1/* New Hydra driver using generic 8390 core */ 2/* Based on old hydra driver by Topi Kanerva (topi@susanna.oulu.fi) */ 3 4/* This file is subject to the terms and conditions of the GNU General */ 5/* Public License. See the file COPYING in the main directory of the */ 6/* Linux distribution for more details. */ 7 8/* Peter De Schrijver (p2@mind.be) */ 9/* Oldenburg 2000 */ 10 11/* The Amiganet is a Zorro-II board made by Hydra Systems. It contains a */ 12/* NS8390 NIC (network interface controller) clone, 16 or 64K on-board RAM */ 13/* and 10BASE-2 (thin coax) and AUI connectors. */ 14 15#include <linux/module.h> 16#include <linux/kernel.h> 17#include <linux/string.h> 18#include <linux/errno.h> 19#include <linux/ioport.h> 20#include <linux/interrupt.h> 21#include <linux/netdevice.h> 22#include <linux/etherdevice.h> 23#include <linux/skbuff.h> 24#include <linux/init.h> 25#include <linux/bitops.h> 26 27#include <asm/io.h> 28#include <asm/irq.h> 29#include <asm/amigaints.h> 30#include <asm/amigahw.h> 31#include <linux/zorro.h> 32 33#define EI_SHIFT(x) (ei_local->reg_offset[x]) 34#define ei_inb(port) in_8(port) 35#define ei_outb(val,port) out_8(port,val) 36#define ei_inb_p(port) in_8(port) 37#define ei_outb_p(val,port) out_8(port,val) 38 39static const char version[] = 40 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n"; 41 42#include "lib8390.c" 43 44#define NE_EN0_DCFG (0x0e*2) 45 46#define NESM_START_PG 0x0 /* First page of TX buffer */ 47#define NESM_STOP_PG 0x40 /* Last page +1 of RX ring */ 48 49#define HYDRA_NIC_BASE 0xffe1 50#define HYDRA_ADDRPROM 0xffc0 51#define HYDRA_VERSION "v3.0alpha" 52 53#define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8)) 54 55 56static int __devinit hydra_init_one(struct zorro_dev *z, 57 const struct zorro_device_id *ent); 58static int __devinit hydra_init(struct zorro_dev *z); 59static int hydra_open(struct net_device *dev); 60static int hydra_close(struct net_device *dev); 61static void hydra_reset_8390(struct net_device *dev); 62static void hydra_get_8390_hdr(struct net_device *dev, 63 struct e8390_pkt_hdr *hdr, int ring_page); 64static void hydra_block_input(struct net_device *dev, int count, 65 struct sk_buff *skb, int ring_offset); 66static void hydra_block_output(struct net_device *dev, int count, 67 const unsigned char *buf, int start_page); 68static void __devexit hydra_remove_one(struct zorro_dev *z); 69 70static struct zorro_device_id hydra_zorro_tbl[] __devinitdata = { 71 { ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET }, 72 { 0 } 73}; 74MODULE_DEVICE_TABLE(zorro, hydra_zorro_tbl); 75 76static struct zorro_driver hydra_driver = { 77 .name = "hydra", 78 .id_table = hydra_zorro_tbl, 79 .probe = hydra_init_one, 80 .remove = __devexit_p(hydra_remove_one), 81}; 82 83static int __devinit hydra_init_one(struct zorro_dev *z, 84 const struct zorro_device_id *ent) 85{ 86 int err; 87 88 if (!request_mem_region(z->resource.start, 0x10000, "Hydra")) 89 return -EBUSY; 90 if ((err = hydra_init(z))) { 91 release_mem_region(z->resource.start, 0x10000); 92 return -EBUSY; 93 } 94 return 0; 95} 96 97static const struct net_device_ops hydra_netdev_ops = { 98 .ndo_open = hydra_open, 99 .ndo_stop = hydra_close, 100 101 .ndo_start_xmit = ei_start_xmit, 102 .ndo_tx_timeout = ei_tx_timeout, 103 .ndo_get_stats = ei_get_stats, 104 .ndo_set_multicast_list = ei_set_multicast_list, 105 .ndo_validate_addr = eth_validate_addr, 106 .ndo_set_mac_address = eth_mac_addr, 107 .ndo_change_mtu = eth_change_mtu, 108#ifdef CONFIG_NET_POLL_CONTROLLER 109 .ndo_poll_controller = ei_poll, 110#endif 111}; 112 113static int __devinit hydra_init(struct zorro_dev *z) 114{ 115 struct net_device *dev; 116 unsigned long board = ZTWO_VADDR(z->resource.start); 117 unsigned long ioaddr = board+HYDRA_NIC_BASE; 118 const char name[] = "NE2000"; 119 int start_page, stop_page; 120 int j; 121 int err; 122 123 static u32 hydra_offsets[16] = { 124 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 125 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, 126 }; 127 128 dev = alloc_ei_netdev(); 129 if (!dev) 130 return -ENOMEM; 131 132 for(j = 0; j < ETHER_ADDR_LEN; j++) 133 dev->dev_addr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j)); 134 135 /* We must set the 8390 for word mode. */ 136 z_writeb(0x4b, ioaddr + NE_EN0_DCFG); 137 start_page = NESM_START_PG; 138 stop_page = NESM_STOP_PG; 139 140 dev->base_addr = ioaddr; 141 dev->irq = IRQ_AMIGA_PORTS; 142 143 /* Install the Interrupt handler */ 144 if (request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, "Hydra Ethernet", 145 dev)) { 146 free_netdev(dev); 147 return -EAGAIN; 148 } 149 150 ei_status.name = name; 151 ei_status.tx_start_page = start_page; 152 ei_status.stop_page = stop_page; 153 ei_status.word16 = 1; 154 ei_status.bigendian = 1; 155 156 ei_status.rx_start_page = start_page + TX_PAGES; 157 158 ei_status.reset_8390 = &hydra_reset_8390; 159 ei_status.block_input = &hydra_block_input; 160 ei_status.block_output = &hydra_block_output; 161 ei_status.get_8390_hdr = &hydra_get_8390_hdr; 162 ei_status.reg_offset = hydra_offsets; 163 164 dev->netdev_ops = &hydra_netdev_ops; 165 __NS8390_init(dev, 0); 166 167 err = register_netdev(dev); 168 if (err) { 169 free_irq(IRQ_AMIGA_PORTS, dev); 170 free_netdev(dev); 171 return err; 172 } 173 174 zorro_set_drvdata(z, dev); 175 176 printk(KERN_INFO "%s: Hydra at 0x%08llx, address " 177 "%pM (hydra.c " HYDRA_VERSION ")\n", 178 dev->name, (unsigned long long)z->resource.start, dev->dev_addr); 179 180 return 0; 181} 182 183static int hydra_open(struct net_device *dev) 184{ 185 __ei_open(dev); 186 return 0; 187} 188 189static int hydra_close(struct net_device *dev) 190{ 191 if (ei_debug > 1) 192 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name); 193 __ei_close(dev); 194 return 0; 195} 196 197static void hydra_reset_8390(struct net_device *dev) 198{ 199 printk(KERN_INFO "Hydra hw reset not there\n"); 200} 201 202static void hydra_get_8390_hdr(struct net_device *dev, 203 struct e8390_pkt_hdr *hdr, int ring_page) 204{ 205 int nic_base = dev->base_addr; 206 short *ptrs; 207 unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) + 208 ((ring_page - NESM_START_PG)<<8); 209 ptrs = (short *)hdr; 210 211 *(ptrs++) = z_readw(hdr_start); 212 *((short *)hdr) = WORDSWAP(*((short *)hdr)); 213 hdr_start += 2; 214 *(ptrs++) = z_readw(hdr_start); 215 *((short *)hdr+1) = WORDSWAP(*((short *)hdr+1)); 216} 217 218static void hydra_block_input(struct net_device *dev, int count, 219 struct sk_buff *skb, int ring_offset) 220{ 221 unsigned long nic_base = dev->base_addr; 222 unsigned long mem_base = nic_base - HYDRA_NIC_BASE; 223 unsigned long xfer_start = mem_base + ring_offset - (NESM_START_PG<<8); 224 225 if (count&1) 226 count++; 227 228 if (xfer_start+count > mem_base + (NESM_STOP_PG<<8)) { 229 int semi_count = (mem_base + (NESM_STOP_PG<<8)) - xfer_start; 230 231 z_memcpy_fromio(skb->data,xfer_start,semi_count); 232 count -= semi_count; 233 z_memcpy_fromio(skb->data+semi_count, mem_base, count); 234 } else 235 z_memcpy_fromio(skb->data, xfer_start,count); 236 237} 238 239static void hydra_block_output(struct net_device *dev, int count, 240 const unsigned char *buf, int start_page) 241{ 242 unsigned long nic_base = dev->base_addr; 243 unsigned long mem_base = nic_base - HYDRA_NIC_BASE; 244 245 if (count&1) 246 count++; 247 248 z_memcpy_toio(mem_base+((start_page - NESM_START_PG)<<8), buf, count); 249} 250 251static void __devexit hydra_remove_one(struct zorro_dev *z) 252{ 253 struct net_device *dev = zorro_get_drvdata(z); 254 255 unregister_netdev(dev); 256 free_irq(IRQ_AMIGA_PORTS, dev); 257 release_mem_region(ZTWO_PADDR(dev->base_addr)-HYDRA_NIC_BASE, 0x10000); 258 free_netdev(dev); 259} 260 261static int __init hydra_init_module(void) 262{ 263 return zorro_register_driver(&hydra_driver); 264} 265 266static void __exit hydra_cleanup_module(void) 267{ 268 zorro_unregister_driver(&hydra_driver); 269} 270 271module_init(hydra_init_module); 272module_exit(hydra_cleanup_module); 273 274MODULE_LICENSE("GPL"); 275