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