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1da177e4 LT |
1 | /* ---------------------------------------------------------------------------- |
2 | Linux PCMCIA ethernet adapter driver for the New Media Ethernet LAN. | |
3 | nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao | |
4 | ||
5 | The Ethernet LAN uses the Advanced Micro Devices (AMD) Am79C940 Media | |
6 | Access Controller for Ethernet (MACE). It is essentially the Am2150 | |
7 | PCMCIA Ethernet card contained in the Am2150 Demo Kit. | |
8 | ||
9 | Written by Roger C. Pao <rpao@paonet.org> | |
10 | Copyright 1995 Roger C. Pao | |
11 | Linux 2.5 cleanups Copyright Red Hat 2003 | |
12 | ||
13 | This software may be used and distributed according to the terms of | |
14 | the GNU General Public License. | |
15 | ||
16 | Ported to Linux 1.3.* network driver environment by | |
17 | Matti Aarnio <mea@utu.fi> | |
18 | ||
19 | References | |
20 | ||
21 | Am2150 Technical Reference Manual, Revision 1.0, August 17, 1993 | |
22 | Am79C940 (MACE) Data Sheet, 1994 | |
23 | Am79C90 (C-LANCE) Data Sheet, 1994 | |
24 | Linux PCMCIA Programmer's Guide v1.17 | |
25 | /usr/src/linux/net/inet/dev.c, Linux kernel 1.2.8 | |
26 | ||
27 | Eric Mears, New Media Corporation | |
28 | Tom Pollard, New Media Corporation | |
29 | Dean Siasoyco, New Media Corporation | |
30 | Ken Lesniak, Silicon Graphics, Inc. <lesniak@boston.sgi.com> | |
31 | Donald Becker <becker@scyld.com> | |
32 | David Hinds <dahinds@users.sourceforge.net> | |
33 | ||
34 | The Linux client driver is based on the 3c589_cs.c client driver by | |
35 | David Hinds. | |
36 | ||
37 | The Linux network driver outline is based on the 3c589_cs.c driver, | |
38 | the 8390.c driver, and the example skeleton.c kernel code, which are | |
39 | by Donald Becker. | |
40 | ||
41 | The Am2150 network driver hardware interface code is based on the | |
42 | OS/9000 driver for the New Media Ethernet LAN by Eric Mears. | |
43 | ||
44 | Special thanks for testing and help in debugging this driver goes | |
45 | to Ken Lesniak. | |
46 | ||
47 | ------------------------------------------------------------------------------- | |
48 | Driver Notes and Issues | |
49 | ------------------------------------------------------------------------------- | |
50 | ||
51 | 1. Developed on a Dell 320SLi | |
52 | PCMCIA Card Services 2.6.2 | |
53 | Linux dell 1.2.10 #1 Thu Jun 29 20:23:41 PDT 1995 i386 | |
54 | ||
55 | 2. rc.pcmcia may require loading pcmcia_core with io_speed=300: | |
56 | 'insmod pcmcia_core.o io_speed=300'. | |
57 | This will avoid problems with fast systems which causes rx_framecnt | |
58 | to return random values. | |
59 | ||
60 | 3. If hot extraction does not work for you, use 'ifconfig eth0 down' | |
61 | before extraction. | |
62 | ||
63 | 4. There is a bad slow-down problem in this driver. | |
64 | ||
65 | 5. Future: Multicast processing. In the meantime, do _not_ compile your | |
66 | kernel with multicast ip enabled. | |
67 | ||
68 | ------------------------------------------------------------------------------- | |
69 | History | |
70 | ------------------------------------------------------------------------------- | |
71 | Log: nmclan_cs.c,v | |
72 | * 2.5.75-ac1 2003/07/11 Alan Cox <alan@redhat.com> | |
73 | * Fixed hang on card eject as we probe it | |
74 | * Cleaned up to use new style locking. | |
75 | * | |
76 | * Revision 0.16 1995/07/01 06:42:17 rpao | |
77 | * Bug fix: nmclan_reset() called CardServices incorrectly. | |
78 | * | |
79 | * Revision 0.15 1995/05/24 08:09:47 rpao | |
80 | * Re-implement MULTI_TX dev->tbusy handling. | |
81 | * | |
82 | * Revision 0.14 1995/05/23 03:19:30 rpao | |
83 | * Added, in nmclan_config(), "tuple.Attributes = 0;". | |
84 | * Modified MACE ID check to ignore chip revision level. | |
85 | * Avoid tx_free_frames race condition between _start_xmit and _interrupt. | |
86 | * | |
87 | * Revision 0.13 1995/05/18 05:56:34 rpao | |
88 | * Statistics changes. | |
89 | * Bug fix: nmclan_reset did not enable TX and RX: call restore_multicast_list. | |
90 | * Bug fix: mace_interrupt checks ~MACE_IMR_DEFAULT. Fixes driver lockup. | |
91 | * | |
92 | * Revision 0.12 1995/05/14 00:12:23 rpao | |
93 | * Statistics overhaul. | |
94 | * | |
95 | ||
96 | 95/05/13 rpao V0.10a | |
97 | Bug fix: MACE statistics counters used wrong I/O ports. | |
98 | Bug fix: mace_interrupt() needed to allow statistics to be | |
99 | processed without RX or TX interrupts pending. | |
100 | 95/05/11 rpao V0.10 | |
101 | Multiple transmit request processing. | |
102 | Modified statistics to use MACE counters where possible. | |
103 | 95/05/10 rpao V0.09 Bug fix: Must use IO_DATA_PATH_WIDTH_AUTO. | |
104 | *Released | |
105 | 95/05/10 rpao V0.08 | |
106 | Bug fix: Make all non-exported functions private by using | |
107 | static keyword. | |
108 | Bug fix: Test IntrCnt _before_ reading MACE_IR. | |
109 | 95/05/10 rpao V0.07 Statistics. | |
110 | 95/05/09 rpao V0.06 Fix rx_framecnt problem by addition of PCIC wait states. | |
111 | ||
112 | ---------------------------------------------------------------------------- */ | |
113 | ||
114 | #define DRV_NAME "nmclan_cs" | |
115 | #define DRV_VERSION "0.16" | |
116 | ||
117 | ||
118 | /* ---------------------------------------------------------------------------- | |
119 | Conditional Compilation Options | |
120 | ---------------------------------------------------------------------------- */ | |
121 | ||
122 | #define MULTI_TX 0 | |
123 | #define RESET_ON_TIMEOUT 1 | |
124 | #define TX_INTERRUPTABLE 1 | |
125 | #define RESET_XILINX 0 | |
126 | ||
127 | /* ---------------------------------------------------------------------------- | |
128 | Include Files | |
129 | ---------------------------------------------------------------------------- */ | |
130 | ||
131 | #include <linux/module.h> | |
132 | #include <linux/kernel.h> | |
133 | #include <linux/init.h> | |
134 | #include <linux/ptrace.h> | |
135 | #include <linux/slab.h> | |
136 | #include <linux/string.h> | |
137 | #include <linux/timer.h> | |
138 | #include <linux/interrupt.h> | |
139 | #include <linux/in.h> | |
140 | #include <linux/delay.h> | |
141 | #include <linux/ethtool.h> | |
142 | #include <linux/netdevice.h> | |
143 | #include <linux/etherdevice.h> | |
144 | #include <linux/skbuff.h> | |
145 | #include <linux/if_arp.h> | |
146 | #include <linux/ioport.h> | |
147 | #include <linux/bitops.h> | |
148 | ||
1da177e4 LT |
149 | #include <pcmcia/cs_types.h> |
150 | #include <pcmcia/cs.h> | |
151 | #include <pcmcia/cisreg.h> | |
152 | #include <pcmcia/cistpl.h> | |
153 | #include <pcmcia/ds.h> | |
154 | ||
155 | #include <asm/uaccess.h> | |
156 | #include <asm/io.h> | |
157 | #include <asm/system.h> | |
158 | ||
159 | /* ---------------------------------------------------------------------------- | |
160 | Defines | |
161 | ---------------------------------------------------------------------------- */ | |
162 | ||
163 | #define ETHER_ADDR_LEN ETH_ALEN | |
164 | /* 6 bytes in an Ethernet Address */ | |
165 | #define MACE_LADRF_LEN 8 | |
166 | /* 8 bytes in Logical Address Filter */ | |
167 | ||
168 | /* Loop Control Defines */ | |
169 | #define MACE_MAX_IR_ITERATIONS 10 | |
170 | #define MACE_MAX_RX_ITERATIONS 12 | |
171 | /* | |
172 | TBD: Dean brought this up, and I assumed the hardware would | |
173 | handle it: | |
174 | ||
175 | If MACE_MAX_RX_ITERATIONS is > 1, rx_framecnt may still be | |
176 | non-zero when the isr exits. We may not get another interrupt | |
177 | to process the remaining packets for some time. | |
178 | */ | |
179 | ||
180 | /* | |
181 | The Am2150 has a Xilinx XC3042 field programmable gate array (FPGA) | |
182 | which manages the interface between the MACE and the PCMCIA bus. It | |
183 | also includes buffer management for the 32K x 8 SRAM to control up to | |
184 | four transmit and 12 receive frames at a time. | |
185 | */ | |
186 | #define AM2150_MAX_TX_FRAMES 4 | |
187 | #define AM2150_MAX_RX_FRAMES 12 | |
188 | ||
189 | /* Am2150 Ethernet Card I/O Mapping */ | |
190 | #define AM2150_RCV 0x00 | |
191 | #define AM2150_XMT 0x04 | |
192 | #define AM2150_XMT_SKIP 0x09 | |
193 | #define AM2150_RCV_NEXT 0x0A | |
194 | #define AM2150_RCV_FRAME_COUNT 0x0B | |
195 | #define AM2150_MACE_BANK 0x0C | |
196 | #define AM2150_MACE_BASE 0x10 | |
197 | ||
198 | /* MACE Registers */ | |
199 | #define MACE_RCVFIFO 0 | |
200 | #define MACE_XMTFIFO 1 | |
201 | #define MACE_XMTFC 2 | |
202 | #define MACE_XMTFS 3 | |
203 | #define MACE_XMTRC 4 | |
204 | #define MACE_RCVFC 5 | |
205 | #define MACE_RCVFS 6 | |
206 | #define MACE_FIFOFC 7 | |
207 | #define MACE_IR 8 | |
208 | #define MACE_IMR 9 | |
209 | #define MACE_PR 10 | |
210 | #define MACE_BIUCC 11 | |
211 | #define MACE_FIFOCC 12 | |
212 | #define MACE_MACCC 13 | |
213 | #define MACE_PLSCC 14 | |
214 | #define MACE_PHYCC 15 | |
215 | #define MACE_CHIPIDL 16 | |
216 | #define MACE_CHIPIDH 17 | |
217 | #define MACE_IAC 18 | |
218 | /* Reserved */ | |
219 | #define MACE_LADRF 20 | |
220 | #define MACE_PADR 21 | |
221 | /* Reserved */ | |
222 | /* Reserved */ | |
223 | #define MACE_MPC 24 | |
224 | /* Reserved */ | |
225 | #define MACE_RNTPC 26 | |
226 | #define MACE_RCVCC 27 | |
227 | /* Reserved */ | |
228 | #define MACE_UTR 29 | |
229 | #define MACE_RTR1 30 | |
230 | #define MACE_RTR2 31 | |
231 | ||
232 | /* MACE Bit Masks */ | |
233 | #define MACE_XMTRC_EXDEF 0x80 | |
234 | #define MACE_XMTRC_XMTRC 0x0F | |
235 | ||
236 | #define MACE_XMTFS_XMTSV 0x80 | |
237 | #define MACE_XMTFS_UFLO 0x40 | |
238 | #define MACE_XMTFS_LCOL 0x20 | |
239 | #define MACE_XMTFS_MORE 0x10 | |
240 | #define MACE_XMTFS_ONE 0x08 | |
241 | #define MACE_XMTFS_DEFER 0x04 | |
242 | #define MACE_XMTFS_LCAR 0x02 | |
243 | #define MACE_XMTFS_RTRY 0x01 | |
244 | ||
245 | #define MACE_RCVFS_RCVSTS 0xF000 | |
246 | #define MACE_RCVFS_OFLO 0x8000 | |
247 | #define MACE_RCVFS_CLSN 0x4000 | |
248 | #define MACE_RCVFS_FRAM 0x2000 | |
249 | #define MACE_RCVFS_FCS 0x1000 | |
250 | ||
251 | #define MACE_FIFOFC_RCVFC 0xF0 | |
252 | #define MACE_FIFOFC_XMTFC 0x0F | |
253 | ||
254 | #define MACE_IR_JAB 0x80 | |
255 | #define MACE_IR_BABL 0x40 | |
256 | #define MACE_IR_CERR 0x20 | |
257 | #define MACE_IR_RCVCCO 0x10 | |
258 | #define MACE_IR_RNTPCO 0x08 | |
259 | #define MACE_IR_MPCO 0x04 | |
260 | #define MACE_IR_RCVINT 0x02 | |
261 | #define MACE_IR_XMTINT 0x01 | |
262 | ||
263 | #define MACE_MACCC_PROM 0x80 | |
264 | #define MACE_MACCC_DXMT2PD 0x40 | |
265 | #define MACE_MACCC_EMBA 0x20 | |
266 | #define MACE_MACCC_RESERVED 0x10 | |
267 | #define MACE_MACCC_DRCVPA 0x08 | |
268 | #define MACE_MACCC_DRCVBC 0x04 | |
269 | #define MACE_MACCC_ENXMT 0x02 | |
270 | #define MACE_MACCC_ENRCV 0x01 | |
271 | ||
272 | #define MACE_PHYCC_LNKFL 0x80 | |
273 | #define MACE_PHYCC_DLNKTST 0x40 | |
274 | #define MACE_PHYCC_REVPOL 0x20 | |
275 | #define MACE_PHYCC_DAPC 0x10 | |
276 | #define MACE_PHYCC_LRT 0x08 | |
277 | #define MACE_PHYCC_ASEL 0x04 | |
278 | #define MACE_PHYCC_RWAKE 0x02 | |
279 | #define MACE_PHYCC_AWAKE 0x01 | |
280 | ||
281 | #define MACE_IAC_ADDRCHG 0x80 | |
282 | #define MACE_IAC_PHYADDR 0x04 | |
283 | #define MACE_IAC_LOGADDR 0x02 | |
284 | ||
285 | #define MACE_UTR_RTRE 0x80 | |
286 | #define MACE_UTR_RTRD 0x40 | |
287 | #define MACE_UTR_RPA 0x20 | |
288 | #define MACE_UTR_FCOLL 0x10 | |
289 | #define MACE_UTR_RCVFCSE 0x08 | |
290 | #define MACE_UTR_LOOP_INCL_MENDEC 0x06 | |
291 | #define MACE_UTR_LOOP_NO_MENDEC 0x04 | |
292 | #define MACE_UTR_LOOP_EXTERNAL 0x02 | |
293 | #define MACE_UTR_LOOP_NONE 0x00 | |
294 | #define MACE_UTR_RESERVED 0x01 | |
295 | ||
296 | /* Switch MACE register bank (only 0 and 1 are valid) */ | |
297 | #define MACEBANK(win_num) outb((win_num), ioaddr + AM2150_MACE_BANK) | |
298 | ||
299 | #define MACE_IMR_DEFAULT \ | |
300 | (0xFF - \ | |
301 | ( \ | |
302 | MACE_IR_CERR | \ | |
303 | MACE_IR_RCVCCO | \ | |
304 | MACE_IR_RNTPCO | \ | |
305 | MACE_IR_MPCO | \ | |
306 | MACE_IR_RCVINT | \ | |
307 | MACE_IR_XMTINT \ | |
308 | ) \ | |
309 | ) | |
310 | #undef MACE_IMR_DEFAULT | |
311 | #define MACE_IMR_DEFAULT 0x00 /* New statistics handling: grab everything */ | |
312 | ||
313 | #define TX_TIMEOUT ((400*HZ)/1000) | |
314 | ||
315 | /* ---------------------------------------------------------------------------- | |
316 | Type Definitions | |
317 | ---------------------------------------------------------------------------- */ | |
318 | ||
319 | typedef struct _mace_statistics { | |
320 | /* MACE_XMTFS */ | |
321 | int xmtsv; | |
322 | int uflo; | |
323 | int lcol; | |
324 | int more; | |
325 | int one; | |
326 | int defer; | |
327 | int lcar; | |
328 | int rtry; | |
329 | ||
330 | /* MACE_XMTRC */ | |
331 | int exdef; | |
332 | int xmtrc; | |
333 | ||
334 | /* RFS1--Receive Status (RCVSTS) */ | |
335 | int oflo; | |
336 | int clsn; | |
337 | int fram; | |
338 | int fcs; | |
339 | ||
340 | /* RFS2--Runt Packet Count (RNTPC) */ | |
341 | int rfs_rntpc; | |
342 | ||
343 | /* RFS3--Receive Collision Count (RCVCC) */ | |
344 | int rfs_rcvcc; | |
345 | ||
346 | /* MACE_IR */ | |
347 | int jab; | |
348 | int babl; | |
349 | int cerr; | |
350 | int rcvcco; | |
351 | int rntpco; | |
352 | int mpco; | |
353 | ||
354 | /* MACE_MPC */ | |
355 | int mpc; | |
356 | ||
357 | /* MACE_RNTPC */ | |
358 | int rntpc; | |
359 | ||
360 | /* MACE_RCVCC */ | |
361 | int rcvcc; | |
362 | } mace_statistics; | |
363 | ||
364 | typedef struct _mace_private { | |
365 | dev_link_t link; | |
366 | dev_node_t node; | |
367 | struct net_device_stats linux_stats; /* Linux statistics counters */ | |
368 | mace_statistics mace_stats; /* MACE chip statistics counters */ | |
369 | ||
370 | /* restore_multicast_list() state variables */ | |
371 | int multicast_ladrf[MACE_LADRF_LEN]; /* Logical address filter */ | |
372 | int multicast_num_addrs; | |
373 | ||
374 | char tx_free_frames; /* Number of free transmit frame buffers */ | |
375 | char tx_irq_disabled; /* MACE TX interrupt disabled */ | |
376 | ||
377 | spinlock_t bank_lock; /* Must be held if you step off bank 0 */ | |
378 | } mace_private; | |
379 | ||
380 | /* ---------------------------------------------------------------------------- | |
381 | Private Global Variables | |
382 | ---------------------------------------------------------------------------- */ | |
383 | ||
384 | #ifdef PCMCIA_DEBUG | |
385 | static char rcsid[] = | |
386 | "nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao"; | |
387 | static char *version = | |
388 | DRV_NAME " " DRV_VERSION " (Roger C. Pao)"; | |
389 | #endif | |
390 | ||
391 | static dev_info_t dev_info="nmclan_cs"; | |
392 | static dev_link_t *dev_list; | |
393 | ||
394 | static char *if_names[]={ | |
395 | "Auto", "10baseT", "BNC", | |
396 | }; | |
397 | ||
398 | /* ---------------------------------------------------------------------------- | |
399 | Parameters | |
400 | These are the parameters that can be set during loading with | |
401 | 'insmod'. | |
402 | ---------------------------------------------------------------------------- */ | |
403 | ||
404 | MODULE_DESCRIPTION("New Media PCMCIA ethernet driver"); | |
405 | MODULE_LICENSE("GPL"); | |
406 | ||
407 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
408 | ||
409 | /* 0=auto, 1=10baseT, 2 = 10base2, default=auto */ | |
410 | INT_MODULE_PARM(if_port, 0); | |
411 | ||
412 | #ifdef PCMCIA_DEBUG | |
413 | INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); | |
414 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
415 | #else | |
416 | #define DEBUG(n, args...) | |
417 | #endif | |
418 | ||
419 | /* ---------------------------------------------------------------------------- | |
420 | Function Prototypes | |
421 | ---------------------------------------------------------------------------- */ | |
422 | ||
423 | static void nmclan_config(dev_link_t *link); | |
424 | static void nmclan_release(dev_link_t *link); | |
425 | static int nmclan_event(event_t event, int priority, | |
426 | event_callback_args_t *args); | |
427 | ||
428 | static void nmclan_reset(struct net_device *dev); | |
429 | static int mace_config(struct net_device *dev, struct ifmap *map); | |
430 | static int mace_open(struct net_device *dev); | |
431 | static int mace_close(struct net_device *dev); | |
432 | static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
433 | static void mace_tx_timeout(struct net_device *dev); | |
434 | static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
435 | static struct net_device_stats *mace_get_stats(struct net_device *dev); | |
436 | static int mace_rx(struct net_device *dev, unsigned char RxCnt); | |
437 | static void restore_multicast_list(struct net_device *dev); | |
438 | static void set_multicast_list(struct net_device *dev); | |
439 | static struct ethtool_ops netdev_ethtool_ops; | |
440 | ||
441 | ||
442 | static dev_link_t *nmclan_attach(void); | |
443 | static void nmclan_detach(dev_link_t *); | |
444 | ||
445 | /* ---------------------------------------------------------------------------- | |
446 | nmclan_attach | |
447 | Creates an "instance" of the driver, allocating local data | |
448 | structures for one device. The device is registered with Card | |
449 | Services. | |
450 | ---------------------------------------------------------------------------- */ | |
451 | ||
452 | static dev_link_t *nmclan_attach(void) | |
453 | { | |
454 | mace_private *lp; | |
455 | dev_link_t *link; | |
456 | struct net_device *dev; | |
457 | client_reg_t client_reg; | |
458 | int ret; | |
459 | ||
460 | DEBUG(0, "nmclan_attach()\n"); | |
461 | DEBUG(1, "%s\n", rcsid); | |
462 | ||
463 | /* Create new ethernet device */ | |
464 | dev = alloc_etherdev(sizeof(mace_private)); | |
465 | if (!dev) | |
466 | return NULL; | |
467 | lp = netdev_priv(dev); | |
468 | link = &lp->link; | |
469 | link->priv = dev; | |
470 | ||
471 | spin_lock_init(&lp->bank_lock); | |
472 | link->io.NumPorts1 = 32; | |
473 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; | |
474 | link->io.IOAddrLines = 5; | |
475 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; | |
476 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
477 | link->irq.Handler = &mace_interrupt; | |
478 | link->irq.Instance = dev; | |
479 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
480 | link->conf.Vcc = 50; | |
481 | link->conf.IntType = INT_MEMORY_AND_IO; | |
482 | link->conf.ConfigIndex = 1; | |
483 | link->conf.Present = PRESENT_OPTION; | |
484 | ||
485 | lp->tx_free_frames=AM2150_MAX_TX_FRAMES; | |
486 | ||
487 | SET_MODULE_OWNER(dev); | |
488 | dev->hard_start_xmit = &mace_start_xmit; | |
489 | dev->set_config = &mace_config; | |
490 | dev->get_stats = &mace_get_stats; | |
491 | dev->set_multicast_list = &set_multicast_list; | |
492 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); | |
493 | dev->open = &mace_open; | |
494 | dev->stop = &mace_close; | |
495 | #ifdef HAVE_TX_TIMEOUT | |
496 | dev->tx_timeout = mace_tx_timeout; | |
497 | dev->watchdog_timeo = TX_TIMEOUT; | |
498 | #endif | |
499 | ||
500 | /* Register with Card Services */ | |
501 | link->next = dev_list; | |
502 | dev_list = link; | |
503 | client_reg.dev_info = &dev_info; | |
1da177e4 LT |
504 | client_reg.Version = 0x0210; |
505 | client_reg.event_callback_args.client_data = link; | |
506 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
507 | if (ret != 0) { | |
508 | cs_error(link->handle, RegisterClient, ret); | |
509 | nmclan_detach(link); | |
510 | return NULL; | |
511 | } | |
512 | ||
513 | return link; | |
514 | } /* nmclan_attach */ | |
515 | ||
516 | /* ---------------------------------------------------------------------------- | |
517 | nmclan_detach | |
518 | This deletes a driver "instance". The device is de-registered | |
519 | with Card Services. If it has been released, all local data | |
520 | structures are freed. Otherwise, the structures will be freed | |
521 | when the device is released. | |
522 | ---------------------------------------------------------------------------- */ | |
523 | ||
524 | static void nmclan_detach(dev_link_t *link) | |
525 | { | |
526 | struct net_device *dev = link->priv; | |
527 | dev_link_t **linkp; | |
528 | ||
529 | DEBUG(0, "nmclan_detach(0x%p)\n", link); | |
530 | ||
531 | /* Locate device structure */ | |
532 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
533 | if (*linkp == link) break; | |
534 | if (*linkp == NULL) | |
535 | return; | |
536 | ||
537 | if (link->dev) | |
538 | unregister_netdev(dev); | |
539 | ||
540 | if (link->state & DEV_CONFIG) | |
541 | nmclan_release(link); | |
542 | ||
543 | if (link->handle) | |
544 | pcmcia_deregister_client(link->handle); | |
545 | ||
546 | /* Unlink device structure, free bits */ | |
547 | *linkp = link->next; | |
548 | free_netdev(dev); | |
549 | } /* nmclan_detach */ | |
550 | ||
551 | /* ---------------------------------------------------------------------------- | |
552 | mace_read | |
553 | Reads a MACE register. This is bank independent; however, the | |
554 | caller must ensure that this call is not interruptable. We are | |
555 | assuming that during normal operation, the MACE is always in | |
556 | bank 0. | |
557 | ---------------------------------------------------------------------------- */ | |
558 | static int mace_read(mace_private *lp, kio_addr_t ioaddr, int reg) | |
559 | { | |
560 | int data = 0xFF; | |
561 | unsigned long flags; | |
562 | ||
563 | switch (reg >> 4) { | |
564 | case 0: /* register 0-15 */ | |
565 | data = inb(ioaddr + AM2150_MACE_BASE + reg); | |
566 | break; | |
567 | case 1: /* register 16-31 */ | |
568 | spin_lock_irqsave(&lp->bank_lock, flags); | |
569 | MACEBANK(1); | |
570 | data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F)); | |
571 | MACEBANK(0); | |
572 | spin_unlock_irqrestore(&lp->bank_lock, flags); | |
573 | break; | |
574 | } | |
575 | return (data & 0xFF); | |
576 | } /* mace_read */ | |
577 | ||
578 | /* ---------------------------------------------------------------------------- | |
579 | mace_write | |
580 | Writes to a MACE register. This is bank independent; however, | |
581 | the caller must ensure that this call is not interruptable. We | |
582 | are assuming that during normal operation, the MACE is always in | |
583 | bank 0. | |
584 | ---------------------------------------------------------------------------- */ | |
585 | static void mace_write(mace_private *lp, kio_addr_t ioaddr, int reg, int data) | |
586 | { | |
587 | unsigned long flags; | |
588 | ||
589 | switch (reg >> 4) { | |
590 | case 0: /* register 0-15 */ | |
591 | outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg); | |
592 | break; | |
593 | case 1: /* register 16-31 */ | |
594 | spin_lock_irqsave(&lp->bank_lock, flags); | |
595 | MACEBANK(1); | |
596 | outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F)); | |
597 | MACEBANK(0); | |
598 | spin_unlock_irqrestore(&lp->bank_lock, flags); | |
599 | break; | |
600 | } | |
601 | } /* mace_write */ | |
602 | ||
603 | /* ---------------------------------------------------------------------------- | |
604 | mace_init | |
605 | Resets the MACE chip. | |
606 | ---------------------------------------------------------------------------- */ | |
607 | static int mace_init(mace_private *lp, kio_addr_t ioaddr, char *enet_addr) | |
608 | { | |
609 | int i; | |
610 | int ct = 0; | |
611 | ||
612 | /* MACE Software reset */ | |
613 | mace_write(lp, ioaddr, MACE_BIUCC, 1); | |
614 | while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) { | |
615 | /* Wait for reset bit to be cleared automatically after <= 200ns */; | |
616 | if(++ct > 500) | |
617 | { | |
618 | printk(KERN_ERR "mace: reset failed, card removed ?\n"); | |
619 | return -1; | |
620 | } | |
621 | udelay(1); | |
622 | } | |
623 | mace_write(lp, ioaddr, MACE_BIUCC, 0); | |
624 | ||
625 | /* The Am2150 requires that the MACE FIFOs operate in burst mode. */ | |
626 | mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F); | |
627 | ||
628 | mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */ | |
629 | mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */ | |
630 | ||
631 | /* | |
632 | * Bit 2-1 PORTSEL[1-0] Port Select. | |
633 | * 00 AUI/10Base-2 | |
634 | * 01 10Base-T | |
635 | * 10 DAI Port (reserved in Am2150) | |
636 | * 11 GPSI | |
637 | * For this card, only the first two are valid. | |
638 | * So, PLSCC should be set to | |
639 | * 0x00 for 10Base-2 | |
640 | * 0x02 for 10Base-T | |
641 | * Or just set ASEL in PHYCC below! | |
642 | */ | |
643 | switch (if_port) { | |
644 | case 1: | |
645 | mace_write(lp, ioaddr, MACE_PLSCC, 0x02); | |
646 | break; | |
647 | case 2: | |
648 | mace_write(lp, ioaddr, MACE_PLSCC, 0x00); | |
649 | break; | |
650 | default: | |
651 | mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4); | |
652 | /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden, | |
653 | and the MACE device will automatically select the operating media | |
654 | interface port. */ | |
655 | break; | |
656 | } | |
657 | ||
658 | mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR); | |
659 | /* Poll ADDRCHG bit */ | |
660 | ct = 0; | |
661 | while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG) | |
662 | { | |
663 | if(++ ct > 500) | |
664 | { | |
665 | printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n"); | |
666 | return -1; | |
667 | } | |
668 | } | |
669 | /* Set PADR register */ | |
670 | for (i = 0; i < ETHER_ADDR_LEN; i++) | |
671 | mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]); | |
672 | ||
673 | /* MAC Configuration Control Register should be written last */ | |
674 | /* Let set_multicast_list set this. */ | |
675 | /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */ | |
676 | mace_write(lp, ioaddr, MACE_MACCC, 0x00); | |
677 | return 0; | |
678 | } /* mace_init */ | |
679 | ||
680 | /* ---------------------------------------------------------------------------- | |
681 | nmclan_config | |
682 | This routine is scheduled to run after a CARD_INSERTION event | |
683 | is received, to configure the PCMCIA socket, and to make the | |
684 | ethernet device available to the system. | |
685 | ---------------------------------------------------------------------------- */ | |
686 | ||
687 | #define CS_CHECK(fn, ret) \ | |
688 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
689 | ||
690 | static void nmclan_config(dev_link_t *link) | |
691 | { | |
692 | client_handle_t handle = link->handle; | |
693 | struct net_device *dev = link->priv; | |
694 | mace_private *lp = netdev_priv(dev); | |
695 | tuple_t tuple; | |
696 | cisparse_t parse; | |
697 | u_char buf[64]; | |
698 | int i, last_ret, last_fn; | |
699 | kio_addr_t ioaddr; | |
700 | ||
701 | DEBUG(0, "nmclan_config(0x%p)\n", link); | |
702 | ||
703 | tuple.Attributes = 0; | |
704 | tuple.TupleData = buf; | |
705 | tuple.TupleDataMax = 64; | |
706 | tuple.TupleOffset = 0; | |
707 | tuple.DesiredTuple = CISTPL_CONFIG; | |
708 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
709 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
710 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
711 | link->conf.ConfigBase = parse.config.base; | |
712 | ||
713 | /* Configure card */ | |
714 | link->state |= DEV_CONFIG; | |
715 | ||
716 | CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io)); | |
717 | CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq)); | |
718 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf)); | |
719 | dev->irq = link->irq.AssignedIRQ; | |
720 | dev->base_addr = link->io.BasePort1; | |
721 | ||
722 | ioaddr = dev->base_addr; | |
723 | ||
724 | /* Read the ethernet address from the CIS. */ | |
725 | tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */; | |
726 | tuple.TupleData = buf; | |
727 | tuple.TupleDataMax = 64; | |
728 | tuple.TupleOffset = 0; | |
729 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
730 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
731 | memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN); | |
732 | ||
733 | /* Verify configuration by reading the MACE ID. */ | |
734 | { | |
735 | char sig[2]; | |
736 | ||
737 | sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL); | |
738 | sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH); | |
739 | if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) { | |
740 | DEBUG(0, "nmclan_cs configured: mace id=%x %x\n", | |
741 | sig[0], sig[1]); | |
742 | } else { | |
743 | printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should" | |
744 | " be 0x40 0x?9\n", sig[0], sig[1]); | |
745 | link->state &= ~DEV_CONFIG_PENDING; | |
746 | return; | |
747 | } | |
748 | } | |
749 | ||
750 | if(mace_init(lp, ioaddr, dev->dev_addr) == -1) | |
751 | goto failed; | |
752 | ||
753 | /* The if_port symbol can be set when the module is loaded */ | |
754 | if (if_port <= 2) | |
755 | dev->if_port = if_port; | |
756 | else | |
757 | printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n"); | |
758 | ||
759 | link->dev = &lp->node; | |
760 | link->state &= ~DEV_CONFIG_PENDING; | |
761 | SET_NETDEV_DEV(dev, &handle_to_dev(handle)); | |
762 | ||
763 | i = register_netdev(dev); | |
764 | if (i != 0) { | |
765 | printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n"); | |
766 | link->dev = NULL; | |
767 | goto failed; | |
768 | } | |
769 | ||
770 | strcpy(lp->node.dev_name, dev->name); | |
771 | ||
772 | printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port, hw_addr ", | |
773 | dev->name, dev->base_addr, dev->irq, if_names[dev->if_port]); | |
774 | for (i = 0; i < 6; i++) | |
775 | printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n")); | |
776 | return; | |
777 | ||
778 | cs_failed: | |
779 | cs_error(link->handle, last_fn, last_ret); | |
780 | failed: | |
781 | nmclan_release(link); | |
782 | return; | |
783 | ||
784 | } /* nmclan_config */ | |
785 | ||
786 | /* ---------------------------------------------------------------------------- | |
787 | nmclan_release | |
788 | After a card is removed, nmclan_release() will unregister the | |
789 | net device, and release the PCMCIA configuration. If the device | |
790 | is still open, this will be postponed until it is closed. | |
791 | ---------------------------------------------------------------------------- */ | |
792 | static void nmclan_release(dev_link_t *link) | |
793 | { | |
794 | ||
795 | DEBUG(0, "nmclan_release(0x%p)\n", link); | |
796 | ||
797 | pcmcia_release_configuration(link->handle); | |
798 | pcmcia_release_io(link->handle, &link->io); | |
799 | pcmcia_release_irq(link->handle, &link->irq); | |
800 | ||
801 | link->state &= ~DEV_CONFIG; | |
802 | } | |
803 | ||
804 | /* ---------------------------------------------------------------------------- | |
805 | nmclan_event | |
806 | The card status event handler. Mostly, this schedules other | |
807 | stuff to run after an event is received. A CARD_REMOVAL event | |
808 | also sets some flags to discourage the net drivers from trying | |
809 | to talk to the card any more. | |
810 | ---------------------------------------------------------------------------- */ | |
811 | static int nmclan_event(event_t event, int priority, | |
812 | event_callback_args_t *args) | |
813 | { | |
814 | dev_link_t *link = args->client_data; | |
815 | struct net_device *dev = link->priv; | |
816 | ||
817 | DEBUG(1, "nmclan_event(0x%06x)\n", event); | |
818 | ||
819 | switch (event) { | |
820 | case CS_EVENT_CARD_REMOVAL: | |
821 | link->state &= ~DEV_PRESENT; | |
822 | if (link->state & DEV_CONFIG) | |
823 | netif_device_detach(dev); | |
824 | break; | |
825 | case CS_EVENT_CARD_INSERTION: | |
826 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
827 | nmclan_config(link); | |
828 | break; | |
829 | case CS_EVENT_PM_SUSPEND: | |
830 | link->state |= DEV_SUSPEND; | |
831 | /* Fall through... */ | |
832 | case CS_EVENT_RESET_PHYSICAL: | |
833 | if (link->state & DEV_CONFIG) { | |
834 | if (link->open) | |
835 | netif_device_detach(dev); | |
836 | pcmcia_release_configuration(link->handle); | |
837 | } | |
838 | break; | |
839 | case CS_EVENT_PM_RESUME: | |
840 | link->state &= ~DEV_SUSPEND; | |
841 | /* Fall through... */ | |
842 | case CS_EVENT_CARD_RESET: | |
843 | if (link->state & DEV_CONFIG) { | |
844 | pcmcia_request_configuration(link->handle, &link->conf); | |
845 | if (link->open) { | |
846 | nmclan_reset(dev); | |
847 | netif_device_attach(dev); | |
848 | } | |
849 | } | |
850 | break; | |
851 | case CS_EVENT_RESET_REQUEST: | |
852 | return 1; | |
853 | break; | |
854 | } | |
855 | return 0; | |
856 | } /* nmclan_event */ | |
857 | ||
858 | /* ---------------------------------------------------------------------------- | |
859 | nmclan_reset | |
860 | Reset and restore all of the Xilinx and MACE registers. | |
861 | ---------------------------------------------------------------------------- */ | |
862 | static void nmclan_reset(struct net_device *dev) | |
863 | { | |
864 | mace_private *lp = netdev_priv(dev); | |
865 | ||
866 | #if RESET_XILINX | |
867 | dev_link_t *link = &lp->link; | |
868 | conf_reg_t reg; | |
869 | u_long OrigCorValue; | |
870 | ||
871 | /* Save original COR value */ | |
872 | reg.Function = 0; | |
873 | reg.Action = CS_READ; | |
874 | reg.Offset = CISREG_COR; | |
875 | reg.Value = 0; | |
876 | pcmcia_access_configuration_register(link->handle, ®); | |
877 | OrigCorValue = reg.Value; | |
878 | ||
879 | /* Reset Xilinx */ | |
880 | reg.Action = CS_WRITE; | |
881 | reg.Offset = CISREG_COR; | |
882 | DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n", | |
883 | OrigCorValue); | |
884 | reg.Value = COR_SOFT_RESET; | |
885 | pcmcia_access_configuration_register(link->handle, ®); | |
886 | /* Need to wait for 20 ms for PCMCIA to finish reset. */ | |
887 | ||
888 | /* Restore original COR configuration index */ | |
889 | reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK); | |
890 | pcmcia_access_configuration_register(link->handle, ®); | |
891 | /* Xilinx is now completely reset along with the MACE chip. */ | |
892 | lp->tx_free_frames=AM2150_MAX_TX_FRAMES; | |
893 | ||
894 | #endif /* #if RESET_XILINX */ | |
895 | ||
896 | /* Xilinx is now completely reset along with the MACE chip. */ | |
897 | lp->tx_free_frames=AM2150_MAX_TX_FRAMES; | |
898 | ||
899 | /* Reinitialize the MACE chip for operation. */ | |
900 | mace_init(lp, dev->base_addr, dev->dev_addr); | |
901 | mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT); | |
902 | ||
903 | /* Restore the multicast list and enable TX and RX. */ | |
904 | restore_multicast_list(dev); | |
905 | } /* nmclan_reset */ | |
906 | ||
907 | /* ---------------------------------------------------------------------------- | |
908 | mace_config | |
909 | [Someone tell me what this is supposed to do? Is if_port a defined | |
910 | standard? If so, there should be defines to indicate 1=10Base-T, | |
911 | 2=10Base-2, etc. including limited automatic detection.] | |
912 | ---------------------------------------------------------------------------- */ | |
913 | static int mace_config(struct net_device *dev, struct ifmap *map) | |
914 | { | |
915 | if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { | |
916 | if (map->port <= 2) { | |
917 | dev->if_port = map->port; | |
918 | printk(KERN_INFO "%s: switched to %s port\n", dev->name, | |
919 | if_names[dev->if_port]); | |
920 | } else | |
921 | return -EINVAL; | |
922 | } | |
923 | return 0; | |
924 | } /* mace_config */ | |
925 | ||
926 | /* ---------------------------------------------------------------------------- | |
927 | mace_open | |
928 | Open device driver. | |
929 | ---------------------------------------------------------------------------- */ | |
930 | static int mace_open(struct net_device *dev) | |
931 | { | |
932 | kio_addr_t ioaddr = dev->base_addr; | |
933 | mace_private *lp = netdev_priv(dev); | |
934 | dev_link_t *link = &lp->link; | |
935 | ||
936 | if (!DEV_OK(link)) | |
937 | return -ENODEV; | |
938 | ||
939 | link->open++; | |
940 | ||
941 | MACEBANK(0); | |
942 | ||
943 | netif_start_queue(dev); | |
944 | nmclan_reset(dev); | |
945 | ||
946 | return 0; /* Always succeed */ | |
947 | } /* mace_open */ | |
948 | ||
949 | /* ---------------------------------------------------------------------------- | |
950 | mace_close | |
951 | Closes device driver. | |
952 | ---------------------------------------------------------------------------- */ | |
953 | static int mace_close(struct net_device *dev) | |
954 | { | |
955 | kio_addr_t ioaddr = dev->base_addr; | |
956 | mace_private *lp = netdev_priv(dev); | |
957 | dev_link_t *link = &lp->link; | |
958 | ||
959 | DEBUG(2, "%s: shutting down ethercard.\n", dev->name); | |
960 | ||
961 | /* Mask off all interrupts from the MACE chip. */ | |
962 | outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR); | |
963 | ||
964 | link->open--; | |
965 | netif_stop_queue(dev); | |
966 | ||
967 | return 0; | |
968 | } /* mace_close */ | |
969 | ||
970 | static void netdev_get_drvinfo(struct net_device *dev, | |
971 | struct ethtool_drvinfo *info) | |
972 | { | |
973 | strcpy(info->driver, DRV_NAME); | |
974 | strcpy(info->version, DRV_VERSION); | |
975 | sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr); | |
976 | } | |
977 | ||
978 | #ifdef PCMCIA_DEBUG | |
979 | static u32 netdev_get_msglevel(struct net_device *dev) | |
980 | { | |
981 | return pc_debug; | |
982 | } | |
983 | ||
984 | static void netdev_set_msglevel(struct net_device *dev, u32 level) | |
985 | { | |
986 | pc_debug = level; | |
987 | } | |
988 | #endif /* PCMCIA_DEBUG */ | |
989 | ||
990 | static struct ethtool_ops netdev_ethtool_ops = { | |
991 | .get_drvinfo = netdev_get_drvinfo, | |
992 | #ifdef PCMCIA_DEBUG | |
993 | .get_msglevel = netdev_get_msglevel, | |
994 | .set_msglevel = netdev_set_msglevel, | |
995 | #endif /* PCMCIA_DEBUG */ | |
996 | }; | |
997 | ||
998 | /* ---------------------------------------------------------------------------- | |
999 | mace_start_xmit | |
1000 | This routine begins the packet transmit function. When completed, | |
1001 | it will generate a transmit interrupt. | |
1002 | ||
1003 | According to /usr/src/linux/net/inet/dev.c, if _start_xmit | |
1004 | returns 0, the "packet is now solely the responsibility of the | |
1005 | driver." If _start_xmit returns non-zero, the "transmission | |
1006 | failed, put skb back into a list." | |
1007 | ---------------------------------------------------------------------------- */ | |
1008 | ||
1009 | static void mace_tx_timeout(struct net_device *dev) | |
1010 | { | |
1011 | mace_private *lp = netdev_priv(dev); | |
1012 | dev_link_t *link = &lp->link; | |
1013 | ||
1014 | printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name); | |
1015 | #if RESET_ON_TIMEOUT | |
1016 | printk("resetting card\n"); | |
1017 | pcmcia_reset_card(link->handle, NULL); | |
1018 | #else /* #if RESET_ON_TIMEOUT */ | |
1019 | printk("NOT resetting card\n"); | |
1020 | #endif /* #if RESET_ON_TIMEOUT */ | |
1021 | dev->trans_start = jiffies; | |
1022 | netif_wake_queue(dev); | |
1023 | } | |
1024 | ||
1025 | static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1026 | { | |
1027 | mace_private *lp = netdev_priv(dev); | |
1028 | kio_addr_t ioaddr = dev->base_addr; | |
1029 | ||
1030 | netif_stop_queue(dev); | |
1031 | ||
1032 | DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n", | |
1033 | dev->name, (long)skb->len); | |
1034 | ||
1035 | #if (!TX_INTERRUPTABLE) | |
1036 | /* Disable MACE TX interrupts. */ | |
1037 | outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT, | |
1038 | ioaddr + AM2150_MACE_BASE + MACE_IMR); | |
1039 | lp->tx_irq_disabled=1; | |
1040 | #endif /* #if (!TX_INTERRUPTABLE) */ | |
1041 | ||
1042 | { | |
1043 | /* This block must not be interrupted by another transmit request! | |
1044 | mace_tx_timeout will take care of timer-based retransmissions from | |
1045 | the upper layers. The interrupt handler is guaranteed never to | |
1046 | service a transmit interrupt while we are in here. | |
1047 | */ | |
1048 | ||
1049 | lp->linux_stats.tx_bytes += skb->len; | |
1050 | lp->tx_free_frames--; | |
1051 | ||
1052 | /* WARNING: Write the _exact_ number of bytes written in the header! */ | |
1053 | /* Put out the word header [must be an outw()] . . . */ | |
1054 | outw(skb->len, ioaddr + AM2150_XMT); | |
1055 | /* . . . and the packet [may be any combination of outw() and outb()] */ | |
1056 | outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1); | |
1057 | if (skb->len & 1) { | |
1058 | /* Odd byte transfer */ | |
1059 | outb(skb->data[skb->len-1], ioaddr + AM2150_XMT); | |
1060 | } | |
1061 | ||
1062 | dev->trans_start = jiffies; | |
1063 | ||
1064 | #if MULTI_TX | |
1065 | if (lp->tx_free_frames > 0) | |
1066 | netif_start_queue(dev); | |
1067 | #endif /* #if MULTI_TX */ | |
1068 | } | |
1069 | ||
1070 | #if (!TX_INTERRUPTABLE) | |
1071 | /* Re-enable MACE TX interrupts. */ | |
1072 | lp->tx_irq_disabled=0; | |
1073 | outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR); | |
1074 | #endif /* #if (!TX_INTERRUPTABLE) */ | |
1075 | ||
1076 | dev_kfree_skb(skb); | |
1077 | ||
1078 | return 0; | |
1079 | } /* mace_start_xmit */ | |
1080 | ||
1081 | /* ---------------------------------------------------------------------------- | |
1082 | mace_interrupt | |
1083 | The interrupt handler. | |
1084 | ---------------------------------------------------------------------------- */ | |
1085 | static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
1086 | { | |
1087 | struct net_device *dev = (struct net_device *) dev_id; | |
1088 | mace_private *lp = netdev_priv(dev); | |
1089 | kio_addr_t ioaddr = dev->base_addr; | |
1090 | int status; | |
1091 | int IntrCnt = MACE_MAX_IR_ITERATIONS; | |
1092 | ||
1093 | if (dev == NULL) { | |
1094 | DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n", | |
1095 | irq); | |
1096 | return IRQ_NONE; | |
1097 | } | |
1098 | ||
1099 | if (lp->tx_irq_disabled) { | |
1100 | printk( | |
1101 | (lp->tx_irq_disabled? | |
1102 | KERN_NOTICE "%s: Interrupt with tx_irq_disabled " | |
1103 | "[isr=%02X, imr=%02X]\n": | |
1104 | KERN_NOTICE "%s: Re-entering the interrupt handler " | |
1105 | "[isr=%02X, imr=%02X]\n"), | |
1106 | dev->name, | |
1107 | inb(ioaddr + AM2150_MACE_BASE + MACE_IR), | |
1108 | inb(ioaddr + AM2150_MACE_BASE + MACE_IMR) | |
1109 | ); | |
1110 | /* WARNING: MACE_IR has been read! */ | |
1111 | return IRQ_NONE; | |
1112 | } | |
1113 | ||
1114 | if (!netif_device_present(dev)) { | |
1115 | DEBUG(2, "%s: interrupt from dead card\n", dev->name); | |
1116 | return IRQ_NONE; | |
1117 | } | |
1118 | ||
1119 | do { | |
1120 | /* WARNING: MACE_IR is a READ/CLEAR port! */ | |
1121 | status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR); | |
1122 | ||
1123 | DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status); | |
1124 | ||
1125 | if (status & MACE_IR_RCVINT) { | |
1126 | mace_rx(dev, MACE_MAX_RX_ITERATIONS); | |
1127 | } | |
1128 | ||
1129 | if (status & MACE_IR_XMTINT) { | |
1130 | unsigned char fifofc; | |
1131 | unsigned char xmtrc; | |
1132 | unsigned char xmtfs; | |
1133 | ||
1134 | fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC); | |
1135 | if ((fifofc & MACE_FIFOFC_XMTFC)==0) { | |
1136 | lp->linux_stats.tx_errors++; | |
1137 | outb(0xFF, ioaddr + AM2150_XMT_SKIP); | |
1138 | } | |
1139 | ||
1140 | /* Transmit Retry Count (XMTRC, reg 4) */ | |
1141 | xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC); | |
1142 | if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++; | |
1143 | lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC); | |
1144 | ||
1145 | if ( | |
1146 | (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) & | |
1147 | MACE_XMTFS_XMTSV /* Transmit Status Valid */ | |
1148 | ) { | |
1149 | lp->mace_stats.xmtsv++; | |
1150 | ||
1151 | if (xmtfs & ~MACE_XMTFS_XMTSV) { | |
1152 | if (xmtfs & MACE_XMTFS_UFLO) { | |
1153 | /* Underflow. Indicates that the Transmit FIFO emptied before | |
1154 | the end of frame was reached. */ | |
1155 | lp->mace_stats.uflo++; | |
1156 | } | |
1157 | if (xmtfs & MACE_XMTFS_LCOL) { | |
1158 | /* Late Collision */ | |
1159 | lp->mace_stats.lcol++; | |
1160 | } | |
1161 | if (xmtfs & MACE_XMTFS_MORE) { | |
1162 | /* MORE than one retry was needed */ | |
1163 | lp->mace_stats.more++; | |
1164 | } | |
1165 | if (xmtfs & MACE_XMTFS_ONE) { | |
1166 | /* Exactly ONE retry occurred */ | |
1167 | lp->mace_stats.one++; | |
1168 | } | |
1169 | if (xmtfs & MACE_XMTFS_DEFER) { | |
1170 | /* Transmission was defered */ | |
1171 | lp->mace_stats.defer++; | |
1172 | } | |
1173 | if (xmtfs & MACE_XMTFS_LCAR) { | |
1174 | /* Loss of carrier */ | |
1175 | lp->mace_stats.lcar++; | |
1176 | } | |
1177 | if (xmtfs & MACE_XMTFS_RTRY) { | |
1178 | /* Retry error: transmit aborted after 16 attempts */ | |
1179 | lp->mace_stats.rtry++; | |
1180 | } | |
1181 | } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */ | |
1182 | ||
1183 | } /* if (xmtfs & MACE_XMTFS_XMTSV) */ | |
1184 | ||
1185 | lp->linux_stats.tx_packets++; | |
1186 | lp->tx_free_frames++; | |
1187 | netif_wake_queue(dev); | |
1188 | } /* if (status & MACE_IR_XMTINT) */ | |
1189 | ||
1190 | if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) { | |
1191 | if (status & MACE_IR_JAB) { | |
1192 | /* Jabber Error. Excessive transmit duration (20-150ms). */ | |
1193 | lp->mace_stats.jab++; | |
1194 | } | |
1195 | if (status & MACE_IR_BABL) { | |
1196 | /* Babble Error. >1518 bytes transmitted. */ | |
1197 | lp->mace_stats.babl++; | |
1198 | } | |
1199 | if (status & MACE_IR_CERR) { | |
1200 | /* Collision Error. CERR indicates the absence of the | |
1201 | Signal Quality Error Test message after a packet | |
1202 | transmission. */ | |
1203 | lp->mace_stats.cerr++; | |
1204 | } | |
1205 | if (status & MACE_IR_RCVCCO) { | |
1206 | /* Receive Collision Count Overflow; */ | |
1207 | lp->mace_stats.rcvcco++; | |
1208 | } | |
1209 | if (status & MACE_IR_RNTPCO) { | |
1210 | /* Runt Packet Count Overflow */ | |
1211 | lp->mace_stats.rntpco++; | |
1212 | } | |
1213 | if (status & MACE_IR_MPCO) { | |
1214 | /* Missed Packet Count Overflow */ | |
1215 | lp->mace_stats.mpco++; | |
1216 | } | |
1217 | } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */ | |
1218 | ||
1219 | } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt)); | |
1220 | ||
1221 | return IRQ_HANDLED; | |
1222 | } /* mace_interrupt */ | |
1223 | ||
1224 | /* ---------------------------------------------------------------------------- | |
1225 | mace_rx | |
1226 | Receives packets. | |
1227 | ---------------------------------------------------------------------------- */ | |
1228 | static int mace_rx(struct net_device *dev, unsigned char RxCnt) | |
1229 | { | |
1230 | mace_private *lp = netdev_priv(dev); | |
1231 | kio_addr_t ioaddr = dev->base_addr; | |
1232 | unsigned char rx_framecnt; | |
1233 | unsigned short rx_status; | |
1234 | ||
1235 | while ( | |
1236 | ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) && | |
1237 | (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */ | |
1238 | (RxCnt--) | |
1239 | ) { | |
1240 | rx_status = inw(ioaddr + AM2150_RCV); | |
1241 | ||
1242 | DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status" | |
1243 | " 0x%X.\n", dev->name, rx_framecnt, rx_status); | |
1244 | ||
1245 | if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */ | |
1246 | lp->linux_stats.rx_errors++; | |
1247 | if (rx_status & MACE_RCVFS_OFLO) { | |
1248 | lp->mace_stats.oflo++; | |
1249 | } | |
1250 | if (rx_status & MACE_RCVFS_CLSN) { | |
1251 | lp->mace_stats.clsn++; | |
1252 | } | |
1253 | if (rx_status & MACE_RCVFS_FRAM) { | |
1254 | lp->mace_stats.fram++; | |
1255 | } | |
1256 | if (rx_status & MACE_RCVFS_FCS) { | |
1257 | lp->mace_stats.fcs++; | |
1258 | } | |
1259 | } else { | |
1260 | short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4; | |
1261 | /* Auto Strip is off, always subtract 4 */ | |
1262 | struct sk_buff *skb; | |
1263 | ||
1264 | lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV); | |
1265 | /* runt packet count */ | |
1266 | lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV); | |
1267 | /* rcv collision count */ | |
1268 | ||
1269 | DEBUG(3, " receiving packet size 0x%X rx_status" | |
1270 | " 0x%X.\n", pkt_len, rx_status); | |
1271 | ||
1272 | skb = dev_alloc_skb(pkt_len+2); | |
1273 | ||
1274 | if (skb != NULL) { | |
1275 | skb->dev = dev; | |
1276 | ||
1277 | skb_reserve(skb, 2); | |
1278 | insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1); | |
1279 | if (pkt_len & 1) | |
1280 | *(skb->tail-1) = inb(ioaddr + AM2150_RCV); | |
1281 | skb->protocol = eth_type_trans(skb, dev); | |
1282 | ||
1283 | netif_rx(skb); /* Send the packet to the upper (protocol) layers. */ | |
1284 | ||
1285 | dev->last_rx = jiffies; | |
1286 | lp->linux_stats.rx_packets++; | |
1287 | lp->linux_stats.rx_bytes += skb->len; | |
1288 | outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */ | |
1289 | continue; | |
1290 | } else { | |
1291 | DEBUG(1, "%s: couldn't allocate a sk_buff of size" | |
1292 | " %d.\n", dev->name, pkt_len); | |
1293 | lp->linux_stats.rx_dropped++; | |
1294 | } | |
1295 | } | |
1296 | outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */ | |
1297 | } /* while */ | |
1298 | ||
1299 | return 0; | |
1300 | } /* mace_rx */ | |
1301 | ||
1302 | /* ---------------------------------------------------------------------------- | |
1303 | pr_linux_stats | |
1304 | ---------------------------------------------------------------------------- */ | |
1305 | static void pr_linux_stats(struct net_device_stats *pstats) | |
1306 | { | |
1307 | DEBUG(2, "pr_linux_stats\n"); | |
1308 | DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n", | |
1309 | (long)pstats->rx_packets, (long)pstats->tx_packets); | |
1310 | DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n", | |
1311 | (long)pstats->rx_errors, (long)pstats->tx_errors); | |
1312 | DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n", | |
1313 | (long)pstats->rx_dropped, (long)pstats->tx_dropped); | |
1314 | DEBUG(2, " multicast=%-7ld collisions=%ld\n", | |
1315 | (long)pstats->multicast, (long)pstats->collisions); | |
1316 | ||
1317 | DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n", | |
1318 | (long)pstats->rx_length_errors, (long)pstats->rx_over_errors); | |
1319 | DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n", | |
1320 | (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors); | |
1321 | DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n", | |
1322 | (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors); | |
1323 | ||
1324 | DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n", | |
1325 | (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors); | |
1326 | DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n", | |
1327 | (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors); | |
1328 | DEBUG(2, " tx_window_errors=%ld\n", | |
1329 | (long)pstats->tx_window_errors); | |
1330 | } /* pr_linux_stats */ | |
1331 | ||
1332 | /* ---------------------------------------------------------------------------- | |
1333 | pr_mace_stats | |
1334 | ---------------------------------------------------------------------------- */ | |
1335 | static void pr_mace_stats(mace_statistics *pstats) | |
1336 | { | |
1337 | DEBUG(2, "pr_mace_stats\n"); | |
1338 | ||
1339 | DEBUG(2, " xmtsv=%-7d uflo=%d\n", | |
1340 | pstats->xmtsv, pstats->uflo); | |
1341 | DEBUG(2, " lcol=%-7d more=%d\n", | |
1342 | pstats->lcol, pstats->more); | |
1343 | DEBUG(2, " one=%-7d defer=%d\n", | |
1344 | pstats->one, pstats->defer); | |
1345 | DEBUG(2, " lcar=%-7d rtry=%d\n", | |
1346 | pstats->lcar, pstats->rtry); | |
1347 | ||
1348 | /* MACE_XMTRC */ | |
1349 | DEBUG(2, " exdef=%-7d xmtrc=%d\n", | |
1350 | pstats->exdef, pstats->xmtrc); | |
1351 | ||
1352 | /* RFS1--Receive Status (RCVSTS) */ | |
1353 | DEBUG(2, " oflo=%-7d clsn=%d\n", | |
1354 | pstats->oflo, pstats->clsn); | |
1355 | DEBUG(2, " fram=%-7d fcs=%d\n", | |
1356 | pstats->fram, pstats->fcs); | |
1357 | ||
1358 | /* RFS2--Runt Packet Count (RNTPC) */ | |
1359 | /* RFS3--Receive Collision Count (RCVCC) */ | |
1360 | DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n", | |
1361 | pstats->rfs_rntpc, pstats->rfs_rcvcc); | |
1362 | ||
1363 | /* MACE_IR */ | |
1364 | DEBUG(2, " jab=%-7d babl=%d\n", | |
1365 | pstats->jab, pstats->babl); | |
1366 | DEBUG(2, " cerr=%-7d rcvcco=%d\n", | |
1367 | pstats->cerr, pstats->rcvcco); | |
1368 | DEBUG(2, " rntpco=%-7d mpco=%d\n", | |
1369 | pstats->rntpco, pstats->mpco); | |
1370 | ||
1371 | /* MACE_MPC */ | |
1372 | DEBUG(2, " mpc=%d\n", pstats->mpc); | |
1373 | ||
1374 | /* MACE_RNTPC */ | |
1375 | DEBUG(2, " rntpc=%d\n", pstats->rntpc); | |
1376 | ||
1377 | /* MACE_RCVCC */ | |
1378 | DEBUG(2, " rcvcc=%d\n", pstats->rcvcc); | |
1379 | ||
1380 | } /* pr_mace_stats */ | |
1381 | ||
1382 | /* ---------------------------------------------------------------------------- | |
1383 | update_stats | |
1384 | Update statistics. We change to register window 1, so this | |
1385 | should be run single-threaded if the device is active. This is | |
1386 | expected to be a rare operation, and it's simpler for the rest | |
1387 | of the driver to assume that window 0 is always valid rather | |
1388 | than use a special window-state variable. | |
1389 | ||
1390 | oflo & uflo should _never_ occur since it would mean the Xilinx | |
1391 | was not able to transfer data between the MACE FIFO and the | |
1392 | card's SRAM fast enough. If this happens, something is | |
1393 | seriously wrong with the hardware. | |
1394 | ---------------------------------------------------------------------------- */ | |
1395 | static void update_stats(kio_addr_t ioaddr, struct net_device *dev) | |
1396 | { | |
1397 | mace_private *lp = netdev_priv(dev); | |
1398 | ||
1399 | lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC); | |
1400 | lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC); | |
1401 | lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC); | |
1402 | /* At this point, mace_stats is fully updated for this call. | |
1403 | We may now update the linux_stats. */ | |
1404 | ||
1405 | /* The MACE has no equivalent for linux_stats field which are commented | |
1406 | out. */ | |
1407 | ||
1408 | /* lp->linux_stats.multicast; */ | |
1409 | lp->linux_stats.collisions = | |
1410 | lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc; | |
1411 | /* Collision: The MACE may retry sending a packet 15 times | |
1412 | before giving up. The retry count is in XMTRC. | |
1413 | Does each retry constitute a collision? | |
1414 | If so, why doesn't the RCVCC record these collisions? */ | |
1415 | ||
1416 | /* detailed rx_errors: */ | |
1417 | lp->linux_stats.rx_length_errors = | |
1418 | lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc; | |
1419 | /* lp->linux_stats.rx_over_errors */ | |
1420 | lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs; | |
1421 | lp->linux_stats.rx_frame_errors = lp->mace_stats.fram; | |
1422 | lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo; | |
1423 | lp->linux_stats.rx_missed_errors = | |
1424 | lp->mace_stats.mpco * 256 + lp->mace_stats.mpc; | |
1425 | ||
1426 | /* detailed tx_errors */ | |
1427 | lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry; | |
1428 | lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar; | |
1429 | /* LCAR usually results from bad cabling. */ | |
1430 | lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo; | |
1431 | lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr; | |
1432 | /* lp->linux_stats.tx_window_errors; */ | |
1433 | ||
1434 | return; | |
1435 | } /* update_stats */ | |
1436 | ||
1437 | /* ---------------------------------------------------------------------------- | |
1438 | mace_get_stats | |
1439 | Gathers ethernet statistics from the MACE chip. | |
1440 | ---------------------------------------------------------------------------- */ | |
1441 | static struct net_device_stats *mace_get_stats(struct net_device *dev) | |
1442 | { | |
1443 | mace_private *lp = netdev_priv(dev); | |
1444 | ||
1445 | update_stats(dev->base_addr, dev); | |
1446 | ||
1447 | DEBUG(1, "%s: updating the statistics.\n", dev->name); | |
1448 | pr_linux_stats(&lp->linux_stats); | |
1449 | pr_mace_stats(&lp->mace_stats); | |
1450 | ||
1451 | return &lp->linux_stats; | |
1452 | } /* net_device_stats */ | |
1453 | ||
1454 | /* ---------------------------------------------------------------------------- | |
1455 | updateCRC | |
1456 | Modified from Am79C90 data sheet. | |
1457 | ---------------------------------------------------------------------------- */ | |
1458 | ||
1459 | #ifdef BROKEN_MULTICAST | |
1460 | ||
1461 | static void updateCRC(int *CRC, int bit) | |
1462 | { | |
1463 | int poly[]={ | |
1464 | 1,1,1,0, 1,1,0,1, | |
1465 | 1,0,1,1, 1,0,0,0, | |
1466 | 1,0,0,0, 0,0,1,1, | |
1467 | 0,0,1,0, 0,0,0,0 | |
1468 | }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the | |
1469 | CRC generator polynomial. */ | |
1470 | ||
1471 | int j; | |
1472 | ||
1473 | /* shift CRC and control bit (CRC[32]) */ | |
1474 | for (j = 32; j > 0; j--) | |
1475 | CRC[j] = CRC[j-1]; | |
1476 | CRC[0] = 0; | |
1477 | ||
1478 | /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */ | |
1479 | if (bit ^ CRC[32]) | |
1480 | for (j = 0; j < 32; j++) | |
1481 | CRC[j] ^= poly[j]; | |
1482 | } /* updateCRC */ | |
1483 | ||
1484 | /* ---------------------------------------------------------------------------- | |
1485 | BuildLAF | |
1486 | Build logical address filter. | |
1487 | Modified from Am79C90 data sheet. | |
1488 | ||
1489 | Input | |
1490 | ladrf: logical address filter (contents initialized to 0) | |
1491 | adr: ethernet address | |
1492 | ---------------------------------------------------------------------------- */ | |
1493 | static void BuildLAF(int *ladrf, int *adr) | |
1494 | { | |
1495 | int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */ | |
1496 | ||
1497 | int i, byte; /* temporary array indices */ | |
1498 | int hashcode; /* the output object */ | |
1499 | ||
1500 | CRC[32]=0; | |
1501 | ||
1502 | for (byte = 0; byte < 6; byte++) | |
1503 | for (i = 0; i < 8; i++) | |
1504 | updateCRC(CRC, (adr[byte] >> i) & 1); | |
1505 | ||
1506 | hashcode = 0; | |
1507 | for (i = 0; i < 6; i++) | |
1508 | hashcode = (hashcode << 1) + CRC[i]; | |
1509 | ||
1510 | byte = hashcode >> 3; | |
1511 | ladrf[byte] |= (1 << (hashcode & 7)); | |
1512 | ||
1513 | #ifdef PCMCIA_DEBUG | |
1514 | if (pc_debug > 2) { | |
1515 | printk(KERN_DEBUG " adr ="); | |
1516 | for (i = 0; i < 6; i++) | |
1517 | printk(" %02X", adr[i]); | |
1518 | printk("\n" KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63]" | |
1519 | " =", hashcode); | |
1520 | for (i = 0; i < 8; i++) | |
1521 | printk(" %02X", ladrf[i]); | |
1522 | printk("\n"); | |
1523 | } | |
1524 | #endif | |
1525 | } /* BuildLAF */ | |
1526 | ||
1527 | /* ---------------------------------------------------------------------------- | |
1528 | restore_multicast_list | |
1529 | Restores the multicast filter for MACE chip to the last | |
1530 | set_multicast_list() call. | |
1531 | ||
1532 | Input | |
1533 | multicast_num_addrs | |
1534 | multicast_ladrf[] | |
1535 | ---------------------------------------------------------------------------- */ | |
1536 | static void restore_multicast_list(struct net_device *dev) | |
1537 | { | |
1538 | mace_private *lp = netdev_priv(dev); | |
1539 | int num_addrs = lp->multicast_num_addrs; | |
1540 | int *ladrf = lp->multicast_ladrf; | |
1541 | kio_addr_t ioaddr = dev->base_addr; | |
1542 | int i; | |
1543 | ||
1544 | DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", | |
1545 | dev->name, num_addrs); | |
1546 | ||
1547 | if (num_addrs > 0) { | |
1548 | ||
1549 | DEBUG(1, "Attempt to restore multicast list detected.\n"); | |
1550 | ||
1551 | mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR); | |
1552 | /* Poll ADDRCHG bit */ | |
1553 | while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG) | |
1554 | ; | |
1555 | /* Set LADRF register */ | |
1556 | for (i = 0; i < MACE_LADRF_LEN; i++) | |
1557 | mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]); | |
1558 | ||
1559 | mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL); | |
1560 | mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); | |
1561 | ||
1562 | } else if (num_addrs < 0) { | |
1563 | ||
1564 | /* Promiscuous mode: receive all packets */ | |
1565 | mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); | |
1566 | mace_write(lp, ioaddr, MACE_MACCC, | |
1567 | MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV | |
1568 | ); | |
1569 | ||
1570 | } else { | |
1571 | ||
1572 | /* Normal mode */ | |
1573 | mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); | |
1574 | mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); | |
1575 | ||
1576 | } | |
1577 | } /* restore_multicast_list */ | |
1578 | ||
1579 | /* ---------------------------------------------------------------------------- | |
1580 | set_multicast_list | |
1581 | Set or clear the multicast filter for this adaptor. | |
1582 | ||
1583 | Input | |
1584 | num_addrs == -1 Promiscuous mode, receive all packets | |
1585 | num_addrs == 0 Normal mode, clear multicast list | |
1586 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do | |
1587 | best-effort filtering. | |
1588 | Output | |
1589 | multicast_num_addrs | |
1590 | multicast_ladrf[] | |
1591 | ---------------------------------------------------------------------------- */ | |
1592 | ||
1593 | static void set_multicast_list(struct net_device *dev) | |
1594 | { | |
1595 | mace_private *lp = netdev_priv(dev); | |
1596 | int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */ | |
1597 | int i; | |
1598 | struct dev_mc_list *dmi = dev->mc_list; | |
1599 | ||
1600 | #ifdef PCMCIA_DEBUG | |
1601 | if (pc_debug > 1) { | |
1602 | static int old; | |
1603 | if (dev->mc_count != old) { | |
1604 | old = dev->mc_count; | |
1605 | DEBUG(0, "%s: setting Rx mode to %d addresses.\n", | |
1606 | dev->name, old); | |
1607 | } | |
1608 | } | |
1609 | #endif | |
1610 | ||
1611 | /* Set multicast_num_addrs. */ | |
1612 | lp->multicast_num_addrs = dev->mc_count; | |
1613 | ||
1614 | /* Set multicast_ladrf. */ | |
1615 | if (num_addrs > 0) { | |
1616 | /* Calculate multicast logical address filter */ | |
1617 | memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN); | |
1618 | for (i = 0; i < dev->mc_count; i++) { | |
1619 | memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN); | |
1620 | dmi = dmi->next; | |
1621 | BuildLAF(lp->multicast_ladrf, adr); | |
1622 | } | |
1623 | } | |
1624 | ||
1625 | restore_multicast_list(dev); | |
1626 | ||
1627 | } /* set_multicast_list */ | |
1628 | ||
1629 | #endif /* BROKEN_MULTICAST */ | |
1630 | ||
1631 | static void restore_multicast_list(struct net_device *dev) | |
1632 | { | |
1633 | kio_addr_t ioaddr = dev->base_addr; | |
1634 | mace_private *lp = netdev_priv(dev); | |
1635 | ||
1636 | DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name, | |
1637 | lp->multicast_num_addrs); | |
1638 | ||
1639 | if (dev->flags & IFF_PROMISC) { | |
1640 | /* Promiscuous mode: receive all packets */ | |
1641 | mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); | |
1642 | mace_write(lp, ioaddr, MACE_MACCC, | |
1643 | MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV | |
1644 | ); | |
1645 | } else { | |
1646 | /* Normal mode */ | |
1647 | mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); | |
1648 | mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); | |
1649 | } | |
1650 | } /* restore_multicast_list */ | |
1651 | ||
1652 | static void set_multicast_list(struct net_device *dev) | |
1653 | { | |
1654 | mace_private *lp = netdev_priv(dev); | |
1655 | ||
1656 | #ifdef PCMCIA_DEBUG | |
1657 | if (pc_debug > 1) { | |
1658 | static int old; | |
1659 | if (dev->mc_count != old) { | |
1660 | old = dev->mc_count; | |
1661 | DEBUG(0, "%s: setting Rx mode to %d addresses.\n", | |
1662 | dev->name, old); | |
1663 | } | |
1664 | } | |
1665 | #endif | |
1666 | ||
1667 | lp->multicast_num_addrs = dev->mc_count; | |
1668 | restore_multicast_list(dev); | |
1669 | ||
1670 | } /* set_multicast_list */ | |
1671 | ||
a58e26cb DB |
1672 | static struct pcmcia_device_id nmclan_ids[] = { |
1673 | PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941), | |
d277ad0e | 1674 | PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf), |
a58e26cb DB |
1675 | PCMCIA_DEVICE_NULL, |
1676 | }; | |
1677 | MODULE_DEVICE_TABLE(pcmcia, nmclan_ids); | |
1678 | ||
1da177e4 LT |
1679 | static struct pcmcia_driver nmclan_cs_driver = { |
1680 | .owner = THIS_MODULE, | |
1681 | .drv = { | |
1682 | .name = "nmclan_cs", | |
1683 | }, | |
1684 | .attach = nmclan_attach, | |
1e212f36 | 1685 | .event = nmclan_event, |
1da177e4 | 1686 | .detach = nmclan_detach, |
a58e26cb | 1687 | .id_table = nmclan_ids, |
1da177e4 LT |
1688 | }; |
1689 | ||
1690 | static int __init init_nmclan_cs(void) | |
1691 | { | |
1692 | return pcmcia_register_driver(&nmclan_cs_driver); | |
1693 | } | |
1694 | ||
1695 | static void __exit exit_nmclan_cs(void) | |
1696 | { | |
1697 | pcmcia_unregister_driver(&nmclan_cs_driver); | |
1698 | BUG_ON(dev_list != NULL); | |
1699 | } | |
1700 | ||
1701 | module_init(init_nmclan_cs); | |
1702 | module_exit(exit_nmclan_cs); |