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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
[deliverable/linux.git] / drivers / net / hp100.c
CommitLineData
1da177e4 1/*
6aa20a22 2** hp100.c
1da177e4
LT		 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>
6aa20a22 8** Extended for new busmaster capable chipsets by
1da177e4
LT		 9** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
10**
c1017a4c 11** Maintained by: Jaroslav Kysela <perex@perex.cz>
6aa20a22 12**
1da177e4
LT		 13** This driver has only been tested with
14** -- HP J2585B 10/100 Mbit/s PCI Busmaster
6aa20a22 15** -- HP J2585A 10/100 Mbit/s PCI
31df7b7f
PM		 16** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
17** -- HP J2973A 10 Mbit/s PCI 10base-T
1da177e4
LT		 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
6aa20a22 21**
1da177e4
LT		 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
6aa20a22 68**
1da177e4
LT		 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)
6aa20a22 76** - little changes in hp100_sense_lan routine
1da177e4
LT		 77** - added support for Coax and AUI (J2970)
78** - fix for multiple cards and hp100_mode parameter (insmod)
6aa20a22 79** - fix for shared IRQ
1da177e4
LT		 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
1da177e4
LT		 99#include <linux/module.h>
100#include <linux/kernel.h>
101#include <linux/string.h>
102#include <linux/errno.h>
103#include <linux/ioport.h>
104#include <linux/slab.h>
105#include <linux/interrupt.h>
106#include <linux/eisa.h>
107#include <linux/pci.h>
1e7f0bd8 108#include <linux/dma-mapping.h>
1da177e4
LT		 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>
1da177e4
LT		 114#include <linux/delay.h>
115#include <linux/init.h>
116#include <linux/bitops.h>
ff5688ae 117#include <linux/jiffies.h>
1da177e4
LT		 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
151struct 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 */
7525d4bf 191#ifdef CONFIG_ISA
1da177e4
LT		 192static const char *hp100_isa_tbl[] = {
193 "HWPF150", /* HP J2573 rev A */
194 "HWP1950", /* HP J2573 */
195};
2c81fbc4 196#endif
1da177e4
LT		 197
198#ifdef CONFIG_EISA
199static struct eisa_device_id hp100_eisa_tbl[] = {
200 { "HWPF180" }, /* HP J2577 rev A */
201 { "HWP1920" }, /* HP 27248B */
202 { "HWP1940" }, /* HP J2577 */
203 { "HWP1990" }, /* HP J2577 */
204 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
205 { "CPX0401" }, /* FreedomLine 100/VG */
206 { "" } /* Mandatory final entry ! */
207};
208MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
209#endif
210
211#ifdef CONFIG_PCI
212static struct pci_device_id hp100_pci_tbl[] = {
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
217 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
218 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
219/* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
220 {} /* Terminating entry */
221};
222MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
223#endif
224
225static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
226static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
227static int hp100_mode = 1;
228
229module_param(hp100_rx_ratio, int, 0);
230module_param(hp100_priority_tx, int, 0);
231module_param(hp100_mode, int, 0);
232
233/*
234 * prototypes
235 */
236
237static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
238 struct pci_dev *pci_dev);
239
240
241static int hp100_open(struct net_device *dev);
242static int hp100_close(struct net_device *dev);
243static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
244static int hp100_start_xmit_bm(struct sk_buff *skb,
245 struct net_device *dev);
246static void hp100_rx(struct net_device *dev);
247static struct net_device_stats *hp100_get_stats(struct net_device *dev);
248static void hp100_misc_interrupt(struct net_device *dev);
249static void hp100_update_stats(struct net_device *dev);
250static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
251static void hp100_set_multicast_list(struct net_device *dev);
7d12e780 252static irqreturn_t hp100_interrupt(int irq, void *dev_id);
1da177e4
LT		 253static void hp100_start_interface(struct net_device *dev);
254static void hp100_stop_interface(struct net_device *dev);
255static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
256static int hp100_sense_lan(struct net_device *dev);
257static int hp100_login_to_vg_hub(struct net_device *dev,
258 u_short force_relogin);
259static int hp100_down_vg_link(struct net_device *dev);
260static void hp100_cascade_reset(struct net_device *dev, u_short enable);
261static void hp100_BM_shutdown(struct net_device *dev);
262static void hp100_mmuinit(struct net_device *dev);
263static void hp100_init_pdls(struct net_device *dev);
264static int hp100_init_rxpdl(struct net_device *dev,
265 register hp100_ring_t * ringptr,
266 register u_int * pdlptr);
267static int hp100_init_txpdl(struct net_device *dev,
268 register hp100_ring_t * ringptr,
269 register u_int * pdlptr);
270static void hp100_rxfill(struct net_device *dev);
271static void hp100_hwinit(struct net_device *dev);
272static void hp100_clean_txring(struct net_device *dev);
273#ifdef HP100_DEBUG
274static void hp100_RegisterDump(struct net_device *dev);
275#endif
276
277/* Conversion to new PCI API :
278 * Convert an address in a kernel buffer to a bus/phys/dma address.
279 * This work *only* for memory fragments part of lp->page_vaddr,
280 * because it was properly DMA allocated via pci_alloc_consistent(),
943ffb58 281 * so we just need to "retrieve" the original mapping to bus/phys/dma
1da177e4
LT		 282 * address - Jean II */
283static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
284{
285 struct hp100_private *lp = netdev_priv(dev);
286 return ((u_long) ptr) + lp->whatever_offset;
287}
288
289static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
290{
6aa20a22 291 return pci_map_single(lp->pci_dev, data,
1da177e4
LT		 292 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
293}
294
295/* TODO: This function should not really be needed in a good design... */
296static void wait(void)
297{
298 mdelay(1);
299}
300
301/*
302 * probe functions
303 * These functions should - if possible - avoid doing write operations
304 * since this could cause problems when the card is not installed.
305 */
306
307/*
308 * Read board id and convert to string.
309 * Effectively same code as decode_eisa_sig
310 */
311static __devinit const char *hp100_read_id(int ioaddr)
312{
313 int i;
314 static char str[HP100_SIG_LEN];
315 unsigned char sig[4], sum;
316 unsigned short rev;
317
318 hp100_page(ID_MAC_ADDR);
319 sum = 0;
320 for (i = 0; i < 4; i++) {
321 sig[i] = hp100_inb(BOARD_ID + i);
322 sum += sig[i];
323 }
324
325 sum += hp100_inb(BOARD_ID + i);
326 if (sum != 0xff)
327 return NULL; /* bad checksum */
328
329 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
330 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
331 str[2] = (sig[1] & 0x1f) + ('A' - 1);
332 rev = (sig[2] << 8) | sig[3];
333 sprintf(str + 3, "%04X", rev);
334
335 return str;
336}
337
7525d4bf 338#ifdef CONFIG_ISA
1da177e4
LT		 339static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
340{
341 const char *sig;
342 int i;
343
344 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
345 goto err;
346
347 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
348 release_region(ioaddr, HP100_REGION_SIZE);
349 goto err;
350 }
351
352 sig = hp100_read_id(ioaddr);
353 release_region(ioaddr, HP100_REGION_SIZE);
354
355 if (sig == NULL)
356 goto err;
357
358 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
6aa20a22 359 if (!strcmp(hp100_isa_tbl[i], sig))
1da177e4
LT		 360 break;
361
362 }
363
364 if (i < ARRAY_SIZE(hp100_isa_tbl))
365 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
366 err:
367 return -ENODEV;
368
369}
370/*
371 * Probe for ISA board.
372 * EISA and PCI are handled by device infrastructure.
373 */
374
375static int __init hp100_isa_probe(struct net_device *dev, int addr)
376{
377 int err = -ENODEV;
378
6aa20a22 379 /* Probe for a specific ISA address */
1da177e4
LT		 380 if (addr > 0xff && addr < 0x400)
381 err = hp100_isa_probe1(dev, addr);
382
6aa20a22 383 else if (addr != 0)
1da177e4
LT		 384 err = -ENXIO;
385
386 else {
387 /* Probe all ISA possible port regions */
388 for (addr = 0x100; addr < 0x400; addr += 0x20) {
389 err = hp100_isa_probe1(dev, addr);
390 if (!err)
391 break;
392 }
393 }
394 return err;
395}
7525d4bf 396#endif /* CONFIG_ISA */
1da177e4 397
7525d4bf 398#if !defined(MODULE) && defined(CONFIG_ISA)
1da177e4
LT		 399struct net_device * __init hp100_probe(int unit)
400{
401 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
402 int err;
403
404 if (!dev)
405 return ERR_PTR(-ENODEV);
406
1da177e4
LT		 407#ifdef HP100_DEBUG_B
408 hp100_outw(0x4200, TRACE);
409 printk("hp100: %s: probe\n", dev->name);
410#endif
411
412 if (unit >= 0) {
413 sprintf(dev->name, "eth%d", unit);
414 netdev_boot_setup_check(dev);
415 }
416
417 err = hp100_isa_probe(dev, dev->base_addr);
418 if (err)
419 goto out;
420
1da177e4 421 return dev;
1da177e4
LT		 422 out:
423 free_netdev(dev);
424 return ERR_PTR(err);
425}
7525d4bf 426#endif /* !MODULE && CONFIG_ISA */
1da177e4
LT		 427
428static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
429 u_char bus, struct pci_dev *pci_dev)
430{
431 int i;
432 int err = -ENODEV;
433 const char *eid;
434 u_int chip;
435 u_char uc;
436 u_int memory_size = 0, virt_memory_size = 0;
437 u_short local_mode, lsw;
438 short mem_mapped;
439 unsigned long mem_ptr_phys;
440 void __iomem *mem_ptr_virt;
441 struct hp100_private *lp;
442
443#ifdef HP100_DEBUG_B
444 hp100_outw(0x4201, TRACE);
445 printk("hp100: %s: probe1\n", dev->name);
446#endif
447
448 /* memory region for programmed i/o */
449 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
450 goto out1;
451
6aa20a22 452 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
1da177e4
LT		 453 goto out2;
454
455 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
456#ifdef HP100_DEBUG
457 if (chip == HP100_CHIPID_SHASTA)
458 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
459 else if (chip == HP100_CHIPID_RAINIER)
460 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
461 else if (chip == HP100_CHIPID_LASSEN)
462 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
463 else
464 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
465#endif
466
467 dev->base_addr = ioaddr;
468
469 eid = hp100_read_id(ioaddr);
470 if (eid == NULL) { /* bad checksum? */
471 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
472 goto out2;
473 }
474
475 hp100_page(ID_MAC_ADDR);
476 for (i = uc = 0; i < 7; i++)
477 uc += hp100_inb(LAN_ADDR + i);
478 if (uc != 0xff) {
479 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
480 err = -EIO;
481 goto out2;
482 }
483
484 /* Make sure, that all registers are correctly updated... */
485
486 hp100_load_eeprom(dev, ioaddr);
487 wait();
488
489 /*
490 * Determine driver operation mode
491 *
492 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
493 * force driver modes:
494 * hp100_mode=1 -> default, use busmaster mode if configured.
6aa20a22 495 * hp100_mode=2 -> enable shared memory mode
1da177e4
LT		 496 * hp100_mode=3 -> force use of i/o mapped mode.
497 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
498 */
499
500 /*
501 * LSW values:
502 * 0x2278 -> J2585B, PnP shared memory mode
503 * 0x2270 -> J2585B, shared memory mode, 0xdc000
504 * 0xa23c -> J2585B, I/O mapped mode
505 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
506 * 0x2220 -> EISA HP, I/O (Shasta Chip)
507 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
508 */
509
510#if 0
511 local_mode = 0x2270;
512 hp100_outw(0xfefe, OPTION_LSW);
513 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
514#endif
515
516 /* hp100_mode value maybe used in future by another card */
517 local_mode = hp100_mode;
518 if (local_mode < 1 || local_mode > 4)
519 local_mode = 1; /* default */
520#ifdef HP100_DEBUG
521 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
522 hp100_inw(OPTION_LSW));
523#endif
524
525 if (local_mode == 3) {
526 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
527 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
528 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
529 printk("hp100: IO mapped mode forced.\n");
530 } else if (local_mode == 2) {
531 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
532 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
533 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
534 printk("hp100: Shared memory mode requested.\n");
535 } else if (local_mode == 4) {
536 if (chip == HP100_CHIPID_LASSEN) {
537 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
538 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
539 printk("hp100: Busmaster mode requested.\n");
540 }
541 local_mode = 1;
542 }
543
544 if (local_mode == 1) { /* default behaviour */
545 lsw = hp100_inw(OPTION_LSW);
546
547 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
548 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
549#ifdef HP100_DEBUG
550 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
551#endif
552 local_mode = 3;
553 } else if (chip == HP100_CHIPID_LASSEN &&
554 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
555 /* Conversion to new PCI API :
556 * I don't have the doc, but I assume that the card
557 * can map the full 32bit address space.
558 * Also, we can have EISA Busmaster cards (not tested),
559 * so beware !!! - Jean II */
560 if((bus == HP100_BUS_PCI) &&
1e7f0bd8 561 (pci_set_dma_mask(pci_dev, DMA_32BIT_MASK))) {
1da177e4
LT		 562 /* Gracefully fallback to shared memory */
563 goto busmasterfail;
564 }
565 printk("hp100: Busmaster mode enabled.\n");
566 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
567 } else {
568 busmasterfail:
569#ifdef HP100_DEBUG
570 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
571 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
572#endif
573 /* In this case, try shared memory mode */
574 local_mode = 2;
575 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
576 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
577 }
578 }
579#ifdef HP100_DEBUG
580 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
581#endif
582
583 /* Check for shared memory on the card, eventually remap it */
584 hp100_page(HW_MAP);
585 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
586 mem_ptr_phys = 0UL;
587 mem_ptr_virt = NULL;
588 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
589 virt_memory_size = 0;
590
591 /* For memory mapped or busmaster mode, we want the memory address */
592 if (mem_mapped || (local_mode == 1)) {
593 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
594 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
595
596 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
597 printk("hp100: Can only use programmed i/o mode.\n");
598 mem_ptr_phys = 0;
599 mem_mapped = 0;
600 local_mode = 3; /* Use programmed i/o */
601 }
602
603 /* We do not need access to shared memory in busmaster mode */
604 /* However in slave mode we need to remap high (>1GB) card memory */
605 if (local_mode != 1) { /* = not busmaster */
606 /* We try with smaller memory sizes, if ioremap fails */
607 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
608 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
609#ifdef HP100_DEBUG
610 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
611#endif
612 } else {
613#ifdef HP100_DEBUG
614 printk("hp100: %s: remapped 0x%x bytes high PCI memory at 0x%lx to %p.\n", dev->name, virt_memory_size, mem_ptr_phys, mem_ptr_virt);
615#endif
616 break;
617 }
618 }
619
620 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
621 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
622 local_mode = 3;
623 virt_memory_size = 0;
624 }
625 }
626 }
627
628 if (local_mode == 3) { /* io mapped forced */
629 mem_mapped = 0;
630 mem_ptr_phys = 0;
631 mem_ptr_virt = NULL;
632 printk("hp100: Using (slow) programmed i/o mode.\n");
633 }
634
635 /* Initialise the "private" data structure for this card. */
636 lp = netdev_priv(dev);
637
638 spin_lock_init(&lp->lock);
639 strlcpy(lp->id, eid, HP100_SIG_LEN);
640 lp->chip = chip;
641 lp->mode = local_mode;
642 lp->bus = bus;
643 lp->pci_dev = pci_dev;
644 lp->priority_tx = hp100_priority_tx;
645 lp->rx_ratio = hp100_rx_ratio;
646 lp->mem_ptr_phys = mem_ptr_phys;
647 lp->mem_ptr_virt = mem_ptr_virt;
648 hp100_page(ID_MAC_ADDR);
649 lp->soft_model = hp100_inb(SOFT_MODEL);
650 lp->mac1_mode = HP100_MAC1MODE3;
651 lp->mac2_mode = HP100_MAC2MODE3;
652 memset(&lp->hash_bytes, 0x00, 8);
653
654 dev->base_addr = ioaddr;
655
656 lp->memory_size = memory_size;
657 lp->virt_memory_size = virt_memory_size;
658 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
659
660 dev->open = hp100_open;
661 dev->stop = hp100_close;
662
663 if (lp->mode == 1) /* busmaster */
664 dev->hard_start_xmit = hp100_start_xmit_bm;
665 else
666 dev->hard_start_xmit = hp100_start_xmit;
667
668 dev->get_stats = hp100_get_stats;
669 dev->set_multicast_list = &hp100_set_multicast_list;
670
671 /* Ask the card for which IRQ line it is configured */
672 if (bus == HP100_BUS_PCI) {
673 dev->irq = pci_dev->irq;
674 } else {
675 hp100_page(HW_MAP);
676 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
677 if (dev->irq == 2)
678 dev->irq = 9;
679 }
680
681 if (lp->mode == 1) /* busmaster */
682 dev->dma = 4;
683
684 /* Ask the card for its MAC address and store it for later use. */
685 hp100_page(ID_MAC_ADDR);
686 for (i = uc = 0; i < 6; i++)
687 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
688
689 /* Reset statistics (counters) */
690 hp100_clear_stats(lp, ioaddr);
691
692 /* If busmaster mode is wanted, a dma-capable memory area is needed for
6aa20a22 693 * the rx and tx PDLs
1da177e4 694 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
6aa20a22 695 * needed for the allocation of the memory area.
1da177e4
LT		 696 */
697
698 /* TODO: We do not need this with old cards, where PDLs are stored
699 * in the cards shared memory area. But currently, busmaster has been
700 * implemented/tested only with the lassen chip anyway... */
701 if (lp->mode == 1) { /* busmaster */
702 dma_addr_t page_baddr;
703 /* Get physically continous memory for TX & RX PDLs */
704 /* Conversion to new PCI API :
705 * Pages are always aligned and zeroed, no need to it ourself.
706 * Doc says should be OK for EISA bus as well - Jean II */
707 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
708 err = -ENOMEM;
709 goto out2;
710 }
711 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
712
713#ifdef HP100_DEBUG_BM
714 printk("hp100: %s: Reserved DMA memory from 0x%x to 0x%x\n", dev->name, (u_int) lp->page_vaddr_algn, (u_int) lp->page_vaddr_algn + MAX_RINGSIZE);
715#endif
716 lp->rxrcommit = lp->txrcommit = 0;
717 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
718 lp->txrhead = lp->txrtail = &(lp->txring[0]);
719 }
720
721 /* Initialise the card. */
6aa20a22 722 /* (I'm not really sure if it's a good idea to do this during probing, but
1da177e4
LT		 723 * like this it's assured that the lan connection type can be sensed
724 * correctly)
725 */
726 hp100_hwinit(dev);
727
728 /* Try to find out which kind of LAN the card is connected to. */
729 lp->lan_type = hp100_sense_lan(dev);
730
731 /* Print out a message what about what we think we have probed. */
732 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
733 switch (bus) {
734 case HP100_BUS_EISA:
735 printk("EISA");
736 break;
737 case HP100_BUS_PCI:
738 printk("PCI");
739 break;
740 default:
741 printk("ISA");
742 break;
743 }
744 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
745
746 if (lp->mode == 2) { /* memory mapped */
747 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
748 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
749 if (mem_ptr_virt)
750 printk(" (virtual base %p)", mem_ptr_virt);
751 printk(".\n");
752
753 /* Set for info when doing ifconfig */
754 dev->mem_start = mem_ptr_phys;
755 dev->mem_end = mem_ptr_phys + lp->memory_size;
756 }
757
758 printk("hp100: ");
759 if (lp->lan_type != HP100_LAN_ERR)
760 printk("Adapter is attached to ");
761 switch (lp->lan_type) {
762 case HP100_LAN_100:
763 printk("100Mb/s Voice Grade AnyLAN network.\n");
764 break;
765 case HP100_LAN_10:
766 printk("10Mb/s network (10baseT).\n");
767 break;
768 case HP100_LAN_COAX:
769 printk("10Mb/s network (coax).\n");
770 break;
771 default:
772 printk("Warning! Link down.\n");
773 }
774
b1fc5505 775 err = register_netdev(dev);
776 if (err)
777 goto out3;
778
1da177e4 779 return 0;
b1fc5505 780out3:
781 if (local_mode == 1)
6aa20a22
JG		 782 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
783 lp->page_vaddr_algn,
b1fc5505 784 virt_to_whatever(dev, lp->page_vaddr_algn));
785 if (mem_ptr_virt)
786 iounmap(mem_ptr_virt);
1da177e4
LT		 787out2:
788 release_region(ioaddr, HP100_REGION_SIZE);
789out1:
b1fc5505 790 return err;
1da177e4
LT		 791}
792
793/* This procedure puts the card into a stable init state */
794static void hp100_hwinit(struct net_device *dev)
795{
796 int ioaddr = dev->base_addr;
797 struct hp100_private *lp = netdev_priv(dev);
798
799#ifdef HP100_DEBUG_B
800 hp100_outw(0x4202, TRACE);
801 printk("hp100: %s: hwinit\n", dev->name);
802#endif
803
804 /* Initialise the card. -------------------------------------------- */
805
806 /* Clear all pending Ints and disable Ints */
807 hp100_page(PERFORMANCE);
808 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
809 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
810
811 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
812 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
813
814 if (lp->mode == 1) {
815 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
816 wait();
817 } else {
818 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
819 hp100_cascade_reset(dev, 1);
820 hp100_page(MAC_CTRL);
821 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
822 }
823
824 /* Initiate EEPROM reload */
825 hp100_load_eeprom(dev, 0);
826
827 wait();
828
829 /* Go into reset again. */
830 hp100_cascade_reset(dev, 1);
831
832 /* Set Option Registers to a safe state */
833 hp100_outw(HP100_DEBUG_EN |
834 HP100_RX_HDR |
835 HP100_EE_EN |
836 HP100_BM_WRITE |
837 HP100_BM_READ | HP100_RESET_HB |
838 HP100_FAKE_INT |
839 HP100_INT_EN |
840 HP100_MEM_EN |
841 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
842
843 hp100_outw(HP100_TRI_INT |
844 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
845
846 hp100_outb(HP100_PRIORITY_TX |
847 HP100_ADV_NXT_PKT |
848 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
849
850 /* TODO: Configure MMU for Ram Test. */
851 /* TODO: Ram Test. */
852
853 /* Re-check if adapter is still at same i/o location */
854 /* (If the base i/o in eeprom has been changed but the */
855 /* registers had not been changed, a reload of the eeprom */
856 /* would move the adapter to the address stored in eeprom */
857
858 /* TODO: Code to implement. */
859
860 /* Until here it was code from HWdiscover procedure. */
861 /* Next comes code from mmuinit procedure of SCO BM driver which is
862 * called from HWconfigure in the SCO driver. */
863
6aa20a22 864 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
1da177e4
LT		 865 * multicast filter...
866 */
867 hp100_mmuinit(dev);
868
869 /* We don't turn the interrupts on here - this is done by start_interface. */
870 wait(); /* TODO: Do we really need this? */
871
872 /* Enable Hardware (e.g. unreset) */
873 hp100_cascade_reset(dev, 0);
874
875 /* ------- initialisation complete ----------- */
876
877 /* Finally try to log in the Hub if there may be a VG connection. */
878 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
879 hp100_login_to_vg_hub(dev, 0); /* relogin */
880
881}
1da177e4 882
6aa20a22
JG		 883
884/*
1da177e4 885 * mmuinit - Reinitialise Cascade MMU and MAC settings.
6aa20a22 886 * Note: Must already be in reset and leaves card in reset.
1da177e4
LT		 887 */
888static void hp100_mmuinit(struct net_device *dev)
889{
890 int ioaddr = dev->base_addr;
891 struct hp100_private *lp = netdev_priv(dev);
892 int i;
893
894#ifdef HP100_DEBUG_B
895 hp100_outw(0x4203, TRACE);
896 printk("hp100: %s: mmuinit\n", dev->name);
897#endif
898
899#ifdef HP100_DEBUG
900 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
901 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
902 return;
903 }
904#endif
905
906 /* Make sure IRQs are masked off and ack'ed. */
907 hp100_page(PERFORMANCE);
908 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
909 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
910
911 /*
6aa20a22 912 * Enable Hardware
1da177e4
LT		 913 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
914 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
915 * - Clear Priority, Advance Pkt and Xmit Cmd
916 */
917
918 hp100_outw(HP100_DEBUG_EN |
919 HP100_RX_HDR |
920 HP100_EE_EN | HP100_RESET_HB |
921 HP100_IO_EN |
922 HP100_FAKE_INT |
923 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
924
925 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
926
927 if (lp->mode == 1) { /* busmaster */
928 hp100_outw(HP100_BM_WRITE |
929 HP100_BM_READ |
930 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
931 } else if (lp->mode == 2) { /* memory mapped */
932 hp100_outw(HP100_BM_WRITE |
933 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
934 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
935 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
936 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
937 } else if (lp->mode == 3) { /* i/o mapped mode */
938 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
939 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
940 }
941
942 hp100_page(HW_MAP);
943 hp100_outb(0, EARLYRXCFG);
944 hp100_outw(0, EARLYTXCFG);
945
946 /*
947 * Enable Bus Master mode
948 */
949 if (lp->mode == 1) { /* busmaster */
950 /* Experimental: Set some PCI configuration bits */
951 hp100_page(HW_MAP);
952 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
953 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
954
955 /* PCI Bus failures should result in a Misc. Interrupt */
956 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
957
958 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
959 hp100_page(HW_MAP);
960 /* Use Burst Mode and switch on PAGE_CK */
961 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
962 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
963 hp100_orb(HP100_BM_PAGE_CK, BM);
964 hp100_orb(HP100_BM_MASTER, BM);
965 } else { /* not busmaster */
966
967 hp100_page(HW_MAP);
968 hp100_andb(~HP100_BM_MASTER, BM);
969 }
970
971 /*
972 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
973 */
974 hp100_page(MMU_CFG);
975 if (lp->mode == 1) { /* only needed for Busmaster */
976 int xmit_stop, recv_stop;
977
978 if ((lp->chip == HP100_CHIPID_RAINIER)
979 || (lp->chip == HP100_CHIPID_SHASTA)) {
980 int pdl_stop;
981
982 /*
983 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
984 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
985 * to the next higher 1k boundary) bytes for the rx-pdl's
986 * Note: For non-etr chips the transmit stop register must be
6aa20a22 987 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
1da177e4
LT		 988 */
989 pdl_stop = lp->memory_size;
990 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
991 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
992 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
993#ifdef HP100_DEBUG_BM
994 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
995#endif
996 } else {
997 /* ETR chip (Lassen) in busmaster mode */
998 xmit_stop = (lp->memory_size) - 1;
999 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1000 }
1001
1002 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1003 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1004#ifdef HP100_DEBUG_BM
1005 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1006 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1007#endif
1008 } else {
1009 /* Slave modes (memory mapped and programmed io) */
1010 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1011 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1012#ifdef HP100_DEBUG
1013 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1014 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1015#endif
1016 }
1017
1018 /* Write MAC address into page 1 */
1019 hp100_page(MAC_ADDRESS);
1020 for (i = 0; i < 6; i++)
1021 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1022
1023 /* Zero the multicast hash registers */
1024 for (i = 0; i < 8; i++)
1025 hp100_outb(0x0, HASH_BYTE0 + i);
1026
1027 /* Set up MAC defaults */
1028 hp100_page(MAC_CTRL);
1029
1030 /* Go to LAN Page and zero all filter bits */
1031 /* Zero accept error, accept multicast, accept broadcast and accept */
1032 /* all directed packet bits */
1033 hp100_andb(~(HP100_RX_EN |
1034 HP100_TX_EN |
1035 HP100_ACC_ERRORED |
1036 HP100_ACC_MC |
1037 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1038
1039 hp100_outb(0x00, MAC_CFG_2);
1040
1041 /* Zero the frame format bit. This works around a training bug in the */
1042 /* new hubs. */
1043 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1044
1045 if (lp->priority_tx)
1046 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1047 else
1048 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1049
1050 hp100_outb(HP100_ADV_NXT_PKT |
1051 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1052
1053 /* If busmaster, initialize the PDLs */
1054 if (lp->mode == 1)
1055 hp100_init_pdls(dev);
1056
1057 /* Go to performance page and initalize isr and imr registers */
1058 hp100_page(PERFORMANCE);
1059 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1060 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1061}
1062
1063/*
1064 * open/close functions
1065 */
1066
1067static int hp100_open(struct net_device *dev)
1068{
1069 struct hp100_private *lp = netdev_priv(dev);
1070#ifdef HP100_DEBUG_B
1071 int ioaddr = dev->base_addr;
1072#endif
1073
1074#ifdef HP100_DEBUG_B
1075 hp100_outw(0x4204, TRACE);
1076 printk("hp100: %s: open\n", dev->name);
1077#endif
1078
1079 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1080 if (request_irq(dev->irq, hp100_interrupt,
1081 lp->bus == HP100_BUS_PCI || lp->bus ==
1fb9df5d 1082 HP100_BUS_EISA ? IRQF_SHARED : IRQF_DISABLED,
1da177e4
LT		 1083 "hp100", dev)) {
1084 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1085 return -EAGAIN;
1086 }
1087
1088 dev->trans_start = jiffies;
1089 netif_start_queue(dev);
1090
1091 lp->lan_type = hp100_sense_lan(dev);
1092 lp->mac1_mode = HP100_MAC1MODE3;
1093 lp->mac2_mode = HP100_MAC2MODE3;
1094 memset(&lp->hash_bytes, 0x00, 8);
1095
1096 hp100_stop_interface(dev);
1097
1098 hp100_hwinit(dev);
1099
1100 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1101
1102 return 0;
1103}
1104
1105/* The close function is called when the interface is to be brought down */
1106static int hp100_close(struct net_device *dev)
1107{
1108 int ioaddr = dev->base_addr;
1109 struct hp100_private *lp = netdev_priv(dev);
1110
1111#ifdef HP100_DEBUG_B
1112 hp100_outw(0x4205, TRACE);
1113 printk("hp100: %s: close\n", dev->name);
1114#endif
1115
1116 hp100_page(PERFORMANCE);
1117 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1118
1119 hp100_stop_interface(dev);
1120
1121 if (lp->lan_type == HP100_LAN_100)
1122 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1123
1124 netif_stop_queue(dev);
1125
1126 free_irq(dev->irq, dev);
1127
1128#ifdef HP100_DEBUG
1129 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1130 hp100_inw(OPTION_LSW));
1131#endif
1132
1133 return 0;
1134}
6aa20a22 1135
1da177e4
LT		 1136
1137/*
6aa20a22 1138 * Configure the PDL Rx rings and LAN
1da177e4
LT		 1139 */
1140static void hp100_init_pdls(struct net_device *dev)
1141{
1142 struct hp100_private *lp = netdev_priv(dev);
1143 hp100_ring_t *ringptr;
1144 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1145 int i;
1146
1147#ifdef HP100_DEBUG_B
1148 int ioaddr = dev->base_addr;
1149#endif
1150
1151#ifdef HP100_DEBUG_B
1152 hp100_outw(0x4206, TRACE);
1153 printk("hp100: %s: init pdls\n", dev->name);
1154#endif
1155
79ea13ce 1156 if (!lp->page_vaddr_algn)
1da177e4
LT		 1157 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1158 else {
1159 /* pageptr shall point into the DMA accessible memory region */
1160 /* we use this pointer to status the upper limit of allocated */
1161 /* memory in the allocated page. */
1162 /* note: align the pointers to the pci cache line size */
1163 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1164 pageptr = lp->page_vaddr_algn;
1165
1166 lp->rxrcommit = 0;
1167 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1168
1169 /* Initialise Rx Ring */
1170 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1171 lp->rxring[i].next = ringptr;
1172 ringptr = &(lp->rxring[i]);
1173 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1174 }
1175
1176 /* Initialise Tx Ring */
1177 lp->txrcommit = 0;
1178 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1179 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1180 lp->txring[i].next = ringptr;
1181 ringptr = &(lp->txring[i]);
1182 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1183 }
1184 }
1185}
6aa20a22 1186
1da177e4
LT		 1187
1188/* These functions "format" the entries in the pdl structure */
1189/* They return how much memory the fragments need. */
1190static int hp100_init_rxpdl(struct net_device *dev,
1191 register hp100_ring_t * ringptr,
1192 register u32 * pdlptr)
1193{
1194 /* pdlptr is starting address for this pdl */
1195
1196 if (0 != (((unsigned long) pdlptr) & 0xf))
1197 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1198 dev->name, (unsigned long) pdlptr);
1199
1200 ringptr->pdl = pdlptr + 1;
1201 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1202 ringptr->skb = (void *) NULL;
1203
6aa20a22 1204 /*
1da177e4
LT		 1205 * Write address and length of first PDL Fragment (which is used for
1206 * storing the RX-Header
6aa20a22 1207 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1da177e4
LT		 1208 * store this information. (PDH is at offset 0x04)
1209 */
1210 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1211
1212 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1213 *(pdlptr + 3) = 4; /* Length Frag 1 */
1214
c40cf519 1215 return roundup(MAX_RX_FRAG * 2 + 2, 4);
1da177e4
LT		 1216}
1217
1218
1219static int hp100_init_txpdl(struct net_device *dev,
1220 register hp100_ring_t * ringptr,
1221 register u32 * pdlptr)
1222{
1223 if (0 != (((unsigned long) pdlptr) & 0xf))
1224 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1225
1226 ringptr->pdl = pdlptr; /* +1; */
1227 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1228 ringptr->skb = (void *) NULL;
1229
c40cf519 1230 return roundup(MAX_TX_FRAG * 2 + 2, 4);
1da177e4
LT		 1231}
1232
1233/*
6aa20a22 1234 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1da177e4 1235 * for possible odd word alignment rounding up to next dword and set PDL
6aa20a22 1236 * address for fragment#2
1da177e4
LT		 1237 * Returns: 0 if unable to allocate skb_buff
1238 * 1 if successful
1239 */
1240static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1241 struct net_device *dev)
1242{
1243#ifdef HP100_DEBUG_B
1244 int ioaddr = dev->base_addr;
1245#endif
1246#ifdef HP100_DEBUG_BM
1247 u_int *p;
1248#endif
1249
1250#ifdef HP100_DEBUG_B
1251 hp100_outw(0x4207, TRACE);
1252 printk("hp100: %s: build rx pdl\n", dev->name);
1253#endif
1254
1255 /* Allocate skb buffer of maximum size */
6aa20a22 1256 /* Note: This depends on the alloc_skb functions allocating more
1da177e4
LT		 1257 * space than requested, i.e. aligning to 16bytes */
1258
c40cf519 1259 ringptr->skb = dev_alloc_skb(roundup(MAX_ETHER_SIZE + 2, 4));
1da177e4
LT		 1260
1261 if (NULL != ringptr->skb) {
6aa20a22 1262 /*
1da177e4
LT		 1263 * Reserve 2 bytes at the head of the buffer to land the IP header
1264 * on a long word boundary (According to the Network Driver section
1265 * in the Linux KHG, this should help to increase performance.)
1266 */
1267 skb_reserve(ringptr->skb, 2);
1268
1269 ringptr->skb->dev = dev;
1270 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1271
1272 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1273 /* Note: 1st Fragment is used for the 4 byte packet status
6aa20a22 1274 * (receive header). Its PDL entries are set up by init_rxpdl. So
1da177e4 1275 * here we only have to set up the PDL fragment entries for the data
6aa20a22
JG		 1276 * part. Those 4 bytes will be stored in the DMA memory region
1277 * directly before the PDL.
1da177e4
LT		 1278 */
1279#ifdef HP100_DEBUG_BM
1280 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1281 dev->name, (u_int) ringptr->pdl,
c40cf519 1282 roundup(MAX_ETHER_SIZE + 2, 4),
1da177e4
LT		 1283 (unsigned int) ringptr->skb->data);
1284#endif
1285
1286 /* Conversion to new PCI API : map skbuf data to PCI bus.
1287 * Doc says it's OK for EISA as well - Jean II */
1288 ringptr->pdl[0] = 0x00020000; /* Write PDH */
6aa20a22 1289 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1da177e4
LT		 1290 ringptr->skb->data);
1291 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1292
1293#ifdef HP100_DEBUG_BM
1294 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1295 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1296#endif
1297 return (1);
1298 }
1299 /* else: */
1300 /* alloc_skb failed (no memory) -> still can receive the header
1301 * fragment into PDL memory. make PDL safe by clearing msgptr and
1302 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1303 */
1304#ifdef HP100_DEBUG_BM
1305 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1306#endif
1307
1308 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1309
1310 return (0);
1311}
1312
1313/*
1314 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1315 *
1316 * Makes assumption that skb's are always contiguous memory areas and
1317 * therefore PDLs contain only 2 physical fragments.
1318 * - While the number of Rx PDLs with buffers is less than maximum
1319 * a. Get a maximum packet size skb
1320 * b. Put the physical address of the buffer into the PDL.
1321 * c. Output physical address of PDL to adapter.
1322 */
1323static void hp100_rxfill(struct net_device *dev)
1324{
1325 int ioaddr = dev->base_addr;
1326
1327 struct hp100_private *lp = netdev_priv(dev);
1328 hp100_ring_t *ringptr;
1329
1330#ifdef HP100_DEBUG_B
1331 hp100_outw(0x4208, TRACE);
1332 printk("hp100: %s: rxfill\n", dev->name);
1333#endif
1334
1335 hp100_page(PERFORMANCE);
1336
1337 while (lp->rxrcommit < MAX_RX_PDL) {
1338 /*
1339 ** Attempt to get a buffer and build a Rx PDL.
1340 */
1341 ringptr = lp->rxrtail;
1342 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1343 return; /* None available, return */
1344 }
1345
1346 /* Hand this PDL over to the card */
1347 /* Note: This needs performance page selected! */
1348#ifdef HP100_DEBUG_BM
1349 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1350 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1351 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1352#endif
1353
1354 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1355
1356 lp->rxrcommit += 1;
1357 lp->rxrtail = ringptr->next;
1358 }
1359}
1360
1361/*
1362 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1363 */
1364
1365static void hp100_BM_shutdown(struct net_device *dev)
1366{
1367 int ioaddr = dev->base_addr;
1368 struct hp100_private *lp = netdev_priv(dev);
1369 unsigned long time;
1370
1371#ifdef HP100_DEBUG_B
1372 hp100_outw(0x4209, TRACE);
1373 printk("hp100: %s: bm shutdown\n", dev->name);
1374#endif
1375
1376 hp100_page(PERFORMANCE);
1377 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1378 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1379
1380 /* Ensure Interrupts are off */
1381 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1382
1383 /* Disable all MAC activity */
1384 hp100_page(MAC_CTRL);
1385 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1386
1387 /* If cascade MMU is not already in reset */
1388 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1389 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1390 * MMU pointers will not be reset out from underneath
1391 */
1392 hp100_page(MAC_CTRL);
1393 for (time = 0; time < 5000; time++) {
1394 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1395 break;
1396 }
1397
1398 /* Shutdown algorithm depends on the generation of Cascade */
1399 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1400 /* Disable Busmaster mode and wait for bit to go to zero. */
1401 hp100_page(HW_MAP);
1402 hp100_andb(~HP100_BM_MASTER, BM);
1403 /* 100 ms timeout */
1404 for (time = 0; time < 32000; time++) {
1405 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1406 break;
1407 }
1408 } else { /* Shasta or Rainier Shutdown/Reset */
1409 /* To ensure all bus master inloading activity has ceased,
6aa20a22 1410 * wait for no Rx PDAs or no Rx packets on card.
1da177e4
LT		 1411 */
1412 hp100_page(PERFORMANCE);
1413 /* 100 ms timeout */
1414 for (time = 0; time < 10000; time++) {
1415 /* RX_PDL: PDLs not executed. */
1416 /* RX_PKT_CNT: RX'd packets on card. */
1417 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1418 break;
1419 }
1420
1421 if (time >= 10000)
1422 printk("hp100: %s: BM shutdown error.\n", dev->name);
1423
1424 /* To ensure all bus master outloading activity has ceased,
1425 * wait until the Tx PDA count goes to zero or no more Tx space
6aa20a22 1426 * available in the Tx region of the card.
1da177e4
LT		 1427 */
1428 /* 100 ms timeout */
1429 for (time = 0; time < 10000; time++) {
1430 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1431 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1432 break;
1433 }
1434
1435 /* Disable Busmaster mode */
1436 hp100_page(HW_MAP);
1437 hp100_andb(~HP100_BM_MASTER, BM);
1438 } /* end of shutdown procedure for non-etr parts */
1439
1440 hp100_cascade_reset(dev, 1);
1441 }
1442 hp100_page(PERFORMANCE);
1443 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1444 /* Busmaster mode should be shut down now. */
1445}
1446
1447static int hp100_check_lan(struct net_device *dev)
1448{
1449 struct hp100_private *lp = netdev_priv(dev);
1450
1451 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1452 hp100_stop_interface(dev);
1453 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1454 printk("hp100: %s: no connection found - check wire\n", dev->name);
1455 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1456 return -EIO;
1457 }
1458 if (lp->lan_type == HP100_LAN_100)
1459 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1460 hp100_start_interface(dev);
1461 }
1462 return 0;
1463}
1464
6aa20a22 1465/*
1da177e4
LT		 1466 * transmit functions
1467 */
1468
1469/* tx function for busmaster mode */
1470static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1471{
1472 unsigned long flags;
1473 int i, ok_flag;
1474 int ioaddr = dev->base_addr;
1475 struct hp100_private *lp = netdev_priv(dev);
1476 hp100_ring_t *ringptr;
1477
1478#ifdef HP100_DEBUG_B
1479 hp100_outw(0x4210, TRACE);
1480 printk("hp100: %s: start_xmit_bm\n", dev->name);
1481#endif
1482
1483 if (skb == NULL) {
1484 return 0;
1485 }
1486
1487 if (skb->len <= 0)
1488 return 0;
6aa20a22 1489
5b057c6b
HX		 1490 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1491 return 0;
1da177e4
LT		 1492
1493 /* Get Tx ring tail pointer */
1494 if (lp->txrtail->next == lp->txrhead) {
1495 /* No memory. */
1496#ifdef HP100_DEBUG
1497 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1498#endif
1499 /* not waited long enough since last tx? */
ff5688ae 1500 if (time_before(jiffies, dev->trans_start + HZ))
1da177e4
LT		 1501 return -EAGAIN;
1502
1503 if (hp100_check_lan(dev))
1504 return -EIO;
1505
1506 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1507 /* we have a 100Mb/s adapter but it isn't connected to hub */
1508 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1509 hp100_stop_interface(dev);
1510 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1511 hp100_start_interface(dev);
1512 } else {
1513 spin_lock_irqsave(&lp->lock, flags);
1514 hp100_ints_off(); /* Useful ? Jean II */
1515 i = hp100_sense_lan(dev);
1516 hp100_ints_on();
1517 spin_unlock_irqrestore(&lp->lock, flags);
1518 if (i == HP100_LAN_ERR)
1519 printk("hp100: %s: link down detected\n", dev->name);
1520 else if (lp->lan_type != i) { /* cable change! */
1521 /* it's very hard - all network settings must be changed!!! */
1522 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1523 lp->lan_type = i;
1524 hp100_stop_interface(dev);
1525 if (lp->lan_type == HP100_LAN_100)
1526 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1527 hp100_start_interface(dev);
1528 } else {
1529 printk("hp100: %s: interface reset\n", dev->name);
1530 hp100_stop_interface(dev);
1531 if (lp->lan_type == HP100_LAN_100)
1532 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1533 hp100_start_interface(dev);
1534 }
1535 }
1536
1537 dev->trans_start = jiffies;
1538 return -EAGAIN;
1539 }
1540
1541 /*
1542 * we have to turn int's off before modifying this, otherwise
1543 * a tx_pdl_cleanup could occur at the same time
1544 */
1545 spin_lock_irqsave(&lp->lock, flags);
1546 ringptr = lp->txrtail;
1547 lp->txrtail = ringptr->next;
1548
1549 /* Check whether packet has minimal packet size */
1550 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1551 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1552
1553 ringptr->skb = skb;
1554 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1555 if (lp->chip == HP100_CHIPID_SHASTA) {
1556 /* TODO:Could someone who has the EISA card please check if this works? */
1557 ringptr->pdl[2] = i;
1558 } else { /* Lassen */
1559 /* In the PDL, don't use the padded size but the real packet size: */
1560 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1561 }
1562 /* Conversion to new PCI API : map skbuf data to PCI bus.
1563 * Doc says it's OK for EISA as well - Jean II */
1564 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1565
1566 /* Hand this PDL to the card. */
1567 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1568
1569 lp->txrcommit++;
1570 spin_unlock_irqrestore(&lp->lock, flags);
1571
1572 /* Update statistics */
1573 lp->stats.tx_packets++;
1574 lp->stats.tx_bytes += skb->len;
1575 dev->trans_start = jiffies;
1576
1577 return 0;
1578}
6aa20a22 1579
1da177e4
LT		 1580
1581/* clean_txring checks if packets have been sent by the card by reading
1582 * the TX_PDL register from the performance page and comparing it to the
1583 * number of commited packets. It then frees the skb's of the packets that
1584 * obviously have been sent to the network.
1585 *
6aa20a22 1586 * Needs the PERFORMANCE page selected.
1da177e4
LT		 1587 */
1588static void hp100_clean_txring(struct net_device *dev)
1589{
1590 struct hp100_private *lp = netdev_priv(dev);
1591 int ioaddr = dev->base_addr;
1592 int donecount;
1593
1594#ifdef HP100_DEBUG_B
1595 hp100_outw(0x4211, TRACE);
1596 printk("hp100: %s: clean txring\n", dev->name);
1597#endif
1598
1599 /* How many PDLs have been transmitted? */
1600 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1601
1602#ifdef HP100_DEBUG
1603 if (donecount > MAX_TX_PDL)
1604 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1605#endif
1606
1607 for (; 0 != donecount; donecount--) {
1608#ifdef HP100_DEBUG_BM
1609 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1610 dev->name, (u_int) lp->txrhead->skb->data,
1611 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1612#endif
1613 /* Conversion to new PCI API : NOP */
1614 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1615 dev_kfree_skb_any(lp->txrhead->skb);
1616 lp->txrhead->skb = (void *) NULL;
1617 lp->txrhead = lp->txrhead->next;
1618 lp->txrcommit--;
1619 }
1620}
1621
1622/* tx function for slave modes */
1623static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1624{
1625 unsigned long flags;
1626 int i, ok_flag;
1627 int ioaddr = dev->base_addr;
1628 u_short val;
1629 struct hp100_private *lp = netdev_priv(dev);
1630
1631#ifdef HP100_DEBUG_B
1632 hp100_outw(0x4212, TRACE);
1633 printk("hp100: %s: start_xmit\n", dev->name);
1634#endif
1635
1636 if (skb == NULL) {
1637 return 0;
1638 }
1639
1640 if (skb->len <= 0)
1641 return 0;
1642
1643 if (hp100_check_lan(dev))
1644 return -EIO;
1645
1646 /* If there is not enough free memory on the card... */
1647 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1648 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1649#ifdef HP100_DEBUG
1650 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1651#endif
1652 /* not waited long enough since last failed tx try? */
ff5688ae 1653 if (time_before(jiffies, dev->trans_start + HZ)) {
1da177e4
LT		 1654#ifdef HP100_DEBUG
1655 printk("hp100: %s: trans_start timing problem\n",
1656 dev->name);
1657#endif
1658 return -EAGAIN;
1659 }
1660 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1661 /* we have a 100Mb/s adapter but it isn't connected to hub */
1662 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1663 hp100_stop_interface(dev);
1664 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1665 hp100_start_interface(dev);
1666 } else {
1667 spin_lock_irqsave(&lp->lock, flags);
1668 hp100_ints_off(); /* Useful ? Jean II */
1669 i = hp100_sense_lan(dev);
1670 hp100_ints_on();
1671 spin_unlock_irqrestore(&lp->lock, flags);
1672 if (i == HP100_LAN_ERR)
1673 printk("hp100: %s: link down detected\n", dev->name);
1674 else if (lp->lan_type != i) { /* cable change! */
1675 /* it's very hard - all network setting must be changed!!! */
1676 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1677 lp->lan_type = i;
1678 hp100_stop_interface(dev);
1679 if (lp->lan_type == HP100_LAN_100)
1680 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1681 hp100_start_interface(dev);
1682 } else {
1683 printk("hp100: %s: interface reset\n", dev->name);
1684 hp100_stop_interface(dev);
1685 if (lp->lan_type == HP100_LAN_100)
1686 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1687 hp100_start_interface(dev);
1688 mdelay(1);
1689 }
1690 }
1691 dev->trans_start = jiffies;
1692 return -EAGAIN;
1693 }
1694
1695 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1696#ifdef HP100_DEBUG_TX
1697 printk("hp100: %s: start_xmit: busy\n", dev->name);
1698#endif
1699 }
1700
1701 spin_lock_irqsave(&lp->lock, flags);
1702 hp100_ints_off();
1703 val = hp100_inw(IRQ_STATUS);
1704 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1705 * when the current packet being transmitted on the wire is completed. */
1706 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1707#ifdef HP100_DEBUG_TX
1708 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1709 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1710#endif
1711
1712 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1713 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1714
1715 hp100_outw(i, DATA32); /* tell card the total packet length */
1716 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1717
1718 if (lp->mode == 2) { /* memory mapped */
450d86df
AV		 1719 /* Note: The J2585B needs alignment to 32bits here! */
1720 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1721 if (!ok_flag)
1722 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1da177e4
LT		 1723 } else { /* programmed i/o */
1724 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1725 (skb->len + 3) >> 2);
1726 if (!ok_flag)
1727 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1728 hp100_outl(0, DATA32);
1729 }
1730
1731 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1732
1733 lp->stats.tx_packets++;
1734 lp->stats.tx_bytes += skb->len;
1735 dev->trans_start = jiffies;
1736 hp100_ints_on();
1737 spin_unlock_irqrestore(&lp->lock, flags);
1738
1739 dev_kfree_skb_any(skb);
1740
1741#ifdef HP100_DEBUG_TX
1742 printk("hp100: %s: start_xmit: end\n", dev->name);
1743#endif
1744
1745 return 0;
1746}
6aa20a22 1747
1da177e4
LT		 1748
1749/*
1750 * Receive Function (Non-Busmaster mode)
6aa20a22 1751 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1da177e4
LT		 1752 * packet counter is non-zero.
1753 * For non-busmaster, this function does the whole work of transfering
1754 * the packet to the host memory and then up to higher layers via skb
6aa20a22 1755 * and netif_rx.
1da177e4
LT		 1756 */
1757
1758static void hp100_rx(struct net_device *dev)
1759{
1760 int packets, pkt_len;
1761 int ioaddr = dev->base_addr;
1762 struct hp100_private *lp = netdev_priv(dev);
1763 u_int header;
1764 struct sk_buff *skb;
1765
1766#ifdef DEBUG_B
1767 hp100_outw(0x4213, TRACE);
1768 printk("hp100: %s: rx\n", dev->name);
1769#endif
1770
1771 /* First get indication of received lan packet */
1772 /* RX_PKT_CND indicates the number of packets which have been fully */
1773 /* received onto the card but have not been fully transferred of the card */
1774 packets = hp100_inb(RX_PKT_CNT);
1775#ifdef HP100_DEBUG_RX
1776 if (packets > 1)
1777 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1778#endif
1779
1780 while (packets-- > 0) {
1781 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1782 /* really advanced to the next packet. */
1783 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1784#ifdef HP100_DEBUG_RX
1785 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1786#endif
1787 }
1788
1789 /* First we get the header, which contains information about the */
1790 /* actual length of the received packet. */
1791 if (lp->mode == 2) { /* memory mapped mode */
450d86df 1792 header = readl(lp->mem_ptr_virt);
1da177e4
LT		 1793 } else /* programmed i/o */
1794 header = hp100_inl(DATA32);
1795
1796 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1797
1798#ifdef HP100_DEBUG_RX
1799 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1800 dev->name, header & HP100_PKT_LEN_MASK,
1801 (header >> 16) & 0xfff8, (header >> 16) & 7);
1802#endif
1803
1804 /* Now we allocate the skb and transfer the data into it. */
1805 skb = dev_alloc_skb(pkt_len+2);
1806 if (skb == NULL) { /* Not enough memory->drop packet */
1807#ifdef HP100_DEBUG
1808 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1809 dev->name, pkt_len);
1810#endif
1811 lp->stats.rx_dropped++;
1812 } else { /* skb successfully allocated */
1813
1814 u_char *ptr;
1815
1816 skb_reserve(skb,2);
1da177e4
LT		 1817
1818 /* ptr to start of the sk_buff data area */
1819 skb_put(skb, pkt_len);
1820 ptr = skb->data;
1821
1822 /* Now transfer the data from the card into that area */
450d86df
AV		 1823 if (lp->mode == 2)
1824 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1825 else /* io mapped */
1da177e4
LT		 1826 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1827
1828 skb->protocol = eth_type_trans(skb, dev);
1829
1830#ifdef HP100_DEBUG_RX
1831 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1832 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1833 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1834 ptr[9], ptr[10], ptr[11]);
1835#endif
1836 netif_rx(skb);
1da177e4
LT		 1837 lp->stats.rx_packets++;
1838 lp->stats.rx_bytes += pkt_len;
1839 }
1840
1841 /* Indicate the card that we have got the packet */
1842 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1843
1844 switch (header & 0x00070000) {
1845 case (HP100_MULTI_ADDR_HASH << 16):
1846 case (HP100_MULTI_ADDR_NO_HASH << 16):
1847 lp->stats.multicast++;
1848 break;
1849 }
1850 } /* end of while(there are packets) loop */
1851#ifdef HP100_DEBUG_RX
1852 printk("hp100_rx: %s: end\n", dev->name);
1853#endif
1854}
1855
6aa20a22 1856/*
1da177e4
LT		 1857 * Receive Function for Busmaster Mode
1858 */
1859static void hp100_rx_bm(struct net_device *dev)
1860{
1861 int ioaddr = dev->base_addr;
1862 struct hp100_private *lp = netdev_priv(dev);
1863 hp100_ring_t *ptr;
1864 u_int header;
1865 int pkt_len;
1866
1867#ifdef HP100_DEBUG_B
1868 hp100_outw(0x4214, TRACE);
1869 printk("hp100: %s: rx_bm\n", dev->name);
1870#endif
1871
1872#ifdef HP100_DEBUG
1873 if (0 == lp->rxrcommit) {
1874 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1875 return;
1876 } else
6aa20a22 1877 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1da177e4
LT		 1878 * the cards BM engine */
1879 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1880 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1881 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1882 lp->rxrcommit);
1883 return;
1884 }
1885#endif
1886
1887 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1888 /*
1889 * The packet was received into the pdl pointed to by lp->rxrhead (
6aa20a22 1890 * the oldest pdl in the ring
1da177e4
LT		 1891 */
1892
1893 /* First we get the header, which contains information about the */
1894 /* actual length of the received packet. */
1895
1896 ptr = lp->rxrhead;
1897
1898 header = *(ptr->pdl - 1);
1899 pkt_len = (header & HP100_PKT_LEN_MASK);
1900
1901 /* Conversion to new PCI API : NOP */
1902 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1903
1904#ifdef HP100_DEBUG_BM
1905 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1906 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1907 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1908 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",
1909 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1910 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1911 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1912#endif
1913
1914 if ((pkt_len >= MIN_ETHER_SIZE) &&
1915 (pkt_len <= MAX_ETHER_SIZE)) {
1916 if (ptr->skb == NULL) {
1917 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1918 /* can happen if we only allocated room for the pdh due to memory shortage. */
1919 lp->stats.rx_dropped++;
1920 } else {
1921 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1922 ptr->skb->protocol =
1923 eth_type_trans(ptr->skb, dev);
1924
1925 netif_rx(ptr->skb); /* Up and away... */
1926
1da177e4
LT		 1927 lp->stats.rx_packets++;
1928 lp->stats.rx_bytes += pkt_len;
1929 }
1930
1931 switch (header & 0x00070000) {
1932 case (HP100_MULTI_ADDR_HASH << 16):
1933 case (HP100_MULTI_ADDR_NO_HASH << 16):
1934 lp->stats.multicast++;
1935 break;
1936 }
1937 } else {
1938#ifdef HP100_DEBUG
1939 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1940#endif
1941 if (ptr->skb != NULL)
1942 dev_kfree_skb_any(ptr->skb);
1943 lp->stats.rx_errors++;
1944 }
1945
1946 lp->rxrhead = lp->rxrhead->next;
1947
1948 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1949 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1950 /* No space for skb, header can still be received. */
1951#ifdef HP100_DEBUG
1952 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1953#endif
1954 return;
1955 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1956 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1957 lp->rxrtail = lp->rxrtail->next;
1958 }
1959
1960 }
1961}
1962
1963/*
1964 * statistics
1965 */
1966static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1967{
1968 unsigned long flags;
1969 int ioaddr = dev->base_addr;
1970 struct hp100_private *lp = netdev_priv(dev);
1971
1972#ifdef HP100_DEBUG_B
1973 hp100_outw(0x4215, TRACE);
1974#endif
1975
1976 spin_lock_irqsave(&lp->lock, flags);
1977 hp100_ints_off(); /* Useful ? Jean II */
1978 hp100_update_stats(dev);
1979 hp100_ints_on();
1980 spin_unlock_irqrestore(&lp->lock, flags);
1981 return &(lp->stats);
1982}
1983
1984static void hp100_update_stats(struct net_device *dev)
1985{
1986 int ioaddr = dev->base_addr;
1987 u_short val;
1988 struct hp100_private *lp = netdev_priv(dev);
1989
1990#ifdef HP100_DEBUG_B
1991 hp100_outw(0x4216, TRACE);
1992 printk("hp100: %s: update-stats\n", dev->name);
1993#endif
1994
1995 /* Note: Statistics counters clear when read. */
1996 hp100_page(MAC_CTRL);
1997 val = hp100_inw(DROPPED) & 0x0fff;
1998 lp->stats.rx_errors += val;
1999 lp->stats.rx_over_errors += val;
2000 val = hp100_inb(CRC);
2001 lp->stats.rx_errors += val;
2002 lp->stats.rx_crc_errors += val;
2003 val = hp100_inb(ABORT);
2004 lp->stats.tx_errors += val;
2005 lp->stats.tx_aborted_errors += val;
2006 hp100_page(PERFORMANCE);
2007}
2008
2009static void hp100_misc_interrupt(struct net_device *dev)
2010{
2011#ifdef HP100_DEBUG_B
2012 int ioaddr = dev->base_addr;
2013#endif
2014 struct hp100_private *lp = netdev_priv(dev);
2015
2016#ifdef HP100_DEBUG_B
2017 int ioaddr = dev->base_addr;
2018 hp100_outw(0x4216, TRACE);
2019 printk("hp100: %s: misc_interrupt\n", dev->name);
2020#endif
2021
2022 /* Note: Statistics counters clear when read. */
2023 lp->stats.rx_errors++;
2024 lp->stats.tx_errors++;
2025}
2026
2027static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2028{
2029 unsigned long flags;
2030
2031#ifdef HP100_DEBUG_B
2032 hp100_outw(0x4217, TRACE);
2033 printk("hp100: %s: clear_stats\n", dev->name);
2034#endif
2035
2036 spin_lock_irqsave(&lp->lock, flags);
2037 hp100_page(MAC_CTRL); /* get all statistics bytes */
2038 hp100_inw(DROPPED);
2039 hp100_inb(CRC);
2040 hp100_inb(ABORT);
2041 hp100_page(PERFORMANCE);
2042 spin_unlock_irqrestore(&lp->lock, flags);
2043}
6aa20a22 2044
1da177e4
LT		 2045
2046/*
2047 * multicast setup
2048 */
2049
2050/*
2051 * Set or clear the multicast filter for this adapter.
2052 */
2053
2054static void hp100_set_multicast_list(struct net_device *dev)
2055{
2056 unsigned long flags;
2057 int ioaddr = dev->base_addr;
2058 struct hp100_private *lp = netdev_priv(dev);
2059
2060#ifdef HP100_DEBUG_B
2061 hp100_outw(0x4218, TRACE);
2062 printk("hp100: %s: set_mc_list\n", dev->name);
2063#endif
2064
2065 spin_lock_irqsave(&lp->lock, flags);
2066 hp100_ints_off();
2067 hp100_page(MAC_CTRL);
2068 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2069
2070 if (dev->flags & IFF_PROMISC) {
2071 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2072 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2073 memset(&lp->hash_bytes, 0xff, 8);
2074 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2075 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2076 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2077#ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2078 if (dev->flags & IFF_ALLMULTI) {
2079 /* set hash filter to receive all multicast packets */
2080 memset(&lp->hash_bytes, 0xff, 8);
2081 } else {
2082 int i, j, idx;
2083 u_char *addrs;
2084 struct dev_mc_list *dmi;
2085
2086 memset(&lp->hash_bytes, 0x00, 8);
2087#ifdef HP100_DEBUG
2088 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2089#endif
2090 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2091 addrs = dmi->dmi_addr;
2092 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2093#ifdef HP100_DEBUG
e174961c
JB		 2094 printk("hp100: %s: multicast = %pM, ",
2095 dev->name, addrs);
1da177e4
LT		 2096#endif
2097 for (j = idx = 0; j < 6; j++) {
2098 idx ^= *addrs++ & 0x3f;
2099 printk(":%02x:", idx);
2100 }
2101#ifdef HP100_DEBUG
2102 printk("idx = %i\n", idx);
2103#endif
2104 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2105 }
2106 }
2107 }
2108#else
2109 memset(&lp->hash_bytes, 0xff, 8);
2110#endif
2111 } else {
2112 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2113 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2114 memset(&lp->hash_bytes, 0x00, 8);
2115 }
2116
2117 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2118 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2119 int i;
2120
2121 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2122 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2123 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2124
2125 hp100_page(MAC_ADDRESS);
2126 for (i = 0; i < 8; i++)
2127 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2128#ifdef HP100_DEBUG
2129 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2130 dev->name, lp->mac1_mode, lp->mac2_mode,
2131 lp->hash_bytes[0], lp->hash_bytes[1],
2132 lp->hash_bytes[2], lp->hash_bytes[3],
2133 lp->hash_bytes[4], lp->hash_bytes[5],
2134 lp->hash_bytes[6], lp->hash_bytes[7]);
2135#endif
2136
2137 if (lp->lan_type == HP100_LAN_100) {
2138#ifdef HP100_DEBUG
2139 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2140#endif
2141 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2142 }
2143 } else {
2144 int i;
2145 u_char old_hash_bytes[8];
2146
2147 hp100_page(MAC_ADDRESS);
2148 for (i = 0; i < 8; i++)
2149 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2150 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2151 for (i = 0; i < 8; i++)
2152 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2153#ifdef HP100_DEBUG
2154 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2155 dev->name, lp->hash_bytes[0],
2156 lp->hash_bytes[1], lp->hash_bytes[2],
2157 lp->hash_bytes[3], lp->hash_bytes[4],
2158 lp->hash_bytes[5], lp->hash_bytes[6],
2159 lp->hash_bytes[7]);
2160#endif
2161
2162 if (lp->lan_type == HP100_LAN_100) {
2163#ifdef HP100_DEBUG
2164 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2165#endif
2166 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2167 }
2168 }
2169 }
2170
2171 hp100_page(MAC_CTRL);
2172 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2173 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2174
2175 hp100_page(PERFORMANCE);
2176 hp100_ints_on();
2177 spin_unlock_irqrestore(&lp->lock, flags);
2178}
2179
2180/*
2181 * hardware interrupt handling
2182 */
2183
7d12e780 2184static irqreturn_t hp100_interrupt(int irq, void *dev_id)
1da177e4
LT		 2185{
2186 struct net_device *dev = (struct net_device *) dev_id;
2187 struct hp100_private *lp = netdev_priv(dev);
2188
2189 int ioaddr;
2190 u_int val;
2191
2192 if (dev == NULL)
2193 return IRQ_NONE;
2194 ioaddr = dev->base_addr;
2195
2196 spin_lock(&lp->lock);
2197
2198 hp100_ints_off();
2199
2200#ifdef HP100_DEBUG_B
2201 hp100_outw(0x4219, TRACE);
2202#endif
2203
2204 /* hp100_page( PERFORMANCE ); */
2205 val = hp100_inw(IRQ_STATUS);
2206#ifdef HP100_DEBUG_IRQ
2207 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2208 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2209 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2210#endif
2211
2212 if (val == 0) { /* might be a shared interrupt */
2213 spin_unlock(&lp->lock);
2214 hp100_ints_on();
2215 return IRQ_NONE;
2216 }
2217 /* We're only interested in those interrupts we really enabled. */
2218 /* val &= hp100_inw( IRQ_MASK ); */
2219
6aa20a22
JG		 2220 /*
2221 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2222 * is considered executed whenever the RX_PDL data structure is no longer
1da177e4
LT		 2223 * needed.
2224 */
2225 if (val & HP100_RX_PDL_FILL_COMPL) {
2226 if (lp->mode == 1)
2227 hp100_rx_bm(dev);
2228 else {
2229 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2230 }
2231 }
2232
6aa20a22 2233 /*
1da177e4
LT		 2234 * The RX_PACKET interrupt is set, when the receive packet counter is
2235 * non zero. We use this interrupt for receiving in slave mode. In
2236 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2237 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2238 * we somehow have missed a rx_pdl_fill_compl interrupt.
2239 */
2240
2241 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2242 if (lp->mode != 1) /* non busmaster */
2243 hp100_rx(dev);
2244 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2245 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2246 hp100_rx_bm(dev);
2247 }
2248 }
2249
2250 /*
2251 * Ack. that we have noticed the interrupt and thereby allow next one.
2252 * Note that this is now done after the slave rx function, since first
2253 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2254 * on the J2573.
2255 */
2256 hp100_outw(val, IRQ_STATUS);
2257
2258 /*
6aa20a22
JG		 2259 * RX_ERROR is set when a packet is dropped due to no memory resources on
2260 * the card or when a RCV_ERR occurs.
2261 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2262 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
1da177e4
LT		 2263 */
2264 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2265#ifdef HP100_DEBUG_IRQ
2266 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2267#endif
2268 hp100_update_stats(dev);
2269 if (lp->mode == 1) {
2270 hp100_rxfill(dev);
2271 hp100_clean_txring(dev);
2272 }
2273 }
2274
6aa20a22
JG		 2275 /*
2276 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
1da177e4
LT		 2277 */
2278 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2279 hp100_rxfill(dev);
2280
6aa20a22
JG		 2281 /*
2282 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2283 * is completed
1da177e4
LT		 2284 */
2285 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2286 hp100_clean_txring(dev);
2287
6aa20a22 2288 /*
1da177e4
LT		 2289 * MISC_ERROR is set when either the LAN link goes down or a detected
2290 * bus error occurs.
2291 */
2292 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2293#ifdef HP100_DEBUG_IRQ
2294 printk
2295 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2296 dev->name);
2297#endif
2298 if (lp->mode == 1) {
2299 hp100_clean_txring(dev);
2300 hp100_rxfill(dev);
2301 }
2302 hp100_misc_interrupt(dev);
2303 }
2304
2305 spin_unlock(&lp->lock);
2306 hp100_ints_on();
2307 return IRQ_HANDLED;
2308}
2309
2310/*
2311 * some misc functions
2312 */
2313
2314static void hp100_start_interface(struct net_device *dev)
2315{
2316 unsigned long flags;
2317 int ioaddr = dev->base_addr;
2318 struct hp100_private *lp = netdev_priv(dev);
2319
2320#ifdef HP100_DEBUG_B
2321 hp100_outw(0x4220, TRACE);
2322 printk("hp100: %s: hp100_start_interface\n", dev->name);
2323#endif
2324
2325 spin_lock_irqsave(&lp->lock, flags);
2326
2327 /* Ensure the adapter does not want to request an interrupt when */
2328 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2329 hp100_page(PERFORMANCE);
2330 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2331 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2332 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2333 OPTION_LSW);
2334 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2335 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2336
2337 if (lp->mode == 1) {
2338 /* Make sure BM bit is set... */
2339 hp100_page(HW_MAP);
2340 hp100_orb(HP100_BM_MASTER, BM);
2341 hp100_rxfill(dev);
2342 } else if (lp->mode == 2) {
2343 /* Enable memory mapping. Note: Don't do this when busmaster. */
2344 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2345 }
2346
2347 hp100_page(PERFORMANCE);
2348 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2349 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2350
2351 /* enable a few interrupts: */
2352 if (lp->mode == 1) { /* busmaster mode */
2353 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2354 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2355 /* HP100_RX_PACKET | */
2356 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2357 /* HP100_TX_PDA_ZERO | */
2358 HP100_TX_COMPLETE |
2359 /* HP100_MISC_ERROR | */
2360 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2361 } else {
2362 hp100_outw(HP100_RX_PACKET |
2363 HP100_RX_ERROR | HP100_SET_HB |
2364 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2365 }
2366
2367 /* Note : before hp100_set_multicast_list(), because it will play with
2368 * spinlock itself... Jean II */
2369 spin_unlock_irqrestore(&lp->lock, flags);
2370
2371 /* Enable MAC Tx and RX, set MAC modes, ... */
2372 hp100_set_multicast_list(dev);
2373}
2374
2375static void hp100_stop_interface(struct net_device *dev)
2376{
2377 struct hp100_private *lp = netdev_priv(dev);
2378 int ioaddr = dev->base_addr;
2379 u_int val;
2380
2381#ifdef HP100_DEBUG_B
2382 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2383 hp100_outw(0x4221, TRACE);
2384#endif
2385
2386 if (lp->mode == 1)
2387 hp100_BM_shutdown(dev);
2388 else {
2389 /* Note: MMAP_DIS will be reenabled by start_interface */
2390 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2391 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2392 OPTION_LSW);
2393 val = hp100_inw(OPTION_LSW);
2394
2395 hp100_page(MAC_CTRL);
2396 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2397
2398 if (!(val & HP100_HW_RST))
2399 return; /* If reset, imm. return ... */
2400 /* ... else: busy wait until idle */
2401 for (val = 0; val < 6000; val++)
2402 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2403 hp100_page(PERFORMANCE);
2404 return;
2405 }
2406 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2407 hp100_page(PERFORMANCE);
2408 }
2409}
2410
2411static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2412{
2413 int i;
2414 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2415
2416#ifdef HP100_DEBUG_B
2417 hp100_outw(0x4222, TRACE);
2418#endif
2419
2420 hp100_page(EEPROM_CTRL);
2421 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2422 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2423 for (i = 0; i < 10000; i++)
2424 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2425 return;
2426 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2427}
2428
2429/* Sense connection status.
2430 * return values: LAN_10 - Connected to 10Mbit/s network
2431 * LAN_100 - Connected to 100Mbit/s network
2432 * LAN_ERR - not connected or 100Mbit/s Hub down
2433 */
2434static int hp100_sense_lan(struct net_device *dev)
2435{
2436 int ioaddr = dev->base_addr;
2437 u_short val_VG, val_10;
2438 struct hp100_private *lp = netdev_priv(dev);
2439
2440#ifdef HP100_DEBUG_B
2441 hp100_outw(0x4223, TRACE);
2442#endif
2443
2444 hp100_page(MAC_CTRL);
2445 val_10 = hp100_inb(10_LAN_CFG_1);
2446 val_VG = hp100_inb(VG_LAN_CFG_1);
2447 hp100_page(PERFORMANCE);
2448#ifdef HP100_DEBUG
2449 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2450 dev->name, val_VG, val_10);
2451#endif
2452
2453 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2454 return HP100_LAN_10;
2455
2456 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2457 /*
2458 * This can be overriden by dos utility, so if this has no effect,
2459 * perhaps you need to download that utility from HP and set card
2460 * back to "auto detect".
2461 */
2462 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2463 hp100_page(MAC_CTRL);
2464 hp100_outb(val_10, 10_LAN_CFG_1);
2465 hp100_page(PERFORMANCE);
2466 return HP100_LAN_COAX;
2467 }
2468
2469 /* Those cards don't have a 100 Mbit connector */
2470 if ( !strcmp(lp->id, "HWP1920") ||
6aa20a22
JG		 2471 (lp->pci_dev &&
2472 lp->pci_dev->vendor == PCI_VENDOR_ID &&
1da177e4
LT		 2473 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2474 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2475 return HP100_LAN_ERR;
6aa20a22 2476
1da177e4
LT		 2477 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2478 return HP100_LAN_100;
2479 return HP100_LAN_ERR;
2480}
2481
2482static int hp100_down_vg_link(struct net_device *dev)
2483{
2484 struct hp100_private *lp = netdev_priv(dev);
2485 int ioaddr = dev->base_addr;
2486 unsigned long time;
2487 long savelan, newlan;
2488
2489#ifdef HP100_DEBUG_B
2490 hp100_outw(0x4224, TRACE);
2491 printk("hp100: %s: down_vg_link\n", dev->name);
2492#endif
2493
2494 hp100_page(MAC_CTRL);
2495 time = jiffies + (HZ / 4);
2496 do {
2497 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2498 break;
3173c890
NA		 2499 if (!in_interrupt())
2500 schedule_timeout_interruptible(1);
1da177e4
LT		 2501 } while (time_after(time, jiffies));
2502
2503 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2504 return 0;
2505
2506 /* Drop the VG Link by clearing the link up cmd and load addr. */
2507
2508 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2509 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2510
2511 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2512 time = jiffies + (HZ / 2);
2513 do {
2514 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2515 break;
3173c890
NA		 2516 if (!in_interrupt())
2517 schedule_timeout_interruptible(1);
1da177e4
LT		 2518 } while (time_after(time, jiffies));
2519
2520#ifdef HP100_DEBUG
2521 if (time_after_eq(jiffies, time))
2522 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2523#endif
2524
2525 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2526 /* logout under traffic (even though all the status bits are cleared), */
2527 /* do this workaround to get the Rev 1 MAC in its idle state */
2528 if (lp->chip == HP100_CHIPID_LASSEN) {
2529 /* Reset VG MAC to insure it leaves the logoff state even if */
2530 /* the Hub is still emitting tones */
2531 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2532 udelay(1500); /* wait for >1ms */
2533 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2534 udelay(1500);
2535 }
2536
2537 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2538 /* to get the VG mac to full reset. This is not req.d with later chips */
2539 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2540 /* selected again! This will be left to the connect hub function to */
2541 /* perform if desired. */
2542 if (lp->chip == HP100_CHIPID_LASSEN) {
2543 /* Have to write to 10 and 100VG control registers simultaneously */
2544 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2545 newlan &= ~(HP100_VG_SEL << 16);
2546 newlan |= (HP100_DOT3_MAC) << 8;
2547 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2548 hp100_outl(newlan, 10_LAN_CFG_1);
2549
2550 /* Conditionally stall for 5sec on VG selected. */
2551 time = jiffies + (HZ * 5);
2552 do {
2553 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2554 break;
3173c890
NA		 2555 if (!in_interrupt())
2556 schedule_timeout_interruptible(1);
1da177e4
LT		 2557 } while (time_after(time, jiffies));
2558
2559 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2560 hp100_outl(savelan, 10_LAN_CFG_1);
2561 }
2562
2563 time = jiffies + (3 * HZ); /* Timeout 3s */
2564 do {
2565 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2566 break;
3173c890
NA		 2567 if (!in_interrupt())
2568 schedule_timeout_interruptible(1);
1da177e4
LT		 2569 } while (time_after(time, jiffies));
2570
2571 if (time_before_eq(time, jiffies)) {
2572#ifdef HP100_DEBUG
2573 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2574#endif
2575 return -EIO;
2576 }
2577
2578 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2579 do {
3173c890
NA		 2580 if (!in_interrupt())
2581 schedule_timeout_interruptible(1);
1da177e4
LT		 2582 } while (time_after(time, jiffies));
2583
2584 return 0;
2585}
2586
2587static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2588{
2589 int ioaddr = dev->base_addr;
2590 struct hp100_private *lp = netdev_priv(dev);
2591 u_short val = 0;
2592 unsigned long time;
2593 int startst;
2594
2595#ifdef HP100_DEBUG_B
2596 hp100_outw(0x4225, TRACE);
2597 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2598#endif
2599
2600 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2601 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2602 * promiscuous mode change)
2603 */
2604 hp100_page(MAC_CTRL);
2605 startst = hp100_inb(VG_LAN_CFG_1);
2606 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2607#ifdef HP100_DEBUG_TRAINING
2608 printk("hp100: %s: Start training\n", dev->name);
2609#endif
2610
2611 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2612 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2613
2614 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2615 /* entry then temporarily put them into force 100Mbit mode */
2616 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2617 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2618
2619 /* Drop the VG link by zeroing Link Up Command and Load Address */
2620 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2621
2622#ifdef HP100_DEBUG_TRAINING
2623 printk("hp100: %s: Bring down the link\n", dev->name);
2624#endif
2625
2626 /* Wait for link to drop */
2627 time = jiffies + (HZ / 10);
2628 do {
2629 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2630 break;
3173c890
NA		 2631 if (!in_interrupt())
2632 schedule_timeout_interruptible(1);
1da177e4
LT		 2633 } while (time_after(time, jiffies));
2634
2635 /* Start an addressed training and optionally request promiscuous port */
2636 if ((dev->flags) & IFF_PROMISC) {
2637 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2638 if (lp->chip == HP100_CHIPID_LASSEN)
2639 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2640 } else {
2641 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2642 /* For ETR parts we need to reset the prom. bit in the training
2643 * register, otherwise promiscious mode won't be disabled.
2644 */
2645 if (lp->chip == HP100_CHIPID_LASSEN) {
2646 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2647 }
2648 }
2649
2650 /* With ETR parts, frame format request bits can be set. */
2651 if (lp->chip == HP100_CHIPID_LASSEN)
2652 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2653
2654 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2655
2656 /* Note: Next wait could be omitted for Hood and earlier chips under */
2657 /* certain circumstances */
2658 /* TODO: check if hood/earlier and skip wait. */
2659
2660 /* Wait for either short timeout for VG tones or long for login */
2661 /* Wait for the card hardware to signalise link cable status ok... */
2662 hp100_page(MAC_CTRL);
2663 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2664 do {
2665 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2666 break;
3173c890
NA		 2667 if (!in_interrupt())
2668 schedule_timeout_interruptible(1);
1da177e4
LT		 2669 } while (time_before(jiffies, time));
2670
2671 if (time_after_eq(jiffies, time)) {
2672#ifdef HP100_DEBUG_TRAINING
2673 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2674#endif
2675 } else {
2676#ifdef HP100_DEBUG_TRAINING
2677 printk
2678 ("hp100: %s: HUB tones detected. Trying to train.\n",
2679 dev->name);
2680#endif
2681
2682 time = jiffies + (2 * HZ); /* again a timeout */
2683 do {
2684 val = hp100_inb(VG_LAN_CFG_1);
2685 if ((val & (HP100_LINK_UP_ST))) {
2686#ifdef HP100_DEBUG_TRAINING
2687 printk("hp100: %s: Passed training.\n", dev->name);
2688#endif
2689 break;
2690 }
3173c890
NA		 2691 if (!in_interrupt())
2692 schedule_timeout_interruptible(1);
1da177e4
LT		 2693 } while (time_after(time, jiffies));
2694 }
2695
2696 /* If LINK_UP_ST is set, then we are logged into the hub. */
2697 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2698#ifdef HP100_DEBUG_TRAINING
2699 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2700 if (lp->chip == HP100_CHIPID_LASSEN) {
2701 val = hp100_inw(TRAIN_ALLOW);
2702 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2703 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2704 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2705 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2706 }
2707#endif
2708 } else {
2709 /* If LINK_UP_ST is not set, login was not successful */
2710 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2711 if (lp->chip == HP100_CHIPID_LASSEN) {
2712 /* Check allowed Register to find out why there is a problem. */
2713 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2714#ifdef HP100_DEBUG_TRAINING
2715 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2716#endif
2717 if (val & HP100_MALLOW_ACCDENIED)
2718 printk("hp100: %s: HUB access denied.\n", dev->name);
2719 if (val & HP100_MALLOW_CONFIGURE)
2720 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2721 if (val & HP100_MALLOW_DUPADDR)
2722 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2723 }
2724 }
2725
2726 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2727 /* to auto-select mode */
2728
2729 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2730 hp100_page(MAC_CTRL);
2731 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2732 }
2733
2734 val = hp100_inb(VG_LAN_CFG_1);
2735
2736 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2737 hp100_page(PERFORMANCE);
2738 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2739
2740 if (val & HP100_LINK_UP_ST)
2741 return (0); /* login was ok */
2742 else {
2743 printk("hp100: %s: Training failed.\n", dev->name);
2744 hp100_down_vg_link(dev);
2745 return -EIO;
2746 }
2747 }
2748 /* no forced relogin & already link there->no training. */
2749 return -EIO;
2750}
2751
2752static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2753{
2754 int ioaddr = dev->base_addr;
2755 struct hp100_private *lp = netdev_priv(dev);
2756
2757#ifdef HP100_DEBUG_B
2758 hp100_outw(0x4226, TRACE);
2759 printk("hp100: %s: cascade_reset\n", dev->name);
2760#endif
2761
2762 if (enable) {
2763 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2764 if (lp->chip == HP100_CHIPID_LASSEN) {
2765 /* Lassen requires a PCI transmit fifo reset */
2766 hp100_page(HW_MAP);
2767 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2768 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2769 /* Wait for min. 300 ns */
2770 /* we can't use jiffies here, because it may be */
2771 /* that we have disabled the timer... */
2772 udelay(400);
2773 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2774 hp100_page(PERFORMANCE);
2775 }
2776 } else { /* bring out of reset */
2777 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2778 udelay(400);
2779 hp100_page(PERFORMANCE);
2780 }
2781}
2782
2783#ifdef HP100_DEBUG
2784void hp100_RegisterDump(struct net_device *dev)
2785{
2786 int ioaddr = dev->base_addr;
2787 int Page;
2788 int Register;
2789
2790 /* Dump common registers */
2791 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2792 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2793 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2794 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2795 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2796
2797 /* Dump paged registers */
2798 for (Page = 0; Page < 8; Page++) {
2799 /* Dump registers */
2800 printk("page: 0x%.2x\n", Page);
2801 outw(Page, ioaddr + 0x02);
2802 for (Register = 0x8; Register < 0x22; Register += 2) {
2803 /* Display Register contents except data port */
2804 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2805 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2806 }
2807 }
2808 }
2809 hp100_page(PERFORMANCE);
2810}
2811#endif
2812
2813
2814static void cleanup_dev(struct net_device *d)
2815{
2816 struct hp100_private *p = netdev_priv(d);
2817
2818 unregister_netdev(d);
2819 release_region(d->base_addr, HP100_REGION_SIZE);
2820
2821 if (p->mode == 1) /* busmaster */
6aa20a22
JG		 2822 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2823 p->page_vaddr_algn,
1da177e4
LT		 2824 virt_to_whatever(d, p->page_vaddr_algn));
2825 if (p->mem_ptr_virt)
2826 iounmap(p->mem_ptr_virt);
2827
2828 free_netdev(d);
2829}
2830
2831#ifdef CONFIG_EISA
2832static int __init hp100_eisa_probe (struct device *gendev)
2833{
2834 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2835 struct eisa_device *edev = to_eisa_device(gendev);
2836 int err;
2837
2838 if (!dev)
2839 return -ENOMEM;
2840
1da177e4
LT		 2841 SET_NETDEV_DEV(dev, &edev->dev);
2842
2843 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2844 if (err)
2845 goto out1;
2846
1da177e4 2847#ifdef HP100_DEBUG
6aa20a22 2848 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
1da177e4
LT		 2849 dev->base_addr);
2850#endif
2851 gendev->driver_data = dev;
2852 return 0;
1da177e4
LT		 2853 out1:
2854 free_netdev(dev);
2855 return err;
2856}
2857
2858static int __devexit hp100_eisa_remove (struct device *gendev)
2859{
2860 struct net_device *dev = gendev->driver_data;
2861 cleanup_dev(dev);
2862 return 0;
2863}
2864
2865static struct eisa_driver hp100_eisa_driver = {
2866 .id_table = hp100_eisa_tbl,
2867 .driver = {
2868 .name = "hp100",
2869 .probe = hp100_eisa_probe,
2870 .remove = __devexit_p (hp100_eisa_remove),
2871 }
2872};
2873#endif
2874
2875#ifdef CONFIG_PCI
2876static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2877 const struct pci_device_id *ent)
2878{
2879 struct net_device *dev;
2880 int ioaddr;
2881 u_short pci_command;
2882 int err;
2883
2884 if (pci_enable_device(pdev))
2885 return -ENODEV;
2886
2887 dev = alloc_etherdev(sizeof(struct hp100_private));
2888 if (!dev) {
2889 err = -ENOMEM;
2890 goto out0;
2891 }
2892
1da177e4
LT		 2893 SET_NETDEV_DEV(dev, &pdev->dev);
2894
2895 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2896 if (!(pci_command & PCI_COMMAND_IO)) {
2897#ifdef HP100_DEBUG
2898 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2899#endif
2900 pci_command |= PCI_COMMAND_IO;
2901 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2902 }
2903
2904 if (!(pci_command & PCI_COMMAND_MASTER)) {
2905#ifdef HP100_DEBUG
2906 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2907#endif
2908 pci_command |= PCI_COMMAND_MASTER;
2909 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2910 }
6aa20a22 2911
1da177e4
LT		 2912 ioaddr = pci_resource_start(pdev, 0);
2913 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
6aa20a22 2914 if (err)
1da177e4 2915 goto out1;
6aa20a22 2916
1da177e4
LT		 2917#ifdef HP100_DEBUG
2918 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2919#endif
2920 pci_set_drvdata(pdev, dev);
2921 return 0;
1da177e4
LT		 2922 out1:
2923 free_netdev(dev);
2924 out0:
2925 pci_disable_device(pdev);
2926 return err;
2927}
2928
2929static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2930{
2931 struct net_device *dev = pci_get_drvdata(pdev);
2932
2933 cleanup_dev(dev);
2934 pci_disable_device(pdev);
2935}
2936
2937
2938static struct pci_driver hp100_pci_driver = {
2939 .name = "hp100",
2940 .id_table = hp100_pci_tbl,
2941 .probe = hp100_pci_probe,
2942 .remove = __devexit_p(hp100_pci_remove),
2943};
2944#endif
2945
2946/*
2947 * module section
2948 */
2949
2950MODULE_LICENSE("GPL");
c1017a4c 2951MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, "
1da177e4
LT		 2952 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2953MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2954
2955/*
2956 * Note: to register three isa devices, use:
2957 * option hp100 hp100_port=0,0,0
2958 * to register one card at io 0x280 as eth239, use:
2959 * option hp100 hp100_port=0x280
2960 */
2961#if defined(MODULE) && defined(CONFIG_ISA)
2962#define HP100_DEVICES 5
2963/* Parameters set by insmod */
2964static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2965module_param_array(hp100_port, int, NULL, 0);
2966
2967/* List of devices */
2968static struct net_device *hp100_devlist[HP100_DEVICES];
2969
2970static int __init hp100_isa_init(void)
2971{
2972 struct net_device *dev;
2973 int i, err, cards = 0;
2974
2975 /* Don't autoprobe ISA bus */
2976 if (hp100_port[0] == 0)
2977 return -ENODEV;
2978
2979 /* Loop on all possible base addresses */
2980 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2981 dev = alloc_etherdev(sizeof(struct hp100_private));
2982 if (!dev) {
2983 printk(KERN_WARNING "hp100: no memory for network device\n");
2984 while (cards > 0)
2985 cleanup_dev(hp100_devlist[--cards]);
2986
2987 return -ENOMEM;
2988 }
1da177e4
LT		 2989
2990 err = hp100_isa_probe(dev, hp100_port[i]);
b1fc5505 2991 if (!err)
2992 hp100_devlist[cards++] = dev;
2993 else
1da177e4
LT		 2994 free_netdev(dev);
2995 }
2996
2997 return cards > 0 ? 0 : -ENODEV;
2998}
2999
c79d9c9e 3000static void hp100_isa_cleanup(void)
1da177e4
LT		 3001{
3002 int i;
3003
3004 for (i = 0; i < HP100_DEVICES; i++) {
3005 struct net_device *dev = hp100_devlist[i];
3006 if (dev)
3007 cleanup_dev(dev);
3008 }
3009}
3010#else
3011#define hp100_isa_init() (0)
3012#define hp100_isa_cleanup() do { } while(0)
3013#endif
3014
3015static int __init hp100_module_init(void)
3016{
3017 int err;
3018
3019 err = hp100_isa_init();
3020 if (err && err != -ENODEV)
3021 goto out;
3022#ifdef CONFIG_EISA
3023 err = eisa_driver_register(&hp100_eisa_driver);
6aa20a22 3024 if (err && err != -ENODEV)
1da177e4
LT		 3025 goto out2;
3026#endif
3027#ifdef CONFIG_PCI
7e3e8b05 3028 err = pci_register_driver(&hp100_pci_driver);
6aa20a22 3029 if (err && err != -ENODEV)
1da177e4
LT		 3030 goto out3;
3031#endif
3032 out:
3033 return err;
3034 out3:
3035#ifdef CONFIG_EISA
3036 eisa_driver_unregister (&hp100_eisa_driver);
3037 out2:
3038#endif
3039 hp100_isa_cleanup();
3040 goto out;
3041}
3042
3043
3044static void __exit hp100_module_exit(void)
3045{
3046 hp100_isa_cleanup();
3047#ifdef CONFIG_EISA
3048 eisa_driver_unregister (&hp100_eisa_driver);
3049#endif
3050#ifdef CONFIG_PCI
3051 pci_unregister_driver (&hp100_pci_driver);
3052#endif
3053}
3054
3055module_init(hp100_module_init)
3056module_exit(hp100_module_exit)
Linux kernel - Deliverables
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