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/netdevice.h>
102 #include <linux/etherdevice.h>
103 #include <linux/rtnetlink.h>
104 #include <linux/delay.h>
105 #include <linux/ethtool.h>
106 #include <linux/mii.h>
107 #include <linux/completion.h>
108 #include <linux/crc32.h>
109 #include <linux/io.h>
110 #include <linux/uaccess.h>
113 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
114 #define PFX DRV_NAME ": "
116 /* Default Message level */
117 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
122 /* define to 1, 2 or 3 to enable copious debugging info */
123 #define RTL8139_DEBUG 0
125 /* define to 1 to disable lightweight runtime debugging checks */
126 #undef RTL8139_NDEBUG
130 /* note: prints function name for you */
131 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
133 # define DPRINTK(fmt, args...)
136 #ifdef RTL8139_NDEBUG
137 # define assert(expr) do {} while (0)
139 # define assert(expr) \
140 if(unlikely(!(expr))) { \
141 printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
142 #expr, __FILE__, __func__, __LINE__); \
147 /* A few user-configurable values. */
150 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
151 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
153 /* Whether to use MMIO or PIO. Default to MMIO. */
154 #ifdef CONFIG_8139TOO_PIO
155 static int use_io = 1;
157 static int use_io = 0;
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 0 /* 8K 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 */
232 static const struct {
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 FlashReg = 0xD4, /* Communication with Flash ROM, four bytes. */
329 PARA7c = 0x7c, /* Magic transceiver parameter register. */
330 Config5 = 0xD8, /* absent on RTL-8139A */
334 MultiIntrClear = 0xF000,
336 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
346 /* Interrupt register bits, using my own meaningful names. */
347 enum IntrStatusBits {
358 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
365 TxOutOfWindow = 0x20000000,
366 TxAborted = 0x40000000,
367 TxCarrierLost = 0x80000000,
370 RxMulticast = 0x8000,
372 RxBroadcast = 0x2000,
373 RxBadSymbol = 0x0020,
381 /* Bits in RxConfig. */
385 AcceptBroadcast = 0x08,
386 AcceptMulticast = 0x04,
388 AcceptAllPhys = 0x01,
391 /* Bits in TxConfig. */
392 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 Tx pkt CRC append */
402 TxClearAbt = (1 << 0), /* Clear abort (WO) */
403 TxDMAShift = 8, /* DMA burst value (0-7) is shifted X many bits */
404 TxRetryShift = 4, /* TXRR value (0-15) is shifted X 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 static const 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),
555 HasHltClk /* XXX undocumented? */
560 HW_REVID(1, 1, 1, 0, 1, 1, 1),
565 struct rtl_extra_stats {
566 unsigned long early_rx;
567 unsigned long tx_buf_mapped;
568 unsigned long tx_timeouts;
569 unsigned long rx_lost_in_ring;
572 struct rtl8139_private {
573 void __iomem *mmio_addr;
575 struct pci_dev *pci_dev;
577 struct napi_struct napi;
578 struct net_device *dev;
580 unsigned char *rx_ring;
581 unsigned int cur_rx; /* RX buf index of next pkt */
582 dma_addr_t rx_ring_dma;
584 unsigned int tx_flag;
585 unsigned long cur_tx;
586 unsigned long dirty_tx;
587 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
588 unsigned char *tx_bufs; /* Tx bounce buffer region. */
589 dma_addr_t tx_bufs_dma;
591 signed char phys[4]; /* MII device addresses. */
593 /* Twister tune state. */
594 char twistie, twist_row, twist_col;
596 unsigned int watchdog_fired : 1;
597 unsigned int default_port : 4; /* Last dev->if_port value. */
598 unsigned int have_thread : 1;
605 struct rtl_extra_stats xstats;
607 struct delayed_work thread;
609 struct mii_if_info mii;
610 unsigned int regs_len;
611 unsigned long fifo_copy_timeout;
614 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
615 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
616 MODULE_LICENSE("GPL");
617 MODULE_VERSION(DRV_VERSION);
619 module_param(use_io, int, 0);
620 MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO");
621 module_param(multicast_filter_limit, int, 0);
622 module_param_array(media, int, NULL, 0);
623 module_param_array(full_duplex, int, NULL, 0);
624 module_param(debug, int, 0);
625 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
626 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
627 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
628 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
630 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
631 static int rtl8139_open (struct net_device *dev);
632 static int mdio_read (struct net_device *dev, int phy_id, int location);
633 static void mdio_write (struct net_device *dev, int phy_id, int location,
635 static void rtl8139_start_thread(struct rtl8139_private *tp);
636 static void rtl8139_tx_timeout (struct net_device *dev);
637 static void rtl8139_init_ring (struct net_device *dev);
638 static int rtl8139_start_xmit (struct sk_buff *skb,
639 struct net_device *dev);
640 #ifdef CONFIG_NET_POLL_CONTROLLER
641 static void rtl8139_poll_controller(struct net_device *dev);
643 static int rtl8139_poll(struct napi_struct *napi, int budget);
644 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance);
645 static int rtl8139_close (struct net_device *dev);
646 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
647 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
648 static void rtl8139_set_rx_mode (struct net_device *dev);
649 static void __set_rx_mode (struct net_device *dev);
650 static void rtl8139_hw_start (struct net_device *dev);
651 static void rtl8139_thread (struct work_struct *work);
652 static void rtl8139_tx_timeout_task(struct work_struct *work);
653 static const struct ethtool_ops rtl8139_ethtool_ops;
655 /* write MMIO register, with flush */
656 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
657 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
658 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
659 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
661 /* write MMIO register */
662 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
663 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
664 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
666 /* read MMIO register */
667 #define RTL_R8(reg) ioread8 (ioaddr + (reg))
668 #define RTL_R16(reg) ioread16 (ioaddr + (reg))
669 #define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
672 static const u16 rtl8139_intr_mask =
673 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
674 TxErr | TxOK | RxErr | RxOK;
676 static const u16 rtl8139_norx_intr_mask =
677 PCIErr | PCSTimeout | RxUnderrun |
678 TxErr | TxOK | RxErr ;
681 static const unsigned int rtl8139_rx_config =
682 RxCfgRcv8K | RxNoWrap |
683 (RX_FIFO_THRESH << RxCfgFIFOShift) |
684 (RX_DMA_BURST << RxCfgDMAShift);
685 #elif RX_BUF_IDX == 1
686 static const unsigned int rtl8139_rx_config =
687 RxCfgRcv16K | RxNoWrap |
688 (RX_FIFO_THRESH << RxCfgFIFOShift) |
689 (RX_DMA_BURST << RxCfgDMAShift);
690 #elif RX_BUF_IDX == 2
691 static const unsigned int rtl8139_rx_config =
692 RxCfgRcv32K | RxNoWrap |
693 (RX_FIFO_THRESH << RxCfgFIFOShift) |
694 (RX_DMA_BURST << RxCfgDMAShift);
695 #elif RX_BUF_IDX == 3
696 static const unsigned int rtl8139_rx_config =
698 (RX_FIFO_THRESH << RxCfgFIFOShift) |
699 (RX_DMA_BURST << RxCfgDMAShift);
701 #error "Invalid configuration for 8139_RXBUF_IDX"
704 static const unsigned int rtl8139_tx_config =
705 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
707 static void __rtl8139_cleanup_dev (struct net_device *dev)
709 struct rtl8139_private *tp = netdev_priv(dev);
710 struct pci_dev *pdev;
712 assert (dev != NULL);
713 assert (tp->pci_dev != NULL);
717 pci_iounmap (pdev, tp->mmio_addr);
719 /* it's ok to call this even if we have no regions to free */
720 pci_release_regions (pdev);
723 pci_set_drvdata (pdev, NULL);
727 static void rtl8139_chip_reset (void __iomem *ioaddr)
731 /* Soft reset the chip. */
732 RTL_W8 (ChipCmd, CmdReset);
734 /* Check that the chip has finished the reset. */
735 for (i = 1000; i > 0; i--) {
737 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
744 static int __devinit rtl8139_init_board (struct pci_dev *pdev,
745 struct net_device **dev_out)
747 void __iomem *ioaddr;
748 struct net_device *dev;
749 struct rtl8139_private *tp;
751 int rc, disable_dev_on_err = 0;
753 unsigned long pio_start, pio_end, pio_flags, pio_len;
754 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
757 assert (pdev != NULL);
761 /* dev and priv zeroed in alloc_etherdev */
762 dev = alloc_etherdev (sizeof (*tp));
764 dev_err(&pdev->dev, "Unable to alloc new net device\n");
767 SET_NETDEV_DEV(dev, &pdev->dev);
769 tp = netdev_priv(dev);
772 /* enable device (incl. PCI PM wakeup and hotplug setup) */
773 rc = pci_enable_device (pdev);
777 pio_start = pci_resource_start (pdev, 0);
778 pio_end = pci_resource_end (pdev, 0);
779 pio_flags = pci_resource_flags (pdev, 0);
780 pio_len = pci_resource_len (pdev, 0);
782 mmio_start = pci_resource_start (pdev, 1);
783 mmio_end = pci_resource_end (pdev, 1);
784 mmio_flags = pci_resource_flags (pdev, 1);
785 mmio_len = pci_resource_len (pdev, 1);
787 /* set this immediately, we need to know before
788 * we talk to the chip directly */
789 DPRINTK("PIO region size == 0x%02X\n", pio_len);
790 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
794 /* make sure PCI base addr 0 is PIO */
795 if (!(pio_flags & IORESOURCE_IO)) {
796 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
800 /* check for weird/broken PCI region reporting */
801 if (pio_len < RTL_MIN_IO_SIZE) {
802 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
807 /* make sure PCI base addr 1 is MMIO */
808 if (!(mmio_flags & IORESOURCE_MEM)) {
809 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
813 if (mmio_len < RTL_MIN_IO_SIZE) {
814 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
820 rc = pci_request_regions (pdev, DRV_NAME);
823 disable_dev_on_err = 1;
825 /* enable PCI bus-mastering */
826 pci_set_master (pdev);
829 ioaddr = pci_iomap(pdev, 0, 0);
831 dev_err(&pdev->dev, "cannot map PIO, aborting\n");
835 dev->base_addr = pio_start;
836 tp->regs_len = pio_len;
838 /* ioremap MMIO region */
839 ioaddr = pci_iomap(pdev, 1, 0);
840 if (ioaddr == NULL) {
841 dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n");
842 pci_release_regions(pdev);
846 dev->base_addr = (long) ioaddr;
847 tp->regs_len = mmio_len;
849 tp->mmio_addr = ioaddr;
851 /* Bring old chips out of low-power mode. */
852 RTL_W8 (HltClk, 'R');
854 /* check for missing/broken hardware */
855 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
856 dev_err(&pdev->dev, "Chip not responding, ignoring board\n");
861 /* identify chip attached to board */
862 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
863 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
864 if (version == rtl_chip_info[i].version) {
869 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
870 dev_printk (KERN_DEBUG, &pdev->dev,
871 "unknown chip version, assuming RTL-8139\n");
872 dev_printk (KERN_DEBUG, &pdev->dev,
873 "TxConfig = 0x%lx\n", RTL_R32 (TxConfig));
877 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
878 version, i, rtl_chip_info[i].name);
880 if (tp->chipset >= CH_8139B) {
881 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
882 DPRINTK("PCI PM wakeup\n");
883 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
886 new_tmp8 |= Cfg1_PM_Enable;
887 if (new_tmp8 != tmp8) {
888 RTL_W8 (Cfg9346, Cfg9346_Unlock);
889 RTL_W8 (Config1, tmp8);
890 RTL_W8 (Cfg9346, Cfg9346_Lock);
892 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
893 tmp8 = RTL_R8 (Config4);
895 RTL_W8 (Cfg9346, Cfg9346_Unlock);
896 RTL_W8 (Config4, tmp8 & ~LWPTN);
897 RTL_W8 (Cfg9346, Cfg9346_Lock);
901 DPRINTK("Old chip wakeup\n");
902 tmp8 = RTL_R8 (Config1);
903 tmp8 &= ~(SLEEP | PWRDN);
904 RTL_W8 (Config1, tmp8);
907 rtl8139_chip_reset (ioaddr);
913 __rtl8139_cleanup_dev (dev);
914 if (disable_dev_on_err)
915 pci_disable_device (pdev);
920 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
921 const struct pci_device_id *ent)
923 struct net_device *dev = NULL;
924 struct rtl8139_private *tp;
925 int i, addr_len, option;
926 void __iomem *ioaddr;
927 static int board_idx = -1;
928 DECLARE_MAC_BUF(mac);
930 assert (pdev != NULL);
931 assert (ent != NULL);
935 /* when we're built into the kernel, the driver version message
936 * is only printed if at least one 8139 board has been found
940 static int printed_version;
941 if (!printed_version++)
942 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
946 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
947 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
949 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
950 pdev->vendor, pdev->device, pdev->revision);
952 "Use the \"8139cp\" driver for improved performance and stability.\n");
955 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
956 pdev->device == PCI_DEVICE_ID_REALTEK_8139 &&
957 pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS &&
958 pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) {
959 printk(KERN_INFO "8139too: OQO Model 2 detected. Forcing PIO\n");
963 i = rtl8139_init_board (pdev, &dev);
967 assert (dev != NULL);
968 tp = netdev_priv(dev);
971 ioaddr = tp->mmio_addr;
972 assert (ioaddr != NULL);
974 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
975 for (i = 0; i < 3; i++)
976 ((__le16 *) (dev->dev_addr))[i] =
977 cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len));
978 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
980 /* The Rtl8139-specific entries in the device structure. */
981 dev->open = rtl8139_open;
982 dev->hard_start_xmit = rtl8139_start_xmit;
983 netif_napi_add(dev, &tp->napi, rtl8139_poll, 64);
984 dev->stop = rtl8139_close;
985 dev->get_stats = rtl8139_get_stats;
986 dev->set_multicast_list = rtl8139_set_rx_mode;
987 dev->do_ioctl = netdev_ioctl;
988 dev->ethtool_ops = &rtl8139_ethtool_ops;
989 dev->tx_timeout = rtl8139_tx_timeout;
990 dev->watchdog_timeo = TX_TIMEOUT;
991 #ifdef CONFIG_NET_POLL_CONTROLLER
992 dev->poll_controller = rtl8139_poll_controller;
995 /* note: the hardware is not capable of sg/csum/highdma, however
996 * through the use of skb_copy_and_csum_dev we enable these
999 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
1001 dev->irq = pdev->irq;
1003 /* tp zeroed and aligned in alloc_etherdev */
1004 tp = netdev_priv(dev);
1006 /* note: tp->chipset set in rtl8139_init_board */
1007 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1008 tp->mmio_addr = ioaddr;
1010 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1011 spin_lock_init (&tp->lock);
1012 spin_lock_init (&tp->rx_lock);
1013 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1015 tp->mii.mdio_read = mdio_read;
1016 tp->mii.mdio_write = mdio_write;
1017 tp->mii.phy_id_mask = 0x3f;
1018 tp->mii.reg_num_mask = 0x1f;
1020 /* dev is fully set up and ready to use now */
1021 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1022 i = register_netdev (dev);
1023 if (i) goto err_out;
1025 pci_set_drvdata (pdev, dev);
1027 printk (KERN_INFO "%s: %s at 0x%lx, "
1030 board_info[ent->driver_data].name,
1032 print_mac(mac, dev->dev_addr),
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 = dma_alloc_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1318 &tp->tx_bufs_dma, GFP_KERNEL);
1319 tp->rx_ring = dma_alloc_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1320 &tp->rx_ring_dma, GFP_KERNEL);
1321 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1322 free_irq(dev->irq, dev);
1325 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1326 tp->tx_bufs, tp->tx_bufs_dma);
1328 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1329 tp->rx_ring, tp->rx_ring_dma);
1335 napi_enable(&tp->napi);
1337 tp->mii.full_duplex = tp->mii.force_media;
1338 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1340 rtl8139_init_ring (dev);
1341 rtl8139_hw_start (dev);
1342 netif_start_queue (dev);
1344 if (netif_msg_ifup(tp))
1345 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#llx IRQ %d"
1346 " GP Pins %2.2x %s-duplex.\n", dev->name,
1347 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1348 dev->irq, RTL_R8 (MediaStatus),
1349 tp->mii.full_duplex ? "full" : "half");
1351 rtl8139_start_thread(tp);
1357 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1359 struct rtl8139_private *tp = netdev_priv(dev);
1361 if (tp->phys[0] >= 0) {
1362 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1366 /* Start the hardware at open or resume. */
1367 static void rtl8139_hw_start (struct net_device *dev)
1369 struct rtl8139_private *tp = netdev_priv(dev);
1370 void __iomem *ioaddr = tp->mmio_addr;
1374 /* Bring old chips out of low-power mode. */
1375 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1376 RTL_W8 (HltClk, 'R');
1378 rtl8139_chip_reset (ioaddr);
1380 /* unlock Config[01234] and BMCR register writes */
1381 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1382 /* Restore our idea of the MAC address. */
1383 RTL_W32_F (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
1384 RTL_W32_F (MAC0 + 4, le16_to_cpu (*(__le16 *) (dev->dev_addr + 4)));
1386 /* Must enable Tx/Rx before setting transfer thresholds! */
1387 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1389 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1390 RTL_W32 (RxConfig, tp->rx_config);
1391 RTL_W32 (TxConfig, rtl8139_tx_config);
1395 rtl_check_media (dev, 1);
1397 if (tp->chipset >= CH_8139B) {
1398 /* Disable magic packet scanning, which is enabled
1399 * when PM is enabled in Config1. It can be reenabled
1400 * via ETHTOOL_SWOL if desired. */
1401 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1404 DPRINTK("init buffer addresses\n");
1406 /* Lock Config[01234] and BMCR register writes */
1407 RTL_W8 (Cfg9346, Cfg9346_Lock);
1409 /* init Rx ring buffer DMA address */
1410 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1412 /* init Tx buffer DMA addresses */
1413 for (i = 0; i < NUM_TX_DESC; i++)
1414 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1416 RTL_W32 (RxMissed, 0);
1418 rtl8139_set_rx_mode (dev);
1420 /* no early-rx interrupts */
1421 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1423 /* make sure RxTx has started */
1424 tmp = RTL_R8 (ChipCmd);
1425 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1426 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1428 /* Enable all known interrupts by setting the interrupt mask. */
1429 RTL_W16 (IntrMask, rtl8139_intr_mask);
1433 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1434 static void rtl8139_init_ring (struct net_device *dev)
1436 struct rtl8139_private *tp = netdev_priv(dev);
1443 for (i = 0; i < NUM_TX_DESC; i++)
1444 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1448 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1449 static int next_tick = 3 * HZ;
1451 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1452 static inline void rtl8139_tune_twister (struct net_device *dev,
1453 struct rtl8139_private *tp) {}
1455 enum TwisterParamVals {
1456 PARA78_default = 0x78fa8388,
1457 PARA7c_default = 0xcb38de43, /* param[0][3] */
1458 PARA7c_xxx = 0xcb38de43,
1461 static const unsigned long param[4][4] = {
1462 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1463 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1464 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1465 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1468 static void rtl8139_tune_twister (struct net_device *dev,
1469 struct rtl8139_private *tp)
1472 void __iomem *ioaddr = tp->mmio_addr;
1474 /* This is a complicated state machine to configure the "twister" for
1475 impedance/echos based on the cable length.
1476 All of this is magic and undocumented.
1478 switch (tp->twistie) {
1480 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1481 /* We have link beat, let us tune the twister. */
1482 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1483 tp->twistie = 2; /* Change to state 2. */
1484 next_tick = HZ / 10;
1486 /* Just put in some reasonable defaults for when beat returns. */
1487 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1488 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1489 RTL_W32 (PARA78, PARA78_default);
1490 RTL_W32 (PARA7c, PARA7c_default);
1491 tp->twistie = 0; /* Bail from future actions. */
1495 /* Read how long it took to hear the echo. */
1496 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1497 if (linkcase == 0x7000)
1499 else if (linkcase == 0x3000)
1501 else if (linkcase == 0x1000)
1506 tp->twistie = 3; /* Change to state 2. */
1507 next_tick = HZ / 10;
1510 /* Put out four tuning parameters, one per 100msec. */
1511 if (tp->twist_col == 0)
1512 RTL_W16 (FIFOTMS, 0);
1513 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1514 [(int) tp->twist_col]);
1515 next_tick = HZ / 10;
1516 if (++tp->twist_col >= 4) {
1517 /* For short cables we are done.
1518 For long cables (row == 3) check for mistune. */
1520 (tp->twist_row == 3) ? 4 : 0;
1524 /* Special case for long cables: check for mistune. */
1525 if ((RTL_R16 (CSCR) &
1526 CSCR_LinkStatusBits) == 0x7000) {
1530 RTL_W32 (PARA7c, 0xfb38de03);
1532 next_tick = HZ / 10;
1536 /* Retune for shorter cable (column 2). */
1537 RTL_W32 (FIFOTMS, 0x20);
1538 RTL_W32 (PARA78, PARA78_default);
1539 RTL_W32 (PARA7c, PARA7c_default);
1540 RTL_W32 (FIFOTMS, 0x00);
1544 next_tick = HZ / 10;
1552 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1554 static inline void rtl8139_thread_iter (struct net_device *dev,
1555 struct rtl8139_private *tp,
1556 void __iomem *ioaddr)
1560 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1562 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1563 int duplex = (mii_lpa & LPA_100FULL)
1564 || (mii_lpa & 0x01C0) == 0x0040;
1565 if (tp->mii.full_duplex != duplex) {
1566 tp->mii.full_duplex = duplex;
1570 "%s: Setting %s-duplex based on MII #%d link"
1571 " partner ability of %4.4x.\n",
1573 tp->mii.full_duplex ? "full" : "half",
1574 tp->phys[0], mii_lpa);
1576 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1580 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1581 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1582 RTL_W8 (Cfg9346, Cfg9346_Lock);
1587 next_tick = HZ * 60;
1589 rtl8139_tune_twister (dev, tp);
1591 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1592 dev->name, RTL_R16 (NWayLPAR));
1593 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1594 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1595 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1596 dev->name, RTL_R8 (Config0),
1600 static void rtl8139_thread (struct work_struct *work)
1602 struct rtl8139_private *tp =
1603 container_of(work, struct rtl8139_private, thread.work);
1604 struct net_device *dev = tp->mii.dev;
1605 unsigned long thr_delay = next_tick;
1609 if (!netif_running(dev))
1612 if (tp->watchdog_fired) {
1613 tp->watchdog_fired = 0;
1614 rtl8139_tx_timeout_task(work);
1616 rtl8139_thread_iter(dev, tp, tp->mmio_addr);
1618 if (tp->have_thread)
1619 schedule_delayed_work(&tp->thread, thr_delay);
1624 static void rtl8139_start_thread(struct rtl8139_private *tp)
1627 if (tp->chipset == CH_8139_K)
1629 else if (tp->drv_flags & HAS_LNK_CHNG)
1632 tp->have_thread = 1;
1633 tp->watchdog_fired = 0;
1635 schedule_delayed_work(&tp->thread, next_tick);
1638 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1643 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1646 static void rtl8139_tx_timeout_task (struct work_struct *work)
1648 struct rtl8139_private *tp =
1649 container_of(work, struct rtl8139_private, thread.work);
1650 struct net_device *dev = tp->mii.dev;
1651 void __iomem *ioaddr = tp->mmio_addr;
1655 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1656 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1657 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1658 /* Emit info to figure out what went wrong. */
1659 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1660 dev->name, tp->cur_tx, tp->dirty_tx);
1661 for (i = 0; i < NUM_TX_DESC; i++)
1662 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1663 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1664 i == tp->dirty_tx % NUM_TX_DESC ?
1665 " (queue head)" : "");
1667 tp->xstats.tx_timeouts++;
1669 /* disable Tx ASAP, if not already */
1670 tmp8 = RTL_R8 (ChipCmd);
1671 if (tmp8 & CmdTxEnb)
1672 RTL_W8 (ChipCmd, CmdRxEnb);
1674 spin_lock_bh(&tp->rx_lock);
1675 /* Disable interrupts by clearing the interrupt mask. */
1676 RTL_W16 (IntrMask, 0x0000);
1678 /* Stop a shared interrupt from scavenging while we are. */
1679 spin_lock_irq(&tp->lock);
1680 rtl8139_tx_clear (tp);
1681 spin_unlock_irq(&tp->lock);
1683 /* ...and finally, reset everything */
1684 if (netif_running(dev)) {
1685 rtl8139_hw_start (dev);
1686 netif_wake_queue (dev);
1688 spin_unlock_bh(&tp->rx_lock);
1691 static void rtl8139_tx_timeout (struct net_device *dev)
1693 struct rtl8139_private *tp = netdev_priv(dev);
1695 tp->watchdog_fired = 1;
1696 if (!tp->have_thread) {
1697 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1698 schedule_delayed_work(&tp->thread, next_tick);
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;
1708 unsigned long flags;
1710 /* Calculate the next Tx descriptor entry. */
1711 entry = tp->cur_tx % NUM_TX_DESC;
1713 /* Note: the chip doesn't have auto-pad! */
1714 if (likely(len < TX_BUF_SIZE)) {
1716 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1717 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1721 dev->stats.tx_dropped++;
1725 spin_lock_irqsave(&tp->lock, flags);
1726 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1727 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1729 dev->trans_start = jiffies;
1734 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1735 netif_stop_queue (dev);
1736 spin_unlock_irqrestore(&tp->lock, flags);
1738 if (netif_msg_tx_queued(tp))
1739 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1740 dev->name, len, entry);
1746 static void rtl8139_tx_interrupt (struct net_device *dev,
1747 struct rtl8139_private *tp,
1748 void __iomem *ioaddr)
1750 unsigned long dirty_tx, tx_left;
1752 assert (dev != NULL);
1753 assert (ioaddr != NULL);
1755 dirty_tx = tp->dirty_tx;
1756 tx_left = tp->cur_tx - dirty_tx;
1757 while (tx_left > 0) {
1758 int entry = dirty_tx % NUM_TX_DESC;
1761 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1763 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1764 break; /* It still hasn't been Txed */
1766 /* Note: TxCarrierLost is always asserted at 100mbps. */
1767 if (txstatus & (TxOutOfWindow | TxAborted)) {
1768 /* There was an major error, log it. */
1769 if (netif_msg_tx_err(tp))
1770 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1771 dev->name, txstatus);
1772 dev->stats.tx_errors++;
1773 if (txstatus & TxAborted) {
1774 dev->stats.tx_aborted_errors++;
1775 RTL_W32 (TxConfig, TxClearAbt);
1776 RTL_W16 (IntrStatus, TxErr);
1779 if (txstatus & TxCarrierLost)
1780 dev->stats.tx_carrier_errors++;
1781 if (txstatus & TxOutOfWindow)
1782 dev->stats.tx_window_errors++;
1784 if (txstatus & TxUnderrun) {
1785 /* Add 64 to the Tx FIFO threshold. */
1786 if (tp->tx_flag < 0x00300000)
1787 tp->tx_flag += 0x00020000;
1788 dev->stats.tx_fifo_errors++;
1790 dev->stats.collisions += (txstatus >> 24) & 15;
1791 dev->stats.tx_bytes += txstatus & 0x7ff;
1792 dev->stats.tx_packets++;
1799 #ifndef RTL8139_NDEBUG
1800 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1801 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1802 dev->name, dirty_tx, tp->cur_tx);
1803 dirty_tx += NUM_TX_DESC;
1805 #endif /* RTL8139_NDEBUG */
1807 /* only wake the queue if we did work, and the queue is stopped */
1808 if (tp->dirty_tx != dirty_tx) {
1809 tp->dirty_tx = dirty_tx;
1811 netif_wake_queue (dev);
1816 /* TODO: clean this up! Rx reset need not be this intensive */
1817 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1818 struct rtl8139_private *tp, void __iomem *ioaddr)
1821 #ifdef CONFIG_8139_OLD_RX_RESET
1825 if (netif_msg_rx_err (tp))
1826 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1827 dev->name, rx_status);
1828 dev->stats.rx_errors++;
1829 if (!(rx_status & RxStatusOK)) {
1830 if (rx_status & RxTooLong) {
1831 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1832 dev->name, rx_status);
1833 /* A.C.: The chip hangs here. */
1835 if (rx_status & (RxBadSymbol | RxBadAlign))
1836 dev->stats.rx_frame_errors++;
1837 if (rx_status & (RxRunt | RxTooLong))
1838 dev->stats.rx_length_errors++;
1839 if (rx_status & RxCRCErr)
1840 dev->stats.rx_crc_errors++;
1842 tp->xstats.rx_lost_in_ring++;
1845 #ifndef CONFIG_8139_OLD_RX_RESET
1846 tmp8 = RTL_R8 (ChipCmd);
1847 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1848 RTL_W8 (ChipCmd, tmp8);
1849 RTL_W32 (RxConfig, tp->rx_config);
1852 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1854 /* disable receive */
1855 RTL_W8_F (ChipCmd, CmdTxEnb);
1857 while (--tmp_work > 0) {
1859 tmp8 = RTL_R8 (ChipCmd);
1860 if (!(tmp8 & CmdRxEnb))
1864 printk (KERN_WARNING PFX "rx stop wait too long\n");
1865 /* restart receive */
1867 while (--tmp_work > 0) {
1868 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1870 tmp8 = RTL_R8 (ChipCmd);
1871 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1875 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1877 /* and reinitialize all rx related registers */
1878 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1879 /* Must enable Tx/Rx before setting transfer thresholds! */
1880 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1882 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1883 RTL_W32 (RxConfig, tp->rx_config);
1886 DPRINTK("init buffer addresses\n");
1888 /* Lock Config[01234] and BMCR register writes */
1889 RTL_W8 (Cfg9346, Cfg9346_Lock);
1891 /* init Rx ring buffer DMA address */
1892 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1894 /* A.C.: Reset the multicast list. */
1895 __set_rx_mode (dev);
1900 static inline void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1901 u32 offset, unsigned int size)
1903 u32 left = RX_BUF_LEN - offset;
1906 skb_copy_to_linear_data(skb, ring + offset, left);
1907 skb_copy_to_linear_data_offset(skb, left, ring, size - left);
1909 skb_copy_to_linear_data(skb, ring + offset, size);
1913 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1915 void __iomem *ioaddr = tp->mmio_addr;
1918 status = RTL_R16 (IntrStatus) & RxAckBits;
1920 /* Clear out errors and receive interrupts */
1921 if (likely(status != 0)) {
1922 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1923 tp->dev->stats.rx_errors++;
1924 if (status & RxFIFOOver)
1925 tp->dev->stats.rx_fifo_errors++;
1927 RTL_W16_F (IntrStatus, RxAckBits);
1931 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1934 void __iomem *ioaddr = tp->mmio_addr;
1936 unsigned char *rx_ring = tp->rx_ring;
1937 unsigned int cur_rx = tp->cur_rx;
1938 unsigned int rx_size = 0;
1940 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1941 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1942 RTL_R16 (RxBufAddr),
1943 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1945 while (netif_running(dev) && received < budget
1946 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1947 u32 ring_offset = cur_rx % RX_BUF_LEN;
1949 unsigned int pkt_size;
1950 struct sk_buff *skb;
1954 /* read size+status of next frame from DMA ring buffer */
1955 rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset));
1956 rx_size = rx_status >> 16;
1957 pkt_size = rx_size - 4;
1959 if (netif_msg_rx_status(tp))
1960 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1961 " cur %4.4x.\n", dev->name, rx_status,
1963 #if RTL8139_DEBUG > 2
1966 DPRINTK ("%s: Frame contents ", dev->name);
1967 for (i = 0; i < 70; i++)
1969 rx_ring[ring_offset + i]);
1974 /* Packet copy from FIFO still in progress.
1975 * Theoretically, this should never happen
1976 * since EarlyRx is disabled.
1978 if (unlikely(rx_size == 0xfff0)) {
1979 if (!tp->fifo_copy_timeout)
1980 tp->fifo_copy_timeout = jiffies + 2;
1981 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1982 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1986 if (netif_msg_intr(tp)) {
1987 printk(KERN_DEBUG "%s: fifo copy in progress.",
1990 tp->xstats.early_rx++;
1995 tp->fifo_copy_timeout = 0;
1997 /* If Rx err or invalid rx_size/rx_status received
1998 * (which happens if we get lost in the ring),
1999 * Rx process gets reset, so we abort any further
2002 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2004 (!(rx_status & RxStatusOK)))) {
2005 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2010 /* Malloc up new buffer, compatible with net-2e. */
2011 /* Omit the four octet CRC from the length. */
2013 skb = netdev_alloc_skb(dev, pkt_size + NET_IP_ALIGN);
2015 skb_reserve (skb, NET_IP_ALIGN); /* 16 byte align the IP fields. */
2017 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2019 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
2021 skb_put (skb, pkt_size);
2023 skb->protocol = eth_type_trans (skb, dev);
2025 dev->last_rx = jiffies;
2026 dev->stats.rx_bytes += pkt_size;
2027 dev->stats.rx_packets++;
2029 netif_receive_skb (skb);
2031 if (net_ratelimit())
2032 printk (KERN_WARNING
2033 "%s: Memory squeeze, dropping packet.\n",
2035 dev->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 dev->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 dev->stats.rx_errors++;
2094 if (status & PCSTimeout)
2095 dev->stats.rx_length_errors++;
2096 if (status & RxUnderrun)
2097 dev->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 napi_struct *napi, int budget)
2110 struct rtl8139_private *tp = container_of(napi, struct rtl8139_private, napi);
2111 struct net_device *dev = tp->dev;
2112 void __iomem *ioaddr = tp->mmio_addr;
2115 spin_lock(&tp->rx_lock);
2117 if (likely(RTL_R16(IntrStatus) & RxAckBits))
2118 work_done += rtl8139_rx(dev, tp, budget);
2120 if (work_done < budget) {
2121 unsigned long flags;
2123 * Order is important since data can get interrupted
2124 * again when we think we are done.
2126 spin_lock_irqsave(&tp->lock, flags);
2127 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2128 __netif_rx_complete(dev, napi);
2129 spin_unlock_irqrestore(&tp->lock, flags);
2131 spin_unlock(&tp->rx_lock);
2136 /* The interrupt handler does all of the Rx thread work and cleans up
2137 after the Tx thread. */
2138 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance)
2140 struct net_device *dev = (struct net_device *) dev_instance;
2141 struct rtl8139_private *tp = netdev_priv(dev);
2142 void __iomem *ioaddr = tp->mmio_addr;
2143 u16 status, ackstat;
2144 int link_changed = 0; /* avoid bogus "uninit" warning */
2147 spin_lock (&tp->lock);
2148 status = RTL_R16 (IntrStatus);
2151 if (unlikely((status & rtl8139_intr_mask) == 0))
2156 /* h/w no longer present (hotplug?) or major error, bail */
2157 if (unlikely(status == 0xFFFF))
2160 /* close possible race's with dev_close */
2161 if (unlikely(!netif_running(dev))) {
2162 RTL_W16 (IntrMask, 0);
2166 /* Acknowledge all of the current interrupt sources ASAP, but
2167 an first get an additional status bit from CSCR. */
2168 if (unlikely(status & RxUnderrun))
2169 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2171 ackstat = status & ~(RxAckBits | TxErr);
2173 RTL_W16 (IntrStatus, ackstat);
2175 /* Receive packets are processed by poll routine.
2176 If not running start it now. */
2177 if (status & RxAckBits){
2178 if (netif_rx_schedule_prep(dev, &tp->napi)) {
2179 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2180 __netif_rx_schedule(dev, &tp->napi);
2184 /* Check uncommon events with one test. */
2185 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2186 rtl8139_weird_interrupt (dev, tp, ioaddr,
2187 status, link_changed);
2189 if (status & (TxOK | TxErr)) {
2190 rtl8139_tx_interrupt (dev, tp, ioaddr);
2192 RTL_W16 (IntrStatus, TxErr);
2195 spin_unlock (&tp->lock);
2197 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2198 dev->name, RTL_R16 (IntrStatus));
2199 return IRQ_RETVAL(handled);
2202 #ifdef CONFIG_NET_POLL_CONTROLLER
2204 * Polling receive - used by netconsole and other diagnostic tools
2205 * to allow network i/o with interrupts disabled.
2207 static void rtl8139_poll_controller(struct net_device *dev)
2209 disable_irq(dev->irq);
2210 rtl8139_interrupt(dev->irq, dev);
2211 enable_irq(dev->irq);
2215 static int rtl8139_close (struct net_device *dev)
2217 struct rtl8139_private *tp = netdev_priv(dev);
2218 void __iomem *ioaddr = tp->mmio_addr;
2219 unsigned long flags;
2221 netif_stop_queue(dev);
2222 napi_disable(&tp->napi);
2224 if (netif_msg_ifdown(tp))
2225 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2226 dev->name, RTL_R16 (IntrStatus));
2228 spin_lock_irqsave (&tp->lock, flags);
2230 /* Stop the chip's Tx and Rx DMA processes. */
2231 RTL_W8 (ChipCmd, 0);
2233 /* Disable interrupts by clearing the interrupt mask. */
2234 RTL_W16 (IntrMask, 0);
2236 /* Update the error counts. */
2237 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2238 RTL_W32 (RxMissed, 0);
2240 spin_unlock_irqrestore (&tp->lock, flags);
2242 free_irq (dev->irq, dev);
2244 rtl8139_tx_clear (tp);
2246 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
2247 tp->rx_ring, tp->rx_ring_dma);
2248 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
2249 tp->tx_bufs, tp->tx_bufs_dma);
2253 /* Green! Put the chip in low-power mode. */
2254 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2256 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2257 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2263 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2264 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2265 other threads or interrupts aren't messing with the 8139. */
2266 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2268 struct rtl8139_private *np = netdev_priv(dev);
2269 void __iomem *ioaddr = np->mmio_addr;
2271 spin_lock_irq(&np->lock);
2272 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2273 u8 cfg3 = RTL_R8 (Config3);
2274 u8 cfg5 = RTL_R8 (Config5);
2276 wol->supported = WAKE_PHY | WAKE_MAGIC
2277 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2280 if (cfg3 & Cfg3_LinkUp)
2281 wol->wolopts |= WAKE_PHY;
2282 if (cfg3 & Cfg3_Magic)
2283 wol->wolopts |= WAKE_MAGIC;
2284 /* (KON)FIXME: See how netdev_set_wol() handles the
2285 following constants. */
2286 if (cfg5 & Cfg5_UWF)
2287 wol->wolopts |= WAKE_UCAST;
2288 if (cfg5 & Cfg5_MWF)
2289 wol->wolopts |= WAKE_MCAST;
2290 if (cfg5 & Cfg5_BWF)
2291 wol->wolopts |= WAKE_BCAST;
2293 spin_unlock_irq(&np->lock);
2297 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2298 that wol points to kernel memory and other threads or interrupts
2299 aren't messing with the 8139. */
2300 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2302 struct rtl8139_private *np = netdev_priv(dev);
2303 void __iomem *ioaddr = np->mmio_addr;
2307 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2308 ? (WAKE_PHY | WAKE_MAGIC
2309 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2311 if (wol->wolopts & ~support)
2314 spin_lock_irq(&np->lock);
2315 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2316 if (wol->wolopts & WAKE_PHY)
2317 cfg3 |= Cfg3_LinkUp;
2318 if (wol->wolopts & WAKE_MAGIC)
2320 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2321 RTL_W8 (Config3, cfg3);
2322 RTL_W8 (Cfg9346, Cfg9346_Lock);
2324 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2325 /* (KON)FIXME: These are untested. We may have to set the
2326 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2328 if (wol->wolopts & WAKE_UCAST)
2330 if (wol->wolopts & WAKE_MCAST)
2332 if (wol->wolopts & WAKE_BCAST)
2334 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2335 spin_unlock_irq(&np->lock);
2340 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2342 struct rtl8139_private *np = netdev_priv(dev);
2343 strcpy(info->driver, DRV_NAME);
2344 strcpy(info->version, DRV_VERSION);
2345 strcpy(info->bus_info, pci_name(np->pci_dev));
2346 info->regdump_len = np->regs_len;
2349 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2351 struct rtl8139_private *np = netdev_priv(dev);
2352 spin_lock_irq(&np->lock);
2353 mii_ethtool_gset(&np->mii, cmd);
2354 spin_unlock_irq(&np->lock);
2358 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2360 struct rtl8139_private *np = netdev_priv(dev);
2362 spin_lock_irq(&np->lock);
2363 rc = mii_ethtool_sset(&np->mii, cmd);
2364 spin_unlock_irq(&np->lock);
2368 static int rtl8139_nway_reset(struct net_device *dev)
2370 struct rtl8139_private *np = netdev_priv(dev);
2371 return mii_nway_restart(&np->mii);
2374 static u32 rtl8139_get_link(struct net_device *dev)
2376 struct rtl8139_private *np = netdev_priv(dev);
2377 return mii_link_ok(&np->mii);
2380 static u32 rtl8139_get_msglevel(struct net_device *dev)
2382 struct rtl8139_private *np = netdev_priv(dev);
2383 return np->msg_enable;
2386 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2388 struct rtl8139_private *np = netdev_priv(dev);
2389 np->msg_enable = datum;
2392 static int rtl8139_get_regs_len(struct net_device *dev)
2394 struct rtl8139_private *np;
2395 /* TODO: we are too slack to do reg dumping for pio, for now */
2398 np = netdev_priv(dev);
2399 return np->regs_len;
2402 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2404 struct rtl8139_private *np;
2406 /* TODO: we are too slack to do reg dumping for pio, for now */
2409 np = netdev_priv(dev);
2411 regs->version = RTL_REGS_VER;
2413 spin_lock_irq(&np->lock);
2414 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2415 spin_unlock_irq(&np->lock);
2418 static int rtl8139_get_sset_count(struct net_device *dev, int sset)
2422 return RTL_NUM_STATS;
2428 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2430 struct rtl8139_private *np = netdev_priv(dev);
2432 data[0] = np->xstats.early_rx;
2433 data[1] = np->xstats.tx_buf_mapped;
2434 data[2] = np->xstats.tx_timeouts;
2435 data[3] = np->xstats.rx_lost_in_ring;
2438 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2440 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2443 static const struct ethtool_ops rtl8139_ethtool_ops = {
2444 .get_drvinfo = rtl8139_get_drvinfo,
2445 .get_settings = rtl8139_get_settings,
2446 .set_settings = rtl8139_set_settings,
2447 .get_regs_len = rtl8139_get_regs_len,
2448 .get_regs = rtl8139_get_regs,
2449 .nway_reset = rtl8139_nway_reset,
2450 .get_link = rtl8139_get_link,
2451 .get_msglevel = rtl8139_get_msglevel,
2452 .set_msglevel = rtl8139_set_msglevel,
2453 .get_wol = rtl8139_get_wol,
2454 .set_wol = rtl8139_set_wol,
2455 .get_strings = rtl8139_get_strings,
2456 .get_sset_count = rtl8139_get_sset_count,
2457 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2460 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2462 struct rtl8139_private *np = netdev_priv(dev);
2465 if (!netif_running(dev))
2468 spin_lock_irq(&np->lock);
2469 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2470 spin_unlock_irq(&np->lock);
2476 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2478 struct rtl8139_private *tp = netdev_priv(dev);
2479 void __iomem *ioaddr = tp->mmio_addr;
2480 unsigned long flags;
2482 if (netif_running(dev)) {
2483 spin_lock_irqsave (&tp->lock, flags);
2484 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2485 RTL_W32 (RxMissed, 0);
2486 spin_unlock_irqrestore (&tp->lock, flags);
2492 /* Set or clear the multicast filter for this adaptor.
2493 This routine is not state sensitive and need not be SMP locked. */
2495 static void __set_rx_mode (struct net_device *dev)
2497 struct rtl8139_private *tp = netdev_priv(dev);
2498 void __iomem *ioaddr = tp->mmio_addr;
2499 u32 mc_filter[2]; /* Multicast hash filter */
2503 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2504 dev->name, dev->flags, RTL_R32 (RxConfig));
2506 /* Note: do not reorder, GCC is clever about common statements. */
2507 if (dev->flags & IFF_PROMISC) {
2509 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2511 mc_filter[1] = mc_filter[0] = 0xffffffff;
2512 } else if ((dev->mc_count > multicast_filter_limit)
2513 || (dev->flags & IFF_ALLMULTI)) {
2514 /* Too many to filter perfectly -- accept all multicasts. */
2515 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2516 mc_filter[1] = mc_filter[0] = 0xffffffff;
2518 struct dev_mc_list *mclist;
2519 rx_mode = AcceptBroadcast | AcceptMyPhys;
2520 mc_filter[1] = mc_filter[0] = 0;
2521 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2522 i++, mclist = mclist->next) {
2523 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2525 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2526 rx_mode |= AcceptMulticast;
2530 /* We can safely update without stopping the chip. */
2531 tmp = rtl8139_rx_config | rx_mode;
2532 if (tp->rx_config != tmp) {
2533 RTL_W32_F (RxConfig, tmp);
2534 tp->rx_config = tmp;
2536 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2537 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2540 static void rtl8139_set_rx_mode (struct net_device *dev)
2542 unsigned long flags;
2543 struct rtl8139_private *tp = netdev_priv(dev);
2545 spin_lock_irqsave (&tp->lock, flags);
2547 spin_unlock_irqrestore (&tp->lock, flags);
2552 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2554 struct net_device *dev = pci_get_drvdata (pdev);
2555 struct rtl8139_private *tp = netdev_priv(dev);
2556 void __iomem *ioaddr = tp->mmio_addr;
2557 unsigned long flags;
2559 pci_save_state (pdev);
2561 if (!netif_running (dev))
2564 netif_device_detach (dev);
2566 spin_lock_irqsave (&tp->lock, flags);
2568 /* Disable interrupts, stop Tx and Rx. */
2569 RTL_W16 (IntrMask, 0);
2570 RTL_W8 (ChipCmd, 0);
2572 /* Update the error counts. */
2573 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2574 RTL_W32 (RxMissed, 0);
2576 spin_unlock_irqrestore (&tp->lock, flags);
2578 pci_set_power_state (pdev, PCI_D3hot);
2584 static int rtl8139_resume (struct pci_dev *pdev)
2586 struct net_device *dev = pci_get_drvdata (pdev);
2588 pci_restore_state (pdev);
2589 if (!netif_running (dev))
2591 pci_set_power_state (pdev, PCI_D0);
2592 rtl8139_init_ring (dev);
2593 rtl8139_hw_start (dev);
2594 netif_device_attach (dev);
2598 #endif /* CONFIG_PM */
2601 static struct pci_driver rtl8139_pci_driver = {
2603 .id_table = rtl8139_pci_tbl,
2604 .probe = rtl8139_init_one,
2605 .remove = __devexit_p(rtl8139_remove_one),
2607 .suspend = rtl8139_suspend,
2608 .resume = rtl8139_resume,
2609 #endif /* CONFIG_PM */
2613 static int __init rtl8139_init_module (void)
2615 /* when we're a module, we always print a version message,
2616 * even if no 8139 board is found.
2619 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2622 return pci_register_driver(&rtl8139_pci_driver);
2626 static void __exit rtl8139_cleanup_module (void)
2628 pci_unregister_driver (&rtl8139_pci_driver);
2632 module_init(rtl8139_init_module);
2633 module_exit(rtl8139_cleanup_module);