/* 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/slab.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> #include "8390.h" #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 __devinit hydra_init_one(struct zorro_dev *z, const struct zorro_device_id *ent); static int __devinit 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 __devexit hydra_remove_one(struct zorro_dev *z); static struct zorro_device_id hydra_zorro_tbl[] __devinitdata = { { ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET }, { 0 } }; static struct zorro_driver hydra_driver = { .name = "hydra", .id_table = hydra_zorro_tbl, .probe = hydra_init_one, .remove = __devexit_p(hydra_remove_one), }; static int __devinit 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 int __devinit hydra_init(struct zorro_dev *z) { struct net_device *dev; unsigned long board = ZTWO_VADDR(z->resource.start); unsigned long ioaddr = board+HYDRA_NIC_BASE; const char name[] = "NE2000"; int start_page, stop_page; 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(); if (!dev) return -ENOMEM; SET_MODULE_OWNER(dev); for(j = 0; j < ETHER_ADDR_LEN; j++) dev->dev_addr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j)); /* 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->open = &hydra_open; dev->stop = &hydra_close; #ifdef CONFIG_NET_POLL_CONTROLLER dev->poll_controller = ei_poll; #endif 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); printk(KERN_INFO "%s: Hydra at 0x%08lx, address " "%02x:%02x:%02x:%02x:%02x:%02x (hydra.c " HYDRA_VERSION ")\n", dev->name, z->resource.start, dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); return 0; } static int hydra_open(struct net_device *dev) { ei_open(dev); return 0; } static int hydra_close(struct net_device *dev) { if (ei_debug > 1) printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name); ei_close(dev); return 0; } static void hydra_reset_8390(struct net_device *dev) { printk(KERN_INFO "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 __devexit 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");