diff options
Diffstat (limited to 'drivers/net/ethernet/8390/hydra.c')
-rw-r--r-- | drivers/net/ethernet/8390/hydra.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/drivers/net/ethernet/8390/hydra.c b/drivers/net/ethernet/8390/hydra.c new file mode 100644 index 000000000..1df7601af --- /dev/null +++ b/drivers/net/ethernet/8390/hydra.c @@ -0,0 +1,275 @@ +/* New Hydra driver using generic 8390 core */ +/* Based on old hydra driver by Topi Kanerva (topi@susanna.oulu.fi) */ + +/* This file is subject to the terms and conditions of the GNU General */ +/* Public License. See the file COPYING in the main directory of the */ +/* Linux distribution for more details. */ + +/* Peter De Schrijver (p2@mind.be) */ +/* Oldenburg 2000 */ + +/* The Amiganet is a Zorro-II board made by Hydra Systems. It contains a */ +/* NS8390 NIC (network interface controller) clone, 16 or 64K on-board RAM */ +/* and 10BASE-2 (thin coax) and AUI connectors. */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/interrupt.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/init.h> +#include <linux/bitops.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/amigaints.h> +#include <asm/amigahw.h> +#include <linux/zorro.h> + +#define EI_SHIFT(x) (ei_local->reg_offset[x]) +#define ei_inb(port) in_8(port) +#define ei_outb(val,port) out_8(port,val) +#define ei_inb_p(port) in_8(port) +#define ei_outb_p(val,port) out_8(port,val) + +static const char version[] = + "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n"; + +#include "lib8390.c" + +#define NE_EN0_DCFG (0x0e*2) + +#define NESM_START_PG 0x0 /* First page of TX buffer */ +#define NESM_STOP_PG 0x40 /* Last page +1 of RX ring */ + +#define HYDRA_NIC_BASE 0xffe1 +#define HYDRA_ADDRPROM 0xffc0 +#define HYDRA_VERSION "v3.0alpha" + +#define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8)) + + +static int hydra_init_one(struct zorro_dev *z, + const struct zorro_device_id *ent); +static int hydra_init(struct zorro_dev *z); +static int hydra_open(struct net_device *dev); +static int hydra_close(struct net_device *dev); +static void hydra_reset_8390(struct net_device *dev); +static void hydra_get_8390_hdr(struct net_device *dev, + struct e8390_pkt_hdr *hdr, int ring_page); +static void hydra_block_input(struct net_device *dev, int count, + struct sk_buff *skb, int ring_offset); +static void hydra_block_output(struct net_device *dev, int count, + const unsigned char *buf, int start_page); +static void hydra_remove_one(struct zorro_dev *z); + +static struct zorro_device_id hydra_zorro_tbl[] = { + { ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET }, + { 0 } +}; +MODULE_DEVICE_TABLE(zorro, hydra_zorro_tbl); + +static struct zorro_driver hydra_driver = { + .name = "hydra", + .id_table = hydra_zorro_tbl, + .probe = hydra_init_one, + .remove = hydra_remove_one, +}; + +static int hydra_init_one(struct zorro_dev *z, + const struct zorro_device_id *ent) +{ + int err; + + if (!request_mem_region(z->resource.start, 0x10000, "Hydra")) + return -EBUSY; + if ((err = hydra_init(z))) { + release_mem_region(z->resource.start, 0x10000); + return -EBUSY; + } + return 0; +} + +static const struct net_device_ops hydra_netdev_ops = { + .ndo_open = hydra_open, + .ndo_stop = hydra_close, + + .ndo_start_xmit = __ei_start_xmit, + .ndo_tx_timeout = __ei_tx_timeout, + .ndo_get_stats = __ei_get_stats, + .ndo_set_rx_mode = __ei_set_multicast_list, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = __ei_poll, +#endif +}; + +static int hydra_init(struct zorro_dev *z) +{ + struct net_device *dev; + unsigned long board = (unsigned long)ZTWO_VADDR(z->resource.start); + unsigned long ioaddr = board+HYDRA_NIC_BASE; + const char name[] = "NE2000"; + int start_page, stop_page; + u8 macaddr[ETH_ALEN]; + int j; + int err; + + static u32 hydra_offsets[16] = { + 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, + 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, + }; + + dev = ____alloc_ei_netdev(0); + if (!dev) + return -ENOMEM; + + for (j = 0; j < ETH_ALEN; j++) + macaddr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j)); + eth_hw_addr_set(dev, macaddr); + + /* We must set the 8390 for word mode. */ + z_writeb(0x4b, ioaddr + NE_EN0_DCFG); + start_page = NESM_START_PG; + stop_page = NESM_STOP_PG; + + dev->base_addr = ioaddr; + dev->irq = IRQ_AMIGA_PORTS; + + /* Install the Interrupt handler */ + if (request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, "Hydra Ethernet", + dev)) { + free_netdev(dev); + return -EAGAIN; + } + + ei_status.name = name; + ei_status.tx_start_page = start_page; + ei_status.stop_page = stop_page; + ei_status.word16 = 1; + ei_status.bigendian = 1; + + ei_status.rx_start_page = start_page + TX_PAGES; + + ei_status.reset_8390 = hydra_reset_8390; + ei_status.block_input = hydra_block_input; + ei_status.block_output = hydra_block_output; + ei_status.get_8390_hdr = hydra_get_8390_hdr; + ei_status.reg_offset = hydra_offsets; + + dev->netdev_ops = &hydra_netdev_ops; + __NS8390_init(dev, 0); + + err = register_netdev(dev); + if (err) { + free_irq(IRQ_AMIGA_PORTS, dev); + free_netdev(dev); + return err; + } + + zorro_set_drvdata(z, dev); + + pr_info("%s: Hydra at %pR, address %pM (hydra.c " HYDRA_VERSION ")\n", + dev->name, &z->resource, dev->dev_addr); + + return 0; +} + +static int hydra_open(struct net_device *dev) +{ + __ei_open(dev); + return 0; +} + +static int hydra_close(struct net_device *dev) +{ + struct ei_device *ei_local = netdev_priv(dev); + + netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n"); + __ei_close(dev); + return 0; +} + +static void hydra_reset_8390(struct net_device *dev) +{ + netdev_info(dev, "Hydra hw reset not there\n"); +} + +static void hydra_get_8390_hdr(struct net_device *dev, + struct e8390_pkt_hdr *hdr, int ring_page) +{ + int nic_base = dev->base_addr; + short *ptrs; + unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) + + ((ring_page - NESM_START_PG)<<8); + ptrs = (short *)hdr; + + *(ptrs++) = z_readw(hdr_start); + *((short *)hdr) = WORDSWAP(*((short *)hdr)); + hdr_start += 2; + *(ptrs++) = z_readw(hdr_start); + *((short *)hdr+1) = WORDSWAP(*((short *)hdr+1)); +} + +static void hydra_block_input(struct net_device *dev, int count, + struct sk_buff *skb, int ring_offset) +{ + unsigned long nic_base = dev->base_addr; + unsigned long mem_base = nic_base - HYDRA_NIC_BASE; + unsigned long xfer_start = mem_base + ring_offset - (NESM_START_PG<<8); + + if (count&1) + count++; + + if (xfer_start+count > mem_base + (NESM_STOP_PG<<8)) { + int semi_count = (mem_base + (NESM_STOP_PG<<8)) - xfer_start; + + z_memcpy_fromio(skb->data,xfer_start,semi_count); + count -= semi_count; + z_memcpy_fromio(skb->data+semi_count, mem_base, count); + } else + z_memcpy_fromio(skb->data, xfer_start,count); + +} + +static void hydra_block_output(struct net_device *dev, int count, + const unsigned char *buf, int start_page) +{ + unsigned long nic_base = dev->base_addr; + unsigned long mem_base = nic_base - HYDRA_NIC_BASE; + + if (count&1) + count++; + + z_memcpy_toio(mem_base+((start_page - NESM_START_PG)<<8), buf, count); +} + +static void hydra_remove_one(struct zorro_dev *z) +{ + struct net_device *dev = zorro_get_drvdata(z); + + unregister_netdev(dev); + free_irq(IRQ_AMIGA_PORTS, dev); + release_mem_region(ZTWO_PADDR(dev->base_addr)-HYDRA_NIC_BASE, 0x10000); + free_netdev(dev); +} + +static int __init hydra_init_module(void) +{ + return zorro_register_driver(&hydra_driver); +} + +static void __exit hydra_cleanup_module(void) +{ + zorro_unregister_driver(&hydra_driver); +} + +module_init(hydra_init_module); +module_exit(hydra_cleanup_module); + +MODULE_LICENSE("GPL"); |