52 #define TX_BUFFS_AVAIL(sp) ((sp->tx_old <= sp->tx_new) ? \  argument
53 			    sp->tx_old + (SEEQ_TX_BUFFERS - 1) - sp->tx_new : \
54 			    sp->tx_old - sp->tx_new - 1)
56 #define VIRT_TO_DMA(sp, v) ((sp)->srings_dma +                                 \  argument
58 					       (unsigned long)((sp)->rx_desc)))
141 static inline void seeq_go(struct sgiseeq_private *sp,  in seeq_go()  argument
145 	sregs->rstat = sp->mode | RSTAT_GO_BITS;  in seeq_go()
151 	struct sgiseeq_private *sp = netdev_priv(dev);  in __sgiseeq_set_mac_address()  local
152 	struct sgiseeq_regs *sregs = sp->sregs;  in __sgiseeq_set_mac_address()
162 	struct sgiseeq_private *sp = netdev_priv(dev);  in sgiseeq_set_mac_address()  local
167 	spin_lock_irq(&sp->tx_lock);  in sgiseeq_set_mac_address()
169 	spin_unlock_irq(&sp->tx_lock);  in sgiseeq_set_mac_address()
180 	struct sgiseeq_private *sp = netdev_priv(dev);  in seeq_init_ring()  local
184 	sp->rx_new = sp->tx_new = 0;  in seeq_init_ring()
185 	sp->rx_old = sp->tx_old = 0;  in seeq_init_ring()
191 		sp->tx_desc[i].tdma.cntinfo = TCNTINFO_INIT;  in seeq_init_ring()
192 		dma_sync_desc_dev(dev, &sp->tx_desc[i]);  in seeq_init_ring()
197 		if (!sp->rx_desc[i].skb) {  in seeq_init_ring()
207 			sp->rx_desc[i].skb = skb;  in seeq_init_ring()
208 			sp->rx_desc[i].rdma.pbuf = dma_addr;  in seeq_init_ring()
210 		sp->rx_desc[i].rdma.cntinfo = RCNTINFO_INIT;  in seeq_init_ring()
211 		dma_sync_desc_dev(dev, &sp->rx_desc[i]);  in seeq_init_ring()
213 	sp->rx_desc[i - 1].rdma.cntinfo |= HPCDMA_EOR;  in seeq_init_ring()
214 	dma_sync_desc_dev(dev, &sp->rx_desc[i - 1]);  in seeq_init_ring()
220 	struct sgiseeq_private *sp = netdev_priv(dev);  in seeq_purge_ring()  local
225 		if (sp->tx_desc[i].skb) {  in seeq_purge_ring()
226 			dev_kfree_skb(sp->tx_desc[i].skb);  in seeq_purge_ring()
227 			sp->tx_desc[i].skb = NULL;  in seeq_purge_ring()
233 		if (sp->rx_desc[i].skb) {  in seeq_purge_ring()
234 			dev_kfree_skb(sp->rx_desc[i].skb);  in seeq_purge_ring()
235 			sp->rx_desc[i].skb = NULL;  in seeq_purge_ring()
286 static int init_seeq(struct net_device *dev, struct sgiseeq_private *sp,  in init_seeq()  argument
289 	struct hpc3_ethregs *hregs = sp->hregs;  in init_seeq()
298 	if (sp->is_edlc) {  in init_seeq()
300 		sregs->rw.wregs.control = sp->control;  in init_seeq()
306 	hregs->rx_ndptr = VIRT_TO_DMA(sp, sp->rx_desc);  in init_seeq()
307 	hregs->tx_ndptr = VIRT_TO_DMA(sp, sp->tx_desc);  in init_seeq()
309 	seeq_go(sp, hregs, sregs);  in init_seeq()
326 static inline void rx_maybe_restart(struct sgiseeq_private *sp,  in rx_maybe_restart()  argument
331 		hregs->rx_ndptr = VIRT_TO_DMA(sp, sp->rx_desc + sp->rx_new);  in rx_maybe_restart()
332 		seeq_go(sp, hregs, sregs);  in rx_maybe_restart()
336 static inline void sgiseeq_rx(struct net_device *dev, struct sgiseeq_private *sp,  in sgiseeq_rx()  argument
345 	unsigned int orig_end = PREV_RX(sp->rx_new);  in sgiseeq_rx()
348 	rd = &sp->rx_desc[sp->rx_new];  in sgiseeq_rx()
400 		sp->rx_new = NEXT_RX(sp->rx_new);  in sgiseeq_rx()
402 		rd = &sp->rx_desc[sp->rx_new];  in sgiseeq_rx()
405 	dma_sync_desc_cpu(dev, &sp->rx_desc[orig_end]);  in sgiseeq_rx()
406 	sp->rx_desc[orig_end].rdma.cntinfo &= ~(HPCDMA_EOR);  in sgiseeq_rx()
407 	dma_sync_desc_dev(dev, &sp->rx_desc[orig_end]);  in sgiseeq_rx()
408 	dma_sync_desc_cpu(dev, &sp->rx_desc[PREV_RX(sp->rx_new)]);  in sgiseeq_rx()
409 	sp->rx_desc[PREV_RX(sp->rx_new)].rdma.cntinfo |= HPCDMA_EOR;  in sgiseeq_rx()
410 	dma_sync_desc_dev(dev, &sp->rx_desc[PREV_RX(sp->rx_new)]);  in sgiseeq_rx()
411 	rx_maybe_restart(sp, hregs, sregs);  in sgiseeq_rx()
414 static inline void tx_maybe_reset_collisions(struct sgiseeq_private *sp,  in tx_maybe_reset_collisions()  argument
417 	if (sp->is_edlc) {  in tx_maybe_reset_collisions()
418 		sregs->rw.wregs.control = sp->control & ~(SEEQ_CTRL_XCNT);  in tx_maybe_reset_collisions()
419 		sregs->rw.wregs.control = sp->control;  in tx_maybe_reset_collisions()
424 			   struct sgiseeq_private *sp,  in kick_tx()  argument
428 	int i = sp->tx_old;  in kick_tx()
436 	td = &sp->tx_desc[i];  in kick_tx()
441 		td = &sp->tx_desc[i];  in kick_tx()
445 		hregs->tx_ndptr = VIRT_TO_DMA(sp, td);  in kick_tx()
450 static inline void sgiseeq_tx(struct net_device *dev, struct sgiseeq_private *sp,  in sgiseeq_tx()  argument
458 	tx_maybe_reset_collisions(sp, sregs);  in sgiseeq_tx()
471 	for (j = sp->tx_old; j != sp->tx_new; j = NEXT_TX(j)) {  in sgiseeq_tx()
472 		td = &sp->tx_desc[j];  in sgiseeq_tx()
479 				hregs->tx_ndptr = VIRT_TO_DMA(sp, td);  in sgiseeq_tx()
485 		sp->tx_old = NEXT_TX(sp->tx_old);  in sgiseeq_tx()
499 	struct sgiseeq_private *sp = netdev_priv(dev);  in sgiseeq_interrupt()  local
500 	struct hpc3_ethregs *hregs = sp->hregs;  in sgiseeq_interrupt()
501 	struct sgiseeq_regs *sregs = sp->sregs;  in sgiseeq_interrupt()
503 	spin_lock(&sp->tx_lock);  in sgiseeq_interrupt()
509 	sgiseeq_rx(dev, sp, hregs, sregs);  in sgiseeq_interrupt()
512 	if (sp->tx_old != sp->tx_new)  in sgiseeq_interrupt()
513 		sgiseeq_tx(dev, sp, hregs, sregs);  in sgiseeq_interrupt()
515 	if ((TX_BUFFS_AVAIL(sp) > 0) && netif_queue_stopped(dev)) {  in sgiseeq_interrupt()
518 	spin_unlock(&sp->tx_lock);  in sgiseeq_interrupt()
525 	struct sgiseeq_private *sp = netdev_priv(dev);  in sgiseeq_open()  local
526 	struct sgiseeq_regs *sregs = sp->sregs;  in sgiseeq_open()
535 	err = init_seeq(dev, sp, sregs);  in sgiseeq_open()
551 	struct sgiseeq_private *sp = netdev_priv(dev);  in sgiseeq_close()  local
552 	struct sgiseeq_regs *sregs = sp->sregs;  in sgiseeq_close()
558 	reset_hpc3_and_seeq(sp->hregs, sregs);  in sgiseeq_close()
567 	struct sgiseeq_private *sp = netdev_priv(dev);  in sgiseeq_reset()  local
568 	struct sgiseeq_regs *sregs = sp->sregs;  in sgiseeq_reset()
571 	err = init_seeq(dev, sp, sregs);  in sgiseeq_reset()
583 	struct sgiseeq_private *sp = netdev_priv(dev);  in sgiseeq_start_xmit()  local
584 	struct hpc3_ethregs *hregs = sp->hregs;  in sgiseeq_start_xmit()
589 	spin_lock_irqsave(&sp->tx_lock, flags);  in sgiseeq_start_xmit()
595 			spin_unlock_irqrestore(&sp->tx_lock, flags);  in sgiseeq_start_xmit()
602 	entry = sp->tx_new;  in sgiseeq_start_xmit()
603 	td = &sp->tx_desc[entry];  in sgiseeq_start_xmit()
625 	if (sp->tx_old != sp->tx_new) {  in sgiseeq_start_xmit()
628 		backend = &sp->tx_desc[PREV_TX(sp->tx_new)];  in sgiseeq_start_xmit()
633 	sp->tx_new = NEXT_TX(sp->tx_new); /* Advance. */  in sgiseeq_start_xmit()
637 		kick_tx(dev, sp, hregs);  in sgiseeq_start_xmit()
639 	if (!TX_BUFFS_AVAIL(sp))  in sgiseeq_start_xmit()
641 	spin_unlock_irqrestore(&sp->tx_lock, flags);  in sgiseeq_start_xmit()
657 	struct sgiseeq_private *sp = netdev_priv(dev);  in sgiseeq_set_multicast()  local
658 	unsigned char oldmode = sp->mode;  in sgiseeq_set_multicast()
661 		sp->mode = SEEQ_RCMD_RANY;  in sgiseeq_set_multicast()
663 		sp->mode = SEEQ_RCMD_RBMCAST;  in sgiseeq_set_multicast()
665 		sp->mode = SEEQ_RCMD_RBCAST;  in sgiseeq_set_multicast()
671 	if (oldmode != sp->mode)  in sgiseeq_set_multicast()
679 	struct sgiseeq_private *sp = netdev_priv(dev);  in setup_tx_ring()  local
683 		buf[i].tdma.pnext = VIRT_TO_DMA(sp, buf + i + 1);  in setup_tx_ring()
688 	buf[i].tdma.pnext = VIRT_TO_DMA(sp, buf);  in setup_tx_ring()
696 	struct sgiseeq_private *sp = netdev_priv(dev);  in setup_rx_ring()  local
700 		buf[i].rdma.pnext = VIRT_TO_DMA(sp, buf + i + 1);  in setup_rx_ring()
706 	buf[i].rdma.pnext = VIRT_TO_DMA(sp, buf);  in setup_rx_ring()
727 	struct sgiseeq_private *sp;  in sgiseeq_probe()  local
738 	sp = netdev_priv(dev);  in sgiseeq_probe()
741 	sr = dma_alloc_noncoherent(&pdev->dev, sizeof(*sp->srings),  in sgiseeq_probe()
742 				&sp->srings_dma, GFP_KERNEL);  in sgiseeq_probe()
748 	sp->srings = sr;  in sgiseeq_probe()
749 	sp->rx_desc = sp->srings->rxvector;  in sgiseeq_probe()
750 	sp->tx_desc = sp->srings->txvector;  in sgiseeq_probe()
751 	spin_lock_init(&sp->tx_lock);  in sgiseeq_probe()
754 	setup_rx_ring(dev, sp->rx_desc, SEEQ_RX_BUFFERS);  in sgiseeq_probe()
755 	setup_tx_ring(dev, sp->tx_desc, SEEQ_TX_BUFFERS);  in sgiseeq_probe()
760 	gpriv = sp;  in sgiseeq_probe()
763 	sp->sregs = (struct sgiseeq_regs *) &hpcregs->eth_ext[0];  in sgiseeq_probe()
764 	sp->hregs = &hpcregs->ethregs;  in sgiseeq_probe()
765 	sp->name = sgiseeqstr;  in sgiseeq_probe()
766 	sp->mode = SEEQ_RCMD_RBCAST;  in sgiseeq_probe()
769 	sp->hregs->pconfig = 0x161;  in sgiseeq_probe()
770 	sp->hregs->dconfig = HPC3_EDCFG_FIRQ | HPC3_EDCFG_FEOP |  in sgiseeq_probe()
774 	sp->hregs->pconfig = 0x161;  in sgiseeq_probe()
775 	sp->hregs->dconfig = HPC3_EDCFG_FIRQ | HPC3_EDCFG_FEOP |  in sgiseeq_probe()
779 	hpc3_eth_reset(sp->hregs);  in sgiseeq_probe()
781 	sp->is_edlc = !(sp->sregs->rw.rregs.collision_tx[0] & 0xff);  in sgiseeq_probe()
782 	if (sp->is_edlc)  in sgiseeq_probe()
783 		sp->control = SEEQ_CTRL_XCNT | SEEQ_CTRL_ACCNT |  in sgiseeq_probe()
803 	free_page((unsigned long) sp->srings);  in sgiseeq_probe()
814 	struct sgiseeq_private *sp = netdev_priv(dev);  in sgiseeq_remove()  local
817 	dma_free_noncoherent(&pdev->dev, sizeof(*sp->srings), sp->srings,  in sgiseeq_remove()
818 			     sp->srings_dma);  in sgiseeq_remove()