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IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
[net-next-2.6.git] / drivers / net / hp100.c
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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**
11** Maintained by: Jaroslav Kysela <perex@suse.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
407 SET_MODULE_OWNER(dev);
408
409#ifdef HP100_DEBUG_B
410 hp100_outw(0x4200, TRACE);
411 printk("hp100: %s: probe\n", dev->name);
412#endif
413
414 if (unit >= 0) {
415 sprintf(dev->name, "eth%d", unit);
416 netdev_boot_setup_check(dev);
417 }
418
419 err = hp100_isa_probe(dev, dev->base_addr);
420 if (err)
421 goto out;
422
1da177e4 423 return dev;
1da177e4
LT		 424 out:
425 free_netdev(dev);
426 return ERR_PTR(err);
427}
7525d4bf 428#endif /* !MODULE && CONFIG_ISA */
1da177e4
LT		 429
430static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
431 u_char bus, struct pci_dev *pci_dev)
432{
433 int i;
434 int err = -ENODEV;
435 const char *eid;
436 u_int chip;
437 u_char uc;
438 u_int memory_size = 0, virt_memory_size = 0;
439 u_short local_mode, lsw;
440 short mem_mapped;
441 unsigned long mem_ptr_phys;
442 void __iomem *mem_ptr_virt;
443 struct hp100_private *lp;
444
445#ifdef HP100_DEBUG_B
446 hp100_outw(0x4201, TRACE);
447 printk("hp100: %s: probe1\n", dev->name);
448#endif
449
450 /* memory region for programmed i/o */
451 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
452 goto out1;
453
6aa20a22 454 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
1da177e4
LT		 455 goto out2;
456
457 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
458#ifdef HP100_DEBUG
459 if (chip == HP100_CHIPID_SHASTA)
460 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
461 else if (chip == HP100_CHIPID_RAINIER)
462 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
463 else if (chip == HP100_CHIPID_LASSEN)
464 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
465 else
466 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
467#endif
468
469 dev->base_addr = ioaddr;
470
471 eid = hp100_read_id(ioaddr);
472 if (eid == NULL) { /* bad checksum? */
473 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
474 goto out2;
475 }
476
477 hp100_page(ID_MAC_ADDR);
478 for (i = uc = 0; i < 7; i++)
479 uc += hp100_inb(LAN_ADDR + i);
480 if (uc != 0xff) {
481 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
482 err = -EIO;
483 goto out2;
484 }
485
486 /* Make sure, that all registers are correctly updated... */
487
488 hp100_load_eeprom(dev, ioaddr);
489 wait();
490
491 /*
492 * Determine driver operation mode
493 *
494 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
495 * force driver modes:
496 * hp100_mode=1 -> default, use busmaster mode if configured.
6aa20a22 497 * hp100_mode=2 -> enable shared memory mode
1da177e4
LT		 498 * hp100_mode=3 -> force use of i/o mapped mode.
499 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
500 */
501
502 /*
503 * LSW values:
504 * 0x2278 -> J2585B, PnP shared memory mode
505 * 0x2270 -> J2585B, shared memory mode, 0xdc000
506 * 0xa23c -> J2585B, I/O mapped mode
507 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
508 * 0x2220 -> EISA HP, I/O (Shasta Chip)
509 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
510 */
511
512#if 0
513 local_mode = 0x2270;
514 hp100_outw(0xfefe, OPTION_LSW);
515 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
516#endif
517
518 /* hp100_mode value maybe used in future by another card */
519 local_mode = hp100_mode;
520 if (local_mode < 1 || local_mode > 4)
521 local_mode = 1; /* default */
522#ifdef HP100_DEBUG
523 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
524 hp100_inw(OPTION_LSW));
525#endif
526
527 if (local_mode == 3) {
528 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
529 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
530 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
531 printk("hp100: IO mapped mode forced.\n");
532 } else if (local_mode == 2) {
533 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
534 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
535 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
536 printk("hp100: Shared memory mode requested.\n");
537 } else if (local_mode == 4) {
538 if (chip == HP100_CHIPID_LASSEN) {
539 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
540 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
541 printk("hp100: Busmaster mode requested.\n");
542 }
543 local_mode = 1;
544 }
545
546 if (local_mode == 1) { /* default behaviour */
547 lsw = hp100_inw(OPTION_LSW);
548
549 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
550 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
551#ifdef HP100_DEBUG
552 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
553#endif
554 local_mode = 3;
555 } else if (chip == HP100_CHIPID_LASSEN &&
556 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
557 /* Conversion to new PCI API :
558 * I don't have the doc, but I assume that the card
559 * can map the full 32bit address space.
560 * Also, we can have EISA Busmaster cards (not tested),
561 * so beware !!! - Jean II */
562 if((bus == HP100_BUS_PCI) &&
1e7f0bd8 563 (pci_set_dma_mask(pci_dev, DMA_32BIT_MASK))) {
1da177e4
LT		 564 /* Gracefully fallback to shared memory */
565 goto busmasterfail;
566 }
567 printk("hp100: Busmaster mode enabled.\n");
568 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
569 } else {
570 busmasterfail:
571#ifdef HP100_DEBUG
572 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
573 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
574#endif
575 /* In this case, try shared memory mode */
576 local_mode = 2;
577 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
578 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
579 }
580 }
581#ifdef HP100_DEBUG
582 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
583#endif
584
585 /* Check for shared memory on the card, eventually remap it */
586 hp100_page(HW_MAP);
587 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
588 mem_ptr_phys = 0UL;
589 mem_ptr_virt = NULL;
590 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
591 virt_memory_size = 0;
592
593 /* For memory mapped or busmaster mode, we want the memory address */
594 if (mem_mapped || (local_mode == 1)) {
595 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
596 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
597
598 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
599 printk("hp100: Can only use programmed i/o mode.\n");
600 mem_ptr_phys = 0;
601 mem_mapped = 0;
602 local_mode = 3; /* Use programmed i/o */
603 }
604
605 /* We do not need access to shared memory in busmaster mode */
606 /* However in slave mode we need to remap high (>1GB) card memory */
607 if (local_mode != 1) { /* = not busmaster */
608 /* We try with smaller memory sizes, if ioremap fails */
609 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
610 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
611#ifdef HP100_DEBUG
612 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
613#endif
614 } else {
615#ifdef HP100_DEBUG
616 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);
617#endif
618 break;
619 }
620 }
621
622 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
623 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
624 local_mode = 3;
625 virt_memory_size = 0;
626 }
627 }
628 }
629
630 if (local_mode == 3) { /* io mapped forced */
631 mem_mapped = 0;
632 mem_ptr_phys = 0;
633 mem_ptr_virt = NULL;
634 printk("hp100: Using (slow) programmed i/o mode.\n");
635 }
636
637 /* Initialise the "private" data structure for this card. */
638 lp = netdev_priv(dev);
639
640 spin_lock_init(&lp->lock);
641 strlcpy(lp->id, eid, HP100_SIG_LEN);
642 lp->chip = chip;
643 lp->mode = local_mode;
644 lp->bus = bus;
645 lp->pci_dev = pci_dev;
646 lp->priority_tx = hp100_priority_tx;
647 lp->rx_ratio = hp100_rx_ratio;
648 lp->mem_ptr_phys = mem_ptr_phys;
649 lp->mem_ptr_virt = mem_ptr_virt;
650 hp100_page(ID_MAC_ADDR);
651 lp->soft_model = hp100_inb(SOFT_MODEL);
652 lp->mac1_mode = HP100_MAC1MODE3;
653 lp->mac2_mode = HP100_MAC2MODE3;
654 memset(&lp->hash_bytes, 0x00, 8);
655
656 dev->base_addr = ioaddr;
657
658 lp->memory_size = memory_size;
659 lp->virt_memory_size = virt_memory_size;
660 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
661
662 dev->open = hp100_open;
663 dev->stop = hp100_close;
664
665 if (lp->mode == 1) /* busmaster */
666 dev->hard_start_xmit = hp100_start_xmit_bm;
667 else
668 dev->hard_start_xmit = hp100_start_xmit;
669
670 dev->get_stats = hp100_get_stats;
671 dev->set_multicast_list = &hp100_set_multicast_list;
672
673 /* Ask the card for which IRQ line it is configured */
674 if (bus == HP100_BUS_PCI) {
675 dev->irq = pci_dev->irq;
676 } else {
677 hp100_page(HW_MAP);
678 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
679 if (dev->irq == 2)
680 dev->irq = 9;
681 }
682
683 if (lp->mode == 1) /* busmaster */
684 dev->dma = 4;
685
686 /* Ask the card for its MAC address and store it for later use. */
687 hp100_page(ID_MAC_ADDR);
688 for (i = uc = 0; i < 6; i++)
689 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
690
691 /* Reset statistics (counters) */
692 hp100_clear_stats(lp, ioaddr);
693
694 /* If busmaster mode is wanted, a dma-capable memory area is needed for
6aa20a22 695 * the rx and tx PDLs
1da177e4 696 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
6aa20a22 697 * needed for the allocation of the memory area.
1da177e4
LT		 698 */
699
700 /* TODO: We do not need this with old cards, where PDLs are stored
701 * in the cards shared memory area. But currently, busmaster has been
702 * implemented/tested only with the lassen chip anyway... */
703 if (lp->mode == 1) { /* busmaster */
704 dma_addr_t page_baddr;
705 /* Get physically continous memory for TX & RX PDLs */
706 /* Conversion to new PCI API :
707 * Pages are always aligned and zeroed, no need to it ourself.
708 * Doc says should be OK for EISA bus as well - Jean II */
709 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
710 err = -ENOMEM;
711 goto out2;
712 }
713 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
714
715#ifdef HP100_DEBUG_BM
716 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);
717#endif
718 lp->rxrcommit = lp->txrcommit = 0;
719 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
720 lp->txrhead = lp->txrtail = &(lp->txring[0]);
721 }
722
723 /* Initialise the card. */
6aa20a22 724 /* (I'm not really sure if it's a good idea to do this during probing, but
1da177e4
LT		 725 * like this it's assured that the lan connection type can be sensed
726 * correctly)
727 */
728 hp100_hwinit(dev);
729
730 /* Try to find out which kind of LAN the card is connected to. */
731 lp->lan_type = hp100_sense_lan(dev);
732
733 /* Print out a message what about what we think we have probed. */
734 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
735 switch (bus) {
736 case HP100_BUS_EISA:
737 printk("EISA");
738 break;
739 case HP100_BUS_PCI:
740 printk("PCI");
741 break;
742 default:
743 printk("ISA");
744 break;
745 }
746 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
747
748 if (lp->mode == 2) { /* memory mapped */
749 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
750 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
751 if (mem_ptr_virt)
752 printk(" (virtual base %p)", mem_ptr_virt);
753 printk(".\n");
754
755 /* Set for info when doing ifconfig */
756 dev->mem_start = mem_ptr_phys;
757 dev->mem_end = mem_ptr_phys + lp->memory_size;
758 }
759
760 printk("hp100: ");
761 if (lp->lan_type != HP100_LAN_ERR)
762 printk("Adapter is attached to ");
763 switch (lp->lan_type) {
764 case HP100_LAN_100:
765 printk("100Mb/s Voice Grade AnyLAN network.\n");
766 break;
767 case HP100_LAN_10:
768 printk("10Mb/s network (10baseT).\n");
769 break;
770 case HP100_LAN_COAX:
771 printk("10Mb/s network (coax).\n");
772 break;
773 default:
774 printk("Warning! Link down.\n");
775 }
776
b1fc5505
HX		 777 err = register_netdev(dev);
778 if (err)
779 goto out3;
780
1da177e4 781 return 0;
b1fc5505
HX		 782out3:
783 if (local_mode == 1)
6aa20a22
JG		 784 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
785 lp->page_vaddr_algn,
b1fc5505
HX		 786 virt_to_whatever(dev, lp->page_vaddr_algn));
787 if (mem_ptr_virt)
788 iounmap(mem_ptr_virt);
1da177e4
LT		 789out2:
790 release_region(ioaddr, HP100_REGION_SIZE);
791out1:
b1fc5505 792 return err;
1da177e4
LT		 793}
794
795/* This procedure puts the card into a stable init state */
796static void hp100_hwinit(struct net_device *dev)
797{
798 int ioaddr = dev->base_addr;
799 struct hp100_private *lp = netdev_priv(dev);
800
801#ifdef HP100_DEBUG_B
802 hp100_outw(0x4202, TRACE);
803 printk("hp100: %s: hwinit\n", dev->name);
804#endif
805
806 /* Initialise the card. -------------------------------------------- */
807
808 /* Clear all pending Ints and disable Ints */
809 hp100_page(PERFORMANCE);
810 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
811 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
812
813 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
814 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
815
816 if (lp->mode == 1) {
817 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
818 wait();
819 } else {
820 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
821 hp100_cascade_reset(dev, 1);
822 hp100_page(MAC_CTRL);
823 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
824 }
825
826 /* Initiate EEPROM reload */
827 hp100_load_eeprom(dev, 0);
828
829 wait();
830
831 /* Go into reset again. */
832 hp100_cascade_reset(dev, 1);
833
834 /* Set Option Registers to a safe state */
835 hp100_outw(HP100_DEBUG_EN |
836 HP100_RX_HDR |
837 HP100_EE_EN |
838 HP100_BM_WRITE |
839 HP100_BM_READ | HP100_RESET_HB |
840 HP100_FAKE_INT |
841 HP100_INT_EN |
842 HP100_MEM_EN |
843 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
844
845 hp100_outw(HP100_TRI_INT |
846 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
847
848 hp100_outb(HP100_PRIORITY_TX |
849 HP100_ADV_NXT_PKT |
850 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
851
852 /* TODO: Configure MMU for Ram Test. */
853 /* TODO: Ram Test. */
854
855 /* Re-check if adapter is still at same i/o location */
856 /* (If the base i/o in eeprom has been changed but the */
857 /* registers had not been changed, a reload of the eeprom */
858 /* would move the adapter to the address stored in eeprom */
859
860 /* TODO: Code to implement. */
861
862 /* Until here it was code from HWdiscover procedure. */
863 /* Next comes code from mmuinit procedure of SCO BM driver which is
864 * called from HWconfigure in the SCO driver. */
865
6aa20a22 866 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
1da177e4
LT		 867 * multicast filter...
868 */
869 hp100_mmuinit(dev);
870
871 /* We don't turn the interrupts on here - this is done by start_interface. */
872 wait(); /* TODO: Do we really need this? */
873
874 /* Enable Hardware (e.g. unreset) */
875 hp100_cascade_reset(dev, 0);
876
877 /* ------- initialisation complete ----------- */
878
879 /* Finally try to log in the Hub if there may be a VG connection. */
880 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
881 hp100_login_to_vg_hub(dev, 0); /* relogin */
882
883}
1da177e4 884
6aa20a22
JG		 885
886/*
1da177e4 887 * mmuinit - Reinitialise Cascade MMU and MAC settings.
6aa20a22 888 * Note: Must already be in reset and leaves card in reset.
1da177e4
LT		 889 */
890static void hp100_mmuinit(struct net_device *dev)
891{
892 int ioaddr = dev->base_addr;
893 struct hp100_private *lp = netdev_priv(dev);
894 int i;
895
896#ifdef HP100_DEBUG_B
897 hp100_outw(0x4203, TRACE);
898 printk("hp100: %s: mmuinit\n", dev->name);
899#endif
900
901#ifdef HP100_DEBUG
902 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
903 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
904 return;
905 }
906#endif
907
908 /* Make sure IRQs are masked off and ack'ed. */
909 hp100_page(PERFORMANCE);
910 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
911 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
912
913 /*
6aa20a22 914 * Enable Hardware
1da177e4
LT		 915 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
916 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
917 * - Clear Priority, Advance Pkt and Xmit Cmd
918 */
919
920 hp100_outw(HP100_DEBUG_EN |
921 HP100_RX_HDR |
922 HP100_EE_EN | HP100_RESET_HB |
923 HP100_IO_EN |
924 HP100_FAKE_INT |
925 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
926
927 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
928
929 if (lp->mode == 1) { /* busmaster */
930 hp100_outw(HP100_BM_WRITE |
931 HP100_BM_READ |
932 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
933 } else if (lp->mode == 2) { /* memory mapped */
934 hp100_outw(HP100_BM_WRITE |
935 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
936 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
937 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
938 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
939 } else if (lp->mode == 3) { /* i/o mapped mode */
940 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
941 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
942 }
943
944 hp100_page(HW_MAP);
945 hp100_outb(0, EARLYRXCFG);
946 hp100_outw(0, EARLYTXCFG);
947
948 /*
949 * Enable Bus Master mode
950 */
951 if (lp->mode == 1) { /* busmaster */
952 /* Experimental: Set some PCI configuration bits */
953 hp100_page(HW_MAP);
954 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
955 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
956
957 /* PCI Bus failures should result in a Misc. Interrupt */
958 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
959
960 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
961 hp100_page(HW_MAP);
962 /* Use Burst Mode and switch on PAGE_CK */
963 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
964 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
965 hp100_orb(HP100_BM_PAGE_CK, BM);
966 hp100_orb(HP100_BM_MASTER, BM);
967 } else { /* not busmaster */
968
969 hp100_page(HW_MAP);
970 hp100_andb(~HP100_BM_MASTER, BM);
971 }
972
973 /*
974 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
975 */
976 hp100_page(MMU_CFG);
977 if (lp->mode == 1) { /* only needed for Busmaster */
978 int xmit_stop, recv_stop;
979
980 if ((lp->chip == HP100_CHIPID_RAINIER)
981 || (lp->chip == HP100_CHIPID_SHASTA)) {
982 int pdl_stop;
983
984 /*
985 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
986 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
987 * to the next higher 1k boundary) bytes for the rx-pdl's
988 * Note: For non-etr chips the transmit stop register must be
6aa20a22 989 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
1da177e4
LT		 990 */
991 pdl_stop = lp->memory_size;
992 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
993 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
994 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
995#ifdef HP100_DEBUG_BM
996 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
997#endif
998 } else {
999 /* ETR chip (Lassen) in busmaster mode */
1000 xmit_stop = (lp->memory_size) - 1;
1001 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1002 }
1003
1004 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1005 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1006#ifdef HP100_DEBUG_BM
1007 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1008 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1009#endif
1010 } else {
1011 /* Slave modes (memory mapped and programmed io) */
1012 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1013 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1014#ifdef HP100_DEBUG
1015 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1016 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1017#endif
1018 }
1019
1020 /* Write MAC address into page 1 */
1021 hp100_page(MAC_ADDRESS);
1022 for (i = 0; i < 6; i++)
1023 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1024
1025 /* Zero the multicast hash registers */
1026 for (i = 0; i < 8; i++)
1027 hp100_outb(0x0, HASH_BYTE0 + i);
1028
1029 /* Set up MAC defaults */
1030 hp100_page(MAC_CTRL);
1031
1032 /* Go to LAN Page and zero all filter bits */
1033 /* Zero accept error, accept multicast, accept broadcast and accept */
1034 /* all directed packet bits */
1035 hp100_andb(~(HP100_RX_EN |
1036 HP100_TX_EN |
1037 HP100_ACC_ERRORED |
1038 HP100_ACC_MC |
1039 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1040
1041 hp100_outb(0x00, MAC_CFG_2);
1042
1043 /* Zero the frame format bit. This works around a training bug in the */
1044 /* new hubs. */
1045 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1046
1047 if (lp->priority_tx)
1048 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1049 else
1050 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1051
1052 hp100_outb(HP100_ADV_NXT_PKT |
1053 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1054
1055 /* If busmaster, initialize the PDLs */
1056 if (lp->mode == 1)
1057 hp100_init_pdls(dev);
1058
1059 /* Go to performance page and initalize isr and imr registers */
1060 hp100_page(PERFORMANCE);
1061 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1062 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1063}
1064
1065/*
1066 * open/close functions
1067 */
1068
1069static int hp100_open(struct net_device *dev)
1070{
1071 struct hp100_private *lp = netdev_priv(dev);
1072#ifdef HP100_DEBUG_B
1073 int ioaddr = dev->base_addr;
1074#endif
1075
1076#ifdef HP100_DEBUG_B
1077 hp100_outw(0x4204, TRACE);
1078 printk("hp100: %s: open\n", dev->name);
1079#endif
1080
1081 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1082 if (request_irq(dev->irq, hp100_interrupt,
1083 lp->bus == HP100_BUS_PCI || lp->bus ==
1fb9df5d 1084 HP100_BUS_EISA ? IRQF_SHARED : IRQF_DISABLED,
1da177e4
LT		 1085 "hp100", dev)) {
1086 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1087 return -EAGAIN;
1088 }
1089
1090 dev->trans_start = jiffies;
1091 netif_start_queue(dev);
1092
1093 lp->lan_type = hp100_sense_lan(dev);
1094 lp->mac1_mode = HP100_MAC1MODE3;
1095 lp->mac2_mode = HP100_MAC2MODE3;
1096 memset(&lp->hash_bytes, 0x00, 8);
1097
1098 hp100_stop_interface(dev);
1099
1100 hp100_hwinit(dev);
1101
1102 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1103
1104 return 0;
1105}
1106
1107/* The close function is called when the interface is to be brought down */
1108static int hp100_close(struct net_device *dev)
1109{
1110 int ioaddr = dev->base_addr;
1111 struct hp100_private *lp = netdev_priv(dev);
1112
1113#ifdef HP100_DEBUG_B
1114 hp100_outw(0x4205, TRACE);
1115 printk("hp100: %s: close\n", dev->name);
1116#endif
1117
1118 hp100_page(PERFORMANCE);
1119 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1120
1121 hp100_stop_interface(dev);
1122
1123 if (lp->lan_type == HP100_LAN_100)
1124 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1125
1126 netif_stop_queue(dev);
1127
1128 free_irq(dev->irq, dev);
1129
1130#ifdef HP100_DEBUG
1131 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1132 hp100_inw(OPTION_LSW));
1133#endif
1134
1135 return 0;
1136}
6aa20a22 1137
1da177e4
LT		 1138
1139/*
6aa20a22 1140 * Configure the PDL Rx rings and LAN
1da177e4
LT		 1141 */
1142static void hp100_init_pdls(struct net_device *dev)
1143{
1144 struct hp100_private *lp = netdev_priv(dev);
1145 hp100_ring_t *ringptr;
1146 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1147 int i;
1148
1149#ifdef HP100_DEBUG_B
1150 int ioaddr = dev->base_addr;
1151#endif
1152
1153#ifdef HP100_DEBUG_B
1154 hp100_outw(0x4206, TRACE);
1155 printk("hp100: %s: init pdls\n", dev->name);
1156#endif
1157
1158 if (0 == lp->page_vaddr_algn)
1159 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1160 else {
1161 /* pageptr shall point into the DMA accessible memory region */
1162 /* we use this pointer to status the upper limit of allocated */
1163 /* memory in the allocated page. */
1164 /* note: align the pointers to the pci cache line size */
1165 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1166 pageptr = lp->page_vaddr_algn;
1167
1168 lp->rxrcommit = 0;
1169 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1170
1171 /* Initialise Rx Ring */
1172 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1173 lp->rxring[i].next = ringptr;
1174 ringptr = &(lp->rxring[i]);
1175 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1176 }
1177
1178 /* Initialise Tx Ring */
1179 lp->txrcommit = 0;
1180 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1181 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1182 lp->txring[i].next = ringptr;
1183 ringptr = &(lp->txring[i]);
1184 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1185 }
1186 }
1187}
6aa20a22 1188
1da177e4
LT		 1189
1190/* These functions "format" the entries in the pdl structure */
1191/* They return how much memory the fragments need. */
1192static int hp100_init_rxpdl(struct net_device *dev,
1193 register hp100_ring_t * ringptr,
1194 register u32 * pdlptr)
1195{
1196 /* pdlptr is starting address for this pdl */
1197
1198 if (0 != (((unsigned long) pdlptr) & 0xf))
1199 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1200 dev->name, (unsigned long) pdlptr);
1201
1202 ringptr->pdl = pdlptr + 1;
1203 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1204 ringptr->skb = (void *) NULL;
1205
6aa20a22 1206 /*
1da177e4
LT		 1207 * Write address and length of first PDL Fragment (which is used for
1208 * storing the RX-Header
6aa20a22 1209 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1da177e4
LT		 1210 * store this information. (PDH is at offset 0x04)
1211 */
1212 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1213
1214 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1215 *(pdlptr + 3) = 4; /* Length Frag 1 */
1216
1217 return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
1218}
1219
1220
1221static int hp100_init_txpdl(struct net_device *dev,
1222 register hp100_ring_t * ringptr,
1223 register u32 * pdlptr)
1224{
1225 if (0 != (((unsigned long) pdlptr) & 0xf))
1226 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1227
1228 ringptr->pdl = pdlptr; /* +1; */
1229 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1230 ringptr->skb = (void *) NULL;
1231
1232 return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
1233}
1234
1235/*
6aa20a22 1236 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1da177e4 1237 * for possible odd word alignment rounding up to next dword and set PDL
6aa20a22 1238 * address for fragment#2
1da177e4
LT		 1239 * Returns: 0 if unable to allocate skb_buff
1240 * 1 if successful
1241 */
1242static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1243 struct net_device *dev)
1244{
1245#ifdef HP100_DEBUG_B
1246 int ioaddr = dev->base_addr;
1247#endif
1248#ifdef HP100_DEBUG_BM
1249 u_int *p;
1250#endif
1251
1252#ifdef HP100_DEBUG_B
1253 hp100_outw(0x4207, TRACE);
1254 printk("hp100: %s: build rx pdl\n", dev->name);
1255#endif
1256
1257 /* Allocate skb buffer of maximum size */
6aa20a22 1258 /* Note: This depends on the alloc_skb functions allocating more
1da177e4
LT		 1259 * space than requested, i.e. aligning to 16bytes */
1260
1261 ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
1262
1263 if (NULL != ringptr->skb) {
6aa20a22 1264 /*
1da177e4
LT		 1265 * Reserve 2 bytes at the head of the buffer to land the IP header
1266 * on a long word boundary (According to the Network Driver section
1267 * in the Linux KHG, this should help to increase performance.)
1268 */
1269 skb_reserve(ringptr->skb, 2);
1270
1271 ringptr->skb->dev = dev;
1272 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1273
1274 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1275 /* Note: 1st Fragment is used for the 4 byte packet status
6aa20a22 1276 * (receive header). Its PDL entries are set up by init_rxpdl. So
1da177e4 1277 * here we only have to set up the PDL fragment entries for the data
6aa20a22
JG		 1278 * part. Those 4 bytes will be stored in the DMA memory region
1279 * directly before the PDL.
1da177e4
LT		 1280 */
1281#ifdef HP100_DEBUG_BM
1282 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1283 dev->name, (u_int) ringptr->pdl,
1284 ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
1285 (unsigned int) ringptr->skb->data);
1286#endif
1287
1288 /* Conversion to new PCI API : map skbuf data to PCI bus.
1289 * Doc says it's OK for EISA as well - Jean II */
1290 ringptr->pdl[0] = 0x00020000; /* Write PDH */
6aa20a22 1291 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1da177e4
LT		 1292 ringptr->skb->data);
1293 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1294
1295#ifdef HP100_DEBUG_BM
1296 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1297 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1298#endif
1299 return (1);
1300 }
1301 /* else: */
1302 /* alloc_skb failed (no memory) -> still can receive the header
1303 * fragment into PDL memory. make PDL safe by clearing msgptr and
1304 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1305 */
1306#ifdef HP100_DEBUG_BM
1307 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1308#endif
1309
1310 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1311
1312 return (0);
1313}
1314
1315/*
1316 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1317 *
1318 * Makes assumption that skb's are always contiguous memory areas and
1319 * therefore PDLs contain only 2 physical fragments.
1320 * - While the number of Rx PDLs with buffers is less than maximum
1321 * a. Get a maximum packet size skb
1322 * b. Put the physical address of the buffer into the PDL.
1323 * c. Output physical address of PDL to adapter.
1324 */
1325static void hp100_rxfill(struct net_device *dev)
1326{
1327 int ioaddr = dev->base_addr;
1328
1329 struct hp100_private *lp = netdev_priv(dev);
1330 hp100_ring_t *ringptr;
1331
1332#ifdef HP100_DEBUG_B
1333 hp100_outw(0x4208, TRACE);
1334 printk("hp100: %s: rxfill\n", dev->name);
1335#endif
1336
1337 hp100_page(PERFORMANCE);
1338
1339 while (lp->rxrcommit < MAX_RX_PDL) {
1340 /*
1341 ** Attempt to get a buffer and build a Rx PDL.
1342 */
1343 ringptr = lp->rxrtail;
1344 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1345 return; /* None available, return */
1346 }
1347
1348 /* Hand this PDL over to the card */
1349 /* Note: This needs performance page selected! */
1350#ifdef HP100_DEBUG_BM
1351 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1352 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1353 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1354#endif
1355
1356 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1357
1358 lp->rxrcommit += 1;
1359 lp->rxrtail = ringptr->next;
1360 }
1361}
1362
1363/*
1364 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1365 */
1366
1367static void hp100_BM_shutdown(struct net_device *dev)
1368{
1369 int ioaddr = dev->base_addr;
1370 struct hp100_private *lp = netdev_priv(dev);
1371 unsigned long time;
1372
1373#ifdef HP100_DEBUG_B
1374 hp100_outw(0x4209, TRACE);
1375 printk("hp100: %s: bm shutdown\n", dev->name);
1376#endif
1377
1378 hp100_page(PERFORMANCE);
1379 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1380 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1381
1382 /* Ensure Interrupts are off */
1383 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1384
1385 /* Disable all MAC activity */
1386 hp100_page(MAC_CTRL);
1387 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1388
1389 /* If cascade MMU is not already in reset */
1390 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1391 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1392 * MMU pointers will not be reset out from underneath
1393 */
1394 hp100_page(MAC_CTRL);
1395 for (time = 0; time < 5000; time++) {
1396 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1397 break;
1398 }
1399
1400 /* Shutdown algorithm depends on the generation of Cascade */
1401 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1402 /* Disable Busmaster mode and wait for bit to go to zero. */
1403 hp100_page(HW_MAP);
1404 hp100_andb(~HP100_BM_MASTER, BM);
1405 /* 100 ms timeout */
1406 for (time = 0; time < 32000; time++) {
1407 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1408 break;
1409 }
1410 } else { /* Shasta or Rainier Shutdown/Reset */
1411 /* To ensure all bus master inloading activity has ceased,
6aa20a22 1412 * wait for no Rx PDAs or no Rx packets on card.
1da177e4
LT		 1413 */
1414 hp100_page(PERFORMANCE);
1415 /* 100 ms timeout */
1416 for (time = 0; time < 10000; time++) {
1417 /* RX_PDL: PDLs not executed. */
1418 /* RX_PKT_CNT: RX'd packets on card. */
1419 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1420 break;
1421 }
1422
1423 if (time >= 10000)
1424 printk("hp100: %s: BM shutdown error.\n", dev->name);
1425
1426 /* To ensure all bus master outloading activity has ceased,
1427 * wait until the Tx PDA count goes to zero or no more Tx space
6aa20a22 1428 * available in the Tx region of the card.
1da177e4
LT		 1429 */
1430 /* 100 ms timeout */
1431 for (time = 0; time < 10000; time++) {
1432 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1433 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1434 break;
1435 }
1436
1437 /* Disable Busmaster mode */
1438 hp100_page(HW_MAP);
1439 hp100_andb(~HP100_BM_MASTER, BM);
1440 } /* end of shutdown procedure for non-etr parts */
1441
1442 hp100_cascade_reset(dev, 1);
1443 }
1444 hp100_page(PERFORMANCE);
1445 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1446 /* Busmaster mode should be shut down now. */
1447}
1448
1449static int hp100_check_lan(struct net_device *dev)
1450{
1451 struct hp100_private *lp = netdev_priv(dev);
1452
1453 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1454 hp100_stop_interface(dev);
1455 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1456 printk("hp100: %s: no connection found - check wire\n", dev->name);
1457 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1458 return -EIO;
1459 }
1460 if (lp->lan_type == HP100_LAN_100)
1461 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1462 hp100_start_interface(dev);
1463 }
1464 return 0;
1465}
1466
6aa20a22 1467/*
1da177e4
LT		 1468 * transmit functions
1469 */
1470
1471/* tx function for busmaster mode */
1472static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1473{
1474 unsigned long flags;
1475 int i, ok_flag;
1476 int ioaddr = dev->base_addr;
1477 struct hp100_private *lp = netdev_priv(dev);
1478 hp100_ring_t *ringptr;
1479
1480#ifdef HP100_DEBUG_B
1481 hp100_outw(0x4210, TRACE);
1482 printk("hp100: %s: start_xmit_bm\n", dev->name);
1483#endif
1484
1485 if (skb == NULL) {
1486 return 0;
1487 }
1488
1489 if (skb->len <= 0)
1490 return 0;
6aa20a22 1491
5b057c6b
HX		 1492 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1493 return 0;
1da177e4
LT		 1494
1495 /* Get Tx ring tail pointer */
1496 if (lp->txrtail->next == lp->txrhead) {
1497 /* No memory. */
1498#ifdef HP100_DEBUG
1499 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1500#endif
1501 /* not waited long enough since last tx? */
ff5688ae 1502 if (time_before(jiffies, dev->trans_start + HZ))
1da177e4
LT		 1503 return -EAGAIN;
1504
1505 if (hp100_check_lan(dev))
1506 return -EIO;
1507
1508 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1509 /* we have a 100Mb/s adapter but it isn't connected to hub */
1510 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1511 hp100_stop_interface(dev);
1512 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1513 hp100_start_interface(dev);
1514 } else {
1515 spin_lock_irqsave(&lp->lock, flags);
1516 hp100_ints_off(); /* Useful ? Jean II */
1517 i = hp100_sense_lan(dev);
1518 hp100_ints_on();
1519 spin_unlock_irqrestore(&lp->lock, flags);
1520 if (i == HP100_LAN_ERR)
1521 printk("hp100: %s: link down detected\n", dev->name);
1522 else if (lp->lan_type != i) { /* cable change! */
1523 /* it's very hard - all network settings must be changed!!! */
1524 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1525 lp->lan_type = i;
1526 hp100_stop_interface(dev);
1527 if (lp->lan_type == HP100_LAN_100)
1528 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1529 hp100_start_interface(dev);
1530 } else {
1531 printk("hp100: %s: interface reset\n", dev->name);
1532 hp100_stop_interface(dev);
1533 if (lp->lan_type == HP100_LAN_100)
1534 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1535 hp100_start_interface(dev);
1536 }
1537 }
1538
1539 dev->trans_start = jiffies;
1540 return -EAGAIN;
1541 }
1542
1543 /*
1544 * we have to turn int's off before modifying this, otherwise
1545 * a tx_pdl_cleanup could occur at the same time
1546 */
1547 spin_lock_irqsave(&lp->lock, flags);
1548 ringptr = lp->txrtail;
1549 lp->txrtail = ringptr->next;
1550
1551 /* Check whether packet has minimal packet size */
1552 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1553 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1554
1555 ringptr->skb = skb;
1556 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1557 if (lp->chip == HP100_CHIPID_SHASTA) {
1558 /* TODO:Could someone who has the EISA card please check if this works? */
1559 ringptr->pdl[2] = i;
1560 } else { /* Lassen */
1561 /* In the PDL, don't use the padded size but the real packet size: */
1562 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1563 }
1564 /* Conversion to new PCI API : map skbuf data to PCI bus.
1565 * Doc says it's OK for EISA as well - Jean II */
1566 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1567
1568 /* Hand this PDL to the card. */
1569 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1570
1571 lp->txrcommit++;
1572 spin_unlock_irqrestore(&lp->lock, flags);
1573
1574 /* Update statistics */
1575 lp->stats.tx_packets++;
1576 lp->stats.tx_bytes += skb->len;
1577 dev->trans_start = jiffies;
1578
1579 return 0;
1580}
6aa20a22 1581
1da177e4
LT		 1582
1583/* clean_txring checks if packets have been sent by the card by reading
1584 * the TX_PDL register from the performance page and comparing it to the
1585 * number of commited packets. It then frees the skb's of the packets that
1586 * obviously have been sent to the network.
1587 *
6aa20a22 1588 * Needs the PERFORMANCE page selected.
1da177e4
LT		 1589 */
1590static void hp100_clean_txring(struct net_device *dev)
1591{
1592 struct hp100_private *lp = netdev_priv(dev);
1593 int ioaddr = dev->base_addr;
1594 int donecount;
1595
1596#ifdef HP100_DEBUG_B
1597 hp100_outw(0x4211, TRACE);
1598 printk("hp100: %s: clean txring\n", dev->name);
1599#endif
1600
1601 /* How many PDLs have been transmitted? */
1602 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1603
1604#ifdef HP100_DEBUG
1605 if (donecount > MAX_TX_PDL)
1606 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1607#endif
1608
1609 for (; 0 != donecount; donecount--) {
1610#ifdef HP100_DEBUG_BM
1611 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1612 dev->name, (u_int) lp->txrhead->skb->data,
1613 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1614#endif
1615 /* Conversion to new PCI API : NOP */
1616 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1617 dev_kfree_skb_any(lp->txrhead->skb);
1618 lp->txrhead->skb = (void *) NULL;
1619 lp->txrhead = lp->txrhead->next;
1620 lp->txrcommit--;
1621 }
1622}
1623
1624/* tx function for slave modes */
1625static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1626{
1627 unsigned long flags;
1628 int i, ok_flag;
1629 int ioaddr = dev->base_addr;
1630 u_short val;
1631 struct hp100_private *lp = netdev_priv(dev);
1632
1633#ifdef HP100_DEBUG_B
1634 hp100_outw(0x4212, TRACE);
1635 printk("hp100: %s: start_xmit\n", dev->name);
1636#endif
1637
1638 if (skb == NULL) {
1639 return 0;
1640 }
1641
1642 if (skb->len <= 0)
1643 return 0;
1644
1645 if (hp100_check_lan(dev))
1646 return -EIO;
1647
1648 /* If there is not enough free memory on the card... */
1649 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1650 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1651#ifdef HP100_DEBUG
1652 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1653#endif
1654 /* not waited long enough since last failed tx try? */
ff5688ae 1655 if (time_before(jiffies, dev->trans_start + HZ)) {
1da177e4
LT		 1656#ifdef HP100_DEBUG
1657 printk("hp100: %s: trans_start timing problem\n",
1658 dev->name);
1659#endif
1660 return -EAGAIN;
1661 }
1662 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1663 /* we have a 100Mb/s adapter but it isn't connected to hub */
1664 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1665 hp100_stop_interface(dev);
1666 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1667 hp100_start_interface(dev);
1668 } else {
1669 spin_lock_irqsave(&lp->lock, flags);
1670 hp100_ints_off(); /* Useful ? Jean II */
1671 i = hp100_sense_lan(dev);
1672 hp100_ints_on();
1673 spin_unlock_irqrestore(&lp->lock, flags);
1674 if (i == HP100_LAN_ERR)
1675 printk("hp100: %s: link down detected\n", dev->name);
1676 else if (lp->lan_type != i) { /* cable change! */
1677 /* it's very hard - all network setting must be changed!!! */
1678 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1679 lp->lan_type = i;
1680 hp100_stop_interface(dev);
1681 if (lp->lan_type == HP100_LAN_100)
1682 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1683 hp100_start_interface(dev);
1684 } else {
1685 printk("hp100: %s: interface reset\n", dev->name);
1686 hp100_stop_interface(dev);
1687 if (lp->lan_type == HP100_LAN_100)
1688 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1689 hp100_start_interface(dev);
1690 mdelay(1);
1691 }
1692 }
1693 dev->trans_start = jiffies;
1694 return -EAGAIN;
1695 }
1696
1697 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1698#ifdef HP100_DEBUG_TX
1699 printk("hp100: %s: start_xmit: busy\n", dev->name);
1700#endif
1701 }
1702
1703 spin_lock_irqsave(&lp->lock, flags);
1704 hp100_ints_off();
1705 val = hp100_inw(IRQ_STATUS);
1706 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1707 * when the current packet being transmitted on the wire is completed. */
1708 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1709#ifdef HP100_DEBUG_TX
1710 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1711 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1712#endif
1713
1714 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1715 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1716
1717 hp100_outw(i, DATA32); /* tell card the total packet length */
1718 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1719
1720 if (lp->mode == 2) { /* memory mapped */
450d86df
AV		 1721 /* Note: The J2585B needs alignment to 32bits here! */
1722 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1723 if (!ok_flag)
1724 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1da177e4
LT		 1725 } else { /* programmed i/o */
1726 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1727 (skb->len + 3) >> 2);
1728 if (!ok_flag)
1729 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1730 hp100_outl(0, DATA32);
1731 }
1732
1733 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1734
1735 lp->stats.tx_packets++;
1736 lp->stats.tx_bytes += skb->len;
1737 dev->trans_start = jiffies;
1738 hp100_ints_on();
1739 spin_unlock_irqrestore(&lp->lock, flags);
1740
1741 dev_kfree_skb_any(skb);
1742
1743#ifdef HP100_DEBUG_TX
1744 printk("hp100: %s: start_xmit: end\n", dev->name);
1745#endif
1746
1747 return 0;
1748}
6aa20a22 1749
1da177e4
LT		 1750
1751/*
1752 * Receive Function (Non-Busmaster mode)
6aa20a22 1753 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1da177e4
LT		 1754 * packet counter is non-zero.
1755 * For non-busmaster, this function does the whole work of transfering
1756 * the packet to the host memory and then up to higher layers via skb
6aa20a22 1757 * and netif_rx.
1da177e4
LT		 1758 */
1759
1760static void hp100_rx(struct net_device *dev)
1761{
1762 int packets, pkt_len;
1763 int ioaddr = dev->base_addr;
1764 struct hp100_private *lp = netdev_priv(dev);
1765 u_int header;
1766 struct sk_buff *skb;
1767
1768#ifdef DEBUG_B
1769 hp100_outw(0x4213, TRACE);
1770 printk("hp100: %s: rx\n", dev->name);
1771#endif
1772
1773 /* First get indication of received lan packet */
1774 /* RX_PKT_CND indicates the number of packets which have been fully */
1775 /* received onto the card but have not been fully transferred of the card */
1776 packets = hp100_inb(RX_PKT_CNT);
1777#ifdef HP100_DEBUG_RX
1778 if (packets > 1)
1779 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1780#endif
1781
1782 while (packets-- > 0) {
1783 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1784 /* really advanced to the next packet. */
1785 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1786#ifdef HP100_DEBUG_RX
1787 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1788#endif
1789 }
1790
1791 /* First we get the header, which contains information about the */
1792 /* actual length of the received packet. */
1793 if (lp->mode == 2) { /* memory mapped mode */
450d86df 1794 header = readl(lp->mem_ptr_virt);
1da177e4
LT		 1795 } else /* programmed i/o */
1796 header = hp100_inl(DATA32);
1797
1798 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1799
1800#ifdef HP100_DEBUG_RX
1801 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1802 dev->name, header & HP100_PKT_LEN_MASK,
1803 (header >> 16) & 0xfff8, (header >> 16) & 7);
1804#endif
1805
1806 /* Now we allocate the skb and transfer the data into it. */
1807 skb = dev_alloc_skb(pkt_len+2);
1808 if (skb == NULL) { /* Not enough memory->drop packet */
1809#ifdef HP100_DEBUG
1810 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1811 dev->name, pkt_len);
1812#endif
1813 lp->stats.rx_dropped++;
1814 } else { /* skb successfully allocated */
1815
1816 u_char *ptr;
1817
1818 skb_reserve(skb,2);
1819 skb->dev = dev;
1820
1821 /* ptr to start of the sk_buff data area */
1822 skb_put(skb, pkt_len);
1823 ptr = skb->data;
1824
1825 /* Now transfer the data from the card into that area */
450d86df
AV		 1826 if (lp->mode == 2)
1827 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1828 else /* io mapped */
1da177e4
LT		 1829 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1830
1831 skb->protocol = eth_type_trans(skb, dev);
1832
1833#ifdef HP100_DEBUG_RX
1834 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1835 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1836 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1837 ptr[9], ptr[10], ptr[11]);
1838#endif
1839 netif_rx(skb);
1840 dev->last_rx = jiffies;
1841 lp->stats.rx_packets++;
1842 lp->stats.rx_bytes += pkt_len;
1843 }
1844
1845 /* Indicate the card that we have got the packet */
1846 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1847
1848 switch (header & 0x00070000) {
1849 case (HP100_MULTI_ADDR_HASH << 16):
1850 case (HP100_MULTI_ADDR_NO_HASH << 16):
1851 lp->stats.multicast++;
1852 break;
1853 }
1854 } /* end of while(there are packets) loop */
1855#ifdef HP100_DEBUG_RX
1856 printk("hp100_rx: %s: end\n", dev->name);
1857#endif
1858}
1859
6aa20a22 1860/*
1da177e4
LT		 1861 * Receive Function for Busmaster Mode
1862 */
1863static void hp100_rx_bm(struct net_device *dev)
1864{
1865 int ioaddr = dev->base_addr;
1866 struct hp100_private *lp = netdev_priv(dev);
1867 hp100_ring_t *ptr;
1868 u_int header;
1869 int pkt_len;
1870
1871#ifdef HP100_DEBUG_B
1872 hp100_outw(0x4214, TRACE);
1873 printk("hp100: %s: rx_bm\n", dev->name);
1874#endif
1875
1876#ifdef HP100_DEBUG
1877 if (0 == lp->rxrcommit) {
1878 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1879 return;
1880 } else
6aa20a22 1881 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1da177e4
LT		 1882 * the cards BM engine */
1883 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1884 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1885 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1886 lp->rxrcommit);
1887 return;
1888 }
1889#endif
1890
1891 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1892 /*
1893 * The packet was received into the pdl pointed to by lp->rxrhead (
6aa20a22 1894 * the oldest pdl in the ring
1da177e4
LT		 1895 */
1896
1897 /* First we get the header, which contains information about the */
1898 /* actual length of the received packet. */
1899
1900 ptr = lp->rxrhead;
1901
1902 header = *(ptr->pdl - 1);
1903 pkt_len = (header & HP100_PKT_LEN_MASK);
1904
1905 /* Conversion to new PCI API : NOP */
1906 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1907
1908#ifdef HP100_DEBUG_BM
1909 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1910 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1911 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1912 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",
1913 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1914 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1915 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1916#endif
1917
1918 if ((pkt_len >= MIN_ETHER_SIZE) &&
1919 (pkt_len <= MAX_ETHER_SIZE)) {
1920 if (ptr->skb == NULL) {
1921 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1922 /* can happen if we only allocated room for the pdh due to memory shortage. */
1923 lp->stats.rx_dropped++;
1924 } else {
1925 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1926 ptr->skb->protocol =
1927 eth_type_trans(ptr->skb, dev);
1928
1929 netif_rx(ptr->skb); /* Up and away... */
1930
1931 dev->last_rx = jiffies;
1932 lp->stats.rx_packets++;
1933 lp->stats.rx_bytes += pkt_len;
1934 }
1935
1936 switch (header & 0x00070000) {
1937 case (HP100_MULTI_ADDR_HASH << 16):
1938 case (HP100_MULTI_ADDR_NO_HASH << 16):
1939 lp->stats.multicast++;
1940 break;
1941 }
1942 } else {
1943#ifdef HP100_DEBUG
1944 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1945#endif
1946 if (ptr->skb != NULL)
1947 dev_kfree_skb_any(ptr->skb);
1948 lp->stats.rx_errors++;
1949 }
1950
1951 lp->rxrhead = lp->rxrhead->next;
1952
1953 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1954 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1955 /* No space for skb, header can still be received. */
1956#ifdef HP100_DEBUG
1957 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1958#endif
1959 return;
1960 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1961 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1962 lp->rxrtail = lp->rxrtail->next;
1963 }
1964
1965 }
1966}
1967
1968/*
1969 * statistics
1970 */
1971static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1972{
1973 unsigned long flags;
1974 int ioaddr = dev->base_addr;
1975 struct hp100_private *lp = netdev_priv(dev);
1976
1977#ifdef HP100_DEBUG_B
1978 hp100_outw(0x4215, TRACE);
1979#endif
1980
1981 spin_lock_irqsave(&lp->lock, flags);
1982 hp100_ints_off(); /* Useful ? Jean II */
1983 hp100_update_stats(dev);
1984 hp100_ints_on();
1985 spin_unlock_irqrestore(&lp->lock, flags);
1986 return &(lp->stats);
1987}
1988
1989static void hp100_update_stats(struct net_device *dev)
1990{
1991 int ioaddr = dev->base_addr;
1992 u_short val;
1993 struct hp100_private *lp = netdev_priv(dev);
1994
1995#ifdef HP100_DEBUG_B
1996 hp100_outw(0x4216, TRACE);
1997 printk("hp100: %s: update-stats\n", dev->name);
1998#endif
1999
2000 /* Note: Statistics counters clear when read. */
2001 hp100_page(MAC_CTRL);
2002 val = hp100_inw(DROPPED) & 0x0fff;
2003 lp->stats.rx_errors += val;
2004 lp->stats.rx_over_errors += val;
2005 val = hp100_inb(CRC);
2006 lp->stats.rx_errors += val;
2007 lp->stats.rx_crc_errors += val;
2008 val = hp100_inb(ABORT);
2009 lp->stats.tx_errors += val;
2010 lp->stats.tx_aborted_errors += val;
2011 hp100_page(PERFORMANCE);
2012}
2013
2014static void hp100_misc_interrupt(struct net_device *dev)
2015{
2016#ifdef HP100_DEBUG_B
2017 int ioaddr = dev->base_addr;
2018#endif
2019 struct hp100_private *lp = netdev_priv(dev);
2020
2021#ifdef HP100_DEBUG_B
2022 int ioaddr = dev->base_addr;
2023 hp100_outw(0x4216, TRACE);
2024 printk("hp100: %s: misc_interrupt\n", dev->name);
2025#endif
2026
2027 /* Note: Statistics counters clear when read. */
2028 lp->stats.rx_errors++;
2029 lp->stats.tx_errors++;
2030}
2031
2032static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2033{
2034 unsigned long flags;
2035
2036#ifdef HP100_DEBUG_B
2037 hp100_outw(0x4217, TRACE);
2038 printk("hp100: %s: clear_stats\n", dev->name);
2039#endif
2040
2041 spin_lock_irqsave(&lp->lock, flags);
2042 hp100_page(MAC_CTRL); /* get all statistics bytes */
2043 hp100_inw(DROPPED);
2044 hp100_inb(CRC);
2045 hp100_inb(ABORT);
2046 hp100_page(PERFORMANCE);
2047 spin_unlock_irqrestore(&lp->lock, flags);
2048}
6aa20a22 2049
1da177e4
LT		 2050
2051/*
2052 * multicast setup
2053 */
2054
2055/*
2056 * Set or clear the multicast filter for this adapter.
2057 */
2058
2059static void hp100_set_multicast_list(struct net_device *dev)
2060{
2061 unsigned long flags;
2062 int ioaddr = dev->base_addr;
2063 struct hp100_private *lp = netdev_priv(dev);
2064
2065#ifdef HP100_DEBUG_B
2066 hp100_outw(0x4218, TRACE);
2067 printk("hp100: %s: set_mc_list\n", dev->name);
2068#endif
2069
2070 spin_lock_irqsave(&lp->lock, flags);
2071 hp100_ints_off();
2072 hp100_page(MAC_CTRL);
2073 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2074
2075 if (dev->flags & IFF_PROMISC) {
2076 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2077 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2078 memset(&lp->hash_bytes, 0xff, 8);
2079 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2080 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2081 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2082#ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2083 if (dev->flags & IFF_ALLMULTI) {
2084 /* set hash filter to receive all multicast packets */
2085 memset(&lp->hash_bytes, 0xff, 8);
2086 } else {
2087 int i, j, idx;
2088 u_char *addrs;
2089 struct dev_mc_list *dmi;
2090
2091 memset(&lp->hash_bytes, 0x00, 8);
2092#ifdef HP100_DEBUG
2093 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2094#endif
2095 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2096 addrs = dmi->dmi_addr;
2097 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2098#ifdef HP100_DEBUG
2099 printk("hp100: %s: multicast = %02x:%02x:%02x:%02x:%02x:%02x, ",
2100 dev->name, addrs[0], addrs[1], addrs[2],
2101 addrs[3], addrs[4], addrs[5]);
2102#endif
2103 for (j = idx = 0; j < 6; j++) {
2104 idx ^= *addrs++ & 0x3f;
2105 printk(":%02x:", idx);
2106 }
2107#ifdef HP100_DEBUG
2108 printk("idx = %i\n", idx);
2109#endif
2110 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2111 }
2112 }
2113 }
2114#else
2115 memset(&lp->hash_bytes, 0xff, 8);
2116#endif
2117 } else {
2118 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2119 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2120 memset(&lp->hash_bytes, 0x00, 8);
2121 }
2122
2123 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2124 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2125 int i;
2126
2127 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2128 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2129 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2130
2131 hp100_page(MAC_ADDRESS);
2132 for (i = 0; i < 8; i++)
2133 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2134#ifdef HP100_DEBUG
2135 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2136 dev->name, lp->mac1_mode, lp->mac2_mode,
2137 lp->hash_bytes[0], lp->hash_bytes[1],
2138 lp->hash_bytes[2], lp->hash_bytes[3],
2139 lp->hash_bytes[4], lp->hash_bytes[5],
2140 lp->hash_bytes[6], lp->hash_bytes[7]);
2141#endif
2142
2143 if (lp->lan_type == HP100_LAN_100) {
2144#ifdef HP100_DEBUG
2145 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2146#endif
2147 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2148 }
2149 } else {
2150 int i;
2151 u_char old_hash_bytes[8];
2152
2153 hp100_page(MAC_ADDRESS);
2154 for (i = 0; i < 8; i++)
2155 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2156 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2157 for (i = 0; i < 8; i++)
2158 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2159#ifdef HP100_DEBUG
2160 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2161 dev->name, lp->hash_bytes[0],
2162 lp->hash_bytes[1], lp->hash_bytes[2],
2163 lp->hash_bytes[3], lp->hash_bytes[4],
2164 lp->hash_bytes[5], lp->hash_bytes[6],
2165 lp->hash_bytes[7]);
2166#endif
2167
2168 if (lp->lan_type == HP100_LAN_100) {
2169#ifdef HP100_DEBUG
2170 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2171#endif
2172 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2173 }
2174 }
2175 }
2176
2177 hp100_page(MAC_CTRL);
2178 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2179 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2180
2181 hp100_page(PERFORMANCE);
2182 hp100_ints_on();
2183 spin_unlock_irqrestore(&lp->lock, flags);
2184}
2185
2186/*
2187 * hardware interrupt handling
2188 */
2189
7d12e780 2190static irqreturn_t hp100_interrupt(int irq, void *dev_id)
1da177e4
LT		 2191{
2192 struct net_device *dev = (struct net_device *) dev_id;
2193 struct hp100_private *lp = netdev_priv(dev);
2194
2195 int ioaddr;
2196 u_int val;
2197
2198 if (dev == NULL)
2199 return IRQ_NONE;
2200 ioaddr = dev->base_addr;
2201
2202 spin_lock(&lp->lock);
2203
2204 hp100_ints_off();
2205
2206#ifdef HP100_DEBUG_B
2207 hp100_outw(0x4219, TRACE);
2208#endif
2209
2210 /* hp100_page( PERFORMANCE ); */
2211 val = hp100_inw(IRQ_STATUS);
2212#ifdef HP100_DEBUG_IRQ
2213 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2214 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2215 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2216#endif
2217
2218 if (val == 0) { /* might be a shared interrupt */
2219 spin_unlock(&lp->lock);
2220 hp100_ints_on();
2221 return IRQ_NONE;
2222 }
2223 /* We're only interested in those interrupts we really enabled. */
2224 /* val &= hp100_inw( IRQ_MASK ); */
2225
6aa20a22
JG		 2226 /*
2227 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2228 * is considered executed whenever the RX_PDL data structure is no longer
1da177e4
LT		 2229 * needed.
2230 */
2231 if (val & HP100_RX_PDL_FILL_COMPL) {
2232 if (lp->mode == 1)
2233 hp100_rx_bm(dev);
2234 else {
2235 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2236 }
2237 }
2238
6aa20a22 2239 /*
1da177e4
LT		 2240 * The RX_PACKET interrupt is set, when the receive packet counter is
2241 * non zero. We use this interrupt for receiving in slave mode. In
2242 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2243 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2244 * we somehow have missed a rx_pdl_fill_compl interrupt.
2245 */
2246
2247 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2248 if (lp->mode != 1) /* non busmaster */
2249 hp100_rx(dev);
2250 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2251 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2252 hp100_rx_bm(dev);
2253 }
2254 }
2255
2256 /*
2257 * Ack. that we have noticed the interrupt and thereby allow next one.
2258 * Note that this is now done after the slave rx function, since first
2259 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2260 * on the J2573.
2261 */
2262 hp100_outw(val, IRQ_STATUS);
2263
2264 /*
6aa20a22
JG		 2265 * RX_ERROR is set when a packet is dropped due to no memory resources on
2266 * the card or when a RCV_ERR occurs.
2267 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2268 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
1da177e4
LT		 2269 */
2270 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2271#ifdef HP100_DEBUG_IRQ
2272 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2273#endif
2274 hp100_update_stats(dev);
2275 if (lp->mode == 1) {
2276 hp100_rxfill(dev);
2277 hp100_clean_txring(dev);
2278 }
2279 }
2280
6aa20a22
JG		 2281 /*
2282 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
1da177e4
LT		 2283 */
2284 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2285 hp100_rxfill(dev);
2286
6aa20a22
JG		 2287 /*
2288 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2289 * is completed
1da177e4
LT		 2290 */
2291 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2292 hp100_clean_txring(dev);
2293
6aa20a22 2294 /*
1da177e4
LT		 2295 * MISC_ERROR is set when either the LAN link goes down or a detected
2296 * bus error occurs.
2297 */
2298 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2299#ifdef HP100_DEBUG_IRQ
2300 printk
2301 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2302 dev->name);
2303#endif
2304 if (lp->mode == 1) {
2305 hp100_clean_txring(dev);
2306 hp100_rxfill(dev);
2307 }
2308 hp100_misc_interrupt(dev);
2309 }
2310
2311 spin_unlock(&lp->lock);
2312 hp100_ints_on();
2313 return IRQ_HANDLED;
2314}
2315
2316/*
2317 * some misc functions
2318 */
2319
2320static void hp100_start_interface(struct net_device *dev)
2321{
2322 unsigned long flags;
2323 int ioaddr = dev->base_addr;
2324 struct hp100_private *lp = netdev_priv(dev);
2325
2326#ifdef HP100_DEBUG_B
2327 hp100_outw(0x4220, TRACE);
2328 printk("hp100: %s: hp100_start_interface\n", dev->name);
2329#endif
2330
2331 spin_lock_irqsave(&lp->lock, flags);
2332
2333 /* Ensure the adapter does not want to request an interrupt when */
2334 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2335 hp100_page(PERFORMANCE);
2336 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2337 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2338 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2339 OPTION_LSW);
2340 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2341 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2342
2343 if (lp->mode == 1) {
2344 /* Make sure BM bit is set... */
2345 hp100_page(HW_MAP);
2346 hp100_orb(HP100_BM_MASTER, BM);
2347 hp100_rxfill(dev);
2348 } else if (lp->mode == 2) {
2349 /* Enable memory mapping. Note: Don't do this when busmaster. */
2350 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2351 }
2352
2353 hp100_page(PERFORMANCE);
2354 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2355 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2356
2357 /* enable a few interrupts: */
2358 if (lp->mode == 1) { /* busmaster mode */
2359 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2360 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2361 /* HP100_RX_PACKET | */
2362 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2363 /* HP100_TX_PDA_ZERO | */
2364 HP100_TX_COMPLETE |
2365 /* HP100_MISC_ERROR | */
2366 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2367 } else {
2368 hp100_outw(HP100_RX_PACKET |
2369 HP100_RX_ERROR | HP100_SET_HB |
2370 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2371 }
2372
2373 /* Note : before hp100_set_multicast_list(), because it will play with
2374 * spinlock itself... Jean II */
2375 spin_unlock_irqrestore(&lp->lock, flags);
2376
2377 /* Enable MAC Tx and RX, set MAC modes, ... */
2378 hp100_set_multicast_list(dev);
2379}
2380
2381static void hp100_stop_interface(struct net_device *dev)
2382{
2383 struct hp100_private *lp = netdev_priv(dev);
2384 int ioaddr = dev->base_addr;
2385 u_int val;
2386
2387#ifdef HP100_DEBUG_B
2388 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2389 hp100_outw(0x4221, TRACE);
2390#endif
2391
2392 if (lp->mode == 1)
2393 hp100_BM_shutdown(dev);
2394 else {
2395 /* Note: MMAP_DIS will be reenabled by start_interface */
2396 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2397 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2398 OPTION_LSW);
2399 val = hp100_inw(OPTION_LSW);
2400
2401 hp100_page(MAC_CTRL);
2402 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2403
2404 if (!(val & HP100_HW_RST))
2405 return; /* If reset, imm. return ... */
2406 /* ... else: busy wait until idle */
2407 for (val = 0; val < 6000; val++)
2408 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2409 hp100_page(PERFORMANCE);
2410 return;
2411 }
2412 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2413 hp100_page(PERFORMANCE);
2414 }
2415}
2416
2417static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2418{
2419 int i;
2420 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2421
2422#ifdef HP100_DEBUG_B
2423 hp100_outw(0x4222, TRACE);
2424#endif
2425
2426 hp100_page(EEPROM_CTRL);
2427 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2428 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2429 for (i = 0; i < 10000; i++)
2430 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2431 return;
2432 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2433}
2434
2435/* Sense connection status.
2436 * return values: LAN_10 - Connected to 10Mbit/s network
2437 * LAN_100 - Connected to 100Mbit/s network
2438 * LAN_ERR - not connected or 100Mbit/s Hub down
2439 */
2440static int hp100_sense_lan(struct net_device *dev)
2441{
2442 int ioaddr = dev->base_addr;
2443 u_short val_VG, val_10;
2444 struct hp100_private *lp = netdev_priv(dev);
2445
2446#ifdef HP100_DEBUG_B
2447 hp100_outw(0x4223, TRACE);
2448#endif
2449
2450 hp100_page(MAC_CTRL);
2451 val_10 = hp100_inb(10_LAN_CFG_1);
2452 val_VG = hp100_inb(VG_LAN_CFG_1);
2453 hp100_page(PERFORMANCE);
2454#ifdef HP100_DEBUG
2455 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2456 dev->name, val_VG, val_10);
2457#endif
2458
2459 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2460 return HP100_LAN_10;
2461
2462 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2463 /*
2464 * This can be overriden by dos utility, so if this has no effect,
2465 * perhaps you need to download that utility from HP and set card
2466 * back to "auto detect".
2467 */
2468 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2469 hp100_page(MAC_CTRL);
2470 hp100_outb(val_10, 10_LAN_CFG_1);
2471 hp100_page(PERFORMANCE);
2472 return HP100_LAN_COAX;
2473 }
2474
2475 /* Those cards don't have a 100 Mbit connector */
2476 if ( !strcmp(lp->id, "HWP1920") ||
6aa20a22
JG		 2477 (lp->pci_dev &&
2478 lp->pci_dev->vendor == PCI_VENDOR_ID &&
1da177e4
LT		 2479 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2480 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2481 return HP100_LAN_ERR;
6aa20a22 2482
1da177e4
LT		 2483 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2484 return HP100_LAN_100;
2485 return HP100_LAN_ERR;
2486}
2487
2488static int hp100_down_vg_link(struct net_device *dev)
2489{
2490 struct hp100_private *lp = netdev_priv(dev);
2491 int ioaddr = dev->base_addr;
2492 unsigned long time;
2493 long savelan, newlan;
2494
2495#ifdef HP100_DEBUG_B
2496 hp100_outw(0x4224, TRACE);
2497 printk("hp100: %s: down_vg_link\n", dev->name);
2498#endif
2499
2500 hp100_page(MAC_CTRL);
2501 time = jiffies + (HZ / 4);
2502 do {
2503 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2504 break;
3173c890
NA		 2505 if (!in_interrupt())
2506 schedule_timeout_interruptible(1);
1da177e4
LT		 2507 } while (time_after(time, jiffies));
2508
2509 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2510 return 0;
2511
2512 /* Drop the VG Link by clearing the link up cmd and load addr. */
2513
2514 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2515 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2516
2517 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2518 time = jiffies + (HZ / 2);
2519 do {
2520 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2521 break;
3173c890
NA		 2522 if (!in_interrupt())
2523 schedule_timeout_interruptible(1);
1da177e4
LT		 2524 } while (time_after(time, jiffies));
2525
2526#ifdef HP100_DEBUG
2527 if (time_after_eq(jiffies, time))
2528 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2529#endif
2530
2531 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2532 /* logout under traffic (even though all the status bits are cleared), */
2533 /* do this workaround to get the Rev 1 MAC in its idle state */
2534 if (lp->chip == HP100_CHIPID_LASSEN) {
2535 /* Reset VG MAC to insure it leaves the logoff state even if */
2536 /* the Hub is still emitting tones */
2537 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2538 udelay(1500); /* wait for >1ms */
2539 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2540 udelay(1500);
2541 }
2542
2543 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2544 /* to get the VG mac to full reset. This is not req.d with later chips */
2545 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2546 /* selected again! This will be left to the connect hub function to */
2547 /* perform if desired. */
2548 if (lp->chip == HP100_CHIPID_LASSEN) {
2549 /* Have to write to 10 and 100VG control registers simultaneously */
2550 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2551 newlan &= ~(HP100_VG_SEL << 16);
2552 newlan |= (HP100_DOT3_MAC) << 8;
2553 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2554 hp100_outl(newlan, 10_LAN_CFG_1);
2555
2556 /* Conditionally stall for 5sec on VG selected. */
2557 time = jiffies + (HZ * 5);
2558 do {
2559 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2560 break;
3173c890
NA		 2561 if (!in_interrupt())
2562 schedule_timeout_interruptible(1);
1da177e4
LT		 2563 } while (time_after(time, jiffies));
2564
2565 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2566 hp100_outl(savelan, 10_LAN_CFG_1);
2567 }
2568
2569 time = jiffies + (3 * HZ); /* Timeout 3s */
2570 do {
2571 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2572 break;
3173c890
NA		 2573 if (!in_interrupt())
2574 schedule_timeout_interruptible(1);
1da177e4
LT		 2575 } while (time_after(time, jiffies));
2576
2577 if (time_before_eq(time, jiffies)) {
2578#ifdef HP100_DEBUG
2579 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2580#endif
2581 return -EIO;
2582 }
2583
2584 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2585 do {
3173c890
NA		 2586 if (!in_interrupt())
2587 schedule_timeout_interruptible(1);
1da177e4
LT		 2588 } while (time_after(time, jiffies));
2589
2590 return 0;
2591}
2592
2593static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2594{
2595 int ioaddr = dev->base_addr;
2596 struct hp100_private *lp = netdev_priv(dev);
2597 u_short val = 0;
2598 unsigned long time;
2599 int startst;
2600
2601#ifdef HP100_DEBUG_B
2602 hp100_outw(0x4225, TRACE);
2603 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2604#endif
2605
2606 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2607 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2608 * promiscuous mode change)
2609 */
2610 hp100_page(MAC_CTRL);
2611 startst = hp100_inb(VG_LAN_CFG_1);
2612 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2613#ifdef HP100_DEBUG_TRAINING
2614 printk("hp100: %s: Start training\n", dev->name);
2615#endif
2616
2617 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2618 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2619
2620 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2621 /* entry then temporarily put them into force 100Mbit mode */
2622 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2623 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2624
2625 /* Drop the VG link by zeroing Link Up Command and Load Address */
2626 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2627
2628#ifdef HP100_DEBUG_TRAINING
2629 printk("hp100: %s: Bring down the link\n", dev->name);
2630#endif
2631
2632 /* Wait for link to drop */
2633 time = jiffies + (HZ / 10);
2634 do {
2635 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2636 break;
3173c890
NA		 2637 if (!in_interrupt())
2638 schedule_timeout_interruptible(1);
1da177e4
LT		 2639 } while (time_after(time, jiffies));
2640
2641 /* Start an addressed training and optionally request promiscuous port */
2642 if ((dev->flags) & IFF_PROMISC) {
2643 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2644 if (lp->chip == HP100_CHIPID_LASSEN)
2645 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2646 } else {
2647 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2648 /* For ETR parts we need to reset the prom. bit in the training
2649 * register, otherwise promiscious mode won't be disabled.
2650 */
2651 if (lp->chip == HP100_CHIPID_LASSEN) {
2652 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2653 }
2654 }
2655
2656 /* With ETR parts, frame format request bits can be set. */
2657 if (lp->chip == HP100_CHIPID_LASSEN)
2658 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2659
2660 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2661
2662 /* Note: Next wait could be omitted for Hood and earlier chips under */
2663 /* certain circumstances */
2664 /* TODO: check if hood/earlier and skip wait. */
2665
2666 /* Wait for either short timeout for VG tones or long for login */
2667 /* Wait for the card hardware to signalise link cable status ok... */
2668 hp100_page(MAC_CTRL);
2669 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2670 do {
2671 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2672 break;
3173c890
NA		 2673 if (!in_interrupt())
2674 schedule_timeout_interruptible(1);
1da177e4
LT		 2675 } while (time_before(jiffies, time));
2676
2677 if (time_after_eq(jiffies, time)) {
2678#ifdef HP100_DEBUG_TRAINING
2679 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2680#endif
2681 } else {
2682#ifdef HP100_DEBUG_TRAINING
2683 printk
2684 ("hp100: %s: HUB tones detected. Trying to train.\n",
2685 dev->name);
2686#endif
2687
2688 time = jiffies + (2 * HZ); /* again a timeout */
2689 do {
2690 val = hp100_inb(VG_LAN_CFG_1);
2691 if ((val & (HP100_LINK_UP_ST))) {
2692#ifdef HP100_DEBUG_TRAINING
2693 printk("hp100: %s: Passed training.\n", dev->name);
2694#endif
2695 break;
2696 }
3173c890
NA		 2697 if (!in_interrupt())
2698 schedule_timeout_interruptible(1);
1da177e4
LT		 2699 } while (time_after(time, jiffies));
2700 }
2701
2702 /* If LINK_UP_ST is set, then we are logged into the hub. */
2703 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2704#ifdef HP100_DEBUG_TRAINING
2705 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2706 if (lp->chip == HP100_CHIPID_LASSEN) {
2707 val = hp100_inw(TRAIN_ALLOW);
2708 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2709 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2710 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2711 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2712 }
2713#endif
2714 } else {
2715 /* If LINK_UP_ST is not set, login was not successful */
2716 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2717 if (lp->chip == HP100_CHIPID_LASSEN) {
2718 /* Check allowed Register to find out why there is a problem. */
2719 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2720#ifdef HP100_DEBUG_TRAINING
2721 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2722#endif
2723 if (val & HP100_MALLOW_ACCDENIED)
2724 printk("hp100: %s: HUB access denied.\n", dev->name);
2725 if (val & HP100_MALLOW_CONFIGURE)
2726 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2727 if (val & HP100_MALLOW_DUPADDR)
2728 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2729 }
2730 }
2731
2732 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2733 /* to auto-select mode */
2734
2735 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2736 hp100_page(MAC_CTRL);
2737 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2738 }
2739
2740 val = hp100_inb(VG_LAN_CFG_1);
2741
2742 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2743 hp100_page(PERFORMANCE);
2744 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2745
2746 if (val & HP100_LINK_UP_ST)
2747 return (0); /* login was ok */
2748 else {
2749 printk("hp100: %s: Training failed.\n", dev->name);
2750 hp100_down_vg_link(dev);
2751 return -EIO;
2752 }
2753 }
2754 /* no forced relogin & already link there->no training. */
2755 return -EIO;
2756}
2757
2758static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2759{
2760 int ioaddr = dev->base_addr;
2761 struct hp100_private *lp = netdev_priv(dev);
2762
2763#ifdef HP100_DEBUG_B
2764 hp100_outw(0x4226, TRACE);
2765 printk("hp100: %s: cascade_reset\n", dev->name);
2766#endif
2767
2768 if (enable) {
2769 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2770 if (lp->chip == HP100_CHIPID_LASSEN) {
2771 /* Lassen requires a PCI transmit fifo reset */
2772 hp100_page(HW_MAP);
2773 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2774 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2775 /* Wait for min. 300 ns */
2776 /* we can't use jiffies here, because it may be */
2777 /* that we have disabled the timer... */
2778 udelay(400);
2779 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2780 hp100_page(PERFORMANCE);
2781 }
2782 } else { /* bring out of reset */
2783 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2784 udelay(400);
2785 hp100_page(PERFORMANCE);
2786 }
2787}
2788
2789#ifdef HP100_DEBUG
2790void hp100_RegisterDump(struct net_device *dev)
2791{
2792 int ioaddr = dev->base_addr;
2793 int Page;
2794 int Register;
2795
2796 /* Dump common registers */
2797 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2798 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2799 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2800 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2801 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2802
2803 /* Dump paged registers */
2804 for (Page = 0; Page < 8; Page++) {
2805 /* Dump registers */
2806 printk("page: 0x%.2x\n", Page);
2807 outw(Page, ioaddr + 0x02);
2808 for (Register = 0x8; Register < 0x22; Register += 2) {
2809 /* Display Register contents except data port */
2810 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2811 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2812 }
2813 }
2814 }
2815 hp100_page(PERFORMANCE);
2816}
2817#endif
2818
2819
2820static void cleanup_dev(struct net_device *d)
2821{
2822 struct hp100_private *p = netdev_priv(d);
2823
2824 unregister_netdev(d);
2825 release_region(d->base_addr, HP100_REGION_SIZE);
2826
2827 if (p->mode == 1) /* busmaster */
6aa20a22
JG		 2828 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2829 p->page_vaddr_algn,
1da177e4
LT		 2830 virt_to_whatever(d, p->page_vaddr_algn));
2831 if (p->mem_ptr_virt)
2832 iounmap(p->mem_ptr_virt);
2833
2834 free_netdev(d);
2835}
2836
2837#ifdef CONFIG_EISA
2838static int __init hp100_eisa_probe (struct device *gendev)
2839{
2840 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2841 struct eisa_device *edev = to_eisa_device(gendev);
2842 int err;
2843
2844 if (!dev)
2845 return -ENOMEM;
2846
2847 SET_MODULE_OWNER(dev);
2848 SET_NETDEV_DEV(dev, &edev->dev);
2849
2850 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2851 if (err)
2852 goto out1;
2853
1da177e4 2854#ifdef HP100_DEBUG
6aa20a22 2855 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
1da177e4
LT		 2856 dev->base_addr);
2857#endif
2858 gendev->driver_data = dev;
2859 return 0;
1da177e4
LT		 2860 out1:
2861 free_netdev(dev);
2862 return err;
2863}
2864
2865static int __devexit hp100_eisa_remove (struct device *gendev)
2866{
2867 struct net_device *dev = gendev->driver_data;
2868 cleanup_dev(dev);
2869 return 0;
2870}
2871
2872static struct eisa_driver hp100_eisa_driver = {
2873 .id_table = hp100_eisa_tbl,
2874 .driver = {
2875 .name = "hp100",
2876 .probe = hp100_eisa_probe,
2877 .remove = __devexit_p (hp100_eisa_remove),
2878 }
2879};
2880#endif
2881
2882#ifdef CONFIG_PCI
2883static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2884 const struct pci_device_id *ent)
2885{
2886 struct net_device *dev;
2887 int ioaddr;
2888 u_short pci_command;
2889 int err;
2890
2891 if (pci_enable_device(pdev))
2892 return -ENODEV;
2893
2894 dev = alloc_etherdev(sizeof(struct hp100_private));
2895 if (!dev) {
2896 err = -ENOMEM;
2897 goto out0;
2898 }
2899
2900 SET_MODULE_OWNER(dev);
2901 SET_NETDEV_DEV(dev, &pdev->dev);
2902
2903 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2904 if (!(pci_command & PCI_COMMAND_IO)) {
2905#ifdef HP100_DEBUG
2906 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2907#endif
2908 pci_command |= PCI_COMMAND_IO;
2909 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2910 }
2911
2912 if (!(pci_command & PCI_COMMAND_MASTER)) {
2913#ifdef HP100_DEBUG
2914 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2915#endif
2916 pci_command |= PCI_COMMAND_MASTER;
2917 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2918 }
6aa20a22 2919
1da177e4
LT		 2920 ioaddr = pci_resource_start(pdev, 0);
2921 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
6aa20a22 2922 if (err)
1da177e4 2923 goto out1;
6aa20a22 2924
1da177e4
LT		 2925#ifdef HP100_DEBUG
2926 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2927#endif
2928 pci_set_drvdata(pdev, dev);
2929 return 0;
1da177e4
LT		 2930 out1:
2931 free_netdev(dev);
2932 out0:
2933 pci_disable_device(pdev);
2934 return err;
2935}
2936
2937static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2938{
2939 struct net_device *dev = pci_get_drvdata(pdev);
2940
2941 cleanup_dev(dev);
2942 pci_disable_device(pdev);
2943}
2944
2945
2946static struct pci_driver hp100_pci_driver = {
2947 .name = "hp100",
2948 .id_table = hp100_pci_tbl,
2949 .probe = hp100_pci_probe,
2950 .remove = __devexit_p(hp100_pci_remove),
2951};
2952#endif
2953
2954/*
2955 * module section
2956 */
2957
2958MODULE_LICENSE("GPL");
2959MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, "
2960 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2961MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2962
2963/*
2964 * Note: to register three isa devices, use:
2965 * option hp100 hp100_port=0,0,0
2966 * to register one card at io 0x280 as eth239, use:
2967 * option hp100 hp100_port=0x280
2968 */
2969#if defined(MODULE) && defined(CONFIG_ISA)
2970#define HP100_DEVICES 5
2971/* Parameters set by insmod */
2972static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2973module_param_array(hp100_port, int, NULL, 0);
2974
2975/* List of devices */
2976static struct net_device *hp100_devlist[HP100_DEVICES];
2977
2978static int __init hp100_isa_init(void)
2979{
2980 struct net_device *dev;
2981 int i, err, cards = 0;
2982
2983 /* Don't autoprobe ISA bus */
2984 if (hp100_port[0] == 0)
2985 return -ENODEV;
2986
2987 /* Loop on all possible base addresses */
2988 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2989 dev = alloc_etherdev(sizeof(struct hp100_private));
2990 if (!dev) {
2991 printk(KERN_WARNING "hp100: no memory for network device\n");
2992 while (cards > 0)
2993 cleanup_dev(hp100_devlist[--cards]);
2994
2995 return -ENOMEM;
2996 }
2997 SET_MODULE_OWNER(dev);
2998
2999 err = hp100_isa_probe(dev, hp100_port[i]);
b1fc5505
HX		 3000 if (!err)
3001 hp100_devlist[cards++] = dev;
3002 else
1da177e4
LT		 3003 free_netdev(dev);
3004 }
3005
3006 return cards > 0 ? 0 : -ENODEV;
3007}
3008
6aa20a22 3009static void __exit hp100_isa_cleanup(void)
1da177e4
LT		 3010{
3011 int i;
3012
3013 for (i = 0; i < HP100_DEVICES; i++) {
3014 struct net_device *dev = hp100_devlist[i];
3015 if (dev)
3016 cleanup_dev(dev);
3017 }
3018}
3019#else
3020#define hp100_isa_init() (0)
3021#define hp100_isa_cleanup() do { } while(0)
3022#endif
3023
3024static int __init hp100_module_init(void)
3025{
3026 int err;
3027
3028 err = hp100_isa_init();
3029 if (err && err != -ENODEV)
3030 goto out;
3031#ifdef CONFIG_EISA
3032 err = eisa_driver_register(&hp100_eisa_driver);
6aa20a22 3033 if (err && err != -ENODEV)
1da177e4
LT		 3034 goto out2;
3035#endif
3036#ifdef CONFIG_PCI
3037 err = pci_module_init(&hp100_pci_driver);
6aa20a22 3038 if (err && err != -ENODEV)
1da177e4
LT		 3039 goto out3;
3040#endif
3041 out:
3042 return err;
3043 out3:
3044#ifdef CONFIG_EISA
3045 eisa_driver_unregister (&hp100_eisa_driver);
3046 out2:
3047#endif
3048 hp100_isa_cleanup();
3049 goto out;
3050}
3051
3052
3053static void __exit hp100_module_exit(void)
3054{
3055 hp100_isa_cleanup();
3056#ifdef CONFIG_EISA
3057 eisa_driver_unregister (&hp100_eisa_driver);
3058#endif
3059#ifdef CONFIG_PCI
3060 pci_unregister_driver (&hp100_pci_driver);
3061#endif
3062}
3063
3064module_init(hp100_module_init)
3065module_exit(hp100_module_exit)
3066
3067
3068/*
3069 * Local variables:
3070 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"
3071 * c-indent-level: 2
3072 * tab-width: 8
3073 * End:
3074 */
Clone of davem's net-next-2.6 tree