119 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
215 static int sis900_open(struct net_device *net_dev);
216 static int sis900_mii_probe (struct net_device * net_dev);
217 static void sis900_init_rxfilter (struct net_device * net_dev);
219 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
220 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
222 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
223 static void sis900_tx_timeout(struct net_device *net_dev);
224 static void sis900_init_tx_ring(struct net_device *net_dev);
225 static void sis900_init_rx_ring(struct net_device *net_dev);
227 				     struct net_device *net_dev);
228 static int sis900_rx(struct net_device *net_dev);
229 static void sis900_finish_xmit (struct net_device *net_dev);
231 static int sis900_close(struct net_device *net_dev);
232 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
234 static void set_rx_mode(struct net_device *net_dev);
235 static void sis900_reset(struct net_device *net_dev);
236 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
238 static u16 sis900_default_phy(struct net_device * net_dev);
239 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
240 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
241 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
255 			       struct net_device *net_dev)  in sis900_get_mac_addr()  argument
257 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_get_mac_addr()
272 	        ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);  in sis900_get_mac_addr()
288 				struct net_device *net_dev)  in sis630e_get_mac_addr()  argument
307 		((u8 *)(net_dev->dev_addr))[i] = inb(0x71);  in sis630e_get_mac_addr()
328 			       struct net_device *net_dev)  in sis635_get_mac_addr()  argument
330 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis635_get_mac_addr()
346 		*( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr);  in sis635_get_mac_addr()
372 			       struct net_device *net_dev)  in sis96x_get_mac_addr()  argument
374 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis96x_get_mac_addr()
381 			u16 *mac = (u16 *)net_dev->dev_addr;  in sis96x_get_mac_addr()
428 	struct net_device *net_dev;  in sis900_probe()  local
457 	net_dev = alloc_etherdev(sizeof(struct sis900_private));  in sis900_probe()
458 	if (!net_dev)  in sis900_probe()
460 	SET_NETDEV_DEV(net_dev, &pci_dev->dev);  in sis900_probe()
474 	sis_priv = netdev_priv(net_dev);  in sis900_probe()
479 	pci_set_drvdata(pci_dev, net_dev);  in sis900_probe()
498 	net_dev->netdev_ops = &sis900_netdev_ops;  in sis900_probe()
499 	net_dev->watchdog_timeo = TX_TIMEOUT;  in sis900_probe()
500 	net_dev->ethtool_ops = &sis900_ethtool_ops;  in sis900_probe()
507 	sis_priv->mii_info.dev = net_dev;  in sis900_probe()
522 		ret = sis630e_get_mac_addr(pci_dev, net_dev);  in sis900_probe()
524 		ret = sis635_get_mac_addr(pci_dev, net_dev);  in sis900_probe()
526 		ret = sis96x_get_mac_addr(pci_dev, net_dev);  in sis900_probe()
528 		ret = sis900_get_mac_addr(pci_dev, net_dev);  in sis900_probe()
530 	if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {  in sis900_probe()
531 		eth_hw_addr_random(net_dev);  in sis900_probe()
541 	if (sis900_mii_probe(net_dev) == 0) {  in sis900_probe()
555 	ret = register_netdev(net_dev);  in sis900_probe()
561 	       net_dev->name, card_name, ioaddr, pci_dev->irq,  in sis900_probe()
562 	       net_dev->dev_addr);  in sis900_probe()
567 		printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);  in sis900_probe()
582 	free_netdev(net_dev);  in sis900_probe()
595 static int sis900_mii_probe(struct net_device *net_dev)  in sis900_mii_probe()  argument
597 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_mii_probe()
613 			mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);  in sis900_mii_probe()
634 		mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);  in sis900_mii_probe()
635 		mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);  in sis900_mii_probe()
671 	sis900_default_phy( net_dev );  in sis900_mii_probe()
676         	status = sis900_reset_phy(net_dev, sis_priv->cur_phy);  in sis900_mii_probe()
681             	mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);  in sis900_mii_probe()
687 			poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);  in sis900_mii_probe()
698 		mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);  in sis900_mii_probe()
699 		mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);  in sis900_mii_probe()
700 		mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);  in sis900_mii_probe()
701 		mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);  in sis900_mii_probe()
706 		netif_carrier_on(net_dev);  in sis900_mii_probe()
708 		netif_carrier_off(net_dev);  in sis900_mii_probe()
722 static u16 sis900_default_phy(struct net_device * net_dev)  in sis900_default_phy()  argument
724 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_default_phy()
730 		status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);  in sis900_default_phy()
731 		status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);  in sis900_default_phy()
738 			status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);  in sis900_default_phy()
739 			mdio_write(net_dev, phy->phy_addr, MII_CONTROL,  in sis900_default_phy()
764 	status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);  in sis900_default_phy()
767 	mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);  in sis900_default_phy()
768 	status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);  in sis900_default_phy()
769 	status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);  in sis900_default_phy()
784 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)  in sis900_set_capability()  argument
789 	status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);  in sis900_set_capability()
790 	status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);  in sis900_set_capability()
798 	mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);  in sis900_set_capability()
893 static int mdio_read(struct net_device *net_dev, int phy_id, int location)  in mdio_read()  argument
896 	struct sis900_private *sp = netdev_priv(net_dev);  in mdio_read()
938 static void mdio_write(struct net_device *net_dev, int phy_id, int location,  in mdio_write()  argument
942 	struct sis900_private *sp = netdev_priv(net_dev);  in mdio_write()
992 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)  in sis900_reset_phy()  argument
998 		status = mdio_read(net_dev, phy_addr, MII_STATUS);  in sis900_reset_phy()
1000 	mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );  in sis900_reset_phy()
1031 sis900_open(struct net_device *net_dev)  in sis900_open()  argument
1033 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_open()
1038 	sis900_reset(net_dev);  in sis900_open()
1041 	sis630_set_eq(net_dev, sis_priv->chipset_rev);  in sis900_open()
1044 			  net_dev->name, net_dev);  in sis900_open()
1048 	sis900_init_rxfilter(net_dev);  in sis900_open()
1050 	sis900_init_tx_ring(net_dev);  in sis900_open()
1051 	sis900_init_rx_ring(net_dev);  in sis900_open()
1053 	set_rx_mode(net_dev);  in sis900_open()
1055 	netif_start_queue(net_dev);  in sis900_open()
1065 	sis900_check_mode(net_dev, sis_priv->mii);  in sis900_open()
1071 	sis_priv->timer.data = (unsigned long)net_dev;  in sis900_open()
1087 sis900_init_rxfilter (struct net_device * net_dev)  in sis900_init_rxfilter()  argument
1089 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_init_rxfilter()
1101 		u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i);  in sis900_init_rxfilter()
1108 			       net_dev->name, i, sr32(rfdr));  in sis900_init_rxfilter()
1124 sis900_init_tx_ring(struct net_device *net_dev)  in sis900_init_tx_ring()  argument
1126 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_init_tx_ring()
1146 		       net_dev->name, sr32(txdp));  in sis900_init_tx_ring()
1158 sis900_init_rx_ring(struct net_device *net_dev)  in sis900_init_rx_ring()  argument
1160 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_init_rx_ring()
1181 		if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {  in sis900_init_rx_ring()
1205 		       net_dev->name, sr32(rxdp));  in sis900_init_rx_ring()
1235 static void sis630_set_eq(struct net_device *net_dev, u8 revision)  in sis630_set_eq()  argument
1237 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis630_set_eq()
1245 	if (netif_carrier_ok(net_dev)) {  in sis630_set_eq()
1246 		reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);  in sis630_set_eq()
1247 		mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,  in sis630_set_eq()
1250 			eq_value = (0x00F8 & mdio_read(net_dev,  in sis630_set_eq()
1281 		reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);  in sis630_set_eq()
1284 		mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);  in sis630_set_eq()
1286 		reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);  in sis630_set_eq()
1290 			mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,  in sis630_set_eq()
1293 			mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,  in sis630_set_eq()
1308 	struct net_device *net_dev = (struct net_device *)data;  in sis900_timer()  local
1309 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_timer()
1315 	status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);  in sis900_timer()
1316 	status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);  in sis900_timer()
1319 	if (!netif_carrier_ok(net_dev)) {  in sis900_timer()
1322 		status = sis900_default_phy(net_dev);  in sis900_timer()
1328 			sis900_read_mode(net_dev, &speed, &duplex);  in sis900_timer()
1331 				sis630_set_eq(net_dev, sis_priv->chipset_rev);  in sis900_timer()
1332 				netif_carrier_on(net_dev);  in sis900_timer()
1338                 	netif_carrier_off(net_dev);  in sis900_timer()
1340                 		printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);  in sis900_timer()
1345                			sis900_reset_phy(net_dev,  sis_priv->cur_phy);  in sis900_timer()
1347 			sis630_set_eq(net_dev, sis_priv->chipset_rev);  in sis900_timer()
1369 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)  in sis900_check_mode()  argument
1371 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_check_mode()
1377 		sis900_set_capability(net_dev , mii_phy);  in sis900_check_mode()
1378 		sis900_auto_negotiate(net_dev, sis_priv->cur_phy);  in sis900_check_mode()
1449 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)  in sis900_auto_negotiate()  argument
1451 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_auto_negotiate()
1456 		status = mdio_read(net_dev, phy_addr, MII_STATUS);  in sis900_auto_negotiate()
1460 			printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);  in sis900_auto_negotiate()
1462 		netif_carrier_off(net_dev);  in sis900_auto_negotiate()
1467 	mdio_write(net_dev, phy_addr, MII_CONTROL,  in sis900_auto_negotiate()
1484 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)  in sis900_read_mode()  argument
1486 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_read_mode()
1494 		status = mdio_read(net_dev, phy_addr, MII_STATUS);  in sis900_read_mode()
1500 	autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);  in sis900_read_mode()
1501 	autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);  in sis900_read_mode()
1516 		if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)  in sis900_read_mode()
1518 		if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)  in sis900_read_mode()
1524 	       				net_dev->name,  in sis900_read_mode()
1539 static void sis900_tx_timeout(struct net_device *net_dev)  in sis900_tx_timeout()  argument
1541 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_tx_timeout()
1548 			net_dev->name, sr32(cr), sr32(isr));  in sis900_tx_timeout()
1570 			net_dev->stats.tx_dropped++;  in sis900_tx_timeout()
1574 	netif_wake_queue(net_dev);  in sis900_tx_timeout()
1578 	net_dev->trans_start = jiffies; /* prevent tx timeout */  in sis900_tx_timeout()
1598 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)  in sis900_start_xmit()  argument
1600 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_start_xmit()
1620 			net_dev->stats.tx_dropped++;  in sis900_start_xmit()
1637 		netif_stop_queue(net_dev);  in sis900_start_xmit()
1640 		netif_start_queue(net_dev);  in sis900_start_xmit()
1644 		netif_stop_queue(net_dev);  in sis900_start_xmit()
1652 		       net_dev->name, skb->data, (int)skb->len, entry);  in sis900_start_xmit()
1668 	struct net_device *net_dev = dev_instance;  in sis900_interrupt()  local
1669 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_interrupt()
1688 			sis900_rx(net_dev);  in sis900_interrupt()
1692 			sis900_finish_xmit(net_dev);  in sis900_interrupt()
1698 					"status %#8.8x.\n", net_dev->name, status);  in sis900_interrupt()
1705 					net_dev->name, status);  in sis900_interrupt()
1713 		       net_dev->name, sr32(isr));  in sis900_interrupt()
1729 static int sis900_rx(struct net_device *net_dev)  in sis900_rx()  argument
1731 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_rx()
1764 				       net_dev->name, rx_status, data_size);  in sis900_rx()
1765 			net_dev->stats.rx_errors++;  in sis900_rx()
1767 				net_dev->stats.rx_over_errors++;  in sis900_rx()
1769 				net_dev->stats.rx_length_errors++;  in sis900_rx()
1771 				net_dev->stats.rx_frame_errors++;  in sis900_rx()
1773 				net_dev->stats.rx_crc_errors++;  in sis900_rx()
1786 			if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {  in sis900_rx()
1794 				net_dev->stats.rx_dropped++;  in sis900_rx()
1806 					      net_dev->name, sis_priv->cur_rx,  in sis900_rx()
1815 			rx_skb->protocol = eth_type_trans(rx_skb, net_dev);  in sis900_rx()
1820 				net_dev->stats.multicast++;  in sis900_rx()
1821 			net_dev->stats.rx_bytes += rx_size;  in sis900_rx()
1822 			net_dev->stats.rx_packets++;  in sis900_rx()
1850 			skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE);  in sis900_rx()
1856 				net_dev->stats.rx_dropped++;  in sis900_rx()
1888 static void sis900_finish_xmit (struct net_device *net_dev)  in sis900_finish_xmit()  argument
1890 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_finish_xmit()
1912 				       net_dev->name, tx_status);  in sis900_finish_xmit()
1913 			net_dev->stats.tx_errors++;  in sis900_finish_xmit()
1915 				net_dev->stats.tx_fifo_errors++;  in sis900_finish_xmit()
1917 				net_dev->stats.tx_aborted_errors++;  in sis900_finish_xmit()
1919 				net_dev->stats.tx_carrier_errors++;  in sis900_finish_xmit()
1921 				net_dev->stats.tx_window_errors++;  in sis900_finish_xmit()
1924 			net_dev->stats.collisions += (tx_status & COLCNT) >> 16;  in sis900_finish_xmit()
1925 			net_dev->stats.tx_bytes += tx_status & DSIZE;  in sis900_finish_xmit()
1926 			net_dev->stats.tx_packets++;  in sis900_finish_xmit()
1939 	if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&  in sis900_finish_xmit()
1944 		netif_wake_queue (net_dev);  in sis900_finish_xmit()
1956 static int sis900_close(struct net_device *net_dev)  in sis900_close()  argument
1958 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_close()
1964 	netif_stop_queue(net_dev);  in sis900_close()
1975 	free_irq(pdev->irq, net_dev);  in sis900_close()
2010 static void sis900_get_drvinfo(struct net_device *net_dev,  in sis900_get_drvinfo()  argument
2013 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_get_drvinfo()
2021 static u32 sis900_get_msglevel(struct net_device *net_dev)  in sis900_get_msglevel()  argument
2023 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_get_msglevel()
2027 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)  in sis900_set_msglevel()  argument
2029 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_set_msglevel()
2033 static u32 sis900_get_link(struct net_device *net_dev)  in sis900_get_link()  argument
2035 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_get_link()
2039 static int sis900_get_settings(struct net_device *net_dev,  in sis900_get_settings()  argument
2042 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_get_settings()
2049 static int sis900_set_settings(struct net_device *net_dev,  in sis900_set_settings()  argument
2052 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_set_settings()
2060 static int sis900_nway_reset(struct net_device *net_dev)  in sis900_nway_reset()  argument
2062 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_nway_reset()
2077 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)  in sis900_set_wol()  argument
2079 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_set_wol()
2089 			printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);  in sis900_set_wol()
2108 		printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);  in sis900_set_wol()
2113 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)  in sis900_get_wol()  argument
2115 	struct sis900_private *sp = netdev_priv(net_dev);  in sis900_get_wol()
2149 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)  in mii_ioctl()  argument
2151 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in mii_ioctl()
2160 		data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);  in mii_ioctl()
2164 		mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);  in mii_ioctl()
2302 static void set_rx_mode(struct net_device *net_dev)  in set_rx_mode()  argument
2304 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in set_rx_mode()
2317 	if (net_dev->flags & IFF_PROMISC) {  in set_rx_mode()
2322 	} else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||  in set_rx_mode()
2323 		   (net_dev->flags & IFF_ALLMULTI)) {  in set_rx_mode()
2335 		netdev_for_each_mc_addr(ha, net_dev) {  in set_rx_mode()
2355 	if (net_dev->flags & IFF_LOOPBACK) {  in set_rx_mode()
2377 static void sis900_reset(struct net_device *net_dev)  in sis900_reset()  argument
2379 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_reset()
2410 	struct net_device *net_dev = pci_get_drvdata(pci_dev);  in sis900_remove()  local
2411 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_remove()
2413 	unregister_netdev(net_dev);  in sis900_remove()
2427 	free_netdev(net_dev);  in sis900_remove()
2435 	struct net_device *net_dev = pci_get_drvdata(pci_dev);  in sis900_suspend()  local
2436 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_suspend()
2439 	if(!netif_running(net_dev))  in sis900_suspend()
2442 	netif_stop_queue(net_dev);  in sis900_suspend()
2443 	netif_device_detach(net_dev);  in sis900_suspend()
2456 	struct net_device *net_dev = pci_get_drvdata(pci_dev);  in sis900_resume()  local
2457 	struct sis900_private *sis_priv = netdev_priv(net_dev);  in sis900_resume()
2460 	if(!netif_running(net_dev))  in sis900_resume()
2465 	sis900_init_rxfilter(net_dev);  in sis900_resume()
2467 	sis900_init_tx_ring(net_dev);  in sis900_resume()
2468 	sis900_init_rx_ring(net_dev);  in sis900_resume()
2470 	set_rx_mode(net_dev);  in sis900_resume()
2472 	netif_device_attach(net_dev);  in sis900_resume()
2473 	netif_start_queue(net_dev);  in sis900_resume()
2483 	sis900_check_mode(net_dev, sis_priv->mii);  in sis900_resume()