-#define _VERSION "0.20"
+#define VERSION "0.22"
/* ns83820.c by Benjamin LaHaise with contributions.
*
* Questions/comments/discussion to linux-ns83820@kvack.org.
* - fix missed txok introduced during performance
* tuning
* 0.20 - fix stupid RFEN thinko. i am such a smurf.
- *
+ * 20040828 0.21 - add hardware vlan accleration
+ * by Neil Horman <nhorman@redhat.com>
+ * 20050406 0.22 - improved DAC ifdefs from Andi Kleen
+ * - removal of dead code from Adrian Bunk
+ * - fix half duplex collision behaviour
* Driver Overview
* ===============
*
//#define dprintk printk
#define dprintk(x...) do { } while (0)
+#include <linux/config.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/pci.h>
+#include <linux/dma-mapping.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/ip.h> /* for iph */
#include <linux/in.h> /* for IPPROTO_... */
-#include <linux/eeprom.h>
#include <linux/compiler.h>
#include <linux/prefetch.h>
#include <linux/ethtool.h>
#include <linux/timer.h>
+#include <linux/if_vlan.h>
+#include <linux/rtnetlink.h>
+#include <linux/jiffies.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#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 */
#undef Dprintk
#define Dprintk dprintk
-#if defined(CONFIG_HIGHMEM64G) || defined(__ia64__)
-#define USE_64BIT_ADDR "+"
-#endif
-
-#if defined(USE_64BIT_ADDR)
-#define VERSION _VERSION USE_64BIT_ADDR
-#define TRY_DAC 1
-#else
-#define VERSION _VERSION
-#define TRY_DAC 0
-#endif
-
/* 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
#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))
#define LINK_DOWN 0x02
#define LINK_UP 0x04
-#ifdef USE_64BIT_ADDR
-#define HW_ADDR_LEN 8
+#define HW_ADDR_LEN sizeof(dma_addr_t)
#define desc_addr_set(desc, addr) \
do { \
- u64 __addr = (addr); \
- (desc)[0] = cpu_to_le32(__addr); \
- (desc)[1] = cpu_to_le32(__addr >> 32); \
+ ((desc)[0] = cpu_to_le32(addr)); \
+ if (HW_ADDR_LEN == 8) \
+ (desc)[1] = cpu_to_le32(((u64)addr) >> 32); \
} while(0)
#define desc_addr_get(desc) \
- (((u64)le32_to_cpu((desc)[1]) << 32) \
- | le32_to_cpu((desc)[0]))
-#else
-#define HW_ADDR_LEN 4
-#define desc_addr_set(desc, addr) ((desc)[0] = cpu_to_le32(addr))
-#define desc_addr_get(desc) (le32_to_cpu((desc)[0]))
-#endif
+ (le32_to_cpu((desc)[0]) | \
+ (HW_ADDR_LEN == 8 ? ((dma_addr_t)le32_to_cpu((desc)[1]))<<32 : 0))
#define DESC_LINK 0
#define DESC_BUFPTR (DESC_LINK + HW_ADDR_LEN/4)
#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
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;
u32 MEAR_cache;
u32 IMR_cache;
- struct eeprom ee;
unsigned linkstate;
(((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
#endif
sg = dev->rx_info.descs + (next_empty * DESC_SIZE);
- if (unlikely(NULL != dev->rx_info.skbs[next_empty]))
- BUG();
+ BUG_ON(NULL != dev->rx_info.skbs[next_empty]);
dev->rx_info.skbs[next_empty] = skb;
dev->rx_info.next_empty = (next_empty + 1) % NR_RX_DESC;
cmdsts = REAL_RX_BUF_SIZE | CMDSTS_INTR;
- buf = pci_map_single(dev->pci_dev, skb->tail,
+ buf = pci_map_single(dev->pci_dev, skb->data,
REAL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
build_rx_desc(dev, sg, 0, buf, cmdsts, 0);
/* update link of previous rx */
return 0;
}
-static inline int rx_refill(struct net_device *ndev, int gfp)
+static inline int rx_refill(struct net_device *ndev, gfp_t gfp)
{
struct ns83820 *dev = PRIV(ndev);
unsigned i;
if (unlikely(!skb))
break;
- res = (long)skb->tail & 0xf;
+ res = (long)skb->data & 0xf;
res = 0x10 - res;
res &= 0xf;
skb_reserve(skb, res);
static void fastcall phy_intr(struct net_device *ndev)
{
struct ns83820 *dev = PRIV(ndev);
- static char *speeds[] = { "10", "100", "1000", "1000(?)", "1000F" };
+ static const char *speeds[] = { "10", "100", "1000", "1000(?)", "1000F" };
u32 cfg, new_cfg;
u32 tbisr, tanar, tanlpar;
int speed, fullduplex, newlinkstate;
speed = ((cfg / CFG_SPDSTS0) & 3);
fullduplex = (cfg & CFG_DUPSTS);
- if (fullduplex)
+ if (fullduplex) {
new_cfg |= CFG_SB;
+ writel(readl(dev->base + TXCFG)
+ | TXCFG_CSI | TXCFG_HBI,
+ dev->base + TXCFG);
+ writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
+ dev->base + RXCFG);
+ } else {
+ writel(readl(dev->base + TXCFG)
+ & ~(TXCFG_CSI | TXCFG_HBI),
+ dev->base + TXCFG);
+ writel(readl(dev->base + RXCFG) & ~(RXCFG_RX_FD),
+ dev->base + RXCFG);
+ }
if ((cfg & CFG_LNKSTS) &&
- ((new_cfg ^ dev->CFG_cache) & CFG_MODE_1000)) {
+ ((new_cfg ^ dev->CFG_cache) != 0)) {
writel(new_cfg, dev->base + CFG);
dev->CFG_cache = new_cfg;
}
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;
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;
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 ++;
}
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;
for (;;) {
volatile u32 *desc = dev->tx_descs + (free_idx * DESC_SIZE);
- u32 residue = 0;
dprintk("frag[%3u]: %4u @ 0x%08Lx\n", free_idx, len,
(unsigned long long)buf);
desc_addr_set(desc + DESC_BUFPTR, buf);
desc[DESC_EXTSTS] = cpu_to_le32(extsts);
- cmdsts = ((nr_frags|residue) ? CMDSTS_MORE : do_intr ? CMDSTS_INTR : 0);
+ cmdsts = ((nr_frags) ? CMDSTS_MORE : do_intr ? CMDSTS_INTR : 0);
cmdsts |= (desc == first_desc) ? 0 : CMDSTS_OWN;
cmdsts |= len;
desc[DESC_CMDSTS] = cpu_to_le32(cmdsts);
- if (residue) {
- buf += len;
- len = residue;
- continue;
- }
-
if (!nr_frags)
break;
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;
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);
unsigned i;
for (i=0; i<3; i++) {
u32 data;
-#if 0 /* I've left this in as an example of how to use eeprom.h */
- data = eeprom_readw(&dev->ee, 0xa + 2 - i);
-#else
+
/* Read from the perfect match memory: this is loaded by
* the chip from the EEPROM via the EELOAD self test.
*/
writel(i*2, dev->base + RFCR);
data = readl(dev->base + RFDR);
-#endif
+
*mac++ = data;
*mac++ = data >> 8;
}
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;
{
struct ns83820 *dev = PRIV(ndev);
int timed_out = 0;
- long start;
+ unsigned long start;
u32 status;
int loops = 0;
break;
if (status & fail)
break;
- if ((jiffies - start) >= HZ) {
+ if (time_after_eq(jiffies, start + HZ)) {
timed_out = 1;
break;
}
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
+ schedule_timeout_uninterruptible(1);
}
if (status & fail)
int using_dac = 0;
/* See if we can set the dma mask early on; failure is fatal. */
- if (TRY_DAC && !pci_set_dma_mask(pci_dev, 0xffffffffffffffffULL)) {
+ if (sizeof(dma_addr_t) == 8 &&
+ !pci_set_dma_mask(pci_dev, DMA_64BIT_MASK)) {
using_dac = 1;
- } else if (!pci_set_dma_mask(pci_dev, 0xffffffff)) {
+ } else if (!pci_set_dma_mask(pci_dev, DMA_32BIT_MASK)) {
using_dac = 0;
} else {
printk(KERN_WARNING "ns83820.c: pci_set_dma_mask failed!\n");
spin_lock_init(&dev->misc_lock);
dev->pci_dev = pci_dev;
- dev->ee.cache = &dev->MEAR_cache;
- dev->ee.lock = &dev->misc_lock;
SET_MODULE_OWNER(ndev);
SET_NETDEV_DEV(ndev, &pci_dev->dev);
dev->IMR_cache = 0;
- setup_ee_mem_bitbanger(&dev->ee, (long)dev->base + MEAR, 3, 2, 1, 0,
- 0);
-
err = request_irq(pci_dev->irq, ns83820_irq, SA_SHIRQ,
DRV_NAME, ndev);
if (err) {
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);
/* When compiled with 64 bit addressing, we must always enable
* the 64 bit descriptor format.
*/
-#ifdef USE_64BIT_ADDR
- dev->CFG_cache |= CFG_M64ADDR;
-#endif
+ if (sizeof(dma_addr_t) == 8)
+ dev->CFG_cache |= CFG_M64ADDR;
if (using_dac)
dev->CFG_cache |= CFG_T64ADDR;
if (reset_phy) {
printk(KERN_INFO "%s: resetting phy\n", ndev->name);
writel(dev->CFG_cache | CFG_PHY_RST, dev->base + CFG);
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((HZ+99)/100);
+ msleep(10);
writel(dev->CFG_cache, dev->base + CFG);
}
* 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); */
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);
pci_unregister_driver(&driver);
}
-MODULE_AUTHOR("Benjamin LaHaise <bcrl@redhat.com>");
+MODULE_AUTHOR("Benjamin LaHaise <bcrl@kvack.org>");
MODULE_DESCRIPTION("National Semiconductor DP83820 10/100/1000 driver");
MODULE_LICENSE("GPL");
+MODULE_VERSION(VERSION);
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);
git://git.onelab.eu / linux-2.6.git / blobdiff