Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* 3c574.c: A PCMCIA ethernet driver for the 3com 3c574 "RoadRunner". |
| 2 | |
| 3 | Written 1993-1998 by |
| 4 | Donald Becker, becker@scyld.com, (driver core) and |
| 5 | David Hinds, dahinds@users.sourceforge.net (from his PC card code). |
| 6 | Locking fixes (C) Copyright 2003 Red Hat Inc |
| 7 | |
| 8 | This software may be used and distributed according to the terms of |
| 9 | the GNU General Public License, incorporated herein by reference. |
| 10 | |
| 11 | This driver derives from Donald Becker's 3c509 core, which has the |
| 12 | following copyright: |
| 13 | Copyright 1993 United States Government as represented by the |
| 14 | Director, National Security Agency. |
| 15 | |
| 16 | |
| 17 | */ |
| 18 | |
| 19 | /* |
| 20 | Theory of Operation |
| 21 | |
| 22 | I. Board Compatibility |
| 23 | |
| 24 | This device driver is designed for the 3Com 3c574 PC card Fast Ethernet |
| 25 | Adapter. |
| 26 | |
| 27 | II. Board-specific settings |
| 28 | |
| 29 | None -- PC cards are autoconfigured. |
| 30 | |
| 31 | III. Driver operation |
| 32 | |
| 33 | The 3c574 uses a Boomerang-style interface, without the bus-master capability. |
| 34 | See the Boomerang driver and documentation for most details. |
| 35 | |
| 36 | IV. Notes and chip documentation. |
| 37 | |
| 38 | Two added registers are used to enhance PIO performance, RunnerRdCtrl and |
| 39 | RunnerWrCtrl. These are 11 bit down-counters that are preloaded with the |
| 40 | count of word (16 bits) reads or writes the driver is about to do to the Rx |
| 41 | or Tx FIFO. The chip is then able to hide the internal-PCI-bus to PC-card |
| 42 | translation latency by buffering the I/O operations with an 8 word FIFO. |
| 43 | Note: No other chip accesses are permitted when this buffer is used. |
| 44 | |
| 45 | A second enhancement is that both attribute and common memory space |
| 46 | 0x0800-0x0fff can translated to the PIO FIFO. Thus memory operations (faster |
| 47 | with *some* PCcard bridges) may be used instead of I/O operations. |
| 48 | This is enabled by setting the 0x10 bit in the PCMCIA LAN COR. |
| 49 | |
| 50 | Some slow PC card bridges work better if they never see a WAIT signal. |
| 51 | This is configured by setting the 0x20 bit in the PCMCIA LAN COR. |
| 52 | Only do this after testing that it is reliable and improves performance. |
| 53 | |
| 54 | The upper five bits of RunnerRdCtrl are used to window into PCcard |
| 55 | configuration space registers. Window 0 is the regular Boomerang/Odie |
| 56 | register set, 1-5 are various PC card control registers, and 16-31 are |
| 57 | the (reversed!) CIS table. |
| 58 | |
| 59 | A final note: writing the InternalConfig register in window 3 with an |
| 60 | invalid ramWidth is Very Bad. |
| 61 | |
| 62 | V. References |
| 63 | |
| 64 | http://www.scyld.com/expert/NWay.html |
| 65 | http://www.national.com/pf/DP/DP83840.html |
| 66 | |
| 67 | Thanks to Terry Murphy of 3Com for providing development information for |
| 68 | earlier 3Com products. |
| 69 | |
| 70 | */ |
| 71 | |
| 72 | #include <linux/module.h> |
| 73 | #include <linux/kernel.h> |
| 74 | #include <linux/init.h> |
| 75 | #include <linux/slab.h> |
| 76 | #include <linux/string.h> |
| 77 | #include <linux/timer.h> |
| 78 | #include <linux/interrupt.h> |
| 79 | #include <linux/in.h> |
| 80 | #include <linux/delay.h> |
| 81 | #include <linux/netdevice.h> |
| 82 | #include <linux/etherdevice.h> |
| 83 | #include <linux/skbuff.h> |
| 84 | #include <linux/if_arp.h> |
| 85 | #include <linux/ioport.h> |
| 86 | #include <linux/ethtool.h> |
| 87 | #include <linux/bitops.h> |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | #include <pcmcia/cs_types.h> |
| 90 | #include <pcmcia/cs.h> |
| 91 | #include <pcmcia/cistpl.h> |
| 92 | #include <pcmcia/cisreg.h> |
| 93 | #include <pcmcia/ciscode.h> |
| 94 | #include <pcmcia/ds.h> |
| 95 | #include <pcmcia/mem_op.h> |
| 96 | |
| 97 | #include <asm/uaccess.h> |
| 98 | #include <asm/io.h> |
| 99 | #include <asm/system.h> |
| 100 | |
| 101 | /*====================================================================*/ |
| 102 | |
| 103 | /* Module parameters */ |
| 104 | |
| 105 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); |
| 106 | MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver"); |
| 107 | MODULE_LICENSE("GPL"); |
| 108 | |
| 109 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) |
| 110 | |
| 111 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ |
| 112 | INT_MODULE_PARM(max_interrupt_work, 32); |
| 113 | |
| 114 | /* Force full duplex modes? */ |
| 115 | INT_MODULE_PARM(full_duplex, 0); |
| 116 | |
| 117 | /* Autodetect link polarity reversal? */ |
| 118 | INT_MODULE_PARM(auto_polarity, 1); |
| 119 | |
| 120 | #ifdef PCMCIA_DEBUG |
| 121 | INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); |
| 122 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) |
| 123 | static char *version = |
| 124 | "3c574_cs.c 1.65ac1 2003/04/07 Donald Becker/David Hinds, becker@scyld.com.\n"; |
| 125 | #else |
| 126 | #define DEBUG(n, args...) |
| 127 | #endif |
| 128 | |
| 129 | /*====================================================================*/ |
| 130 | |
| 131 | /* Time in jiffies before concluding the transmitter is hung. */ |
| 132 | #define TX_TIMEOUT ((800*HZ)/1000) |
| 133 | |
| 134 | /* To minimize the size of the driver source and make the driver more |
| 135 | readable not all constants are symbolically defined. |
| 136 | You'll need the manual if you want to understand driver details anyway. */ |
| 137 | /* Offsets from base I/O address. */ |
| 138 | #define EL3_DATA 0x00 |
| 139 | #define EL3_CMD 0x0e |
| 140 | #define EL3_STATUS 0x0e |
| 141 | |
| 142 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) |
| 143 | |
| 144 | /* The top five bits written to EL3_CMD are a command, the lower |
| 145 | 11 bits are the parameter, if applicable. */ |
| 146 | enum el3_cmds { |
| 147 | TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, |
| 148 | RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, |
| 149 | TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, |
| 150 | FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, |
| 151 | SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, |
| 152 | SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, |
| 153 | StatsDisable = 22<<11, StopCoax = 23<<11, |
| 154 | }; |
| 155 | |
| 156 | enum elxl_status { |
| 157 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, |
| 158 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, |
| 159 | IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 }; |
| 160 | |
| 161 | /* The SetRxFilter command accepts the following classes: */ |
| 162 | enum RxFilter { |
| 163 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 |
| 164 | }; |
| 165 | |
| 166 | enum Window0 { |
| 167 | Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */ |
| 168 | IntrStatus=0x0E, /* Valid in all windows. */ |
| 169 | }; |
| 170 | /* These assumes the larger EEPROM. */ |
| 171 | enum Win0_EEPROM_cmds { |
| 172 | EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300, |
| 173 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ |
| 174 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ |
| 175 | }; |
| 176 | |
| 177 | /* Register window 1 offsets, the window used in normal operation. |
| 178 | On the "Odie" this window is always mapped at offsets 0x10-0x1f. |
| 179 | Except for TxFree, which is overlapped by RunnerWrCtrl. */ |
| 180 | enum Window1 { |
| 181 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, |
| 182 | RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B, |
| 183 | TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */ |
| 184 | RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c, |
| 185 | }; |
| 186 | |
| 187 | enum Window3 { /* Window 3: MAC/config bits. */ |
| 188 | Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8, |
| 189 | }; |
| 190 | union wn3_config { |
| 191 | int i; |
| 192 | struct w3_config_fields { |
| 193 | unsigned int ram_size:3, ram_width:1, ram_speed:2, rom_size:2; |
| 194 | int pad8:8; |
| 195 | unsigned int ram_split:2, pad18:2, xcvr:3, pad21:1, autoselect:1; |
| 196 | int pad24:7; |
| 197 | } u; |
| 198 | }; |
| 199 | |
| 200 | enum Window4 { /* Window 4: Xcvr/media bits. */ |
| 201 | Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10, |
| 202 | }; |
| 203 | |
| 204 | #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ |
| 205 | |
| 206 | struct el3_private { |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 207 | struct pcmcia_device *p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | dev_node_t node; |
| 209 | struct net_device_stats stats; |
| 210 | u16 advertising, partner; /* NWay media advertisement */ |
| 211 | unsigned char phys; /* MII device address */ |
| 212 | unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */ |
| 213 | /* for transceiver monitoring */ |
| 214 | struct timer_list media; |
| 215 | unsigned short media_status; |
| 216 | unsigned short fast_poll; |
| 217 | unsigned long last_irq; |
| 218 | spinlock_t window_lock; /* Guards the Window selection */ |
| 219 | }; |
| 220 | |
| 221 | /* Set iff a MII transceiver on any interface requires mdio preamble. |
| 222 | This only set with the original DP83840 on older 3c905 boards, so the extra |
| 223 | code size of a per-interface flag is not worthwhile. */ |
| 224 | static char mii_preamble_required = 0; |
| 225 | |
| 226 | /* Index of functions. */ |
| 227 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 228 | static int tc574_config(struct pcmcia_device *link); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 229 | static void tc574_release(struct pcmcia_device *link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
| 231 | static void mdio_sync(kio_addr_t ioaddr, int bits); |
| 232 | static int mdio_read(kio_addr_t ioaddr, int phy_id, int location); |
| 233 | static void mdio_write(kio_addr_t ioaddr, int phy_id, int location, int value); |
| 234 | static unsigned short read_eeprom(kio_addr_t ioaddr, int index); |
| 235 | static void tc574_wait_for_completion(struct net_device *dev, int cmd); |
| 236 | |
| 237 | static void tc574_reset(struct net_device *dev); |
| 238 | static void media_check(unsigned long arg); |
| 239 | static int el3_open(struct net_device *dev); |
| 240 | static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev); |
| 241 | static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs); |
| 242 | static void update_stats(struct net_device *dev); |
| 243 | static struct net_device_stats *el3_get_stats(struct net_device *dev); |
| 244 | static int el3_rx(struct net_device *dev, int worklimit); |
| 245 | static int el3_close(struct net_device *dev); |
| 246 | static void el3_tx_timeout(struct net_device *dev); |
| 247 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 248 | static struct ethtool_ops netdev_ethtool_ops; |
| 249 | static void set_rx_mode(struct net_device *dev); |
| 250 | |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 251 | static void tc574_detach(struct pcmcia_device *p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | /* |
| 254 | tc574_attach() creates an "instance" of the driver, allocating |
| 255 | local data structures for one device. The device is registered |
| 256 | with Card Services. |
| 257 | */ |
| 258 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 259 | static int tc574_probe(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | { |
| 261 | struct el3_private *lp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | |
| 264 | DEBUG(0, "3c574_attach()\n"); |
| 265 | |
| 266 | /* Create the PC card device object. */ |
| 267 | dev = alloc_etherdev(sizeof(struct el3_private)); |
| 268 | if (!dev) |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 269 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | link->priv = dev; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 272 | lp->p_dev = link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
| 274 | spin_lock_init(&lp->window_lock); |
| 275 | link->io.NumPorts1 = 32; |
| 276 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; |
| 277 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; |
| 278 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; |
| 279 | link->irq.Handler = &el3_interrupt; |
| 280 | link->irq.Instance = dev; |
| 281 | link->conf.Attributes = CONF_ENABLE_IRQ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | link->conf.IntType = INT_MEMORY_AND_IO; |
| 283 | link->conf.ConfigIndex = 1; |
| 284 | link->conf.Present = PRESENT_OPTION; |
| 285 | |
| 286 | /* The EL3-specific entries in the device structure. */ |
| 287 | dev->hard_start_xmit = &el3_start_xmit; |
| 288 | dev->get_stats = &el3_get_stats; |
| 289 | dev->do_ioctl = &el3_ioctl; |
| 290 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
| 291 | dev->set_multicast_list = &set_rx_mode; |
| 292 | dev->open = &el3_open; |
| 293 | dev->stop = &el3_close; |
| 294 | #ifdef HAVE_TX_TIMEOUT |
| 295 | dev->tx_timeout = el3_tx_timeout; |
| 296 | dev->watchdog_timeo = TX_TIMEOUT; |
| 297 | #endif |
| 298 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 299 | return tc574_config(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } /* tc574_attach */ |
| 301 | |
| 302 | /* |
| 303 | |
| 304 | This deletes a driver "instance". The device is de-registered |
| 305 | with Card Services. If it has been released, all local data |
| 306 | structures are freed. Otherwise, the structures will be freed |
| 307 | when the device is released. |
| 308 | |
| 309 | */ |
| 310 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 311 | static void tc574_detach(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | { |
| 313 | struct net_device *dev = link->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
| 315 | DEBUG(0, "3c574_detach(0x%p)\n", link); |
| 316 | |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 317 | if (link->dev_node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | unregister_netdev(dev); |
| 319 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 320 | tc574_release(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | free_netdev(dev); |
| 323 | } /* tc574_detach */ |
| 324 | |
| 325 | /* |
| 326 | tc574_config() is scheduled to run after a CARD_INSERTION event |
| 327 | is received, to configure the PCMCIA socket, and to make the |
| 328 | ethernet device available to the system. |
| 329 | */ |
| 330 | |
| 331 | #define CS_CHECK(fn, ret) \ |
| 332 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) |
| 333 | |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 334 | static const char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 336 | static int tc574_config(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | struct net_device *dev = link->priv; |
| 339 | struct el3_private *lp = netdev_priv(dev); |
| 340 | tuple_t tuple; |
| 341 | cisparse_t parse; |
| 342 | unsigned short buf[32]; |
| 343 | int last_fn, last_ret, i, j; |
| 344 | kio_addr_t ioaddr; |
| 345 | u16 *phys_addr; |
| 346 | char *cardname; |
| 347 | union wn3_config config; |
| 348 | |
| 349 | phys_addr = (u16 *)dev->dev_addr; |
| 350 | |
| 351 | DEBUG(0, "3c574_config(0x%p)\n", link); |
| 352 | |
| 353 | tuple.Attributes = 0; |
| 354 | tuple.DesiredTuple = CISTPL_CONFIG; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 355 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | tuple.TupleData = (cisdata_t *)buf; |
| 357 | tuple.TupleDataMax = 64; |
| 358 | tuple.TupleOffset = 0; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 359 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); |
| 360 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | link->conf.ConfigBase = parse.config.base; |
| 362 | link->conf.Present = parse.config.rmask[0]; |
| 363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | link->io.IOAddrLines = 16; |
| 365 | for (i = j = 0; j < 0x400; j += 0x20) { |
| 366 | link->io.BasePort1 = j ^ 0x300; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 367 | i = pcmcia_request_io(link, &link->io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | if (i == CS_SUCCESS) break; |
| 369 | } |
| 370 | if (i != CS_SUCCESS) { |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 371 | cs_error(link, RequestIO, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | goto failed; |
| 373 | } |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 374 | CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); |
| 375 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
| 377 | dev->irq = link->irq.AssignedIRQ; |
| 378 | dev->base_addr = link->io.BasePort1; |
| 379 | |
| 380 | ioaddr = dev->base_addr; |
| 381 | |
| 382 | /* The 3c574 normally uses an EEPROM for configuration info, including |
| 383 | the hardware address. The future products may include a modem chip |
| 384 | and put the address in the CIS. */ |
| 385 | tuple.DesiredTuple = 0x88; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 386 | if (pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) { |
| 387 | pcmcia_get_tuple_data(link, &tuple); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | for (i = 0; i < 3; i++) |
| 389 | phys_addr[i] = htons(buf[i]); |
| 390 | } else { |
| 391 | EL3WINDOW(0); |
| 392 | for (i = 0; i < 3; i++) |
| 393 | phys_addr[i] = htons(read_eeprom(ioaddr, i + 10)); |
| 394 | if (phys_addr[0] == 0x6060) { |
| 395 | printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx" |
| 396 | "-0x%03lx\n", dev->base_addr, dev->base_addr+15); |
| 397 | goto failed; |
| 398 | } |
| 399 | } |
| 400 | tuple.DesiredTuple = CISTPL_VERS_1; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 401 | if (pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS && |
| 402 | pcmcia_get_tuple_data(link, &tuple) == CS_SUCCESS && |
| 403 | pcmcia_parse_tuple(link, &tuple, &parse) == CS_SUCCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | cardname = parse.version_1.str + parse.version_1.ofs[1]; |
| 405 | } else |
| 406 | cardname = "3Com 3c574"; |
| 407 | |
| 408 | { |
| 409 | u_char mcr; |
| 410 | outw(2<<11, ioaddr + RunnerRdCtrl); |
| 411 | mcr = inb(ioaddr + 2); |
| 412 | outw(0<<11, ioaddr + RunnerRdCtrl); |
| 413 | printk(KERN_INFO " ASIC rev %d,", mcr>>3); |
| 414 | EL3WINDOW(3); |
| 415 | config.i = inl(ioaddr + Wn3_Config); |
| 416 | lp->default_media = config.u.xcvr; |
| 417 | lp->autoselect = config.u.autoselect; |
| 418 | } |
| 419 | |
| 420 | init_timer(&lp->media); |
| 421 | |
| 422 | { |
| 423 | int phy; |
| 424 | |
| 425 | /* Roadrunner only: Turn on the MII transceiver */ |
| 426 | outw(0x8040, ioaddr + Wn3_Options); |
| 427 | mdelay(1); |
| 428 | outw(0xc040, ioaddr + Wn3_Options); |
| 429 | tc574_wait_for_completion(dev, TxReset); |
| 430 | tc574_wait_for_completion(dev, RxReset); |
| 431 | mdelay(1); |
| 432 | outw(0x8040, ioaddr + Wn3_Options); |
| 433 | |
| 434 | EL3WINDOW(4); |
| 435 | for (phy = 1; phy <= 32; phy++) { |
| 436 | int mii_status; |
| 437 | mdio_sync(ioaddr, 32); |
| 438 | mii_status = mdio_read(ioaddr, phy & 0x1f, 1); |
| 439 | if (mii_status != 0xffff) { |
| 440 | lp->phys = phy & 0x1f; |
| 441 | DEBUG(0, " MII transceiver at index %d, status %x.\n", |
| 442 | phy, mii_status); |
| 443 | if ((mii_status & 0x0040) == 0) |
| 444 | mii_preamble_required = 1; |
| 445 | break; |
| 446 | } |
| 447 | } |
| 448 | if (phy > 32) { |
| 449 | printk(KERN_NOTICE " No MII transceivers found!\n"); |
| 450 | goto failed; |
| 451 | } |
| 452 | i = mdio_read(ioaddr, lp->phys, 16) | 0x40; |
| 453 | mdio_write(ioaddr, lp->phys, 16, i); |
| 454 | lp->advertising = mdio_read(ioaddr, lp->phys, 4); |
| 455 | if (full_duplex) { |
| 456 | /* Only advertise the FD media types. */ |
| 457 | lp->advertising &= ~0x02a0; |
| 458 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); |
| 459 | } |
| 460 | } |
| 461 | |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 462 | link->dev_node = &lp->node; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 463 | SET_NETDEV_DEV(dev, &handle_to_dev(link)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
| 465 | if (register_netdev(dev) != 0) { |
| 466 | printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n"); |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 467 | link->dev_node = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | goto failed; |
| 469 | } |
| 470 | |
| 471 | strcpy(lp->node.dev_name, dev->name); |
| 472 | |
| 473 | printk(KERN_INFO "%s: %s at io %#3lx, irq %d, hw_addr ", |
| 474 | dev->name, cardname, dev->base_addr, dev->irq); |
| 475 | for (i = 0; i < 6; i++) |
| 476 | printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : ".\n")); |
| 477 | printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n", |
| 478 | 8 << config.u.ram_size, ram_split[config.u.ram_split], |
| 479 | config.u.autoselect ? "autoselect " : ""); |
| 480 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 481 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | |
| 483 | cs_failed: |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 484 | cs_error(link, last_fn, last_ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | failed: |
| 486 | tc574_release(link); |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 487 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | |
| 489 | } /* tc574_config */ |
| 490 | |
| 491 | /* |
| 492 | After a card is removed, tc574_release() will unregister the net |
| 493 | device, and release the PCMCIA configuration. If the device is |
| 494 | still open, this will be postponed until it is closed. |
| 495 | */ |
| 496 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 497 | static void tc574_release(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | { |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 499 | pcmcia_disable_device(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | } |
| 501 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 502 | static int tc574_suspend(struct pcmcia_device *link) |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 503 | { |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 504 | struct net_device *dev = link->priv; |
| 505 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 506 | if (link->open) |
Dominik Brodowski | 8661bb5 | 2006-03-02 00:02:33 +0100 | [diff] [blame] | 507 | netif_device_detach(dev); |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 508 | |
| 509 | return 0; |
| 510 | } |
| 511 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 512 | static int tc574_resume(struct pcmcia_device *link) |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 513 | { |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 514 | struct net_device *dev = link->priv; |
| 515 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 516 | if (link->open) { |
Dominik Brodowski | 8661bb5 | 2006-03-02 00:02:33 +0100 | [diff] [blame] | 517 | tc574_reset(dev); |
| 518 | netif_device_attach(dev); |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 519 | } |
| 520 | |
| 521 | return 0; |
| 522 | } |
| 523 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | static void dump_status(struct net_device *dev) |
| 525 | { |
| 526 | kio_addr_t ioaddr = dev->base_addr; |
| 527 | EL3WINDOW(1); |
| 528 | printk(KERN_INFO " irq status %04x, rx status %04x, tx status " |
| 529 | "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS), |
| 530 | inw(ioaddr+RxStatus), inb(ioaddr+TxStatus), |
| 531 | inw(ioaddr+TxFree)); |
| 532 | EL3WINDOW(4); |
| 533 | printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x" |
| 534 | " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06), |
| 535 | inw(ioaddr+0x08), inw(ioaddr+0x0a)); |
| 536 | EL3WINDOW(1); |
| 537 | } |
| 538 | |
| 539 | /* |
| 540 | Use this for commands that may take time to finish |
| 541 | */ |
| 542 | static void tc574_wait_for_completion(struct net_device *dev, int cmd) |
| 543 | { |
| 544 | int i = 1500; |
| 545 | outw(cmd, dev->base_addr + EL3_CMD); |
| 546 | while (--i > 0) |
| 547 | if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break; |
| 548 | if (i == 0) |
| 549 | printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd); |
| 550 | } |
| 551 | |
| 552 | /* Read a word from the EEPROM using the regular EEPROM access register. |
| 553 | Assume that we are in register window zero. |
| 554 | */ |
| 555 | static unsigned short read_eeprom(kio_addr_t ioaddr, int index) |
| 556 | { |
| 557 | int timer; |
| 558 | outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd); |
| 559 | /* Pause for at least 162 usec for the read to take place. */ |
| 560 | for (timer = 1620; timer >= 0; timer--) { |
| 561 | if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0) |
| 562 | break; |
| 563 | } |
| 564 | return inw(ioaddr + Wn0EepromData); |
| 565 | } |
| 566 | |
| 567 | /* MII transceiver control section. |
| 568 | Read and write the MII registers using software-generated serial |
| 569 | MDIO protocol. See the MII specifications or DP83840A data sheet |
| 570 | for details. |
| 571 | The maxium data clock rate is 2.5 Mhz. The timing is easily met by the |
| 572 | slow PC card interface. */ |
| 573 | |
| 574 | #define MDIO_SHIFT_CLK 0x01 |
| 575 | #define MDIO_DIR_WRITE 0x04 |
| 576 | #define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE) |
| 577 | #define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE) |
| 578 | #define MDIO_DATA_READ 0x02 |
| 579 | #define MDIO_ENB_IN 0x00 |
| 580 | |
| 581 | /* Generate the preamble required for initial synchronization and |
| 582 | a few older transceivers. */ |
| 583 | static void mdio_sync(kio_addr_t ioaddr, int bits) |
| 584 | { |
| 585 | kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
| 586 | |
| 587 | /* Establish sync by sending at least 32 logic ones. */ |
| 588 | while (-- bits >= 0) { |
| 589 | outw(MDIO_DATA_WRITE1, mdio_addr); |
| 590 | outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr); |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | static int mdio_read(kio_addr_t ioaddr, int phy_id, int location) |
| 595 | { |
| 596 | int i; |
| 597 | int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; |
| 598 | unsigned int retval = 0; |
| 599 | kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
| 600 | |
| 601 | if (mii_preamble_required) |
| 602 | mdio_sync(ioaddr, 32); |
| 603 | |
| 604 | /* Shift the read command bits out. */ |
| 605 | for (i = 14; i >= 0; i--) { |
| 606 | int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
| 607 | outw(dataval, mdio_addr); |
| 608 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); |
| 609 | } |
| 610 | /* Read the two transition, 16 data, and wire-idle bits. */ |
| 611 | for (i = 19; i > 0; i--) { |
| 612 | outw(MDIO_ENB_IN, mdio_addr); |
| 613 | retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0); |
| 614 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); |
| 615 | } |
| 616 | return (retval>>1) & 0xffff; |
| 617 | } |
| 618 | |
| 619 | static void mdio_write(kio_addr_t ioaddr, int phy_id, int location, int value) |
| 620 | { |
| 621 | int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value; |
| 622 | kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
| 623 | int i; |
| 624 | |
| 625 | if (mii_preamble_required) |
| 626 | mdio_sync(ioaddr, 32); |
| 627 | |
| 628 | /* Shift the command bits out. */ |
| 629 | for (i = 31; i >= 0; i--) { |
| 630 | int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
| 631 | outw(dataval, mdio_addr); |
| 632 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); |
| 633 | } |
| 634 | /* Leave the interface idle. */ |
| 635 | for (i = 1; i >= 0; i--) { |
| 636 | outw(MDIO_ENB_IN, mdio_addr); |
| 637 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); |
| 638 | } |
| 639 | |
| 640 | return; |
| 641 | } |
| 642 | |
| 643 | /* Reset and restore all of the 3c574 registers. */ |
| 644 | static void tc574_reset(struct net_device *dev) |
| 645 | { |
| 646 | struct el3_private *lp = netdev_priv(dev); |
| 647 | int i; |
| 648 | kio_addr_t ioaddr = dev->base_addr; |
| 649 | unsigned long flags; |
| 650 | |
| 651 | tc574_wait_for_completion(dev, TotalReset|0x10); |
| 652 | |
| 653 | spin_lock_irqsave(&lp->window_lock, flags); |
| 654 | /* Clear any transactions in progress. */ |
| 655 | outw(0, ioaddr + RunnerWrCtrl); |
| 656 | outw(0, ioaddr + RunnerRdCtrl); |
| 657 | |
| 658 | /* Set the station address and mask. */ |
| 659 | EL3WINDOW(2); |
| 660 | for (i = 0; i < 6; i++) |
| 661 | outb(dev->dev_addr[i], ioaddr + i); |
| 662 | for (; i < 12; i+=2) |
| 663 | outw(0, ioaddr + i); |
| 664 | |
| 665 | /* Reset config options */ |
| 666 | EL3WINDOW(3); |
| 667 | outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); |
| 668 | outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b, |
| 669 | ioaddr + Wn3_Config); |
| 670 | /* Roadrunner only: Turn on the MII transceiver. */ |
| 671 | outw(0x8040, ioaddr + Wn3_Options); |
| 672 | mdelay(1); |
| 673 | outw(0xc040, ioaddr + Wn3_Options); |
| 674 | EL3WINDOW(1); |
| 675 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 676 | |
| 677 | tc574_wait_for_completion(dev, TxReset); |
| 678 | tc574_wait_for_completion(dev, RxReset); |
| 679 | mdelay(1); |
| 680 | spin_lock_irqsave(&lp->window_lock, flags); |
| 681 | EL3WINDOW(3); |
| 682 | outw(0x8040, ioaddr + Wn3_Options); |
| 683 | |
| 684 | /* Switch to the stats window, and clear all stats by reading. */ |
| 685 | outw(StatsDisable, ioaddr + EL3_CMD); |
| 686 | EL3WINDOW(6); |
| 687 | for (i = 0; i < 10; i++) |
| 688 | inb(ioaddr + i); |
| 689 | inw(ioaddr + 10); |
| 690 | inw(ioaddr + 12); |
| 691 | EL3WINDOW(4); |
| 692 | inb(ioaddr + 12); |
| 693 | inb(ioaddr + 13); |
| 694 | |
| 695 | /* .. enable any extra statistics bits.. */ |
| 696 | outw(0x0040, ioaddr + Wn4_NetDiag); |
| 697 | |
| 698 | EL3WINDOW(1); |
| 699 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 700 | |
| 701 | /* .. re-sync MII and re-fill what NWay is advertising. */ |
| 702 | mdio_sync(ioaddr, 32); |
| 703 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); |
| 704 | if (!auto_polarity) { |
| 705 | /* works for TDK 78Q2120 series MII's */ |
| 706 | int i = mdio_read(ioaddr, lp->phys, 16) | 0x20; |
| 707 | mdio_write(ioaddr, lp->phys, 16, i); |
| 708 | } |
| 709 | |
| 710 | spin_lock_irqsave(&lp->window_lock, flags); |
| 711 | /* Switch to register set 1 for normal use, just for TxFree. */ |
| 712 | set_rx_mode(dev); |
| 713 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 714 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ |
| 715 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ |
| 716 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ |
| 717 | /* Allow status bits to be seen. */ |
| 718 | outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); |
| 719 | /* Ack all pending events, and set active indicator mask. */ |
| 720 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, |
| 721 | ioaddr + EL3_CMD); |
| 722 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull |
| 723 | | AdapterFailure | RxEarly, ioaddr + EL3_CMD); |
| 724 | } |
| 725 | |
| 726 | static int el3_open(struct net_device *dev) |
| 727 | { |
| 728 | struct el3_private *lp = netdev_priv(dev); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 729 | struct pcmcia_device *link = lp->p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | |
Dominik Brodowski | 9940ec3 | 2006-03-05 11:04:33 +0100 | [diff] [blame] | 731 | if (!pcmcia_dev_present(link)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | return -ENODEV; |
| 733 | |
| 734 | link->open++; |
| 735 | netif_start_queue(dev); |
| 736 | |
| 737 | tc574_reset(dev); |
| 738 | lp->media.function = &media_check; |
| 739 | lp->media.data = (unsigned long) dev; |
| 740 | lp->media.expires = jiffies + HZ; |
| 741 | add_timer(&lp->media); |
| 742 | |
| 743 | DEBUG(2, "%s: opened, status %4.4x.\n", |
| 744 | dev->name, inw(dev->base_addr + EL3_STATUS)); |
| 745 | |
| 746 | return 0; |
| 747 | } |
| 748 | |
| 749 | static void el3_tx_timeout(struct net_device *dev) |
| 750 | { |
| 751 | struct el3_private *lp = netdev_priv(dev); |
| 752 | kio_addr_t ioaddr = dev->base_addr; |
| 753 | |
| 754 | printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name); |
| 755 | dump_status(dev); |
| 756 | lp->stats.tx_errors++; |
| 757 | dev->trans_start = jiffies; |
| 758 | /* Issue TX_RESET and TX_START commands. */ |
| 759 | tc574_wait_for_completion(dev, TxReset); |
| 760 | outw(TxEnable, ioaddr + EL3_CMD); |
| 761 | netif_wake_queue(dev); |
| 762 | } |
| 763 | |
| 764 | static void pop_tx_status(struct net_device *dev) |
| 765 | { |
| 766 | struct el3_private *lp = netdev_priv(dev); |
| 767 | kio_addr_t ioaddr = dev->base_addr; |
| 768 | int i; |
| 769 | |
| 770 | /* Clear the Tx status stack. */ |
| 771 | for (i = 32; i > 0; i--) { |
| 772 | u_char tx_status = inb(ioaddr + TxStatus); |
| 773 | if (!(tx_status & 0x84)) |
| 774 | break; |
| 775 | /* reset transmitter on jabber error or underrun */ |
| 776 | if (tx_status & 0x30) |
| 777 | tc574_wait_for_completion(dev, TxReset); |
| 778 | if (tx_status & 0x38) { |
| 779 | DEBUG(1, "%s: transmit error: status 0x%02x\n", |
| 780 | dev->name, tx_status); |
| 781 | outw(TxEnable, ioaddr + EL3_CMD); |
| 782 | lp->stats.tx_aborted_errors++; |
| 783 | } |
| 784 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 789 | { |
| 790 | kio_addr_t ioaddr = dev->base_addr; |
| 791 | struct el3_private *lp = netdev_priv(dev); |
| 792 | unsigned long flags; |
| 793 | |
| 794 | DEBUG(3, "%s: el3_start_xmit(length = %ld) called, " |
| 795 | "status %4.4x.\n", dev->name, (long)skb->len, |
| 796 | inw(ioaddr + EL3_STATUS)); |
| 797 | |
| 798 | spin_lock_irqsave(&lp->window_lock, flags); |
| 799 | outw(skb->len, ioaddr + TX_FIFO); |
| 800 | outw(0, ioaddr + TX_FIFO); |
| 801 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2); |
| 802 | |
| 803 | dev->trans_start = jiffies; |
| 804 | |
| 805 | /* TxFree appears only in Window 1, not offset 0x1c. */ |
| 806 | if (inw(ioaddr + TxFree) <= 1536) { |
| 807 | netif_stop_queue(dev); |
| 808 | /* Interrupt us when the FIFO has room for max-sized packet. |
| 809 | The threshold is in units of dwords. */ |
| 810 | outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD); |
| 811 | } |
| 812 | |
| 813 | pop_tx_status(dev); |
| 814 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 815 | dev_kfree_skb(skb); |
| 816 | return 0; |
| 817 | } |
| 818 | |
| 819 | /* The EL3 interrupt handler. */ |
| 820 | static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 821 | { |
| 822 | struct net_device *dev = (struct net_device *) dev_id; |
| 823 | struct el3_private *lp = netdev_priv(dev); |
| 824 | kio_addr_t ioaddr; |
| 825 | unsigned status; |
| 826 | int work_budget = max_interrupt_work; |
| 827 | int handled = 0; |
| 828 | |
| 829 | if (!netif_device_present(dev)) |
| 830 | return IRQ_NONE; |
| 831 | ioaddr = dev->base_addr; |
| 832 | |
| 833 | DEBUG(3, "%s: interrupt, status %4.4x.\n", |
| 834 | dev->name, inw(ioaddr + EL3_STATUS)); |
| 835 | |
| 836 | spin_lock(&lp->window_lock); |
| 837 | |
| 838 | while ((status = inw(ioaddr + EL3_STATUS)) & |
| 839 | (IntLatch | RxComplete | RxEarly | StatsFull)) { |
| 840 | if (!netif_device_present(dev) || |
| 841 | ((status & 0xe000) != 0x2000)) { |
| 842 | DEBUG(1, "%s: Interrupt from dead card\n", dev->name); |
| 843 | break; |
| 844 | } |
| 845 | |
| 846 | handled = 1; |
| 847 | |
| 848 | if (status & RxComplete) |
| 849 | work_budget = el3_rx(dev, work_budget); |
| 850 | |
| 851 | if (status & TxAvailable) { |
| 852 | DEBUG(3, " TX room bit was handled.\n"); |
| 853 | /* There's room in the FIFO for a full-sized packet. */ |
| 854 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); |
| 855 | netif_wake_queue(dev); |
| 856 | } |
| 857 | |
| 858 | if (status & TxComplete) |
| 859 | pop_tx_status(dev); |
| 860 | |
| 861 | if (status & (AdapterFailure | RxEarly | StatsFull)) { |
| 862 | /* Handle all uncommon interrupts. */ |
| 863 | if (status & StatsFull) |
| 864 | update_stats(dev); |
| 865 | if (status & RxEarly) { |
| 866 | work_budget = el3_rx(dev, work_budget); |
| 867 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); |
| 868 | } |
| 869 | if (status & AdapterFailure) { |
| 870 | u16 fifo_diag; |
| 871 | EL3WINDOW(4); |
| 872 | fifo_diag = inw(ioaddr + Wn4_FIFODiag); |
| 873 | EL3WINDOW(1); |
| 874 | printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic" |
| 875 | " register %04x.\n", dev->name, fifo_diag); |
| 876 | if (fifo_diag & 0x0400) { |
| 877 | /* Tx overrun */ |
| 878 | tc574_wait_for_completion(dev, TxReset); |
| 879 | outw(TxEnable, ioaddr + EL3_CMD); |
| 880 | } |
| 881 | if (fifo_diag & 0x2000) { |
| 882 | /* Rx underrun */ |
| 883 | tc574_wait_for_completion(dev, RxReset); |
| 884 | set_rx_mode(dev); |
| 885 | outw(RxEnable, ioaddr + EL3_CMD); |
| 886 | } |
| 887 | outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); |
| 888 | } |
| 889 | } |
| 890 | |
| 891 | if (--work_budget < 0) { |
| 892 | DEBUG(0, "%s: Too much work in interrupt, " |
| 893 | "status %4.4x.\n", dev->name, status); |
| 894 | /* Clear all interrupts */ |
| 895 | outw(AckIntr | 0xFF, ioaddr + EL3_CMD); |
| 896 | break; |
| 897 | } |
| 898 | /* Acknowledge the IRQ. */ |
| 899 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); |
| 900 | } |
| 901 | |
| 902 | DEBUG(3, "%s: exiting interrupt, status %4.4x.\n", |
| 903 | dev->name, inw(ioaddr + EL3_STATUS)); |
| 904 | |
| 905 | spin_unlock(&lp->window_lock); |
| 906 | return IRQ_RETVAL(handled); |
| 907 | } |
| 908 | |
| 909 | /* |
| 910 | This timer serves two purposes: to check for missed interrupts |
| 911 | (and as a last resort, poll the NIC for events), and to monitor |
| 912 | the MII, reporting changes in cable status. |
| 913 | */ |
| 914 | static void media_check(unsigned long arg) |
| 915 | { |
| 916 | struct net_device *dev = (struct net_device *) arg; |
| 917 | struct el3_private *lp = netdev_priv(dev); |
| 918 | kio_addr_t ioaddr = dev->base_addr; |
| 919 | unsigned long flags; |
| 920 | unsigned short /* cable, */ media, partner; |
| 921 | |
| 922 | if (!netif_device_present(dev)) |
| 923 | goto reschedule; |
| 924 | |
| 925 | /* Check for pending interrupt with expired latency timer: with |
| 926 | this, we can limp along even if the interrupt is blocked */ |
| 927 | if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) { |
| 928 | if (!lp->fast_poll) |
| 929 | printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name); |
| 930 | el3_interrupt(dev->irq, lp, NULL); |
| 931 | lp->fast_poll = HZ; |
| 932 | } |
| 933 | if (lp->fast_poll) { |
| 934 | lp->fast_poll--; |
| 935 | lp->media.expires = jiffies + 2*HZ/100; |
| 936 | add_timer(&lp->media); |
| 937 | return; |
| 938 | } |
| 939 | |
| 940 | spin_lock_irqsave(&lp->window_lock, flags); |
| 941 | EL3WINDOW(4); |
| 942 | media = mdio_read(ioaddr, lp->phys, 1); |
| 943 | partner = mdio_read(ioaddr, lp->phys, 5); |
| 944 | EL3WINDOW(1); |
| 945 | |
| 946 | if (media != lp->media_status) { |
| 947 | if ((media ^ lp->media_status) & 0x0004) |
| 948 | printk(KERN_INFO "%s: %s link beat\n", dev->name, |
| 949 | (lp->media_status & 0x0004) ? "lost" : "found"); |
| 950 | if ((media ^ lp->media_status) & 0x0020) { |
| 951 | lp->partner = 0; |
| 952 | if (lp->media_status & 0x0020) { |
| 953 | printk(KERN_INFO "%s: autonegotiation restarted\n", |
| 954 | dev->name); |
| 955 | } else if (partner) { |
| 956 | partner &= lp->advertising; |
| 957 | lp->partner = partner; |
| 958 | printk(KERN_INFO "%s: autonegotiation complete: " |
| 959 | "%sbaseT-%cD selected\n", dev->name, |
| 960 | ((partner & 0x0180) ? "100" : "10"), |
| 961 | ((partner & 0x0140) ? 'F' : 'H')); |
| 962 | } else { |
| 963 | printk(KERN_INFO "%s: link partner did not autonegotiate\n", |
| 964 | dev->name); |
| 965 | } |
| 966 | |
| 967 | EL3WINDOW(3); |
| 968 | outb((partner & 0x0140 ? 0x20 : 0) | |
| 969 | (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); |
| 970 | EL3WINDOW(1); |
| 971 | |
| 972 | } |
| 973 | if (media & 0x0010) |
| 974 | printk(KERN_INFO "%s: remote fault detected\n", |
| 975 | dev->name); |
| 976 | if (media & 0x0002) |
| 977 | printk(KERN_INFO "%s: jabber detected\n", dev->name); |
| 978 | lp->media_status = media; |
| 979 | } |
| 980 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 981 | |
| 982 | reschedule: |
| 983 | lp->media.expires = jiffies + HZ; |
| 984 | add_timer(&lp->media); |
| 985 | } |
| 986 | |
| 987 | static struct net_device_stats *el3_get_stats(struct net_device *dev) |
| 988 | { |
| 989 | struct el3_private *lp = netdev_priv(dev); |
| 990 | |
| 991 | if (netif_device_present(dev)) { |
| 992 | unsigned long flags; |
| 993 | spin_lock_irqsave(&lp->window_lock, flags); |
| 994 | update_stats(dev); |
| 995 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 996 | } |
| 997 | return &lp->stats; |
| 998 | } |
| 999 | |
| 1000 | /* Update statistics. |
| 1001 | Suprisingly this need not be run single-threaded, but it effectively is. |
| 1002 | The counters clear when read, so the adds must merely be atomic. |
| 1003 | */ |
| 1004 | static void update_stats(struct net_device *dev) |
| 1005 | { |
| 1006 | struct el3_private *lp = netdev_priv(dev); |
| 1007 | kio_addr_t ioaddr = dev->base_addr; |
| 1008 | u8 rx, tx, up; |
| 1009 | |
| 1010 | DEBUG(2, "%s: updating the statistics.\n", dev->name); |
| 1011 | |
| 1012 | if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */ |
| 1013 | return; |
| 1014 | |
| 1015 | /* Unlike the 3c509 we need not turn off stats updates while reading. */ |
| 1016 | /* Switch to the stats window, and read everything. */ |
| 1017 | EL3WINDOW(6); |
| 1018 | lp->stats.tx_carrier_errors += inb(ioaddr + 0); |
| 1019 | lp->stats.tx_heartbeat_errors += inb(ioaddr + 1); |
| 1020 | /* Multiple collisions. */ inb(ioaddr + 2); |
| 1021 | lp->stats.collisions += inb(ioaddr + 3); |
| 1022 | lp->stats.tx_window_errors += inb(ioaddr + 4); |
| 1023 | lp->stats.rx_fifo_errors += inb(ioaddr + 5); |
| 1024 | lp->stats.tx_packets += inb(ioaddr + 6); |
| 1025 | up = inb(ioaddr + 9); |
| 1026 | lp->stats.tx_packets += (up&0x30) << 4; |
| 1027 | /* Rx packets */ inb(ioaddr + 7); |
| 1028 | /* Tx deferrals */ inb(ioaddr + 8); |
| 1029 | rx = inw(ioaddr + 10); |
| 1030 | tx = inw(ioaddr + 12); |
| 1031 | |
| 1032 | EL3WINDOW(4); |
| 1033 | /* BadSSD */ inb(ioaddr + 12); |
| 1034 | up = inb(ioaddr + 13); |
| 1035 | |
| 1036 | lp->stats.tx_bytes += tx + ((up & 0xf0) << 12); |
| 1037 | |
| 1038 | EL3WINDOW(1); |
| 1039 | } |
| 1040 | |
| 1041 | static int el3_rx(struct net_device *dev, int worklimit) |
| 1042 | { |
| 1043 | struct el3_private *lp = netdev_priv(dev); |
| 1044 | kio_addr_t ioaddr = dev->base_addr; |
| 1045 | short rx_status; |
| 1046 | |
| 1047 | DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n", |
| 1048 | dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); |
| 1049 | while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) && |
| 1050 | (--worklimit >= 0)) { |
| 1051 | if (rx_status & 0x4000) { /* Error, update stats. */ |
| 1052 | short error = rx_status & 0x3800; |
| 1053 | lp->stats.rx_errors++; |
| 1054 | switch (error) { |
| 1055 | case 0x0000: lp->stats.rx_over_errors++; break; |
| 1056 | case 0x0800: lp->stats.rx_length_errors++; break; |
| 1057 | case 0x1000: lp->stats.rx_frame_errors++; break; |
| 1058 | case 0x1800: lp->stats.rx_length_errors++; break; |
| 1059 | case 0x2000: lp->stats.rx_frame_errors++; break; |
| 1060 | case 0x2800: lp->stats.rx_crc_errors++; break; |
| 1061 | } |
| 1062 | } else { |
| 1063 | short pkt_len = rx_status & 0x7ff; |
| 1064 | struct sk_buff *skb; |
| 1065 | |
| 1066 | skb = dev_alloc_skb(pkt_len+5); |
| 1067 | |
| 1068 | DEBUG(3, " Receiving packet size %d status %4.4x.\n", |
| 1069 | pkt_len, rx_status); |
| 1070 | if (skb != NULL) { |
| 1071 | skb->dev = dev; |
| 1072 | skb_reserve(skb, 2); |
| 1073 | insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), |
| 1074 | ((pkt_len+3)>>2)); |
| 1075 | skb->protocol = eth_type_trans(skb, dev); |
| 1076 | netif_rx(skb); |
| 1077 | dev->last_rx = jiffies; |
| 1078 | lp->stats.rx_packets++; |
| 1079 | lp->stats.rx_bytes += pkt_len; |
| 1080 | } else { |
| 1081 | DEBUG(1, "%s: couldn't allocate a sk_buff of" |
| 1082 | " size %d.\n", dev->name, pkt_len); |
| 1083 | lp->stats.rx_dropped++; |
| 1084 | } |
| 1085 | } |
| 1086 | tc574_wait_for_completion(dev, RxDiscard); |
| 1087 | } |
| 1088 | |
| 1089 | return worklimit; |
| 1090 | } |
| 1091 | |
| 1092 | static void netdev_get_drvinfo(struct net_device *dev, |
| 1093 | struct ethtool_drvinfo *info) |
| 1094 | { |
| 1095 | strcpy(info->driver, "3c574_cs"); |
| 1096 | } |
| 1097 | |
| 1098 | static struct ethtool_ops netdev_ethtool_ops = { |
| 1099 | .get_drvinfo = netdev_get_drvinfo, |
| 1100 | }; |
| 1101 | |
| 1102 | /* Provide ioctl() calls to examine the MII xcvr state. */ |
| 1103 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 1104 | { |
| 1105 | struct el3_private *lp = netdev_priv(dev); |
| 1106 | kio_addr_t ioaddr = dev->base_addr; |
| 1107 | u16 *data = (u16 *)&rq->ifr_ifru; |
| 1108 | int phy = lp->phys & 0x1f; |
| 1109 | |
| 1110 | DEBUG(2, "%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n", |
| 1111 | dev->name, rq->ifr_ifrn.ifrn_name, cmd, |
| 1112 | data[0], data[1], data[2], data[3]); |
| 1113 | |
| 1114 | switch(cmd) { |
| 1115 | case SIOCGMIIPHY: /* Get the address of the PHY in use. */ |
| 1116 | data[0] = phy; |
| 1117 | case SIOCGMIIREG: /* Read the specified MII register. */ |
| 1118 | { |
| 1119 | int saved_window; |
| 1120 | unsigned long flags; |
| 1121 | |
| 1122 | spin_lock_irqsave(&lp->window_lock, flags); |
| 1123 | saved_window = inw(ioaddr + EL3_CMD) >> 13; |
| 1124 | EL3WINDOW(4); |
| 1125 | data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f); |
| 1126 | EL3WINDOW(saved_window); |
| 1127 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 1128 | return 0; |
| 1129 | } |
| 1130 | case SIOCSMIIREG: /* Write the specified MII register */ |
| 1131 | { |
| 1132 | int saved_window; |
| 1133 | unsigned long flags; |
| 1134 | |
| 1135 | if (!capable(CAP_NET_ADMIN)) |
| 1136 | return -EPERM; |
| 1137 | spin_lock_irqsave(&lp->window_lock, flags); |
| 1138 | saved_window = inw(ioaddr + EL3_CMD) >> 13; |
| 1139 | EL3WINDOW(4); |
| 1140 | mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]); |
| 1141 | EL3WINDOW(saved_window); |
| 1142 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 1143 | return 0; |
| 1144 | } |
| 1145 | default: |
| 1146 | return -EOPNOTSUPP; |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | /* The Odie chip has a 64 bin multicast filter, but the bit layout is not |
| 1151 | documented. Until it is we revert to receiving all multicast frames when |
| 1152 | any multicast reception is desired. |
| 1153 | Note: My other drivers emit a log message whenever promiscuous mode is |
| 1154 | entered to help detect password sniffers. This is less desirable on |
| 1155 | typical PC card machines, so we omit the message. |
| 1156 | */ |
| 1157 | |
| 1158 | static void set_rx_mode(struct net_device *dev) |
| 1159 | { |
| 1160 | kio_addr_t ioaddr = dev->base_addr; |
| 1161 | |
| 1162 | if (dev->flags & IFF_PROMISC) |
| 1163 | outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm, |
| 1164 | ioaddr + EL3_CMD); |
| 1165 | else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) |
| 1166 | outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD); |
| 1167 | else |
| 1168 | outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD); |
| 1169 | } |
| 1170 | |
| 1171 | static int el3_close(struct net_device *dev) |
| 1172 | { |
| 1173 | kio_addr_t ioaddr = dev->base_addr; |
| 1174 | struct el3_private *lp = netdev_priv(dev); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 1175 | struct pcmcia_device *link = lp->p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | |
| 1177 | DEBUG(2, "%s: shutting down ethercard.\n", dev->name); |
| 1178 | |
Dominik Brodowski | 9940ec3 | 2006-03-05 11:04:33 +0100 | [diff] [blame] | 1179 | if (pcmcia_dev_present(link)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | unsigned long flags; |
| 1181 | |
| 1182 | /* Turn off statistics ASAP. We update lp->stats below. */ |
| 1183 | outw(StatsDisable, ioaddr + EL3_CMD); |
| 1184 | |
| 1185 | /* Disable the receiver and transmitter. */ |
| 1186 | outw(RxDisable, ioaddr + EL3_CMD); |
| 1187 | outw(TxDisable, ioaddr + EL3_CMD); |
| 1188 | |
| 1189 | /* Note: Switching to window 0 may disable the IRQ. */ |
| 1190 | EL3WINDOW(0); |
| 1191 | spin_lock_irqsave(&lp->window_lock, flags); |
| 1192 | update_stats(dev); |
| 1193 | spin_unlock_irqrestore(&lp->window_lock, flags); |
Daniel Ritz | b9a6eaf | 2005-04-10 20:27:45 +0200 | [diff] [blame] | 1194 | |
| 1195 | /* force interrupts off */ |
| 1196 | outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | } |
| 1198 | |
| 1199 | link->open--; |
| 1200 | netif_stop_queue(dev); |
| 1201 | del_timer_sync(&lp->media); |
| 1202 | |
| 1203 | return 0; |
| 1204 | } |
| 1205 | |
Dominik Brodowski | 270b6e9 | 2005-06-27 16:28:18 -0700 | [diff] [blame] | 1206 | static struct pcmcia_device_id tc574_ids[] = { |
| 1207 | PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574), |
| 1208 | PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "3CCFEM556.cis"), |
| 1209 | PCMCIA_DEVICE_NULL, |
| 1210 | }; |
| 1211 | MODULE_DEVICE_TABLE(pcmcia, tc574_ids); |
| 1212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | static struct pcmcia_driver tc574_driver = { |
| 1214 | .owner = THIS_MODULE, |
| 1215 | .drv = { |
| 1216 | .name = "3c574_cs", |
| 1217 | }, |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 1218 | .probe = tc574_probe, |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 1219 | .remove = tc574_detach, |
Dominik Brodowski | 270b6e9 | 2005-06-27 16:28:18 -0700 | [diff] [blame] | 1220 | .id_table = tc574_ids, |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 1221 | .suspend = tc574_suspend, |
| 1222 | .resume = tc574_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | }; |
| 1224 | |
| 1225 | static int __init init_tc574(void) |
| 1226 | { |
| 1227 | return pcmcia_register_driver(&tc574_driver); |
| 1228 | } |
| 1229 | |
| 1230 | static void __exit exit_tc574(void) |
| 1231 | { |
| 1232 | pcmcia_unregister_driver(&tc574_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | module_init(init_tc574); |
| 1236 | module_exit(exit_tc574); |