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Commit ee407b02 authored by Ayaz Abdulla's avatar Ayaz Abdulla Committed by Jeff Garzik
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[PATCH] forcedeth: Add vlan support 



This forcedeth patch adds support for vlan stripping/inserting in hardware.

Signed-off-By: default avatarAyaz Abdulla <aabdulla@nvidia.com>

Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent bd71c2b1

drivers/net/forcedeth.c

+71 −5
Original line number Diff line number Diff line
@@ -102,6 +102,7 @@ 
 *	0.47: 26 Oct 2005: Add phyaddr 0 in phy scan.

 *	0.48: 24 Dec 2005: Disable TSO, bugfix for pci_map_single

 *	0.49: 10 Dec 2005: Fix tso for large buffers.

 *	0.50: 20 Jan 2006: Add 8021pq tagging support.

 *

 * Known bugs:

 * We suspect that on some hardware no TX done interrupts are generated.
@@ -113,7 +114,7 @@ 
 * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few

 * superfluous timer interrupts from the nic.

 */

#define FORCEDETH_VERSION		"0.49"

#define FORCEDETH_VERSION		"0.50"

#define DRV_NAME			"forcedeth"



#include <linux/module.h>
@@ -153,6 +154,7 @@ 
#define DEV_HAS_LARGEDESC	0x0004	/* device supports jumbo frames and needs packet format 2 */

#define DEV_HAS_HIGH_DMA        0x0008  /* device supports 64bit dma */

#define DEV_HAS_CHECKSUM        0x0010  /* device supports tx and rx checksum offloads */

#define DEV_HAS_VLAN            0x0020  /* device supports vlan tagging and striping */



enum {

	NvRegIrqStatus = 0x000,
@@ -254,6 +256,8 @@ enum { 
#define NVREG_TXRXCTL_DESC_1	0

#define NVREG_TXRXCTL_DESC_2	0x02100

#define NVREG_TXRXCTL_DESC_3	0x02200

#define NVREG_TXRXCTL_VLANSTRIP 0x00040

#define NVREG_TXRXCTL_VLANINS	0x00080

	NvRegMIIStatus = 0x180,

#define NVREG_MIISTAT_ERROR		0x0001

#define NVREG_MIISTAT_LINKCHANGE	0x0008
@@ -303,6 +307,8 @@ enum { 
#define NVREG_POWERSTATE_D1		0x0001

#define NVREG_POWERSTATE_D2		0x0002

#define NVREG_POWERSTATE_D3		0x0003

	NvRegVlanControl = 0x300,

#define NVREG_VLANCONTROL_ENABLE	0x2000

};



/* Big endian: should work, but is untested */
@@ -314,7 +320,7 @@ struct ring_desc { 
struct ring_desc_ex {

	u32 PacketBufferHigh;

	u32 PacketBufferLow;

	u32 Reserved;

	u32 TxVlan;

	u32 FlagLen;

};
@@ -355,6 +361,8 @@ typedef union _ring_type { 
#define NV_TX2_CHECKSUM_L3	(1<<27)

#define NV_TX2_CHECKSUM_L4	(1<<26)



#define NV_TX3_VLAN_TAG_PRESENT (1<<18)



#define NV_RX_DESCRIPTORVALID	(1<<16)

#define NV_RX_MISSEDFRAME	(1<<17)

#define NV_RX_SUBSTRACT1	(1<<18)
@@ -385,6 +393,9 @@ typedef union _ring_type { 
#define NV_RX2_ERROR		(1<<30)

#define NV_RX2_AVAIL		(1<<31)



#define NV_RX3_VLAN_TAG_PRESENT (1<<16)

#define NV_RX3_VLAN_TAG_MASK	(0x0000FFFF)



/* Miscelaneous hardware related defines: */

#define NV_PCI_REGSZ		0x270
@@ -511,6 +522,7 @@ struct fe_priv { 
	u32 irqmask;

	u32 desc_ver;

	u32 txrxctl_bits;

	u32 vlanctl_bits;



	void __iomem *base;
@@ -540,6 +552,9 @@ struct fe_priv { 
	dma_addr_t tx_dma[TX_RING];

	unsigned int tx_dma_len[TX_RING];

	u32 tx_flags;



	/* vlan fields */

	struct vlan_group *vlangrp;

};



/*
@@ -1031,6 +1046,7 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev) 
	u32 bcnt;

	u32 size = skb->len-skb->data_len;

	u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);

	u32 tx_flags_vlan = 0;



	/* add fragments to entries count */

	for (i = 0; i < fragments; i++) {
@@ -1111,10 +1127,16 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev) 
#endif

	tx_flags_extra = (skb->ip_summed == CHECKSUM_HW ? (NV_TX2_CHECKSUM_L3|NV_TX2_CHECKSUM_L4) : 0);



	/* vlan tag */

	if (np->vlangrp && vlan_tx_tag_present(skb)) {

		tx_flags_vlan = NV_TX3_VLAN_TAG_PRESENT | vlan_tx_tag_get(skb);

	}



	/* set tx flags */

	if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {

		np->tx_ring.orig[start_nr].FlagLen |= cpu_to_le32(tx_flags | tx_flags_extra);

	} else {

		np->tx_ring.ex[start_nr].TxVlan = cpu_to_le32(tx_flags_vlan);

		np->tx_ring.ex[start_nr].FlagLen |= cpu_to_le32(tx_flags | tx_flags_extra);

	}
@@ -1342,6 +1364,8 @@ static void nv_rx_process(struct net_device *dev) 
{

	struct fe_priv *np = netdev_priv(dev);

	u32 Flags;

	u32 vlanflags = 0;





	for (;;) {

		struct sk_buff *skb;
@@ -1357,6 +1381,7 @@ static void nv_rx_process(struct net_device *dev) 
		} else {

			Flags = le32_to_cpu(np->rx_ring.ex[i].FlagLen);

			len = nv_descr_getlength_ex(&np->rx_ring.ex[i], np->desc_ver);

			vlanflags = le32_to_cpu(np->rx_ring.ex[i].PacketBufferLow);

		}



		dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, Flags 0x%x.\n",
@@ -1474,7 +1499,11 @@ static void nv_rx_process(struct net_device *dev) 
		skb->protocol = eth_type_trans(skb, dev);

		dprintk(KERN_DEBUG "%s: nv_rx_process: packet %d with %d bytes, proto %d accepted.\n",

					dev->name, np->cur_rx, len, skb->protocol);

		if (np->vlangrp && (vlanflags & NV_RX3_VLAN_TAG_PRESENT)) {

			vlan_hwaccel_rx(skb, np->vlangrp, vlanflags & NV_RX3_VLAN_TAG_MASK);

		} else {

			netif_rx(skb);

		}

		dev->last_rx = jiffies;

		np->stats.rx_packets++;

		np->stats.rx_bytes += len;
@@ -2217,6 +2246,34 @@ static struct ethtool_ops ops = { 
	.get_perm_addr = ethtool_op_get_perm_addr,

};



static void nv_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)

{

	struct fe_priv *np = get_nvpriv(dev);



	spin_lock_irq(&np->lock);



	/* save vlan group */

	np->vlangrp = grp;



	if (grp) {

		/* enable vlan on MAC */

		np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP | NVREG_TXRXCTL_VLANINS;

	} else {

		/* disable vlan on MAC */

		np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;

		np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;

	}



	writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);



	spin_unlock_irq(&np->lock);

};



static void nv_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)

{

	/* nothing to do */

};



static int nv_open(struct net_device *dev)

{

	struct fe_priv *np = netdev_priv(dev);
@@ -2265,6 +2322,7 @@ static int nv_open(struct net_device *dev) 
	writel(np->linkspeed, base + NvRegLinkSpeed);

	writel(NVREG_UNKSETUP3_VAL1, base + NvRegUnknownSetupReg3);

	writel(np->txrxctl_bits, base + NvRegTxRxControl);

	writel(np->vlanctl_bits, base + NvRegVlanControl);

	pci_push(base);

	writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);

	reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
@@ -2496,6 +2554,14 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i 
#endif

 	}



	np->vlanctl_bits = 0;

	if (id->driver_data & DEV_HAS_VLAN) {

		np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;

		dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;

		dev->vlan_rx_register = nv_vlan_rx_register;

		dev->vlan_rx_kill_vid = nv_vlan_rx_kill_vid;

	}



	err = -ENOMEM;

	np->base = ioremap(addr, NV_PCI_REGSZ);

	if (!np->base)
@@ -2737,11 +2803,11 @@ static struct pci_device_id pci_tbl[] = { 
	},

	{	/* MCP55 Ethernet Controller */

		PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),

		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,

		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN,

	},

	{	/* MCP55 Ethernet Controller */

		PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),

		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA,

		.driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN,

	},

	{0,},

};