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> |
Ben Hutchings | 0fa0ee05 | 2009-09-03 10:41:17 +0000 | [diff] [blame] | 88 | #include <linux/mii.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
| 96 | #include <asm/uaccess.h> |
| 97 | #include <asm/io.h> |
| 98 | #include <asm/system.h> |
| 99 | |
| 100 | /*====================================================================*/ |
| 101 | |
| 102 | /* Module parameters */ |
| 103 | |
| 104 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); |
| 105 | MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver"); |
| 106 | MODULE_LICENSE("GPL"); |
| 107 | |
| 108 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) |
| 109 | |
| 110 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ |
| 111 | INT_MODULE_PARM(max_interrupt_work, 32); |
| 112 | |
| 113 | /* Force full duplex modes? */ |
| 114 | INT_MODULE_PARM(full_duplex, 0); |
| 115 | |
| 116 | /* Autodetect link polarity reversal? */ |
| 117 | INT_MODULE_PARM(auto_polarity, 1); |
| 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
| 120 | /*====================================================================*/ |
| 121 | |
| 122 | /* Time in jiffies before concluding the transmitter is hung. */ |
| 123 | #define TX_TIMEOUT ((800*HZ)/1000) |
| 124 | |
| 125 | /* To minimize the size of the driver source and make the driver more |
| 126 | readable not all constants are symbolically defined. |
| 127 | You'll need the manual if you want to understand driver details anyway. */ |
| 128 | /* Offsets from base I/O address. */ |
| 129 | #define EL3_DATA 0x00 |
| 130 | #define EL3_CMD 0x0e |
| 131 | #define EL3_STATUS 0x0e |
| 132 | |
| 133 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) |
| 134 | |
| 135 | /* The top five bits written to EL3_CMD are a command, the lower |
| 136 | 11 bits are the parameter, if applicable. */ |
| 137 | enum el3_cmds { |
| 138 | TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, |
| 139 | RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, |
| 140 | TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, |
| 141 | FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, |
| 142 | SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, |
| 143 | SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, |
| 144 | StatsDisable = 22<<11, StopCoax = 23<<11, |
| 145 | }; |
| 146 | |
| 147 | enum elxl_status { |
| 148 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, |
| 149 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, |
| 150 | IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 }; |
| 151 | |
| 152 | /* The SetRxFilter command accepts the following classes: */ |
| 153 | enum RxFilter { |
| 154 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 |
| 155 | }; |
| 156 | |
| 157 | enum Window0 { |
| 158 | Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */ |
| 159 | IntrStatus=0x0E, /* Valid in all windows. */ |
| 160 | }; |
| 161 | /* These assumes the larger EEPROM. */ |
| 162 | enum Win0_EEPROM_cmds { |
| 163 | EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300, |
| 164 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ |
| 165 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ |
| 166 | }; |
| 167 | |
| 168 | /* Register window 1 offsets, the window used in normal operation. |
| 169 | On the "Odie" this window is always mapped at offsets 0x10-0x1f. |
| 170 | Except for TxFree, which is overlapped by RunnerWrCtrl. */ |
| 171 | enum Window1 { |
| 172 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, |
| 173 | RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B, |
| 174 | TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */ |
| 175 | RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c, |
| 176 | }; |
| 177 | |
| 178 | enum Window3 { /* Window 3: MAC/config bits. */ |
| 179 | Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8, |
| 180 | }; |
Al Viro | b665982 | 2008-01-13 14:17:35 +0000 | [diff] [blame] | 181 | enum wn3_config { |
| 182 | Ram_size = 7, |
| 183 | Ram_width = 8, |
| 184 | Ram_speed = 0x30, |
| 185 | Rom_size = 0xc0, |
| 186 | Ram_split_shift = 16, |
| 187 | Ram_split = 3 << Ram_split_shift, |
| 188 | Xcvr_shift = 20, |
| 189 | Xcvr = 7 << Xcvr_shift, |
| 190 | Autoselect = 0x1000000, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | }; |
| 192 | |
| 193 | enum Window4 { /* Window 4: Xcvr/media bits. */ |
| 194 | Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10, |
| 195 | }; |
| 196 | |
| 197 | #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ |
| 198 | |
| 199 | struct el3_private { |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 200 | struct pcmcia_device *p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | u16 advertising, partner; /* NWay media advertisement */ |
| 202 | unsigned char phys; /* MII device address */ |
| 203 | unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */ |
| 204 | /* for transceiver monitoring */ |
| 205 | struct timer_list media; |
| 206 | unsigned short media_status; |
| 207 | unsigned short fast_poll; |
| 208 | unsigned long last_irq; |
| 209 | spinlock_t window_lock; /* Guards the Window selection */ |
| 210 | }; |
| 211 | |
| 212 | /* Set iff a MII transceiver on any interface requires mdio preamble. |
| 213 | This only set with the original DP83840 on older 3c905 boards, so the extra |
| 214 | code size of a per-interface flag is not worthwhile. */ |
| 215 | static char mii_preamble_required = 0; |
| 216 | |
| 217 | /* Index of functions. */ |
| 218 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 219 | static int tc574_config(struct pcmcia_device *link); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 220 | static void tc574_release(struct pcmcia_device *link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 222 | static void mdio_sync(unsigned int ioaddr, int bits); |
| 223 | static int mdio_read(unsigned int ioaddr, int phy_id, int location); |
| 224 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, |
| 225 | int value); |
| 226 | static unsigned short read_eeprom(unsigned int ioaddr, int index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | static void tc574_wait_for_completion(struct net_device *dev, int cmd); |
| 228 | |
| 229 | static void tc574_reset(struct net_device *dev); |
| 230 | static void media_check(unsigned long arg); |
| 231 | static int el3_open(struct net_device *dev); |
Stephen Hemminger | dbf02fa | 2009-08-31 19:50:49 +0000 | [diff] [blame] | 232 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
| 233 | struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 234 | static irqreturn_t el3_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | static void update_stats(struct net_device *dev); |
| 236 | static struct net_device_stats *el3_get_stats(struct net_device *dev); |
| 237 | static int el3_rx(struct net_device *dev, int worklimit); |
| 238 | static int el3_close(struct net_device *dev); |
| 239 | static void el3_tx_timeout(struct net_device *dev); |
| 240 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 241 | static const struct ethtool_ops netdev_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | static void set_rx_mode(struct net_device *dev); |
Ken Kawasaki | e3eef53 | 2009-10-13 00:32:55 -0700 | [diff] [blame] | 243 | static void set_multicast_list(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 245 | static void tc574_detach(struct pcmcia_device *p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | /* |
| 248 | tc574_attach() creates an "instance" of the driver, allocating |
| 249 | local data structures for one device. The device is registered |
| 250 | with Card Services. |
| 251 | */ |
Stephen Hemminger | fb72e2f | 2009-03-20 19:36:02 +0000 | [diff] [blame] | 252 | static const struct net_device_ops el3_netdev_ops = { |
| 253 | .ndo_open = el3_open, |
| 254 | .ndo_stop = el3_close, |
| 255 | .ndo_start_xmit = el3_start_xmit, |
| 256 | .ndo_tx_timeout = el3_tx_timeout, |
| 257 | .ndo_get_stats = el3_get_stats, |
| 258 | .ndo_do_ioctl = el3_ioctl, |
Ken Kawasaki | e3eef53 | 2009-10-13 00:32:55 -0700 | [diff] [blame] | 259 | .ndo_set_multicast_list = set_multicast_list, |
Stephen Hemminger | fb72e2f | 2009-03-20 19:36:02 +0000 | [diff] [blame] | 260 | .ndo_change_mtu = eth_change_mtu, |
| 261 | .ndo_set_mac_address = eth_mac_addr, |
| 262 | .ndo_validate_addr = eth_validate_addr, |
| 263 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 265 | static int tc574_probe(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | { |
| 267 | struct el3_private *lp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 270 | dev_dbg(&link->dev, "3c574_attach()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
| 272 | /* Create the PC card device object. */ |
| 273 | dev = alloc_etherdev(sizeof(struct el3_private)); |
| 274 | if (!dev) |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 275 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | link->priv = dev; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 278 | lp->p_dev = link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
| 280 | spin_lock_init(&lp->window_lock); |
Dominik Brodowski | 90abdc3 | 2010-07-24 17:23:51 +0200 | [diff] [blame] | 281 | link->resource[0]->end = 32; |
| 282 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | link->conf.Attributes = CONF_ENABLE_IRQ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | link->conf.IntType = INT_MEMORY_AND_IO; |
| 285 | link->conf.ConfigIndex = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Stephen Hemminger | fb72e2f | 2009-03-20 19:36:02 +0000 | [diff] [blame] | 287 | dev->netdev_ops = &el3_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | dev->watchdog_timeo = TX_TIMEOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 291 | return tc574_config(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } /* tc574_attach */ |
| 293 | |
| 294 | /* |
| 295 | |
| 296 | This deletes a driver "instance". The device is de-registered |
| 297 | with Card Services. If it has been released, all local data |
| 298 | structures are freed. Otherwise, the structures will be freed |
| 299 | when the device is released. |
| 300 | |
| 301 | */ |
| 302 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 303 | static void tc574_detach(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
| 305 | struct net_device *dev = link->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 307 | dev_dbg(&link->dev, "3c574_detach()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
Dominik Brodowski | c7c2fa0 | 2010-03-20 19:39:26 +0100 | [diff] [blame] | 309 | unregister_netdev(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 311 | tc574_release(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | free_netdev(dev); |
| 314 | } /* tc574_detach */ |
| 315 | |
| 316 | /* |
| 317 | tc574_config() is scheduled to run after a CARD_INSERTION event |
| 318 | is received, to configure the PCMCIA socket, and to make the |
| 319 | ethernet device available to the system. |
| 320 | */ |
| 321 | |
Arjan van de Ven | f71e130 | 2006-03-03 21:33:57 -0500 | [diff] [blame] | 322 | 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] | 323 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 324 | static int tc574_config(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | struct net_device *dev = link->priv; |
| 327 | struct el3_private *lp = netdev_priv(dev); |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 328 | int ret, i, j; |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 329 | unsigned int ioaddr; |
Al Viro | b1e247a | 2007-12-22 18:56:13 +0000 | [diff] [blame] | 330 | __be16 *phys_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | char *cardname; |
Al Viro | b665982 | 2008-01-13 14:17:35 +0000 | [diff] [blame] | 332 | __u32 config; |
Dominik Brodowski | dddfbd8 | 2009-10-18 23:54:24 +0200 | [diff] [blame] | 333 | u8 *buf; |
| 334 | size_t len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Al Viro | b1e247a | 2007-12-22 18:56:13 +0000 | [diff] [blame] | 336 | phys_addr = (__be16 *)dev->dev_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 338 | dev_dbg(&link->dev, "3c574_config()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
Dominik Brodowski | 90abdc3 | 2010-07-24 17:23:51 +0200 | [diff] [blame] | 340 | link->io_lines = 16; |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | for (i = j = 0; j < 0x400; j += 0x20) { |
Dominik Brodowski | 90abdc3 | 2010-07-24 17:23:51 +0200 | [diff] [blame] | 343 | link->resource[0]->start = j ^ 0x300; |
| 344 | i = pcmcia_request_io(link); |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 345 | if (i == 0) |
| 346 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | } |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 348 | if (i != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | goto failed; |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 350 | |
Dominik Brodowski | eb14120 | 2010-03-07 12:21:16 +0100 | [diff] [blame] | 351 | ret = pcmcia_request_irq(link, el3_interrupt); |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 352 | if (ret) |
| 353 | goto failed; |
| 354 | |
| 355 | ret = pcmcia_request_configuration(link, &link->conf); |
| 356 | if (ret) |
| 357 | goto failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
Dominik Brodowski | eb14120 | 2010-03-07 12:21:16 +0100 | [diff] [blame] | 359 | dev->irq = link->irq; |
Dominik Brodowski | 9a017a9 | 2010-07-24 15:58:54 +0200 | [diff] [blame] | 360 | dev->base_addr = link->resource[0]->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
| 362 | ioaddr = dev->base_addr; |
| 363 | |
| 364 | /* The 3c574 normally uses an EEPROM for configuration info, including |
| 365 | the hardware address. The future products may include a modem chip |
| 366 | and put the address in the CIS. */ |
Dominik Brodowski | dddfbd8 | 2009-10-18 23:54:24 +0200 | [diff] [blame] | 367 | |
| 368 | len = pcmcia_get_tuple(link, 0x88, &buf); |
| 369 | if (buf && len >= 6) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | for (i = 0; i < 3; i++) |
Dominik Brodowski | dddfbd8 | 2009-10-18 23:54:24 +0200 | [diff] [blame] | 371 | phys_addr[i] = htons(le16_to_cpu(buf[i * 2])); |
| 372 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | } else { |
Dominik Brodowski | dddfbd8 | 2009-10-18 23:54:24 +0200 | [diff] [blame] | 374 | kfree(buf); /* 0 < len < 6 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | EL3WINDOW(0); |
| 376 | for (i = 0; i < 3; i++) |
| 377 | phys_addr[i] = htons(read_eeprom(ioaddr, i + 10)); |
Al Viro | b1e247a | 2007-12-22 18:56:13 +0000 | [diff] [blame] | 378 | if (phys_addr[0] == htons(0x6060)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx" |
| 380 | "-0x%03lx\n", dev->base_addr, dev->base_addr+15); |
| 381 | goto failed; |
| 382 | } |
| 383 | } |
Dominik Brodowski | a9606fd | 2006-06-04 18:06:13 +0200 | [diff] [blame] | 384 | if (link->prod_id[1]) |
| 385 | cardname = link->prod_id[1]; |
| 386 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | cardname = "3Com 3c574"; |
| 388 | |
| 389 | { |
| 390 | u_char mcr; |
| 391 | outw(2<<11, ioaddr + RunnerRdCtrl); |
| 392 | mcr = inb(ioaddr + 2); |
| 393 | outw(0<<11, ioaddr + RunnerRdCtrl); |
| 394 | printk(KERN_INFO " ASIC rev %d,", mcr>>3); |
| 395 | EL3WINDOW(3); |
Al Viro | b665982 | 2008-01-13 14:17:35 +0000 | [diff] [blame] | 396 | config = inl(ioaddr + Wn3_Config); |
| 397 | lp->default_media = (config & Xcvr) >> Xcvr_shift; |
| 398 | lp->autoselect = config & Autoselect ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | init_timer(&lp->media); |
| 402 | |
| 403 | { |
| 404 | int phy; |
| 405 | |
| 406 | /* Roadrunner only: Turn on the MII transceiver */ |
| 407 | outw(0x8040, ioaddr + Wn3_Options); |
| 408 | mdelay(1); |
| 409 | outw(0xc040, ioaddr + Wn3_Options); |
| 410 | tc574_wait_for_completion(dev, TxReset); |
| 411 | tc574_wait_for_completion(dev, RxReset); |
| 412 | mdelay(1); |
| 413 | outw(0x8040, ioaddr + Wn3_Options); |
| 414 | |
| 415 | EL3WINDOW(4); |
| 416 | for (phy = 1; phy <= 32; phy++) { |
| 417 | int mii_status; |
| 418 | mdio_sync(ioaddr, 32); |
| 419 | mii_status = mdio_read(ioaddr, phy & 0x1f, 1); |
| 420 | if (mii_status != 0xffff) { |
| 421 | lp->phys = phy & 0x1f; |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 422 | dev_dbg(&link->dev, " MII transceiver at " |
| 423 | "index %d, status %x.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | phy, mii_status); |
| 425 | if ((mii_status & 0x0040) == 0) |
| 426 | mii_preamble_required = 1; |
| 427 | break; |
| 428 | } |
| 429 | } |
| 430 | if (phy > 32) { |
| 431 | printk(KERN_NOTICE " No MII transceivers found!\n"); |
| 432 | goto failed; |
| 433 | } |
| 434 | i = mdio_read(ioaddr, lp->phys, 16) | 0x40; |
| 435 | mdio_write(ioaddr, lp->phys, 16, i); |
| 436 | lp->advertising = mdio_read(ioaddr, lp->phys, 4); |
| 437 | if (full_duplex) { |
| 438 | /* Only advertise the FD media types. */ |
| 439 | lp->advertising &= ~0x02a0; |
| 440 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); |
| 441 | } |
| 442 | } |
| 443 | |
Dominik Brodowski | dd2e5a1 | 2009-11-03 10:27:34 +0100 | [diff] [blame] | 444 | SET_NETDEV_DEV(dev, &link->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | if (register_netdev(dev) != 0) { |
| 447 | printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | goto failed; |
| 449 | } |
| 450 | |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 451 | printk(KERN_INFO "%s: %s at io %#3lx, irq %d, " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 452 | "hw_addr %pM.\n", |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 453 | dev->name, cardname, dev->base_addr, dev->irq, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 454 | dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n", |
Al Viro | b665982 | 2008-01-13 14:17:35 +0000 | [diff] [blame] | 456 | 8 << config & Ram_size, |
| 457 | ram_split[(config & Ram_split) >> Ram_split_shift], |
| 458 | config & Autoselect ? "autoselect " : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 460 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | failed: |
| 463 | tc574_release(link); |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 464 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
| 466 | } /* tc574_config */ |
| 467 | |
| 468 | /* |
| 469 | After a card is removed, tc574_release() will unregister the net |
| 470 | device, and release the PCMCIA configuration. If the device is |
| 471 | still open, this will be postponed until it is closed. |
| 472 | */ |
| 473 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 474 | static void tc574_release(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | { |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 476 | pcmcia_disable_device(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | } |
| 478 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 479 | static int tc574_suspend(struct pcmcia_device *link) |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 480 | { |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 481 | struct net_device *dev = link->priv; |
| 482 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 483 | if (link->open) |
Dominik Brodowski | 8661bb5 | 2006-03-02 00:02:33 +0100 | [diff] [blame] | 484 | netif_device_detach(dev); |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 485 | |
| 486 | return 0; |
| 487 | } |
| 488 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 489 | static int tc574_resume(struct pcmcia_device *link) |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 490 | { |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 491 | struct net_device *dev = link->priv; |
| 492 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 493 | if (link->open) { |
Dominik Brodowski | 8661bb5 | 2006-03-02 00:02:33 +0100 | [diff] [blame] | 494 | tc574_reset(dev); |
| 495 | netif_device_attach(dev); |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | return 0; |
| 499 | } |
| 500 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | static void dump_status(struct net_device *dev) |
| 502 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 503 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | EL3WINDOW(1); |
| 505 | printk(KERN_INFO " irq status %04x, rx status %04x, tx status " |
| 506 | "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS), |
| 507 | inw(ioaddr+RxStatus), inb(ioaddr+TxStatus), |
| 508 | inw(ioaddr+TxFree)); |
| 509 | EL3WINDOW(4); |
| 510 | printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x" |
| 511 | " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06), |
| 512 | inw(ioaddr+0x08), inw(ioaddr+0x0a)); |
| 513 | EL3WINDOW(1); |
| 514 | } |
| 515 | |
| 516 | /* |
| 517 | Use this for commands that may take time to finish |
| 518 | */ |
| 519 | static void tc574_wait_for_completion(struct net_device *dev, int cmd) |
| 520 | { |
| 521 | int i = 1500; |
| 522 | outw(cmd, dev->base_addr + EL3_CMD); |
| 523 | while (--i > 0) |
| 524 | if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break; |
| 525 | if (i == 0) |
| 526 | printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd); |
| 527 | } |
| 528 | |
| 529 | /* Read a word from the EEPROM using the regular EEPROM access register. |
| 530 | Assume that we are in register window zero. |
| 531 | */ |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 532 | static unsigned short read_eeprom(unsigned int ioaddr, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | { |
| 534 | int timer; |
| 535 | outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd); |
| 536 | /* Pause for at least 162 usec for the read to take place. */ |
| 537 | for (timer = 1620; timer >= 0; timer--) { |
| 538 | if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0) |
| 539 | break; |
| 540 | } |
| 541 | return inw(ioaddr + Wn0EepromData); |
| 542 | } |
| 543 | |
| 544 | /* MII transceiver control section. |
| 545 | Read and write the MII registers using software-generated serial |
| 546 | MDIO protocol. See the MII specifications or DP83840A data sheet |
| 547 | for details. |
| 548 | The maxium data clock rate is 2.5 Mhz. The timing is easily met by the |
| 549 | slow PC card interface. */ |
| 550 | |
| 551 | #define MDIO_SHIFT_CLK 0x01 |
| 552 | #define MDIO_DIR_WRITE 0x04 |
| 553 | #define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE) |
| 554 | #define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE) |
| 555 | #define MDIO_DATA_READ 0x02 |
| 556 | #define MDIO_ENB_IN 0x00 |
| 557 | |
| 558 | /* Generate the preamble required for initial synchronization and |
| 559 | a few older transceivers. */ |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 560 | static void mdio_sync(unsigned int ioaddr, int bits) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 562 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
| 564 | /* Establish sync by sending at least 32 logic ones. */ |
| 565 | while (-- bits >= 0) { |
| 566 | outw(MDIO_DATA_WRITE1, mdio_addr); |
| 567 | outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr); |
| 568 | } |
| 569 | } |
| 570 | |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 571 | static int mdio_read(unsigned int ioaddr, int phy_id, int location) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | { |
| 573 | int i; |
| 574 | int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; |
| 575 | unsigned int retval = 0; |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 576 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | |
| 578 | if (mii_preamble_required) |
| 579 | mdio_sync(ioaddr, 32); |
| 580 | |
| 581 | /* Shift the read command bits out. */ |
| 582 | for (i = 14; i >= 0; i--) { |
| 583 | int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
| 584 | outw(dataval, mdio_addr); |
| 585 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); |
| 586 | } |
| 587 | /* Read the two transition, 16 data, and wire-idle bits. */ |
| 588 | for (i = 19; i > 0; i--) { |
| 589 | outw(MDIO_ENB_IN, mdio_addr); |
| 590 | retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0); |
| 591 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); |
| 592 | } |
| 593 | return (retval>>1) & 0xffff; |
| 594 | } |
| 595 | |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 596 | static void mdio_write(unsigned int ioaddr, int phy_id, int location, int value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | { |
| 598 | int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value; |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 599 | unsigned int mdio_addr = ioaddr + Wn4_PhysicalMgmt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | int i; |
| 601 | |
| 602 | if (mii_preamble_required) |
| 603 | mdio_sync(ioaddr, 32); |
| 604 | |
| 605 | /* Shift the command bits out. */ |
| 606 | for (i = 31; i >= 0; i--) { |
| 607 | int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
| 608 | outw(dataval, mdio_addr); |
| 609 | outw(dataval | MDIO_SHIFT_CLK, mdio_addr); |
| 610 | } |
| 611 | /* Leave the interface idle. */ |
| 612 | for (i = 1; i >= 0; i--) { |
| 613 | outw(MDIO_ENB_IN, mdio_addr); |
| 614 | outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); |
| 615 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | /* Reset and restore all of the 3c574 registers. */ |
| 619 | static void tc574_reset(struct net_device *dev) |
| 620 | { |
| 621 | struct el3_private *lp = netdev_priv(dev); |
| 622 | int i; |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 623 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | unsigned long flags; |
| 625 | |
| 626 | tc574_wait_for_completion(dev, TotalReset|0x10); |
| 627 | |
| 628 | spin_lock_irqsave(&lp->window_lock, flags); |
| 629 | /* Clear any transactions in progress. */ |
| 630 | outw(0, ioaddr + RunnerWrCtrl); |
| 631 | outw(0, ioaddr + RunnerRdCtrl); |
| 632 | |
| 633 | /* Set the station address and mask. */ |
| 634 | EL3WINDOW(2); |
| 635 | for (i = 0; i < 6; i++) |
| 636 | outb(dev->dev_addr[i], ioaddr + i); |
| 637 | for (; i < 12; i+=2) |
| 638 | outw(0, ioaddr + i); |
| 639 | |
| 640 | /* Reset config options */ |
| 641 | EL3WINDOW(3); |
| 642 | outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); |
| 643 | outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b, |
| 644 | ioaddr + Wn3_Config); |
| 645 | /* Roadrunner only: Turn on the MII transceiver. */ |
| 646 | outw(0x8040, ioaddr + Wn3_Options); |
| 647 | mdelay(1); |
| 648 | outw(0xc040, ioaddr + Wn3_Options); |
| 649 | EL3WINDOW(1); |
| 650 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 651 | |
| 652 | tc574_wait_for_completion(dev, TxReset); |
| 653 | tc574_wait_for_completion(dev, RxReset); |
| 654 | mdelay(1); |
| 655 | spin_lock_irqsave(&lp->window_lock, flags); |
| 656 | EL3WINDOW(3); |
| 657 | outw(0x8040, ioaddr + Wn3_Options); |
| 658 | |
| 659 | /* Switch to the stats window, and clear all stats by reading. */ |
| 660 | outw(StatsDisable, ioaddr + EL3_CMD); |
| 661 | EL3WINDOW(6); |
| 662 | for (i = 0; i < 10; i++) |
| 663 | inb(ioaddr + i); |
| 664 | inw(ioaddr + 10); |
| 665 | inw(ioaddr + 12); |
| 666 | EL3WINDOW(4); |
| 667 | inb(ioaddr + 12); |
| 668 | inb(ioaddr + 13); |
| 669 | |
| 670 | /* .. enable any extra statistics bits.. */ |
| 671 | outw(0x0040, ioaddr + Wn4_NetDiag); |
| 672 | |
| 673 | EL3WINDOW(1); |
| 674 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 675 | |
| 676 | /* .. re-sync MII and re-fill what NWay is advertising. */ |
| 677 | mdio_sync(ioaddr, 32); |
| 678 | mdio_write(ioaddr, lp->phys, 4, lp->advertising); |
| 679 | if (!auto_polarity) { |
| 680 | /* works for TDK 78Q2120 series MII's */ |
Richard Knutsson | 1569d9e | 2008-02-04 22:27:39 -0800 | [diff] [blame] | 681 | i = mdio_read(ioaddr, lp->phys, 16) | 0x20; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | mdio_write(ioaddr, lp->phys, 16, i); |
| 683 | } |
| 684 | |
| 685 | spin_lock_irqsave(&lp->window_lock, flags); |
| 686 | /* Switch to register set 1 for normal use, just for TxFree. */ |
| 687 | set_rx_mode(dev); |
| 688 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 689 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ |
| 690 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ |
| 691 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ |
| 692 | /* Allow status bits to be seen. */ |
| 693 | outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); |
| 694 | /* Ack all pending events, and set active indicator mask. */ |
| 695 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, |
| 696 | ioaddr + EL3_CMD); |
| 697 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull |
| 698 | | AdapterFailure | RxEarly, ioaddr + EL3_CMD); |
| 699 | } |
| 700 | |
| 701 | static int el3_open(struct net_device *dev) |
| 702 | { |
| 703 | struct el3_private *lp = netdev_priv(dev); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 704 | struct pcmcia_device *link = lp->p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | |
Dominik Brodowski | 9940ec3 | 2006-03-05 11:04:33 +0100 | [diff] [blame] | 706 | if (!pcmcia_dev_present(link)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | return -ENODEV; |
| 708 | |
| 709 | link->open++; |
| 710 | netif_start_queue(dev); |
| 711 | |
| 712 | tc574_reset(dev); |
| 713 | lp->media.function = &media_check; |
| 714 | lp->media.data = (unsigned long) dev; |
| 715 | lp->media.expires = jiffies + HZ; |
| 716 | add_timer(&lp->media); |
| 717 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 718 | dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | dev->name, inw(dev->base_addr + EL3_STATUS)); |
| 720 | |
| 721 | return 0; |
| 722 | } |
| 723 | |
| 724 | static void el3_tx_timeout(struct net_device *dev) |
| 725 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 726 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | |
| 728 | printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name); |
| 729 | dump_status(dev); |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 730 | dev->stats.tx_errors++; |
Eric Dumazet | 1ae5dc3 | 2010-05-10 05:01:31 -0700 | [diff] [blame] | 731 | dev->trans_start = jiffies; /* prevent tx timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | /* Issue TX_RESET and TX_START commands. */ |
| 733 | tc574_wait_for_completion(dev, TxReset); |
| 734 | outw(TxEnable, ioaddr + EL3_CMD); |
| 735 | netif_wake_queue(dev); |
| 736 | } |
| 737 | |
| 738 | static void pop_tx_status(struct net_device *dev) |
| 739 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 740 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | int i; |
| 742 | |
| 743 | /* Clear the Tx status stack. */ |
| 744 | for (i = 32; i > 0; i--) { |
| 745 | u_char tx_status = inb(ioaddr + TxStatus); |
| 746 | if (!(tx_status & 0x84)) |
| 747 | break; |
| 748 | /* reset transmitter on jabber error or underrun */ |
| 749 | if (tx_status & 0x30) |
| 750 | tc574_wait_for_completion(dev, TxReset); |
| 751 | if (tx_status & 0x38) { |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 752 | pr_debug("%s: transmit error: status 0x%02x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | dev->name, tx_status); |
| 754 | outw(TxEnable, ioaddr + EL3_CMD); |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 755 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | } |
| 757 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ |
| 758 | } |
| 759 | } |
| 760 | |
Stephen Hemminger | dbf02fa | 2009-08-31 19:50:49 +0000 | [diff] [blame] | 761 | static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
| 762 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 764 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | struct el3_private *lp = netdev_priv(dev); |
| 766 | unsigned long flags; |
| 767 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 768 | pr_debug("%s: el3_start_xmit(length = %ld) called, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | "status %4.4x.\n", dev->name, (long)skb->len, |
| 770 | inw(ioaddr + EL3_STATUS)); |
| 771 | |
| 772 | spin_lock_irqsave(&lp->window_lock, flags); |
Alexander Kurz | df245dc | 2010-04-16 03:01:01 +0000 | [diff] [blame] | 773 | |
| 774 | dev->stats.tx_bytes += skb->len; |
| 775 | |
| 776 | /* Put out the doubleword header... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | outw(skb->len, ioaddr + TX_FIFO); |
| 778 | outw(0, ioaddr + TX_FIFO); |
Alexander Kurz | df245dc | 2010-04-16 03:01:01 +0000 | [diff] [blame] | 779 | /* ... and the packet rounded to a doubleword. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2); |
| 781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | /* TxFree appears only in Window 1, not offset 0x1c. */ |
| 783 | if (inw(ioaddr + TxFree) <= 1536) { |
| 784 | netif_stop_queue(dev); |
| 785 | /* Interrupt us when the FIFO has room for max-sized packet. |
| 786 | The threshold is in units of dwords. */ |
| 787 | outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD); |
| 788 | } |
| 789 | |
| 790 | pop_tx_status(dev); |
| 791 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 792 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 793 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | } |
| 795 | |
| 796 | /* The EL3 interrupt handler. */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 797 | static irqreturn_t el3_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | { |
| 799 | struct net_device *dev = (struct net_device *) dev_id; |
| 800 | struct el3_private *lp = netdev_priv(dev); |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 801 | unsigned int ioaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | unsigned status; |
| 803 | int work_budget = max_interrupt_work; |
| 804 | int handled = 0; |
| 805 | |
| 806 | if (!netif_device_present(dev)) |
| 807 | return IRQ_NONE; |
| 808 | ioaddr = dev->base_addr; |
| 809 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 810 | pr_debug("%s: interrupt, status %4.4x.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | dev->name, inw(ioaddr + EL3_STATUS)); |
| 812 | |
| 813 | spin_lock(&lp->window_lock); |
| 814 | |
| 815 | while ((status = inw(ioaddr + EL3_STATUS)) & |
| 816 | (IntLatch | RxComplete | RxEarly | StatsFull)) { |
| 817 | if (!netif_device_present(dev) || |
| 818 | ((status & 0xe000) != 0x2000)) { |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 819 | pr_debug("%s: Interrupt from dead card\n", dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | break; |
| 821 | } |
| 822 | |
| 823 | handled = 1; |
| 824 | |
| 825 | if (status & RxComplete) |
| 826 | work_budget = el3_rx(dev, work_budget); |
| 827 | |
| 828 | if (status & TxAvailable) { |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 829 | pr_debug(" TX room bit was handled.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | /* There's room in the FIFO for a full-sized packet. */ |
| 831 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); |
| 832 | netif_wake_queue(dev); |
| 833 | } |
| 834 | |
| 835 | if (status & TxComplete) |
| 836 | pop_tx_status(dev); |
| 837 | |
| 838 | if (status & (AdapterFailure | RxEarly | StatsFull)) { |
| 839 | /* Handle all uncommon interrupts. */ |
| 840 | if (status & StatsFull) |
| 841 | update_stats(dev); |
| 842 | if (status & RxEarly) { |
| 843 | work_budget = el3_rx(dev, work_budget); |
| 844 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); |
| 845 | } |
| 846 | if (status & AdapterFailure) { |
| 847 | u16 fifo_diag; |
| 848 | EL3WINDOW(4); |
| 849 | fifo_diag = inw(ioaddr + Wn4_FIFODiag); |
| 850 | EL3WINDOW(1); |
| 851 | printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic" |
| 852 | " register %04x.\n", dev->name, fifo_diag); |
| 853 | if (fifo_diag & 0x0400) { |
| 854 | /* Tx overrun */ |
| 855 | tc574_wait_for_completion(dev, TxReset); |
| 856 | outw(TxEnable, ioaddr + EL3_CMD); |
| 857 | } |
| 858 | if (fifo_diag & 0x2000) { |
| 859 | /* Rx underrun */ |
| 860 | tc574_wait_for_completion(dev, RxReset); |
| 861 | set_rx_mode(dev); |
| 862 | outw(RxEnable, ioaddr + EL3_CMD); |
| 863 | } |
| 864 | outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | if (--work_budget < 0) { |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 869 | pr_debug("%s: Too much work in interrupt, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | "status %4.4x.\n", dev->name, status); |
| 871 | /* Clear all interrupts */ |
| 872 | outw(AckIntr | 0xFF, ioaddr + EL3_CMD); |
| 873 | break; |
| 874 | } |
| 875 | /* Acknowledge the IRQ. */ |
| 876 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); |
| 877 | } |
| 878 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 879 | pr_debug("%s: exiting interrupt, status %4.4x.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | dev->name, inw(ioaddr + EL3_STATUS)); |
| 881 | |
| 882 | spin_unlock(&lp->window_lock); |
| 883 | return IRQ_RETVAL(handled); |
| 884 | } |
| 885 | |
| 886 | /* |
| 887 | This timer serves two purposes: to check for missed interrupts |
| 888 | (and as a last resort, poll the NIC for events), and to monitor |
| 889 | the MII, reporting changes in cable status. |
| 890 | */ |
| 891 | static void media_check(unsigned long arg) |
| 892 | { |
| 893 | struct net_device *dev = (struct net_device *) arg; |
| 894 | struct el3_private *lp = netdev_priv(dev); |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 895 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | unsigned long flags; |
| 897 | unsigned short /* cable, */ media, partner; |
| 898 | |
| 899 | if (!netif_device_present(dev)) |
| 900 | goto reschedule; |
| 901 | |
| 902 | /* Check for pending interrupt with expired latency timer: with |
| 903 | this, we can limp along even if the interrupt is blocked */ |
| 904 | if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) { |
| 905 | if (!lp->fast_poll) |
| 906 | printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name); |
Ken Kawasaki | 671c880 | 2009-12-12 14:44:11 +0000 | [diff] [blame] | 907 | |
| 908 | local_irq_save(flags); |
Komuro | e363d13 | 2007-02-10 11:57:35 +0900 | [diff] [blame] | 909 | el3_interrupt(dev->irq, dev); |
Ken Kawasaki | 671c880 | 2009-12-12 14:44:11 +0000 | [diff] [blame] | 910 | local_irq_restore(flags); |
| 911 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | lp->fast_poll = HZ; |
| 913 | } |
| 914 | if (lp->fast_poll) { |
| 915 | lp->fast_poll--; |
| 916 | lp->media.expires = jiffies + 2*HZ/100; |
| 917 | add_timer(&lp->media); |
| 918 | return; |
| 919 | } |
| 920 | |
| 921 | spin_lock_irqsave(&lp->window_lock, flags); |
| 922 | EL3WINDOW(4); |
| 923 | media = mdio_read(ioaddr, lp->phys, 1); |
| 924 | partner = mdio_read(ioaddr, lp->phys, 5); |
| 925 | EL3WINDOW(1); |
| 926 | |
| 927 | if (media != lp->media_status) { |
| 928 | if ((media ^ lp->media_status) & 0x0004) |
| 929 | printk(KERN_INFO "%s: %s link beat\n", dev->name, |
| 930 | (lp->media_status & 0x0004) ? "lost" : "found"); |
| 931 | if ((media ^ lp->media_status) & 0x0020) { |
| 932 | lp->partner = 0; |
| 933 | if (lp->media_status & 0x0020) { |
| 934 | printk(KERN_INFO "%s: autonegotiation restarted\n", |
| 935 | dev->name); |
| 936 | } else if (partner) { |
| 937 | partner &= lp->advertising; |
| 938 | lp->partner = partner; |
| 939 | printk(KERN_INFO "%s: autonegotiation complete: " |
| 940 | "%sbaseT-%cD selected\n", dev->name, |
| 941 | ((partner & 0x0180) ? "100" : "10"), |
| 942 | ((partner & 0x0140) ? 'F' : 'H')); |
| 943 | } else { |
| 944 | printk(KERN_INFO "%s: link partner did not autonegotiate\n", |
| 945 | dev->name); |
| 946 | } |
| 947 | |
| 948 | EL3WINDOW(3); |
| 949 | outb((partner & 0x0140 ? 0x20 : 0) | |
| 950 | (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); |
| 951 | EL3WINDOW(1); |
| 952 | |
| 953 | } |
| 954 | if (media & 0x0010) |
| 955 | printk(KERN_INFO "%s: remote fault detected\n", |
| 956 | dev->name); |
| 957 | if (media & 0x0002) |
| 958 | printk(KERN_INFO "%s: jabber detected\n", dev->name); |
| 959 | lp->media_status = media; |
| 960 | } |
| 961 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 962 | |
| 963 | reschedule: |
| 964 | lp->media.expires = jiffies + HZ; |
| 965 | add_timer(&lp->media); |
| 966 | } |
| 967 | |
| 968 | static struct net_device_stats *el3_get_stats(struct net_device *dev) |
| 969 | { |
| 970 | struct el3_private *lp = netdev_priv(dev); |
| 971 | |
| 972 | if (netif_device_present(dev)) { |
| 973 | unsigned long flags; |
| 974 | spin_lock_irqsave(&lp->window_lock, flags); |
| 975 | update_stats(dev); |
| 976 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 977 | } |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 978 | return &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | } |
| 980 | |
| 981 | /* Update statistics. |
| 982 | Suprisingly this need not be run single-threaded, but it effectively is. |
| 983 | The counters clear when read, so the adds must merely be atomic. |
| 984 | */ |
| 985 | static void update_stats(struct net_device *dev) |
| 986 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 987 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | u8 rx, tx, up; |
| 989 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 990 | pr_debug("%s: updating the statistics.\n", dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | |
| 992 | if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */ |
| 993 | return; |
| 994 | |
| 995 | /* Unlike the 3c509 we need not turn off stats updates while reading. */ |
| 996 | /* Switch to the stats window, and read everything. */ |
| 997 | EL3WINDOW(6); |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 998 | dev->stats.tx_carrier_errors += inb(ioaddr + 0); |
| 999 | dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | /* Multiple collisions. */ inb(ioaddr + 2); |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 1001 | dev->stats.collisions += inb(ioaddr + 3); |
| 1002 | dev->stats.tx_window_errors += inb(ioaddr + 4); |
| 1003 | dev->stats.rx_fifo_errors += inb(ioaddr + 5); |
| 1004 | dev->stats.tx_packets += inb(ioaddr + 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | up = inb(ioaddr + 9); |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 1006 | dev->stats.tx_packets += (up&0x30) << 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | /* Rx packets */ inb(ioaddr + 7); |
| 1008 | /* Tx deferrals */ inb(ioaddr + 8); |
| 1009 | rx = inw(ioaddr + 10); |
| 1010 | tx = inw(ioaddr + 12); |
| 1011 | |
| 1012 | EL3WINDOW(4); |
| 1013 | /* BadSSD */ inb(ioaddr + 12); |
| 1014 | up = inb(ioaddr + 13); |
| 1015 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | EL3WINDOW(1); |
| 1017 | } |
| 1018 | |
| 1019 | static int el3_rx(struct net_device *dev, int worklimit) |
| 1020 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 1021 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | short rx_status; |
| 1023 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 1024 | pr_debug("%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); |
| 1026 | while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) && |
Roel Kluin | b9bdcd9 | 2009-03-04 00:05:56 -0800 | [diff] [blame] | 1027 | worklimit > 0) { |
| 1028 | worklimit--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | if (rx_status & 0x4000) { /* Error, update stats. */ |
| 1030 | short error = rx_status & 0x3800; |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 1031 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | switch (error) { |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 1033 | case 0x0000: dev->stats.rx_over_errors++; break; |
| 1034 | case 0x0800: dev->stats.rx_length_errors++; break; |
| 1035 | case 0x1000: dev->stats.rx_frame_errors++; break; |
| 1036 | case 0x1800: dev->stats.rx_length_errors++; break; |
| 1037 | case 0x2000: dev->stats.rx_frame_errors++; break; |
| 1038 | case 0x2800: dev->stats.rx_crc_errors++; break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | } |
| 1040 | } else { |
| 1041 | short pkt_len = rx_status & 0x7ff; |
| 1042 | struct sk_buff *skb; |
| 1043 | |
| 1044 | skb = dev_alloc_skb(pkt_len+5); |
| 1045 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 1046 | pr_debug(" Receiving packet size %d status %4.4x.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | pkt_len, rx_status); |
| 1048 | if (skb != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | skb_reserve(skb, 2); |
| 1050 | insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), |
| 1051 | ((pkt_len+3)>>2)); |
| 1052 | skb->protocol = eth_type_trans(skb, dev); |
| 1053 | netif_rx(skb); |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 1054 | dev->stats.rx_packets++; |
| 1055 | dev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | } else { |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 1057 | pr_debug("%s: couldn't allocate a sk_buff of" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | " size %d.\n", dev->name, pkt_len); |
Paulius Zaleckas | 2e8d31d | 2008-04-30 01:08:26 +0300 | [diff] [blame] | 1059 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | } |
| 1061 | } |
| 1062 | tc574_wait_for_completion(dev, RxDiscard); |
| 1063 | } |
| 1064 | |
| 1065 | return worklimit; |
| 1066 | } |
| 1067 | |
| 1068 | static void netdev_get_drvinfo(struct net_device *dev, |
| 1069 | struct ethtool_drvinfo *info) |
| 1070 | { |
| 1071 | strcpy(info->driver, "3c574_cs"); |
| 1072 | } |
| 1073 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 1074 | static const struct ethtool_ops netdev_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | .get_drvinfo = netdev_get_drvinfo, |
| 1076 | }; |
| 1077 | |
| 1078 | /* Provide ioctl() calls to examine the MII xcvr state. */ |
| 1079 | static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 1080 | { |
| 1081 | struct el3_private *lp = netdev_priv(dev); |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 1082 | unsigned int ioaddr = dev->base_addr; |
Ben Hutchings | 0fa0ee05 | 2009-09-03 10:41:17 +0000 | [diff] [blame] | 1083 | struct mii_ioctl_data *data = if_mii(rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | int phy = lp->phys & 0x1f; |
| 1085 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 1086 | pr_debug("%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | dev->name, rq->ifr_ifrn.ifrn_name, cmd, |
Ben Hutchings | 0fa0ee05 | 2009-09-03 10:41:17 +0000 | [diff] [blame] | 1088 | data->phy_id, data->reg_num, data->val_in, data->val_out); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | |
| 1090 | switch(cmd) { |
| 1091 | case SIOCGMIIPHY: /* Get the address of the PHY in use. */ |
Ben Hutchings | 0fa0ee05 | 2009-09-03 10:41:17 +0000 | [diff] [blame] | 1092 | data->phy_id = phy; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | case SIOCGMIIREG: /* Read the specified MII register. */ |
| 1094 | { |
| 1095 | int saved_window; |
| 1096 | unsigned long flags; |
| 1097 | |
| 1098 | spin_lock_irqsave(&lp->window_lock, flags); |
| 1099 | saved_window = inw(ioaddr + EL3_CMD) >> 13; |
| 1100 | EL3WINDOW(4); |
Ben Hutchings | 0fa0ee05 | 2009-09-03 10:41:17 +0000 | [diff] [blame] | 1101 | data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, |
| 1102 | data->reg_num & 0x1f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | EL3WINDOW(saved_window); |
| 1104 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 1105 | return 0; |
| 1106 | } |
| 1107 | case SIOCSMIIREG: /* Write the specified MII register */ |
| 1108 | { |
| 1109 | int saved_window; |
| 1110 | unsigned long flags; |
| 1111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | spin_lock_irqsave(&lp->window_lock, flags); |
| 1113 | saved_window = inw(ioaddr + EL3_CMD) >> 13; |
| 1114 | EL3WINDOW(4); |
Ben Hutchings | 0fa0ee05 | 2009-09-03 10:41:17 +0000 | [diff] [blame] | 1115 | mdio_write(ioaddr, data->phy_id & 0x1f, |
| 1116 | data->reg_num & 0x1f, data->val_in); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | EL3WINDOW(saved_window); |
| 1118 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 1119 | return 0; |
| 1120 | } |
| 1121 | default: |
| 1122 | return -EOPNOTSUPP; |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | /* The Odie chip has a 64 bin multicast filter, but the bit layout is not |
| 1127 | documented. Until it is we revert to receiving all multicast frames when |
| 1128 | any multicast reception is desired. |
| 1129 | Note: My other drivers emit a log message whenever promiscuous mode is |
| 1130 | entered to help detect password sniffers. This is less desirable on |
| 1131 | typical PC card machines, so we omit the message. |
| 1132 | */ |
| 1133 | |
| 1134 | static void set_rx_mode(struct net_device *dev) |
| 1135 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 1136 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | |
| 1138 | if (dev->flags & IFF_PROMISC) |
| 1139 | outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm, |
| 1140 | ioaddr + EL3_CMD); |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1141 | else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD); |
| 1143 | else |
| 1144 | outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD); |
| 1145 | } |
| 1146 | |
Ken Kawasaki | e3eef53 | 2009-10-13 00:32:55 -0700 | [diff] [blame] | 1147 | static void set_multicast_list(struct net_device *dev) |
| 1148 | { |
| 1149 | struct el3_private *lp = netdev_priv(dev); |
| 1150 | unsigned long flags; |
| 1151 | |
| 1152 | spin_lock_irqsave(&lp->window_lock, flags); |
| 1153 | set_rx_mode(dev); |
| 1154 | spin_unlock_irqrestore(&lp->window_lock, flags); |
| 1155 | } |
| 1156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | static int el3_close(struct net_device *dev) |
| 1158 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 1159 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | struct el3_private *lp = netdev_priv(dev); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 1161 | struct pcmcia_device *link = lp->p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | |
Dominik Brodowski | dd0fab5 | 2009-10-24 15:51:05 +0200 | [diff] [blame] | 1163 | dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | |
Dominik Brodowski | 9940ec3 | 2006-03-05 11:04:33 +0100 | [diff] [blame] | 1165 | if (pcmcia_dev_present(link)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | unsigned long flags; |
| 1167 | |
| 1168 | /* Turn off statistics ASAP. We update lp->stats below. */ |
| 1169 | outw(StatsDisable, ioaddr + EL3_CMD); |
| 1170 | |
| 1171 | /* Disable the receiver and transmitter. */ |
| 1172 | outw(RxDisable, ioaddr + EL3_CMD); |
| 1173 | outw(TxDisable, ioaddr + EL3_CMD); |
| 1174 | |
| 1175 | /* Note: Switching to window 0 may disable the IRQ. */ |
| 1176 | EL3WINDOW(0); |
| 1177 | spin_lock_irqsave(&lp->window_lock, flags); |
| 1178 | update_stats(dev); |
| 1179 | spin_unlock_irqrestore(&lp->window_lock, flags); |
Daniel Ritz | b9a6eaf | 2005-04-10 20:27:45 +0200 | [diff] [blame] | 1180 | |
| 1181 | /* force interrupts off */ |
| 1182 | outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | } |
| 1184 | |
| 1185 | link->open--; |
| 1186 | netif_stop_queue(dev); |
| 1187 | del_timer_sync(&lp->media); |
| 1188 | |
| 1189 | return 0; |
| 1190 | } |
| 1191 | |
Dominik Brodowski | 270b6e9 | 2005-06-27 16:28:18 -0700 | [diff] [blame] | 1192 | static struct pcmcia_device_id tc574_ids[] = { |
| 1193 | PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574), |
Ken Kawasaki | f0a3a15 | 2009-05-01 19:21:26 -0700 | [diff] [blame] | 1194 | PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "cis/3CCFEM556.cis"), |
Dominik Brodowski | 270b6e9 | 2005-06-27 16:28:18 -0700 | [diff] [blame] | 1195 | PCMCIA_DEVICE_NULL, |
| 1196 | }; |
| 1197 | MODULE_DEVICE_TABLE(pcmcia, tc574_ids); |
| 1198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | static struct pcmcia_driver tc574_driver = { |
| 1200 | .owner = THIS_MODULE, |
| 1201 | .drv = { |
| 1202 | .name = "3c574_cs", |
| 1203 | }, |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 1204 | .probe = tc574_probe, |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 1205 | .remove = tc574_detach, |
Dominik Brodowski | 270b6e9 | 2005-06-27 16:28:18 -0700 | [diff] [blame] | 1206 | .id_table = tc574_ids, |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 1207 | .suspend = tc574_suspend, |
| 1208 | .resume = tc574_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | }; |
| 1210 | |
| 1211 | static int __init init_tc574(void) |
| 1212 | { |
| 1213 | return pcmcia_register_driver(&tc574_driver); |
| 1214 | } |
| 1215 | |
| 1216 | static void __exit exit_tc574(void) |
| 1217 | { |
| 1218 | pcmcia_unregister_driver(&tc574_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | } |
| 1220 | |
| 1221 | module_init(init_tc574); |
| 1222 | module_exit(exit_tc574); |