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/slab.h> 21#include <linux/interrupt.h> 22#include <linux/netdevice.h> 23#include <linux/etherdevice.h> 24#include <linux/skbuff.h> 25#include <linux/init.h> 26#include <linux/bitops.h> 27 28#include <asm/io.h> 29#include <asm/irq.h> 30#include <asm/amigaints.h> 31#include <asm/amigahw.h> 32#include <linux/zorro.h> 33 34#define EI_SHIFT(x) (ei_local->reg_offset[x]) 35#define ei_inb(port) in_8(port) 36#define ei_outb(val,port) out_8(port,val) 37#define ei_inb_p(port) in_8(port) 38#define ei_outb_p(val,port) out_8(port,val) 39 40static const char version[] = 41 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n"; 42 43#include "lib8390.c" 44 45#define NE_EN0_DCFG (0x0e*2) 46 47#define NESM_START_PG 0x0 /* First page of TX buffer */ 48#define NESM_STOP_PG 0x40 /* Last page +1 of RX ring */ 49 50#define HYDRA_NIC_BASE 0xffe1 51#define HYDRA_ADDRPROM 0xffc0 52#define HYDRA_VERSION "v3.0alpha" 53 54#define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8)) 55 56 57static int __devinit hydra_init_one(struct zorro_dev *z, 58 const struct zorro_device_id *ent); 59static int __devinit hydra_init(struct zorro_dev *z); 60static int hydra_open(struct net_device *dev); 61static int hydra_close(struct net_device *dev); 62static void hydra_reset_8390(struct net_device *dev); 63static void hydra_get_8390_hdr(struct net_device *dev, 64 struct e8390_pkt_hdr *hdr, int ring_page); 65static void hydra_block_input(struct net_device *dev, int count, 66 struct sk_buff *skb, int ring_offset); 67static void hydra_block_output(struct net_device *dev, int count, 68 const unsigned char *buf, int start_page); 69static void __devexit hydra_remove_one(struct zorro_dev *z); 70 71static struct zorro_device_id hydra_zorro_tbl[] __devinitdata = { 72 { ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET }, 73 { 0 } 74}; 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 int __devinit hydra_init(struct zorro_dev *z) 98{ 99 struct net_device *dev; 100 unsigned long board = ZTWO_VADDR(z->resource.start); 101 unsigned long ioaddr = board+HYDRA_NIC_BASE; 102 const char name[] = "NE2000"; 103 int start_page, stop_page; 104 int j; 105 int err; 106 107 static u32 hydra_offsets[16] = { 108 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 109 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, 110 }; 111 112 dev = ____alloc_ei_netdev(0); 113 if (!dev) 114 return -ENOMEM; 115 SET_MODULE_OWNER(dev); 116 117 for(j = 0; j < ETHER_ADDR_LEN; j++) 118 dev->dev_addr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j)); 119 120 /* We must set the 8390 for word mode. */ 121 z_writeb(0x4b, ioaddr + NE_EN0_DCFG); 122 start_page = NESM_START_PG; 123 stop_page = NESM_STOP_PG; 124 125 dev->base_addr = ioaddr; 126 dev->irq = IRQ_AMIGA_PORTS; 127 128 /* Install the Interrupt handler */ 129 if (request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, "Hydra Ethernet", 130 dev)) { 131 free_netdev(dev); 132 return -EAGAIN; 133 } 134 135 ei_status.name = name; 136 ei_status.tx_start_page = start_page; 137 ei_status.stop_page = stop_page; 138 ei_status.word16 = 1; 139 ei_status.bigendian = 1; 140 141 ei_status.rx_start_page = start_page + TX_PAGES; 142 143 ei_status.reset_8390 = &hydra_reset_8390; 144 ei_status.block_input = &hydra_block_input; 145 ei_status.block_output = &hydra_block_output; 146 ei_status.get_8390_hdr = &hydra_get_8390_hdr; 147 ei_status.reg_offset = hydra_offsets; 148 dev->open = &hydra_open; 149 dev->stop = &hydra_close; 150#ifdef CONFIG_NET_POLL_CONTROLLER 151 dev->poll_controller = __ei_poll; 152#endif 153 154 __NS8390_init(dev, 0); 155 156 err = register_netdev(dev); 157 if (err) { 158 free_irq(IRQ_AMIGA_PORTS, dev); 159 free_netdev(dev); 160 return err; 161 } 162 163 zorro_set_drvdata(z, dev); 164 165 printk(KERN_INFO "%s: Hydra at 0x%08lx, address " 166 "%02x:%02x:%02x:%02x:%02x:%02x (hydra.c " HYDRA_VERSION ")\n", 167 dev->name, z->resource.start, dev->dev_addr[0], dev->dev_addr[1], 168 dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4], 169 dev->dev_addr[5]); 170 171 return 0; 172} 173 174static int hydra_open(struct net_device *dev) 175{ 176 __ei_open(dev); 177 return 0; 178} 179 180static int hydra_close(struct net_device *dev) 181{ 182 if (ei_debug > 1) 183 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name); 184 __ei_close(dev); 185 return 0; 186} 187 188static void hydra_reset_8390(struct net_device *dev) 189{ 190 printk(KERN_INFO "Hydra hw reset not there\n"); 191} 192 193static void hydra_get_8390_hdr(struct net_device *dev, 194 struct e8390_pkt_hdr *hdr, int ring_page) 195{ 196 int nic_base = dev->base_addr; 197 short *ptrs; 198 unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) + 199 ((ring_page - NESM_START_PG)<<8); 200 ptrs = (short *)hdr; 201 202 *(ptrs++) = z_readw(hdr_start); 203 *((short *)hdr) = WORDSWAP(*((short *)hdr)); 204 hdr_start += 2; 205 *(ptrs++) = z_readw(hdr_start); 206 *((short *)hdr+1) = WORDSWAP(*((short *)hdr+1)); 207} 208 209static void hydra_block_input(struct net_device *dev, int count, 210 struct sk_buff *skb, int ring_offset) 211{ 212 unsigned long nic_base = dev->base_addr; 213 unsigned long mem_base = nic_base - HYDRA_NIC_BASE; 214 unsigned long xfer_start = mem_base + ring_offset - (NESM_START_PG<<8); 215 216 if (count&1) 217 count++; 218 219 if (xfer_start+count > mem_base + (NESM_STOP_PG<<8)) { 220 int semi_count = (mem_base + (NESM_STOP_PG<<8)) - xfer_start; 221 222 z_memcpy_fromio(skb->data,xfer_start,semi_count); 223 count -= semi_count; 224 z_memcpy_fromio(skb->data+semi_count, mem_base, count); 225 } else 226 z_memcpy_fromio(skb->data, xfer_start,count); 227 228} 229 230static void hydra_block_output(struct net_device *dev, int count, 231 const unsigned char *buf, int start_page) 232{ 233 unsigned long nic_base = dev->base_addr; 234 unsigned long mem_base = nic_base - HYDRA_NIC_BASE; 235 236 if (count&1) 237 count++; 238 239 z_memcpy_toio(mem_base+((start_page - NESM_START_PG)<<8), buf, count); 240} 241 242static void __devexit hydra_remove_one(struct zorro_dev *z) 243{ 244 struct net_device *dev = zorro_get_drvdata(z); 245 246 unregister_netdev(dev); 247 free_irq(IRQ_AMIGA_PORTS, dev); 248 release_mem_region(ZTWO_PADDR(dev->base_addr)-HYDRA_NIC_BASE, 0x10000); 249 free_netdev(dev); 250} 251 252static int __init hydra_init_module(void) 253{ 254 return zorro_register_driver(&hydra_driver); 255} 256 257static void __exit hydra_cleanup_module(void) 258{ 259 zorro_unregister_driver(&hydra_driver); 260} 261 262module_init(hydra_init_module); 263module_exit(hydra_cleanup_module); 264 265MODULE_LICENSE("GPL"); 266