| 1 | /* |
| 2 | Written 1997-1998 by Donald Becker. |
| 3 | |
| 4 | This software may be used and distributed according to the terms |
| 5 | of the GNU General Public License, incorporated herein by reference. |
| 6 | |
| 7 | This driver is for the 3Com ISA EtherLink XL "Corkscrew" 3c515 ethercard. |
| 8 | |
| 9 | The author may be reached as becker@scyld.com, or C/O |
| 10 | Scyld Computing Corporation |
| 11 | 410 Severn Ave., Suite 210 |
| 12 | Annapolis MD 21403 |
| 13 | |
| 14 | |
| 15 | 2000/2/2- Added support for kernel-level ISAPnP |
| 16 | by Stephen Frost <sfrost@snowman.net> and Alessandro Zummo |
| 17 | Cleaned up for 2.3.x/softnet by Jeff Garzik and Alan Cox. |
| 18 | |
| 19 | 2001/11/17 - Added ethtool support (jgarzik) |
| 20 | |
| 21 | 2002/10/28 - Locking updates for 2.5 (alan@lxorguk.ukuu.org.uk) |
| 22 | |
| 23 | */ |
| 24 | |
| 25 | #define DRV_NAME "3c515" |
| 26 | #define DRV_VERSION "0.99t-ac" |
| 27 | #define DRV_RELDATE "28-Oct-2002" |
| 28 | |
| 29 | static char *version = |
| 30 | DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " becker@scyld.com and others\n"; |
| 31 | |
| 32 | #define CORKSCREW 1 |
| 33 | |
| 34 | /* "Knobs" that adjust features and parameters. */ |
| 35 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. |
| 36 | Setting to > 1512 effectively disables this feature. */ |
| 37 | static int rx_copybreak = 200; |
| 38 | |
| 39 | /* Allow setting MTU to a larger size, bypassing the normal ethernet setup. */ |
| 40 | static const int mtu = 1500; |
| 41 | |
| 42 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ |
| 43 | static int max_interrupt_work = 20; |
| 44 | |
| 45 | /* Enable the automatic media selection code -- usually set. */ |
| 46 | #define AUTOMEDIA 1 |
| 47 | |
| 48 | /* Allow the use of fragment bus master transfers instead of only |
| 49 | programmed-I/O for Vortex cards. Full-bus-master transfers are always |
| 50 | enabled by default on Boomerang cards. If VORTEX_BUS_MASTER is defined, |
| 51 | the feature may be turned on using 'options'. */ |
| 52 | #define VORTEX_BUS_MASTER |
| 53 | |
| 54 | /* A few values that may be tweaked. */ |
| 55 | /* Keep the ring sizes a power of two for efficiency. */ |
| 56 | #define TX_RING_SIZE 16 |
| 57 | #define RX_RING_SIZE 16 |
| 58 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */ |
| 59 | |
| 60 | #include <linux/module.h> |
| 61 | #include <linux/isapnp.h> |
| 62 | #include <linux/kernel.h> |
| 63 | #include <linux/netdevice.h> |
| 64 | #include <linux/string.h> |
| 65 | #include <linux/errno.h> |
| 66 | #include <linux/in.h> |
| 67 | #include <linux/ioport.h> |
| 68 | #include <linux/slab.h> |
| 69 | #include <linux/skbuff.h> |
| 70 | #include <linux/etherdevice.h> |
| 71 | #include <linux/interrupt.h> |
| 72 | #include <linux/timer.h> |
| 73 | #include <linux/ethtool.h> |
| 74 | #include <linux/bitops.h> |
| 75 | |
| 76 | #include <asm/uaccess.h> |
| 77 | #include <asm/io.h> |
| 78 | #include <asm/dma.h> |
| 79 | |
| 80 | #define NEW_MULTICAST |
| 81 | #include <linux/delay.h> |
| 82 | |
| 83 | #define MAX_UNITS 8 |
| 84 | |
| 85 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); |
| 86 | MODULE_DESCRIPTION("3Com 3c515 Corkscrew driver"); |
| 87 | MODULE_LICENSE("GPL"); |
| 88 | MODULE_VERSION(DRV_VERSION); |
| 89 | |
| 90 | /* "Knobs" for adjusting internal parameters. */ |
| 91 | /* Put out somewhat more debugging messages. (0 - no msg, 1 minimal msgs). */ |
| 92 | #define DRIVER_DEBUG 1 |
| 93 | /* Some values here only for performance evaluation and path-coverage |
| 94 | debugging. */ |
| 95 | static int rx_nocopy, rx_copy, queued_packet; |
| 96 | |
| 97 | /* Number of times to check to see if the Tx FIFO has space, used in some |
| 98 | limited cases. */ |
| 99 | #define WAIT_TX_AVAIL 200 |
| 100 | |
| 101 | /* Operational parameter that usually are not changed. */ |
| 102 | #define TX_TIMEOUT 40 /* Time in jiffies before concluding Tx hung */ |
| 103 | |
| 104 | /* The size here is somewhat misleading: the Corkscrew also uses the ISA |
| 105 | aliased registers at <base>+0x400. |
| 106 | */ |
| 107 | #define CORKSCREW_TOTAL_SIZE 0x20 |
| 108 | |
| 109 | #ifdef DRIVER_DEBUG |
| 110 | static int corkscrew_debug = DRIVER_DEBUG; |
| 111 | #else |
| 112 | static int corkscrew_debug = 1; |
| 113 | #endif |
| 114 | |
| 115 | #define CORKSCREW_ID 10 |
| 116 | |
| 117 | /* |
| 118 | Theory of Operation |
| 119 | |
| 120 | I. Board Compatibility |
| 121 | |
| 122 | This device driver is designed for the 3Com 3c515 ISA Fast EtherLink XL, |
| 123 | 3Com's ISA bus adapter for Fast Ethernet. Due to the unique I/O port layout, |
| 124 | it's not practical to integrate this driver with the other EtherLink drivers. |
| 125 | |
| 126 | II. Board-specific settings |
| 127 | |
| 128 | The Corkscrew has an EEPROM for configuration, but no special settings are |
| 129 | needed for Linux. |
| 130 | |
| 131 | III. Driver operation |
| 132 | |
| 133 | The 3c515 series use an interface that's very similar to the 3c900 "Boomerang" |
| 134 | PCI cards, with the bus master interface extensively modified to work with |
| 135 | the ISA bus. |
| 136 | |
| 137 | The card is capable of full-bus-master transfers with separate |
| 138 | lists of transmit and receive descriptors, similar to the AMD LANCE/PCnet, |
| 139 | DEC Tulip and Intel Speedo3. |
| 140 | |
| 141 | This driver uses a "RX_COPYBREAK" scheme rather than a fixed intermediate |
| 142 | receive buffer. This scheme allocates full-sized skbuffs as receive |
| 143 | buffers. The value RX_COPYBREAK is used as the copying breakpoint: it is |
| 144 | chosen to trade-off the memory wasted by passing the full-sized skbuff to |
| 145 | the queue layer for all frames vs. the copying cost of copying a frame to a |
| 146 | correctly-sized skbuff. |
| 147 | |
| 148 | |
| 149 | IIIC. Synchronization |
| 150 | The driver runs as two independent, single-threaded flows of control. One |
| 151 | is the send-packet routine, which enforces single-threaded use by the netif |
| 152 | layer. The other thread is the interrupt handler, which is single |
| 153 | threaded by the hardware and other software. |
| 154 | |
| 155 | IV. Notes |
| 156 | |
| 157 | Thanks to Terry Murphy of 3Com for providing documentation and a development |
| 158 | board. |
| 159 | |
| 160 | The names "Vortex", "Boomerang" and "Corkscrew" are the internal 3Com |
| 161 | project names. I use these names to eliminate confusion -- 3Com product |
| 162 | numbers and names are very similar and often confused. |
| 163 | |
| 164 | The new chips support both ethernet (1.5K) and FDDI (4.5K) frame sizes! |
| 165 | This driver only supports ethernet frames because of the recent MTU limit |
| 166 | of 1.5K, but the changes to support 4.5K are minimal. |
| 167 | */ |
| 168 | |
| 169 | /* Operational definitions. |
| 170 | These are not used by other compilation units and thus are not |
| 171 | exported in a ".h" file. |
| 172 | |
| 173 | First the windows. There are eight register windows, with the command |
| 174 | and status registers available in each. |
| 175 | */ |
| 176 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) |
| 177 | #define EL3_CMD 0x0e |
| 178 | #define EL3_STATUS 0x0e |
| 179 | |
| 180 | /* The top five bits written to EL3_CMD are a command, the lower |
| 181 | 11 bits are the parameter, if applicable. |
| 182 | Note that 11 parameters bits was fine for ethernet, but the new chips |
| 183 | can handle FDDI length frames (~4500 octets) and now parameters count |
| 184 | 32-bit 'Dwords' rather than octets. */ |
| 185 | |
| 186 | enum corkscrew_cmd { |
| 187 | TotalReset = 0 << 11, SelectWindow = 1 << 11, StartCoax = 2 << 11, |
| 188 | RxDisable = 3 << 11, RxEnable = 4 << 11, RxReset = 5 << 11, |
| 189 | UpStall = 6 << 11, UpUnstall = (6 << 11) + 1, DownStall = (6 << 11) + 2, |
| 190 | DownUnstall = (6 << 11) + 3, RxDiscard = 8 << 11, TxEnable = 9 << 11, |
| 191 | TxDisable = 10 << 11, TxReset = 11 << 11, FakeIntr = 12 << 11, |
| 192 | AckIntr = 13 << 11, SetIntrEnb = 14 << 11, SetStatusEnb = 15 << 11, |
| 193 | SetRxFilter = 16 << 11, SetRxThreshold = 17 << 11, |
| 194 | SetTxThreshold = 18 << 11, SetTxStart = 19 << 11, StartDMAUp = 20 << 11, |
| 195 | StartDMADown = (20 << 11) + 1, StatsEnable = 21 << 11, |
| 196 | StatsDisable = 22 << 11, StopCoax = 23 << 11, |
| 197 | }; |
| 198 | |
| 199 | /* The SetRxFilter command accepts the following classes: */ |
| 200 | enum RxFilter { |
| 201 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 |
| 202 | }; |
| 203 | |
| 204 | /* Bits in the general status register. */ |
| 205 | enum corkscrew_status { |
| 206 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, |
| 207 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, |
| 208 | IntReq = 0x0040, StatsFull = 0x0080, |
| 209 | DMADone = 1 << 8, DownComplete = 1 << 9, UpComplete = 1 << 10, |
| 210 | DMAInProgress = 1 << 11, /* DMA controller is still busy. */ |
| 211 | CmdInProgress = 1 << 12, /* EL3_CMD is still busy. */ |
| 212 | }; |
| 213 | |
| 214 | /* Register window 1 offsets, the window used in normal operation. |
| 215 | On the Corkscrew this window is always mapped at offsets 0x10-0x1f. */ |
| 216 | enum Window1 { |
| 217 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, |
| 218 | RxStatus = 0x18, Timer = 0x1A, TxStatus = 0x1B, |
| 219 | TxFree = 0x1C, /* Remaining free bytes in Tx buffer. */ |
| 220 | }; |
| 221 | enum Window0 { |
| 222 | Wn0IRQ = 0x08, |
| 223 | #if defined(CORKSCREW) |
| 224 | Wn0EepromCmd = 0x200A, /* Corkscrew EEPROM command register. */ |
| 225 | Wn0EepromData = 0x200C, /* Corkscrew EEPROM results register. */ |
| 226 | #else |
| 227 | Wn0EepromCmd = 10, /* Window 0: EEPROM command register. */ |
| 228 | Wn0EepromData = 12, /* Window 0: EEPROM results register. */ |
| 229 | #endif |
| 230 | }; |
| 231 | enum Win0_EEPROM_bits { |
| 232 | EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0, |
| 233 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ |
| 234 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ |
| 235 | }; |
| 236 | |
| 237 | /* EEPROM locations. */ |
| 238 | enum eeprom_offset { |
| 239 | PhysAddr01 = 0, PhysAddr23 = 1, PhysAddr45 = 2, ModelID = 3, |
| 240 | EtherLink3ID = 7, |
| 241 | }; |
| 242 | |
| 243 | enum Window3 { /* Window 3: MAC/config bits. */ |
| 244 | Wn3_Config = 0, Wn3_MAC_Ctrl = 6, Wn3_Options = 8, |
| 245 | }; |
| 246 | enum wn3_config { |
| 247 | Ram_size = 7, |
| 248 | Ram_width = 8, |
| 249 | Ram_speed = 0x30, |
| 250 | Rom_size = 0xc0, |
| 251 | Ram_split_shift = 16, |
| 252 | Ram_split = 3 << Ram_split_shift, |
| 253 | Xcvr_shift = 20, |
| 254 | Xcvr = 7 << Xcvr_shift, |
| 255 | Autoselect = 0x1000000, |
| 256 | }; |
| 257 | |
| 258 | enum Window4 { |
| 259 | Wn4_NetDiag = 6, Wn4_Media = 10, /* Window 4: Xcvr/media bits. */ |
| 260 | }; |
| 261 | enum Win4_Media_bits { |
| 262 | Media_SQE = 0x0008, /* Enable SQE error counting for AUI. */ |
| 263 | Media_10TP = 0x00C0, /* Enable link beat and jabber for 10baseT. */ |
| 264 | Media_Lnk = 0x0080, /* Enable just link beat for 100TX/100FX. */ |
| 265 | Media_LnkBeat = 0x0800, |
| 266 | }; |
| 267 | enum Window7 { /* Window 7: Bus Master control. */ |
| 268 | Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12, |
| 269 | }; |
| 270 | |
| 271 | /* Boomerang-style bus master control registers. Note ISA aliases! */ |
| 272 | enum MasterCtrl { |
| 273 | PktStatus = 0x400, DownListPtr = 0x404, FragAddr = 0x408, FragLen = |
| 274 | 0x40c, |
| 275 | TxFreeThreshold = 0x40f, UpPktStatus = 0x410, UpListPtr = 0x418, |
| 276 | }; |
| 277 | |
| 278 | /* The Rx and Tx descriptor lists. |
| 279 | Caution Alpha hackers: these types are 32 bits! Note also the 8 byte |
| 280 | alignment contraint on tx_ring[] and rx_ring[]. */ |
| 281 | struct boom_rx_desc { |
| 282 | u32 next; |
| 283 | s32 status; |
| 284 | u32 addr; |
| 285 | s32 length; |
| 286 | }; |
| 287 | |
| 288 | /* Values for the Rx status entry. */ |
| 289 | enum rx_desc_status { |
| 290 | RxDComplete = 0x00008000, RxDError = 0x4000, |
| 291 | /* See boomerang_rx() for actual error bits */ |
| 292 | }; |
| 293 | |
| 294 | struct boom_tx_desc { |
| 295 | u32 next; |
| 296 | s32 status; |
| 297 | u32 addr; |
| 298 | s32 length; |
| 299 | }; |
| 300 | |
| 301 | struct corkscrew_private { |
| 302 | const char *product_name; |
| 303 | struct list_head list; |
| 304 | struct net_device *our_dev; |
| 305 | /* The Rx and Tx rings are here to keep them quad-word-aligned. */ |
| 306 | struct boom_rx_desc rx_ring[RX_RING_SIZE]; |
| 307 | struct boom_tx_desc tx_ring[TX_RING_SIZE]; |
| 308 | /* The addresses of transmit- and receive-in-place skbuffs. */ |
| 309 | struct sk_buff *rx_skbuff[RX_RING_SIZE]; |
| 310 | struct sk_buff *tx_skbuff[TX_RING_SIZE]; |
| 311 | unsigned int cur_rx, cur_tx; /* The next free ring entry */ |
| 312 | unsigned int dirty_rx, dirty_tx;/* The ring entries to be free()ed. */ |
| 313 | struct sk_buff *tx_skb; /* Packet being eaten by bus master ctrl. */ |
| 314 | struct timer_list timer; /* Media selection timer. */ |
| 315 | int capabilities ; /* Adapter capabilities word. */ |
| 316 | int options; /* User-settable misc. driver options. */ |
| 317 | int last_rx_packets; /* For media autoselection. */ |
| 318 | unsigned int available_media:8, /* From Wn3_Options */ |
| 319 | media_override:3, /* Passed-in media type. */ |
| 320 | default_media:3, /* Read from the EEPROM. */ |
| 321 | full_duplex:1, autoselect:1, bus_master:1, /* Vortex can only do a fragment bus-m. */ |
| 322 | full_bus_master_tx:1, full_bus_master_rx:1, /* Boomerang */ |
| 323 | tx_full:1; |
| 324 | spinlock_t lock; |
| 325 | struct device *dev; |
| 326 | }; |
| 327 | |
| 328 | /* The action to take with a media selection timer tick. |
| 329 | Note that we deviate from the 3Com order by checking 10base2 before AUI. |
| 330 | */ |
| 331 | enum xcvr_types { |
| 332 | XCVR_10baseT = 0, XCVR_AUI, XCVR_10baseTOnly, XCVR_10base2, XCVR_100baseTx, |
| 333 | XCVR_100baseFx, XCVR_MII = 6, XCVR_Default = 8, |
| 334 | }; |
| 335 | |
| 336 | static struct media_table { |
| 337 | char *name; |
| 338 | unsigned int media_bits:16, /* Bits to set in Wn4_Media register. */ |
| 339 | mask:8, /* The transceiver-present bit in Wn3_Config. */ |
| 340 | next:8; /* The media type to try next. */ |
| 341 | short wait; /* Time before we check media status. */ |
| 342 | } media_tbl[] = { |
| 343 | { "10baseT", Media_10TP, 0x08, XCVR_10base2, (14 * HZ) / 10 }, |
| 344 | { "10Mbs AUI", Media_SQE, 0x20, XCVR_Default, (1 * HZ) / 10}, |
| 345 | { "undefined", 0, 0x80, XCVR_10baseT, 10000}, |
| 346 | { "10base2", 0, 0x10, XCVR_AUI, (1 * HZ) / 10}, |
| 347 | { "100baseTX", Media_Lnk, 0x02, XCVR_100baseFx, (14 * HZ) / 10}, |
| 348 | { "100baseFX", Media_Lnk, 0x04, XCVR_MII, (14 * HZ) / 10}, |
| 349 | { "MII", 0, 0x40, XCVR_10baseT, 3 * HZ}, |
| 350 | { "undefined", 0, 0x01, XCVR_10baseT, 10000}, |
| 351 | { "Default", 0, 0xFF, XCVR_10baseT, 10000}, |
| 352 | }; |
| 353 | |
| 354 | #ifdef __ISAPNP__ |
| 355 | static struct isapnp_device_id corkscrew_isapnp_adapters[] = { |
| 356 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
| 357 | ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5051), |
| 358 | (long) "3Com Fast EtherLink ISA" }, |
| 359 | { } /* terminate list */ |
| 360 | }; |
| 361 | |
| 362 | MODULE_DEVICE_TABLE(isapnp, corkscrew_isapnp_adapters); |
| 363 | |
| 364 | static int nopnp; |
| 365 | #endif /* __ISAPNP__ */ |
| 366 | |
| 367 | static struct net_device *corkscrew_scan(int unit); |
| 368 | static int corkscrew_setup(struct net_device *dev, int ioaddr, |
| 369 | struct pnp_dev *idev, int card_number); |
| 370 | static int corkscrew_open(struct net_device *dev); |
| 371 | static void corkscrew_timer(unsigned long arg); |
| 372 | static netdev_tx_t corkscrew_start_xmit(struct sk_buff *skb, |
| 373 | struct net_device *dev); |
| 374 | static int corkscrew_rx(struct net_device *dev); |
| 375 | static void corkscrew_timeout(struct net_device *dev); |
| 376 | static int boomerang_rx(struct net_device *dev); |
| 377 | static irqreturn_t corkscrew_interrupt(int irq, void *dev_id); |
| 378 | static int corkscrew_close(struct net_device *dev); |
| 379 | static void update_stats(int addr, struct net_device *dev); |
| 380 | static struct net_device_stats *corkscrew_get_stats(struct net_device *dev); |
| 381 | static void set_rx_mode(struct net_device *dev); |
| 382 | static const struct ethtool_ops netdev_ethtool_ops; |
| 383 | |
| 384 | |
| 385 | /* |
| 386 | Unfortunately maximizing the shared code between the integrated and |
| 387 | module version of the driver results in a complicated set of initialization |
| 388 | procedures. |
| 389 | init_module() -- modules / tc59x_init() -- built-in |
| 390 | The wrappers for corkscrew_scan() |
| 391 | corkscrew_scan() The common routine that scans for PCI and EISA cards |
| 392 | corkscrew_found_device() Allocate a device structure when we find a card. |
| 393 | Different versions exist for modules and built-in. |
| 394 | corkscrew_probe1() Fill in the device structure -- this is separated |
| 395 | so that the modules code can put it in dev->init. |
| 396 | */ |
| 397 | /* This driver uses 'options' to pass the media type, full-duplex flag, etc. */ |
| 398 | /* Note: this is the only limit on the number of cards supported!! */ |
| 399 | static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1, }; |
| 400 | |
| 401 | #ifdef MODULE |
| 402 | static int debug = -1; |
| 403 | |
| 404 | module_param(debug, int, 0); |
| 405 | module_param_array(options, int, NULL, 0); |
| 406 | module_param(rx_copybreak, int, 0); |
| 407 | module_param(max_interrupt_work, int, 0); |
| 408 | MODULE_PARM_DESC(debug, "3c515 debug level (0-6)"); |
| 409 | MODULE_PARM_DESC(options, "3c515: Bits 0-2: media type, bit 3: full duplex, bit 4: bus mastering"); |
| 410 | MODULE_PARM_DESC(rx_copybreak, "3c515 copy breakpoint for copy-only-tiny-frames"); |
| 411 | MODULE_PARM_DESC(max_interrupt_work, "3c515 maximum events handled per interrupt"); |
| 412 | |
| 413 | /* A list of all installed Vortex devices, for removing the driver module. */ |
| 414 | /* we will need locking (and refcounting) if we ever use it for more */ |
| 415 | static LIST_HEAD(root_corkscrew_dev); |
| 416 | |
| 417 | int init_module(void) |
| 418 | { |
| 419 | int found = 0; |
| 420 | if (debug >= 0) |
| 421 | corkscrew_debug = debug; |
| 422 | if (corkscrew_debug) |
| 423 | pr_debug("%s", version); |
| 424 | while (corkscrew_scan(-1)) |
| 425 | found++; |
| 426 | return found ? 0 : -ENODEV; |
| 427 | } |
| 428 | |
| 429 | #else |
| 430 | struct net_device *tc515_probe(int unit) |
| 431 | { |
| 432 | struct net_device *dev = corkscrew_scan(unit); |
| 433 | static int printed; |
| 434 | |
| 435 | if (!dev) |
| 436 | return ERR_PTR(-ENODEV); |
| 437 | |
| 438 | if (corkscrew_debug > 0 && !printed) { |
| 439 | printed = 1; |
| 440 | pr_debug("%s", version); |
| 441 | } |
| 442 | |
| 443 | return dev; |
| 444 | } |
| 445 | #endif /* not MODULE */ |
| 446 | |
| 447 | static int check_device(unsigned ioaddr) |
| 448 | { |
| 449 | int timer; |
| 450 | |
| 451 | if (!request_region(ioaddr, CORKSCREW_TOTAL_SIZE, "3c515")) |
| 452 | return 0; |
| 453 | /* Check the resource configuration for a matching ioaddr. */ |
| 454 | if ((inw(ioaddr + 0x2002) & 0x1f0) != (ioaddr & 0x1f0)) { |
| 455 | release_region(ioaddr, CORKSCREW_TOTAL_SIZE); |
| 456 | return 0; |
| 457 | } |
| 458 | /* Verify by reading the device ID from the EEPROM. */ |
| 459 | outw(EEPROM_Read + 7, ioaddr + Wn0EepromCmd); |
| 460 | /* Pause for at least 162 us. for the read to take place. */ |
| 461 | for (timer = 4; timer >= 0; timer--) { |
| 462 | udelay(162); |
| 463 | if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0) |
| 464 | break; |
| 465 | } |
| 466 | if (inw(ioaddr + Wn0EepromData) != 0x6d50) { |
| 467 | release_region(ioaddr, CORKSCREW_TOTAL_SIZE); |
| 468 | return 0; |
| 469 | } |
| 470 | return 1; |
| 471 | } |
| 472 | |
| 473 | static void cleanup_card(struct net_device *dev) |
| 474 | { |
| 475 | struct corkscrew_private *vp = netdev_priv(dev); |
| 476 | list_del_init(&vp->list); |
| 477 | if (dev->dma) |
| 478 | free_dma(dev->dma); |
| 479 | outw(TotalReset, dev->base_addr + EL3_CMD); |
| 480 | release_region(dev->base_addr, CORKSCREW_TOTAL_SIZE); |
| 481 | if (vp->dev) |
| 482 | pnp_device_detach(to_pnp_dev(vp->dev)); |
| 483 | } |
| 484 | |
| 485 | static struct net_device *corkscrew_scan(int unit) |
| 486 | { |
| 487 | struct net_device *dev; |
| 488 | static int cards_found = 0; |
| 489 | static int ioaddr; |
| 490 | int err; |
| 491 | #ifdef __ISAPNP__ |
| 492 | short i; |
| 493 | static int pnp_cards; |
| 494 | #endif |
| 495 | |
| 496 | dev = alloc_etherdev(sizeof(struct corkscrew_private)); |
| 497 | if (!dev) |
| 498 | return ERR_PTR(-ENOMEM); |
| 499 | |
| 500 | if (unit >= 0) { |
| 501 | sprintf(dev->name, "eth%d", unit); |
| 502 | netdev_boot_setup_check(dev); |
| 503 | } |
| 504 | |
| 505 | #ifdef __ISAPNP__ |
| 506 | if(nopnp == 1) |
| 507 | goto no_pnp; |
| 508 | for(i=0; corkscrew_isapnp_adapters[i].vendor != 0; i++) { |
| 509 | struct pnp_dev *idev = NULL; |
| 510 | int irq; |
| 511 | while((idev = pnp_find_dev(NULL, |
| 512 | corkscrew_isapnp_adapters[i].vendor, |
| 513 | corkscrew_isapnp_adapters[i].function, |
| 514 | idev))) { |
| 515 | |
| 516 | if (pnp_device_attach(idev) < 0) |
| 517 | continue; |
| 518 | if (pnp_activate_dev(idev) < 0) { |
| 519 | pr_warning("pnp activate failed (out of resources?)\n"); |
| 520 | pnp_device_detach(idev); |
| 521 | continue; |
| 522 | } |
| 523 | if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) { |
| 524 | pnp_device_detach(idev); |
| 525 | continue; |
| 526 | } |
| 527 | ioaddr = pnp_port_start(idev, 0); |
| 528 | irq = pnp_irq(idev, 0); |
| 529 | if (!check_device(ioaddr)) { |
| 530 | pnp_device_detach(idev); |
| 531 | continue; |
| 532 | } |
| 533 | if(corkscrew_debug) |
| 534 | pr_debug("ISAPNP reports %s at i/o 0x%x, irq %d\n", |
| 535 | (char*) corkscrew_isapnp_adapters[i].driver_data, ioaddr, irq); |
| 536 | pr_info("3c515 Resource configuration register %#4.4x, DCR %4.4x.\n", |
| 537 | inl(ioaddr + 0x2002), inw(ioaddr + 0x2000)); |
| 538 | /* irq = inw(ioaddr + 0x2002) & 15; */ /* Use the irq from isapnp */ |
| 539 | SET_NETDEV_DEV(dev, &idev->dev); |
| 540 | pnp_cards++; |
| 541 | err = corkscrew_setup(dev, ioaddr, idev, cards_found++); |
| 542 | if (!err) |
| 543 | return dev; |
| 544 | cleanup_card(dev); |
| 545 | } |
| 546 | } |
| 547 | no_pnp: |
| 548 | #endif /* __ISAPNP__ */ |
| 549 | |
| 550 | /* Check all locations on the ISA bus -- evil! */ |
| 551 | for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x20) { |
| 552 | if (!check_device(ioaddr)) |
| 553 | continue; |
| 554 | |
| 555 | pr_info("3c515 Resource configuration register %#4.4x, DCR %4.4x.\n", |
| 556 | inl(ioaddr + 0x2002), inw(ioaddr + 0x2000)); |
| 557 | err = corkscrew_setup(dev, ioaddr, NULL, cards_found++); |
| 558 | if (!err) |
| 559 | return dev; |
| 560 | cleanup_card(dev); |
| 561 | } |
| 562 | free_netdev(dev); |
| 563 | return NULL; |
| 564 | } |
| 565 | |
| 566 | |
| 567 | static const struct net_device_ops netdev_ops = { |
| 568 | .ndo_open = corkscrew_open, |
| 569 | .ndo_stop = corkscrew_close, |
| 570 | .ndo_start_xmit = corkscrew_start_xmit, |
| 571 | .ndo_tx_timeout = corkscrew_timeout, |
| 572 | .ndo_get_stats = corkscrew_get_stats, |
| 573 | .ndo_set_multicast_list = set_rx_mode, |
| 574 | .ndo_change_mtu = eth_change_mtu, |
| 575 | .ndo_set_mac_address = eth_mac_addr, |
| 576 | .ndo_validate_addr = eth_validate_addr, |
| 577 | }; |
| 578 | |
| 579 | |
| 580 | static int corkscrew_setup(struct net_device *dev, int ioaddr, |
| 581 | struct pnp_dev *idev, int card_number) |
| 582 | { |
| 583 | struct corkscrew_private *vp = netdev_priv(dev); |
| 584 | unsigned int eeprom[0x40], checksum = 0; /* EEPROM contents */ |
| 585 | int i; |
| 586 | int irq; |
| 587 | |
| 588 | #ifdef __ISAPNP__ |
| 589 | if (idev) { |
| 590 | irq = pnp_irq(idev, 0); |
| 591 | vp->dev = &idev->dev; |
| 592 | } else { |
| 593 | irq = inw(ioaddr + 0x2002) & 15; |
| 594 | } |
| 595 | #else |
| 596 | irq = inw(ioaddr + 0x2002) & 15; |
| 597 | #endif |
| 598 | |
| 599 | dev->base_addr = ioaddr; |
| 600 | dev->irq = irq; |
| 601 | dev->dma = inw(ioaddr + 0x2000) & 7; |
| 602 | vp->product_name = "3c515"; |
| 603 | vp->options = dev->mem_start; |
| 604 | vp->our_dev = dev; |
| 605 | |
| 606 | if (!vp->options) { |
| 607 | if (card_number >= MAX_UNITS) |
| 608 | vp->options = -1; |
| 609 | else |
| 610 | vp->options = options[card_number]; |
| 611 | } |
| 612 | |
| 613 | if (vp->options >= 0) { |
| 614 | vp->media_override = vp->options & 7; |
| 615 | if (vp->media_override == 2) |
| 616 | vp->media_override = 0; |
| 617 | vp->full_duplex = (vp->options & 8) ? 1 : 0; |
| 618 | vp->bus_master = (vp->options & 16) ? 1 : 0; |
| 619 | } else { |
| 620 | vp->media_override = 7; |
| 621 | vp->full_duplex = 0; |
| 622 | vp->bus_master = 0; |
| 623 | } |
| 624 | #ifdef MODULE |
| 625 | list_add(&vp->list, &root_corkscrew_dev); |
| 626 | #endif |
| 627 | |
| 628 | pr_info("%s: 3Com %s at %#3x,", dev->name, vp->product_name, ioaddr); |
| 629 | |
| 630 | spin_lock_init(&vp->lock); |
| 631 | |
| 632 | /* Read the station address from the EEPROM. */ |
| 633 | EL3WINDOW(0); |
| 634 | for (i = 0; i < 0x18; i++) { |
| 635 | __be16 *phys_addr = (__be16 *) dev->dev_addr; |
| 636 | int timer; |
| 637 | outw(EEPROM_Read + i, ioaddr + Wn0EepromCmd); |
| 638 | /* Pause for at least 162 us. for the read to take place. */ |
| 639 | for (timer = 4; timer >= 0; timer--) { |
| 640 | udelay(162); |
| 641 | if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0) |
| 642 | break; |
| 643 | } |
| 644 | eeprom[i] = inw(ioaddr + Wn0EepromData); |
| 645 | checksum ^= eeprom[i]; |
| 646 | if (i < 3) |
| 647 | phys_addr[i] = htons(eeprom[i]); |
| 648 | } |
| 649 | checksum = (checksum ^ (checksum >> 8)) & 0xff; |
| 650 | if (checksum != 0x00) |
| 651 | pr_cont(" ***INVALID CHECKSUM %4.4x*** ", checksum); |
| 652 | pr_cont(" %pM", dev->dev_addr); |
| 653 | if (eeprom[16] == 0x11c7) { /* Corkscrew */ |
| 654 | if (request_dma(dev->dma, "3c515")) { |
| 655 | pr_cont(", DMA %d allocation failed", dev->dma); |
| 656 | dev->dma = 0; |
| 657 | } else |
| 658 | pr_cont(", DMA %d", dev->dma); |
| 659 | } |
| 660 | pr_cont(", IRQ %d\n", dev->irq); |
| 661 | /* Tell them about an invalid IRQ. */ |
| 662 | if (corkscrew_debug && (dev->irq <= 0 || dev->irq > 15)) |
| 663 | pr_warning(" *** Warning: this IRQ is unlikely to work! ***\n"); |
| 664 | |
| 665 | { |
| 666 | char *ram_split[] = { "5:3", "3:1", "1:1", "3:5" }; |
| 667 | __u32 config; |
| 668 | EL3WINDOW(3); |
| 669 | vp->available_media = inw(ioaddr + Wn3_Options); |
| 670 | config = inl(ioaddr + Wn3_Config); |
| 671 | if (corkscrew_debug > 1) |
| 672 | pr_info(" Internal config register is %4.4x, transceivers %#x.\n", |
| 673 | config, inw(ioaddr + Wn3_Options)); |
| 674 | pr_info(" %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n", |
| 675 | 8 << config & Ram_size, |
| 676 | config & Ram_width ? "word" : "byte", |
| 677 | ram_split[(config & Ram_split) >> Ram_split_shift], |
| 678 | config & Autoselect ? "autoselect/" : "", |
| 679 | media_tbl[(config & Xcvr) >> Xcvr_shift].name); |
| 680 | vp->default_media = (config & Xcvr) >> Xcvr_shift; |
| 681 | vp->autoselect = config & Autoselect ? 1 : 0; |
| 682 | dev->if_port = vp->default_media; |
| 683 | } |
| 684 | if (vp->media_override != 7) { |
| 685 | pr_info(" Media override to transceiver type %d (%s).\n", |
| 686 | vp->media_override, |
| 687 | media_tbl[vp->media_override].name); |
| 688 | dev->if_port = vp->media_override; |
| 689 | } |
| 690 | |
| 691 | vp->capabilities = eeprom[16]; |
| 692 | vp->full_bus_master_tx = (vp->capabilities & 0x20) ? 1 : 0; |
| 693 | /* Rx is broken at 10mbps, so we always disable it. */ |
| 694 | /* vp->full_bus_master_rx = 0; */ |
| 695 | vp->full_bus_master_rx = (vp->capabilities & 0x20) ? 1 : 0; |
| 696 | |
| 697 | /* The 3c51x-specific entries in the device structure. */ |
| 698 | dev->netdev_ops = &netdev_ops; |
| 699 | dev->watchdog_timeo = (400 * HZ) / 1000; |
| 700 | dev->ethtool_ops = &netdev_ethtool_ops; |
| 701 | |
| 702 | return register_netdev(dev); |
| 703 | } |
| 704 | |
| 705 | |
| 706 | static int corkscrew_open(struct net_device *dev) |
| 707 | { |
| 708 | int ioaddr = dev->base_addr; |
| 709 | struct corkscrew_private *vp = netdev_priv(dev); |
| 710 | __u32 config; |
| 711 | int i; |
| 712 | |
| 713 | /* Before initializing select the active media port. */ |
| 714 | EL3WINDOW(3); |
| 715 | if (vp->full_duplex) |
| 716 | outb(0x20, ioaddr + Wn3_MAC_Ctrl); /* Set the full-duplex bit. */ |
| 717 | config = inl(ioaddr + Wn3_Config); |
| 718 | |
| 719 | if (vp->media_override != 7) { |
| 720 | if (corkscrew_debug > 1) |
| 721 | pr_info("%s: Media override to transceiver %d (%s).\n", |
| 722 | dev->name, vp->media_override, |
| 723 | media_tbl[vp->media_override].name); |
| 724 | dev->if_port = vp->media_override; |
| 725 | } else if (vp->autoselect) { |
| 726 | /* Find first available media type, starting with 100baseTx. */ |
| 727 | dev->if_port = 4; |
| 728 | while (!(vp->available_media & media_tbl[dev->if_port].mask)) |
| 729 | dev->if_port = media_tbl[dev->if_port].next; |
| 730 | |
| 731 | if (corkscrew_debug > 1) |
| 732 | pr_debug("%s: Initial media type %s.\n", |
| 733 | dev->name, media_tbl[dev->if_port].name); |
| 734 | |
| 735 | init_timer(&vp->timer); |
| 736 | vp->timer.expires = jiffies + media_tbl[dev->if_port].wait; |
| 737 | vp->timer.data = (unsigned long) dev; |
| 738 | vp->timer.function = &corkscrew_timer; /* timer handler */ |
| 739 | add_timer(&vp->timer); |
| 740 | } else |
| 741 | dev->if_port = vp->default_media; |
| 742 | |
| 743 | config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift); |
| 744 | outl(config, ioaddr + Wn3_Config); |
| 745 | |
| 746 | if (corkscrew_debug > 1) { |
| 747 | pr_debug("%s: corkscrew_open() InternalConfig %8.8x.\n", |
| 748 | dev->name, config); |
| 749 | } |
| 750 | |
| 751 | outw(TxReset, ioaddr + EL3_CMD); |
| 752 | for (i = 20; i >= 0; i--) |
| 753 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) |
| 754 | break; |
| 755 | |
| 756 | outw(RxReset, ioaddr + EL3_CMD); |
| 757 | /* Wait a few ticks for the RxReset command to complete. */ |
| 758 | for (i = 20; i >= 0; i--) |
| 759 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) |
| 760 | break; |
| 761 | |
| 762 | outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD); |
| 763 | |
| 764 | /* Use the now-standard shared IRQ implementation. */ |
| 765 | if (vp->capabilities == 0x11c7) { |
| 766 | /* Corkscrew: Cannot share ISA resources. */ |
| 767 | if (dev->irq == 0 |
| 768 | || dev->dma == 0 |
| 769 | || request_irq(dev->irq, &corkscrew_interrupt, 0, |
| 770 | vp->product_name, dev)) return -EAGAIN; |
| 771 | enable_dma(dev->dma); |
| 772 | set_dma_mode(dev->dma, DMA_MODE_CASCADE); |
| 773 | } else if (request_irq(dev->irq, &corkscrew_interrupt, IRQF_SHARED, |
| 774 | vp->product_name, dev)) { |
| 775 | return -EAGAIN; |
| 776 | } |
| 777 | |
| 778 | if (corkscrew_debug > 1) { |
| 779 | EL3WINDOW(4); |
| 780 | pr_debug("%s: corkscrew_open() irq %d media status %4.4x.\n", |
| 781 | dev->name, dev->irq, inw(ioaddr + Wn4_Media)); |
| 782 | } |
| 783 | |
| 784 | /* Set the station address and mask in window 2 each time opened. */ |
| 785 | EL3WINDOW(2); |
| 786 | for (i = 0; i < 6; i++) |
| 787 | outb(dev->dev_addr[i], ioaddr + i); |
| 788 | for (; i < 12; i += 2) |
| 789 | outw(0, ioaddr + i); |
| 790 | |
| 791 | if (dev->if_port == 3) |
| 792 | /* Start the thinnet transceiver. We should really wait 50ms... */ |
| 793 | outw(StartCoax, ioaddr + EL3_CMD); |
| 794 | EL3WINDOW(4); |
| 795 | outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP | Media_SQE)) | |
| 796 | media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media); |
| 797 | |
| 798 | /* Switch to the stats window, and clear all stats by reading. */ |
| 799 | outw(StatsDisable, ioaddr + EL3_CMD); |
| 800 | EL3WINDOW(6); |
| 801 | for (i = 0; i < 10; i++) |
| 802 | inb(ioaddr + i); |
| 803 | inw(ioaddr + 10); |
| 804 | inw(ioaddr + 12); |
| 805 | /* New: On the Vortex we must also clear the BadSSD counter. */ |
| 806 | EL3WINDOW(4); |
| 807 | inb(ioaddr + 12); |
| 808 | /* ..and on the Boomerang we enable the extra statistics bits. */ |
| 809 | outw(0x0040, ioaddr + Wn4_NetDiag); |
| 810 | |
| 811 | /* Switch to register set 7 for normal use. */ |
| 812 | EL3WINDOW(7); |
| 813 | |
| 814 | if (vp->full_bus_master_rx) { /* Boomerang bus master. */ |
| 815 | vp->cur_rx = vp->dirty_rx = 0; |
| 816 | if (corkscrew_debug > 2) |
| 817 | pr_debug("%s: Filling in the Rx ring.\n", dev->name); |
| 818 | for (i = 0; i < RX_RING_SIZE; i++) { |
| 819 | struct sk_buff *skb; |
| 820 | if (i < (RX_RING_SIZE - 1)) |
| 821 | vp->rx_ring[i].next = |
| 822 | isa_virt_to_bus(&vp->rx_ring[i + 1]); |
| 823 | else |
| 824 | vp->rx_ring[i].next = 0; |
| 825 | vp->rx_ring[i].status = 0; /* Clear complete bit. */ |
| 826 | vp->rx_ring[i].length = PKT_BUF_SZ | 0x80000000; |
| 827 | skb = dev_alloc_skb(PKT_BUF_SZ); |
| 828 | vp->rx_skbuff[i] = skb; |
| 829 | if (skb == NULL) |
| 830 | break; /* Bad news! */ |
| 831 | skb->dev = dev; /* Mark as being used by this device. */ |
| 832 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
| 833 | vp->rx_ring[i].addr = isa_virt_to_bus(skb->data); |
| 834 | } |
| 835 | if (i != 0) |
| 836 | vp->rx_ring[i - 1].next = |
| 837 | isa_virt_to_bus(&vp->rx_ring[0]); /* Wrap the ring. */ |
| 838 | outl(isa_virt_to_bus(&vp->rx_ring[0]), ioaddr + UpListPtr); |
| 839 | } |
| 840 | if (vp->full_bus_master_tx) { /* Boomerang bus master Tx. */ |
| 841 | vp->cur_tx = vp->dirty_tx = 0; |
| 842 | outb(PKT_BUF_SZ >> 8, ioaddr + TxFreeThreshold); /* Room for a packet. */ |
| 843 | /* Clear the Tx ring. */ |
| 844 | for (i = 0; i < TX_RING_SIZE; i++) |
| 845 | vp->tx_skbuff[i] = NULL; |
| 846 | outl(0, ioaddr + DownListPtr); |
| 847 | } |
| 848 | /* Set receiver mode: presumably accept b-case and phys addr only. */ |
| 849 | set_rx_mode(dev); |
| 850 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ |
| 851 | |
| 852 | netif_start_queue(dev); |
| 853 | |
| 854 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ |
| 855 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ |
| 856 | /* Allow status bits to be seen. */ |
| 857 | outw(SetStatusEnb | AdapterFailure | IntReq | StatsFull | |
| 858 | (vp->full_bus_master_tx ? DownComplete : TxAvailable) | |
| 859 | (vp->full_bus_master_rx ? UpComplete : RxComplete) | |
| 860 | (vp->bus_master ? DMADone : 0), ioaddr + EL3_CMD); |
| 861 | /* Ack all pending events, and set active indicator mask. */ |
| 862 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, |
| 863 | ioaddr + EL3_CMD); |
| 864 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull |
| 865 | | (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete, |
| 866 | ioaddr + EL3_CMD); |
| 867 | |
| 868 | return 0; |
| 869 | } |
| 870 | |
| 871 | static void corkscrew_timer(unsigned long data) |
| 872 | { |
| 873 | #ifdef AUTOMEDIA |
| 874 | struct net_device *dev = (struct net_device *) data; |
| 875 | struct corkscrew_private *vp = netdev_priv(dev); |
| 876 | int ioaddr = dev->base_addr; |
| 877 | unsigned long flags; |
| 878 | int ok = 0; |
| 879 | |
| 880 | if (corkscrew_debug > 1) |
| 881 | pr_debug("%s: Media selection timer tick happened, %s.\n", |
| 882 | dev->name, media_tbl[dev->if_port].name); |
| 883 | |
| 884 | spin_lock_irqsave(&vp->lock, flags); |
| 885 | |
| 886 | { |
| 887 | int old_window = inw(ioaddr + EL3_CMD) >> 13; |
| 888 | int media_status; |
| 889 | EL3WINDOW(4); |
| 890 | media_status = inw(ioaddr + Wn4_Media); |
| 891 | switch (dev->if_port) { |
| 892 | case 0: |
| 893 | case 4: |
| 894 | case 5: /* 10baseT, 100baseTX, 100baseFX */ |
| 895 | if (media_status & Media_LnkBeat) { |
| 896 | ok = 1; |
| 897 | if (corkscrew_debug > 1) |
| 898 | pr_debug("%s: Media %s has link beat, %x.\n", |
| 899 | dev->name, |
| 900 | media_tbl[dev->if_port].name, |
| 901 | media_status); |
| 902 | } else if (corkscrew_debug > 1) |
| 903 | pr_debug("%s: Media %s is has no link beat, %x.\n", |
| 904 | dev->name, |
| 905 | media_tbl[dev->if_port].name, |
| 906 | media_status); |
| 907 | |
| 908 | break; |
| 909 | default: /* Other media types handled by Tx timeouts. */ |
| 910 | if (corkscrew_debug > 1) |
| 911 | pr_debug("%s: Media %s is has no indication, %x.\n", |
| 912 | dev->name, |
| 913 | media_tbl[dev->if_port].name, |
| 914 | media_status); |
| 915 | ok = 1; |
| 916 | } |
| 917 | if (!ok) { |
| 918 | __u32 config; |
| 919 | |
| 920 | do { |
| 921 | dev->if_port = |
| 922 | media_tbl[dev->if_port].next; |
| 923 | } |
| 924 | while (!(vp->available_media & media_tbl[dev->if_port].mask)); |
| 925 | |
| 926 | if (dev->if_port == 8) { /* Go back to default. */ |
| 927 | dev->if_port = vp->default_media; |
| 928 | if (corkscrew_debug > 1) |
| 929 | pr_debug("%s: Media selection failing, using default %s port.\n", |
| 930 | dev->name, |
| 931 | media_tbl[dev->if_port].name); |
| 932 | } else { |
| 933 | if (corkscrew_debug > 1) |
| 934 | pr_debug("%s: Media selection failed, now trying %s port.\n", |
| 935 | dev->name, |
| 936 | media_tbl[dev->if_port].name); |
| 937 | vp->timer.expires = jiffies + media_tbl[dev->if_port].wait; |
| 938 | add_timer(&vp->timer); |
| 939 | } |
| 940 | outw((media_status & ~(Media_10TP | Media_SQE)) | |
| 941 | media_tbl[dev->if_port].media_bits, |
| 942 | ioaddr + Wn4_Media); |
| 943 | |
| 944 | EL3WINDOW(3); |
| 945 | config = inl(ioaddr + Wn3_Config); |
| 946 | config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift); |
| 947 | outl(config, ioaddr + Wn3_Config); |
| 948 | |
| 949 | outw(dev->if_port == 3 ? StartCoax : StopCoax, |
| 950 | ioaddr + EL3_CMD); |
| 951 | } |
| 952 | EL3WINDOW(old_window); |
| 953 | } |
| 954 | |
| 955 | spin_unlock_irqrestore(&vp->lock, flags); |
| 956 | if (corkscrew_debug > 1) |
| 957 | pr_debug("%s: Media selection timer finished, %s.\n", |
| 958 | dev->name, media_tbl[dev->if_port].name); |
| 959 | |
| 960 | #endif /* AUTOMEDIA */ |
| 961 | return; |
| 962 | } |
| 963 | |
| 964 | static void corkscrew_timeout(struct net_device *dev) |
| 965 | { |
| 966 | int i; |
| 967 | struct corkscrew_private *vp = netdev_priv(dev); |
| 968 | int ioaddr = dev->base_addr; |
| 969 | |
| 970 | pr_warning("%s: transmit timed out, tx_status %2.2x status %4.4x.\n", |
| 971 | dev->name, inb(ioaddr + TxStatus), |
| 972 | inw(ioaddr + EL3_STATUS)); |
| 973 | /* Slight code bloat to be user friendly. */ |
| 974 | if ((inb(ioaddr + TxStatus) & 0x88) == 0x88) |
| 975 | pr_warning("%s: Transmitter encountered 16 collisions --" |
| 976 | " network cable problem?\n", dev->name); |
| 977 | #ifndef final_version |
| 978 | pr_debug(" Flags; bus-master %d, full %d; dirty %d current %d.\n", |
| 979 | vp->full_bus_master_tx, vp->tx_full, vp->dirty_tx, |
| 980 | vp->cur_tx); |
| 981 | pr_debug(" Down list %8.8x vs. %p.\n", inl(ioaddr + DownListPtr), |
| 982 | &vp->tx_ring[0]); |
| 983 | for (i = 0; i < TX_RING_SIZE; i++) { |
| 984 | pr_debug(" %d: %p length %8.8x status %8.8x\n", i, |
| 985 | &vp->tx_ring[i], |
| 986 | vp->tx_ring[i].length, vp->tx_ring[i].status); |
| 987 | } |
| 988 | #endif |
| 989 | /* Issue TX_RESET and TX_START commands. */ |
| 990 | outw(TxReset, ioaddr + EL3_CMD); |
| 991 | for (i = 20; i >= 0; i--) |
| 992 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) |
| 993 | break; |
| 994 | outw(TxEnable, ioaddr + EL3_CMD); |
| 995 | dev->trans_start = jiffies; |
| 996 | dev->stats.tx_errors++; |
| 997 | dev->stats.tx_dropped++; |
| 998 | netif_wake_queue(dev); |
| 999 | } |
| 1000 | |
| 1001 | static netdev_tx_t corkscrew_start_xmit(struct sk_buff *skb, |
| 1002 | struct net_device *dev) |
| 1003 | { |
| 1004 | struct corkscrew_private *vp = netdev_priv(dev); |
| 1005 | int ioaddr = dev->base_addr; |
| 1006 | |
| 1007 | /* Block a timer-based transmit from overlapping. */ |
| 1008 | |
| 1009 | netif_stop_queue(dev); |
| 1010 | |
| 1011 | if (vp->full_bus_master_tx) { /* BOOMERANG bus-master */ |
| 1012 | /* Calculate the next Tx descriptor entry. */ |
| 1013 | int entry = vp->cur_tx % TX_RING_SIZE; |
| 1014 | struct boom_tx_desc *prev_entry; |
| 1015 | unsigned long flags; |
| 1016 | int i; |
| 1017 | |
| 1018 | if (vp->tx_full) /* No room to transmit with */ |
| 1019 | return NETDEV_TX_BUSY; |
| 1020 | if (vp->cur_tx != 0) |
| 1021 | prev_entry = &vp->tx_ring[(vp->cur_tx - 1) % TX_RING_SIZE]; |
| 1022 | else |
| 1023 | prev_entry = NULL; |
| 1024 | if (corkscrew_debug > 3) |
| 1025 | pr_debug("%s: Trying to send a packet, Tx index %d.\n", |
| 1026 | dev->name, vp->cur_tx); |
| 1027 | /* vp->tx_full = 1; */ |
| 1028 | vp->tx_skbuff[entry] = skb; |
| 1029 | vp->tx_ring[entry].next = 0; |
| 1030 | vp->tx_ring[entry].addr = isa_virt_to_bus(skb->data); |
| 1031 | vp->tx_ring[entry].length = skb->len | 0x80000000; |
| 1032 | vp->tx_ring[entry].status = skb->len | 0x80000000; |
| 1033 | |
| 1034 | spin_lock_irqsave(&vp->lock, flags); |
| 1035 | outw(DownStall, ioaddr + EL3_CMD); |
| 1036 | /* Wait for the stall to complete. */ |
| 1037 | for (i = 20; i >= 0; i--) |
| 1038 | if ((inw(ioaddr + EL3_STATUS) & CmdInProgress) == 0) |
| 1039 | break; |
| 1040 | if (prev_entry) |
| 1041 | prev_entry->next = isa_virt_to_bus(&vp->tx_ring[entry]); |
| 1042 | if (inl(ioaddr + DownListPtr) == 0) { |
| 1043 | outl(isa_virt_to_bus(&vp->tx_ring[entry]), |
| 1044 | ioaddr + DownListPtr); |
| 1045 | queued_packet++; |
| 1046 | } |
| 1047 | outw(DownUnstall, ioaddr + EL3_CMD); |
| 1048 | spin_unlock_irqrestore(&vp->lock, flags); |
| 1049 | |
| 1050 | vp->cur_tx++; |
| 1051 | if (vp->cur_tx - vp->dirty_tx > TX_RING_SIZE - 1) |
| 1052 | vp->tx_full = 1; |
| 1053 | else { /* Clear previous interrupt enable. */ |
| 1054 | if (prev_entry) |
| 1055 | prev_entry->status &= ~0x80000000; |
| 1056 | netif_wake_queue(dev); |
| 1057 | } |
| 1058 | dev->trans_start = jiffies; |
| 1059 | return NETDEV_TX_OK; |
| 1060 | } |
| 1061 | /* Put out the doubleword header... */ |
| 1062 | outl(skb->len, ioaddr + TX_FIFO); |
| 1063 | dev->stats.tx_bytes += skb->len; |
| 1064 | #ifdef VORTEX_BUS_MASTER |
| 1065 | if (vp->bus_master) { |
| 1066 | /* Set the bus-master controller to transfer the packet. */ |
| 1067 | outl((int) (skb->data), ioaddr + Wn7_MasterAddr); |
| 1068 | outw((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen); |
| 1069 | vp->tx_skb = skb; |
| 1070 | outw(StartDMADown, ioaddr + EL3_CMD); |
| 1071 | /* queue will be woken at the DMADone interrupt. */ |
| 1072 | } else { |
| 1073 | /* ... and the packet rounded to a doubleword. */ |
| 1074 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); |
| 1075 | dev_kfree_skb(skb); |
| 1076 | if (inw(ioaddr + TxFree) > 1536) { |
| 1077 | netif_wake_queue(dev); |
| 1078 | } else |
| 1079 | /* Interrupt us when the FIFO has room for max-sized packet. */ |
| 1080 | outw(SetTxThreshold + (1536 >> 2), |
| 1081 | ioaddr + EL3_CMD); |
| 1082 | } |
| 1083 | #else |
| 1084 | /* ... and the packet rounded to a doubleword. */ |
| 1085 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); |
| 1086 | dev_kfree_skb(skb); |
| 1087 | if (inw(ioaddr + TxFree) > 1536) { |
| 1088 | netif_wake_queue(dev); |
| 1089 | } else |
| 1090 | /* Interrupt us when the FIFO has room for max-sized packet. */ |
| 1091 | outw(SetTxThreshold + (1536 >> 2), ioaddr + EL3_CMD); |
| 1092 | #endif /* bus master */ |
| 1093 | |
| 1094 | dev->trans_start = jiffies; |
| 1095 | |
| 1096 | /* Clear the Tx status stack. */ |
| 1097 | { |
| 1098 | short tx_status; |
| 1099 | int i = 4; |
| 1100 | |
| 1101 | while (--i > 0 && (tx_status = inb(ioaddr + TxStatus)) > 0) { |
| 1102 | if (tx_status & 0x3C) { /* A Tx-disabling error occurred. */ |
| 1103 | if (corkscrew_debug > 2) |
| 1104 | pr_debug("%s: Tx error, status %2.2x.\n", |
| 1105 | dev->name, tx_status); |
| 1106 | if (tx_status & 0x04) |
| 1107 | dev->stats.tx_fifo_errors++; |
| 1108 | if (tx_status & 0x38) |
| 1109 | dev->stats.tx_aborted_errors++; |
| 1110 | if (tx_status & 0x30) { |
| 1111 | int j; |
| 1112 | outw(TxReset, ioaddr + EL3_CMD); |
| 1113 | for (j = 20; j >= 0; j--) |
| 1114 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) |
| 1115 | break; |
| 1116 | } |
| 1117 | outw(TxEnable, ioaddr + EL3_CMD); |
| 1118 | } |
| 1119 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ |
| 1120 | } |
| 1121 | } |
| 1122 | return NETDEV_TX_OK; |
| 1123 | } |
| 1124 | |
| 1125 | /* The interrupt handler does all of the Rx thread work and cleans up |
| 1126 | after the Tx thread. */ |
| 1127 | |
| 1128 | static irqreturn_t corkscrew_interrupt(int irq, void *dev_id) |
| 1129 | { |
| 1130 | /* Use the now-standard shared IRQ implementation. */ |
| 1131 | struct net_device *dev = dev_id; |
| 1132 | struct corkscrew_private *lp = netdev_priv(dev); |
| 1133 | int ioaddr, status; |
| 1134 | int latency; |
| 1135 | int i = max_interrupt_work; |
| 1136 | |
| 1137 | ioaddr = dev->base_addr; |
| 1138 | latency = inb(ioaddr + Timer); |
| 1139 | |
| 1140 | spin_lock(&lp->lock); |
| 1141 | |
| 1142 | status = inw(ioaddr + EL3_STATUS); |
| 1143 | |
| 1144 | if (corkscrew_debug > 4) |
| 1145 | pr_debug("%s: interrupt, status %4.4x, timer %d.\n", |
| 1146 | dev->name, status, latency); |
| 1147 | if ((status & 0xE000) != 0xE000) { |
| 1148 | static int donedidthis; |
| 1149 | /* Some interrupt controllers store a bogus interrupt from boot-time. |
| 1150 | Ignore a single early interrupt, but don't hang the machine for |
| 1151 | other interrupt problems. */ |
| 1152 | if (donedidthis++ > 100) { |
| 1153 | pr_err("%s: Bogus interrupt, bailing. Status %4.4x, start=%d.\n", |
| 1154 | dev->name, status, netif_running(dev)); |
| 1155 | free_irq(dev->irq, dev); |
| 1156 | dev->irq = -1; |
| 1157 | } |
| 1158 | } |
| 1159 | |
| 1160 | do { |
| 1161 | if (corkscrew_debug > 5) |
| 1162 | pr_debug("%s: In interrupt loop, status %4.4x.\n", |
| 1163 | dev->name, status); |
| 1164 | if (status & RxComplete) |
| 1165 | corkscrew_rx(dev); |
| 1166 | |
| 1167 | if (status & TxAvailable) { |
| 1168 | if (corkscrew_debug > 5) |
| 1169 | pr_debug(" TX room bit was handled.\n"); |
| 1170 | /* There's room in the FIFO for a full-sized packet. */ |
| 1171 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); |
| 1172 | netif_wake_queue(dev); |
| 1173 | } |
| 1174 | if (status & DownComplete) { |
| 1175 | unsigned int dirty_tx = lp->dirty_tx; |
| 1176 | |
| 1177 | while (lp->cur_tx - dirty_tx > 0) { |
| 1178 | int entry = dirty_tx % TX_RING_SIZE; |
| 1179 | if (inl(ioaddr + DownListPtr) == isa_virt_to_bus(&lp->tx_ring[entry])) |
| 1180 | break; /* It still hasn't been processed. */ |
| 1181 | if (lp->tx_skbuff[entry]) { |
| 1182 | dev_kfree_skb_irq(lp->tx_skbuff[entry]); |
| 1183 | lp->tx_skbuff[entry] = NULL; |
| 1184 | } |
| 1185 | dirty_tx++; |
| 1186 | } |
| 1187 | lp->dirty_tx = dirty_tx; |
| 1188 | outw(AckIntr | DownComplete, ioaddr + EL3_CMD); |
| 1189 | if (lp->tx_full && (lp->cur_tx - dirty_tx <= TX_RING_SIZE - 1)) { |
| 1190 | lp->tx_full = 0; |
| 1191 | netif_wake_queue(dev); |
| 1192 | } |
| 1193 | } |
| 1194 | #ifdef VORTEX_BUS_MASTER |
| 1195 | if (status & DMADone) { |
| 1196 | outw(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */ |
| 1197 | dev_kfree_skb_irq(lp->tx_skb); /* Release the transferred buffer */ |
| 1198 | netif_wake_queue(dev); |
| 1199 | } |
| 1200 | #endif |
| 1201 | if (status & UpComplete) { |
| 1202 | boomerang_rx(dev); |
| 1203 | outw(AckIntr | UpComplete, ioaddr + EL3_CMD); |
| 1204 | } |
| 1205 | if (status & (AdapterFailure | RxEarly | StatsFull)) { |
| 1206 | /* Handle all uncommon interrupts at once. */ |
| 1207 | if (status & RxEarly) { /* Rx early is unused. */ |
| 1208 | corkscrew_rx(dev); |
| 1209 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); |
| 1210 | } |
| 1211 | if (status & StatsFull) { /* Empty statistics. */ |
| 1212 | static int DoneDidThat; |
| 1213 | if (corkscrew_debug > 4) |
| 1214 | pr_debug("%s: Updating stats.\n", dev->name); |
| 1215 | update_stats(ioaddr, dev); |
| 1216 | /* DEBUG HACK: Disable statistics as an interrupt source. */ |
| 1217 | /* This occurs when we have the wrong media type! */ |
| 1218 | if (DoneDidThat == 0 && inw(ioaddr + EL3_STATUS) & StatsFull) { |
| 1219 | int win, reg; |
| 1220 | pr_notice("%s: Updating stats failed, disabling stats as an interrupt source.\n", |
| 1221 | dev->name); |
| 1222 | for (win = 0; win < 8; win++) { |
| 1223 | EL3WINDOW(win); |
| 1224 | pr_notice("Vortex window %d:", win); |
| 1225 | for (reg = 0; reg < 16; reg++) |
| 1226 | pr_cont(" %2.2x", inb(ioaddr + reg)); |
| 1227 | pr_cont("\n"); |
| 1228 | } |
| 1229 | EL3WINDOW(7); |
| 1230 | outw(SetIntrEnb | TxAvailable | |
| 1231 | RxComplete | AdapterFailure | |
| 1232 | UpComplete | DownComplete | |
| 1233 | TxComplete, ioaddr + EL3_CMD); |
| 1234 | DoneDidThat++; |
| 1235 | } |
| 1236 | } |
| 1237 | if (status & AdapterFailure) { |
| 1238 | /* Adapter failure requires Rx reset and reinit. */ |
| 1239 | outw(RxReset, ioaddr + EL3_CMD); |
| 1240 | /* Set the Rx filter to the current state. */ |
| 1241 | set_rx_mode(dev); |
| 1242 | outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */ |
| 1243 | outw(AckIntr | AdapterFailure, |
| 1244 | ioaddr + EL3_CMD); |
| 1245 | } |
| 1246 | } |
| 1247 | |
| 1248 | if (--i < 0) { |
| 1249 | pr_err("%s: Too much work in interrupt, status %4.4x. Disabling functions (%4.4x).\n", |
| 1250 | dev->name, status, SetStatusEnb | ((~status) & 0x7FE)); |
| 1251 | /* Disable all pending interrupts. */ |
| 1252 | outw(SetStatusEnb | ((~status) & 0x7FE), ioaddr + EL3_CMD); |
| 1253 | outw(AckIntr | 0x7FF, ioaddr + EL3_CMD); |
| 1254 | break; |
| 1255 | } |
| 1256 | /* Acknowledge the IRQ. */ |
| 1257 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); |
| 1258 | |
| 1259 | } while ((status = inw(ioaddr + EL3_STATUS)) & (IntLatch | RxComplete)); |
| 1260 | |
| 1261 | spin_unlock(&lp->lock); |
| 1262 | |
| 1263 | if (corkscrew_debug > 4) |
| 1264 | pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name, status); |
| 1265 | return IRQ_HANDLED; |
| 1266 | } |
| 1267 | |
| 1268 | static int corkscrew_rx(struct net_device *dev) |
| 1269 | { |
| 1270 | int ioaddr = dev->base_addr; |
| 1271 | int i; |
| 1272 | short rx_status; |
| 1273 | |
| 1274 | if (corkscrew_debug > 5) |
| 1275 | pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n", |
| 1276 | inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus)); |
| 1277 | while ((rx_status = inw(ioaddr + RxStatus)) > 0) { |
| 1278 | if (rx_status & 0x4000) { /* Error, update stats. */ |
| 1279 | unsigned char rx_error = inb(ioaddr + RxErrors); |
| 1280 | if (corkscrew_debug > 2) |
| 1281 | pr_debug(" Rx error: status %2.2x.\n", |
| 1282 | rx_error); |
| 1283 | dev->stats.rx_errors++; |
| 1284 | if (rx_error & 0x01) |
| 1285 | dev->stats.rx_over_errors++; |
| 1286 | if (rx_error & 0x02) |
| 1287 | dev->stats.rx_length_errors++; |
| 1288 | if (rx_error & 0x04) |
| 1289 | dev->stats.rx_frame_errors++; |
| 1290 | if (rx_error & 0x08) |
| 1291 | dev->stats.rx_crc_errors++; |
| 1292 | if (rx_error & 0x10) |
| 1293 | dev->stats.rx_length_errors++; |
| 1294 | } else { |
| 1295 | /* The packet length: up to 4.5K!. */ |
| 1296 | short pkt_len = rx_status & 0x1fff; |
| 1297 | struct sk_buff *skb; |
| 1298 | |
| 1299 | skb = dev_alloc_skb(pkt_len + 5 + 2); |
| 1300 | if (corkscrew_debug > 4) |
| 1301 | pr_debug("Receiving packet size %d status %4.4x.\n", |
| 1302 | pkt_len, rx_status); |
| 1303 | if (skb != NULL) { |
| 1304 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
| 1305 | /* 'skb_put()' points to the start of sk_buff data area. */ |
| 1306 | insl(ioaddr + RX_FIFO, |
| 1307 | skb_put(skb, pkt_len), |
| 1308 | (pkt_len + 3) >> 2); |
| 1309 | outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */ |
| 1310 | skb->protocol = eth_type_trans(skb, dev); |
| 1311 | netif_rx(skb); |
| 1312 | dev->stats.rx_packets++; |
| 1313 | dev->stats.rx_bytes += pkt_len; |
| 1314 | /* Wait a limited time to go to next packet. */ |
| 1315 | for (i = 200; i >= 0; i--) |
| 1316 | if (! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) |
| 1317 | break; |
| 1318 | continue; |
| 1319 | } else if (corkscrew_debug) |
| 1320 | pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, pkt_len); |
| 1321 | } |
| 1322 | outw(RxDiscard, ioaddr + EL3_CMD); |
| 1323 | dev->stats.rx_dropped++; |
| 1324 | /* Wait a limited time to skip this packet. */ |
| 1325 | for (i = 200; i >= 0; i--) |
| 1326 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) |
| 1327 | break; |
| 1328 | } |
| 1329 | return 0; |
| 1330 | } |
| 1331 | |
| 1332 | static int boomerang_rx(struct net_device *dev) |
| 1333 | { |
| 1334 | struct corkscrew_private *vp = netdev_priv(dev); |
| 1335 | int entry = vp->cur_rx % RX_RING_SIZE; |
| 1336 | int ioaddr = dev->base_addr; |
| 1337 | int rx_status; |
| 1338 | |
| 1339 | if (corkscrew_debug > 5) |
| 1340 | pr_debug(" In boomerang_rx(), status %4.4x, rx_status %4.4x.\n", |
| 1341 | inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus)); |
| 1342 | while ((rx_status = vp->rx_ring[entry].status) & RxDComplete) { |
| 1343 | if (rx_status & RxDError) { /* Error, update stats. */ |
| 1344 | unsigned char rx_error = rx_status >> 16; |
| 1345 | if (corkscrew_debug > 2) |
| 1346 | pr_debug(" Rx error: status %2.2x.\n", |
| 1347 | rx_error); |
| 1348 | dev->stats.rx_errors++; |
| 1349 | if (rx_error & 0x01) |
| 1350 | dev->stats.rx_over_errors++; |
| 1351 | if (rx_error & 0x02) |
| 1352 | dev->stats.rx_length_errors++; |
| 1353 | if (rx_error & 0x04) |
| 1354 | dev->stats.rx_frame_errors++; |
| 1355 | if (rx_error & 0x08) |
| 1356 | dev->stats.rx_crc_errors++; |
| 1357 | if (rx_error & 0x10) |
| 1358 | dev->stats.rx_length_errors++; |
| 1359 | } else { |
| 1360 | /* The packet length: up to 4.5K!. */ |
| 1361 | short pkt_len = rx_status & 0x1fff; |
| 1362 | struct sk_buff *skb; |
| 1363 | |
| 1364 | dev->stats.rx_bytes += pkt_len; |
| 1365 | if (corkscrew_debug > 4) |
| 1366 | pr_debug("Receiving packet size %d status %4.4x.\n", |
| 1367 | pkt_len, rx_status); |
| 1368 | |
| 1369 | /* Check if the packet is long enough to just accept without |
| 1370 | copying to a properly sized skbuff. */ |
| 1371 | if (pkt_len < rx_copybreak |
| 1372 | && (skb = dev_alloc_skb(pkt_len + 4)) != NULL) { |
| 1373 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
| 1374 | /* 'skb_put()' points to the start of sk_buff data area. */ |
| 1375 | memcpy(skb_put(skb, pkt_len), |
| 1376 | isa_bus_to_virt(vp->rx_ring[entry]. |
| 1377 | addr), pkt_len); |
| 1378 | rx_copy++; |
| 1379 | } else { |
| 1380 | void *temp; |
| 1381 | /* Pass up the skbuff already on the Rx ring. */ |
| 1382 | skb = vp->rx_skbuff[entry]; |
| 1383 | vp->rx_skbuff[entry] = NULL; |
| 1384 | temp = skb_put(skb, pkt_len); |
| 1385 | /* Remove this checking code for final release. */ |
| 1386 | if (isa_bus_to_virt(vp->rx_ring[entry].addr) != temp) |
| 1387 | pr_warning("%s: Warning -- the skbuff addresses do not match" |
| 1388 | " in boomerang_rx: %p vs. %p / %p.\n", |
| 1389 | dev->name, |
| 1390 | isa_bus_to_virt(vp-> |
| 1391 | rx_ring[entry]. |
| 1392 | addr), skb->head, |
| 1393 | temp); |
| 1394 | rx_nocopy++; |
| 1395 | } |
| 1396 | skb->protocol = eth_type_trans(skb, dev); |
| 1397 | netif_rx(skb); |
| 1398 | dev->stats.rx_packets++; |
| 1399 | } |
| 1400 | entry = (++vp->cur_rx) % RX_RING_SIZE; |
| 1401 | } |
| 1402 | /* Refill the Rx ring buffers. */ |
| 1403 | for (; vp->cur_rx - vp->dirty_rx > 0; vp->dirty_rx++) { |
| 1404 | struct sk_buff *skb; |
| 1405 | entry = vp->dirty_rx % RX_RING_SIZE; |
| 1406 | if (vp->rx_skbuff[entry] == NULL) { |
| 1407 | skb = dev_alloc_skb(PKT_BUF_SZ); |
| 1408 | if (skb == NULL) |
| 1409 | break; /* Bad news! */ |
| 1410 | skb->dev = dev; /* Mark as being used by this device. */ |
| 1411 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
| 1412 | vp->rx_ring[entry].addr = isa_virt_to_bus(skb->data); |
| 1413 | vp->rx_skbuff[entry] = skb; |
| 1414 | } |
| 1415 | vp->rx_ring[entry].status = 0; /* Clear complete bit. */ |
| 1416 | } |
| 1417 | return 0; |
| 1418 | } |
| 1419 | |
| 1420 | static int corkscrew_close(struct net_device *dev) |
| 1421 | { |
| 1422 | struct corkscrew_private *vp = netdev_priv(dev); |
| 1423 | int ioaddr = dev->base_addr; |
| 1424 | int i; |
| 1425 | |
| 1426 | netif_stop_queue(dev); |
| 1427 | |
| 1428 | if (corkscrew_debug > 1) { |
| 1429 | pr_debug("%s: corkscrew_close() status %4.4x, Tx status %2.2x.\n", |
| 1430 | dev->name, inw(ioaddr + EL3_STATUS), |
| 1431 | inb(ioaddr + TxStatus)); |
| 1432 | pr_debug("%s: corkscrew close stats: rx_nocopy %d rx_copy %d tx_queued %d.\n", |
| 1433 | dev->name, rx_nocopy, rx_copy, queued_packet); |
| 1434 | } |
| 1435 | |
| 1436 | del_timer(&vp->timer); |
| 1437 | |
| 1438 | /* Turn off statistics ASAP. We update lp->stats below. */ |
| 1439 | outw(StatsDisable, ioaddr + EL3_CMD); |
| 1440 | |
| 1441 | /* Disable the receiver and transmitter. */ |
| 1442 | outw(RxDisable, ioaddr + EL3_CMD); |
| 1443 | outw(TxDisable, ioaddr + EL3_CMD); |
| 1444 | |
| 1445 | if (dev->if_port == XCVR_10base2) |
| 1446 | /* Turn off thinnet power. Green! */ |
| 1447 | outw(StopCoax, ioaddr + EL3_CMD); |
| 1448 | |
| 1449 | free_irq(dev->irq, dev); |
| 1450 | |
| 1451 | outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); |
| 1452 | |
| 1453 | update_stats(ioaddr, dev); |
| 1454 | if (vp->full_bus_master_rx) { /* Free Boomerang bus master Rx buffers. */ |
| 1455 | outl(0, ioaddr + UpListPtr); |
| 1456 | for (i = 0; i < RX_RING_SIZE; i++) |
| 1457 | if (vp->rx_skbuff[i]) { |
| 1458 | dev_kfree_skb(vp->rx_skbuff[i]); |
| 1459 | vp->rx_skbuff[i] = NULL; |
| 1460 | } |
| 1461 | } |
| 1462 | if (vp->full_bus_master_tx) { /* Free Boomerang bus master Tx buffers. */ |
| 1463 | outl(0, ioaddr + DownListPtr); |
| 1464 | for (i = 0; i < TX_RING_SIZE; i++) |
| 1465 | if (vp->tx_skbuff[i]) { |
| 1466 | dev_kfree_skb(vp->tx_skbuff[i]); |
| 1467 | vp->tx_skbuff[i] = NULL; |
| 1468 | } |
| 1469 | } |
| 1470 | |
| 1471 | return 0; |
| 1472 | } |
| 1473 | |
| 1474 | static struct net_device_stats *corkscrew_get_stats(struct net_device *dev) |
| 1475 | { |
| 1476 | struct corkscrew_private *vp = netdev_priv(dev); |
| 1477 | unsigned long flags; |
| 1478 | |
| 1479 | if (netif_running(dev)) { |
| 1480 | spin_lock_irqsave(&vp->lock, flags); |
| 1481 | update_stats(dev->base_addr, dev); |
| 1482 | spin_unlock_irqrestore(&vp->lock, flags); |
| 1483 | } |
| 1484 | return &dev->stats; |
| 1485 | } |
| 1486 | |
| 1487 | /* Update statistics. |
| 1488 | Unlike with the EL3 we need not worry about interrupts changing |
| 1489 | the window setting from underneath us, but we must still guard |
| 1490 | against a race condition with a StatsUpdate interrupt updating the |
| 1491 | table. This is done by checking that the ASM (!) code generated uses |
| 1492 | atomic updates with '+='. |
| 1493 | */ |
| 1494 | static void update_stats(int ioaddr, struct net_device *dev) |
| 1495 | { |
| 1496 | /* Unlike the 3c5x9 we need not turn off stats updates while reading. */ |
| 1497 | /* Switch to the stats window, and read everything. */ |
| 1498 | EL3WINDOW(6); |
| 1499 | dev->stats.tx_carrier_errors += inb(ioaddr + 0); |
| 1500 | dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); |
| 1501 | /* Multiple collisions. */ inb(ioaddr + 2); |
| 1502 | dev->stats.collisions += inb(ioaddr + 3); |
| 1503 | dev->stats.tx_window_errors += inb(ioaddr + 4); |
| 1504 | dev->stats.rx_fifo_errors += inb(ioaddr + 5); |
| 1505 | dev->stats.tx_packets += inb(ioaddr + 6); |
| 1506 | dev->stats.tx_packets += (inb(ioaddr + 9) & 0x30) << 4; |
| 1507 | /* Rx packets */ inb(ioaddr + 7); |
| 1508 | /* Must read to clear */ |
| 1509 | /* Tx deferrals */ inb(ioaddr + 8); |
| 1510 | /* Don't bother with register 9, an extension of registers 6&7. |
| 1511 | If we do use the 6&7 values the atomic update assumption above |
| 1512 | is invalid. */ |
| 1513 | inw(ioaddr + 10); /* Total Rx and Tx octets. */ |
| 1514 | inw(ioaddr + 12); |
| 1515 | /* New: On the Vortex we must also clear the BadSSD counter. */ |
| 1516 | EL3WINDOW(4); |
| 1517 | inb(ioaddr + 12); |
| 1518 | |
| 1519 | /* We change back to window 7 (not 1) with the Vortex. */ |
| 1520 | EL3WINDOW(7); |
| 1521 | return; |
| 1522 | } |
| 1523 | |
| 1524 | /* This new version of set_rx_mode() supports v1.4 kernels. |
| 1525 | The Vortex chip has no documented multicast filter, so the only |
| 1526 | multicast setting is to receive all multicast frames. At least |
| 1527 | the chip has a very clean way to set the mode, unlike many others. */ |
| 1528 | static void set_rx_mode(struct net_device *dev) |
| 1529 | { |
| 1530 | int ioaddr = dev->base_addr; |
| 1531 | short new_mode; |
| 1532 | |
| 1533 | if (dev->flags & IFF_PROMISC) { |
| 1534 | if (corkscrew_debug > 3) |
| 1535 | pr_debug("%s: Setting promiscuous mode.\n", |
| 1536 | dev->name); |
| 1537 | new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm; |
| 1538 | } else if ((dev->mc_list) || (dev->flags & IFF_ALLMULTI)) { |
| 1539 | new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast; |
| 1540 | } else |
| 1541 | new_mode = SetRxFilter | RxStation | RxBroadcast; |
| 1542 | |
| 1543 | outw(new_mode, ioaddr + EL3_CMD); |
| 1544 | } |
| 1545 | |
| 1546 | static void netdev_get_drvinfo(struct net_device *dev, |
| 1547 | struct ethtool_drvinfo *info) |
| 1548 | { |
| 1549 | strcpy(info->driver, DRV_NAME); |
| 1550 | strcpy(info->version, DRV_VERSION); |
| 1551 | sprintf(info->bus_info, "ISA 0x%lx", dev->base_addr); |
| 1552 | } |
| 1553 | |
| 1554 | static u32 netdev_get_msglevel(struct net_device *dev) |
| 1555 | { |
| 1556 | return corkscrew_debug; |
| 1557 | } |
| 1558 | |
| 1559 | static void netdev_set_msglevel(struct net_device *dev, u32 level) |
| 1560 | { |
| 1561 | corkscrew_debug = level; |
| 1562 | } |
| 1563 | |
| 1564 | static const struct ethtool_ops netdev_ethtool_ops = { |
| 1565 | .get_drvinfo = netdev_get_drvinfo, |
| 1566 | .get_msglevel = netdev_get_msglevel, |
| 1567 | .set_msglevel = netdev_set_msglevel, |
| 1568 | }; |
| 1569 | |
| 1570 | |
| 1571 | #ifdef MODULE |
| 1572 | void cleanup_module(void) |
| 1573 | { |
| 1574 | while (!list_empty(&root_corkscrew_dev)) { |
| 1575 | struct net_device *dev; |
| 1576 | struct corkscrew_private *vp; |
| 1577 | |
| 1578 | vp = list_entry(root_corkscrew_dev.next, |
| 1579 | struct corkscrew_private, list); |
| 1580 | dev = vp->our_dev; |
| 1581 | unregister_netdev(dev); |
| 1582 | cleanup_card(dev); |
| 1583 | free_netdev(dev); |
| 1584 | } |
| 1585 | } |
| 1586 | #endif /* MODULE */ |