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[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / net / hp100.c
blobb3a898c5a585b73ec55a5278e3ed21d892e19f4a
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/spinlock.h>
110 #include <linux/netdevice.h>
111 #include <linux/etherdevice.h>
112 #include <linux/skbuff.h>
113 #include <linux/types.h>
114 #include <linux/config.h> /* for CONFIG_PCI */
115 #include <linux/delay.h>
116 #include <linux/init.h>
117 #include <linux/bitops.h>
118
119 #include <asm/io.h>
120
121 #include "hp100.h"
122
123 /*
124 * defines
125 */
126
127 #define HP100_BUS_ISA 0
128 #define HP100_BUS_EISA 1
129 #define HP100_BUS_PCI 2
130
131 #define HP100_REGION_SIZE 0x20 /* for ioports */
132 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
133
134 #define HP100_MAX_PACKET_SIZE (1536+4)
135 #define HP100_MIN_PACKET_SIZE 60
136
137 #ifndef HP100_DEFAULT_RX_RATIO
138 /* default - 75% onboard memory on the card are used for RX packets */
139 #define HP100_DEFAULT_RX_RATIO 75
140 #endif
141
142 #ifndef HP100_DEFAULT_PRIORITY_TX
143 /* default - don't enable transmit outgoing packets as priority */
144 #define HP100_DEFAULT_PRIORITY_TX 0
145 #endif
146
147 /*
148 * structures
149 */
150
151 struct hp100_private {
152 spinlock_t lock;
153 char id[HP100_SIG_LEN];
154 u_short chip;
155 u_short soft_model;
156 u_int memory_size;
157 u_int virt_memory_size;
158 u_short rx_ratio; /* 1 - 99 */
159 u_short priority_tx; /* != 0 - priority tx */
160 u_short mode; /* PIO, Shared Mem or Busmaster */
161 u_char bus;
162 struct pci_dev *pci_dev;
163 short mem_mapped; /* memory mapped access */
164 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
165 unsigned long mem_ptr_phys; /* physical memory mapped area */
166 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
167 int hub_status; /* was login to hub successful? */
168 u_char mac1_mode;
169 u_char mac2_mode;
170 u_char hash_bytes[8];
171 struct net_device_stats stats;
172
173 /* Rings for busmaster mode: */
174 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
175 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
176 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
177 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
178
179 hp100_ring_t rxring[MAX_RX_PDL];
180 hp100_ring_t txring[MAX_TX_PDL];
181
182 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
183 u_long whatever_offset; /* Offset to bus/phys/dma address */
184 int rxrcommit; /* # Rx PDLs commited to adapter */
185 int txrcommit; /* # Tx PDLs commited to adapter */
186 };
187
188 /*
189 * variables
190 */
191 static const char *hp100_isa_tbl[] = {
192 "HWPF150", /* HP J2573 rev A */
193 "HWP1950", /* HP J2573 */
194 };
195
196 #ifdef CONFIG_EISA
197 static struct eisa_device_id hp100_eisa_tbl[] = {
198 { "HWPF180" }, /* HP J2577 rev A */
199 { "HWP1920" }, /* HP 27248B */
200 { "HWP1940" }, /* HP J2577 */
201 { "HWP1990" }, /* HP J2577 */
202 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
203 { "CPX0401" }, /* FreedomLine 100/VG */
204 { "" } /* Mandatory final entry ! */
205 };
206 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
207 #endif
208
209 #ifdef CONFIG_PCI
210 static struct pci_device_id hp100_pci_tbl[] = {
211 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
212 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
217 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
218 {} /* Terminating entry */
219 };
220 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
221 #endif
222
223 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
224 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
225 static int hp100_mode = 1;
226
227 module_param(hp100_rx_ratio, int, 0);
228 module_param(hp100_priority_tx, int, 0);
229 module_param(hp100_mode, int, 0);
230
231 /*
232 * prototypes
233 */
234
235 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
236 struct pci_dev *pci_dev);
237
238
239 static int hp100_open(struct net_device *dev);
240 static int hp100_close(struct net_device *dev);
241 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
242 static int hp100_start_xmit_bm(struct sk_buff *skb,
243 struct net_device *dev);
244 static void hp100_rx(struct net_device *dev);
245 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
246 static void hp100_misc_interrupt(struct net_device *dev);
247 static void hp100_update_stats(struct net_device *dev);
248 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
249 static void hp100_set_multicast_list(struct net_device *dev);
250 static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs);
251 static void hp100_start_interface(struct net_device *dev);
252 static void hp100_stop_interface(struct net_device *dev);
253 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
254 static int hp100_sense_lan(struct net_device *dev);
255 static int hp100_login_to_vg_hub(struct net_device *dev,
256 u_short force_relogin);
257 static int hp100_down_vg_link(struct net_device *dev);
258 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
259 static void hp100_BM_shutdown(struct net_device *dev);
260 static void hp100_mmuinit(struct net_device *dev);
261 static void hp100_init_pdls(struct net_device *dev);
262 static int hp100_init_rxpdl(struct net_device *dev,
263 register hp100_ring_t * ringptr,
264 register u_int * pdlptr);
265 static int hp100_init_txpdl(struct net_device *dev,
266 register hp100_ring_t * ringptr,
267 register u_int * pdlptr);
268 static void hp100_rxfill(struct net_device *dev);
269 static void hp100_hwinit(struct net_device *dev);
270 static void hp100_clean_txring(struct net_device *dev);
271 #ifdef HP100_DEBUG
272 static void hp100_RegisterDump(struct net_device *dev);
273 #endif
274
275 /* Conversion to new PCI API :
276 * Convert an address in a kernel buffer to a bus/phys/dma address.
277 * This work *only* for memory fragments part of lp->page_vaddr,
278 * because it was properly DMA allocated via pci_alloc_consistent(),
279 * so we just need to "retreive" the original mapping to bus/phys/dma
280 * address - Jean II */
281 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
282 {
283 struct hp100_private *lp = netdev_priv(dev);
284 return ((u_long) ptr) + lp->whatever_offset;
285 }
286
287 static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
288 {
289 return pci_map_single(lp->pci_dev, data,
290 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
291 }
292
293 /* TODO: This function should not really be needed in a good design... */
294 static void wait(void)
295 {
296 mdelay(1);
297 }
298
299 /*
300 * probe functions
301 * These functions should - if possible - avoid doing write operations
302 * since this could cause problems when the card is not installed.
303 */
304
305 /*
306 * Read board id and convert to string.
307 * Effectively same code as decode_eisa_sig
308 */
309 static __devinit const char *hp100_read_id(int ioaddr)
310 {
311 int i;
312 static char str[HP100_SIG_LEN];
313 unsigned char sig[4], sum;
314 unsigned short rev;
315
316 hp100_page(ID_MAC_ADDR);
317 sum = 0;
318 for (i = 0; i < 4; i++) {
319 sig[i] = hp100_inb(BOARD_ID + i);
320 sum += sig[i];
321 }
322
323 sum += hp100_inb(BOARD_ID + i);
324 if (sum != 0xff)
325 return NULL; /* bad checksum */
326
327 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
328 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
329 str[2] = (sig[1] & 0x1f) + ('A' - 1);
330 rev = (sig[2] << 8) | sig[3];
331 sprintf(str + 3, "%04X", rev);
332
333 return str;
334 }
335
336 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
337 {
338 const char *sig;
339 int i;
340
341 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
342 goto err;
343
344 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
345 release_region(ioaddr, HP100_REGION_SIZE);
346 goto err;
347 }
348
349 sig = hp100_read_id(ioaddr);
350 release_region(ioaddr, HP100_REGION_SIZE);
351
352 if (sig == NULL)
353 goto err;
354
355 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
356 if (!strcmp(hp100_isa_tbl[i], sig))
357 break;
358
359 }
360
361 if (i < ARRAY_SIZE(hp100_isa_tbl))
362 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
363 err:
364 return -ENODEV;
365
366 }
367 /*
368 * Probe for ISA board.
369 * EISA and PCI are handled by device infrastructure.
370 */
371
372 static int __init hp100_isa_probe(struct net_device *dev, int addr)
373 {
374 int err = -ENODEV;
375
376 /* Probe for a specific ISA address */
377 if (addr > 0xff && addr < 0x400)
378 err = hp100_isa_probe1(dev, addr);
379
380 else if (addr != 0)
381 err = -ENXIO;
382
383 else {
384 /* Probe all ISA possible port regions */
385 for (addr = 0x100; addr < 0x400; addr += 0x20) {
386 err = hp100_isa_probe1(dev, addr);
387 if (!err)
388 break;
389 }
390 }
391 return err;
392 }
393
394
395 #ifndef MODULE
396 struct net_device * __init hp100_probe(int unit)
397 {
398 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
399 int err;
400
401 if (!dev)
402 return ERR_PTR(-ENODEV);
403
404 SET_MODULE_OWNER(dev);
405
406 #ifdef HP100_DEBUG_B
407 hp100_outw(0x4200, TRACE);
408 printk("hp100: %s: probe\n", dev->name);
409 #endif
410
411 if (unit >= 0) {
412 sprintf(dev->name, "eth%d", unit);
413 netdev_boot_setup_check(dev);
414 }
415
416 err = hp100_isa_probe(dev, dev->base_addr);
417 if (err)
418 goto out;
419
420 err = register_netdev(dev);
421 if (err)
422 goto out1;
423 return dev;
424 out1:
425 release_region(dev->base_addr, HP100_REGION_SIZE);
426 out:
427 free_netdev(dev);
428 return ERR_PTR(err);
429 }
430 #endif
431
432 static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
433 u_char bus, struct pci_dev *pci_dev)
434 {
435 int i;
436 int err = -ENODEV;
437 const char *eid;
438 u_int chip;
439 u_char uc;
440 u_int memory_size = 0, virt_memory_size = 0;
441 u_short local_mode, lsw;
442 short mem_mapped;
443 unsigned long mem_ptr_phys;
444 void __iomem *mem_ptr_virt;
445 struct hp100_private *lp;
446
447 #ifdef HP100_DEBUG_B
448 hp100_outw(0x4201, TRACE);
449 printk("hp100: %s: probe1\n", dev->name);
450 #endif
451
452 /* memory region for programmed i/o */
453 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
454 goto out1;
455
456 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
457 goto out2;
458
459 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
460 #ifdef HP100_DEBUG
461 if (chip == HP100_CHIPID_SHASTA)
462 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
463 else if (chip == HP100_CHIPID_RAINIER)
464 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
465 else if (chip == HP100_CHIPID_LASSEN)
466 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
467 else
468 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
469 #endif
470
471 dev->base_addr = ioaddr;
472
473 eid = hp100_read_id(ioaddr);
474 if (eid == NULL) { /* bad checksum? */
475 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
476 goto out2;
477 }
478
479 hp100_page(ID_MAC_ADDR);
480 for (i = uc = 0; i < 7; i++)
481 uc += hp100_inb(LAN_ADDR + i);
482 if (uc != 0xff) {
483 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
484 err = -EIO;
485 goto out2;
486 }
487
488 /* Make sure, that all registers are correctly updated... */
489
490 hp100_load_eeprom(dev, ioaddr);
491 wait();
492
493 /*
494 * Determine driver operation mode
495 *
496 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
497 * force driver modes:
498 * hp100_mode=1 -> default, use busmaster mode if configured.
499 * hp100_mode=2 -> enable shared memory mode
500 * hp100_mode=3 -> force use of i/o mapped mode.
501 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
502 */
503
504 /*
505 * LSW values:
506 * 0x2278 -> J2585B, PnP shared memory mode
507 * 0x2270 -> J2585B, shared memory mode, 0xdc000
508 * 0xa23c -> J2585B, I/O mapped mode
509 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
510 * 0x2220 -> EISA HP, I/O (Shasta Chip)
511 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
512 */
513
514 #if 0
515 local_mode = 0x2270;
516 hp100_outw(0xfefe, OPTION_LSW);
517 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
518 #endif
519
520 /* hp100_mode value maybe used in future by another card */
521 local_mode = hp100_mode;
522 if (local_mode < 1 || local_mode > 4)
523 local_mode = 1; /* default */
524 #ifdef HP100_DEBUG
525 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
526 hp100_inw(OPTION_LSW));
527 #endif
528
529 if (local_mode == 3) {
530 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
531 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
532 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
533 printk("hp100: IO mapped mode forced.\n");
534 } else if (local_mode == 2) {
535 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
536 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
537 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
538 printk("hp100: Shared memory mode requested.\n");
539 } else if (local_mode == 4) {
540 if (chip == HP100_CHIPID_LASSEN) {
541 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
542 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
543 printk("hp100: Busmaster mode requested.\n");
544 }
545 local_mode = 1;
546 }
547
548 if (local_mode == 1) { /* default behaviour */
549 lsw = hp100_inw(OPTION_LSW);
550
551 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
552 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
553 #ifdef HP100_DEBUG
554 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
555 #endif
556 local_mode = 3;
557 } else if (chip == HP100_CHIPID_LASSEN &&
558 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
559 /* Conversion to new PCI API :
560 * I don't have the doc, but I assume that the card
561 * can map the full 32bit address space.
562 * Also, we can have EISA Busmaster cards (not tested),
563 * so beware !!! - Jean II */
564 if((bus == HP100_BUS_PCI) &&
565 (pci_set_dma_mask(pci_dev, 0xffffffff))) {
566 /* Gracefully fallback to shared memory */
567 goto busmasterfail;
568 }
569 printk("hp100: Busmaster mode enabled.\n");
570 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
571 } else {
572 busmasterfail:
573 #ifdef HP100_DEBUG
574 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
575 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
576 #endif
577 /* In this case, try shared memory mode */
578 local_mode = 2;
579 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
580 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
581 }
582 }
583 #ifdef HP100_DEBUG
584 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
585 #endif
586
587 /* Check for shared memory on the card, eventually remap it */
588 hp100_page(HW_MAP);
589 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
590 mem_ptr_phys = 0UL;
591 mem_ptr_virt = NULL;
592 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
593 virt_memory_size = 0;
594
595 /* For memory mapped or busmaster mode, we want the memory address */
596 if (mem_mapped || (local_mode == 1)) {
597 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
598 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
599
600 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
601 printk("hp100: Can only use programmed i/o mode.\n");
602 mem_ptr_phys = 0;
603 mem_mapped = 0;
604 local_mode = 3; /* Use programmed i/o */
605 }
606
607 /* We do not need access to shared memory in busmaster mode */
608 /* However in slave mode we need to remap high (>1GB) card memory */
609 if (local_mode != 1) { /* = not busmaster */
610 /* We try with smaller memory sizes, if ioremap fails */
611 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
612 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
613 #ifdef HP100_DEBUG
614 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
615 #endif
616 } else {
617 #ifdef HP100_DEBUG
618 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);
619 #endif
620 break;
621 }
622 }
623
624 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
625 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
626 local_mode = 3;
627 virt_memory_size = 0;
628 }
629 }
630 }
631
632 if (local_mode == 3) { /* io mapped forced */
633 mem_mapped = 0;
634 mem_ptr_phys = 0;
635 mem_ptr_virt = NULL;
636 printk("hp100: Using (slow) programmed i/o mode.\n");
637 }
638
639 /* Initialise the "private" data structure for this card. */
640 lp = netdev_priv(dev);
641
642 spin_lock_init(&lp->lock);
643 strlcpy(lp->id, eid, HP100_SIG_LEN);
644 lp->chip = chip;
645 lp->mode = local_mode;
646 lp->bus = bus;
647 lp->pci_dev = pci_dev;
648 lp->priority_tx = hp100_priority_tx;
649 lp->rx_ratio = hp100_rx_ratio;
650 lp->mem_ptr_phys = mem_ptr_phys;
651 lp->mem_ptr_virt = mem_ptr_virt;
652 hp100_page(ID_MAC_ADDR);
653 lp->soft_model = hp100_inb(SOFT_MODEL);
654 lp->mac1_mode = HP100_MAC1MODE3;
655 lp->mac2_mode = HP100_MAC2MODE3;
656 memset(&lp->hash_bytes, 0x00, 8);
657
658 dev->base_addr = ioaddr;
659
660 lp->memory_size = memory_size;
661 lp->virt_memory_size = virt_memory_size;
662 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
663
664 dev->open = hp100_open;
665 dev->stop = hp100_close;
666
667 if (lp->mode == 1) /* busmaster */
668 dev->hard_start_xmit = hp100_start_xmit_bm;
669 else
670 dev->hard_start_xmit = hp100_start_xmit;
671
672 dev->get_stats = hp100_get_stats;
673 dev->set_multicast_list = &hp100_set_multicast_list;
674
675 /* Ask the card for which IRQ line it is configured */
676 if (bus == HP100_BUS_PCI) {
677 dev->irq = pci_dev->irq;
678 } else {
679 hp100_page(HW_MAP);
680 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
681 if (dev->irq == 2)
682 dev->irq = 9;
683 }
684
685 if (lp->mode == 1) /* busmaster */
686 dev->dma = 4;
687
688 /* Ask the card for its MAC address and store it for later use. */
689 hp100_page(ID_MAC_ADDR);
690 for (i = uc = 0; i < 6; i++)
691 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
692
693 /* Reset statistics (counters) */
694 hp100_clear_stats(lp, ioaddr);
695
696 /* If busmaster mode is wanted, a dma-capable memory area is needed for
697 * the rx and tx PDLs
698 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
699 * needed for the allocation of the memory area.
700 */
701
702 /* TODO: We do not need this with old cards, where PDLs are stored
703 * in the cards shared memory area. But currently, busmaster has been
704 * implemented/tested only with the lassen chip anyway... */
705 if (lp->mode == 1) { /* busmaster */
706 dma_addr_t page_baddr;
707 /* Get physically continous memory for TX & RX PDLs */
708 /* Conversion to new PCI API :
709 * Pages are always aligned and zeroed, no need to it ourself.
710 * Doc says should be OK for EISA bus as well - Jean II */
711 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
712 err = -ENOMEM;
713 goto out2;
714 }
715 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
716
717 #ifdef HP100_DEBUG_BM
718 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);
719 #endif
720 lp->rxrcommit = lp->txrcommit = 0;
721 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
722 lp->txrhead = lp->txrtail = &(lp->txring[0]);
723 }
724
725 /* Initialise the card. */
726 /* (I'm not really sure if it's a good idea to do this during probing, but
727 * like this it's assured that the lan connection type can be sensed
728 * correctly)
729 */
730 hp100_hwinit(dev);
731
732 /* Try to find out which kind of LAN the card is connected to. */
733 lp->lan_type = hp100_sense_lan(dev);
734
735 /* Print out a message what about what we think we have probed. */
736 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
737 switch (bus) {
738 case HP100_BUS_EISA:
739 printk("EISA");
740 break;
741 case HP100_BUS_PCI:
742 printk("PCI");
743 break;
744 default:
745 printk("ISA");
746 break;
747 }
748 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
749
750 if (lp->mode == 2) { /* memory mapped */
751 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
752 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
753 if (mem_ptr_virt)
754 printk(" (virtual base %p)", mem_ptr_virt);
755 printk(".\n");
756
757 /* Set for info when doing ifconfig */
758 dev->mem_start = mem_ptr_phys;
759 dev->mem_end = mem_ptr_phys + lp->memory_size;
760 }
761
762 printk("hp100: ");
763 if (lp->lan_type != HP100_LAN_ERR)
764 printk("Adapter is attached to ");
765 switch (lp->lan_type) {
766 case HP100_LAN_100:
767 printk("100Mb/s Voice Grade AnyLAN network.\n");
768 break;
769 case HP100_LAN_10:
770 printk("10Mb/s network (10baseT).\n");
771 break;
772 case HP100_LAN_COAX:
773 printk("10Mb/s network (coax).\n");
774 break;
775 default:
776 printk("Warning! Link down.\n");
777 }
778
779 return 0;
780 out2:
781 release_region(ioaddr, HP100_REGION_SIZE);
782 out1:
783 return -ENODEV;
784 }
785
786 /* This procedure puts the card into a stable init state */
787 static void hp100_hwinit(struct net_device *dev)
788 {
789 int ioaddr = dev->base_addr;
790 struct hp100_private *lp = netdev_priv(dev);
791
792 #ifdef HP100_DEBUG_B
793 hp100_outw(0x4202, TRACE);
794 printk("hp100: %s: hwinit\n", dev->name);
795 #endif
796
797 /* Initialise the card. -------------------------------------------- */
798
799 /* Clear all pending Ints and disable Ints */
800 hp100_page(PERFORMANCE);
801 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
802 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
803
804 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
805 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
806
807 if (lp->mode == 1) {
808 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
809 wait();
810 } else {
811 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
812 hp100_cascade_reset(dev, 1);
813 hp100_page(MAC_CTRL);
814 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
815 }
816
817 /* Initiate EEPROM reload */
818 hp100_load_eeprom(dev, 0);
819
820 wait();
821
822 /* Go into reset again. */
823 hp100_cascade_reset(dev, 1);
824
825 /* Set Option Registers to a safe state */
826 hp100_outw(HP100_DEBUG_EN |
827 HP100_RX_HDR |
828 HP100_EE_EN |
829 HP100_BM_WRITE |
830 HP100_BM_READ | HP100_RESET_HB |
831 HP100_FAKE_INT |
832 HP100_INT_EN |
833 HP100_MEM_EN |
834 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
835
836 hp100_outw(HP100_TRI_INT |
837 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
838
839 hp100_outb(HP100_PRIORITY_TX |
840 HP100_ADV_NXT_PKT |
841 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
842
843 /* TODO: Configure MMU for Ram Test. */
844 /* TODO: Ram Test. */
845
846 /* Re-check if adapter is still at same i/o location */
847 /* (If the base i/o in eeprom has been changed but the */
848 /* registers had not been changed, a reload of the eeprom */
849 /* would move the adapter to the address stored in eeprom */
850
851 /* TODO: Code to implement. */
852
853 /* Until here it was code from HWdiscover procedure. */
854 /* Next comes code from mmuinit procedure of SCO BM driver which is
855 * called from HWconfigure in the SCO driver. */
856
857 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
858 * multicast filter...
859 */
860 hp100_mmuinit(dev);
861
862 /* We don't turn the interrupts on here - this is done by start_interface. */
863 wait(); /* TODO: Do we really need this? */
864
865 /* Enable Hardware (e.g. unreset) */
866 hp100_cascade_reset(dev, 0);
867
868 /* ------- initialisation complete ----------- */
869
870 /* Finally try to log in the Hub if there may be a VG connection. */
871 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
872 hp100_login_to_vg_hub(dev, 0); /* relogin */
873
874 }
875 \f
876
877 /*
878 * mmuinit - Reinitialise Cascade MMU and MAC settings.
879 * Note: Must already be in reset and leaves card in reset.
880 */
881 static void hp100_mmuinit(struct net_device *dev)
882 {
883 int ioaddr = dev->base_addr;
884 struct hp100_private *lp = netdev_priv(dev);
885 int i;
886
887 #ifdef HP100_DEBUG_B
888 hp100_outw(0x4203, TRACE);
889 printk("hp100: %s: mmuinit\n", dev->name);
890 #endif
891
892 #ifdef HP100_DEBUG
893 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
894 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
895 return;
896 }
897 #endif
898
899 /* Make sure IRQs are masked off and ack'ed. */
900 hp100_page(PERFORMANCE);
901 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
902 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
903
904 /*
905 * Enable Hardware
906 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
907 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
908 * - Clear Priority, Advance Pkt and Xmit Cmd
909 */
910
911 hp100_outw(HP100_DEBUG_EN |
912 HP100_RX_HDR |
913 HP100_EE_EN | HP100_RESET_HB |
914 HP100_IO_EN |
915 HP100_FAKE_INT |
916 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
917
918 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
919
920 if (lp->mode == 1) { /* busmaster */
921 hp100_outw(HP100_BM_WRITE |
922 HP100_BM_READ |
923 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
924 } else if (lp->mode == 2) { /* memory mapped */
925 hp100_outw(HP100_BM_WRITE |
926 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
927 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
928 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
929 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
930 } else if (lp->mode == 3) { /* i/o mapped mode */
931 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
932 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
933 }
934
935 hp100_page(HW_MAP);
936 hp100_outb(0, EARLYRXCFG);
937 hp100_outw(0, EARLYTXCFG);
938
939 /*
940 * Enable Bus Master mode
941 */
942 if (lp->mode == 1) { /* busmaster */
943 /* Experimental: Set some PCI configuration bits */
944 hp100_page(HW_MAP);
945 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
946 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
947
948 /* PCI Bus failures should result in a Misc. Interrupt */
949 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
950
951 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
952 hp100_page(HW_MAP);
953 /* Use Burst Mode and switch on PAGE_CK */
954 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
955 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
956 hp100_orb(HP100_BM_PAGE_CK, BM);
957 hp100_orb(HP100_BM_MASTER, BM);
958 } else { /* not busmaster */
959
960 hp100_page(HW_MAP);
961 hp100_andb(~HP100_BM_MASTER, BM);
962 }
963
964 /*
965 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
966 */
967 hp100_page(MMU_CFG);
968 if (lp->mode == 1) { /* only needed for Busmaster */
969 int xmit_stop, recv_stop;
970
971 if ((lp->chip == HP100_CHIPID_RAINIER)
972 || (lp->chip == HP100_CHIPID_SHASTA)) {
973 int pdl_stop;
974
975 /*
976 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
977 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
978 * to the next higher 1k boundary) bytes for the rx-pdl's
979 * Note: For non-etr chips the transmit stop register must be
980 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
981 */
982 pdl_stop = lp->memory_size;
983 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
984 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
985 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
986 #ifdef HP100_DEBUG_BM
987 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
988 #endif
989 } else {
990 /* ETR chip (Lassen) in busmaster mode */
991 xmit_stop = (lp->memory_size) - 1;
992 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
993 }
994
995 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
996 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
997 #ifdef HP100_DEBUG_BM
998 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
999 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1000 #endif
1001 } else {
1002 /* Slave modes (memory mapped and programmed io) */
1003 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1004 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1005 #ifdef HP100_DEBUG
1006 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1007 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1008 #endif
1009 }
1010
1011 /* Write MAC address into page 1 */
1012 hp100_page(MAC_ADDRESS);
1013 for (i = 0; i < 6; i++)
1014 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1015
1016 /* Zero the multicast hash registers */
1017 for (i = 0; i < 8; i++)
1018 hp100_outb(0x0, HASH_BYTE0 + i);
1019
1020 /* Set up MAC defaults */
1021 hp100_page(MAC_CTRL);
1022
1023 /* Go to LAN Page and zero all filter bits */
1024 /* Zero accept error, accept multicast, accept broadcast and accept */
1025 /* all directed packet bits */
1026 hp100_andb(~(HP100_RX_EN |
1027 HP100_TX_EN |
1028 HP100_ACC_ERRORED |
1029 HP100_ACC_MC |
1030 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1031
1032 hp100_outb(0x00, MAC_CFG_2);
1033
1034 /* Zero the frame format bit. This works around a training bug in the */
1035 /* new hubs. */
1036 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1037
1038 if (lp->priority_tx)
1039 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1040 else
1041 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1042
1043 hp100_outb(HP100_ADV_NXT_PKT |
1044 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1045
1046 /* If busmaster, initialize the PDLs */
1047 if (lp->mode == 1)
1048 hp100_init_pdls(dev);
1049
1050 /* Go to performance page and initalize isr and imr registers */
1051 hp100_page(PERFORMANCE);
1052 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1053 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1054 }
1055
1056 /*
1057 * open/close functions
1058 */
1059
1060 static int hp100_open(struct net_device *dev)
1061 {
1062 struct hp100_private *lp = netdev_priv(dev);
1063 #ifdef HP100_DEBUG_B
1064 int ioaddr = dev->base_addr;
1065 #endif
1066
1067 #ifdef HP100_DEBUG_B
1068 hp100_outw(0x4204, TRACE);
1069 printk("hp100: %s: open\n", dev->name);
1070 #endif
1071
1072 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1073 if (request_irq(dev->irq, hp100_interrupt,
1074 lp->bus == HP100_BUS_PCI || lp->bus ==
1075 HP100_BUS_EISA ? SA_SHIRQ : SA_INTERRUPT,
1076 "hp100", dev)) {
1077 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1078 return -EAGAIN;
1079 }
1080
1081 dev->trans_start = jiffies;
1082 netif_start_queue(dev);
1083
1084 lp->lan_type = hp100_sense_lan(dev);
1085 lp->mac1_mode = HP100_MAC1MODE3;
1086 lp->mac2_mode = HP100_MAC2MODE3;
1087 memset(&lp->hash_bytes, 0x00, 8);
1088
1089 hp100_stop_interface(dev);
1090
1091 hp100_hwinit(dev);
1092
1093 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1094
1095 return 0;
1096 }
1097
1098 /* The close function is called when the interface is to be brought down */
1099 static int hp100_close(struct net_device *dev)
1100 {
1101 int ioaddr = dev->base_addr;
1102 struct hp100_private *lp = netdev_priv(dev);
1103
1104 #ifdef HP100_DEBUG_B
1105 hp100_outw(0x4205, TRACE);
1106 printk("hp100: %s: close\n", dev->name);
1107 #endif
1108
1109 hp100_page(PERFORMANCE);
1110 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1111
1112 hp100_stop_interface(dev);
1113
1114 if (lp->lan_type == HP100_LAN_100)
1115 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1116
1117 netif_stop_queue(dev);
1118
1119 free_irq(dev->irq, dev);
1120
1121 #ifdef HP100_DEBUG
1122 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1123 hp100_inw(OPTION_LSW));
1124 #endif
1125
1126 return 0;
1127 }
1128 \f
1129
1130 /*
1131 * Configure the PDL Rx rings and LAN
1132 */
1133 static void hp100_init_pdls(struct net_device *dev)
1134 {
1135 struct hp100_private *lp = netdev_priv(dev);
1136 hp100_ring_t *ringptr;
1137 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1138 int i;
1139
1140 #ifdef HP100_DEBUG_B
1141 int ioaddr = dev->base_addr;
1142 #endif
1143
1144 #ifdef HP100_DEBUG_B
1145 hp100_outw(0x4206, TRACE);
1146 printk("hp100: %s: init pdls\n", dev->name);
1147 #endif
1148
1149 if (0 == lp->page_vaddr_algn)
1150 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1151 else {
1152 /* pageptr shall point into the DMA accessible memory region */
1153 /* we use this pointer to status the upper limit of allocated */
1154 /* memory in the allocated page. */
1155 /* note: align the pointers to the pci cache line size */
1156 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1157 pageptr = lp->page_vaddr_algn;
1158
1159 lp->rxrcommit = 0;
1160 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1161
1162 /* Initialise Rx Ring */
1163 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1164 lp->rxring[i].next = ringptr;
1165 ringptr = &(lp->rxring[i]);
1166 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1167 }
1168
1169 /* Initialise Tx Ring */
1170 lp->txrcommit = 0;
1171 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1172 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1173 lp->txring[i].next = ringptr;
1174 ringptr = &(lp->txring[i]);
1175 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1176 }
1177 }
1178 }
1179 \f
1180
1181 /* These functions "format" the entries in the pdl structure */
1182 /* They return how much memory the fragments need. */
1183 static int hp100_init_rxpdl(struct net_device *dev,
1184 register hp100_ring_t * ringptr,
1185 register u32 * pdlptr)
1186 {
1187 /* pdlptr is starting address for this pdl */
1188
1189 if (0 != (((unsigned long) pdlptr) & 0xf))
1190 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1191 dev->name, (unsigned long) pdlptr);
1192
1193 ringptr->pdl = pdlptr + 1;
1194 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1195 ringptr->skb = (void *) NULL;
1196
1197 /*
1198 * Write address and length of first PDL Fragment (which is used for
1199 * storing the RX-Header
1200 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1201 * store this information. (PDH is at offset 0x04)
1202 */
1203 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1204
1205 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1206 *(pdlptr + 3) = 4; /* Length Frag 1 */
1207
1208 return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
1209 }
1210
1211
1212 static int hp100_init_txpdl(struct net_device *dev,
1213 register hp100_ring_t * ringptr,
1214 register u32 * pdlptr)
1215 {
1216 if (0 != (((unsigned long) pdlptr) & 0xf))
1217 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1218
1219 ringptr->pdl = pdlptr; /* +1; */
1220 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1221 ringptr->skb = (void *) NULL;
1222
1223 return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
1224 }
1225
1226 /*
1227 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1228 * for possible odd word alignment rounding up to next dword and set PDL
1229 * address for fragment#2
1230 * Returns: 0 if unable to allocate skb_buff
1231 * 1 if successful
1232 */
1233 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1234 struct net_device *dev)
1235 {
1236 #ifdef HP100_DEBUG_B
1237 int ioaddr = dev->base_addr;
1238 #endif
1239 #ifdef HP100_DEBUG_BM
1240 u_int *p;
1241 #endif
1242
1243 #ifdef HP100_DEBUG_B
1244 hp100_outw(0x4207, TRACE);
1245 printk("hp100: %s: build rx pdl\n", dev->name);
1246 #endif
1247
1248 /* Allocate skb buffer of maximum size */
1249 /* Note: This depends on the alloc_skb functions allocating more
1250 * space than requested, i.e. aligning to 16bytes */
1251
1252 ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
1253
1254 if (NULL != ringptr->skb) {
1255 /*
1256 * Reserve 2 bytes at the head of the buffer to land the IP header
1257 * on a long word boundary (According to the Network Driver section
1258 * in the Linux KHG, this should help to increase performance.)
1259 */
1260 skb_reserve(ringptr->skb, 2);
1261
1262 ringptr->skb->dev = dev;
1263 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1264
1265 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1266 /* Note: 1st Fragment is used for the 4 byte packet status
1267 * (receive header). Its PDL entries are set up by init_rxpdl. So
1268 * here we only have to set up the PDL fragment entries for the data
1269 * part. Those 4 bytes will be stored in the DMA memory region
1270 * directly before the PDL.
1271 */
1272 #ifdef HP100_DEBUG_BM
1273 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1274 dev->name, (u_int) ringptr->pdl,
1275 ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
1276 (unsigned int) ringptr->skb->data);
1277 #endif
1278
1279 /* Conversion to new PCI API : map skbuf data to PCI bus.
1280 * Doc says it's OK for EISA as well - Jean II */
1281 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1282 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1283 ringptr->skb->data);
1284 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1285
1286 #ifdef HP100_DEBUG_BM
1287 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1288 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1289 #endif
1290 return (1);
1291 }
1292 /* else: */
1293 /* alloc_skb failed (no memory) -> still can receive the header
1294 * fragment into PDL memory. make PDL safe by clearing msgptr and
1295 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1296 */
1297 #ifdef HP100_DEBUG_BM
1298 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1299 #endif
1300
1301 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1302
1303 return (0);
1304 }
1305
1306 /*
1307 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1308 *
1309 * Makes assumption that skb's are always contiguous memory areas and
1310 * therefore PDLs contain only 2 physical fragments.
1311 * - While the number of Rx PDLs with buffers is less than maximum
1312 * a. Get a maximum packet size skb
1313 * b. Put the physical address of the buffer into the PDL.
1314 * c. Output physical address of PDL to adapter.
1315 */
1316 static void hp100_rxfill(struct net_device *dev)
1317 {
1318 int ioaddr = dev->base_addr;
1319
1320 struct hp100_private *lp = netdev_priv(dev);
1321 hp100_ring_t *ringptr;
1322
1323 #ifdef HP100_DEBUG_B
1324 hp100_outw(0x4208, TRACE);
1325 printk("hp100: %s: rxfill\n", dev->name);
1326 #endif
1327
1328 hp100_page(PERFORMANCE);
1329
1330 while (lp->rxrcommit < MAX_RX_PDL) {
1331 /*
1332 ** Attempt to get a buffer and build a Rx PDL.
1333 */
1334 ringptr = lp->rxrtail;
1335 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1336 return; /* None available, return */
1337 }
1338
1339 /* Hand this PDL over to the card */
1340 /* Note: This needs performance page selected! */
1341 #ifdef HP100_DEBUG_BM
1342 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1343 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1344 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1345 #endif
1346
1347 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1348
1349 lp->rxrcommit += 1;
1350 lp->rxrtail = ringptr->next;
1351 }
1352 }
1353
1354 /*
1355 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1356 */
1357
1358 static void hp100_BM_shutdown(struct net_device *dev)
1359 {
1360 int ioaddr = dev->base_addr;
1361 struct hp100_private *lp = netdev_priv(dev);
1362 unsigned long time;
1363
1364 #ifdef HP100_DEBUG_B
1365 hp100_outw(0x4209, TRACE);
1366 printk("hp100: %s: bm shutdown\n", dev->name);
1367 #endif
1368
1369 hp100_page(PERFORMANCE);
1370 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1371 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1372
1373 /* Ensure Interrupts are off */
1374 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1375
1376 /* Disable all MAC activity */
1377 hp100_page(MAC_CTRL);
1378 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1379
1380 /* If cascade MMU is not already in reset */
1381 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1382 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1383 * MMU pointers will not be reset out from underneath
1384 */
1385 hp100_page(MAC_CTRL);
1386 for (time = 0; time < 5000; time++) {
1387 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1388 break;
1389 }
1390
1391 /* Shutdown algorithm depends on the generation of Cascade */
1392 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1393 /* Disable Busmaster mode and wait for bit to go to zero. */
1394 hp100_page(HW_MAP);
1395 hp100_andb(~HP100_BM_MASTER, BM);
1396 /* 100 ms timeout */
1397 for (time = 0; time < 32000; time++) {
1398 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1399 break;
1400 }
1401 } else { /* Shasta or Rainier Shutdown/Reset */
1402 /* To ensure all bus master inloading activity has ceased,
1403 * wait for no Rx PDAs or no Rx packets on card.
1404 */
1405 hp100_page(PERFORMANCE);
1406 /* 100 ms timeout */
1407 for (time = 0; time < 10000; time++) {
1408 /* RX_PDL: PDLs not executed. */
1409 /* RX_PKT_CNT: RX'd packets on card. */
1410 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1411 break;
1412 }
1413
1414 if (time >= 10000)
1415 printk("hp100: %s: BM shutdown error.\n", dev->name);
1416
1417 /* To ensure all bus master outloading activity has ceased,
1418 * wait until the Tx PDA count goes to zero or no more Tx space
1419 * available in the Tx region of the card.
1420 */
1421 /* 100 ms timeout */
1422 for (time = 0; time < 10000; time++) {
1423 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1424 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1425 break;
1426 }
1427
1428 /* Disable Busmaster mode */
1429 hp100_page(HW_MAP);
1430 hp100_andb(~HP100_BM_MASTER, BM);
1431 } /* end of shutdown procedure for non-etr parts */
1432
1433 hp100_cascade_reset(dev, 1);
1434 }
1435 hp100_page(PERFORMANCE);
1436 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1437 /* Busmaster mode should be shut down now. */
1438 }
1439
1440 static int hp100_check_lan(struct net_device *dev)
1441 {
1442 struct hp100_private *lp = netdev_priv(dev);
1443
1444 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1445 hp100_stop_interface(dev);
1446 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1447 printk("hp100: %s: no connection found - check wire\n", dev->name);
1448 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1449 return -EIO;
1450 }
1451 if (lp->lan_type == HP100_LAN_100)
1452 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1453 hp100_start_interface(dev);
1454 }
1455 return 0;
1456 }
1457
1458 /*
1459 * transmit functions
1460 */
1461
1462 /* tx function for busmaster mode */
1463 static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1464 {
1465 unsigned long flags;
1466 int i, ok_flag;
1467 int ioaddr = dev->base_addr;
1468 struct hp100_private *lp = netdev_priv(dev);
1469 hp100_ring_t *ringptr;
1470
1471 #ifdef HP100_DEBUG_B
1472 hp100_outw(0x4210, TRACE);
1473 printk("hp100: %s: start_xmit_bm\n", dev->name);
1474 #endif
1475
1476 if (skb == NULL) {
1477 return 0;
1478 }
1479
1480 if (skb->len <= 0)
1481 return 0;
1482
1483 if (skb->len < ETH_ZLEN && lp->chip == HP100_CHIPID_SHASTA) {
1484 skb = skb_padto(skb, ETH_ZLEN);
1485 if (skb == NULL)
1486 return 0;
1487 }
1488
1489 /* Get Tx ring tail pointer */
1490 if (lp->txrtail->next == lp->txrhead) {
1491 /* No memory. */
1492 #ifdef HP100_DEBUG
1493 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1494 #endif
1495 /* not waited long enough since last tx? */
1496 if (jiffies - dev->trans_start < HZ)
1497 return -EAGAIN;
1498
1499 if (hp100_check_lan(dev))
1500 return -EIO;
1501
1502 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1503 /* we have a 100Mb/s adapter but it isn't connected to hub */
1504 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1505 hp100_stop_interface(dev);
1506 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1507 hp100_start_interface(dev);
1508 } else {
1509 spin_lock_irqsave(&lp->lock, flags);
1510 hp100_ints_off(); /* Useful ? Jean II */
1511 i = hp100_sense_lan(dev);
1512 hp100_ints_on();
1513 spin_unlock_irqrestore(&lp->lock, flags);
1514 if (i == HP100_LAN_ERR)
1515 printk("hp100: %s: link down detected\n", dev->name);
1516 else if (lp->lan_type != i) { /* cable change! */
1517 /* it's very hard - all network settings must be changed!!! */
1518 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1519 lp->lan_type = i;
1520 hp100_stop_interface(dev);
1521 if (lp->lan_type == HP100_LAN_100)
1522 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1523 hp100_start_interface(dev);
1524 } else {
1525 printk("hp100: %s: interface reset\n", dev->name);
1526 hp100_stop_interface(dev);
1527 if (lp->lan_type == HP100_LAN_100)
1528 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1529 hp100_start_interface(dev);
1530 }
1531 }
1532
1533 dev->trans_start = jiffies;
1534 return -EAGAIN;
1535 }
1536
1537 /*
1538 * we have to turn int's off before modifying this, otherwise
1539 * a tx_pdl_cleanup could occur at the same time
1540 */
1541 spin_lock_irqsave(&lp->lock, flags);
1542 ringptr = lp->txrtail;
1543 lp->txrtail = ringptr->next;
1544
1545 /* Check whether packet has minimal packet size */
1546 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1547 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1548
1549 ringptr->skb = skb;
1550 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1551 if (lp->chip == HP100_CHIPID_SHASTA) {
1552 /* TODO:Could someone who has the EISA card please check if this works? */
1553 ringptr->pdl[2] = i;
1554 } else { /* Lassen */
1555 /* In the PDL, don't use the padded size but the real packet size: */
1556 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1557 }
1558 /* Conversion to new PCI API : map skbuf data to PCI bus.
1559 * Doc says it's OK for EISA as well - Jean II */
1560 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1561
1562 /* Hand this PDL to the card. */
1563 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1564
1565 lp->txrcommit++;
1566 spin_unlock_irqrestore(&lp->lock, flags);
1567
1568 /* Update statistics */
1569 lp->stats.tx_packets++;
1570 lp->stats.tx_bytes += skb->len;
1571 dev->trans_start = jiffies;
1572
1573 return 0;
1574 }
1575 \f
1576
1577 /* clean_txring checks if packets have been sent by the card by reading
1578 * the TX_PDL register from the performance page and comparing it to the
1579 * number of commited packets. It then frees the skb's of the packets that
1580 * obviously have been sent to the network.
1581 *
1582 * Needs the PERFORMANCE page selected.
1583 */
1584 static void hp100_clean_txring(struct net_device *dev)
1585 {
1586 struct hp100_private *lp = netdev_priv(dev);
1587 int ioaddr = dev->base_addr;
1588 int donecount;
1589
1590 #ifdef HP100_DEBUG_B
1591 hp100_outw(0x4211, TRACE);
1592 printk("hp100: %s: clean txring\n", dev->name);
1593 #endif
1594
1595 /* How many PDLs have been transmitted? */
1596 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1597
1598 #ifdef HP100_DEBUG
1599 if (donecount > MAX_TX_PDL)
1600 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1601 #endif
1602
1603 for (; 0 != donecount; donecount--) {
1604 #ifdef HP100_DEBUG_BM
1605 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1606 dev->name, (u_int) lp->txrhead->skb->data,
1607 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1608 #endif
1609 /* Conversion to new PCI API : NOP */
1610 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1611 dev_kfree_skb_any(lp->txrhead->skb);
1612 lp->txrhead->skb = (void *) NULL;
1613 lp->txrhead = lp->txrhead->next;
1614 lp->txrcommit--;
1615 }
1616 }
1617
1618 /* tx function for slave modes */
1619 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1620 {
1621 unsigned long flags;
1622 int i, ok_flag;
1623 int ioaddr = dev->base_addr;
1624 u_short val;
1625 struct hp100_private *lp = netdev_priv(dev);
1626
1627 #ifdef HP100_DEBUG_B
1628 hp100_outw(0x4212, TRACE);
1629 printk("hp100: %s: start_xmit\n", dev->name);
1630 #endif
1631
1632 if (skb == NULL) {
1633 return 0;
1634 }
1635
1636 if (skb->len <= 0)
1637 return 0;
1638
1639 if (hp100_check_lan(dev))
1640 return -EIO;
1641
1642 /* If there is not enough free memory on the card... */
1643 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1644 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1645 #ifdef HP100_DEBUG
1646 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1647 #endif
1648 /* not waited long enough since last failed tx try? */
1649 if (jiffies - dev->trans_start < HZ) {
1650 #ifdef HP100_DEBUG
1651 printk("hp100: %s: trans_start timing problem\n",
1652 dev->name);
1653 #endif
1654 return -EAGAIN;
1655 }
1656 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1657 /* we have a 100Mb/s adapter but it isn't connected to hub */
1658 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1659 hp100_stop_interface(dev);
1660 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1661 hp100_start_interface(dev);
1662 } else {
1663 spin_lock_irqsave(&lp->lock, flags);
1664 hp100_ints_off(); /* Useful ? Jean II */
1665 i = hp100_sense_lan(dev);
1666 hp100_ints_on();
1667 spin_unlock_irqrestore(&lp->lock, flags);
1668 if (i == HP100_LAN_ERR)
1669 printk("hp100: %s: link down detected\n", dev->name);
1670 else if (lp->lan_type != i) { /* cable change! */
1671 /* it's very hard - all network setting must be changed!!! */
1672 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1673 lp->lan_type = i;
1674 hp100_stop_interface(dev);
1675 if (lp->lan_type == HP100_LAN_100)
1676 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1677 hp100_start_interface(dev);
1678 } else {
1679 printk("hp100: %s: interface reset\n", dev->name);
1680 hp100_stop_interface(dev);
1681 if (lp->lan_type == HP100_LAN_100)
1682 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1683 hp100_start_interface(dev);
1684 mdelay(1);
1685 }
1686 }
1687 dev->trans_start = jiffies;
1688 return -EAGAIN;
1689 }
1690
1691 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1692 #ifdef HP100_DEBUG_TX
1693 printk("hp100: %s: start_xmit: busy\n", dev->name);
1694 #endif
1695 }
1696
1697 spin_lock_irqsave(&lp->lock, flags);
1698 hp100_ints_off();
1699 val = hp100_inw(IRQ_STATUS);
1700 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1701 * when the current packet being transmitted on the wire is completed. */
1702 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1703 #ifdef HP100_DEBUG_TX
1704 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1705 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1706 #endif
1707
1708 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1709 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1710
1711 hp100_outw(i, DATA32); /* tell card the total packet length */
1712 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1713
1714 if (lp->mode == 2) { /* memory mapped */
1715 if (lp->mem_ptr_virt) { /* high pci memory was remapped */
1716 /* Note: The J2585B needs alignment to 32bits here! */
1717 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1718 if (!ok_flag)
1719 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1720 } else {
1721 /* Note: The J2585B needs alignment to 32bits here! */
1722 isa_memcpy_toio(lp->mem_ptr_phys, skb->data, (skb->len + 3) & ~3);
1723 if (!ok_flag)
1724 isa_memset_io(lp->mem_ptr_phys, 0, HP100_MIN_PACKET_SIZE - skb->len);
1725 }
1726 } else { /* programmed i/o */
1727 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1728 (skb->len + 3) >> 2);
1729 if (!ok_flag)
1730 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1731 hp100_outl(0, DATA32);
1732 }
1733
1734 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1735
1736 lp->stats.tx_packets++;
1737 lp->stats.tx_bytes += skb->len;
1738 dev->trans_start = jiffies;
1739 hp100_ints_on();
1740 spin_unlock_irqrestore(&lp->lock, flags);
1741
1742 dev_kfree_skb_any(skb);
1743
1744 #ifdef HP100_DEBUG_TX
1745 printk("hp100: %s: start_xmit: end\n", dev->name);
1746 #endif
1747
1748 return 0;
1749 }
1750 \f
1751
1752 /*
1753 * Receive Function (Non-Busmaster mode)
1754 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1755 * packet counter is non-zero.
1756 * For non-busmaster, this function does the whole work of transfering
1757 * the packet to the host memory and then up to higher layers via skb
1758 * and netif_rx.
1759 */
1760
1761 static void hp100_rx(struct net_device *dev)
1762 {
1763 int packets, pkt_len;
1764 int ioaddr = dev->base_addr;
1765 struct hp100_private *lp = netdev_priv(dev);
1766 u_int header;
1767 struct sk_buff *skb;
1768
1769 #ifdef DEBUG_B
1770 hp100_outw(0x4213, TRACE);
1771 printk("hp100: %s: rx\n", dev->name);
1772 #endif
1773
1774 /* First get indication of received lan packet */
1775 /* RX_PKT_CND indicates the number of packets which have been fully */
1776 /* received onto the card but have not been fully transferred of the card */
1777 packets = hp100_inb(RX_PKT_CNT);
1778 #ifdef HP100_DEBUG_RX
1779 if (packets > 1)
1780 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1781 #endif
1782
1783 while (packets-- > 0) {
1784 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1785 /* really advanced to the next packet. */
1786 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1787 #ifdef HP100_DEBUG_RX
1788 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1789 #endif
1790 }
1791
1792 /* First we get the header, which contains information about the */
1793 /* actual length of the received packet. */
1794 if (lp->mode == 2) { /* memory mapped mode */
1795 if (lp->mem_ptr_virt) /* if memory was remapped */
1796 header = readl(lp->mem_ptr_virt);
1797 else
1798 header = isa_readl(lp->mem_ptr_phys);
1799 } else /* programmed i/o */
1800 header = hp100_inl(DATA32);
1801
1802 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1803
1804 #ifdef HP100_DEBUG_RX
1805 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1806 dev->name, header & HP100_PKT_LEN_MASK,
1807 (header >> 16) & 0xfff8, (header >> 16) & 7);
1808 #endif
1809
1810 /* Now we allocate the skb and transfer the data into it. */
1811 skb = dev_alloc_skb(pkt_len+2);
1812 if (skb == NULL) { /* Not enough memory->drop packet */
1813 #ifdef HP100_DEBUG
1814 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1815 dev->name, pkt_len);
1816 #endif
1817 lp->stats.rx_dropped++;
1818 } else { /* skb successfully allocated */
1819
1820 u_char *ptr;
1821
1822 skb_reserve(skb,2);
1823 skb->dev = dev;
1824
1825 /* ptr to start of the sk_buff data area */
1826 skb_put(skb, pkt_len);
1827 ptr = skb->data;
1828
1829 /* Now transfer the data from the card into that area */
1830 if (lp->mode == 2) {
1831 if (lp->mem_ptr_virt)
1832 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1833 /* Note alignment to 32bit transfers */
1834 else
1835 isa_memcpy_fromio(ptr, lp->mem_ptr_phys, pkt_len);
1836 } else /* io mapped */
1837 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1838
1839 skb->protocol = eth_type_trans(skb, dev);
1840
1841 #ifdef HP100_DEBUG_RX
1842 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1843 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1844 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1845 ptr[9], ptr[10], ptr[11]);
1846 #endif
1847 netif_rx(skb);
1848 dev->last_rx = jiffies;
1849 lp->stats.rx_packets++;
1850 lp->stats.rx_bytes += pkt_len;
1851 }
1852
1853 /* Indicate the card that we have got the packet */
1854 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1855
1856 switch (header & 0x00070000) {
1857 case (HP100_MULTI_ADDR_HASH << 16):
1858 case (HP100_MULTI_ADDR_NO_HASH << 16):
1859 lp->stats.multicast++;
1860 break;
1861 }
1862 } /* end of while(there are packets) loop */
1863 #ifdef HP100_DEBUG_RX
1864 printk("hp100_rx: %s: end\n", dev->name);
1865 #endif
1866 }
1867
1868 /*
1869 * Receive Function for Busmaster Mode
1870 */
1871 static void hp100_rx_bm(struct net_device *dev)
1872 {
1873 int ioaddr = dev->base_addr;
1874 struct hp100_private *lp = netdev_priv(dev);
1875 hp100_ring_t *ptr;
1876 u_int header;
1877 int pkt_len;
1878
1879 #ifdef HP100_DEBUG_B
1880 hp100_outw(0x4214, TRACE);
1881 printk("hp100: %s: rx_bm\n", dev->name);
1882 #endif
1883
1884 #ifdef HP100_DEBUG
1885 if (0 == lp->rxrcommit) {
1886 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1887 return;
1888 } else
1889 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1890 * the cards BM engine */
1891 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1892 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1893 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1894 lp->rxrcommit);
1895 return;
1896 }
1897 #endif
1898
1899 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1900 /*
1901 * The packet was received into the pdl pointed to by lp->rxrhead (
1902 * the oldest pdl in the ring
1903 */
1904
1905 /* First we get the header, which contains information about the */
1906 /* actual length of the received packet. */
1907
1908 ptr = lp->rxrhead;
1909
1910 header = *(ptr->pdl - 1);
1911 pkt_len = (header & HP100_PKT_LEN_MASK);
1912
1913 /* Conversion to new PCI API : NOP */
1914 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1915
1916 #ifdef HP100_DEBUG_BM
1917 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1918 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1919 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1920 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",
1921 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1922 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1923 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1924 #endif
1925
1926 if ((pkt_len >= MIN_ETHER_SIZE) &&
1927 (pkt_len <= MAX_ETHER_SIZE)) {
1928 if (ptr->skb == NULL) {
1929 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1930 /* can happen if we only allocated room for the pdh due to memory shortage. */
1931 lp->stats.rx_dropped++;
1932 } else {
1933 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1934 ptr->skb->protocol =
1935 eth_type_trans(ptr->skb, dev);
1936
1937 netif_rx(ptr->skb); /* Up and away... */
1938
1939 dev->last_rx = jiffies;
1940 lp->stats.rx_packets++;
1941 lp->stats.rx_bytes += pkt_len;
1942 }
1943
1944 switch (header & 0x00070000) {
1945 case (HP100_MULTI_ADDR_HASH << 16):
1946 case (HP100_MULTI_ADDR_NO_HASH << 16):
1947 lp->stats.multicast++;
1948 break;
1949 }
1950 } else {
1951 #ifdef HP100_DEBUG
1952 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1953 #endif
1954 if (ptr->skb != NULL)
1955 dev_kfree_skb_any(ptr->skb);
1956 lp->stats.rx_errors++;
1957 }
1958
1959 lp->rxrhead = lp->rxrhead->next;
1960
1961 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1962 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1963 /* No space for skb, header can still be received. */
1964 #ifdef HP100_DEBUG
1965 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1966 #endif
1967 return;
1968 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1969 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1970 lp->rxrtail = lp->rxrtail->next;
1971 }
1972
1973 }
1974 }
1975
1976 /*
1977 * statistics
1978 */
1979 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1980 {
1981 unsigned long flags;
1982 int ioaddr = dev->base_addr;
1983 struct hp100_private *lp = netdev_priv(dev);
1984
1985 #ifdef HP100_DEBUG_B
1986 hp100_outw(0x4215, TRACE);
1987 #endif
1988
1989 spin_lock_irqsave(&lp->lock, flags);
1990 hp100_ints_off(); /* Useful ? Jean II */
1991 hp100_update_stats(dev);
1992 hp100_ints_on();
1993 spin_unlock_irqrestore(&lp->lock, flags);
1994 return &(lp->stats);
1995 }
1996
1997 static void hp100_update_stats(struct net_device *dev)
1998 {
1999 int ioaddr = dev->base_addr;
2000 u_short val;
2001 struct hp100_private *lp = netdev_priv(dev);
2002
2003 #ifdef HP100_DEBUG_B
2004 hp100_outw(0x4216, TRACE);
2005 printk("hp100: %s: update-stats\n", dev->name);
2006 #endif
2007
2008 /* Note: Statistics counters clear when read. */
2009 hp100_page(MAC_CTRL);
2010 val = hp100_inw(DROPPED) & 0x0fff;
2011 lp->stats.rx_errors += val;
2012 lp->stats.rx_over_errors += val;
2013 val = hp100_inb(CRC);
2014 lp->stats.rx_errors += val;
2015 lp->stats.rx_crc_errors += val;
2016 val = hp100_inb(ABORT);
2017 lp->stats.tx_errors += val;
2018 lp->stats.tx_aborted_errors += val;
2019 hp100_page(PERFORMANCE);
2020 }
2021
2022 static void hp100_misc_interrupt(struct net_device *dev)
2023 {
2024 #ifdef HP100_DEBUG_B
2025 int ioaddr = dev->base_addr;
2026 #endif
2027 struct hp100_private *lp = netdev_priv(dev);
2028
2029 #ifdef HP100_DEBUG_B
2030 int ioaddr = dev->base_addr;
2031 hp100_outw(0x4216, TRACE);
2032 printk("hp100: %s: misc_interrupt\n", dev->name);
2033 #endif
2034
2035 /* Note: Statistics counters clear when read. */
2036 lp->stats.rx_errors++;
2037 lp->stats.tx_errors++;
2038 }
2039
2040 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2041 {
2042 unsigned long flags;
2043
2044 #ifdef HP100_DEBUG_B
2045 hp100_outw(0x4217, TRACE);
2046 printk("hp100: %s: clear_stats\n", dev->name);
2047 #endif
2048
2049 spin_lock_irqsave(&lp->lock, flags);
2050 hp100_page(MAC_CTRL); /* get all statistics bytes */
2051 hp100_inw(DROPPED);
2052 hp100_inb(CRC);
2053 hp100_inb(ABORT);
2054 hp100_page(PERFORMANCE);
2055 spin_unlock_irqrestore(&lp->lock, flags);
2056 }
2057 \f
2058
2059 /*
2060 * multicast setup
2061 */
2062
2063 /*
2064 * Set or clear the multicast filter for this adapter.
2065 */
2066
2067 static void hp100_set_multicast_list(struct net_device *dev)
2068 {
2069 unsigned long flags;
2070 int ioaddr = dev->base_addr;
2071 struct hp100_private *lp = netdev_priv(dev);
2072
2073 #ifdef HP100_DEBUG_B
2074 hp100_outw(0x4218, TRACE);
2075 printk("hp100: %s: set_mc_list\n", dev->name);
2076 #endif
2077
2078 spin_lock_irqsave(&lp->lock, flags);
2079 hp100_ints_off();
2080 hp100_page(MAC_CTRL);
2081 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2082
2083 if (dev->flags & IFF_PROMISC) {
2084 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2085 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2086 memset(&lp->hash_bytes, 0xff, 8);
2087 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2088 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2089 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2090 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2091 if (dev->flags & IFF_ALLMULTI) {
2092 /* set hash filter to receive all multicast packets */
2093 memset(&lp->hash_bytes, 0xff, 8);
2094 } else {
2095 int i, j, idx;
2096 u_char *addrs;
2097 struct dev_mc_list *dmi;
2098
2099 memset(&lp->hash_bytes, 0x00, 8);
2100 #ifdef HP100_DEBUG
2101 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2102 #endif
2103 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2104 addrs = dmi->dmi_addr;
2105 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2106 #ifdef HP100_DEBUG
2107 printk("hp100: %s: multicast = %02x:%02x:%02x:%02x:%02x:%02x, ",
2108 dev->name, addrs[0], addrs[1], addrs[2],
2109 addrs[3], addrs[4], addrs[5]);
2110 #endif
2111 for (j = idx = 0; j < 6; j++) {
2112 idx ^= *addrs++ & 0x3f;
2113 printk(":%02x:", idx);
2114 }
2115 #ifdef HP100_DEBUG
2116 printk("idx = %i\n", idx);
2117 #endif
2118 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2119 }
2120 }
2121 }
2122 #else
2123 memset(&lp->hash_bytes, 0xff, 8);
2124 #endif
2125 } else {
2126 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2127 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2128 memset(&lp->hash_bytes, 0x00, 8);
2129 }
2130
2131 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2132 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2133 int i;
2134
2135 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2136 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2137 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2138
2139 hp100_page(MAC_ADDRESS);
2140 for (i = 0; i < 8; i++)
2141 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2142 #ifdef HP100_DEBUG
2143 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2144 dev->name, lp->mac1_mode, lp->mac2_mode,
2145 lp->hash_bytes[0], lp->hash_bytes[1],
2146 lp->hash_bytes[2], lp->hash_bytes[3],
2147 lp->hash_bytes[4], lp->hash_bytes[5],
2148 lp->hash_bytes[6], lp->hash_bytes[7]);
2149 #endif
2150
2151 if (lp->lan_type == HP100_LAN_100) {
2152 #ifdef HP100_DEBUG
2153 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2154 #endif
2155 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2156 }
2157 } else {
2158 int i;
2159 u_char old_hash_bytes[8];
2160
2161 hp100_page(MAC_ADDRESS);
2162 for (i = 0; i < 8; i++)
2163 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2164 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2165 for (i = 0; i < 8; i++)
2166 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2167 #ifdef HP100_DEBUG
2168 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2169 dev->name, lp->hash_bytes[0],
2170 lp->hash_bytes[1], lp->hash_bytes[2],
2171 lp->hash_bytes[3], lp->hash_bytes[4],
2172 lp->hash_bytes[5], lp->hash_bytes[6],
2173 lp->hash_bytes[7]);
2174 #endif
2175
2176 if (lp->lan_type == HP100_LAN_100) {
2177 #ifdef HP100_DEBUG
2178 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2179 #endif
2180 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2181 }
2182 }
2183 }
2184
2185 hp100_page(MAC_CTRL);
2186 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2187 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2188
2189 hp100_page(PERFORMANCE);
2190 hp100_ints_on();
2191 spin_unlock_irqrestore(&lp->lock, flags);
2192 }
2193
2194 /*
2195 * hardware interrupt handling
2196 */
2197
2198 static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs)
2199 {
2200 struct net_device *dev = (struct net_device *) dev_id;
2201 struct hp100_private *lp = netdev_priv(dev);
2202
2203 int ioaddr;
2204 u_int val;
2205
2206 if (dev == NULL)
2207 return IRQ_NONE;
2208 ioaddr = dev->base_addr;
2209
2210 spin_lock(&lp->lock);
2211
2212 hp100_ints_off();
2213
2214 #ifdef HP100_DEBUG_B
2215 hp100_outw(0x4219, TRACE);
2216 #endif
2217
2218 /* hp100_page( PERFORMANCE ); */
2219 val = hp100_inw(IRQ_STATUS);
2220 #ifdef HP100_DEBUG_IRQ
2221 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2222 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2223 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2224 #endif
2225
2226 if (val == 0) { /* might be a shared interrupt */
2227 spin_unlock(&lp->lock);
2228 hp100_ints_on();
2229 return IRQ_NONE;
2230 }
2231 /* We're only interested in those interrupts we really enabled. */
2232 /* val &= hp100_inw( IRQ_MASK ); */
2233
2234 /*
2235 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2236 * is considered executed whenever the RX_PDL data structure is no longer
2237 * needed.
2238 */
2239 if (val & HP100_RX_PDL_FILL_COMPL) {
2240 if (lp->mode == 1)
2241 hp100_rx_bm(dev);
2242 else {
2243 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2244 }
2245 }
2246
2247 /*
2248 * The RX_PACKET interrupt is set, when the receive packet counter is
2249 * non zero. We use this interrupt for receiving in slave mode. In
2250 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2251 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2252 * we somehow have missed a rx_pdl_fill_compl interrupt.
2253 */
2254
2255 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2256 if (lp->mode != 1) /* non busmaster */
2257 hp100_rx(dev);
2258 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2259 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2260 hp100_rx_bm(dev);
2261 }
2262 }
2263
2264 /*
2265 * Ack. that we have noticed the interrupt and thereby allow next one.
2266 * Note that this is now done after the slave rx function, since first
2267 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2268 * on the J2573.
2269 */
2270 hp100_outw(val, IRQ_STATUS);
2271
2272 /*
2273 * RX_ERROR is set when a packet is dropped due to no memory resources on
2274 * the card or when a RCV_ERR occurs.
2275 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2276 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2277 */
2278 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2279 #ifdef HP100_DEBUG_IRQ
2280 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2281 #endif
2282 hp100_update_stats(dev);
2283 if (lp->mode == 1) {
2284 hp100_rxfill(dev);
2285 hp100_clean_txring(dev);
2286 }
2287 }
2288
2289 /*
2290 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2291 */
2292 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2293 hp100_rxfill(dev);
2294
2295 /*
2296 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2297 * is completed
2298 */
2299 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2300 hp100_clean_txring(dev);
2301
2302 /*
2303 * MISC_ERROR is set when either the LAN link goes down or a detected
2304 * bus error occurs.
2305 */
2306 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2307 #ifdef HP100_DEBUG_IRQ
2308 printk
2309 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2310 dev->name);
2311 #endif
2312 if (lp->mode == 1) {
2313 hp100_clean_txring(dev);
2314 hp100_rxfill(dev);
2315 }
2316 hp100_misc_interrupt(dev);
2317 }
2318
2319 spin_unlock(&lp->lock);
2320 hp100_ints_on();
2321 return IRQ_HANDLED;
2322 }
2323
2324 /*
2325 * some misc functions
2326 */
2327
2328 static void hp100_start_interface(struct net_device *dev)
2329 {
2330 unsigned long flags;
2331 int ioaddr = dev->base_addr;
2332 struct hp100_private *lp = netdev_priv(dev);
2333
2334 #ifdef HP100_DEBUG_B
2335 hp100_outw(0x4220, TRACE);
2336 printk("hp100: %s: hp100_start_interface\n", dev->name);
2337 #endif
2338
2339 spin_lock_irqsave(&lp->lock, flags);
2340
2341 /* Ensure the adapter does not want to request an interrupt when */
2342 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2343 hp100_page(PERFORMANCE);
2344 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2345 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2346 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2347 OPTION_LSW);
2348 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2349 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2350
2351 if (lp->mode == 1) {
2352 /* Make sure BM bit is set... */
2353 hp100_page(HW_MAP);
2354 hp100_orb(HP100_BM_MASTER, BM);
2355 hp100_rxfill(dev);
2356 } else if (lp->mode == 2) {
2357 /* Enable memory mapping. Note: Don't do this when busmaster. */
2358 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2359 }
2360
2361 hp100_page(PERFORMANCE);
2362 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2363 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2364
2365 /* enable a few interrupts: */
2366 if (lp->mode == 1) { /* busmaster mode */
2367 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2368 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2369 /* HP100_RX_PACKET | */
2370 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2371 /* HP100_TX_PDA_ZERO | */
2372 HP100_TX_COMPLETE |
2373 /* HP100_MISC_ERROR | */
2374 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2375 } else {
2376 hp100_outw(HP100_RX_PACKET |
2377 HP100_RX_ERROR | HP100_SET_HB |
2378 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2379 }
2380
2381 /* Note : before hp100_set_multicast_list(), because it will play with
2382 * spinlock itself... Jean II */
2383 spin_unlock_irqrestore(&lp->lock, flags);
2384
2385 /* Enable MAC Tx and RX, set MAC modes, ... */
2386 hp100_set_multicast_list(dev);
2387 }
2388
2389 static void hp100_stop_interface(struct net_device *dev)
2390 {
2391 struct hp100_private *lp = netdev_priv(dev);
2392 int ioaddr = dev->base_addr;
2393 u_int val;
2394
2395 #ifdef HP100_DEBUG_B
2396 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2397 hp100_outw(0x4221, TRACE);
2398 #endif
2399
2400 if (lp->mode == 1)
2401 hp100_BM_shutdown(dev);
2402 else {
2403 /* Note: MMAP_DIS will be reenabled by start_interface */
2404 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2405 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2406 OPTION_LSW);
2407 val = hp100_inw(OPTION_LSW);
2408
2409 hp100_page(MAC_CTRL);
2410 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2411
2412 if (!(val & HP100_HW_RST))
2413 return; /* If reset, imm. return ... */
2414 /* ... else: busy wait until idle */
2415 for (val = 0; val < 6000; val++)
2416 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2417 hp100_page(PERFORMANCE);
2418 return;
2419 }
2420 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2421 hp100_page(PERFORMANCE);
2422 }
2423 }
2424
2425 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2426 {
2427 int i;
2428 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2429
2430 #ifdef HP100_DEBUG_B
2431 hp100_outw(0x4222, TRACE);
2432 #endif
2433
2434 hp100_page(EEPROM_CTRL);
2435 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2436 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2437 for (i = 0; i < 10000; i++)
2438 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2439 return;
2440 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2441 }
2442
2443 /* Sense connection status.
2444 * return values: LAN_10 - Connected to 10Mbit/s network
2445 * LAN_100 - Connected to 100Mbit/s network
2446 * LAN_ERR - not connected or 100Mbit/s Hub down
2447 */
2448 static int hp100_sense_lan(struct net_device *dev)
2449 {
2450 int ioaddr = dev->base_addr;
2451 u_short val_VG, val_10;
2452 struct hp100_private *lp = netdev_priv(dev);
2453
2454 #ifdef HP100_DEBUG_B
2455 hp100_outw(0x4223, TRACE);
2456 #endif
2457
2458 hp100_page(MAC_CTRL);
2459 val_10 = hp100_inb(10_LAN_CFG_1);
2460 val_VG = hp100_inb(VG_LAN_CFG_1);
2461 hp100_page(PERFORMANCE);
2462 #ifdef HP100_DEBUG
2463 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2464 dev->name, val_VG, val_10);
2465 #endif
2466
2467 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2468 return HP100_LAN_10;
2469
2470 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2471 /*
2472 * This can be overriden by dos utility, so if this has no effect,
2473 * perhaps you need to download that utility from HP and set card
2474 * back to "auto detect".
2475 */
2476 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2477 hp100_page(MAC_CTRL);
2478 hp100_outb(val_10, 10_LAN_CFG_1);
2479 hp100_page(PERFORMANCE);
2480 return HP100_LAN_COAX;
2481 }
2482
2483 /* Those cards don't have a 100 Mbit connector */
2484 if ( !strcmp(lp->id, "HWP1920") ||
2485 (lp->pci_dev &&
2486 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2487 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2488 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2489 return HP100_LAN_ERR;
2490
2491 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2492 return HP100_LAN_100;
2493 return HP100_LAN_ERR;
2494 }
2495
2496 static int hp100_down_vg_link(struct net_device *dev)
2497 {
2498 struct hp100_private *lp = netdev_priv(dev);
2499 int ioaddr = dev->base_addr;
2500 unsigned long time;
2501 long savelan, newlan;
2502
2503 #ifdef HP100_DEBUG_B
2504 hp100_outw(0x4224, TRACE);
2505 printk("hp100: %s: down_vg_link\n", dev->name);
2506 #endif
2507
2508 hp100_page(MAC_CTRL);
2509 time = jiffies + (HZ / 4);
2510 do {
2511 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2512 break;
2513 if (!in_interrupt()) {
2514 set_current_state(TASK_INTERRUPTIBLE);
2515 schedule_timeout(1);
2516 }
2517 } while (time_after(time, jiffies));
2518
2519 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2520 return 0;
2521
2522 /* Drop the VG Link by clearing the link up cmd and load addr. */
2523
2524 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2525 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2526
2527 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2528 time = jiffies + (HZ / 2);
2529 do {
2530 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2531 break;
2532 if (!in_interrupt()) {
2533 set_current_state(TASK_INTERRUPTIBLE);
2534 schedule_timeout(1);
2535 }
2536 } while (time_after(time, jiffies));
2537
2538 #ifdef HP100_DEBUG
2539 if (time_after_eq(jiffies, time))
2540 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2541 #endif
2542
2543 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2544 /* logout under traffic (even though all the status bits are cleared), */
2545 /* do this workaround to get the Rev 1 MAC in its idle state */
2546 if (lp->chip == HP100_CHIPID_LASSEN) {
2547 /* Reset VG MAC to insure it leaves the logoff state even if */
2548 /* the Hub is still emitting tones */
2549 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2550 udelay(1500); /* wait for >1ms */
2551 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2552 udelay(1500);
2553 }
2554
2555 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2556 /* to get the VG mac to full reset. This is not req.d with later chips */
2557 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2558 /* selected again! This will be left to the connect hub function to */
2559 /* perform if desired. */
2560 if (lp->chip == HP100_CHIPID_LASSEN) {
2561 /* Have to write to 10 and 100VG control registers simultaneously */
2562 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2563 newlan &= ~(HP100_VG_SEL << 16);
2564 newlan |= (HP100_DOT3_MAC) << 8;
2565 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2566 hp100_outl(newlan, 10_LAN_CFG_1);
2567
2568 /* Conditionally stall for 5sec on VG selected. */
2569 time = jiffies + (HZ * 5);
2570 do {
2571 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2572 break;
2573 if (!in_interrupt()) {
2574 set_current_state(TASK_INTERRUPTIBLE);
2575 schedule_timeout(1);
2576 }
2577 } while (time_after(time, jiffies));
2578
2579 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2580 hp100_outl(savelan, 10_LAN_CFG_1);
2581 }
2582
2583 time = jiffies + (3 * HZ); /* Timeout 3s */
2584 do {
2585 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2586 break;
2587 if (!in_interrupt()) {
2588 set_current_state(TASK_INTERRUPTIBLE);
2589 schedule_timeout(1);
2590 }
2591 } while (time_after(time, jiffies));
2592
2593 if (time_before_eq(time, jiffies)) {
2594 #ifdef HP100_DEBUG
2595 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2596 #endif
2597 return -EIO;
2598 }
2599
2600 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2601 do {
2602 if (!in_interrupt()) {
2603 set_current_state(TASK_INTERRUPTIBLE);
2604 schedule_timeout(1);
2605 }
2606 } while (time_after(time, jiffies));
2607
2608 return 0;
2609 }
2610
2611 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2612 {
2613 int ioaddr = dev->base_addr;
2614 struct hp100_private *lp = netdev_priv(dev);
2615 u_short val = 0;
2616 unsigned long time;
2617 int startst;
2618
2619 #ifdef HP100_DEBUG_B
2620 hp100_outw(0x4225, TRACE);
2621 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2622 #endif
2623
2624 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2625 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2626 * promiscuous mode change)
2627 */
2628 hp100_page(MAC_CTRL);
2629 startst = hp100_inb(VG_LAN_CFG_1);
2630 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2631 #ifdef HP100_DEBUG_TRAINING
2632 printk("hp100: %s: Start training\n", dev->name);
2633 #endif
2634
2635 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2636 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2637
2638 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2639 /* entry then temporarily put them into force 100Mbit mode */
2640 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2641 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2642
2643 /* Drop the VG link by zeroing Link Up Command and Load Address */
2644 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2645
2646 #ifdef HP100_DEBUG_TRAINING
2647 printk("hp100: %s: Bring down the link\n", dev->name);
2648 #endif
2649
2650 /* Wait for link to drop */
2651 time = jiffies + (HZ / 10);
2652 do {
2653 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2654 break;
2655 if (!in_interrupt()) {
2656 set_current_state(TASK_INTERRUPTIBLE);
2657 schedule_timeout(1);
2658 }
2659 } while (time_after(time, jiffies));
2660
2661 /* Start an addressed training and optionally request promiscuous port */
2662 if ((dev->flags) & IFF_PROMISC) {
2663 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2664 if (lp->chip == HP100_CHIPID_LASSEN)
2665 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2666 } else {
2667 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2668 /* For ETR parts we need to reset the prom. bit in the training
2669 * register, otherwise promiscious mode won't be disabled.
2670 */
2671 if (lp->chip == HP100_CHIPID_LASSEN) {
2672 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2673 }
2674 }
2675
2676 /* With ETR parts, frame format request bits can be set. */
2677 if (lp->chip == HP100_CHIPID_LASSEN)
2678 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2679
2680 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2681
2682 /* Note: Next wait could be omitted for Hood and earlier chips under */
2683 /* certain circumstances */
2684 /* TODO: check if hood/earlier and skip wait. */
2685
2686 /* Wait for either short timeout for VG tones or long for login */
2687 /* Wait for the card hardware to signalise link cable status ok... */
2688 hp100_page(MAC_CTRL);
2689 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2690 do {
2691 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2692 break;
2693 if (!in_interrupt()) {
2694 set_current_state(TASK_INTERRUPTIBLE);
2695 schedule_timeout(1);
2696 }
2697 } while (time_before(jiffies, time));
2698
2699 if (time_after_eq(jiffies, time)) {
2700 #ifdef HP100_DEBUG_TRAINING
2701 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2702 #endif
2703 } else {
2704 #ifdef HP100_DEBUG_TRAINING
2705 printk
2706 ("hp100: %s: HUB tones detected. Trying to train.\n",
2707 dev->name);
2708 #endif
2709
2710 time = jiffies + (2 * HZ); /* again a timeout */
2711 do {
2712 val = hp100_inb(VG_LAN_CFG_1);
2713 if ((val & (HP100_LINK_UP_ST))) {
2714 #ifdef HP100_DEBUG_TRAINING
2715 printk("hp100: %s: Passed training.\n", dev->name);
2716 #endif
2717 break;
2718 }
2719 if (!in_interrupt()) {
2720 set_current_state(TASK_INTERRUPTIBLE);
2721 schedule_timeout(1);
2722 }
2723 } while (time_after(time, jiffies));
2724 }
2725
2726 /* If LINK_UP_ST is set, then we are logged into the hub. */
2727 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2728 #ifdef HP100_DEBUG_TRAINING
2729 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2730 if (lp->chip == HP100_CHIPID_LASSEN) {
2731 val = hp100_inw(TRAIN_ALLOW);
2732 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2733 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2734 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2735 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2736 }
2737 #endif
2738 } else {
2739 /* If LINK_UP_ST is not set, login was not successful */
2740 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2741 if (lp->chip == HP100_CHIPID_LASSEN) {
2742 /* Check allowed Register to find out why there is a problem. */
2743 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2744 #ifdef HP100_DEBUG_TRAINING
2745 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2746 #endif
2747 if (val & HP100_MALLOW_ACCDENIED)
2748 printk("hp100: %s: HUB access denied.\n", dev->name);
2749 if (val & HP100_MALLOW_CONFIGURE)
2750 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2751 if (val & HP100_MALLOW_DUPADDR)
2752 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2753 }
2754 }
2755
2756 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2757 /* to auto-select mode */
2758
2759 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2760 hp100_page(MAC_CTRL);
2761 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2762 }
2763
2764 val = hp100_inb(VG_LAN_CFG_1);
2765
2766 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2767 hp100_page(PERFORMANCE);
2768 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2769
2770 if (val & HP100_LINK_UP_ST)
2771 return (0); /* login was ok */
2772 else {
2773 printk("hp100: %s: Training failed.\n", dev->name);
2774 hp100_down_vg_link(dev);
2775 return -EIO;
2776 }
2777 }
2778 /* no forced relogin & already link there->no training. */
2779 return -EIO;
2780 }
2781
2782 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2783 {
2784 int ioaddr = dev->base_addr;
2785 struct hp100_private *lp = netdev_priv(dev);
2786
2787 #ifdef HP100_DEBUG_B
2788 hp100_outw(0x4226, TRACE);
2789 printk("hp100: %s: cascade_reset\n", dev->name);
2790 #endif
2791
2792 if (enable) {
2793 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2794 if (lp->chip == HP100_CHIPID_LASSEN) {
2795 /* Lassen requires a PCI transmit fifo reset */
2796 hp100_page(HW_MAP);
2797 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2798 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2799 /* Wait for min. 300 ns */
2800 /* we can't use jiffies here, because it may be */
2801 /* that we have disabled the timer... */
2802 udelay(400);
2803 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2804 hp100_page(PERFORMANCE);
2805 }
2806 } else { /* bring out of reset */
2807 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2808 udelay(400);
2809 hp100_page(PERFORMANCE);
2810 }
2811 }
2812
2813 #ifdef HP100_DEBUG
2814 void hp100_RegisterDump(struct net_device *dev)
2815 {
2816 int ioaddr = dev->base_addr;
2817 int Page;
2818 int Register;
2819
2820 /* Dump common registers */
2821 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2822 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2823 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2824 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2825 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2826
2827 /* Dump paged registers */
2828 for (Page = 0; Page < 8; Page++) {
2829 /* Dump registers */
2830 printk("page: 0x%.2x\n", Page);
2831 outw(Page, ioaddr + 0x02);
2832 for (Register = 0x8; Register < 0x22; Register += 2) {
2833 /* Display Register contents except data port */
2834 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2835 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2836 }
2837 }
2838 }
2839 hp100_page(PERFORMANCE);
2840 }
2841 #endif
2842
2843
2844 static void cleanup_dev(struct net_device *d)
2845 {
2846 struct hp100_private *p = netdev_priv(d);
2847
2848 unregister_netdev(d);
2849 release_region(d->base_addr, HP100_REGION_SIZE);
2850
2851 if (p->mode == 1) /* busmaster */
2852 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2853 p->page_vaddr_algn,
2854 virt_to_whatever(d, p->page_vaddr_algn));
2855 if (p->mem_ptr_virt)
2856 iounmap(p->mem_ptr_virt);
2857
2858 free_netdev(d);
2859 }
2860
2861 #ifdef CONFIG_EISA
2862 static int __init hp100_eisa_probe (struct device *gendev)
2863 {
2864 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2865 struct eisa_device *edev = to_eisa_device(gendev);
2866 int err;
2867
2868 if (!dev)
2869 return -ENOMEM;
2870
2871 SET_MODULE_OWNER(dev);
2872 SET_NETDEV_DEV(dev, &edev->dev);
2873
2874 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2875 if (err)
2876 goto out1;
2877
2878 err = register_netdev(dev);
2879 if (err)
2880 goto out2;
2881
2882 #ifdef HP100_DEBUG
2883 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2884 dev->base_addr);
2885 #endif
2886 gendev->driver_data = dev;
2887 return 0;
2888 out2:
2889 release_region(dev->base_addr, HP100_REGION_SIZE);
2890 out1:
2891 free_netdev(dev);
2892 return err;
2893 }
2894
2895 static int __devexit hp100_eisa_remove (struct device *gendev)
2896 {
2897 struct net_device *dev = gendev->driver_data;
2898 cleanup_dev(dev);
2899 return 0;
2900 }
2901
2902 static struct eisa_driver hp100_eisa_driver = {
2903 .id_table = hp100_eisa_tbl,
2904 .driver = {
2905 .name = "hp100",
2906 .probe = hp100_eisa_probe,
2907 .remove = __devexit_p (hp100_eisa_remove),
2908 }
2909 };
2910 #endif
2911
2912 #ifdef CONFIG_PCI
2913 static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2914 const struct pci_device_id *ent)
2915 {
2916 struct net_device *dev;
2917 int ioaddr;
2918 u_short pci_command;
2919 int err;
2920
2921 if (pci_enable_device(pdev))
2922 return -ENODEV;
2923
2924 dev = alloc_etherdev(sizeof(struct hp100_private));
2925 if (!dev) {
2926 err = -ENOMEM;
2927 goto out0;
2928 }
2929
2930 SET_MODULE_OWNER(dev);
2931 SET_NETDEV_DEV(dev, &pdev->dev);
2932
2933 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2934 if (!(pci_command & PCI_COMMAND_IO)) {
2935 #ifdef HP100_DEBUG
2936 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2937 #endif
2938 pci_command |= PCI_COMMAND_IO;
2939 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2940 }
2941
2942 if (!(pci_command & PCI_COMMAND_MASTER)) {
2943 #ifdef HP100_DEBUG
2944 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2945 #endif
2946 pci_command |= PCI_COMMAND_MASTER;
2947 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2948 }
2949
2950 ioaddr = pci_resource_start(pdev, 0);
2951 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2952 if (err)
2953 goto out1;
2954 err = register_netdev(dev);
2955 if (err)
2956 goto out2;
2957
2958 #ifdef HP100_DEBUG
2959 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2960 #endif
2961 pci_set_drvdata(pdev, dev);
2962 return 0;
2963 out2:
2964 release_region(dev->base_addr, HP100_REGION_SIZE);
2965 out1:
2966 free_netdev(dev);
2967 out0:
2968 pci_disable_device(pdev);
2969 return err;
2970 }
2971
2972 static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2973 {
2974 struct net_device *dev = pci_get_drvdata(pdev);
2975
2976 cleanup_dev(dev);
2977 pci_disable_device(pdev);
2978 }
2979
2980
2981 static struct pci_driver hp100_pci_driver = {
2982 .name = "hp100",
2983 .id_table = hp100_pci_tbl,
2984 .probe = hp100_pci_probe,
2985 .remove = __devexit_p(hp100_pci_remove),
2986 };
2987 #endif
2988
2989 /*
2990 * module section
2991 */
2992
2993 MODULE_LICENSE("GPL");
2994 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, "
2995 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2996 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2997
2998 /*
2999 * Note: to register three isa devices, use:
3000 * option hp100 hp100_port=0,0,0
3001 * to register one card at io 0x280 as eth239, use:
3002 * option hp100 hp100_port=0x280
3003 */
3004 #if defined(MODULE) && defined(CONFIG_ISA)
3005 #define HP100_DEVICES 5
3006 /* Parameters set by insmod */
3007 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
3008 module_param_array(hp100_port, int, NULL, 0);
3009
3010 /* List of devices */
3011 static struct net_device *hp100_devlist[HP100_DEVICES];
3012
3013 static int __init hp100_isa_init(void)
3014 {
3015 struct net_device *dev;
3016 int i, err, cards = 0;
3017
3018 /* Don't autoprobe ISA bus */
3019 if (hp100_port[0] == 0)
3020 return -ENODEV;
3021
3022 /* Loop on all possible base addresses */
3023 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
3024 dev = alloc_etherdev(sizeof(struct hp100_private));
3025 if (!dev) {
3026 printk(KERN_WARNING "hp100: no memory for network device\n");
3027 while (cards > 0)
3028 cleanup_dev(hp100_devlist[--cards]);
3029
3030 return -ENOMEM;
3031 }
3032 SET_MODULE_OWNER(dev);
3033
3034 err = hp100_isa_probe(dev, hp100_port[i]);
3035 if (!err) {
3036 err = register_netdev(dev);
3037 if (!err)
3038 hp100_devlist[cards++] = dev;
3039 else
3040 release_region(dev->base_addr, HP100_REGION_SIZE);
3041 }
3042
3043 if (err)
3044 free_netdev(dev);
3045 }
3046
3047 return cards > 0 ? 0 : -ENODEV;
3048 }
3049
3050 static void __exit hp100_isa_cleanup(void)
3051 {
3052 int i;
3053
3054 for (i = 0; i < HP100_DEVICES; i++) {
3055 struct net_device *dev = hp100_devlist[i];
3056 if (dev)
3057 cleanup_dev(dev);
3058 }
3059 }
3060 #else
3061 #define hp100_isa_init() (0)
3062 #define hp100_isa_cleanup() do { } while(0)
3063 #endif
3064
3065 static int __init hp100_module_init(void)
3066 {
3067 int err;
3068
3069 err = hp100_isa_init();
3070 if (err && err != -ENODEV)
3071 goto out;
3072 #ifdef CONFIG_EISA
3073 err = eisa_driver_register(&hp100_eisa_driver);
3074 if (err && err != -ENODEV)
3075 goto out2;
3076 #endif
3077 #ifdef CONFIG_PCI
3078 err = pci_module_init(&hp100_pci_driver);
3079 if (err && err != -ENODEV)
3080 goto out3;
3081 #endif
3082 out:
3083 return err;
3084 out3:
3085 #ifdef CONFIG_EISA
3086 eisa_driver_unregister (&hp100_eisa_driver);
3087 out2:
3088 #endif
3089 hp100_isa_cleanup();
3090 goto out;
3091 }
3092
3093
3094 static void __exit hp100_module_exit(void)
3095 {
3096 hp100_isa_cleanup();
3097 #ifdef CONFIG_EISA
3098 eisa_driver_unregister (&hp100_eisa_driver);
3099 #endif
3100 #ifdef CONFIG_PCI
3101 pci_unregister_driver (&hp100_pci_driver);
3102 #endif
3103 }
3104
3105 module_init(hp100_module_init)
3106 module_exit(hp100_module_exit)
3107
3108
3109 /*
3110 * Local variables:
3111 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"
3112 * c-indent-level: 2
3113 * tab-width: 8
3114 * End:
3115 */
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