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tc35815: Define more Rx status bits
[linux-2.6/x86.git] / drivers / net / hp100.c
blobfd34452c05b101b9a1736550e11bdeb2b8a97daa
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/string.h>
102 #include <linux/errno.h>
103 #include <linux/ioport.h>
104 #include <linux/slab.h>
105 #include <linux/interrupt.h>
106 #include <linux/eisa.h>
107 #include <linux/pci.h>
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
151 struct hp100_private {
152 spinlock_t lock;
153 char id[HP100_SIG_LEN];
154 u_short chip;
155 u_short soft_model;
156 u_int memory_size;
157 u_int virt_memory_size;
158 u_short rx_ratio; /* 1 - 99 */
159 u_short priority_tx; /* != 0 - priority tx */
160 u_short mode; /* PIO, Shared Mem or Busmaster */
161 u_char bus;
162 struct pci_dev *pci_dev;
163 short mem_mapped; /* memory mapped access */
164 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
165 unsigned long mem_ptr_phys; /* physical memory mapped area */
166 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
167 int hub_status; /* was login to hub successful? */
168 u_char mac1_mode;
169 u_char mac2_mode;
170 u_char hash_bytes[8];
171 struct net_device_stats stats;
172
173 /* Rings for busmaster mode: */
174 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
175 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
176 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
177 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
178
179 hp100_ring_t rxring[MAX_RX_PDL];
180 hp100_ring_t txring[MAX_TX_PDL];
181
182 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
183 u_long whatever_offset; /* Offset to bus/phys/dma address */
184 int rxrcommit; /* # Rx PDLs commited to adapter */
185 int txrcommit; /* # Tx PDLs commited to adapter */
186 };
187
188 /*
189 * variables
190 */
191 #ifdef CONFIG_ISA
192 static const char *hp100_isa_tbl[] = {
193 "HWPF150", /* HP J2573 rev A */
194 "HWP1950", /* HP J2573 */
195 };
196 #endif
197
198 #ifdef CONFIG_EISA
199 static struct eisa_device_id hp100_eisa_tbl[] = {
200 { "HWPF180" }, /* HP J2577 rev A */
201 { "HWP1920" }, /* HP 27248B */
202 { "HWP1940" }, /* HP J2577 */
203 { "HWP1990" }, /* HP J2577 */
204 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
205 { "CPX0401" }, /* FreedomLine 100/VG */
206 { "" } /* Mandatory final entry ! */
207 };
208 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
209 #endif
210
211 #ifdef CONFIG_PCI
212 static struct pci_device_id hp100_pci_tbl[] = {
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
217 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
218 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
219 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
220 {} /* Terminating entry */
221 };
222 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
223 #endif
224
225 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
226 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
227 static int hp100_mode = 1;
228
229 module_param(hp100_rx_ratio, int, 0);
230 module_param(hp100_priority_tx, int, 0);
231 module_param(hp100_mode, int, 0);
232
233 /*
234 * prototypes
235 */
236
237 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
238 struct pci_dev *pci_dev);
239
240
241 static int hp100_open(struct net_device *dev);
242 static int hp100_close(struct net_device *dev);
243 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
244 static int hp100_start_xmit_bm(struct sk_buff *skb,
245 struct net_device *dev);
246 static void hp100_rx(struct net_device *dev);
247 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
248 static void hp100_misc_interrupt(struct net_device *dev);
249 static void hp100_update_stats(struct net_device *dev);
250 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
251 static void hp100_set_multicast_list(struct net_device *dev);
252 static irqreturn_t hp100_interrupt(int irq, void *dev_id);
253 static void hp100_start_interface(struct net_device *dev);
254 static void hp100_stop_interface(struct net_device *dev);
255 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
256 static int hp100_sense_lan(struct net_device *dev);
257 static int hp100_login_to_vg_hub(struct net_device *dev,
258 u_short force_relogin);
259 static int hp100_down_vg_link(struct net_device *dev);
260 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
261 static void hp100_BM_shutdown(struct net_device *dev);
262 static void hp100_mmuinit(struct net_device *dev);
263 static void hp100_init_pdls(struct net_device *dev);
264 static int hp100_init_rxpdl(struct net_device *dev,
265 register hp100_ring_t * ringptr,
266 register u_int * pdlptr);
267 static int hp100_init_txpdl(struct net_device *dev,
268 register hp100_ring_t * ringptr,
269 register u_int * pdlptr);
270 static void hp100_rxfill(struct net_device *dev);
271 static void hp100_hwinit(struct net_device *dev);
272 static void hp100_clean_txring(struct net_device *dev);
273 #ifdef HP100_DEBUG
274 static 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 */
283 static 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
289 static 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... */
296 static 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 */
311 static __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
339 static __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
375 static 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)
399 struct 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
428 static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
429 u_char bus, struct pci_dev *pci_dev)
430 {
431 int i;
432 int err = -ENODEV;
433 const char *eid;
434 u_int chip;
435 u_char uc;
436 u_int memory_size = 0, virt_memory_size = 0;
437 u_short local_mode, lsw;
438 short mem_mapped;
439 unsigned long mem_ptr_phys;
440 void __iomem *mem_ptr_virt;
441 struct hp100_private *lp;
442
443 #ifdef HP100_DEBUG_B
444 hp100_outw(0x4201, TRACE);
445 printk("hp100: %s: probe1\n", dev->name);
446 #endif
447
448 /* memory region for programmed i/o */
449 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
450 goto out1;
451
452 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
453 goto out2;
454
455 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
456 #ifdef HP100_DEBUG
457 if (chip == HP100_CHIPID_SHASTA)
458 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
459 else if (chip == HP100_CHIPID_RAINIER)
460 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
461 else if (chip == HP100_CHIPID_LASSEN)
462 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
463 else
464 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
465 #endif
466
467 dev->base_addr = ioaddr;
468
469 eid = hp100_read_id(ioaddr);
470 if (eid == NULL) { /* bad checksum? */
471 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
472 goto out2;
473 }
474
475 hp100_page(ID_MAC_ADDR);
476 for (i = uc = 0; i < 7; i++)
477 uc += hp100_inb(LAN_ADDR + i);
478 if (uc != 0xff) {
479 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
480 err = -EIO;
481 goto out2;
482 }
483
484 /* Make sure, that all registers are correctly updated... */
485
486 hp100_load_eeprom(dev, ioaddr);
487 wait();
488
489 /*
490 * Determine driver operation mode
491 *
492 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
493 * force driver modes:
494 * hp100_mode=1 -> default, use busmaster mode if configured.
495 * hp100_mode=2 -> enable shared memory mode
496 * hp100_mode=3 -> force use of i/o mapped mode.
497 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
498 */
499
500 /*
501 * LSW values:
502 * 0x2278 -> J2585B, PnP shared memory mode
503 * 0x2270 -> J2585B, shared memory mode, 0xdc000
504 * 0xa23c -> J2585B, I/O mapped mode
505 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
506 * 0x2220 -> EISA HP, I/O (Shasta Chip)
507 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
508 */
509
510 #if 0
511 local_mode = 0x2270;
512 hp100_outw(0xfefe, OPTION_LSW);
513 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
514 #endif
515
516 /* hp100_mode value maybe used in future by another card */
517 local_mode = hp100_mode;
518 if (local_mode < 1 || local_mode > 4)
519 local_mode = 1; /* default */
520 #ifdef HP100_DEBUG
521 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
522 hp100_inw(OPTION_LSW));
523 #endif
524
525 if (local_mode == 3) {
526 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
527 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
528 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
529 printk("hp100: IO mapped mode forced.\n");
530 } else if (local_mode == 2) {
531 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
532 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
533 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
534 printk("hp100: Shared memory mode requested.\n");
535 } else if (local_mode == 4) {
536 if (chip == HP100_CHIPID_LASSEN) {
537 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
538 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
539 printk("hp100: Busmaster mode requested.\n");
540 }
541 local_mode = 1;
542 }
543
544 if (local_mode == 1) { /* default behaviour */
545 lsw = hp100_inw(OPTION_LSW);
546
547 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
548 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
549 #ifdef HP100_DEBUG
550 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
551 #endif
552 local_mode = 3;
553 } else if (chip == HP100_CHIPID_LASSEN &&
554 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
555 /* Conversion to new PCI API :
556 * I don't have the doc, but I assume that the card
557 * can map the full 32bit address space.
558 * Also, we can have EISA Busmaster cards (not tested),
559 * so beware !!! - Jean II */
560 if((bus == HP100_BUS_PCI) &&
561 (pci_set_dma_mask(pci_dev, DMA_32BIT_MASK))) {
562 /* Gracefully fallback to shared memory */
563 goto busmasterfail;
564 }
565 printk("hp100: Busmaster mode enabled.\n");
566 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
567 } else {
568 busmasterfail:
569 #ifdef HP100_DEBUG
570 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
571 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
572 #endif
573 /* In this case, try shared memory mode */
574 local_mode = 2;
575 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
576 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
577 }
578 }
579 #ifdef HP100_DEBUG
580 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
581 #endif
582
583 /* Check for shared memory on the card, eventually remap it */
584 hp100_page(HW_MAP);
585 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
586 mem_ptr_phys = 0UL;
587 mem_ptr_virt = NULL;
588 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
589 virt_memory_size = 0;
590
591 /* For memory mapped or busmaster mode, we want the memory address */
592 if (mem_mapped || (local_mode == 1)) {
593 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
594 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
595
596 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
597 printk("hp100: Can only use programmed i/o mode.\n");
598 mem_ptr_phys = 0;
599 mem_mapped = 0;
600 local_mode = 3; /* Use programmed i/o */
601 }
602
603 /* We do not need access to shared memory in busmaster mode */
604 /* However in slave mode we need to remap high (>1GB) card memory */
605 if (local_mode != 1) { /* = not busmaster */
606 /* We try with smaller memory sizes, if ioremap fails */
607 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
608 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
609 #ifdef HP100_DEBUG
610 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
611 #endif
612 } else {
613 #ifdef HP100_DEBUG
614 printk("hp100: %s: remapped 0x%x bytes high PCI memory at 0x%lx to %p.\n", dev->name, virt_memory_size, mem_ptr_phys, mem_ptr_virt);
615 #endif
616 break;
617 }
618 }
619
620 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
621 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
622 local_mode = 3;
623 virt_memory_size = 0;
624 }
625 }
626 }
627
628 if (local_mode == 3) { /* io mapped forced */
629 mem_mapped = 0;
630 mem_ptr_phys = 0;
631 mem_ptr_virt = NULL;
632 printk("hp100: Using (slow) programmed i/o mode.\n");
633 }
634
635 /* Initialise the "private" data structure for this card. */
636 lp = netdev_priv(dev);
637
638 spin_lock_init(&lp->lock);
639 strlcpy(lp->id, eid, HP100_SIG_LEN);
640 lp->chip = chip;
641 lp->mode = local_mode;
642 lp->bus = bus;
643 lp->pci_dev = pci_dev;
644 lp->priority_tx = hp100_priority_tx;
645 lp->rx_ratio = hp100_rx_ratio;
646 lp->mem_ptr_phys = mem_ptr_phys;
647 lp->mem_ptr_virt = mem_ptr_virt;
648 hp100_page(ID_MAC_ADDR);
649 lp->soft_model = hp100_inb(SOFT_MODEL);
650 lp->mac1_mode = HP100_MAC1MODE3;
651 lp->mac2_mode = HP100_MAC2MODE3;
652 memset(&lp->hash_bytes, 0x00, 8);
653
654 dev->base_addr = ioaddr;
655
656 lp->memory_size = memory_size;
657 lp->virt_memory_size = virt_memory_size;
658 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
659
660 dev->open = hp100_open;
661 dev->stop = hp100_close;
662
663 if (lp->mode == 1) /* busmaster */
664 dev->hard_start_xmit = hp100_start_xmit_bm;
665 else
666 dev->hard_start_xmit = hp100_start_xmit;
667
668 dev->get_stats = hp100_get_stats;
669 dev->set_multicast_list = &hp100_set_multicast_list;
670
671 /* Ask the card for which IRQ line it is configured */
672 if (bus == HP100_BUS_PCI) {
673 dev->irq = pci_dev->irq;
674 } else {
675 hp100_page(HW_MAP);
676 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
677 if (dev->irq == 2)
678 dev->irq = 9;
679 }
680
681 if (lp->mode == 1) /* busmaster */
682 dev->dma = 4;
683
684 /* Ask the card for its MAC address and store it for later use. */
685 hp100_page(ID_MAC_ADDR);
686 for (i = uc = 0; i < 6; i++)
687 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
688
689 /* Reset statistics (counters) */
690 hp100_clear_stats(lp, ioaddr);
691
692 /* If busmaster mode is wanted, a dma-capable memory area is needed for
693 * the rx and tx PDLs
694 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
695 * needed for the allocation of the memory area.
696 */
697
698 /* TODO: We do not need this with old cards, where PDLs are stored
699 * in the cards shared memory area. But currently, busmaster has been
700 * implemented/tested only with the lassen chip anyway... */
701 if (lp->mode == 1) { /* busmaster */
702 dma_addr_t page_baddr;
703 /* Get physically continous memory for TX & RX PDLs */
704 /* Conversion to new PCI API :
705 * Pages are always aligned and zeroed, no need to it ourself.
706 * Doc says should be OK for EISA bus as well - Jean II */
707 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
708 err = -ENOMEM;
709 goto out2;
710 }
711 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
712
713 #ifdef HP100_DEBUG_BM
714 printk("hp100: %s: Reserved DMA memory from 0x%x to 0x%x\n", dev->name, (u_int) lp->page_vaddr_algn, (u_int) lp->page_vaddr_algn + MAX_RINGSIZE);
715 #endif
716 lp->rxrcommit = lp->txrcommit = 0;
717 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
718 lp->txrhead = lp->txrtail = &(lp->txring[0]);
719 }
720
721 /* Initialise the card. */
722 /* (I'm not really sure if it's a good idea to do this during probing, but
723 * like this it's assured that the lan connection type can be sensed
724 * correctly)
725 */
726 hp100_hwinit(dev);
727
728 /* Try to find out which kind of LAN the card is connected to. */
729 lp->lan_type = hp100_sense_lan(dev);
730
731 /* Print out a message what about what we think we have probed. */
732 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
733 switch (bus) {
734 case HP100_BUS_EISA:
735 printk("EISA");
736 break;
737 case HP100_BUS_PCI:
738 printk("PCI");
739 break;
740 default:
741 printk("ISA");
742 break;
743 }
744 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
745
746 if (lp->mode == 2) { /* memory mapped */
747 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
748 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
749 if (mem_ptr_virt)
750 printk(" (virtual base %p)", mem_ptr_virt);
751 printk(".\n");
752
753 /* Set for info when doing ifconfig */
754 dev->mem_start = mem_ptr_phys;
755 dev->mem_end = mem_ptr_phys + lp->memory_size;
756 }
757
758 printk("hp100: ");
759 if (lp->lan_type != HP100_LAN_ERR)
760 printk("Adapter is attached to ");
761 switch (lp->lan_type) {
762 case HP100_LAN_100:
763 printk("100Mb/s Voice Grade AnyLAN network.\n");
764 break;
765 case HP100_LAN_10:
766 printk("10Mb/s network (10baseT).\n");
767 break;
768 case HP100_LAN_COAX:
769 printk("10Mb/s network (coax).\n");
770 break;
771 default:
772 printk("Warning! Link down.\n");
773 }
774
775 err = register_netdev(dev);
776 if (err)
777 goto out3;
778
779 return 0;
780 out3:
781 if (local_mode == 1)
782 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
783 lp->page_vaddr_algn,
784 virt_to_whatever(dev, lp->page_vaddr_algn));
785 if (mem_ptr_virt)
786 iounmap(mem_ptr_virt);
787 out2:
788 release_region(ioaddr, HP100_REGION_SIZE);
789 out1:
790 return err;
791 }
792
793 /* This procedure puts the card into a stable init state */
794 static void hp100_hwinit(struct net_device *dev)
795 {
796 int ioaddr = dev->base_addr;
797 struct hp100_private *lp = netdev_priv(dev);
798
799 #ifdef HP100_DEBUG_B
800 hp100_outw(0x4202, TRACE);
801 printk("hp100: %s: hwinit\n", dev->name);
802 #endif
803
804 /* Initialise the card. -------------------------------------------- */
805
806 /* Clear all pending Ints and disable Ints */
807 hp100_page(PERFORMANCE);
808 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
809 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
810
811 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
812 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
813
814 if (lp->mode == 1) {
815 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
816 wait();
817 } else {
818 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
819 hp100_cascade_reset(dev, 1);
820 hp100_page(MAC_CTRL);
821 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
822 }
823
824 /* Initiate EEPROM reload */
825 hp100_load_eeprom(dev, 0);
826
827 wait();
828
829 /* Go into reset again. */
830 hp100_cascade_reset(dev, 1);
831
832 /* Set Option Registers to a safe state */
833 hp100_outw(HP100_DEBUG_EN |
834 HP100_RX_HDR |
835 HP100_EE_EN |
836 HP100_BM_WRITE |
837 HP100_BM_READ | HP100_RESET_HB |
838 HP100_FAKE_INT |
839 HP100_INT_EN |
840 HP100_MEM_EN |
841 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
842
843 hp100_outw(HP100_TRI_INT |
844 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
845
846 hp100_outb(HP100_PRIORITY_TX |
847 HP100_ADV_NXT_PKT |
848 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
849
850 /* TODO: Configure MMU for Ram Test. */
851 /* TODO: Ram Test. */
852
853 /* Re-check if adapter is still at same i/o location */
854 /* (If the base i/o in eeprom has been changed but the */
855 /* registers had not been changed, a reload of the eeprom */
856 /* would move the adapter to the address stored in eeprom */
857
858 /* TODO: Code to implement. */
859
860 /* Until here it was code from HWdiscover procedure. */
861 /* Next comes code from mmuinit procedure of SCO BM driver which is
862 * called from HWconfigure in the SCO driver. */
863
864 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
865 * multicast filter...
866 */
867 hp100_mmuinit(dev);
868
869 /* We don't turn the interrupts on here - this is done by start_interface. */
870 wait(); /* TODO: Do we really need this? */
871
872 /* Enable Hardware (e.g. unreset) */
873 hp100_cascade_reset(dev, 0);
874
875 /* ------- initialisation complete ----------- */
876
877 /* Finally try to log in the Hub if there may be a VG connection. */
878 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
879 hp100_login_to_vg_hub(dev, 0); /* relogin */
880
881 }
882
883
884 /*
885 * mmuinit - Reinitialise Cascade MMU and MAC settings.
886 * Note: Must already be in reset and leaves card in reset.
887 */
888 static void hp100_mmuinit(struct net_device *dev)
889 {
890 int ioaddr = dev->base_addr;
891 struct hp100_private *lp = netdev_priv(dev);
892 int i;
893
894 #ifdef HP100_DEBUG_B
895 hp100_outw(0x4203, TRACE);
896 printk("hp100: %s: mmuinit\n", dev->name);
897 #endif
898
899 #ifdef HP100_DEBUG
900 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
901 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
902 return;
903 }
904 #endif
905
906 /* Make sure IRQs are masked off and ack'ed. */
907 hp100_page(PERFORMANCE);
908 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
909 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
910
911 /*
912 * Enable Hardware
913 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
914 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
915 * - Clear Priority, Advance Pkt and Xmit Cmd
916 */
917
918 hp100_outw(HP100_DEBUG_EN |
919 HP100_RX_HDR |
920 HP100_EE_EN | HP100_RESET_HB |
921 HP100_IO_EN |
922 HP100_FAKE_INT |
923 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
924
925 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
926
927 if (lp->mode == 1) { /* busmaster */
928 hp100_outw(HP100_BM_WRITE |
929 HP100_BM_READ |
930 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
931 } else if (lp->mode == 2) { /* memory mapped */
932 hp100_outw(HP100_BM_WRITE |
933 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
934 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
935 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
936 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
937 } else if (lp->mode == 3) { /* i/o mapped mode */
938 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
939 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
940 }
941
942 hp100_page(HW_MAP);
943 hp100_outb(0, EARLYRXCFG);
944 hp100_outw(0, EARLYTXCFG);
945
946 /*
947 * Enable Bus Master mode
948 */
949 if (lp->mode == 1) { /* busmaster */
950 /* Experimental: Set some PCI configuration bits */
951 hp100_page(HW_MAP);
952 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
953 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
954
955 /* PCI Bus failures should result in a Misc. Interrupt */
956 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
957
958 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
959 hp100_page(HW_MAP);
960 /* Use Burst Mode and switch on PAGE_CK */
961 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
962 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
963 hp100_orb(HP100_BM_PAGE_CK, BM);
964 hp100_orb(HP100_BM_MASTER, BM);
965 } else { /* not busmaster */
966
967 hp100_page(HW_MAP);
968 hp100_andb(~HP100_BM_MASTER, BM);
969 }
970
971 /*
972 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
973 */
974 hp100_page(MMU_CFG);
975 if (lp->mode == 1) { /* only needed for Busmaster */
976 int xmit_stop, recv_stop;
977
978 if ((lp->chip == HP100_CHIPID_RAINIER)
979 || (lp->chip == HP100_CHIPID_SHASTA)) {
980 int pdl_stop;
981
982 /*
983 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
984 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
985 * to the next higher 1k boundary) bytes for the rx-pdl's
986 * Note: For non-etr chips the transmit stop register must be
987 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
988 */
989 pdl_stop = lp->memory_size;
990 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
991 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
992 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
993 #ifdef HP100_DEBUG_BM
994 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
995 #endif
996 } else {
997 /* ETR chip (Lassen) in busmaster mode */
998 xmit_stop = (lp->memory_size) - 1;
999 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1000 }
1001
1002 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1003 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1004 #ifdef HP100_DEBUG_BM
1005 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1006 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1007 #endif
1008 } else {
1009 /* Slave modes (memory mapped and programmed io) */
1010 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1011 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1012 #ifdef HP100_DEBUG
1013 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1014 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1015 #endif
1016 }
1017
1018 /* Write MAC address into page 1 */
1019 hp100_page(MAC_ADDRESS);
1020 for (i = 0; i < 6; i++)
1021 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1022
1023 /* Zero the multicast hash registers */
1024 for (i = 0; i < 8; i++)
1025 hp100_outb(0x0, HASH_BYTE0 + i);
1026
1027 /* Set up MAC defaults */
1028 hp100_page(MAC_CTRL);
1029
1030 /* Go to LAN Page and zero all filter bits */
1031 /* Zero accept error, accept multicast, accept broadcast and accept */
1032 /* all directed packet bits */
1033 hp100_andb(~(HP100_RX_EN |
1034 HP100_TX_EN |
1035 HP100_ACC_ERRORED |
1036 HP100_ACC_MC |
1037 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1038
1039 hp100_outb(0x00, MAC_CFG_2);
1040
1041 /* Zero the frame format bit. This works around a training bug in the */
1042 /* new hubs. */
1043 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1044
1045 if (lp->priority_tx)
1046 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1047 else
1048 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1049
1050 hp100_outb(HP100_ADV_NXT_PKT |
1051 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1052
1053 /* If busmaster, initialize the PDLs */
1054 if (lp->mode == 1)
1055 hp100_init_pdls(dev);
1056
1057 /* Go to performance page and initalize isr and imr registers */
1058 hp100_page(PERFORMANCE);
1059 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1060 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1061 }
1062
1063 /*
1064 * open/close functions
1065 */
1066
1067 static int hp100_open(struct net_device *dev)
1068 {
1069 struct hp100_private *lp = netdev_priv(dev);
1070 #ifdef HP100_DEBUG_B
1071 int ioaddr = dev->base_addr;
1072 #endif
1073
1074 #ifdef HP100_DEBUG_B
1075 hp100_outw(0x4204, TRACE);
1076 printk("hp100: %s: open\n", dev->name);
1077 #endif
1078
1079 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1080 if (request_irq(dev->irq, hp100_interrupt,
1081 lp->bus == HP100_BUS_PCI || lp->bus ==
1082 HP100_BUS_EISA ? IRQF_SHARED : IRQF_DISABLED,
1083 "hp100", dev)) {
1084 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1085 return -EAGAIN;
1086 }
1087
1088 dev->trans_start = jiffies;
1089 netif_start_queue(dev);
1090
1091 lp->lan_type = hp100_sense_lan(dev);
1092 lp->mac1_mode = HP100_MAC1MODE3;
1093 lp->mac2_mode = HP100_MAC2MODE3;
1094 memset(&lp->hash_bytes, 0x00, 8);
1095
1096 hp100_stop_interface(dev);
1097
1098 hp100_hwinit(dev);
1099
1100 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1101
1102 return 0;
1103 }
1104
1105 /* The close function is called when the interface is to be brought down */
1106 static int hp100_close(struct net_device *dev)
1107 {
1108 int ioaddr = dev->base_addr;
1109 struct hp100_private *lp = netdev_priv(dev);
1110
1111 #ifdef HP100_DEBUG_B
1112 hp100_outw(0x4205, TRACE);
1113 printk("hp100: %s: close\n", dev->name);
1114 #endif
1115
1116 hp100_page(PERFORMANCE);
1117 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1118
1119 hp100_stop_interface(dev);
1120
1121 if (lp->lan_type == HP100_LAN_100)
1122 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1123
1124 netif_stop_queue(dev);
1125
1126 free_irq(dev->irq, dev);
1127
1128 #ifdef HP100_DEBUG
1129 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1130 hp100_inw(OPTION_LSW));
1131 #endif
1132
1133 return 0;
1134 }
1135
1136
1137 /*
1138 * Configure the PDL Rx rings and LAN
1139 */
1140 static void hp100_init_pdls(struct net_device *dev)
1141 {
1142 struct hp100_private *lp = netdev_priv(dev);
1143 hp100_ring_t *ringptr;
1144 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1145 int i;
1146
1147 #ifdef HP100_DEBUG_B
1148 int ioaddr = dev->base_addr;
1149 #endif
1150
1151 #ifdef HP100_DEBUG_B
1152 hp100_outw(0x4206, TRACE);
1153 printk("hp100: %s: init pdls\n", dev->name);
1154 #endif
1155
1156 if (!lp->page_vaddr_algn)
1157 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1158 else {
1159 /* pageptr shall point into the DMA accessible memory region */
1160 /* we use this pointer to status the upper limit of allocated */
1161 /* memory in the allocated page. */
1162 /* note: align the pointers to the pci cache line size */
1163 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1164 pageptr = lp->page_vaddr_algn;
1165
1166 lp->rxrcommit = 0;
1167 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1168
1169 /* Initialise Rx Ring */
1170 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1171 lp->rxring[i].next = ringptr;
1172 ringptr = &(lp->rxring[i]);
1173 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1174 }
1175
1176 /* Initialise Tx Ring */
1177 lp->txrcommit = 0;
1178 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1179 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1180 lp->txring[i].next = ringptr;
1181 ringptr = &(lp->txring[i]);
1182 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1183 }
1184 }
1185 }
1186
1187
1188 /* These functions "format" the entries in the pdl structure */
1189 /* They return how much memory the fragments need. */
1190 static int hp100_init_rxpdl(struct net_device *dev,
1191 register hp100_ring_t * ringptr,
1192 register u32 * pdlptr)
1193 {
1194 /* pdlptr is starting address for this pdl */
1195
1196 if (0 != (((unsigned long) pdlptr) & 0xf))
1197 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1198 dev->name, (unsigned long) pdlptr);
1199
1200 ringptr->pdl = pdlptr + 1;
1201 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1202 ringptr->skb = (void *) NULL;
1203
1204 /*
1205 * Write address and length of first PDL Fragment (which is used for
1206 * storing the RX-Header
1207 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1208 * store this information. (PDH is at offset 0x04)
1209 */
1210 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1211
1212 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1213 *(pdlptr + 3) = 4; /* Length Frag 1 */
1214
1215 return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
1216 }
1217
1218
1219 static int hp100_init_txpdl(struct net_device *dev,
1220 register hp100_ring_t * ringptr,
1221 register u32 * pdlptr)
1222 {
1223 if (0 != (((unsigned long) pdlptr) & 0xf))
1224 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1225
1226 ringptr->pdl = pdlptr; /* +1; */
1227 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1228 ringptr->skb = (void *) NULL;
1229
1230 return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
1231 }
1232
1233 /*
1234 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1235 * for possible odd word alignment rounding up to next dword and set PDL
1236 * address for fragment#2
1237 * Returns: 0 if unable to allocate skb_buff
1238 * 1 if successful
1239 */
1240 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1241 struct net_device *dev)
1242 {
1243 #ifdef HP100_DEBUG_B
1244 int ioaddr = dev->base_addr;
1245 #endif
1246 #ifdef HP100_DEBUG_BM
1247 u_int *p;
1248 #endif
1249
1250 #ifdef HP100_DEBUG_B
1251 hp100_outw(0x4207, TRACE);
1252 printk("hp100: %s: build rx pdl\n", dev->name);
1253 #endif
1254
1255 /* Allocate skb buffer of maximum size */
1256 /* Note: This depends on the alloc_skb functions allocating more
1257 * space than requested, i.e. aligning to 16bytes */
1258
1259 ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
1260
1261 if (NULL != ringptr->skb) {
1262 /*
1263 * Reserve 2 bytes at the head of the buffer to land the IP header
1264 * on a long word boundary (According to the Network Driver section
1265 * in the Linux KHG, this should help to increase performance.)
1266 */
1267 skb_reserve(ringptr->skb, 2);
1268
1269 ringptr->skb->dev = dev;
1270 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1271
1272 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1273 /* Note: 1st Fragment is used for the 4 byte packet status
1274 * (receive header). Its PDL entries are set up by init_rxpdl. So
1275 * here we only have to set up the PDL fragment entries for the data
1276 * part. Those 4 bytes will be stored in the DMA memory region
1277 * directly before the PDL.
1278 */
1279 #ifdef HP100_DEBUG_BM
1280 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1281 dev->name, (u_int) ringptr->pdl,
1282 ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
1283 (unsigned int) ringptr->skb->data);
1284 #endif
1285
1286 /* Conversion to new PCI API : map skbuf data to PCI bus.
1287 * Doc says it's OK for EISA as well - Jean II */
1288 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1289 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1290 ringptr->skb->data);
1291 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1292
1293 #ifdef HP100_DEBUG_BM
1294 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1295 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1296 #endif
1297 return (1);
1298 }
1299 /* else: */
1300 /* alloc_skb failed (no memory) -> still can receive the header
1301 * fragment into PDL memory. make PDL safe by clearing msgptr and
1302 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1303 */
1304 #ifdef HP100_DEBUG_BM
1305 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1306 #endif
1307
1308 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1309
1310 return (0);
1311 }
1312
1313 /*
1314 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1315 *
1316 * Makes assumption that skb's are always contiguous memory areas and
1317 * therefore PDLs contain only 2 physical fragments.
1318 * - While the number of Rx PDLs with buffers is less than maximum
1319 * a. Get a maximum packet size skb
1320 * b. Put the physical address of the buffer into the PDL.
1321 * c. Output physical address of PDL to adapter.
1322 */
1323 static void hp100_rxfill(struct net_device *dev)
1324 {
1325 int ioaddr = dev->base_addr;
1326
1327 struct hp100_private *lp = netdev_priv(dev);
1328 hp100_ring_t *ringptr;
1329
1330 #ifdef HP100_DEBUG_B
1331 hp100_outw(0x4208, TRACE);
1332 printk("hp100: %s: rxfill\n", dev->name);
1333 #endif
1334
1335 hp100_page(PERFORMANCE);
1336
1337 while (lp->rxrcommit < MAX_RX_PDL) {
1338 /*
1339 ** Attempt to get a buffer and build a Rx PDL.
1340 */
1341 ringptr = lp->rxrtail;
1342 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1343 return; /* None available, return */
1344 }
1345
1346 /* Hand this PDL over to the card */
1347 /* Note: This needs performance page selected! */
1348 #ifdef HP100_DEBUG_BM
1349 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1350 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1351 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1352 #endif
1353
1354 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1355
1356 lp->rxrcommit += 1;
1357 lp->rxrtail = ringptr->next;
1358 }
1359 }
1360
1361 /*
1362 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1363 */
1364
1365 static void hp100_BM_shutdown(struct net_device *dev)
1366 {
1367 int ioaddr = dev->base_addr;
1368 struct hp100_private *lp = netdev_priv(dev);
1369 unsigned long time;
1370
1371 #ifdef HP100_DEBUG_B
1372 hp100_outw(0x4209, TRACE);
1373 printk("hp100: %s: bm shutdown\n", dev->name);
1374 #endif
1375
1376 hp100_page(PERFORMANCE);
1377 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1378 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1379
1380 /* Ensure Interrupts are off */
1381 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1382
1383 /* Disable all MAC activity */
1384 hp100_page(MAC_CTRL);
1385 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1386
1387 /* If cascade MMU is not already in reset */
1388 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1389 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1390 * MMU pointers will not be reset out from underneath
1391 */
1392 hp100_page(MAC_CTRL);
1393 for (time = 0; time < 5000; time++) {
1394 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1395 break;
1396 }
1397
1398 /* Shutdown algorithm depends on the generation of Cascade */
1399 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1400 /* Disable Busmaster mode and wait for bit to go to zero. */
1401 hp100_page(HW_MAP);
1402 hp100_andb(~HP100_BM_MASTER, BM);
1403 /* 100 ms timeout */
1404 for (time = 0; time < 32000; time++) {
1405 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1406 break;
1407 }
1408 } else { /* Shasta or Rainier Shutdown/Reset */
1409 /* To ensure all bus master inloading activity has ceased,
1410 * wait for no Rx PDAs or no Rx packets on card.
1411 */
1412 hp100_page(PERFORMANCE);
1413 /* 100 ms timeout */
1414 for (time = 0; time < 10000; time++) {
1415 /* RX_PDL: PDLs not executed. */
1416 /* RX_PKT_CNT: RX'd packets on card. */
1417 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1418 break;
1419 }
1420
1421 if (time >= 10000)
1422 printk("hp100: %s: BM shutdown error.\n", dev->name);
1423
1424 /* To ensure all bus master outloading activity has ceased,
1425 * wait until the Tx PDA count goes to zero or no more Tx space
1426 * available in the Tx region of the card.
1427 */
1428 /* 100 ms timeout */
1429 for (time = 0; time < 10000; time++) {
1430 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1431 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1432 break;
1433 }
1434
1435 /* Disable Busmaster mode */
1436 hp100_page(HW_MAP);
1437 hp100_andb(~HP100_BM_MASTER, BM);
1438 } /* end of shutdown procedure for non-etr parts */
1439
1440 hp100_cascade_reset(dev, 1);
1441 }
1442 hp100_page(PERFORMANCE);
1443 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1444 /* Busmaster mode should be shut down now. */
1445 }
1446
1447 static int hp100_check_lan(struct net_device *dev)
1448 {
1449 struct hp100_private *lp = netdev_priv(dev);
1450
1451 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1452 hp100_stop_interface(dev);
1453 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1454 printk("hp100: %s: no connection found - check wire\n", dev->name);
1455 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1456 return -EIO;
1457 }
1458 if (lp->lan_type == HP100_LAN_100)
1459 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1460 hp100_start_interface(dev);
1461 }
1462 return 0;
1463 }
1464
1465 /*
1466 * transmit functions
1467 */
1468
1469 /* tx function for busmaster mode */
1470 static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1471 {
1472 unsigned long flags;
1473 int i, ok_flag;
1474 int ioaddr = dev->base_addr;
1475 struct hp100_private *lp = netdev_priv(dev);
1476 hp100_ring_t *ringptr;
1477
1478 #ifdef HP100_DEBUG_B
1479 hp100_outw(0x4210, TRACE);
1480 printk("hp100: %s: start_xmit_bm\n", dev->name);
1481 #endif
1482
1483 if (skb == NULL) {
1484 return 0;
1485 }
1486
1487 if (skb->len <= 0)
1488 return 0;
1489
1490 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1491 return 0;
1492
1493 /* Get Tx ring tail pointer */
1494 if (lp->txrtail->next == lp->txrhead) {
1495 /* No memory. */
1496 #ifdef HP100_DEBUG
1497 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1498 #endif
1499 /* not waited long enough since last tx? */
1500 if (time_before(jiffies, dev->trans_start + HZ))
1501 return -EAGAIN;
1502
1503 if (hp100_check_lan(dev))
1504 return -EIO;
1505
1506 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1507 /* we have a 100Mb/s adapter but it isn't connected to hub */
1508 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1509 hp100_stop_interface(dev);
1510 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1511 hp100_start_interface(dev);
1512 } else {
1513 spin_lock_irqsave(&lp->lock, flags);
1514 hp100_ints_off(); /* Useful ? Jean II */
1515 i = hp100_sense_lan(dev);
1516 hp100_ints_on();
1517 spin_unlock_irqrestore(&lp->lock, flags);
1518 if (i == HP100_LAN_ERR)
1519 printk("hp100: %s: link down detected\n", dev->name);
1520 else if (lp->lan_type != i) { /* cable change! */
1521 /* it's very hard - all network settings must be changed!!! */
1522 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1523 lp->lan_type = i;
1524 hp100_stop_interface(dev);
1525 if (lp->lan_type == HP100_LAN_100)
1526 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1527 hp100_start_interface(dev);
1528 } else {
1529 printk("hp100: %s: interface reset\n", dev->name);
1530 hp100_stop_interface(dev);
1531 if (lp->lan_type == HP100_LAN_100)
1532 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1533 hp100_start_interface(dev);
1534 }
1535 }
1536
1537 dev->trans_start = jiffies;
1538 return -EAGAIN;
1539 }
1540
1541 /*
1542 * we have to turn int's off before modifying this, otherwise
1543 * a tx_pdl_cleanup could occur at the same time
1544 */
1545 spin_lock_irqsave(&lp->lock, flags);
1546 ringptr = lp->txrtail;
1547 lp->txrtail = ringptr->next;
1548
1549 /* Check whether packet has minimal packet size */
1550 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1551 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1552
1553 ringptr->skb = skb;
1554 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1555 if (lp->chip == HP100_CHIPID_SHASTA) {
1556 /* TODO:Could someone who has the EISA card please check if this works? */
1557 ringptr->pdl[2] = i;
1558 } else { /* Lassen */
1559 /* In the PDL, don't use the padded size but the real packet size: */
1560 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1561 }
1562 /* Conversion to new PCI API : map skbuf data to PCI bus.
1563 * Doc says it's OK for EISA as well - Jean II */
1564 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1565
1566 /* Hand this PDL to the card. */
1567 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1568
1569 lp->txrcommit++;
1570 spin_unlock_irqrestore(&lp->lock, flags);
1571
1572 /* Update statistics */
1573 lp->stats.tx_packets++;
1574 lp->stats.tx_bytes += skb->len;
1575 dev->trans_start = jiffies;
1576
1577 return 0;
1578 }
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 commited 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 */
1588 static void hp100_clean_txring(struct net_device *dev)
1589 {
1590 struct hp100_private *lp = netdev_priv(dev);
1591 int ioaddr = dev->base_addr;
1592 int donecount;
1593
1594 #ifdef HP100_DEBUG_B
1595 hp100_outw(0x4211, TRACE);
1596 printk("hp100: %s: clean txring\n", dev->name);
1597 #endif
1598
1599 /* How many PDLs have been transmitted? */
1600 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1601
1602 #ifdef HP100_DEBUG
1603 if (donecount > MAX_TX_PDL)
1604 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1605 #endif
1606
1607 for (; 0 != donecount; donecount--) {
1608 #ifdef HP100_DEBUG_BM
1609 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1610 dev->name, (u_int) lp->txrhead->skb->data,
1611 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1612 #endif
1613 /* Conversion to new PCI API : NOP */
1614 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1615 dev_kfree_skb_any(lp->txrhead->skb);
1616 lp->txrhead->skb = (void *) NULL;
1617 lp->txrhead = lp->txrhead->next;
1618 lp->txrcommit--;
1619 }
1620 }
1621
1622 /* tx function for slave modes */
1623 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1624 {
1625 unsigned long flags;
1626 int i, ok_flag;
1627 int ioaddr = dev->base_addr;
1628 u_short val;
1629 struct hp100_private *lp = netdev_priv(dev);
1630
1631 #ifdef HP100_DEBUG_B
1632 hp100_outw(0x4212, TRACE);
1633 printk("hp100: %s: start_xmit\n", dev->name);
1634 #endif
1635
1636 if (skb == NULL) {
1637 return 0;
1638 }
1639
1640 if (skb->len <= 0)
1641 return 0;
1642
1643 if (hp100_check_lan(dev))
1644 return -EIO;
1645
1646 /* If there is not enough free memory on the card... */
1647 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1648 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1649 #ifdef HP100_DEBUG
1650 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1651 #endif
1652 /* not waited long enough since last failed tx try? */
1653 if (time_before(jiffies, dev->trans_start + HZ)) {
1654 #ifdef HP100_DEBUG
1655 printk("hp100: %s: trans_start timing problem\n",
1656 dev->name);
1657 #endif
1658 return -EAGAIN;
1659 }
1660 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1661 /* we have a 100Mb/s adapter but it isn't connected to hub */
1662 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1663 hp100_stop_interface(dev);
1664 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1665 hp100_start_interface(dev);
1666 } else {
1667 spin_lock_irqsave(&lp->lock, flags);
1668 hp100_ints_off(); /* Useful ? Jean II */
1669 i = hp100_sense_lan(dev);
1670 hp100_ints_on();
1671 spin_unlock_irqrestore(&lp->lock, flags);
1672 if (i == HP100_LAN_ERR)
1673 printk("hp100: %s: link down detected\n", dev->name);
1674 else if (lp->lan_type != i) { /* cable change! */
1675 /* it's very hard - all network setting must be changed!!! */
1676 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1677 lp->lan_type = i;
1678 hp100_stop_interface(dev);
1679 if (lp->lan_type == HP100_LAN_100)
1680 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1681 hp100_start_interface(dev);
1682 } else {
1683 printk("hp100: %s: interface reset\n", dev->name);
1684 hp100_stop_interface(dev);
1685 if (lp->lan_type == HP100_LAN_100)
1686 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1687 hp100_start_interface(dev);
1688 mdelay(1);
1689 }
1690 }
1691 dev->trans_start = jiffies;
1692 return -EAGAIN;
1693 }
1694
1695 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1696 #ifdef HP100_DEBUG_TX
1697 printk("hp100: %s: start_xmit: busy\n", dev->name);
1698 #endif
1699 }
1700
1701 spin_lock_irqsave(&lp->lock, flags);
1702 hp100_ints_off();
1703 val = hp100_inw(IRQ_STATUS);
1704 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1705 * when the current packet being transmitted on the wire is completed. */
1706 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1707 #ifdef HP100_DEBUG_TX
1708 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1709 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1710 #endif
1711
1712 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1713 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1714
1715 hp100_outw(i, DATA32); /* tell card the total packet length */
1716 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1717
1718 if (lp->mode == 2) { /* memory mapped */
1719 /* Note: The J2585B needs alignment to 32bits here! */
1720 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1721 if (!ok_flag)
1722 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1723 } else { /* programmed i/o */
1724 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1725 (skb->len + 3) >> 2);
1726 if (!ok_flag)
1727 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1728 hp100_outl(0, DATA32);
1729 }
1730
1731 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1732
1733 lp->stats.tx_packets++;
1734 lp->stats.tx_bytes += skb->len;
1735 dev->trans_start = jiffies;
1736 hp100_ints_on();
1737 spin_unlock_irqrestore(&lp->lock, flags);
1738
1739 dev_kfree_skb_any(skb);
1740
1741 #ifdef HP100_DEBUG_TX
1742 printk("hp100: %s: start_xmit: end\n", dev->name);
1743 #endif
1744
1745 return 0;
1746 }
1747
1748
1749 /*
1750 * Receive Function (Non-Busmaster mode)
1751 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1752 * packet counter is non-zero.
1753 * For non-busmaster, this function does the whole work of transfering
1754 * the packet to the host memory and then up to higher layers via skb
1755 * and netif_rx.
1756 */
1757
1758 static void hp100_rx(struct net_device *dev)
1759 {
1760 int packets, pkt_len;
1761 int ioaddr = dev->base_addr;
1762 struct hp100_private *lp = netdev_priv(dev);
1763 u_int header;
1764 struct sk_buff *skb;
1765
1766 #ifdef DEBUG_B
1767 hp100_outw(0x4213, TRACE);
1768 printk("hp100: %s: rx\n", dev->name);
1769 #endif
1770
1771 /* First get indication of received lan packet */
1772 /* RX_PKT_CND indicates the number of packets which have been fully */
1773 /* received onto the card but have not been fully transferred of the card */
1774 packets = hp100_inb(RX_PKT_CNT);
1775 #ifdef HP100_DEBUG_RX
1776 if (packets > 1)
1777 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1778 #endif
1779
1780 while (packets-- > 0) {
1781 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1782 /* really advanced to the next packet. */
1783 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1784 #ifdef HP100_DEBUG_RX
1785 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1786 #endif
1787 }
1788
1789 /* First we get the header, which contains information about the */
1790 /* actual length of the received packet. */
1791 if (lp->mode == 2) { /* memory mapped mode */
1792 header = readl(lp->mem_ptr_virt);
1793 } else /* programmed i/o */
1794 header = hp100_inl(DATA32);
1795
1796 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1797
1798 #ifdef HP100_DEBUG_RX
1799 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1800 dev->name, header & HP100_PKT_LEN_MASK,
1801 (header >> 16) & 0xfff8, (header >> 16) & 7);
1802 #endif
1803
1804 /* Now we allocate the skb and transfer the data into it. */
1805 skb = dev_alloc_skb(pkt_len+2);
1806 if (skb == NULL) { /* Not enough memory->drop packet */
1807 #ifdef HP100_DEBUG
1808 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1809 dev->name, pkt_len);
1810 #endif
1811 lp->stats.rx_dropped++;
1812 } else { /* skb successfully allocated */
1813
1814 u_char *ptr;
1815
1816 skb_reserve(skb,2);
1817
1818 /* ptr to start of the sk_buff data area */
1819 skb_put(skb, pkt_len);
1820 ptr = skb->data;
1821
1822 /* Now transfer the data from the card into that area */
1823 if (lp->mode == 2)
1824 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1825 else /* io mapped */
1826 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1827
1828 skb->protocol = eth_type_trans(skb, dev);
1829
1830 #ifdef HP100_DEBUG_RX
1831 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1832 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1833 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1834 ptr[9], ptr[10], ptr[11]);
1835 #endif
1836 netif_rx(skb);
1837 dev->last_rx = jiffies;
1838 lp->stats.rx_packets++;
1839 lp->stats.rx_bytes += pkt_len;
1840 }
1841
1842 /* Indicate the card that we have got the packet */
1843 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1844
1845 switch (header & 0x00070000) {
1846 case (HP100_MULTI_ADDR_HASH << 16):
1847 case (HP100_MULTI_ADDR_NO_HASH << 16):
1848 lp->stats.multicast++;
1849 break;
1850 }
1851 } /* end of while(there are packets) loop */
1852 #ifdef HP100_DEBUG_RX
1853 printk("hp100_rx: %s: end\n", dev->name);
1854 #endif
1855 }
1856
1857 /*
1858 * Receive Function for Busmaster Mode
1859 */
1860 static void hp100_rx_bm(struct net_device *dev)
1861 {
1862 int ioaddr = dev->base_addr;
1863 struct hp100_private *lp = netdev_priv(dev);
1864 hp100_ring_t *ptr;
1865 u_int header;
1866 int pkt_len;
1867
1868 #ifdef HP100_DEBUG_B
1869 hp100_outw(0x4214, TRACE);
1870 printk("hp100: %s: rx_bm\n", dev->name);
1871 #endif
1872
1873 #ifdef HP100_DEBUG
1874 if (0 == lp->rxrcommit) {
1875 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1876 return;
1877 } else
1878 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1879 * the cards BM engine */
1880 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1881 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1882 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1883 lp->rxrcommit);
1884 return;
1885 }
1886 #endif
1887
1888 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1889 /*
1890 * The packet was received into the pdl pointed to by lp->rxrhead (
1891 * the oldest pdl in the ring
1892 */
1893
1894 /* First we get the header, which contains information about the */
1895 /* actual length of the received packet. */
1896
1897 ptr = lp->rxrhead;
1898
1899 header = *(ptr->pdl - 1);
1900 pkt_len = (header & HP100_PKT_LEN_MASK);
1901
1902 /* Conversion to new PCI API : NOP */
1903 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1904
1905 #ifdef HP100_DEBUG_BM
1906 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1907 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1908 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1909 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",
1910 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1911 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1912 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1913 #endif
1914
1915 if ((pkt_len >= MIN_ETHER_SIZE) &&
1916 (pkt_len <= MAX_ETHER_SIZE)) {
1917 if (ptr->skb == NULL) {
1918 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1919 /* can happen if we only allocated room for the pdh due to memory shortage. */
1920 lp->stats.rx_dropped++;
1921 } else {
1922 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1923 ptr->skb->protocol =
1924 eth_type_trans(ptr->skb, dev);
1925
1926 netif_rx(ptr->skb); /* Up and away... */
1927
1928 dev->last_rx = jiffies;
1929 lp->stats.rx_packets++;
1930 lp->stats.rx_bytes += pkt_len;
1931 }
1932
1933 switch (header & 0x00070000) {
1934 case (HP100_MULTI_ADDR_HASH << 16):
1935 case (HP100_MULTI_ADDR_NO_HASH << 16):
1936 lp->stats.multicast++;
1937 break;
1938 }
1939 } else {
1940 #ifdef HP100_DEBUG
1941 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1942 #endif
1943 if (ptr->skb != NULL)
1944 dev_kfree_skb_any(ptr->skb);
1945 lp->stats.rx_errors++;
1946 }
1947
1948 lp->rxrhead = lp->rxrhead->next;
1949
1950 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1951 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1952 /* No space for skb, header can still be received. */
1953 #ifdef HP100_DEBUG
1954 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1955 #endif
1956 return;
1957 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1958 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1959 lp->rxrtail = lp->rxrtail->next;
1960 }
1961
1962 }
1963 }
1964
1965 /*
1966 * statistics
1967 */
1968 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1969 {
1970 unsigned long flags;
1971 int ioaddr = dev->base_addr;
1972 struct hp100_private *lp = netdev_priv(dev);
1973
1974 #ifdef HP100_DEBUG_B
1975 hp100_outw(0x4215, TRACE);
1976 #endif
1977
1978 spin_lock_irqsave(&lp->lock, flags);
1979 hp100_ints_off(); /* Useful ? Jean II */
1980 hp100_update_stats(dev);
1981 hp100_ints_on();
1982 spin_unlock_irqrestore(&lp->lock, flags);
1983 return &(lp->stats);
1984 }
1985
1986 static void hp100_update_stats(struct net_device *dev)
1987 {
1988 int ioaddr = dev->base_addr;
1989 u_short val;
1990 struct hp100_private *lp = netdev_priv(dev);
1991
1992 #ifdef HP100_DEBUG_B
1993 hp100_outw(0x4216, TRACE);
1994 printk("hp100: %s: update-stats\n", dev->name);
1995 #endif
1996
1997 /* Note: Statistics counters clear when read. */
1998 hp100_page(MAC_CTRL);
1999 val = hp100_inw(DROPPED) & 0x0fff;
2000 lp->stats.rx_errors += val;
2001 lp->stats.rx_over_errors += val;
2002 val = hp100_inb(CRC);
2003 lp->stats.rx_errors += val;
2004 lp->stats.rx_crc_errors += val;
2005 val = hp100_inb(ABORT);
2006 lp->stats.tx_errors += val;
2007 lp->stats.tx_aborted_errors += val;
2008 hp100_page(PERFORMANCE);
2009 }
2010
2011 static void hp100_misc_interrupt(struct net_device *dev)
2012 {
2013 #ifdef HP100_DEBUG_B
2014 int ioaddr = dev->base_addr;
2015 #endif
2016 struct hp100_private *lp = netdev_priv(dev);
2017
2018 #ifdef HP100_DEBUG_B
2019 int ioaddr = dev->base_addr;
2020 hp100_outw(0x4216, TRACE);
2021 printk("hp100: %s: misc_interrupt\n", dev->name);
2022 #endif
2023
2024 /* Note: Statistics counters clear when read. */
2025 lp->stats.rx_errors++;
2026 lp->stats.tx_errors++;
2027 }
2028
2029 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2030 {
2031 unsigned long flags;
2032
2033 #ifdef HP100_DEBUG_B
2034 hp100_outw(0x4217, TRACE);
2035 printk("hp100: %s: clear_stats\n", dev->name);
2036 #endif
2037
2038 spin_lock_irqsave(&lp->lock, flags);
2039 hp100_page(MAC_CTRL); /* get all statistics bytes */
2040 hp100_inw(DROPPED);
2041 hp100_inb(CRC);
2042 hp100_inb(ABORT);
2043 hp100_page(PERFORMANCE);
2044 spin_unlock_irqrestore(&lp->lock, flags);
2045 }
2046
2047
2048 /*
2049 * multicast setup
2050 */
2051
2052 /*
2053 * Set or clear the multicast filter for this adapter.
2054 */
2055
2056 static void hp100_set_multicast_list(struct net_device *dev)
2057 {
2058 unsigned long flags;
2059 int ioaddr = dev->base_addr;
2060 struct hp100_private *lp = netdev_priv(dev);
2061
2062 #ifdef HP100_DEBUG_B
2063 hp100_outw(0x4218, TRACE);
2064 printk("hp100: %s: set_mc_list\n", dev->name);
2065 #endif
2066
2067 spin_lock_irqsave(&lp->lock, flags);
2068 hp100_ints_off();
2069 hp100_page(MAC_CTRL);
2070 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2071
2072 if (dev->flags & IFF_PROMISC) {
2073 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2074 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2075 memset(&lp->hash_bytes, 0xff, 8);
2076 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2077 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2078 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2079 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2080 if (dev->flags & IFF_ALLMULTI) {
2081 /* set hash filter to receive all multicast packets */
2082 memset(&lp->hash_bytes, 0xff, 8);
2083 } else {
2084 int i, j, idx;
2085 u_char *addrs;
2086 struct dev_mc_list *dmi;
2087
2088 memset(&lp->hash_bytes, 0x00, 8);
2089 #ifdef HP100_DEBUG
2090 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2091 #endif
2092 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2093 addrs = dmi->dmi_addr;
2094 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2095 #ifdef HP100_DEBUG
2096 printk("hp100: %s: multicast = %pM, ",
2097 dev->name, addrs);
2098 #endif
2099 for (j = idx = 0; j < 6; j++) {
2100 idx ^= *addrs++ & 0x3f;
2101 printk(":%02x:", idx);
2102 }
2103 #ifdef HP100_DEBUG
2104 printk("idx = %i\n", idx);
2105 #endif
2106 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2107 }
2108 }
2109 }
2110 #else
2111 memset(&lp->hash_bytes, 0xff, 8);
2112 #endif
2113 } else {
2114 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2115 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2116 memset(&lp->hash_bytes, 0x00, 8);
2117 }
2118
2119 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2120 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2121 int i;
2122
2123 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2124 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2125 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2126
2127 hp100_page(MAC_ADDRESS);
2128 for (i = 0; i < 8; i++)
2129 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2130 #ifdef HP100_DEBUG
2131 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2132 dev->name, lp->mac1_mode, lp->mac2_mode,
2133 lp->hash_bytes[0], lp->hash_bytes[1],
2134 lp->hash_bytes[2], lp->hash_bytes[3],
2135 lp->hash_bytes[4], lp->hash_bytes[5],
2136 lp->hash_bytes[6], lp->hash_bytes[7]);
2137 #endif
2138
2139 if (lp->lan_type == HP100_LAN_100) {
2140 #ifdef HP100_DEBUG
2141 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2142 #endif
2143 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2144 }
2145 } else {
2146 int i;
2147 u_char old_hash_bytes[8];
2148
2149 hp100_page(MAC_ADDRESS);
2150 for (i = 0; i < 8; i++)
2151 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2152 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2153 for (i = 0; i < 8; i++)
2154 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2155 #ifdef HP100_DEBUG
2156 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2157 dev->name, lp->hash_bytes[0],
2158 lp->hash_bytes[1], lp->hash_bytes[2],
2159 lp->hash_bytes[3], lp->hash_bytes[4],
2160 lp->hash_bytes[5], lp->hash_bytes[6],
2161 lp->hash_bytes[7]);
2162 #endif
2163
2164 if (lp->lan_type == HP100_LAN_100) {
2165 #ifdef HP100_DEBUG
2166 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2167 #endif
2168 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2169 }
2170 }
2171 }
2172
2173 hp100_page(MAC_CTRL);
2174 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2175 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2176
2177 hp100_page(PERFORMANCE);
2178 hp100_ints_on();
2179 spin_unlock_irqrestore(&lp->lock, flags);
2180 }
2181
2182 /*
2183 * hardware interrupt handling
2184 */
2185
2186 static irqreturn_t hp100_interrupt(int irq, void *dev_id)
2187 {
2188 struct net_device *dev = (struct net_device *) dev_id;
2189 struct hp100_private *lp = netdev_priv(dev);
2190
2191 int ioaddr;
2192 u_int val;
2193
2194 if (dev == NULL)
2195 return IRQ_NONE;
2196 ioaddr = dev->base_addr;
2197
2198 spin_lock(&lp->lock);
2199
2200 hp100_ints_off();
2201
2202 #ifdef HP100_DEBUG_B
2203 hp100_outw(0x4219, TRACE);
2204 #endif
2205
2206 /* hp100_page( PERFORMANCE ); */
2207 val = hp100_inw(IRQ_STATUS);
2208 #ifdef HP100_DEBUG_IRQ
2209 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2210 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2211 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2212 #endif
2213
2214 if (val == 0) { /* might be a shared interrupt */
2215 spin_unlock(&lp->lock);
2216 hp100_ints_on();
2217 return IRQ_NONE;
2218 }
2219 /* We're only interested in those interrupts we really enabled. */
2220 /* val &= hp100_inw( IRQ_MASK ); */
2221
2222 /*
2223 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2224 * is considered executed whenever the RX_PDL data structure is no longer
2225 * needed.
2226 */
2227 if (val & HP100_RX_PDL_FILL_COMPL) {
2228 if (lp->mode == 1)
2229 hp100_rx_bm(dev);
2230 else {
2231 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2232 }
2233 }
2234
2235 /*
2236 * The RX_PACKET interrupt is set, when the receive packet counter is
2237 * non zero. We use this interrupt for receiving in slave mode. In
2238 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2239 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2240 * we somehow have missed a rx_pdl_fill_compl interrupt.
2241 */
2242
2243 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2244 if (lp->mode != 1) /* non busmaster */
2245 hp100_rx(dev);
2246 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2247 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2248 hp100_rx_bm(dev);
2249 }
2250 }
2251
2252 /*
2253 * Ack. that we have noticed the interrupt and thereby allow next one.
2254 * Note that this is now done after the slave rx function, since first
2255 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2256 * on the J2573.
2257 */
2258 hp100_outw(val, IRQ_STATUS);
2259
2260 /*
2261 * RX_ERROR is set when a packet is dropped due to no memory resources on
2262 * the card or when a RCV_ERR occurs.
2263 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2264 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2265 */
2266 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2267 #ifdef HP100_DEBUG_IRQ
2268 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2269 #endif
2270 hp100_update_stats(dev);
2271 if (lp->mode == 1) {
2272 hp100_rxfill(dev);
2273 hp100_clean_txring(dev);
2274 }
2275 }
2276
2277 /*
2278 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2279 */
2280 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2281 hp100_rxfill(dev);
2282
2283 /*
2284 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2285 * is completed
2286 */
2287 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2288 hp100_clean_txring(dev);
2289
2290 /*
2291 * MISC_ERROR is set when either the LAN link goes down or a detected
2292 * bus error occurs.
2293 */
2294 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2295 #ifdef HP100_DEBUG_IRQ
2296 printk
2297 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2298 dev->name);
2299 #endif
2300 if (lp->mode == 1) {
2301 hp100_clean_txring(dev);
2302 hp100_rxfill(dev);
2303 }
2304 hp100_misc_interrupt(dev);
2305 }
2306
2307 spin_unlock(&lp->lock);
2308 hp100_ints_on();
2309 return IRQ_HANDLED;
2310 }
2311
2312 /*
2313 * some misc functions
2314 */
2315
2316 static void hp100_start_interface(struct net_device *dev)
2317 {
2318 unsigned long flags;
2319 int ioaddr = dev->base_addr;
2320 struct hp100_private *lp = netdev_priv(dev);
2321
2322 #ifdef HP100_DEBUG_B
2323 hp100_outw(0x4220, TRACE);
2324 printk("hp100: %s: hp100_start_interface\n", dev->name);
2325 #endif
2326
2327 spin_lock_irqsave(&lp->lock, flags);
2328
2329 /* Ensure the adapter does not want to request an interrupt when */
2330 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2331 hp100_page(PERFORMANCE);
2332 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2333 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2334 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2335 OPTION_LSW);
2336 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2337 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2338
2339 if (lp->mode == 1) {
2340 /* Make sure BM bit is set... */
2341 hp100_page(HW_MAP);
2342 hp100_orb(HP100_BM_MASTER, BM);
2343 hp100_rxfill(dev);
2344 } else if (lp->mode == 2) {
2345 /* Enable memory mapping. Note: Don't do this when busmaster. */
2346 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2347 }
2348
2349 hp100_page(PERFORMANCE);
2350 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2351 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2352
2353 /* enable a few interrupts: */
2354 if (lp->mode == 1) { /* busmaster mode */
2355 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2356 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2357 /* HP100_RX_PACKET | */
2358 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2359 /* HP100_TX_PDA_ZERO | */
2360 HP100_TX_COMPLETE |
2361 /* HP100_MISC_ERROR | */
2362 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2363 } else {
2364 hp100_outw(HP100_RX_PACKET |
2365 HP100_RX_ERROR | HP100_SET_HB |
2366 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2367 }
2368
2369 /* Note : before hp100_set_multicast_list(), because it will play with
2370 * spinlock itself... Jean II */
2371 spin_unlock_irqrestore(&lp->lock, flags);
2372
2373 /* Enable MAC Tx and RX, set MAC modes, ... */
2374 hp100_set_multicast_list(dev);
2375 }
2376
2377 static void hp100_stop_interface(struct net_device *dev)
2378 {
2379 struct hp100_private *lp = netdev_priv(dev);
2380 int ioaddr = dev->base_addr;
2381 u_int val;
2382
2383 #ifdef HP100_DEBUG_B
2384 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2385 hp100_outw(0x4221, TRACE);
2386 #endif
2387
2388 if (lp->mode == 1)
2389 hp100_BM_shutdown(dev);
2390 else {
2391 /* Note: MMAP_DIS will be reenabled by start_interface */
2392 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2393 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2394 OPTION_LSW);
2395 val = hp100_inw(OPTION_LSW);
2396
2397 hp100_page(MAC_CTRL);
2398 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2399
2400 if (!(val & HP100_HW_RST))
2401 return; /* If reset, imm. return ... */
2402 /* ... else: busy wait until idle */
2403 for (val = 0; val < 6000; val++)
2404 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2405 hp100_page(PERFORMANCE);
2406 return;
2407 }
2408 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2409 hp100_page(PERFORMANCE);
2410 }
2411 }
2412
2413 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2414 {
2415 int i;
2416 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2417
2418 #ifdef HP100_DEBUG_B
2419 hp100_outw(0x4222, TRACE);
2420 #endif
2421
2422 hp100_page(EEPROM_CTRL);
2423 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2424 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2425 for (i = 0; i < 10000; i++)
2426 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2427 return;
2428 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2429 }
2430
2431 /* Sense connection status.
2432 * return values: LAN_10 - Connected to 10Mbit/s network
2433 * LAN_100 - Connected to 100Mbit/s network
2434 * LAN_ERR - not connected or 100Mbit/s Hub down
2435 */
2436 static int hp100_sense_lan(struct net_device *dev)
2437 {
2438 int ioaddr = dev->base_addr;
2439 u_short val_VG, val_10;
2440 struct hp100_private *lp = netdev_priv(dev);
2441
2442 #ifdef HP100_DEBUG_B
2443 hp100_outw(0x4223, TRACE);
2444 #endif
2445
2446 hp100_page(MAC_CTRL);
2447 val_10 = hp100_inb(10_LAN_CFG_1);
2448 val_VG = hp100_inb(VG_LAN_CFG_1);
2449 hp100_page(PERFORMANCE);
2450 #ifdef HP100_DEBUG
2451 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2452 dev->name, val_VG, val_10);
2453 #endif
2454
2455 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2456 return HP100_LAN_10;
2457
2458 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2459 /*
2460 * This can be overriden by dos utility, so if this has no effect,
2461 * perhaps you need to download that utility from HP and set card
2462 * back to "auto detect".
2463 */
2464 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2465 hp100_page(MAC_CTRL);
2466 hp100_outb(val_10, 10_LAN_CFG_1);
2467 hp100_page(PERFORMANCE);
2468 return HP100_LAN_COAX;
2469 }
2470
2471 /* Those cards don't have a 100 Mbit connector */
2472 if ( !strcmp(lp->id, "HWP1920") ||
2473 (lp->pci_dev &&
2474 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2475 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2476 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2477 return HP100_LAN_ERR;
2478
2479 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2480 return HP100_LAN_100;
2481 return HP100_LAN_ERR;
2482 }
2483
2484 static int hp100_down_vg_link(struct net_device *dev)
2485 {
2486 struct hp100_private *lp = netdev_priv(dev);
2487 int ioaddr = dev->base_addr;
2488 unsigned long time;
2489 long savelan, newlan;
2490
2491 #ifdef HP100_DEBUG_B
2492 hp100_outw(0x4224, TRACE);
2493 printk("hp100: %s: down_vg_link\n", dev->name);
2494 #endif
2495
2496 hp100_page(MAC_CTRL);
2497 time = jiffies + (HZ / 4);
2498 do {
2499 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2500 break;
2501 if (!in_interrupt())
2502 schedule_timeout_interruptible(1);
2503 } while (time_after(time, jiffies));
2504
2505 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2506 return 0;
2507
2508 /* Drop the VG Link by clearing the link up cmd and load addr. */
2509
2510 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2511 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2512
2513 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2514 time = jiffies + (HZ / 2);
2515 do {
2516 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2517 break;
2518 if (!in_interrupt())
2519 schedule_timeout_interruptible(1);
2520 } while (time_after(time, jiffies));
2521
2522 #ifdef HP100_DEBUG
2523 if (time_after_eq(jiffies, time))
2524 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2525 #endif
2526
2527 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2528 /* logout under traffic (even though all the status bits are cleared), */
2529 /* do this workaround to get the Rev 1 MAC in its idle state */
2530 if (lp->chip == HP100_CHIPID_LASSEN) {
2531 /* Reset VG MAC to insure it leaves the logoff state even if */
2532 /* the Hub is still emitting tones */
2533 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2534 udelay(1500); /* wait for >1ms */
2535 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2536 udelay(1500);
2537 }
2538
2539 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2540 /* to get the VG mac to full reset. This is not req.d with later chips */
2541 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2542 /* selected again! This will be left to the connect hub function to */
2543 /* perform if desired. */
2544 if (lp->chip == HP100_CHIPID_LASSEN) {
2545 /* Have to write to 10 and 100VG control registers simultaneously */
2546 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2547 newlan &= ~(HP100_VG_SEL << 16);
2548 newlan |= (HP100_DOT3_MAC) << 8;
2549 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2550 hp100_outl(newlan, 10_LAN_CFG_1);
2551
2552 /* Conditionally stall for 5sec on VG selected. */
2553 time = jiffies + (HZ * 5);
2554 do {
2555 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2556 break;
2557 if (!in_interrupt())
2558 schedule_timeout_interruptible(1);
2559 } while (time_after(time, jiffies));
2560
2561 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2562 hp100_outl(savelan, 10_LAN_CFG_1);
2563 }
2564
2565 time = jiffies + (3 * HZ); /* Timeout 3s */
2566 do {
2567 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2568 break;
2569 if (!in_interrupt())
2570 schedule_timeout_interruptible(1);
2571 } while (time_after(time, jiffies));
2572
2573 if (time_before_eq(time, jiffies)) {
2574 #ifdef HP100_DEBUG
2575 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2576 #endif
2577 return -EIO;
2578 }
2579
2580 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2581 do {
2582 if (!in_interrupt())
2583 schedule_timeout_interruptible(1);
2584 } while (time_after(time, jiffies));
2585
2586 return 0;
2587 }
2588
2589 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2590 {
2591 int ioaddr = dev->base_addr;
2592 struct hp100_private *lp = netdev_priv(dev);
2593 u_short val = 0;
2594 unsigned long time;
2595 int startst;
2596
2597 #ifdef HP100_DEBUG_B
2598 hp100_outw(0x4225, TRACE);
2599 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2600 #endif
2601
2602 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2603 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2604 * promiscuous mode change)
2605 */
2606 hp100_page(MAC_CTRL);
2607 startst = hp100_inb(VG_LAN_CFG_1);
2608 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2609 #ifdef HP100_DEBUG_TRAINING
2610 printk("hp100: %s: Start training\n", dev->name);
2611 #endif
2612
2613 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2614 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2615
2616 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2617 /* entry then temporarily put them into force 100Mbit mode */
2618 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2619 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2620
2621 /* Drop the VG link by zeroing Link Up Command and Load Address */
2622 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2623
2624 #ifdef HP100_DEBUG_TRAINING
2625 printk("hp100: %s: Bring down the link\n", dev->name);
2626 #endif
2627
2628 /* Wait for link to drop */
2629 time = jiffies + (HZ / 10);
2630 do {
2631 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2632 break;
2633 if (!in_interrupt())
2634 schedule_timeout_interruptible(1);
2635 } while (time_after(time, jiffies));
2636
2637 /* Start an addressed training and optionally request promiscuous port */
2638 if ((dev->flags) & IFF_PROMISC) {
2639 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2640 if (lp->chip == HP100_CHIPID_LASSEN)
2641 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2642 } else {
2643 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2644 /* For ETR parts we need to reset the prom. bit in the training
2645 * register, otherwise promiscious mode won't be disabled.
2646 */
2647 if (lp->chip == HP100_CHIPID_LASSEN) {
2648 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2649 }
2650 }
2651
2652 /* With ETR parts, frame format request bits can be set. */
2653 if (lp->chip == HP100_CHIPID_LASSEN)
2654 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2655
2656 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2657
2658 /* Note: Next wait could be omitted for Hood and earlier chips under */
2659 /* certain circumstances */
2660 /* TODO: check if hood/earlier and skip wait. */
2661
2662 /* Wait for either short timeout for VG tones or long for login */
2663 /* Wait for the card hardware to signalise link cable status ok... */
2664 hp100_page(MAC_CTRL);
2665 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2666 do {
2667 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2668 break;
2669 if (!in_interrupt())
2670 schedule_timeout_interruptible(1);
2671 } while (time_before(jiffies, time));
2672
2673 if (time_after_eq(jiffies, time)) {
2674 #ifdef HP100_DEBUG_TRAINING
2675 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2676 #endif
2677 } else {
2678 #ifdef HP100_DEBUG_TRAINING
2679 printk
2680 ("hp100: %s: HUB tones detected. Trying to train.\n",
2681 dev->name);
2682 #endif
2683
2684 time = jiffies + (2 * HZ); /* again a timeout */
2685 do {
2686 val = hp100_inb(VG_LAN_CFG_1);
2687 if ((val & (HP100_LINK_UP_ST))) {
2688 #ifdef HP100_DEBUG_TRAINING
2689 printk("hp100: %s: Passed training.\n", dev->name);
2690 #endif
2691 break;
2692 }
2693 if (!in_interrupt())
2694 schedule_timeout_interruptible(1);
2695 } while (time_after(time, jiffies));
2696 }
2697
2698 /* If LINK_UP_ST is set, then we are logged into the hub. */
2699 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2700 #ifdef HP100_DEBUG_TRAINING
2701 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2702 if (lp->chip == HP100_CHIPID_LASSEN) {
2703 val = hp100_inw(TRAIN_ALLOW);
2704 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2705 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2706 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2707 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2708 }
2709 #endif
2710 } else {
2711 /* If LINK_UP_ST is not set, login was not successful */
2712 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2713 if (lp->chip == HP100_CHIPID_LASSEN) {
2714 /* Check allowed Register to find out why there is a problem. */
2715 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2716 #ifdef HP100_DEBUG_TRAINING
2717 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2718 #endif
2719 if (val & HP100_MALLOW_ACCDENIED)
2720 printk("hp100: %s: HUB access denied.\n", dev->name);
2721 if (val & HP100_MALLOW_CONFIGURE)
2722 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2723 if (val & HP100_MALLOW_DUPADDR)
2724 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2725 }
2726 }
2727
2728 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2729 /* to auto-select mode */
2730
2731 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2732 hp100_page(MAC_CTRL);
2733 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2734 }
2735
2736 val = hp100_inb(VG_LAN_CFG_1);
2737
2738 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2739 hp100_page(PERFORMANCE);
2740 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2741
2742 if (val & HP100_LINK_UP_ST)
2743 return (0); /* login was ok */
2744 else {
2745 printk("hp100: %s: Training failed.\n", dev->name);
2746 hp100_down_vg_link(dev);
2747 return -EIO;
2748 }
2749 }
2750 /* no forced relogin & already link there->no training. */
2751 return -EIO;
2752 }
2753
2754 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2755 {
2756 int ioaddr = dev->base_addr;
2757 struct hp100_private *lp = netdev_priv(dev);
2758
2759 #ifdef HP100_DEBUG_B
2760 hp100_outw(0x4226, TRACE);
2761 printk("hp100: %s: cascade_reset\n", dev->name);
2762 #endif
2763
2764 if (enable) {
2765 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2766 if (lp->chip == HP100_CHIPID_LASSEN) {
2767 /* Lassen requires a PCI transmit fifo reset */
2768 hp100_page(HW_MAP);
2769 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2770 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2771 /* Wait for min. 300 ns */
2772 /* we can't use jiffies here, because it may be */
2773 /* that we have disabled the timer... */
2774 udelay(400);
2775 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2776 hp100_page(PERFORMANCE);
2777 }
2778 } else { /* bring out of reset */
2779 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2780 udelay(400);
2781 hp100_page(PERFORMANCE);
2782 }
2783 }
2784
2785 #ifdef HP100_DEBUG
2786 void hp100_RegisterDump(struct net_device *dev)
2787 {
2788 int ioaddr = dev->base_addr;
2789 int Page;
2790 int Register;
2791
2792 /* Dump common registers */
2793 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2794 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2795 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2796 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2797 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2798
2799 /* Dump paged registers */
2800 for (Page = 0; Page < 8; Page++) {
2801 /* Dump registers */
2802 printk("page: 0x%.2x\n", Page);
2803 outw(Page, ioaddr + 0x02);
2804 for (Register = 0x8; Register < 0x22; Register += 2) {
2805 /* Display Register contents except data port */
2806 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2807 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2808 }
2809 }
2810 }
2811 hp100_page(PERFORMANCE);
2812 }
2813 #endif
2814
2815
2816 static void cleanup_dev(struct net_device *d)
2817 {
2818 struct hp100_private *p = netdev_priv(d);
2819
2820 unregister_netdev(d);
2821 release_region(d->base_addr, HP100_REGION_SIZE);
2822
2823 if (p->mode == 1) /* busmaster */
2824 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2825 p->page_vaddr_algn,
2826 virt_to_whatever(d, p->page_vaddr_algn));
2827 if (p->mem_ptr_virt)
2828 iounmap(p->mem_ptr_virt);
2829
2830 free_netdev(d);
2831 }
2832
2833 #ifdef CONFIG_EISA
2834 static int __init hp100_eisa_probe (struct device *gendev)
2835 {
2836 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2837 struct eisa_device *edev = to_eisa_device(gendev);
2838 int err;
2839
2840 if (!dev)
2841 return -ENOMEM;
2842
2843 SET_NETDEV_DEV(dev, &edev->dev);
2844
2845 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2846 if (err)
2847 goto out1;
2848
2849 #ifdef HP100_DEBUG
2850 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2851 dev->base_addr);
2852 #endif
2853 gendev->driver_data = dev;
2854 return 0;
2855 out1:
2856 free_netdev(dev);
2857 return err;
2858 }
2859
2860 static int __devexit hp100_eisa_remove (struct device *gendev)
2861 {
2862 struct net_device *dev = gendev->driver_data;
2863 cleanup_dev(dev);
2864 return 0;
2865 }
2866
2867 static struct eisa_driver hp100_eisa_driver = {
2868 .id_table = hp100_eisa_tbl,
2869 .driver = {
2870 .name = "hp100",
2871 .probe = hp100_eisa_probe,
2872 .remove = __devexit_p (hp100_eisa_remove),
2873 }
2874 };
2875 #endif
2876
2877 #ifdef CONFIG_PCI
2878 static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2879 const struct pci_device_id *ent)
2880 {
2881 struct net_device *dev;
2882 int ioaddr;
2883 u_short pci_command;
2884 int err;
2885
2886 if (pci_enable_device(pdev))
2887 return -ENODEV;
2888
2889 dev = alloc_etherdev(sizeof(struct hp100_private));
2890 if (!dev) {
2891 err = -ENOMEM;
2892 goto out0;
2893 }
2894
2895 SET_NETDEV_DEV(dev, &pdev->dev);
2896
2897 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2898 if (!(pci_command & PCI_COMMAND_IO)) {
2899 #ifdef HP100_DEBUG
2900 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2901 #endif
2902 pci_command |= PCI_COMMAND_IO;
2903 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2904 }
2905
2906 if (!(pci_command & PCI_COMMAND_MASTER)) {
2907 #ifdef HP100_DEBUG
2908 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2909 #endif
2910 pci_command |= PCI_COMMAND_MASTER;
2911 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2912 }
2913
2914 ioaddr = pci_resource_start(pdev, 0);
2915 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2916 if (err)
2917 goto out1;
2918
2919 #ifdef HP100_DEBUG
2920 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2921 #endif
2922 pci_set_drvdata(pdev, dev);
2923 return 0;
2924 out1:
2925 free_netdev(dev);
2926 out0:
2927 pci_disable_device(pdev);
2928 return err;
2929 }
2930
2931 static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2932 {
2933 struct net_device *dev = pci_get_drvdata(pdev);
2934
2935 cleanup_dev(dev);
2936 pci_disable_device(pdev);
2937 }
2938
2939
2940 static struct pci_driver hp100_pci_driver = {
2941 .name = "hp100",
2942 .id_table = hp100_pci_tbl,
2943 .probe = hp100_pci_probe,
2944 .remove = __devexit_p(hp100_pci_remove),
2945 };
2946 #endif
2947
2948 /*
2949 * module section
2950 */
2951
2952 MODULE_LICENSE("GPL");
2953 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, "
2954 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2955 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2956
2957 /*
2958 * Note: to register three isa devices, use:
2959 * option hp100 hp100_port=0,0,0
2960 * to register one card at io 0x280 as eth239, use:
2961 * option hp100 hp100_port=0x280
2962 */
2963 #if defined(MODULE) && defined(CONFIG_ISA)
2964 #define HP100_DEVICES 5
2965 /* Parameters set by insmod */
2966 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2967 module_param_array(hp100_port, int, NULL, 0);
2968
2969 /* List of devices */
2970 static struct net_device *hp100_devlist[HP100_DEVICES];
2971
2972 static int __init hp100_isa_init(void)
2973 {
2974 struct net_device *dev;
2975 int i, err, cards = 0;
2976
2977 /* Don't autoprobe ISA bus */
2978 if (hp100_port[0] == 0)
2979 return -ENODEV;
2980
2981 /* Loop on all possible base addresses */
2982 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2983 dev = alloc_etherdev(sizeof(struct hp100_private));
2984 if (!dev) {
2985 printk(KERN_WARNING "hp100: no memory for network device\n");
2986 while (cards > 0)
2987 cleanup_dev(hp100_devlist[--cards]);
2988
2989 return -ENOMEM;
2990 }
2991
2992 err = hp100_isa_probe(dev, hp100_port[i]);
2993 if (!err)
2994 hp100_devlist[cards++] = dev;
2995 else
2996 free_netdev(dev);
2997 }
2998
2999 return cards > 0 ? 0 : -ENODEV;
3000 }
3001
3002 static void hp100_isa_cleanup(void)
3003 {
3004 int i;
3005
3006 for (i = 0; i < HP100_DEVICES; i++) {
3007 struct net_device *dev = hp100_devlist[i];
3008 if (dev)
3009 cleanup_dev(dev);
3010 }
3011 }
3012 #else
3013 #define hp100_isa_init() (0)
3014 #define hp100_isa_cleanup() do { } while(0)
3015 #endif
3016
3017 static int __init hp100_module_init(void)
3018 {
3019 int err;
3020
3021 err = hp100_isa_init();
3022 if (err && err != -ENODEV)
3023 goto out;
3024 #ifdef CONFIG_EISA
3025 err = eisa_driver_register(&hp100_eisa_driver);
3026 if (err && err != -ENODEV)
3027 goto out2;
3028 #endif
3029 #ifdef CONFIG_PCI
3030 err = pci_register_driver(&hp100_pci_driver);
3031 if (err && err != -ENODEV)
3032 goto out3;
3033 #endif
3034 out:
3035 return err;
3036 out3:
3037 #ifdef CONFIG_EISA
3038 eisa_driver_unregister (&hp100_eisa_driver);
3039 out2:
3040 #endif
3041 hp100_isa_cleanup();
3042 goto out;
3043 }
3044
3045
3046 static void __exit hp100_module_exit(void)
3047 {
3048 hp100_isa_cleanup();
3049 #ifdef CONFIG_EISA
3050 eisa_driver_unregister (&hp100_eisa_driver);
3051 #endif
3052 #ifdef CONFIG_PCI
3053 pci_unregister_driver (&hp100_pci_driver);
3054 #endif
3055 }
3056
3057 module_init(hp100_module_init)
3058 module_exit(hp100_module_exit)
3059
3060
3061 /*
3062 * Local variables:
3063 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"
3064 * c-indent-level: 2
3065 * tab-width: 8
3066 * End:
3067 */
x86 "subsystem" repository