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 39 static 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 56 static int hydra_init_one(struct zorro_dev *z, 57 const struct zorro_device_id *ent); 58 static int hydra_init(struct zorro_dev *z); 59 static int hydra_open(struct net_device *dev); 60 static int hydra_close(struct net_device *dev); 61 static void hydra_reset_8390(struct net_device *dev); 62 static void hydra_get_8390_hdr(struct net_device *dev, 63 struct e8390_pkt_hdr *hdr, int ring_page); 64 static void hydra_block_input(struct net_device *dev, int count, 65 struct sk_buff *skb, int ring_offset); 66 static void hydra_block_output(struct net_device *dev, int count, 67 const unsigned char *buf, int start_page); 68 static void hydra_remove_one(struct zorro_dev *z); 69 static u32 hydra_msg_enable; 70 71 static struct zorro_device_id hydra_zorro_tbl[] = { 72 { ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET }, 73 { 0 } 74 }; 75 MODULE_DEVICE_TABLE(zorro, hydra_zorro_tbl); 76 77 static struct zorro_driver hydra_driver = { 78 .name = "hydra", 79 .id_table = hydra_zorro_tbl, 80 .probe = hydra_init_one, 81 .remove = hydra_remove_one, 82 }; 83 84 static int hydra_init_one(struct zorro_dev *z, 85 const struct zorro_device_id *ent) 86 { 87 int err; 88 89 if (!request_mem_region(z->resource.start, 0x10000, "Hydra")) 90 return -EBUSY; 91 if ((err = hydra_init(z))) { 92 release_mem_region(z->resource.start, 0x10000); 93 return -EBUSY; 94 } 95 return 0; 96 } 97 98 static const struct net_device_ops hydra_netdev_ops = { 99 .ndo_open = hydra_open, 100 .ndo_stop = hydra_close, 101 102 .ndo_start_xmit = __ei_start_xmit, 103 .ndo_tx_timeout = __ei_tx_timeout, 104 .ndo_get_stats = __ei_get_stats, 105 .ndo_set_rx_mode = __ei_set_multicast_list, 106 .ndo_validate_addr = eth_validate_addr, 107 .ndo_set_mac_address = eth_mac_addr, 108 .ndo_change_mtu = eth_change_mtu, 109 #ifdef CONFIG_NET_POLL_CONTROLLER 110 .ndo_poll_controller = __ei_poll, 111 #endif 112 }; 113 114 static int hydra_init(struct zorro_dev *z) 115 { 116 struct net_device *dev; 117 unsigned long board = (unsigned long)ZTWO_VADDR(z->resource.start); 118 unsigned long ioaddr = board+HYDRA_NIC_BASE; 119 const char name[] = "NE2000"; 120 int start_page, stop_page; 121 int j; 122 int err; 123 struct ei_device *ei_local; 124 125 static u32 hydra_offsets[16] = { 126 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 127 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, 128 }; 129 130 dev = ____alloc_ei_netdev(0); 131 if (!dev) 132 return -ENOMEM; 133 134 for (j = 0; j < ETH_ALEN; j++) 135 dev->dev_addr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j)); 136 137 /* We must set the 8390 for word mode. */ 138 z_writeb(0x4b, ioaddr + NE_EN0_DCFG); 139 start_page = NESM_START_PG; 140 stop_page = NESM_STOP_PG; 141 142 ei_local = netdev_priv(dev); 143 ei_local->msg_enable = hydra_msg_enable; 144 dev->base_addr = ioaddr; 145 dev->irq = IRQ_AMIGA_PORTS; 146 147 /* Install the Interrupt handler */ 148 if (request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, "Hydra Ethernet", 149 dev)) { 150 free_netdev(dev); 151 return -EAGAIN; 152 } 153 154 ei_status.name = name; 155 ei_status.tx_start_page = start_page; 156 ei_status.stop_page = stop_page; 157 ei_status.word16 = 1; 158 ei_status.bigendian = 1; 159 160 ei_status.rx_start_page = start_page + TX_PAGES; 161 162 ei_status.reset_8390 = hydra_reset_8390; 163 ei_status.block_input = hydra_block_input; 164 ei_status.block_output = hydra_block_output; 165 ei_status.get_8390_hdr = hydra_get_8390_hdr; 166 ei_status.reg_offset = hydra_offsets; 167 168 dev->netdev_ops = &hydra_netdev_ops; 169 __NS8390_init(dev, 0); 170 171 err = register_netdev(dev); 172 if (err) { 173 free_irq(IRQ_AMIGA_PORTS, dev); 174 free_netdev(dev); 175 return err; 176 } 177 178 zorro_set_drvdata(z, dev); 179 180 pr_info("%s: Hydra at %pR, address %pM (hydra.c " HYDRA_VERSION ")\n", 181 dev->name, &z->resource, dev->dev_addr); 182 183 return 0; 184 } 185 186 static int hydra_open(struct net_device *dev) 187 { 188 __ei_open(dev); 189 return 0; 190 } 191 192 static int hydra_close(struct net_device *dev) 193 { 194 struct ei_device *ei_local = netdev_priv(dev); 195 196 netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n"); 197 __ei_close(dev); 198 return 0; 199 } 200 201 static void hydra_reset_8390(struct net_device *dev) 202 { 203 netdev_info(dev, "Hydra hw reset not there\n"); 204 } 205 206 static void hydra_get_8390_hdr(struct net_device *dev, 207 struct e8390_pkt_hdr *hdr, int ring_page) 208 { 209 int nic_base = dev->base_addr; 210 short *ptrs; 211 unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) + 212 ((ring_page - NESM_START_PG)<<8); 213 ptrs = (short *)hdr; 214 215 *(ptrs++) = z_readw(hdr_start); 216 *((short *)hdr) = WORDSWAP(*((short *)hdr)); 217 hdr_start += 2; 218 *(ptrs++) = z_readw(hdr_start); 219 *((short *)hdr+1) = WORDSWAP(*((short *)hdr+1)); 220 } 221 222 static void hydra_block_input(struct net_device *dev, int count, 223 struct sk_buff *skb, int ring_offset) 224 { 225 unsigned long nic_base = dev->base_addr; 226 unsigned long mem_base = nic_base - HYDRA_NIC_BASE; 227 unsigned long xfer_start = mem_base + ring_offset - (NESM_START_PG<<8); 228 229 if (count&1) 230 count++; 231 232 if (xfer_start+count > mem_base + (NESM_STOP_PG<<8)) { 233 int semi_count = (mem_base + (NESM_STOP_PG<<8)) - xfer_start; 234 235 z_memcpy_fromio(skb->data,xfer_start,semi_count); 236 count -= semi_count; 237 z_memcpy_fromio(skb->data+semi_count, mem_base, count); 238 } else 239 z_memcpy_fromio(skb->data, xfer_start,count); 240 241 } 242 243 static void hydra_block_output(struct net_device *dev, int count, 244 const unsigned char *buf, int start_page) 245 { 246 unsigned long nic_base = dev->base_addr; 247 unsigned long mem_base = nic_base - HYDRA_NIC_BASE; 248 249 if (count&1) 250 count++; 251 252 z_memcpy_toio(mem_base+((start_page - NESM_START_PG)<<8), buf, count); 253 } 254 255 static void hydra_remove_one(struct zorro_dev *z) 256 { 257 struct net_device *dev = zorro_get_drvdata(z); 258 259 unregister_netdev(dev); 260 free_irq(IRQ_AMIGA_PORTS, dev); 261 release_mem_region(ZTWO_PADDR(dev->base_addr)-HYDRA_NIC_BASE, 0x10000); 262 free_netdev(dev); 263 } 264 265 static int __init hydra_init_module(void) 266 { 267 return zorro_register_driver(&hydra_driver); 268 } 269 270 static void __exit hydra_cleanup_module(void) 271 { 272 zorro_unregister_driver(&hydra_driver); 273 } 274 275 module_init(hydra_init_module); 276 module_exit(hydra_cleanup_module); 277 278 MODULE_LICENSE("GPL"); 279