-diff -urN linux.old/drivers/net/korina.c linux.dev/drivers/net/korina.c
---- linux.old/drivers/net/korina.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux.dev/drivers/net/korina.c 2006-12-14 03:18:45.000000000 +0100
-@@ -0,0 +1,1160 @@
-+/**************************************************************************
-+ *
-+ * BRIEF MODULE DESCRIPTION
-+ * Driver for the IDT RC32434 on-chip ethernet controller.
-+ *
-+ * Copyright 2004 IDT Inc. (rischelp@idt.com)
-+ * Copyright 2006 Felix Fietkau <nbd@openwrt.org>
-+ *
-+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License as published by the
-+ * Free Software Foundation; either version 2 of the License, or (at your
-+ * option) any later version.
-+ *
-+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
-+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
-+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ *
-+ * You should have received a copy of the GNU General Public License along
-+ * with this program; if not, write to the Free Software Foundation, Inc.,
-+ * 675 Mass Ave, Cambridge, MA 02139, USA.
-+ *
-+ *
-+ **************************************************************************
-+ * May 2004 rkt, neb
-+ *
-+ * Based on the driver developed by B. Maruthanayakam, H. Kou and others.
-+ *
-+ * Aug 2004 Sadik
-+ *
-+ * Added NAPI
-+ *
-+ **************************************************************************
-+ */
-+
-+#include <linux/autoconf.h>
-+#include <linux/module.h>
-+#include <linux/kernel.h>
-+#include <linux/moduleparam.h>
-+#include <linux/sched.h>
-+#include <linux/ctype.h>
-+#include <linux/types.h>
-+#include <linux/fcntl.h>
-+#include <linux/interrupt.h>
-+#include <linux/ptrace.h>
-+#include <linux/init.h>
-+#include <linux/ioport.h>
-+#include <linux/proc_fs.h>
-+#include <linux/in.h>
-+#include <linux/slab.h>
-+#include <linux/string.h>
-+#include <linux/delay.h>
-+#include <linux/netdevice.h>
-+#include <linux/etherdevice.h>
-+#include <linux/skbuff.h>
-+#include <linux/errno.h>
-+#include <linux/platform_device.h>
-+#include <asm/bootinfo.h>
-+#include <asm/system.h>
-+#include <asm/bitops.h>
-+#include <asm/pgtable.h>
-+#include <asm/segment.h>
-+#include <asm/io.h>
-+#include <asm/dma.h>
-+
-+#include <asm/rc32434/rb.h>
-+#include "rc32434_eth.h"
-+
-+#define DRIVER_VERSION "(mar2904)"
-+
-+#define DRIVER_NAME "rc32434 Ethernet driver. " DRIVER_VERSION
-+
-+#define STATION_ADDRESS_HIGH(dev) (((dev)->dev_addr[0] << 8) | \
-+ ((dev)->dev_addr[1]))
-+#define STATION_ADDRESS_LOW(dev) (((dev)->dev_addr[2] << 24) | \
-+ ((dev)->dev_addr[3] << 16) | \
-+ ((dev)->dev_addr[4] << 8) | \
-+ ((dev)->dev_addr[5]))
-+
-+#define MII_CLOCK 1250000 /* no more than 2.5MHz */
-+#define CONFIG_IDT_USE_NAPI 1
-+
-+
-+static inline void rc32434_abort_tx(struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ rc32434_abort_dma(dev, lp->tx_dma_regs);
-+
-+}
-+
-+static inline void rc32434_abort_rx(struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ rc32434_abort_dma(dev, lp->rx_dma_regs);
-+
-+}
-+
-+static inline void rc32434_start_tx(struct rc32434_local *lp, volatile DMAD_t td)
-+{
-+ rc32434_start_dma(lp->tx_dma_regs, CPHYSADDR(td));
-+}
-+
-+static inline void rc32434_start_rx(struct rc32434_local *lp, volatile DMAD_t rd)
-+{
-+ rc32434_start_dma(lp->rx_dma_regs, CPHYSADDR(rd));
-+}
-+
-+static inline void rc32434_chain_tx(struct rc32434_local *lp, volatile DMAD_t td)
-+{
-+ rc32434_chain_dma(lp->tx_dma_regs, CPHYSADDR(td));
-+}
-+
-+static inline void rc32434_chain_rx(struct rc32434_local *lp, volatile DMAD_t rd)
-+{
-+ rc32434_chain_dma(lp->rx_dma_regs, CPHYSADDR(rd));
-+}
-+
-+#ifdef RC32434_PROC_DEBUG
-+static int rc32434_read_proc(char *buf, char **start, off_t fpos,
-+ int length, int *eof, void *data)
-+{
-+ struct net_device *dev = (struct net_device *)data;
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ int len = 0;
-+
-+ /* print out header */
-+ len += sprintf(buf + len, "\n\tKorina Ethernet Debug\n\n");
-+ len += sprintf (buf + len,
-+ "DMA halt count = %10d, DMA run count = %10d\n",
-+ lp->dma_halt_cnt, lp->dma_run_cnt);
-+
-+ if (fpos >= len) {
-+ *start = buf;
-+ *eof = 1;
-+ return 0;
-+ }
-+ *start = buf + fpos;
-+
-+ if ((len -= fpos) > length)
-+ return length;
-+ *eof = 1;
-+
-+ return len;
-+
-+}
-+#endif
-+
-+
-+/*
-+ * Restart the RC32434 ethernet controller.
-+ */
-+static int rc32434_restart(struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+
-+ /*
-+ * Disable interrupts
-+ */
-+ disable_irq(lp->rx_irq);
-+ disable_irq(lp->tx_irq);
-+#ifdef RC32434_REVISION
-+ disable_irq(lp->ovr_irq);
-+#endif
-+ disable_irq(lp->und_irq);
-+
-+ /* Mask F E bit in Tx DMA */
-+ __raw_writel(__raw_readl(&lp->tx_dma_regs->dmasm) | DMASM_f_m | DMASM_e_m, &lp->tx_dma_regs->dmasm);
-+ /* Mask D H E bit in Rx DMA */
-+ __raw_writel(__raw_readl(&lp->rx_dma_regs->dmasm) | DMASM_d_m | DMASM_h_m | DMASM_e_m, &lp->rx_dma_regs->dmasm);
-+
-+ rc32434_init(dev);
-+ rc32434_multicast_list(dev);
-+
-+ enable_irq(lp->und_irq);
-+#ifdef RC32434_REVISION
-+ enable_irq(lp->ovr_irq);
-+#endif
-+ enable_irq(lp->tx_irq);
-+ enable_irq(lp->rx_irq);
-+
-+ return 0;
-+}
-+
-+static int rc32434_probe(struct platform_device *pdev)
-+{
-+ struct korina_device *bif = (struct korina_device *) pdev->dev.platform_data;
-+ struct rc32434_local *lp = NULL;
-+ struct net_device *dev = NULL;
-+ struct resource *r;
-+ int i, retval,err;
-+
-+ dev = alloc_etherdev(sizeof(struct rc32434_local));
-+ if(!dev) {
-+ ERR("Korina_eth: alloc_etherdev failed\n");
-+ return -1;
-+ }
-+
-+ platform_set_drvdata(pdev, dev);
-+ SET_MODULE_OWNER(dev);
-+ bif->dev = dev;
-+
-+ memcpy(dev->dev_addr, bif->mac, 6);
-+
-+ /* Initialize the device structure. */
-+ if (dev->priv == NULL) {
-+ lp = (struct rc32434_local *)kmalloc(sizeof(*lp), GFP_KERNEL);
-+ memset(lp, 0, sizeof(struct rc32434_local));
-+ }
-+ else {
-+ lp = (struct rc32434_local *)dev->priv;
-+ }
-+
-+ lp->rx_irq = platform_get_irq_byname(pdev, "korina_rx");
-+ lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx");
-+ lp->ovr_irq = platform_get_irq_byname(pdev, "korina_ovr");
-+ lp->und_irq = platform_get_irq_byname(pdev, "korina_und");
-+
-+ r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_regs");
-+ dev->base_addr = r->start;
-+ lp->eth_regs = ioremap_nocache(r->start, r->end - r->start);
-+ if (!lp->eth_regs) {
-+ ERR("Can't remap eth registers\n");
-+ retval = -ENXIO;
-+ goto probe_err_out;
-+ }
-+
-+ r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_rx");
-+ lp->rx_dma_regs = ioremap_nocache(r->start, r->end - r->start);
-+ if (!lp->rx_dma_regs) {
-+ ERR("Can't remap Rx DMA registers\n");
-+ retval = -ENXIO;
-+ goto probe_err_out;
-+ }
-+
-+ r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_tx");
-+ lp->tx_dma_regs = ioremap_nocache(r->start, r->end - r->start);
-+ if (!lp->tx_dma_regs) {
-+ ERR("Can't remap Tx DMA registers\n");
-+ retval = -ENXIO;
-+ goto probe_err_out;
-+ }
-+
-+#ifdef RC32434_PROC_DEBUG
-+ lp->ps = create_proc_read_entry (bif->name, 0, proc_net,
-+ rc32434_read_proc, dev);
-+#endif
-+
-+ lp->td_ring = (DMAD_t)kmalloc(TD_RING_SIZE + RD_RING_SIZE, GFP_KERNEL);
-+ if (!lp->td_ring) {
-+ ERR("Can't allocate descriptors\n");
-+ retval = -ENOMEM;
-+ goto probe_err_out;
-+ }
-+
-+ dma_cache_inv((unsigned long)(lp->td_ring), TD_RING_SIZE + RD_RING_SIZE);
-+
-+ /* now convert TD_RING pointer to KSEG1 */
-+ lp->td_ring = (DMAD_t )KSEG1ADDR(lp->td_ring);
-+ lp->rd_ring = &lp->td_ring[RC32434_NUM_TDS];
-+
-+
-+ spin_lock_init(&lp->lock);
-+
-+ /* just use the rx dma irq */
-+ dev->irq = lp->rx_irq;
-+
-+ dev->priv = lp;
-+
-+ dev->open = rc32434_open;
-+ dev->stop = rc32434_close;
-+ dev->hard_start_xmit = rc32434_send_packet;
-+ dev->get_stats = rc32434_get_stats;
-+ dev->set_multicast_list = &rc32434_multicast_list;
-+ dev->tx_timeout = rc32434_tx_timeout;
-+ dev->watchdog_timeo = RC32434_TX_TIMEOUT;
-+
-+#ifdef CONFIG_IDT_USE_NAPI
-+ dev->poll = rc32434_poll;
-+ dev->weight = 64;
-+ printk("Using NAPI with weight %d\n",dev->weight);
-+#else
-+ lp->rx_tasklet = kmalloc(sizeof(struct tasklet_struct), GFP_KERNEL);
-+ tasklet_init(lp->rx_tasklet, rc32434_rx_tasklet, (unsigned long)dev);
-+#endif
-+ lp->tx_tasklet = kmalloc(sizeof(struct tasklet_struct), GFP_KERNEL);
-+ tasklet_init(lp->tx_tasklet, rc32434_tx_tasklet, (unsigned long)dev);
-+
-+ if ((err = register_netdev(dev))) {
-+ printk(KERN_ERR "rc32434 ethernet. Cannot register net device %d\n", err);
-+ free_netdev(dev);
-+ retval = -EINVAL;
-+ goto probe_err_out;
-+ }
-+
-+ INFO("Rx IRQ %d, Tx IRQ %d, ", lp->rx_irq, lp->tx_irq);
-+ for (i = 0; i < 6; i++) {
-+ printk("%2.2x", dev->dev_addr[i]);
-+ if (i<5)
-+ printk(":");
-+ }
-+ printk("\n");
-+
-+ return 0;
-+
-+ probe_err_out:
-+ rc32434_cleanup_module();
-+ ERR(" failed. Returns %d\n", retval);
-+ return retval;
-+
-+}
-+
-+static int rc32434_remove(struct platform_device *pdev)
-+{
-+ struct korina_device *bif = (struct korina_device *) pdev->dev.platform_data;
-+
-+ if (bif->dev != NULL) {
-+ struct rc32434_local *lp = (struct rc32434_local *)bif->dev->priv;
-+ if (lp != NULL) {
-+ if (lp->eth_regs)
-+ iounmap((void*)lp->eth_regs);
-+ if (lp->rx_dma_regs)
-+ iounmap((void*)lp->rx_dma_regs);
-+ if (lp->tx_dma_regs)
-+ iounmap((void*)lp->tx_dma_regs);
-+ if (lp->td_ring)
-+ kfree((void*)KSEG0ADDR(lp->td_ring));
-+
-+#ifdef RC32434_PROC_DEBUG
-+ if (lp->ps) {
-+ remove_proc_entry(bif->name, proc_net);
-+ }
-+#endif
-+ kfree(lp);
-+ }
-+
-+ platform_set_drvdata(pdev, NULL);
-+ unregister_netdev(bif->dev);
-+ free_netdev(bif->dev);
-+ kfree(bif->dev);
-+ }
-+ return 0;
-+}
-+
-+
-+static int rc32434_open(struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+
-+ /* Initialize */
-+ if (rc32434_init(dev)) {
-+ ERR("Error: cannot open the Ethernet device\n");
-+ return -EAGAIN;
-+ }
-+
-+ /* Install the interrupt handler that handles the Done Finished Ovr and Und Events */
-+ if (request_irq(lp->rx_irq, &rc32434_rx_dma_interrupt,
-+ SA_SHIRQ | SA_INTERRUPT,
-+ "Korina ethernet Rx", dev)) {
-+ ERR(": unable to get Rx DMA IRQ %d\n",
-+ lp->rx_irq);
-+ return -EAGAIN;
-+ }
-+ if (request_irq(lp->tx_irq, &rc32434_tx_dma_interrupt,
-+ SA_SHIRQ | SA_INTERRUPT,
-+ "Korina ethernet Tx", dev)) {
-+ ERR(": unable to get Tx DMA IRQ %d\n",
-+ lp->tx_irq);
-+ free_irq(lp->rx_irq, dev);
-+ return -EAGAIN;
-+ }
-+
-+#ifdef RC32434_REVISION
-+ /* Install handler for overrun error. */
-+ if (request_irq(lp->ovr_irq, &rc32434_ovr_interrupt,
-+ SA_SHIRQ | SA_INTERRUPT,
-+ "Ethernet Overflow", dev)) {
-+ ERR(": unable to get OVR IRQ %d\n",
-+ lp->ovr_irq);
-+ free_irq(lp->rx_irq, dev);
-+ free_irq(lp->tx_irq, dev);
-+ return -EAGAIN;
-+ }
-+#endif
-+
-+ /* Install handler for underflow error. */
-+ if (request_irq(lp->und_irq, &rc32434_und_interrupt,
-+ SA_SHIRQ | SA_INTERRUPT,
-+ "Ethernet Underflow", dev)) {
-+ ERR(": unable to get UND IRQ %d\n",
-+ lp->und_irq);
-+ free_irq(lp->rx_irq, dev);
-+ free_irq(lp->tx_irq, dev);
-+#ifdef RC32434_REVISION
-+ free_irq(lp->ovr_irq, dev);
-+#endif
-+ return -EAGAIN;
-+ }
-+
-+
-+ return 0;
-+}
-+
-+
-+
-+
-+static int rc32434_close(struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ u32 tmp;
-+
-+ /* Disable interrupts */
-+ disable_irq(lp->rx_irq);
-+ disable_irq(lp->tx_irq);
-+#ifdef RC32434_REVISION
-+ disable_irq(lp->ovr_irq);
-+#endif
-+ disable_irq(lp->und_irq);
-+
-+ tmp = __raw_readl(&lp->tx_dma_regs->dmasm);
-+ tmp = tmp | DMASM_f_m | DMASM_e_m;
-+ __raw_writel(tmp, &lp->tx_dma_regs->dmasm);
-+
-+ tmp = __raw_readl(&lp->rx_dma_regs->dmasm);
-+ tmp = tmp | DMASM_d_m | DMASM_h_m | DMASM_e_m;
-+ __raw_writel(tmp, &lp->rx_dma_regs->dmasm);
-+
-+ free_irq(lp->rx_irq, dev);
-+ free_irq(lp->tx_irq, dev);
-+#ifdef RC32434_REVISION
-+ free_irq(lp->ovr_irq, dev);
-+#endif
-+ free_irq(lp->und_irq, dev);
-+ return 0;
-+}
-+
-+
-+/* transmit packet */
-+static int rc32434_send_packet(struct sk_buff *skb, struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ unsigned long flags;
-+ u32 length;
-+ DMAD_t td;
-+
-+
-+ spin_lock_irqsave(&lp->lock, flags);
-+
-+ td = &lp->td_ring[lp->tx_chain_tail];
-+
-+ /* stop queue when full, drop pkts if queue already full */
-+ if(lp->tx_count >= (RC32434_NUM_TDS - 2)) {
-+ lp->tx_full = 1;
-+
-+ if(lp->tx_count == (RC32434_NUM_TDS - 2)) {
-+ netif_stop_queue(dev);
-+ }
-+ else {
-+ lp->stats.tx_dropped++;
-+ dev_kfree_skb_any(skb);
-+ spin_unlock_irqrestore(&lp->lock, flags);
-+ return 1;
-+ }
-+ }
-+
-+ lp->tx_count ++;
-+
-+ lp->tx_skb[lp->tx_chain_tail] = skb;
-+
-+ length = skb->len;
-+
-+ /* Setup the transmit descriptor. */
-+ td->ca = CPHYSADDR(skb->data);
-+
-+ if(__raw_readl(&(lp->tx_dma_regs->dmandptr)) == 0) {
-+ if( lp->tx_chain_status == empty ) {
-+ td->control = DMA_COUNT(length) |DMAD_cof_m |DMAD_iof_m; /* Update tail */
-+ lp->tx_chain_tail = (lp->tx_chain_tail + 1) & RC32434_TDS_MASK; /* Move tail */
-+ __raw_writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), &(lp->tx_dma_regs->dmandptr)); /* Write to NDPTR */
-+ lp->tx_chain_head = lp->tx_chain_tail; /* Move head to tail */
-+ }
-+ else {
-+ td->control = DMA_COUNT(length) |DMAD_cof_m|DMAD_iof_m; /* Update tail */
-+ lp->td_ring[(lp->tx_chain_tail-1)& RC32434_TDS_MASK].control &= ~(DMAD_cof_m); /* Link to prev */
-+ lp->td_ring[(lp->tx_chain_tail-1)& RC32434_TDS_MASK].link = CPHYSADDR(td); /* Link to prev */
-+ lp->tx_chain_tail = (lp->tx_chain_tail + 1) & RC32434_TDS_MASK; /* Move tail */
-+ __raw_writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), &(lp->tx_dma_regs->dmandptr)); /* Write to NDPTR */
-+ lp->tx_chain_head = lp->tx_chain_tail; /* Move head to tail */
-+ lp->tx_chain_status = empty;
-+ }
-+ }
-+ else {
-+ if( lp->tx_chain_status == empty ) {
-+ td->control = DMA_COUNT(length) |DMAD_cof_m |DMAD_iof_m; /* Update tail */
-+ lp->tx_chain_tail = (lp->tx_chain_tail + 1) & RC32434_TDS_MASK; /* Move tail */
-+ lp->tx_chain_status = filled;
-+ }
-+ else {
-+ td->control = DMA_COUNT(length) |DMAD_cof_m |DMAD_iof_m; /* Update tail */
-+ lp->td_ring[(lp->tx_chain_tail-1)& RC32434_TDS_MASK].control &= ~(DMAD_cof_m); /* Link to prev */
-+ lp->td_ring[(lp->tx_chain_tail-1)& RC32434_TDS_MASK].link = CPHYSADDR(td); /* Link to prev */
-+ lp->tx_chain_tail = (lp->tx_chain_tail + 1) & RC32434_TDS_MASK; /* Move tail */
-+ }
-+ }
-+
-+ dev->trans_start = jiffies;
-+
-+ spin_unlock_irqrestore(&lp->lock, flags);
-+
-+ return 0;
-+}
-+
-+
-+/* Ethernet MII-PHY Handler */
-+static void rc32434_mii_handler(unsigned long data)
-+{
-+ struct net_device *dev = (struct net_device *)data;
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ unsigned long flags;
-+ unsigned long duplex_status;
-+ int port_addr = (lp->rx_irq == 0x2c? 1:0) << 8;
-+
-+ spin_lock_irqsave(&lp->lock, flags);
-+
-+ /* Two ports are using the same MII, the difference is the PHY address */
-+ __raw_writel(0, &rc32434_eth0_regs->miimcfg);
-+ __raw_writel(0, &rc32434_eth0_regs->miimcmd);
-+ __raw_writel(port_addr |0x05, &rc32434_eth0_regs->miimaddr);
-+ __raw_writel(MIIMCMD_scn_m, &rc32434_eth0_regs->miimcmd);
-+ while(__raw_readl(&rc32434_eth0_regs->miimind) & MIIMIND_nv_m);
-+
-+ ERR("irq:%x port_addr:%x RDD:%x\n",
-+ lp->rx_irq, port_addr, __raw_readl(&rc32434_eth0_regs->miimrdd));
-+ duplex_status = (__raw_readl(&rc32434_eth0_regs->miimrdd) & 0x140)? ETHMAC2_fd_m: 0;
-+ if(duplex_status != lp->duplex_mode) {
-+ ERR("The MII-PHY is Auto-negotiated to %s-Duplex mode for Eth-%x\n", duplex_status? "Full":"Half", lp->rx_irq == 0x2c? 1:0);
-+ lp->duplex_mode = duplex_status;
-+ rc32434_restart(dev);
-+ }
-+
-+ lp->mii_phy_timer.expires = jiffies + 10 * HZ;
-+ add_timer(&lp->mii_phy_timer);
-+
-+ spin_unlock_irqrestore(&lp->lock, flags);
-+
-+}
-+
-+#ifdef RC32434_REVISION
-+/* Ethernet Rx Overflow interrupt */
-+static irqreturn_t
-+rc32434_ovr_interrupt(int irq, void *dev_id)
-+{
-+ struct net_device *dev = (struct net_device *)dev_id;
-+ struct rc32434_local *lp;
-+ unsigned int ovr;
-+ irqreturn_t retval = IRQ_NONE;
-+
-+ ASSERT(dev != NULL);
-+
-+ lp = (struct rc32434_local *)dev->priv;
-+ spin_lock(&lp->lock);
-+ ovr = __raw_readl(&lp->eth_regs->ethintfc);
-+
-+ if(ovr & ETHINTFC_ovr_m) {
-+ netif_stop_queue(dev);
-+
-+ /* clear OVR bit */
-+ __raw_writel((ovr & ~ETHINTFC_ovr_m), &lp->eth_regs->ethintfc);
-+
-+ /* Restart interface */
-+ rc32434_restart(dev);
-+ retval = IRQ_HANDLED;
-+ }
-+ spin_unlock(&lp->lock);
-+
-+ return retval;
-+}
-+
-+#endif
-+
-+
-+/* Ethernet Tx Underflow interrupt */
-+static irqreturn_t
-+rc32434_und_interrupt(int irq, void *dev_id)
-+{
-+ struct net_device *dev = (struct net_device *)dev_id;
-+ struct rc32434_local *lp;
-+ unsigned int und;
-+ irqreturn_t retval = IRQ_NONE;
-+
-+ ASSERT(dev != NULL);
-+
-+ lp = (struct rc32434_local *)dev->priv;
-+
-+ spin_lock(&lp->lock);
-+
-+ und = __raw_readl(&lp->eth_regs->ethintfc);
-+
-+ if(und & ETHINTFC_und_m) {
-+ netif_stop_queue(dev);
-+
-+ __raw_writel((und & ~ETHINTFC_und_m), &lp->eth_regs->ethintfc);
-+
-+ /* Restart interface */
-+ rc32434_restart(dev);
-+ retval = IRQ_HANDLED;
-+ }
-+
-+ spin_unlock(&lp->lock);
-+
-+ return retval;
-+}
-+
-+
-+/* Ethernet Rx DMA interrupt */
-+static irqreturn_t
-+rc32434_rx_dma_interrupt(int irq, void *dev_id)
-+{
-+ struct net_device *dev = (struct net_device *)dev_id;
-+ struct rc32434_local* lp;
-+ volatile u32 dmas,dmasm;
-+ irqreturn_t retval;
-+
-+ ASSERT(dev != NULL);
-+
-+ lp = (struct rc32434_local *)dev->priv;
-+
-+ spin_lock(&lp->lock);
-+ dmas = __raw_readl(&lp->rx_dma_regs->dmas);
-+ if(dmas & (DMAS_d_m|DMAS_h_m|DMAS_e_m)) {
-+ /* Mask D H E bit in Rx DMA */
-+ dmasm = __raw_readl(&lp->rx_dma_regs->dmasm);
-+ __raw_writel(dmasm | (DMASM_d_m | DMASM_h_m | DMASM_e_m), &lp->rx_dma_regs->dmasm);
-+#ifdef CONFIG_IDT_USE_NAPI
-+ if(netif_rx_schedule_prep(dev))
-+ __netif_rx_schedule(dev);
-+#else
-+ tasklet_hi_schedule(lp->rx_tasklet);
-+#endif
-+
-+ if (dmas & DMAS_e_m)
-+ ERR(": DMA error\n");
-+
-+ retval = IRQ_HANDLED;
-+ }
-+ else
-+ retval = IRQ_NONE;
-+
-+ spin_unlock(&lp->lock);
-+ return retval;
-+}
-+
-+#ifdef CONFIG_IDT_USE_NAPI
-+static int rc32434_poll(struct net_device *rx_data_dev, int *budget)
-+#else
-+static void rc32434_rx_tasklet(unsigned long rx_data_dev)
-+#endif
-+{
-+ struct net_device *dev = (struct net_device *)rx_data_dev;
-+ struct rc32434_local* lp = netdev_priv(dev);
-+ volatile DMAD_t rd = &lp->rd_ring[lp->rx_next_done];
-+ struct sk_buff *skb, *skb_new;
-+ u8* pkt_buf;
-+ u32 devcs, count, pkt_len, pktuncrc_len;
-+ volatile u32 dmas;
-+#ifdef CONFIG_IDT_USE_NAPI
-+ u32 received = 0;
-+ int rx_work_limit = min(*budget,dev->quota);
-+#else
-+ unsigned long flags;
-+ spin_lock_irqsave(&lp->lock, flags);
-+#endif
-+
-+ while ( (count = RC32434_RBSIZE - (u32)DMA_COUNT(rd->control)) != 0) {
-+#ifdef CONFIG_IDT_USE_NAPI
-+ if(--rx_work_limit <0)
-+ {
-+ break;
-+ }
-+#endif
-+ /* init the var. used for the later operations within the while loop */
-+ skb_new = NULL;
-+ devcs = rd->devcs;
-+ pkt_len = RCVPKT_LENGTH(devcs);
-+ skb = lp->rx_skb[lp->rx_next_done];
-+
-+ if (count < 64) {
-+ lp->stats.rx_errors++;
-+ lp->stats.rx_dropped++;
-+ }
-+ else if ((devcs & ( ETHRX_ld_m)) != ETHRX_ld_m) {
-+ /* check that this is a whole packet */
-+ /* WARNING: DMA_FD bit incorrectly set in Rc32434 (errata ref #077) */
-+ lp->stats.rx_errors++;
-+ lp->stats.rx_dropped++;
-+ }
-+ else if ( (devcs & ETHRX_rok_m) ) {
-+
-+ {
-+ /* must be the (first and) last descriptor then */
-+ pkt_buf = (u8*)lp->rx_skb[lp->rx_next_done]->data;
-+
-+ pktuncrc_len = pkt_len - 4;
-+ /* invalidate the cache */
-+ dma_cache_inv((unsigned long)pkt_buf, pktuncrc_len);
-+
-+ /* Malloc up new buffer. */
-+ skb_new = dev_alloc_skb(RC32434_RBSIZE + 2);
-+
-+ if (skb_new != NULL){
-+ /* Make room */
-+ skb_put(skb, pktuncrc_len);
-+
-+ skb->protocol = eth_type_trans(skb, dev);
-+
-+ /* pass the packet to upper layers */
-+#ifdef CONFIG_IDT_USE_NAPI
-+ netif_receive_skb(skb);
-+#else
-+ netif_rx(skb);
-+#endif
-+
-+ dev->last_rx = jiffies;
-+ lp->stats.rx_packets++;
-+ lp->stats.rx_bytes += pktuncrc_len;
-+
-+ if (IS_RCV_MP(devcs))
-+ lp->stats.multicast++;
-+
-+ /* 16 bit align */
-+ skb_reserve(skb_new, 2);
-+
-+ skb_new->dev = dev;
-+ lp->rx_skb[lp->rx_next_done] = skb_new;
-+ }
-+ else {
-+ ERR("no memory, dropping rx packet.\n");
-+ lp->stats.rx_errors++;
-+ lp->stats.rx_dropped++;
-+ }
-+ }
-+
-+ }
-+ else {
-+ /* This should only happen if we enable accepting broken packets */
-+ lp->stats.rx_errors++;
-+ lp->stats.rx_dropped++;
-+
-+ /* add statistics counters */
-+ if (IS_RCV_CRC_ERR(devcs)) {
-+ DBG(2, "RX CRC error\n");
-+ lp->stats.rx_crc_errors++;
-+ }
-+ else if (IS_RCV_LOR_ERR(devcs)) {
-+ DBG(2, "RX LOR error\n");
-+ lp->stats.rx_length_errors++;
-+ }
-+ else if (IS_RCV_LE_ERR(devcs)) {
-+ DBG(2, "RX LE error\n");
-+ lp->stats.rx_length_errors++;
-+ }
-+ else if (IS_RCV_OVR_ERR(devcs)) {
-+ lp->stats.rx_over_errors++;
-+ }
-+ else if (IS_RCV_CV_ERR(devcs)) {
-+ /* code violation */
-+ DBG(2, "RX CV error\n");
-+ lp->stats.rx_frame_errors++;
-+ }
-+ else if (IS_RCV_CES_ERR(devcs)) {
-+ DBG(2, "RX Preamble error\n");
-+ }
-+ }
-+
-+ rd->devcs = 0;
-+
-+ /* restore descriptor's curr_addr */
-+ if(skb_new)
-+ rd->ca = CPHYSADDR(skb_new->data);
-+ else
-+ rd->ca = CPHYSADDR(skb->data);
-+
-+ rd->control = DMA_COUNT(RC32434_RBSIZE) |DMAD_cod_m |DMAD_iod_m;
-+ lp->rd_ring[(lp->rx_next_done-1)& RC32434_RDS_MASK].control &= ~(DMAD_cod_m);
-+
-+ lp->rx_next_done = (lp->rx_next_done + 1) & RC32434_RDS_MASK;
-+ rd = &lp->rd_ring[lp->rx_next_done];
-+ __raw_writel( ~DMAS_d_m, &lp->rx_dma_regs->dmas);
-+ }
-+#ifdef CONFIG_IDT_USE_NAPI
-+ dev->quota -= received;
-+ *budget =- received;
-+ if(rx_work_limit < 0)
-+ goto not_done;
-+#endif
-+
-+ dmas = __raw_readl(&lp->rx_dma_regs->dmas);
-+
-+ if(dmas & DMAS_h_m) {
-+ __raw_writel( ~(DMAS_h_m | DMAS_e_m), &lp->rx_dma_regs->dmas);
-+#ifdef RC32434_PROC_DEBUG
-+ lp->dma_halt_cnt++;
-+#endif
-+ rd->devcs = 0;
-+ skb = lp->rx_skb[lp->rx_next_done];
-+ rd->ca = CPHYSADDR(skb->data);
-+ rc32434_chain_rx(lp,rd);
-+ }
-+
-+#ifdef CONFIG_IDT_USE_NAPI
-+ netif_rx_complete(dev);
-+#endif
-+ /* Enable D H E bit in Rx DMA */
-+ __raw_writel(__raw_readl(&lp->rx_dma_regs->dmasm) & ~(DMASM_d_m | DMASM_h_m |DMASM_e_m), &lp->rx_dma_regs->dmasm);
-+#ifdef CONFIG_IDT_USE_NAPI
-+ return 0;
-+ not_done:
-+ return 1;
-+#else
-+ spin_unlock_irqrestore(&lp->lock, flags);
-+ return;
-+#endif
-+
-+
-+}
-+
-+
-+
-+/* Ethernet Tx DMA interrupt */
-+static irqreturn_t
-+rc32434_tx_dma_interrupt(int irq, void *dev_id)
-+{
-+ struct net_device *dev = (struct net_device *)dev_id;
-+ struct rc32434_local *lp;
-+ volatile u32 dmas,dmasm;
-+ irqreturn_t retval;
-+
-+ ASSERT(dev != NULL);
-+
-+ lp = (struct rc32434_local *)dev->priv;
-+
-+ spin_lock(&lp->lock);
-+
-+ dmas = __raw_readl(&lp->tx_dma_regs->dmas);
-+
-+ if (dmas & (DMAS_f_m | DMAS_e_m)) {
-+ dmasm = __raw_readl(&lp->tx_dma_regs->dmasm);
-+ /* Mask F E bit in Tx DMA */
-+ __raw_writel(dmasm | (DMASM_f_m | DMASM_e_m), &lp->tx_dma_regs->dmasm);
-+
-+ tasklet_hi_schedule(lp->tx_tasklet);
-+
-+ if(lp->tx_chain_status == filled && (__raw_readl(&(lp->tx_dma_regs->dmandptr)) == 0)) {
-+ __raw_writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]), &(lp->tx_dma_regs->dmandptr));
-+ lp->tx_chain_status = empty;
-+ lp->tx_chain_head = lp->tx_chain_tail;
-+ dev->trans_start = jiffies;
-+ }
-+
-+ if (dmas & DMAS_e_m)
-+ ERR(": DMA error\n");
-+
-+ retval = IRQ_HANDLED;
-+ }
-+ else
-+ retval = IRQ_NONE;
-+
-+ spin_unlock(&lp->lock);
-+
-+ return retval;
-+}
-+
-+
-+static void rc32434_tx_tasklet(unsigned long tx_data_dev)
-+{
-+ struct net_device *dev = (struct net_device *)tx_data_dev;
-+ struct rc32434_local* lp = (struct rc32434_local *)dev->priv;
-+ volatile DMAD_t td = &lp->td_ring[lp->tx_next_done];
-+ u32 devcs;
-+ unsigned long flags;
-+ volatile u32 dmas;
-+
-+ spin_lock_irqsave(&lp->lock, flags);
-+
-+ /* process all desc that are done */
-+ while(IS_DMA_FINISHED(td->control)) {
-+ if(lp->tx_full == 1) {
-+ netif_wake_queue(dev);
-+ lp->tx_full = 0;
-+ }
-+
-+ devcs = lp->td_ring[lp->tx_next_done].devcs;
-+ if ((devcs & (ETHTX_fd_m | ETHTX_ld_m)) != (ETHTX_fd_m | ETHTX_ld_m)) {
-+ lp->stats.tx_errors++;
-+ lp->stats.tx_dropped++;
-+
-+ /* should never happen */
-+ DBG(1, __FUNCTION__ ": split tx ignored\n");
-+ }
-+ else if (IS_TX_TOK(devcs)) {
-+ lp->stats.tx_packets++;
-+ }
-+ else {
-+ lp->stats.tx_errors++;
-+ lp->stats.tx_dropped++;
-+
-+ /* underflow */
-+ if (IS_TX_UND_ERR(devcs))
-+ lp->stats.tx_fifo_errors++;
-+
-+ /* oversized frame */
-+ if (IS_TX_OF_ERR(devcs))
-+ lp->stats.tx_aborted_errors++;
-+
-+ /* excessive deferrals */
-+ if (IS_TX_ED_ERR(devcs))
-+ lp->stats.tx_carrier_errors++;
-+
-+ /* collisions: medium busy */
-+ if (IS_TX_EC_ERR(devcs))
-+ lp->stats.collisions++;
-+
-+ /* late collision */
-+ if (IS_TX_LC_ERR(devcs))
-+ lp->stats.tx_window_errors++;
-+
-+ }
-+
-+ /* We must always free the original skb */
-+ if (lp->tx_skb[lp->tx_next_done] != NULL) {
-+ dev_kfree_skb_any(lp->tx_skb[lp->tx_next_done]);
-+ lp->tx_skb[lp->tx_next_done] = NULL;
-+ }
-+
-+ lp->td_ring[lp->tx_next_done].control = DMAD_iof_m;
-+ lp->td_ring[lp->tx_next_done].devcs = ETHTX_fd_m | ETHTX_ld_m;
-+ lp->td_ring[lp->tx_next_done].link = 0;
-+ lp->td_ring[lp->tx_next_done].ca = 0;
-+ lp->tx_count --;
-+
-+ /* go on to next transmission */
-+ lp->tx_next_done = (lp->tx_next_done + 1) & RC32434_TDS_MASK;
-+ td = &lp->td_ring[lp->tx_next_done];
-+
-+ }
-+
-+ dmas = __raw_readl(&lp->tx_dma_regs->dmas);
-+ __raw_writel( ~dmas, &lp->tx_dma_regs->dmas);
-+
-+ /* Enable F E bit in Tx DMA */
-+ __raw_writel(__raw_readl(&lp->tx_dma_regs->dmasm) & ~(DMASM_f_m | DMASM_e_m), &lp->tx_dma_regs->dmasm);
-+ spin_unlock_irqrestore(&lp->lock, flags);
-+
-+}
-+
-+
-+static struct net_device_stats * rc32434_get_stats(struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ return &lp->stats;
-+}
-+
-+
-+/*
-+ * Set or clear the multicast filter for this adaptor.
-+ */
-+static void rc32434_multicast_list(struct net_device *dev)
-+{
-+ /* listen to broadcasts always and to treat */
-+ /* IFF bits independantly */
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ unsigned long flags;
-+ u32 recognise = ETHARC_ab_m; /* always accept broadcasts */
-+
-+ if (dev->flags & IFF_PROMISC) /* set promiscuous mode */
-+ recognise |= ETHARC_pro_m;
-+
-+ if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 15))
-+ recognise |= ETHARC_am_m; /* all multicast & bcast */
-+ else if (dev->mc_count > 0) {
-+ DBG(2, __FUNCTION__ ": mc_count %d\n", dev->mc_count);
-+ recognise |= ETHARC_am_m; /* for the time being */
-+ }
-+
-+ spin_lock_irqsave(&lp->lock, flags);
-+ __raw_writel(recognise, &lp->eth_regs->etharc);
-+ spin_unlock_irqrestore(&lp->lock, flags);
-+}
-+
-+
-+static void rc32434_tx_timeout(struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&lp->lock, flags);
-+ rc32434_restart(dev);
-+ spin_unlock_irqrestore(&lp->lock, flags);
-+
-+}
-+
-+
-+/*
-+ * Initialize the RC32434 ethernet controller.
-+ */
-+static int rc32434_init(struct net_device *dev)
-+{
-+ struct rc32434_local *lp = (struct rc32434_local *)dev->priv;
-+ int i, j;
-+
-+ /* Disable DMA */
-+ rc32434_abort_tx(dev);
-+ rc32434_abort_rx(dev);
-+
-+ /* reset ethernet logic */
-+ __raw_writel(0, &lp->eth_regs->ethintfc);
-+ while((__raw_readl(&lp->eth_regs->ethintfc) & ETHINTFC_rip_m))
-+ dev->trans_start = jiffies;
-+
-+ /* Enable Ethernet Interface */
-+ __raw_writel(ETHINTFC_en_m, &lp->eth_regs->ethintfc);
-+
-+#ifndef CONFIG_IDT_USE_NAPI
-+ tasklet_disable(lp->rx_tasklet);
-+#endif
-+ tasklet_disable(lp->tx_tasklet);
-+
-+ /* Initialize the transmit Descriptors */
-+ for (i = 0; i < RC32434_NUM_TDS; i++) {
-+ lp->td_ring[i].control = DMAD_iof_m;
-+ lp->td_ring[i].devcs = ETHTX_fd_m | ETHTX_ld_m;
-+ lp->td_ring[i].ca = 0;
-+ lp->td_ring[i].link = 0;
-+ if (lp->tx_skb[i] != NULL) {
-+ dev_kfree_skb_any(lp->tx_skb[i]);
-+ lp->tx_skb[i] = NULL;
-+ }
-+ }
-+ lp->tx_next_done = lp->tx_chain_head = lp->tx_chain_tail = lp->tx_full = lp->tx_count = 0;
-+ lp-> tx_chain_status = empty;
-+
-+ /*
-+ * Initialize the receive descriptors so that they
-+ * become a circular linked list, ie. let the last
-+ * descriptor point to the first again.
-+ */
-+ for (i=0; i<RC32434_NUM_RDS; i++) {
-+ struct sk_buff *skb = lp->rx_skb[i];
-+
-+ if (lp->rx_skb[i] == NULL) {
-+ skb = dev_alloc_skb(RC32434_RBSIZE + 2);
-+ if (skb == NULL) {
-+ ERR("No memory in the system\n");
-+ for (j = 0; j < RC32434_NUM_RDS; j ++)
-+ if (lp->rx_skb[j] != NULL)
-+ dev_kfree_skb_any(lp->rx_skb[j]);
-+
-+ return 1;
-+ }
-+ else {
-+ skb->dev = dev;
-+ skb_reserve(skb, 2);
-+ lp->rx_skb[i] = skb;
-+ lp->rd_ring[i].ca = CPHYSADDR(skb->data);
-+
-+ }
-+ }
-+ lp->rd_ring[i].control = DMAD_iod_m | DMA_COUNT(RC32434_RBSIZE);
-+ lp->rd_ring[i].devcs = 0;
-+ lp->rd_ring[i].ca = CPHYSADDR(skb->data);
-+ lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[i+1]);
-+
-+ }
-+ /* loop back */
-+ lp->rd_ring[RC32434_NUM_RDS-1].link = CPHYSADDR(&lp->rd_ring[0]);
-+ lp->rx_next_done = 0;
-+
-+ lp->rd_ring[RC32434_NUM_RDS-1].control |= DMAD_cod_m;
-+ lp->rx_chain_head = 0;
-+ lp->rx_chain_tail = 0;
-+ lp->rx_chain_status = empty;
-+
-+ __raw_writel(0, &lp->rx_dma_regs->dmas);
-+ /* Start Rx DMA */
-+ rc32434_start_rx(lp, &lp->rd_ring[0]);
-+
-+ /* Enable F E bit in Tx DMA */
-+ __raw_writel(__raw_readl(&lp->tx_dma_regs->dmasm) & ~(DMASM_f_m | DMASM_e_m), &lp->tx_dma_regs->dmasm);
-+ /* Enable D H E bit in Rx DMA */
-+ __raw_writel(__raw_readl(&lp->rx_dma_regs->dmasm) & ~(DMASM_d_m | DMASM_h_m | DMASM_e_m), &lp->rx_dma_regs->dmasm);
-+
-+ /* Accept only packets destined for this Ethernet device address */
-+ __raw_writel(ETHARC_ab_m, &lp->eth_regs->etharc);
-+
-+ /* Set all Ether station address registers to their initial values */
-+ __raw_writel(STATION_ADDRESS_LOW(dev), &lp->eth_regs->ethsal0);
-+ __raw_writel(STATION_ADDRESS_HIGH(dev), &lp->eth_regs->ethsah0);
-+
-+ __raw_writel(STATION_ADDRESS_LOW(dev), &lp->eth_regs->ethsal1);
-+ __raw_writel(STATION_ADDRESS_HIGH(dev), &lp->eth_regs->ethsah1);
-+
-+ __raw_writel(STATION_ADDRESS_LOW(dev), &lp->eth_regs->ethsal2);
-+ __raw_writel(STATION_ADDRESS_HIGH(dev), &lp->eth_regs->ethsah2);
-+
-+ __raw_writel(STATION_ADDRESS_LOW(dev), &lp->eth_regs->ethsal3);
-+ __raw_writel(STATION_ADDRESS_HIGH(dev), &lp->eth_regs->ethsah3);
-+
-+
-+ /* Frame Length Checking, Pad Enable, CRC Enable, Full Duplex set */
-+ __raw_writel(ETHMAC2_pe_m | ETHMAC2_cen_m | ETHMAC2_fd_m, &lp->eth_regs->ethmac2);
-+ //ETHMAC2_flc_m ETHMAC2_fd_m lp->duplex_mode
-+
-+ /* Back to back inter-packet-gap */
-+ __raw_writel(0x15, &lp->eth_regs->ethipgt);
-+ /* Non - Back to back inter-packet-gap */
-+ __raw_writel(0x12, &lp->eth_regs->ethipgr);
-+
-+ /* Management Clock Prescaler Divisor */
-+ /* Clock independent setting */
-+ __raw_writel(((idt_cpu_freq)/MII_CLOCK+1) & ~1,
-+ &lp->eth_regs->ethmcp);
-+
-+ /* don't transmit until fifo contains 48b */
-+ __raw_writel(48, &lp->eth_regs->ethfifott);
-+
-+ __raw_writel(ETHMAC1_re_m, &lp->eth_regs->ethmac1);
-+
-+#ifndef CONFIG_IDT_USE_NAPI
-+ tasklet_enable(lp->rx_tasklet);
-+#endif
-+ tasklet_enable(lp->tx_tasklet);
-+
-+ netif_start_queue(dev);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver korina_driver = {
-+ .driver.name = "korina",
-+ .probe = rc32434_probe,
-+ .remove = rc32434_remove,
-+};
-+
-+static int __init rc32434_init_module(void)
-+{
-+ return platform_driver_register(&korina_driver);
-+}
-+
-+static void rc32434_cleanup_module(void)
-+{
-+ return platform_driver_unregister(&korina_driver);
-+}
-+
-+module_init(rc32434_init_module);
-+module_exit(rc32434_cleanup_module);
projects / openwrt.git / blobdiff