1 /* $Id: sungem.c,v 1.44.2.22 2002/03/13 01:18:12 davem Exp $
2 * sungem.c: Sun GEM ethernet driver.
4 * Copyright (C) 2000, 2001, 2002, 2003 David S. Miller (davem@redhat.com)
6 * Support for Apple GMAC and assorted PHYs, WOL, Power Management
7 * (C) 2001,2002,2003 Benjamin Herrenscmidt (benh@kernel.crashing.org)
8 * (C) 2004,2005 Benjamin Herrenscmidt, IBM Corp.
10 * NAPI and NETPOLL support
11 * (C) 2004 by Eric Lemoine (eric.lemoine@gmail.com)
14 * - Now that the driver was significantly simplified, I need to rework
15 * the locking. I'm sure we don't need _2_ spinlocks, and we probably
16 * can avoid taking most of them for so long period of time (and schedule
17 * instead). The main issues at this point are caused by the netdev layer
20 * gem_change_mtu() and gem_set_multicast() are called with a read_lock()
21 * help by net/core/dev.c, thus they can't schedule. That means they can't
22 * call netif_poll_disable() neither, thus force gem_poll() to keep a spinlock
23 * where it could have been dropped. change_mtu especially would love also to
24 * be able to msleep instead of horrid locked delays when resetting the HW,
25 * but that read_lock() makes it impossible, unless I defer it's action to
26 * the reset task, which means it'll be asynchronous (won't take effect until
27 * the system schedules a bit).
29 * Also, it would probably be possible to also remove most of the long-life
30 * locking in open/resume code path (gem_reinit_chip) by beeing more careful
31 * about when we can start taking interrupts or get xmit() called...
34 #include <linux/module.h>
35 #include <linux/kernel.h>
36 #include <linux/types.h>
37 #include <linux/fcntl.h>
38 #include <linux/interrupt.h>
39 #include <linux/ioport.h>
41 #include <linux/slab.h>
42 #include <linux/string.h>
43 #include <linux/delay.h>
44 #include <linux/init.h>
45 #include <linux/errno.h>
46 #include <linux/pci.h>
47 #include <linux/dma-mapping.h>
48 #include <linux/netdevice.h>
49 #include <linux/etherdevice.h>
50 #include <linux/skbuff.h>
51 #include <linux/mii.h>
52 #include <linux/ethtool.h>
53 #include <linux/crc32.h>
54 #include <linux/random.h>
55 #include <linux/workqueue.h>
56 #include <linux/if_vlan.h>
57 #include <linux/bitops.h>
59 #include <asm/system.h>
61 #include <asm/byteorder.h>
62 #include <asm/uaccess.h>
66 #include <asm/idprom.h>
67 #include <asm/openprom.h>
68 #include <asm/oplib.h>
72 #ifdef CONFIG_PPC_PMAC
73 #include <asm/pci-bridge.h>
75 #include <asm/machdep.h>
76 #include <asm/pmac_feature.h>
79 #include "sungem_phy.h"
82 /* Stripping FCS is causing problems, disabled for now */
85 #define DEFAULT_MSG (NETIF_MSG_DRV | \
89 #define ADVERTISE_MASK (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | \
90 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | \
91 SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)
93 #define DRV_NAME "sungem"
94 #define DRV_VERSION "0.98"
95 #define DRV_RELDATE "8/24/03"
96 #define DRV_AUTHOR "David S. Miller (davem@redhat.com)"
98 static char version[] __devinitdata =
99 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n";
101 MODULE_AUTHOR(DRV_AUTHOR);
102 MODULE_DESCRIPTION("Sun GEM Gbit ethernet driver");
103 MODULE_LICENSE("GPL");
105 #define GEM_MODULE_NAME "gem"
106 #define PFX GEM_MODULE_NAME ": "
108 static struct pci_device_id gem_pci_tbl[] = {
109 { PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_GEM,
110 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
112 /* These models only differ from the original GEM in
113 * that their tx/rx fifos are of a different size and
114 * they only support 10/100 speeds. -DaveM
116 * Apple's GMAC does support gigabit on machines with
117 * the BCM54xx PHYs. -BenH
119 { PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_RIO_GEM,
120 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
121 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC,
122 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
123 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMACP,
124 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
125 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC2,
126 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
127 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_K2_GMAC,
128 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
129 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_SH_SUNGEM,
130 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
134 MODULE_DEVICE_TABLE(pci, gem_pci_tbl);
136 static u16 __phy_read(struct gem *gp, int phy_addr, int reg)
143 cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD;
144 cmd |= (reg << 18) & MIF_FRAME_REGAD;
145 cmd |= (MIF_FRAME_TAMSB);
146 writel(cmd, gp->regs + MIF_FRAME);
149 cmd = readl(gp->regs + MIF_FRAME);
150 if (cmd & MIF_FRAME_TALSB)
159 return cmd & MIF_FRAME_DATA;
162 static inline int _phy_read(struct net_device *dev, int mii_id, int reg)
164 struct gem *gp = dev->priv;
165 return __phy_read(gp, mii_id, reg);
168 static inline u16 phy_read(struct gem *gp, int reg)
170 return __phy_read(gp, gp->mii_phy_addr, reg);
173 static void __phy_write(struct gem *gp, int phy_addr, int reg, u16 val)
180 cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD;
181 cmd |= (reg << 18) & MIF_FRAME_REGAD;
182 cmd |= (MIF_FRAME_TAMSB);
183 cmd |= (val & MIF_FRAME_DATA);
184 writel(cmd, gp->regs + MIF_FRAME);
187 cmd = readl(gp->regs + MIF_FRAME);
188 if (cmd & MIF_FRAME_TALSB)
195 static inline void _phy_write(struct net_device *dev, int mii_id, int reg, int val)
197 struct gem *gp = dev->priv;
198 __phy_write(gp, mii_id, reg, val & 0xffff);
201 static inline void phy_write(struct gem *gp, int reg, u16 val)
203 __phy_write(gp, gp->mii_phy_addr, reg, val);
206 static inline void gem_enable_ints(struct gem *gp)
208 /* Enable all interrupts but TXDONE */
209 writel(GREG_STAT_TXDONE, gp->regs + GREG_IMASK);
212 static inline void gem_disable_ints(struct gem *gp)
214 /* Disable all interrupts, including TXDONE */
215 writel(GREG_STAT_NAPI | GREG_STAT_TXDONE, gp->regs + GREG_IMASK);
218 static void gem_get_cell(struct gem *gp)
220 BUG_ON(gp->cell_enabled < 0);
222 #ifdef CONFIG_PPC_PMAC
223 if (gp->cell_enabled == 1) {
225 pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 1);
228 #endif /* CONFIG_PPC_PMAC */
231 /* Turn off the chip's clock */
232 static void gem_put_cell(struct gem *gp)
234 BUG_ON(gp->cell_enabled <= 0);
236 #ifdef CONFIG_PPC_PMAC
237 if (gp->cell_enabled == 0) {
239 pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 0);
242 #endif /* CONFIG_PPC_PMAC */
245 static void gem_handle_mif_event(struct gem *gp, u32 reg_val, u32 changed_bits)
247 if (netif_msg_intr(gp))
248 printk(KERN_DEBUG "%s: mif interrupt\n", gp->dev->name);
251 static int gem_pcs_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
253 u32 pcs_istat = readl(gp->regs + PCS_ISTAT);
256 if (netif_msg_intr(gp))
257 printk(KERN_DEBUG "%s: pcs interrupt, pcs_istat: 0x%x\n",
258 gp->dev->name, pcs_istat);
260 if (!(pcs_istat & PCS_ISTAT_LSC)) {
261 printk(KERN_ERR "%s: PCS irq but no link status change???\n",
266 /* The link status bit latches on zero, so you must
267 * read it twice in such a case to see a transition
268 * to the link being up.
270 pcs_miistat = readl(gp->regs + PCS_MIISTAT);
271 if (!(pcs_miistat & PCS_MIISTAT_LS))
273 (readl(gp->regs + PCS_MIISTAT) &
276 if (pcs_miistat & PCS_MIISTAT_ANC) {
277 /* The remote-fault indication is only valid
278 * when autoneg has completed.
280 if (pcs_miistat & PCS_MIISTAT_RF)
281 printk(KERN_INFO "%s: PCS AutoNEG complete, "
282 "RemoteFault\n", dev->name);
284 printk(KERN_INFO "%s: PCS AutoNEG complete.\n",
288 if (pcs_miistat & PCS_MIISTAT_LS) {
289 printk(KERN_INFO "%s: PCS link is now up.\n",
291 netif_carrier_on(gp->dev);
293 printk(KERN_INFO "%s: PCS link is now down.\n",
295 netif_carrier_off(gp->dev);
296 /* If this happens and the link timer is not running,
297 * reset so we re-negotiate.
299 if (!timer_pending(&gp->link_timer))
306 static int gem_txmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
308 u32 txmac_stat = readl(gp->regs + MAC_TXSTAT);
310 if (netif_msg_intr(gp))
311 printk(KERN_DEBUG "%s: txmac interrupt, txmac_stat: 0x%x\n",
312 gp->dev->name, txmac_stat);
314 /* Defer timer expiration is quite normal,
315 * don't even log the event.
317 if ((txmac_stat & MAC_TXSTAT_DTE) &&
318 !(txmac_stat & ~MAC_TXSTAT_DTE))
321 if (txmac_stat & MAC_TXSTAT_URUN) {
322 printk(KERN_ERR "%s: TX MAC xmit underrun.\n",
324 gp->net_stats.tx_fifo_errors++;
327 if (txmac_stat & MAC_TXSTAT_MPE) {
328 printk(KERN_ERR "%s: TX MAC max packet size error.\n",
330 gp->net_stats.tx_errors++;
333 /* The rest are all cases of one of the 16-bit TX
336 if (txmac_stat & MAC_TXSTAT_NCE)
337 gp->net_stats.collisions += 0x10000;
339 if (txmac_stat & MAC_TXSTAT_ECE) {
340 gp->net_stats.tx_aborted_errors += 0x10000;
341 gp->net_stats.collisions += 0x10000;
344 if (txmac_stat & MAC_TXSTAT_LCE) {
345 gp->net_stats.tx_aborted_errors += 0x10000;
346 gp->net_stats.collisions += 0x10000;
349 /* We do not keep track of MAC_TXSTAT_FCE and
350 * MAC_TXSTAT_PCE events.
355 /* When we get a RX fifo overflow, the RX unit in GEM is probably hung
356 * so we do the following.
358 * If any part of the reset goes wrong, we return 1 and that causes the
359 * whole chip to be reset.
361 static int gem_rxmac_reset(struct gem *gp)
363 struct net_device *dev = gp->dev;
368 /* First, reset & disable MAC RX. */
369 writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST);
370 for (limit = 0; limit < 5000; limit++) {
371 if (!(readl(gp->regs + MAC_RXRST) & MAC_RXRST_CMD))
376 printk(KERN_ERR "%s: RX MAC will not reset, resetting whole "
377 "chip.\n", dev->name);
381 writel(gp->mac_rx_cfg & ~MAC_RXCFG_ENAB,
382 gp->regs + MAC_RXCFG);
383 for (limit = 0; limit < 5000; limit++) {
384 if (!(readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB))
389 printk(KERN_ERR "%s: RX MAC will not disable, resetting whole "
390 "chip.\n", dev->name);
394 /* Second, disable RX DMA. */
395 writel(0, gp->regs + RXDMA_CFG);
396 for (limit = 0; limit < 5000; limit++) {
397 if (!(readl(gp->regs + RXDMA_CFG) & RXDMA_CFG_ENABLE))
402 printk(KERN_ERR "%s: RX DMA will not disable, resetting whole "
403 "chip.\n", dev->name);
409 /* Execute RX reset command. */
410 writel(gp->swrst_base | GREG_SWRST_RXRST,
411 gp->regs + GREG_SWRST);
412 for (limit = 0; limit < 5000; limit++) {
413 if (!(readl(gp->regs + GREG_SWRST) & GREG_SWRST_RXRST))
418 printk(KERN_ERR "%s: RX reset command will not execute, resetting "
419 "whole chip.\n", dev->name);
423 /* Refresh the RX ring. */
424 for (i = 0; i < RX_RING_SIZE; i++) {
425 struct gem_rxd *rxd = &gp->init_block->rxd[i];
427 if (gp->rx_skbs[i] == NULL) {
428 printk(KERN_ERR "%s: Parts of RX ring empty, resetting "
429 "whole chip.\n", dev->name);
433 rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
435 gp->rx_new = gp->rx_old = 0;
437 /* Now we must reprogram the rest of RX unit. */
438 desc_dma = (u64) gp->gblock_dvma;
439 desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd));
440 writel(desc_dma >> 32, gp->regs + RXDMA_DBHI);
441 writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW);
442 writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
443 val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) |
444 ((14 / 2) << 13) | RXDMA_CFG_FTHRESH_128);
445 writel(val, gp->regs + RXDMA_CFG);
446 if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN)
447 writel(((5 & RXDMA_BLANK_IPKTS) |
448 ((8 << 12) & RXDMA_BLANK_ITIME)),
449 gp->regs + RXDMA_BLANK);
451 writel(((5 & RXDMA_BLANK_IPKTS) |
452 ((4 << 12) & RXDMA_BLANK_ITIME)),
453 gp->regs + RXDMA_BLANK);
454 val = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF);
455 val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON);
456 writel(val, gp->regs + RXDMA_PTHRESH);
457 val = readl(gp->regs + RXDMA_CFG);
458 writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
459 writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK);
460 val = readl(gp->regs + MAC_RXCFG);
461 writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
466 static int gem_rxmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
468 u32 rxmac_stat = readl(gp->regs + MAC_RXSTAT);
471 if (netif_msg_intr(gp))
472 printk(KERN_DEBUG "%s: rxmac interrupt, rxmac_stat: 0x%x\n",
473 gp->dev->name, rxmac_stat);
475 if (rxmac_stat & MAC_RXSTAT_OFLW) {
476 u32 smac = readl(gp->regs + MAC_SMACHINE);
478 printk(KERN_ERR "%s: RX MAC fifo overflow smac[%08x].\n",
480 gp->net_stats.rx_over_errors++;
481 gp->net_stats.rx_fifo_errors++;
483 ret = gem_rxmac_reset(gp);
486 if (rxmac_stat & MAC_RXSTAT_ACE)
487 gp->net_stats.rx_frame_errors += 0x10000;
489 if (rxmac_stat & MAC_RXSTAT_CCE)
490 gp->net_stats.rx_crc_errors += 0x10000;
492 if (rxmac_stat & MAC_RXSTAT_LCE)
493 gp->net_stats.rx_length_errors += 0x10000;
495 /* We do not track MAC_RXSTAT_FCE and MAC_RXSTAT_VCE
501 static int gem_mac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
503 u32 mac_cstat = readl(gp->regs + MAC_CSTAT);
505 if (netif_msg_intr(gp))
506 printk(KERN_DEBUG "%s: mac interrupt, mac_cstat: 0x%x\n",
507 gp->dev->name, mac_cstat);
509 /* This interrupt is just for pause frame and pause
510 * tracking. It is useful for diagnostics and debug
511 * but probably by default we will mask these events.
513 if (mac_cstat & MAC_CSTAT_PS)
516 if (mac_cstat & MAC_CSTAT_PRCV)
517 gp->pause_last_time_recvd = (mac_cstat >> 16);
522 static int gem_mif_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
524 u32 mif_status = readl(gp->regs + MIF_STATUS);
525 u32 reg_val, changed_bits;
527 reg_val = (mif_status & MIF_STATUS_DATA) >> 16;
528 changed_bits = (mif_status & MIF_STATUS_STAT);
530 gem_handle_mif_event(gp, reg_val, changed_bits);
535 static int gem_pci_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
537 u32 pci_estat = readl(gp->regs + GREG_PCIESTAT);
539 if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
540 gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) {
541 printk(KERN_ERR "%s: PCI error [%04x] ",
542 dev->name, pci_estat);
544 if (pci_estat & GREG_PCIESTAT_BADACK)
545 printk("<No ACK64# during ABS64 cycle> ");
546 if (pci_estat & GREG_PCIESTAT_DTRTO)
547 printk("<Delayed transaction timeout> ");
548 if (pci_estat & GREG_PCIESTAT_OTHER)
552 pci_estat |= GREG_PCIESTAT_OTHER;
553 printk(KERN_ERR "%s: PCI error\n", dev->name);
556 if (pci_estat & GREG_PCIESTAT_OTHER) {
559 /* Interrogate PCI config space for the
562 pci_read_config_word(gp->pdev, PCI_STATUS,
564 printk(KERN_ERR "%s: Read PCI cfg space status [%04x]\n",
565 dev->name, pci_cfg_stat);
566 if (pci_cfg_stat & PCI_STATUS_PARITY)
567 printk(KERN_ERR "%s: PCI parity error detected.\n",
569 if (pci_cfg_stat & PCI_STATUS_SIG_TARGET_ABORT)
570 printk(KERN_ERR "%s: PCI target abort.\n",
572 if (pci_cfg_stat & PCI_STATUS_REC_TARGET_ABORT)
573 printk(KERN_ERR "%s: PCI master acks target abort.\n",
575 if (pci_cfg_stat & PCI_STATUS_REC_MASTER_ABORT)
576 printk(KERN_ERR "%s: PCI master abort.\n",
578 if (pci_cfg_stat & PCI_STATUS_SIG_SYSTEM_ERROR)
579 printk(KERN_ERR "%s: PCI system error SERR#.\n",
581 if (pci_cfg_stat & PCI_STATUS_DETECTED_PARITY)
582 printk(KERN_ERR "%s: PCI parity error.\n",
585 /* Write the error bits back to clear them. */
586 pci_cfg_stat &= (PCI_STATUS_PARITY |
587 PCI_STATUS_SIG_TARGET_ABORT |
588 PCI_STATUS_REC_TARGET_ABORT |
589 PCI_STATUS_REC_MASTER_ABORT |
590 PCI_STATUS_SIG_SYSTEM_ERROR |
591 PCI_STATUS_DETECTED_PARITY);
592 pci_write_config_word(gp->pdev,
593 PCI_STATUS, pci_cfg_stat);
596 /* For all PCI errors, we should reset the chip. */
600 /* All non-normal interrupt conditions get serviced here.
601 * Returns non-zero if we should just exit the interrupt
602 * handler right now (ie. if we reset the card which invalidates
603 * all of the other original irq status bits).
605 static int gem_abnormal_irq(struct net_device *dev, struct gem *gp, u32 gem_status)
607 if (gem_status & GREG_STAT_RXNOBUF) {
608 /* Frame arrived, no free RX buffers available. */
609 if (netif_msg_rx_err(gp))
610 printk(KERN_DEBUG "%s: no buffer for rx frame\n",
612 gp->net_stats.rx_dropped++;
615 if (gem_status & GREG_STAT_RXTAGERR) {
616 /* corrupt RX tag framing */
617 if (netif_msg_rx_err(gp))
618 printk(KERN_DEBUG "%s: corrupt rx tag framing\n",
620 gp->net_stats.rx_errors++;
625 if (gem_status & GREG_STAT_PCS) {
626 if (gem_pcs_interrupt(dev, gp, gem_status))
630 if (gem_status & GREG_STAT_TXMAC) {
631 if (gem_txmac_interrupt(dev, gp, gem_status))
635 if (gem_status & GREG_STAT_RXMAC) {
636 if (gem_rxmac_interrupt(dev, gp, gem_status))
640 if (gem_status & GREG_STAT_MAC) {
641 if (gem_mac_interrupt(dev, gp, gem_status))
645 if (gem_status & GREG_STAT_MIF) {
646 if (gem_mif_interrupt(dev, gp, gem_status))
650 if (gem_status & GREG_STAT_PCIERR) {
651 if (gem_pci_interrupt(dev, gp, gem_status))
658 gp->reset_task_pending = 1;
659 schedule_work(&gp->reset_task);
664 static __inline__ void gem_tx(struct net_device *dev, struct gem *gp, u32 gem_status)
668 if (netif_msg_intr(gp))
669 printk(KERN_DEBUG "%s: tx interrupt, gem_status: 0x%x\n",
670 gp->dev->name, gem_status);
673 limit = ((gem_status & GREG_STAT_TXNR) >> GREG_STAT_TXNR_SHIFT);
674 while (entry != limit) {
681 if (netif_msg_tx_done(gp))
682 printk(KERN_DEBUG "%s: tx done, slot %d\n",
683 gp->dev->name, entry);
684 skb = gp->tx_skbs[entry];
685 if (skb_shinfo(skb)->nr_frags) {
686 int last = entry + skb_shinfo(skb)->nr_frags;
690 last &= (TX_RING_SIZE - 1);
692 walk = NEXT_TX(walk);
701 gp->tx_skbs[entry] = NULL;
702 gp->net_stats.tx_bytes += skb->len;
704 for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
705 txd = &gp->init_block->txd[entry];
707 dma_addr = le64_to_cpu(txd->buffer);
708 dma_len = le64_to_cpu(txd->control_word) & TXDCTRL_BUFSZ;
710 pci_unmap_page(gp->pdev, dma_addr, dma_len, PCI_DMA_TODEVICE);
711 entry = NEXT_TX(entry);
714 gp->net_stats.tx_packets++;
715 dev_kfree_skb_irq(skb);
719 if (netif_queue_stopped(dev) &&
720 TX_BUFFS_AVAIL(gp) > (MAX_SKB_FRAGS + 1))
721 netif_wake_queue(dev);
724 static __inline__ void gem_post_rxds(struct gem *gp, int limit)
726 int cluster_start, curr, count, kick;
728 cluster_start = curr = (gp->rx_new & ~(4 - 1));
732 while (curr != limit) {
733 curr = NEXT_RX(curr);
735 struct gem_rxd *rxd =
736 &gp->init_block->rxd[cluster_start];
738 rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
740 cluster_start = NEXT_RX(cluster_start);
741 if (cluster_start == curr)
750 writel(kick, gp->regs + RXDMA_KICK);
754 static int gem_rx(struct gem *gp, int work_to_do)
756 int entry, drops, work_done = 0;
759 if (netif_msg_rx_status(gp))
760 printk(KERN_DEBUG "%s: rx interrupt, done: %d, rx_new: %d\n",
761 gp->dev->name, readl(gp->regs + RXDMA_DONE), gp->rx_new);
765 done = readl(gp->regs + RXDMA_DONE);
767 struct gem_rxd *rxd = &gp->init_block->rxd[entry];
769 u64 status = cpu_to_le64(rxd->status_word);
773 if ((status & RXDCTRL_OWN) != 0)
776 if (work_done >= RX_RING_SIZE || work_done >= work_to_do)
779 /* When writing back RX descriptor, GEM writes status
780 * then buffer address, possibly in seperate transactions.
781 * If we don't wait for the chip to write both, we could
782 * post a new buffer to this descriptor then have GEM spam
783 * on the buffer address. We sync on the RX completion
784 * register to prevent this from happening.
787 done = readl(gp->regs + RXDMA_DONE);
792 /* We can now account for the work we're about to do */
795 skb = gp->rx_skbs[entry];
797 len = (status & RXDCTRL_BUFSZ) >> 16;
798 if ((len < ETH_ZLEN) || (status & RXDCTRL_BAD)) {
799 gp->net_stats.rx_errors++;
801 gp->net_stats.rx_length_errors++;
802 if (len & RXDCTRL_BAD)
803 gp->net_stats.rx_crc_errors++;
805 /* We'll just return it to GEM. */
807 gp->net_stats.rx_dropped++;
811 dma_addr = cpu_to_le64(rxd->buffer);
812 if (len > RX_COPY_THRESHOLD) {
813 struct sk_buff *new_skb;
815 new_skb = gem_alloc_skb(RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC);
816 if (new_skb == NULL) {
820 pci_unmap_page(gp->pdev, dma_addr,
821 RX_BUF_ALLOC_SIZE(gp),
823 gp->rx_skbs[entry] = new_skb;
824 new_skb->dev = gp->dev;
825 skb_put(new_skb, (gp->rx_buf_sz + RX_OFFSET));
826 rxd->buffer = cpu_to_le64(pci_map_page(gp->pdev,
827 virt_to_page(new_skb->data),
828 offset_in_page(new_skb->data),
829 RX_BUF_ALLOC_SIZE(gp),
830 PCI_DMA_FROMDEVICE));
831 skb_reserve(new_skb, RX_OFFSET);
833 /* Trim the original skb for the netif. */
836 struct sk_buff *copy_skb = dev_alloc_skb(len + 2);
838 if (copy_skb == NULL) {
843 copy_skb->dev = gp->dev;
844 skb_reserve(copy_skb, 2);
845 skb_put(copy_skb, len);
846 pci_dma_sync_single_for_cpu(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
847 memcpy(copy_skb->data, skb->data, len);
848 pci_dma_sync_single_for_device(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
850 /* We'll reuse the original ring buffer. */
854 skb->csum = ntohs((status & RXDCTRL_TCPCSUM) ^ 0xffff);
855 skb->ip_summed = CHECKSUM_HW;
856 skb->protocol = eth_type_trans(skb, gp->dev);
858 netif_receive_skb(skb);
860 gp->net_stats.rx_packets++;
861 gp->net_stats.rx_bytes += len;
862 gp->dev->last_rx = jiffies;
865 entry = NEXT_RX(entry);
868 gem_post_rxds(gp, entry);
873 printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n",
879 static int gem_poll(struct net_device *dev, int *budget)
881 struct gem *gp = dev->priv;
885 * NAPI locking nightmare: See comment at head of driver
887 spin_lock_irqsave(&gp->lock, flags);
890 int work_to_do, work_done;
892 /* Handle anomalies */
893 if (gp->status & GREG_STAT_ABNORMAL) {
894 if (gem_abnormal_irq(dev, gp, gp->status))
898 /* Run TX completion thread */
899 spin_lock(&gp->tx_lock);
900 gem_tx(dev, gp, gp->status);
901 spin_unlock(&gp->tx_lock);
903 spin_unlock_irqrestore(&gp->lock, flags);
905 /* Run RX thread. We don't use any locking here,
906 * code willing to do bad things - like cleaning the
907 * rx ring - must call netif_poll_disable(), which
908 * schedule_timeout()'s if polling is already disabled.
910 work_to_do = min(*budget, dev->quota);
912 work_done = gem_rx(gp, work_to_do);
914 *budget -= work_done;
915 dev->quota -= work_done;
917 if (work_done >= work_to_do)
920 spin_lock_irqsave(&gp->lock, flags);
922 gp->status = readl(gp->regs + GREG_STAT);
923 } while (gp->status & GREG_STAT_NAPI);
925 __netif_rx_complete(dev);
928 spin_unlock_irqrestore(&gp->lock, flags);
932 static irqreturn_t gem_interrupt(int irq, void *dev_id, struct pt_regs *regs)
934 struct net_device *dev = dev_id;
935 struct gem *gp = dev->priv;
938 /* Swallow interrupts when shutting the chip down, though
939 * that shouldn't happen, we should have done free_irq() at
945 spin_lock_irqsave(&gp->lock, flags);
947 if (netif_rx_schedule_prep(dev)) {
948 u32 gem_status = readl(gp->regs + GREG_STAT);
950 if (gem_status == 0) {
951 spin_unlock_irqrestore(&gp->lock, flags);
954 gp->status = gem_status;
955 gem_disable_ints(gp);
956 __netif_rx_schedule(dev);
959 spin_unlock_irqrestore(&gp->lock, flags);
961 /* If polling was disabled at the time we received that
962 * interrupt, we may return IRQ_HANDLED here while we
963 * should return IRQ_NONE. No big deal...
968 #ifdef CONFIG_NET_POLL_CONTROLLER
969 static void gem_poll_controller(struct net_device *dev)
971 /* gem_interrupt is safe to reentrance so no need
972 * to disable_irq here.
974 gem_interrupt(dev->irq, dev, NULL);
978 static void gem_tx_timeout(struct net_device *dev)
980 struct gem *gp = dev->priv;
982 printk(KERN_ERR "%s: transmit timed out, resetting\n", dev->name);
984 printk("%s: hrm.. hw not running !\n", dev->name);
987 printk(KERN_ERR "%s: TX_STATE[%08x:%08x:%08x]\n",
989 readl(gp->regs + TXDMA_CFG),
990 readl(gp->regs + MAC_TXSTAT),
991 readl(gp->regs + MAC_TXCFG));
992 printk(KERN_ERR "%s: RX_STATE[%08x:%08x:%08x]\n",
994 readl(gp->regs + RXDMA_CFG),
995 readl(gp->regs + MAC_RXSTAT),
996 readl(gp->regs + MAC_RXCFG));
998 spin_lock_irq(&gp->lock);
999 spin_lock(&gp->tx_lock);
1001 gp->reset_task_pending = 1;
1002 schedule_work(&gp->reset_task);
1004 spin_unlock(&gp->tx_lock);
1005 spin_unlock_irq(&gp->lock);
1008 static __inline__ int gem_intme(int entry)
1010 /* Algorithm: IRQ every 1/2 of descriptors. */
1011 if (!(entry & ((TX_RING_SIZE>>1)-1)))
1017 static int gem_start_xmit(struct sk_buff *skb, struct net_device *dev)
1019 struct gem *gp = dev->priv;
1022 unsigned long flags;
1025 if (skb->ip_summed == CHECKSUM_HW) {
1026 u64 csum_start_off, csum_stuff_off;
1028 csum_start_off = (u64) (skb->h.raw - skb->data);
1029 csum_stuff_off = (u64) ((skb->h.raw + skb->csum) - skb->data);
1031 ctrl = (TXDCTRL_CENAB |
1032 (csum_start_off << 15) |
1033 (csum_stuff_off << 21));
1036 local_irq_save(flags);
1037 if (!spin_trylock(&gp->tx_lock)) {
1038 /* Tell upper layer to requeue */
1039 local_irq_restore(flags);
1040 return NETDEV_TX_LOCKED;
1042 /* We raced with gem_do_stop() */
1044 spin_unlock_irqrestore(&gp->tx_lock, flags);
1045 return NETDEV_TX_BUSY;
1048 /* This is a hard error, log it. */
1049 if (TX_BUFFS_AVAIL(gp) <= (skb_shinfo(skb)->nr_frags + 1)) {
1050 netif_stop_queue(dev);
1051 spin_unlock_irqrestore(&gp->tx_lock, flags);
1052 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
1054 return NETDEV_TX_BUSY;
1058 gp->tx_skbs[entry] = skb;
1060 if (skb_shinfo(skb)->nr_frags == 0) {
1061 struct gem_txd *txd = &gp->init_block->txd[entry];
1066 mapping = pci_map_page(gp->pdev,
1067 virt_to_page(skb->data),
1068 offset_in_page(skb->data),
1069 len, PCI_DMA_TODEVICE);
1070 ctrl |= TXDCTRL_SOF | TXDCTRL_EOF | len;
1071 if (gem_intme(entry))
1072 ctrl |= TXDCTRL_INTME;
1073 txd->buffer = cpu_to_le64(mapping);
1075 txd->control_word = cpu_to_le64(ctrl);
1076 entry = NEXT_TX(entry);
1078 struct gem_txd *txd;
1081 dma_addr_t first_mapping;
1082 int frag, first_entry = entry;
1085 if (gem_intme(entry))
1086 intme |= TXDCTRL_INTME;
1088 /* We must give this initial chunk to the device last.
1089 * Otherwise we could race with the device.
1091 first_len = skb_headlen(skb);
1092 first_mapping = pci_map_page(gp->pdev, virt_to_page(skb->data),
1093 offset_in_page(skb->data),
1094 first_len, PCI_DMA_TODEVICE);
1095 entry = NEXT_TX(entry);
1097 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
1098 skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
1103 len = this_frag->size;
1104 mapping = pci_map_page(gp->pdev,
1106 this_frag->page_offset,
1107 len, PCI_DMA_TODEVICE);
1109 if (frag == skb_shinfo(skb)->nr_frags - 1)
1110 this_ctrl |= TXDCTRL_EOF;
1112 txd = &gp->init_block->txd[entry];
1113 txd->buffer = cpu_to_le64(mapping);
1115 txd->control_word = cpu_to_le64(this_ctrl | len);
1117 if (gem_intme(entry))
1118 intme |= TXDCTRL_INTME;
1120 entry = NEXT_TX(entry);
1122 txd = &gp->init_block->txd[first_entry];
1123 txd->buffer = cpu_to_le64(first_mapping);
1126 cpu_to_le64(ctrl | TXDCTRL_SOF | intme | first_len);
1130 if (TX_BUFFS_AVAIL(gp) <= (MAX_SKB_FRAGS + 1))
1131 netif_stop_queue(dev);
1133 if (netif_msg_tx_queued(gp))
1134 printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
1135 dev->name, entry, skb->len);
1137 writel(gp->tx_new, gp->regs + TXDMA_KICK);
1138 spin_unlock_irqrestore(&gp->tx_lock, flags);
1140 dev->trans_start = jiffies;
1142 return NETDEV_TX_OK;
1145 #define STOP_TRIES 32
1147 /* Must be invoked under gp->lock and gp->tx_lock. */
1148 static void gem_reset(struct gem *gp)
1153 /* Make sure we won't get any more interrupts */
1154 writel(0xffffffff, gp->regs + GREG_IMASK);
1156 /* Reset the chip */
1157 writel(gp->swrst_base | GREG_SWRST_TXRST | GREG_SWRST_RXRST,
1158 gp->regs + GREG_SWRST);
1164 val = readl(gp->regs + GREG_SWRST);
1167 } while (val & (GREG_SWRST_TXRST | GREG_SWRST_RXRST));
1170 printk(KERN_ERR "%s: SW reset is ghetto.\n", gp->dev->name);
1173 /* Must be invoked under gp->lock and gp->tx_lock. */
1174 static void gem_start_dma(struct gem *gp)
1178 /* We are ready to rock, turn everything on. */
1179 val = readl(gp->regs + TXDMA_CFG);
1180 writel(val | TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG);
1181 val = readl(gp->regs + RXDMA_CFG);
1182 writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
1183 val = readl(gp->regs + MAC_TXCFG);
1184 writel(val | MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG);
1185 val = readl(gp->regs + MAC_RXCFG);
1186 writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
1188 (void) readl(gp->regs + MAC_RXCFG);
1191 gem_enable_ints(gp);
1193 writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
1196 /* Must be invoked under gp->lock and gp->tx_lock. DMA won't be
1197 * actually stopped before about 4ms tho ...
1199 static void gem_stop_dma(struct gem *gp)
1203 /* We are done rocking, turn everything off. */
1204 val = readl(gp->regs + TXDMA_CFG);
1205 writel(val & ~TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG);
1206 val = readl(gp->regs + RXDMA_CFG);
1207 writel(val & ~RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
1208 val = readl(gp->regs + MAC_TXCFG);
1209 writel(val & ~MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG);
1210 val = readl(gp->regs + MAC_RXCFG);
1211 writel(val & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
1213 (void) readl(gp->regs + MAC_RXCFG);
1215 /* Need to wait a bit ... done by the caller */
1219 /* Must be invoked under gp->lock and gp->tx_lock. */
1220 // XXX dbl check what that function should do when called on PCS PHY
1221 static void gem_begin_auto_negotiation(struct gem *gp, struct ethtool_cmd *ep)
1223 u32 advertise, features;
1228 if (gp->phy_type != phy_mii_mdio0 &&
1229 gp->phy_type != phy_mii_mdio1)
1232 /* Setup advertise */
1233 if (found_mii_phy(gp))
1234 features = gp->phy_mii.def->features;
1238 advertise = features & ADVERTISE_MASK;
1239 if (gp->phy_mii.advertising != 0)
1240 advertise &= gp->phy_mii.advertising;
1242 autoneg = gp->want_autoneg;
1243 speed = gp->phy_mii.speed;
1244 duplex = gp->phy_mii.duplex;
1246 /* Setup link parameters */
1249 if (ep->autoneg == AUTONEG_ENABLE) {
1250 advertise = ep->advertising;
1255 duplex = ep->duplex;
1259 /* Sanitize settings based on PHY capabilities */
1260 if ((features & SUPPORTED_Autoneg) == 0)
1262 if (speed == SPEED_1000 &&
1263 !(features & (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)))
1265 if (speed == SPEED_100 &&
1266 !(features & (SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full)))
1268 if (duplex == DUPLEX_FULL &&
1269 !(features & (SUPPORTED_1000baseT_Full |
1270 SUPPORTED_100baseT_Full |
1271 SUPPORTED_10baseT_Full)))
1272 duplex = DUPLEX_HALF;
1276 /* If we are asleep, we don't try to actually setup the PHY, we
1277 * just store the settings
1280 gp->phy_mii.autoneg = gp->want_autoneg = autoneg;
1281 gp->phy_mii.speed = speed;
1282 gp->phy_mii.duplex = duplex;
1286 /* Configure PHY & start aneg */
1287 gp->want_autoneg = autoneg;
1289 if (found_mii_phy(gp))
1290 gp->phy_mii.def->ops->setup_aneg(&gp->phy_mii, advertise);
1291 gp->lstate = link_aneg;
1293 if (found_mii_phy(gp))
1294 gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, speed, duplex);
1295 gp->lstate = link_force_ok;
1299 gp->timer_ticks = 0;
1300 mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
1303 /* A link-up condition has occurred, initialize and enable the
1306 * Must be invoked under gp->lock and gp->tx_lock.
1308 static int gem_set_link_modes(struct gem *gp)
1311 int full_duplex, speed, pause;
1317 if (found_mii_phy(gp)) {
1318 if (gp->phy_mii.def->ops->read_link(&gp->phy_mii))
1320 full_duplex = (gp->phy_mii.duplex == DUPLEX_FULL);
1321 speed = gp->phy_mii.speed;
1322 pause = gp->phy_mii.pause;
1323 } else if (gp->phy_type == phy_serialink ||
1324 gp->phy_type == phy_serdes) {
1325 u32 pcs_lpa = readl(gp->regs + PCS_MIILP);
1327 if (pcs_lpa & PCS_MIIADV_FD)
1332 if (netif_msg_link(gp))
1333 printk(KERN_INFO "%s: Link is up at %d Mbps, %s-duplex.\n",
1334 gp->dev->name, speed, (full_duplex ? "full" : "half"));
1339 val = (MAC_TXCFG_EIPG0 | MAC_TXCFG_NGU);
1341 val |= (MAC_TXCFG_ICS | MAC_TXCFG_ICOLL);
1343 /* MAC_TXCFG_NBO must be zero. */
1345 writel(val, gp->regs + MAC_TXCFG);
1347 val = (MAC_XIFCFG_OE | MAC_XIFCFG_LLED);
1349 (gp->phy_type == phy_mii_mdio0 ||
1350 gp->phy_type == phy_mii_mdio1)) {
1351 val |= MAC_XIFCFG_DISE;
1352 } else if (full_duplex) {
1353 val |= MAC_XIFCFG_FLED;
1356 if (speed == SPEED_1000)
1357 val |= (MAC_XIFCFG_GMII);
1359 writel(val, gp->regs + MAC_XIFCFG);
1361 /* If gigabit and half-duplex, enable carrier extension
1362 * mode. Else, disable it.
1364 if (speed == SPEED_1000 && !full_duplex) {
1365 val = readl(gp->regs + MAC_TXCFG);
1366 writel(val | MAC_TXCFG_TCE, gp->regs + MAC_TXCFG);
1368 val = readl(gp->regs + MAC_RXCFG);
1369 writel(val | MAC_RXCFG_RCE, gp->regs + MAC_RXCFG);
1371 val = readl(gp->regs + MAC_TXCFG);
1372 writel(val & ~MAC_TXCFG_TCE, gp->regs + MAC_TXCFG);
1374 val = readl(gp->regs + MAC_RXCFG);
1375 writel(val & ~MAC_RXCFG_RCE, gp->regs + MAC_RXCFG);
1378 if (gp->phy_type == phy_serialink ||
1379 gp->phy_type == phy_serdes) {
1380 u32 pcs_lpa = readl(gp->regs + PCS_MIILP);
1382 if (pcs_lpa & (PCS_MIIADV_SP | PCS_MIIADV_AP))
1386 if (netif_msg_link(gp)) {
1388 printk(KERN_INFO "%s: Pause is enabled "
1389 "(rxfifo: %d off: %d on: %d)\n",
1395 printk(KERN_INFO "%s: Pause is disabled\n",
1401 writel(512, gp->regs + MAC_STIME);
1403 writel(64, gp->regs + MAC_STIME);
1404 val = readl(gp->regs + MAC_MCCFG);
1406 val |= (MAC_MCCFG_SPE | MAC_MCCFG_RPE);
1408 val &= ~(MAC_MCCFG_SPE | MAC_MCCFG_RPE);
1409 writel(val, gp->regs + MAC_MCCFG);
1416 /* Must be invoked under gp->lock and gp->tx_lock. */
1417 static int gem_mdio_link_not_up(struct gem *gp)
1419 switch (gp->lstate) {
1420 case link_force_ret:
1421 if (netif_msg_link(gp))
1422 printk(KERN_INFO "%s: Autoneg failed again, keeping"
1423 " forced mode\n", gp->dev->name);
1424 gp->phy_mii.def->ops->setup_forced(&gp->phy_mii,
1425 gp->last_forced_speed, DUPLEX_HALF);
1426 gp->timer_ticks = 5;
1427 gp->lstate = link_force_ok;
1430 /* We try forced modes after a failed aneg only on PHYs that don't
1431 * have "magic_aneg" bit set, which means they internally do the
1432 * while forced-mode thingy. On these, we just restart aneg
1434 if (gp->phy_mii.def->magic_aneg)
1436 if (netif_msg_link(gp))
1437 printk(KERN_INFO "%s: switching to forced 100bt\n",
1439 /* Try forced modes. */
1440 gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, SPEED_100,
1442 gp->timer_ticks = 5;
1443 gp->lstate = link_force_try;
1445 case link_force_try:
1446 /* Downgrade from 100 to 10 Mbps if necessary.
1447 * If already at 10Mbps, warn user about the
1448 * situation every 10 ticks.
1450 if (gp->phy_mii.speed == SPEED_100) {
1451 gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, SPEED_10,
1453 gp->timer_ticks = 5;
1454 if (netif_msg_link(gp))
1455 printk(KERN_INFO "%s: switching to forced 10bt\n",
1465 static void gem_link_timer(unsigned long data)
1467 struct gem *gp = (struct gem *) data;
1468 int restart_aneg = 0;
1473 spin_lock_irq(&gp->lock);
1474 spin_lock(&gp->tx_lock);
1477 /* If the reset task is still pending, we just
1478 * reschedule the link timer
1480 if (gp->reset_task_pending)
1483 if (gp->phy_type == phy_serialink ||
1484 gp->phy_type == phy_serdes) {
1485 u32 val = readl(gp->regs + PCS_MIISTAT);
1487 if (!(val & PCS_MIISTAT_LS))
1488 val = readl(gp->regs + PCS_MIISTAT);
1490 if ((val & PCS_MIISTAT_LS) != 0) {
1491 gp->lstate = link_up;
1492 netif_carrier_on(gp->dev);
1493 (void)gem_set_link_modes(gp);
1497 if (found_mii_phy(gp) && gp->phy_mii.def->ops->poll_link(&gp->phy_mii)) {
1498 /* Ok, here we got a link. If we had it due to a forced
1499 * fallback, and we were configured for autoneg, we do
1500 * retry a short autoneg pass. If you know your hub is
1501 * broken, use ethtool ;)
1503 if (gp->lstate == link_force_try && gp->want_autoneg) {
1504 gp->lstate = link_force_ret;
1505 gp->last_forced_speed = gp->phy_mii.speed;
1506 gp->timer_ticks = 5;
1507 if (netif_msg_link(gp))
1508 printk(KERN_INFO "%s: Got link after fallback, retrying"
1509 " autoneg once...\n", gp->dev->name);
1510 gp->phy_mii.def->ops->setup_aneg(&gp->phy_mii, gp->phy_mii.advertising);
1511 } else if (gp->lstate != link_up) {
1512 gp->lstate = link_up;
1513 netif_carrier_on(gp->dev);
1514 if (gem_set_link_modes(gp))
1518 /* If the link was previously up, we restart the
1521 if (gp->lstate == link_up) {
1522 gp->lstate = link_down;
1523 if (netif_msg_link(gp))
1524 printk(KERN_INFO "%s: Link down\n",
1526 netif_carrier_off(gp->dev);
1527 gp->reset_task_pending = 1;
1528 schedule_work(&gp->reset_task);
1530 } else if (++gp->timer_ticks > 10) {
1531 if (found_mii_phy(gp))
1532 restart_aneg = gem_mdio_link_not_up(gp);
1538 gem_begin_auto_negotiation(gp, NULL);
1542 mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
1545 spin_unlock(&gp->tx_lock);
1546 spin_unlock_irq(&gp->lock);
1549 /* Must be invoked under gp->lock and gp->tx_lock. */
1550 static void gem_clean_rings(struct gem *gp)
1552 struct gem_init_block *gb = gp->init_block;
1553 struct sk_buff *skb;
1555 dma_addr_t dma_addr;
1557 for (i = 0; i < RX_RING_SIZE; i++) {
1558 struct gem_rxd *rxd;
1561 if (gp->rx_skbs[i] != NULL) {
1562 skb = gp->rx_skbs[i];
1563 dma_addr = le64_to_cpu(rxd->buffer);
1564 pci_unmap_page(gp->pdev, dma_addr,
1565 RX_BUF_ALLOC_SIZE(gp),
1566 PCI_DMA_FROMDEVICE);
1567 dev_kfree_skb_any(skb);
1568 gp->rx_skbs[i] = NULL;
1570 rxd->status_word = 0;
1575 for (i = 0; i < TX_RING_SIZE; i++) {
1576 if (gp->tx_skbs[i] != NULL) {
1577 struct gem_txd *txd;
1580 skb = gp->tx_skbs[i];
1581 gp->tx_skbs[i] = NULL;
1583 for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
1584 int ent = i & (TX_RING_SIZE - 1);
1586 txd = &gb->txd[ent];
1587 dma_addr = le64_to_cpu(txd->buffer);
1588 pci_unmap_page(gp->pdev, dma_addr,
1589 le64_to_cpu(txd->control_word) &
1590 TXDCTRL_BUFSZ, PCI_DMA_TODEVICE);
1592 if (frag != skb_shinfo(skb)->nr_frags)
1595 dev_kfree_skb_any(skb);
1600 /* Must be invoked under gp->lock and gp->tx_lock. */
1601 static void gem_init_rings(struct gem *gp)
1603 struct gem_init_block *gb = gp->init_block;
1604 struct net_device *dev = gp->dev;
1606 dma_addr_t dma_addr;
1608 gp->rx_new = gp->rx_old = gp->tx_new = gp->tx_old = 0;
1610 gem_clean_rings(gp);
1612 gp->rx_buf_sz = max(dev->mtu + ETH_HLEN + VLAN_HLEN,
1613 (unsigned)VLAN_ETH_FRAME_LEN);
1615 for (i = 0; i < RX_RING_SIZE; i++) {
1616 struct sk_buff *skb;
1617 struct gem_rxd *rxd = &gb->rxd[i];
1619 skb = gem_alloc_skb(RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC);
1622 rxd->status_word = 0;
1626 gp->rx_skbs[i] = skb;
1628 skb_put(skb, (gp->rx_buf_sz + RX_OFFSET));
1629 dma_addr = pci_map_page(gp->pdev,
1630 virt_to_page(skb->data),
1631 offset_in_page(skb->data),
1632 RX_BUF_ALLOC_SIZE(gp),
1633 PCI_DMA_FROMDEVICE);
1634 rxd->buffer = cpu_to_le64(dma_addr);
1636 rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
1637 skb_reserve(skb, RX_OFFSET);
1640 for (i = 0; i < TX_RING_SIZE; i++) {
1641 struct gem_txd *txd = &gb->txd[i];
1643 txd->control_word = 0;
1650 /* Init PHY interface and start link poll state machine */
1651 static void gem_init_phy(struct gem *gp)
1655 /* Revert MIF CFG setting done on stop_phy */
1656 mifcfg = readl(gp->regs + MIF_CFG);
1657 mifcfg &= ~MIF_CFG_BBMODE;
1658 writel(mifcfg, gp->regs + MIF_CFG);
1660 if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) {
1663 /* Those delay sucks, the HW seem to love them though, I'll
1664 * serisouly consider breaking some locks here to be able
1665 * to schedule instead
1667 for (i = 0; i < 3; i++) {
1668 #ifdef CONFIG_PPC_PMAC
1669 pmac_call_feature(PMAC_FTR_GMAC_PHY_RESET, gp->of_node, 0, 0);
1672 /* Some PHYs used by apple have problem getting back to us,
1673 * we do an additional reset here
1675 phy_write(gp, MII_BMCR, BMCR_RESET);
1677 if (phy_read(gp, MII_BMCR) != 0xffff)
1680 printk(KERN_WARNING "%s: GMAC PHY not responding !\n",
1685 if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
1686 gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) {
1689 /* Init datapath mode register. */
1690 if (gp->phy_type == phy_mii_mdio0 ||
1691 gp->phy_type == phy_mii_mdio1) {
1692 val = PCS_DMODE_MGM;
1693 } else if (gp->phy_type == phy_serialink) {
1694 val = PCS_DMODE_SM | PCS_DMODE_GMOE;
1696 val = PCS_DMODE_ESM;
1699 writel(val, gp->regs + PCS_DMODE);
1702 if (gp->phy_type == phy_mii_mdio0 ||
1703 gp->phy_type == phy_mii_mdio1) {
1704 // XXX check for errors
1705 mii_phy_probe(&gp->phy_mii, gp->mii_phy_addr);
1708 if (gp->phy_mii.def && gp->phy_mii.def->ops->init)
1709 gp->phy_mii.def->ops->init(&gp->phy_mii);
1714 /* Reset PCS unit. */
1715 val = readl(gp->regs + PCS_MIICTRL);
1716 val |= PCS_MIICTRL_RST;
1717 writeb(val, gp->regs + PCS_MIICTRL);
1720 while (readl(gp->regs + PCS_MIICTRL) & PCS_MIICTRL_RST) {
1726 printk(KERN_WARNING "%s: PCS reset bit would not clear.\n",
1729 /* Make sure PCS is disabled while changing advertisement
1732 val = readl(gp->regs + PCS_CFG);
1733 val &= ~(PCS_CFG_ENABLE | PCS_CFG_TO);
1734 writel(val, gp->regs + PCS_CFG);
1736 /* Advertise all capabilities except assymetric
1739 val = readl(gp->regs + PCS_MIIADV);
1740 val |= (PCS_MIIADV_FD | PCS_MIIADV_HD |
1741 PCS_MIIADV_SP | PCS_MIIADV_AP);
1742 writel(val, gp->regs + PCS_MIIADV);
1744 /* Enable and restart auto-negotiation, disable wrapback/loopback,
1745 * and re-enable PCS.
1747 val = readl(gp->regs + PCS_MIICTRL);
1748 val |= (PCS_MIICTRL_RAN | PCS_MIICTRL_ANE);
1749 val &= ~PCS_MIICTRL_WB;
1750 writel(val, gp->regs + PCS_MIICTRL);
1752 val = readl(gp->regs + PCS_CFG);
1753 val |= PCS_CFG_ENABLE;
1754 writel(val, gp->regs + PCS_CFG);
1756 /* Make sure serialink loopback is off. The meaning
1757 * of this bit is logically inverted based upon whether
1758 * you are in Serialink or SERDES mode.
1760 val = readl(gp->regs + PCS_SCTRL);
1761 if (gp->phy_type == phy_serialink)
1762 val &= ~PCS_SCTRL_LOOP;
1764 val |= PCS_SCTRL_LOOP;
1765 writel(val, gp->regs + PCS_SCTRL);
1768 /* Default aneg parameters */
1769 gp->timer_ticks = 0;
1770 gp->lstate = link_down;
1771 netif_carrier_off(gp->dev);
1773 /* Can I advertise gigabit here ? I'd need BCM PHY docs... */
1774 spin_lock_irq(&gp->lock);
1775 gem_begin_auto_negotiation(gp, NULL);
1776 spin_unlock_irq(&gp->lock);
1779 /* Must be invoked under gp->lock and gp->tx_lock. */
1780 static void gem_init_dma(struct gem *gp)
1782 u64 desc_dma = (u64) gp->gblock_dvma;
1785 val = (TXDMA_CFG_BASE | (0x7ff << 10) | TXDMA_CFG_PMODE);
1786 writel(val, gp->regs + TXDMA_CFG);
1788 writel(desc_dma >> 32, gp->regs + TXDMA_DBHI);
1789 writel(desc_dma & 0xffffffff, gp->regs + TXDMA_DBLOW);
1790 desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd));
1792 writel(0, gp->regs + TXDMA_KICK);
1794 val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) |
1795 ((14 / 2) << 13) | RXDMA_CFG_FTHRESH_128);
1796 writel(val, gp->regs + RXDMA_CFG);
1798 writel(desc_dma >> 32, gp->regs + RXDMA_DBHI);
1799 writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW);
1801 writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
1803 val = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF);
1804 val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON);
1805 writel(val, gp->regs + RXDMA_PTHRESH);
1807 if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN)
1808 writel(((5 & RXDMA_BLANK_IPKTS) |
1809 ((8 << 12) & RXDMA_BLANK_ITIME)),
1810 gp->regs + RXDMA_BLANK);
1812 writel(((5 & RXDMA_BLANK_IPKTS) |
1813 ((4 << 12) & RXDMA_BLANK_ITIME)),
1814 gp->regs + RXDMA_BLANK);
1817 /* Must be invoked under gp->lock and gp->tx_lock. */
1818 static u32 gem_setup_multicast(struct gem *gp)
1823 if ((gp->dev->flags & IFF_ALLMULTI) ||
1824 (gp->dev->mc_count > 256)) {
1825 for (i=0; i<16; i++)
1826 writel(0xffff, gp->regs + MAC_HASH0 + (i << 2));
1827 rxcfg |= MAC_RXCFG_HFE;
1828 } else if (gp->dev->flags & IFF_PROMISC) {
1829 rxcfg |= MAC_RXCFG_PROM;
1833 struct dev_mc_list *dmi = gp->dev->mc_list;
1836 for (i = 0; i < 16; i++)
1839 for (i = 0; i < gp->dev->mc_count; i++) {
1840 char *addrs = dmi->dmi_addr;
1847 crc = ether_crc_le(6, addrs);
1849 hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
1851 for (i=0; i<16; i++)
1852 writel(hash_table[i], gp->regs + MAC_HASH0 + (i << 2));
1853 rxcfg |= MAC_RXCFG_HFE;
1859 /* Must be invoked under gp->lock and gp->tx_lock. */
1860 static void gem_init_mac(struct gem *gp)
1862 unsigned char *e = &gp->dev->dev_addr[0];
1864 writel(0x1bf0, gp->regs + MAC_SNDPAUSE);
1866 writel(0x00, gp->regs + MAC_IPG0);
1867 writel(0x08, gp->regs + MAC_IPG1);
1868 writel(0x04, gp->regs + MAC_IPG2);
1869 writel(0x40, gp->regs + MAC_STIME);
1870 writel(0x40, gp->regs + MAC_MINFSZ);
1872 /* Ethernet payload + header + FCS + optional VLAN tag. */
1873 writel(0x20000000 | (gp->rx_buf_sz + 4), gp->regs + MAC_MAXFSZ);
1875 writel(0x07, gp->regs + MAC_PASIZE);
1876 writel(0x04, gp->regs + MAC_JAMSIZE);
1877 writel(0x10, gp->regs + MAC_ATTLIM);
1878 writel(0x8808, gp->regs + MAC_MCTYPE);
1880 writel((e[5] | (e[4] << 8)) & 0x3ff, gp->regs + MAC_RANDSEED);
1882 writel((e[4] << 8) | e[5], gp->regs + MAC_ADDR0);
1883 writel((e[2] << 8) | e[3], gp->regs + MAC_ADDR1);
1884 writel((e[0] << 8) | e[1], gp->regs + MAC_ADDR2);
1886 writel(0, gp->regs + MAC_ADDR3);
1887 writel(0, gp->regs + MAC_ADDR4);
1888 writel(0, gp->regs + MAC_ADDR5);
1890 writel(0x0001, gp->regs + MAC_ADDR6);
1891 writel(0xc200, gp->regs + MAC_ADDR7);
1892 writel(0x0180, gp->regs + MAC_ADDR8);
1894 writel(0, gp->regs + MAC_AFILT0);
1895 writel(0, gp->regs + MAC_AFILT1);
1896 writel(0, gp->regs + MAC_AFILT2);
1897 writel(0, gp->regs + MAC_AF21MSK);
1898 writel(0, gp->regs + MAC_AF0MSK);
1900 gp->mac_rx_cfg = gem_setup_multicast(gp);
1902 gp->mac_rx_cfg |= MAC_RXCFG_SFCS;
1904 writel(0, gp->regs + MAC_NCOLL);
1905 writel(0, gp->regs + MAC_FASUCC);
1906 writel(0, gp->regs + MAC_ECOLL);
1907 writel(0, gp->regs + MAC_LCOLL);
1908 writel(0, gp->regs + MAC_DTIMER);
1909 writel(0, gp->regs + MAC_PATMPS);
1910 writel(0, gp->regs + MAC_RFCTR);
1911 writel(0, gp->regs + MAC_LERR);
1912 writel(0, gp->regs + MAC_AERR);
1913 writel(0, gp->regs + MAC_FCSERR);
1914 writel(0, gp->regs + MAC_RXCVERR);
1916 /* Clear RX/TX/MAC/XIF config, we will set these up and enable
1917 * them once a link is established.
1919 writel(0, gp->regs + MAC_TXCFG);
1920 writel(gp->mac_rx_cfg, gp->regs + MAC_RXCFG);
1921 writel(0, gp->regs + MAC_MCCFG);
1922 writel(0, gp->regs + MAC_XIFCFG);
1924 /* Setup MAC interrupts. We want to get all of the interesting
1925 * counter expiration events, but we do not want to hear about
1926 * normal rx/tx as the DMA engine tells us that.
1928 writel(MAC_TXSTAT_XMIT, gp->regs + MAC_TXMASK);
1929 writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK);
1931 /* Don't enable even the PAUSE interrupts for now, we
1932 * make no use of those events other than to record them.
1934 writel(0xffffffff, gp->regs + MAC_MCMASK);
1936 /* Don't enable GEM's WOL in normal operations
1939 writel(0, gp->regs + WOL_WAKECSR);
1942 /* Must be invoked under gp->lock and gp->tx_lock. */
1943 static void gem_init_pause_thresholds(struct gem *gp)
1947 /* Calculate pause thresholds. Setting the OFF threshold to the
1948 * full RX fifo size effectively disables PAUSE generation which
1949 * is what we do for 10/100 only GEMs which have FIFOs too small
1950 * to make real gains from PAUSE.
1952 if (gp->rx_fifo_sz <= (2 * 1024)) {
1953 gp->rx_pause_off = gp->rx_pause_on = gp->rx_fifo_sz;
1955 int max_frame = (gp->rx_buf_sz + 4 + 64) & ~63;
1956 int off = (gp->rx_fifo_sz - (max_frame * 2));
1957 int on = off - max_frame;
1959 gp->rx_pause_off = off;
1960 gp->rx_pause_on = on;
1964 /* Configure the chip "burst" DMA mode & enable some
1965 * HW bug fixes on Apple version
1968 if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE)
1969 cfg |= GREG_CFG_RONPAULBIT | GREG_CFG_ENBUG2FIX;
1970 #if !defined(CONFIG_SPARC64) && !defined(CONFIG_ALPHA)
1971 cfg |= GREG_CFG_IBURST;
1973 cfg |= ((31 << 1) & GREG_CFG_TXDMALIM);
1974 cfg |= ((31 << 6) & GREG_CFG_RXDMALIM);
1975 writel(cfg, gp->regs + GREG_CFG);
1977 /* If Infinite Burst didn't stick, then use different
1978 * thresholds (and Apple bug fixes don't exist)
1980 if (!(readl(gp->regs + GREG_CFG) & GREG_CFG_IBURST)) {
1981 cfg = ((2 << 1) & GREG_CFG_TXDMALIM);
1982 cfg |= ((8 << 6) & GREG_CFG_RXDMALIM);
1983 writel(cfg, gp->regs + GREG_CFG);
1987 static int gem_check_invariants(struct gem *gp)
1989 struct pci_dev *pdev = gp->pdev;
1992 /* On Apple's sungem, we can't rely on registers as the chip
1993 * was been powered down by the firmware. The PHY is looked
1996 if (pdev->vendor == PCI_VENDOR_ID_APPLE) {
1997 gp->phy_type = phy_mii_mdio0;
1998 gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64;
1999 gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64;
2002 mif_cfg = readl(gp->regs + MIF_CFG);
2003 mif_cfg &= ~(MIF_CFG_PSELECT|MIF_CFG_POLL|MIF_CFG_BBMODE|MIF_CFG_MDI1);
2004 mif_cfg |= MIF_CFG_MDI0;
2005 writel(mif_cfg, gp->regs + MIF_CFG);
2006 writel(PCS_DMODE_MGM, gp->regs + PCS_DMODE);
2007 writel(MAC_XIFCFG_OE, gp->regs + MAC_XIFCFG);
2009 /* We hard-code the PHY address so we can properly bring it out of
2010 * reset later on, we can't really probe it at this point, though
2011 * that isn't an issue.
2013 if (gp->pdev->device == PCI_DEVICE_ID_APPLE_K2_GMAC)
2014 gp->mii_phy_addr = 1;
2016 gp->mii_phy_addr = 0;
2021 mif_cfg = readl(gp->regs + MIF_CFG);
2023 if (pdev->vendor == PCI_VENDOR_ID_SUN &&
2024 pdev->device == PCI_DEVICE_ID_SUN_RIO_GEM) {
2025 /* One of the MII PHYs _must_ be present
2026 * as this chip has no gigabit PHY.
2028 if ((mif_cfg & (MIF_CFG_MDI0 | MIF_CFG_MDI1)) == 0) {
2029 printk(KERN_ERR PFX "RIO GEM lacks MII phy, mif_cfg[%08x]\n",
2035 /* Determine initial PHY interface type guess. MDIO1 is the
2036 * external PHY and thus takes precedence over MDIO0.
2039 if (mif_cfg & MIF_CFG_MDI1) {
2040 gp->phy_type = phy_mii_mdio1;
2041 mif_cfg |= MIF_CFG_PSELECT;
2042 writel(mif_cfg, gp->regs + MIF_CFG);
2043 } else if (mif_cfg & MIF_CFG_MDI0) {
2044 gp->phy_type = phy_mii_mdio0;
2045 mif_cfg &= ~MIF_CFG_PSELECT;
2046 writel(mif_cfg, gp->regs + MIF_CFG);
2048 gp->phy_type = phy_serialink;
2050 if (gp->phy_type == phy_mii_mdio1 ||
2051 gp->phy_type == phy_mii_mdio0) {
2054 for (i = 0; i < 32; i++) {
2055 gp->mii_phy_addr = i;
2056 if (phy_read(gp, MII_BMCR) != 0xffff)
2060 if (pdev->device != PCI_DEVICE_ID_SUN_GEM) {
2061 printk(KERN_ERR PFX "RIO MII phy will not respond.\n");
2064 gp->phy_type = phy_serdes;
2068 /* Fetch the FIFO configurations now too. */
2069 gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64;
2070 gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64;
2072 if (pdev->vendor == PCI_VENDOR_ID_SUN) {
2073 if (pdev->device == PCI_DEVICE_ID_SUN_GEM) {
2074 if (gp->tx_fifo_sz != (9 * 1024) ||
2075 gp->rx_fifo_sz != (20 * 1024)) {
2076 printk(KERN_ERR PFX "GEM has bogus fifo sizes tx(%d) rx(%d)\n",
2077 gp->tx_fifo_sz, gp->rx_fifo_sz);
2082 if (gp->tx_fifo_sz != (2 * 1024) ||
2083 gp->rx_fifo_sz != (2 * 1024)) {
2084 printk(KERN_ERR PFX "RIO GEM has bogus fifo sizes tx(%d) rx(%d)\n",
2085 gp->tx_fifo_sz, gp->rx_fifo_sz);
2088 gp->swrst_base = (64 / 4) << GREG_SWRST_CACHE_SHIFT;
2095 /* Must be invoked under gp->lock and gp->tx_lock. */
2096 static void gem_reinit_chip(struct gem *gp)
2098 /* Reset the chip */
2101 /* Make sure ints are disabled */
2102 gem_disable_ints(gp);
2104 /* Allocate & setup ring buffers */
2107 /* Configure pause thresholds */
2108 gem_init_pause_thresholds(gp);
2110 /* Init DMA & MAC engines */
2116 /* Must be invoked with no lock held. */
2117 static void gem_stop_phy(struct gem *gp, int wol)
2120 unsigned long flags;
2122 /* Let the chip settle down a bit, it seems that helps
2123 * for sleep mode on some models
2127 /* Make sure we aren't polling PHY status change. We
2128 * don't currently use that feature though
2130 mifcfg = readl(gp->regs + MIF_CFG);
2131 mifcfg &= ~MIF_CFG_POLL;
2132 writel(mifcfg, gp->regs + MIF_CFG);
2134 if (wol && gp->has_wol) {
2135 unsigned char *e = &gp->dev->dev_addr[0];
2138 /* Setup wake-on-lan for MAGIC packet */
2139 writel(MAC_RXCFG_HFE | MAC_RXCFG_SFCS | MAC_RXCFG_ENAB,
2140 gp->regs + MAC_RXCFG);
2141 writel((e[4] << 8) | e[5], gp->regs + WOL_MATCH0);
2142 writel((e[2] << 8) | e[3], gp->regs + WOL_MATCH1);
2143 writel((e[0] << 8) | e[1], gp->regs + WOL_MATCH2);
2145 writel(WOL_MCOUNT_N | WOL_MCOUNT_M, gp->regs + WOL_MCOUNT);
2146 csr = WOL_WAKECSR_ENABLE;
2147 if ((readl(gp->regs + MAC_XIFCFG) & MAC_XIFCFG_GMII) == 0)
2148 csr |= WOL_WAKECSR_MII;
2149 writel(csr, gp->regs + WOL_WAKECSR);
2151 writel(0, gp->regs + MAC_RXCFG);
2152 (void)readl(gp->regs + MAC_RXCFG);
2153 /* Machine sleep will die in strange ways if we
2154 * dont wait a bit here, looks like the chip takes
2155 * some time to really shut down
2160 writel(0, gp->regs + MAC_TXCFG);
2161 writel(0, gp->regs + MAC_XIFCFG);
2162 writel(0, gp->regs + TXDMA_CFG);
2163 writel(0, gp->regs + RXDMA_CFG);
2166 spin_lock_irqsave(&gp->lock, flags);
2167 spin_lock(&gp->tx_lock);
2169 writel(MAC_TXRST_CMD, gp->regs + MAC_TXRST);
2170 writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST);
2171 spin_unlock(&gp->tx_lock);
2172 spin_unlock_irqrestore(&gp->lock, flags);
2174 /* No need to take the lock here */
2176 if (found_mii_phy(gp) && gp->phy_mii.def->ops->suspend)
2177 gp->phy_mii.def->ops->suspend(&gp->phy_mii);
2179 /* According to Apple, we must set the MDIO pins to this begnign
2180 * state or we may 1) eat more current, 2) damage some PHYs
2182 writel(mifcfg | MIF_CFG_BBMODE, gp->regs + MIF_CFG);
2183 writel(0, gp->regs + MIF_BBCLK);
2184 writel(0, gp->regs + MIF_BBDATA);
2185 writel(0, gp->regs + MIF_BBOENAB);
2186 writel(MAC_XIFCFG_GMII | MAC_XIFCFG_LBCK, gp->regs + MAC_XIFCFG);
2187 (void) readl(gp->regs + MAC_XIFCFG);
2192 static int gem_do_start(struct net_device *dev)
2194 struct gem *gp = dev->priv;
2195 unsigned long flags;
2197 spin_lock_irqsave(&gp->lock, flags);
2198 spin_lock(&gp->tx_lock);
2200 /* Enable the cell */
2203 /* Init & setup chip hardware */
2204 gem_reinit_chip(gp);
2208 if (gp->lstate == link_up) {
2209 netif_carrier_on(gp->dev);
2210 gem_set_link_modes(gp);
2213 netif_wake_queue(gp->dev);
2215 spin_unlock(&gp->tx_lock);
2216 spin_unlock_irqrestore(&gp->lock, flags);
2218 if (request_irq(gp->pdev->irq, gem_interrupt,
2219 SA_SHIRQ, dev->name, (void *)dev)) {
2220 printk(KERN_ERR "%s: failed to request irq !\n", gp->dev->name);
2222 spin_lock_irqsave(&gp->lock, flags);
2223 spin_lock(&gp->tx_lock);
2227 gem_clean_rings(gp);
2230 spin_unlock(&gp->tx_lock);
2231 spin_unlock_irqrestore(&gp->lock, flags);
2239 static void gem_do_stop(struct net_device *dev, int wol)
2241 struct gem *gp = dev->priv;
2242 unsigned long flags;
2244 spin_lock_irqsave(&gp->lock, flags);
2245 spin_lock(&gp->tx_lock);
2249 /* Stop netif queue */
2250 netif_stop_queue(dev);
2252 /* Make sure ints are disabled */
2253 gem_disable_ints(gp);
2255 /* We can drop the lock now */
2256 spin_unlock(&gp->tx_lock);
2257 spin_unlock_irqrestore(&gp->lock, flags);
2259 /* If we are going to sleep with WOL */
2266 /* Get rid of rings */
2267 gem_clean_rings(gp);
2269 /* No irq needed anymore */
2270 free_irq(gp->pdev->irq, (void *) dev);
2272 /* Cell not needed neither if no WOL */
2274 spin_lock_irqsave(&gp->lock, flags);
2276 spin_unlock_irqrestore(&gp->lock, flags);
2280 static void gem_reset_task(void *data)
2282 struct gem *gp = (struct gem *) data;
2286 netif_poll_disable(gp->dev);
2288 spin_lock_irq(&gp->lock);
2289 spin_lock(&gp->tx_lock);
2291 if (gp->running == 0)
2295 netif_stop_queue(gp->dev);
2297 /* Reset the chip & rings */
2298 gem_reinit_chip(gp);
2299 if (gp->lstate == link_up)
2300 gem_set_link_modes(gp);
2301 netif_wake_queue(gp->dev);
2304 gp->reset_task_pending = 0;
2306 spin_unlock(&gp->tx_lock);
2307 spin_unlock_irq(&gp->lock);
2309 netif_poll_enable(gp->dev);
2315 static int gem_open(struct net_device *dev)
2317 struct gem *gp = dev->priv;
2322 /* We need the cell enabled */
2324 rc = gem_do_start(dev);
2325 gp->opened = (rc == 0);
2332 static int gem_close(struct net_device *dev)
2334 struct gem *gp = dev->priv;
2336 /* Note: we don't need to call netif_poll_disable() here because
2337 * our caller (dev_close) already did it for us
2344 gem_do_stop(dev, 0);
2352 static int gem_suspend(struct pci_dev *pdev, pm_message_t state)
2354 struct net_device *dev = pci_get_drvdata(pdev);
2355 struct gem *gp = dev->priv;
2356 unsigned long flags;
2360 netif_poll_disable(dev);
2362 printk(KERN_INFO "%s: suspending, WakeOnLan %s\n",
2364 (gp->wake_on_lan && gp->opened) ? "enabled" : "disabled");
2366 /* Keep the cell enabled during the entire operation */
2367 spin_lock_irqsave(&gp->lock, flags);
2368 spin_lock(&gp->tx_lock);
2370 spin_unlock(&gp->tx_lock);
2371 spin_unlock_irqrestore(&gp->lock, flags);
2373 /* If the driver is opened, we stop the MAC */
2375 /* Stop traffic, mark us closed */
2376 netif_device_detach(dev);
2378 /* Switch off MAC, remember WOL setting */
2379 gp->asleep_wol = gp->wake_on_lan;
2380 gem_do_stop(dev, gp->asleep_wol);
2384 /* Mark us asleep */
2388 /* Stop the link timer */
2389 del_timer_sync(&gp->link_timer);
2391 /* Now we release the semaphore to not block the reset task who
2392 * can take it too. We are marked asleep, so there will be no
2397 /* Wait for a pending reset task to complete */
2398 while (gp->reset_task_pending)
2400 flush_scheduled_work();
2402 /* Shut the PHY down eventually and setup WOL */
2403 gem_stop_phy(gp, gp->asleep_wol);
2405 /* Make sure bus master is disabled */
2406 pci_disable_device(gp->pdev);
2408 /* Release the cell, no need to take a lock at this point since
2409 * nothing else can happen now
2416 static int gem_resume(struct pci_dev *pdev)
2418 struct net_device *dev = pci_get_drvdata(pdev);
2419 struct gem *gp = dev->priv;
2420 unsigned long flags;
2422 printk(KERN_INFO "%s: resuming\n", dev->name);
2426 /* Keep the cell enabled during the entire operation, no need to
2427 * take a lock here tho since nothing else can happen while we are
2432 /* Make sure PCI access and bus master are enabled */
2433 if (pci_enable_device(gp->pdev)) {
2434 printk(KERN_ERR "%s: Can't re-enable chip !\n",
2436 /* Put cell and forget it for now, it will be considered as
2437 * still asleep, a new sleep cycle may bring it back
2443 pci_set_master(gp->pdev);
2445 /* Reset everything */
2448 /* Mark us woken up */
2452 /* Bring the PHY back. Again, lock is useless at this point as
2453 * nothing can be happening until we restart the whole thing
2457 /* If we were opened, bring everything back */
2462 /* Re-attach net device */
2463 netif_device_attach(dev);
2467 spin_lock_irqsave(&gp->lock, flags);
2468 spin_lock(&gp->tx_lock);
2470 /* If we had WOL enabled, the cell clock was never turned off during
2471 * sleep, so we end up beeing unbalanced. Fix that here
2476 /* This function doesn't need to hold the cell, it will be held if the
2477 * driver is open by gem_do_start().
2481 spin_unlock(&gp->tx_lock);
2482 spin_unlock_irqrestore(&gp->lock, flags);
2484 netif_poll_enable(dev);
2490 #endif /* CONFIG_PM */
2492 static struct net_device_stats *gem_get_stats(struct net_device *dev)
2494 struct gem *gp = dev->priv;
2495 struct net_device_stats *stats = &gp->net_stats;
2497 spin_lock_irq(&gp->lock);
2498 spin_lock(&gp->tx_lock);
2500 /* I have seen this being called while the PM was in progress,
2501 * so we shield against this
2504 stats->rx_crc_errors += readl(gp->regs + MAC_FCSERR);
2505 writel(0, gp->regs + MAC_FCSERR);
2507 stats->rx_frame_errors += readl(gp->regs + MAC_AERR);
2508 writel(0, gp->regs + MAC_AERR);
2510 stats->rx_length_errors += readl(gp->regs + MAC_LERR);
2511 writel(0, gp->regs + MAC_LERR);
2513 stats->tx_aborted_errors += readl(gp->regs + MAC_ECOLL);
2514 stats->collisions +=
2515 (readl(gp->regs + MAC_ECOLL) +
2516 readl(gp->regs + MAC_LCOLL));
2517 writel(0, gp->regs + MAC_ECOLL);
2518 writel(0, gp->regs + MAC_LCOLL);
2521 spin_unlock(&gp->tx_lock);
2522 spin_unlock_irq(&gp->lock);
2524 return &gp->net_stats;
2527 static void gem_set_multicast(struct net_device *dev)
2529 struct gem *gp = dev->priv;
2530 u32 rxcfg, rxcfg_new;
2534 spin_lock_irq(&gp->lock);
2535 spin_lock(&gp->tx_lock);
2540 netif_stop_queue(dev);
2542 rxcfg = readl(gp->regs + MAC_RXCFG);
2543 rxcfg_new = gem_setup_multicast(gp);
2545 rxcfg_new |= MAC_RXCFG_SFCS;
2547 gp->mac_rx_cfg = rxcfg_new;
2549 writel(rxcfg & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
2550 while (readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB) {
2556 rxcfg &= ~(MAC_RXCFG_PROM | MAC_RXCFG_HFE);
2559 writel(rxcfg, gp->regs + MAC_RXCFG);
2561 netif_wake_queue(dev);
2564 spin_unlock(&gp->tx_lock);
2565 spin_unlock_irq(&gp->lock);
2568 /* Jumbo-grams don't seem to work :-( */
2569 #define GEM_MIN_MTU 68
2571 #define GEM_MAX_MTU 1500
2573 #define GEM_MAX_MTU 9000
2576 static int gem_change_mtu(struct net_device *dev, int new_mtu)
2578 struct gem *gp = dev->priv;
2580 if (new_mtu < GEM_MIN_MTU || new_mtu > GEM_MAX_MTU)
2583 if (!netif_running(dev) || !netif_device_present(dev)) {
2584 /* We'll just catch it later when the
2585 * device is up'd or resumed.
2592 spin_lock_irq(&gp->lock);
2593 spin_lock(&gp->tx_lock);
2596 gem_reinit_chip(gp);
2597 if (gp->lstate == link_up)
2598 gem_set_link_modes(gp);
2600 spin_unlock(&gp->tx_lock);
2601 spin_unlock_irq(&gp->lock);
2607 static void gem_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2609 struct gem *gp = dev->priv;
2611 strcpy(info->driver, DRV_NAME);
2612 strcpy(info->version, DRV_VERSION);
2613 strcpy(info->bus_info, pci_name(gp->pdev));
2616 static int gem_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2618 struct gem *gp = dev->priv;
2620 if (gp->phy_type == phy_mii_mdio0 ||
2621 gp->phy_type == phy_mii_mdio1) {
2622 if (gp->phy_mii.def)
2623 cmd->supported = gp->phy_mii.def->features;
2625 cmd->supported = (SUPPORTED_10baseT_Half |
2626 SUPPORTED_10baseT_Full);
2628 /* XXX hardcoded stuff for now */
2629 cmd->port = PORT_MII;
2630 cmd->transceiver = XCVR_EXTERNAL;
2631 cmd->phy_address = 0; /* XXX fixed PHYAD */
2633 /* Return current PHY settings */
2634 spin_lock_irq(&gp->lock);
2635 cmd->autoneg = gp->want_autoneg;
2636 cmd->speed = gp->phy_mii.speed;
2637 cmd->duplex = gp->phy_mii.duplex;
2638 cmd->advertising = gp->phy_mii.advertising;
2640 /* If we started with a forced mode, we don't have a default
2641 * advertise set, we need to return something sensible so
2642 * userland can re-enable autoneg properly.
2644 if (cmd->advertising == 0)
2645 cmd->advertising = cmd->supported;
2646 spin_unlock_irq(&gp->lock);
2647 } else { // XXX PCS ?
2649 (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
2650 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
2652 cmd->advertising = cmd->supported;
2654 cmd->duplex = cmd->port = cmd->phy_address =
2655 cmd->transceiver = cmd->autoneg = 0;
2657 cmd->maxtxpkt = cmd->maxrxpkt = 0;
2662 static int gem_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2664 struct gem *gp = dev->priv;
2666 /* Verify the settings we care about. */
2667 if (cmd->autoneg != AUTONEG_ENABLE &&
2668 cmd->autoneg != AUTONEG_DISABLE)
2671 if (cmd->autoneg == AUTONEG_ENABLE &&
2672 cmd->advertising == 0)
2675 if (cmd->autoneg == AUTONEG_DISABLE &&
2676 ((cmd->speed != SPEED_1000 &&
2677 cmd->speed != SPEED_100 &&
2678 cmd->speed != SPEED_10) ||
2679 (cmd->duplex != DUPLEX_HALF &&
2680 cmd->duplex != DUPLEX_FULL)))
2683 /* Apply settings and restart link process. */
2684 spin_lock_irq(&gp->lock);
2686 gem_begin_auto_negotiation(gp, cmd);
2688 spin_unlock_irq(&gp->lock);
2693 static int gem_nway_reset(struct net_device *dev)
2695 struct gem *gp = dev->priv;
2697 if (!gp->want_autoneg)
2700 /* Restart link process. */
2701 spin_lock_irq(&gp->lock);
2703 gem_begin_auto_negotiation(gp, NULL);
2705 spin_unlock_irq(&gp->lock);
2710 static u32 gem_get_msglevel(struct net_device *dev)
2712 struct gem *gp = dev->priv;
2713 return gp->msg_enable;
2716 static void gem_set_msglevel(struct net_device *dev, u32 value)
2718 struct gem *gp = dev->priv;
2719 gp->msg_enable = value;
2723 /* Add more when I understand how to program the chip */
2724 /* like WAKE_UCAST | WAKE_MCAST | WAKE_BCAST */
2726 #define WOL_SUPPORTED_MASK (WAKE_MAGIC)
2728 static void gem_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2730 struct gem *gp = dev->priv;
2732 /* Add more when I understand how to program the chip */
2734 wol->supported = WOL_SUPPORTED_MASK;
2735 wol->wolopts = gp->wake_on_lan;
2742 static int gem_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2744 struct gem *gp = dev->priv;
2748 gp->wake_on_lan = wol->wolopts & WOL_SUPPORTED_MASK;
2752 static struct ethtool_ops gem_ethtool_ops = {
2753 .get_drvinfo = gem_get_drvinfo,
2754 .get_link = ethtool_op_get_link,
2755 .get_settings = gem_get_settings,
2756 .set_settings = gem_set_settings,
2757 .nway_reset = gem_nway_reset,
2758 .get_msglevel = gem_get_msglevel,
2759 .set_msglevel = gem_set_msglevel,
2760 .get_wol = gem_get_wol,
2761 .set_wol = gem_set_wol,
2764 static int gem_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2766 struct gem *gp = dev->priv;
2767 struct mii_ioctl_data *data = if_mii(ifr);
2768 int rc = -EOPNOTSUPP;
2769 unsigned long flags;
2771 /* Hold the PM semaphore while doing ioctl's or we may collide
2772 * with power management.
2776 spin_lock_irqsave(&gp->lock, flags);
2778 spin_unlock_irqrestore(&gp->lock, flags);
2781 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2782 data->phy_id = gp->mii_phy_addr;
2783 /* Fallthrough... */
2785 case SIOCGMIIREG: /* Read MII PHY register. */
2789 data->val_out = __phy_read(gp, data->phy_id & 0x1f,
2790 data->reg_num & 0x1f);
2795 case SIOCSMIIREG: /* Write MII PHY register. */
2796 if (!capable(CAP_NET_ADMIN))
2798 else if (!gp->running)
2801 __phy_write(gp, data->phy_id & 0x1f, data->reg_num & 0x1f,
2808 spin_lock_irqsave(&gp->lock, flags);
2810 spin_unlock_irqrestore(&gp->lock, flags);
2817 #if (!defined(__sparc__) && !defined(CONFIG_PPC_PMAC))
2818 /* Fetch MAC address from vital product data of PCI ROM. */
2819 static void find_eth_addr_in_vpd(void __iomem *rom_base, int len, unsigned char *dev_addr)
2823 for (this_offset = 0x20; this_offset < len; this_offset++) {
2824 void __iomem *p = rom_base + this_offset;
2827 if (readb(p + 0) != 0x90 ||
2828 readb(p + 1) != 0x00 ||
2829 readb(p + 2) != 0x09 ||
2830 readb(p + 3) != 0x4e ||
2831 readb(p + 4) != 0x41 ||
2832 readb(p + 5) != 0x06)
2838 for (i = 0; i < 6; i++)
2839 dev_addr[i] = readb(p + i);
2844 static void get_gem_mac_nonobp(struct pci_dev *pdev, unsigned char *dev_addr)
2849 if (pdev->resource[PCI_ROM_RESOURCE].parent == NULL) {
2850 if (pci_assign_resource(pdev, PCI_ROM_RESOURCE) < 0)
2854 pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_reg_orig);
2855 pci_write_config_dword(pdev, pdev->rom_base_reg,
2856 rom_reg_orig | PCI_ROM_ADDRESS_ENABLE);
2858 p = ioremap(pci_resource_start(pdev, PCI_ROM_RESOURCE), (64 * 1024));
2859 if (p != NULL && readb(p) == 0x55 && readb(p + 1) == 0xaa)
2860 find_eth_addr_in_vpd(p, (64 * 1024), dev_addr);
2865 pci_write_config_dword(pdev, pdev->rom_base_reg, rom_reg_orig);
2869 /* Sun MAC prefix then 3 random bytes. */
2873 get_random_bytes(dev_addr + 3, 3);
2876 #endif /* not Sparc and not PPC */
2878 static int __devinit gem_get_device_address(struct gem *gp)
2880 #if defined(__sparc__) || defined(CONFIG_PPC_PMAC)
2881 struct net_device *dev = gp->dev;
2884 #if defined(__sparc__)
2885 struct pci_dev *pdev = gp->pdev;
2886 struct pcidev_cookie *pcp = pdev->sysdata;
2890 node = pcp->prom_node;
2891 if (prom_getproplen(node, "local-mac-address") == 6)
2892 prom_getproperty(node, "local-mac-address",
2898 memcpy(dev->dev_addr, idprom->id_ethaddr, 6);
2899 #elif defined(CONFIG_PPC_PMAC)
2900 unsigned char *addr;
2902 addr = get_property(gp->of_node, "local-mac-address", NULL);
2905 printk(KERN_ERR "%s: can't get mac-address\n", dev->name);
2908 memcpy(dev->dev_addr, addr, 6);
2910 get_gem_mac_nonobp(gp->pdev, gp->dev->dev_addr);
2915 static void __devexit gem_remove_one(struct pci_dev *pdev)
2917 struct net_device *dev = pci_get_drvdata(pdev);
2920 struct gem *gp = dev->priv;
2922 unregister_netdev(dev);
2924 /* Stop the link timer */
2925 del_timer_sync(&gp->link_timer);
2927 /* We shouldn't need any locking here */
2930 /* Wait for a pending reset task to complete */
2931 while (gp->reset_task_pending)
2933 flush_scheduled_work();
2935 /* Shut the PHY down */
2936 gem_stop_phy(gp, 0);
2940 /* Make sure bus master is disabled */
2941 pci_disable_device(gp->pdev);
2943 /* Free resources */
2944 pci_free_consistent(pdev,
2945 sizeof(struct gem_init_block),
2949 pci_release_regions(pdev);
2952 pci_set_drvdata(pdev, NULL);
2956 static int __devinit gem_init_one(struct pci_dev *pdev,
2957 const struct pci_device_id *ent)
2959 static int gem_version_printed = 0;
2960 unsigned long gemreg_base, gemreg_len;
2961 struct net_device *dev;
2963 int i, err, pci_using_dac;
2965 if (gem_version_printed++ == 0)
2966 printk(KERN_INFO "%s", version);
2968 /* Apple gmac note: during probe, the chip is powered up by
2969 * the arch code to allow the code below to work (and to let
2970 * the chip be probed on the config space. It won't stay powered
2971 * up until the interface is brought up however, so we can't rely
2972 * on register configuration done at this point.
2974 err = pci_enable_device(pdev);
2976 printk(KERN_ERR PFX "Cannot enable MMIO operation, "
2980 pci_set_master(pdev);
2982 /* Configure DMA attributes. */
2984 /* All of the GEM documentation states that 64-bit DMA addressing
2985 * is fully supported and should work just fine. However the
2986 * front end for RIO based GEMs is different and only supports
2987 * 32-bit addressing.
2989 * For now we assume the various PPC GEMs are 32-bit only as well.
2991 if (pdev->vendor == PCI_VENDOR_ID_SUN &&
2992 pdev->device == PCI_DEVICE_ID_SUN_GEM &&
2993 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
2996 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2998 printk(KERN_ERR PFX "No usable DMA configuration, "
3000 goto err_disable_device;
3005 gemreg_base = pci_resource_start(pdev, 0);
3006 gemreg_len = pci_resource_len(pdev, 0);
3008 if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) {
3009 printk(KERN_ERR PFX "Cannot find proper PCI device "
3010 "base address, aborting.\n");
3012 goto err_disable_device;
3015 dev = alloc_etherdev(sizeof(*gp));
3017 printk(KERN_ERR PFX "Etherdev alloc failed, aborting.\n");
3019 goto err_disable_device;
3021 SET_MODULE_OWNER(dev);
3022 SET_NETDEV_DEV(dev, &pdev->dev);
3026 err = pci_request_regions(pdev, DRV_NAME);
3028 printk(KERN_ERR PFX "Cannot obtain PCI resources, "
3030 goto err_out_free_netdev;
3034 dev->base_addr = (long) pdev;
3037 gp->msg_enable = DEFAULT_MSG;
3039 spin_lock_init(&gp->lock);
3040 spin_lock_init(&gp->tx_lock);
3041 init_MUTEX(&gp->pm_sem);
3043 init_timer(&gp->link_timer);
3044 gp->link_timer.function = gem_link_timer;
3045 gp->link_timer.data = (unsigned long) gp;
3047 INIT_WORK(&gp->reset_task, gem_reset_task, gp);
3049 gp->lstate = link_down;
3050 gp->timer_ticks = 0;
3051 netif_carrier_off(dev);
3053 gp->regs = ioremap(gemreg_base, gemreg_len);
3054 if (gp->regs == 0UL) {
3055 printk(KERN_ERR PFX "Cannot map device registers, "
3058 goto err_out_free_res;
3061 /* On Apple, we want a reference to the Open Firmware device-tree
3062 * node. We use it for clock control.
3064 #ifdef CONFIG_PPC_PMAC
3065 gp->of_node = pci_device_to_OF_node(pdev);
3068 /* Only Apple version supports WOL afaik */
3069 if (pdev->vendor == PCI_VENDOR_ID_APPLE)
3072 /* Make sure cell is enabled */
3075 /* Make sure everything is stopped and in init state */
3078 /* Fill up the mii_phy structure (even if we won't use it) */
3079 gp->phy_mii.dev = dev;
3080 gp->phy_mii.mdio_read = _phy_read;
3081 gp->phy_mii.mdio_write = _phy_write;
3082 #ifdef CONFIG_PPC_PMAC
3083 gp->phy_mii.platform_data = gp->of_node;
3085 /* By default, we start with autoneg */
3086 gp->want_autoneg = 1;
3088 /* Check fifo sizes, PHY type, etc... */
3089 if (gem_check_invariants(gp)) {
3091 goto err_out_iounmap;
3094 /* It is guaranteed that the returned buffer will be at least
3095 * PAGE_SIZE aligned.
3097 gp->init_block = (struct gem_init_block *)
3098 pci_alloc_consistent(pdev, sizeof(struct gem_init_block),
3100 if (!gp->init_block) {
3101 printk(KERN_ERR PFX "Cannot allocate init block, "
3104 goto err_out_iounmap;
3107 if (gem_get_device_address(gp))
3108 goto err_out_free_consistent;
3110 dev->open = gem_open;
3111 dev->stop = gem_close;
3112 dev->hard_start_xmit = gem_start_xmit;
3113 dev->get_stats = gem_get_stats;
3114 dev->set_multicast_list = gem_set_multicast;
3115 dev->do_ioctl = gem_ioctl;
3116 dev->poll = gem_poll;
3118 dev->ethtool_ops = &gem_ethtool_ops;
3119 dev->tx_timeout = gem_tx_timeout;
3120 dev->watchdog_timeo = 5 * HZ;
3121 dev->change_mtu = gem_change_mtu;
3122 dev->irq = pdev->irq;
3124 #ifdef CONFIG_NET_POLL_CONTROLLER
3125 dev->poll_controller = gem_poll_controller;
3128 /* Set that now, in case PM kicks in now */
3129 pci_set_drvdata(pdev, dev);
3131 /* Detect & init PHY, start autoneg, we release the cell now
3132 * too, it will be managed by whoever needs it
3136 spin_lock_irq(&gp->lock);
3138 spin_unlock_irq(&gp->lock);
3140 /* Register with kernel */
3141 if (register_netdev(dev)) {
3142 printk(KERN_ERR PFX "Cannot register net device, "
3145 goto err_out_free_consistent;
3148 printk(KERN_INFO "%s: Sun GEM (PCI) 10/100/1000BaseT Ethernet ",
3150 for (i = 0; i < 6; i++)
3151 printk("%2.2x%c", dev->dev_addr[i],
3152 i == 5 ? ' ' : ':');
3155 if (gp->phy_type == phy_mii_mdio0 ||
3156 gp->phy_type == phy_mii_mdio1)
3157 printk(KERN_INFO "%s: Found %s PHY\n", dev->name,
3158 gp->phy_mii.def ? gp->phy_mii.def->name : "no");
3160 /* GEM can do it all... */
3161 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_LLTX;
3163 dev->features |= NETIF_F_HIGHDMA;
3167 err_out_free_consistent:
3168 gem_remove_one(pdev);
3174 pci_release_regions(pdev);
3176 err_out_free_netdev:
3179 pci_disable_device(pdev);
3185 static struct pci_driver gem_driver = {
3186 .name = GEM_MODULE_NAME,
3187 .id_table = gem_pci_tbl,
3188 .probe = gem_init_one,
3189 .remove = __devexit_p(gem_remove_one),
3191 .suspend = gem_suspend,
3192 .resume = gem_resume,
3193 #endif /* CONFIG_PM */
3196 static int __init gem_init(void)
3198 return pci_module_init(&gem_driver);
3201 static void __exit gem_cleanup(void)
3203 pci_unregister_driver(&gem_driver);
3206 module_init(gem_init);
3207 module_exit(gem_cleanup);