X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fnet%2Fns83820.c;h=7b9d83b07e8c3da968d011752d0fb2ab5d052462;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=c2551c5fbdd111d58e23b7f42ea3aac484e7fc03;hpb=87fc8d1bb10cd459024a742c6a10961fefcef18f;p=linux-2.6.git diff --git a/drivers/net/ns83820.c b/drivers/net/ns83820.c index c2551c5fb..7b9d83b07 100644 --- a/drivers/net/ns83820.c +++ b/drivers/net/ns83820.c @@ -64,6 +64,8 @@ * tuning * 0.20 - fix stupid RFEN thinko. i am such a smurf. * + * 20040828 0.21 - add hardware vlan accleration + * by Neil Horman * Driver Overview * =============== * @@ -92,7 +94,9 @@ //#define dprintk printk #define dprintk(x...) do { } while (0) +#include #include +#include #include #include #include @@ -108,6 +112,7 @@ #include #include #include +#include #include #include @@ -115,7 +120,7 @@ #define DRV_NAME "ns83820" -/* Global parameters. See MODULE_PARM near the bottom. */ +/* Global parameters. See module_param near the bottom. */ static int ihr = 2; static int reset_phy = 0; static int lnksts = 0; /* CFG_LNKSTS bit polarity */ @@ -138,6 +143,9 @@ static int lnksts = 0; /* CFG_LNKSTS bit polarity */ /* tunables */ #define RX_BUF_SIZE 1500 /* 8192 */ +#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) +#define NS83820_VLAN_ACCEL_SUPPORT +#endif /* Must not exceed ~65000. */ #define NR_RX_DESC 64 @@ -262,6 +270,8 @@ static int lnksts = 0; /* CFG_LNKSTS bit polarity */ #define EXTSTS_UDPPKT 0x00200000 #define EXTSTS_TCPPKT 0x00080000 #define EXTSTS_IPPKT 0x00020000 +#define EXTSTS_VPKT 0x00010000 +#define EXTSTS_VTG_MASK 0x0000ffff #define SPDSTS_POLARITY (CFG_SPDSTS1 | CFG_SPDSTS0 | CFG_DUPSTS | (lnksts ? CFG_LNKSTS : 0)) @@ -403,6 +413,7 @@ static int lnksts = 0; /* CFG_LNKSTS bit polarity */ #define CMDSTS_INTR 0x20000000 #define CMDSTS_ERR 0x10000000 #define CMDSTS_OK 0x08000000 +#define CMDSTS_RUNT 0x00200000 #define CMDSTS_LEN_MASK 0x0000ffff #define CMDSTS_DEST_MASK 0x01800000 @@ -428,10 +439,14 @@ struct rx_info { struct ns83820 { struct net_device_stats stats; - u8 *base; + u8 __iomem *base; struct pci_dev *pci_dev; +#ifdef NS83820_VLAN_ACCEL_SUPPORT + struct vlan_group *vlgrp; +#endif + struct rx_info rx_info; struct tasklet_struct rx_tasklet; @@ -494,6 +509,33 @@ static inline void kick_rx(struct net_device *ndev) (((NR_TX_DESC-2 + dev->tx_done_idx - dev->tx_free_idx) % NR_TX_DESC) > MIN_TX_DESC_FREE) +#ifdef NS83820_VLAN_ACCEL_SUPPORT +static void ns83820_vlan_rx_register(struct net_device *ndev, struct vlan_group *grp) +{ + struct ns83820 *dev = PRIV(ndev); + + spin_lock_irq(&dev->misc_lock); + spin_lock(&dev->tx_lock); + + dev->vlgrp = grp; + + spin_unlock(&dev->tx_lock); + spin_unlock_irq(&dev->misc_lock); +} + +static void ns83820_vlan_rx_kill_vid(struct net_device *ndev, unsigned short vid) +{ + struct ns83820 *dev = PRIV(ndev); + + spin_lock_irq(&dev->misc_lock); + spin_lock(&dev->tx_lock); + if (dev->vlgrp) + dev->vlgrp->vlan_devices[vid] = NULL; + spin_unlock(&dev->tx_lock); + spin_unlock_irq(&dev->misc_lock); +} +#endif + /* Packet Receiver * * The hardware supports linked lists of receive descriptors for @@ -836,6 +878,7 @@ static void fastcall rx_irq(struct net_device *ndev) struct ns83820 *dev = PRIV(ndev); struct rx_info *info = &dev->rx_info; unsigned next_rx; + int rx_rc, len; u32 cmdsts, *desc; unsigned long flags; int nr = 0; @@ -876,8 +919,24 @@ static void fastcall rx_irq(struct net_device *ndev) pci_unmap_single(dev->pci_dev, bufptr, RX_BUF_SIZE, PCI_DMA_FROMDEVICE); + len = cmdsts & CMDSTS_LEN_MASK; +#ifdef NS83820_VLAN_ACCEL_SUPPORT + /* NH: As was mentioned below, this chip is kinda + * brain dead about vlan tag stripping. Frames + * that are 64 bytes with a vlan header appended + * like arp frames, or pings, are flagged as Runts + * when the tag is stripped and hardware. This + * also means that the OK bit in the descriptor + * is cleared when the frame comes in so we have + * to do a specific length check here to make sure + * the frame would have been ok, had we not stripped + * the tag. + */ + if (likely((CMDSTS_OK & cmdsts) || + ((cmdsts & CMDSTS_RUNT) && len >= 56))) { +#else if (likely(CMDSTS_OK & cmdsts)) { - int len = cmdsts & 0xffff; +#endif skb_put(skb, len); if (unlikely(!skb)) goto netdev_mangle_me_harder_failed; @@ -891,7 +950,18 @@ static void fastcall rx_irq(struct net_device *ndev) skb->ip_summed = CHECKSUM_NONE; } skb->protocol = eth_type_trans(skb, ndev); - if (NET_RX_DROP == netif_rx(skb)) { +#ifdef NS83820_VLAN_ACCEL_SUPPORT + if(extsts & EXTSTS_VPKT) { + unsigned short tag; + tag = ntohs(extsts & EXTSTS_VTG_MASK); + rx_rc = vlan_hwaccel_rx(skb,dev->vlgrp,tag); + } else { + rx_rc = netif_rx(skb); + } +#else + rx_rc = netif_rx(skb); +#endif + if (NET_RX_DROP == rx_rc) { netdev_mangle_me_harder_failed: dev->stats.rx_dropped ++; } @@ -1099,6 +1169,17 @@ again: extsts |= EXTSTS_UDPPKT; } +#ifdef NS83820_VLAN_ACCEL_SUPPORT + if(vlan_tx_tag_present(skb)) { + /* fetch the vlan tag info out of the + * ancilliary data if the vlan code + * is using hw vlan acceleration + */ + short tag = vlan_tx_tag_get(skb); + extsts |= (EXTSTS_VPKT | htons(tag)); + } +#endif + len = skb->len; if (nr_frags) len -= skb->data_len; @@ -1164,7 +1245,7 @@ again: static void ns83820_update_stats(struct ns83820 *dev) { - u8 *base = dev->base; + u8 __iomem *base = dev->base; /* the DP83820 will freeze counters, so we need to read all of them */ dev->stats.rx_errors += readl(base + 0x60) & 0xffff; @@ -1192,59 +1273,26 @@ static struct net_device_stats *ns83820_get_stats(struct net_device *ndev) return &dev->stats; } -static int ns83820_ethtool_ioctl (struct ns83820 *dev, void __user *useraddr) +static void ns83820_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info) { - u32 ethcmd; - - if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) - return -EFAULT; - - switch (ethcmd) { - case ETHTOOL_GDRVINFO: - { - struct ethtool_drvinfo info = { ETHTOOL_GDRVINFO }; - strcpy(info.driver, "ns83820"); - strcpy(info.version, VERSION); - strcpy(info.bus_info, pci_name(dev->pci_dev)); - if (copy_to_user(useraddr, &info, sizeof (info))) - return -EFAULT; - return 0; - } - - /* get link status */ - case ETHTOOL_GLINK: { - struct ethtool_value edata = { ETHTOOL_GLINK }; - u32 cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY; - - if (cfg & CFG_LNKSTS) - edata.data = 1; - else - edata.data = 0; - if (copy_to_user(useraddr, &edata, sizeof(edata))) - return -EFAULT; - return 0; - } - - default: - break; - } - - return -EOPNOTSUPP; + struct ns83820 *dev = PRIV(ndev); + strcpy(info->driver, "ns83820"); + strcpy(info->version, VERSION); + strcpy(info->bus_info, pci_name(dev->pci_dev)); } -static int ns83820_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) +static u32 ns83820_get_link(struct net_device *ndev) { struct ns83820 *dev = PRIV(ndev); - - switch(cmd) { - case SIOCETHTOOL: - return ns83820_ethtool_ioctl(dev, rq->ifr_data); - - default: - return -EOPNOTSUPP; - } + u32 cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY; + return cfg & CFG_LNKSTS ? 1 : 0; } +static struct ethtool_ops ops = { + .get_drvinfo = ns83820_get_drvinfo, + .get_link = ns83820_get_link +}; + static void ns83820_mib_isr(struct ns83820 *dev) { spin_lock(&dev->misc_lock); @@ -1545,7 +1593,7 @@ static int ns83820_change_mtu(struct net_device *ndev, int new_mtu) static void ns83820_set_multicast(struct net_device *ndev) { struct ns83820 *dev = PRIV(ndev); - u8 *rfcr = dev->base + RFCR; + u8 __iomem *rfcr = dev->base + RFCR; u32 and_mask = 0xffffffff; u32 or_mask = 0; u32 val; @@ -1849,7 +1897,7 @@ static int __devinit ns83820_init_one(struct pci_dev *pci_dev, const struct pci_ dev->IMR_cache = 0; - setup_ee_mem_bitbanger(&dev->ee, (long)dev->base + MEAR, 3, 2, 1, 0, + setup_ee_mem_bitbanger(&dev->ee, dev->base + MEAR, 3, 2, 1, 0, 0); err = request_irq(pci_dev->irq, ns83820_irq, SA_SHIRQ, @@ -1884,10 +1932,9 @@ static int __devinit ns83820_init_one(struct pci_dev *pci_dev, const struct pci_ ndev->get_stats = ns83820_get_stats; ndev->change_mtu = ns83820_change_mtu; ndev->set_multicast_list = ns83820_set_multicast; - ndev->do_ioctl = ns83820_ioctl; + SET_ETHTOOL_OPS(ndev, &ops); ndev->tx_timeout = ns83820_tx_timeout; ndev->watchdog_timeo = 5 * HZ; - pci_set_drvdata(pci_dev, ndev); ns83820_do_reset(dev, CR_RST); @@ -2013,11 +2060,25 @@ static int __devinit ns83820_init_one(struct pci_dev *pci_dev, const struct pci_ * a ping with a VLAN header) then the card, strips the 4 byte VLAN * tag and then checks the packet size, so if RXCFG_ARP is not enabled, * it discrards it!. These guys...... + * also turn on tag stripping if hardware acceleration is enabled */ - writel(VRCR_IPEN | VRCR_VTDEN, dev->base + VRCR); +#ifdef NS83820_VLAN_ACCEL_SUPPORT +#define VRCR_INIT_VALUE (VRCR_IPEN|VRCR_VTDEN|VRCR_VTREN) +#else +#define VRCR_INIT_VALUE (VRCR_IPEN|VRCR_VTDEN) +#endif + writel(VRCR_INIT_VALUE, dev->base + VRCR); - /* Enable per-packet TCP/UDP/IP checksumming */ - writel(VTCR_PPCHK, dev->base + VTCR); + /* Enable per-packet TCP/UDP/IP checksumming + * and per packet vlan tag insertion if + * vlan hardware acceleration is enabled + */ +#ifdef NS83820_VLAN_ACCEL_SUPPORT +#define VTCR_INIT_VALUE (VTCR_PPCHK|VTCR_VPPTI) +#else +#define VTCR_INIT_VALUE VTCR_PPCHK +#endif + writel(VTCR_INIT_VALUE, dev->base + VTCR); /* Ramit : Enable async and sync pause frames */ /* writel(0, dev->base + PCR); */ @@ -2034,6 +2095,13 @@ static int __devinit ns83820_init_one(struct pci_dev *pci_dev, const struct pci_ ndev->features |= NETIF_F_SG; ndev->features |= NETIF_F_IP_CSUM; +#ifdef NS83820_VLAN_ACCEL_SUPPORT + /* We also support hardware vlan acceleration */ + ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; + ndev->vlan_rx_register = ns83820_vlan_rx_register; + ndev->vlan_rx_kill_vid = ns83820_vlan_rx_kill_vid; +#endif + if (using_dac) { printk(KERN_INFO "%s: using 64 bit addressing.\n", ndev->name); @@ -2142,13 +2210,13 @@ MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, ns83820_pci_tbl); -MODULE_PARM(lnksts, "i"); +module_param(lnksts, int, 0); MODULE_PARM_DESC(lnksts, "Polarity of LNKSTS bit"); -MODULE_PARM(ihr, "i"); +module_param(ihr, int, 0); MODULE_PARM_DESC(ihr, "Time in 100 us increments to delay interrupts (range 0-127)"); -MODULE_PARM(reset_phy, "i"); +module_param(reset_phy, int, 0); MODULE_PARM_DESC(reset_phy, "Set to 1 to reset the PHY on startup"); module_init(ns83820_init);