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path: root/drivers/net/ioc3-eth.c
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Diffstat (limited to 'drivers/net/ioc3-eth.c')
-rw-r--r--drivers/net/ioc3-eth.c165
1 files changed, 104 insertions, 61 deletions
diff --git a/drivers/net/ioc3-eth.c b/drivers/net/ioc3-eth.c
index 63b0182b7..7342b98b5 100644
--- a/drivers/net/ioc3-eth.c
+++ b/drivers/net/ioc3-eth.c
@@ -81,19 +81,11 @@
#define SIOCGPARAMS (SIOCDEVPRIVATE+3) /* Read operational parameters */
#define SIOCSPARAMS (SIOCDEVPRIVATE+4) /* Set operational parameters */
-static int ioc3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-static void ioc3_set_multicast_list(struct net_device *dev);
-static int ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev);
-static void ioc3_timeout(struct net_device *dev);
-static inline unsigned int ioc3_hash(const unsigned char *addr);
-
-static const char ioc3_str[] = "IOC3 Ethernet";
-
/* Private per NIC data of the driver. */
struct ioc3_private {
struct ioc3 *regs;
int phy;
- unsigned long rxr; /* pointer to receiver ring */
+ unsigned long *rxr; /* pointer to receiver ring */
struct ioc3_etxd *txr;
struct sk_buff *rx_skbs[512];
struct sk_buff *tx_skbs[128];
@@ -107,6 +99,18 @@ struct ioc3_private {
spinlock_t ioc3_lock;
};
+static int ioc3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static void ioc3_set_multicast_list(struct net_device *dev);
+static int ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static void ioc3_timeout(struct net_device *dev);
+static inline unsigned int ioc3_hash(const unsigned char *addr);
+static void ioc3_stop(struct net_device *dev);
+static void ioc3_clean_tx_ring(struct ioc3_private *ip);
+static void ioc3_clean_rx_ring(struct ioc3_private *ip);
+static void ioc3_init(struct net_device *dev);
+
+static const char ioc3_str[] = "IOC3 Ethernet";
+
/* We use this to acquire receive skb's that we can DMA directly into. */
#define ALIGNED_RX_SKB_ADDR(addr) \
((((unsigned long)(addr) + (128 - 1)) & ~(128 - 1)) - (unsigned long)(addr))
@@ -288,7 +292,7 @@ static int nic_init(struct ioc3 *ioc3)
type = "unknown";
- do {
+ while (1) {
u64 reg;
reg = nic_find(ioc3, &save);
@@ -317,7 +321,8 @@ static int nic_init(struct ioc3 *ioc3)
reg >>= 8;
}
crc = reg & 0xff;
- } while (0);
+ break;
+ }
printk("Found %s NIC", type);
if (type != "unknown") {
@@ -442,21 +447,17 @@ ioc3_rx(struct net_device *dev, struct ioc3_private *ip, struct ioc3 *ioc3)
ip->stats.rx_packets++; /* Statistics */
ip->stats.rx_bytes += len;
- goto next;
- }
- if (err & (ERXBUF_CRCERR | ERXBUF_FRAMERR | ERXBUF_CODERR |
- ERXBUF_INVPREAMB | ERXBUF_BADPKT | ERXBUF_CARRIER)) {
- /* We don't send the skbuf to the network layer, so
- just recycle it. */
- new_skb = skb;
-
- if (err & ERXBUF_CRCERR) /* Statistics */
- ip->stats.rx_crc_errors++;
- if (err & ERXBUF_FRAMERR)
- ip->stats.rx_frame_errors++;
- ip->stats.rx_errors++;
+ } else {
+ /* The frame is invalid and the skb never
+ reached the network layer so we can just
+ recycle it. */
+ new_skb = skb;
+ ip->stats.rx_errors++;
}
-
+ if (err & ERXBUF_CRCERR) /* Statistics */
+ ip->stats.rx_crc_errors++;
+ if (err & ERXBUF_FRAMERR)
+ ip->stats.rx_frame_errors++;
next:
ip->rx_skbs[n_entry] = new_skb;
rxr[n_entry] = (0xa5UL << 56) |
@@ -621,52 +622,70 @@ int ioc3_mii_init(struct net_device *dev, struct ioc3_private *ip,
}
static void
-ioc3_init_rings(struct net_device *dev, struct ioc3_private *ip,
- struct ioc3 *ioc3)
+ioc3_alloc_rings(struct net_device *dev, struct ioc3_private *ip,
+ struct ioc3 *ioc3)
{
struct ioc3_erxbuf *rxb;
unsigned long *rxr;
- unsigned long ring;
int i;
- /* Allocate and initialize rx ring. 4kb = 512 entries */
- ip->rxr = get_free_page(GFP_KERNEL);
- rxr = (unsigned long *) ip->rxr;
+ if (ip->rxr == NULL) {
+ /* Allocate and initialize rx ring. 4kb = 512 entries */
+ ip->rxr = (unsigned long *) get_free_page(GFP_KERNEL);
+ rxr = (unsigned long *) ip->rxr;
+
+ /* Now the rx buffers. The RX ring may be larger but
+ we only allocate 16 buffers for now. Need to tune
+ this for performance and memory later. */
+ for (i = 0; i < RX_BUFFS; i++) {
+ struct sk_buff *skb;
+
+ skb = ioc3_alloc_skb(RX_BUF_ALLOC_SIZE, 0);
+ if (!skb) {
+ show_free_areas();
+ continue;
+ }
- /* Now the rx buffers. The RX ring may be larger but we only
- allocate 16 buffers for now. Need to tune this for performance
- and memory later. */
- for (i = 0; i < RX_BUFFS; i++) {
- struct sk_buff *skb;
+ ip->rx_skbs[i] = skb;
+ skb->dev = dev;
- skb = ioc3_alloc_skb(RX_BUF_ALLOC_SIZE, 0);
- if (!skb) {
- show_free_areas();
- continue;
+ /* Because we reserve afterwards. */
+ skb_put(skb, (1664 + RX_OFFSET));
+ rxb = (struct ioc3_erxbuf *) skb->data;
+ rxr[i] = (0xa5UL << 56)
+ | ((unsigned long) rxb & TO_PHYS_MASK);
+ skb_reserve(skb, RX_OFFSET);
}
+ ip->rx_ci = 0;
+ ip->rx_pi = RX_BUFFS;
+ }
- ip->rx_skbs[i] = skb;
- skb->dev = dev;
-
- /* Because we reserve afterwards. */
- skb_put(skb, (1664 + RX_OFFSET));
- rxb = (struct ioc3_erxbuf *) skb->data;
- rxb->w0 = 0; /* Clear valid bit */
- rxr[i] = (0xa5UL << 56) | ((unsigned long) rxb & TO_PHYS_MASK);
- skb_reserve(skb, RX_OFFSET);
+ if (ip->txr == NULL) {
+ /* Allocate and initialize tx rings. 16kb = 128 bufs. */
+ ip->txr = (struct ioc3_etxd *)__get_free_pages(GFP_KERNEL, 2);
+ ip->tx_pi = 0;
+ ip->tx_ci = 0;
}
+}
+
+static void
+ioc3_init_rings(struct net_device *dev, struct ioc3_private *ip,
+ struct ioc3 *ioc3)
+{
+ unsigned long ring;
+
+ ioc3_alloc_rings(dev, ip, ioc3);
+
+ ioc3_clean_tx_ring(ip);
+ ioc3_clean_rx_ring(ip);
/* Now the rx ring base, consume & produce registers. */
- ring = (0xa5UL << 56) | (ip->rxr & TO_PHYS_MASK);
+ ring = (0xa5UL << 56) | ((unsigned long)ip->rxr & TO_PHYS_MASK);
ioc3->erbr_h = ring >> 32;
ioc3->erbr_l = ring & 0xffffffff;
- ip->rx_ci = 0;
ioc3->ercir = (ip->rx_ci << 3);
- ip->rx_pi = RX_BUFFS;
ioc3->erpir = (ip->rx_pi << 3) | ERPIR_ARM;
- /* Allocate and initialize tx rings. 16kb = 128 bufs. */
- ip->txr = (struct ioc3_etxd *)__get_free_pages(GFP_KERNEL, 2);
ring = (0xa5UL << 56) | ((unsigned long)ip->txr & TO_PHYS_MASK);
ip->txqlen = 0; /* nothing queued */
@@ -674,10 +693,8 @@ ioc3_init_rings(struct net_device *dev, struct ioc3_private *ip,
/* Now the tx ring base, consume & produce registers. */
ioc3->etbr_h = ring >> 32;
ioc3->etbr_l = ring & 0xffffffff;
- ip->tx_pi = 0;
ioc3->etpir = (ip->tx_pi << 7);
- ip->tx_ci = 0;
- ioc3->etcir = (ip->tx_pi << 7);
+ ioc3->etcir = (ip->tx_ci << 7);
ioc3->etcir; /* Flush */
}
@@ -693,24 +710,47 @@ ioc3_clean_tx_ring(struct ioc3_private *ip)
ip->tx_skbs[i] = NULL;
dev_kfree_skb_any(skb);
}
+ ip->txr[i].cmd = 0;
}
}
static void
-ioc3_free_rings(struct ioc3_private *ip)
+ioc3_clean_rx_ring(struct ioc3_private *ip)
{
struct sk_buff *skb;
int i;
+
+ for (i = 0; i < RX_BUFFS; i++) {
+ struct ioc3_erxbuf *rxb;
+ skb = ip->rx_skbs[i];
+ rxb = (struct ioc3_erxbuf *) (skb->data - RX_OFFSET);
+
+ rxb->w0 = 0;
+ }
+}
+
+static void
+ioc3_free_rings(struct ioc3_private *ip)
+{
+ struct sk_buff *skb;
+ int rx_entry, n_entry;
ioc3_clean_tx_ring(ip);
free_pages((unsigned long)ip->txr, 2);
+ ip->txr = NULL;
- for (i=0; i < 512; i++) {
- skb = ip->rx_skbs[i];
+ n_entry = ip->rx_ci;
+ rx_entry = ip->rx_pi;
+
+ while (n_entry != rx_entry) {
+ skb = ip->rx_skbs[n_entry];
if (skb)
dev_kfree_skb_any(skb);
+
+ n_entry = (n_entry + 1) & 511;
}
free_page((unsigned long)ip->rxr);
+ ip->rxr = NULL;
}
static inline void
@@ -745,7 +785,8 @@ static void ioc3_init(struct net_device *dev)
ioc3->emcr = EMCR_RST; /* Reset */
ioc3->emcr; /* flush WB */
udelay(4); /* Give it time ... */
- ioc3->emcr = ip->emcr;
+ ioc3->emcr = 0;
+ ioc3->emcr;
/* Misc registers */
ioc3->erbar = 0;
@@ -767,6 +808,7 @@ static void ioc3_init(struct net_device *dev)
ioc3->emcr = ip->emcr;
ioc3->eier = EISR_RXTIMERINT | EISR_TXEXPLICIT | /* Interrupts ... */
EISR_RXMEMERR | EISR_TXMEMERR;
+ ioc3->eier;
}
static void ioc3_stop(struct net_device *dev)
@@ -775,6 +817,7 @@ static void ioc3_stop(struct net_device *dev)
struct ioc3 *ioc3 = ip->regs;
ioc3->emcr = 0; /* Shutup */
+ ip->emcr = 0;
ioc3->eier = 0; /* Disable interrupts */
ioc3->eier; /* Flush */
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 07:17:33 +0000