3 8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux.
5 Maintained by Jeff Garzik <jgarzik@pobox.com>
6 Copyright 2000-2002 Jeff Garzik
8 Much code comes from Donald Becker's rtl8139.c driver,
9 versions 1.13 and older. This driver was originally based
10 on rtl8139.c version 1.07. Header of rtl8139.c version 1.13:
14 Written 1997-2001 by Donald Becker.
15 This software may be used and distributed according to the
16 terms of the GNU General Public License (GPL), incorporated
17 herein by reference. Drivers based on or derived from this
18 code fall under the GPL and must retain the authorship,
19 copyright and license notice. This file is not a complete
20 program and may only be used when the entire operating
21 system is licensed under the GPL.
23 This driver is for boards based on the RTL8129 and RTL8139
26 The author may be reached as becker@scyld.com, or C/O Scyld
27 Computing Corporation 410 Severn Ave., Suite 210 Annapolis
30 Support and updates available at
31 http://www.scyld.com/network/rtl8139.html
33 Twister-tuning table provided by Kinston
34 <shangh@realtek.com.tw>.
38 This software may be used and distributed according to the terms
39 of the GNU General Public License, incorporated herein by reference.
43 Donald Becker - he wrote the original driver, kudos to him!
44 (but please don't e-mail him for support, this isn't his driver)
46 Tigran Aivazian - bug fixes, skbuff free cleanup
48 Martin Mares - suggestions for PCI cleanup
50 David S. Miller - PCI DMA and softnet updates
52 Ernst Gill - fixes ported from BSD driver
54 Daniel Kobras - identified specific locations of
55 posted MMIO write bugginess
57 Gerard Sharp - bug fix, testing and feedback
59 David Ford - Rx ring wrap fix
61 Dan DeMaggio - swapped RTL8139 cards with me, and allowed me
62 to find and fix a crucial bug on older chipsets.
64 Donald Becker/Chris Butterworth/Marcus Westergren -
65 Noticed various Rx packet size-related buglets.
67 Santiago Garcia Mantinan - testing and feedback
69 Jens David - 2.2.x kernel backports
71 Martin Dennett - incredibly helpful insight on undocumented
72 features of the 8139 chips
74 Jean-Jacques Michel - bug fix
76 Tobias Ringström - Rx interrupt status checking suggestion
78 Andrew Morton - Clear blocked signals, avoid
79 buffer overrun setting current->comm.
81 Kalle Olavi Niemitalo - Wake-on-LAN ioctls
83 Robert Kuebel - Save kernel thread from dying on any signal.
85 Submitting bug reports:
87 "rtl8139-diag -mmmaaavvveefN" output
88 enable RTL8139_DEBUG below, and look at 'dmesg' or kernel log
92 #define DRV_NAME "8139too"
93 #define DRV_VERSION "0.9.27"
96 #include <linux/config.h>
97 #include <linux/module.h>
98 #include <linux/kernel.h>
99 #include <linux/compiler.h>
100 #include <linux/pci.h>
101 #include <linux/init.h>
102 #include <linux/ioport.h>
103 #include <linux/netdevice.h>
104 #include <linux/etherdevice.h>
105 #include <linux/rtnetlink.h>
106 #include <linux/delay.h>
107 #include <linux/ethtool.h>
108 #include <linux/mii.h>
109 #include <linux/completion.h>
110 #include <linux/crc32.h>
112 #include <asm/uaccess.h>
115 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
116 #define PFX DRV_NAME ": "
118 /* Default Message level */
119 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
124 /* enable PIO instead of MMIO, if CONFIG_8139TOO_PIO is selected */
125 #ifdef CONFIG_8139TOO_PIO
129 /* define to 1, 2 or 3 to enable copious debugging info */
130 #define RTL8139_DEBUG 0
132 /* define to 1 to disable lightweight runtime debugging checks */
133 #undef RTL8139_NDEBUG
137 /* note: prints function name for you */
138 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
140 # define DPRINTK(fmt, args...)
143 #ifdef RTL8139_NDEBUG
144 # define assert(expr) do {} while (0)
146 # define assert(expr) \
147 if(unlikely(!(expr))) { \
148 printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
149 #expr,__FILE__,__FUNCTION__,__LINE__); \
154 /* A few user-configurable values. */
157 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
158 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
160 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
161 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
162 static int multicast_filter_limit = 32;
164 /* bitmapped message enable number */
165 static int debug = -1;
169 * Warning: 64K ring has hardware issues and may lock up.
171 #if defined(CONFIG_SH_DREAMCAST)
172 #define RX_BUF_IDX 1 /* 16K ring */
174 #define RX_BUF_IDX 2 /* 32K ring */
176 #define RX_BUF_LEN (8192 << RX_BUF_IDX)
177 #define RX_BUF_PAD 16
178 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
180 #if RX_BUF_LEN == 65536
181 #define RX_BUF_TOT_LEN RX_BUF_LEN
183 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
186 /* Number of Tx descriptor registers. */
187 #define NUM_TX_DESC 4
189 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
190 #define MAX_ETH_FRAME_SIZE 1536
192 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
193 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
194 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
196 /* PCI Tuning Parameters
197 Threshold is bytes transferred to chip before transmission starts. */
198 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
200 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
201 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
202 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */
203 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
204 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */
206 /* Operational parameters that usually are not changed. */
207 /* Time in jiffies before concluding the transmitter is hung. */
208 #define TX_TIMEOUT (6*HZ)
212 HAS_MII_XCVR = 0x010000,
213 HAS_CHIP_XCVR = 0x020000,
214 HAS_LNK_CHNG = 0x040000,
217 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */
218 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */
219 #define RTL_MIN_IO_SIZE 0x80
220 #define RTL8139B_IO_SIZE 256
222 #define RTL8129_CAPS HAS_MII_XCVR
223 #define RTL8139_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG
231 /* indexed by board_t, above */
235 } board_info[] __devinitdata = {
236 { "RealTek RTL8139", RTL8139_CAPS },
237 { "RealTek RTL8129", RTL8129_CAPS },
241 static struct pci_device_id rtl8139_pci_tbl[] = {
242 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
243 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
244 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
245 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
246 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
247 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
248 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
249 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
250 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
251 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
252 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
253 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
254 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
255 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
256 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
257 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
258 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
259 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
260 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
262 #ifdef CONFIG_SH_SECUREEDGE5410
263 /* Bogus 8139 silicon reports 8129 without external PROM :-( */
264 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
266 #ifdef CONFIG_8139TOO_8129
267 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 },
270 /* some crazy cards report invalid vendor ids like
271 * 0x0001 here. The other ids are valid and constant,
272 * so we simply don't match on the main vendor id.
274 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 },
275 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 },
276 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 },
280 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl);
283 const char str[ETH_GSTRING_LEN];
284 } ethtool_stats_keys[] = {
288 { "rx_lost_in_ring" },
291 /* The rest of these values should never change. */
293 /* Symbolic offsets to registers. */
294 enum RTL8139_registers {
295 MAC0 = 0, /* Ethernet hardware address. */
296 MAR0 = 8, /* Multicast filter. */
297 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
298 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
307 Timer = 0x48, /* A general-purpose counter. */
308 RxMissed = 0x4C, /* 24 bits valid, write clears. */
315 Config4 = 0x5A, /* absent on RTL-8139A */
319 BasicModeCtrl = 0x62,
320 BasicModeStatus = 0x64,
323 NWayExpansion = 0x6A,
324 /* Undocumented registers, but required for proper operation. */
325 FIFOTMS = 0x70, /* FIFO Control and test. */
326 CSCR = 0x74, /* Chip Status and Configuration Register. */
328 PARA7c = 0x7c, /* Magic transceiver parameter register. */
329 Config5 = 0xD8, /* absent on RTL-8139A */
333 MultiIntrClear = 0xF000,
335 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
345 /* Interrupt register bits, using my own meaningful names. */
346 enum IntrStatusBits {
357 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
364 TxOutOfWindow = 0x20000000,
365 TxAborted = 0x40000000,
366 TxCarrierLost = 0x80000000,
369 RxMulticast = 0x8000,
371 RxBroadcast = 0x2000,
372 RxBadSymbol = 0x0020,
380 /* Bits in RxConfig. */
384 AcceptBroadcast = 0x08,
385 AcceptMulticast = 0x04,
387 AcceptAllPhys = 0x01,
390 /* Bits in TxConfig. */
391 enum tx_config_bits {
393 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
395 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
396 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
397 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
398 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
400 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
401 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
402 TxClearAbt = (1 << 0), /* Clear abort (WO) */
403 TxDMAShift = 8, /* DMA burst value (0-7) is shifted this many bits */
404 TxRetryShift = 4, /* TXRR value (0-15) is shifted this many bits */
406 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
409 /* Bits in Config1 */
411 Cfg1_PM_Enable = 0x01,
412 Cfg1_VPD_Enable = 0x02,
415 LWAKE = 0x10, /* not on 8139, 8139A */
416 Cfg1_Driver_Load = 0x20,
419 SLEEP = (1 << 1), /* only on 8139, 8139A */
420 PWRDN = (1 << 0), /* only on 8139, 8139A */
423 /* Bits in Config3 */
425 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
426 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
427 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
428 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
429 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
430 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
431 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
432 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
435 /* Bits in Config4 */
437 LWPTN = (1 << 2), /* not on 8139, 8139A */
440 /* Bits in Config5 */
442 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
443 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
444 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
445 Cfg5_FIFOAddrPtr = (1 << 3), /* Realtek internal SRAM testing */
446 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
447 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
448 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
452 /* rx fifo threshold */
454 RxCfgFIFONone = (7 << RxCfgFIFOShift),
458 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
460 /* rx ring buffer length */
462 RxCfgRcv16K = (1 << 11),
463 RxCfgRcv32K = (1 << 12),
464 RxCfgRcv64K = (1 << 11) | (1 << 12),
466 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
470 /* Twister tuning parameters from RealTek.
471 Completely undocumented, but required to tune bad links on some boards. */
473 CSCR_LinkOKBit = 0x0400,
474 CSCR_LinkChangeBit = 0x0800,
475 CSCR_LinkStatusBits = 0x0f000,
476 CSCR_LinkDownOffCmd = 0x003c0,
477 CSCR_LinkDownCmd = 0x0f3c0,
482 Cfg9346_Unlock = 0xC0,
499 HasHltClk = (1 << 0),
503 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
504 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
505 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
507 /* directly indexed by chip_t, above */
508 const static struct {
510 u32 version; /* from RTL8139C/RTL8139D docs */
512 } rtl_chip_info[] = {
514 HW_REVID(1, 0, 0, 0, 0, 0, 0),
519 HW_REVID(1, 1, 0, 0, 0, 0, 0),
524 HW_REVID(1, 1, 1, 0, 0, 0, 0),
525 HasHltClk, /* XXX undocumented? */
529 HW_REVID(1, 1, 1, 0, 0, 1, 0),
530 HasHltClk, /* XXX undocumented? */
534 HW_REVID(1, 1, 1, 1, 0, 0, 0),
539 HW_REVID(1, 1, 1, 1, 1, 0, 0),
544 HW_REVID(1, 1, 1, 0, 1, 0, 0),
549 HW_REVID(1, 1, 1, 1, 0, 1, 0),
554 HW_REVID(1, 1, 1, 0, 1, 0, 1),
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 net_device_stats stats;
578 unsigned char *rx_ring;
579 unsigned int cur_rx; /* Index into the Rx buffer of next Rx pkt. */
580 unsigned int tx_flag;
581 unsigned long cur_tx;
582 unsigned long dirty_tx;
583 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
584 unsigned char *tx_bufs; /* Tx bounce buffer region. */
585 dma_addr_t rx_ring_dma;
586 dma_addr_t tx_bufs_dma;
587 signed char phys[4]; /* MII device addresses. */
588 char twistie, twist_row, twist_col; /* Twister tune state. */
589 unsigned int default_port:4; /* Last dev->if_port value. */
594 wait_queue_head_t thr_wait;
595 struct completion thr_exited;
597 struct rtl_extra_stats xstats;
599 struct mii_if_info mii;
600 unsigned int regs_len;
601 unsigned long fifo_copy_timeout;
604 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
605 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
606 MODULE_LICENSE("GPL");
607 MODULE_VERSION(DRV_VERSION);
609 module_param(multicast_filter_limit, int, 0);
610 module_param_array(media, int, NULL, 0);
611 module_param_array(full_duplex, int, NULL, 0);
612 module_param(debug, int, 0);
613 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
614 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
615 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
616 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
618 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
619 static int rtl8139_open (struct net_device *dev);
620 static int mdio_read (struct net_device *dev, int phy_id, int location);
621 static void mdio_write (struct net_device *dev, int phy_id, int location,
623 static void rtl8139_start_thread(struct net_device *dev);
624 static void rtl8139_tx_timeout (struct net_device *dev);
625 static void rtl8139_init_ring (struct net_device *dev);
626 static int rtl8139_start_xmit (struct sk_buff *skb,
627 struct net_device *dev);
628 static int rtl8139_poll(struct net_device *dev, int *budget);
629 #ifdef CONFIG_NET_POLL_CONTROLLER
630 static void rtl8139_poll_controller(struct net_device *dev);
632 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
633 struct pt_regs *regs);
634 static int rtl8139_close (struct net_device *dev);
635 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
636 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
637 static void rtl8139_set_rx_mode (struct net_device *dev);
638 static void __set_rx_mode (struct net_device *dev);
639 static void rtl8139_hw_start (struct net_device *dev);
640 static struct ethtool_ops rtl8139_ethtool_ops;
642 /* write MMIO register, with flush */
643 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
644 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
645 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
646 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
649 #define MMIO_FLUSH_AUDIT_COMPLETE 1
650 #if MMIO_FLUSH_AUDIT_COMPLETE
652 /* write MMIO register */
653 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
654 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
655 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
659 /* write MMIO register, then flush */
660 #define RTL_W8 RTL_W8_F
661 #define RTL_W16 RTL_W16_F
662 #define RTL_W32 RTL_W32_F
664 #endif /* MMIO_FLUSH_AUDIT_COMPLETE */
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);
718 ioport_unmap (tp->mmio_addr);
721 pci_iounmap (pdev, tp->mmio_addr);
722 #endif /* USE_IO_OPS */
724 /* it's ok to call this even if we have no regions to free */
725 pci_release_regions (pdev);
728 pci_set_drvdata (pdev, NULL);
732 static void rtl8139_chip_reset (void __iomem *ioaddr)
736 /* Soft reset the chip. */
737 RTL_W8 (ChipCmd, CmdReset);
739 /* Check that the chip has finished the reset. */
740 for (i = 1000; i > 0; i--) {
742 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
749 static int __devinit rtl8139_init_board (struct pci_dev *pdev,
750 struct net_device **dev_out)
752 void __iomem *ioaddr;
753 struct net_device *dev;
754 struct rtl8139_private *tp;
756 int rc, disable_dev_on_err = 0;
758 unsigned long pio_start, pio_end, pio_flags, pio_len;
759 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
762 assert (pdev != NULL);
766 /* dev and priv zeroed in alloc_etherdev */
767 dev = alloc_etherdev (sizeof (*tp));
769 printk (KERN_ERR PFX "%s: Unable to alloc new net device\n", pci_name(pdev));
772 SET_MODULE_OWNER(dev);
773 SET_NETDEV_DEV(dev, &pdev->dev);
775 tp = netdev_priv(dev);
778 /* enable device (incl. PCI PM wakeup and hotplug setup) */
779 rc = pci_enable_device (pdev);
783 pio_start = pci_resource_start (pdev, 0);
784 pio_end = pci_resource_end (pdev, 0);
785 pio_flags = pci_resource_flags (pdev, 0);
786 pio_len = pci_resource_len (pdev, 0);
788 mmio_start = pci_resource_start (pdev, 1);
789 mmio_end = pci_resource_end (pdev, 1);
790 mmio_flags = pci_resource_flags (pdev, 1);
791 mmio_len = pci_resource_len (pdev, 1);
793 /* set this immediately, we need to know before
794 * we talk to the chip directly */
795 DPRINTK("PIO region size == 0x%02X\n", pio_len);
796 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
799 /* make sure PCI base addr 0 is PIO */
800 if (!(pio_flags & IORESOURCE_IO)) {
801 printk (KERN_ERR PFX "%s: region #0 not a PIO resource, aborting\n", pci_name(pdev));
805 /* check for weird/broken PCI region reporting */
806 if (pio_len < RTL_MIN_IO_SIZE) {
807 printk (KERN_ERR PFX "%s: Invalid PCI I/O region size(s), aborting\n", pci_name(pdev));
812 /* make sure PCI base addr 1 is MMIO */
813 if (!(mmio_flags & IORESOURCE_MEM)) {
814 printk (KERN_ERR PFX "%s: region #1 not an MMIO resource, aborting\n", pci_name(pdev));
818 if (mmio_len < RTL_MIN_IO_SIZE) {
819 printk (KERN_ERR PFX "%s: Invalid PCI mem region size(s), aborting\n", pci_name(pdev));
825 rc = pci_request_regions (pdev, "8139too");
828 disable_dev_on_err = 1;
830 /* enable PCI bus-mastering */
831 pci_set_master (pdev);
834 ioaddr = ioport_map(pio_start, pio_len);
836 printk (KERN_ERR PFX "%s: cannot map PIO, aborting\n", pci_name(pdev));
840 dev->base_addr = pio_start;
841 tp->mmio_addr = ioaddr;
842 tp->regs_len = pio_len;
844 /* ioremap MMIO region */
845 ioaddr = pci_iomap(pdev, 1, 0);
846 if (ioaddr == NULL) {
847 printk (KERN_ERR PFX "%s: cannot remap MMIO, aborting\n", pci_name(pdev));
851 dev->base_addr = (long) ioaddr;
852 tp->mmio_addr = ioaddr;
853 tp->regs_len = mmio_len;
854 #endif /* USE_IO_OPS */
856 /* Bring old chips out of low-power mode. */
857 RTL_W8 (HltClk, 'R');
859 /* check for missing/broken hardware */
860 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
861 printk (KERN_ERR PFX "%s: Chip not responding, ignoring board\n",
867 /* identify chip attached to board */
868 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
869 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
870 if (version == rtl_chip_info[i].version) {
875 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
876 printk (KERN_DEBUG PFX "%s: unknown chip version, assuming RTL-8139\n",
878 printk (KERN_DEBUG PFX "%s: TxConfig = 0x%lx\n", pci_name(pdev), RTL_R32 (TxConfig));
882 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
883 version, i, rtl_chip_info[i].name);
885 if (tp->chipset >= CH_8139B) {
886 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
887 DPRINTK("PCI PM wakeup\n");
888 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
891 new_tmp8 |= Cfg1_PM_Enable;
892 if (new_tmp8 != tmp8) {
893 RTL_W8 (Cfg9346, Cfg9346_Unlock);
894 RTL_W8 (Config1, tmp8);
895 RTL_W8 (Cfg9346, Cfg9346_Lock);
897 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
898 tmp8 = RTL_R8 (Config4);
900 RTL_W8 (Cfg9346, Cfg9346_Unlock);
901 RTL_W8 (Config4, tmp8 & ~LWPTN);
902 RTL_W8 (Cfg9346, Cfg9346_Lock);
906 DPRINTK("Old chip wakeup\n");
907 tmp8 = RTL_R8 (Config1);
908 tmp8 &= ~(SLEEP | PWRDN);
909 RTL_W8 (Config1, tmp8);
912 rtl8139_chip_reset (ioaddr);
918 __rtl8139_cleanup_dev (dev);
919 if (disable_dev_on_err)
920 pci_disable_device (pdev);
925 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
926 const struct pci_device_id *ent)
928 struct net_device *dev = NULL;
929 struct rtl8139_private *tp;
930 int i, addr_len, option;
931 void __iomem *ioaddr;
932 static int board_idx = -1;
935 assert (pdev != NULL);
936 assert (ent != NULL);
940 /* when we're built into the kernel, the driver version message
941 * is only printed if at least one 8139 board has been found
945 static int printed_version;
946 if (!printed_version++)
947 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
951 pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
953 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
954 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev >= 0x20) {
955 printk(KERN_INFO PFX "pci dev %s (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
956 pci_name(pdev), pdev->vendor, pdev->device, pci_rev);
957 printk(KERN_INFO PFX "Use the \"8139cp\" driver for improved performance and stability.\n");
960 i = rtl8139_init_board (pdev, &dev);
964 assert (dev != NULL);
965 tp = netdev_priv(dev);
967 ioaddr = tp->mmio_addr;
968 assert (ioaddr != NULL);
970 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
971 for (i = 0; i < 3; i++)
972 ((u16 *) (dev->dev_addr))[i] =
973 le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len));
974 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
976 /* The Rtl8139-specific entries in the device structure. */
977 dev->open = rtl8139_open;
978 dev->hard_start_xmit = rtl8139_start_xmit;
979 dev->poll = rtl8139_poll;
981 dev->stop = rtl8139_close;
982 dev->get_stats = rtl8139_get_stats;
983 dev->set_multicast_list = rtl8139_set_rx_mode;
984 dev->do_ioctl = netdev_ioctl;
985 dev->ethtool_ops = &rtl8139_ethtool_ops;
986 dev->tx_timeout = rtl8139_tx_timeout;
987 dev->watchdog_timeo = TX_TIMEOUT;
988 #ifdef CONFIG_NET_POLL_CONTROLLER
989 dev->poll_controller = rtl8139_poll_controller;
992 /* note: the hardware is not capable of sg/csum/highdma, however
993 * through the use of skb_copy_and_csum_dev we enable these
996 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
998 dev->irq = pdev->irq;
1000 /* tp zeroed and aligned in alloc_etherdev */
1001 tp = netdev_priv(dev);
1003 /* note: tp->chipset set in rtl8139_init_board */
1004 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1005 tp->mmio_addr = ioaddr;
1007 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1008 spin_lock_init (&tp->lock);
1009 spin_lock_init (&tp->rx_lock);
1010 init_waitqueue_head (&tp->thr_wait);
1011 init_completion (&tp->thr_exited);
1013 tp->mii.mdio_read = mdio_read;
1014 tp->mii.mdio_write = mdio_write;
1015 tp->mii.phy_id_mask = 0x3f;
1016 tp->mii.reg_num_mask = 0x1f;
1018 /* dev is fully set up and ready to use now */
1019 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1020 i = register_netdev (dev);
1021 if (i) goto err_out;
1023 pci_set_drvdata (pdev, dev);
1025 printk (KERN_INFO "%s: %s at 0x%lx, "
1026 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1029 board_info[ent->driver_data].name,
1031 dev->dev_addr[0], dev->dev_addr[1],
1032 dev->dev_addr[2], dev->dev_addr[3],
1033 dev->dev_addr[4], dev->dev_addr[5],
1036 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
1037 dev->name, rtl_chip_info[tp->chipset].name);
1039 /* Find the connected MII xcvrs.
1040 Doing this in open() would allow detecting external xcvrs later, but
1041 takes too much time. */
1042 #ifdef CONFIG_8139TOO_8129
1043 if (tp->drv_flags & HAS_MII_XCVR) {
1044 int phy, phy_idx = 0;
1045 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1046 int mii_status = mdio_read(dev, phy, 1);
1047 if (mii_status != 0xffff && mii_status != 0x0000) {
1048 u16 advertising = mdio_read(dev, phy, 4);
1049 tp->phys[phy_idx++] = phy;
1050 printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x "
1051 "advertising %4.4x.\n",
1052 dev->name, phy, mii_status, advertising);
1056 printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
1064 tp->mii.phy_id = tp->phys[0];
1066 /* The lower four bits are the media type. */
1067 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1069 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1070 tp->default_port = option & 0xFF;
1071 if (tp->default_port)
1072 tp->mii.force_media = 1;
1074 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1075 tp->mii.full_duplex = full_duplex[board_idx];
1076 if (tp->mii.full_duplex) {
1077 printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
1078 /* Changing the MII-advertised media because might prevent
1080 tp->mii.force_media = 1;
1082 if (tp->default_port) {
1083 printk(KERN_INFO " Forcing %dMbps %s-duplex operation.\n",
1084 (option & 0x20 ? 100 : 10),
1085 (option & 0x10 ? "full" : "half"));
1086 mdio_write(dev, tp->phys[0], 0,
1087 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1088 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1091 /* Put the chip into low-power mode. */
1092 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1093 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1098 __rtl8139_cleanup_dev (dev);
1099 pci_disable_device (pdev);
1104 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1106 struct net_device *dev = pci_get_drvdata (pdev);
1108 assert (dev != NULL);
1110 unregister_netdev (dev);
1112 __rtl8139_cleanup_dev (dev);
1113 pci_disable_device (pdev);
1117 /* Serial EEPROM section. */
1119 /* EEPROM_Ctrl bits. */
1120 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1121 #define EE_CS 0x08 /* EEPROM chip select. */
1122 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1123 #define EE_WRITE_0 0x00
1124 #define EE_WRITE_1 0x02
1125 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1126 #define EE_ENB (0x80 | EE_CS)
1128 /* Delay between EEPROM clock transitions.
1129 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1132 #define eeprom_delay() RTL_R32(Cfg9346)
1134 /* The EEPROM commands include the alway-set leading bit. */
1135 #define EE_WRITE_CMD (5)
1136 #define EE_READ_CMD (6)
1137 #define EE_ERASE_CMD (7)
1139 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1142 unsigned retval = 0;
1143 int read_cmd = location | (EE_READ_CMD << addr_len);
1145 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1146 RTL_W8 (Cfg9346, EE_ENB);
1149 /* Shift the read command bits out. */
1150 for (i = 4 + addr_len; i >= 0; i--) {
1151 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1152 RTL_W8 (Cfg9346, EE_ENB | dataval);
1154 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1157 RTL_W8 (Cfg9346, EE_ENB);
1160 for (i = 16; i > 0; i--) {
1161 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1164 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1166 RTL_W8 (Cfg9346, EE_ENB);
1170 /* Terminate the EEPROM access. */
1171 RTL_W8 (Cfg9346, ~EE_CS);
1177 /* MII serial management: mostly bogus for now. */
1178 /* Read and write the MII management registers using software-generated
1179 serial MDIO protocol.
1180 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1181 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1182 "overclocking" issues. */
1183 #define MDIO_DIR 0x80
1184 #define MDIO_DATA_OUT 0x04
1185 #define MDIO_DATA_IN 0x02
1186 #define MDIO_CLK 0x01
1187 #define MDIO_WRITE0 (MDIO_DIR)
1188 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1190 #define mdio_delay() RTL_R8(Config4)
1193 static char mii_2_8139_map[8] = {
1205 #ifdef CONFIG_8139TOO_8129
1206 /* Syncronize the MII management interface by shifting 32 one bits out. */
1207 static void mdio_sync (void __iomem *ioaddr)
1211 for (i = 32; i >= 0; i--) {
1212 RTL_W8 (Config4, MDIO_WRITE1);
1214 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1220 static int mdio_read (struct net_device *dev, int phy_id, int location)
1222 struct rtl8139_private *tp = netdev_priv(dev);
1224 #ifdef CONFIG_8139TOO_8129
1225 void __iomem *ioaddr = tp->mmio_addr;
1226 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1230 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1231 void __iomem *ioaddr = tp->mmio_addr;
1232 return location < 8 && mii_2_8139_map[location] ?
1233 RTL_R16 (mii_2_8139_map[location]) : 0;
1236 #ifdef CONFIG_8139TOO_8129
1238 /* Shift the read command bits out. */
1239 for (i = 15; i >= 0; i--) {
1240 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1242 RTL_W8 (Config4, MDIO_DIR | dataval);
1244 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1248 /* Read the two transition, 16 data, and wire-idle bits. */
1249 for (i = 19; i > 0; i--) {
1250 RTL_W8 (Config4, 0);
1252 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1253 RTL_W8 (Config4, MDIO_CLK);
1258 return (retval >> 1) & 0xffff;
1262 static void mdio_write (struct net_device *dev, int phy_id, int location,
1265 struct rtl8139_private *tp = netdev_priv(dev);
1266 #ifdef CONFIG_8139TOO_8129
1267 void __iomem *ioaddr = tp->mmio_addr;
1268 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1272 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1273 void __iomem *ioaddr = tp->mmio_addr;
1274 if (location == 0) {
1275 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1276 RTL_W16 (BasicModeCtrl, value);
1277 RTL_W8 (Cfg9346, Cfg9346_Lock);
1278 } else if (location < 8 && mii_2_8139_map[location])
1279 RTL_W16 (mii_2_8139_map[location], value);
1283 #ifdef CONFIG_8139TOO_8129
1286 /* Shift the command bits out. */
1287 for (i = 31; i >= 0; i--) {
1289 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1290 RTL_W8 (Config4, dataval);
1292 RTL_W8 (Config4, dataval | MDIO_CLK);
1295 /* Clear out extra bits. */
1296 for (i = 2; i > 0; i--) {
1297 RTL_W8 (Config4, 0);
1299 RTL_W8 (Config4, MDIO_CLK);
1306 static int rtl8139_open (struct net_device *dev)
1308 struct rtl8139_private *tp = netdev_priv(dev);
1310 void __iomem *ioaddr = tp->mmio_addr;
1312 retval = request_irq (dev->irq, rtl8139_interrupt, SA_SHIRQ, dev->name, dev);
1316 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1318 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1320 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1321 free_irq(dev->irq, dev);
1324 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1325 tp->tx_bufs, tp->tx_bufs_dma);
1327 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1328 tp->rx_ring, tp->rx_ring_dma);
1334 tp->mii.full_duplex = tp->mii.force_media;
1335 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1337 rtl8139_init_ring (dev);
1338 rtl8139_hw_start (dev);
1339 netif_start_queue (dev);
1341 if (netif_msg_ifup(tp))
1342 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#lx IRQ %d"
1343 " GP Pins %2.2x %s-duplex.\n",
1344 dev->name, pci_resource_start (tp->pci_dev, 1),
1345 dev->irq, RTL_R8 (MediaStatus),
1346 tp->mii.full_duplex ? "full" : "half");
1348 rtl8139_start_thread(dev);
1354 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1356 struct rtl8139_private *tp = netdev_priv(dev);
1358 if (tp->phys[0] >= 0) {
1359 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1363 /* Start the hardware at open or resume. */
1364 static void rtl8139_hw_start (struct net_device *dev)
1366 struct rtl8139_private *tp = netdev_priv(dev);
1367 void __iomem *ioaddr = tp->mmio_addr;
1371 /* Bring old chips out of low-power mode. */
1372 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1373 RTL_W8 (HltClk, 'R');
1375 rtl8139_chip_reset (ioaddr);
1377 /* unlock Config[01234] and BMCR register writes */
1378 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1379 /* Restore our idea of the MAC address. */
1380 RTL_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1381 RTL_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1383 /* Must enable Tx/Rx before setting transfer thresholds! */
1384 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1386 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1387 RTL_W32 (RxConfig, tp->rx_config);
1388 RTL_W32 (TxConfig, rtl8139_tx_config);
1392 rtl_check_media (dev, 1);
1394 if (tp->chipset >= CH_8139B) {
1395 /* Disable magic packet scanning, which is enabled
1396 * when PM is enabled in Config1. It can be reenabled
1397 * via ETHTOOL_SWOL if desired. */
1398 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1401 DPRINTK("init buffer addresses\n");
1403 /* Lock Config[01234] and BMCR register writes */
1404 RTL_W8 (Cfg9346, Cfg9346_Lock);
1406 /* init Rx ring buffer DMA address */
1407 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1409 /* init Tx buffer DMA addresses */
1410 for (i = 0; i < NUM_TX_DESC; i++)
1411 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1413 RTL_W32 (RxMissed, 0);
1415 rtl8139_set_rx_mode (dev);
1417 /* no early-rx interrupts */
1418 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1420 /* make sure RxTx has started */
1421 tmp = RTL_R8 (ChipCmd);
1422 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1423 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1425 /* Enable all known interrupts by setting the interrupt mask. */
1426 RTL_W16 (IntrMask, rtl8139_intr_mask);
1430 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1431 static void rtl8139_init_ring (struct net_device *dev)
1433 struct rtl8139_private *tp = netdev_priv(dev);
1440 for (i = 0; i < NUM_TX_DESC; i++)
1441 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1445 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1446 static int next_tick = 3 * HZ;
1448 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1449 static inline void rtl8139_tune_twister (struct net_device *dev,
1450 struct rtl8139_private *tp) {}
1452 enum TwisterParamVals {
1453 PARA78_default = 0x78fa8388,
1454 PARA7c_default = 0xcb38de43, /* param[0][3] */
1455 PARA7c_xxx = 0xcb38de43,
1458 static const unsigned long param[4][4] = {
1459 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1460 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1461 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1462 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1465 static void rtl8139_tune_twister (struct net_device *dev,
1466 struct rtl8139_private *tp)
1469 void __iomem *ioaddr = tp->mmio_addr;
1471 /* This is a complicated state machine to configure the "twister" for
1472 impedance/echos based on the cable length.
1473 All of this is magic and undocumented.
1475 switch (tp->twistie) {
1477 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1478 /* We have link beat, let us tune the twister. */
1479 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1480 tp->twistie = 2; /* Change to state 2. */
1481 next_tick = HZ / 10;
1483 /* Just put in some reasonable defaults for when beat returns. */
1484 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1485 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1486 RTL_W32 (PARA78, PARA78_default);
1487 RTL_W32 (PARA7c, PARA7c_default);
1488 tp->twistie = 0; /* Bail from future actions. */
1492 /* Read how long it took to hear the echo. */
1493 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1494 if (linkcase == 0x7000)
1496 else if (linkcase == 0x3000)
1498 else if (linkcase == 0x1000)
1503 tp->twistie = 3; /* Change to state 2. */
1504 next_tick = HZ / 10;
1507 /* Put out four tuning parameters, one per 100msec. */
1508 if (tp->twist_col == 0)
1509 RTL_W16 (FIFOTMS, 0);
1510 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1511 [(int) tp->twist_col]);
1512 next_tick = HZ / 10;
1513 if (++tp->twist_col >= 4) {
1514 /* For short cables we are done.
1515 For long cables (row == 3) check for mistune. */
1517 (tp->twist_row == 3) ? 4 : 0;
1521 /* Special case for long cables: check for mistune. */
1522 if ((RTL_R16 (CSCR) &
1523 CSCR_LinkStatusBits) == 0x7000) {
1527 RTL_W32 (PARA7c, 0xfb38de03);
1529 next_tick = HZ / 10;
1533 /* Retune for shorter cable (column 2). */
1534 RTL_W32 (FIFOTMS, 0x20);
1535 RTL_W32 (PARA78, PARA78_default);
1536 RTL_W32 (PARA7c, PARA7c_default);
1537 RTL_W32 (FIFOTMS, 0x00);
1541 next_tick = HZ / 10;
1549 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1551 static inline void rtl8139_thread_iter (struct net_device *dev,
1552 struct rtl8139_private *tp,
1553 void __iomem *ioaddr)
1557 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1559 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1560 int duplex = (mii_lpa & LPA_100FULL)
1561 || (mii_lpa & 0x01C0) == 0x0040;
1562 if (tp->mii.full_duplex != duplex) {
1563 tp->mii.full_duplex = duplex;
1567 "%s: Setting %s-duplex based on MII #%d link"
1568 " partner ability of %4.4x.\n",
1570 tp->mii.full_duplex ? "full" : "half",
1571 tp->phys[0], mii_lpa);
1573 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1577 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1578 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1579 RTL_W8 (Cfg9346, Cfg9346_Lock);
1584 next_tick = HZ * 60;
1586 rtl8139_tune_twister (dev, tp);
1588 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1589 dev->name, RTL_R16 (NWayLPAR));
1590 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1591 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1592 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1593 dev->name, RTL_R8 (Config0),
1597 static int rtl8139_thread (void *data)
1599 struct net_device *dev = data;
1600 struct rtl8139_private *tp = netdev_priv(dev);
1601 unsigned long timeout;
1603 daemonize("%s", dev->name);
1604 allow_signal(SIGTERM);
1607 timeout = next_tick;
1609 timeout = interruptible_sleep_on_timeout (&tp->thr_wait, timeout);
1610 /* make swsusp happy with our thread */
1612 } while (!signal_pending (current) && (timeout > 0));
1614 if (signal_pending (current)) {
1615 flush_signals(current);
1618 if (tp->time_to_die)
1621 if (rtnl_lock_interruptible ())
1623 rtl8139_thread_iter (dev, tp, tp->mmio_addr);
1627 complete_and_exit (&tp->thr_exited, 0);
1630 static void rtl8139_start_thread(struct net_device *dev)
1632 struct rtl8139_private *tp = netdev_priv(dev);
1636 tp->time_to_die = 0;
1637 if (tp->chipset == CH_8139_K)
1639 else if (tp->drv_flags & HAS_LNK_CHNG)
1642 tp->thr_pid = kernel_thread(rtl8139_thread, dev, CLONE_FS|CLONE_FILES);
1643 if (tp->thr_pid < 0) {
1644 printk (KERN_WARNING "%s: unable to start kernel thread\n",
1649 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1654 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1658 static void rtl8139_tx_timeout (struct net_device *dev)
1660 struct rtl8139_private *tp = netdev_priv(dev);
1661 void __iomem *ioaddr = tp->mmio_addr;
1664 unsigned long flags;
1666 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1667 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1668 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1669 /* Emit info to figure out what went wrong. */
1670 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1671 dev->name, tp->cur_tx, tp->dirty_tx);
1672 for (i = 0; i < NUM_TX_DESC; i++)
1673 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1674 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1675 i == tp->dirty_tx % NUM_TX_DESC ?
1676 " (queue head)" : "");
1678 tp->xstats.tx_timeouts++;
1680 /* disable Tx ASAP, if not already */
1681 tmp8 = RTL_R8 (ChipCmd);
1682 if (tmp8 & CmdTxEnb)
1683 RTL_W8 (ChipCmd, CmdRxEnb);
1685 spin_lock(&tp->rx_lock);
1686 /* Disable interrupts by clearing the interrupt mask. */
1687 RTL_W16 (IntrMask, 0x0000);
1689 /* Stop a shared interrupt from scavenging while we are. */
1690 spin_lock_irqsave (&tp->lock, flags);
1691 rtl8139_tx_clear (tp);
1692 spin_unlock_irqrestore (&tp->lock, flags);
1694 /* ...and finally, reset everything */
1695 if (netif_running(dev)) {
1696 rtl8139_hw_start (dev);
1697 netif_wake_queue (dev);
1699 spin_unlock(&tp->rx_lock);
1703 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1705 struct rtl8139_private *tp = netdev_priv(dev);
1706 void __iomem *ioaddr = tp->mmio_addr;
1708 unsigned int len = skb->len;
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 tp->stats.tx_dropped++;
1725 spin_lock_irq(&tp->lock);
1726 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1727 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1729 dev->trans_start = jiffies;
1734 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1735 netif_stop_queue (dev);
1736 spin_unlock_irq(&tp->lock);
1738 if (netif_msg_tx_queued(tp))
1739 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1740 dev->name, len, entry);
1746 static void rtl8139_tx_interrupt (struct net_device *dev,
1747 struct rtl8139_private *tp,
1748 void __iomem *ioaddr)
1750 unsigned long dirty_tx, tx_left;
1752 assert (dev != NULL);
1753 assert (ioaddr != NULL);
1755 dirty_tx = tp->dirty_tx;
1756 tx_left = tp->cur_tx - dirty_tx;
1757 while (tx_left > 0) {
1758 int entry = dirty_tx % NUM_TX_DESC;
1761 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1763 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1764 break; /* It still hasn't been Txed */
1766 /* Note: TxCarrierLost is always asserted at 100mbps. */
1767 if (txstatus & (TxOutOfWindow | TxAborted)) {
1768 /* There was an major error, log it. */
1769 if (netif_msg_tx_err(tp))
1770 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1771 dev->name, txstatus);
1772 tp->stats.tx_errors++;
1773 if (txstatus & TxAborted) {
1774 tp->stats.tx_aborted_errors++;
1775 RTL_W32 (TxConfig, TxClearAbt);
1776 RTL_W16 (IntrStatus, TxErr);
1779 if (txstatus & TxCarrierLost)
1780 tp->stats.tx_carrier_errors++;
1781 if (txstatus & TxOutOfWindow)
1782 tp->stats.tx_window_errors++;
1784 if (txstatus & TxUnderrun) {
1785 /* Add 64 to the Tx FIFO threshold. */
1786 if (tp->tx_flag < 0x00300000)
1787 tp->tx_flag += 0x00020000;
1788 tp->stats.tx_fifo_errors++;
1790 tp->stats.collisions += (txstatus >> 24) & 15;
1791 tp->stats.tx_bytes += txstatus & 0x7ff;
1792 tp->stats.tx_packets++;
1799 #ifndef RTL8139_NDEBUG
1800 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1801 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1802 dev->name, dirty_tx, tp->cur_tx);
1803 dirty_tx += NUM_TX_DESC;
1805 #endif /* RTL8139_NDEBUG */
1807 /* only wake the queue if we did work, and the queue is stopped */
1808 if (tp->dirty_tx != dirty_tx) {
1809 tp->dirty_tx = dirty_tx;
1811 netif_wake_queue (dev);
1816 /* TODO: clean this up! Rx reset need not be this intensive */
1817 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1818 struct rtl8139_private *tp, void __iomem *ioaddr)
1821 #ifdef CONFIG_8139_OLD_RX_RESET
1825 if (netif_msg_rx_err (tp))
1826 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1827 dev->name, rx_status);
1828 tp->stats.rx_errors++;
1829 if (!(rx_status & RxStatusOK)) {
1830 if (rx_status & RxTooLong) {
1831 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1832 dev->name, rx_status);
1833 /* A.C.: The chip hangs here. */
1835 if (rx_status & (RxBadSymbol | RxBadAlign))
1836 tp->stats.rx_frame_errors++;
1837 if (rx_status & (RxRunt | RxTooLong))
1838 tp->stats.rx_length_errors++;
1839 if (rx_status & RxCRCErr)
1840 tp->stats.rx_crc_errors++;
1842 tp->xstats.rx_lost_in_ring++;
1845 #ifndef CONFIG_8139_OLD_RX_RESET
1846 tmp8 = RTL_R8 (ChipCmd);
1847 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1848 RTL_W8 (ChipCmd, tmp8);
1849 RTL_W32 (RxConfig, tp->rx_config);
1852 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1854 /* disable receive */
1855 RTL_W8_F (ChipCmd, CmdTxEnb);
1857 while (--tmp_work > 0) {
1859 tmp8 = RTL_R8 (ChipCmd);
1860 if (!(tmp8 & CmdRxEnb))
1864 printk (KERN_WARNING PFX "rx stop wait too long\n");
1865 /* restart receive */
1867 while (--tmp_work > 0) {
1868 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1870 tmp8 = RTL_R8 (ChipCmd);
1871 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1875 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1877 /* and reinitialize all rx related registers */
1878 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1879 /* Must enable Tx/Rx before setting transfer thresholds! */
1880 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1882 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1883 RTL_W32 (RxConfig, tp->rx_config);
1886 DPRINTK("init buffer addresses\n");
1888 /* Lock Config[01234] and BMCR register writes */
1889 RTL_W8 (Cfg9346, Cfg9346_Lock);
1891 /* init Rx ring buffer DMA address */
1892 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1894 /* A.C.: Reset the multicast list. */
1895 __set_rx_mode (dev);
1900 static __inline__ void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1901 u32 offset, unsigned int size)
1903 u32 left = RX_BUF_LEN - offset;
1906 memcpy(skb->data, ring + offset, left);
1907 memcpy(skb->data+left, ring, size - left);
1909 memcpy(skb->data, ring + offset, size);
1913 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1915 void __iomem *ioaddr = tp->mmio_addr;
1918 status = RTL_R16 (IntrStatus) & RxAckBits;
1920 /* Clear out errors and receive interrupts */
1921 if (likely(status != 0)) {
1922 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1923 tp->stats.rx_errors++;
1924 if (status & RxFIFOOver)
1925 tp->stats.rx_fifo_errors++;
1927 RTL_W16_F (IntrStatus, RxAckBits);
1931 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1934 void __iomem *ioaddr = tp->mmio_addr;
1936 unsigned char *rx_ring = tp->rx_ring;
1937 unsigned int cur_rx = tp->cur_rx;
1938 unsigned int rx_size = 0;
1940 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1941 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1942 RTL_R16 (RxBufAddr),
1943 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1945 while (netif_running(dev) && received < budget
1946 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1947 u32 ring_offset = cur_rx % RX_BUF_LEN;
1949 unsigned int pkt_size;
1950 struct sk_buff *skb;
1954 /* read size+status of next frame from DMA ring buffer */
1955 rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset));
1956 rx_size = rx_status >> 16;
1957 pkt_size = rx_size - 4;
1959 if (netif_msg_rx_status(tp))
1960 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1961 " cur %4.4x.\n", dev->name, rx_status,
1963 #if RTL8139_DEBUG > 2
1966 DPRINTK ("%s: Frame contents ", dev->name);
1967 for (i = 0; i < 70; i++)
1969 rx_ring[ring_offset + i]);
1974 /* Packet copy from FIFO still in progress.
1975 * Theoretically, this should never happen
1976 * since EarlyRx is disabled.
1978 if (unlikely(rx_size == 0xfff0)) {
1979 if (!tp->fifo_copy_timeout)
1980 tp->fifo_copy_timeout = jiffies + 2;
1981 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1982 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1986 if (netif_msg_intr(tp)) {
1987 printk(KERN_DEBUG "%s: fifo copy in progress.",
1990 tp->xstats.early_rx++;
1995 tp->fifo_copy_timeout = 0;
1997 /* If Rx err or invalid rx_size/rx_status received
1998 * (which happens if we get lost in the ring),
1999 * Rx process gets reset, so we abort any further
2002 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
2004 (!(rx_status & RxStatusOK)))) {
2005 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
2010 /* Malloc up new buffer, compatible with net-2e. */
2011 /* Omit the four octet CRC from the length. */
2013 skb = dev_alloc_skb (pkt_size + 2);
2016 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
2018 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2020 eth_copy_and_sum (skb, &rx_ring[ring_offset + 4], pkt_size, 0);
2022 skb_put (skb, pkt_size);
2024 skb->protocol = eth_type_trans (skb, dev);
2026 dev->last_rx = jiffies;
2027 tp->stats.rx_bytes += pkt_size;
2028 tp->stats.rx_packets++;
2030 netif_receive_skb (skb);
2032 if (net_ratelimit())
2033 printk (KERN_WARNING
2034 "%s: Memory squeeze, dropping packet.\n",
2036 tp->stats.rx_dropped++;
2040 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2041 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2043 rtl8139_isr_ack(tp);
2046 if (unlikely(!received || rx_size == 0xfff0))
2047 rtl8139_isr_ack(tp);
2049 #if RTL8139_DEBUG > 1
2050 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2051 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2052 RTL_R16 (RxBufAddr),
2053 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2056 tp->cur_rx = cur_rx;
2059 * The receive buffer should be mostly empty.
2060 * Tell NAPI to reenable the Rx irq.
2062 if (tp->fifo_copy_timeout)
2070 static void rtl8139_weird_interrupt (struct net_device *dev,
2071 struct rtl8139_private *tp,
2072 void __iomem *ioaddr,
2073 int status, int link_changed)
2075 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2078 assert (dev != NULL);
2079 assert (tp != NULL);
2080 assert (ioaddr != NULL);
2082 /* Update the error count. */
2083 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2084 RTL_W32 (RxMissed, 0);
2086 if ((status & RxUnderrun) && link_changed &&
2087 (tp->drv_flags & HAS_LNK_CHNG)) {
2088 rtl_check_media(dev, 0);
2089 status &= ~RxUnderrun;
2092 if (status & (RxUnderrun | RxErr))
2093 tp->stats.rx_errors++;
2095 if (status & PCSTimeout)
2096 tp->stats.rx_length_errors++;
2097 if (status & RxUnderrun)
2098 tp->stats.rx_fifo_errors++;
2099 if (status & PCIErr) {
2101 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2102 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2104 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2105 dev->name, pci_cmd_status);
2109 static int rtl8139_poll(struct net_device *dev, int *budget)
2111 struct rtl8139_private *tp = netdev_priv(dev);
2112 void __iomem *ioaddr = tp->mmio_addr;
2113 int orig_budget = min(*budget, dev->quota);
2116 spin_lock(&tp->rx_lock);
2117 if (likely(RTL_R16(IntrStatus) & RxAckBits)) {
2120 work_done = rtl8139_rx(dev, tp, orig_budget);
2121 if (likely(work_done > 0)) {
2122 *budget -= work_done;
2123 dev->quota -= work_done;
2124 done = (work_done < orig_budget);
2130 * Order is important since data can get interrupted
2131 * again when we think we are done.
2133 local_irq_disable();
2134 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2135 __netif_rx_complete(dev);
2138 spin_unlock(&tp->rx_lock);
2143 /* The interrupt handler does all of the Rx thread work and cleans up
2144 after the Tx thread. */
2145 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance,
2146 struct pt_regs *regs)
2148 struct net_device *dev = (struct net_device *) dev_instance;
2149 struct rtl8139_private *tp = netdev_priv(dev);
2150 void __iomem *ioaddr = tp->mmio_addr;
2151 u16 status, ackstat;
2152 int link_changed = 0; /* avoid bogus "uninit" warning */
2155 spin_lock (&tp->lock);
2156 status = RTL_R16 (IntrStatus);
2159 if (unlikely((status & rtl8139_intr_mask) == 0))
2164 /* h/w no longer present (hotplug?) or major error, bail */
2165 if (unlikely(status == 0xFFFF))
2168 /* close possible race's with dev_close */
2169 if (unlikely(!netif_running(dev))) {
2170 RTL_W16 (IntrMask, 0);
2174 /* Acknowledge all of the current interrupt sources ASAP, but
2175 an first get an additional status bit from CSCR. */
2176 if (unlikely(status & RxUnderrun))
2177 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2179 ackstat = status & ~(RxAckBits | TxErr);
2181 RTL_W16 (IntrStatus, ackstat);
2183 /* Receive packets are processed by poll routine.
2184 If not running start it now. */
2185 if (status & RxAckBits){
2186 if (netif_rx_schedule_prep(dev)) {
2187 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2188 __netif_rx_schedule (dev);
2192 /* Check uncommon events with one test. */
2193 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2194 rtl8139_weird_interrupt (dev, tp, ioaddr,
2195 status, link_changed);
2197 if (status & (TxOK | TxErr)) {
2198 rtl8139_tx_interrupt (dev, tp, ioaddr);
2200 RTL_W16 (IntrStatus, TxErr);
2203 spin_unlock (&tp->lock);
2205 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2206 dev->name, RTL_R16 (IntrStatus));
2207 return IRQ_RETVAL(handled);
2210 #ifdef CONFIG_NET_POLL_CONTROLLER
2212 * Polling receive - used by netconsole and other diagnostic tools
2213 * to allow network i/o with interrupts disabled.
2215 static void rtl8139_poll_controller(struct net_device *dev)
2217 disable_irq(dev->irq);
2218 rtl8139_interrupt(dev->irq, dev, NULL);
2219 enable_irq(dev->irq);
2223 static int rtl8139_close (struct net_device *dev)
2225 struct rtl8139_private *tp = netdev_priv(dev);
2226 void __iomem *ioaddr = tp->mmio_addr;
2228 unsigned long flags;
2230 netif_stop_queue (dev);
2232 if (tp->thr_pid >= 0) {
2233 tp->time_to_die = 1;
2235 ret = kill_proc (tp->thr_pid, SIGTERM, 1);
2237 printk (KERN_ERR "%s: unable to signal thread\n", dev->name);
2240 wait_for_completion (&tp->thr_exited);
2243 if (netif_msg_ifdown(tp))
2244 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2245 dev->name, RTL_R16 (IntrStatus));
2247 spin_lock_irqsave (&tp->lock, flags);
2249 /* Stop the chip's Tx and Rx DMA processes. */
2250 RTL_W8 (ChipCmd, 0);
2252 /* Disable interrupts by clearing the interrupt mask. */
2253 RTL_W16 (IntrMask, 0);
2255 /* Update the error counts. */
2256 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2257 RTL_W32 (RxMissed, 0);
2259 spin_unlock_irqrestore (&tp->lock, flags);
2261 synchronize_irq (dev->irq); /* racy, but that's ok here */
2262 free_irq (dev->irq, dev);
2264 rtl8139_tx_clear (tp);
2266 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
2267 tp->rx_ring, tp->rx_ring_dma);
2268 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
2269 tp->tx_bufs, tp->tx_bufs_dma);
2273 /* Green! Put the chip in low-power mode. */
2274 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2276 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2277 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2283 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2284 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2285 other threads or interrupts aren't messing with the 8139. */
2286 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2288 struct rtl8139_private *np = netdev_priv(dev);
2289 void __iomem *ioaddr = np->mmio_addr;
2291 spin_lock_irq(&np->lock);
2292 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2293 u8 cfg3 = RTL_R8 (Config3);
2294 u8 cfg5 = RTL_R8 (Config5);
2296 wol->supported = WAKE_PHY | WAKE_MAGIC
2297 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2300 if (cfg3 & Cfg3_LinkUp)
2301 wol->wolopts |= WAKE_PHY;
2302 if (cfg3 & Cfg3_Magic)
2303 wol->wolopts |= WAKE_MAGIC;
2304 /* (KON)FIXME: See how netdev_set_wol() handles the
2305 following constants. */
2306 if (cfg5 & Cfg5_UWF)
2307 wol->wolopts |= WAKE_UCAST;
2308 if (cfg5 & Cfg5_MWF)
2309 wol->wolopts |= WAKE_MCAST;
2310 if (cfg5 & Cfg5_BWF)
2311 wol->wolopts |= WAKE_BCAST;
2313 spin_unlock_irq(&np->lock);
2317 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2318 that wol points to kernel memory and other threads or interrupts
2319 aren't messing with the 8139. */
2320 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2322 struct rtl8139_private *np = netdev_priv(dev);
2323 void __iomem *ioaddr = np->mmio_addr;
2327 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2328 ? (WAKE_PHY | WAKE_MAGIC
2329 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2331 if (wol->wolopts & ~support)
2334 spin_lock_irq(&np->lock);
2335 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2336 if (wol->wolopts & WAKE_PHY)
2337 cfg3 |= Cfg3_LinkUp;
2338 if (wol->wolopts & WAKE_MAGIC)
2340 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2341 RTL_W8 (Config3, cfg3);
2342 RTL_W8 (Cfg9346, Cfg9346_Lock);
2344 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2345 /* (KON)FIXME: These are untested. We may have to set the
2346 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2348 if (wol->wolopts & WAKE_UCAST)
2350 if (wol->wolopts & WAKE_MCAST)
2352 if (wol->wolopts & WAKE_BCAST)
2354 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2355 spin_unlock_irq(&np->lock);
2360 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2362 struct rtl8139_private *np = netdev_priv(dev);
2363 strcpy(info->driver, DRV_NAME);
2364 strcpy(info->version, DRV_VERSION);
2365 strcpy(info->bus_info, pci_name(np->pci_dev));
2366 info->regdump_len = np->regs_len;
2369 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2371 struct rtl8139_private *np = netdev_priv(dev);
2372 spin_lock_irq(&np->lock);
2373 mii_ethtool_gset(&np->mii, cmd);
2374 spin_unlock_irq(&np->lock);
2378 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2380 struct rtl8139_private *np = netdev_priv(dev);
2382 spin_lock_irq(&np->lock);
2383 rc = mii_ethtool_sset(&np->mii, cmd);
2384 spin_unlock_irq(&np->lock);
2388 static int rtl8139_nway_reset(struct net_device *dev)
2390 struct rtl8139_private *np = netdev_priv(dev);
2391 return mii_nway_restart(&np->mii);
2394 static u32 rtl8139_get_link(struct net_device *dev)
2396 struct rtl8139_private *np = netdev_priv(dev);
2397 return mii_link_ok(&np->mii);
2400 static u32 rtl8139_get_msglevel(struct net_device *dev)
2402 struct rtl8139_private *np = netdev_priv(dev);
2403 return np->msg_enable;
2406 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2408 struct rtl8139_private *np = netdev_priv(dev);
2409 np->msg_enable = datum;
2412 /* TODO: we are too slack to do reg dumping for pio, for now */
2413 #ifdef CONFIG_8139TOO_PIO
2414 #define rtl8139_get_regs_len NULL
2415 #define rtl8139_get_regs NULL
2417 static int rtl8139_get_regs_len(struct net_device *dev)
2419 struct rtl8139_private *np = netdev_priv(dev);
2420 return np->regs_len;
2423 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2425 struct rtl8139_private *np = netdev_priv(dev);
2427 regs->version = RTL_REGS_VER;
2429 spin_lock_irq(&np->lock);
2430 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2431 spin_unlock_irq(&np->lock);
2433 #endif /* CONFIG_8139TOO_MMIO */
2435 static int rtl8139_get_stats_count(struct net_device *dev)
2437 return RTL_NUM_STATS;
2440 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2442 struct rtl8139_private *np = netdev_priv(dev);
2444 data[0] = np->xstats.early_rx;
2445 data[1] = np->xstats.tx_buf_mapped;
2446 data[2] = np->xstats.tx_timeouts;
2447 data[3] = np->xstats.rx_lost_in_ring;
2450 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2452 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2455 static struct ethtool_ops rtl8139_ethtool_ops = {
2456 .get_drvinfo = rtl8139_get_drvinfo,
2457 .get_settings = rtl8139_get_settings,
2458 .set_settings = rtl8139_set_settings,
2459 .get_regs_len = rtl8139_get_regs_len,
2460 .get_regs = rtl8139_get_regs,
2461 .nway_reset = rtl8139_nway_reset,
2462 .get_link = rtl8139_get_link,
2463 .get_msglevel = rtl8139_get_msglevel,
2464 .set_msglevel = rtl8139_set_msglevel,
2465 .get_wol = rtl8139_get_wol,
2466 .set_wol = rtl8139_set_wol,
2467 .get_strings = rtl8139_get_strings,
2468 .get_stats_count = rtl8139_get_stats_count,
2469 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2470 .get_perm_addr = ethtool_op_get_perm_addr,
2473 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2475 struct rtl8139_private *np = netdev_priv(dev);
2478 if (!netif_running(dev))
2481 spin_lock_irq(&np->lock);
2482 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2483 spin_unlock_irq(&np->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 tp->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 DPRINTK ("%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) {
2521 /* Unconditionally log net taps. */
2522 printk (KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2525 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2527 mc_filter[1] = mc_filter[0] = 0xffffffff;
2528 } else if ((dev->mc_count > multicast_filter_limit)
2529 || (dev->flags & IFF_ALLMULTI)) {
2530 /* Too many to filter perfectly -- accept all multicasts. */
2531 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2532 mc_filter[1] = mc_filter[0] = 0xffffffff;
2534 struct dev_mc_list *mclist;
2535 rx_mode = AcceptBroadcast | AcceptMyPhys;
2536 mc_filter[1] = mc_filter[0] = 0;
2537 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2538 i++, mclist = mclist->next) {
2539 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2541 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2542 rx_mode |= AcceptMulticast;
2546 /* We can safely update without stopping the chip. */
2547 tmp = rtl8139_rx_config | rx_mode;
2548 if (tp->rx_config != tmp) {
2549 RTL_W32_F (RxConfig, tmp);
2550 tp->rx_config = tmp;
2552 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2553 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2556 static void rtl8139_set_rx_mode (struct net_device *dev)
2558 unsigned long flags;
2559 struct rtl8139_private *tp = netdev_priv(dev);
2561 spin_lock_irqsave (&tp->lock, flags);
2563 spin_unlock_irqrestore (&tp->lock, flags);
2568 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2570 struct net_device *dev = pci_get_drvdata (pdev);
2571 struct rtl8139_private *tp = netdev_priv(dev);
2572 void __iomem *ioaddr = tp->mmio_addr;
2573 unsigned long flags;
2575 pci_save_state (pdev);
2577 if (!netif_running (dev))
2580 netif_device_detach (dev);
2582 spin_lock_irqsave (&tp->lock, flags);
2584 /* Disable interrupts, stop Tx and Rx. */
2585 RTL_W16 (IntrMask, 0);
2586 RTL_W8 (ChipCmd, 0);
2588 /* Update the error counts. */
2589 tp->stats.rx_missed_errors += RTL_R32 (RxMissed);
2590 RTL_W32 (RxMissed, 0);
2592 spin_unlock_irqrestore (&tp->lock, flags);
2594 pci_set_power_state (pdev, PCI_D3hot);
2600 static int rtl8139_resume (struct pci_dev *pdev)
2602 struct net_device *dev = pci_get_drvdata (pdev);
2604 pci_restore_state (pdev);
2605 if (!netif_running (dev))
2607 pci_set_power_state (pdev, PCI_D0);
2608 rtl8139_init_ring (dev);
2609 rtl8139_hw_start (dev);
2610 netif_device_attach (dev);
2614 #endif /* CONFIG_PM */
2617 static struct pci_driver rtl8139_pci_driver = {
2619 .id_table = rtl8139_pci_tbl,
2620 .probe = rtl8139_init_one,
2621 .remove = __devexit_p(rtl8139_remove_one),
2623 .suspend = rtl8139_suspend,
2624 .resume = rtl8139_resume,
2625 #endif /* CONFIG_PM */
2629 static int __init rtl8139_init_module (void)
2631 /* when we're a module, we always print a version message,
2632 * even if no 8139 board is found.
2635 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2638 return pci_module_init (&rtl8139_pci_driver);
2642 static void __exit rtl8139_cleanup_module (void)
2644 pci_unregister_driver (&rtl8139_pci_driver);
2648 module_init(rtl8139_init_module);
2649 module_exit(rtl8139_cleanup_module);