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[PATCH] W1: w1_netlink: New init/fini netlink callbacks.
[linux-2.6/verdex.git] / drivers / net / hp100.c
blobcf0ac6fda1a1741390486e2168271cf3fc4ba554
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 J2970A 10 Mbit/s PCI Combo 10base-T/BNC
17 ** -- HP J2973A 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/dma-mapping.h>
110 #include <linux/spinlock.h>
111 #include <linux/netdevice.h>
112 #include <linux/etherdevice.h>
113 #include <linux/skbuff.h>
114 #include <linux/types.h>
115 #include <linux/config.h> /* for CONFIG_PCI */
116 #include <linux/delay.h>
117 #include <linux/init.h>
118 #include <linux/bitops.h>
119
120 #include <asm/io.h>
121
122 #include "hp100.h"
123
124 /*
125 * defines
126 */
127
128 #define HP100_BUS_ISA 0
129 #define HP100_BUS_EISA 1
130 #define HP100_BUS_PCI 2
131
132 #define HP100_REGION_SIZE 0x20 /* for ioports */
133 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
134
135 #define HP100_MAX_PACKET_SIZE (1536+4)
136 #define HP100_MIN_PACKET_SIZE 60
137
138 #ifndef HP100_DEFAULT_RX_RATIO
139 /* default - 75% onboard memory on the card are used for RX packets */
140 #define HP100_DEFAULT_RX_RATIO 75
141 #endif
142
143 #ifndef HP100_DEFAULT_PRIORITY_TX
144 /* default - don't enable transmit outgoing packets as priority */
145 #define HP100_DEFAULT_PRIORITY_TX 0
146 #endif
147
148 /*
149 * structures
150 */
151
152 struct hp100_private {
153 spinlock_t lock;
154 char id[HP100_SIG_LEN];
155 u_short chip;
156 u_short soft_model;
157 u_int memory_size;
158 u_int virt_memory_size;
159 u_short rx_ratio; /* 1 - 99 */
160 u_short priority_tx; /* != 0 - priority tx */
161 u_short mode; /* PIO, Shared Mem or Busmaster */
162 u_char bus;
163 struct pci_dev *pci_dev;
164 short mem_mapped; /* memory mapped access */
165 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
166 unsigned long mem_ptr_phys; /* physical memory mapped area */
167 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
168 int hub_status; /* was login to hub successful? */
169 u_char mac1_mode;
170 u_char mac2_mode;
171 u_char hash_bytes[8];
172 struct net_device_stats stats;
173
174 /* Rings for busmaster mode: */
175 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
176 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
177 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
178 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
179
180 hp100_ring_t rxring[MAX_RX_PDL];
181 hp100_ring_t txring[MAX_TX_PDL];
182
183 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
184 u_long whatever_offset; /* Offset to bus/phys/dma address */
185 int rxrcommit; /* # Rx PDLs commited to adapter */
186 int txrcommit; /* # Tx PDLs commited to adapter */
187 };
188
189 /*
190 * variables
191 */
192 static const char *hp100_isa_tbl[] = {
193 "HWPF150", /* HP J2573 rev A */
194 "HWP1950", /* HP J2573 */
195 };
196
197 #ifdef CONFIG_EISA
198 static struct eisa_device_id hp100_eisa_tbl[] = {
199 { "HWPF180" }, /* HP J2577 rev A */
200 { "HWP1920" }, /* HP 27248B */
201 { "HWP1940" }, /* HP J2577 */
202 { "HWP1990" }, /* HP J2577 */
203 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
204 { "CPX0401" }, /* FreedomLine 100/VG */
205 { "" } /* Mandatory final entry ! */
206 };
207 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
208 #endif
209
210 #ifdef CONFIG_PCI
211 static struct pci_device_id hp100_pci_tbl[] = {
212 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
217 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
218 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
219 {} /* Terminating entry */
220 };
221 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
222 #endif
223
224 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
225 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
226 static int hp100_mode = 1;
227
228 module_param(hp100_rx_ratio, int, 0);
229 module_param(hp100_priority_tx, int, 0);
230 module_param(hp100_mode, int, 0);
231
232 /*
233 * prototypes
234 */
235
236 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
237 struct pci_dev *pci_dev);
238
239
240 static int hp100_open(struct net_device *dev);
241 static int hp100_close(struct net_device *dev);
242 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
243 static int hp100_start_xmit_bm(struct sk_buff *skb,
244 struct net_device *dev);
245 static void hp100_rx(struct net_device *dev);
246 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
247 static void hp100_misc_interrupt(struct net_device *dev);
248 static void hp100_update_stats(struct net_device *dev);
249 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
250 static void hp100_set_multicast_list(struct net_device *dev);
251 static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs);
252 static void hp100_start_interface(struct net_device *dev);
253 static void hp100_stop_interface(struct net_device *dev);
254 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
255 static int hp100_sense_lan(struct net_device *dev);
256 static int hp100_login_to_vg_hub(struct net_device *dev,
257 u_short force_relogin);
258 static int hp100_down_vg_link(struct net_device *dev);
259 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
260 static void hp100_BM_shutdown(struct net_device *dev);
261 static void hp100_mmuinit(struct net_device *dev);
262 static void hp100_init_pdls(struct net_device *dev);
263 static int hp100_init_rxpdl(struct net_device *dev,
264 register hp100_ring_t * ringptr,
265 register u_int * pdlptr);
266 static int hp100_init_txpdl(struct net_device *dev,
267 register hp100_ring_t * ringptr,
268 register u_int * pdlptr);
269 static void hp100_rxfill(struct net_device *dev);
270 static void hp100_hwinit(struct net_device *dev);
271 static void hp100_clean_txring(struct net_device *dev);
272 #ifdef HP100_DEBUG
273 static void hp100_RegisterDump(struct net_device *dev);
274 #endif
275
276 /* Conversion to new PCI API :
277 * Convert an address in a kernel buffer to a bus/phys/dma address.
278 * This work *only* for memory fragments part of lp->page_vaddr,
279 * because it was properly DMA allocated via pci_alloc_consistent(),
280 * so we just need to "retreive" the original mapping to bus/phys/dma
281 * address - Jean II */
282 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
283 {
284 struct hp100_private *lp = netdev_priv(dev);
285 return ((u_long) ptr) + lp->whatever_offset;
286 }
287
288 static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
289 {
290 return pci_map_single(lp->pci_dev, data,
291 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
292 }
293
294 /* TODO: This function should not really be needed in a good design... */
295 static void wait(void)
296 {
297 mdelay(1);
298 }
299
300 /*
301 * probe functions
302 * These functions should - if possible - avoid doing write operations
303 * since this could cause problems when the card is not installed.
304 */
305
306 /*
307 * Read board id and convert to string.
308 * Effectively same code as decode_eisa_sig
309 */
310 static __devinit const char *hp100_read_id(int ioaddr)
311 {
312 int i;
313 static char str[HP100_SIG_LEN];
314 unsigned char sig[4], sum;
315 unsigned short rev;
316
317 hp100_page(ID_MAC_ADDR);
318 sum = 0;
319 for (i = 0; i < 4; i++) {
320 sig[i] = hp100_inb(BOARD_ID + i);
321 sum += sig[i];
322 }
323
324 sum += hp100_inb(BOARD_ID + i);
325 if (sum != 0xff)
326 return NULL; /* bad checksum */
327
328 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
329 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
330 str[2] = (sig[1] & 0x1f) + ('A' - 1);
331 rev = (sig[2] << 8) | sig[3];
332 sprintf(str + 3, "%04X", rev);
333
334 return str;
335 }
336
337 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
338 {
339 const char *sig;
340 int i;
341
342 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
343 goto err;
344
345 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
346 release_region(ioaddr, HP100_REGION_SIZE);
347 goto err;
348 }
349
350 sig = hp100_read_id(ioaddr);
351 release_region(ioaddr, HP100_REGION_SIZE);
352
353 if (sig == NULL)
354 goto err;
355
356 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
357 if (!strcmp(hp100_isa_tbl[i], sig))
358 break;
359
360 }
361
362 if (i < ARRAY_SIZE(hp100_isa_tbl))
363 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
364 err:
365 return -ENODEV;
366
367 }
368 /*
369 * Probe for ISA board.
370 * EISA and PCI are handled by device infrastructure.
371 */
372
373 static int __init hp100_isa_probe(struct net_device *dev, int addr)
374 {
375 int err = -ENODEV;
376
377 /* Probe for a specific ISA address */
378 if (addr > 0xff && addr < 0x400)
379 err = hp100_isa_probe1(dev, addr);
380
381 else if (addr != 0)
382 err = -ENXIO;
383
384 else {
385 /* Probe all ISA possible port regions */
386 for (addr = 0x100; addr < 0x400; addr += 0x20) {
387 err = hp100_isa_probe1(dev, addr);
388 if (!err)
389 break;
390 }
391 }
392 return err;
393 }
394
395
396 #ifndef MODULE
397 struct net_device * __init hp100_probe(int unit)
398 {
399 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
400 int err;
401
402 if (!dev)
403 return ERR_PTR(-ENODEV);
404
405 SET_MODULE_OWNER(dev);
406
407 #ifdef HP100_DEBUG_B
408 hp100_outw(0x4200, TRACE);
409 printk("hp100: %s: probe\n", dev->name);
410 #endif
411
412 if (unit >= 0) {
413 sprintf(dev->name, "eth%d", unit);
414 netdev_boot_setup_check(dev);
415 }
416
417 err = hp100_isa_probe(dev, dev->base_addr);
418 if (err)
419 goto out;
420
421 return dev;
422 out:
423 free_netdev(dev);
424 return ERR_PTR(err);
425 }
426 #endif
427
428 static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
429 u_char bus, struct pci_dev *pci_dev)
430 {
431 int i;
432 int err = -ENODEV;
433 const char *eid;
434 u_int chip;
435 u_char uc;
436 u_int memory_size = 0, virt_memory_size = 0;
437 u_short local_mode, lsw;
438 short mem_mapped;
439 unsigned long mem_ptr_phys;
440 void __iomem *mem_ptr_virt;
441 struct hp100_private *lp;
442
443 #ifdef HP100_DEBUG_B
444 hp100_outw(0x4201, TRACE);
445 printk("hp100: %s: probe1\n", dev->name);
446 #endif
447
448 /* memory region for programmed i/o */
449 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
450 goto out1;
451
452 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
453 goto out2;
454
455 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
456 #ifdef HP100_DEBUG
457 if (chip == HP100_CHIPID_SHASTA)
458 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
459 else if (chip == HP100_CHIPID_RAINIER)
460 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
461 else if (chip == HP100_CHIPID_LASSEN)
462 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
463 else
464 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
465 #endif
466
467 dev->base_addr = ioaddr;
468
469 eid = hp100_read_id(ioaddr);
470 if (eid == NULL) { /* bad checksum? */
471 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
472 goto out2;
473 }
474
475 hp100_page(ID_MAC_ADDR);
476 for (i = uc = 0; i < 7; i++)
477 uc += hp100_inb(LAN_ADDR + i);
478 if (uc != 0xff) {
479 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
480 err = -EIO;
481 goto out2;
482 }
483
484 /* Make sure, that all registers are correctly updated... */
485
486 hp100_load_eeprom(dev, ioaddr);
487 wait();
488
489 /*
490 * Determine driver operation mode
491 *
492 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
493 * force driver modes:
494 * hp100_mode=1 -> default, use busmaster mode if configured.
495 * hp100_mode=2 -> enable shared memory mode
496 * hp100_mode=3 -> force use of i/o mapped mode.
497 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
498 */
499
500 /*
501 * LSW values:
502 * 0x2278 -> J2585B, PnP shared memory mode
503 * 0x2270 -> J2585B, shared memory mode, 0xdc000
504 * 0xa23c -> J2585B, I/O mapped mode
505 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
506 * 0x2220 -> EISA HP, I/O (Shasta Chip)
507 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
508 */
509
510 #if 0
511 local_mode = 0x2270;
512 hp100_outw(0xfefe, OPTION_LSW);
513 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
514 #endif
515
516 /* hp100_mode value maybe used in future by another card */
517 local_mode = hp100_mode;
518 if (local_mode < 1 || local_mode > 4)
519 local_mode = 1; /* default */
520 #ifdef HP100_DEBUG
521 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
522 hp100_inw(OPTION_LSW));
523 #endif
524
525 if (local_mode == 3) {
526 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
527 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
528 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
529 printk("hp100: IO mapped mode forced.\n");
530 } else if (local_mode == 2) {
531 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
532 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
533 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
534 printk("hp100: Shared memory mode requested.\n");
535 } else if (local_mode == 4) {
536 if (chip == HP100_CHIPID_LASSEN) {
537 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
538 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
539 printk("hp100: Busmaster mode requested.\n");
540 }
541 local_mode = 1;
542 }
543
544 if (local_mode == 1) { /* default behaviour */
545 lsw = hp100_inw(OPTION_LSW);
546
547 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
548 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
549 #ifdef HP100_DEBUG
550 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
551 #endif
552 local_mode = 3;
553 } else if (chip == HP100_CHIPID_LASSEN &&
554 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
555 /* Conversion to new PCI API :
556 * I don't have the doc, but I assume that the card
557 * can map the full 32bit address space.
558 * Also, we can have EISA Busmaster cards (not tested),
559 * so beware !!! - Jean II */
560 if((bus == HP100_BUS_PCI) &&
561 (pci_set_dma_mask(pci_dev, DMA_32BIT_MASK))) {
562 /* Gracefully fallback to shared memory */
563 goto busmasterfail;
564 }
565 printk("hp100: Busmaster mode enabled.\n");
566 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
567 } else {
568 busmasterfail:
569 #ifdef HP100_DEBUG
570 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
571 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
572 #endif
573 /* In this case, try shared memory mode */
574 local_mode = 2;
575 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
576 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
577 }
578 }
579 #ifdef HP100_DEBUG
580 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
581 #endif
582
583 /* Check for shared memory on the card, eventually remap it */
584 hp100_page(HW_MAP);
585 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
586 mem_ptr_phys = 0UL;
587 mem_ptr_virt = NULL;
588 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
589 virt_memory_size = 0;
590
591 /* For memory mapped or busmaster mode, we want the memory address */
592 if (mem_mapped || (local_mode == 1)) {
593 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
594 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
595
596 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
597 printk("hp100: Can only use programmed i/o mode.\n");
598 mem_ptr_phys = 0;
599 mem_mapped = 0;
600 local_mode = 3; /* Use programmed i/o */
601 }
602
603 /* We do not need access to shared memory in busmaster mode */
604 /* However in slave mode we need to remap high (>1GB) card memory */
605 if (local_mode != 1) { /* = not busmaster */
606 /* We try with smaller memory sizes, if ioremap fails */
607 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
608 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
609 #ifdef HP100_DEBUG
610 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
611 #endif
612 } else {
613 #ifdef HP100_DEBUG
614 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);
615 #endif
616 break;
617 }
618 }
619
620 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
621 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
622 local_mode = 3;
623 virt_memory_size = 0;
624 }
625 }
626 }
627
628 if (local_mode == 3) { /* io mapped forced */
629 mem_mapped = 0;
630 mem_ptr_phys = 0;
631 mem_ptr_virt = NULL;
632 printk("hp100: Using (slow) programmed i/o mode.\n");
633 }
634
635 /* Initialise the "private" data structure for this card. */
636 lp = netdev_priv(dev);
637
638 spin_lock_init(&lp->lock);
639 strlcpy(lp->id, eid, HP100_SIG_LEN);
640 lp->chip = chip;
641 lp->mode = local_mode;
642 lp->bus = bus;
643 lp->pci_dev = pci_dev;
644 lp->priority_tx = hp100_priority_tx;
645 lp->rx_ratio = hp100_rx_ratio;
646 lp->mem_ptr_phys = mem_ptr_phys;
647 lp->mem_ptr_virt = mem_ptr_virt;
648 hp100_page(ID_MAC_ADDR);
649 lp->soft_model = hp100_inb(SOFT_MODEL);
650 lp->mac1_mode = HP100_MAC1MODE3;
651 lp->mac2_mode = HP100_MAC2MODE3;
652 memset(&lp->hash_bytes, 0x00, 8);
653
654 dev->base_addr = ioaddr;
655
656 lp->memory_size = memory_size;
657 lp->virt_memory_size = virt_memory_size;
658 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
659
660 dev->open = hp100_open;
661 dev->stop = hp100_close;
662
663 if (lp->mode == 1) /* busmaster */
664 dev->hard_start_xmit = hp100_start_xmit_bm;
665 else
666 dev->hard_start_xmit = hp100_start_xmit;
667
668 dev->get_stats = hp100_get_stats;
669 dev->set_multicast_list = &hp100_set_multicast_list;
670
671 /* Ask the card for which IRQ line it is configured */
672 if (bus == HP100_BUS_PCI) {
673 dev->irq = pci_dev->irq;
674 } else {
675 hp100_page(HW_MAP);
676 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
677 if (dev->irq == 2)
678 dev->irq = 9;
679 }
680
681 if (lp->mode == 1) /* busmaster */
682 dev->dma = 4;
683
684 /* Ask the card for its MAC address and store it for later use. */
685 hp100_page(ID_MAC_ADDR);
686 for (i = uc = 0; i < 6; i++)
687 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
688
689 /* Reset statistics (counters) */
690 hp100_clear_stats(lp, ioaddr);
691
692 /* If busmaster mode is wanted, a dma-capable memory area is needed for
693 * the rx and tx PDLs
694 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
695 * needed for the allocation of the memory area.
696 */
697
698 /* TODO: We do not need this with old cards, where PDLs are stored
699 * in the cards shared memory area. But currently, busmaster has been
700 * implemented/tested only with the lassen chip anyway... */
701 if (lp->mode == 1) { /* busmaster */
702 dma_addr_t page_baddr;
703 /* Get physically continous memory for TX & RX PDLs */
704 /* Conversion to new PCI API :
705 * Pages are always aligned and zeroed, no need to it ourself.
706 * Doc says should be OK for EISA bus as well - Jean II */
707 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
708 err = -ENOMEM;
709 goto out2;
710 }
711 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
712
713 #ifdef HP100_DEBUG_BM
714 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);
715 #endif
716 lp->rxrcommit = lp->txrcommit = 0;
717 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
718 lp->txrhead = lp->txrtail = &(lp->txring[0]);
719 }
720
721 /* Initialise the card. */
722 /* (I'm not really sure if it's a good idea to do this during probing, but
723 * like this it's assured that the lan connection type can be sensed
724 * correctly)
725 */
726 hp100_hwinit(dev);
727
728 /* Try to find out which kind of LAN the card is connected to. */
729 lp->lan_type = hp100_sense_lan(dev);
730
731 /* Print out a message what about what we think we have probed. */
732 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
733 switch (bus) {
734 case HP100_BUS_EISA:
735 printk("EISA");
736 break;
737 case HP100_BUS_PCI:
738 printk("PCI");
739 break;
740 default:
741 printk("ISA");
742 break;
743 }
744 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
745
746 if (lp->mode == 2) { /* memory mapped */
747 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
748 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
749 if (mem_ptr_virt)
750 printk(" (virtual base %p)", mem_ptr_virt);
751 printk(".\n");
752
753 /* Set for info when doing ifconfig */
754 dev->mem_start = mem_ptr_phys;
755 dev->mem_end = mem_ptr_phys + lp->memory_size;
756 }
757
758 printk("hp100: ");
759 if (lp->lan_type != HP100_LAN_ERR)
760 printk("Adapter is attached to ");
761 switch (lp->lan_type) {
762 case HP100_LAN_100:
763 printk("100Mb/s Voice Grade AnyLAN network.\n");
764 break;
765 case HP100_LAN_10:
766 printk("10Mb/s network (10baseT).\n");
767 break;
768 case HP100_LAN_COAX:
769 printk("10Mb/s network (coax).\n");
770 break;
771 default:
772 printk("Warning! Link down.\n");
773 }
774
775 err = register_netdev(dev);
776 if (err)
777 goto out3;
778
779 return 0;
780 out3:
781 if (local_mode == 1)
782 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
783 lp->page_vaddr_algn,
784 virt_to_whatever(dev, lp->page_vaddr_algn));
785 if (mem_ptr_virt)
786 iounmap(mem_ptr_virt);
787 out2:
788 release_region(ioaddr, HP100_REGION_SIZE);
789 out1:
790 return err;
791 }
792
793 /* This procedure puts the card into a stable init state */
794 static void hp100_hwinit(struct net_device *dev)
795 {
796 int ioaddr = dev->base_addr;
797 struct hp100_private *lp = netdev_priv(dev);
798
799 #ifdef HP100_DEBUG_B
800 hp100_outw(0x4202, TRACE);
801 printk("hp100: %s: hwinit\n", dev->name);
802 #endif
803
804 /* Initialise the card. -------------------------------------------- */
805
806 /* Clear all pending Ints and disable Ints */
807 hp100_page(PERFORMANCE);
808 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
809 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
810
811 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
812 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
813
814 if (lp->mode == 1) {
815 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
816 wait();
817 } else {
818 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
819 hp100_cascade_reset(dev, 1);
820 hp100_page(MAC_CTRL);
821 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
822 }
823
824 /* Initiate EEPROM reload */
825 hp100_load_eeprom(dev, 0);
826
827 wait();
828
829 /* Go into reset again. */
830 hp100_cascade_reset(dev, 1);
831
832 /* Set Option Registers to a safe state */
833 hp100_outw(HP100_DEBUG_EN |
834 HP100_RX_HDR |
835 HP100_EE_EN |
836 HP100_BM_WRITE |
837 HP100_BM_READ | HP100_RESET_HB |
838 HP100_FAKE_INT |
839 HP100_INT_EN |
840 HP100_MEM_EN |
841 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
842
843 hp100_outw(HP100_TRI_INT |
844 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
845
846 hp100_outb(HP100_PRIORITY_TX |
847 HP100_ADV_NXT_PKT |
848 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
849
850 /* TODO: Configure MMU for Ram Test. */
851 /* TODO: Ram Test. */
852
853 /* Re-check if adapter is still at same i/o location */
854 /* (If the base i/o in eeprom has been changed but the */
855 /* registers had not been changed, a reload of the eeprom */
856 /* would move the adapter to the address stored in eeprom */
857
858 /* TODO: Code to implement. */
859
860 /* Until here it was code from HWdiscover procedure. */
861 /* Next comes code from mmuinit procedure of SCO BM driver which is
862 * called from HWconfigure in the SCO driver. */
863
864 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
865 * multicast filter...
866 */
867 hp100_mmuinit(dev);
868
869 /* We don't turn the interrupts on here - this is done by start_interface. */
870 wait(); /* TODO: Do we really need this? */
871
872 /* Enable Hardware (e.g. unreset) */
873 hp100_cascade_reset(dev, 0);
874
875 /* ------- initialisation complete ----------- */
876
877 /* Finally try to log in the Hub if there may be a VG connection. */
878 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
879 hp100_login_to_vg_hub(dev, 0); /* relogin */
880
881 }
882 \f
883
884 /*
885 * mmuinit - Reinitialise Cascade MMU and MAC settings.
886 * Note: Must already be in reset and leaves card in reset.
887 */
888 static void hp100_mmuinit(struct net_device *dev)
889 {
890 int ioaddr = dev->base_addr;
891 struct hp100_private *lp = netdev_priv(dev);
892 int i;
893
894 #ifdef HP100_DEBUG_B
895 hp100_outw(0x4203, TRACE);
896 printk("hp100: %s: mmuinit\n", dev->name);
897 #endif
898
899 #ifdef HP100_DEBUG
900 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
901 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
902 return;
903 }
904 #endif
905
906 /* Make sure IRQs are masked off and ack'ed. */
907 hp100_page(PERFORMANCE);
908 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
909 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
910
911 /*
912 * Enable Hardware
913 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
914 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
915 * - Clear Priority, Advance Pkt and Xmit Cmd
916 */
917
918 hp100_outw(HP100_DEBUG_EN |
919 HP100_RX_HDR |
920 HP100_EE_EN | HP100_RESET_HB |
921 HP100_IO_EN |
922 HP100_FAKE_INT |
923 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
924
925 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
926
927 if (lp->mode == 1) { /* busmaster */
928 hp100_outw(HP100_BM_WRITE |
929 HP100_BM_READ |
930 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
931 } else if (lp->mode == 2) { /* memory mapped */
932 hp100_outw(HP100_BM_WRITE |
933 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
934 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
935 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
936 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
937 } else if (lp->mode == 3) { /* i/o mapped mode */
938 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
939 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
940 }
941
942 hp100_page(HW_MAP);
943 hp100_outb(0, EARLYRXCFG);
944 hp100_outw(0, EARLYTXCFG);
945
946 /*
947 * Enable Bus Master mode
948 */
949 if (lp->mode == 1) { /* busmaster */
950 /* Experimental: Set some PCI configuration bits */
951 hp100_page(HW_MAP);
952 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
953 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
954
955 /* PCI Bus failures should result in a Misc. Interrupt */
956 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
957
958 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
959 hp100_page(HW_MAP);
960 /* Use Burst Mode and switch on PAGE_CK */
961 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
962 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
963 hp100_orb(HP100_BM_PAGE_CK, BM);
964 hp100_orb(HP100_BM_MASTER, BM);
965 } else { /* not busmaster */
966
967 hp100_page(HW_MAP);
968 hp100_andb(~HP100_BM_MASTER, BM);
969 }
970
971 /*
972 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
973 */
974 hp100_page(MMU_CFG);
975 if (lp->mode == 1) { /* only needed for Busmaster */
976 int xmit_stop, recv_stop;
977
978 if ((lp->chip == HP100_CHIPID_RAINIER)
979 || (lp->chip == HP100_CHIPID_SHASTA)) {
980 int pdl_stop;
981
982 /*
983 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
984 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
985 * to the next higher 1k boundary) bytes for the rx-pdl's
986 * Note: For non-etr chips the transmit stop register must be
987 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
988 */
989 pdl_stop = lp->memory_size;
990 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
991 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
992 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
993 #ifdef HP100_DEBUG_BM
994 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
995 #endif
996 } else {
997 /* ETR chip (Lassen) in busmaster mode */
998 xmit_stop = (lp->memory_size) - 1;
999 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1000 }
1001
1002 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1003 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1004 #ifdef HP100_DEBUG_BM
1005 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1006 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1007 #endif
1008 } else {
1009 /* Slave modes (memory mapped and programmed io) */
1010 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1011 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1012 #ifdef HP100_DEBUG
1013 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1014 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1015 #endif
1016 }
1017
1018 /* Write MAC address into page 1 */
1019 hp100_page(MAC_ADDRESS);
1020 for (i = 0; i < 6; i++)
1021 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1022
1023 /* Zero the multicast hash registers */
1024 for (i = 0; i < 8; i++)
1025 hp100_outb(0x0, HASH_BYTE0 + i);
1026
1027 /* Set up MAC defaults */
1028 hp100_page(MAC_CTRL);
1029
1030 /* Go to LAN Page and zero all filter bits */
1031 /* Zero accept error, accept multicast, accept broadcast and accept */
1032 /* all directed packet bits */
1033 hp100_andb(~(HP100_RX_EN |
1034 HP100_TX_EN |
1035 HP100_ACC_ERRORED |
1036 HP100_ACC_MC |
1037 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1038
1039 hp100_outb(0x00, MAC_CFG_2);
1040
1041 /* Zero the frame format bit. This works around a training bug in the */
1042 /* new hubs. */
1043 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1044
1045 if (lp->priority_tx)
1046 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1047 else
1048 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1049
1050 hp100_outb(HP100_ADV_NXT_PKT |
1051 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1052
1053 /* If busmaster, initialize the PDLs */
1054 if (lp->mode == 1)
1055 hp100_init_pdls(dev);
1056
1057 /* Go to performance page and initalize isr and imr registers */
1058 hp100_page(PERFORMANCE);
1059 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1060 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1061 }
1062
1063 /*
1064 * open/close functions
1065 */
1066
1067 static int hp100_open(struct net_device *dev)
1068 {
1069 struct hp100_private *lp = netdev_priv(dev);
1070 #ifdef HP100_DEBUG_B
1071 int ioaddr = dev->base_addr;
1072 #endif
1073
1074 #ifdef HP100_DEBUG_B
1075 hp100_outw(0x4204, TRACE);
1076 printk("hp100: %s: open\n", dev->name);
1077 #endif
1078
1079 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1080 if (request_irq(dev->irq, hp100_interrupt,
1081 lp->bus == HP100_BUS_PCI || lp->bus ==
1082 HP100_BUS_EISA ? SA_SHIRQ : SA_INTERRUPT,
1083 "hp100", dev)) {
1084 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1085 return -EAGAIN;
1086 }
1087
1088 dev->trans_start = jiffies;
1089 netif_start_queue(dev);
1090
1091 lp->lan_type = hp100_sense_lan(dev);
1092 lp->mac1_mode = HP100_MAC1MODE3;
1093 lp->mac2_mode = HP100_MAC2MODE3;
1094 memset(&lp->hash_bytes, 0x00, 8);
1095
1096 hp100_stop_interface(dev);
1097
1098 hp100_hwinit(dev);
1099
1100 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1101
1102 return 0;
1103 }
1104
1105 /* The close function is called when the interface is to be brought down */
1106 static int hp100_close(struct net_device *dev)
1107 {
1108 int ioaddr = dev->base_addr;
1109 struct hp100_private *lp = netdev_priv(dev);
1110
1111 #ifdef HP100_DEBUG_B
1112 hp100_outw(0x4205, TRACE);
1113 printk("hp100: %s: close\n", dev->name);
1114 #endif
1115
1116 hp100_page(PERFORMANCE);
1117 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1118
1119 hp100_stop_interface(dev);
1120
1121 if (lp->lan_type == HP100_LAN_100)
1122 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1123
1124 netif_stop_queue(dev);
1125
1126 free_irq(dev->irq, dev);
1127
1128 #ifdef HP100_DEBUG
1129 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1130 hp100_inw(OPTION_LSW));
1131 #endif
1132
1133 return 0;
1134 }
1135 \f
1136
1137 /*
1138 * Configure the PDL Rx rings and LAN
1139 */
1140 static void hp100_init_pdls(struct net_device *dev)
1141 {
1142 struct hp100_private *lp = netdev_priv(dev);
1143 hp100_ring_t *ringptr;
1144 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1145 int i;
1146
1147 #ifdef HP100_DEBUG_B
1148 int ioaddr = dev->base_addr;
1149 #endif
1150
1151 #ifdef HP100_DEBUG_B
1152 hp100_outw(0x4206, TRACE);
1153 printk("hp100: %s: init pdls\n", dev->name);
1154 #endif
1155
1156 if (0 == lp->page_vaddr_algn)
1157 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1158 else {
1159 /* pageptr shall point into the DMA accessible memory region */
1160 /* we use this pointer to status the upper limit of allocated */
1161 /* memory in the allocated page. */
1162 /* note: align the pointers to the pci cache line size */
1163 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1164 pageptr = lp->page_vaddr_algn;
1165
1166 lp->rxrcommit = 0;
1167 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1168
1169 /* Initialise Rx Ring */
1170 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1171 lp->rxring[i].next = ringptr;
1172 ringptr = &(lp->rxring[i]);
1173 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1174 }
1175
1176 /* Initialise Tx Ring */
1177 lp->txrcommit = 0;
1178 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1179 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1180 lp->txring[i].next = ringptr;
1181 ringptr = &(lp->txring[i]);
1182 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1183 }
1184 }
1185 }
1186 \f
1187
1188 /* These functions "format" the entries in the pdl structure */
1189 /* They return how much memory the fragments need. */
1190 static int hp100_init_rxpdl(struct net_device *dev,
1191 register hp100_ring_t * ringptr,
1192 register u32 * pdlptr)
1193 {
1194 /* pdlptr is starting address for this pdl */
1195
1196 if (0 != (((unsigned long) pdlptr) & 0xf))
1197 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1198 dev->name, (unsigned long) pdlptr);
1199
1200 ringptr->pdl = pdlptr + 1;
1201 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1202 ringptr->skb = (void *) NULL;
1203
1204 /*
1205 * Write address and length of first PDL Fragment (which is used for
1206 * storing the RX-Header
1207 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1208 * store this information. (PDH is at offset 0x04)
1209 */
1210 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1211
1212 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1213 *(pdlptr + 3) = 4; /* Length Frag 1 */
1214
1215 return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
1216 }
1217
1218
1219 static int hp100_init_txpdl(struct net_device *dev,
1220 register hp100_ring_t * ringptr,
1221 register u32 * pdlptr)
1222 {
1223 if (0 != (((unsigned long) pdlptr) & 0xf))
1224 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1225
1226 ringptr->pdl = pdlptr; /* +1; */
1227 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1228 ringptr->skb = (void *) NULL;
1229
1230 return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
1231 }
1232
1233 /*
1234 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1235 * for possible odd word alignment rounding up to next dword and set PDL
1236 * address for fragment#2
1237 * Returns: 0 if unable to allocate skb_buff
1238 * 1 if successful
1239 */
1240 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1241 struct net_device *dev)
1242 {
1243 #ifdef HP100_DEBUG_B
1244 int ioaddr = dev->base_addr;
1245 #endif
1246 #ifdef HP100_DEBUG_BM
1247 u_int *p;
1248 #endif
1249
1250 #ifdef HP100_DEBUG_B
1251 hp100_outw(0x4207, TRACE);
1252 printk("hp100: %s: build rx pdl\n", dev->name);
1253 #endif
1254
1255 /* Allocate skb buffer of maximum size */
1256 /* Note: This depends on the alloc_skb functions allocating more
1257 * space than requested, i.e. aligning to 16bytes */
1258
1259 ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
1260
1261 if (NULL != ringptr->skb) {
1262 /*
1263 * Reserve 2 bytes at the head of the buffer to land the IP header
1264 * on a long word boundary (According to the Network Driver section
1265 * in the Linux KHG, this should help to increase performance.)
1266 */
1267 skb_reserve(ringptr->skb, 2);
1268
1269 ringptr->skb->dev = dev;
1270 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1271
1272 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1273 /* Note: 1st Fragment is used for the 4 byte packet status
1274 * (receive header). Its PDL entries are set up by init_rxpdl. So
1275 * here we only have to set up the PDL fragment entries for the data
1276 * part. Those 4 bytes will be stored in the DMA memory region
1277 * directly before the PDL.
1278 */
1279 #ifdef HP100_DEBUG_BM
1280 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1281 dev->name, (u_int) ringptr->pdl,
1282 ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
1283 (unsigned int) ringptr->skb->data);
1284 #endif
1285
1286 /* Conversion to new PCI API : map skbuf data to PCI bus.
1287 * Doc says it's OK for EISA as well - Jean II */
1288 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1289 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1290 ringptr->skb->data);
1291 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1292
1293 #ifdef HP100_DEBUG_BM
1294 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1295 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1296 #endif
1297 return (1);
1298 }
1299 /* else: */
1300 /* alloc_skb failed (no memory) -> still can receive the header
1301 * fragment into PDL memory. make PDL safe by clearing msgptr and
1302 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1303 */
1304 #ifdef HP100_DEBUG_BM
1305 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1306 #endif
1307
1308 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1309
1310 return (0);
1311 }
1312
1313 /*
1314 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1315 *
1316 * Makes assumption that skb's are always contiguous memory areas and
1317 * therefore PDLs contain only 2 physical fragments.
1318 * - While the number of Rx PDLs with buffers is less than maximum
1319 * a. Get a maximum packet size skb
1320 * b. Put the physical address of the buffer into the PDL.
1321 * c. Output physical address of PDL to adapter.
1322 */
1323 static void hp100_rxfill(struct net_device *dev)
1324 {
1325 int ioaddr = dev->base_addr;
1326
1327 struct hp100_private *lp = netdev_priv(dev);
1328 hp100_ring_t *ringptr;
1329
1330 #ifdef HP100_DEBUG_B
1331 hp100_outw(0x4208, TRACE);
1332 printk("hp100: %s: rxfill\n", dev->name);
1333 #endif
1334
1335 hp100_page(PERFORMANCE);
1336
1337 while (lp->rxrcommit < MAX_RX_PDL) {
1338 /*
1339 ** Attempt to get a buffer and build a Rx PDL.
1340 */
1341 ringptr = lp->rxrtail;
1342 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1343 return; /* None available, return */
1344 }
1345
1346 /* Hand this PDL over to the card */
1347 /* Note: This needs performance page selected! */
1348 #ifdef HP100_DEBUG_BM
1349 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1350 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1351 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1352 #endif
1353
1354 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1355
1356 lp->rxrcommit += 1;
1357 lp->rxrtail = ringptr->next;
1358 }
1359 }
1360
1361 /*
1362 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1363 */
1364
1365 static void hp100_BM_shutdown(struct net_device *dev)
1366 {
1367 int ioaddr = dev->base_addr;
1368 struct hp100_private *lp = netdev_priv(dev);
1369 unsigned long time;
1370
1371 #ifdef HP100_DEBUG_B
1372 hp100_outw(0x4209, TRACE);
1373 printk("hp100: %s: bm shutdown\n", dev->name);
1374 #endif
1375
1376 hp100_page(PERFORMANCE);
1377 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1378 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1379
1380 /* Ensure Interrupts are off */
1381 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1382
1383 /* Disable all MAC activity */
1384 hp100_page(MAC_CTRL);
1385 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1386
1387 /* If cascade MMU is not already in reset */
1388 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1389 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1390 * MMU pointers will not be reset out from underneath
1391 */
1392 hp100_page(MAC_CTRL);
1393 for (time = 0; time < 5000; time++) {
1394 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1395 break;
1396 }
1397
1398 /* Shutdown algorithm depends on the generation of Cascade */
1399 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1400 /* Disable Busmaster mode and wait for bit to go to zero. */
1401 hp100_page(HW_MAP);
1402 hp100_andb(~HP100_BM_MASTER, BM);
1403 /* 100 ms timeout */
1404 for (time = 0; time < 32000; time++) {
1405 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1406 break;
1407 }
1408 } else { /* Shasta or Rainier Shutdown/Reset */
1409 /* To ensure all bus master inloading activity has ceased,
1410 * wait for no Rx PDAs or no Rx packets on card.
1411 */
1412 hp100_page(PERFORMANCE);
1413 /* 100 ms timeout */
1414 for (time = 0; time < 10000; time++) {
1415 /* RX_PDL: PDLs not executed. */
1416 /* RX_PKT_CNT: RX'd packets on card. */
1417 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1418 break;
1419 }
1420
1421 if (time >= 10000)
1422 printk("hp100: %s: BM shutdown error.\n", dev->name);
1423
1424 /* To ensure all bus master outloading activity has ceased,
1425 * wait until the Tx PDA count goes to zero or no more Tx space
1426 * available in the Tx region of the card.
1427 */
1428 /* 100 ms timeout */
1429 for (time = 0; time < 10000; time++) {
1430 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1431 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1432 break;
1433 }
1434
1435 /* Disable Busmaster mode */
1436 hp100_page(HW_MAP);
1437 hp100_andb(~HP100_BM_MASTER, BM);
1438 } /* end of shutdown procedure for non-etr parts */
1439
1440 hp100_cascade_reset(dev, 1);
1441 }
1442 hp100_page(PERFORMANCE);
1443 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1444 /* Busmaster mode should be shut down now. */
1445 }
1446
1447 static int hp100_check_lan(struct net_device *dev)
1448 {
1449 struct hp100_private *lp = netdev_priv(dev);
1450
1451 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1452 hp100_stop_interface(dev);
1453 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1454 printk("hp100: %s: no connection found - check wire\n", dev->name);
1455 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1456 return -EIO;
1457 }
1458 if (lp->lan_type == HP100_LAN_100)
1459 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1460 hp100_start_interface(dev);
1461 }
1462 return 0;
1463 }
1464
1465 /*
1466 * transmit functions
1467 */
1468
1469 /* tx function for busmaster mode */
1470 static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1471 {
1472 unsigned long flags;
1473 int i, ok_flag;
1474 int ioaddr = dev->base_addr;
1475 struct hp100_private *lp = netdev_priv(dev);
1476 hp100_ring_t *ringptr;
1477
1478 #ifdef HP100_DEBUG_B
1479 hp100_outw(0x4210, TRACE);
1480 printk("hp100: %s: start_xmit_bm\n", dev->name);
1481 #endif
1482
1483 if (skb == NULL) {
1484 return 0;
1485 }
1486
1487 if (skb->len <= 0)
1488 return 0;
1489
1490 if (skb->len < ETH_ZLEN && lp->chip == HP100_CHIPID_SHASTA) {
1491 skb = skb_padto(skb, ETH_ZLEN);
1492 if (skb == NULL)
1493 return 0;
1494 }
1495
1496 /* Get Tx ring tail pointer */
1497 if (lp->txrtail->next == lp->txrhead) {
1498 /* No memory. */
1499 #ifdef HP100_DEBUG
1500 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1501 #endif
1502 /* not waited long enough since last tx? */
1503 if (jiffies - dev->trans_start < HZ)
1504 return -EAGAIN;
1505
1506 if (hp100_check_lan(dev))
1507 return -EIO;
1508
1509 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1510 /* we have a 100Mb/s adapter but it isn't connected to hub */
1511 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1512 hp100_stop_interface(dev);
1513 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1514 hp100_start_interface(dev);
1515 } else {
1516 spin_lock_irqsave(&lp->lock, flags);
1517 hp100_ints_off(); /* Useful ? Jean II */
1518 i = hp100_sense_lan(dev);
1519 hp100_ints_on();
1520 spin_unlock_irqrestore(&lp->lock, flags);
1521 if (i == HP100_LAN_ERR)
1522 printk("hp100: %s: link down detected\n", dev->name);
1523 else if (lp->lan_type != i) { /* cable change! */
1524 /* it's very hard - all network settings must be changed!!! */
1525 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1526 lp->lan_type = i;
1527 hp100_stop_interface(dev);
1528 if (lp->lan_type == HP100_LAN_100)
1529 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1530 hp100_start_interface(dev);
1531 } else {
1532 printk("hp100: %s: interface reset\n", dev->name);
1533 hp100_stop_interface(dev);
1534 if (lp->lan_type == HP100_LAN_100)
1535 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1536 hp100_start_interface(dev);
1537 }
1538 }
1539
1540 dev->trans_start = jiffies;
1541 return -EAGAIN;
1542 }
1543
1544 /*
1545 * we have to turn int's off before modifying this, otherwise
1546 * a tx_pdl_cleanup could occur at the same time
1547 */
1548 spin_lock_irqsave(&lp->lock, flags);
1549 ringptr = lp->txrtail;
1550 lp->txrtail = ringptr->next;
1551
1552 /* Check whether packet has minimal packet size */
1553 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1554 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1555
1556 ringptr->skb = skb;
1557 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1558 if (lp->chip == HP100_CHIPID_SHASTA) {
1559 /* TODO:Could someone who has the EISA card please check if this works? */
1560 ringptr->pdl[2] = i;
1561 } else { /* Lassen */
1562 /* In the PDL, don't use the padded size but the real packet size: */
1563 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1564 }
1565 /* Conversion to new PCI API : map skbuf data to PCI bus.
1566 * Doc says it's OK for EISA as well - Jean II */
1567 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1568
1569 /* Hand this PDL to the card. */
1570 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1571
1572 lp->txrcommit++;
1573 spin_unlock_irqrestore(&lp->lock, flags);
1574
1575 /* Update statistics */
1576 lp->stats.tx_packets++;
1577 lp->stats.tx_bytes += skb->len;
1578 dev->trans_start = jiffies;
1579
1580 return 0;
1581 }
1582 \f
1583
1584 /* clean_txring checks if packets have been sent by the card by reading
1585 * the TX_PDL register from the performance page and comparing it to the
1586 * number of commited packets. It then frees the skb's of the packets that
1587 * obviously have been sent to the network.
1588 *
1589 * Needs the PERFORMANCE page selected.
1590 */
1591 static void hp100_clean_txring(struct net_device *dev)
1592 {
1593 struct hp100_private *lp = netdev_priv(dev);
1594 int ioaddr = dev->base_addr;
1595 int donecount;
1596
1597 #ifdef HP100_DEBUG_B
1598 hp100_outw(0x4211, TRACE);
1599 printk("hp100: %s: clean txring\n", dev->name);
1600 #endif
1601
1602 /* How many PDLs have been transmitted? */
1603 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1604
1605 #ifdef HP100_DEBUG
1606 if (donecount > MAX_TX_PDL)
1607 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1608 #endif
1609
1610 for (; 0 != donecount; donecount--) {
1611 #ifdef HP100_DEBUG_BM
1612 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1613 dev->name, (u_int) lp->txrhead->skb->data,
1614 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1615 #endif
1616 /* Conversion to new PCI API : NOP */
1617 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1618 dev_kfree_skb_any(lp->txrhead->skb);
1619 lp->txrhead->skb = (void *) NULL;
1620 lp->txrhead = lp->txrhead->next;
1621 lp->txrcommit--;
1622 }
1623 }
1624
1625 /* tx function for slave modes */
1626 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1627 {
1628 unsigned long flags;
1629 int i, ok_flag;
1630 int ioaddr = dev->base_addr;
1631 u_short val;
1632 struct hp100_private *lp = netdev_priv(dev);
1633
1634 #ifdef HP100_DEBUG_B
1635 hp100_outw(0x4212, TRACE);
1636 printk("hp100: %s: start_xmit\n", dev->name);
1637 #endif
1638
1639 if (skb == NULL) {
1640 return 0;
1641 }
1642
1643 if (skb->len <= 0)
1644 return 0;
1645
1646 if (hp100_check_lan(dev))
1647 return -EIO;
1648
1649 /* If there is not enough free memory on the card... */
1650 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1651 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1652 #ifdef HP100_DEBUG
1653 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1654 #endif
1655 /* not waited long enough since last failed tx try? */
1656 if (jiffies - dev->trans_start < HZ) {
1657 #ifdef HP100_DEBUG
1658 printk("hp100: %s: trans_start timing problem\n",
1659 dev->name);
1660 #endif
1661 return -EAGAIN;
1662 }
1663 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1664 /* we have a 100Mb/s adapter but it isn't connected to hub */
1665 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1666 hp100_stop_interface(dev);
1667 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1668 hp100_start_interface(dev);
1669 } else {
1670 spin_lock_irqsave(&lp->lock, flags);
1671 hp100_ints_off(); /* Useful ? Jean II */
1672 i = hp100_sense_lan(dev);
1673 hp100_ints_on();
1674 spin_unlock_irqrestore(&lp->lock, flags);
1675 if (i == HP100_LAN_ERR)
1676 printk("hp100: %s: link down detected\n", dev->name);
1677 else if (lp->lan_type != i) { /* cable change! */
1678 /* it's very hard - all network setting must be changed!!! */
1679 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1680 lp->lan_type = i;
1681 hp100_stop_interface(dev);
1682 if (lp->lan_type == HP100_LAN_100)
1683 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1684 hp100_start_interface(dev);
1685 } else {
1686 printk("hp100: %s: interface reset\n", dev->name);
1687 hp100_stop_interface(dev);
1688 if (lp->lan_type == HP100_LAN_100)
1689 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1690 hp100_start_interface(dev);
1691 mdelay(1);
1692 }
1693 }
1694 dev->trans_start = jiffies;
1695 return -EAGAIN;
1696 }
1697
1698 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1699 #ifdef HP100_DEBUG_TX
1700 printk("hp100: %s: start_xmit: busy\n", dev->name);
1701 #endif
1702 }
1703
1704 spin_lock_irqsave(&lp->lock, flags);
1705 hp100_ints_off();
1706 val = hp100_inw(IRQ_STATUS);
1707 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1708 * when the current packet being transmitted on the wire is completed. */
1709 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1710 #ifdef HP100_DEBUG_TX
1711 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1712 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1713 #endif
1714
1715 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1716 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1717
1718 hp100_outw(i, DATA32); /* tell card the total packet length */
1719 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1720
1721 if (lp->mode == 2) { /* memory mapped */
1722 if (lp->mem_ptr_virt) { /* high pci memory was remapped */
1723 /* Note: The J2585B needs alignment to 32bits here! */
1724 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1725 if (!ok_flag)
1726 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1727 } else {
1728 /* Note: The J2585B needs alignment to 32bits here! */
1729 isa_memcpy_toio(lp->mem_ptr_phys, skb->data, (skb->len + 3) & ~3);
1730 if (!ok_flag)
1731 isa_memset_io(lp->mem_ptr_phys, 0, HP100_MIN_PACKET_SIZE - skb->len);
1732 }
1733 } else { /* programmed i/o */
1734 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1735 (skb->len + 3) >> 2);
1736 if (!ok_flag)
1737 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1738 hp100_outl(0, DATA32);
1739 }
1740
1741 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1742
1743 lp->stats.tx_packets++;
1744 lp->stats.tx_bytes += skb->len;
1745 dev->trans_start = jiffies;
1746 hp100_ints_on();
1747 spin_unlock_irqrestore(&lp->lock, flags);
1748
1749 dev_kfree_skb_any(skb);
1750
1751 #ifdef HP100_DEBUG_TX
1752 printk("hp100: %s: start_xmit: end\n", dev->name);
1753 #endif
1754
1755 return 0;
1756 }
1757 \f
1758
1759 /*
1760 * Receive Function (Non-Busmaster mode)
1761 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1762 * packet counter is non-zero.
1763 * For non-busmaster, this function does the whole work of transfering
1764 * the packet to the host memory and then up to higher layers via skb
1765 * and netif_rx.
1766 */
1767
1768 static void hp100_rx(struct net_device *dev)
1769 {
1770 int packets, pkt_len;
1771 int ioaddr = dev->base_addr;
1772 struct hp100_private *lp = netdev_priv(dev);
1773 u_int header;
1774 struct sk_buff *skb;
1775
1776 #ifdef DEBUG_B
1777 hp100_outw(0x4213, TRACE);
1778 printk("hp100: %s: rx\n", dev->name);
1779 #endif
1780
1781 /* First get indication of received lan packet */
1782 /* RX_PKT_CND indicates the number of packets which have been fully */
1783 /* received onto the card but have not been fully transferred of the card */
1784 packets = hp100_inb(RX_PKT_CNT);
1785 #ifdef HP100_DEBUG_RX
1786 if (packets > 1)
1787 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1788 #endif
1789
1790 while (packets-- > 0) {
1791 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1792 /* really advanced to the next packet. */
1793 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1794 #ifdef HP100_DEBUG_RX
1795 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1796 #endif
1797 }
1798
1799 /* First we get the header, which contains information about the */
1800 /* actual length of the received packet. */
1801 if (lp->mode == 2) { /* memory mapped mode */
1802 if (lp->mem_ptr_virt) /* if memory was remapped */
1803 header = readl(lp->mem_ptr_virt);
1804 else
1805 header = isa_readl(lp->mem_ptr_phys);
1806 } else /* programmed i/o */
1807 header = hp100_inl(DATA32);
1808
1809 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1810
1811 #ifdef HP100_DEBUG_RX
1812 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1813 dev->name, header & HP100_PKT_LEN_MASK,
1814 (header >> 16) & 0xfff8, (header >> 16) & 7);
1815 #endif
1816
1817 /* Now we allocate the skb and transfer the data into it. */
1818 skb = dev_alloc_skb(pkt_len+2);
1819 if (skb == NULL) { /* Not enough memory->drop packet */
1820 #ifdef HP100_DEBUG
1821 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1822 dev->name, pkt_len);
1823 #endif
1824 lp->stats.rx_dropped++;
1825 } else { /* skb successfully allocated */
1826
1827 u_char *ptr;
1828
1829 skb_reserve(skb,2);
1830 skb->dev = dev;
1831
1832 /* ptr to start of the sk_buff data area */
1833 skb_put(skb, pkt_len);
1834 ptr = skb->data;
1835
1836 /* Now transfer the data from the card into that area */
1837 if (lp->mode == 2) {
1838 if (lp->mem_ptr_virt)
1839 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1840 /* Note alignment to 32bit transfers */
1841 else
1842 isa_memcpy_fromio(ptr, lp->mem_ptr_phys, pkt_len);
1843 } else /* io mapped */
1844 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1845
1846 skb->protocol = eth_type_trans(skb, dev);
1847
1848 #ifdef HP100_DEBUG_RX
1849 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1850 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1851 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1852 ptr[9], ptr[10], ptr[11]);
1853 #endif
1854 netif_rx(skb);
1855 dev->last_rx = jiffies;
1856 lp->stats.rx_packets++;
1857 lp->stats.rx_bytes += pkt_len;
1858 }
1859
1860 /* Indicate the card that we have got the packet */
1861 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1862
1863 switch (header & 0x00070000) {
1864 case (HP100_MULTI_ADDR_HASH << 16):
1865 case (HP100_MULTI_ADDR_NO_HASH << 16):
1866 lp->stats.multicast++;
1867 break;
1868 }
1869 } /* end of while(there are packets) loop */
1870 #ifdef HP100_DEBUG_RX
1871 printk("hp100_rx: %s: end\n", dev->name);
1872 #endif
1873 }
1874
1875 /*
1876 * Receive Function for Busmaster Mode
1877 */
1878 static void hp100_rx_bm(struct net_device *dev)
1879 {
1880 int ioaddr = dev->base_addr;
1881 struct hp100_private *lp = netdev_priv(dev);
1882 hp100_ring_t *ptr;
1883 u_int header;
1884 int pkt_len;
1885
1886 #ifdef HP100_DEBUG_B
1887 hp100_outw(0x4214, TRACE);
1888 printk("hp100: %s: rx_bm\n", dev->name);
1889 #endif
1890
1891 #ifdef HP100_DEBUG
1892 if (0 == lp->rxrcommit) {
1893 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1894 return;
1895 } else
1896 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1897 * the cards BM engine */
1898 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1899 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1900 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1901 lp->rxrcommit);
1902 return;
1903 }
1904 #endif
1905
1906 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1907 /*
1908 * The packet was received into the pdl pointed to by lp->rxrhead (
1909 * the oldest pdl in the ring
1910 */
1911
1912 /* First we get the header, which contains information about the */
1913 /* actual length of the received packet. */
1914
1915 ptr = lp->rxrhead;
1916
1917 header = *(ptr->pdl - 1);
1918 pkt_len = (header & HP100_PKT_LEN_MASK);
1919
1920 /* Conversion to new PCI API : NOP */
1921 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1922
1923 #ifdef HP100_DEBUG_BM
1924 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1925 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1926 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1927 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",
1928 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1929 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1930 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1931 #endif
1932
1933 if ((pkt_len >= MIN_ETHER_SIZE) &&
1934 (pkt_len <= MAX_ETHER_SIZE)) {
1935 if (ptr->skb == NULL) {
1936 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1937 /* can happen if we only allocated room for the pdh due to memory shortage. */
1938 lp->stats.rx_dropped++;
1939 } else {
1940 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1941 ptr->skb->protocol =
1942 eth_type_trans(ptr->skb, dev);
1943
1944 netif_rx(ptr->skb); /* Up and away... */
1945
1946 dev->last_rx = jiffies;
1947 lp->stats.rx_packets++;
1948 lp->stats.rx_bytes += pkt_len;
1949 }
1950
1951 switch (header & 0x00070000) {
1952 case (HP100_MULTI_ADDR_HASH << 16):
1953 case (HP100_MULTI_ADDR_NO_HASH << 16):
1954 lp->stats.multicast++;
1955 break;
1956 }
1957 } else {
1958 #ifdef HP100_DEBUG
1959 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1960 #endif
1961 if (ptr->skb != NULL)
1962 dev_kfree_skb_any(ptr->skb);
1963 lp->stats.rx_errors++;
1964 }
1965
1966 lp->rxrhead = lp->rxrhead->next;
1967
1968 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1969 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1970 /* No space for skb, header can still be received. */
1971 #ifdef HP100_DEBUG
1972 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1973 #endif
1974 return;
1975 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1976 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1977 lp->rxrtail = lp->rxrtail->next;
1978 }
1979
1980 }
1981 }
1982
1983 /*
1984 * statistics
1985 */
1986 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1987 {
1988 unsigned long flags;
1989 int ioaddr = dev->base_addr;
1990 struct hp100_private *lp = netdev_priv(dev);
1991
1992 #ifdef HP100_DEBUG_B
1993 hp100_outw(0x4215, TRACE);
1994 #endif
1995
1996 spin_lock_irqsave(&lp->lock, flags);
1997 hp100_ints_off(); /* Useful ? Jean II */
1998 hp100_update_stats(dev);
1999 hp100_ints_on();
2000 spin_unlock_irqrestore(&lp->lock, flags);
2001 return &(lp->stats);
2002 }
2003
2004 static void hp100_update_stats(struct net_device *dev)
2005 {
2006 int ioaddr = dev->base_addr;
2007 u_short val;
2008 struct hp100_private *lp = netdev_priv(dev);
2009
2010 #ifdef HP100_DEBUG_B
2011 hp100_outw(0x4216, TRACE);
2012 printk("hp100: %s: update-stats\n", dev->name);
2013 #endif
2014
2015 /* Note: Statistics counters clear when read. */
2016 hp100_page(MAC_CTRL);
2017 val = hp100_inw(DROPPED) & 0x0fff;
2018 lp->stats.rx_errors += val;
2019 lp->stats.rx_over_errors += val;
2020 val = hp100_inb(CRC);
2021 lp->stats.rx_errors += val;
2022 lp->stats.rx_crc_errors += val;
2023 val = hp100_inb(ABORT);
2024 lp->stats.tx_errors += val;
2025 lp->stats.tx_aborted_errors += val;
2026 hp100_page(PERFORMANCE);
2027 }
2028
2029 static void hp100_misc_interrupt(struct net_device *dev)
2030 {
2031 #ifdef HP100_DEBUG_B
2032 int ioaddr = dev->base_addr;
2033 #endif
2034 struct hp100_private *lp = netdev_priv(dev);
2035
2036 #ifdef HP100_DEBUG_B
2037 int ioaddr = dev->base_addr;
2038 hp100_outw(0x4216, TRACE);
2039 printk("hp100: %s: misc_interrupt\n", dev->name);
2040 #endif
2041
2042 /* Note: Statistics counters clear when read. */
2043 lp->stats.rx_errors++;
2044 lp->stats.tx_errors++;
2045 }
2046
2047 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2048 {
2049 unsigned long flags;
2050
2051 #ifdef HP100_DEBUG_B
2052 hp100_outw(0x4217, TRACE);
2053 printk("hp100: %s: clear_stats\n", dev->name);
2054 #endif
2055
2056 spin_lock_irqsave(&lp->lock, flags);
2057 hp100_page(MAC_CTRL); /* get all statistics bytes */
2058 hp100_inw(DROPPED);
2059 hp100_inb(CRC);
2060 hp100_inb(ABORT);
2061 hp100_page(PERFORMANCE);
2062 spin_unlock_irqrestore(&lp->lock, flags);
2063 }
2064 \f
2065
2066 /*
2067 * multicast setup
2068 */
2069
2070 /*
2071 * Set or clear the multicast filter for this adapter.
2072 */
2073
2074 static void hp100_set_multicast_list(struct net_device *dev)
2075 {
2076 unsigned long flags;
2077 int ioaddr = dev->base_addr;
2078 struct hp100_private *lp = netdev_priv(dev);
2079
2080 #ifdef HP100_DEBUG_B
2081 hp100_outw(0x4218, TRACE);
2082 printk("hp100: %s: set_mc_list\n", dev->name);
2083 #endif
2084
2085 spin_lock_irqsave(&lp->lock, flags);
2086 hp100_ints_off();
2087 hp100_page(MAC_CTRL);
2088 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2089
2090 if (dev->flags & IFF_PROMISC) {
2091 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2092 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2093 memset(&lp->hash_bytes, 0xff, 8);
2094 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2095 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2096 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2097 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2098 if (dev->flags & IFF_ALLMULTI) {
2099 /* set hash filter to receive all multicast packets */
2100 memset(&lp->hash_bytes, 0xff, 8);
2101 } else {
2102 int i, j, idx;
2103 u_char *addrs;
2104 struct dev_mc_list *dmi;
2105
2106 memset(&lp->hash_bytes, 0x00, 8);
2107 #ifdef HP100_DEBUG
2108 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2109 #endif
2110 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2111 addrs = dmi->dmi_addr;
2112 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2113 #ifdef HP100_DEBUG
2114 printk("hp100: %s: multicast = %02x:%02x:%02x:%02x:%02x:%02x, ",
2115 dev->name, addrs[0], addrs[1], addrs[2],
2116 addrs[3], addrs[4], addrs[5]);
2117 #endif
2118 for (j = idx = 0; j < 6; j++) {
2119 idx ^= *addrs++ & 0x3f;
2120 printk(":%02x:", idx);
2121 }
2122 #ifdef HP100_DEBUG
2123 printk("idx = %i\n", idx);
2124 #endif
2125 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2126 }
2127 }
2128 }
2129 #else
2130 memset(&lp->hash_bytes, 0xff, 8);
2131 #endif
2132 } else {
2133 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2134 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2135 memset(&lp->hash_bytes, 0x00, 8);
2136 }
2137
2138 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2139 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2140 int i;
2141
2142 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2143 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2144 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2145
2146 hp100_page(MAC_ADDRESS);
2147 for (i = 0; i < 8; i++)
2148 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2149 #ifdef HP100_DEBUG
2150 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2151 dev->name, lp->mac1_mode, lp->mac2_mode,
2152 lp->hash_bytes[0], lp->hash_bytes[1],
2153 lp->hash_bytes[2], lp->hash_bytes[3],
2154 lp->hash_bytes[4], lp->hash_bytes[5],
2155 lp->hash_bytes[6], lp->hash_bytes[7]);
2156 #endif
2157
2158 if (lp->lan_type == HP100_LAN_100) {
2159 #ifdef HP100_DEBUG
2160 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2161 #endif
2162 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2163 }
2164 } else {
2165 int i;
2166 u_char old_hash_bytes[8];
2167
2168 hp100_page(MAC_ADDRESS);
2169 for (i = 0; i < 8; i++)
2170 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2171 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2172 for (i = 0; i < 8; i++)
2173 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2174 #ifdef HP100_DEBUG
2175 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2176 dev->name, lp->hash_bytes[0],
2177 lp->hash_bytes[1], lp->hash_bytes[2],
2178 lp->hash_bytes[3], lp->hash_bytes[4],
2179 lp->hash_bytes[5], lp->hash_bytes[6],
2180 lp->hash_bytes[7]);
2181 #endif
2182
2183 if (lp->lan_type == HP100_LAN_100) {
2184 #ifdef HP100_DEBUG
2185 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2186 #endif
2187 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2188 }
2189 }
2190 }
2191
2192 hp100_page(MAC_CTRL);
2193 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2194 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2195
2196 hp100_page(PERFORMANCE);
2197 hp100_ints_on();
2198 spin_unlock_irqrestore(&lp->lock, flags);
2199 }
2200
2201 /*
2202 * hardware interrupt handling
2203 */
2204
2205 static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs)
2206 {
2207 struct net_device *dev = (struct net_device *) dev_id;
2208 struct hp100_private *lp = netdev_priv(dev);
2209
2210 int ioaddr;
2211 u_int val;
2212
2213 if (dev == NULL)
2214 return IRQ_NONE;
2215 ioaddr = dev->base_addr;
2216
2217 spin_lock(&lp->lock);
2218
2219 hp100_ints_off();
2220
2221 #ifdef HP100_DEBUG_B
2222 hp100_outw(0x4219, TRACE);
2223 #endif
2224
2225 /* hp100_page( PERFORMANCE ); */
2226 val = hp100_inw(IRQ_STATUS);
2227 #ifdef HP100_DEBUG_IRQ
2228 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2229 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2230 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2231 #endif
2232
2233 if (val == 0) { /* might be a shared interrupt */
2234 spin_unlock(&lp->lock);
2235 hp100_ints_on();
2236 return IRQ_NONE;
2237 }
2238 /* We're only interested in those interrupts we really enabled. */
2239 /* val &= hp100_inw( IRQ_MASK ); */
2240
2241 /*
2242 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2243 * is considered executed whenever the RX_PDL data structure is no longer
2244 * needed.
2245 */
2246 if (val & HP100_RX_PDL_FILL_COMPL) {
2247 if (lp->mode == 1)
2248 hp100_rx_bm(dev);
2249 else {
2250 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2251 }
2252 }
2253
2254 /*
2255 * The RX_PACKET interrupt is set, when the receive packet counter is
2256 * non zero. We use this interrupt for receiving in slave mode. In
2257 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2258 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2259 * we somehow have missed a rx_pdl_fill_compl interrupt.
2260 */
2261
2262 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2263 if (lp->mode != 1) /* non busmaster */
2264 hp100_rx(dev);
2265 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2266 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2267 hp100_rx_bm(dev);
2268 }
2269 }
2270
2271 /*
2272 * Ack. that we have noticed the interrupt and thereby allow next one.
2273 * Note that this is now done after the slave rx function, since first
2274 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2275 * on the J2573.
2276 */
2277 hp100_outw(val, IRQ_STATUS);
2278
2279 /*
2280 * RX_ERROR is set when a packet is dropped due to no memory resources on
2281 * the card or when a RCV_ERR occurs.
2282 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2283 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2284 */
2285 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2286 #ifdef HP100_DEBUG_IRQ
2287 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2288 #endif
2289 hp100_update_stats(dev);
2290 if (lp->mode == 1) {
2291 hp100_rxfill(dev);
2292 hp100_clean_txring(dev);
2293 }
2294 }
2295
2296 /*
2297 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2298 */
2299 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2300 hp100_rxfill(dev);
2301
2302 /*
2303 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2304 * is completed
2305 */
2306 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2307 hp100_clean_txring(dev);
2308
2309 /*
2310 * MISC_ERROR is set when either the LAN link goes down or a detected
2311 * bus error occurs.
2312 */
2313 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2314 #ifdef HP100_DEBUG_IRQ
2315 printk
2316 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2317 dev->name);
2318 #endif
2319 if (lp->mode == 1) {
2320 hp100_clean_txring(dev);
2321 hp100_rxfill(dev);
2322 }
2323 hp100_misc_interrupt(dev);
2324 }
2325
2326 spin_unlock(&lp->lock);
2327 hp100_ints_on();
2328 return IRQ_HANDLED;
2329 }
2330
2331 /*
2332 * some misc functions
2333 */
2334
2335 static void hp100_start_interface(struct net_device *dev)
2336 {
2337 unsigned long flags;
2338 int ioaddr = dev->base_addr;
2339 struct hp100_private *lp = netdev_priv(dev);
2340
2341 #ifdef HP100_DEBUG_B
2342 hp100_outw(0x4220, TRACE);
2343 printk("hp100: %s: hp100_start_interface\n", dev->name);
2344 #endif
2345
2346 spin_lock_irqsave(&lp->lock, flags);
2347
2348 /* Ensure the adapter does not want to request an interrupt when */
2349 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2350 hp100_page(PERFORMANCE);
2351 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2352 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2353 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2354 OPTION_LSW);
2355 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2356 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2357
2358 if (lp->mode == 1) {
2359 /* Make sure BM bit is set... */
2360 hp100_page(HW_MAP);
2361 hp100_orb(HP100_BM_MASTER, BM);
2362 hp100_rxfill(dev);
2363 } else if (lp->mode == 2) {
2364 /* Enable memory mapping. Note: Don't do this when busmaster. */
2365 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2366 }
2367
2368 hp100_page(PERFORMANCE);
2369 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2370 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2371
2372 /* enable a few interrupts: */
2373 if (lp->mode == 1) { /* busmaster mode */
2374 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2375 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2376 /* HP100_RX_PACKET | */
2377 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2378 /* HP100_TX_PDA_ZERO | */
2379 HP100_TX_COMPLETE |
2380 /* HP100_MISC_ERROR | */
2381 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2382 } else {
2383 hp100_outw(HP100_RX_PACKET |
2384 HP100_RX_ERROR | HP100_SET_HB |
2385 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2386 }
2387
2388 /* Note : before hp100_set_multicast_list(), because it will play with
2389 * spinlock itself... Jean II */
2390 spin_unlock_irqrestore(&lp->lock, flags);
2391
2392 /* Enable MAC Tx and RX, set MAC modes, ... */
2393 hp100_set_multicast_list(dev);
2394 }
2395
2396 static void hp100_stop_interface(struct net_device *dev)
2397 {
2398 struct hp100_private *lp = netdev_priv(dev);
2399 int ioaddr = dev->base_addr;
2400 u_int val;
2401
2402 #ifdef HP100_DEBUG_B
2403 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2404 hp100_outw(0x4221, TRACE);
2405 #endif
2406
2407 if (lp->mode == 1)
2408 hp100_BM_shutdown(dev);
2409 else {
2410 /* Note: MMAP_DIS will be reenabled by start_interface */
2411 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2412 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2413 OPTION_LSW);
2414 val = hp100_inw(OPTION_LSW);
2415
2416 hp100_page(MAC_CTRL);
2417 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2418
2419 if (!(val & HP100_HW_RST))
2420 return; /* If reset, imm. return ... */
2421 /* ... else: busy wait until idle */
2422 for (val = 0; val < 6000; val++)
2423 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2424 hp100_page(PERFORMANCE);
2425 return;
2426 }
2427 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2428 hp100_page(PERFORMANCE);
2429 }
2430 }
2431
2432 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2433 {
2434 int i;
2435 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2436
2437 #ifdef HP100_DEBUG_B
2438 hp100_outw(0x4222, TRACE);
2439 #endif
2440
2441 hp100_page(EEPROM_CTRL);
2442 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2443 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2444 for (i = 0; i < 10000; i++)
2445 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2446 return;
2447 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2448 }
2449
2450 /* Sense connection status.
2451 * return values: LAN_10 - Connected to 10Mbit/s network
2452 * LAN_100 - Connected to 100Mbit/s network
2453 * LAN_ERR - not connected or 100Mbit/s Hub down
2454 */
2455 static int hp100_sense_lan(struct net_device *dev)
2456 {
2457 int ioaddr = dev->base_addr;
2458 u_short val_VG, val_10;
2459 struct hp100_private *lp = netdev_priv(dev);
2460
2461 #ifdef HP100_DEBUG_B
2462 hp100_outw(0x4223, TRACE);
2463 #endif
2464
2465 hp100_page(MAC_CTRL);
2466 val_10 = hp100_inb(10_LAN_CFG_1);
2467 val_VG = hp100_inb(VG_LAN_CFG_1);
2468 hp100_page(PERFORMANCE);
2469 #ifdef HP100_DEBUG
2470 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2471 dev->name, val_VG, val_10);
2472 #endif
2473
2474 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2475 return HP100_LAN_10;
2476
2477 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2478 /*
2479 * This can be overriden by dos utility, so if this has no effect,
2480 * perhaps you need to download that utility from HP and set card
2481 * back to "auto detect".
2482 */
2483 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2484 hp100_page(MAC_CTRL);
2485 hp100_outb(val_10, 10_LAN_CFG_1);
2486 hp100_page(PERFORMANCE);
2487 return HP100_LAN_COAX;
2488 }
2489
2490 /* Those cards don't have a 100 Mbit connector */
2491 if ( !strcmp(lp->id, "HWP1920") ||
2492 (lp->pci_dev &&
2493 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2494 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2495 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2496 return HP100_LAN_ERR;
2497
2498 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2499 return HP100_LAN_100;
2500 return HP100_LAN_ERR;
2501 }
2502
2503 static int hp100_down_vg_link(struct net_device *dev)
2504 {
2505 struct hp100_private *lp = netdev_priv(dev);
2506 int ioaddr = dev->base_addr;
2507 unsigned long time;
2508 long savelan, newlan;
2509
2510 #ifdef HP100_DEBUG_B
2511 hp100_outw(0x4224, TRACE);
2512 printk("hp100: %s: down_vg_link\n", dev->name);
2513 #endif
2514
2515 hp100_page(MAC_CTRL);
2516 time = jiffies + (HZ / 4);
2517 do {
2518 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2519 break;
2520 if (!in_interrupt()) {
2521 set_current_state(TASK_INTERRUPTIBLE);
2522 schedule_timeout(1);
2523 }
2524 } while (time_after(time, jiffies));
2525
2526 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2527 return 0;
2528
2529 /* Drop the VG Link by clearing the link up cmd and load addr. */
2530
2531 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2532 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2533
2534 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2535 time = jiffies + (HZ / 2);
2536 do {
2537 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2538 break;
2539 if (!in_interrupt()) {
2540 set_current_state(TASK_INTERRUPTIBLE);
2541 schedule_timeout(1);
2542 }
2543 } while (time_after(time, jiffies));
2544
2545 #ifdef HP100_DEBUG
2546 if (time_after_eq(jiffies, time))
2547 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2548 #endif
2549
2550 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2551 /* logout under traffic (even though all the status bits are cleared), */
2552 /* do this workaround to get the Rev 1 MAC in its idle state */
2553 if (lp->chip == HP100_CHIPID_LASSEN) {
2554 /* Reset VG MAC to insure it leaves the logoff state even if */
2555 /* the Hub is still emitting tones */
2556 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2557 udelay(1500); /* wait for >1ms */
2558 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2559 udelay(1500);
2560 }
2561
2562 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2563 /* to get the VG mac to full reset. This is not req.d with later chips */
2564 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2565 /* selected again! This will be left to the connect hub function to */
2566 /* perform if desired. */
2567 if (lp->chip == HP100_CHIPID_LASSEN) {
2568 /* Have to write to 10 and 100VG control registers simultaneously */
2569 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2570 newlan &= ~(HP100_VG_SEL << 16);
2571 newlan |= (HP100_DOT3_MAC) << 8;
2572 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2573 hp100_outl(newlan, 10_LAN_CFG_1);
2574
2575 /* Conditionally stall for 5sec on VG selected. */
2576 time = jiffies + (HZ * 5);
2577 do {
2578 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
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 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2587 hp100_outl(savelan, 10_LAN_CFG_1);
2588 }
2589
2590 time = jiffies + (3 * HZ); /* Timeout 3s */
2591 do {
2592 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2593 break;
2594 if (!in_interrupt()) {
2595 set_current_state(TASK_INTERRUPTIBLE);
2596 schedule_timeout(1);
2597 }
2598 } while (time_after(time, jiffies));
2599
2600 if (time_before_eq(time, jiffies)) {
2601 #ifdef HP100_DEBUG
2602 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2603 #endif
2604 return -EIO;
2605 }
2606
2607 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2608 do {
2609 if (!in_interrupt()) {
2610 set_current_state(TASK_INTERRUPTIBLE);
2611 schedule_timeout(1);
2612 }
2613 } while (time_after(time, jiffies));
2614
2615 return 0;
2616 }
2617
2618 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2619 {
2620 int ioaddr = dev->base_addr;
2621 struct hp100_private *lp = netdev_priv(dev);
2622 u_short val = 0;
2623 unsigned long time;
2624 int startst;
2625
2626 #ifdef HP100_DEBUG_B
2627 hp100_outw(0x4225, TRACE);
2628 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2629 #endif
2630
2631 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2632 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2633 * promiscuous mode change)
2634 */
2635 hp100_page(MAC_CTRL);
2636 startst = hp100_inb(VG_LAN_CFG_1);
2637 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2638 #ifdef HP100_DEBUG_TRAINING
2639 printk("hp100: %s: Start training\n", dev->name);
2640 #endif
2641
2642 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2643 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2644
2645 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2646 /* entry then temporarily put them into force 100Mbit mode */
2647 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2648 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2649
2650 /* Drop the VG link by zeroing Link Up Command and Load Address */
2651 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2652
2653 #ifdef HP100_DEBUG_TRAINING
2654 printk("hp100: %s: Bring down the link\n", dev->name);
2655 #endif
2656
2657 /* Wait for link to drop */
2658 time = jiffies + (HZ / 10);
2659 do {
2660 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2661 break;
2662 if (!in_interrupt()) {
2663 set_current_state(TASK_INTERRUPTIBLE);
2664 schedule_timeout(1);
2665 }
2666 } while (time_after(time, jiffies));
2667
2668 /* Start an addressed training and optionally request promiscuous port */
2669 if ((dev->flags) & IFF_PROMISC) {
2670 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2671 if (lp->chip == HP100_CHIPID_LASSEN)
2672 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2673 } else {
2674 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2675 /* For ETR parts we need to reset the prom. bit in the training
2676 * register, otherwise promiscious mode won't be disabled.
2677 */
2678 if (lp->chip == HP100_CHIPID_LASSEN) {
2679 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2680 }
2681 }
2682
2683 /* With ETR parts, frame format request bits can be set. */
2684 if (lp->chip == HP100_CHIPID_LASSEN)
2685 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2686
2687 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2688
2689 /* Note: Next wait could be omitted for Hood and earlier chips under */
2690 /* certain circumstances */
2691 /* TODO: check if hood/earlier and skip wait. */
2692
2693 /* Wait for either short timeout for VG tones or long for login */
2694 /* Wait for the card hardware to signalise link cable status ok... */
2695 hp100_page(MAC_CTRL);
2696 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2697 do {
2698 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2699 break;
2700 if (!in_interrupt()) {
2701 set_current_state(TASK_INTERRUPTIBLE);
2702 schedule_timeout(1);
2703 }
2704 } while (time_before(jiffies, time));
2705
2706 if (time_after_eq(jiffies, time)) {
2707 #ifdef HP100_DEBUG_TRAINING
2708 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2709 #endif
2710 } else {
2711 #ifdef HP100_DEBUG_TRAINING
2712 printk
2713 ("hp100: %s: HUB tones detected. Trying to train.\n",
2714 dev->name);
2715 #endif
2716
2717 time = jiffies + (2 * HZ); /* again a timeout */
2718 do {
2719 val = hp100_inb(VG_LAN_CFG_1);
2720 if ((val & (HP100_LINK_UP_ST))) {
2721 #ifdef HP100_DEBUG_TRAINING
2722 printk("hp100: %s: Passed training.\n", dev->name);
2723 #endif
2724 break;
2725 }
2726 if (!in_interrupt()) {
2727 set_current_state(TASK_INTERRUPTIBLE);
2728 schedule_timeout(1);
2729 }
2730 } while (time_after(time, jiffies));
2731 }
2732
2733 /* If LINK_UP_ST is set, then we are logged into the hub. */
2734 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2735 #ifdef HP100_DEBUG_TRAINING
2736 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2737 if (lp->chip == HP100_CHIPID_LASSEN) {
2738 val = hp100_inw(TRAIN_ALLOW);
2739 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2740 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2741 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2742 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2743 }
2744 #endif
2745 } else {
2746 /* If LINK_UP_ST is not set, login was not successful */
2747 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2748 if (lp->chip == HP100_CHIPID_LASSEN) {
2749 /* Check allowed Register to find out why there is a problem. */
2750 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2751 #ifdef HP100_DEBUG_TRAINING
2752 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2753 #endif
2754 if (val & HP100_MALLOW_ACCDENIED)
2755 printk("hp100: %s: HUB access denied.\n", dev->name);
2756 if (val & HP100_MALLOW_CONFIGURE)
2757 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2758 if (val & HP100_MALLOW_DUPADDR)
2759 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2760 }
2761 }
2762
2763 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2764 /* to auto-select mode */
2765
2766 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2767 hp100_page(MAC_CTRL);
2768 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2769 }
2770
2771 val = hp100_inb(VG_LAN_CFG_1);
2772
2773 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2774 hp100_page(PERFORMANCE);
2775 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2776
2777 if (val & HP100_LINK_UP_ST)
2778 return (0); /* login was ok */
2779 else {
2780 printk("hp100: %s: Training failed.\n", dev->name);
2781 hp100_down_vg_link(dev);
2782 return -EIO;
2783 }
2784 }
2785 /* no forced relogin & already link there->no training. */
2786 return -EIO;
2787 }
2788
2789 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2790 {
2791 int ioaddr = dev->base_addr;
2792 struct hp100_private *lp = netdev_priv(dev);
2793
2794 #ifdef HP100_DEBUG_B
2795 hp100_outw(0x4226, TRACE);
2796 printk("hp100: %s: cascade_reset\n", dev->name);
2797 #endif
2798
2799 if (enable) {
2800 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2801 if (lp->chip == HP100_CHIPID_LASSEN) {
2802 /* Lassen requires a PCI transmit fifo reset */
2803 hp100_page(HW_MAP);
2804 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2805 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2806 /* Wait for min. 300 ns */
2807 /* we can't use jiffies here, because it may be */
2808 /* that we have disabled the timer... */
2809 udelay(400);
2810 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2811 hp100_page(PERFORMANCE);
2812 }
2813 } else { /* bring out of reset */
2814 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2815 udelay(400);
2816 hp100_page(PERFORMANCE);
2817 }
2818 }
2819
2820 #ifdef HP100_DEBUG
2821 void hp100_RegisterDump(struct net_device *dev)
2822 {
2823 int ioaddr = dev->base_addr;
2824 int Page;
2825 int Register;
2826
2827 /* Dump common registers */
2828 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2829 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2830 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2831 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2832 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2833
2834 /* Dump paged registers */
2835 for (Page = 0; Page < 8; Page++) {
2836 /* Dump registers */
2837 printk("page: 0x%.2x\n", Page);
2838 outw(Page, ioaddr + 0x02);
2839 for (Register = 0x8; Register < 0x22; Register += 2) {
2840 /* Display Register contents except data port */
2841 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2842 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2843 }
2844 }
2845 }
2846 hp100_page(PERFORMANCE);
2847 }
2848 #endif
2849
2850
2851 static void cleanup_dev(struct net_device *d)
2852 {
2853 struct hp100_private *p = netdev_priv(d);
2854
2855 unregister_netdev(d);
2856 release_region(d->base_addr, HP100_REGION_SIZE);
2857
2858 if (p->mode == 1) /* busmaster */
2859 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2860 p->page_vaddr_algn,
2861 virt_to_whatever(d, p->page_vaddr_algn));
2862 if (p->mem_ptr_virt)
2863 iounmap(p->mem_ptr_virt);
2864
2865 free_netdev(d);
2866 }
2867
2868 #ifdef CONFIG_EISA
2869 static int __init hp100_eisa_probe (struct device *gendev)
2870 {
2871 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2872 struct eisa_device *edev = to_eisa_device(gendev);
2873 int err;
2874
2875 if (!dev)
2876 return -ENOMEM;
2877
2878 SET_MODULE_OWNER(dev);
2879 SET_NETDEV_DEV(dev, &edev->dev);
2880
2881 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2882 if (err)
2883 goto out1;
2884
2885 #ifdef HP100_DEBUG
2886 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2887 dev->base_addr);
2888 #endif
2889 gendev->driver_data = dev;
2890 return 0;
2891 out1:
2892 free_netdev(dev);
2893 return err;
2894 }
2895
2896 static int __devexit hp100_eisa_remove (struct device *gendev)
2897 {
2898 struct net_device *dev = gendev->driver_data;
2899 cleanup_dev(dev);
2900 return 0;
2901 }
2902
2903 static struct eisa_driver hp100_eisa_driver = {
2904 .id_table = hp100_eisa_tbl,
2905 .driver = {
2906 .name = "hp100",
2907 .probe = hp100_eisa_probe,
2908 .remove = __devexit_p (hp100_eisa_remove),
2909 }
2910 };
2911 #endif
2912
2913 #ifdef CONFIG_PCI
2914 static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2915 const struct pci_device_id *ent)
2916 {
2917 struct net_device *dev;
2918 int ioaddr;
2919 u_short pci_command;
2920 int err;
2921
2922 if (pci_enable_device(pdev))
2923 return -ENODEV;
2924
2925 dev = alloc_etherdev(sizeof(struct hp100_private));
2926 if (!dev) {
2927 err = -ENOMEM;
2928 goto out0;
2929 }
2930
2931 SET_MODULE_OWNER(dev);
2932 SET_NETDEV_DEV(dev, &pdev->dev);
2933
2934 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2935 if (!(pci_command & PCI_COMMAND_IO)) {
2936 #ifdef HP100_DEBUG
2937 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2938 #endif
2939 pci_command |= PCI_COMMAND_IO;
2940 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2941 }
2942
2943 if (!(pci_command & PCI_COMMAND_MASTER)) {
2944 #ifdef HP100_DEBUG
2945 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2946 #endif
2947 pci_command |= PCI_COMMAND_MASTER;
2948 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2949 }
2950
2951 ioaddr = pci_resource_start(pdev, 0);
2952 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2953 if (err)
2954 goto out1;
2955
2956 #ifdef HP100_DEBUG
2957 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2958 #endif
2959 pci_set_drvdata(pdev, dev);
2960 return 0;
2961 out1:
2962 free_netdev(dev);
2963 out0:
2964 pci_disable_device(pdev);
2965 return err;
2966 }
2967
2968 static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2969 {
2970 struct net_device *dev = pci_get_drvdata(pdev);
2971
2972 cleanup_dev(dev);
2973 pci_disable_device(pdev);
2974 }
2975
2976
2977 static struct pci_driver hp100_pci_driver = {
2978 .name = "hp100",
2979 .id_table = hp100_pci_tbl,
2980 .probe = hp100_pci_probe,
2981 .remove = __devexit_p(hp100_pci_remove),
2982 };
2983 #endif
2984
2985 /*
2986 * module section
2987 */
2988
2989 MODULE_LICENSE("GPL");
2990 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, "
2991 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2992 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2993
2994 /*
2995 * Note: to register three isa devices, use:
2996 * option hp100 hp100_port=0,0,0
2997 * to register one card at io 0x280 as eth239, use:
2998 * option hp100 hp100_port=0x280
2999 */
3000 #if defined(MODULE) && defined(CONFIG_ISA)
3001 #define HP100_DEVICES 5
3002 /* Parameters set by insmod */
3003 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
3004 module_param_array(hp100_port, int, NULL, 0);
3005
3006 /* List of devices */
3007 static struct net_device *hp100_devlist[HP100_DEVICES];
3008
3009 static int __init hp100_isa_init(void)
3010 {
3011 struct net_device *dev;
3012 int i, err, cards = 0;
3013
3014 /* Don't autoprobe ISA bus */
3015 if (hp100_port[0] == 0)
3016 return -ENODEV;
3017
3018 /* Loop on all possible base addresses */
3019 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
3020 dev = alloc_etherdev(sizeof(struct hp100_private));
3021 if (!dev) {
3022 printk(KERN_WARNING "hp100: no memory for network device\n");
3023 while (cards > 0)
3024 cleanup_dev(hp100_devlist[--cards]);
3025
3026 return -ENOMEM;
3027 }
3028 SET_MODULE_OWNER(dev);
3029
3030 err = hp100_isa_probe(dev, hp100_port[i]);
3031 if (!err)
3032 hp100_devlist[cards++] = dev;
3033 else
3034 free_netdev(dev);
3035 }
3036
3037 return cards > 0 ? 0 : -ENODEV;
3038 }
3039
3040 static void __exit hp100_isa_cleanup(void)
3041 {
3042 int i;
3043
3044 for (i = 0; i < HP100_DEVICES; i++) {
3045 struct net_device *dev = hp100_devlist[i];
3046 if (dev)
3047 cleanup_dev(dev);
3048 }
3049 }
3050 #else
3051 #define hp100_isa_init() (0)
3052 #define hp100_isa_cleanup() do { } while(0)
3053 #endif
3054
3055 static int __init hp100_module_init(void)
3056 {
3057 int err;
3058
3059 err = hp100_isa_init();
3060 if (err && err != -ENODEV)
3061 goto out;
3062 #ifdef CONFIG_EISA
3063 err = eisa_driver_register(&hp100_eisa_driver);
3064 if (err && err != -ENODEV)
3065 goto out2;
3066 #endif
3067 #ifdef CONFIG_PCI
3068 err = pci_module_init(&hp100_pci_driver);
3069 if (err && err != -ENODEV)
3070 goto out3;
3071 #endif
3072 out:
3073 return err;
3074 out3:
3075 #ifdef CONFIG_EISA
3076 eisa_driver_unregister (&hp100_eisa_driver);
3077 out2:
3078 #endif
3079 hp100_isa_cleanup();
3080 goto out;
3081 }
3082
3083
3084 static void __exit hp100_module_exit(void)
3085 {
3086 hp100_isa_cleanup();
3087 #ifdef CONFIG_EISA
3088 eisa_driver_unregister (&hp100_eisa_driver);
3089 #endif
3090 #ifdef CONFIG_PCI
3091 pci_unregister_driver (&hp100_pci_driver);
3092 #endif
3093 }
3094
3095 module_init(hp100_module_init)
3096 module_exit(hp100_module_exit)
3097
3098
3099 /*
3100 * Local variables:
3101 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"
3102 * c-indent-level: 2
3103 * tab-width: 8
3104 * End:
3105 */
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