diff options
| -rw-r--r-- | target/linux/adm8668/files/arch/mips/adm8668/net.h | 277 | ||||
| -rw-r--r-- | target/linux/adm8668/files/arch/mips/adm8668/net_core.c | 618 | ||||
| -rw-r--r-- | target/linux/adm8668/files/arch/mips/adm8668/net_intr.c | 446 |
3 files changed, 0 insertions, 1341 deletions
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/net.h b/target/linux/adm8668/files/arch/mips/adm8668/net.h deleted file mode 100644 index c7aef8cf6e..0000000000 --- a/target/linux/adm8668/files/arch/mips/adm8668/net.h +++ /dev/null @@ -1,277 +0,0 @@ -/* - * originally drivers/net/tulip/tulip.h - * 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. - */ - -#ifndef __NET_TULIP_H__ -#define __NET_TULIP_H__ - -#include <linux/module.h> -#include <linux/export.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/mii.h> -#include <linux/crc32.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/spinlock.h> -#include <linux/netdevice.h> -#include <linux/ethtool.h> -#include <linux/timer.h> -#include <linux/delay.h> -#include <linux/etherdevice.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/interrupt.h> -#include <asm/unaligned.h> -#include <asm/uaccess.h> - -/* undefine, or define to various debugging levels (>4 == obscene levels) */ -#define TULIP_DEBUG 1 -#define VALID_INTR 0x0001a451 -#define ADM8668_WAN_IRQ 8 -#define ADM8668_LAN_IRQ 7 -#define ADM8668_WAN_MACADDR 0xb00205ac -#define ADM8668_LAN_MACADDR 0xb0020404 - -/* Offsets to the Command and Status Registers, "CSRs". All accesses - must be longword instructions and quadword aligned. */ -enum tulip_offsets { - CSR0 = 0, - CSR1 = 0x08, - CSR2 = 0x10, - CSR3 = 0x18, - CSR4 = 0x20, - CSR5 = 0x28, - CSR6 = 0x30, - CSR7 = 0x38, - CSR8 = 0x40, - CSR9 = 0x48, - CSR10 = 0x50, - CSR11 = 0x58, - CSR12 = 0x60, - CSR13 = 0x68, - CSR14 = 0x70, - CSR15 = 0x78, - CSR18 = 0x88, - CSR19 = 0x8c, - CSR20 = 0x90, - CSR27 = 0xAC, - CSR28 = 0xB0, -}; - -#define RxPollInt (RxIntr|RxNoBuf|RxDied|RxJabber) - -/* The bits in the CSR5 status registers, mostly interrupt sources. */ -enum status_bits { - TimerInt = 0x800, - SystemError = 0x2000, - TPLnkFail = 0x1000, - TPLnkPass = 0x10, - NormalIntr = 0x10000, - AbnormalIntr = 0x8000, - RxJabber = 0x200, - RxDied = 0x100, - RxNoBuf = 0x80, - RxIntr = 0x40, - TxFIFOUnderflow = 0x20, - RxErrIntr = 0x10, - TxJabber = 0x08, - TxNoBuf = 0x04, - TxDied = 0x02, - TxIntr = 0x01, -}; - -/* bit mask for CSR5 TX/RX process state */ -#define CSR5_TS 0x00700000 -#define CSR5_RS 0x000e0000 - -enum tulip_mode_bits { - TxThreshold = (1 << 22), - FullDuplex = (1 << 9), - TxOn = 0x2000, - AcceptBroadcast = 0x0100, - AcceptAllMulticast = 0x0080, - AcceptAllPhys = 0x0040, - AcceptRunt = 0x0008, - RxOn = 0x0002, - RxTx = (TxOn | RxOn), -}; - -/* The Tulip Rx and Tx buffer descriptors. */ -struct tulip_rx_desc { - __le32 status; - __le32 length; - __le32 buffer1; - __le32 buffer2; -}; - -struct tulip_tx_desc { - __le32 status; - __le32 length; - __le32 buffer1; - __le32 buffer2; /* We use only buffer 1. */ -}; - -enum desc_status_bits { - DescOwned = 0x80000000, - DescWholePkt = 0x60000000, - DescEndPkt = 0x40000000, - DescStartPkt = 0x20000000, - DescEndRing = 0x02000000, - DescUseLink = 0x01000000, - - /* - * Error summary flag is logical or of 'CRC Error', 'Collision Seen', - * 'Frame Too Long', 'Runt' and 'Descriptor Error' flags generated - * within tulip chip. - */ - RxDescErrorSummary = 0x8000, - RxDescCRCError = 0x0002, - RxDescCollisionSeen = 0x0040, - - /* - * 'Frame Too Long' flag is set if packet length including CRC exceeds - * 1518. However, a full sized VLAN tagged frame is 1522 bytes - * including CRC. - * - * The tulip chip does not block oversized frames, and if this flag is - * set on a receive descriptor it does not indicate the frame has been - * truncated. The receive descriptor also includes the actual length. - * Therefore we can safety ignore this flag and check the length - * ourselves. - */ - RxDescFrameTooLong = 0x0080, - RxDescRunt = 0x0800, - RxDescDescErr = 0x4000, - RxWholePkt = 0x00000300, - /* - * Top three bits of 14 bit frame length (status bits 27-29) should - * never be set as that would make frame over 2047 bytes. The Receive - * Watchdog flag (bit 4) may indicate the length is over 2048 and the - * length field is invalid. - */ - RxLengthOver2047 = 0x38000010 -}; - -/* Keep the ring sizes a power of two for efficiency. - Making the Tx ring too large decreases the effectiveness of channel - bonding and packet priority. - There are no ill effects from too-large receive rings. */ - -#define TX_RING_SIZE 32 -#define RX_RING_SIZE 128 - -/* The receiver on the DC21143 rev 65 can fail to close the last - * receive descriptor in certain circumstances (see errata) when - * using MWI. This can only occur if the receive buffer ends on - * a cache line boundary, so the "+ 4" below ensures it doesn't. - */ -#define PKT_BUF_SZ (1536 + 4) /* Size of each temporary Rx buffer. */ - -/* Ring-wrap flag in length field, use for last ring entry. - 0x01000000 means chain on buffer2 address, - 0x02000000 means use the ring start address in CSR2/3. - Note: Some work-alike chips do not function correctly in chained mode. - The ASIX chip works only in chained mode. - Thus we indicates ring mode, but always write the 'next' field for - chained mode as well. -*/ -#define DESC_RING_WRAP 0x02000000 - -struct ring_info { - struct sk_buff *skb; - dma_addr_t mapping; -}; - -struct tulip_private { - struct tulip_rx_desc *rx_ring; - struct tulip_tx_desc *tx_ring; - dma_addr_t rx_ring_dma; - dma_addr_t tx_ring_dma; - /* The saved address of a sent-in-place packet/buffer, for skfree(). */ - struct ring_info tx_buffers[TX_RING_SIZE]; - /* The addresses of receive-in-place skbuffs. */ - struct ring_info rx_buffers[RX_RING_SIZE]; - struct napi_struct napi; - struct net_device_stats stats; - struct timer_list oom_timer; /* Out of memory timer. */ - u32 mc_filter[2]; - spinlock_t lock; - unsigned int cur_rx, cur_tx; /* The next free ring entry */ - unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ - unsigned int csr0; /* CSR0 setting. */ - unsigned int csr6; /* Current CSR6 control settings. */ - void (*link_change) (struct net_device * dev, int csr5); - struct platform_device *pdev; - unsigned long nir; - void __iomem *base_addr; - int pad0; /* Used for 8-byte alignment */ - struct net_device *dev; -}; - - -/* interrupt.c */ -irqreturn_t tulip_interrupt(int irq, void *dev_instance); -int tulip_refill_rx(struct net_device *dev); -int tulip_poll(struct napi_struct *napi, int budget); - -/* tulip_core.c */ -extern int tulip_debug; -void oom_timer(unsigned long data); - -static inline void tulip_start_rxtx(struct tulip_private *tp) -{ - void __iomem *ioaddr = tp->base_addr; - iowrite32(tp->csr6 | RxTx, ioaddr + CSR6); - barrier(); - (void) ioread32(ioaddr + CSR6); /* mmio sync */ -} - -static inline void tulip_stop_rxtx(struct tulip_private *tp) -{ - void __iomem *ioaddr = tp->base_addr; - u32 csr6 = ioread32(ioaddr + CSR6); - - if (csr6 & RxTx) { - unsigned i=1300/10; - iowrite32(csr6 & ~RxTx, ioaddr + CSR6); - barrier(); - /* wait until in-flight frame completes. - * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin) - * Typically expect this loop to end in < 50 us on 100BT. - */ - while (--i && (ioread32(ioaddr + CSR5) & (CSR5_TS|CSR5_RS))) - udelay(10); - - if (!i) - printk(KERN_DEBUG "fixme: tulip_stop_rxtx() failed" - " (CSR5 0x%x CSR6 0x%x)\n", - ioread32(ioaddr + CSR5), - ioread32(ioaddr + CSR6)); - } -} - -static inline void tulip_restart_rxtx(struct tulip_private *tp) -{ - tulip_stop_rxtx(tp); - udelay(5); - tulip_start_rxtx(tp); -} - -static inline void tulip_tx_timeout_complete(struct tulip_private *tp, void __iomem *ioaddr) -{ - /* Stop and restart the chip's Tx processes. */ - tulip_restart_rxtx(tp); - /* Trigger an immediate transmit demand. */ - iowrite32(0, ioaddr + CSR1); - - tp->stats.tx_errors++; -} - -#endif /* __NET_TULIP_H__ */ 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); diff --git a/target/linux/adm8668/files/arch/mips/adm8668/net_intr.c b/target/linux/adm8668/files/arch/mips/adm8668/net_intr.c deleted file mode 100644 index 113dbaebd7..0000000000 --- a/target/linux/adm8668/files/arch/mips/adm8668/net_intr.c +++ /dev/null @@ -1,446 +0,0 @@ -/* - * originally drivers/net/tulip/interrupt.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. - */ - -#include "net.h" - -int tulip_refill_rx(struct net_device *dev) -{ - struct tulip_private *tp = netdev_priv(dev); - int entry; - int refilled = 0; - - /* Refill the Rx ring buffers. */ - for (; tp->cur_rx - tp->dirty_rx > 0; tp->dirty_rx++) { - entry = tp->dirty_rx % RX_RING_SIZE; - if (tp->rx_buffers[entry].skb == NULL) { - struct sk_buff *skb; - dma_addr_t mapping; - - skb = tp->rx_buffers[entry].skb = dev_alloc_skb(PKT_BUF_SZ); - if (skb == NULL) - break; - - mapping = dma_map_single(&dev->dev, skb->data, - PKT_BUF_SZ, DMA_FROM_DEVICE); - tp->rx_buffers[entry].mapping = mapping; - - skb->dev = dev; /* Mark as being used by this device. */ - tp->rx_ring[entry].buffer1 = cpu_to_le32(mapping); - refilled++; - } - tp->rx_ring[entry].status = cpu_to_le32(DescOwned); - } - return refilled; -} - -void oom_timer(unsigned long data) -{ - struct net_device *dev = (struct net_device *)data; - struct tulip_private *tp = netdev_priv(dev); - napi_schedule(&tp->napi); -} - -int tulip_poll(struct napi_struct *napi, int budget) -{ - struct tulip_private *tp = container_of(napi, struct tulip_private, napi); - struct net_device *dev = tp->dev; - int entry = tp->cur_rx % RX_RING_SIZE; - int work_done = 0; - - if (tulip_debug > 4) - printk(KERN_DEBUG " In tulip_rx(), entry %d %08x\n", - entry, tp->rx_ring[entry].status); - - do { - if (ioread32(tp->base_addr + CSR5) == 0xffffffff) { - printk(KERN_DEBUG " In tulip_poll(), hardware disappeared\n"); - break; - } - /* Acknowledge current RX interrupt sources. */ - iowrite32((RxIntr | RxNoBuf), tp->base_addr + CSR5); - - - /* If we own the next entry, it is a new packet. Send it up. */ - while ( ! (tp->rx_ring[entry].status & cpu_to_le32(DescOwned))) { - s32 status = le32_to_cpu(tp->rx_ring[entry].status); - short pkt_len; - - if (tp->dirty_rx + RX_RING_SIZE == tp->cur_rx) - break; - - if (tulip_debug > 5) - printk(KERN_DEBUG "%s: In tulip_rx(), entry %d %08x\n", - dev->name, entry, status); - - if (++work_done >= budget) - goto not_done; - - /* - * Omit the four octet CRC from the length. - * (May not be considered valid until we have - * checked status for RxLengthOver2047 bits) - */ - pkt_len = ((status >> 16) & 0x7ff) - 4; - -#if 0 - csr6 = ioread32(tp->base_addr + CSR6); - if (csr6 & 0x1) - pkt_len += 2; - -#endif - /* - * Maximum pkt_len is 1518 (1514 + vlan header) - * Anything higher than this is always invalid - * regardless of RxLengthOver2047 bits - */ - - if ((status & (RxLengthOver2047 | - RxDescCRCError | - RxDescCollisionSeen | - RxDescRunt | - RxDescDescErr | - RxWholePkt)) != RxWholePkt || - pkt_len > 1518) { - if ((status & (RxLengthOver2047 | - RxWholePkt)) != RxWholePkt) { - /* Ingore earlier buffers. */ - if ((status & 0xffff) != 0x7fff) { - if (tulip_debug > 1) - dev_warn(&dev->dev, - "Oversized Ethernet frame spanned multiple buffers, status %08x!\n", - status); - tp->stats.rx_length_errors++; - } - } else { - /* There was a fatal error. */ - if (tulip_debug > 2) - printk(KERN_DEBUG "%s: Receive error, Rx status %08x\n", - dev->name, status); - tp->stats.rx_errors++; /* end of a packet.*/ - if (pkt_len > 1518 || - (status & RxDescRunt)) - tp->stats.rx_length_errors++; - - if (status & 0x0004) tp->stats.rx_frame_errors++; - if (status & 0x0002) tp->stats.rx_crc_errors++; - if (status & 0x0001) tp->stats.rx_fifo_errors++; - } - } else { - struct sk_buff *skb = tp->rx_buffers[entry].skb; - char *temp = skb_put(skb, pkt_len); - -#if 0 - if (csr6 & 1) - skb_pull(skb, 2); -#endif -#ifndef final_version - if (tp->rx_buffers[entry].mapping != - le32_to_cpu(tp->rx_ring[entry].buffer1)) { - dev_err(&dev->dev, - "Internal fault: The skbuff addresses do not match in tulip_rx: %08x vs. %08llx %p / %p\n", - le32_to_cpu(tp->rx_ring[entry].buffer1), - (unsigned long long)tp->rx_buffers[entry].mapping, - skb->head, temp); - } -#endif - - tp->rx_buffers[entry].skb = NULL; - tp->rx_buffers[entry].mapping = 0; - skb->protocol = eth_type_trans(skb, dev); - - netif_receive_skb(skb); - - tp->stats.rx_packets++; - tp->stats.rx_bytes += pkt_len; - } - entry = (++tp->cur_rx) % RX_RING_SIZE; - if (tp->cur_rx - tp->dirty_rx > RX_RING_SIZE/4) - tulip_refill_rx(dev); - - } - - /* New ack strategy... irq does not ack Rx any longer - hopefully this helps */ - - /* Really bad things can happen here... If new packet arrives - * and an irq arrives (tx or just due to occasionally unset - * mask), it will be acked by irq handler, but new thread - * is not scheduled. It is major hole in design. - * No idea how to fix this if "playing with fire" will fail - * tomorrow (night 011029). If it will not fail, we won - * finally: amount of IO did not increase at all. */ - } while ((ioread32(tp->base_addr + CSR5) & RxIntr)); - - tulip_refill_rx(dev); - - /* If RX ring is not full we are out of memory. */ - if (tp->rx_buffers[tp->dirty_rx % RX_RING_SIZE].skb == NULL) - goto oom; - - /* Remove us from polling list and enable RX intr. */ - napi_complete(napi); - iowrite32(VALID_INTR, tp->base_addr+CSR7); - - /* The last op happens after poll completion. Which means the following: - * 1. it can race with disabling irqs in irq handler - * 2. it can race with dise/enabling irqs in other poll threads - * 3. if an irq raised after beginning loop, it will be immediately - * triggered here. - * - * Summarizing: the logic results in some redundant irqs both - * due to races in masking and due to too late acking of already - * processed irqs. But it must not result in losing events. - */ - - return work_done; - - not_done: - if (tp->cur_rx - tp->dirty_rx > RX_RING_SIZE/2 || - tp->rx_buffers[tp->dirty_rx % RX_RING_SIZE].skb == NULL) - tulip_refill_rx(dev); - - if (tp->rx_buffers[tp->dirty_rx % RX_RING_SIZE].skb == NULL) - goto oom; - - return work_done; - - oom: /* Executed with RX ints disabled */ - - /* Start timer, stop polling, but do not enable rx interrupts. */ - mod_timer(&tp->oom_timer, jiffies+1); - - /* Think: timer_pending() was an explicit signature of bug. - * Timer can be pending now but fired and completed - * before we did napi_complete(). See? We would lose it. */ - - /* remove ourselves from the polling list */ - napi_complete(napi); - - return work_done; -} - -/* The interrupt handler does all of the Rx thread work and cleans up - after the Tx thread. */ -irqreturn_t tulip_interrupt(int irq, void *dev_instance) -{ - struct net_device *dev = (struct net_device *)dev_instance; - struct tulip_private *tp = netdev_priv(dev); - void __iomem *ioaddr = tp->base_addr; - int csr5; - int missed; - int rx = 0; - int tx = 0; - int oi = 0; - int maxrx = RX_RING_SIZE; - int maxtx = TX_RING_SIZE; - int maxoi = TX_RING_SIZE; - int rxd = 0; - unsigned int work_count = 25; - unsigned int handled = 0; - - /* Let's see whether the interrupt really is for us */ - csr5 = ioread32(ioaddr + CSR5); - - if ((csr5 & (NormalIntr|AbnormalIntr)) == 0) - return IRQ_RETVAL(handled); - - tp->nir++; - - do { - - if (!rxd && (csr5 & (RxIntr | RxNoBuf))) { - rxd++; - /* Mask RX intrs and add the device to poll list. */ - iowrite32(VALID_INTR&~RxPollInt, ioaddr + CSR7); - napi_schedule(&tp->napi); - - if (!(csr5&~(AbnormalIntr|NormalIntr|RxPollInt|TPLnkPass))) - break; - } - - /* Acknowledge the interrupt sources we handle here ASAP - the poll function does Rx and RxNoBuf acking */ - - iowrite32(csr5 & 0x0001ff3f, ioaddr + CSR5); - - if (tulip_debug > 4) - printk(KERN_DEBUG "%s: interrupt csr5=%#8.8x new csr5=%#8.8x\n", - dev->name, csr5, ioread32(ioaddr + CSR5)); - - - if (csr5 & (TxNoBuf | TxDied | TxIntr | TimerInt)) { - unsigned int dirty_tx; - - spin_lock(&tp->lock); - - 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) - break; /* It still has not been Txed */ - - if (status & 0x8000) { - /* There was an major error, log it. */ -#ifndef final_version - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Transmit error, Tx status %08x\n", - dev->name, status); -#endif - tp->stats.tx_errors++; - if (status & 0x4104) tp->stats.tx_aborted_errors++; - if (status & 0x0C00) tp->stats.tx_carrier_errors++; - if (status & 0x0200) tp->stats.tx_window_errors++; - if (status & 0x0002) tp->stats.tx_fifo_errors++; - if (status & 0x0080) tp->stats.tx_heartbeat_errors++; - } else { - tp->stats.tx_bytes += - tp->tx_buffers[entry].skb->len; - tp->stats.collisions += (status >> 3) & 15; - tp->stats.tx_packets++; - } - - 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; - tx++; - } - -#ifndef final_version - if (tp->cur_tx - dirty_tx > TX_RING_SIZE) { - dev_err(&dev->dev, - "Out-of-sync dirty pointer, %d vs. %d\n", - dirty_tx, tp->cur_tx); - dirty_tx += TX_RING_SIZE; - } -#endif - - if (tp->cur_tx - dirty_tx < TX_RING_SIZE - 2) - netif_wake_queue(dev); - - tp->dirty_tx = dirty_tx; - if (csr5 & TxDied) { - if (tulip_debug > 2) - dev_warn(&dev->dev, - "The transmitter stopped. CSR5 is %x, CSR6 %x, new CSR6 %x\n", - csr5, ioread32(ioaddr + CSR6), - tp->csr6); - tulip_restart_rxtx(tp); - } - spin_unlock(&tp->lock); - } - - /* Log errors. */ - if (csr5 & AbnormalIntr) { /* Abnormal error summary bit. */ - if (csr5 == 0xffffffff) - break; - if (csr5 & TxJabber) tp->stats.tx_errors++; - if (csr5 & TxFIFOUnderflow) { - if ((tp->csr6 & 0xC000) != 0xC000) - tp->csr6 += 0x4000; /* Bump up the Tx threshold */ - else - tp->csr6 |= 0x00200000; /* Store-n-forward. */ - /* Restart the transmit process. */ - tulip_restart_rxtx(tp); - iowrite32(0, ioaddr + CSR1); - } - if (csr5 & (RxDied | RxNoBuf)) { - iowrite32(tp->mc_filter[0], ioaddr + CSR27); - iowrite32(tp->mc_filter[1], ioaddr + CSR28); - } - if (csr5 & RxDied) { /* Missed a Rx frame. */ - tp->stats.rx_missed_errors += ioread32(ioaddr + CSR8) & 0xffff; - tp->stats.rx_errors++; - tulip_start_rxtx(tp); - } - /* - * NB: t21142_lnk_change() does a del_timer_sync(), so be careful if this - * call is ever done under the spinlock - */ - if (csr5 & (TPLnkPass | TPLnkFail | 0x08000000)) { - if (tp->link_change) - (tp->link_change)(dev, csr5); - } - if (csr5 & SystemError) { - int error = (csr5 >> 23) & 7; - /* oops, we hit a PCI error. The code produced corresponds - * to the reason: - * 0 - parity error - * 1 - master abort - * 2 - target abort - * Note that on parity error, we should do a software reset - * of the chip to get it back into a sane state (according - * to the 21142/3 docs that is). - * -- rmk - */ - dev_err(&dev->dev, - "(%lu) System Error occurred (%d)\n", - tp->nir, error); - } - /* Clear all error sources, included undocumented ones! */ - iowrite32(0x0800f7ba, ioaddr + CSR5); - oi++; - } - if (csr5 & TimerInt) { - - if (tulip_debug > 2) - dev_err(&dev->dev, - "Re-enabling interrupts, %08x\n", - csr5); - iowrite32(VALID_INTR, ioaddr + CSR7); - oi++; - } - if (tx > maxtx || rx > maxrx || oi > maxoi) { - if (tulip_debug > 1) - dev_warn(&dev->dev, "Too much work during an interrupt, csr5=0x%08x. (%lu) (%d,%d,%d)\n", - csr5, tp->nir, tx, rx, oi); - - /* Acknowledge all interrupt sources. */ - iowrite32(0x8001ffff, ioaddr + CSR5); - /* Mask all interrupting sources, set timer to - re-enable. */ - iowrite32(((~csr5) & 0x0001ebef) | AbnormalIntr | TimerInt, ioaddr + CSR7); - iowrite32(0x0012, ioaddr + CSR11); - break; - } - - work_count--; - if (work_count == 0) - break; - - csr5 = ioread32(ioaddr + CSR5); - - if (rxd) - csr5 &= ~RxPollInt; - } while ((csr5 & (TxNoBuf | - TxDied | - TxIntr | - TimerInt | - /* Abnormal intr. */ - RxDied | - TxFIFOUnderflow | - TxJabber | - TPLnkFail | - SystemError )) != 0); - - if ((missed = ioread32(ioaddr + CSR8) & 0x1ffff)) { - tp->stats.rx_dropped += missed & 0x10000 ? 0x10000 : missed; - } - - if (tulip_debug > 4) - printk(KERN_DEBUG "%s: exiting interrupt, csr5=%#04x\n", - dev->name, ioread32(ioaddr + CSR5)); - - return IRQ_HANDLED; -} |