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>
58 #include <linux/mutex.h>
60 #include <asm/system.h>
62 #include <asm/byteorder.h>
63 #include <asm/uaccess.h>
67 #include <asm/idprom.h>
68 #include <asm/openprom.h>
69 #include <asm/oplib.h>
73 #ifdef CONFIG_PPC_PMAC
74 #include <asm/pci-bridge.h>
76 #include <asm/machdep.h>
77 #include <asm/pmac_feature.h>
80 #include "sungem_phy.h"
83 /* Stripping FCS is causing problems, disabled for now */
86 #define DEFAULT_MSG (NETIF_MSG_DRV | \
90 #define ADVERTISE_MASK (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | \
91 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | \
92 SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)
94 #define DRV_NAME "sungem"
95 #define DRV_VERSION "0.98"
96 #define DRV_RELDATE "8/24/03"
97 #define DRV_AUTHOR "David S. Miller (davem@redhat.com)"
99 static char version[] __devinitdata =
100 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n";
102 MODULE_AUTHOR(DRV_AUTHOR);
103 MODULE_DESCRIPTION("Sun GEM Gbit ethernet driver");
104 MODULE_LICENSE("GPL");
106 #define GEM_MODULE_NAME "gem"
107 #define PFX GEM_MODULE_NAME ": "
109 static struct pci_device_id gem_pci_tbl[] = {
110 { PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_GEM,
111 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
113 /* These models only differ from the original GEM in
114 * that their tx/rx fifos are of a different size and
115 * they only support 10/100 speeds. -DaveM
117 * Apple's GMAC does support gigabit on machines with
118 * the BCM54xx PHYs. -BenH
120 { PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_RIO_GEM,
121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
122 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
124 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMACP,
125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
126 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC2,
127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
128 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_K2_GMAC,
129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
130 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_SH_SUNGEM,
131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
132 { PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_IPID2_GMAC,
133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
137 MODULE_DEVICE_TABLE(pci, gem_pci_tbl);
139 static u16 __phy_read(struct gem *gp, int phy_addr, int reg)
146 cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD;
147 cmd |= (reg << 18) & MIF_FRAME_REGAD;
148 cmd |= (MIF_FRAME_TAMSB);
149 writel(cmd, gp->regs + MIF_FRAME);
152 cmd = readl(gp->regs + MIF_FRAME);
153 if (cmd & MIF_FRAME_TALSB)
162 return cmd & MIF_FRAME_DATA;
165 static inline int _phy_read(struct net_device *dev, int mii_id, int reg)
167 struct gem *gp = dev->priv;
168 return __phy_read(gp, mii_id, reg);
171 static inline u16 phy_read(struct gem *gp, int reg)
173 return __phy_read(gp, gp->mii_phy_addr, reg);
176 static void __phy_write(struct gem *gp, int phy_addr, int reg, u16 val)
183 cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD;
184 cmd |= (reg << 18) & MIF_FRAME_REGAD;
185 cmd |= (MIF_FRAME_TAMSB);
186 cmd |= (val & MIF_FRAME_DATA);
187 writel(cmd, gp->regs + MIF_FRAME);
190 cmd = readl(gp->regs + MIF_FRAME);
191 if (cmd & MIF_FRAME_TALSB)
198 static inline void _phy_write(struct net_device *dev, int mii_id, int reg, int val)
200 struct gem *gp = dev->priv;
201 __phy_write(gp, mii_id, reg, val & 0xffff);
204 static inline void phy_write(struct gem *gp, int reg, u16 val)
206 __phy_write(gp, gp->mii_phy_addr, reg, val);
209 static inline void gem_enable_ints(struct gem *gp)
211 /* Enable all interrupts but TXDONE */
212 writel(GREG_STAT_TXDONE, gp->regs + GREG_IMASK);
215 static inline void gem_disable_ints(struct gem *gp)
217 /* Disable all interrupts, including TXDONE */
218 writel(GREG_STAT_NAPI | GREG_STAT_TXDONE, gp->regs + GREG_IMASK);
221 static void gem_get_cell(struct gem *gp)
223 BUG_ON(gp->cell_enabled < 0);
225 #ifdef CONFIG_PPC_PMAC
226 if (gp->cell_enabled == 1) {
228 pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 1);
231 #endif /* CONFIG_PPC_PMAC */
234 /* Turn off the chip's clock */
235 static void gem_put_cell(struct gem *gp)
237 BUG_ON(gp->cell_enabled <= 0);
239 #ifdef CONFIG_PPC_PMAC
240 if (gp->cell_enabled == 0) {
242 pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 0);
245 #endif /* CONFIG_PPC_PMAC */
248 static void gem_handle_mif_event(struct gem *gp, u32 reg_val, u32 changed_bits)
250 if (netif_msg_intr(gp))
251 printk(KERN_DEBUG "%s: mif interrupt\n", gp->dev->name);
254 static int gem_pcs_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
256 u32 pcs_istat = readl(gp->regs + PCS_ISTAT);
259 if (netif_msg_intr(gp))
260 printk(KERN_DEBUG "%s: pcs interrupt, pcs_istat: 0x%x\n",
261 gp->dev->name, pcs_istat);
263 if (!(pcs_istat & PCS_ISTAT_LSC)) {
264 printk(KERN_ERR "%s: PCS irq but no link status change???\n",
269 /* The link status bit latches on zero, so you must
270 * read it twice in such a case to see a transition
271 * to the link being up.
273 pcs_miistat = readl(gp->regs + PCS_MIISTAT);
274 if (!(pcs_miistat & PCS_MIISTAT_LS))
276 (readl(gp->regs + PCS_MIISTAT) &
279 if (pcs_miistat & PCS_MIISTAT_ANC) {
280 /* The remote-fault indication is only valid
281 * when autoneg has completed.
283 if (pcs_miistat & PCS_MIISTAT_RF)
284 printk(KERN_INFO "%s: PCS AutoNEG complete, "
285 "RemoteFault\n", dev->name);
287 printk(KERN_INFO "%s: PCS AutoNEG complete.\n",
291 if (pcs_miistat & PCS_MIISTAT_LS) {
292 printk(KERN_INFO "%s: PCS link is now up.\n",
294 netif_carrier_on(gp->dev);
296 printk(KERN_INFO "%s: PCS link is now down.\n",
298 netif_carrier_off(gp->dev);
299 /* If this happens and the link timer is not running,
300 * reset so we re-negotiate.
302 if (!timer_pending(&gp->link_timer))
309 static int gem_txmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
311 u32 txmac_stat = readl(gp->regs + MAC_TXSTAT);
313 if (netif_msg_intr(gp))
314 printk(KERN_DEBUG "%s: txmac interrupt, txmac_stat: 0x%x\n",
315 gp->dev->name, txmac_stat);
317 /* Defer timer expiration is quite normal,
318 * don't even log the event.
320 if ((txmac_stat & MAC_TXSTAT_DTE) &&
321 !(txmac_stat & ~MAC_TXSTAT_DTE))
324 if (txmac_stat & MAC_TXSTAT_URUN) {
325 printk(KERN_ERR "%s: TX MAC xmit underrun.\n",
327 gp->net_stats.tx_fifo_errors++;
330 if (txmac_stat & MAC_TXSTAT_MPE) {
331 printk(KERN_ERR "%s: TX MAC max packet size error.\n",
333 gp->net_stats.tx_errors++;
336 /* The rest are all cases of one of the 16-bit TX
339 if (txmac_stat & MAC_TXSTAT_NCE)
340 gp->net_stats.collisions += 0x10000;
342 if (txmac_stat & MAC_TXSTAT_ECE) {
343 gp->net_stats.tx_aborted_errors += 0x10000;
344 gp->net_stats.collisions += 0x10000;
347 if (txmac_stat & MAC_TXSTAT_LCE) {
348 gp->net_stats.tx_aborted_errors += 0x10000;
349 gp->net_stats.collisions += 0x10000;
352 /* We do not keep track of MAC_TXSTAT_FCE and
353 * MAC_TXSTAT_PCE events.
358 /* When we get a RX fifo overflow, the RX unit in GEM is probably hung
359 * so we do the following.
361 * If any part of the reset goes wrong, we return 1 and that causes the
362 * whole chip to be reset.
364 static int gem_rxmac_reset(struct gem *gp)
366 struct net_device *dev = gp->dev;
371 /* First, reset & disable MAC RX. */
372 writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST);
373 for (limit = 0; limit < 5000; limit++) {
374 if (!(readl(gp->regs + MAC_RXRST) & MAC_RXRST_CMD))
379 printk(KERN_ERR "%s: RX MAC will not reset, resetting whole "
380 "chip.\n", dev->name);
384 writel(gp->mac_rx_cfg & ~MAC_RXCFG_ENAB,
385 gp->regs + MAC_RXCFG);
386 for (limit = 0; limit < 5000; limit++) {
387 if (!(readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB))
392 printk(KERN_ERR "%s: RX MAC will not disable, resetting whole "
393 "chip.\n", dev->name);
397 /* Second, disable RX DMA. */
398 writel(0, gp->regs + RXDMA_CFG);
399 for (limit = 0; limit < 5000; limit++) {
400 if (!(readl(gp->regs + RXDMA_CFG) & RXDMA_CFG_ENABLE))
405 printk(KERN_ERR "%s: RX DMA will not disable, resetting whole "
406 "chip.\n", dev->name);
412 /* Execute RX reset command. */
413 writel(gp->swrst_base | GREG_SWRST_RXRST,
414 gp->regs + GREG_SWRST);
415 for (limit = 0; limit < 5000; limit++) {
416 if (!(readl(gp->regs + GREG_SWRST) & GREG_SWRST_RXRST))
421 printk(KERN_ERR "%s: RX reset command will not execute, resetting "
422 "whole chip.\n", dev->name);
426 /* Refresh the RX ring. */
427 for (i = 0; i < RX_RING_SIZE; i++) {
428 struct gem_rxd *rxd = &gp->init_block->rxd[i];
430 if (gp->rx_skbs[i] == NULL) {
431 printk(KERN_ERR "%s: Parts of RX ring empty, resetting "
432 "whole chip.\n", dev->name);
436 rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
438 gp->rx_new = gp->rx_old = 0;
440 /* Now we must reprogram the rest of RX unit. */
441 desc_dma = (u64) gp->gblock_dvma;
442 desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd));
443 writel(desc_dma >> 32, gp->regs + RXDMA_DBHI);
444 writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW);
445 writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
446 val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) |
447 ((14 / 2) << 13) | RXDMA_CFG_FTHRESH_128);
448 writel(val, gp->regs + RXDMA_CFG);
449 if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN)
450 writel(((5 & RXDMA_BLANK_IPKTS) |
451 ((8 << 12) & RXDMA_BLANK_ITIME)),
452 gp->regs + RXDMA_BLANK);
454 writel(((5 & RXDMA_BLANK_IPKTS) |
455 ((4 << 12) & RXDMA_BLANK_ITIME)),
456 gp->regs + RXDMA_BLANK);
457 val = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF);
458 val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON);
459 writel(val, gp->regs + RXDMA_PTHRESH);
460 val = readl(gp->regs + RXDMA_CFG);
461 writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
462 writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK);
463 val = readl(gp->regs + MAC_RXCFG);
464 writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
469 static int gem_rxmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
471 u32 rxmac_stat = readl(gp->regs + MAC_RXSTAT);
474 if (netif_msg_intr(gp))
475 printk(KERN_DEBUG "%s: rxmac interrupt, rxmac_stat: 0x%x\n",
476 gp->dev->name, rxmac_stat);
478 if (rxmac_stat & MAC_RXSTAT_OFLW) {
479 u32 smac = readl(gp->regs + MAC_SMACHINE);
481 printk(KERN_ERR "%s: RX MAC fifo overflow smac[%08x].\n",
483 gp->net_stats.rx_over_errors++;
484 gp->net_stats.rx_fifo_errors++;
486 ret = gem_rxmac_reset(gp);
489 if (rxmac_stat & MAC_RXSTAT_ACE)
490 gp->net_stats.rx_frame_errors += 0x10000;
492 if (rxmac_stat & MAC_RXSTAT_CCE)
493 gp->net_stats.rx_crc_errors += 0x10000;
495 if (rxmac_stat & MAC_RXSTAT_LCE)
496 gp->net_stats.rx_length_errors += 0x10000;
498 /* We do not track MAC_RXSTAT_FCE and MAC_RXSTAT_VCE
504 static int gem_mac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
506 u32 mac_cstat = readl(gp->regs + MAC_CSTAT);
508 if (netif_msg_intr(gp))
509 printk(KERN_DEBUG "%s: mac interrupt, mac_cstat: 0x%x\n",
510 gp->dev->name, mac_cstat);
512 /* This interrupt is just for pause frame and pause
513 * tracking. It is useful for diagnostics and debug
514 * but probably by default we will mask these events.
516 if (mac_cstat & MAC_CSTAT_PS)
519 if (mac_cstat & MAC_CSTAT_PRCV)
520 gp->pause_last_time_recvd = (mac_cstat >> 16);
525 static int gem_mif_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
527 u32 mif_status = readl(gp->regs + MIF_STATUS);
528 u32 reg_val, changed_bits;
530 reg_val = (mif_status & MIF_STATUS_DATA) >> 16;
531 changed_bits = (mif_status & MIF_STATUS_STAT);
533 gem_handle_mif_event(gp, reg_val, changed_bits);
538 static int gem_pci_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
540 u32 pci_estat = readl(gp->regs + GREG_PCIESTAT);
542 if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
543 gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) {
544 printk(KERN_ERR "%s: PCI error [%04x] ",
545 dev->name, pci_estat);
547 if (pci_estat & GREG_PCIESTAT_BADACK)
548 printk("<No ACK64# during ABS64 cycle> ");
549 if (pci_estat & GREG_PCIESTAT_DTRTO)
550 printk("<Delayed transaction timeout> ");
551 if (pci_estat & GREG_PCIESTAT_OTHER)
555 pci_estat |= GREG_PCIESTAT_OTHER;
556 printk(KERN_ERR "%s: PCI error\n", dev->name);
559 if (pci_estat & GREG_PCIESTAT_OTHER) {
562 /* Interrogate PCI config space for the
565 pci_read_config_word(gp->pdev, PCI_STATUS,
567 printk(KERN_ERR "%s: Read PCI cfg space status [%04x]\n",
568 dev->name, pci_cfg_stat);
569 if (pci_cfg_stat & PCI_STATUS_PARITY)
570 printk(KERN_ERR "%s: PCI parity error detected.\n",
572 if (pci_cfg_stat & PCI_STATUS_SIG_TARGET_ABORT)
573 printk(KERN_ERR "%s: PCI target abort.\n",
575 if (pci_cfg_stat & PCI_STATUS_REC_TARGET_ABORT)
576 printk(KERN_ERR "%s: PCI master acks target abort.\n",
578 if (pci_cfg_stat & PCI_STATUS_REC_MASTER_ABORT)
579 printk(KERN_ERR "%s: PCI master abort.\n",
581 if (pci_cfg_stat & PCI_STATUS_SIG_SYSTEM_ERROR)
582 printk(KERN_ERR "%s: PCI system error SERR#.\n",
584 if (pci_cfg_stat & PCI_STATUS_DETECTED_PARITY)
585 printk(KERN_ERR "%s: PCI parity error.\n",
588 /* Write the error bits back to clear them. */
589 pci_cfg_stat &= (PCI_STATUS_PARITY |
590 PCI_STATUS_SIG_TARGET_ABORT |
591 PCI_STATUS_REC_TARGET_ABORT |
592 PCI_STATUS_REC_MASTER_ABORT |
593 PCI_STATUS_SIG_SYSTEM_ERROR |
594 PCI_STATUS_DETECTED_PARITY);
595 pci_write_config_word(gp->pdev,
596 PCI_STATUS, pci_cfg_stat);
599 /* For all PCI errors, we should reset the chip. */
603 /* All non-normal interrupt conditions get serviced here.
604 * Returns non-zero if we should just exit the interrupt
605 * handler right now (ie. if we reset the card which invalidates
606 * all of the other original irq status bits).
608 static int gem_abnormal_irq(struct net_device *dev, struct gem *gp, u32 gem_status)
610 if (gem_status & GREG_STAT_RXNOBUF) {
611 /* Frame arrived, no free RX buffers available. */
612 if (netif_msg_rx_err(gp))
613 printk(KERN_DEBUG "%s: no buffer for rx frame\n",
615 gp->net_stats.rx_dropped++;
618 if (gem_status & GREG_STAT_RXTAGERR) {
619 /* corrupt RX tag framing */
620 if (netif_msg_rx_err(gp))
621 printk(KERN_DEBUG "%s: corrupt rx tag framing\n",
623 gp->net_stats.rx_errors++;
628 if (gem_status & GREG_STAT_PCS) {
629 if (gem_pcs_interrupt(dev, gp, gem_status))
633 if (gem_status & GREG_STAT_TXMAC) {
634 if (gem_txmac_interrupt(dev, gp, gem_status))
638 if (gem_status & GREG_STAT_RXMAC) {
639 if (gem_rxmac_interrupt(dev, gp, gem_status))
643 if (gem_status & GREG_STAT_MAC) {
644 if (gem_mac_interrupt(dev, gp, gem_status))
648 if (gem_status & GREG_STAT_MIF) {
649 if (gem_mif_interrupt(dev, gp, gem_status))
653 if (gem_status & GREG_STAT_PCIERR) {
654 if (gem_pci_interrupt(dev, gp, gem_status))
661 gp->reset_task_pending = 1;
662 schedule_work(&gp->reset_task);
667 static __inline__ void gem_tx(struct net_device *dev, struct gem *gp, u32 gem_status)
671 if (netif_msg_intr(gp))
672 printk(KERN_DEBUG "%s: tx interrupt, gem_status: 0x%x\n",
673 gp->dev->name, gem_status);
676 limit = ((gem_status & GREG_STAT_TXNR) >> GREG_STAT_TXNR_SHIFT);
677 while (entry != limit) {
684 if (netif_msg_tx_done(gp))
685 printk(KERN_DEBUG "%s: tx done, slot %d\n",
686 gp->dev->name, entry);
687 skb = gp->tx_skbs[entry];
688 if (skb_shinfo(skb)->nr_frags) {
689 int last = entry + skb_shinfo(skb)->nr_frags;
693 last &= (TX_RING_SIZE - 1);
695 walk = NEXT_TX(walk);
704 gp->tx_skbs[entry] = NULL;
705 gp->net_stats.tx_bytes += skb->len;
707 for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
708 txd = &gp->init_block->txd[entry];
710 dma_addr = le64_to_cpu(txd->buffer);
711 dma_len = le64_to_cpu(txd->control_word) & TXDCTRL_BUFSZ;
713 pci_unmap_page(gp->pdev, dma_addr, dma_len, PCI_DMA_TODEVICE);
714 entry = NEXT_TX(entry);
717 gp->net_stats.tx_packets++;
718 dev_kfree_skb_irq(skb);
722 if (netif_queue_stopped(dev) &&
723 TX_BUFFS_AVAIL(gp) > (MAX_SKB_FRAGS + 1))
724 netif_wake_queue(dev);
727 static __inline__ void gem_post_rxds(struct gem *gp, int limit)
729 int cluster_start, curr, count, kick;
731 cluster_start = curr = (gp->rx_new & ~(4 - 1));
735 while (curr != limit) {
736 curr = NEXT_RX(curr);
738 struct gem_rxd *rxd =
739 &gp->init_block->rxd[cluster_start];
741 rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
743 cluster_start = NEXT_RX(cluster_start);
744 if (cluster_start == curr)
753 writel(kick, gp->regs + RXDMA_KICK);
757 static int gem_rx(struct gem *gp, int work_to_do)
759 int entry, drops, work_done = 0;
762 if (netif_msg_rx_status(gp))
763 printk(KERN_DEBUG "%s: rx interrupt, done: %d, rx_new: %d\n",
764 gp->dev->name, readl(gp->regs + RXDMA_DONE), gp->rx_new);
768 done = readl(gp->regs + RXDMA_DONE);
770 struct gem_rxd *rxd = &gp->init_block->rxd[entry];
772 u64 status = cpu_to_le64(rxd->status_word);
776 if ((status & RXDCTRL_OWN) != 0)
779 if (work_done >= RX_RING_SIZE || work_done >= work_to_do)
782 /* When writing back RX descriptor, GEM writes status
783 * then buffer address, possibly in seperate transactions.
784 * If we don't wait for the chip to write both, we could
785 * post a new buffer to this descriptor then have GEM spam
786 * on the buffer address. We sync on the RX completion
787 * register to prevent this from happening.
790 done = readl(gp->regs + RXDMA_DONE);
795 /* We can now account for the work we're about to do */
798 skb = gp->rx_skbs[entry];
800 len = (status & RXDCTRL_BUFSZ) >> 16;
801 if ((len < ETH_ZLEN) || (status & RXDCTRL_BAD)) {
802 gp->net_stats.rx_errors++;
804 gp->net_stats.rx_length_errors++;
805 if (len & RXDCTRL_BAD)
806 gp->net_stats.rx_crc_errors++;
808 /* We'll just return it to GEM. */
810 gp->net_stats.rx_dropped++;
814 dma_addr = cpu_to_le64(rxd->buffer);
815 if (len > RX_COPY_THRESHOLD) {
816 struct sk_buff *new_skb;
818 new_skb = gem_alloc_skb(RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC);
819 if (new_skb == NULL) {
823 pci_unmap_page(gp->pdev, dma_addr,
824 RX_BUF_ALLOC_SIZE(gp),
826 gp->rx_skbs[entry] = new_skb;
827 new_skb->dev = gp->dev;
828 skb_put(new_skb, (gp->rx_buf_sz + RX_OFFSET));
829 rxd->buffer = cpu_to_le64(pci_map_page(gp->pdev,
830 virt_to_page(new_skb->data),
831 offset_in_page(new_skb->data),
832 RX_BUF_ALLOC_SIZE(gp),
833 PCI_DMA_FROMDEVICE));
834 skb_reserve(new_skb, RX_OFFSET);
836 /* Trim the original skb for the netif. */
839 struct sk_buff *copy_skb = dev_alloc_skb(len + 2);
841 if (copy_skb == NULL) {
846 copy_skb->dev = gp->dev;
847 skb_reserve(copy_skb, 2);
848 skb_put(copy_skb, len);
849 pci_dma_sync_single_for_cpu(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
850 memcpy(copy_skb->data, skb->data, len);
851 pci_dma_sync_single_for_device(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
853 /* We'll reuse the original ring buffer. */
857 skb->csum = ntohs((status & RXDCTRL_TCPCSUM) ^ 0xffff);
858 skb->ip_summed = CHECKSUM_HW;
859 skb->protocol = eth_type_trans(skb, gp->dev);
861 netif_receive_skb(skb);
863 gp->net_stats.rx_packets++;
864 gp->net_stats.rx_bytes += len;
865 gp->dev->last_rx = jiffies;
868 entry = NEXT_RX(entry);
871 gem_post_rxds(gp, entry);
876 printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n",
882 static int gem_poll(struct net_device *dev, int *budget)
884 struct gem *gp = dev->priv;
888 * NAPI locking nightmare: See comment at head of driver
890 spin_lock_irqsave(&gp->lock, flags);
893 int work_to_do, work_done;
895 /* Handle anomalies */
896 if (gp->status & GREG_STAT_ABNORMAL) {
897 if (gem_abnormal_irq(dev, gp, gp->status))
901 /* Run TX completion thread */
902 spin_lock(&gp->tx_lock);
903 gem_tx(dev, gp, gp->status);
904 spin_unlock(&gp->tx_lock);
906 spin_unlock_irqrestore(&gp->lock, flags);
908 /* Run RX thread. We don't use any locking here,
909 * code willing to do bad things - like cleaning the
910 * rx ring - must call netif_poll_disable(), which
911 * schedule_timeout()'s if polling is already disabled.
913 work_to_do = min(*budget, dev->quota);
915 work_done = gem_rx(gp, work_to_do);
917 *budget -= work_done;
918 dev->quota -= work_done;
920 if (work_done >= work_to_do)
923 spin_lock_irqsave(&gp->lock, flags);
925 gp->status = readl(gp->regs + GREG_STAT);
926 } while (gp->status & GREG_STAT_NAPI);
928 __netif_rx_complete(dev);
931 spin_unlock_irqrestore(&gp->lock, flags);
935 static irqreturn_t gem_interrupt(int irq, void *dev_id, struct pt_regs *regs)
937 struct net_device *dev = dev_id;
938 struct gem *gp = dev->priv;
941 /* Swallow interrupts when shutting the chip down, though
942 * that shouldn't happen, we should have done free_irq() at
948 spin_lock_irqsave(&gp->lock, flags);
950 if (netif_rx_schedule_prep(dev)) {
951 u32 gem_status = readl(gp->regs + GREG_STAT);
953 if (gem_status == 0) {
954 netif_poll_enable(dev);
955 spin_unlock_irqrestore(&gp->lock, flags);
958 gp->status = gem_status;
959 gem_disable_ints(gp);
960 __netif_rx_schedule(dev);
963 spin_unlock_irqrestore(&gp->lock, flags);
965 /* If polling was disabled at the time we received that
966 * interrupt, we may return IRQ_HANDLED here while we
967 * should return IRQ_NONE. No big deal...
972 #ifdef CONFIG_NET_POLL_CONTROLLER
973 static void gem_poll_controller(struct net_device *dev)
975 /* gem_interrupt is safe to reentrance so no need
976 * to disable_irq here.
978 gem_interrupt(dev->irq, dev, NULL);
982 static void gem_tx_timeout(struct net_device *dev)
984 struct gem *gp = dev->priv;
986 printk(KERN_ERR "%s: transmit timed out, resetting\n", dev->name);
988 printk("%s: hrm.. hw not running !\n", dev->name);
991 printk(KERN_ERR "%s: TX_STATE[%08x:%08x:%08x]\n",
993 readl(gp->regs + TXDMA_CFG),
994 readl(gp->regs + MAC_TXSTAT),
995 readl(gp->regs + MAC_TXCFG));
996 printk(KERN_ERR "%s: RX_STATE[%08x:%08x:%08x]\n",
998 readl(gp->regs + RXDMA_CFG),
999 readl(gp->regs + MAC_RXSTAT),
1000 readl(gp->regs + MAC_RXCFG));
1002 spin_lock_irq(&gp->lock);
1003 spin_lock(&gp->tx_lock);
1005 gp->reset_task_pending = 1;
1006 schedule_work(&gp->reset_task);
1008 spin_unlock(&gp->tx_lock);
1009 spin_unlock_irq(&gp->lock);
1012 static __inline__ int gem_intme(int entry)
1014 /* Algorithm: IRQ every 1/2 of descriptors. */
1015 if (!(entry & ((TX_RING_SIZE>>1)-1)))
1021 static int gem_start_xmit(struct sk_buff *skb, struct net_device *dev)
1023 struct gem *gp = dev->priv;
1026 unsigned long flags;
1029 if (skb->ip_summed == CHECKSUM_HW) {
1030 u64 csum_start_off, csum_stuff_off;
1032 csum_start_off = (u64) (skb->h.raw - skb->data);
1033 csum_stuff_off = (u64) ((skb->h.raw + skb->csum) - skb->data);
1035 ctrl = (TXDCTRL_CENAB |
1036 (csum_start_off << 15) |
1037 (csum_stuff_off << 21));
1040 local_irq_save(flags);
1041 if (!spin_trylock(&gp->tx_lock)) {
1042 /* Tell upper layer to requeue */
1043 local_irq_restore(flags);
1044 return NETDEV_TX_LOCKED;
1046 /* We raced with gem_do_stop() */
1048 spin_unlock_irqrestore(&gp->tx_lock, flags);
1049 return NETDEV_TX_BUSY;
1052 /* This is a hard error, log it. */
1053 if (TX_BUFFS_AVAIL(gp) <= (skb_shinfo(skb)->nr_frags + 1)) {
1054 netif_stop_queue(dev);
1055 spin_unlock_irqrestore(&gp->tx_lock, flags);
1056 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
1058 return NETDEV_TX_BUSY;
1062 gp->tx_skbs[entry] = skb;
1064 if (skb_shinfo(skb)->nr_frags == 0) {
1065 struct gem_txd *txd = &gp->init_block->txd[entry];
1070 mapping = pci_map_page(gp->pdev,
1071 virt_to_page(skb->data),
1072 offset_in_page(skb->data),
1073 len, PCI_DMA_TODEVICE);
1074 ctrl |= TXDCTRL_SOF | TXDCTRL_EOF | len;
1075 if (gem_intme(entry))
1076 ctrl |= TXDCTRL_INTME;
1077 txd->buffer = cpu_to_le64(mapping);
1079 txd->control_word = cpu_to_le64(ctrl);
1080 entry = NEXT_TX(entry);
1082 struct gem_txd *txd;
1085 dma_addr_t first_mapping;
1086 int frag, first_entry = entry;
1089 if (gem_intme(entry))
1090 intme |= TXDCTRL_INTME;
1092 /* We must give this initial chunk to the device last.
1093 * Otherwise we could race with the device.
1095 first_len = skb_headlen(skb);
1096 first_mapping = pci_map_page(gp->pdev, virt_to_page(skb->data),
1097 offset_in_page(skb->data),
1098 first_len, PCI_DMA_TODEVICE);
1099 entry = NEXT_TX(entry);
1101 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
1102 skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
1107 len = this_frag->size;
1108 mapping = pci_map_page(gp->pdev,
1110 this_frag->page_offset,
1111 len, PCI_DMA_TODEVICE);
1113 if (frag == skb_shinfo(skb)->nr_frags - 1)
1114 this_ctrl |= TXDCTRL_EOF;
1116 txd = &gp->init_block->txd[entry];
1117 txd->buffer = cpu_to_le64(mapping);
1119 txd->control_word = cpu_to_le64(this_ctrl | len);
1121 if (gem_intme(entry))
1122 intme |= TXDCTRL_INTME;
1124 entry = NEXT_TX(entry);
1126 txd = &gp->init_block->txd[first_entry];
1127 txd->buffer = cpu_to_le64(first_mapping);
1130 cpu_to_le64(ctrl | TXDCTRL_SOF | intme | first_len);
1134 if (TX_BUFFS_AVAIL(gp) <= (MAX_SKB_FRAGS + 1))
1135 netif_stop_queue(dev);
1137 if (netif_msg_tx_queued(gp))
1138 printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
1139 dev->name, entry, skb->len);
1141 writel(gp->tx_new, gp->regs + TXDMA_KICK);
1142 spin_unlock_irqrestore(&gp->tx_lock, flags);
1144 dev->trans_start = jiffies;
1146 return NETDEV_TX_OK;
1149 #define STOP_TRIES 32
1151 /* Must be invoked under gp->lock and gp->tx_lock. */
1152 static void gem_reset(struct gem *gp)
1157 /* Make sure we won't get any more interrupts */
1158 writel(0xffffffff, gp->regs + GREG_IMASK);
1160 /* Reset the chip */
1161 writel(gp->swrst_base | GREG_SWRST_TXRST | GREG_SWRST_RXRST,
1162 gp->regs + GREG_SWRST);
1168 val = readl(gp->regs + GREG_SWRST);
1171 } while (val & (GREG_SWRST_TXRST | GREG_SWRST_RXRST));
1174 printk(KERN_ERR "%s: SW reset is ghetto.\n", gp->dev->name);
1177 /* Must be invoked under gp->lock and gp->tx_lock. */
1178 static void gem_start_dma(struct gem *gp)
1182 /* We are ready to rock, turn everything on. */
1183 val = readl(gp->regs + TXDMA_CFG);
1184 writel(val | TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG);
1185 val = readl(gp->regs + RXDMA_CFG);
1186 writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
1187 val = readl(gp->regs + MAC_TXCFG);
1188 writel(val | MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG);
1189 val = readl(gp->regs + MAC_RXCFG);
1190 writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
1192 (void) readl(gp->regs + MAC_RXCFG);
1195 gem_enable_ints(gp);
1197 writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
1200 /* Must be invoked under gp->lock and gp->tx_lock. DMA won't be
1201 * actually stopped before about 4ms tho ...
1203 static void gem_stop_dma(struct gem *gp)
1207 /* We are done rocking, turn everything off. */
1208 val = readl(gp->regs + TXDMA_CFG);
1209 writel(val & ~TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG);
1210 val = readl(gp->regs + RXDMA_CFG);
1211 writel(val & ~RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
1212 val = readl(gp->regs + MAC_TXCFG);
1213 writel(val & ~MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG);
1214 val = readl(gp->regs + MAC_RXCFG);
1215 writel(val & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
1217 (void) readl(gp->regs + MAC_RXCFG);
1219 /* Need to wait a bit ... done by the caller */
1223 /* Must be invoked under gp->lock and gp->tx_lock. */
1224 // XXX dbl check what that function should do when called on PCS PHY
1225 static void gem_begin_auto_negotiation(struct gem *gp, struct ethtool_cmd *ep)
1227 u32 advertise, features;
1232 if (gp->phy_type != phy_mii_mdio0 &&
1233 gp->phy_type != phy_mii_mdio1)
1236 /* Setup advertise */
1237 if (found_mii_phy(gp))
1238 features = gp->phy_mii.def->features;
1242 advertise = features & ADVERTISE_MASK;
1243 if (gp->phy_mii.advertising != 0)
1244 advertise &= gp->phy_mii.advertising;
1246 autoneg = gp->want_autoneg;
1247 speed = gp->phy_mii.speed;
1248 duplex = gp->phy_mii.duplex;
1250 /* Setup link parameters */
1253 if (ep->autoneg == AUTONEG_ENABLE) {
1254 advertise = ep->advertising;
1259 duplex = ep->duplex;
1263 /* Sanitize settings based on PHY capabilities */
1264 if ((features & SUPPORTED_Autoneg) == 0)
1266 if (speed == SPEED_1000 &&
1267 !(features & (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)))
1269 if (speed == SPEED_100 &&
1270 !(features & (SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full)))
1272 if (duplex == DUPLEX_FULL &&
1273 !(features & (SUPPORTED_1000baseT_Full |
1274 SUPPORTED_100baseT_Full |
1275 SUPPORTED_10baseT_Full)))
1276 duplex = DUPLEX_HALF;
1280 /* If we are asleep, we don't try to actually setup the PHY, we
1281 * just store the settings
1284 gp->phy_mii.autoneg = gp->want_autoneg = autoneg;
1285 gp->phy_mii.speed = speed;
1286 gp->phy_mii.duplex = duplex;
1290 /* Configure PHY & start aneg */
1291 gp->want_autoneg = autoneg;
1293 if (found_mii_phy(gp))
1294 gp->phy_mii.def->ops->setup_aneg(&gp->phy_mii, advertise);
1295 gp->lstate = link_aneg;
1297 if (found_mii_phy(gp))
1298 gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, speed, duplex);
1299 gp->lstate = link_force_ok;
1303 gp->timer_ticks = 0;
1304 mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
1307 /* A link-up condition has occurred, initialize and enable the
1310 * Must be invoked under gp->lock and gp->tx_lock.
1312 static int gem_set_link_modes(struct gem *gp)
1315 int full_duplex, speed, pause;
1321 if (found_mii_phy(gp)) {
1322 if (gp->phy_mii.def->ops->read_link(&gp->phy_mii))
1324 full_duplex = (gp->phy_mii.duplex == DUPLEX_FULL);
1325 speed = gp->phy_mii.speed;
1326 pause = gp->phy_mii.pause;
1327 } else if (gp->phy_type == phy_serialink ||
1328 gp->phy_type == phy_serdes) {
1329 u32 pcs_lpa = readl(gp->regs + PCS_MIILP);
1331 if (pcs_lpa & PCS_MIIADV_FD)
1336 if (netif_msg_link(gp))
1337 printk(KERN_INFO "%s: Link is up at %d Mbps, %s-duplex.\n",
1338 gp->dev->name, speed, (full_duplex ? "full" : "half"));
1343 val = (MAC_TXCFG_EIPG0 | MAC_TXCFG_NGU);
1345 val |= (MAC_TXCFG_ICS | MAC_TXCFG_ICOLL);
1347 /* MAC_TXCFG_NBO must be zero. */
1349 writel(val, gp->regs + MAC_TXCFG);
1351 val = (MAC_XIFCFG_OE | MAC_XIFCFG_LLED);
1353 (gp->phy_type == phy_mii_mdio0 ||
1354 gp->phy_type == phy_mii_mdio1)) {
1355 val |= MAC_XIFCFG_DISE;
1356 } else if (full_duplex) {
1357 val |= MAC_XIFCFG_FLED;
1360 if (speed == SPEED_1000)
1361 val |= (MAC_XIFCFG_GMII);
1363 writel(val, gp->regs + MAC_XIFCFG);
1365 /* If gigabit and half-duplex, enable carrier extension
1366 * mode. Else, disable it.
1368 if (speed == SPEED_1000 && !full_duplex) {
1369 val = readl(gp->regs + MAC_TXCFG);
1370 writel(val | MAC_TXCFG_TCE, gp->regs + MAC_TXCFG);
1372 val = readl(gp->regs + MAC_RXCFG);
1373 writel(val | MAC_RXCFG_RCE, gp->regs + MAC_RXCFG);
1375 val = readl(gp->regs + MAC_TXCFG);
1376 writel(val & ~MAC_TXCFG_TCE, gp->regs + MAC_TXCFG);
1378 val = readl(gp->regs + MAC_RXCFG);
1379 writel(val & ~MAC_RXCFG_RCE, gp->regs + MAC_RXCFG);
1382 if (gp->phy_type == phy_serialink ||
1383 gp->phy_type == phy_serdes) {
1384 u32 pcs_lpa = readl(gp->regs + PCS_MIILP);
1386 if (pcs_lpa & (PCS_MIIADV_SP | PCS_MIIADV_AP))
1390 if (netif_msg_link(gp)) {
1392 printk(KERN_INFO "%s: Pause is enabled "
1393 "(rxfifo: %d off: %d on: %d)\n",
1399 printk(KERN_INFO "%s: Pause is disabled\n",
1405 writel(512, gp->regs + MAC_STIME);
1407 writel(64, gp->regs + MAC_STIME);
1408 val = readl(gp->regs + MAC_MCCFG);
1410 val |= (MAC_MCCFG_SPE | MAC_MCCFG_RPE);
1412 val &= ~(MAC_MCCFG_SPE | MAC_MCCFG_RPE);
1413 writel(val, gp->regs + MAC_MCCFG);
1420 /* Must be invoked under gp->lock and gp->tx_lock. */
1421 static int gem_mdio_link_not_up(struct gem *gp)
1423 switch (gp->lstate) {
1424 case link_force_ret:
1425 if (netif_msg_link(gp))
1426 printk(KERN_INFO "%s: Autoneg failed again, keeping"
1427 " forced mode\n", gp->dev->name);
1428 gp->phy_mii.def->ops->setup_forced(&gp->phy_mii,
1429 gp->last_forced_speed, DUPLEX_HALF);
1430 gp->timer_ticks = 5;
1431 gp->lstate = link_force_ok;
1434 /* We try forced modes after a failed aneg only on PHYs that don't
1435 * have "magic_aneg" bit set, which means they internally do the
1436 * while forced-mode thingy. On these, we just restart aneg
1438 if (gp->phy_mii.def->magic_aneg)
1440 if (netif_msg_link(gp))
1441 printk(KERN_INFO "%s: switching to forced 100bt\n",
1443 /* Try forced modes. */
1444 gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, SPEED_100,
1446 gp->timer_ticks = 5;
1447 gp->lstate = link_force_try;
1449 case link_force_try:
1450 /* Downgrade from 100 to 10 Mbps if necessary.
1451 * If already at 10Mbps, warn user about the
1452 * situation every 10 ticks.
1454 if (gp->phy_mii.speed == SPEED_100) {
1455 gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, SPEED_10,
1457 gp->timer_ticks = 5;
1458 if (netif_msg_link(gp))
1459 printk(KERN_INFO "%s: switching to forced 10bt\n",
1469 static void gem_link_timer(unsigned long data)
1471 struct gem *gp = (struct gem *) data;
1472 int restart_aneg = 0;
1477 spin_lock_irq(&gp->lock);
1478 spin_lock(&gp->tx_lock);
1481 /* If the reset task is still pending, we just
1482 * reschedule the link timer
1484 if (gp->reset_task_pending)
1487 if (gp->phy_type == phy_serialink ||
1488 gp->phy_type == phy_serdes) {
1489 u32 val = readl(gp->regs + PCS_MIISTAT);
1491 if (!(val & PCS_MIISTAT_LS))
1492 val = readl(gp->regs + PCS_MIISTAT);
1494 if ((val & PCS_MIISTAT_LS) != 0) {
1495 gp->lstate = link_up;
1496 netif_carrier_on(gp->dev);
1497 (void)gem_set_link_modes(gp);
1501 if (found_mii_phy(gp) && gp->phy_mii.def->ops->poll_link(&gp->phy_mii)) {
1502 /* Ok, here we got a link. If we had it due to a forced
1503 * fallback, and we were configured for autoneg, we do
1504 * retry a short autoneg pass. If you know your hub is
1505 * broken, use ethtool ;)
1507 if (gp->lstate == link_force_try && gp->want_autoneg) {
1508 gp->lstate = link_force_ret;
1509 gp->last_forced_speed = gp->phy_mii.speed;
1510 gp->timer_ticks = 5;
1511 if (netif_msg_link(gp))
1512 printk(KERN_INFO "%s: Got link after fallback, retrying"
1513 " autoneg once...\n", gp->dev->name);
1514 gp->phy_mii.def->ops->setup_aneg(&gp->phy_mii, gp->phy_mii.advertising);
1515 } else if (gp->lstate != link_up) {
1516 gp->lstate = link_up;
1517 netif_carrier_on(gp->dev);
1518 if (gem_set_link_modes(gp))
1522 /* If the link was previously up, we restart the
1525 if (gp->lstate == link_up) {
1526 gp->lstate = link_down;
1527 if (netif_msg_link(gp))
1528 printk(KERN_INFO "%s: Link down\n",
1530 netif_carrier_off(gp->dev);
1531 gp->reset_task_pending = 1;
1532 schedule_work(&gp->reset_task);
1534 } else if (++gp->timer_ticks > 10) {
1535 if (found_mii_phy(gp))
1536 restart_aneg = gem_mdio_link_not_up(gp);
1542 gem_begin_auto_negotiation(gp, NULL);
1546 mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
1549 spin_unlock(&gp->tx_lock);
1550 spin_unlock_irq(&gp->lock);
1553 /* Must be invoked under gp->lock and gp->tx_lock. */
1554 static void gem_clean_rings(struct gem *gp)
1556 struct gem_init_block *gb = gp->init_block;
1557 struct sk_buff *skb;
1559 dma_addr_t dma_addr;
1561 for (i = 0; i < RX_RING_SIZE; i++) {
1562 struct gem_rxd *rxd;
1565 if (gp->rx_skbs[i] != NULL) {
1566 skb = gp->rx_skbs[i];
1567 dma_addr = le64_to_cpu(rxd->buffer);
1568 pci_unmap_page(gp->pdev, dma_addr,
1569 RX_BUF_ALLOC_SIZE(gp),
1570 PCI_DMA_FROMDEVICE);
1571 dev_kfree_skb_any(skb);
1572 gp->rx_skbs[i] = NULL;
1574 rxd->status_word = 0;
1579 for (i = 0; i < TX_RING_SIZE; i++) {
1580 if (gp->tx_skbs[i] != NULL) {
1581 struct gem_txd *txd;
1584 skb = gp->tx_skbs[i];
1585 gp->tx_skbs[i] = NULL;
1587 for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
1588 int ent = i & (TX_RING_SIZE - 1);
1590 txd = &gb->txd[ent];
1591 dma_addr = le64_to_cpu(txd->buffer);
1592 pci_unmap_page(gp->pdev, dma_addr,
1593 le64_to_cpu(txd->control_word) &
1594 TXDCTRL_BUFSZ, PCI_DMA_TODEVICE);
1596 if (frag != skb_shinfo(skb)->nr_frags)
1599 dev_kfree_skb_any(skb);
1604 /* Must be invoked under gp->lock and gp->tx_lock. */
1605 static void gem_init_rings(struct gem *gp)
1607 struct gem_init_block *gb = gp->init_block;
1608 struct net_device *dev = gp->dev;
1610 dma_addr_t dma_addr;
1612 gp->rx_new = gp->rx_old = gp->tx_new = gp->tx_old = 0;
1614 gem_clean_rings(gp);
1616 gp->rx_buf_sz = max(dev->mtu + ETH_HLEN + VLAN_HLEN,
1617 (unsigned)VLAN_ETH_FRAME_LEN);
1619 for (i = 0; i < RX_RING_SIZE; i++) {
1620 struct sk_buff *skb;
1621 struct gem_rxd *rxd = &gb->rxd[i];
1623 skb = gem_alloc_skb(RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC);
1626 rxd->status_word = 0;
1630 gp->rx_skbs[i] = skb;
1632 skb_put(skb, (gp->rx_buf_sz + RX_OFFSET));
1633 dma_addr = pci_map_page(gp->pdev,
1634 virt_to_page(skb->data),
1635 offset_in_page(skb->data),
1636 RX_BUF_ALLOC_SIZE(gp),
1637 PCI_DMA_FROMDEVICE);
1638 rxd->buffer = cpu_to_le64(dma_addr);
1640 rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
1641 skb_reserve(skb, RX_OFFSET);
1644 for (i = 0; i < TX_RING_SIZE; i++) {
1645 struct gem_txd *txd = &gb->txd[i];
1647 txd->control_word = 0;
1654 /* Init PHY interface and start link poll state machine */
1655 static void gem_init_phy(struct gem *gp)
1659 /* Revert MIF CFG setting done on stop_phy */
1660 mifcfg = readl(gp->regs + MIF_CFG);
1661 mifcfg &= ~MIF_CFG_BBMODE;
1662 writel(mifcfg, gp->regs + MIF_CFG);
1664 if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) {
1667 /* Those delay sucks, the HW seem to love them though, I'll
1668 * serisouly consider breaking some locks here to be able
1669 * to schedule instead
1671 for (i = 0; i < 3; i++) {
1672 #ifdef CONFIG_PPC_PMAC
1673 pmac_call_feature(PMAC_FTR_GMAC_PHY_RESET, gp->of_node, 0, 0);
1676 /* Some PHYs used by apple have problem getting back to us,
1677 * we do an additional reset here
1679 phy_write(gp, MII_BMCR, BMCR_RESET);
1681 if (phy_read(gp, MII_BMCR) != 0xffff)
1684 printk(KERN_WARNING "%s: GMAC PHY not responding !\n",
1689 if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
1690 gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) {
1693 /* Init datapath mode register. */
1694 if (gp->phy_type == phy_mii_mdio0 ||
1695 gp->phy_type == phy_mii_mdio1) {
1696 val = PCS_DMODE_MGM;
1697 } else if (gp->phy_type == phy_serialink) {
1698 val = PCS_DMODE_SM | PCS_DMODE_GMOE;
1700 val = PCS_DMODE_ESM;
1703 writel(val, gp->regs + PCS_DMODE);
1706 if (gp->phy_type == phy_mii_mdio0 ||
1707 gp->phy_type == phy_mii_mdio1) {
1708 // XXX check for errors
1709 mii_phy_probe(&gp->phy_mii, gp->mii_phy_addr);
1712 if (gp->phy_mii.def && gp->phy_mii.def->ops->init)
1713 gp->phy_mii.def->ops->init(&gp->phy_mii);
1718 /* Reset PCS unit. */
1719 val = readl(gp->regs + PCS_MIICTRL);
1720 val |= PCS_MIICTRL_RST;
1721 writeb(val, gp->regs + PCS_MIICTRL);
1724 while (readl(gp->regs + PCS_MIICTRL) & PCS_MIICTRL_RST) {
1730 printk(KERN_WARNING "%s: PCS reset bit would not clear.\n",
1733 /* Make sure PCS is disabled while changing advertisement
1736 val = readl(gp->regs + PCS_CFG);
1737 val &= ~(PCS_CFG_ENABLE | PCS_CFG_TO);
1738 writel(val, gp->regs + PCS_CFG);
1740 /* Advertise all capabilities except assymetric
1743 val = readl(gp->regs + PCS_MIIADV);
1744 val |= (PCS_MIIADV_FD | PCS_MIIADV_HD |
1745 PCS_MIIADV_SP | PCS_MIIADV_AP);
1746 writel(val, gp->regs + PCS_MIIADV);
1748 /* Enable and restart auto-negotiation, disable wrapback/loopback,
1749 * and re-enable PCS.
1751 val = readl(gp->regs + PCS_MIICTRL);
1752 val |= (PCS_MIICTRL_RAN | PCS_MIICTRL_ANE);
1753 val &= ~PCS_MIICTRL_WB;
1754 writel(val, gp->regs + PCS_MIICTRL);
1756 val = readl(gp->regs + PCS_CFG);
1757 val |= PCS_CFG_ENABLE;
1758 writel(val, gp->regs + PCS_CFG);
1760 /* Make sure serialink loopback is off. The meaning
1761 * of this bit is logically inverted based upon whether
1762 * you are in Serialink or SERDES mode.
1764 val = readl(gp->regs + PCS_SCTRL);
1765 if (gp->phy_type == phy_serialink)
1766 val &= ~PCS_SCTRL_LOOP;
1768 val |= PCS_SCTRL_LOOP;
1769 writel(val, gp->regs + PCS_SCTRL);
1772 /* Default aneg parameters */
1773 gp->timer_ticks = 0;
1774 gp->lstate = link_down;
1775 netif_carrier_off(gp->dev);
1777 /* Can I advertise gigabit here ? I'd need BCM PHY docs... */
1778 spin_lock_irq(&gp->lock);
1779 gem_begin_auto_negotiation(gp, NULL);
1780 spin_unlock_irq(&gp->lock);
1783 /* Must be invoked under gp->lock and gp->tx_lock. */
1784 static void gem_init_dma(struct gem *gp)
1786 u64 desc_dma = (u64) gp->gblock_dvma;
1789 val = (TXDMA_CFG_BASE | (0x7ff << 10) | TXDMA_CFG_PMODE);
1790 writel(val, gp->regs + TXDMA_CFG);
1792 writel(desc_dma >> 32, gp->regs + TXDMA_DBHI);
1793 writel(desc_dma & 0xffffffff, gp->regs + TXDMA_DBLOW);
1794 desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd));
1796 writel(0, gp->regs + TXDMA_KICK);
1798 val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) |
1799 ((14 / 2) << 13) | RXDMA_CFG_FTHRESH_128);
1800 writel(val, gp->regs + RXDMA_CFG);
1802 writel(desc_dma >> 32, gp->regs + RXDMA_DBHI);
1803 writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW);
1805 writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
1807 val = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF);
1808 val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON);
1809 writel(val, gp->regs + RXDMA_PTHRESH);
1811 if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN)
1812 writel(((5 & RXDMA_BLANK_IPKTS) |
1813 ((8 << 12) & RXDMA_BLANK_ITIME)),
1814 gp->regs + RXDMA_BLANK);
1816 writel(((5 & RXDMA_BLANK_IPKTS) |
1817 ((4 << 12) & RXDMA_BLANK_ITIME)),
1818 gp->regs + RXDMA_BLANK);
1821 /* Must be invoked under gp->lock and gp->tx_lock. */
1822 static u32 gem_setup_multicast(struct gem *gp)
1827 if ((gp->dev->flags & IFF_ALLMULTI) ||
1828 (gp->dev->mc_count > 256)) {
1829 for (i=0; i<16; i++)
1830 writel(0xffff, gp->regs + MAC_HASH0 + (i << 2));
1831 rxcfg |= MAC_RXCFG_HFE;
1832 } else if (gp->dev->flags & IFF_PROMISC) {
1833 rxcfg |= MAC_RXCFG_PROM;
1837 struct dev_mc_list *dmi = gp->dev->mc_list;
1840 for (i = 0; i < 16; i++)
1843 for (i = 0; i < gp->dev->mc_count; i++) {
1844 char *addrs = dmi->dmi_addr;
1851 crc = ether_crc_le(6, addrs);
1853 hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
1855 for (i=0; i<16; i++)
1856 writel(hash_table[i], gp->regs + MAC_HASH0 + (i << 2));
1857 rxcfg |= MAC_RXCFG_HFE;
1863 /* Must be invoked under gp->lock and gp->tx_lock. */
1864 static void gem_init_mac(struct gem *gp)
1866 unsigned char *e = &gp->dev->dev_addr[0];
1868 writel(0x1bf0, gp->regs + MAC_SNDPAUSE);
1870 writel(0x00, gp->regs + MAC_IPG0);
1871 writel(0x08, gp->regs + MAC_IPG1);
1872 writel(0x04, gp->regs + MAC_IPG2);
1873 writel(0x40, gp->regs + MAC_STIME);
1874 writel(0x40, gp->regs + MAC_MINFSZ);
1876 /* Ethernet payload + header + FCS + optional VLAN tag. */
1877 writel(0x20000000 | (gp->rx_buf_sz + 4), gp->regs + MAC_MAXFSZ);
1879 writel(0x07, gp->regs + MAC_PASIZE);
1880 writel(0x04, gp->regs + MAC_JAMSIZE);
1881 writel(0x10, gp->regs + MAC_ATTLIM);
1882 writel(0x8808, gp->regs + MAC_MCTYPE);
1884 writel((e[5] | (e[4] << 8)) & 0x3ff, gp->regs + MAC_RANDSEED);
1886 writel((e[4] << 8) | e[5], gp->regs + MAC_ADDR0);
1887 writel((e[2] << 8) | e[3], gp->regs + MAC_ADDR1);
1888 writel((e[0] << 8) | e[1], gp->regs + MAC_ADDR2);
1890 writel(0, gp->regs + MAC_ADDR3);
1891 writel(0, gp->regs + MAC_ADDR4);
1892 writel(0, gp->regs + MAC_ADDR5);
1894 writel(0x0001, gp->regs + MAC_ADDR6);
1895 writel(0xc200, gp->regs + MAC_ADDR7);
1896 writel(0x0180, gp->regs + MAC_ADDR8);
1898 writel(0, gp->regs + MAC_AFILT0);
1899 writel(0, gp->regs + MAC_AFILT1);
1900 writel(0, gp->regs + MAC_AFILT2);
1901 writel(0, gp->regs + MAC_AF21MSK);
1902 writel(0, gp->regs + MAC_AF0MSK);
1904 gp->mac_rx_cfg = gem_setup_multicast(gp);
1906 gp->mac_rx_cfg |= MAC_RXCFG_SFCS;
1908 writel(0, gp->regs + MAC_NCOLL);
1909 writel(0, gp->regs + MAC_FASUCC);
1910 writel(0, gp->regs + MAC_ECOLL);
1911 writel(0, gp->regs + MAC_LCOLL);
1912 writel(0, gp->regs + MAC_DTIMER);
1913 writel(0, gp->regs + MAC_PATMPS);
1914 writel(0, gp->regs + MAC_RFCTR);
1915 writel(0, gp->regs + MAC_LERR);
1916 writel(0, gp->regs + MAC_AERR);
1917 writel(0, gp->regs + MAC_FCSERR);
1918 writel(0, gp->regs + MAC_RXCVERR);
1920 /* Clear RX/TX/MAC/XIF config, we will set these up and enable
1921 * them once a link is established.
1923 writel(0, gp->regs + MAC_TXCFG);
1924 writel(gp->mac_rx_cfg, gp->regs + MAC_RXCFG);
1925 writel(0, gp->regs + MAC_MCCFG);
1926 writel(0, gp->regs + MAC_XIFCFG);
1928 /* Setup MAC interrupts. We want to get all of the interesting
1929 * counter expiration events, but we do not want to hear about
1930 * normal rx/tx as the DMA engine tells us that.
1932 writel(MAC_TXSTAT_XMIT, gp->regs + MAC_TXMASK);
1933 writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK);
1935 /* Don't enable even the PAUSE interrupts for now, we
1936 * make no use of those events other than to record them.
1938 writel(0xffffffff, gp->regs + MAC_MCMASK);
1940 /* Don't enable GEM's WOL in normal operations
1943 writel(0, gp->regs + WOL_WAKECSR);
1946 /* Must be invoked under gp->lock and gp->tx_lock. */
1947 static void gem_init_pause_thresholds(struct gem *gp)
1951 /* Calculate pause thresholds. Setting the OFF threshold to the
1952 * full RX fifo size effectively disables PAUSE generation which
1953 * is what we do for 10/100 only GEMs which have FIFOs too small
1954 * to make real gains from PAUSE.
1956 if (gp->rx_fifo_sz <= (2 * 1024)) {
1957 gp->rx_pause_off = gp->rx_pause_on = gp->rx_fifo_sz;
1959 int max_frame = (gp->rx_buf_sz + 4 + 64) & ~63;
1960 int off = (gp->rx_fifo_sz - (max_frame * 2));
1961 int on = off - max_frame;
1963 gp->rx_pause_off = off;
1964 gp->rx_pause_on = on;
1968 /* Configure the chip "burst" DMA mode & enable some
1969 * HW bug fixes on Apple version
1972 if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE)
1973 cfg |= GREG_CFG_RONPAULBIT | GREG_CFG_ENBUG2FIX;
1974 #if !defined(CONFIG_SPARC64) && !defined(CONFIG_ALPHA)
1975 cfg |= GREG_CFG_IBURST;
1977 cfg |= ((31 << 1) & GREG_CFG_TXDMALIM);
1978 cfg |= ((31 << 6) & GREG_CFG_RXDMALIM);
1979 writel(cfg, gp->regs + GREG_CFG);
1981 /* If Infinite Burst didn't stick, then use different
1982 * thresholds (and Apple bug fixes don't exist)
1984 if (!(readl(gp->regs + GREG_CFG) & GREG_CFG_IBURST)) {
1985 cfg = ((2 << 1) & GREG_CFG_TXDMALIM);
1986 cfg |= ((8 << 6) & GREG_CFG_RXDMALIM);
1987 writel(cfg, gp->regs + GREG_CFG);
1991 static int gem_check_invariants(struct gem *gp)
1993 struct pci_dev *pdev = gp->pdev;
1996 /* On Apple's sungem, we can't rely on registers as the chip
1997 * was been powered down by the firmware. The PHY is looked
2000 if (pdev->vendor == PCI_VENDOR_ID_APPLE) {
2001 gp->phy_type = phy_mii_mdio0;
2002 gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64;
2003 gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64;
2006 mif_cfg = readl(gp->regs + MIF_CFG);
2007 mif_cfg &= ~(MIF_CFG_PSELECT|MIF_CFG_POLL|MIF_CFG_BBMODE|MIF_CFG_MDI1);
2008 mif_cfg |= MIF_CFG_MDI0;
2009 writel(mif_cfg, gp->regs + MIF_CFG);
2010 writel(PCS_DMODE_MGM, gp->regs + PCS_DMODE);
2011 writel(MAC_XIFCFG_OE, gp->regs + MAC_XIFCFG);
2013 /* We hard-code the PHY address so we can properly bring it out of
2014 * reset later on, we can't really probe it at this point, though
2015 * that isn't an issue.
2017 if (gp->pdev->device == PCI_DEVICE_ID_APPLE_K2_GMAC)
2018 gp->mii_phy_addr = 1;
2020 gp->mii_phy_addr = 0;
2025 mif_cfg = readl(gp->regs + MIF_CFG);
2027 if (pdev->vendor == PCI_VENDOR_ID_SUN &&
2028 pdev->device == PCI_DEVICE_ID_SUN_RIO_GEM) {
2029 /* One of the MII PHYs _must_ be present
2030 * as this chip has no gigabit PHY.
2032 if ((mif_cfg & (MIF_CFG_MDI0 | MIF_CFG_MDI1)) == 0) {
2033 printk(KERN_ERR PFX "RIO GEM lacks MII phy, mif_cfg[%08x]\n",
2039 /* Determine initial PHY interface type guess. MDIO1 is the
2040 * external PHY and thus takes precedence over MDIO0.
2043 if (mif_cfg & MIF_CFG_MDI1) {
2044 gp->phy_type = phy_mii_mdio1;
2045 mif_cfg |= MIF_CFG_PSELECT;
2046 writel(mif_cfg, gp->regs + MIF_CFG);
2047 } else if (mif_cfg & MIF_CFG_MDI0) {
2048 gp->phy_type = phy_mii_mdio0;
2049 mif_cfg &= ~MIF_CFG_PSELECT;
2050 writel(mif_cfg, gp->regs + MIF_CFG);
2052 gp->phy_type = phy_serialink;
2054 if (gp->phy_type == phy_mii_mdio1 ||
2055 gp->phy_type == phy_mii_mdio0) {
2058 for (i = 0; i < 32; i++) {
2059 gp->mii_phy_addr = i;
2060 if (phy_read(gp, MII_BMCR) != 0xffff)
2064 if (pdev->device != PCI_DEVICE_ID_SUN_GEM) {
2065 printk(KERN_ERR PFX "RIO MII phy will not respond.\n");
2068 gp->phy_type = phy_serdes;
2072 /* Fetch the FIFO configurations now too. */
2073 gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64;
2074 gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64;
2076 if (pdev->vendor == PCI_VENDOR_ID_SUN) {
2077 if (pdev->device == PCI_DEVICE_ID_SUN_GEM) {
2078 if (gp->tx_fifo_sz != (9 * 1024) ||
2079 gp->rx_fifo_sz != (20 * 1024)) {
2080 printk(KERN_ERR PFX "GEM has bogus fifo sizes tx(%d) rx(%d)\n",
2081 gp->tx_fifo_sz, gp->rx_fifo_sz);
2086 if (gp->tx_fifo_sz != (2 * 1024) ||
2087 gp->rx_fifo_sz != (2 * 1024)) {
2088 printk(KERN_ERR PFX "RIO GEM has bogus fifo sizes tx(%d) rx(%d)\n",
2089 gp->tx_fifo_sz, gp->rx_fifo_sz);
2092 gp->swrst_base = (64 / 4) << GREG_SWRST_CACHE_SHIFT;
2099 /* Must be invoked under gp->lock and gp->tx_lock. */
2100 static void gem_reinit_chip(struct gem *gp)
2102 /* Reset the chip */
2105 /* Make sure ints are disabled */
2106 gem_disable_ints(gp);
2108 /* Allocate & setup ring buffers */
2111 /* Configure pause thresholds */
2112 gem_init_pause_thresholds(gp);
2114 /* Init DMA & MAC engines */
2120 /* Must be invoked with no lock held. */
2121 static void gem_stop_phy(struct gem *gp, int wol)
2124 unsigned long flags;
2126 /* Let the chip settle down a bit, it seems that helps
2127 * for sleep mode on some models
2131 /* Make sure we aren't polling PHY status change. We
2132 * don't currently use that feature though
2134 mifcfg = readl(gp->regs + MIF_CFG);
2135 mifcfg &= ~MIF_CFG_POLL;
2136 writel(mifcfg, gp->regs + MIF_CFG);
2138 if (wol && gp->has_wol) {
2139 unsigned char *e = &gp->dev->dev_addr[0];
2142 /* Setup wake-on-lan for MAGIC packet */
2143 writel(MAC_RXCFG_HFE | MAC_RXCFG_SFCS | MAC_RXCFG_ENAB,
2144 gp->regs + MAC_RXCFG);
2145 writel((e[4] << 8) | e[5], gp->regs + WOL_MATCH0);
2146 writel((e[2] << 8) | e[3], gp->regs + WOL_MATCH1);
2147 writel((e[0] << 8) | e[1], gp->regs + WOL_MATCH2);
2149 writel(WOL_MCOUNT_N | WOL_MCOUNT_M, gp->regs + WOL_MCOUNT);
2150 csr = WOL_WAKECSR_ENABLE;
2151 if ((readl(gp->regs + MAC_XIFCFG) & MAC_XIFCFG_GMII) == 0)
2152 csr |= WOL_WAKECSR_MII;
2153 writel(csr, gp->regs + WOL_WAKECSR);
2155 writel(0, gp->regs + MAC_RXCFG);
2156 (void)readl(gp->regs + MAC_RXCFG);
2157 /* Machine sleep will die in strange ways if we
2158 * dont wait a bit here, looks like the chip takes
2159 * some time to really shut down
2164 writel(0, gp->regs + MAC_TXCFG);
2165 writel(0, gp->regs + MAC_XIFCFG);
2166 writel(0, gp->regs + TXDMA_CFG);
2167 writel(0, gp->regs + RXDMA_CFG);
2170 spin_lock_irqsave(&gp->lock, flags);
2171 spin_lock(&gp->tx_lock);
2173 writel(MAC_TXRST_CMD, gp->regs + MAC_TXRST);
2174 writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST);
2175 spin_unlock(&gp->tx_lock);
2176 spin_unlock_irqrestore(&gp->lock, flags);
2178 /* No need to take the lock here */
2180 if (found_mii_phy(gp) && gp->phy_mii.def->ops->suspend)
2181 gp->phy_mii.def->ops->suspend(&gp->phy_mii);
2183 /* According to Apple, we must set the MDIO pins to this begnign
2184 * state or we may 1) eat more current, 2) damage some PHYs
2186 writel(mifcfg | MIF_CFG_BBMODE, gp->regs + MIF_CFG);
2187 writel(0, gp->regs + MIF_BBCLK);
2188 writel(0, gp->regs + MIF_BBDATA);
2189 writel(0, gp->regs + MIF_BBOENAB);
2190 writel(MAC_XIFCFG_GMII | MAC_XIFCFG_LBCK, gp->regs + MAC_XIFCFG);
2191 (void) readl(gp->regs + MAC_XIFCFG);
2196 static int gem_do_start(struct net_device *dev)
2198 struct gem *gp = dev->priv;
2199 unsigned long flags;
2201 spin_lock_irqsave(&gp->lock, flags);
2202 spin_lock(&gp->tx_lock);
2204 /* Enable the cell */
2207 /* Init & setup chip hardware */
2208 gem_reinit_chip(gp);
2212 if (gp->lstate == link_up) {
2213 netif_carrier_on(gp->dev);
2214 gem_set_link_modes(gp);
2217 netif_wake_queue(gp->dev);
2219 spin_unlock(&gp->tx_lock);
2220 spin_unlock_irqrestore(&gp->lock, flags);
2222 if (request_irq(gp->pdev->irq, gem_interrupt,
2223 IRQF_SHARED, dev->name, (void *)dev)) {
2224 printk(KERN_ERR "%s: failed to request irq !\n", gp->dev->name);
2226 spin_lock_irqsave(&gp->lock, flags);
2227 spin_lock(&gp->tx_lock);
2231 gem_clean_rings(gp);
2234 spin_unlock(&gp->tx_lock);
2235 spin_unlock_irqrestore(&gp->lock, flags);
2243 static void gem_do_stop(struct net_device *dev, int wol)
2245 struct gem *gp = dev->priv;
2246 unsigned long flags;
2248 spin_lock_irqsave(&gp->lock, flags);
2249 spin_lock(&gp->tx_lock);
2253 /* Stop netif queue */
2254 netif_stop_queue(dev);
2256 /* Make sure ints are disabled */
2257 gem_disable_ints(gp);
2259 /* We can drop the lock now */
2260 spin_unlock(&gp->tx_lock);
2261 spin_unlock_irqrestore(&gp->lock, flags);
2263 /* If we are going to sleep with WOL */
2270 /* Get rid of rings */
2271 gem_clean_rings(gp);
2273 /* No irq needed anymore */
2274 free_irq(gp->pdev->irq, (void *) dev);
2276 /* Cell not needed neither if no WOL */
2278 spin_lock_irqsave(&gp->lock, flags);
2280 spin_unlock_irqrestore(&gp->lock, flags);
2284 static void gem_reset_task(void *data)
2286 struct gem *gp = (struct gem *) data;
2288 mutex_lock(&gp->pm_mutex);
2290 netif_poll_disable(gp->dev);
2292 spin_lock_irq(&gp->lock);
2293 spin_lock(&gp->tx_lock);
2295 if (gp->running == 0)
2299 netif_stop_queue(gp->dev);
2301 /* Reset the chip & rings */
2302 gem_reinit_chip(gp);
2303 if (gp->lstate == link_up)
2304 gem_set_link_modes(gp);
2305 netif_wake_queue(gp->dev);
2308 gp->reset_task_pending = 0;
2310 spin_unlock(&gp->tx_lock);
2311 spin_unlock_irq(&gp->lock);
2313 netif_poll_enable(gp->dev);
2315 mutex_unlock(&gp->pm_mutex);
2319 static int gem_open(struct net_device *dev)
2321 struct gem *gp = dev->priv;
2324 mutex_lock(&gp->pm_mutex);
2326 /* We need the cell enabled */
2328 rc = gem_do_start(dev);
2329 gp->opened = (rc == 0);
2331 mutex_unlock(&gp->pm_mutex);
2336 static int gem_close(struct net_device *dev)
2338 struct gem *gp = dev->priv;
2340 /* Note: we don't need to call netif_poll_disable() here because
2341 * our caller (dev_close) already did it for us
2344 mutex_lock(&gp->pm_mutex);
2348 gem_do_stop(dev, 0);
2350 mutex_unlock(&gp->pm_mutex);
2356 static int gem_suspend(struct pci_dev *pdev, pm_message_t state)
2358 struct net_device *dev = pci_get_drvdata(pdev);
2359 struct gem *gp = dev->priv;
2360 unsigned long flags;
2362 mutex_lock(&gp->pm_mutex);
2364 netif_poll_disable(dev);
2366 printk(KERN_INFO "%s: suspending, WakeOnLan %s\n",
2368 (gp->wake_on_lan && gp->opened) ? "enabled" : "disabled");
2370 /* Keep the cell enabled during the entire operation */
2371 spin_lock_irqsave(&gp->lock, flags);
2372 spin_lock(&gp->tx_lock);
2374 spin_unlock(&gp->tx_lock);
2375 spin_unlock_irqrestore(&gp->lock, flags);
2377 /* If the driver is opened, we stop the MAC */
2379 /* Stop traffic, mark us closed */
2380 netif_device_detach(dev);
2382 /* Switch off MAC, remember WOL setting */
2383 gp->asleep_wol = gp->wake_on_lan;
2384 gem_do_stop(dev, gp->asleep_wol);
2388 /* Mark us asleep */
2392 /* Stop the link timer */
2393 del_timer_sync(&gp->link_timer);
2395 /* Now we release the mutex to not block the reset task who
2396 * can take it too. We are marked asleep, so there will be no
2399 mutex_unlock(&gp->pm_mutex);
2401 /* Wait for a pending reset task to complete */
2402 while (gp->reset_task_pending)
2404 flush_scheduled_work();
2406 /* Shut the PHY down eventually and setup WOL */
2407 gem_stop_phy(gp, gp->asleep_wol);
2409 /* Make sure bus master is disabled */
2410 pci_disable_device(gp->pdev);
2412 /* Release the cell, no need to take a lock at this point since
2413 * nothing else can happen now
2420 static int gem_resume(struct pci_dev *pdev)
2422 struct net_device *dev = pci_get_drvdata(pdev);
2423 struct gem *gp = dev->priv;
2424 unsigned long flags;
2426 printk(KERN_INFO "%s: resuming\n", dev->name);
2428 mutex_lock(&gp->pm_mutex);
2430 /* Keep the cell enabled during the entire operation, no need to
2431 * take a lock here tho since nothing else can happen while we are
2436 /* Make sure PCI access and bus master are enabled */
2437 if (pci_enable_device(gp->pdev)) {
2438 printk(KERN_ERR "%s: Can't re-enable chip !\n",
2440 /* Put cell and forget it for now, it will be considered as
2441 * still asleep, a new sleep cycle may bring it back
2444 mutex_unlock(&gp->pm_mutex);
2447 pci_set_master(gp->pdev);
2449 /* Reset everything */
2452 /* Mark us woken up */
2456 /* Bring the PHY back. Again, lock is useless at this point as
2457 * nothing can be happening until we restart the whole thing
2461 /* If we were opened, bring everything back */
2466 /* Re-attach net device */
2467 netif_device_attach(dev);
2471 spin_lock_irqsave(&gp->lock, flags);
2472 spin_lock(&gp->tx_lock);
2474 /* If we had WOL enabled, the cell clock was never turned off during
2475 * sleep, so we end up beeing unbalanced. Fix that here
2480 /* This function doesn't need to hold the cell, it will be held if the
2481 * driver is open by gem_do_start().
2485 spin_unlock(&gp->tx_lock);
2486 spin_unlock_irqrestore(&gp->lock, flags);
2488 netif_poll_enable(dev);
2490 mutex_unlock(&gp->pm_mutex);
2494 #endif /* CONFIG_PM */
2496 static struct net_device_stats *gem_get_stats(struct net_device *dev)
2498 struct gem *gp = dev->priv;
2499 struct net_device_stats *stats = &gp->net_stats;
2501 spin_lock_irq(&gp->lock);
2502 spin_lock(&gp->tx_lock);
2504 /* I have seen this being called while the PM was in progress,
2505 * so we shield against this
2508 stats->rx_crc_errors += readl(gp->regs + MAC_FCSERR);
2509 writel(0, gp->regs + MAC_FCSERR);
2511 stats->rx_frame_errors += readl(gp->regs + MAC_AERR);
2512 writel(0, gp->regs + MAC_AERR);
2514 stats->rx_length_errors += readl(gp->regs + MAC_LERR);
2515 writel(0, gp->regs + MAC_LERR);
2517 stats->tx_aborted_errors += readl(gp->regs + MAC_ECOLL);
2518 stats->collisions +=
2519 (readl(gp->regs + MAC_ECOLL) +
2520 readl(gp->regs + MAC_LCOLL));
2521 writel(0, gp->regs + MAC_ECOLL);
2522 writel(0, gp->regs + MAC_LCOLL);
2525 spin_unlock(&gp->tx_lock);
2526 spin_unlock_irq(&gp->lock);
2528 return &gp->net_stats;
2531 static void gem_set_multicast(struct net_device *dev)
2533 struct gem *gp = dev->priv;
2534 u32 rxcfg, rxcfg_new;
2538 spin_lock_irq(&gp->lock);
2539 spin_lock(&gp->tx_lock);
2544 netif_stop_queue(dev);
2546 rxcfg = readl(gp->regs + MAC_RXCFG);
2547 rxcfg_new = gem_setup_multicast(gp);
2549 rxcfg_new |= MAC_RXCFG_SFCS;
2551 gp->mac_rx_cfg = rxcfg_new;
2553 writel(rxcfg & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
2554 while (readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB) {
2560 rxcfg &= ~(MAC_RXCFG_PROM | MAC_RXCFG_HFE);
2563 writel(rxcfg, gp->regs + MAC_RXCFG);
2565 netif_wake_queue(dev);
2568 spin_unlock(&gp->tx_lock);
2569 spin_unlock_irq(&gp->lock);
2572 /* Jumbo-grams don't seem to work :-( */
2573 #define GEM_MIN_MTU 68
2575 #define GEM_MAX_MTU 1500
2577 #define GEM_MAX_MTU 9000
2580 static int gem_change_mtu(struct net_device *dev, int new_mtu)
2582 struct gem *gp = dev->priv;
2584 if (new_mtu < GEM_MIN_MTU || new_mtu > GEM_MAX_MTU)
2587 if (!netif_running(dev) || !netif_device_present(dev)) {
2588 /* We'll just catch it later when the
2589 * device is up'd or resumed.
2595 mutex_lock(&gp->pm_mutex);
2596 spin_lock_irq(&gp->lock);
2597 spin_lock(&gp->tx_lock);
2600 gem_reinit_chip(gp);
2601 if (gp->lstate == link_up)
2602 gem_set_link_modes(gp);
2604 spin_unlock(&gp->tx_lock);
2605 spin_unlock_irq(&gp->lock);
2606 mutex_unlock(&gp->pm_mutex);
2611 static void gem_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2613 struct gem *gp = dev->priv;
2615 strcpy(info->driver, DRV_NAME);
2616 strcpy(info->version, DRV_VERSION);
2617 strcpy(info->bus_info, pci_name(gp->pdev));
2620 static int gem_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2622 struct gem *gp = dev->priv;
2624 if (gp->phy_type == phy_mii_mdio0 ||
2625 gp->phy_type == phy_mii_mdio1) {
2626 if (gp->phy_mii.def)
2627 cmd->supported = gp->phy_mii.def->features;
2629 cmd->supported = (SUPPORTED_10baseT_Half |
2630 SUPPORTED_10baseT_Full);
2632 /* XXX hardcoded stuff for now */
2633 cmd->port = PORT_MII;
2634 cmd->transceiver = XCVR_EXTERNAL;
2635 cmd->phy_address = 0; /* XXX fixed PHYAD */
2637 /* Return current PHY settings */
2638 spin_lock_irq(&gp->lock);
2639 cmd->autoneg = gp->want_autoneg;
2640 cmd->speed = gp->phy_mii.speed;
2641 cmd->duplex = gp->phy_mii.duplex;
2642 cmd->advertising = gp->phy_mii.advertising;
2644 /* If we started with a forced mode, we don't have a default
2645 * advertise set, we need to return something sensible so
2646 * userland can re-enable autoneg properly.
2648 if (cmd->advertising == 0)
2649 cmd->advertising = cmd->supported;
2650 spin_unlock_irq(&gp->lock);
2651 } else { // XXX PCS ?
2653 (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
2654 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
2656 cmd->advertising = cmd->supported;
2658 cmd->duplex = cmd->port = cmd->phy_address =
2659 cmd->transceiver = cmd->autoneg = 0;
2661 cmd->maxtxpkt = cmd->maxrxpkt = 0;
2666 static int gem_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2668 struct gem *gp = dev->priv;
2670 /* Verify the settings we care about. */
2671 if (cmd->autoneg != AUTONEG_ENABLE &&
2672 cmd->autoneg != AUTONEG_DISABLE)
2675 if (cmd->autoneg == AUTONEG_ENABLE &&
2676 cmd->advertising == 0)
2679 if (cmd->autoneg == AUTONEG_DISABLE &&
2680 ((cmd->speed != SPEED_1000 &&
2681 cmd->speed != SPEED_100 &&
2682 cmd->speed != SPEED_10) ||
2683 (cmd->duplex != DUPLEX_HALF &&
2684 cmd->duplex != DUPLEX_FULL)))
2687 /* Apply settings and restart link process. */
2688 spin_lock_irq(&gp->lock);
2690 gem_begin_auto_negotiation(gp, cmd);
2692 spin_unlock_irq(&gp->lock);
2697 static int gem_nway_reset(struct net_device *dev)
2699 struct gem *gp = dev->priv;
2701 if (!gp->want_autoneg)
2704 /* Restart link process. */
2705 spin_lock_irq(&gp->lock);
2707 gem_begin_auto_negotiation(gp, NULL);
2709 spin_unlock_irq(&gp->lock);
2714 static u32 gem_get_msglevel(struct net_device *dev)
2716 struct gem *gp = dev->priv;
2717 return gp->msg_enable;
2720 static void gem_set_msglevel(struct net_device *dev, u32 value)
2722 struct gem *gp = dev->priv;
2723 gp->msg_enable = value;
2727 /* Add more when I understand how to program the chip */
2728 /* like WAKE_UCAST | WAKE_MCAST | WAKE_BCAST */
2730 #define WOL_SUPPORTED_MASK (WAKE_MAGIC)
2732 static void gem_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2734 struct gem *gp = dev->priv;
2736 /* Add more when I understand how to program the chip */
2738 wol->supported = WOL_SUPPORTED_MASK;
2739 wol->wolopts = gp->wake_on_lan;
2746 static int gem_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2748 struct gem *gp = dev->priv;
2752 gp->wake_on_lan = wol->wolopts & WOL_SUPPORTED_MASK;
2756 static struct ethtool_ops gem_ethtool_ops = {
2757 .get_drvinfo = gem_get_drvinfo,
2758 .get_link = ethtool_op_get_link,
2759 .get_settings = gem_get_settings,
2760 .set_settings = gem_set_settings,
2761 .nway_reset = gem_nway_reset,
2762 .get_msglevel = gem_get_msglevel,
2763 .set_msglevel = gem_set_msglevel,
2764 .get_wol = gem_get_wol,
2765 .set_wol = gem_set_wol,
2768 static int gem_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2770 struct gem *gp = dev->priv;
2771 struct mii_ioctl_data *data = if_mii(ifr);
2772 int rc = -EOPNOTSUPP;
2773 unsigned long flags;
2775 /* Hold the PM mutex while doing ioctl's or we may collide
2776 * with power management.
2778 mutex_lock(&gp->pm_mutex);
2780 spin_lock_irqsave(&gp->lock, flags);
2782 spin_unlock_irqrestore(&gp->lock, flags);
2785 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2786 data->phy_id = gp->mii_phy_addr;
2787 /* Fallthrough... */
2789 case SIOCGMIIREG: /* Read MII PHY register. */
2793 data->val_out = __phy_read(gp, data->phy_id & 0x1f,
2794 data->reg_num & 0x1f);
2799 case SIOCSMIIREG: /* Write MII PHY register. */
2800 if (!capable(CAP_NET_ADMIN))
2802 else if (!gp->running)
2805 __phy_write(gp, data->phy_id & 0x1f, data->reg_num & 0x1f,
2812 spin_lock_irqsave(&gp->lock, flags);
2814 spin_unlock_irqrestore(&gp->lock, flags);
2816 mutex_unlock(&gp->pm_mutex);
2821 #if (!defined(__sparc__) && !defined(CONFIG_PPC_PMAC))
2822 /* Fetch MAC address from vital product data of PCI ROM. */
2823 static int find_eth_addr_in_vpd(void __iomem *rom_base, int len, unsigned char *dev_addr)
2827 for (this_offset = 0x20; this_offset < len; this_offset++) {
2828 void __iomem *p = rom_base + this_offset;
2831 if (readb(p + 0) != 0x90 ||
2832 readb(p + 1) != 0x00 ||
2833 readb(p + 2) != 0x09 ||
2834 readb(p + 3) != 0x4e ||
2835 readb(p + 4) != 0x41 ||
2836 readb(p + 5) != 0x06)
2842 for (i = 0; i < 6; i++)
2843 dev_addr[i] = readb(p + i);
2849 static void get_gem_mac_nonobp(struct pci_dev *pdev, unsigned char *dev_addr)
2852 void __iomem *p = pci_map_rom(pdev, &size);
2857 found = readb(p) == 0x55 &&
2858 readb(p + 1) == 0xaa &&
2859 find_eth_addr_in_vpd(p, (64 * 1024), dev_addr);
2860 pci_unmap_rom(pdev, p);
2865 /* Sun MAC prefix then 3 random bytes. */
2869 get_random_bytes(dev_addr + 3, 3);
2872 #endif /* not Sparc and not PPC */
2874 static int __devinit gem_get_device_address(struct gem *gp)
2876 #if defined(__sparc__) || defined(CONFIG_PPC_PMAC)
2877 struct net_device *dev = gp->dev;
2880 #if defined(__sparc__)
2881 struct pci_dev *pdev = gp->pdev;
2882 struct pcidev_cookie *pcp = pdev->sysdata;
2886 unsigned char *addr;
2889 addr = of_get_property(pcp->prom_node, "local-mac-address",
2891 if (addr && len == 6) {
2893 memcpy(dev->dev_addr, addr, 6);
2897 memcpy(dev->dev_addr, idprom->id_ethaddr, 6);
2898 #elif defined(CONFIG_PPC_PMAC)
2899 unsigned char *addr;
2901 addr = get_property(gp->of_node, "local-mac-address", NULL);
2904 printk(KERN_ERR "%s: can't get mac-address\n", dev->name);
2907 memcpy(dev->dev_addr, addr, 6);
2909 get_gem_mac_nonobp(gp->pdev, gp->dev->dev_addr);
2914 static void gem_remove_one(struct pci_dev *pdev)
2916 struct net_device *dev = pci_get_drvdata(pdev);
2919 struct gem *gp = dev->priv;
2921 unregister_netdev(dev);
2923 /* Stop the link timer */
2924 del_timer_sync(&gp->link_timer);
2926 /* We shouldn't need any locking here */
2929 /* Wait for a pending reset task to complete */
2930 while (gp->reset_task_pending)
2932 flush_scheduled_work();
2934 /* Shut the PHY down */
2935 gem_stop_phy(gp, 0);
2939 /* Make sure bus master is disabled */
2940 pci_disable_device(gp->pdev);
2942 /* Free resources */
2943 pci_free_consistent(pdev,
2944 sizeof(struct gem_init_block),
2948 pci_release_regions(pdev);
2951 pci_set_drvdata(pdev, NULL);
2955 static int __devinit gem_init_one(struct pci_dev *pdev,
2956 const struct pci_device_id *ent)
2958 static int gem_version_printed = 0;
2959 unsigned long gemreg_base, gemreg_len;
2960 struct net_device *dev;
2962 int i, err, pci_using_dac;
2964 if (gem_version_printed++ == 0)
2965 printk(KERN_INFO "%s", version);
2967 /* Apple gmac note: during probe, the chip is powered up by
2968 * the arch code to allow the code below to work (and to let
2969 * the chip be probed on the config space. It won't stay powered
2970 * up until the interface is brought up however, so we can't rely
2971 * on register configuration done at this point.
2973 err = pci_enable_device(pdev);
2975 printk(KERN_ERR PFX "Cannot enable MMIO operation, "
2979 pci_set_master(pdev);
2981 /* Configure DMA attributes. */
2983 /* All of the GEM documentation states that 64-bit DMA addressing
2984 * is fully supported and should work just fine. However the
2985 * front end for RIO based GEMs is different and only supports
2986 * 32-bit addressing.
2988 * For now we assume the various PPC GEMs are 32-bit only as well.
2990 if (pdev->vendor == PCI_VENDOR_ID_SUN &&
2991 pdev->device == PCI_DEVICE_ID_SUN_GEM &&
2992 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
2995 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2997 printk(KERN_ERR PFX "No usable DMA configuration, "
2999 goto err_disable_device;
3004 gemreg_base = pci_resource_start(pdev, 0);
3005 gemreg_len = pci_resource_len(pdev, 0);
3007 if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) {
3008 printk(KERN_ERR PFX "Cannot find proper PCI device "
3009 "base address, aborting.\n");
3011 goto err_disable_device;
3014 dev = alloc_etherdev(sizeof(*gp));
3016 printk(KERN_ERR PFX "Etherdev alloc failed, aborting.\n");
3018 goto err_disable_device;
3020 SET_MODULE_OWNER(dev);
3021 SET_NETDEV_DEV(dev, &pdev->dev);
3025 err = pci_request_regions(pdev, DRV_NAME);
3027 printk(KERN_ERR PFX "Cannot obtain PCI resources, "
3029 goto err_out_free_netdev;
3033 dev->base_addr = (long) pdev;
3036 gp->msg_enable = DEFAULT_MSG;
3038 spin_lock_init(&gp->lock);
3039 spin_lock_init(&gp->tx_lock);
3040 mutex_init(&gp->pm_mutex);
3042 init_timer(&gp->link_timer);
3043 gp->link_timer.function = gem_link_timer;
3044 gp->link_timer.data = (unsigned long) gp;
3046 INIT_WORK(&gp->reset_task, gem_reset_task, gp);
3048 gp->lstate = link_down;
3049 gp->timer_ticks = 0;
3050 netif_carrier_off(dev);
3052 gp->regs = ioremap(gemreg_base, gemreg_len);
3053 if (gp->regs == 0UL) {
3054 printk(KERN_ERR PFX "Cannot map device registers, "
3057 goto err_out_free_res;
3060 /* On Apple, we want a reference to the Open Firmware device-tree
3061 * node. We use it for clock control.
3063 #ifdef CONFIG_PPC_PMAC
3064 gp->of_node = pci_device_to_OF_node(pdev);
3067 /* Only Apple version supports WOL afaik */
3068 if (pdev->vendor == PCI_VENDOR_ID_APPLE)
3071 /* Make sure cell is enabled */
3074 /* Make sure everything is stopped and in init state */
3077 /* Fill up the mii_phy structure (even if we won't use it) */
3078 gp->phy_mii.dev = dev;
3079 gp->phy_mii.mdio_read = _phy_read;
3080 gp->phy_mii.mdio_write = _phy_write;
3081 #ifdef CONFIG_PPC_PMAC
3082 gp->phy_mii.platform_data = gp->of_node;
3084 /* By default, we start with autoneg */
3085 gp->want_autoneg = 1;
3087 /* Check fifo sizes, PHY type, etc... */
3088 if (gem_check_invariants(gp)) {
3090 goto err_out_iounmap;
3093 /* It is guaranteed that the returned buffer will be at least
3094 * PAGE_SIZE aligned.
3096 gp->init_block = (struct gem_init_block *)
3097 pci_alloc_consistent(pdev, sizeof(struct gem_init_block),
3099 if (!gp->init_block) {
3100 printk(KERN_ERR PFX "Cannot allocate init block, "
3103 goto err_out_iounmap;
3106 if (gem_get_device_address(gp))
3107 goto err_out_free_consistent;
3109 dev->open = gem_open;
3110 dev->stop = gem_close;
3111 dev->hard_start_xmit = gem_start_xmit;
3112 dev->get_stats = gem_get_stats;
3113 dev->set_multicast_list = gem_set_multicast;
3114 dev->do_ioctl = gem_ioctl;
3115 dev->poll = gem_poll;
3117 dev->ethtool_ops = &gem_ethtool_ops;
3118 dev->tx_timeout = gem_tx_timeout;
3119 dev->watchdog_timeo = 5 * HZ;
3120 dev->change_mtu = gem_change_mtu;
3121 dev->irq = pdev->irq;
3123 #ifdef CONFIG_NET_POLL_CONTROLLER
3124 dev->poll_controller = gem_poll_controller;
3127 /* Set that now, in case PM kicks in now */
3128 pci_set_drvdata(pdev, dev);
3130 /* Detect & init PHY, start autoneg, we release the cell now
3131 * too, it will be managed by whoever needs it
3135 spin_lock_irq(&gp->lock);
3137 spin_unlock_irq(&gp->lock);
3139 /* Register with kernel */
3140 if (register_netdev(dev)) {
3141 printk(KERN_ERR PFX "Cannot register net device, "
3144 goto err_out_free_consistent;
3147 printk(KERN_INFO "%s: Sun GEM (PCI) 10/100/1000BaseT Ethernet ",
3149 for (i = 0; i < 6; i++)
3150 printk("%2.2x%c", dev->dev_addr[i],
3151 i == 5 ? ' ' : ':');
3154 if (gp->phy_type == phy_mii_mdio0 ||
3155 gp->phy_type == phy_mii_mdio1)
3156 printk(KERN_INFO "%s: Found %s PHY\n", dev->name,
3157 gp->phy_mii.def ? gp->phy_mii.def->name : "no");
3159 /* GEM can do it all... */
3160 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_LLTX;
3162 dev->features |= NETIF_F_HIGHDMA;
3166 err_out_free_consistent:
3167 gem_remove_one(pdev);
3173 pci_release_regions(pdev);
3175 err_out_free_netdev:
3178 pci_disable_device(pdev);
3184 static struct pci_driver gem_driver = {
3185 .name = GEM_MODULE_NAME,
3186 .id_table = gem_pci_tbl,
3187 .probe = gem_init_one,
3188 .remove = gem_remove_one,
3190 .suspend = gem_suspend,
3191 .resume = gem_resume,
3192 #endif /* CONFIG_PM */
3195 static int __init gem_init(void)
3197 return pci_module_init(&gem_driver);
3200 static void __exit gem_cleanup(void)
3202 pci_unregister_driver(&gem_driver);
3205 module_init(gem_init);
3206 module_exit(gem_cleanup);