3 8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux.
5 Maintained by Jeff Garzik <jgarzik@pobox.com>
6 Copyright 2000-2002 Jeff Garzik
8 Much code comes from Donald Becker's rtl8139.c driver,
9 versions 1.13 and older. This driver was originally based
10 on rtl8139.c version 1.07. Header of rtl8139.c version 1.13:
14 Written 1997-2001 by Donald Becker.
15 This software may be used and distributed according to the
16 terms of the GNU General Public License (GPL), incorporated
17 herein by reference. Drivers based on or derived from this
18 code fall under the GPL and must retain the authorship,
19 copyright and license notice. This file is not a complete
20 program and may only be used when the entire operating
21 system is licensed under the GPL.
23 This driver is for boards based on the RTL8129 and RTL8139
26 The author may be reached as becker@scyld.com, or C/O Scyld
27 Computing Corporation 410 Severn Ave., Suite 210 Annapolis
30 Support and updates available at
31 http://www.scyld.com/network/rtl8139.html
33 Twister-tuning table provided by Kinston
34 <shangh@realtek.com.tw>.
38 This software may be used and distributed according to the terms
39 of the GNU General Public License, incorporated herein by reference.
43 Donald Becker - he wrote the original driver, kudos to him!
44 (but please don't e-mail him for support, this isn't his driver)
46 Tigran Aivazian - bug fixes, skbuff free cleanup
48 Martin Mares - suggestions for PCI cleanup
50 David S. Miller - PCI DMA and softnet updates
52 Ernst Gill - fixes ported from BSD driver
54 Daniel Kobras - identified specific locations of
55 posted MMIO write bugginess
57 Gerard Sharp - bug fix, testing and feedback
59 David Ford - Rx ring wrap fix
61 Dan DeMaggio - swapped RTL8139 cards with me, and allowed me
62 to find and fix a crucial bug on older chipsets.
64 Donald Becker/Chris Butterworth/Marcus Westergren -
65 Noticed various Rx packet size-related buglets.
67 Santiago Garcia Mantinan - testing and feedback
69 Jens David - 2.2.x kernel backports
71 Martin Dennett - incredibly helpful insight on undocumented
72 features of the 8139 chips
74 Jean-Jacques Michel - bug fix
76 Tobias Ringström - Rx interrupt status checking suggestion
78 Andrew Morton - Clear blocked signals, avoid
79 buffer overrun setting current->comm.
81 Kalle Olavi Niemitalo - Wake-on-LAN ioctls
83 Robert Kuebel - Save kernel thread from dying on any signal.
85 Submitting bug reports:
87 "rtl8139-diag -mmmaaavvveefN" output
88 enable RTL8139_DEBUG below, and look at 'dmesg' or kernel log
92 #define DRV_NAME "8139too"
93 #define DRV_VERSION "0.9.28"
96 #include <linux/module.h>
97 #include <linux/kernel.h>
98 #include <linux/compiler.h>
99 #include <linux/pci.h>
100 #include <linux/init.h>
101 #include <linux/netdevice.h>
102 #include <linux/etherdevice.h>
103 #include <linux/rtnetlink.h>
104 #include <linux/delay.h>
105 #include <linux/ethtool.h>
106 #include <linux/mii.h>
107 #include <linux/completion.h>
108 #include <linux/crc32.h>
109 #include <linux/io.h>
110 #include <linux/uaccess.h>
113 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
114 #define PFX DRV_NAME ": "
116 /* Default Message level */
117 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
122 /* define to 1, 2 or 3 to enable copious debugging info */
123 #define RTL8139_DEBUG 0
125 /* define to 1 to disable lightweight runtime debugging checks */
126 #undef RTL8139_NDEBUG
130 /* note: prints function name for you */
131 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
133 # define DPRINTK(fmt, args...)
136 #ifdef RTL8139_NDEBUG
137 # define assert(expr) do {} while (0)
139 # define assert(expr) \
140 if(unlikely(!(expr))) { \
141 printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
142 #expr, __FILE__, __func__, __LINE__); \
147 /* A few user-configurable values. */
150 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
151 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
153 /* Whether to use MMIO or PIO. Default to MMIO. */
154 #ifdef CONFIG_8139TOO_PIO
155 static int use_io = 1;
157 static int use_io = 0;
160 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
161 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
162 static int multicast_filter_limit = 32;
164 /* bitmapped message enable number */
165 static int debug = -1;
169 * Warning: 64K ring has hardware issues and may lock up.
171 #if defined(CONFIG_SH_DREAMCAST)
172 #define RX_BUF_IDX 0 /* 8K ring */
174 #define RX_BUF_IDX 2 /* 32K ring */
176 #define RX_BUF_LEN (8192 << RX_BUF_IDX)
177 #define RX_BUF_PAD 16
178 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
180 #if RX_BUF_LEN == 65536
181 #define RX_BUF_TOT_LEN RX_BUF_LEN
183 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
186 /* Number of Tx descriptor registers. */
187 #define NUM_TX_DESC 4
189 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
190 #define MAX_ETH_FRAME_SIZE 1536
192 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
193 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
194 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
196 /* PCI Tuning Parameters
197 Threshold is bytes transferred to chip before transmission starts. */
198 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
200 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
201 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
202 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */
203 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
204 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */
206 /* Operational parameters that usually are not changed. */
207 /* Time in jiffies before concluding the transmitter is hung. */
208 #define TX_TIMEOUT (6*HZ)
212 HAS_MII_XCVR = 0x010000,
213 HAS_CHIP_XCVR = 0x020000,
214 HAS_LNK_CHNG = 0x040000,
217 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */
218 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */
219 #define RTL_MIN_IO_SIZE 0x80
220 #define RTL8139B_IO_SIZE 256
222 #define RTL8129_CAPS HAS_MII_XCVR
223 #define RTL8139_CAPS (HAS_CHIP_XCVR|HAS_LNK_CHNG)
231 /* indexed by board_t, above */
232 static const struct {
235 } board_info[] __devinitdata = {
236 { "RealTek RTL8139", RTL8139_CAPS },
237 { "RealTek RTL8129", RTL8129_CAPS },
241 static struct pci_device_id rtl8139_pci_tbl[] = {
242 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
243 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
244 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
245 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
246 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
247 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
248 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
249 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
250 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
251 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
252 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
253 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
254 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
255 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
256 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
257 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
258 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
259 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
260 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
262 #ifdef CONFIG_SH_SECUREEDGE5410
263 /* Bogus 8139 silicon reports 8129 without external PROM :-( */
264 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
266 #ifdef CONFIG_8139TOO_8129
267 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 },
270 /* some crazy cards report invalid vendor ids like
271 * 0x0001 here. The other ids are valid and constant,
272 * so we simply don't match on the main vendor id.
274 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 },
275 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 },
276 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 },
280 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl);
283 const char str[ETH_GSTRING_LEN];
284 } ethtool_stats_keys[] = {
288 { "rx_lost_in_ring" },
291 /* The rest of these values should never change. */
293 /* Symbolic offsets to registers. */
294 enum RTL8139_registers {
295 MAC0 = 0, /* Ethernet hardware address. */
296 MAR0 = 8, /* Multicast filter. */
297 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
298 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
307 Timer = 0x48, /* A general-purpose counter. */
308 RxMissed = 0x4C, /* 24 bits valid, write clears. */
315 Config4 = 0x5A, /* absent on RTL-8139A */
319 BasicModeCtrl = 0x62,
320 BasicModeStatus = 0x64,
323 NWayExpansion = 0x6A,
324 /* Undocumented registers, but required for proper operation. */
325 FIFOTMS = 0x70, /* FIFO Control and test. */
326 CSCR = 0x74, /* Chip Status and Configuration Register. */
328 FlashReg = 0xD4, /* Communication with Flash ROM, four bytes. */
329 PARA7c = 0x7c, /* Magic transceiver parameter register. */
330 Config5 = 0xD8, /* absent on RTL-8139A */
334 MultiIntrClear = 0xF000,
336 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
346 /* Interrupt register bits, using my own meaningful names. */
347 enum IntrStatusBits {
358 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
365 TxOutOfWindow = 0x20000000,
366 TxAborted = 0x40000000,
367 TxCarrierLost = 0x80000000,
370 RxMulticast = 0x8000,
372 RxBroadcast = 0x2000,
373 RxBadSymbol = 0x0020,
381 /* Bits in RxConfig. */
385 AcceptBroadcast = 0x08,
386 AcceptMulticast = 0x04,
388 AcceptAllPhys = 0x01,
391 /* Bits in TxConfig. */
392 enum tx_config_bits {
393 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
395 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
396 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
397 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
398 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
400 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
401 TxCRC = (1 << 16), /* DISABLE Tx pkt CRC append */
402 TxClearAbt = (1 << 0), /* Clear abort (WO) */
403 TxDMAShift = 8, /* DMA burst value (0-7) is shifted X many bits */
404 TxRetryShift = 4, /* TXRR value (0-15) is shifted X many bits */
406 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
409 /* Bits in Config1 */
411 Cfg1_PM_Enable = 0x01,
412 Cfg1_VPD_Enable = 0x02,
415 LWAKE = 0x10, /* not on 8139, 8139A */
416 Cfg1_Driver_Load = 0x20,
419 SLEEP = (1 << 1), /* only on 8139, 8139A */
420 PWRDN = (1 << 0), /* only on 8139, 8139A */
423 /* Bits in Config3 */
425 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
426 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
427 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
428 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
429 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
430 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
431 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
432 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
435 /* Bits in Config4 */
437 LWPTN = (1 << 2), /* not on 8139, 8139A */
440 /* Bits in Config5 */
442 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
443 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
444 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
445 Cfg5_FIFOAddrPtr= (1 << 3), /* Realtek internal SRAM testing */
446 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
447 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
448 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
452 /* rx fifo threshold */
454 RxCfgFIFONone = (7 << RxCfgFIFOShift),
458 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
460 /* rx ring buffer length */
462 RxCfgRcv16K = (1 << 11),
463 RxCfgRcv32K = (1 << 12),
464 RxCfgRcv64K = (1 << 11) | (1 << 12),
466 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
470 /* Twister tuning parameters from RealTek.
471 Completely undocumented, but required to tune bad links on some boards. */
473 CSCR_LinkOKBit = 0x0400,
474 CSCR_LinkChangeBit = 0x0800,
475 CSCR_LinkStatusBits = 0x0f000,
476 CSCR_LinkDownOffCmd = 0x003c0,
477 CSCR_LinkDownCmd = 0x0f3c0,
482 Cfg9346_Unlock = 0xC0,
499 HasHltClk = (1 << 0),
503 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
504 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
505 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
507 /* directly indexed by chip_t, above */
508 static const struct {
510 u32 version; /* from RTL8139C/RTL8139D docs */
512 } rtl_chip_info[] = {
514 HW_REVID(1, 0, 0, 0, 0, 0, 0),
519 HW_REVID(1, 1, 0, 0, 0, 0, 0),
524 HW_REVID(1, 1, 1, 0, 0, 0, 0),
525 HasHltClk, /* XXX undocumented? */
529 HW_REVID(1, 1, 1, 0, 0, 1, 0),
530 HasHltClk, /* XXX undocumented? */
534 HW_REVID(1, 1, 1, 1, 0, 0, 0),
539 HW_REVID(1, 1, 1, 1, 1, 0, 0),
544 HW_REVID(1, 1, 1, 0, 1, 0, 0),
549 HW_REVID(1, 1, 1, 1, 0, 1, 0),
554 HW_REVID(1, 1, 1, 0, 1, 0, 1),
555 HasHltClk /* XXX undocumented? */
560 HW_REVID(1, 1, 1, 0, 1, 1, 1),
565 struct rtl_extra_stats {
566 unsigned long early_rx;
567 unsigned long tx_buf_mapped;
568 unsigned long tx_timeouts;
569 unsigned long rx_lost_in_ring;
572 struct rtl8139_private {
573 void __iomem *mmio_addr;
575 struct pci_dev *pci_dev;
577 struct napi_struct napi;
578 struct net_device *dev;
580 unsigned char *rx_ring;
581 unsigned int cur_rx; /* RX buf index of next pkt */
582 dma_addr_t rx_ring_dma;
584 unsigned int tx_flag;
585 unsigned long cur_tx;
586 unsigned long dirty_tx;
587 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
588 unsigned char *tx_bufs; /* Tx bounce buffer region. */
589 dma_addr_t tx_bufs_dma;
591 signed char phys[4]; /* MII device addresses. */
593 /* Twister tune state. */
594 char twistie, twist_row, twist_col;
596 unsigned int watchdog_fired : 1;
597 unsigned int default_port : 4; /* Last dev->if_port value. */
598 unsigned int have_thread : 1;
605 struct rtl_extra_stats xstats;
607 struct delayed_work thread;
609 struct mii_if_info mii;
610 unsigned int regs_len;
611 unsigned long fifo_copy_timeout;
614 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
615 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
616 MODULE_LICENSE("GPL");
617 MODULE_VERSION(DRV_VERSION);
619 module_param(use_io, int, 0);
620 MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO");
621 module_param(multicast_filter_limit, int, 0);
622 module_param_array(media, int, NULL, 0);
623 module_param_array(full_duplex, int, NULL, 0);
624 module_param(debug, int, 0);
625 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
626 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
627 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
628 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
630 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
631 static int rtl8139_open (struct net_device *dev);
632 static int mdio_read (struct net_device *dev, int phy_id, int location);
633 static void mdio_write (struct net_device *dev, int phy_id, int location,
635 static void rtl8139_start_thread(struct rtl8139_private *tp);
636 static void rtl8139_tx_timeout (struct net_device *dev);
637 static void rtl8139_init_ring (struct net_device *dev);
638 static int rtl8139_start_xmit (struct sk_buff *skb,
639 struct net_device *dev);
640 #ifdef CONFIG_NET_POLL_CONTROLLER
641 static void rtl8139_poll_controller(struct net_device *dev);
643 static int rtl8139_poll(struct napi_struct *napi, int budget);
644 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance);
645 static int rtl8139_close (struct net_device *dev);
646 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
647 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
648 static void rtl8139_set_rx_mode (struct net_device *dev);
649 static void __set_rx_mode (struct net_device *dev);
650 static void rtl8139_hw_start (struct net_device *dev);
651 static void rtl8139_thread (struct work_struct *work);
652 static void rtl8139_tx_timeout_task(struct work_struct *work);
653 static const struct ethtool_ops rtl8139_ethtool_ops;
655 /* write MMIO register, with flush */
656 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
657 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
658 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
659 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
661 /* write MMIO register */
662 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
663 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
664 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
666 /* read MMIO register */
667 #define RTL_R8(reg) ioread8 (ioaddr + (reg))
668 #define RTL_R16(reg) ioread16 (ioaddr + (reg))
669 #define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
672 static const u16 rtl8139_intr_mask =
673 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
674 TxErr | TxOK | RxErr | RxOK;
676 static const u16 rtl8139_norx_intr_mask =
677 PCIErr | PCSTimeout | RxUnderrun |
678 TxErr | TxOK | RxErr ;
681 static const unsigned int rtl8139_rx_config =
682 RxCfgRcv8K | RxNoWrap |
683 (RX_FIFO_THRESH << RxCfgFIFOShift) |
684 (RX_DMA_BURST << RxCfgDMAShift);
685 #elif RX_BUF_IDX == 1
686 static const unsigned int rtl8139_rx_config =
687 RxCfgRcv16K | RxNoWrap |
688 (RX_FIFO_THRESH << RxCfgFIFOShift) |
689 (RX_DMA_BURST << RxCfgDMAShift);
690 #elif RX_BUF_IDX == 2
691 static const unsigned int rtl8139_rx_config =
692 RxCfgRcv32K | RxNoWrap |
693 (RX_FIFO_THRESH << RxCfgFIFOShift) |
694 (RX_DMA_BURST << RxCfgDMAShift);
695 #elif RX_BUF_IDX == 3
696 static const unsigned int rtl8139_rx_config =
698 (RX_FIFO_THRESH << RxCfgFIFOShift) |
699 (RX_DMA_BURST << RxCfgDMAShift);
701 #error "Invalid configuration for 8139_RXBUF_IDX"
704 static const unsigned int rtl8139_tx_config =
705 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
707 static void __rtl8139_cleanup_dev (struct net_device *dev)
709 struct rtl8139_private *tp = netdev_priv(dev);
710 struct pci_dev *pdev;
712 assert (dev != NULL);
713 assert (tp->pci_dev != NULL);
717 pci_iounmap (pdev, tp->mmio_addr);
719 /* it's ok to call this even if we have no regions to free */
720 pci_release_regions (pdev);
723 pci_set_drvdata (pdev, NULL);
727 static void rtl8139_chip_reset (void __iomem *ioaddr)
731 /* Soft reset the chip. */
732 RTL_W8 (ChipCmd, CmdReset);
734 /* Check that the chip has finished the reset. */
735 for (i = 1000; i > 0; i--) {
737 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
744 static int __devinit rtl8139_init_board (struct pci_dev *pdev,
745 struct net_device **dev_out)
747 void __iomem *ioaddr;
748 struct net_device *dev;
749 struct rtl8139_private *tp;
751 int rc, disable_dev_on_err = 0;
753 unsigned long pio_start, pio_end, pio_flags, pio_len;
754 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
757 assert (pdev != NULL);
761 /* dev and priv zeroed in alloc_etherdev */
762 dev = alloc_etherdev (sizeof (*tp));
764 dev_err(&pdev->dev, "Unable to alloc new net device\n");
767 SET_NETDEV_DEV(dev, &pdev->dev);
769 tp = netdev_priv(dev);
772 /* enable device (incl. PCI PM wakeup and hotplug setup) */
773 rc = pci_enable_device (pdev);
777 pio_start = pci_resource_start (pdev, 0);
778 pio_end = pci_resource_end (pdev, 0);
779 pio_flags = pci_resource_flags (pdev, 0);
780 pio_len = pci_resource_len (pdev, 0);
782 mmio_start = pci_resource_start (pdev, 1);
783 mmio_end = pci_resource_end (pdev, 1);
784 mmio_flags = pci_resource_flags (pdev, 1);
785 mmio_len = pci_resource_len (pdev, 1);
787 /* set this immediately, we need to know before
788 * we talk to the chip directly */
789 DPRINTK("PIO region size == 0x%02X\n", pio_len);
790 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
794 /* make sure PCI base addr 0 is PIO */
795 if (!(pio_flags & IORESOURCE_IO)) {
796 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
800 /* check for weird/broken PCI region reporting */
801 if (pio_len < RTL_MIN_IO_SIZE) {
802 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
807 /* make sure PCI base addr 1 is MMIO */
808 if (!(mmio_flags & IORESOURCE_MEM)) {
809 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
813 if (mmio_len < RTL_MIN_IO_SIZE) {
814 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
820 rc = pci_request_regions (pdev, DRV_NAME);
823 disable_dev_on_err = 1;
825 /* enable PCI bus-mastering */
826 pci_set_master (pdev);
829 ioaddr = pci_iomap(pdev, 0, 0);
831 dev_err(&pdev->dev, "cannot map PIO, aborting\n");
835 dev->base_addr = pio_start;
836 tp->regs_len = pio_len;
838 /* ioremap MMIO region */
839 ioaddr = pci_iomap(pdev, 1, 0);
840 if (ioaddr == NULL) {
841 dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n");
842 pci_release_regions(pdev);
846 dev->base_addr = (long) ioaddr;
847 tp->regs_len = mmio_len;
849 tp->mmio_addr = ioaddr;
851 /* Bring old chips out of low-power mode. */
852 RTL_W8 (HltClk, 'R');
854 /* check for missing/broken hardware */
855 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
856 dev_err(&pdev->dev, "Chip not responding, ignoring board\n");
861 /* identify chip attached to board */
862 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
863 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
864 if (version == rtl_chip_info[i].version) {
869 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
870 dev_printk (KERN_DEBUG, &pdev->dev,
871 "unknown chip version, assuming RTL-8139\n");
872 dev_printk (KERN_DEBUG, &pdev->dev,
873 "TxConfig = 0x%lx\n", RTL_R32 (TxConfig));
877 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
878 version, i, rtl_chip_info[i].name);
880 if (tp->chipset >= CH_8139B) {
881 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
882 DPRINTK("PCI PM wakeup\n");
883 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
886 new_tmp8 |= Cfg1_PM_Enable;
887 if (new_tmp8 != tmp8) {
888 RTL_W8 (Cfg9346, Cfg9346_Unlock);
889 RTL_W8 (Config1, tmp8);
890 RTL_W8 (Cfg9346, Cfg9346_Lock);
892 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
893 tmp8 = RTL_R8 (Config4);
895 RTL_W8 (Cfg9346, Cfg9346_Unlock);
896 RTL_W8 (Config4, tmp8 & ~LWPTN);
897 RTL_W8 (Cfg9346, Cfg9346_Lock);
901 DPRINTK("Old chip wakeup\n");
902 tmp8 = RTL_R8 (Config1);
903 tmp8 &= ~(SLEEP | PWRDN);
904 RTL_W8 (Config1, tmp8);
907 rtl8139_chip_reset (ioaddr);
913 __rtl8139_cleanup_dev (dev);
914 if (disable_dev_on_err)
915 pci_disable_device (pdev);
920 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
921 const struct pci_device_id *ent)
923 struct net_device *dev = NULL;
924 struct rtl8139_private *tp;
925 int i, addr_len, option;
926 void __iomem *ioaddr;
927 static int board_idx = -1;
928 DECLARE_MAC_BUF(mac);
930 assert (pdev != NULL);
931 assert (ent != NULL);
935 /* when we're built into the kernel, the driver version message
936 * is only printed if at least one 8139 board has been found
940 static int printed_version;
941 if (!printed_version++)
942 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
946 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
947 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
949 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
950 pdev->vendor, pdev->device, pdev->revision);
952 "Use the \"8139cp\" driver for improved performance and stability.\n");
955 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
956 pdev->device == PCI_DEVICE_ID_REALTEK_8139 &&
957 pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS &&
958 pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) {
959 printk(KERN_INFO "8139too: OQO Model 2 detected. Forcing PIO\n");
963 i = rtl8139_init_board (pdev, &dev);
967 assert (dev != NULL);
968 tp = netdev_priv(dev);
971 ioaddr = tp->mmio_addr;
972 assert (ioaddr != NULL);
974 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
975 for (i = 0; i < 3; i++)
976 ((__le16 *) (dev->dev_addr))[i] =
977 cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len));
978 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
980 /* The Rtl8139-specific entries in the device structure. */
981 dev->open = rtl8139_open;
982 dev->hard_start_xmit = rtl8139_start_xmit;
983 netif_napi_add(dev, &tp->napi, rtl8139_poll, 64);
984 dev->stop = rtl8139_close;
985 dev->get_stats = rtl8139_get_stats;
986 dev->set_multicast_list = rtl8139_set_rx_mode;
987 dev->do_ioctl = netdev_ioctl;
988 dev->ethtool_ops = &rtl8139_ethtool_ops;
989 dev->tx_timeout = rtl8139_tx_timeout;
990 dev->watchdog_timeo = TX_TIMEOUT;
991 #ifdef CONFIG_NET_POLL_CONTROLLER
992 dev->poll_controller = rtl8139_poll_controller;
995 /* note: the hardware is not capable of sg/csum/highdma, however
996 * through the use of skb_copy_and_csum_dev we enable these
999 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
1001 dev->irq = pdev->irq;
1003 /* tp zeroed and aligned in alloc_etherdev */
1004 tp = netdev_priv(dev);
1006 /* note: tp->chipset set in rtl8139_init_board */
1007 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1008 tp->mmio_addr = ioaddr;
1010 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1011 spin_lock_init (&tp->lock);
1012 spin_lock_init (&tp->rx_lock);
1013 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1015 tp->mii.mdio_read = mdio_read;
1016 tp->mii.mdio_write = mdio_write;
1017 tp->mii.phy_id_mask = 0x3f;
1018 tp->mii.reg_num_mask = 0x1f;
1020 /* dev is fully set up and ready to use now */
1021 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1022 i = register_netdev (dev);
1023 if (i) goto err_out;
1025 pci_set_drvdata (pdev, dev);
1027 printk (KERN_INFO "%s: %s at 0x%lx, "
1030 board_info[ent->driver_data].name,
1032 print_mac(mac, dev->dev_addr),
1035 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
1036 dev->name, rtl_chip_info[tp->chipset].name);
1038 /* Find the connected MII xcvrs.
1039 Doing this in open() would allow detecting external xcvrs later, but
1040 takes too much time. */
1041 #ifdef CONFIG_8139TOO_8129
1042 if (tp->drv_flags & HAS_MII_XCVR) {
1043 int phy, phy_idx = 0;
1044 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1045 int mii_status = mdio_read(dev, phy, 1);
1046 if (mii_status != 0xffff && mii_status != 0x0000) {
1047 u16 advertising = mdio_read(dev, phy, 4);
1048 tp->phys[phy_idx++] = phy;
1049 printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x "
1050 "advertising %4.4x.\n",
1051 dev->name, phy, mii_status, advertising);
1055 printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
1063 tp->mii.phy_id = tp->phys[0];
1065 /* The lower four bits are the media type. */
1066 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1068 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1069 tp->default_port = option & 0xFF;
1070 if (tp->default_port)
1071 tp->mii.force_media = 1;
1073 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1074 tp->mii.full_duplex = full_duplex[board_idx];
1075 if (tp->mii.full_duplex) {
1076 printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
1077 /* Changing the MII-advertised media because might prevent
1079 tp->mii.force_media = 1;
1081 if (tp->default_port) {
1082 printk(KERN_INFO " Forcing %dMbps %s-duplex operation.\n",
1083 (option & 0x20 ? 100 : 10),
1084 (option & 0x10 ? "full" : "half"));
1085 mdio_write(dev, tp->phys[0], 0,
1086 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1087 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1090 /* Put the chip into low-power mode. */
1091 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1092 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1097 __rtl8139_cleanup_dev (dev);
1098 pci_disable_device (pdev);
1103 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1105 struct net_device *dev = pci_get_drvdata (pdev);
1107 assert (dev != NULL);
1109 flush_scheduled_work();
1111 unregister_netdev (dev);
1113 __rtl8139_cleanup_dev (dev);
1114 pci_disable_device (pdev);
1118 /* Serial EEPROM section. */
1120 /* EEPROM_Ctrl bits. */
1121 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1122 #define EE_CS 0x08 /* EEPROM chip select. */
1123 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1124 #define EE_WRITE_0 0x00
1125 #define EE_WRITE_1 0x02
1126 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1127 #define EE_ENB (0x80 | EE_CS)
1129 /* Delay between EEPROM clock transitions.
1130 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1133 #define eeprom_delay() (void)RTL_R32(Cfg9346)
1135 /* The EEPROM commands include the alway-set leading bit. */
1136 #define EE_WRITE_CMD (5)
1137 #define EE_READ_CMD (6)
1138 #define EE_ERASE_CMD (7)
1140 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1143 unsigned retval = 0;
1144 int read_cmd = location | (EE_READ_CMD << addr_len);
1146 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1147 RTL_W8 (Cfg9346, EE_ENB);
1150 /* Shift the read command bits out. */
1151 for (i = 4 + addr_len; i >= 0; i--) {
1152 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1153 RTL_W8 (Cfg9346, EE_ENB | dataval);
1155 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1158 RTL_W8 (Cfg9346, EE_ENB);
1161 for (i = 16; i > 0; i--) {
1162 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1165 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1167 RTL_W8 (Cfg9346, EE_ENB);
1171 /* Terminate the EEPROM access. */
1172 RTL_W8 (Cfg9346, ~EE_CS);
1178 /* MII serial management: mostly bogus for now. */
1179 /* Read and write the MII management registers using software-generated
1180 serial MDIO protocol.
1181 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1182 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1183 "overclocking" issues. */
1184 #define MDIO_DIR 0x80
1185 #define MDIO_DATA_OUT 0x04
1186 #define MDIO_DATA_IN 0x02
1187 #define MDIO_CLK 0x01
1188 #define MDIO_WRITE0 (MDIO_DIR)
1189 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1191 #define mdio_delay() RTL_R8(Config4)
1194 static const char mii_2_8139_map[8] = {
1206 #ifdef CONFIG_8139TOO_8129
1207 /* Syncronize the MII management interface by shifting 32 one bits out. */
1208 static void mdio_sync (void __iomem *ioaddr)
1212 for (i = 32; i >= 0; i--) {
1213 RTL_W8 (Config4, MDIO_WRITE1);
1215 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1221 static int mdio_read (struct net_device *dev, int phy_id, int location)
1223 struct rtl8139_private *tp = netdev_priv(dev);
1225 #ifdef CONFIG_8139TOO_8129
1226 void __iomem *ioaddr = tp->mmio_addr;
1227 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1231 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1232 void __iomem *ioaddr = tp->mmio_addr;
1233 return location < 8 && mii_2_8139_map[location] ?
1234 RTL_R16 (mii_2_8139_map[location]) : 0;
1237 #ifdef CONFIG_8139TOO_8129
1239 /* Shift the read command bits out. */
1240 for (i = 15; i >= 0; i--) {
1241 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1243 RTL_W8 (Config4, MDIO_DIR | dataval);
1245 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1249 /* Read the two transition, 16 data, and wire-idle bits. */
1250 for (i = 19; i > 0; i--) {
1251 RTL_W8 (Config4, 0);
1253 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1254 RTL_W8 (Config4, MDIO_CLK);
1259 return (retval >> 1) & 0xffff;
1263 static void mdio_write (struct net_device *dev, int phy_id, int location,
1266 struct rtl8139_private *tp = netdev_priv(dev);
1267 #ifdef CONFIG_8139TOO_8129
1268 void __iomem *ioaddr = tp->mmio_addr;
1269 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1273 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1274 void __iomem *ioaddr = tp->mmio_addr;
1275 if (location == 0) {
1276 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1277 RTL_W16 (BasicModeCtrl, value);
1278 RTL_W8 (Cfg9346, Cfg9346_Lock);
1279 } else if (location < 8 && mii_2_8139_map[location])
1280 RTL_W16 (mii_2_8139_map[location], value);
1284 #ifdef CONFIG_8139TOO_8129
1287 /* Shift the command bits out. */
1288 for (i = 31; i >= 0; i--) {
1290 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1291 RTL_W8 (Config4, dataval);
1293 RTL_W8 (Config4, dataval | MDIO_CLK);
1296 /* Clear out extra bits. */
1297 for (i = 2; i > 0; i--) {
1298 RTL_W8 (Config4, 0);
1300 RTL_W8 (Config4, MDIO_CLK);
1307 static int rtl8139_open (struct net_device *dev)
1309 struct rtl8139_private *tp = netdev_priv(dev);
1311 void __iomem *ioaddr = tp->mmio_addr;
1313 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev);
1317 tp->tx_bufs = dma_alloc_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1318 &tp->tx_bufs_dma, GFP_KERNEL);
1319 tp->rx_ring = dma_alloc_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1320 &tp->rx_ring_dma, GFP_KERNEL);
1321 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1322 free_irq(dev->irq, dev);
1325 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1326 tp->tx_bufs, tp->tx_bufs_dma);
1328 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1329 tp->rx_ring, tp->rx_ring_dma);
1335 napi_enable(&tp->napi);
1337 tp->mii.full_duplex = tp->mii.force_media;
1338 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1340 rtl8139_init_ring (dev);
1341 rtl8139_hw_start (dev);
1342 netif_start_queue (dev);
1344 if (netif_msg_ifup(tp))
1345 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#llx IRQ %d"
1346 " GP Pins %2.2x %s-duplex.\n", dev->name,
1347 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1348 dev->irq, RTL_R8 (MediaStatus),
1349 tp->mii.full_duplex ? "full" : "half");
1351 rtl8139_start_thread(tp);
1357 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1359 struct rtl8139_private *tp = netdev_priv(dev);
1361 if (tp->phys[0] >= 0) {
1362 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1366 /* Start the hardware at open or resume. */
1367 static void rtl8139_hw_start (struct net_device *dev)
1369 struct rtl8139_private *tp = netdev_priv(dev);
1370 void __iomem *ioaddr = tp->mmio_addr;
1374 /* Bring old chips out of low-power mode. */
1375 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1376 RTL_W8 (HltClk, 'R');
1378 rtl8139_chip_reset (ioaddr);
1380 /* unlock Config[01234] and BMCR register writes */
1381 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1382 /* Restore our idea of the MAC address. */
1383 RTL_W32_F (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
1384 RTL_W32_F (MAC0 + 4, le16_to_cpu (*(__le16 *) (dev->dev_addr + 4)));
1386 /* Must enable Tx/Rx before setting transfer thresholds! */
1387 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1389 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1390 RTL_W32 (RxConfig, tp->rx_config);
1391 RTL_W32 (TxConfig, rtl8139_tx_config);
1395 rtl_check_media (dev, 1);
1397 if (tp->chipset >= CH_8139B) {
1398 /* Disable magic packet scanning, which is enabled
1399 * when PM is enabled in Config1. It can be reenabled
1400 * via ETHTOOL_SWOL if desired. */
1401 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1404 DPRINTK("init buffer addresses\n");
1406 /* Lock Config[01234] and BMCR register writes */
1407 RTL_W8 (Cfg9346, Cfg9346_Lock);
1409 /* init Rx ring buffer DMA address */
1410 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1412 /* init Tx buffer DMA addresses */
1413 for (i = 0; i < NUM_TX_DESC; i++)
1414 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1416 RTL_W32 (RxMissed, 0);
1418 rtl8139_set_rx_mode (dev);
1420 /* no early-rx interrupts */
1421 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1423 /* make sure RxTx has started */
1424 tmp = RTL_R8 (ChipCmd);
1425 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1426 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1428 /* Enable all known interrupts by setting the interrupt mask. */
1429 RTL_W16 (IntrMask, rtl8139_intr_mask);
1433 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1434 static void rtl8139_init_ring (struct net_device *dev)
1436 struct rtl8139_private *tp = netdev_priv(dev);
1443 for (i = 0; i < NUM_TX_DESC; i++)
1444 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1448 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1449 static int next_tick = 3 * HZ;
1451 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1452 static inline void rtl8139_tune_twister (struct net_device *dev,
1453 struct rtl8139_private *tp) {}
1455 enum TwisterParamVals {
1456 PARA78_default = 0x78fa8388,
1457 PARA7c_default = 0xcb38de43, /* param[0][3] */
1458 PARA7c_xxx = 0xcb38de43,
1461 static const unsigned long param[4][4] = {
1462 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1463 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1464 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1465 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1468 static void rtl8139_tune_twister (struct net_device *dev,
1469 struct rtl8139_private *tp)
1472 void __iomem *ioaddr = tp->mmio_addr;
1474 /* This is a complicated state machine to configure the "twister" for
1475 impedance/echos based on the cable length.
1476 All of this is magic and undocumented.
1478 switch (tp->twistie) {
1480 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1481 /* We have link beat, let us tune the twister. */
1482 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1483 tp->twistie = 2; /* Change to state 2. */
1484 next_tick = HZ / 10;
1486 /* Just put in some reasonable defaults for when beat returns. */
1487 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1488 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1489 RTL_W32 (PARA78, PARA78_default);
1490 RTL_W32 (PARA7c, PARA7c_default);
1491 tp->twistie = 0; /* Bail from future actions. */
1495 /* Read how long it took to hear the echo. */
1496 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1497 if (linkcase == 0x7000)
1499 else if (linkcase == 0x3000)
1501 else if (linkcase == 0x1000)
1506 tp->twistie = 3; /* Change to state 2. */
1507 next_tick = HZ / 10;
1510 /* Put out four tuning parameters, one per 100msec. */
1511 if (tp->twist_col == 0)
1512 RTL_W16 (FIFOTMS, 0);
1513 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1514 [(int) tp->twist_col]);
1515 next_tick = HZ / 10;
1516 if (++tp->twist_col >= 4) {
1517 /* For short cables we are done.
1518 For long cables (row == 3) check for mistune. */
1520 (tp->twist_row == 3) ? 4 : 0;
1524 /* Special case for long cables: check for mistune. */
1525 if ((RTL_R16 (CSCR) &
1526 CSCR_LinkStatusBits) == 0x7000) {
1530 RTL_W32 (PARA7c, 0xfb38de03);
1532 next_tick = HZ / 10;
1536 /* Retune for shorter cable (column 2). */
1537 RTL_W32 (FIFOTMS, 0x20);
1538 RTL_W32 (PARA78, PARA78_default);
1539 RTL_W32 (PARA7c, PARA7c_default);
1540 RTL_W32 (FIFOTMS, 0x00);
1544 next_tick = HZ / 10;
1552 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1554 static inline void rtl8139_thread_iter (struct net_device *dev,
1555 struct rtl8139_private *tp,
1556 void __iomem *ioaddr)
1560 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1562 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1563 int duplex = (mii_lpa & LPA_100FULL)
1564 || (mii_lpa & 0x01C0) == 0x0040;
1565 if (tp->mii.full_duplex != duplex) {
1566 tp->mii.full_duplex = duplex;
1570 "%s: Setting %s-duplex based on MII #%d link"
1571 " partner ability of %4.4x.\n",
1573 tp->mii.full_duplex ? "full" : "half",
1574 tp->phys[0], mii_lpa);
1576 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1580 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1581 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1582 RTL_W8 (Cfg9346, Cfg9346_Lock);
1587 next_tick = HZ * 60;
1589 rtl8139_tune_twister (dev, tp);
1591 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1592 dev->name, RTL_R16 (NWayLPAR));
1593 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1594 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1595 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1596 dev->name, RTL_R8 (Config0),
1600 static void rtl8139_thread (struct work_struct *work)
1602 struct rtl8139_private *tp =
1603 container_of(work, struct rtl8139_private, thread.work);
1604 struct net_device *dev = tp->mii.dev;
1605 unsigned long thr_delay = next_tick;
1609 if (!netif_running(dev))
1612 if (tp->watchdog_fired) {
1613 tp->watchdog_fired = 0;
1614 rtl8139_tx_timeout_task(work);
1616 rtl8139_thread_iter(dev, tp, tp->mmio_addr);
1618 if (tp->have_thread)
1619 schedule_delayed_work(&tp->thread, thr_delay);
1624 static void rtl8139_start_thread(struct rtl8139_private *tp)
1627 if (tp->chipset == CH_8139_K)
1629 else if (tp->drv_flags & HAS_LNK_CHNG)
1632 tp->have_thread = 1;
1633 tp->watchdog_fired = 0;
1635 schedule_delayed_work(&tp->thread, next_tick);
1638 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1643 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1646 static void rtl8139_tx_timeout_task (struct work_struct *work)
1648 struct rtl8139_private *tp =
1649 container_of(work, struct rtl8139_private, thread.work);
1650 struct net_device *dev = tp->mii.dev;
1651 void __iomem *ioaddr = tp->mmio_addr;
1655 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1656 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1657 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1658 /* Emit info to figure out what went wrong. */
1659 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1660 dev->name, tp->cur_tx, tp->dirty_tx);
1661 for (i = 0; i < NUM_TX_DESC; i++)
1662 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1663 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1664 i == tp->dirty_tx % NUM_TX_DESC ?
1665 " (queue head)" : "");
1667 tp->xstats.tx_timeouts++;
1669 /* disable Tx ASAP, if not already */
1670 tmp8 = RTL_R8 (ChipCmd);
1671 if (tmp8 & CmdTxEnb)
1672 RTL_W8 (ChipCmd, CmdRxEnb);
1674 spin_lock_bh(&tp->rx_lock);
1675 /* Disable interrupts by clearing the interrupt mask. */
1676 RTL_W16 (IntrMask, 0x0000);
1678 /* Stop a shared interrupt from scavenging while we are. */
1679 spin_lock_irq(&tp->lock);
1680 rtl8139_tx_clear (tp);
1681 spin_unlock_irq(&tp->lock);
1683 /* ...and finally, reset everything */
1684 if (netif_running(dev)) {
1685 rtl8139_hw_start (dev);
1686 netif_wake_queue (dev);
1688 spin_unlock_bh(&tp->rx_lock);
1691 static void rtl8139_tx_timeout (struct net_device *dev)
1693 struct rtl8139_private *tp = netdev_priv(dev);
1695 tp->watchdog_fired = 1;
1696 if (!tp->have_thread) {
1697 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1698 schedule_delayed_work(&tp->thread, next_tick);
1702 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1704 struct rtl8139_private *tp = netdev_priv(dev);
1705 void __iomem *ioaddr = tp->mmio_addr;
1707 unsigned int len = skb->len;
1708 unsigned long flags;
1710 /* Calculate the next Tx descriptor entry. */
1711 entry = tp->cur_tx % NUM_TX_DESC;
1713 /* Note: the chip doesn't have auto-pad! */
1714 if (likely(len < TX_BUF_SIZE)) {
1716 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1717 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1721 dev->stats.tx_dropped++;
1725 spin_lock_irqsave(&tp->lock, flags);
1727 * Writing to TxStatus triggers a DMA transfer of the data
1728 * copied to tp->tx_buf[entry] above. Use a memory barrier
1729 * to make sure that the device sees the updated data.
1732 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1733 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1735 dev->trans_start = jiffies;
1739 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1740 netif_stop_queue (dev);
1741 spin_unlock_irqrestore(&tp->lock, flags);
1743 if (netif_msg_tx_queued(tp))
1744 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1745 dev->name, len, entry);
1751 static void rtl8139_tx_interrupt (struct net_device *dev,
1752 struct rtl8139_private *tp,
1753 void __iomem *ioaddr)
1755 unsigned long dirty_tx, tx_left;
1757 assert (dev != NULL);
1758 assert (ioaddr != NULL);
1760 dirty_tx = tp->dirty_tx;
1761 tx_left = tp->cur_tx - dirty_tx;
1762 while (tx_left > 0) {
1763 int entry = dirty_tx % NUM_TX_DESC;
1766 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1768 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1769 break; /* It still hasn't been Txed */
1771 /* Note: TxCarrierLost is always asserted at 100mbps. */
1772 if (txstatus & (TxOutOfWindow | TxAborted)) {
1773 /* There was an major error, log it. */
1774 if (netif_msg_tx_err(tp))
1775 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1776 dev->name, txstatus);
1777 dev->stats.tx_errors++;
1778 if (txstatus & TxAborted) {
1779 dev->stats.tx_aborted_errors++;
1780 RTL_W32 (TxConfig, TxClearAbt);
1781 RTL_W16 (IntrStatus, TxErr);
1784 if (txstatus & TxCarrierLost)
1785 dev->stats.tx_carrier_errors++;
1786 if (txstatus & TxOutOfWindow)
1787 dev->stats.tx_window_errors++;
1789 if (txstatus & TxUnderrun) {
1790 /* Add 64 to the Tx FIFO threshold. */
1791 if (tp->tx_flag < 0x00300000)
1792 tp->tx_flag += 0x00020000;
1793 dev->stats.tx_fifo_errors++;
1795 dev->stats.collisions += (txstatus >> 24) & 15;
1796 dev->stats.tx_bytes += txstatus & 0x7ff;
1797 dev->stats.tx_packets++;
1804 #ifndef RTL8139_NDEBUG
1805 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1806 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1807 dev->name, dirty_tx, tp->cur_tx);
1808 dirty_tx += NUM_TX_DESC;
1810 #endif /* RTL8139_NDEBUG */
1812 /* only wake the queue if we did work, and the queue is stopped */
1813 if (tp->dirty_tx != dirty_tx) {
1814 tp->dirty_tx = dirty_tx;
1816 netif_wake_queue (dev);
1821 /* TODO: clean this up! Rx reset need not be this intensive */
1822 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1823 struct rtl8139_private *tp, void __iomem *ioaddr)
1826 #ifdef CONFIG_8139_OLD_RX_RESET
1830 if (netif_msg_rx_err (tp))
1831 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1832 dev->name, rx_status);
1833 dev->stats.rx_errors++;
1834 if (!(rx_status & RxStatusOK)) {
1835 if (rx_status & RxTooLong) {
1836 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1837 dev->name, rx_status);
1838 /* A.C.: The chip hangs here. */
1840 if (rx_status & (RxBadSymbol | RxBadAlign))
1841 dev->stats.rx_frame_errors++;
1842 if (rx_status & (RxRunt | RxTooLong))
1843 dev->stats.rx_length_errors++;
1844 if (rx_status & RxCRCErr)
1845 dev->stats.rx_crc_errors++;
1847 tp->xstats.rx_lost_in_ring++;
1850 #ifndef CONFIG_8139_OLD_RX_RESET
1851 tmp8 = RTL_R8 (ChipCmd);
1852 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1853 RTL_W8 (ChipCmd, tmp8);
1854 RTL_W32 (RxConfig, tp->rx_config);
1857 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1859 /* disable receive */
1860 RTL_W8_F (ChipCmd, CmdTxEnb);
1862 while (--tmp_work > 0) {
1864 tmp8 = RTL_R8 (ChipCmd);
1865 if (!(tmp8 & CmdRxEnb))
1869 printk (KERN_WARNING PFX "rx stop wait too long\n");
1870 /* restart receive */
1872 while (--tmp_work > 0) {
1873 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1875 tmp8 = RTL_R8 (ChipCmd);
1876 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1880 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1882 /* and reinitialize all rx related registers */
1883 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1884 /* Must enable Tx/Rx before setting transfer thresholds! */
1885 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1887 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1888 RTL_W32 (RxConfig, tp->rx_config);
1891 DPRINTK("init buffer addresses\n");
1893 /* Lock Config[01234] and BMCR register writes */
1894 RTL_W8 (Cfg9346, Cfg9346_Lock);
1896 /* init Rx ring buffer DMA address */
1897 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1899 /* A.C.: Reset the multicast list. */
1900 __set_rx_mode (dev);
1905 static inline void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1906 u32 offset, unsigned int size)
1908 u32 left = RX_BUF_LEN - offset;
1911 skb_copy_to_linear_data(skb, ring + offset, left);
1912 skb_copy_to_linear_data_offset(skb, left, ring, size - left);
1914 skb_copy_to_linear_data(skb, ring + offset, size);
1918 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1920 void __iomem *ioaddr = tp->mmio_addr;
1923 status = RTL_R16 (IntrStatus) & RxAckBits;
1925 /* Clear out errors and receive interrupts */
1926 if (likely(status != 0)) {
1927 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1928 tp->dev->stats.rx_errors++;
1929 if (status & RxFIFOOver)
1930 tp->dev->stats.rx_fifo_errors++;
1932 RTL_W16_F (IntrStatus, RxAckBits);
1936 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1939 void __iomem *ioaddr = tp->mmio_addr;
1941 unsigned char *rx_ring = tp->rx_ring;
1942 unsigned int cur_rx = tp->cur_rx;
1943 unsigned int rx_size = 0;
1945 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1946 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1947 RTL_R16 (RxBufAddr),
1948 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1950 while (netif_running(dev) && received < budget
1951 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1952 u32 ring_offset = cur_rx % RX_BUF_LEN;
1954 unsigned int pkt_size;
1955 struct sk_buff *skb;
1959 /* read size+status of next frame from DMA ring buffer */
1960 rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset));
1961 rx_size = rx_status >> 16;
1962 pkt_size = rx_size - 4;
1964 if (netif_msg_rx_status(tp))
1965 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1966 " cur %4.4x.\n", dev->name, rx_status,
1968 #if RTL8139_DEBUG > 2
1971 DPRINTK ("%s: Frame contents ", dev->name);
1972 for (i = 0; i < 70; i++)
1974 rx_ring[ring_offset + i]);
1979 /* Packet copy from FIFO still in progress.
1980 * Theoretically, this should never happen
1981 * since EarlyRx is disabled.
1983 if (unlikely(rx_size == 0xfff0)) {
1984 if (!tp->fifo_copy_timeout)
1985 tp->fifo_copy_timeout = jiffies + 2;
1986 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1987 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1991 if (netif_msg_intr(tp)) {
1992 printk(KERN_DEBUG "%s: fifo copy in progress.",
1995 tp->xstats.early_rx++;
2000 tp->fifo_copy_timeout = 0;
2002 /* If Rx err or invalid rx_size/rx_status received
2003 * (which happens if we get lost in the ring),
2004 * Rx process gets reset, so we abort any further
2007 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2009 (!(rx_status & RxStatusOK)))) {
2010 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2015 /* Malloc up new buffer, compatible with net-2e. */
2016 /* Omit the four octet CRC from the length. */
2018 skb = netdev_alloc_skb(dev, pkt_size + NET_IP_ALIGN);
2020 skb_reserve (skb, NET_IP_ALIGN); /* 16 byte align the IP fields. */
2022 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2024 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
2026 skb_put (skb, pkt_size);
2028 skb->protocol = eth_type_trans (skb, dev);
2030 dev->last_rx = jiffies;
2031 dev->stats.rx_bytes += pkt_size;
2032 dev->stats.rx_packets++;
2034 netif_receive_skb (skb);
2036 if (net_ratelimit())
2037 printk (KERN_WARNING
2038 "%s: Memory squeeze, dropping packet.\n",
2040 dev->stats.rx_dropped++;
2044 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2045 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2047 rtl8139_isr_ack(tp);
2050 if (unlikely(!received || rx_size == 0xfff0))
2051 rtl8139_isr_ack(tp);
2053 #if RTL8139_DEBUG > 1
2054 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2055 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2056 RTL_R16 (RxBufAddr),
2057 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2060 tp->cur_rx = cur_rx;
2063 * The receive buffer should be mostly empty.
2064 * Tell NAPI to reenable the Rx irq.
2066 if (tp->fifo_copy_timeout)
2074 static void rtl8139_weird_interrupt (struct net_device *dev,
2075 struct rtl8139_private *tp,
2076 void __iomem *ioaddr,
2077 int status, int link_changed)
2079 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2082 assert (dev != NULL);
2083 assert (tp != NULL);
2084 assert (ioaddr != NULL);
2086 /* Update the error count. */
2087 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2088 RTL_W32 (RxMissed, 0);
2090 if ((status & RxUnderrun) && link_changed &&
2091 (tp->drv_flags & HAS_LNK_CHNG)) {
2092 rtl_check_media(dev, 0);
2093 status &= ~RxUnderrun;
2096 if (status & (RxUnderrun | RxErr))
2097 dev->stats.rx_errors++;
2099 if (status & PCSTimeout)
2100 dev->stats.rx_length_errors++;
2101 if (status & RxUnderrun)
2102 dev->stats.rx_fifo_errors++;
2103 if (status & PCIErr) {
2105 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2106 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2108 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2109 dev->name, pci_cmd_status);
2113 static int rtl8139_poll(struct napi_struct *napi, int budget)
2115 struct rtl8139_private *tp = container_of(napi, struct rtl8139_private, napi);
2116 struct net_device *dev = tp->dev;
2117 void __iomem *ioaddr = tp->mmio_addr;
2120 spin_lock(&tp->rx_lock);
2122 if (likely(RTL_R16(IntrStatus) & RxAckBits))
2123 work_done += rtl8139_rx(dev, tp, budget);
2125 if (work_done < budget) {
2126 unsigned long flags;
2128 * Order is important since data can get interrupted
2129 * again when we think we are done.
2131 spin_lock_irqsave(&tp->lock, flags);
2132 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2133 __netif_rx_complete(dev, napi);
2134 spin_unlock_irqrestore(&tp->lock, flags);
2136 spin_unlock(&tp->rx_lock);
2141 /* The interrupt handler does all of the Rx thread work and cleans up
2142 after the Tx thread. */
2143 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance)
2145 struct net_device *dev = (struct net_device *) dev_instance;
2146 struct rtl8139_private *tp = netdev_priv(dev);
2147 void __iomem *ioaddr = tp->mmio_addr;
2148 u16 status, ackstat;
2149 int link_changed = 0; /* avoid bogus "uninit" warning */
2152 spin_lock (&tp->lock);
2153 status = RTL_R16 (IntrStatus);
2156 if (unlikely((status & rtl8139_intr_mask) == 0))
2161 /* h/w no longer present (hotplug?) or major error, bail */
2162 if (unlikely(status == 0xFFFF))
2165 /* close possible race's with dev_close */
2166 if (unlikely(!netif_running(dev))) {
2167 RTL_W16 (IntrMask, 0);
2171 /* Acknowledge all of the current interrupt sources ASAP, but
2172 an first get an additional status bit from CSCR. */
2173 if (unlikely(status & RxUnderrun))
2174 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2176 ackstat = status & ~(RxAckBits | TxErr);
2178 RTL_W16 (IntrStatus, ackstat);
2180 /* Receive packets are processed by poll routine.
2181 If not running start it now. */
2182 if (status & RxAckBits){
2183 if (netif_rx_schedule_prep(dev, &tp->napi)) {
2184 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2185 __netif_rx_schedule(dev, &tp->napi);
2189 /* Check uncommon events with one test. */
2190 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2191 rtl8139_weird_interrupt (dev, tp, ioaddr,
2192 status, link_changed);
2194 if (status & (TxOK | TxErr)) {
2195 rtl8139_tx_interrupt (dev, tp, ioaddr);
2197 RTL_W16 (IntrStatus, TxErr);
2200 spin_unlock (&tp->lock);
2202 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2203 dev->name, RTL_R16 (IntrStatus));
2204 return IRQ_RETVAL(handled);
2207 #ifdef CONFIG_NET_POLL_CONTROLLER
2209 * Polling receive - used by netconsole and other diagnostic tools
2210 * to allow network i/o with interrupts disabled.
2212 static void rtl8139_poll_controller(struct net_device *dev)
2214 disable_irq(dev->irq);
2215 rtl8139_interrupt(dev->irq, dev);
2216 enable_irq(dev->irq);
2220 static int rtl8139_close (struct net_device *dev)
2222 struct rtl8139_private *tp = netdev_priv(dev);
2223 void __iomem *ioaddr = tp->mmio_addr;
2224 unsigned long flags;
2226 netif_stop_queue(dev);
2227 napi_disable(&tp->napi);
2229 if (netif_msg_ifdown(tp))
2230 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2231 dev->name, RTL_R16 (IntrStatus));
2233 spin_lock_irqsave (&tp->lock, flags);
2235 /* Stop the chip's Tx and Rx DMA processes. */
2236 RTL_W8 (ChipCmd, 0);
2238 /* Disable interrupts by clearing the interrupt mask. */
2239 RTL_W16 (IntrMask, 0);
2241 /* Update the error counts. */
2242 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2243 RTL_W32 (RxMissed, 0);
2245 spin_unlock_irqrestore (&tp->lock, flags);
2247 free_irq (dev->irq, dev);
2249 rtl8139_tx_clear (tp);
2251 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
2252 tp->rx_ring, tp->rx_ring_dma);
2253 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
2254 tp->tx_bufs, tp->tx_bufs_dma);
2258 /* Green! Put the chip in low-power mode. */
2259 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2261 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2262 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2268 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2269 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2270 other threads or interrupts aren't messing with the 8139. */
2271 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2273 struct rtl8139_private *np = netdev_priv(dev);
2274 void __iomem *ioaddr = np->mmio_addr;
2276 spin_lock_irq(&np->lock);
2277 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2278 u8 cfg3 = RTL_R8 (Config3);
2279 u8 cfg5 = RTL_R8 (Config5);
2281 wol->supported = WAKE_PHY | WAKE_MAGIC
2282 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2285 if (cfg3 & Cfg3_LinkUp)
2286 wol->wolopts |= WAKE_PHY;
2287 if (cfg3 & Cfg3_Magic)
2288 wol->wolopts |= WAKE_MAGIC;
2289 /* (KON)FIXME: See how netdev_set_wol() handles the
2290 following constants. */
2291 if (cfg5 & Cfg5_UWF)
2292 wol->wolopts |= WAKE_UCAST;
2293 if (cfg5 & Cfg5_MWF)
2294 wol->wolopts |= WAKE_MCAST;
2295 if (cfg5 & Cfg5_BWF)
2296 wol->wolopts |= WAKE_BCAST;
2298 spin_unlock_irq(&np->lock);
2302 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2303 that wol points to kernel memory and other threads or interrupts
2304 aren't messing with the 8139. */
2305 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2307 struct rtl8139_private *np = netdev_priv(dev);
2308 void __iomem *ioaddr = np->mmio_addr;
2312 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2313 ? (WAKE_PHY | WAKE_MAGIC
2314 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2316 if (wol->wolopts & ~support)
2319 spin_lock_irq(&np->lock);
2320 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2321 if (wol->wolopts & WAKE_PHY)
2322 cfg3 |= Cfg3_LinkUp;
2323 if (wol->wolopts & WAKE_MAGIC)
2325 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2326 RTL_W8 (Config3, cfg3);
2327 RTL_W8 (Cfg9346, Cfg9346_Lock);
2329 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2330 /* (KON)FIXME: These are untested. We may have to set the
2331 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2333 if (wol->wolopts & WAKE_UCAST)
2335 if (wol->wolopts & WAKE_MCAST)
2337 if (wol->wolopts & WAKE_BCAST)
2339 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2340 spin_unlock_irq(&np->lock);
2345 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2347 struct rtl8139_private *np = netdev_priv(dev);
2348 strcpy(info->driver, DRV_NAME);
2349 strcpy(info->version, DRV_VERSION);
2350 strcpy(info->bus_info, pci_name(np->pci_dev));
2351 info->regdump_len = np->regs_len;
2354 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2356 struct rtl8139_private *np = netdev_priv(dev);
2357 spin_lock_irq(&np->lock);
2358 mii_ethtool_gset(&np->mii, cmd);
2359 spin_unlock_irq(&np->lock);
2363 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2365 struct rtl8139_private *np = netdev_priv(dev);
2367 spin_lock_irq(&np->lock);
2368 rc = mii_ethtool_sset(&np->mii, cmd);
2369 spin_unlock_irq(&np->lock);
2373 static int rtl8139_nway_reset(struct net_device *dev)
2375 struct rtl8139_private *np = netdev_priv(dev);
2376 return mii_nway_restart(&np->mii);
2379 static u32 rtl8139_get_link(struct net_device *dev)
2381 struct rtl8139_private *np = netdev_priv(dev);
2382 return mii_link_ok(&np->mii);
2385 static u32 rtl8139_get_msglevel(struct net_device *dev)
2387 struct rtl8139_private *np = netdev_priv(dev);
2388 return np->msg_enable;
2391 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2393 struct rtl8139_private *np = netdev_priv(dev);
2394 np->msg_enable = datum;
2397 static int rtl8139_get_regs_len(struct net_device *dev)
2399 struct rtl8139_private *np;
2400 /* TODO: we are too slack to do reg dumping for pio, for now */
2403 np = netdev_priv(dev);
2404 return np->regs_len;
2407 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2409 struct rtl8139_private *np;
2411 /* TODO: we are too slack to do reg dumping for pio, for now */
2414 np = netdev_priv(dev);
2416 regs->version = RTL_REGS_VER;
2418 spin_lock_irq(&np->lock);
2419 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2420 spin_unlock_irq(&np->lock);
2423 static int rtl8139_get_sset_count(struct net_device *dev, int sset)
2427 return RTL_NUM_STATS;
2433 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2435 struct rtl8139_private *np = netdev_priv(dev);
2437 data[0] = np->xstats.early_rx;
2438 data[1] = np->xstats.tx_buf_mapped;
2439 data[2] = np->xstats.tx_timeouts;
2440 data[3] = np->xstats.rx_lost_in_ring;
2443 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2445 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2448 static const struct ethtool_ops rtl8139_ethtool_ops = {
2449 .get_drvinfo = rtl8139_get_drvinfo,
2450 .get_settings = rtl8139_get_settings,
2451 .set_settings = rtl8139_set_settings,
2452 .get_regs_len = rtl8139_get_regs_len,
2453 .get_regs = rtl8139_get_regs,
2454 .nway_reset = rtl8139_nway_reset,
2455 .get_link = rtl8139_get_link,
2456 .get_msglevel = rtl8139_get_msglevel,
2457 .set_msglevel = rtl8139_set_msglevel,
2458 .get_wol = rtl8139_get_wol,
2459 .set_wol = rtl8139_set_wol,
2460 .get_strings = rtl8139_get_strings,
2461 .get_sset_count = rtl8139_get_sset_count,
2462 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2465 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2467 struct rtl8139_private *np = netdev_priv(dev);
2470 if (!netif_running(dev))
2473 spin_lock_irq(&np->lock);
2474 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2475 spin_unlock_irq(&np->lock);
2481 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2483 struct rtl8139_private *tp = netdev_priv(dev);
2484 void __iomem *ioaddr = tp->mmio_addr;
2485 unsigned long flags;
2487 if (netif_running(dev)) {
2488 spin_lock_irqsave (&tp->lock, flags);
2489 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2490 RTL_W32 (RxMissed, 0);
2491 spin_unlock_irqrestore (&tp->lock, flags);
2497 /* Set or clear the multicast filter for this adaptor.
2498 This routine is not state sensitive and need not be SMP locked. */
2500 static void __set_rx_mode (struct net_device *dev)
2502 struct rtl8139_private *tp = netdev_priv(dev);
2503 void __iomem *ioaddr = tp->mmio_addr;
2504 u32 mc_filter[2]; /* Multicast hash filter */
2508 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2509 dev->name, dev->flags, RTL_R32 (RxConfig));
2511 /* Note: do not reorder, GCC is clever about common statements. */
2512 if (dev->flags & IFF_PROMISC) {
2514 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2516 mc_filter[1] = mc_filter[0] = 0xffffffff;
2517 } else if ((dev->mc_count > multicast_filter_limit)
2518 || (dev->flags & IFF_ALLMULTI)) {
2519 /* Too many to filter perfectly -- accept all multicasts. */
2520 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2521 mc_filter[1] = mc_filter[0] = 0xffffffff;
2523 struct dev_mc_list *mclist;
2524 rx_mode = AcceptBroadcast | AcceptMyPhys;
2525 mc_filter[1] = mc_filter[0] = 0;
2526 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2527 i++, mclist = mclist->next) {
2528 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2530 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2531 rx_mode |= AcceptMulticast;
2535 /* We can safely update without stopping the chip. */
2536 tmp = rtl8139_rx_config | rx_mode;
2537 if (tp->rx_config != tmp) {
2538 RTL_W32_F (RxConfig, tmp);
2539 tp->rx_config = tmp;
2541 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2542 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2545 static void rtl8139_set_rx_mode (struct net_device *dev)
2547 unsigned long flags;
2548 struct rtl8139_private *tp = netdev_priv(dev);
2550 spin_lock_irqsave (&tp->lock, flags);
2552 spin_unlock_irqrestore (&tp->lock, flags);
2557 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2559 struct net_device *dev = pci_get_drvdata (pdev);
2560 struct rtl8139_private *tp = netdev_priv(dev);
2561 void __iomem *ioaddr = tp->mmio_addr;
2562 unsigned long flags;
2564 pci_save_state (pdev);
2566 if (!netif_running (dev))
2569 netif_device_detach (dev);
2571 spin_lock_irqsave (&tp->lock, flags);
2573 /* Disable interrupts, stop Tx and Rx. */
2574 RTL_W16 (IntrMask, 0);
2575 RTL_W8 (ChipCmd, 0);
2577 /* Update the error counts. */
2578 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2579 RTL_W32 (RxMissed, 0);
2581 spin_unlock_irqrestore (&tp->lock, flags);
2583 pci_set_power_state (pdev, PCI_D3hot);
2589 static int rtl8139_resume (struct pci_dev *pdev)
2591 struct net_device *dev = pci_get_drvdata (pdev);
2593 pci_restore_state (pdev);
2594 if (!netif_running (dev))
2596 pci_set_power_state (pdev, PCI_D0);
2597 rtl8139_init_ring (dev);
2598 rtl8139_hw_start (dev);
2599 netif_device_attach (dev);
2603 #endif /* CONFIG_PM */
2606 static struct pci_driver rtl8139_pci_driver = {
2608 .id_table = rtl8139_pci_tbl,
2609 .probe = rtl8139_init_one,
2610 .remove = __devexit_p(rtl8139_remove_one),
2612 .suspend = rtl8139_suspend,
2613 .resume = rtl8139_resume,
2614 #endif /* CONFIG_PM */
2618 static int __init rtl8139_init_module (void)
2620 /* when we're a module, we always print a version message,
2621 * even if no 8139 board is found.
2624 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2627 return pci_register_driver(&rtl8139_pci_driver);
2631 static void __exit rtl8139_cleanup_module (void)
2633 pci_unregister_driver (&rtl8139_pci_driver);
2637 module_init(rtl8139_init_module);
2638 module_exit(rtl8139_cleanup_module);