diff options
Diffstat (limited to 'target/linux/adm8668/files/arch/mips/adm8668/net_core.c')
-rw-r--r-- | target/linux/adm8668/files/arch/mips/adm8668/net_core.c | 618 |
1 files changed, 0 insertions, 618 deletions
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/net_core.c b/target/linux/adm8668/files/arch/mips/adm8668/net_core.c deleted file mode 100644 index 3348c224b5..0000000000 --- a/target/linux/adm8668/files/arch/mips/adm8668/net_core.c +++ /dev/null @@ -1,618 +0,0 @@ -/* - * originally drivers/net/tulip_core.c - * Copyright 2000,2001 The Linux Kernel Team - * Written/copyright 1994-2001 by Donald Becker. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - -#define DRV_NAME "tulip" -#define DRV_VERSION "1.1.15-NAPI" /* Keep at least for test */ -#define DRV_RELDATE "Feb 27, 2007" - -#include "net.h" - -static char version[] __devinitdata = - "ADM8668net driver version " DRV_VERSION " (" DRV_RELDATE ")\n"; - -#define MAX_UNITS 2 - -/* - Set the bus performance register. - Typical: Set 16 longword cache alignment, no burst limit. - Cache alignment bits 15:14 Burst length 13:8 - 0000 No alignment 0x00000000 unlimited 0800 8 longwords - 4000 8 longwords 0100 1 longword 1000 16 longwords - 8000 16 longwords 0200 2 longwords 2000 32 longwords - C000 32 longwords 0400 4 longwords - Warning: many older 486 systems are broken and require setting 0x00A04800 - 8 longword cache alignment, 8 longword burst. - ToDo: Non-Intel setting could be better. -*/ - -//static int csr0 = 0x00200000 | 0x4000; -static int csr0 = 0; - -/* Operational parameters that usually are not changed. */ -/* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (4*HZ) - -MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>"); -MODULE_DESCRIPTION("ADM8668 new ethernet driver."); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); - -#ifdef TULIP_DEBUG -int tulip_debug = TULIP_DEBUG; -#else -int tulip_debug = 1; -#endif - -static void tulip_tx_timeout(struct net_device *dev); -static void tulip_init_ring(struct net_device *dev); -static void tulip_free_ring(struct net_device *dev); -static netdev_tx_t tulip_start_xmit(struct sk_buff *skb, - struct net_device *dev); -static int tulip_open(struct net_device *dev); -static int tulip_close(struct net_device *dev); -static void tulip_up(struct net_device *dev); -static void tulip_down(struct net_device *dev); -static struct net_device_stats *tulip_get_stats(struct net_device *dev); -//static int private_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); -static void set_rx_mode(struct net_device *dev); -#ifdef CONFIG_NET_POLL_CONTROLLER -static void poll_tulip(struct net_device *dev); -#endif - -static void tulip_up(struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - - napi_enable(&tp->napi); - - /* Reset the chip, holding bit 0 set at least 50 PCI cycles. */ - iowrite32(0x00000001, ioaddr + CSR0); - - /* Deassert reset. - Wait the specified 50 PCI cycles after a reset by initializing - Tx and Rx queues and the address filter list. */ - iowrite32(tp->csr0, ioaddr + CSR0); - - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: tulip_up(), irq==%d\n", - dev->name, dev->irq); - - iowrite32(tp->rx_ring_dma, ioaddr + CSR3); - iowrite32(tp->tx_ring_dma, ioaddr + CSR4); - tp->cur_rx = tp->cur_tx = 0; - tp->dirty_rx = tp->dirty_tx = 0; - - /* set mac address */ - iowrite32(get_unaligned_le32(dev->dev_addr), ioaddr + 0xA4); - iowrite32(get_unaligned_le16(dev->dev_addr + 4), ioaddr + 0xA8); - iowrite32(0, ioaddr + CSR27); - iowrite32(0, ioaddr + CSR28); - - tp->csr6 = 0; - - /* Enable automatic Tx underrun recovery. */ - iowrite32(ioread32(ioaddr + CSR18) | 1, ioaddr + CSR18); - tp->csr6 = 0x00040000; - - /* Start the chip's Tx to process setup frame. */ - tulip_stop_rxtx(tp); - barrier(); - udelay(5); - iowrite32(tp->csr6 | TxOn, ioaddr + CSR6); - - /* Enable interrupts by setting the interrupt mask. */ - iowrite32(VALID_INTR, ioaddr + CSR5); - iowrite32(VALID_INTR, ioaddr + CSR7); - tulip_start_rxtx(tp); - iowrite32(0, ioaddr + CSR2); /* Rx poll demand */ - - if (tulip_debug > 2) { - printk(KERN_DEBUG "%s: Done tulip_up(), CSR0 %08x, CSR5 %08x CSR6 %08x\n", - dev->name, ioread32(ioaddr + CSR0), - ioread32(ioaddr + CSR5), - ioread32(ioaddr + CSR6)); - } - - init_timer(&tp->oom_timer); - tp->oom_timer.data = (unsigned long)dev; - tp->oom_timer.function = oom_timer; -} - -static int -tulip_open(struct net_device *dev) -{ - int retval; - - tulip_init_ring (dev); - - retval = request_irq(dev->irq, tulip_interrupt, 0, dev->name, dev); - if (retval) - goto free_ring; - - tulip_up (dev); - - netif_start_queue (dev); - - return 0; - -free_ring: - tulip_free_ring (dev); - return retval; -} - - -static void tulip_tx_timeout(struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - unsigned long flags; - - spin_lock_irqsave (&tp->lock, flags); - - dev_warn(&dev->dev, - "Transmit timed out, status %08x, CSR12 %08x, resetting...\n", - ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR12)); - - tulip_tx_timeout_complete(tp, ioaddr); - - spin_unlock_irqrestore (&tp->lock, flags); - dev->trans_start = jiffies; /* prevent tx timeout */ - netif_wake_queue (dev); -} - - -/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static void tulip_init_ring(struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - int i; - - tp->nir = 0; - - for (i = 0; i < RX_RING_SIZE; i++) { - tp->rx_ring[i].status = 0x00000000; - tp->rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ); - tp->rx_ring[i].buffer2 = cpu_to_le32(tp->rx_ring_dma + sizeof(struct tulip_rx_desc) * (i + 1)); - tp->rx_buffers[i].skb = NULL; - tp->rx_buffers[i].mapping = 0; - } - /* Mark the last entry as wrapping the ring. */ - tp->rx_ring[i-1].length = cpu_to_le32(PKT_BUF_SZ | DESC_RING_WRAP); - tp->rx_ring[i-1].buffer2 = cpu_to_le32(tp->rx_ring_dma); - - for (i = 0; i < RX_RING_SIZE; i++) { - dma_addr_t mapping; - /* Note the receive buffer must be longword aligned. - dev_alloc_skb() provides 16 byte alignment. But do *not* - use skb_reserve() to align the IP header! */ - struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ); - tp->rx_buffers[i].skb = skb; - if (skb == NULL) - break; - mapping = dma_map_single(&dev->dev, skb->data, - PKT_BUF_SZ, DMA_FROM_DEVICE); - tp->rx_buffers[i].mapping = mapping; - skb->dev = dev; /* Mark as being used by this device. */ - tp->rx_ring[i].status = cpu_to_le32(DescOwned); /* Owned by Tulip chip */ - tp->rx_ring[i].buffer1 = cpu_to_le32(mapping); - } - tp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); - - /* The Tx buffer descriptor is filled in as needed, but we - do need to clear the ownership bit. */ - for (i = 0; i < TX_RING_SIZE; i++) { - tp->tx_buffers[i].skb = NULL; - tp->tx_buffers[i].mapping = 0; - tp->tx_ring[i].status = 0x00000000; - tp->tx_ring[i].buffer2 = cpu_to_le32(tp->tx_ring_dma + sizeof(struct tulip_tx_desc) * (i + 1)); - } - tp->tx_ring[i-1].buffer2 = cpu_to_le32(tp->tx_ring_dma); -} - -static netdev_tx_t -tulip_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - int entry; - u32 flag; - dma_addr_t mapping; - unsigned long flags; - - spin_lock_irqsave(&tp->lock, flags); - - /* Calculate the next Tx descriptor entry. */ - entry = tp->cur_tx % TX_RING_SIZE; - - tp->tx_buffers[entry].skb = skb; - mapping = dma_map_single(&tp->pdev->dev, skb->data, skb->len, - DMA_TO_DEVICE); - tp->tx_buffers[entry].mapping = mapping; - tp->tx_ring[entry].buffer1 = cpu_to_le32(mapping); - - if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE/2) {/* Typical path */ - flag = 0x60000000; /* No interrupt */ - } else if (tp->cur_tx - tp->dirty_tx == TX_RING_SIZE/2) { - flag = 0xe0000000; /* Tx-done intr. */ - } else if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE - 2) { - flag = 0x60000000; /* No Tx-done intr. */ - } else { /* Leave room for set_rx_mode() to fill entries. */ - flag = 0xe0000000; /* Tx-done intr. */ - netif_stop_queue(dev); - } - if (entry == TX_RING_SIZE-1) - flag = 0xe0000000 | DESC_RING_WRAP; - - tp->tx_ring[entry].length = cpu_to_le32(skb->len | flag); - /* if we were using Transmit Automatic Polling, we would need a - * wmb() here. */ - tp->tx_ring[entry].status = cpu_to_le32(DescOwned); - wmb(); - - tp->cur_tx++; - - /* Trigger an immediate transmit demand. */ - iowrite32(0, tp->base_addr + CSR1); - - spin_unlock_irqrestore(&tp->lock, flags); - - return NETDEV_TX_OK; -} - -static void tulip_clean_tx_ring(struct tulip_private *tp) -{ - unsigned int dirty_tx; - - for (dirty_tx = tp->dirty_tx ; tp->cur_tx - dirty_tx > 0; - dirty_tx++) { - int entry = dirty_tx % TX_RING_SIZE; - int status = le32_to_cpu(tp->tx_ring[entry].status); - - if (status < 0) { - tp->stats.tx_errors++; /* It wasn't Txed */ - tp->tx_ring[entry].status = 0; - } - - dma_unmap_single(&tp->pdev->dev, tp->tx_buffers[entry].mapping, - tp->tx_buffers[entry].skb->len, - DMA_TO_DEVICE); - - /* Free the original skb. */ - dev_kfree_skb_irq(tp->tx_buffers[entry].skb); - tp->tx_buffers[entry].skb = NULL; - tp->tx_buffers[entry].mapping = 0; - } -} - -static void tulip_down (struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - unsigned long flags; - - napi_disable(&tp->napi); - del_timer_sync (&tp->oom_timer); - spin_lock_irqsave (&tp->lock, flags); - - /* Disable interrupts by clearing the interrupt mask. */ - iowrite32 (0x00000000, ioaddr + CSR7); - - /* Stop the Tx and Rx processes. */ - tulip_stop_rxtx(tp); - - /* prepare receive buffers */ - tulip_refill_rx(dev); - - /* release any unconsumed transmit buffers */ - tulip_clean_tx_ring(tp); - - if (ioread32 (ioaddr + CSR6) != 0xffffffff) - tp->stats.rx_missed_errors += ioread32 (ioaddr + CSR8) & 0xffff; - - spin_unlock_irqrestore (&tp->lock, flags); -} - -static void tulip_free_ring (struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - int i; - - /* Free all the skbuffs in the Rx queue. */ - for (i = 0; i < RX_RING_SIZE; i++) { - struct sk_buff *skb = tp->rx_buffers[i].skb; - dma_addr_t mapping = tp->rx_buffers[i].mapping; - - tp->rx_buffers[i].skb = NULL; - tp->rx_buffers[i].mapping = 0; - - tp->rx_ring[i].status = 0; /* Not owned by Tulip chip. */ - tp->rx_ring[i].length = 0; - /* An invalid address. */ - tp->rx_ring[i].buffer1 = cpu_to_le32(0xBADF00D0); - if (skb) { - dma_unmap_single(&tp->pdev->dev, mapping, PKT_BUF_SZ, - DMA_FROM_DEVICE); - dev_kfree_skb (skb); - } - } - - for (i = 0; i < TX_RING_SIZE; i++) { - struct sk_buff *skb = tp->tx_buffers[i].skb; - - if (skb != NULL) { - dma_unmap_single(&tp->pdev->dev, - tp->tx_buffers[i].mapping, skb->len, DMA_TO_DEVICE); - dev_kfree_skb (skb); - } - tp->tx_buffers[i].skb = NULL; - tp->tx_buffers[i].mapping = 0; - } -} - -static int tulip_close (struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - - netif_stop_queue (dev); - - tulip_down (dev); - - if (tulip_debug > 1) - dev_printk(KERN_DEBUG, &dev->dev, - "Shutting down ethercard, status was %02x\n", - ioread32 (ioaddr + CSR5)); - - free_irq (dev->irq, dev); - - tulip_free_ring (dev); - - return 0; -} - -static struct net_device_stats *tulip_get_stats(struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - - if (netif_running(dev)) { - unsigned long flags; - - spin_lock_irqsave (&tp->lock, flags); - - tp->stats.rx_missed_errors += ioread32(ioaddr + CSR8) & 0xffff; - - spin_unlock_irqrestore(&tp->lock, flags); - } - - return &tp->stats; -} - - -static void tulip_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) -{ - strcpy(info->driver, DRV_NAME); - strcpy(info->version, DRV_VERSION); - strcpy(info->bus_info, "mmio"); -} - -static const struct ethtool_ops ops = { - .get_drvinfo = tulip_get_drvinfo -}; - -static void set_rx_mode(struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - int csr6; - - csr6 = ioread32(ioaddr + CSR6) & ~0x00D5; - - tp->csr6 &= ~0x00D5; - if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - tp->csr6 |= AcceptAllMulticast | AcceptAllPhys; - csr6 |= AcceptAllMulticast | AcceptAllPhys; - } else if ((netdev_mc_count(dev) > 1000) || - (dev->flags & IFF_ALLMULTI)) { - /* Too many to filter well -- accept all multicasts. */ - tp->csr6 |= AcceptAllMulticast; - csr6 |= AcceptAllMulticast; - } else { - /* Some work-alikes have only a 64-entry hash filter table. */ - /* Should verify correctness on big-endian/__powerpc__ */ - struct netdev_hw_addr *ha; - if (netdev_mc_count(dev) > 64) { - /* Arbitrary non-effective limit. */ - tp->csr6 |= AcceptAllMulticast; - csr6 |= AcceptAllMulticast; - } else { - u32 mc_filter[2] = {0, 0}; /* Multicast hash filter */ - int filterbit; - netdev_for_each_mc_addr(ha, dev) { - filterbit = ether_crc_le(ETH_ALEN, ha->addr); - filterbit &= 0x3f; - mc_filter[filterbit >> 5] |= 1 << (filterbit & 31); - if (tulip_debug > 2) - dev_info(&dev->dev, - "Added filter for %pM %08x bit %d\n", - ha->addr, - ether_crc(ETH_ALEN, ha->addr), - filterbit); - } - if (mc_filter[0] == tp->mc_filter[0] && - mc_filter[1] == tp->mc_filter[1]) - ; /* No change. */ - iowrite32(mc_filter[0], ioaddr + CSR27); - iowrite32(mc_filter[1], ioaddr + CSR28); - tp->mc_filter[0] = mc_filter[0]; - tp->mc_filter[1] = mc_filter[1]; - } - } - - if (dev->irq == ADM8668_LAN_IRQ) - csr6 |= (1 << 9); /* force 100Mbps full duplex */ -// csr6 |= 1; /* pad 2 bytes. vlan? */ - - iowrite32(csr6, ioaddr + CSR6); -} - -static const struct net_device_ops tulip_netdev_ops = { - .ndo_open = tulip_open, - .ndo_start_xmit = tulip_start_xmit, - .ndo_tx_timeout = tulip_tx_timeout, - .ndo_stop = tulip_close, - .ndo_get_stats = tulip_get_stats, - .ndo_set_rx_mode = set_rx_mode, - .ndo_change_mtu = eth_change_mtu, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = poll_tulip, -#endif -}; - -static int __devinit adm8668net_probe(struct platform_device *pdev) -{ - struct tulip_private *tp; - struct net_device *dev; - struct resource *res; - void __iomem *ioaddr; - int irq; - - if (pdev->id < 0 || pdev->id >= MAX_UNITS) - return -EINVAL; - - if (!(res = platform_get_resource(pdev, IORESOURCE_IRQ, 0))) - return -ENODEV; - irq = res->start; - if (!(res = platform_get_resource(pdev, IORESOURCE_MEM, 0))) - return -ENODEV; - if (!(ioaddr = ioremap(res->start, res->end - res->start))) - return -ENODEV; - if (!(dev = alloc_etherdev(sizeof (*tp)))) - return -ENOMEM; - - /* setup net dev */ - dev->base_addr = (unsigned long)res->start; - dev->irq = irq; - SET_NETDEV_DEV(dev, &pdev->dev); - - /* tulip private struct */ - tp = netdev_priv(dev); - tp->dev = dev; - tp->base_addr = ioaddr; - tp->csr0 = csr0; - tp->pdev = pdev; - tp->rx_ring = dma_alloc_coherent(&pdev->dev, - sizeof(struct tulip_rx_desc) * RX_RING_SIZE + - sizeof(struct tulip_tx_desc) * TX_RING_SIZE, - &tp->rx_ring_dma, GFP_KERNEL); - if (!tp->rx_ring) - return -ENODEV; - tp->tx_ring = (struct tulip_tx_desc *)(tp->rx_ring + RX_RING_SIZE); - tp->tx_ring_dma = tp->rx_ring_dma + sizeof(struct tulip_rx_desc) * RX_RING_SIZE; - - spin_lock_init(&tp->lock); - - /* Stop the chip's Tx and Rx processes. */ - tulip_stop_rxtx(tp); - - /* Clear the missed-packet counter. */ - ioread32(ioaddr + CSR8); - - /* Addresses are stored in BSP area of NOR flash */ - if (irq == ADM8668_WAN_IRQ) - memcpy(dev->dev_addr, (char *)ADM8668_WAN_MACADDR, 6); - else - memcpy(dev->dev_addr, (char *)ADM8668_LAN_MACADDR, 6); - - /* The Tulip-specific entries in the device structure. */ - dev->netdev_ops = &tulip_netdev_ops; - dev->watchdog_timeo = TX_TIMEOUT; - netif_napi_add(dev, &tp->napi, tulip_poll, 16); - SET_ETHTOOL_OPS(dev, &ops); - - if (register_netdev(dev)) - goto err_out_free_ring; - - dev_info(&dev->dev, - "ADM8668net at MMIO %#lx %pM, IRQ %d\n", - (unsigned long)dev->base_addr, dev->dev_addr, irq); - - platform_set_drvdata(pdev, dev); - return 0; - -err_out_free_ring: - dma_free_coherent(&pdev->dev, - sizeof (struct tulip_rx_desc) * RX_RING_SIZE + - sizeof (struct tulip_tx_desc) * TX_RING_SIZE, - tp->rx_ring, tp->rx_ring_dma); - return -ENODEV; -} - -static int __devexit adm8668net_remove(struct platform_device *pdev) -{ - struct net_device *dev = platform_get_drvdata (pdev); - struct tulip_private *tp; - - if (!dev) - return -ENODEV; - - tp = netdev_priv(dev); - unregister_netdev(dev); - dma_free_coherent(&pdev->dev, - sizeof (struct tulip_rx_desc) * RX_RING_SIZE + - sizeof (struct tulip_tx_desc) * TX_RING_SIZE, - tp->rx_ring, tp->rx_ring_dma); - iounmap(tp->base_addr); - free_netdev(dev); - platform_set_drvdata(pdev, NULL); - return 0; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -/* - * Polling 'interrupt' - used by things like netconsole to send skbs - * without having to re-enable interrupts. It's not called while - * the interrupt routine is executing. - */ - -static void poll_tulip (struct net_device *dev) -{ - /* disable_irq here is not very nice, but with the lockless - interrupt handler we have no other choice. */ - disable_irq(dev->irq); - tulip_interrupt(dev->irq, dev); - enable_irq(dev->irq); -} -#endif - -static struct platform_driver adm8668net_platform_driver = { - .probe = adm8668net_probe, - .remove = __devexit_p(adm8668net_remove), - .driver = { - .owner = THIS_MODULE, - .name = "adm8668_eth" - }, -}; - -static int __init adm8668net_init(void) -{ - pr_info("%s", version); - return platform_driver_register(&adm8668net_platform_driver); -} - -static void __exit adm8668net_exit(void) -{ - platform_driver_unregister(&adm8668net_platform_driver); -} - -module_init(adm8668net_init); -module_exit(adm8668net_exit); |