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