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MOXA linux-2.6.x / linux-2.6.9-uc0 from sdlinux-moxaart.tgz
[linux-2.6.9-moxart.git] / drivers / net / hp100.c
blob3c783a4591fe92c0aed0ba76a6e35fc003f05862
1 /*
2 ** hp100.c
3 ** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
4 **
5 ** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 perex Exp perex $
6 **
7 ** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
8 ** Extended for new busmaster capable chipsets by
9 ** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
10 **
11 ** Maintained by: Jaroslav Kysela <perex@suse.cz>
12 **
13 ** This driver has only been tested with
14 ** -- HP J2585B 10/100 Mbit/s PCI Busmaster
15 ** -- HP J2585A 10/100 Mbit/s PCI
16 ** -- HP J2970 10 Mbit/s PCI Combo 10base-T/BNC
17 ** -- HP J2973 10 Mbit/s PCI 10base-T
18 ** -- HP J2573 10/100 ISA
19 ** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
20 ** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
21 **
22 ** but it should also work with the other CASCADE based adapters.
23 **
24 ** TODO:
25 ** - J2573 seems to hang sometimes when in shared memory mode.
26 ** - Mode for Priority TX
27 ** - Check PCI registers, performance might be improved?
28 ** - To reduce interrupt load in busmaster, one could switch off
29 ** the interrupts that are used to refill the queues whenever the
30 ** queues are filled up to more than a certain threshold.
31 ** - some updates for EISA version of card
32 **
33 **
34 ** This code is free software; you can redistribute it and/or modify
35 ** it under the terms of the GNU General Public License as published by
36 ** the Free Software Foundation; either version 2 of the License, or
37 ** (at your option) any later version.
38 **
39 ** This code is distributed in the hope that it will be useful,
40 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
41 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42 ** GNU General Public License for more details.
43 **
44 ** You should have received a copy of the GNU General Public License
45 ** along with this program; if not, write to the Free Software
46 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
47 **
48 ** 1.57c -> 1.58
49 ** - used indent to change coding-style
50 ** - added KTI DP-200 EISA ID
51 ** - ioremap is also used for low (<1MB) memory (multi-architecture support)
52 **
53 ** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
54 ** - release resources on failure in init_module
55 **
56 ** 1.57 -> 1.57b - Jean II
57 ** - fix spinlocks, SMP is now working !
58 **
59 ** 1.56 -> 1.57
60 ** - updates for new PCI interface for 2.1 kernels
61 **
62 ** 1.55 -> 1.56
63 ** - removed printk in misc. interrupt and update statistics to allow
64 ** monitoring of card status
65 ** - timing changes in xmit routines, relogin to 100VG hub added when
66 ** driver does reset
67 ** - included fix for Compex FreedomLine PCI adapter
68 **
69 ** 1.54 -> 1.55
70 ** - fixed bad initialization in init_module
71 ** - added Compex FreedomLine adapter
72 ** - some fixes in card initialization
73 **
74 ** 1.53 -> 1.54
75 ** - added hardware multicast filter support (doesn't work)
76 ** - little changes in hp100_sense_lan routine
77 ** - added support for Coax and AUI (J2970)
78 ** - fix for multiple cards and hp100_mode parameter (insmod)
79 ** - fix for shared IRQ
80 **
81 ** 1.52 -> 1.53
82 ** - fixed bug in multicast support
83 **
84 */
85
86 #define HP100_DEFAULT_PRIORITY_TX 0
87
88 #undef HP100_DEBUG
89 #undef HP100_DEBUG_B /* Trace */
90 #undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
91
92 #undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
93 #undef HP100_DEBUG_TX
94 #undef HP100_DEBUG_IRQ
95 #undef HP100_DEBUG_RX
96
97 #undef HP100_MULTICAST_FILTER /* Need to be debugged... */
98
99 #include <linux/version.h>
100 #include <linux/module.h>
101 #include <linux/kernel.h>
102 #include <linux/string.h>
103 #include <linux/errno.h>
104 #include <linux/ioport.h>
105 #include <linux/slab.h>
106 #include <linux/interrupt.h>
107 #include <linux/eisa.h>
108 #include <linux/pci.h>
109 #include <linux/spinlock.h>
110 #include <linux/netdevice.h>
111 #include <linux/etherdevice.h>
112 #include <linux/skbuff.h>
113 #include <linux/types.h>
114 #include <linux/config.h> /* for CONFIG_PCI */
115 #include <linux/delay.h>
116 #include <linux/init.h>
117
118 #include <asm/bitops.h>
119 #include <asm/io.h>
120
121 #include "hp100.h"
122
123 /*
124 * defines
125 */
126
127 #define HP100_BUS_ISA 0
128 #define HP100_BUS_EISA 1
129 #define HP100_BUS_PCI 2
130
131 #define HP100_REGION_SIZE 0x20 /* for ioports */
132 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
133
134 #define HP100_MAX_PACKET_SIZE (1536+4)
135 #define HP100_MIN_PACKET_SIZE 60
136
137 #ifndef HP100_DEFAULT_RX_RATIO
138 /* default - 75% onboard memory on the card are used for RX packets */
139 #define HP100_DEFAULT_RX_RATIO 75
140 #endif
141
142 #ifndef HP100_DEFAULT_PRIORITY_TX
143 /* default - don't enable transmit outgoing packets as priority */
144 #define HP100_DEFAULT_PRIORITY_TX 0
145 #endif
146
147 /*
148 * structures
149 */
150
151 struct hp100_private {
152 spinlock_t lock;
153 char id[HP100_SIG_LEN];
154 u_short chip;
155 u_short soft_model;
156 u_int memory_size;
157 u_int virt_memory_size;
158 u_short rx_ratio; /* 1 - 99 */
159 u_short priority_tx; /* != 0 - priority tx */
160 u_short mode; /* PIO, Shared Mem or Busmaster */
161 u_char bus;
162 struct pci_dev *pci_dev;
163 short mem_mapped; /* memory mapped access */
164 void *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
165 unsigned long mem_ptr_phys; /* physical memory mapped area */
166 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
167 int hub_status; /* was login to hub successful? */
168 u_char mac1_mode;
169 u_char mac2_mode;
170 u_char hash_bytes[8];
171 struct net_device_stats stats;
172
173 /* Rings for busmaster mode: */
174 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
175 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
176 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
177 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
178
179 hp100_ring_t rxring[MAX_RX_PDL];
180 hp100_ring_t txring[MAX_TX_PDL];
181
182 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
183 u_long whatever_offset; /* Offset to bus/phys/dma address */
184 int rxrcommit; /* # Rx PDLs commited to adapter */
185 int txrcommit; /* # Tx PDLs commited to adapter */
186 };
187
188 /*
189 * variables
190 */
191 static const char *hp100_isa_tbl[] = {
192 "HWPF150", /* HP J2573 rev A */
193 "HWP1950", /* HP J2573 */
194 };
195
196 #ifdef CONFIG_EISA
197 static struct eisa_device_id hp100_eisa_tbl[] = {
198 { "HWPF180" }, /* HP J2577 rev A */
199 { "HWP1920" }, /* HP 27248B */
200 { "HWP1940" }, /* HP J2577 */
201 { "HWP1990" }, /* HP J2577 */
202 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
203 { "CPX0401" }, /* FreedomLine 100/VG */
204 { "" } /* Mandatory final entry ! */
205 };
206 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
207 #endif
208
209 #ifdef CONFIG_PCI
210 static struct pci_device_id hp100_pci_tbl[] = {
211 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
212 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
217 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
218 {} /* Terminating entry */
219 };
220 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
221 #endif
222
223 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
224 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
225 static int hp100_mode = 1;
226
227 MODULE_PARM(hp100_rx_ratio, "1i");
228 MODULE_PARM(hp100_priority_tx, "1i");
229 MODULE_PARM(hp100_mode, "1i");
230
231 /*
232 * prototypes
233 */
234
235 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
236 struct pci_dev *pci_dev);
237
238
239 static int hp100_open(struct net_device *dev);
240 static int hp100_close(struct net_device *dev);
241 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
242 static int hp100_start_xmit_bm(struct sk_buff *skb,
243 struct net_device *dev);
244 static void hp100_rx(struct net_device *dev);
245 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
246 static void hp100_misc_interrupt(struct net_device *dev);
247 static void hp100_update_stats(struct net_device *dev);
248 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
249 static void hp100_set_multicast_list(struct net_device *dev);
250 static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs);
251 static void hp100_start_interface(struct net_device *dev);
252 static void hp100_stop_interface(struct net_device *dev);
253 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
254 static int hp100_sense_lan(struct net_device *dev);
255 static int hp100_login_to_vg_hub(struct net_device *dev,
256 u_short force_relogin);
257 static int hp100_down_vg_link(struct net_device *dev);
258 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
259 static void hp100_BM_shutdown(struct net_device *dev);
260 static void hp100_mmuinit(struct net_device *dev);
261 static void hp100_init_pdls(struct net_device *dev);
262 static int hp100_init_rxpdl(struct net_device *dev,
263 register hp100_ring_t * ringptr,
264 register u_int * pdlptr);
265 static int hp100_init_txpdl(struct net_device *dev,
266 register hp100_ring_t * ringptr,
267 register u_int * pdlptr);
268 static void hp100_rxfill(struct net_device *dev);
269 static void hp100_hwinit(struct net_device *dev);
270 static void hp100_clean_txring(struct net_device *dev);
271 #ifdef HP100_DEBUG
272 static void hp100_RegisterDump(struct net_device *dev);
273 #endif
274
275 /* Conversion to new PCI API :
276 * Convert an address in a kernel buffer to a bus/phys/dma address.
277 * This work *only* for memory fragments part of lp->page_vaddr,
278 * because it was properly DMA allocated via pci_alloc_consistent(),
279 * so we just need to "retreive" the original mapping to bus/phys/dma
280 * address - Jean II */
281 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
282 {
283 return ((u_long) ptr) +
284 ((struct hp100_private *) (dev->priv))->whatever_offset;
285 }
286
287 /* TODO: This function should not really be needed in a good design... */
288 static void wait(void)
289 {
290 mdelay(1);
291 }
292
293 /*
294 * probe functions
295 * These functions should - if possible - avoid doing write operations
296 * since this could cause problems when the card is not installed.
297 */
298
299 /*
300 * Read board id and convert to string.
301 * Effectively same code as decode_eisa_sig
302 */
303 static __init const char *hp100_read_id(int ioaddr)
304 {
305 int i;
306 static char str[HP100_SIG_LEN];
307 unsigned char sig[4], sum;
308 unsigned short rev;
309
310 hp100_page(ID_MAC_ADDR);
311 sum = 0;
312 for (i = 0; i < 4; i++) {
313 sig[i] = hp100_inb(BOARD_ID + i);
314 sum += sig[i];
315 }
316
317 sum += hp100_inb(BOARD_ID + i);
318 if (sum != 0xff)
319 return NULL; /* bad checksum */
320
321 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
322 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
323 str[2] = (sig[1] & 0x1f) + ('A' - 1);
324 rev = (sig[2] << 8) | sig[3];
325 sprintf(str + 3, "%04X", rev);
326
327 return str;
328 }
329
330 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
331 {
332 const char *sig;
333 int i;
334
335 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
336 goto err;
337
338 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
339 release_region(ioaddr, HP100_REGION_SIZE);
340 goto err;
341 }
342
343 sig = hp100_read_id(ioaddr);
344 release_region(ioaddr, HP100_REGION_SIZE);
345
346 if (sig == NULL)
347 goto err;
348
349 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
350 if (!strcmp(hp100_isa_tbl[i], sig))
351 break;
352
353 }
354
355 if (i < ARRAY_SIZE(hp100_isa_tbl))
356 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
357 err:
358 return -ENODEV;
359
360 }
361 /*
362 * Probe for ISA board.
363 * EISA and PCI are handled by device infrastructure.
364 */
365
366 static int __init hp100_isa_probe(struct net_device *dev, int addr)
367 {
368 int err = -ENODEV;
369
370 /* Probe for a specific ISA address */
371 if (addr > 0xff && addr < 0x400)
372 err = hp100_isa_probe1(dev, addr);
373
374 else if (addr != 0)
375 err = -ENXIO;
376
377 else {
378 /* Probe all ISA possible port regions */
379 for (addr = 0x100; addr < 0x400; addr += 0x20) {
380 err = hp100_isa_probe1(dev, addr);
381 if (!err)
382 break;
383 }
384 }
385 return err;
386 }
387
388
389 #ifndef MODULE
390 struct net_device * __init hp100_probe(int unit)
391 {
392 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
393 int err;
394
395 if (!dev)
396 return ERR_PTR(-ENODEV);
397
398 SET_MODULE_OWNER(dev);
399
400 #ifdef HP100_DEBUG_B
401 hp100_outw(0x4200, TRACE);
402 printk("hp100: %s: probe\n", dev->name);
403 #endif
404
405 if (unit >= 0) {
406 sprintf(dev->name, "eth%d", unit);
407 netdev_boot_setup_check(dev);
408 }
409
410 err = hp100_isa_probe(dev, dev->base_addr);
411 if (err)
412 goto out;
413
414 err = register_netdev(dev);
415 if (err)
416 goto out1;
417 return dev;
418 out1:
419 release_region(dev->base_addr, HP100_REGION_SIZE);
420 out:
421 free_netdev(dev);
422 return ERR_PTR(err);
423 }
424 #endif
425
426 static int __init hp100_probe1(struct net_device *dev, int ioaddr,
427 u_char bus, struct pci_dev *pci_dev)
428 {
429 int i;
430 int err = -ENODEV;
431 const char *eid;
432 u_int chip;
433 u_char uc;
434 u_int memory_size = 0, virt_memory_size = 0;
435 u_short local_mode, lsw;
436 short mem_mapped;
437 unsigned long mem_ptr_phys;
438 void **mem_ptr_virt;
439 struct hp100_private *lp;
440
441 #ifdef HP100_DEBUG_B
442 hp100_outw(0x4201, TRACE);
443 printk("hp100: %s: probe1\n", dev->name);
444 #endif
445
446 /* memory region for programmed i/o */
447 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
448 goto out1;
449
450 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
451 goto out2;
452
453 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
454 #ifdef HP100_DEBUG
455 if (chip == HP100_CHIPID_SHASTA)
456 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
457 else if (chip == HP100_CHIPID_RAINIER)
458 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
459 else if (chip == HP100_CHIPID_LASSEN)
460 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
461 else
462 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
463 #endif
464
465 dev->base_addr = ioaddr;
466
467 eid = hp100_read_id(ioaddr);
468 if (eid == NULL) { /* bad checksum? */
469 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
470 goto out2;
471 }
472
473 hp100_page(ID_MAC_ADDR);
474 for (i = uc = 0; i < 7; i++)
475 uc += hp100_inb(LAN_ADDR + i);
476 if (uc != 0xff) {
477 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
478 err = -EIO;
479 goto out2;
480 }
481
482 /* Make sure, that all registers are correctly updated... */
483
484 hp100_load_eeprom(dev, ioaddr);
485 wait();
486
487 /*
488 * Determine driver operation mode
489 *
490 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
491 * force driver modes:
492 * hp100_mode=1 -> default, use busmaster mode if configured.
493 * hp100_mode=2 -> enable shared memory mode
494 * hp100_mode=3 -> force use of i/o mapped mode.
495 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
496 */
497
498 /*
499 * LSW values:
500 * 0x2278 -> J2585B, PnP shared memory mode
501 * 0x2270 -> J2585B, shared memory mode, 0xdc000
502 * 0xa23c -> J2585B, I/O mapped mode
503 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
504 * 0x2220 -> EISA HP, I/O (Shasta Chip)
505 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
506 */
507
508 #if 0
509 local_mode = 0x2270;
510 hp100_outw(0xfefe, OPTION_LSW);
511 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
512 #endif
513
514 /* hp100_mode value maybe used in future by another card */
515 local_mode = hp100_mode;
516 if (local_mode < 1 || local_mode > 4)
517 local_mode = 1; /* default */
518 #ifdef HP100_DEBUG
519 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
520 hp100_inw(OPTION_LSW));
521 #endif
522
523 if (local_mode == 3) {
524 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
525 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
526 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
527 printk("hp100: IO mapped mode forced.\n");
528 } else if (local_mode == 2) {
529 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
530 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
531 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
532 printk("hp100: Shared memory mode requested.\n");
533 } else if (local_mode == 4) {
534 if (chip == HP100_CHIPID_LASSEN) {
535 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
536 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
537 printk("hp100: Busmaster mode requested.\n");
538 }
539 local_mode = 1;
540 }
541
542 if (local_mode == 1) { /* default behaviour */
543 lsw = hp100_inw(OPTION_LSW);
544
545 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
546 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
547 #ifdef HP100_DEBUG
548 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
549 #endif
550 local_mode = 3;
551 } else if (chip == HP100_CHIPID_LASSEN &&
552 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
553 /* Conversion to new PCI API :
554 * I don't have the doc, but I assume that the card
555 * can map the full 32bit address space.
556 * Also, we can have EISA Busmaster cards (not tested),
557 * so beware !!! - Jean II */
558 if((bus == HP100_BUS_PCI) &&
559 (pci_set_dma_mask(pci_dev, 0xffffffff))) {
560 /* Gracefully fallback to shared memory */
561 goto busmasterfail;
562 }
563 printk("hp100: Busmaster mode enabled.\n");
564 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
565 } else {
566 busmasterfail:
567 #ifdef HP100_DEBUG
568 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
569 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
570 #endif
571 /* In this case, try shared memory mode */
572 local_mode = 2;
573 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
574 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
575 }
576 }
577 #ifdef HP100_DEBUG
578 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
579 #endif
580
581 /* Check for shared memory on the card, eventually remap it */
582 hp100_page(HW_MAP);
583 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
584 mem_ptr_phys = 0UL;
585 mem_ptr_virt = NULL;
586 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
587 virt_memory_size = 0;
588
589 /* For memory mapped or busmaster mode, we want the memory address */
590 if (mem_mapped || (local_mode == 1)) {
591 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
592 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
593
594 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
595 printk("hp100: Can only use programmed i/o mode.\n");
596 mem_ptr_phys = 0;
597 mem_mapped = 0;
598 local_mode = 3; /* Use programmed i/o */
599 }
600
601 /* We do not need access to shared memory in busmaster mode */
602 /* However in slave mode we need to remap high (>1GB) card memory */
603 if (local_mode != 1) { /* = not busmaster */
604 /* We try with smaller memory sizes, if ioremap fails */
605 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
606 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
607 #ifdef HP100_DEBUG
608 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
609 #endif
610 } else {
611 #ifdef HP100_DEBUG
612 printk("hp100: %s: remapped 0x%x bytes high PCI memory at 0x%lx to %p.\n", dev->name, virt_memory_size, mem_ptr_phys, mem_ptr_virt);
613 #endif
614 break;
615 }
616 }
617
618 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
619 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
620 local_mode = 3;
621 virt_memory_size = 0;
622 }
623 }
624 }
625
626 if (local_mode == 3) { /* io mapped forced */
627 mem_mapped = 0;
628 mem_ptr_phys = 0;
629 mem_ptr_virt = NULL;
630 printk("hp100: Using (slow) programmed i/o mode.\n");
631 }
632
633 /* Initialise the "private" data structure for this card. */
634 lp = (struct hp100_private *) dev->priv;
635
636 spin_lock_init(&lp->lock);
637 strlcpy(lp->id, eid, HP100_SIG_LEN);
638 lp->chip = chip;
639 lp->mode = local_mode;
640 lp->bus = bus;
641 lp->pci_dev = pci_dev;
642 lp->priority_tx = hp100_priority_tx;
643 lp->rx_ratio = hp100_rx_ratio;
644 lp->mem_ptr_phys = mem_ptr_phys;
645 lp->mem_ptr_virt = mem_ptr_virt;
646 hp100_page(ID_MAC_ADDR);
647 lp->soft_model = hp100_inb(SOFT_MODEL);
648 lp->mac1_mode = HP100_MAC1MODE3;
649 lp->mac2_mode = HP100_MAC2MODE3;
650 memset(&lp->hash_bytes, 0x00, 8);
651
652 dev->base_addr = ioaddr;
653
654 lp->memory_size = memory_size;
655 lp->virt_memory_size = virt_memory_size;
656 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
657
658 dev->open = hp100_open;
659 dev->stop = hp100_close;
660
661 if (lp->mode == 1) /* busmaster */
662 dev->hard_start_xmit = hp100_start_xmit_bm;
663 else
664 dev->hard_start_xmit = hp100_start_xmit;
665
666 dev->get_stats = hp100_get_stats;
667 dev->set_multicast_list = &hp100_set_multicast_list;
668
669 /* Ask the card for which IRQ line it is configured */
670 if (bus == HP100_BUS_PCI) {
671 dev->irq = pci_dev->irq;
672 } else {
673 hp100_page(HW_MAP);
674 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
675 if (dev->irq == 2)
676 dev->irq = 9;
677 }
678
679 if (lp->mode == 1) /* busmaster */
680 dev->dma = 4;
681
682 /* Ask the card for its MAC address and store it for later use. */
683 hp100_page(ID_MAC_ADDR);
684 for (i = uc = 0; i < 6; i++)
685 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
686
687 /* Reset statistics (counters) */
688 hp100_clear_stats(lp, ioaddr);
689
690 /* If busmaster mode is wanted, a dma-capable memory area is needed for
691 * the rx and tx PDLs
692 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
693 * needed for the allocation of the memory area.
694 */
695
696 /* TODO: We do not need this with old cards, where PDLs are stored
697 * in the cards shared memory area. But currently, busmaster has been
698 * implemented/tested only with the lassen chip anyway... */
699 if (lp->mode == 1) { /* busmaster */
700 dma_addr_t page_baddr;
701 /* Get physically continous memory for TX & RX PDLs */
702 /* Conversion to new PCI API :
703 * Pages are always aligned and zeroed, no need to it ourself.
704 * Doc says should be OK for EISA bus as well - Jean II */
705 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
706 err = -ENOMEM;
707 goto out2;
708 }
709 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
710
711 #ifdef HP100_DEBUG_BM
712 printk("hp100: %s: Reserved DMA memory from 0x%x to 0x%x\n", dev->name, (u_int) lp->page_vaddr_algn, (u_int) lp->page_vaddr_algn + MAX_RINGSIZE);
713 #endif
714 lp->rxrcommit = lp->txrcommit = 0;
715 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
716 lp->txrhead = lp->txrtail = &(lp->txring[0]);
717 }
718
719 /* Initialise the card. */
720 /* (I'm not really sure if it's a good idea to do this during probing, but
721 * like this it's assured that the lan connection type can be sensed
722 * correctly)
723 */
724 hp100_hwinit(dev);
725
726 /* Try to find out which kind of LAN the card is connected to. */
727 lp->lan_type = hp100_sense_lan(dev);
728
729 /* Print out a message what about what we think we have probed. */
730 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
731 switch (bus) {
732 case HP100_BUS_EISA:
733 printk("EISA");
734 break;
735 case HP100_BUS_PCI:
736 printk("PCI");
737 break;
738 default:
739 printk("ISA");
740 break;
741 }
742 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
743
744 if (lp->mode == 2) { /* memory mapped */
745 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
746 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
747 if (mem_ptr_virt)
748 printk(" (virtual base %p)", mem_ptr_virt);
749 printk(".\n");
750
751 /* Set for info when doing ifconfig */
752 dev->mem_start = mem_ptr_phys;
753 dev->mem_end = mem_ptr_phys + lp->memory_size;
754 }
755
756 printk("hp100: ");
757 if (lp->lan_type != HP100_LAN_ERR)
758 printk("Adapter is attached to ");
759 switch (lp->lan_type) {
760 case HP100_LAN_100:
761 printk("100Mb/s Voice Grade AnyLAN network.\n");
762 break;
763 case HP100_LAN_10:
764 printk("10Mb/s network (10baseT).\n");
765 break;
766 case HP100_LAN_COAX:
767 printk("10Mb/s network (coax).\n");
768 break;
769 default:
770 printk("Warning! Link down.\n");
771 }
772
773 return 0;
774 out2:
775 release_region(ioaddr, HP100_REGION_SIZE);
776 out1:
777 return -ENODEV;
778 }
779
780 /* This procedure puts the card into a stable init state */
781 static void hp100_hwinit(struct net_device *dev)
782 {
783 int ioaddr = dev->base_addr;
784 struct hp100_private *lp = (struct hp100_private *) dev->priv;
785
786 #ifdef HP100_DEBUG_B
787 hp100_outw(0x4202, TRACE);
788 printk("hp100: %s: hwinit\n", dev->name);
789 #endif
790
791 /* Initialise the card. -------------------------------------------- */
792
793 /* Clear all pending Ints and disable Ints */
794 hp100_page(PERFORMANCE);
795 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
796 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
797
798 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
799 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
800
801 if (lp->mode == 1) {
802 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
803 wait();
804 } else {
805 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
806 hp100_cascade_reset(dev, 1);
807 hp100_page(MAC_CTRL);
808 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
809 }
810
811 /* Initiate EEPROM reload */
812 hp100_load_eeprom(dev, 0);
813
814 wait();
815
816 /* Go into reset again. */
817 hp100_cascade_reset(dev, 1);
818
819 /* Set Option Registers to a safe state */
820 hp100_outw(HP100_DEBUG_EN |
821 HP100_RX_HDR |
822 HP100_EE_EN |
823 HP100_BM_WRITE |
824 HP100_BM_READ | HP100_RESET_HB |
825 HP100_FAKE_INT |
826 HP100_INT_EN |
827 HP100_MEM_EN |
828 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
829
830 hp100_outw(HP100_TRI_INT |
831 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
832
833 hp100_outb(HP100_PRIORITY_TX |
834 HP100_ADV_NXT_PKT |
835 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
836
837 /* TODO: Configure MMU for Ram Test. */
838 /* TODO: Ram Test. */
839
840 /* Re-check if adapter is still at same i/o location */
841 /* (If the base i/o in eeprom has been changed but the */
842 /* registers had not been changed, a reload of the eeprom */
843 /* would move the adapter to the address stored in eeprom */
844
845 /* TODO: Code to implement. */
846
847 /* Until here it was code from HWdiscover procedure. */
848 /* Next comes code from mmuinit procedure of SCO BM driver which is
849 * called from HWconfigure in the SCO driver. */
850
851 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
852 * multicast filter...
853 */
854 hp100_mmuinit(dev);
855
856 /* We don't turn the interrupts on here - this is done by start_interface. */
857 wait(); /* TODO: Do we really need this? */
858
859 /* Enable Hardware (e.g. unreset) */
860 hp100_cascade_reset(dev, 0);
861
862 /* ------- initialisation complete ----------- */
863
864 /* Finally try to log in the Hub if there may be a VG connection. */
865 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
866 hp100_login_to_vg_hub(dev, 0); /* relogin */
867
868 }
869 \f
870
871 /*
872 * mmuinit - Reinitialise Cascade MMU and MAC settings.
873 * Note: Must already be in reset and leaves card in reset.
874 */
875 static void hp100_mmuinit(struct net_device *dev)
876 {
877 int ioaddr = dev->base_addr;
878 struct hp100_private *lp = (struct hp100_private *) dev->priv;
879 int i;
880
881 #ifdef HP100_DEBUG_B
882 hp100_outw(0x4203, TRACE);
883 printk("hp100: %s: mmuinit\n", dev->name);
884 #endif
885
886 #ifdef HP100_DEBUG
887 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
888 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
889 return;
890 }
891 #endif
892
893 /* Make sure IRQs are masked off and ack'ed. */
894 hp100_page(PERFORMANCE);
895 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
896 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
897
898 /*
899 * Enable Hardware
900 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
901 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
902 * - Clear Priority, Advance Pkt and Xmit Cmd
903 */
904
905 hp100_outw(HP100_DEBUG_EN |
906 HP100_RX_HDR |
907 HP100_EE_EN | HP100_RESET_HB |
908 HP100_IO_EN |
909 HP100_FAKE_INT |
910 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
911
912 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
913
914 if (lp->mode == 1) { /* busmaster */
915 hp100_outw(HP100_BM_WRITE |
916 HP100_BM_READ |
917 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
918 } else if (lp->mode == 2) { /* memory mapped */
919 hp100_outw(HP100_BM_WRITE |
920 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
921 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
922 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
923 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
924 } else if (lp->mode == 3) { /* i/o mapped mode */
925 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
926 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
927 }
928
929 hp100_page(HW_MAP);
930 hp100_outb(0, EARLYRXCFG);
931 hp100_outw(0, EARLYTXCFG);
932
933 /*
934 * Enable Bus Master mode
935 */
936 if (lp->mode == 1) { /* busmaster */
937 /* Experimental: Set some PCI configuration bits */
938 hp100_page(HW_MAP);
939 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
940 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
941
942 /* PCI Bus failures should result in a Misc. Interrupt */
943 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
944
945 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
946 hp100_page(HW_MAP);
947 /* Use Burst Mode and switch on PAGE_CK */
948 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
949 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
950 hp100_orb(HP100_BM_PAGE_CK, BM);
951 hp100_orb(HP100_BM_MASTER, BM);
952 } else { /* not busmaster */
953
954 hp100_page(HW_MAP);
955 hp100_andb(~HP100_BM_MASTER, BM);
956 }
957
958 /*
959 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
960 */
961 hp100_page(MMU_CFG);
962 if (lp->mode == 1) { /* only needed for Busmaster */
963 int xmit_stop, recv_stop;
964
965 if ((lp->chip == HP100_CHIPID_RAINIER)
966 || (lp->chip == HP100_CHIPID_SHASTA)) {
967 int pdl_stop;
968
969 /*
970 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
971 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
972 * to the next higher 1k boundary) bytes for the rx-pdl's
973 * Note: For non-etr chips the transmit stop register must be
974 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
975 */
976 pdl_stop = lp->memory_size;
977 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
978 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
979 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
980 #ifdef HP100_DEBUG_BM
981 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
982 #endif
983 } else {
984 /* ETR chip (Lassen) in busmaster mode */
985 xmit_stop = (lp->memory_size) - 1;
986 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
987 }
988
989 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
990 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
991 #ifdef HP100_DEBUG_BM
992 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
993 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
994 #endif
995 } else {
996 /* Slave modes (memory mapped and programmed io) */
997 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
998 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
999 #ifdef HP100_DEBUG
1000 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1001 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1002 #endif
1003 }
1004
1005 /* Write MAC address into page 1 */
1006 hp100_page(MAC_ADDRESS);
1007 for (i = 0; i < 6; i++)
1008 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1009
1010 /* Zero the multicast hash registers */
1011 for (i = 0; i < 8; i++)
1012 hp100_outb(0x0, HASH_BYTE0 + i);
1013
1014 /* Set up MAC defaults */
1015 hp100_page(MAC_CTRL);
1016
1017 /* Go to LAN Page and zero all filter bits */
1018 /* Zero accept error, accept multicast, accept broadcast and accept */
1019 /* all directed packet bits */
1020 hp100_andb(~(HP100_RX_EN |
1021 HP100_TX_EN |
1022 HP100_ACC_ERRORED |
1023 HP100_ACC_MC |
1024 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1025
1026 hp100_outb(0x00, MAC_CFG_2);
1027
1028 /* Zero the frame format bit. This works around a training bug in the */
1029 /* new hubs. */
1030 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1031
1032 if (lp->priority_tx)
1033 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1034 else
1035 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1036
1037 hp100_outb(HP100_ADV_NXT_PKT |
1038 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1039
1040 /* If busmaster, initialize the PDLs */
1041 if (lp->mode == 1)
1042 hp100_init_pdls(dev);
1043
1044 /* Go to performance page and initalize isr and imr registers */
1045 hp100_page(PERFORMANCE);
1046 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1047 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1048 }
1049
1050 /*
1051 * open/close functions
1052 */
1053
1054 static int hp100_open(struct net_device *dev)
1055 {
1056 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1057 #ifdef HP100_DEBUG_B
1058 int ioaddr = dev->base_addr;
1059 #endif
1060
1061 #ifdef HP100_DEBUG_B
1062 hp100_outw(0x4204, TRACE);
1063 printk("hp100: %s: open\n", dev->name);
1064 #endif
1065
1066 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1067 if (request_irq(dev->irq, hp100_interrupt,
1068 lp->bus == HP100_BUS_PCI || lp->bus ==
1069 HP100_BUS_EISA ? SA_SHIRQ : SA_INTERRUPT,
1070 "hp100", dev)) {
1071 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1072 return -EAGAIN;
1073 }
1074
1075 dev->trans_start = jiffies;
1076 netif_start_queue(dev);
1077
1078 lp->lan_type = hp100_sense_lan(dev);
1079 lp->mac1_mode = HP100_MAC1MODE3;
1080 lp->mac2_mode = HP100_MAC2MODE3;
1081 memset(&lp->hash_bytes, 0x00, 8);
1082
1083 hp100_stop_interface(dev);
1084
1085 hp100_hwinit(dev);
1086
1087 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1088
1089 return 0;
1090 }
1091
1092 /* The close function is called when the interface is to be brought down */
1093 static int hp100_close(struct net_device *dev)
1094 {
1095 int ioaddr = dev->base_addr;
1096 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1097
1098 #ifdef HP100_DEBUG_B
1099 hp100_outw(0x4205, TRACE);
1100 printk("hp100: %s: close\n", dev->name);
1101 #endif
1102
1103 hp100_page(PERFORMANCE);
1104 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1105
1106 hp100_stop_interface(dev);
1107
1108 if (lp->lan_type == HP100_LAN_100)
1109 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1110
1111 netif_stop_queue(dev);
1112
1113 free_irq(dev->irq, dev);
1114
1115 #ifdef HP100_DEBUG
1116 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1117 hp100_inw(OPTION_LSW));
1118 #endif
1119
1120 return 0;
1121 }
1122 \f
1123
1124 /*
1125 * Configure the PDL Rx rings and LAN
1126 */
1127 static void hp100_init_pdls(struct net_device *dev)
1128 {
1129 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1130 hp100_ring_t *ringptr;
1131 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1132 int i;
1133
1134 #ifdef HP100_DEBUG_B
1135 int ioaddr = dev->base_addr;
1136 #endif
1137
1138 #ifdef HP100_DEBUG_B
1139 hp100_outw(0x4206, TRACE);
1140 printk("hp100: %s: init pdls\n", dev->name);
1141 #endif
1142
1143 if (0 == lp->page_vaddr_algn)
1144 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1145 else {
1146 /* pageptr shall point into the DMA accessible memory region */
1147 /* we use this pointer to status the upper limit of allocated */
1148 /* memory in the allocated page. */
1149 /* note: align the pointers to the pci cache line size */
1150 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1151 pageptr = lp->page_vaddr_algn;
1152
1153 lp->rxrcommit = 0;
1154 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1155
1156 /* Initialise Rx Ring */
1157 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1158 lp->rxring[i].next = ringptr;
1159 ringptr = &(lp->rxring[i]);
1160 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1161 }
1162
1163 /* Initialise Tx Ring */
1164 lp->txrcommit = 0;
1165 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1166 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1167 lp->txring[i].next = ringptr;
1168 ringptr = &(lp->txring[i]);
1169 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1170 }
1171 }
1172 }
1173 \f
1174
1175 /* These functions "format" the entries in the pdl structure */
1176 /* They return how much memory the fragments need. */
1177 static int hp100_init_rxpdl(struct net_device *dev,
1178 register hp100_ring_t * ringptr,
1179 register u32 * pdlptr)
1180 {
1181 /* pdlptr is starting address for this pdl */
1182
1183 if (0 != (((unsigned long) pdlptr) & 0xf))
1184 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1185 dev->name, (unsigned long) pdlptr);
1186
1187 ringptr->pdl = pdlptr + 1;
1188 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1189 ringptr->skb = (void *) NULL;
1190
1191 /*
1192 * Write address and length of first PDL Fragment (which is used for
1193 * storing the RX-Header
1194 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1195 * store this information. (PDH is at offset 0x04)
1196 */
1197 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1198
1199 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1200 *(pdlptr + 3) = 4; /* Length Frag 1 */
1201
1202 return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
1203 }
1204
1205
1206 static int hp100_init_txpdl(struct net_device *dev,
1207 register hp100_ring_t * ringptr,
1208 register u32 * pdlptr)
1209 {
1210 if (0 != (((unsigned long) pdlptr) & 0xf))
1211 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1212
1213 ringptr->pdl = pdlptr; /* +1; */
1214 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1215 ringptr->skb = (void *) NULL;
1216
1217 return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
1218 }
1219
1220 /*
1221 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1222 * for possible odd word alignment rounding up to next dword and set PDL
1223 * address for fragment#2
1224 * Returns: 0 if unable to allocate skb_buff
1225 * 1 if successful
1226 */
1227 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1228 struct net_device *dev)
1229 {
1230 #ifdef HP100_DEBUG_B
1231 int ioaddr = dev->base_addr;
1232 #endif
1233 #ifdef HP100_DEBUG_BM
1234 u_int *p;
1235 #endif
1236
1237 #ifdef HP100_DEBUG_B
1238 hp100_outw(0x4207, TRACE);
1239 printk("hp100: %s: build rx pdl\n", dev->name);
1240 #endif
1241
1242 /* Allocate skb buffer of maximum size */
1243 /* Note: This depends on the alloc_skb functions allocating more
1244 * space than requested, i.e. aligning to 16bytes */
1245
1246 ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
1247
1248 if (NULL != ringptr->skb) {
1249 /*
1250 * Reserve 2 bytes at the head of the buffer to land the IP header
1251 * on a long word boundary (According to the Network Driver section
1252 * in the Linux KHG, this should help to increase performance.)
1253 */
1254 skb_reserve(ringptr->skb, 2);
1255
1256 ringptr->skb->dev = dev;
1257 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1258
1259 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1260 /* Note: 1st Fragment is used for the 4 byte packet status
1261 * (receive header). Its PDL entries are set up by init_rxpdl. So
1262 * here we only have to set up the PDL fragment entries for the data
1263 * part. Those 4 bytes will be stored in the DMA memory region
1264 * directly before the PDL.
1265 */
1266 #ifdef HP100_DEBUG_BM
1267 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1268 dev->name, (u_int) ringptr->pdl,
1269 ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
1270 (unsigned int) ringptr->skb->data);
1271 #endif
1272
1273 /* Conversion to new PCI API : map skbuf data to PCI bus.
1274 * Doc says it's OK for EISA as well - Jean II */
1275 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1276 ringptr->pdl[3] = ((u_int) pci_map_single(((struct hp100_private *) (dev->priv))->pci_dev, ringptr->skb->data, MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE));
1277 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1278
1279 #ifdef HP100_DEBUG_BM
1280 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1281 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1282 #endif
1283 return (1);
1284 }
1285 /* else: */
1286 /* alloc_skb failed (no memory) -> still can receive the header
1287 * fragment into PDL memory. make PDL safe by clearing msgptr and
1288 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1289 */
1290 #ifdef HP100_DEBUG_BM
1291 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1292 #endif
1293
1294 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1295
1296 return (0);
1297 }
1298
1299 /*
1300 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1301 *
1302 * Makes assumption that skb's are always contiguous memory areas and
1303 * therefore PDLs contain only 2 physical fragments.
1304 * - While the number of Rx PDLs with buffers is less than maximum
1305 * a. Get a maximum packet size skb
1306 * b. Put the physical address of the buffer into the PDL.
1307 * c. Output physical address of PDL to adapter.
1308 */
1309 static void hp100_rxfill(struct net_device *dev)
1310 {
1311 int ioaddr = dev->base_addr;
1312
1313 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1314 hp100_ring_t *ringptr;
1315
1316 #ifdef HP100_DEBUG_B
1317 hp100_outw(0x4208, TRACE);
1318 printk("hp100: %s: rxfill\n", dev->name);
1319 #endif
1320
1321 hp100_page(PERFORMANCE);
1322
1323 while (lp->rxrcommit < MAX_RX_PDL) {
1324 /*
1325 ** Attempt to get a buffer and build a Rx PDL.
1326 */
1327 ringptr = lp->rxrtail;
1328 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1329 return; /* None available, return */
1330 }
1331
1332 /* Hand this PDL over to the card */
1333 /* Note: This needs performance page selected! */
1334 #ifdef HP100_DEBUG_BM
1335 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1336 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1337 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1338 #endif
1339
1340 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1341
1342 lp->rxrcommit += 1;
1343 lp->rxrtail = ringptr->next;
1344 }
1345 }
1346
1347 /*
1348 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1349 */
1350
1351 static void hp100_BM_shutdown(struct net_device *dev)
1352 {
1353 int ioaddr = dev->base_addr;
1354 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1355 unsigned long time;
1356
1357 #ifdef HP100_DEBUG_B
1358 hp100_outw(0x4209, TRACE);
1359 printk("hp100: %s: bm shutdown\n", dev->name);
1360 #endif
1361
1362 hp100_page(PERFORMANCE);
1363 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1364 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1365
1366 /* Ensure Interrupts are off */
1367 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1368
1369 /* Disable all MAC activity */
1370 hp100_page(MAC_CTRL);
1371 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1372
1373 /* If cascade MMU is not already in reset */
1374 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1375 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1376 * MMU pointers will not be reset out from underneath
1377 */
1378 hp100_page(MAC_CTRL);
1379 for (time = 0; time < 5000; time++) {
1380 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1381 break;
1382 }
1383
1384 /* Shutdown algorithm depends on the generation of Cascade */
1385 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1386 /* Disable Busmaster mode and wait for bit to go to zero. */
1387 hp100_page(HW_MAP);
1388 hp100_andb(~HP100_BM_MASTER, BM);
1389 /* 100 ms timeout */
1390 for (time = 0; time < 32000; time++) {
1391 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1392 break;
1393 }
1394 } else { /* Shasta or Rainier Shutdown/Reset */
1395 /* To ensure all bus master inloading activity has ceased,
1396 * wait for no Rx PDAs or no Rx packets on card.
1397 */
1398 hp100_page(PERFORMANCE);
1399 /* 100 ms timeout */
1400 for (time = 0; time < 10000; time++) {
1401 /* RX_PDL: PDLs not executed. */
1402 /* RX_PKT_CNT: RX'd packets on card. */
1403 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1404 break;
1405 }
1406
1407 if (time >= 10000)
1408 printk("hp100: %s: BM shutdown error.\n", dev->name);
1409
1410 /* To ensure all bus master outloading activity has ceased,
1411 * wait until the Tx PDA count goes to zero or no more Tx space
1412 * available in the Tx region of the card.
1413 */
1414 /* 100 ms timeout */
1415 for (time = 0; time < 10000; time++) {
1416 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1417 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1418 break;
1419 }
1420
1421 /* Disable Busmaster mode */
1422 hp100_page(HW_MAP);
1423 hp100_andb(~HP100_BM_MASTER, BM);
1424 } /* end of shutdown procedure for non-etr parts */
1425
1426 hp100_cascade_reset(dev, 1);
1427 }
1428 hp100_page(PERFORMANCE);
1429 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1430 /* Busmaster mode should be shut down now. */
1431 }
1432
1433 static int hp100_check_lan(struct net_device *dev)
1434 {
1435 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1436
1437 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1438 hp100_stop_interface(dev);
1439 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1440 printk("hp100: %s: no connection found - check wire\n", dev->name);
1441 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1442 return -EIO;
1443 }
1444 if (lp->lan_type == HP100_LAN_100)
1445 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1446 hp100_start_interface(dev);
1447 }
1448 return 0;
1449 }
1450
1451 /*
1452 * transmit functions
1453 */
1454
1455 /* tx function for busmaster mode */
1456 static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1457 {
1458 unsigned long flags;
1459 int i, ok_flag;
1460 int ioaddr = dev->base_addr;
1461 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1462 hp100_ring_t *ringptr;
1463
1464 #ifdef HP100_DEBUG_B
1465 hp100_outw(0x4210, TRACE);
1466 printk("hp100: %s: start_xmit_bm\n", dev->name);
1467 #endif
1468
1469 if (skb == NULL) {
1470 return 0;
1471 }
1472
1473 if (skb->len <= 0)
1474 return 0;
1475
1476 if (skb->len < ETH_ZLEN && lp->chip == HP100_CHIPID_SHASTA) {
1477 skb = skb_padto(skb, ETH_ZLEN);
1478 if (skb == NULL)
1479 return 0;
1480 }
1481
1482 /* Get Tx ring tail pointer */
1483 if (lp->txrtail->next == lp->txrhead) {
1484 /* No memory. */
1485 #ifdef HP100_DEBUG
1486 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1487 #endif
1488 /* not waited long enough since last tx? */
1489 if (jiffies - dev->trans_start < HZ)
1490 return -EAGAIN;
1491
1492 if (hp100_check_lan(dev))
1493 return -EIO;
1494
1495 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1496 /* we have a 100Mb/s adapter but it isn't connected to hub */
1497 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1498 hp100_stop_interface(dev);
1499 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1500 hp100_start_interface(dev);
1501 } else {
1502 spin_lock_irqsave(&lp->lock, flags);
1503 hp100_ints_off(); /* Useful ? Jean II */
1504 i = hp100_sense_lan(dev);
1505 hp100_ints_on();
1506 spin_unlock_irqrestore(&lp->lock, flags);
1507 if (i == HP100_LAN_ERR)
1508 printk("hp100: %s: link down detected\n", dev->name);
1509 else if (lp->lan_type != i) { /* cable change! */
1510 /* it's very hard - all network settings must be changed!!! */
1511 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1512 lp->lan_type = i;
1513 hp100_stop_interface(dev);
1514 if (lp->lan_type == HP100_LAN_100)
1515 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1516 hp100_start_interface(dev);
1517 } else {
1518 printk("hp100: %s: interface reset\n", dev->name);
1519 hp100_stop_interface(dev);
1520 if (lp->lan_type == HP100_LAN_100)
1521 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1522 hp100_start_interface(dev);
1523 }
1524 }
1525
1526 dev->trans_start = jiffies;
1527 return -EAGAIN;
1528 }
1529
1530 /*
1531 * we have to turn int's off before modifying this, otherwise
1532 * a tx_pdl_cleanup could occur at the same time
1533 */
1534 spin_lock_irqsave(&lp->lock, flags);
1535 ringptr = lp->txrtail;
1536 lp->txrtail = ringptr->next;
1537
1538 /* Check whether packet has minimal packet size */
1539 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1540 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1541
1542 ringptr->skb = skb;
1543 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1544 if (lp->chip == HP100_CHIPID_SHASTA) {
1545 /* TODO:Could someone who has the EISA card please check if this works? */
1546 ringptr->pdl[2] = i;
1547 } else { /* Lassen */
1548 /* In the PDL, don't use the padded size but the real packet size: */
1549 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1550 }
1551 /* Conversion to new PCI API : map skbuf data to PCI bus.
1552 * Doc says it's OK for EISA as well - Jean II */
1553 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1554
1555 /* Hand this PDL to the card. */
1556 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1557
1558 lp->txrcommit++;
1559 spin_unlock_irqrestore(&lp->lock, flags);
1560
1561 /* Update statistics */
1562 lp->stats.tx_packets++;
1563 lp->stats.tx_bytes += skb->len;
1564 dev->trans_start = jiffies;
1565
1566 return 0;
1567 }
1568 \f
1569
1570 /* clean_txring checks if packets have been sent by the card by reading
1571 * the TX_PDL register from the performance page and comparing it to the
1572 * number of commited packets. It then frees the skb's of the packets that
1573 * obviously have been sent to the network.
1574 *
1575 * Needs the PERFORMANCE page selected.
1576 */
1577 static void hp100_clean_txring(struct net_device *dev)
1578 {
1579 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1580 int ioaddr = dev->base_addr;
1581 int donecount;
1582
1583 #ifdef HP100_DEBUG_B
1584 hp100_outw(0x4211, TRACE);
1585 printk("hp100: %s: clean txring\n", dev->name);
1586 #endif
1587
1588 /* How many PDLs have been transmitted? */
1589 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1590
1591 #ifdef HP100_DEBUG
1592 if (donecount > MAX_TX_PDL)
1593 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1594 #endif
1595
1596 for (; 0 != donecount; donecount--) {
1597 #ifdef HP100_DEBUG_BM
1598 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1599 dev->name, (u_int) lp->txrhead->skb->data,
1600 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1601 #endif
1602 /* Conversion to new PCI API : NOP */
1603 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1604 dev_kfree_skb_any(lp->txrhead->skb);
1605 lp->txrhead->skb = (void *) NULL;
1606 lp->txrhead = lp->txrhead->next;
1607 lp->txrcommit--;
1608 }
1609 }
1610
1611 /* tx function for slave modes */
1612 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1613 {
1614 unsigned long flags;
1615 int i, ok_flag;
1616 int ioaddr = dev->base_addr;
1617 u_short val;
1618 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1619
1620 #ifdef HP100_DEBUG_B
1621 hp100_outw(0x4212, TRACE);
1622 printk("hp100: %s: start_xmit\n", dev->name);
1623 #endif
1624
1625 if (skb == NULL) {
1626 return 0;
1627 }
1628
1629 if (skb->len <= 0)
1630 return 0;
1631
1632 if (hp100_check_lan(dev))
1633 return -EIO;
1634
1635 /* If there is not enough free memory on the card... */
1636 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1637 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1638 #ifdef HP100_DEBUG
1639 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1640 #endif
1641 /* not waited long enough since last failed tx try? */
1642 if (jiffies - dev->trans_start < HZ) {
1643 #ifdef HP100_DEBUG
1644 printk("hp100: %s: trans_start timing problem\n",
1645 dev->name);
1646 #endif
1647 return -EAGAIN;
1648 }
1649 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1650 /* we have a 100Mb/s adapter but it isn't connected to hub */
1651 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1652 hp100_stop_interface(dev);
1653 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1654 hp100_start_interface(dev);
1655 } else {
1656 spin_lock_irqsave(&lp->lock, flags);
1657 hp100_ints_off(); /* Useful ? Jean II */
1658 i = hp100_sense_lan(dev);
1659 hp100_ints_on();
1660 spin_unlock_irqrestore(&lp->lock, flags);
1661 if (i == HP100_LAN_ERR)
1662 printk("hp100: %s: link down detected\n", dev->name);
1663 else if (lp->lan_type != i) { /* cable change! */
1664 /* it's very hard - all network setting must be changed!!! */
1665 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1666 lp->lan_type = i;
1667 hp100_stop_interface(dev);
1668 if (lp->lan_type == HP100_LAN_100)
1669 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1670 hp100_start_interface(dev);
1671 } else {
1672 printk("hp100: %s: interface reset\n", dev->name);
1673 hp100_stop_interface(dev);
1674 if (lp->lan_type == HP100_LAN_100)
1675 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1676 hp100_start_interface(dev);
1677 mdelay(1);
1678 }
1679 }
1680 dev->trans_start = jiffies;
1681 return -EAGAIN;
1682 }
1683
1684 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1685 #ifdef HP100_DEBUG_TX
1686 printk("hp100: %s: start_xmit: busy\n", dev->name);
1687 #endif
1688 }
1689
1690 spin_lock_irqsave(&lp->lock, flags);
1691 hp100_ints_off();
1692 val = hp100_inw(IRQ_STATUS);
1693 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1694 * when the current packet being transmitted on the wire is completed. */
1695 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1696 #ifdef HP100_DEBUG_TX
1697 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1698 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1699 #endif
1700
1701 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1702 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1703
1704 hp100_outw(i, DATA32); /* tell card the total packet length */
1705 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1706
1707 if (lp->mode == 2) { /* memory mapped */
1708 if (lp->mem_ptr_virt) { /* high pci memory was remapped */
1709 /* Note: The J2585B needs alignment to 32bits here! */
1710 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1711 if (!ok_flag)
1712 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1713 } else {
1714 /* Note: The J2585B needs alignment to 32bits here! */
1715 isa_memcpy_toio(lp->mem_ptr_phys, skb->data, (skb->len + 3) & ~3);
1716 if (!ok_flag)
1717 isa_memset_io(lp->mem_ptr_phys, 0, HP100_MIN_PACKET_SIZE - skb->len);
1718 }
1719 } else { /* programmed i/o */
1720 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1721 (skb->len + 3) >> 2);
1722 if (!ok_flag)
1723 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1724 hp100_outl(0, DATA32);
1725 }
1726
1727 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1728
1729 lp->stats.tx_packets++;
1730 lp->stats.tx_bytes += skb->len;
1731 dev->trans_start = jiffies;
1732 hp100_ints_on();
1733 spin_unlock_irqrestore(&lp->lock, flags);
1734
1735 dev_kfree_skb_any(skb);
1736
1737 #ifdef HP100_DEBUG_TX
1738 printk("hp100: %s: start_xmit: end\n", dev->name);
1739 #endif
1740
1741 return 0;
1742 }
1743 \f
1744
1745 /*
1746 * Receive Function (Non-Busmaster mode)
1747 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1748 * packet counter is non-zero.
1749 * For non-busmaster, this function does the whole work of transfering
1750 * the packet to the host memory and then up to higher layers via skb
1751 * and netif_rx.
1752 */
1753
1754 static void hp100_rx(struct net_device *dev)
1755 {
1756 int packets, pkt_len;
1757 int ioaddr = dev->base_addr;
1758 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1759 u_int header;
1760 struct sk_buff *skb;
1761
1762 #ifdef DEBUG_B
1763 hp100_outw(0x4213, TRACE);
1764 printk("hp100: %s: rx\n", dev->name);
1765 #endif
1766
1767 /* First get indication of received lan packet */
1768 /* RX_PKT_CND indicates the number of packets which have been fully */
1769 /* received onto the card but have not been fully transferred of the card */
1770 packets = hp100_inb(RX_PKT_CNT);
1771 #ifdef HP100_DEBUG_RX
1772 if (packets > 1)
1773 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1774 #endif
1775
1776 while (packets-- > 0) {
1777 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1778 /* really advanced to the next packet. */
1779 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1780 #ifdef HP100_DEBUG_RX
1781 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1782 #endif
1783 }
1784
1785 /* First we get the header, which contains information about the */
1786 /* actual length of the received packet. */
1787 if (lp->mode == 2) { /* memory mapped mode */
1788 if (lp->mem_ptr_virt) /* if memory was remapped */
1789 header = readl(lp->mem_ptr_virt);
1790 else
1791 header = isa_readl(lp->mem_ptr_phys);
1792 } else /* programmed i/o */
1793 header = hp100_inl(DATA32);
1794
1795 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1796
1797 #ifdef HP100_DEBUG_RX
1798 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1799 dev->name, header & HP100_PKT_LEN_MASK,
1800 (header >> 16) & 0xfff8, (header >> 16) & 7);
1801 #endif
1802
1803 /* Now we allocate the skb and transfer the data into it. */
1804 skb = dev_alloc_skb(pkt_len+2);
1805 if (skb == NULL) { /* Not enough memory->drop packet */
1806 #ifdef HP100_DEBUG
1807 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1808 dev->name, pkt_len);
1809 #endif
1810 lp->stats.rx_dropped++;
1811 } else { /* skb successfully allocated */
1812
1813 u_char *ptr;
1814
1815 skb_reserve(skb,2);
1816 skb->dev = dev;
1817
1818 /* ptr to start of the sk_buff data area */
1819 skb_put(skb, pkt_len);
1820 ptr = skb->data;
1821
1822 /* Now transfer the data from the card into that area */
1823 if (lp->mode == 2) {
1824 if (lp->mem_ptr_virt)
1825 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1826 /* Note alignment to 32bit transfers */
1827 else
1828 isa_memcpy_fromio(ptr, lp->mem_ptr_phys, pkt_len);
1829 } else /* io mapped */
1830 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1831
1832 skb->protocol = eth_type_trans(skb, dev);
1833
1834 #ifdef HP100_DEBUG_RX
1835 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1836 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1837 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1838 ptr[9], ptr[10], ptr[11]);
1839 #endif
1840 netif_rx(skb);
1841 dev->last_rx = jiffies;
1842 lp->stats.rx_packets++;
1843 lp->stats.rx_bytes += pkt_len;
1844 }
1845
1846 /* Indicate the card that we have got the packet */
1847 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1848
1849 switch (header & 0x00070000) {
1850 case (HP100_MULTI_ADDR_HASH << 16):
1851 case (HP100_MULTI_ADDR_NO_HASH << 16):
1852 lp->stats.multicast++;
1853 break;
1854 }
1855 } /* end of while(there are packets) loop */
1856 #ifdef HP100_DEBUG_RX
1857 printk("hp100_rx: %s: end\n", dev->name);
1858 #endif
1859 }
1860
1861 /*
1862 * Receive Function for Busmaster Mode
1863 */
1864 static void hp100_rx_bm(struct net_device *dev)
1865 {
1866 int ioaddr = dev->base_addr;
1867 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1868 hp100_ring_t *ptr;
1869 u_int header;
1870 int pkt_len;
1871
1872 #ifdef HP100_DEBUG_B
1873 hp100_outw(0x4214, TRACE);
1874 printk("hp100: %s: rx_bm\n", dev->name);
1875 #endif
1876
1877 #ifdef HP100_DEBUG
1878 if (0 == lp->rxrcommit) {
1879 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1880 return;
1881 } else
1882 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1883 * the cards BM engine */
1884 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1885 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1886 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1887 lp->rxrcommit);
1888 return;
1889 }
1890 #endif
1891
1892 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1893 /*
1894 * The packet was received into the pdl pointed to by lp->rxrhead (
1895 * the oldest pdl in the ring
1896 */
1897
1898 /* First we get the header, which contains information about the */
1899 /* actual length of the received packet. */
1900
1901 ptr = lp->rxrhead;
1902
1903 header = *(ptr->pdl - 1);
1904 pkt_len = (header & HP100_PKT_LEN_MASK);
1905
1906 /* Conversion to new PCI API : NOP */
1907 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1908
1909 #ifdef HP100_DEBUG_BM
1910 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1911 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1912 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1913 printk("hp100: %s: RX_PDL_COUNT:0x%x TX_PDL_COUNT:0x%x, RX_PKT_CNT=0x%x PDH=0x%x, Data@0x%x len=0x%x\n",
1914 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1915 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1916 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1917 #endif
1918
1919 if ((pkt_len >= MIN_ETHER_SIZE) &&
1920 (pkt_len <= MAX_ETHER_SIZE)) {
1921 if (ptr->skb == NULL) {
1922 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1923 /* can happen if we only allocated room for the pdh due to memory shortage. */
1924 lp->stats.rx_dropped++;
1925 } else {
1926 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1927 ptr->skb->protocol =
1928 eth_type_trans(ptr->skb, dev);
1929
1930 netif_rx(ptr->skb); /* Up and away... */
1931
1932 dev->last_rx = jiffies;
1933 lp->stats.rx_packets++;
1934 lp->stats.rx_bytes += pkt_len;
1935 }
1936
1937 switch (header & 0x00070000) {
1938 case (HP100_MULTI_ADDR_HASH << 16):
1939 case (HP100_MULTI_ADDR_NO_HASH << 16):
1940 lp->stats.multicast++;
1941 break;
1942 }
1943 } else {
1944 #ifdef HP100_DEBUG
1945 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1946 #endif
1947 if (ptr->skb != NULL)
1948 dev_kfree_skb_any(ptr->skb);
1949 lp->stats.rx_errors++;
1950 }
1951
1952 lp->rxrhead = lp->rxrhead->next;
1953
1954 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1955 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1956 /* No space for skb, header can still be received. */
1957 #ifdef HP100_DEBUG
1958 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1959 #endif
1960 return;
1961 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1962 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1963 lp->rxrtail = lp->rxrtail->next;
1964 }
1965
1966 }
1967 }
1968
1969 /*
1970 * statistics
1971 */
1972 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1973 {
1974 unsigned long flags;
1975 int ioaddr = dev->base_addr;
1976 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1977
1978 #ifdef HP100_DEBUG_B
1979 hp100_outw(0x4215, TRACE);
1980 #endif
1981
1982 spin_lock_irqsave(&lp->lock, flags);
1983 hp100_ints_off(); /* Useful ? Jean II */
1984 hp100_update_stats(dev);
1985 hp100_ints_on();
1986 spin_unlock_irqrestore(&lp->lock, flags);
1987 return &(lp->stats);
1988 }
1989
1990 static void hp100_update_stats(struct net_device *dev)
1991 {
1992 int ioaddr = dev->base_addr;
1993 u_short val;
1994 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1995
1996 #ifdef HP100_DEBUG_B
1997 hp100_outw(0x4216, TRACE);
1998 printk("hp100: %s: update-stats\n", dev->name);
1999 #endif
2000
2001 /* Note: Statistics counters clear when read. */
2002 hp100_page(MAC_CTRL);
2003 val = hp100_inw(DROPPED) & 0x0fff;
2004 lp->stats.rx_errors += val;
2005 lp->stats.rx_over_errors += val;
2006 val = hp100_inb(CRC);
2007 lp->stats.rx_errors += val;
2008 lp->stats.rx_crc_errors += val;
2009 val = hp100_inb(ABORT);
2010 lp->stats.tx_errors += val;
2011 lp->stats.tx_aborted_errors += val;
2012 hp100_page(PERFORMANCE);
2013 }
2014
2015 static void hp100_misc_interrupt(struct net_device *dev)
2016 {
2017 #ifdef HP100_DEBUG_B
2018 int ioaddr = dev->base_addr;
2019 #endif
2020 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2021
2022 #ifdef HP100_DEBUG_B
2023 int ioaddr = dev->base_addr;
2024 hp100_outw(0x4216, TRACE);
2025 printk("hp100: %s: misc_interrupt\n", dev->name);
2026 #endif
2027
2028 /* Note: Statistics counters clear when read. */
2029 lp->stats.rx_errors++;
2030 lp->stats.tx_errors++;
2031 }
2032
2033 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2034 {
2035 unsigned long flags;
2036
2037 #ifdef HP100_DEBUG_B
2038 hp100_outw(0x4217, TRACE);
2039 printk("hp100: %s: clear_stats\n", dev->name);
2040 #endif
2041
2042 spin_lock_irqsave(&lp->lock, flags);
2043 hp100_page(MAC_CTRL); /* get all statistics bytes */
2044 hp100_inw(DROPPED);
2045 hp100_inb(CRC);
2046 hp100_inb(ABORT);
2047 hp100_page(PERFORMANCE);
2048 spin_unlock_irqrestore(&lp->lock, flags);
2049 }
2050 \f
2051
2052 /*
2053 * multicast setup
2054 */
2055
2056 /*
2057 * Set or clear the multicast filter for this adapter.
2058 */
2059
2060 static void hp100_set_multicast_list(struct net_device *dev)
2061 {
2062 unsigned long flags;
2063 int ioaddr = dev->base_addr;
2064 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2065
2066 #ifdef HP100_DEBUG_B
2067 hp100_outw(0x4218, TRACE);
2068 printk("hp100: %s: set_mc_list\n", dev->name);
2069 #endif
2070
2071 spin_lock_irqsave(&lp->lock, flags);
2072 hp100_ints_off();
2073 hp100_page(MAC_CTRL);
2074 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2075
2076 if (dev->flags & IFF_PROMISC) {
2077 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2078 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2079 memset(&lp->hash_bytes, 0xff, 8);
2080 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2081 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2082 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2083 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2084 if (dev->flags & IFF_ALLMULTI) {
2085 /* set hash filter to receive all multicast packets */
2086 memset(&lp->hash_bytes, 0xff, 8);
2087 } else {
2088 int i, j, idx;
2089 u_char *addrs;
2090 struct dev_mc_list *dmi;
2091
2092 memset(&lp->hash_bytes, 0x00, 8);
2093 #ifdef HP100_DEBUG
2094 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2095 #endif
2096 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2097 addrs = dmi->dmi_addr;
2098 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2099 #ifdef HP100_DEBUG
2100 printk("hp100: %s: multicast = %02x:%02x:%02x:%02x:%02x:%02x, ",
2101 dev->name, addrs[0], addrs[1], addrs[2],
2102 addrs[3], addrs[4], addrs[5]);
2103 #endif
2104 for (j = idx = 0; j < 6; j++) {
2105 idx ^= *addrs++ & 0x3f;
2106 printk(":%02x:", idx);
2107 }
2108 #ifdef HP100_DEBUG
2109 printk("idx = %i\n", idx);
2110 #endif
2111 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2112 }
2113 }
2114 }
2115 #else
2116 memset(&lp->hash_bytes, 0xff, 8);
2117 #endif
2118 } else {
2119 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2120 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2121 memset(&lp->hash_bytes, 0x00, 8);
2122 }
2123
2124 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2125 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2126 int i;
2127
2128 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2129 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2130 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2131
2132 hp100_page(MAC_ADDRESS);
2133 for (i = 0; i < 8; i++)
2134 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2135 #ifdef HP100_DEBUG
2136 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2137 dev->name, lp->mac1_mode, lp->mac2_mode,
2138 lp->hash_bytes[0], lp->hash_bytes[1],
2139 lp->hash_bytes[2], lp->hash_bytes[3],
2140 lp->hash_bytes[4], lp->hash_bytes[5],
2141 lp->hash_bytes[6], lp->hash_bytes[7]);
2142 #endif
2143
2144 if (lp->lan_type == HP100_LAN_100) {
2145 #ifdef HP100_DEBUG
2146 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2147 #endif
2148 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2149 }
2150 } else {
2151 int i;
2152 u_char old_hash_bytes[8];
2153
2154 hp100_page(MAC_ADDRESS);
2155 for (i = 0; i < 8; i++)
2156 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2157 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2158 for (i = 0; i < 8; i++)
2159 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2160 #ifdef HP100_DEBUG
2161 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2162 dev->name, lp->hash_bytes[0],
2163 lp->hash_bytes[1], lp->hash_bytes[2],
2164 lp->hash_bytes[3], lp->hash_bytes[4],
2165 lp->hash_bytes[5], lp->hash_bytes[6],
2166 lp->hash_bytes[7]);
2167 #endif
2168
2169 if (lp->lan_type == HP100_LAN_100) {
2170 #ifdef HP100_DEBUG
2171 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2172 #endif
2173 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2174 }
2175 }
2176 }
2177
2178 hp100_page(MAC_CTRL);
2179 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2180 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2181
2182 hp100_page(PERFORMANCE);
2183 hp100_ints_on();
2184 spin_unlock_irqrestore(&lp->lock, flags);
2185 }
2186
2187 /*
2188 * hardware interrupt handling
2189 */
2190
2191 static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs)
2192 {
2193 struct net_device *dev = (struct net_device *) dev_id;
2194 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2195
2196 int ioaddr;
2197 u_int val;
2198
2199 if (dev == NULL)
2200 return IRQ_NONE;
2201 ioaddr = dev->base_addr;
2202
2203 spin_lock(&lp->lock);
2204
2205 hp100_ints_off();
2206
2207 #ifdef HP100_DEBUG_B
2208 hp100_outw(0x4219, TRACE);
2209 #endif
2210
2211 /* hp100_page( PERFORMANCE ); */
2212 val = hp100_inw(IRQ_STATUS);
2213 #ifdef HP100_DEBUG_IRQ
2214 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2215 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2216 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2217 #endif
2218
2219 if (val == 0) { /* might be a shared interrupt */
2220 spin_unlock(&lp->lock);
2221 hp100_ints_on();
2222 return IRQ_NONE;
2223 }
2224 /* We're only interested in those interrupts we really enabled. */
2225 /* val &= hp100_inw( IRQ_MASK ); */
2226
2227 /*
2228 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2229 * is considered executed whenever the RX_PDL data structure is no longer
2230 * needed.
2231 */
2232 if (val & HP100_RX_PDL_FILL_COMPL) {
2233 if (lp->mode == 1)
2234 hp100_rx_bm(dev);
2235 else {
2236 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2237 }
2238 }
2239
2240 /*
2241 * The RX_PACKET interrupt is set, when the receive packet counter is
2242 * non zero. We use this interrupt for receiving in slave mode. In
2243 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2244 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2245 * we somehow have missed a rx_pdl_fill_compl interrupt.
2246 */
2247
2248 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2249 if (lp->mode != 1) /* non busmaster */
2250 hp100_rx(dev);
2251 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2252 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2253 hp100_rx_bm(dev);
2254 }
2255 }
2256
2257 /*
2258 * Ack. that we have noticed the interrupt and thereby allow next one.
2259 * Note that this is now done after the slave rx function, since first
2260 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2261 * on the J2573.
2262 */
2263 hp100_outw(val, IRQ_STATUS);
2264
2265 /*
2266 * RX_ERROR is set when a packet is dropped due to no memory resources on
2267 * the card or when a RCV_ERR occurs.
2268 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2269 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2270 */
2271 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2272 #ifdef HP100_DEBUG_IRQ
2273 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2274 #endif
2275 hp100_update_stats(dev);
2276 if (lp->mode == 1) {
2277 hp100_rxfill(dev);
2278 hp100_clean_txring(dev);
2279 }
2280 }
2281
2282 /*
2283 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2284 */
2285 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2286 hp100_rxfill(dev);
2287
2288 /*
2289 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2290 * is completed
2291 */
2292 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2293 hp100_clean_txring(dev);
2294
2295 /*
2296 * MISC_ERROR is set when either the LAN link goes down or a detected
2297 * bus error occurs.
2298 */
2299 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2300 #ifdef HP100_DEBUG_IRQ
2301 printk
2302 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2303 dev->name);
2304 #endif
2305 if (lp->mode == 1) {
2306 hp100_clean_txring(dev);
2307 hp100_rxfill(dev);
2308 }
2309 hp100_misc_interrupt(dev);
2310 }
2311
2312 spin_unlock(&lp->lock);
2313 hp100_ints_on();
2314 return IRQ_HANDLED;
2315 }
2316
2317 /*
2318 * some misc functions
2319 */
2320
2321 static void hp100_start_interface(struct net_device *dev)
2322 {
2323 unsigned long flags;
2324 int ioaddr = dev->base_addr;
2325 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2326
2327 #ifdef HP100_DEBUG_B
2328 hp100_outw(0x4220, TRACE);
2329 printk("hp100: %s: hp100_start_interface\n", dev->name);
2330 #endif
2331
2332 spin_lock_irqsave(&lp->lock, flags);
2333
2334 /* Ensure the adapter does not want to request an interrupt when */
2335 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2336 hp100_page(PERFORMANCE);
2337 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2338 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2339 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2340 OPTION_LSW);
2341 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2342 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2343
2344 if (lp->mode == 1) {
2345 /* Make sure BM bit is set... */
2346 hp100_page(HW_MAP);
2347 hp100_orb(HP100_BM_MASTER, BM);
2348 hp100_rxfill(dev);
2349 } else if (lp->mode == 2) {
2350 /* Enable memory mapping. Note: Don't do this when busmaster. */
2351 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2352 }
2353
2354 hp100_page(PERFORMANCE);
2355 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2356 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2357
2358 /* enable a few interrupts: */
2359 if (lp->mode == 1) { /* busmaster mode */
2360 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2361 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2362 /* HP100_RX_PACKET | */
2363 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2364 /* HP100_TX_PDA_ZERO | */
2365 HP100_TX_COMPLETE |
2366 /* HP100_MISC_ERROR | */
2367 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2368 } else {
2369 hp100_outw(HP100_RX_PACKET |
2370 HP100_RX_ERROR | HP100_SET_HB |
2371 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2372 }
2373
2374 /* Note : before hp100_set_multicast_list(), because it will play with
2375 * spinlock itself... Jean II */
2376 spin_unlock_irqrestore(&lp->lock, flags);
2377
2378 /* Enable MAC Tx and RX, set MAC modes, ... */
2379 hp100_set_multicast_list(dev);
2380 }
2381
2382 static void hp100_stop_interface(struct net_device *dev)
2383 {
2384 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2385 int ioaddr = dev->base_addr;
2386 u_int val;
2387
2388 #ifdef HP100_DEBUG_B
2389 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2390 hp100_outw(0x4221, TRACE);
2391 #endif
2392
2393 if (lp->mode == 1)
2394 hp100_BM_shutdown(dev);
2395 else {
2396 /* Note: MMAP_DIS will be reenabled by start_interface */
2397 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2398 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2399 OPTION_LSW);
2400 val = hp100_inw(OPTION_LSW);
2401
2402 hp100_page(MAC_CTRL);
2403 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2404
2405 if (!(val & HP100_HW_RST))
2406 return; /* If reset, imm. return ... */
2407 /* ... else: busy wait until idle */
2408 for (val = 0; val < 6000; val++)
2409 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2410 hp100_page(PERFORMANCE);
2411 return;
2412 }
2413 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2414 hp100_page(PERFORMANCE);
2415 }
2416 }
2417
2418 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2419 {
2420 int i;
2421 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2422
2423 #ifdef HP100_DEBUG_B
2424 hp100_outw(0x4222, TRACE);
2425 #endif
2426
2427 hp100_page(EEPROM_CTRL);
2428 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2429 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2430 for (i = 0; i < 10000; i++)
2431 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2432 return;
2433 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2434 }
2435
2436 /* Sense connection status.
2437 * return values: LAN_10 - Connected to 10Mbit/s network
2438 * LAN_100 - Connected to 100Mbit/s network
2439 * LAN_ERR - not connected or 100Mbit/s Hub down
2440 */
2441 static int hp100_sense_lan(struct net_device *dev)
2442 {
2443 int ioaddr = dev->base_addr;
2444 u_short val_VG, val_10;
2445 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2446
2447 #ifdef HP100_DEBUG_B
2448 hp100_outw(0x4223, TRACE);
2449 #endif
2450
2451 hp100_page(MAC_CTRL);
2452 val_10 = hp100_inb(10_LAN_CFG_1);
2453 val_VG = hp100_inb(VG_LAN_CFG_1);
2454 hp100_page(PERFORMANCE);
2455 #ifdef HP100_DEBUG
2456 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2457 dev->name, val_VG, val_10);
2458 #endif
2459
2460 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2461 return HP100_LAN_10;
2462
2463 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2464 /*
2465 * This can be overriden by dos utility, so if this has no effect,
2466 * perhaps you need to download that utility from HP and set card
2467 * back to "auto detect".
2468 */
2469 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2470 hp100_page(MAC_CTRL);
2471 hp100_outb(val_10, 10_LAN_CFG_1);
2472 hp100_page(PERFORMANCE);
2473 return HP100_LAN_COAX;
2474 }
2475
2476 /* Those cards don't have a 100 Mbit connector */
2477 if ( !strcmp(lp->id, "HWP1920") ||
2478 (lp->pci_dev &&
2479 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2480 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2481 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2482 return HP100_LAN_ERR;
2483
2484 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2485 return HP100_LAN_100;
2486 return HP100_LAN_ERR;
2487 }
2488
2489 static int hp100_down_vg_link(struct net_device *dev)
2490 {
2491 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2492 int ioaddr = dev->base_addr;
2493 unsigned long time;
2494 long savelan, newlan;
2495
2496 #ifdef HP100_DEBUG_B
2497 hp100_outw(0x4224, TRACE);
2498 printk("hp100: %s: down_vg_link\n", dev->name);
2499 #endif
2500
2501 hp100_page(MAC_CTRL);
2502 time = jiffies + (HZ / 4);
2503 do {
2504 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2505 break;
2506 if (!in_interrupt()) {
2507 set_current_state(TASK_INTERRUPTIBLE);
2508 schedule_timeout(1);
2509 }
2510 } while (time_after(time, jiffies));
2511
2512 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2513 return 0;
2514
2515 /* Drop the VG Link by clearing the link up cmd and load addr. */
2516
2517 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2518 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2519
2520 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2521 time = jiffies + (HZ / 2);
2522 do {
2523 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2524 break;
2525 if (!in_interrupt()) {
2526 set_current_state(TASK_INTERRUPTIBLE);
2527 schedule_timeout(1);
2528 }
2529 } while (time_after(time, jiffies));
2530
2531 #ifdef HP100_DEBUG
2532 if (time_after_eq(jiffies, time))
2533 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2534 #endif
2535
2536 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2537 /* logout under traffic (even though all the status bits are cleared), */
2538 /* do this workaround to get the Rev 1 MAC in its idle state */
2539 if (lp->chip == HP100_CHIPID_LASSEN) {
2540 /* Reset VG MAC to insure it leaves the logoff state even if */
2541 /* the Hub is still emitting tones */
2542 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2543 udelay(1500); /* wait for >1ms */
2544 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2545 udelay(1500);
2546 }
2547
2548 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2549 /* to get the VG mac to full reset. This is not req.d with later chips */
2550 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2551 /* selected again! This will be left to the connect hub function to */
2552 /* perform if desired. */
2553 if (lp->chip == HP100_CHIPID_LASSEN) {
2554 /* Have to write to 10 and 100VG control registers simultaneously */
2555 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2556 newlan &= ~(HP100_VG_SEL << 16);
2557 newlan |= (HP100_DOT3_MAC) << 8;
2558 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2559 hp100_outl(newlan, 10_LAN_CFG_1);
2560
2561 /* Conditionally stall for 5sec on VG selected. */
2562 time = jiffies + (HZ * 5);
2563 do {
2564 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2565 break;
2566 if (!in_interrupt()) {
2567 set_current_state(TASK_INTERRUPTIBLE);
2568 schedule_timeout(1);
2569 }
2570 } while (time_after(time, jiffies));
2571
2572 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2573 hp100_outl(savelan, 10_LAN_CFG_1);
2574 }
2575
2576 time = jiffies + (3 * HZ); /* Timeout 3s */
2577 do {
2578 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2579 break;
2580 if (!in_interrupt()) {
2581 set_current_state(TASK_INTERRUPTIBLE);
2582 schedule_timeout(1);
2583 }
2584 } while (time_after(time, jiffies));
2585
2586 if (time_before_eq(time, jiffies)) {
2587 #ifdef HP100_DEBUG
2588 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2589 #endif
2590 return -EIO;
2591 }
2592
2593 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2594 do {
2595 if (!in_interrupt()) {
2596 set_current_state(TASK_INTERRUPTIBLE);
2597 schedule_timeout(1);
2598 }
2599 } while (time_after(time, jiffies));
2600
2601 return 0;
2602 }
2603
2604 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2605 {
2606 int ioaddr = dev->base_addr;
2607 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2608 u_short val = 0;
2609 unsigned long time;
2610 int startst;
2611
2612 #ifdef HP100_DEBUG_B
2613 hp100_outw(0x4225, TRACE);
2614 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2615 #endif
2616
2617 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2618 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2619 * promiscuous mode change)
2620 */
2621 hp100_page(MAC_CTRL);
2622 startst = hp100_inb(VG_LAN_CFG_1);
2623 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2624 #ifdef HP100_DEBUG_TRAINING
2625 printk("hp100: %s: Start training\n", dev->name);
2626 #endif
2627
2628 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2629 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2630
2631 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2632 /* entry then temporarily put them into force 100Mbit mode */
2633 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2634 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2635
2636 /* Drop the VG link by zeroing Link Up Command and Load Address */
2637 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2638
2639 #ifdef HP100_DEBUG_TRAINING
2640 printk("hp100: %s: Bring down the link\n", dev->name);
2641 #endif
2642
2643 /* Wait for link to drop */
2644 time = jiffies + (HZ / 10);
2645 do {
2646 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2647 break;
2648 if (!in_interrupt()) {
2649 set_current_state(TASK_INTERRUPTIBLE);
2650 schedule_timeout(1);
2651 }
2652 } while (time_after(time, jiffies));
2653
2654 /* Start an addressed training and optionally request promiscuous port */
2655 if ((dev->flags) & IFF_PROMISC) {
2656 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2657 if (lp->chip == HP100_CHIPID_LASSEN)
2658 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2659 } else {
2660 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2661 /* For ETR parts we need to reset the prom. bit in the training
2662 * register, otherwise promiscious mode won't be disabled.
2663 */
2664 if (lp->chip == HP100_CHIPID_LASSEN) {
2665 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2666 }
2667 }
2668
2669 /* With ETR parts, frame format request bits can be set. */
2670 if (lp->chip == HP100_CHIPID_LASSEN)
2671 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2672
2673 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2674
2675 /* Note: Next wait could be omitted for Hood and earlier chips under */
2676 /* certain circumstances */
2677 /* TODO: check if hood/earlier and skip wait. */
2678
2679 /* Wait for either short timeout for VG tones or long for login */
2680 /* Wait for the card hardware to signalise link cable status ok... */
2681 hp100_page(MAC_CTRL);
2682 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2683 do {
2684 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2685 break;
2686 if (!in_interrupt()) {
2687 set_current_state(TASK_INTERRUPTIBLE);
2688 schedule_timeout(1);
2689 }
2690 } while (time_before(jiffies, time));
2691
2692 if (time_after_eq(jiffies, time)) {
2693 #ifdef HP100_DEBUG_TRAINING
2694 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2695 #endif
2696 } else {
2697 #ifdef HP100_DEBUG_TRAINING
2698 printk
2699 ("hp100: %s: HUB tones detected. Trying to train.\n",
2700 dev->name);
2701 #endif
2702
2703 time = jiffies + (2 * HZ); /* again a timeout */
2704 do {
2705 val = hp100_inb(VG_LAN_CFG_1);
2706 if ((val & (HP100_LINK_UP_ST))) {
2707 #ifdef HP100_DEBUG_TRAINING
2708 printk("hp100: %s: Passed training.\n", dev->name);
2709 #endif
2710 break;
2711 }
2712 if (!in_interrupt()) {
2713 set_current_state(TASK_INTERRUPTIBLE);
2714 schedule_timeout(1);
2715 }
2716 } while (time_after(time, jiffies));
2717 }
2718
2719 /* If LINK_UP_ST is set, then we are logged into the hub. */
2720 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2721 #ifdef HP100_DEBUG_TRAINING
2722 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2723 if (lp->chip == HP100_CHIPID_LASSEN) {
2724 val = hp100_inw(TRAIN_ALLOW);
2725 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2726 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2727 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2728 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2729 }
2730 #endif
2731 } else {
2732 /* If LINK_UP_ST is not set, login was not successful */
2733 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2734 if (lp->chip == HP100_CHIPID_LASSEN) {
2735 /* Check allowed Register to find out why there is a problem. */
2736 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2737 #ifdef HP100_DEBUG_TRAINING
2738 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2739 #endif
2740 if (val & HP100_MALLOW_ACCDENIED)
2741 printk("hp100: %s: HUB access denied.\n", dev->name);
2742 if (val & HP100_MALLOW_CONFIGURE)
2743 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2744 if (val & HP100_MALLOW_DUPADDR)
2745 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2746 }
2747 }
2748
2749 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2750 /* to auto-select mode */
2751
2752 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2753 hp100_page(MAC_CTRL);
2754 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2755 }
2756
2757 val = hp100_inb(VG_LAN_CFG_1);
2758
2759 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2760 hp100_page(PERFORMANCE);
2761 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2762
2763 if (val & HP100_LINK_UP_ST)
2764 return (0); /* login was ok */
2765 else {
2766 printk("hp100: %s: Training failed.\n", dev->name);
2767 hp100_down_vg_link(dev);
2768 return -EIO;
2769 }
2770 }
2771 /* no forced relogin & already link there->no training. */
2772 return -EIO;
2773 }
2774
2775 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2776 {
2777 int ioaddr = dev->base_addr;
2778 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2779
2780 #ifdef HP100_DEBUG_B
2781 hp100_outw(0x4226, TRACE);
2782 printk("hp100: %s: cascade_reset\n", dev->name);
2783 #endif
2784
2785 if (enable) {
2786 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2787 if (lp->chip == HP100_CHIPID_LASSEN) {
2788 /* Lassen requires a PCI transmit fifo reset */
2789 hp100_page(HW_MAP);
2790 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2791 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2792 /* Wait for min. 300 ns */
2793 /* we can't use jiffies here, because it may be */
2794 /* that we have disabled the timer... */
2795 udelay(400);
2796 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2797 hp100_page(PERFORMANCE);
2798 }
2799 } else { /* bring out of reset */
2800 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2801 udelay(400);
2802 hp100_page(PERFORMANCE);
2803 }
2804 }
2805
2806 #ifdef HP100_DEBUG
2807 void hp100_RegisterDump(struct net_device *dev)
2808 {
2809 int ioaddr = dev->base_addr;
2810 int Page;
2811 int Register;
2812
2813 /* Dump common registers */
2814 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2815 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2816 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2817 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2818 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2819
2820 /* Dump paged registers */
2821 for (Page = 0; Page < 8; Page++) {
2822 /* Dump registers */
2823 printk("page: 0x%.2x\n", Page);
2824 outw(Page, ioaddr + 0x02);
2825 for (Register = 0x8; Register < 0x22; Register += 2) {
2826 /* Display Register contents except data port */
2827 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2828 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2829 }
2830 }
2831 }
2832 hp100_page(PERFORMANCE);
2833 }
2834 #endif
2835
2836
2837 static void cleanup_dev(struct net_device *d)
2838 {
2839 struct hp100_private *p = (struct hp100_private *) d->priv;
2840
2841 unregister_netdev(d);
2842 release_region(d->base_addr, HP100_REGION_SIZE);
2843
2844 if (p->mode == 1) /* busmaster */
2845 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2846 p->page_vaddr_algn,
2847 virt_to_whatever(d, p->page_vaddr_algn));
2848 if (p->mem_ptr_virt)
2849 iounmap(p->mem_ptr_virt);
2850
2851 free_netdev(d);
2852 }
2853
2854 #ifdef CONFIG_EISA
2855 static int __init hp100_eisa_probe (struct device *gendev)
2856 {
2857 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2858 struct eisa_device *edev = to_eisa_device(gendev);
2859 int err;
2860
2861 if (!dev)
2862 return -ENOMEM;
2863
2864 SET_MODULE_OWNER(dev);
2865 SET_NETDEV_DEV(dev, &edev->dev);
2866
2867 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2868 if (err)
2869 goto out1;
2870
2871 err = register_netdev(dev);
2872 if (err)
2873 goto out2;
2874
2875 #ifdef HP100_DEBUG
2876 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2877 dev->base_addr);
2878 #endif
2879 gendev->driver_data = dev;
2880 return 0;
2881 out2:
2882 release_region(dev->base_addr, HP100_REGION_SIZE);
2883 out1:
2884 free_netdev(dev);
2885 return err;
2886 }
2887
2888 static int __devexit hp100_eisa_remove (struct device *gendev)
2889 {
2890 struct net_device *dev = gendev->driver_data;
2891 cleanup_dev(dev);
2892 return 0;
2893 }
2894
2895 static struct eisa_driver hp100_eisa_driver = {
2896 .id_table = hp100_eisa_tbl,
2897 .driver = {
2898 .name = "hp100",
2899 .probe = hp100_eisa_probe,
2900 .remove = __devexit_p (hp100_eisa_remove),
2901 }
2902 };
2903 #endif
2904
2905 #ifdef CONFIG_PCI
2906 static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2907 const struct pci_device_id *ent)
2908 {
2909 struct net_device *dev;
2910 int ioaddr;
2911 u_short pci_command;
2912 int err;
2913
2914 if (pci_enable_device(pdev))
2915 return -ENODEV;
2916
2917 dev = alloc_etherdev(sizeof(struct hp100_private));
2918 if (!dev) {
2919 err = -ENOMEM;
2920 goto out0;
2921 }
2922
2923 SET_MODULE_OWNER(dev);
2924 SET_NETDEV_DEV(dev, &pdev->dev);
2925
2926 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2927 if (!(pci_command & PCI_COMMAND_IO)) {
2928 #ifdef HP100_DEBUG
2929 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2930 #endif
2931 pci_command |= PCI_COMMAND_IO;
2932 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2933 }
2934
2935 if (!(pci_command & PCI_COMMAND_MASTER)) {
2936 #ifdef HP100_DEBUG
2937 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2938 #endif
2939 pci_command |= PCI_COMMAND_MASTER;
2940 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2941 }
2942
2943 ioaddr = pci_resource_start(pdev, 0);
2944 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2945 if (err)
2946 goto out1;
2947 err = register_netdev(dev);
2948 if (err)
2949 goto out2;
2950
2951 #ifdef HP100_DEBUG
2952 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2953 #endif
2954 pci_set_drvdata(pdev, dev);
2955 return 0;
2956 out2:
2957 release_region(dev->base_addr, HP100_REGION_SIZE);
2958 out1:
2959 free_netdev(dev);
2960 out0:
2961 pci_disable_device(pdev);
2962 return err;
2963 }
2964
2965 static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2966 {
2967 struct net_device *dev = pci_get_drvdata(pdev);
2968
2969 cleanup_dev(dev);
2970 pci_disable_device(pdev);
2971 }
2972
2973
2974 static struct pci_driver hp100_pci_driver = {
2975 .name = "hp100",
2976 .id_table = hp100_pci_tbl,
2977 .probe = hp100_pci_probe,
2978 .remove = __devexit_p(hp100_pci_remove),
2979 };
2980 #endif
2981
2982 /*
2983 * module section
2984 */
2985
2986 MODULE_LICENSE("GPL");
2987 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, "
2988 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2989 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2990
2991 /*
2992 * Note: to register three isa devices, use:
2993 * option hp100 hp100_port=0,0,0
2994 * to register one card at io 0x280 as eth239, use:
2995 * option hp100 hp100_port=0x280
2996 */
2997 #if defined(MODULE) && defined(CONFIG_ISA)
2998 #define HP100_DEVICES 5
2999 /* Parameters set by insmod */
3000 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
3001 MODULE_PARM(hp100_port, "1-" __MODULE_STRING(HP100_DEVICES) "i");
3002
3003 /* List of devices */
3004 static struct net_device *hp100_devlist[HP100_DEVICES];
3005
3006 static int __init hp100_isa_init(void)
3007 {
3008 struct net_device *dev;
3009 int i, err, cards = 0;
3010
3011 /* Don't autoprobe ISA bus */
3012 if (hp100_port[0] == 0)
3013 return -ENODEV;
3014
3015 /* Loop on all possible base addresses */
3016 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
3017 dev = alloc_etherdev(sizeof(struct hp100_private));
3018 if (!dev) {
3019 printk(KERN_WARNING "hp100: no memory for network device\n");
3020 while (cards > 0)
3021 cleanup_dev(hp100_devlist[--cards]);
3022
3023 return -ENOMEM;
3024 }
3025 SET_MODULE_OWNER(dev);
3026
3027 err = hp100_isa_probe(dev, hp100_port[i]);
3028 if (!err) {
3029 err = register_netdev(dev);
3030 if (!err)
3031 hp100_devlist[cards++] = dev;
3032 else
3033 release_region(dev->base_addr, HP100_REGION_SIZE);
3034 }
3035
3036 if (err)
3037 free_netdev(dev);
3038 }
3039
3040 return cards > 0 ? 0 : -ENODEV;
3041 }
3042
3043 static void __exit hp100_isa_cleanup(void)
3044 {
3045 int i;
3046
3047 for (i = 0; i < HP100_DEVICES; i++) {
3048 struct net_device *dev = hp100_devlist[i];
3049 if (dev)
3050 cleanup_dev(dev);
3051 }
3052 }
3053 #else
3054 #define hp100_isa_init() (0)
3055 #define hp100_isa_cleanup() do { } while(0)
3056 #endif
3057
3058 static int __init hp100_module_init(void)
3059 {
3060 int err;
3061
3062 err = hp100_isa_init();
3063 if (err && err != -ENODEV)
3064 goto out;
3065 #ifdef CONFIG_EISA
3066 err = eisa_driver_register(&hp100_eisa_driver);
3067 if (err && err != -ENODEV)
3068 goto out2;
3069 #endif
3070 #ifdef CONFIG_PCI
3071 err = pci_module_init(&hp100_pci_driver);
3072 if (err && err != -ENODEV)
3073 goto out3;
3074 #endif
3075 out:
3076 return err;
3077 out3:
3078 #ifdef CONFIG_EISA
3079 eisa_driver_unregister (&hp100_eisa_driver);
3080 out2:
3081 #endif
3082 hp100_isa_cleanup();
3083 goto out;
3084 }
3085
3086
3087 static void __exit hp100_module_exit(void)
3088 {
3089 hp100_isa_cleanup();
3090 #ifdef CONFIG_EISA
3091 eisa_driver_unregister (&hp100_eisa_driver);
3092 #endif
3093 #ifdef CONFIG_PCI
3094 pci_unregister_driver (&hp100_pci_driver);
3095 #endif
3096 }
3097
3098 module_init(hp100_module_init)
3099 module_exit(hp100_module_exit)
3100
3101
3102 /*
3103 * Local variables:
3104 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"
3105 * c-indent-level: 2
3106 * tab-width: 8
3107 * End:
3108 */
MOXA 2.6.9 from sdlinux-moxaart.tgz