the device structure. */
976 dev->open = rtl8139_open;
977 dev->hard_start_xmit = rtl8139_start_xmit;
978 dev->poll = rtl8139_poll;
980 dev->stop = rtl8139_close;
981 dev->get_stats = rtl8139_get_stats;
982 dev->set_multicast_list = rtl8139_set_rx_mode;
983 dev->do_ioctl = netdev_ioctl;
984 dev->ethtool_ops = &rtl8139_ethtool_ops;
985 dev->tx_timeout = rtl8139_tx_timeout;
986 dev->watchdog_timeo = TX_TIMEOUT;
987 #ifdef CONFIG_NET_POLL_CONTROLLER
988 dev->poll_controller = rtl8139_poll_controller;
991 /* note: the hardware is not capable of sg/csum/highdma, however
992 * through the use of skb_copy_and_csum_dev we enable these
995 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
997 dev->irq = pdev->irq;
999 /* tp zeroed and aligned in alloc_etherdev */
1000 tp = netdev_priv(dev);
1002 /* note: tp->chipset set in rtl8139_init_board */
1003 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1004 tp->mmio_addr = ioaddr;
1006 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1007 spin_lock_init (&tp->lock);
1008 spin_lock_init (&tp->rx_lock);
1009 init_waitqueue_head (&tp->thr_wait);
1010 init_completion (&tp->thr_exited);
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 unregister_netdev (dev);
1111 __rtl8139_cleanup_dev (dev);
1112 pci_disable_device (pdev);
1116 /* Serial EEPROM section. */
1118 /* EEPROM_Ctrl bits. */
1119 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1120 #define EE_CS 0x08 /* EEPROM chip select. */
1121 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1122 #define EE_WRITE_0 0x00
1123 #define EE_WRITE_1 0x02
1124 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1125 #define EE_ENB (0x80 | EE_CS)
1127 /* Delay between EEPROM clock transitions.
1128 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1131 #define eeprom_delay() RTL_R32(Cfg9346)
1133 /* The EEPROM commands include the alway-set leading bit. */
1134 #define EE_WRITE_CMD (5)
1135 #define EE_READ_CMD (6)
1136 #define EE_ERASE_CMD (7)
1138 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1141 unsigned retval = 0;
1142 int read_cmd = location | (EE_READ_CMD << addr_len);
1144 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1145 RTL_W8 (Cfg9346, EE_ENB);
1148 /* Shift the read command bits out. */
1149 for (i = 4 + addr_len; i >= 0; i--) {
1150 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1151 RTL_W8 (Cfg9346, EE_ENB | dataval);
1153 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1156 RTL_W8 (Cfg9346, EE_ENB);
1159 for (i = 16; i > 0; i--) {
1160 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1163 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1165 RTL_W8 (Cfg9346, EE_ENB);
1169 /* Terminate the EEPROM access. */
1170 RTL_W8 (Cfg9346, ~EE_CS);
1176 /* MII serial management: mostly bogus for now. */
1177 /* Read and write the MII management registers using software-generated
1178 serial MDIO protocol.
1179 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1180 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1181 "overclocking" issues. */
1182 #define MDIO_DIR 0x80
1183 #define MDIO_DATA_OUT 0x04
1184 #define MDIO_DATA_IN 0x02
1185 #define MDIO_CLK 0x01
1186 #define MDIO_WRITE0 (MDIO_DIR)
1187 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1189 #define mdio_delay() RTL_R8(Config4)
1192 static char mii_2_8139_map[8] = {
1204 #ifdef CONFIG_8139TOO_8129
1205 /* Syncronize the MII management interface by shifting 32 one bits out. */
1206 static void mdio_sync (void __iomem *ioaddr)
1210 for (i = 32; i >= 0; i--) {
1211 RTL_W8 (Config4, MDIO_WRITE1);
1213 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1219 static int mdio_read (struct net_device *dev, int phy_id, int location)
1221 struct rtl8139_private *tp = netdev_priv(dev);
1223 #ifdef CONFIG_8139TOO_8129
1224 void __iomem *ioaddr = tp->mmio_addr;
1225 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1229 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1230 void __iomem *ioaddr = tp->mmio_addr;
1231 return location < 8 && mii_2_8139_map[location] ?
1232 RTL_R16 (mii_2_8139_map[location]) : 0;
1235 #ifdef CONFIG_8139TOO_8129
1237 /* Shift the read command bits out. */
1238 for (i = 15; i >= 0; i--) {
1239 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1241 RTL_W8 (Config4, MDIO_DIR | dataval);
1243 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1247 /* Read the two transition, 16 data, and wire-idle bits. */
1248 for (i = 19; i > 0; i--) {
1249 RTL_W8 (Config4, 0);
1251 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1252 RTL_W8 (Config4, MDIO_CLK);
1257 return (retval >> 1) & 0xffff;
1261 static void mdio_write (struct net_device *dev, int phy_id, int location,
1264 struct rtl8139_private *tp = netdev_priv(dev);
1265 #ifdef CONFIG_8139TOO_8129
1266 void __iomem *ioaddr = tp->mmio_addr;
1267 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1271 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1272 void __iomem *ioaddr = tp->mmio_addr;
1273 if (location == 0) {
1274 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1275 RTL_W16 (BasicModeCtrl, value);
1276 RTL_W8 (Cfg9346, Cfg9346_Lock);
1277 } else if (location < 8 && mii_2_8139_map[location])
1278 RTL_W16 (mii_2_8139_map[location], value);
1282 #ifdef CONFIG_8139TOO_8129
1285 /* Shift the command bits out. */
1286 for (i = 31; i >= 0; i--) {
1288 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1289 RTL_W8 (Config4, dataval);
1291 RTL_W8 (Config4, dataval | MDIO_CLK);
1294 /* Clear out extra bits. */
1295 for (i = 2; i > 0; i--) {
1296 RTL_W8 (Config4, 0);
1298 RTL_W8 (Config4, MDIO_CLK);
1305 static int rtl8139_open (struct net_device *dev)
1307 struct rtl8139_private *tp = netdev_priv(dev);
1309 void __iomem *ioaddr = tp->mmio_addr;
1311 retval = request_irq (dev->irq, rtl8139_interrupt, SA_SHIRQ, dev->name, dev);
1315 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1317 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1319 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1320 free_irq(dev->irq, dev);
1323 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1324 tp->tx_bufs, tp->tx_bufs_dma);
1326 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1327 tp->rx_ring, tp->rx_ring_dma);
1333 tp->mii.full_duplex = tp->mii.force_media;
1334 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1336 rtl8139_init_ring (dev);
1337 rtl8139_hw_start (dev);
1338 netif_start_queue (dev);
1340 if (netif_msg_ifup(tp))
1341 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#lx IRQ %d"
1342 " GP Pins %2.2x %s-duplex.\n",
1343 dev->name, pci_resource_start (tp->pci_dev, 1),
1344 dev->irq, RTL_R8 (MediaStatus),
1345 tp->mii.full_duplex ? "full" : "half");
1347 rtl8139_start_thread(dev);
1353 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1355 struct rtl8139_private *tp = netdev_priv(dev);
1357 if (tp->phys[0] >= 0) {
1358 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1362 /* Start the hardware at open or resume. */
1363 static void rtl8139_hw_start (struct net_device *dev)
1365 struct rtl8139_private *tp = netdev_priv(dev);
1366 void __iomem *ioaddr = tp->mmio_addr;
1370 /* Bring old chips out of low-power mode. */
1371 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1372 RTL_W8 (HltClk, 'R');
1374 rtl8139_chip_reset (ioaddr);
1376 /* unlock Config[01234] and BMCR register writes */
1377 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1378 /* Restore our idea of the MAC address. */
1379 RTL_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1380 RTL_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1382 /* Must enable Tx/Rx before setting transfer thresholds! */
1383 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1385 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1386 RTL_W32 (RxConfig, tp->rx_config);
1387 RTL_W32 (TxConfig, rtl8139_tx_config);
1391 rtl_check_media (dev, 1);
1393 if (tp->chipset >= CH_8139B) {
1394 /* Disable magic packet scanning, which is enabled
1395 * when PM is enabled in Config1. It can be reenabled
1396 * via ETHTOOL_SWOL if desired. */
1397 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1400 DPRINTK("init buffer addresses\n");
1402 /* Lock Config[01234] and BMCR register writes */
1403 RTL_W8 (Cfg9346, Cfg9346_Lock);
1405 /* init Rx ring buffer DMA address */
1406 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1408 /* init Tx buffer DMA addresses */
1409 for (i = 0; i < NUM_TX_DESC; i++)
1410 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1412 RTL_W32 (RxMissed, 0);
1414 rtl8139_set_rx_mode (dev);
1416 /* no early-rx interrupts */
1417 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1419 /* make sure RxTx has started */
1420 tmp = RTL_R8 (ChipCmd);
1421 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1422 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1424 /* Enable all known interrupts by setting the interrupt mask. */
1425 RTL_W16 (IntrMask, rtl8139_intr_mask);
1429 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1430 static void rtl8139_init_ring (struct net_device *dev)
1432 struct rtl8139_private *tp = netdev_priv(dev);
1439 for (i = 0; i < NUM_TX_DESC; i++)
1440 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1444 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1445 static int next_tick = 3 * HZ;
1447 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1448 static inline void rtl8139_tune_twister (struct net_device *dev,
1449 struct rtl8139_private *tp) {}
1451 enum TwisterParamVals {
1452 PARA78_default = 0x78fa8388,
1453 PARA7c_default = 0xcb38de43, /* param[0][3] */
1454 PARA7c_xxx = 0xcb38de43,
1457 static const unsigned long param[4][4] = {
1458 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1459 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1460 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1461 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1464 static void rtl8139_tune_twister (struct net_device *dev,
1465 struct rtl8139_private *tp)
1468 void __iomem *ioaddr = tp->mmio_addr;
1470 /* This is a complicated state machine to configure the "twister" for
1471 impedance/echos based on the cable length.
1472 All of this is magic and undocumented.
1474 switch (tp->twistie) {
1476 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1477 /* We have link beat, let us tune the twister. */
1478 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1479 tp->twistie = 2; /* Change to state 2. */
1480 next_tick = HZ / 10;
1482 /* Just put in some reasonable defaults for when beat returns. */
1483 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1484 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1485 RTL_W32 (PARA78, PARA78_default);
1486 RTL_W32 (PARA7c, PARA7c_default);
1487 tp->twistie = 0; /* Bail from future actions. */
1491 /* Read how long it took to hear the echo. */
1492 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1493 if (linkcase == 0x7000)
1495 else if (linkcase == 0x3000)
1497 else if (linkcase == 0x1000)
1502 tp->twistie = 3; /* Change to state 2. */
1503 next_tick = HZ / 10;
1506 /* Put out four tuning parameters, one per 100msec. */
1507 if (tp->twist_col == 0)
1508 RTL_W16 (FIFOTMS, 0);
1509 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1510 [(int) tp->twist_col]);
1511 next_tick = HZ / 10;
1512 if (++tp->twist_col >= 4) {
1513 /* For short cables we are done.
1514 For long cables (row == 3) check for mistune. */
1516 (tp->twist_row == 3) ? 4 : 0;
1520 /* Special case for long cables: check for mistune. */
1521 if ((RTL_R16 (CSCR) &
1522 CSCR_LinkStatusBits) == 0x7000) {
1526 RTL_W32 (PARA7c, 0xfb38de03);
1528 next_tick = HZ / 10;
1532 /* Retune for shorter cable (column 2). */
1533 RTL_W32 (FIFOTMS, 0x20);
1534 RTL_W32 (PARA78, PARA78_default);
1535 RTL_W32 (PARA7c, PARA7c_default);
1536 RTL_W32 (FIFOTMS, 0x00);
1540 next_tick = HZ / 10;
1548 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1550 static inline void rtl8139_thread_iter (struct net_device *dev,
1551 struct rtl8139_private *tp,
1552 void __iomem *ioaddr)
1556 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1558 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1559 int duplex = (mii_lpa & LPA_100FULL)
1560 || (mii_lpa & 0x01C0) == 0x0040;
1561 if (tp->mii.full_duplex != duplex) {
1562 tp->mii.full_duplex = duplex;
1566 "%s: Setting %s-duplex based on MII #%d link"
1567 " partner ability of %4.4x.\n",
1569 tp->mii.full_duplex ? "full" : "half",
1570 tp->phys[0], mii_lpa);
1572 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1576 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1577 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1578 RTL_W8 (Cfg9346, Cfg9346_Lock);
1583 next_tick = HZ * 60;
1585 rtl8139_tune_twister (dev, tp);
1587 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1588 dev->name, RTL_R16 (NWayLPAR));
1589 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1590 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1591 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1592 dev->name, RTL_R8 (Config0),
1596 static int rtl8139_thread (void *data)
1598 struct net_device *dev = data;
1599 struct rtl8139_private *tp = netdev_priv(dev);
1600 unsigned long timeout;
1602 daemonize("%s", dev->name);
1603 allow_signal(SIGTERM);
1606 timeout = next_tick;
1608 timeout = interruptible_sleep_on_timeout (&tp->thr_wait, timeout);
1609 /* make swsusp happy with our thread */
1611 } while (!signal_pending (current) && (timeout > 0));
1613 if (signal_pending (current)) {
1614 flush_signals(current);
1617 if (tp->time_to_die)
1620 if (rtnl_lock_interruptible ())
1622 rtl8139_thread_iter (dev, tp, tp->mmio_addr);
1626 complete_and_exit (&tp->thr_exited, 0);
1629 static void rtl8139_start_thread(struct net_device *dev)
1631 struct rtl8139_private *tp = netdev_priv(dev);
1635 tp->time_to_die = 0;
1636 if (tp->chipset == CH_8139_K)
1638 else if (tp->drv_flags & HAS_LNK_CHNG)
1641 tp->thr_pid = kernel_thread(rtl8139_thread, dev, CLONE_FS|CLONE_FILES);
1642 if (tp->thr_pid < 0) {
1643 printk (KERN_WARNING "%s: unable to start kernel thread\n",
1648 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1653 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1657 static void rtl8139_tx_timeout (struct net_device *dev)
1659 struct rtl8139_private *tp = netdev_priv(dev);
1660 void __iomem *ioaddr = tp->mmio_addr;
1663 unsigned long flags;
1665 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1666 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1667 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1668 /* Emit info to figure out what went wrong. */
1669 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1670 dev->name, tp->cur_tx, tp->dirty_tx);
1671 for (i = 0; i < NUM_TX_DESC; i++)
1672 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1673 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1674 i == tp->dirty_tx % NUM_TX_DESC ?
1675 " (queue head)" : "");
1677 tp->xstats.tx_timeouts++;
1679 /* disable Tx ASAP, if not already */
1680 tmp8 = RTL_R8 (ChipCmd);
1681 if (tmp8 & CmdTxEnb)
1682 RTL_W8 (ChipCmd, CmdRxEnb);
1684 spin_lock(&tp->rx_lock);
1685 /* Disable interrupts by clearing the interrupt mask. */
1686 RTL_W16 (IntrMask, 0x0000);
1688 /* Stop a shared interrupt from scavenging while we are. */
1689 spin_lock_irqsave (&tp->lock, flags);
1690 rtl8139_tx_clear (tp);
1691 spin_unlock_irqrestore (&tp->lock, flags);
1693 /* ...and finally, reset everything */
1694 if (netif_running(dev)) {
1695 rtl8139_hw_start (dev);
1696 netif_wake_queue (dev);
1698 spin_unlock(&tp->rx_lock);
1702 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1704 struct rtl8139_private *tp = netdev_priv(dev);
1705 void __iomem *ioaddr = tp->mmio_addr;
1707 unsigned int len = skb->len;
1709 /* Calculate the next Tx descriptor entry. */
1710 entry = tp->cur_tx % NUM_TX_DESC;
1712 /* Note: the chip doesn't have auto-pad! */
1713 if (likely(len < TX_BUF_SIZE)) {
1715 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1716 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1720 tp->stats.tx_dropped++;
1724 spin_lock_irq(&tp->lock);
1725 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1726 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1728 dev->trans_start = jiffies;
1733 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1734 netif_stop_queue (dev);
1735 spin_unlock_irq(&tp->lock);
1737 if (netif_msg_tx_queued(tp))
1738 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1739 dev->name, len, entry);
1745 static void rtl8139_tx_interrupt (struct net_device *dev,
1746 struct rtl8139_private *tp,
1747 void __iomem *ioaddr)
1749 unsigned long dirty_tx, tx_left;
1751 assert (dev != NULL);
1752 assert (ioaddr != NULL);
1754 dirty_tx = tp->dirty_tx;
1755 tx_left = tp->cur_tx - dirty_tx;
1756 while (tx_left > 0) {
1757 int entry = dirty_tx % NUM_TX_DESC;
1760 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1762 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1763 break; /* It still hasn't been Txed */
1765 /* Note: TxCarrierLost is always asserted at 100mbps. */
1766 if (txstatus & (TxOutOfWindow | TxAborted)) {
1767 /* There was an major error, log it. */
1768 if (netif_msg_tx_err(tp))
1769 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1770 dev->name, txstatus);
1771 tp->stats.tx_errors++;
1772 if (txstatus & TxAborted) {
1773 tp->stats.tx_aborted_errors++;
1774 RTL_W32 (TxConfig, TxClearAbt);
1775 RTL_W16 (IntrStatus, TxErr);
1778 if (txstatus & TxCarrierLost)
1779 tp->stats.tx_carrier_errors++;
1780 if (txstatus & TxOutOfWindow)
1781 tp->stats.tx_window_errors++;
1783 if (txstatus & TxUnderrun) {
1784 /* Add 64 to the Tx FIFO threshold. */
1785 if (tp->tx_flag < 0x00300000)
1786 tp->tx_flag += 0x00020000;
1787 tp->stats.tx_fifo_errors++;
1789 tp->stats.collisions += (txstatus >> 24) & 15;
1790 tp->stats.tx_bytes += txstatus & 0x7ff;
1791 tp->stats.tx_packets++;
1798 #ifndef RTL8139_NDEBUG
1799 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1800 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1801 dev->name, dirty_tx, tp->cur_tx);
1802 dirty_tx += NUM_TX_DESC;
1804 #endif /* RTL8139_NDEBUG */
1806 /* only wake the queue if we did work, and the queue is stopped */
1807 if (tp->dirty_tx != dirty_tx) {
1808 tp->dirty_tx = dirty_tx;
1810 netif_wake_queue (dev);
1815 /* TODO: clean this up! Rx reset need not be this intensive */
1816 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1817 struct rtl8139_private *tp, void __iomem *ioaddr)
1820 #ifdef CONFIG_8139_OLD_RX_RESET
1824 if (netif_msg_rx_err (tp))
1825 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1826 dev->name, rx_status);
1827 tp->stats.rx_errors++;
1828 if (!(rx_status & RxStatusOK)) {
1829 if (rx_status & RxTooLong) {
1830 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1831 dev->name, rx_status);
1832 /* A.C.: The chip hangs here. */
1834 if (rx_status & (RxBadSymbol | RxBadAlign))
1835 tp->stats.rx_frame_errors++;
1836 if (rx_status & (RxRunt | RxTooLong))
1837 tp->stats.rx_length_errors++;
1838 if (rx_status & RxCRCErr)
1839 tp->stats.rx_crc_errors++;
1841 tp->xstats.rx_lost_in_ring++;
1844 #ifndef CONFIG_8139_OLD_RX_RESET
1845 tmp8 = RTL_R8 (ChipCmd);
1846 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1847 RTL_W8 (ChipCmd, tmp8);
1848 RTL_W32 (RxConfig, tp->rx_config);
1851 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1853 /* disable receive */
1854 RTL_W8_F (ChipCmd, CmdTxEnb);
1856 while (--tmp_work > 0) {
1858 tmp8 = RTL_R8 (ChipCmd);
1859 if (!(tmp8 & CmdRxEnb))
1863 printk (KERN_WARNING PFX "rx stop wait too long\n");
1864 /* restart receive */
1866 while (--tmp_work > 0) {
1867 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1869 tmp8 = RTL_R8 (ChipCmd);
1870 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1874 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1876 /* and reinitialize all rx related registers */
1877 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1878 /* Must enable Tx/Rx before setting transfer thresholds! */
1879 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1881 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1882 RTL_W32 (RxConfig, tp->rx_config);
1885 DPRINTK("init buffer addresses\n");
1887 /* Lock Config[01234] and BMCR register writes */
1888 RTL_W8 (Cfg9346, Cfg9346_Lock);
1890 /* init Rx ring buffer DMA address */
1891 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1893 /* A.C.: Reset the multicast list. */
1894 __set_rx_mode (dev);
1899 static __inline__ void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1900 u32 offset, unsigned int size)
1902 u32 left = RX_BUF_LEN - offset;
1905 memcpy(skb->data, ring + offset, left);
1906 memcpy(skb->data+left, ring, size - left);
1908 memcpy(skb->data, ring + offset, size);
1912 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1914 void __iomem *ioaddr = tp->mmio_addr;
1917 status = RTL_R16 (IntrStatus) & RxAckBits;
1919 /* Clear out errors and receive interrupts */
1920 if (likely(status != 0)) {
1921 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1922 tp->stats.rx_errors++;
1923 if (status & RxFIFOOver)
1924 tp->stats.rx_fifo_errors++;
1926 RTL_W16_F (IntrStatus, RxAckBits);
1930 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1933 void __iomem *ioaddr = tp->mmio_addr;
1935 unsigned char *rx_ring = tp->rx_ring;
1936 unsigned int cur_rx = tp->cur_rx;
1937 unsigned int rx_size = 0;
1939 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1940 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1941 RTL_R16 (RxBufAddr),
1942 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1944 while (netif_running(dev) && received < budget
1945 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1946 u32 ring_offset = cur_rx % RX_BUF_LEN;
1948 unsigned int pkt_size;
1949 struct sk_buff *skb;
1953 /* read size+status of next frame from DMA ring buffer */
1954 rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset));
1955 rx_size = rx_status >> 16;
1956 pkt_size = rx_size - 4;
1958 if (netif_msg_rx_status(tp))
1959 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1960 " cur %4.4x.\n", dev->name, rx_status,
1962 #if RTL8139_DEBUG > 2
1965 DPRINTK ("%s: Frame contents ", dev->name);
1966 for (i = 0; i < 70; i++)
1968 rx_ring[ring_offset + i]);
1973 /* Packet copy from FIFO still in progress.
1974 * Theoretically, this should never happen
1975 * since EarlyRx is disabled.
1977 if (unlikely(rx_size == 0xfff0)) {
1978 if (!tp->fifo_copy_timeout)
1979 tp->fifo_copy_timeout = jiffies + 2;
1980 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1981 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1985 if (netif_msg_intr(tp)) {
1986 printk(KERN_DEBUG "%s: fifo copy in progress.",
1989 tp->xstats.early_rx++;
1994 tp->fifo_copy_timeout = 0;
1996 /* If Rx err or invalid rx_size/rx_status received
1997 * (which happens if we get lost in the ring),
1998 * Rx process gets reset, so we abort any further
2001 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2003 (!(rx_status & RxStatusOK)))) {
2004 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2009 /* Malloc up new buffer, compatible with net-2e. */
2010 /* Omit the four octet CRC from the length. */
2012 skb = dev_alloc_skb (pkt_size + 2);
2015 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
2017 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2019 eth_copy_and_sum (skb, &rx_ring[ring_offset + 4], pkt_size, 0);
2021 skb_put (skb, pkt_size);
2023 skb->protocol = eth_type_trans (skb, dev);
2025 dev->last_rx = jiffies;
2026 tp->stats.rx_bytes += pkt_size;
2027 tp->stats.rx_packets++;
2029 netif_receive_skb (skb);
2031 if (net_ratelimit())
2032 printk (KERN_WARNING
2033 "%s: Memory squeeze, dropping packet.\n",
2035 tp->stats.rx_dropped++;
2039 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2040 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2042 rtl8139_isr_ack(tp);
2045 if (unlikely(!received || rx_size == 0xfff0))
2046 rtl8139_isr_ack(tp);
2048 #if RTL8139_DEBUG > 1
2049 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2050 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2051 RTL_R16 (RxBufAddr),
2052 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2055 tp->cur_rx = cur_rx;
2058 * The receive buffer should be mostly empty.
2059 * Tell NAPI to reenable the Rx irq.
2061 if (tp->fifo_copy_timeout)
2069 static void rtl8139_weird_interrupt (struct net_device *dev,
2070 struct rtl8139_private *tp,
2071 void __iomem *ioaddr,
2072 int status, int link_changed)
2074 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2077 assert (dev != NULL);
2078 assert (tp != NULL);
2079 assert (ioaddr != NULL);
2081 /* Update the error count. */
2082 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2083 RTL_W32 (RxMissed, 0);
2085 if ((status & RxUnderrun) && link_changed &&
2086 (tp->drv_flags & HAS_LNK_CHNG)) {
2087 rtl_check_media(dev, 0);
2088 status &= ~RxUnderrun;
2091 if (status & (RxUnderrun | RxErr))
2092 tp->stats.rx_errors++;
2094 if (status & PCSTimeout)
2095 tp->stats.rx_length_errors++;
2096 if (status & RxUnderrun)
2097 tp->stats.rx_fifo_errors++;
2098 if (status & PCIErr) {
2100 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2101 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2103 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2104 dev->name, pci_cmd_status);
2108 static int rtl8139_poll(struct net_device *dev, int *budget)
2110 struct rtl8139_private *tp = netdev_priv(dev);
2111 void __iomem *ioaddr = tp->mmio_addr;
2112 int orig_budget = min(*budget, dev->quota);
2115 spin_lock(&tp->rx_lock);
2116 if (likely(RTL_R16(IntrStatus) & RxAckBits)) {
2119 work_done = rtl8139_rx(dev, tp, orig_budget);
2120 if (likely(work_done > 0)) {
2121 *budget -= work_done;
2122 dev->quota -= work_done;
2123 done = (work_done < orig_budget);
2129 * Order is important since data can get interrupted
2130 * again when we think we are done.
2132 local_irq_disable();
2133 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2134 __netif_rx_complete(dev);
2137 spin_unlock(&tp->rx_lock);
2142 /* The interrupt handler does all of the Rx thread work and cleans up
2143 after the Tx thread. */
2144 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
2145 struct pt_regs *regs)
2147 struct net_device *dev = (struct net_device *) dev_instance;
2148 struct rtl8139_private *tp = netdev_priv(dev);
2149 void __iomem *ioaddr = tp->mmio_addr;
2150 u16 status, ackstat;
2151 int link_changed = 0; /* avoid bogus "uninit" warning */
2154 spin_lock (&tp->lock);
2155 status = RTL_R16 (IntrStatus);
2158 if (unlikely((status & rtl8139_intr_mask) == 0))
2163 /* h/w no longer present (hotplug?) or major error, bail */
2164 if (unlikely(status == 0xFFFF))
2167 /* close possible race's with dev_close */
2168 if (unlikely(!netif_running(dev))) {
2169 RTL_W16 (IntrMask, 0);
2173 /* Acknowledge all of the current interrupt sources ASAP, but
2174 an first get an additional status bit from CSCR. */
2175 if (unlikely(status & RxUnderrun))
2176 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2178 ackstat = status & ~(RxAckBits | TxErr);
2180 RTL_W16 (IntrStatus, ackstat);
2182 /* Receive packets are processed by poll routine.
2183 If not running start it now. */
2184 if (status & RxAckBits){
2185 if (netif_rx_schedule_prep(dev)) {
2186 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2187 __netif_rx_schedule (dev);
2191 /* Check uncommon events with one test. */
2192 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2193 rtl8139_weird_interrupt (dev, tp, ioaddr,
2194 status, link_changed);
2196 if (status & (TxOK | TxErr)) {
2197 rtl8139_tx_interrupt (dev, tp, ioaddr);
2199 RTL_W16 (IntrStatus, TxErr);
2202 spin_unlock (&tp->lock);
2204 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2205 dev->name, RTL_R16 (IntrStatus));
2206 return IRQ_RETVAL(handled);
2209 #ifdef CONFIG_NET_POLL_CONTROLLER
2211 * Polling receive - used by netconsole and other diagnostic tools
2212 * to allow network i/o with interrupts disabled.
2214 static void rtl8139_poll_controller(struct net_device *dev)
2216 disable_irq(dev->irq);
2217 rtl8139_interrupt(dev->irq, dev, NULL);
2218 enable_irq(dev->irq);
2222 static int rtl8139_close (struct net_device *dev)
2224 struct rtl8139_private *tp = netdev_priv(dev);
2225 void __iomem *ioaddr = tp->mmio_addr;
2227 unsigned long flags;
2229 netif_stop_queue (dev);
2231 if (tp->thr_pid >= 0) {
2232 tp->time_to_die = 1;
2234 ret = kill_proc (tp->thr_pid, SIGTERM, 1);
2236 printk (KERN_ERR "%s: unable to signal thread\n", dev->name);
2239 wait_for_completion (&tp->thr_exited);
2242 if (netif_msg_ifdown(tp))
2243 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2244 dev->name, RTL_R16 (IntrStatus));
2246 spin_lock_irqsave (&tp->lock, flags);
2248 /* Stop the chip's Tx and Rx DMA processes. */
2249 RTL_W8 (ChipCmd, 0);
2251 /* Disable interrupts by clearing the interrupt mask. */
2252 RTL_W16 (IntrMask, 0);
2254 /* Update the error counts. */
2255 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2256 RTL_W32 (RxMissed, 0);
2258 spin_unlock_irqrestore (&tp->lock, flags);
2260 synchronize_irq (dev->irq); /* racy, but that's ok here */
2261 free_irq (dev->irq, dev);
2263 rtl8139_tx_clear (tp);
2265 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
2266 tp->rx_ring, tp->rx_ring_dma);
2267 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
2268 tp->tx_bufs, tp->tx_bufs_dma);
2272 /* Green! Put the chip in low-power mode. */
2273 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2275 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2276 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2282 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2283 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2284 other threads or interrupts aren't messing with the 8139. */
2285 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2287 struct rtl8139_private *np = netdev_priv(dev);
2288 void __iomem *ioaddr = np->mmio_addr;
2290 spin_lock_irq(&np->lock);
2291 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2292 u8 cfg3 = RTL_R8 (Config3);
2293 u8 cfg5 = RTL_R8 (Config5);
2295 wol->supported = WAKE_PHY | WAKE_MAGIC
2296 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2299 if (cfg3 & Cfg3_LinkUp)
2300 wol->wolopts |= WAKE_PHY;
2301 if (cfg3 & Cfg3_Magic)
2302 wol->wolopts |= WAKE_MAGIC;
2303 /* (KON)FIXME: See how netdev_set_wol() handles the
2304 following constants. */
2305 if (cfg5 & Cfg5_UWF)
2306 wol->wolopts |= WAKE_UCAST;
2307 if (cfg5 & Cfg5_MWF)
2308 wol->wolopts |= WAKE_MCAST;
2309 if (cfg5 & Cfg5_BWF)
2310 wol->wolopts |= WAKE_BCAST;
2312 spin_unlock_irq(&np->lock);
2316 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2317 that wol points to kernel memory and other threads or interrupts
2318 aren't messing with the 8139. */
2319 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2321 struct rtl8139_private *np = netdev_priv(dev);
2322 void __iomem *ioaddr = np->mmio_addr;
2326 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2327 ? (WAKE_PHY | WAKE_MAGIC
2328 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2330 if (wol->wolopts & ~support)
2333 spin_lock_irq(&np->lock);
2334 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2335 if (wol->wolopts & WAKE_PHY)
2336 cfg3 |= Cfg3_LinkUp;
2337 if (wol->wolopts & WAKE_MAGIC)
2339 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2340 RTL_W8 (Config3, cfg3);
2341 RTL_W8 (Cfg9346, Cfg9346_Lock);
2343 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2344 /* (KON)FIXME: These are untested. We may have to set the
2345 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2347 if (wol->wolopts & WAKE_UCAST)
2349 if (wol->wolopts & WAKE_MCAST)
2351 if (wol->wolopts & WAKE_BCAST)
2353 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2354 spin_unlock_irq(&np->lock);
2359 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2361 struct rtl8139_private *np = netdev_priv(dev);
2362 strcpy(info->driver, DRV_NAME);
2363 strcpy(info->version, DRV_VERSION);
2364 strcpy(info->bus_info, pci_name(np->pci_dev));
2365 info->regdump_len = np->regs_len;
2368 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2370 struct rtl8139_private *np = netdev_priv(dev);
2371 spin_lock_irq(&np->lock);
2372 mii_ethtool_gset(&np->mii, cmd);
2373 spin_unlock_irq(&np->lock);
2377 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2379 struct rtl8139_private *np = netdev_priv(dev);
2381 spin_lock_irq(&np->lock);
2382 rc = mii_ethtool_sset(&np->mii, cmd);
2383 spin_unlock_irq(&np->lock);
2387 static int rtl8139_nway_reset(struct net_device *dev)
2389 struct rtl8139_private *np = netdev_priv(dev);
2390 return mii_nway_restart(&np->mii);
2393 static u32 rtl8139_get_link(struct net_device *dev)
2395 struct rtl8139_private *np = netdev_priv(dev);
2396 return mii_link_ok(&np->mii);
2399 static u32 rtl8139_get_msglevel(struct net_device *dev)
2401 struct rtl8139_private *np = netdev_priv(dev);
2402 return np->msg_enable;
2405 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2407 struct rtl8139_private *np = netdev_priv(dev);
2408 np->msg_enable = datum;
2411 /* TODO: we are too slack to do reg dumping for pio, for now */
2412 #ifdef CONFIG_8139TOO_PIO
2413 #define rtl8139_get_regs_len NULL
2414 #define rtl8139_get_regs NULL
2416 static int rtl8139_get_regs_len(struct net_device *dev)
2418 struct rtl8139_private *np = netdev_priv(dev);
2419 return np->regs_len;
2422 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2424 struct rtl8139_private *np = netdev_priv(dev);
2426 regs->version = RTL_REGS_VER;
2428 spin_lock_irq(&np->lock);
2429 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2430 spin_unlock_irq(&np->lock);
2432 #endif /* CONFIG_8139TOO_MMIO */
2434 static int rtl8139_get_stats_count(struct net_device *dev)
2436 return RTL_NUM_STATS;
2439 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2441 struct rtl8139_private *np = netdev_priv(dev);
2443 data[0] = np->xstats.early_rx;
2444 data[1] = np->xstats.tx_buf_mapped;
2445 data[2] = np->xstats.tx_timeouts;
2446 data[3] = np->xstats.rx_lost_in_ring;
2449 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2451 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2454 static struct ethtool_ops rtl8139_ethtool_ops = {
2455 .get_drvinfo = rtl8139_get_drvinfo,
2456 .get_settings = rtl8139_get_settings,
2457 .set_settings = rtl8139_set_settings,
2458 .get_regs_len = rtl8139_get_regs_len,
2459 .get_regs = rtl8139_get_regs,
2460 .nway_reset = rtl8139_nway_reset,
2461 .get_link = rtl8139_get_link,
2462 .get_msglevel = rtl8139_get_msglevel,
2463 .set_msglevel = rtl8139_set_msglevel,
2464 .get_wol = rtl8139_get_wol,
2465 .set_wol = rtl8139_set_wol,
2466 .get_strings = rtl8139_get_strings,
2467 .get_stats_count = rtl8139_get_stats_count,
2468 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2469 .get_perm_addr = ethtool_op_get_perm_addr,
2472 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2474 struct rtl8139_private *np = netdev_priv(dev);
2477 if (!netif_running(dev))
2480 spin_lock_irq(&np->lock);
2481 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2482 spin_unlock_irq(&np->lock);
2488 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2490 struct rtl8139_private *tp = netdev_priv(dev);
2491 void __iomem *ioaddr = tp->mmio_addr;
2492 unsigned long flags;
2494 if (netif_running(dev)) {
2495 spin_lock_irqsave (&tp->lock, flags);
2496 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2497 RTL_W32 (RxMissed, 0);
2498 spin_unlock_irqrestore (&tp->lock, flags);
2504 /* Set or clear the multicast filter for this adaptor.
2505 This routine is not state sensitive and need not be SMP locked. */
2507 static void __set_rx_mode (struct net_device *dev)
2509 struct rtl8139_private *tp = netdev_priv(dev);
2510 void __iomem *ioaddr = tp->mmio_addr;
2511 u32 mc_filter[2]; /* Multicast hash filter */
2515 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2516 dev->name, dev->flags, RTL_R32 (RxConfig));
2518 /* Note: do not reorder, GCC is clever about common statements. */
2519 if (dev->flags & IFF_PROMISC) {
2520 /* Unconditionally log net taps. */
2521 printk (KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2524 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2526 mc_filter[1] = mc_filter[0] = 0xffffffff;
2527 } else if ((dev->mc_count > multicast_filter_limit)
2528 || (dev->flags & IFF_ALLMULTI)) {
2529 /* Too many to filter perfectly -- accept all multicasts. */
2530 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2531 mc_filter[1] = mc_filter[0] = 0xffffffff;
2533 struct dev_mc_list *mclist;
2534 rx_mode = AcceptBroadcast | AcceptMyPhys;
2535 mc_filter[1] = mc_filter[0] = 0;
2536 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2537 i++, mclist = mclist->next) {
2538 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2540 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2541 rx_mode |= AcceptMulticast;
2545 /* We can safely update without stopping the chip. */
2546 tmp = rtl8139_rx_config | rx_mode;
2547 if (tp->rx_config != tmp) {
2548 RTL_W32_F (RxConfig, tmp);
2549 tp->rx_config = tmp;
2551 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2552 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2555 static void rtl8139_set_rx_mode (struct net_device *dev)
2557 unsigned long flags;
2558 struct rtl8139_private *tp = netdev_priv(dev);
2560 spin_lock_irqsave (&tp->lock, flags);
2562 spin_unlock_irqrestore (&tp->lock, flags);
2567 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2569 struct net_device *dev = pci_get_drvdata (pdev);
2570 struct rtl8139_private *tp = netdev_priv(dev);
2571 void __iomem *ioaddr = tp->mmio_addr;
2572 unsigned long flags;
2574 pci_save_state (pdev);
2576 if (!netif_running (dev))
2579 netif_device_detach (dev);
2581 spin_lock_irqsave (&tp->lock, flags);
2583 /* Disable interrupts, stop Tx and Rx. */
2584 RTL_W16 (IntrMask, 0);
2585 RTL_W8 (ChipCmd, 0);
2587 /* Update the error counts. */
2588 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2589 RTL_W32 (RxMissed, 0);
2591 spin_unlock_irqrestore (&tp->lock, flags);
2593 pci_set_power_state (pdev, PCI_D3hot);
2599 static int rtl8139_resume (struct pci_dev *pdev)
2601 struct net_device *dev = pci_get_drvdata (pdev);
2603 pci_restore_state (pdev);
2604 if (!netif_running (dev))
2606 pci_set_power_state (pdev, PCI_D0);
2607 rtl8139_init_ring (dev);
2608 rtl8139_hw_start (dev);
2609 netif_device_attach (dev);
2613 #endif /* CONFIG_PM */
2616 static struct pci_driver rtl8139_pci_driver = {
2618 .id_table = rtl8139_pci_tbl,
2619 .probe = rtl8139_init_one,
2620 .remove = __devexit_p(rtl8139_remove_one),
2622 .suspend = rtl8139_suspend,
2623 .resume = rtl8139_resume,
2624 #endif /* CONFIG_PM */
2628 static int __init rtl8139_init_module (void)
2630 /* when we're a module, we always print a version message,
2631 * even if no 8139 board is found.
2634 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2637 return pci_module_init (&rtl8139_pci_driver);
2641 static void __exit rtl8139_cleanup_module (void)
2643 pci_unregister_driver (&rtl8139_pci_driver);
2647 module_init(rtl8139_init_module);
2648 module_exit(rtl8139_cleanup_module);