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
129 #ifdef RTL8139_NDEBUG
130 # define assert(expr) do {} while (0)
132 # define assert(expr) \
133 if(unlikely(!(expr))) { \
134 pr_err("Assertion failed! %s,%s,%s,line=%d\n", \
135 #expr, __FILE__, __func__, __LINE__); \
140 /* A few user-configurable values. */
143 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
144 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
146 /* Whether to use MMIO or PIO. Default to MMIO. */
147 #ifdef CONFIG_8139TOO_PIO
148 static int use_io = 1;
150 static int use_io = 0;
153 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
154 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
155 static int multicast_filter_limit = 32;
157 /* bitmapped message enable number */
158 static int debug = -1;
162 * Warning: 64K ring has hardware issues and may lock up.
164 #if defined(CONFIG_SH_DREAMCAST)
165 #define RX_BUF_IDX 0 /* 8K ring */
167 #define RX_BUF_IDX 2 /* 32K ring */
169 #define RX_BUF_LEN (8192 << RX_BUF_IDX)
170 #define RX_BUF_PAD 16
171 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
173 #if RX_BUF_LEN == 65536
174 #define RX_BUF_TOT_LEN RX_BUF_LEN
176 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
179 /* Number of Tx descriptor registers. */
180 #define NUM_TX_DESC 4
182 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
183 #define MAX_ETH_FRAME_SIZE 1536
185 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
186 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
187 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
189 /* PCI Tuning Parameters
190 Threshold is bytes transferred to chip before transmission starts. */
191 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
193 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
194 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
195 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */
196 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
197 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */
199 /* Operational parameters that usually are not changed. */
200 /* Time in jiffies before concluding the transmitter is hung. */
201 #define TX_TIMEOUT (6*HZ)
205 HAS_MII_XCVR = 0x010000,
206 HAS_CHIP_XCVR = 0x020000,
207 HAS_LNK_CHNG = 0x040000,
210 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */
211 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */
212 #define RTL_MIN_IO_SIZE 0x80
213 #define RTL8139B_IO_SIZE 256
215 #define RTL8129_CAPS HAS_MII_XCVR
216 #define RTL8139_CAPS (HAS_CHIP_XCVR|HAS_LNK_CHNG)
224 /* indexed by board_t, above */
225 static const struct {
228 } board_info[] __devinitdata = {
229 { "RealTek RTL8139", RTL8139_CAPS },
230 { "RealTek RTL8129", RTL8129_CAPS },
234 static struct pci_device_id rtl8139_pci_tbl[] = {
235 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
236 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
237 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
238 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
239 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
240 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
241 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
242 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
243 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
244 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
245 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
246 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
247 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
248 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
249 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
250 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
251 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
252 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
253 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
255 #ifdef CONFIG_SH_SECUREEDGE5410
256 /* Bogus 8139 silicon reports 8129 without external PROM :-( */
257 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
259 #ifdef CONFIG_8139TOO_8129
260 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 },
263 /* some crazy cards report invalid vendor ids like
264 * 0x0001 here. The other ids are valid and constant,
265 * so we simply don't match on the main vendor id.
267 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 },
268 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 },
269 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 },
273 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl);
276 const char str[ETH_GSTRING_LEN];
277 } ethtool_stats_keys[] = {
281 { "rx_lost_in_ring" },
284 /* The rest of these values should never change. */
286 /* Symbolic offsets to registers. */
287 enum RTL8139_registers {
288 MAC0 = 0, /* Ethernet hardware address. */
289 MAR0 = 8, /* Multicast filter. */
290 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
291 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
300 Timer = 0x48, /* A general-purpose counter. */
301 RxMissed = 0x4C, /* 24 bits valid, write clears. */
308 Config4 = 0x5A, /* absent on RTL-8139A */
312 BasicModeCtrl = 0x62,
313 BasicModeStatus = 0x64,
316 NWayExpansion = 0x6A,
317 /* Undocumented registers, but required for proper operation. */
318 FIFOTMS = 0x70, /* FIFO Control and test. */
319 CSCR = 0x74, /* Chip Status and Configuration Register. */
321 FlashReg = 0xD4, /* Communication with Flash ROM, four bytes. */
322 PARA7c = 0x7c, /* Magic transceiver parameter register. */
323 Config5 = 0xD8, /* absent on RTL-8139A */
327 MultiIntrClear = 0xF000,
329 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
339 /* Interrupt register bits, using my own meaningful names. */
340 enum IntrStatusBits {
351 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
358 TxOutOfWindow = 0x20000000,
359 TxAborted = 0x40000000,
360 TxCarrierLost = 0x80000000,
363 RxMulticast = 0x8000,
365 RxBroadcast = 0x2000,
366 RxBadSymbol = 0x0020,
374 /* Bits in RxConfig. */
378 AcceptBroadcast = 0x08,
379 AcceptMulticast = 0x04,
381 AcceptAllPhys = 0x01,
384 /* Bits in TxConfig. */
385 enum tx_config_bits {
386 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
388 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
389 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
390 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
391 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
393 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
394 TxCRC = (1 << 16), /* DISABLE Tx pkt CRC append */
395 TxClearAbt = (1 << 0), /* Clear abort (WO) */
396 TxDMAShift = 8, /* DMA burst value (0-7) is shifted X many bits */
397 TxRetryShift = 4, /* TXRR value (0-15) is shifted X many bits */
399 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
402 /* Bits in Config1 */
404 Cfg1_PM_Enable = 0x01,
405 Cfg1_VPD_Enable = 0x02,
408 LWAKE = 0x10, /* not on 8139, 8139A */
409 Cfg1_Driver_Load = 0x20,
412 SLEEP = (1 << 1), /* only on 8139, 8139A */
413 PWRDN = (1 << 0), /* only on 8139, 8139A */
416 /* Bits in Config3 */
418 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
419 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
420 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
421 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
422 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
423 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
424 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
425 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
428 /* Bits in Config4 */
430 LWPTN = (1 << 2), /* not on 8139, 8139A */
433 /* Bits in Config5 */
435 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
436 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
437 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
438 Cfg5_FIFOAddrPtr= (1 << 3), /* Realtek internal SRAM testing */
439 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
440 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
441 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
445 /* rx fifo threshold */
447 RxCfgFIFONone = (7 << RxCfgFIFOShift),
451 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
453 /* rx ring buffer length */
455 RxCfgRcv16K = (1 << 11),
456 RxCfgRcv32K = (1 << 12),
457 RxCfgRcv64K = (1 << 11) | (1 << 12),
459 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
463 /* Twister tuning parameters from RealTek.
464 Completely undocumented, but required to tune bad links on some boards. */
466 CSCR_LinkOKBit = 0x0400,
467 CSCR_LinkChangeBit = 0x0800,
468 CSCR_LinkStatusBits = 0x0f000,
469 CSCR_LinkDownOffCmd = 0x003c0,
470 CSCR_LinkDownCmd = 0x0f3c0,
475 Cfg9346_Unlock = 0xC0,
492 HasHltClk = (1 << 0),
496 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
497 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
498 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
500 /* directly indexed by chip_t, above */
501 static const struct {
503 u32 version; /* from RTL8139C/RTL8139D docs */
505 } rtl_chip_info[] = {
507 HW_REVID(1, 0, 0, 0, 0, 0, 0),
512 HW_REVID(1, 1, 0, 0, 0, 0, 0),
517 HW_REVID(1, 1, 1, 0, 0, 0, 0),
518 HasHltClk, /* XXX undocumented? */
522 HW_REVID(1, 1, 1, 0, 0, 1, 0),
523 HasHltClk, /* XXX undocumented? */
527 HW_REVID(1, 1, 1, 1, 0, 0, 0),
532 HW_REVID(1, 1, 1, 1, 1, 0, 0),
537 HW_REVID(1, 1, 1, 0, 1, 0, 0),
542 HW_REVID(1, 1, 1, 1, 0, 1, 0),
547 HW_REVID(1, 1, 1, 0, 1, 0, 1),
548 HasHltClk /* XXX undocumented? */
553 HW_REVID(1, 1, 1, 0, 1, 1, 1),
558 struct rtl_extra_stats {
559 unsigned long early_rx;
560 unsigned long tx_buf_mapped;
561 unsigned long tx_timeouts;
562 unsigned long rx_lost_in_ring;
565 struct rtl8139_private {
566 void __iomem *mmio_addr;
568 struct pci_dev *pci_dev;
570 struct napi_struct napi;
571 struct net_device *dev;
573 unsigned char *rx_ring;
574 unsigned int cur_rx; /* RX buf index of next pkt */
575 dma_addr_t rx_ring_dma;
577 unsigned int tx_flag;
578 unsigned long cur_tx;
579 unsigned long dirty_tx;
580 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
581 unsigned char *tx_bufs; /* Tx bounce buffer region. */
582 dma_addr_t tx_bufs_dma;
584 signed char phys[4]; /* MII device addresses. */
586 /* Twister tune state. */
587 char twistie, twist_row, twist_col;
589 unsigned int watchdog_fired : 1;
590 unsigned int default_port : 4; /* Last dev->if_port value. */
591 unsigned int have_thread : 1;
598 struct rtl_extra_stats xstats;
600 struct delayed_work thread;
602 struct mii_if_info mii;
603 unsigned int regs_len;
604 unsigned long fifo_copy_timeout;
607 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
608 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
609 MODULE_LICENSE("GPL");
610 MODULE_VERSION(DRV_VERSION);
612 module_param(use_io, int, 0);
613 MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO");
614 module_param(multicast_filter_limit, int, 0);
615 module_param_array(media, int, NULL, 0);
616 module_param_array(full_duplex, int, NULL, 0);
617 module_param(debug, int, 0);
618 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
619 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
620 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
621 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
623 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
624 static int rtl8139_open (struct net_device *dev);
625 static int mdio_read (struct net_device *dev, int phy_id, int location);
626 static void mdio_write (struct net_device *dev, int phy_id, int location,
628 static void rtl8139_start_thread(struct rtl8139_private *tp);
629 static void rtl8139_tx_timeout (struct net_device *dev);
630 static void rtl8139_init_ring (struct net_device *dev);
631 static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb,
632 struct net_device *dev);
633 #ifdef CONFIG_NET_POLL_CONTROLLER
634 static void rtl8139_poll_controller(struct net_device *dev);
636 static int rtl8139_set_mac_address(struct net_device *dev, void *p);
637 static int rtl8139_poll(struct napi_struct *napi, int budget);
638 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance);
639 static int rtl8139_close (struct net_device *dev);
640 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
641 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
642 static void rtl8139_set_rx_mode (struct net_device *dev);
643 static void __set_rx_mode (struct net_device *dev);
644 static void rtl8139_hw_start (struct net_device *dev);
645 static void rtl8139_thread (struct work_struct *work);
646 static void rtl8139_tx_timeout_task(struct work_struct *work);
647 static const struct ethtool_ops rtl8139_ethtool_ops;
649 /* write MMIO register, with flush */
650 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
651 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
652 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
653 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
655 /* write MMIO register */
656 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
657 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
658 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
660 /* read MMIO register */
661 #define RTL_R8(reg) ioread8 (ioaddr + (reg))
662 #define RTL_R16(reg) ioread16 (ioaddr + (reg))
663 #define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
666 static const u16 rtl8139_intr_mask =
667 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
668 TxErr | TxOK | RxErr | RxOK;
670 static const u16 rtl8139_norx_intr_mask =
671 PCIErr | PCSTimeout | RxUnderrun |
672 TxErr | TxOK | RxErr ;
675 static const unsigned int rtl8139_rx_config =
676 RxCfgRcv8K | RxNoWrap |
677 (RX_FIFO_THRESH << RxCfgFIFOShift) |
678 (RX_DMA_BURST << RxCfgDMAShift);
679 #elif RX_BUF_IDX == 1
680 static const unsigned int rtl8139_rx_config =
681 RxCfgRcv16K | RxNoWrap |
682 (RX_FIFO_THRESH << RxCfgFIFOShift) |
683 (RX_DMA_BURST << RxCfgDMAShift);
684 #elif RX_BUF_IDX == 2
685 static const unsigned int rtl8139_rx_config =
686 RxCfgRcv32K | RxNoWrap |
687 (RX_FIFO_THRESH << RxCfgFIFOShift) |
688 (RX_DMA_BURST << RxCfgDMAShift);
689 #elif RX_BUF_IDX == 3
690 static const unsigned int rtl8139_rx_config =
692 (RX_FIFO_THRESH << RxCfgFIFOShift) |
693 (RX_DMA_BURST << RxCfgDMAShift);
695 #error "Invalid configuration for 8139_RXBUF_IDX"
698 static const unsigned int rtl8139_tx_config =
699 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
701 static void __rtl8139_cleanup_dev (struct net_device *dev)
703 struct rtl8139_private *tp = netdev_priv(dev);
704 struct pci_dev *pdev;
706 assert (dev != NULL);
707 assert (tp->pci_dev != NULL);
711 pci_iounmap (pdev, tp->mmio_addr);
713 /* it's ok to call this even if we have no regions to free */
714 pci_release_regions (pdev);
717 pci_set_drvdata (pdev, NULL);
721 static void rtl8139_chip_reset (void __iomem *ioaddr)
725 /* Soft reset the chip. */
726 RTL_W8 (ChipCmd, CmdReset);
728 /* Check that the chip has finished the reset. */
729 for (i = 1000; i > 0; i--) {
731 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
738 static __devinit struct net_device * rtl8139_init_board (struct pci_dev *pdev)
740 void __iomem *ioaddr;
741 struct net_device *dev;
742 struct rtl8139_private *tp;
744 int rc, disable_dev_on_err = 0;
746 unsigned long pio_start, pio_end, pio_flags, pio_len;
747 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
750 assert (pdev != NULL);
752 /* dev and priv zeroed in alloc_etherdev */
753 dev = alloc_etherdev (sizeof (*tp));
755 dev_err(&pdev->dev, "Unable to alloc new net device\n");
756 return ERR_PTR(-ENOMEM);
758 SET_NETDEV_DEV(dev, &pdev->dev);
760 tp = netdev_priv(dev);
763 /* enable device (incl. PCI PM wakeup and hotplug setup) */
764 rc = pci_enable_device (pdev);
768 pio_start = pci_resource_start (pdev, 0);
769 pio_end = pci_resource_end (pdev, 0);
770 pio_flags = pci_resource_flags (pdev, 0);
771 pio_len = pci_resource_len (pdev, 0);
773 mmio_start = pci_resource_start (pdev, 1);
774 mmio_end = pci_resource_end (pdev, 1);
775 mmio_flags = pci_resource_flags (pdev, 1);
776 mmio_len = pci_resource_len (pdev, 1);
778 /* set this immediately, we need to know before
779 * we talk to the chip directly */
780 pr_debug("PIO region size == 0x%02lX\n", pio_len);
781 pr_debug("MMIO region size == 0x%02lX\n", mmio_len);
785 /* make sure PCI base addr 0 is PIO */
786 if (!(pio_flags & IORESOURCE_IO)) {
787 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
791 /* check for weird/broken PCI region reporting */
792 if (pio_len < RTL_MIN_IO_SIZE) {
793 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
798 /* make sure PCI base addr 1 is MMIO */
799 if (!(mmio_flags & IORESOURCE_MEM)) {
800 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
804 if (mmio_len < RTL_MIN_IO_SIZE) {
805 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
811 rc = pci_request_regions (pdev, DRV_NAME);
814 disable_dev_on_err = 1;
816 /* enable PCI bus-mastering */
817 pci_set_master (pdev);
820 ioaddr = pci_iomap(pdev, 0, 0);
822 dev_err(&pdev->dev, "cannot map PIO, aborting\n");
826 dev->base_addr = pio_start;
827 tp->regs_len = pio_len;
829 /* ioremap MMIO region */
830 ioaddr = pci_iomap(pdev, 1, 0);
831 if (ioaddr == NULL) {
832 dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n");
833 pci_release_regions(pdev);
837 dev->base_addr = (long) ioaddr;
838 tp->regs_len = mmio_len;
840 tp->mmio_addr = ioaddr;
842 /* Bring old chips out of low-power mode. */
843 RTL_W8 (HltClk, 'R');
845 /* check for missing/broken hardware */
846 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
847 dev_err(&pdev->dev, "Chip not responding, ignoring board\n");
852 /* identify chip attached to board */
853 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
854 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
855 if (version == rtl_chip_info[i].version) {
860 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
861 dev_dbg(&pdev->dev, "unknown chip version, assuming RTL-8139\n");
862 dev_dbg(&pdev->dev, "TxConfig = 0x%lx\n", RTL_R32 (TxConfig));
866 pr_debug("chipset id (%d) == index %d, '%s'\n",
867 version, i, rtl_chip_info[i].name);
869 if (tp->chipset >= CH_8139B) {
870 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
871 pr_debug("PCI PM wakeup\n");
872 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
875 new_tmp8 |= Cfg1_PM_Enable;
876 if (new_tmp8 != tmp8) {
877 RTL_W8 (Cfg9346, Cfg9346_Unlock);
878 RTL_W8 (Config1, tmp8);
879 RTL_W8 (Cfg9346, Cfg9346_Lock);
881 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
882 tmp8 = RTL_R8 (Config4);
884 RTL_W8 (Cfg9346, Cfg9346_Unlock);
885 RTL_W8 (Config4, tmp8 & ~LWPTN);
886 RTL_W8 (Cfg9346, Cfg9346_Lock);
890 pr_debug("Old chip wakeup\n");
891 tmp8 = RTL_R8 (Config1);
892 tmp8 &= ~(SLEEP | PWRDN);
893 RTL_W8 (Config1, tmp8);
896 rtl8139_chip_reset (ioaddr);
901 __rtl8139_cleanup_dev (dev);
902 if (disable_dev_on_err)
903 pci_disable_device (pdev);
907 static const struct net_device_ops rtl8139_netdev_ops = {
908 .ndo_open = rtl8139_open,
909 .ndo_stop = rtl8139_close,
910 .ndo_get_stats = rtl8139_get_stats,
911 .ndo_change_mtu = eth_change_mtu,
912 .ndo_validate_addr = eth_validate_addr,
913 .ndo_set_mac_address = rtl8139_set_mac_address,
914 .ndo_start_xmit = rtl8139_start_xmit,
915 .ndo_set_multicast_list = rtl8139_set_rx_mode,
916 .ndo_do_ioctl = netdev_ioctl,
917 .ndo_tx_timeout = rtl8139_tx_timeout,
918 #ifdef CONFIG_NET_POLL_CONTROLLER
919 .ndo_poll_controller = rtl8139_poll_controller,
923 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
924 const struct pci_device_id *ent)
926 struct net_device *dev = NULL;
927 struct rtl8139_private *tp;
928 int i, addr_len, option;
929 void __iomem *ioaddr;
930 static int board_idx = -1;
932 assert (pdev != NULL);
933 assert (ent != NULL);
937 /* when we're built into the kernel, the driver version message
938 * is only printed if at least one 8139 board has been found
942 static int printed_version;
943 if (!printed_version++)
944 pr_info(RTL8139_DRIVER_NAME "\n");
948 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
949 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
951 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip, use 8139cp\n",
952 pdev->vendor, pdev->device, pdev->revision);
956 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
957 pdev->device == PCI_DEVICE_ID_REALTEK_8139 &&
958 pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS &&
959 pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) {
960 pr_info("8139too: OQO Model 2 detected. Forcing PIO\n");
964 dev = rtl8139_init_board (pdev);
968 assert (dev != NULL);
969 tp = netdev_priv(dev);
972 ioaddr = tp->mmio_addr;
973 assert (ioaddr != NULL);
975 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
976 for (i = 0; i < 3; i++)
977 ((__le16 *) (dev->dev_addr))[i] =
978 cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len));
979 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
981 /* The Rtl8139-specific entries in the device structure. */
982 dev->netdev_ops = &rtl8139_netdev_ops;
983 dev->ethtool_ops = &rtl8139_ethtool_ops;
984 dev->watchdog_timeo = TX_TIMEOUT;
985 netif_napi_add(dev, &tp->napi, rtl8139_poll, 64);
987 /* note: the hardware is not capable of sg/csum/highdma, however
988 * through the use of skb_copy_and_csum_dev we enable these
991 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
993 dev->irq = pdev->irq;
995 /* tp zeroed and aligned in alloc_etherdev */
996 tp = netdev_priv(dev);
998 /* note: tp->chipset set in rtl8139_init_board */
999 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1000 tp->mmio_addr = ioaddr;
1002 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1003 spin_lock_init (&tp->lock);
1004 spin_lock_init (&tp->rx_lock);
1005 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1007 tp->mii.mdio_read = mdio_read;
1008 tp->mii.mdio_write = mdio_write;
1009 tp->mii.phy_id_mask = 0x3f;
1010 tp->mii.reg_num_mask = 0x1f;
1012 /* dev is fully set up and ready to use now */
1013 pr_debug("about to register device named %s (%p)...\n", dev->name, dev);
1014 i = register_netdev (dev);
1015 if (i) goto err_out;
1017 pci_set_drvdata (pdev, dev);
1019 pr_info("%s: %s at 0x%lx, %pM, IRQ %d\n",
1021 board_info[ent->driver_data].name,
1026 pr_debug("%s: Identified 8139 chip type '%s'\n",
1027 dev->name, rtl_chip_info[tp->chipset].name);
1029 /* Find the connected MII xcvrs.
1030 Doing this in open() would allow detecting external xcvrs later, but
1031 takes too much time. */
1032 #ifdef CONFIG_8139TOO_8129
1033 if (tp->drv_flags & HAS_MII_XCVR) {
1034 int phy, phy_idx = 0;
1035 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1036 int mii_status = mdio_read(dev, phy, 1);
1037 if (mii_status != 0xffff && mii_status != 0x0000) {
1038 u16 advertising = mdio_read(dev, phy, 4);
1039 tp->phys[phy_idx++] = phy;
1040 pr_info("%s: MII transceiver %d status 0x%4.4x advertising %4.4x.\n",
1041 dev->name, phy, mii_status, advertising);
1045 pr_info("%s: No MII transceivers found! Assuming SYM transceiver.\n",
1052 tp->mii.phy_id = tp->phys[0];
1054 /* The lower four bits are the media type. */
1055 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1057 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1058 tp->default_port = option & 0xFF;
1059 if (tp->default_port)
1060 tp->mii.force_media = 1;
1062 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1063 tp->mii.full_duplex = full_duplex[board_idx];
1064 if (tp->mii.full_duplex) {
1065 pr_info("%s: Media type forced to Full Duplex.\n", dev->name);
1066 /* Changing the MII-advertised media because might prevent
1068 tp->mii.force_media = 1;
1070 if (tp->default_port) {
1071 pr_info(" Forcing %dMbps %s-duplex operation.\n",
1072 (option & 0x20 ? 100 : 10),
1073 (option & 0x10 ? "full" : "half"));
1074 mdio_write(dev, tp->phys[0], 0,
1075 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1076 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1079 /* Put the chip into low-power mode. */
1080 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1081 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1086 __rtl8139_cleanup_dev (dev);
1087 pci_disable_device (pdev);
1092 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1094 struct net_device *dev = pci_get_drvdata (pdev);
1096 assert (dev != NULL);
1098 flush_scheduled_work();
1100 unregister_netdev (dev);
1102 __rtl8139_cleanup_dev (dev);
1103 pci_disable_device (pdev);
1107 /* Serial EEPROM section. */
1109 /* EEPROM_Ctrl bits. */
1110 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1111 #define EE_CS 0x08 /* EEPROM chip select. */
1112 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1113 #define EE_WRITE_0 0x00
1114 #define EE_WRITE_1 0x02
1115 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1116 #define EE_ENB (0x80 | EE_CS)
1118 /* Delay between EEPROM clock transitions.
1119 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1122 #define eeprom_delay() (void)RTL_R32(Cfg9346)
1124 /* The EEPROM commands include the alway-set leading bit. */
1125 #define EE_WRITE_CMD (5)
1126 #define EE_READ_CMD (6)
1127 #define EE_ERASE_CMD (7)
1129 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1132 unsigned retval = 0;
1133 int read_cmd = location | (EE_READ_CMD << addr_len);
1135 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1136 RTL_W8 (Cfg9346, EE_ENB);
1139 /* Shift the read command bits out. */
1140 for (i = 4 + addr_len; i >= 0; i--) {
1141 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1142 RTL_W8 (Cfg9346, EE_ENB | dataval);
1144 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1147 RTL_W8 (Cfg9346, EE_ENB);
1150 for (i = 16; i > 0; i--) {
1151 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1154 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1156 RTL_W8 (Cfg9346, EE_ENB);
1160 /* Terminate the EEPROM access. */
1161 RTL_W8 (Cfg9346, ~EE_CS);
1167 /* MII serial management: mostly bogus for now. */
1168 /* Read and write the MII management registers using software-generated
1169 serial MDIO protocol.
1170 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1171 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1172 "overclocking" issues. */
1173 #define MDIO_DIR 0x80
1174 #define MDIO_DATA_OUT 0x04
1175 #define MDIO_DATA_IN 0x02
1176 #define MDIO_CLK 0x01
1177 #define MDIO_WRITE0 (MDIO_DIR)
1178 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1180 #define mdio_delay() RTL_R8(Config4)
1183 static const char mii_2_8139_map[8] = {
1195 #ifdef CONFIG_8139TOO_8129
1196 /* Syncronize the MII management interface by shifting 32 one bits out. */
1197 static void mdio_sync (void __iomem *ioaddr)
1201 for (i = 32; i >= 0; i--) {
1202 RTL_W8 (Config4, MDIO_WRITE1);
1204 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1210 static int mdio_read (struct net_device *dev, int phy_id, int location)
1212 struct rtl8139_private *tp = netdev_priv(dev);
1214 #ifdef CONFIG_8139TOO_8129
1215 void __iomem *ioaddr = tp->mmio_addr;
1216 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1220 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1221 void __iomem *ioaddr = tp->mmio_addr;
1222 return location < 8 && mii_2_8139_map[location] ?
1223 RTL_R16 (mii_2_8139_map[location]) : 0;
1226 #ifdef CONFIG_8139TOO_8129
1228 /* Shift the read command bits out. */
1229 for (i = 15; i >= 0; i--) {
1230 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1232 RTL_W8 (Config4, MDIO_DIR | dataval);
1234 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1238 /* Read the two transition, 16 data, and wire-idle bits. */
1239 for (i = 19; i > 0; i--) {
1240 RTL_W8 (Config4, 0);
1242 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1243 RTL_W8 (Config4, MDIO_CLK);
1248 return (retval >> 1) & 0xffff;
1252 static void mdio_write (struct net_device *dev, int phy_id, int location,
1255 struct rtl8139_private *tp = netdev_priv(dev);
1256 #ifdef CONFIG_8139TOO_8129
1257 void __iomem *ioaddr = tp->mmio_addr;
1258 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1262 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1263 void __iomem *ioaddr = tp->mmio_addr;
1264 if (location == 0) {
1265 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1266 RTL_W16 (BasicModeCtrl, value);
1267 RTL_W8 (Cfg9346, Cfg9346_Lock);
1268 } else if (location < 8 && mii_2_8139_map[location])
1269 RTL_W16 (mii_2_8139_map[location], value);
1273 #ifdef CONFIG_8139TOO_8129
1276 /* Shift the command bits out. */
1277 for (i = 31; i >= 0; i--) {
1279 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1280 RTL_W8 (Config4, dataval);
1282 RTL_W8 (Config4, dataval | MDIO_CLK);
1285 /* Clear out extra bits. */
1286 for (i = 2; i > 0; i--) {
1287 RTL_W8 (Config4, 0);
1289 RTL_W8 (Config4, MDIO_CLK);
1296 static int rtl8139_open (struct net_device *dev)
1298 struct rtl8139_private *tp = netdev_priv(dev);
1300 void __iomem *ioaddr = tp->mmio_addr;
1302 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev);
1306 tp->tx_bufs = dma_alloc_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1307 &tp->tx_bufs_dma, GFP_KERNEL);
1308 tp->rx_ring = dma_alloc_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1309 &tp->rx_ring_dma, GFP_KERNEL);
1310 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1311 free_irq(dev->irq, dev);
1314 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1315 tp->tx_bufs, tp->tx_bufs_dma);
1317 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1318 tp->rx_ring, tp->rx_ring_dma);
1324 napi_enable(&tp->napi);
1326 tp->mii.full_duplex = tp->mii.force_media;
1327 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1329 rtl8139_init_ring (dev);
1330 rtl8139_hw_start (dev);
1331 netif_start_queue (dev);
1333 if (netif_msg_ifup(tp))
1334 pr_debug("%s: rtl8139_open() ioaddr %#llx IRQ %d"
1335 " GP Pins %2.2x %s-duplex.\n", dev->name,
1336 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1337 dev->irq, RTL_R8 (MediaStatus),
1338 tp->mii.full_duplex ? "full" : "half");
1340 rtl8139_start_thread(tp);
1346 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1348 struct rtl8139_private *tp = netdev_priv(dev);
1350 if (tp->phys[0] >= 0) {
1351 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1355 /* Start the hardware at open or resume. */
1356 static void rtl8139_hw_start (struct net_device *dev)
1358 struct rtl8139_private *tp = netdev_priv(dev);
1359 void __iomem *ioaddr = tp->mmio_addr;
1363 /* Bring old chips out of low-power mode. */
1364 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1365 RTL_W8 (HltClk, 'R');
1367 rtl8139_chip_reset (ioaddr);
1369 /* unlock Config[01234] and BMCR register writes */
1370 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1371 /* Restore our idea of the MAC address. */
1372 RTL_W32_F (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
1373 RTL_W32_F (MAC0 + 4, le16_to_cpu (*(__le16 *) (dev->dev_addr + 4)));
1377 /* init Rx ring buffer DMA address */
1378 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1380 /* Must enable Tx/Rx before setting transfer thresholds! */
1381 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1383 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1384 RTL_W32 (RxConfig, tp->rx_config);
1385 RTL_W32 (TxConfig, rtl8139_tx_config);
1387 rtl_check_media (dev, 1);
1389 if (tp->chipset >= CH_8139B) {
1390 /* Disable magic packet scanning, which is enabled
1391 * when PM is enabled in Config1. It can be reenabled
1392 * via ETHTOOL_SWOL if desired. */
1393 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1396 pr_debug("init buffer addresses\n");
1398 /* Lock Config[01234] and BMCR register writes */
1399 RTL_W8 (Cfg9346, Cfg9346_Lock);
1401 /* init Tx buffer DMA addresses */
1402 for (i = 0; i < NUM_TX_DESC; i++)
1403 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1405 RTL_W32 (RxMissed, 0);
1407 rtl8139_set_rx_mode (dev);
1409 /* no early-rx interrupts */
1410 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1412 /* make sure RxTx has started */
1413 tmp = RTL_R8 (ChipCmd);
1414 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1415 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1417 /* Enable all known interrupts by setting the interrupt mask. */
1418 RTL_W16 (IntrMask, rtl8139_intr_mask);
1422 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1423 static void rtl8139_init_ring (struct net_device *dev)
1425 struct rtl8139_private *tp = netdev_priv(dev);
1432 for (i = 0; i < NUM_TX_DESC; i++)
1433 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1437 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1438 static int next_tick = 3 * HZ;
1440 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1441 static inline void rtl8139_tune_twister (struct net_device *dev,
1442 struct rtl8139_private *tp) {}
1444 enum TwisterParamVals {
1445 PARA78_default = 0x78fa8388,
1446 PARA7c_default = 0xcb38de43, /* param[0][3] */
1447 PARA7c_xxx = 0xcb38de43,
1450 static const unsigned long param[4][4] = {
1451 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1452 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1453 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1454 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1457 static void rtl8139_tune_twister (struct net_device *dev,
1458 struct rtl8139_private *tp)
1461 void __iomem *ioaddr = tp->mmio_addr;
1463 /* This is a complicated state machine to configure the "twister" for
1464 impedance/echos based on the cable length.
1465 All of this is magic and undocumented.
1467 switch (tp->twistie) {
1469 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1470 /* We have link beat, let us tune the twister. */
1471 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1472 tp->twistie = 2; /* Change to state 2. */
1473 next_tick = HZ / 10;
1475 /* Just put in some reasonable defaults for when beat returns. */
1476 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1477 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1478 RTL_W32 (PARA78, PARA78_default);
1479 RTL_W32 (PARA7c, PARA7c_default);
1480 tp->twistie = 0; /* Bail from future actions. */
1484 /* Read how long it took to hear the echo. */
1485 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1486 if (linkcase == 0x7000)
1488 else if (linkcase == 0x3000)
1490 else if (linkcase == 0x1000)
1495 tp->twistie = 3; /* Change to state 2. */
1496 next_tick = HZ / 10;
1499 /* Put out four tuning parameters, one per 100msec. */
1500 if (tp->twist_col == 0)
1501 RTL_W16 (FIFOTMS, 0);
1502 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1503 [(int) tp->twist_col]);
1504 next_tick = HZ / 10;
1505 if (++tp->twist_col >= 4) {
1506 /* For short cables we are done.
1507 For long cables (row == 3) check for mistune. */
1509 (tp->twist_row == 3) ? 4 : 0;
1513 /* Special case for long cables: check for mistune. */
1514 if ((RTL_R16 (CSCR) &
1515 CSCR_LinkStatusBits) == 0x7000) {
1519 RTL_W32 (PARA7c, 0xfb38de03);
1521 next_tick = HZ / 10;
1525 /* Retune for shorter cable (column 2). */
1526 RTL_W32 (FIFOTMS, 0x20);
1527 RTL_W32 (PARA78, PARA78_default);
1528 RTL_W32 (PARA7c, PARA7c_default);
1529 RTL_W32 (FIFOTMS, 0x00);
1533 next_tick = HZ / 10;
1541 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1543 static inline void rtl8139_thread_iter (struct net_device *dev,
1544 struct rtl8139_private *tp,
1545 void __iomem *ioaddr)
1549 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1551 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1552 int duplex = (mii_lpa & LPA_100FULL)
1553 || (mii_lpa & 0x01C0) == 0x0040;
1554 if (tp->mii.full_duplex != duplex) {
1555 tp->mii.full_duplex = duplex;
1558 pr_info("%s: Setting %s-duplex based on MII #%d link"
1559 " partner ability of %4.4x.\n",
1561 tp->mii.full_duplex ? "full" : "half",
1562 tp->phys[0], mii_lpa);
1564 pr_info("%s: media is unconnected, link down, or incompatible connection\n",
1568 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1569 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1570 RTL_W8 (Cfg9346, Cfg9346_Lock);
1575 next_tick = HZ * 60;
1577 rtl8139_tune_twister (dev, tp);
1579 pr_debug("%s: Media selection tick, Link partner %4.4x.\n",
1580 dev->name, RTL_R16 (NWayLPAR));
1581 pr_debug("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1582 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1583 pr_debug("%s: Chip config %2.2x %2.2x.\n",
1584 dev->name, RTL_R8 (Config0),
1588 static void rtl8139_thread (struct work_struct *work)
1590 struct rtl8139_private *tp =
1591 container_of(work, struct rtl8139_private, thread.work);
1592 struct net_device *dev = tp->mii.dev;
1593 unsigned long thr_delay = next_tick;
1597 if (!netif_running(dev))
1600 if (tp->watchdog_fired) {
1601 tp->watchdog_fired = 0;
1602 rtl8139_tx_timeout_task(work);
1604 rtl8139_thread_iter(dev, tp, tp->mmio_addr);
1606 if (tp->have_thread)
1607 schedule_delayed_work(&tp->thread, thr_delay);
1612 static void rtl8139_start_thread(struct rtl8139_private *tp)
1615 if (tp->chipset == CH_8139_K)
1617 else if (tp->drv_flags & HAS_LNK_CHNG)
1620 tp->have_thread = 1;
1621 tp->watchdog_fired = 0;
1623 schedule_delayed_work(&tp->thread, next_tick);
1626 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1631 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1634 static void rtl8139_tx_timeout_task (struct work_struct *work)
1636 struct rtl8139_private *tp =
1637 container_of(work, struct rtl8139_private, thread.work);
1638 struct net_device *dev = tp->mii.dev;
1639 void __iomem *ioaddr = tp->mmio_addr;
1643 pr_debug("%s: Transmit timeout, status %2.2x %4.4x %4.4x media %2.2x.\n",
1644 dev->name, RTL_R8 (ChipCmd),
1645 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1646 /* Emit info to figure out what went wrong. */
1647 pr_debug("%s: Tx queue start entry %ld dirty entry %ld.\n",
1648 dev->name, tp->cur_tx, tp->dirty_tx);
1649 for (i = 0; i < NUM_TX_DESC; i++)
1650 pr_debug("%s: Tx descriptor %d is %8.8lx.%s\n",
1651 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1652 i == tp->dirty_tx % NUM_TX_DESC ?
1653 " (queue head)" : "");
1655 tp->xstats.tx_timeouts++;
1657 /* disable Tx ASAP, if not already */
1658 tmp8 = RTL_R8 (ChipCmd);
1659 if (tmp8 & CmdTxEnb)
1660 RTL_W8 (ChipCmd, CmdRxEnb);
1662 spin_lock_bh(&tp->rx_lock);
1663 /* Disable interrupts by clearing the interrupt mask. */
1664 RTL_W16 (IntrMask, 0x0000);
1666 /* Stop a shared interrupt from scavenging while we are. */
1667 spin_lock_irq(&tp->lock);
1668 rtl8139_tx_clear (tp);
1669 spin_unlock_irq(&tp->lock);
1671 /* ...and finally, reset everything */
1672 if (netif_running(dev)) {
1673 rtl8139_hw_start (dev);
1674 netif_wake_queue (dev);
1676 spin_unlock_bh(&tp->rx_lock);
1679 static void rtl8139_tx_timeout (struct net_device *dev)
1681 struct rtl8139_private *tp = netdev_priv(dev);
1683 tp->watchdog_fired = 1;
1684 if (!tp->have_thread) {
1685 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1686 schedule_delayed_work(&tp->thread, next_tick);
1690 static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb,
1691 struct net_device *dev)
1693 struct rtl8139_private *tp = netdev_priv(dev);
1694 void __iomem *ioaddr = tp->mmio_addr;
1696 unsigned int len = skb->len;
1697 unsigned long flags;
1699 /* Calculate the next Tx descriptor entry. */
1700 entry = tp->cur_tx % NUM_TX_DESC;
1702 /* Note: the chip doesn't have auto-pad! */
1703 if (likely(len < TX_BUF_SIZE)) {
1705 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1706 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1710 dev->stats.tx_dropped++;
1711 return NETDEV_TX_OK;
1714 spin_lock_irqsave(&tp->lock, flags);
1716 * Writing to TxStatus triggers a DMA transfer of the data
1717 * copied to tp->tx_buf[entry] above. Use a memory barrier
1718 * to make sure that the device sees the updated data.
1721 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1722 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1724 dev->trans_start = jiffies;
1728 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1729 netif_stop_queue (dev);
1730 spin_unlock_irqrestore(&tp->lock, flags);
1732 if (netif_msg_tx_queued(tp))
1733 pr_debug("%s: Queued Tx packet size %u to slot %d.\n",
1734 dev->name, len, entry);
1736 return NETDEV_TX_OK;
1740 static void rtl8139_tx_interrupt (struct net_device *dev,
1741 struct rtl8139_private *tp,
1742 void __iomem *ioaddr)
1744 unsigned long dirty_tx, tx_left;
1746 assert (dev != NULL);
1747 assert (ioaddr != NULL);
1749 dirty_tx = tp->dirty_tx;
1750 tx_left = tp->cur_tx - dirty_tx;
1751 while (tx_left > 0) {
1752 int entry = dirty_tx % NUM_TX_DESC;
1755 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1757 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1758 break; /* It still hasn't been Txed */
1760 /* Note: TxCarrierLost is always asserted at 100mbps. */
1761 if (txstatus & (TxOutOfWindow | TxAborted)) {
1762 /* There was an major error, log it. */
1763 if (netif_msg_tx_err(tp))
1764 pr_debug("%s: Transmit error, Tx status %8.8x.\n",
1765 dev->name, txstatus);
1766 dev->stats.tx_errors++;
1767 if (txstatus & TxAborted) {
1768 dev->stats.tx_aborted_errors++;
1769 RTL_W32 (TxConfig, TxClearAbt);
1770 RTL_W16 (IntrStatus, TxErr);
1773 if (txstatus & TxCarrierLost)
1774 dev->stats.tx_carrier_errors++;
1775 if (txstatus & TxOutOfWindow)
1776 dev->stats.tx_window_errors++;
1778 if (txstatus & TxUnderrun) {
1779 /* Add 64 to the Tx FIFO threshold. */
1780 if (tp->tx_flag < 0x00300000)
1781 tp->tx_flag += 0x00020000;
1782 dev->stats.tx_fifo_errors++;
1784 dev->stats.collisions += (txstatus >> 24) & 15;
1785 dev->stats.tx_bytes += txstatus & 0x7ff;
1786 dev->stats.tx_packets++;
1793 #ifndef RTL8139_NDEBUG
1794 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1795 pr_err("%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1796 dev->name, dirty_tx, tp->cur_tx);
1797 dirty_tx += NUM_TX_DESC;
1799 #endif /* RTL8139_NDEBUG */
1801 /* only wake the queue if we did work, and the queue is stopped */
1802 if (tp->dirty_tx != dirty_tx) {
1803 tp->dirty_tx = dirty_tx;
1805 netif_wake_queue (dev);
1810 /* TODO: clean this up! Rx reset need not be this intensive */
1811 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1812 struct rtl8139_private *tp, void __iomem *ioaddr)
1815 #ifdef CONFIG_8139_OLD_RX_RESET
1819 if (netif_msg_rx_err (tp))
1820 pr_debug("%s: Ethernet frame had errors, status %8.8x.\n",
1821 dev->name, rx_status);
1822 dev->stats.rx_errors++;
1823 if (!(rx_status & RxStatusOK)) {
1824 if (rx_status & RxTooLong) {
1825 pr_debug("%s: Oversized Ethernet frame, status %4.4x!\n",
1826 dev->name, rx_status);
1827 /* A.C.: The chip hangs here. */
1829 if (rx_status & (RxBadSymbol | RxBadAlign))
1830 dev->stats.rx_frame_errors++;
1831 if (rx_status & (RxRunt | RxTooLong))
1832 dev->stats.rx_length_errors++;
1833 if (rx_status & RxCRCErr)
1834 dev->stats.rx_crc_errors++;
1836 tp->xstats.rx_lost_in_ring++;
1839 #ifndef CONFIG_8139_OLD_RX_RESET
1840 tmp8 = RTL_R8 (ChipCmd);
1841 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1842 RTL_W8 (ChipCmd, tmp8);
1843 RTL_W32 (RxConfig, tp->rx_config);
1846 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1848 /* disable receive */
1849 RTL_W8_F (ChipCmd, CmdTxEnb);
1851 while (--tmp_work > 0) {
1853 tmp8 = RTL_R8 (ChipCmd);
1854 if (!(tmp8 & CmdRxEnb))
1858 pr_warning(PFX "rx stop wait too long\n");
1859 /* restart receive */
1861 while (--tmp_work > 0) {
1862 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1864 tmp8 = RTL_R8 (ChipCmd);
1865 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1869 pr_warning(PFX "tx/rx enable wait too long\n");
1871 /* and reinitialize all rx related registers */
1872 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1873 /* Must enable Tx/Rx before setting transfer thresholds! */
1874 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1876 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1877 RTL_W32 (RxConfig, tp->rx_config);
1880 pr_debug("init buffer addresses\n");
1882 /* Lock Config[01234] and BMCR register writes */
1883 RTL_W8 (Cfg9346, Cfg9346_Lock);
1885 /* init Rx ring buffer DMA address */
1886 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1888 /* A.C.: Reset the multicast list. */
1889 __set_rx_mode (dev);
1894 static inline void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1895 u32 offset, unsigned int size)
1897 u32 left = RX_BUF_LEN - offset;
1900 skb_copy_to_linear_data(skb, ring + offset, left);
1901 skb_copy_to_linear_data_offset(skb, left, ring, size - left);
1903 skb_copy_to_linear_data(skb, ring + offset, size);
1907 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1909 void __iomem *ioaddr = tp->mmio_addr;
1912 status = RTL_R16 (IntrStatus) & RxAckBits;
1914 /* Clear out errors and receive interrupts */
1915 if (likely(status != 0)) {
1916 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1917 tp->dev->stats.rx_errors++;
1918 if (status & RxFIFOOver)
1919 tp->dev->stats.rx_fifo_errors++;
1921 RTL_W16_F (IntrStatus, RxAckBits);
1925 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1928 void __iomem *ioaddr = tp->mmio_addr;
1930 unsigned char *rx_ring = tp->rx_ring;
1931 unsigned int cur_rx = tp->cur_rx;
1932 unsigned int rx_size = 0;
1934 pr_debug("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1935 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1936 RTL_R16 (RxBufAddr),
1937 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1939 while (netif_running(dev) && received < budget
1940 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1941 u32 ring_offset = cur_rx % RX_BUF_LEN;
1943 unsigned int pkt_size;
1944 struct sk_buff *skb;
1948 /* read size+status of next frame from DMA ring buffer */
1949 rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset));
1950 rx_size = rx_status >> 16;
1951 pkt_size = rx_size - 4;
1953 if (netif_msg_rx_status(tp))
1954 pr_debug("%s: rtl8139_rx() status %4.4x, size %4.4x,"
1955 " cur %4.4x.\n", dev->name, rx_status,
1957 #if RTL8139_DEBUG > 2
1960 pr_debug("%s: Frame contents ", dev->name);
1961 for (i = 0; i < 70; i++)
1963 rx_ring[ring_offset + i]);
1968 /* Packet copy from FIFO still in progress.
1969 * Theoretically, this should never happen
1970 * since EarlyRx is disabled.
1972 if (unlikely(rx_size == 0xfff0)) {
1973 if (!tp->fifo_copy_timeout)
1974 tp->fifo_copy_timeout = jiffies + 2;
1975 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1976 pr_debug("%s: hung FIFO. Reset.", dev->name);
1980 if (netif_msg_intr(tp)) {
1981 pr_debug("%s: fifo copy in progress.",
1984 tp->xstats.early_rx++;
1989 tp->fifo_copy_timeout = 0;
1991 /* If Rx err or invalid rx_size/rx_status received
1992 * (which happens if we get lost in the ring),
1993 * Rx process gets reset, so we abort any further
1996 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
1998 (!(rx_status & RxStatusOK)))) {
1999 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2004 /* Malloc up new buffer, compatible with net-2e. */
2005 /* Omit the four octet CRC from the length. */
2007 skb = netdev_alloc_skb(dev, pkt_size + NET_IP_ALIGN);
2009 skb_reserve (skb, NET_IP_ALIGN); /* 16 byte align the IP fields. */
2011 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2013 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
2015 skb_put (skb, pkt_size);
2017 skb->protocol = eth_type_trans (skb, dev);
2019 dev->stats.rx_bytes += pkt_size;
2020 dev->stats.rx_packets++;
2022 netif_receive_skb (skb);
2024 if (net_ratelimit())
2025 pr_warning("%s: Memory squeeze, dropping packet.\n",
2027 dev->stats.rx_dropped++;
2031 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2032 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2034 rtl8139_isr_ack(tp);
2037 if (unlikely(!received || rx_size == 0xfff0))
2038 rtl8139_isr_ack(tp);
2040 pr_debug("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2041 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2042 RTL_R16 (RxBufAddr),
2043 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2045 tp->cur_rx = cur_rx;
2048 * The receive buffer should be mostly empty.
2049 * Tell NAPI to reenable the Rx irq.
2051 if (tp->fifo_copy_timeout)
2059 static void rtl8139_weird_interrupt (struct net_device *dev,
2060 struct rtl8139_private *tp,
2061 void __iomem *ioaddr,
2062 int status, int link_changed)
2064 pr_debug("%s: Abnormal interrupt, status %8.8x.\n",
2067 assert (dev != NULL);
2068 assert (tp != NULL);
2069 assert (ioaddr != NULL);
2071 /* Update the error count. */
2072 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2073 RTL_W32 (RxMissed, 0);
2075 if ((status & RxUnderrun) && link_changed &&
2076 (tp->drv_flags & HAS_LNK_CHNG)) {
2077 rtl_check_media(dev, 0);
2078 status &= ~RxUnderrun;
2081 if (status & (RxUnderrun | RxErr))
2082 dev->stats.rx_errors++;
2084 if (status & PCSTimeout)
2085 dev->stats.rx_length_errors++;
2086 if (status & RxUnderrun)
2087 dev->stats.rx_fifo_errors++;
2088 if (status & PCIErr) {
2090 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2091 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2093 pr_err("%s: PCI Bus error %4.4x.\n",
2094 dev->name, pci_cmd_status);
2098 static int rtl8139_poll(struct napi_struct *napi, int budget)
2100 struct rtl8139_private *tp = container_of(napi, struct rtl8139_private, napi);
2101 struct net_device *dev = tp->dev;
2102 void __iomem *ioaddr = tp->mmio_addr;
2105 spin_lock(&tp->rx_lock);
2107 if (likely(RTL_R16(IntrStatus) & RxAckBits))
2108 work_done += rtl8139_rx(dev, tp, budget);
2110 if (work_done < budget) {
2111 unsigned long flags;
2113 * Order is important since data can get interrupted
2114 * again when we think we are done.
2116 spin_lock_irqsave(&tp->lock, flags);
2117 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2118 __napi_complete(napi);
2119 spin_unlock_irqrestore(&tp->lock, flags);
2121 spin_unlock(&tp->rx_lock);
2126 /* The interrupt handler does all of the Rx thread work and cleans up
2127 after the Tx thread. */
2128 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance)
2130 struct net_device *dev = (struct net_device *) dev_instance;
2131 struct rtl8139_private *tp = netdev_priv(dev);
2132 void __iomem *ioaddr = tp->mmio_addr;
2133 u16 status, ackstat;
2134 int link_changed = 0; /* avoid bogus "uninit" warning */
2137 spin_lock (&tp->lock);
2138 status = RTL_R16 (IntrStatus);
2141 if (unlikely((status & rtl8139_intr_mask) == 0))
2146 /* h/w no longer present (hotplug?) or major error, bail */
2147 if (unlikely(status == 0xFFFF))
2150 /* close possible race's with dev_close */
2151 if (unlikely(!netif_running(dev))) {
2152 RTL_W16 (IntrMask, 0);
2156 /* Acknowledge all of the current interrupt sources ASAP, but
2157 an first get an additional status bit from CSCR. */
2158 if (unlikely(status & RxUnderrun))
2159 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2161 ackstat = status & ~(RxAckBits | TxErr);
2163 RTL_W16 (IntrStatus, ackstat);
2165 /* Receive packets are processed by poll routine.
2166 If not running start it now. */
2167 if (status & RxAckBits){
2168 if (napi_schedule_prep(&tp->napi)) {
2169 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2170 __napi_schedule(&tp->napi);
2174 /* Check uncommon events with one test. */
2175 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2176 rtl8139_weird_interrupt (dev, tp, ioaddr,
2177 status, link_changed);
2179 if (status & (TxOK | TxErr)) {
2180 rtl8139_tx_interrupt (dev, tp, ioaddr);
2182 RTL_W16 (IntrStatus, TxErr);
2185 spin_unlock (&tp->lock);
2187 pr_debug("%s: exiting interrupt, intr_status=%#4.4x.\n",
2188 dev->name, RTL_R16 (IntrStatus));
2189 return IRQ_RETVAL(handled);
2192 #ifdef CONFIG_NET_POLL_CONTROLLER
2194 * Polling receive - used by netconsole and other diagnostic tools
2195 * to allow network i/o with interrupts disabled.
2197 static void rtl8139_poll_controller(struct net_device *dev)
2199 disable_irq(dev->irq);
2200 rtl8139_interrupt(dev->irq, dev);
2201 enable_irq(dev->irq);
2205 static int rtl8139_set_mac_address(struct net_device *dev, void *p)
2207 struct rtl8139_private *tp = netdev_priv(dev);
2208 void __iomem *ioaddr = tp->mmio_addr;
2209 struct sockaddr *addr = p;
2211 if (!is_valid_ether_addr(addr->sa_data))
2212 return -EADDRNOTAVAIL;
2214 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
2216 spin_lock_irq(&tp->lock);
2218 RTL_W8_F(Cfg9346, Cfg9346_Unlock);
2219 RTL_W32_F(MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
2220 RTL_W32_F(MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
2221 RTL_W8_F(Cfg9346, Cfg9346_Lock);
2223 spin_unlock_irq(&tp->lock);
2228 static int rtl8139_close (struct net_device *dev)
2230 struct rtl8139_private *tp = netdev_priv(dev);
2231 void __iomem *ioaddr = tp->mmio_addr;
2232 unsigned long flags;
2234 netif_stop_queue(dev);
2235 napi_disable(&tp->napi);
2237 if (netif_msg_ifdown(tp))
2238 pr_debug("%s: Shutting down ethercard, status was 0x%4.4x.\n",
2239 dev->name, RTL_R16 (IntrStatus));
2241 spin_lock_irqsave (&tp->lock, flags);
2243 /* Stop the chip's Tx and Rx DMA processes. */
2244 RTL_W8 (ChipCmd, 0);
2246 /* Disable interrupts by clearing the interrupt mask. */
2247 RTL_W16 (IntrMask, 0);
2249 /* Update the error counts. */
2250 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2251 RTL_W32 (RxMissed, 0);
2253 spin_unlock_irqrestore (&tp->lock, flags);
2255 free_irq (dev->irq, dev);
2257 rtl8139_tx_clear (tp);
2259 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
2260 tp->rx_ring, tp->rx_ring_dma);
2261 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
2262 tp->tx_bufs, tp->tx_bufs_dma);
2266 /* Green! Put the chip in low-power mode. */
2267 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2269 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2270 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2276 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2277 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2278 other threads or interrupts aren't messing with the 8139. */
2279 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2281 struct rtl8139_private *tp = netdev_priv(dev);
2282 void __iomem *ioaddr = tp->mmio_addr;
2284 spin_lock_irq(&tp->lock);
2285 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
2286 u8 cfg3 = RTL_R8 (Config3);
2287 u8 cfg5 = RTL_R8 (Config5);
2289 wol->supported = WAKE_PHY | WAKE_MAGIC
2290 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2293 if (cfg3 & Cfg3_LinkUp)
2294 wol->wolopts |= WAKE_PHY;
2295 if (cfg3 & Cfg3_Magic)
2296 wol->wolopts |= WAKE_MAGIC;
2297 /* (KON)FIXME: See how netdev_set_wol() handles the
2298 following constants. */
2299 if (cfg5 & Cfg5_UWF)
2300 wol->wolopts |= WAKE_UCAST;
2301 if (cfg5 & Cfg5_MWF)
2302 wol->wolopts |= WAKE_MCAST;
2303 if (cfg5 & Cfg5_BWF)
2304 wol->wolopts |= WAKE_BCAST;
2306 spin_unlock_irq(&tp->lock);
2310 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2311 that wol points to kernel memory and other threads or interrupts
2312 aren't messing with the 8139. */
2313 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2315 struct rtl8139_private *tp = netdev_priv(dev);
2316 void __iomem *ioaddr = tp->mmio_addr;
2320 support = ((rtl_chip_info[tp->chipset].flags & HasLWake)
2321 ? (WAKE_PHY | WAKE_MAGIC
2322 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2324 if (wol->wolopts & ~support)
2327 spin_lock_irq(&tp->lock);
2328 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2329 if (wol->wolopts & WAKE_PHY)
2330 cfg3 |= Cfg3_LinkUp;
2331 if (wol->wolopts & WAKE_MAGIC)
2333 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2334 RTL_W8 (Config3, cfg3);
2335 RTL_W8 (Cfg9346, Cfg9346_Lock);
2337 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2338 /* (KON)FIXME: These are untested. We may have to set the
2339 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2341 if (wol->wolopts & WAKE_UCAST)
2343 if (wol->wolopts & WAKE_MCAST)
2345 if (wol->wolopts & WAKE_BCAST)
2347 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2348 spin_unlock_irq(&tp->lock);
2353 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2355 struct rtl8139_private *tp = netdev_priv(dev);
2356 strcpy(info->driver, DRV_NAME);
2357 strcpy(info->version, DRV_VERSION);
2358 strcpy(info->bus_info, pci_name(tp->pci_dev));
2359 info->regdump_len = tp->regs_len;
2362 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2364 struct rtl8139_private *tp = netdev_priv(dev);
2365 spin_lock_irq(&tp->lock);
2366 mii_ethtool_gset(&tp->mii, cmd);
2367 spin_unlock_irq(&tp->lock);
2371 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2373 struct rtl8139_private *tp = netdev_priv(dev);
2375 spin_lock_irq(&tp->lock);
2376 rc = mii_ethtool_sset(&tp->mii, cmd);
2377 spin_unlock_irq(&tp->lock);
2381 static int rtl8139_nway_reset(struct net_device *dev)
2383 struct rtl8139_private *tp = netdev_priv(dev);
2384 return mii_nway_restart(&tp->mii);
2387 static u32 rtl8139_get_link(struct net_device *dev)
2389 struct rtl8139_private *tp = netdev_priv(dev);
2390 return mii_link_ok(&tp->mii);
2393 static u32 rtl8139_get_msglevel(struct net_device *dev)
2395 struct rtl8139_private *tp = netdev_priv(dev);
2396 return tp->msg_enable;
2399 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2401 struct rtl8139_private *tp = netdev_priv(dev);
2402 tp->msg_enable = datum;
2405 static int rtl8139_get_regs_len(struct net_device *dev)
2407 struct rtl8139_private *tp;
2408 /* TODO: we are too slack to do reg dumping for pio, for now */
2411 tp = netdev_priv(dev);
2412 return tp->regs_len;
2415 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2417 struct rtl8139_private *tp;
2419 /* TODO: we are too slack to do reg dumping for pio, for now */
2422 tp = netdev_priv(dev);
2424 regs->version = RTL_REGS_VER;
2426 spin_lock_irq(&tp->lock);
2427 memcpy_fromio(regbuf, tp->mmio_addr, regs->len);
2428 spin_unlock_irq(&tp->lock);
2431 static int rtl8139_get_sset_count(struct net_device *dev, int sset)
2435 return RTL_NUM_STATS;
2441 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2443 struct rtl8139_private *tp = netdev_priv(dev);
2445 data[0] = tp->xstats.early_rx;
2446 data[1] = tp->xstats.tx_buf_mapped;
2447 data[2] = tp->xstats.tx_timeouts;
2448 data[3] = tp->xstats.rx_lost_in_ring;
2451 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2453 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2456 static const struct ethtool_ops rtl8139_ethtool_ops = {
2457 .get_drvinfo = rtl8139_get_drvinfo,
2458 .get_settings = rtl8139_get_settings,
2459 .set_settings = rtl8139_set_settings,
2460 .get_regs_len = rtl8139_get_regs_len,
2461 .get_regs = rtl8139_get_regs,
2462 .nway_reset = rtl8139_nway_reset,
2463 .get_link = rtl8139_get_link,
2464 .get_msglevel = rtl8139_get_msglevel,
2465 .set_msglevel = rtl8139_set_msglevel,
2466 .get_wol = rtl8139_get_wol,
2467 .set_wol = rtl8139_set_wol,
2468 .get_strings = rtl8139_get_strings,
2469 .get_sset_count = rtl8139_get_sset_count,
2470 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2473 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2475 struct rtl8139_private *tp = netdev_priv(dev);
2478 if (!netif_running(dev))
2481 spin_lock_irq(&tp->lock);
2482 rc = generic_mii_ioctl(&tp->mii, if_mii(rq), cmd, NULL);
2483 spin_unlock_irq(&tp->lock);
2489 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2491 struct rtl8139_private *tp = netdev_priv(dev);
2492 void __iomem *ioaddr = tp->mmio_addr;
2493 unsigned long flags;
2495 if (netif_running(dev)) {
2496 spin_lock_irqsave (&tp->lock, flags);
2497 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2498 RTL_W32 (RxMissed, 0);
2499 spin_unlock_irqrestore (&tp->lock, flags);
2505 /* Set or clear the multicast filter for this adaptor.
2506 This routine is not state sensitive and need not be SMP locked. */
2508 static void __set_rx_mode (struct net_device *dev)
2510 struct rtl8139_private *tp = netdev_priv(dev);
2511 void __iomem *ioaddr = tp->mmio_addr;
2512 u32 mc_filter[2]; /* Multicast hash filter */
2516 pr_debug("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2517 dev->name, dev->flags, RTL_R32 (RxConfig));
2519 /* Note: do not reorder, GCC is clever about common statements. */
2520 if (dev->flags & IFF_PROMISC) {
2522 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2524 mc_filter[1] = mc_filter[0] = 0xffffffff;
2525 } else if ((dev->mc_count > multicast_filter_limit)
2526 || (dev->flags & IFF_ALLMULTI)) {
2527 /* Too many to filter perfectly -- accept all multicasts. */
2528 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2529 mc_filter[1] = mc_filter[0] = 0xffffffff;
2531 struct dev_mc_list *mclist;
2532 rx_mode = AcceptBroadcast | AcceptMyPhys;
2533 mc_filter[1] = mc_filter[0] = 0;
2534 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2535 i++, mclist = mclist->next) {
2536 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2538 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2539 rx_mode |= AcceptMulticast;
2543 /* We can safely update without stopping the chip. */
2544 tmp = rtl8139_rx_config | rx_mode;
2545 if (tp->rx_config != tmp) {
2546 RTL_W32_F (RxConfig, tmp);
2547 tp->rx_config = tmp;
2549 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2550 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2553 static void rtl8139_set_rx_mode (struct net_device *dev)
2555 unsigned long flags;
2556 struct rtl8139_private *tp = netdev_priv(dev);
2558 spin_lock_irqsave (&tp->lock, flags);
2560 spin_unlock_irqrestore (&tp->lock, flags);
2565 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2567 struct net_device *dev = pci_get_drvdata (pdev);
2568 struct rtl8139_private *tp = netdev_priv(dev);
2569 void __iomem *ioaddr = tp->mmio_addr;
2570 unsigned long flags;
2572 pci_save_state (pdev);
2574 if (!netif_running (dev))
2577 netif_device_detach (dev);
2579 spin_lock_irqsave (&tp->lock, flags);
2581 /* Disable interrupts, stop Tx and Rx. */
2582 RTL_W16 (IntrMask, 0);
2583 RTL_W8 (ChipCmd, 0);
2585 /* Update the error counts. */
2586 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2587 RTL_W32 (RxMissed, 0);
2589 spin_unlock_irqrestore (&tp->lock, flags);
2591 pci_set_power_state (pdev, PCI_D3hot);
2597 static int rtl8139_resume (struct pci_dev *pdev)
2599 struct net_device *dev = pci_get_drvdata (pdev);
2601 pci_restore_state (pdev);
2602 if (!netif_running (dev))
2604 pci_set_power_state (pdev, PCI_D0);
2605 rtl8139_init_ring (dev);
2606 rtl8139_hw_start (dev);
2607 netif_device_attach (dev);
2611 #endif /* CONFIG_PM */
2614 static struct pci_driver rtl8139_pci_driver = {
2616 .id_table = rtl8139_pci_tbl,
2617 .probe = rtl8139_init_one,
2618 .remove = __devexit_p(rtl8139_remove_one),
2620 .suspend = rtl8139_suspend,
2621 .resume = rtl8139_resume,
2622 #endif /* CONFIG_PM */
2626 static int __init rtl8139_init_module (void)
2628 /* when we're a module, we always print a version message,
2629 * even if no 8139 board is found.
2632 pr_info(RTL8139_DRIVER_NAME "\n");
2635 return pci_register_driver(&rtl8139_pci_driver);
2639 static void __exit rtl8139_cleanup_module (void)
2641 pci_unregister_driver (&rtl8139_pci_driver);
2645 module_init(rtl8139_init_module);
2646 module_exit(rtl8139_cleanup_module);