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[SPARC64]: Implement __raw_read_trylock()
[linux-2.6/suspend2-2.6.18.git] / drivers / net / hp100.c
blob55c7ed60839184829a9882b9480bf3203aeada46
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@suse.cz>
12 **
13 ** This driver has only been tested with
14 ** -- HP J2585B 10/100 Mbit/s PCI Busmaster
15 ** -- HP J2585A 10/100 Mbit/s PCI
16 ** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
17 ** -- HP J2973A 10 Mbit/s PCI 10base-T
18 ** -- HP J2573 10/100 ISA
19 ** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
20 ** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
21 **
22 ** but it should also work with the other CASCADE based adapters.
23 **
24 ** TODO:
25 ** - J2573 seems to hang sometimes when in shared memory mode.
26 ** - Mode for Priority TX
27 ** - Check PCI registers, performance might be improved?
28 ** - To reduce interrupt load in busmaster, one could switch off
29 ** the interrupts that are used to refill the queues whenever the
30 ** queues are filled up to more than a certain threshold.
31 ** - some updates for EISA version of card
32 **
33 **
34 ** This code is free software; you can redistribute it and/or modify
35 ** it under the terms of the GNU General Public License as published by
36 ** the Free Software Foundation; either version 2 of the License, or
37 ** (at your option) any later version.
38 **
39 ** This code is distributed in the hope that it will be useful,
40 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
41 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42 ** GNU General Public License for more details.
43 **
44 ** You should have received a copy of the GNU General Public License
45 ** along with this program; if not, write to the Free Software
46 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
47 **
48 ** 1.57c -> 1.58
49 ** - used indent to change coding-style
50 ** - added KTI DP-200 EISA ID
51 ** - ioremap is also used for low (<1MB) memory (multi-architecture support)
52 **
53 ** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
54 ** - release resources on failure in init_module
55 **
56 ** 1.57 -> 1.57b - Jean II
57 ** - fix spinlocks, SMP is now working !
58 **
59 ** 1.56 -> 1.57
60 ** - updates for new PCI interface for 2.1 kernels
61 **
62 ** 1.55 -> 1.56
63 ** - removed printk in misc. interrupt and update statistics to allow
64 ** monitoring of card status
65 ** - timing changes in xmit routines, relogin to 100VG hub added when
66 ** driver does reset
67 ** - included fix for Compex FreedomLine PCI adapter
68 **
69 ** 1.54 -> 1.55
70 ** - fixed bad initialization in init_module
71 ** - added Compex FreedomLine adapter
72 ** - some fixes in card initialization
73 **
74 ** 1.53 -> 1.54
75 ** - added hardware multicast filter support (doesn't work)
76 ** - little changes in hp100_sense_lan routine
77 ** - added support for Coax and AUI (J2970)
78 ** - fix for multiple cards and hp100_mode parameter (insmod)
79 ** - fix for shared IRQ
80 **
81 ** 1.52 -> 1.53
82 ** - fixed bug in multicast support
83 **
84 */
85
86 #define HP100_DEFAULT_PRIORITY_TX 0
87
88 #undef HP100_DEBUG
89 #undef HP100_DEBUG_B /* Trace */
90 #undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
91
92 #undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
93 #undef HP100_DEBUG_TX
94 #undef HP100_DEBUG_IRQ
95 #undef HP100_DEBUG_RX
96
97 #undef HP100_MULTICAST_FILTER /* Need to be debugged... */
98
99 #include <linux/module.h>
100 #include <linux/kernel.h>
101 #include <linux/string.h>
102 #include <linux/errno.h>
103 #include <linux/ioport.h>
104 #include <linux/slab.h>
105 #include <linux/interrupt.h>
106 #include <linux/eisa.h>
107 #include <linux/pci.h>
108 #include <linux/dma-mapping.h>
109 #include <linux/spinlock.h>
110 #include <linux/netdevice.h>
111 #include <linux/etherdevice.h>
112 #include <linux/skbuff.h>
113 #include <linux/types.h>
114 #include <linux/config.h> /* for CONFIG_PCI */
115 #include <linux/delay.h>
116 #include <linux/init.h>
117 #include <linux/bitops.h>
118
119 #include <asm/io.h>
120
121 #include "hp100.h"
122
123 /*
124 * defines
125 */
126
127 #define HP100_BUS_ISA 0
128 #define HP100_BUS_EISA 1
129 #define HP100_BUS_PCI 2
130
131 #define HP100_REGION_SIZE 0x20 /* for ioports */
132 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
133
134 #define HP100_MAX_PACKET_SIZE (1536+4)
135 #define HP100_MIN_PACKET_SIZE 60
136
137 #ifndef HP100_DEFAULT_RX_RATIO
138 /* default - 75% onboard memory on the card are used for RX packets */
139 #define HP100_DEFAULT_RX_RATIO 75
140 #endif
141
142 #ifndef HP100_DEFAULT_PRIORITY_TX
143 /* default - don't enable transmit outgoing packets as priority */
144 #define HP100_DEFAULT_PRIORITY_TX 0
145 #endif
146
147 /*
148 * structures
149 */
150
151 struct hp100_private {
152 spinlock_t lock;
153 char id[HP100_SIG_LEN];
154 u_short chip;
155 u_short soft_model;
156 u_int memory_size;
157 u_int virt_memory_size;
158 u_short rx_ratio; /* 1 - 99 */
159 u_short priority_tx; /* != 0 - priority tx */
160 u_short mode; /* PIO, Shared Mem or Busmaster */
161 u_char bus;
162 struct pci_dev *pci_dev;
163 short mem_mapped; /* memory mapped access */
164 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
165 unsigned long mem_ptr_phys; /* physical memory mapped area */
166 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
167 int hub_status; /* was login to hub successful? */
168 u_char mac1_mode;
169 u_char mac2_mode;
170 u_char hash_bytes[8];
171 struct net_device_stats stats;
172
173 /* Rings for busmaster mode: */
174 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
175 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
176 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
177 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
178
179 hp100_ring_t rxring[MAX_RX_PDL];
180 hp100_ring_t txring[MAX_TX_PDL];
181
182 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
183 u_long whatever_offset; /* Offset to bus/phys/dma address */
184 int rxrcommit; /* # Rx PDLs commited to adapter */
185 int txrcommit; /* # Tx PDLs commited to adapter */
186 };
187
188 /*
189 * variables
190 */
191 static const char *hp100_isa_tbl[] = {
192 "HWPF150", /* HP J2573 rev A */
193 "HWP1950", /* HP J2573 */
194 };
195
196 #ifdef CONFIG_EISA
197 static struct eisa_device_id hp100_eisa_tbl[] = {
198 { "HWPF180" }, /* HP J2577 rev A */
199 { "HWP1920" }, /* HP 27248B */
200 { "HWP1940" }, /* HP J2577 */
201 { "HWP1990" }, /* HP J2577 */
202 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
203 { "CPX0401" }, /* FreedomLine 100/VG */
204 { "" } /* Mandatory final entry ! */
205 };
206 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
207 #endif
208
209 #ifdef CONFIG_PCI
210 static struct pci_device_id hp100_pci_tbl[] = {
211 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
212 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
217 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
218 {} /* Terminating entry */
219 };
220 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
221 #endif
222
223 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
224 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
225 static int hp100_mode = 1;
226
227 module_param(hp100_rx_ratio, int, 0);
228 module_param(hp100_priority_tx, int, 0);
229 module_param(hp100_mode, int, 0);
230
231 /*
232 * prototypes
233 */
234
235 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
236 struct pci_dev *pci_dev);
237
238
239 static int hp100_open(struct net_device *dev);
240 static int hp100_close(struct net_device *dev);
241 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
242 static int hp100_start_xmit_bm(struct sk_buff *skb,
243 struct net_device *dev);
244 static void hp100_rx(struct net_device *dev);
245 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
246 static void hp100_misc_interrupt(struct net_device *dev);
247 static void hp100_update_stats(struct net_device *dev);
248 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
249 static void hp100_set_multicast_list(struct net_device *dev);
250 static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs);
251 static void hp100_start_interface(struct net_device *dev);
252 static void hp100_stop_interface(struct net_device *dev);
253 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
254 static int hp100_sense_lan(struct net_device *dev);
255 static int hp100_login_to_vg_hub(struct net_device *dev,
256 u_short force_relogin);
257 static int hp100_down_vg_link(struct net_device *dev);
258 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
259 static void hp100_BM_shutdown(struct net_device *dev);
260 static void hp100_mmuinit(struct net_device *dev);
261 static void hp100_init_pdls(struct net_device *dev);
262 static int hp100_init_rxpdl(struct net_device *dev,
263 register hp100_ring_t * ringptr,
264 register u_int * pdlptr);
265 static int hp100_init_txpdl(struct net_device *dev,
266 register hp100_ring_t * ringptr,
267 register u_int * pdlptr);
268 static void hp100_rxfill(struct net_device *dev);
269 static void hp100_hwinit(struct net_device *dev);
270 static void hp100_clean_txring(struct net_device *dev);
271 #ifdef HP100_DEBUG
272 static void hp100_RegisterDump(struct net_device *dev);
273 #endif
274
275 /* Conversion to new PCI API :
276 * Convert an address in a kernel buffer to a bus/phys/dma address.
277 * This work *only* for memory fragments part of lp->page_vaddr,
278 * because it was properly DMA allocated via pci_alloc_consistent(),
279 * so we just need to "retrieve" the original mapping to bus/phys/dma
280 * address - Jean II */
281 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
282 {
283 struct hp100_private *lp = netdev_priv(dev);
284 return ((u_long) ptr) + lp->whatever_offset;
285 }
286
287 static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
288 {
289 return pci_map_single(lp->pci_dev, data,
290 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
291 }
292
293 /* TODO: This function should not really be needed in a good design... */
294 static void wait(void)
295 {
296 mdelay(1);
297 }
298
299 /*
300 * probe functions
301 * These functions should - if possible - avoid doing write operations
302 * since this could cause problems when the card is not installed.
303 */
304
305 /*
306 * Read board id and convert to string.
307 * Effectively same code as decode_eisa_sig
308 */
309 static __devinit const char *hp100_read_id(int ioaddr)
310 {
311 int i;
312 static char str[HP100_SIG_LEN];
313 unsigned char sig[4], sum;
314 unsigned short rev;
315
316 hp100_page(ID_MAC_ADDR);
317 sum = 0;
318 for (i = 0; i < 4; i++) {
319 sig[i] = hp100_inb(BOARD_ID + i);
320 sum += sig[i];
321 }
322
323 sum += hp100_inb(BOARD_ID + i);
324 if (sum != 0xff)
325 return NULL; /* bad checksum */
326
327 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
328 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
329 str[2] = (sig[1] & 0x1f) + ('A' - 1);
330 rev = (sig[2] << 8) | sig[3];
331 sprintf(str + 3, "%04X", rev);
332
333 return str;
334 }
335
336 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
337 {
338 const char *sig;
339 int i;
340
341 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
342 goto err;
343
344 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
345 release_region(ioaddr, HP100_REGION_SIZE);
346 goto err;
347 }
348
349 sig = hp100_read_id(ioaddr);
350 release_region(ioaddr, HP100_REGION_SIZE);
351
352 if (sig == NULL)
353 goto err;
354
355 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
356 if (!strcmp(hp100_isa_tbl[i], sig))
357 break;
358
359 }
360
361 if (i < ARRAY_SIZE(hp100_isa_tbl))
362 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
363 err:
364 return -ENODEV;
365
366 }
367 /*
368 * Probe for ISA board.
369 * EISA and PCI are handled by device infrastructure.
370 */
371
372 static int __init hp100_isa_probe(struct net_device *dev, int addr)
373 {
374 int err = -ENODEV;
375
376 /* Probe for a specific ISA address */
377 if (addr > 0xff && addr < 0x400)
378 err = hp100_isa_probe1(dev, addr);
379
380 else if (addr != 0)
381 err = -ENXIO;
382
383 else {
384 /* Probe all ISA possible port regions */
385 for (addr = 0x100; addr < 0x400; addr += 0x20) {
386 err = hp100_isa_probe1(dev, addr);
387 if (!err)
388 break;
389 }
390 }
391 return err;
392 }
393
394
395 #ifndef MODULE
396 struct net_device * __init hp100_probe(int unit)
397 {
398 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
399 int err;
400
401 if (!dev)
402 return ERR_PTR(-ENODEV);
403
404 SET_MODULE_OWNER(dev);
405
406 #ifdef HP100_DEBUG_B
407 hp100_outw(0x4200, TRACE);
408 printk("hp100: %s: probe\n", dev->name);
409 #endif
410
411 if (unit >= 0) {
412 sprintf(dev->name, "eth%d", unit);
413 netdev_boot_setup_check(dev);
414 }
415
416 err = hp100_isa_probe(dev, dev->base_addr);
417 if (err)
418 goto out;
419
420 return dev;
421 out:
422 free_netdev(dev);
423 return ERR_PTR(err);
424 }
425 #endif
426
427 static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
428 u_char bus, struct pci_dev *pci_dev)
429 {
430 int i;
431 int err = -ENODEV;
432 const char *eid;
433 u_int chip;
434 u_char uc;
435 u_int memory_size = 0, virt_memory_size = 0;
436 u_short local_mode, lsw;
437 short mem_mapped;
438 unsigned long mem_ptr_phys;
439 void __iomem *mem_ptr_virt;
440 struct hp100_private *lp;
441
442 #ifdef HP100_DEBUG_B
443 hp100_outw(0x4201, TRACE);
444 printk("hp100: %s: probe1\n", dev->name);
445 #endif
446
447 /* memory region for programmed i/o */
448 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
449 goto out1;
450
451 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
452 goto out2;
453
454 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
455 #ifdef HP100_DEBUG
456 if (chip == HP100_CHIPID_SHASTA)
457 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
458 else if (chip == HP100_CHIPID_RAINIER)
459 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
460 else if (chip == HP100_CHIPID_LASSEN)
461 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
462 else
463 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
464 #endif
465
466 dev->base_addr = ioaddr;
467
468 eid = hp100_read_id(ioaddr);
469 if (eid == NULL) { /* bad checksum? */
470 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
471 goto out2;
472 }
473
474 hp100_page(ID_MAC_ADDR);
475 for (i = uc = 0; i < 7; i++)
476 uc += hp100_inb(LAN_ADDR + i);
477 if (uc != 0xff) {
478 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
479 err = -EIO;
480 goto out2;
481 }
482
483 /* Make sure, that all registers are correctly updated... */
484
485 hp100_load_eeprom(dev, ioaddr);
486 wait();
487
488 /*
489 * Determine driver operation mode
490 *
491 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
492 * force driver modes:
493 * hp100_mode=1 -> default, use busmaster mode if configured.
494 * hp100_mode=2 -> enable shared memory mode
495 * hp100_mode=3 -> force use of i/o mapped mode.
496 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
497 */
498
499 /*
500 * LSW values:
501 * 0x2278 -> J2585B, PnP shared memory mode
502 * 0x2270 -> J2585B, shared memory mode, 0xdc000
503 * 0xa23c -> J2585B, I/O mapped mode
504 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
505 * 0x2220 -> EISA HP, I/O (Shasta Chip)
506 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
507 */
508
509 #if 0
510 local_mode = 0x2270;
511 hp100_outw(0xfefe, OPTION_LSW);
512 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
513 #endif
514
515 /* hp100_mode value maybe used in future by another card */
516 local_mode = hp100_mode;
517 if (local_mode < 1 || local_mode > 4)
518 local_mode = 1; /* default */
519 #ifdef HP100_DEBUG
520 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
521 hp100_inw(OPTION_LSW));
522 #endif
523
524 if (local_mode == 3) {
525 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
526 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
527 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
528 printk("hp100: IO mapped mode forced.\n");
529 } else if (local_mode == 2) {
530 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
531 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
532 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
533 printk("hp100: Shared memory mode requested.\n");
534 } else if (local_mode == 4) {
535 if (chip == HP100_CHIPID_LASSEN) {
536 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
537 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
538 printk("hp100: Busmaster mode requested.\n");
539 }
540 local_mode = 1;
541 }
542
543 if (local_mode == 1) { /* default behaviour */
544 lsw = hp100_inw(OPTION_LSW);
545
546 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
547 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
548 #ifdef HP100_DEBUG
549 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
550 #endif
551 local_mode = 3;
552 } else if (chip == HP100_CHIPID_LASSEN &&
553 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
554 /* Conversion to new PCI API :
555 * I don't have the doc, but I assume that the card
556 * can map the full 32bit address space.
557 * Also, we can have EISA Busmaster cards (not tested),
558 * so beware !!! - Jean II */
559 if((bus == HP100_BUS_PCI) &&
560 (pci_set_dma_mask(pci_dev, DMA_32BIT_MASK))) {
561 /* Gracefully fallback to shared memory */
562 goto busmasterfail;
563 }
564 printk("hp100: Busmaster mode enabled.\n");
565 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
566 } else {
567 busmasterfail:
568 #ifdef HP100_DEBUG
569 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
570 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
571 #endif
572 /* In this case, try shared memory mode */
573 local_mode = 2;
574 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
575 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
576 }
577 }
578 #ifdef HP100_DEBUG
579 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
580 #endif
581
582 /* Check for shared memory on the card, eventually remap it */
583 hp100_page(HW_MAP);
584 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
585 mem_ptr_phys = 0UL;
586 mem_ptr_virt = NULL;
587 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
588 virt_memory_size = 0;
589
590 /* For memory mapped or busmaster mode, we want the memory address */
591 if (mem_mapped || (local_mode == 1)) {
592 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
593 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
594
595 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
596 printk("hp100: Can only use programmed i/o mode.\n");
597 mem_ptr_phys = 0;
598 mem_mapped = 0;
599 local_mode = 3; /* Use programmed i/o */
600 }
601
602 /* We do not need access to shared memory in busmaster mode */
603 /* However in slave mode we need to remap high (>1GB) card memory */
604 if (local_mode != 1) { /* = not busmaster */
605 /* We try with smaller memory sizes, if ioremap fails */
606 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
607 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
608 #ifdef HP100_DEBUG
609 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
610 #endif
611 } else {
612 #ifdef HP100_DEBUG
613 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);
614 #endif
615 break;
616 }
617 }
618
619 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
620 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
621 local_mode = 3;
622 virt_memory_size = 0;
623 }
624 }
625 }
626
627 if (local_mode == 3) { /* io mapped forced */
628 mem_mapped = 0;
629 mem_ptr_phys = 0;
630 mem_ptr_virt = NULL;
631 printk("hp100: Using (slow) programmed i/o mode.\n");
632 }
633
634 /* Initialise the "private" data structure for this card. */
635 lp = netdev_priv(dev);
636
637 spin_lock_init(&lp->lock);
638 strlcpy(lp->id, eid, HP100_SIG_LEN);
639 lp->chip = chip;
640 lp->mode = local_mode;
641 lp->bus = bus;
642 lp->pci_dev = pci_dev;
643 lp->priority_tx = hp100_priority_tx;
644 lp->rx_ratio = hp100_rx_ratio;
645 lp->mem_ptr_phys = mem_ptr_phys;
646 lp->mem_ptr_virt = mem_ptr_virt;
647 hp100_page(ID_MAC_ADDR);
648 lp->soft_model = hp100_inb(SOFT_MODEL);
649 lp->mac1_mode = HP100_MAC1MODE3;
650 lp->mac2_mode = HP100_MAC2MODE3;
651 memset(&lp->hash_bytes, 0x00, 8);
652
653 dev->base_addr = ioaddr;
654
655 lp->memory_size = memory_size;
656 lp->virt_memory_size = virt_memory_size;
657 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
658
659 dev->open = hp100_open;
660 dev->stop = hp100_close;
661
662 if (lp->mode == 1) /* busmaster */
663 dev->hard_start_xmit = hp100_start_xmit_bm;
664 else
665 dev->hard_start_xmit = hp100_start_xmit;
666
667 dev->get_stats = hp100_get_stats;
668 dev->set_multicast_list = &hp100_set_multicast_list;
669
670 /* Ask the card for which IRQ line it is configured */
671 if (bus == HP100_BUS_PCI) {
672 dev->irq = pci_dev->irq;
673 } else {
674 hp100_page(HW_MAP);
675 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
676 if (dev->irq == 2)
677 dev->irq = 9;
678 }
679
680 if (lp->mode == 1) /* busmaster */
681 dev->dma = 4;
682
683 /* Ask the card for its MAC address and store it for later use. */
684 hp100_page(ID_MAC_ADDR);
685 for (i = uc = 0; i < 6; i++)
686 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
687
688 /* Reset statistics (counters) */
689 hp100_clear_stats(lp, ioaddr);
690
691 /* If busmaster mode is wanted, a dma-capable memory area is needed for
692 * the rx and tx PDLs
693 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
694 * needed for the allocation of the memory area.
695 */
696
697 /* TODO: We do not need this with old cards, where PDLs are stored
698 * in the cards shared memory area. But currently, busmaster has been
699 * implemented/tested only with the lassen chip anyway... */
700 if (lp->mode == 1) { /* busmaster */
701 dma_addr_t page_baddr;
702 /* Get physically continous memory for TX & RX PDLs */
703 /* Conversion to new PCI API :
704 * Pages are always aligned and zeroed, no need to it ourself.
705 * Doc says should be OK for EISA bus as well - Jean II */
706 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
707 err = -ENOMEM;
708 goto out2;
709 }
710 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
711
712 #ifdef HP100_DEBUG_BM
713 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);
714 #endif
715 lp->rxrcommit = lp->txrcommit = 0;
716 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
717 lp->txrhead = lp->txrtail = &(lp->txring[0]);
718 }
719
720 /* Initialise the card. */
721 /* (I'm not really sure if it's a good idea to do this during probing, but
722 * like this it's assured that the lan connection type can be sensed
723 * correctly)
724 */
725 hp100_hwinit(dev);
726
727 /* Try to find out which kind of LAN the card is connected to. */
728 lp->lan_type = hp100_sense_lan(dev);
729
730 /* Print out a message what about what we think we have probed. */
731 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
732 switch (bus) {
733 case HP100_BUS_EISA:
734 printk("EISA");
735 break;
736 case HP100_BUS_PCI:
737 printk("PCI");
738 break;
739 default:
740 printk("ISA");
741 break;
742 }
743 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
744
745 if (lp->mode == 2) { /* memory mapped */
746 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
747 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
748 if (mem_ptr_virt)
749 printk(" (virtual base %p)", mem_ptr_virt);
750 printk(".\n");
751
752 /* Set for info when doing ifconfig */
753 dev->mem_start = mem_ptr_phys;
754 dev->mem_end = mem_ptr_phys + lp->memory_size;
755 }
756
757 printk("hp100: ");
758 if (lp->lan_type != HP100_LAN_ERR)
759 printk("Adapter is attached to ");
760 switch (lp->lan_type) {
761 case HP100_LAN_100:
762 printk("100Mb/s Voice Grade AnyLAN network.\n");
763 break;
764 case HP100_LAN_10:
765 printk("10Mb/s network (10baseT).\n");
766 break;
767 case HP100_LAN_COAX:
768 printk("10Mb/s network (coax).\n");
769 break;
770 default:
771 printk("Warning! Link down.\n");
772 }
773
774 err = register_netdev(dev);
775 if (err)
776 goto out3;
777
778 return 0;
779 out3:
780 if (local_mode == 1)
781 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
782 lp->page_vaddr_algn,
783 virt_to_whatever(dev, lp->page_vaddr_algn));
784 if (mem_ptr_virt)
785 iounmap(mem_ptr_virt);
786 out2:
787 release_region(ioaddr, HP100_REGION_SIZE);
788 out1:
789 return err;
790 }
791
792 /* This procedure puts the card into a stable init state */
793 static void hp100_hwinit(struct net_device *dev)
794 {
795 int ioaddr = dev->base_addr;
796 struct hp100_private *lp = netdev_priv(dev);
797
798 #ifdef HP100_DEBUG_B
799 hp100_outw(0x4202, TRACE);
800 printk("hp100: %s: hwinit\n", dev->name);
801 #endif
802
803 /* Initialise the card. -------------------------------------------- */
804
805 /* Clear all pending Ints and disable Ints */
806 hp100_page(PERFORMANCE);
807 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
808 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
809
810 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
811 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
812
813 if (lp->mode == 1) {
814 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
815 wait();
816 } else {
817 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
818 hp100_cascade_reset(dev, 1);
819 hp100_page(MAC_CTRL);
820 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
821 }
822
823 /* Initiate EEPROM reload */
824 hp100_load_eeprom(dev, 0);
825
826 wait();
827
828 /* Go into reset again. */
829 hp100_cascade_reset(dev, 1);
830
831 /* Set Option Registers to a safe state */
832 hp100_outw(HP100_DEBUG_EN |
833 HP100_RX_HDR |
834 HP100_EE_EN |
835 HP100_BM_WRITE |
836 HP100_BM_READ | HP100_RESET_HB |
837 HP100_FAKE_INT |
838 HP100_INT_EN |
839 HP100_MEM_EN |
840 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
841
842 hp100_outw(HP100_TRI_INT |
843 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
844
845 hp100_outb(HP100_PRIORITY_TX |
846 HP100_ADV_NXT_PKT |
847 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
848
849 /* TODO: Configure MMU for Ram Test. */
850 /* TODO: Ram Test. */
851
852 /* Re-check if adapter is still at same i/o location */
853 /* (If the base i/o in eeprom has been changed but the */
854 /* registers had not been changed, a reload of the eeprom */
855 /* would move the adapter to the address stored in eeprom */
856
857 /* TODO: Code to implement. */
858
859 /* Until here it was code from HWdiscover procedure. */
860 /* Next comes code from mmuinit procedure of SCO BM driver which is
861 * called from HWconfigure in the SCO driver. */
862
863 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
864 * multicast filter...
865 */
866 hp100_mmuinit(dev);
867
868 /* We don't turn the interrupts on here - this is done by start_interface. */
869 wait(); /* TODO: Do we really need this? */
870
871 /* Enable Hardware (e.g. unreset) */
872 hp100_cascade_reset(dev, 0);
873
874 /* ------- initialisation complete ----------- */
875
876 /* Finally try to log in the Hub if there may be a VG connection. */
877 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
878 hp100_login_to_vg_hub(dev, 0); /* relogin */
879
880 }
881 \f
882
883 /*
884 * mmuinit - Reinitialise Cascade MMU and MAC settings.
885 * Note: Must already be in reset and leaves card in reset.
886 */
887 static void hp100_mmuinit(struct net_device *dev)
888 {
889 int ioaddr = dev->base_addr;
890 struct hp100_private *lp = netdev_priv(dev);
891 int i;
892
893 #ifdef HP100_DEBUG_B
894 hp100_outw(0x4203, TRACE);
895 printk("hp100: %s: mmuinit\n", dev->name);
896 #endif
897
898 #ifdef HP100_DEBUG
899 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
900 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
901 return;
902 }
903 #endif
904
905 /* Make sure IRQs are masked off and ack'ed. */
906 hp100_page(PERFORMANCE);
907 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
908 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
909
910 /*
911 * Enable Hardware
912 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
913 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
914 * - Clear Priority, Advance Pkt and Xmit Cmd
915 */
916
917 hp100_outw(HP100_DEBUG_EN |
918 HP100_RX_HDR |
919 HP100_EE_EN | HP100_RESET_HB |
920 HP100_IO_EN |
921 HP100_FAKE_INT |
922 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
923
924 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
925
926 if (lp->mode == 1) { /* busmaster */
927 hp100_outw(HP100_BM_WRITE |
928 HP100_BM_READ |
929 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
930 } else if (lp->mode == 2) { /* memory mapped */
931 hp100_outw(HP100_BM_WRITE |
932 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
933 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
934 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
935 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
936 } else if (lp->mode == 3) { /* i/o mapped mode */
937 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
938 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
939 }
940
941 hp100_page(HW_MAP);
942 hp100_outb(0, EARLYRXCFG);
943 hp100_outw(0, EARLYTXCFG);
944
945 /*
946 * Enable Bus Master mode
947 */
948 if (lp->mode == 1) { /* busmaster */
949 /* Experimental: Set some PCI configuration bits */
950 hp100_page(HW_MAP);
951 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
952 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
953
954 /* PCI Bus failures should result in a Misc. Interrupt */
955 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
956
957 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
958 hp100_page(HW_MAP);
959 /* Use Burst Mode and switch on PAGE_CK */
960 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
961 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
962 hp100_orb(HP100_BM_PAGE_CK, BM);
963 hp100_orb(HP100_BM_MASTER, BM);
964 } else { /* not busmaster */
965
966 hp100_page(HW_MAP);
967 hp100_andb(~HP100_BM_MASTER, BM);
968 }
969
970 /*
971 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
972 */
973 hp100_page(MMU_CFG);
974 if (lp->mode == 1) { /* only needed for Busmaster */
975 int xmit_stop, recv_stop;
976
977 if ((lp->chip == HP100_CHIPID_RAINIER)
978 || (lp->chip == HP100_CHIPID_SHASTA)) {
979 int pdl_stop;
980
981 /*
982 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
983 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
984 * to the next higher 1k boundary) bytes for the rx-pdl's
985 * Note: For non-etr chips the transmit stop register must be
986 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
987 */
988 pdl_stop = lp->memory_size;
989 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
990 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
991 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
992 #ifdef HP100_DEBUG_BM
993 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
994 #endif
995 } else {
996 /* ETR chip (Lassen) in busmaster mode */
997 xmit_stop = (lp->memory_size) - 1;
998 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
999 }
1000
1001 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1002 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1003 #ifdef HP100_DEBUG_BM
1004 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1005 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1006 #endif
1007 } else {
1008 /* Slave modes (memory mapped and programmed io) */
1009 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1010 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1011 #ifdef HP100_DEBUG
1012 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1013 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1014 #endif
1015 }
1016
1017 /* Write MAC address into page 1 */
1018 hp100_page(MAC_ADDRESS);
1019 for (i = 0; i < 6; i++)
1020 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1021
1022 /* Zero the multicast hash registers */
1023 for (i = 0; i < 8; i++)
1024 hp100_outb(0x0, HASH_BYTE0 + i);
1025
1026 /* Set up MAC defaults */
1027 hp100_page(MAC_CTRL);
1028
1029 /* Go to LAN Page and zero all filter bits */
1030 /* Zero accept error, accept multicast, accept broadcast and accept */
1031 /* all directed packet bits */
1032 hp100_andb(~(HP100_RX_EN |
1033 HP100_TX_EN |
1034 HP100_ACC_ERRORED |
1035 HP100_ACC_MC |
1036 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1037
1038 hp100_outb(0x00, MAC_CFG_2);
1039
1040 /* Zero the frame format bit. This works around a training bug in the */
1041 /* new hubs. */
1042 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1043
1044 if (lp->priority_tx)
1045 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1046 else
1047 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1048
1049 hp100_outb(HP100_ADV_NXT_PKT |
1050 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1051
1052 /* If busmaster, initialize the PDLs */
1053 if (lp->mode == 1)
1054 hp100_init_pdls(dev);
1055
1056 /* Go to performance page and initalize isr and imr registers */
1057 hp100_page(PERFORMANCE);
1058 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1059 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1060 }
1061
1062 /*
1063 * open/close functions
1064 */
1065
1066 static int hp100_open(struct net_device *dev)
1067 {
1068 struct hp100_private *lp = netdev_priv(dev);
1069 #ifdef HP100_DEBUG_B
1070 int ioaddr = dev->base_addr;
1071 #endif
1072
1073 #ifdef HP100_DEBUG_B
1074 hp100_outw(0x4204, TRACE);
1075 printk("hp100: %s: open\n", dev->name);
1076 #endif
1077
1078 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1079 if (request_irq(dev->irq, hp100_interrupt,
1080 lp->bus == HP100_BUS_PCI || lp->bus ==
1081 HP100_BUS_EISA ? SA_SHIRQ : SA_INTERRUPT,
1082 "hp100", dev)) {
1083 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1084 return -EAGAIN;
1085 }
1086
1087 dev->trans_start = jiffies;
1088 netif_start_queue(dev);
1089
1090 lp->lan_type = hp100_sense_lan(dev);
1091 lp->mac1_mode = HP100_MAC1MODE3;
1092 lp->mac2_mode = HP100_MAC2MODE3;
1093 memset(&lp->hash_bytes, 0x00, 8);
1094
1095 hp100_stop_interface(dev);
1096
1097 hp100_hwinit(dev);
1098
1099 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1100
1101 return 0;
1102 }
1103
1104 /* The close function is called when the interface is to be brought down */
1105 static int hp100_close(struct net_device *dev)
1106 {
1107 int ioaddr = dev->base_addr;
1108 struct hp100_private *lp = netdev_priv(dev);
1109
1110 #ifdef HP100_DEBUG_B
1111 hp100_outw(0x4205, TRACE);
1112 printk("hp100: %s: close\n", dev->name);
1113 #endif
1114
1115 hp100_page(PERFORMANCE);
1116 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1117
1118 hp100_stop_interface(dev);
1119
1120 if (lp->lan_type == HP100_LAN_100)
1121 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1122
1123 netif_stop_queue(dev);
1124
1125 free_irq(dev->irq, dev);
1126
1127 #ifdef HP100_DEBUG
1128 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1129 hp100_inw(OPTION_LSW));
1130 #endif
1131
1132 return 0;
1133 }
1134 \f
1135
1136 /*
1137 * Configure the PDL Rx rings and LAN
1138 */
1139 static void hp100_init_pdls(struct net_device *dev)
1140 {
1141 struct hp100_private *lp = netdev_priv(dev);
1142 hp100_ring_t *ringptr;
1143 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1144 int i;
1145
1146 #ifdef HP100_DEBUG_B
1147 int ioaddr = dev->base_addr;
1148 #endif
1149
1150 #ifdef HP100_DEBUG_B
1151 hp100_outw(0x4206, TRACE);
1152 printk("hp100: %s: init pdls\n", dev->name);
1153 #endif
1154
1155 if (0 == lp->page_vaddr_algn)
1156 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1157 else {
1158 /* pageptr shall point into the DMA accessible memory region */
1159 /* we use this pointer to status the upper limit of allocated */
1160 /* memory in the allocated page. */
1161 /* note: align the pointers to the pci cache line size */
1162 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1163 pageptr = lp->page_vaddr_algn;
1164
1165 lp->rxrcommit = 0;
1166 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1167
1168 /* Initialise Rx Ring */
1169 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1170 lp->rxring[i].next = ringptr;
1171 ringptr = &(lp->rxring[i]);
1172 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1173 }
1174
1175 /* Initialise Tx Ring */
1176 lp->txrcommit = 0;
1177 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1178 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1179 lp->txring[i].next = ringptr;
1180 ringptr = &(lp->txring[i]);
1181 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1182 }
1183 }
1184 }
1185 \f
1186
1187 /* These functions "format" the entries in the pdl structure */
1188 /* They return how much memory the fragments need. */
1189 static int hp100_init_rxpdl(struct net_device *dev,
1190 register hp100_ring_t * ringptr,
1191 register u32 * pdlptr)
1192 {
1193 /* pdlptr is starting address for this pdl */
1194
1195 if (0 != (((unsigned long) pdlptr) & 0xf))
1196 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1197 dev->name, (unsigned long) pdlptr);
1198
1199 ringptr->pdl = pdlptr + 1;
1200 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1201 ringptr->skb = (void *) NULL;
1202
1203 /*
1204 * Write address and length of first PDL Fragment (which is used for
1205 * storing the RX-Header
1206 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1207 * store this information. (PDH is at offset 0x04)
1208 */
1209 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1210
1211 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1212 *(pdlptr + 3) = 4; /* Length Frag 1 */
1213
1214 return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
1215 }
1216
1217
1218 static int hp100_init_txpdl(struct net_device *dev,
1219 register hp100_ring_t * ringptr,
1220 register u32 * pdlptr)
1221 {
1222 if (0 != (((unsigned long) pdlptr) & 0xf))
1223 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1224
1225 ringptr->pdl = pdlptr; /* +1; */
1226 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1227 ringptr->skb = (void *) NULL;
1228
1229 return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
1230 }
1231
1232 /*
1233 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1234 * for possible odd word alignment rounding up to next dword and set PDL
1235 * address for fragment#2
1236 * Returns: 0 if unable to allocate skb_buff
1237 * 1 if successful
1238 */
1239 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1240 struct net_device *dev)
1241 {
1242 #ifdef HP100_DEBUG_B
1243 int ioaddr = dev->base_addr;
1244 #endif
1245 #ifdef HP100_DEBUG_BM
1246 u_int *p;
1247 #endif
1248
1249 #ifdef HP100_DEBUG_B
1250 hp100_outw(0x4207, TRACE);
1251 printk("hp100: %s: build rx pdl\n", dev->name);
1252 #endif
1253
1254 /* Allocate skb buffer of maximum size */
1255 /* Note: This depends on the alloc_skb functions allocating more
1256 * space than requested, i.e. aligning to 16bytes */
1257
1258 ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
1259
1260 if (NULL != ringptr->skb) {
1261 /*
1262 * Reserve 2 bytes at the head of the buffer to land the IP header
1263 * on a long word boundary (According to the Network Driver section
1264 * in the Linux KHG, this should help to increase performance.)
1265 */
1266 skb_reserve(ringptr->skb, 2);
1267
1268 ringptr->skb->dev = dev;
1269 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1270
1271 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1272 /* Note: 1st Fragment is used for the 4 byte packet status
1273 * (receive header). Its PDL entries are set up by init_rxpdl. So
1274 * here we only have to set up the PDL fragment entries for the data
1275 * part. Those 4 bytes will be stored in the DMA memory region
1276 * directly before the PDL.
1277 */
1278 #ifdef HP100_DEBUG_BM
1279 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1280 dev->name, (u_int) ringptr->pdl,
1281 ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
1282 (unsigned int) ringptr->skb->data);
1283 #endif
1284
1285 /* Conversion to new PCI API : map skbuf data to PCI bus.
1286 * Doc says it's OK for EISA as well - Jean II */
1287 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1288 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1289 ringptr->skb->data);
1290 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1291
1292 #ifdef HP100_DEBUG_BM
1293 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1294 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1295 #endif
1296 return (1);
1297 }
1298 /* else: */
1299 /* alloc_skb failed (no memory) -> still can receive the header
1300 * fragment into PDL memory. make PDL safe by clearing msgptr and
1301 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1302 */
1303 #ifdef HP100_DEBUG_BM
1304 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1305 #endif
1306
1307 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1308
1309 return (0);
1310 }
1311
1312 /*
1313 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1314 *
1315 * Makes assumption that skb's are always contiguous memory areas and
1316 * therefore PDLs contain only 2 physical fragments.
1317 * - While the number of Rx PDLs with buffers is less than maximum
1318 * a. Get a maximum packet size skb
1319 * b. Put the physical address of the buffer into the PDL.
1320 * c. Output physical address of PDL to adapter.
1321 */
1322 static void hp100_rxfill(struct net_device *dev)
1323 {
1324 int ioaddr = dev->base_addr;
1325
1326 struct hp100_private *lp = netdev_priv(dev);
1327 hp100_ring_t *ringptr;
1328
1329 #ifdef HP100_DEBUG_B
1330 hp100_outw(0x4208, TRACE);
1331 printk("hp100: %s: rxfill\n", dev->name);
1332 #endif
1333
1334 hp100_page(PERFORMANCE);
1335
1336 while (lp->rxrcommit < MAX_RX_PDL) {
1337 /*
1338 ** Attempt to get a buffer and build a Rx PDL.
1339 */
1340 ringptr = lp->rxrtail;
1341 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1342 return; /* None available, return */
1343 }
1344
1345 /* Hand this PDL over to the card */
1346 /* Note: This needs performance page selected! */
1347 #ifdef HP100_DEBUG_BM
1348 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1349 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1350 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1351 #endif
1352
1353 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1354
1355 lp->rxrcommit += 1;
1356 lp->rxrtail = ringptr->next;
1357 }
1358 }
1359
1360 /*
1361 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1362 */
1363
1364 static void hp100_BM_shutdown(struct net_device *dev)
1365 {
1366 int ioaddr = dev->base_addr;
1367 struct hp100_private *lp = netdev_priv(dev);
1368 unsigned long time;
1369
1370 #ifdef HP100_DEBUG_B
1371 hp100_outw(0x4209, TRACE);
1372 printk("hp100: %s: bm shutdown\n", dev->name);
1373 #endif
1374
1375 hp100_page(PERFORMANCE);
1376 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1377 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1378
1379 /* Ensure Interrupts are off */
1380 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1381
1382 /* Disable all MAC activity */
1383 hp100_page(MAC_CTRL);
1384 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1385
1386 /* If cascade MMU is not already in reset */
1387 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1388 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1389 * MMU pointers will not be reset out from underneath
1390 */
1391 hp100_page(MAC_CTRL);
1392 for (time = 0; time < 5000; time++) {
1393 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1394 break;
1395 }
1396
1397 /* Shutdown algorithm depends on the generation of Cascade */
1398 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1399 /* Disable Busmaster mode and wait for bit to go to zero. */
1400 hp100_page(HW_MAP);
1401 hp100_andb(~HP100_BM_MASTER, BM);
1402 /* 100 ms timeout */
1403 for (time = 0; time < 32000; time++) {
1404 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1405 break;
1406 }
1407 } else { /* Shasta or Rainier Shutdown/Reset */
1408 /* To ensure all bus master inloading activity has ceased,
1409 * wait for no Rx PDAs or no Rx packets on card.
1410 */
1411 hp100_page(PERFORMANCE);
1412 /* 100 ms timeout */
1413 for (time = 0; time < 10000; time++) {
1414 /* RX_PDL: PDLs not executed. */
1415 /* RX_PKT_CNT: RX'd packets on card. */
1416 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1417 break;
1418 }
1419
1420 if (time >= 10000)
1421 printk("hp100: %s: BM shutdown error.\n", dev->name);
1422
1423 /* To ensure all bus master outloading activity has ceased,
1424 * wait until the Tx PDA count goes to zero or no more Tx space
1425 * available in the Tx region of the card.
1426 */
1427 /* 100 ms timeout */
1428 for (time = 0; time < 10000; time++) {
1429 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1430 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1431 break;
1432 }
1433
1434 /* Disable Busmaster mode */
1435 hp100_page(HW_MAP);
1436 hp100_andb(~HP100_BM_MASTER, BM);
1437 } /* end of shutdown procedure for non-etr parts */
1438
1439 hp100_cascade_reset(dev, 1);
1440 }
1441 hp100_page(PERFORMANCE);
1442 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1443 /* Busmaster mode should be shut down now. */
1444 }
1445
1446 static int hp100_check_lan(struct net_device *dev)
1447 {
1448 struct hp100_private *lp = netdev_priv(dev);
1449
1450 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1451 hp100_stop_interface(dev);
1452 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1453 printk("hp100: %s: no connection found - check wire\n", dev->name);
1454 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1455 return -EIO;
1456 }
1457 if (lp->lan_type == HP100_LAN_100)
1458 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1459 hp100_start_interface(dev);
1460 }
1461 return 0;
1462 }
1463
1464 /*
1465 * transmit functions
1466 */
1467
1468 /* tx function for busmaster mode */
1469 static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1470 {
1471 unsigned long flags;
1472 int i, ok_flag;
1473 int ioaddr = dev->base_addr;
1474 struct hp100_private *lp = netdev_priv(dev);
1475 hp100_ring_t *ringptr;
1476
1477 #ifdef HP100_DEBUG_B
1478 hp100_outw(0x4210, TRACE);
1479 printk("hp100: %s: start_xmit_bm\n", dev->name);
1480 #endif
1481
1482 if (skb == NULL) {
1483 return 0;
1484 }
1485
1486 if (skb->len <= 0)
1487 return 0;
1488
1489 if (skb->len < ETH_ZLEN && lp->chip == HP100_CHIPID_SHASTA) {
1490 skb = skb_padto(skb, ETH_ZLEN);
1491 if (skb == NULL)
1492 return 0;
1493 }
1494
1495 /* Get Tx ring tail pointer */
1496 if (lp->txrtail->next == lp->txrhead) {
1497 /* No memory. */
1498 #ifdef HP100_DEBUG
1499 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1500 #endif
1501 /* not waited long enough since last tx? */
1502 if (jiffies - dev->trans_start < HZ)
1503 return -EAGAIN;
1504
1505 if (hp100_check_lan(dev))
1506 return -EIO;
1507
1508 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1509 /* we have a 100Mb/s adapter but it isn't connected to hub */
1510 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1511 hp100_stop_interface(dev);
1512 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1513 hp100_start_interface(dev);
1514 } else {
1515 spin_lock_irqsave(&lp->lock, flags);
1516 hp100_ints_off(); /* Useful ? Jean II */
1517 i = hp100_sense_lan(dev);
1518 hp100_ints_on();
1519 spin_unlock_irqrestore(&lp->lock, flags);
1520 if (i == HP100_LAN_ERR)
1521 printk("hp100: %s: link down detected\n", dev->name);
1522 else if (lp->lan_type != i) { /* cable change! */
1523 /* it's very hard - all network settings must be changed!!! */
1524 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1525 lp->lan_type = i;
1526 hp100_stop_interface(dev);
1527 if (lp->lan_type == HP100_LAN_100)
1528 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1529 hp100_start_interface(dev);
1530 } else {
1531 printk("hp100: %s: interface reset\n", dev->name);
1532 hp100_stop_interface(dev);
1533 if (lp->lan_type == HP100_LAN_100)
1534 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1535 hp100_start_interface(dev);
1536 }
1537 }
1538
1539 dev->trans_start = jiffies;
1540 return -EAGAIN;
1541 }
1542
1543 /*
1544 * we have to turn int's off before modifying this, otherwise
1545 * a tx_pdl_cleanup could occur at the same time
1546 */
1547 spin_lock_irqsave(&lp->lock, flags);
1548 ringptr = lp->txrtail;
1549 lp->txrtail = ringptr->next;
1550
1551 /* Check whether packet has minimal packet size */
1552 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1553 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1554
1555 ringptr->skb = skb;
1556 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1557 if (lp->chip == HP100_CHIPID_SHASTA) {
1558 /* TODO:Could someone who has the EISA card please check if this works? */
1559 ringptr->pdl[2] = i;
1560 } else { /* Lassen */
1561 /* In the PDL, don't use the padded size but the real packet size: */
1562 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1563 }
1564 /* Conversion to new PCI API : map skbuf data to PCI bus.
1565 * Doc says it's OK for EISA as well - Jean II */
1566 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1567
1568 /* Hand this PDL to the card. */
1569 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1570
1571 lp->txrcommit++;
1572 spin_unlock_irqrestore(&lp->lock, flags);
1573
1574 /* Update statistics */
1575 lp->stats.tx_packets++;
1576 lp->stats.tx_bytes += skb->len;
1577 dev->trans_start = jiffies;
1578
1579 return 0;
1580 }
1581 \f
1582
1583 /* clean_txring checks if packets have been sent by the card by reading
1584 * the TX_PDL register from the performance page and comparing it to the
1585 * number of commited packets. It then frees the skb's of the packets that
1586 * obviously have been sent to the network.
1587 *
1588 * Needs the PERFORMANCE page selected.
1589 */
1590 static void hp100_clean_txring(struct net_device *dev)
1591 {
1592 struct hp100_private *lp = netdev_priv(dev);
1593 int ioaddr = dev->base_addr;
1594 int donecount;
1595
1596 #ifdef HP100_DEBUG_B
1597 hp100_outw(0x4211, TRACE);
1598 printk("hp100: %s: clean txring\n", dev->name);
1599 #endif
1600
1601 /* How many PDLs have been transmitted? */
1602 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1603
1604 #ifdef HP100_DEBUG
1605 if (donecount > MAX_TX_PDL)
1606 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1607 #endif
1608
1609 for (; 0 != donecount; donecount--) {
1610 #ifdef HP100_DEBUG_BM
1611 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1612 dev->name, (u_int) lp->txrhead->skb->data,
1613 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1614 #endif
1615 /* Conversion to new PCI API : NOP */
1616 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1617 dev_kfree_skb_any(lp->txrhead->skb);
1618 lp->txrhead->skb = (void *) NULL;
1619 lp->txrhead = lp->txrhead->next;
1620 lp->txrcommit--;
1621 }
1622 }
1623
1624 /* tx function for slave modes */
1625 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1626 {
1627 unsigned long flags;
1628 int i, ok_flag;
1629 int ioaddr = dev->base_addr;
1630 u_short val;
1631 struct hp100_private *lp = netdev_priv(dev);
1632
1633 #ifdef HP100_DEBUG_B
1634 hp100_outw(0x4212, TRACE);
1635 printk("hp100: %s: start_xmit\n", dev->name);
1636 #endif
1637
1638 if (skb == NULL) {
1639 return 0;
1640 }
1641
1642 if (skb->len <= 0)
1643 return 0;
1644
1645 if (hp100_check_lan(dev))
1646 return -EIO;
1647
1648 /* If there is not enough free memory on the card... */
1649 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1650 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1651 #ifdef HP100_DEBUG
1652 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1653 #endif
1654 /* not waited long enough since last failed tx try? */
1655 if (jiffies - dev->trans_start < HZ) {
1656 #ifdef HP100_DEBUG
1657 printk("hp100: %s: trans_start timing problem\n",
1658 dev->name);
1659 #endif
1660 return -EAGAIN;
1661 }
1662 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1663 /* we have a 100Mb/s adapter but it isn't connected to hub */
1664 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1665 hp100_stop_interface(dev);
1666 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1667 hp100_start_interface(dev);
1668 } else {
1669 spin_lock_irqsave(&lp->lock, flags);
1670 hp100_ints_off(); /* Useful ? Jean II */
1671 i = hp100_sense_lan(dev);
1672 hp100_ints_on();
1673 spin_unlock_irqrestore(&lp->lock, flags);
1674 if (i == HP100_LAN_ERR)
1675 printk("hp100: %s: link down detected\n", dev->name);
1676 else if (lp->lan_type != i) { /* cable change! */
1677 /* it's very hard - all network setting must be changed!!! */
1678 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1679 lp->lan_type = i;
1680 hp100_stop_interface(dev);
1681 if (lp->lan_type == HP100_LAN_100)
1682 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1683 hp100_start_interface(dev);
1684 } else {
1685 printk("hp100: %s: interface reset\n", dev->name);
1686 hp100_stop_interface(dev);
1687 if (lp->lan_type == HP100_LAN_100)
1688 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1689 hp100_start_interface(dev);
1690 mdelay(1);
1691 }
1692 }
1693 dev->trans_start = jiffies;
1694 return -EAGAIN;
1695 }
1696
1697 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1698 #ifdef HP100_DEBUG_TX
1699 printk("hp100: %s: start_xmit: busy\n", dev->name);
1700 #endif
1701 }
1702
1703 spin_lock_irqsave(&lp->lock, flags);
1704 hp100_ints_off();
1705 val = hp100_inw(IRQ_STATUS);
1706 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1707 * when the current packet being transmitted on the wire is completed. */
1708 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1709 #ifdef HP100_DEBUG_TX
1710 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1711 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1712 #endif
1713
1714 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1715 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1716
1717 hp100_outw(i, DATA32); /* tell card the total packet length */
1718 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1719
1720 if (lp->mode == 2) { /* memory mapped */
1721 if (lp->mem_ptr_virt) { /* high pci memory was remapped */
1722 /* Note: The J2585B needs alignment to 32bits here! */
1723 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1724 if (!ok_flag)
1725 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1726 } else {
1727 /* Note: The J2585B needs alignment to 32bits here! */
1728 isa_memcpy_toio(lp->mem_ptr_phys, skb->data, (skb->len + 3) & ~3);
1729 if (!ok_flag)
1730 isa_memset_io(lp->mem_ptr_phys, 0, HP100_MIN_PACKET_SIZE - skb->len);
1731 }
1732 } else { /* programmed i/o */
1733 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1734 (skb->len + 3) >> 2);
1735 if (!ok_flag)
1736 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1737 hp100_outl(0, DATA32);
1738 }
1739
1740 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1741
1742 lp->stats.tx_packets++;
1743 lp->stats.tx_bytes += skb->len;
1744 dev->trans_start = jiffies;
1745 hp100_ints_on();
1746 spin_unlock_irqrestore(&lp->lock, flags);
1747
1748 dev_kfree_skb_any(skb);
1749
1750 #ifdef HP100_DEBUG_TX
1751 printk("hp100: %s: start_xmit: end\n", dev->name);
1752 #endif
1753
1754 return 0;
1755 }
1756 \f
1757
1758 /*
1759 * Receive Function (Non-Busmaster mode)
1760 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1761 * packet counter is non-zero.
1762 * For non-busmaster, this function does the whole work of transfering
1763 * the packet to the host memory and then up to higher layers via skb
1764 * and netif_rx.
1765 */
1766
1767 static void hp100_rx(struct net_device *dev)
1768 {
1769 int packets, pkt_len;
1770 int ioaddr = dev->base_addr;
1771 struct hp100_private *lp = netdev_priv(dev);
1772 u_int header;
1773 struct sk_buff *skb;
1774
1775 #ifdef DEBUG_B
1776 hp100_outw(0x4213, TRACE);
1777 printk("hp100: %s: rx\n", dev->name);
1778 #endif
1779
1780 /* First get indication of received lan packet */
1781 /* RX_PKT_CND indicates the number of packets which have been fully */
1782 /* received onto the card but have not been fully transferred of the card */
1783 packets = hp100_inb(RX_PKT_CNT);
1784 #ifdef HP100_DEBUG_RX
1785 if (packets > 1)
1786 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1787 #endif
1788
1789 while (packets-- > 0) {
1790 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1791 /* really advanced to the next packet. */
1792 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1793 #ifdef HP100_DEBUG_RX
1794 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1795 #endif
1796 }
1797
1798 /* First we get the header, which contains information about the */
1799 /* actual length of the received packet. */
1800 if (lp->mode == 2) { /* memory mapped mode */
1801 if (lp->mem_ptr_virt) /* if memory was remapped */
1802 header = readl(lp->mem_ptr_virt);
1803 else
1804 header = isa_readl(lp->mem_ptr_phys);
1805 } else /* programmed i/o */
1806 header = hp100_inl(DATA32);
1807
1808 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1809
1810 #ifdef HP100_DEBUG_RX
1811 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1812 dev->name, header & HP100_PKT_LEN_MASK,
1813 (header >> 16) & 0xfff8, (header >> 16) & 7);
1814 #endif
1815
1816 /* Now we allocate the skb and transfer the data into it. */
1817 skb = dev_alloc_skb(pkt_len+2);
1818 if (skb == NULL) { /* Not enough memory->drop packet */
1819 #ifdef HP100_DEBUG
1820 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1821 dev->name, pkt_len);
1822 #endif
1823 lp->stats.rx_dropped++;
1824 } else { /* skb successfully allocated */
1825
1826 u_char *ptr;
1827
1828 skb_reserve(skb,2);
1829 skb->dev = dev;
1830
1831 /* ptr to start of the sk_buff data area */
1832 skb_put(skb, pkt_len);
1833 ptr = skb->data;
1834
1835 /* Now transfer the data from the card into that area */
1836 if (lp->mode == 2) {
1837 if (lp->mem_ptr_virt)
1838 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1839 /* Note alignment to 32bit transfers */
1840 else
1841 isa_memcpy_fromio(ptr, lp->mem_ptr_phys, pkt_len);
1842 } else /* io mapped */
1843 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1844
1845 skb->protocol = eth_type_trans(skb, dev);
1846
1847 #ifdef HP100_DEBUG_RX
1848 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1849 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1850 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1851 ptr[9], ptr[10], ptr[11]);
1852 #endif
1853 netif_rx(skb);
1854 dev->last_rx = jiffies;
1855 lp->stats.rx_packets++;
1856 lp->stats.rx_bytes += pkt_len;
1857 }
1858
1859 /* Indicate the card that we have got the packet */
1860 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1861
1862 switch (header & 0x00070000) {
1863 case (HP100_MULTI_ADDR_HASH << 16):
1864 case (HP100_MULTI_ADDR_NO_HASH << 16):
1865 lp->stats.multicast++;
1866 break;
1867 }
1868 } /* end of while(there are packets) loop */
1869 #ifdef HP100_DEBUG_RX
1870 printk("hp100_rx: %s: end\n", dev->name);
1871 #endif
1872 }
1873
1874 /*
1875 * Receive Function for Busmaster Mode
1876 */
1877 static void hp100_rx_bm(struct net_device *dev)
1878 {
1879 int ioaddr = dev->base_addr;
1880 struct hp100_private *lp = netdev_priv(dev);
1881 hp100_ring_t *ptr;
1882 u_int header;
1883 int pkt_len;
1884
1885 #ifdef HP100_DEBUG_B
1886 hp100_outw(0x4214, TRACE);
1887 printk("hp100: %s: rx_bm\n", dev->name);
1888 #endif
1889
1890 #ifdef HP100_DEBUG
1891 if (0 == lp->rxrcommit) {
1892 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1893 return;
1894 } else
1895 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1896 * the cards BM engine */
1897 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1898 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1899 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1900 lp->rxrcommit);
1901 return;
1902 }
1903 #endif
1904
1905 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1906 /*
1907 * The packet was received into the pdl pointed to by lp->rxrhead (
1908 * the oldest pdl in the ring
1909 */
1910
1911 /* First we get the header, which contains information about the */
1912 /* actual length of the received packet. */
1913
1914 ptr = lp->rxrhead;
1915
1916 header = *(ptr->pdl - 1);
1917 pkt_len = (header & HP100_PKT_LEN_MASK);
1918
1919 /* Conversion to new PCI API : NOP */
1920 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1921
1922 #ifdef HP100_DEBUG_BM
1923 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1924 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1925 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1926 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",
1927 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1928 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1929 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1930 #endif
1931
1932 if ((pkt_len >= MIN_ETHER_SIZE) &&
1933 (pkt_len <= MAX_ETHER_SIZE)) {
1934 if (ptr->skb == NULL) {
1935 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1936 /* can happen if we only allocated room for the pdh due to memory shortage. */
1937 lp->stats.rx_dropped++;
1938 } else {
1939 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1940 ptr->skb->protocol =
1941 eth_type_trans(ptr->skb, dev);
1942
1943 netif_rx(ptr->skb); /* Up and away... */
1944
1945 dev->last_rx = jiffies;
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 \f
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 = %02x:%02x:%02x:%02x:%02x:%02x, ",
2114 dev->name, addrs[0], addrs[1], addrs[2],
2115 addrs[3], addrs[4], addrs[5]);
2116 #endif
2117 for (j = idx = 0; j < 6; j++) {
2118 idx ^= *addrs++ & 0x3f;
2119 printk(":%02x:", idx);
2120 }
2121 #ifdef HP100_DEBUG
2122 printk("idx = %i\n", idx);
2123 #endif
2124 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2125 }
2126 }
2127 }
2128 #else
2129 memset(&lp->hash_bytes, 0xff, 8);
2130 #endif
2131 } else {
2132 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2133 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2134 memset(&lp->hash_bytes, 0x00, 8);
2135 }
2136
2137 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2138 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2139 int i;
2140
2141 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2142 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2143 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2144
2145 hp100_page(MAC_ADDRESS);
2146 for (i = 0; i < 8; i++)
2147 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2148 #ifdef HP100_DEBUG
2149 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2150 dev->name, lp->mac1_mode, lp->mac2_mode,
2151 lp->hash_bytes[0], lp->hash_bytes[1],
2152 lp->hash_bytes[2], lp->hash_bytes[3],
2153 lp->hash_bytes[4], lp->hash_bytes[5],
2154 lp->hash_bytes[6], lp->hash_bytes[7]);
2155 #endif
2156
2157 if (lp->lan_type == HP100_LAN_100) {
2158 #ifdef HP100_DEBUG
2159 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2160 #endif
2161 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2162 }
2163 } else {
2164 int i;
2165 u_char old_hash_bytes[8];
2166
2167 hp100_page(MAC_ADDRESS);
2168 for (i = 0; i < 8; i++)
2169 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2170 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2171 for (i = 0; i < 8; i++)
2172 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2173 #ifdef HP100_DEBUG
2174 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2175 dev->name, lp->hash_bytes[0],
2176 lp->hash_bytes[1], lp->hash_bytes[2],
2177 lp->hash_bytes[3], lp->hash_bytes[4],
2178 lp->hash_bytes[5], lp->hash_bytes[6],
2179 lp->hash_bytes[7]);
2180 #endif
2181
2182 if (lp->lan_type == HP100_LAN_100) {
2183 #ifdef HP100_DEBUG
2184 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2185 #endif
2186 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2187 }
2188 }
2189 }
2190
2191 hp100_page(MAC_CTRL);
2192 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2193 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2194
2195 hp100_page(PERFORMANCE);
2196 hp100_ints_on();
2197 spin_unlock_irqrestore(&lp->lock, flags);
2198 }
2199
2200 /*
2201 * hardware interrupt handling
2202 */
2203
2204 static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs)
2205 {
2206 struct net_device *dev = (struct net_device *) dev_id;
2207 struct hp100_private *lp = netdev_priv(dev);
2208
2209 int ioaddr;
2210 u_int val;
2211
2212 if (dev == NULL)
2213 return IRQ_NONE;
2214 ioaddr = dev->base_addr;
2215
2216 spin_lock(&lp->lock);
2217
2218 hp100_ints_off();
2219
2220 #ifdef HP100_DEBUG_B
2221 hp100_outw(0x4219, TRACE);
2222 #endif
2223
2224 /* hp100_page( PERFORMANCE ); */
2225 val = hp100_inw(IRQ_STATUS);
2226 #ifdef HP100_DEBUG_IRQ
2227 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2228 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2229 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2230 #endif
2231
2232 if (val == 0) { /* might be a shared interrupt */
2233 spin_unlock(&lp->lock);
2234 hp100_ints_on();
2235 return IRQ_NONE;
2236 }
2237 /* We're only interested in those interrupts we really enabled. */
2238 /* val &= hp100_inw( IRQ_MASK ); */
2239
2240 /*
2241 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2242 * is considered executed whenever the RX_PDL data structure is no longer
2243 * needed.
2244 */
2245 if (val & HP100_RX_PDL_FILL_COMPL) {
2246 if (lp->mode == 1)
2247 hp100_rx_bm(dev);
2248 else {
2249 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2250 }
2251 }
2252
2253 /*
2254 * The RX_PACKET interrupt is set, when the receive packet counter is
2255 * non zero. We use this interrupt for receiving in slave mode. In
2256 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2257 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2258 * we somehow have missed a rx_pdl_fill_compl interrupt.
2259 */
2260
2261 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2262 if (lp->mode != 1) /* non busmaster */
2263 hp100_rx(dev);
2264 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2265 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2266 hp100_rx_bm(dev);
2267 }
2268 }
2269
2270 /*
2271 * Ack. that we have noticed the interrupt and thereby allow next one.
2272 * Note that this is now done after the slave rx function, since first
2273 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2274 * on the J2573.
2275 */
2276 hp100_outw(val, IRQ_STATUS);
2277
2278 /*
2279 * RX_ERROR is set when a packet is dropped due to no memory resources on
2280 * the card or when a RCV_ERR occurs.
2281 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2282 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2283 */
2284 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2285 #ifdef HP100_DEBUG_IRQ
2286 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2287 #endif
2288 hp100_update_stats(dev);
2289 if (lp->mode == 1) {
2290 hp100_rxfill(dev);
2291 hp100_clean_txring(dev);
2292 }
2293 }
2294
2295 /*
2296 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2297 */
2298 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2299 hp100_rxfill(dev);
2300
2301 /*
2302 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2303 * is completed
2304 */
2305 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2306 hp100_clean_txring(dev);
2307
2308 /*
2309 * MISC_ERROR is set when either the LAN link goes down or a detected
2310 * bus error occurs.
2311 */
2312 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2313 #ifdef HP100_DEBUG_IRQ
2314 printk
2315 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2316 dev->name);
2317 #endif
2318 if (lp->mode == 1) {
2319 hp100_clean_txring(dev);
2320 hp100_rxfill(dev);
2321 }
2322 hp100_misc_interrupt(dev);
2323 }
2324
2325 spin_unlock(&lp->lock);
2326 hp100_ints_on();
2327 return IRQ_HANDLED;
2328 }
2329
2330 /*
2331 * some misc functions
2332 */
2333
2334 static void hp100_start_interface(struct net_device *dev)
2335 {
2336 unsigned long flags;
2337 int ioaddr = dev->base_addr;
2338 struct hp100_private *lp = netdev_priv(dev);
2339
2340 #ifdef HP100_DEBUG_B
2341 hp100_outw(0x4220, TRACE);
2342 printk("hp100: %s: hp100_start_interface\n", dev->name);
2343 #endif
2344
2345 spin_lock_irqsave(&lp->lock, flags);
2346
2347 /* Ensure the adapter does not want to request an interrupt when */
2348 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2349 hp100_page(PERFORMANCE);
2350 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2351 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2352 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2353 OPTION_LSW);
2354 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2355 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2356
2357 if (lp->mode == 1) {
2358 /* Make sure BM bit is set... */
2359 hp100_page(HW_MAP);
2360 hp100_orb(HP100_BM_MASTER, BM);
2361 hp100_rxfill(dev);
2362 } else if (lp->mode == 2) {
2363 /* Enable memory mapping. Note: Don't do this when busmaster. */
2364 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2365 }
2366
2367 hp100_page(PERFORMANCE);
2368 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2369 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2370
2371 /* enable a few interrupts: */
2372 if (lp->mode == 1) { /* busmaster mode */
2373 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2374 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2375 /* HP100_RX_PACKET | */
2376 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2377 /* HP100_TX_PDA_ZERO | */
2378 HP100_TX_COMPLETE |
2379 /* HP100_MISC_ERROR | */
2380 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2381 } else {
2382 hp100_outw(HP100_RX_PACKET |
2383 HP100_RX_ERROR | HP100_SET_HB |
2384 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2385 }
2386
2387 /* Note : before hp100_set_multicast_list(), because it will play with
2388 * spinlock itself... Jean II */
2389 spin_unlock_irqrestore(&lp->lock, flags);
2390
2391 /* Enable MAC Tx and RX, set MAC modes, ... */
2392 hp100_set_multicast_list(dev);
2393 }
2394
2395 static void hp100_stop_interface(struct net_device *dev)
2396 {
2397 struct hp100_private *lp = netdev_priv(dev);
2398 int ioaddr = dev->base_addr;
2399 u_int val;
2400
2401 #ifdef HP100_DEBUG_B
2402 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2403 hp100_outw(0x4221, TRACE);
2404 #endif
2405
2406 if (lp->mode == 1)
2407 hp100_BM_shutdown(dev);
2408 else {
2409 /* Note: MMAP_DIS will be reenabled by start_interface */
2410 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2411 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2412 OPTION_LSW);
2413 val = hp100_inw(OPTION_LSW);
2414
2415 hp100_page(MAC_CTRL);
2416 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2417
2418 if (!(val & HP100_HW_RST))
2419 return; /* If reset, imm. return ... */
2420 /* ... else: busy wait until idle */
2421 for (val = 0; val < 6000; val++)
2422 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2423 hp100_page(PERFORMANCE);
2424 return;
2425 }
2426 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2427 hp100_page(PERFORMANCE);
2428 }
2429 }
2430
2431 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2432 {
2433 int i;
2434 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2435
2436 #ifdef HP100_DEBUG_B
2437 hp100_outw(0x4222, TRACE);
2438 #endif
2439
2440 hp100_page(EEPROM_CTRL);
2441 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2442 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2443 for (i = 0; i < 10000; i++)
2444 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2445 return;
2446 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2447 }
2448
2449 /* Sense connection status.
2450 * return values: LAN_10 - Connected to 10Mbit/s network
2451 * LAN_100 - Connected to 100Mbit/s network
2452 * LAN_ERR - not connected or 100Mbit/s Hub down
2453 */
2454 static int hp100_sense_lan(struct net_device *dev)
2455 {
2456 int ioaddr = dev->base_addr;
2457 u_short val_VG, val_10;
2458 struct hp100_private *lp = netdev_priv(dev);
2459
2460 #ifdef HP100_DEBUG_B
2461 hp100_outw(0x4223, TRACE);
2462 #endif
2463
2464 hp100_page(MAC_CTRL);
2465 val_10 = hp100_inb(10_LAN_CFG_1);
2466 val_VG = hp100_inb(VG_LAN_CFG_1);
2467 hp100_page(PERFORMANCE);
2468 #ifdef HP100_DEBUG
2469 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2470 dev->name, val_VG, val_10);
2471 #endif
2472
2473 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2474 return HP100_LAN_10;
2475
2476 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2477 /*
2478 * This can be overriden by dos utility, so if this has no effect,
2479 * perhaps you need to download that utility from HP and set card
2480 * back to "auto detect".
2481 */
2482 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2483 hp100_page(MAC_CTRL);
2484 hp100_outb(val_10, 10_LAN_CFG_1);
2485 hp100_page(PERFORMANCE);
2486 return HP100_LAN_COAX;
2487 }
2488
2489 /* Those cards don't have a 100 Mbit connector */
2490 if ( !strcmp(lp->id, "HWP1920") ||
2491 (lp->pci_dev &&
2492 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2493 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2494 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2495 return HP100_LAN_ERR;
2496
2497 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2498 return HP100_LAN_100;
2499 return HP100_LAN_ERR;
2500 }
2501
2502 static int hp100_down_vg_link(struct net_device *dev)
2503 {
2504 struct hp100_private *lp = netdev_priv(dev);
2505 int ioaddr = dev->base_addr;
2506 unsigned long time;
2507 long savelan, newlan;
2508
2509 #ifdef HP100_DEBUG_B
2510 hp100_outw(0x4224, TRACE);
2511 printk("hp100: %s: down_vg_link\n", dev->name);
2512 #endif
2513
2514 hp100_page(MAC_CTRL);
2515 time = jiffies + (HZ / 4);
2516 do {
2517 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2518 break;
2519 if (!in_interrupt())
2520 schedule_timeout_interruptible(1);
2521 } while (time_after(time, jiffies));
2522
2523 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2524 return 0;
2525
2526 /* Drop the VG Link by clearing the link up cmd and load addr. */
2527
2528 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2529 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2530
2531 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2532 time = jiffies + (HZ / 2);
2533 do {
2534 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2535 break;
2536 if (!in_interrupt())
2537 schedule_timeout_interruptible(1);
2538 } while (time_after(time, jiffies));
2539
2540 #ifdef HP100_DEBUG
2541 if (time_after_eq(jiffies, time))
2542 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2543 #endif
2544
2545 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2546 /* logout under traffic (even though all the status bits are cleared), */
2547 /* do this workaround to get the Rev 1 MAC in its idle state */
2548 if (lp->chip == HP100_CHIPID_LASSEN) {
2549 /* Reset VG MAC to insure it leaves the logoff state even if */
2550 /* the Hub is still emitting tones */
2551 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2552 udelay(1500); /* wait for >1ms */
2553 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2554 udelay(1500);
2555 }
2556
2557 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2558 /* to get the VG mac to full reset. This is not req.d with later chips */
2559 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2560 /* selected again! This will be left to the connect hub function to */
2561 /* perform if desired. */
2562 if (lp->chip == HP100_CHIPID_LASSEN) {
2563 /* Have to write to 10 and 100VG control registers simultaneously */
2564 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2565 newlan &= ~(HP100_VG_SEL << 16);
2566 newlan |= (HP100_DOT3_MAC) << 8;
2567 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2568 hp100_outl(newlan, 10_LAN_CFG_1);
2569
2570 /* Conditionally stall for 5sec on VG selected. */
2571 time = jiffies + (HZ * 5);
2572 do {
2573 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2574 break;
2575 if (!in_interrupt())
2576 schedule_timeout_interruptible(1);
2577 } while (time_after(time, jiffies));
2578
2579 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2580 hp100_outl(savelan, 10_LAN_CFG_1);
2581 }
2582
2583 time = jiffies + (3 * HZ); /* Timeout 3s */
2584 do {
2585 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2586 break;
2587 if (!in_interrupt())
2588 schedule_timeout_interruptible(1);
2589 } while (time_after(time, jiffies));
2590
2591 if (time_before_eq(time, jiffies)) {
2592 #ifdef HP100_DEBUG
2593 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2594 #endif
2595 return -EIO;
2596 }
2597
2598 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2599 do {
2600 if (!in_interrupt())
2601 schedule_timeout_interruptible(1);
2602 } while (time_after(time, jiffies));
2603
2604 return 0;
2605 }
2606
2607 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2608 {
2609 int ioaddr = dev->base_addr;
2610 struct hp100_private *lp = netdev_priv(dev);
2611 u_short val = 0;
2612 unsigned long time;
2613 int startst;
2614
2615 #ifdef HP100_DEBUG_B
2616 hp100_outw(0x4225, TRACE);
2617 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2618 #endif
2619
2620 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2621 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2622 * promiscuous mode change)
2623 */
2624 hp100_page(MAC_CTRL);
2625 startst = hp100_inb(VG_LAN_CFG_1);
2626 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2627 #ifdef HP100_DEBUG_TRAINING
2628 printk("hp100: %s: Start training\n", dev->name);
2629 #endif
2630
2631 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2632 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2633
2634 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2635 /* entry then temporarily put them into force 100Mbit mode */
2636 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2637 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2638
2639 /* Drop the VG link by zeroing Link Up Command and Load Address */
2640 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2641
2642 #ifdef HP100_DEBUG_TRAINING
2643 printk("hp100: %s: Bring down the link\n", dev->name);
2644 #endif
2645
2646 /* Wait for link to drop */
2647 time = jiffies + (HZ / 10);
2648 do {
2649 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2650 break;
2651 if (!in_interrupt())
2652 schedule_timeout_interruptible(1);
2653 } while (time_after(time, jiffies));
2654
2655 /* Start an addressed training and optionally request promiscuous port */
2656 if ((dev->flags) & IFF_PROMISC) {
2657 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2658 if (lp->chip == HP100_CHIPID_LASSEN)
2659 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2660 } else {
2661 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2662 /* For ETR parts we need to reset the prom. bit in the training
2663 * register, otherwise promiscious mode won't be disabled.
2664 */
2665 if (lp->chip == HP100_CHIPID_LASSEN) {
2666 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2667 }
2668 }
2669
2670 /* With ETR parts, frame format request bits can be set. */
2671 if (lp->chip == HP100_CHIPID_LASSEN)
2672 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2673
2674 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2675
2676 /* Note: Next wait could be omitted for Hood and earlier chips under */
2677 /* certain circumstances */
2678 /* TODO: check if hood/earlier and skip wait. */
2679
2680 /* Wait for either short timeout for VG tones or long for login */
2681 /* Wait for the card hardware to signalise link cable status ok... */
2682 hp100_page(MAC_CTRL);
2683 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2684 do {
2685 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2686 break;
2687 if (!in_interrupt())
2688 schedule_timeout_interruptible(1);
2689 } while (time_before(jiffies, time));
2690
2691 if (time_after_eq(jiffies, time)) {
2692 #ifdef HP100_DEBUG_TRAINING
2693 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2694 #endif
2695 } else {
2696 #ifdef HP100_DEBUG_TRAINING
2697 printk
2698 ("hp100: %s: HUB tones detected. Trying to train.\n",
2699 dev->name);
2700 #endif
2701
2702 time = jiffies + (2 * HZ); /* again a timeout */
2703 do {
2704 val = hp100_inb(VG_LAN_CFG_1);
2705 if ((val & (HP100_LINK_UP_ST))) {
2706 #ifdef HP100_DEBUG_TRAINING
2707 printk("hp100: %s: Passed training.\n", dev->name);
2708 #endif
2709 break;
2710 }
2711 if (!in_interrupt())
2712 schedule_timeout_interruptible(1);
2713 } while (time_after(time, jiffies));
2714 }
2715
2716 /* If LINK_UP_ST is set, then we are logged into the hub. */
2717 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2718 #ifdef HP100_DEBUG_TRAINING
2719 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2720 if (lp->chip == HP100_CHIPID_LASSEN) {
2721 val = hp100_inw(TRAIN_ALLOW);
2722 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2723 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2724 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2725 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2726 }
2727 #endif
2728 } else {
2729 /* If LINK_UP_ST is not set, login was not successful */
2730 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2731 if (lp->chip == HP100_CHIPID_LASSEN) {
2732 /* Check allowed Register to find out why there is a problem. */
2733 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2734 #ifdef HP100_DEBUG_TRAINING
2735 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2736 #endif
2737 if (val & HP100_MALLOW_ACCDENIED)
2738 printk("hp100: %s: HUB access denied.\n", dev->name);
2739 if (val & HP100_MALLOW_CONFIGURE)
2740 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2741 if (val & HP100_MALLOW_DUPADDR)
2742 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2743 }
2744 }
2745
2746 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2747 /* to auto-select mode */
2748
2749 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2750 hp100_page(MAC_CTRL);
2751 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2752 }
2753
2754 val = hp100_inb(VG_LAN_CFG_1);
2755
2756 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2757 hp100_page(PERFORMANCE);
2758 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2759
2760 if (val & HP100_LINK_UP_ST)
2761 return (0); /* login was ok */
2762 else {
2763 printk("hp100: %s: Training failed.\n", dev->name);
2764 hp100_down_vg_link(dev);
2765 return -EIO;
2766 }
2767 }
2768 /* no forced relogin & already link there->no training. */
2769 return -EIO;
2770 }
2771
2772 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2773 {
2774 int ioaddr = dev->base_addr;
2775 struct hp100_private *lp = netdev_priv(dev);
2776
2777 #ifdef HP100_DEBUG_B
2778 hp100_outw(0x4226, TRACE);
2779 printk("hp100: %s: cascade_reset\n", dev->name);
2780 #endif
2781
2782 if (enable) {
2783 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2784 if (lp->chip == HP100_CHIPID_LASSEN) {
2785 /* Lassen requires a PCI transmit fifo reset */
2786 hp100_page(HW_MAP);
2787 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2788 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2789 /* Wait for min. 300 ns */
2790 /* we can't use jiffies here, because it may be */
2791 /* that we have disabled the timer... */
2792 udelay(400);
2793 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2794 hp100_page(PERFORMANCE);
2795 }
2796 } else { /* bring out of reset */
2797 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2798 udelay(400);
2799 hp100_page(PERFORMANCE);
2800 }
2801 }
2802
2803 #ifdef HP100_DEBUG
2804 void hp100_RegisterDump(struct net_device *dev)
2805 {
2806 int ioaddr = dev->base_addr;
2807 int Page;
2808 int Register;
2809
2810 /* Dump common registers */
2811 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2812 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2813 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2814 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2815 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2816
2817 /* Dump paged registers */
2818 for (Page = 0; Page < 8; Page++) {
2819 /* Dump registers */
2820 printk("page: 0x%.2x\n", Page);
2821 outw(Page, ioaddr + 0x02);
2822 for (Register = 0x8; Register < 0x22; Register += 2) {
2823 /* Display Register contents except data port */
2824 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2825 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2826 }
2827 }
2828 }
2829 hp100_page(PERFORMANCE);
2830 }
2831 #endif
2832
2833
2834 static void cleanup_dev(struct net_device *d)
2835 {
2836 struct hp100_private *p = netdev_priv(d);
2837
2838 unregister_netdev(d);
2839 release_region(d->base_addr, HP100_REGION_SIZE);
2840
2841 if (p->mode == 1) /* busmaster */
2842 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2843 p->page_vaddr_algn,
2844 virt_to_whatever(d, p->page_vaddr_algn));
2845 if (p->mem_ptr_virt)
2846 iounmap(p->mem_ptr_virt);
2847
2848 free_netdev(d);
2849 }
2850
2851 #ifdef CONFIG_EISA
2852 static int __init hp100_eisa_probe (struct device *gendev)
2853 {
2854 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2855 struct eisa_device *edev = to_eisa_device(gendev);
2856 int err;
2857
2858 if (!dev)
2859 return -ENOMEM;
2860
2861 SET_MODULE_OWNER(dev);
2862 SET_NETDEV_DEV(dev, &edev->dev);
2863
2864 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2865 if (err)
2866 goto out1;
2867
2868 #ifdef HP100_DEBUG
2869 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2870 dev->base_addr);
2871 #endif
2872 gendev->driver_data = dev;
2873 return 0;
2874 out1:
2875 free_netdev(dev);
2876 return err;
2877 }
2878
2879 static int __devexit hp100_eisa_remove (struct device *gendev)
2880 {
2881 struct net_device *dev = gendev->driver_data;
2882 cleanup_dev(dev);
2883 return 0;
2884 }
2885
2886 static struct eisa_driver hp100_eisa_driver = {
2887 .id_table = hp100_eisa_tbl,
2888 .driver = {
2889 .name = "hp100",
2890 .probe = hp100_eisa_probe,
2891 .remove = __devexit_p (hp100_eisa_remove),
2892 }
2893 };
2894 #endif
2895
2896 #ifdef CONFIG_PCI
2897 static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2898 const struct pci_device_id *ent)
2899 {
2900 struct net_device *dev;
2901 int ioaddr;
2902 u_short pci_command;
2903 int err;
2904
2905 if (pci_enable_device(pdev))
2906 return -ENODEV;
2907
2908 dev = alloc_etherdev(sizeof(struct hp100_private));
2909 if (!dev) {
2910 err = -ENOMEM;
2911 goto out0;
2912 }
2913
2914 SET_MODULE_OWNER(dev);
2915 SET_NETDEV_DEV(dev, &pdev->dev);
2916
2917 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2918 if (!(pci_command & PCI_COMMAND_IO)) {
2919 #ifdef HP100_DEBUG
2920 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2921 #endif
2922 pci_command |= PCI_COMMAND_IO;
2923 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2924 }
2925
2926 if (!(pci_command & PCI_COMMAND_MASTER)) {
2927 #ifdef HP100_DEBUG
2928 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2929 #endif
2930 pci_command |= PCI_COMMAND_MASTER;
2931 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2932 }
2933
2934 ioaddr = pci_resource_start(pdev, 0);
2935 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2936 if (err)
2937 goto out1;
2938
2939 #ifdef HP100_DEBUG
2940 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2941 #endif
2942 pci_set_drvdata(pdev, dev);
2943 return 0;
2944 out1:
2945 free_netdev(dev);
2946 out0:
2947 pci_disable_device(pdev);
2948 return err;
2949 }
2950
2951 static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2952 {
2953 struct net_device *dev = pci_get_drvdata(pdev);
2954
2955 cleanup_dev(dev);
2956 pci_disable_device(pdev);
2957 }
2958
2959
2960 static struct pci_driver hp100_pci_driver = {
2961 .name = "hp100",
2962 .id_table = hp100_pci_tbl,
2963 .probe = hp100_pci_probe,
2964 .remove = __devexit_p(hp100_pci_remove),
2965 };
2966 #endif
2967
2968 /*
2969 * module section
2970 */
2971
2972 MODULE_LICENSE("GPL");
2973 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, "
2974 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2975 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2976
2977 /*
2978 * Note: to register three isa devices, use:
2979 * option hp100 hp100_port=0,0,0
2980 * to register one card at io 0x280 as eth239, use:
2981 * option hp100 hp100_port=0x280
2982 */
2983 #if defined(MODULE) && defined(CONFIG_ISA)
2984 #define HP100_DEVICES 5
2985 /* Parameters set by insmod */
2986 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2987 module_param_array(hp100_port, int, NULL, 0);
2988
2989 /* List of devices */
2990 static struct net_device *hp100_devlist[HP100_DEVICES];
2991
2992 static int __init hp100_isa_init(void)
2993 {
2994 struct net_device *dev;
2995 int i, err, cards = 0;
2996
2997 /* Don't autoprobe ISA bus */
2998 if (hp100_port[0] == 0)
2999 return -ENODEV;
3000
3001 /* Loop on all possible base addresses */
3002 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
3003 dev = alloc_etherdev(sizeof(struct hp100_private));
3004 if (!dev) {
3005 printk(KERN_WARNING "hp100: no memory for network device\n");
3006 while (cards > 0)
3007 cleanup_dev(hp100_devlist[--cards]);
3008
3009 return -ENOMEM;
3010 }
3011 SET_MODULE_OWNER(dev);
3012
3013 err = hp100_isa_probe(dev, hp100_port[i]);
3014 if (!err)
3015 hp100_devlist[cards++] = dev;
3016 else
3017 free_netdev(dev);
3018 }
3019
3020 return cards > 0 ? 0 : -ENODEV;
3021 }
3022
3023 static void __exit hp100_isa_cleanup(void)
3024 {
3025 int i;
3026
3027 for (i = 0; i < HP100_DEVICES; i++) {
3028 struct net_device *dev = hp100_devlist[i];
3029 if (dev)
3030 cleanup_dev(dev);
3031 }
3032 }
3033 #else
3034 #define hp100_isa_init() (0)
3035 #define hp100_isa_cleanup() do { } while(0)
3036 #endif
3037
3038 static int __init hp100_module_init(void)
3039 {
3040 int err;
3041
3042 err = hp100_isa_init();
3043 if (err && err != -ENODEV)
3044 goto out;
3045 #ifdef CONFIG_EISA
3046 err = eisa_driver_register(&hp100_eisa_driver);
3047 if (err && err != -ENODEV)
3048 goto out2;
3049 #endif
3050 #ifdef CONFIG_PCI
3051 err = pci_module_init(&hp100_pci_driver);
3052 if (err && err != -ENODEV)
3053 goto out3;
3054 #endif
3055 out:
3056 return err;
3057 out3:
3058 #ifdef CONFIG_EISA
3059 eisa_driver_unregister (&hp100_eisa_driver);
3060 out2:
3061 #endif
3062 hp100_isa_cleanup();
3063 goto out;
3064 }
3065
3066
3067 static void __exit hp100_module_exit(void)
3068 {
3069 hp100_isa_cleanup();
3070 #ifdef CONFIG_EISA
3071 eisa_driver_unregister (&hp100_eisa_driver);
3072 #endif
3073 #ifdef CONFIG_PCI
3074 pci_unregister_driver (&hp100_pci_driver);
3075 #endif
3076 }
3077
3078 module_init(hp100_module_init)
3079 module_exit(hp100_module_exit)
3080
3081
3082 /*
3083 * Local variables:
3084 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"
3085 * c-indent-level: 2
3086 * tab-width: 8
3087 * End:
3088 */
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