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