3 8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux.
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
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
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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt
94 #define DRV_NAME "8139too"
95 #define DRV_VERSION "0.9.28"
98 #include <linux/module.h>
99 #include <linux/kernel.h>
100 #include <linux/compiler.h>
101 #include <linux/pci.h>
102 #include <linux/init.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>
111 #include <linux/io.h>
112 #include <linux/uaccess.h>
115 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
117 /* Default Message level */
118 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
123 /* define to 1, 2 or 3 to enable copious debugging info */
124 #define RTL8139_DEBUG 0
126 /* define to 1 to disable lightweight runtime debugging checks */
127 #undef RTL8139_NDEBUG
130 #ifdef RTL8139_NDEBUG
131 # define assert(expr) do {} while (0)
133 # define assert(expr) \
134 if (unlikely(!(expr))) { \
135 pr_err("Assertion failed! %s,%s,%s,line=%d\n", \
136 #expr, __FILE__, __func__, __LINE__); \
141 /* A few user-configurable values. */
144 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
145 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
147 /* Whether to use MMIO or PIO. Default to MMIO. */
148 #ifdef CONFIG_8139TOO_PIO
149 static int use_io = 1;
151 static int use_io = 0;
154 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
155 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
156 static int multicast_filter_limit = 32;
158 /* bitmapped message enable number */
159 static int debug = -1;
163 * Warning: 64K ring has hardware issues and may lock up.
165 #if defined(CONFIG_SH_DREAMCAST)
166 #define RX_BUF_IDX 0 /* 8K ring */
168 #define RX_BUF_IDX 2 /* 32K ring */
170 #define RX_BUF_LEN (8192 << RX_BUF_IDX)
171 #define RX_BUF_PAD 16
172 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
174 #if RX_BUF_LEN == 65536
175 #define RX_BUF_TOT_LEN RX_BUF_LEN
177 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
180 /* Number of Tx descriptor registers. */
181 #define NUM_TX_DESC 4
183 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
184 #define MAX_ETH_FRAME_SIZE 1536
186 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
187 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
188 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
190 /* PCI Tuning Parameters
191 Threshold is bytes transferred to chip before transmission starts. */
192 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
194 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
195 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
196 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */
197 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
198 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */
200 /* Operational parameters that usually are not changed. */
201 /* Time in jiffies before concluding the transmitter is hung. */
202 #define TX_TIMEOUT (6*HZ)
206 HAS_MII_XCVR = 0x010000,
207 HAS_CHIP_XCVR = 0x020000,
208 HAS_LNK_CHNG = 0x040000,
211 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */
212 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */
213 #define RTL_MIN_IO_SIZE 0x80
214 #define RTL8139B_IO_SIZE 256
216 #define RTL8129_CAPS HAS_MII_XCVR
217 #define RTL8139_CAPS (HAS_CHIP_XCVR|HAS_LNK_CHNG)
225 /* indexed by board_t, above */
226 static const struct {
229 } board_info[] __devinitdata = {
230 { "RealTek RTL8139", RTL8139_CAPS },
231 { "RealTek RTL8129", RTL8129_CAPS },
235 static DEFINE_PCI_DEVICE_TABLE(rtl8139_pci_tbl) = {
236 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
237 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
238 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
239 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
240 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
241 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
242 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
243 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
244 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
245 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
246 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
247 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
248 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
249 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
250 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
251 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
252 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
253 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
254 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
256 #ifdef CONFIG_SH_SECUREEDGE5410
257 /* Bogus 8139 silicon reports 8129 without external PROM :-( */
258 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
260 #ifdef CONFIG_8139TOO_8129
261 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 },
264 /* some crazy cards report invalid vendor ids like
265 * 0x0001 here. The other ids are valid and constant,
266 * so we simply don't match on the main vendor id.
268 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 },
269 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 },
270 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 },
274 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl);
277 const char str[ETH_GSTRING_LEN];
278 } ethtool_stats_keys[] = {
282 { "rx_lost_in_ring" },
285 /* The rest of these values should never change. */
287 /* Symbolic offsets to registers. */
288 enum RTL8139_registers {
289 MAC0 = 0, /* Ethernet hardware address. */
290 MAR0 = 8, /* Multicast filter. */
291 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
292 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
301 Timer = 0x48, /* A general-purpose counter. */
302 RxMissed = 0x4C, /* 24 bits valid, write clears. */
309 Config4 = 0x5A, /* absent on RTL-8139A */
313 BasicModeCtrl = 0x62,
314 BasicModeStatus = 0x64,
317 NWayExpansion = 0x6A,
318 /* Undocumented registers, but required for proper operation. */
319 FIFOTMS = 0x70, /* FIFO Control and test. */
320 CSCR = 0x74, /* Chip Status and Configuration Register. */
322 FlashReg = 0xD4, /* Communication with Flash ROM, four bytes. */
323 PARA7c = 0x7c, /* Magic transceiver parameter register. */
324 Config5 = 0xD8, /* absent on RTL-8139A */
328 MultiIntrClear = 0xF000,
330 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
340 /* Interrupt register bits, using my own meaningful names. */
341 enum IntrStatusBits {
352 RxAckBits = RxFIFOOver | RxOverflow | RxOK,
359 TxOutOfWindow = 0x20000000,
360 TxAborted = 0x40000000,
361 TxCarrierLost = 0x80000000,
364 RxMulticast = 0x8000,
366 RxBroadcast = 0x2000,
367 RxBadSymbol = 0x0020,
375 /* Bits in RxConfig. */
379 AcceptBroadcast = 0x08,
380 AcceptMulticast = 0x04,
382 AcceptAllPhys = 0x01,
385 /* Bits in TxConfig. */
386 enum tx_config_bits {
387 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
389 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
390 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
391 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
392 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
394 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
395 TxCRC = (1 << 16), /* DISABLE Tx pkt CRC append */
396 TxClearAbt = (1 << 0), /* Clear abort (WO) */
397 TxDMAShift = 8, /* DMA burst value (0-7) is shifted X many bits */
398 TxRetryShift = 4, /* TXRR value (0-15) is shifted X many bits */
400 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
403 /* Bits in Config1 */
405 Cfg1_PM_Enable = 0x01,
406 Cfg1_VPD_Enable = 0x02,
409 LWAKE = 0x10, /* not on 8139, 8139A */
410 Cfg1_Driver_Load = 0x20,
413 SLEEP = (1 << 1), /* only on 8139, 8139A */
414 PWRDN = (1 << 0), /* only on 8139, 8139A */
417 /* Bits in Config3 */
419 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
420 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
421 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
422 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
423 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
424 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
425 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
426 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
429 /* Bits in Config4 */
431 LWPTN = (1 << 2), /* not on 8139, 8139A */
434 /* Bits in Config5 */
436 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
437 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
438 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
439 Cfg5_FIFOAddrPtr= (1 << 3), /* Realtek internal SRAM testing */
440 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
441 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
442 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
446 /* rx fifo threshold */
448 RxCfgFIFONone = (7 << RxCfgFIFOShift),
452 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
454 /* rx ring buffer length */
456 RxCfgRcv16K = (1 << 11),
457 RxCfgRcv32K = (1 << 12),
458 RxCfgRcv64K = (1 << 11) | (1 << 12),
460 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
464 /* Twister tuning parameters from RealTek.
465 Completely undocumented, but required to tune bad links on some boards. */
467 CSCR_LinkOKBit = 0x0400,
468 CSCR_LinkChangeBit = 0x0800,
469 CSCR_LinkStatusBits = 0x0f000,
470 CSCR_LinkDownOffCmd = 0x003c0,
471 CSCR_LinkDownCmd = 0x0f3c0,
476 Cfg9346_Unlock = 0xC0,
493 HasHltClk = (1 << 0),
497 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
498 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
499 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
501 /* directly indexed by chip_t, above */
502 static const struct {
504 u32 version; /* from RTL8139C/RTL8139D docs */
506 } rtl_chip_info[] = {
508 HW_REVID(1, 0, 0, 0, 0, 0, 0),
513 HW_REVID(1, 1, 0, 0, 0, 0, 0),
518 HW_REVID(1, 1, 1, 0, 0, 0, 0),
519 HasHltClk, /* XXX undocumented? */
523 HW_REVID(1, 1, 1, 0, 0, 1, 0),
524 HasHltClk, /* XXX undocumented? */
528 HW_REVID(1, 1, 1, 1, 0, 0, 0),
533 HW_REVID(1, 1, 1, 1, 1, 0, 0),
538 HW_REVID(1, 1, 1, 0, 1, 0, 0),
543 HW_REVID(1, 1, 1, 1, 0, 1, 0),
548 HW_REVID(1, 1, 1, 0, 1, 0, 1),
549 HasHltClk /* XXX undocumented? */
554 HW_REVID(1, 1, 1, 0, 1, 1, 1),
559 struct rtl_extra_stats {
560 unsigned long early_rx;
561 unsigned long tx_buf_mapped;
562 unsigned long tx_timeouts;
563 unsigned long rx_lost_in_ring;
566 struct rtl8139_private {
567 void __iomem *mmio_addr;
569 struct pci_dev *pci_dev;
571 struct napi_struct napi;
572 struct net_device *dev;
574 unsigned char *rx_ring;
575 unsigned int cur_rx; /* RX buf index of next pkt */
576 dma_addr_t rx_ring_dma;
578 unsigned int tx_flag;
579 unsigned long cur_tx;
580 unsigned long dirty_tx;
581 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
582 unsigned char *tx_bufs; /* Tx bounce buffer region. */
583 dma_addr_t tx_bufs_dma;
585 signed char phys[4]; /* MII device addresses. */
587 /* Twister tune state. */
588 char twistie, twist_row, twist_col;
590 unsigned int watchdog_fired : 1;
591 unsigned int default_port : 4; /* Last dev->if_port value. */
592 unsigned int have_thread : 1;
599 struct rtl_extra_stats xstats;
601 struct delayed_work thread;
603 struct mii_if_info mii;
604 unsigned int regs_len;
605 unsigned long fifo_copy_timeout;
609 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
610 MODULE_LICENSE("GPL");
611 MODULE_VERSION(DRV_VERSION);
613 module_param(use_io, int, 0);
614 MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO");
615 module_param(multicast_filter_limit, int, 0);
616 module_param_array(media, int, NULL, 0);
617 module_param_array(full_duplex, int, NULL, 0);
618 module_param(debug, int, 0);
619 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
620 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
621 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
622 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
624 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
625 static int rtl8139_open (struct net_device *dev);
626 static int mdio_read (struct net_device *dev, int phy_id, int location);
627 static void mdio_write (struct net_device *dev, int phy_id, int location,
629 static void rtl8139_start_thread(struct rtl8139_private *tp);
630 static void rtl8139_tx_timeout (struct net_device *dev);
631 static void rtl8139_init_ring (struct net_device *dev);
632 static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb,
633 struct net_device *dev);
634 #ifdef CONFIG_NET_POLL_CONTROLLER
635 static void rtl8139_poll_controller(struct net_device *dev);
637 static int rtl8139_set_mac_address(struct net_device *dev, void *p);
638 static int rtl8139_poll(struct napi_struct *napi, int budget);
639 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance);
640 static int rtl8139_close (struct net_device *dev);
641 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
642 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
643 static void rtl8139_set_rx_mode (struct net_device *dev);
644 static void __set_rx_mode (struct net_device *dev);
645 static void rtl8139_hw_start (struct net_device *dev);
646 static void rtl8139_thread (struct work_struct *work);
647 static void rtl8139_tx_timeout_task(struct work_struct *work);
648 static const struct ethtool_ops rtl8139_ethtool_ops;
650 /* write MMIO register, with flush */
651 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
652 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
653 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
654 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
656 /* write MMIO register */
657 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
658 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
659 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
661 /* read MMIO register */
662 #define RTL_R8(reg) ioread8 (ioaddr + (reg))
663 #define RTL_R16(reg) ioread16 (ioaddr + (reg))
664 #define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
667 static const u16 rtl8139_intr_mask =
668 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
669 TxErr | TxOK | RxErr | RxOK;
671 static const u16 rtl8139_norx_intr_mask =
672 PCIErr | PCSTimeout | RxUnderrun |
673 TxErr | TxOK | RxErr ;
676 static const unsigned int rtl8139_rx_config =
677 RxCfgRcv8K | RxNoWrap |
678 (RX_FIFO_THRESH << RxCfgFIFOShift) |
679 (RX_DMA_BURST << RxCfgDMAShift);
680 #elif RX_BUF_IDX == 1
681 static const unsigned int rtl8139_rx_config =
682 RxCfgRcv16K | RxNoWrap |
683 (RX_FIFO_THRESH << RxCfgFIFOShift) |
684 (RX_DMA_BURST << RxCfgDMAShift);
685 #elif RX_BUF_IDX == 2
686 static const unsigned int rtl8139_rx_config =
687 RxCfgRcv32K | RxNoWrap |
688 (RX_FIFO_THRESH << RxCfgFIFOShift) |
689 (RX_DMA_BURST << RxCfgDMAShift);
690 #elif RX_BUF_IDX == 3
691 static const unsigned int rtl8139_rx_config =
693 (RX_FIFO_THRESH << RxCfgFIFOShift) |
694 (RX_DMA_BURST << RxCfgDMAShift);
696 #error "Invalid configuration for 8139_RXBUF_IDX"
699 static const unsigned int rtl8139_tx_config =
700 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
702 static void __rtl8139_cleanup_dev (struct net_device *dev)
704 struct rtl8139_private *tp = netdev_priv(dev);
705 struct pci_dev *pdev;
707 assert (dev != NULL);
708 assert (tp->pci_dev != NULL);
712 pci_iounmap (pdev, tp->mmio_addr);
714 /* it's ok to call this even if we have no regions to free */
715 pci_release_regions (pdev);
718 pci_set_drvdata (pdev, NULL);
722 static void rtl8139_chip_reset (void __iomem *ioaddr)
726 /* Soft reset the chip. */
727 RTL_W8 (ChipCmd, CmdReset);
729 /* Check that the chip has finished the reset. */
730 for (i = 1000; i > 0; i--) {
732 if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
739 static __devinit struct net_device * rtl8139_init_board (struct pci_dev *pdev)
741 void __iomem *ioaddr;
742 struct net_device *dev;
743 struct rtl8139_private *tp;
745 int rc, disable_dev_on_err = 0;
747 unsigned long pio_start, pio_end, pio_flags, pio_len;
748 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
751 assert (pdev != NULL);
753 /* dev and priv zeroed in alloc_etherdev */
754 dev = alloc_etherdev (sizeof (*tp));
756 dev_err(&pdev->dev, "Unable to alloc new net device\n");
757 return ERR_PTR(-ENOMEM);
759 SET_NETDEV_DEV(dev, &pdev->dev);
761 tp = netdev_priv(dev);
764 /* enable device (incl. PCI PM wakeup and hotplug setup) */
765 rc = pci_enable_device (pdev);
769 pio_start = pci_resource_start (pdev, 0);
770 pio_end = pci_resource_end (pdev, 0);
771 pio_flags = pci_resource_flags (pdev, 0);
772 pio_len = pci_resource_len (pdev, 0);
774 mmio_start = pci_resource_start (pdev, 1);
775 mmio_end = pci_resource_end (pdev, 1);
776 mmio_flags = pci_resource_flags (pdev, 1);
777 mmio_len = pci_resource_len (pdev, 1);
779 /* set this immediately, we need to know before
780 * we talk to the chip directly */
781 pr_debug("PIO region size == 0x%02lX\n", pio_len);
782 pr_debug("MMIO region size == 0x%02lX\n", mmio_len);
786 /* make sure PCI base addr 0 is PIO */
787 if (!(pio_flags & IORESOURCE_IO)) {
788 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
792 /* check for weird/broken PCI region reporting */
793 if (pio_len < RTL_MIN_IO_SIZE) {
794 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
799 /* make sure PCI base addr 1 is MMIO */
800 if (!(mmio_flags & IORESOURCE_MEM)) {
801 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
805 if (mmio_len < RTL_MIN_IO_SIZE) {
806 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
812 rc = pci_request_regions (pdev, DRV_NAME);
815 disable_dev_on_err = 1;
817 /* enable PCI bus-mastering */
818 pci_set_master (pdev);
821 ioaddr = pci_iomap(pdev, 0, 0);
823 dev_err(&pdev->dev, "cannot map PIO, aborting\n");
827 dev->base_addr = pio_start;
828 tp->regs_len = pio_len;
830 /* ioremap MMIO region */
831 ioaddr = pci_iomap(pdev, 1, 0);
832 if (ioaddr == NULL) {
833 dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n");
834 pci_release_regions(pdev);
838 dev->base_addr = (long) ioaddr;
839 tp->regs_len = mmio_len;
841 tp->mmio_addr = ioaddr;
843 /* Bring old chips out of low-power mode. */
844 RTL_W8 (HltClk, 'R');
846 /* check for missing/broken hardware */
847 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
848 dev_err(&pdev->dev, "Chip not responding, ignoring board\n");
853 /* identify chip attached to board */
854 version = RTL_R32 (TxConfig) & HW_REVID_MASK;
855 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
856 if (version == rtl_chip_info[i].version) {
861 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
862 dev_dbg(&pdev->dev, "unknown chip version, assuming RTL-8139\n");
863 dev_dbg(&pdev->dev, "TxConfig = 0x%lx\n", RTL_R32 (TxConfig));
867 pr_debug("chipset id (%d) == index %d, '%s'\n",
868 version, i, rtl_chip_info[i].name);
870 if (tp->chipset >= CH_8139B) {
871 u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
872 pr_debug("PCI PM wakeup\n");
873 if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
876 new_tmp8 |= Cfg1_PM_Enable;
877 if (new_tmp8 != tmp8) {
878 RTL_W8 (Cfg9346, Cfg9346_Unlock);
879 RTL_W8 (Config1, tmp8);
880 RTL_W8 (Cfg9346, Cfg9346_Lock);
882 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
883 tmp8 = RTL_R8 (Config4);
885 RTL_W8 (Cfg9346, Cfg9346_Unlock);
886 RTL_W8 (Config4, tmp8 & ~LWPTN);
887 RTL_W8 (Cfg9346, Cfg9346_Lock);
891 pr_debug("Old chip wakeup\n");
892 tmp8 = RTL_R8 (Config1);
893 tmp8 &= ~(SLEEP | PWRDN);
894 RTL_W8 (Config1, tmp8);
897 rtl8139_chip_reset (ioaddr);
902 __rtl8139_cleanup_dev (dev);
903 if (disable_dev_on_err)
904 pci_disable_device (pdev);
908 static const struct net_device_ops rtl8139_netdev_ops = {
909 .ndo_open = rtl8139_open,
910 .ndo_stop = rtl8139_close,
911 .ndo_get_stats = rtl8139_get_stats,
912 .ndo_change_mtu = eth_change_mtu,
913 .ndo_validate_addr = eth_validate_addr,
914 .ndo_set_mac_address = rtl8139_set_mac_address,
915 .ndo_start_xmit = rtl8139_start_xmit,
916 .ndo_set_multicast_list = rtl8139_set_rx_mode,
917 .ndo_do_ioctl = netdev_ioctl,
918 .ndo_tx_timeout = rtl8139_tx_timeout,
919 #ifdef CONFIG_NET_POLL_CONTROLLER
920 .ndo_poll_controller = rtl8139_poll_controller,
924 static int __devinit rtl8139_init_one (struct pci_dev *pdev,
925 const struct pci_device_id *ent)
927 struct net_device *dev = NULL;
928 struct rtl8139_private *tp;
929 int i, addr_len, option;
930 void __iomem *ioaddr;
931 static int board_idx = -1;
933 assert (pdev != NULL);
934 assert (ent != NULL);
938 /* when we're built into the kernel, the driver version message
939 * is only printed if at least one 8139 board has been found
943 static int printed_version;
944 if (!printed_version++)
945 pr_info(RTL8139_DRIVER_NAME "\n");
949 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
950 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
952 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip, use 8139cp\n",
953 pdev->vendor, pdev->device, pdev->revision);
957 if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
958 pdev->device == PCI_DEVICE_ID_REALTEK_8139 &&
959 pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS &&
960 pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) {
961 pr_info("OQO Model 2 detected. Forcing PIO\n");
965 dev = rtl8139_init_board (pdev);
969 assert (dev != NULL);
970 tp = netdev_priv(dev);
973 ioaddr = tp->mmio_addr;
974 assert (ioaddr != NULL);
976 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
977 for (i = 0; i < 3; i++)
978 ((__le16 *) (dev->dev_addr))[i] =
979 cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len));
980 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
982 /* The Rtl8139-specific entries in the device structure. */
983 dev->netdev_ops = &rtl8139_netdev_ops;
984 dev->ethtool_ops = &rtl8139_ethtool_ops;
985 dev->watchdog_timeo = TX_TIMEOUT;
986 netif_napi_add(dev, &tp->napi, rtl8139_poll, 64);
988 /* note: the hardware is not capable of sg/csum/highdma, however
989 * through the use of skb_copy_and_csum_dev we enable these
992 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
994 dev->irq = pdev->irq;
996 /* tp zeroed and aligned in alloc_etherdev */
997 tp = netdev_priv(dev);
999 /* note: tp->chipset set in rtl8139_init_board */
1000 tp->drv_flags = board_info[ent->driver_data].hw_flags;
1001 tp->mmio_addr = ioaddr;
1003 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
1004 spin_lock_init (&tp->lock);
1005 spin_lock_init (&tp->rx_lock);
1006 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1008 tp->mii.mdio_read = mdio_read;
1009 tp->mii.mdio_write = mdio_write;
1010 tp->mii.phy_id_mask = 0x3f;
1011 tp->mii.reg_num_mask = 0x1f;
1013 /* dev is fully set up and ready to use now */
1014 pr_debug("about to register device named %s (%p)...\n",
1016 i = register_netdev (dev);
1017 if (i) goto err_out;
1019 pci_set_drvdata (pdev, dev);
1021 netdev_info(dev, "%s at 0x%lx, %pM, IRQ %d\n",
1022 board_info[ent->driver_data].name,
1023 dev->base_addr, dev->dev_addr, dev->irq);
1025 netdev_dbg(dev, "Identified 8139 chip type '%s'\n",
1026 rtl_chip_info[tp->chipset].name);
1028 /* Find the connected MII xcvrs.
1029 Doing this in open() would allow detecting external xcvrs later, but
1030 takes too much time. */
1031 #ifdef CONFIG_8139TOO_8129
1032 if (tp->drv_flags & HAS_MII_XCVR) {
1033 int phy, phy_idx = 0;
1034 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) {
1035 int mii_status = mdio_read(dev, phy, 1);
1036 if (mii_status != 0xffff && mii_status != 0x0000) {
1037 u16 advertising = mdio_read(dev, phy, 4);
1038 tp->phys[phy_idx++] = phy;
1039 netdev_info(dev, "MII transceiver %d status 0x%04x advertising %04x\n",
1040 phy, mii_status, advertising);
1044 netdev_info(dev, "No MII transceivers found! Assuming SYM transceiver\n");
1050 tp->mii.phy_id = tp->phys[0];
1052 /* The lower four bits are the media type. */
1053 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1055 tp->mii.full_duplex = (option & 0x210) ? 1 : 0;
1056 tp->default_port = option & 0xFF;
1057 if (tp->default_port)
1058 tp->mii.force_media = 1;
1060 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0)
1061 tp->mii.full_duplex = full_duplex[board_idx];
1062 if (tp->mii.full_duplex) {
1063 netdev_info(dev, "Media type forced to Full Duplex\n");
1064 /* Changing the MII-advertised media because might prevent
1066 tp->mii.force_media = 1;
1068 if (tp->default_port) {
1069 netdev_info(dev, " Forcing %dMbps %s-duplex operation\n",
1070 (option & 0x20 ? 100 : 10),
1071 (option & 0x10 ? "full" : "half"));
1072 mdio_write(dev, tp->phys[0], 0,
1073 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */
1074 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */
1077 /* Put the chip into low-power mode. */
1078 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1079 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
1084 __rtl8139_cleanup_dev (dev);
1085 pci_disable_device (pdev);
1090 static void __devexit rtl8139_remove_one (struct pci_dev *pdev)
1092 struct net_device *dev = pci_get_drvdata (pdev);
1094 assert (dev != NULL);
1096 flush_scheduled_work();
1098 unregister_netdev (dev);
1100 __rtl8139_cleanup_dev (dev);
1101 pci_disable_device (pdev);
1105 /* Serial EEPROM section. */
1107 /* EEPROM_Ctrl bits. */
1108 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
1109 #define EE_CS 0x08 /* EEPROM chip select. */
1110 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
1111 #define EE_WRITE_0 0x00
1112 #define EE_WRITE_1 0x02
1113 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
1114 #define EE_ENB (0x80 | EE_CS)
1116 /* Delay between EEPROM clock transitions.
1117 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
1120 #define eeprom_delay() (void)RTL_R32(Cfg9346)
1122 /* The EEPROM commands include the alway-set leading bit. */
1123 #define EE_WRITE_CMD (5)
1124 #define EE_READ_CMD (6)
1125 #define EE_ERASE_CMD (7)
1127 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len)
1130 unsigned retval = 0;
1131 int read_cmd = location | (EE_READ_CMD << addr_len);
1133 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS);
1134 RTL_W8 (Cfg9346, EE_ENB);
1137 /* Shift the read command bits out. */
1138 for (i = 4 + addr_len; i >= 0; i--) {
1139 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1140 RTL_W8 (Cfg9346, EE_ENB | dataval);
1142 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK);
1145 RTL_W8 (Cfg9346, EE_ENB);
1148 for (i = 16; i > 0; i--) {
1149 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK);
1152 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 :
1154 RTL_W8 (Cfg9346, EE_ENB);
1158 /* Terminate the EEPROM access. */
1159 RTL_W8 (Cfg9346, ~EE_CS);
1165 /* MII serial management: mostly bogus for now. */
1166 /* Read and write the MII management registers using software-generated
1167 serial MDIO protocol.
1168 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
1169 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
1170 "overclocking" issues. */
1171 #define MDIO_DIR 0x80
1172 #define MDIO_DATA_OUT 0x04
1173 #define MDIO_DATA_IN 0x02
1174 #define MDIO_CLK 0x01
1175 #define MDIO_WRITE0 (MDIO_DIR)
1176 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
1178 #define mdio_delay() RTL_R8(Config4)
1181 static const char mii_2_8139_map[8] = {
1193 #ifdef CONFIG_8139TOO_8129
1194 /* Syncronize the MII management interface by shifting 32 one bits out. */
1195 static void mdio_sync (void __iomem *ioaddr)
1199 for (i = 32; i >= 0; i--) {
1200 RTL_W8 (Config4, MDIO_WRITE1);
1202 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK);
1208 static int mdio_read (struct net_device *dev, int phy_id, int location)
1210 struct rtl8139_private *tp = netdev_priv(dev);
1212 #ifdef CONFIG_8139TOO_8129
1213 void __iomem *ioaddr = tp->mmio_addr;
1214 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1218 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1219 void __iomem *ioaddr = tp->mmio_addr;
1220 return location < 8 && mii_2_8139_map[location] ?
1221 RTL_R16 (mii_2_8139_map[location]) : 0;
1224 #ifdef CONFIG_8139TOO_8129
1226 /* Shift the read command bits out. */
1227 for (i = 15; i >= 0; i--) {
1228 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1230 RTL_W8 (Config4, MDIO_DIR | dataval);
1232 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK);
1236 /* Read the two transition, 16 data, and wire-idle bits. */
1237 for (i = 19; i > 0; i--) {
1238 RTL_W8 (Config4, 0);
1240 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0);
1241 RTL_W8 (Config4, MDIO_CLK);
1246 return (retval >> 1) & 0xffff;
1250 static void mdio_write (struct net_device *dev, int phy_id, int location,
1253 struct rtl8139_private *tp = netdev_priv(dev);
1254 #ifdef CONFIG_8139TOO_8129
1255 void __iomem *ioaddr = tp->mmio_addr;
1256 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1260 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1261 void __iomem *ioaddr = tp->mmio_addr;
1262 if (location == 0) {
1263 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1264 RTL_W16 (BasicModeCtrl, value);
1265 RTL_W8 (Cfg9346, Cfg9346_Lock);
1266 } else if (location < 8 && mii_2_8139_map[location])
1267 RTL_W16 (mii_2_8139_map[location], value);
1271 #ifdef CONFIG_8139TOO_8129
1274 /* Shift the command bits out. */
1275 for (i = 31; i >= 0; i--) {
1277 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1278 RTL_W8 (Config4, dataval);
1280 RTL_W8 (Config4, dataval | MDIO_CLK);
1283 /* Clear out extra bits. */
1284 for (i = 2; i > 0; i--) {
1285 RTL_W8 (Config4, 0);
1287 RTL_W8 (Config4, MDIO_CLK);
1294 static int rtl8139_open (struct net_device *dev)
1296 struct rtl8139_private *tp = netdev_priv(dev);
1298 void __iomem *ioaddr = tp->mmio_addr;
1300 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev);
1304 tp->tx_bufs = dma_alloc_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1305 &tp->tx_bufs_dma, GFP_KERNEL);
1306 tp->rx_ring = dma_alloc_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1307 &tp->rx_ring_dma, GFP_KERNEL);
1308 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1309 free_irq(dev->irq, dev);
1312 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
1313 tp->tx_bufs, tp->tx_bufs_dma);
1315 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
1316 tp->rx_ring, tp->rx_ring_dma);
1322 napi_enable(&tp->napi);
1324 tp->mii.full_duplex = tp->mii.force_media;
1325 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1327 rtl8139_init_ring (dev);
1328 rtl8139_hw_start (dev);
1329 netif_start_queue (dev);
1331 netif_dbg(tp, ifup, dev,
1332 "%s() ioaddr %#llx IRQ %d GP Pins %02x %s-duplex\n",
1334 (unsigned long long)pci_resource_start (tp->pci_dev, 1),
1335 dev->irq, RTL_R8 (MediaStatus),
1336 tp->mii.full_duplex ? "full" : "half");
1338 rtl8139_start_thread(tp);
1344 static void rtl_check_media (struct net_device *dev, unsigned int init_media)
1346 struct rtl8139_private *tp = netdev_priv(dev);
1348 if (tp->phys[0] >= 0) {
1349 mii_check_media(&tp->mii, netif_msg_link(tp), init_media);
1353 /* Start the hardware at open or resume. */
1354 static void rtl8139_hw_start (struct net_device *dev)
1356 struct rtl8139_private *tp = netdev_priv(dev);
1357 void __iomem *ioaddr = tp->mmio_addr;
1361 /* Bring old chips out of low-power mode. */
1362 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
1363 RTL_W8 (HltClk, 'R');
1365 rtl8139_chip_reset (ioaddr);
1367 /* unlock Config[01234] and BMCR register writes */
1368 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1369 /* Restore our idea of the MAC address. */
1370 RTL_W32_F (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
1371 RTL_W32_F (MAC0 + 4, le16_to_cpu (*(__le16 *) (dev->dev_addr + 4)));
1375 /* init Rx ring buffer DMA address */
1376 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1378 /* Must enable Tx/Rx before setting transfer thresholds! */
1379 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1381 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1382 RTL_W32 (RxConfig, tp->rx_config);
1383 RTL_W32 (TxConfig, rtl8139_tx_config);
1385 rtl_check_media (dev, 1);
1387 if (tp->chipset >= CH_8139B) {
1388 /* Disable magic packet scanning, which is enabled
1389 * when PM is enabled in Config1. It can be reenabled
1390 * via ETHTOOL_SWOL if desired. */
1391 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic);
1394 netdev_dbg(dev, "init buffer addresses\n");
1396 /* Lock Config[01234] and BMCR register writes */
1397 RTL_W8 (Cfg9346, Cfg9346_Lock);
1399 /* init Tx buffer DMA addresses */
1400 for (i = 0; i < NUM_TX_DESC; i++)
1401 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1403 RTL_W32 (RxMissed, 0);
1405 rtl8139_set_rx_mode (dev);
1407 /* no early-rx interrupts */
1408 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear);
1410 /* make sure RxTx has started */
1411 tmp = RTL_R8 (ChipCmd);
1412 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb)))
1413 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1415 /* Enable all known interrupts by setting the interrupt mask. */
1416 RTL_W16 (IntrMask, rtl8139_intr_mask);
1420 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1421 static void rtl8139_init_ring (struct net_device *dev)
1423 struct rtl8139_private *tp = netdev_priv(dev);
1430 for (i = 0; i < NUM_TX_DESC; i++)
1431 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1435 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */
1436 static int next_tick = 3 * HZ;
1438 #ifndef CONFIG_8139TOO_TUNE_TWISTER
1439 static inline void rtl8139_tune_twister (struct net_device *dev,
1440 struct rtl8139_private *tp) {}
1442 enum TwisterParamVals {
1443 PARA78_default = 0x78fa8388,
1444 PARA7c_default = 0xcb38de43, /* param[0][3] */
1445 PARA7c_xxx = 0xcb38de43,
1448 static const unsigned long param[4][4] = {
1449 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
1450 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1451 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
1452 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
1455 static void rtl8139_tune_twister (struct net_device *dev,
1456 struct rtl8139_private *tp)
1459 void __iomem *ioaddr = tp->mmio_addr;
1461 /* This is a complicated state machine to configure the "twister" for
1462 impedance/echos based on the cable length.
1463 All of this is magic and undocumented.
1465 switch (tp->twistie) {
1467 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) {
1468 /* We have link beat, let us tune the twister. */
1469 RTL_W16 (CSCR, CSCR_LinkDownOffCmd);
1470 tp->twistie = 2; /* Change to state 2. */
1471 next_tick = HZ / 10;
1473 /* Just put in some reasonable defaults for when beat returns. */
1474 RTL_W16 (CSCR, CSCR_LinkDownCmd);
1475 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */
1476 RTL_W32 (PARA78, PARA78_default);
1477 RTL_W32 (PARA7c, PARA7c_default);
1478 tp->twistie = 0; /* Bail from future actions. */
1482 /* Read how long it took to hear the echo. */
1483 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits;
1484 if (linkcase == 0x7000)
1486 else if (linkcase == 0x3000)
1488 else if (linkcase == 0x1000)
1493 tp->twistie = 3; /* Change to state 2. */
1494 next_tick = HZ / 10;
1497 /* Put out four tuning parameters, one per 100msec. */
1498 if (tp->twist_col == 0)
1499 RTL_W16 (FIFOTMS, 0);
1500 RTL_W32 (PARA7c, param[(int) tp->twist_row]
1501 [(int) tp->twist_col]);
1502 next_tick = HZ / 10;
1503 if (++tp->twist_col >= 4) {
1504 /* For short cables we are done.
1505 For long cables (row == 3) check for mistune. */
1507 (tp->twist_row == 3) ? 4 : 0;
1511 /* Special case for long cables: check for mistune. */
1512 if ((RTL_R16 (CSCR) &
1513 CSCR_LinkStatusBits) == 0x7000) {
1517 RTL_W32 (PARA7c, 0xfb38de03);
1519 next_tick = HZ / 10;
1523 /* Retune for shorter cable (column 2). */
1524 RTL_W32 (FIFOTMS, 0x20);
1525 RTL_W32 (PARA78, PARA78_default);
1526 RTL_W32 (PARA7c, PARA7c_default);
1527 RTL_W32 (FIFOTMS, 0x00);
1531 next_tick = HZ / 10;
1539 #endif /* CONFIG_8139TOO_TUNE_TWISTER */
1541 static inline void rtl8139_thread_iter (struct net_device *dev,
1542 struct rtl8139_private *tp,
1543 void __iomem *ioaddr)
1547 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1549 if (!tp->mii.force_media && mii_lpa != 0xffff) {
1550 int duplex = ((mii_lpa & LPA_100FULL) ||
1551 (mii_lpa & 0x01C0) == 0x0040);
1552 if (tp->mii.full_duplex != duplex) {
1553 tp->mii.full_duplex = duplex;
1556 netdev_info(dev, "Setting %s-duplex based on MII #%d link partner ability of %04x\n",
1557 tp->mii.full_duplex ? "full" : "half",
1558 tp->phys[0], mii_lpa);
1560 netdev_info(dev, "media is unconnected, link down, or incompatible connection\n");
1563 RTL_W8 (Cfg9346, Cfg9346_Unlock);
1564 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20);
1565 RTL_W8 (Cfg9346, Cfg9346_Lock);
1570 next_tick = HZ * 60;
1572 rtl8139_tune_twister (dev, tp);
1574 netdev_dbg(dev, "Media selection tick, Link partner %04x\n",
1576 netdev_dbg(dev, "Other registers are IntMask %04x IntStatus %04x\n",
1577 RTL_R16(IntrMask), RTL_R16(IntrStatus));
1578 netdev_dbg(dev, "Chip config %02x %02x\n",
1579 RTL_R8(Config0), RTL_R8(Config1));
1582 static void rtl8139_thread (struct work_struct *work)
1584 struct rtl8139_private *tp =
1585 container_of(work, struct rtl8139_private, thread.work);
1586 struct net_device *dev = tp->mii.dev;
1587 unsigned long thr_delay = next_tick;
1591 if (!netif_running(dev))
1594 if (tp->watchdog_fired) {
1595 tp->watchdog_fired = 0;
1596 rtl8139_tx_timeout_task(work);
1598 rtl8139_thread_iter(dev, tp, tp->mmio_addr);
1600 if (tp->have_thread)
1601 schedule_delayed_work(&tp->thread, thr_delay);
1606 static void rtl8139_start_thread(struct rtl8139_private *tp)
1609 if (tp->chipset == CH_8139_K)
1611 else if (tp->drv_flags & HAS_LNK_CHNG)
1614 tp->have_thread = 1;
1615 tp->watchdog_fired = 0;
1617 schedule_delayed_work(&tp->thread, next_tick);
1620 static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
1625 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */
1628 static void rtl8139_tx_timeout_task (struct work_struct *work)
1630 struct rtl8139_private *tp =
1631 container_of(work, struct rtl8139_private, thread.work);
1632 struct net_device *dev = tp->mii.dev;
1633 void __iomem *ioaddr = tp->mmio_addr;
1637 netdev_dbg(dev, "Transmit timeout, status %02x %04x %04x media %02x\n",
1638 RTL_R8(ChipCmd), RTL_R16(IntrStatus),
1639 RTL_R16(IntrMask), RTL_R8(MediaStatus));
1640 /* Emit info to figure out what went wrong. */
1641 netdev_dbg(dev, "Tx queue start entry %ld dirty entry %ld\n",
1642 tp->cur_tx, tp->dirty_tx);
1643 for (i = 0; i < NUM_TX_DESC; i++)
1644 netdev_dbg(dev, "Tx descriptor %d is %08lx%s\n",
1645 i, RTL_R32(TxStatus0 + (i * 4)),
1646 i == tp->dirty_tx % NUM_TX_DESC ?
1647 " (queue head)" : "");
1649 tp->xstats.tx_timeouts++;
1651 /* disable Tx ASAP, if not already */
1652 tmp8 = RTL_R8 (ChipCmd);
1653 if (tmp8 & CmdTxEnb)
1654 RTL_W8 (ChipCmd, CmdRxEnb);
1656 spin_lock_bh(&tp->rx_lock);
1657 /* Disable interrupts by clearing the interrupt mask. */
1658 RTL_W16 (IntrMask, 0x0000);
1660 /* Stop a shared interrupt from scavenging while we are. */
1661 spin_lock_irq(&tp->lock);
1662 rtl8139_tx_clear (tp);
1663 spin_unlock_irq(&tp->lock);
1665 /* ...and finally, reset everything */
1666 if (netif_running(dev)) {
1667 rtl8139_hw_start (dev);
1668 netif_wake_queue (dev);
1670 spin_unlock_bh(&tp->rx_lock);
1673 static void rtl8139_tx_timeout (struct net_device *dev)
1675 struct rtl8139_private *tp = netdev_priv(dev);
1677 tp->watchdog_fired = 1;
1678 if (!tp->have_thread) {
1679 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread);
1680 schedule_delayed_work(&tp->thread, next_tick);
1684 static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb,
1685 struct net_device *dev)
1687 struct rtl8139_private *tp = netdev_priv(dev);
1688 void __iomem *ioaddr = tp->mmio_addr;
1690 unsigned int len = skb->len;
1691 unsigned long flags;
1693 /* Calculate the next Tx descriptor entry. */
1694 entry = tp->cur_tx % NUM_TX_DESC;
1696 /* Note: the chip doesn't have auto-pad! */
1697 if (likely(len < TX_BUF_SIZE)) {
1699 memset(tp->tx_buf[entry], 0, ETH_ZLEN);
1700 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]);
1704 dev->stats.tx_dropped++;
1705 return NETDEV_TX_OK;
1708 spin_lock_irqsave(&tp->lock, flags);
1710 * Writing to TxStatus triggers a DMA transfer of the data
1711 * copied to tp->tx_buf[entry] above. Use a memory barrier
1712 * to make sure that the device sees the updated data.
1715 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)),
1716 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN));
1718 dev->trans_start = jiffies;
1722 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx)
1723 netif_stop_queue (dev);
1724 spin_unlock_irqrestore(&tp->lock, flags);
1726 netif_dbg(tp, tx_queued, dev, "Queued Tx packet size %u to slot %d\n",
1729 return NETDEV_TX_OK;
1733 static void rtl8139_tx_interrupt (struct net_device *dev,
1734 struct rtl8139_private *tp,
1735 void __iomem *ioaddr)
1737 unsigned long dirty_tx, tx_left;
1739 assert (dev != NULL);
1740 assert (ioaddr != NULL);
1742 dirty_tx = tp->dirty_tx;
1743 tx_left = tp->cur_tx - dirty_tx;
1744 while (tx_left > 0) {
1745 int entry = dirty_tx % NUM_TX_DESC;
1748 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32)));
1750 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1751 break; /* It still hasn't been Txed */
1753 /* Note: TxCarrierLost is always asserted at 100mbps. */
1754 if (txstatus & (TxOutOfWindow | TxAborted)) {
1755 /* There was an major error, log it. */
1756 netif_dbg(tp, tx_err, dev, "Transmit error, Tx status %08x\n",
1758 dev->stats.tx_errors++;
1759 if (txstatus & TxAborted) {
1760 dev->stats.tx_aborted_errors++;
1761 RTL_W32 (TxConfig, TxClearAbt);
1762 RTL_W16 (IntrStatus, TxErr);
1765 if (txstatus & TxCarrierLost)
1766 dev->stats.tx_carrier_errors++;
1767 if (txstatus & TxOutOfWindow)
1768 dev->stats.tx_window_errors++;
1770 if (txstatus & TxUnderrun) {
1771 /* Add 64 to the Tx FIFO threshold. */
1772 if (tp->tx_flag < 0x00300000)
1773 tp->tx_flag += 0x00020000;
1774 dev->stats.tx_fifo_errors++;
1776 dev->stats.collisions += (txstatus >> 24) & 15;
1777 dev->stats.tx_bytes += txstatus & 0x7ff;
1778 dev->stats.tx_packets++;
1785 #ifndef RTL8139_NDEBUG
1786 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
1787 netdev_err(dev, "Out-of-sync dirty pointer, %ld vs. %ld\n",
1788 dirty_tx, tp->cur_tx);
1789 dirty_tx += NUM_TX_DESC;
1791 #endif /* RTL8139_NDEBUG */
1793 /* only wake the queue if we did work, and the queue is stopped */
1794 if (tp->dirty_tx != dirty_tx) {
1795 tp->dirty_tx = dirty_tx;
1797 netif_wake_queue (dev);
1802 /* TODO: clean this up! Rx reset need not be this intensive */
1803 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev,
1804 struct rtl8139_private *tp, void __iomem *ioaddr)
1807 #ifdef CONFIG_8139_OLD_RX_RESET
1811 netif_dbg(tp, rx_err, dev, "Ethernet frame had errors, status %08x\n",
1813 dev->stats.rx_errors++;
1814 if (!(rx_status & RxStatusOK)) {
1815 if (rx_status & RxTooLong) {
1816 netdev_dbg(dev, "Oversized Ethernet frame, status %04x!\n",
1818 /* A.C.: The chip hangs here. */
1820 if (rx_status & (RxBadSymbol | RxBadAlign))
1821 dev->stats.rx_frame_errors++;
1822 if (rx_status & (RxRunt | RxTooLong))
1823 dev->stats.rx_length_errors++;
1824 if (rx_status & RxCRCErr)
1825 dev->stats.rx_crc_errors++;
1827 tp->xstats.rx_lost_in_ring++;
1830 #ifndef CONFIG_8139_OLD_RX_RESET
1831 tmp8 = RTL_R8 (ChipCmd);
1832 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb);
1833 RTL_W8 (ChipCmd, tmp8);
1834 RTL_W32 (RxConfig, tp->rx_config);
1837 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1839 /* disable receive */
1840 RTL_W8_F (ChipCmd, CmdTxEnb);
1842 while (--tmp_work > 0) {
1844 tmp8 = RTL_R8 (ChipCmd);
1845 if (!(tmp8 & CmdRxEnb))
1849 netdev_warn(dev, "rx stop wait too long\n");
1850 /* restart receive */
1852 while (--tmp_work > 0) {
1853 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb);
1855 tmp8 = RTL_R8 (ChipCmd);
1856 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1860 netdev_warn(dev, "tx/rx enable wait too long\n");
1862 /* and reinitialize all rx related registers */
1863 RTL_W8_F (Cfg9346, Cfg9346_Unlock);
1864 /* Must enable Tx/Rx before setting transfer thresholds! */
1865 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb);
1867 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys;
1868 RTL_W32 (RxConfig, tp->rx_config);
1871 netdev_dbg(dev, "init buffer addresses\n");
1873 /* Lock Config[01234] and BMCR register writes */
1874 RTL_W8 (Cfg9346, Cfg9346_Lock);
1876 /* init Rx ring buffer DMA address */
1877 RTL_W32_F (RxBuf, tp->rx_ring_dma);
1879 /* A.C.: Reset the multicast list. */
1880 __set_rx_mode (dev);
1885 static inline void wrap_copy(struct sk_buff *skb, const unsigned char *ring,
1886 u32 offset, unsigned int size)
1888 u32 left = RX_BUF_LEN - offset;
1891 skb_copy_to_linear_data(skb, ring + offset, left);
1892 skb_copy_to_linear_data_offset(skb, left, ring, size - left);
1894 skb_copy_to_linear_data(skb, ring + offset, size);
1898 static void rtl8139_isr_ack(struct rtl8139_private *tp)
1900 void __iomem *ioaddr = tp->mmio_addr;
1903 status = RTL_R16 (IntrStatus) & RxAckBits;
1905 /* Clear out errors and receive interrupts */
1906 if (likely(status != 0)) {
1907 if (unlikely(status & (RxFIFOOver | RxOverflow))) {
1908 tp->dev->stats.rx_errors++;
1909 if (status & RxFIFOOver)
1910 tp->dev->stats.rx_fifo_errors++;
1912 RTL_W16_F (IntrStatus, RxAckBits);
1916 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp,
1919 void __iomem *ioaddr = tp->mmio_addr;
1921 unsigned char *rx_ring = tp->rx_ring;
1922 unsigned int cur_rx = tp->cur_rx;
1923 unsigned int rx_size = 0;
1925 netdev_dbg(dev, "In %s(), current %04x BufAddr %04x, free to %04x, Cmd %02x\n",
1926 __func__, (u16)cur_rx,
1927 RTL_R16(RxBufAddr), RTL_R16(RxBufPtr), RTL_R8(ChipCmd));
1929 while (netif_running(dev) && received < budget &&
1930 (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) {
1931 u32 ring_offset = cur_rx % RX_BUF_LEN;
1933 unsigned int pkt_size;
1934 struct sk_buff *skb;
1938 /* read size+status of next frame from DMA ring buffer */
1939 rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset));
1940 rx_size = rx_status >> 16;
1941 pkt_size = rx_size - 4;
1943 netif_dbg(tp, rx_status, dev, "%s() status %04x, size %04x, cur %04x\n",
1944 __func__, rx_status, rx_size, cur_rx);
1945 #if RTL8139_DEBUG > 2
1946 print_dump_hex(KERN_DEBUG, "Frame contents: ",
1947 DUMP_PREFIX_OFFSET, 16, 1,
1948 &rx_ring[ring_offset], 70, true);
1951 /* Packet copy from FIFO still in progress.
1952 * Theoretically, this should never happen
1953 * since EarlyRx is disabled.
1955 if (unlikely(rx_size == 0xfff0)) {
1956 if (!tp->fifo_copy_timeout)
1957 tp->fifo_copy_timeout = jiffies + 2;
1958 else if (time_after(jiffies, tp->fifo_copy_timeout)) {
1959 netdev_dbg(dev, "hung FIFO. Reset\n");
1963 netif_dbg(tp, intr, dev, "fifo copy in progress\n");
1964 tp->xstats.early_rx++;
1969 tp->fifo_copy_timeout = 0;
1971 /* If Rx err or invalid rx_size/rx_status received
1972 * (which happens if we get lost in the ring),
1973 * Rx process gets reset, so we abort any further
1976 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
1978 (!(rx_status & RxStatusOK)))) {
1979 rtl8139_rx_err (rx_status, dev, tp, ioaddr);
1984 /* Malloc up new buffer, compatible with net-2e. */
1985 /* Omit the four octet CRC from the length. */
1987 skb = netdev_alloc_skb_ip_align(dev, pkt_size);
1990 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size);
1992 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
1994 skb_put (skb, pkt_size);
1996 skb->protocol = eth_type_trans (skb, dev);
1998 dev->stats.rx_bytes += pkt_size;
1999 dev->stats.rx_packets++;
2001 netif_receive_skb (skb);
2003 if (net_ratelimit())
2004 netdev_warn(dev, "Memory squeeze, dropping packet\n");
2005 dev->stats.rx_dropped++;
2009 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
2010 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16));
2012 rtl8139_isr_ack(tp);
2015 if (unlikely(!received || rx_size == 0xfff0))
2016 rtl8139_isr_ack(tp);
2018 netdev_dbg(dev, "Done %s(), current %04x BufAddr %04x, free to %04x, Cmd %02x\n",
2020 RTL_R16(RxBufAddr), RTL_R16(RxBufPtr), RTL_R8(ChipCmd));
2022 tp->cur_rx = cur_rx;
2025 * The receive buffer should be mostly empty.
2026 * Tell NAPI to reenable the Rx irq.
2028 if (tp->fifo_copy_timeout)
2036 static void rtl8139_weird_interrupt (struct net_device *dev,
2037 struct rtl8139_private *tp,
2038 void __iomem *ioaddr,
2039 int status, int link_changed)
2041 netdev_dbg(dev, "Abnormal interrupt, status %08x\n", status);
2043 assert (dev != NULL);
2044 assert (tp != NULL);
2045 assert (ioaddr != NULL);
2047 /* Update the error count. */
2048 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2049 RTL_W32 (RxMissed, 0);
2051 if ((status & RxUnderrun) && link_changed &&
2052 (tp->drv_flags & HAS_LNK_CHNG)) {
2053 rtl_check_media(dev, 0);
2054 status &= ~RxUnderrun;
2057 if (status & (RxUnderrun | RxErr))
2058 dev->stats.rx_errors++;
2060 if (status & PCSTimeout)
2061 dev->stats.rx_length_errors++;
2062 if (status & RxUnderrun)
2063 dev->stats.rx_fifo_errors++;
2064 if (status & PCIErr) {
2066 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
2067 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status);
2069 netdev_err(dev, "PCI Bus error %04x\n", pci_cmd_status);
2073 static int rtl8139_poll(struct napi_struct *napi, int budget)
2075 struct rtl8139_private *tp = container_of(napi, struct rtl8139_private, napi);
2076 struct net_device *dev = tp->dev;
2077 void __iomem *ioaddr = tp->mmio_addr;
2080 spin_lock(&tp->rx_lock);
2082 if (likely(RTL_R16(IntrStatus) & RxAckBits))
2083 work_done += rtl8139_rx(dev, tp, budget);
2085 if (work_done < budget) {
2086 unsigned long flags;
2088 * Order is important since data can get interrupted
2089 * again when we think we are done.
2091 spin_lock_irqsave(&tp->lock, flags);
2092 RTL_W16_F(IntrMask, rtl8139_intr_mask);
2093 __napi_complete(napi);
2094 spin_unlock_irqrestore(&tp->lock, flags);
2096 spin_unlock(&tp->rx_lock);
2101 /* The interrupt handler does all of the Rx thread work and cleans up
2102 after the Tx thread. */
2103 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance)
2105 struct net_device *dev = (struct net_device *) dev_instance;
2106 struct rtl8139_private *tp = netdev_priv(dev);
2107 void __iomem *ioaddr = tp->mmio_addr;
2108 u16 status, ackstat;
2109 int link_changed = 0; /* avoid bogus "uninit" warning */
2112 spin_lock (&tp->lock);
2113 status = RTL_R16 (IntrStatus);
2116 if (unlikely((status & rtl8139_intr_mask) == 0))
2121 /* h/w no longer present (hotplug?) or major error, bail */
2122 if (unlikely(status == 0xFFFF))
2125 /* close possible race's with dev_close */
2126 if (unlikely(!netif_running(dev))) {
2127 RTL_W16 (IntrMask, 0);
2131 /* Acknowledge all of the current interrupt sources ASAP, but
2132 an first get an additional status bit from CSCR. */
2133 if (unlikely(status & RxUnderrun))
2134 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit;
2136 ackstat = status & ~(RxAckBits | TxErr);
2138 RTL_W16 (IntrStatus, ackstat);
2140 /* Receive packets are processed by poll routine.
2141 If not running start it now. */
2142 if (status & RxAckBits){
2143 if (napi_schedule_prep(&tp->napi)) {
2144 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask);
2145 __napi_schedule(&tp->napi);
2149 /* Check uncommon events with one test. */
2150 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr)))
2151 rtl8139_weird_interrupt (dev, tp, ioaddr,
2152 status, link_changed);
2154 if (status & (TxOK | TxErr)) {
2155 rtl8139_tx_interrupt (dev, tp, ioaddr);
2157 RTL_W16 (IntrStatus, TxErr);
2160 spin_unlock (&tp->lock);
2162 netdev_dbg(dev, "exiting interrupt, intr_status=%#4.4x\n",
2163 RTL_R16(IntrStatus));
2164 return IRQ_RETVAL(handled);
2167 #ifdef CONFIG_NET_POLL_CONTROLLER
2169 * Polling receive - used by netconsole and other diagnostic tools
2170 * to allow network i/o with interrupts disabled.
2172 static void rtl8139_poll_controller(struct net_device *dev)
2174 disable_irq(dev->irq);
2175 rtl8139_interrupt(dev->irq, dev);
2176 enable_irq(dev->irq);
2180 static int rtl8139_set_mac_address(struct net_device *dev, void *p)
2182 struct rtl8139_private *tp = netdev_priv(dev);
2183 void __iomem *ioaddr = tp->mmio_addr;
2184 struct sockaddr *addr = p;
2186 if (!is_valid_ether_addr(addr->sa_data))
2187 return -EADDRNOTAVAIL;
2189 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
2191 spin_lock_irq(&tp->lock);
2193 RTL_W8_F(Cfg9346, Cfg9346_Unlock);
2194 RTL_W32_F(MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
2195 RTL_W32_F(MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
2196 RTL_W8_F(Cfg9346, Cfg9346_Lock);
2198 spin_unlock_irq(&tp->lock);
2203 static int rtl8139_close (struct net_device *dev)
2205 struct rtl8139_private *tp = netdev_priv(dev);
2206 void __iomem *ioaddr = tp->mmio_addr;
2207 unsigned long flags;
2209 netif_stop_queue(dev);
2210 napi_disable(&tp->napi);
2212 netif_dbg(tp, ifdown, dev, "Shutting down ethercard, status was 0x%04x\n",
2213 RTL_R16(IntrStatus));
2215 spin_lock_irqsave (&tp->lock, flags);
2217 /* Stop the chip's Tx and Rx DMA processes. */
2218 RTL_W8 (ChipCmd, 0);
2220 /* Disable interrupts by clearing the interrupt mask. */
2221 RTL_W16 (IntrMask, 0);
2223 /* Update the error counts. */
2224 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2225 RTL_W32 (RxMissed, 0);
2227 spin_unlock_irqrestore (&tp->lock, flags);
2229 free_irq (dev->irq, dev);
2231 rtl8139_tx_clear (tp);
2233 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN,
2234 tp->rx_ring, tp->rx_ring_dma);
2235 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN,
2236 tp->tx_bufs, tp->tx_bufs_dma);
2240 /* Green! Put the chip in low-power mode. */
2241 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2243 if (rtl_chip_info[tp->chipset].flags & HasHltClk)
2244 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */
2250 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to
2251 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and
2252 other threads or interrupts aren't messing with the 8139. */
2253 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2255 struct rtl8139_private *tp = netdev_priv(dev);
2256 void __iomem *ioaddr = tp->mmio_addr;
2258 spin_lock_irq(&tp->lock);
2259 if (rtl_chip_info[tp->chipset].flags & HasLWake) {
2260 u8 cfg3 = RTL_R8 (Config3);
2261 u8 cfg5 = RTL_R8 (Config5);
2263 wol->supported = WAKE_PHY | WAKE_MAGIC
2264 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
2267 if (cfg3 & Cfg3_LinkUp)
2268 wol->wolopts |= WAKE_PHY;
2269 if (cfg3 & Cfg3_Magic)
2270 wol->wolopts |= WAKE_MAGIC;
2271 /* (KON)FIXME: See how netdev_set_wol() handles the
2272 following constants. */
2273 if (cfg5 & Cfg5_UWF)
2274 wol->wolopts |= WAKE_UCAST;
2275 if (cfg5 & Cfg5_MWF)
2276 wol->wolopts |= WAKE_MCAST;
2277 if (cfg5 & Cfg5_BWF)
2278 wol->wolopts |= WAKE_BCAST;
2280 spin_unlock_irq(&tp->lock);
2284 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes
2285 that wol points to kernel memory and other threads or interrupts
2286 aren't messing with the 8139. */
2287 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2289 struct rtl8139_private *tp = netdev_priv(dev);
2290 void __iomem *ioaddr = tp->mmio_addr;
2294 support = ((rtl_chip_info[tp->chipset].flags & HasLWake)
2295 ? (WAKE_PHY | WAKE_MAGIC
2296 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)
2298 if (wol->wolopts & ~support)
2301 spin_lock_irq(&tp->lock);
2302 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic);
2303 if (wol->wolopts & WAKE_PHY)
2304 cfg3 |= Cfg3_LinkUp;
2305 if (wol->wolopts & WAKE_MAGIC)
2307 RTL_W8 (Cfg9346, Cfg9346_Unlock);
2308 RTL_W8 (Config3, cfg3);
2309 RTL_W8 (Cfg9346, Cfg9346_Lock);
2311 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF);
2312 /* (KON)FIXME: These are untested. We may have to set the
2313 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no
2315 if (wol->wolopts & WAKE_UCAST)
2317 if (wol->wolopts & WAKE_MCAST)
2319 if (wol->wolopts & WAKE_BCAST)
2321 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */
2322 spin_unlock_irq(&tp->lock);
2327 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2329 struct rtl8139_private *tp = netdev_priv(dev);
2330 strcpy(info->driver, DRV_NAME);
2331 strcpy(info->version, DRV_VERSION);
2332 strcpy(info->bus_info, pci_name(tp->pci_dev));
2333 info->regdump_len = tp->regs_len;
2336 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2338 struct rtl8139_private *tp = netdev_priv(dev);
2339 spin_lock_irq(&tp->lock);
2340 mii_ethtool_gset(&tp->mii, cmd);
2341 spin_unlock_irq(&tp->lock);
2345 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2347 struct rtl8139_private *tp = netdev_priv(dev);
2349 spin_lock_irq(&tp->lock);
2350 rc = mii_ethtool_sset(&tp->mii, cmd);
2351 spin_unlock_irq(&tp->lock);
2355 static int rtl8139_nway_reset(struct net_device *dev)
2357 struct rtl8139_private *tp = netdev_priv(dev);
2358 return mii_nway_restart(&tp->mii);
2361 static u32 rtl8139_get_link(struct net_device *dev)
2363 struct rtl8139_private *tp = netdev_priv(dev);
2364 return mii_link_ok(&tp->mii);
2367 static u32 rtl8139_get_msglevel(struct net_device *dev)
2369 struct rtl8139_private *tp = netdev_priv(dev);
2370 return tp->msg_enable;
2373 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
2375 struct rtl8139_private *tp = netdev_priv(dev);
2376 tp->msg_enable = datum;
2379 static int rtl8139_get_regs_len(struct net_device *dev)
2381 struct rtl8139_private *tp;
2382 /* TODO: we are too slack to do reg dumping for pio, for now */
2385 tp = netdev_priv(dev);
2386 return tp->regs_len;
2389 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
2391 struct rtl8139_private *tp;
2393 /* TODO: we are too slack to do reg dumping for pio, for now */
2396 tp = netdev_priv(dev);
2398 regs->version = RTL_REGS_VER;
2400 spin_lock_irq(&tp->lock);
2401 memcpy_fromio(regbuf, tp->mmio_addr, regs->len);
2402 spin_unlock_irq(&tp->lock);
2405 static int rtl8139_get_sset_count(struct net_device *dev, int sset)
2409 return RTL_NUM_STATS;
2415 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
2417 struct rtl8139_private *tp = netdev_priv(dev);
2419 data[0] = tp->xstats.early_rx;
2420 data[1] = tp->xstats.tx_buf_mapped;
2421 data[2] = tp->xstats.tx_timeouts;
2422 data[3] = tp->xstats.rx_lost_in_ring;
2425 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2427 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
2430 static const struct ethtool_ops rtl8139_ethtool_ops = {
2431 .get_drvinfo = rtl8139_get_drvinfo,
2432 .get_settings = rtl8139_get_settings,
2433 .set_settings = rtl8139_set_settings,
2434 .get_regs_len = rtl8139_get_regs_len,
2435 .get_regs = rtl8139_get_regs,
2436 .nway_reset = rtl8139_nway_reset,
2437 .get_link = rtl8139_get_link,
2438 .get_msglevel = rtl8139_get_msglevel,
2439 .set_msglevel = rtl8139_set_msglevel,
2440 .get_wol = rtl8139_get_wol,
2441 .set_wol = rtl8139_set_wol,
2442 .get_strings = rtl8139_get_strings,
2443 .get_sset_count = rtl8139_get_sset_count,
2444 .get_ethtool_stats = rtl8139_get_ethtool_stats,
2447 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2449 struct rtl8139_private *tp = netdev_priv(dev);
2452 if (!netif_running(dev))
2455 spin_lock_irq(&tp->lock);
2456 rc = generic_mii_ioctl(&tp->mii, if_mii(rq), cmd, NULL);
2457 spin_unlock_irq(&tp->lock);
2463 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev)
2465 struct rtl8139_private *tp = netdev_priv(dev);
2466 void __iomem *ioaddr = tp->mmio_addr;
2467 unsigned long flags;
2469 if (netif_running(dev)) {
2470 spin_lock_irqsave (&tp->lock, flags);
2471 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2472 RTL_W32 (RxMissed, 0);
2473 spin_unlock_irqrestore (&tp->lock, flags);
2479 /* Set or clear the multicast filter for this adaptor.
2480 This routine is not state sensitive and need not be SMP locked. */
2482 static void __set_rx_mode (struct net_device *dev)
2484 struct rtl8139_private *tp = netdev_priv(dev);
2485 void __iomem *ioaddr = tp->mmio_addr;
2486 u32 mc_filter[2]; /* Multicast hash filter */
2490 netdev_dbg(dev, "rtl8139_set_rx_mode(%04x) done -- Rx config %08lx\n",
2491 dev->flags, RTL_R32(RxConfig));
2493 /* Note: do not reorder, GCC is clever about common statements. */
2494 if (dev->flags & IFF_PROMISC) {
2496 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2498 mc_filter[1] = mc_filter[0] = 0xffffffff;
2499 } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
2500 (dev->flags & IFF_ALLMULTI)) {
2501 /* Too many to filter perfectly -- accept all multicasts. */
2502 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2503 mc_filter[1] = mc_filter[0] = 0xffffffff;
2505 struct dev_mc_list *mclist;
2506 rx_mode = AcceptBroadcast | AcceptMyPhys;
2507 mc_filter[1] = mc_filter[0] = 0;
2508 netdev_for_each_mc_addr(mclist, dev) {
2509 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2511 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2512 rx_mode |= AcceptMulticast;
2516 /* We can safely update without stopping the chip. */
2517 tmp = rtl8139_rx_config | rx_mode;
2518 if (tp->rx_config != tmp) {
2519 RTL_W32_F (RxConfig, tmp);
2520 tp->rx_config = tmp;
2522 RTL_W32_F (MAR0 + 0, mc_filter[0]);
2523 RTL_W32_F (MAR0 + 4, mc_filter[1]);
2526 static void rtl8139_set_rx_mode (struct net_device *dev)
2528 unsigned long flags;
2529 struct rtl8139_private *tp = netdev_priv(dev);
2531 spin_lock_irqsave (&tp->lock, flags);
2533 spin_unlock_irqrestore (&tp->lock, flags);
2538 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state)
2540 struct net_device *dev = pci_get_drvdata (pdev);
2541 struct rtl8139_private *tp = netdev_priv(dev);
2542 void __iomem *ioaddr = tp->mmio_addr;
2543 unsigned long flags;
2545 pci_save_state (pdev);
2547 if (!netif_running (dev))
2550 netif_device_detach (dev);
2552 spin_lock_irqsave (&tp->lock, flags);
2554 /* Disable interrupts, stop Tx and Rx. */
2555 RTL_W16 (IntrMask, 0);
2556 RTL_W8 (ChipCmd, 0);
2558 /* Update the error counts. */
2559 dev->stats.rx_missed_errors += RTL_R32 (RxMissed);
2560 RTL_W32 (RxMissed, 0);
2562 spin_unlock_irqrestore (&tp->lock, flags);
2564 pci_set_power_state (pdev, PCI_D3hot);
2570 static int rtl8139_resume (struct pci_dev *pdev)
2572 struct net_device *dev = pci_get_drvdata (pdev);
2574 pci_restore_state (pdev);
2575 if (!netif_running (dev))
2577 pci_set_power_state (pdev, PCI_D0);
2578 rtl8139_init_ring (dev);
2579 rtl8139_hw_start (dev);
2580 netif_device_attach (dev);
2584 #endif /* CONFIG_PM */
2587 static struct pci_driver rtl8139_pci_driver = {
2589 .id_table = rtl8139_pci_tbl,
2590 .probe = rtl8139_init_one,
2591 .remove = __devexit_p(rtl8139_remove_one),
2593 .suspend = rtl8139_suspend,
2594 .resume = rtl8139_resume,
2595 #endif /* CONFIG_PM */
2599 static int __init rtl8139_init_module (void)
2601 /* when we're a module, we always print a version message,
2602 * even if no 8139 board is found.
2605 pr_info(RTL8139_DRIVER_NAME "\n");
2608 return pci_register_driver(&rtl8139_pci_driver);
2612 static void __exit rtl8139_cleanup_module (void)
2614 pci_unregister_driver (&rtl8139_pci_driver);
2618 module_init(rtl8139_init_module);
2619 module_exit(rtl8139_cleanup_module);