Commit | Line | Data |
---|---|---|
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 | ||
6aa20a22 | 15 | 2000/2/2- Added support for kernel-level ISAPnP |
1da177e4 LT |
16 | by Stephen Frost <sfrost@snowman.net> and Alessandro Zummo |
17 | Cleaned up for 2.3.x/softnet by Jeff Garzik and Alan Cox. | |
6aa20a22 | 18 | |
1da177e4 | 19 | 2001/11/17 - Added ethtool support (jgarzik) |
6aa20a22 | 20 | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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, | |
6aa20a22 JG |
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, | |
1da177e4 LT |
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 | }; | |
b6659824 AV |
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, | |
1da177e4 LT |
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. */ | |
1da177e4 LT |
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. */ | |
6aa20a22 JG |
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}, | |
1da177e4 LT |
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); | |
7d12e780 | 377 | static irqreturn_t corkscrew_interrupt(int irq, void *dev_id); |
1da177e4 LT |
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); | |
7282d491 | 382 | static const struct ethtool_ops netdev_ethtool_ops; |
1da177e4 | 383 | |
6aa20a22 JG |
384 | |
385 | /* | |
1da177e4 LT |
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 | printk(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 | printk(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 | ||
1da177e4 LT |
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 | printk("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 | printk ("ISAPNP reports %s at i/o 0x%x, irq %d\n", | |
535 | (char*) corkscrew_isapnp_adapters[i].driver_data, ioaddr, irq); | |
536 | printk(KERN_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 */ | |
1da177e4 LT |
539 | SET_NETDEV_DEV(dev, &idev->dev); |
540 | pnp_cards++; | |
b1fc5505 | 541 | err = corkscrew_setup(dev, ioaddr, idev, cards_found++); |
1da177e4 LT |
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 | printk(KERN_INFO "3c515 Resource configuration register %#4.4x, DCR %4.4x.\n", | |
556 | inl(ioaddr + 0x2002), inw(ioaddr + 0x2000)); | |
b1fc5505 | 557 | err = corkscrew_setup(dev, ioaddr, NULL, cards_found++); |
1da177e4 LT |
558 | if (!err) |
559 | return dev; | |
560 | cleanup_card(dev); | |
561 | } | |
562 | free_netdev(dev); | |
563 | return NULL; | |
564 | } | |
565 | ||
b1fc5505 | 566 | static int corkscrew_setup(struct net_device *dev, int ioaddr, |
1da177e4 LT |
567 | struct pnp_dev *idev, int card_number) |
568 | { | |
569 | struct corkscrew_private *vp = netdev_priv(dev); | |
570 | unsigned int eeprom[0x40], checksum = 0; /* EEPROM contents */ | |
571 | int i; | |
572 | int irq; | |
0795af57 | 573 | DECLARE_MAC_BUF(mac); |
1da177e4 LT |
574 | |
575 | if (idev) { | |
576 | irq = pnp_irq(idev, 0); | |
577 | vp->dev = &idev->dev; | |
578 | } else { | |
579 | irq = inw(ioaddr + 0x2002) & 15; | |
580 | } | |
581 | ||
582 | dev->base_addr = ioaddr; | |
583 | dev->irq = irq; | |
584 | dev->dma = inw(ioaddr + 0x2000) & 7; | |
585 | vp->product_name = "3c515"; | |
586 | vp->options = dev->mem_start; | |
587 | vp->our_dev = dev; | |
588 | ||
589 | if (!vp->options) { | |
590 | if (card_number >= MAX_UNITS) | |
591 | vp->options = -1; | |
592 | else | |
593 | vp->options = options[card_number]; | |
594 | } | |
595 | ||
596 | if (vp->options >= 0) { | |
597 | vp->media_override = vp->options & 7; | |
598 | if (vp->media_override == 2) | |
599 | vp->media_override = 0; | |
600 | vp->full_duplex = (vp->options & 8) ? 1 : 0; | |
601 | vp->bus_master = (vp->options & 16) ? 1 : 0; | |
602 | } else { | |
603 | vp->media_override = 7; | |
604 | vp->full_duplex = 0; | |
605 | vp->bus_master = 0; | |
606 | } | |
607 | #ifdef MODULE | |
608 | list_add(&vp->list, &root_corkscrew_dev); | |
609 | #endif | |
610 | ||
611 | printk(KERN_INFO "%s: 3Com %s at %#3x,", dev->name, vp->product_name, ioaddr); | |
612 | ||
613 | spin_lock_init(&vp->lock); | |
6aa20a22 | 614 | |
1da177e4 LT |
615 | /* Read the station address from the EEPROM. */ |
616 | EL3WINDOW(0); | |
617 | for (i = 0; i < 0x18; i++) { | |
b6659824 | 618 | __be16 *phys_addr = (__be16 *) dev->dev_addr; |
1da177e4 LT |
619 | int timer; |
620 | outw(EEPROM_Read + i, ioaddr + Wn0EepromCmd); | |
621 | /* Pause for at least 162 us. for the read to take place. */ | |
622 | for (timer = 4; timer >= 0; timer--) { | |
623 | udelay(162); | |
624 | if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0) | |
625 | break; | |
626 | } | |
627 | eeprom[i] = inw(ioaddr + Wn0EepromData); | |
628 | checksum ^= eeprom[i]; | |
629 | if (i < 3) | |
630 | phys_addr[i] = htons(eeprom[i]); | |
631 | } | |
632 | checksum = (checksum ^ (checksum >> 8)) & 0xff; | |
633 | if (checksum != 0x00) | |
634 | printk(" ***INVALID CHECKSUM %4.4x*** ", checksum); | |
0795af57 | 635 | printk(" %s", print_mac(mac, dev->dev_addr)); |
1da177e4 LT |
636 | if (eeprom[16] == 0x11c7) { /* Corkscrew */ |
637 | if (request_dma(dev->dma, "3c515")) { | |
638 | printk(", DMA %d allocation failed", dev->dma); | |
639 | dev->dma = 0; | |
640 | } else | |
641 | printk(", DMA %d", dev->dma); | |
642 | } | |
643 | printk(", IRQ %d\n", dev->irq); | |
644 | /* Tell them about an invalid IRQ. */ | |
645 | if (corkscrew_debug && (dev->irq <= 0 || dev->irq > 15)) | |
646 | printk(KERN_WARNING " *** Warning: this IRQ is unlikely to work! ***\n"); | |
647 | ||
648 | { | |
649 | char *ram_split[] = { "5:3", "3:1", "1:1", "3:5" }; | |
b6659824 | 650 | __u32 config; |
1da177e4 LT |
651 | EL3WINDOW(3); |
652 | vp->available_media = inw(ioaddr + Wn3_Options); | |
b6659824 | 653 | config = inl(ioaddr + Wn3_Config); |
1da177e4 LT |
654 | if (corkscrew_debug > 1) |
655 | printk(KERN_INFO " Internal config register is %4.4x, transceivers %#x.\n", | |
b6659824 | 656 | config, inw(ioaddr + Wn3_Options)); |
1da177e4 | 657 | printk(KERN_INFO " %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n", |
b6659824 AV |
658 | 8 << config & Ram_size, |
659 | config & Ram_width ? "word" : "byte", | |
660 | ram_split[(config & Ram_split) >> Ram_split_shift], | |
661 | config & Autoselect ? "autoselect/" : "", | |
662 | media_tbl[(config & Xcvr) >> Xcvr_shift].name); | |
663 | vp->default_media = (config & Xcvr) >> Xcvr_shift; | |
664 | vp->autoselect = config & Autoselect ? 1 : 0; | |
665 | dev->if_port = vp->default_media; | |
1da177e4 LT |
666 | } |
667 | if (vp->media_override != 7) { | |
668 | printk(KERN_INFO " Media override to transceiver type %d (%s).\n", | |
669 | vp->media_override, | |
670 | media_tbl[vp->media_override].name); | |
671 | dev->if_port = vp->media_override; | |
672 | } | |
673 | ||
674 | vp->capabilities = eeprom[16]; | |
675 | vp->full_bus_master_tx = (vp->capabilities & 0x20) ? 1 : 0; | |
676 | /* Rx is broken at 10mbps, so we always disable it. */ | |
677 | /* vp->full_bus_master_rx = 0; */ | |
678 | vp->full_bus_master_rx = (vp->capabilities & 0x20) ? 1 : 0; | |
679 | ||
680 | /* The 3c51x-specific entries in the device structure. */ | |
681 | dev->open = &corkscrew_open; | |
682 | dev->hard_start_xmit = &corkscrew_start_xmit; | |
683 | dev->tx_timeout = &corkscrew_timeout; | |
684 | dev->watchdog_timeo = (400 * HZ) / 1000; | |
685 | dev->stop = &corkscrew_close; | |
686 | dev->get_stats = &corkscrew_get_stats; | |
687 | dev->set_multicast_list = &set_rx_mode; | |
688 | dev->ethtool_ops = &netdev_ethtool_ops; | |
b1fc5505 | 689 | |
690 | return register_netdev(dev); | |
1da177e4 | 691 | } |
6aa20a22 | 692 | |
1da177e4 LT |
693 | |
694 | static int corkscrew_open(struct net_device *dev) | |
695 | { | |
696 | int ioaddr = dev->base_addr; | |
697 | struct corkscrew_private *vp = netdev_priv(dev); | |
b6659824 | 698 | __u32 config; |
1da177e4 LT |
699 | int i; |
700 | ||
701 | /* Before initializing select the active media port. */ | |
702 | EL3WINDOW(3); | |
703 | if (vp->full_duplex) | |
704 | outb(0x20, ioaddr + Wn3_MAC_Ctrl); /* Set the full-duplex bit. */ | |
b6659824 | 705 | config = inl(ioaddr + Wn3_Config); |
1da177e4 LT |
706 | |
707 | if (vp->media_override != 7) { | |
708 | if (corkscrew_debug > 1) | |
709 | printk(KERN_INFO "%s: Media override to transceiver %d (%s).\n", | |
710 | dev->name, vp->media_override, | |
711 | media_tbl[vp->media_override].name); | |
712 | dev->if_port = vp->media_override; | |
713 | } else if (vp->autoselect) { | |
714 | /* Find first available media type, starting with 100baseTx. */ | |
715 | dev->if_port = 4; | |
6aa20a22 | 716 | while (!(vp->available_media & media_tbl[dev->if_port].mask)) |
1da177e4 LT |
717 | dev->if_port = media_tbl[dev->if_port].next; |
718 | ||
719 | if (corkscrew_debug > 1) | |
720 | printk("%s: Initial media type %s.\n", | |
721 | dev->name, media_tbl[dev->if_port].name); | |
722 | ||
723 | init_timer(&vp->timer); | |
724 | vp->timer.expires = jiffies + media_tbl[dev->if_port].wait; | |
725 | vp->timer.data = (unsigned long) dev; | |
726 | vp->timer.function = &corkscrew_timer; /* timer handler */ | |
727 | add_timer(&vp->timer); | |
728 | } else | |
729 | dev->if_port = vp->default_media; | |
730 | ||
b6659824 AV |
731 | config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift); |
732 | outl(config, ioaddr + Wn3_Config); | |
1da177e4 LT |
733 | |
734 | if (corkscrew_debug > 1) { | |
735 | printk("%s: corkscrew_open() InternalConfig %8.8x.\n", | |
b6659824 | 736 | dev->name, config); |
1da177e4 LT |
737 | } |
738 | ||
739 | outw(TxReset, ioaddr + EL3_CMD); | |
740 | for (i = 20; i >= 0; i--) | |
741 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
742 | break; | |
743 | ||
744 | outw(RxReset, ioaddr + EL3_CMD); | |
745 | /* Wait a few ticks for the RxReset command to complete. */ | |
746 | for (i = 20; i >= 0; i--) | |
747 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
748 | break; | |
749 | ||
750 | outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD); | |
751 | ||
752 | /* Use the now-standard shared IRQ implementation. */ | |
753 | if (vp->capabilities == 0x11c7) { | |
754 | /* Corkscrew: Cannot share ISA resources. */ | |
755 | if (dev->irq == 0 | |
756 | || dev->dma == 0 | |
757 | || request_irq(dev->irq, &corkscrew_interrupt, 0, | |
758 | vp->product_name, dev)) return -EAGAIN; | |
759 | enable_dma(dev->dma); | |
760 | set_dma_mode(dev->dma, DMA_MODE_CASCADE); | |
1fb9df5d | 761 | } else if (request_irq(dev->irq, &corkscrew_interrupt, IRQF_SHARED, |
1da177e4 LT |
762 | vp->product_name, dev)) { |
763 | return -EAGAIN; | |
764 | } | |
765 | ||
766 | if (corkscrew_debug > 1) { | |
767 | EL3WINDOW(4); | |
768 | printk("%s: corkscrew_open() irq %d media status %4.4x.\n", | |
769 | dev->name, dev->irq, inw(ioaddr + Wn4_Media)); | |
770 | } | |
771 | ||
772 | /* Set the station address and mask in window 2 each time opened. */ | |
773 | EL3WINDOW(2); | |
774 | for (i = 0; i < 6; i++) | |
775 | outb(dev->dev_addr[i], ioaddr + i); | |
776 | for (; i < 12; i += 2) | |
777 | outw(0, ioaddr + i); | |
778 | ||
779 | if (dev->if_port == 3) | |
780 | /* Start the thinnet transceiver. We should really wait 50ms... */ | |
781 | outw(StartCoax, ioaddr + EL3_CMD); | |
782 | EL3WINDOW(4); | |
783 | outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP | Media_SQE)) | | |
784 | media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media); | |
785 | ||
786 | /* Switch to the stats window, and clear all stats by reading. */ | |
787 | outw(StatsDisable, ioaddr + EL3_CMD); | |
788 | EL3WINDOW(6); | |
789 | for (i = 0; i < 10; i++) | |
790 | inb(ioaddr + i); | |
791 | inw(ioaddr + 10); | |
792 | inw(ioaddr + 12); | |
793 | /* New: On the Vortex we must also clear the BadSSD counter. */ | |
794 | EL3WINDOW(4); | |
795 | inb(ioaddr + 12); | |
796 | /* ..and on the Boomerang we enable the extra statistics bits. */ | |
797 | outw(0x0040, ioaddr + Wn4_NetDiag); | |
798 | ||
799 | /* Switch to register set 7 for normal use. */ | |
800 | EL3WINDOW(7); | |
801 | ||
802 | if (vp->full_bus_master_rx) { /* Boomerang bus master. */ | |
803 | vp->cur_rx = vp->dirty_rx = 0; | |
804 | if (corkscrew_debug > 2) | |
805 | printk("%s: Filling in the Rx ring.\n", | |
806 | dev->name); | |
807 | for (i = 0; i < RX_RING_SIZE; i++) { | |
808 | struct sk_buff *skb; | |
809 | if (i < (RX_RING_SIZE - 1)) | |
810 | vp->rx_ring[i].next = | |
811 | isa_virt_to_bus(&vp->rx_ring[i + 1]); | |
812 | else | |
813 | vp->rx_ring[i].next = 0; | |
814 | vp->rx_ring[i].status = 0; /* Clear complete bit. */ | |
815 | vp->rx_ring[i].length = PKT_BUF_SZ | 0x80000000; | |
816 | skb = dev_alloc_skb(PKT_BUF_SZ); | |
817 | vp->rx_skbuff[i] = skb; | |
818 | if (skb == NULL) | |
819 | break; /* Bad news! */ | |
820 | skb->dev = dev; /* Mark as being used by this device. */ | |
821 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
689be439 | 822 | vp->rx_ring[i].addr = isa_virt_to_bus(skb->data); |
1da177e4 LT |
823 | } |
824 | vp->rx_ring[i - 1].next = isa_virt_to_bus(&vp->rx_ring[0]); /* Wrap the ring. */ | |
825 | outl(isa_virt_to_bus(&vp->rx_ring[0]), ioaddr + UpListPtr); | |
826 | } | |
827 | if (vp->full_bus_master_tx) { /* Boomerang bus master Tx. */ | |
828 | vp->cur_tx = vp->dirty_tx = 0; | |
829 | outb(PKT_BUF_SZ >> 8, ioaddr + TxFreeThreshold); /* Room for a packet. */ | |
830 | /* Clear the Tx ring. */ | |
831 | for (i = 0; i < TX_RING_SIZE; i++) | |
832 | vp->tx_skbuff[i] = NULL; | |
833 | outl(0, ioaddr + DownListPtr); | |
834 | } | |
835 | /* Set receiver mode: presumably accept b-case and phys addr only. */ | |
836 | set_rx_mode(dev); | |
837 | outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ | |
838 | ||
839 | netif_start_queue(dev); | |
840 | ||
841 | outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ | |
842 | outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ | |
843 | /* Allow status bits to be seen. */ | |
844 | outw(SetStatusEnb | AdapterFailure | IntReq | StatsFull | | |
845 | (vp->full_bus_master_tx ? DownComplete : TxAvailable) | | |
846 | (vp->full_bus_master_rx ? UpComplete : RxComplete) | | |
847 | (vp->bus_master ? DMADone : 0), ioaddr + EL3_CMD); | |
848 | /* Ack all pending events, and set active indicator mask. */ | |
849 | outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, | |
850 | ioaddr + EL3_CMD); | |
851 | outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull | |
852 | | (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete, | |
853 | ioaddr + EL3_CMD); | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | static void corkscrew_timer(unsigned long data) | |
859 | { | |
860 | #ifdef AUTOMEDIA | |
861 | struct net_device *dev = (struct net_device *) data; | |
862 | struct corkscrew_private *vp = netdev_priv(dev); | |
863 | int ioaddr = dev->base_addr; | |
864 | unsigned long flags; | |
865 | int ok = 0; | |
866 | ||
867 | if (corkscrew_debug > 1) | |
868 | printk("%s: Media selection timer tick happened, %s.\n", | |
869 | dev->name, media_tbl[dev->if_port].name); | |
870 | ||
871 | spin_lock_irqsave(&vp->lock, flags); | |
6aa20a22 | 872 | |
1da177e4 LT |
873 | { |
874 | int old_window = inw(ioaddr + EL3_CMD) >> 13; | |
875 | int media_status; | |
876 | EL3WINDOW(4); | |
877 | media_status = inw(ioaddr + Wn4_Media); | |
878 | switch (dev->if_port) { | |
879 | case 0: | |
880 | case 4: | |
881 | case 5: /* 10baseT, 100baseTX, 100baseFX */ | |
882 | if (media_status & Media_LnkBeat) { | |
883 | ok = 1; | |
884 | if (corkscrew_debug > 1) | |
885 | printk("%s: Media %s has link beat, %x.\n", | |
886 | dev->name, | |
887 | media_tbl[dev->if_port].name, | |
888 | media_status); | |
889 | } else if (corkscrew_debug > 1) | |
890 | printk("%s: Media %s is has no link beat, %x.\n", | |
891 | dev->name, | |
892 | media_tbl[dev->if_port].name, | |
893 | media_status); | |
894 | ||
895 | break; | |
896 | default: /* Other media types handled by Tx timeouts. */ | |
897 | if (corkscrew_debug > 1) | |
898 | printk("%s: Media %s is has no indication, %x.\n", | |
899 | dev->name, | |
900 | media_tbl[dev->if_port].name, | |
901 | media_status); | |
902 | ok = 1; | |
903 | } | |
904 | if (!ok) { | |
b6659824 | 905 | __u32 config; |
1da177e4 LT |
906 | |
907 | do { | |
908 | dev->if_port = | |
909 | media_tbl[dev->if_port].next; | |
910 | } | |
911 | while (!(vp->available_media & media_tbl[dev->if_port].mask)); | |
6aa20a22 | 912 | |
1da177e4 LT |
913 | if (dev->if_port == 8) { /* Go back to default. */ |
914 | dev->if_port = vp->default_media; | |
915 | if (corkscrew_debug > 1) | |
916 | printk("%s: Media selection failing, using default %s port.\n", | |
917 | dev->name, | |
918 | media_tbl[dev->if_port].name); | |
919 | } else { | |
920 | if (corkscrew_debug > 1) | |
921 | printk("%s: Media selection failed, now trying %s port.\n", | |
922 | dev->name, | |
923 | media_tbl[dev->if_port].name); | |
924 | vp->timer.expires = jiffies + media_tbl[dev->if_port].wait; | |
925 | add_timer(&vp->timer); | |
926 | } | |
927 | outw((media_status & ~(Media_10TP | Media_SQE)) | | |
928 | media_tbl[dev->if_port].media_bits, | |
929 | ioaddr + Wn4_Media); | |
930 | ||
931 | EL3WINDOW(3); | |
b6659824 AV |
932 | config = inl(ioaddr + Wn3_Config); |
933 | config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift); | |
934 | outl(config, ioaddr + Wn3_Config); | |
1da177e4 LT |
935 | |
936 | outw(dev->if_port == 3 ? StartCoax : StopCoax, | |
937 | ioaddr + EL3_CMD); | |
938 | } | |
939 | EL3WINDOW(old_window); | |
940 | } | |
6aa20a22 | 941 | |
1da177e4 LT |
942 | spin_unlock_irqrestore(&vp->lock, flags); |
943 | if (corkscrew_debug > 1) | |
944 | printk("%s: Media selection timer finished, %s.\n", | |
945 | dev->name, media_tbl[dev->if_port].name); | |
946 | ||
947 | #endif /* AUTOMEDIA */ | |
948 | return; | |
949 | } | |
950 | ||
951 | static void corkscrew_timeout(struct net_device *dev) | |
952 | { | |
953 | int i; | |
954 | struct corkscrew_private *vp = netdev_priv(dev); | |
955 | int ioaddr = dev->base_addr; | |
956 | ||
957 | printk(KERN_WARNING | |
958 | "%s: transmit timed out, tx_status %2.2x status %4.4x.\n", | |
959 | dev->name, inb(ioaddr + TxStatus), | |
960 | inw(ioaddr + EL3_STATUS)); | |
961 | /* Slight code bloat to be user friendly. */ | |
962 | if ((inb(ioaddr + TxStatus) & 0x88) == 0x88) | |
963 | printk(KERN_WARNING | |
964 | "%s: Transmitter encountered 16 collisions -- network" | |
965 | " network cable problem?\n", dev->name); | |
966 | #ifndef final_version | |
967 | printk(" Flags; bus-master %d, full %d; dirty %d current %d.\n", | |
968 | vp->full_bus_master_tx, vp->tx_full, vp->dirty_tx, | |
969 | vp->cur_tx); | |
970 | printk(" Down list %8.8x vs. %p.\n", inl(ioaddr + DownListPtr), | |
971 | &vp->tx_ring[0]); | |
972 | for (i = 0; i < TX_RING_SIZE; i++) { | |
973 | printk(" %d: %p length %8.8x status %8.8x\n", i, | |
974 | &vp->tx_ring[i], | |
975 | vp->tx_ring[i].length, vp->tx_ring[i].status); | |
976 | } | |
977 | #endif | |
978 | /* Issue TX_RESET and TX_START commands. */ | |
979 | outw(TxReset, ioaddr + EL3_CMD); | |
980 | for (i = 20; i >= 0; i--) | |
981 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
982 | break; | |
983 | outw(TxEnable, ioaddr + EL3_CMD); | |
984 | dev->trans_start = jiffies; | |
dfd44151 PZ |
985 | dev->stats.tx_errors++; |
986 | dev->stats.tx_dropped++; | |
1da177e4 LT |
987 | netif_wake_queue(dev); |
988 | } | |
989 | ||
990 | static int corkscrew_start_xmit(struct sk_buff *skb, | |
991 | struct net_device *dev) | |
992 | { | |
993 | struct corkscrew_private *vp = netdev_priv(dev); | |
994 | int ioaddr = dev->base_addr; | |
995 | ||
996 | /* Block a timer-based transmit from overlapping. */ | |
997 | ||
998 | netif_stop_queue(dev); | |
999 | ||
1000 | if (vp->full_bus_master_tx) { /* BOOMERANG bus-master */ | |
1001 | /* Calculate the next Tx descriptor entry. */ | |
1002 | int entry = vp->cur_tx % TX_RING_SIZE; | |
1003 | struct boom_tx_desc *prev_entry; | |
cb958186 ES |
1004 | unsigned long flags; |
1005 | int i; | |
1da177e4 LT |
1006 | |
1007 | if (vp->tx_full) /* No room to transmit with */ | |
1008 | return 1; | |
1009 | if (vp->cur_tx != 0) | |
1010 | prev_entry = &vp->tx_ring[(vp->cur_tx - 1) % TX_RING_SIZE]; | |
1011 | else | |
1012 | prev_entry = NULL; | |
1013 | if (corkscrew_debug > 3) | |
1014 | printk("%s: Trying to send a packet, Tx index %d.\n", | |
1015 | dev->name, vp->cur_tx); | |
1016 | /* vp->tx_full = 1; */ | |
1017 | vp->tx_skbuff[entry] = skb; | |
1018 | vp->tx_ring[entry].next = 0; | |
1019 | vp->tx_ring[entry].addr = isa_virt_to_bus(skb->data); | |
1020 | vp->tx_ring[entry].length = skb->len | 0x80000000; | |
1021 | vp->tx_ring[entry].status = skb->len | 0x80000000; | |
1022 | ||
1023 | spin_lock_irqsave(&vp->lock, flags); | |
1024 | outw(DownStall, ioaddr + EL3_CMD); | |
1025 | /* Wait for the stall to complete. */ | |
1026 | for (i = 20; i >= 0; i--) | |
6aa20a22 | 1027 | if ((inw(ioaddr + EL3_STATUS) & CmdInProgress) == 0) |
1da177e4 LT |
1028 | break; |
1029 | if (prev_entry) | |
1030 | prev_entry->next = isa_virt_to_bus(&vp->tx_ring[entry]); | |
1031 | if (inl(ioaddr + DownListPtr) == 0) { | |
1032 | outl(isa_virt_to_bus(&vp->tx_ring[entry]), | |
1033 | ioaddr + DownListPtr); | |
1034 | queued_packet++; | |
1035 | } | |
1036 | outw(DownUnstall, ioaddr + EL3_CMD); | |
1037 | spin_unlock_irqrestore(&vp->lock, flags); | |
1038 | ||
1039 | vp->cur_tx++; | |
1040 | if (vp->cur_tx - vp->dirty_tx > TX_RING_SIZE - 1) | |
1041 | vp->tx_full = 1; | |
1042 | else { /* Clear previous interrupt enable. */ | |
1043 | if (prev_entry) | |
1044 | prev_entry->status &= ~0x80000000; | |
1045 | netif_wake_queue(dev); | |
1046 | } | |
1047 | dev->trans_start = jiffies; | |
1048 | return 0; | |
1049 | } | |
1050 | /* Put out the doubleword header... */ | |
1051 | outl(skb->len, ioaddr + TX_FIFO); | |
dfd44151 | 1052 | dev->stats.tx_bytes += skb->len; |
1da177e4 LT |
1053 | #ifdef VORTEX_BUS_MASTER |
1054 | if (vp->bus_master) { | |
1055 | /* Set the bus-master controller to transfer the packet. */ | |
1056 | outl((int) (skb->data), ioaddr + Wn7_MasterAddr); | |
1057 | outw((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen); | |
1058 | vp->tx_skb = skb; | |
1059 | outw(StartDMADown, ioaddr + EL3_CMD); | |
1060 | /* queue will be woken at the DMADone interrupt. */ | |
1061 | } else { | |
1062 | /* ... and the packet rounded to a doubleword. */ | |
1063 | outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); | |
1064 | dev_kfree_skb(skb); | |
1065 | if (inw(ioaddr + TxFree) > 1536) { | |
1066 | netif_wake_queue(dev); | |
1067 | } else | |
1068 | /* Interrupt us when the FIFO has room for max-sized packet. */ | |
1069 | outw(SetTxThreshold + (1536 >> 2), | |
1070 | ioaddr + EL3_CMD); | |
1071 | } | |
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), ioaddr + EL3_CMD); | |
1081 | #endif /* bus master */ | |
1082 | ||
1083 | dev->trans_start = jiffies; | |
1084 | ||
1085 | /* Clear the Tx status stack. */ | |
1086 | { | |
1087 | short tx_status; | |
1088 | int i = 4; | |
1089 | ||
1090 | while (--i > 0 && (tx_status = inb(ioaddr + TxStatus)) > 0) { | |
1091 | if (tx_status & 0x3C) { /* A Tx-disabling error occurred. */ | |
1092 | if (corkscrew_debug > 2) | |
1093 | printk("%s: Tx error, status %2.2x.\n", | |
1094 | dev->name, tx_status); | |
1095 | if (tx_status & 0x04) | |
dfd44151 | 1096 | dev->stats.tx_fifo_errors++; |
1da177e4 | 1097 | if (tx_status & 0x38) |
dfd44151 | 1098 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
1099 | if (tx_status & 0x30) { |
1100 | int j; | |
1101 | outw(TxReset, ioaddr + EL3_CMD); | |
1102 | for (j = 20; j >= 0; j--) | |
6aa20a22 | 1103 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) |
1da177e4 LT |
1104 | break; |
1105 | } | |
1106 | outw(TxEnable, ioaddr + EL3_CMD); | |
1107 | } | |
1108 | outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ | |
1109 | } | |
1110 | } | |
1111 | return 0; | |
1112 | } | |
1113 | ||
1114 | /* The interrupt handler does all of the Rx thread work and cleans up | |
1115 | after the Tx thread. */ | |
1116 | ||
7d12e780 | 1117 | static irqreturn_t corkscrew_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1118 | { |
1119 | /* Use the now-standard shared IRQ implementation. */ | |
1120 | struct net_device *dev = dev_id; | |
1121 | struct corkscrew_private *lp = netdev_priv(dev); | |
1122 | int ioaddr, status; | |
1123 | int latency; | |
1124 | int i = max_interrupt_work; | |
1125 | ||
1126 | ioaddr = dev->base_addr; | |
1127 | latency = inb(ioaddr + Timer); | |
1128 | ||
1129 | spin_lock(&lp->lock); | |
6aa20a22 | 1130 | |
1da177e4 LT |
1131 | status = inw(ioaddr + EL3_STATUS); |
1132 | ||
1133 | if (corkscrew_debug > 4) | |
1134 | printk("%s: interrupt, status %4.4x, timer %d.\n", | |
1135 | dev->name, status, latency); | |
1136 | if ((status & 0xE000) != 0xE000) { | |
1137 | static int donedidthis; | |
1138 | /* Some interrupt controllers store a bogus interrupt from boot-time. | |
1139 | Ignore a single early interrupt, but don't hang the machine for | |
1140 | other interrupt problems. */ | |
1141 | if (donedidthis++ > 100) { | |
1142 | printk(KERN_ERR "%s: Bogus interrupt, bailing. Status %4.4x, start=%d.\n", | |
1143 | dev->name, status, netif_running(dev)); | |
1144 | free_irq(dev->irq, dev); | |
1145 | dev->irq = -1; | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | do { | |
1150 | if (corkscrew_debug > 5) | |
1151 | printk("%s: In interrupt loop, status %4.4x.\n", | |
1152 | dev->name, status); | |
1153 | if (status & RxComplete) | |
1154 | corkscrew_rx(dev); | |
1155 | ||
1156 | if (status & TxAvailable) { | |
1157 | if (corkscrew_debug > 5) | |
1158 | printk(" TX room bit was handled.\n"); | |
1159 | /* There's room in the FIFO for a full-sized packet. */ | |
1160 | outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); | |
1161 | netif_wake_queue(dev); | |
1162 | } | |
1163 | if (status & DownComplete) { | |
1164 | unsigned int dirty_tx = lp->dirty_tx; | |
1165 | ||
1166 | while (lp->cur_tx - dirty_tx > 0) { | |
1167 | int entry = dirty_tx % TX_RING_SIZE; | |
1168 | if (inl(ioaddr + DownListPtr) == isa_virt_to_bus(&lp->tx_ring[entry])) | |
1169 | break; /* It still hasn't been processed. */ | |
1170 | if (lp->tx_skbuff[entry]) { | |
1171 | dev_kfree_skb_irq(lp->tx_skbuff[entry]); | |
1172 | lp->tx_skbuff[entry] = NULL; | |
1173 | } | |
1174 | dirty_tx++; | |
1175 | } | |
1176 | lp->dirty_tx = dirty_tx; | |
1177 | outw(AckIntr | DownComplete, ioaddr + EL3_CMD); | |
1178 | if (lp->tx_full && (lp->cur_tx - dirty_tx <= TX_RING_SIZE - 1)) { | |
1179 | lp->tx_full = 0; | |
1180 | netif_wake_queue(dev); | |
1181 | } | |
1182 | } | |
1183 | #ifdef VORTEX_BUS_MASTER | |
1184 | if (status & DMADone) { | |
1185 | outw(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */ | |
1186 | dev_kfree_skb_irq(lp->tx_skb); /* Release the transferred buffer */ | |
1187 | netif_wake_queue(dev); | |
1188 | } | |
1189 | #endif | |
1190 | if (status & UpComplete) { | |
1191 | boomerang_rx(dev); | |
1192 | outw(AckIntr | UpComplete, ioaddr + EL3_CMD); | |
1193 | } | |
1194 | if (status & (AdapterFailure | RxEarly | StatsFull)) { | |
1195 | /* Handle all uncommon interrupts at once. */ | |
1196 | if (status & RxEarly) { /* Rx early is unused. */ | |
1197 | corkscrew_rx(dev); | |
1198 | outw(AckIntr | RxEarly, ioaddr + EL3_CMD); | |
1199 | } | |
1200 | if (status & StatsFull) { /* Empty statistics. */ | |
1201 | static int DoneDidThat; | |
1202 | if (corkscrew_debug > 4) | |
1203 | printk("%s: Updating stats.\n", dev->name); | |
1204 | update_stats(ioaddr, dev); | |
1205 | /* DEBUG HACK: Disable statistics as an interrupt source. */ | |
1206 | /* This occurs when we have the wrong media type! */ | |
1207 | if (DoneDidThat == 0 && inw(ioaddr + EL3_STATUS) & StatsFull) { | |
1208 | int win, reg; | |
1209 | printk("%s: Updating stats failed, disabling stats as an" | |
1210 | " interrupt source.\n", dev->name); | |
1211 | for (win = 0; win < 8; win++) { | |
1212 | EL3WINDOW(win); | |
1213 | printk("\n Vortex window %d:", win); | |
1214 | for (reg = 0; reg < 16; reg++) | |
1215 | printk(" %2.2x", inb(ioaddr + reg)); | |
1216 | } | |
1217 | EL3WINDOW(7); | |
1218 | outw(SetIntrEnb | TxAvailable | | |
1219 | RxComplete | AdapterFailure | | |
1220 | UpComplete | DownComplete | | |
1221 | TxComplete, ioaddr + EL3_CMD); | |
1222 | DoneDidThat++; | |
1223 | } | |
1224 | } | |
1225 | if (status & AdapterFailure) { | |
1226 | /* Adapter failure requires Rx reset and reinit. */ | |
1227 | outw(RxReset, ioaddr + EL3_CMD); | |
1228 | /* Set the Rx filter to the current state. */ | |
1229 | set_rx_mode(dev); | |
1230 | outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */ | |
1231 | outw(AckIntr | AdapterFailure, | |
1232 | ioaddr + EL3_CMD); | |
1233 | } | |
1234 | } | |
1235 | ||
1236 | if (--i < 0) { | |
1237 | printk(KERN_ERR "%s: Too much work in interrupt, status %4.4x. " | |
1238 | "Disabling functions (%4.4x).\n", dev->name, | |
1239 | status, SetStatusEnb | ((~status) & 0x7FE)); | |
1240 | /* Disable all pending interrupts. */ | |
1241 | outw(SetStatusEnb | ((~status) & 0x7FE), ioaddr + EL3_CMD); | |
1242 | outw(AckIntr | 0x7FF, ioaddr + EL3_CMD); | |
1243 | break; | |
1244 | } | |
1245 | /* Acknowledge the IRQ. */ | |
1246 | outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); | |
1247 | ||
1248 | } while ((status = inw(ioaddr + EL3_STATUS)) & (IntLatch | RxComplete)); | |
6aa20a22 | 1249 | |
1da177e4 LT |
1250 | spin_unlock(&lp->lock); |
1251 | ||
1252 | if (corkscrew_debug > 4) | |
1253 | printk("%s: exiting interrupt, status %4.4x.\n", dev->name, status); | |
1254 | return IRQ_HANDLED; | |
1255 | } | |
1256 | ||
1257 | static int corkscrew_rx(struct net_device *dev) | |
1258 | { | |
1da177e4 LT |
1259 | int ioaddr = dev->base_addr; |
1260 | int i; | |
1261 | short rx_status; | |
1262 | ||
1263 | if (corkscrew_debug > 5) | |
1264 | printk(" In rx_packet(), status %4.4x, rx_status %4.4x.\n", | |
1265 | inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus)); | |
1266 | while ((rx_status = inw(ioaddr + RxStatus)) > 0) { | |
1267 | if (rx_status & 0x4000) { /* Error, update stats. */ | |
1268 | unsigned char rx_error = inb(ioaddr + RxErrors); | |
1269 | if (corkscrew_debug > 2) | |
1270 | printk(" Rx error: status %2.2x.\n", | |
1271 | rx_error); | |
dfd44151 | 1272 | dev->stats.rx_errors++; |
1da177e4 | 1273 | if (rx_error & 0x01) |
dfd44151 | 1274 | dev->stats.rx_over_errors++; |
1da177e4 | 1275 | if (rx_error & 0x02) |
dfd44151 | 1276 | dev->stats.rx_length_errors++; |
1da177e4 | 1277 | if (rx_error & 0x04) |
dfd44151 | 1278 | dev->stats.rx_frame_errors++; |
1da177e4 | 1279 | if (rx_error & 0x08) |
dfd44151 | 1280 | dev->stats.rx_crc_errors++; |
1da177e4 | 1281 | if (rx_error & 0x10) |
dfd44151 | 1282 | dev->stats.rx_length_errors++; |
1da177e4 LT |
1283 | } else { |
1284 | /* The packet length: up to 4.5K!. */ | |
1285 | short pkt_len = rx_status & 0x1fff; | |
1286 | struct sk_buff *skb; | |
1287 | ||
1288 | skb = dev_alloc_skb(pkt_len + 5 + 2); | |
1289 | if (corkscrew_debug > 4) | |
1290 | printk("Receiving packet size %d status %4.4x.\n", | |
1291 | pkt_len, rx_status); | |
1292 | if (skb != NULL) { | |
1da177e4 LT |
1293 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
1294 | /* 'skb_put()' points to the start of sk_buff data area. */ | |
1295 | insl(ioaddr + RX_FIFO, | |
1296 | skb_put(skb, pkt_len), | |
1297 | (pkt_len + 3) >> 2); | |
1298 | outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */ | |
1299 | skb->protocol = eth_type_trans(skb, dev); | |
1300 | netif_rx(skb); | |
1301 | dev->last_rx = jiffies; | |
dfd44151 PZ |
1302 | dev->stats.rx_packets++; |
1303 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
1304 | /* Wait a limited time to go to next packet. */ |
1305 | for (i = 200; i >= 0; i--) | |
6aa20a22 | 1306 | if (! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) |
1da177e4 LT |
1307 | break; |
1308 | continue; | |
1309 | } else if (corkscrew_debug) | |
1310 | printk("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, pkt_len); | |
1311 | } | |
1312 | outw(RxDiscard, ioaddr + EL3_CMD); | |
dfd44151 | 1313 | dev->stats.rx_dropped++; |
1da177e4 LT |
1314 | /* Wait a limited time to skip this packet. */ |
1315 | for (i = 200; i >= 0; i--) | |
1316 | if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress)) | |
1317 | break; | |
1318 | } | |
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | static int boomerang_rx(struct net_device *dev) | |
1323 | { | |
1324 | struct corkscrew_private *vp = netdev_priv(dev); | |
1325 | int entry = vp->cur_rx % RX_RING_SIZE; | |
1326 | int ioaddr = dev->base_addr; | |
1327 | int rx_status; | |
1328 | ||
1329 | if (corkscrew_debug > 5) | |
1330 | printk(" In boomerang_rx(), status %4.4x, rx_status %4.4x.\n", | |
1331 | inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus)); | |
1332 | while ((rx_status = vp->rx_ring[entry].status) & RxDComplete) { | |
1333 | if (rx_status & RxDError) { /* Error, update stats. */ | |
1334 | unsigned char rx_error = rx_status >> 16; | |
1335 | if (corkscrew_debug > 2) | |
1336 | printk(" Rx error: status %2.2x.\n", | |
1337 | rx_error); | |
dfd44151 | 1338 | dev->stats.rx_errors++; |
1da177e4 | 1339 | if (rx_error & 0x01) |
dfd44151 | 1340 | dev->stats.rx_over_errors++; |
1da177e4 | 1341 | if (rx_error & 0x02) |
dfd44151 | 1342 | dev->stats.rx_length_errors++; |
1da177e4 | 1343 | if (rx_error & 0x04) |
dfd44151 | 1344 | dev->stats.rx_frame_errors++; |
1da177e4 | 1345 | if (rx_error & 0x08) |
dfd44151 | 1346 | dev->stats.rx_crc_errors++; |
1da177e4 | 1347 | if (rx_error & 0x10) |
dfd44151 | 1348 | dev->stats.rx_length_errors++; |
1da177e4 LT |
1349 | } else { |
1350 | /* The packet length: up to 4.5K!. */ | |
1351 | short pkt_len = rx_status & 0x1fff; | |
1352 | struct sk_buff *skb; | |
1353 | ||
dfd44151 | 1354 | dev->stats.rx_bytes += pkt_len; |
1da177e4 LT |
1355 | if (corkscrew_debug > 4) |
1356 | printk("Receiving packet size %d status %4.4x.\n", | |
1357 | pkt_len, rx_status); | |
1358 | ||
1359 | /* Check if the packet is long enough to just accept without | |
1360 | copying to a properly sized skbuff. */ | |
1361 | if (pkt_len < rx_copybreak | |
79ea13ce | 1362 | && (skb = dev_alloc_skb(pkt_len + 4)) != NULL) { |
1da177e4 LT |
1363 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
1364 | /* 'skb_put()' points to the start of sk_buff data area. */ | |
1365 | memcpy(skb_put(skb, pkt_len), | |
1366 | isa_bus_to_virt(vp->rx_ring[entry]. | |
1367 | addr), pkt_len); | |
1368 | rx_copy++; | |
1369 | } else { | |
1370 | void *temp; | |
1371 | /* Pass up the skbuff already on the Rx ring. */ | |
1372 | skb = vp->rx_skbuff[entry]; | |
1373 | vp->rx_skbuff[entry] = NULL; | |
1374 | temp = skb_put(skb, pkt_len); | |
1375 | /* Remove this checking code for final release. */ | |
1376 | if (isa_bus_to_virt(vp->rx_ring[entry].addr) != temp) | |
1377 | printk("%s: Warning -- the skbuff addresses do not match" | |
1378 | " in boomerang_rx: %p vs. %p / %p.\n", | |
1379 | dev->name, | |
1380 | isa_bus_to_virt(vp-> | |
1381 | rx_ring[entry]. | |
1382 | addr), skb->head, | |
1383 | temp); | |
1384 | rx_nocopy++; | |
1385 | } | |
1386 | skb->protocol = eth_type_trans(skb, dev); | |
1387 | netif_rx(skb); | |
1388 | dev->last_rx = jiffies; | |
dfd44151 | 1389 | dev->stats.rx_packets++; |
1da177e4 LT |
1390 | } |
1391 | entry = (++vp->cur_rx) % RX_RING_SIZE; | |
1392 | } | |
1393 | /* Refill the Rx ring buffers. */ | |
1394 | for (; vp->cur_rx - vp->dirty_rx > 0; vp->dirty_rx++) { | |
1395 | struct sk_buff *skb; | |
1396 | entry = vp->dirty_rx % RX_RING_SIZE; | |
1397 | if (vp->rx_skbuff[entry] == NULL) { | |
1398 | skb = dev_alloc_skb(PKT_BUF_SZ); | |
1399 | if (skb == NULL) | |
1400 | break; /* Bad news! */ | |
1401 | skb->dev = dev; /* Mark as being used by this device. */ | |
1402 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
689be439 | 1403 | vp->rx_ring[entry].addr = isa_virt_to_bus(skb->data); |
1da177e4 LT |
1404 | vp->rx_skbuff[entry] = skb; |
1405 | } | |
1406 | vp->rx_ring[entry].status = 0; /* Clear complete bit. */ | |
1407 | } | |
1408 | return 0; | |
1409 | } | |
1410 | ||
1411 | static int corkscrew_close(struct net_device *dev) | |
1412 | { | |
1413 | struct corkscrew_private *vp = netdev_priv(dev); | |
1414 | int ioaddr = dev->base_addr; | |
1415 | int i; | |
1416 | ||
1417 | netif_stop_queue(dev); | |
1418 | ||
1419 | if (corkscrew_debug > 1) { | |
1420 | printk("%s: corkscrew_close() status %4.4x, Tx status %2.2x.\n", | |
1421 | dev->name, inw(ioaddr + EL3_STATUS), | |
1422 | inb(ioaddr + TxStatus)); | |
1423 | printk("%s: corkscrew close stats: rx_nocopy %d rx_copy %d" | |
1424 | " tx_queued %d.\n", dev->name, rx_nocopy, rx_copy, | |
1425 | queued_packet); | |
1426 | } | |
1427 | ||
1428 | del_timer(&vp->timer); | |
1429 | ||
1430 | /* Turn off statistics ASAP. We update lp->stats below. */ | |
1431 | outw(StatsDisable, ioaddr + EL3_CMD); | |
1432 | ||
1433 | /* Disable the receiver and transmitter. */ | |
1434 | outw(RxDisable, ioaddr + EL3_CMD); | |
1435 | outw(TxDisable, ioaddr + EL3_CMD); | |
1436 | ||
1437 | if (dev->if_port == XCVR_10base2) | |
1438 | /* Turn off thinnet power. Green! */ | |
1439 | outw(StopCoax, ioaddr + EL3_CMD); | |
1440 | ||
1441 | free_irq(dev->irq, dev); | |
1442 | ||
1443 | outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); | |
1444 | ||
1445 | update_stats(ioaddr, dev); | |
1446 | if (vp->full_bus_master_rx) { /* Free Boomerang bus master Rx buffers. */ | |
1447 | outl(0, ioaddr + UpListPtr); | |
1448 | for (i = 0; i < RX_RING_SIZE; i++) | |
1449 | if (vp->rx_skbuff[i]) { | |
1450 | dev_kfree_skb(vp->rx_skbuff[i]); | |
1451 | vp->rx_skbuff[i] = NULL; | |
1452 | } | |
1453 | } | |
1454 | if (vp->full_bus_master_tx) { /* Free Boomerang bus master Tx buffers. */ | |
1455 | outl(0, ioaddr + DownListPtr); | |
1456 | for (i = 0; i < TX_RING_SIZE; i++) | |
1457 | if (vp->tx_skbuff[i]) { | |
1458 | dev_kfree_skb(vp->tx_skbuff[i]); | |
1459 | vp->tx_skbuff[i] = NULL; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | return 0; | |
1464 | } | |
1465 | ||
1466 | static struct net_device_stats *corkscrew_get_stats(struct net_device *dev) | |
1467 | { | |
1468 | struct corkscrew_private *vp = netdev_priv(dev); | |
1469 | unsigned long flags; | |
1470 | ||
1471 | if (netif_running(dev)) { | |
1472 | spin_lock_irqsave(&vp->lock, flags); | |
1473 | update_stats(dev->base_addr, dev); | |
1474 | spin_unlock_irqrestore(&vp->lock, flags); | |
1475 | } | |
dfd44151 | 1476 | return &dev->stats; |
1da177e4 LT |
1477 | } |
1478 | ||
1479 | /* Update statistics. | |
1480 | Unlike with the EL3 we need not worry about interrupts changing | |
1481 | the window setting from underneath us, but we must still guard | |
1482 | against a race condition with a StatsUpdate interrupt updating the | |
1483 | table. This is done by checking that the ASM (!) code generated uses | |
1484 | atomic updates with '+='. | |
1485 | */ | |
1486 | static void update_stats(int ioaddr, struct net_device *dev) | |
1487 | { | |
1da177e4 LT |
1488 | /* Unlike the 3c5x9 we need not turn off stats updates while reading. */ |
1489 | /* Switch to the stats window, and read everything. */ | |
1490 | EL3WINDOW(6); | |
dfd44151 PZ |
1491 | dev->stats.tx_carrier_errors += inb(ioaddr + 0); |
1492 | dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); | |
1da177e4 | 1493 | /* Multiple collisions. */ inb(ioaddr + 2); |
dfd44151 PZ |
1494 | dev->stats.collisions += inb(ioaddr + 3); |
1495 | dev->stats.tx_window_errors += inb(ioaddr + 4); | |
1496 | dev->stats.rx_fifo_errors += inb(ioaddr + 5); | |
1497 | dev->stats.tx_packets += inb(ioaddr + 6); | |
1498 | dev->stats.tx_packets += (inb(ioaddr + 9) & 0x30) << 4; | |
1da177e4 LT |
1499 | /* Rx packets */ inb(ioaddr + 7); |
1500 | /* Must read to clear */ | |
1501 | /* Tx deferrals */ inb(ioaddr + 8); | |
1502 | /* Don't bother with register 9, an extension of registers 6&7. | |
1503 | If we do use the 6&7 values the atomic update assumption above | |
1504 | is invalid. */ | |
1505 | inw(ioaddr + 10); /* Total Rx and Tx octets. */ | |
1506 | inw(ioaddr + 12); | |
1507 | /* New: On the Vortex we must also clear the BadSSD counter. */ | |
1508 | EL3WINDOW(4); | |
1509 | inb(ioaddr + 12); | |
1510 | ||
1511 | /* We change back to window 7 (not 1) with the Vortex. */ | |
1512 | EL3WINDOW(7); | |
1513 | return; | |
1514 | } | |
1515 | ||
1516 | /* This new version of set_rx_mode() supports v1.4 kernels. | |
1517 | The Vortex chip has no documented multicast filter, so the only | |
1518 | multicast setting is to receive all multicast frames. At least | |
1519 | the chip has a very clean way to set the mode, unlike many others. */ | |
1520 | static void set_rx_mode(struct net_device *dev) | |
1521 | { | |
1522 | int ioaddr = dev->base_addr; | |
1523 | short new_mode; | |
1524 | ||
1525 | if (dev->flags & IFF_PROMISC) { | |
1526 | if (corkscrew_debug > 3) | |
1527 | printk("%s: Setting promiscuous mode.\n", | |
1528 | dev->name); | |
1529 | new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm; | |
1530 | } else if ((dev->mc_list) || (dev->flags & IFF_ALLMULTI)) { | |
1531 | new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast; | |
1532 | } else | |
1533 | new_mode = SetRxFilter | RxStation | RxBroadcast; | |
1534 | ||
1535 | outw(new_mode, ioaddr + EL3_CMD); | |
1536 | } | |
1537 | ||
1538 | static void netdev_get_drvinfo(struct net_device *dev, | |
1539 | struct ethtool_drvinfo *info) | |
1540 | { | |
1541 | strcpy(info->driver, DRV_NAME); | |
1542 | strcpy(info->version, DRV_VERSION); | |
1543 | sprintf(info->bus_info, "ISA 0x%lx", dev->base_addr); | |
1544 | } | |
1545 | ||
1546 | static u32 netdev_get_msglevel(struct net_device *dev) | |
1547 | { | |
1548 | return corkscrew_debug; | |
1549 | } | |
1550 | ||
1551 | static void netdev_set_msglevel(struct net_device *dev, u32 level) | |
1552 | { | |
1553 | corkscrew_debug = level; | |
1554 | } | |
1555 | ||
7282d491 | 1556 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
1557 | .get_drvinfo = netdev_get_drvinfo, |
1558 | .get_msglevel = netdev_get_msglevel, | |
1559 | .set_msglevel = netdev_set_msglevel, | |
1560 | }; | |
1561 | ||
6aa20a22 | 1562 | |
1da177e4 LT |
1563 | #ifdef MODULE |
1564 | void cleanup_module(void) | |
1565 | { | |
1566 | while (!list_empty(&root_corkscrew_dev)) { | |
1567 | struct net_device *dev; | |
1568 | struct corkscrew_private *vp; | |
1569 | ||
1570 | vp = list_entry(root_corkscrew_dev.next, | |
1571 | struct corkscrew_private, list); | |
1572 | dev = vp->our_dev; | |
1573 | unregister_netdev(dev); | |
1574 | cleanup_card(dev); | |
1575 | free_netdev(dev); | |
1576 | } | |
1577 | } | |
1578 | #endif /* MODULE */ | |
6aa20a22 | 1579 | |
1da177e4 LT |
1580 | /* |
1581 | * Local variables: | |
1582 | * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c 3c515.c" | |
1583 | * c-indent-level: 4 | |
1584 | * tab-width: 4 | |
1585 | * End: | |
1586 | */ |