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;
929 assert (pdev != NULL);
930 assert (ent != NULL);
934 /* when we're built into the kernel, the driver version message
935 * is only printed if at least one 8139 board has been found
939 static int printed_version;
940 if (!printed_version++)
941 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
945 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
946 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
948 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip, use 8139cp\n",
949 pdev->vendor, pdev->device, pdev->revision);
953 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
954 pdev->device == PCI_DEVICE_ID_REALTEK_8139 &&
955 pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS &&
956 pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) {
957 printk(KERN_INFO "8139too: OQO Model 2 detected. Forcing PIO\n");
961 i = rtl8139_init_board (pdev, &dev);
965 assert (dev != NULL);
966 tp = netdev_priv(dev);
969 ioaddr = tp->mmio_addr;
970 assert (ioaddr != NULL);
972 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
973 for (i = 0; i < 3; i++)
974 ((__le16 *) (dev->dev_addr))[i] =
975 cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len));
976 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
978 /* The Rtl8139-specific entries in the device structure. */
979 dev->open = rtl8139_open;
980 dev->hard_start_xmit = rtl8139_start_xmit;
981 netif_napi_add(dev, &tp->napi, rtl8139_poll, 64);
982 dev->stop = rtl8139_close;
983 dev->get_stats = rtl8139_get_stats;
984 dev->set_multicast_list = rtl8139_set_rx_mode;
985 dev->do_ioctl = netdev_ioctl;
986 dev->ethtool_ops = &rtl8139_ethtool_ops;
987 dev->tx_timeout = rtl8139_tx_timeout;
988 dev->watchdog_timeo = TX_TIMEOUT;
989 #ifdef CONFIG_NET_POLL_CONTROLLER
990 dev->poll_controller = rtl8139_poll_controller;
993 /* note: the hardware is not capable of sg/csum/highdma, however
994 * through the use of skb_copy_and_csum_dev we enable these
997 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
999 dev->irq = pdev->irq;
1001 /* tp zeroed and aligned in alloc_etherdev */
1002 tp = netdev_priv(dev);
1004 /* note: tp->chipset set in rtl8139_init_board */
1005 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1006 tp->mmio_addr = ioaddr;
1008 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1009 spin_lock_init (&tp->lock);
1010 spin_lock_init (&tp->rx_lock);
1011 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1013 tp->mii.mdio_read = mdio_read;
1014 tp->mii.mdio_write = mdio_write;
1015 tp->mii.phy_id_mask = 0x3f;
1016 tp->mii.reg_num_mask = 0x1f;
1018 /* dev is fully set up and ready to use now */
1019 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1020 i = register_netdev (dev);
1021 if (i) goto err_out;
1023 pci_set_drvdata (pdev, dev);
1025 printk (KERN_INFO "%s: %s at 0x%lx, "
1028 board_info[ent->driver_data].name,
1033 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
1034 dev->name, rtl_chip_info[tp->chipset].name);
1036 /* Find the connected MII xcvrs.
1037 Doing this in open() would allow detecting external xcvrs later, but
1038 takes too much time. */
1039 #ifdef CONFIG_8139TOO_8129
1040 if (tp->drv_flags & HAS_MII_XCVR) {
1041 int phy, phy_idx = 0;
1042 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1043 int mii_status = mdio_read(dev, phy, 1);
1044 if (mii_status != 0xffff && mii_status != 0x0000) {
1045 u16 advertising = mdio_read(dev, phy, 4);
1046 tp->phys[phy_idx++] = phy;
1047 printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x "
1048 "advertising %4.4x.\n",
1049 dev->name, phy, mii_status, advertising);
1053 printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
1061 tp->mii.phy_id = tp->phys[0];
1063 /* The lower four bits are the media type. */
1064 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1066 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1067 tp->default_port = option & 0xFF;
1068 if (tp->default_port)
1069 tp->mii.force_media = 1;
1071 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1072 tp->mii.full_duplex = full_duplex[board_idx];
1073 if (tp->mii.full_duplex) {
1074 printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
1075 /* Changing the MII-advertised media because might prevent
1077 tp->mii.force_media = 1;
1079 if (tp->default_port) {
1080 printk(KERN_INFO " Forcing %dMbps %s-duplex operation.\n",
1081 (option & 0x20 ? 100 : 10),
1082 (option & 0x10 ? "full" : "half"));
1083 mdio_write(dev, tp->phys[0], 0,
1084 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1085 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1088 /* Put the chip into low-power mode. */
1089 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1090 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1095 __rtl8139_cleanup_dev (dev);
1096 pci_disable_device (pdev);
1101 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1103 struct net_device *dev = pci_get_drvdata (pdev);
1105 assert (dev != NULL);
1107 flush_scheduled_work();
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() (void)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 const 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, IRQF_SHARED, dev->name, dev);
1315 tp->tx_bufs = dma_alloc_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1316 &tp->tx_bufs_dma, GFP_KERNEL);
1317 tp->rx_ring = dma_alloc_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1318 &tp->rx_ring_dma, GFP_KERNEL);
1319 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1320 free_irq(dev->irq, dev);
1323 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1324 tp->tx_bufs, tp->tx_bufs_dma);
1326 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1327 tp->rx_ring, tp->rx_ring_dma);
1333 napi_enable(&tp->napi);
1335 tp->mii.full_duplex = tp->mii.force_media;
1336 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1338 rtl8139_init_ring (dev);
1339 rtl8139_hw_start (dev);
1340 netif_start_queue (dev);
1342 if (netif_msg_ifup(tp))
1343 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#llx IRQ %d"
1344 " GP Pins %2.2x %s-duplex.\n", dev->name,
1345 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1346 dev->irq, RTL_R8 (MediaStatus),
1347 tp->mii.full_duplex ? "full" : "half");
1349 rtl8139_start_thread(tp);
1355 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1357 struct rtl8139_private *tp = netdev_priv(dev);
1359 if (tp->phys[0] >= 0) {
1360 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1364 /* Start the hardware at open or resume. */
1365 static void rtl8139_hw_start (struct net_device *dev)
1367 struct rtl8139_private *tp = netdev_priv(dev);
1368 void __iomem *ioaddr = tp->mmio_addr;
1372 /* Bring old chips out of low-power mode. */
1373 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1374 RTL_W8 (HltClk, 'R');
1376 rtl8139_chip_reset (ioaddr);
1378 /* unlock Config[01234] and BMCR register writes */
1379 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1380 /* Restore our idea of the MAC address. */
1381 RTL_W32_F (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
1382 RTL_W32_F (MAC0 + 4, le16_to_cpu (*(__le16 *) (dev->dev_addr + 4)));
1384 /* Must enable Tx/Rx before setting transfer thresholds! */
1385 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1387 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1388 RTL_W32 (RxConfig, tp->rx_config);
1389 RTL_W32 (TxConfig, rtl8139_tx_config);
1393 rtl_check_media (dev, 1);
1395 if (tp->chipset >= CH_8139B) {
1396 /* Disable magic packet scanning, which is enabled
1397 * when PM is enabled in Config1. It can be reenabled
1398 * via ETHTOOL_SWOL if desired. */
1399 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1402 DPRINTK("init buffer addresses\n");
1404 /* Lock Config[01234] and BMCR register writes */
1405 RTL_W8 (Cfg9346, Cfg9346_Lock);
1407 /* init Rx ring buffer DMA address */
1408 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1410 /* init Tx buffer DMA addresses */
1411 for (i = 0; i < NUM_TX_DESC; i++)
1412 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1414 RTL_W32 (RxMissed, 0);
1416 rtl8139_set_rx_mode (dev);
1418 /* no early-rx interrupts */
1419 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1421 /* make sure RxTx has started */
1422 tmp = RTL_R8 (ChipCmd);
1423 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1424 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1426 /* Enable all known interrupts by setting the interrupt mask. */
1427 RTL_W16 (IntrMask, rtl8139_intr_mask);
1431 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1432 static void rtl8139_init_ring (struct net_device *dev)
1434 struct rtl8139_private *tp = netdev_priv(dev);
1441 for (i = 0; i < NUM_TX_DESC; i++)
1442 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1446 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1447 static int next_tick = 3 * HZ;
1449 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1450 static inline void rtl8139_tune_twister (struct net_device *dev,
1451 struct rtl8139_private *tp) {}
1453 enum TwisterParamVals {
1454 PARA78_default = 0x78fa8388,
1455 PARA7c_default = 0xcb38de43, /* param[0][3] */
1456 PARA7c_xxx = 0xcb38de43,
1459 static const unsigned long param[4][4] = {
1460 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1461 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1462 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1463 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1466 static void rtl8139_tune_twister (struct net_device *dev,
1467 struct rtl8139_private *tp)
1470 void __iomem *ioaddr = tp->mmio_addr;
1472 /* This is a complicated state machine to configure the "twister" for
1473 impedance/echos based on the cable length.
1474 All of this is magic and undocumented.
1476 switch (tp->twistie) {
1478 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1479 /* We have link beat, let us tune the twister. */
1480 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1481 tp->twistie = 2; /* Change to state 2. */
1482 next_tick = HZ / 10;
1484 /* Just put in some reasonable defaults for when beat returns. */
1485 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1486 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1487 RTL_W32 (PARA78, PARA78_default);
1488 RTL_W32 (PARA7c, PARA7c_default);
1489 tp->twistie = 0; /* Bail from future actions. */
1493 /* Read how long it took to hear the echo. */
1494 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1495 if (linkcase == 0x7000)
1497 else if (linkcase == 0x3000)
1499 else if (linkcase == 0x1000)
1504 tp->twistie = 3; /* Change to state 2. */
1505 next_tick = HZ / 10;
1508 /* Put out four tuning parameters, one per 100msec. */
1509 if (tp->twist_col == 0)
1510 RTL_W16 (FIFOTMS, 0);
1511 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1512 [(int) tp->twist_col]);
1513 next_tick = HZ / 10;
1514 if (++tp->twist_col >= 4) {
1515 /* For short cables we are done.
1516 For long cables (row == 3) check for mistune. */
1518 (tp->twist_row == 3) ? 4 : 0;
1522 /* Special case for long cables: check for mistune. */
1523 if ((RTL_R16 (CSCR) &
1524 CSCR_LinkStatusBits) == 0x7000) {
1528 RTL_W32 (PARA7c, 0xfb38de03);
1530 next_tick = HZ / 10;
1534 /* Retune for shorter cable (column 2). */
1535 RTL_W32 (FIFOTMS, 0x20);
1536 RTL_W32 (PARA78, PARA78_default);
1537 RTL_W32 (PARA7c, PARA7c_default);
1538 RTL_W32 (FIFOTMS, 0x00);
1542 next_tick = HZ / 10;
1550 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1552 static inline void rtl8139_thread_iter (struct net_device *dev,
1553 struct rtl8139_private *tp,
1554 void __iomem *ioaddr)
1558 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1560 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1561 int duplex = (mii_lpa & LPA_100FULL)
1562 || (mii_lpa & 0x01C0) == 0x0040;
1563 if (tp->mii.full_duplex != duplex) {
1564 tp->mii.full_duplex = duplex;
1568 "%s: Setting %s-duplex based on MII #%d link"
1569 " partner ability of %4.4x.\n",
1571 tp->mii.full_duplex ? "full" : "half",
1572 tp->phys[0], mii_lpa);
1574 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1578 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1579 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1580 RTL_W8 (Cfg9346, Cfg9346_Lock);
1585 next_tick = HZ * 60;
1587 rtl8139_tune_twister (dev, tp);
1589 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1590 dev->name, RTL_R16 (NWayLPAR));
1591 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1592 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1593 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1594 dev->name, RTL_R8 (Config0),
1598 static void rtl8139_thread (struct work_struct *work)
1600 struct rtl8139_private *tp =
1601 container_of(work, struct rtl8139_private, thread.work);
1602 struct net_device *dev = tp->mii.dev;
1603 unsigned long thr_delay = next_tick;
1607 if (!netif_running(dev))
1610 if (tp->watchdog_fired) {
1611 tp->watchdog_fired = 0;
1612 rtl8139_tx_timeout_task(work);
1614 rtl8139_thread_iter(dev, tp, tp->mmio_addr);
1616 if (tp->have_thread)
1617 schedule_delayed_work(&tp->thread, thr_delay);
1622 static void rtl8139_start_thread(struct rtl8139_private *tp)
1625 if (tp->chipset == CH_8139_K)
1627 else if (tp->drv_flags & HAS_LNK_CHNG)
1630 tp->have_thread = 1;
1631 tp->watchdog_fired = 0;
1633 schedule_delayed_work(&tp->thread, next_tick);
1636 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1641 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1644 static void rtl8139_tx_timeout_task (struct work_struct *work)
1646 struct rtl8139_private *tp =
1647 container_of(work, struct rtl8139_private, thread.work);
1648 struct net_device *dev = tp->mii.dev;
1649 void __iomem *ioaddr = tp->mmio_addr;
1653 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1654 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1655 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1656 /* Emit info to figure out what went wrong. */
1657 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1658 dev->name, tp->cur_tx, tp->dirty_tx);
1659 for (i = 0; i < NUM_TX_DESC; i++)
1660 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1661 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1662 i == tp->dirty_tx % NUM_TX_DESC ?
1663 " (queue head)" : "");
1665 tp->xstats.tx_timeouts++;
1667 /* disable Tx ASAP, if not already */
1668 tmp8 = RTL_R8 (ChipCmd);
1669 if (tmp8 & CmdTxEnb)
1670 RTL_W8 (ChipCmd, CmdRxEnb);
1672 spin_lock_bh(&tp->rx_lock);
1673 /* Disable interrupts by clearing the interrupt mask. */
1674 RTL_W16 (IntrMask, 0x0000);
1676 /* Stop a shared interrupt from scavenging while we are. */
1677 spin_lock_irq(&tp->lock);
1678 rtl8139_tx_clear (tp);
1679 spin_unlock_irq(&tp->lock);
1681 /* ...and finally, reset everything */
1682 if (netif_running(dev)) {
1683 rtl8139_hw_start (dev);
1684 netif_wake_queue (dev);
1686 spin_unlock_bh(&tp->rx_lock);
1689 static void rtl8139_tx_timeout (struct net_device *dev)
1691 struct rtl8139_private *tp = netdev_priv(dev);
1693 tp->watchdog_fired = 1;
1694 if (!tp->have_thread) {
1695 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1696 schedule_delayed_work(&tp->thread, next_tick);
1700 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1702 struct rtl8139_private *tp = netdev_priv(dev);
1703 void __iomem *ioaddr = tp->mmio_addr;
1705 unsigned int len = skb->len;
1706 unsigned long flags;
1708 /* Calculate the next Tx descriptor entry. */
1709 entry = tp->cur_tx % NUM_TX_DESC;
1711 /* Note: the chip doesn't have auto-pad! */
1712 if (likely(len < TX_BUF_SIZE)) {
1714 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1715 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1719 dev->stats.tx_dropped++;
1723 spin_lock_irqsave(&tp->lock, flags);
1725 * Writing to TxStatus triggers a DMA transfer of the data
1726 * copied to tp->tx_buf[entry] above. Use a memory barrier
1727 * to make sure that the device sees the updated data.
1730 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1731 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1733 dev->trans_start = jiffies;
1737 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1738 netif_stop_queue (dev);
1739 spin_unlock_irqrestore(&tp->lock, flags);
1741 if (netif_msg_tx_queued(tp))
1742 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1743 dev->name, len, entry);
1749 static void rtl8139_tx_interrupt (struct net_device *dev,
1750 struct rtl8139_private *tp,
1751 void __iomem *ioaddr)
1753 unsigned long dirty_tx, tx_left;
1755 assert (dev != NULL);
1756 assert (ioaddr != NULL);
1758 dirty_tx = tp->dirty_tx;
1759 tx_left = tp->cur_tx - dirty_tx;
1760 while (tx_left > 0) {
1761 int entry = dirty_tx % NUM_TX_DESC;
1764 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1766 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1767 break; /* It still hasn't been Txed */
1769 /* Note: TxCarrierLost is always asserted at 100mbps. */
1770 if (txstatus & (TxOutOfWindow | TxAborted)) {
1771 /* There was an major error, log it. */
1772 if (netif_msg_tx_err(tp))
1773 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1774 dev->name, txstatus);
1775 dev->stats.tx_errors++;
1776 if (txstatus & TxAborted) {
1777 dev->stats.tx_aborted_errors++;
1778 RTL_W32 (TxConfig, TxClearAbt);
1779 RTL_W16 (IntrStatus, TxErr);
1782 if (txstatus & TxCarrierLost)
1783 dev->stats.tx_carrier_errors++;
1784 if (txstatus & TxOutOfWindow)
1785 dev->stats.tx_window_errors++;
1787 if (txstatus & TxUnderrun) {
1788 /* Add 64 to the Tx FIFO threshold. */
1789 if (tp->tx_flag < 0x00300000)
1790 tp->tx_flag += 0x00020000;
1791 dev->stats.tx_fifo_errors++;
1793 dev->stats.collisions += (txstatus >> 24) & 15;
1794 dev->stats.tx_bytes += txstatus & 0x7ff;
1795 dev->stats.tx_packets++;
1802 #ifndef RTL8139_NDEBUG
1803 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1804 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1805 dev->name, dirty_tx, tp->cur_tx);
1806 dirty_tx += NUM_TX_DESC;
1808 #endif /* RTL8139_NDEBUG */
1810 /* only wake the queue if we did work, and the queue is stopped */
1811 if (tp->dirty_tx != dirty_tx) {
1812 tp->dirty_tx = dirty_tx;
1814 netif_wake_queue (dev);
1819 /* TODO: clean this up! Rx reset need not be this intensive */
1820 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1821 struct rtl8139_private *tp, void __iomem *ioaddr)
1824 #ifdef CONFIG_8139_OLD_RX_RESET
1828 if (netif_msg_rx_err (tp))
1829 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1830 dev->name, rx_status);
1831 dev->stats.rx_errors++;
1832 if (!(rx_status & RxStatusOK)) {
1833 if (rx_status & RxTooLong) {
1834 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1835 dev->name, rx_status);
1836 /* A.C.: The chip hangs here. */
1838 if (rx_status & (RxBadSymbol | RxBadAlign))
1839 dev->stats.rx_frame_errors++;
1840 if (rx_status & (RxRunt | RxTooLong))
1841 dev->stats.rx_length_errors++;
1842 if (rx_status & RxCRCErr)
1843 dev->stats.rx_crc_errors++;
1845 tp->xstats.rx_lost_in_ring++;
1848 #ifndef CONFIG_8139_OLD_RX_RESET
1849 tmp8 = RTL_R8 (ChipCmd);
1850 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1851 RTL_W8 (ChipCmd, tmp8);
1852 RTL_W32 (RxConfig, tp->rx_config);
1855 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1857 /* disable receive */
1858 RTL_W8_F (ChipCmd, CmdTxEnb);
1860 while (--tmp_work > 0) {
1862 tmp8 = RTL_R8 (ChipCmd);
1863 if (!(tmp8 & CmdRxEnb))
1867 printk (KERN_WARNING PFX "rx stop wait too long\n");
1868 /* restart receive */
1870 while (--tmp_work > 0) {
1871 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1873 tmp8 = RTL_R8 (ChipCmd);
1874 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1878 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1880 /* and reinitialize all rx related registers */
1881 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1882 /* Must enable Tx/Rx before setting transfer thresholds! */
1883 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1885 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1886 RTL_W32 (RxConfig, tp->rx_config);
1889 DPRINTK("init buffer addresses\n");
1891 /* Lock Config[01234] and BMCR register writes */
1892 RTL_W8 (Cfg9346, Cfg9346_Lock);
1894 /* init Rx ring buffer DMA address */
1895 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1897 /* A.C.: Reset the multicast list. */
1898 __set_rx_mode (dev);
1903 static inline void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1904 u32 offset, unsigned int size)
1906 u32 left = RX_BUF_LEN - offset;
1909 skb_copy_to_linear_data(skb, ring + offset, left);
1910 skb_copy_to_linear_data_offset(skb, left, ring, size - left);
1912 skb_copy_to_linear_data(skb, ring + offset, size);
1916 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1918 void __iomem *ioaddr = tp->mmio_addr;
1921 status = RTL_R16 (IntrStatus) & RxAckBits;
1923 /* Clear out errors and receive interrupts */
1924 if (likely(status != 0)) {
1925 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1926 tp->dev->stats.rx_errors++;
1927 if (status & RxFIFOOver)
1928 tp->dev->stats.rx_fifo_errors++;
1930 RTL_W16_F (IntrStatus, RxAckBits);
1934 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1937 void __iomem *ioaddr = tp->mmio_addr;
1939 unsigned char *rx_ring = tp->rx_ring;
1940 unsigned int cur_rx = tp->cur_rx;
1941 unsigned int rx_size = 0;
1943 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1944 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1945 RTL_R16 (RxBufAddr),
1946 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1948 while (netif_running(dev) && received < budget
1949 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1950 u32 ring_offset = cur_rx % RX_BUF_LEN;
1952 unsigned int pkt_size;
1953 struct sk_buff *skb;
1957 /* read size+status of next frame from DMA ring buffer */
1958 rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset));
1959 rx_size = rx_status >> 16;
1960 pkt_size = rx_size - 4;
1962 if (netif_msg_rx_status(tp))
1963 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1964 " cur %4.4x.\n", dev->name, rx_status,
1966 #if RTL8139_DEBUG > 2
1969 DPRINTK ("%s: Frame contents ", dev->name);
1970 for (i = 0; i < 70; i++)
1972 rx_ring[ring_offset + i]);
1977 /* Packet copy from FIFO still in progress.
1978 * Theoretically, this should never happen
1979 * since EarlyRx is disabled.
1981 if (unlikely(rx_size == 0xfff0)) {
1982 if (!tp->fifo_copy_timeout)
1983 tp->fifo_copy_timeout = jiffies + 2;
1984 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1985 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1989 if (netif_msg_intr(tp)) {
1990 printk(KERN_DEBUG "%s: fifo copy in progress.",
1993 tp->xstats.early_rx++;
1998 tp->fifo_copy_timeout = 0;
2000 /* If Rx err or invalid rx_size/rx_status received
2001 * (which happens if we get lost in the ring),
2002 * Rx process gets reset, so we abort any further
2005 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2007 (!(rx_status & RxStatusOK)))) {
2008 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2013 /* Malloc up new buffer, compatible with net-2e. */
2014 /* Omit the four octet CRC from the length. */
2016 skb = netdev_alloc_skb(dev, pkt_size + NET_IP_ALIGN);
2018 skb_reserve (skb, NET_IP_ALIGN); /* 16 byte align the IP fields. */
2020 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2022 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
2024 skb_put (skb, pkt_size);
2026 skb->protocol = eth_type_trans (skb, dev);
2028 dev->stats.rx_bytes += pkt_size;
2029 dev->stats.rx_packets++;
2031 netif_receive_skb (skb);
2033 if (net_ratelimit())
2034 printk (KERN_WARNING
2035 "%s: Memory squeeze, dropping packet.\n",
2037 dev->stats.rx_dropped++;
2041 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2042 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2044 rtl8139_isr_ack(tp);
2047 if (unlikely(!received || rx_size == 0xfff0))
2048 rtl8139_isr_ack(tp);
2050 #if RTL8139_DEBUG > 1
2051 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2052 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2053 RTL_R16 (RxBufAddr),
2054 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2057 tp->cur_rx = cur_rx;
2060 * The receive buffer should be mostly empty.
2061 * Tell NAPI to reenable the Rx irq.
2063 if (tp->fifo_copy_timeout)
2071 static void rtl8139_weird_interrupt (struct net_device *dev,
2072 struct rtl8139_private *tp,
2073 void __iomem *ioaddr,
2074 int status, int link_changed)
2076 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2079 assert (dev != NULL);
2080 assert (tp != NULL);
2081 assert (ioaddr != NULL);
2083 /* Update the error count. */
2084 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2085 RTL_W32 (RxMissed, 0);
2087 if ((status & RxUnderrun) && link_changed &&
2088 (tp->drv_flags & HAS_LNK_CHNG)) {
2089 rtl_check_media(dev, 0);
2090 status &= ~RxUnderrun;
2093 if (status & (RxUnderrun | RxErr))
2094 dev->stats.rx_errors++;
2096 if (status & PCSTimeout)
2097 dev->stats.rx_length_errors++;
2098 if (status & RxUnderrun)
2099 dev->stats.rx_fifo_errors++;
2100 if (status & PCIErr) {
2102 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2103 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2105 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2106 dev->name, pci_cmd_status);
2110 static int rtl8139_poll(struct napi_struct *napi, int budget)
2112 struct rtl8139_private *tp = container_of(napi, struct rtl8139_private, napi);
2113 struct net_device *dev = tp->dev;
2114 void __iomem *ioaddr = tp->mmio_addr;
2117 spin_lock(&tp->rx_lock);
2119 if (likely(RTL_R16(IntrStatus) & RxAckBits))
2120 work_done += rtl8139_rx(dev, tp, budget);
2122 if (work_done < budget) {
2123 unsigned long flags;
2125 * Order is important since data can get interrupted
2126 * again when we think we are done.
2128 spin_lock_irqsave(&tp->lock, flags);
2129 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2130 __netif_rx_complete(dev, napi);
2131 spin_unlock_irqrestore(&tp->lock, flags);
2133 spin_unlock(&tp->rx_lock);
2138 /* The interrupt handler does all of the Rx thread work and cleans up
2139 after the Tx thread. */
2140 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance)
2142 struct net_device *dev = (struct net_device *) dev_instance;
2143 struct rtl8139_private *tp = netdev_priv(dev);
2144 void __iomem *ioaddr = tp->mmio_addr;
2145 u16 status, ackstat;
2146 int link_changed = 0; /* avoid bogus "uninit" warning */
2149 spin_lock (&tp->lock);
2150 status = RTL_R16 (IntrStatus);
2153 if (unlikely((status & rtl8139_intr_mask) == 0))
2158 /* h/w no longer present (hotplug?) or major error, bail */
2159 if (unlikely(status == 0xFFFF))
2162 /* close possible race's with dev_close */
2163 if (unlikely(!netif_running(dev))) {
2164 RTL_W16 (IntrMask, 0);
2168 /* Acknowledge all of the current interrupt sources ASAP, but
2169 an first get an additional status bit from CSCR. */
2170 if (unlikely(status & RxUnderrun))
2171 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2173 ackstat = status & ~(RxAckBits | TxErr);
2175 RTL_W16 (IntrStatus, ackstat);
2177 /* Receive packets are processed by poll routine.
2178 If not running start it now. */
2179 if (status & RxAckBits){
2180 if (netif_rx_schedule_prep(dev, &tp->napi)) {
2181 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2182 __netif_rx_schedule(dev, &tp->napi);
2186 /* Check uncommon events with one test. */
2187 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2188 rtl8139_weird_interrupt (dev, tp, ioaddr,
2189 status, link_changed);
2191 if (status & (TxOK | TxErr)) {
2192 rtl8139_tx_interrupt (dev, tp, ioaddr);
2194 RTL_W16 (IntrStatus, TxErr);
2197 spin_unlock (&tp->lock);
2199 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2200 dev->name, RTL_R16 (IntrStatus));
2201 return IRQ_RETVAL(handled);
2204 #ifdef CONFIG_NET_POLL_CONTROLLER
2206 * Polling receive - used by netconsole and other diagnostic tools
2207 * to allow network i/o with interrupts disabled.
2209 static void rtl8139_poll_controller(struct net_device *dev)
2211 disable_irq(dev->irq);
2212 rtl8139_interrupt(dev->irq, dev);
2213 enable_irq(dev->irq);
2217 static int rtl8139_close (struct net_device *dev)
2219 struct rtl8139_private *tp = netdev_priv(dev);
2220 void __iomem *ioaddr = tp->mmio_addr;
2221 unsigned long flags;
2223 netif_stop_queue(dev);
2224 napi_disable(&tp->napi);
2226 if (netif_msg_ifdown(tp))
2227 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2228 dev->name, RTL_R16 (IntrStatus));
2230 spin_lock_irqsave (&tp->lock, flags);
2232 /* Stop the chip's Tx and Rx DMA processes. */
2233 RTL_W8 (ChipCmd, 0);
2235 /* Disable interrupts by clearing the interrupt mask. */
2236 RTL_W16 (IntrMask, 0);
2238 /* Update the error counts. */
2239 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2240 RTL_W32 (RxMissed, 0);
2242 spin_unlock_irqrestore (&tp->lock, flags);
2244 free_irq (dev->irq, dev);
2246 rtl8139_tx_clear (tp);
2248 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
2249 tp->rx_ring, tp->rx_ring_dma);
2250 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
2251 tp->tx_bufs, tp->tx_bufs_dma);
2255 /* Green! Put the chip in low-power mode. */
2256 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2258 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2259 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2265 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2266 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2267 other threads or interrupts aren't messing with the 8139. */
2268 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2270 struct rtl8139_private *np = netdev_priv(dev);
2271 void __iomem *ioaddr = np->mmio_addr;
2273 spin_lock_irq(&np->lock);
2274 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2275 u8 cfg3 = RTL_R8 (Config3);
2276 u8 cfg5 = RTL_R8 (Config5);
2278 wol->supported = WAKE_PHY | WAKE_MAGIC
2279 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2282 if (cfg3 & Cfg3_LinkUp)
2283 wol->wolopts |= WAKE_PHY;
2284 if (cfg3 & Cfg3_Magic)
2285 wol->wolopts |= WAKE_MAGIC;
2286 /* (KON)FIXME: See how netdev_set_wol() handles the
2287 following constants. */
2288 if (cfg5 & Cfg5_UWF)
2289 wol->wolopts |= WAKE_UCAST;
2290 if (cfg5 & Cfg5_MWF)
2291 wol->wolopts |= WAKE_MCAST;
2292 if (cfg5 & Cfg5_BWF)
2293 wol->wolopts |= WAKE_BCAST;
2295 spin_unlock_irq(&np->lock);
2299 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2300 that wol points to kernel memory and other threads or interrupts
2301 aren't messing with the 8139. */
2302 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2304 struct rtl8139_private *np = netdev_priv(dev);
2305 void __iomem *ioaddr = np->mmio_addr;
2309 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2310 ? (WAKE_PHY | WAKE_MAGIC
2311 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2313 if (wol->wolopts & ~support)
2316 spin_lock_irq(&np->lock);
2317 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2318 if (wol->wolopts & WAKE_PHY)
2319 cfg3 |= Cfg3_LinkUp;
2320 if (wol->wolopts & WAKE_MAGIC)
2322 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2323 RTL_W8 (Config3, cfg3);
2324 RTL_W8 (Cfg9346, Cfg9346_Lock);
2326 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2327 /* (KON)FIXME: These are untested. We may have to set the
2328 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2330 if (wol->wolopts & WAKE_UCAST)
2332 if (wol->wolopts & WAKE_MCAST)
2334 if (wol->wolopts & WAKE_BCAST)
2336 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2337 spin_unlock_irq(&np->lock);
2342 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2344 struct rtl8139_private *np = netdev_priv(dev);
2345 strcpy(info->driver, DRV_NAME);
2346 strcpy(info->version, DRV_VERSION);
2347 strcpy(info->bus_info, pci_name(np->pci_dev));
2348 info->regdump_len = np->regs_len;
2351 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2353 struct rtl8139_private *np = netdev_priv(dev);
2354 spin_lock_irq(&np->lock);
2355 mii_ethtool_gset(&np->mii, cmd);
2356 spin_unlock_irq(&np->lock);
2360 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2362 struct rtl8139_private *np = netdev_priv(dev);
2364 spin_lock_irq(&np->lock);
2365 rc = mii_ethtool_sset(&np->mii, cmd);
2366 spin_unlock_irq(&np->lock);
2370 static int rtl8139_nway_reset(struct net_device *dev)
2372 struct rtl8139_private *np = netdev_priv(dev);
2373 return mii_nway_restart(&np->mii);
2376 static u32 rtl8139_get_link(struct net_device *dev)
2378 struct rtl8139_private *np = netdev_priv(dev);
2379 return mii_link_ok(&np->mii);
2382 static u32 rtl8139_get_msglevel(struct net_device *dev)
2384 struct rtl8139_private *np = netdev_priv(dev);
2385 return np->msg_enable;
2388 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2390 struct rtl8139_private *np = netdev_priv(dev);
2391 np->msg_enable = datum;
2394 static int rtl8139_get_regs_len(struct net_device *dev)
2396 struct rtl8139_private *np;
2397 /* TODO: we are too slack to do reg dumping for pio, for now */
2400 np = netdev_priv(dev);
2401 return np->regs_len;
2404 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2406 struct rtl8139_private *np;
2408 /* TODO: we are too slack to do reg dumping for pio, for now */
2411 np = netdev_priv(dev);
2413 regs->version = RTL_REGS_VER;
2415 spin_lock_irq(&np->lock);
2416 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2417 spin_unlock_irq(&np->lock);
2420 static int rtl8139_get_sset_count(struct net_device *dev, int sset)
2424 return RTL_NUM_STATS;
2430 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2432 struct rtl8139_private *np = netdev_priv(dev);
2434 data[0] = np->xstats.early_rx;
2435 data[1] = np->xstats.tx_buf_mapped;
2436 data[2] = np->xstats.tx_timeouts;
2437 data[3] = np->xstats.rx_lost_in_ring;
2440 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2442 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2445 static const struct ethtool_ops rtl8139_ethtool_ops = {
2446 .get_drvinfo = rtl8139_get_drvinfo,
2447 .get_settings = rtl8139_get_settings,
2448 .set_settings = rtl8139_set_settings,
2449 .get_regs_len = rtl8139_get_regs_len,
2450 .get_regs = rtl8139_get_regs,
2451 .nway_reset = rtl8139_nway_reset,
2452 .get_link = rtl8139_get_link,
2453 .get_msglevel = rtl8139_get_msglevel,
2454 .set_msglevel = rtl8139_set_msglevel,
2455 .get_wol = rtl8139_get_wol,
2456 .set_wol = rtl8139_set_wol,
2457 .get_strings = rtl8139_get_strings,
2458 .get_sset_count = rtl8139_get_sset_count,
2459 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2462 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2464 struct rtl8139_private *np = netdev_priv(dev);
2467 if (!netif_running(dev))
2470 spin_lock_irq(&np->lock);
2471 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2472 spin_unlock_irq(&np->lock);
2478 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2480 struct rtl8139_private *tp = netdev_priv(dev);
2481 void __iomem *ioaddr = tp->mmio_addr;
2482 unsigned long flags;
2484 if (netif_running(dev)) {
2485 spin_lock_irqsave (&tp->lock, flags);
2486 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2487 RTL_W32 (RxMissed, 0);
2488 spin_unlock_irqrestore (&tp->lock, flags);
2494 /* Set or clear the multicast filter for this adaptor.
2495 This routine is not state sensitive and need not be SMP locked. */
2497 static void __set_rx_mode (struct net_device *dev)
2499 struct rtl8139_private *tp = netdev_priv(dev);
2500 void __iomem *ioaddr = tp->mmio_addr;
2501 u32 mc_filter[2]; /* Multicast hash filter */
2505 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2506 dev->name, dev->flags, RTL_R32 (RxConfig));
2508 /* Note: do not reorder, GCC is clever about common statements. */
2509 if (dev->flags & IFF_PROMISC) {
2511 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2513 mc_filter[1] = mc_filter[0] = 0xffffffff;
2514 } else if ((dev->mc_count > multicast_filter_limit)
2515 || (dev->flags & IFF_ALLMULTI)) {
2516 /* Too many to filter perfectly -- accept all multicasts. */
2517 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2518 mc_filter[1] = mc_filter[0] = 0xffffffff;
2520 struct dev_mc_list *mclist;
2521 rx_mode = AcceptBroadcast | AcceptMyPhys;
2522 mc_filter[1] = mc_filter[0] = 0;
2523 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2524 i++, mclist = mclist->next) {
2525 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2527 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2528 rx_mode |= AcceptMulticast;
2532 /* We can safely update without stopping the chip. */
2533 tmp = rtl8139_rx_config | rx_mode;
2534 if (tp->rx_config != tmp) {
2535 RTL_W32_F (RxConfig, tmp);
2536 tp->rx_config = tmp;
2538 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2539 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2542 static void rtl8139_set_rx_mode (struct net_device *dev)
2544 unsigned long flags;
2545 struct rtl8139_private *tp = netdev_priv(dev);
2547 spin_lock_irqsave (&tp->lock, flags);
2549 spin_unlock_irqrestore (&tp->lock, flags);
2554 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2556 struct net_device *dev = pci_get_drvdata (pdev);
2557 struct rtl8139_private *tp = netdev_priv(dev);
2558 void __iomem *ioaddr = tp->mmio_addr;
2559 unsigned long flags;
2561 pci_save_state (pdev);
2563 if (!netif_running (dev))
2566 netif_device_detach (dev);
2568 spin_lock_irqsave (&tp->lock, flags);
2570 /* Disable interrupts, stop Tx and Rx. */
2571 RTL_W16 (IntrMask, 0);
2572 RTL_W8 (ChipCmd, 0);
2574 /* Update the error counts. */
2575 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2576 RTL_W32 (RxMissed, 0);
2578 spin_unlock_irqrestore (&tp->lock, flags);
2580 pci_set_power_state (pdev, PCI_D3hot);
2586 static int rtl8139_resume (struct pci_dev *pdev)
2588 struct net_device *dev = pci_get_drvdata (pdev);
2590 pci_restore_state (pdev);
2591 if (!netif_running (dev))
2593 pci_set_power_state (pdev, PCI_D0);
2594 rtl8139_init_ring (dev);
2595 rtl8139_hw_start (dev);
2596 netif_device_attach (dev);
2600 #endif /* CONFIG_PM */
2603 static struct pci_driver rtl8139_pci_driver = {
2605 .id_table = rtl8139_pci_tbl,
2606 .probe = rtl8139_init_one,
2607 .remove = __devexit_p(rtl8139_remove_one),
2609 .suspend = rtl8139_suspend,
2610 .resume = rtl8139_resume,
2611 #endif /* CONFIG_PM */
2615 static int __init rtl8139_init_module (void)
2617 /* when we're a module, we always print a version message,
2618 * even if no 8139 board is found.
2621 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2624 return pci_register_driver(&rtl8139_pci_driver);
2628 static void __exit rtl8139_cleanup_module (void)
2630 pci_unregister_driver (&rtl8139_pci_driver);
2634 module_init(rtl8139_init_module);
2635 module_exit(rtl8139_cleanup_module);