Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Amiga Linux/m68k Ariadne Ethernet Driver |
| 3 | * |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 4 | * © Copyright 1995-2003 by Geert Uytterhoeven (geert@linux-m68k.org) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Peter De Schrijver (p2@mind.be) |
| 6 | * |
| 7 | * --------------------------------------------------------------------------- |
| 8 | * |
| 9 | * This program is based on |
| 10 | * |
| 11 | * lance.c: An AMD LANCE ethernet driver for linux. |
| 12 | * Written 1993-94 by Donald Becker. |
| 13 | * |
| 14 | * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller |
| 15 | * Advanced Micro Devices |
| 16 | * Publication #16907, Rev. B, Amendment/0, May 1994 |
| 17 | * |
| 18 | * MC68230: Parallel Interface/Timer (PI/T) |
| 19 | * Motorola Semiconductors, December, 1983 |
| 20 | * |
| 21 | * --------------------------------------------------------------------------- |
| 22 | * |
| 23 | * This file is subject to the terms and conditions of the GNU General Public |
| 24 | * License. See the file COPYING in the main directory of the Linux |
| 25 | * distribution for more details. |
| 26 | * |
| 27 | * --------------------------------------------------------------------------- |
| 28 | * |
| 29 | * The Ariadne is a Zorro-II board made by Village Tronic. It contains: |
| 30 | * |
| 31 | * - an Am79C960 PCnet-ISA Single-Chip Ethernet Controller with both |
| 32 | * 10BASE-2 (thin coax) and 10BASE-T (UTP) connectors |
| 33 | * |
| 34 | * - an MC68230 Parallel Interface/Timer configured as 2 parallel ports |
| 35 | */ |
| 36 | |
| 37 | #include <linux/module.h> |
| 38 | #include <linux/stddef.h> |
| 39 | #include <linux/kernel.h> |
| 40 | #include <linux/string.h> |
| 41 | #include <linux/errno.h> |
| 42 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <linux/netdevice.h> |
| 44 | #include <linux/etherdevice.h> |
| 45 | #include <linux/interrupt.h> |
| 46 | #include <linux/skbuff.h> |
| 47 | #include <linux/init.h> |
| 48 | #include <linux/zorro.h> |
| 49 | #include <linux/bitops.h> |
| 50 | |
| 51 | #include <asm/amigaints.h> |
| 52 | #include <asm/amigahw.h> |
| 53 | #include <asm/irq.h> |
| 54 | |
| 55 | #include "ariadne.h" |
| 56 | |
| 57 | |
| 58 | #ifdef ARIADNE_DEBUG |
| 59 | int ariadne_debug = ARIADNE_DEBUG; |
| 60 | #else |
| 61 | int ariadne_debug = 1; |
| 62 | #endif |
| 63 | |
| 64 | |
| 65 | /* |
| 66 | * Macros to Fix Endianness problems |
| 67 | */ |
| 68 | |
| 69 | /* Swap the Bytes in a WORD */ |
| 70 | #define swapw(x) (((x>>8)&0x00ff)|((x<<8)&0xff00)) |
| 71 | /* Get the Low BYTE in a WORD */ |
| 72 | #define lowb(x) (x&0xff) |
| 73 | /* Get the Swapped High WORD in a LONG */ |
| 74 | #define swhighw(x) ((((x)>>8)&0xff00)|(((x)>>24)&0x00ff)) |
| 75 | /* Get the Swapped Low WORD in a LONG */ |
| 76 | #define swloww(x) ((((x)<<8)&0xff00)|(((x)>>8)&0x00ff)) |
| 77 | |
| 78 | |
| 79 | /* |
| 80 | * Transmit/Receive Ring Definitions |
| 81 | */ |
| 82 | |
| 83 | #define TX_RING_SIZE 5 |
| 84 | #define RX_RING_SIZE 16 |
| 85 | |
| 86 | #define PKT_BUF_SIZE 1520 |
| 87 | |
| 88 | |
| 89 | /* |
| 90 | * Private Device Data |
| 91 | */ |
| 92 | |
| 93 | struct ariadne_private { |
| 94 | volatile struct TDRE *tx_ring[TX_RING_SIZE]; |
| 95 | volatile struct RDRE *rx_ring[RX_RING_SIZE]; |
| 96 | volatile u_short *tx_buff[TX_RING_SIZE]; |
| 97 | volatile u_short *rx_buff[RX_RING_SIZE]; |
| 98 | int cur_tx, cur_rx; /* The next free ring entry */ |
| 99 | int dirty_tx; /* The ring entries to be free()ed. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | char tx_full; |
| 101 | }; |
| 102 | |
| 103 | |
| 104 | /* |
| 105 | * Structure Created in the Ariadne's RAM Buffer |
| 106 | */ |
| 107 | |
| 108 | struct lancedata { |
| 109 | struct TDRE tx_ring[TX_RING_SIZE]; |
| 110 | struct RDRE rx_ring[RX_RING_SIZE]; |
| 111 | u_short tx_buff[TX_RING_SIZE][PKT_BUF_SIZE/sizeof(u_short)]; |
| 112 | u_short rx_buff[RX_RING_SIZE][PKT_BUF_SIZE/sizeof(u_short)]; |
| 113 | }; |
| 114 | |
| 115 | static int ariadne_open(struct net_device *dev); |
| 116 | static void ariadne_init_ring(struct net_device *dev); |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 117 | static netdev_tx_t ariadne_start_xmit(struct sk_buff *skb, |
| 118 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | static void ariadne_tx_timeout(struct net_device *dev); |
| 120 | static int ariadne_rx(struct net_device *dev); |
| 121 | static void ariadne_reset(struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 122 | static irqreturn_t ariadne_interrupt(int irq, void *data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | static int ariadne_close(struct net_device *dev); |
| 124 | static struct net_device_stats *ariadne_get_stats(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | static void set_multicast_list(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
| 127 | |
| 128 | static void memcpyw(volatile u_short *dest, u_short *src, int len) |
| 129 | { |
| 130 | while (len >= 2) { |
| 131 | *(dest++) = *(src++); |
| 132 | len -= 2; |
| 133 | } |
| 134 | if (len == 1) |
| 135 | *dest = (*(u_char *)src)<<8; |
| 136 | } |
| 137 | |
| 138 | |
| 139 | static int __devinit ariadne_init_one(struct zorro_dev *z, |
| 140 | const struct zorro_device_id *ent); |
| 141 | static void __devexit ariadne_remove_one(struct zorro_dev *z); |
| 142 | |
| 143 | |
| 144 | static struct zorro_device_id ariadne_zorro_tbl[] __devinitdata = { |
| 145 | { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE }, |
| 146 | { 0 } |
| 147 | }; |
Geert Uytterhoeven | bf54a2b | 2008-11-18 21:13:53 +0100 | [diff] [blame] | 148 | MODULE_DEVICE_TABLE(zorro, ariadne_zorro_tbl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
| 150 | static struct zorro_driver ariadne_driver = { |
| 151 | .name = "ariadne", |
| 152 | .id_table = ariadne_zorro_tbl, |
| 153 | .probe = ariadne_init_one, |
| 154 | .remove = __devexit_p(ariadne_remove_one), |
| 155 | }; |
| 156 | |
Alexander Beregalov | f97b1f2 | 2009-04-10 07:59:24 +0000 | [diff] [blame] | 157 | static const struct net_device_ops ariadne_netdev_ops = { |
| 158 | .ndo_open = ariadne_open, |
| 159 | .ndo_stop = ariadne_close, |
| 160 | .ndo_start_xmit = ariadne_start_xmit, |
| 161 | .ndo_tx_timeout = ariadne_tx_timeout, |
| 162 | .ndo_get_stats = ariadne_get_stats, |
| 163 | .ndo_set_multicast_list = set_multicast_list, |
| 164 | .ndo_validate_addr = eth_validate_addr, |
| 165 | .ndo_change_mtu = eth_change_mtu, |
| 166 | .ndo_set_mac_address = eth_mac_addr, |
| 167 | }; |
| 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | static int __devinit ariadne_init_one(struct zorro_dev *z, |
| 170 | const struct zorro_device_id *ent) |
| 171 | { |
| 172 | unsigned long board = z->resource.start; |
| 173 | unsigned long base_addr = board+ARIADNE_LANCE; |
| 174 | unsigned long mem_start = board+ARIADNE_RAM; |
| 175 | struct resource *r1, *r2; |
| 176 | struct net_device *dev; |
| 177 | struct ariadne_private *priv; |
| 178 | int err; |
| 179 | |
| 180 | r1 = request_mem_region(base_addr, sizeof(struct Am79C960), "Am79C960"); |
| 181 | if (!r1) |
| 182 | return -EBUSY; |
| 183 | r2 = request_mem_region(mem_start, ARIADNE_RAM_SIZE, "RAM"); |
| 184 | if (!r2) { |
| 185 | release_resource(r1); |
| 186 | return -EBUSY; |
| 187 | } |
| 188 | |
| 189 | dev = alloc_etherdev(sizeof(struct ariadne_private)); |
| 190 | if (dev == NULL) { |
| 191 | release_resource(r1); |
| 192 | release_resource(r2); |
| 193 | return -ENOMEM; |
| 194 | } |
| 195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | priv = netdev_priv(dev); |
| 197 | |
| 198 | r1->name = dev->name; |
| 199 | r2->name = dev->name; |
| 200 | |
| 201 | dev->dev_addr[0] = 0x00; |
| 202 | dev->dev_addr[1] = 0x60; |
| 203 | dev->dev_addr[2] = 0x30; |
| 204 | dev->dev_addr[3] = (z->rom.er_SerialNumber>>16) & 0xff; |
| 205 | dev->dev_addr[4] = (z->rom.er_SerialNumber>>8) & 0xff; |
| 206 | dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff; |
| 207 | dev->base_addr = ZTWO_VADDR(base_addr); |
| 208 | dev->mem_start = ZTWO_VADDR(mem_start); |
| 209 | dev->mem_end = dev->mem_start+ARIADNE_RAM_SIZE; |
| 210 | |
Alexander Beregalov | f97b1f2 | 2009-04-10 07:59:24 +0000 | [diff] [blame] | 211 | dev->netdev_ops = &ariadne_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | dev->watchdog_timeo = 5*HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
| 214 | err = register_netdev(dev); |
| 215 | if (err) { |
| 216 | release_resource(r1); |
| 217 | release_resource(r2); |
| 218 | free_netdev(dev); |
| 219 | return err; |
| 220 | } |
| 221 | zorro_set_drvdata(z, dev); |
| 222 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 223 | printk(KERN_INFO "%s: Ariadne at 0x%08lx, Ethernet Address %pM\n", |
| 224 | dev->name, board, dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | |
| 230 | static int ariadne_open(struct net_device *dev) |
| 231 | { |
| 232 | volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr; |
| 233 | u_short in; |
| 234 | u_long version; |
| 235 | int i; |
| 236 | |
| 237 | /* Reset the LANCE */ |
| 238 | in = lance->Reset; |
| 239 | |
| 240 | /* Stop the LANCE */ |
| 241 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 242 | lance->RDP = STOP; |
| 243 | |
| 244 | /* Check the LANCE version */ |
| 245 | lance->RAP = CSR88; /* Chip ID */ |
| 246 | version = swapw(lance->RDP); |
| 247 | lance->RAP = CSR89; /* Chip ID */ |
| 248 | version |= swapw(lance->RDP)<<16; |
| 249 | if ((version & 0x00000fff) != 0x00000003) { |
| 250 | printk(KERN_WARNING "ariadne_open: Couldn't find AMD Ethernet Chip\n"); |
| 251 | return -EAGAIN; |
| 252 | } |
| 253 | if ((version & 0x0ffff000) != 0x00003000) { |
| 254 | printk(KERN_WARNING "ariadne_open: Couldn't find Am79C960 (Wrong part " |
| 255 | "number = %ld)\n", (version & 0x0ffff000)>>12); |
| 256 | return -EAGAIN; |
| 257 | } |
| 258 | #if 0 |
| 259 | printk(KERN_DEBUG "ariadne_open: Am79C960 (PCnet-ISA) Revision %ld\n", |
| 260 | (version & 0xf0000000)>>28); |
| 261 | #endif |
| 262 | |
| 263 | ariadne_init_ring(dev); |
| 264 | |
| 265 | /* Miscellaneous Stuff */ |
| 266 | lance->RAP = CSR3; /* Interrupt Masks and Deferral Control */ |
| 267 | lance->RDP = 0x0000; |
| 268 | lance->RAP = CSR4; /* Test and Features Control */ |
| 269 | lance->RDP = DPOLL|APAD_XMT|MFCOM|RCVCCOM|TXSTRTM|JABM; |
| 270 | |
| 271 | /* Set the Multicast Table */ |
| 272 | lance->RAP = CSR8; /* Logical Address Filter, LADRF[15:0] */ |
| 273 | lance->RDP = 0x0000; |
| 274 | lance->RAP = CSR9; /* Logical Address Filter, LADRF[31:16] */ |
| 275 | lance->RDP = 0x0000; |
| 276 | lance->RAP = CSR10; /* Logical Address Filter, LADRF[47:32] */ |
| 277 | lance->RDP = 0x0000; |
| 278 | lance->RAP = CSR11; /* Logical Address Filter, LADRF[63:48] */ |
| 279 | lance->RDP = 0x0000; |
| 280 | |
| 281 | /* Set the Ethernet Hardware Address */ |
| 282 | lance->RAP = CSR12; /* Physical Address Register, PADR[15:0] */ |
| 283 | lance->RDP = ((u_short *)&dev->dev_addr[0])[0]; |
| 284 | lance->RAP = CSR13; /* Physical Address Register, PADR[31:16] */ |
| 285 | lance->RDP = ((u_short *)&dev->dev_addr[0])[1]; |
| 286 | lance->RAP = CSR14; /* Physical Address Register, PADR[47:32] */ |
| 287 | lance->RDP = ((u_short *)&dev->dev_addr[0])[2]; |
| 288 | |
| 289 | /* Set the Init Block Mode */ |
| 290 | lance->RAP = CSR15; /* Mode Register */ |
| 291 | lance->RDP = 0x0000; |
| 292 | |
| 293 | /* Set the Transmit Descriptor Ring Pointer */ |
| 294 | lance->RAP = CSR30; /* Base Address of Transmit Ring */ |
| 295 | lance->RDP = swloww(ARIADNE_RAM+offsetof(struct lancedata, tx_ring)); |
| 296 | lance->RAP = CSR31; /* Base Address of transmit Ring */ |
| 297 | lance->RDP = swhighw(ARIADNE_RAM+offsetof(struct lancedata, tx_ring)); |
| 298 | |
| 299 | /* Set the Receive Descriptor Ring Pointer */ |
| 300 | lance->RAP = CSR24; /* Base Address of Receive Ring */ |
| 301 | lance->RDP = swloww(ARIADNE_RAM+offsetof(struct lancedata, rx_ring)); |
| 302 | lance->RAP = CSR25; /* Base Address of Receive Ring */ |
| 303 | lance->RDP = swhighw(ARIADNE_RAM+offsetof(struct lancedata, rx_ring)); |
| 304 | |
| 305 | /* Set the Number of RX and TX Ring Entries */ |
| 306 | lance->RAP = CSR76; /* Receive Ring Length */ |
| 307 | lance->RDP = swapw(((u_short)-RX_RING_SIZE)); |
| 308 | lance->RAP = CSR78; /* Transmit Ring Length */ |
| 309 | lance->RDP = swapw(((u_short)-TX_RING_SIZE)); |
| 310 | |
| 311 | /* Enable Media Interface Port Auto Select (10BASE-2/10BASE-T) */ |
| 312 | lance->RAP = ISACSR2; /* Miscellaneous Configuration */ |
| 313 | lance->IDP = ASEL; |
| 314 | |
| 315 | /* LED Control */ |
| 316 | lance->RAP = ISACSR5; /* LED1 Status */ |
| 317 | lance->IDP = PSE|XMTE; |
| 318 | lance->RAP = ISACSR6; /* LED2 Status */ |
| 319 | lance->IDP = PSE|COLE; |
| 320 | lance->RAP = ISACSR7; /* LED3 Status */ |
| 321 | lance->IDP = PSE|RCVE; |
| 322 | |
| 323 | netif_start_queue(dev); |
| 324 | |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 325 | i = request_irq(IRQ_AMIGA_PORTS, ariadne_interrupt, IRQF_SHARED, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | dev->name, dev); |
| 327 | if (i) return i; |
| 328 | |
| 329 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 330 | lance->RDP = INEA|STRT; |
| 331 | |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | |
| 336 | static void ariadne_init_ring(struct net_device *dev) |
| 337 | { |
| 338 | struct ariadne_private *priv = netdev_priv(dev); |
| 339 | volatile struct lancedata *lancedata = (struct lancedata *)dev->mem_start; |
| 340 | int i; |
| 341 | |
| 342 | netif_stop_queue(dev); |
| 343 | |
| 344 | priv->tx_full = 0; |
| 345 | priv->cur_rx = priv->cur_tx = 0; |
| 346 | priv->dirty_tx = 0; |
| 347 | |
| 348 | /* Set up TX Ring */ |
| 349 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 350 | volatile struct TDRE *t = &lancedata->tx_ring[i]; |
| 351 | t->TMD0 = swloww(ARIADNE_RAM+offsetof(struct lancedata, tx_buff[i])); |
| 352 | t->TMD1 = swhighw(ARIADNE_RAM+offsetof(struct lancedata, tx_buff[i])) | |
| 353 | TF_STP | TF_ENP; |
| 354 | t->TMD2 = swapw((u_short)-PKT_BUF_SIZE); |
| 355 | t->TMD3 = 0; |
| 356 | priv->tx_ring[i] = &lancedata->tx_ring[i]; |
| 357 | priv->tx_buff[i] = lancedata->tx_buff[i]; |
| 358 | #if 0 |
| 359 | printk(KERN_DEBUG "TX Entry %2d at %p, Buf at %p\n", i, |
| 360 | &lancedata->tx_ring[i], lancedata->tx_buff[i]); |
| 361 | #endif |
| 362 | } |
| 363 | |
| 364 | /* Set up RX Ring */ |
| 365 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 366 | volatile struct RDRE *r = &lancedata->rx_ring[i]; |
| 367 | r->RMD0 = swloww(ARIADNE_RAM+offsetof(struct lancedata, rx_buff[i])); |
| 368 | r->RMD1 = swhighw(ARIADNE_RAM+offsetof(struct lancedata, rx_buff[i])) | |
| 369 | RF_OWN; |
| 370 | r->RMD2 = swapw((u_short)-PKT_BUF_SIZE); |
| 371 | r->RMD3 = 0x0000; |
| 372 | priv->rx_ring[i] = &lancedata->rx_ring[i]; |
| 373 | priv->rx_buff[i] = lancedata->rx_buff[i]; |
| 374 | #if 0 |
| 375 | printk(KERN_DEBUG "RX Entry %2d at %p, Buf at %p\n", i, |
| 376 | &lancedata->rx_ring[i], lancedata->rx_buff[i]); |
| 377 | #endif |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | |
| 382 | static int ariadne_close(struct net_device *dev) |
| 383 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr; |
| 385 | |
| 386 | netif_stop_queue(dev); |
| 387 | |
| 388 | lance->RAP = CSR112; /* Missed Frame Count */ |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 389 | dev->stats.rx_missed_errors = swapw(lance->RDP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 391 | |
| 392 | if (ariadne_debug > 1) { |
| 393 | printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n", |
| 394 | dev->name, lance->RDP); |
| 395 | printk(KERN_DEBUG "%s: %lu packets missed\n", dev->name, |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 396 | dev->stats.rx_missed_errors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | /* We stop the LANCE here -- it occasionally polls memory if we don't. */ |
| 400 | lance->RDP = STOP; |
| 401 | |
| 402 | free_irq(IRQ_AMIGA_PORTS, dev); |
| 403 | |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | |
| 408 | static inline void ariadne_reset(struct net_device *dev) |
| 409 | { |
| 410 | volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr; |
| 411 | |
| 412 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 413 | lance->RDP = STOP; |
| 414 | ariadne_init_ring(dev); |
| 415 | lance->RDP = INEA|STRT; |
| 416 | netif_start_queue(dev); |
| 417 | } |
| 418 | |
| 419 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 420 | static irqreturn_t ariadne_interrupt(int irq, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | { |
| 422 | struct net_device *dev = (struct net_device *)data; |
| 423 | volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr; |
| 424 | struct ariadne_private *priv; |
| 425 | int csr0, boguscnt; |
| 426 | int handled = 0; |
| 427 | |
| 428 | if (dev == NULL) { |
| 429 | printk(KERN_WARNING "ariadne_interrupt(): irq for unknown device.\n"); |
| 430 | return IRQ_NONE; |
| 431 | } |
| 432 | |
| 433 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 434 | |
| 435 | if (!(lance->RDP & INTR)) /* Check if any interrupt has been */ |
| 436 | return IRQ_NONE; /* generated by the board. */ |
| 437 | |
| 438 | priv = netdev_priv(dev); |
| 439 | |
| 440 | boguscnt = 10; |
| 441 | while ((csr0 = lance->RDP) & (ERR|RINT|TINT) && --boguscnt >= 0) { |
| 442 | /* Acknowledge all of the current interrupt sources ASAP. */ |
| 443 | lance->RDP = csr0 & ~(INEA|TDMD|STOP|STRT|INIT); |
| 444 | |
| 445 | #if 0 |
| 446 | if (ariadne_debug > 5) { |
| 447 | printk(KERN_DEBUG "%s: interrupt csr0=%#2.2x new csr=%#2.2x.", |
| 448 | dev->name, csr0, lance->RDP); |
| 449 | printk("["); |
| 450 | if (csr0 & INTR) |
| 451 | printk(" INTR"); |
| 452 | if (csr0 & INEA) |
| 453 | printk(" INEA"); |
| 454 | if (csr0 & RXON) |
| 455 | printk(" RXON"); |
| 456 | if (csr0 & TXON) |
| 457 | printk(" TXON"); |
| 458 | if (csr0 & TDMD) |
| 459 | printk(" TDMD"); |
| 460 | if (csr0 & STOP) |
| 461 | printk(" STOP"); |
| 462 | if (csr0 & STRT) |
| 463 | printk(" STRT"); |
| 464 | if (csr0 & INIT) |
| 465 | printk(" INIT"); |
| 466 | if (csr0 & ERR) |
| 467 | printk(" ERR"); |
| 468 | if (csr0 & BABL) |
| 469 | printk(" BABL"); |
| 470 | if (csr0 & CERR) |
| 471 | printk(" CERR"); |
| 472 | if (csr0 & MISS) |
| 473 | printk(" MISS"); |
| 474 | if (csr0 & MERR) |
| 475 | printk(" MERR"); |
| 476 | if (csr0 & RINT) |
| 477 | printk(" RINT"); |
| 478 | if (csr0 & TINT) |
| 479 | printk(" TINT"); |
| 480 | if (csr0 & IDON) |
| 481 | printk(" IDON"); |
| 482 | printk(" ]\n"); |
| 483 | } |
| 484 | #endif |
| 485 | |
| 486 | if (csr0 & RINT) { /* Rx interrupt */ |
| 487 | handled = 1; |
| 488 | ariadne_rx(dev); |
| 489 | } |
| 490 | |
| 491 | if (csr0 & TINT) { /* Tx-done interrupt */ |
| 492 | int dirty_tx = priv->dirty_tx; |
| 493 | |
| 494 | handled = 1; |
| 495 | while (dirty_tx < priv->cur_tx) { |
| 496 | int entry = dirty_tx % TX_RING_SIZE; |
| 497 | int status = lowb(priv->tx_ring[entry]->TMD1); |
| 498 | |
| 499 | if (status & TF_OWN) |
| 500 | break; /* It still hasn't been Txed */ |
| 501 | |
| 502 | priv->tx_ring[entry]->TMD1 &= 0xff00; |
| 503 | |
| 504 | if (status & TF_ERR) { |
| 505 | /* There was an major error, log it. */ |
| 506 | int err_status = priv->tx_ring[entry]->TMD3; |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 507 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | if (err_status & EF_RTRY) |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 509 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | if (err_status & EF_LCAR) |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 511 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | if (err_status & EF_LCOL) |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 513 | dev->stats.tx_window_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | if (err_status & EF_UFLO) { |
| 515 | /* Ackk! On FIFO errors the Tx unit is turned off! */ |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 516 | dev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | /* Remove this verbosity later! */ |
| 518 | printk(KERN_ERR "%s: Tx FIFO error! Status %4.4x.\n", |
| 519 | dev->name, csr0); |
| 520 | /* Restart the chip. */ |
| 521 | lance->RDP = STRT; |
| 522 | } |
| 523 | } else { |
| 524 | if (status & (TF_MORE|TF_ONE)) |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 525 | dev->stats.collisions++; |
| 526 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } |
| 528 | dirty_tx++; |
| 529 | } |
| 530 | |
| 531 | #ifndef final_version |
| 532 | if (priv->cur_tx - dirty_tx >= TX_RING_SIZE) { |
| 533 | printk(KERN_ERR "out-of-sync dirty pointer, %d vs. %d, " |
| 534 | "full=%d.\n", dirty_tx, priv->cur_tx, priv->tx_full); |
| 535 | dirty_tx += TX_RING_SIZE; |
| 536 | } |
| 537 | #endif |
| 538 | |
| 539 | if (priv->tx_full && netif_queue_stopped(dev) && |
| 540 | dirty_tx > priv->cur_tx - TX_RING_SIZE + 2) { |
| 541 | /* The ring is no longer full. */ |
| 542 | priv->tx_full = 0; |
| 543 | netif_wake_queue(dev); |
| 544 | } |
| 545 | |
| 546 | priv->dirty_tx = dirty_tx; |
| 547 | } |
| 548 | |
| 549 | /* Log misc errors. */ |
| 550 | if (csr0 & BABL) { |
| 551 | handled = 1; |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 552 | dev->stats.tx_errors++; /* Tx babble. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | } |
| 554 | if (csr0 & MISS) { |
| 555 | handled = 1; |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 556 | dev->stats.rx_errors++; /* Missed a Rx frame. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | } |
| 558 | if (csr0 & MERR) { |
| 559 | handled = 1; |
| 560 | printk(KERN_ERR "%s: Bus master arbitration failure, status " |
| 561 | "%4.4x.\n", dev->name, csr0); |
| 562 | /* Restart the chip. */ |
| 563 | lance->RDP = STRT; |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | /* Clear any other interrupt, and set interrupt enable. */ |
| 568 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 569 | lance->RDP = INEA|BABL|CERR|MISS|MERR|IDON; |
| 570 | |
| 571 | #if 0 |
| 572 | if (ariadne_debug > 4) |
| 573 | printk(KERN_DEBUG "%s: exiting interrupt, csr%d=%#4.4x.\n", dev->name, |
| 574 | lance->RAP, lance->RDP); |
| 575 | #endif |
| 576 | return IRQ_RETVAL(handled); |
| 577 | } |
| 578 | |
| 579 | |
| 580 | static void ariadne_tx_timeout(struct net_device *dev) |
| 581 | { |
| 582 | volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr; |
| 583 | |
| 584 | printk(KERN_ERR "%s: transmit timed out, status %4.4x, resetting.\n", |
| 585 | dev->name, lance->RDP); |
| 586 | ariadne_reset(dev); |
| 587 | netif_wake_queue(dev); |
| 588 | } |
| 589 | |
| 590 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 591 | static netdev_tx_t ariadne_start_xmit(struct sk_buff *skb, |
| 592 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | { |
| 594 | struct ariadne_private *priv = netdev_priv(dev); |
| 595 | volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr; |
| 596 | int entry; |
| 597 | unsigned long flags; |
| 598 | int len = skb->len; |
| 599 | |
| 600 | #if 0 |
| 601 | if (ariadne_debug > 3) { |
| 602 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 603 | printk(KERN_DEBUG "%s: ariadne_start_xmit() called, csr0 %4.4x.\n", |
| 604 | dev->name, lance->RDP); |
| 605 | lance->RDP = 0x0000; |
| 606 | } |
| 607 | #endif |
| 608 | |
| 609 | /* FIXME: is the 79C960 new enough to do its own padding right ? */ |
| 610 | if (skb->len < ETH_ZLEN) |
| 611 | { |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 612 | if (skb_padto(skb, ETH_ZLEN)) |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 613 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | len = ETH_ZLEN; |
| 615 | } |
| 616 | |
| 617 | /* Fill in a Tx ring entry */ |
| 618 | |
| 619 | #if 0 |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 620 | { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 621 | printk(KERN_DEBUG "TX pkt type 0x%04x from %pM to %pM " |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 622 | " data 0x%08x len %d\n", |
| 623 | ((u_short *)skb->data)[6], |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 624 | skb->data + 6, skb->data, |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 625 | (int)skb->data, (int)skb->len); |
| 626 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | #endif |
| 628 | |
| 629 | local_irq_save(flags); |
| 630 | |
| 631 | entry = priv->cur_tx % TX_RING_SIZE; |
| 632 | |
| 633 | /* Caution: the write order is important here, set the base address with |
| 634 | the "ownership" bits last. */ |
| 635 | |
| 636 | priv->tx_ring[entry]->TMD2 = swapw((u_short)-skb->len); |
| 637 | priv->tx_ring[entry]->TMD3 = 0x0000; |
| 638 | memcpyw(priv->tx_buff[entry], (u_short *)skb->data, len); |
| 639 | |
| 640 | #if 0 |
| 641 | { |
| 642 | int i, len; |
| 643 | |
| 644 | len = skb->len > 64 ? 64 : skb->len; |
| 645 | len >>= 1; |
| 646 | for (i = 0; i < len; i += 8) { |
| 647 | int j; |
| 648 | printk(KERN_DEBUG "%04x:", i); |
| 649 | for (j = 0; (j < 8) && ((i+j) < len); j++) { |
| 650 | if (!(j & 1)) |
| 651 | printk(" "); |
| 652 | printk("%04x", priv->tx_buff[entry][i+j]); |
| 653 | } |
| 654 | printk("\n"); |
| 655 | } |
| 656 | } |
| 657 | #endif |
| 658 | |
| 659 | priv->tx_ring[entry]->TMD1 = (priv->tx_ring[entry]->TMD1&0xff00)|TF_OWN|TF_STP|TF_ENP; |
| 660 | |
| 661 | dev_kfree_skb(skb); |
| 662 | |
| 663 | priv->cur_tx++; |
| 664 | if ((priv->cur_tx >= TX_RING_SIZE) && (priv->dirty_tx >= TX_RING_SIZE)) { |
| 665 | |
| 666 | #if 0 |
| 667 | printk(KERN_DEBUG "*** Subtracting TX_RING_SIZE from cur_tx (%d) and " |
| 668 | "dirty_tx (%d)\n", priv->cur_tx, priv->dirty_tx); |
| 669 | #endif |
| 670 | |
| 671 | priv->cur_tx -= TX_RING_SIZE; |
| 672 | priv->dirty_tx -= TX_RING_SIZE; |
| 673 | } |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 674 | dev->stats.tx_bytes += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
| 676 | /* Trigger an immediate send poll. */ |
| 677 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 678 | lance->RDP = INEA|TDMD; |
| 679 | |
| 680 | dev->trans_start = jiffies; |
| 681 | |
| 682 | if (lowb(priv->tx_ring[(entry+1) % TX_RING_SIZE]->TMD1) != 0) { |
| 683 | netif_stop_queue(dev); |
| 684 | priv->tx_full = 1; |
| 685 | } |
| 686 | local_irq_restore(flags); |
| 687 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 688 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | } |
| 690 | |
| 691 | |
| 692 | static int ariadne_rx(struct net_device *dev) |
| 693 | { |
| 694 | struct ariadne_private *priv = netdev_priv(dev); |
| 695 | int entry = priv->cur_rx % RX_RING_SIZE; |
| 696 | int i; |
| 697 | |
| 698 | /* If we own the next entry, it's a new packet. Send it up. */ |
| 699 | while (!(lowb(priv->rx_ring[entry]->RMD1) & RF_OWN)) { |
| 700 | int status = lowb(priv->rx_ring[entry]->RMD1); |
| 701 | |
| 702 | if (status != (RF_STP|RF_ENP)) { /* There was an error. */ |
| 703 | /* There is a tricky error noted by John Murphy, |
| 704 | <murf@perftech.com> to Russ Nelson: Even with full-sized |
| 705 | buffers it's possible for a jabber packet to use two |
| 706 | buffers, with only the last correctly noting the error. */ |
| 707 | if (status & RF_ENP) |
| 708 | /* Only count a general error at the end of a packet.*/ |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 709 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | if (status & RF_FRAM) |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 711 | dev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | if (status & RF_OFLO) |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 713 | dev->stats.rx_over_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | if (status & RF_CRC) |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 715 | dev->stats.rx_crc_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | if (status & RF_BUFF) |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 717 | dev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | priv->rx_ring[entry]->RMD1 &= 0xff00|RF_STP|RF_ENP; |
| 719 | } else { |
| 720 | /* Malloc up new buffer, compatible with net-3. */ |
| 721 | short pkt_len = swapw(priv->rx_ring[entry]->RMD3); |
| 722 | struct sk_buff *skb; |
| 723 | |
| 724 | skb = dev_alloc_skb(pkt_len+2); |
| 725 | if (skb == NULL) { |
| 726 | printk(KERN_WARNING "%s: Memory squeeze, deferring packet.\n", |
| 727 | dev->name); |
| 728 | for (i = 0; i < RX_RING_SIZE; i++) |
| 729 | if (lowb(priv->rx_ring[(entry+i) % RX_RING_SIZE]->RMD1) & RF_OWN) |
| 730 | break; |
| 731 | |
| 732 | if (i > RX_RING_SIZE-2) { |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 733 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | priv->rx_ring[entry]->RMD1 |= RF_OWN; |
| 735 | priv->cur_rx++; |
| 736 | } |
| 737 | break; |
| 738 | } |
| 739 | |
| 740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | skb_reserve(skb,2); /* 16 byte align */ |
| 742 | skb_put(skb,pkt_len); /* Make room */ |
David S. Miller | 8c7b7fa | 2007-07-10 22:08:12 -0700 | [diff] [blame] | 743 | skb_copy_to_linear_data(skb, (char *)priv->rx_buff[entry], pkt_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | skb->protocol=eth_type_trans(skb,dev); |
| 745 | #if 0 |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 746 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | printk(KERN_DEBUG "RX pkt type 0x%04x from ", |
| 748 | ((u_short *)skb->data)[6]); |
| 749 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | u_char *ptr = &((u_char *)skb->data)[6]; |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 751 | printk("%pM", ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | printk(" to "); |
| 754 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | u_char *ptr = (u_char *)skb->data; |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 756 | printk("%pM", ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | } |
| 758 | printk(" data 0x%08x len %d\n", (int)skb->data, (int)skb->len); |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 759 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | #endif |
| 761 | |
| 762 | netif_rx(skb); |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 763 | dev->stats.rx_packets++; |
| 764 | dev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | } |
| 766 | |
| 767 | priv->rx_ring[entry]->RMD1 |= RF_OWN; |
| 768 | entry = (++priv->cur_rx) % RX_RING_SIZE; |
| 769 | } |
| 770 | |
| 771 | priv->cur_rx = priv->cur_rx % RX_RING_SIZE; |
| 772 | |
| 773 | /* We should check that at least two ring entries are free. If not, |
| 774 | we should free one and mark stats->rx_dropped++. */ |
| 775 | |
| 776 | return 0; |
| 777 | } |
| 778 | |
| 779 | |
| 780 | static struct net_device_stats *ariadne_get_stats(struct net_device *dev) |
| 781 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr; |
| 783 | short saved_addr; |
| 784 | unsigned long flags; |
| 785 | |
| 786 | local_irq_save(flags); |
| 787 | saved_addr = lance->RAP; |
| 788 | lance->RAP = CSR112; /* Missed Frame Count */ |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 789 | dev->stats.rx_missed_errors = swapw(lance->RDP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | lance->RAP = saved_addr; |
| 791 | local_irq_restore(flags); |
| 792 | |
Paulius Zaleckas | 038eddd | 2008-07-17 21:16:09 +0200 | [diff] [blame] | 793 | return &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | } |
| 795 | |
| 796 | |
| 797 | /* Set or clear the multicast filter for this adaptor. |
| 798 | num_addrs == -1 Promiscuous mode, receive all packets |
| 799 | num_addrs == 0 Normal mode, clear multicast list |
| 800 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do |
| 801 | best-effort filtering. |
| 802 | */ |
| 803 | static void set_multicast_list(struct net_device *dev) |
| 804 | { |
| 805 | volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr; |
| 806 | |
| 807 | if (!netif_running(dev)) |
| 808 | return; |
| 809 | |
| 810 | netif_stop_queue(dev); |
| 811 | |
| 812 | /* We take the simple way out and always enable promiscuous mode. */ |
| 813 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 814 | lance->RDP = STOP; /* Temporarily stop the lance. */ |
| 815 | ariadne_init_ring(dev); |
| 816 | |
| 817 | if (dev->flags & IFF_PROMISC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | lance->RAP = CSR15; /* Mode Register */ |
| 819 | lance->RDP = PROM; /* Set promiscuous mode */ |
| 820 | } else { |
| 821 | short multicast_table[4]; |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 822 | int num_addrs = netdev_mc_count(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | int i; |
| 824 | /* We don't use the multicast table, but rely on upper-layer filtering. */ |
| 825 | memset(multicast_table, (num_addrs == 0) ? 0 : -1, |
| 826 | sizeof(multicast_table)); |
| 827 | for (i = 0; i < 4; i++) { |
| 828 | lance->RAP = CSR8+(i<<8); /* Logical Address Filter */ |
| 829 | lance->RDP = swapw(multicast_table[i]); |
| 830 | } |
| 831 | lance->RAP = CSR15; /* Mode Register */ |
| 832 | lance->RDP = 0x0000; /* Unset promiscuous mode */ |
| 833 | } |
| 834 | |
| 835 | lance->RAP = CSR0; /* PCnet-ISA Controller Status */ |
| 836 | lance->RDP = INEA|STRT|IDON; /* Resume normal operation. */ |
| 837 | |
| 838 | netif_wake_queue(dev); |
| 839 | } |
| 840 | |
| 841 | |
| 842 | static void __devexit ariadne_remove_one(struct zorro_dev *z) |
| 843 | { |
| 844 | struct net_device *dev = zorro_get_drvdata(z); |
| 845 | |
| 846 | unregister_netdev(dev); |
| 847 | release_mem_region(ZTWO_PADDR(dev->base_addr), sizeof(struct Am79C960)); |
| 848 | release_mem_region(ZTWO_PADDR(dev->mem_start), ARIADNE_RAM_SIZE); |
| 849 | free_netdev(dev); |
| 850 | } |
| 851 | |
| 852 | static int __init ariadne_init_module(void) |
| 853 | { |
Bjorn Helgaas | 33d8675 | 2006-03-25 03:07:20 -0800 | [diff] [blame] | 854 | return zorro_register_driver(&ariadne_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | } |
| 856 | |
| 857 | static void __exit ariadne_cleanup_module(void) |
| 858 | { |
| 859 | zorro_unregister_driver(&ariadne_driver); |
| 860 | } |
| 861 | |
| 862 | module_init(ariadne_init_module); |
| 863 | module_exit(ariadne_cleanup_module); |
| 864 | |
| 865 | MODULE_LICENSE("GPL"); |