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Save sram context after changing MPU, DSP or core clocks
[linux-ginger.git] / drivers / net / hp100.c
blobdd866513806274be18d79419e0d367fa07a26c8d
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/slab.h>
106 #include <linux/interrupt.h>
107 #include <linux/eisa.h>
108 #include <linux/pci.h>
109 #include <linux/dma-mapping.h>
110 #include <linux/spinlock.h>
111 #include <linux/netdevice.h>
112 #include <linux/etherdevice.h>
113 #include <linux/skbuff.h>
114 #include <linux/types.h>
115 #include <linux/delay.h>
116 #include <linux/init.h>
117 #include <linux/bitops.h>
118 #include <linux/jiffies.h>
119
120 #include <asm/io.h>
121
122 #include "hp100.h"
123
124 /*
125 * defines
126 */
127
128 #define HP100_BUS_ISA 0
129 #define HP100_BUS_EISA 1
130 #define HP100_BUS_PCI 2
131
132 #define HP100_REGION_SIZE 0x20 /* for ioports */
133 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
134
135 #define HP100_MAX_PACKET_SIZE (1536+4)
136 #define HP100_MIN_PACKET_SIZE 60
137
138 #ifndef HP100_DEFAULT_RX_RATIO
139 /* default - 75% onboard memory on the card are used for RX packets */
140 #define HP100_DEFAULT_RX_RATIO 75
141 #endif
142
143 #ifndef HP100_DEFAULT_PRIORITY_TX
144 /* default - don't enable transmit outgoing packets as priority */
145 #define HP100_DEFAULT_PRIORITY_TX 0
146 #endif
147
148 /*
149 * structures
150 */
151
152 struct hp100_private {
153 spinlock_t lock;
154 char id[HP100_SIG_LEN];
155 u_short chip;
156 u_short soft_model;
157 u_int memory_size;
158 u_int virt_memory_size;
159 u_short rx_ratio; /* 1 - 99 */
160 u_short priority_tx; /* != 0 - priority tx */
161 u_short mode; /* PIO, Shared Mem or Busmaster */
162 u_char bus;
163 struct pci_dev *pci_dev;
164 short mem_mapped; /* memory mapped access */
165 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
166 unsigned long mem_ptr_phys; /* physical memory mapped area */
167 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
168 int hub_status; /* was login to hub successful? */
169 u_char mac1_mode;
170 u_char mac2_mode;
171 u_char hash_bytes[8];
172 struct net_device_stats stats;
173
174 /* Rings for busmaster mode: */
175 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
176 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
177 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
178 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
179
180 hp100_ring_t rxring[MAX_RX_PDL];
181 hp100_ring_t txring[MAX_TX_PDL];
182
183 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
184 u_long whatever_offset; /* Offset to bus/phys/dma address */
185 int rxrcommit; /* # Rx PDLs commited to adapter */
186 int txrcommit; /* # Tx PDLs commited to adapter */
187 };
188
189 /*
190 * variables
191 */
192 #ifdef CONFIG_ISA
193 static const char *hp100_isa_tbl[] = {
194 "HWPF150", /* HP J2573 rev A */
195 "HWP1950", /* HP J2573 */
196 };
197 #endif
198
199 #ifdef CONFIG_EISA
200 static struct eisa_device_id hp100_eisa_tbl[] = {
201 { "HWPF180" }, /* HP J2577 rev A */
202 { "HWP1920" }, /* HP 27248B */
203 { "HWP1940" }, /* HP J2577 */
204 { "HWP1990" }, /* HP J2577 */
205 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
206 { "CPX0401" }, /* FreedomLine 100/VG */
207 { "" } /* Mandatory final entry ! */
208 };
209 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
210 #endif
211
212 #ifdef CONFIG_PCI
213 static struct pci_device_id hp100_pci_tbl[] = {
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
217 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
218 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
219 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
220 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
221 {} /* Terminating entry */
222 };
223 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
224 #endif
225
226 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
227 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
228 static int hp100_mode = 1;
229
230 module_param(hp100_rx_ratio, int, 0);
231 module_param(hp100_priority_tx, int, 0);
232 module_param(hp100_mode, int, 0);
233
234 /*
235 * prototypes
236 */
237
238 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
239 struct pci_dev *pci_dev);
240
241
242 static int hp100_open(struct net_device *dev);
243 static int hp100_close(struct net_device *dev);
244 static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
245 struct net_device *dev);
246 static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
247 struct net_device *dev);
248 static void hp100_rx(struct net_device *dev);
249 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
250 static void hp100_misc_interrupt(struct net_device *dev);
251 static void hp100_update_stats(struct net_device *dev);
252 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
253 static void hp100_set_multicast_list(struct net_device *dev);
254 static irqreturn_t hp100_interrupt(int irq, void *dev_id);
255 static void hp100_start_interface(struct net_device *dev);
256 static void hp100_stop_interface(struct net_device *dev);
257 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
258 static int hp100_sense_lan(struct net_device *dev);
259 static int hp100_login_to_vg_hub(struct net_device *dev,
260 u_short force_relogin);
261 static int hp100_down_vg_link(struct net_device *dev);
262 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
263 static void hp100_BM_shutdown(struct net_device *dev);
264 static void hp100_mmuinit(struct net_device *dev);
265 static void hp100_init_pdls(struct net_device *dev);
266 static int hp100_init_rxpdl(struct net_device *dev,
267 register hp100_ring_t * ringptr,
268 register u_int * pdlptr);
269 static int hp100_init_txpdl(struct net_device *dev,
270 register hp100_ring_t * ringptr,
271 register u_int * pdlptr);
272 static void hp100_rxfill(struct net_device *dev);
273 static void hp100_hwinit(struct net_device *dev);
274 static void hp100_clean_txring(struct net_device *dev);
275 #ifdef HP100_DEBUG
276 static void hp100_RegisterDump(struct net_device *dev);
277 #endif
278
279 /* Conversion to new PCI API :
280 * Convert an address in a kernel buffer to a bus/phys/dma address.
281 * This work *only* for memory fragments part of lp->page_vaddr,
282 * because it was properly DMA allocated via pci_alloc_consistent(),
283 * so we just need to "retrieve" the original mapping to bus/phys/dma
284 * address - Jean II */
285 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
286 {
287 struct hp100_private *lp = netdev_priv(dev);
288 return ((u_long) ptr) + lp->whatever_offset;
289 }
290
291 static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
292 {
293 return pci_map_single(lp->pci_dev, data,
294 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
295 }
296
297 /* TODO: This function should not really be needed in a good design... */
298 static void wait(void)
299 {
300 mdelay(1);
301 }
302
303 /*
304 * probe functions
305 * These functions should - if possible - avoid doing write operations
306 * since this could cause problems when the card is not installed.
307 */
308
309 /*
310 * Read board id and convert to string.
311 * Effectively same code as decode_eisa_sig
312 */
313 static __devinit const char *hp100_read_id(int ioaddr)
314 {
315 int i;
316 static char str[HP100_SIG_LEN];
317 unsigned char sig[4], sum;
318 unsigned short rev;
319
320 hp100_page(ID_MAC_ADDR);
321 sum = 0;
322 for (i = 0; i < 4; i++) {
323 sig[i] = hp100_inb(BOARD_ID + i);
324 sum += sig[i];
325 }
326
327 sum += hp100_inb(BOARD_ID + i);
328 if (sum != 0xff)
329 return NULL; /* bad checksum */
330
331 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
332 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
333 str[2] = (sig[1] & 0x1f) + ('A' - 1);
334 rev = (sig[2] << 8) | sig[3];
335 sprintf(str + 3, "%04X", rev);
336
337 return str;
338 }
339
340 #ifdef CONFIG_ISA
341 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
342 {
343 const char *sig;
344 int i;
345
346 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
347 goto err;
348
349 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
350 release_region(ioaddr, HP100_REGION_SIZE);
351 goto err;
352 }
353
354 sig = hp100_read_id(ioaddr);
355 release_region(ioaddr, HP100_REGION_SIZE);
356
357 if (sig == NULL)
358 goto err;
359
360 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
361 if (!strcmp(hp100_isa_tbl[i], sig))
362 break;
363
364 }
365
366 if (i < ARRAY_SIZE(hp100_isa_tbl))
367 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
368 err:
369 return -ENODEV;
370
371 }
372 /*
373 * Probe for ISA board.
374 * EISA and PCI are handled by device infrastructure.
375 */
376
377 static int __init hp100_isa_probe(struct net_device *dev, int addr)
378 {
379 int err = -ENODEV;
380
381 /* Probe for a specific ISA address */
382 if (addr > 0xff && addr < 0x400)
383 err = hp100_isa_probe1(dev, addr);
384
385 else if (addr != 0)
386 err = -ENXIO;
387
388 else {
389 /* Probe all ISA possible port regions */
390 for (addr = 0x100; addr < 0x400; addr += 0x20) {
391 err = hp100_isa_probe1(dev, addr);
392 if (!err)
393 break;
394 }
395 }
396 return err;
397 }
398 #endif /* CONFIG_ISA */
399
400 #if !defined(MODULE) && defined(CONFIG_ISA)
401 struct net_device * __init hp100_probe(int unit)
402 {
403 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
404 int err;
405
406 if (!dev)
407 return ERR_PTR(-ENODEV);
408
409 #ifdef HP100_DEBUG_B
410 hp100_outw(0x4200, TRACE);
411 printk("hp100: %s: probe\n", dev->name);
412 #endif
413
414 if (unit >= 0) {
415 sprintf(dev->name, "eth%d", unit);
416 netdev_boot_setup_check(dev);
417 }
418
419 err = hp100_isa_probe(dev, dev->base_addr);
420 if (err)
421 goto out;
422
423 return dev;
424 out:
425 free_netdev(dev);
426 return ERR_PTR(err);
427 }
428 #endif /* !MODULE && CONFIG_ISA */
429
430 static const struct net_device_ops hp100_bm_netdev_ops = {
431 .ndo_open = hp100_open,
432 .ndo_stop = hp100_close,
433 .ndo_start_xmit = hp100_start_xmit_bm,
434 .ndo_get_stats = hp100_get_stats,
435 .ndo_set_multicast_list = hp100_set_multicast_list,
436 .ndo_change_mtu = eth_change_mtu,
437 .ndo_set_mac_address = eth_mac_addr,
438 .ndo_validate_addr = eth_validate_addr,
439 };
440
441 static const struct net_device_ops hp100_netdev_ops = {
442 .ndo_open = hp100_open,
443 .ndo_stop = hp100_close,
444 .ndo_start_xmit = hp100_start_xmit,
445 .ndo_get_stats = hp100_get_stats,
446 .ndo_set_multicast_list = hp100_set_multicast_list,
447 .ndo_change_mtu = eth_change_mtu,
448 .ndo_set_mac_address = eth_mac_addr,
449 .ndo_validate_addr = eth_validate_addr,
450 };
451
452 static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
453 u_char bus, struct pci_dev *pci_dev)
454 {
455 int i;
456 int err = -ENODEV;
457 const char *eid;
458 u_int chip;
459 u_char uc;
460 u_int memory_size = 0, virt_memory_size = 0;
461 u_short local_mode, lsw;
462 short mem_mapped;
463 unsigned long mem_ptr_phys;
464 void __iomem *mem_ptr_virt;
465 struct hp100_private *lp;
466
467 #ifdef HP100_DEBUG_B
468 hp100_outw(0x4201, TRACE);
469 printk("hp100: %s: probe1\n", dev->name);
470 #endif
471
472 /* memory region for programmed i/o */
473 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
474 goto out1;
475
476 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
477 goto out2;
478
479 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
480 #ifdef HP100_DEBUG
481 if (chip == HP100_CHIPID_SHASTA)
482 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
483 else if (chip == HP100_CHIPID_RAINIER)
484 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
485 else if (chip == HP100_CHIPID_LASSEN)
486 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
487 else
488 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
489 #endif
490
491 dev->base_addr = ioaddr;
492
493 eid = hp100_read_id(ioaddr);
494 if (eid == NULL) { /* bad checksum? */
495 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
496 goto out2;
497 }
498
499 hp100_page(ID_MAC_ADDR);
500 for (i = uc = 0; i < 7; i++)
501 uc += hp100_inb(LAN_ADDR + i);
502 if (uc != 0xff) {
503 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
504 err = -EIO;
505 goto out2;
506 }
507
508 /* Make sure, that all registers are correctly updated... */
509
510 hp100_load_eeprom(dev, ioaddr);
511 wait();
512
513 /*
514 * Determine driver operation mode
515 *
516 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
517 * force driver modes:
518 * hp100_mode=1 -> default, use busmaster mode if configured.
519 * hp100_mode=2 -> enable shared memory mode
520 * hp100_mode=3 -> force use of i/o mapped mode.
521 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
522 */
523
524 /*
525 * LSW values:
526 * 0x2278 -> J2585B, PnP shared memory mode
527 * 0x2270 -> J2585B, shared memory mode, 0xdc000
528 * 0xa23c -> J2585B, I/O mapped mode
529 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
530 * 0x2220 -> EISA HP, I/O (Shasta Chip)
531 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
532 */
533
534 #if 0
535 local_mode = 0x2270;
536 hp100_outw(0xfefe, OPTION_LSW);
537 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
538 #endif
539
540 /* hp100_mode value maybe used in future by another card */
541 local_mode = hp100_mode;
542 if (local_mode < 1 || local_mode > 4)
543 local_mode = 1; /* default */
544 #ifdef HP100_DEBUG
545 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
546 hp100_inw(OPTION_LSW));
547 #endif
548
549 if (local_mode == 3) {
550 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
551 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
552 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
553 printk("hp100: IO mapped mode forced.\n");
554 } else if (local_mode == 2) {
555 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
556 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
557 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
558 printk("hp100: Shared memory mode requested.\n");
559 } else if (local_mode == 4) {
560 if (chip == HP100_CHIPID_LASSEN) {
561 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
562 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
563 printk("hp100: Busmaster mode requested.\n");
564 }
565 local_mode = 1;
566 }
567
568 if (local_mode == 1) { /* default behaviour */
569 lsw = hp100_inw(OPTION_LSW);
570
571 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
572 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
573 #ifdef HP100_DEBUG
574 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
575 #endif
576 local_mode = 3;
577 } else if (chip == HP100_CHIPID_LASSEN &&
578 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
579 /* Conversion to new PCI API :
580 * I don't have the doc, but I assume that the card
581 * can map the full 32bit address space.
582 * Also, we can have EISA Busmaster cards (not tested),
583 * so beware !!! - Jean II */
584 if((bus == HP100_BUS_PCI) &&
585 (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)))) {
586 /* Gracefully fallback to shared memory */
587 goto busmasterfail;
588 }
589 printk("hp100: Busmaster mode enabled.\n");
590 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
591 } else {
592 busmasterfail:
593 #ifdef HP100_DEBUG
594 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
595 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
596 #endif
597 /* In this case, try shared memory mode */
598 local_mode = 2;
599 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
600 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
601 }
602 }
603 #ifdef HP100_DEBUG
604 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
605 #endif
606
607 /* Check for shared memory on the card, eventually remap it */
608 hp100_page(HW_MAP);
609 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
610 mem_ptr_phys = 0UL;
611 mem_ptr_virt = NULL;
612 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
613 virt_memory_size = 0;
614
615 /* For memory mapped or busmaster mode, we want the memory address */
616 if (mem_mapped || (local_mode == 1)) {
617 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
618 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
619
620 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
621 printk("hp100: Can only use programmed i/o mode.\n");
622 mem_ptr_phys = 0;
623 mem_mapped = 0;
624 local_mode = 3; /* Use programmed i/o */
625 }
626
627 /* We do not need access to shared memory in busmaster mode */
628 /* However in slave mode we need to remap high (>1GB) card memory */
629 if (local_mode != 1) { /* = not busmaster */
630 /* We try with smaller memory sizes, if ioremap fails */
631 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
632 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
633 #ifdef HP100_DEBUG
634 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
635 #endif
636 } else {
637 #ifdef HP100_DEBUG
638 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);
639 #endif
640 break;
641 }
642 }
643
644 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
645 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
646 local_mode = 3;
647 virt_memory_size = 0;
648 }
649 }
650 }
651
652 if (local_mode == 3) { /* io mapped forced */
653 mem_mapped = 0;
654 mem_ptr_phys = 0;
655 mem_ptr_virt = NULL;
656 printk("hp100: Using (slow) programmed i/o mode.\n");
657 }
658
659 /* Initialise the "private" data structure for this card. */
660 lp = netdev_priv(dev);
661
662 spin_lock_init(&lp->lock);
663 strlcpy(lp->id, eid, HP100_SIG_LEN);
664 lp->chip = chip;
665 lp->mode = local_mode;
666 lp->bus = bus;
667 lp->pci_dev = pci_dev;
668 lp->priority_tx = hp100_priority_tx;
669 lp->rx_ratio = hp100_rx_ratio;
670 lp->mem_ptr_phys = mem_ptr_phys;
671 lp->mem_ptr_virt = mem_ptr_virt;
672 hp100_page(ID_MAC_ADDR);
673 lp->soft_model = hp100_inb(SOFT_MODEL);
674 lp->mac1_mode = HP100_MAC1MODE3;
675 lp->mac2_mode = HP100_MAC2MODE3;
676 memset(&lp->hash_bytes, 0x00, 8);
677
678 dev->base_addr = ioaddr;
679
680 lp->memory_size = memory_size;
681 lp->virt_memory_size = virt_memory_size;
682 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
683
684 if (lp->mode == 1) /* busmaster */
685 dev->netdev_ops = &hp100_bm_netdev_ops;
686 else
687 dev->netdev_ops = &hp100_netdev_ops;
688
689 /* Ask the card for which IRQ line it is configured */
690 if (bus == HP100_BUS_PCI) {
691 dev->irq = pci_dev->irq;
692 } else {
693 hp100_page(HW_MAP);
694 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
695 if (dev->irq == 2)
696 dev->irq = 9;
697 }
698
699 if (lp->mode == 1) /* busmaster */
700 dev->dma = 4;
701
702 /* Ask the card for its MAC address and store it for later use. */
703 hp100_page(ID_MAC_ADDR);
704 for (i = uc = 0; i < 6; i++)
705 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
706
707 /* Reset statistics (counters) */
708 hp100_clear_stats(lp, ioaddr);
709
710 /* If busmaster mode is wanted, a dma-capable memory area is needed for
711 * the rx and tx PDLs
712 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
713 * needed for the allocation of the memory area.
714 */
715
716 /* TODO: We do not need this with old cards, where PDLs are stored
717 * in the cards shared memory area. But currently, busmaster has been
718 * implemented/tested only with the lassen chip anyway... */
719 if (lp->mode == 1) { /* busmaster */
720 dma_addr_t page_baddr;
721 /* Get physically continous memory for TX & RX PDLs */
722 /* Conversion to new PCI API :
723 * Pages are always aligned and zeroed, no need to it ourself.
724 * Doc says should be OK for EISA bus as well - Jean II */
725 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
726 err = -ENOMEM;
727 goto out2;
728 }
729 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
730
731 #ifdef HP100_DEBUG_BM
732 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);
733 #endif
734 lp->rxrcommit = lp->txrcommit = 0;
735 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
736 lp->txrhead = lp->txrtail = &(lp->txring[0]);
737 }
738
739 /* Initialise the card. */
740 /* (I'm not really sure if it's a good idea to do this during probing, but
741 * like this it's assured that the lan connection type can be sensed
742 * correctly)
743 */
744 hp100_hwinit(dev);
745
746 /* Try to find out which kind of LAN the card is connected to. */
747 lp->lan_type = hp100_sense_lan(dev);
748
749 /* Print out a message what about what we think we have probed. */
750 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
751 switch (bus) {
752 case HP100_BUS_EISA:
753 printk("EISA");
754 break;
755 case HP100_BUS_PCI:
756 printk("PCI");
757 break;
758 default:
759 printk("ISA");
760 break;
761 }
762 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
763
764 if (lp->mode == 2) { /* memory mapped */
765 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
766 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
767 if (mem_ptr_virt)
768 printk(" (virtual base %p)", mem_ptr_virt);
769 printk(".\n");
770
771 /* Set for info when doing ifconfig */
772 dev->mem_start = mem_ptr_phys;
773 dev->mem_end = mem_ptr_phys + lp->memory_size;
774 }
775
776 printk("hp100: ");
777 if (lp->lan_type != HP100_LAN_ERR)
778 printk("Adapter is attached to ");
779 switch (lp->lan_type) {
780 case HP100_LAN_100:
781 printk("100Mb/s Voice Grade AnyLAN network.\n");
782 break;
783 case HP100_LAN_10:
784 printk("10Mb/s network (10baseT).\n");
785 break;
786 case HP100_LAN_COAX:
787 printk("10Mb/s network (coax).\n");
788 break;
789 default:
790 printk("Warning! Link down.\n");
791 }
792
793 err = register_netdev(dev);
794 if (err)
795 goto out3;
796
797 return 0;
798 out3:
799 if (local_mode == 1)
800 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
801 lp->page_vaddr_algn,
802 virt_to_whatever(dev, lp->page_vaddr_algn));
803 if (mem_ptr_virt)
804 iounmap(mem_ptr_virt);
805 out2:
806 release_region(ioaddr, HP100_REGION_SIZE);
807 out1:
808 return err;
809 }
810
811 /* This procedure puts the card into a stable init state */
812 static void hp100_hwinit(struct net_device *dev)
813 {
814 int ioaddr = dev->base_addr;
815 struct hp100_private *lp = netdev_priv(dev);
816
817 #ifdef HP100_DEBUG_B
818 hp100_outw(0x4202, TRACE);
819 printk("hp100: %s: hwinit\n", dev->name);
820 #endif
821
822 /* Initialise the card. -------------------------------------------- */
823
824 /* Clear all pending Ints and disable Ints */
825 hp100_page(PERFORMANCE);
826 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
827 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
828
829 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
830 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
831
832 if (lp->mode == 1) {
833 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
834 wait();
835 } else {
836 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
837 hp100_cascade_reset(dev, 1);
838 hp100_page(MAC_CTRL);
839 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
840 }
841
842 /* Initiate EEPROM reload */
843 hp100_load_eeprom(dev, 0);
844
845 wait();
846
847 /* Go into reset again. */
848 hp100_cascade_reset(dev, 1);
849
850 /* Set Option Registers to a safe state */
851 hp100_outw(HP100_DEBUG_EN |
852 HP100_RX_HDR |
853 HP100_EE_EN |
854 HP100_BM_WRITE |
855 HP100_BM_READ | HP100_RESET_HB |
856 HP100_FAKE_INT |
857 HP100_INT_EN |
858 HP100_MEM_EN |
859 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
860
861 hp100_outw(HP100_TRI_INT |
862 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
863
864 hp100_outb(HP100_PRIORITY_TX |
865 HP100_ADV_NXT_PKT |
866 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
867
868 /* TODO: Configure MMU for Ram Test. */
869 /* TODO: Ram Test. */
870
871 /* Re-check if adapter is still at same i/o location */
872 /* (If the base i/o in eeprom has been changed but the */
873 /* registers had not been changed, a reload of the eeprom */
874 /* would move the adapter to the address stored in eeprom */
875
876 /* TODO: Code to implement. */
877
878 /* Until here it was code from HWdiscover procedure. */
879 /* Next comes code from mmuinit procedure of SCO BM driver which is
880 * called from HWconfigure in the SCO driver. */
881
882 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
883 * multicast filter...
884 */
885 hp100_mmuinit(dev);
886
887 /* We don't turn the interrupts on here - this is done by start_interface. */
888 wait(); /* TODO: Do we really need this? */
889
890 /* Enable Hardware (e.g. unreset) */
891 hp100_cascade_reset(dev, 0);
892
893 /* ------- initialisation complete ----------- */
894
895 /* Finally try to log in the Hub if there may be a VG connection. */
896 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
897 hp100_login_to_vg_hub(dev, 0); /* relogin */
898
899 }
900
901
902 /*
903 * mmuinit - Reinitialise Cascade MMU and MAC settings.
904 * Note: Must already be in reset and leaves card in reset.
905 */
906 static void hp100_mmuinit(struct net_device *dev)
907 {
908 int ioaddr = dev->base_addr;
909 struct hp100_private *lp = netdev_priv(dev);
910 int i;
911
912 #ifdef HP100_DEBUG_B
913 hp100_outw(0x4203, TRACE);
914 printk("hp100: %s: mmuinit\n", dev->name);
915 #endif
916
917 #ifdef HP100_DEBUG
918 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
919 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
920 return;
921 }
922 #endif
923
924 /* Make sure IRQs are masked off and ack'ed. */
925 hp100_page(PERFORMANCE);
926 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
927 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
928
929 /*
930 * Enable Hardware
931 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
932 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
933 * - Clear Priority, Advance Pkt and Xmit Cmd
934 */
935
936 hp100_outw(HP100_DEBUG_EN |
937 HP100_RX_HDR |
938 HP100_EE_EN | HP100_RESET_HB |
939 HP100_IO_EN |
940 HP100_FAKE_INT |
941 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
942
943 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
944
945 if (lp->mode == 1) { /* busmaster */
946 hp100_outw(HP100_BM_WRITE |
947 HP100_BM_READ |
948 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
949 } else if (lp->mode == 2) { /* memory mapped */
950 hp100_outw(HP100_BM_WRITE |
951 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
952 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
953 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
954 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
955 } else if (lp->mode == 3) { /* i/o mapped mode */
956 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
957 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
958 }
959
960 hp100_page(HW_MAP);
961 hp100_outb(0, EARLYRXCFG);
962 hp100_outw(0, EARLYTXCFG);
963
964 /*
965 * Enable Bus Master mode
966 */
967 if (lp->mode == 1) { /* busmaster */
968 /* Experimental: Set some PCI configuration bits */
969 hp100_page(HW_MAP);
970 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
971 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
972
973 /* PCI Bus failures should result in a Misc. Interrupt */
974 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
975
976 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
977 hp100_page(HW_MAP);
978 /* Use Burst Mode and switch on PAGE_CK */
979 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
980 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
981 hp100_orb(HP100_BM_PAGE_CK, BM);
982 hp100_orb(HP100_BM_MASTER, BM);
983 } else { /* not busmaster */
984
985 hp100_page(HW_MAP);
986 hp100_andb(~HP100_BM_MASTER, BM);
987 }
988
989 /*
990 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
991 */
992 hp100_page(MMU_CFG);
993 if (lp->mode == 1) { /* only needed for Busmaster */
994 int xmit_stop, recv_stop;
995
996 if ((lp->chip == HP100_CHIPID_RAINIER)
997 || (lp->chip == HP100_CHIPID_SHASTA)) {
998 int pdl_stop;
999
1000 /*
1001 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
1002 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
1003 * to the next higher 1k boundary) bytes for the rx-pdl's
1004 * Note: For non-etr chips the transmit stop register must be
1005 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
1006 */
1007 pdl_stop = lp->memory_size;
1008 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
1009 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
1010 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
1011 #ifdef HP100_DEBUG_BM
1012 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
1013 #endif
1014 } else {
1015 /* ETR chip (Lassen) in busmaster mode */
1016 xmit_stop = (lp->memory_size) - 1;
1017 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1018 }
1019
1020 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1021 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1022 #ifdef HP100_DEBUG_BM
1023 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1024 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1025 #endif
1026 } else {
1027 /* Slave modes (memory mapped and programmed io) */
1028 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1029 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1030 #ifdef HP100_DEBUG
1031 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1032 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1033 #endif
1034 }
1035
1036 /* Write MAC address into page 1 */
1037 hp100_page(MAC_ADDRESS);
1038 for (i = 0; i < 6; i++)
1039 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1040
1041 /* Zero the multicast hash registers */
1042 for (i = 0; i < 8; i++)
1043 hp100_outb(0x0, HASH_BYTE0 + i);
1044
1045 /* Set up MAC defaults */
1046 hp100_page(MAC_CTRL);
1047
1048 /* Go to LAN Page and zero all filter bits */
1049 /* Zero accept error, accept multicast, accept broadcast and accept */
1050 /* all directed packet bits */
1051 hp100_andb(~(HP100_RX_EN |
1052 HP100_TX_EN |
1053 HP100_ACC_ERRORED |
1054 HP100_ACC_MC |
1055 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1056
1057 hp100_outb(0x00, MAC_CFG_2);
1058
1059 /* Zero the frame format bit. This works around a training bug in the */
1060 /* new hubs. */
1061 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1062
1063 if (lp->priority_tx)
1064 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1065 else
1066 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1067
1068 hp100_outb(HP100_ADV_NXT_PKT |
1069 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1070
1071 /* If busmaster, initialize the PDLs */
1072 if (lp->mode == 1)
1073 hp100_init_pdls(dev);
1074
1075 /* Go to performance page and initalize isr and imr registers */
1076 hp100_page(PERFORMANCE);
1077 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1078 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1079 }
1080
1081 /*
1082 * open/close functions
1083 */
1084
1085 static int hp100_open(struct net_device *dev)
1086 {
1087 struct hp100_private *lp = netdev_priv(dev);
1088 #ifdef HP100_DEBUG_B
1089 int ioaddr = dev->base_addr;
1090 #endif
1091
1092 #ifdef HP100_DEBUG_B
1093 hp100_outw(0x4204, TRACE);
1094 printk("hp100: %s: open\n", dev->name);
1095 #endif
1096
1097 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1098 if (request_irq(dev->irq, hp100_interrupt,
1099 lp->bus == HP100_BUS_PCI || lp->bus ==
1100 HP100_BUS_EISA ? IRQF_SHARED : IRQF_DISABLED,
1101 "hp100", dev)) {
1102 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1103 return -EAGAIN;
1104 }
1105
1106 dev->trans_start = jiffies;
1107 netif_start_queue(dev);
1108
1109 lp->lan_type = hp100_sense_lan(dev);
1110 lp->mac1_mode = HP100_MAC1MODE3;
1111 lp->mac2_mode = HP100_MAC2MODE3;
1112 memset(&lp->hash_bytes, 0x00, 8);
1113
1114 hp100_stop_interface(dev);
1115
1116 hp100_hwinit(dev);
1117
1118 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1119
1120 return 0;
1121 }
1122
1123 /* The close function is called when the interface is to be brought down */
1124 static int hp100_close(struct net_device *dev)
1125 {
1126 int ioaddr = dev->base_addr;
1127 struct hp100_private *lp = netdev_priv(dev);
1128
1129 #ifdef HP100_DEBUG_B
1130 hp100_outw(0x4205, TRACE);
1131 printk("hp100: %s: close\n", dev->name);
1132 #endif
1133
1134 hp100_page(PERFORMANCE);
1135 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1136
1137 hp100_stop_interface(dev);
1138
1139 if (lp->lan_type == HP100_LAN_100)
1140 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1141
1142 netif_stop_queue(dev);
1143
1144 free_irq(dev->irq, dev);
1145
1146 #ifdef HP100_DEBUG
1147 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1148 hp100_inw(OPTION_LSW));
1149 #endif
1150
1151 return 0;
1152 }
1153
1154
1155 /*
1156 * Configure the PDL Rx rings and LAN
1157 */
1158 static void hp100_init_pdls(struct net_device *dev)
1159 {
1160 struct hp100_private *lp = netdev_priv(dev);
1161 hp100_ring_t *ringptr;
1162 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1163 int i;
1164
1165 #ifdef HP100_DEBUG_B
1166 int ioaddr = dev->base_addr;
1167 #endif
1168
1169 #ifdef HP100_DEBUG_B
1170 hp100_outw(0x4206, TRACE);
1171 printk("hp100: %s: init pdls\n", dev->name);
1172 #endif
1173
1174 if (!lp->page_vaddr_algn)
1175 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1176 else {
1177 /* pageptr shall point into the DMA accessible memory region */
1178 /* we use this pointer to status the upper limit of allocated */
1179 /* memory in the allocated page. */
1180 /* note: align the pointers to the pci cache line size */
1181 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1182 pageptr = lp->page_vaddr_algn;
1183
1184 lp->rxrcommit = 0;
1185 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1186
1187 /* Initialise Rx Ring */
1188 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1189 lp->rxring[i].next = ringptr;
1190 ringptr = &(lp->rxring[i]);
1191 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1192 }
1193
1194 /* Initialise Tx Ring */
1195 lp->txrcommit = 0;
1196 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1197 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1198 lp->txring[i].next = ringptr;
1199 ringptr = &(lp->txring[i]);
1200 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1201 }
1202 }
1203 }
1204
1205
1206 /* These functions "format" the entries in the pdl structure */
1207 /* They return how much memory the fragments need. */
1208 static int hp100_init_rxpdl(struct net_device *dev,
1209 register hp100_ring_t * ringptr,
1210 register u32 * pdlptr)
1211 {
1212 /* pdlptr is starting address for this pdl */
1213
1214 if (0 != (((unsigned long) pdlptr) & 0xf))
1215 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1216 dev->name, (unsigned long) pdlptr);
1217
1218 ringptr->pdl = pdlptr + 1;
1219 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1220 ringptr->skb = (void *) NULL;
1221
1222 /*
1223 * Write address and length of first PDL Fragment (which is used for
1224 * storing the RX-Header
1225 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1226 * store this information. (PDH is at offset 0x04)
1227 */
1228 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1229
1230 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1231 *(pdlptr + 3) = 4; /* Length Frag 1 */
1232
1233 return roundup(MAX_RX_FRAG * 2 + 2, 4);
1234 }
1235
1236
1237 static int hp100_init_txpdl(struct net_device *dev,
1238 register hp100_ring_t * ringptr,
1239 register u32 * pdlptr)
1240 {
1241 if (0 != (((unsigned long) pdlptr) & 0xf))
1242 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1243
1244 ringptr->pdl = pdlptr; /* +1; */
1245 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1246 ringptr->skb = (void *) NULL;
1247
1248 return roundup(MAX_TX_FRAG * 2 + 2, 4);
1249 }
1250
1251 /*
1252 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1253 * for possible odd word alignment rounding up to next dword and set PDL
1254 * address for fragment#2
1255 * Returns: 0 if unable to allocate skb_buff
1256 * 1 if successful
1257 */
1258 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1259 struct net_device *dev)
1260 {
1261 #ifdef HP100_DEBUG_B
1262 int ioaddr = dev->base_addr;
1263 #endif
1264 #ifdef HP100_DEBUG_BM
1265 u_int *p;
1266 #endif
1267
1268 #ifdef HP100_DEBUG_B
1269 hp100_outw(0x4207, TRACE);
1270 printk("hp100: %s: build rx pdl\n", dev->name);
1271 #endif
1272
1273 /* Allocate skb buffer of maximum size */
1274 /* Note: This depends on the alloc_skb functions allocating more
1275 * space than requested, i.e. aligning to 16bytes */
1276
1277 ringptr->skb = dev_alloc_skb(roundup(MAX_ETHER_SIZE + 2, 4));
1278
1279 if (NULL != ringptr->skb) {
1280 /*
1281 * Reserve 2 bytes at the head of the buffer to land the IP header
1282 * on a long word boundary (According to the Network Driver section
1283 * in the Linux KHG, this should help to increase performance.)
1284 */
1285 skb_reserve(ringptr->skb, 2);
1286
1287 ringptr->skb->dev = dev;
1288 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1289
1290 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1291 /* Note: 1st Fragment is used for the 4 byte packet status
1292 * (receive header). Its PDL entries are set up by init_rxpdl. So
1293 * here we only have to set up the PDL fragment entries for the data
1294 * part. Those 4 bytes will be stored in the DMA memory region
1295 * directly before the PDL.
1296 */
1297 #ifdef HP100_DEBUG_BM
1298 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1299 dev->name, (u_int) ringptr->pdl,
1300 roundup(MAX_ETHER_SIZE + 2, 4),
1301 (unsigned int) ringptr->skb->data);
1302 #endif
1303
1304 /* Conversion to new PCI API : map skbuf data to PCI bus.
1305 * Doc says it's OK for EISA as well - Jean II */
1306 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1307 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1308 ringptr->skb->data);
1309 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1310
1311 #ifdef HP100_DEBUG_BM
1312 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1313 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1314 #endif
1315 return (1);
1316 }
1317 /* else: */
1318 /* alloc_skb failed (no memory) -> still can receive the header
1319 * fragment into PDL memory. make PDL safe by clearing msgptr and
1320 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1321 */
1322 #ifdef HP100_DEBUG_BM
1323 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1324 #endif
1325
1326 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1327
1328 return (0);
1329 }
1330
1331 /*
1332 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1333 *
1334 * Makes assumption that skb's are always contiguous memory areas and
1335 * therefore PDLs contain only 2 physical fragments.
1336 * - While the number of Rx PDLs with buffers is less than maximum
1337 * a. Get a maximum packet size skb
1338 * b. Put the physical address of the buffer into the PDL.
1339 * c. Output physical address of PDL to adapter.
1340 */
1341 static void hp100_rxfill(struct net_device *dev)
1342 {
1343 int ioaddr = dev->base_addr;
1344
1345 struct hp100_private *lp = netdev_priv(dev);
1346 hp100_ring_t *ringptr;
1347
1348 #ifdef HP100_DEBUG_B
1349 hp100_outw(0x4208, TRACE);
1350 printk("hp100: %s: rxfill\n", dev->name);
1351 #endif
1352
1353 hp100_page(PERFORMANCE);
1354
1355 while (lp->rxrcommit < MAX_RX_PDL) {
1356 /*
1357 ** Attempt to get a buffer and build a Rx PDL.
1358 */
1359 ringptr = lp->rxrtail;
1360 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1361 return; /* None available, return */
1362 }
1363
1364 /* Hand this PDL over to the card */
1365 /* Note: This needs performance page selected! */
1366 #ifdef HP100_DEBUG_BM
1367 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1368 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1369 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1370 #endif
1371
1372 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1373
1374 lp->rxrcommit += 1;
1375 lp->rxrtail = ringptr->next;
1376 }
1377 }
1378
1379 /*
1380 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1381 */
1382
1383 static void hp100_BM_shutdown(struct net_device *dev)
1384 {
1385 int ioaddr = dev->base_addr;
1386 struct hp100_private *lp = netdev_priv(dev);
1387 unsigned long time;
1388
1389 #ifdef HP100_DEBUG_B
1390 hp100_outw(0x4209, TRACE);
1391 printk("hp100: %s: bm shutdown\n", dev->name);
1392 #endif
1393
1394 hp100_page(PERFORMANCE);
1395 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1396 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1397
1398 /* Ensure Interrupts are off */
1399 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1400
1401 /* Disable all MAC activity */
1402 hp100_page(MAC_CTRL);
1403 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1404
1405 /* If cascade MMU is not already in reset */
1406 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1407 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1408 * MMU pointers will not be reset out from underneath
1409 */
1410 hp100_page(MAC_CTRL);
1411 for (time = 0; time < 5000; time++) {
1412 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1413 break;
1414 }
1415
1416 /* Shutdown algorithm depends on the generation of Cascade */
1417 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1418 /* Disable Busmaster mode and wait for bit to go to zero. */
1419 hp100_page(HW_MAP);
1420 hp100_andb(~HP100_BM_MASTER, BM);
1421 /* 100 ms timeout */
1422 for (time = 0; time < 32000; time++) {
1423 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1424 break;
1425 }
1426 } else { /* Shasta or Rainier Shutdown/Reset */
1427 /* To ensure all bus master inloading activity has ceased,
1428 * wait for no Rx PDAs or no Rx packets on card.
1429 */
1430 hp100_page(PERFORMANCE);
1431 /* 100 ms timeout */
1432 for (time = 0; time < 10000; time++) {
1433 /* RX_PDL: PDLs not executed. */
1434 /* RX_PKT_CNT: RX'd packets on card. */
1435 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1436 break;
1437 }
1438
1439 if (time >= 10000)
1440 printk("hp100: %s: BM shutdown error.\n", dev->name);
1441
1442 /* To ensure all bus master outloading activity has ceased,
1443 * wait until the Tx PDA count goes to zero or no more Tx space
1444 * available in the Tx region of the card.
1445 */
1446 /* 100 ms timeout */
1447 for (time = 0; time < 10000; time++) {
1448 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1449 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1450 break;
1451 }
1452
1453 /* Disable Busmaster mode */
1454 hp100_page(HW_MAP);
1455 hp100_andb(~HP100_BM_MASTER, BM);
1456 } /* end of shutdown procedure for non-etr parts */
1457
1458 hp100_cascade_reset(dev, 1);
1459 }
1460 hp100_page(PERFORMANCE);
1461 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1462 /* Busmaster mode should be shut down now. */
1463 }
1464
1465 static int hp100_check_lan(struct net_device *dev)
1466 {
1467 struct hp100_private *lp = netdev_priv(dev);
1468
1469 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1470 hp100_stop_interface(dev);
1471 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1472 printk("hp100: %s: no connection found - check wire\n", dev->name);
1473 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1474 return -EIO;
1475 }
1476 if (lp->lan_type == HP100_LAN_100)
1477 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1478 hp100_start_interface(dev);
1479 }
1480 return 0;
1481 }
1482
1483 /*
1484 * transmit functions
1485 */
1486
1487 /* tx function for busmaster mode */
1488 static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
1489 struct net_device *dev)
1490 {
1491 unsigned long flags;
1492 int i, ok_flag;
1493 int ioaddr = dev->base_addr;
1494 struct hp100_private *lp = netdev_priv(dev);
1495 hp100_ring_t *ringptr;
1496
1497 #ifdef HP100_DEBUG_B
1498 hp100_outw(0x4210, TRACE);
1499 printk("hp100: %s: start_xmit_bm\n", dev->name);
1500 #endif
1501 if (skb->len <= 0)
1502 goto drop;
1503
1504 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1505 return NETDEV_TX_OK;
1506
1507 /* Get Tx ring tail pointer */
1508 if (lp->txrtail->next == lp->txrhead) {
1509 /* No memory. */
1510 #ifdef HP100_DEBUG
1511 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1512 #endif
1513 /* not waited long enough since last tx? */
1514 if (time_before(jiffies, dev->trans_start + HZ))
1515 goto drop;
1516
1517 if (hp100_check_lan(dev))
1518 goto drop;
1519
1520 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1521 /* we have a 100Mb/s adapter but it isn't connected to hub */
1522 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1523 hp100_stop_interface(dev);
1524 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1525 hp100_start_interface(dev);
1526 } else {
1527 spin_lock_irqsave(&lp->lock, flags);
1528 hp100_ints_off(); /* Useful ? Jean II */
1529 i = hp100_sense_lan(dev);
1530 hp100_ints_on();
1531 spin_unlock_irqrestore(&lp->lock, flags);
1532 if (i == HP100_LAN_ERR)
1533 printk("hp100: %s: link down detected\n", dev->name);
1534 else if (lp->lan_type != i) { /* cable change! */
1535 /* it's very hard - all network settings must be changed!!! */
1536 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1537 lp->lan_type = i;
1538 hp100_stop_interface(dev);
1539 if (lp->lan_type == HP100_LAN_100)
1540 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1541 hp100_start_interface(dev);
1542 } else {
1543 printk("hp100: %s: interface reset\n", dev->name);
1544 hp100_stop_interface(dev);
1545 if (lp->lan_type == HP100_LAN_100)
1546 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1547 hp100_start_interface(dev);
1548 }
1549 }
1550
1551 dev->trans_start = jiffies;
1552 goto drop;
1553 }
1554
1555 /*
1556 * we have to turn int's off before modifying this, otherwise
1557 * a tx_pdl_cleanup could occur at the same time
1558 */
1559 spin_lock_irqsave(&lp->lock, flags);
1560 ringptr = lp->txrtail;
1561 lp->txrtail = ringptr->next;
1562
1563 /* Check whether packet has minimal packet size */
1564 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1565 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1566
1567 ringptr->skb = skb;
1568 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1569 if (lp->chip == HP100_CHIPID_SHASTA) {
1570 /* TODO:Could someone who has the EISA card please check if this works? */
1571 ringptr->pdl[2] = i;
1572 } else { /* Lassen */
1573 /* In the PDL, don't use the padded size but the real packet size: */
1574 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1575 }
1576 /* Conversion to new PCI API : map skbuf data to PCI bus.
1577 * Doc says it's OK for EISA as well - Jean II */
1578 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1579
1580 /* Hand this PDL to the card. */
1581 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1582
1583 lp->txrcommit++;
1584 spin_unlock_irqrestore(&lp->lock, flags);
1585
1586 /* Update statistics */
1587 lp->stats.tx_packets++;
1588 lp->stats.tx_bytes += skb->len;
1589 dev->trans_start = jiffies;
1590
1591 return NETDEV_TX_OK;
1592
1593 drop:
1594 dev_kfree_skb(skb);
1595 return NETDEV_TX_OK;
1596 }
1597
1598
1599 /* clean_txring checks if packets have been sent by the card by reading
1600 * the TX_PDL register from the performance page and comparing it to the
1601 * number of commited packets. It then frees the skb's of the packets that
1602 * obviously have been sent to the network.
1603 *
1604 * Needs the PERFORMANCE page selected.
1605 */
1606 static void hp100_clean_txring(struct net_device *dev)
1607 {
1608 struct hp100_private *lp = netdev_priv(dev);
1609 int ioaddr = dev->base_addr;
1610 int donecount;
1611
1612 #ifdef HP100_DEBUG_B
1613 hp100_outw(0x4211, TRACE);
1614 printk("hp100: %s: clean txring\n", dev->name);
1615 #endif
1616
1617 /* How many PDLs have been transmitted? */
1618 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1619
1620 #ifdef HP100_DEBUG
1621 if (donecount > MAX_TX_PDL)
1622 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1623 #endif
1624
1625 for (; 0 != donecount; donecount--) {
1626 #ifdef HP100_DEBUG_BM
1627 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1628 dev->name, (u_int) lp->txrhead->skb->data,
1629 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1630 #endif
1631 /* Conversion to new PCI API : NOP */
1632 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1633 dev_kfree_skb_any(lp->txrhead->skb);
1634 lp->txrhead->skb = (void *) NULL;
1635 lp->txrhead = lp->txrhead->next;
1636 lp->txrcommit--;
1637 }
1638 }
1639
1640 /* tx function for slave modes */
1641 static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
1642 struct net_device *dev)
1643 {
1644 unsigned long flags;
1645 int i, ok_flag;
1646 int ioaddr = dev->base_addr;
1647 u_short val;
1648 struct hp100_private *lp = netdev_priv(dev);
1649
1650 #ifdef HP100_DEBUG_B
1651 hp100_outw(0x4212, TRACE);
1652 printk("hp100: %s: start_xmit\n", dev->name);
1653 #endif
1654 if (skb->len <= 0)
1655 goto drop;
1656
1657 if (hp100_check_lan(dev))
1658 goto drop;
1659
1660 /* If there is not enough free memory on the card... */
1661 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1662 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1663 #ifdef HP100_DEBUG
1664 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1665 #endif
1666 /* not waited long enough since last failed tx try? */
1667 if (time_before(jiffies, dev->trans_start + HZ)) {
1668 #ifdef HP100_DEBUG
1669 printk("hp100: %s: trans_start timing problem\n",
1670 dev->name);
1671 #endif
1672 goto drop;
1673 }
1674 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1675 /* we have a 100Mb/s adapter but it isn't connected to hub */
1676 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1677 hp100_stop_interface(dev);
1678 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1679 hp100_start_interface(dev);
1680 } else {
1681 spin_lock_irqsave(&lp->lock, flags);
1682 hp100_ints_off(); /* Useful ? Jean II */
1683 i = hp100_sense_lan(dev);
1684 hp100_ints_on();
1685 spin_unlock_irqrestore(&lp->lock, flags);
1686 if (i == HP100_LAN_ERR)
1687 printk("hp100: %s: link down detected\n", dev->name);
1688 else if (lp->lan_type != i) { /* cable change! */
1689 /* it's very hard - all network setting must be changed!!! */
1690 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1691 lp->lan_type = i;
1692 hp100_stop_interface(dev);
1693 if (lp->lan_type == HP100_LAN_100)
1694 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1695 hp100_start_interface(dev);
1696 } else {
1697 printk("hp100: %s: interface reset\n", dev->name);
1698 hp100_stop_interface(dev);
1699 if (lp->lan_type == HP100_LAN_100)
1700 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1701 hp100_start_interface(dev);
1702 mdelay(1);
1703 }
1704 }
1705 dev->trans_start = jiffies;
1706 goto drop;
1707 }
1708
1709 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1710 #ifdef HP100_DEBUG_TX
1711 printk("hp100: %s: start_xmit: busy\n", dev->name);
1712 #endif
1713 }
1714
1715 spin_lock_irqsave(&lp->lock, flags);
1716 hp100_ints_off();
1717 val = hp100_inw(IRQ_STATUS);
1718 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1719 * when the current packet being transmitted on the wire is completed. */
1720 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1721 #ifdef HP100_DEBUG_TX
1722 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1723 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1724 #endif
1725
1726 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1727 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1728
1729 hp100_outw(i, DATA32); /* tell card the total packet length */
1730 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1731
1732 if (lp->mode == 2) { /* memory mapped */
1733 /* Note: The J2585B needs alignment to 32bits here! */
1734 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1735 if (!ok_flag)
1736 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1737 } else { /* programmed i/o */
1738 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1739 (skb->len + 3) >> 2);
1740 if (!ok_flag)
1741 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1742 hp100_outl(0, DATA32);
1743 }
1744
1745 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1746
1747 lp->stats.tx_packets++;
1748 lp->stats.tx_bytes += skb->len;
1749 dev->trans_start = jiffies;
1750 hp100_ints_on();
1751 spin_unlock_irqrestore(&lp->lock, flags);
1752
1753 dev_kfree_skb_any(skb);
1754
1755 #ifdef HP100_DEBUG_TX
1756 printk("hp100: %s: start_xmit: end\n", dev->name);
1757 #endif
1758
1759 return NETDEV_TX_OK;
1760
1761 drop:
1762 dev_kfree_skb(skb);
1763 return NETDEV_TX_OK;
1764
1765 }
1766
1767
1768 /*
1769 * Receive Function (Non-Busmaster mode)
1770 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1771 * packet counter is non-zero.
1772 * For non-busmaster, this function does the whole work of transfering
1773 * the packet to the host memory and then up to higher layers via skb
1774 * and netif_rx.
1775 */
1776
1777 static void hp100_rx(struct net_device *dev)
1778 {
1779 int packets, pkt_len;
1780 int ioaddr = dev->base_addr;
1781 struct hp100_private *lp = netdev_priv(dev);
1782 u_int header;
1783 struct sk_buff *skb;
1784
1785 #ifdef DEBUG_B
1786 hp100_outw(0x4213, TRACE);
1787 printk("hp100: %s: rx\n", dev->name);
1788 #endif
1789
1790 /* First get indication of received lan packet */
1791 /* RX_PKT_CND indicates the number of packets which have been fully */
1792 /* received onto the card but have not been fully transferred of the card */
1793 packets = hp100_inb(RX_PKT_CNT);
1794 #ifdef HP100_DEBUG_RX
1795 if (packets > 1)
1796 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1797 #endif
1798
1799 while (packets-- > 0) {
1800 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1801 /* really advanced to the next packet. */
1802 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1803 #ifdef HP100_DEBUG_RX
1804 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1805 #endif
1806 }
1807
1808 /* First we get the header, which contains information about the */
1809 /* actual length of the received packet. */
1810 if (lp->mode == 2) { /* memory mapped mode */
1811 header = readl(lp->mem_ptr_virt);
1812 } else /* programmed i/o */
1813 header = hp100_inl(DATA32);
1814
1815 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1816
1817 #ifdef HP100_DEBUG_RX
1818 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1819 dev->name, header & HP100_PKT_LEN_MASK,
1820 (header >> 16) & 0xfff8, (header >> 16) & 7);
1821 #endif
1822
1823 /* Now we allocate the skb and transfer the data into it. */
1824 skb = dev_alloc_skb(pkt_len+2);
1825 if (skb == NULL) { /* Not enough memory->drop packet */
1826 #ifdef HP100_DEBUG
1827 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1828 dev->name, pkt_len);
1829 #endif
1830 lp->stats.rx_dropped++;
1831 } else { /* skb successfully allocated */
1832
1833 u_char *ptr;
1834
1835 skb_reserve(skb,2);
1836
1837 /* ptr to start of the sk_buff data area */
1838 skb_put(skb, pkt_len);
1839 ptr = skb->data;
1840
1841 /* Now transfer the data from the card into that area */
1842 if (lp->mode == 2)
1843 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1844 else /* io mapped */
1845 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1846
1847 skb->protocol = eth_type_trans(skb, dev);
1848
1849 #ifdef HP100_DEBUG_RX
1850 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1851 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1852 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1853 ptr[9], ptr[10], ptr[11]);
1854 #endif
1855 netif_rx(skb);
1856 lp->stats.rx_packets++;
1857 lp->stats.rx_bytes += pkt_len;
1858 }
1859
1860 /* Indicate the card that we have got the packet */
1861 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1862
1863 switch (header & 0x00070000) {
1864 case (HP100_MULTI_ADDR_HASH << 16):
1865 case (HP100_MULTI_ADDR_NO_HASH << 16):
1866 lp->stats.multicast++;
1867 break;
1868 }
1869 } /* end of while(there are packets) loop */
1870 #ifdef HP100_DEBUG_RX
1871 printk("hp100_rx: %s: end\n", dev->name);
1872 #endif
1873 }
1874
1875 /*
1876 * Receive Function for Busmaster Mode
1877 */
1878 static void hp100_rx_bm(struct net_device *dev)
1879 {
1880 int ioaddr = dev->base_addr;
1881 struct hp100_private *lp = netdev_priv(dev);
1882 hp100_ring_t *ptr;
1883 u_int header;
1884 int pkt_len;
1885
1886 #ifdef HP100_DEBUG_B
1887 hp100_outw(0x4214, TRACE);
1888 printk("hp100: %s: rx_bm\n", dev->name);
1889 #endif
1890
1891 #ifdef HP100_DEBUG
1892 if (0 == lp->rxrcommit) {
1893 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1894 return;
1895 } else
1896 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1897 * the cards BM engine */
1898 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1899 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1900 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1901 lp->rxrcommit);
1902 return;
1903 }
1904 #endif
1905
1906 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1907 /*
1908 * The packet was received into the pdl pointed to by lp->rxrhead (
1909 * the oldest pdl in the ring
1910 */
1911
1912 /* First we get the header, which contains information about the */
1913 /* actual length of the received packet. */
1914
1915 ptr = lp->rxrhead;
1916
1917 header = *(ptr->pdl - 1);
1918 pkt_len = (header & HP100_PKT_LEN_MASK);
1919
1920 /* Conversion to new PCI API : NOP */
1921 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1922
1923 #ifdef HP100_DEBUG_BM
1924 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1925 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1926 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1927 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",
1928 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1929 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1930 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1931 #endif
1932
1933 if ((pkt_len >= MIN_ETHER_SIZE) &&
1934 (pkt_len <= MAX_ETHER_SIZE)) {
1935 if (ptr->skb == NULL) {
1936 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1937 /* can happen if we only allocated room for the pdh due to memory shortage. */
1938 lp->stats.rx_dropped++;
1939 } else {
1940 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1941 ptr->skb->protocol =
1942 eth_type_trans(ptr->skb, dev);
1943
1944 netif_rx(ptr->skb); /* Up and away... */
1945
1946 lp->stats.rx_packets++;
1947 lp->stats.rx_bytes += pkt_len;
1948 }
1949
1950 switch (header & 0x00070000) {
1951 case (HP100_MULTI_ADDR_HASH << 16):
1952 case (HP100_MULTI_ADDR_NO_HASH << 16):
1953 lp->stats.multicast++;
1954 break;
1955 }
1956 } else {
1957 #ifdef HP100_DEBUG
1958 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1959 #endif
1960 if (ptr->skb != NULL)
1961 dev_kfree_skb_any(ptr->skb);
1962 lp->stats.rx_errors++;
1963 }
1964
1965 lp->rxrhead = lp->rxrhead->next;
1966
1967 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1968 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1969 /* No space for skb, header can still be received. */
1970 #ifdef HP100_DEBUG
1971 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1972 #endif
1973 return;
1974 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1975 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1976 lp->rxrtail = lp->rxrtail->next;
1977 }
1978
1979 }
1980 }
1981
1982 /*
1983 * statistics
1984 */
1985 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1986 {
1987 unsigned long flags;
1988 int ioaddr = dev->base_addr;
1989 struct hp100_private *lp = netdev_priv(dev);
1990
1991 #ifdef HP100_DEBUG_B
1992 hp100_outw(0x4215, TRACE);
1993 #endif
1994
1995 spin_lock_irqsave(&lp->lock, flags);
1996 hp100_ints_off(); /* Useful ? Jean II */
1997 hp100_update_stats(dev);
1998 hp100_ints_on();
1999 spin_unlock_irqrestore(&lp->lock, flags);
2000 return &(lp->stats);
2001 }
2002
2003 static void hp100_update_stats(struct net_device *dev)
2004 {
2005 int ioaddr = dev->base_addr;
2006 u_short val;
2007 struct hp100_private *lp = netdev_priv(dev);
2008
2009 #ifdef HP100_DEBUG_B
2010 hp100_outw(0x4216, TRACE);
2011 printk("hp100: %s: update-stats\n", dev->name);
2012 #endif
2013
2014 /* Note: Statistics counters clear when read. */
2015 hp100_page(MAC_CTRL);
2016 val = hp100_inw(DROPPED) & 0x0fff;
2017 lp->stats.rx_errors += val;
2018 lp->stats.rx_over_errors += val;
2019 val = hp100_inb(CRC);
2020 lp->stats.rx_errors += val;
2021 lp->stats.rx_crc_errors += val;
2022 val = hp100_inb(ABORT);
2023 lp->stats.tx_errors += val;
2024 lp->stats.tx_aborted_errors += val;
2025 hp100_page(PERFORMANCE);
2026 }
2027
2028 static void hp100_misc_interrupt(struct net_device *dev)
2029 {
2030 #ifdef HP100_DEBUG_B
2031 int ioaddr = dev->base_addr;
2032 #endif
2033 struct hp100_private *lp = netdev_priv(dev);
2034
2035 #ifdef HP100_DEBUG_B
2036 int ioaddr = dev->base_addr;
2037 hp100_outw(0x4216, TRACE);
2038 printk("hp100: %s: misc_interrupt\n", dev->name);
2039 #endif
2040
2041 /* Note: Statistics counters clear when read. */
2042 lp->stats.rx_errors++;
2043 lp->stats.tx_errors++;
2044 }
2045
2046 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2047 {
2048 unsigned long flags;
2049
2050 #ifdef HP100_DEBUG_B
2051 hp100_outw(0x4217, TRACE);
2052 printk("hp100: %s: clear_stats\n", dev->name);
2053 #endif
2054
2055 spin_lock_irqsave(&lp->lock, flags);
2056 hp100_page(MAC_CTRL); /* get all statistics bytes */
2057 hp100_inw(DROPPED);
2058 hp100_inb(CRC);
2059 hp100_inb(ABORT);
2060 hp100_page(PERFORMANCE);
2061 spin_unlock_irqrestore(&lp->lock, flags);
2062 }
2063
2064
2065 /*
2066 * multicast setup
2067 */
2068
2069 /*
2070 * Set or clear the multicast filter for this adapter.
2071 */
2072
2073 static void hp100_set_multicast_list(struct net_device *dev)
2074 {
2075 unsigned long flags;
2076 int ioaddr = dev->base_addr;
2077 struct hp100_private *lp = netdev_priv(dev);
2078
2079 #ifdef HP100_DEBUG_B
2080 hp100_outw(0x4218, TRACE);
2081 printk("hp100: %s: set_mc_list\n", dev->name);
2082 #endif
2083
2084 spin_lock_irqsave(&lp->lock, flags);
2085 hp100_ints_off();
2086 hp100_page(MAC_CTRL);
2087 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2088
2089 if (dev->flags & IFF_PROMISC) {
2090 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2091 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2092 memset(&lp->hash_bytes, 0xff, 8);
2093 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2094 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2095 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2096 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2097 if (dev->flags & IFF_ALLMULTI) {
2098 /* set hash filter to receive all multicast packets */
2099 memset(&lp->hash_bytes, 0xff, 8);
2100 } else {
2101 int i, j, idx;
2102 u_char *addrs;
2103 struct dev_mc_list *dmi;
2104
2105 memset(&lp->hash_bytes, 0x00, 8);
2106 #ifdef HP100_DEBUG
2107 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2108 #endif
2109 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2110 addrs = dmi->dmi_addr;
2111 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2112 #ifdef HP100_DEBUG
2113 printk("hp100: %s: multicast = %pM, ",
2114 dev->name, addrs);
2115 #endif
2116 for (j = idx = 0; j < 6; j++) {
2117 idx ^= *addrs++ & 0x3f;
2118 printk(":%02x:", idx);
2119 }
2120 #ifdef HP100_DEBUG
2121 printk("idx = %i\n", idx);
2122 #endif
2123 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2124 }
2125 }
2126 }
2127 #else
2128 memset(&lp->hash_bytes, 0xff, 8);
2129 #endif
2130 } else {
2131 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2132 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2133 memset(&lp->hash_bytes, 0x00, 8);
2134 }
2135
2136 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2137 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2138 int i;
2139
2140 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2141 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2142 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2143
2144 hp100_page(MAC_ADDRESS);
2145 for (i = 0; i < 8; i++)
2146 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2147 #ifdef HP100_DEBUG
2148 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2149 dev->name, lp->mac1_mode, lp->mac2_mode,
2150 lp->hash_bytes[0], lp->hash_bytes[1],
2151 lp->hash_bytes[2], lp->hash_bytes[3],
2152 lp->hash_bytes[4], lp->hash_bytes[5],
2153 lp->hash_bytes[6], lp->hash_bytes[7]);
2154 #endif
2155
2156 if (lp->lan_type == HP100_LAN_100) {
2157 #ifdef HP100_DEBUG
2158 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2159 #endif
2160 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2161 }
2162 } else {
2163 int i;
2164 u_char old_hash_bytes[8];
2165
2166 hp100_page(MAC_ADDRESS);
2167 for (i = 0; i < 8; i++)
2168 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2169 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2170 for (i = 0; i < 8; i++)
2171 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2172 #ifdef HP100_DEBUG
2173 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2174 dev->name, lp->hash_bytes[0],
2175 lp->hash_bytes[1], lp->hash_bytes[2],
2176 lp->hash_bytes[3], lp->hash_bytes[4],
2177 lp->hash_bytes[5], lp->hash_bytes[6],
2178 lp->hash_bytes[7]);
2179 #endif
2180
2181 if (lp->lan_type == HP100_LAN_100) {
2182 #ifdef HP100_DEBUG
2183 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2184 #endif
2185 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2186 }
2187 }
2188 }
2189
2190 hp100_page(MAC_CTRL);
2191 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2192 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2193
2194 hp100_page(PERFORMANCE);
2195 hp100_ints_on();
2196 spin_unlock_irqrestore(&lp->lock, flags);
2197 }
2198
2199 /*
2200 * hardware interrupt handling
2201 */
2202
2203 static irqreturn_t hp100_interrupt(int irq, void *dev_id)
2204 {
2205 struct net_device *dev = (struct net_device *) dev_id;
2206 struct hp100_private *lp = netdev_priv(dev);
2207
2208 int ioaddr;
2209 u_int val;
2210
2211 if (dev == NULL)
2212 return IRQ_NONE;
2213 ioaddr = dev->base_addr;
2214
2215 spin_lock(&lp->lock);
2216
2217 hp100_ints_off();
2218
2219 #ifdef HP100_DEBUG_B
2220 hp100_outw(0x4219, TRACE);
2221 #endif
2222
2223 /* hp100_page( PERFORMANCE ); */
2224 val = hp100_inw(IRQ_STATUS);
2225 #ifdef HP100_DEBUG_IRQ
2226 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2227 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2228 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2229 #endif
2230
2231 if (val == 0) { /* might be a shared interrupt */
2232 spin_unlock(&lp->lock);
2233 hp100_ints_on();
2234 return IRQ_NONE;
2235 }
2236 /* We're only interested in those interrupts we really enabled. */
2237 /* val &= hp100_inw( IRQ_MASK ); */
2238
2239 /*
2240 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2241 * is considered executed whenever the RX_PDL data structure is no longer
2242 * needed.
2243 */
2244 if (val & HP100_RX_PDL_FILL_COMPL) {
2245 if (lp->mode == 1)
2246 hp100_rx_bm(dev);
2247 else {
2248 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2249 }
2250 }
2251
2252 /*
2253 * The RX_PACKET interrupt is set, when the receive packet counter is
2254 * non zero. We use this interrupt for receiving in slave mode. In
2255 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2256 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2257 * we somehow have missed a rx_pdl_fill_compl interrupt.
2258 */
2259
2260 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2261 if (lp->mode != 1) /* non busmaster */
2262 hp100_rx(dev);
2263 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2264 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2265 hp100_rx_bm(dev);
2266 }
2267 }
2268
2269 /*
2270 * Ack. that we have noticed the interrupt and thereby allow next one.
2271 * Note that this is now done after the slave rx function, since first
2272 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2273 * on the J2573.
2274 */
2275 hp100_outw(val, IRQ_STATUS);
2276
2277 /*
2278 * RX_ERROR is set when a packet is dropped due to no memory resources on
2279 * the card or when a RCV_ERR occurs.
2280 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2281 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2282 */
2283 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2284 #ifdef HP100_DEBUG_IRQ
2285 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2286 #endif
2287 hp100_update_stats(dev);
2288 if (lp->mode == 1) {
2289 hp100_rxfill(dev);
2290 hp100_clean_txring(dev);
2291 }
2292 }
2293
2294 /*
2295 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2296 */
2297 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2298 hp100_rxfill(dev);
2299
2300 /*
2301 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2302 * is completed
2303 */
2304 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2305 hp100_clean_txring(dev);
2306
2307 /*
2308 * MISC_ERROR is set when either the LAN link goes down or a detected
2309 * bus error occurs.
2310 */
2311 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2312 #ifdef HP100_DEBUG_IRQ
2313 printk
2314 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2315 dev->name);
2316 #endif
2317 if (lp->mode == 1) {
2318 hp100_clean_txring(dev);
2319 hp100_rxfill(dev);
2320 }
2321 hp100_misc_interrupt(dev);
2322 }
2323
2324 spin_unlock(&lp->lock);
2325 hp100_ints_on();
2326 return IRQ_HANDLED;
2327 }
2328
2329 /*
2330 * some misc functions
2331 */
2332
2333 static void hp100_start_interface(struct net_device *dev)
2334 {
2335 unsigned long flags;
2336 int ioaddr = dev->base_addr;
2337 struct hp100_private *lp = netdev_priv(dev);
2338
2339 #ifdef HP100_DEBUG_B
2340 hp100_outw(0x4220, TRACE);
2341 printk("hp100: %s: hp100_start_interface\n", dev->name);
2342 #endif
2343
2344 spin_lock_irqsave(&lp->lock, flags);
2345
2346 /* Ensure the adapter does not want to request an interrupt when */
2347 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2348 hp100_page(PERFORMANCE);
2349 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2350 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2351 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2352 OPTION_LSW);
2353 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2354 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2355
2356 if (lp->mode == 1) {
2357 /* Make sure BM bit is set... */
2358 hp100_page(HW_MAP);
2359 hp100_orb(HP100_BM_MASTER, BM);
2360 hp100_rxfill(dev);
2361 } else if (lp->mode == 2) {
2362 /* Enable memory mapping. Note: Don't do this when busmaster. */
2363 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2364 }
2365
2366 hp100_page(PERFORMANCE);
2367 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2368 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2369
2370 /* enable a few interrupts: */
2371 if (lp->mode == 1) { /* busmaster mode */
2372 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2373 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2374 /* HP100_RX_PACKET | */
2375 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2376 /* HP100_TX_PDA_ZERO | */
2377 HP100_TX_COMPLETE |
2378 /* HP100_MISC_ERROR | */
2379 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2380 } else {
2381 hp100_outw(HP100_RX_PACKET |
2382 HP100_RX_ERROR | HP100_SET_HB |
2383 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2384 }
2385
2386 /* Note : before hp100_set_multicast_list(), because it will play with
2387 * spinlock itself... Jean II */
2388 spin_unlock_irqrestore(&lp->lock, flags);
2389
2390 /* Enable MAC Tx and RX, set MAC modes, ... */
2391 hp100_set_multicast_list(dev);
2392 }
2393
2394 static void hp100_stop_interface(struct net_device *dev)
2395 {
2396 struct hp100_private *lp = netdev_priv(dev);
2397 int ioaddr = dev->base_addr;
2398 u_int val;
2399
2400 #ifdef HP100_DEBUG_B
2401 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2402 hp100_outw(0x4221, TRACE);
2403 #endif
2404
2405 if (lp->mode == 1)
2406 hp100_BM_shutdown(dev);
2407 else {
2408 /* Note: MMAP_DIS will be reenabled by start_interface */
2409 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2410 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2411 OPTION_LSW);
2412 val = hp100_inw(OPTION_LSW);
2413
2414 hp100_page(MAC_CTRL);
2415 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2416
2417 if (!(val & HP100_HW_RST))
2418 return; /* If reset, imm. return ... */
2419 /* ... else: busy wait until idle */
2420 for (val = 0; val < 6000; val++)
2421 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2422 hp100_page(PERFORMANCE);
2423 return;
2424 }
2425 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2426 hp100_page(PERFORMANCE);
2427 }
2428 }
2429
2430 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2431 {
2432 int i;
2433 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2434
2435 #ifdef HP100_DEBUG_B
2436 hp100_outw(0x4222, TRACE);
2437 #endif
2438
2439 hp100_page(EEPROM_CTRL);
2440 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2441 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2442 for (i = 0; i < 10000; i++)
2443 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2444 return;
2445 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2446 }
2447
2448 /* Sense connection status.
2449 * return values: LAN_10 - Connected to 10Mbit/s network
2450 * LAN_100 - Connected to 100Mbit/s network
2451 * LAN_ERR - not connected or 100Mbit/s Hub down
2452 */
2453 static int hp100_sense_lan(struct net_device *dev)
2454 {
2455 int ioaddr = dev->base_addr;
2456 u_short val_VG, val_10;
2457 struct hp100_private *lp = netdev_priv(dev);
2458
2459 #ifdef HP100_DEBUG_B
2460 hp100_outw(0x4223, TRACE);
2461 #endif
2462
2463 hp100_page(MAC_CTRL);
2464 val_10 = hp100_inb(10_LAN_CFG_1);
2465 val_VG = hp100_inb(VG_LAN_CFG_1);
2466 hp100_page(PERFORMANCE);
2467 #ifdef HP100_DEBUG
2468 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2469 dev->name, val_VG, val_10);
2470 #endif
2471
2472 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2473 return HP100_LAN_10;
2474
2475 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2476 /*
2477 * This can be overriden by dos utility, so if this has no effect,
2478 * perhaps you need to download that utility from HP and set card
2479 * back to "auto detect".
2480 */
2481 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2482 hp100_page(MAC_CTRL);
2483 hp100_outb(val_10, 10_LAN_CFG_1);
2484 hp100_page(PERFORMANCE);
2485 return HP100_LAN_COAX;
2486 }
2487
2488 /* Those cards don't have a 100 Mbit connector */
2489 if ( !strcmp(lp->id, "HWP1920") ||
2490 (lp->pci_dev &&
2491 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2492 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2493 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2494 return HP100_LAN_ERR;
2495
2496 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2497 return HP100_LAN_100;
2498 return HP100_LAN_ERR;
2499 }
2500
2501 static int hp100_down_vg_link(struct net_device *dev)
2502 {
2503 struct hp100_private *lp = netdev_priv(dev);
2504 int ioaddr = dev->base_addr;
2505 unsigned long time;
2506 long savelan, newlan;
2507
2508 #ifdef HP100_DEBUG_B
2509 hp100_outw(0x4224, TRACE);
2510 printk("hp100: %s: down_vg_link\n", dev->name);
2511 #endif
2512
2513 hp100_page(MAC_CTRL);
2514 time = jiffies + (HZ / 4);
2515 do {
2516 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2517 break;
2518 if (!in_interrupt())
2519 schedule_timeout_interruptible(1);
2520 } while (time_after(time, jiffies));
2521
2522 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2523 return 0;
2524
2525 /* Drop the VG Link by clearing the link up cmd and load addr. */
2526
2527 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2528 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2529
2530 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2531 time = jiffies + (HZ / 2);
2532 do {
2533 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2534 break;
2535 if (!in_interrupt())
2536 schedule_timeout_interruptible(1);
2537 } while (time_after(time, jiffies));
2538
2539 #ifdef HP100_DEBUG
2540 if (time_after_eq(jiffies, time))
2541 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2542 #endif
2543
2544 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2545 /* logout under traffic (even though all the status bits are cleared), */
2546 /* do this workaround to get the Rev 1 MAC in its idle state */
2547 if (lp->chip == HP100_CHIPID_LASSEN) {
2548 /* Reset VG MAC to insure it leaves the logoff state even if */
2549 /* the Hub is still emitting tones */
2550 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2551 udelay(1500); /* wait for >1ms */
2552 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2553 udelay(1500);
2554 }
2555
2556 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2557 /* to get the VG mac to full reset. This is not req.d with later chips */
2558 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2559 /* selected again! This will be left to the connect hub function to */
2560 /* perform if desired. */
2561 if (lp->chip == HP100_CHIPID_LASSEN) {
2562 /* Have to write to 10 and 100VG control registers simultaneously */
2563 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2564 newlan &= ~(HP100_VG_SEL << 16);
2565 newlan |= (HP100_DOT3_MAC) << 8;
2566 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2567 hp100_outl(newlan, 10_LAN_CFG_1);
2568
2569 /* Conditionally stall for 5sec on VG selected. */
2570 time = jiffies + (HZ * 5);
2571 do {
2572 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2573 break;
2574 if (!in_interrupt())
2575 schedule_timeout_interruptible(1);
2576 } while (time_after(time, jiffies));
2577
2578 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2579 hp100_outl(savelan, 10_LAN_CFG_1);
2580 }
2581
2582 time = jiffies + (3 * HZ); /* Timeout 3s */
2583 do {
2584 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2585 break;
2586 if (!in_interrupt())
2587 schedule_timeout_interruptible(1);
2588 } while (time_after(time, jiffies));
2589
2590 if (time_before_eq(time, jiffies)) {
2591 #ifdef HP100_DEBUG
2592 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2593 #endif
2594 return -EIO;
2595 }
2596
2597 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2598 do {
2599 if (!in_interrupt())
2600 schedule_timeout_interruptible(1);
2601 } while (time_after(time, jiffies));
2602
2603 return 0;
2604 }
2605
2606 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2607 {
2608 int ioaddr = dev->base_addr;
2609 struct hp100_private *lp = netdev_priv(dev);
2610 u_short val = 0;
2611 unsigned long time;
2612 int startst;
2613
2614 #ifdef HP100_DEBUG_B
2615 hp100_outw(0x4225, TRACE);
2616 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2617 #endif
2618
2619 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2620 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2621 * promiscuous mode change)
2622 */
2623 hp100_page(MAC_CTRL);
2624 startst = hp100_inb(VG_LAN_CFG_1);
2625 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2626 #ifdef HP100_DEBUG_TRAINING
2627 printk("hp100: %s: Start training\n", dev->name);
2628 #endif
2629
2630 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2631 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2632
2633 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2634 /* entry then temporarily put them into force 100Mbit mode */
2635 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2636 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2637
2638 /* Drop the VG link by zeroing Link Up Command and Load Address */
2639 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2640
2641 #ifdef HP100_DEBUG_TRAINING
2642 printk("hp100: %s: Bring down the link\n", dev->name);
2643 #endif
2644
2645 /* Wait for link to drop */
2646 time = jiffies + (HZ / 10);
2647 do {
2648 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2649 break;
2650 if (!in_interrupt())
2651 schedule_timeout_interruptible(1);
2652 } while (time_after(time, jiffies));
2653
2654 /* Start an addressed training and optionally request promiscuous port */
2655 if ((dev->flags) & IFF_PROMISC) {
2656 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2657 if (lp->chip == HP100_CHIPID_LASSEN)
2658 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2659 } else {
2660 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2661 /* For ETR parts we need to reset the prom. bit in the training
2662 * register, otherwise promiscious mode won't be disabled.
2663 */
2664 if (lp->chip == HP100_CHIPID_LASSEN) {
2665 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2666 }
2667 }
2668
2669 /* With ETR parts, frame format request bits can be set. */
2670 if (lp->chip == HP100_CHIPID_LASSEN)
2671 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2672
2673 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2674
2675 /* Note: Next wait could be omitted for Hood and earlier chips under */
2676 /* certain circumstances */
2677 /* TODO: check if hood/earlier and skip wait. */
2678
2679 /* Wait for either short timeout for VG tones or long for login */
2680 /* Wait for the card hardware to signalise link cable status ok... */
2681 hp100_page(MAC_CTRL);
2682 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2683 do {
2684 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2685 break;
2686 if (!in_interrupt())
2687 schedule_timeout_interruptible(1);
2688 } while (time_before(jiffies, time));
2689
2690 if (time_after_eq(jiffies, time)) {
2691 #ifdef HP100_DEBUG_TRAINING
2692 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2693 #endif
2694 } else {
2695 #ifdef HP100_DEBUG_TRAINING
2696 printk
2697 ("hp100: %s: HUB tones detected. Trying to train.\n",
2698 dev->name);
2699 #endif
2700
2701 time = jiffies + (2 * HZ); /* again a timeout */
2702 do {
2703 val = hp100_inb(VG_LAN_CFG_1);
2704 if ((val & (HP100_LINK_UP_ST))) {
2705 #ifdef HP100_DEBUG_TRAINING
2706 printk("hp100: %s: Passed training.\n", dev->name);
2707 #endif
2708 break;
2709 }
2710 if (!in_interrupt())
2711 schedule_timeout_interruptible(1);
2712 } while (time_after(time, jiffies));
2713 }
2714
2715 /* If LINK_UP_ST is set, then we are logged into the hub. */
2716 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2717 #ifdef HP100_DEBUG_TRAINING
2718 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2719 if (lp->chip == HP100_CHIPID_LASSEN) {
2720 val = hp100_inw(TRAIN_ALLOW);
2721 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2722 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2723 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2724 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2725 }
2726 #endif
2727 } else {
2728 /* If LINK_UP_ST is not set, login was not successful */
2729 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2730 if (lp->chip == HP100_CHIPID_LASSEN) {
2731 /* Check allowed Register to find out why there is a problem. */
2732 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2733 #ifdef HP100_DEBUG_TRAINING
2734 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2735 #endif
2736 if (val & HP100_MALLOW_ACCDENIED)
2737 printk("hp100: %s: HUB access denied.\n", dev->name);
2738 if (val & HP100_MALLOW_CONFIGURE)
2739 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2740 if (val & HP100_MALLOW_DUPADDR)
2741 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2742 }
2743 }
2744
2745 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2746 /* to auto-select mode */
2747
2748 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2749 hp100_page(MAC_CTRL);
2750 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2751 }
2752
2753 val = hp100_inb(VG_LAN_CFG_1);
2754
2755 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2756 hp100_page(PERFORMANCE);
2757 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2758
2759 if (val & HP100_LINK_UP_ST)
2760 return (0); /* login was ok */
2761 else {
2762 printk("hp100: %s: Training failed.\n", dev->name);
2763 hp100_down_vg_link(dev);
2764 return -EIO;
2765 }
2766 }
2767 /* no forced relogin & already link there->no training. */
2768 return -EIO;
2769 }
2770
2771 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2772 {
2773 int ioaddr = dev->base_addr;
2774 struct hp100_private *lp = netdev_priv(dev);
2775
2776 #ifdef HP100_DEBUG_B
2777 hp100_outw(0x4226, TRACE);
2778 printk("hp100: %s: cascade_reset\n", dev->name);
2779 #endif
2780
2781 if (enable) {
2782 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2783 if (lp->chip == HP100_CHIPID_LASSEN) {
2784 /* Lassen requires a PCI transmit fifo reset */
2785 hp100_page(HW_MAP);
2786 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2787 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2788 /* Wait for min. 300 ns */
2789 /* we can't use jiffies here, because it may be */
2790 /* that we have disabled the timer... */
2791 udelay(400);
2792 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2793 hp100_page(PERFORMANCE);
2794 }
2795 } else { /* bring out of reset */
2796 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2797 udelay(400);
2798 hp100_page(PERFORMANCE);
2799 }
2800 }
2801
2802 #ifdef HP100_DEBUG
2803 void hp100_RegisterDump(struct net_device *dev)
2804 {
2805 int ioaddr = dev->base_addr;
2806 int Page;
2807 int Register;
2808
2809 /* Dump common registers */
2810 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2811 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2812 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2813 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2814 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2815
2816 /* Dump paged registers */
2817 for (Page = 0; Page < 8; Page++) {
2818 /* Dump registers */
2819 printk("page: 0x%.2x\n", Page);
2820 outw(Page, ioaddr + 0x02);
2821 for (Register = 0x8; Register < 0x22; Register += 2) {
2822 /* Display Register contents except data port */
2823 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2824 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2825 }
2826 }
2827 }
2828 hp100_page(PERFORMANCE);
2829 }
2830 #endif
2831
2832
2833 static void cleanup_dev(struct net_device *d)
2834 {
2835 struct hp100_private *p = netdev_priv(d);
2836
2837 unregister_netdev(d);
2838 release_region(d->base_addr, HP100_REGION_SIZE);
2839
2840 if (p->mode == 1) /* busmaster */
2841 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2842 p->page_vaddr_algn,
2843 virt_to_whatever(d, p->page_vaddr_algn));
2844 if (p->mem_ptr_virt)
2845 iounmap(p->mem_ptr_virt);
2846
2847 free_netdev(d);
2848 }
2849
2850 #ifdef CONFIG_EISA
2851 static int __init hp100_eisa_probe (struct device *gendev)
2852 {
2853 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2854 struct eisa_device *edev = to_eisa_device(gendev);
2855 int err;
2856
2857 if (!dev)
2858 return -ENOMEM;
2859
2860 SET_NETDEV_DEV(dev, &edev->dev);
2861
2862 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2863 if (err)
2864 goto out1;
2865
2866 #ifdef HP100_DEBUG
2867 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2868 dev->base_addr);
2869 #endif
2870 dev_set_drvdata(gendev, dev);
2871 return 0;
2872 out1:
2873 free_netdev(dev);
2874 return err;
2875 }
2876
2877 static int __devexit hp100_eisa_remove (struct device *gendev)
2878 {
2879 struct net_device *dev = dev_get_drvdata(gendev);
2880 cleanup_dev(dev);
2881 return 0;
2882 }
2883
2884 static struct eisa_driver hp100_eisa_driver = {
2885 .id_table = hp100_eisa_tbl,
2886 .driver = {
2887 .name = "hp100",
2888 .probe = hp100_eisa_probe,
2889 .remove = __devexit_p (hp100_eisa_remove),
2890 }
2891 };
2892 #endif
2893
2894 #ifdef CONFIG_PCI
2895 static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2896 const struct pci_device_id *ent)
2897 {
2898 struct net_device *dev;
2899 int ioaddr;
2900 u_short pci_command;
2901 int err;
2902
2903 if (pci_enable_device(pdev))
2904 return -ENODEV;
2905
2906 dev = alloc_etherdev(sizeof(struct hp100_private));
2907 if (!dev) {
2908 err = -ENOMEM;
2909 goto out0;
2910 }
2911
2912 SET_NETDEV_DEV(dev, &pdev->dev);
2913
2914 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2915 if (!(pci_command & PCI_COMMAND_IO)) {
2916 #ifdef HP100_DEBUG
2917 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2918 #endif
2919 pci_command |= PCI_COMMAND_IO;
2920 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2921 }
2922
2923 if (!(pci_command & PCI_COMMAND_MASTER)) {
2924 #ifdef HP100_DEBUG
2925 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2926 #endif
2927 pci_command |= PCI_COMMAND_MASTER;
2928 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2929 }
2930
2931 ioaddr = pci_resource_start(pdev, 0);
2932 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2933 if (err)
2934 goto out1;
2935
2936 #ifdef HP100_DEBUG
2937 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2938 #endif
2939 pci_set_drvdata(pdev, dev);
2940 return 0;
2941 out1:
2942 free_netdev(dev);
2943 out0:
2944 pci_disable_device(pdev);
2945 return err;
2946 }
2947
2948 static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2949 {
2950 struct net_device *dev = pci_get_drvdata(pdev);
2951
2952 cleanup_dev(dev);
2953 pci_disable_device(pdev);
2954 }
2955
2956
2957 static struct pci_driver hp100_pci_driver = {
2958 .name = "hp100",
2959 .id_table = hp100_pci_tbl,
2960 .probe = hp100_pci_probe,
2961 .remove = __devexit_p(hp100_pci_remove),
2962 };
2963 #endif
2964
2965 /*
2966 * module section
2967 */
2968
2969 MODULE_LICENSE("GPL");
2970 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, "
2971 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2972 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2973
2974 /*
2975 * Note: to register three isa devices, use:
2976 * option hp100 hp100_port=0,0,0
2977 * to register one card at io 0x280 as eth239, use:
2978 * option hp100 hp100_port=0x280
2979 */
2980 #if defined(MODULE) && defined(CONFIG_ISA)
2981 #define HP100_DEVICES 5
2982 /* Parameters set by insmod */
2983 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2984 module_param_array(hp100_port, int, NULL, 0);
2985
2986 /* List of devices */
2987 static struct net_device *hp100_devlist[HP100_DEVICES];
2988
2989 static int __init hp100_isa_init(void)
2990 {
2991 struct net_device *dev;
2992 int i, err, cards = 0;
2993
2994 /* Don't autoprobe ISA bus */
2995 if (hp100_port[0] == 0)
2996 return -ENODEV;
2997
2998 /* Loop on all possible base addresses */
2999 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
3000 dev = alloc_etherdev(sizeof(struct hp100_private));
3001 if (!dev) {
3002 printk(KERN_WARNING "hp100: no memory for network device\n");
3003 while (cards > 0)
3004 cleanup_dev(hp100_devlist[--cards]);
3005
3006 return -ENOMEM;
3007 }
3008
3009 err = hp100_isa_probe(dev, hp100_port[i]);
3010 if (!err)
3011 hp100_devlist[cards++] = dev;
3012 else
3013 free_netdev(dev);
3014 }
3015
3016 return cards > 0 ? 0 : -ENODEV;
3017 }
3018
3019 static void hp100_isa_cleanup(void)
3020 {
3021 int i;
3022
3023 for (i = 0; i < HP100_DEVICES; i++) {
3024 struct net_device *dev = hp100_devlist[i];
3025 if (dev)
3026 cleanup_dev(dev);
3027 }
3028 }
3029 #else
3030 #define hp100_isa_init() (0)
3031 #define hp100_isa_cleanup() do { } while(0)
3032 #endif
3033
3034 static int __init hp100_module_init(void)
3035 {
3036 int err;
3037
3038 err = hp100_isa_init();
3039 if (err && err != -ENODEV)
3040 goto out;
3041 #ifdef CONFIG_EISA
3042 err = eisa_driver_register(&hp100_eisa_driver);
3043 if (err && err != -ENODEV)
3044 goto out2;
3045 #endif
3046 #ifdef CONFIG_PCI
3047 err = pci_register_driver(&hp100_pci_driver);
3048 if (err && err != -ENODEV)
3049 goto out3;
3050 #endif
3051 out:
3052 return err;
3053 out3:
3054 #ifdef CONFIG_EISA
3055 eisa_driver_unregister (&hp100_eisa_driver);
3056 out2:
3057 #endif
3058 hp100_isa_cleanup();
3059 goto out;
3060 }
3061
3062
3063 static void __exit hp100_module_exit(void)
3064 {
3065 hp100_isa_cleanup();
3066 #ifdef CONFIG_EISA
3067 eisa_driver_unregister (&hp100_eisa_driver);
3068 #endif
3069 #ifdef CONFIG_PCI
3070 pci_unregister_driver (&hp100_pci_driver);
3071 #endif
3072 }
3073
3074 module_init(hp100_module_init)
3075 module_exit(hp100_module_exit)
Linux for Ginger Game Console