diff options
Diffstat (limited to 'target/linux/rb532-2.6/patches/110-korina_ethernet.patch')
| -rw-r--r-- | target/linux/rb532-2.6/patches/110-korina_ethernet.patch | 1375 |
1 files changed, 1375 insertions, 0 deletions
diff --git a/target/linux/rb532-2.6/patches/110-korina_ethernet.patch b/target/linux/rb532-2.6/patches/110-korina_ethernet.patch new file mode 100644 index 0000000000..723bc4ff10 --- /dev/null +++ b/target/linux/rb532-2.6/patches/110-korina_ethernet.patch @@ -0,0 +1,1375 @@ +diff -urN linux.old/drivers/net/Kconfig linux.dev/drivers/net/Kconfig +--- linux.old/drivers/net/Kconfig 2006-06-08 20:21:20.000000000 +0200 ++++ linux.dev/drivers/net/Kconfig 2006-06-08 20:19:40.000000000 +0200 +@@ -310,6 +310,13 @@ + + source "drivers/net/arm/Kconfig" + ++config KORINA ++ tristate "Korina Local Ethernet support" ++ depends on NET_ETHERNET && ( IDT_EB434 || MIKROTIK_RB500) ++ help ++ IDT RC32434 has one local ethernet port. Say Y here to enable it. ++ To compile this driver as a module, choose M here. ++ + config MACE + tristate "MACE (Power Mac ethernet) support" + depends on NET_ETHERNET && PPC_PMAC && PPC32 +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 2006-06-09 00:48:40.000000000 +0200 +@@ -0,0 +1,1159 @@ ++/************************************************************************** ++ * ++ * BRIEF MODULE DESCRIPTION ++ * Driver for the IDT RC32434 on-chip ethernet controller. ++ * ++ * Copyright 2004 IDT Inc. (rischelp@idt.com) ++ * ++ * 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/config.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 pt_regs * regs) ++{ ++ 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 pt_regs * regs) ++{ ++ 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 pt_regs * regs) ++{ ++ 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 pt_regs * regs) ++{ ++ 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); +diff -urN linux.old/drivers/net/Makefile linux.dev/drivers/net/Makefile +--- linux.old/drivers/net/Makefile 2006-06-08 20:21:20.000000000 +0200 ++++ linux.dev/drivers/net/Makefile 2006-06-08 20:19:40.000000000 +0200 +@@ -23,6 +23,8 @@ + # + obj-$(CONFIG_PLIP) += plip.o + ++obj-$(CONFIG_KORINA) += korina.o ++ + obj-$(CONFIG_ROADRUNNER) += rrunner.o + + obj-$(CONFIG_HAPPYMEAL) += sunhme.o +diff -urN linux.old/drivers/net/rc32434_eth.h linux.dev/drivers/net/rc32434_eth.h +--- linux.old/drivers/net/rc32434_eth.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/drivers/net/rc32434_eth.h 2006-06-08 21:57:12.000000000 +0200 +@@ -0,0 +1,178 @@ ++/************************************************************************** ++ * ++ * BRIEF MODULE DESCRIPTION ++ * Definitions for IDT RC32434 on-chip ethernet controller. ++ * ++ * Copyright 2004 IDT Inc. (rischelp@idt.com) ++ * ++ * 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 ++ * ++ * Initial Release ++ * ++ * Aug 2004 ++ * ++ * Added NAPI ++ * ++ ************************************************************************** ++ */ ++ ++ ++#include <asm/rc32434/rc32434.h> ++#include <asm/rc32434/dma_v.h> ++#include <asm/rc32434/eth_v.h> ++ ++#define CONFIG_IDT_USE_NAPI 1 ++#define RC32434_DEBUG 2 ++//#define RC32434_PROC_DEBUG ++#undef RC32434_DEBUG ++ ++#ifdef RC32434_DEBUG ++ ++/* use 0 for production, 1 for verification, >2 for debug */ ++static int rc32434_debug = RC32434_DEBUG; ++#define ASSERT(expr) \ ++ if(!(expr)) { \ ++ printk( "Assertion failed! %s,%s,%s,line=%d\n", \ ++ #expr,__FILE__,__FUNCTION__,__LINE__); } ++#define DBG(lvl, format, arg...) if (rc32434_debug > lvl) printk(KERN_INFO "%s: " format, dev->name , ## arg) ++#else ++#define ASSERT(expr) do {} while (0) ++#define DBG(lvl, format, arg...) do {} while (0) ++#endif ++ ++#define INFO(format, arg...) printk(KERN_INFO "%s: " format, dev->name , ## arg) ++#define ERR(format, arg...) printk(KERN_ERR "%s: " format, dev->name , ## arg) ++#define WARN(format, arg...) printk(KERN_WARNING "%s: " format, dev->name , ## arg) ++ ++/* the following must be powers of two */ ++#ifdef CONFIG_IDT_USE_NAPI ++#define RC32434_NUM_RDS 64 /* number of receive descriptors */ ++#define RC32434_NUM_TDS 64 /* number of transmit descriptors */ ++#else ++#define RC32434_NUM_RDS 128 /* number of receive descriptors */ ++#define RC32434_NUM_TDS 128 /* number of transmit descriptors */ ++#endif ++ ++#define RC32434_RBSIZE 1536 /* size of one resource buffer = Ether MTU */ ++#define RC32434_RDS_MASK (RC32434_NUM_RDS-1) ++#define RC32434_TDS_MASK (RC32434_NUM_TDS-1) ++#define RD_RING_SIZE (RC32434_NUM_RDS * sizeof(struct DMAD_s)) ++#define TD_RING_SIZE (RC32434_NUM_TDS * sizeof(struct DMAD_s)) ++ ++#define RC32434_TX_TIMEOUT HZ * 100 ++ ++#define rc32434_eth0_regs ((ETH_t)(ETH0_VirtualAddress)) ++#define rc32434_eth1_regs ((ETH_t)(ETH1_VirtualAddress)) ++ ++enum status { filled, empty}; ++#define IS_DMA_FINISHED(X) (((X) & (DMAD_f_m)) != 0) ++#define IS_DMA_DONE(X) (((X) & (DMAD_d_m)) != 0) ++ ++ ++/* Information that need to be kept for each board. */ ++struct rc32434_local { ++ ETH_t eth_regs; ++ DMA_Chan_t rx_dma_regs; ++ DMA_Chan_t tx_dma_regs; ++ volatile DMAD_t td_ring; /* transmit descriptor ring */ ++ volatile DMAD_t rd_ring; /* receive descriptor ring */ ++ ++ struct sk_buff* tx_skb[RC32434_NUM_TDS]; /* skbuffs for pkt to trans */ ++ struct sk_buff* rx_skb[RC32434_NUM_RDS]; /* skbuffs for pkt to trans */ ++ ++#ifndef CONFIG_IDT_USE_NAPI ++ struct tasklet_struct * rx_tasklet; ++#endif ++ struct tasklet_struct * tx_tasklet; ++ ++ int rx_next_done; ++ int rx_chain_head; ++ int rx_chain_tail; ++ enum status rx_chain_status; ++ ++ int tx_next_done; ++ int tx_chain_head; ++ int tx_chain_tail; ++ enum status tx_chain_status; ++ int tx_count; ++ int tx_full; ++ ++ struct timer_list mii_phy_timer; ++ unsigned long duplex_mode; ++ ++ int rx_irq; ++ int tx_irq; ++ int ovr_irq; ++ int und_irq; ++ ++ struct net_device_stats stats; ++ spinlock_t lock; ++ ++ /* debug /proc entry */ ++ struct proc_dir_entry *ps; ++ int dma_halt_cnt; int dma_run_cnt; ++}; ++ ++extern unsigned int idt_cpu_freq; ++ ++/* Index to functions, as function prototypes. */ ++static int rc32434_open(struct net_device *dev); ++static int rc32434_send_packet(struct sk_buff *skb, struct net_device *dev); ++static void rc32434_mii_handler(unsigned long data); ++static irqreturn_t rc32434_und_interrupt(int irq, void *dev_id, struct pt_regs * regs); ++static irqreturn_t rc32434_rx_dma_interrupt(int irq, void *dev_id, struct pt_regs * regs); ++static irqreturn_t rc32434_tx_dma_interrupt(int irq, void *dev_id, struct pt_regs * regs); ++#ifdef RC32434_REVISION ++static irqreturn_t rc32434_ovr_interrupt(int irq, void *dev_id, struct pt_regs * regs); ++#endif ++static int rc32434_close(struct net_device *dev); ++static struct net_device_stats *rc32434_get_stats(struct net_device *dev); ++static void rc32434_multicast_list(struct net_device *dev); ++static int rc32434_init(struct net_device *dev); ++static void rc32434_tx_timeout(struct net_device *dev); ++ ++static void rc32434_tx_tasklet(unsigned long tx_data_dev); ++#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 ++static void rc32434_cleanup_module(void); ++ ++ ++static inline void rc32434_abort_dma(struct net_device *dev, DMA_Chan_t ch) ++{ ++ if (__raw_readl(&ch->dmac) & DMAC_run_m) { ++ __raw_writel(0x10, &ch->dmac); ++ ++ while (!(__raw_readl(&ch->dmas) & DMAS_h_m)) ++ dev->trans_start = jiffies; ++ ++ __raw_writel(0, &ch->dmas); ++ } ++ ++ __raw_writel(0, &ch->dmadptr); ++ __raw_writel(0, &ch->dmandptr); ++} + |