1 // SPDX-License-Identifier: GPL-2.0-only
30 #include <asm/page.h>
38 #define trunc_page(x)	((void *)(((unsigned long)(x)) & ~((unsigned long)(PAGE_SIZE - 1))))
39 #define round_page(x)	trunc_page(((unsigned long)(x)) + ((unsigned long)(PAGE_SIZE - 1)))
180 	dbdma_st32(&dmap->control,  in dbdma_continue()
188 	dbdma_st32(&dmap->control,  in dbdma_reset()
191 	while (dbdma_ld32(&dmap->status) & RUN)  in dbdma_reset()
200 	out_le16(&cp->command, cmd);  in dbdma_setcmd()
201 	out_le16(&cp->req_count, count);  in dbdma_setcmd()
202 	out_le32(&cp->phy_addr, addr);  in dbdma_setcmd()
203 	out_le32(&cp->cmd_dep, cmd_dep);  in dbdma_setcmd()
204 	out_le16(&cp->xfer_status, 0);  in dbdma_setcmd()
205 	out_le16(&cp->res_count, 0);  in dbdma_setcmd()
211 	out_le16((void __iomem *)dev->base_addr + reg_offset, data);  in bmwrite()
218 	return in_le16((void __iomem *)dev->base_addr + reg_offset);  in bmread()
225 	volatile struct dbdma_regs __iomem *rd = bp->rx_dma;  in bmac_enable_and_reset_chip()
226 	volatile struct dbdma_regs __iomem *td = bp->tx_dma;  in bmac_enable_and_reset_chip()
233 	pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 1);  in bmac_enable_and_reset_chip()
243 	while (--nb >= 0) {  in bmac_mif_readbits()
263 	while (--nb >= 0) {  in bmac_mif_writebits()
320 		--i;  in bmac_init_registers()
325 	if (!bp->is_bmac_plus) {  in bmac_init_registers()
367 	for (i=0; i<4; i++) bp->hash_table_mask[i] = 0;  in bmac_init_registers()
368 	bmwrite(dev, BHASH3, bp->hash_table_mask[0]); 	/* bits 15 - 0 */  in bmac_init_registers()
369 	bmwrite(dev, BHASH2, bp->hash_table_mask[1]); 	/* bits 31 - 16 */  in bmac_init_registers()
370 	bmwrite(dev, BHASH1, bp->hash_table_mask[2]); 	/* bits 47 - 32 */  in bmac_init_registers()
371 	bmwrite(dev, BHASH0, bp->hash_table_mask[3]); 	/* bits 63 - 48 */  in bmac_init_registers()
373 	pWord16 = (const unsigned short *)dev->dev_addr;  in bmac_init_registers()
402 	volatile struct dbdma_regs __iomem *rd = bp->rx_dma;  in bmac_start_chip()
431 	if (bp->is_bmac_plus) {  in bmac_init_phy()
462 	spin_lock_irqsave(&bp->lock, flags);  in bmac_suspend()
463 	if (bp->timeout_active) {  in bmac_suspend()
464 		del_timer(&bp->tx_timeout);  in bmac_suspend()
465 		bp->timeout_active = 0;  in bmac_suspend()
467 	disable_irq(dev->irq);  in bmac_suspend()
468 	disable_irq(bp->tx_dma_intr);  in bmac_suspend()
469 	disable_irq(bp->rx_dma_intr);  in bmac_suspend()
470 	bp->sleeping = 1;  in bmac_suspend()
471 	spin_unlock_irqrestore(&bp->lock, flags);  in bmac_suspend()
472 	if (bp->opened) {  in bmac_suspend()
473 		volatile struct dbdma_regs __iomem *rd = bp->rx_dma;  in bmac_suspend()
474 		volatile struct dbdma_regs __iomem *td = bp->tx_dma;  in bmac_suspend()
482 		rd->control = cpu_to_le32(DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE));	/* clear run bit */  in bmac_suspend()
483 		td->control = cpu_to_le32(DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE));	/* clear run bit */  in bmac_suspend()
486 			if (bp->rx_bufs[i] != NULL) {  in bmac_suspend()
487 				dev_kfree_skb(bp->rx_bufs[i]);  in bmac_suspend()
488 				bp->rx_bufs[i] = NULL;  in bmac_suspend()
492 			if (bp->tx_bufs[i] != NULL) {  in bmac_suspend()
493 		       		dev_kfree_skb(bp->tx_bufs[i]);  in bmac_suspend()
494 	       			bp->tx_bufs[i] = NULL;  in bmac_suspend()
498 	pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);  in bmac_suspend()
508 	if (bp->opened)  in bmac_resume()
511 	enable_irq(dev->irq);  in bmac_resume()
512 	enable_irq(bp->tx_dma_intr);  in bmac_resume()
513 	enable_irq(bp->rx_dma_intr);  in bmac_resume()
527 	spin_lock_irqsave(&bp->lock, flags);  in bmac_set_address()
532 	pWord16  = (const unsigned short *)dev->dev_addr;  in bmac_set_address()
537 	spin_unlock_irqrestore(&bp->lock, flags);  in bmac_set_address()
547 	spin_lock_irqsave(&bp->lock, flags);  in bmac_set_timeout()
548 	if (bp->timeout_active)  in bmac_set_timeout()
549 		del_timer(&bp->tx_timeout);  in bmac_set_timeout()
550 	bp->tx_timeout.expires = jiffies + TX_TIMEOUT;  in bmac_set_timeout()
551 	add_timer(&bp->tx_timeout);  in bmac_set_timeout()
552 	bp->timeout_active = 1;  in bmac_set_timeout()
553 	spin_unlock_irqrestore(&bp->lock, flags);  in bmac_set_timeout()
563 	len = skb->len;  in bmac_construct_xmt()
564 	vaddr = skb->data;  in bmac_construct_xmt()
573 	unsigned char *addr = skb? skb->data: bmac_emergency_rxbuf;  in bmac_construct_rxbuff()
582 	volatile struct dbdma_regs __iomem *td = bp->tx_dma;  in bmac_init_tx_ring()
584 	memset((char *)bp->tx_cmds, 0, (N_TX_RING+1) * sizeof(struct dbdma_cmd));  in bmac_init_tx_ring()
586 	bp->tx_empty = 0;  in bmac_init_tx_ring()
587 	bp->tx_fill = 0;  in bmac_init_tx_ring()
588 	bp->tx_fullup = 0;  in bmac_init_tx_ring()
591 	dbdma_setcmd(&bp->tx_cmds[N_TX_RING],  in bmac_init_tx_ring()
592 		     (DBDMA_NOP | BR_ALWAYS), 0, 0, virt_to_bus(bp->tx_cmds));  in bmac_init_tx_ring()
596 	out_le32(&td->wait_sel, 0x00200020);  in bmac_init_tx_ring()
597 	out_le32(&td->cmdptr, virt_to_bus(bp->tx_cmds));  in bmac_init_tx_ring()
604 	volatile struct dbdma_regs __iomem *rd = bp->rx_dma;  in bmac_init_rx_ring()
609 	memset((char *)bp->rx_cmds, 0,  in bmac_init_rx_ring()
612 		if ((skb = bp->rx_bufs[i]) == NULL) {  in bmac_init_rx_ring()
613 			bp->rx_bufs[i] = skb = netdev_alloc_skb(dev, RX_BUFLEN + 2);  in bmac_init_rx_ring()
617 		bmac_construct_rxbuff(skb, &bp->rx_cmds[i]);  in bmac_init_rx_ring()
620 	bp->rx_empty = 0;  in bmac_init_rx_ring()
621 	bp->rx_fill = i;  in bmac_init_rx_ring()
624 	dbdma_setcmd(&bp->rx_cmds[N_RX_RING],  in bmac_init_rx_ring()
625 		     (DBDMA_NOP | BR_ALWAYS), 0, 0, virt_to_bus(bp->rx_cmds));  in bmac_init_rx_ring()
629 	out_le32(&rd->cmdptr, virt_to_bus(bp->rx_cmds));  in bmac_init_rx_ring()
638 	volatile struct dbdma_regs __iomem *td = bp->tx_dma;  in bmac_transmit_packet()
643 	/* 	     bp->tx_empty, bp->tx_fill)); */  in bmac_transmit_packet()
644 	i = bp->tx_fill + 1;  in bmac_transmit_packet()
647 	if (i == bp->tx_empty) {  in bmac_transmit_packet()
649 		bp->tx_fullup = 1;  in bmac_transmit_packet()
651 		return -1;		/* can't take it at the moment */  in bmac_transmit_packet()
654 	dbdma_setcmd(&bp->tx_cmds[i], DBDMA_STOP, 0, 0, 0);  in bmac_transmit_packet()
656 	bmac_construct_xmt(skb, &bp->tx_cmds[bp->tx_fill]);  in bmac_transmit_packet()
658 	bp->tx_bufs[bp->tx_fill] = skb;  in bmac_transmit_packet()
659 	bp->tx_fill = i;  in bmac_transmit_packet()
661 	dev->stats.tx_bytes += skb->len;  in bmac_transmit_packet()
674 	volatile struct dbdma_regs __iomem *rd = bp->rx_dma;  in bmac_rxdma_intr()
682 	spin_lock_irqsave(&bp->lock, flags);  in bmac_rxdma_intr()
688 	last = -1;  in bmac_rxdma_intr()
689 	i = bp->rx_empty;  in bmac_rxdma_intr()
692 		cp = &bp->rx_cmds[i];  in bmac_rxdma_intr()
693 		stat = le16_to_cpu(cp->xfer_status);  in bmac_rxdma_intr()
694 		residual = le16_to_cpu(cp->res_count);  in bmac_rxdma_intr()
697 		nb = RX_BUFLEN - residual - 2;  in bmac_rxdma_intr()
698 		if (nb < (ETHERMINPACKET - ETHERCRC)) {  in bmac_rxdma_intr()
700 			dev->stats.rx_length_errors++;  in bmac_rxdma_intr()
701 			dev->stats.rx_errors++;  in bmac_rxdma_intr()
703 			skb = bp->rx_bufs[i];  in bmac_rxdma_intr()
704 			bp->rx_bufs[i] = NULL;  in bmac_rxdma_intr()
707 			nb -= ETHERCRC;  in bmac_rxdma_intr()
709 			skb->protocol = eth_type_trans(skb, dev);  in bmac_rxdma_intr()
711 			++dev->stats.rx_packets;  in bmac_rxdma_intr()
712 			dev->stats.rx_bytes += nb;  in bmac_rxdma_intr()
714 			++dev->stats.rx_dropped;  in bmac_rxdma_intr()
716 		if ((skb = bp->rx_bufs[i]) == NULL) {  in bmac_rxdma_intr()
717 			bp->rx_bufs[i] = skb = netdev_alloc_skb(dev, RX_BUFLEN + 2);  in bmac_rxdma_intr()
719 				skb_reserve(bp->rx_bufs[i], 2);  in bmac_rxdma_intr()
721 		bmac_construct_rxbuff(skb, &bp->rx_cmds[i]);  in bmac_rxdma_intr()
722 		cp->res_count = cpu_to_le16(0);  in bmac_rxdma_intr()
723 		cp->xfer_status = cpu_to_le16(0);  in bmac_rxdma_intr()
728 	if (last != -1) {  in bmac_rxdma_intr()
729 		bp->rx_fill = last;  in bmac_rxdma_intr()
730 		bp->rx_empty = i;  in bmac_rxdma_intr()
734 	spin_unlock_irqrestore(&bp->lock, flags);  in bmac_rxdma_intr()
752 	spin_lock_irqsave(&bp->lock, flags);  in bmac_txdma_intr()
758 	/*     del_timer(&bp->tx_timeout); */  in bmac_txdma_intr()
759 	/*     bp->timeout_active = 0; */  in bmac_txdma_intr()
762 		cp = &bp->tx_cmds[bp->tx_empty];  in bmac_txdma_intr()
763 		stat = le16_to_cpu(cp->xfer_status);  in bmac_txdma_intr()
771 			if (cp == bus_to_virt(in_le32(&bp->tx_dma->cmdptr)))  in bmac_txdma_intr()
775 		if (bp->tx_bufs[bp->tx_empty]) {  in bmac_txdma_intr()
776 			++dev->stats.tx_packets;  in bmac_txdma_intr()
777 			dev_consume_skb_irq(bp->tx_bufs[bp->tx_empty]);  in bmac_txdma_intr()
779 		bp->tx_bufs[bp->tx_empty] = NULL;  in bmac_txdma_intr()
780 		bp->tx_fullup = 0;  in bmac_txdma_intr()
782 		if (++bp->tx_empty >= N_TX_RING)  in bmac_txdma_intr()
783 			bp->tx_empty = 0;  in bmac_txdma_intr()
784 		if (bp->tx_empty == bp->tx_fill)  in bmac_txdma_intr()
788 	spin_unlock_irqrestore(&bp->lock, flags);  in bmac_txdma_intr()
791 		XXDEBUG(("bmac_txdma_intr done->bmac_start\n"));  in bmac_txdma_intr()
799 /* Real fast bit-reversal algorithm, 6-bit values */
820 	/* Compute bit-by-bit */  in crc416()
845 	newcrc = crc416(0xffffffff, *address);	/* address bits 47 - 32 */  in bmac_crc()
846 	newcrc = crc416(newcrc, address[1]);	/* address bits 31 - 16 */  in bmac_crc()
847 	newcrc = crc416(newcrc, address[2]);	/* address bits 15 - 0  */  in bmac_crc()
864 	crc = bmac_crc((unsigned short *)addr) & 0x3f; /* Big-endian alert! */  in bmac_addhash()
865 	crc = reverse6[crc];	/* Hyperfast bit-reversing algorithm */  in bmac_addhash()
866 	if (bp->hash_use_count[crc]++) return; /* This bit is already set */  in bmac_addhash()
869 	bp->hash_use_count[crc/16] |= mask;  in bmac_addhash()
879 	crc = bmac_crc((unsigned short *)addr) & 0x3f; /* Big-endian alert! */  in bmac_removehash()
880 	crc = reverse6[crc];	/* Hyperfast bit-reversing algorithm */  in bmac_removehash()
881 	if (bp->hash_use_count[crc] == 0) return; /* That bit wasn't in use! */  in bmac_removehash()
882 	if (--bp->hash_use_count[crc]) return; /* That bit is still in use */  in bmac_removehash()
885 	bp->hash_table_mask[crc/16] &= mask;  in bmac_removehash()
927 	bmwrite(dev, BHASH3, bp->hash_table_mask[0]); /* bits 15 - 0 */  in bmac_update_hash_table_mask()
928 	bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */  in bmac_update_hash_table_mask()
929 	bmwrite(dev, BHASH1, bp->hash_table_mask[2]); /* bits 47 - 32 */  in bmac_update_hash_table_mask()
930 	bmwrite(dev, BHASH0, bp->hash_table_mask[3]); /* bits 63 - 48 */  in bmac_update_hash_table_mask()
942 	bmac_rx_on(dev, 1, (dev->flags & IFF_PROMISC)? 1 : 0);
953 	bmac_rx_on(dev, 1, (dev->flags & IFF_PROMISC)? 1 : 0);
958     num_addrs == -1	Promiscuous mode, receive all packets
959     num_addrs == 0	Normal mode, clear multicast list
960     num_addrs > 0	Multicast mode, receive normal and MC packets, and do
961 			best-effort filtering.
971 	if (bp->sleeping)  in bmac_set_multicast()
976 	if((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {  in bmac_set_multicast()
977 		for (i=0; i<4; i++) bp->hash_table_mask[i] = 0xffff;  in bmac_set_multicast()
981 	} else if ((dev->flags & IFF_PROMISC) || (num_addrs < 0)) {  in bmac_set_multicast()
986 		XXDEBUG(("bmac: promisc mode enabled, rx_cfg=%#08x\n", rx_cfg));  in bmac_set_multicast()
988 		for (i=0; i<4; i++) bp->hash_table_mask[i] = 0;  in bmac_set_multicast()
989 		for (i=0; i<64; i++) bp->hash_use_count[i] = 0;  in bmac_set_multicast()
995 				bmac_addhash(bp, ha->addr);  in bmac_set_multicast()
1013 	if((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {  in bmac_set_multicast()
1018 	} else if(dev->flags & IFF_PROMISC) {  in bmac_set_multicast()
1030 			crc = ether_crc_le(6, ha->addr);  in bmac_set_multicast()
1053 	/*   if (status & FrameReceived) dev->stats.rx_dropped++; */  in bmac_misc_intr()
1054 	if (status & RxErrorMask) dev->stats.rx_errors++;  in bmac_misc_intr()
1055 	if (status & RxCRCCntExp) dev->stats.rx_crc_errors++;  in bmac_misc_intr()
1056 	if (status & RxLenCntExp) dev->stats.rx_length_errors++;  in bmac_misc_intr()
1057 	if (status & RxOverFlow) dev->stats.rx_over_errors++;  in bmac_misc_intr()
1058 	if (status & RxAlignCntExp) dev->stats.rx_frame_errors++;  in bmac_misc_intr()
1060 	/*   if (status & FrameSent) dev->stats.tx_dropped++; */  in bmac_misc_intr()
1061 	if (status & TxErrorMask) dev->stats.tx_errors++;  in bmac_misc_intr()
1062 	if (status & TxUnderrun) dev->stats.tx_fifo_errors++;  in bmac_misc_intr()
1063 	if (status & TxNormalCollExp) dev->stats.collisions++;  in bmac_misc_intr()
1079 #define SROMReadCount		3	/* number of words to read from SROM */
1141 		val = addr >> (addr_len-i-1);  in read_srom()
1145 	/* Now read in the 16-bit data */  in read_srom()
1197 	spin_lock_irqsave(&bp->lock, flags);  in bmac_reset_and_enable()
1204 	bp->sleeping = 0;  in bmac_reset_and_enable()
1213 		memcpy(data, dev->dev_addr, ETH_ALEN);  in bmac_reset_and_enable()
1214 		memcpy(data + ETH_ALEN, dev->dev_addr, ETH_ALEN);  in bmac_reset_and_enable()
1217 	spin_unlock_irqrestore(&bp->lock, flags);  in bmac_reset_and_enable()
1241 	int is_bmac_plus = ((int)match->data) != 0;  in bmac_probe()
1245 		return -ENODEV;  in bmac_probe()
1248 			"mac-address", NULL);  in bmac_probe()
1251 				"local-mac-address", NULL);  in bmac_probe()
1253 			printk(KERN_ERR "BMAC: Can't get mac-address\n");  in bmac_probe()
1254 			return -ENODEV;  in bmac_probe()
1261 		return -ENOMEM;  in bmac_probe()
1264 	SET_NETDEV_DEV(dev, &mdev->ofdev.dev);  in bmac_probe()
1267 	bp->mdev = mdev;  in bmac_probe()
1268 	spin_lock_init(&bp->lock);  in bmac_probe()
1275 	dev->base_addr = (unsigned long)  in bmac_probe()
1277 	if (dev->base_addr == 0)  in bmac_probe()
1280 	dev->irq = macio_irq(mdev, 0);  in bmac_probe()
1295 	dev->netdev_ops = &bmac_netdev_ops;  in bmac_probe()
1296 	dev->ethtool_ops = &bmac_ethtool_ops;  in bmac_probe()
1302 	bp->is_bmac_plus = is_bmac_plus;  in bmac_probe()
1303 	bp->tx_dma = ioremap(macio_resource_start(mdev, 1), macio_resource_len(mdev, 1));  in bmac_probe()
1304 	if (!bp->tx_dma)  in bmac_probe()
1306 	bp->tx_dma_intr = macio_irq(mdev, 1);  in bmac_probe()
1307 	bp->rx_dma = ioremap(macio_resource_start(mdev, 2), macio_resource_len(mdev, 2));  in bmac_probe()
1308 	if (!bp->rx_dma)  in bmac_probe()
1310 	bp->rx_dma_intr = macio_irq(mdev, 2);  in bmac_probe()
1312 	bp->tx_cmds = (volatile struct dbdma_cmd *) DBDMA_ALIGN(bp + 1);  in bmac_probe()
1313 	bp->rx_cmds = bp->tx_cmds + N_TX_RING + 1;  in bmac_probe()
1315 	bp->queue = (struct sk_buff_head *)(bp->rx_cmds + N_RX_RING + 1);  in bmac_probe()
1316 	skb_queue_head_init(bp->queue);  in bmac_probe()
1318 	timer_setup(&bp->tx_timeout, bmac_tx_timeout, 0);  in bmac_probe()
1320 	ret = request_irq(dev->irq, bmac_misc_intr, 0, "BMAC-misc", dev);  in bmac_probe()
1322 		printk(KERN_ERR "BMAC: can't get irq %d\n", dev->irq);  in bmac_probe()
1325 	ret = request_irq(bp->tx_dma_intr, bmac_txdma_intr, 0, "BMAC-txdma", dev);  in bmac_probe()
1327 		printk(KERN_ERR "BMAC: can't get irq %d\n", bp->tx_dma_intr);  in bmac_probe()
1330 	ret = request_irq(bp->rx_dma_intr, bmac_rxdma_intr, 0, "BMAC-rxdma", dev);  in bmac_probe()
1332 		printk(KERN_ERR "BMAC: can't get irq %d\n", bp->rx_dma_intr);  in bmac_probe()
1337 	 * re-enabled on open()  in bmac_probe()
1339 	disable_irq(dev->irq);  in bmac_probe()
1340 	pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);  in bmac_probe()
1348 	       dev->name, (is_bmac_plus ? "+" : ""), dev->dev_addr);  in bmac_probe()
1349 	XXDEBUG((", base_addr=%#0lx", dev->base_addr));  in bmac_probe()
1355 	free_irq(bp->rx_dma_intr, dev);  in bmac_probe()
1357 	free_irq(bp->tx_dma_intr, dev);  in bmac_probe()
1359 	free_irq(dev->irq, dev);  in bmac_probe()
1361 	iounmap(bp->rx_dma);  in bmac_probe()
1363 	iounmap(bp->tx_dma);  in bmac_probe()
1365 	iounmap((void __iomem *)dev->base_addr);  in bmac_probe()
1369 	pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);  in bmac_probe()
1372 	return -ENODEV;  in bmac_probe()
1380 	bp->opened = 1;  in bmac_open()
1382 	enable_irq(dev->irq);  in bmac_open()
1389 	volatile struct dbdma_regs __iomem *rd = bp->rx_dma;  in bmac_close()
1390 	volatile struct dbdma_regs __iomem *td = bp->tx_dma;  in bmac_close()
1394 	bp->sleeping = 1;  in bmac_close()
1406 	rd->control = cpu_to_le32(DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE));	/* clear run bit */  in bmac_close()
1407 	td->control = cpu_to_le32(DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE));	/* clear run bit */  in bmac_close()
1412 		if (bp->rx_bufs[i] != NULL) {  in bmac_close()
1413 			dev_kfree_skb(bp->rx_bufs[i]);  in bmac_close()
1414 			bp->rx_bufs[i] = NULL;  in bmac_close()
1419 		if (bp->tx_bufs[i] != NULL) {  in bmac_close()
1420 			dev_kfree_skb(bp->tx_bufs[i]);  in bmac_close()
1421 			bp->tx_bufs[i] = NULL;  in bmac_close()
1426 	bp->opened = 0;  in bmac_close()
1427 	disable_irq(dev->irq);  in bmac_close()
1428 	pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0);  in bmac_close()
1441 	if (bp->sleeping)  in bmac_start()
1444 	spin_lock_irqsave(&bp->lock, flags);  in bmac_start()
1446 		i = bp->tx_fill + 1;  in bmac_start()
1449 		if (i == bp->tx_empty)  in bmac_start()
1451 		skb = skb_dequeue(bp->queue);  in bmac_start()
1456 	spin_unlock_irqrestore(&bp->lock, flags);  in bmac_start()
1463 	skb_queue_tail(bp->queue, skb);  in bmac_output()
1471 	struct net_device *dev = macio_get_drvdata(bp->mdev);  in bmac_tx_timeout()
1472 	volatile struct dbdma_regs __iomem *td = bp->tx_dma;  in bmac_tx_timeout()
1473 	volatile struct dbdma_regs __iomem *rd = bp->rx_dma;  in bmac_tx_timeout()
1480 	spin_lock_irqsave(&bp->lock, flags);  in bmac_tx_timeout()
1481 	bp->timeout_active = 0;  in bmac_tx_timeout()
1486 	cp = &bp->tx_cmds[bp->tx_empty];  in bmac_tx_timeout()
1488 /* 	   le32_to_cpu(td->status), le16_to_cpu(cp->xfer_status), bp->tx_bad_runt, */  in bmac_tx_timeout()
1489 /* 	   mb->pr, mb->xmtfs, mb->fifofc)); */  in bmac_tx_timeout()
1496 	out_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE|ACTIVE|DEAD));  in bmac_tx_timeout()
1497 	printk(KERN_ERR "bmac: transmit timeout - resetting\n");  in bmac_tx_timeout()
1501 	cp = bus_to_virt(le32_to_cpu(rd->cmdptr));  in bmac_tx_timeout()
1502 	out_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE|ACTIVE|DEAD));  in bmac_tx_timeout()
1503 	out_le16(&cp->xfer_status, 0);  in bmac_tx_timeout()
1504 	out_le32(&rd->cmdptr, virt_to_bus(cp));  in bmac_tx_timeout()
1505 	out_le32(&rd->control, DBDMA_SET(RUN|WAKE));  in bmac_tx_timeout()
1509 		 bp->tx_empty, bp->tx_fill, bp->tx_fullup));  in bmac_tx_timeout()
1510 	i = bp->tx_empty;  in bmac_tx_timeout()
1511 	++dev->stats.tx_errors;  in bmac_tx_timeout()
1512 	if (i != bp->tx_fill) {  in bmac_tx_timeout()
1513 		dev_kfree_skb_irq(bp->tx_bufs[i]);  in bmac_tx_timeout()
1514 		bp->tx_bufs[i] = NULL;  in bmac_tx_timeout()
1516 		bp->tx_empty = i;  in bmac_tx_timeout()
1518 	bp->tx_fullup = 0;  in bmac_tx_timeout()
1520 	if (i != bp->tx_fill) {  in bmac_tx_timeout()
1521 		cp = &bp->tx_cmds[i];  in bmac_tx_timeout()
1522 		out_le16(&cp->xfer_status, 0);  in bmac_tx_timeout()
1523 		out_le16(&cp->command, OUTPUT_LAST);  in bmac_tx_timeout()
1524 		out_le32(&td->cmdptr, virt_to_bus(cp));  in bmac_tx_timeout()
1525 		out_le32(&td->control, DBDMA_SET(RUN));  in bmac_tx_timeout()
1536 	spin_unlock_irqrestore(&bp->lock, flags);  in bmac_tx_timeout()
1567 		return -ENOSYS;
1585 	*start = buffer + (offset - begin);
1586 	len -= (offset - begin);
1601 	free_irq(dev->irq, dev);  in bmac_remove()
1602 	free_irq(bp->tx_dma_intr, dev);  in bmac_remove()
1603 	free_irq(bp->rx_dma_intr, dev);  in bmac_remove()
1605 	iounmap((void __iomem *)dev->base_addr);  in bmac_remove()
1606 	iounmap(bp->tx_dma);  in bmac_remove()
1607 	iounmap(bp->rx_dma);  in bmac_remove()
1652 			return -ENOMEM;  in bmac_init()