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 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 {
392 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
394 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
395 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
396 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
397 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
399 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
400 TxCRC = (1 << 16), /* DISABLE Tx pkt CRC append */
401 TxClearAbt = (1 << 0), /* Clear abort (WO) */
402 TxDMAShift = 8, /* DMA burst value (0-7) is shifted X many bits */
403 TxRetryShift = 4, /* TXRR value (0-15) is shifted X many bits */
405 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
408 /* Bits in Config1 */
410 Cfg1_PM_Enable = 0x01,
411 Cfg1_VPD_Enable = 0x02,
414 LWAKE = 0x10, /* not on 8139, 8139A */
415 Cfg1_Driver_Load = 0x20,
418 SLEEP = (1 << 1), /* only on 8139, 8139A */
419 PWRDN = (1 << 0), /* only on 8139, 8139A */
422 /* Bits in Config3 */
424 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
425 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
426 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
427 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
428 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
429 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
430 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
431 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
434 /* Bits in Config4 */
436 LWPTN = (1 << 2), /* not on 8139, 8139A */
439 /* Bits in Config5 */
441 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
442 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
443 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
444 Cfg5_FIFOAddrPtr= (1 << 3), /* Realtek internal SRAM testing */
445 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
446 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
447 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
451 /* rx fifo threshold */
453 RxCfgFIFONone = (7 << RxCfgFIFOShift),
457 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
459 /* rx ring buffer length */
461 RxCfgRcv16K = (1 << 11),
462 RxCfgRcv32K = (1 << 12),
463 RxCfgRcv64K = (1 << 11) | (1 << 12),
465 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
469 /* Twister tuning parameters from RealTek.
470 Completely undocumented, but required to tune bad links on some boards. */
472 CSCR_LinkOKBit = 0x0400,
473 CSCR_LinkChangeBit = 0x0800,
474 CSCR_LinkStatusBits = 0x0f000,
475 CSCR_LinkDownOffCmd = 0x003c0,
476 CSCR_LinkDownCmd = 0x0f3c0,
481 Cfg9346_Unlock = 0xC0,
498 HasHltClk = (1 << 0),
502 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
503 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
504 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
506 /* directly indexed by chip_t, above */
507 static const struct {
509 u32 version; /* from RTL8139C/RTL8139D docs */
511 } rtl_chip_info[] = {
513 HW_REVID(1, 0, 0, 0, 0, 0, 0),
518 HW_REVID(1, 1, 0, 0, 0, 0, 0),
523 HW_REVID(1, 1, 1, 0, 0, 0, 0),
524 HasHltClk, /* XXX undocumented? */
528 HW_REVID(1, 1, 1, 0, 0, 1, 0),
529 HasHltClk, /* XXX undocumented? */
533 HW_REVID(1, 1, 1, 1, 0, 0, 0),
538 HW_REVID(1, 1, 1, 1, 1, 0, 0),
543 HW_REVID(1, 1, 1, 0, 1, 0, 0),
548 HW_REVID(1, 1, 1, 1, 0, 1, 0),
553 HW_REVID(1, 1, 1, 0, 1, 0, 1),
554 HasHltClk /* XXX undocumented? */
559 HW_REVID(1, 1, 1, 0, 1, 1, 1),
564 struct rtl_extra_stats {
565 unsigned long early_rx;
566 unsigned long tx_buf_mapped;
567 unsigned long tx_timeouts;
568 unsigned long rx_lost_in_ring;
571 struct rtl8139_private {
572 void __iomem *mmio_addr;
574 struct pci_dev *pci_dev;
576 struct napi_struct napi;
577 struct net_device *dev;
579 unsigned char *rx_ring;
580 unsigned int cur_rx; /* RX buf index of next pkt */
581 dma_addr_t rx_ring_dma;
583 unsigned int tx_flag;
584 unsigned long cur_tx;
585 unsigned long dirty_tx;
586 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
587 unsigned char *tx_bufs; /* Tx bounce buffer region. */
588 dma_addr_t tx_bufs_dma;
590 signed char phys[4]; /* MII device addresses. */
592 /* Twister tune state. */
593 char twistie, twist_row, twist_col;
595 unsigned int watchdog_fired : 1;
596 unsigned int default_port : 4; /* Last dev->if_port value. */
597 unsigned int have_thread : 1;
604 struct rtl_extra_stats xstats;
606 struct delayed_work thread;
608 struct mii_if_info mii;
609 unsigned int regs_len;
610 unsigned long fifo_copy_timeout;
613 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
614 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
615 MODULE_LICENSE("GPL");
616 MODULE_VERSION(DRV_VERSION);
618 module_param(use_io, int, 0);
619 MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO");
620 module_param(multicast_filter_limit, int, 0);
621 module_param_array(media, int, NULL, 0);
622 module_param_array(full_duplex, int, NULL, 0);
623 module_param(debug, int, 0);
624 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
625 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
626 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
627 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
629 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
630 static int rtl8139_open (struct net_device *dev);
631 static int mdio_read (struct net_device *dev, int phy_id, int location);
632 static void mdio_write (struct net_device *dev, int phy_id, int location,
634 static void rtl8139_start_thread(struct rtl8139_private *tp);
635 static void rtl8139_tx_timeout (struct net_device *dev);
636 static void rtl8139_init_ring (struct net_device *dev);
637 static int rtl8139_start_xmit (struct sk_buff *skb,
638 struct net_device *dev);
639 #ifdef CONFIG_NET_POLL_CONTROLLER
640 static void rtl8139_poll_controller(struct net_device *dev);
642 static int rtl8139_poll(struct napi_struct *napi, int budget);
643 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance);
644 static int rtl8139_close (struct net_device *dev);
645 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
646 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
647 static void rtl8139_set_rx_mode (struct net_device *dev);
648 static void __set_rx_mode (struct net_device *dev);
649 static void rtl8139_hw_start (struct net_device *dev);
650 static void rtl8139_thread (struct work_struct *work);
651 static void rtl8139_tx_timeout_task(struct work_struct *work);
652 static const struct ethtool_ops rtl8139_ethtool_ops;
654 /* write MMIO register, with flush */
655 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
656 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
657 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
658 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
660 /* write MMIO register */
661 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
662 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
663 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
665 /* read MMIO register */
666 #define RTL_R8(reg) ioread8 (ioaddr + (reg))
667 #define RTL_R16(reg) ioread16 (ioaddr + (reg))
668 #define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
671 static const u16 rtl8139_intr_mask =
672 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
673 TxErr | TxOK | RxErr | RxOK;
675 static const u16 rtl8139_norx_intr_mask =
676 PCIErr | PCSTimeout | RxUnderrun |
677 TxErr | TxOK | RxErr ;
680 static const unsigned int rtl8139_rx_config =
681 RxCfgRcv8K | RxNoWrap |
682 (RX_FIFO_THRESH << RxCfgFIFOShift) |
683 (RX_DMA_BURST << RxCfgDMAShift);
684 #elif RX_BUF_IDX == 1
685 static const unsigned int rtl8139_rx_config =
686 RxCfgRcv16K | RxNoWrap |
687 (RX_FIFO_THRESH << RxCfgFIFOShift) |
688 (RX_DMA_BURST << RxCfgDMAShift);
689 #elif RX_BUF_IDX == 2
690 static const unsigned int rtl8139_rx_config =
691 RxCfgRcv32K | RxNoWrap |
692 (RX_FIFO_THRESH << RxCfgFIFOShift) |
693 (RX_DMA_BURST << RxCfgDMAShift);
694 #elif RX_BUF_IDX == 3
695 static const unsigned int rtl8139_rx_config =
697 (RX_FIFO_THRESH << RxCfgFIFOShift) |
698 (RX_DMA_BURST << RxCfgDMAShift);
700 #error "Invalid configuration for 8139_RXBUF_IDX"
703 static const unsigned int rtl8139_tx_config =
704 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
706 static void __rtl8139_cleanup_dev (struct net_device *dev)
708 struct rtl8139_private *tp = netdev_priv(dev);
709 struct pci_dev *pdev;
711 assert (dev != NULL);
712 assert (tp->pci_dev != NULL);
716 pci_iounmap (pdev, tp->mmio_addr);
718 /* it's ok to call this even if we have no regions to free */
719 pci_release_regions (pdev);
722 pci_set_drvdata (pdev, NULL);
726 static void rtl8139_chip_reset (void __iomem *ioaddr)
730 /* Soft reset the chip. */
731 RTL_W8 (ChipCmd, CmdReset);
733 /* Check that the chip has finished the reset. */
734 for (i = 1000; i > 0; i--) {
736 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
743 static int __devinit rtl8139_init_board (struct pci_dev *pdev,
744 struct net_device **dev_out)
746 void __iomem *ioaddr;
747 struct net_device *dev;
748 struct rtl8139_private *tp;
750 int rc, disable_dev_on_err = 0;
752 unsigned long pio_start, pio_end, pio_flags, pio_len;
753 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
756 assert (pdev != NULL);
760 /* dev and priv zeroed in alloc_etherdev */
761 dev = alloc_etherdev (sizeof (*tp));
763 dev_err(&pdev->dev, "Unable to alloc new net device\n");
766 SET_NETDEV_DEV(dev, &pdev->dev);
768 tp = netdev_priv(dev);
771 /* enable device (incl. PCI PM wakeup and hotplug setup) */
772 rc = pci_enable_device (pdev);
776 pio_start = pci_resource_start (pdev, 0);
777 pio_end = pci_resource_end (pdev, 0);
778 pio_flags = pci_resource_flags (pdev, 0);
779 pio_len = pci_resource_len (pdev, 0);
781 mmio_start = pci_resource_start (pdev, 1);
782 mmio_end = pci_resource_end (pdev, 1);
783 mmio_flags = pci_resource_flags (pdev, 1);
784 mmio_len = pci_resource_len (pdev, 1);
786 /* set this immediately, we need to know before
787 * we talk to the chip directly */
788 DPRINTK("PIO region size == 0x%02X\n", pio_len);
789 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
792 /* make sure PCI base addr 0 is PIO */
793 if (!(pio_flags & IORESOURCE_IO)) {
794 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
798 /* check for weird/broken PCI region reporting */
799 if (pio_len < RTL_MIN_IO_SIZE) {
800 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
805 /* make sure PCI base addr 1 is MMIO */
806 if (!(mmio_flags & IORESOURCE_MEM)) {
807 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
811 if (mmio_len < RTL_MIN_IO_SIZE) {
812 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
818 rc = pci_request_regions (pdev, DRV_NAME);
821 disable_dev_on_err = 1;
823 /* enable PCI bus-mastering */
824 pci_set_master (pdev);
827 ioaddr = pci_iomap(pdev, 0, 0);
829 dev_err(&pdev->dev, "cannot map PIO, aborting\n");
833 dev->base_addr = pio_start;
834 tp->regs_len = pio_len;
836 /* ioremap MMIO region */
837 ioaddr = pci_iomap(pdev, 1, 0);
838 if (ioaddr == NULL) {
839 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
843 dev->base_addr = (long) ioaddr;
844 tp->regs_len = mmio_len;
846 tp->mmio_addr = ioaddr;
848 /* Bring old chips out of low-power mode. */
849 RTL_W8 (HltClk, 'R');
851 /* check for missing/broken hardware */
852 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
853 dev_err(&pdev->dev, "Chip not responding, ignoring board\n");
858 /* identify chip attached to board */
859 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
860 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
861 if (version == rtl_chip_info[i].version) {
866 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
867 dev_printk (KERN_DEBUG, &pdev->dev,
868 "unknown chip version, assuming RTL-8139\n");
869 dev_printk (KERN_DEBUG, &pdev->dev,
870 "TxConfig = 0x%lx\n", RTL_R32 (TxConfig));
874 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
875 version, i, rtl_chip_info[i].name);
877 if (tp->chipset >= CH_8139B) {
878 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
879 DPRINTK("PCI PM wakeup\n");
880 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
883 new_tmp8 |= Cfg1_PM_Enable;
884 if (new_tmp8 != tmp8) {
885 RTL_W8 (Cfg9346, Cfg9346_Unlock);
886 RTL_W8 (Config1, tmp8);
887 RTL_W8 (Cfg9346, Cfg9346_Lock);
889 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
890 tmp8 = RTL_R8 (Config4);
892 RTL_W8 (Cfg9346, Cfg9346_Unlock);
893 RTL_W8 (Config4, tmp8 & ~LWPTN);
894 RTL_W8 (Cfg9346, Cfg9346_Lock);
898 DPRINTK("Old chip wakeup\n");
899 tmp8 = RTL_R8 (Config1);
900 tmp8 &= ~(SLEEP | PWRDN);
901 RTL_W8 (Config1, tmp8);
904 rtl8139_chip_reset (ioaddr);
910 __rtl8139_cleanup_dev (dev);
911 if (disable_dev_on_err)
912 pci_disable_device (pdev);
917 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
918 const struct pci_device_id *ent)
920 struct net_device *dev = NULL;
921 struct rtl8139_private *tp;
922 int i, addr_len, option;
923 void __iomem *ioaddr;
924 static int board_idx = -1;
925 DECLARE_MAC_BUF(mac);
927 assert (pdev != NULL);
928 assert (ent != NULL);
932 /* when we're built into the kernel, the driver version message
933 * is only printed if at least one 8139 board has been found
937 static int printed_version;
938 if (!printed_version++)
939 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
943 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
944 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
946 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
947 pdev->vendor, pdev->device, pdev->revision);
949 "Use the \"8139cp\" driver for improved performance and stability.\n");
952 i = rtl8139_init_board (pdev, &dev);
956 assert (dev != NULL);
957 tp = netdev_priv(dev);
960 ioaddr = tp->mmio_addr;
961 assert (ioaddr != NULL);
963 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
964 for (i = 0; i < 3; i++)
965 ((__le16 *) (dev->dev_addr))[i] =
966 cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len));
967 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
969 /* The Rtl8139-specific entries in the device structure. */
970 dev->open = rtl8139_open;
971 dev->hard_start_xmit = rtl8139_start_xmit;
972 netif_napi_add(dev, &tp->napi, rtl8139_poll, 64);
973 dev->stop = rtl8139_close;
974 dev->get_stats = rtl8139_get_stats;
975 dev->set_multicast_list = rtl8139_set_rx_mode;
976 dev->do_ioctl = netdev_ioctl;
977 dev->ethtool_ops = &rtl8139_ethtool_ops;
978 dev->tx_timeout = rtl8139_tx_timeout;
979 dev->watchdog_timeo = TX_TIMEOUT;
980 #ifdef CONFIG_NET_POLL_CONTROLLER
981 dev->poll_controller = rtl8139_poll_controller;
984 /* note: the hardware is not capable of sg/csum/highdma, however
985 * through the use of skb_copy_and_csum_dev we enable these
988 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
990 dev->irq = pdev->irq;
992 /* tp zeroed and aligned in alloc_etherdev */
993 tp = netdev_priv(dev);
995 /* note: tp->chipset set in rtl8139_init_board */
996 tp->drv_flags = board_info[ent->driver_data].hw_flags;
997 tp->mmio_addr = ioaddr;
999 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1000 spin_lock_init (&tp->lock);
1001 spin_lock_init (&tp->rx_lock);
1002 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1004 tp->mii.mdio_read = mdio_read;
1005 tp->mii.mdio_write = mdio_write;
1006 tp->mii.phy_id_mask = 0x3f;
1007 tp->mii.reg_num_mask = 0x1f;
1009 /* dev is fully set up and ready to use now */
1010 DPRINTK("about to register device named %s (%p)...\n", dev->name, dev);
1011 i = register_netdev (dev);
1012 if (i) goto err_out;
1014 pci_set_drvdata (pdev, dev);
1016 printk (KERN_INFO "%s: %s at 0x%lx, "
1019 board_info[ent->driver_data].name,
1021 print_mac(mac, dev->dev_addr),
1024 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
1025 dev->name, rtl_chip_info[tp->chipset].name);
1027 /* Find the connected MII xcvrs.
1028 Doing this in open() would allow detecting external xcvrs later, but
1029 takes too much time. */
1030 #ifdef CONFIG_8139TOO_8129
1031 if (tp->drv_flags & HAS_MII_XCVR) {
1032 int phy, phy_idx = 0;
1033 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1034 int mii_status = mdio_read(dev, phy, 1);
1035 if (mii_status != 0xffff && mii_status != 0x0000) {
1036 u16 advertising = mdio_read(dev, phy, 4);
1037 tp->phys[phy_idx++] = phy;
1038 printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x "
1039 "advertising %4.4x.\n",
1040 dev->name, phy, mii_status, advertising);
1044 printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
1052 tp->mii.phy_id = tp->phys[0];
1054 /* The lower four bits are the media type. */
1055 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1057 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1058 tp->default_port = option & 0xFF;
1059 if (tp->default_port)
1060 tp->mii.force_media = 1;
1062 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1063 tp->mii.full_duplex = full_duplex[board_idx];
1064 if (tp->mii.full_duplex) {
1065 printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
1066 /* Changing the MII-advertised media because might prevent
1068 tp->mii.force_media = 1;
1070 if (tp->default_port) {
1071 printk(KERN_INFO " Forcing %dMbps %s-duplex operation.\n",
1072 (option & 0x20 ? 100 : 10),
1073 (option & 0x10 ? "full" : "half"));
1074 mdio_write(dev, tp->phys[0], 0,
1075 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1076 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1079 /* Put the chip into low-power mode. */
1080 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1081 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1086 __rtl8139_cleanup_dev (dev);
1087 pci_disable_device (pdev);
1092 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1094 struct net_device *dev = pci_get_drvdata (pdev);
1096 assert (dev != NULL);
1098 flush_scheduled_work();
1100 unregister_netdev (dev);
1102 __rtl8139_cleanup_dev (dev);
1103 pci_disable_device (pdev);
1107 /* Serial EEPROM section. */
1109 /* EEPROM_Ctrl bits. */
1110 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1111 #define EE_CS 0x08 /* EEPROM chip select. */
1112 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1113 #define EE_WRITE_0 0x00
1114 #define EE_WRITE_1 0x02
1115 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1116 #define EE_ENB (0x80 | EE_CS)
1118 /* Delay between EEPROM clock transitions.
1119 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1122 #define eeprom_delay() (void)RTL_R32(Cfg9346)
1124 /* The EEPROM commands include the alway-set leading bit. */
1125 #define EE_WRITE_CMD (5)
1126 #define EE_READ_CMD (6)
1127 #define EE_ERASE_CMD (7)
1129 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1132 unsigned retval = 0;
1133 int read_cmd = location | (EE_READ_CMD << addr_len);
1135 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1136 RTL_W8 (Cfg9346, EE_ENB);
1139 /* Shift the read command bits out. */
1140 for (i = 4 + addr_len; i >= 0; i--) {
1141 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1142 RTL_W8 (Cfg9346, EE_ENB | dataval);
1144 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1147 RTL_W8 (Cfg9346, EE_ENB);
1150 for (i = 16; i > 0; i--) {
1151 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1154 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1156 RTL_W8 (Cfg9346, EE_ENB);
1160 /* Terminate the EEPROM access. */
1161 RTL_W8 (Cfg9346, ~EE_CS);
1167 /* MII serial management: mostly bogus for now. */
1168 /* Read and write the MII management registers using software-generated
1169 serial MDIO protocol.
1170 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1171 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1172 "overclocking" issues. */
1173 #define MDIO_DIR 0x80
1174 #define MDIO_DATA_OUT 0x04
1175 #define MDIO_DATA_IN 0x02
1176 #define MDIO_CLK 0x01
1177 #define MDIO_WRITE0 (MDIO_DIR)
1178 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1180 #define mdio_delay() RTL_R8(Config4)
1183 static const char mii_2_8139_map[8] = {
1195 #ifdef CONFIG_8139TOO_8129
1196 /* Syncronize the MII management interface by shifting 32 one bits out. */
1197 static void mdio_sync (void __iomem *ioaddr)
1201 for (i = 32; i >= 0; i--) {
1202 RTL_W8 (Config4, MDIO_WRITE1);
1204 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1210 static int mdio_read (struct net_device *dev, int phy_id, int location)
1212 struct rtl8139_private *tp = netdev_priv(dev);
1214 #ifdef CONFIG_8139TOO_8129
1215 void __iomem *ioaddr = tp->mmio_addr;
1216 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1220 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1221 void __iomem *ioaddr = tp->mmio_addr;
1222 return location < 8 && mii_2_8139_map[location] ?
1223 RTL_R16 (mii_2_8139_map[location]) : 0;
1226 #ifdef CONFIG_8139TOO_8129
1228 /* Shift the read command bits out. */
1229 for (i = 15; i >= 0; i--) {
1230 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1232 RTL_W8 (Config4, MDIO_DIR | dataval);
1234 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1238 /* Read the two transition, 16 data, and wire-idle bits. */
1239 for (i = 19; i > 0; i--) {
1240 RTL_W8 (Config4, 0);
1242 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1243 RTL_W8 (Config4, MDIO_CLK);
1248 return (retval >> 1) & 0xffff;
1252 static void mdio_write (struct net_device *dev, int phy_id, int location,
1255 struct rtl8139_private *tp = netdev_priv(dev);
1256 #ifdef CONFIG_8139TOO_8129
1257 void __iomem *ioaddr = tp->mmio_addr;
1258 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1262 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1263 void __iomem *ioaddr = tp->mmio_addr;
1264 if (location == 0) {
1265 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1266 RTL_W16 (BasicModeCtrl, value);
1267 RTL_W8 (Cfg9346, Cfg9346_Lock);
1268 } else if (location < 8 && mii_2_8139_map[location])
1269 RTL_W16 (mii_2_8139_map[location], value);
1273 #ifdef CONFIG_8139TOO_8129
1276 /* Shift the command bits out. */
1277 for (i = 31; i >= 0; i--) {
1279 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1280 RTL_W8 (Config4, dataval);
1282 RTL_W8 (Config4, dataval | MDIO_CLK);
1285 /* Clear out extra bits. */
1286 for (i = 2; i > 0; i--) {
1287 RTL_W8 (Config4, 0);
1289 RTL_W8 (Config4, MDIO_CLK);
1296 static int rtl8139_open (struct net_device *dev)
1298 struct rtl8139_private *tp = netdev_priv(dev);
1300 void __iomem *ioaddr = tp->mmio_addr;
1302 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev);
1306 tp->tx_bufs = dma_alloc_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1307 &tp->tx_bufs_dma, GFP_KERNEL);
1308 tp->rx_ring = dma_alloc_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1309 &tp->rx_ring_dma, GFP_KERNEL);
1310 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1311 free_irq(dev->irq, dev);
1314 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1315 tp->tx_bufs, tp->tx_bufs_dma);
1317 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1318 tp->rx_ring, tp->rx_ring_dma);
1324 napi_enable(&tp->napi);
1326 tp->mii.full_duplex = tp->mii.force_media;
1327 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1329 rtl8139_init_ring (dev);
1330 rtl8139_hw_start (dev);
1331 netif_start_queue (dev);
1333 if (netif_msg_ifup(tp))
1334 printk(KERN_DEBUG "%s: rtl8139_open() ioaddr %#llx IRQ %d"
1335 " GP Pins %2.2x %s-duplex.\n", dev->name,
1336 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1337 dev->irq, RTL_R8 (MediaStatus),
1338 tp->mii.full_duplex ? "full" : "half");
1340 rtl8139_start_thread(tp);
1346 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1348 struct rtl8139_private *tp = netdev_priv(dev);
1350 if (tp->phys[0] >= 0) {
1351 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1355 /* Start the hardware at open or resume. */
1356 static void rtl8139_hw_start (struct net_device *dev)
1358 struct rtl8139_private *tp = netdev_priv(dev);
1359 void __iomem *ioaddr = tp->mmio_addr;
1363 /* Bring old chips out of low-power mode. */
1364 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1365 RTL_W8 (HltClk, 'R');
1367 rtl8139_chip_reset (ioaddr);
1369 /* unlock Config[01234] and BMCR register writes */
1370 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1371 /* Restore our idea of the MAC address. */
1372 RTL_W32_F (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
1373 RTL_W32_F (MAC0 + 4, le16_to_cpu (*(__le16 *) (dev->dev_addr + 4)));
1375 /* Must enable Tx/Rx before setting transfer thresholds! */
1376 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1378 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1379 RTL_W32 (RxConfig, tp->rx_config);
1380 RTL_W32 (TxConfig, rtl8139_tx_config);
1384 rtl_check_media (dev, 1);
1386 if (tp->chipset >= CH_8139B) {
1387 /* Disable magic packet scanning, which is enabled
1388 * when PM is enabled in Config1. It can be reenabled
1389 * via ETHTOOL_SWOL if desired. */
1390 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1393 DPRINTK("init buffer addresses\n");
1395 /* Lock Config[01234] and BMCR register writes */
1396 RTL_W8 (Cfg9346, Cfg9346_Lock);
1398 /* init Rx ring buffer DMA address */
1399 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1401 /* init Tx buffer DMA addresses */
1402 for (i = 0; i < NUM_TX_DESC; i++)
1403 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1405 RTL_W32 (RxMissed, 0);
1407 rtl8139_set_rx_mode (dev);
1409 /* no early-rx interrupts */
1410 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1412 /* make sure RxTx has started */
1413 tmp = RTL_R8 (ChipCmd);
1414 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1415 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1417 /* Enable all known interrupts by setting the interrupt mask. */
1418 RTL_W16 (IntrMask, rtl8139_intr_mask);
1422 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1423 static void rtl8139_init_ring (struct net_device *dev)
1425 struct rtl8139_private *tp = netdev_priv(dev);
1432 for (i = 0; i < NUM_TX_DESC; i++)
1433 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1437 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1438 static int next_tick = 3 * HZ;
1440 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1441 static inline void rtl8139_tune_twister (struct net_device *dev,
1442 struct rtl8139_private *tp) {}
1444 enum TwisterParamVals {
1445 PARA78_default = 0x78fa8388,
1446 PARA7c_default = 0xcb38de43, /* param[0][3] */
1447 PARA7c_xxx = 0xcb38de43,
1450 static const unsigned long param[4][4] = {
1451 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1452 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1453 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1454 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1457 static void rtl8139_tune_twister (struct net_device *dev,
1458 struct rtl8139_private *tp)
1461 void __iomem *ioaddr = tp->mmio_addr;
1463 /* This is a complicated state machine to configure the "twister" for
1464 impedance/echos based on the cable length.
1465 All of this is magic and undocumented.
1467 switch (tp->twistie) {
1469 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1470 /* We have link beat, let us tune the twister. */
1471 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1472 tp->twistie = 2; /* Change to state 2. */
1473 next_tick = HZ / 10;
1475 /* Just put in some reasonable defaults for when beat returns. */
1476 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1477 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1478 RTL_W32 (PARA78, PARA78_default);
1479 RTL_W32 (PARA7c, PARA7c_default);
1480 tp->twistie = 0; /* Bail from future actions. */
1484 /* Read how long it took to hear the echo. */
1485 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1486 if (linkcase == 0x7000)
1488 else if (linkcase == 0x3000)
1490 else if (linkcase == 0x1000)
1495 tp->twistie = 3; /* Change to state 2. */
1496 next_tick = HZ / 10;
1499 /* Put out four tuning parameters, one per 100msec. */
1500 if (tp->twist_col == 0)
1501 RTL_W16 (FIFOTMS, 0);
1502 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1503 [(int) tp->twist_col]);
1504 next_tick = HZ / 10;
1505 if (++tp->twist_col >= 4) {
1506 /* For short cables we are done.
1507 For long cables (row == 3) check for mistune. */
1509 (tp->twist_row == 3) ? 4 : 0;
1513 /* Special case for long cables: check for mistune. */
1514 if ((RTL_R16 (CSCR) &
1515 CSCR_LinkStatusBits) == 0x7000) {
1519 RTL_W32 (PARA7c, 0xfb38de03);
1521 next_tick = HZ / 10;
1525 /* Retune for shorter cable (column 2). */
1526 RTL_W32 (FIFOTMS, 0x20);
1527 RTL_W32 (PARA78, PARA78_default);
1528 RTL_W32 (PARA7c, PARA7c_default);
1529 RTL_W32 (FIFOTMS, 0x00);
1533 next_tick = HZ / 10;
1541 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1543 static inline void rtl8139_thread_iter (struct net_device *dev,
1544 struct rtl8139_private *tp,
1545 void __iomem *ioaddr)
1549 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1551 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1552 int duplex = (mii_lpa & LPA_100FULL)
1553 || (mii_lpa & 0x01C0) == 0x0040;
1554 if (tp->mii.full_duplex != duplex) {
1555 tp->mii.full_duplex = duplex;
1559 "%s: Setting %s-duplex based on MII #%d link"
1560 " partner ability of %4.4x.\n",
1562 tp->mii.full_duplex ? "full" : "half",
1563 tp->phys[0], mii_lpa);
1565 printk(KERN_INFO"%s: media is unconnected, link down, or incompatible connection\n",
1569 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1570 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1571 RTL_W8 (Cfg9346, Cfg9346_Lock);
1576 next_tick = HZ * 60;
1578 rtl8139_tune_twister (dev, tp);
1580 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1581 dev->name, RTL_R16 (NWayLPAR));
1582 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x\n",
1583 dev->name, RTL_R16 (IntrMask), RTL_R16 (IntrStatus));
1584 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1585 dev->name, RTL_R8 (Config0),
1589 static void rtl8139_thread (struct work_struct *work)
1591 struct rtl8139_private *tp =
1592 container_of(work, struct rtl8139_private, thread.work);
1593 struct net_device *dev = tp->mii.dev;
1594 unsigned long thr_delay = next_tick;
1598 if (!netif_running(dev))
1601 if (tp->watchdog_fired) {
1602 tp->watchdog_fired = 0;
1603 rtl8139_tx_timeout_task(work);
1605 rtl8139_thread_iter(dev, tp, tp->mmio_addr);
1607 if (tp->have_thread)
1608 schedule_delayed_work(&tp->thread, thr_delay);
1613 static void rtl8139_start_thread(struct rtl8139_private *tp)
1616 if (tp->chipset == CH_8139_K)
1618 else if (tp->drv_flags & HAS_LNK_CHNG)
1621 tp->have_thread = 1;
1622 tp->watchdog_fired = 0;
1624 schedule_delayed_work(&tp->thread, next_tick);
1627 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1632 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1635 static void rtl8139_tx_timeout_task (struct work_struct *work)
1637 struct rtl8139_private *tp =
1638 container_of(work, struct rtl8139_private, thread.work);
1639 struct net_device *dev = tp->mii.dev;
1640 void __iomem *ioaddr = tp->mmio_addr;
1644 printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
1645 "media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
1646 RTL_R16(IntrStatus), RTL_R16(IntrMask), RTL_R8(MediaStatus));
1647 /* Emit info to figure out what went wrong. */
1648 printk (KERN_DEBUG "%s: Tx queue start entry %ld dirty entry %ld.\n",
1649 dev->name, tp->cur_tx, tp->dirty_tx);
1650 for (i = 0; i < NUM_TX_DESC; i++)
1651 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1652 dev->name, i, RTL_R32 (TxStatus0 + (i * 4)),
1653 i == tp->dirty_tx % NUM_TX_DESC ?
1654 " (queue head)" : "");
1656 tp->xstats.tx_timeouts++;
1658 /* disable Tx ASAP, if not already */
1659 tmp8 = RTL_R8 (ChipCmd);
1660 if (tmp8 & CmdTxEnb)
1661 RTL_W8 (ChipCmd, CmdRxEnb);
1663 spin_lock_bh(&tp->rx_lock);
1664 /* Disable interrupts by clearing the interrupt mask. */
1665 RTL_W16 (IntrMask, 0x0000);
1667 /* Stop a shared interrupt from scavenging while we are. */
1668 spin_lock_irq(&tp->lock);
1669 rtl8139_tx_clear (tp);
1670 spin_unlock_irq(&tp->lock);
1672 /* ...and finally, reset everything */
1673 if (netif_running(dev)) {
1674 rtl8139_hw_start (dev);
1675 netif_wake_queue (dev);
1677 spin_unlock_bh(&tp->rx_lock);
1680 static void rtl8139_tx_timeout (struct net_device *dev)
1682 struct rtl8139_private *tp = netdev_priv(dev);
1684 tp->watchdog_fired = 1;
1685 if (!tp->have_thread) {
1686 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1687 schedule_delayed_work(&tp->thread, next_tick);
1691 static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
1693 struct rtl8139_private *tp = netdev_priv(dev);
1694 void __iomem *ioaddr = tp->mmio_addr;
1696 unsigned int len = skb->len;
1697 unsigned long flags;
1699 /* Calculate the next Tx descriptor entry. */
1700 entry = tp->cur_tx % NUM_TX_DESC;
1702 /* Note: the chip doesn't have auto-pad! */
1703 if (likely(len < TX_BUF_SIZE)) {
1705 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1706 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1710 dev->stats.tx_dropped++;
1714 spin_lock_irqsave(&tp->lock, flags);
1715 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1716 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1718 dev->trans_start = jiffies;
1723 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1724 netif_stop_queue (dev);
1725 spin_unlock_irqrestore(&tp->lock, flags);
1727 if (netif_msg_tx_queued(tp))
1728 printk (KERN_DEBUG "%s: Queued Tx packet size %u to slot %d.\n",
1729 dev->name, len, entry);
1735 static void rtl8139_tx_interrupt (struct net_device *dev,
1736 struct rtl8139_private *tp,
1737 void __iomem *ioaddr)
1739 unsigned long dirty_tx, tx_left;
1741 assert (dev != NULL);
1742 assert (ioaddr != NULL);
1744 dirty_tx = tp->dirty_tx;
1745 tx_left = tp->cur_tx - dirty_tx;
1746 while (tx_left > 0) {
1747 int entry = dirty_tx % NUM_TX_DESC;
1750 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1752 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1753 break; /* It still hasn't been Txed */
1755 /* Note: TxCarrierLost is always asserted at 100mbps. */
1756 if (txstatus & (TxOutOfWindow | TxAborted)) {
1757 /* There was an major error, log it. */
1758 if (netif_msg_tx_err(tp))
1759 printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
1760 dev->name, txstatus);
1761 dev->stats.tx_errors++;
1762 if (txstatus & TxAborted) {
1763 dev->stats.tx_aborted_errors++;
1764 RTL_W32 (TxConfig, TxClearAbt);
1765 RTL_W16 (IntrStatus, TxErr);
1768 if (txstatus & TxCarrierLost)
1769 dev->stats.tx_carrier_errors++;
1770 if (txstatus & TxOutOfWindow)
1771 dev->stats.tx_window_errors++;
1773 if (txstatus & TxUnderrun) {
1774 /* Add 64 to the Tx FIFO threshold. */
1775 if (tp->tx_flag < 0x00300000)
1776 tp->tx_flag += 0x00020000;
1777 dev->stats.tx_fifo_errors++;
1779 dev->stats.collisions += (txstatus >> 24) & 15;
1780 dev->stats.tx_bytes += txstatus & 0x7ff;
1781 dev->stats.tx_packets++;
1788 #ifndef RTL8139_NDEBUG
1789 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1790 printk (KERN_ERR "%s: Out-of-sync dirty pointer, %ld vs. %ld.\n",
1791 dev->name, dirty_tx, tp->cur_tx);
1792 dirty_tx += NUM_TX_DESC;
1794 #endif /* RTL8139_NDEBUG */
1796 /* only wake the queue if we did work, and the queue is stopped */
1797 if (tp->dirty_tx != dirty_tx) {
1798 tp->dirty_tx = dirty_tx;
1800 netif_wake_queue (dev);
1805 /* TODO: clean this up! Rx reset need not be this intensive */
1806 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1807 struct rtl8139_private *tp, void __iomem *ioaddr)
1810 #ifdef CONFIG_8139_OLD_RX_RESET
1814 if (netif_msg_rx_err (tp))
1815 printk(KERN_DEBUG "%s: Ethernet frame had errors, status %8.8x.\n",
1816 dev->name, rx_status);
1817 dev->stats.rx_errors++;
1818 if (!(rx_status & RxStatusOK)) {
1819 if (rx_status & RxTooLong) {
1820 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1821 dev->name, rx_status);
1822 /* A.C.: The chip hangs here. */
1824 if (rx_status & (RxBadSymbol | RxBadAlign))
1825 dev->stats.rx_frame_errors++;
1826 if (rx_status & (RxRunt | RxTooLong))
1827 dev->stats.rx_length_errors++;
1828 if (rx_status & RxCRCErr)
1829 dev->stats.rx_crc_errors++;
1831 tp->xstats.rx_lost_in_ring++;
1834 #ifndef CONFIG_8139_OLD_RX_RESET
1835 tmp8 = RTL_R8 (ChipCmd);
1836 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1837 RTL_W8 (ChipCmd, tmp8);
1838 RTL_W32 (RxConfig, tp->rx_config);
1841 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1843 /* disable receive */
1844 RTL_W8_F (ChipCmd, CmdTxEnb);
1846 while (--tmp_work > 0) {
1848 tmp8 = RTL_R8 (ChipCmd);
1849 if (!(tmp8 & CmdRxEnb))
1853 printk (KERN_WARNING PFX "rx stop wait too long\n");
1854 /* restart receive */
1856 while (--tmp_work > 0) {
1857 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1859 tmp8 = RTL_R8 (ChipCmd);
1860 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1864 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1866 /* and reinitialize all rx related registers */
1867 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1868 /* Must enable Tx/Rx before setting transfer thresholds! */
1869 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1871 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1872 RTL_W32 (RxConfig, tp->rx_config);
1875 DPRINTK("init buffer addresses\n");
1877 /* Lock Config[01234] and BMCR register writes */
1878 RTL_W8 (Cfg9346, Cfg9346_Lock);
1880 /* init Rx ring buffer DMA address */
1881 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1883 /* A.C.: Reset the multicast list. */
1884 __set_rx_mode (dev);
1889 static inline void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1890 u32 offset, unsigned int size)
1892 u32 left = RX_BUF_LEN - offset;
1895 skb_copy_to_linear_data(skb, ring + offset, left);
1896 skb_copy_to_linear_data_offset(skb, left, ring, size - left);
1898 skb_copy_to_linear_data(skb, ring + offset, size);
1902 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1904 void __iomem *ioaddr = tp->mmio_addr;
1907 status = RTL_R16 (IntrStatus) & RxAckBits;
1909 /* Clear out errors and receive interrupts */
1910 if (likely(status != 0)) {
1911 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1912 tp->dev->stats.rx_errors++;
1913 if (status & RxFIFOOver)
1914 tp->dev->stats.rx_fifo_errors++;
1916 RTL_W16_F (IntrStatus, RxAckBits);
1920 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1923 void __iomem *ioaddr = tp->mmio_addr;
1925 unsigned char *rx_ring = tp->rx_ring;
1926 unsigned int cur_rx = tp->cur_rx;
1927 unsigned int rx_size = 0;
1929 DPRINTK ("%s: In rtl8139_rx(), current %4.4x BufAddr %4.4x,"
1930 " free to %4.4x, Cmd %2.2x.\n", dev->name, (u16)cur_rx,
1931 RTL_R16 (RxBufAddr),
1932 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
1934 while (netif_running(dev) && received < budget
1935 && (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1936 u32 ring_offset = cur_rx % RX_BUF_LEN;
1938 unsigned int pkt_size;
1939 struct sk_buff *skb;
1943 /* read size+status of next frame from DMA ring buffer */
1944 rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset));
1945 rx_size = rx_status >> 16;
1946 pkt_size = rx_size - 4;
1948 if (netif_msg_rx_status(tp))
1949 printk(KERN_DEBUG "%s: rtl8139_rx() status %4.4x, size %4.4x,"
1950 " cur %4.4x.\n", dev->name, rx_status,
1952 #if RTL8139_DEBUG > 2
1955 DPRINTK ("%s: Frame contents ", dev->name);
1956 for (i = 0; i < 70; i++)
1958 rx_ring[ring_offset + i]);
1963 /* Packet copy from FIFO still in progress.
1964 * Theoretically, this should never happen
1965 * since EarlyRx is disabled.
1967 if (unlikely(rx_size == 0xfff0)) {
1968 if (!tp->fifo_copy_timeout)
1969 tp->fifo_copy_timeout = jiffies + 2;
1970 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1971 DPRINTK ("%s: hung FIFO. Reset.", dev->name);
1975 if (netif_msg_intr(tp)) {
1976 printk(KERN_DEBUG "%s: fifo copy in progress.",
1979 tp->xstats.early_rx++;
1984 tp->fifo_copy_timeout = 0;
1986 /* If Rx err or invalid rx_size/rx_status received
1987 * (which happens if we get lost in the ring),
1988 * Rx process gets reset, so we abort any further
1991 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
1993 (!(rx_status & RxStatusOK)))) {
1994 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
1999 /* Malloc up new buffer, compatible with net-2e. */
2000 /* Omit the four octet CRC from the length. */
2002 skb = dev_alloc_skb (pkt_size + 2);
2004 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
2006 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
2008 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
2010 skb_put (skb, pkt_size);
2012 skb->protocol = eth_type_trans (skb, dev);
2014 dev->last_rx = jiffies;
2015 dev->stats.rx_bytes += pkt_size;
2016 dev->stats.rx_packets++;
2018 netif_receive_skb (skb);
2020 if (net_ratelimit())
2021 printk (KERN_WARNING
2022 "%s: Memory squeeze, dropping packet.\n",
2024 dev->stats.rx_dropped++;
2028 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2029 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2031 rtl8139_isr_ack(tp);
2034 if (unlikely(!received || rx_size == 0xfff0))
2035 rtl8139_isr_ack(tp);
2037 #if RTL8139_DEBUG > 1
2038 DPRINTK ("%s: Done rtl8139_rx(), current %4.4x BufAddr %4.4x,"
2039 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
2040 RTL_R16 (RxBufAddr),
2041 RTL_R16 (RxBufPtr), RTL_R8 (ChipCmd));
2044 tp->cur_rx = cur_rx;
2047 * The receive buffer should be mostly empty.
2048 * Tell NAPI to reenable the Rx irq.
2050 if (tp->fifo_copy_timeout)
2058 static void rtl8139_weird_interrupt (struct net_device *dev,
2059 struct rtl8139_private *tp,
2060 void __iomem *ioaddr,
2061 int status, int link_changed)
2063 DPRINTK ("%s: Abnormal interrupt, status %8.8x.\n",
2066 assert (dev != NULL);
2067 assert (tp != NULL);
2068 assert (ioaddr != NULL);
2070 /* Update the error count. */
2071 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2072 RTL_W32 (RxMissed, 0);
2074 if ((status & RxUnderrun) && link_changed &&
2075 (tp->drv_flags & HAS_LNK_CHNG)) {
2076 rtl_check_media(dev, 0);
2077 status &= ~RxUnderrun;
2080 if (status & (RxUnderrun | RxErr))
2081 dev->stats.rx_errors++;
2083 if (status & PCSTimeout)
2084 dev->stats.rx_length_errors++;
2085 if (status & RxUnderrun)
2086 dev->stats.rx_fifo_errors++;
2087 if (status & PCIErr) {
2089 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2090 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2092 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
2093 dev->name, pci_cmd_status);
2097 static int rtl8139_poll(struct napi_struct *napi, int budget)
2099 struct rtl8139_private *tp = container_of(napi, struct rtl8139_private, napi);
2100 struct net_device *dev = tp->dev;
2101 void __iomem *ioaddr = tp->mmio_addr;
2104 spin_lock(&tp->rx_lock);
2106 if (likely(RTL_R16(IntrStatus) & RxAckBits))
2107 work_done += rtl8139_rx(dev, tp, budget);
2109 if (work_done < budget) {
2110 unsigned long flags;
2112 * Order is important since data can get interrupted
2113 * again when we think we are done.
2115 spin_lock_irqsave(&tp->lock, flags);
2116 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2117 __netif_rx_complete(dev, napi);
2118 spin_unlock_irqrestore(&tp->lock, flags);
2120 spin_unlock(&tp->rx_lock);
2125 /* The interrupt handler does all of the Rx thread work and cleans up
2126 after the Tx thread. */
2127 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance)
2129 struct net_device *dev = (struct net_device *) dev_instance;
2130 struct rtl8139_private *tp = netdev_priv(dev);
2131 void __iomem *ioaddr = tp->mmio_addr;
2132 u16 status, ackstat;
2133 int link_changed = 0; /* avoid bogus "uninit" warning */
2136 spin_lock (&tp->lock);
2137 status = RTL_R16 (IntrStatus);
2140 if (unlikely((status & rtl8139_intr_mask) == 0))
2145 /* h/w no longer present (hotplug?) or major error, bail */
2146 if (unlikely(status == 0xFFFF))
2149 /* close possible race's with dev_close */
2150 if (unlikely(!netif_running(dev))) {
2151 RTL_W16 (IntrMask, 0);
2155 /* Acknowledge all of the current interrupt sources ASAP, but
2156 an first get an additional status bit from CSCR. */
2157 if (unlikely(status & RxUnderrun))
2158 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2160 ackstat = status & ~(RxAckBits | TxErr);
2162 RTL_W16 (IntrStatus, ackstat);
2164 /* Receive packets are processed by poll routine.
2165 If not running start it now. */
2166 if (status & RxAckBits){
2167 if (netif_rx_schedule_prep(dev, &tp->napi)) {
2168 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2169 __netif_rx_schedule(dev, &tp->napi);
2173 /* Check uncommon events with one test. */
2174 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2175 rtl8139_weird_interrupt (dev, tp, ioaddr,
2176 status, link_changed);
2178 if (status & (TxOK | TxErr)) {
2179 rtl8139_tx_interrupt (dev, tp, ioaddr);
2181 RTL_W16 (IntrStatus, TxErr);
2184 spin_unlock (&tp->lock);
2186 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
2187 dev->name, RTL_R16 (IntrStatus));
2188 return IRQ_RETVAL(handled);
2191 #ifdef CONFIG_NET_POLL_CONTROLLER
2193 * Polling receive - used by netconsole and other diagnostic tools
2194 * to allow network i/o with interrupts disabled.
2196 static void rtl8139_poll_controller(struct net_device *dev)
2198 disable_irq(dev->irq);
2199 rtl8139_interrupt(dev->irq, dev);
2200 enable_irq(dev->irq);
2204 static int rtl8139_close (struct net_device *dev)
2206 struct rtl8139_private *tp = netdev_priv(dev);
2207 void __iomem *ioaddr = tp->mmio_addr;
2208 unsigned long flags;
2210 netif_stop_queue(dev);
2211 napi_disable(&tp->napi);
2213 if (netif_msg_ifdown(tp))
2214 printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
2215 dev->name, RTL_R16 (IntrStatus));
2217 spin_lock_irqsave (&tp->lock, flags);
2219 /* Stop the chip's Tx and Rx DMA processes. */
2220 RTL_W8 (ChipCmd, 0);
2222 /* Disable interrupts by clearing the interrupt mask. */
2223 RTL_W16 (IntrMask, 0);
2225 /* Update the error counts. */
2226 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2227 RTL_W32 (RxMissed, 0);
2229 spin_unlock_irqrestore (&tp->lock, flags);
2231 free_irq (dev->irq, dev);
2233 rtl8139_tx_clear (tp);
2235 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
2236 tp->rx_ring, tp->rx_ring_dma);
2237 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
2238 tp->tx_bufs, tp->tx_bufs_dma);
2242 /* Green! Put the chip in low-power mode. */
2243 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2245 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2246 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2252 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2253 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2254 other threads or interrupts aren't messing with the 8139. */
2255 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2257 struct rtl8139_private *np = netdev_priv(dev);
2258 void __iomem *ioaddr = np->mmio_addr;
2260 spin_lock_irq(&np->lock);
2261 if (rtl_chip_info[np->chipset].flags & HasLWake) {
2262 u8 cfg3 = RTL_R8 (Config3);
2263 u8 cfg5 = RTL_R8 (Config5);
2265 wol->supported = WAKE_PHY | WAKE_MAGIC
2266 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2269 if (cfg3 & Cfg3_LinkUp)
2270 wol->wolopts |= WAKE_PHY;
2271 if (cfg3 & Cfg3_Magic)
2272 wol->wolopts |= WAKE_MAGIC;
2273 /* (KON)FIXME: See how netdev_set_wol() handles the
2274 following constants. */
2275 if (cfg5 & Cfg5_UWF)
2276 wol->wolopts |= WAKE_UCAST;
2277 if (cfg5 & Cfg5_MWF)
2278 wol->wolopts |= WAKE_MCAST;
2279 if (cfg5 & Cfg5_BWF)
2280 wol->wolopts |= WAKE_BCAST;
2282 spin_unlock_irq(&np->lock);
2286 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2287 that wol points to kernel memory and other threads or interrupts
2288 aren't messing with the 8139. */
2289 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2291 struct rtl8139_private *np = netdev_priv(dev);
2292 void __iomem *ioaddr = np->mmio_addr;
2296 support = ((rtl_chip_info[np->chipset].flags & HasLWake)
2297 ? (WAKE_PHY | WAKE_MAGIC
2298 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2300 if (wol->wolopts & ~support)
2303 spin_lock_irq(&np->lock);
2304 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2305 if (wol->wolopts & WAKE_PHY)
2306 cfg3 |= Cfg3_LinkUp;
2307 if (wol->wolopts & WAKE_MAGIC)
2309 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2310 RTL_W8 (Config3, cfg3);
2311 RTL_W8 (Cfg9346, Cfg9346_Lock);
2313 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2314 /* (KON)FIXME: These are untested. We may have to set the
2315 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2317 if (wol->wolopts & WAKE_UCAST)
2319 if (wol->wolopts & WAKE_MCAST)
2321 if (wol->wolopts & WAKE_BCAST)
2323 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2324 spin_unlock_irq(&np->lock);
2329 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2331 struct rtl8139_private *np = netdev_priv(dev);
2332 strcpy(info->driver, DRV_NAME);
2333 strcpy(info->version, DRV_VERSION);
2334 strcpy(info->bus_info, pci_name(np->pci_dev));
2335 info->regdump_len = np->regs_len;
2338 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2340 struct rtl8139_private *np = netdev_priv(dev);
2341 spin_lock_irq(&np->lock);
2342 mii_ethtool_gset(&np->mii, cmd);
2343 spin_unlock_irq(&np->lock);
2347 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2349 struct rtl8139_private *np = netdev_priv(dev);
2351 spin_lock_irq(&np->lock);
2352 rc = mii_ethtool_sset(&np->mii, cmd);
2353 spin_unlock_irq(&np->lock);
2357 static int rtl8139_nway_reset(struct net_device *dev)
2359 struct rtl8139_private *np = netdev_priv(dev);
2360 return mii_nway_restart(&np->mii);
2363 static u32 rtl8139_get_link(struct net_device *dev)
2365 struct rtl8139_private *np = netdev_priv(dev);
2366 return mii_link_ok(&np->mii);
2369 static u32 rtl8139_get_msglevel(struct net_device *dev)
2371 struct rtl8139_private *np = netdev_priv(dev);
2372 return np->msg_enable;
2375 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2377 struct rtl8139_private *np = netdev_priv(dev);
2378 np->msg_enable = datum;
2381 static int rtl8139_get_regs_len(struct net_device *dev)
2383 struct rtl8139_private *np;
2384 /* TODO: we are too slack to do reg dumping for pio, for now */
2387 np = netdev_priv(dev);
2388 return np->regs_len;
2391 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2393 struct rtl8139_private *np;
2395 /* TODO: we are too slack to do reg dumping for pio, for now */
2398 np = netdev_priv(dev);
2400 regs->version = RTL_REGS_VER;
2402 spin_lock_irq(&np->lock);
2403 memcpy_fromio(regbuf, np->mmio_addr, regs->len);
2404 spin_unlock_irq(&np->lock);
2407 static int rtl8139_get_sset_count(struct net_device *dev, int sset)
2411 return RTL_NUM_STATS;
2417 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2419 struct rtl8139_private *np = netdev_priv(dev);
2421 data[0] = np->xstats.early_rx;
2422 data[1] = np->xstats.tx_buf_mapped;
2423 data[2] = np->xstats.tx_timeouts;
2424 data[3] = np->xstats.rx_lost_in_ring;
2427 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2429 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2432 static const struct ethtool_ops rtl8139_ethtool_ops = {
2433 .get_drvinfo = rtl8139_get_drvinfo,
2434 .get_settings = rtl8139_get_settings,
2435 .set_settings = rtl8139_set_settings,
2436 .get_regs_len = rtl8139_get_regs_len,
2437 .get_regs = rtl8139_get_regs,
2438 .nway_reset = rtl8139_nway_reset,
2439 .get_link = rtl8139_get_link,
2440 .get_msglevel = rtl8139_get_msglevel,
2441 .set_msglevel = rtl8139_set_msglevel,
2442 .get_wol = rtl8139_get_wol,
2443 .set_wol = rtl8139_set_wol,
2444 .get_strings = rtl8139_get_strings,
2445 .get_sset_count = rtl8139_get_sset_count,
2446 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2449 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2451 struct rtl8139_private *np = netdev_priv(dev);
2454 if (!netif_running(dev))
2457 spin_lock_irq(&np->lock);
2458 rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL);
2459 spin_unlock_irq(&np->lock);
2465 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2467 struct rtl8139_private *tp = netdev_priv(dev);
2468 void __iomem *ioaddr = tp->mmio_addr;
2469 unsigned long flags;
2471 if (netif_running(dev)) {
2472 spin_lock_irqsave (&tp->lock, flags);
2473 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2474 RTL_W32 (RxMissed, 0);
2475 spin_unlock_irqrestore (&tp->lock, flags);
2481 /* Set or clear the multicast filter for this adaptor.
2482 This routine is not state sensitive and need not be SMP locked. */
2484 static void __set_rx_mode (struct net_device *dev)
2486 struct rtl8139_private *tp = netdev_priv(dev);
2487 void __iomem *ioaddr = tp->mmio_addr;
2488 u32 mc_filter[2]; /* Multicast hash filter */
2492 DPRINTK ("%s: rtl8139_set_rx_mode(%4.4x) done -- Rx config %8.8lx.\n",
2493 dev->name, dev->flags, RTL_R32 (RxConfig));
2495 /* Note: do not reorder, GCC is clever about common statements. */
2496 if (dev->flags & IFF_PROMISC) {
2498 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2500 mc_filter[1] = mc_filter[0] = 0xffffffff;
2501 } else if ((dev->mc_count > multicast_filter_limit)
2502 || (dev->flags & IFF_ALLMULTI)) {
2503 /* Too many to filter perfectly -- accept all multicasts. */
2504 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2505 mc_filter[1] = mc_filter[0] = 0xffffffff;
2507 struct dev_mc_list *mclist;
2508 rx_mode = AcceptBroadcast | AcceptMyPhys;
2509 mc_filter[1] = mc_filter[0] = 0;
2510 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2511 i++, mclist = mclist->next) {
2512 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2514 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2515 rx_mode |= AcceptMulticast;
2519 /* We can safely update without stopping the chip. */
2520 tmp = rtl8139_rx_config | rx_mode;
2521 if (tp->rx_config != tmp) {
2522 RTL_W32_F (RxConfig, tmp);
2523 tp->rx_config = tmp;
2525 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2526 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2529 static void rtl8139_set_rx_mode (struct net_device *dev)
2531 unsigned long flags;
2532 struct rtl8139_private *tp = netdev_priv(dev);
2534 spin_lock_irqsave (&tp->lock, flags);
2536 spin_unlock_irqrestore (&tp->lock, flags);
2541 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2543 struct net_device *dev = pci_get_drvdata (pdev);
2544 struct rtl8139_private *tp = netdev_priv(dev);
2545 void __iomem *ioaddr = tp->mmio_addr;
2546 unsigned long flags;
2548 pci_save_state (pdev);
2550 if (!netif_running (dev))
2553 netif_device_detach (dev);
2555 spin_lock_irqsave (&tp->lock, flags);
2557 /* Disable interrupts, stop Tx and Rx. */
2558 RTL_W16 (IntrMask, 0);
2559 RTL_W8 (ChipCmd, 0);
2561 /* Update the error counts. */
2562 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2563 RTL_W32 (RxMissed, 0);
2565 spin_unlock_irqrestore (&tp->lock, flags);
2567 pci_set_power_state (pdev, PCI_D3hot);
2573 static int rtl8139_resume (struct pci_dev *pdev)
2575 struct net_device *dev = pci_get_drvdata (pdev);
2577 pci_restore_state (pdev);
2578 if (!netif_running (dev))
2580 pci_set_power_state (pdev, PCI_D0);
2581 rtl8139_init_ring (dev);
2582 rtl8139_hw_start (dev);
2583 netif_device_attach (dev);
2587 #endif /* CONFIG_PM */
2590 static struct pci_driver rtl8139_pci_driver = {
2592 .id_table = rtl8139_pci_tbl,
2593 .probe = rtl8139_init_one,
2594 .remove = __devexit_p(rtl8139_remove_one),
2596 .suspend = rtl8139_suspend,
2597 .resume = rtl8139_resume,
2598 #endif /* CONFIG_PM */
2602 static int __init rtl8139_init_module (void)
2604 /* when we're a module, we always print a version message,
2605 * even if no 8139 board is found.
2608 printk (KERN_INFO RTL8139_DRIVER_NAME "\n");
2611 return pci_register_driver(&rtl8139_pci_driver);
2615 static void __exit rtl8139_cleanup_module (void)
2617 pci_unregister_driver (&rtl8139_pci_driver);
2621 module_init(rtl8139_init_module);
2622 module_exit(rtl8139_cleanup_module);