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1/*
2** hp100.c
3** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
4**
5** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 perex Exp perex $
6**
7** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
8** Extended for new busmaster capable chipsets by
9** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
10**
11** Maintained by: Jaroslav Kysela <perex@perex.cz>
12**
13** This driver has only been tested with
14** -- HP J2585B 10/100 Mbit/s PCI Busmaster
15** -- HP J2585A 10/100 Mbit/s PCI
16** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
17** -- HP J2973A 10 Mbit/s PCI 10base-T
18** -- HP J2573 10/100 ISA
19** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
20** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
21**
22** but it should also work with the other CASCADE based adapters.
23**
24** TODO:
25** - J2573 seems to hang sometimes when in shared memory mode.
26** - Mode for Priority TX
27** - Check PCI registers, performance might be improved?
28** - To reduce interrupt load in busmaster, one could switch off
29** the interrupts that are used to refill the queues whenever the
30** queues are filled up to more than a certain threshold.
31** - some updates for EISA version of card
32**
33**
34** This code is free software; you can redistribute it and/or modify
35** it under the terms of the GNU General Public License as published by
36** the Free Software Foundation; either version 2 of the License, or
37** (at your option) any later version.
38**
39** This code is distributed in the hope that it will be useful,
40** but WITHOUT ANY WARRANTY; without even the implied warranty of
41** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42** GNU General Public License for more details.
43**
44** You should have received a copy of the GNU General Public License
45** along with this program; if not, write to the Free Software
46** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
47**
48** 1.57c -> 1.58
49** - used indent to change coding-style
50** - added KTI DP-200 EISA ID
51** - ioremap is also used for low (<1MB) memory (multi-architecture support)
52**
53** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
54** - release resources on failure in init_module
55**
56** 1.57 -> 1.57b - Jean II
57** - fix spinlocks, SMP is now working !
58**
59** 1.56 -> 1.57
60** - updates for new PCI interface for 2.1 kernels
61**
62** 1.55 -> 1.56
63** - removed printk in misc. interrupt and update statistics to allow
64** monitoring of card status
65** - timing changes in xmit routines, relogin to 100VG hub added when
66** driver does reset
67** - included fix for Compex FreedomLine PCI adapter
68**
69** 1.54 -> 1.55
70** - fixed bad initialization in init_module
71** - added Compex FreedomLine adapter
72** - some fixes in card initialization
73**
74** 1.53 -> 1.54
75** - added hardware multicast filter support (doesn't work)
76** - little changes in hp100_sense_lan routine
77** - added support for Coax and AUI (J2970)
78** - fix for multiple cards and hp100_mode parameter (insmod)
79** - fix for shared IRQ
80**
81** 1.52 -> 1.53
82** - fixed bug in multicast support
83**
84*/
85
86#define HP100_DEFAULT_PRIORITY_TX 0
87
88#undef HP100_DEBUG
89#undef HP100_DEBUG_B /* Trace */
90#undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
91
92#undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
93#undef HP100_DEBUG_TX
94#undef HP100_DEBUG_IRQ
95#undef HP100_DEBUG_RX
96
97#undef HP100_MULTICAST_FILTER /* Need to be debugged... */
98
99#include <linux/module.h>
100#include <linux/kernel.h>
101#include <linux/sched.h>
102#include <linux/string.h>
103#include <linux/errno.h>
104#include <linux/ioport.h>
105#include <linux/interrupt.h>
106#include <linux/eisa.h>
107#include <linux/pci.h>
108#include <linux/dma-mapping.h>
109#include <linux/spinlock.h>
110#include <linux/netdevice.h>
111#include <linux/etherdevice.h>
112#include <linux/skbuff.h>
113#include <linux/types.h>
114#include <linux/delay.h>
115#include <linux/init.h>
116#include <linux/bitops.h>
117#include <linux/jiffies.h>
118
119#include <asm/io.h>
120
121#include "hp100.h"
122
123/*
124 * defines
125 */
126
127#define HP100_BUS_ISA 0
128#define HP100_BUS_EISA 1
129#define HP100_BUS_PCI 2
130
131#define HP100_REGION_SIZE 0x20 /* for ioports */
132#define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
133
134#define HP100_MAX_PACKET_SIZE (1536+4)
135#define HP100_MIN_PACKET_SIZE 60
136
137#ifndef HP100_DEFAULT_RX_RATIO
138/* default - 75% onboard memory on the card are used for RX packets */
139#define HP100_DEFAULT_RX_RATIO 75
140#endif
141
142#ifndef HP100_DEFAULT_PRIORITY_TX
143/* default - don't enable transmit outgoing packets as priority */
144#define HP100_DEFAULT_PRIORITY_TX 0
145#endif
146
147/*
148 * structures
149 */
150
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
172 /* Rings for busmaster mode: */
173 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
174 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
175 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
176 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
177
178 hp100_ring_t rxring[MAX_RX_PDL];
179 hp100_ring_t txring[MAX_TX_PDL];
180
181 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
182 u_long whatever_offset; /* Offset to bus/phys/dma address */
183 int rxrcommit; /* # Rx PDLs committed to adapter */
184 int txrcommit; /* # Tx PDLs committed to adapter */
185};
186
187/*
188 * variables
189 */
190#ifdef CONFIG_ISA
191static const char *hp100_isa_tbl[] = {
192 "HWPF150", /* HP J2573 rev A */
193 "HWP1950", /* HP J2573 */
194};
195#endif
196
197#ifdef CONFIG_EISA
198static struct eisa_device_id hp100_eisa_tbl[] = {
199 { "HWPF180" }, /* HP J2577 rev A */
200 { "HWP1920" }, /* HP 27248B */
201 { "HWP1940" }, /* HP J2577 */
202 { "HWP1990" }, /* HP J2577 */
203 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
204 { "CPX0401" }, /* FreedomLine 100/VG */
205 { "" } /* Mandatory final entry ! */
206};
207MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
208#endif
209
210#ifdef CONFIG_PCI
211static DEFINE_PCI_DEVICE_TABLE(hp100_pci_tbl) = {
212 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
217 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
218/* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
219 {} /* Terminating entry */
220};
221MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
222#endif
223
224static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
225static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
226static int hp100_mode = 1;
227
228module_param(hp100_rx_ratio, int, 0);
229module_param(hp100_priority_tx, int, 0);
230module_param(hp100_mode, int, 0);
231
232/*
233 * prototypes
234 */
235
236static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
237 struct pci_dev *pci_dev);
238
239
240static int hp100_open(struct net_device *dev);
241static int hp100_close(struct net_device *dev);
242static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
243 struct net_device *dev);
244static netdev_tx_t 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);
252static irqreturn_t hp100_interrupt(int irq, void *dev_id);
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(),
281 * so we just need to "retrieve" the original mapping to bus/phys/dma
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{
291 return pci_map_single(lp->pci_dev, data,
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
338#ifdef CONFIG_ISA
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++) {
359 if (!strcmp(hp100_isa_tbl[i], sig))
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
379 /* Probe for a specific ISA address */
380 if (addr > 0xff && addr < 0x400)
381 err = hp100_isa_probe1(dev, addr);
382
383 else if (addr != 0)
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}
396#endif /* CONFIG_ISA */
397
398#if !defined(MODULE) && defined(CONFIG_ISA)
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#ifdef HP100_DEBUG_B
408 hp100_outw(0x4200, TRACE);
409 printk("hp100: %s: probe\n", dev->name);
410#endif
411
412 if (unit >= 0) {
413 sprintf(dev->name, "eth%d", unit);
414 netdev_boot_setup_check(dev);
415 }
416
417 err = hp100_isa_probe(dev, dev->base_addr);
418 if (err)
419 goto out;
420
421 return dev;
422 out:
423 free_netdev(dev);
424 return ERR_PTR(err);
425}
426#endif /* !MODULE && CONFIG_ISA */
427
428static const struct net_device_ops hp100_bm_netdev_ops = {
429 .ndo_open = hp100_open,
430 .ndo_stop = hp100_close,
431 .ndo_start_xmit = hp100_start_xmit_bm,
432 .ndo_get_stats = hp100_get_stats,
433 .ndo_set_rx_mode = hp100_set_multicast_list,
434 .ndo_change_mtu = eth_change_mtu,
435 .ndo_set_mac_address = eth_mac_addr,
436 .ndo_validate_addr = eth_validate_addr,
437};
438
439static const struct net_device_ops hp100_netdev_ops = {
440 .ndo_open = hp100_open,
441 .ndo_stop = hp100_close,
442 .ndo_start_xmit = hp100_start_xmit,
443 .ndo_get_stats = hp100_get_stats,
444 .ndo_set_rx_mode = hp100_set_multicast_list,
445 .ndo_change_mtu = eth_change_mtu,
446 .ndo_set_mac_address = eth_mac_addr,
447 .ndo_validate_addr = eth_validate_addr,
448};
449
450static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
451 u_char bus, struct pci_dev *pci_dev)
452{
453 int i;
454 int err = -ENODEV;
455 const char *eid;
456 u_int chip;
457 u_char uc;
458 u_int memory_size = 0, virt_memory_size = 0;
459 u_short local_mode, lsw;
460 short mem_mapped;
461 unsigned long mem_ptr_phys;
462 void __iomem *mem_ptr_virt;
463 struct hp100_private *lp;
464
465#ifdef HP100_DEBUG_B
466 hp100_outw(0x4201, TRACE);
467 printk("hp100: %s: probe1\n", dev->name);
468#endif
469
470 /* memory region for programmed i/o */
471 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
472 goto out1;
473
474 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
475 goto out2;
476
477 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
478#ifdef HP100_DEBUG
479 if (chip == HP100_CHIPID_SHASTA)
480 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
481 else if (chip == HP100_CHIPID_RAINIER)
482 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
483 else if (chip == HP100_CHIPID_LASSEN)
484 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
485 else
486 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
487#endif
488
489 dev->base_addr = ioaddr;
490
491 eid = hp100_read_id(ioaddr);
492 if (eid == NULL) { /* bad checksum? */
493 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
494 goto out2;
495 }
496
497 hp100_page(ID_MAC_ADDR);
498 for (i = uc = 0; i < 7; i++)
499 uc += hp100_inb(LAN_ADDR + i);
500 if (uc != 0xff) {
501 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
502 err = -EIO;
503 goto out2;
504 }
505
506 /* Make sure, that all registers are correctly updated... */
507
508 hp100_load_eeprom(dev, ioaddr);
509 wait();
510
511 /*
512 * Determine driver operation mode
513 *
514 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
515 * force driver modes:
516 * hp100_mode=1 -> default, use busmaster mode if configured.
517 * hp100_mode=2 -> enable shared memory mode
518 * hp100_mode=3 -> force use of i/o mapped mode.
519 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
520 */
521
522 /*
523 * LSW values:
524 * 0x2278 -> J2585B, PnP shared memory mode
525 * 0x2270 -> J2585B, shared memory mode, 0xdc000
526 * 0xa23c -> J2585B, I/O mapped mode
527 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
528 * 0x2220 -> EISA HP, I/O (Shasta Chip)
529 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
530 */
531
532#if 0
533 local_mode = 0x2270;
534 hp100_outw(0xfefe, OPTION_LSW);
535 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
536#endif
537
538 /* hp100_mode value maybe used in future by another card */
539 local_mode = hp100_mode;
540 if (local_mode < 1 || local_mode > 4)
541 local_mode = 1; /* default */
542#ifdef HP100_DEBUG
543 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
544 hp100_inw(OPTION_LSW));
545#endif
546
547 if (local_mode == 3) {
548 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
549 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
550 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
551 printk("hp100: IO mapped mode forced.\n");
552 } else if (local_mode == 2) {
553 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
554 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
555 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
556 printk("hp100: Shared memory mode requested.\n");
557 } else if (local_mode == 4) {
558 if (chip == HP100_CHIPID_LASSEN) {
559 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
560 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
561 printk("hp100: Busmaster mode requested.\n");
562 }
563 local_mode = 1;
564 }
565
566 if (local_mode == 1) { /* default behaviour */
567 lsw = hp100_inw(OPTION_LSW);
568
569 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
570 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
571#ifdef HP100_DEBUG
572 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
573#endif
574 local_mode = 3;
575 } else if (chip == HP100_CHIPID_LASSEN &&
576 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
577 /* Conversion to new PCI API :
578 * I don't have the doc, but I assume that the card
579 * can map the full 32bit address space.
580 * Also, we can have EISA Busmaster cards (not tested),
581 * so beware !!! - Jean II */
582 if((bus == HP100_BUS_PCI) &&
583 (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)))) {
584 /* Gracefully fallback to shared memory */
585 goto busmasterfail;
586 }
587 printk("hp100: Busmaster mode enabled.\n");
588 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
589 } else {
590 busmasterfail:
591#ifdef HP100_DEBUG
592 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
593 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
594#endif
595 /* In this case, try shared memory mode */
596 local_mode = 2;
597 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
598 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
599 }
600 }
601#ifdef HP100_DEBUG
602 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
603#endif
604
605 /* Check for shared memory on the card, eventually remap it */
606 hp100_page(HW_MAP);
607 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
608 mem_ptr_phys = 0UL;
609 mem_ptr_virt = NULL;
610 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
611 virt_memory_size = 0;
612
613 /* For memory mapped or busmaster mode, we want the memory address */
614 if (mem_mapped || (local_mode == 1)) {
615 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
616 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
617
618 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
619 printk("hp100: Can only use programmed i/o mode.\n");
620 mem_ptr_phys = 0;
621 mem_mapped = 0;
622 local_mode = 3; /* Use programmed i/o */
623 }
624
625 /* We do not need access to shared memory in busmaster mode */
626 /* However in slave mode we need to remap high (>1GB) card memory */
627 if (local_mode != 1) { /* = not busmaster */
628 /* We try with smaller memory sizes, if ioremap fails */
629 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
630 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
631#ifdef HP100_DEBUG
632 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
633#endif
634 } else {
635#ifdef HP100_DEBUG
636 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);
637#endif
638 break;
639 }
640 }
641
642 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
643 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
644 local_mode = 3;
645 virt_memory_size = 0;
646 }
647 }
648 }
649
650 if (local_mode == 3) { /* io mapped forced */
651 mem_mapped = 0;
652 mem_ptr_phys = 0;
653 mem_ptr_virt = NULL;
654 printk("hp100: Using (slow) programmed i/o mode.\n");
655 }
656
657 /* Initialise the "private" data structure for this card. */
658 lp = netdev_priv(dev);
659
660 spin_lock_init(&lp->lock);
661 strlcpy(lp->id, eid, HP100_SIG_LEN);
662 lp->chip = chip;
663 lp->mode = local_mode;
664 lp->bus = bus;
665 lp->pci_dev = pci_dev;
666 lp->priority_tx = hp100_priority_tx;
667 lp->rx_ratio = hp100_rx_ratio;
668 lp->mem_ptr_phys = mem_ptr_phys;
669 lp->mem_ptr_virt = mem_ptr_virt;
670 hp100_page(ID_MAC_ADDR);
671 lp->soft_model = hp100_inb(SOFT_MODEL);
672 lp->mac1_mode = HP100_MAC1MODE3;
673 lp->mac2_mode = HP100_MAC2MODE3;
674 memset(&lp->hash_bytes, 0x00, 8);
675
676 dev->base_addr = ioaddr;
677
678 lp->memory_size = memory_size;
679 lp->virt_memory_size = virt_memory_size;
680 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
681
682 if (lp->mode == 1) /* busmaster */
683 dev->netdev_ops = &hp100_bm_netdev_ops;
684 else
685 dev->netdev_ops = &hp100_netdev_ops;
686
687 /* Ask the card for which IRQ line it is configured */
688 if (bus == HP100_BUS_PCI) {
689 dev->irq = pci_dev->irq;
690 } else {
691 hp100_page(HW_MAP);
692 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
693 if (dev->irq == 2)
694 dev->irq = 9;
695 }
696
697 if (lp->mode == 1) /* busmaster */
698 dev->dma = 4;
699
700 /* Ask the card for its MAC address and store it for later use. */
701 hp100_page(ID_MAC_ADDR);
702 for (i = uc = 0; i < 6; i++)
703 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
704
705 /* Reset statistics (counters) */
706 hp100_clear_stats(lp, ioaddr);
707
708 /* If busmaster mode is wanted, a dma-capable memory area is needed for
709 * the rx and tx PDLs
710 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
711 * needed for the allocation of the memory area.
712 */
713
714 /* TODO: We do not need this with old cards, where PDLs are stored
715 * in the cards shared memory area. But currently, busmaster has been
716 * implemented/tested only with the lassen chip anyway... */
717 if (lp->mode == 1) { /* busmaster */
718 dma_addr_t page_baddr;
719 /* Get physically continuous memory for TX & RX PDLs */
720 /* Conversion to new PCI API :
721 * Pages are always aligned and zeroed, no need to it ourself.
722 * Doc says should be OK for EISA bus as well - Jean II */
723 lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr);
724 if (!lp->page_vaddr_algn) {
725 err = -ENOMEM;
726 goto out_mem_ptr;
727 }
728 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
729
730#ifdef HP100_DEBUG_BM
731 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);
732#endif
733 lp->rxrcommit = lp->txrcommit = 0;
734 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
735 lp->txrhead = lp->txrtail = &(lp->txring[0]);
736 }
737
738 /* Initialise the card. */
739 /* (I'm not really sure if it's a good idea to do this during probing, but
740 * like this it's assured that the lan connection type can be sensed
741 * correctly)
742 */
743 hp100_hwinit(dev);
744
745 /* Try to find out which kind of LAN the card is connected to. */
746 lp->lan_type = hp100_sense_lan(dev);
747
748 /* Print out a message what about what we think we have probed. */
749 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
750 switch (bus) {
751 case HP100_BUS_EISA:
752 printk("EISA");
753 break;
754 case HP100_BUS_PCI:
755 printk("PCI");
756 break;
757 default:
758 printk("ISA");
759 break;
760 }
761 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
762
763 if (lp->mode == 2) { /* memory mapped */
764 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
765 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
766 if (mem_ptr_virt)
767 printk(" (virtual base %p)", mem_ptr_virt);
768 printk(".\n");
769
770 /* Set for info when doing ifconfig */
771 dev->mem_start = mem_ptr_phys;
772 dev->mem_end = mem_ptr_phys + lp->memory_size;
773 }
774
775 printk("hp100: ");
776 if (lp->lan_type != HP100_LAN_ERR)
777 printk("Adapter is attached to ");
778 switch (lp->lan_type) {
779 case HP100_LAN_100:
780 printk("100Mb/s Voice Grade AnyLAN network.\n");
781 break;
782 case HP100_LAN_10:
783 printk("10Mb/s network (10baseT).\n");
784 break;
785 case HP100_LAN_COAX:
786 printk("10Mb/s network (coax).\n");
787 break;
788 default:
789 printk("Warning! Link down.\n");
790 }
791
792 err = register_netdev(dev);
793 if (err)
794 goto out3;
795
796 return 0;
797out3:
798 if (local_mode == 1)
799 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
800 lp->page_vaddr_algn,
801 virt_to_whatever(dev, lp->page_vaddr_algn));
802out_mem_ptr:
803 if (mem_ptr_virt)
804 iounmap(mem_ptr_virt);
805out2:
806 release_region(ioaddr, HP100_REGION_SIZE);
807out1:
808 return err;
809}
810
811/* This procedure puts the card into a stable init state */
812static void hp100_hwinit(struct net_device *dev)
813{
814 int ioaddr = dev->base_addr;
815 struct hp100_private *lp = netdev_priv(dev);
816
817#ifdef HP100_DEBUG_B
818 hp100_outw(0x4202, TRACE);
819 printk("hp100: %s: hwinit\n", dev->name);
820#endif
821
822 /* Initialise the card. -------------------------------------------- */
823
824 /* Clear all pending Ints and disable Ints */
825 hp100_page(PERFORMANCE);
826 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
827 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
828
829 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
830 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
831
832 if (lp->mode == 1) {
833 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
834 wait();
835 } else {
836 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
837 hp100_cascade_reset(dev, 1);
838 hp100_page(MAC_CTRL);
839 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
840 }
841
842 /* Initiate EEPROM reload */
843 hp100_load_eeprom(dev, 0);
844
845 wait();
846
847 /* Go into reset again. */
848 hp100_cascade_reset(dev, 1);
849
850 /* Set Option Registers to a safe state */
851 hp100_outw(HP100_DEBUG_EN |
852 HP100_RX_HDR |
853 HP100_EE_EN |
854 HP100_BM_WRITE |
855 HP100_BM_READ | HP100_RESET_HB |
856 HP100_FAKE_INT |
857 HP100_INT_EN |
858 HP100_MEM_EN |
859 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
860
861 hp100_outw(HP100_TRI_INT |
862 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
863
864 hp100_outb(HP100_PRIORITY_TX |
865 HP100_ADV_NXT_PKT |
866 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
867
868 /* TODO: Configure MMU for Ram Test. */
869 /* TODO: Ram Test. */
870
871 /* Re-check if adapter is still at same i/o location */
872 /* (If the base i/o in eeprom has been changed but the */
873 /* registers had not been changed, a reload of the eeprom */
874 /* would move the adapter to the address stored in eeprom */
875
876 /* TODO: Code to implement. */
877
878 /* Until here it was code from HWdiscover procedure. */
879 /* Next comes code from mmuinit procedure of SCO BM driver which is
880 * called from HWconfigure in the SCO driver. */
881
882 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
883 * multicast filter...
884 */
885 hp100_mmuinit(dev);
886
887 /* We don't turn the interrupts on here - this is done by start_interface. */
888 wait(); /* TODO: Do we really need this? */
889
890 /* Enable Hardware (e.g. unreset) */
891 hp100_cascade_reset(dev, 0);
892
893 /* ------- initialisation complete ----------- */
894
895 /* Finally try to log in the Hub if there may be a VG connection. */
896 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
897 hp100_login_to_vg_hub(dev, 0); /* relogin */
898
899}
900
901
902/*
903 * mmuinit - Reinitialise Cascade MMU and MAC settings.
904 * Note: Must already be in reset and leaves card in reset.
905 */
906static void hp100_mmuinit(struct net_device *dev)
907{
908 int ioaddr = dev->base_addr;
909 struct hp100_private *lp = netdev_priv(dev);
910 int i;
911
912#ifdef HP100_DEBUG_B
913 hp100_outw(0x4203, TRACE);
914 printk("hp100: %s: mmuinit\n", dev->name);
915#endif
916
917#ifdef HP100_DEBUG
918 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
919 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
920 return;
921 }
922#endif
923
924 /* Make sure IRQs are masked off and ack'ed. */
925 hp100_page(PERFORMANCE);
926 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
927 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
928
929 /*
930 * Enable Hardware
931 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
932 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
933 * - Clear Priority, Advance Pkt and Xmit Cmd
934 */
935
936 hp100_outw(HP100_DEBUG_EN |
937 HP100_RX_HDR |
938 HP100_EE_EN | HP100_RESET_HB |
939 HP100_IO_EN |
940 HP100_FAKE_INT |
941 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
942
943 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
944
945 if (lp->mode == 1) { /* busmaster */
946 hp100_outw(HP100_BM_WRITE |
947 HP100_BM_READ |
948 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
949 } else if (lp->mode == 2) { /* memory mapped */
950 hp100_outw(HP100_BM_WRITE |
951 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
952 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
953 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
954 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
955 } else if (lp->mode == 3) { /* i/o mapped mode */
956 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
957 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
958 }
959
960 hp100_page(HW_MAP);
961 hp100_outb(0, EARLYRXCFG);
962 hp100_outw(0, EARLYTXCFG);
963
964 /*
965 * Enable Bus Master mode
966 */
967 if (lp->mode == 1) { /* busmaster */
968 /* Experimental: Set some PCI configuration bits */
969 hp100_page(HW_MAP);
970 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
971 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
972
973 /* PCI Bus failures should result in a Misc. Interrupt */
974 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
975
976 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
977 hp100_page(HW_MAP);
978 /* Use Burst Mode and switch on PAGE_CK */
979 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
980 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
981 hp100_orb(HP100_BM_PAGE_CK, BM);
982 hp100_orb(HP100_BM_MASTER, BM);
983 } else { /* not busmaster */
984
985 hp100_page(HW_MAP);
986 hp100_andb(~HP100_BM_MASTER, BM);
987 }
988
989 /*
990 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
991 */
992 hp100_page(MMU_CFG);
993 if (lp->mode == 1) { /* only needed for Busmaster */
994 int xmit_stop, recv_stop;
995
996 if ((lp->chip == HP100_CHIPID_RAINIER) ||
997 (lp->chip == HP100_CHIPID_SHASTA)) {
998 int pdl_stop;
999
1000 /*
1001 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
1002 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
1003 * to the next higher 1k boundary) bytes for the rx-pdl's
1004 * Note: For non-etr chips the transmit stop register must be
1005 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
1006 */
1007 pdl_stop = lp->memory_size;
1008 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
1009 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
1010 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
1011#ifdef HP100_DEBUG_BM
1012 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
1013#endif
1014 } else {
1015 /* ETR chip (Lassen) in busmaster mode */
1016 xmit_stop = (lp->memory_size) - 1;
1017 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1018 }
1019
1020 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1021 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1022#ifdef HP100_DEBUG_BM
1023 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1024 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1025#endif
1026 } else {
1027 /* Slave modes (memory mapped and programmed io) */
1028 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1029 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1030#ifdef HP100_DEBUG
1031 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1032 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1033#endif
1034 }
1035
1036 /* Write MAC address into page 1 */
1037 hp100_page(MAC_ADDRESS);
1038 for (i = 0; i < 6; i++)
1039 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1040
1041 /* Zero the multicast hash registers */
1042 for (i = 0; i < 8; i++)
1043 hp100_outb(0x0, HASH_BYTE0 + i);
1044
1045 /* Set up MAC defaults */
1046 hp100_page(MAC_CTRL);
1047
1048 /* Go to LAN Page and zero all filter bits */
1049 /* Zero accept error, accept multicast, accept broadcast and accept */
1050 /* all directed packet bits */
1051 hp100_andb(~(HP100_RX_EN |
1052 HP100_TX_EN |
1053 HP100_ACC_ERRORED |
1054 HP100_ACC_MC |
1055 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1056
1057 hp100_outb(0x00, MAC_CFG_2);
1058
1059 /* Zero the frame format bit. This works around a training bug in the */
1060 /* new hubs. */
1061 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1062
1063 if (lp->priority_tx)
1064 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1065 else
1066 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1067
1068 hp100_outb(HP100_ADV_NXT_PKT |
1069 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1070
1071 /* If busmaster, initialize the PDLs */
1072 if (lp->mode == 1)
1073 hp100_init_pdls(dev);
1074
1075 /* Go to performance page and initialize isr and imr registers */
1076 hp100_page(PERFORMANCE);
1077 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1078 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1079}
1080
1081/*
1082 * open/close functions
1083 */
1084
1085static int hp100_open(struct net_device *dev)
1086{
1087 struct hp100_private *lp = netdev_priv(dev);
1088#ifdef HP100_DEBUG_B
1089 int ioaddr = dev->base_addr;
1090#endif
1091
1092#ifdef HP100_DEBUG_B
1093 hp100_outw(0x4204, TRACE);
1094 printk("hp100: %s: open\n", dev->name);
1095#endif
1096
1097 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1098 if (request_irq(dev->irq, hp100_interrupt,
1099 lp->bus == HP100_BUS_PCI || lp->bus ==
1100 HP100_BUS_EISA ? IRQF_SHARED : IRQF_DISABLED,
1101 "hp100", dev)) {
1102 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1103 return -EAGAIN;
1104 }
1105
1106 dev->trans_start = jiffies; /* prevent tx timeout */
1107 netif_start_queue(dev);
1108
1109 lp->lan_type = hp100_sense_lan(dev);
1110 lp->mac1_mode = HP100_MAC1MODE3;
1111 lp->mac2_mode = HP100_MAC2MODE3;
1112 memset(&lp->hash_bytes, 0x00, 8);
1113
1114 hp100_stop_interface(dev);
1115
1116 hp100_hwinit(dev);
1117
1118 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1119
1120 return 0;
1121}
1122
1123/* The close function is called when the interface is to be brought down */
1124static int hp100_close(struct net_device *dev)
1125{
1126 int ioaddr = dev->base_addr;
1127 struct hp100_private *lp = netdev_priv(dev);
1128
1129#ifdef HP100_DEBUG_B
1130 hp100_outw(0x4205, TRACE);
1131 printk("hp100: %s: close\n", dev->name);
1132#endif
1133
1134 hp100_page(PERFORMANCE);
1135 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1136
1137 hp100_stop_interface(dev);
1138
1139 if (lp->lan_type == HP100_LAN_100)
1140 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1141
1142 netif_stop_queue(dev);
1143
1144 free_irq(dev->irq, dev);
1145
1146#ifdef HP100_DEBUG
1147 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1148 hp100_inw(OPTION_LSW));
1149#endif
1150
1151 return 0;
1152}
1153
1154
1155/*
1156 * Configure the PDL Rx rings and LAN
1157 */
1158static void hp100_init_pdls(struct net_device *dev)
1159{
1160 struct hp100_private *lp = netdev_priv(dev);
1161 hp100_ring_t *ringptr;
1162 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1163 int i;
1164
1165#ifdef HP100_DEBUG_B
1166 int ioaddr = dev->base_addr;
1167#endif
1168
1169#ifdef HP100_DEBUG_B
1170 hp100_outw(0x4206, TRACE);
1171 printk("hp100: %s: init pdls\n", dev->name);
1172#endif
1173
1174 if (!lp->page_vaddr_algn)
1175 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1176 else {
1177 /* pageptr shall point into the DMA accessible memory region */
1178 /* we use this pointer to status the upper limit of allocated */
1179 /* memory in the allocated page. */
1180 /* note: align the pointers to the pci cache line size */
1181 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1182 pageptr = lp->page_vaddr_algn;
1183
1184 lp->rxrcommit = 0;
1185 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1186
1187 /* Initialise Rx Ring */
1188 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1189 lp->rxring[i].next = ringptr;
1190 ringptr = &(lp->rxring[i]);
1191 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1192 }
1193
1194 /* Initialise Tx Ring */
1195 lp->txrcommit = 0;
1196 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1197 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1198 lp->txring[i].next = ringptr;
1199 ringptr = &(lp->txring[i]);
1200 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1201 }
1202 }
1203}
1204
1205
1206/* These functions "format" the entries in the pdl structure */
1207/* They return how much memory the fragments need. */
1208static int hp100_init_rxpdl(struct net_device *dev,
1209 register hp100_ring_t * ringptr,
1210 register u32 * pdlptr)
1211{
1212 /* pdlptr is starting address for this pdl */
1213
1214 if (0 != (((unsigned long) pdlptr) & 0xf))
1215 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1216 dev->name, (unsigned long) pdlptr);
1217
1218 ringptr->pdl = pdlptr + 1;
1219 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1220 ringptr->skb = (void *) NULL;
1221
1222 /*
1223 * Write address and length of first PDL Fragment (which is used for
1224 * storing the RX-Header
1225 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1226 * store this information. (PDH is at offset 0x04)
1227 */
1228 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1229
1230 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1231 *(pdlptr + 3) = 4; /* Length Frag 1 */
1232
1233 return roundup(MAX_RX_FRAG * 2 + 2, 4);
1234}
1235
1236
1237static int hp100_init_txpdl(struct net_device *dev,
1238 register hp100_ring_t * ringptr,
1239 register u32 * pdlptr)
1240{
1241 if (0 != (((unsigned long) pdlptr) & 0xf))
1242 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1243
1244 ringptr->pdl = pdlptr; /* +1; */
1245 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1246 ringptr->skb = (void *) NULL;
1247
1248 return roundup(MAX_TX_FRAG * 2 + 2, 4);
1249}
1250
1251/*
1252 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1253 * for possible odd word alignment rounding up to next dword and set PDL
1254 * address for fragment#2
1255 * Returns: 0 if unable to allocate skb_buff
1256 * 1 if successful
1257 */
1258static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1259 struct net_device *dev)
1260{
1261#ifdef HP100_DEBUG_B
1262 int ioaddr = dev->base_addr;
1263#endif
1264#ifdef HP100_DEBUG_BM
1265 u_int *p;
1266#endif
1267
1268#ifdef HP100_DEBUG_B
1269 hp100_outw(0x4207, TRACE);
1270 printk("hp100: %s: build rx pdl\n", dev->name);
1271#endif
1272
1273 /* Allocate skb buffer of maximum size */
1274 /* Note: This depends on the alloc_skb functions allocating more
1275 * space than requested, i.e. aligning to 16bytes */
1276
1277 ringptr->skb = netdev_alloc_skb(dev, roundup(MAX_ETHER_SIZE + 2, 4));
1278
1279 if (NULL != ringptr->skb) {
1280 /*
1281 * Reserve 2 bytes at the head of the buffer to land the IP header
1282 * on a long word boundary (According to the Network Driver section
1283 * in the Linux KHG, this should help to increase performance.)
1284 */
1285 skb_reserve(ringptr->skb, 2);
1286
1287 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1288
1289 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1290 /* Note: 1st Fragment is used for the 4 byte packet status
1291 * (receive header). Its PDL entries are set up by init_rxpdl. So
1292 * here we only have to set up the PDL fragment entries for the data
1293 * part. Those 4 bytes will be stored in the DMA memory region
1294 * directly before the PDL.
1295 */
1296#ifdef HP100_DEBUG_BM
1297 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1298 dev->name, (u_int) ringptr->pdl,
1299 roundup(MAX_ETHER_SIZE + 2, 4),
1300 (unsigned int) ringptr->skb->data);
1301#endif
1302
1303 /* Conversion to new PCI API : map skbuf data to PCI bus.
1304 * Doc says it's OK for EISA as well - Jean II */
1305 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1306 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1307 ringptr->skb->data);
1308 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1309
1310#ifdef HP100_DEBUG_BM
1311 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1312 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1313#endif
1314 return 1;
1315 }
1316 /* else: */
1317 /* alloc_skb failed (no memory) -> still can receive the header
1318 * fragment into PDL memory. make PDL safe by clearing msgptr and
1319 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1320 */
1321#ifdef HP100_DEBUG_BM
1322 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1323#endif
1324
1325 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1326
1327 return 0;
1328}
1329
1330/*
1331 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1332 *
1333 * Makes assumption that skb's are always contiguous memory areas and
1334 * therefore PDLs contain only 2 physical fragments.
1335 * - While the number of Rx PDLs with buffers is less than maximum
1336 * a. Get a maximum packet size skb
1337 * b. Put the physical address of the buffer into the PDL.
1338 * c. Output physical address of PDL to adapter.
1339 */
1340static void hp100_rxfill(struct net_device *dev)
1341{
1342 int ioaddr = dev->base_addr;
1343
1344 struct hp100_private *lp = netdev_priv(dev);
1345 hp100_ring_t *ringptr;
1346
1347#ifdef HP100_DEBUG_B
1348 hp100_outw(0x4208, TRACE);
1349 printk("hp100: %s: rxfill\n", dev->name);
1350#endif
1351
1352 hp100_page(PERFORMANCE);
1353
1354 while (lp->rxrcommit < MAX_RX_PDL) {
1355 /*
1356 ** Attempt to get a buffer and build a Rx PDL.
1357 */
1358 ringptr = lp->rxrtail;
1359 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1360 return; /* None available, return */
1361 }
1362
1363 /* Hand this PDL over to the card */
1364 /* Note: This needs performance page selected! */
1365#ifdef HP100_DEBUG_BM
1366 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1367 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1368 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1369#endif
1370
1371 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1372
1373 lp->rxrcommit += 1;
1374 lp->rxrtail = ringptr->next;
1375 }
1376}
1377
1378/*
1379 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1380 */
1381
1382static void hp100_BM_shutdown(struct net_device *dev)
1383{
1384 int ioaddr = dev->base_addr;
1385 struct hp100_private *lp = netdev_priv(dev);
1386 unsigned long time;
1387
1388#ifdef HP100_DEBUG_B
1389 hp100_outw(0x4209, TRACE);
1390 printk("hp100: %s: bm shutdown\n", dev->name);
1391#endif
1392
1393 hp100_page(PERFORMANCE);
1394 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1395 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1396
1397 /* Ensure Interrupts are off */
1398 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1399
1400 /* Disable all MAC activity */
1401 hp100_page(MAC_CTRL);
1402 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1403
1404 /* If cascade MMU is not already in reset */
1405 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1406 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1407 * MMU pointers will not be reset out from underneath
1408 */
1409 hp100_page(MAC_CTRL);
1410 for (time = 0; time < 5000; time++) {
1411 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1412 break;
1413 }
1414
1415 /* Shutdown algorithm depends on the generation of Cascade */
1416 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1417 /* Disable Busmaster mode and wait for bit to go to zero. */
1418 hp100_page(HW_MAP);
1419 hp100_andb(~HP100_BM_MASTER, BM);
1420 /* 100 ms timeout */
1421 for (time = 0; time < 32000; time++) {
1422 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1423 break;
1424 }
1425 } else { /* Shasta or Rainier Shutdown/Reset */
1426 /* To ensure all bus master inloading activity has ceased,
1427 * wait for no Rx PDAs or no Rx packets on card.
1428 */
1429 hp100_page(PERFORMANCE);
1430 /* 100 ms timeout */
1431 for (time = 0; time < 10000; time++) {
1432 /* RX_PDL: PDLs not executed. */
1433 /* RX_PKT_CNT: RX'd packets on card. */
1434 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1435 break;
1436 }
1437
1438 if (time >= 10000)
1439 printk("hp100: %s: BM shutdown error.\n", dev->name);
1440
1441 /* To ensure all bus master outloading activity has ceased,
1442 * wait until the Tx PDA count goes to zero or no more Tx space
1443 * available in the Tx region of the card.
1444 */
1445 /* 100 ms timeout */
1446 for (time = 0; time < 10000; time++) {
1447 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1448 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1449 break;
1450 }
1451
1452 /* Disable Busmaster mode */
1453 hp100_page(HW_MAP);
1454 hp100_andb(~HP100_BM_MASTER, BM);
1455 } /* end of shutdown procedure for non-etr parts */
1456
1457 hp100_cascade_reset(dev, 1);
1458 }
1459 hp100_page(PERFORMANCE);
1460 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1461 /* Busmaster mode should be shut down now. */
1462}
1463
1464static int hp100_check_lan(struct net_device *dev)
1465{
1466 struct hp100_private *lp = netdev_priv(dev);
1467
1468 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1469 hp100_stop_interface(dev);
1470 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1471 printk("hp100: %s: no connection found - check wire\n", dev->name);
1472 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1473 return -EIO;
1474 }
1475 if (lp->lan_type == HP100_LAN_100)
1476 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1477 hp100_start_interface(dev);
1478 }
1479 return 0;
1480}
1481
1482/*
1483 * transmit functions
1484 */
1485
1486/* tx function for busmaster mode */
1487static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
1488 struct net_device *dev)
1489{
1490 unsigned long flags;
1491 int i, ok_flag;
1492 int ioaddr = dev->base_addr;
1493 struct hp100_private *lp = netdev_priv(dev);
1494 hp100_ring_t *ringptr;
1495
1496#ifdef HP100_DEBUG_B
1497 hp100_outw(0x4210, TRACE);
1498 printk("hp100: %s: start_xmit_bm\n", dev->name);
1499#endif
1500 if (skb->len <= 0)
1501 goto drop;
1502
1503 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1504 return NETDEV_TX_OK;
1505
1506 /* Get Tx ring tail pointer */
1507 if (lp->txrtail->next == lp->txrhead) {
1508 /* No memory. */
1509#ifdef HP100_DEBUG
1510 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1511#endif
1512 /* not waited long enough since last tx? */
1513 if (time_before(jiffies, dev_trans_start(dev) + HZ))
1514 goto drop;
1515
1516 if (hp100_check_lan(dev))
1517 goto drop;
1518
1519 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1520 /* we have a 100Mb/s adapter but it isn't connected to hub */
1521 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1522 hp100_stop_interface(dev);
1523 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1524 hp100_start_interface(dev);
1525 } else {
1526 spin_lock_irqsave(&lp->lock, flags);
1527 hp100_ints_off(); /* Useful ? Jean II */
1528 i = hp100_sense_lan(dev);
1529 hp100_ints_on();
1530 spin_unlock_irqrestore(&lp->lock, flags);
1531 if (i == HP100_LAN_ERR)
1532 printk("hp100: %s: link down detected\n", dev->name);
1533 else if (lp->lan_type != i) { /* cable change! */
1534 /* it's very hard - all network settings must be changed!!! */
1535 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1536 lp->lan_type = i;
1537 hp100_stop_interface(dev);
1538 if (lp->lan_type == HP100_LAN_100)
1539 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1540 hp100_start_interface(dev);
1541 } else {
1542 printk("hp100: %s: interface reset\n", dev->name);
1543 hp100_stop_interface(dev);
1544 if (lp->lan_type == HP100_LAN_100)
1545 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1546 hp100_start_interface(dev);
1547 }
1548 }
1549
1550 goto drop;
1551 }
1552
1553 /*
1554 * we have to turn int's off before modifying this, otherwise
1555 * a tx_pdl_cleanup could occur at the same time
1556 */
1557 spin_lock_irqsave(&lp->lock, flags);
1558 ringptr = lp->txrtail;
1559 lp->txrtail = ringptr->next;
1560
1561 /* Check whether packet has minimal packet size */
1562 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1563 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1564
1565 ringptr->skb = skb;
1566 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1567 if (lp->chip == HP100_CHIPID_SHASTA) {
1568 /* TODO:Could someone who has the EISA card please check if this works? */
1569 ringptr->pdl[2] = i;
1570 } else { /* Lassen */
1571 /* In the PDL, don't use the padded size but the real packet size: */
1572 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1573 }
1574 /* Conversion to new PCI API : map skbuf data to PCI bus.
1575 * Doc says it's OK for EISA as well - Jean II */
1576 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1577
1578 /* Hand this PDL to the card. */
1579 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1580
1581 lp->txrcommit++;
1582
1583 dev->stats.tx_packets++;
1584 dev->stats.tx_bytes += skb->len;
1585
1586 spin_unlock_irqrestore(&lp->lock, flags);
1587
1588 return NETDEV_TX_OK;
1589
1590drop:
1591 dev_kfree_skb(skb);
1592 return NETDEV_TX_OK;
1593}
1594
1595
1596/* clean_txring checks if packets have been sent by the card by reading
1597 * the TX_PDL register from the performance page and comparing it to the
1598 * number of committed packets. It then frees the skb's of the packets that
1599 * obviously have been sent to the network.
1600 *
1601 * Needs the PERFORMANCE page selected.
1602 */
1603static void hp100_clean_txring(struct net_device *dev)
1604{
1605 struct hp100_private *lp = netdev_priv(dev);
1606 int ioaddr = dev->base_addr;
1607 int donecount;
1608
1609#ifdef HP100_DEBUG_B
1610 hp100_outw(0x4211, TRACE);
1611 printk("hp100: %s: clean txring\n", dev->name);
1612#endif
1613
1614 /* How many PDLs have been transmitted? */
1615 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1616
1617#ifdef HP100_DEBUG
1618 if (donecount > MAX_TX_PDL)
1619 printk("hp100: %s: Warning: More PDLs transmitted than committed to card???\n", dev->name);
1620#endif
1621
1622 for (; 0 != donecount; donecount--) {
1623#ifdef HP100_DEBUG_BM
1624 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1625 dev->name, (u_int) lp->txrhead->skb->data,
1626 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1627#endif
1628 /* Conversion to new PCI API : NOP */
1629 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1630 dev_kfree_skb_any(lp->txrhead->skb);
1631 lp->txrhead->skb = (void *) NULL;
1632 lp->txrhead = lp->txrhead->next;
1633 lp->txrcommit--;
1634 }
1635}
1636
1637/* tx function for slave modes */
1638static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
1639 struct net_device *dev)
1640{
1641 unsigned long flags;
1642 int i, ok_flag;
1643 int ioaddr = dev->base_addr;
1644 u_short val;
1645 struct hp100_private *lp = netdev_priv(dev);
1646
1647#ifdef HP100_DEBUG_B
1648 hp100_outw(0x4212, TRACE);
1649 printk("hp100: %s: start_xmit\n", dev->name);
1650#endif
1651 if (skb->len <= 0)
1652 goto drop;
1653
1654 if (hp100_check_lan(dev))
1655 goto drop;
1656
1657 /* If there is not enough free memory on the card... */
1658 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1659 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1660#ifdef HP100_DEBUG
1661 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1662#endif
1663 /* not waited long enough since last failed tx try? */
1664 if (time_before(jiffies, dev_trans_start(dev) + HZ)) {
1665#ifdef HP100_DEBUG
1666 printk("hp100: %s: trans_start timing problem\n",
1667 dev->name);
1668#endif
1669 goto drop;
1670 }
1671 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1672 /* we have a 100Mb/s adapter but it isn't connected to hub */
1673 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1674 hp100_stop_interface(dev);
1675 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1676 hp100_start_interface(dev);
1677 } else {
1678 spin_lock_irqsave(&lp->lock, flags);
1679 hp100_ints_off(); /* Useful ? Jean II */
1680 i = hp100_sense_lan(dev);
1681 hp100_ints_on();
1682 spin_unlock_irqrestore(&lp->lock, flags);
1683 if (i == HP100_LAN_ERR)
1684 printk("hp100: %s: link down detected\n", dev->name);
1685 else if (lp->lan_type != i) { /* cable change! */
1686 /* it's very hard - all network setting must be changed!!! */
1687 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1688 lp->lan_type = i;
1689 hp100_stop_interface(dev);
1690 if (lp->lan_type == HP100_LAN_100)
1691 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1692 hp100_start_interface(dev);
1693 } else {
1694 printk("hp100: %s: interface reset\n", dev->name);
1695 hp100_stop_interface(dev);
1696 if (lp->lan_type == HP100_LAN_100)
1697 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1698 hp100_start_interface(dev);
1699 mdelay(1);
1700 }
1701 }
1702 goto drop;
1703 }
1704
1705 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1706#ifdef HP100_DEBUG_TX
1707 printk("hp100: %s: start_xmit: busy\n", dev->name);
1708#endif
1709 }
1710
1711 spin_lock_irqsave(&lp->lock, flags);
1712 hp100_ints_off();
1713 val = hp100_inw(IRQ_STATUS);
1714 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1715 * when the current packet being transmitted on the wire is completed. */
1716 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1717#ifdef HP100_DEBUG_TX
1718 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1719 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1720#endif
1721
1722 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1723 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1724
1725 hp100_outw(i, DATA32); /* tell card the total packet length */
1726 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1727
1728 if (lp->mode == 2) { /* memory mapped */
1729 /* Note: The J2585B needs alignment to 32bits here! */
1730 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1731 if (!ok_flag)
1732 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1733 } else { /* programmed i/o */
1734 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1735 (skb->len + 3) >> 2);
1736 if (!ok_flag)
1737 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1738 hp100_outl(0, DATA32);
1739 }
1740
1741 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1742
1743 dev->stats.tx_packets++;
1744 dev->stats.tx_bytes += skb->len;
1745 hp100_ints_on();
1746 spin_unlock_irqrestore(&lp->lock, flags);
1747
1748 dev_kfree_skb_any(skb);
1749
1750#ifdef HP100_DEBUG_TX
1751 printk("hp100: %s: start_xmit: end\n", dev->name);
1752#endif
1753
1754 return NETDEV_TX_OK;
1755
1756drop:
1757 dev_kfree_skb(skb);
1758 return NETDEV_TX_OK;
1759
1760}
1761
1762
1763/*
1764 * Receive Function (Non-Busmaster mode)
1765 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1766 * packet counter is non-zero.
1767 * For non-busmaster, this function does the whole work of transferring
1768 * the packet to the host memory and then up to higher layers via skb
1769 * and netif_rx.
1770 */
1771
1772static void hp100_rx(struct net_device *dev)
1773{
1774 int packets, pkt_len;
1775 int ioaddr = dev->base_addr;
1776 struct hp100_private *lp = netdev_priv(dev);
1777 u_int header;
1778 struct sk_buff *skb;
1779
1780#ifdef DEBUG_B
1781 hp100_outw(0x4213, TRACE);
1782 printk("hp100: %s: rx\n", dev->name);
1783#endif
1784
1785 /* First get indication of received lan packet */
1786 /* RX_PKT_CND indicates the number of packets which have been fully */
1787 /* received onto the card but have not been fully transferred of the card */
1788 packets = hp100_inb(RX_PKT_CNT);
1789#ifdef HP100_DEBUG_RX
1790 if (packets > 1)
1791 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1792#endif
1793
1794 while (packets-- > 0) {
1795 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1796 /* really advanced to the next packet. */
1797 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1798#ifdef HP100_DEBUG_RX
1799 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1800#endif
1801 }
1802
1803 /* First we get the header, which contains information about the */
1804 /* actual length of the received packet. */
1805 if (lp->mode == 2) { /* memory mapped mode */
1806 header = readl(lp->mem_ptr_virt);
1807 } else /* programmed i/o */
1808 header = hp100_inl(DATA32);
1809
1810 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1811
1812#ifdef HP100_DEBUG_RX
1813 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1814 dev->name, header & HP100_PKT_LEN_MASK,
1815 (header >> 16) & 0xfff8, (header >> 16) & 7);
1816#endif
1817
1818 /* Now we allocate the skb and transfer the data into it. */
1819 skb = netdev_alloc_skb(dev, pkt_len + 2);
1820 if (skb == NULL) { /* Not enough memory->drop packet */
1821#ifdef HP100_DEBUG
1822 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1823 dev->name, pkt_len);
1824#endif
1825 dev->stats.rx_dropped++;
1826 } else { /* skb successfully allocated */
1827
1828 u_char *ptr;
1829
1830 skb_reserve(skb,2);
1831
1832 /* ptr to start of the sk_buff data area */
1833 skb_put(skb, pkt_len);
1834 ptr = skb->data;
1835
1836 /* Now transfer the data from the card into that area */
1837 if (lp->mode == 2)
1838 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1839 else /* io mapped */
1840 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1841
1842 skb->protocol = eth_type_trans(skb, dev);
1843
1844#ifdef HP100_DEBUG_RX
1845 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1846 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1847 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1848 ptr[9], ptr[10], ptr[11]);
1849#endif
1850 netif_rx(skb);
1851 dev->stats.rx_packets++;
1852 dev->stats.rx_bytes += pkt_len;
1853 }
1854
1855 /* Indicate the card that we have got the packet */
1856 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1857
1858 switch (header & 0x00070000) {
1859 case (HP100_MULTI_ADDR_HASH << 16):
1860 case (HP100_MULTI_ADDR_NO_HASH << 16):
1861 dev->stats.multicast++;
1862 break;
1863 }
1864 } /* end of while(there are packets) loop */
1865#ifdef HP100_DEBUG_RX
1866 printk("hp100_rx: %s: end\n", dev->name);
1867#endif
1868}
1869
1870/*
1871 * Receive Function for Busmaster Mode
1872 */
1873static void hp100_rx_bm(struct net_device *dev)
1874{
1875 int ioaddr = dev->base_addr;
1876 struct hp100_private *lp = netdev_priv(dev);
1877 hp100_ring_t *ptr;
1878 u_int header;
1879 int pkt_len;
1880
1881#ifdef HP100_DEBUG_B
1882 hp100_outw(0x4214, TRACE);
1883 printk("hp100: %s: rx_bm\n", dev->name);
1884#endif
1885
1886#ifdef HP100_DEBUG
1887 if (0 == lp->rxrcommit) {
1888 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1889 return;
1890 } else
1891 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1892 * the cards BM engine */
1893 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1894 printk("hp100: %s: More packets received than committed? RX_PKT_CNT=0x%x, commit=0x%x\n",
1895 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1896 lp->rxrcommit);
1897 return;
1898 }
1899#endif
1900
1901 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1902 /*
1903 * The packet was received into the pdl pointed to by lp->rxrhead (
1904 * the oldest pdl in the ring
1905 */
1906
1907 /* First we get the header, which contains information about the */
1908 /* actual length of the received packet. */
1909
1910 ptr = lp->rxrhead;
1911
1912 header = *(ptr->pdl - 1);
1913 pkt_len = (header & HP100_PKT_LEN_MASK);
1914
1915 /* Conversion to new PCI API : NOP */
1916 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1917
1918#ifdef HP100_DEBUG_BM
1919 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1920 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1921 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1922 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",
1923 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1924 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1925 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1926#endif
1927
1928 if ((pkt_len >= MIN_ETHER_SIZE) &&
1929 (pkt_len <= MAX_ETHER_SIZE)) {
1930 if (ptr->skb == NULL) {
1931 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1932 /* can happen if we only allocated room for the pdh due to memory shortage. */
1933 dev->stats.rx_dropped++;
1934 } else {
1935 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1936 ptr->skb->protocol =
1937 eth_type_trans(ptr->skb, dev);
1938
1939 netif_rx(ptr->skb); /* Up and away... */
1940
1941 dev->stats.rx_packets++;
1942 dev->stats.rx_bytes += pkt_len;
1943 }
1944
1945 switch (header & 0x00070000) {
1946 case (HP100_MULTI_ADDR_HASH << 16):
1947 case (HP100_MULTI_ADDR_NO_HASH << 16):
1948 dev->stats.multicast++;
1949 break;
1950 }
1951 } else {
1952#ifdef HP100_DEBUG
1953 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1954#endif
1955 if (ptr->skb != NULL)
1956 dev_kfree_skb_any(ptr->skb);
1957 dev->stats.rx_errors++;
1958 }
1959
1960 lp->rxrhead = lp->rxrhead->next;
1961
1962 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1963 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1964 /* No space for skb, header can still be received. */
1965#ifdef HP100_DEBUG
1966 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1967#endif
1968 return;
1969 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1970 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1971 lp->rxrtail = lp->rxrtail->next;
1972 }
1973
1974 }
1975}
1976
1977/*
1978 * statistics
1979 */
1980static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1981{
1982 unsigned long flags;
1983 int ioaddr = dev->base_addr;
1984 struct hp100_private *lp = netdev_priv(dev);
1985
1986#ifdef HP100_DEBUG_B
1987 hp100_outw(0x4215, TRACE);
1988#endif
1989
1990 spin_lock_irqsave(&lp->lock, flags);
1991 hp100_ints_off(); /* Useful ? Jean II */
1992 hp100_update_stats(dev);
1993 hp100_ints_on();
1994 spin_unlock_irqrestore(&lp->lock, flags);
1995 return &(dev->stats);
1996}
1997
1998static void hp100_update_stats(struct net_device *dev)
1999{
2000 int ioaddr = dev->base_addr;
2001 u_short val;
2002
2003#ifdef HP100_DEBUG_B
2004 hp100_outw(0x4216, TRACE);
2005 printk("hp100: %s: update-stats\n", dev->name);
2006#endif
2007
2008 /* Note: Statistics counters clear when read. */
2009 hp100_page(MAC_CTRL);
2010 val = hp100_inw(DROPPED) & 0x0fff;
2011 dev->stats.rx_errors += val;
2012 dev->stats.rx_over_errors += val;
2013 val = hp100_inb(CRC);
2014 dev->stats.rx_errors += val;
2015 dev->stats.rx_crc_errors += val;
2016 val = hp100_inb(ABORT);
2017 dev->stats.tx_errors += val;
2018 dev->stats.tx_aborted_errors += val;
2019 hp100_page(PERFORMANCE);
2020}
2021
2022static void hp100_misc_interrupt(struct net_device *dev)
2023{
2024#ifdef HP100_DEBUG_B
2025 int ioaddr = dev->base_addr;
2026#endif
2027
2028#ifdef HP100_DEBUG_B
2029 int ioaddr = dev->base_addr;
2030 hp100_outw(0x4216, TRACE);
2031 printk("hp100: %s: misc_interrupt\n", dev->name);
2032#endif
2033
2034 /* Note: Statistics counters clear when read. */
2035 dev->stats.rx_errors++;
2036 dev->stats.tx_errors++;
2037}
2038
2039static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2040{
2041 unsigned long flags;
2042
2043#ifdef HP100_DEBUG_B
2044 hp100_outw(0x4217, TRACE);
2045 printk("hp100: %s: clear_stats\n", dev->name);
2046#endif
2047
2048 spin_lock_irqsave(&lp->lock, flags);
2049 hp100_page(MAC_CTRL); /* get all statistics bytes */
2050 hp100_inw(DROPPED);
2051 hp100_inb(CRC);
2052 hp100_inb(ABORT);
2053 hp100_page(PERFORMANCE);
2054 spin_unlock_irqrestore(&lp->lock, flags);
2055}
2056
2057
2058/*
2059 * multicast setup
2060 */
2061
2062/*
2063 * Set or clear the multicast filter for this adapter.
2064 */
2065
2066static void hp100_set_multicast_list(struct net_device *dev)
2067{
2068 unsigned long flags;
2069 int ioaddr = dev->base_addr;
2070 struct hp100_private *lp = netdev_priv(dev);
2071
2072#ifdef HP100_DEBUG_B
2073 hp100_outw(0x4218, TRACE);
2074 printk("hp100: %s: set_mc_list\n", dev->name);
2075#endif
2076
2077 spin_lock_irqsave(&lp->lock, flags);
2078 hp100_ints_off();
2079 hp100_page(MAC_CTRL);
2080 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2081
2082 if (dev->flags & IFF_PROMISC) {
2083 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2084 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2085 memset(&lp->hash_bytes, 0xff, 8);
2086 } else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) {
2087 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2088 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2089#ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2090 if (dev->flags & IFF_ALLMULTI) {
2091 /* set hash filter to receive all multicast packets */
2092 memset(&lp->hash_bytes, 0xff, 8);
2093 } else {
2094 int i, idx;
2095 u_char *addrs;
2096 struct netdev_hw_addr *ha;
2097
2098 memset(&lp->hash_bytes, 0x00, 8);
2099#ifdef HP100_DEBUG
2100 printk("hp100: %s: computing hash filter - mc_count = %i\n",
2101 dev->name, netdev_mc_count(dev));
2102#endif
2103 netdev_for_each_mc_addr(ha, dev) {
2104 addrs = ha->addr;
2105#ifdef HP100_DEBUG
2106 printk("hp100: %s: multicast = %pM, ",
2107 dev->name, addrs);
2108#endif
2109 for (i = idx = 0; i < 6; i++) {
2110 idx ^= *addrs++ & 0x3f;
2111 printk(":%02x:", idx);
2112 }
2113#ifdef HP100_DEBUG
2114 printk("idx = %i\n", idx);
2115#endif
2116 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2117 }
2118 }
2119#else
2120 memset(&lp->hash_bytes, 0xff, 8);
2121#endif
2122 } else {
2123 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2124 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2125 memset(&lp->hash_bytes, 0x00, 8);
2126 }
2127
2128 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2129 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2130 int i;
2131
2132 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2133 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2134 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2135
2136 hp100_page(MAC_ADDRESS);
2137 for (i = 0; i < 8; i++)
2138 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2139#ifdef HP100_DEBUG
2140 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2141 dev->name, lp->mac1_mode, lp->mac2_mode,
2142 lp->hash_bytes[0], lp->hash_bytes[1],
2143 lp->hash_bytes[2], lp->hash_bytes[3],
2144 lp->hash_bytes[4], lp->hash_bytes[5],
2145 lp->hash_bytes[6], lp->hash_bytes[7]);
2146#endif
2147
2148 if (lp->lan_type == HP100_LAN_100) {
2149#ifdef HP100_DEBUG
2150 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2151#endif
2152 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2153 }
2154 } else {
2155 int i;
2156 u_char old_hash_bytes[8];
2157
2158 hp100_page(MAC_ADDRESS);
2159 for (i = 0; i < 8; i++)
2160 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2161 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2162 for (i = 0; i < 8; i++)
2163 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2164#ifdef HP100_DEBUG
2165 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2166 dev->name, lp->hash_bytes[0],
2167 lp->hash_bytes[1], lp->hash_bytes[2],
2168 lp->hash_bytes[3], lp->hash_bytes[4],
2169 lp->hash_bytes[5], lp->hash_bytes[6],
2170 lp->hash_bytes[7]);
2171#endif
2172
2173 if (lp->lan_type == HP100_LAN_100) {
2174#ifdef HP100_DEBUG
2175 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2176#endif
2177 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2178 }
2179 }
2180 }
2181
2182 hp100_page(MAC_CTRL);
2183 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2184 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2185
2186 hp100_page(PERFORMANCE);
2187 hp100_ints_on();
2188 spin_unlock_irqrestore(&lp->lock, flags);
2189}
2190
2191/*
2192 * hardware interrupt handling
2193 */
2194
2195static irqreturn_t hp100_interrupt(int irq, void *dev_id)
2196{
2197 struct net_device *dev = (struct net_device *) dev_id;
2198 struct hp100_private *lp = netdev_priv(dev);
2199
2200 int ioaddr;
2201 u_int val;
2202
2203 if (dev == NULL)
2204 return IRQ_NONE;
2205 ioaddr = dev->base_addr;
2206
2207 spin_lock(&lp->lock);
2208
2209 hp100_ints_off();
2210
2211#ifdef HP100_DEBUG_B
2212 hp100_outw(0x4219, TRACE);
2213#endif
2214
2215 /* hp100_page( PERFORMANCE ); */
2216 val = hp100_inw(IRQ_STATUS);
2217#ifdef HP100_DEBUG_IRQ
2218 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2219 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2220 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2221#endif
2222
2223 if (val == 0) { /* might be a shared interrupt */
2224 spin_unlock(&lp->lock);
2225 hp100_ints_on();
2226 return IRQ_NONE;
2227 }
2228 /* We're only interested in those interrupts we really enabled. */
2229 /* val &= hp100_inw( IRQ_MASK ); */
2230
2231 /*
2232 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2233 * is considered executed whenever the RX_PDL data structure is no longer
2234 * needed.
2235 */
2236 if (val & HP100_RX_PDL_FILL_COMPL) {
2237 if (lp->mode == 1)
2238 hp100_rx_bm(dev);
2239 else {
2240 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2241 }
2242 }
2243
2244 /*
2245 * The RX_PACKET interrupt is set, when the receive packet counter is
2246 * non zero. We use this interrupt for receiving in slave mode. In
2247 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2248 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2249 * we somehow have missed a rx_pdl_fill_compl interrupt.
2250 */
2251
2252 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2253 if (lp->mode != 1) /* non busmaster */
2254 hp100_rx(dev);
2255 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2256 /* Shouldn't happen - maybe we missed a RX_PDL_FILL Interrupt? */
2257 hp100_rx_bm(dev);
2258 }
2259 }
2260
2261 /*
2262 * Ack. that we have noticed the interrupt and thereby allow next one.
2263 * Note that this is now done after the slave rx function, since first
2264 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2265 * on the J2573.
2266 */
2267 hp100_outw(val, IRQ_STATUS);
2268
2269 /*
2270 * RX_ERROR is set when a packet is dropped due to no memory resources on
2271 * the card or when a RCV_ERR occurs.
2272 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2273 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2274 */
2275 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2276#ifdef HP100_DEBUG_IRQ
2277 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2278#endif
2279 hp100_update_stats(dev);
2280 if (lp->mode == 1) {
2281 hp100_rxfill(dev);
2282 hp100_clean_txring(dev);
2283 }
2284 }
2285
2286 /*
2287 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2288 */
2289 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2290 hp100_rxfill(dev);
2291
2292 /*
2293 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2294 * is completed
2295 */
2296 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2297 hp100_clean_txring(dev);
2298
2299 /*
2300 * MISC_ERROR is set when either the LAN link goes down or a detected
2301 * bus error occurs.
2302 */
2303 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2304#ifdef HP100_DEBUG_IRQ
2305 printk
2306 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2307 dev->name);
2308#endif
2309 if (lp->mode == 1) {
2310 hp100_clean_txring(dev);
2311 hp100_rxfill(dev);
2312 }
2313 hp100_misc_interrupt(dev);
2314 }
2315
2316 spin_unlock(&lp->lock);
2317 hp100_ints_on();
2318 return IRQ_HANDLED;
2319}
2320
2321/*
2322 * some misc functions
2323 */
2324
2325static void hp100_start_interface(struct net_device *dev)
2326{
2327 unsigned long flags;
2328 int ioaddr = dev->base_addr;
2329 struct hp100_private *lp = netdev_priv(dev);
2330
2331#ifdef HP100_DEBUG_B
2332 hp100_outw(0x4220, TRACE);
2333 printk("hp100: %s: hp100_start_interface\n", dev->name);
2334#endif
2335
2336 spin_lock_irqsave(&lp->lock, flags);
2337
2338 /* Ensure the adapter does not want to request an interrupt when */
2339 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2340 hp100_page(PERFORMANCE);
2341 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2342 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2343 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2344 OPTION_LSW);
2345 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2346 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2347
2348 if (lp->mode == 1) {
2349 /* Make sure BM bit is set... */
2350 hp100_page(HW_MAP);
2351 hp100_orb(HP100_BM_MASTER, BM);
2352 hp100_rxfill(dev);
2353 } else if (lp->mode == 2) {
2354 /* Enable memory mapping. Note: Don't do this when busmaster. */
2355 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2356 }
2357
2358 hp100_page(PERFORMANCE);
2359 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2360 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2361
2362 /* enable a few interrupts: */
2363 if (lp->mode == 1) { /* busmaster mode */
2364 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2365 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2366 /* HP100_RX_PACKET | */
2367 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2368 /* HP100_TX_PDA_ZERO | */
2369 HP100_TX_COMPLETE |
2370 /* HP100_MISC_ERROR | */
2371 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2372 } else {
2373 hp100_outw(HP100_RX_PACKET |
2374 HP100_RX_ERROR | HP100_SET_HB |
2375 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2376 }
2377
2378 /* Note : before hp100_set_multicast_list(), because it will play with
2379 * spinlock itself... Jean II */
2380 spin_unlock_irqrestore(&lp->lock, flags);
2381
2382 /* Enable MAC Tx and RX, set MAC modes, ... */
2383 hp100_set_multicast_list(dev);
2384}
2385
2386static void hp100_stop_interface(struct net_device *dev)
2387{
2388 struct hp100_private *lp = netdev_priv(dev);
2389 int ioaddr = dev->base_addr;
2390 u_int val;
2391
2392#ifdef HP100_DEBUG_B
2393 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2394 hp100_outw(0x4221, TRACE);
2395#endif
2396
2397 if (lp->mode == 1)
2398 hp100_BM_shutdown(dev);
2399 else {
2400 /* Note: MMAP_DIS will be reenabled by start_interface */
2401 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2402 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2403 OPTION_LSW);
2404 val = hp100_inw(OPTION_LSW);
2405
2406 hp100_page(MAC_CTRL);
2407 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2408
2409 if (!(val & HP100_HW_RST))
2410 return; /* If reset, imm. return ... */
2411 /* ... else: busy wait until idle */
2412 for (val = 0; val < 6000; val++)
2413 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2414 hp100_page(PERFORMANCE);
2415 return;
2416 }
2417 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2418 hp100_page(PERFORMANCE);
2419 }
2420}
2421
2422static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2423{
2424 int i;
2425 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2426
2427#ifdef HP100_DEBUG_B
2428 hp100_outw(0x4222, TRACE);
2429#endif
2430
2431 hp100_page(EEPROM_CTRL);
2432 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2433 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2434 for (i = 0; i < 10000; i++)
2435 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2436 return;
2437 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2438}
2439
2440/* Sense connection status.
2441 * return values: LAN_10 - Connected to 10Mbit/s network
2442 * LAN_100 - Connected to 100Mbit/s network
2443 * LAN_ERR - not connected or 100Mbit/s Hub down
2444 */
2445static int hp100_sense_lan(struct net_device *dev)
2446{
2447 int ioaddr = dev->base_addr;
2448 u_short val_VG, val_10;
2449 struct hp100_private *lp = netdev_priv(dev);
2450
2451#ifdef HP100_DEBUG_B
2452 hp100_outw(0x4223, TRACE);
2453#endif
2454
2455 hp100_page(MAC_CTRL);
2456 val_10 = hp100_inb(10_LAN_CFG_1);
2457 val_VG = hp100_inb(VG_LAN_CFG_1);
2458 hp100_page(PERFORMANCE);
2459#ifdef HP100_DEBUG
2460 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2461 dev->name, val_VG, val_10);
2462#endif
2463
2464 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2465 return HP100_LAN_10;
2466
2467 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2468 /*
2469 * This can be overriden by dos utility, so if this has no effect,
2470 * perhaps you need to download that utility from HP and set card
2471 * back to "auto detect".
2472 */
2473 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2474 hp100_page(MAC_CTRL);
2475 hp100_outb(val_10, 10_LAN_CFG_1);
2476 hp100_page(PERFORMANCE);
2477 return HP100_LAN_COAX;
2478 }
2479
2480 /* Those cards don't have a 100 Mbit connector */
2481 if ( !strcmp(lp->id, "HWP1920") ||
2482 (lp->pci_dev &&
2483 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2484 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2485 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2486 return HP100_LAN_ERR;
2487
2488 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2489 return HP100_LAN_100;
2490 return HP100_LAN_ERR;
2491}
2492
2493static int hp100_down_vg_link(struct net_device *dev)
2494{
2495 struct hp100_private *lp = netdev_priv(dev);
2496 int ioaddr = dev->base_addr;
2497 unsigned long time;
2498 long savelan, newlan;
2499
2500#ifdef HP100_DEBUG_B
2501 hp100_outw(0x4224, TRACE);
2502 printk("hp100: %s: down_vg_link\n", dev->name);
2503#endif
2504
2505 hp100_page(MAC_CTRL);
2506 time = jiffies + (HZ / 4);
2507 do {
2508 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2509 break;
2510 if (!in_interrupt())
2511 schedule_timeout_interruptible(1);
2512 } while (time_after(time, jiffies));
2513
2514 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2515 return 0;
2516
2517 /* Drop the VG Link by clearing the link up cmd and load addr. */
2518
2519 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2520 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2521
2522 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2523 time = jiffies + (HZ / 2);
2524 do {
2525 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2526 break;
2527 if (!in_interrupt())
2528 schedule_timeout_interruptible(1);
2529 } while (time_after(time, jiffies));
2530
2531#ifdef HP100_DEBUG
2532 if (time_after_eq(jiffies, time))
2533 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2534#endif
2535
2536 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2537 /* logout under traffic (even though all the status bits are cleared), */
2538 /* do this workaround to get the Rev 1 MAC in its idle state */
2539 if (lp->chip == HP100_CHIPID_LASSEN) {
2540 /* Reset VG MAC to insure it leaves the logoff state even if */
2541 /* the Hub is still emitting tones */
2542 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2543 udelay(1500); /* wait for >1ms */
2544 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2545 udelay(1500);
2546 }
2547
2548 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2549 /* to get the VG mac to full reset. This is not req.d with later chips */
2550 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2551 /* selected again! This will be left to the connect hub function to */
2552 /* perform if desired. */
2553 if (lp->chip == HP100_CHIPID_LASSEN) {
2554 /* Have to write to 10 and 100VG control registers simultaneously */
2555 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2556 newlan &= ~(HP100_VG_SEL << 16);
2557 newlan |= (HP100_DOT3_MAC) << 8;
2558 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2559 hp100_outl(newlan, 10_LAN_CFG_1);
2560
2561 /* Conditionally stall for 5sec on VG selected. */
2562 time = jiffies + (HZ * 5);
2563 do {
2564 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2565 break;
2566 if (!in_interrupt())
2567 schedule_timeout_interruptible(1);
2568 } while (time_after(time, jiffies));
2569
2570 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2571 hp100_outl(savelan, 10_LAN_CFG_1);
2572 }
2573
2574 time = jiffies + (3 * HZ); /* Timeout 3s */
2575 do {
2576 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2577 break;
2578 if (!in_interrupt())
2579 schedule_timeout_interruptible(1);
2580 } while (time_after(time, jiffies));
2581
2582 if (time_before_eq(time, jiffies)) {
2583#ifdef HP100_DEBUG
2584 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2585#endif
2586 return -EIO;
2587 }
2588
2589 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2590 do {
2591 if (!in_interrupt())
2592 schedule_timeout_interruptible(1);
2593 } while (time_after(time, jiffies));
2594
2595 return 0;
2596}
2597
2598static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2599{
2600 int ioaddr = dev->base_addr;
2601 struct hp100_private *lp = netdev_priv(dev);
2602 u_short val = 0;
2603 unsigned long time;
2604 int startst;
2605
2606#ifdef HP100_DEBUG_B
2607 hp100_outw(0x4225, TRACE);
2608 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2609#endif
2610
2611 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2612 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2613 * promiscuous mode change)
2614 */
2615 hp100_page(MAC_CTRL);
2616 startst = hp100_inb(VG_LAN_CFG_1);
2617 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2618#ifdef HP100_DEBUG_TRAINING
2619 printk("hp100: %s: Start training\n", dev->name);
2620#endif
2621
2622 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2623 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2624
2625 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2626 /* entry then temporarily put them into force 100Mbit mode */
2627 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2628 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2629
2630 /* Drop the VG link by zeroing Link Up Command and Load Address */
2631 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2632
2633#ifdef HP100_DEBUG_TRAINING
2634 printk("hp100: %s: Bring down the link\n", dev->name);
2635#endif
2636
2637 /* Wait for link to drop */
2638 time = jiffies + (HZ / 10);
2639 do {
2640 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2641 break;
2642 if (!in_interrupt())
2643 schedule_timeout_interruptible(1);
2644 } while (time_after(time, jiffies));
2645
2646 /* Start an addressed training and optionally request promiscuous port */
2647 if ((dev->flags) & IFF_PROMISC) {
2648 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2649 if (lp->chip == HP100_CHIPID_LASSEN)
2650 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2651 } else {
2652 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2653 /* For ETR parts we need to reset the prom. bit in the training
2654 * register, otherwise promiscious mode won't be disabled.
2655 */
2656 if (lp->chip == HP100_CHIPID_LASSEN) {
2657 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2658 }
2659 }
2660
2661 /* With ETR parts, frame format request bits can be set. */
2662 if (lp->chip == HP100_CHIPID_LASSEN)
2663 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2664
2665 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2666
2667 /* Note: Next wait could be omitted for Hood and earlier chips under */
2668 /* certain circumstances */
2669 /* TODO: check if hood/earlier and skip wait. */
2670
2671 /* Wait for either short timeout for VG tones or long for login */
2672 /* Wait for the card hardware to signalise link cable status ok... */
2673 hp100_page(MAC_CTRL);
2674 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2675 do {
2676 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2677 break;
2678 if (!in_interrupt())
2679 schedule_timeout_interruptible(1);
2680 } while (time_before(jiffies, time));
2681
2682 if (time_after_eq(jiffies, time)) {
2683#ifdef HP100_DEBUG_TRAINING
2684 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2685#endif
2686 } else {
2687#ifdef HP100_DEBUG_TRAINING
2688 printk
2689 ("hp100: %s: HUB tones detected. Trying to train.\n",
2690 dev->name);
2691#endif
2692
2693 time = jiffies + (2 * HZ); /* again a timeout */
2694 do {
2695 val = hp100_inb(VG_LAN_CFG_1);
2696 if ((val & (HP100_LINK_UP_ST))) {
2697#ifdef HP100_DEBUG_TRAINING
2698 printk("hp100: %s: Passed training.\n", dev->name);
2699#endif
2700 break;
2701 }
2702 if (!in_interrupt())
2703 schedule_timeout_interruptible(1);
2704 } while (time_after(time, jiffies));
2705 }
2706
2707 /* If LINK_UP_ST is set, then we are logged into the hub. */
2708 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2709#ifdef HP100_DEBUG_TRAINING
2710 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2711 if (lp->chip == HP100_CHIPID_LASSEN) {
2712 val = hp100_inw(TRAIN_ALLOW);
2713 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2714 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2715 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2716 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2717 }
2718#endif
2719 } else {
2720 /* If LINK_UP_ST is not set, login was not successful */
2721 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2722 if (lp->chip == HP100_CHIPID_LASSEN) {
2723 /* Check allowed Register to find out why there is a problem. */
2724 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2725#ifdef HP100_DEBUG_TRAINING
2726 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2727#endif
2728 if (val & HP100_MALLOW_ACCDENIED)
2729 printk("hp100: %s: HUB access denied.\n", dev->name);
2730 if (val & HP100_MALLOW_CONFIGURE)
2731 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2732 if (val & HP100_MALLOW_DUPADDR)
2733 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2734 }
2735 }
2736
2737 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2738 /* to auto-select mode */
2739
2740 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2741 hp100_page(MAC_CTRL);
2742 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2743 }
2744
2745 val = hp100_inb(VG_LAN_CFG_1);
2746
2747 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2748 hp100_page(PERFORMANCE);
2749 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2750
2751 if (val & HP100_LINK_UP_ST)
2752 return 0; /* login was ok */
2753 else {
2754 printk("hp100: %s: Training failed.\n", dev->name);
2755 hp100_down_vg_link(dev);
2756 return -EIO;
2757 }
2758 }
2759 /* no forced relogin & already link there->no training. */
2760 return -EIO;
2761}
2762
2763static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2764{
2765 int ioaddr = dev->base_addr;
2766 struct hp100_private *lp = netdev_priv(dev);
2767
2768#ifdef HP100_DEBUG_B
2769 hp100_outw(0x4226, TRACE);
2770 printk("hp100: %s: cascade_reset\n", dev->name);
2771#endif
2772
2773 if (enable) {
2774 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2775 if (lp->chip == HP100_CHIPID_LASSEN) {
2776 /* Lassen requires a PCI transmit fifo reset */
2777 hp100_page(HW_MAP);
2778 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2779 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2780 /* Wait for min. 300 ns */
2781 /* we can't use jiffies here, because it may be */
2782 /* that we have disabled the timer... */
2783 udelay(400);
2784 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2785 hp100_page(PERFORMANCE);
2786 }
2787 } else { /* bring out of reset */
2788 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2789 udelay(400);
2790 hp100_page(PERFORMANCE);
2791 }
2792}
2793
2794#ifdef HP100_DEBUG
2795void hp100_RegisterDump(struct net_device *dev)
2796{
2797 int ioaddr = dev->base_addr;
2798 int Page;
2799 int Register;
2800
2801 /* Dump common registers */
2802 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2803 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2804 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2805 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2806 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2807
2808 /* Dump paged registers */
2809 for (Page = 0; Page < 8; Page++) {
2810 /* Dump registers */
2811 printk("page: 0x%.2x\n", Page);
2812 outw(Page, ioaddr + 0x02);
2813 for (Register = 0x8; Register < 0x22; Register += 2) {
2814 /* Display Register contents except data port */
2815 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2816 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2817 }
2818 }
2819 }
2820 hp100_page(PERFORMANCE);
2821}
2822#endif
2823
2824
2825static void cleanup_dev(struct net_device *d)
2826{
2827 struct hp100_private *p = netdev_priv(d);
2828
2829 unregister_netdev(d);
2830 release_region(d->base_addr, HP100_REGION_SIZE);
2831
2832 if (p->mode == 1) /* busmaster */
2833 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2834 p->page_vaddr_algn,
2835 virt_to_whatever(d, p->page_vaddr_algn));
2836 if (p->mem_ptr_virt)
2837 iounmap(p->mem_ptr_virt);
2838
2839 free_netdev(d);
2840}
2841
2842#ifdef CONFIG_EISA
2843static int __init hp100_eisa_probe (struct device *gendev)
2844{
2845 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2846 struct eisa_device *edev = to_eisa_device(gendev);
2847 int err;
2848
2849 if (!dev)
2850 return -ENOMEM;
2851
2852 SET_NETDEV_DEV(dev, &edev->dev);
2853
2854 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2855 if (err)
2856 goto out1;
2857
2858#ifdef HP100_DEBUG
2859 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2860 dev->base_addr);
2861#endif
2862 dev_set_drvdata(gendev, dev);
2863 return 0;
2864 out1:
2865 free_netdev(dev);
2866 return err;
2867}
2868
2869static int __devexit hp100_eisa_remove (struct device *gendev)
2870{
2871 struct net_device *dev = dev_get_drvdata(gendev);
2872 cleanup_dev(dev);
2873 return 0;
2874}
2875
2876static struct eisa_driver hp100_eisa_driver = {
2877 .id_table = hp100_eisa_tbl,
2878 .driver = {
2879 .name = "hp100",
2880 .probe = hp100_eisa_probe,
2881 .remove = __devexit_p (hp100_eisa_remove),
2882 }
2883};
2884#endif
2885
2886#ifdef CONFIG_PCI
2887static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2888 const struct pci_device_id *ent)
2889{
2890 struct net_device *dev;
2891 int ioaddr;
2892 u_short pci_command;
2893 int err;
2894
2895 if (pci_enable_device(pdev))
2896 return -ENODEV;
2897
2898 dev = alloc_etherdev(sizeof(struct hp100_private));
2899 if (!dev) {
2900 err = -ENOMEM;
2901 goto out0;
2902 }
2903
2904 SET_NETDEV_DEV(dev, &pdev->dev);
2905
2906 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2907 if (!(pci_command & PCI_COMMAND_IO)) {
2908#ifdef HP100_DEBUG
2909 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2910#endif
2911 pci_command |= PCI_COMMAND_IO;
2912 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2913 }
2914
2915 if (!(pci_command & PCI_COMMAND_MASTER)) {
2916#ifdef HP100_DEBUG
2917 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2918#endif
2919 pci_command |= PCI_COMMAND_MASTER;
2920 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2921 }
2922
2923 ioaddr = pci_resource_start(pdev, 0);
2924 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2925 if (err)
2926 goto out1;
2927
2928#ifdef HP100_DEBUG
2929 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2930#endif
2931 pci_set_drvdata(pdev, dev);
2932 return 0;
2933 out1:
2934 free_netdev(dev);
2935 out0:
2936 pci_disable_device(pdev);
2937 return err;
2938}
2939
2940static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2941{
2942 struct net_device *dev = pci_get_drvdata(pdev);
2943
2944 cleanup_dev(dev);
2945 pci_disable_device(pdev);
2946}
2947
2948
2949static struct pci_driver hp100_pci_driver = {
2950 .name = "hp100",
2951 .id_table = hp100_pci_tbl,
2952 .probe = hp100_pci_probe,
2953 .remove = __devexit_p(hp100_pci_remove),
2954};
2955#endif
2956
2957/*
2958 * module section
2959 */
2960
2961MODULE_LICENSE("GPL");
2962MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, "
2963 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2964MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2965
2966/*
2967 * Note: to register three isa devices, use:
2968 * option hp100 hp100_port=0,0,0
2969 * to register one card at io 0x280 as eth239, use:
2970 * option hp100 hp100_port=0x280
2971 */
2972#if defined(MODULE) && defined(CONFIG_ISA)
2973#define HP100_DEVICES 5
2974/* Parameters set by insmod */
2975static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2976module_param_array(hp100_port, int, NULL, 0);
2977
2978/* List of devices */
2979static struct net_device *hp100_devlist[HP100_DEVICES];
2980
2981static int __init hp100_isa_init(void)
2982{
2983 struct net_device *dev;
2984 int i, err, cards = 0;
2985
2986 /* Don't autoprobe ISA bus */
2987 if (hp100_port[0] == 0)
2988 return -ENODEV;
2989
2990 /* Loop on all possible base addresses */
2991 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2992 dev = alloc_etherdev(sizeof(struct hp100_private));
2993 if (!dev) {
2994 while (cards > 0)
2995 cleanup_dev(hp100_devlist[--cards]);
2996
2997 return -ENOMEM;
2998 }
2999
3000 err = hp100_isa_probe(dev, hp100_port[i]);
3001 if (!err)
3002 hp100_devlist[cards++] = dev;
3003 else
3004 free_netdev(dev);
3005 }
3006
3007 return cards > 0 ? 0 : -ENODEV;
3008}
3009
3010static void hp100_isa_cleanup(void)
3011{
3012 int i;
3013
3014 for (i = 0; i < HP100_DEVICES; i++) {
3015 struct net_device *dev = hp100_devlist[i];
3016 if (dev)
3017 cleanup_dev(dev);
3018 }
3019}
3020#else
3021#define hp100_isa_init() (0)
3022#define hp100_isa_cleanup() do { } while(0)
3023#endif
3024
3025static int __init hp100_module_init(void)
3026{
3027 int err;
3028
3029 err = hp100_isa_init();
3030 if (err && err != -ENODEV)
3031 goto out;
3032#ifdef CONFIG_EISA
3033 err = eisa_driver_register(&hp100_eisa_driver);
3034 if (err && err != -ENODEV)
3035 goto out2;
3036#endif
3037#ifdef CONFIG_PCI
3038 err = pci_register_driver(&hp100_pci_driver);
3039 if (err && err != -ENODEV)
3040 goto out3;
3041#endif
3042 out:
3043 return err;
3044 out3:
3045#ifdef CONFIG_EISA
3046 eisa_driver_unregister (&hp100_eisa_driver);
3047 out2:
3048#endif
3049 hp100_isa_cleanup();
3050 goto out;
3051}
3052
3053
3054static void __exit hp100_module_exit(void)
3055{
3056 hp100_isa_cleanup();
3057#ifdef CONFIG_EISA
3058 eisa_driver_unregister (&hp100_eisa_driver);
3059#endif
3060#ifdef CONFIG_PCI
3061 pci_unregister_driver (&hp100_pci_driver);
3062#endif
3063}
3064
3065module_init(hp100_module_init)
3066module_exit(hp100_module_exit)
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3** hp100.c
4** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
5**
6** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 perex Exp perex $
7**
8** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
9** Extended for new busmaster capable chipsets by
10** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
11**
12** Maintained by: Jaroslav Kysela <perex@perex.cz>
13**
14** This driver has only been tested with
15** -- HP J2585B 10/100 Mbit/s PCI Busmaster
16** -- HP J2585A 10/100 Mbit/s PCI
17** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
18** -- HP J2973A 10 Mbit/s PCI 10base-T
19** -- HP J2573 10/100 ISA
20** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
21** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
22**
23** but it should also work with the other CASCADE based adapters.
24**
25** TODO:
26** - J2573 seems to hang sometimes when in shared memory mode.
27** - Mode for Priority TX
28** - Check PCI registers, performance might be improved?
29** - To reduce interrupt load in busmaster, one could switch off
30** the interrupts that are used to refill the queues whenever the
31** queues are filled up to more than a certain threshold.
32** - some updates for EISA version of card
33**
34**
35**
36** 1.57c -> 1.58
37** - used indent to change coding-style
38** - added KTI DP-200 EISA ID
39** - ioremap is also used for low (<1MB) memory (multi-architecture support)
40**
41** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
42** - release resources on failure in init_module
43**
44** 1.57 -> 1.57b - Jean II
45** - fix spinlocks, SMP is now working !
46**
47** 1.56 -> 1.57
48** - updates for new PCI interface for 2.1 kernels
49**
50** 1.55 -> 1.56
51** - removed printk in misc. interrupt and update statistics to allow
52** monitoring of card status
53** - timing changes in xmit routines, relogin to 100VG hub added when
54** driver does reset
55** - included fix for Compex FreedomLine PCI adapter
56**
57** 1.54 -> 1.55
58** - fixed bad initialization in init_module
59** - added Compex FreedomLine adapter
60** - some fixes in card initialization
61**
62** 1.53 -> 1.54
63** - added hardware multicast filter support (doesn't work)
64** - little changes in hp100_sense_lan routine
65** - added support for Coax and AUI (J2970)
66** - fix for multiple cards and hp100_mode parameter (insmod)
67** - fix for shared IRQ
68**
69** 1.52 -> 1.53
70** - fixed bug in multicast support
71**
72*/
73
74#define HP100_DEFAULT_PRIORITY_TX 0
75
76#undef HP100_DEBUG
77#undef HP100_DEBUG_B /* Trace */
78#undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
79
80#undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
81#undef HP100_DEBUG_TX
82#undef HP100_DEBUG_IRQ
83#undef HP100_DEBUG_RX
84
85#undef HP100_MULTICAST_FILTER /* Need to be debugged... */
86
87#include <linux/module.h>
88#include <linux/kernel.h>
89#include <linux/sched.h>
90#include <linux/string.h>
91#include <linux/errno.h>
92#include <linux/ioport.h>
93#include <linux/interrupt.h>
94#include <linux/eisa.h>
95#include <linux/pci.h>
96#include <linux/dma-mapping.h>
97#include <linux/spinlock.h>
98#include <linux/netdevice.h>
99#include <linux/etherdevice.h>
100#include <linux/skbuff.h>
101#include <linux/types.h>
102#include <linux/delay.h>
103#include <linux/init.h>
104#include <linux/bitops.h>
105#include <linux/jiffies.h>
106
107#include <asm/io.h>
108
109#include "hp100.h"
110
111/*
112 * defines
113 */
114
115#define HP100_BUS_ISA 0
116#define HP100_BUS_EISA 1
117#define HP100_BUS_PCI 2
118
119#define HP100_REGION_SIZE 0x20 /* for ioports */
120#define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
121
122#define HP100_MAX_PACKET_SIZE (1536+4)
123#define HP100_MIN_PACKET_SIZE 60
124
125#ifndef HP100_DEFAULT_RX_RATIO
126/* default - 75% onboard memory on the card are used for RX packets */
127#define HP100_DEFAULT_RX_RATIO 75
128#endif
129
130#ifndef HP100_DEFAULT_PRIORITY_TX
131/* default - don't enable transmit outgoing packets as priority */
132#define HP100_DEFAULT_PRIORITY_TX 0
133#endif
134
135/*
136 * structures
137 */
138
139struct hp100_private {
140 spinlock_t lock;
141 char id[HP100_SIG_LEN];
142 u_short chip;
143 u_short soft_model;
144 u_int memory_size;
145 u_int virt_memory_size;
146 u_short rx_ratio; /* 1 - 99 */
147 u_short priority_tx; /* != 0 - priority tx */
148 u_short mode; /* PIO, Shared Mem or Busmaster */
149 u_char bus;
150 struct pci_dev *pci_dev;
151 short mem_mapped; /* memory mapped access */
152 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
153 unsigned long mem_ptr_phys; /* physical memory mapped area */
154 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
155 int hub_status; /* was login to hub successful? */
156 u_char mac1_mode;
157 u_char mac2_mode;
158 u_char hash_bytes[8];
159
160 /* Rings for busmaster mode: */
161 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
162 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
163 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
164 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
165
166 hp100_ring_t rxring[MAX_RX_PDL];
167 hp100_ring_t txring[MAX_TX_PDL];
168
169 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
170 u_long whatever_offset; /* Offset to bus/phys/dma address */
171 int rxrcommit; /* # Rx PDLs committed to adapter */
172 int txrcommit; /* # Tx PDLs committed to adapter */
173};
174
175/*
176 * variables
177 */
178#ifdef CONFIG_ISA
179static const char *hp100_isa_tbl[] = {
180 "HWPF150", /* HP J2573 rev A */
181 "HWP1950", /* HP J2573 */
182};
183#endif
184
185static const struct eisa_device_id hp100_eisa_tbl[] = {
186 { "HWPF180" }, /* HP J2577 rev A */
187 { "HWP1920" }, /* HP 27248B */
188 { "HWP1940" }, /* HP J2577 */
189 { "HWP1990" }, /* HP J2577 */
190 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
191 { "CPX0401" }, /* FreedomLine 100/VG */
192 { "" } /* Mandatory final entry ! */
193};
194MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
195
196static const struct pci_device_id hp100_pci_tbl[] = {
197 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
198 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
199 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
200 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
201 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
202 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
203/* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
204 {} /* Terminating entry */
205};
206MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
207
208static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
209static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
210static int hp100_mode = 1;
211
212module_param(hp100_rx_ratio, int, 0);
213module_param(hp100_priority_tx, int, 0);
214module_param(hp100_mode, int, 0);
215
216/*
217 * prototypes
218 */
219
220static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
221 struct pci_dev *pci_dev);
222
223
224static int hp100_open(struct net_device *dev);
225static int hp100_close(struct net_device *dev);
226static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
227 struct net_device *dev);
228static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
229 struct net_device *dev);
230static void hp100_rx(struct net_device *dev);
231static struct net_device_stats *hp100_get_stats(struct net_device *dev);
232static void hp100_misc_interrupt(struct net_device *dev);
233static void hp100_update_stats(struct net_device *dev);
234static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
235static void hp100_set_multicast_list(struct net_device *dev);
236static irqreturn_t hp100_interrupt(int irq, void *dev_id);
237static void hp100_start_interface(struct net_device *dev);
238static void hp100_stop_interface(struct net_device *dev);
239static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
240static int hp100_sense_lan(struct net_device *dev);
241static int hp100_login_to_vg_hub(struct net_device *dev,
242 u_short force_relogin);
243static int hp100_down_vg_link(struct net_device *dev);
244static void hp100_cascade_reset(struct net_device *dev, u_short enable);
245static void hp100_BM_shutdown(struct net_device *dev);
246static void hp100_mmuinit(struct net_device *dev);
247static void hp100_init_pdls(struct net_device *dev);
248static int hp100_init_rxpdl(struct net_device *dev,
249 register hp100_ring_t * ringptr,
250 register u_int * pdlptr);
251static int hp100_init_txpdl(struct net_device *dev,
252 register hp100_ring_t * ringptr,
253 register u_int * pdlptr);
254static void hp100_rxfill(struct net_device *dev);
255static void hp100_hwinit(struct net_device *dev);
256static void hp100_clean_txring(struct net_device *dev);
257#ifdef HP100_DEBUG
258static void hp100_RegisterDump(struct net_device *dev);
259#endif
260
261/* Conversion to new PCI API :
262 * Convert an address in a kernel buffer to a bus/phys/dma address.
263 * This work *only* for memory fragments part of lp->page_vaddr,
264 * because it was properly DMA allocated via pci_alloc_consistent(),
265 * so we just need to "retrieve" the original mapping to bus/phys/dma
266 * address - Jean II */
267static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
268{
269 struct hp100_private *lp = netdev_priv(dev);
270 return ((u_long) ptr) + lp->whatever_offset;
271}
272
273static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
274{
275 return pci_map_single(lp->pci_dev, data,
276 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
277}
278
279/* TODO: This function should not really be needed in a good design... */
280static void wait(void)
281{
282 mdelay(1);
283}
284
285/*
286 * probe functions
287 * These functions should - if possible - avoid doing write operations
288 * since this could cause problems when the card is not installed.
289 */
290
291/*
292 * Read board id and convert to string.
293 * Effectively same code as decode_eisa_sig
294 */
295static const char *hp100_read_id(int ioaddr)
296{
297 int i;
298 static char str[HP100_SIG_LEN];
299 unsigned char sig[4], sum;
300 unsigned short rev;
301
302 hp100_page(ID_MAC_ADDR);
303 sum = 0;
304 for (i = 0; i < 4; i++) {
305 sig[i] = hp100_inb(BOARD_ID + i);
306 sum += sig[i];
307 }
308
309 sum += hp100_inb(BOARD_ID + i);
310 if (sum != 0xff)
311 return NULL; /* bad checksum */
312
313 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
314 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
315 str[2] = (sig[1] & 0x1f) + ('A' - 1);
316 rev = (sig[2] << 8) | sig[3];
317 sprintf(str + 3, "%04X", rev);
318
319 return str;
320}
321
322#ifdef CONFIG_ISA
323static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
324{
325 const char *sig;
326 int i;
327
328 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
329 goto err;
330
331 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
332 release_region(ioaddr, HP100_REGION_SIZE);
333 goto err;
334 }
335
336 sig = hp100_read_id(ioaddr);
337 release_region(ioaddr, HP100_REGION_SIZE);
338
339 if (sig == NULL)
340 goto err;
341
342 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
343 if (!strcmp(hp100_isa_tbl[i], sig))
344 break;
345
346 }
347
348 if (i < ARRAY_SIZE(hp100_isa_tbl))
349 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
350 err:
351 return -ENODEV;
352
353}
354/*
355 * Probe for ISA board.
356 * EISA and PCI are handled by device infrastructure.
357 */
358
359static int __init hp100_isa_probe(struct net_device *dev, int addr)
360{
361 int err = -ENODEV;
362
363 /* Probe for a specific ISA address */
364 if (addr > 0xff && addr < 0x400)
365 err = hp100_isa_probe1(dev, addr);
366
367 else if (addr != 0)
368 err = -ENXIO;
369
370 else {
371 /* Probe all ISA possible port regions */
372 for (addr = 0x100; addr < 0x400; addr += 0x20) {
373 err = hp100_isa_probe1(dev, addr);
374 if (!err)
375 break;
376 }
377 }
378 return err;
379}
380#endif /* CONFIG_ISA */
381
382#if !defined(MODULE) && defined(CONFIG_ISA)
383struct net_device * __init hp100_probe(int unit)
384{
385 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
386 int err;
387
388 if (!dev)
389 return ERR_PTR(-ENODEV);
390
391#ifdef HP100_DEBUG_B
392 hp100_outw(0x4200, TRACE);
393 printk("hp100: %s: probe\n", dev->name);
394#endif
395
396 if (unit >= 0) {
397 sprintf(dev->name, "eth%d", unit);
398 netdev_boot_setup_check(dev);
399 }
400
401 err = hp100_isa_probe(dev, dev->base_addr);
402 if (err)
403 goto out;
404
405 return dev;
406 out:
407 free_netdev(dev);
408 return ERR_PTR(err);
409}
410#endif /* !MODULE && CONFIG_ISA */
411
412static const struct net_device_ops hp100_bm_netdev_ops = {
413 .ndo_open = hp100_open,
414 .ndo_stop = hp100_close,
415 .ndo_start_xmit = hp100_start_xmit_bm,
416 .ndo_get_stats = hp100_get_stats,
417 .ndo_set_rx_mode = hp100_set_multicast_list,
418 .ndo_set_mac_address = eth_mac_addr,
419 .ndo_validate_addr = eth_validate_addr,
420};
421
422static const struct net_device_ops hp100_netdev_ops = {
423 .ndo_open = hp100_open,
424 .ndo_stop = hp100_close,
425 .ndo_start_xmit = hp100_start_xmit,
426 .ndo_get_stats = hp100_get_stats,
427 .ndo_set_rx_mode = hp100_set_multicast_list,
428 .ndo_set_mac_address = eth_mac_addr,
429 .ndo_validate_addr = eth_validate_addr,
430};
431
432static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
433 struct pci_dev *pci_dev)
434{
435 int i;
436 int err = -ENODEV;
437 const char *eid;
438 u_int chip;
439 u_char uc;
440 u_int memory_size = 0, virt_memory_size = 0;
441 u_short local_mode, lsw;
442 short mem_mapped;
443 unsigned long mem_ptr_phys;
444 void __iomem *mem_ptr_virt;
445 struct hp100_private *lp;
446
447#ifdef HP100_DEBUG_B
448 hp100_outw(0x4201, TRACE);
449 printk("hp100: %s: probe1\n", dev->name);
450#endif
451
452 /* memory region for programmed i/o */
453 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
454 goto out1;
455
456 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
457 goto out2;
458
459 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
460#ifdef HP100_DEBUG
461 if (chip == HP100_CHIPID_SHASTA)
462 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
463 else if (chip == HP100_CHIPID_RAINIER)
464 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
465 else if (chip == HP100_CHIPID_LASSEN)
466 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
467 else
468 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
469#endif
470
471 dev->base_addr = ioaddr;
472
473 eid = hp100_read_id(ioaddr);
474 if (eid == NULL) { /* bad checksum? */
475 printk(KERN_WARNING "%s: bad ID checksum at base port 0x%x\n",
476 __func__, ioaddr);
477 goto out2;
478 }
479
480 hp100_page(ID_MAC_ADDR);
481 for (i = uc = 0; i < 7; i++)
482 uc += hp100_inb(LAN_ADDR + i);
483 if (uc != 0xff) {
484 printk(KERN_WARNING
485 "%s: bad lan address checksum at port 0x%x)\n",
486 __func__, ioaddr);
487 err = -EIO;
488 goto out2;
489 }
490
491 /* Make sure, that all registers are correctly updated... */
492
493 hp100_load_eeprom(dev, ioaddr);
494 wait();
495
496 /*
497 * Determine driver operation mode
498 *
499 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
500 * force driver modes:
501 * hp100_mode=1 -> default, use busmaster mode if configured.
502 * hp100_mode=2 -> enable shared memory mode
503 * hp100_mode=3 -> force use of i/o mapped mode.
504 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
505 */
506
507 /*
508 * LSW values:
509 * 0x2278 -> J2585B, PnP shared memory mode
510 * 0x2270 -> J2585B, shared memory mode, 0xdc000
511 * 0xa23c -> J2585B, I/O mapped mode
512 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
513 * 0x2220 -> EISA HP, I/O (Shasta Chip)
514 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
515 */
516
517#if 0
518 local_mode = 0x2270;
519 hp100_outw(0xfefe, OPTION_LSW);
520 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
521#endif
522
523 /* hp100_mode value maybe used in future by another card */
524 local_mode = hp100_mode;
525 if (local_mode < 1 || local_mode > 4)
526 local_mode = 1; /* default */
527#ifdef HP100_DEBUG
528 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
529 hp100_inw(OPTION_LSW));
530#endif
531
532 if (local_mode == 3) {
533 hp100_outw(HP100_MEM_EN | HP100_RESET_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: IO mapped mode forced.\n");
537 } else if (local_mode == 2) {
538 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
539 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
540 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
541 printk("hp100: Shared memory mode requested.\n");
542 } else if (local_mode == 4) {
543 if (chip == HP100_CHIPID_LASSEN) {
544 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
545 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
546 printk("hp100: Busmaster mode requested.\n");
547 }
548 local_mode = 1;
549 }
550
551 if (local_mode == 1) { /* default behaviour */
552 lsw = hp100_inw(OPTION_LSW);
553
554 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
555 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
556#ifdef HP100_DEBUG
557 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
558#endif
559 local_mode = 3;
560 } else if (chip == HP100_CHIPID_LASSEN &&
561 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
562 /* Conversion to new PCI API :
563 * I don't have the doc, but I assume that the card
564 * can map the full 32bit address space.
565 * Also, we can have EISA Busmaster cards (not tested),
566 * so beware !!! - Jean II */
567 if((bus == HP100_BUS_PCI) &&
568 (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)))) {
569 /* Gracefully fallback to shared memory */
570 goto busmasterfail;
571 }
572 printk("hp100: Busmaster mode enabled.\n");
573 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
574 } else {
575 busmasterfail:
576#ifdef HP100_DEBUG
577 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
578 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
579#endif
580 /* In this case, try shared memory mode */
581 local_mode = 2;
582 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
583 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
584 }
585 }
586#ifdef HP100_DEBUG
587 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
588#endif
589
590 /* Check for shared memory on the card, eventually remap it */
591 hp100_page(HW_MAP);
592 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
593 mem_ptr_phys = 0UL;
594 mem_ptr_virt = NULL;
595 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
596 virt_memory_size = 0;
597
598 /* For memory mapped or busmaster mode, we want the memory address */
599 if (mem_mapped || (local_mode == 1)) {
600 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
601 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
602
603 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
604 printk("hp100: Can only use programmed i/o mode.\n");
605 mem_ptr_phys = 0;
606 mem_mapped = 0;
607 local_mode = 3; /* Use programmed i/o */
608 }
609
610 /* We do not need access to shared memory in busmaster mode */
611 /* However in slave mode we need to remap high (>1GB) card memory */
612 if (local_mode != 1) { /* = not busmaster */
613 /* We try with smaller memory sizes, if ioremap fails */
614 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
615 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
616#ifdef HP100_DEBUG
617 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
618#endif
619 } else {
620#ifdef HP100_DEBUG
621 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);
622#endif
623 break;
624 }
625 }
626
627 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
628 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
629 local_mode = 3;
630 virt_memory_size = 0;
631 }
632 }
633 }
634
635 if (local_mode == 3) { /* io mapped forced */
636 mem_mapped = 0;
637 mem_ptr_phys = 0;
638 mem_ptr_virt = NULL;
639 printk("hp100: Using (slow) programmed i/o mode.\n");
640 }
641
642 /* Initialise the "private" data structure for this card. */
643 lp = netdev_priv(dev);
644
645 spin_lock_init(&lp->lock);
646 strlcpy(lp->id, eid, HP100_SIG_LEN);
647 lp->chip = chip;
648 lp->mode = local_mode;
649 lp->bus = bus;
650 lp->pci_dev = pci_dev;
651 lp->priority_tx = hp100_priority_tx;
652 lp->rx_ratio = hp100_rx_ratio;
653 lp->mem_ptr_phys = mem_ptr_phys;
654 lp->mem_ptr_virt = mem_ptr_virt;
655 hp100_page(ID_MAC_ADDR);
656 lp->soft_model = hp100_inb(SOFT_MODEL);
657 lp->mac1_mode = HP100_MAC1MODE3;
658 lp->mac2_mode = HP100_MAC2MODE3;
659 memset(&lp->hash_bytes, 0x00, 8);
660
661 dev->base_addr = ioaddr;
662
663 lp->memory_size = memory_size;
664 lp->virt_memory_size = virt_memory_size;
665 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
666
667 if (lp->mode == 1) /* busmaster */
668 dev->netdev_ops = &hp100_bm_netdev_ops;
669 else
670 dev->netdev_ops = &hp100_netdev_ops;
671
672 /* Ask the card for which IRQ line it is configured */
673 if (bus == HP100_BUS_PCI) {
674 dev->irq = pci_dev->irq;
675 } else {
676 hp100_page(HW_MAP);
677 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
678 if (dev->irq == 2)
679 dev->irq = 9;
680 }
681
682 if (lp->mode == 1) /* busmaster */
683 dev->dma = 4;
684
685 /* Ask the card for its MAC address and store it for later use. */
686 hp100_page(ID_MAC_ADDR);
687 for (i = uc = 0; i < 6; i++)
688 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
689
690 /* Reset statistics (counters) */
691 hp100_clear_stats(lp, ioaddr);
692
693 /* If busmaster mode is wanted, a dma-capable memory area is needed for
694 * the rx and tx PDLs
695 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
696 * needed for the allocation of the memory area.
697 */
698
699 /* TODO: We do not need this with old cards, where PDLs are stored
700 * in the cards shared memory area. But currently, busmaster has been
701 * implemented/tested only with the lassen chip anyway... */
702 if (lp->mode == 1) { /* busmaster */
703 dma_addr_t page_baddr;
704 /* Get physically continuous memory for TX & RX PDLs */
705 /* Conversion to new PCI API :
706 * Pages are always aligned and zeroed, no need to it ourself.
707 * Doc says should be OK for EISA bus as well - Jean II */
708 lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr);
709 if (!lp->page_vaddr_algn) {
710 err = -ENOMEM;
711 goto out_mem_ptr;
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. */
724 /* (I'm not really sure if it's a good idea to do this during probing, but
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
777 err = register_netdev(dev);
778 if (err)
779 goto out3;
780
781 return 0;
782out3:
783 if (local_mode == 1)
784 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
785 lp->page_vaddr_algn,
786 virt_to_whatever(dev, lp->page_vaddr_algn));
787out_mem_ptr:
788 if (mem_ptr_virt)
789 iounmap(mem_ptr_virt);
790out2:
791 release_region(ioaddr, HP100_REGION_SIZE);
792out1:
793 return err;
794}
795
796/* This procedure puts the card into a stable init state */
797static void hp100_hwinit(struct net_device *dev)
798{
799 int ioaddr = dev->base_addr;
800 struct hp100_private *lp = netdev_priv(dev);
801
802#ifdef HP100_DEBUG_B
803 hp100_outw(0x4202, TRACE);
804 printk("hp100: %s: hwinit\n", dev->name);
805#endif
806
807 /* Initialise the card. -------------------------------------------- */
808
809 /* Clear all pending Ints and disable Ints */
810 hp100_page(PERFORMANCE);
811 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
812 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
813
814 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
815 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
816
817 if (lp->mode == 1) {
818 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
819 wait();
820 } else {
821 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
822 hp100_cascade_reset(dev, 1);
823 hp100_page(MAC_CTRL);
824 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
825 }
826
827 /* Initiate EEPROM reload */
828 hp100_load_eeprom(dev, 0);
829
830 wait();
831
832 /* Go into reset again. */
833 hp100_cascade_reset(dev, 1);
834
835 /* Set Option Registers to a safe state */
836 hp100_outw(HP100_DEBUG_EN |
837 HP100_RX_HDR |
838 HP100_EE_EN |
839 HP100_BM_WRITE |
840 HP100_BM_READ | HP100_RESET_HB |
841 HP100_FAKE_INT |
842 HP100_INT_EN |
843 HP100_MEM_EN |
844 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
845
846 hp100_outw(HP100_TRI_INT |
847 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
848
849 hp100_outb(HP100_PRIORITY_TX |
850 HP100_ADV_NXT_PKT |
851 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
852
853 /* TODO: Configure MMU for Ram Test. */
854 /* TODO: Ram Test. */
855
856 /* Re-check if adapter is still at same i/o location */
857 /* (If the base i/o in eeprom has been changed but the */
858 /* registers had not been changed, a reload of the eeprom */
859 /* would move the adapter to the address stored in eeprom */
860
861 /* TODO: Code to implement. */
862
863 /* Until here it was code from HWdiscover procedure. */
864 /* Next comes code from mmuinit procedure of SCO BM driver which is
865 * called from HWconfigure in the SCO driver. */
866
867 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
868 * multicast filter...
869 */
870 hp100_mmuinit(dev);
871
872 /* We don't turn the interrupts on here - this is done by start_interface. */
873 wait(); /* TODO: Do we really need this? */
874
875 /* Enable Hardware (e.g. unreset) */
876 hp100_cascade_reset(dev, 0);
877
878 /* ------- initialisation complete ----------- */
879
880 /* Finally try to log in the Hub if there may be a VG connection. */
881 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
882 hp100_login_to_vg_hub(dev, 0); /* relogin */
883
884}
885
886
887/*
888 * mmuinit - Reinitialise Cascade MMU and MAC settings.
889 * Note: Must already be in reset and leaves card in reset.
890 */
891static void hp100_mmuinit(struct net_device *dev)
892{
893 int ioaddr = dev->base_addr;
894 struct hp100_private *lp = netdev_priv(dev);
895 int i;
896
897#ifdef HP100_DEBUG_B
898 hp100_outw(0x4203, TRACE);
899 printk("hp100: %s: mmuinit\n", dev->name);
900#endif
901
902#ifdef HP100_DEBUG
903 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
904 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
905 return;
906 }
907#endif
908
909 /* Make sure IRQs are masked off and ack'ed. */
910 hp100_page(PERFORMANCE);
911 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
912 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
913
914 /*
915 * Enable Hardware
916 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
917 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
918 * - Clear Priority, Advance Pkt and Xmit Cmd
919 */
920
921 hp100_outw(HP100_DEBUG_EN |
922 HP100_RX_HDR |
923 HP100_EE_EN | HP100_RESET_HB |
924 HP100_IO_EN |
925 HP100_FAKE_INT |
926 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
927
928 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
929
930 if (lp->mode == 1) { /* busmaster */
931 hp100_outw(HP100_BM_WRITE |
932 HP100_BM_READ |
933 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
934 } else if (lp->mode == 2) { /* memory mapped */
935 hp100_outw(HP100_BM_WRITE |
936 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
937 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
938 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
939 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
940 } else if (lp->mode == 3) { /* i/o mapped mode */
941 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
942 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
943 }
944
945 hp100_page(HW_MAP);
946 hp100_outb(0, EARLYRXCFG);
947 hp100_outw(0, EARLYTXCFG);
948
949 /*
950 * Enable Bus Master mode
951 */
952 if (lp->mode == 1) { /* busmaster */
953 /* Experimental: Set some PCI configuration bits */
954 hp100_page(HW_MAP);
955 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
956 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
957
958 /* PCI Bus failures should result in a Misc. Interrupt */
959 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
960
961 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
962 hp100_page(HW_MAP);
963 /* Use Burst Mode and switch on PAGE_CK */
964 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
965 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
966 hp100_orb(HP100_BM_PAGE_CK, BM);
967 hp100_orb(HP100_BM_MASTER, BM);
968 } else { /* not busmaster */
969
970 hp100_page(HW_MAP);
971 hp100_andb(~HP100_BM_MASTER, BM);
972 }
973
974 /*
975 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
976 */
977 hp100_page(MMU_CFG);
978 if (lp->mode == 1) { /* only needed for Busmaster */
979 int xmit_stop, recv_stop;
980
981 if ((lp->chip == HP100_CHIPID_RAINIER) ||
982 (lp->chip == HP100_CHIPID_SHASTA)) {
983 int pdl_stop;
984
985 /*
986 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
987 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
988 * to the next higher 1k boundary) bytes for the rx-pdl's
989 * Note: For non-etr chips the transmit stop register must be
990 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
991 */
992 pdl_stop = lp->memory_size;
993 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
994 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
995 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
996#ifdef HP100_DEBUG_BM
997 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
998#endif
999 } else {
1000 /* ETR chip (Lassen) in busmaster mode */
1001 xmit_stop = (lp->memory_size) - 1;
1002 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1003 }
1004
1005 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1006 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1007#ifdef HP100_DEBUG_BM
1008 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1009 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1010#endif
1011 } else {
1012 /* Slave modes (memory mapped and programmed io) */
1013 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1014 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1015#ifdef HP100_DEBUG
1016 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1017 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1018#endif
1019 }
1020
1021 /* Write MAC address into page 1 */
1022 hp100_page(MAC_ADDRESS);
1023 for (i = 0; i < 6; i++)
1024 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1025
1026 /* Zero the multicast hash registers */
1027 for (i = 0; i < 8; i++)
1028 hp100_outb(0x0, HASH_BYTE0 + i);
1029
1030 /* Set up MAC defaults */
1031 hp100_page(MAC_CTRL);
1032
1033 /* Go to LAN Page and zero all filter bits */
1034 /* Zero accept error, accept multicast, accept broadcast and accept */
1035 /* all directed packet bits */
1036 hp100_andb(~(HP100_RX_EN |
1037 HP100_TX_EN |
1038 HP100_ACC_ERRORED |
1039 HP100_ACC_MC |
1040 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1041
1042 hp100_outb(0x00, MAC_CFG_2);
1043
1044 /* Zero the frame format bit. This works around a training bug in the */
1045 /* new hubs. */
1046 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1047
1048 if (lp->priority_tx)
1049 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1050 else
1051 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1052
1053 hp100_outb(HP100_ADV_NXT_PKT |
1054 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1055
1056 /* If busmaster, initialize the PDLs */
1057 if (lp->mode == 1)
1058 hp100_init_pdls(dev);
1059
1060 /* Go to performance page and initialize isr and imr registers */
1061 hp100_page(PERFORMANCE);
1062 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1063 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1064}
1065
1066/*
1067 * open/close functions
1068 */
1069
1070static int hp100_open(struct net_device *dev)
1071{
1072 struct hp100_private *lp = netdev_priv(dev);
1073#ifdef HP100_DEBUG_B
1074 int ioaddr = dev->base_addr;
1075#endif
1076
1077#ifdef HP100_DEBUG_B
1078 hp100_outw(0x4204, TRACE);
1079 printk("hp100: %s: open\n", dev->name);
1080#endif
1081
1082 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1083 if (request_irq(dev->irq, hp100_interrupt,
1084 lp->bus == HP100_BUS_PCI || lp->bus ==
1085 HP100_BUS_EISA ? IRQF_SHARED : 0,
1086 dev->name, dev)) {
1087 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1088 return -EAGAIN;
1089 }
1090
1091 netif_trans_update(dev); /* prevent tx timeout */
1092 netif_start_queue(dev);
1093
1094 lp->lan_type = hp100_sense_lan(dev);
1095 lp->mac1_mode = HP100_MAC1MODE3;
1096 lp->mac2_mode = HP100_MAC2MODE3;
1097 memset(&lp->hash_bytes, 0x00, 8);
1098
1099 hp100_stop_interface(dev);
1100
1101 hp100_hwinit(dev);
1102
1103 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1104
1105 return 0;
1106}
1107
1108/* The close function is called when the interface is to be brought down */
1109static int hp100_close(struct net_device *dev)
1110{
1111 int ioaddr = dev->base_addr;
1112 struct hp100_private *lp = netdev_priv(dev);
1113
1114#ifdef HP100_DEBUG_B
1115 hp100_outw(0x4205, TRACE);
1116 printk("hp100: %s: close\n", dev->name);
1117#endif
1118
1119 hp100_page(PERFORMANCE);
1120 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1121
1122 hp100_stop_interface(dev);
1123
1124 if (lp->lan_type == HP100_LAN_100)
1125 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1126
1127 netif_stop_queue(dev);
1128
1129 free_irq(dev->irq, dev);
1130
1131#ifdef HP100_DEBUG
1132 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1133 hp100_inw(OPTION_LSW));
1134#endif
1135
1136 return 0;
1137}
1138
1139
1140/*
1141 * Configure the PDL Rx rings and LAN
1142 */
1143static void hp100_init_pdls(struct net_device *dev)
1144{
1145 struct hp100_private *lp = netdev_priv(dev);
1146 hp100_ring_t *ringptr;
1147 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1148 int i;
1149
1150#ifdef HP100_DEBUG_B
1151 int ioaddr = dev->base_addr;
1152#endif
1153
1154#ifdef HP100_DEBUG_B
1155 hp100_outw(0x4206, TRACE);
1156 printk("hp100: %s: init pdls\n", dev->name);
1157#endif
1158
1159 if (!lp->page_vaddr_algn)
1160 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1161 else {
1162 /* pageptr shall point into the DMA accessible memory region */
1163 /* we use this pointer to status the upper limit of allocated */
1164 /* memory in the allocated page. */
1165 /* note: align the pointers to the pci cache line size */
1166 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1167 pageptr = lp->page_vaddr_algn;
1168
1169 lp->rxrcommit = 0;
1170 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1171
1172 /* Initialise Rx Ring */
1173 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1174 lp->rxring[i].next = ringptr;
1175 ringptr = &(lp->rxring[i]);
1176 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1177 }
1178
1179 /* Initialise Tx Ring */
1180 lp->txrcommit = 0;
1181 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1182 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1183 lp->txring[i].next = ringptr;
1184 ringptr = &(lp->txring[i]);
1185 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1186 }
1187 }
1188}
1189
1190
1191/* These functions "format" the entries in the pdl structure */
1192/* They return how much memory the fragments need. */
1193static int hp100_init_rxpdl(struct net_device *dev,
1194 register hp100_ring_t * ringptr,
1195 register u32 * pdlptr)
1196{
1197 /* pdlptr is starting address for this pdl */
1198
1199 if (0 != (((unsigned long) pdlptr) & 0xf))
1200 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1201 dev->name, (unsigned long) pdlptr);
1202
1203 ringptr->pdl = pdlptr + 1;
1204 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1205 ringptr->skb = NULL;
1206
1207 /*
1208 * Write address and length of first PDL Fragment (which is used for
1209 * storing the RX-Header
1210 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1211 * store this information. (PDH is at offset 0x04)
1212 */
1213 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1214
1215 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1216 *(pdlptr + 3) = 4; /* Length Frag 1 */
1217
1218 return roundup(MAX_RX_FRAG * 2 + 2, 4);
1219}
1220
1221
1222static int hp100_init_txpdl(struct net_device *dev,
1223 register hp100_ring_t * ringptr,
1224 register u32 * pdlptr)
1225{
1226 if (0 != (((unsigned long) pdlptr) & 0xf))
1227 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1228
1229 ringptr->pdl = pdlptr; /* +1; */
1230 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1231 ringptr->skb = NULL;
1232
1233 return roundup(MAX_TX_FRAG * 2 + 2, 4);
1234}
1235
1236/*
1237 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1238 * for possible odd word alignment rounding up to next dword and set PDL
1239 * address for fragment#2
1240 * Returns: 0 if unable to allocate skb_buff
1241 * 1 if successful
1242 */
1243static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1244 struct net_device *dev)
1245{
1246#ifdef HP100_DEBUG_B
1247 int ioaddr = dev->base_addr;
1248#endif
1249#ifdef HP100_DEBUG_BM
1250 u_int *p;
1251#endif
1252
1253#ifdef HP100_DEBUG_B
1254 hp100_outw(0x4207, TRACE);
1255 printk("hp100: %s: build rx pdl\n", dev->name);
1256#endif
1257
1258 /* Allocate skb buffer of maximum size */
1259 /* Note: This depends on the alloc_skb functions allocating more
1260 * space than requested, i.e. aligning to 16bytes */
1261
1262 ringptr->skb = netdev_alloc_skb(dev, roundup(MAX_ETHER_SIZE + 2, 4));
1263
1264 if (NULL != ringptr->skb) {
1265 /*
1266 * Reserve 2 bytes at the head of the buffer to land the IP header
1267 * on a long word boundary (According to the Network Driver section
1268 * in the Linux KHG, this should help to increase performance.)
1269 */
1270 skb_reserve(ringptr->skb, 2);
1271
1272 ringptr->skb->data = 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
1276 * (receive header). Its PDL entries are set up by init_rxpdl. So
1277 * here we only have to set up the PDL fragment entries for the data
1278 * part. Those 4 bytes will be stored in the DMA memory region
1279 * directly before the PDL.
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 roundup(MAX_ETHER_SIZE + 2, 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 */
1291 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
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,
1412 * wait for no Rx PDAs or no Rx packets on card.
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
1428 * available in the Tx region of the card.
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
1467/*
1468 * transmit functions
1469 */
1470
1471/* tx function for busmaster mode */
1472static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
1473 struct net_device *dev)
1474{
1475 unsigned long flags;
1476 int i, ok_flag;
1477 int ioaddr = dev->base_addr;
1478 struct hp100_private *lp = netdev_priv(dev);
1479 hp100_ring_t *ringptr;
1480
1481#ifdef HP100_DEBUG_B
1482 hp100_outw(0x4210, TRACE);
1483 printk("hp100: %s: start_xmit_bm\n", dev->name);
1484#endif
1485 if (skb->len <= 0)
1486 goto drop;
1487
1488 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1489 return NETDEV_TX_OK;
1490
1491 /* Get Tx ring tail pointer */
1492 if (lp->txrtail->next == lp->txrhead) {
1493 /* No memory. */
1494#ifdef HP100_DEBUG
1495 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1496#endif
1497 /* not waited long enough since last tx? */
1498 if (time_before(jiffies, dev_trans_start(dev) + HZ))
1499 goto drop;
1500
1501 if (hp100_check_lan(dev))
1502 goto drop;
1503
1504 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1505 /* we have a 100Mb/s adapter but it isn't connected to hub */
1506 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1507 hp100_stop_interface(dev);
1508 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1509 hp100_start_interface(dev);
1510 } else {
1511 spin_lock_irqsave(&lp->lock, flags);
1512 hp100_ints_off(); /* Useful ? Jean II */
1513 i = hp100_sense_lan(dev);
1514 hp100_ints_on();
1515 spin_unlock_irqrestore(&lp->lock, flags);
1516 if (i == HP100_LAN_ERR)
1517 printk("hp100: %s: link down detected\n", dev->name);
1518 else if (lp->lan_type != i) { /* cable change! */
1519 /* it's very hard - all network settings must be changed!!! */
1520 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1521 lp->lan_type = i;
1522 hp100_stop_interface(dev);
1523 if (lp->lan_type == HP100_LAN_100)
1524 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1525 hp100_start_interface(dev);
1526 } else {
1527 printk("hp100: %s: interface reset\n", dev->name);
1528 hp100_stop_interface(dev);
1529 if (lp->lan_type == HP100_LAN_100)
1530 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1531 hp100_start_interface(dev);
1532 }
1533 }
1534
1535 goto drop;
1536 }
1537
1538 /*
1539 * we have to turn int's off before modifying this, otherwise
1540 * a tx_pdl_cleanup could occur at the same time
1541 */
1542 spin_lock_irqsave(&lp->lock, flags);
1543 ringptr = lp->txrtail;
1544 lp->txrtail = ringptr->next;
1545
1546 /* Check whether packet has minimal packet size */
1547 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1548 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1549
1550 ringptr->skb = skb;
1551 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1552 if (lp->chip == HP100_CHIPID_SHASTA) {
1553 /* TODO:Could someone who has the EISA card please check if this works? */
1554 ringptr->pdl[2] = i;
1555 } else { /* Lassen */
1556 /* In the PDL, don't use the padded size but the real packet size: */
1557 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1558 }
1559 /* Conversion to new PCI API : map skbuf data to PCI bus.
1560 * Doc says it's OK for EISA as well - Jean II */
1561 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1562
1563 /* Hand this PDL to the card. */
1564 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1565
1566 lp->txrcommit++;
1567
1568 dev->stats.tx_packets++;
1569 dev->stats.tx_bytes += skb->len;
1570
1571 spin_unlock_irqrestore(&lp->lock, flags);
1572
1573 return NETDEV_TX_OK;
1574
1575drop:
1576 dev_kfree_skb(skb);
1577 return NETDEV_TX_OK;
1578}
1579
1580
1581/* clean_txring checks if packets have been sent by the card by reading
1582 * the TX_PDL register from the performance page and comparing it to the
1583 * number of committed packets. It then frees the skb's of the packets that
1584 * obviously have been sent to the network.
1585 *
1586 * Needs the PERFORMANCE page selected.
1587 */
1588static void hp100_clean_txring(struct net_device *dev)
1589{
1590 struct hp100_private *lp = netdev_priv(dev);
1591 int ioaddr = dev->base_addr;
1592 int donecount;
1593
1594#ifdef HP100_DEBUG_B
1595 hp100_outw(0x4211, TRACE);
1596 printk("hp100: %s: clean txring\n", dev->name);
1597#endif
1598
1599 /* How many PDLs have been transmitted? */
1600 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1601
1602#ifdef HP100_DEBUG
1603 if (donecount > MAX_TX_PDL)
1604 printk("hp100: %s: Warning: More PDLs transmitted than committed to card???\n", dev->name);
1605#endif
1606
1607 for (; 0 != donecount; donecount--) {
1608#ifdef HP100_DEBUG_BM
1609 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1610 dev->name, (u_int) lp->txrhead->skb->data,
1611 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1612#endif
1613 /* Conversion to new PCI API : NOP */
1614 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1615 dev_consume_skb_any(lp->txrhead->skb);
1616 lp->txrhead->skb = NULL;
1617 lp->txrhead = lp->txrhead->next;
1618 lp->txrcommit--;
1619 }
1620}
1621
1622/* tx function for slave modes */
1623static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
1624 struct net_device *dev)
1625{
1626 unsigned long flags;
1627 int i, ok_flag;
1628 int ioaddr = dev->base_addr;
1629 u_short val;
1630 struct hp100_private *lp = netdev_priv(dev);
1631
1632#ifdef HP100_DEBUG_B
1633 hp100_outw(0x4212, TRACE);
1634 printk("hp100: %s: start_xmit\n", dev->name);
1635#endif
1636 if (skb->len <= 0)
1637 goto drop;
1638
1639 if (hp100_check_lan(dev))
1640 goto drop;
1641
1642 /* If there is not enough free memory on the card... */
1643 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1644 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1645#ifdef HP100_DEBUG
1646 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1647#endif
1648 /* not waited long enough since last failed tx try? */
1649 if (time_before(jiffies, dev_trans_start(dev) + HZ)) {
1650#ifdef HP100_DEBUG
1651 printk("hp100: %s: trans_start timing problem\n",
1652 dev->name);
1653#endif
1654 goto drop;
1655 }
1656 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1657 /* we have a 100Mb/s adapter but it isn't connected to hub */
1658 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1659 hp100_stop_interface(dev);
1660 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1661 hp100_start_interface(dev);
1662 } else {
1663 spin_lock_irqsave(&lp->lock, flags);
1664 hp100_ints_off(); /* Useful ? Jean II */
1665 i = hp100_sense_lan(dev);
1666 hp100_ints_on();
1667 spin_unlock_irqrestore(&lp->lock, flags);
1668 if (i == HP100_LAN_ERR)
1669 printk("hp100: %s: link down detected\n", dev->name);
1670 else if (lp->lan_type != i) { /* cable change! */
1671 /* it's very hard - all network setting must be changed!!! */
1672 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1673 lp->lan_type = i;
1674 hp100_stop_interface(dev);
1675 if (lp->lan_type == HP100_LAN_100)
1676 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1677 hp100_start_interface(dev);
1678 } else {
1679 printk("hp100: %s: interface reset\n", dev->name);
1680 hp100_stop_interface(dev);
1681 if (lp->lan_type == HP100_LAN_100)
1682 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1683 hp100_start_interface(dev);
1684 mdelay(1);
1685 }
1686 }
1687 goto drop;
1688 }
1689
1690 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1691#ifdef HP100_DEBUG_TX
1692 printk("hp100: %s: start_xmit: busy\n", dev->name);
1693#endif
1694 }
1695
1696 spin_lock_irqsave(&lp->lock, flags);
1697 hp100_ints_off();
1698 val = hp100_inw(IRQ_STATUS);
1699 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1700 * when the current packet being transmitted on the wire is completed. */
1701 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1702#ifdef HP100_DEBUG_TX
1703 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1704 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1705#endif
1706
1707 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1708 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1709
1710 hp100_outw(i, DATA32); /* tell card the total packet length */
1711 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1712
1713 if (lp->mode == 2) { /* memory mapped */
1714 /* Note: The J2585B needs alignment to 32bits here! */
1715 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1716 if (!ok_flag)
1717 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1718 } else { /* programmed i/o */
1719 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1720 (skb->len + 3) >> 2);
1721 if (!ok_flag)
1722 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1723 hp100_outl(0, DATA32);
1724 }
1725
1726 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1727
1728 dev->stats.tx_packets++;
1729 dev->stats.tx_bytes += skb->len;
1730 hp100_ints_on();
1731 spin_unlock_irqrestore(&lp->lock, flags);
1732
1733 dev_consume_skb_any(skb);
1734
1735#ifdef HP100_DEBUG_TX
1736 printk("hp100: %s: start_xmit: end\n", dev->name);
1737#endif
1738
1739 return NETDEV_TX_OK;
1740
1741drop:
1742 dev_kfree_skb(skb);
1743 return NETDEV_TX_OK;
1744
1745}
1746
1747
1748/*
1749 * Receive Function (Non-Busmaster mode)
1750 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1751 * packet counter is non-zero.
1752 * For non-busmaster, this function does the whole work of transferring
1753 * the packet to the host memory and then up to higher layers via skb
1754 * and netif_rx.
1755 */
1756
1757static void hp100_rx(struct net_device *dev)
1758{
1759 int packets, pkt_len;
1760 int ioaddr = dev->base_addr;
1761 struct hp100_private *lp = netdev_priv(dev);
1762 u_int header;
1763 struct sk_buff *skb;
1764
1765#ifdef DEBUG_B
1766 hp100_outw(0x4213, TRACE);
1767 printk("hp100: %s: rx\n", dev->name);
1768#endif
1769
1770 /* First get indication of received lan packet */
1771 /* RX_PKT_CND indicates the number of packets which have been fully */
1772 /* received onto the card but have not been fully transferred of the card */
1773 packets = hp100_inb(RX_PKT_CNT);
1774#ifdef HP100_DEBUG_RX
1775 if (packets > 1)
1776 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1777#endif
1778
1779 while (packets-- > 0) {
1780 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1781 /* really advanced to the next packet. */
1782 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1783#ifdef HP100_DEBUG_RX
1784 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1785#endif
1786 }
1787
1788 /* First we get the header, which contains information about the */
1789 /* actual length of the received packet. */
1790 if (lp->mode == 2) { /* memory mapped mode */
1791 header = readl(lp->mem_ptr_virt);
1792 } else /* programmed i/o */
1793 header = hp100_inl(DATA32);
1794
1795 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1796
1797#ifdef HP100_DEBUG_RX
1798 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1799 dev->name, header & HP100_PKT_LEN_MASK,
1800 (header >> 16) & 0xfff8, (header >> 16) & 7);
1801#endif
1802
1803 /* Now we allocate the skb and transfer the data into it. */
1804 skb = netdev_alloc_skb(dev, pkt_len + 2);
1805 if (skb == NULL) { /* Not enough memory->drop packet */
1806#ifdef HP100_DEBUG
1807 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1808 dev->name, pkt_len);
1809#endif
1810 dev->stats.rx_dropped++;
1811 } else { /* skb successfully allocated */
1812
1813 u_char *ptr;
1814
1815 skb_reserve(skb,2);
1816
1817 /* ptr to start of the sk_buff data area */
1818 skb_put(skb, pkt_len);
1819 ptr = skb->data;
1820
1821 /* Now transfer the data from the card into that area */
1822 if (lp->mode == 2)
1823 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1824 else /* io mapped */
1825 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1826
1827 skb->protocol = eth_type_trans(skb, dev);
1828
1829#ifdef HP100_DEBUG_RX
1830 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1831 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1832 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1833 ptr[9], ptr[10], ptr[11]);
1834#endif
1835 netif_rx(skb);
1836 dev->stats.rx_packets++;
1837 dev->stats.rx_bytes += pkt_len;
1838 }
1839
1840 /* Indicate the card that we have got the packet */
1841 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1842
1843 switch (header & 0x00070000) {
1844 case (HP100_MULTI_ADDR_HASH << 16):
1845 case (HP100_MULTI_ADDR_NO_HASH << 16):
1846 dev->stats.multicast++;
1847 break;
1848 }
1849 } /* end of while(there are packets) loop */
1850#ifdef HP100_DEBUG_RX
1851 printk("hp100_rx: %s: end\n", dev->name);
1852#endif
1853}
1854
1855/*
1856 * Receive Function for Busmaster Mode
1857 */
1858static void hp100_rx_bm(struct net_device *dev)
1859{
1860 int ioaddr = dev->base_addr;
1861 struct hp100_private *lp = netdev_priv(dev);
1862 hp100_ring_t *ptr;
1863 u_int header;
1864 int pkt_len;
1865
1866#ifdef HP100_DEBUG_B
1867 hp100_outw(0x4214, TRACE);
1868 printk("hp100: %s: rx_bm\n", dev->name);
1869#endif
1870
1871#ifdef HP100_DEBUG
1872 if (0 == lp->rxrcommit) {
1873 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1874 return;
1875 } else
1876 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1877 * the cards BM engine */
1878 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1879 printk("hp100: %s: More packets received than committed? RX_PKT_CNT=0x%x, commit=0x%x\n",
1880 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1881 lp->rxrcommit);
1882 return;
1883 }
1884#endif
1885
1886 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1887 /*
1888 * The packet was received into the pdl pointed to by lp->rxrhead (
1889 * the oldest pdl in the ring
1890 */
1891
1892 /* First we get the header, which contains information about the */
1893 /* actual length of the received packet. */
1894
1895 ptr = lp->rxrhead;
1896
1897 header = *(ptr->pdl - 1);
1898 pkt_len = (header & HP100_PKT_LEN_MASK);
1899
1900 /* Conversion to new PCI API : NOP */
1901 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1902
1903#ifdef HP100_DEBUG_BM
1904 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1905 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1906 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1907 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",
1908 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1909 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1910 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1911#endif
1912
1913 if ((pkt_len >= MIN_ETHER_SIZE) &&
1914 (pkt_len <= MAX_ETHER_SIZE)) {
1915 if (ptr->skb == NULL) {
1916 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1917 /* can happen if we only allocated room for the pdh due to memory shortage. */
1918 dev->stats.rx_dropped++;
1919 } else {
1920 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1921 ptr->skb->protocol =
1922 eth_type_trans(ptr->skb, dev);
1923
1924 netif_rx(ptr->skb); /* Up and away... */
1925
1926 dev->stats.rx_packets++;
1927 dev->stats.rx_bytes += pkt_len;
1928 }
1929
1930 switch (header & 0x00070000) {
1931 case (HP100_MULTI_ADDR_HASH << 16):
1932 case (HP100_MULTI_ADDR_NO_HASH << 16):
1933 dev->stats.multicast++;
1934 break;
1935 }
1936 } else {
1937#ifdef HP100_DEBUG
1938 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1939#endif
1940 if (ptr->skb != NULL)
1941 dev_kfree_skb_any(ptr->skb);
1942 dev->stats.rx_errors++;
1943 }
1944
1945 lp->rxrhead = lp->rxrhead->next;
1946
1947 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1948 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1949 /* No space for skb, header can still be received. */
1950#ifdef HP100_DEBUG
1951 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1952#endif
1953 return;
1954 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1955 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1956 lp->rxrtail = lp->rxrtail->next;
1957 }
1958
1959 }
1960}
1961
1962/*
1963 * statistics
1964 */
1965static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1966{
1967 unsigned long flags;
1968 int ioaddr = dev->base_addr;
1969 struct hp100_private *lp = netdev_priv(dev);
1970
1971#ifdef HP100_DEBUG_B
1972 hp100_outw(0x4215, TRACE);
1973#endif
1974
1975 spin_lock_irqsave(&lp->lock, flags);
1976 hp100_ints_off(); /* Useful ? Jean II */
1977 hp100_update_stats(dev);
1978 hp100_ints_on();
1979 spin_unlock_irqrestore(&lp->lock, flags);
1980 return &(dev->stats);
1981}
1982
1983static void hp100_update_stats(struct net_device *dev)
1984{
1985 int ioaddr = dev->base_addr;
1986 u_short val;
1987
1988#ifdef HP100_DEBUG_B
1989 hp100_outw(0x4216, TRACE);
1990 printk("hp100: %s: update-stats\n", dev->name);
1991#endif
1992
1993 /* Note: Statistics counters clear when read. */
1994 hp100_page(MAC_CTRL);
1995 val = hp100_inw(DROPPED) & 0x0fff;
1996 dev->stats.rx_errors += val;
1997 dev->stats.rx_over_errors += val;
1998 val = hp100_inb(CRC);
1999 dev->stats.rx_errors += val;
2000 dev->stats.rx_crc_errors += val;
2001 val = hp100_inb(ABORT);
2002 dev->stats.tx_errors += val;
2003 dev->stats.tx_aborted_errors += val;
2004 hp100_page(PERFORMANCE);
2005}
2006
2007static void hp100_misc_interrupt(struct net_device *dev)
2008{
2009#ifdef HP100_DEBUG_B
2010 int ioaddr = dev->base_addr;
2011#endif
2012
2013#ifdef HP100_DEBUG_B
2014 int ioaddr = dev->base_addr;
2015 hp100_outw(0x4216, TRACE);
2016 printk("hp100: %s: misc_interrupt\n", dev->name);
2017#endif
2018
2019 /* Note: Statistics counters clear when read. */
2020 dev->stats.rx_errors++;
2021 dev->stats.tx_errors++;
2022}
2023
2024static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2025{
2026 unsigned long flags;
2027
2028#ifdef HP100_DEBUG_B
2029 hp100_outw(0x4217, TRACE);
2030 printk("hp100: %s: clear_stats\n", dev->name);
2031#endif
2032
2033 spin_lock_irqsave(&lp->lock, flags);
2034 hp100_page(MAC_CTRL); /* get all statistics bytes */
2035 hp100_inw(DROPPED);
2036 hp100_inb(CRC);
2037 hp100_inb(ABORT);
2038 hp100_page(PERFORMANCE);
2039 spin_unlock_irqrestore(&lp->lock, flags);
2040}
2041
2042
2043/*
2044 * multicast setup
2045 */
2046
2047/*
2048 * Set or clear the multicast filter for this adapter.
2049 */
2050
2051static void hp100_set_multicast_list(struct net_device *dev)
2052{
2053 unsigned long flags;
2054 int ioaddr = dev->base_addr;
2055 struct hp100_private *lp = netdev_priv(dev);
2056
2057#ifdef HP100_DEBUG_B
2058 hp100_outw(0x4218, TRACE);
2059 printk("hp100: %s: set_mc_list\n", dev->name);
2060#endif
2061
2062 spin_lock_irqsave(&lp->lock, flags);
2063 hp100_ints_off();
2064 hp100_page(MAC_CTRL);
2065 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2066
2067 if (dev->flags & IFF_PROMISC) {
2068 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2069 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2070 memset(&lp->hash_bytes, 0xff, 8);
2071 } else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) {
2072 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2073 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2074#ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2075 if (dev->flags & IFF_ALLMULTI) {
2076 /* set hash filter to receive all multicast packets */
2077 memset(&lp->hash_bytes, 0xff, 8);
2078 } else {
2079 int i, idx;
2080 u_char *addrs;
2081 struct netdev_hw_addr *ha;
2082
2083 memset(&lp->hash_bytes, 0x00, 8);
2084#ifdef HP100_DEBUG
2085 printk("hp100: %s: computing hash filter - mc_count = %i\n",
2086 dev->name, netdev_mc_count(dev));
2087#endif
2088 netdev_for_each_mc_addr(ha, dev) {
2089 addrs = ha->addr;
2090#ifdef HP100_DEBUG
2091 printk("hp100: %s: multicast = %pM, ",
2092 dev->name, addrs);
2093#endif
2094 for (i = idx = 0; i < 6; i++) {
2095 idx ^= *addrs++ & 0x3f;
2096 printk(":%02x:", idx);
2097 }
2098#ifdef HP100_DEBUG
2099 printk("idx = %i\n", idx);
2100#endif
2101 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2102 }
2103 }
2104#else
2105 memset(&lp->hash_bytes, 0xff, 8);
2106#endif
2107 } else {
2108 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2109 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2110 memset(&lp->hash_bytes, 0x00, 8);
2111 }
2112
2113 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2114 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2115 int i;
2116
2117 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2118 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2119 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2120
2121 hp100_page(MAC_ADDRESS);
2122 for (i = 0; i < 8; i++)
2123 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2124#ifdef HP100_DEBUG
2125 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2126 dev->name, lp->mac1_mode, lp->mac2_mode,
2127 lp->hash_bytes[0], lp->hash_bytes[1],
2128 lp->hash_bytes[2], lp->hash_bytes[3],
2129 lp->hash_bytes[4], lp->hash_bytes[5],
2130 lp->hash_bytes[6], lp->hash_bytes[7]);
2131#endif
2132
2133 if (lp->lan_type == HP100_LAN_100) {
2134#ifdef HP100_DEBUG
2135 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2136#endif
2137 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2138 }
2139 } else {
2140 int i;
2141 u_char old_hash_bytes[8];
2142
2143 hp100_page(MAC_ADDRESS);
2144 for (i = 0; i < 8; i++)
2145 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2146 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2147 for (i = 0; i < 8; i++)
2148 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2149#ifdef HP100_DEBUG
2150 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2151 dev->name, lp->hash_bytes[0],
2152 lp->hash_bytes[1], lp->hash_bytes[2],
2153 lp->hash_bytes[3], lp->hash_bytes[4],
2154 lp->hash_bytes[5], lp->hash_bytes[6],
2155 lp->hash_bytes[7]);
2156#endif
2157
2158 if (lp->lan_type == HP100_LAN_100) {
2159#ifdef HP100_DEBUG
2160 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2161#endif
2162 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2163 }
2164 }
2165 }
2166
2167 hp100_page(MAC_CTRL);
2168 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2169 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2170
2171 hp100_page(PERFORMANCE);
2172 hp100_ints_on();
2173 spin_unlock_irqrestore(&lp->lock, flags);
2174}
2175
2176/*
2177 * hardware interrupt handling
2178 */
2179
2180static irqreturn_t hp100_interrupt(int irq, void *dev_id)
2181{
2182 struct net_device *dev = (struct net_device *) dev_id;
2183 struct hp100_private *lp = netdev_priv(dev);
2184
2185 int ioaddr;
2186 u_int val;
2187
2188 if (dev == NULL)
2189 return IRQ_NONE;
2190 ioaddr = dev->base_addr;
2191
2192 spin_lock(&lp->lock);
2193
2194 hp100_ints_off();
2195
2196#ifdef HP100_DEBUG_B
2197 hp100_outw(0x4219, TRACE);
2198#endif
2199
2200 /* hp100_page( PERFORMANCE ); */
2201 val = hp100_inw(IRQ_STATUS);
2202#ifdef HP100_DEBUG_IRQ
2203 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2204 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2205 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2206#endif
2207
2208 if (val == 0) { /* might be a shared interrupt */
2209 spin_unlock(&lp->lock);
2210 hp100_ints_on();
2211 return IRQ_NONE;
2212 }
2213 /* We're only interested in those interrupts we really enabled. */
2214 /* val &= hp100_inw( IRQ_MASK ); */
2215
2216 /*
2217 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2218 * is considered executed whenever the RX_PDL data structure is no longer
2219 * needed.
2220 */
2221 if (val & HP100_RX_PDL_FILL_COMPL) {
2222 if (lp->mode == 1)
2223 hp100_rx_bm(dev);
2224 else {
2225 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2226 }
2227 }
2228
2229 /*
2230 * The RX_PACKET interrupt is set, when the receive packet counter is
2231 * non zero. We use this interrupt for receiving in slave mode. In
2232 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2233 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2234 * we somehow have missed a rx_pdl_fill_compl interrupt.
2235 */
2236
2237 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2238 if (lp->mode != 1) /* non busmaster */
2239 hp100_rx(dev);
2240 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2241 /* Shouldn't happen - maybe we missed a RX_PDL_FILL Interrupt? */
2242 hp100_rx_bm(dev);
2243 }
2244 }
2245
2246 /*
2247 * Ack. that we have noticed the interrupt and thereby allow next one.
2248 * Note that this is now done after the slave rx function, since first
2249 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2250 * on the J2573.
2251 */
2252 hp100_outw(val, IRQ_STATUS);
2253
2254 /*
2255 * RX_ERROR is set when a packet is dropped due to no memory resources on
2256 * the card or when a RCV_ERR occurs.
2257 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2258 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2259 */
2260 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2261#ifdef HP100_DEBUG_IRQ
2262 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2263#endif
2264 hp100_update_stats(dev);
2265 if (lp->mode == 1) {
2266 hp100_rxfill(dev);
2267 hp100_clean_txring(dev);
2268 }
2269 }
2270
2271 /*
2272 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2273 */
2274 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2275 hp100_rxfill(dev);
2276
2277 /*
2278 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2279 * is completed
2280 */
2281 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2282 hp100_clean_txring(dev);
2283
2284 /*
2285 * MISC_ERROR is set when either the LAN link goes down or a detected
2286 * bus error occurs.
2287 */
2288 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2289#ifdef HP100_DEBUG_IRQ
2290 printk
2291 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2292 dev->name);
2293#endif
2294 if (lp->mode == 1) {
2295 hp100_clean_txring(dev);
2296 hp100_rxfill(dev);
2297 }
2298 hp100_misc_interrupt(dev);
2299 }
2300
2301 spin_unlock(&lp->lock);
2302 hp100_ints_on();
2303 return IRQ_HANDLED;
2304}
2305
2306/*
2307 * some misc functions
2308 */
2309
2310static void hp100_start_interface(struct net_device *dev)
2311{
2312 unsigned long flags;
2313 int ioaddr = dev->base_addr;
2314 struct hp100_private *lp = netdev_priv(dev);
2315
2316#ifdef HP100_DEBUG_B
2317 hp100_outw(0x4220, TRACE);
2318 printk("hp100: %s: hp100_start_interface\n", dev->name);
2319#endif
2320
2321 spin_lock_irqsave(&lp->lock, flags);
2322
2323 /* Ensure the adapter does not want to request an interrupt when */
2324 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2325 hp100_page(PERFORMANCE);
2326 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2327 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2328 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2329 OPTION_LSW);
2330 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2331 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2332
2333 if (lp->mode == 1) {
2334 /* Make sure BM bit is set... */
2335 hp100_page(HW_MAP);
2336 hp100_orb(HP100_BM_MASTER, BM);
2337 hp100_rxfill(dev);
2338 } else if (lp->mode == 2) {
2339 /* Enable memory mapping. Note: Don't do this when busmaster. */
2340 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2341 }
2342
2343 hp100_page(PERFORMANCE);
2344 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2345 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2346
2347 /* enable a few interrupts: */
2348 if (lp->mode == 1) { /* busmaster mode */
2349 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2350 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2351 /* HP100_RX_PACKET | */
2352 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2353 /* HP100_TX_PDA_ZERO | */
2354 HP100_TX_COMPLETE |
2355 /* HP100_MISC_ERROR | */
2356 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2357 } else {
2358 hp100_outw(HP100_RX_PACKET |
2359 HP100_RX_ERROR | HP100_SET_HB |
2360 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2361 }
2362
2363 /* Note : before hp100_set_multicast_list(), because it will play with
2364 * spinlock itself... Jean II */
2365 spin_unlock_irqrestore(&lp->lock, flags);
2366
2367 /* Enable MAC Tx and RX, set MAC modes, ... */
2368 hp100_set_multicast_list(dev);
2369}
2370
2371static void hp100_stop_interface(struct net_device *dev)
2372{
2373 struct hp100_private *lp = netdev_priv(dev);
2374 int ioaddr = dev->base_addr;
2375 u_int val;
2376
2377#ifdef HP100_DEBUG_B
2378 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2379 hp100_outw(0x4221, TRACE);
2380#endif
2381
2382 if (lp->mode == 1)
2383 hp100_BM_shutdown(dev);
2384 else {
2385 /* Note: MMAP_DIS will be reenabled by start_interface */
2386 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2387 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2388 OPTION_LSW);
2389 val = hp100_inw(OPTION_LSW);
2390
2391 hp100_page(MAC_CTRL);
2392 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2393
2394 if (!(val & HP100_HW_RST))
2395 return; /* If reset, imm. return ... */
2396 /* ... else: busy wait until idle */
2397 for (val = 0; val < 6000; val++)
2398 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2399 hp100_page(PERFORMANCE);
2400 return;
2401 }
2402 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2403 hp100_page(PERFORMANCE);
2404 }
2405}
2406
2407static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2408{
2409 int i;
2410 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2411
2412#ifdef HP100_DEBUG_B
2413 hp100_outw(0x4222, TRACE);
2414#endif
2415
2416 hp100_page(EEPROM_CTRL);
2417 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2418 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2419 for (i = 0; i < 10000; i++)
2420 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2421 return;
2422 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2423}
2424
2425/* Sense connection status.
2426 * return values: LAN_10 - Connected to 10Mbit/s network
2427 * LAN_100 - Connected to 100Mbit/s network
2428 * LAN_ERR - not connected or 100Mbit/s Hub down
2429 */
2430static int hp100_sense_lan(struct net_device *dev)
2431{
2432 int ioaddr = dev->base_addr;
2433 u_short val_VG, val_10;
2434 struct hp100_private *lp = netdev_priv(dev);
2435
2436#ifdef HP100_DEBUG_B
2437 hp100_outw(0x4223, TRACE);
2438#endif
2439
2440 hp100_page(MAC_CTRL);
2441 val_10 = hp100_inb(10_LAN_CFG_1);
2442 val_VG = hp100_inb(VG_LAN_CFG_1);
2443 hp100_page(PERFORMANCE);
2444#ifdef HP100_DEBUG
2445 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2446 dev->name, val_VG, val_10);
2447#endif
2448
2449 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2450 return HP100_LAN_10;
2451
2452 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2453 /*
2454 * This can be overriden by dos utility, so if this has no effect,
2455 * perhaps you need to download that utility from HP and set card
2456 * back to "auto detect".
2457 */
2458 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2459 hp100_page(MAC_CTRL);
2460 hp100_outb(val_10, 10_LAN_CFG_1);
2461 hp100_page(PERFORMANCE);
2462 return HP100_LAN_COAX;
2463 }
2464
2465 /* Those cards don't have a 100 Mbit connector */
2466 if ( !strcmp(lp->id, "HWP1920") ||
2467 (lp->pci_dev &&
2468 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2469 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2470 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2471 return HP100_LAN_ERR;
2472
2473 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2474 return HP100_LAN_100;
2475 return HP100_LAN_ERR;
2476}
2477
2478static int hp100_down_vg_link(struct net_device *dev)
2479{
2480 struct hp100_private *lp = netdev_priv(dev);
2481 int ioaddr = dev->base_addr;
2482 unsigned long time;
2483 long savelan, newlan;
2484
2485#ifdef HP100_DEBUG_B
2486 hp100_outw(0x4224, TRACE);
2487 printk("hp100: %s: down_vg_link\n", dev->name);
2488#endif
2489
2490 hp100_page(MAC_CTRL);
2491 time = jiffies + (HZ / 4);
2492 do {
2493 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2494 break;
2495 if (!in_interrupt())
2496 schedule_timeout_interruptible(1);
2497 } while (time_after(time, jiffies));
2498
2499 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2500 return 0;
2501
2502 /* Drop the VG Link by clearing the link up cmd and load addr. */
2503
2504 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2505 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2506
2507 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2508 time = jiffies + (HZ / 2);
2509 do {
2510 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2511 break;
2512 if (!in_interrupt())
2513 schedule_timeout_interruptible(1);
2514 } while (time_after(time, jiffies));
2515
2516#ifdef HP100_DEBUG
2517 if (time_after_eq(jiffies, time))
2518 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2519#endif
2520
2521 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2522 /* logout under traffic (even though all the status bits are cleared), */
2523 /* do this workaround to get the Rev 1 MAC in its idle state */
2524 if (lp->chip == HP100_CHIPID_LASSEN) {
2525 /* Reset VG MAC to insure it leaves the logoff state even if */
2526 /* the Hub is still emitting tones */
2527 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2528 udelay(1500); /* wait for >1ms */
2529 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2530 udelay(1500);
2531 }
2532
2533 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2534 /* to get the VG mac to full reset. This is not req.d with later chips */
2535 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2536 /* selected again! This will be left to the connect hub function to */
2537 /* perform if desired. */
2538 if (lp->chip == HP100_CHIPID_LASSEN) {
2539 /* Have to write to 10 and 100VG control registers simultaneously */
2540 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2541 newlan &= ~(HP100_VG_SEL << 16);
2542 newlan |= (HP100_DOT3_MAC) << 8;
2543 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2544 hp100_outl(newlan, 10_LAN_CFG_1);
2545
2546 /* Conditionally stall for 5sec on VG selected. */
2547 time = jiffies + (HZ * 5);
2548 do {
2549 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2550 break;
2551 if (!in_interrupt())
2552 schedule_timeout_interruptible(1);
2553 } while (time_after(time, jiffies));
2554
2555 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2556 hp100_outl(savelan, 10_LAN_CFG_1);
2557 }
2558
2559 time = jiffies + (3 * HZ); /* Timeout 3s */
2560 do {
2561 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2562 break;
2563 if (!in_interrupt())
2564 schedule_timeout_interruptible(1);
2565 } while (time_after(time, jiffies));
2566
2567 if (time_before_eq(time, jiffies)) {
2568#ifdef HP100_DEBUG
2569 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2570#endif
2571 return -EIO;
2572 }
2573
2574 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2575 do {
2576 if (!in_interrupt())
2577 schedule_timeout_interruptible(1);
2578 } while (time_after(time, jiffies));
2579
2580 return 0;
2581}
2582
2583static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2584{
2585 int ioaddr = dev->base_addr;
2586 struct hp100_private *lp = netdev_priv(dev);
2587 u_short val = 0;
2588 unsigned long time;
2589 int startst;
2590
2591#ifdef HP100_DEBUG_B
2592 hp100_outw(0x4225, TRACE);
2593 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2594#endif
2595
2596 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2597 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2598 * promiscuous mode change)
2599 */
2600 hp100_page(MAC_CTRL);
2601 startst = hp100_inb(VG_LAN_CFG_1);
2602 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2603#ifdef HP100_DEBUG_TRAINING
2604 printk("hp100: %s: Start training\n", dev->name);
2605#endif
2606
2607 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2608 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2609
2610 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2611 /* entry then temporarily put them into force 100Mbit mode */
2612 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2613 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2614
2615 /* Drop the VG link by zeroing Link Up Command and Load Address */
2616 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2617
2618#ifdef HP100_DEBUG_TRAINING
2619 printk("hp100: %s: Bring down the link\n", dev->name);
2620#endif
2621
2622 /* Wait for link to drop */
2623 time = jiffies + (HZ / 10);
2624 do {
2625 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2626 break;
2627 if (!in_interrupt())
2628 schedule_timeout_interruptible(1);
2629 } while (time_after(time, jiffies));
2630
2631 /* Start an addressed training and optionally request promiscuous port */
2632 if ((dev->flags) & IFF_PROMISC) {
2633 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2634 if (lp->chip == HP100_CHIPID_LASSEN)
2635 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2636 } else {
2637 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2638 /* For ETR parts we need to reset the prom. bit in the training
2639 * register, otherwise promiscious mode won't be disabled.
2640 */
2641 if (lp->chip == HP100_CHIPID_LASSEN) {
2642 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2643 }
2644 }
2645
2646 /* With ETR parts, frame format request bits can be set. */
2647 if (lp->chip == HP100_CHIPID_LASSEN)
2648 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2649
2650 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2651
2652 /* Note: Next wait could be omitted for Hood and earlier chips under */
2653 /* certain circumstances */
2654 /* TODO: check if hood/earlier and skip wait. */
2655
2656 /* Wait for either short timeout for VG tones or long for login */
2657 /* Wait for the card hardware to signalise link cable status ok... */
2658 hp100_page(MAC_CTRL);
2659 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2660 do {
2661 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2662 break;
2663 if (!in_interrupt())
2664 schedule_timeout_interruptible(1);
2665 } while (time_before(jiffies, time));
2666
2667 if (time_after_eq(jiffies, time)) {
2668#ifdef HP100_DEBUG_TRAINING
2669 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2670#endif
2671 } else {
2672#ifdef HP100_DEBUG_TRAINING
2673 printk
2674 ("hp100: %s: HUB tones detected. Trying to train.\n",
2675 dev->name);
2676#endif
2677
2678 time = jiffies + (2 * HZ); /* again a timeout */
2679 do {
2680 val = hp100_inb(VG_LAN_CFG_1);
2681 if ((val & (HP100_LINK_UP_ST))) {
2682#ifdef HP100_DEBUG_TRAINING
2683 printk("hp100: %s: Passed training.\n", dev->name);
2684#endif
2685 break;
2686 }
2687 if (!in_interrupt())
2688 schedule_timeout_interruptible(1);
2689 } while (time_after(time, jiffies));
2690 }
2691
2692 /* If LINK_UP_ST is set, then we are logged into the hub. */
2693 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2694#ifdef HP100_DEBUG_TRAINING
2695 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2696 if (lp->chip == HP100_CHIPID_LASSEN) {
2697 val = hp100_inw(TRAIN_ALLOW);
2698 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2699 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2700 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2701 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2702 }
2703#endif
2704 } else {
2705 /* If LINK_UP_ST is not set, login was not successful */
2706 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2707 if (lp->chip == HP100_CHIPID_LASSEN) {
2708 /* Check allowed Register to find out why there is a problem. */
2709 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2710#ifdef HP100_DEBUG_TRAINING
2711 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2712#endif
2713 if (val & HP100_MALLOW_ACCDENIED)
2714 printk("hp100: %s: HUB access denied.\n", dev->name);
2715 if (val & HP100_MALLOW_CONFIGURE)
2716 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2717 if (val & HP100_MALLOW_DUPADDR)
2718 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2719 }
2720 }
2721
2722 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2723 /* to auto-select mode */
2724
2725 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2726 hp100_page(MAC_CTRL);
2727 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2728 }
2729
2730 val = hp100_inb(VG_LAN_CFG_1);
2731
2732 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2733 hp100_page(PERFORMANCE);
2734 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2735
2736 if (val & HP100_LINK_UP_ST)
2737 return 0; /* login was ok */
2738 else {
2739 printk("hp100: %s: Training failed.\n", dev->name);
2740 hp100_down_vg_link(dev);
2741 return -EIO;
2742 }
2743 }
2744 /* no forced relogin & already link there->no training. */
2745 return -EIO;
2746}
2747
2748static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2749{
2750 int ioaddr = dev->base_addr;
2751 struct hp100_private *lp = netdev_priv(dev);
2752
2753#ifdef HP100_DEBUG_B
2754 hp100_outw(0x4226, TRACE);
2755 printk("hp100: %s: cascade_reset\n", dev->name);
2756#endif
2757
2758 if (enable) {
2759 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2760 if (lp->chip == HP100_CHIPID_LASSEN) {
2761 /* Lassen requires a PCI transmit fifo reset */
2762 hp100_page(HW_MAP);
2763 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2764 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2765 /* Wait for min. 300 ns */
2766 /* we can't use jiffies here, because it may be */
2767 /* that we have disabled the timer... */
2768 udelay(400);
2769 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2770 hp100_page(PERFORMANCE);
2771 }
2772 } else { /* bring out of reset */
2773 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2774 udelay(400);
2775 hp100_page(PERFORMANCE);
2776 }
2777}
2778
2779#ifdef HP100_DEBUG
2780void hp100_RegisterDump(struct net_device *dev)
2781{
2782 int ioaddr = dev->base_addr;
2783 int Page;
2784 int Register;
2785
2786 /* Dump common registers */
2787 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2788 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2789 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2790 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2791 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2792
2793 /* Dump paged registers */
2794 for (Page = 0; Page < 8; Page++) {
2795 /* Dump registers */
2796 printk("page: 0x%.2x\n", Page);
2797 outw(Page, ioaddr + 0x02);
2798 for (Register = 0x8; Register < 0x22; Register += 2) {
2799 /* Display Register contents except data port */
2800 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2801 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2802 }
2803 }
2804 }
2805 hp100_page(PERFORMANCE);
2806}
2807#endif
2808
2809
2810static void cleanup_dev(struct net_device *d)
2811{
2812 struct hp100_private *p = netdev_priv(d);
2813
2814 unregister_netdev(d);
2815 release_region(d->base_addr, HP100_REGION_SIZE);
2816
2817 if (p->mode == 1) /* busmaster */
2818 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2819 p->page_vaddr_algn,
2820 virt_to_whatever(d, p->page_vaddr_algn));
2821 if (p->mem_ptr_virt)
2822 iounmap(p->mem_ptr_virt);
2823
2824 free_netdev(d);
2825}
2826
2827static int hp100_eisa_probe(struct device *gendev)
2828{
2829 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2830 struct eisa_device *edev = to_eisa_device(gendev);
2831 int err;
2832
2833 if (!dev)
2834 return -ENOMEM;
2835
2836 SET_NETDEV_DEV(dev, &edev->dev);
2837
2838 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2839 if (err)
2840 goto out1;
2841
2842#ifdef HP100_DEBUG
2843 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2844 dev->base_addr);
2845#endif
2846 dev_set_drvdata(gendev, dev);
2847 return 0;
2848 out1:
2849 free_netdev(dev);
2850 return err;
2851}
2852
2853static int hp100_eisa_remove(struct device *gendev)
2854{
2855 struct net_device *dev = dev_get_drvdata(gendev);
2856 cleanup_dev(dev);
2857 return 0;
2858}
2859
2860static struct eisa_driver hp100_eisa_driver = {
2861 .id_table = hp100_eisa_tbl,
2862 .driver = {
2863 .name = "hp100",
2864 .probe = hp100_eisa_probe,
2865 .remove = hp100_eisa_remove,
2866 }
2867};
2868
2869static int hp100_pci_probe(struct pci_dev *pdev,
2870 const struct pci_device_id *ent)
2871{
2872 struct net_device *dev;
2873 int ioaddr;
2874 u_short pci_command;
2875 int err;
2876
2877 if (pci_enable_device(pdev))
2878 return -ENODEV;
2879
2880 dev = alloc_etherdev(sizeof(struct hp100_private));
2881 if (!dev) {
2882 err = -ENOMEM;
2883 goto out0;
2884 }
2885
2886 SET_NETDEV_DEV(dev, &pdev->dev);
2887
2888 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2889 if (!(pci_command & PCI_COMMAND_IO)) {
2890#ifdef HP100_DEBUG
2891 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2892#endif
2893 pci_command |= PCI_COMMAND_IO;
2894 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2895 }
2896
2897 if (!(pci_command & PCI_COMMAND_MASTER)) {
2898#ifdef HP100_DEBUG
2899 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2900#endif
2901 pci_command |= PCI_COMMAND_MASTER;
2902 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2903 }
2904
2905 ioaddr = pci_resource_start(pdev, 0);
2906 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2907 if (err)
2908 goto out1;
2909
2910#ifdef HP100_DEBUG
2911 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2912#endif
2913 pci_set_drvdata(pdev, dev);
2914 return 0;
2915 out1:
2916 free_netdev(dev);
2917 out0:
2918 pci_disable_device(pdev);
2919 return err;
2920}
2921
2922static void hp100_pci_remove(struct pci_dev *pdev)
2923{
2924 struct net_device *dev = pci_get_drvdata(pdev);
2925
2926 cleanup_dev(dev);
2927 pci_disable_device(pdev);
2928}
2929
2930
2931static struct pci_driver hp100_pci_driver = {
2932 .name = "hp100",
2933 .id_table = hp100_pci_tbl,
2934 .probe = hp100_pci_probe,
2935 .remove = hp100_pci_remove,
2936};
2937
2938/*
2939 * module section
2940 */
2941
2942MODULE_LICENSE("GPL");
2943MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, "
2944 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2945MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2946
2947/*
2948 * Note: to register three isa devices, use:
2949 * option hp100 hp100_port=0,0,0
2950 * to register one card at io 0x280 as eth239, use:
2951 * option hp100 hp100_port=0x280
2952 */
2953#if defined(MODULE) && defined(CONFIG_ISA)
2954#define HP100_DEVICES 5
2955/* Parameters set by insmod */
2956static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2957module_param_hw_array(hp100_port, int, ioport, NULL, 0);
2958
2959/* List of devices */
2960static struct net_device *hp100_devlist[HP100_DEVICES];
2961
2962static int __init hp100_isa_init(void)
2963{
2964 struct net_device *dev;
2965 int i, err, cards = 0;
2966
2967 /* Don't autoprobe ISA bus */
2968 if (hp100_port[0] == 0)
2969 return -ENODEV;
2970
2971 /* Loop on all possible base addresses */
2972 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2973 dev = alloc_etherdev(sizeof(struct hp100_private));
2974 if (!dev) {
2975 while (cards > 0)
2976 cleanup_dev(hp100_devlist[--cards]);
2977
2978 return -ENOMEM;
2979 }
2980
2981 err = hp100_isa_probe(dev, hp100_port[i]);
2982 if (!err)
2983 hp100_devlist[cards++] = dev;
2984 else
2985 free_netdev(dev);
2986 }
2987
2988 return cards > 0 ? 0 : -ENODEV;
2989}
2990
2991static void hp100_isa_cleanup(void)
2992{
2993 int i;
2994
2995 for (i = 0; i < HP100_DEVICES; i++) {
2996 struct net_device *dev = hp100_devlist[i];
2997 if (dev)
2998 cleanup_dev(dev);
2999 }
3000}
3001#else
3002#define hp100_isa_init() (0)
3003#define hp100_isa_cleanup() do { } while(0)
3004#endif
3005
3006static int __init hp100_module_init(void)
3007{
3008 int err;
3009
3010 err = hp100_isa_init();
3011 if (err && err != -ENODEV)
3012 goto out;
3013 err = eisa_driver_register(&hp100_eisa_driver);
3014 if (err && err != -ENODEV)
3015 goto out2;
3016 err = pci_register_driver(&hp100_pci_driver);
3017 if (err && err != -ENODEV)
3018 goto out3;
3019 out:
3020 return err;
3021 out3:
3022 eisa_driver_unregister (&hp100_eisa_driver);
3023 out2:
3024 hp100_isa_cleanup();
3025 goto out;
3026}
3027
3028
3029static void __exit hp100_module_exit(void)
3030{
3031 hp100_isa_cleanup();
3032 eisa_driver_unregister (&hp100_eisa_driver);
3033 pci_unregister_driver (&hp100_pci_driver);
3034}
3035
3036module_init(hp100_module_init)
3037module_exit(hp100_module_exit)