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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / net / ethernet / hp / hp100.c
blob631dbc7b4dbb9b95985a8b4a2431cc648ef74644
1 /*
2 ** hp100.c
3 ** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
4 **
5 ** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 perex Exp perex $
6 **
7 ** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
8 ** Extended for new busmaster capable chipsets by
9 ** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
10 **
11 ** Maintained by: Jaroslav Kysela <perex@perex.cz>
12 **
13 ** This driver has only been tested with
14 ** -- HP J2585B 10/100 Mbit/s PCI Busmaster
15 ** -- HP J2585A 10/100 Mbit/s PCI
16 ** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
17 ** -- HP J2973A 10 Mbit/s PCI 10base-T
18 ** -- HP J2573 10/100 ISA
19 ** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
20 ** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
21 **
22 ** but it should also work with the other CASCADE based adapters.
23 **
24 ** TODO:
25 ** - J2573 seems to hang sometimes when in shared memory mode.
26 ** - Mode for Priority TX
27 ** - Check PCI registers, performance might be improved?
28 ** - To reduce interrupt load in busmaster, one could switch off
29 ** the interrupts that are used to refill the queues whenever the
30 ** queues are filled up to more than a certain threshold.
31 ** - some updates for EISA version of card
32 **
33 **
34 ** This code is free software; you can redistribute it and/or modify
35 ** it under the terms of the GNU General Public License as published by
36 ** the Free Software Foundation; either version 2 of the License, or
37 ** (at your option) any later version.
38 **
39 ** This code is distributed in the hope that it will be useful,
40 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
41 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42 ** GNU General Public License for more details.
43 **
44 ** You should have received a copy of the GNU General Public License
45 ** along with this program; if not, write to the Free Software
46 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
47 **
48 ** 1.57c -> 1.58
49 ** - used indent to change coding-style
50 ** - added KTI DP-200 EISA ID
51 ** - ioremap is also used for low (<1MB) memory (multi-architecture support)
52 **
53 ** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
54 ** - release resources on failure in init_module
55 **
56 ** 1.57 -> 1.57b - Jean II
57 ** - fix spinlocks, SMP is now working !
58 **
59 ** 1.56 -> 1.57
60 ** - updates for new PCI interface for 2.1 kernels
61 **
62 ** 1.55 -> 1.56
63 ** - removed printk in misc. interrupt and update statistics to allow
64 ** monitoring of card status
65 ** - timing changes in xmit routines, relogin to 100VG hub added when
66 ** driver does reset
67 ** - included fix for Compex FreedomLine PCI adapter
68 **
69 ** 1.54 -> 1.55
70 ** - fixed bad initialization in init_module
71 ** - added Compex FreedomLine adapter
72 ** - some fixes in card initialization
73 **
74 ** 1.53 -> 1.54
75 ** - added hardware multicast filter support (doesn't work)
76 ** - little changes in hp100_sense_lan routine
77 ** - added support for Coax and AUI (J2970)
78 ** - fix for multiple cards and hp100_mode parameter (insmod)
79 ** - fix for shared IRQ
80 **
81 ** 1.52 -> 1.53
82 ** - fixed bug in multicast support
83 **
84 */
85
86 #define HP100_DEFAULT_PRIORITY_TX 0
87
88 #undef HP100_DEBUG
89 #undef HP100_DEBUG_B /* Trace */
90 #undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
91
92 #undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
93 #undef HP100_DEBUG_TX
94 #undef HP100_DEBUG_IRQ
95 #undef HP100_DEBUG_RX
96
97 #undef HP100_MULTICAST_FILTER /* Need to be debugged... */
98
99 #include <linux/module.h>
100 #include <linux/kernel.h>
101 #include <linux/sched.h>
102 #include <linux/string.h>
103 #include <linux/errno.h>
104 #include <linux/ioport.h>
105 #include <linux/interrupt.h>
106 #include <linux/eisa.h>
107 #include <linux/pci.h>
108 #include <linux/dma-mapping.h>
109 #include <linux/spinlock.h>
110 #include <linux/netdevice.h>
111 #include <linux/etherdevice.h>
112 #include <linux/skbuff.h>
113 #include <linux/types.h>
114 #include <linux/delay.h>
115 #include <linux/init.h>
116 #include <linux/bitops.h>
117 #include <linux/jiffies.h>
118
119 #include <asm/io.h>
120
121 #include "hp100.h"
122
123 /*
124 * defines
125 */
126
127 #define HP100_BUS_ISA 0
128 #define HP100_BUS_EISA 1
129 #define HP100_BUS_PCI 2
130
131 #define HP100_REGION_SIZE 0x20 /* for ioports */
132 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
133
134 #define HP100_MAX_PACKET_SIZE (1536+4)
135 #define HP100_MIN_PACKET_SIZE 60
136
137 #ifndef HP100_DEFAULT_RX_RATIO
138 /* default - 75% onboard memory on the card are used for RX packets */
139 #define HP100_DEFAULT_RX_RATIO 75
140 #endif
141
142 #ifndef HP100_DEFAULT_PRIORITY_TX
143 /* default - don't enable transmit outgoing packets as priority */
144 #define HP100_DEFAULT_PRIORITY_TX 0
145 #endif
146
147 /*
148 * structures
149 */
150
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
172 /* Rings for busmaster mode: */
173 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
174 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
175 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
176 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
177
178 hp100_ring_t rxring[MAX_RX_PDL];
179 hp100_ring_t txring[MAX_TX_PDL];
180
181 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
182 u_long whatever_offset; /* Offset to bus/phys/dma address */
183 int rxrcommit; /* # Rx PDLs committed to adapter */
184 int txrcommit; /* # Tx PDLs committed to adapter */
185 };
186
187 /*
188 * variables
189 */
190 #ifdef CONFIG_ISA
191 static const char *hp100_isa_tbl[] = {
192 "HWPF150", /* HP J2573 rev A */
193 "HWP1950", /* HP J2573 */
194 };
195 #endif
196
197 static struct eisa_device_id hp100_eisa_tbl[] = {
198 { "HWPF180" }, /* HP J2577 rev A */
199 { "HWP1920" }, /* HP 27248B */
200 { "HWP1940" }, /* HP J2577 */
201 { "HWP1990" }, /* HP J2577 */
202 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
203 { "CPX0401" }, /* FreedomLine 100/VG */
204 { "" } /* Mandatory final entry ! */
205 };
206 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
207
208 static const struct pci_device_id hp100_pci_tbl[] = {
209 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
210 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
211 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
212 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
213 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
215 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
216 {} /* Terminating entry */
217 };
218 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
219
220 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
221 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
222 static int hp100_mode = 1;
223
224 module_param(hp100_rx_ratio, int, 0);
225 module_param(hp100_priority_tx, int, 0);
226 module_param(hp100_mode, int, 0);
227
228 /*
229 * prototypes
230 */
231
232 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
233 struct pci_dev *pci_dev);
234
235
236 static int hp100_open(struct net_device *dev);
237 static int hp100_close(struct net_device *dev);
238 static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
239 struct net_device *dev);
240 static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
241 struct net_device *dev);
242 static void hp100_rx(struct net_device *dev);
243 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
244 static void hp100_misc_interrupt(struct net_device *dev);
245 static void hp100_update_stats(struct net_device *dev);
246 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
247 static void hp100_set_multicast_list(struct net_device *dev);
248 static irqreturn_t hp100_interrupt(int irq, void *dev_id);
249 static void hp100_start_interface(struct net_device *dev);
250 static void hp100_stop_interface(struct net_device *dev);
251 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
252 static int hp100_sense_lan(struct net_device *dev);
253 static int hp100_login_to_vg_hub(struct net_device *dev,
254 u_short force_relogin);
255 static int hp100_down_vg_link(struct net_device *dev);
256 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
257 static void hp100_BM_shutdown(struct net_device *dev);
258 static void hp100_mmuinit(struct net_device *dev);
259 static void hp100_init_pdls(struct net_device *dev);
260 static int hp100_init_rxpdl(struct net_device *dev,
261 register hp100_ring_t * ringptr,
262 register u_int * pdlptr);
263 static int hp100_init_txpdl(struct net_device *dev,
264 register hp100_ring_t * ringptr,
265 register u_int * pdlptr);
266 static void hp100_rxfill(struct net_device *dev);
267 static void hp100_hwinit(struct net_device *dev);
268 static void hp100_clean_txring(struct net_device *dev);
269 #ifdef HP100_DEBUG
270 static void hp100_RegisterDump(struct net_device *dev);
271 #endif
272
273 /* Conversion to new PCI API :
274 * Convert an address in a kernel buffer to a bus/phys/dma address.
275 * This work *only* for memory fragments part of lp->page_vaddr,
276 * because it was properly DMA allocated via pci_alloc_consistent(),
277 * so we just need to "retrieve" the original mapping to bus/phys/dma
278 * address - Jean II */
279 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
280 {
281 struct hp100_private *lp = netdev_priv(dev);
282 return ((u_long) ptr) + lp->whatever_offset;
283 }
284
285 static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
286 {
287 return pci_map_single(lp->pci_dev, data,
288 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
289 }
290
291 /* TODO: This function should not really be needed in a good design... */
292 static void wait(void)
293 {
294 mdelay(1);
295 }
296
297 /*
298 * probe functions
299 * These functions should - if possible - avoid doing write operations
300 * since this could cause problems when the card is not installed.
301 */
302
303 /*
304 * Read board id and convert to string.
305 * Effectively same code as decode_eisa_sig
306 */
307 static const char *hp100_read_id(int ioaddr)
308 {
309 int i;
310 static char str[HP100_SIG_LEN];
311 unsigned char sig[4], sum;
312 unsigned short rev;
313
314 hp100_page(ID_MAC_ADDR);
315 sum = 0;
316 for (i = 0; i < 4; i++) {
317 sig[i] = hp100_inb(BOARD_ID + i);
318 sum += sig[i];
319 }
320
321 sum += hp100_inb(BOARD_ID + i);
322 if (sum != 0xff)
323 return NULL; /* bad checksum */
324
325 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
326 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
327 str[2] = (sig[1] & 0x1f) + ('A' - 1);
328 rev = (sig[2] << 8) | sig[3];
329 sprintf(str + 3, "%04X", rev);
330
331 return str;
332 }
333
334 #ifdef CONFIG_ISA
335 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
336 {
337 const char *sig;
338 int i;
339
340 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
341 goto err;
342
343 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
344 release_region(ioaddr, HP100_REGION_SIZE);
345 goto err;
346 }
347
348 sig = hp100_read_id(ioaddr);
349 release_region(ioaddr, HP100_REGION_SIZE);
350
351 if (sig == NULL)
352 goto err;
353
354 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
355 if (!strcmp(hp100_isa_tbl[i], sig))
356 break;
357
358 }
359
360 if (i < ARRAY_SIZE(hp100_isa_tbl))
361 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
362 err:
363 return -ENODEV;
364
365 }
366 /*
367 * Probe for ISA board.
368 * EISA and PCI are handled by device infrastructure.
369 */
370
371 static int __init hp100_isa_probe(struct net_device *dev, int addr)
372 {
373 int err = -ENODEV;
374
375 /* Probe for a specific ISA address */
376 if (addr > 0xff && addr < 0x400)
377 err = hp100_isa_probe1(dev, addr);
378
379 else if (addr != 0)
380 err = -ENXIO;
381
382 else {
383 /* Probe all ISA possible port regions */
384 for (addr = 0x100; addr < 0x400; addr += 0x20) {
385 err = hp100_isa_probe1(dev, addr);
386 if (!err)
387 break;
388 }
389 }
390 return err;
391 }
392 #endif /* CONFIG_ISA */
393
394 #if !defined(MODULE) && defined(CONFIG_ISA)
395 struct net_device * __init hp100_probe(int unit)
396 {
397 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
398 int err;
399
400 if (!dev)
401 return ERR_PTR(-ENODEV);
402
403 #ifdef HP100_DEBUG_B
404 hp100_outw(0x4200, TRACE);
405 printk("hp100: %s: probe\n", dev->name);
406 #endif
407
408 if (unit >= 0) {
409 sprintf(dev->name, "eth%d", unit);
410 netdev_boot_setup_check(dev);
411 }
412
413 err = hp100_isa_probe(dev, dev->base_addr);
414 if (err)
415 goto out;
416
417 return dev;
418 out:
419 free_netdev(dev);
420 return ERR_PTR(err);
421 }
422 #endif /* !MODULE && CONFIG_ISA */
423
424 static const struct net_device_ops hp100_bm_netdev_ops = {
425 .ndo_open = hp100_open,
426 .ndo_stop = hp100_close,
427 .ndo_start_xmit = hp100_start_xmit_bm,
428 .ndo_get_stats = hp100_get_stats,
429 .ndo_set_rx_mode = hp100_set_multicast_list,
430 .ndo_change_mtu = eth_change_mtu,
431 .ndo_set_mac_address = eth_mac_addr,
432 .ndo_validate_addr = eth_validate_addr,
433 };
434
435 static const struct net_device_ops hp100_netdev_ops = {
436 .ndo_open = hp100_open,
437 .ndo_stop = hp100_close,
438 .ndo_start_xmit = hp100_start_xmit,
439 .ndo_get_stats = hp100_get_stats,
440 .ndo_set_rx_mode = hp100_set_multicast_list,
441 .ndo_change_mtu = eth_change_mtu,
442 .ndo_set_mac_address = eth_mac_addr,
443 .ndo_validate_addr = eth_validate_addr,
444 };
445
446 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
447 struct pci_dev *pci_dev)
448 {
449 int i;
450 int err = -ENODEV;
451 const char *eid;
452 u_int chip;
453 u_char uc;
454 u_int memory_size = 0, virt_memory_size = 0;
455 u_short local_mode, lsw;
456 short mem_mapped;
457 unsigned long mem_ptr_phys;
458 void __iomem *mem_ptr_virt;
459 struct hp100_private *lp;
460
461 #ifdef HP100_DEBUG_B
462 hp100_outw(0x4201, TRACE);
463 printk("hp100: %s: probe1\n", dev->name);
464 #endif
465
466 /* memory region for programmed i/o */
467 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
468 goto out1;
469
470 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
471 goto out2;
472
473 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
474 #ifdef HP100_DEBUG
475 if (chip == HP100_CHIPID_SHASTA)
476 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
477 else if (chip == HP100_CHIPID_RAINIER)
478 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
479 else if (chip == HP100_CHIPID_LASSEN)
480 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
481 else
482 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
483 #endif
484
485 dev->base_addr = ioaddr;
486
487 eid = hp100_read_id(ioaddr);
488 if (eid == NULL) { /* bad checksum? */
489 printk(KERN_WARNING "%s: bad ID checksum at base port 0x%x\n",
490 __func__, ioaddr);
491 goto out2;
492 }
493
494 hp100_page(ID_MAC_ADDR);
495 for (i = uc = 0; i < 7; i++)
496 uc += hp100_inb(LAN_ADDR + i);
497 if (uc != 0xff) {
498 printk(KERN_WARNING
499 "%s: bad lan address checksum at port 0x%x)\n",
500 __func__, ioaddr);
501 err = -EIO;
502 goto out2;
503 }
504
505 /* Make sure, that all registers are correctly updated... */
506
507 hp100_load_eeprom(dev, ioaddr);
508 wait();
509
510 /*
511 * Determine driver operation mode
512 *
513 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
514 * force driver modes:
515 * hp100_mode=1 -> default, use busmaster mode if configured.
516 * hp100_mode=2 -> enable shared memory mode
517 * hp100_mode=3 -> force use of i/o mapped mode.
518 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
519 */
520
521 /*
522 * LSW values:
523 * 0x2278 -> J2585B, PnP shared memory mode
524 * 0x2270 -> J2585B, shared memory mode, 0xdc000
525 * 0xa23c -> J2585B, I/O mapped mode
526 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
527 * 0x2220 -> EISA HP, I/O (Shasta Chip)
528 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
529 */
530
531 #if 0
532 local_mode = 0x2270;
533 hp100_outw(0xfefe, OPTION_LSW);
534 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
535 #endif
536
537 /* hp100_mode value maybe used in future by another card */
538 local_mode = hp100_mode;
539 if (local_mode < 1 || local_mode > 4)
540 local_mode = 1; /* default */
541 #ifdef HP100_DEBUG
542 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
543 hp100_inw(OPTION_LSW));
544 #endif
545
546 if (local_mode == 3) {
547 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
548 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
549 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
550 printk("hp100: IO mapped mode forced.\n");
551 } else if (local_mode == 2) {
552 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
553 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
554 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
555 printk("hp100: Shared memory mode requested.\n");
556 } else if (local_mode == 4) {
557 if (chip == HP100_CHIPID_LASSEN) {
558 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
559 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
560 printk("hp100: Busmaster mode requested.\n");
561 }
562 local_mode = 1;
563 }
564
565 if (local_mode == 1) { /* default behaviour */
566 lsw = hp100_inw(OPTION_LSW);
567
568 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
569 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
570 #ifdef HP100_DEBUG
571 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
572 #endif
573 local_mode = 3;
574 } else if (chip == HP100_CHIPID_LASSEN &&
575 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
576 /* Conversion to new PCI API :
577 * I don't have the doc, but I assume that the card
578 * can map the full 32bit address space.
579 * Also, we can have EISA Busmaster cards (not tested),
580 * so beware !!! - Jean II */
581 if((bus == HP100_BUS_PCI) &&
582 (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)))) {
583 /* Gracefully fallback to shared memory */
584 goto busmasterfail;
585 }
586 printk("hp100: Busmaster mode enabled.\n");
587 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
588 } else {
589 busmasterfail:
590 #ifdef HP100_DEBUG
591 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
592 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
593 #endif
594 /* In this case, try shared memory mode */
595 local_mode = 2;
596 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
597 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
598 }
599 }
600 #ifdef HP100_DEBUG
601 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
602 #endif
603
604 /* Check for shared memory on the card, eventually remap it */
605 hp100_page(HW_MAP);
606 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
607 mem_ptr_phys = 0UL;
608 mem_ptr_virt = NULL;
609 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
610 virt_memory_size = 0;
611
612 /* For memory mapped or busmaster mode, we want the memory address */
613 if (mem_mapped || (local_mode == 1)) {
614 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
615 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
616
617 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
618 printk("hp100: Can only use programmed i/o mode.\n");
619 mem_ptr_phys = 0;
620 mem_mapped = 0;
621 local_mode = 3; /* Use programmed i/o */
622 }
623
624 /* We do not need access to shared memory in busmaster mode */
625 /* However in slave mode we need to remap high (>1GB) card memory */
626 if (local_mode != 1) { /* = not busmaster */
627 /* We try with smaller memory sizes, if ioremap fails */
628 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
629 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
630 #ifdef HP100_DEBUG
631 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
632 #endif
633 } else {
634 #ifdef HP100_DEBUG
635 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);
636 #endif
637 break;
638 }
639 }
640
641 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
642 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
643 local_mode = 3;
644 virt_memory_size = 0;
645 }
646 }
647 }
648
649 if (local_mode == 3) { /* io mapped forced */
650 mem_mapped = 0;
651 mem_ptr_phys = 0;
652 mem_ptr_virt = NULL;
653 printk("hp100: Using (slow) programmed i/o mode.\n");
654 }
655
656 /* Initialise the "private" data structure for this card. */
657 lp = netdev_priv(dev);
658
659 spin_lock_init(&lp->lock);
660 strlcpy(lp->id, eid, HP100_SIG_LEN);
661 lp->chip = chip;
662 lp->mode = local_mode;
663 lp->bus = bus;
664 lp->pci_dev = pci_dev;
665 lp->priority_tx = hp100_priority_tx;
666 lp->rx_ratio = hp100_rx_ratio;
667 lp->mem_ptr_phys = mem_ptr_phys;
668 lp->mem_ptr_virt = mem_ptr_virt;
669 hp100_page(ID_MAC_ADDR);
670 lp->soft_model = hp100_inb(SOFT_MODEL);
671 lp->mac1_mode = HP100_MAC1MODE3;
672 lp->mac2_mode = HP100_MAC2MODE3;
673 memset(&lp->hash_bytes, 0x00, 8);
674
675 dev->base_addr = ioaddr;
676
677 lp->memory_size = memory_size;
678 lp->virt_memory_size = virt_memory_size;
679 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
680
681 if (lp->mode == 1) /* busmaster */
682 dev->netdev_ops = &hp100_bm_netdev_ops;
683 else
684 dev->netdev_ops = &hp100_netdev_ops;
685
686 /* Ask the card for which IRQ line it is configured */
687 if (bus == HP100_BUS_PCI) {
688 dev->irq = pci_dev->irq;
689 } else {
690 hp100_page(HW_MAP);
691 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
692 if (dev->irq == 2)
693 dev->irq = 9;
694 }
695
696 if (lp->mode == 1) /* busmaster */
697 dev->dma = 4;
698
699 /* Ask the card for its MAC address and store it for later use. */
700 hp100_page(ID_MAC_ADDR);
701 for (i = uc = 0; i < 6; i++)
702 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
703
704 /* Reset statistics (counters) */
705 hp100_clear_stats(lp, ioaddr);
706
707 /* If busmaster mode is wanted, a dma-capable memory area is needed for
708 * the rx and tx PDLs
709 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
710 * needed for the allocation of the memory area.
711 */
712
713 /* TODO: We do not need this with old cards, where PDLs are stored
714 * in the cards shared memory area. But currently, busmaster has been
715 * implemented/tested only with the lassen chip anyway... */
716 if (lp->mode == 1) { /* busmaster */
717 dma_addr_t page_baddr;
718 /* Get physically continuous memory for TX & RX PDLs */
719 /* Conversion to new PCI API :
720 * Pages are always aligned and zeroed, no need to it ourself.
721 * Doc says should be OK for EISA bus as well - Jean II */
722 lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr);
723 if (!lp->page_vaddr_algn) {
724 err = -ENOMEM;
725 goto out_mem_ptr;
726 }
727 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
728
729 #ifdef HP100_DEBUG_BM
730 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);
731 #endif
732 lp->rxrcommit = lp->txrcommit = 0;
733 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
734 lp->txrhead = lp->txrtail = &(lp->txring[0]);
735 }
736
737 /* Initialise the card. */
738 /* (I'm not really sure if it's a good idea to do this during probing, but
739 * like this it's assured that the lan connection type can be sensed
740 * correctly)
741 */
742 hp100_hwinit(dev);
743
744 /* Try to find out which kind of LAN the card is connected to. */
745 lp->lan_type = hp100_sense_lan(dev);
746
747 /* Print out a message what about what we think we have probed. */
748 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
749 switch (bus) {
750 case HP100_BUS_EISA:
751 printk("EISA");
752 break;
753 case HP100_BUS_PCI:
754 printk("PCI");
755 break;
756 default:
757 printk("ISA");
758 break;
759 }
760 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
761
762 if (lp->mode == 2) { /* memory mapped */
763 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
764 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
765 if (mem_ptr_virt)
766 printk(" (virtual base %p)", mem_ptr_virt);
767 printk(".\n");
768
769 /* Set for info when doing ifconfig */
770 dev->mem_start = mem_ptr_phys;
771 dev->mem_end = mem_ptr_phys + lp->memory_size;
772 }
773
774 printk("hp100: ");
775 if (lp->lan_type != HP100_LAN_ERR)
776 printk("Adapter is attached to ");
777 switch (lp->lan_type) {
778 case HP100_LAN_100:
779 printk("100Mb/s Voice Grade AnyLAN network.\n");
780 break;
781 case HP100_LAN_10:
782 printk("10Mb/s network (10baseT).\n");
783 break;
784 case HP100_LAN_COAX:
785 printk("10Mb/s network (coax).\n");
786 break;
787 default:
788 printk("Warning! Link down.\n");
789 }
790
791 err = register_netdev(dev);
792 if (err)
793 goto out3;
794
795 return 0;
796 out3:
797 if (local_mode == 1)
798 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
799 lp->page_vaddr_algn,
800 virt_to_whatever(dev, lp->page_vaddr_algn));
801 out_mem_ptr:
802 if (mem_ptr_virt)
803 iounmap(mem_ptr_virt);
804 out2:
805 release_region(ioaddr, HP100_REGION_SIZE);
806 out1:
807 return err;
808 }
809
810 /* This procedure puts the card into a stable init state */
811 static void hp100_hwinit(struct net_device *dev)
812 {
813 int ioaddr = dev->base_addr;
814 struct hp100_private *lp = netdev_priv(dev);
815
816 #ifdef HP100_DEBUG_B
817 hp100_outw(0x4202, TRACE);
818 printk("hp100: %s: hwinit\n", dev->name);
819 #endif
820
821 /* Initialise the card. -------------------------------------------- */
822
823 /* Clear all pending Ints and disable Ints */
824 hp100_page(PERFORMANCE);
825 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
826 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
827
828 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
829 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
830
831 if (lp->mode == 1) {
832 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
833 wait();
834 } else {
835 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
836 hp100_cascade_reset(dev, 1);
837 hp100_page(MAC_CTRL);
838 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
839 }
840
841 /* Initiate EEPROM reload */
842 hp100_load_eeprom(dev, 0);
843
844 wait();
845
846 /* Go into reset again. */
847 hp100_cascade_reset(dev, 1);
848
849 /* Set Option Registers to a safe state */
850 hp100_outw(HP100_DEBUG_EN |
851 HP100_RX_HDR |
852 HP100_EE_EN |
853 HP100_BM_WRITE |
854 HP100_BM_READ | HP100_RESET_HB |
855 HP100_FAKE_INT |
856 HP100_INT_EN |
857 HP100_MEM_EN |
858 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
859
860 hp100_outw(HP100_TRI_INT |
861 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
862
863 hp100_outb(HP100_PRIORITY_TX |
864 HP100_ADV_NXT_PKT |
865 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
866
867 /* TODO: Configure MMU for Ram Test. */
868 /* TODO: Ram Test. */
869
870 /* Re-check if adapter is still at same i/o location */
871 /* (If the base i/o in eeprom has been changed but the */
872 /* registers had not been changed, a reload of the eeprom */
873 /* would move the adapter to the address stored in eeprom */
874
875 /* TODO: Code to implement. */
876
877 /* Until here it was code from HWdiscover procedure. */
878 /* Next comes code from mmuinit procedure of SCO BM driver which is
879 * called from HWconfigure in the SCO driver. */
880
881 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
882 * multicast filter...
883 */
884 hp100_mmuinit(dev);
885
886 /* We don't turn the interrupts on here - this is done by start_interface. */
887 wait(); /* TODO: Do we really need this? */
888
889 /* Enable Hardware (e.g. unreset) */
890 hp100_cascade_reset(dev, 0);
891
892 /* ------- initialisation complete ----------- */
893
894 /* Finally try to log in the Hub if there may be a VG connection. */
895 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
896 hp100_login_to_vg_hub(dev, 0); /* relogin */
897
898 }
899
900
901 /*
902 * mmuinit - Reinitialise Cascade MMU and MAC settings.
903 * Note: Must already be in reset and leaves card in reset.
904 */
905 static void hp100_mmuinit(struct net_device *dev)
906 {
907 int ioaddr = dev->base_addr;
908 struct hp100_private *lp = netdev_priv(dev);
909 int i;
910
911 #ifdef HP100_DEBUG_B
912 hp100_outw(0x4203, TRACE);
913 printk("hp100: %s: mmuinit\n", dev->name);
914 #endif
915
916 #ifdef HP100_DEBUG
917 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
918 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
919 return;
920 }
921 #endif
922
923 /* Make sure IRQs are masked off and ack'ed. */
924 hp100_page(PERFORMANCE);
925 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
926 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
927
928 /*
929 * Enable Hardware
930 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
931 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
932 * - Clear Priority, Advance Pkt and Xmit Cmd
933 */
934
935 hp100_outw(HP100_DEBUG_EN |
936 HP100_RX_HDR |
937 HP100_EE_EN | HP100_RESET_HB |
938 HP100_IO_EN |
939 HP100_FAKE_INT |
940 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
941
942 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
943
944 if (lp->mode == 1) { /* busmaster */
945 hp100_outw(HP100_BM_WRITE |
946 HP100_BM_READ |
947 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
948 } else if (lp->mode == 2) { /* memory mapped */
949 hp100_outw(HP100_BM_WRITE |
950 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
951 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
952 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
953 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
954 } else if (lp->mode == 3) { /* i/o mapped mode */
955 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
956 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
957 }
958
959 hp100_page(HW_MAP);
960 hp100_outb(0, EARLYRXCFG);
961 hp100_outw(0, EARLYTXCFG);
962
963 /*
964 * Enable Bus Master mode
965 */
966 if (lp->mode == 1) { /* busmaster */
967 /* Experimental: Set some PCI configuration bits */
968 hp100_page(HW_MAP);
969 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
970 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
971
972 /* PCI Bus failures should result in a Misc. Interrupt */
973 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
974
975 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
976 hp100_page(HW_MAP);
977 /* Use Burst Mode and switch on PAGE_CK */
978 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
979 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
980 hp100_orb(HP100_BM_PAGE_CK, BM);
981 hp100_orb(HP100_BM_MASTER, BM);
982 } else { /* not busmaster */
983
984 hp100_page(HW_MAP);
985 hp100_andb(~HP100_BM_MASTER, BM);
986 }
987
988 /*
989 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
990 */
991 hp100_page(MMU_CFG);
992 if (lp->mode == 1) { /* only needed for Busmaster */
993 int xmit_stop, recv_stop;
994
995 if ((lp->chip == HP100_CHIPID_RAINIER) ||
996 (lp->chip == HP100_CHIPID_SHASTA)) {
997 int pdl_stop;
998
999 /*
1000 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
1001 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
1002 * to the next higher 1k boundary) bytes for the rx-pdl's
1003 * Note: For non-etr chips the transmit stop register must be
1004 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
1005 */
1006 pdl_stop = lp->memory_size;
1007 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
1008 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
1009 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
1010 #ifdef HP100_DEBUG_BM
1011 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
1012 #endif
1013 } else {
1014 /* ETR chip (Lassen) in busmaster mode */
1015 xmit_stop = (lp->memory_size) - 1;
1016 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1017 }
1018
1019 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1020 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1021 #ifdef HP100_DEBUG_BM
1022 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1023 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1024 #endif
1025 } else {
1026 /* Slave modes (memory mapped and programmed io) */
1027 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1028 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1029 #ifdef HP100_DEBUG
1030 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1031 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1032 #endif
1033 }
1034
1035 /* Write MAC address into page 1 */
1036 hp100_page(MAC_ADDRESS);
1037 for (i = 0; i < 6; i++)
1038 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1039
1040 /* Zero the multicast hash registers */
1041 for (i = 0; i < 8; i++)
1042 hp100_outb(0x0, HASH_BYTE0 + i);
1043
1044 /* Set up MAC defaults */
1045 hp100_page(MAC_CTRL);
1046
1047 /* Go to LAN Page and zero all filter bits */
1048 /* Zero accept error, accept multicast, accept broadcast and accept */
1049 /* all directed packet bits */
1050 hp100_andb(~(HP100_RX_EN |
1051 HP100_TX_EN |
1052 HP100_ACC_ERRORED |
1053 HP100_ACC_MC |
1054 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1055
1056 hp100_outb(0x00, MAC_CFG_2);
1057
1058 /* Zero the frame format bit. This works around a training bug in the */
1059 /* new hubs. */
1060 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1061
1062 if (lp->priority_tx)
1063 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1064 else
1065 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1066
1067 hp100_outb(HP100_ADV_NXT_PKT |
1068 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1069
1070 /* If busmaster, initialize the PDLs */
1071 if (lp->mode == 1)
1072 hp100_init_pdls(dev);
1073
1074 /* Go to performance page and initialize isr and imr registers */
1075 hp100_page(PERFORMANCE);
1076 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1077 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1078 }
1079
1080 /*
1081 * open/close functions
1082 */
1083
1084 static int hp100_open(struct net_device *dev)
1085 {
1086 struct hp100_private *lp = netdev_priv(dev);
1087 #ifdef HP100_DEBUG_B
1088 int ioaddr = dev->base_addr;
1089 #endif
1090
1091 #ifdef HP100_DEBUG_B
1092 hp100_outw(0x4204, TRACE);
1093 printk("hp100: %s: open\n", dev->name);
1094 #endif
1095
1096 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1097 if (request_irq(dev->irq, hp100_interrupt,
1098 lp->bus == HP100_BUS_PCI || lp->bus ==
1099 HP100_BUS_EISA ? IRQF_SHARED : 0,
1100 dev->name, dev)) {
1101 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1102 return -EAGAIN;
1103 }
1104
1105 netif_trans_update(dev); /* prevent tx timeout */
1106 netif_start_queue(dev);
1107
1108 lp->lan_type = hp100_sense_lan(dev);
1109 lp->mac1_mode = HP100_MAC1MODE3;
1110 lp->mac2_mode = HP100_MAC2MODE3;
1111 memset(&lp->hash_bytes, 0x00, 8);
1112
1113 hp100_stop_interface(dev);
1114
1115 hp100_hwinit(dev);
1116
1117 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1118
1119 return 0;
1120 }
1121
1122 /* The close function is called when the interface is to be brought down */
1123 static int hp100_close(struct net_device *dev)
1124 {
1125 int ioaddr = dev->base_addr;
1126 struct hp100_private *lp = netdev_priv(dev);
1127
1128 #ifdef HP100_DEBUG_B
1129 hp100_outw(0x4205, TRACE);
1130 printk("hp100: %s: close\n", dev->name);
1131 #endif
1132
1133 hp100_page(PERFORMANCE);
1134 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1135
1136 hp100_stop_interface(dev);
1137
1138 if (lp->lan_type == HP100_LAN_100)
1139 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1140
1141 netif_stop_queue(dev);
1142
1143 free_irq(dev->irq, dev);
1144
1145 #ifdef HP100_DEBUG
1146 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1147 hp100_inw(OPTION_LSW));
1148 #endif
1149
1150 return 0;
1151 }
1152
1153
1154 /*
1155 * Configure the PDL Rx rings and LAN
1156 */
1157 static void hp100_init_pdls(struct net_device *dev)
1158 {
1159 struct hp100_private *lp = netdev_priv(dev);
1160 hp100_ring_t *ringptr;
1161 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1162 int i;
1163
1164 #ifdef HP100_DEBUG_B
1165 int ioaddr = dev->base_addr;
1166 #endif
1167
1168 #ifdef HP100_DEBUG_B
1169 hp100_outw(0x4206, TRACE);
1170 printk("hp100: %s: init pdls\n", dev->name);
1171 #endif
1172
1173 if (!lp->page_vaddr_algn)
1174 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1175 else {
1176 /* pageptr shall point into the DMA accessible memory region */
1177 /* we use this pointer to status the upper limit of allocated */
1178 /* memory in the allocated page. */
1179 /* note: align the pointers to the pci cache line size */
1180 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1181 pageptr = lp->page_vaddr_algn;
1182
1183 lp->rxrcommit = 0;
1184 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1185
1186 /* Initialise Rx Ring */
1187 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1188 lp->rxring[i].next = ringptr;
1189 ringptr = &(lp->rxring[i]);
1190 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1191 }
1192
1193 /* Initialise Tx Ring */
1194 lp->txrcommit = 0;
1195 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1196 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1197 lp->txring[i].next = ringptr;
1198 ringptr = &(lp->txring[i]);
1199 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1200 }
1201 }
1202 }
1203
1204
1205 /* These functions "format" the entries in the pdl structure */
1206 /* They return how much memory the fragments need. */
1207 static int hp100_init_rxpdl(struct net_device *dev,
1208 register hp100_ring_t * ringptr,
1209 register u32 * pdlptr)
1210 {
1211 /* pdlptr is starting address for this pdl */
1212
1213 if (0 != (((unsigned long) pdlptr) & 0xf))
1214 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1215 dev->name, (unsigned long) pdlptr);
1216
1217 ringptr->pdl = pdlptr + 1;
1218 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1219 ringptr->skb = NULL;
1220
1221 /*
1222 * Write address and length of first PDL Fragment (which is used for
1223 * storing the RX-Header
1224 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1225 * store this information. (PDH is at offset 0x04)
1226 */
1227 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1228
1229 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1230 *(pdlptr + 3) = 4; /* Length Frag 1 */
1231
1232 return roundup(MAX_RX_FRAG * 2 + 2, 4);
1233 }
1234
1235
1236 static int hp100_init_txpdl(struct net_device *dev,
1237 register hp100_ring_t * ringptr,
1238 register u32 * pdlptr)
1239 {
1240 if (0 != (((unsigned long) pdlptr) & 0xf))
1241 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1242
1243 ringptr->pdl = pdlptr; /* +1; */
1244 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1245 ringptr->skb = NULL;
1246
1247 return roundup(MAX_TX_FRAG * 2 + 2, 4);
1248 }
1249
1250 /*
1251 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1252 * for possible odd word alignment rounding up to next dword and set PDL
1253 * address for fragment#2
1254 * Returns: 0 if unable to allocate skb_buff
1255 * 1 if successful
1256 */
1257 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1258 struct net_device *dev)
1259 {
1260 #ifdef HP100_DEBUG_B
1261 int ioaddr = dev->base_addr;
1262 #endif
1263 #ifdef HP100_DEBUG_BM
1264 u_int *p;
1265 #endif
1266
1267 #ifdef HP100_DEBUG_B
1268 hp100_outw(0x4207, TRACE);
1269 printk("hp100: %s: build rx pdl\n", dev->name);
1270 #endif
1271
1272 /* Allocate skb buffer of maximum size */
1273 /* Note: This depends on the alloc_skb functions allocating more
1274 * space than requested, i.e. aligning to 16bytes */
1275
1276 ringptr->skb = netdev_alloc_skb(dev, roundup(MAX_ETHER_SIZE + 2, 4));
1277
1278 if (NULL != ringptr->skb) {
1279 /*
1280 * Reserve 2 bytes at the head of the buffer to land the IP header
1281 * on a long word boundary (According to the Network Driver section
1282 * in the Linux KHG, this should help to increase performance.)
1283 */
1284 skb_reserve(ringptr->skb, 2);
1285
1286 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1287
1288 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1289 /* Note: 1st Fragment is used for the 4 byte packet status
1290 * (receive header). Its PDL entries are set up by init_rxpdl. So
1291 * here we only have to set up the PDL fragment entries for the data
1292 * part. Those 4 bytes will be stored in the DMA memory region
1293 * directly before the PDL.
1294 */
1295 #ifdef HP100_DEBUG_BM
1296 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1297 dev->name, (u_int) ringptr->pdl,
1298 roundup(MAX_ETHER_SIZE + 2, 4),
1299 (unsigned int) ringptr->skb->data);
1300 #endif
1301
1302 /* Conversion to new PCI API : map skbuf data to PCI bus.
1303 * Doc says it's OK for EISA as well - Jean II */
1304 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1305 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1306 ringptr->skb->data);
1307 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1308
1309 #ifdef HP100_DEBUG_BM
1310 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1311 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1312 #endif
1313 return 1;
1314 }
1315 /* else: */
1316 /* alloc_skb failed (no memory) -> still can receive the header
1317 * fragment into PDL memory. make PDL safe by clearing msgptr and
1318 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1319 */
1320 #ifdef HP100_DEBUG_BM
1321 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1322 #endif
1323
1324 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1325
1326 return 0;
1327 }
1328
1329 /*
1330 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1331 *
1332 * Makes assumption that skb's are always contiguous memory areas and
1333 * therefore PDLs contain only 2 physical fragments.
1334 * - While the number of Rx PDLs with buffers is less than maximum
1335 * a. Get a maximum packet size skb
1336 * b. Put the physical address of the buffer into the PDL.
1337 * c. Output physical address of PDL to adapter.
1338 */
1339 static void hp100_rxfill(struct net_device *dev)
1340 {
1341 int ioaddr = dev->base_addr;
1342
1343 struct hp100_private *lp = netdev_priv(dev);
1344 hp100_ring_t *ringptr;
1345
1346 #ifdef HP100_DEBUG_B
1347 hp100_outw(0x4208, TRACE);
1348 printk("hp100: %s: rxfill\n", dev->name);
1349 #endif
1350
1351 hp100_page(PERFORMANCE);
1352
1353 while (lp->rxrcommit < MAX_RX_PDL) {
1354 /*
1355 ** Attempt to get a buffer and build a Rx PDL.
1356 */
1357 ringptr = lp->rxrtail;
1358 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1359 return; /* None available, return */
1360 }
1361
1362 /* Hand this PDL over to the card */
1363 /* Note: This needs performance page selected! */
1364 #ifdef HP100_DEBUG_BM
1365 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1366 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1367 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1368 #endif
1369
1370 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1371
1372 lp->rxrcommit += 1;
1373 lp->rxrtail = ringptr->next;
1374 }
1375 }
1376
1377 /*
1378 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1379 */
1380
1381 static void hp100_BM_shutdown(struct net_device *dev)
1382 {
1383 int ioaddr = dev->base_addr;
1384 struct hp100_private *lp = netdev_priv(dev);
1385 unsigned long time;
1386
1387 #ifdef HP100_DEBUG_B
1388 hp100_outw(0x4209, TRACE);
1389 printk("hp100: %s: bm shutdown\n", dev->name);
1390 #endif
1391
1392 hp100_page(PERFORMANCE);
1393 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1394 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1395
1396 /* Ensure Interrupts are off */
1397 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1398
1399 /* Disable all MAC activity */
1400 hp100_page(MAC_CTRL);
1401 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1402
1403 /* If cascade MMU is not already in reset */
1404 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1405 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1406 * MMU pointers will not be reset out from underneath
1407 */
1408 hp100_page(MAC_CTRL);
1409 for (time = 0; time < 5000; time++) {
1410 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1411 break;
1412 }
1413
1414 /* Shutdown algorithm depends on the generation of Cascade */
1415 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1416 /* Disable Busmaster mode and wait for bit to go to zero. */
1417 hp100_page(HW_MAP);
1418 hp100_andb(~HP100_BM_MASTER, BM);
1419 /* 100 ms timeout */
1420 for (time = 0; time < 32000; time++) {
1421 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1422 break;
1423 }
1424 } else { /* Shasta or Rainier Shutdown/Reset */
1425 /* To ensure all bus master inloading activity has ceased,
1426 * wait for no Rx PDAs or no Rx packets on card.
1427 */
1428 hp100_page(PERFORMANCE);
1429 /* 100 ms timeout */
1430 for (time = 0; time < 10000; time++) {
1431 /* RX_PDL: PDLs not executed. */
1432 /* RX_PKT_CNT: RX'd packets on card. */
1433 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1434 break;
1435 }
1436
1437 if (time >= 10000)
1438 printk("hp100: %s: BM shutdown error.\n", dev->name);
1439
1440 /* To ensure all bus master outloading activity has ceased,
1441 * wait until the Tx PDA count goes to zero or no more Tx space
1442 * available in the Tx region of the card.
1443 */
1444 /* 100 ms timeout */
1445 for (time = 0; time < 10000; time++) {
1446 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1447 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1448 break;
1449 }
1450
1451 /* Disable Busmaster mode */
1452 hp100_page(HW_MAP);
1453 hp100_andb(~HP100_BM_MASTER, BM);
1454 } /* end of shutdown procedure for non-etr parts */
1455
1456 hp100_cascade_reset(dev, 1);
1457 }
1458 hp100_page(PERFORMANCE);
1459 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1460 /* Busmaster mode should be shut down now. */
1461 }
1462
1463 static int hp100_check_lan(struct net_device *dev)
1464 {
1465 struct hp100_private *lp = netdev_priv(dev);
1466
1467 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1468 hp100_stop_interface(dev);
1469 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1470 printk("hp100: %s: no connection found - check wire\n", dev->name);
1471 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1472 return -EIO;
1473 }
1474 if (lp->lan_type == HP100_LAN_100)
1475 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1476 hp100_start_interface(dev);
1477 }
1478 return 0;
1479 }
1480
1481 /*
1482 * transmit functions
1483 */
1484
1485 /* tx function for busmaster mode */
1486 static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
1487 struct net_device *dev)
1488 {
1489 unsigned long flags;
1490 int i, ok_flag;
1491 int ioaddr = dev->base_addr;
1492 struct hp100_private *lp = netdev_priv(dev);
1493 hp100_ring_t *ringptr;
1494
1495 #ifdef HP100_DEBUG_B
1496 hp100_outw(0x4210, TRACE);
1497 printk("hp100: %s: start_xmit_bm\n", dev->name);
1498 #endif
1499 if (skb->len <= 0)
1500 goto drop;
1501
1502 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1503 return NETDEV_TX_OK;
1504
1505 /* Get Tx ring tail pointer */
1506 if (lp->txrtail->next == lp->txrhead) {
1507 /* No memory. */
1508 #ifdef HP100_DEBUG
1509 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1510 #endif
1511 /* not waited long enough since last tx? */
1512 if (time_before(jiffies, dev_trans_start(dev) + HZ))
1513 goto drop;
1514
1515 if (hp100_check_lan(dev))
1516 goto drop;
1517
1518 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1519 /* we have a 100Mb/s adapter but it isn't connected to hub */
1520 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1521 hp100_stop_interface(dev);
1522 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1523 hp100_start_interface(dev);
1524 } else {
1525 spin_lock_irqsave(&lp->lock, flags);
1526 hp100_ints_off(); /* Useful ? Jean II */
1527 i = hp100_sense_lan(dev);
1528 hp100_ints_on();
1529 spin_unlock_irqrestore(&lp->lock, flags);
1530 if (i == HP100_LAN_ERR)
1531 printk("hp100: %s: link down detected\n", dev->name);
1532 else if (lp->lan_type != i) { /* cable change! */
1533 /* it's very hard - all network settings must be changed!!! */
1534 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1535 lp->lan_type = i;
1536 hp100_stop_interface(dev);
1537 if (lp->lan_type == HP100_LAN_100)
1538 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1539 hp100_start_interface(dev);
1540 } else {
1541 printk("hp100: %s: interface reset\n", dev->name);
1542 hp100_stop_interface(dev);
1543 if (lp->lan_type == HP100_LAN_100)
1544 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1545 hp100_start_interface(dev);
1546 }
1547 }
1548
1549 goto drop;
1550 }
1551
1552 /*
1553 * we have to turn int's off before modifying this, otherwise
1554 * a tx_pdl_cleanup could occur at the same time
1555 */
1556 spin_lock_irqsave(&lp->lock, flags);
1557 ringptr = lp->txrtail;
1558 lp->txrtail = ringptr->next;
1559
1560 /* Check whether packet has minimal packet size */
1561 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1562 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1563
1564 ringptr->skb = skb;
1565 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1566 if (lp->chip == HP100_CHIPID_SHASTA) {
1567 /* TODO:Could someone who has the EISA card please check if this works? */
1568 ringptr->pdl[2] = i;
1569 } else { /* Lassen */
1570 /* In the PDL, don't use the padded size but the real packet size: */
1571 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1572 }
1573 /* Conversion to new PCI API : map skbuf data to PCI bus.
1574 * Doc says it's OK for EISA as well - Jean II */
1575 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1576
1577 /* Hand this PDL to the card. */
1578 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1579
1580 lp->txrcommit++;
1581
1582 dev->stats.tx_packets++;
1583 dev->stats.tx_bytes += skb->len;
1584
1585 spin_unlock_irqrestore(&lp->lock, flags);
1586
1587 return NETDEV_TX_OK;
1588
1589 drop:
1590 dev_kfree_skb(skb);
1591 return NETDEV_TX_OK;
1592 }
1593
1594
1595 /* clean_txring checks if packets have been sent by the card by reading
1596 * the TX_PDL register from the performance page and comparing it to the
1597 * number of committed packets. It then frees the skb's of the packets that
1598 * obviously have been sent to the network.
1599 *
1600 * Needs the PERFORMANCE page selected.
1601 */
1602 static void hp100_clean_txring(struct net_device *dev)
1603 {
1604 struct hp100_private *lp = netdev_priv(dev);
1605 int ioaddr = dev->base_addr;
1606 int donecount;
1607
1608 #ifdef HP100_DEBUG_B
1609 hp100_outw(0x4211, TRACE);
1610 printk("hp100: %s: clean txring\n", dev->name);
1611 #endif
1612
1613 /* How many PDLs have been transmitted? */
1614 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1615
1616 #ifdef HP100_DEBUG
1617 if (donecount > MAX_TX_PDL)
1618 printk("hp100: %s: Warning: More PDLs transmitted than committed to card???\n", dev->name);
1619 #endif
1620
1621 for (; 0 != donecount; donecount--) {
1622 #ifdef HP100_DEBUG_BM
1623 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1624 dev->name, (u_int) lp->txrhead->skb->data,
1625 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1626 #endif
1627 /* Conversion to new PCI API : NOP */
1628 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1629 dev_consume_skb_any(lp->txrhead->skb);
1630 lp->txrhead->skb = NULL;
1631 lp->txrhead = lp->txrhead->next;
1632 lp->txrcommit--;
1633 }
1634 }
1635
1636 /* tx function for slave modes */
1637 static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
1638 struct net_device *dev)
1639 {
1640 unsigned long flags;
1641 int i, ok_flag;
1642 int ioaddr = dev->base_addr;
1643 u_short val;
1644 struct hp100_private *lp = netdev_priv(dev);
1645
1646 #ifdef HP100_DEBUG_B
1647 hp100_outw(0x4212, TRACE);
1648 printk("hp100: %s: start_xmit\n", dev->name);
1649 #endif
1650 if (skb->len <= 0)
1651 goto drop;
1652
1653 if (hp100_check_lan(dev))
1654 goto drop;
1655
1656 /* If there is not enough free memory on the card... */
1657 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1658 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1659 #ifdef HP100_DEBUG
1660 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1661 #endif
1662 /* not waited long enough since last failed tx try? */
1663 if (time_before(jiffies, dev_trans_start(dev) + HZ)) {
1664 #ifdef HP100_DEBUG
1665 printk("hp100: %s: trans_start timing problem\n",
1666 dev->name);
1667 #endif
1668 goto drop;
1669 }
1670 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1671 /* we have a 100Mb/s adapter but it isn't connected to hub */
1672 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1673 hp100_stop_interface(dev);
1674 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1675 hp100_start_interface(dev);
1676 } else {
1677 spin_lock_irqsave(&lp->lock, flags);
1678 hp100_ints_off(); /* Useful ? Jean II */
1679 i = hp100_sense_lan(dev);
1680 hp100_ints_on();
1681 spin_unlock_irqrestore(&lp->lock, flags);
1682 if (i == HP100_LAN_ERR)
1683 printk("hp100: %s: link down detected\n", dev->name);
1684 else if (lp->lan_type != i) { /* cable change! */
1685 /* it's very hard - all network setting must be changed!!! */
1686 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1687 lp->lan_type = i;
1688 hp100_stop_interface(dev);
1689 if (lp->lan_type == HP100_LAN_100)
1690 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1691 hp100_start_interface(dev);
1692 } else {
1693 printk("hp100: %s: interface reset\n", dev->name);
1694 hp100_stop_interface(dev);
1695 if (lp->lan_type == HP100_LAN_100)
1696 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1697 hp100_start_interface(dev);
1698 mdelay(1);
1699 }
1700 }
1701 goto drop;
1702 }
1703
1704 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1705 #ifdef HP100_DEBUG_TX
1706 printk("hp100: %s: start_xmit: busy\n", dev->name);
1707 #endif
1708 }
1709
1710 spin_lock_irqsave(&lp->lock, flags);
1711 hp100_ints_off();
1712 val = hp100_inw(IRQ_STATUS);
1713 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1714 * when the current packet being transmitted on the wire is completed. */
1715 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1716 #ifdef HP100_DEBUG_TX
1717 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1718 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1719 #endif
1720
1721 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1722 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1723
1724 hp100_outw(i, DATA32); /* tell card the total packet length */
1725 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1726
1727 if (lp->mode == 2) { /* memory mapped */
1728 /* Note: The J2585B needs alignment to 32bits here! */
1729 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1730 if (!ok_flag)
1731 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1732 } else { /* programmed i/o */
1733 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1734 (skb->len + 3) >> 2);
1735 if (!ok_flag)
1736 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1737 hp100_outl(0, DATA32);
1738 }
1739
1740 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1741
1742 dev->stats.tx_packets++;
1743 dev->stats.tx_bytes += skb->len;
1744 hp100_ints_on();
1745 spin_unlock_irqrestore(&lp->lock, flags);
1746
1747 dev_consume_skb_any(skb);
1748
1749 #ifdef HP100_DEBUG_TX
1750 printk("hp100: %s: start_xmit: end\n", dev->name);
1751 #endif
1752
1753 return NETDEV_TX_OK;
1754
1755 drop:
1756 dev_kfree_skb(skb);
1757 return NETDEV_TX_OK;
1758
1759 }
1760
1761
1762 /*
1763 * Receive Function (Non-Busmaster mode)
1764 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1765 * packet counter is non-zero.
1766 * For non-busmaster, this function does the whole work of transferring
1767 * the packet to the host memory and then up to higher layers via skb
1768 * and netif_rx.
1769 */
1770
1771 static void hp100_rx(struct net_device *dev)
1772 {
1773 int packets, pkt_len;
1774 int ioaddr = dev->base_addr;
1775 struct hp100_private *lp = netdev_priv(dev);
1776 u_int header;
1777 struct sk_buff *skb;
1778
1779 #ifdef DEBUG_B
1780 hp100_outw(0x4213, TRACE);
1781 printk("hp100: %s: rx\n", dev->name);
1782 #endif
1783
1784 /* First get indication of received lan packet */
1785 /* RX_PKT_CND indicates the number of packets which have been fully */
1786 /* received onto the card but have not been fully transferred of the card */
1787 packets = hp100_inb(RX_PKT_CNT);
1788 #ifdef HP100_DEBUG_RX
1789 if (packets > 1)
1790 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1791 #endif
1792
1793 while (packets-- > 0) {
1794 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1795 /* really advanced to the next packet. */
1796 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1797 #ifdef HP100_DEBUG_RX
1798 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1799 #endif
1800 }
1801
1802 /* First we get the header, which contains information about the */
1803 /* actual length of the received packet. */
1804 if (lp->mode == 2) { /* memory mapped mode */
1805 header = readl(lp->mem_ptr_virt);
1806 } else /* programmed i/o */
1807 header = hp100_inl(DATA32);
1808
1809 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1810
1811 #ifdef HP100_DEBUG_RX
1812 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1813 dev->name, header & HP100_PKT_LEN_MASK,
1814 (header >> 16) & 0xfff8, (header >> 16) & 7);
1815 #endif
1816
1817 /* Now we allocate the skb and transfer the data into it. */
1818 skb = netdev_alloc_skb(dev, pkt_len + 2);
1819 if (skb == NULL) { /* Not enough memory->drop packet */
1820 #ifdef HP100_DEBUG
1821 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1822 dev->name, pkt_len);
1823 #endif
1824 dev->stats.rx_dropped++;
1825 } else { /* skb successfully allocated */
1826
1827 u_char *ptr;
1828
1829 skb_reserve(skb,2);
1830
1831 /* ptr to start of the sk_buff data area */
1832 skb_put(skb, pkt_len);
1833 ptr = skb->data;
1834
1835 /* Now transfer the data from the card into that area */
1836 if (lp->mode == 2)
1837 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1838 else /* io mapped */
1839 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1840
1841 skb->protocol = eth_type_trans(skb, dev);
1842
1843 #ifdef HP100_DEBUG_RX
1844 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1845 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1846 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1847 ptr[9], ptr[10], ptr[11]);
1848 #endif
1849 netif_rx(skb);
1850 dev->stats.rx_packets++;
1851 dev->stats.rx_bytes += pkt_len;
1852 }
1853
1854 /* Indicate the card that we have got the packet */
1855 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1856
1857 switch (header & 0x00070000) {
1858 case (HP100_MULTI_ADDR_HASH << 16):
1859 case (HP100_MULTI_ADDR_NO_HASH << 16):
1860 dev->stats.multicast++;
1861 break;
1862 }
1863 } /* end of while(there are packets) loop */
1864 #ifdef HP100_DEBUG_RX
1865 printk("hp100_rx: %s: end\n", dev->name);
1866 #endif
1867 }
1868
1869 /*
1870 * Receive Function for Busmaster Mode
1871 */
1872 static void hp100_rx_bm(struct net_device *dev)
1873 {
1874 int ioaddr = dev->base_addr;
1875 struct hp100_private *lp = netdev_priv(dev);
1876 hp100_ring_t *ptr;
1877 u_int header;
1878 int pkt_len;
1879
1880 #ifdef HP100_DEBUG_B
1881 hp100_outw(0x4214, TRACE);
1882 printk("hp100: %s: rx_bm\n", dev->name);
1883 #endif
1884
1885 #ifdef HP100_DEBUG
1886 if (0 == lp->rxrcommit) {
1887 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1888 return;
1889 } else
1890 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1891 * the cards BM engine */
1892 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1893 printk("hp100: %s: More packets received than committed? RX_PKT_CNT=0x%x, commit=0x%x\n",
1894 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1895 lp->rxrcommit);
1896 return;
1897 }
1898 #endif
1899
1900 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1901 /*
1902 * The packet was received into the pdl pointed to by lp->rxrhead (
1903 * the oldest pdl in the ring
1904 */
1905
1906 /* First we get the header, which contains information about the */
1907 /* actual length of the received packet. */
1908
1909 ptr = lp->rxrhead;
1910
1911 header = *(ptr->pdl - 1);
1912 pkt_len = (header & HP100_PKT_LEN_MASK);
1913
1914 /* Conversion to new PCI API : NOP */
1915 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1916
1917 #ifdef HP100_DEBUG_BM
1918 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1919 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1920 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1921 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",
1922 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1923 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1924 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1925 #endif
1926
1927 if ((pkt_len >= MIN_ETHER_SIZE) &&
1928 (pkt_len <= MAX_ETHER_SIZE)) {
1929 if (ptr->skb == NULL) {
1930 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1931 /* can happen if we only allocated room for the pdh due to memory shortage. */
1932 dev->stats.rx_dropped++;
1933 } else {
1934 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1935 ptr->skb->protocol =
1936 eth_type_trans(ptr->skb, dev);
1937
1938 netif_rx(ptr->skb); /* Up and away... */
1939
1940 dev->stats.rx_packets++;
1941 dev->stats.rx_bytes += pkt_len;
1942 }
1943
1944 switch (header & 0x00070000) {
1945 case (HP100_MULTI_ADDR_HASH << 16):
1946 case (HP100_MULTI_ADDR_NO_HASH << 16):
1947 dev->stats.multicast++;
1948 break;
1949 }
1950 } else {
1951 #ifdef HP100_DEBUG
1952 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1953 #endif
1954 if (ptr->skb != NULL)
1955 dev_kfree_skb_any(ptr->skb);
1956 dev->stats.rx_errors++;
1957 }
1958
1959 lp->rxrhead = lp->rxrhead->next;
1960
1961 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1962 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1963 /* No space for skb, header can still be received. */
1964 #ifdef HP100_DEBUG
1965 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1966 #endif
1967 return;
1968 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1969 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1970 lp->rxrtail = lp->rxrtail->next;
1971 }
1972
1973 }
1974 }
1975
1976 /*
1977 * statistics
1978 */
1979 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1980 {
1981 unsigned long flags;
1982 int ioaddr = dev->base_addr;
1983 struct hp100_private *lp = netdev_priv(dev);
1984
1985 #ifdef HP100_DEBUG_B
1986 hp100_outw(0x4215, TRACE);
1987 #endif
1988
1989 spin_lock_irqsave(&lp->lock, flags);
1990 hp100_ints_off(); /* Useful ? Jean II */
1991 hp100_update_stats(dev);
1992 hp100_ints_on();
1993 spin_unlock_irqrestore(&lp->lock, flags);
1994 return &(dev->stats);
1995 }
1996
1997 static void hp100_update_stats(struct net_device *dev)
1998 {
1999 int ioaddr = dev->base_addr;
2000 u_short val;
2001
2002 #ifdef HP100_DEBUG_B
2003 hp100_outw(0x4216, TRACE);
2004 printk("hp100: %s: update-stats\n", dev->name);
2005 #endif
2006
2007 /* Note: Statistics counters clear when read. */
2008 hp100_page(MAC_CTRL);
2009 val = hp100_inw(DROPPED) & 0x0fff;
2010 dev->stats.rx_errors += val;
2011 dev->stats.rx_over_errors += val;
2012 val = hp100_inb(CRC);
2013 dev->stats.rx_errors += val;
2014 dev->stats.rx_crc_errors += val;
2015 val = hp100_inb(ABORT);
2016 dev->stats.tx_errors += val;
2017 dev->stats.tx_aborted_errors += val;
2018 hp100_page(PERFORMANCE);
2019 }
2020
2021 static void hp100_misc_interrupt(struct net_device *dev)
2022 {
2023 #ifdef HP100_DEBUG_B
2024 int ioaddr = dev->base_addr;
2025 #endif
2026
2027 #ifdef HP100_DEBUG_B
2028 int ioaddr = dev->base_addr;
2029 hp100_outw(0x4216, TRACE);
2030 printk("hp100: %s: misc_interrupt\n", dev->name);
2031 #endif
2032
2033 /* Note: Statistics counters clear when read. */
2034 dev->stats.rx_errors++;
2035 dev->stats.tx_errors++;
2036 }
2037
2038 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2039 {
2040 unsigned long flags;
2041
2042 #ifdef HP100_DEBUG_B
2043 hp100_outw(0x4217, TRACE);
2044 printk("hp100: %s: clear_stats\n", dev->name);
2045 #endif
2046
2047 spin_lock_irqsave(&lp->lock, flags);
2048 hp100_page(MAC_CTRL); /* get all statistics bytes */
2049 hp100_inw(DROPPED);
2050 hp100_inb(CRC);
2051 hp100_inb(ABORT);
2052 hp100_page(PERFORMANCE);
2053 spin_unlock_irqrestore(&lp->lock, flags);
2054 }
2055
2056
2057 /*
2058 * multicast setup
2059 */
2060
2061 /*
2062 * Set or clear the multicast filter for this adapter.
2063 */
2064
2065 static void hp100_set_multicast_list(struct net_device *dev)
2066 {
2067 unsigned long flags;
2068 int ioaddr = dev->base_addr;
2069 struct hp100_private *lp = netdev_priv(dev);
2070
2071 #ifdef HP100_DEBUG_B
2072 hp100_outw(0x4218, TRACE);
2073 printk("hp100: %s: set_mc_list\n", dev->name);
2074 #endif
2075
2076 spin_lock_irqsave(&lp->lock, flags);
2077 hp100_ints_off();
2078 hp100_page(MAC_CTRL);
2079 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2080
2081 if (dev->flags & IFF_PROMISC) {
2082 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2083 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2084 memset(&lp->hash_bytes, 0xff, 8);
2085 } else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) {
2086 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2087 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2088 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2089 if (dev->flags & IFF_ALLMULTI) {
2090 /* set hash filter to receive all multicast packets */
2091 memset(&lp->hash_bytes, 0xff, 8);
2092 } else {
2093 int i, idx;
2094 u_char *addrs;
2095 struct netdev_hw_addr *ha;
2096
2097 memset(&lp->hash_bytes, 0x00, 8);
2098 #ifdef HP100_DEBUG
2099 printk("hp100: %s: computing hash filter - mc_count = %i\n",
2100 dev->name, netdev_mc_count(dev));
2101 #endif
2102 netdev_for_each_mc_addr(ha, dev) {
2103 addrs = ha->addr;
2104 #ifdef HP100_DEBUG
2105 printk("hp100: %s: multicast = %pM, ",
2106 dev->name, addrs);
2107 #endif
2108 for (i = idx = 0; i < 6; i++) {
2109 idx ^= *addrs++ & 0x3f;
2110 printk(":%02x:", idx);
2111 }
2112 #ifdef HP100_DEBUG
2113 printk("idx = %i\n", idx);
2114 #endif
2115 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2116 }
2117 }
2118 #else
2119 memset(&lp->hash_bytes, 0xff, 8);
2120 #endif
2121 } else {
2122 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2123 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2124 memset(&lp->hash_bytes, 0x00, 8);
2125 }
2126
2127 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2128 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2129 int i;
2130
2131 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2132 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2133 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2134
2135 hp100_page(MAC_ADDRESS);
2136 for (i = 0; i < 8; i++)
2137 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2138 #ifdef HP100_DEBUG
2139 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2140 dev->name, lp->mac1_mode, lp->mac2_mode,
2141 lp->hash_bytes[0], lp->hash_bytes[1],
2142 lp->hash_bytes[2], lp->hash_bytes[3],
2143 lp->hash_bytes[4], lp->hash_bytes[5],
2144 lp->hash_bytes[6], lp->hash_bytes[7]);
2145 #endif
2146
2147 if (lp->lan_type == HP100_LAN_100) {
2148 #ifdef HP100_DEBUG
2149 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2150 #endif
2151 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2152 }
2153 } else {
2154 int i;
2155 u_char old_hash_bytes[8];
2156
2157 hp100_page(MAC_ADDRESS);
2158 for (i = 0; i < 8; i++)
2159 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2160 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2161 for (i = 0; i < 8; i++)
2162 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2163 #ifdef HP100_DEBUG
2164 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2165 dev->name, lp->hash_bytes[0],
2166 lp->hash_bytes[1], lp->hash_bytes[2],
2167 lp->hash_bytes[3], lp->hash_bytes[4],
2168 lp->hash_bytes[5], lp->hash_bytes[6],
2169 lp->hash_bytes[7]);
2170 #endif
2171
2172 if (lp->lan_type == HP100_LAN_100) {
2173 #ifdef HP100_DEBUG
2174 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2175 #endif
2176 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2177 }
2178 }
2179 }
2180
2181 hp100_page(MAC_CTRL);
2182 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2183 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2184
2185 hp100_page(PERFORMANCE);
2186 hp100_ints_on();
2187 spin_unlock_irqrestore(&lp->lock, flags);
2188 }
2189
2190 /*
2191 * hardware interrupt handling
2192 */
2193
2194 static irqreturn_t hp100_interrupt(int irq, void *dev_id)
2195 {
2196 struct net_device *dev = (struct net_device *) dev_id;
2197 struct hp100_private *lp = netdev_priv(dev);
2198
2199 int ioaddr;
2200 u_int val;
2201
2202 if (dev == NULL)
2203 return IRQ_NONE;
2204 ioaddr = dev->base_addr;
2205
2206 spin_lock(&lp->lock);
2207
2208 hp100_ints_off();
2209
2210 #ifdef HP100_DEBUG_B
2211 hp100_outw(0x4219, TRACE);
2212 #endif
2213
2214 /* hp100_page( PERFORMANCE ); */
2215 val = hp100_inw(IRQ_STATUS);
2216 #ifdef HP100_DEBUG_IRQ
2217 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2218 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2219 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2220 #endif
2221
2222 if (val == 0) { /* might be a shared interrupt */
2223 spin_unlock(&lp->lock);
2224 hp100_ints_on();
2225 return IRQ_NONE;
2226 }
2227 /* We're only interested in those interrupts we really enabled. */
2228 /* val &= hp100_inw( IRQ_MASK ); */
2229
2230 /*
2231 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2232 * is considered executed whenever the RX_PDL data structure is no longer
2233 * needed.
2234 */
2235 if (val & HP100_RX_PDL_FILL_COMPL) {
2236 if (lp->mode == 1)
2237 hp100_rx_bm(dev);
2238 else {
2239 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2240 }
2241 }
2242
2243 /*
2244 * The RX_PACKET interrupt is set, when the receive packet counter is
2245 * non zero. We use this interrupt for receiving in slave mode. In
2246 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2247 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2248 * we somehow have missed a rx_pdl_fill_compl interrupt.
2249 */
2250
2251 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2252 if (lp->mode != 1) /* non busmaster */
2253 hp100_rx(dev);
2254 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2255 /* Shouldn't happen - maybe we missed a RX_PDL_FILL Interrupt? */
2256 hp100_rx_bm(dev);
2257 }
2258 }
2259
2260 /*
2261 * Ack. that we have noticed the interrupt and thereby allow next one.
2262 * Note that this is now done after the slave rx function, since first
2263 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2264 * on the J2573.
2265 */
2266 hp100_outw(val, IRQ_STATUS);
2267
2268 /*
2269 * RX_ERROR is set when a packet is dropped due to no memory resources on
2270 * the card or when a RCV_ERR occurs.
2271 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2272 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2273 */
2274 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2275 #ifdef HP100_DEBUG_IRQ
2276 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2277 #endif
2278 hp100_update_stats(dev);
2279 if (lp->mode == 1) {
2280 hp100_rxfill(dev);
2281 hp100_clean_txring(dev);
2282 }
2283 }
2284
2285 /*
2286 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2287 */
2288 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2289 hp100_rxfill(dev);
2290
2291 /*
2292 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2293 * is completed
2294 */
2295 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2296 hp100_clean_txring(dev);
2297
2298 /*
2299 * MISC_ERROR is set when either the LAN link goes down or a detected
2300 * bus error occurs.
2301 */
2302 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2303 #ifdef HP100_DEBUG_IRQ
2304 printk
2305 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2306 dev->name);
2307 #endif
2308 if (lp->mode == 1) {
2309 hp100_clean_txring(dev);
2310 hp100_rxfill(dev);
2311 }
2312 hp100_misc_interrupt(dev);
2313 }
2314
2315 spin_unlock(&lp->lock);
2316 hp100_ints_on();
2317 return IRQ_HANDLED;
2318 }
2319
2320 /*
2321 * some misc functions
2322 */
2323
2324 static void hp100_start_interface(struct net_device *dev)
2325 {
2326 unsigned long flags;
2327 int ioaddr = dev->base_addr;
2328 struct hp100_private *lp = netdev_priv(dev);
2329
2330 #ifdef HP100_DEBUG_B
2331 hp100_outw(0x4220, TRACE);
2332 printk("hp100: %s: hp100_start_interface\n", dev->name);
2333 #endif
2334
2335 spin_lock_irqsave(&lp->lock, flags);
2336
2337 /* Ensure the adapter does not want to request an interrupt when */
2338 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2339 hp100_page(PERFORMANCE);
2340 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2341 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2342 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2343 OPTION_LSW);
2344 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2345 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2346
2347 if (lp->mode == 1) {
2348 /* Make sure BM bit is set... */
2349 hp100_page(HW_MAP);
2350 hp100_orb(HP100_BM_MASTER, BM);
2351 hp100_rxfill(dev);
2352 } else if (lp->mode == 2) {
2353 /* Enable memory mapping. Note: Don't do this when busmaster. */
2354 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2355 }
2356
2357 hp100_page(PERFORMANCE);
2358 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2359 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2360
2361 /* enable a few interrupts: */
2362 if (lp->mode == 1) { /* busmaster mode */
2363 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2364 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2365 /* HP100_RX_PACKET | */
2366 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2367 /* HP100_TX_PDA_ZERO | */
2368 HP100_TX_COMPLETE |
2369 /* HP100_MISC_ERROR | */
2370 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2371 } else {
2372 hp100_outw(HP100_RX_PACKET |
2373 HP100_RX_ERROR | HP100_SET_HB |
2374 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2375 }
2376
2377 /* Note : before hp100_set_multicast_list(), because it will play with
2378 * spinlock itself... Jean II */
2379 spin_unlock_irqrestore(&lp->lock, flags);
2380
2381 /* Enable MAC Tx and RX, set MAC modes, ... */
2382 hp100_set_multicast_list(dev);
2383 }
2384
2385 static void hp100_stop_interface(struct net_device *dev)
2386 {
2387 struct hp100_private *lp = netdev_priv(dev);
2388 int ioaddr = dev->base_addr;
2389 u_int val;
2390
2391 #ifdef HP100_DEBUG_B
2392 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2393 hp100_outw(0x4221, TRACE);
2394 #endif
2395
2396 if (lp->mode == 1)
2397 hp100_BM_shutdown(dev);
2398 else {
2399 /* Note: MMAP_DIS will be reenabled by start_interface */
2400 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2401 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2402 OPTION_LSW);
2403 val = hp100_inw(OPTION_LSW);
2404
2405 hp100_page(MAC_CTRL);
2406 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2407
2408 if (!(val & HP100_HW_RST))
2409 return; /* If reset, imm. return ... */
2410 /* ... else: busy wait until idle */
2411 for (val = 0; val < 6000; val++)
2412 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2413 hp100_page(PERFORMANCE);
2414 return;
2415 }
2416 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2417 hp100_page(PERFORMANCE);
2418 }
2419 }
2420
2421 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2422 {
2423 int i;
2424 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2425
2426 #ifdef HP100_DEBUG_B
2427 hp100_outw(0x4222, TRACE);
2428 #endif
2429
2430 hp100_page(EEPROM_CTRL);
2431 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2432 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2433 for (i = 0; i < 10000; i++)
2434 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2435 return;
2436 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2437 }
2438
2439 /* Sense connection status.
2440 * return values: LAN_10 - Connected to 10Mbit/s network
2441 * LAN_100 - Connected to 100Mbit/s network
2442 * LAN_ERR - not connected or 100Mbit/s Hub down
2443 */
2444 static int hp100_sense_lan(struct net_device *dev)
2445 {
2446 int ioaddr = dev->base_addr;
2447 u_short val_VG, val_10;
2448 struct hp100_private *lp = netdev_priv(dev);
2449
2450 #ifdef HP100_DEBUG_B
2451 hp100_outw(0x4223, TRACE);
2452 #endif
2453
2454 hp100_page(MAC_CTRL);
2455 val_10 = hp100_inb(10_LAN_CFG_1);
2456 val_VG = hp100_inb(VG_LAN_CFG_1);
2457 hp100_page(PERFORMANCE);
2458 #ifdef HP100_DEBUG
2459 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2460 dev->name, val_VG, val_10);
2461 #endif
2462
2463 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2464 return HP100_LAN_10;
2465
2466 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2467 /*
2468 * This can be overriden by dos utility, so if this has no effect,
2469 * perhaps you need to download that utility from HP and set card
2470 * back to "auto detect".
2471 */
2472 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2473 hp100_page(MAC_CTRL);
2474 hp100_outb(val_10, 10_LAN_CFG_1);
2475 hp100_page(PERFORMANCE);
2476 return HP100_LAN_COAX;
2477 }
2478
2479 /* Those cards don't have a 100 Mbit connector */
2480 if ( !strcmp(lp->id, "HWP1920") ||
2481 (lp->pci_dev &&
2482 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2483 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2484 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2485 return HP100_LAN_ERR;
2486
2487 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2488 return HP100_LAN_100;
2489 return HP100_LAN_ERR;
2490 }
2491
2492 static int hp100_down_vg_link(struct net_device *dev)
2493 {
2494 struct hp100_private *lp = netdev_priv(dev);
2495 int ioaddr = dev->base_addr;
2496 unsigned long time;
2497 long savelan, newlan;
2498
2499 #ifdef HP100_DEBUG_B
2500 hp100_outw(0x4224, TRACE);
2501 printk("hp100: %s: down_vg_link\n", dev->name);
2502 #endif
2503
2504 hp100_page(MAC_CTRL);
2505 time = jiffies + (HZ / 4);
2506 do {
2507 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2508 break;
2509 if (!in_interrupt())
2510 schedule_timeout_interruptible(1);
2511 } while (time_after(time, jiffies));
2512
2513 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2514 return 0;
2515
2516 /* Drop the VG Link by clearing the link up cmd and load addr. */
2517
2518 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2519 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2520
2521 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2522 time = jiffies + (HZ / 2);
2523 do {
2524 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2525 break;
2526 if (!in_interrupt())
2527 schedule_timeout_interruptible(1);
2528 } while (time_after(time, jiffies));
2529
2530 #ifdef HP100_DEBUG
2531 if (time_after_eq(jiffies, time))
2532 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2533 #endif
2534
2535 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2536 /* logout under traffic (even though all the status bits are cleared), */
2537 /* do this workaround to get the Rev 1 MAC in its idle state */
2538 if (lp->chip == HP100_CHIPID_LASSEN) {
2539 /* Reset VG MAC to insure it leaves the logoff state even if */
2540 /* the Hub is still emitting tones */
2541 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2542 udelay(1500); /* wait for >1ms */
2543 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2544 udelay(1500);
2545 }
2546
2547 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2548 /* to get the VG mac to full reset. This is not req.d with later chips */
2549 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2550 /* selected again! This will be left to the connect hub function to */
2551 /* perform if desired. */
2552 if (lp->chip == HP100_CHIPID_LASSEN) {
2553 /* Have to write to 10 and 100VG control registers simultaneously */
2554 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2555 newlan &= ~(HP100_VG_SEL << 16);
2556 newlan |= (HP100_DOT3_MAC) << 8;
2557 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2558 hp100_outl(newlan, 10_LAN_CFG_1);
2559
2560 /* Conditionally stall for 5sec on VG selected. */
2561 time = jiffies + (HZ * 5);
2562 do {
2563 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2564 break;
2565 if (!in_interrupt())
2566 schedule_timeout_interruptible(1);
2567 } while (time_after(time, jiffies));
2568
2569 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2570 hp100_outl(savelan, 10_LAN_CFG_1);
2571 }
2572
2573 time = jiffies + (3 * HZ); /* Timeout 3s */
2574 do {
2575 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2576 break;
2577 if (!in_interrupt())
2578 schedule_timeout_interruptible(1);
2579 } while (time_after(time, jiffies));
2580
2581 if (time_before_eq(time, jiffies)) {
2582 #ifdef HP100_DEBUG
2583 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2584 #endif
2585 return -EIO;
2586 }
2587
2588 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2589 do {
2590 if (!in_interrupt())
2591 schedule_timeout_interruptible(1);
2592 } while (time_after(time, jiffies));
2593
2594 return 0;
2595 }
2596
2597 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2598 {
2599 int ioaddr = dev->base_addr;
2600 struct hp100_private *lp = netdev_priv(dev);
2601 u_short val = 0;
2602 unsigned long time;
2603 int startst;
2604
2605 #ifdef HP100_DEBUG_B
2606 hp100_outw(0x4225, TRACE);
2607 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2608 #endif
2609
2610 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2611 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2612 * promiscuous mode change)
2613 */
2614 hp100_page(MAC_CTRL);
2615 startst = hp100_inb(VG_LAN_CFG_1);
2616 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2617 #ifdef HP100_DEBUG_TRAINING
2618 printk("hp100: %s: Start training\n", dev->name);
2619 #endif
2620
2621 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2622 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2623
2624 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2625 /* entry then temporarily put them into force 100Mbit mode */
2626 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2627 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2628
2629 /* Drop the VG link by zeroing Link Up Command and Load Address */
2630 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2631
2632 #ifdef HP100_DEBUG_TRAINING
2633 printk("hp100: %s: Bring down the link\n", dev->name);
2634 #endif
2635
2636 /* Wait for link to drop */
2637 time = jiffies + (HZ / 10);
2638 do {
2639 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2640 break;
2641 if (!in_interrupt())
2642 schedule_timeout_interruptible(1);
2643 } while (time_after(time, jiffies));
2644
2645 /* Start an addressed training and optionally request promiscuous port */
2646 if ((dev->flags) & IFF_PROMISC) {
2647 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2648 if (lp->chip == HP100_CHIPID_LASSEN)
2649 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2650 } else {
2651 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2652 /* For ETR parts we need to reset the prom. bit in the training
2653 * register, otherwise promiscious mode won't be disabled.
2654 */
2655 if (lp->chip == HP100_CHIPID_LASSEN) {
2656 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2657 }
2658 }
2659
2660 /* With ETR parts, frame format request bits can be set. */
2661 if (lp->chip == HP100_CHIPID_LASSEN)
2662 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2663
2664 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2665
2666 /* Note: Next wait could be omitted for Hood and earlier chips under */
2667 /* certain circumstances */
2668 /* TODO: check if hood/earlier and skip wait. */
2669
2670 /* Wait for either short timeout for VG tones or long for login */
2671 /* Wait for the card hardware to signalise link cable status ok... */
2672 hp100_page(MAC_CTRL);
2673 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2674 do {
2675 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2676 break;
2677 if (!in_interrupt())
2678 schedule_timeout_interruptible(1);
2679 } while (time_before(jiffies, time));
2680
2681 if (time_after_eq(jiffies, time)) {
2682 #ifdef HP100_DEBUG_TRAINING
2683 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2684 #endif
2685 } else {
2686 #ifdef HP100_DEBUG_TRAINING
2687 printk
2688 ("hp100: %s: HUB tones detected. Trying to train.\n",
2689 dev->name);
2690 #endif
2691
2692 time = jiffies + (2 * HZ); /* again a timeout */
2693 do {
2694 val = hp100_inb(VG_LAN_CFG_1);
2695 if ((val & (HP100_LINK_UP_ST))) {
2696 #ifdef HP100_DEBUG_TRAINING
2697 printk("hp100: %s: Passed training.\n", dev->name);
2698 #endif
2699 break;
2700 }
2701 if (!in_interrupt())
2702 schedule_timeout_interruptible(1);
2703 } while (time_after(time, jiffies));
2704 }
2705
2706 /* If LINK_UP_ST is set, then we are logged into the hub. */
2707 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2708 #ifdef HP100_DEBUG_TRAINING
2709 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2710 if (lp->chip == HP100_CHIPID_LASSEN) {
2711 val = hp100_inw(TRAIN_ALLOW);
2712 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2713 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2714 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2715 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2716 }
2717 #endif
2718 } else {
2719 /* If LINK_UP_ST is not set, login was not successful */
2720 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2721 if (lp->chip == HP100_CHIPID_LASSEN) {
2722 /* Check allowed Register to find out why there is a problem. */
2723 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2724 #ifdef HP100_DEBUG_TRAINING
2725 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2726 #endif
2727 if (val & HP100_MALLOW_ACCDENIED)
2728 printk("hp100: %s: HUB access denied.\n", dev->name);
2729 if (val & HP100_MALLOW_CONFIGURE)
2730 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2731 if (val & HP100_MALLOW_DUPADDR)
2732 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2733 }
2734 }
2735
2736 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2737 /* to auto-select mode */
2738
2739 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2740 hp100_page(MAC_CTRL);
2741 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2742 }
2743
2744 val = hp100_inb(VG_LAN_CFG_1);
2745
2746 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2747 hp100_page(PERFORMANCE);
2748 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2749
2750 if (val & HP100_LINK_UP_ST)
2751 return 0; /* login was ok */
2752 else {
2753 printk("hp100: %s: Training failed.\n", dev->name);
2754 hp100_down_vg_link(dev);
2755 return -EIO;
2756 }
2757 }
2758 /* no forced relogin & already link there->no training. */
2759 return -EIO;
2760 }
2761
2762 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2763 {
2764 int ioaddr = dev->base_addr;
2765 struct hp100_private *lp = netdev_priv(dev);
2766
2767 #ifdef HP100_DEBUG_B
2768 hp100_outw(0x4226, TRACE);
2769 printk("hp100: %s: cascade_reset\n", dev->name);
2770 #endif
2771
2772 if (enable) {
2773 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2774 if (lp->chip == HP100_CHIPID_LASSEN) {
2775 /* Lassen requires a PCI transmit fifo reset */
2776 hp100_page(HW_MAP);
2777 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2778 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2779 /* Wait for min. 300 ns */
2780 /* we can't use jiffies here, because it may be */
2781 /* that we have disabled the timer... */
2782 udelay(400);
2783 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2784 hp100_page(PERFORMANCE);
2785 }
2786 } else { /* bring out of reset */
2787 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2788 udelay(400);
2789 hp100_page(PERFORMANCE);
2790 }
2791 }
2792
2793 #ifdef HP100_DEBUG
2794 void hp100_RegisterDump(struct net_device *dev)
2795 {
2796 int ioaddr = dev->base_addr;
2797 int Page;
2798 int Register;
2799
2800 /* Dump common registers */
2801 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2802 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2803 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2804 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2805 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2806
2807 /* Dump paged registers */
2808 for (Page = 0; Page < 8; Page++) {
2809 /* Dump registers */
2810 printk("page: 0x%.2x\n", Page);
2811 outw(Page, ioaddr + 0x02);
2812 for (Register = 0x8; Register < 0x22; Register += 2) {
2813 /* Display Register contents except data port */
2814 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2815 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2816 }
2817 }
2818 }
2819 hp100_page(PERFORMANCE);
2820 }
2821 #endif
2822
2823
2824 static void cleanup_dev(struct net_device *d)
2825 {
2826 struct hp100_private *p = netdev_priv(d);
2827
2828 unregister_netdev(d);
2829 release_region(d->base_addr, HP100_REGION_SIZE);
2830
2831 if (p->mode == 1) /* busmaster */
2832 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2833 p->page_vaddr_algn,
2834 virt_to_whatever(d, p->page_vaddr_algn));
2835 if (p->mem_ptr_virt)
2836 iounmap(p->mem_ptr_virt);
2837
2838 free_netdev(d);
2839 }
2840
2841 static int hp100_eisa_probe(struct device *gendev)
2842 {
2843 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2844 struct eisa_device *edev = to_eisa_device(gendev);
2845 int err;
2846
2847 if (!dev)
2848 return -ENOMEM;
2849
2850 SET_NETDEV_DEV(dev, &edev->dev);
2851
2852 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2853 if (err)
2854 goto out1;
2855
2856 #ifdef HP100_DEBUG
2857 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2858 dev->base_addr);
2859 #endif
2860 dev_set_drvdata(gendev, dev);
2861 return 0;
2862 out1:
2863 free_netdev(dev);
2864 return err;
2865 }
2866
2867 static int hp100_eisa_remove(struct device *gendev)
2868 {
2869 struct net_device *dev = dev_get_drvdata(gendev);
2870 cleanup_dev(dev);
2871 return 0;
2872 }
2873
2874 static struct eisa_driver hp100_eisa_driver = {
2875 .id_table = hp100_eisa_tbl,
2876 .driver = {
2877 .name = "hp100",
2878 .probe = hp100_eisa_probe,
2879 .remove = hp100_eisa_remove,
2880 }
2881 };
2882
2883 static int hp100_pci_probe(struct pci_dev *pdev,
2884 const struct pci_device_id *ent)
2885 {
2886 struct net_device *dev;
2887 int ioaddr;
2888 u_short pci_command;
2889 int err;
2890
2891 if (pci_enable_device(pdev))
2892 return -ENODEV;
2893
2894 dev = alloc_etherdev(sizeof(struct hp100_private));
2895 if (!dev) {
2896 err = -ENOMEM;
2897 goto out0;
2898 }
2899
2900 SET_NETDEV_DEV(dev, &pdev->dev);
2901
2902 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2903 if (!(pci_command & PCI_COMMAND_IO)) {
2904 #ifdef HP100_DEBUG
2905 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2906 #endif
2907 pci_command |= PCI_COMMAND_IO;
2908 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2909 }
2910
2911 if (!(pci_command & PCI_COMMAND_MASTER)) {
2912 #ifdef HP100_DEBUG
2913 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2914 #endif
2915 pci_command |= PCI_COMMAND_MASTER;
2916 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2917 }
2918
2919 ioaddr = pci_resource_start(pdev, 0);
2920 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2921 if (err)
2922 goto out1;
2923
2924 #ifdef HP100_DEBUG
2925 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2926 #endif
2927 pci_set_drvdata(pdev, dev);
2928 return 0;
2929 out1:
2930 free_netdev(dev);
2931 out0:
2932 pci_disable_device(pdev);
2933 return err;
2934 }
2935
2936 static void hp100_pci_remove(struct pci_dev *pdev)
2937 {
2938 struct net_device *dev = pci_get_drvdata(pdev);
2939
2940 cleanup_dev(dev);
2941 pci_disable_device(pdev);
2942 }
2943
2944
2945 static struct pci_driver hp100_pci_driver = {
2946 .name = "hp100",
2947 .id_table = hp100_pci_tbl,
2948 .probe = hp100_pci_probe,
2949 .remove = hp100_pci_remove,
2950 };
2951
2952 /*
2953 * module section
2954 */
2955
2956 MODULE_LICENSE("GPL");
2957 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, "
2958 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2959 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2960
2961 /*
2962 * Note: to register three isa devices, use:
2963 * option hp100 hp100_port=0,0,0
2964 * to register one card at io 0x280 as eth239, use:
2965 * option hp100 hp100_port=0x280
2966 */
2967 #if defined(MODULE) && defined(CONFIG_ISA)
2968 #define HP100_DEVICES 5
2969 /* Parameters set by insmod */
2970 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2971 module_param_array(hp100_port, int, NULL, 0);
2972
2973 /* List of devices */
2974 static struct net_device *hp100_devlist[HP100_DEVICES];
2975
2976 static int __init hp100_isa_init(void)
2977 {
2978 struct net_device *dev;
2979 int i, err, cards = 0;
2980
2981 /* Don't autoprobe ISA bus */
2982 if (hp100_port[0] == 0)
2983 return -ENODEV;
2984
2985 /* Loop on all possible base addresses */
2986 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2987 dev = alloc_etherdev(sizeof(struct hp100_private));
2988 if (!dev) {
2989 while (cards > 0)
2990 cleanup_dev(hp100_devlist[--cards]);
2991
2992 return -ENOMEM;
2993 }
2994
2995 err = hp100_isa_probe(dev, hp100_port[i]);
2996 if (!err)
2997 hp100_devlist[cards++] = dev;
2998 else
2999 free_netdev(dev);
3000 }
3001
3002 return cards > 0 ? 0 : -ENODEV;
3003 }
3004
3005 static void hp100_isa_cleanup(void)
3006 {
3007 int i;
3008
3009 for (i = 0; i < HP100_DEVICES; i++) {
3010 struct net_device *dev = hp100_devlist[i];
3011 if (dev)
3012 cleanup_dev(dev);
3013 }
3014 }
3015 #else
3016 #define hp100_isa_init() (0)
3017 #define hp100_isa_cleanup() do { } while(0)
3018 #endif
3019
3020 static int __init hp100_module_init(void)
3021 {
3022 int err;
3023
3024 err = hp100_isa_init();
3025 if (err && err != -ENODEV)
3026 goto out;
3027 err = eisa_driver_register(&hp100_eisa_driver);
3028 if (err && err != -ENODEV)
3029 goto out2;
3030 err = pci_register_driver(&hp100_pci_driver);
3031 if (err && err != -ENODEV)
3032 goto out3;
3033 out:
3034 return err;
3035 out3:
3036 eisa_driver_unregister (&hp100_eisa_driver);
3037 out2:
3038 hp100_isa_cleanup();
3039 goto out;
3040 }
3041
3042
3043 static void __exit hp100_module_exit(void)
3044 {
3045 hp100_isa_cleanup();
3046 eisa_driver_unregister (&hp100_eisa_driver);
3047 pci_unregister_driver (&hp100_pci_driver);
3048 }
3049
3050 module_init(hp100_module_init)
3051 module_exit(hp100_module_exit)
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