1 /* b44.c: Broadcom 4400 device driver.
3 * Copyright (C) 2002 David S. Miller (davem@redhat.com)
4 * Fixed by Pekka Pietikainen (pp@ee.oulu.fi)
6 * Distribute under GPL.
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/moduleparam.h>
12 #include <linux/types.h>
13 #include <linux/netdevice.h>
14 #include <linux/ethtool.h>
15 #include <linux/mii.h>
16 #include <linux/if_ether.h>
17 #include <linux/etherdevice.h>
18 #include <linux/pci.h>
19 #include <linux/delay.h>
20 #include <linux/init.h>
21 #include <linux/version.h>
23 #include <asm/uaccess.h>
29 #define DRV_MODULE_NAME "b44"
30 #define PFX DRV_MODULE_NAME ": "
31 #define DRV_MODULE_VERSION "0.95"
32 #define DRV_MODULE_RELDATE "Aug 3, 2004"
34 #define B44_DEF_MSG_ENABLE \
44 /* length of time before we decide the hardware is borked,
45 * and dev->tx_timeout() should be called to fix the problem
47 #define B44_TX_TIMEOUT (5 * HZ)
49 /* hardware minimum and maximum for a single frame's data payload */
50 #define B44_MIN_MTU 60
51 #define B44_MAX_MTU 1500
53 #define B44_RX_RING_SIZE 512
54 #define B44_DEF_RX_RING_PENDING 200
55 #define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \
57 #define B44_TX_RING_SIZE 512
58 #define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1)
59 #define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \
61 #define B44_DMA_MASK 0x3fffffff
63 #define TX_RING_GAP(BP) \
64 (B44_TX_RING_SIZE - (BP)->tx_pending)
65 #define TX_BUFFS_AVAIL(BP) \
66 (((BP)->tx_cons <= (BP)->tx_prod) ? \
67 (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \
68 (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP))
69 #define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1))
71 #define RX_PKT_BUF_SZ (1536 + bp->rx_offset + 64)
72 #define TX_PKT_BUF_SZ (B44_MAX_MTU + ETH_HLEN + 8)
74 /* minimum number of free TX descriptors required to wake up TX process */
75 #define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4)
77 static char version[] __devinitdata =
78 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
80 MODULE_AUTHOR("Florian Schirmer, Pekka Pietikainen, David S. Miller");
81 MODULE_DESCRIPTION("Broadcom 4400 10/100 PCI ethernet driver");
82 MODULE_LICENSE("GPL");
83 MODULE_VERSION(DRV_MODULE_VERSION);
85 static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */
86 module_param(b44_debug, int, 0);
87 MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value");
89 static struct pci_device_id b44_pci_tbl[] = {
90 { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401,
91 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
92 { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0,
93 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
94 { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1,
95 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
96 { } /* terminate list with empty entry */
99 MODULE_DEVICE_TABLE(pci, b44_pci_tbl);
101 static void b44_halt(struct b44 *);
102 static void b44_init_rings(struct b44 *);
103 static void b44_init_hw(struct b44 *);
104 static int b44_poll(struct net_device *dev, int *budget);
105 #ifdef CONFIG_NET_POLL_CONTROLLER
106 static void b44_poll_controller(struct net_device *dev);
109 static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
111 return readl(bp->regs + reg);
114 static inline void bw32(const struct b44 *bp,
115 unsigned long reg, unsigned long val)
117 writel(val, bp->regs + reg);
120 static int b44_wait_bit(struct b44 *bp, unsigned long reg,
121 u32 bit, unsigned long timeout, const int clear)
125 for (i = 0; i < timeout; i++) {
126 u32 val = br32(bp, reg);
128 if (clear && !(val & bit))
130 if (!clear && (val & bit))
135 printk(KERN_ERR PFX "%s: BUG! Timeout waiting for bit %08x of register "
139 (clear ? "clear" : "set"));
145 /* Sonics SiliconBackplane support routines. ROFL, you should see all the
146 * buzz words used on this company's website :-)
148 * All of these routines must be invoked with bp->lock held and
149 * interrupts disabled.
152 #define SB_PCI_DMA 0x40000000 /* Client Mode PCI memory access space (1 GB) */
153 #define BCM4400_PCI_CORE_ADDR 0x18002000 /* Address of PCI core on BCM4400 cards */
155 static u32 ssb_get_core_rev(struct b44 *bp)
157 return (br32(bp, B44_SBIDHIGH) & SBIDHIGH_RC_MASK);
160 static u32 ssb_pci_setup(struct b44 *bp, u32 cores)
162 u32 bar_orig, pci_rev, val;
164 pci_read_config_dword(bp->pdev, SSB_BAR0_WIN, &bar_orig);
165 pci_write_config_dword(bp->pdev, SSB_BAR0_WIN, BCM4400_PCI_CORE_ADDR);
166 pci_rev = ssb_get_core_rev(bp);
168 val = br32(bp, B44_SBINTVEC);
170 bw32(bp, B44_SBINTVEC, val);
172 val = br32(bp, SSB_PCI_TRANS_2);
173 val |= SSB_PCI_PREF | SSB_PCI_BURST;
174 bw32(bp, SSB_PCI_TRANS_2, val);
176 pci_write_config_dword(bp->pdev, SSB_BAR0_WIN, bar_orig);
181 static void ssb_core_disable(struct b44 *bp)
183 if (br32(bp, B44_SBTMSLOW) & SBTMSLOW_RESET)
186 bw32(bp, B44_SBTMSLOW, (SBTMSLOW_REJECT | SBTMSLOW_CLOCK));
187 b44_wait_bit(bp, B44_SBTMSLOW, SBTMSLOW_REJECT, 100000, 0);
188 b44_wait_bit(bp, B44_SBTMSHIGH, SBTMSHIGH_BUSY, 100000, 1);
189 bw32(bp, B44_SBTMSLOW, (SBTMSLOW_FGC | SBTMSLOW_CLOCK |
190 SBTMSLOW_REJECT | SBTMSLOW_RESET));
191 br32(bp, B44_SBTMSLOW);
193 bw32(bp, B44_SBTMSLOW, (SBTMSLOW_REJECT | SBTMSLOW_RESET));
194 br32(bp, B44_SBTMSLOW);
198 static void ssb_core_reset(struct b44 *bp)
202 ssb_core_disable(bp);
203 bw32(bp, B44_SBTMSLOW, (SBTMSLOW_RESET | SBTMSLOW_CLOCK | SBTMSLOW_FGC));
204 br32(bp, B44_SBTMSLOW);
207 /* Clear SERR if set, this is a hw bug workaround. */
208 if (br32(bp, B44_SBTMSHIGH) & SBTMSHIGH_SERR)
209 bw32(bp, B44_SBTMSHIGH, 0);
211 val = br32(bp, B44_SBIMSTATE);
212 if (val & (SBIMSTATE_IBE | SBIMSTATE_TO))
213 bw32(bp, B44_SBIMSTATE, val & ~(SBIMSTATE_IBE | SBIMSTATE_TO));
215 bw32(bp, B44_SBTMSLOW, (SBTMSLOW_CLOCK | SBTMSLOW_FGC));
216 br32(bp, B44_SBTMSLOW);
219 bw32(bp, B44_SBTMSLOW, (SBTMSLOW_CLOCK));
220 br32(bp, B44_SBTMSLOW);
224 static int ssb_core_unit(struct b44 *bp)
227 u32 val = br32(bp, B44_SBADMATCH0);
230 type = val & SBADMATCH0_TYPE_MASK;
233 base = val & SBADMATCH0_BS0_MASK;
237 base = val & SBADMATCH0_BS1_MASK;
242 base = val & SBADMATCH0_BS2_MASK;
249 static int ssb_is_core_up(struct b44 *bp)
251 return ((br32(bp, B44_SBTMSLOW) & (SBTMSLOW_RESET | SBTMSLOW_REJECT | SBTMSLOW_CLOCK))
255 static void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
259 val = ((u32) data[2]) << 24;
260 val |= ((u32) data[3]) << 16;
261 val |= ((u32) data[4]) << 8;
262 val |= ((u32) data[5]) << 0;
263 bw32(bp, B44_CAM_DATA_LO, val);
264 val = (CAM_DATA_HI_VALID |
265 (((u32) data[0]) << 8) |
266 (((u32) data[1]) << 0));
267 bw32(bp, B44_CAM_DATA_HI, val);
268 bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE |
269 (index << CAM_CTRL_INDEX_SHIFT)));
270 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
273 static inline void __b44_disable_ints(struct b44 *bp)
275 bw32(bp, B44_IMASK, 0);
278 static void b44_disable_ints(struct b44 *bp)
280 __b44_disable_ints(bp);
282 /* Flush posted writes. */
286 static void b44_enable_ints(struct b44 *bp)
288 bw32(bp, B44_IMASK, bp->imask);
291 static int b44_readphy(struct b44 *bp, int reg, u32 *val)
295 bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
296 bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
297 (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
298 (bp->phy_addr << MDIO_DATA_PMD_SHIFT) |
299 (reg << MDIO_DATA_RA_SHIFT) |
300 (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT)));
301 err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
302 *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA;
307 static int b44_writephy(struct b44 *bp, int reg, u32 val)
309 bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
310 bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
311 (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
312 (bp->phy_addr << MDIO_DATA_PMD_SHIFT) |
313 (reg << MDIO_DATA_RA_SHIFT) |
314 (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) |
315 (val & MDIO_DATA_DATA)));
316 return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
319 /* miilib interface */
320 /* FIXME FIXME: phy_id is ignored, bp->phy_addr use is unconditional
321 * due to code existing before miilib use was added to this driver.
322 * Someone should remove this artificial driver limitation in
323 * b44_{read,write}phy. bp->phy_addr itself is fine (and needed).
325 static int b44_mii_read(struct net_device *dev, int phy_id, int location)
328 struct b44 *bp = netdev_priv(dev);
329 int rc = b44_readphy(bp, location, &val);
335 static void b44_mii_write(struct net_device *dev, int phy_id, int location,
338 struct b44 *bp = netdev_priv(dev);
339 b44_writephy(bp, location, val);
342 static int b44_phy_reset(struct b44 *bp)
347 err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
351 err = b44_readphy(bp, MII_BMCR, &val);
353 if (val & BMCR_RESET) {
354 printk(KERN_ERR PFX "%s: PHY Reset would not complete.\n",
363 static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
367 bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE);
368 bp->flags |= pause_flags;
370 val = br32(bp, B44_RXCONFIG);
371 if (pause_flags & B44_FLAG_RX_PAUSE)
372 val |= RXCONFIG_FLOW;
374 val &= ~RXCONFIG_FLOW;
375 bw32(bp, B44_RXCONFIG, val);
377 val = br32(bp, B44_MAC_FLOW);
378 if (pause_flags & B44_FLAG_TX_PAUSE)
379 val |= (MAC_FLOW_PAUSE_ENAB |
380 (0xc0 & MAC_FLOW_RX_HI_WATER));
382 val &= ~MAC_FLOW_PAUSE_ENAB;
383 bw32(bp, B44_MAC_FLOW, val);
386 static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
388 u32 pause_enab = bp->flags & (B44_FLAG_TX_PAUSE |
391 if (local & ADVERTISE_PAUSE_CAP) {
392 if (local & ADVERTISE_PAUSE_ASYM) {
393 if (remote & LPA_PAUSE_CAP)
394 pause_enab |= (B44_FLAG_TX_PAUSE |
396 else if (remote & LPA_PAUSE_ASYM)
397 pause_enab |= B44_FLAG_RX_PAUSE;
399 if (remote & LPA_PAUSE_CAP)
400 pause_enab |= (B44_FLAG_TX_PAUSE |
403 } else if (local & ADVERTISE_PAUSE_ASYM) {
404 if ((remote & LPA_PAUSE_CAP) &&
405 (remote & LPA_PAUSE_ASYM))
406 pause_enab |= B44_FLAG_TX_PAUSE;
409 __b44_set_flow_ctrl(bp, pause_enab);
412 static int b44_setup_phy(struct b44 *bp)
417 if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
419 if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
420 val & MII_ALEDCTRL_ALLMSK)) != 0)
422 if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0)
424 if ((err = b44_writephy(bp, B44_MII_TLEDCTRL,
425 val | MII_TLEDCTRL_ENABLE)) != 0)
428 if (!(bp->flags & B44_FLAG_FORCE_LINK)) {
429 u32 adv = ADVERTISE_CSMA;
431 if (bp->flags & B44_FLAG_ADV_10HALF)
432 adv |= ADVERTISE_10HALF;
433 if (bp->flags & B44_FLAG_ADV_10FULL)
434 adv |= ADVERTISE_10FULL;
435 if (bp->flags & B44_FLAG_ADV_100HALF)
436 adv |= ADVERTISE_100HALF;
437 if (bp->flags & B44_FLAG_ADV_100FULL)
438 adv |= ADVERTISE_100FULL;
440 if (bp->flags & B44_FLAG_PAUSE_AUTO)
441 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
443 if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0)
445 if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE |
446 BMCR_ANRESTART))) != 0)
451 if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0)
453 bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100);
454 if (bp->flags & B44_FLAG_100_BASE_T)
455 bmcr |= BMCR_SPEED100;
456 if (bp->flags & B44_FLAG_FULL_DUPLEX)
457 bmcr |= BMCR_FULLDPLX;
458 if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0)
461 /* Since we will not be negotiating there is no safe way
462 * to determine if the link partner supports flow control
463 * or not. So just disable it completely in this case.
465 b44_set_flow_ctrl(bp, 0, 0);
472 static void b44_stats_update(struct b44 *bp)
477 val = &bp->hw_stats.tx_good_octets;
478 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) {
479 *val++ += br32(bp, reg);
481 val = &bp->hw_stats.rx_good_octets;
482 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) {
483 *val++ += br32(bp, reg);
487 static void b44_link_report(struct b44 *bp)
489 if (!netif_carrier_ok(bp->dev)) {
490 printk(KERN_INFO PFX "%s: Link is down.\n", bp->dev->name);
492 printk(KERN_INFO PFX "%s: Link is up at %d Mbps, %s duplex.\n",
494 (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10,
495 (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half");
497 printk(KERN_INFO PFX "%s: Flow control is %s for TX and "
500 (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off",
501 (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off");
505 static void b44_check_phy(struct b44 *bp)
509 if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
510 !b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
512 if (aux & MII_AUXCTRL_SPEED)
513 bp->flags |= B44_FLAG_100_BASE_T;
515 bp->flags &= ~B44_FLAG_100_BASE_T;
516 if (aux & MII_AUXCTRL_DUPLEX)
517 bp->flags |= B44_FLAG_FULL_DUPLEX;
519 bp->flags &= ~B44_FLAG_FULL_DUPLEX;
521 if (!netif_carrier_ok(bp->dev) &&
522 (bmsr & BMSR_LSTATUS)) {
523 u32 val = br32(bp, B44_TX_CTRL);
524 u32 local_adv, remote_adv;
526 if (bp->flags & B44_FLAG_FULL_DUPLEX)
527 val |= TX_CTRL_DUPLEX;
529 val &= ~TX_CTRL_DUPLEX;
530 bw32(bp, B44_TX_CTRL, val);
532 if (!(bp->flags & B44_FLAG_FORCE_LINK) &&
533 !b44_readphy(bp, MII_ADVERTISE, &local_adv) &&
534 !b44_readphy(bp, MII_LPA, &remote_adv))
535 b44_set_flow_ctrl(bp, local_adv, remote_adv);
538 netif_carrier_on(bp->dev);
540 } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) {
542 netif_carrier_off(bp->dev);
546 if (bmsr & BMSR_RFAULT)
547 printk(KERN_WARNING PFX "%s: Remote fault detected in PHY\n",
550 printk(KERN_WARNING PFX "%s: Jabber detected in PHY\n",
555 static void b44_timer(unsigned long __opaque)
557 struct b44 *bp = (struct b44 *) __opaque;
559 spin_lock_irq(&bp->lock);
563 b44_stats_update(bp);
565 spin_unlock_irq(&bp->lock);
567 bp->timer.expires = jiffies + HZ;
568 add_timer(&bp->timer);
571 static void b44_tx(struct b44 *bp)
575 cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
576 cur /= sizeof(struct dma_desc);
578 /* XXX needs updating when NETIF_F_SG is supported */
579 for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) {
580 struct ring_info *rp = &bp->tx_buffers[cons];
581 struct sk_buff *skb = rp->skb;
583 if (unlikely(skb == NULL))
586 pci_unmap_single(bp->pdev,
587 pci_unmap_addr(rp, mapping),
591 dev_kfree_skb_irq(skb);
595 if (netif_queue_stopped(bp->dev) &&
596 TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
597 netif_wake_queue(bp->dev);
599 bw32(bp, B44_GPTIMER, 0);
602 /* Works like this. This chip writes a 'struct rx_header" 30 bytes
603 * before the DMA address you give it. So we allocate 30 more bytes
604 * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then
605 * point the chip at 30 bytes past where the rx_header will go.
607 static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
610 struct ring_info *src_map, *map;
611 struct rx_header *rh;
619 src_map = &bp->rx_buffers[src_idx];
620 dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
621 map = &bp->rx_buffers[dest_idx];
622 skb = dev_alloc_skb(RX_PKT_BUF_SZ);
626 mapping = pci_map_single(bp->pdev, skb->data,
630 /* Hardware bug work-around, the chip is unable to do PCI DMA
631 to/from anything above 1GB :-( */
632 if(mapping+RX_PKT_BUF_SZ > B44_DMA_MASK) {
634 pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE);
635 dev_kfree_skb_any(skb);
636 skb = __dev_alloc_skb(RX_PKT_BUF_SZ,GFP_DMA);
639 mapping = pci_map_single(bp->pdev, skb->data,
642 if(mapping+RX_PKT_BUF_SZ > B44_DMA_MASK) {
643 pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE);
644 dev_kfree_skb_any(skb);
650 skb_reserve(skb, bp->rx_offset);
652 rh = (struct rx_header *)
653 (skb->data - bp->rx_offset);
658 pci_unmap_addr_set(map, mapping, mapping);
663 ctrl = (DESC_CTRL_LEN & (RX_PKT_BUF_SZ - bp->rx_offset));
664 if (dest_idx == (B44_RX_RING_SIZE - 1))
665 ctrl |= DESC_CTRL_EOT;
667 dp = &bp->rx_ring[dest_idx];
668 dp->ctrl = cpu_to_le32(ctrl);
669 dp->addr = cpu_to_le32((u32) mapping + bp->rx_offset + bp->dma_offset);
671 return RX_PKT_BUF_SZ;
674 static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
676 struct dma_desc *src_desc, *dest_desc;
677 struct ring_info *src_map, *dest_map;
678 struct rx_header *rh;
682 dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
683 dest_desc = &bp->rx_ring[dest_idx];
684 dest_map = &bp->rx_buffers[dest_idx];
685 src_desc = &bp->rx_ring[src_idx];
686 src_map = &bp->rx_buffers[src_idx];
688 dest_map->skb = src_map->skb;
689 rh = (struct rx_header *) src_map->skb->data;
692 pci_unmap_addr_set(dest_map, mapping,
693 pci_unmap_addr(src_map, mapping));
695 ctrl = src_desc->ctrl;
696 if (dest_idx == (B44_RX_RING_SIZE - 1))
697 ctrl |= cpu_to_le32(DESC_CTRL_EOT);
699 ctrl &= cpu_to_le32(~DESC_CTRL_EOT);
701 dest_desc->ctrl = ctrl;
702 dest_desc->addr = src_desc->addr;
705 pci_dma_sync_single_for_device(bp->pdev, src_desc->addr,
710 static int b44_rx(struct b44 *bp, int budget)
716 prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK;
717 prod /= sizeof(struct dma_desc);
720 while (cons != prod && budget > 0) {
721 struct ring_info *rp = &bp->rx_buffers[cons];
722 struct sk_buff *skb = rp->skb;
723 dma_addr_t map = pci_unmap_addr(rp, mapping);
724 struct rx_header *rh;
727 pci_dma_sync_single_for_cpu(bp->pdev, map,
730 rh = (struct rx_header *) skb->data;
731 len = cpu_to_le16(rh->len);
732 if ((len > (RX_PKT_BUF_SZ - bp->rx_offset)) ||
733 (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) {
735 b44_recycle_rx(bp, cons, bp->rx_prod);
737 bp->stats.rx_dropped++;
747 len = cpu_to_le16(rh->len);
748 } while (len == 0 && i++ < 5);
756 if (len > RX_COPY_THRESHOLD) {
758 skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod);
761 pci_unmap_single(bp->pdev, map,
762 skb_size, PCI_DMA_FROMDEVICE);
763 /* Leave out rx_header */
764 skb_put(skb, len+bp->rx_offset);
765 skb_pull(skb,bp->rx_offset);
767 struct sk_buff *copy_skb;
769 b44_recycle_rx(bp, cons, bp->rx_prod);
770 copy_skb = dev_alloc_skb(len + 2);
771 if (copy_skb == NULL)
772 goto drop_it_no_recycle;
774 copy_skb->dev = bp->dev;
775 skb_reserve(copy_skb, 2);
776 skb_put(copy_skb, len);
777 /* DMA sync done above, copy just the actual packet */
778 memcpy(copy_skb->data, skb->data+bp->rx_offset, len);
782 skb->ip_summed = CHECKSUM_NONE;
783 skb->protocol = eth_type_trans(skb, bp->dev);
784 netif_receive_skb(skb);
785 bp->dev->last_rx = jiffies;
789 bp->rx_prod = (bp->rx_prod + 1) &
790 (B44_RX_RING_SIZE - 1);
791 cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
795 bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
800 static int b44_poll(struct net_device *netdev, int *budget)
802 struct b44 *bp = netdev_priv(netdev);
805 spin_lock_irq(&bp->lock);
807 if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
808 /* spin_lock(&bp->tx_lock); */
810 /* spin_unlock(&bp->tx_lock); */
812 spin_unlock_irq(&bp->lock);
815 if (bp->istat & ISTAT_RX) {
816 int orig_budget = *budget;
819 if (orig_budget > netdev->quota)
820 orig_budget = netdev->quota;
822 work_done = b44_rx(bp, orig_budget);
824 *budget -= work_done;
825 netdev->quota -= work_done;
827 if (work_done >= orig_budget)
831 if (bp->istat & ISTAT_ERRORS) {
832 spin_lock_irq(&bp->lock);
836 netif_wake_queue(bp->dev);
837 spin_unlock_irq(&bp->lock);
842 netif_rx_complete(netdev);
846 return (done ? 0 : 1);
849 static irqreturn_t b44_interrupt(int irq, void *dev_id, struct pt_regs *regs)
851 struct net_device *dev = dev_id;
852 struct b44 *bp = netdev_priv(dev);
857 spin_lock_irqsave(&bp->lock, flags);
859 istat = br32(bp, B44_ISTAT);
860 imask = br32(bp, B44_IMASK);
862 /* ??? What the fuck is the purpose of the interrupt mask
863 * ??? register if we have to mask it out by hand anyways?
868 if (netif_rx_schedule_prep(dev)) {
869 /* NOTE: These writes are posted by the readback of
870 * the ISTAT register below.
873 __b44_disable_ints(bp);
874 __netif_rx_schedule(dev);
876 printk(KERN_ERR PFX "%s: Error, poll already scheduled\n",
880 bw32(bp, B44_ISTAT, istat);
883 spin_unlock_irqrestore(&bp->lock, flags);
884 return IRQ_RETVAL(handled);
887 static void b44_tx_timeout(struct net_device *dev)
889 struct b44 *bp = netdev_priv(dev);
891 printk(KERN_ERR PFX "%s: transmit timed out, resetting\n",
894 spin_lock_irq(&bp->lock);
900 spin_unlock_irq(&bp->lock);
904 netif_wake_queue(dev);
907 static int b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
909 struct b44 *bp = netdev_priv(dev);
911 u32 len, entry, ctrl;
914 spin_lock_irq(&bp->lock);
916 /* This is a hard error, log it. */
917 if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
918 netif_stop_queue(dev);
919 spin_unlock_irq(&bp->lock);
920 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
926 mapping = pci_map_single(bp->pdev, skb->data, len, PCI_DMA_TODEVICE);
927 if(mapping+len > B44_DMA_MASK) {
928 /* Chip can't handle DMA to/from >1GB, use bounce buffer */
929 pci_unmap_single(bp->pdev, mapping, len,PCI_DMA_TODEVICE);
930 memcpy(bp->tx_bufs+entry*TX_PKT_BUF_SZ,skb->data,skb->len);
931 mapping = pci_map_single(bp->pdev, bp->tx_bufs+entry*TX_PKT_BUF_SZ, len, PCI_DMA_TODEVICE);
934 bp->tx_buffers[entry].skb = skb;
935 pci_unmap_addr_set(&bp->tx_buffers[entry], mapping, mapping);
937 ctrl = (len & DESC_CTRL_LEN);
938 ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
939 if (entry == (B44_TX_RING_SIZE - 1))
940 ctrl |= DESC_CTRL_EOT;
942 bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
943 bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
945 entry = NEXT_TX(entry);
951 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
952 if (bp->flags & B44_FLAG_BUGGY_TXPTR)
953 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
954 if (bp->flags & B44_FLAG_REORDER_BUG)
955 br32(bp, B44_DMATX_PTR);
957 if (TX_BUFFS_AVAIL(bp) < 1)
958 netif_stop_queue(dev);
960 spin_unlock_irq(&bp->lock);
962 dev->trans_start = jiffies;
967 static int b44_change_mtu(struct net_device *dev, int new_mtu)
969 struct b44 *bp = netdev_priv(dev);
971 if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU)
974 if (!netif_running(dev)) {
975 /* We'll just catch it later when the
982 spin_lock_irq(&bp->lock);
987 spin_unlock_irq(&bp->lock);
994 /* Free up pending packets in all rx/tx rings.
996 * The chip has been shut down and the driver detached from
997 * the networking, so no interrupts or new tx packets will
998 * end up in the driver. bp->lock is not held and we are not
999 * in an interrupt context and thus may sleep.
1001 static void b44_free_rings(struct b44 *bp)
1003 struct ring_info *rp;
1006 for (i = 0; i < B44_RX_RING_SIZE; i++) {
1007 rp = &bp->rx_buffers[i];
1009 if (rp->skb == NULL)
1011 pci_unmap_single(bp->pdev,
1012 pci_unmap_addr(rp, mapping),
1014 PCI_DMA_FROMDEVICE);
1015 dev_kfree_skb_any(rp->skb);
1019 /* XXX needs changes once NETIF_F_SG is set... */
1020 for (i = 0; i < B44_TX_RING_SIZE; i++) {
1021 rp = &bp->tx_buffers[i];
1023 if (rp->skb == NULL)
1025 pci_unmap_single(bp->pdev,
1026 pci_unmap_addr(rp, mapping),
1029 dev_kfree_skb_any(rp->skb);
1034 /* Initialize tx/rx rings for packet processing.
1036 * The chip has been shut down and the driver detached from
1037 * the networking, so no interrupts or new tx packets will
1038 * end up in the driver. bp->lock is not held and we are not
1039 * in an interrupt context and thus may sleep.
1041 static void b44_init_rings(struct b44 *bp)
1047 memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
1048 memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
1050 for (i = 0; i < bp->rx_pending; i++) {
1051 if (b44_alloc_rx_skb(bp, -1, i) < 0)
1057 * Must not be invoked with interrupt sources disabled and
1058 * the hardware shutdown down.
1060 static void b44_free_consistent(struct b44 *bp)
1062 if (bp->rx_buffers) {
1063 kfree(bp->rx_buffers);
1064 bp->rx_buffers = NULL;
1066 if (bp->tx_buffers) {
1067 kfree(bp->tx_buffers);
1068 bp->tx_buffers = NULL;
1071 pci_free_consistent(bp->pdev, DMA_TABLE_BYTES,
1072 bp->rx_ring, bp->rx_ring_dma);
1076 pci_free_consistent(bp->pdev, DMA_TABLE_BYTES,
1077 bp->tx_ring, bp->tx_ring_dma);
1081 pci_free_consistent(bp->pdev, B44_TX_RING_SIZE * TX_PKT_BUF_SZ,
1082 bp->tx_bufs, bp->tx_bufs_dma);
1088 * Must not be invoked with interrupt sources disabled and
1089 * the hardware shutdown down. Can sleep.
1091 static int b44_alloc_consistent(struct b44 *bp)
1095 size = B44_RX_RING_SIZE * sizeof(struct ring_info);
1096 bp->rx_buffers = kmalloc(size, GFP_KERNEL);
1097 if (!bp->rx_buffers)
1099 memset(bp->rx_buffers, 0, size);
1101 size = B44_TX_RING_SIZE * sizeof(struct ring_info);
1102 bp->tx_buffers = kmalloc(size, GFP_KERNEL);
1103 if (!bp->tx_buffers)
1105 memset(bp->tx_buffers, 0, size);
1107 size = B44_TX_RING_SIZE * TX_PKT_BUF_SZ;
1108 bp->tx_bufs = pci_alloc_consistent(bp->pdev, size, &bp->tx_bufs_dma);
1111 memset(bp->tx_bufs, 0, size);
1113 size = DMA_TABLE_BYTES;
1114 bp->rx_ring = pci_alloc_consistent(bp->pdev, size, &bp->rx_ring_dma);
1118 bp->tx_ring = pci_alloc_consistent(bp->pdev, size, &bp->tx_ring_dma);
1125 b44_free_consistent(bp);
1129 /* bp->lock is held. */
1130 static void b44_clear_stats(struct b44 *bp)
1134 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
1135 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL)
1137 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL)
1141 /* bp->lock is held. */
1142 static void b44_chip_reset(struct b44 *bp)
1144 if (ssb_is_core_up(bp)) {
1145 bw32(bp, B44_RCV_LAZY, 0);
1146 bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
1147 b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 100, 1);
1148 bw32(bp, B44_DMATX_CTRL, 0);
1149 bp->tx_prod = bp->tx_cons = 0;
1150 if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
1151 b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
1154 bw32(bp, B44_DMARX_CTRL, 0);
1155 bp->rx_prod = bp->rx_cons = 0;
1157 ssb_pci_setup(bp, (bp->core_unit == 0 ?
1164 b44_clear_stats(bp);
1166 /* Make PHY accessible. */
1167 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1168 (0x0d & MDIO_CTRL_MAXF_MASK)));
1169 br32(bp, B44_MDIO_CTRL);
1171 if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
1172 bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
1173 br32(bp, B44_ENET_CTRL);
1174 bp->flags &= ~B44_FLAG_INTERNAL_PHY;
1176 u32 val = br32(bp, B44_DEVCTRL);
1178 if (val & DEVCTRL_EPR) {
1179 bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
1180 br32(bp, B44_DEVCTRL);
1183 bp->flags |= B44_FLAG_INTERNAL_PHY;
1187 /* bp->lock is held. */
1188 static void b44_halt(struct b44 *bp)
1190 b44_disable_ints(bp);
1194 /* bp->lock is held. */
1195 static void __b44_set_mac_addr(struct b44 *bp)
1197 bw32(bp, B44_CAM_CTRL, 0);
1198 if (!(bp->dev->flags & IFF_PROMISC)) {
1201 __b44_cam_write(bp, bp->dev->dev_addr, 0);
1202 val = br32(bp, B44_CAM_CTRL);
1203 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1207 static int b44_set_mac_addr(struct net_device *dev, void *p)
1209 struct b44 *bp = netdev_priv(dev);
1210 struct sockaddr *addr = p;
1212 if (netif_running(dev))
1215 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1217 spin_lock_irq(&bp->lock);
1218 __b44_set_mac_addr(bp);
1219 spin_unlock_irq(&bp->lock);
1224 /* Called at device open time to get the chip ready for
1225 * packet processing. Invoked with bp->lock held.
1227 static void __b44_set_rx_mode(struct net_device *);
1228 static void b44_init_hw(struct b44 *bp)
1236 /* Enable CRC32, set proper LED modes and power on PHY */
1237 bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
1238 bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
1240 /* This sets the MAC address too. */
1241 __b44_set_rx_mode(bp->dev);
1243 /* MTU + eth header + possible VLAN tag + struct rx_header */
1244 bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1245 bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1247 bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
1248 bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
1249 bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
1250 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
1251 (bp->rx_offset << DMARX_CTRL_ROSHIFT)));
1252 bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
1254 bw32(bp, B44_DMARX_PTR, bp->rx_pending);
1255 bp->rx_prod = bp->rx_pending;
1257 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
1259 val = br32(bp, B44_ENET_CTRL);
1260 bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
1263 static int b44_open(struct net_device *dev)
1265 struct b44 *bp = netdev_priv(dev);
1268 err = b44_alloc_consistent(bp);
1272 err = request_irq(dev->irq, b44_interrupt, SA_SHIRQ, dev->name, dev);
1276 spin_lock_irq(&bp->lock);
1280 bp->flags |= B44_FLAG_INIT_COMPLETE;
1282 spin_unlock_irq(&bp->lock);
1284 init_timer(&bp->timer);
1285 bp->timer.expires = jiffies + HZ;
1286 bp->timer.data = (unsigned long) bp;
1287 bp->timer.function = b44_timer;
1288 add_timer(&bp->timer);
1290 b44_enable_ints(bp);
1295 b44_free_consistent(bp);
1300 /*static*/ void b44_dump_state(struct b44 *bp)
1302 u32 val32, val32_2, val32_3, val32_4, val32_5;
1305 pci_read_config_word(bp->pdev, PCI_STATUS, &val16);
1306 printk("DEBUG: PCI status [%04x] \n", val16);
1311 #ifdef CONFIG_NET_POLL_CONTROLLER
1313 * Polling receive - used by netconsole and other diagnostic tools
1314 * to allow network i/o with interrupts disabled.
1316 static void b44_poll_controller(struct net_device *dev)
1318 disable_irq(dev->irq);
1319 b44_interrupt(dev->irq, dev, NULL);
1320 enable_irq(dev->irq);
1324 static int b44_close(struct net_device *dev)
1326 struct b44 *bp = netdev_priv(dev);
1328 netif_stop_queue(dev);
1330 del_timer_sync(&bp->timer);
1332 spin_lock_irq(&bp->lock);
1339 bp->flags &= ~B44_FLAG_INIT_COMPLETE;
1340 netif_carrier_off(bp->dev);
1342 spin_unlock_irq(&bp->lock);
1344 free_irq(dev->irq, dev);
1346 b44_free_consistent(bp);
1351 static struct net_device_stats *b44_get_stats(struct net_device *dev)
1353 struct b44 *bp = netdev_priv(dev);
1354 struct net_device_stats *nstat = &bp->stats;
1355 struct b44_hw_stats *hwstat = &bp->hw_stats;
1357 /* Convert HW stats into netdevice stats. */
1358 nstat->rx_packets = hwstat->rx_pkts;
1359 nstat->tx_packets = hwstat->tx_pkts;
1360 nstat->rx_bytes = hwstat->rx_octets;
1361 nstat->tx_bytes = hwstat->tx_octets;
1362 nstat->tx_errors = (hwstat->tx_jabber_pkts +
1363 hwstat->tx_oversize_pkts +
1364 hwstat->tx_underruns +
1365 hwstat->tx_excessive_cols +
1366 hwstat->tx_late_cols);
1367 nstat->multicast = hwstat->tx_multicast_pkts;
1368 nstat->collisions = hwstat->tx_total_cols;
1370 nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
1371 hwstat->rx_undersize);
1372 nstat->rx_over_errors = hwstat->rx_missed_pkts;
1373 nstat->rx_frame_errors = hwstat->rx_align_errs;
1374 nstat->rx_crc_errors = hwstat->rx_crc_errs;
1375 nstat->rx_errors = (hwstat->rx_jabber_pkts +
1376 hwstat->rx_oversize_pkts +
1377 hwstat->rx_missed_pkts +
1378 hwstat->rx_crc_align_errs +
1379 hwstat->rx_undersize +
1380 hwstat->rx_crc_errs +
1381 hwstat->rx_align_errs +
1382 hwstat->rx_symbol_errs);
1384 nstat->tx_aborted_errors = hwstat->tx_underruns;
1386 /* Carrier lost counter seems to be broken for some devices */
1387 nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
1393 static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
1395 struct dev_mc_list *mclist;
1398 num_ents = min_t(int, dev->mc_count, B44_MCAST_TABLE_SIZE);
1399 mclist = dev->mc_list;
1400 for (i = 0; mclist && i < num_ents; i++, mclist = mclist->next) {
1401 __b44_cam_write(bp, mclist->dmi_addr, i + 1);
1406 static void __b44_set_rx_mode(struct net_device *dev)
1408 struct b44 *bp = netdev_priv(dev);
1411 unsigned char zero[6] = {0,0,0,0,0,0};
1413 val = br32(bp, B44_RXCONFIG);
1414 val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
1415 if (dev->flags & IFF_PROMISC) {
1416 val |= RXCONFIG_PROMISC;
1417 bw32(bp, B44_RXCONFIG, val);
1419 __b44_set_mac_addr(bp);
1421 if (dev->flags & IFF_ALLMULTI)
1422 val |= RXCONFIG_ALLMULTI;
1424 i=__b44_load_mcast(bp, dev);
1427 __b44_cam_write(bp, zero, i);
1429 bw32(bp, B44_RXCONFIG, val);
1430 val = br32(bp, B44_CAM_CTRL);
1431 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1435 static void b44_set_rx_mode(struct net_device *dev)
1437 struct b44 *bp = netdev_priv(dev);
1439 spin_lock_irq(&bp->lock);
1440 __b44_set_rx_mode(dev);
1441 spin_unlock_irq(&bp->lock);
1444 static u32 b44_get_msglevel(struct net_device *dev)
1446 struct b44 *bp = netdev_priv(dev);
1447 return bp->msg_enable;
1450 static void b44_set_msglevel(struct net_device *dev, u32 value)
1452 struct b44 *bp = netdev_priv(dev);
1453 bp->msg_enable = value;
1456 static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1458 struct b44 *bp = netdev_priv(dev);
1459 struct pci_dev *pci_dev = bp->pdev;
1461 strcpy (info->driver, DRV_MODULE_NAME);
1462 strcpy (info->version, DRV_MODULE_VERSION);
1463 strcpy (info->bus_info, pci_name(pci_dev));
1466 static int b44_nway_reset(struct net_device *dev)
1468 struct b44 *bp = netdev_priv(dev);
1472 spin_lock_irq(&bp->lock);
1473 b44_readphy(bp, MII_BMCR, &bmcr);
1474 b44_readphy(bp, MII_BMCR, &bmcr);
1476 if (bmcr & BMCR_ANENABLE) {
1477 b44_writephy(bp, MII_BMCR,
1478 bmcr | BMCR_ANRESTART);
1481 spin_unlock_irq(&bp->lock);
1486 static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1488 struct b44 *bp = netdev_priv(dev);
1490 if (!(bp->flags & B44_FLAG_INIT_COMPLETE))
1492 cmd->supported = (SUPPORTED_Autoneg);
1493 cmd->supported |= (SUPPORTED_100baseT_Half |
1494 SUPPORTED_100baseT_Full |
1495 SUPPORTED_10baseT_Half |
1496 SUPPORTED_10baseT_Full |
1499 cmd->advertising = 0;
1500 if (bp->flags & B44_FLAG_ADV_10HALF)
1501 cmd->advertising |= ADVERTISE_10HALF;
1502 if (bp->flags & B44_FLAG_ADV_10FULL)
1503 cmd->advertising |= ADVERTISE_10FULL;
1504 if (bp->flags & B44_FLAG_ADV_100HALF)
1505 cmd->advertising |= ADVERTISE_100HALF;
1506 if (bp->flags & B44_FLAG_ADV_100FULL)
1507 cmd->advertising |= ADVERTISE_100FULL;
1508 cmd->advertising |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
1509 cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ?
1510 SPEED_100 : SPEED_10;
1511 cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
1512 DUPLEX_FULL : DUPLEX_HALF;
1514 cmd->phy_address = bp->phy_addr;
1515 cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ?
1516 XCVR_INTERNAL : XCVR_EXTERNAL;
1517 cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
1518 AUTONEG_DISABLE : AUTONEG_ENABLE;
1524 static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1526 struct b44 *bp = netdev_priv(dev);
1528 if (!(bp->flags & B44_FLAG_INIT_COMPLETE))
1531 /* We do not support gigabit. */
1532 if (cmd->autoneg == AUTONEG_ENABLE) {
1533 if (cmd->advertising &
1534 (ADVERTISED_1000baseT_Half |
1535 ADVERTISED_1000baseT_Full))
1537 } else if ((cmd->speed != SPEED_100 &&
1538 cmd->speed != SPEED_10) ||
1539 (cmd->duplex != DUPLEX_HALF &&
1540 cmd->duplex != DUPLEX_FULL)) {
1544 spin_lock_irq(&bp->lock);
1546 if (cmd->autoneg == AUTONEG_ENABLE) {
1547 bp->flags &= ~B44_FLAG_FORCE_LINK;
1548 bp->flags &= ~(B44_FLAG_ADV_10HALF |
1549 B44_FLAG_ADV_10FULL |
1550 B44_FLAG_ADV_100HALF |
1551 B44_FLAG_ADV_100FULL);
1552 if (cmd->advertising & ADVERTISE_10HALF)
1553 bp->flags |= B44_FLAG_ADV_10HALF;
1554 if (cmd->advertising & ADVERTISE_10FULL)
1555 bp->flags |= B44_FLAG_ADV_10FULL;
1556 if (cmd->advertising & ADVERTISE_100HALF)
1557 bp->flags |= B44_FLAG_ADV_100HALF;
1558 if (cmd->advertising & ADVERTISE_100FULL)
1559 bp->flags |= B44_FLAG_ADV_100FULL;
1561 bp->flags |= B44_FLAG_FORCE_LINK;
1562 if (cmd->speed == SPEED_100)
1563 bp->flags |= B44_FLAG_100_BASE_T;
1564 if (cmd->duplex == DUPLEX_FULL)
1565 bp->flags |= B44_FLAG_FULL_DUPLEX;
1570 spin_unlock_irq(&bp->lock);
1575 static void b44_get_ringparam(struct net_device *dev,
1576 struct ethtool_ringparam *ering)
1578 struct b44 *bp = netdev_priv(dev);
1580 ering->rx_max_pending = B44_RX_RING_SIZE - 1;
1581 ering->rx_pending = bp->rx_pending;
1583 /* XXX ethtool lacks a tx_max_pending, oops... */
1586 static int b44_set_ringparam(struct net_device *dev,
1587 struct ethtool_ringparam *ering)
1589 struct b44 *bp = netdev_priv(dev);
1591 if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
1592 (ering->rx_mini_pending != 0) ||
1593 (ering->rx_jumbo_pending != 0) ||
1594 (ering->tx_pending > B44_TX_RING_SIZE - 1))
1597 spin_lock_irq(&bp->lock);
1599 bp->rx_pending = ering->rx_pending;
1600 bp->tx_pending = ering->tx_pending;
1605 netif_wake_queue(bp->dev);
1606 spin_unlock_irq(&bp->lock);
1608 b44_enable_ints(bp);
1613 static void b44_get_pauseparam(struct net_device *dev,
1614 struct ethtool_pauseparam *epause)
1616 struct b44 *bp = netdev_priv(dev);
1619 (bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
1621 (bp->flags & B44_FLAG_RX_PAUSE) != 0;
1623 (bp->flags & B44_FLAG_TX_PAUSE) != 0;
1626 static int b44_set_pauseparam(struct net_device *dev,
1627 struct ethtool_pauseparam *epause)
1629 struct b44 *bp = netdev_priv(dev);
1631 spin_lock_irq(&bp->lock);
1632 if (epause->autoneg)
1633 bp->flags |= B44_FLAG_PAUSE_AUTO;
1635 bp->flags &= ~B44_FLAG_PAUSE_AUTO;
1636 if (epause->rx_pause)
1637 bp->flags |= B44_FLAG_RX_PAUSE;
1639 bp->flags &= ~B44_FLAG_RX_PAUSE;
1640 if (epause->tx_pause)
1641 bp->flags |= B44_FLAG_TX_PAUSE;
1643 bp->flags &= ~B44_FLAG_TX_PAUSE;
1644 if (bp->flags & B44_FLAG_PAUSE_AUTO) {
1649 __b44_set_flow_ctrl(bp, bp->flags);
1651 spin_unlock_irq(&bp->lock);
1653 b44_enable_ints(bp);
1658 static struct ethtool_ops b44_ethtool_ops = {
1659 .get_drvinfo = b44_get_drvinfo,
1660 .get_settings = b44_get_settings,
1661 .set_settings = b44_set_settings,
1662 .nway_reset = b44_nway_reset,
1663 .get_link = ethtool_op_get_link,
1664 .get_ringparam = b44_get_ringparam,
1665 .set_ringparam = b44_set_ringparam,
1666 .get_pauseparam = b44_get_pauseparam,
1667 .set_pauseparam = b44_set_pauseparam,
1668 .get_msglevel = b44_get_msglevel,
1669 .set_msglevel = b44_set_msglevel,
1672 static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1674 struct mii_ioctl_data *data = if_mii(ifr);
1675 struct b44 *bp = netdev_priv(dev);
1678 spin_lock_irq(&bp->lock);
1679 err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL);
1680 spin_unlock_irq(&bp->lock);
1685 /* Read 128-bytes of EEPROM. */
1686 static int b44_read_eeprom(struct b44 *bp, u8 *data)
1689 u16 *ptr = (u16 *) data;
1691 for (i = 0; i < 128; i += 2)
1692 ptr[i / 2] = readw(bp->regs + 4096 + i);
1697 static int __devinit b44_get_invariants(struct b44 *bp)
1702 err = b44_read_eeprom(bp, &eeprom[0]);
1706 bp->dev->dev_addr[0] = eeprom[79];
1707 bp->dev->dev_addr[1] = eeprom[78];
1708 bp->dev->dev_addr[2] = eeprom[81];
1709 bp->dev->dev_addr[3] = eeprom[80];
1710 bp->dev->dev_addr[4] = eeprom[83];
1711 bp->dev->dev_addr[5] = eeprom[82];
1713 bp->phy_addr = eeprom[90] & 0x1f;
1715 /* With this, plus the rx_header prepended to the data by the
1716 * hardware, we'll land the ethernet header on a 2-byte boundary.
1720 bp->imask = IMASK_DEF;
1722 bp->core_unit = ssb_core_unit(bp);
1723 bp->dma_offset = SB_PCI_DMA;
1725 /* XXX - really required?
1726 bp->flags |= B44_FLAG_BUGGY_TXPTR;
1732 static int __devinit b44_init_one(struct pci_dev *pdev,
1733 const struct pci_device_id *ent)
1735 static int b44_version_printed = 0;
1736 unsigned long b44reg_base, b44reg_len;
1737 struct net_device *dev;
1741 if (b44_version_printed++ == 0)
1742 printk(KERN_INFO "%s", version);
1744 err = pci_enable_device(pdev);
1746 printk(KERN_ERR PFX "Cannot enable PCI device, "
1751 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1752 printk(KERN_ERR PFX "Cannot find proper PCI device "
1753 "base address, aborting.\n");
1755 goto err_out_disable_pdev;
1758 err = pci_request_regions(pdev, DRV_MODULE_NAME);
1760 printk(KERN_ERR PFX "Cannot obtain PCI resources, "
1762 goto err_out_disable_pdev;
1765 pci_set_master(pdev);
1767 err = pci_set_dma_mask(pdev, (u64) B44_DMA_MASK);
1769 printk(KERN_ERR PFX "No usable DMA configuration, "
1771 goto err_out_free_res;
1774 err = pci_set_consistent_dma_mask(pdev, (u64) B44_DMA_MASK);
1776 printk(KERN_ERR PFX "No usable DMA configuration, "
1778 goto err_out_free_res;
1781 b44reg_base = pci_resource_start(pdev, 0);
1782 b44reg_len = pci_resource_len(pdev, 0);
1784 dev = alloc_etherdev(sizeof(*bp));
1786 printk(KERN_ERR PFX "Etherdev alloc failed, aborting.\n");
1788 goto err_out_free_res;
1791 SET_MODULE_OWNER(dev);
1792 SET_NETDEV_DEV(dev,&pdev->dev);
1794 /* No interesting netdevice features in this card... */
1797 bp = netdev_priv(dev);
1801 bp->msg_enable = (1 << b44_debug) - 1;
1803 bp->msg_enable = B44_DEF_MSG_ENABLE;
1805 spin_lock_init(&bp->lock);
1807 bp->regs = ioremap(b44reg_base, b44reg_len);
1808 if (bp->regs == 0UL) {
1809 printk(KERN_ERR PFX "Cannot map device registers, "
1812 goto err_out_free_dev;
1815 bp->rx_pending = B44_DEF_RX_RING_PENDING;
1816 bp->tx_pending = B44_DEF_TX_RING_PENDING;
1818 dev->open = b44_open;
1819 dev->stop = b44_close;
1820 dev->hard_start_xmit = b44_start_xmit;
1821 dev->get_stats = b44_get_stats;
1822 dev->set_multicast_list = b44_set_rx_mode;
1823 dev->set_mac_address = b44_set_mac_addr;
1824 dev->do_ioctl = b44_ioctl;
1825 dev->tx_timeout = b44_tx_timeout;
1826 dev->poll = b44_poll;
1828 dev->watchdog_timeo = B44_TX_TIMEOUT;
1829 #ifdef CONFIG_NET_POLL_CONTROLLER
1830 dev->poll_controller = b44_poll_controller;
1832 dev->change_mtu = b44_change_mtu;
1833 dev->irq = pdev->irq;
1834 SET_ETHTOOL_OPS(dev, &b44_ethtool_ops);
1836 err = b44_get_invariants(bp);
1838 printk(KERN_ERR PFX "Problem fetching invariants of chip, "
1840 goto err_out_iounmap;
1843 bp->mii_if.dev = dev;
1844 bp->mii_if.mdio_read = b44_mii_read;
1845 bp->mii_if.mdio_write = b44_mii_write;
1846 bp->mii_if.phy_id = bp->phy_addr;
1847 bp->mii_if.phy_id_mask = 0x1f;
1848 bp->mii_if.reg_num_mask = 0x1f;
1850 /* By default, advertise all speed/duplex settings. */
1851 bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
1852 B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
1854 /* By default, auto-negotiate PAUSE. */
1855 bp->flags |= B44_FLAG_PAUSE_AUTO;
1857 err = register_netdev(dev);
1859 printk(KERN_ERR PFX "Cannot register net device, "
1861 goto err_out_iounmap;
1864 pci_set_drvdata(pdev, dev);
1866 pci_save_state(bp->pdev);
1868 printk(KERN_INFO "%s: Broadcom 4400 10/100BaseT Ethernet ", dev->name);
1869 for (i = 0; i < 6; i++)
1870 printk("%2.2x%c", dev->dev_addr[i],
1871 i == 5 ? '\n' : ':');
1882 pci_release_regions(pdev);
1884 err_out_disable_pdev:
1885 pci_disable_device(pdev);
1886 pci_set_drvdata(pdev, NULL);
1890 static void __devexit b44_remove_one(struct pci_dev *pdev)
1892 struct net_device *dev = pci_get_drvdata(pdev);
1895 struct b44 *bp = netdev_priv(dev);
1897 unregister_netdev(dev);
1900 pci_release_regions(pdev);
1901 pci_disable_device(pdev);
1902 pci_set_drvdata(pdev, NULL);
1906 static int b44_suspend(struct pci_dev *pdev, u32 state)
1908 struct net_device *dev = pci_get_drvdata(pdev);
1909 struct b44 *bp = netdev_priv(dev);
1911 if (!netif_running(dev))
1914 del_timer_sync(&bp->timer);
1916 spin_lock_irq(&bp->lock);
1919 netif_carrier_off(bp->dev);
1920 netif_device_detach(bp->dev);
1923 spin_unlock_irq(&bp->lock);
1927 static int b44_resume(struct pci_dev *pdev)
1929 struct net_device *dev = pci_get_drvdata(pdev);
1930 struct b44 *bp = netdev_priv(dev);
1932 pci_restore_state(pdev);
1934 if (!netif_running(dev))
1937 spin_lock_irq(&bp->lock);
1941 netif_device_attach(bp->dev);
1942 spin_unlock_irq(&bp->lock);
1944 bp->timer.expires = jiffies + HZ;
1945 add_timer(&bp->timer);
1947 b44_enable_ints(bp);
1951 static struct pci_driver b44_driver = {
1952 .name = DRV_MODULE_NAME,
1953 .id_table = b44_pci_tbl,
1954 .probe = b44_init_one,
1955 .remove = __devexit_p(b44_remove_one),
1956 .suspend = b44_suspend,
1957 .resume = b44_resume,
1960 static int __init b44_init(void)
1962 return pci_module_init(&b44_driver);
1965 static void __exit b44_cleanup(void)
1967 pci_unregister_driver(&b44_driver);
1970 module_init(b44_init);
1971 module_exit(b44_cleanup);