91 static void qec_init(struct bigmac *bp)  in qec_init()  argument
93 	unsigned long gregs = bp->gregs;  in qec_init()
94 	struct sbus_dev *qec_sdev = bp->qec_sdev;  in qec_init()
95 	u8 bsizes = bp->bigmac_bursts;  in qec_init()
158 static void bigmac_stop(struct bigmac *bp)  in bigmac_stop()  argument
160 	bigmac_tx_reset(bp->bregs);  in bigmac_stop()
161 	bigmac_rx_reset(bp->bregs);  in bigmac_stop()
164 static void bigmac_get_counters(struct bigmac *bp, unsigned long bregs)  in bigmac_get_counters()  argument
166 	struct net_device_stats *stats = &bp->enet_stats;  in bigmac_get_counters()
186 static void bigmac_clean_rings(struct bigmac *bp)  in bigmac_clean_rings()  argument
191 		if (bp->rx_skbs[i] != NULL) {  in bigmac_clean_rings()
192 			dev_kfree_skb_any(bp->rx_skbs[i]);  in bigmac_clean_rings()
193 			bp->rx_skbs[i] = NULL;  in bigmac_clean_rings()
198 		if (bp->tx_skbs[i] != NULL) {  in bigmac_clean_rings()
199 			dev_kfree_skb_any(bp->tx_skbs[i]);  in bigmac_clean_rings()
200 			bp->tx_skbs[i] = NULL;  in bigmac_clean_rings()
205 static void bigmac_init_rings(struct bigmac *bp, int from_irq)  in bigmac_init_rings()  argument
207 	struct bmac_init_block *bb = bp->bmac_block;  in bigmac_init_rings()
208 	struct net_device *dev = bp->dev;  in bigmac_init_rings()
214 	bp->rx_new = bp->rx_old = bp->tx_new = bp->tx_old = 0;  in bigmac_init_rings()
217 	bigmac_clean_rings(bp);  in bigmac_init_rings()
227 		bp->rx_skbs[i] = skb;  in bigmac_init_rings()
235 			sbus_map_single(bp->bigmac_sdev, skb->data,  in bigmac_init_rings()
261 static void write_tcvr_bit(struct bigmac *bp, unsigned long tregs, int bit)  in write_tcvr_bit()  argument
263 	if (bp->tcvr_type == internal) {  in write_tcvr_bit()
271 	} else if (bp->tcvr_type == external) {  in write_tcvr_bit()
284 static int read_tcvr_bit(struct bigmac *bp, unsigned long tregs)  in read_tcvr_bit()  argument
288 	if (bp->tcvr_type == internal) {  in read_tcvr_bit()
295 	} else if (bp->tcvr_type == external) {  in read_tcvr_bit()
307 static int read_tcvr_bit2(struct bigmac *bp, unsigned long tregs)  in read_tcvr_bit2()  argument
311 	if (bp->tcvr_type == internal) {  in read_tcvr_bit2()
317 	} else if (bp->tcvr_type == external) {  in read_tcvr_bit2()
329 static void put_tcvr_byte(struct bigmac *bp,  in put_tcvr_byte()  argument
336 		write_tcvr_bit(bp, tregs, ((byte >> shift) & 1));  in put_tcvr_byte()
341 static void bigmac_tcvr_write(struct bigmac *bp, unsigned long tregs,  in bigmac_tcvr_write()  argument
348 	switch(bp->tcvr_type) {  in bigmac_tcvr_write()
359 	write_tcvr_bit(bp, tregs, 0);  in bigmac_tcvr_write()
360 	write_tcvr_bit(bp, tregs, 1);  in bigmac_tcvr_write()
361 	write_tcvr_bit(bp, tregs, 0);  in bigmac_tcvr_write()
362 	write_tcvr_bit(bp, tregs, 1);  in bigmac_tcvr_write()
364 	put_tcvr_byte(bp, tregs,  in bigmac_tcvr_write()
365 		      ((bp->tcvr_type == internal) ?  in bigmac_tcvr_write()
368 	put_tcvr_byte(bp, tregs, reg);  in bigmac_tcvr_write()
370 	write_tcvr_bit(bp, tregs, 1);  in bigmac_tcvr_write()
371 	write_tcvr_bit(bp, tregs, 0);  in bigmac_tcvr_write()
375 		write_tcvr_bit(bp, tregs, (val >> shift) & 1);  in bigmac_tcvr_write()
380 static unsigned short bigmac_tcvr_read(struct bigmac *bp,  in bigmac_tcvr_read()  argument
387 	switch(bp->tcvr_type) {  in bigmac_tcvr_read()
398 	write_tcvr_bit(bp, tregs, 0);  in bigmac_tcvr_read()
399 	write_tcvr_bit(bp, tregs, 1);  in bigmac_tcvr_read()
400 	write_tcvr_bit(bp, tregs, 1);  in bigmac_tcvr_read()
401 	write_tcvr_bit(bp, tregs, 0);  in bigmac_tcvr_read()
403 	put_tcvr_byte(bp, tregs,  in bigmac_tcvr_read()
404 		      ((bp->tcvr_type == internal) ?  in bigmac_tcvr_read()
407 	put_tcvr_byte(bp, tregs, reg);  in bigmac_tcvr_read()
409 	if (bp->tcvr_type == external) {  in bigmac_tcvr_read()
412 		(void) read_tcvr_bit2(bp, tregs);  in bigmac_tcvr_read()
413 		(void) read_tcvr_bit2(bp, tregs);  in bigmac_tcvr_read()
418 			tmp = read_tcvr_bit2(bp, tregs);  in bigmac_tcvr_read()
423 		(void) read_tcvr_bit2(bp, tregs);  in bigmac_tcvr_read()
424 		(void) read_tcvr_bit2(bp, tregs);  in bigmac_tcvr_read()
425 		(void) read_tcvr_bit2(bp, tregs);  in bigmac_tcvr_read()
429 		(void) read_tcvr_bit(bp, tregs);  in bigmac_tcvr_read()
430 		(void) read_tcvr_bit(bp, tregs);  in bigmac_tcvr_read()
435 			tmp = read_tcvr_bit(bp, tregs);  in bigmac_tcvr_read()
440 		(void) read_tcvr_bit(bp, tregs);  in bigmac_tcvr_read()
441 		(void) read_tcvr_bit(bp, tregs);  in bigmac_tcvr_read()
442 		(void) read_tcvr_bit(bp, tregs);  in bigmac_tcvr_read()
447 static void bigmac_tcvr_init(struct bigmac *bp)  in bigmac_tcvr_init()  argument
449 	unsigned long tregs = bp->tregs;  in bigmac_tcvr_init()
466 		bp->tcvr_type = external;  in bigmac_tcvr_init()
471 		bp->tcvr_type = internal;  in bigmac_tcvr_init()
487 static int try_next_permutation(struct bigmac *bp, unsigned long tregs)  in try_next_permutation()  argument
489 	if (bp->sw_bmcr & BMCR_SPEED100) {  in try_next_permutation()
493 		bp->sw_bmcr	= (BMCR_ISOLATE | BMCR_PDOWN | BMCR_LOOPBACK);  in try_next_permutation()
494 		bigmac_tcvr_write(bp, tregs, BIGMAC_BMCR, bp->sw_bmcr);  in try_next_permutation()
495 		bp->sw_bmcr	= (BMCR_RESET);  in try_next_permutation()
496 		bigmac_tcvr_write(bp, tregs, BIGMAC_BMCR, bp->sw_bmcr);  in try_next_permutation()
500 			bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, BIGMAC_BMCR);  in try_next_permutation()
501 			if ((bp->sw_bmcr & BMCR_RESET) == 0)  in try_next_permutation()
506 			printk(KERN_ERR "%s: PHY reset failed.\n", bp->dev->name);  in try_next_permutation()
508 		bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, BIGMAC_BMCR);  in try_next_permutation()
511 		bp->sw_bmcr &= ~(BMCR_SPEED100);  in try_next_permutation()
512 		bigmac_tcvr_write(bp, tregs, BIGMAC_BMCR, bp->sw_bmcr);  in try_next_permutation()
522 	struct bigmac *bp = (struct bigmac *) data;  in bigmac_timer()  local
523 	unsigned long tregs = bp->tregs;  in bigmac_timer()
526 	bp->timer_ticks++;  in bigmac_timer()
527 	if (bp->timer_state == ltrywait) {  in bigmac_timer()
528 		bp->sw_bmsr = bigmac_tcvr_read(bp, tregs, BIGMAC_BMSR);  in bigmac_timer()
529 		bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, BIGMAC_BMCR);  in bigmac_timer()
530 		if (bp->sw_bmsr & BMSR_LSTATUS) {  in bigmac_timer()
532 			       bp->dev->name,  in bigmac_timer()
533 			       (bp->sw_bmcr & BMCR_SPEED100) ?  in bigmac_timer()
535 			bp->timer_state = asleep;  in bigmac_timer()
538 			if (bp->timer_ticks >= 4) {  in bigmac_timer()
541 				ret = try_next_permutation(bp, tregs);  in bigmac_timer()
544 					       bp->dev->name);  in bigmac_timer()
545 					ret = bigmac_init(bp, 0);  in bigmac_timer()
548 						       "BigMAC.\n", bp->dev->name);  in bigmac_timer()
552 				bp->timer_ticks = 0;  in bigmac_timer()
561 		       bp->dev->name);  in bigmac_timer()
563 		bp->timer_ticks = 0;  in bigmac_timer()
564 		bp->timer_state = asleep; /* foo on you */  in bigmac_timer()
568 		bp->bigmac_timer.expires = jiffies + ((12 * HZ)/10); /* 1.2 sec. */  in bigmac_timer()
569 		add_timer(&bp->bigmac_timer);  in bigmac_timer()
576 static void bigmac_begin_auto_negotiation(struct bigmac *bp)  in bigmac_begin_auto_negotiation()  argument
578 	unsigned long tregs = bp->tregs;  in bigmac_begin_auto_negotiation()
582 	bp->sw_bmsr	= bigmac_tcvr_read(bp, tregs, BIGMAC_BMSR);  in bigmac_begin_auto_negotiation()
583 	bp->sw_bmcr	= bigmac_tcvr_read(bp, tregs, BIGMAC_BMCR);  in bigmac_begin_auto_negotiation()
586 	bp->sw_bmcr	= (BMCR_ISOLATE | BMCR_PDOWN | BMCR_LOOPBACK);  in bigmac_begin_auto_negotiation()
587 	bigmac_tcvr_write(bp, tregs, BIGMAC_BMCR, bp->sw_bmcr);  in bigmac_begin_auto_negotiation()
588 	bp->sw_bmcr	= (BMCR_RESET);  in bigmac_begin_auto_negotiation()
589 	bigmac_tcvr_write(bp, tregs, BIGMAC_BMCR, bp->sw_bmcr);  in bigmac_begin_auto_negotiation()
593 		bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, BIGMAC_BMCR);  in bigmac_begin_auto_negotiation()
594 		if ((bp->sw_bmcr & BMCR_RESET) == 0)  in bigmac_begin_auto_negotiation()
599 		printk(KERN_ERR "%s: PHY reset failed.\n", bp->dev->name);  in bigmac_begin_auto_negotiation()
601 	bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, BIGMAC_BMCR);  in bigmac_begin_auto_negotiation()
604 	bp->sw_bmcr |= BMCR_SPEED100;  in bigmac_begin_auto_negotiation()
605 	bigmac_tcvr_write(bp, tregs, BIGMAC_BMCR, bp->sw_bmcr);  in bigmac_begin_auto_negotiation()
607 	bp->timer_state = ltrywait;  in bigmac_begin_auto_negotiation()
608 	bp->timer_ticks = 0;  in bigmac_begin_auto_negotiation()
609 	bp->bigmac_timer.expires = jiffies + (12 * HZ) / 10;  in bigmac_begin_auto_negotiation()
610 	bp->bigmac_timer.data = (unsigned long) bp;  in bigmac_begin_auto_negotiation()
611 	bp->bigmac_timer.function = &bigmac_timer;  in bigmac_begin_auto_negotiation()
612 	add_timer(&bp->bigmac_timer);  in bigmac_begin_auto_negotiation()
615 static int bigmac_init(struct bigmac *bp, int from_irq)  in bigmac_init()  argument
617 	unsigned long gregs        = bp->gregs;  in bigmac_init()
618 	unsigned long cregs        = bp->creg;  in bigmac_init()
619 	unsigned long bregs        = bp->bregs;  in bigmac_init()
620 	unsigned char *e = &bp->dev->dev_addr[0];  in bigmac_init()
623 	bigmac_get_counters(bp, bregs);  in bigmac_init()
629 	qec_init(bp);  in bigmac_init()
632 	bigmac_init_rings(bp, from_irq);  in bigmac_init()
635 	bigmac_tcvr_init(bp);  in bigmac_init()
638 	bigmac_stop(bp);  in bigmac_init()
668 	sbus_writel(bp->bblock_dvma + bib_offset(be_rxd, 0),  in bigmac_init()
670 	sbus_writel(bp->bblock_dvma + bib_offset(be_txd, 0),  in bigmac_init()
704 	bigmac_begin_auto_negotiation(bp);  in bigmac_init()
711 static void bigmac_is_medium_rare(struct bigmac *bp, u32 qec_status, u32 bmac_status)  in bigmac_is_medium_rare()  argument
746 	bigmac_init(bp, 1);  in bigmac_is_medium_rare()
750 static void bigmac_tx(struct bigmac *bp)  in bigmac_tx()  argument
752 	struct be_txd *txbase = &bp->bmac_block->be_txd[0];  in bigmac_tx()
753 	struct net_device *dev = bp->dev;  in bigmac_tx()
756 	spin_lock(&bp->lock);  in bigmac_tx()
758 	elem = bp->tx_old;  in bigmac_tx()
760 	while (elem != bp->tx_new) {  in bigmac_tx()
769 		skb = bp->tx_skbs[elem];  in bigmac_tx()
770 		bp->enet_stats.tx_packets++;  in bigmac_tx()
771 		bp->enet_stats.tx_bytes += skb->len;  in bigmac_tx()
772 		sbus_unmap_single(bp->bigmac_sdev,  in bigmac_tx()
777 		bp->tx_skbs[elem] = NULL;  in bigmac_tx()
783 	bp->tx_old = elem;  in bigmac_tx()
786 	    TX_BUFFS_AVAIL(bp) > 0)  in bigmac_tx()
787 		netif_wake_queue(bp->dev);  in bigmac_tx()
789 	spin_unlock(&bp->lock);  in bigmac_tx()
793 static void bigmac_rx(struct bigmac *bp)  in bigmac_rx()  argument
795 	struct be_rxd *rxbase = &bp->bmac_block->be_rxd[0];  in bigmac_rx()
797 	int elem = bp->rx_new, drops = 0;  in bigmac_rx()
807 			bp->enet_stats.rx_errors++;  in bigmac_rx()
808 			bp->enet_stats.rx_length_errors++;  in bigmac_rx()
812 			bp->enet_stats.rx_dropped++;  in bigmac_rx()
817 		skb = bp->rx_skbs[elem];  in bigmac_rx()
827 			sbus_unmap_single(bp->bigmac_sdev,  in bigmac_rx()
831 			bp->rx_skbs[elem] = new_skb;  in bigmac_rx()
832 			new_skb->dev = bp->dev;  in bigmac_rx()
835 			this->rx_addr = sbus_map_single(bp->bigmac_sdev,  in bigmac_rx()
851 			copy_skb->dev = bp->dev;  in bigmac_rx()
854 			sbus_dma_sync_single(bp->bigmac_sdev,  in bigmac_rx()
866 		skb->protocol = eth_type_trans(skb, bp->dev);  in bigmac_rx()
868 		bp->dev->last_rx = jiffies;  in bigmac_rx()
869 		bp->enet_stats.rx_packets++;  in bigmac_rx()
870 		bp->enet_stats.rx_bytes += len;  in bigmac_rx()
875 	bp->rx_new = elem;  in bigmac_rx()
877 		printk(KERN_NOTICE "%s: Memory squeeze, deferring packet.\n", bp->dev->name);  in bigmac_rx()
882 	struct bigmac *bp = (struct bigmac *) dev_id;  in bigmac_interrupt()  local
888 	bmac_status = sbus_readl(bp->creg + CREG_STAT);  in bigmac_interrupt()
889 	qec_status = sbus_readl(bp->gregs + GLOB_STAT);  in bigmac_interrupt()
894 		bigmac_is_medium_rare(bp, qec_status, bmac_status);  in bigmac_interrupt()
897 		bigmac_tx(bp);  in bigmac_interrupt()
900 		bigmac_rx(bp);  in bigmac_interrupt()
905 	struct bigmac *bp = (struct bigmac *) dev->priv;  in bigmac_open()  local
908 	ret = request_irq(dev->irq, &bigmac_interrupt, SA_SHIRQ, dev->name, bp);  in bigmac_open()
913 	init_timer(&bp->bigmac_timer);  in bigmac_open()
914 	ret = bigmac_init(bp, 0);  in bigmac_open()
916 		free_irq(dev->irq, bp);  in bigmac_open()
922 	struct bigmac *bp = (struct bigmac *) dev->priv;  in bigmac_close()  local
924 	del_timer(&bp->bigmac_timer);  in bigmac_close()
925 	bp->timer_state = asleep;  in bigmac_close()
926 	bp->timer_ticks = 0;  in bigmac_close()
928 	bigmac_stop(bp);  in bigmac_close()
929 	bigmac_clean_rings(bp);  in bigmac_close()
930 	free_irq(dev->irq, bp);  in bigmac_close()
936 	struct bigmac *bp = (struct bigmac *) dev->priv;  in bigmac_tx_timeout()  local
938 	bigmac_init(bp, 0);  in bigmac_tx_timeout()
945 	struct bigmac *bp = (struct bigmac *) dev->priv;  in bigmac_start_xmit()  local
950 	mapping = sbus_map_single(bp->bigmac_sdev, skb->data, len, SBUS_DMA_TODEVICE);  in bigmac_start_xmit()
953 	spin_lock_irq(&bp->lock);  in bigmac_start_xmit()
954 	entry = bp->tx_new;  in bigmac_start_xmit()
956 	bp->bmac_block->be_txd[entry].tx_flags = TXD_UPDATE;  in bigmac_start_xmit()
957 	bp->tx_skbs[entry] = skb;  in bigmac_start_xmit()
958 	bp->bmac_block->be_txd[entry].tx_addr = mapping;  in bigmac_start_xmit()
959 	bp->bmac_block->be_txd[entry].tx_flags =  in bigmac_start_xmit()
961 	bp->tx_new = NEXT_TX(entry);  in bigmac_start_xmit()
962 	if (TX_BUFFS_AVAIL(bp) <= 0)  in bigmac_start_xmit()
964 	spin_unlock_irq(&bp->lock);  in bigmac_start_xmit()
967 	sbus_writel(CREG_CTRL_TWAKEUP, bp->creg + CREG_CTRL);  in bigmac_start_xmit()
977 	struct bigmac *bp = (struct bigmac *) dev->priv;  in bigmac_get_stats()  local
979 	bigmac_get_counters(bp, bp->bregs);  in bigmac_get_stats()
980 	return &bp->enet_stats;  in bigmac_get_stats()
985 	struct bigmac *bp = (struct bigmac *) dev->priv;  in bigmac_set_multicast()  local
986 	unsigned long bregs = bp->bregs;  in bigmac_set_multicast()
1042 	struct bigmac *bp;  in bigmac_ether_init()  local
1067 	bp = dev->priv;  in bigmac_ether_init()
1068 	bp->qec_sdev = qec_sdev;  in bigmac_ether_init()
1069 	bp->bigmac_sdev = qec_sdev->child;  in bigmac_ether_init()
1071 	spin_lock_init(&bp->lock);  in bigmac_ether_init()
1074 	if ((bp->bigmac_sdev->num_registers != 3) ||  in bigmac_ether_init()
1075 	   (bp->qec_sdev->num_registers != 2)) {  in bigmac_ether_init()
1077 		       bp->qec_sdev->num_registers,  in bigmac_ether_init()
1078 		       bp->bigmac_sdev->num_registers);  in bigmac_ether_init()
1084 	bp->gregs = sbus_ioremap(&bp->qec_sdev->resource[0], 0,  in bigmac_ether_init()
1086 	if (!bp->gregs) {  in bigmac_ether_init()
1092 	if ((sbus_readl(bp->gregs + GLOB_CTRL) & 0xf0000000) != GLOB_CTRL_BMODE) {  in bigmac_ether_init()
1098 	if (qec_global_reset(bp->gregs))  in bigmac_ether_init()
1102 	bsizes = prom_getintdefault(bp->qec_sdev->prom_node,  in bigmac_ether_init()
1106 	bsizes_more = prom_getintdefault(bp->qec_sdev->bus->prom_node,  in bigmac_ether_init()
1116 	bp->bigmac_bursts = bsizes;  in bigmac_ether_init()
1119 	qec_init(bp);  in bigmac_ether_init()
1122 	bp->creg = sbus_ioremap(&bp->bigmac_sdev->resource[0], 0,  in bigmac_ether_init()
1124 	if (!bp->creg) {  in bigmac_ether_init()
1130 	bp->bregs = sbus_ioremap(&bp->bigmac_sdev->resource[1], 0,  in bigmac_ether_init()
1132 	if (!bp->bregs) {  in bigmac_ether_init()
1140 	bp->tregs = sbus_ioremap(&bp->bigmac_sdev->resource[2], 0,  in bigmac_ether_init()
1142 	if (!bp->tregs) {  in bigmac_ether_init()
1148 	bigmac_stop(bp);  in bigmac_ether_init()
1151 	bp->bmac_block = sbus_alloc_consistent(bp->bigmac_sdev,  in bigmac_ether_init()
1153 					       &bp->bblock_dvma);  in bigmac_ether_init()
1154 	if (bp->bmac_block == NULL || bp->bblock_dvma == 0) {  in bigmac_ether_init()
1160 	bp->board_rev = prom_getintdefault(bp->bigmac_sdev->prom_node,  in bigmac_ether_init()
1164 	init_timer(&bp->bigmac_timer);  in bigmac_ether_init()
1165 	bp->timer_state = asleep;  in bigmac_ether_init()
1166 	bp->timer_ticks = 0;  in bigmac_ether_init()
1169 	bp->dev = dev;  in bigmac_ether_init()
1184 	dev->irq = bp->bigmac_sdev->irqs[0];  in bigmac_ether_init()
1191 	bp->next_module = root_bigmac_dev;  in bigmac_ether_init()
1192 	root_bigmac_dev = bp;  in bigmac_ether_init()
1199 	if (bp->gregs)  in bigmac_ether_init()
1200 		sbus_iounmap(bp->gregs, GLOB_REG_SIZE);  in bigmac_ether_init()
1201 	if (bp->creg)  in bigmac_ether_init()
1202 		sbus_iounmap(bp->creg, CREG_REG_SIZE);  in bigmac_ether_init()
1203 	if (bp->bregs)  in bigmac_ether_init()
1204 		sbus_iounmap(bp->bregs, BMAC_REG_SIZE);  in bigmac_ether_init()
1205 	if (bp->tregs)  in bigmac_ether_init()
1206 		sbus_iounmap(bp->tregs, TCVR_REG_SIZE);  in bigmac_ether_init()
1208 	if (bp->bmac_block)  in bigmac_ether_init()
1209 		sbus_free_consistent(bp->bigmac_sdev,  in bigmac_ether_init()
1211 				     bp->bmac_block,  in bigmac_ether_init()
1212 				     bp->bblock_dvma);  in bigmac_ether_init()
1272 		struct bigmac *bp = root_bigmac_dev;  in bigmac_cleanup()  local
1275 		sbus_iounmap(bp->gregs, GLOB_REG_SIZE);  in bigmac_cleanup()
1276 		sbus_iounmap(bp->creg, CREG_REG_SIZE);  in bigmac_cleanup()
1277 		sbus_iounmap(bp->bregs, BMAC_REG_SIZE);  in bigmac_cleanup()
1278 		sbus_iounmap(bp->tregs, TCVR_REG_SIZE);  in bigmac_cleanup()
1279 		sbus_free_consistent(bp->bigmac_sdev,  in bigmac_cleanup()
1281 				     bp->bmac_block,  in bigmac_cleanup()
1282 				     bp->bblock_dvma);  in bigmac_cleanup()
1284 		unregister_netdev(bp->dev);  in bigmac_cleanup()
1285 		kfree(bp->dev);  in bigmac_cleanup()