diff options
author | Linus Torvalds | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/arm |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/net/arm')
-rw-r--r-- | drivers/net/arm/Kconfig | 46 | ||||
-rw-r--r-- | drivers/net/arm/Makefile | 10 | ||||
-rw-r--r-- | drivers/net/arm/am79c961a.c | 750 | ||||
-rw-r--r-- | drivers/net/arm/am79c961a.h | 148 | ||||
-rw-r--r-- | drivers/net/arm/ether00.c | 1017 | ||||
-rw-r--r-- | drivers/net/arm/ether1.c | 1110 | ||||
-rw-r--r-- | drivers/net/arm/ether1.h | 281 | ||||
-rw-r--r-- | drivers/net/arm/ether3.c | 936 | ||||
-rw-r--r-- | drivers/net/arm/ether3.h | 177 | ||||
-rw-r--r-- | drivers/net/arm/etherh.c | 862 |
10 files changed, 5337 insertions, 0 deletions
diff --git a/drivers/net/arm/Kconfig b/drivers/net/arm/Kconfig new file mode 100644 index 000000000000..470364deded0 --- /dev/null +++ b/drivers/net/arm/Kconfig @@ -0,0 +1,46 @@ +# +# Acorn Network device configuration +# These are for Acorn's Expansion card network interfaces +# +config ARM_AM79C961A + bool "ARM EBSA110 AM79C961A support" + depends on NET_ETHERNET && ARM && ARCH_EBSA110 + select CRC32 + help + If you wish to compile a kernel for the EBSA-110, then you should + always answer Y to this. + +config ARM_ETHER1 + tristate "Acorn Ether1 support" + depends on NET_ETHERNET && ARM && ARCH_ACORN + help + If you have an Acorn system with one of these (AKA25) network cards, + you should say Y to this option if you wish to use it with Linux. + +config ARM_ETHER3 + tristate "Acorn/ANT Ether3 support" + depends on NET_ETHERNET && ARM && ARCH_ACORN + help + If you have an Acorn system with one of these network cards, you + should say Y to this option if you wish to use it with Linux. + +config ARM_ETHERH + tristate "I-cubed EtherH/ANT EtherM support" + depends on NET_ETHERNET && ARM && ARCH_ACORN + select CRC32 + help + If you have an Acorn system with one of these network cards, you + should say Y to this option if you wish to use it with Linux. + +config ARM_ETHER00 + tristate "Altera Ether00 support" + depends on NET_ETHERNET && ARM && ARCH_CAMELOT + help + This is the driver for Altera's ether00 ethernet mac IP core. Say + Y here if you want to build support for this into the kernel. It + is also available as a module (say M here) that can be inserted/ + removed from the kernel at the same time as the PLD is configured. + If this driver is running on an epxa10 development board then it + will generate a suitable hw address based on the board serial + number (MTD support is required for this). Otherwise you will + need to set a suitable hw address using ifconfig. diff --git a/drivers/net/arm/Makefile b/drivers/net/arm/Makefile new file mode 100644 index 000000000000..b0d706834d89 --- /dev/null +++ b/drivers/net/arm/Makefile @@ -0,0 +1,10 @@ +# File: drivers/net/arm/Makefile +# +# Makefile for the ARM network device drivers +# + +obj-$(CONFIG_ARM_AM79C961A) += am79c961a.o +obj-$(CONFIG_ARM_ETHER00) += ether00.o +obj-$(CONFIG_ARM_ETHERH) += etherh.o +obj-$(CONFIG_ARM_ETHER3) += ether3.o +obj-$(CONFIG_ARM_ETHER1) += ether1.o diff --git a/drivers/net/arm/am79c961a.c b/drivers/net/arm/am79c961a.c new file mode 100644 index 000000000000..9b659e3c8d67 --- /dev/null +++ b/drivers/net/arm/am79c961a.c @@ -0,0 +1,750 @@ +/* + * linux/drivers/net/am79c961.c + * + * by Russell King <rmk@arm.linux.org.uk> 1995-2001. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Derived from various things including skeleton.c + * + * This is a special driver for the am79c961A Lance chip used in the + * Intel (formally Digital Equipment Corp) EBSA110 platform. Please + * note that this can not be built as a module (it doesn't make sense). + */ +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/crc32.h> +#include <linux/bitops.h> + +#include <asm/system.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/dma.h> + +#define TX_BUFFERS 15 +#define RX_BUFFERS 25 + +#include "am79c961a.h" + +static irqreturn_t +am79c961_interrupt (int irq, void *dev_id, struct pt_regs *regs); + +static unsigned int net_debug = NET_DEBUG; + +static const char version[] = + "am79c961 ethernet driver (C) 1995-2001 Russell King v0.04\n"; + +/* --------------------------------------------------------------------------- */ + +#ifdef __arm__ +static void write_rreg(u_long base, u_int reg, u_int val) +{ + __asm__( + "str%?h %1, [%2] @ NET_RAP\n\t" + "str%?h %0, [%2, #-4] @ NET_RDP" + : + : "r" (val), "r" (reg), "r" (ISAIO_BASE + 0x0464)); +} + +static inline unsigned short read_rreg(u_long base_addr, u_int reg) +{ + unsigned short v; + __asm__( + "str%?h %1, [%2] @ NET_RAP\n\t" + "ldr%?h %0, [%2, #-4] @ NET_RDP" + : "=r" (v) + : "r" (reg), "r" (ISAIO_BASE + 0x0464)); + return v; +} + +static inline void write_ireg(u_long base, u_int reg, u_int val) +{ + __asm__( + "str%?h %1, [%2] @ NET_RAP\n\t" + "str%?h %0, [%2, #8] @ NET_IDP" + : + : "r" (val), "r" (reg), "r" (ISAIO_BASE + 0x0464)); +} + +static inline unsigned short read_ireg(u_long base_addr, u_int reg) +{ + u_short v; + __asm__( + "str%?h %1, [%2] @ NAT_RAP\n\t" + "str%?h %0, [%2, #8] @ NET_IDP\n\t" + : "=r" (v) + : "r" (reg), "r" (ISAIO_BASE + 0x0464)); + return v; +} + +#define am_writeword(dev,off,val) __raw_writew(val, ISAMEM_BASE + ((off) << 1)) +#define am_readword(dev,off) __raw_readw(ISAMEM_BASE + ((off) << 1)) + +static inline void +am_writebuffer(struct net_device *dev, u_int offset, unsigned char *buf, unsigned int length) +{ + offset = ISAMEM_BASE + (offset << 1); + length = (length + 1) & ~1; + if ((int)buf & 2) { + __asm__ __volatile__("str%?h %2, [%0], #4" + : "=&r" (offset) : "0" (offset), "r" (buf[0] | (buf[1] << 8))); + buf += 2; + length -= 2; + } + while (length > 8) { + unsigned int tmp, tmp2; + __asm__ __volatile__( + "ldm%?ia %1!, {%2, %3}\n\t" + "str%?h %2, [%0], #4\n\t" + "mov%? %2, %2, lsr #16\n\t" + "str%?h %2, [%0], #4\n\t" + "str%?h %3, [%0], #4\n\t" + "mov%? %3, %3, lsr #16\n\t" + "str%?h %3, [%0], #4" + : "=&r" (offset), "=&r" (buf), "=r" (tmp), "=r" (tmp2) + : "0" (offset), "1" (buf)); + length -= 8; + } + while (length > 0) { + __asm__ __volatile__("str%?h %2, [%0], #4" + : "=&r" (offset) : "0" (offset), "r" (buf[0] | (buf[1] << 8))); + buf += 2; + length -= 2; + } +} + +static inline void +am_readbuffer(struct net_device *dev, u_int offset, unsigned char *buf, unsigned int length) +{ + offset = ISAMEM_BASE + (offset << 1); + length = (length + 1) & ~1; + if ((int)buf & 2) { + unsigned int tmp; + __asm__ __volatile__( + "ldr%?h %2, [%0], #4\n\t" + "str%?b %2, [%1], #1\n\t" + "mov%? %2, %2, lsr #8\n\t" + "str%?b %2, [%1], #1" + : "=&r" (offset), "=&r" (buf), "=r" (tmp): "0" (offset), "1" (buf)); + length -= 2; + } + while (length > 8) { + unsigned int tmp, tmp2, tmp3; + __asm__ __volatile__( + "ldr%?h %2, [%0], #4\n\t" + "ldr%?h %3, [%0], #4\n\t" + "orr%? %2, %2, %3, lsl #16\n\t" + "ldr%?h %3, [%0], #4\n\t" + "ldr%?h %4, [%0], #4\n\t" + "orr%? %3, %3, %4, lsl #16\n\t" + "stm%?ia %1!, {%2, %3}" + : "=&r" (offset), "=&r" (buf), "=r" (tmp), "=r" (tmp2), "=r" (tmp3) + : "0" (offset), "1" (buf)); + length -= 8; + } + while (length > 0) { + unsigned int tmp; + __asm__ __volatile__( + "ldr%?h %2, [%0], #4\n\t" + "str%?b %2, [%1], #1\n\t" + "mov%? %2, %2, lsr #8\n\t" + "str%?b %2, [%1], #1" + : "=&r" (offset), "=&r" (buf), "=r" (tmp) : "0" (offset), "1" (buf)); + length -= 2; + } +} +#else +#error Not compatible +#endif + +static int +am79c961_ramtest(struct net_device *dev, unsigned int val) +{ + unsigned char *buffer = kmalloc (65536, GFP_KERNEL); + int i, error = 0, errorcount = 0; + + if (!buffer) + return 0; + memset (buffer, val, 65536); + am_writebuffer(dev, 0, buffer, 65536); + memset (buffer, val ^ 255, 65536); + am_readbuffer(dev, 0, buffer, 65536); + for (i = 0; i < 65536; i++) { + if (buffer[i] != val && !error) { + printk ("%s: buffer error (%02X %02X) %05X - ", dev->name, val, buffer[i], i); + error = 1; + errorcount ++; + } else if (error && buffer[i] == val) { + printk ("%05X\n", i); + error = 0; + } + } + if (error) + printk ("10000\n"); + kfree (buffer); + return errorcount; +} + +static void +am79c961_init_for_open(struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + unsigned long flags; + unsigned char *p; + u_int hdr_addr, first_free_addr; + int i; + + /* + * Stop the chip. + */ + spin_lock_irqsave(priv->chip_lock, flags); + write_rreg (dev->base_addr, CSR0, CSR0_BABL|CSR0_CERR|CSR0_MISS|CSR0_MERR|CSR0_TINT|CSR0_RINT|CSR0_STOP); + spin_unlock_irqrestore(priv->chip_lock, flags); + + write_ireg (dev->base_addr, 5, 0x00a0); /* Receive address LED */ + write_ireg (dev->base_addr, 6, 0x0081); /* Collision LED */ + write_ireg (dev->base_addr, 7, 0x0090); /* XMIT LED */ + write_ireg (dev->base_addr, 2, 0x0000); /* MODE register selects media */ + + for (i = LADRL; i <= LADRH; i++) + write_rreg (dev->base_addr, i, 0); + + for (i = PADRL, p = dev->dev_addr; i <= PADRH; i++, p += 2) + write_rreg (dev->base_addr, i, p[0] | (p[1] << 8)); + + i = MODE_PORT_10BT; + if (dev->flags & IFF_PROMISC) + i |= MODE_PROMISC; + + write_rreg (dev->base_addr, MODE, i); + write_rreg (dev->base_addr, POLLINT, 0); + write_rreg (dev->base_addr, SIZERXR, -RX_BUFFERS); + write_rreg (dev->base_addr, SIZETXR, -TX_BUFFERS); + + first_free_addr = RX_BUFFERS * 8 + TX_BUFFERS * 8 + 16; + hdr_addr = 0; + + priv->rxhead = 0; + priv->rxtail = 0; + priv->rxhdr = hdr_addr; + + for (i = 0; i < RX_BUFFERS; i++) { + priv->rxbuffer[i] = first_free_addr; + am_writeword (dev, hdr_addr, first_free_addr); + am_writeword (dev, hdr_addr + 2, RMD_OWN); + am_writeword (dev, hdr_addr + 4, (-1600)); + am_writeword (dev, hdr_addr + 6, 0); + first_free_addr += 1600; + hdr_addr += 8; + } + priv->txhead = 0; + priv->txtail = 0; + priv->txhdr = hdr_addr; + for (i = 0; i < TX_BUFFERS; i++) { + priv->txbuffer[i] = first_free_addr; + am_writeword (dev, hdr_addr, first_free_addr); + am_writeword (dev, hdr_addr + 2, TMD_STP|TMD_ENP); + am_writeword (dev, hdr_addr + 4, 0xf000); + am_writeword (dev, hdr_addr + 6, 0); + first_free_addr += 1600; + hdr_addr += 8; + } + + write_rreg (dev->base_addr, BASERXL, priv->rxhdr); + write_rreg (dev->base_addr, BASERXH, 0); + write_rreg (dev->base_addr, BASETXL, priv->txhdr); + write_rreg (dev->base_addr, BASERXH, 0); + write_rreg (dev->base_addr, CSR0, CSR0_STOP); + write_rreg (dev->base_addr, CSR3, CSR3_IDONM|CSR3_BABLM|CSR3_DXSUFLO); + write_rreg (dev->base_addr, CSR4, CSR4_APAD_XMIT|CSR4_MFCOM|CSR4_RCVCCOM|CSR4_TXSTRTM|CSR4_JABM); + write_rreg (dev->base_addr, CSR0, CSR0_IENA|CSR0_STRT); +} + +static void am79c961_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct dev_priv *priv = netdev_priv(dev); + unsigned int lnkstat, carrier; + + lnkstat = read_ireg(dev->base_addr, ISALED0) & ISALED0_LNKST; + carrier = netif_carrier_ok(dev); + + if (lnkstat && !carrier) + netif_carrier_on(dev); + else if (!lnkstat && carrier) + netif_carrier_off(dev); + + mod_timer(&priv->timer, jiffies + 5*HZ); +} + +/* + * Open/initialize the board. + */ +static int +am79c961_open(struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + int ret; + + memset (&priv->stats, 0, sizeof (priv->stats)); + + ret = request_irq(dev->irq, am79c961_interrupt, 0, dev->name, dev); + if (ret) + return ret; + + am79c961_init_for_open(dev); + + netif_carrier_off(dev); + + priv->timer.expires = jiffies; + add_timer(&priv->timer); + + netif_start_queue(dev); + + return 0; +} + +/* + * The inverse routine to am79c961_open(). + */ +static int +am79c961_close(struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + unsigned long flags; + + del_timer_sync(&priv->timer); + + netif_stop_queue(dev); + netif_carrier_off(dev); + + spin_lock_irqsave(priv->chip_lock, flags); + write_rreg (dev->base_addr, CSR0, CSR0_STOP); + write_rreg (dev->base_addr, CSR3, CSR3_MASKALL); + spin_unlock_irqrestore(priv->chip_lock, flags); + + free_irq (dev->irq, dev); + + return 0; +} + +/* + * Get the current statistics. + */ +static struct net_device_stats *am79c961_getstats (struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + return &priv->stats; +} + +static void am79c961_mc_hash(struct dev_mc_list *dmi, unsigned short *hash) +{ + if (dmi->dmi_addrlen == ETH_ALEN && dmi->dmi_addr[0] & 0x01) { + int idx, bit; + u32 crc; + + crc = ether_crc_le(ETH_ALEN, dmi->dmi_addr); + + idx = crc >> 30; + bit = (crc >> 26) & 15; + + hash[idx] |= 1 << bit; + } +} + +/* + * Set or clear promiscuous/multicast mode filter for this adapter. + */ +static void am79c961_setmulticastlist (struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + unsigned long flags; + unsigned short multi_hash[4], mode; + int i, stopped; + + mode = MODE_PORT_10BT; + + if (dev->flags & IFF_PROMISC) { + mode |= MODE_PROMISC; + } else if (dev->flags & IFF_ALLMULTI) { + memset(multi_hash, 0xff, sizeof(multi_hash)); + } else { + struct dev_mc_list *dmi; + + memset(multi_hash, 0x00, sizeof(multi_hash)); + + for (dmi = dev->mc_list; dmi; dmi = dmi->next) + am79c961_mc_hash(dmi, multi_hash); + } + + spin_lock_irqsave(priv->chip_lock, flags); + + stopped = read_rreg(dev->base_addr, CSR0) & CSR0_STOP; + + if (!stopped) { + /* + * Put the chip into suspend mode + */ + write_rreg(dev->base_addr, CTRL1, CTRL1_SPND); + + /* + * Spin waiting for chip to report suspend mode + */ + while ((read_rreg(dev->base_addr, CTRL1) & CTRL1_SPND) == 0) { + spin_unlock_irqrestore(priv->chip_lock, flags); + nop(); + spin_lock_irqsave(priv->chip_lock, flags); + } + } + + /* + * Update the multicast hash table + */ + for (i = 0; i < sizeof(multi_hash) / sizeof(multi_hash[0]); i++) + write_rreg(dev->base_addr, i + LADRL, multi_hash[i]); + + /* + * Write the mode register + */ + write_rreg(dev->base_addr, MODE, mode); + + if (!stopped) { + /* + * Put the chip back into running mode + */ + write_rreg(dev->base_addr, CTRL1, 0); + } + + spin_unlock_irqrestore(priv->chip_lock, flags); +} + +static void am79c961_timeout(struct net_device *dev) +{ + printk(KERN_WARNING "%s: transmit timed out, network cable problem?\n", + dev->name); + + /* + * ought to do some setup of the tx side here + */ + + netif_wake_queue(dev); +} + +/* + * Transmit a packet + */ +static int +am79c961_sendpacket(struct sk_buff *skb, struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + unsigned int hdraddr, bufaddr; + unsigned int head; + unsigned long flags; + + head = priv->txhead; + hdraddr = priv->txhdr + (head << 3); + bufaddr = priv->txbuffer[head]; + head += 1; + if (head >= TX_BUFFERS) + head = 0; + + am_writebuffer (dev, bufaddr, skb->data, skb->len); + am_writeword (dev, hdraddr + 4, -skb->len); + am_writeword (dev, hdraddr + 2, TMD_OWN|TMD_STP|TMD_ENP); + priv->txhead = head; + + spin_lock_irqsave(priv->chip_lock, flags); + write_rreg (dev->base_addr, CSR0, CSR0_TDMD|CSR0_IENA); + dev->trans_start = jiffies; + spin_unlock_irqrestore(priv->chip_lock, flags); + + /* + * If the next packet is owned by the ethernet device, + * then the tx ring is full and we can't add another + * packet. + */ + if (am_readword(dev, priv->txhdr + (priv->txhead << 3) + 2) & TMD_OWN) + netif_stop_queue(dev); + + dev_kfree_skb(skb); + + return 0; +} + +/* + * If we have a good packet(s), get it/them out of the buffers. + */ +static void +am79c961_rx(struct net_device *dev, struct dev_priv *priv) +{ + do { + struct sk_buff *skb; + u_int hdraddr; + u_int pktaddr; + u_int status; + int len; + + hdraddr = priv->rxhdr + (priv->rxtail << 3); + pktaddr = priv->rxbuffer[priv->rxtail]; + + status = am_readword (dev, hdraddr + 2); + if (status & RMD_OWN) /* do we own it? */ + break; + + priv->rxtail ++; + if (priv->rxtail >= RX_BUFFERS) + priv->rxtail = 0; + + if ((status & (RMD_ERR|RMD_STP|RMD_ENP)) != (RMD_STP|RMD_ENP)) { + am_writeword (dev, hdraddr + 2, RMD_OWN); + priv->stats.rx_errors ++; + if (status & RMD_ERR) { + if (status & RMD_FRAM) + priv->stats.rx_frame_errors ++; + if (status & RMD_CRC) + priv->stats.rx_crc_errors ++; + } else if (status & RMD_STP) + priv->stats.rx_length_errors ++; + continue; + } + + len = am_readword(dev, hdraddr + 6); + skb = dev_alloc_skb(len + 2); + + if (skb) { + skb->dev = dev; + skb_reserve(skb, 2); + + am_readbuffer(dev, pktaddr, skb_put(skb, len), len); + am_writeword(dev, hdraddr + 2, RMD_OWN); + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + dev->last_rx = jiffies; + priv->stats.rx_bytes += len; + priv->stats.rx_packets ++; + } else { + am_writeword (dev, hdraddr + 2, RMD_OWN); + printk (KERN_WARNING "%s: memory squeeze, dropping packet.\n", dev->name); + priv->stats.rx_dropped ++; + break; + } + } while (1); +} + +/* + * Update stats for the transmitted packet + */ +static void +am79c961_tx(struct net_device *dev, struct dev_priv *priv) +{ + do { + short len; + u_int hdraddr; + u_int status; + + hdraddr = priv->txhdr + (priv->txtail << 3); + status = am_readword (dev, hdraddr + 2); + if (status & TMD_OWN) + break; + + priv->txtail ++; + if (priv->txtail >= TX_BUFFERS) + priv->txtail = 0; + + if (status & TMD_ERR) { + u_int status2; + + priv->stats.tx_errors ++; + + status2 = am_readword (dev, hdraddr + 6); + + /* + * Clear the error byte + */ + am_writeword (dev, hdraddr + 6, 0); + + if (status2 & TST_RTRY) + priv->stats.collisions += 16; + if (status2 & TST_LCOL) + priv->stats.tx_window_errors ++; + if (status2 & TST_LCAR) + priv->stats.tx_carrier_errors ++; + if (status2 & TST_UFLO) + priv->stats.tx_fifo_errors ++; + continue; + } + priv->stats.tx_packets ++; + len = am_readword (dev, hdraddr + 4); + priv->stats.tx_bytes += -len; + } while (priv->txtail != priv->txhead); + + netif_wake_queue(dev); +} + +static irqreturn_t +am79c961_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct net_device *dev = (struct net_device *)dev_id; + struct dev_priv *priv = netdev_priv(dev); + u_int status, n = 100; + int handled = 0; + + do { + status = read_rreg(dev->base_addr, CSR0); + write_rreg(dev->base_addr, CSR0, status & + (CSR0_IENA|CSR0_TINT|CSR0_RINT| + CSR0_MERR|CSR0_MISS|CSR0_CERR|CSR0_BABL)); + + if (status & CSR0_RINT) { + handled = 1; + am79c961_rx(dev, priv); + } + if (status & CSR0_TINT) { + handled = 1; + am79c961_tx(dev, priv); + } + if (status & CSR0_MISS) { + handled = 1; + priv->stats.rx_dropped ++; + } + if (status & CSR0_CERR) { + handled = 1; + mod_timer(&priv->timer, jiffies); + } + } while (--n && status & (CSR0_RINT | CSR0_TINT)); + + return IRQ_RETVAL(handled); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void am79c961_poll_controller(struct net_device *dev) +{ + unsigned long flags; + local_irq_save(flags); + am79c961_interrupt(dev->irq, dev, NULL); + local_irq_restore(flags); +} +#endif + +/* + * Initialise the chip. Note that we always expect + * to be entered with interrupts enabled. + */ +static int +am79c961_hw_init(struct net_device *dev) +{ + struct dev_priv *priv = netdev_priv(dev); + + spin_lock_irq(&priv->chip_lock); + write_rreg (dev->base_addr, CSR0, CSR0_STOP); + write_rreg (dev->base_addr, CSR3, CSR3_MASKALL); + spin_unlock_irq(&priv->chip_lock); + + am79c961_ramtest(dev, 0x66); + am79c961_ramtest(dev, 0x99); + + return 0; +} + +static void __init am79c961_banner(void) +{ + static unsigned version_printed; + + if (net_debug && version_printed++ == 0) + printk(KERN_INFO "%s", version); +} + +static int __init am79c961_init(void) +{ + struct net_device *dev; + struct dev_priv *priv; + int i, ret; + + dev = alloc_etherdev(sizeof(struct dev_priv)); + ret = -ENOMEM; + if (!dev) + goto out; + + priv = netdev_priv(dev); + + /* + * Fixed address and IRQ lines here. + * The PNP initialisation should have been + * done by the ether bootp loader. + */ + dev->base_addr = 0x220; + dev->irq = IRQ_EBSA110_ETHERNET; + + ret = -ENODEV; + if (!request_region(dev->base_addr, 0x18, dev->name)) + goto nodev; + + /* + * Reset the device. + */ + inb(dev->base_addr + NET_RESET); + udelay(5); + + /* + * Check the manufacturer part of the + * ether address. + */ + if (inb(dev->base_addr) != 0x08 || + inb(dev->base_addr + 2) != 0x00 || + inb(dev->base_addr + 4) != 0x2b) + goto release; + + am79c961_banner(); + printk(KERN_INFO "%s: ether address ", dev->name); + + /* Retrive and print the ethernet address. */ + for (i = 0; i < 6; i++) { + dev->dev_addr[i] = inb(dev->base_addr + i * 2) & 0xff; + printk (i == 5 ? "%02x\n" : "%02x:", dev->dev_addr[i]); + } + + spin_lock_init(&priv->chip_lock); + init_timer(&priv->timer); + priv->timer.data = (unsigned long)dev; + priv->timer.function = am79c961_timer; + + if (am79c961_hw_init(dev)) + goto release; + + dev->open = am79c961_open; + dev->stop = am79c961_close; + dev->hard_start_xmit = am79c961_sendpacket; + dev->get_stats = am79c961_getstats; + dev->set_multicast_list = am79c961_setmulticastlist; + dev->tx_timeout = am79c961_timeout; +#ifdef CONFIG_NET_POLL_CONTROLLER + dev->poll_controller = am79c961_poll_controller; +#endif + + ret = register_netdev(dev); + if (ret == 0) + return 0; + +release: + release_region(dev->base_addr, 0x18); +nodev: + free_netdev(dev); +out: + return ret; +} + +__initcall(am79c961_init); diff --git a/drivers/net/arm/am79c961a.h b/drivers/net/arm/am79c961a.h new file mode 100644 index 000000000000..1e9b05050cbe --- /dev/null +++ b/drivers/net/arm/am79c961a.h @@ -0,0 +1,148 @@ +/* + * linux/drivers/net/am79c961.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _LINUX_am79c961a_H +#define _LINUX_am79c961a_H + +/* use 0 for production, 1 for verification, >2 for debug. debug flags: */ +#define DEBUG_TX 2 +#define DEBUG_RX 4 +#define DEBUG_INT 8 +#define DEBUG_IC 16 +#ifndef NET_DEBUG +#define NET_DEBUG 0 +#endif + +#define NET_UID 0 +#define NET_RDP 0x10 +#define NET_RAP 0x12 +#define NET_RESET 0x14 +#define NET_IDP 0x16 + +/* + * RAP registers + */ +#define CSR0 0 +#define CSR0_INIT 0x0001 +#define CSR0_STRT 0x0002 +#define CSR0_STOP 0x0004 +#define CSR0_TDMD 0x0008 +#define CSR0_TXON 0x0010 +#define CSR0_RXON 0x0020 +#define CSR0_IENA 0x0040 +#define CSR0_INTR 0x0080 +#define CSR0_IDON 0x0100 +#define CSR0_TINT 0x0200 +#define CSR0_RINT 0x0400 +#define CSR0_MERR 0x0800 +#define CSR0_MISS 0x1000 +#define CSR0_CERR 0x2000 +#define CSR0_BABL 0x4000 +#define CSR0_ERR 0x8000 + +#define CSR3 3 +#define CSR3_EMBA 0x0008 +#define CSR3_DXMT2PD 0x0010 +#define CSR3_LAPPEN 0x0020 +#define CSR3_DXSUFLO 0x0040 +#define CSR3_IDONM 0x0100 +#define CSR3_TINTM 0x0200 +#define CSR3_RINTM 0x0400 +#define CSR3_MERRM 0x0800 +#define CSR3_MISSM 0x1000 +#define CSR3_BABLM 0x4000 +#define CSR3_MASKALL 0x5F00 + +#define CSR4 4 +#define CSR4_JABM 0x0001 +#define CSR4_JAB 0x0002 +#define CSR4_TXSTRTM 0x0004 +#define CSR4_TXSTRT 0x0008 +#define CSR4_RCVCCOM 0x0010 +#define CSR4_RCVCCO 0x0020 +#define CSR4_MFCOM 0x0100 +#define CSR4_MFCO 0x0200 +#define CSR4_ASTRP_RCV 0x0400 +#define CSR4_APAD_XMIT 0x0800 + +#define CTRL1 5 +#define CTRL1_SPND 0x0001 + +#define LADRL 8 +#define LADRM1 9 +#define LADRM2 10 +#define LADRH 11 +#define PADRL 12 +#define PADRM 13 +#define PADRH 14 + +#define MODE 15 +#define MODE_DISRX 0x0001 +#define MODE_DISTX 0x0002 +#define MODE_LOOP 0x0004 +#define MODE_DTCRC 0x0008 +#define MODE_COLL 0x0010 +#define MODE_DRETRY 0x0020 +#define MODE_INTLOOP 0x0040 +#define MODE_PORT_AUI 0x0000 +#define MODE_PORT_10BT 0x0080 +#define MODE_DRXPA 0x2000 +#define MODE_DRXBA 0x4000 +#define MODE_PROMISC 0x8000 + +#define BASERXL 24 +#define BASERXH 25 +#define BASETXL 30 +#define BASETXH 31 + +#define POLLINT 47 + +#define SIZERXR 76 +#define SIZETXR 78 + +#define CSR_MFC 112 + +#define RMD_ENP 0x0100 +#define RMD_STP 0x0200 +#define RMD_CRC 0x0800 +#define RMD_FRAM 0x2000 +#define RMD_ERR 0x4000 +#define RMD_OWN 0x8000 + +#define TMD_ENP 0x0100 +#define TMD_STP 0x0200 +#define TMD_MORE 0x1000 +#define TMD_ERR 0x4000 +#define TMD_OWN 0x8000 + +#define TST_RTRY 0x0400 +#define TST_LCAR 0x0800 +#define TST_LCOL 0x1000 +#define TST_UFLO 0x4000 +#define TST_BUFF 0x8000 + +#define ISALED0 0x0004 +#define ISALED0_LNKST 0x8000 + +struct dev_priv { + struct net_device_stats stats; + unsigned long rxbuffer[RX_BUFFERS]; + unsigned long txbuffer[TX_BUFFERS]; + unsigned char txhead; + unsigned char txtail; + unsigned char rxhead; + unsigned char rxtail; + unsigned long rxhdr; + unsigned long txhdr; + spinlock_t chip_lock; + struct timer_list timer; +}; + +extern int am79c961_probe (struct net_device *dev); + +#endif diff --git a/drivers/net/arm/ether00.c b/drivers/net/arm/ether00.c new file mode 100644 index 000000000000..4f1f4e31bda5 --- /dev/null +++ b/drivers/net/arm/ether00.c @@ -0,0 +1,1017 @@ +/* + * drivers/net/ether00.c + * + * Copyright (C) 2001 Altera Corporation + * + * 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 program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* includes */ +#include <linux/config.h> +#include <linux/pci.h> +#include <linux/sched.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/etherdevice.h> +#include <linux/module.h> +#include <linux/tqueue.h> +#include <linux/mtd/mtd.h> +#include <linux/pld/pld_hotswap.h> +#include <asm/arch/excalibur.h> +#include <asm/arch/hardware.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/sizes.h> + +#include <asm/arch/ether00.h> +#include <asm/arch/tdkphy.h> + + +MODULE_AUTHOR("Clive Davies"); +MODULE_DESCRIPTION("Altera Ether00 IP core driver"); +MODULE_LICENSE("GPL"); + +#define PKT_BUF_SZ 1540 /* Size of each rx buffer */ +#define ETH_NR 4 /* Number of MACs this driver supports */ + +#define DEBUG(x) + +#define __dma_va(x) (unsigned int)((unsigned int)priv->dma_data+(((unsigned int)(x))&(EXC_SPSRAM_BLOCK0_SIZE-1))) +#define __dma_pa(x) (unsigned int)(EXC_SPSRAM_BLOCK0_BASE+(((unsigned int)(x))-(unsigned int)priv->dma_data)) + +#define ETHER00_BASE 0 +#define ETHER00_TYPE +#define ETHER00_NAME "ether00" +#define MAC_REG_SIZE 0x400 /* size of MAC register area */ + + + +/* typedefs */ + +/* The definition of the driver control structure */ + +#define RX_NUM_BUFF 10 +#define RX_NUM_FDESC 10 +#define TX_NUM_FDESC 10 + +struct tx_fda_ent{ + FDA_DESC fd; + BUF_DESC bd; + BUF_DESC pad; +}; +struct rx_fda_ent{ + FDA_DESC fd; + BUF_DESC bd; + BUF_DESC pad; +}; +struct rx_blist_ent{ + FDA_DESC fd; + BUF_DESC bd; + BUF_DESC pad; +}; +struct net_priv +{ + struct net_device_stats stats; + struct sk_buff* skb; + void* dma_data; + struct rx_blist_ent* rx_blist_vp; + struct rx_fda_ent* rx_fda_ptr; + struct tx_fda_ent* tx_fdalist_vp; + struct tq_struct tq_memupdate; + unsigned char memupdate_scheduled; + unsigned char rx_disabled; + unsigned char queue_stopped; + spinlock_t rx_lock; +}; + +static const char vendor_id[2]={0x07,0xed}; + +#ifdef ETHER00_DEBUG + +/* Dump (most) registers for debugging puposes */ + +static void dump_regs(struct net_device *dev){ + struct net_priv* priv=dev->priv; + unsigned int* i; + + printk("\n RX free descriptor area:\n"); + + for(i=(unsigned int*)priv->rx_fda_ptr; + i<((unsigned int*)(priv->rx_fda_ptr+RX_NUM_FDESC));){ + printk("%#8x %#8x %#8x %#8x\n",*i,*(i+1),*(i+2),*(i+3)); + i+=4; + } + + printk("\n RX buffer list:\n"); + + for(i=(unsigned int*)priv->rx_blist_vp; + i<((unsigned int*)(priv->rx_blist_vp+RX_NUM_BUFF));){ + printk("%#8x %#8x %#8x %#8x\n",*i,*(i+1),*(i+2),*(i+3)); + i+=4; + } + + printk("\n TX frame descriptor list:\n"); + + for(i=(unsigned int*)priv->tx_fdalist_vp; + i<((unsigned int*)(priv->tx_fdalist_vp+TX_NUM_FDESC));){ + printk("%#8x %#8x %#8x %#8x\n",*i,*(i+1),*(i+2),*(i+3)); + i+=4; + } + + printk("\ndma ctl=%#x\n",readw(ETHER_DMA_CTL(dev->base_addr))); + printk("txfrmptr=%#x\n",readw(ETHER_TXFRMPTR(dev->base_addr))); + printk("txthrsh=%#x\n",readw(ETHER_TXTHRSH(dev->base_addr))); + printk("txpollctr=%#x\n",readw(ETHER_TXPOLLCTR(dev->base_addr))); + printk("blfrmptr=%#x\n",readw(ETHER_BLFRMPTR(dev->base_addr))); + printk("rxfragsize=%#x\n",readw(ETHER_RXFRAGSIZE(dev->base_addr))); + printk("tx_int_en=%#x\n",readw(ETHER_INT_EN(dev->base_addr))); + printk("fda_bas=%#x\n",readw(ETHER_FDA_BAS(dev->base_addr))); + printk("fda_lim=%#x\n",readw(ETHER_FDA_LIM(dev->base_addr))); + printk("int_src=%#x\n",readw(ETHER_INT_SRC(dev->base_addr))); + printk("pausecnt=%#x\n",readw(ETHER_PAUSECNT(dev->base_addr))); + printk("rempaucnt=%#x\n",readw(ETHER_REMPAUCNT(dev->base_addr))); + printk("txconfrmstat=%#x\n",readw(ETHER_TXCONFRMSTAT(dev->base_addr))); + printk("mac_ctl=%#x\n",readw(ETHER_MAC_CTL(dev->base_addr))); + printk("arc_ctl=%#x\n",readw(ETHER_ARC_CTL(dev->base_addr))); + printk("tx_ctl=%#x\n",readw(ETHER_TX_CTL(dev->base_addr))); +} +#endif /* ETHER00_DEBUG */ + + +static int ether00_write_phy(struct net_device *dev, short address, short value) +{ + volatile int count = 1024; + writew(value,ETHER_MD_DATA(dev->base_addr)); + writew( ETHER_MD_CA_BUSY_MSK | + ETHER_MD_CA_WR_MSK | + (address & ETHER_MD_CA_ADDR_MSK), + ETHER_MD_CA(dev->base_addr)); + + /* Wait for the command to complete */ + while((readw(ETHER_MD_CA(dev->base_addr)) & ETHER_MD_CA_BUSY_MSK)&&count){ + count--; + } + if (!count){ + printk("Write to phy failed, addr=%#x, data=%#x\n",address, value); + return -EIO; + } + return 0; +} + +static int ether00_read_phy(struct net_device *dev, short address) +{ + volatile int count = 1024; + writew( ETHER_MD_CA_BUSY_MSK | + (address & ETHER_MD_CA_ADDR_MSK), + ETHER_MD_CA(dev->base_addr)); + + /* Wait for the command to complete */ + while((readw(ETHER_MD_CA(dev->base_addr)) & ETHER_MD_CA_BUSY_MSK)&&count){ + count--; + } + if (!count){ + printk(KERN_WARNING "Read from phy timed out\n"); + return -EIO; + } + return readw(ETHER_MD_DATA(dev->base_addr)); +} + +static void ether00_phy_int(int irq_num, void* dev_id, struct pt_regs* regs) +{ + struct net_device* dev=dev_id; + int irq_status; + + irq_status=ether00_read_phy(dev, PHY_IRQ_CONTROL); + + if(irq_status & PHY_IRQ_CONTROL_ANEG_COMP_INT_MSK){ + /* + * Autonegotiation complete on epxa10db. The mac doesn't + * twig if we're in full duplex so we need to check the + * phy status register and configure the mac accordingly + */ + if(ether00_read_phy(dev, PHY_STATUS)&(PHY_STATUS_10T_F_MSK|PHY_STATUS_100_X_F_MSK)){ + int tmp; + tmp=readl(ETHER_MAC_CTL(dev->base_addr)); + writel(tmp|ETHER_MAC_CTL_FULLDUP_MSK,ETHER_MAC_CTL(dev->base_addr)); + } + } + + if(irq_status&PHY_IRQ_CONTROL_LS_CHG_INT_MSK){ + + if(ether00_read_phy(dev, PHY_STATUS)& PHY_STATUS_LINK_MSK){ + /* Link is up */ + netif_carrier_on(dev); + //printk("Carrier on\n"); + }else{ + netif_carrier_off(dev); + //printk("Carrier off\n"); + + } + } + +} + +static void setup_blist_entry(struct sk_buff* skb,struct rx_blist_ent* blist_ent_ptr){ + /* Make the buffer consistent with the cache as the mac is going to write + * directly into it*/ + blist_ent_ptr->fd.FDSystem=(unsigned int)skb; + blist_ent_ptr->bd.BuffData=(char*)__pa(skb->data); + consistent_sync(skb->data,PKT_BUF_SZ,PCI_DMA_FROMDEVICE); + /* align IP on 16 Byte (DMA_CTL set to skip 2 bytes) */ + skb_reserve(skb,2); + blist_ent_ptr->bd.BuffLength=PKT_BUF_SZ-2; + blist_ent_ptr->fd.FDLength=1; + blist_ent_ptr->fd.FDCtl=FDCTL_COWNSFD_MSK; + blist_ent_ptr->bd.BDCtl=BDCTL_COWNSBD_MSK; +} + + +static int ether00_mem_init(struct net_device* dev) +{ + struct net_priv* priv=dev->priv; + struct tx_fda_ent *tx_fd_ptr,*tx_end_ptr; + struct rx_blist_ent* blist_ent_ptr; + int i; + + /* + * Grab a block of on chip SRAM to contain the control stuctures for + * the ethernet MAC. This uncached becuase it needs to be accesses by both + * bus masters (cpu + mac). However, it shouldn't matter too much in terms + * of speed as its on chip memory + */ + priv->dma_data=ioremap_nocache(EXC_SPSRAM_BLOCK0_BASE,EXC_SPSRAM_BLOCK0_SIZE ); + if (!priv->dma_data) + return -ENOMEM; + + priv->rx_fda_ptr=(struct rx_fda_ent*)priv->dma_data; + /* + * Now share it out amongst the Frame descriptors and the buffer list + */ + priv->rx_blist_vp=(struct rx_blist_ent*)((unsigned int)priv->dma_data+RX_NUM_FDESC*sizeof(struct rx_fda_ent)); + + /* + *Initalise the FDA list + */ + /* set ownership to the controller */ + memset(priv->rx_fda_ptr,0x80,RX_NUM_FDESC*sizeof(struct rx_fda_ent)); + + /* + *Initialise the buffer list + */ + blist_ent_ptr=priv->rx_blist_vp; + i=0; + while(blist_ent_ptr<(priv->rx_blist_vp+RX_NUM_BUFF)){ + struct sk_buff *skb; + blist_ent_ptr->fd.FDLength=1; + skb=dev_alloc_skb(PKT_BUF_SZ); + if(skb){ + setup_blist_entry(skb,blist_ent_ptr); + blist_ent_ptr->fd.FDNext=(FDA_DESC*)__dma_pa(blist_ent_ptr+1); + blist_ent_ptr->bd.BDStat=i++; + blist_ent_ptr++; + } + else + { + printk("Failed to initalise buffer list\n"); + } + + } + blist_ent_ptr--; + blist_ent_ptr->fd.FDNext=(FDA_DESC*)__dma_pa(priv->rx_blist_vp); + + priv->tx_fdalist_vp=(struct tx_fda_ent*)(priv->rx_blist_vp+RX_NUM_BUFF); + + /* Initialise the buffers to be a circular list. The mac will then go poll + * the list until it finds a frame ready to transmit */ + tx_end_ptr=priv->tx_fdalist_vp+TX_NUM_FDESC; + for(tx_fd_ptr=priv->tx_fdalist_vp;tx_fd_ptr<tx_end_ptr;tx_fd_ptr++){ + tx_fd_ptr->fd.FDNext=(FDA_DESC*)__dma_pa((tx_fd_ptr+1)); + tx_fd_ptr->fd.FDCtl=1; + tx_fd_ptr->fd.FDStat=0; + tx_fd_ptr->fd.FDLength=1; + + } + /* Change the last FDNext pointer to make a circular list */ + tx_fd_ptr--; + tx_fd_ptr->fd.FDNext=(FDA_DESC*)__dma_pa(priv->tx_fdalist_vp); + + /* Point the device at the chain of Rx and Tx Buffers */ + writel((unsigned int)__dma_pa(priv->rx_fda_ptr),ETHER_FDA_BAS(dev->base_addr)); + writel((RX_NUM_FDESC-1)*sizeof(struct rx_fda_ent),ETHER_FDA_LIM(dev->base_addr)); + writel((unsigned int)__dma_pa(priv->rx_blist_vp),ETHER_BLFRMPTR(dev->base_addr)); + + writel((unsigned int)__dma_pa(priv->tx_fdalist_vp),ETHER_TXFRMPTR(dev->base_addr)); + + return 0; +} + + +void ether00_mem_update(void* dev_id) +{ + struct net_device* dev=dev_id; + struct net_priv* priv=dev->priv; + struct sk_buff* skb; + struct tx_fda_ent *fda_ptr=priv->tx_fdalist_vp; + struct rx_blist_ent* blist_ent_ptr; + unsigned long flags; + + priv->tq_memupdate.sync=0; + //priv->tq_memupdate.list= + priv->memupdate_scheduled=0; + + /* Transmit interrupt */ + while(fda_ptr<(priv->tx_fdalist_vp+TX_NUM_FDESC)){ + if(!(FDCTL_COWNSFD_MSK&fda_ptr->fd.FDCtl) && (ETHER_TX_STAT_COMP_MSK&fda_ptr->fd.FDStat)){ + priv->stats.tx_packets++; + priv->stats.tx_bytes+=fda_ptr->bd.BuffLength; + skb=(struct sk_buff*)fda_ptr->fd.FDSystem; + //printk("%d:txcln:fda=%#x skb=%#x\n",jiffies,fda_ptr,skb); + dev_kfree_skb(skb); + fda_ptr->fd.FDSystem=0; + fda_ptr->fd.FDStat=0; + fda_ptr->fd.FDCtl=0; + } + fda_ptr++; + } + /* Fill in any missing buffers from the received queue */ + spin_lock_irqsave(&priv->rx_lock,flags); + blist_ent_ptr=priv->rx_blist_vp; + while(blist_ent_ptr<(priv->rx_blist_vp+RX_NUM_BUFF)){ + /* fd.FDSystem of 0 indicates we failed to allocate the buffer in the ISR */ + if(!blist_ent_ptr->fd.FDSystem){ + struct sk_buff *skb; + skb=dev_alloc_skb(PKT_BUF_SZ); + blist_ent_ptr->fd.FDSystem=(unsigned int)skb; + if(skb){ + setup_blist_entry(skb,blist_ent_ptr); + } + else + { + break; + } + } + blist_ent_ptr++; + } + spin_unlock_irqrestore(&priv->rx_lock,flags); + if(priv->queue_stopped){ + //printk("%d:cln:start q\n",jiffies); + netif_start_queue(dev); + } + if(priv->rx_disabled){ + //printk("%d:enable_irq\n",jiffies); + priv->rx_disabled=0; + writel(ETHER_RX_CTL_RXEN_MSK,ETHER_RX_CTL(dev->base_addr)); + + } +} + + +static void ether00_int( int irq_num, void* dev_id, struct pt_regs* regs) +{ + struct net_device* dev=dev_id; + struct net_priv* priv=dev->priv; + + unsigned int interruptValue; + + interruptValue=readl(ETHER_INT_SRC(dev->base_addr)); + + //printk("INT_SRC=%x\n",interruptValue); + + if(!(readl(ETHER_INT_SRC(dev->base_addr)) & ETHER_INT_SRC_IRQ_MSK)) + { + return; /* Interrupt wasn't caused by us!! */ + } + + if(readl(ETHER_INT_SRC(dev->base_addr))& + (ETHER_INT_SRC_INTMACRX_MSK | + ETHER_INT_SRC_FDAEX_MSK | + ETHER_INT_SRC_BLEX_MSK)) { + struct rx_blist_ent* blist_ent_ptr; + struct rx_fda_ent* fda_ent_ptr; + struct sk_buff* skb; + + fda_ent_ptr=priv->rx_fda_ptr; + spin_lock(&priv->rx_lock); + while(fda_ent_ptr<(priv->rx_fda_ptr+RX_NUM_FDESC)){ + int result; + + if(!(fda_ent_ptr->fd.FDCtl&FDCTL_COWNSFD_MSK)) + { + /* This frame is ready for processing */ + /*find the corresponding buffer in the bufferlist */ + blist_ent_ptr=priv->rx_blist_vp+fda_ent_ptr->bd.BDStat; + skb=(struct sk_buff*)blist_ent_ptr->fd.FDSystem; + + /* Pass this skb up the stack */ + skb->dev=dev; + skb_put(skb,fda_ent_ptr->fd.FDLength); + skb->protocol=eth_type_trans(skb,dev); + skb->ip_summed=CHECKSUM_UNNECESSARY; + result=netif_rx(skb); + /* Update statistics */ + priv->stats.rx_packets++; + priv->stats.rx_bytes+=fda_ent_ptr->fd.FDLength; + + /* Free the FDA entry */ + fda_ent_ptr->bd.BDStat=0xff; + fda_ent_ptr->fd.FDCtl=FDCTL_COWNSFD_MSK; + + /* Allocate a new skb and point the bd entry to it */ + blist_ent_ptr->fd.FDSystem=0; + skb=dev_alloc_skb(PKT_BUF_SZ); + //printk("allocskb=%#x\n",skb); + if(skb){ + setup_blist_entry(skb,blist_ent_ptr); + + } + else if(!priv->memupdate_scheduled){ + int tmp; + /* There are no buffers at the moment, so schedule */ + /* the background task to sort this out */ + schedule_task(&priv->tq_memupdate); + priv->memupdate_scheduled=1; + printk(KERN_DEBUG "%s:No buffers",dev->name); + /* If this interrupt was due to a lack of buffers then + * we'd better stop the receiver too */ + if(interruptValueÐER_INT_SRC_BLEX_MSK){ + priv->rx_disabled=1; + tmp=readl(ETHER_INT_SRC(dev->base_addr)); + writel(tmp&~ETHER_RX_CTL_RXEN_MSK,ETHER_RX_CTL(dev->base_addr)); + printk(KERN_DEBUG "%s:Halting rx",dev->name); + } + + } + + } + fda_ent_ptr++; + } + spin_unlock(&priv->rx_lock); + + /* Clear the interrupts */ + writel(ETHER_INT_SRC_INTMACRX_MSK | ETHER_INT_SRC_FDAEX_MSK + | ETHER_INT_SRC_BLEX_MSK,ETHER_INT_SRC(dev->base_addr)); + + } + + if(readl(ETHER_INT_SRC(dev->base_addr))ÐER_INT_SRC_INTMACTX_MSK){ + + if(!priv->memupdate_scheduled){ + schedule_task(&priv->tq_memupdate); + priv->memupdate_scheduled=1; + } + /* Clear the interrupt */ + writel(ETHER_INT_SRC_INTMACTX_MSK,ETHER_INT_SRC(dev->base_addr)); + } + + if (readl(ETHER_INT_SRC(dev->base_addr)) & (ETHER_INT_SRC_SWINT_MSK| + ETHER_INT_SRC_INTEARNOT_MSK| + ETHER_INT_SRC_INTLINK_MSK| + ETHER_INT_SRC_INTEXBD_MSK| + ETHER_INT_SRC_INTTXCTLCMP_MSK)) + { + /* + * Not using any of these so they shouldn't happen + * + * In the cased of INTEXBD - if you allocate more + * than 28 decsriptors you may need to think about this + */ + printk("Not using this interrupt\n"); + } + + if (readl(ETHER_INT_SRC(dev->base_addr)) & + (ETHER_INT_SRC_INTSBUS_MSK | + ETHER_INT_SRC_INTNRABT_MSK + |ETHER_INT_SRC_DMPARERR_MSK)) + { + /* + * Hardware errors, we can either ignore them and hope they go away + *or reset the device, I'll try the first for now to see if they happen + */ + printk("Hardware error\n"); + } +} + +static void ether00_setup_ethernet_address(struct net_device* dev) +{ + int tmp; + + dev->addr_len=6; + writew(0,ETHER_ARC_ADR(dev->base_addr)); + writel((dev->dev_addr[0]<<24) | + (dev->dev_addr[1]<<16) | + (dev->dev_addr[2]<<8) | + dev->dev_addr[3], + ETHER_ARC_DATA(dev->base_addr)); + + writew(4,ETHER_ARC_ADR(dev->base_addr)); + tmp=readl(ETHER_ARC_DATA(dev->base_addr)); + tmp&=0xffff; + tmp|=(dev->dev_addr[4]<<24) | (dev->dev_addr[5]<<16); + writel(tmp, ETHER_ARC_DATA(dev->base_addr)); + /* Enable this entry in the ARC */ + + writel(1,ETHER_ARC_ENA(dev->base_addr)); + + return; +} + + +static void ether00_reset(struct net_device *dev) +{ + /* reset the controller */ + writew(ETHER_MAC_CTL_RESET_MSK,ETHER_MAC_CTL(dev->base_addr)); + + /* + * Make sure we're not going to send anything + */ + + writew(ETHER_TX_CTL_TXHALT_MSK,ETHER_TX_CTL(dev->base_addr)); + + /* + * Make sure we're not going to receive anything + */ + writew(ETHER_RX_CTL_RXHALT_MSK,ETHER_RX_CTL(dev->base_addr)); + + /* + * Disable Interrupts for now, and set the burst size to 8 bytes + */ + + writel(ETHER_DMA_CTL_INTMASK_MSK | + ((8 << ETHER_DMA_CTL_DMBURST_OFST) & ETHER_DMA_CTL_DMBURST_MSK) + |(2<<ETHER_DMA_CTL_RXALIGN_OFST), + ETHER_DMA_CTL(dev->base_addr)); + + + /* + * Set TxThrsh - start transmitting a packet after 1514 + * bytes or when a packet is complete, whichever comes first + */ + writew(1514,ETHER_TXTHRSH(dev->base_addr)); + + /* + * Set TxPollCtr. Each cycle is + * 61.44 microseconds with a 33 MHz bus + */ + writew(1,ETHER_TXPOLLCTR(dev->base_addr)); + + /* + * Set Rx_Ctl - Turn off reception and let RxData turn it + * on later + */ + writew(ETHER_RX_CTL_RXHALT_MSK,ETHER_RX_CTL(dev->base_addr)); + +} + + +static void ether00_set_multicast(struct net_device* dev) +{ + int count=dev->mc_count; + + /* Set promiscuous mode if it's asked for. */ + + if (dev->flags&IFF_PROMISC){ + + writew( ETHER_ARC_CTL_COMPEN_MSK | + ETHER_ARC_CTL_BROADACC_MSK | + ETHER_ARC_CTL_GROUPACC_MSK | + ETHER_ARC_CTL_STATIONACC_MSK, + ETHER_ARC_CTL(dev->base_addr)); + return; + } + + /* + * Get all multicast packets if required, or if there are too + * many addresses to fit in hardware + */ + if (dev->flags & IFF_ALLMULTI){ + writew( ETHER_ARC_CTL_COMPEN_MSK | + ETHER_ARC_CTL_GROUPACC_MSK | + ETHER_ARC_CTL_BROADACC_MSK, + ETHER_ARC_CTL(dev->base_addr)); + return; + } + if (dev->mc_count > (ETHER_ARC_SIZE - 1)){ + + printk(KERN_WARNING "Too many multicast addresses for hardware to filter - receiving all multicast packets\n"); + writew( ETHER_ARC_CTL_COMPEN_MSK | + ETHER_ARC_CTL_GROUPACC_MSK | + ETHER_ARC_CTL_BROADACC_MSK, + ETHER_ARC_CTL(dev->base_addr)); + return; + } + + if(dev->mc_count){ + struct dev_mc_list *mc_list_ent=dev->mc_list; + unsigned int temp,i; + DEBUG(printk("mc_count=%d mc_list=%#x\n",dev-> mc_count, dev->mc_list)); + DEBUG(printk("mc addr=%02#x%02x%02x%02x%02x%02x\n", + mc_list_ent->dmi_addr[5], + mc_list_ent->dmi_addr[4], + mc_list_ent->dmi_addr[3], + mc_list_ent->dmi_addr[2], + mc_list_ent->dmi_addr[1], + mc_list_ent->dmi_addr[0]);) + + /* + * The first 6 bytes are the MAC address, so + * don't change them! + */ + writew(4,ETHER_ARC_ADR(dev->base_addr)); + temp=readl(ETHER_ARC_DATA(dev->base_addr)); + temp&=0xffff0000; + + /* Disable the current multicast stuff */ + writel(1,ETHER_ARC_ENA(dev->base_addr)); + + for(;;){ + temp|=mc_list_ent->dmi_addr[1] | + mc_list_ent->dmi_addr[0]<<8; + writel(temp,ETHER_ARC_DATA(dev->base_addr)); + + i=readl(ETHER_ARC_ADR(dev->base_addr)); + writew(i+4,ETHER_ARC_ADR(dev->base_addr)); + + temp=mc_list_ent->dmi_addr[5]| + mc_list_ent->dmi_addr[4]<<8 | + mc_list_ent->dmi_addr[3]<<16 | + mc_list_ent->dmi_addr[2]<<24; + writel(temp,ETHER_ARC_DATA(dev->base_addr)); + + count--; + if(!mc_list_ent->next || !count){ + break; + } + DEBUG(printk("mc_list_next=%#x\n",mc_list_ent->next);) + mc_list_ent=mc_list_ent->next; + + + i=readl(ETHER_ARC_ADR(dev->base_addr)); + writel(i+4,ETHER_ARC_ADR(dev->base_addr)); + + temp=mc_list_ent->dmi_addr[3]| + mc_list_ent->dmi_addr[2]<<8 | + mc_list_ent->dmi_addr[1]<<16 | + mc_list_ent->dmi_addr[0]<<24; + writel(temp,ETHER_ARC_DATA(dev->base_addr)); + + i=readl(ETHER_ARC_ADR(dev->base_addr)); + writel(i+4,ETHER_ARC_ADR(dev->base_addr)); + + temp=mc_list_ent->dmi_addr[4]<<16 | + mc_list_ent->dmi_addr[5]<<24; + + writel(temp,ETHER_ARC_DATA(dev->base_addr)); + + count--; + if(!mc_list_ent->next || !count){ + break; + } + mc_list_ent=mc_list_ent->next; + } + + + if(count) + printk(KERN_WARNING "Multicast list size error\n"); + + + writew( ETHER_ARC_CTL_BROADACC_MSK| + ETHER_ARC_CTL_COMPEN_MSK, + ETHER_ARC_CTL(dev->base_addr)); + + } + + /* enable the active ARC enties */ + writew((1<<(count+2))-1,ETHER_ARC_ENA(dev->base_addr)); +} + + +static int ether00_open(struct net_device* dev) +{ + int result,tmp; + struct net_priv* priv; + + if (!is_valid_ether_addr(dev->dev_addr)) + return -EINVAL; + + /* Install interrupt handlers */ + result=request_irq(dev->irq,ether00_int,0,"ether00",dev); + if(result) + goto open_err1; + + result=request_irq(2,ether00_phy_int,0,"ether00_phy",dev); + if(result) + goto open_err2; + + ether00_reset(dev); + result=ether00_mem_init(dev); + if(result) + goto open_err3; + + + ether00_setup_ethernet_address(dev); + + ether00_set_multicast(dev); + + result=ether00_write_phy(dev,PHY_CONTROL, PHY_CONTROL_ANEGEN_MSK | PHY_CONTROL_RANEG_MSK); + if(result) + goto open_err4; + result=ether00_write_phy(dev,PHY_IRQ_CONTROL, PHY_IRQ_CONTROL_LS_CHG_IE_MSK | + PHY_IRQ_CONTROL_ANEG_COMP_IE_MSK); + if(result) + goto open_err4; + + /* Start the device enable interrupts */ + writew(ETHER_RX_CTL_RXEN_MSK +// | ETHER_RX_CTL_STRIPCRC_MSK + | ETHER_RX_CTL_ENGOOD_MSK + | ETHER_RX_CTL_ENRXPAR_MSK| ETHER_RX_CTL_ENLONGERR_MSK + | ETHER_RX_CTL_ENOVER_MSK| ETHER_RX_CTL_ENCRCERR_MSK, + ETHER_RX_CTL(dev->base_addr)); + + writew(ETHER_TX_CTL_TXEN_MSK| + ETHER_TX_CTL_ENEXDEFER_MSK| + ETHER_TX_CTL_ENLCARR_MSK| + ETHER_TX_CTL_ENEXCOLL_MSK| + ETHER_TX_CTL_ENLATECOLL_MSK| + ETHER_TX_CTL_ENTXPAR_MSK| + ETHER_TX_CTL_ENCOMP_MSK, + ETHER_TX_CTL(dev->base_addr)); + + tmp=readl(ETHER_DMA_CTL(dev->base_addr)); + writel(tmp&~ETHER_DMA_CTL_INTMASK_MSK,ETHER_DMA_CTL(dev->base_addr)); + + return 0; + + open_err4: + ether00_reset(dev); + open_err3: + free_irq(2,dev); + open_err2: + free_irq(dev->irq,dev); + open_err1: + return result; + +} + + +static int ether00_tx(struct sk_buff* skb, struct net_device* dev) +{ + struct net_priv *priv=dev->priv; + struct tx_fda_ent *fda_ptr; + int i; + + + /* + * Find an empty slot in which to stick the frame + */ + fda_ptr=(struct tx_fda_ent*)__dma_va(readl(ETHER_TXFRMPTR(dev->base_addr))); + i=0; + while(i<TX_NUM_FDESC){ + if (fda_ptr->fd.FDStat||(fda_ptr->fd.FDCtl & FDCTL_COWNSFD_MSK)){ + fda_ptr =(struct tx_fda_ent*) __dma_va((struct tx_fda_ent*)fda_ptr->fd.FDNext); + } + else { + break; + } + i++; + } + + /* Write the skb data from the cache*/ + consistent_sync(skb->data,skb->len,PCI_DMA_TODEVICE); + fda_ptr->bd.BuffData=(char*)__pa(skb->data); + fda_ptr->bd.BuffLength=(unsigned short)skb->len; + /* Save the pointer to the skb for freeing later */ + fda_ptr->fd.FDSystem=(unsigned int)skb; + fda_ptr->fd.FDStat=0; + /* Pass ownership of the buffers to the controller */ + fda_ptr->fd.FDCtl=1; + fda_ptr->fd.FDCtl|=FDCTL_COWNSFD_MSK; + + /* If the next buffer in the list is full, stop the queue */ + fda_ptr=(struct tx_fda_ent*)__dma_va(fda_ptr->fd.FDNext); + if ((fda_ptr->fd.FDStat)||(fda_ptr->fd.FDCtl & FDCTL_COWNSFD_MSK)){ + netif_stop_queue(dev); + priv->queue_stopped=1; + } + + return 0; +} + +static struct net_device_stats *ether00_stats(struct net_device* dev) +{ + struct net_priv *priv=dev->priv; + return &priv->stats; +} + + +static int ether00_stop(struct net_device* dev) +{ + struct net_priv *priv=dev->priv; + int tmp; + + /* Stop/disable the device. */ + tmp=readw(ETHER_RX_CTL(dev->base_addr)); + tmp&=~(ETHER_RX_CTL_RXEN_MSK | ETHER_RX_CTL_ENGOOD_MSK); + tmp|=ETHER_RX_CTL_RXHALT_MSK; + writew(tmp,ETHER_RX_CTL(dev->base_addr)); + + tmp=readl(ETHER_TX_CTL(dev->base_addr)); + tmp&=~ETHER_TX_CTL_TXEN_MSK; + tmp|=ETHER_TX_CTL_TXHALT_MSK; + writel(tmp,ETHER_TX_CTL(dev->base_addr)); + + /* Free up system resources */ + free_irq(dev->irq,dev); + free_irq(2,dev); + iounmap(priv->dma_data); + + return 0; +} + + +static void ether00_get_ethernet_address(struct net_device* dev) +{ + struct mtd_info *mymtd=NULL; + int i; + size_t retlen; + + /* + * For the Epxa10 dev board (camelot), the ethernet MAC + * address is of the form 00:aa:aa:00:xx:xx where + * 00:aa:aa is the Altera vendor ID and xx:xx is the + * last 2 bytes of the board serial number, as programmed + * into the OTP area of the flash device on EBI1. If this + * isn't an expa10 dev board, or there's no mtd support to + * read the serial number from flash then we'll force the + * use to set their own mac address using ifconfig. + */ + +#ifdef CONFIG_ARCH_CAMELOT +#ifdef CONFIG_MTD + /* get the mtd_info structure for the first mtd device*/ + for(i=0;i<MAX_MTD_DEVICES;i++){ + mymtd=get_mtd_device(NULL,i); + if(!mymtd||!strcmp(mymtd->name,"EPXA10DB flash")) + break; + } + + if(!mymtd || !mymtd->read_user_prot_reg){ + printk(KERN_WARNING "%s: Failed to read MAC address from flash\n",dev->name); + }else{ + mymtd->read_user_prot_reg(mymtd,2,1,&retlen,&dev->dev_addr[5]); + mymtd->read_user_prot_reg(mymtd,3,1,&retlen,&dev->dev_addr[4]); + dev->dev_addr[3]=0; + dev->dev_addr[2]=vendor_id[1]; + dev->dev_addr[1]=vendor_id[0]; + dev->dev_addr[0]=0; + } +#else + printk(KERN_WARNING "%s: MTD support required to read MAC address from EPXA10 dev board\n", dev->name); +#endif +#endif + + if (!is_valid_ether_addr(dev->dev_addr)) + printk("%s: Invalid ethernet MAC address. Please set using " + "ifconfig\n", dev->name); + +} + +/* + * Keep a mapping of dev_info addresses -> port lines to use when + * removing ports dev==NULL indicates unused entry + */ + + +static struct net_device* dev_list[ETH_NR]; + +static int ether00_add_device(struct pldhs_dev_info* dev_info,void* dev_ps_data) +{ + struct net_device *dev; + struct net_priv *priv; + void *map_addr; + int result; + int i; + + i=0; + while(dev_list[i] && i < ETH_NR) + i++; + + if(i==ETH_NR){ + printk(KERN_WARNING "ether00: Maximum number of ports reached\n"); + return 0; + } + + + if (!request_mem_region(dev_info->base_addr, MAC_REG_SIZE, "ether00")) + return -EBUSY; + + dev = alloc_etherdev(sizeof(struct net_priv)); + if(!dev) { + result = -ENOMEM; + goto out_release; + } + priv = dev->priv; + + priv->tq_memupdate.routine=ether00_mem_update; + priv->tq_memupdate.data=(void*) dev; + + spin_lock_init(&priv->rx_lock); + + map_addr=ioremap_nocache(dev_info->base_addr,SZ_4K); + if(!map_addr){ + result = -ENOMEM; + out_kfree; + } + + dev->open=ether00_open; + dev->stop=ether00_stop; + dev->set_multicast_list=ether00_set_multicast; + dev->hard_start_xmit=ether00_tx; + dev->get_stats=ether00_stats; + + ether00_get_ethernet_address(dev); + + SET_MODULE_OWNER(dev); + + dev->base_addr=(unsigned int)map_addr; + dev->irq=dev_info->irq; + dev->features=NETIF_F_DYNALLOC | NETIF_F_HW_CSUM; + + result=register_netdev(dev); + if(result){ + printk("Ether00: Error %i registering driver\n",result); + goto out_unmap; + } + printk("registered ether00 device at %#x\n",dev_info->base_addr); + + dev_list[i]=dev; + + return result; + + out_unmap: + iounmap(map_addr); + out_kfree: + free_netdev(dev); + out_release: + release_mem_region(dev_info->base_addr, MAC_REG_SIZE); + return result; +} + + +static int ether00_remove_devices(void) +{ + int i; + + for(i=0;i<ETH_NR;i++){ + if(dev_list[i]){ + netif_device_detach(dev_list[i]); + unregister_netdev(dev_list[i]); + iounmap((void*)dev_list[i]->base_addr); + release_mem_region(dev_list[i]->base_addr, MAC_REG_SIZE); + free_netdev(dev_list[i]); + dev_list[i]=0; + } + } + return 0; +} + +static struct pld_hotswap_ops ether00_pldhs_ops={ + .name = ETHER00_NAME, + .add_device = ether00_add_device, + .remove_devices = ether00_remove_devices, +}; + + +static void __exit ether00_cleanup_module(void) +{ + int result; + result=ether00_remove_devices(); + if(result) + printk(KERN_WARNING "ether00: failed to remove all devices\n"); + + pldhs_unregister_driver(ETHER00_NAME); +} +module_exit(ether00_cleanup_module); + + +static int __init ether00_mod_init(void) +{ + printk("mod init\n"); + return pldhs_register_driver(ðer00_pldhs_ops); + +} + +module_init(ether00_mod_init); + diff --git a/drivers/net/arm/ether1.c b/drivers/net/arm/ether1.c new file mode 100644 index 000000000000..36475eb2727f --- /dev/null +++ b/drivers/net/arm/ether1.c @@ -0,0 +1,1110 @@ +/* + * linux/drivers/acorn/net/ether1.c + * + * Copyright (C) 1996-2000 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Acorn ether1 driver (82586 chip) for Acorn machines + * + * We basically keep two queues in the cards memory - one for transmit + * and one for receive. Each has a head and a tail. The head is where + * we/the chip adds packets to be transmitted/received, and the tail + * is where the transmitter has got to/where the receiver will stop. + * Both of these queues are circular, and since the chip is running + * all the time, we have to be careful when we modify the pointers etc + * so that the buffer memory contents is valid all the time. + * + * Change log: + * 1.00 RMK Released + * 1.01 RMK 19/03/1996 Transfers the last odd byte onto/off of the card now. + * 1.02 RMK 25/05/1997 Added code to restart RU if it goes not ready + * 1.03 RMK 14/09/1997 Cleaned up the handling of a reset during the TX interrupt. + * Should prevent lockup. + * 1.04 RMK 17/09/1997 Added more info when initialsation of chip goes wrong. + * TDR now only reports failure when chip reports non-zero + * TDR time-distance. + * 1.05 RMK 31/12/1997 Removed calls to dev_tint for 2.1 + * 1.06 RMK 10/02/2000 Updated for 2.3.43 + * 1.07 RMK 13/05/2000 Updated for 2.3.99-pre8 + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ptrace.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/bitops.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/dma.h> +#include <asm/ecard.h> + +#define __ETHER1_C +#include "ether1.h" + +static unsigned int net_debug = NET_DEBUG; + +#define BUFFER_SIZE 0x10000 +#define TX_AREA_START 0x00100 +#define TX_AREA_END 0x05000 +#define RX_AREA_START 0x05000 +#define RX_AREA_END 0x0fc00 + +static int ether1_open(struct net_device *dev); +static int ether1_sendpacket(struct sk_buff *skb, struct net_device *dev); +static irqreturn_t ether1_interrupt(int irq, void *dev_id, struct pt_regs *regs); +static int ether1_close(struct net_device *dev); +static struct net_device_stats *ether1_getstats(struct net_device *dev); +static void ether1_setmulticastlist(struct net_device *dev); +static void ether1_timeout(struct net_device *dev); + +/* ------------------------------------------------------------------------- */ + +static char version[] __initdata = "ether1 ethernet driver (c) 2000 Russell King v1.07\n"; + +#define BUS_16 16 +#define BUS_8 8 + +/* ------------------------------------------------------------------------- */ + +#define DISABLEIRQS 1 +#define NORMALIRQS 0 + +#define ether1_readw(dev, addr, type, offset, svflgs) ether1_inw_p (dev, addr + (int)(&((type *)0)->offset), svflgs) +#define ether1_writew(dev, val, addr, type, offset, svflgs) ether1_outw_p (dev, val, addr + (int)(&((type *)0)->offset), svflgs) + +static inline unsigned short +ether1_inw_p (struct net_device *dev, int addr, int svflgs) +{ + unsigned long flags; + unsigned short ret; + + if (svflgs) + local_irq_save (flags); + + writeb(addr >> 12, REG_PAGE); + ret = readw(ETHER1_RAM + ((addr & 4095) << 1)); + if (svflgs) + local_irq_restore (flags); + return ret; +} + +static inline void +ether1_outw_p (struct net_device *dev, unsigned short val, int addr, int svflgs) +{ + unsigned long flags; + + if (svflgs) + local_irq_save (flags); + + writeb(addr >> 12, REG_PAGE); + writew(val, ETHER1_RAM + ((addr & 4095) << 1)); + if (svflgs) + local_irq_restore (flags); +} + +/* + * Some inline assembler to allow fast transfers on to/off of the card. + * Since this driver depends on some features presented by the ARM + * specific architecture, and that you can't configure this driver + * without specifiing ARM mode, this is not a problem. + * + * This routine is essentially an optimised memcpy from the card's + * onboard RAM to kernel memory. + */ +static void +ether1_writebuffer (struct net_device *dev, void *data, unsigned int start, unsigned int length) +{ + unsigned int page, thislen, offset; + void __iomem *addr; + + offset = start & 4095; + page = start >> 12; + addr = ETHER1_RAM + (offset << 1); + + if (offset + length > 4096) + thislen = 4096 - offset; + else + thislen = length; + + do { + int used; + + writeb(page, REG_PAGE); + length -= thislen; + + __asm__ __volatile__( + "subs %3, %3, #2\n\ + bmi 2f\n\ +1: ldr %0, [%1], #2\n\ + mov %0, %0, lsl #16\n\ + orr %0, %0, %0, lsr #16\n\ + str %0, [%2], #4\n\ + subs %3, %3, #2\n\ + bmi 2f\n\ + ldr %0, [%1], #2\n\ + mov %0, %0, lsl #16\n\ + orr %0, %0, %0, lsr #16\n\ + str %0, [%2], #4\n\ + subs %3, %3, #2\n\ + bmi 2f\n\ + ldr %0, [%1], #2\n\ + mov %0, %0, lsl #16\n\ + orr %0, %0, %0, lsr #16\n\ + str %0, [%2], #4\n\ + subs %3, %3, #2\n\ + bmi 2f\n\ + ldr %0, [%1], #2\n\ + mov %0, %0, lsl #16\n\ + orr %0, %0, %0, lsr #16\n\ + str %0, [%2], #4\n\ + subs %3, %3, #2\n\ + bpl 1b\n\ +2: adds %3, %3, #1\n\ + ldreqb %0, [%1]\n\ + streqb %0, [%2]" + : "=&r" (used), "=&r" (data) + : "r" (addr), "r" (thislen), "1" (data)); + + addr = ETHER1_RAM; + + thislen = length; + if (thislen > 4096) + thislen = 4096; + page++; + } while (thislen); +} + +static void +ether1_readbuffer (struct net_device *dev, void *data, unsigned int start, unsigned int length) +{ + unsigned int page, thislen, offset; + void __iomem *addr; + + offset = start & 4095; + page = start >> 12; + addr = ETHER1_RAM + (offset << 1); + + if (offset + length > 4096) + thislen = 4096 - offset; + else + thislen = length; + + do { + int used; + + writeb(page, REG_PAGE); + length -= thislen; + + __asm__ __volatile__( + "subs %3, %3, #2\n\ + bmi 2f\n\ +1: ldr %0, [%2], #4\n\ + strb %0, [%1], #1\n\ + mov %0, %0, lsr #8\n\ + strb %0, [%1], #1\n\ + subs %3, %3, #2\n\ + bmi 2f\n\ + ldr %0, [%2], #4\n\ + strb %0, [%1], #1\n\ + mov %0, %0, lsr #8\n\ + strb %0, [%1], #1\n\ + subs %3, %3, #2\n\ + bmi 2f\n\ + ldr %0, [%2], #4\n\ + strb %0, [%1], #1\n\ + mov %0, %0, lsr #8\n\ + strb %0, [%1], #1\n\ + subs %3, %3, #2\n\ + bmi 2f\n\ + ldr %0, [%2], #4\n\ + strb %0, [%1], #1\n\ + mov %0, %0, lsr #8\n\ + strb %0, [%1], #1\n\ + subs %3, %3, #2\n\ + bpl 1b\n\ +2: adds %3, %3, #1\n\ + ldreqb %0, [%2]\n\ + streqb %0, [%1]" + : "=&r" (used), "=&r" (data) + : "r" (addr), "r" (thislen), "1" (data)); + + addr = ETHER1_RAM; + + thislen = length; + if (thislen > 4096) + thislen = 4096; + page++; + } while (thislen); +} + +static int __init +ether1_ramtest(struct net_device *dev, unsigned char byte) +{ + unsigned char *buffer = kmalloc (BUFFER_SIZE, GFP_KERNEL); + int i, ret = BUFFER_SIZE; + int max_errors = 15; + int bad = -1; + int bad_start = 0; + + if (!buffer) + return 1; + + memset (buffer, byte, BUFFER_SIZE); + ether1_writebuffer (dev, buffer, 0, BUFFER_SIZE); + memset (buffer, byte ^ 0xff, BUFFER_SIZE); + ether1_readbuffer (dev, buffer, 0, BUFFER_SIZE); + + for (i = 0; i < BUFFER_SIZE; i++) { + if (buffer[i] != byte) { + if (max_errors >= 0 && bad != buffer[i]) { + if (bad != -1) + printk ("\n"); + printk (KERN_CRIT "%s: RAM failed with (%02X instead of %02X) at 0x%04X", + dev->name, buffer[i], byte, i); + ret = -ENODEV; + max_errors --; + bad = buffer[i]; + bad_start = i; + } + } else { + if (bad != -1) { + if (bad_start == i - 1) + printk ("\n"); + else + printk (" - 0x%04X\n", i - 1); + bad = -1; + } + } + } + + if (bad != -1) + printk (" - 0x%04X\n", BUFFER_SIZE); + kfree (buffer); + + return ret; +} + +static int +ether1_reset (struct net_device *dev) +{ + writeb(CTRL_RST|CTRL_ACK, REG_CONTROL); + return BUS_16; +} + +static int __init +ether1_init_2(struct net_device *dev) +{ + int i; + dev->mem_start = 0; + + i = ether1_ramtest (dev, 0x5a); + + if (i > 0) + i = ether1_ramtest (dev, 0x1e); + + if (i <= 0) + return -ENODEV; + + dev->mem_end = i; + return 0; +} + +/* + * These are the structures that are loaded into the ether RAM card to + * initialise the 82586 + */ + +/* at 0x0100 */ +#define NOP_ADDR (TX_AREA_START) +#define NOP_SIZE (0x06) +static nop_t init_nop = { + 0, + CMD_NOP, + NOP_ADDR +}; + +/* at 0x003a */ +#define TDR_ADDR (0x003a) +#define TDR_SIZE (0x08) +static tdr_t init_tdr = { + 0, + CMD_TDR | CMD_INTR, + NOP_ADDR, + 0 +}; + +/* at 0x002e */ +#define MC_ADDR (0x002e) +#define MC_SIZE (0x0c) +static mc_t init_mc = { + 0, + CMD_SETMULTICAST, + TDR_ADDR, + 0, + { { 0, } } +}; + +/* at 0x0022 */ +#define SA_ADDR (0x0022) +#define SA_SIZE (0x0c) +static sa_t init_sa = { + 0, + CMD_SETADDRESS, + MC_ADDR, + { 0, } +}; + +/* at 0x0010 */ +#define CFG_ADDR (0x0010) +#define CFG_SIZE (0x12) +static cfg_t init_cfg = { + 0, + CMD_CONFIG, + SA_ADDR, + 8, + 8, + CFG8_SRDY, + CFG9_PREAMB8 | CFG9_ADDRLENBUF | CFG9_ADDRLEN(6), + 0, + 0x60, + 0, + CFG13_RETRY(15) | CFG13_SLOTH(2), + 0, +}; + +/* at 0x0000 */ +#define SCB_ADDR (0x0000) +#define SCB_SIZE (0x10) +static scb_t init_scb = { + 0, + SCB_CMDACKRNR | SCB_CMDACKCNA | SCB_CMDACKFR | SCB_CMDACKCX, + CFG_ADDR, + RX_AREA_START, + 0, + 0, + 0, + 0 +}; + +/* at 0xffee */ +#define ISCP_ADDR (0xffee) +#define ISCP_SIZE (0x08) +static iscp_t init_iscp = { + 1, + SCB_ADDR, + 0x0000, + 0x0000 +}; + +/* at 0xfff6 */ +#define SCP_ADDR (0xfff6) +#define SCP_SIZE (0x0a) +static scp_t init_scp = { + SCP_SY_16BBUS, + { 0, 0 }, + ISCP_ADDR, + 0 +}; + +#define RFD_SIZE (0x16) +static rfd_t init_rfd = { + 0, + 0, + 0, + 0, + { 0, }, + { 0, }, + 0 +}; + +#define RBD_SIZE (0x0a) +static rbd_t init_rbd = { + 0, + 0, + 0, + 0, + ETH_FRAME_LEN + 8 +}; + +#define TX_SIZE (0x08) +#define TBD_SIZE (0x08) + +static int +ether1_init_for_open (struct net_device *dev) +{ + int i, status, addr, next, next2; + int failures = 0; + unsigned long timeout; + + writeb(CTRL_RST|CTRL_ACK, REG_CONTROL); + + for (i = 0; i < 6; i++) + init_sa.sa_addr[i] = dev->dev_addr[i]; + + /* load data structures into ether1 RAM */ + ether1_writebuffer (dev, &init_scp, SCP_ADDR, SCP_SIZE); + ether1_writebuffer (dev, &init_iscp, ISCP_ADDR, ISCP_SIZE); + ether1_writebuffer (dev, &init_scb, SCB_ADDR, SCB_SIZE); + ether1_writebuffer (dev, &init_cfg, CFG_ADDR, CFG_SIZE); + ether1_writebuffer (dev, &init_sa, SA_ADDR, SA_SIZE); + ether1_writebuffer (dev, &init_mc, MC_ADDR, MC_SIZE); + ether1_writebuffer (dev, &init_tdr, TDR_ADDR, TDR_SIZE); + ether1_writebuffer (dev, &init_nop, NOP_ADDR, NOP_SIZE); + + if (ether1_readw(dev, CFG_ADDR, cfg_t, cfg_command, NORMALIRQS) != CMD_CONFIG) { + printk (KERN_ERR "%s: detected either RAM fault or compiler bug\n", + dev->name); + return 1; + } + + /* + * setup circularly linked list of { rfd, rbd, buffer }, with + * all rfds circularly linked, rbds circularly linked. + * First rfd is linked to scp, first rbd is linked to first + * rfd. Last rbd has a suspend command. + */ + addr = RX_AREA_START; + do { + next = addr + RFD_SIZE + RBD_SIZE + ETH_FRAME_LEN + 10; + next2 = next + RFD_SIZE + RBD_SIZE + ETH_FRAME_LEN + 10; + + if (next2 >= RX_AREA_END) { + next = RX_AREA_START; + init_rfd.rfd_command = RFD_CMDEL | RFD_CMDSUSPEND; + priv(dev)->rx_tail = addr; + } else + init_rfd.rfd_command = 0; + if (addr == RX_AREA_START) + init_rfd.rfd_rbdoffset = addr + RFD_SIZE; + else + init_rfd.rfd_rbdoffset = 0; + init_rfd.rfd_link = next; + init_rbd.rbd_link = next + RFD_SIZE; + init_rbd.rbd_bufl = addr + RFD_SIZE + RBD_SIZE; + + ether1_writebuffer (dev, &init_rfd, addr, RFD_SIZE); + ether1_writebuffer (dev, &init_rbd, addr + RFD_SIZE, RBD_SIZE); + addr = next; + } while (next2 < RX_AREA_END); + + priv(dev)->tx_link = NOP_ADDR; + priv(dev)->tx_head = NOP_ADDR + NOP_SIZE; + priv(dev)->tx_tail = TDR_ADDR; + priv(dev)->rx_head = RX_AREA_START; + + /* release reset & give 586 a prod */ + priv(dev)->resetting = 1; + priv(dev)->initialising = 1; + writeb(CTRL_RST, REG_CONTROL); + writeb(0, REG_CONTROL); + writeb(CTRL_CA, REG_CONTROL); + + /* 586 should now unset iscp.busy */ + timeout = jiffies + HZ/2; + while (ether1_readw(dev, ISCP_ADDR, iscp_t, iscp_busy, DISABLEIRQS) == 1) { + if (time_after(jiffies, timeout)) { + printk (KERN_WARNING "%s: can't initialise 82586: iscp is busy\n", dev->name); + return 1; + } + } + + /* check status of commands that we issued */ + timeout += HZ/10; + while (((status = ether1_readw(dev, CFG_ADDR, cfg_t, cfg_status, DISABLEIRQS)) + & STAT_COMPLETE) == 0) { + if (time_after(jiffies, timeout)) + break; + } + + if ((status & (STAT_COMPLETE | STAT_OK)) != (STAT_COMPLETE | STAT_OK)) { + printk (KERN_WARNING "%s: can't initialise 82586: config status %04X\n", dev->name, status); + printk (KERN_DEBUG "%s: SCB=[STS=%04X CMD=%04X CBL=%04X RFA=%04X]\n", dev->name, + ether1_readw(dev, SCB_ADDR, scb_t, scb_status, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_command, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_cbl_offset, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_rfa_offset, NORMALIRQS)); + failures += 1; + } + + timeout += HZ/10; + while (((status = ether1_readw(dev, SA_ADDR, sa_t, sa_status, DISABLEIRQS)) + & STAT_COMPLETE) == 0) { + if (time_after(jiffies, timeout)) + break; + } + + if ((status & (STAT_COMPLETE | STAT_OK)) != (STAT_COMPLETE | STAT_OK)) { + printk (KERN_WARNING "%s: can't initialise 82586: set address status %04X\n", dev->name, status); + printk (KERN_DEBUG "%s: SCB=[STS=%04X CMD=%04X CBL=%04X RFA=%04X]\n", dev->name, + ether1_readw(dev, SCB_ADDR, scb_t, scb_status, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_command, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_cbl_offset, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_rfa_offset, NORMALIRQS)); + failures += 1; + } + + timeout += HZ/10; + while (((status = ether1_readw(dev, MC_ADDR, mc_t, mc_status, DISABLEIRQS)) + & STAT_COMPLETE) == 0) { + if (time_after(jiffies, timeout)) + break; + } + + if ((status & (STAT_COMPLETE | STAT_OK)) != (STAT_COMPLETE | STAT_OK)) { + printk (KERN_WARNING "%s: can't initialise 82586: set multicast status %04X\n", dev->name, status); + printk (KERN_DEBUG "%s: SCB=[STS=%04X CMD=%04X CBL=%04X RFA=%04X]\n", dev->name, + ether1_readw(dev, SCB_ADDR, scb_t, scb_status, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_command, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_cbl_offset, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_rfa_offset, NORMALIRQS)); + failures += 1; + } + + timeout += HZ; + while (((status = ether1_readw(dev, TDR_ADDR, tdr_t, tdr_status, DISABLEIRQS)) + & STAT_COMPLETE) == 0) { + if (time_after(jiffies, timeout)) + break; + } + + if ((status & (STAT_COMPLETE | STAT_OK)) != (STAT_COMPLETE | STAT_OK)) { + printk (KERN_WARNING "%s: can't tdr (ignored)\n", dev->name); + printk (KERN_DEBUG "%s: SCB=[STS=%04X CMD=%04X CBL=%04X RFA=%04X]\n", dev->name, + ether1_readw(dev, SCB_ADDR, scb_t, scb_status, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_command, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_cbl_offset, NORMALIRQS), + ether1_readw(dev, SCB_ADDR, scb_t, scb_rfa_offset, NORMALIRQS)); + } else { + status = ether1_readw(dev, TDR_ADDR, tdr_t, tdr_result, DISABLEIRQS); + if (status & TDR_XCVRPROB) + printk (KERN_WARNING "%s: i/f failed tdr: transceiver problem\n", dev->name); + else if ((status & (TDR_SHORT|TDR_OPEN)) && (status & TDR_TIME)) { +#ifdef FANCY + printk (KERN_WARNING "%s: i/f failed tdr: cable %s %d.%d us away\n", dev->name, + status & TDR_SHORT ? "short" : "open", (status & TDR_TIME) / 10, + (status & TDR_TIME) % 10); +#else + printk (KERN_WARNING "%s: i/f failed tdr: cable %s %d clks away\n", dev->name, + status & TDR_SHORT ? "short" : "open", (status & TDR_TIME)); +#endif + } + } + + if (failures) + ether1_reset (dev); + return failures ? 1 : 0; +} + +/* ------------------------------------------------------------------------- */ + +static int +ether1_txalloc (struct net_device *dev, int size) +{ + int start, tail; + + size = (size + 1) & ~1; + tail = priv(dev)->tx_tail; + + if (priv(dev)->tx_head + size > TX_AREA_END) { + if (tail > priv(dev)->tx_head) + return -1; + start = TX_AREA_START; + if (start + size > tail) + return -1; + priv(dev)->tx_head = start + size; + } else { + if (priv(dev)->tx_head < tail && (priv(dev)->tx_head + size) > tail) + return -1; + start = priv(dev)->tx_head; + priv(dev)->tx_head += size; + } + + return start; +} + +static int +ether1_open (struct net_device *dev) +{ + if (!is_valid_ether_addr(dev->dev_addr)) { + printk(KERN_WARNING "%s: invalid ethernet MAC address\n", + dev->name); + return -EINVAL; + } + + if (request_irq(dev->irq, ether1_interrupt, 0, "ether1", dev)) + return -EAGAIN; + + memset (&priv(dev)->stats, 0, sizeof (struct net_device_stats)); + + if (ether1_init_for_open (dev)) { + free_irq (dev->irq, dev); + return -EAGAIN; + } + + netif_start_queue(dev); + + return 0; +} + +static void +ether1_timeout(struct net_device *dev) +{ + printk(KERN_WARNING "%s: transmit timeout, network cable problem?\n", + dev->name); + printk(KERN_WARNING "%s: resetting device\n", dev->name); + + ether1_reset (dev); + + if (ether1_init_for_open (dev)) + printk (KERN_ERR "%s: unable to restart interface\n", dev->name); + + priv(dev)->stats.tx_errors++; + netif_wake_queue(dev); +} + +static int +ether1_sendpacket (struct sk_buff *skb, struct net_device *dev) +{ + int tmp, tst, nopaddr, txaddr, tbdaddr, dataddr; + unsigned long flags; + tx_t tx; + tbd_t tbd; + nop_t nop; + + if (priv(dev)->restart) { + printk(KERN_WARNING "%s: resetting device\n", dev->name); + + ether1_reset(dev); + + if (ether1_init_for_open(dev)) + printk(KERN_ERR "%s: unable to restart interface\n", dev->name); + else + priv(dev)->restart = 0; + } + + if (skb->len < ETH_ZLEN) { + skb = skb_padto(skb, ETH_ZLEN); + if (skb == NULL) + goto out; + } + + /* + * insert packet followed by a nop + */ + txaddr = ether1_txalloc (dev, TX_SIZE); + tbdaddr = ether1_txalloc (dev, TBD_SIZE); + dataddr = ether1_txalloc (dev, skb->len); + nopaddr = ether1_txalloc (dev, NOP_SIZE); + + tx.tx_status = 0; + tx.tx_command = CMD_TX | CMD_INTR; + tx.tx_link = nopaddr; + tx.tx_tbdoffset = tbdaddr; + tbd.tbd_opts = TBD_EOL | skb->len; + tbd.tbd_link = I82586_NULL; + tbd.tbd_bufl = dataddr; + tbd.tbd_bufh = 0; + nop.nop_status = 0; + nop.nop_command = CMD_NOP; + nop.nop_link = nopaddr; + + local_irq_save(flags); + ether1_writebuffer (dev, &tx, txaddr, TX_SIZE); + ether1_writebuffer (dev, &tbd, tbdaddr, TBD_SIZE); + ether1_writebuffer (dev, skb->data, dataddr, skb->len); + ether1_writebuffer (dev, &nop, nopaddr, NOP_SIZE); + tmp = priv(dev)->tx_link; + priv(dev)->tx_link = nopaddr; + + /* now reset the previous nop pointer */ + ether1_writew(dev, txaddr, tmp, nop_t, nop_link, NORMALIRQS); + + local_irq_restore(flags); + + /* handle transmit */ + dev->trans_start = jiffies; + + /* check to see if we have room for a full sized ether frame */ + tmp = priv(dev)->tx_head; + tst = ether1_txalloc (dev, TX_SIZE + TBD_SIZE + NOP_SIZE + ETH_FRAME_LEN); + priv(dev)->tx_head = tmp; + dev_kfree_skb (skb); + + if (tst == -1) + netif_stop_queue(dev); + + out: + return 0; +} + +static void +ether1_xmit_done (struct net_device *dev) +{ + nop_t nop; + int caddr, tst; + + caddr = priv(dev)->tx_tail; + +again: + ether1_readbuffer (dev, &nop, caddr, NOP_SIZE); + + switch (nop.nop_command & CMD_MASK) { + case CMD_TDR: + /* special case */ + if (ether1_readw(dev, SCB_ADDR, scb_t, scb_cbl_offset, NORMALIRQS) + != (unsigned short)I82586_NULL) { + ether1_writew(dev, SCB_CMDCUCSTART | SCB_CMDRXSTART, SCB_ADDR, scb_t, + scb_command, NORMALIRQS); + writeb(CTRL_CA, REG_CONTROL); + } + priv(dev)->tx_tail = NOP_ADDR; + return; + + case CMD_NOP: + if (nop.nop_link == caddr) { + if (priv(dev)->initialising == 0) + printk (KERN_WARNING "%s: strange command complete with no tx command!\n", dev->name); + else + priv(dev)->initialising = 0; + return; + } + if (caddr == nop.nop_link) + return; + caddr = nop.nop_link; + goto again; + + case CMD_TX: + if (nop.nop_status & STAT_COMPLETE) + break; + printk (KERN_ERR "%s: strange command complete without completed command\n", dev->name); + priv(dev)->restart = 1; + return; + + default: + printk (KERN_WARNING "%s: strange command %d complete! (offset %04X)", dev->name, + nop.nop_command & CMD_MASK, caddr); + priv(dev)->restart = 1; + return; + } + + while (nop.nop_status & STAT_COMPLETE) { + if (nop.nop_status & STAT_OK) { + priv(dev)->stats.tx_packets ++; + priv(dev)->stats.collisions += (nop.nop_status & STAT_COLLISIONS); + } else { + priv(dev)->stats.tx_errors ++; + + if (nop.nop_status & STAT_COLLAFTERTX) + priv(dev)->stats.collisions ++; + if (nop.nop_status & STAT_NOCARRIER) + priv(dev)->stats.tx_carrier_errors ++; + if (nop.nop_status & STAT_TXLOSTCTS) + printk (KERN_WARNING "%s: cts lost\n", dev->name); + if (nop.nop_status & STAT_TXSLOWDMA) + priv(dev)->stats.tx_fifo_errors ++; + if (nop.nop_status & STAT_COLLEXCESSIVE) + priv(dev)->stats.collisions += 16; + } + + if (nop.nop_link == caddr) { + printk (KERN_ERR "%s: tx buffer chaining error: tx command points to itself\n", dev->name); + break; + } + + caddr = nop.nop_link; + ether1_readbuffer (dev, &nop, caddr, NOP_SIZE); + if ((nop.nop_command & CMD_MASK) != CMD_NOP) { + printk (KERN_ERR "%s: tx buffer chaining error: no nop after tx command\n", dev->name); + break; + } + + if (caddr == nop.nop_link) + break; + + caddr = nop.nop_link; + ether1_readbuffer (dev, &nop, caddr, NOP_SIZE); + if ((nop.nop_command & CMD_MASK) != CMD_TX) { + printk (KERN_ERR "%s: tx buffer chaining error: no tx command after nop\n", dev->name); + break; + } + } + priv(dev)->tx_tail = caddr; + + caddr = priv(dev)->tx_head; + tst = ether1_txalloc (dev, TX_SIZE + TBD_SIZE + NOP_SIZE + ETH_FRAME_LEN); + priv(dev)->tx_head = caddr; + if (tst != -1) + netif_wake_queue(dev); +} + +static void +ether1_recv_done (struct net_device *dev) +{ + int status; + int nexttail, rbdaddr; + rbd_t rbd; + + do { + status = ether1_readw(dev, priv(dev)->rx_head, rfd_t, rfd_status, NORMALIRQS); + if ((status & RFD_COMPLETE) == 0) + break; + + rbdaddr = ether1_readw(dev, priv(dev)->rx_head, rfd_t, rfd_rbdoffset, NORMALIRQS); + ether1_readbuffer (dev, &rbd, rbdaddr, RBD_SIZE); + + if ((rbd.rbd_status & (RBD_EOF | RBD_ACNTVALID)) == (RBD_EOF | RBD_ACNTVALID)) { + int length = rbd.rbd_status & RBD_ACNT; + struct sk_buff *skb; + + length = (length + 1) & ~1; + skb = dev_alloc_skb (length + 2); + + if (skb) { + skb->dev = dev; + skb_reserve (skb, 2); + + ether1_readbuffer (dev, skb_put (skb, length), rbd.rbd_bufl, length); + + skb->protocol = eth_type_trans (skb, dev); + netif_rx (skb); + priv(dev)->stats.rx_packets ++; + } else + priv(dev)->stats.rx_dropped ++; + } else { + printk(KERN_WARNING "%s: %s\n", dev->name, + (rbd.rbd_status & RBD_EOF) ? "oversized packet" : "acnt not valid"); + priv(dev)->stats.rx_dropped ++; + } + + nexttail = ether1_readw(dev, priv(dev)->rx_tail, rfd_t, rfd_link, NORMALIRQS); + /* nexttail should be rx_head */ + if (nexttail != priv(dev)->rx_head) + printk(KERN_ERR "%s: receiver buffer chaining error (%04X != %04X)\n", + dev->name, nexttail, priv(dev)->rx_head); + ether1_writew(dev, RFD_CMDEL | RFD_CMDSUSPEND, nexttail, rfd_t, rfd_command, NORMALIRQS); + ether1_writew(dev, 0, priv(dev)->rx_tail, rfd_t, rfd_command, NORMALIRQS); + ether1_writew(dev, 0, priv(dev)->rx_tail, rfd_t, rfd_status, NORMALIRQS); + ether1_writew(dev, 0, priv(dev)->rx_tail, rfd_t, rfd_rbdoffset, NORMALIRQS); + + priv(dev)->rx_tail = nexttail; + priv(dev)->rx_head = ether1_readw(dev, priv(dev)->rx_head, rfd_t, rfd_link, NORMALIRQS); + } while (1); +} + +static irqreturn_t +ether1_interrupt (int irq, void *dev_id, struct pt_regs *regs) +{ + struct net_device *dev = (struct net_device *)dev_id; + int status; + + status = ether1_readw(dev, SCB_ADDR, scb_t, scb_status, NORMALIRQS); + + if (status) { + ether1_writew(dev, status & (SCB_STRNR | SCB_STCNA | SCB_STFR | SCB_STCX), + SCB_ADDR, scb_t, scb_command, NORMALIRQS); + writeb(CTRL_CA | CTRL_ACK, REG_CONTROL); + if (status & SCB_STCX) { + ether1_xmit_done (dev); + } + if (status & SCB_STCNA) { + if (priv(dev)->resetting == 0) + printk (KERN_WARNING "%s: CU went not ready ???\n", dev->name); + else + priv(dev)->resetting += 1; + if (ether1_readw(dev, SCB_ADDR, scb_t, scb_cbl_offset, NORMALIRQS) + != (unsigned short)I82586_NULL) { + ether1_writew(dev, SCB_CMDCUCSTART, SCB_ADDR, scb_t, scb_command, NORMALIRQS); + writeb(CTRL_CA, REG_CONTROL); + } + if (priv(dev)->resetting == 2) + priv(dev)->resetting = 0; + } + if (status & SCB_STFR) { + ether1_recv_done (dev); + } + if (status & SCB_STRNR) { + if (ether1_readw(dev, SCB_ADDR, scb_t, scb_status, NORMALIRQS) & SCB_STRXSUSP) { + printk (KERN_WARNING "%s: RU went not ready: RU suspended\n", dev->name); + ether1_writew(dev, SCB_CMDRXRESUME, SCB_ADDR, scb_t, scb_command, NORMALIRQS); + writeb(CTRL_CA, REG_CONTROL); + priv(dev)->stats.rx_dropped ++; /* we suspended due to lack of buffer space */ + } else + printk(KERN_WARNING "%s: RU went not ready: %04X\n", dev->name, + ether1_readw(dev, SCB_ADDR, scb_t, scb_status, NORMALIRQS)); + printk (KERN_WARNING "RU ptr = %04X\n", ether1_readw(dev, SCB_ADDR, scb_t, scb_rfa_offset, + NORMALIRQS)); + } + } else + writeb(CTRL_ACK, REG_CONTROL); + + return IRQ_HANDLED; +} + +static int +ether1_close (struct net_device *dev) +{ + ether1_reset (dev); + + free_irq(dev->irq, dev); + + return 0; +} + +static struct net_device_stats * +ether1_getstats (struct net_device *dev) +{ + return &priv(dev)->stats; +} + +/* + * Set or clear the multicast filter for this adaptor. + * num_addrs == -1 Promiscuous mode, receive all packets. + * num_addrs == 0 Normal mode, clear multicast list. + * num_addrs > 0 Multicast mode, receive normal and MC packets, and do + * best-effort filtering. + */ +static void +ether1_setmulticastlist (struct net_device *dev) +{ +} + +/* ------------------------------------------------------------------------- */ + +static void __init ether1_banner(void) +{ + static unsigned int version_printed = 0; + + if (net_debug && version_printed++ == 0) + printk(KERN_INFO "%s", version); +} + +static int __devinit +ether1_probe(struct expansion_card *ec, const struct ecard_id *id) +{ + struct net_device *dev; + int i, ret = 0; + + ether1_banner(); + + ret = ecard_request_resources(ec); + if (ret) + goto out; + + dev = alloc_etherdev(sizeof(struct ether1_priv)); + if (!dev) { + ret = -ENOMEM; + goto release; + } + + SET_MODULE_OWNER(dev); + SET_NETDEV_DEV(dev, &ec->dev); + + dev->irq = ec->irq; + priv(dev)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST), + ecard_resource_len(ec, ECARD_RES_IOCFAST)); + if (!priv(dev)->base) { + ret = -ENOMEM; + goto free; + } + + if ((priv(dev)->bus_type = ether1_reset(dev)) == 0) { + ret = -ENODEV; + goto free; + } + + for (i = 0; i < 6; i++) + dev->dev_addr[i] = readb(IDPROM_ADDRESS + (i << 2)); + + if (ether1_init_2(dev)) { + ret = -ENODEV; + goto free; + } + + dev->open = ether1_open; + dev->stop = ether1_close; + dev->hard_start_xmit = ether1_sendpacket; + dev->get_stats = ether1_getstats; + dev->set_multicast_list = ether1_setmulticastlist; + dev->tx_timeout = ether1_timeout; + dev->watchdog_timeo = 5 * HZ / 100; + + ret = register_netdev(dev); + if (ret) + goto free; + + printk(KERN_INFO "%s: ether1 in slot %d, ", + dev->name, ec->slot_no); + + for (i = 0; i < 6; i++) + printk ("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':'); + + ecard_set_drvdata(ec, dev); + return 0; + + free: + if (priv(dev)->base) + iounmap(priv(dev)->base); + free_netdev(dev); + release: + ecard_release_resources(ec); + out: + return ret; +} + +static void __devexit ether1_remove(struct expansion_card *ec) +{ + struct net_device *dev = ecard_get_drvdata(ec); + + ecard_set_drvdata(ec, NULL); + + unregister_netdev(dev); + iounmap(priv(dev)->base); + free_netdev(dev); + ecard_release_resources(ec); +} + +static const struct ecard_id ether1_ids[] = { + { MANU_ACORN, PROD_ACORN_ETHER1 }, + { 0xffff, 0xffff } +}; + +static struct ecard_driver ether1_driver = { + .probe = ether1_probe, + .remove = __devexit_p(ether1_remove), + .id_table = ether1_ids, + .drv = { + .name = "ether1", + }, +}; + +static int __init ether1_init(void) +{ + return ecard_register_driver(ðer1_driver); +} + +static void __exit ether1_exit(void) +{ + ecard_remove_driver(ðer1_driver); +} + +module_init(ether1_init); +module_exit(ether1_exit); + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/arm/ether1.h b/drivers/net/arm/ether1.h new file mode 100644 index 000000000000..c8a4b2389d85 --- /dev/null +++ b/drivers/net/arm/ether1.h @@ -0,0 +1,281 @@ +/* + * linux/drivers/acorn/net/ether1.h + * + * Copyright (C) 1996 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Network driver for Acorn Ether1 cards. + */ + +#ifndef _LINUX_ether1_H +#define _LINUX_ether1_H + +#ifdef __ETHER1_C +/* use 0 for production, 1 for verification, >2 for debug */ +#ifndef NET_DEBUG +#define NET_DEBUG 0 +#endif + +#define priv(dev) ((struct ether1_priv *)netdev_priv(dev)) + +/* Page register */ +#define REG_PAGE (priv(dev)->base + 0x0000) + +/* Control register */ +#define REG_CONTROL (priv(dev)->base + 0x0004) +#define CTRL_RST 0x01 +#define CTRL_LOOPBACK 0x02 +#define CTRL_CA 0x04 +#define CTRL_ACK 0x08 + +#define ETHER1_RAM (priv(dev)->base + 0x2000) + +/* HW address */ +#define IDPROM_ADDRESS (priv(dev)->base + 0x0024) + +struct ether1_priv { + void __iomem *base; + struct net_device_stats stats; + unsigned int tx_link; + unsigned int tx_head; + volatile unsigned int tx_tail; + volatile unsigned int rx_head; + volatile unsigned int rx_tail; + unsigned char bus_type; + unsigned char resetting; + unsigned char initialising : 1; + unsigned char restart : 1; +}; + +#define I82586_NULL (-1) + +typedef struct { /* tdr */ + unsigned short tdr_status; + unsigned short tdr_command; + unsigned short tdr_link; + unsigned short tdr_result; +#define TDR_TIME (0x7ff) +#define TDR_SHORT (1 << 12) +#define TDR_OPEN (1 << 13) +#define TDR_XCVRPROB (1 << 14) +#define TDR_LNKOK (1 << 15) +} tdr_t; + +typedef struct { /* transmit */ + unsigned short tx_status; + unsigned short tx_command; + unsigned short tx_link; + unsigned short tx_tbdoffset; +} tx_t; + +typedef struct { /* tbd */ + unsigned short tbd_opts; +#define TBD_CNT (0x3fff) +#define TBD_EOL (1 << 15) + unsigned short tbd_link; + unsigned short tbd_bufl; + unsigned short tbd_bufh; +} tbd_t; + +typedef struct { /* rfd */ + unsigned short rfd_status; +#define RFD_NOEOF (1 << 6) +#define RFD_FRAMESHORT (1 << 7) +#define RFD_DMAOVRN (1 << 8) +#define RFD_NORESOURCES (1 << 9) +#define RFD_ALIGNERROR (1 << 10) +#define RFD_CRCERROR (1 << 11) +#define RFD_OK (1 << 13) +#define RFD_FDCONSUMED (1 << 14) +#define RFD_COMPLETE (1 << 15) + unsigned short rfd_command; +#define RFD_CMDSUSPEND (1 << 14) +#define RFD_CMDEL (1 << 15) + unsigned short rfd_link; + unsigned short rfd_rbdoffset; + unsigned char rfd_dest[6]; + unsigned char rfd_src[6]; + unsigned short rfd_len; +} rfd_t; + +typedef struct { /* rbd */ + unsigned short rbd_status; +#define RBD_ACNT (0x3fff) +#define RBD_ACNTVALID (1 << 14) +#define RBD_EOF (1 << 15) + unsigned short rbd_link; + unsigned short rbd_bufl; + unsigned short rbd_bufh; + unsigned short rbd_len; +} rbd_t; + +typedef struct { /* nop */ + unsigned short nop_status; + unsigned short nop_command; + unsigned short nop_link; +} nop_t; + +typedef struct { /* set multicast */ + unsigned short mc_status; + unsigned short mc_command; + unsigned short mc_link; + unsigned short mc_cnt; + unsigned char mc_addrs[1][6]; +} mc_t; + +typedef struct { /* set address */ + unsigned short sa_status; + unsigned short sa_command; + unsigned short sa_link; + unsigned char sa_addr[6]; +} sa_t; + +typedef struct { /* config command */ + unsigned short cfg_status; + unsigned short cfg_command; + unsigned short cfg_link; + unsigned char cfg_bytecnt; /* size foll data: 4 - 12 */ + unsigned char cfg_fifolim; /* FIFO threshold */ + unsigned char cfg_byte8; +#define CFG8_SRDY (1 << 6) +#define CFG8_SAVEBADF (1 << 7) + unsigned char cfg_byte9; +#define CFG9_ADDRLEN(x) (x) +#define CFG9_ADDRLENBUF (1 << 3) +#define CFG9_PREAMB2 (0 << 4) +#define CFG9_PREAMB4 (1 << 4) +#define CFG9_PREAMB8 (2 << 4) +#define CFG9_PREAMB16 (3 << 4) +#define CFG9_ILOOPBACK (1 << 6) +#define CFG9_ELOOPBACK (1 << 7) + unsigned char cfg_byte10; +#define CFG10_LINPRI(x) (x) +#define CFG10_ACR(x) (x << 4) +#define CFG10_BOFMET (1 << 7) + unsigned char cfg_ifs; + unsigned char cfg_slotl; + unsigned char cfg_byte13; +#define CFG13_SLOTH(x) (x) +#define CFG13_RETRY(x) (x << 4) + unsigned char cfg_byte14; +#define CFG14_PROMISC (1 << 0) +#define CFG14_DISBRD (1 << 1) +#define CFG14_MANCH (1 << 2) +#define CFG14_TNCRS (1 << 3) +#define CFG14_NOCRC (1 << 4) +#define CFG14_CRC16 (1 << 5) +#define CFG14_BTSTF (1 << 6) +#define CFG14_FLGPAD (1 << 7) + unsigned char cfg_byte15; +#define CFG15_CSTF(x) (x) +#define CFG15_ICSS (1 << 3) +#define CFG15_CDTF(x) (x << 4) +#define CFG15_ICDS (1 << 7) + unsigned short cfg_minfrmlen; +} cfg_t; + +typedef struct { /* scb */ + unsigned short scb_status; /* status of 82586 */ +#define SCB_STRXMASK (7 << 4) /* Receive unit status */ +#define SCB_STRXIDLE (0 << 4) /* Idle */ +#define SCB_STRXSUSP (1 << 4) /* Suspended */ +#define SCB_STRXNRES (2 << 4) /* No resources */ +#define SCB_STRXRDY (4 << 4) /* Ready */ +#define SCB_STCUMASK (7 << 8) /* Command unit status */ +#define SCB_STCUIDLE (0 << 8) /* Idle */ +#define SCB_STCUSUSP (1 << 8) /* Suspended */ +#define SCB_STCUACTV (2 << 8) /* Active */ +#define SCB_STRNR (1 << 12) /* Receive unit not ready */ +#define SCB_STCNA (1 << 13) /* Command unit not ready */ +#define SCB_STFR (1 << 14) /* Frame received */ +#define SCB_STCX (1 << 15) /* Command completed */ + unsigned short scb_command; /* Next command */ +#define SCB_CMDRXSTART (1 << 4) /* Start (at rfa_offset) */ +#define SCB_CMDRXRESUME (2 << 4) /* Resume reception */ +#define SCB_CMDRXSUSPEND (3 << 4) /* Suspend reception */ +#define SCB_CMDRXABORT (4 << 4) /* Abort reception */ +#define SCB_CMDCUCSTART (1 << 8) /* Start (at cbl_offset) */ +#define SCB_CMDCUCRESUME (2 << 8) /* Resume execution */ +#define SCB_CMDCUCSUSPEND (3 << 8) /* Suspend execution */ +#define SCB_CMDCUCABORT (4 << 8) /* Abort execution */ +#define SCB_CMDACKRNR (1 << 12) /* Ack RU not ready */ +#define SCB_CMDACKCNA (1 << 13) /* Ack CU not ready */ +#define SCB_CMDACKFR (1 << 14) /* Ack Frame received */ +#define SCB_CMDACKCX (1 << 15) /* Ack Command complete */ + unsigned short scb_cbl_offset; /* Offset of first command unit */ + unsigned short scb_rfa_offset; /* Offset of first receive frame area */ + unsigned short scb_crc_errors; /* Properly aligned frame with CRC error*/ + unsigned short scb_aln_errors; /* Misaligned frames */ + unsigned short scb_rsc_errors; /* Frames lost due to no space */ + unsigned short scb_ovn_errors; /* Frames lost due to slow bus */ +} scb_t; + +typedef struct { /* iscp */ + unsigned short iscp_busy; /* set by CPU before CA */ + unsigned short iscp_offset; /* offset of SCB */ + unsigned short iscp_basel; /* base of SCB */ + unsigned short iscp_baseh; +} iscp_t; + + /* this address must be 0xfff6 */ +typedef struct { /* scp */ + unsigned short scp_sysbus; /* bus size */ +#define SCP_SY_16BBUS 0x00 +#define SCP_SY_8BBUS 0x01 + unsigned short scp_junk[2]; /* junk */ + unsigned short scp_iscpl; /* lower 16 bits of iscp */ + unsigned short scp_iscph; /* upper 16 bits of iscp */ +} scp_t; + +/* commands */ +#define CMD_NOP 0 +#define CMD_SETADDRESS 1 +#define CMD_CONFIG 2 +#define CMD_SETMULTICAST 3 +#define CMD_TX 4 +#define CMD_TDR 5 +#define CMD_DUMP 6 +#define CMD_DIAGNOSE 7 + +#define CMD_MASK 7 + +#define CMD_INTR (1 << 13) +#define CMD_SUSP (1 << 14) +#define CMD_EOL (1 << 15) + +#define STAT_COLLISIONS (15) +#define STAT_COLLEXCESSIVE (1 << 5) +#define STAT_COLLAFTERTX (1 << 6) +#define STAT_TXDEFERRED (1 << 7) +#define STAT_TXSLOWDMA (1 << 8) +#define STAT_TXLOSTCTS (1 << 9) +#define STAT_NOCARRIER (1 << 10) +#define STAT_FAIL (1 << 11) +#define STAT_ABORTED (1 << 12) +#define STAT_OK (1 << 13) +#define STAT_BUSY (1 << 14) +#define STAT_COMPLETE (1 << 15) +#endif +#endif + +/* + * Ether1 card definitions: + * + * FAST accesses: + * +0 Page register + * 16 pages + * +4 Control + * '1' = reset + * '2' = loopback + * '4' = CA + * '8' = int ack + * + * RAM at address + 0x2000 + * Pod. Prod id = 3 + * Words after ID block [base + 8 words] + * +0 pcb issue (0x0c and 0xf3 invalid) + * +1 - +6 eth hw address + */ diff --git a/drivers/net/arm/ether3.c b/drivers/net/arm/ether3.c new file mode 100644 index 000000000000..1cc53abc3a39 --- /dev/null +++ b/drivers/net/arm/ether3.c @@ -0,0 +1,936 @@ +/* + * linux/drivers/acorn/net/ether3.c + * + * Copyright (C) 1995-2000 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * SEEQ nq8005 ethernet driver for Acorn/ANT Ether3 card + * for Acorn machines + * + * By Russell King, with some suggestions from borris@ant.co.uk + * + * Changelog: + * 1.04 RMK 29/02/1996 Won't pass packets that are from our ethernet + * address up to the higher levels - they're + * silently ignored. I/F can now be put into + * multicast mode. Receiver routine optimised. + * 1.05 RMK 30/02/1996 Now claims interrupt at open when part of + * the kernel rather than when a module. + * 1.06 RMK 02/03/1996 Various code cleanups + * 1.07 RMK 13/10/1996 Optimised interrupt routine and transmit + * routines. + * 1.08 RMK 14/10/1996 Fixed problem with too many packets, + * prevented the kernel message about dropped + * packets appearing too many times a second. + * Now does not disable all IRQs, only the IRQ + * used by this card. + * 1.09 RMK 10/11/1996 Only enables TX irq when buffer space is low, + * but we still service the TX queue if we get a + * RX interrupt. + * 1.10 RMK 15/07/1997 Fixed autoprobing of NQ8004. + * 1.11 RMK 16/11/1997 Fixed autoprobing of NQ8005A. + * 1.12 RMK 31/12/1997 Removed reference to dev_tint for Linux 2.1. + * RMK 27/06/1998 Changed asm/delay.h to linux/delay.h. + * 1.13 RMK 29/06/1998 Fixed problem with transmission of packets. + * Chip seems to have a bug in, whereby if the + * packet starts two bytes from the end of the + * buffer, it corrupts the receiver chain, and + * never updates the transmit status correctly. + * 1.14 RMK 07/01/1998 Added initial code for ETHERB addressing. + * 1.15 RMK 30/04/1999 More fixes to the transmit routine for buggy + * hardware. + * 1.16 RMK 10/02/2000 Updated for 2.3.43 + * 1.17 RMK 13/05/2000 Updated for 2.3.99-pre8 + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ptrace.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/bitops.h> + +#include <asm/system.h> +#include <asm/ecard.h> +#include <asm/io.h> +#include <asm/irq.h> + +static char version[] __initdata = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n"; + +#include "ether3.h" + +static unsigned int net_debug = NET_DEBUG; + +static void ether3_setmulticastlist(struct net_device *dev); +static int ether3_rx(struct net_device *dev, unsigned int maxcnt); +static void ether3_tx(struct net_device *dev); +static int ether3_open (struct net_device *dev); +static int ether3_sendpacket (struct sk_buff *skb, struct net_device *dev); +static irqreturn_t ether3_interrupt (int irq, void *dev_id, struct pt_regs *regs); +static int ether3_close (struct net_device *dev); +static struct net_device_stats *ether3_getstats (struct net_device *dev); +static void ether3_setmulticastlist (struct net_device *dev); +static void ether3_timeout(struct net_device *dev); + +#define BUS_16 2 +#define BUS_8 1 +#define BUS_UNKNOWN 0 + +/* --------------------------------------------------------------------------- */ + +typedef enum { + buffer_write, + buffer_read +} buffer_rw_t; + +/* + * ether3 read/write. Slow things down a bit... + * The SEEQ8005 doesn't like us writing to its registers + * too quickly. + */ +static inline void ether3_outb(int v, const void __iomem *r) +{ + writeb(v, r); + udelay(1); +} + +static inline void ether3_outw(int v, const void __iomem *r) +{ + writew(v, r); + udelay(1); +} +#define ether3_inb(r) ({ unsigned int __v = readb((r)); udelay(1); __v; }) +#define ether3_inw(r) ({ unsigned int __v = readw((r)); udelay(1); __v; }) + +static int +ether3_setbuffer(struct net_device *dev, buffer_rw_t read, int start) +{ + int timeout = 1000; + + ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); + ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND); + + while ((ether3_inw(REG_STATUS) & STAT_FIFOEMPTY) == 0) { + if (!timeout--) { + printk("%s: setbuffer broken\n", dev->name); + priv(dev)->broken = 1; + return 1; + } + udelay(1); + } + + if (read == buffer_read) { + ether3_outw(start, REG_DMAADDR); + ether3_outw(priv(dev)->regs.command | CMD_FIFOREAD, REG_COMMAND); + } else { + ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND); + ether3_outw(start, REG_DMAADDR); + } + return 0; +} + +/* + * write data to the buffer memory + */ +#define ether3_writebuffer(dev,data,length) \ + writesw(REG_BUFWIN, (data), (length) >> 1) + +#define ether3_writeword(dev,data) \ + writew((data), REG_BUFWIN) + +#define ether3_writelong(dev,data) { \ + void __iomem *reg_bufwin = REG_BUFWIN; \ + writew((data), reg_bufwin); \ + writew((data) >> 16, reg_bufwin); \ +} + +/* + * read data from the buffer memory + */ +#define ether3_readbuffer(dev,data,length) \ + readsw(REG_BUFWIN, (data), (length) >> 1) + +#define ether3_readword(dev) \ + readw(REG_BUFWIN) + +#define ether3_readlong(dev) \ + readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16) + +/* + * Switch LED off... + */ +static void ether3_ledoff(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2); +} + +/* + * switch LED on... + */ +static inline void ether3_ledon(struct net_device *dev) +{ + del_timer(&priv(dev)->timer); + priv(dev)->timer.expires = jiffies + HZ / 50; /* leave on for 1/50th second */ + priv(dev)->timer.data = (unsigned long)dev; + priv(dev)->timer.function = ether3_ledoff; + add_timer(&priv(dev)->timer); + if (priv(dev)->regs.config2 & CFG2_CTRLO) + ether3_outw(priv(dev)->regs.config2 &= ~CFG2_CTRLO, REG_CONFIG2); +} + +/* + * Read the ethernet address string from the on board rom. + * This is an ascii string!!! + */ +static int __init +ether3_addr(char *addr, struct expansion_card *ec) +{ + struct in_chunk_dir cd; + char *s; + + if (ecard_readchunk(&cd, ec, 0xf5, 0) && (s = strchr(cd.d.string, '('))) { + int i; + for (i = 0; i<6; i++) { + addr[i] = simple_strtoul(s + 1, &s, 0x10); + if (*s != (i==5?')' : ':' )) + break; + } + if (i == 6) + return 0; + } + /* I wonder if we should even let the user continue in this case + * - no, it would be better to disable the device + */ + printk(KERN_ERR "ether3: Couldn't read a valid MAC address from card.\n"); + return -ENODEV; +} + +/* --------------------------------------------------------------------------- */ + +static int __init +ether3_ramtest(struct net_device *dev, unsigned char byte) +{ + unsigned char *buffer = kmalloc(RX_END, GFP_KERNEL); + int i,ret = 0; + int max_errors = 4; + int bad = -1; + + if (!buffer) + return 1; + + memset(buffer, byte, RX_END); + ether3_setbuffer(dev, buffer_write, 0); + ether3_writebuffer(dev, buffer, TX_END); + ether3_setbuffer(dev, buffer_write, RX_START); + ether3_writebuffer(dev, buffer + RX_START, RX_LEN); + memset(buffer, byte ^ 0xff, RX_END); + ether3_setbuffer(dev, buffer_read, 0); + ether3_readbuffer(dev, buffer, TX_END); + ether3_setbuffer(dev, buffer_read, RX_START); + ether3_readbuffer(dev, buffer + RX_START, RX_LEN); + + for (i = 0; i < RX_END; i++) { + if (buffer[i] != byte) { + if (max_errors > 0 && bad != buffer[i]) { + printk("%s: RAM failed with (%02X instead of %02X) at 0x%04X", + dev->name, buffer[i], byte, i); + ret = 2; + max_errors--; + bad = i; + } + } else { + if (bad != -1) { + if (bad != i - 1) + printk(" - 0x%04X\n", i - 1); + printk("\n"); + bad = -1; + } + } + } + if (bad != -1) + printk(" - 0xffff\n"); + kfree(buffer); + + return ret; +} + +/* ------------------------------------------------------------------------------- */ + +static int __init ether3_init_2(struct net_device *dev) +{ + int i; + + priv(dev)->regs.config1 = CFG1_RECVCOMPSTAT0|CFG1_DMABURST8; + priv(dev)->regs.config2 = CFG2_CTRLO|CFG2_RECVCRC|CFG2_ERRENCRC; + priv(dev)->regs.command = 0; + + /* + * Set up our hardware address + */ + ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1); + for (i = 0; i < 6; i++) + ether3_outb(dev->dev_addr[i], REG_BUFWIN); + + if (dev->flags & IFF_PROMISC) + priv(dev)->regs.config1 |= CFG1_RECVPROMISC; + else if (dev->flags & IFF_MULTICAST) + priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI; + else + priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD; + + /* + * There is a problem with the NQ8005 in that it occasionally loses the + * last two bytes. To get round this problem, we receive the CRC as + * well. That way, if we do lose the last two, then it doesn't matter. + */ + ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1); + ether3_outw((TX_END>>8) - 1, REG_BUFWIN); + ether3_outw(priv(dev)->rx_head, REG_RECVPTR); + ether3_outw(0, REG_TRANSMITPTR); + ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND); + ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); + ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); + ether3_outw(priv(dev)->regs.command, REG_COMMAND); + + i = ether3_ramtest(dev, 0x5A); + if(i) + return i; + i = ether3_ramtest(dev, 0x1E); + if(i) + return i; + + ether3_setbuffer(dev, buffer_write, 0); + ether3_writelong(dev, 0); + return 0; +} + +static void +ether3_init_for_open(struct net_device *dev) +{ + int i; + + memset(&priv(dev)->stats, 0, sizeof(struct net_device_stats)); + + /* Reset the chip */ + ether3_outw(CFG2_RESET, REG_CONFIG2); + udelay(4); + + priv(dev)->regs.command = 0; + ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND); + while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON)) + barrier(); + + ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1); + for (i = 0; i < 6; i++) + ether3_outb(dev->dev_addr[i], REG_BUFWIN); + + priv(dev)->tx_head = 0; + priv(dev)->tx_tail = 0; + priv(dev)->regs.config2 |= CFG2_CTRLO; + priv(dev)->rx_head = RX_START; + + ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1); + ether3_outw((TX_END>>8) - 1, REG_BUFWIN); + ether3_outw(priv(dev)->rx_head, REG_RECVPTR); + ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND); + ether3_outw(0, REG_TRANSMITPTR); + ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); + ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); + + ether3_setbuffer(dev, buffer_write, 0); + ether3_writelong(dev, 0); + + priv(dev)->regs.command = CMD_ENINTRX | CMD_ENINTTX; + ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND); +} + +static inline int +ether3_probe_bus_8(struct net_device *dev, int val) +{ + int write_low, write_high, read_low, read_high; + + write_low = val & 255; + write_high = val >> 8; + + printk(KERN_DEBUG "ether3_probe: write8 [%02X:%02X]", write_high, write_low); + + ether3_outb(write_low, REG_RECVPTR); + ether3_outb(write_high, REG_RECVPTR + 4); + + read_low = ether3_inb(REG_RECVPTR); + read_high = ether3_inb(REG_RECVPTR + 4); + + printk(", read8 [%02X:%02X]\n", read_high, read_low); + + return read_low == write_low && read_high == write_high; +} + +static inline int +ether3_probe_bus_16(struct net_device *dev, int val) +{ + int read_val; + + ether3_outw(val, REG_RECVPTR); + read_val = ether3_inw(REG_RECVPTR); + + printk(KERN_DEBUG "ether3_probe: write16 [%04X], read16 [%04X]\n", val, read_val); + + return read_val == val; +} + +/* + * Open/initialize the board. This is called (in the current kernel) + * sometime after booting when the 'ifconfig' program is run. + * + * This routine should set everything up anew at each open, even + * registers that "should" only need to be set once at boot, so that + * there is non-reboot way to recover if something goes wrong. + */ +static int +ether3_open(struct net_device *dev) +{ + if (!is_valid_ether_addr(dev->dev_addr)) { + printk(KERN_WARNING "%s: invalid ethernet MAC address\n", + dev->name); + return -EINVAL; + } + + if (request_irq(dev->irq, ether3_interrupt, 0, "ether3", dev)) + return -EAGAIN; + + ether3_init_for_open(dev); + + netif_start_queue(dev); + + return 0; +} + +/* + * The inverse routine to ether3_open(). + */ +static int +ether3_close(struct net_device *dev) +{ + netif_stop_queue(dev); + + disable_irq(dev->irq); + + ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND); + priv(dev)->regs.command = 0; + while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON)) + barrier(); + ether3_outb(0x80, REG_CONFIG2 + 4); + ether3_outw(0, REG_COMMAND); + + free_irq(dev->irq, dev); + + return 0; +} + +/* + * Get the current statistics. This may be called with the card open or + * closed. + */ +static struct net_device_stats *ether3_getstats(struct net_device *dev) +{ + return &priv(dev)->stats; +} + +/* + * Set or clear promiscuous/multicast mode filter for this adaptor. + * + * We don't attempt any packet filtering. The card may have a SEEQ 8004 + * in which does not have the other ethernet address registers present... + */ +static void ether3_setmulticastlist(struct net_device *dev) +{ + priv(dev)->regs.config1 &= ~CFG1_RECVPROMISC; + + if (dev->flags & IFF_PROMISC) { + /* promiscuous mode */ + priv(dev)->regs.config1 |= CFG1_RECVPROMISC; + } else if (dev->flags & IFF_ALLMULTI) { + priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI; + } else + priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD; + + ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); +} + +static void ether3_timeout(struct net_device *dev) +{ + unsigned long flags; + + del_timer(&priv(dev)->timer); + + local_irq_save(flags); + printk(KERN_ERR "%s: transmit timed out, network cable problem?\n", dev->name); + printk(KERN_ERR "%s: state: { status=%04X cfg1=%04X cfg2=%04X }\n", dev->name, + ether3_inw(REG_STATUS), ether3_inw(REG_CONFIG1), ether3_inw(REG_CONFIG2)); + printk(KERN_ERR "%s: { rpr=%04X rea=%04X tpr=%04X }\n", dev->name, + ether3_inw(REG_RECVPTR), ether3_inw(REG_RECVEND), ether3_inw(REG_TRANSMITPTR)); + printk(KERN_ERR "%s: tx head=%X tx tail=%X\n", dev->name, + priv(dev)->tx_head, priv(dev)->tx_tail); + ether3_setbuffer(dev, buffer_read, priv(dev)->tx_tail); + printk(KERN_ERR "%s: packet status = %08X\n", dev->name, ether3_readlong(dev)); + local_irq_restore(flags); + + priv(dev)->regs.config2 |= CFG2_CTRLO; + priv(dev)->stats.tx_errors += 1; + ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); + priv(dev)->tx_head = priv(dev)->tx_tail = 0; + + netif_wake_queue(dev); +} + +/* + * Transmit a packet + */ +static int +ether3_sendpacket(struct sk_buff *skb, struct net_device *dev) +{ + unsigned long flags; + unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; + unsigned int ptr, next_ptr; + + if (priv(dev)->broken) { + dev_kfree_skb(skb); + priv(dev)->stats.tx_dropped ++; + netif_start_queue(dev); + return 0; + } + + length = (length + 1) & ~1; + if (length != skb->len) { + skb = skb_padto(skb, length); + if (skb == NULL) + goto out; + } + + next_ptr = (priv(dev)->tx_head + 1) & 15; + + local_irq_save(flags); + + if (priv(dev)->tx_tail == next_ptr) { + local_irq_restore(flags); + return 1; /* unable to queue */ + } + + dev->trans_start = jiffies; + ptr = 0x600 * priv(dev)->tx_head; + priv(dev)->tx_head = next_ptr; + next_ptr *= 0x600; + +#define TXHDR_FLAGS (TXHDR_TRANSMIT|TXHDR_CHAINCONTINUE|TXHDR_DATAFOLLOWS|TXHDR_ENSUCCESS) + + ether3_setbuffer(dev, buffer_write, next_ptr); + ether3_writelong(dev, 0); + ether3_setbuffer(dev, buffer_write, ptr); + ether3_writelong(dev, 0); + ether3_writebuffer(dev, skb->data, length); + ether3_writeword(dev, htons(next_ptr)); + ether3_writeword(dev, TXHDR_CHAINCONTINUE >> 16); + ether3_setbuffer(dev, buffer_write, ptr); + ether3_writeword(dev, htons((ptr + length + 4))); + ether3_writeword(dev, TXHDR_FLAGS >> 16); + ether3_ledon(dev); + + if (!(ether3_inw(REG_STATUS) & STAT_TXON)) { + ether3_outw(ptr, REG_TRANSMITPTR); + ether3_outw(priv(dev)->regs.command | CMD_TXON, REG_COMMAND); + } + + next_ptr = (priv(dev)->tx_head + 1) & 15; + local_irq_restore(flags); + + dev_kfree_skb(skb); + + if (priv(dev)->tx_tail == next_ptr) + netif_stop_queue(dev); + + out: + return 0; +} + +static irqreturn_t +ether3_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct net_device *dev = (struct net_device *)dev_id; + unsigned int status, handled = IRQ_NONE; + +#if NET_DEBUG > 1 + if(net_debug & DEBUG_INT) + printk("eth3irq: %d ", irq); +#endif + + status = ether3_inw(REG_STATUS); + + if (status & STAT_INTRX) { + ether3_outw(CMD_ACKINTRX | priv(dev)->regs.command, REG_COMMAND); + ether3_rx(dev, 12); + handled = IRQ_HANDLED; + } + + if (status & STAT_INTTX) { + ether3_outw(CMD_ACKINTTX | priv(dev)->regs.command, REG_COMMAND); + ether3_tx(dev); + handled = IRQ_HANDLED; + } + +#if NET_DEBUG > 1 + if(net_debug & DEBUG_INT) + printk("done\n"); +#endif + return handled; +} + +/* + * If we have a good packet(s), get it/them out of the buffers. + */ +static int ether3_rx(struct net_device *dev, unsigned int maxcnt) +{ + unsigned int next_ptr = priv(dev)->rx_head, received = 0; + + ether3_ledon(dev); + + do { + unsigned int this_ptr, status; + unsigned char addrs[16]; + + /* + * read the first 16 bytes from the buffer. + * This contains the status bytes etc and ethernet addresses, + * and we also check the source ethernet address to see if + * it originated from us. + */ + { + unsigned int temp_ptr; + ether3_setbuffer(dev, buffer_read, next_ptr); + temp_ptr = ether3_readword(dev); + status = ether3_readword(dev); + if ((status & (RXSTAT_DONE | RXHDR_CHAINCONTINUE | RXHDR_RECEIVE)) != + (RXSTAT_DONE | RXHDR_CHAINCONTINUE) || !temp_ptr) + break; + + this_ptr = next_ptr + 4; + next_ptr = ntohs(temp_ptr); + } + ether3_setbuffer(dev, buffer_read, this_ptr); + ether3_readbuffer(dev, addrs+2, 12); + +if (next_ptr < RX_START || next_ptr >= RX_END) { + int i; + printk("%s: bad next pointer @%04X: ", dev->name, priv(dev)->rx_head); + printk("%02X %02X %02X %02X ", next_ptr >> 8, next_ptr & 255, status & 255, status >> 8); + for (i = 2; i < 14; i++) + printk("%02X ", addrs[i]); + printk("\n"); + next_ptr = priv(dev)->rx_head; + break; +} + /* + * ignore our own packets... + */ + if (!(*(unsigned long *)&dev->dev_addr[0] ^ *(unsigned long *)&addrs[2+6]) && + !(*(unsigned short *)&dev->dev_addr[4] ^ *(unsigned short *)&addrs[2+10])) { + maxcnt ++; /* compensate for loopedback packet */ + ether3_outw(next_ptr >> 8, REG_RECVEND); + } else + if (!(status & (RXSTAT_OVERSIZE|RXSTAT_CRCERROR|RXSTAT_DRIBBLEERROR|RXSTAT_SHORTPACKET))) { + unsigned int length = next_ptr - this_ptr; + struct sk_buff *skb; + + if (next_ptr <= this_ptr) + length += RX_END - RX_START; + + skb = dev_alloc_skb(length + 2); + if (skb) { + unsigned char *buf; + + skb->dev = dev; + skb_reserve(skb, 2); + buf = skb_put(skb, length); + ether3_readbuffer(dev, buf + 12, length - 12); + ether3_outw(next_ptr >> 8, REG_RECVEND); + *(unsigned short *)(buf + 0) = *(unsigned short *)(addrs + 2); + *(unsigned long *)(buf + 2) = *(unsigned long *)(addrs + 4); + *(unsigned long *)(buf + 6) = *(unsigned long *)(addrs + 8); + *(unsigned short *)(buf + 10) = *(unsigned short *)(addrs + 12); + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + received ++; + } else + goto dropping; + } else { + struct net_device_stats *stats = &priv(dev)->stats; + ether3_outw(next_ptr >> 8, REG_RECVEND); + if (status & RXSTAT_OVERSIZE) stats->rx_over_errors ++; + if (status & RXSTAT_CRCERROR) stats->rx_crc_errors ++; + if (status & RXSTAT_DRIBBLEERROR) stats->rx_fifo_errors ++; + if (status & RXSTAT_SHORTPACKET) stats->rx_length_errors ++; + stats->rx_errors++; + } + } + while (-- maxcnt); + +done: + priv(dev)->stats.rx_packets += received; + priv(dev)->rx_head = next_ptr; + /* + * If rx went off line, then that means that the buffer may be full. We + * have dropped at least one packet. + */ + if (!(ether3_inw(REG_STATUS) & STAT_RXON)) { + priv(dev)->stats.rx_dropped ++; + ether3_outw(next_ptr, REG_RECVPTR); + ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND); + } + + return maxcnt; + +dropping:{ + static unsigned long last_warned; + + ether3_outw(next_ptr >> 8, REG_RECVEND); + /* + * Don't print this message too many times... + */ + if (time_after(jiffies, last_warned + 10 * HZ)) { + last_warned = jiffies; + printk("%s: memory squeeze, dropping packet.\n", dev->name); + } + priv(dev)->stats.rx_dropped ++; + goto done; + } +} + +/* + * Update stats for the transmitted packet(s) + */ +static void ether3_tx(struct net_device *dev) +{ + unsigned int tx_tail = priv(dev)->tx_tail; + int max_work = 14; + + do { + unsigned long status; + + /* + * Read the packet header + */ + ether3_setbuffer(dev, buffer_read, tx_tail * 0x600); + status = ether3_readlong(dev); + + /* + * Check to see if this packet has been transmitted + */ + if ((status & (TXSTAT_DONE | TXHDR_TRANSMIT)) != + (TXSTAT_DONE | TXHDR_TRANSMIT)) + break; + + /* + * Update errors + */ + if (!(status & (TXSTAT_BABBLED | TXSTAT_16COLLISIONS))) + priv(dev)->stats.tx_packets++; + else { + priv(dev)->stats.tx_errors ++; + if (status & TXSTAT_16COLLISIONS) + priv(dev)->stats.collisions += 16; + if (status & TXSTAT_BABBLED) + priv(dev)->stats.tx_fifo_errors ++; + } + + tx_tail = (tx_tail + 1) & 15; + } while (--max_work); + + if (priv(dev)->tx_tail != tx_tail) { + priv(dev)->tx_tail = tx_tail; + netif_wake_queue(dev); + } +} + +static void __init ether3_banner(void) +{ + static unsigned version_printed = 0; + + if (net_debug && version_printed++ == 0) + printk(KERN_INFO "%s", version); +} + +static int __devinit +ether3_probe(struct expansion_card *ec, const struct ecard_id *id) +{ + const struct ether3_data *data = id->data; + struct net_device *dev; + int i, bus_type, ret; + + ether3_banner(); + + ret = ecard_request_resources(ec); + if (ret) + goto out; + + dev = alloc_etherdev(sizeof(struct dev_priv)); + if (!dev) { + ret = -ENOMEM; + goto release; + } + + SET_MODULE_OWNER(dev); + SET_NETDEV_DEV(dev, &ec->dev); + + priv(dev)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), + ecard_resource_len(ec, ECARD_RES_MEMC)); + if (!priv(dev)->base) { + ret = -ENOMEM; + goto free; + } + + ec->irqaddr = priv(dev)->base + data->base_offset; + ec->irqmask = 0xf0; + + priv(dev)->seeq = priv(dev)->base + data->base_offset; + dev->irq = ec->irq; + + ether3_addr(dev->dev_addr, ec); + + init_timer(&priv(dev)->timer); + + /* Reset card... + */ + ether3_outb(0x80, REG_CONFIG2 + 4); + bus_type = BUS_UNKNOWN; + udelay(4); + + /* Test using Receive Pointer (16-bit register) to find out + * how the ether3 is connected to the bus... + */ + if (ether3_probe_bus_8(dev, 0x100) && + ether3_probe_bus_8(dev, 0x201)) + bus_type = BUS_8; + + if (bus_type == BUS_UNKNOWN && + ether3_probe_bus_16(dev, 0x101) && + ether3_probe_bus_16(dev, 0x201)) + bus_type = BUS_16; + + switch (bus_type) { + case BUS_UNKNOWN: + printk(KERN_ERR "%s: unable to identify bus width\n", dev->name); + ret = -ENODEV; + goto free; + + case BUS_8: + printk(KERN_ERR "%s: %s found, but is an unsupported " + "8-bit card\n", dev->name, data->name); + ret = -ENODEV; + goto free; + + default: + break; + } + + if (ether3_init_2(dev)) { + ret = -ENODEV; + goto free; + } + + dev->open = ether3_open; + dev->stop = ether3_close; + dev->hard_start_xmit = ether3_sendpacket; + dev->get_stats = ether3_getstats; + dev->set_multicast_list = ether3_setmulticastlist; + dev->tx_timeout = ether3_timeout; + dev->watchdog_timeo = 5 * HZ / 100; + + ret = register_netdev(dev); + if (ret) + goto free; + + printk("%s: %s in slot %d, ", dev->name, data->name, ec->slot_no); + for (i = 0; i < 6; i++) + printk("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':'); + + ecard_set_drvdata(ec, dev); + return 0; + + free: + if (priv(dev)->base) + iounmap(priv(dev)->base); + free_netdev(dev); + release: + ecard_release_resources(ec); + out: + return ret; +} + +static void __devexit ether3_remove(struct expansion_card *ec) +{ + struct net_device *dev = ecard_get_drvdata(ec); + + ecard_set_drvdata(ec, NULL); + + unregister_netdev(dev); + iounmap(priv(dev)->base); + free_netdev(dev); + ecard_release_resources(ec); +} + +static struct ether3_data ether3 = { + .name = "ether3", + .base_offset = 0, +}; + +static struct ether3_data etherb = { + .name = "etherb", + .base_offset = 0x800, +}; + +static const struct ecard_id ether3_ids[] = { + { MANU_ANT2, PROD_ANT_ETHER3, ðer3 }, + { MANU_ANT, PROD_ANT_ETHER3, ðer3 }, + { MANU_ANT, PROD_ANT_ETHERB, ðerb }, + { 0xffff, 0xffff } +}; + +static struct ecard_driver ether3_driver = { + .probe = ether3_probe, + .remove = __devexit_p(ether3_remove), + .id_table = ether3_ids, + .drv = { + .name = "ether3", + }, +}; + +static int __init ether3_init(void) +{ + return ecard_register_driver(ðer3_driver); +} + +static void __exit ether3_exit(void) +{ + ecard_remove_driver(ðer3_driver); +} + +module_init(ether3_init); +module_exit(ether3_exit); + +MODULE_LICENSE("GPL"); diff --git a/drivers/net/arm/ether3.h b/drivers/net/arm/ether3.h new file mode 100644 index 000000000000..1921a3a07da7 --- /dev/null +++ b/drivers/net/arm/ether3.h @@ -0,0 +1,177 @@ +/* + * linux/drivers/acorn/net/ether3.h + * + * Copyright (C) 1995-2000 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * network driver for Acorn/ANT Ether3 cards + */ + +#ifndef _LINUX_ether3_H +#define _LINUX_ether3_H + +/* use 0 for production, 1 for verification, >2 for debug. debug flags: */ +#define DEBUG_TX 2 +#define DEBUG_RX 4 +#define DEBUG_INT 8 +#define DEBUG_IC 16 +#ifndef NET_DEBUG +#define NET_DEBUG 0 +#endif + +#define priv(dev) ((struct dev_priv *)netdev_priv(dev)) + +/* Command register definitions & bits */ +#define REG_COMMAND (priv(dev)->seeq + 0x0000) +#define CMD_ENINTDMA 0x0001 +#define CMD_ENINTRX 0x0002 +#define CMD_ENINTTX 0x0004 +#define CMD_ENINTBUFWIN 0x0008 +#define CMD_ACKINTDMA 0x0010 +#define CMD_ACKINTRX 0x0020 +#define CMD_ACKINTTX 0x0040 +#define CMD_ACKINTBUFWIN 0x0080 +#define CMD_DMAON 0x0100 +#define CMD_RXON 0x0200 +#define CMD_TXON 0x0400 +#define CMD_DMAOFF 0x0800 +#define CMD_RXOFF 0x1000 +#define CMD_TXOFF 0x2000 +#define CMD_FIFOREAD 0x4000 +#define CMD_FIFOWRITE 0x8000 + +/* status register */ +#define REG_STATUS (priv(dev)->seeq + 0x0000) +#define STAT_ENINTSTAT 0x0001 +#define STAT_ENINTRX 0x0002 +#define STAT_ENINTTX 0x0004 +#define STAT_ENINTBUFWIN 0x0008 +#define STAT_INTDMA 0x0010 +#define STAT_INTRX 0x0020 +#define STAT_INTTX 0x0040 +#define STAT_INTBUFWIN 0x0080 +#define STAT_DMAON 0x0100 +#define STAT_RXON 0x0200 +#define STAT_TXON 0x0400 +#define STAT_FIFOFULL 0x2000 +#define STAT_FIFOEMPTY 0x4000 +#define STAT_FIFODIR 0x8000 + +/* configuration register 1 */ +#define REG_CONFIG1 (priv(dev)->seeq + 0x0040) +#define CFG1_BUFSELSTAT0 0x0000 +#define CFG1_BUFSELSTAT1 0x0001 +#define CFG1_BUFSELSTAT2 0x0002 +#define CFG1_BUFSELSTAT3 0x0003 +#define CFG1_BUFSELSTAT4 0x0004 +#define CFG1_BUFSELSTAT5 0x0005 +#define CFG1_ADDRPROM 0x0006 +#define CFG1_TRANSEND 0x0007 +#define CFG1_LOCBUFMEM 0x0008 +#define CFG1_INTVECTOR 0x0009 +#define CFG1_RECVSPECONLY 0x0000 +#define CFG1_RECVSPECBROAD 0x4000 +#define CFG1_RECVSPECBRMULTI 0x8000 +#define CFG1_RECVPROMISC 0xC000 + +/* The following aren't in 8004 */ +#define CFG1_DMABURSTCONT 0x0000 +#define CFG1_DMABURST800NS 0x0010 +#define CFG1_DMABURST1600NS 0x0020 +#define CFG1_DMABURST3200NS 0x0030 +#define CFG1_DMABURST1 0x0000 +#define CFG1_DMABURST4 0x0040 +#define CFG1_DMABURST8 0x0080 +#define CFG1_DMABURST16 0x00C0 +#define CFG1_RECVCOMPSTAT0 0x0100 +#define CFG1_RECVCOMPSTAT1 0x0200 +#define CFG1_RECVCOMPSTAT2 0x0400 +#define CFG1_RECVCOMPSTAT3 0x0800 +#define CFG1_RECVCOMPSTAT4 0x1000 +#define CFG1_RECVCOMPSTAT5 0x2000 + +/* configuration register 2 */ +#define REG_CONFIG2 (priv(dev)->seeq + 0x0080) +#define CFG2_BYTESWAP 0x0001 +#define CFG2_ERRENCRC 0x0008 +#define CFG2_ERRENDRIBBLE 0x0010 +#define CFG2_ERRSHORTFRAME 0x0020 +#define CFG2_SLOTSELECT 0x0040 +#define CFG2_PREAMSELECT 0x0080 +#define CFG2_ADDRLENGTH 0x0100 +#define CFG2_RECVCRC 0x0200 +#define CFG2_XMITNOCRC 0x0400 +#define CFG2_LOOPBACK 0x0800 +#define CFG2_CTRLO 0x1000 +#define CFG2_RESET 0x8000 + +#define REG_RECVEND (priv(dev)->seeq + 0x00c0) + +#define REG_BUFWIN (priv(dev)->seeq + 0x0100) + +#define REG_RECVPTR (priv(dev)->seeq + 0x0140) + +#define REG_TRANSMITPTR (priv(dev)->seeq + 0x0180) + +#define REG_DMAADDR (priv(dev)->seeq + 0x01c0) + +/* + * Cards transmit/receive headers + */ +#define TX_NEXT (0xffff) +#define TXHDR_ENBABBLEINT (1 << 16) +#define TXHDR_ENCOLLISIONINT (1 << 17) +#define TXHDR_EN16COLLISION (1 << 18) +#define TXHDR_ENSUCCESS (1 << 19) +#define TXHDR_DATAFOLLOWS (1 << 21) +#define TXHDR_CHAINCONTINUE (1 << 22) +#define TXHDR_TRANSMIT (1 << 23) +#define TXSTAT_BABBLED (1 << 24) +#define TXSTAT_COLLISION (1 << 25) +#define TXSTAT_16COLLISIONS (1 << 26) +#define TXSTAT_DONE (1 << 31) + +#define RX_NEXT (0xffff) +#define RXHDR_CHAINCONTINUE (1 << 6) +#define RXHDR_RECEIVE (1 << 7) +#define RXSTAT_OVERSIZE (1 << 8) +#define RXSTAT_CRCERROR (1 << 9) +#define RXSTAT_DRIBBLEERROR (1 << 10) +#define RXSTAT_SHORTPACKET (1 << 11) +#define RXSTAT_DONE (1 << 15) + + +#define TX_START 0x0000 +#define TX_END 0x6000 +#define RX_START 0x6000 +#define RX_LEN 0xA000 +#define RX_END 0x10000 +/* must be a power of 2 and greater than MAX_TX_BUFFERED */ +#define MAX_TXED 16 +#define MAX_TX_BUFFERED 10 + +struct dev_priv { + void __iomem *base; + void __iomem *seeq; + struct { + unsigned int command; + unsigned int config1; + unsigned int config2; + } regs; + unsigned char tx_head; /* buffer nr to insert next packet */ + unsigned char tx_tail; /* buffer nr of transmitting packet */ + unsigned int rx_head; /* address to fetch next packet from */ + struct net_device_stats stats; + struct timer_list timer; + int broken; /* 0 = ok, 1 = something went wrong */ +}; + +struct ether3_data { + const char name[8]; + unsigned long base_offset; +}; + +#endif diff --git a/drivers/net/arm/etherh.c b/drivers/net/arm/etherh.c new file mode 100644 index 000000000000..942a2819576c --- /dev/null +++ b/drivers/net/arm/etherh.c @@ -0,0 +1,862 @@ +/* + * linux/drivers/acorn/net/etherh.c + * + * Copyright (C) 2000-2002 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * NS8390 I-cubed EtherH and ANT EtherM specific driver + * Thanks to I-Cubed for information on their cards. + * EtherM conversion (C) 1999 Chris Kemp and Tim Watterton + * EtherM integration (C) 2000 Aleph One Ltd (Tak-Shing Chan) + * EtherM integration re-engineered by Russell King. + * + * Changelog: + * 08-12-1996 RMK 1.00 Created + * RMK 1.03 Added support for EtherLan500 cards + * 23-11-1997 RMK 1.04 Added media autodetection + * 16-04-1998 RMK 1.05 Improved media autodetection + * 10-02-2000 RMK 1.06 Updated for 2.3.43 + * 13-05-2000 RMK 1.07 Updated for 2.3.99-pre8 + * 12-10-1999 CK/TEW EtherM driver first release + * 21-12-2000 TTC EtherH/EtherM integration + * 25-12-2000 RMK 1.08 Clean integration of EtherM into this driver. + * 03-01-2002 RMK 1.09 Always enable IRQs if we're in the nic slot. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ptrace.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/ethtool.h> +#include <linux/skbuff.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/bitops.h> + +#include <asm/system.h> +#include <asm/ecard.h> +#include <asm/io.h> +#include <asm/irq.h> + +#include "../8390.h" + +#define NET_DEBUG 0 +#define DEBUG_INIT 2 + +#define DRV_NAME "etherh" +#define DRV_VERSION "1.11" + +static unsigned int net_debug = NET_DEBUG; + +struct etherh_priv { + void __iomem *ioc_fast; + void __iomem *memc; + void __iomem *dma_base; + unsigned int id; + void __iomem *ctrl_port; + unsigned char ctrl; + u32 supported; +}; + +struct etherh_data { + unsigned long ns8390_offset; + unsigned long dataport_offset; + unsigned long ctrlport_offset; + int ctrl_ioc; + const char name[16]; + u32 supported; + unsigned char tx_start_page; + unsigned char stop_page; +}; + +MODULE_AUTHOR("Russell King"); +MODULE_DESCRIPTION("EtherH/EtherM driver"); +MODULE_LICENSE("GPL"); + +static char version[] __initdata = + "EtherH/EtherM Driver (c) 2002-2004 Russell King " DRV_VERSION "\n"; + +#define ETHERH500_DATAPORT 0x800 /* MEMC */ +#define ETHERH500_NS8390 0x000 /* MEMC */ +#define ETHERH500_CTRLPORT 0x800 /* IOC */ + +#define ETHERH600_DATAPORT 0x040 /* MEMC */ +#define ETHERH600_NS8390 0x800 /* MEMC */ +#define ETHERH600_CTRLPORT 0x200 /* MEMC */ + +#define ETHERH_CP_IE 1 +#define ETHERH_CP_IF 2 +#define ETHERH_CP_HEARTBEAT 2 + +#define ETHERH_TX_START_PAGE 1 +#define ETHERH_STOP_PAGE 127 + +/* + * These came from CK/TEW + */ +#define ETHERM_DATAPORT 0x200 /* MEMC */ +#define ETHERM_NS8390 0x800 /* MEMC */ +#define ETHERM_CTRLPORT 0x23c /* MEMC */ + +#define ETHERM_TX_START_PAGE 64 +#define ETHERM_STOP_PAGE 127 + +/* ------------------------------------------------------------------------ */ + +#define etherh_priv(dev) \ + ((struct etherh_priv *)(((char *)netdev_priv(dev)) + sizeof(struct ei_device))) + +static inline void etherh_set_ctrl(struct etherh_priv *eh, unsigned char mask) +{ + unsigned char ctrl = eh->ctrl | mask; + eh->ctrl = ctrl; + writeb(ctrl, eh->ctrl_port); +} + +static inline void etherh_clr_ctrl(struct etherh_priv *eh, unsigned char mask) +{ + unsigned char ctrl = eh->ctrl & ~mask; + eh->ctrl = ctrl; + writeb(ctrl, eh->ctrl_port); +} + +static inline unsigned int etherh_get_stat(struct etherh_priv *eh) +{ + return readb(eh->ctrl_port); +} + + + + +static void etherh_irq_enable(ecard_t *ec, int irqnr) +{ + struct etherh_priv *eh = ec->irq_data; + + etherh_set_ctrl(eh, ETHERH_CP_IE); +} + +static void etherh_irq_disable(ecard_t *ec, int irqnr) +{ + struct etherh_priv *eh = ec->irq_data; + + etherh_clr_ctrl(eh, ETHERH_CP_IE); +} + +static expansioncard_ops_t etherh_ops = { + .irqenable = etherh_irq_enable, + .irqdisable = etherh_irq_disable, +}; + + + + +static void +etherh_setif(struct net_device *dev) +{ + struct ei_device *ei_local = netdev_priv(dev); + unsigned long flags; + void __iomem *addr; + + local_irq_save(flags); + + /* set the interface type */ + switch (etherh_priv(dev)->id) { + case PROD_I3_ETHERLAN600: + case PROD_I3_ETHERLAN600A: + addr = (void *)dev->base_addr + EN0_RCNTHI; + + switch (dev->if_port) { + case IF_PORT_10BASE2: + writeb((readb(addr) & 0xf8) | 1, addr); + break; + case IF_PORT_10BASET: + writeb((readb(addr) & 0xf8), addr); + break; + } + break; + + case PROD_I3_ETHERLAN500: + switch (dev->if_port) { + case IF_PORT_10BASE2: + etherh_clr_ctrl(etherh_priv(dev), ETHERH_CP_IF); + break; + + case IF_PORT_10BASET: + etherh_set_ctrl(etherh_priv(dev), ETHERH_CP_IF); + break; + } + break; + + default: + break; + } + + local_irq_restore(flags); +} + +static int +etherh_getifstat(struct net_device *dev) +{ + struct ei_device *ei_local = netdev_priv(dev); + void __iomem *addr; + int stat = 0; + + switch (etherh_priv(dev)->id) { + case PROD_I3_ETHERLAN600: + case PROD_I3_ETHERLAN600A: + addr = (void *)dev->base_addr + EN0_RCNTHI; + switch (dev->if_port) { + case IF_PORT_10BASE2: + stat = 1; + break; + case IF_PORT_10BASET: + stat = readb(addr) & 4; + break; + } + break; + + case PROD_I3_ETHERLAN500: + switch (dev->if_port) { + case IF_PORT_10BASE2: + stat = 1; + break; + case IF_PORT_10BASET: + stat = etherh_get_stat(etherh_priv(dev)) & ETHERH_CP_HEARTBEAT; + break; + } + break; + + default: + stat = 0; + break; + } + + return stat != 0; +} + +/* + * Configure the interface. Note that we ignore the other + * parts of ifmap, since its mostly meaningless for this driver. + */ +static int etherh_set_config(struct net_device *dev, struct ifmap *map) +{ + switch (map->port) { + case IF_PORT_10BASE2: + case IF_PORT_10BASET: + /* + * If the user explicitly sets the interface + * media type, turn off automedia detection. + */ + dev->flags &= ~IFF_AUTOMEDIA; + dev->if_port = map->port; + break; + + default: + return -EINVAL; + } + + etherh_setif(dev); + + return 0; +} + +/* + * Reset the 8390 (hard reset). Note that we can't actually do this. + */ +static void +etherh_reset(struct net_device *dev) +{ + struct ei_device *ei_local = netdev_priv(dev); + void __iomem *addr = (void *)dev->base_addr; + + writeb(E8390_NODMA+E8390_PAGE0+E8390_STOP, addr); + + /* + * See if we need to change the interface type. + * Note that we use 'interface_num' as a flag + * to indicate that we need to change the media. + */ + if (dev->flags & IFF_AUTOMEDIA && ei_local->interface_num) { + ei_local->interface_num = 0; + + if (dev->if_port == IF_PORT_10BASET) + dev->if_port = IF_PORT_10BASE2; + else + dev->if_port = IF_PORT_10BASET; + + etherh_setif(dev); + } +} + +/* + * Write a block of data out to the 8390 + */ +static void +etherh_block_output (struct net_device *dev, int count, const unsigned char *buf, int start_page) +{ + struct ei_device *ei_local = netdev_priv(dev); + unsigned long dma_start; + void __iomem *dma_base, *addr; + + if (ei_local->dmaing) { + printk(KERN_ERR "%s: DMAing conflict in etherh_block_input: " + " DMAstat %d irqlock %d\n", dev->name, + ei_local->dmaing, ei_local->irqlock); + return; + } + + /* + * Make sure we have a round number of bytes if we're in word mode. + */ + if (count & 1 && ei_local->word16) + count++; + + ei_local->dmaing = 1; + + addr = (void *)dev->base_addr; + dma_base = etherh_priv(dev)->dma_base; + + count = (count + 1) & ~1; + writeb (E8390_NODMA | E8390_PAGE0 | E8390_START, addr + E8390_CMD); + + writeb (0x42, addr + EN0_RCNTLO); + writeb (0x00, addr + EN0_RCNTHI); + writeb (0x42, addr + EN0_RSARLO); + writeb (0x00, addr + EN0_RSARHI); + writeb (E8390_RREAD | E8390_START, addr + E8390_CMD); + + udelay (1); + + writeb (ENISR_RDC, addr + EN0_ISR); + writeb (count, addr + EN0_RCNTLO); + writeb (count >> 8, addr + EN0_RCNTHI); + writeb (0, addr + EN0_RSARLO); + writeb (start_page, addr + EN0_RSARHI); + writeb (E8390_RWRITE | E8390_START, addr + E8390_CMD); + + if (ei_local->word16) + writesw (dma_base, buf, count >> 1); + else + writesb (dma_base, buf, count); + + dma_start = jiffies; + + while ((readb (addr + EN0_ISR) & ENISR_RDC) == 0) + if (jiffies - dma_start > 2*HZ/100) { /* 20ms */ + printk(KERN_ERR "%s: timeout waiting for TX RDC\n", + dev->name); + etherh_reset (dev); + NS8390_init (dev, 1); + break; + } + + writeb (ENISR_RDC, addr + EN0_ISR); + ei_local->dmaing = 0; +} + +/* + * Read a block of data from the 8390 + */ +static void +etherh_block_input (struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) +{ + struct ei_device *ei_local = netdev_priv(dev); + unsigned char *buf; + void __iomem *dma_base, *addr; + + if (ei_local->dmaing) { + printk(KERN_ERR "%s: DMAing conflict in etherh_block_input: " + " DMAstat %d irqlock %d\n", dev->name, + ei_local->dmaing, ei_local->irqlock); + return; + } + + ei_local->dmaing = 1; + + addr = (void *)dev->base_addr; + dma_base = etherh_priv(dev)->dma_base; + + buf = skb->data; + writeb (E8390_NODMA | E8390_PAGE0 | E8390_START, addr + E8390_CMD); + writeb (count, addr + EN0_RCNTLO); + writeb (count >> 8, addr + EN0_RCNTHI); + writeb (ring_offset, addr + EN0_RSARLO); + writeb (ring_offset >> 8, addr + EN0_RSARHI); + writeb (E8390_RREAD | E8390_START, addr + E8390_CMD); + + if (ei_local->word16) { + readsw (dma_base, buf, count >> 1); + if (count & 1) + buf[count - 1] = readb (dma_base); + } else + readsb (dma_base, buf, count); + + writeb (ENISR_RDC, addr + EN0_ISR); + ei_local->dmaing = 0; +} + +/* + * Read a header from the 8390 + */ +static void +etherh_get_header (struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) +{ + struct ei_device *ei_local = netdev_priv(dev); + void __iomem *dma_base, *addr; + + if (ei_local->dmaing) { + printk(KERN_ERR "%s: DMAing conflict in etherh_get_header: " + " DMAstat %d irqlock %d\n", dev->name, + ei_local->dmaing, ei_local->irqlock); + return; + } + + ei_local->dmaing = 1; + + addr = (void *)dev->base_addr; + dma_base = etherh_priv(dev)->dma_base; + + writeb (E8390_NODMA | E8390_PAGE0 | E8390_START, addr + E8390_CMD); + writeb (sizeof (*hdr), addr + EN0_RCNTLO); + writeb (0, addr + EN0_RCNTHI); + writeb (0, addr + EN0_RSARLO); + writeb (ring_page, addr + EN0_RSARHI); + writeb (E8390_RREAD | E8390_START, addr + E8390_CMD); + + if (ei_local->word16) + readsw (dma_base, hdr, sizeof (*hdr) >> 1); + else + readsb (dma_base, hdr, sizeof (*hdr)); + + writeb (ENISR_RDC, addr + EN0_ISR); + ei_local->dmaing = 0; +} + +/* + * Open/initialize the board. This is called (in the current kernel) + * sometime after booting when the 'ifconfig' program is run. + * + * This routine should set everything up anew at each open, even + * registers that "should" only need to be set once at boot, so that + * there is non-reboot way to recover if something goes wrong. + */ +static int +etherh_open(struct net_device *dev) +{ + struct ei_device *ei_local = netdev_priv(dev); + + if (!is_valid_ether_addr(dev->dev_addr)) { + printk(KERN_WARNING "%s: invalid ethernet MAC address\n", + dev->name); + return -EINVAL; + } + + if (request_irq(dev->irq, ei_interrupt, 0, dev->name, dev)) + return -EAGAIN; + + /* + * Make sure that we aren't going to change the + * media type on the next reset - we are about to + * do automedia manually now. + */ + ei_local->interface_num = 0; + + /* + * If we are doing automedia detection, do it now. + * This is more reliable than the 8390's detection. + */ + if (dev->flags & IFF_AUTOMEDIA) { + dev->if_port = IF_PORT_10BASET; + etherh_setif(dev); + mdelay(1); + if (!etherh_getifstat(dev)) { + dev->if_port = IF_PORT_10BASE2; + etherh_setif(dev); + } + } else + etherh_setif(dev); + + etherh_reset(dev); + ei_open(dev); + + return 0; +} + +/* + * The inverse routine to etherh_open(). + */ +static int +etherh_close(struct net_device *dev) +{ + ei_close (dev); + free_irq (dev->irq, dev); + return 0; +} + +/* + * Initialisation + */ + +static void __init etherh_banner(void) +{ + static int version_printed; + + if (net_debug && version_printed++ == 0) + printk(KERN_INFO "%s", version); +} + +/* + * Read the ethernet address string from the on board rom. + * This is an ascii string... + */ +static int __init etherh_addr(char *addr, struct expansion_card *ec) +{ + struct in_chunk_dir cd; + char *s; + + if (!ecard_readchunk(&cd, ec, 0xf5, 0)) { + printk(KERN_ERR "%s: unable to read podule description string\n", + ec->dev.bus_id); + goto no_addr; + } + + s = strchr(cd.d.string, '('); + if (s) { + int i; + + for (i = 0; i < 6; i++) { + addr[i] = simple_strtoul(s + 1, &s, 0x10); + if (*s != (i == 5? ')' : ':')) + break; + } + + if (i == 6) + return 0; + } + + printk(KERN_ERR "%s: unable to parse MAC address: %s\n", + ec->dev.bus_id, cd.d.string); + + no_addr: + return -ENODEV; +} + +/* + * Create an ethernet address from the system serial number. + */ +static int __init etherm_addr(char *addr) +{ + unsigned int serial; + + if (system_serial_low == 0 && system_serial_high == 0) + return -ENODEV; + + serial = system_serial_low | system_serial_high; + + addr[0] = 0; + addr[1] = 0; + addr[2] = 0xa4; + addr[3] = 0x10 + (serial >> 24); + addr[4] = serial >> 16; + addr[5] = serial >> 8; + return 0; +} + +static void etherh_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) +{ + strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); + strlcpy(info->version, DRV_VERSION, sizeof(info->version)); + strlcpy(info->bus_info, dev->class_dev.dev->bus_id, + sizeof(info->bus_info)); +} + +static int etherh_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + cmd->supported = etherh_priv(dev)->supported; + cmd->speed = SPEED_10; + cmd->duplex = DUPLEX_HALF; + cmd->port = dev->if_port == IF_PORT_10BASET ? PORT_TP : PORT_BNC; + cmd->autoneg = dev->flags & IFF_AUTOMEDIA ? AUTONEG_ENABLE : AUTONEG_DISABLE; + return 0; +} + +static int etherh_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + switch (cmd->autoneg) { + case AUTONEG_ENABLE: + dev->flags |= IFF_AUTOMEDIA; + break; + + case AUTONEG_DISABLE: + switch (cmd->port) { + case PORT_TP: + dev->if_port = IF_PORT_10BASET; + break; + + case PORT_BNC: + dev->if_port = IF_PORT_10BASE2; + break; + + default: + return -EINVAL; + } + dev->flags &= ~IFF_AUTOMEDIA; + break; + + default: + return -EINVAL; + } + + etherh_setif(dev); + + return 0; +} + +static struct ethtool_ops etherh_ethtool_ops = { + .get_settings = etherh_get_settings, + .set_settings = etherh_set_settings, + .get_drvinfo = etherh_get_drvinfo, +}; + +static u32 etherh_regoffsets[16]; +static u32 etherm_regoffsets[16]; + +static int __init +etherh_probe(struct expansion_card *ec, const struct ecard_id *id) +{ + const struct etherh_data *data = id->data; + struct ei_device *ei_local; + struct net_device *dev; + struct etherh_priv *eh; + int i, ret; + + etherh_banner(); + + ret = ecard_request_resources(ec); + if (ret) + goto out; + + dev = __alloc_ei_netdev(sizeof(struct etherh_priv)); + if (!dev) { + ret = -ENOMEM; + goto release; + } + + SET_MODULE_OWNER(dev); + SET_NETDEV_DEV(dev, &ec->dev); + + dev->open = etherh_open; + dev->stop = etherh_close; + dev->set_config = etherh_set_config; + dev->irq = ec->irq; + dev->ethtool_ops = ðerh_ethtool_ops; + + if (data->supported & SUPPORTED_Autoneg) + dev->flags |= IFF_AUTOMEDIA; + if (data->supported & SUPPORTED_TP) { + dev->flags |= IFF_PORTSEL; + dev->if_port = IF_PORT_10BASET; + } else if (data->supported & SUPPORTED_BNC) { + dev->flags |= IFF_PORTSEL; + dev->if_port = IF_PORT_10BASE2; + } else + dev->if_port = IF_PORT_UNKNOWN; + + eh = etherh_priv(dev); + eh->supported = data->supported; + eh->ctrl = 0; + eh->id = ec->cid.product; + eh->memc = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), PAGE_SIZE); + if (!eh->memc) { + ret = -ENOMEM; + goto free; + } + + eh->ctrl_port = eh->memc; + if (data->ctrl_ioc) { + eh->ioc_fast = ioremap(ecard_resource_start(ec, ECARD_RES_IOCFAST), PAGE_SIZE); + if (!eh->ioc_fast) { + ret = -ENOMEM; + goto free; + } + eh->ctrl_port = eh->ioc_fast; + } + + dev->base_addr = (unsigned long)eh->memc + data->ns8390_offset; + eh->dma_base = eh->memc + data->dataport_offset; + eh->ctrl_port += data->ctrlport_offset; + + /* + * IRQ and control port handling - only for non-NIC slot cards. + */ + if (ec->slot_no != 8) { + ec->ops = ðerh_ops; + ec->irq_data = eh; + } else { + /* + * If we're in the NIC slot, make sure the IRQ is enabled + */ + etherh_set_ctrl(eh, ETHERH_CP_IE); + } + + ei_local = netdev_priv(dev); + spin_lock_init(&ei_local->page_lock); + + if (ec->cid.product == PROD_ANT_ETHERM) { + etherm_addr(dev->dev_addr); + ei_local->reg_offset = etherm_regoffsets; + } else { + etherh_addr(dev->dev_addr, ec); + ei_local->reg_offset = etherh_regoffsets; + } + + ei_local->name = dev->name; + ei_local->word16 = 1; + ei_local->tx_start_page = data->tx_start_page; + ei_local->rx_start_page = ei_local->tx_start_page + TX_PAGES; + ei_local->stop_page = data->stop_page; + ei_local->reset_8390 = etherh_reset; + ei_local->block_input = etherh_block_input; + ei_local->block_output = etherh_block_output; + ei_local->get_8390_hdr = etherh_get_header; + ei_local->interface_num = 0; + + etherh_reset(dev); + NS8390_init(dev, 0); + + ret = register_netdev(dev); + if (ret) + goto free; + + printk(KERN_INFO "%s: %s in slot %d, ", + dev->name, data->name, ec->slot_no); + + for (i = 0; i < 6; i++) + printk("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':'); + + ecard_set_drvdata(ec, dev); + + return 0; + + free: + if (eh->ioc_fast) + iounmap(eh->ioc_fast); + if (eh->memc) + iounmap(eh->memc); + free_netdev(dev); + release: + ecard_release_resources(ec); + out: + return ret; +} + +static void __devexit etherh_remove(struct expansion_card *ec) +{ + struct net_device *dev = ecard_get_drvdata(ec); + struct etherh_priv *eh = etherh_priv(dev); + + ecard_set_drvdata(ec, NULL); + + unregister_netdev(dev); + ec->ops = NULL; + + if (eh->ioc_fast) + iounmap(eh->ioc_fast); + iounmap(eh->memc); + + free_netdev(dev); + + ecard_release_resources(ec); +} + +static struct etherh_data etherm_data = { + .ns8390_offset = ETHERM_NS8390, + .dataport_offset = ETHERM_NS8390 + ETHERM_DATAPORT, + .ctrlport_offset = ETHERM_NS8390 + ETHERM_CTRLPORT, + .name = "ANT EtherM", + .supported = SUPPORTED_10baseT_Half, + .tx_start_page = ETHERM_TX_START_PAGE, + .stop_page = ETHERM_STOP_PAGE, +}; + +static struct etherh_data etherlan500_data = { + .ns8390_offset = ETHERH500_NS8390, + .dataport_offset = ETHERH500_NS8390 + ETHERH500_DATAPORT, + .ctrlport_offset = ETHERH500_CTRLPORT, + .ctrl_ioc = 1, + .name = "i3 EtherH 500", + .supported = SUPPORTED_10baseT_Half, + .tx_start_page = ETHERH_TX_START_PAGE, + .stop_page = ETHERH_STOP_PAGE, +}; + +static struct etherh_data etherlan600_data = { + .ns8390_offset = ETHERH600_NS8390, + .dataport_offset = ETHERH600_NS8390 + ETHERH600_DATAPORT, + .ctrlport_offset = ETHERH600_NS8390 + ETHERH600_CTRLPORT, + .name = "i3 EtherH 600", + .supported = SUPPORTED_10baseT_Half | SUPPORTED_TP | SUPPORTED_BNC | SUPPORTED_Autoneg, + .tx_start_page = ETHERH_TX_START_PAGE, + .stop_page = ETHERH_STOP_PAGE, +}; + +static struct etherh_data etherlan600a_data = { + .ns8390_offset = ETHERH600_NS8390, + .dataport_offset = ETHERH600_NS8390 + ETHERH600_DATAPORT, + .ctrlport_offset = ETHERH600_NS8390 + ETHERH600_CTRLPORT, + .name = "i3 EtherH 600A", + .supported = SUPPORTED_10baseT_Half | SUPPORTED_TP | SUPPORTED_BNC | SUPPORTED_Autoneg, + .tx_start_page = ETHERH_TX_START_PAGE, + .stop_page = ETHERH_STOP_PAGE, +}; + +static const struct ecard_id etherh_ids[] = { + { MANU_ANT, PROD_ANT_ETHERM, ðerm_data }, + { MANU_I3, PROD_I3_ETHERLAN500, ðerlan500_data }, + { MANU_I3, PROD_I3_ETHERLAN600, ðerlan600_data }, + { MANU_I3, PROD_I3_ETHERLAN600A, ðerlan600a_data }, + { 0xffff, 0xffff } +}; + +static struct ecard_driver etherh_driver = { + .probe = etherh_probe, + .remove = __devexit_p(etherh_remove), + .id_table = etherh_ids, + .drv = { + .name = DRV_NAME, + }, +}; + +static int __init etherh_init(void) +{ + int i; + + for (i = 0; i < 16; i++) { + etherh_regoffsets[i] = i << 2; + etherm_regoffsets[i] = i << 5; + } + + return ecard_register_driver(ðerh_driver); +} + +static void __exit etherh_exit(void) +{ + ecard_remove_driver(ðerh_driver); +} + +module_init(etherh_init); +module_exit(etherh_exit); |