Merge bk://kernel.bkbits.net/davem/tg3-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

drivers/net/tg3.c

 /*
  * tg3.c: Broadcom Tigon3 ethernet driver.
  *
- * Copyright (C) 2001, 2002, 2003 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2001, 2002, 2003, 2004 David S. Miller (davem@redhat.com)
  * Copyright (C) 2001, 2002, 2003 Jeff Garzik (jgarzik@pobox.com)
+ * Copyright (C) 2004 Sun Microsystems Inc.
  */
 
 #include <linux/config.h>
@@ -56,8 +57,8 @@
 
 #define DRV_MODULE_NAME		"tg3"
 #define PFX DRV_MODULE_NAME	": "
-#define DRV_MODULE_VERSION	"3.6"
-#define DRV_MODULE_RELDATE	"June 12, 2004"
+#define DRV_MODULE_VERSION	"3.7"
+#define DRV_MODULE_RELDATE	"July 2, 2004"
 
 #define TG3_DEF_MAC_MODE	0
 #define TG3_DEF_RX_MODE		0
@@ -1961,6 +1962,67 @@ static int tg3_fiber_aneg_smachine(struct tg3 *tp,
 	return ret;
 }
 
+static int fiber_autoneg(struct tg3 *tp, u32 *flags)
+{
+	int res = 0;
+
+	if (tp->tg3_flags2 & TG3_FLG2_HW_AUTONEG) {
+		u32 dig_status;
+
+		dig_status = tr32(SG_DIG_STATUS);
+		*flags = 0;
+		if (dig_status & SG_DIG_PARTNER_ASYM_PAUSE)
+			*flags |= MR_LP_ADV_ASYM_PAUSE;
+		if (dig_status & SG_DIG_PARTNER_PAUSE_CAPABLE)
+			*flags |= MR_LP_ADV_SYM_PAUSE;
+
+		if ((dig_status & SG_DIG_AUTONEG_COMPLETE) &&
+		    !(dig_status & (SG_DIG_AUTONEG_ERROR |
+				    SG_DIG_PARTNER_FAULT_MASK)))
+			res = 1;
+	} else {
+		struct tg3_fiber_aneginfo aninfo;
+		int status = ANEG_FAILED;
+		unsigned int tick;
+		u32 tmp;
+
+		tw32_f(MAC_TX_AUTO_NEG, 0);
+
+		tmp = tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK;
+		tw32_f(MAC_MODE, tmp | MAC_MODE_PORT_MODE_GMII);
+		udelay(40);
+
+		tw32_f(MAC_MODE, tp->mac_mode | MAC_MODE_SEND_CONFIGS);
+		udelay(40);
+
+		memset(&aninfo, 0, sizeof(aninfo));
+		aninfo.flags |= MR_AN_ENABLE;
+		aninfo.state = ANEG_STATE_UNKNOWN;
+		aninfo.cur_time = 0;
+		tick = 0;
+		while (++tick < 195000) {
+			status = tg3_fiber_aneg_smachine(tp, &aninfo);
+			if (status == ANEG_DONE || status == ANEG_FAILED)
+				break;
+
+			udelay(1);
+		}
+
+		tp->mac_mode &= ~MAC_MODE_SEND_CONFIGS;
+		tw32_f(MAC_MODE, tp->mac_mode);
+		udelay(40);
+
+		*flags = aninfo.flags;
+
+		if (status == ANEG_DONE &&
+		    (aninfo.flags & (MR_AN_COMPLETE | MR_LINK_OK |
+				     MR_LP_ADV_FULL_DUPLEX)))
+			res = 1;
+	}
+
+	return res;
+}
+
 static int tg3_setup_fiber_phy(struct tg3 *tp, int force_reset)
 {
 	u32 orig_pause_cfg;
@@ -1980,6 +2042,20 @@ static int tg3_setup_fiber_phy(struct tg3 *tp, int force_reset)
 	tw32_f(MAC_MODE, tp->mac_mode);
 	udelay(40);
 
+	if (tp->tg3_flags2 & TG3_FLG2_HW_AUTONEG) {
+		/* Allow time for the hardware to auto-negotiate (195ms) */
+		unsigned int tick = 0;
+
+		while (++tick < 195000) { 
+			if (tr32(SG_DIG_STATUS) & SG_DIG_AUTONEG_COMPLETE)
+				break;
+			udelay(1);
+		}
+		if (tick >= 195000)
+			printk(KERN_INFO PFX "%s: HW autoneg failed !\n",
+			    tp->dev->name);
+	}
+
 	/* Reset when initting first time or we have a link. */
 	if (!(tp->tg3_flags & TG3_FLAG_INIT_COMPLETE) ||
 	    (tr32(MAC_STATUS) & MAC_STATUS_PCS_SYNCED)) {
@@ -2032,52 +2108,17 @@ static int tg3_setup_fiber_phy(struct tg3 *tp, int force_reset)
 
 	current_link_up = 0;
  	if (tr32(MAC_STATUS) & MAC_STATUS_PCS_SYNCED) {
-		if (tp->link_config.autoneg == AUTONEG_ENABLE &&
-		    !(tp->tg3_flags & TG3_FLAG_GOT_SERDES_FLOWCTL)) {
-			struct tg3_fiber_aneginfo aninfo;
-			int status = ANEG_FAILED;
-			unsigned int tick;
-			u32 tmp;
-
-			memset(&aninfo, 0, sizeof(aninfo));
-			aninfo.flags |= (MR_AN_ENABLE);
-
-			tw32(MAC_TX_AUTO_NEG, 0);
-
-			tmp = tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK;
-			tw32_f(MAC_MODE, tmp | MAC_MODE_PORT_MODE_GMII);
-			udelay(40);
-
-			tw32_f(MAC_MODE, tp->mac_mode | MAC_MODE_SEND_CONFIGS);
-			udelay(40);
-
-			aninfo.state = ANEG_STATE_UNKNOWN;
-			aninfo.cur_time = 0;
-			tick = 0;
-			while (++tick < 195000) {
-				status = tg3_fiber_aneg_smachine(tp, &aninfo);
-				if (status == ANEG_DONE ||
-				    status == ANEG_FAILED)
-					break;
-
-				udelay(1);
-			}
-
-			tp->mac_mode &= ~MAC_MODE_SEND_CONFIGS;
-			tw32_f(MAC_MODE, tp->mac_mode);
-			udelay(40);
+		if (tp->link_config.autoneg == AUTONEG_ENABLE) {
+			u32 flags;
   
-			if (status == ANEG_DONE &&
-			    (aninfo.flags &
-			     (MR_AN_COMPLETE | MR_LINK_OK |
-			      MR_LP_ADV_FULL_DUPLEX))) {
+			if (fiber_autoneg(tp, &flags)) {
 				u32 local_adv, remote_adv;
 
 				local_adv = ADVERTISE_PAUSE_CAP;
 				remote_adv = 0;
-				if (aninfo.flags & MR_LP_ADV_SYM_PAUSE)
+				if (flags & MR_LP_ADV_SYM_PAUSE)
   					remote_adv |= LPA_PAUSE_CAP;
-				if (aninfo.flags & MR_LP_ADV_ASYM_PAUSE)
+				if (flags & MR_LP_ADV_ASYM_PAUSE)
 					remote_adv |= LPA_PAUSE_ASYM;
 
 				tg3_setup_flow_control(tp, local_adv, remote_adv);
@@ -2104,8 +2145,10 @@ static int tg3_setup_fiber_phy(struct tg3 *tp, int force_reset)
 		} else {
 			/* Forcing 1000FD link up. */
 			current_link_up = 1;
+			tp->tg3_flags |= TG3_FLAG_GOT_SERDES_FLOWCTL;
 		}
-	}
+	} else
+		tp->tg3_flags &= ~TG3_FLAG_GOT_SERDES_FLOWCTL;
 
 	tp->mac_mode &= ~MAC_MODE_LINK_POLARITY;
 	tw32_f(MAC_MODE, tp->mac_mode);
@@ -2811,11 +2854,10 @@ static inline int tg3_4g_overflow_test(dma_addr_t mapping, int len)
 	u32 base = (u32) mapping & 0xffffffff;
 
 	return ((base > 0xffffdcc0) &&
-		((u64) mapping >> 32) == 0 &&
 		(base + len + 8 < base));
 }
 
-static int tg3_start_xmit_4gbug(struct sk_buff *skb, struct net_device *dev)
+static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct tg3 *tp = netdev_priv(dev);
 	dma_addr_t mapping;
@@ -3019,165 +3061,6 @@ static int tg3_start_xmit_4gbug(struct sk_buff *skb, struct net_device *dev)
 	return 0;
 }
 
-static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct tg3 *tp = netdev_priv(dev);
-	dma_addr_t mapping;
-	u32 len, entry, base_flags, mss;
-	unsigned long flags;
-
-	len = skb_headlen(skb);
-
-	/* No BH disabling for tx_lock here.  We are running in BH disabled
-	 * context and TX reclaim runs via tp->poll inside of a software
-	 * interrupt.  Rejoice!
-	 *
-	 * Actually, things are not so simple.  If we are to take a hw
-	 * IRQ here, we can deadlock, consider:
-	 *
-	 *       CPU1		CPU2
-	 *   tg3_start_xmit
-	 *   take tp->tx_lock
-	 *			tg3_timer
-	 *			take tp->lock
-	 *   tg3_interrupt
-	 *   spin on tp->lock
-	 *			spin on tp->tx_lock
-	 *
-	 * So we really do need to disable interrupts when taking
-	 * tx_lock here.
-	 */
-	spin_lock_irqsave(&tp->tx_lock, flags);
-
-	/* This is a hard error, log it. */
-	if (unlikely(TX_BUFFS_AVAIL(tp) <= (skb_shinfo(skb)->nr_frags + 1))) {
-		netif_stop_queue(dev);
-		spin_unlock_irqrestore(&tp->tx_lock, flags);
-		printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
-		       dev->name);
-		return 1;
-	}
-
-	entry = tp->tx_prod;
-	base_flags = 0;
-	if (skb->ip_summed == CHECKSUM_HW)
-		base_flags |= TXD_FLAG_TCPUDP_CSUM;
-#if TG3_TSO_SUPPORT != 0
-	mss = 0;
-	if (skb->len > (tp->dev->mtu + ETH_HLEN) &&
-	    (mss = skb_shinfo(skb)->tso_size) != 0) {
-		int tcp_opt_len, ip_tcp_len;
-
-		tcp_opt_len = ((skb->h.th->doff - 5) * 4);
-		ip_tcp_len = (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
-
-		base_flags |= (TXD_FLAG_CPU_PRE_DMA |
-			       TXD_FLAG_CPU_POST_DMA);
-
-		skb->nh.iph->check = 0;
-		skb->nh.iph->tot_len = ntohs(mss + ip_tcp_len + tcp_opt_len);
-		skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
-						      skb->nh.iph->daddr,
-						      0, IPPROTO_TCP, 0);
-
-		if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) {
-			if (tcp_opt_len || skb->nh.iph->ihl > 5) {
-				int tsflags;
-
-				tsflags = ((skb->nh.iph->ihl - 5) +
-					   (tcp_opt_len >> 2));
-				mss |= (tsflags << 11);
-			}
-		} else {
-			if (tcp_opt_len || skb->nh.iph->ihl > 5) {
-				int tsflags;
-
-				tsflags = ((skb->nh.iph->ihl - 5) +
-					   (tcp_opt_len >> 2));
-				base_flags |= tsflags << 12;
-			}
-		}
-	}
-#else
-	mss = 0;
-#endif
-#if TG3_VLAN_TAG_USED
-	if (tp->vlgrp != NULL && vlan_tx_tag_present(skb))
-		base_flags |= (TXD_FLAG_VLAN |
-			       (vlan_tx_tag_get(skb) << 16));
-#endif
-
-	/* Queue skb data, a.k.a. the main skb fragment. */
-	mapping = pci_map_single(tp->pdev, skb->data, len, PCI_DMA_TODEVICE);
-
-	tp->tx_buffers[entry].skb = skb;
-	pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping);
-
-	tg3_set_txd(tp, entry, mapping, len, base_flags,
-		    (skb_shinfo(skb)->nr_frags == 0) | (mss << 1));
-
-	entry = NEXT_TX(entry);
-
-	/* Now loop through additional data fragments, and queue them. */
-	if (skb_shinfo(skb)->nr_frags > 0) {
-		unsigned int i, last;
-
-		last = skb_shinfo(skb)->nr_frags - 1;
-		for (i = 0; i <= last; i++) {
-			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
-
-			len = frag->size;
-			mapping = pci_map_page(tp->pdev,
-					       frag->page,
-					       frag->page_offset,
-					       len, PCI_DMA_TODEVICE);
-
-			tp->tx_buffers[entry].skb = NULL;
-			pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping);
-
-			if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750)
-				tg3_set_txd(tp, entry, mapping, len,
-					    base_flags, (i == last)|(mss << 1));
-			else
-				tg3_set_txd(tp, entry, mapping, len,
-					    base_flags, (i == last));
-
-			entry = NEXT_TX(entry);
-		}
-	}
-
-	/* Packets are ready, update Tx producer idx local and on card.
-	 * We know this is not a 5700 (by virtue of not being a chip
-	 * requiring the 4GB overflow workaround) so we can safely omit
-	 * the double-write bug tests.
-	 */
-	if (tp->tg3_flags & TG3_FLAG_HOST_TXDS) {
-		tw32_tx_mbox((MAILBOX_SNDHOST_PROD_IDX_0 +
-			      TG3_64BIT_REG_LOW), entry);
-	} else {
-		/* First, make sure tg3 sees last descriptor fully
-		 * in SRAM.
-		 */
-		if (tp->tg3_flags & TG3_FLAG_MBOX_WRITE_REORDER)
-			tr32(MAILBOX_SNDNIC_PROD_IDX_0 +
-			     TG3_64BIT_REG_LOW);
-
-		tw32_tx_mbox((MAILBOX_SNDNIC_PROD_IDX_0 +
-			      TG3_64BIT_REG_LOW), entry);
-	}
-
-	tp->tx_prod = entry;
-	if (TX_BUFFS_AVAIL(tp) <= (MAX_SKB_FRAGS + 1))
-		netif_stop_queue(dev);
-
-	spin_unlock_irqrestore(&tp->tx_lock, flags);
-
-	dev->trans_start = jiffies;
-
-	return 0;
-}
-
 static inline void tg3_set_mtu(struct net_device *dev, struct tg3 *tp,
 			       int new_mtu)
 {
@@ -5363,6 +5246,26 @@ static int tg3_reset_hw(struct tg3 *tp)
 	 */
 	tw32_f(MAC_LOW_WMARK_MAX_RX_FRAME, 2);
 
+	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 &&
+	    tp->phy_id == PHY_ID_SERDES) {
+		/* Enable hardware link auto-negotiation */
+		u32 digctrl, txctrl;
+
+		digctrl = SG_DIG_USING_HW_AUTONEG | SG_DIG_CRC16_CLEAR_N |
+		    SG_DIG_LOCAL_DUPLEX_STATUS | SG_DIG_LOCAL_LINK_STATUS |
+		    (2 << SG_DIG_SPEED_STATUS_SHIFT) | SG_DIG_FIBER_MODE |
+		    SG_DIG_GBIC_ENABLE;
+
+		txctrl = tr32(MAC_SERDES_CFG);
+		tw32_f(MAC_SERDES_CFG, txctrl | MAC_SERDES_CFG_EDGE_SELECT);
+		tw32_f(SG_DIG_CTRL, digctrl | SG_DIG_SOFT_RESET);
+		tr32(SG_DIG_CTRL);
+		udelay(5);
+		tw32_f(SG_DIG_CTRL, digctrl);
+
+		tp->tg3_flags2 |= TG3_FLG2_HW_AUTONEG;
+	}
+
 	err = tg3_setup_phy(tp, 1);
 	if (err)
 		return err;
@@ -6696,6 +6599,9 @@ static int tg3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	case SIOCGMIIREG: {
 		u32 mii_regval;
 
+		if (tp->phy_id == PHY_ID_SERDES)
+			break;			/* We have no PHY */
+
 		spin_lock_irq(&tp->lock);
 		err = tg3_readphy(tp, data->reg_num & 0x1f, &mii_regval);
 		spin_unlock_irq(&tp->lock);
@@ -6706,6 +6612,9 @@ static int tg3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	}
 
 	case SIOCSMIIREG:
+		if (tp->phy_id == PHY_ID_SERDES)
+			break;			/* We have no PHY */
+
 		if (!capable(CAP_NET_ADMIN))
 			return -EPERM;
 
@@ -7636,12 +7545,9 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 	else
 		tp->tg3_flags &= ~TG3_FLAG_TXD_MBOX_HWBUG;
 
-	/* 5700 chips can get confused if TX buffers straddle the
-	 * 4GB address boundary in some cases.
+	/* It seems all chips can get confused if TX buffers
+	 * straddle the 4GB address boundary in some cases.
 	 */
-	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700)
-		tp->dev->hard_start_xmit = tg3_start_xmit_4gbug;
-	else
 	tp->dev->hard_start_xmit = tg3_start_xmit;
 
 	tp->rx_offset = 2;

drivers/net/tg3.h

 /* $Id: tg3.h,v 1.37.2.32 2002/03/11 12:18:18 davem Exp $
  * tg3.h: Definitions for Broadcom Tigon3 ethernet driver.
  *
- * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2001, 2002, 2003, 2004 David S. Miller (davem@redhat.com)
  * Copyright (C) 2001 Jeff Garzik (jgarzik@pobox.com)
+ * Copyright (C) 2004 Sun Microsystems Inc.
  */
 
 #ifndef _T3_H
@@ -116,6 +117,7 @@
 #define  CHIPREV_ID_5704_A0		 0x2000
 #define  CHIPREV_ID_5704_A1		 0x2001
 #define  CHIPREV_ID_5704_A2		 0x2002
+#define  CHIPREV_ID_5704_A3		 0x2003
 #define  CHIPREV_ID_5705_A0		 0x3000
 #define  CHIPREV_ID_5705_A1		 0x3001
 #define  CHIPREV_ID_5705_A2		 0x3002
@@ -518,8 +520,50 @@
 #define MAC_EXTADDR_11_HIGH		0x00000588
 #define MAC_EXTADDR_11_LOW		0x0000058c
 #define MAC_SERDES_CFG			0x00000590
+#define  MAC_SERDES_CFG_EDGE_SELECT	 0x00001000
 #define MAC_SERDES_STAT			0x00000594
-/* 0x598 --> 0x600 unused */
+/* 0x598 --> 0x5b0 unused */
+#define SG_DIG_CTRL			0x000005b0
+#define  SG_DIG_USING_HW_AUTONEG	 0x80000000
+#define  SG_DIG_SOFT_RESET		 0x40000000
+#define  SG_DIG_DISABLE_LINKRDY		 0x20000000
+#define  SG_DIG_CRC16_CLEAR_N		 0x01000000
+#define  SG_DIG_EN10B			 0x00800000
+#define  SG_DIG_CLEAR_STATUS		 0x00400000
+#define  SG_DIG_LOCAL_DUPLEX_STATUS	 0x00200000
+#define  SG_DIG_LOCAL_LINK_STATUS	 0x00100000
+#define  SG_DIG_SPEED_STATUS_MASK	 0x000c0000
+#define  SG_DIG_SPEED_STATUS_SHIFT	 18
+#define  SG_DIG_JUMBO_PACKET_DISABLE	 0x00020000
+#define  SG_DIG_RESTART_AUTONEG		 0x00010000
+#define  SG_DIG_FIBER_MODE		 0x00008000
+#define  SG_DIG_REMOTE_FAULT_MASK	 0x00006000
+#define  SG_DIG_PAUSE_MASK		 0x00001800
+#define  SG_DIG_GBIC_ENABLE		 0x00000400
+#define  SG_DIG_CHECK_END_ENABLE	 0x00000200
+#define  SG_DIG_SGMII_AUTONEG_TIMER	 0x00000100
+#define  SG_DIG_CLOCK_PHASE_SELECT	 0x00000080
+#define  SG_DIG_GMII_INPUT_SELECT	 0x00000040
+#define  SG_DIG_MRADV_CRC16_SELECT	 0x00000020
+#define  SG_DIG_COMMA_DETECT_ENABLE	 0x00000010
+#define  SG_DIG_AUTONEG_TIMER_REDUCE	 0x00000008
+#define  SG_DIG_AUTONEG_LOW_ENABLE	 0x00000004
+#define  SG_DIG_REMOTE_LOOPBACK		 0x00000002
+#define  SG_DIG_LOOPBACK		 0x00000001
+#define SG_DIG_STATUS			0x000005b4
+#define  SG_DIG_CRC16_BUS_MASK		 0xffff0000
+#define  SG_DIG_PARTNER_FAULT_MASK	 0x00600000 /* If !MRADV_CRC16_SELECT */
+#define  SG_DIG_PARTNER_ASYM_PAUSE	 0x00100000 /* If !MRADV_CRC16_SELECT */
+#define  SG_DIG_PARTNER_PAUSE_CAPABLE	 0x00080000 /* If !MRADV_CRC16_SELECT */
+#define  SG_DIG_PARTNER_HALF_DUPLEX	 0x00040000 /* If !MRADV_CRC16_SELECT */
+#define  SG_DIG_PARTNER_FULL_DUPLEX	 0x00020000 /* If !MRADV_CRC16_SELECT */
+#define  SG_DIG_PARTNER_NEXT_PAGE	 0x00010000 /* If !MRADV_CRC16_SELECT */
+#define  SG_DIG_AUTONEG_STATE_MASK	 0x00000ff0
+#define  SG_DIG_COMMA_DETECTOR		 0x00000008
+#define  SG_DIG_MAC_ACK_STATUS		 0x00000004
+#define  SG_DIG_AUTONEG_COMPLETE	 0x00000002
+#define  SG_DIG_AUTONEG_ERROR		 0x00000001
+/* 0x5b8 --> 0x600 unused */
 #define MAC_TX_MAC_STATE_BASE		0x00000600 /* 16 bytes */
 #define MAC_RX_MAC_STATE_BASE		0x00000610 /* 20 bytes */
 /* 0x624 --> 0x800 unused */
@@ -2044,6 +2088,7 @@ struct tg3 {
 #define TG3_FLG2_PHY_BER_BUG		0x00000100
 #define TG3_FLG2_PCI_EXPRESS		0x00000200
 #define TG3_FLG2_ASF_NEW_HANDSHAKE	0x00000400
+#define TG3_FLG2_HW_AUTONEG		0x00000800
 
 	u32				split_mode_max_reqs;
 #define SPLIT_MODE_5704_MAX_REQ		3