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1da177e4 LT |
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@redhat.com) | |
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/config.h> | |
61 | #include <linux/module.h> | |
62 | #include <linux/isapnp.h> | |
63 | #include <linux/kernel.h> | |
64 | #include <linux/netdevice.h> | |
65 | #include <linux/string.h> | |
66 | #include <linux/errno.h> | |
67 | #include <linux/in.h> | |
68 | #include <linux/ioport.h> | |
69 | #include <linux/slab.h> | |
70 | #include <linux/skbuff.h> | |
71 | #include <linux/etherdevice.h> | |
72 | #include <linux/interrupt.h> | |
73 | #include <linux/timer.h> | |
74 | #include <linux/ethtool.h> | |
75 | #include <linux/bitops.h> | |
76 | ||
77 | #include <asm/uaccess.h> | |
78 | #include <asm/io.h> | |
79 | #include <asm/dma.h> | |
80 | ||
81 | #define NEW_MULTICAST | |
82 | #include <linux/delay.h> | |
83 | ||
84 | #define MAX_UNITS 8 | |
85 | ||
86 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); | |
87 | MODULE_DESCRIPTION("3Com 3c515 Corkscrew driver"); | |
88 | MODULE_LICENSE("GPL"); | |
89 | MODULE_VERSION(DRV_VERSION); | |
90 | ||
91 | /* "Knobs" for adjusting internal parameters. */ | |
92 | /* Put out somewhat more debugging messages. (0 - no msg, 1 minimal msgs). */ | |
93 | #define DRIVER_DEBUG 1 | |
94 | /* Some values here only for performance evaluation and path-coverage | |
95 | debugging. */ | |
96 | static int rx_nocopy, rx_copy, queued_packet; | |
97 | ||
98 | /* Number of times to check to see if the Tx FIFO has space, used in some | |
99 | limited cases. */ | |
100 | #define WAIT_TX_AVAIL 200 | |
101 | ||
102 | /* Operational parameter that usually are not changed. */ | |
103 | #define TX_TIMEOUT 40 /* Time in jiffies before concluding Tx hung */ | |
104 | ||
105 | /* The size here is somewhat misleading: the Corkscrew also uses the ISA | |
106 | aliased registers at <base>+0x400. | |
107 | */ | |
108 | #define CORKSCREW_TOTAL_SIZE 0x20 | |
109 | ||
110 | #ifdef DRIVER_DEBUG | |
111 | static int corkscrew_debug = DRIVER_DEBUG; | |
112 | #else | |
113 | static int corkscrew_debug = 1; | |
114 | #endif | |
115 | ||
116 | #define CORKSCREW_ID 10 | |
117 | ||
118 | /* | |
119 | Theory of Operation | |
120 | ||
121 | I. Board Compatibility | |
122 | ||
123 | This device driver is designed for the 3Com 3c515 ISA Fast EtherLink XL, | |
124 | 3Com's ISA bus adapter for Fast Ethernet. Due to the unique I/O port layout, | |
125 | it's not practical to integrate this driver with the other EtherLink drivers. | |
126 | ||
127 | II. Board-specific settings | |
128 | ||
129 | The Corkscrew has an EEPROM for configuration, but no special settings are | |
130 | needed for Linux. | |
131 | ||
132 | III. Driver operation | |
133 | ||
134 | The 3c515 series use an interface that's very similar to the 3c900 "Boomerang" | |
135 | PCI cards, with the bus master interface extensively modified to work with | |
136 | the ISA bus. | |
137 | ||
138 | The card is capable of full-bus-master transfers with separate | |
139 | lists of transmit and receive descriptors, similar to the AMD LANCE/PCnet, | |
140 | DEC Tulip and Intel Speedo3. | |
141 | ||
142 | This driver uses a "RX_COPYBREAK" scheme rather than a fixed intermediate | |
143 | receive buffer. This scheme allocates full-sized skbuffs as receive | |
144 | buffers. The value RX_COPYBREAK is used as the copying breakpoint: it is | |
145 | chosen to trade-off the memory wasted by passing the full-sized skbuff to | |
146 | the queue layer for all frames vs. the copying cost of copying a frame to a | |
147 | correctly-sized skbuff. | |
148 | ||
149 | ||
150 | IIIC. Synchronization | |
151 | The driver runs as two independent, single-threaded flows of control. One | |
152 | is the send-packet routine, which enforces single-threaded use by the netif | |
153 | layer. The other thread is the interrupt handler, which is single | |
154 | threaded by the hardware and other software. | |
155 | ||
156 | IV. Notes | |
157 | ||
158 | Thanks to Terry Murphy of 3Com for providing documentation and a development | |
159 | board. | |
160 | ||
161 | The names "Vortex", "Boomerang" and "Corkscrew" are the internal 3Com | |
162 | project names. I use these names to eliminate confusion -- 3Com product | |
163 | numbers and names are very similar and often confused. | |
164 | ||
165 | The new chips support both ethernet (1.5K) and FDDI (4.5K) frame sizes! | |
166 | This driver only supports ethernet frames because of the recent MTU limit | |
167 | of 1.5K, but the changes to support 4.5K are minimal. | |
168 | */ | |
169 | ||
170 | /* Operational definitions. | |
171 | These are not used by other compilation units and thus are not | |
172 | exported in a ".h" file. | |
173 | ||
174 | First the windows. There are eight register windows, with the command | |
175 | and status registers available in each. | |
176 | */ | |
177 | #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) | |
178 | #define EL3_CMD 0x0e | |
179 | #define EL3_STATUS 0x0e | |
180 | ||
181 | /* The top five bits written to EL3_CMD are a command, the lower | |
182 | 11 bits are the parameter, if applicable. | |
183 | Note that 11 parameters bits was fine for ethernet, but the new chips | |
184 | can handle FDDI length frames (~4500 octets) and now parameters count | |
185 | 32-bit 'Dwords' rather than octets. */ | |
186 | ||
187 | enum corkscrew_cmd { | |
188 | TotalReset = 0 << 11, SelectWindow = 1 << 11, StartCoax = 2 << 11, | |
189 | RxDisable = 3 << 11, RxEnable = 4 << 11, RxReset = 5 << 11, | |
190 | UpStall = 6 << 11, UpUnstall = (6 << 11) + 1, DownStall = (6 << 11) + 2, | |
191 | DownUnstall = (6 << 11) + 3, RxDiscard = 8 << 11, TxEnable = 9 << 11, | |
192 | TxDisable = 10 << 11, TxReset = 11 << 11, FakeIntr = 12 << 11, | |
193 | AckIntr = 13 << 11, SetIntrEnb = 14 << 11, SetStatusEnb = 15 << 11, | |
194 | SetRxFilter = 16 << 11, SetRxThreshold = 17 << 11, | |
195 | SetTxThreshold = 18 << 11, SetTxStart = 19 << 11, StartDMAUp = 20 << 11, | |
196 | StartDMADown = (20 << 11) + 1, StatsEnable = 21 << 11, | |
197 | StatsDisable = 22 << 11, StopCoax = 23 << 11, | |
198 | }; | |
199 | ||
200 | /* The SetRxFilter command accepts the following classes: */ | |
201 | enum RxFilter { | |
202 | RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 | |
203 | }; | |
204 | ||
205 | /* Bits in the general status register. */ | |
206 | enum corkscrew_status { | |
207 | IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, | |
208 | TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, | |
209 | IntReq = 0x0040, StatsFull = 0x0080, | |
210 | DMADone = 1 << 8, DownComplete = 1 << 9, UpComplete = 1 << 10, | |
211 | DMAInProgress = 1 << 11, /* DMA controller is still busy. */ | |
212 | CmdInProgress = 1 << 12, /* EL3_CMD is still busy. */ | |
213 | }; | |
214 | ||
215 | /* Register window 1 offsets, the window used in normal operation. | |
216 | On the Corkscrew this window is always mapped at offsets 0x10-0x1f. */ | |
217 | enum Window1 { | |
218 | TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, | |
219 | RxStatus = 0x18, Timer = 0x1A, TxStatus = 0x1B, | |
220 | TxFree = 0x1C, /* Remaining free bytes in Tx buffer. */ | |
221 | }; | |
222 | enum Window0 { | |
223 | Wn0IRQ = 0x08, | |
224 | #if defined(CORKSCREW) | |
225 | Wn0EepromCmd = 0x200A, /* Corkscrew EEPROM command register. */ | |
226 | Wn0EepromData = 0x200C, /* Corkscrew EEPROM results register. */ | |
227 | #else | |
228 | Wn0EepromCmd = 10, /* Window 0: EEPROM command register. */ | |
229 | Wn0EepromData = 12, /* Window 0: EEPROM results register. */ | |
230 | #endif | |
231 | }; | |
232 | enum Win0_EEPROM_bits { | |
233 | EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0, | |
234 | EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ | |
235 | EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ | |
236 | }; | |
237 | ||
238 | /* EEPROM locations. */ | |
239 | enum eeprom_offset { | |
240 | PhysAddr01 = 0, PhysAddr23 = 1, PhysAddr45 = 2, ModelID = 3, | |
241 | EtherLink3ID = 7, | |
242 | }; | |
243 | ||
244 | enum Window3 { /* Window 3: MAC/config bits. */ | |
245 | Wn3_Config = 0, Wn3_MAC_Ctrl = 6, Wn3_Options = 8, | |
246 | }; | |
247 | union wn3_config { | |
248 | int i; | |
249 | struct w3_config_fields { | |
250 | unsigned int ram_size:3, ram_width:1, ram_speed:2, rom_size:2; | |
251 | int pad8:8; | |
252 | unsigned int ram_split:2, pad18:2, xcvr:3, pad21:1, autoselect:1; | |
253 | int pad24:7; | |
254 | } u; | |
255 | }; | |
256 | ||
257 | enum Window4 { | |
258 | Wn4_NetDiag = 6, Wn4_Media = 10, /* Window 4: Xcvr/media bits. */ | |
259 | }; | |
260 | enum Win4_Media_bits { | |
261 | Media_SQE = 0x0008, /* Enable SQE error counting for AUI. */ | |
262 | Media_10TP = 0x00C0, /* Enable link beat and jabber for 10baseT. */ | |
263 | Media_Lnk = 0x0080, /* Enable just link beat for 100TX/100FX. */ | |
264 | Media_LnkBeat = 0x0800, | |
265 | }; | |
266 | enum Window7 { /* Window 7: Bus Master control. */ | |
267 | Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12, | |
268 | }; | |
269 | ||
270 | /* Boomerang-style bus master control registers. Note ISA aliases! */ | |
271 | enum MasterCtrl { | |
272 | PktStatus = 0x400, DownListPtr = 0x404, FragAddr = 0x408, FragLen = | |
273 | 0x40c, | |
274 | TxFreeThreshold = 0x40f, UpPktStatus = 0x410, UpListPtr = 0x418, | |
275 | }; | |
276 | ||
277 | /* The Rx and Tx descriptor lists. | |
278 | Caution Alpha hackers: these types are 32 bits! Note also the 8 byte | |
279 | alignment contraint on tx_ring[] and rx_ring[]. */ | |
280 | struct boom_rx_desc { | |
281 | u32 next; | |
282 | s32 status; | |
283 | u32 addr; | |
284 | s32 length; | |
285 | }; | |
286 | ||
287 | /* Values for the Rx status entry. */ | |
288 | enum rx_desc_status { | |
289 | RxDComplete = 0x00008000, RxDError = 0x4000, | |
290 | /* See boomerang_rx() for actual error bits */ | |
291 | }; | |
292 | ||
293 | struct boom_tx_desc { | |
294 | u32 next; | |
295 | s32 status; | |
296 | u32 addr; | |
297 | s32 length; | |
298 | }; | |
299 | ||
300 | struct corkscrew_private { | |
301 | const char *product_name; | |
302 | struct list_head list; | |
303 | struct net_device *our_dev; | |
304 | /* The Rx and Tx rings are here to keep them quad-word-aligned. */ | |
305 | struct boom_rx_desc rx_ring[RX_RING_SIZE]; | |
306 | struct boom_tx_desc tx_ring[TX_RING_SIZE]; | |
307 | /* The addresses of transmit- and receive-in-place skbuffs. */ | |
308 | struct sk_buff *rx_skbuff[RX_RING_SIZE]; | |
309 | struct sk_buff *tx_skbuff[TX_RING_SIZE]; | |
310 | unsigned int cur_rx, cur_tx; /* The next free ring entry */ | |
311 | unsigned int dirty_rx, dirty_tx;/* The ring entries to be free()ed. */ | |
312 | struct net_device_stats stats; | |
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); | |
b1fc5505 | 368 | static int corkscrew_setup(struct net_device *dev, int ioaddr, |
1da177e4 LT |
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 int 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 | struct pt_regs *regs); | |
379 | static int corkscrew_close(struct net_device *dev); | |
380 | static void update_stats(int addr, struct net_device *dev); | |
381 | static struct net_device_stats *corkscrew_get_stats(struct net_device *dev); | |
382 | static void set_rx_mode(struct net_device *dev); | |
383 | static struct ethtool_ops netdev_ethtool_ops; | |
384 | \f | |
385 | ||
386 | /* | |
387 | Unfortunately maximizing the shared code between the integrated and | |
388 | module version of the driver results in a complicated set of initialization | |
389 | procedures. | |
390 | init_module() -- modules / tc59x_init() -- built-in | |
391 | The wrappers for corkscrew_scan() | |
392 | corkscrew_scan() The common routine that scans for PCI and EISA cards | |
393 | corkscrew_found_device() Allocate a device structure when we find a card. | |
394 | Different versions exist for modules and built-in. | |
395 | corkscrew_probe1() Fill in the device structure -- this is separated | |
396 | so that the modules code can put it in dev->init. | |
397 | */ | |
398 | /* This driver uses 'options' to pass the media type, full-duplex flag, etc. */ | |
399 | /* Note: this is the only limit on the number of cards supported!! */ | |
400 | static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1, }; | |
401 | ||
402 | #ifdef MODULE | |
403 | static int debug = -1; | |
404 | ||
405 | module_param(debug, int, 0); | |
406 | module_param_array(options, int, NULL, 0); | |
407 | module_param(rx_copybreak, int, 0); | |
408 | module_param(max_interrupt_work, int, 0); | |
409 | MODULE_PARM_DESC(debug, "3c515 debug level (0-6)"); | |
410 | MODULE_PARM_DESC(options, "3c515: Bits 0-2: media type, bit 3: full duplex, bit 4: bus mastering"); | |
411 | MODULE_PARM_DESC(rx_copybreak, "3c515 copy breakpoint for copy-only-tiny-frames"); | |
412 | MODULE_PARM_DESC(max_interrupt_work, "3c515 maximum events handled per interrupt"); | |
413 | ||
414 | /* A list of all installed Vortex devices, for removing the driver module. */ | |
415 | /* we will need locking (and refcounting) if we ever use it for more */ | |
416 | static LIST_HEAD(root_corkscrew_dev); | |
417 | ||
418 | int init_module(void) | |
419 | { | |
420 | int found = 0; | |
421 | if (debug >= 0) | |
422 | corkscrew_debug = debug; | |
423 | if (corkscrew_debug) | |
424 | printk(version); | |
425 | while (corkscrew_scan(-1)) | |
426 | found++; | |
427 | return found ? 0 : -ENODEV; | |
428 | } | |
429 | ||
430 | #else | |
431 | struct net_device *tc515_probe(int unit) | |
432 | { | |
433 | struct net_device *dev = corkscrew_scan(unit); | |
434 | static int printed; | |
435 | ||
436 | if (!dev) | |
437 | return ERR_PTR(-ENODEV); | |
438 | ||
439 | if (corkscrew_debug > 0 && !printed) { | |
440 | printed = 1; | |
441 | printk(version); | |
442 | } | |
443 | ||
444 | return dev; | |
445 | } | |
446 | #endif /* not MODULE */ | |
447 | ||
448 | static int check_device(unsigned ioaddr) | |
449 | { | |
450 | int timer; | |
451 | ||
452 | if (!request_region(ioaddr, CORKSCREW_TOTAL_SIZE, "3c515")) | |
453 | return 0; | |
454 | /* Check the resource configuration for a matching ioaddr. */ | |
455 | if ((inw(ioaddr + 0x2002) & 0x1f0) != (ioaddr & 0x1f0)) { | |
456 | release_region(ioaddr, CORKSCREW_TOTAL_SIZE); | |
457 | return 0; | |
458 | } | |
459 | /* Verify by reading the device ID from the EEPROM. */ | |
460 | outw(EEPROM_Read + 7, ioaddr + Wn0EepromCmd); | |
461 | /* Pause for at least 162 us. for the read to take place. */ | |
462 | for (timer = 4; timer >= 0; timer--) { | |
463 | udelay(162); | |
464 | if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0) | |
465 | break; | |
466 | } | |
467 | if (inw(ioaddr + Wn0EepromData) != 0x6d50) { | |
468 | release_region(ioaddr, CORKSCREW_TOTAL_SIZE); | |
469 | return 0; | |
470 | } | |
471 | return 1; | |
472 | } | |
473 | ||
474 | static void cleanup_card(struct net_device *dev) | |
475 | { | |
476 | struct corkscrew_private *vp = netdev_priv(dev); | |
477 | list_del_init(&vp->list); | |
478 | if (dev->dma) | |
479 | free_dma(dev->dma); | |
480 | outw(TotalReset, dev->base_addr + EL3_CMD); | |
481 | release_region(dev->base_addr, CORKSCREW_TOTAL_SIZE); | |
482 | if (vp->dev) | |
483 | pnp_device_detach(to_pnp_dev(vp->dev)); | |
484 | } | |
485 | ||
486 | static struct net_device *corkscrew_scan(int unit) | |
487 | { | |
488 | struct net_device *dev; | |
489 | static int cards_found = 0; | |
490 | static int ioaddr; | |
491 | int err; | |
492 | #ifdef __ISAPNP__ | |
493 | short i; | |
494 | static int pnp_cards; | |
495 | #endif | |
496 | ||
497 | dev = alloc_etherdev(sizeof(struct corkscrew_private)); | |
498 | if (!dev) | |
499 | return ERR_PTR(-ENOMEM); | |
500 | ||
501 | if (unit >= 0) { | |
502 | sprintf(dev->name, "eth%d", unit); | |
503 | netdev_boot_setup_check(dev); | |
504 | } | |
505 | ||
506 | SET_MODULE_OWNER(dev); | |
507 | ||
508 | #ifdef __ISAPNP__ | |
509 | if(nopnp == 1) | |
510 | goto no_pnp; | |
511 | for(i=0; corkscrew_isapnp_adapters[i].vendor != 0; i++) { | |
512 | struct pnp_dev *idev = NULL; | |
513 | int irq; | |
514 | while((idev = pnp_find_dev(NULL, | |
515 | corkscrew_isapnp_adapters[i].vendor, | |
516 | corkscrew_isapnp_adapters[i].function, | |
517 | idev))) { | |
518 | ||
519 | if (pnp_device_attach(idev) < 0) | |
520 | continue; | |
521 | if (pnp_activate_dev(idev) < 0) { | |
522 | printk("pnp activate failed (out of resources?)\n"); | |
523 | pnp_device_detach(idev); | |
524 | continue; | |
525 | } | |
526 | if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) { | |
527 | pnp_device_detach(idev); | |
528 | continue; | |
529 | } | |
530 | ioaddr = pnp_port_start(idev, 0); | |
531 | irq = pnp_irq(idev, 0); | |
532 | if (!check_device(ioaddr)) { | |
533 | pnp_device_detach(idev); | |
534 | continue; | |
535 | } | |
536 | if(corkscrew_debug) | |
537 | printk ("ISAPNP reports %s at i/o 0x%x, irq %d\n", | |
538 | (char*) corkscrew_isapnp_adapters[i].driver_data, ioaddr, irq); | |
539 | printk(KERN_INFO "3c515 Resource configuration register %#4.4x, DCR %4.4x.\n", | |
540 | inl(ioaddr + 0x2002), inw(ioaddr + 0x2000)); | |
541 | /* irq = inw(ioaddr + 0x2002) & 15; */ /* Use the irq from isapnp */ | |
1da177e4 LT |
542 | SET_NETDEV_DEV(dev, &idev->dev); |
543 | pnp_cards++; | |
b1fc5505 | 544 | err = corkscrew_setup(dev, ioaddr, idev, cards_found++); |
1da177e4 LT |
545 | if (!err) |
546 | return dev; | |
547 | cleanup_card(dev); | |
548 | } | |
549 | } | |
550 | no_pnp: | |
551 | #endif /* __ISAPNP__ */ | |
552 | ||
553 | /* Check all locations on the ISA bus -- evil! */ | |
554 | for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x20) { | |
555 | if (!check_device(ioaddr)) | |
556 | continue; | |
557 | ||
558 | printk(KERN_INFO "3c515 Resource configuration register %#4.4x, DCR %4.4x.\n", | |
559 | inl(ioaddr + 0x2002), inw(ioaddr + 0x2000)); | |
b1fc5505 | 560 | err = corkscrew_setup(dev, ioaddr, NULL, cards_found++); |
1da177e4 LT |
561 | if (!err) |
562 | return dev; | |
563 | cleanup_card(dev); | |
564 | } | |
565 | free_netdev(dev); | |
566 | return NULL; | |
567 | } | |
568 | ||
b1fc5505 | 569 | static int corkscrew_setup(struct net_device *dev, int ioaddr, |
1da177e4 LT |
570 | struct pnp_dev *idev, int card_number) |
571 | { | |
572 | struct corkscrew_private *vp = netdev_priv(dev); | |
573 | unsigned int eeprom[0x40], checksum = 0; /* EEPROM contents */ | |
574 | int i; | |
575 | int irq; | |
576 | ||
577 | if (idev) { | |
578 | irq = pnp_irq(idev, 0); | |
579 | vp->dev = &idev->dev; | |
580 | } else { | |
581 | irq = inw(ioaddr + 0x2002) & 15; | |
582 | } | |
583 | ||
584 | dev->base_addr = ioaddr; | |
585 | dev->irq = irq; | |
586 | dev->dma = inw(ioaddr + 0x2000) & 7; | |
587 | vp->product_name = "3c515"; | |
588 | vp->options = dev->mem_start; | |
589 | vp->our_dev = dev; | |
590 | ||
591 | if (!vp->options) { | |
592 | if (card_number >= MAX_UNITS) | |
593 | vp->options = -1; | |
594 | else | |
595 | vp->options = options[card_number]; | |
596 | } | |
597 | ||
598 | if (vp->options >= 0) { | |
599 | vp->media_override = vp->options & 7; | |
600 | if (vp->media_override == 2) | |
601 | vp->media_override = 0; | |
602 | vp->full_duplex = (vp->options & 8) ? 1 : 0; | |
603 | vp->bus_master = (vp->options & 16) ? 1 : 0; | |
604 | } else { | |
605 | vp->media_override = 7; | |
606 | vp->full_duplex = 0; | |
607 | vp->bus_master = 0; | |
608 | } | |
609 | #ifdef MODULE | |
610 | list_add(&vp->list, &root_corkscrew_dev); | |
611 | #endif | |
612 | ||
613 | printk(KERN_INFO "%s: 3Com %s at %#3x,", dev->name, vp->product_name, ioaddr); | |
614 | ||
615 | spin_lock_init(&vp->lock); | |
616 | ||
617 | /* Read the station address from the EEPROM. */ | |
618 | EL3WINDOW(0); | |
619 | for (i = 0; i < 0x18; i++) { | |
620 | short *phys_addr = (short *) dev->dev_addr; | |
621 | int timer; | |
622 | outw(EEPROM_Read + i, ioaddr + Wn0EepromCmd); | |
623 | /* Pause for at least 162 us. for the read to take place. */ | |
624 | for (timer = 4; timer >= 0; timer--) { | |
625 | udelay(162); | |
626 | if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0) | |
627 | break; | |
628 | } | |
629 | eeprom[i] = inw(ioaddr + Wn0EepromData); | |
630 | checksum ^= eeprom[i]; | |
631 | if (i < 3) | |
632 | phys_addr[i] = htons(eeprom[i]); | |
633 | } | |
634 | checksum = (checksum ^ (checksum >> 8)) & 0xff; | |
635 | if (checksum != 0x00) | |
636 | printk(" ***INVALID CHECKSUM %4.4x*** ", checksum); | |
637 | for (i = 0; i < 6; i++) | |
638 | printk("%c%2.2x", i ? ':' : ' ', dev->dev_addr[i]); | |
639 | if (eeprom[16] == 0x11c7) { /* Corkscrew */ | |
640 | if (request_dma(dev->dma, "3c515")) { | |
641 | printk(", DMA %d allocation failed", dev->dma); | |
642 | dev->dma = 0; | |
643 | } else | |
644 | printk(", DMA %d", dev->dma); | |
645 | } | |
646 | printk(", IRQ %d\n", dev->irq); | |
647 | /* Tell them about an invalid IRQ. */ | |
648 | if (corkscrew_debug && (dev->irq <= 0 || dev->irq > 15)) | |
649 | printk(KERN_WARNING " *** Warning: this IRQ is unlikely to work! ***\n"); | |
650 | ||
651 | { | |
652 | char *ram_split[] = { "5:3", "3:1", "1:1", "3:5" }; | |
653 | union wn3_config config; | |
654 | EL3WINDOW(3); | |
655 | vp->available_media = inw(ioaddr + Wn3_Options); | |
656 | config.i = inl(ioaddr + Wn3_Config); | |
657 | if (corkscrew_debug > 1) | |
658 | printk(KERN_INFO " Internal config register is %4.4x, transceivers %#x.\n", | |
659 | config.i, inw(ioaddr + Wn3_Options)); | |
660 | printk(KERN_INFO " %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n", | |
661 | 8 << config.u.ram_size, | |
662 | config.u.ram_width ? "word" : "byte", | |
663 | ram_split[config.u.ram_split], | |
664 | config.u.autoselect ? "autoselect/" : "", | |
665 | media_tbl[config.u.xcvr].name); | |
666 | dev->if_port = config.u.xcvr; | |
667 | vp->default_media = config.u.xcvr; | |
668 | vp->autoselect = config.u.autoselect; | |
669 | } | |
670 | if (vp->media_override != 7) { | |
671 | printk(KERN_INFO " Media override to transceiver type %d (%s).\n", | |
672 | vp->media_override, | |
673 | media_tbl[vp->media_override].name); | |
674 | dev->if_port = vp->media_override; | |
675 | } | |
676 | ||
677 | vp->capabilities = eeprom[16]; | |
678 | vp->full_bus_master_tx = (vp->capabilities & 0x20) ? 1 : 0; | |
679 | /* Rx is broken at 10mbps, so we always disable it. */ | |
680 | /* vp->full_bus_master_rx = 0; */ | |
681 | vp->full_bus_master_rx = (vp->capabilities & 0x20) ? 1 : 0; | |
682 | ||
683 | /* The 3c51x-specific entries in the device structure. */ | |
684 | dev->open = &corkscrew_open; | |
685 | dev->hard_start_xmit = &corkscrew_start_xmit; | |
686 | dev->tx_timeout = &corkscrew_timeout; | |
687 | dev->watchdog_timeo = (400 * HZ) / 1000; | |
688 | dev->stop = &corkscrew_close; | |
689 | dev->get_stats = &corkscrew_get_stats; | |
690 | dev->set_multicast_list = &set_rx_mode; | |
691 | dev->ethtool_ops = &netdev_ethtool_ops; | |
b1fc5505 HX |
692 | |
693 | return register_netdev(dev); | |
1da177e4 LT |
694 | } |
695 | \f | |
696 | ||
697 | static int corkscrew_open(struct net_device *dev) | |
698 | { | |
699 | int ioaddr = dev->base_addr; | |
700 | struct corkscrew_private *vp = netdev_priv(dev); | |
701 | union wn3_config config; | |
702 | int i; | |
703 | ||
704 | /* Before initializing select the active media port. */ | |
705 | EL3WINDOW(3); | |
706 | if (vp->full_duplex) | |
707 | outb(0x20, ioaddr + Wn3_MAC_Ctrl); /* Set the full-duplex bit. */ | |
708 | config.i = inl(ioaddr + Wn3_Config); | |
709 | ||
710 | if (vp->media_override != 7) { | |
711 | if (corkscrew_debug > 1) | |
712 | printk(KERN_INFO "%s: Media override to transceiver %d (%s).\n", | |
713 | dev->name, vp->media_override, | |
714 | media_tbl[vp->media_override].name); | |
715 | dev->if_port = vp->media_override; | |
716 | } else if (vp->autoselect) { | |
717 | /* Find first available media type, starting with 100baseTx. */ | |
718 | dev->if_port = 4; | |
719 | while (!(vp->available_media & media_tbl[dev->if_port].mask)) | |
720 | dev->if_port = media_tbl[dev->if_port].next; | |
721 | ||
722 | if (corkscrew_debug > 1) | |
723 | printk("%s: Initial media type %s.\n", | |
724 | dev->name, media_tbl[dev->if_port].name); | |
725 | ||
726 | init_timer(&vp->timer); | |
727 | vp->timer.expires = jiffies + media_tbl[dev->if_port].wait; | |
728 | vp->timer.data = (unsigned long) dev; | |
729 | vp->timer.function = &corkscrew_timer; /* timer handler */ | |
730 | add_timer(&vp->timer); | |
731 | } else | |
732 | dev->if_port = vp->default_media; | |
733 | ||
734 | config.u.xcvr = dev->if_port; | |
735 | outl(config.i, ioaddr + Wn3_Config); | |
736 | ||
737 | if (corkscrew_debug > 1) { | |
738 | printk("%s: corkscrew_open() InternalConfig %8.8x.\n", | |
739 | dev->name, config.i); | |
740 | } | |
741 | ||
742 | outw(TxReset, ioaddr + EL3_CMD); | |
743 | for (i = 20; i >= 0; i--) | |
744 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
745 | break; | |
746 | ||
747 | outw(RxReset, ioaddr + EL3_CMD); | |
748 | /* Wait a few ticks for the RxReset command to complete. */ | |
749 | for (i = 20; i >= 0; i--) | |
750 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
751 | break; | |
752 | ||
753 | outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD); | |
754 | ||
755 | /* Use the now-standard shared IRQ implementation. */ | |
756 | if (vp->capabilities == 0x11c7) { | |
757 | /* Corkscrew: Cannot share ISA resources. */ | |
758 | if (dev->irq == 0 | |
759 | || dev->dma == 0 | |
760 | || request_irq(dev->irq, &corkscrew_interrupt, 0, | |
761 | vp->product_name, dev)) return -EAGAIN; | |
762 | enable_dma(dev->dma); | |
763 | set_dma_mode(dev->dma, DMA_MODE_CASCADE); | |
764 | } else if (request_irq(dev->irq, &corkscrew_interrupt, SA_SHIRQ, | |
765 | vp->product_name, dev)) { | |
766 | return -EAGAIN; | |
767 | } | |
768 | ||
769 | if (corkscrew_debug > 1) { | |
770 | EL3WINDOW(4); | |
771 | printk("%s: corkscrew_open() irq %d media status %4.4x.\n", | |
772 | dev->name, dev->irq, inw(ioaddr + Wn4_Media)); | |
773 | } | |
774 | ||
775 | /* Set the station address and mask in window 2 each time opened. */ | |
776 | EL3WINDOW(2); | |
777 | for (i = 0; i < 6; i++) | |
778 | outb(dev->dev_addr[i], ioaddr + i); | |
779 | for (; i < 12; i += 2) | |
780 | outw(0, ioaddr + i); | |
781 | ||
782 | if (dev->if_port == 3) | |
783 | /* Start the thinnet transceiver. We should really wait 50ms... */ | |
784 | outw(StartCoax, ioaddr + EL3_CMD); | |
785 | EL3WINDOW(4); | |
786 | outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP | Media_SQE)) | | |
787 | media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media); | |
788 | ||
789 | /* Switch to the stats window, and clear all stats by reading. */ | |
790 | outw(StatsDisable, ioaddr + EL3_CMD); | |
791 | EL3WINDOW(6); | |
792 | for (i = 0; i < 10; i++) | |
793 | inb(ioaddr + i); | |
794 | inw(ioaddr + 10); | |
795 | inw(ioaddr + 12); | |
796 | /* New: On the Vortex we must also clear the BadSSD counter. */ | |
797 | EL3WINDOW(4); | |
798 | inb(ioaddr + 12); | |
799 | /* ..and on the Boomerang we enable the extra statistics bits. */ | |
800 | outw(0x0040, ioaddr + Wn4_NetDiag); | |
801 | ||
802 | /* Switch to register set 7 for normal use. */ | |
803 | EL3WINDOW(7); | |
804 | ||
805 | if (vp->full_bus_master_rx) { /* Boomerang bus master. */ | |
806 | vp->cur_rx = vp->dirty_rx = 0; | |
807 | if (corkscrew_debug > 2) | |
808 | printk("%s: Filling in the Rx ring.\n", | |
809 | dev->name); | |
810 | for (i = 0; i < RX_RING_SIZE; i++) { | |
811 | struct sk_buff *skb; | |
812 | if (i < (RX_RING_SIZE - 1)) | |
813 | vp->rx_ring[i].next = | |
814 | isa_virt_to_bus(&vp->rx_ring[i + 1]); | |
815 | else | |
816 | vp->rx_ring[i].next = 0; | |
817 | vp->rx_ring[i].status = 0; /* Clear complete bit. */ | |
818 | vp->rx_ring[i].length = PKT_BUF_SZ | 0x80000000; | |
819 | skb = dev_alloc_skb(PKT_BUF_SZ); | |
820 | vp->rx_skbuff[i] = skb; | |
821 | if (skb == NULL) | |
822 | break; /* Bad news! */ | |
823 | skb->dev = dev; /* Mark as being used by this device. */ | |
824 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
689be439 | 825 | vp->rx_ring[i].addr = isa_virt_to_bus(skb->data); |
1da177e4 LT |
826 | } |
827 | vp->rx_ring[i - 1].next = isa_virt_to_bus(&vp->rx_ring[0]); /* Wrap the ring. */ | |
828 | outl(isa_virt_to_bus(&vp->rx_ring[0]), ioaddr + UpListPtr); | |
829 | } | |
830 | if (vp->full_bus_master_tx) { /* Boomerang bus master Tx. */ | |
831 | vp->cur_tx = vp->dirty_tx = 0; | |
832 | outb(PKT_BUF_SZ >> 8, ioaddr + TxFreeThreshold); /* Room for a packet. */ | |
833 | /* Clear the Tx ring. */ | |
834 | for (i = 0; i < TX_RING_SIZE; i++) | |
835 | vp->tx_skbuff[i] = NULL; | |
836 | outl(0, ioaddr + DownListPtr); | |
837 | } | |
838 | /* Set receiver mode: presumably accept b-case and phys addr only. */ | |
839 | set_rx_mode(dev); | |
840 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ | |
841 | ||
842 | netif_start_queue(dev); | |
843 | ||
844 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ | |
845 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ | |
846 | /* Allow status bits to be seen. */ | |
847 | outw(SetStatusEnb | AdapterFailure | IntReq | StatsFull | | |
848 | (vp->full_bus_master_tx ? DownComplete : TxAvailable) | | |
849 | (vp->full_bus_master_rx ? UpComplete : RxComplete) | | |
850 | (vp->bus_master ? DMADone : 0), ioaddr + EL3_CMD); | |
851 | /* Ack all pending events, and set active indicator mask. */ | |
852 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, | |
853 | ioaddr + EL3_CMD); | |
854 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull | |
855 | | (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete, | |
856 | ioaddr + EL3_CMD); | |
857 | ||
858 | return 0; | |
859 | } | |
860 | ||
861 | static void corkscrew_timer(unsigned long data) | |
862 | { | |
863 | #ifdef AUTOMEDIA | |
864 | struct net_device *dev = (struct net_device *) data; | |
865 | struct corkscrew_private *vp = netdev_priv(dev); | |
866 | int ioaddr = dev->base_addr; | |
867 | unsigned long flags; | |
868 | int ok = 0; | |
869 | ||
870 | if (corkscrew_debug > 1) | |
871 | printk("%s: Media selection timer tick happened, %s.\n", | |
872 | dev->name, media_tbl[dev->if_port].name); | |
873 | ||
874 | spin_lock_irqsave(&vp->lock, flags); | |
875 | ||
876 | { | |
877 | int old_window = inw(ioaddr + EL3_CMD) >> 13; | |
878 | int media_status; | |
879 | EL3WINDOW(4); | |
880 | media_status = inw(ioaddr + Wn4_Media); | |
881 | switch (dev->if_port) { | |
882 | case 0: | |
883 | case 4: | |
884 | case 5: /* 10baseT, 100baseTX, 100baseFX */ | |
885 | if (media_status & Media_LnkBeat) { | |
886 | ok = 1; | |
887 | if (corkscrew_debug > 1) | |
888 | printk("%s: Media %s has link beat, %x.\n", | |
889 | dev->name, | |
890 | media_tbl[dev->if_port].name, | |
891 | media_status); | |
892 | } else if (corkscrew_debug > 1) | |
893 | printk("%s: Media %s is has no link beat, %x.\n", | |
894 | dev->name, | |
895 | media_tbl[dev->if_port].name, | |
896 | media_status); | |
897 | ||
898 | break; | |
899 | default: /* Other media types handled by Tx timeouts. */ | |
900 | if (corkscrew_debug > 1) | |
901 | printk("%s: Media %s is has no indication, %x.\n", | |
902 | dev->name, | |
903 | media_tbl[dev->if_port].name, | |
904 | media_status); | |
905 | ok = 1; | |
906 | } | |
907 | if (!ok) { | |
908 | union wn3_config config; | |
909 | ||
910 | do { | |
911 | dev->if_port = | |
912 | media_tbl[dev->if_port].next; | |
913 | } | |
914 | while (!(vp->available_media & media_tbl[dev->if_port].mask)); | |
915 | ||
916 | if (dev->if_port == 8) { /* Go back to default. */ | |
917 | dev->if_port = vp->default_media; | |
918 | if (corkscrew_debug > 1) | |
919 | printk("%s: Media selection failing, using default %s port.\n", | |
920 | dev->name, | |
921 | media_tbl[dev->if_port].name); | |
922 | } else { | |
923 | if (corkscrew_debug > 1) | |
924 | printk("%s: Media selection failed, now trying %s port.\n", | |
925 | dev->name, | |
926 | media_tbl[dev->if_port].name); | |
927 | vp->timer.expires = jiffies + media_tbl[dev->if_port].wait; | |
928 | add_timer(&vp->timer); | |
929 | } | |
930 | outw((media_status & ~(Media_10TP | Media_SQE)) | | |
931 | media_tbl[dev->if_port].media_bits, | |
932 | ioaddr + Wn4_Media); | |
933 | ||
934 | EL3WINDOW(3); | |
935 | config.i = inl(ioaddr + Wn3_Config); | |
936 | config.u.xcvr = dev->if_port; | |
937 | outl(config.i, ioaddr + Wn3_Config); | |
938 | ||
939 | outw(dev->if_port == 3 ? StartCoax : StopCoax, | |
940 | ioaddr + EL3_CMD); | |
941 | } | |
942 | EL3WINDOW(old_window); | |
943 | } | |
944 | ||
945 | spin_unlock_irqrestore(&vp->lock, flags); | |
946 | if (corkscrew_debug > 1) | |
947 | printk("%s: Media selection timer finished, %s.\n", | |
948 | dev->name, media_tbl[dev->if_port].name); | |
949 | ||
950 | #endif /* AUTOMEDIA */ | |
951 | return; | |
952 | } | |
953 | ||
954 | static void corkscrew_timeout(struct net_device *dev) | |
955 | { | |
956 | int i; | |
957 | struct corkscrew_private *vp = netdev_priv(dev); | |
958 | int ioaddr = dev->base_addr; | |
959 | ||
960 | printk(KERN_WARNING | |
961 | "%s: transmit timed out, tx_status %2.2x status %4.4x.\n", | |
962 | dev->name, inb(ioaddr + TxStatus), | |
963 | inw(ioaddr + EL3_STATUS)); | |
964 | /* Slight code bloat to be user friendly. */ | |
965 | if ((inb(ioaddr + TxStatus) & 0x88) == 0x88) | |
966 | printk(KERN_WARNING | |
967 | "%s: Transmitter encountered 16 collisions -- network" | |
968 | " network cable problem?\n", dev->name); | |
969 | #ifndef final_version | |
970 | printk(" Flags; bus-master %d, full %d; dirty %d current %d.\n", | |
971 | vp->full_bus_master_tx, vp->tx_full, vp->dirty_tx, | |
972 | vp->cur_tx); | |
973 | printk(" Down list %8.8x vs. %p.\n", inl(ioaddr + DownListPtr), | |
974 | &vp->tx_ring[0]); | |
975 | for (i = 0; i < TX_RING_SIZE; i++) { | |
976 | printk(" %d: %p length %8.8x status %8.8x\n", i, | |
977 | &vp->tx_ring[i], | |
978 | vp->tx_ring[i].length, vp->tx_ring[i].status); | |
979 | } | |
980 | #endif | |
981 | /* Issue TX_RESET and TX_START commands. */ | |
982 | outw(TxReset, ioaddr + EL3_CMD); | |
983 | for (i = 20; i >= 0; i--) | |
984 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
985 | break; | |
986 | outw(TxEnable, ioaddr + EL3_CMD); | |
987 | dev->trans_start = jiffies; | |
988 | vp->stats.tx_errors++; | |
989 | vp->stats.tx_dropped++; | |
990 | netif_wake_queue(dev); | |
991 | } | |
992 | ||
993 | static int corkscrew_start_xmit(struct sk_buff *skb, | |
994 | struct net_device *dev) | |
995 | { | |
996 | struct corkscrew_private *vp = netdev_priv(dev); | |
997 | int ioaddr = dev->base_addr; | |
998 | ||
999 | /* Block a timer-based transmit from overlapping. */ | |
1000 | ||
1001 | netif_stop_queue(dev); | |
1002 | ||
1003 | if (vp->full_bus_master_tx) { /* BOOMERANG bus-master */ | |
1004 | /* Calculate the next Tx descriptor entry. */ | |
1005 | int entry = vp->cur_tx % TX_RING_SIZE; | |
1006 | struct boom_tx_desc *prev_entry; | |
1007 | unsigned long flags, i; | |
1008 | ||
1009 | if (vp->tx_full) /* No room to transmit with */ | |
1010 | return 1; | |
1011 | if (vp->cur_tx != 0) | |
1012 | prev_entry = &vp->tx_ring[(vp->cur_tx - 1) % TX_RING_SIZE]; | |
1013 | else | |
1014 | prev_entry = NULL; | |
1015 | if (corkscrew_debug > 3) | |
1016 | printk("%s: Trying to send a packet, Tx index %d.\n", | |
1017 | dev->name, vp->cur_tx); | |
1018 | /* vp->tx_full = 1; */ | |
1019 | vp->tx_skbuff[entry] = skb; | |
1020 | vp->tx_ring[entry].next = 0; | |
1021 | vp->tx_ring[entry].addr = isa_virt_to_bus(skb->data); | |
1022 | vp->tx_ring[entry].length = skb->len | 0x80000000; | |
1023 | vp->tx_ring[entry].status = skb->len | 0x80000000; | |
1024 | ||
1025 | spin_lock_irqsave(&vp->lock, flags); | |
1026 | outw(DownStall, ioaddr + EL3_CMD); | |
1027 | /* Wait for the stall to complete. */ | |
1028 | for (i = 20; i >= 0; i--) | |
1029 | if ((inw(ioaddr + EL3_STATUS) & CmdInProgress) == 0) | |
1030 | break; | |
1031 | if (prev_entry) | |
1032 | prev_entry->next = isa_virt_to_bus(&vp->tx_ring[entry]); | |
1033 | if (inl(ioaddr + DownListPtr) == 0) { | |
1034 | outl(isa_virt_to_bus(&vp->tx_ring[entry]), | |
1035 | ioaddr + DownListPtr); | |
1036 | queued_packet++; | |
1037 | } | |
1038 | outw(DownUnstall, ioaddr + EL3_CMD); | |
1039 | spin_unlock_irqrestore(&vp->lock, flags); | |
1040 | ||
1041 | vp->cur_tx++; | |
1042 | if (vp->cur_tx - vp->dirty_tx > TX_RING_SIZE - 1) | |
1043 | vp->tx_full = 1; | |
1044 | else { /* Clear previous interrupt enable. */ | |
1045 | if (prev_entry) | |
1046 | prev_entry->status &= ~0x80000000; | |
1047 | netif_wake_queue(dev); | |
1048 | } | |
1049 | dev->trans_start = jiffies; | |
1050 | return 0; | |
1051 | } | |
1052 | /* Put out the doubleword header... */ | |
1053 | outl(skb->len, ioaddr + TX_FIFO); | |
1054 | vp->stats.tx_bytes += skb->len; | |
1055 | #ifdef VORTEX_BUS_MASTER | |
1056 | if (vp->bus_master) { | |
1057 | /* Set the bus-master controller to transfer the packet. */ | |
1058 | outl((int) (skb->data), ioaddr + Wn7_MasterAddr); | |
1059 | outw((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen); | |
1060 | vp->tx_skb = skb; | |
1061 | outw(StartDMADown, ioaddr + EL3_CMD); | |
1062 | /* queue will be woken at the DMADone interrupt. */ | |
1063 | } else { | |
1064 | /* ... and the packet rounded to a doubleword. */ | |
1065 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); | |
1066 | dev_kfree_skb(skb); | |
1067 | if (inw(ioaddr + TxFree) > 1536) { | |
1068 | netif_wake_queue(dev); | |
1069 | } else | |
1070 | /* Interrupt us when the FIFO has room for max-sized packet. */ | |
1071 | outw(SetTxThreshold + (1536 >> 2), | |
1072 | ioaddr + EL3_CMD); | |
1073 | } | |
1074 | #else | |
1075 | /* ... and the packet rounded to a doubleword. */ | |
1076 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); | |
1077 | dev_kfree_skb(skb); | |
1078 | if (inw(ioaddr + TxFree) > 1536) { | |
1079 | netif_wake_queue(dev); | |
1080 | } else | |
1081 | /* Interrupt us when the FIFO has room for max-sized packet. */ | |
1082 | outw(SetTxThreshold + (1536 >> 2), ioaddr + EL3_CMD); | |
1083 | #endif /* bus master */ | |
1084 | ||
1085 | dev->trans_start = jiffies; | |
1086 | ||
1087 | /* Clear the Tx status stack. */ | |
1088 | { | |
1089 | short tx_status; | |
1090 | int i = 4; | |
1091 | ||
1092 | while (--i > 0 && (tx_status = inb(ioaddr + TxStatus)) > 0) { | |
1093 | if (tx_status & 0x3C) { /* A Tx-disabling error occurred. */ | |
1094 | if (corkscrew_debug > 2) | |
1095 | printk("%s: Tx error, status %2.2x.\n", | |
1096 | dev->name, tx_status); | |
1097 | if (tx_status & 0x04) | |
1098 | vp->stats.tx_fifo_errors++; | |
1099 | if (tx_status & 0x38) | |
1100 | vp->stats.tx_aborted_errors++; | |
1101 | if (tx_status & 0x30) { | |
1102 | int j; | |
1103 | outw(TxReset, ioaddr + EL3_CMD); | |
1104 | for (j = 20; j >= 0; j--) | |
1105 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
1106 | break; | |
1107 | } | |
1108 | outw(TxEnable, ioaddr + EL3_CMD); | |
1109 | } | |
1110 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ | |
1111 | } | |
1112 | } | |
1113 | return 0; | |
1114 | } | |
1115 | ||
1116 | /* The interrupt handler does all of the Rx thread work and cleans up | |
1117 | after the Tx thread. */ | |
1118 | ||
1119 | static irqreturn_t corkscrew_interrupt(int irq, void *dev_id, | |
1120 | struct pt_regs *regs) | |
1121 | { | |
1122 | /* Use the now-standard shared IRQ implementation. */ | |
1123 | struct net_device *dev = dev_id; | |
1124 | struct corkscrew_private *lp = netdev_priv(dev); | |
1125 | int ioaddr, status; | |
1126 | int latency; | |
1127 | int i = max_interrupt_work; | |
1128 | ||
1129 | ioaddr = dev->base_addr; | |
1130 | latency = inb(ioaddr + Timer); | |
1131 | ||
1132 | spin_lock(&lp->lock); | |
1133 | ||
1134 | status = inw(ioaddr + EL3_STATUS); | |
1135 | ||
1136 | if (corkscrew_debug > 4) | |
1137 | printk("%s: interrupt, status %4.4x, timer %d.\n", | |
1138 | dev->name, status, latency); | |
1139 | if ((status & 0xE000) != 0xE000) { | |
1140 | static int donedidthis; | |
1141 | /* Some interrupt controllers store a bogus interrupt from boot-time. | |
1142 | Ignore a single early interrupt, but don't hang the machine for | |
1143 | other interrupt problems. */ | |
1144 | if (donedidthis++ > 100) { | |
1145 | printk(KERN_ERR "%s: Bogus interrupt, bailing. Status %4.4x, start=%d.\n", | |
1146 | dev->name, status, netif_running(dev)); | |
1147 | free_irq(dev->irq, dev); | |
1148 | dev->irq = -1; | |
1149 | } | |
1150 | } | |
1151 | ||
1152 | do { | |
1153 | if (corkscrew_debug > 5) | |
1154 | printk("%s: In interrupt loop, status %4.4x.\n", | |
1155 | dev->name, status); | |
1156 | if (status & RxComplete) | |
1157 | corkscrew_rx(dev); | |
1158 | ||
1159 | if (status & TxAvailable) { | |
1160 | if (corkscrew_debug > 5) | |
1161 | printk(" TX room bit was handled.\n"); | |
1162 | /* There's room in the FIFO for a full-sized packet. */ | |
1163 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); | |
1164 | netif_wake_queue(dev); | |
1165 | } | |
1166 | if (status & DownComplete) { | |
1167 | unsigned int dirty_tx = lp->dirty_tx; | |
1168 | ||
1169 | while (lp->cur_tx - dirty_tx > 0) { | |
1170 | int entry = dirty_tx % TX_RING_SIZE; | |
1171 | if (inl(ioaddr + DownListPtr) == isa_virt_to_bus(&lp->tx_ring[entry])) | |
1172 | break; /* It still hasn't been processed. */ | |
1173 | if (lp->tx_skbuff[entry]) { | |
1174 | dev_kfree_skb_irq(lp->tx_skbuff[entry]); | |
1175 | lp->tx_skbuff[entry] = NULL; | |
1176 | } | |
1177 | dirty_tx++; | |
1178 | } | |
1179 | lp->dirty_tx = dirty_tx; | |
1180 | outw(AckIntr | DownComplete, ioaddr + EL3_CMD); | |
1181 | if (lp->tx_full && (lp->cur_tx - dirty_tx <= TX_RING_SIZE - 1)) { | |
1182 | lp->tx_full = 0; | |
1183 | netif_wake_queue(dev); | |
1184 | } | |
1185 | } | |
1186 | #ifdef VORTEX_BUS_MASTER | |
1187 | if (status & DMADone) { | |
1188 | outw(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */ | |
1189 | dev_kfree_skb_irq(lp->tx_skb); /* Release the transferred buffer */ | |
1190 | netif_wake_queue(dev); | |
1191 | } | |
1192 | #endif | |
1193 | if (status & UpComplete) { | |
1194 | boomerang_rx(dev); | |
1195 | outw(AckIntr | UpComplete, ioaddr + EL3_CMD); | |
1196 | } | |
1197 | if (status & (AdapterFailure | RxEarly | StatsFull)) { | |
1198 | /* Handle all uncommon interrupts at once. */ | |
1199 | if (status & RxEarly) { /* Rx early is unused. */ | |
1200 | corkscrew_rx(dev); | |
1201 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); | |
1202 | } | |
1203 | if (status & StatsFull) { /* Empty statistics. */ | |
1204 | static int DoneDidThat; | |
1205 | if (corkscrew_debug > 4) | |
1206 | printk("%s: Updating stats.\n", dev->name); | |
1207 | update_stats(ioaddr, dev); | |
1208 | /* DEBUG HACK: Disable statistics as an interrupt source. */ | |
1209 | /* This occurs when we have the wrong media type! */ | |
1210 | if (DoneDidThat == 0 && inw(ioaddr + EL3_STATUS) & StatsFull) { | |
1211 | int win, reg; | |
1212 | printk("%s: Updating stats failed, disabling stats as an" | |
1213 | " interrupt source.\n", dev->name); | |
1214 | for (win = 0; win < 8; win++) { | |
1215 | EL3WINDOW(win); | |
1216 | printk("\n Vortex window %d:", win); | |
1217 | for (reg = 0; reg < 16; reg++) | |
1218 | printk(" %2.2x", inb(ioaddr + reg)); | |
1219 | } | |
1220 | EL3WINDOW(7); | |
1221 | outw(SetIntrEnb | TxAvailable | | |
1222 | RxComplete | AdapterFailure | | |
1223 | UpComplete | DownComplete | | |
1224 | TxComplete, ioaddr + EL3_CMD); | |
1225 | DoneDidThat++; | |
1226 | } | |
1227 | } | |
1228 | if (status & AdapterFailure) { | |
1229 | /* Adapter failure requires Rx reset and reinit. */ | |
1230 | outw(RxReset, ioaddr + EL3_CMD); | |
1231 | /* Set the Rx filter to the current state. */ | |
1232 | set_rx_mode(dev); | |
1233 | outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */ | |
1234 | outw(AckIntr | AdapterFailure, | |
1235 | ioaddr + EL3_CMD); | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | if (--i < 0) { | |
1240 | printk(KERN_ERR "%s: Too much work in interrupt, status %4.4x. " | |
1241 | "Disabling functions (%4.4x).\n", dev->name, | |
1242 | status, SetStatusEnb | ((~status) & 0x7FE)); | |
1243 | /* Disable all pending interrupts. */ | |
1244 | outw(SetStatusEnb | ((~status) & 0x7FE), ioaddr + EL3_CMD); | |
1245 | outw(AckIntr | 0x7FF, ioaddr + EL3_CMD); | |
1246 | break; | |
1247 | } | |
1248 | /* Acknowledge the IRQ. */ | |
1249 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); | |
1250 | ||
1251 | } while ((status = inw(ioaddr + EL3_STATUS)) & (IntLatch | RxComplete)); | |
1252 | ||
1253 | spin_unlock(&lp->lock); | |
1254 | ||
1255 | if (corkscrew_debug > 4) | |
1256 | printk("%s: exiting interrupt, status %4.4x.\n", dev->name, status); | |
1257 | return IRQ_HANDLED; | |
1258 | } | |
1259 | ||
1260 | static int corkscrew_rx(struct net_device *dev) | |
1261 | { | |
1262 | struct corkscrew_private *vp = netdev_priv(dev); | |
1263 | int ioaddr = dev->base_addr; | |
1264 | int i; | |
1265 | short rx_status; | |
1266 | ||
1267 | if (corkscrew_debug > 5) | |
1268 | printk(" In rx_packet(), status %4.4x, rx_status %4.4x.\n", | |
1269 | inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus)); | |
1270 | while ((rx_status = inw(ioaddr + RxStatus)) > 0) { | |
1271 | if (rx_status & 0x4000) { /* Error, update stats. */ | |
1272 | unsigned char rx_error = inb(ioaddr + RxErrors); | |
1273 | if (corkscrew_debug > 2) | |
1274 | printk(" Rx error: status %2.2x.\n", | |
1275 | rx_error); | |
1276 | vp->stats.rx_errors++; | |
1277 | if (rx_error & 0x01) | |
1278 | vp->stats.rx_over_errors++; | |
1279 | if (rx_error & 0x02) | |
1280 | vp->stats.rx_length_errors++; | |
1281 | if (rx_error & 0x04) | |
1282 | vp->stats.rx_frame_errors++; | |
1283 | if (rx_error & 0x08) | |
1284 | vp->stats.rx_crc_errors++; | |
1285 | if (rx_error & 0x10) | |
1286 | vp->stats.rx_length_errors++; | |
1287 | } else { | |
1288 | /* The packet length: up to 4.5K!. */ | |
1289 | short pkt_len = rx_status & 0x1fff; | |
1290 | struct sk_buff *skb; | |
1291 | ||
1292 | skb = dev_alloc_skb(pkt_len + 5 + 2); | |
1293 | if (corkscrew_debug > 4) | |
1294 | printk("Receiving packet size %d status %4.4x.\n", | |
1295 | pkt_len, rx_status); | |
1296 | if (skb != NULL) { | |
1297 | skb->dev = dev; | |
1298 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
1299 | /* 'skb_put()' points to the start of sk_buff data area. */ | |
1300 | insl(ioaddr + RX_FIFO, | |
1301 | skb_put(skb, pkt_len), | |
1302 | (pkt_len + 3) >> 2); | |
1303 | outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */ | |
1304 | skb->protocol = eth_type_trans(skb, dev); | |
1305 | netif_rx(skb); | |
1306 | dev->last_rx = jiffies; | |
1307 | vp->stats.rx_packets++; | |
1308 | vp->stats.rx_bytes += pkt_len; | |
1309 | /* Wait a limited time to go to next packet. */ | |
1310 | for (i = 200; i >= 0; i--) | |
1311 | if (! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
1312 | break; | |
1313 | continue; | |
1314 | } else if (corkscrew_debug) | |
1315 | printk("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, pkt_len); | |
1316 | } | |
1317 | outw(RxDiscard, ioaddr + EL3_CMD); | |
1318 | vp->stats.rx_dropped++; | |
1319 | /* Wait a limited time to skip this packet. */ | |
1320 | for (i = 200; i >= 0; i--) | |
1321 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
1322 | break; | |
1323 | } | |
1324 | return 0; | |
1325 | } | |
1326 | ||
1327 | static int boomerang_rx(struct net_device *dev) | |
1328 | { | |
1329 | struct corkscrew_private *vp = netdev_priv(dev); | |
1330 | int entry = vp->cur_rx % RX_RING_SIZE; | |
1331 | int ioaddr = dev->base_addr; | |
1332 | int rx_status; | |
1333 | ||
1334 | if (corkscrew_debug > 5) | |
1335 | printk(" In boomerang_rx(), status %4.4x, rx_status %4.4x.\n", | |
1336 | inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus)); | |
1337 | while ((rx_status = vp->rx_ring[entry].status) & RxDComplete) { | |
1338 | if (rx_status & RxDError) { /* Error, update stats. */ | |
1339 | unsigned char rx_error = rx_status >> 16; | |
1340 | if (corkscrew_debug > 2) | |
1341 | printk(" Rx error: status %2.2x.\n", | |
1342 | rx_error); | |
1343 | vp->stats.rx_errors++; | |
1344 | if (rx_error & 0x01) | |
1345 | vp->stats.rx_over_errors++; | |
1346 | if (rx_error & 0x02) | |
1347 | vp->stats.rx_length_errors++; | |
1348 | if (rx_error & 0x04) | |
1349 | vp->stats.rx_frame_errors++; | |
1350 | if (rx_error & 0x08) | |
1351 | vp->stats.rx_crc_errors++; | |
1352 | if (rx_error & 0x10) | |
1353 | vp->stats.rx_length_errors++; | |
1354 | } else { | |
1355 | /* The packet length: up to 4.5K!. */ | |
1356 | short pkt_len = rx_status & 0x1fff; | |
1357 | struct sk_buff *skb; | |
1358 | ||
1359 | vp->stats.rx_bytes += pkt_len; | |
1360 | if (corkscrew_debug > 4) | |
1361 | printk("Receiving packet size %d status %4.4x.\n", | |
1362 | pkt_len, rx_status); | |
1363 | ||
1364 | /* Check if the packet is long enough to just accept without | |
1365 | copying to a properly sized skbuff. */ | |
1366 | if (pkt_len < rx_copybreak | |
1367 | && (skb = dev_alloc_skb(pkt_len + 4)) != 0) { | |
1368 | skb->dev = dev; | |
1369 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
1370 | /* 'skb_put()' points to the start of sk_buff data area. */ | |
1371 | memcpy(skb_put(skb, pkt_len), | |
1372 | isa_bus_to_virt(vp->rx_ring[entry]. | |
1373 | addr), pkt_len); | |
1374 | rx_copy++; | |
1375 | } else { | |
1376 | void *temp; | |
1377 | /* Pass up the skbuff already on the Rx ring. */ | |
1378 | skb = vp->rx_skbuff[entry]; | |
1379 | vp->rx_skbuff[entry] = NULL; | |
1380 | temp = skb_put(skb, pkt_len); | |
1381 | /* Remove this checking code for final release. */ | |
1382 | if (isa_bus_to_virt(vp->rx_ring[entry].addr) != temp) | |
1383 | printk("%s: Warning -- the skbuff addresses do not match" | |
1384 | " in boomerang_rx: %p vs. %p / %p.\n", | |
1385 | dev->name, | |
1386 | isa_bus_to_virt(vp-> | |
1387 | rx_ring[entry]. | |
1388 | addr), skb->head, | |
1389 | temp); | |
1390 | rx_nocopy++; | |
1391 | } | |
1392 | skb->protocol = eth_type_trans(skb, dev); | |
1393 | netif_rx(skb); | |
1394 | dev->last_rx = jiffies; | |
1395 | vp->stats.rx_packets++; | |
1396 | } | |
1397 | entry = (++vp->cur_rx) % RX_RING_SIZE; | |
1398 | } | |
1399 | /* Refill the Rx ring buffers. */ | |
1400 | for (; vp->cur_rx - vp->dirty_rx > 0; vp->dirty_rx++) { | |
1401 | struct sk_buff *skb; | |
1402 | entry = vp->dirty_rx % RX_RING_SIZE; | |
1403 | if (vp->rx_skbuff[entry] == NULL) { | |
1404 | skb = dev_alloc_skb(PKT_BUF_SZ); | |
1405 | if (skb == NULL) | |
1406 | break; /* Bad news! */ | |
1407 | skb->dev = dev; /* Mark as being used by this device. */ | |
1408 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
689be439 | 1409 | vp->rx_ring[entry].addr = isa_virt_to_bus(skb->data); |
1da177e4 LT |
1410 | vp->rx_skbuff[entry] = skb; |
1411 | } | |
1412 | vp->rx_ring[entry].status = 0; /* Clear complete bit. */ | |
1413 | } | |
1414 | return 0; | |
1415 | } | |
1416 | ||
1417 | static int corkscrew_close(struct net_device *dev) | |
1418 | { | |
1419 | struct corkscrew_private *vp = netdev_priv(dev); | |
1420 | int ioaddr = dev->base_addr; | |
1421 | int i; | |
1422 | ||
1423 | netif_stop_queue(dev); | |
1424 | ||
1425 | if (corkscrew_debug > 1) { | |
1426 | printk("%s: corkscrew_close() status %4.4x, Tx status %2.2x.\n", | |
1427 | dev->name, inw(ioaddr + EL3_STATUS), | |
1428 | inb(ioaddr + TxStatus)); | |
1429 | printk("%s: corkscrew close stats: rx_nocopy %d rx_copy %d" | |
1430 | " tx_queued %d.\n", dev->name, rx_nocopy, rx_copy, | |
1431 | queued_packet); | |
1432 | } | |
1433 | ||
1434 | del_timer(&vp->timer); | |
1435 | ||
1436 | /* Turn off statistics ASAP. We update lp->stats below. */ | |
1437 | outw(StatsDisable, ioaddr + EL3_CMD); | |
1438 | ||
1439 | /* Disable the receiver and transmitter. */ | |
1440 | outw(RxDisable, ioaddr + EL3_CMD); | |
1441 | outw(TxDisable, ioaddr + EL3_CMD); | |
1442 | ||
1443 | if (dev->if_port == XCVR_10base2) | |
1444 | /* Turn off thinnet power. Green! */ | |
1445 | outw(StopCoax, ioaddr + EL3_CMD); | |
1446 | ||
1447 | free_irq(dev->irq, dev); | |
1448 | ||
1449 | outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); | |
1450 | ||
1451 | update_stats(ioaddr, dev); | |
1452 | if (vp->full_bus_master_rx) { /* Free Boomerang bus master Rx buffers. */ | |
1453 | outl(0, ioaddr + UpListPtr); | |
1454 | for (i = 0; i < RX_RING_SIZE; i++) | |
1455 | if (vp->rx_skbuff[i]) { | |
1456 | dev_kfree_skb(vp->rx_skbuff[i]); | |
1457 | vp->rx_skbuff[i] = NULL; | |
1458 | } | |
1459 | } | |
1460 | if (vp->full_bus_master_tx) { /* Free Boomerang bus master Tx buffers. */ | |
1461 | outl(0, ioaddr + DownListPtr); | |
1462 | for (i = 0; i < TX_RING_SIZE; i++) | |
1463 | if (vp->tx_skbuff[i]) { | |
1464 | dev_kfree_skb(vp->tx_skbuff[i]); | |
1465 | vp->tx_skbuff[i] = NULL; | |
1466 | } | |
1467 | } | |
1468 | ||
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | static struct net_device_stats *corkscrew_get_stats(struct net_device *dev) | |
1473 | { | |
1474 | struct corkscrew_private *vp = netdev_priv(dev); | |
1475 | unsigned long flags; | |
1476 | ||
1477 | if (netif_running(dev)) { | |
1478 | spin_lock_irqsave(&vp->lock, flags); | |
1479 | update_stats(dev->base_addr, dev); | |
1480 | spin_unlock_irqrestore(&vp->lock, flags); | |
1481 | } | |
1482 | return &vp->stats; | |
1483 | } | |
1484 | ||
1485 | /* Update statistics. | |
1486 | Unlike with the EL3 we need not worry about interrupts changing | |
1487 | the window setting from underneath us, but we must still guard | |
1488 | against a race condition with a StatsUpdate interrupt updating the | |
1489 | table. This is done by checking that the ASM (!) code generated uses | |
1490 | atomic updates with '+='. | |
1491 | */ | |
1492 | static void update_stats(int ioaddr, struct net_device *dev) | |
1493 | { | |
1494 | struct corkscrew_private *vp = netdev_priv(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 | vp->stats.tx_carrier_errors += inb(ioaddr + 0); | |
1500 | vp->stats.tx_heartbeat_errors += inb(ioaddr + 1); | |
1501 | /* Multiple collisions. */ inb(ioaddr + 2); | |
1502 | vp->stats.collisions += inb(ioaddr + 3); | |
1503 | vp->stats.tx_window_errors += inb(ioaddr + 4); | |
1504 | vp->stats.rx_fifo_errors += inb(ioaddr + 5); | |
1505 | vp->stats.tx_packets += inb(ioaddr + 6); | |
1506 | vp->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 | printk("%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 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 | \f | |
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 */ | |
1587 | \f | |
1588 | /* | |
1589 | * Local variables: | |
1590 | * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c 3c515.c" | |
1591 | * c-indent-level: 4 | |
1592 | * tab-width: 4 | |
1593 | * End: | |
1594 | */ |