Commit | Line | Data |
---|---|---|
6aa20a22 | 1 | /* |
1da177e4 LT |
2 | * Lance ethernet driver for the MIPS processor based |
3 | * DECstation family | |
4 | * | |
5 | * | |
6 | * adopted from sunlance.c by Richard van den Berg | |
7 | * | |
257b346d | 8 | * Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki |
1da177e4 LT |
9 | * |
10 | * additional sources: | |
11 | * - PMAD-AA TURBOchannel Ethernet Module Functional Specification, | |
12 | * Revision 1.2 | |
13 | * | |
14 | * History: | |
15 | * | |
16 | * v0.001: The kernel accepts the code and it shows the hardware address. | |
17 | * | |
18 | * v0.002: Removed most sparc stuff, left only some module and dma stuff. | |
19 | * | |
20 | * v0.003: Enhanced base address calculation from proposals by | |
21 | * Harald Koerfgen and Thomas Riemer. | |
22 | * | |
23 | * v0.004: lance-regs is pointing at the right addresses, added prom | |
24 | * check. First start of address mapping and DMA. | |
25 | * | |
26 | * v0.005: started to play around with LANCE-DMA. This driver will not | |
27 | * work for non IOASIC lances. HK | |
28 | * | |
29 | * v0.006: added pointer arrays to lance_private and setup routine for | |
30 | * them in dec_lance_init. HK | |
31 | * | |
32 | * v0.007: Big shit. The LANCE seems to use a different DMA mechanism to | |
33 | * access the init block. This looks like one (short) word at a | |
34 | * time, but the smallest amount the IOASIC can transfer is a | |
35 | * (long) word. So we have a 2-2 padding here. Changed | |
36 | * lance_init_block accordingly. The 16-16 padding for the buffers | |
37 | * seems to be correct. HK | |
38 | * | |
39 | * v0.008: mods to make PMAX_LANCE work. 01/09/1999 triemer | |
40 | * | |
41 | * v0.009: Module support fixes, multiple interfaces support, various | |
42 | * bits. macro | |
3b6e8fe7 MR |
43 | * |
44 | * v0.010: Fixes for the PMAD mapping of the LANCE buffer and for the | |
45 | * PMAX requirement to only use halfword accesses to the | |
46 | * buffer. macro | |
257b346d MR |
47 | * |
48 | * v0.011: Converted the PMAD to the driver model. macro | |
1da177e4 LT |
49 | */ |
50 | ||
1da177e4 LT |
51 | #include <linux/crc32.h> |
52 | #include <linux/delay.h> | |
53 | #include <linux/errno.h> | |
54 | #include <linux/if_ether.h> | |
55 | #include <linux/init.h> | |
56 | #include <linux/kernel.h> | |
57 | #include <linux/module.h> | |
58 | #include <linux/netdevice.h> | |
59 | #include <linux/etherdevice.h> | |
60 | #include <linux/spinlock.h> | |
61 | #include <linux/stddef.h> | |
62 | #include <linux/string.h> | |
257b346d | 63 | #include <linux/tc.h> |
3b6e8fe7 | 64 | #include <linux/types.h> |
1da177e4 LT |
65 | |
66 | #include <asm/addrspace.h> | |
36156cdf RB |
67 | #include <asm/system.h> |
68 | ||
1da177e4 LT |
69 | #include <asm/dec/interrupts.h> |
70 | #include <asm/dec/ioasic.h> | |
71 | #include <asm/dec/ioasic_addrs.h> | |
72 | #include <asm/dec/kn01.h> | |
73 | #include <asm/dec/machtype.h> | |
36156cdf | 74 | #include <asm/dec/system.h> |
1da177e4 LT |
75 | |
76 | static char version[] __devinitdata = | |
257b346d | 77 | "declance.c: v0.011 by Linux MIPS DECstation task force\n"; |
1da177e4 LT |
78 | |
79 | MODULE_AUTHOR("Linux MIPS DECstation task force"); | |
80 | MODULE_DESCRIPTION("DEC LANCE (DECstation onboard, PMAD-xx) driver"); | |
81 | MODULE_LICENSE("GPL"); | |
82 | ||
257b346d MR |
83 | #define __unused __attribute__ ((unused)) |
84 | ||
1da177e4 LT |
85 | /* |
86 | * card types | |
87 | */ | |
88 | #define ASIC_LANCE 1 | |
89 | #define PMAD_LANCE 2 | |
90 | #define PMAX_LANCE 3 | |
91 | ||
1da177e4 LT |
92 | |
93 | #define LE_CSR0 0 | |
94 | #define LE_CSR1 1 | |
95 | #define LE_CSR2 2 | |
96 | #define LE_CSR3 3 | |
97 | ||
98 | #define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ | |
99 | ||
100 | #define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ | |
101 | #define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ | |
102 | #define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ | |
103 | #define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ | |
104 | #define LE_C0_MERR 0x0800 /* ME: Memory error */ | |
105 | #define LE_C0_RINT 0x0400 /* Received interrupt */ | |
106 | #define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ | |
107 | #define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ | |
108 | #define LE_C0_INTR 0x0080 /* Interrupt or error */ | |
109 | #define LE_C0_INEA 0x0040 /* Interrupt enable */ | |
110 | #define LE_C0_RXON 0x0020 /* Receiver on */ | |
111 | #define LE_C0_TXON 0x0010 /* Transmitter on */ | |
112 | #define LE_C0_TDMD 0x0008 /* Transmitter demand */ | |
113 | #define LE_C0_STOP 0x0004 /* Stop the card */ | |
114 | #define LE_C0_STRT 0x0002 /* Start the card */ | |
115 | #define LE_C0_INIT 0x0001 /* Init the card */ | |
116 | ||
117 | #define LE_C3_BSWP 0x4 /* SWAP */ | |
118 | #define LE_C3_ACON 0x2 /* ALE Control */ | |
119 | #define LE_C3_BCON 0x1 /* Byte control */ | |
120 | ||
121 | /* Receive message descriptor 1 */ | |
3b6e8fe7 MR |
122 | #define LE_R1_OWN 0x8000 /* Who owns the entry */ |
123 | #define LE_R1_ERR 0x4000 /* Error: if FRA, OFL, CRC or BUF is set */ | |
124 | #define LE_R1_FRA 0x2000 /* FRA: Frame error */ | |
125 | #define LE_R1_OFL 0x1000 /* OFL: Frame overflow */ | |
126 | #define LE_R1_CRC 0x0800 /* CRC error */ | |
127 | #define LE_R1_BUF 0x0400 /* BUF: Buffer error */ | |
128 | #define LE_R1_SOP 0x0200 /* Start of packet */ | |
129 | #define LE_R1_EOP 0x0100 /* End of packet */ | |
130 | #define LE_R1_POK 0x0300 /* Packet is complete: SOP + EOP */ | |
131 | ||
132 | /* Transmit message descriptor 1 */ | |
133 | #define LE_T1_OWN 0x8000 /* Lance owns the packet */ | |
134 | #define LE_T1_ERR 0x4000 /* Error summary */ | |
135 | #define LE_T1_EMORE 0x1000 /* Error: more than one retry needed */ | |
136 | #define LE_T1_EONE 0x0800 /* Error: one retry needed */ | |
137 | #define LE_T1_EDEF 0x0400 /* Error: deferred */ | |
138 | #define LE_T1_SOP 0x0200 /* Start of packet */ | |
139 | #define LE_T1_EOP 0x0100 /* End of packet */ | |
140 | #define LE_T1_POK 0x0300 /* Packet is complete: SOP + EOP */ | |
1da177e4 LT |
141 | |
142 | #define LE_T3_BUF 0x8000 /* Buffer error */ | |
143 | #define LE_T3_UFL 0x4000 /* Error underflow */ | |
144 | #define LE_T3_LCOL 0x1000 /* Error late collision */ | |
145 | #define LE_T3_CLOS 0x0800 /* Error carrier loss */ | |
146 | #define LE_T3_RTY 0x0400 /* Error retry */ | |
147 | #define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ | |
148 | ||
149 | /* Define: 2^4 Tx buffers and 2^4 Rx buffers */ | |
150 | ||
151 | #ifndef LANCE_LOG_TX_BUFFERS | |
152 | #define LANCE_LOG_TX_BUFFERS 4 | |
153 | #define LANCE_LOG_RX_BUFFERS 4 | |
154 | #endif | |
155 | ||
156 | #define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) | |
157 | #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) | |
158 | ||
159 | #define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) | |
160 | #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) | |
161 | ||
162 | #define PKT_BUF_SZ 1536 | |
163 | #define RX_BUFF_SIZE PKT_BUF_SZ | |
164 | #define TX_BUFF_SIZE PKT_BUF_SZ | |
165 | ||
166 | #undef TEST_HITS | |
167 | #define ZERO 0 | |
168 | ||
3b6e8fe7 MR |
169 | /* |
170 | * The DS2100/3100 have a linear 64 kB buffer which supports halfword | |
171 | * accesses only. Each halfword of the buffer is word-aligned in the | |
172 | * CPU address space. | |
173 | * | |
174 | * The PMAD-AA has a 128 kB buffer on-board. | |
1da177e4 | 175 | * |
3b6e8fe7 MR |
176 | * The IOASIC LANCE devices use a shared memory region. This region |
177 | * as seen from the CPU is (max) 128 kB long and has to be on an 128 kB | |
178 | * boundary. The LANCE sees this as a 64 kB long continuous memory | |
179 | * region. | |
1da177e4 | 180 | * |
3b6e8fe7 MR |
181 | * The LANCE's DMA address is used as an index in this buffer and DMA |
182 | * takes place in bursts of eight 16-bit words which are packed into | |
183 | * four 32-bit words by the IOASIC. This leads to a strange padding: | |
184 | * 16 bytes of valid data followed by a 16 byte gap :-(. | |
1da177e4 LT |
185 | */ |
186 | ||
187 | struct lance_rx_desc { | |
188 | unsigned short rmd0; /* low address of packet */ | |
3b6e8fe7 MR |
189 | unsigned short rmd1; /* high address of packet |
190 | and descriptor bits */ | |
1da177e4 LT |
191 | short length; /* 2s complement (negative!) |
192 | of buffer length */ | |
1da177e4 | 193 | unsigned short mblength; /* actual number of bytes received */ |
1da177e4 LT |
194 | }; |
195 | ||
196 | struct lance_tx_desc { | |
197 | unsigned short tmd0; /* low address of packet */ | |
3b6e8fe7 MR |
198 | unsigned short tmd1; /* high address of packet |
199 | and descriptor bits */ | |
1da177e4 LT |
200 | short length; /* 2s complement (negative!) |
201 | of buffer length */ | |
1da177e4 | 202 | unsigned short misc; |
1da177e4 LT |
203 | }; |
204 | ||
205 | ||
206 | /* First part of the LANCE initialization block, described in databook. */ | |
207 | struct lance_init_block { | |
208 | unsigned short mode; /* pre-set mode (reg. 15) */ | |
1da177e4 | 209 | |
3b6e8fe7 MR |
210 | unsigned short phys_addr[3]; /* physical ethernet address */ |
211 | unsigned short filter[4]; /* multicast filter */ | |
1da177e4 LT |
212 | |
213 | /* Receive and transmit ring base, along with extra bits. */ | |
214 | unsigned short rx_ptr; /* receive descriptor addr */ | |
1da177e4 | 215 | unsigned short rx_len; /* receive len and high addr */ |
1da177e4 | 216 | unsigned short tx_ptr; /* transmit descriptor addr */ |
1da177e4 | 217 | unsigned short tx_len; /* transmit len and high addr */ |
3b6e8fe7 MR |
218 | |
219 | short gap[4]; | |
1da177e4 LT |
220 | |
221 | /* The buffer descriptors */ | |
222 | struct lance_rx_desc brx_ring[RX_RING_SIZE]; | |
223 | struct lance_tx_desc btx_ring[TX_RING_SIZE]; | |
224 | }; | |
225 | ||
226 | #define BUF_OFFSET_CPU sizeof(struct lance_init_block) | |
3b6e8fe7 | 227 | #define BUF_OFFSET_LNC sizeof(struct lance_init_block) |
1da177e4 | 228 | |
3b6e8fe7 MR |
229 | #define shift_off(off, type) \ |
230 | (type == ASIC_LANCE || type == PMAX_LANCE ? off << 1 : off) | |
1da177e4 | 231 | |
3b6e8fe7 MR |
232 | #define lib_off(rt, type) \ |
233 | shift_off(offsetof(struct lance_init_block, rt), type) | |
234 | ||
235 | #define lib_ptr(ib, rt, type) \ | |
236 | ((volatile u16 *)((u8 *)(ib) + lib_off(rt, type))) | |
237 | ||
238 | #define rds_off(rt, type) \ | |
239 | shift_off(offsetof(struct lance_rx_desc, rt), type) | |
240 | ||
241 | #define rds_ptr(rd, rt, type) \ | |
242 | ((volatile u16 *)((u8 *)(rd) + rds_off(rt, type))) | |
243 | ||
244 | #define tds_off(rt, type) \ | |
245 | shift_off(offsetof(struct lance_tx_desc, rt), type) | |
246 | ||
247 | #define tds_ptr(td, rt, type) \ | |
248 | ((volatile u16 *)((u8 *)(td) + tds_off(rt, type))) | |
1da177e4 LT |
249 | |
250 | struct lance_private { | |
251 | struct net_device *next; | |
252 | int type; | |
1da177e4 LT |
253 | int dma_irq; |
254 | volatile struct lance_regs *ll; | |
1da177e4 LT |
255 | |
256 | spinlock_t lock; | |
257 | ||
258 | int rx_new, tx_new; | |
259 | int rx_old, tx_old; | |
260 | ||
261 | struct net_device_stats stats; | |
262 | ||
263 | unsigned short busmaster_regval; | |
264 | ||
265 | struct timer_list multicast_timer; | |
266 | ||
267 | /* Pointers to the ring buffers as seen from the CPU */ | |
268 | char *rx_buf_ptr_cpu[RX_RING_SIZE]; | |
269 | char *tx_buf_ptr_cpu[TX_RING_SIZE]; | |
270 | ||
271 | /* Pointers to the ring buffers as seen from the LANCE */ | |
3b6e8fe7 MR |
272 | uint rx_buf_ptr_lnc[RX_RING_SIZE]; |
273 | uint tx_buf_ptr_lnc[TX_RING_SIZE]; | |
1da177e4 LT |
274 | }; |
275 | ||
276 | #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ | |
277 | lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ | |
278 | lp->tx_old - lp->tx_new-1) | |
279 | ||
280 | /* The lance control ports are at an absolute address, machine and tc-slot | |
281 | * dependent. | |
282 | * DECstations do only 32-bit access and the LANCE uses 16 bit addresses, | |
283 | * so we have to give the structure an extra member making rap pointing | |
284 | * at the right address | |
285 | */ | |
286 | struct lance_regs { | |
287 | volatile unsigned short rdp; /* register data port */ | |
288 | unsigned short pad; | |
289 | volatile unsigned short rap; /* register address port */ | |
290 | }; | |
291 | ||
292 | int dec_lance_debug = 2; | |
293 | ||
257b346d | 294 | static struct tc_driver dec_lance_tc_driver; |
1da177e4 LT |
295 | static struct net_device *root_lance_dev; |
296 | ||
297 | static inline void writereg(volatile unsigned short *regptr, short value) | |
298 | { | |
299 | *regptr = value; | |
300 | iob(); | |
301 | } | |
302 | ||
303 | /* Load the CSR registers */ | |
304 | static void load_csrs(struct lance_private *lp) | |
305 | { | |
306 | volatile struct lance_regs *ll = lp->ll; | |
3b6e8fe7 | 307 | uint leptr; |
1da177e4 LT |
308 | |
309 | /* The address space as seen from the LANCE | |
310 | * begins at address 0. HK | |
311 | */ | |
312 | leptr = 0; | |
313 | ||
314 | writereg(&ll->rap, LE_CSR1); | |
315 | writereg(&ll->rdp, (leptr & 0xFFFF)); | |
316 | writereg(&ll->rap, LE_CSR2); | |
317 | writereg(&ll->rdp, leptr >> 16); | |
318 | writereg(&ll->rap, LE_CSR3); | |
319 | writereg(&ll->rdp, lp->busmaster_regval); | |
320 | ||
321 | /* Point back to csr0 */ | |
322 | writereg(&ll->rap, LE_CSR0); | |
323 | } | |
324 | ||
325 | /* | |
326 | * Our specialized copy routines | |
327 | * | |
328 | */ | |
3b6e8fe7 | 329 | static void cp_to_buf(const int type, void *to, const void *from, int len) |
1da177e4 LT |
330 | { |
331 | unsigned short *tp, *fp, clen; | |
332 | unsigned char *rtp, *rfp; | |
333 | ||
3b6e8fe7 MR |
334 | if (type == PMAD_LANCE) { |
335 | memcpy(to, from, len); | |
336 | } else if (type == PMAX_LANCE) { | |
1da177e4 LT |
337 | clen = len >> 1; |
338 | tp = (unsigned short *) to; | |
339 | fp = (unsigned short *) from; | |
340 | ||
341 | while (clen--) { | |
342 | *tp++ = *fp++; | |
343 | tp++; | |
344 | } | |
345 | ||
346 | clen = len & 1; | |
347 | rtp = (unsigned char *) tp; | |
348 | rfp = (unsigned char *) fp; | |
349 | while (clen--) { | |
350 | *rtp++ = *rfp++; | |
351 | } | |
352 | } else { | |
353 | /* | |
354 | * copy 16 Byte chunks | |
355 | */ | |
356 | clen = len >> 4; | |
357 | tp = (unsigned short *) to; | |
358 | fp = (unsigned short *) from; | |
359 | while (clen--) { | |
360 | *tp++ = *fp++; | |
361 | *tp++ = *fp++; | |
362 | *tp++ = *fp++; | |
363 | *tp++ = *fp++; | |
364 | *tp++ = *fp++; | |
365 | *tp++ = *fp++; | |
366 | *tp++ = *fp++; | |
367 | *tp++ = *fp++; | |
368 | tp += 8; | |
369 | } | |
370 | ||
371 | /* | |
372 | * do the rest, if any. | |
373 | */ | |
374 | clen = len & 15; | |
375 | rtp = (unsigned char *) tp; | |
376 | rfp = (unsigned char *) fp; | |
377 | while (clen--) { | |
378 | *rtp++ = *rfp++; | |
379 | } | |
380 | } | |
381 | ||
382 | iob(); | |
383 | } | |
384 | ||
3b6e8fe7 | 385 | static void cp_from_buf(const int type, void *to, const void *from, int len) |
1da177e4 LT |
386 | { |
387 | unsigned short *tp, *fp, clen; | |
388 | unsigned char *rtp, *rfp; | |
389 | ||
3b6e8fe7 MR |
390 | if (type == PMAD_LANCE) { |
391 | memcpy(to, from, len); | |
392 | } else if (type == PMAX_LANCE) { | |
1da177e4 LT |
393 | clen = len >> 1; |
394 | tp = (unsigned short *) to; | |
395 | fp = (unsigned short *) from; | |
396 | while (clen--) { | |
397 | *tp++ = *fp++; | |
398 | fp++; | |
399 | } | |
400 | ||
401 | clen = len & 1; | |
402 | ||
403 | rtp = (unsigned char *) tp; | |
404 | rfp = (unsigned char *) fp; | |
405 | ||
406 | while (clen--) { | |
407 | *rtp++ = *rfp++; | |
408 | } | |
409 | } else { | |
410 | ||
411 | /* | |
412 | * copy 16 Byte chunks | |
413 | */ | |
414 | clen = len >> 4; | |
415 | tp = (unsigned short *) to; | |
416 | fp = (unsigned short *) from; | |
417 | while (clen--) { | |
418 | *tp++ = *fp++; | |
419 | *tp++ = *fp++; | |
420 | *tp++ = *fp++; | |
421 | *tp++ = *fp++; | |
422 | *tp++ = *fp++; | |
423 | *tp++ = *fp++; | |
424 | *tp++ = *fp++; | |
425 | *tp++ = *fp++; | |
426 | fp += 8; | |
427 | } | |
428 | ||
429 | /* | |
430 | * do the rest, if any. | |
431 | */ | |
432 | clen = len & 15; | |
433 | rtp = (unsigned char *) tp; | |
434 | rfp = (unsigned char *) fp; | |
435 | while (clen--) { | |
436 | *rtp++ = *rfp++; | |
437 | } | |
438 | ||
439 | ||
440 | } | |
441 | ||
442 | } | |
443 | ||
444 | /* Setup the Lance Rx and Tx rings */ | |
445 | static void lance_init_ring(struct net_device *dev) | |
446 | { | |
447 | struct lance_private *lp = netdev_priv(dev); | |
3b6e8fe7 MR |
448 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
449 | uint leptr; | |
1da177e4 LT |
450 | int i; |
451 | ||
1da177e4 LT |
452 | /* Lock out other processes while setting up hardware */ |
453 | netif_stop_queue(dev); | |
454 | lp->rx_new = lp->tx_new = 0; | |
455 | lp->rx_old = lp->tx_old = 0; | |
456 | ||
457 | /* Copy the ethernet address to the lance init block. | |
458 | * XXX bit 0 of the physical address registers has to be zero | |
459 | */ | |
3b6e8fe7 MR |
460 | *lib_ptr(ib, phys_addr[0], lp->type) = (dev->dev_addr[1] << 8) | |
461 | dev->dev_addr[0]; | |
462 | *lib_ptr(ib, phys_addr[1], lp->type) = (dev->dev_addr[3] << 8) | | |
463 | dev->dev_addr[2]; | |
464 | *lib_ptr(ib, phys_addr[2], lp->type) = (dev->dev_addr[5] << 8) | | |
465 | dev->dev_addr[4]; | |
1da177e4 LT |
466 | /* Setup the initialization block */ |
467 | ||
468 | /* Setup rx descriptor pointer */ | |
3b6e8fe7 MR |
469 | leptr = offsetof(struct lance_init_block, brx_ring); |
470 | *lib_ptr(ib, rx_len, lp->type) = (LANCE_LOG_RX_BUFFERS << 13) | | |
471 | (leptr >> 16); | |
472 | *lib_ptr(ib, rx_ptr, lp->type) = leptr; | |
1da177e4 | 473 | if (ZERO) |
3b6e8fe7 MR |
474 | printk("RX ptr: %8.8x(%8.8x)\n", |
475 | leptr, lib_off(brx_ring, lp->type)); | |
1da177e4 LT |
476 | |
477 | /* Setup tx descriptor pointer */ | |
3b6e8fe7 MR |
478 | leptr = offsetof(struct lance_init_block, btx_ring); |
479 | *lib_ptr(ib, tx_len, lp->type) = (LANCE_LOG_TX_BUFFERS << 13) | | |
480 | (leptr >> 16); | |
481 | *lib_ptr(ib, tx_ptr, lp->type) = leptr; | |
1da177e4 | 482 | if (ZERO) |
3b6e8fe7 MR |
483 | printk("TX ptr: %8.8x(%8.8x)\n", |
484 | leptr, lib_off(btx_ring, lp->type)); | |
1da177e4 LT |
485 | |
486 | if (ZERO) | |
487 | printk("TX rings:\n"); | |
488 | ||
489 | /* Setup the Tx ring entries */ | |
490 | for (i = 0; i < TX_RING_SIZE; i++) { | |
3b6e8fe7 MR |
491 | leptr = lp->tx_buf_ptr_lnc[i]; |
492 | *lib_ptr(ib, btx_ring[i].tmd0, lp->type) = leptr; | |
493 | *lib_ptr(ib, btx_ring[i].tmd1, lp->type) = (leptr >> 16) & | |
494 | 0xff; | |
495 | *lib_ptr(ib, btx_ring[i].length, lp->type) = 0xf000; | |
496 | /* The ones required by tmd2 */ | |
497 | *lib_ptr(ib, btx_ring[i].misc, lp->type) = 0; | |
1da177e4 | 498 | if (i < 3 && ZERO) |
3b6e8fe7 MR |
499 | printk("%d: 0x%8.8x(0x%8.8x)\n", |
500 | i, leptr, (uint)lp->tx_buf_ptr_cpu[i]); | |
1da177e4 LT |
501 | } |
502 | ||
503 | /* Setup the Rx ring entries */ | |
504 | if (ZERO) | |
505 | printk("RX rings:\n"); | |
506 | for (i = 0; i < RX_RING_SIZE; i++) { | |
3b6e8fe7 MR |
507 | leptr = lp->rx_buf_ptr_lnc[i]; |
508 | *lib_ptr(ib, brx_ring[i].rmd0, lp->type) = leptr; | |
509 | *lib_ptr(ib, brx_ring[i].rmd1, lp->type) = ((leptr >> 16) & | |
510 | 0xff) | | |
511 | LE_R1_OWN; | |
512 | *lib_ptr(ib, brx_ring[i].length, lp->type) = -RX_BUFF_SIZE | | |
513 | 0xf000; | |
514 | *lib_ptr(ib, brx_ring[i].mblength, lp->type) = 0; | |
1da177e4 | 515 | if (i < 3 && ZERO) |
3b6e8fe7 MR |
516 | printk("%d: 0x%8.8x(0x%8.8x)\n", |
517 | i, leptr, (uint)lp->rx_buf_ptr_cpu[i]); | |
1da177e4 LT |
518 | } |
519 | iob(); | |
520 | } | |
521 | ||
522 | static int init_restart_lance(struct lance_private *lp) | |
523 | { | |
524 | volatile struct lance_regs *ll = lp->ll; | |
525 | int i; | |
526 | ||
527 | writereg(&ll->rap, LE_CSR0); | |
528 | writereg(&ll->rdp, LE_C0_INIT); | |
529 | ||
530 | /* Wait for the lance to complete initialization */ | |
531 | for (i = 0; (i < 100) && !(ll->rdp & LE_C0_IDON); i++) { | |
532 | udelay(10); | |
533 | } | |
534 | if ((i == 100) || (ll->rdp & LE_C0_ERR)) { | |
3b6e8fe7 MR |
535 | printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", |
536 | i, ll->rdp); | |
1da177e4 LT |
537 | return -1; |
538 | } | |
539 | if ((ll->rdp & LE_C0_ERR)) { | |
3b6e8fe7 MR |
540 | printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", |
541 | i, ll->rdp); | |
1da177e4 LT |
542 | return -1; |
543 | } | |
544 | writereg(&ll->rdp, LE_C0_IDON); | |
545 | writereg(&ll->rdp, LE_C0_STRT); | |
546 | writereg(&ll->rdp, LE_C0_INEA); | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
551 | static int lance_rx(struct net_device *dev) | |
552 | { | |
553 | struct lance_private *lp = netdev_priv(dev); | |
3b6e8fe7 MR |
554 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
555 | volatile u16 *rd; | |
556 | unsigned short bits; | |
557 | int entry, len; | |
558 | struct sk_buff *skb; | |
1da177e4 LT |
559 | |
560 | #ifdef TEST_HITS | |
561 | { | |
562 | int i; | |
563 | ||
564 | printk("["); | |
565 | for (i = 0; i < RX_RING_SIZE; i++) { | |
566 | if (i == lp->rx_new) | |
3b6e8fe7 MR |
567 | printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, |
568 | lp->type) & | |
1da177e4 LT |
569 | LE_R1_OWN ? "_" : "X"); |
570 | else | |
3b6e8fe7 MR |
571 | printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, |
572 | lp->type) & | |
1da177e4 LT |
573 | LE_R1_OWN ? "." : "1"); |
574 | } | |
575 | printk("]"); | |
576 | } | |
577 | #endif | |
578 | ||
3b6e8fe7 MR |
579 | for (rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type); |
580 | !((bits = *rds_ptr(rd, rmd1, lp->type)) & LE_R1_OWN); | |
581 | rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type)) { | |
582 | entry = lp->rx_new; | |
1da177e4 LT |
583 | |
584 | /* We got an incomplete frame? */ | |
585 | if ((bits & LE_R1_POK) != LE_R1_POK) { | |
586 | lp->stats.rx_over_errors++; | |
587 | lp->stats.rx_errors++; | |
588 | } else if (bits & LE_R1_ERR) { | |
589 | /* Count only the end frame as a rx error, | |
590 | * not the beginning | |
591 | */ | |
592 | if (bits & LE_R1_BUF) | |
593 | lp->stats.rx_fifo_errors++; | |
594 | if (bits & LE_R1_CRC) | |
595 | lp->stats.rx_crc_errors++; | |
596 | if (bits & LE_R1_OFL) | |
597 | lp->stats.rx_over_errors++; | |
598 | if (bits & LE_R1_FRA) | |
599 | lp->stats.rx_frame_errors++; | |
600 | if (bits & LE_R1_EOP) | |
601 | lp->stats.rx_errors++; | |
602 | } else { | |
3b6e8fe7 | 603 | len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4; |
1da177e4 LT |
604 | skb = dev_alloc_skb(len + 2); |
605 | ||
606 | if (skb == 0) { | |
607 | printk("%s: Memory squeeze, deferring packet.\n", | |
608 | dev->name); | |
609 | lp->stats.rx_dropped++; | |
3b6e8fe7 MR |
610 | *rds_ptr(rd, mblength, lp->type) = 0; |
611 | *rds_ptr(rd, rmd1, lp->type) = | |
612 | ((lp->rx_buf_ptr_lnc[entry] >> 16) & | |
613 | 0xff) | LE_R1_OWN; | |
614 | lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; | |
1da177e4 LT |
615 | return 0; |
616 | } | |
617 | lp->stats.rx_bytes += len; | |
618 | ||
1da177e4 LT |
619 | skb_reserve(skb, 2); /* 16 byte align */ |
620 | skb_put(skb, len); /* make room */ | |
621 | ||
622 | cp_from_buf(lp->type, skb->data, | |
3b6e8fe7 | 623 | (char *)lp->rx_buf_ptr_cpu[entry], len); |
1da177e4 LT |
624 | |
625 | skb->protocol = eth_type_trans(skb, dev); | |
626 | netif_rx(skb); | |
627 | dev->last_rx = jiffies; | |
628 | lp->stats.rx_packets++; | |
629 | } | |
630 | ||
631 | /* Return the packet to the pool */ | |
3b6e8fe7 MR |
632 | *rds_ptr(rd, mblength, lp->type) = 0; |
633 | *rds_ptr(rd, length, lp->type) = -RX_BUFF_SIZE | 0xf000; | |
634 | *rds_ptr(rd, rmd1, lp->type) = | |
635 | ((lp->rx_buf_ptr_lnc[entry] >> 16) & 0xff) | LE_R1_OWN; | |
636 | lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; | |
1da177e4 LT |
637 | } |
638 | return 0; | |
639 | } | |
640 | ||
641 | static void lance_tx(struct net_device *dev) | |
642 | { | |
643 | struct lance_private *lp = netdev_priv(dev); | |
3b6e8fe7 | 644 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
1da177e4 | 645 | volatile struct lance_regs *ll = lp->ll; |
3b6e8fe7 | 646 | volatile u16 *td; |
1da177e4 LT |
647 | int i, j; |
648 | int status; | |
3b6e8fe7 | 649 | |
1da177e4 LT |
650 | j = lp->tx_old; |
651 | ||
652 | spin_lock(&lp->lock); | |
653 | ||
654 | for (i = j; i != lp->tx_new; i = j) { | |
3b6e8fe7 | 655 | td = lib_ptr(ib, btx_ring[i], lp->type); |
1da177e4 | 656 | /* If we hit a packet not owned by us, stop */ |
3b6e8fe7 | 657 | if (*tds_ptr(td, tmd1, lp->type) & LE_T1_OWN) |
1da177e4 LT |
658 | break; |
659 | ||
3b6e8fe7 MR |
660 | if (*tds_ptr(td, tmd1, lp->type) & LE_T1_ERR) { |
661 | status = *tds_ptr(td, misc, lp->type); | |
1da177e4 LT |
662 | |
663 | lp->stats.tx_errors++; | |
664 | if (status & LE_T3_RTY) | |
665 | lp->stats.tx_aborted_errors++; | |
666 | if (status & LE_T3_LCOL) | |
667 | lp->stats.tx_window_errors++; | |
668 | ||
669 | if (status & LE_T3_CLOS) { | |
670 | lp->stats.tx_carrier_errors++; | |
671 | printk("%s: Carrier Lost\n", dev->name); | |
672 | /* Stop the lance */ | |
673 | writereg(&ll->rap, LE_CSR0); | |
674 | writereg(&ll->rdp, LE_C0_STOP); | |
675 | lance_init_ring(dev); | |
676 | load_csrs(lp); | |
677 | init_restart_lance(lp); | |
678 | goto out; | |
679 | } | |
680 | /* Buffer errors and underflows turn off the | |
681 | * transmitter, restart the adapter. | |
682 | */ | |
683 | if (status & (LE_T3_BUF | LE_T3_UFL)) { | |
684 | lp->stats.tx_fifo_errors++; | |
685 | ||
686 | printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", | |
687 | dev->name); | |
688 | /* Stop the lance */ | |
689 | writereg(&ll->rap, LE_CSR0); | |
690 | writereg(&ll->rdp, LE_C0_STOP); | |
691 | lance_init_ring(dev); | |
692 | load_csrs(lp); | |
693 | init_restart_lance(lp); | |
694 | goto out; | |
695 | } | |
3b6e8fe7 MR |
696 | } else if ((*tds_ptr(td, tmd1, lp->type) & LE_T1_POK) == |
697 | LE_T1_POK) { | |
1da177e4 LT |
698 | /* |
699 | * So we don't count the packet more than once. | |
700 | */ | |
3b6e8fe7 | 701 | *tds_ptr(td, tmd1, lp->type) &= ~(LE_T1_POK); |
1da177e4 LT |
702 | |
703 | /* One collision before packet was sent. */ | |
3b6e8fe7 | 704 | if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EONE) |
1da177e4 LT |
705 | lp->stats.collisions++; |
706 | ||
707 | /* More than one collision, be optimistic. */ | |
3b6e8fe7 | 708 | if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EMORE) |
1da177e4 LT |
709 | lp->stats.collisions += 2; |
710 | ||
711 | lp->stats.tx_packets++; | |
712 | } | |
713 | j = (j + 1) & TX_RING_MOD_MASK; | |
714 | } | |
715 | lp->tx_old = j; | |
716 | out: | |
717 | if (netif_queue_stopped(dev) && | |
718 | TX_BUFFS_AVAIL > 0) | |
719 | netif_wake_queue(dev); | |
720 | ||
721 | spin_unlock(&lp->lock); | |
722 | } | |
723 | ||
7d12e780 | 724 | static irqreturn_t lance_dma_merr_int(const int irq, void *dev_id) |
1da177e4 | 725 | { |
c31f28e7 | 726 | struct net_device *dev = dev_id; |
1da177e4 LT |
727 | |
728 | printk("%s: DMA error\n", dev->name); | |
da848ec3 | 729 | return IRQ_HANDLED; |
1da177e4 LT |
730 | } |
731 | ||
7d12e780 | 732 | static irqreturn_t lance_interrupt(const int irq, void *dev_id) |
1da177e4 | 733 | { |
c31f28e7 | 734 | struct net_device *dev = dev_id; |
1da177e4 LT |
735 | struct lance_private *lp = netdev_priv(dev); |
736 | volatile struct lance_regs *ll = lp->ll; | |
737 | int csr0; | |
738 | ||
739 | writereg(&ll->rap, LE_CSR0); | |
740 | csr0 = ll->rdp; | |
741 | ||
742 | /* Acknowledge all the interrupt sources ASAP */ | |
743 | writereg(&ll->rdp, csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT)); | |
744 | ||
745 | if ((csr0 & LE_C0_ERR)) { | |
746 | /* Clear the error condition */ | |
747 | writereg(&ll->rdp, LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | | |
748 | LE_C0_CERR | LE_C0_MERR); | |
749 | } | |
750 | if (csr0 & LE_C0_RINT) | |
751 | lance_rx(dev); | |
752 | ||
753 | if (csr0 & LE_C0_TINT) | |
754 | lance_tx(dev); | |
755 | ||
756 | if (csr0 & LE_C0_BABL) | |
757 | lp->stats.tx_errors++; | |
758 | ||
759 | if (csr0 & LE_C0_MISS) | |
760 | lp->stats.rx_errors++; | |
761 | ||
762 | if (csr0 & LE_C0_MERR) { | |
763 | printk("%s: Memory error, status %04x\n", dev->name, csr0); | |
764 | ||
765 | writereg(&ll->rdp, LE_C0_STOP); | |
766 | ||
767 | lance_init_ring(dev); | |
768 | load_csrs(lp); | |
769 | init_restart_lance(lp); | |
770 | netif_wake_queue(dev); | |
771 | } | |
772 | ||
773 | writereg(&ll->rdp, LE_C0_INEA); | |
774 | writereg(&ll->rdp, LE_C0_INEA); | |
775 | return IRQ_HANDLED; | |
776 | } | |
777 | ||
778 | struct net_device *last_dev = 0; | |
779 | ||
780 | static int lance_open(struct net_device *dev) | |
781 | { | |
3b6e8fe7 | 782 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
1da177e4 LT |
783 | struct lance_private *lp = netdev_priv(dev); |
784 | volatile struct lance_regs *ll = lp->ll; | |
785 | int status = 0; | |
786 | ||
787 | last_dev = dev; | |
788 | ||
789 | /* Stop the Lance */ | |
790 | writereg(&ll->rap, LE_CSR0); | |
791 | writereg(&ll->rdp, LE_C0_STOP); | |
792 | ||
793 | /* Set mode and clear multicast filter only at device open, | |
794 | * so that lance_init_ring() called at any error will not | |
795 | * forget multicast filters. | |
796 | * | |
797 | * BTW it is common bug in all lance drivers! --ANK | |
798 | */ | |
3b6e8fe7 MR |
799 | *lib_ptr(ib, mode, lp->type) = 0; |
800 | *lib_ptr(ib, filter[0], lp->type) = 0; | |
801 | *lib_ptr(ib, filter[1], lp->type) = 0; | |
802 | *lib_ptr(ib, filter[2], lp->type) = 0; | |
803 | *lib_ptr(ib, filter[3], lp->type) = 0; | |
1da177e4 LT |
804 | |
805 | lance_init_ring(dev); | |
806 | load_csrs(lp); | |
807 | ||
808 | netif_start_queue(dev); | |
809 | ||
810 | /* Associate IRQ with lance_interrupt */ | |
811 | if (request_irq(dev->irq, &lance_interrupt, 0, "lance", dev)) { | |
812 | printk("%s: Can't get IRQ %d\n", dev->name, dev->irq); | |
813 | return -EAGAIN; | |
814 | } | |
815 | if (lp->dma_irq >= 0) { | |
816 | unsigned long flags; | |
817 | ||
818 | if (request_irq(lp->dma_irq, &lance_dma_merr_int, 0, | |
819 | "lance error", dev)) { | |
820 | free_irq(dev->irq, dev); | |
821 | printk("%s: Can't get DMA IRQ %d\n", dev->name, | |
822 | lp->dma_irq); | |
823 | return -EAGAIN; | |
824 | } | |
825 | ||
826 | spin_lock_irqsave(&ioasic_ssr_lock, flags); | |
827 | ||
828 | fast_mb(); | |
829 | /* Enable I/O ASIC LANCE DMA. */ | |
830 | ioasic_write(IO_REG_SSR, | |
831 | ioasic_read(IO_REG_SSR) | IO_SSR_LANCE_DMA_EN); | |
832 | ||
833 | fast_mb(); | |
834 | spin_unlock_irqrestore(&ioasic_ssr_lock, flags); | |
835 | } | |
836 | ||
837 | status = init_restart_lance(lp); | |
838 | return status; | |
839 | } | |
840 | ||
841 | static int lance_close(struct net_device *dev) | |
842 | { | |
843 | struct lance_private *lp = netdev_priv(dev); | |
844 | volatile struct lance_regs *ll = lp->ll; | |
845 | ||
846 | netif_stop_queue(dev); | |
847 | del_timer_sync(&lp->multicast_timer); | |
848 | ||
849 | /* Stop the card */ | |
850 | writereg(&ll->rap, LE_CSR0); | |
851 | writereg(&ll->rdp, LE_C0_STOP); | |
852 | ||
853 | if (lp->dma_irq >= 0) { | |
854 | unsigned long flags; | |
855 | ||
856 | spin_lock_irqsave(&ioasic_ssr_lock, flags); | |
857 | ||
858 | fast_mb(); | |
859 | /* Disable I/O ASIC LANCE DMA. */ | |
860 | ioasic_write(IO_REG_SSR, | |
861 | ioasic_read(IO_REG_SSR) & ~IO_SSR_LANCE_DMA_EN); | |
862 | ||
863 | fast_iob(); | |
864 | spin_unlock_irqrestore(&ioasic_ssr_lock, flags); | |
865 | ||
866 | free_irq(lp->dma_irq, dev); | |
867 | } | |
868 | free_irq(dev->irq, dev); | |
869 | return 0; | |
870 | } | |
871 | ||
872 | static inline int lance_reset(struct net_device *dev) | |
873 | { | |
874 | struct lance_private *lp = netdev_priv(dev); | |
875 | volatile struct lance_regs *ll = lp->ll; | |
876 | int status; | |
877 | ||
878 | /* Stop the lance */ | |
879 | writereg(&ll->rap, LE_CSR0); | |
880 | writereg(&ll->rdp, LE_C0_STOP); | |
881 | ||
882 | lance_init_ring(dev); | |
883 | load_csrs(lp); | |
884 | dev->trans_start = jiffies; | |
885 | status = init_restart_lance(lp); | |
886 | return status; | |
887 | } | |
888 | ||
889 | static void lance_tx_timeout(struct net_device *dev) | |
890 | { | |
891 | struct lance_private *lp = netdev_priv(dev); | |
892 | volatile struct lance_regs *ll = lp->ll; | |
893 | ||
894 | printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", | |
895 | dev->name, ll->rdp); | |
896 | lance_reset(dev); | |
897 | netif_wake_queue(dev); | |
898 | } | |
899 | ||
900 | static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
901 | { | |
902 | struct lance_private *lp = netdev_priv(dev); | |
903 | volatile struct lance_regs *ll = lp->ll; | |
3b6e8fe7 MR |
904 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
905 | int entry, len; | |
1da177e4 | 906 | |
3b6e8fe7 | 907 | len = skb->len; |
6aa20a22 | 908 | |
1da177e4 | 909 | if (len < ETH_ZLEN) { |
5b057c6b | 910 | if (skb_padto(skb, ETH_ZLEN)) |
1da177e4 LT |
911 | return 0; |
912 | len = ETH_ZLEN; | |
913 | } | |
914 | ||
915 | lp->stats.tx_bytes += len; | |
916 | ||
3b6e8fe7 MR |
917 | entry = lp->tx_new; |
918 | *lib_ptr(ib, btx_ring[entry].length, lp->type) = (-len); | |
919 | *lib_ptr(ib, btx_ring[entry].misc, lp->type) = 0; | |
1da177e4 | 920 | |
3b6e8fe7 | 921 | cp_to_buf(lp->type, (char *)lp->tx_buf_ptr_cpu[entry], skb->data, len); |
1da177e4 LT |
922 | |
923 | /* Now, give the packet to the lance */ | |
3b6e8fe7 MR |
924 | *lib_ptr(ib, btx_ring[entry].tmd1, lp->type) = |
925 | ((lp->tx_buf_ptr_lnc[entry] >> 16) & 0xff) | | |
926 | (LE_T1_POK | LE_T1_OWN); | |
927 | lp->tx_new = (entry + 1) & TX_RING_MOD_MASK; | |
1da177e4 LT |
928 | |
929 | if (TX_BUFFS_AVAIL <= 0) | |
930 | netif_stop_queue(dev); | |
931 | ||
932 | /* Kick the lance: transmit now */ | |
933 | writereg(&ll->rdp, LE_C0_INEA | LE_C0_TDMD); | |
934 | ||
1da177e4 LT |
935 | dev->trans_start = jiffies; |
936 | dev_kfree_skb(skb); | |
937 | ||
938 | return 0; | |
939 | } | |
940 | ||
941 | static struct net_device_stats *lance_get_stats(struct net_device *dev) | |
942 | { | |
943 | struct lance_private *lp = netdev_priv(dev); | |
944 | ||
945 | return &lp->stats; | |
946 | } | |
947 | ||
948 | static void lance_load_multicast(struct net_device *dev) | |
949 | { | |
3b6e8fe7 MR |
950 | struct lance_private *lp = netdev_priv(dev); |
951 | volatile u16 *ib = (volatile u16 *)dev->mem_start; | |
1da177e4 LT |
952 | struct dev_mc_list *dmi = dev->mc_list; |
953 | char *addrs; | |
954 | int i; | |
955 | u32 crc; | |
956 | ||
957 | /* set all multicast bits */ | |
958 | if (dev->flags & IFF_ALLMULTI) { | |
3b6e8fe7 MR |
959 | *lib_ptr(ib, filter[0], lp->type) = 0xffff; |
960 | *lib_ptr(ib, filter[1], lp->type) = 0xffff; | |
961 | *lib_ptr(ib, filter[2], lp->type) = 0xffff; | |
962 | *lib_ptr(ib, filter[3], lp->type) = 0xffff; | |
1da177e4 LT |
963 | return; |
964 | } | |
965 | /* clear the multicast filter */ | |
3b6e8fe7 MR |
966 | *lib_ptr(ib, filter[0], lp->type) = 0; |
967 | *lib_ptr(ib, filter[1], lp->type) = 0; | |
968 | *lib_ptr(ib, filter[2], lp->type) = 0; | |
969 | *lib_ptr(ib, filter[3], lp->type) = 0; | |
1da177e4 LT |
970 | |
971 | /* Add addresses */ | |
972 | for (i = 0; i < dev->mc_count; i++) { | |
973 | addrs = dmi->dmi_addr; | |
974 | dmi = dmi->next; | |
975 | ||
976 | /* multicast address? */ | |
977 | if (!(*addrs & 1)) | |
978 | continue; | |
979 | ||
980 | crc = ether_crc_le(ETH_ALEN, addrs); | |
981 | crc = crc >> 26; | |
3b6e8fe7 | 982 | *lib_ptr(ib, filter[crc >> 4], lp->type) |= 1 << (crc & 0xf); |
1da177e4 LT |
983 | } |
984 | return; | |
985 | } | |
986 | ||
987 | static void lance_set_multicast(struct net_device *dev) | |
988 | { | |
989 | struct lance_private *lp = netdev_priv(dev); | |
3b6e8fe7 | 990 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
1da177e4 LT |
991 | volatile struct lance_regs *ll = lp->ll; |
992 | ||
1da177e4 LT |
993 | if (!netif_running(dev)) |
994 | return; | |
995 | ||
996 | if (lp->tx_old != lp->tx_new) { | |
997 | mod_timer(&lp->multicast_timer, jiffies + 4 * HZ/100); | |
998 | netif_wake_queue(dev); | |
999 | return; | |
1000 | } | |
1001 | ||
1002 | netif_stop_queue(dev); | |
1003 | ||
1004 | writereg(&ll->rap, LE_CSR0); | |
1005 | writereg(&ll->rdp, LE_C0_STOP); | |
1006 | ||
1007 | lance_init_ring(dev); | |
1008 | ||
1009 | if (dev->flags & IFF_PROMISC) { | |
3b6e8fe7 | 1010 | *lib_ptr(ib, mode, lp->type) |= LE_MO_PROM; |
1da177e4 | 1011 | } else { |
3b6e8fe7 | 1012 | *lib_ptr(ib, mode, lp->type) &= ~LE_MO_PROM; |
1da177e4 LT |
1013 | lance_load_multicast(dev); |
1014 | } | |
1015 | load_csrs(lp); | |
1016 | init_restart_lance(lp); | |
1017 | netif_wake_queue(dev); | |
1018 | } | |
1019 | ||
1020 | static void lance_set_multicast_retry(unsigned long _opaque) | |
1021 | { | |
1022 | struct net_device *dev = (struct net_device *) _opaque; | |
1023 | ||
1024 | lance_set_multicast(dev); | |
1025 | } | |
1026 | ||
257b346d | 1027 | static int __init dec_lance_probe(struct device *bdev, const int type) |
1da177e4 LT |
1028 | { |
1029 | static unsigned version_printed; | |
1030 | static const char fmt[] = "declance%d"; | |
1031 | char name[10]; | |
1032 | struct net_device *dev; | |
1033 | struct lance_private *lp; | |
1034 | volatile struct lance_regs *ll; | |
257b346d | 1035 | resource_size_t start = 0, len = 0; |
1da177e4 LT |
1036 | int i, ret; |
1037 | unsigned long esar_base; | |
1038 | unsigned char *esar; | |
1039 | ||
1da177e4 LT |
1040 | if (dec_lance_debug && version_printed++ == 0) |
1041 | printk(version); | |
1042 | ||
257b346d MR |
1043 | if (bdev) |
1044 | snprintf(name, sizeof(name), "%s", bdev->bus_id); | |
1045 | else { | |
1046 | i = 0; | |
1047 | dev = root_lance_dev; | |
1048 | while (dev) { | |
1049 | i++; | |
1050 | lp = (struct lance_private *)dev->priv; | |
1051 | dev = lp->next; | |
1052 | } | |
1053 | snprintf(name, sizeof(name), fmt, i); | |
1da177e4 | 1054 | } |
1da177e4 LT |
1055 | |
1056 | dev = alloc_etherdev(sizeof(struct lance_private)); | |
1057 | if (!dev) { | |
1058 | printk(KERN_ERR "%s: Unable to allocate etherdev, aborting.\n", | |
1059 | name); | |
1060 | ret = -ENOMEM; | |
1061 | goto err_out; | |
1062 | } | |
1063 | ||
1064 | /* | |
1065 | * alloc_etherdev ensures the data structures used by the LANCE | |
1066 | * are aligned. | |
1067 | */ | |
1068 | lp = netdev_priv(dev); | |
1069 | spin_lock_init(&lp->lock); | |
1070 | ||
1071 | lp->type = type; | |
1da177e4 | 1072 | switch (type) { |
1da177e4 | 1073 | case ASIC_LANCE: |
36156cdf | 1074 | dev->base_addr = CKSEG1ADDR(dec_kn_slot_base + IOASIC_LANCE); |
1da177e4 LT |
1075 | |
1076 | /* buffer space for the on-board LANCE shared memory */ | |
1077 | /* | |
1078 | * FIXME: ugly hack! | |
1079 | */ | |
4569504a | 1080 | dev->mem_start = CKSEG1ADDR(0x00020000); |
1da177e4 LT |
1081 | dev->mem_end = dev->mem_start + 0x00020000; |
1082 | dev->irq = dec_interrupt[DEC_IRQ_LANCE]; | |
36156cdf | 1083 | esar_base = CKSEG1ADDR(dec_kn_slot_base + IOASIC_ESAR); |
1da177e4 LT |
1084 | |
1085 | /* Workaround crash with booting KN04 2.1k from Disk */ | |
1086 | memset((void *)dev->mem_start, 0, | |
1087 | dev->mem_end - dev->mem_start); | |
1088 | ||
1089 | /* | |
1090 | * setup the pointer arrays, this sucks [tm] :-( | |
1091 | */ | |
1092 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1093 | lp->rx_buf_ptr_cpu[i] = | |
3b6e8fe7 | 1094 | (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
1da177e4 LT |
1095 | 2 * i * RX_BUFF_SIZE); |
1096 | lp->rx_buf_ptr_lnc[i] = | |
3b6e8fe7 | 1097 | (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
1da177e4 LT |
1098 | } |
1099 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1100 | lp->tx_buf_ptr_cpu[i] = | |
3b6e8fe7 | 1101 | (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
1da177e4 LT |
1102 | 2 * RX_RING_SIZE * RX_BUFF_SIZE + |
1103 | 2 * i * TX_BUFF_SIZE); | |
1104 | lp->tx_buf_ptr_lnc[i] = | |
3b6e8fe7 MR |
1105 | (BUF_OFFSET_LNC + |
1106 | RX_RING_SIZE * RX_BUFF_SIZE + | |
1107 | i * TX_BUFF_SIZE); | |
1da177e4 LT |
1108 | } |
1109 | ||
1110 | /* Setup I/O ASIC LANCE DMA. */ | |
1111 | lp->dma_irq = dec_interrupt[DEC_IRQ_LANCE_MERR]; | |
1112 | ioasic_write(IO_REG_LANCE_DMA_P, | |
6684b4e2 | 1113 | CPHYSADDR(dev->mem_start) << 3); |
1da177e4 LT |
1114 | |
1115 | break; | |
e8f7f7f1 | 1116 | #ifdef CONFIG_TC |
1da177e4 | 1117 | case PMAD_LANCE: |
257b346d MR |
1118 | dev_set_drvdata(bdev, dev); |
1119 | ||
1120 | start = to_tc_dev(bdev)->resource.start; | |
1121 | len = to_tc_dev(bdev)->resource.end - start + 1; | |
1122 | if (!request_mem_region(start, len, bdev->bus_id)) { | |
1123 | printk(KERN_ERR | |
1124 | "%s: Unable to reserve MMIO resource\n", | |
1125 | bdev->bus_id); | |
1126 | ret = -EBUSY; | |
1127 | goto err_out_dev; | |
1128 | } | |
1da177e4 | 1129 | |
257b346d | 1130 | dev->mem_start = CKSEG1ADDR(start); |
3b6e8fe7 | 1131 | dev->mem_end = dev->mem_start + 0x100000; |
1da177e4 | 1132 | dev->base_addr = dev->mem_start + 0x100000; |
257b346d | 1133 | dev->irq = to_tc_dev(bdev)->interrupt; |
1da177e4 LT |
1134 | esar_base = dev->mem_start + 0x1c0002; |
1135 | lp->dma_irq = -1; | |
1136 | ||
1137 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1138 | lp->rx_buf_ptr_cpu[i] = | |
1139 | (char *)(dev->mem_start + BUF_OFFSET_CPU + | |
1140 | i * RX_BUFF_SIZE); | |
1141 | lp->rx_buf_ptr_lnc[i] = | |
3b6e8fe7 | 1142 | (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
1da177e4 LT |
1143 | } |
1144 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1145 | lp->tx_buf_ptr_cpu[i] = | |
1146 | (char *)(dev->mem_start + BUF_OFFSET_CPU + | |
1147 | RX_RING_SIZE * RX_BUFF_SIZE + | |
1148 | i * TX_BUFF_SIZE); | |
1149 | lp->tx_buf_ptr_lnc[i] = | |
3b6e8fe7 MR |
1150 | (BUF_OFFSET_LNC + |
1151 | RX_RING_SIZE * RX_BUFF_SIZE + | |
1152 | i * TX_BUFF_SIZE); | |
1da177e4 LT |
1153 | } |
1154 | ||
1155 | break; | |
1156 | #endif | |
1da177e4 LT |
1157 | case PMAX_LANCE: |
1158 | dev->irq = dec_interrupt[DEC_IRQ_LANCE]; | |
36156cdf RB |
1159 | dev->base_addr = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE); |
1160 | dev->mem_start = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE_MEM); | |
3b6e8fe7 | 1161 | dev->mem_end = dev->mem_start + KN01_SLOT_SIZE; |
36156cdf | 1162 | esar_base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_ESAR + 1); |
1da177e4 LT |
1163 | lp->dma_irq = -1; |
1164 | ||
1165 | /* | |
1166 | * setup the pointer arrays, this sucks [tm] :-( | |
1167 | */ | |
1168 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1169 | lp->rx_buf_ptr_cpu[i] = | |
3b6e8fe7 | 1170 | (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
1da177e4 LT |
1171 | 2 * i * RX_BUFF_SIZE); |
1172 | lp->rx_buf_ptr_lnc[i] = | |
3b6e8fe7 | 1173 | (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
1da177e4 LT |
1174 | } |
1175 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1176 | lp->tx_buf_ptr_cpu[i] = | |
3b6e8fe7 | 1177 | (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
1da177e4 LT |
1178 | 2 * RX_RING_SIZE * RX_BUFF_SIZE + |
1179 | 2 * i * TX_BUFF_SIZE); | |
1180 | lp->tx_buf_ptr_lnc[i] = | |
3b6e8fe7 MR |
1181 | (BUF_OFFSET_LNC + |
1182 | RX_RING_SIZE * RX_BUFF_SIZE + | |
1183 | i * TX_BUFF_SIZE); | |
1da177e4 LT |
1184 | } |
1185 | ||
1186 | break; | |
1187 | ||
1188 | default: | |
1189 | printk(KERN_ERR "%s: declance_init called with unknown type\n", | |
1190 | name); | |
1191 | ret = -ENODEV; | |
257b346d | 1192 | goto err_out_dev; |
1da177e4 LT |
1193 | } |
1194 | ||
1195 | ll = (struct lance_regs *) dev->base_addr; | |
1196 | esar = (unsigned char *) esar_base; | |
1197 | ||
1198 | /* prom checks */ | |
1199 | /* First, check for test pattern */ | |
1200 | if (esar[0x60] != 0xff && esar[0x64] != 0x00 && | |
1201 | esar[0x68] != 0x55 && esar[0x6c] != 0xaa) { | |
1202 | printk(KERN_ERR | |
1203 | "%s: Ethernet station address prom not found!\n", | |
1204 | name); | |
1205 | ret = -ENODEV; | |
257b346d | 1206 | goto err_out_resource; |
1da177e4 LT |
1207 | } |
1208 | /* Check the prom contents */ | |
1209 | for (i = 0; i < 8; i++) { | |
1210 | if (esar[i * 4] != esar[0x3c - i * 4] && | |
1211 | esar[i * 4] != esar[0x40 + i * 4] && | |
1212 | esar[0x3c - i * 4] != esar[0x40 + i * 4]) { | |
1213 | printk(KERN_ERR "%s: Something is wrong with the " | |
1214 | "ethernet station address prom!\n", name); | |
1215 | ret = -ENODEV; | |
257b346d | 1216 | goto err_out_resource; |
1da177e4 LT |
1217 | } |
1218 | } | |
1219 | ||
1220 | /* Copy the ethernet address to the device structure, later to the | |
1221 | * lance initialization block so the lance gets it every time it's | |
1222 | * (re)initialized. | |
1223 | */ | |
1224 | switch (type) { | |
1225 | case ASIC_LANCE: | |
1226 | printk("%s: IOASIC onboard LANCE, addr = ", name); | |
1227 | break; | |
1228 | case PMAD_LANCE: | |
1229 | printk("%s: PMAD-AA, addr = ", name); | |
1230 | break; | |
1231 | case PMAX_LANCE: | |
1232 | printk("%s: PMAX onboard LANCE, addr = ", name); | |
1233 | break; | |
1234 | } | |
1235 | for (i = 0; i < 6; i++) { | |
1236 | dev->dev_addr[i] = esar[i * 4]; | |
1237 | printk("%2.2x%c", dev->dev_addr[i], i == 5 ? ',' : ':'); | |
1238 | } | |
1239 | ||
1240 | printk(" irq = %d\n", dev->irq); | |
1241 | ||
1242 | dev->open = &lance_open; | |
1243 | dev->stop = &lance_close; | |
1244 | dev->hard_start_xmit = &lance_start_xmit; | |
1245 | dev->tx_timeout = &lance_tx_timeout; | |
1246 | dev->watchdog_timeo = 5*HZ; | |
1247 | dev->get_stats = &lance_get_stats; | |
1248 | dev->set_multicast_list = &lance_set_multicast; | |
1249 | ||
1250 | /* lp->ll is the location of the registers for lance card */ | |
1251 | lp->ll = ll; | |
1252 | ||
1253 | /* busmaster_regval (CSR3) should be zero according to the PMAD-AA | |
1254 | * specification. | |
1255 | */ | |
1256 | lp->busmaster_regval = 0; | |
1257 | ||
1258 | dev->dma = 0; | |
1259 | ||
1260 | /* We cannot sleep if the chip is busy during a | |
1261 | * multicast list update event, because such events | |
1262 | * can occur from interrupts (ex. IPv6). So we | |
1263 | * use a timer to try again later when necessary. -DaveM | |
1264 | */ | |
1265 | init_timer(&lp->multicast_timer); | |
1266 | lp->multicast_timer.data = (unsigned long) dev; | |
1267 | lp->multicast_timer.function = &lance_set_multicast_retry; | |
1268 | ||
1269 | ret = register_netdev(dev); | |
1270 | if (ret) { | |
1271 | printk(KERN_ERR | |
1272 | "%s: Unable to register netdev, aborting.\n", name); | |
257b346d | 1273 | goto err_out_resource; |
1da177e4 LT |
1274 | } |
1275 | ||
257b346d MR |
1276 | if (!bdev) { |
1277 | lp->next = root_lance_dev; | |
1278 | root_lance_dev = dev; | |
1279 | } | |
1da177e4 LT |
1280 | |
1281 | printk("%s: registered as %s.\n", name, dev->name); | |
1282 | return 0; | |
1283 | ||
257b346d MR |
1284 | err_out_resource: |
1285 | if (bdev) | |
1286 | release_mem_region(start, len); | |
1287 | ||
1288 | err_out_dev: | |
b07db75a | 1289 | free_netdev(dev); |
1da177e4 LT |
1290 | |
1291 | err_out: | |
1292 | return ret; | |
1293 | } | |
1294 | ||
257b346d MR |
1295 | static void __exit dec_lance_remove(struct device *bdev) |
1296 | { | |
1297 | struct net_device *dev = dev_get_drvdata(bdev); | |
1298 | resource_size_t start, len; | |
1299 | ||
1300 | unregister_netdev(dev); | |
1301 | start = to_tc_dev(bdev)->resource.start; | |
1302 | len = to_tc_dev(bdev)->resource.end - start + 1; | |
1303 | release_mem_region(start, len); | |
1304 | free_netdev(dev); | |
1305 | } | |
1da177e4 LT |
1306 | |
1307 | /* Find all the lance cards on the system and initialize them */ | |
257b346d | 1308 | static int __init dec_lance_platform_probe(void) |
1da177e4 LT |
1309 | { |
1310 | int count = 0; | |
1311 | ||
1da177e4 LT |
1312 | if (dec_interrupt[DEC_IRQ_LANCE] >= 0) { |
1313 | if (dec_interrupt[DEC_IRQ_LANCE_MERR] >= 0) { | |
257b346d | 1314 | if (dec_lance_probe(NULL, ASIC_LANCE) >= 0) |
1da177e4 | 1315 | count++; |
1da177e4 | 1316 | } else if (!TURBOCHANNEL) { |
257b346d | 1317 | if (dec_lance_probe(NULL, PMAX_LANCE) >= 0) |
1da177e4 LT |
1318 | count++; |
1319 | } | |
1320 | } | |
1321 | ||
1322 | return (count > 0) ? 0 : -ENODEV; | |
1323 | } | |
1324 | ||
257b346d | 1325 | static void __exit dec_lance_platform_remove(void) |
1da177e4 LT |
1326 | { |
1327 | while (root_lance_dev) { | |
1328 | struct net_device *dev = root_lance_dev; | |
1329 | struct lance_private *lp = netdev_priv(dev); | |
b07db75a | 1330 | |
1da177e4 | 1331 | unregister_netdev(dev); |
1da177e4 LT |
1332 | root_lance_dev = lp->next; |
1333 | free_netdev(dev); | |
1334 | } | |
1335 | } | |
1336 | ||
257b346d MR |
1337 | #ifdef CONFIG_TC |
1338 | static int __init dec_lance_tc_probe(struct device *dev); | |
1339 | static int __exit dec_lance_tc_remove(struct device *dev); | |
1340 | ||
1341 | static const struct tc_device_id dec_lance_tc_table[] = { | |
1342 | { "DEC ", "PMAD-AA " }, | |
1343 | { } | |
1344 | }; | |
1345 | MODULE_DEVICE_TABLE(tc, dec_lance_tc_table); | |
1346 | ||
1347 | static struct tc_driver dec_lance_tc_driver = { | |
1348 | .id_table = dec_lance_tc_table, | |
1349 | .driver = { | |
1350 | .name = "declance", | |
1351 | .bus = &tc_bus_type, | |
1352 | .probe = dec_lance_tc_probe, | |
1353 | .remove = __exit_p(dec_lance_tc_remove), | |
1354 | }, | |
1355 | }; | |
1356 | ||
1357 | static int __init dec_lance_tc_probe(struct device *dev) | |
1358 | { | |
1359 | int status = dec_lance_probe(dev, PMAD_LANCE); | |
1360 | if (!status) | |
1361 | get_device(dev); | |
1362 | return status; | |
1363 | } | |
1364 | ||
1365 | static int __exit dec_lance_tc_remove(struct device *dev) | |
1366 | { | |
1367 | put_device(dev); | |
1368 | dec_lance_remove(dev); | |
1369 | return 0; | |
1370 | } | |
1371 | #endif | |
1372 | ||
1373 | static int __init dec_lance_init(void) | |
1374 | { | |
1375 | int status; | |
1376 | ||
1377 | status = tc_register_driver(&dec_lance_tc_driver); | |
1378 | if (!status) | |
1379 | dec_lance_platform_probe(); | |
1380 | return status; | |
1381 | } | |
1382 | ||
1383 | static void __exit dec_lance_exit(void) | |
1384 | { | |
1385 | dec_lance_platform_remove(); | |
1386 | tc_unregister_driver(&dec_lance_tc_driver); | |
1387 | } | |
1388 | ||
1389 | ||
1390 | module_init(dec_lance_init); | |
1391 | module_exit(dec_lance_exit); |