Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
6aa20a22 | 2 | /* |
1da177e4 LT |
3 | * Lance ethernet driver for the MIPS processor based |
4 | * DECstation family | |
5 | * | |
6 | * | |
7 | * adopted from sunlance.c by Richard van den Berg | |
8 | * | |
257b346d | 9 | * Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki |
1da177e4 LT |
10 | * |
11 | * additional sources: | |
12 | * - PMAD-AA TURBOchannel Ethernet Module Functional Specification, | |
13 | * Revision 1.2 | |
14 | * | |
15 | * History: | |
16 | * | |
17 | * v0.001: The kernel accepts the code and it shows the hardware address. | |
18 | * | |
19 | * v0.002: Removed most sparc stuff, left only some module and dma stuff. | |
20 | * | |
21 | * v0.003: Enhanced base address calculation from proposals by | |
22 | * Harald Koerfgen and Thomas Riemer. | |
23 | * | |
24 | * v0.004: lance-regs is pointing at the right addresses, added prom | |
25 | * check. First start of address mapping and DMA. | |
26 | * | |
27 | * v0.005: started to play around with LANCE-DMA. This driver will not | |
28 | * work for non IOASIC lances. HK | |
29 | * | |
30 | * v0.006: added pointer arrays to lance_private and setup routine for | |
31 | * them in dec_lance_init. HK | |
32 | * | |
33 | * v0.007: Big shit. The LANCE seems to use a different DMA mechanism to | |
34 | * access the init block. This looks like one (short) word at a | |
35 | * time, but the smallest amount the IOASIC can transfer is a | |
36 | * (long) word. So we have a 2-2 padding here. Changed | |
37 | * lance_init_block accordingly. The 16-16 padding for the buffers | |
38 | * seems to be correct. HK | |
39 | * | |
40 | * v0.008: mods to make PMAX_LANCE work. 01/09/1999 triemer | |
41 | * | |
42 | * v0.009: Module support fixes, multiple interfaces support, various | |
43 | * bits. macro | |
3b6e8fe7 MR |
44 | * |
45 | * v0.010: Fixes for the PMAD mapping of the LANCE buffer and for the | |
46 | * PMAX requirement to only use halfword accesses to the | |
47 | * buffer. macro | |
257b346d MR |
48 | * |
49 | * v0.011: Converted the PMAD to the driver model. macro | |
1da177e4 LT |
50 | */ |
51 | ||
1da177e4 LT |
52 | #include <linux/crc32.h> |
53 | #include <linux/delay.h> | |
54 | #include <linux/errno.h> | |
55 | #include <linux/if_ether.h> | |
56 | #include <linux/init.h> | |
57 | #include <linux/kernel.h> | |
58 | #include <linux/module.h> | |
59 | #include <linux/netdevice.h> | |
60 | #include <linux/etherdevice.h> | |
61 | #include <linux/spinlock.h> | |
62 | #include <linux/stddef.h> | |
63 | #include <linux/string.h> | |
257b346d | 64 | #include <linux/tc.h> |
3b6e8fe7 | 65 | #include <linux/types.h> |
1da177e4 LT |
66 | |
67 | #include <asm/addrspace.h> | |
36156cdf | 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 | 75 | |
06324664 | 76 | static const char version[] = |
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 | ||
1da177e4 LT |
261 | unsigned short busmaster_regval; |
262 | ||
263 | struct timer_list multicast_timer; | |
c6c52ba1 | 264 | struct net_device *dev; |
1da177e4 LT |
265 | |
266 | /* Pointers to the ring buffers as seen from the CPU */ | |
267 | char *rx_buf_ptr_cpu[RX_RING_SIZE]; | |
268 | char *tx_buf_ptr_cpu[TX_RING_SIZE]; | |
269 | ||
270 | /* Pointers to the ring buffers as seen from the LANCE */ | |
3b6e8fe7 MR |
271 | uint rx_buf_ptr_lnc[RX_RING_SIZE]; |
272 | uint tx_buf_ptr_lnc[TX_RING_SIZE]; | |
1da177e4 LT |
273 | }; |
274 | ||
275 | #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ | |
276 | lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ | |
277 | lp->tx_old - lp->tx_new-1) | |
278 | ||
279 | /* The lance control ports are at an absolute address, machine and tc-slot | |
280 | * dependent. | |
281 | * DECstations do only 32-bit access and the LANCE uses 16 bit addresses, | |
282 | * so we have to give the structure an extra member making rap pointing | |
283 | * at the right address | |
284 | */ | |
285 | struct lance_regs { | |
286 | volatile unsigned short rdp; /* register data port */ | |
287 | unsigned short pad; | |
288 | volatile unsigned short rap; /* register address port */ | |
289 | }; | |
290 | ||
291 | int dec_lance_debug = 2; | |
292 | ||
257b346d | 293 | static struct tc_driver dec_lance_tc_driver; |
1da177e4 LT |
294 | static struct net_device *root_lance_dev; |
295 | ||
296 | static inline void writereg(volatile unsigned short *regptr, short value) | |
297 | { | |
298 | *regptr = value; | |
299 | iob(); | |
300 | } | |
301 | ||
302 | /* Load the CSR registers */ | |
303 | static void load_csrs(struct lance_private *lp) | |
304 | { | |
305 | volatile struct lance_regs *ll = lp->ll; | |
3b6e8fe7 | 306 | uint leptr; |
1da177e4 LT |
307 | |
308 | /* The address space as seen from the LANCE | |
309 | * begins at address 0. HK | |
310 | */ | |
311 | leptr = 0; | |
312 | ||
313 | writereg(&ll->rap, LE_CSR1); | |
314 | writereg(&ll->rdp, (leptr & 0xFFFF)); | |
315 | writereg(&ll->rap, LE_CSR2); | |
316 | writereg(&ll->rdp, leptr >> 16); | |
317 | writereg(&ll->rap, LE_CSR3); | |
318 | writereg(&ll->rdp, lp->busmaster_regval); | |
319 | ||
320 | /* Point back to csr0 */ | |
321 | writereg(&ll->rap, LE_CSR0); | |
322 | } | |
323 | ||
324 | /* | |
325 | * Our specialized copy routines | |
326 | * | |
327 | */ | |
3b6e8fe7 | 328 | static void cp_to_buf(const int type, void *to, const void *from, int len) |
1da177e4 | 329 | { |
43d620c8 JP |
330 | unsigned short *tp; |
331 | const unsigned short *fp; | |
332 | unsigned short clen; | |
333 | unsigned char *rtp; | |
334 | const unsigned char *rfp; | |
1da177e4 | 335 | |
3b6e8fe7 MR |
336 | if (type == PMAD_LANCE) { |
337 | memcpy(to, from, len); | |
338 | } else if (type == PMAX_LANCE) { | |
1da177e4 | 339 | clen = len >> 1; |
43d620c8 JP |
340 | tp = to; |
341 | fp = from; | |
1da177e4 LT |
342 | |
343 | while (clen--) { | |
344 | *tp++ = *fp++; | |
345 | tp++; | |
346 | } | |
347 | ||
348 | clen = len & 1; | |
19717d05 MR |
349 | rtp = (unsigned char *)tp; |
350 | rfp = (const unsigned char *)fp; | |
1da177e4 LT |
351 | while (clen--) { |
352 | *rtp++ = *rfp++; | |
353 | } | |
354 | } else { | |
355 | /* | |
356 | * copy 16 Byte chunks | |
357 | */ | |
358 | clen = len >> 4; | |
43d620c8 JP |
359 | tp = to; |
360 | fp = from; | |
1da177e4 LT |
361 | while (clen--) { |
362 | *tp++ = *fp++; | |
363 | *tp++ = *fp++; | |
364 | *tp++ = *fp++; | |
365 | *tp++ = *fp++; | |
366 | *tp++ = *fp++; | |
367 | *tp++ = *fp++; | |
368 | *tp++ = *fp++; | |
369 | *tp++ = *fp++; | |
370 | tp += 8; | |
371 | } | |
372 | ||
373 | /* | |
374 | * do the rest, if any. | |
375 | */ | |
376 | clen = len & 15; | |
19717d05 MR |
377 | rtp = (unsigned char *)tp; |
378 | rfp = (const unsigned char *)fp; | |
1da177e4 LT |
379 | while (clen--) { |
380 | *rtp++ = *rfp++; | |
381 | } | |
382 | } | |
383 | ||
384 | iob(); | |
385 | } | |
386 | ||
3b6e8fe7 | 387 | static void cp_from_buf(const int type, void *to, const void *from, int len) |
1da177e4 | 388 | { |
43d620c8 JP |
389 | unsigned short *tp; |
390 | const unsigned short *fp; | |
391 | unsigned short clen; | |
392 | unsigned char *rtp; | |
393 | const unsigned char *rfp; | |
1da177e4 | 394 | |
3b6e8fe7 MR |
395 | if (type == PMAD_LANCE) { |
396 | memcpy(to, from, len); | |
397 | } else if (type == PMAX_LANCE) { | |
1da177e4 | 398 | clen = len >> 1; |
43d620c8 JP |
399 | tp = to; |
400 | fp = from; | |
1da177e4 LT |
401 | while (clen--) { |
402 | *tp++ = *fp++; | |
403 | fp++; | |
404 | } | |
405 | ||
406 | clen = len & 1; | |
407 | ||
19717d05 MR |
408 | rtp = (unsigned char *)tp; |
409 | rfp = (const unsigned char *)fp; | |
1da177e4 LT |
410 | |
411 | while (clen--) { | |
412 | *rtp++ = *rfp++; | |
413 | } | |
414 | } else { | |
415 | ||
416 | /* | |
417 | * copy 16 Byte chunks | |
418 | */ | |
419 | clen = len >> 4; | |
43d620c8 JP |
420 | tp = to; |
421 | fp = from; | |
1da177e4 LT |
422 | while (clen--) { |
423 | *tp++ = *fp++; | |
424 | *tp++ = *fp++; | |
425 | *tp++ = *fp++; | |
426 | *tp++ = *fp++; | |
427 | *tp++ = *fp++; | |
428 | *tp++ = *fp++; | |
429 | *tp++ = *fp++; | |
430 | *tp++ = *fp++; | |
431 | fp += 8; | |
432 | } | |
433 | ||
434 | /* | |
435 | * do the rest, if any. | |
436 | */ | |
437 | clen = len & 15; | |
19717d05 MR |
438 | rtp = (unsigned char *)tp; |
439 | rfp = (const unsigned char *)fp; | |
1da177e4 LT |
440 | while (clen--) { |
441 | *rtp++ = *rfp++; | |
442 | } | |
443 | ||
444 | ||
445 | } | |
446 | ||
447 | } | |
448 | ||
449 | /* Setup the Lance Rx and Tx rings */ | |
450 | static void lance_init_ring(struct net_device *dev) | |
451 | { | |
452 | struct lance_private *lp = netdev_priv(dev); | |
3b6e8fe7 MR |
453 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
454 | uint leptr; | |
1da177e4 LT |
455 | int i; |
456 | ||
1da177e4 LT |
457 | /* Lock out other processes while setting up hardware */ |
458 | netif_stop_queue(dev); | |
459 | lp->rx_new = lp->tx_new = 0; | |
460 | lp->rx_old = lp->tx_old = 0; | |
461 | ||
462 | /* Copy the ethernet address to the lance init block. | |
463 | * XXX bit 0 of the physical address registers has to be zero | |
464 | */ | |
3b6e8fe7 MR |
465 | *lib_ptr(ib, phys_addr[0], lp->type) = (dev->dev_addr[1] << 8) | |
466 | dev->dev_addr[0]; | |
467 | *lib_ptr(ib, phys_addr[1], lp->type) = (dev->dev_addr[3] << 8) | | |
468 | dev->dev_addr[2]; | |
469 | *lib_ptr(ib, phys_addr[2], lp->type) = (dev->dev_addr[5] << 8) | | |
470 | dev->dev_addr[4]; | |
1da177e4 LT |
471 | /* Setup the initialization block */ |
472 | ||
473 | /* Setup rx descriptor pointer */ | |
3b6e8fe7 MR |
474 | leptr = offsetof(struct lance_init_block, brx_ring); |
475 | *lib_ptr(ib, rx_len, lp->type) = (LANCE_LOG_RX_BUFFERS << 13) | | |
476 | (leptr >> 16); | |
477 | *lib_ptr(ib, rx_ptr, lp->type) = leptr; | |
1da177e4 | 478 | if (ZERO) |
3b6e8fe7 | 479 | printk("RX ptr: %8.8x(%8.8x)\n", |
3d5baba0 | 480 | leptr, (uint)lib_off(brx_ring, lp->type)); |
1da177e4 LT |
481 | |
482 | /* Setup tx descriptor pointer */ | |
3b6e8fe7 MR |
483 | leptr = offsetof(struct lance_init_block, btx_ring); |
484 | *lib_ptr(ib, tx_len, lp->type) = (LANCE_LOG_TX_BUFFERS << 13) | | |
485 | (leptr >> 16); | |
486 | *lib_ptr(ib, tx_ptr, lp->type) = leptr; | |
1da177e4 | 487 | if (ZERO) |
3b6e8fe7 | 488 | printk("TX ptr: %8.8x(%8.8x)\n", |
3d5baba0 | 489 | leptr, (uint)lib_off(btx_ring, lp->type)); |
1da177e4 LT |
490 | |
491 | if (ZERO) | |
492 | printk("TX rings:\n"); | |
493 | ||
494 | /* Setup the Tx ring entries */ | |
495 | for (i = 0; i < TX_RING_SIZE; i++) { | |
3b6e8fe7 MR |
496 | leptr = lp->tx_buf_ptr_lnc[i]; |
497 | *lib_ptr(ib, btx_ring[i].tmd0, lp->type) = leptr; | |
498 | *lib_ptr(ib, btx_ring[i].tmd1, lp->type) = (leptr >> 16) & | |
499 | 0xff; | |
500 | *lib_ptr(ib, btx_ring[i].length, lp->type) = 0xf000; | |
501 | /* The ones required by tmd2 */ | |
502 | *lib_ptr(ib, btx_ring[i].misc, lp->type) = 0; | |
1da177e4 | 503 | if (i < 3 && ZERO) |
3d5baba0 MR |
504 | printk("%d: %8.8x(%p)\n", |
505 | i, leptr, lp->tx_buf_ptr_cpu[i]); | |
1da177e4 LT |
506 | } |
507 | ||
508 | /* Setup the Rx ring entries */ | |
509 | if (ZERO) | |
510 | printk("RX rings:\n"); | |
511 | for (i = 0; i < RX_RING_SIZE; i++) { | |
3b6e8fe7 MR |
512 | leptr = lp->rx_buf_ptr_lnc[i]; |
513 | *lib_ptr(ib, brx_ring[i].rmd0, lp->type) = leptr; | |
514 | *lib_ptr(ib, brx_ring[i].rmd1, lp->type) = ((leptr >> 16) & | |
515 | 0xff) | | |
516 | LE_R1_OWN; | |
517 | *lib_ptr(ib, brx_ring[i].length, lp->type) = -RX_BUFF_SIZE | | |
518 | 0xf000; | |
519 | *lib_ptr(ib, brx_ring[i].mblength, lp->type) = 0; | |
1da177e4 | 520 | if (i < 3 && ZERO) |
3d5baba0 MR |
521 | printk("%d: %8.8x(%p)\n", |
522 | i, leptr, lp->rx_buf_ptr_cpu[i]); | |
1da177e4 LT |
523 | } |
524 | iob(); | |
525 | } | |
526 | ||
527 | static int init_restart_lance(struct lance_private *lp) | |
528 | { | |
529 | volatile struct lance_regs *ll = lp->ll; | |
530 | int i; | |
531 | ||
532 | writereg(&ll->rap, LE_CSR0); | |
533 | writereg(&ll->rdp, LE_C0_INIT); | |
534 | ||
535 | /* Wait for the lance to complete initialization */ | |
536 | for (i = 0; (i < 100) && !(ll->rdp & LE_C0_IDON); i++) { | |
537 | udelay(10); | |
538 | } | |
539 | if ((i == 100) || (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 | if ((ll->rdp & LE_C0_ERR)) { | |
3b6e8fe7 MR |
545 | printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", |
546 | i, ll->rdp); | |
1da177e4 LT |
547 | return -1; |
548 | } | |
549 | writereg(&ll->rdp, LE_C0_IDON); | |
550 | writereg(&ll->rdp, LE_C0_STRT); | |
551 | writereg(&ll->rdp, LE_C0_INEA); | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | static int lance_rx(struct net_device *dev) | |
557 | { | |
558 | struct lance_private *lp = netdev_priv(dev); | |
3b6e8fe7 MR |
559 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
560 | volatile u16 *rd; | |
561 | unsigned short bits; | |
562 | int entry, len; | |
563 | struct sk_buff *skb; | |
1da177e4 LT |
564 | |
565 | #ifdef TEST_HITS | |
566 | { | |
567 | int i; | |
568 | ||
569 | printk("["); | |
570 | for (i = 0; i < RX_RING_SIZE; i++) { | |
571 | if (i == lp->rx_new) | |
3b6e8fe7 MR |
572 | printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, |
573 | lp->type) & | |
1da177e4 LT |
574 | LE_R1_OWN ? "_" : "X"); |
575 | else | |
3b6e8fe7 MR |
576 | printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, |
577 | lp->type) & | |
1da177e4 LT |
578 | LE_R1_OWN ? "." : "1"); |
579 | } | |
580 | printk("]"); | |
581 | } | |
582 | #endif | |
583 | ||
3b6e8fe7 MR |
584 | for (rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type); |
585 | !((bits = *rds_ptr(rd, rmd1, lp->type)) & LE_R1_OWN); | |
586 | rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type)) { | |
587 | entry = lp->rx_new; | |
1da177e4 LT |
588 | |
589 | /* We got an incomplete frame? */ | |
590 | if ((bits & LE_R1_POK) != LE_R1_POK) { | |
09f75cd7 JG |
591 | dev->stats.rx_over_errors++; |
592 | dev->stats.rx_errors++; | |
1da177e4 LT |
593 | } else if (bits & LE_R1_ERR) { |
594 | /* Count only the end frame as a rx error, | |
595 | * not the beginning | |
596 | */ | |
597 | if (bits & LE_R1_BUF) | |
09f75cd7 | 598 | dev->stats.rx_fifo_errors++; |
1da177e4 | 599 | if (bits & LE_R1_CRC) |
09f75cd7 | 600 | dev->stats.rx_crc_errors++; |
1da177e4 | 601 | if (bits & LE_R1_OFL) |
09f75cd7 | 602 | dev->stats.rx_over_errors++; |
1da177e4 | 603 | if (bits & LE_R1_FRA) |
09f75cd7 | 604 | dev->stats.rx_frame_errors++; |
1da177e4 | 605 | if (bits & LE_R1_EOP) |
09f75cd7 | 606 | dev->stats.rx_errors++; |
1da177e4 | 607 | } else { |
3b6e8fe7 | 608 | len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4; |
1d266430 | 609 | skb = netdev_alloc_skb(dev, len + 2); |
1da177e4 LT |
610 | |
611 | if (skb == 0) { | |
09f75cd7 | 612 | dev->stats.rx_dropped++; |
3b6e8fe7 MR |
613 | *rds_ptr(rd, mblength, lp->type) = 0; |
614 | *rds_ptr(rd, rmd1, lp->type) = | |
615 | ((lp->rx_buf_ptr_lnc[entry] >> 16) & | |
616 | 0xff) | LE_R1_OWN; | |
617 | lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; | |
1da177e4 LT |
618 | return 0; |
619 | } | |
09f75cd7 | 620 | dev->stats.rx_bytes += len; |
1da177e4 | 621 | |
1da177e4 LT |
622 | skb_reserve(skb, 2); /* 16 byte align */ |
623 | skb_put(skb, len); /* make room */ | |
624 | ||
625 | cp_from_buf(lp->type, skb->data, | |
64699336 | 626 | lp->rx_buf_ptr_cpu[entry], len); |
1da177e4 LT |
627 | |
628 | skb->protocol = eth_type_trans(skb, dev); | |
629 | netif_rx(skb); | |
09f75cd7 | 630 | dev->stats.rx_packets++; |
1da177e4 LT |
631 | } |
632 | ||
633 | /* Return the packet to the pool */ | |
3b6e8fe7 MR |
634 | *rds_ptr(rd, mblength, lp->type) = 0; |
635 | *rds_ptr(rd, length, lp->type) = -RX_BUFF_SIZE | 0xf000; | |
636 | *rds_ptr(rd, rmd1, lp->type) = | |
637 | ((lp->rx_buf_ptr_lnc[entry] >> 16) & 0xff) | LE_R1_OWN; | |
638 | lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; | |
1da177e4 LT |
639 | } |
640 | return 0; | |
641 | } | |
642 | ||
643 | static void lance_tx(struct net_device *dev) | |
644 | { | |
645 | struct lance_private *lp = netdev_priv(dev); | |
3b6e8fe7 | 646 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
1da177e4 | 647 | volatile struct lance_regs *ll = lp->ll; |
3b6e8fe7 | 648 | volatile u16 *td; |
1da177e4 LT |
649 | int i, j; |
650 | int status; | |
3b6e8fe7 | 651 | |
1da177e4 LT |
652 | j = lp->tx_old; |
653 | ||
654 | spin_lock(&lp->lock); | |
655 | ||
656 | for (i = j; i != lp->tx_new; i = j) { | |
3b6e8fe7 | 657 | td = lib_ptr(ib, btx_ring[i], lp->type); |
1da177e4 | 658 | /* If we hit a packet not owned by us, stop */ |
3b6e8fe7 | 659 | if (*tds_ptr(td, tmd1, lp->type) & LE_T1_OWN) |
1da177e4 LT |
660 | break; |
661 | ||
3b6e8fe7 MR |
662 | if (*tds_ptr(td, tmd1, lp->type) & LE_T1_ERR) { |
663 | status = *tds_ptr(td, misc, lp->type); | |
1da177e4 | 664 | |
09f75cd7 | 665 | dev->stats.tx_errors++; |
1da177e4 | 666 | if (status & LE_T3_RTY) |
09f75cd7 | 667 | dev->stats.tx_aborted_errors++; |
1da177e4 | 668 | if (status & LE_T3_LCOL) |
09f75cd7 | 669 | dev->stats.tx_window_errors++; |
1da177e4 LT |
670 | |
671 | if (status & LE_T3_CLOS) { | |
09f75cd7 | 672 | dev->stats.tx_carrier_errors++; |
1da177e4 LT |
673 | printk("%s: Carrier Lost\n", dev->name); |
674 | /* Stop the lance */ | |
675 | writereg(&ll->rap, LE_CSR0); | |
676 | writereg(&ll->rdp, LE_C0_STOP); | |
677 | lance_init_ring(dev); | |
678 | load_csrs(lp); | |
679 | init_restart_lance(lp); | |
680 | goto out; | |
681 | } | |
682 | /* Buffer errors and underflows turn off the | |
683 | * transmitter, restart the adapter. | |
684 | */ | |
685 | if (status & (LE_T3_BUF | LE_T3_UFL)) { | |
09f75cd7 | 686 | dev->stats.tx_fifo_errors++; |
1da177e4 LT |
687 | |
688 | printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", | |
689 | dev->name); | |
690 | /* Stop the lance */ | |
691 | writereg(&ll->rap, LE_CSR0); | |
692 | writereg(&ll->rdp, LE_C0_STOP); | |
693 | lance_init_ring(dev); | |
694 | load_csrs(lp); | |
695 | init_restart_lance(lp); | |
696 | goto out; | |
697 | } | |
3b6e8fe7 MR |
698 | } else if ((*tds_ptr(td, tmd1, lp->type) & LE_T1_POK) == |
699 | LE_T1_POK) { | |
1da177e4 LT |
700 | /* |
701 | * So we don't count the packet more than once. | |
702 | */ | |
3b6e8fe7 | 703 | *tds_ptr(td, tmd1, lp->type) &= ~(LE_T1_POK); |
1da177e4 LT |
704 | |
705 | /* One collision before packet was sent. */ | |
3b6e8fe7 | 706 | if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EONE) |
09f75cd7 | 707 | dev->stats.collisions++; |
1da177e4 LT |
708 | |
709 | /* More than one collision, be optimistic. */ | |
3b6e8fe7 | 710 | if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EMORE) |
09f75cd7 | 711 | dev->stats.collisions += 2; |
1da177e4 | 712 | |
09f75cd7 | 713 | dev->stats.tx_packets++; |
1da177e4 LT |
714 | } |
715 | j = (j + 1) & TX_RING_MOD_MASK; | |
716 | } | |
717 | lp->tx_old = j; | |
718 | out: | |
719 | if (netif_queue_stopped(dev) && | |
720 | TX_BUFFS_AVAIL > 0) | |
721 | netif_wake_queue(dev); | |
722 | ||
723 | spin_unlock(&lp->lock); | |
724 | } | |
725 | ||
28fc1f5a | 726 | static irqreturn_t lance_dma_merr_int(int irq, void *dev_id) |
1da177e4 | 727 | { |
c31f28e7 | 728 | struct net_device *dev = dev_id; |
1da177e4 | 729 | |
28fc1f5a | 730 | printk(KERN_ERR "%s: DMA error\n", dev->name); |
da848ec3 | 731 | return IRQ_HANDLED; |
1da177e4 LT |
732 | } |
733 | ||
28fc1f5a | 734 | static irqreturn_t lance_interrupt(int irq, void *dev_id) |
1da177e4 | 735 | { |
c31f28e7 | 736 | struct net_device *dev = dev_id; |
1da177e4 LT |
737 | struct lance_private *lp = netdev_priv(dev); |
738 | volatile struct lance_regs *ll = lp->ll; | |
739 | int csr0; | |
740 | ||
741 | writereg(&ll->rap, LE_CSR0); | |
742 | csr0 = ll->rdp; | |
743 | ||
744 | /* Acknowledge all the interrupt sources ASAP */ | |
745 | writereg(&ll->rdp, csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT)); | |
746 | ||
747 | if ((csr0 & LE_C0_ERR)) { | |
748 | /* Clear the error condition */ | |
749 | writereg(&ll->rdp, LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | | |
750 | LE_C0_CERR | LE_C0_MERR); | |
751 | } | |
752 | if (csr0 & LE_C0_RINT) | |
753 | lance_rx(dev); | |
754 | ||
755 | if (csr0 & LE_C0_TINT) | |
756 | lance_tx(dev); | |
757 | ||
758 | if (csr0 & LE_C0_BABL) | |
09f75cd7 | 759 | dev->stats.tx_errors++; |
1da177e4 LT |
760 | |
761 | if (csr0 & LE_C0_MISS) | |
09f75cd7 | 762 | dev->stats.rx_errors++; |
1da177e4 LT |
763 | |
764 | if (csr0 & LE_C0_MERR) { | |
765 | printk("%s: Memory error, status %04x\n", dev->name, csr0); | |
766 | ||
767 | writereg(&ll->rdp, LE_C0_STOP); | |
768 | ||
769 | lance_init_ring(dev); | |
770 | load_csrs(lp); | |
771 | init_restart_lance(lp); | |
772 | netif_wake_queue(dev); | |
773 | } | |
774 | ||
775 | writereg(&ll->rdp, LE_C0_INEA); | |
776 | writereg(&ll->rdp, LE_C0_INEA); | |
777 | return IRQ_HANDLED; | |
778 | } | |
779 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
787 | /* Stop the Lance */ |
788 | writereg(&ll->rap, LE_CSR0); | |
789 | writereg(&ll->rdp, LE_C0_STOP); | |
790 | ||
791 | /* Set mode and clear multicast filter only at device open, | |
792 | * so that lance_init_ring() called at any error will not | |
793 | * forget multicast filters. | |
794 | * | |
795 | * BTW it is common bug in all lance drivers! --ANK | |
796 | */ | |
3b6e8fe7 MR |
797 | *lib_ptr(ib, mode, lp->type) = 0; |
798 | *lib_ptr(ib, filter[0], lp->type) = 0; | |
799 | *lib_ptr(ib, filter[1], lp->type) = 0; | |
800 | *lib_ptr(ib, filter[2], lp->type) = 0; | |
801 | *lib_ptr(ib, filter[3], lp->type) = 0; | |
1da177e4 LT |
802 | |
803 | lance_init_ring(dev); | |
804 | load_csrs(lp); | |
805 | ||
806 | netif_start_queue(dev); | |
807 | ||
808 | /* Associate IRQ with lance_interrupt */ | |
a0607fd3 | 809 | if (request_irq(dev->irq, lance_interrupt, 0, "lance", dev)) { |
1da177e4 LT |
810 | printk("%s: Can't get IRQ %d\n", dev->name, dev->irq); |
811 | return -EAGAIN; | |
812 | } | |
813 | if (lp->dma_irq >= 0) { | |
814 | unsigned long flags; | |
815 | ||
0fabe102 | 816 | if (request_irq(lp->dma_irq, lance_dma_merr_int, IRQF_ONESHOT, |
1da177e4 LT |
817 | "lance error", dev)) { |
818 | free_irq(dev->irq, dev); | |
819 | printk("%s: Can't get DMA IRQ %d\n", dev->name, | |
820 | lp->dma_irq); | |
821 | return -EAGAIN; | |
822 | } | |
823 | ||
824 | spin_lock_irqsave(&ioasic_ssr_lock, flags); | |
825 | ||
826 | fast_mb(); | |
827 | /* Enable I/O ASIC LANCE DMA. */ | |
828 | ioasic_write(IO_REG_SSR, | |
829 | ioasic_read(IO_REG_SSR) | IO_SSR_LANCE_DMA_EN); | |
830 | ||
831 | fast_mb(); | |
832 | spin_unlock_irqrestore(&ioasic_ssr_lock, flags); | |
833 | } | |
834 | ||
835 | status = init_restart_lance(lp); | |
836 | return status; | |
837 | } | |
838 | ||
839 | static int lance_close(struct net_device *dev) | |
840 | { | |
841 | struct lance_private *lp = netdev_priv(dev); | |
842 | volatile struct lance_regs *ll = lp->ll; | |
843 | ||
844 | netif_stop_queue(dev); | |
845 | del_timer_sync(&lp->multicast_timer); | |
846 | ||
847 | /* Stop the card */ | |
848 | writereg(&ll->rap, LE_CSR0); | |
849 | writereg(&ll->rdp, LE_C0_STOP); | |
850 | ||
851 | if (lp->dma_irq >= 0) { | |
852 | unsigned long flags; | |
853 | ||
854 | spin_lock_irqsave(&ioasic_ssr_lock, flags); | |
855 | ||
856 | fast_mb(); | |
857 | /* Disable I/O ASIC LANCE DMA. */ | |
858 | ioasic_write(IO_REG_SSR, | |
859 | ioasic_read(IO_REG_SSR) & ~IO_SSR_LANCE_DMA_EN); | |
860 | ||
861 | fast_iob(); | |
862 | spin_unlock_irqrestore(&ioasic_ssr_lock, flags); | |
863 | ||
864 | free_irq(lp->dma_irq, dev); | |
865 | } | |
866 | free_irq(dev->irq, dev); | |
867 | return 0; | |
868 | } | |
869 | ||
870 | static inline int lance_reset(struct net_device *dev) | |
871 | { | |
872 | struct lance_private *lp = netdev_priv(dev); | |
873 | volatile struct lance_regs *ll = lp->ll; | |
874 | int status; | |
875 | ||
876 | /* Stop the lance */ | |
877 | writereg(&ll->rap, LE_CSR0); | |
878 | writereg(&ll->rdp, LE_C0_STOP); | |
879 | ||
880 | lance_init_ring(dev); | |
881 | load_csrs(lp); | |
860e9538 | 882 | netif_trans_update(dev); /* prevent tx timeout */ |
1da177e4 LT |
883 | status = init_restart_lance(lp); |
884 | return status; | |
885 | } | |
886 | ||
887 | static void lance_tx_timeout(struct net_device *dev) | |
888 | { | |
889 | struct lance_private *lp = netdev_priv(dev); | |
890 | volatile struct lance_regs *ll = lp->ll; | |
891 | ||
892 | printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", | |
893 | dev->name, ll->rdp); | |
894 | lance_reset(dev); | |
895 | netif_wake_queue(dev); | |
896 | } | |
897 | ||
fe72352e | 898 | static netdev_tx_t lance_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 LT |
899 | { |
900 | struct lance_private *lp = netdev_priv(dev); | |
901 | volatile struct lance_regs *ll = lp->ll; | |
3b6e8fe7 | 902 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
963267bc | 903 | unsigned long flags; |
3b6e8fe7 | 904 | int entry, len; |
1da177e4 | 905 | |
3b6e8fe7 | 906 | len = skb->len; |
6aa20a22 | 907 | |
1da177e4 | 908 | if (len < ETH_ZLEN) { |
5b057c6b | 909 | if (skb_padto(skb, ETH_ZLEN)) |
6ed10654 | 910 | return NETDEV_TX_OK; |
1da177e4 LT |
911 | len = ETH_ZLEN; |
912 | } | |
913 | ||
09f75cd7 | 914 | dev->stats.tx_bytes += len; |
1da177e4 | 915 | |
963267bc MR |
916 | spin_lock_irqsave(&lp->lock, flags); |
917 | ||
3b6e8fe7 MR |
918 | entry = lp->tx_new; |
919 | *lib_ptr(ib, btx_ring[entry].length, lp->type) = (-len); | |
920 | *lib_ptr(ib, btx_ring[entry].misc, lp->type) = 0; | |
1da177e4 | 921 | |
64699336 | 922 | cp_to_buf(lp->type, lp->tx_buf_ptr_cpu[entry], skb->data, len); |
1da177e4 LT |
923 | |
924 | /* Now, give the packet to the lance */ | |
3b6e8fe7 MR |
925 | *lib_ptr(ib, btx_ring[entry].tmd1, lp->type) = |
926 | ((lp->tx_buf_ptr_lnc[entry] >> 16) & 0xff) | | |
927 | (LE_T1_POK | LE_T1_OWN); | |
928 | lp->tx_new = (entry + 1) & TX_RING_MOD_MASK; | |
1da177e4 LT |
929 | |
930 | if (TX_BUFFS_AVAIL <= 0) | |
931 | netif_stop_queue(dev); | |
932 | ||
933 | /* Kick the lance: transmit now */ | |
934 | writereg(&ll->rdp, LE_C0_INEA | LE_C0_TDMD); | |
935 | ||
963267bc MR |
936 | spin_unlock_irqrestore(&lp->lock, flags); |
937 | ||
1da177e4 LT |
938 | dev_kfree_skb(skb); |
939 | ||
6ed10654 | 940 | return NETDEV_TX_OK; |
1da177e4 LT |
941 | } |
942 | ||
1da177e4 LT |
943 | static void lance_load_multicast(struct net_device *dev) |
944 | { | |
3b6e8fe7 MR |
945 | struct lance_private *lp = netdev_priv(dev); |
946 | volatile u16 *ib = (volatile u16 *)dev->mem_start; | |
22bedad3 | 947 | struct netdev_hw_addr *ha; |
1da177e4 LT |
948 | u32 crc; |
949 | ||
950 | /* set all multicast bits */ | |
951 | if (dev->flags & IFF_ALLMULTI) { | |
3b6e8fe7 MR |
952 | *lib_ptr(ib, filter[0], lp->type) = 0xffff; |
953 | *lib_ptr(ib, filter[1], lp->type) = 0xffff; | |
954 | *lib_ptr(ib, filter[2], lp->type) = 0xffff; | |
955 | *lib_ptr(ib, filter[3], lp->type) = 0xffff; | |
1da177e4 LT |
956 | return; |
957 | } | |
958 | /* clear the multicast filter */ | |
3b6e8fe7 MR |
959 | *lib_ptr(ib, filter[0], lp->type) = 0; |
960 | *lib_ptr(ib, filter[1], lp->type) = 0; | |
961 | *lib_ptr(ib, filter[2], lp->type) = 0; | |
962 | *lib_ptr(ib, filter[3], lp->type) = 0; | |
1da177e4 LT |
963 | |
964 | /* Add addresses */ | |
22bedad3 | 965 | netdev_for_each_mc_addr(ha, dev) { |
498d8e23 | 966 | crc = ether_crc_le(ETH_ALEN, ha->addr); |
1da177e4 | 967 | crc = crc >> 26; |
3b6e8fe7 | 968 | *lib_ptr(ib, filter[crc >> 4], lp->type) |= 1 << (crc & 0xf); |
1da177e4 | 969 | } |
1da177e4 LT |
970 | } |
971 | ||
972 | static void lance_set_multicast(struct net_device *dev) | |
973 | { | |
974 | struct lance_private *lp = netdev_priv(dev); | |
3b6e8fe7 | 975 | volatile u16 *ib = (volatile u16 *)dev->mem_start; |
1da177e4 LT |
976 | volatile struct lance_regs *ll = lp->ll; |
977 | ||
1da177e4 LT |
978 | if (!netif_running(dev)) |
979 | return; | |
980 | ||
981 | if (lp->tx_old != lp->tx_new) { | |
982 | mod_timer(&lp->multicast_timer, jiffies + 4 * HZ/100); | |
983 | netif_wake_queue(dev); | |
984 | return; | |
985 | } | |
986 | ||
987 | netif_stop_queue(dev); | |
988 | ||
989 | writereg(&ll->rap, LE_CSR0); | |
990 | writereg(&ll->rdp, LE_C0_STOP); | |
991 | ||
992 | lance_init_ring(dev); | |
993 | ||
994 | if (dev->flags & IFF_PROMISC) { | |
3b6e8fe7 | 995 | *lib_ptr(ib, mode, lp->type) |= LE_MO_PROM; |
1da177e4 | 996 | } else { |
3b6e8fe7 | 997 | *lib_ptr(ib, mode, lp->type) &= ~LE_MO_PROM; |
1da177e4 LT |
998 | lance_load_multicast(dev); |
999 | } | |
1000 | load_csrs(lp); | |
1001 | init_restart_lance(lp); | |
1002 | netif_wake_queue(dev); | |
1003 | } | |
1004 | ||
c6c52ba1 | 1005 | static void lance_set_multicast_retry(struct timer_list *t) |
1da177e4 | 1006 | { |
c6c52ba1 KC |
1007 | struct lance_private *lp = from_timer(lp, t, multicast_timer); |
1008 | struct net_device *dev = lp->dev; | |
1da177e4 LT |
1009 | |
1010 | lance_set_multicast(dev); | |
1011 | } | |
1012 | ||
ad5a24e0 AB |
1013 | static const struct net_device_ops lance_netdev_ops = { |
1014 | .ndo_open = lance_open, | |
1015 | .ndo_stop = lance_close, | |
1016 | .ndo_start_xmit = lance_start_xmit, | |
1017 | .ndo_tx_timeout = lance_tx_timeout, | |
afc4b13d | 1018 | .ndo_set_rx_mode = lance_set_multicast, |
ad5a24e0 AB |
1019 | .ndo_validate_addr = eth_validate_addr, |
1020 | .ndo_set_mac_address = eth_mac_addr, | |
1021 | }; | |
1022 | ||
0cb0568d | 1023 | static int dec_lance_probe(struct device *bdev, const int type) |
1da177e4 LT |
1024 | { |
1025 | static unsigned version_printed; | |
1026 | static const char fmt[] = "declance%d"; | |
1027 | char name[10]; | |
1028 | struct net_device *dev; | |
1029 | struct lance_private *lp; | |
1030 | volatile struct lance_regs *ll; | |
257b346d | 1031 | resource_size_t start = 0, len = 0; |
1da177e4 LT |
1032 | int i, ret; |
1033 | unsigned long esar_base; | |
1034 | unsigned char *esar; | |
fe3a83af | 1035 | const char *desc; |
1da177e4 | 1036 | |
1da177e4 LT |
1037 | if (dec_lance_debug && version_printed++ == 0) |
1038 | printk(version); | |
1039 | ||
257b346d | 1040 | if (bdev) |
c2313557 | 1041 | snprintf(name, sizeof(name), "%s", dev_name(bdev)); |
257b346d MR |
1042 | else { |
1043 | i = 0; | |
1044 | dev = root_lance_dev; | |
1045 | while (dev) { | |
1046 | i++; | |
4cf1653a | 1047 | lp = netdev_priv(dev); |
257b346d MR |
1048 | dev = lp->next; |
1049 | } | |
1050 | snprintf(name, sizeof(name), fmt, i); | |
1da177e4 | 1051 | } |
1da177e4 LT |
1052 | |
1053 | dev = alloc_etherdev(sizeof(struct lance_private)); | |
1054 | if (!dev) { | |
1da177e4 LT |
1055 | ret = -ENOMEM; |
1056 | goto err_out; | |
1057 | } | |
1058 | ||
1059 | /* | |
1060 | * alloc_etherdev ensures the data structures used by the LANCE | |
1061 | * are aligned. | |
1062 | */ | |
1063 | lp = netdev_priv(dev); | |
1064 | spin_lock_init(&lp->lock); | |
1065 | ||
1066 | lp->type = type; | |
1da177e4 | 1067 | switch (type) { |
1da177e4 | 1068 | case ASIC_LANCE: |
36156cdf | 1069 | dev->base_addr = CKSEG1ADDR(dec_kn_slot_base + IOASIC_LANCE); |
1da177e4 LT |
1070 | |
1071 | /* buffer space for the on-board LANCE shared memory */ | |
1072 | /* | |
1073 | * FIXME: ugly hack! | |
1074 | */ | |
4569504a | 1075 | dev->mem_start = CKSEG1ADDR(0x00020000); |
1da177e4 LT |
1076 | dev->mem_end = dev->mem_start + 0x00020000; |
1077 | dev->irq = dec_interrupt[DEC_IRQ_LANCE]; | |
36156cdf | 1078 | esar_base = CKSEG1ADDR(dec_kn_slot_base + IOASIC_ESAR); |
1da177e4 LT |
1079 | |
1080 | /* Workaround crash with booting KN04 2.1k from Disk */ | |
1081 | memset((void *)dev->mem_start, 0, | |
1082 | dev->mem_end - dev->mem_start); | |
1083 | ||
1084 | /* | |
1085 | * setup the pointer arrays, this sucks [tm] :-( | |
1086 | */ | |
1087 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1088 | lp->rx_buf_ptr_cpu[i] = | |
3b6e8fe7 | 1089 | (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
1da177e4 LT |
1090 | 2 * i * RX_BUFF_SIZE); |
1091 | lp->rx_buf_ptr_lnc[i] = | |
3b6e8fe7 | 1092 | (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
1da177e4 LT |
1093 | } |
1094 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1095 | lp->tx_buf_ptr_cpu[i] = | |
3b6e8fe7 | 1096 | (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
1da177e4 LT |
1097 | 2 * RX_RING_SIZE * RX_BUFF_SIZE + |
1098 | 2 * i * TX_BUFF_SIZE); | |
1099 | lp->tx_buf_ptr_lnc[i] = | |
3b6e8fe7 MR |
1100 | (BUF_OFFSET_LNC + |
1101 | RX_RING_SIZE * RX_BUFF_SIZE + | |
1102 | i * TX_BUFF_SIZE); | |
1da177e4 LT |
1103 | } |
1104 | ||
1105 | /* Setup I/O ASIC LANCE DMA. */ | |
1106 | lp->dma_irq = dec_interrupt[DEC_IRQ_LANCE_MERR]; | |
1107 | ioasic_write(IO_REG_LANCE_DMA_P, | |
6684b4e2 | 1108 | CPHYSADDR(dev->mem_start) << 3); |
1da177e4 LT |
1109 | |
1110 | break; | |
e8f7f7f1 | 1111 | #ifdef CONFIG_TC |
1da177e4 | 1112 | case PMAD_LANCE: |
257b346d MR |
1113 | dev_set_drvdata(bdev, dev); |
1114 | ||
1115 | start = to_tc_dev(bdev)->resource.start; | |
1116 | len = to_tc_dev(bdev)->resource.end - start + 1; | |
c2313557 | 1117 | if (!request_mem_region(start, len, dev_name(bdev))) { |
257b346d MR |
1118 | printk(KERN_ERR |
1119 | "%s: Unable to reserve MMIO resource\n", | |
c2313557 | 1120 | dev_name(bdev)); |
257b346d MR |
1121 | ret = -EBUSY; |
1122 | goto err_out_dev; | |
1123 | } | |
1da177e4 | 1124 | |
257b346d | 1125 | dev->mem_start = CKSEG1ADDR(start); |
3b6e8fe7 | 1126 | dev->mem_end = dev->mem_start + 0x100000; |
1da177e4 | 1127 | dev->base_addr = dev->mem_start + 0x100000; |
257b346d | 1128 | dev->irq = to_tc_dev(bdev)->interrupt; |
1da177e4 LT |
1129 | esar_base = dev->mem_start + 0x1c0002; |
1130 | lp->dma_irq = -1; | |
1131 | ||
1132 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1133 | lp->rx_buf_ptr_cpu[i] = | |
1134 | (char *)(dev->mem_start + BUF_OFFSET_CPU + | |
1135 | i * RX_BUFF_SIZE); | |
1136 | lp->rx_buf_ptr_lnc[i] = | |
3b6e8fe7 | 1137 | (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
1da177e4 LT |
1138 | } |
1139 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1140 | lp->tx_buf_ptr_cpu[i] = | |
1141 | (char *)(dev->mem_start + BUF_OFFSET_CPU + | |
1142 | RX_RING_SIZE * RX_BUFF_SIZE + | |
1143 | i * TX_BUFF_SIZE); | |
1144 | lp->tx_buf_ptr_lnc[i] = | |
3b6e8fe7 MR |
1145 | (BUF_OFFSET_LNC + |
1146 | RX_RING_SIZE * RX_BUFF_SIZE + | |
1147 | i * TX_BUFF_SIZE); | |
1da177e4 LT |
1148 | } |
1149 | ||
1150 | break; | |
1151 | #endif | |
1da177e4 LT |
1152 | case PMAX_LANCE: |
1153 | dev->irq = dec_interrupt[DEC_IRQ_LANCE]; | |
36156cdf RB |
1154 | dev->base_addr = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE); |
1155 | dev->mem_start = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE_MEM); | |
3b6e8fe7 | 1156 | dev->mem_end = dev->mem_start + KN01_SLOT_SIZE; |
36156cdf | 1157 | esar_base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_ESAR + 1); |
1da177e4 LT |
1158 | lp->dma_irq = -1; |
1159 | ||
1160 | /* | |
1161 | * setup the pointer arrays, this sucks [tm] :-( | |
1162 | */ | |
1163 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1164 | lp->rx_buf_ptr_cpu[i] = | |
3b6e8fe7 | 1165 | (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
1da177e4 LT |
1166 | 2 * i * RX_BUFF_SIZE); |
1167 | lp->rx_buf_ptr_lnc[i] = | |
3b6e8fe7 | 1168 | (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
1da177e4 LT |
1169 | } |
1170 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1171 | lp->tx_buf_ptr_cpu[i] = | |
3b6e8fe7 | 1172 | (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
1da177e4 LT |
1173 | 2 * RX_RING_SIZE * RX_BUFF_SIZE + |
1174 | 2 * i * TX_BUFF_SIZE); | |
1175 | lp->tx_buf_ptr_lnc[i] = | |
3b6e8fe7 MR |
1176 | (BUF_OFFSET_LNC + |
1177 | RX_RING_SIZE * RX_BUFF_SIZE + | |
1178 | i * TX_BUFF_SIZE); | |
1da177e4 LT |
1179 | } |
1180 | ||
1181 | break; | |
1182 | ||
1183 | default: | |
1184 | printk(KERN_ERR "%s: declance_init called with unknown type\n", | |
1185 | name); | |
1186 | ret = -ENODEV; | |
257b346d | 1187 | goto err_out_dev; |
1da177e4 LT |
1188 | } |
1189 | ||
1190 | ll = (struct lance_regs *) dev->base_addr; | |
1191 | esar = (unsigned char *) esar_base; | |
1192 | ||
1193 | /* prom checks */ | |
1194 | /* First, check for test pattern */ | |
1195 | if (esar[0x60] != 0xff && esar[0x64] != 0x00 && | |
1196 | esar[0x68] != 0x55 && esar[0x6c] != 0xaa) { | |
1197 | printk(KERN_ERR | |
1198 | "%s: Ethernet station address prom not found!\n", | |
1199 | name); | |
1200 | ret = -ENODEV; | |
257b346d | 1201 | goto err_out_resource; |
1da177e4 LT |
1202 | } |
1203 | /* Check the prom contents */ | |
1204 | for (i = 0; i < 8; i++) { | |
1205 | if (esar[i * 4] != esar[0x3c - i * 4] && | |
1206 | esar[i * 4] != esar[0x40 + i * 4] && | |
1207 | esar[0x3c - i * 4] != esar[0x40 + i * 4]) { | |
1208 | printk(KERN_ERR "%s: Something is wrong with the " | |
1209 | "ethernet station address prom!\n", name); | |
1210 | ret = -ENODEV; | |
257b346d | 1211 | goto err_out_resource; |
1da177e4 LT |
1212 | } |
1213 | } | |
1214 | ||
1215 | /* Copy the ethernet address to the device structure, later to the | |
1216 | * lance initialization block so the lance gets it every time it's | |
1217 | * (re)initialized. | |
1218 | */ | |
1219 | switch (type) { | |
1220 | case ASIC_LANCE: | |
fe3a83af | 1221 | desc = "IOASIC onboard LANCE"; |
1da177e4 LT |
1222 | break; |
1223 | case PMAD_LANCE: | |
fe3a83af | 1224 | desc = "PMAD-AA"; |
1da177e4 LT |
1225 | break; |
1226 | case PMAX_LANCE: | |
fe3a83af | 1227 | desc = "PMAX onboard LANCE"; |
1da177e4 LT |
1228 | break; |
1229 | } | |
0795af57 | 1230 | for (i = 0; i < 6; i++) |
1da177e4 | 1231 | dev->dev_addr[i] = esar[i * 4]; |
1da177e4 | 1232 | |
fe3a83af MR |
1233 | printk("%s: %s, addr = %pM, irq = %d\n", |
1234 | name, desc, dev->dev_addr, dev->irq); | |
1da177e4 | 1235 | |
ad5a24e0 | 1236 | dev->netdev_ops = &lance_netdev_ops; |
1da177e4 | 1237 | dev->watchdog_timeo = 5*HZ; |
1da177e4 LT |
1238 | |
1239 | /* lp->ll is the location of the registers for lance card */ | |
1240 | lp->ll = ll; | |
1241 | ||
1242 | /* busmaster_regval (CSR3) should be zero according to the PMAD-AA | |
1243 | * specification. | |
1244 | */ | |
1245 | lp->busmaster_regval = 0; | |
1246 | ||
1247 | dev->dma = 0; | |
1248 | ||
1249 | /* We cannot sleep if the chip is busy during a | |
1250 | * multicast list update event, because such events | |
1251 | * can occur from interrupts (ex. IPv6). So we | |
1252 | * use a timer to try again later when necessary. -DaveM | |
1253 | */ | |
c6c52ba1 KC |
1254 | lp->dev = dev; |
1255 | timer_setup(&lp->multicast_timer, lance_set_multicast_retry, 0); | |
b0b404bd | 1256 | |
1da177e4 LT |
1257 | |
1258 | ret = register_netdev(dev); | |
1259 | if (ret) { | |
1260 | printk(KERN_ERR | |
1261 | "%s: Unable to register netdev, aborting.\n", name); | |
257b346d | 1262 | goto err_out_resource; |
1da177e4 LT |
1263 | } |
1264 | ||
257b346d MR |
1265 | if (!bdev) { |
1266 | lp->next = root_lance_dev; | |
1267 | root_lance_dev = dev; | |
1268 | } | |
1da177e4 LT |
1269 | |
1270 | printk("%s: registered as %s.\n", name, dev->name); | |
1271 | return 0; | |
1272 | ||
257b346d MR |
1273 | err_out_resource: |
1274 | if (bdev) | |
1275 | release_mem_region(start, len); | |
1276 | ||
1277 | err_out_dev: | |
b07db75a | 1278 | free_netdev(dev); |
1da177e4 LT |
1279 | |
1280 | err_out: | |
1281 | return ret; | |
1282 | } | |
1283 | ||
1da177e4 | 1284 | /* Find all the lance cards on the system and initialize them */ |
257b346d | 1285 | static int __init dec_lance_platform_probe(void) |
1da177e4 LT |
1286 | { |
1287 | int count = 0; | |
1288 | ||
1da177e4 LT |
1289 | if (dec_interrupt[DEC_IRQ_LANCE] >= 0) { |
1290 | if (dec_interrupt[DEC_IRQ_LANCE_MERR] >= 0) { | |
257b346d | 1291 | if (dec_lance_probe(NULL, ASIC_LANCE) >= 0) |
1da177e4 | 1292 | count++; |
1da177e4 | 1293 | } else if (!TURBOCHANNEL) { |
257b346d | 1294 | if (dec_lance_probe(NULL, PMAX_LANCE) >= 0) |
1da177e4 LT |
1295 | count++; |
1296 | } | |
1297 | } | |
1298 | ||
1299 | return (count > 0) ? 0 : -ENODEV; | |
1300 | } | |
1301 | ||
257b346d | 1302 | static void __exit dec_lance_platform_remove(void) |
1da177e4 LT |
1303 | { |
1304 | while (root_lance_dev) { | |
1305 | struct net_device *dev = root_lance_dev; | |
1306 | struct lance_private *lp = netdev_priv(dev); | |
b07db75a | 1307 | |
1da177e4 | 1308 | unregister_netdev(dev); |
1da177e4 LT |
1309 | root_lance_dev = lp->next; |
1310 | free_netdev(dev); | |
1311 | } | |
1312 | } | |
1313 | ||
257b346d | 1314 | #ifdef CONFIG_TC |
0cb0568d | 1315 | static int dec_lance_tc_probe(struct device *dev); |
be12502e | 1316 | static int dec_lance_tc_remove(struct device *dev); |
257b346d MR |
1317 | |
1318 | static const struct tc_device_id dec_lance_tc_table[] = { | |
1319 | { "DEC ", "PMAD-AA " }, | |
1320 | { } | |
1321 | }; | |
1322 | MODULE_DEVICE_TABLE(tc, dec_lance_tc_table); | |
1323 | ||
1324 | static struct tc_driver dec_lance_tc_driver = { | |
1325 | .id_table = dec_lance_tc_table, | |
1326 | .driver = { | |
1327 | .name = "declance", | |
1328 | .bus = &tc_bus_type, | |
1329 | .probe = dec_lance_tc_probe, | |
be12502e | 1330 | .remove = dec_lance_tc_remove, |
257b346d MR |
1331 | }, |
1332 | }; | |
1333 | ||
0cb0568d | 1334 | static int dec_lance_tc_probe(struct device *dev) |
257b346d MR |
1335 | { |
1336 | int status = dec_lance_probe(dev, PMAD_LANCE); | |
1337 | if (!status) | |
1338 | get_device(dev); | |
1339 | return status; | |
1340 | } | |
1341 | ||
be12502e DT |
1342 | static void dec_lance_remove(struct device *bdev) |
1343 | { | |
1344 | struct net_device *dev = dev_get_drvdata(bdev); | |
1345 | resource_size_t start, len; | |
1346 | ||
1347 | unregister_netdev(dev); | |
1348 | start = to_tc_dev(bdev)->resource.start; | |
1349 | len = to_tc_dev(bdev)->resource.end - start + 1; | |
1350 | release_mem_region(start, len); | |
1351 | free_netdev(dev); | |
1352 | } | |
1353 | ||
1354 | static int dec_lance_tc_remove(struct device *dev) | |
257b346d MR |
1355 | { |
1356 | put_device(dev); | |
1357 | dec_lance_remove(dev); | |
1358 | return 0; | |
1359 | } | |
1360 | #endif | |
1361 | ||
1362 | static int __init dec_lance_init(void) | |
1363 | { | |
1364 | int status; | |
1365 | ||
1366 | status = tc_register_driver(&dec_lance_tc_driver); | |
1367 | if (!status) | |
1368 | dec_lance_platform_probe(); | |
1369 | return status; | |
1370 | } | |
1371 | ||
1372 | static void __exit dec_lance_exit(void) | |
1373 | { | |
1374 | dec_lance_platform_remove(); | |
1375 | tc_unregister_driver(&dec_lance_tc_driver); | |
1376 | } | |
1377 | ||
1378 | ||
1379 | module_init(dec_lance_init); | |
1380 | module_exit(dec_lance_exit); |