1/* 2 * Amiga Linux/m68k and Linux/PPC Zorro NS8390 Ethernet Driver 3 * 4 * (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM) 5 * 6 * --------------------------------------------------------------------------- 7 * 8 * This program is based on all the other NE2000 drivers for Linux 9 * 10 * --------------------------------------------------------------------------- 11 * 12 * This file is subject to the terms and conditions of the GNU General Public 13 * License. See the file COPYING in the main directory of the Linux 14 * distribution for more details. 15 * 16 * --------------------------------------------------------------------------- 17 * 18 * The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS 19 * Ethernet Controllers. 20 */ 21 22#include <linux/module.h> 23#include <linux/kernel.h> 24#include <linux/errno.h> 25#include <linux/init.h> 26#include <linux/delay.h> 27#include <linux/netdevice.h> 28#include <linux/etherdevice.h> 29#include <linux/zorro.h> 30#include <linux/jiffies.h> 31 32#include <asm/system.h> 33#include <asm/irq.h> 34#include <asm/amigaints.h> 35#include <asm/amigahw.h> 36 37#define EI_SHIFT(x) (ei_local->reg_offset[x]) 38#define ei_inb(port) in_8(port) 39#define ei_outb(val,port) out_8(port,val) 40#define ei_inb_p(port) in_8(port) 41#define ei_outb_p(val,port) out_8(port,val) 42 43static const char version[] = 44 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n"; 45 46#include "lib8390.c" 47 48#define DRV_NAME "zorro8390" 49 50#define NE_BASE (dev->base_addr) 51#define NE_CMD (0x00*2) 52#define NE_DATAPORT (0x10*2) /* NatSemi-defined port window offset. */ 53#define NE_RESET (0x1f*2) /* Issue a read to reset, a write to clear. */ 54#define NE_IO_EXTENT (0x20*2) 55 56#define NE_EN0_ISR (0x07*2) 57#define NE_EN0_DCFG (0x0e*2) 58 59#define NE_EN0_RSARLO (0x08*2) 60#define NE_EN0_RSARHI (0x09*2) 61#define NE_EN0_RCNTLO (0x0a*2) 62#define NE_EN0_RXCR (0x0c*2) 63#define NE_EN0_TXCR (0x0d*2) 64#define NE_EN0_RCNTHI (0x0b*2) 65#define NE_EN0_IMR (0x0f*2) 66 67#define NESM_START_PG 0x40 /* First page of TX buffer */ 68#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 69 70 71#define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8)) 72 73 74static struct card_info { 75 zorro_id id; 76 const char *name; 77 unsigned int offset; 78} cards[] __devinitdata = { 79 { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 }, 80 { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 }, 81}; 82 83static int __devinit zorro8390_init_one(struct zorro_dev *z, 84 const struct zorro_device_id *ent); 85static int __devinit zorro8390_init(struct net_device *dev, 86 unsigned long board, const char *name, 87 unsigned long ioaddr); 88static int zorro8390_open(struct net_device *dev); 89static int zorro8390_close(struct net_device *dev); 90static void zorro8390_reset_8390(struct net_device *dev); 91static void zorro8390_get_8390_hdr(struct net_device *dev, 92 struct e8390_pkt_hdr *hdr, int ring_page); 93static void zorro8390_block_input(struct net_device *dev, int count, 94 struct sk_buff *skb, int ring_offset); 95static void zorro8390_block_output(struct net_device *dev, const int count, 96 const unsigned char *buf, 97 const int start_page); 98static void __devexit zorro8390_remove_one(struct zorro_dev *z); 99 100static struct zorro_device_id zorro8390_zorro_tbl[] __devinitdata = { 101 { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, }, 102 { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, }, 103 { 0 } 104}; 105MODULE_DEVICE_TABLE(zorro, zorro8390_zorro_tbl); 106 107static struct zorro_driver zorro8390_driver = { 108 .name = "zorro8390", 109 .id_table = zorro8390_zorro_tbl, 110 .probe = zorro8390_init_one, 111 .remove = __devexit_p(zorro8390_remove_one), 112}; 113 114static int __devinit zorro8390_init_one(struct zorro_dev *z, 115 const struct zorro_device_id *ent) 116{ 117 struct net_device *dev; 118 unsigned long board, ioaddr; 119 int err, i; 120 121 for (i = ARRAY_SIZE(cards)-1; i >= 0; i--) 122 if (z->id == cards[i].id) 123 break; 124 if (i < 0) 125 return -ENODEV; 126 127 board = z->resource.start; 128 ioaddr = board+cards[i].offset; 129 dev = alloc_ei_netdev(); 130 if (!dev) 131 return -ENOMEM; 132 if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, DRV_NAME)) { 133 free_netdev(dev); 134 return -EBUSY; 135 } 136 if ((err = zorro8390_init(dev, board, cards[i].name, 137 ZTWO_VADDR(ioaddr)))) { 138 release_mem_region(ioaddr, NE_IO_EXTENT*2); 139 free_netdev(dev); 140 return err; 141 } 142 zorro_set_drvdata(z, dev); 143 return 0; 144} 145 146static const struct net_device_ops zorro8390_netdev_ops = { 147 .ndo_open = zorro8390_open, 148 .ndo_stop = zorro8390_close, 149 .ndo_start_xmit = ei_start_xmit, 150 .ndo_tx_timeout = ei_tx_timeout, 151 .ndo_get_stats = ei_get_stats, 152 .ndo_set_multicast_list = ei_set_multicast_list, 153 .ndo_validate_addr = eth_validate_addr, 154 .ndo_set_mac_address = eth_mac_addr, 155 .ndo_change_mtu = eth_change_mtu, 156#ifdef CONFIG_NET_POLL_CONTROLLER 157 .ndo_poll_controller = ei_poll, 158#endif 159}; 160 161static int __devinit zorro8390_init(struct net_device *dev, 162 unsigned long board, const char *name, 163 unsigned long ioaddr) 164{ 165 int i; 166 int err; 167 unsigned char SA_prom[32]; 168 int start_page, stop_page; 169 static u32 zorro8390_offsets[16] = { 170 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 171 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, 172 }; 173 174 /* Reset card. Who knows what dain-bramaged state it was left in. */ 175 { 176 unsigned long reset_start_time = jiffies; 177 178 z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET); 179 180 while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0) 181 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 182 printk(KERN_WARNING " not found (no reset ack).\n"); 183 return -ENODEV; 184 } 185 186 z_writeb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */ 187 } 188 189 /* Read the 16 bytes of station address PROM. 190 We must first initialize registers, similar to NS8390_init(eifdev, 0). 191 We can't reliably read the SAPROM address without this. 192 (I learned the hard way!). */ 193 { 194 struct { 195 u32 value; 196 u32 offset; 197 } program_seq[] = { 198 {E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/ 199 {0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */ 200 {0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */ 201 {0x00, NE_EN0_RCNTHI}, 202 {0x00, NE_EN0_IMR}, /* Mask completion irq. */ 203 {0xFF, NE_EN0_ISR}, 204 {E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */ 205 {E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */ 206 {32, NE_EN0_RCNTLO}, 207 {0x00, NE_EN0_RCNTHI}, 208 {0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */ 209 {0x00, NE_EN0_RSARHI}, 210 {E8390_RREAD+E8390_START, NE_CMD}, 211 }; 212 for (i = 0; i < ARRAY_SIZE(program_seq); i++) { 213 z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset); 214 } 215 } 216 for (i = 0; i < 16; i++) { 217 SA_prom[i] = z_readb(ioaddr + NE_DATAPORT); 218 (void)z_readb(ioaddr + NE_DATAPORT); 219 } 220 221 /* We must set the 8390 for word mode. */ 222 z_writeb(0x49, ioaddr + NE_EN0_DCFG); 223 start_page = NESM_START_PG; 224 stop_page = NESM_STOP_PG; 225 226 dev->base_addr = ioaddr; 227 dev->irq = IRQ_AMIGA_PORTS; 228 229 /* Install the Interrupt handler */ 230 i = request_irq(IRQ_AMIGA_PORTS, __ei_interrupt, IRQF_SHARED, DRV_NAME, dev); 231 if (i) return i; 232 233 for(i = 0; i < ETHER_ADDR_LEN; i++) 234 dev->dev_addr[i] = SA_prom[i]; 235 236#ifdef DEBUG 237 printk("%pM", dev->dev_addr); 238#endif 239 240 ei_status.name = name; 241 ei_status.tx_start_page = start_page; 242 ei_status.stop_page = stop_page; 243 ei_status.word16 = 1; 244 245 ei_status.rx_start_page = start_page + TX_PAGES; 246 247 ei_status.reset_8390 = &zorro8390_reset_8390; 248 ei_status.block_input = &zorro8390_block_input; 249 ei_status.block_output = &zorro8390_block_output; 250 ei_status.get_8390_hdr = &zorro8390_get_8390_hdr; 251 ei_status.reg_offset = zorro8390_offsets; 252 253 dev->netdev_ops = &zorro8390_netdev_ops; 254 __NS8390_init(dev, 0); 255 err = register_netdev(dev); 256 if (err) { 257 free_irq(IRQ_AMIGA_PORTS, dev); 258 return err; 259 } 260 261 printk(KERN_INFO "%s: %s at 0x%08lx, Ethernet Address %pM\n", 262 dev->name, name, board, dev->dev_addr); 263 264 return 0; 265} 266 267static int zorro8390_open(struct net_device *dev) 268{ 269 __ei_open(dev); 270 return 0; 271} 272 273static int zorro8390_close(struct net_device *dev) 274{ 275 if (ei_debug > 1) 276 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name); 277 __ei_close(dev); 278 return 0; 279} 280 281/* Hard reset the card. This used to pause for the same period that a 282 8390 reset command required, but that shouldn't be necessary. */ 283static void zorro8390_reset_8390(struct net_device *dev) 284{ 285 unsigned long reset_start_time = jiffies; 286 287 if (ei_debug > 1) 288 printk(KERN_DEBUG "resetting the 8390 t=%ld...\n", jiffies); 289 290 z_writeb(z_readb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 291 292 ei_status.txing = 0; 293 ei_status.dmaing = 0; 294 295 /* This check _should_not_ be necessary, omit eventually. */ 296 while ((z_readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0) 297 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 298 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", 299 dev->name); 300 break; 301 } 302 z_writeb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr. */ 303} 304 305/* Grab the 8390 specific header. Similar to the block_input routine, but 306 we don't need to be concerned with ring wrap as the header will be at 307 the start of a page, so we optimize accordingly. */ 308 309static void zorro8390_get_8390_hdr(struct net_device *dev, 310 struct e8390_pkt_hdr *hdr, int ring_page) 311{ 312 int nic_base = dev->base_addr; 313 int cnt; 314 short *ptrs; 315 316 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 317 if (ei_status.dmaing) { 318 printk(KERN_ERR "%s: DMAing conflict in ne_get_8390_hdr " 319 "[DMAstat:%d][irqlock:%d].\n", dev->name, ei_status.dmaing, 320 ei_status.irqlock); 321 return; 322 } 323 324 ei_status.dmaing |= 0x01; 325 z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 326 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); 327 z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO); 328 z_writeb(0, nic_base + NE_EN0_RCNTHI); 329 z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */ 330 z_writeb(ring_page, nic_base + NE_EN0_RSARHI); 331 z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 332 333 ptrs = (short*)hdr; 334 for (cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++) 335 *ptrs++ = z_readw(NE_BASE + NE_DATAPORT); 336 337 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ 338 339 hdr->count = WORDSWAP(hdr->count); 340 341 ei_status.dmaing &= ~0x01; 342} 343 344/* Block input and output, similar to the Crynwr packet driver. If you 345 are porting to a new ethercard, look at the packet driver source for hints. 346 The NEx000 doesn't share the on-board packet memory -- you have to put 347 the packet out through the "remote DMA" dataport using z_writeb. */ 348 349static void zorro8390_block_input(struct net_device *dev, int count, 350 struct sk_buff *skb, int ring_offset) 351{ 352 int nic_base = dev->base_addr; 353 char *buf = skb->data; 354 short *ptrs; 355 int cnt; 356 357 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 358 if (ei_status.dmaing) { 359 printk(KERN_ERR "%s: DMAing conflict in ne_block_input " 360 "[DMAstat:%d][irqlock:%d].\n", 361 dev->name, ei_status.dmaing, ei_status.irqlock); 362 return; 363 } 364 ei_status.dmaing |= 0x01; 365 z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 366 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); 367 z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO); 368 z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI); 369 z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO); 370 z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI); 371 z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 372 ptrs = (short*)buf; 373 for (cnt = 0; cnt < (count>>1); cnt++) 374 *ptrs++ = z_readw(NE_BASE + NE_DATAPORT); 375 if (count & 0x01) 376 buf[count-1] = z_readb(NE_BASE + NE_DATAPORT); 377 378 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ 379 ei_status.dmaing &= ~0x01; 380} 381 382static void zorro8390_block_output(struct net_device *dev, int count, 383 const unsigned char *buf, 384 const int start_page) 385{ 386 int nic_base = NE_BASE; 387 unsigned long dma_start; 388 short *ptrs; 389 int cnt; 390 391 /* Round the count up for word writes. Do we need to do this? 392 What effect will an odd byte count have on the 8390? 393 I should check someday. */ 394 if (count & 0x01) 395 count++; 396 397 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 398 if (ei_status.dmaing) { 399 printk(KERN_ERR "%s: DMAing conflict in ne_block_output." 400 "[DMAstat:%d][irqlock:%d]\n", dev->name, ei_status.dmaing, 401 ei_status.irqlock); 402 return; 403 } 404 ei_status.dmaing |= 0x01; 405 /* We should already be in page 0, but to be safe... */ 406 z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 407 408 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); 409 410 /* Now the normal output. */ 411 z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO); 412 z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI); 413 z_writeb(0x00, nic_base + NE_EN0_RSARLO); 414 z_writeb(start_page, nic_base + NE_EN0_RSARHI); 415 416 z_writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 417 ptrs = (short*)buf; 418 for (cnt = 0; cnt < count>>1; cnt++) 419 z_writew(*ptrs++, NE_BASE+NE_DATAPORT); 420 421 dma_start = jiffies; 422 423 while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0) 424 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ 425 printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n", 426 dev->name); 427 zorro8390_reset_8390(dev); 428 __NS8390_init(dev,1); 429 break; 430 } 431 432 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ 433 ei_status.dmaing &= ~0x01; 434} 435 436static void __devexit zorro8390_remove_one(struct zorro_dev *z) 437{ 438 struct net_device *dev = zorro_get_drvdata(z); 439 440 unregister_netdev(dev); 441 free_irq(IRQ_AMIGA_PORTS, dev); 442 release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT*2); 443 free_netdev(dev); 444} 445 446static int __init zorro8390_init_module(void) 447{ 448 return zorro_register_driver(&zorro8390_driver); 449} 450 451static void __exit zorro8390_cleanup_module(void) 452{ 453 zorro_unregister_driver(&zorro8390_driver); 454} 455 456module_init(zorro8390_init_module); 457module_exit(zorro8390_cleanup_module); 458 459MODULE_LICENSE("GPL"); 460