3 drivers/net/pci-skeleton.c
5 Maintained by Jeff Garzik <jgarzik@pobox.com>
7 Original code came from 8139too.c, which in turns was based
8 originally on Donald Becker's rtl8139.c driver, versions 1.11
9 and older. This driver was originally based on rtl8139.c
10 version 1.07. Header of rtl8139.c version 1.11:
14 Written 1997-2000 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.
42 -----------------------------------------------------------------------------
46 I. Board Compatibility
48 This device driver is designed for the RealTek RTL8139 series, the RealTek
49 Fast Ethernet controllers for PCI and CardBus. This chip is used on many
50 low-end boards, sometimes with its markings changed.
53 II. Board-specific settings
55 PCI bus devices are configured by the system at boot time, so no jumpers
56 need to be set on the board. The system BIOS will assign the
57 PCI INTA signal to a (preferably otherwise unused) system IRQ line.
63 The receive unit uses a single linear ring buffer rather than the more
64 common (and more efficient) descriptor-based architecture. Incoming frames
65 are sequentially stored into the Rx region, and the host copies them into
68 Comment: While it is theoretically possible to process many frames in place,
69 any delay in Rx processing would cause us to drop frames. More importantly,
70 the Linux protocol stack is not designed to operate in this manner.
74 The RTL8139 uses a fixed set of four Tx descriptors in register space.
75 In a stunningly bad design choice, Tx frames must be 32 bit aligned. Linux
76 aligns the IP header on word boundaries, and 14 byte ethernet header means
77 that almost all frames will need to be copied to an alignment buffer.
81 http://www.realtek.com.tw/cn/cn.html
82 http://www.scyld.com/expert/NWay.html
88 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
90 #include <linux/module.h>
91 #include <linux/kernel.h>
92 #include <linux/pci.h>
93 #include <linux/init.h>
94 #include <linux/ioport.h>
95 #include <linux/netdevice.h>
96 #include <linux/etherdevice.h>
97 #include <linux/delay.h>
98 #include <linux/ethtool.h>
99 #include <linux/mii.h>
100 #include <linux/crc32.h>
101 #include <linux/io.h>
103 #define NETDRV_VERSION "1.0.1"
104 #define MODNAME "netdrv"
105 #define NETDRV_DRIVER_LOAD_MSG "MyVendor Fast Ethernet driver " NETDRV_VERSION " loaded"
107 static char version[] __devinitdata =
108 KERN_INFO NETDRV_DRIVER_LOAD_MSG "\n"
109 " Support available from http://foo.com/bar/baz.html\n";
111 /* define to 1 to enable PIO instead of MMIO */
114 /* define to 1 to enable copious debugging info */
117 /* define to 1 to disable lightweight runtime debugging checks */
122 /* note: prints function name for you */
123 #define DPRINTK(fmt, args...) \
124 printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
126 #define DPRINTK(fmt, args...) \
129 printk(KERN_DEBUG fmt, ##args); \
134 #define assert(expr) do {} while (0)
136 #define assert(expr) \
138 printk("Assertion failed! %s,%s,%s,line=%d\n", \
139 #expr, __FILE__, __func__, __LINE__); \
144 /* A few user-configurable values. */
146 static int media[] = {-1, -1, -1, -1, -1, -1, -1, -1};
148 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
149 static int max_interrupt_work = 20;
151 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
152 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
153 static int multicast_filter_limit = 32;
155 /* Size of the in-memory receive ring. */
156 #define RX_BUF_LEN_IDX 2 /* 0==8K, 1==16K, 2==32K, 3==64K */
157 #define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX)
158 #define RX_BUF_PAD 16
159 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
160 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
162 /* Number of Tx descriptor registers. */
163 #define NUM_TX_DESC 4
165 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
166 #define MAX_ETH_FRAME_SIZE 1536
168 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
169 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
170 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
172 /* PCI Tuning Parameters
173 Threshold is bytes transferred to chip before transmission starts. */
174 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
176 /* The following settings are log_2(bytes)-4:
177 0==16 bytes 1==32 2==64 3==128 4==256 5==512 6==1024 7==end of packet.
179 #define RX_FIFO_THRESH 6 /* Rx buffer level before first PCI xfer. */
180 #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
181 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
184 /* Operational parameters that usually are not changed. */
185 /* Time in jiffies before concluding the transmitter is hung. */
186 #define TX_TIMEOUT (6 * HZ)
189 HAS_CHIP_XCVR = 0x020000,
190 HAS_LNK_CHNG = 0x040000,
193 #define NETDRV_MIN_IO_SIZE 0x80
194 #define RTL8139B_IO_SIZE 256
196 #define NETDRV_CAPS (HAS_CHIP_XCVR | HAS_LNK_CHNG)
208 /* indexed by board_t, above */
211 } board_info[] __devinitdata = {
212 { "RealTek RTL8139 Fast Ethernet" },
213 { "RealTek RTL8139B PCI/CardBus" },
214 { "SMC1211TX EZCard 10/100 (RealTek RTL8139)" },
215 /* { MPX5030, "Accton MPX5030 (RealTek RTL8139)" },*/
216 { "Delta Electronics 8139 10/100BaseTX" },
217 { "Addtron Technolgy 8139 10/100BaseTX" },
221 static DEFINE_PCI_DEVICE_TABLE(netdrv_pci_tbl) = {
222 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
223 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, NETDRV_CB },
224 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SMC1211TX },
225 /* {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MPX5030 },*/
226 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DELTA8139 },
227 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ADDTRON8139 },
230 MODULE_DEVICE_TABLE(pci, netdrv_pci_tbl);
233 /* The rest of these values should never change. */
235 /* Symbolic offsets to registers. */
236 enum NETDRV_registers {
237 MAC0 = 0, /* Ethernet hardware address. */
238 MAR0 = 8, /* Multicast filter. */
239 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
240 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
243 RxEarlyStatus = 0x36,
252 Timer = 0x48, /* A general-purpose counter. */
253 RxMissed = 0x4C, /* 24 bits valid, write clears. */
260 Config4 = 0x5A, /* absent on RTL-8139A */
264 BasicModeCtrl = 0x62,
265 BasicModeStatus = 0x64,
268 NWayExpansion = 0x6A,
269 /* Undocumented registers, but required for proper operation. */
270 FIFOTMS = 0x70, /* FIFO Control and test. */
271 CSCR = 0x74, /* Chip Status and Configuration Register. */
273 PARA7c = 0x7c, /* Magic transceiver parameter register. */
274 Config5 = 0xD8, /* absent on RTL-8139A */
278 MultiIntrClear = 0xF000,
280 Config1Clear = (1 << 7) | (1 << 6) | (1 << 3) | (1 << 2) | (1 << 1),
290 /* Interrupt register bits, using my own meaningful names. */
291 enum IntrStatusBits {
306 TxOutOfWindow = 0x20000000,
307 TxAborted = 0x40000000,
308 TxCarrierLost = 0x80000000,
311 RxMulticast = 0x8000,
313 RxBroadcast = 0x2000,
314 RxBadSymbol = 0x0020,
322 /* Bits in RxConfig. */
326 AcceptBroadcast = 0x08,
327 AcceptMulticast = 0x04,
329 AcceptAllPhys = 0x01,
332 /* Bits in TxConfig. */
333 enum tx_config_bits {
334 TxIFG1 = (1 << 25), /* Interframe Gap Time */
335 TxIFG0 = (1 << 24), /* Enabling these bits violates IEEE 802.3 */
336 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
337 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
338 TxClearAbt = (1 << 0), /* Clear abort (WO) */
339 TxDMAShift = 8, /* DMA burst value(0-7) is shift this many bits */
341 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
344 /* Bits in Config1 */
346 Cfg1_PM_Enable = 0x01,
347 Cfg1_VPD_Enable = 0x02,
351 Cfg1_Driver_Load = 0x20,
357 /* Early Rx threshold, none or X/16 */
358 RxCfgEarlyRxNone = 0,
359 RxCfgEarlyRxShift = 24,
361 /* rx fifo threshold */
363 RxCfgFIFONone = (7 << RxCfgFIFOShift),
367 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
369 /* rx ring buffer length */
371 RxCfgRcv16K = (1 << 11),
372 RxCfgRcv32K = (1 << 12),
373 RxCfgRcv64K = (1 << 11) | (1 << 12),
375 /* Disable packet wrap at end of Rx buffer */
380 /* Twister tuning parameters from RealTek.
381 Completely undocumented, but required to tune bad links. */
383 CSCR_LinkOKBit = 0x0400,
384 CSCR_LinkChangeBit = 0x0800,
385 CSCR_LinkStatusBits = 0x0f000,
386 CSCR_LinkDownOffCmd = 0x003c0,
387 CSCR_LinkDownCmd = 0x0f3c0,
393 Cfg9346_Unlock = 0xC0,
397 #define PARA78_default 0x78fa8388
398 #define PARA7c_default 0xcb38de43 /* param[0][3] */
399 #define PARA7c_xxx 0xcb38de43
400 static const unsigned long param[4][4] = {
401 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
402 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
403 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
404 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
423 /* directly indexed by chip_t, above */
424 static const struct {
426 u8 version; /* from RTL8139C docs */
427 u32 RxConfigMask; /* should clear the bits supported by this chip */
428 } rtl_chip_info[] = {
431 0xf0fe0040, /* XXX copied from RTL8139A, verify */
451 0xf0fe0040, /* XXX copied from RTL8139A, verify */
456 0xf0fc0040, /* XXX copied from RTL8139B, verify */
462 struct netdrv_private {
466 struct pci_dev *pci_dev;
467 struct timer_list timer; /* Media selection timer. */
468 unsigned char *rx_ring;
469 unsigned int cur_rx; /* Index into the Rx buffer of next Rx pkt. */
470 unsigned int tx_flag;
473 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
474 struct ring_info tx_info[NUM_TX_DESC];
475 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
476 unsigned char *tx_bufs; /* Tx bounce buffer region. */
477 dma_addr_t rx_ring_dma;
478 dma_addr_t tx_bufs_dma;
479 char phys[4]; /* MII device addresses. */
480 char twistie, twist_row, twist_col; /* Twister tune state. */
481 unsigned int full_duplex:1; /* Full-duplex operation requested. */
482 unsigned int duplex_lock:1;
483 unsigned int default_port:4; /* Last dev->if_port value. */
484 unsigned int media2:4; /* Secondary monitored media port. */
485 unsigned int medialock:1; /* Don't sense media type. */
486 unsigned int mediasense:1; /* Media sensing in progress. */
491 MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
492 MODULE_DESCRIPTION("Skeleton for a PCI Fast Ethernet driver");
493 MODULE_LICENSE("GPL");
494 module_param(multicast_filter_limit, int, 0);
495 module_param(max_interrupt_work, int, 0);
496 module_param_array(media, int, NULL, 0);
497 MODULE_PARM_DESC(multicast_filter_limit,
498 MODNAME " maximum number of filtered multicast addresses");
499 MODULE_PARM_DESC(max_interrupt_work,
500 MODNAME " maximum events handled per interrupt");
501 MODULE_PARM_DESC(media,
502 MODNAME " Bits 0-3: media type, bit 17: full duplex");
504 static int read_eeprom(void *ioaddr, int location, int addr_len);
505 static int netdrv_open(struct net_device *dev);
506 static int mdio_read(struct net_device *dev, int phy_id, int location);
507 static void mdio_write(struct net_device *dev, int phy_id, int location,
509 static void netdrv_timer(unsigned long data);
510 static void netdrv_tx_timeout(struct net_device *dev);
511 static void netdrv_init_ring(struct net_device *dev);
512 static int netdrv_start_xmit(struct sk_buff *skb,
513 struct net_device *dev);
514 static irqreturn_t netdrv_interrupt(int irq, void *dev_instance);
515 static int netdrv_close(struct net_device *dev);
516 static int netdrv_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
517 static void netdrv_set_rx_mode(struct net_device *dev);
518 static void netdrv_hw_start(struct net_device *dev);
523 #define NETDRV_R8(reg) inb(((unsigned long)ioaddr) + (reg))
524 #define NETDRV_R16(reg) inw(((unsigned long)ioaddr) + (reg))
525 #define NETDRV_R32(reg) ((unsigned long)inl(((unsigned long)ioaddr) + (reg)))
526 #define NETDRV_W8(reg, val8) outb((val8), ((unsigned long)ioaddr) + (reg))
527 #define NETDRV_W16(reg, val16) outw((val16), ((unsigned long)ioaddr) + (reg))
528 #define NETDRV_W32(reg, val32) outl((val32), ((unsigned long)ioaddr) + (reg))
529 #define NETDRV_W8_F NETDRV_W8
530 #define NETDRV_W16_F NETDRV_W16
531 #define NETDRV_W32_F NETDRV_W32
538 #define readb(addr) inb((unsigned long)(addr))
539 #define readw(addr) inw((unsigned long)(addr))
540 #define readl(addr) inl((unsigned long)(addr))
541 #define writeb(val, addr) outb((val), (unsigned long)(addr))
542 #define writew(val, addr) outw((val), (unsigned long)(addr))
543 #define writel(val, addr) outl((val), (unsigned long)(addr))
547 /* write MMIO register, with flush */
548 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
549 #define NETDRV_W8_F(reg, val8) \
551 writeb((val8), ioaddr + (reg)); \
552 readb(ioaddr + (reg)); \
554 #define NETDRV_W16_F(reg, val16) \
556 writew((val16), ioaddr + (reg)); \
557 readw(ioaddr + (reg)); \
559 #define NETDRV_W32_F(reg, val32) \
561 writel((val32), ioaddr + (reg)); \
562 readl(ioaddr + (reg)); \
566 #ifdef MMIO_FLUSH_AUDIT_COMPLETE
568 /* write MMIO register */
569 #define NETDRV_W8(reg, val8) writeb((val8), ioaddr + (reg))
570 #define NETDRV_W16(reg, val16) writew((val16), ioaddr + (reg))
571 #define NETDRV_W32(reg, val32) writel((val32), ioaddr + (reg))
575 /* write MMIO register, then flush */
576 #define NETDRV_W8 NETDRV_W8_F
577 #define NETDRV_W16 NETDRV_W16_F
578 #define NETDRV_W32 NETDRV_W32_F
580 #endif /* MMIO_FLUSH_AUDIT_COMPLETE */
582 /* read MMIO register */
583 #define NETDRV_R8(reg) readb(ioaddr + (reg))
584 #define NETDRV_R16(reg) readw(ioaddr + (reg))
585 #define NETDRV_R32(reg) ((unsigned long) readl(ioaddr + (reg)))
587 #endif /* USE_IO_OPS */
590 static const u16 netdrv_intr_mask =
591 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
592 TxErr | TxOK | RxErr | RxOK;
594 static const unsigned int netdrv_rx_config =
595 RxCfgEarlyRxNone | RxCfgRcv32K | RxNoWrap |
596 (RX_FIFO_THRESH << RxCfgFIFOShift) |
597 (RX_DMA_BURST << RxCfgDMAShift);
600 static int __devinit netdrv_init_board(struct pci_dev *pdev,
601 struct net_device **dev_out,
605 struct net_device *dev;
606 struct netdrv_private *tp;
608 u32 pio_start, pio_end, pio_flags, pio_len;
609 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
614 assert(pdev != NULL);
615 assert(ioaddr_out != NULL);
620 /* dev zeroed in alloc_etherdev */
621 dev = alloc_etherdev(sizeof(*tp));
623 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
624 DPRINTK("EXIT, returning -ENOMEM\n");
627 SET_NETDEV_DEV(dev, &pdev->dev);
628 tp = netdev_priv(dev);
630 /* enable device(incl. PCI PM wakeup), and bus-mastering */
631 rc = pci_enable_device(pdev);
635 pio_start = pci_resource_start(pdev, 0);
636 pio_end = pci_resource_end(pdev, 0);
637 pio_flags = pci_resource_flags(pdev, 0);
638 pio_len = pci_resource_len(pdev, 0);
640 mmio_start = pci_resource_start(pdev, 1);
641 mmio_end = pci_resource_end(pdev, 1);
642 mmio_flags = pci_resource_flags(pdev, 1);
643 mmio_len = pci_resource_len(pdev, 1);
645 /* set this immediately, we need to know before
646 * we talk to the chip directly */
647 DPRINTK("PIO region size == %#02X\n", pio_len);
648 DPRINTK("MMIO region size == %#02lX\n", mmio_len);
650 /* make sure PCI base addr 0 is PIO */
651 if (!(pio_flags & IORESOURCE_IO)) {
652 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
657 /* make sure PCI base addr 1 is MMIO */
658 if (!(mmio_flags & IORESOURCE_MEM)) {
659 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
664 /* check for weird/broken PCI region reporting */
665 if ((pio_len < NETDRV_MIN_IO_SIZE) ||
666 (mmio_len < NETDRV_MIN_IO_SIZE)) {
667 dev_err(&pdev->dev, "Invalid PCI region size(s), aborting\n");
672 rc = pci_request_regions(pdev, MODNAME);
676 pci_set_master(pdev);
679 ioaddr = (void *)pio_start;
681 /* ioremap MMIO region */
682 ioaddr = ioremap(mmio_start, mmio_len);
683 if (ioaddr == NULL) {
684 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
686 goto err_out_free_res;
688 #endif /* USE_IO_OPS */
690 /* Soft reset the chip. */
691 NETDRV_W8(ChipCmd, (NETDRV_R8(ChipCmd) & ChipCmdClear) | CmdReset);
693 /* Check that the chip has finished the reset. */
694 for (i = 1000; i > 0; i--)
695 if ((NETDRV_R8(ChipCmd) & CmdReset) == 0)
700 /* Bring the chip out of low-power mode. */
701 /* <insert device-specific code here> */
704 /* sanity checks -- ensure PIO and MMIO registers agree */
705 assert(inb(pio_start+Config0) == readb(ioaddr+Config0));
706 assert(inb(pio_start+Config1) == readb(ioaddr+Config1));
707 assert(inb(pio_start+TxConfig) == readb(ioaddr+TxConfig));
708 assert(inb(pio_start+RxConfig) == readb(ioaddr+RxConfig));
709 #endif /* !USE_IO_OPS */
711 /* identify chip attached to board */
712 tmp = NETDRV_R8(ChipVersion);
713 for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--)
714 if (tmp == rtl_chip_info[i].version) {
719 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
720 dev_printk(KERN_DEBUG, &pdev->dev,
721 "unknown chip version, assuming RTL-8139\n");
722 dev_printk(KERN_DEBUG, &pdev->dev, "TxConfig = %#lx\n",
723 NETDRV_R32(TxConfig));
727 DPRINTK("chipset id(%d) == index %d, '%s'\n",
728 tmp, tp->chipset, rtl_chip_info[tp->chipset].name);
730 rc = register_netdev(dev);
734 DPRINTK("EXIT, returning 0\n");
735 *ioaddr_out = ioaddr;
744 pci_release_regions(pdev);
747 DPRINTK("EXIT, returning %d\n", rc);
751 static const struct net_device_ops netdrv_netdev_ops = {
752 .ndo_open = netdrv_open,
753 .ndo_stop = netdrv_close,
754 .ndo_start_xmit = netdrv_start_xmit,
755 .ndo_set_multicast_list = netdrv_set_rx_mode,
756 .ndo_do_ioctl = netdrv_ioctl,
757 .ndo_tx_timeout = netdrv_tx_timeout,
758 .ndo_change_mtu = eth_change_mtu,
759 .ndo_validate_addr = eth_validate_addr,
760 .ndo_set_mac_address = eth_mac_addr,
763 static int __devinit netdrv_init_one(struct pci_dev *pdev,
764 const struct pci_device_id *ent)
766 struct net_device *dev = NULL;
767 struct netdrv_private *tp;
768 int i, addr_len, option;
770 static int board_idx = -1;
772 /* when built into the kernel, we only print version if device is found */
774 static int printed_version;
775 if (!printed_version++)
781 assert(pdev != NULL);
786 i = netdrv_init_board(pdev, &dev, &ioaddr);
788 DPRINTK("EXIT, returning %d\n", i);
792 tp = netdev_priv(dev);
794 assert(ioaddr != NULL);
798 addr_len = read_eeprom(ioaddr, 0, 8) == 0x8129 ? 8 : 6;
799 for (i = 0; i < 3; i++)
800 ((u16 *)(dev->dev_addr))[i] =
801 le16_to_cpu(read_eeprom(ioaddr, i + 7, addr_len));
803 dev->netdev_ops = &netdrv_netdev_ops;
804 dev->watchdog_timeo = TX_TIMEOUT;
806 dev->irq = pdev->irq;
807 dev->base_addr = (unsigned long) ioaddr;
809 /* netdev_priv()/tp zeroed and aligned in alloc_etherdev */
810 tp = netdev_priv(dev);
812 /* note: tp->chipset set in netdrv_init_board */
813 tp->drv_flags = PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
814 PCI_COMMAND_MASTER | NETDRV_CAPS;
816 tp->board = ent->driver_data;
817 tp->mmio_addr = ioaddr;
818 spin_lock_init(&tp->lock);
820 pci_set_drvdata(pdev, dev);
824 netdev_info(dev, "%s at %#lx, %pM IRQ %d\n",
825 board_info[ent->driver_data].name,
826 dev->base_addr, dev->dev_addr, dev->irq);
828 netdev_printk(KERN_DEBUG, dev, "Identified 8139 chip type '%s'\n",
829 rtl_chip_info[tp->chipset].name);
831 /* Put the chip into low-power mode. */
832 NETDRV_W8_F(Cfg9346, Cfg9346_Unlock);
834 /* The lower four bits are the media type. */
835 option = (board_idx > 7) ? 0 : media[board_idx];
837 tp->full_duplex = (option & 0x200) ? 1 : 0;
838 tp->default_port = option & 15;
839 if (tp->default_port)
843 if (tp->full_duplex) {
844 netdev_info(dev, "Media type forced to Full Duplex\n");
845 mdio_write(dev, tp->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
849 DPRINTK("EXIT - returning 0\n");
854 static void __devexit netdrv_remove_one(struct pci_dev *pdev)
856 struct net_device *dev = pci_get_drvdata(pdev);
857 struct netdrv_private *np;
863 np = netdev_priv(dev);
866 unregister_netdev(dev);
869 iounmap(np->mmio_addr);
870 #endif /* !USE_IO_OPS */
872 pci_release_regions(pdev);
876 pci_set_drvdata(pdev, NULL);
878 pci_disable_device(pdev);
884 /* Serial EEPROM section. */
886 /* EEPROM_Ctrl bits. */
887 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
888 #define EE_CS 0x08 /* EEPROM chip select. */
889 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
890 #define EE_WRITE_0 0x00
891 #define EE_WRITE_1 0x02
892 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
893 #define EE_ENB (0x80 | EE_CS)
895 /* Delay between EEPROM clock transitions.
896 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
899 #define eeprom_delay() readl(ee_addr)
901 /* The EEPROM commands include the alway-set leading bit. */
902 #define EE_WRITE_CMD (5)
903 #define EE_READ_CMD (6)
904 #define EE_ERASE_CMD (7)
906 static int __devinit read_eeprom(void *ioaddr, int location, int addr_len)
910 void *ee_addr = ioaddr + Cfg9346;
911 int read_cmd = location | (EE_READ_CMD << addr_len);
915 writeb(EE_ENB & ~EE_CS, ee_addr);
916 writeb(EE_ENB, ee_addr);
919 /* Shift the read command bits out. */
920 for (i = 4 + addr_len; i >= 0; i--) {
921 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
922 writeb(EE_ENB | dataval, ee_addr);
924 writeb(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
927 writeb(EE_ENB, ee_addr);
930 for (i = 16; i > 0; i--) {
931 writeb(EE_ENB | EE_SHIFT_CLK, ee_addr);
934 (retval << 1) | ((readb(ee_addr) & EE_DATA_READ) ? 1 :
936 writeb(EE_ENB, ee_addr);
940 /* Terminate the EEPROM access. */
941 writeb(~EE_CS, ee_addr);
944 DPRINTK("EXIT - returning %d\n", retval);
948 /* MII serial management: mostly bogus for now. */
949 /* Read and write the MII management registers using software-generated
950 serial MDIO protocol.
951 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
952 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
953 "overclocking" issues. */
954 #define MDIO_DIR 0x80
955 #define MDIO_DATA_OUT 0x04
956 #define MDIO_DATA_IN 0x02
957 #define MDIO_CLK 0x01
958 #define MDIO_WRITE0 (MDIO_DIR)
959 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
961 #define mdio_delay() readb(mdio_addr)
964 static char mii_2_8139_map[8] = {
976 /* Syncronize the MII management interface by shifting 32 one bits out. */
977 static void mdio_sync(void *mdio_addr)
983 for (i = 32; i >= 0; i--) {
984 writeb(MDIO_WRITE1, mdio_addr);
986 writeb(MDIO_WRITE1 | MDIO_CLK, mdio_addr);
994 static int mdio_read(struct net_device *dev, int phy_id, int location)
996 struct netdrv_private *tp = netdev_priv(dev);
997 void *mdio_addr = tp->mmio_addr + Config4;
998 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
1004 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1005 DPRINTK("EXIT after directly using 8139 internal regs\n");
1006 return location < 8 && mii_2_8139_map[location] ?
1007 readw(tp->mmio_addr + mii_2_8139_map[location]) : 0;
1009 mdio_sync(mdio_addr);
1010 /* Shift the read command bits out. */
1011 for (i = 15; i >= 0; i--) {
1012 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
1014 writeb(MDIO_DIR | dataval, mdio_addr);
1016 writeb(MDIO_DIR | dataval | MDIO_CLK, mdio_addr);
1020 /* Read the two transition, 16 data, and wire-idle bits. */
1021 for (i = 19; i > 0; i--) {
1022 writeb(0, mdio_addr);
1024 retval = ((retval << 1) | ((readb(mdio_addr) & MDIO_DATA_IN))
1026 writeb(MDIO_CLK, mdio_addr);
1030 DPRINTK("EXIT, returning %d\n", (retval >> 1) & 0xffff);
1031 return (retval >> 1) & 0xffff;
1035 static void mdio_write(struct net_device *dev, int phy_id, int location,
1038 struct netdrv_private *tp = netdev_priv(dev);
1039 void *mdio_addr = tp->mmio_addr + Config4;
1041 (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1046 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1047 if (location < 8 && mii_2_8139_map[location]) {
1049 tp->mmio_addr + mii_2_8139_map[location]);
1050 readw(tp->mmio_addr + mii_2_8139_map[location]);
1052 DPRINTK("EXIT after directly using 8139 internal regs\n");
1055 mdio_sync(mdio_addr);
1057 /* Shift the command bits out. */
1058 for (i = 31; i >= 0; i--) {
1060 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1061 writeb(dataval, mdio_addr);
1063 writeb(dataval | MDIO_CLK, mdio_addr);
1067 /* Clear out extra bits. */
1068 for (i = 2; i > 0; i--) {
1069 writeb(0, mdio_addr);
1071 writeb(MDIO_CLK, mdio_addr);
1079 static int netdrv_open(struct net_device *dev)
1081 struct netdrv_private *tp = netdev_priv(dev);
1083 void *ioaddr = tp->mmio_addr;
1087 retval = request_irq(dev->irq, netdrv_interrupt, IRQF_SHARED, dev->name, dev);
1089 DPRINTK("EXIT, returning %d\n", retval);
1093 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1095 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1097 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1098 free_irq(dev->irq, dev);
1101 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1102 tp->tx_bufs, tp->tx_bufs_dma);
1104 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1105 tp->rx_ring, tp->rx_ring_dma);
1107 DPRINTK("EXIT, returning -ENOMEM\n");
1112 tp->full_duplex = tp->duplex_lock;
1113 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1115 netdrv_init_ring(dev);
1116 netdrv_hw_start(dev);
1118 netdev_dbg(dev, "ioaddr %#llx IRQ %d GP Pins %02x %s-duplex\n",
1119 (unsigned long long)pci_resource_start(tp->pci_dev, 1),
1120 dev->irq, NETDRV_R8(MediaStatus),
1121 tp->full_duplex ? "full" : "half");
1123 /* Set the timer to switch to check for link beat and perhaps switch
1124 to an alternate media type. */
1125 init_timer(&tp->timer);
1126 tp->timer.expires = jiffies + 3 * HZ;
1127 tp->timer.data = (unsigned long) dev;
1128 tp->timer.function = &netdrv_timer;
1129 add_timer(&tp->timer);
1131 DPRINTK("EXIT, returning 0\n");
1136 /* Start the hardware at open or resume. */
1137 static void netdrv_hw_start(struct net_device *dev)
1139 struct netdrv_private *tp = netdev_priv(dev);
1140 void *ioaddr = tp->mmio_addr;
1145 /* Soft reset the chip. */
1146 NETDRV_W8(ChipCmd, (NETDRV_R8(ChipCmd) & ChipCmdClear) | CmdReset);
1149 /* Check that the chip has finished the reset. */
1150 for (i = 1000; i > 0; i--)
1151 if ((NETDRV_R8(ChipCmd) & CmdReset) == 0)
1154 /* Restore our idea of the MAC address. */
1155 NETDRV_W32_F(MAC0 + 0, cpu_to_le32(*(u32 *)(dev->dev_addr + 0)));
1156 NETDRV_W32_F(MAC0 + 4, cpu_to_le32(*(u32 *)(dev->dev_addr + 4)));
1158 /* Must enable Tx/Rx before setting transfer thresholds! */
1159 NETDRV_W8_F(ChipCmd, (NETDRV_R8(ChipCmd) & ChipCmdClear) |
1160 CmdRxEnb | CmdTxEnb);
1162 i = netdrv_rx_config |
1163 (NETDRV_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1164 NETDRV_W32_F(RxConfig, i);
1166 /* Check this value: the documentation for IFG contradicts ifself. */
1167 NETDRV_W32(TxConfig, (TX_DMA_BURST << TxDMAShift));
1169 /* unlock Config[01234] and BMCR register writes */
1170 NETDRV_W8_F(Cfg9346, Cfg9346_Unlock);
1175 /* Lock Config[01234] and BMCR register writes */
1176 NETDRV_W8_F(Cfg9346, Cfg9346_Lock);
1179 /* init Rx ring buffer DMA address */
1180 NETDRV_W32_F(RxBuf, tp->rx_ring_dma);
1182 /* init Tx buffer DMA addresses */
1183 for (i = 0; i < NUM_TX_DESC; i++)
1184 NETDRV_W32_F(TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1186 NETDRV_W32_F(RxMissed, 0);
1188 netdrv_set_rx_mode(dev);
1190 /* no early-rx interrupts */
1191 NETDRV_W16(MultiIntr, NETDRV_R16(MultiIntr) & MultiIntrClear);
1193 /* make sure RxTx has started */
1194 NETDRV_W8_F(ChipCmd, (NETDRV_R8(ChipCmd) & ChipCmdClear) |
1195 CmdRxEnb | CmdTxEnb);
1197 /* Enable all known interrupts by setting the interrupt mask. */
1198 NETDRV_W16_F(IntrMask, netdrv_intr_mask);
1200 netif_start_queue(dev);
1206 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1207 static void netdrv_init_ring(struct net_device *dev)
1209 struct netdrv_private *tp = netdev_priv(dev);
1215 atomic_set(&tp->cur_tx, 0);
1216 atomic_set(&tp->dirty_tx, 0);
1218 for (i = 0; i < NUM_TX_DESC; i++) {
1219 tp->tx_info[i].skb = NULL;
1220 tp->tx_info[i].mapping = 0;
1221 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1228 static void netdrv_timer(unsigned long data)
1230 struct net_device *dev = (struct net_device *) data;
1231 struct netdrv_private *tp = netdev_priv(dev);
1232 void *ioaddr = tp->mmio_addr;
1233 int next_tick = 60 * HZ;
1236 mii_lpa = mdio_read(dev, tp->phys[0], MII_LPA);
1238 if (!tp->duplex_lock && mii_lpa != 0xffff) {
1239 int duplex = ((mii_lpa & LPA_100FULL) ||
1240 (mii_lpa & 0x01C0) == 0x0040);
1241 if (tp->full_duplex != duplex) {
1242 tp->full_duplex = duplex;
1243 netdev_info(dev, "Setting %s-duplex based on MII #%d link partner ability of %04x\n",
1244 tp->full_duplex ? "full" : "half",
1245 tp->phys[0], mii_lpa);
1246 NETDRV_W8(Cfg9346, Cfg9346_Unlock);
1247 NETDRV_W8(Config1, tp->full_duplex ? 0x60 : 0x20);
1248 NETDRV_W8(Cfg9346, Cfg9346_Lock);
1252 netdev_dbg(dev, "Media selection tick, Link partner %04x\n",
1253 NETDRV_R16(NWayLPAR));
1254 netdev_dbg(dev, "Other registers are IntMask %04x IntStatus %04x RxStatus %04lx\n",
1255 NETDRV_R16(IntrMask),
1256 NETDRV_R16(IntrStatus),
1257 NETDRV_R32(RxEarlyStatus));
1258 netdev_dbg(dev, "Chip config %02x %02x\n",
1259 NETDRV_R8(Config0), NETDRV_R8(Config1));
1261 tp->timer.expires = jiffies + next_tick;
1262 add_timer(&tp->timer);
1266 static void netdrv_tx_clear(struct net_device *dev)
1269 struct netdrv_private *tp = netdev_priv(dev);
1271 atomic_set(&tp->cur_tx, 0);
1272 atomic_set(&tp->dirty_tx, 0);
1274 /* Dump the unsent Tx packets. */
1275 for (i = 0; i < NUM_TX_DESC; i++) {
1276 struct ring_info *rp = &tp->tx_info[i];
1277 if (rp->mapping != 0) {
1278 pci_unmap_single(tp->pci_dev, rp->mapping,
1279 rp->skb->len, PCI_DMA_TODEVICE);
1283 dev_kfree_skb(rp->skb);
1285 dev->stats.tx_dropped++;
1291 static void netdrv_tx_timeout(struct net_device *dev)
1293 struct netdrv_private *tp = netdev_priv(dev);
1294 void *ioaddr = tp->mmio_addr;
1297 unsigned long flags;
1299 netdev_dbg(dev, "Transmit timeout, status %02x %04x media %02x\n",
1301 NETDRV_R16(IntrStatus),
1302 NETDRV_R8(MediaStatus));
1304 /* disable Tx ASAP, if not already */
1305 tmp8 = NETDRV_R8(ChipCmd);
1306 if (tmp8 & CmdTxEnb)
1307 NETDRV_W8(ChipCmd, tmp8 & ~CmdTxEnb);
1309 /* Disable interrupts by clearing the interrupt mask. */
1310 NETDRV_W16(IntrMask, 0x0000);
1312 /* Emit info to figure out what went wrong. */
1313 netdev_dbg(dev, "Tx queue start entry %d dirty entry %d\n",
1314 atomic_read(&tp->cur_tx),
1315 atomic_read(&tp->dirty_tx));
1316 for (i = 0; i < NUM_TX_DESC; i++)
1317 netdev_dbg(dev, "Tx descriptor %d is %08lx%s\n",
1318 i, NETDRV_R32(TxStatus0 + (i * 4)),
1319 i == atomic_read(&tp->dirty_tx) % NUM_TX_DESC ?
1320 "(queue head)" : "");
1322 /* Stop a shared interrupt from scavenging while we are. */
1323 spin_lock_irqsave(&tp->lock, flags);
1325 netdrv_tx_clear(dev);
1327 spin_unlock_irqrestore(&tp->lock, flags);
1329 /* ...and finally, reset everything */
1330 netdrv_hw_start(dev);
1332 netif_wake_queue(dev);
1337 static int netdrv_start_xmit(struct sk_buff *skb, struct net_device *dev)
1339 struct netdrv_private *tp = netdev_priv(dev);
1340 void *ioaddr = tp->mmio_addr;
1343 /* Calculate the next Tx descriptor entry. */
1344 entry = atomic_read(&tp->cur_tx) % NUM_TX_DESC;
1346 assert(tp->tx_info[entry].skb == NULL);
1347 assert(tp->tx_info[entry].mapping == 0);
1349 tp->tx_info[entry].skb = skb;
1350 /* tp->tx_info[entry].mapping = 0; */
1351 skb_copy_from_linear_data(skb, tp->tx_buf[entry], skb->len);
1353 /* Note: the chip doesn't have auto-pad! */
1354 NETDRV_W32(TxStatus0 + (entry * sizeof(u32)),
1355 tp->tx_flag | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN));
1357 atomic_inc(&tp->cur_tx);
1358 if ((atomic_read(&tp->cur_tx) - atomic_read(&tp->dirty_tx)) >= NUM_TX_DESC)
1359 netif_stop_queue(dev);
1361 netdev_dbg(dev, "Queued Tx packet at %p size %u to slot %d\n",
1362 skb->data, skb->len, entry);
1364 return NETDEV_TX_OK;
1368 static void netdrv_tx_interrupt(struct net_device *dev,
1369 struct netdrv_private *tp,
1372 int cur_tx, dirty_tx, tx_left;
1374 assert(dev != NULL);
1376 assert(ioaddr != NULL);
1378 dirty_tx = atomic_read(&tp->dirty_tx);
1380 cur_tx = atomic_read(&tp->cur_tx);
1381 tx_left = cur_tx - dirty_tx;
1382 while (tx_left > 0) {
1383 int entry = dirty_tx % NUM_TX_DESC;
1386 txstatus = NETDRV_R32(TxStatus0 + (entry * sizeof(u32)));
1388 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1389 break; /* It still hasn't been Txed */
1391 /* Note: TxCarrierLost is always asserted at 100mbps. */
1392 if (txstatus & (TxOutOfWindow | TxAborted)) {
1393 /* There was an major error, log it. */
1394 netdev_dbg(dev, "Transmit error, Tx status %#08x\n",
1396 dev->stats.tx_errors++;
1397 if (txstatus & TxAborted) {
1398 dev->stats.tx_aborted_errors++;
1399 NETDRV_W32(TxConfig, TxClearAbt | (TX_DMA_BURST << TxDMAShift));
1401 if (txstatus & TxCarrierLost)
1402 dev->stats.tx_carrier_errors++;
1403 if (txstatus & TxOutOfWindow)
1404 dev->stats.tx_window_errors++;
1406 if (txstatus & TxUnderrun) {
1407 /* Add 64 to the Tx FIFO threshold. */
1408 if (tp->tx_flag < 0x00300000)
1409 tp->tx_flag += 0x00020000;
1410 dev->stats.tx_fifo_errors++;
1412 dev->stats.collisions += (txstatus >> 24) & 15;
1413 dev->stats.tx_bytes += txstatus & 0x7ff;
1414 dev->stats.tx_packets++;
1417 /* Free the original skb. */
1418 if (tp->tx_info[entry].mapping != 0) {
1419 pci_unmap_single(tp->pci_dev,
1420 tp->tx_info[entry].mapping,
1421 tp->tx_info[entry].skb->len,
1423 tp->tx_info[entry].mapping = 0;
1425 dev_kfree_skb_irq(tp->tx_info[entry].skb);
1426 tp->tx_info[entry].skb = NULL;
1428 if (dirty_tx < 0) { /* handle signed int overflow */
1429 atomic_sub(cur_tx, &tp->cur_tx); /* XXX racy? */
1430 dirty_tx = cur_tx - tx_left + 1;
1432 if (netif_queue_stopped(dev))
1433 netif_wake_queue(dev);
1435 cur_tx = atomic_read(&tp->cur_tx);
1436 tx_left = cur_tx - dirty_tx;
1440 #ifndef NETDRV_NDEBUG
1441 if (atomic_read(&tp->cur_tx) - dirty_tx > NUM_TX_DESC) {
1442 netdev_err(dev, "Out-of-sync dirty pointer, %d vs. %d\n",
1443 dirty_tx, atomic_read(&tp->cur_tx));
1444 dirty_tx += NUM_TX_DESC;
1446 #endif /* NETDRV_NDEBUG */
1448 atomic_set(&tp->dirty_tx, dirty_tx);
1452 /* TODO: clean this up! Rx reset need not be this intensive */
1453 static void netdrv_rx_err(u32 rx_status, struct net_device *dev,
1454 struct netdrv_private *tp, void *ioaddr)
1457 int tmp_work = 1000;
1459 netdev_dbg(dev, "Ethernet frame had errors, status %08x\n", rx_status);
1460 if (rx_status & RxTooLong)
1461 netdev_dbg(dev, "Oversized Ethernet frame, status %04x!\n",
1463 /* A.C.: The chip hangs here. */
1464 dev->stats.rx_errors++;
1465 if (rx_status & (RxBadSymbol | RxBadAlign))
1466 dev->stats.rx_frame_errors++;
1467 if (rx_status & (RxRunt | RxTooLong))
1468 dev->stats.rx_length_errors++;
1469 if (rx_status & RxCRCErr)
1470 dev->stats.rx_crc_errors++;
1471 /* Reset the receiver, based on RealTek recommendation.(Bug?) */
1474 /* disable receive */
1475 tmp8 = NETDRV_R8(ChipCmd) & ChipCmdClear;
1476 NETDRV_W8_F(ChipCmd, tmp8 | CmdTxEnb);
1478 /* A.C.: Reset the multicast list. */
1479 netdrv_set_rx_mode(dev);
1481 /* XXX potentially temporary hack to
1482 * restart hung receiver */
1483 while (--tmp_work > 0) {
1484 tmp8 = NETDRV_R8(ChipCmd);
1485 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1487 NETDRV_W8_F(ChipCmd,
1488 (tmp8 & ChipCmdClear) | CmdRxEnb | CmdTxEnb);
1491 /* G.S.: Re-enable receiver */
1492 /* XXX temporary hack to work around receiver hang */
1493 netdrv_set_rx_mode(dev);
1496 netdev_warn(dev, "tx/rx enable wait too long\n");
1500 /* The data sheet doesn't describe the Rx ring at all, so I'm guessing at the
1501 field alignments and semantics. */
1502 static void netdrv_rx_interrupt(struct net_device *dev,
1503 struct netdrv_private *tp, void *ioaddr)
1505 unsigned char *rx_ring;
1508 assert(dev != NULL);
1510 assert(ioaddr != NULL);
1512 rx_ring = tp->rx_ring;
1513 cur_rx = tp->cur_rx;
1515 netdev_dbg(dev, "In netdrv_rx(), current %04x BufAddr %04x, free to %04x, Cmd %02x\n",
1516 cur_rx, NETDRV_R16(RxBufAddr),
1517 NETDRV_R16(RxBufPtr), NETDRV_R8(ChipCmd));
1519 while ((NETDRV_R8(ChipCmd) & RxBufEmpty) == 0) {
1520 int ring_offset = cur_rx % RX_BUF_LEN;
1522 unsigned int rx_size;
1523 unsigned int pkt_size;
1524 struct sk_buff *skb;
1526 /* read size+status of next frame from DMA ring buffer */
1527 rx_status = le32_to_cpu(*(u32 *)(rx_ring + ring_offset));
1528 rx_size = rx_status >> 16;
1529 pkt_size = rx_size - 4;
1531 netdev_dbg(dev, "netdrv_rx() status %04x, size %04x, cur %04x\n",
1532 rx_status, rx_size, cur_rx);
1533 #if defined(NETDRV_DEBUG) && (NETDRV_DEBUG > 2)
1534 print_hex_dump_bytes("Frame contents: ", HEX_DUMP_OFFSET,
1535 &rx_ring[ring_offset], 70);
1538 /* If Rx err or invalid rx_size/rx_status received
1539 *(which happens if we get lost in the ring),
1540 * Rx process gets reset, so we abort any further
1543 if ((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
1544 (!(rx_status & RxStatusOK))) {
1545 netdrv_rx_err(rx_status, dev, tp, ioaddr);
1549 /* Malloc up new buffer, compatible with net-2e. */
1550 /* Omit the four octet CRC from the length. */
1552 /* TODO: consider allocating skb's outside of
1553 * interrupt context, both to speed interrupt processing,
1554 * and also to reduce the chances of having to
1555 * drop packets here under memory pressure.
1558 skb = dev_alloc_skb(pkt_size + 2);
1560 skb_reserve(skb, 2); /* 16 byte align the IP fields. */
1562 skb_copy_to_linear_data(skb, &rx_ring[ring_offset + 4], pkt_size);
1563 skb_put(skb, pkt_size);
1565 skb->protocol = eth_type_trans(skb, dev);
1567 dev->stats.rx_bytes += pkt_size;
1568 dev->stats.rx_packets++;
1570 netdev_warn(dev, "Memory squeeze, dropping packet\n");
1571 dev->stats.rx_dropped++;
1574 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
1575 NETDRV_W16_F(RxBufPtr, cur_rx - 16);
1578 netdev_dbg(dev, "Done netdrv_rx(), current %04x BufAddr %04x, free to %04x, Cmd %02x\n",
1579 cur_rx, NETDRV_R16(RxBufAddr),
1580 NETDRV_R16(RxBufPtr), NETDRV_R8(ChipCmd));
1582 tp->cur_rx = cur_rx;
1586 static void netdrv_weird_interrupt(struct net_device *dev,
1587 struct netdrv_private *tp,
1589 int status, int link_changed)
1591 netdev_printk(KERN_DEBUG, dev, "Abnormal interrupt, status %08x\n",
1594 assert(dev != NULL);
1596 assert(ioaddr != NULL);
1598 /* Update the error count. */
1599 dev->stats.rx_missed_errors += NETDRV_R32(RxMissed);
1600 NETDRV_W32(RxMissed, 0);
1602 if ((status & RxUnderrun) && link_changed &&
1603 (tp->drv_flags & HAS_LNK_CHNG)) {
1604 /* Really link-change on new chips. */
1605 int lpar = NETDRV_R16(NWayLPAR);
1606 int duplex = ((lpar & 0x0100) || (lpar & 0x01C0) == 0x0040 ||
1608 if (tp->full_duplex != duplex) {
1609 tp->full_duplex = duplex;
1610 NETDRV_W8(Cfg9346, Cfg9346_Unlock);
1611 NETDRV_W8(Config1, tp->full_duplex ? 0x60 : 0x20);
1612 NETDRV_W8(Cfg9346, Cfg9346_Lock);
1614 status &= ~RxUnderrun;
1617 /* XXX along with netdrv_rx_err, are we double-counting errors? */
1618 if (status & (RxUnderrun | RxOverflow | RxErr | RxFIFOOver))
1619 dev->stats.rx_errors++;
1621 if (status & (PCSTimeout))
1622 dev->stats.rx_length_errors++;
1623 if (status & (RxUnderrun | RxFIFOOver))
1624 dev->stats.rx_fifo_errors++;
1625 if (status & RxOverflow) {
1626 dev->stats.rx_over_errors++;
1627 tp->cur_rx = NETDRV_R16(RxBufAddr) % RX_BUF_LEN;
1628 NETDRV_W16_F(RxBufPtr, tp->cur_rx - 16);
1630 if (status & PCIErr) {
1632 pci_read_config_word(tp->pci_dev, PCI_STATUS, &pci_cmd_status);
1634 netdev_err(dev, "PCI Bus error %04x\n", pci_cmd_status);
1639 /* The interrupt handler does all of the Rx thread work and cleans up
1640 after the Tx thread. */
1641 static irqreturn_t netdrv_interrupt(int irq, void *dev_instance)
1643 struct net_device *dev = (struct net_device *) dev_instance;
1644 struct netdrv_private *tp = netdev_priv(dev);
1645 int boguscnt = max_interrupt_work;
1646 void *ioaddr = tp->mmio_addr;
1647 int status = 0, link_changed = 0; /* avoid bogus "uninit" warning */
1650 spin_lock(&tp->lock);
1653 status = NETDRV_R16(IntrStatus);
1655 /* h/w no longer present(hotplug?) or major error, bail */
1656 if (status == 0xFFFF)
1660 /* Acknowledge all of the current interrupt sources ASAP */
1661 NETDRV_W16_F(IntrStatus, status);
1663 netdev_dbg(dev, "interrupt status=%#04x new intstat=%#04x\n",
1664 status, NETDRV_R16(IntrStatus));
1667 (PCIErr | PCSTimeout | RxUnderrun | RxOverflow |
1668 RxFIFOOver | TxErr | TxOK | RxErr | RxOK)) == 0)
1671 /* Check uncommon events with one test. */
1672 if (status & (PCIErr | PCSTimeout | RxUnderrun | RxOverflow |
1673 RxFIFOOver | TxErr | RxErr))
1674 netdrv_weird_interrupt(dev, tp, ioaddr,
1675 status, link_changed);
1677 if (status & (RxOK | RxUnderrun | RxOverflow | RxFIFOOver)) /* Rx interrupt */
1678 netdrv_rx_interrupt(dev, tp, ioaddr);
1680 if (status & (TxOK | TxErr))
1681 netdrv_tx_interrupt(dev, tp, ioaddr);
1684 } while (boguscnt > 0);
1686 if (boguscnt <= 0) {
1687 netdev_warn(dev, "Too much work at interrupt, IntrStatus=%#04x\n",
1690 /* Clear all interrupt sources. */
1691 NETDRV_W16(IntrStatus, 0xffff);
1694 spin_unlock(&tp->lock);
1696 netdev_dbg(dev, "exiting interrupt, intr_status=%#04x\n",
1697 NETDRV_R16(IntrStatus));
1698 return IRQ_RETVAL(handled);
1702 static int netdrv_close(struct net_device *dev)
1704 struct netdrv_private *tp = netdev_priv(dev);
1705 void *ioaddr = tp->mmio_addr;
1706 unsigned long flags;
1710 netif_stop_queue(dev);
1712 netdev_dbg(dev, "Shutting down ethercard, status was %#04x\n",
1713 NETDRV_R16(IntrStatus));
1715 del_timer_sync(&tp->timer);
1717 spin_lock_irqsave(&tp->lock, flags);
1719 /* Stop the chip's Tx and Rx DMA processes. */
1720 NETDRV_W8(ChipCmd, (NETDRV_R8(ChipCmd) & ChipCmdClear));
1722 /* Disable interrupts by clearing the interrupt mask. */
1723 NETDRV_W16(IntrMask, 0x0000);
1725 /* Update the error counts. */
1726 dev->stats.rx_missed_errors += NETDRV_R32(RxMissed);
1727 NETDRV_W32(RxMissed, 0);
1729 spin_unlock_irqrestore(&tp->lock, flags);
1731 free_irq(dev->irq, dev);
1733 netdrv_tx_clear(dev);
1735 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1736 tp->rx_ring, tp->rx_ring_dma);
1737 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1738 tp->tx_bufs, tp->tx_bufs_dma);
1742 /* Green! Put the chip in low-power mode. */
1743 NETDRV_W8(Cfg9346, Cfg9346_Unlock);
1744 NETDRV_W8(Config1, 0x03);
1745 NETDRV_W8(Cfg9346, Cfg9346_Lock);
1752 static int netdrv_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1754 struct netdrv_private *tp = netdev_priv(dev);
1755 struct mii_ioctl_data *data = if_mii(rq);
1756 unsigned long flags;
1762 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
1763 data->phy_id = tp->phys[0] & 0x3f;
1766 case SIOCGMIIREG: /* Read MII PHY register. */
1767 spin_lock_irqsave(&tp->lock, flags);
1768 data->val_out = mdio_read(dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
1769 spin_unlock_irqrestore(&tp->lock, flags);
1772 case SIOCSMIIREG: /* Write MII PHY register. */
1773 spin_lock_irqsave(&tp->lock, flags);
1774 mdio_write(dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
1775 spin_unlock_irqrestore(&tp->lock, flags);
1783 DPRINTK("EXIT, returning %d\n", rc);
1787 /* Set or clear the multicast filter for this adaptor.
1788 This routine is not state sensitive and need not be SMP locked. */
1790 static void netdrv_set_rx_mode(struct net_device *dev)
1792 struct netdrv_private *tp = netdev_priv(dev);
1793 void *ioaddr = tp->mmio_addr;
1794 u32 mc_filter[2]; /* Multicast hash filter */
1800 netdev_dbg(dev, "%s(%04x) done -- Rx config %08lx\n",
1801 __func__, dev->flags, NETDRV_R32(RxConfig));
1803 /* Note: do not reorder, GCC is clever about common statements. */
1804 if (dev->flags & IFF_PROMISC) {
1806 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
1808 mc_filter[1] = mc_filter[0] = 0xffffffff;
1809 } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
1810 (dev->flags & IFF_ALLMULTI)) {
1811 /* Too many to filter perfectly -- accept all multicasts. */
1812 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
1813 mc_filter[1] = mc_filter[0] = 0xffffffff;
1815 struct netdev_hw_addr *ha;
1817 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
1818 mc_filter[1] = mc_filter[0] = 0;
1819 netdev_for_each_mc_addr(ha, dev) {
1820 int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1822 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1826 /* if called from irq handler, lock already acquired */
1828 spin_lock_irq(&tp->lock);
1830 /* We can safely update without stopping the chip. */
1831 tmp = netdrv_rx_config | rx_mode |
1832 (NETDRV_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1833 NETDRV_W32_F(RxConfig, tmp);
1834 NETDRV_W32_F(MAR0 + 0, mc_filter[0]);
1835 NETDRV_W32_F(MAR0 + 4, mc_filter[1]);
1838 spin_unlock_irq(&tp->lock);
1846 static int netdrv_suspend(struct pci_dev *pdev, pm_message_t state)
1848 struct net_device *dev = pci_get_drvdata(pdev);
1849 struct netdrv_private *tp = netdev_priv(dev);
1850 void *ioaddr = tp->mmio_addr;
1851 unsigned long flags;
1853 if (!netif_running(dev))
1855 netif_device_detach(dev);
1857 spin_lock_irqsave(&tp->lock, flags);
1859 /* Disable interrupts, stop Tx and Rx. */
1860 NETDRV_W16(IntrMask, 0x0000);
1861 NETDRV_W8(ChipCmd, (NETDRV_R8(ChipCmd) & ChipCmdClear));
1863 /* Update the error counts. */
1864 dev->stats.rx_missed_errors += NETDRV_R32(RxMissed);
1865 NETDRV_W32(RxMissed, 0);
1867 spin_unlock_irqrestore(&tp->lock, flags);
1869 pci_save_state(pdev);
1870 pci_set_power_state(pdev, PCI_D3hot);
1876 static int netdrv_resume(struct pci_dev *pdev)
1878 struct net_device *dev = pci_get_drvdata(pdev);
1879 /*struct netdrv_private *tp = netdev_priv(dev);*/
1881 if (!netif_running(dev))
1883 pci_set_power_state(pdev, PCI_D0);
1884 pci_restore_state(pdev);
1885 netif_device_attach(dev);
1886 netdrv_hw_start(dev);
1891 #endif /* CONFIG_PM */
1894 static struct pci_driver netdrv_pci_driver = {
1896 .id_table = netdrv_pci_tbl,
1897 .probe = netdrv_init_one,
1898 .remove = __devexit_p(netdrv_remove_one),
1900 .suspend = netdrv_suspend,
1901 .resume = netdrv_resume,
1902 #endif /* CONFIG_PM */
1906 static int __init netdrv_init_module(void)
1908 /* when a module, this is printed whether or not devices are found in probe */
1912 return pci_register_driver(&netdrv_pci_driver);
1916 static void __exit netdrv_cleanup_module(void)
1918 pci_unregister_driver(&netdrv_pci_driver);
1922 module_init(netdrv_init_module);
1923 module_exit(netdrv_cleanup_module);