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