1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 ** hp100.c
4 ** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
5 **
6 ** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 perex Exp perex $
7 **
8 ** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
9 ** Extended for new busmaster capable chipsets by
10 ** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
11 **
12 ** Maintained by: Jaroslav Kysela <perex@perex.cz>
13 **
14 ** This driver has only been tested with
15 ** -- HP J2585B 10/100 Mbit/s PCI Busmaster
16 ** -- HP J2585A 10/100 Mbit/s PCI
17 ** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
18 ** -- HP J2973A 10 Mbit/s PCI 10base-T
19 ** -- HP J2573 10/100 ISA
20 ** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
21 ** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
22 **
23 ** but it should also work with the other CASCADE based adapters.
24 **
25 ** TODO:
26 ** - J2573 seems to hang sometimes when in shared memory mode.
27 ** - Mode for Priority TX
28 ** - Check PCI registers, performance might be improved?
29 ** - To reduce interrupt load in busmaster, one could switch off
30 ** the interrupts that are used to refill the queues whenever the
31 ** queues are filled up to more than a certain threshold.
32 ** - some updates for EISA version of card
33 **
34 **
35 **
36 ** 1.57c -> 1.58
37 ** - used indent to change coding-style
38 ** - added KTI DP-200 EISA ID
39 ** - ioremap is also used for low (<1MB) memory (multi-architecture support)
40 **
41 ** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
42 ** - release resources on failure in init_module
43 **
44 ** 1.57 -> 1.57b - Jean II
45 ** - fix spinlocks, SMP is now working !
46 **
47 ** 1.56 -> 1.57
48 ** - updates for new PCI interface for 2.1 kernels
49 **
50 ** 1.55 -> 1.56
51 ** - removed printk in misc. interrupt and update statistics to allow
52 ** monitoring of card status
53 ** - timing changes in xmit routines, relogin to 100VG hub added when
54 ** driver does reset
55 ** - included fix for Compex FreedomLine PCI adapter
56 **
57 ** 1.54 -> 1.55
58 ** - fixed bad initialization in init_module
59 ** - added Compex FreedomLine adapter
60 ** - some fixes in card initialization
61 **
62 ** 1.53 -> 1.54
63 ** - added hardware multicast filter support (doesn't work)
64 ** - little changes in hp100_sense_lan routine
65 ** - added support for Coax and AUI (J2970)
66 ** - fix for multiple cards and hp100_mode parameter (insmod)
67 ** - fix for shared IRQ
68 **
69 ** 1.52 -> 1.53
70 ** - fixed bug in multicast support
71 **
72 */
73
74 #define HP100_DEFAULT_PRIORITY_TX 0
75
76 #undef HP100_DEBUG
77 #undef HP100_DEBUG_B /* Trace */
78 #undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
79
80 #undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
81 #undef HP100_DEBUG_TX
82 #undef HP100_DEBUG_IRQ
83 #undef HP100_DEBUG_RX
84
85 #undef HP100_MULTICAST_FILTER /* Need to be debugged... */
86
87 #include <linux/module.h>
88 #include <linux/kernel.h>
89 #include <linux/sched.h>
90 #include <linux/string.h>
91 #include <linux/errno.h>
92 #include <linux/ioport.h>
93 #include <linux/interrupt.h>
94 #include <linux/eisa.h>
95 #include <linux/pci.h>
96 #include <linux/dma-mapping.h>
97 #include <linux/spinlock.h>
98 #include <linux/netdevice.h>
99 #include <linux/etherdevice.h>
100 #include <linux/skbuff.h>
101 #include <linux/types.h>
102 #include <linux/delay.h>
103 #include <linux/init.h>
104 #include <linux/bitops.h>
105 #include <linux/jiffies.h>
106
107 #include <asm/io.h>
108
109 #include "hp100.h"
110
111 /*
112 * defines
113 */
114
115 #define HP100_BUS_ISA 0
116 #define HP100_BUS_EISA 1
117 #define HP100_BUS_PCI 2
118
119 #define HP100_REGION_SIZE 0x20 /* for ioports */
120 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
121
122 #define HP100_MAX_PACKET_SIZE (1536+4)
123 #define HP100_MIN_PACKET_SIZE 60
124
125 #ifndef HP100_DEFAULT_RX_RATIO
126 /* default - 75% onboard memory on the card are used for RX packets */
127 #define HP100_DEFAULT_RX_RATIO 75
128 #endif
129
130 #ifndef HP100_DEFAULT_PRIORITY_TX
131 /* default - don't enable transmit outgoing packets as priority */
132 #define HP100_DEFAULT_PRIORITY_TX 0
133 #endif
134
135 /*
136 * structures
137 */
138
139 struct hp100_private {
140 spinlock_t lock;
141 char id[HP100_SIG_LEN];
142 u_short chip;
143 u_short soft_model;
144 u_int memory_size;
145 u_int virt_memory_size;
146 u_short rx_ratio; /* 1 - 99 */
147 u_short priority_tx; /* != 0 - priority tx */
148 u_short mode; /* PIO, Shared Mem or Busmaster */
149 u_char bus;
150 struct pci_dev *pci_dev;
151 short mem_mapped; /* memory mapped access */
152 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
153 unsigned long mem_ptr_phys; /* physical memory mapped area */
154 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
155 int hub_status; /* was login to hub successful? */
156 u_char mac1_mode;
157 u_char mac2_mode;
158 u_char hash_bytes[8];
159
160 /* Rings for busmaster mode: */
161 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
162 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
163 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
164 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
165
166 hp100_ring_t rxring[MAX_RX_PDL];
167 hp100_ring_t txring[MAX_TX_PDL];
168
169 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
170 u_long whatever_offset; /* Offset to bus/phys/dma address */
171 int rxrcommit; /* # Rx PDLs committed to adapter */
172 int txrcommit; /* # Tx PDLs committed to adapter */
173 };
174
175 /*
176 * variables
177 */
178 #ifdef CONFIG_ISA
179 static const char *hp100_isa_tbl[] = {
180 "HWPF150", /* HP J2573 rev A */
181 "HWP1950", /* HP J2573 */
182 };
183 #endif
184
185 static const struct eisa_device_id hp100_eisa_tbl[] = {
186 { "HWPF180" }, /* HP J2577 rev A */
187 { "HWP1920" }, /* HP 27248B */
188 { "HWP1940" }, /* HP J2577 */
189 { "HWP1990" }, /* HP J2577 */
190 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
191 { "CPX0401" }, /* FreedomLine 100/VG */
192 { "" } /* Mandatory final entry ! */
193 };
194 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
195
196 static const struct pci_device_id hp100_pci_tbl[] = {
197 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
198 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
199 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
200 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
201 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
202 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
203 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
204 {} /* Terminating entry */
205 };
206 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
207
208 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
209 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
210 static int hp100_mode = 1;
211
212 module_param(hp100_rx_ratio, int, 0);
213 module_param(hp100_priority_tx, int, 0);
214 module_param(hp100_mode, int, 0);
215
216 /*
217 * prototypes
218 */
219
220 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
221 struct pci_dev *pci_dev);
222
223
224 static int hp100_open(struct net_device *dev);
225 static int hp100_close(struct net_device *dev);
226 static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
227 struct net_device *dev);
228 static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
229 struct net_device *dev);
230 static void hp100_rx(struct net_device *dev);
231 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
232 static void hp100_misc_interrupt(struct net_device *dev);
233 static void hp100_update_stats(struct net_device *dev);
234 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
235 static void hp100_set_multicast_list(struct net_device *dev);
236 static irqreturn_t hp100_interrupt(int irq, void *dev_id);
237 static void hp100_start_interface(struct net_device *dev);
238 static void hp100_stop_interface(struct net_device *dev);
239 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
240 static int hp100_sense_lan(struct net_device *dev);
241 static int hp100_login_to_vg_hub(struct net_device *dev,
242 u_short force_relogin);
243 static int hp100_down_vg_link(struct net_device *dev);
244 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
245 static void hp100_BM_shutdown(struct net_device *dev);
246 static void hp100_mmuinit(struct net_device *dev);
247 static void hp100_init_pdls(struct net_device *dev);
248 static int hp100_init_rxpdl(struct net_device *dev,
249 register hp100_ring_t * ringptr,
250 register u_int * pdlptr);
251 static int hp100_init_txpdl(struct net_device *dev,
252 register hp100_ring_t * ringptr,
253 register u_int * pdlptr);
254 static void hp100_rxfill(struct net_device *dev);
255 static void hp100_hwinit(struct net_device *dev);
256 static void hp100_clean_txring(struct net_device *dev);
257 #ifdef HP100_DEBUG
258 static void hp100_RegisterDump(struct net_device *dev);
259 #endif
260
261 /* Conversion to new PCI API :
262 * Convert an address in a kernel buffer to a bus/phys/dma address.
263 * This work *only* for memory fragments part of lp->page_vaddr,
264 * because it was properly DMA allocated via pci_alloc_consistent(),
265 * so we just need to "retrieve" the original mapping to bus/phys/dma
266 * address - Jean II */
virt_to_whatever(struct net_device * dev,u32 * ptr)267 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
268 {
269 struct hp100_private *lp = netdev_priv(dev);
270 return ((u_long) ptr) + lp->whatever_offset;
271 }
272
pdl_map_data(struct hp100_private * lp,void * data)273 static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
274 {
275 return pci_map_single(lp->pci_dev, data,
276 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
277 }
278
279 /* TODO: This function should not really be needed in a good design... */
wait(void)280 static void wait(void)
281 {
282 mdelay(1);
283 }
284
285 /*
286 * probe functions
287 * These functions should - if possible - avoid doing write operations
288 * since this could cause problems when the card is not installed.
289 */
290
291 /*
292 * Read board id and convert to string.
293 * Effectively same code as decode_eisa_sig
294 */
hp100_read_id(int ioaddr)295 static const char *hp100_read_id(int ioaddr)
296 {
297 int i;
298 static char str[HP100_SIG_LEN];
299 unsigned char sig[4], sum;
300 unsigned short rev;
301
302 hp100_page(ID_MAC_ADDR);
303 sum = 0;
304 for (i = 0; i < 4; i++) {
305 sig[i] = hp100_inb(BOARD_ID + i);
306 sum += sig[i];
307 }
308
309 sum += hp100_inb(BOARD_ID + i);
310 if (sum != 0xff)
311 return NULL; /* bad checksum */
312
313 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
314 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
315 str[2] = (sig[1] & 0x1f) + ('A' - 1);
316 rev = (sig[2] << 8) | sig[3];
317 sprintf(str + 3, "%04X", rev);
318
319 return str;
320 }
321
322 #ifdef CONFIG_ISA
hp100_isa_probe1(struct net_device * dev,int ioaddr)323 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
324 {
325 const char *sig;
326 int i;
327
328 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
329 goto err;
330
331 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
332 release_region(ioaddr, HP100_REGION_SIZE);
333 goto err;
334 }
335
336 sig = hp100_read_id(ioaddr);
337 release_region(ioaddr, HP100_REGION_SIZE);
338
339 if (sig == NULL)
340 goto err;
341
342 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
343 if (!strcmp(hp100_isa_tbl[i], sig))
344 break;
345
346 }
347
348 if (i < ARRAY_SIZE(hp100_isa_tbl))
349 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
350 err:
351 return -ENODEV;
352
353 }
354 /*
355 * Probe for ISA board.
356 * EISA and PCI are handled by device infrastructure.
357 */
358
hp100_isa_probe(struct net_device * dev,int addr)359 static int __init hp100_isa_probe(struct net_device *dev, int addr)
360 {
361 int err = -ENODEV;
362
363 /* Probe for a specific ISA address */
364 if (addr > 0xff && addr < 0x400)
365 err = hp100_isa_probe1(dev, addr);
366
367 else if (addr != 0)
368 err = -ENXIO;
369
370 else {
371 /* Probe all ISA possible port regions */
372 for (addr = 0x100; addr < 0x400; addr += 0x20) {
373 err = hp100_isa_probe1(dev, addr);
374 if (!err)
375 break;
376 }
377 }
378 return err;
379 }
380 #endif /* CONFIG_ISA */
381
382 #if !defined(MODULE) && defined(CONFIG_ISA)
hp100_probe(int unit)383 struct net_device * __init hp100_probe(int unit)
384 {
385 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
386 int err;
387
388 if (!dev)
389 return ERR_PTR(-ENODEV);
390
391 #ifdef HP100_DEBUG_B
392 hp100_outw(0x4200, TRACE);
393 printk("hp100: %s: probe\n", dev->name);
394 #endif
395
396 if (unit >= 0) {
397 sprintf(dev->name, "eth%d", unit);
398 netdev_boot_setup_check(dev);
399 }
400
401 err = hp100_isa_probe(dev, dev->base_addr);
402 if (err)
403 goto out;
404
405 return dev;
406 out:
407 free_netdev(dev);
408 return ERR_PTR(err);
409 }
410 #endif /* !MODULE && CONFIG_ISA */
411
412 static const struct net_device_ops hp100_bm_netdev_ops = {
413 .ndo_open = hp100_open,
414 .ndo_stop = hp100_close,
415 .ndo_start_xmit = hp100_start_xmit_bm,
416 .ndo_get_stats = hp100_get_stats,
417 .ndo_set_rx_mode = hp100_set_multicast_list,
418 .ndo_set_mac_address = eth_mac_addr,
419 .ndo_validate_addr = eth_validate_addr,
420 };
421
422 static const struct net_device_ops hp100_netdev_ops = {
423 .ndo_open = hp100_open,
424 .ndo_stop = hp100_close,
425 .ndo_start_xmit = hp100_start_xmit,
426 .ndo_get_stats = hp100_get_stats,
427 .ndo_set_rx_mode = hp100_set_multicast_list,
428 .ndo_set_mac_address = eth_mac_addr,
429 .ndo_validate_addr = eth_validate_addr,
430 };
431
hp100_probe1(struct net_device * dev,int ioaddr,u_char bus,struct pci_dev * pci_dev)432 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
433 struct pci_dev *pci_dev)
434 {
435 int i;
436 int err = -ENODEV;
437 const char *eid;
438 u_int chip;
439 u_char uc;
440 u_int memory_size = 0, virt_memory_size = 0;
441 u_short local_mode, lsw;
442 short mem_mapped;
443 unsigned long mem_ptr_phys;
444 void __iomem *mem_ptr_virt;
445 struct hp100_private *lp;
446
447 #ifdef HP100_DEBUG_B
448 hp100_outw(0x4201, TRACE);
449 printk("hp100: %s: probe1\n", dev->name);
450 #endif
451
452 /* memory region for programmed i/o */
453 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
454 goto out1;
455
456 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
457 goto out2;
458
459 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
460 #ifdef HP100_DEBUG
461 if (chip == HP100_CHIPID_SHASTA)
462 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
463 else if (chip == HP100_CHIPID_RAINIER)
464 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
465 else if (chip == HP100_CHIPID_LASSEN)
466 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
467 else
468 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
469 #endif
470
471 dev->base_addr = ioaddr;
472
473 eid = hp100_read_id(ioaddr);
474 if (eid == NULL) { /* bad checksum? */
475 printk(KERN_WARNING "%s: bad ID checksum at base port 0x%x\n",
476 __func__, ioaddr);
477 goto out2;
478 }
479
480 hp100_page(ID_MAC_ADDR);
481 for (i = uc = 0; i < 7; i++)
482 uc += hp100_inb(LAN_ADDR + i);
483 if (uc != 0xff) {
484 printk(KERN_WARNING
485 "%s: bad lan address checksum at port 0x%x)\n",
486 __func__, ioaddr);
487 err = -EIO;
488 goto out2;
489 }
490
491 /* Make sure, that all registers are correctly updated... */
492
493 hp100_load_eeprom(dev, ioaddr);
494 wait();
495
496 /*
497 * Determine driver operation mode
498 *
499 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
500 * force driver modes:
501 * hp100_mode=1 -> default, use busmaster mode if configured.
502 * hp100_mode=2 -> enable shared memory mode
503 * hp100_mode=3 -> force use of i/o mapped mode.
504 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
505 */
506
507 /*
508 * LSW values:
509 * 0x2278 -> J2585B, PnP shared memory mode
510 * 0x2270 -> J2585B, shared memory mode, 0xdc000
511 * 0xa23c -> J2585B, I/O mapped mode
512 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
513 * 0x2220 -> EISA HP, I/O (Shasta Chip)
514 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
515 */
516
517 #if 0
518 local_mode = 0x2270;
519 hp100_outw(0xfefe, OPTION_LSW);
520 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
521 #endif
522
523 /* hp100_mode value maybe used in future by another card */
524 local_mode = hp100_mode;
525 if (local_mode < 1 || local_mode > 4)
526 local_mode = 1; /* default */
527 #ifdef HP100_DEBUG
528 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
529 hp100_inw(OPTION_LSW));
530 #endif
531
532 if (local_mode == 3) {
533 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
534 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
535 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
536 printk("hp100: IO mapped mode forced.\n");
537 } else if (local_mode == 2) {
538 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
539 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
540 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
541 printk("hp100: Shared memory mode requested.\n");
542 } else if (local_mode == 4) {
543 if (chip == HP100_CHIPID_LASSEN) {
544 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
545 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
546 printk("hp100: Busmaster mode requested.\n");
547 }
548 local_mode = 1;
549 }
550
551 if (local_mode == 1) { /* default behaviour */
552 lsw = hp100_inw(OPTION_LSW);
553
554 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
555 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
556 #ifdef HP100_DEBUG
557 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
558 #endif
559 local_mode = 3;
560 } else if (chip == HP100_CHIPID_LASSEN &&
561 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
562 /* Conversion to new PCI API :
563 * I don't have the doc, but I assume that the card
564 * can map the full 32bit address space.
565 * Also, we can have EISA Busmaster cards (not tested),
566 * so beware !!! - Jean II */
567 if((bus == HP100_BUS_PCI) &&
568 (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)))) {
569 /* Gracefully fallback to shared memory */
570 goto busmasterfail;
571 }
572 printk("hp100: Busmaster mode enabled.\n");
573 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
574 } else {
575 busmasterfail:
576 #ifdef HP100_DEBUG
577 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
578 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
579 #endif
580 /* In this case, try shared memory mode */
581 local_mode = 2;
582 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
583 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
584 }
585 }
586 #ifdef HP100_DEBUG
587 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
588 #endif
589
590 /* Check for shared memory on the card, eventually remap it */
591 hp100_page(HW_MAP);
592 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
593 mem_ptr_phys = 0UL;
594 mem_ptr_virt = NULL;
595 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
596 virt_memory_size = 0;
597
598 /* For memory mapped or busmaster mode, we want the memory address */
599 if (mem_mapped || (local_mode == 1)) {
600 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
601 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
602
603 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
604 printk("hp100: Can only use programmed i/o mode.\n");
605 mem_ptr_phys = 0;
606 mem_mapped = 0;
607 local_mode = 3; /* Use programmed i/o */
608 }
609
610 /* We do not need access to shared memory in busmaster mode */
611 /* However in slave mode we need to remap high (>1GB) card memory */
612 if (local_mode != 1) { /* = not busmaster */
613 /* We try with smaller memory sizes, if ioremap fails */
614 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
615 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
616 #ifdef HP100_DEBUG
617 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
618 #endif
619 } else {
620 #ifdef HP100_DEBUG
621 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);
622 #endif
623 break;
624 }
625 }
626
627 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
628 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
629 local_mode = 3;
630 virt_memory_size = 0;
631 }
632 }
633 }
634
635 if (local_mode == 3) { /* io mapped forced */
636 mem_mapped = 0;
637 mem_ptr_phys = 0;
638 mem_ptr_virt = NULL;
639 printk("hp100: Using (slow) programmed i/o mode.\n");
640 }
641
642 /* Initialise the "private" data structure for this card. */
643 lp = netdev_priv(dev);
644
645 spin_lock_init(&lp->lock);
646 strlcpy(lp->id, eid, HP100_SIG_LEN);
647 lp->chip = chip;
648 lp->mode = local_mode;
649 lp->bus = bus;
650 lp->pci_dev = pci_dev;
651 lp->priority_tx = hp100_priority_tx;
652 lp->rx_ratio = hp100_rx_ratio;
653 lp->mem_ptr_phys = mem_ptr_phys;
654 lp->mem_ptr_virt = mem_ptr_virt;
655 hp100_page(ID_MAC_ADDR);
656 lp->soft_model = hp100_inb(SOFT_MODEL);
657 lp->mac1_mode = HP100_MAC1MODE3;
658 lp->mac2_mode = HP100_MAC2MODE3;
659 memset(&lp->hash_bytes, 0x00, 8);
660
661 dev->base_addr = ioaddr;
662
663 lp->memory_size = memory_size;
664 lp->virt_memory_size = virt_memory_size;
665 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
666
667 if (lp->mode == 1) /* busmaster */
668 dev->netdev_ops = &hp100_bm_netdev_ops;
669 else
670 dev->netdev_ops = &hp100_netdev_ops;
671
672 /* Ask the card for which IRQ line it is configured */
673 if (bus == HP100_BUS_PCI) {
674 dev->irq = pci_dev->irq;
675 } else {
676 hp100_page(HW_MAP);
677 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
678 if (dev->irq == 2)
679 dev->irq = 9;
680 }
681
682 if (lp->mode == 1) /* busmaster */
683 dev->dma = 4;
684
685 /* Ask the card for its MAC address and store it for later use. */
686 hp100_page(ID_MAC_ADDR);
687 for (i = uc = 0; i < 6; i++)
688 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
689
690 /* Reset statistics (counters) */
691 hp100_clear_stats(lp, ioaddr);
692
693 /* If busmaster mode is wanted, a dma-capable memory area is needed for
694 * the rx and tx PDLs
695 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
696 * needed for the allocation of the memory area.
697 */
698
699 /* TODO: We do not need this with old cards, where PDLs are stored
700 * in the cards shared memory area. But currently, busmaster has been
701 * implemented/tested only with the lassen chip anyway... */
702 if (lp->mode == 1) { /* busmaster */
703 dma_addr_t page_baddr;
704 /* Get physically continuous memory for TX & RX PDLs */
705 /* Conversion to new PCI API :
706 * Pages are always aligned and zeroed, no need to it ourself.
707 * Doc says should be OK for EISA bus as well - Jean II */
708 lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr);
709 if (!lp->page_vaddr_algn) {
710 err = -ENOMEM;
711 goto out_mem_ptr;
712 }
713 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
714
715 #ifdef HP100_DEBUG_BM
716 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);
717 #endif
718 lp->rxrcommit = lp->txrcommit = 0;
719 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
720 lp->txrhead = lp->txrtail = &(lp->txring[0]);
721 }
722
723 /* Initialise the card. */
724 /* (I'm not really sure if it's a good idea to do this during probing, but
725 * like this it's assured that the lan connection type can be sensed
726 * correctly)
727 */
728 hp100_hwinit(dev);
729
730 /* Try to find out which kind of LAN the card is connected to. */
731 lp->lan_type = hp100_sense_lan(dev);
732
733 /* Print out a message what about what we think we have probed. */
734 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
735 switch (bus) {
736 case HP100_BUS_EISA:
737 printk("EISA");
738 break;
739 case HP100_BUS_PCI:
740 printk("PCI");
741 break;
742 default:
743 printk("ISA");
744 break;
745 }
746 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
747
748 if (lp->mode == 2) { /* memory mapped */
749 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
750 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
751 if (mem_ptr_virt)
752 printk(" (virtual base %p)", mem_ptr_virt);
753 printk(".\n");
754
755 /* Set for info when doing ifconfig */
756 dev->mem_start = mem_ptr_phys;
757 dev->mem_end = mem_ptr_phys + lp->memory_size;
758 }
759
760 printk("hp100: ");
761 if (lp->lan_type != HP100_LAN_ERR)
762 printk("Adapter is attached to ");
763 switch (lp->lan_type) {
764 case HP100_LAN_100:
765 printk("100Mb/s Voice Grade AnyLAN network.\n");
766 break;
767 case HP100_LAN_10:
768 printk("10Mb/s network (10baseT).\n");
769 break;
770 case HP100_LAN_COAX:
771 printk("10Mb/s network (coax).\n");
772 break;
773 default:
774 printk("Warning! Link down.\n");
775 }
776
777 err = register_netdev(dev);
778 if (err)
779 goto out3;
780
781 return 0;
782 out3:
783 if (local_mode == 1)
784 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
785 lp->page_vaddr_algn,
786 virt_to_whatever(dev, lp->page_vaddr_algn));
787 out_mem_ptr:
788 if (mem_ptr_virt)
789 iounmap(mem_ptr_virt);
790 out2:
791 release_region(ioaddr, HP100_REGION_SIZE);
792 out1:
793 return err;
794 }
795
796 /* This procedure puts the card into a stable init state */
hp100_hwinit(struct net_device * dev)797 static void hp100_hwinit(struct net_device *dev)
798 {
799 int ioaddr = dev->base_addr;
800 struct hp100_private *lp = netdev_priv(dev);
801
802 #ifdef HP100_DEBUG_B
803 hp100_outw(0x4202, TRACE);
804 printk("hp100: %s: hwinit\n", dev->name);
805 #endif
806
807 /* Initialise the card. -------------------------------------------- */
808
809 /* Clear all pending Ints and disable Ints */
810 hp100_page(PERFORMANCE);
811 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
812 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
813
814 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
815 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
816
817 if (lp->mode == 1) {
818 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
819 wait();
820 } else {
821 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
822 hp100_cascade_reset(dev, 1);
823 hp100_page(MAC_CTRL);
824 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
825 }
826
827 /* Initiate EEPROM reload */
828 hp100_load_eeprom(dev, 0);
829
830 wait();
831
832 /* Go into reset again. */
833 hp100_cascade_reset(dev, 1);
834
835 /* Set Option Registers to a safe state */
836 hp100_outw(HP100_DEBUG_EN |
837 HP100_RX_HDR |
838 HP100_EE_EN |
839 HP100_BM_WRITE |
840 HP100_BM_READ | HP100_RESET_HB |
841 HP100_FAKE_INT |
842 HP100_INT_EN |
843 HP100_MEM_EN |
844 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
845
846 hp100_outw(HP100_TRI_INT |
847 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
848
849 hp100_outb(HP100_PRIORITY_TX |
850 HP100_ADV_NXT_PKT |
851 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
852
853 /* TODO: Configure MMU for Ram Test. */
854 /* TODO: Ram Test. */
855
856 /* Re-check if adapter is still at same i/o location */
857 /* (If the base i/o in eeprom has been changed but the */
858 /* registers had not been changed, a reload of the eeprom */
859 /* would move the adapter to the address stored in eeprom */
860
861 /* TODO: Code to implement. */
862
863 /* Until here it was code from HWdiscover procedure. */
864 /* Next comes code from mmuinit procedure of SCO BM driver which is
865 * called from HWconfigure in the SCO driver. */
866
867 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
868 * multicast filter...
869 */
870 hp100_mmuinit(dev);
871
872 /* We don't turn the interrupts on here - this is done by start_interface. */
873 wait(); /* TODO: Do we really need this? */
874
875 /* Enable Hardware (e.g. unreset) */
876 hp100_cascade_reset(dev, 0);
877
878 /* ------- initialisation complete ----------- */
879
880 /* Finally try to log in the Hub if there may be a VG connection. */
881 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
882 hp100_login_to_vg_hub(dev, 0); /* relogin */
883
884 }
885
886
887 /*
888 * mmuinit - Reinitialise Cascade MMU and MAC settings.
889 * Note: Must already be in reset and leaves card in reset.
890 */
hp100_mmuinit(struct net_device * dev)891 static void hp100_mmuinit(struct net_device *dev)
892 {
893 int ioaddr = dev->base_addr;
894 struct hp100_private *lp = netdev_priv(dev);
895 int i;
896
897 #ifdef HP100_DEBUG_B
898 hp100_outw(0x4203, TRACE);
899 printk("hp100: %s: mmuinit\n", dev->name);
900 #endif
901
902 #ifdef HP100_DEBUG
903 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
904 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
905 return;
906 }
907 #endif
908
909 /* Make sure IRQs are masked off and ack'ed. */
910 hp100_page(PERFORMANCE);
911 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
912 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
913
914 /*
915 * Enable Hardware
916 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
917 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
918 * - Clear Priority, Advance Pkt and Xmit Cmd
919 */
920
921 hp100_outw(HP100_DEBUG_EN |
922 HP100_RX_HDR |
923 HP100_EE_EN | HP100_RESET_HB |
924 HP100_IO_EN |
925 HP100_FAKE_INT |
926 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
927
928 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
929
930 if (lp->mode == 1) { /* busmaster */
931 hp100_outw(HP100_BM_WRITE |
932 HP100_BM_READ |
933 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
934 } else if (lp->mode == 2) { /* memory mapped */
935 hp100_outw(HP100_BM_WRITE |
936 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
937 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
938 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
939 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
940 } else if (lp->mode == 3) { /* i/o mapped mode */
941 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
942 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
943 }
944
945 hp100_page(HW_MAP);
946 hp100_outb(0, EARLYRXCFG);
947 hp100_outw(0, EARLYTXCFG);
948
949 /*
950 * Enable Bus Master mode
951 */
952 if (lp->mode == 1) { /* busmaster */
953 /* Experimental: Set some PCI configuration bits */
954 hp100_page(HW_MAP);
955 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
956 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
957
958 /* PCI Bus failures should result in a Misc. Interrupt */
959 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
960
961 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
962 hp100_page(HW_MAP);
963 /* Use Burst Mode and switch on PAGE_CK */
964 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
965 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
966 hp100_orb(HP100_BM_PAGE_CK, BM);
967 hp100_orb(HP100_BM_MASTER, BM);
968 } else { /* not busmaster */
969
970 hp100_page(HW_MAP);
971 hp100_andb(~HP100_BM_MASTER, BM);
972 }
973
974 /*
975 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
976 */
977 hp100_page(MMU_CFG);
978 if (lp->mode == 1) { /* only needed for Busmaster */
979 int xmit_stop, recv_stop;
980
981 if ((lp->chip == HP100_CHIPID_RAINIER) ||
982 (lp->chip == HP100_CHIPID_SHASTA)) {
983 int pdl_stop;
984
985 /*
986 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
987 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
988 * to the next higher 1k boundary) bytes for the rx-pdl's
989 * Note: For non-etr chips the transmit stop register must be
990 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
991 */
992 pdl_stop = lp->memory_size;
993 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
994 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
995 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
996 #ifdef HP100_DEBUG_BM
997 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
998 #endif
999 } else {
1000 /* ETR chip (Lassen) in busmaster mode */
1001 xmit_stop = (lp->memory_size) - 1;
1002 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1003 }
1004
1005 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1006 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1007 #ifdef HP100_DEBUG_BM
1008 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1009 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1010 #endif
1011 } else {
1012 /* Slave modes (memory mapped and programmed io) */
1013 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1014 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1015 #ifdef HP100_DEBUG
1016 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1017 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1018 #endif
1019 }
1020
1021 /* Write MAC address into page 1 */
1022 hp100_page(MAC_ADDRESS);
1023 for (i = 0; i < 6; i++)
1024 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1025
1026 /* Zero the multicast hash registers */
1027 for (i = 0; i < 8; i++)
1028 hp100_outb(0x0, HASH_BYTE0 + i);
1029
1030 /* Set up MAC defaults */
1031 hp100_page(MAC_CTRL);
1032
1033 /* Go to LAN Page and zero all filter bits */
1034 /* Zero accept error, accept multicast, accept broadcast and accept */
1035 /* all directed packet bits */
1036 hp100_andb(~(HP100_RX_EN |
1037 HP100_TX_EN |
1038 HP100_ACC_ERRORED |
1039 HP100_ACC_MC |
1040 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1041
1042 hp100_outb(0x00, MAC_CFG_2);
1043
1044 /* Zero the frame format bit. This works around a training bug in the */
1045 /* new hubs. */
1046 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1047
1048 if (lp->priority_tx)
1049 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1050 else
1051 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1052
1053 hp100_outb(HP100_ADV_NXT_PKT |
1054 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1055
1056 /* If busmaster, initialize the PDLs */
1057 if (lp->mode == 1)
1058 hp100_init_pdls(dev);
1059
1060 /* Go to performance page and initialize isr and imr registers */
1061 hp100_page(PERFORMANCE);
1062 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1063 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1064 }
1065
1066 /*
1067 * open/close functions
1068 */
1069
hp100_open(struct net_device * dev)1070 static int hp100_open(struct net_device *dev)
1071 {
1072 struct hp100_private *lp = netdev_priv(dev);
1073 #ifdef HP100_DEBUG_B
1074 int ioaddr = dev->base_addr;
1075 #endif
1076
1077 #ifdef HP100_DEBUG_B
1078 hp100_outw(0x4204, TRACE);
1079 printk("hp100: %s: open\n", dev->name);
1080 #endif
1081
1082 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1083 if (request_irq(dev->irq, hp100_interrupt,
1084 lp->bus == HP100_BUS_PCI || lp->bus ==
1085 HP100_BUS_EISA ? IRQF_SHARED : 0,
1086 dev->name, dev)) {
1087 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1088 return -EAGAIN;
1089 }
1090
1091 netif_trans_update(dev); /* prevent tx timeout */
1092 netif_start_queue(dev);
1093
1094 lp->lan_type = hp100_sense_lan(dev);
1095 lp->mac1_mode = HP100_MAC1MODE3;
1096 lp->mac2_mode = HP100_MAC2MODE3;
1097 memset(&lp->hash_bytes, 0x00, 8);
1098
1099 hp100_stop_interface(dev);
1100
1101 hp100_hwinit(dev);
1102
1103 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1104
1105 return 0;
1106 }
1107
1108 /* The close function is called when the interface is to be brought down */
hp100_close(struct net_device * dev)1109 static int hp100_close(struct net_device *dev)
1110 {
1111 int ioaddr = dev->base_addr;
1112 struct hp100_private *lp = netdev_priv(dev);
1113
1114 #ifdef HP100_DEBUG_B
1115 hp100_outw(0x4205, TRACE);
1116 printk("hp100: %s: close\n", dev->name);
1117 #endif
1118
1119 hp100_page(PERFORMANCE);
1120 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1121
1122 hp100_stop_interface(dev);
1123
1124 if (lp->lan_type == HP100_LAN_100)
1125 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1126
1127 netif_stop_queue(dev);
1128
1129 free_irq(dev->irq, dev);
1130
1131 #ifdef HP100_DEBUG
1132 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1133 hp100_inw(OPTION_LSW));
1134 #endif
1135
1136 return 0;
1137 }
1138
1139
1140 /*
1141 * Configure the PDL Rx rings and LAN
1142 */
hp100_init_pdls(struct net_device * dev)1143 static void hp100_init_pdls(struct net_device *dev)
1144 {
1145 struct hp100_private *lp = netdev_priv(dev);
1146 hp100_ring_t *ringptr;
1147 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1148 int i;
1149
1150 #ifdef HP100_DEBUG_B
1151 int ioaddr = dev->base_addr;
1152 #endif
1153
1154 #ifdef HP100_DEBUG_B
1155 hp100_outw(0x4206, TRACE);
1156 printk("hp100: %s: init pdls\n", dev->name);
1157 #endif
1158
1159 if (!lp->page_vaddr_algn)
1160 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1161 else {
1162 /* pageptr shall point into the DMA accessible memory region */
1163 /* we use this pointer to status the upper limit of allocated */
1164 /* memory in the allocated page. */
1165 /* note: align the pointers to the pci cache line size */
1166 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1167 pageptr = lp->page_vaddr_algn;
1168
1169 lp->rxrcommit = 0;
1170 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1171
1172 /* Initialise Rx Ring */
1173 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1174 lp->rxring[i].next = ringptr;
1175 ringptr = &(lp->rxring[i]);
1176 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1177 }
1178
1179 /* Initialise Tx Ring */
1180 lp->txrcommit = 0;
1181 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1182 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1183 lp->txring[i].next = ringptr;
1184 ringptr = &(lp->txring[i]);
1185 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1186 }
1187 }
1188 }
1189
1190
1191 /* These functions "format" the entries in the pdl structure */
1192 /* They return how much memory the fragments need. */
hp100_init_rxpdl(struct net_device * dev,register hp100_ring_t * ringptr,register u32 * pdlptr)1193 static int hp100_init_rxpdl(struct net_device *dev,
1194 register hp100_ring_t * ringptr,
1195 register u32 * pdlptr)
1196 {
1197 /* pdlptr is starting address for this pdl */
1198
1199 if (0 != (((unsigned long) pdlptr) & 0xf))
1200 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1201 dev->name, (unsigned long) pdlptr);
1202
1203 ringptr->pdl = pdlptr + 1;
1204 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1205 ringptr->skb = NULL;
1206
1207 /*
1208 * Write address and length of first PDL Fragment (which is used for
1209 * storing the RX-Header
1210 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1211 * store this information. (PDH is at offset 0x04)
1212 */
1213 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1214
1215 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1216 *(pdlptr + 3) = 4; /* Length Frag 1 */
1217
1218 return roundup(MAX_RX_FRAG * 2 + 2, 4);
1219 }
1220
1221
hp100_init_txpdl(struct net_device * dev,register hp100_ring_t * ringptr,register u32 * pdlptr)1222 static int hp100_init_txpdl(struct net_device *dev,
1223 register hp100_ring_t * ringptr,
1224 register u32 * pdlptr)
1225 {
1226 if (0 != (((unsigned long) pdlptr) & 0xf))
1227 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1228
1229 ringptr->pdl = pdlptr; /* +1; */
1230 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1231 ringptr->skb = NULL;
1232
1233 return roundup(MAX_TX_FRAG * 2 + 2, 4);
1234 }
1235
1236 /*
1237 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1238 * for possible odd word alignment rounding up to next dword and set PDL
1239 * address for fragment#2
1240 * Returns: 0 if unable to allocate skb_buff
1241 * 1 if successful
1242 */
hp100_build_rx_pdl(hp100_ring_t * ringptr,struct net_device * dev)1243 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1244 struct net_device *dev)
1245 {
1246 #ifdef HP100_DEBUG_B
1247 int ioaddr = dev->base_addr;
1248 #endif
1249 #ifdef HP100_DEBUG_BM
1250 u_int *p;
1251 #endif
1252
1253 #ifdef HP100_DEBUG_B
1254 hp100_outw(0x4207, TRACE);
1255 printk("hp100: %s: build rx pdl\n", dev->name);
1256 #endif
1257
1258 /* Allocate skb buffer of maximum size */
1259 /* Note: This depends on the alloc_skb functions allocating more
1260 * space than requested, i.e. aligning to 16bytes */
1261
1262 ringptr->skb = netdev_alloc_skb(dev, roundup(MAX_ETHER_SIZE + 2, 4));
1263
1264 if (NULL != ringptr->skb) {
1265 /*
1266 * Reserve 2 bytes at the head of the buffer to land the IP header
1267 * on a long word boundary (According to the Network Driver section
1268 * in the Linux KHG, this should help to increase performance.)
1269 */
1270 skb_reserve(ringptr->skb, 2);
1271
1272 ringptr->skb->data = skb_put(ringptr->skb, MAX_ETHER_SIZE);
1273
1274 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1275 /* Note: 1st Fragment is used for the 4 byte packet status
1276 * (receive header). Its PDL entries are set up by init_rxpdl. So
1277 * here we only have to set up the PDL fragment entries for the data
1278 * part. Those 4 bytes will be stored in the DMA memory region
1279 * directly before the PDL.
1280 */
1281 #ifdef HP100_DEBUG_BM
1282 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1283 dev->name, (u_int) ringptr->pdl,
1284 roundup(MAX_ETHER_SIZE + 2, 4),
1285 (unsigned int) ringptr->skb->data);
1286 #endif
1287
1288 /* Conversion to new PCI API : map skbuf data to PCI bus.
1289 * Doc says it's OK for EISA as well - Jean II */
1290 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1291 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1292 ringptr->skb->data);
1293 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1294
1295 #ifdef HP100_DEBUG_BM
1296 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1297 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1298 #endif
1299 return 1;
1300 }
1301 /* else: */
1302 /* alloc_skb failed (no memory) -> still can receive the header
1303 * fragment into PDL memory. make PDL safe by clearing msgptr and
1304 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1305 */
1306 #ifdef HP100_DEBUG_BM
1307 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1308 #endif
1309
1310 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1311
1312 return 0;
1313 }
1314
1315 /*
1316 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1317 *
1318 * Makes assumption that skb's are always contiguous memory areas and
1319 * therefore PDLs contain only 2 physical fragments.
1320 * - While the number of Rx PDLs with buffers is less than maximum
1321 * a. Get a maximum packet size skb
1322 * b. Put the physical address of the buffer into the PDL.
1323 * c. Output physical address of PDL to adapter.
1324 */
hp100_rxfill(struct net_device * dev)1325 static void hp100_rxfill(struct net_device *dev)
1326 {
1327 int ioaddr = dev->base_addr;
1328
1329 struct hp100_private *lp = netdev_priv(dev);
1330 hp100_ring_t *ringptr;
1331
1332 #ifdef HP100_DEBUG_B
1333 hp100_outw(0x4208, TRACE);
1334 printk("hp100: %s: rxfill\n", dev->name);
1335 #endif
1336
1337 hp100_page(PERFORMANCE);
1338
1339 while (lp->rxrcommit < MAX_RX_PDL) {
1340 /*
1341 ** Attempt to get a buffer and build a Rx PDL.
1342 */
1343 ringptr = lp->rxrtail;
1344 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1345 return; /* None available, return */
1346 }
1347
1348 /* Hand this PDL over to the card */
1349 /* Note: This needs performance page selected! */
1350 #ifdef HP100_DEBUG_BM
1351 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1352 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1353 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1354 #endif
1355
1356 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1357
1358 lp->rxrcommit += 1;
1359 lp->rxrtail = ringptr->next;
1360 }
1361 }
1362
1363 /*
1364 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1365 */
1366
hp100_BM_shutdown(struct net_device * dev)1367 static void hp100_BM_shutdown(struct net_device *dev)
1368 {
1369 int ioaddr = dev->base_addr;
1370 struct hp100_private *lp = netdev_priv(dev);
1371 unsigned long time;
1372
1373 #ifdef HP100_DEBUG_B
1374 hp100_outw(0x4209, TRACE);
1375 printk("hp100: %s: bm shutdown\n", dev->name);
1376 #endif
1377
1378 hp100_page(PERFORMANCE);
1379 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1380 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1381
1382 /* Ensure Interrupts are off */
1383 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1384
1385 /* Disable all MAC activity */
1386 hp100_page(MAC_CTRL);
1387 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1388
1389 /* If cascade MMU is not already in reset */
1390 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1391 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1392 * MMU pointers will not be reset out from underneath
1393 */
1394 hp100_page(MAC_CTRL);
1395 for (time = 0; time < 5000; time++) {
1396 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1397 break;
1398 }
1399
1400 /* Shutdown algorithm depends on the generation of Cascade */
1401 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1402 /* Disable Busmaster mode and wait for bit to go to zero. */
1403 hp100_page(HW_MAP);
1404 hp100_andb(~HP100_BM_MASTER, BM);
1405 /* 100 ms timeout */
1406 for (time = 0; time < 32000; time++) {
1407 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1408 break;
1409 }
1410 } else { /* Shasta or Rainier Shutdown/Reset */
1411 /* To ensure all bus master inloading activity has ceased,
1412 * wait for no Rx PDAs or no Rx packets on card.
1413 */
1414 hp100_page(PERFORMANCE);
1415 /* 100 ms timeout */
1416 for (time = 0; time < 10000; time++) {
1417 /* RX_PDL: PDLs not executed. */
1418 /* RX_PKT_CNT: RX'd packets on card. */
1419 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1420 break;
1421 }
1422
1423 if (time >= 10000)
1424 printk("hp100: %s: BM shutdown error.\n", dev->name);
1425
1426 /* To ensure all bus master outloading activity has ceased,
1427 * wait until the Tx PDA count goes to zero or no more Tx space
1428 * available in the Tx region of the card.
1429 */
1430 /* 100 ms timeout */
1431 for (time = 0; time < 10000; time++) {
1432 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1433 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1434 break;
1435 }
1436
1437 /* Disable Busmaster mode */
1438 hp100_page(HW_MAP);
1439 hp100_andb(~HP100_BM_MASTER, BM);
1440 } /* end of shutdown procedure for non-etr parts */
1441
1442 hp100_cascade_reset(dev, 1);
1443 }
1444 hp100_page(PERFORMANCE);
1445 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1446 /* Busmaster mode should be shut down now. */
1447 }
1448
hp100_check_lan(struct net_device * dev)1449 static int hp100_check_lan(struct net_device *dev)
1450 {
1451 struct hp100_private *lp = netdev_priv(dev);
1452
1453 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1454 hp100_stop_interface(dev);
1455 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1456 printk("hp100: %s: no connection found - check wire\n", dev->name);
1457 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1458 return -EIO;
1459 }
1460 if (lp->lan_type == HP100_LAN_100)
1461 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1462 hp100_start_interface(dev);
1463 }
1464 return 0;
1465 }
1466
1467 /*
1468 * transmit functions
1469 */
1470
1471 /* tx function for busmaster mode */
hp100_start_xmit_bm(struct sk_buff * skb,struct net_device * dev)1472 static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
1473 struct net_device *dev)
1474 {
1475 unsigned long flags;
1476 int i, ok_flag;
1477 int ioaddr = dev->base_addr;
1478 struct hp100_private *lp = netdev_priv(dev);
1479 hp100_ring_t *ringptr;
1480
1481 #ifdef HP100_DEBUG_B
1482 hp100_outw(0x4210, TRACE);
1483 printk("hp100: %s: start_xmit_bm\n", dev->name);
1484 #endif
1485 if (skb->len <= 0)
1486 goto drop;
1487
1488 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1489 return NETDEV_TX_OK;
1490
1491 /* Get Tx ring tail pointer */
1492 if (lp->txrtail->next == lp->txrhead) {
1493 /* No memory. */
1494 #ifdef HP100_DEBUG
1495 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1496 #endif
1497 /* not waited long enough since last tx? */
1498 if (time_before(jiffies, dev_trans_start(dev) + HZ))
1499 goto drop;
1500
1501 if (hp100_check_lan(dev))
1502 goto drop;
1503
1504 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1505 /* we have a 100Mb/s adapter but it isn't connected to hub */
1506 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1507 hp100_stop_interface(dev);
1508 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1509 hp100_start_interface(dev);
1510 } else {
1511 spin_lock_irqsave(&lp->lock, flags);
1512 hp100_ints_off(); /* Useful ? Jean II */
1513 i = hp100_sense_lan(dev);
1514 hp100_ints_on();
1515 spin_unlock_irqrestore(&lp->lock, flags);
1516 if (i == HP100_LAN_ERR)
1517 printk("hp100: %s: link down detected\n", dev->name);
1518 else if (lp->lan_type != i) { /* cable change! */
1519 /* it's very hard - all network settings must be changed!!! */
1520 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1521 lp->lan_type = i;
1522 hp100_stop_interface(dev);
1523 if (lp->lan_type == HP100_LAN_100)
1524 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1525 hp100_start_interface(dev);
1526 } else {
1527 printk("hp100: %s: interface reset\n", dev->name);
1528 hp100_stop_interface(dev);
1529 if (lp->lan_type == HP100_LAN_100)
1530 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1531 hp100_start_interface(dev);
1532 }
1533 }
1534
1535 goto drop;
1536 }
1537
1538 /*
1539 * we have to turn int's off before modifying this, otherwise
1540 * a tx_pdl_cleanup could occur at the same time
1541 */
1542 spin_lock_irqsave(&lp->lock, flags);
1543 ringptr = lp->txrtail;
1544 lp->txrtail = ringptr->next;
1545
1546 /* Check whether packet has minimal packet size */
1547 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1548 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1549
1550 ringptr->skb = skb;
1551 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1552 if (lp->chip == HP100_CHIPID_SHASTA) {
1553 /* TODO:Could someone who has the EISA card please check if this works? */
1554 ringptr->pdl[2] = i;
1555 } else { /* Lassen */
1556 /* In the PDL, don't use the padded size but the real packet size: */
1557 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1558 }
1559 /* Conversion to new PCI API : map skbuf data to PCI bus.
1560 * Doc says it's OK for EISA as well - Jean II */
1561 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1562
1563 /* Hand this PDL to the card. */
1564 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1565
1566 lp->txrcommit++;
1567
1568 dev->stats.tx_packets++;
1569 dev->stats.tx_bytes += skb->len;
1570
1571 spin_unlock_irqrestore(&lp->lock, flags);
1572
1573 return NETDEV_TX_OK;
1574
1575 drop:
1576 dev_kfree_skb(skb);
1577 return NETDEV_TX_OK;
1578 }
1579
1580
1581 /* clean_txring checks if packets have been sent by the card by reading
1582 * the TX_PDL register from the performance page and comparing it to the
1583 * number of committed packets. It then frees the skb's of the packets that
1584 * obviously have been sent to the network.
1585 *
1586 * Needs the PERFORMANCE page selected.
1587 */
hp100_clean_txring(struct net_device * dev)1588 static void hp100_clean_txring(struct net_device *dev)
1589 {
1590 struct hp100_private *lp = netdev_priv(dev);
1591 int ioaddr = dev->base_addr;
1592 int donecount;
1593
1594 #ifdef HP100_DEBUG_B
1595 hp100_outw(0x4211, TRACE);
1596 printk("hp100: %s: clean txring\n", dev->name);
1597 #endif
1598
1599 /* How many PDLs have been transmitted? */
1600 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1601
1602 #ifdef HP100_DEBUG
1603 if (donecount > MAX_TX_PDL)
1604 printk("hp100: %s: Warning: More PDLs transmitted than committed to card???\n", dev->name);
1605 #endif
1606
1607 for (; 0 != donecount; donecount--) {
1608 #ifdef HP100_DEBUG_BM
1609 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1610 dev->name, (u_int) lp->txrhead->skb->data,
1611 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1612 #endif
1613 /* Conversion to new PCI API : NOP */
1614 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1615 dev_consume_skb_any(lp->txrhead->skb);
1616 lp->txrhead->skb = NULL;
1617 lp->txrhead = lp->txrhead->next;
1618 lp->txrcommit--;
1619 }
1620 }
1621
1622 /* tx function for slave modes */
hp100_start_xmit(struct sk_buff * skb,struct net_device * dev)1623 static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
1624 struct net_device *dev)
1625 {
1626 unsigned long flags;
1627 int i, ok_flag;
1628 int ioaddr = dev->base_addr;
1629 u_short val;
1630 struct hp100_private *lp = netdev_priv(dev);
1631
1632 #ifdef HP100_DEBUG_B
1633 hp100_outw(0x4212, TRACE);
1634 printk("hp100: %s: start_xmit\n", dev->name);
1635 #endif
1636 if (skb->len <= 0)
1637 goto drop;
1638
1639 if (hp100_check_lan(dev))
1640 goto drop;
1641
1642 /* If there is not enough free memory on the card... */
1643 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1644 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1645 #ifdef HP100_DEBUG
1646 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1647 #endif
1648 /* not waited long enough since last failed tx try? */
1649 if (time_before(jiffies, dev_trans_start(dev) + HZ)) {
1650 #ifdef HP100_DEBUG
1651 printk("hp100: %s: trans_start timing problem\n",
1652 dev->name);
1653 #endif
1654 goto drop;
1655 }
1656 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1657 /* we have a 100Mb/s adapter but it isn't connected to hub */
1658 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1659 hp100_stop_interface(dev);
1660 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1661 hp100_start_interface(dev);
1662 } else {
1663 spin_lock_irqsave(&lp->lock, flags);
1664 hp100_ints_off(); /* Useful ? Jean II */
1665 i = hp100_sense_lan(dev);
1666 hp100_ints_on();
1667 spin_unlock_irqrestore(&lp->lock, flags);
1668 if (i == HP100_LAN_ERR)
1669 printk("hp100: %s: link down detected\n", dev->name);
1670 else if (lp->lan_type != i) { /* cable change! */
1671 /* it's very hard - all network setting must be changed!!! */
1672 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1673 lp->lan_type = i;
1674 hp100_stop_interface(dev);
1675 if (lp->lan_type == HP100_LAN_100)
1676 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1677 hp100_start_interface(dev);
1678 } else {
1679 printk("hp100: %s: interface reset\n", dev->name);
1680 hp100_stop_interface(dev);
1681 if (lp->lan_type == HP100_LAN_100)
1682 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1683 hp100_start_interface(dev);
1684 mdelay(1);
1685 }
1686 }
1687 goto drop;
1688 }
1689
1690 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1691 #ifdef HP100_DEBUG_TX
1692 printk("hp100: %s: start_xmit: busy\n", dev->name);
1693 #endif
1694 }
1695
1696 spin_lock_irqsave(&lp->lock, flags);
1697 hp100_ints_off();
1698 val = hp100_inw(IRQ_STATUS);
1699 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1700 * when the current packet being transmitted on the wire is completed. */
1701 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1702 #ifdef HP100_DEBUG_TX
1703 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1704 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1705 #endif
1706
1707 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1708 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1709
1710 hp100_outw(i, DATA32); /* tell card the total packet length */
1711 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1712
1713 if (lp->mode == 2) { /* memory mapped */
1714 /* Note: The J2585B needs alignment to 32bits here! */
1715 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1716 if (!ok_flag)
1717 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1718 } else { /* programmed i/o */
1719 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1720 (skb->len + 3) >> 2);
1721 if (!ok_flag)
1722 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1723 hp100_outl(0, DATA32);
1724 }
1725
1726 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1727
1728 dev->stats.tx_packets++;
1729 dev->stats.tx_bytes += skb->len;
1730 hp100_ints_on();
1731 spin_unlock_irqrestore(&lp->lock, flags);
1732
1733 dev_consume_skb_any(skb);
1734
1735 #ifdef HP100_DEBUG_TX
1736 printk("hp100: %s: start_xmit: end\n", dev->name);
1737 #endif
1738
1739 return NETDEV_TX_OK;
1740
1741 drop:
1742 dev_kfree_skb(skb);
1743 return NETDEV_TX_OK;
1744
1745 }
1746
1747
1748 /*
1749 * Receive Function (Non-Busmaster mode)
1750 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1751 * packet counter is non-zero.
1752 * For non-busmaster, this function does the whole work of transferring
1753 * the packet to the host memory and then up to higher layers via skb
1754 * and netif_rx.
1755 */
1756
hp100_rx(struct net_device * dev)1757 static void hp100_rx(struct net_device *dev)
1758 {
1759 int packets, pkt_len;
1760 int ioaddr = dev->base_addr;
1761 struct hp100_private *lp = netdev_priv(dev);
1762 u_int header;
1763 struct sk_buff *skb;
1764
1765 #ifdef DEBUG_B
1766 hp100_outw(0x4213, TRACE);
1767 printk("hp100: %s: rx\n", dev->name);
1768 #endif
1769
1770 /* First get indication of received lan packet */
1771 /* RX_PKT_CND indicates the number of packets which have been fully */
1772 /* received onto the card but have not been fully transferred of the card */
1773 packets = hp100_inb(RX_PKT_CNT);
1774 #ifdef HP100_DEBUG_RX
1775 if (packets > 1)
1776 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1777 #endif
1778
1779 while (packets-- > 0) {
1780 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1781 /* really advanced to the next packet. */
1782 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1783 #ifdef HP100_DEBUG_RX
1784 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1785 #endif
1786 }
1787
1788 /* First we get the header, which contains information about the */
1789 /* actual length of the received packet. */
1790 if (lp->mode == 2) { /* memory mapped mode */
1791 header = readl(lp->mem_ptr_virt);
1792 } else /* programmed i/o */
1793 header = hp100_inl(DATA32);
1794
1795 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1796
1797 #ifdef HP100_DEBUG_RX
1798 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1799 dev->name, header & HP100_PKT_LEN_MASK,
1800 (header >> 16) & 0xfff8, (header >> 16) & 7);
1801 #endif
1802
1803 /* Now we allocate the skb and transfer the data into it. */
1804 skb = netdev_alloc_skb(dev, pkt_len + 2);
1805 if (skb == NULL) { /* Not enough memory->drop packet */
1806 #ifdef HP100_DEBUG
1807 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1808 dev->name, pkt_len);
1809 #endif
1810 dev->stats.rx_dropped++;
1811 } else { /* skb successfully allocated */
1812
1813 u_char *ptr;
1814
1815 skb_reserve(skb,2);
1816
1817 /* ptr to start of the sk_buff data area */
1818 skb_put(skb, pkt_len);
1819 ptr = skb->data;
1820
1821 /* Now transfer the data from the card into that area */
1822 if (lp->mode == 2)
1823 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1824 else /* io mapped */
1825 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1826
1827 skb->protocol = eth_type_trans(skb, dev);
1828
1829 #ifdef HP100_DEBUG_RX
1830 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1831 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1832 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1833 ptr[9], ptr[10], ptr[11]);
1834 #endif
1835 netif_rx(skb);
1836 dev->stats.rx_packets++;
1837 dev->stats.rx_bytes += pkt_len;
1838 }
1839
1840 /* Indicate the card that we have got the packet */
1841 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1842
1843 switch (header & 0x00070000) {
1844 case (HP100_MULTI_ADDR_HASH << 16):
1845 case (HP100_MULTI_ADDR_NO_HASH << 16):
1846 dev->stats.multicast++;
1847 break;
1848 }
1849 } /* end of while(there are packets) loop */
1850 #ifdef HP100_DEBUG_RX
1851 printk("hp100_rx: %s: end\n", dev->name);
1852 #endif
1853 }
1854
1855 /*
1856 * Receive Function for Busmaster Mode
1857 */
hp100_rx_bm(struct net_device * dev)1858 static void hp100_rx_bm(struct net_device *dev)
1859 {
1860 int ioaddr = dev->base_addr;
1861 struct hp100_private *lp = netdev_priv(dev);
1862 hp100_ring_t *ptr;
1863 u_int header;
1864 int pkt_len;
1865
1866 #ifdef HP100_DEBUG_B
1867 hp100_outw(0x4214, TRACE);
1868 printk("hp100: %s: rx_bm\n", dev->name);
1869 #endif
1870
1871 #ifdef HP100_DEBUG
1872 if (0 == lp->rxrcommit) {
1873 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1874 return;
1875 } else
1876 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1877 * the cards BM engine */
1878 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1879 printk("hp100: %s: More packets received than committed? RX_PKT_CNT=0x%x, commit=0x%x\n",
1880 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1881 lp->rxrcommit);
1882 return;
1883 }
1884 #endif
1885
1886 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1887 /*
1888 * The packet was received into the pdl pointed to by lp->rxrhead (
1889 * the oldest pdl in the ring
1890 */
1891
1892 /* First we get the header, which contains information about the */
1893 /* actual length of the received packet. */
1894
1895 ptr = lp->rxrhead;
1896
1897 header = *(ptr->pdl - 1);
1898 pkt_len = (header & HP100_PKT_LEN_MASK);
1899
1900 /* Conversion to new PCI API : NOP */
1901 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1902
1903 #ifdef HP100_DEBUG_BM
1904 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1905 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1906 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1907 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",
1908 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1909 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1910 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1911 #endif
1912
1913 if ((pkt_len >= MIN_ETHER_SIZE) &&
1914 (pkt_len <= MAX_ETHER_SIZE)) {
1915 if (ptr->skb == NULL) {
1916 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1917 /* can happen if we only allocated room for the pdh due to memory shortage. */
1918 dev->stats.rx_dropped++;
1919 } else {
1920 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1921 ptr->skb->protocol =
1922 eth_type_trans(ptr->skb, dev);
1923
1924 netif_rx(ptr->skb); /* Up and away... */
1925
1926 dev->stats.rx_packets++;
1927 dev->stats.rx_bytes += pkt_len;
1928 }
1929
1930 switch (header & 0x00070000) {
1931 case (HP100_MULTI_ADDR_HASH << 16):
1932 case (HP100_MULTI_ADDR_NO_HASH << 16):
1933 dev->stats.multicast++;
1934 break;
1935 }
1936 } else {
1937 #ifdef HP100_DEBUG
1938 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1939 #endif
1940 if (ptr->skb != NULL)
1941 dev_kfree_skb_any(ptr->skb);
1942 dev->stats.rx_errors++;
1943 }
1944
1945 lp->rxrhead = lp->rxrhead->next;
1946
1947 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1948 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1949 /* No space for skb, header can still be received. */
1950 #ifdef HP100_DEBUG
1951 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1952 #endif
1953 return;
1954 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1955 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1956 lp->rxrtail = lp->rxrtail->next;
1957 }
1958
1959 }
1960 }
1961
1962 /*
1963 * statistics
1964 */
hp100_get_stats(struct net_device * dev)1965 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1966 {
1967 unsigned long flags;
1968 int ioaddr = dev->base_addr;
1969 struct hp100_private *lp = netdev_priv(dev);
1970
1971 #ifdef HP100_DEBUG_B
1972 hp100_outw(0x4215, TRACE);
1973 #endif
1974
1975 spin_lock_irqsave(&lp->lock, flags);
1976 hp100_ints_off(); /* Useful ? Jean II */
1977 hp100_update_stats(dev);
1978 hp100_ints_on();
1979 spin_unlock_irqrestore(&lp->lock, flags);
1980 return &(dev->stats);
1981 }
1982
hp100_update_stats(struct net_device * dev)1983 static void hp100_update_stats(struct net_device *dev)
1984 {
1985 int ioaddr = dev->base_addr;
1986 u_short val;
1987
1988 #ifdef HP100_DEBUG_B
1989 hp100_outw(0x4216, TRACE);
1990 printk("hp100: %s: update-stats\n", dev->name);
1991 #endif
1992
1993 /* Note: Statistics counters clear when read. */
1994 hp100_page(MAC_CTRL);
1995 val = hp100_inw(DROPPED) & 0x0fff;
1996 dev->stats.rx_errors += val;
1997 dev->stats.rx_over_errors += val;
1998 val = hp100_inb(CRC);
1999 dev->stats.rx_errors += val;
2000 dev->stats.rx_crc_errors += val;
2001 val = hp100_inb(ABORT);
2002 dev->stats.tx_errors += val;
2003 dev->stats.tx_aborted_errors += val;
2004 hp100_page(PERFORMANCE);
2005 }
2006
hp100_misc_interrupt(struct net_device * dev)2007 static void hp100_misc_interrupt(struct net_device *dev)
2008 {
2009 #ifdef HP100_DEBUG_B
2010 int ioaddr = dev->base_addr;
2011 #endif
2012
2013 #ifdef HP100_DEBUG_B
2014 int ioaddr = dev->base_addr;
2015 hp100_outw(0x4216, TRACE);
2016 printk("hp100: %s: misc_interrupt\n", dev->name);
2017 #endif
2018
2019 /* Note: Statistics counters clear when read. */
2020 dev->stats.rx_errors++;
2021 dev->stats.tx_errors++;
2022 }
2023
hp100_clear_stats(struct hp100_private * lp,int ioaddr)2024 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2025 {
2026 unsigned long flags;
2027
2028 #ifdef HP100_DEBUG_B
2029 hp100_outw(0x4217, TRACE);
2030 printk("hp100: %s: clear_stats\n", dev->name);
2031 #endif
2032
2033 spin_lock_irqsave(&lp->lock, flags);
2034 hp100_page(MAC_CTRL); /* get all statistics bytes */
2035 hp100_inw(DROPPED);
2036 hp100_inb(CRC);
2037 hp100_inb(ABORT);
2038 hp100_page(PERFORMANCE);
2039 spin_unlock_irqrestore(&lp->lock, flags);
2040 }
2041
2042
2043 /*
2044 * multicast setup
2045 */
2046
2047 /*
2048 * Set or clear the multicast filter for this adapter.
2049 */
2050
hp100_set_multicast_list(struct net_device * dev)2051 static void hp100_set_multicast_list(struct net_device *dev)
2052 {
2053 unsigned long flags;
2054 int ioaddr = dev->base_addr;
2055 struct hp100_private *lp = netdev_priv(dev);
2056
2057 #ifdef HP100_DEBUG_B
2058 hp100_outw(0x4218, TRACE);
2059 printk("hp100: %s: set_mc_list\n", dev->name);
2060 #endif
2061
2062 spin_lock_irqsave(&lp->lock, flags);
2063 hp100_ints_off();
2064 hp100_page(MAC_CTRL);
2065 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2066
2067 if (dev->flags & IFF_PROMISC) {
2068 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2069 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2070 memset(&lp->hash_bytes, 0xff, 8);
2071 } else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) {
2072 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2073 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2074 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2075 if (dev->flags & IFF_ALLMULTI) {
2076 /* set hash filter to receive all multicast packets */
2077 memset(&lp->hash_bytes, 0xff, 8);
2078 } else {
2079 int i, idx;
2080 u_char *addrs;
2081 struct netdev_hw_addr *ha;
2082
2083 memset(&lp->hash_bytes, 0x00, 8);
2084 #ifdef HP100_DEBUG
2085 printk("hp100: %s: computing hash filter - mc_count = %i\n",
2086 dev->name, netdev_mc_count(dev));
2087 #endif
2088 netdev_for_each_mc_addr(ha, dev) {
2089 addrs = ha->addr;
2090 #ifdef HP100_DEBUG
2091 printk("hp100: %s: multicast = %pM, ",
2092 dev->name, addrs);
2093 #endif
2094 for (i = idx = 0; i < 6; i++) {
2095 idx ^= *addrs++ & 0x3f;
2096 printk(":%02x:", idx);
2097 }
2098 #ifdef HP100_DEBUG
2099 printk("idx = %i\n", idx);
2100 #endif
2101 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2102 }
2103 }
2104 #else
2105 memset(&lp->hash_bytes, 0xff, 8);
2106 #endif
2107 } else {
2108 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2109 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2110 memset(&lp->hash_bytes, 0x00, 8);
2111 }
2112
2113 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2114 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2115 int i;
2116
2117 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2118 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2119 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2120
2121 hp100_page(MAC_ADDRESS);
2122 for (i = 0; i < 8; i++)
2123 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2124 #ifdef HP100_DEBUG
2125 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2126 dev->name, lp->mac1_mode, lp->mac2_mode,
2127 lp->hash_bytes[0], lp->hash_bytes[1],
2128 lp->hash_bytes[2], lp->hash_bytes[3],
2129 lp->hash_bytes[4], lp->hash_bytes[5],
2130 lp->hash_bytes[6], lp->hash_bytes[7]);
2131 #endif
2132
2133 if (lp->lan_type == HP100_LAN_100) {
2134 #ifdef HP100_DEBUG
2135 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2136 #endif
2137 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2138 }
2139 } else {
2140 int i;
2141 u_char old_hash_bytes[8];
2142
2143 hp100_page(MAC_ADDRESS);
2144 for (i = 0; i < 8; i++)
2145 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2146 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2147 for (i = 0; i < 8; i++)
2148 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2149 #ifdef HP100_DEBUG
2150 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2151 dev->name, lp->hash_bytes[0],
2152 lp->hash_bytes[1], lp->hash_bytes[2],
2153 lp->hash_bytes[3], lp->hash_bytes[4],
2154 lp->hash_bytes[5], lp->hash_bytes[6],
2155 lp->hash_bytes[7]);
2156 #endif
2157
2158 if (lp->lan_type == HP100_LAN_100) {
2159 #ifdef HP100_DEBUG
2160 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2161 #endif
2162 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2163 }
2164 }
2165 }
2166
2167 hp100_page(MAC_CTRL);
2168 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2169 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2170
2171 hp100_page(PERFORMANCE);
2172 hp100_ints_on();
2173 spin_unlock_irqrestore(&lp->lock, flags);
2174 }
2175
2176 /*
2177 * hardware interrupt handling
2178 */
2179
hp100_interrupt(int irq,void * dev_id)2180 static irqreturn_t hp100_interrupt(int irq, void *dev_id)
2181 {
2182 struct net_device *dev = (struct net_device *) dev_id;
2183 struct hp100_private *lp = netdev_priv(dev);
2184
2185 int ioaddr;
2186 u_int val;
2187
2188 if (dev == NULL)
2189 return IRQ_NONE;
2190 ioaddr = dev->base_addr;
2191
2192 spin_lock(&lp->lock);
2193
2194 hp100_ints_off();
2195
2196 #ifdef HP100_DEBUG_B
2197 hp100_outw(0x4219, TRACE);
2198 #endif
2199
2200 /* hp100_page( PERFORMANCE ); */
2201 val = hp100_inw(IRQ_STATUS);
2202 #ifdef HP100_DEBUG_IRQ
2203 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2204 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2205 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2206 #endif
2207
2208 if (val == 0) { /* might be a shared interrupt */
2209 spin_unlock(&lp->lock);
2210 hp100_ints_on();
2211 return IRQ_NONE;
2212 }
2213 /* We're only interested in those interrupts we really enabled. */
2214 /* val &= hp100_inw( IRQ_MASK ); */
2215
2216 /*
2217 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2218 * is considered executed whenever the RX_PDL data structure is no longer
2219 * needed.
2220 */
2221 if (val & HP100_RX_PDL_FILL_COMPL) {
2222 if (lp->mode == 1)
2223 hp100_rx_bm(dev);
2224 else {
2225 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2226 }
2227 }
2228
2229 /*
2230 * The RX_PACKET interrupt is set, when the receive packet counter is
2231 * non zero. We use this interrupt for receiving in slave mode. In
2232 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2233 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2234 * we somehow have missed a rx_pdl_fill_compl interrupt.
2235 */
2236
2237 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2238 if (lp->mode != 1) /* non busmaster */
2239 hp100_rx(dev);
2240 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2241 /* Shouldn't happen - maybe we missed a RX_PDL_FILL Interrupt? */
2242 hp100_rx_bm(dev);
2243 }
2244 }
2245
2246 /*
2247 * Ack. that we have noticed the interrupt and thereby allow next one.
2248 * Note that this is now done after the slave rx function, since first
2249 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2250 * on the J2573.
2251 */
2252 hp100_outw(val, IRQ_STATUS);
2253
2254 /*
2255 * RX_ERROR is set when a packet is dropped due to no memory resources on
2256 * the card or when a RCV_ERR occurs.
2257 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2258 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2259 */
2260 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2261 #ifdef HP100_DEBUG_IRQ
2262 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2263 #endif
2264 hp100_update_stats(dev);
2265 if (lp->mode == 1) {
2266 hp100_rxfill(dev);
2267 hp100_clean_txring(dev);
2268 }
2269 }
2270
2271 /*
2272 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2273 */
2274 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2275 hp100_rxfill(dev);
2276
2277 /*
2278 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2279 * is completed
2280 */
2281 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2282 hp100_clean_txring(dev);
2283
2284 /*
2285 * MISC_ERROR is set when either the LAN link goes down or a detected
2286 * bus error occurs.
2287 */
2288 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2289 #ifdef HP100_DEBUG_IRQ
2290 printk
2291 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2292 dev->name);
2293 #endif
2294 if (lp->mode == 1) {
2295 hp100_clean_txring(dev);
2296 hp100_rxfill(dev);
2297 }
2298 hp100_misc_interrupt(dev);
2299 }
2300
2301 spin_unlock(&lp->lock);
2302 hp100_ints_on();
2303 return IRQ_HANDLED;
2304 }
2305
2306 /*
2307 * some misc functions
2308 */
2309
hp100_start_interface(struct net_device * dev)2310 static void hp100_start_interface(struct net_device *dev)
2311 {
2312 unsigned long flags;
2313 int ioaddr = dev->base_addr;
2314 struct hp100_private *lp = netdev_priv(dev);
2315
2316 #ifdef HP100_DEBUG_B
2317 hp100_outw(0x4220, TRACE);
2318 printk("hp100: %s: hp100_start_interface\n", dev->name);
2319 #endif
2320
2321 spin_lock_irqsave(&lp->lock, flags);
2322
2323 /* Ensure the adapter does not want to request an interrupt when */
2324 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2325 hp100_page(PERFORMANCE);
2326 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2327 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2328 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2329 OPTION_LSW);
2330 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2331 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2332
2333 if (lp->mode == 1) {
2334 /* Make sure BM bit is set... */
2335 hp100_page(HW_MAP);
2336 hp100_orb(HP100_BM_MASTER, BM);
2337 hp100_rxfill(dev);
2338 } else if (lp->mode == 2) {
2339 /* Enable memory mapping. Note: Don't do this when busmaster. */
2340 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2341 }
2342
2343 hp100_page(PERFORMANCE);
2344 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2345 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2346
2347 /* enable a few interrupts: */
2348 if (lp->mode == 1) { /* busmaster mode */
2349 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2350 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2351 /* HP100_RX_PACKET | */
2352 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2353 /* HP100_TX_PDA_ZERO | */
2354 HP100_TX_COMPLETE |
2355 /* HP100_MISC_ERROR | */
2356 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2357 } else {
2358 hp100_outw(HP100_RX_PACKET |
2359 HP100_RX_ERROR | HP100_SET_HB |
2360 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2361 }
2362
2363 /* Note : before hp100_set_multicast_list(), because it will play with
2364 * spinlock itself... Jean II */
2365 spin_unlock_irqrestore(&lp->lock, flags);
2366
2367 /* Enable MAC Tx and RX, set MAC modes, ... */
2368 hp100_set_multicast_list(dev);
2369 }
2370
hp100_stop_interface(struct net_device * dev)2371 static void hp100_stop_interface(struct net_device *dev)
2372 {
2373 struct hp100_private *lp = netdev_priv(dev);
2374 int ioaddr = dev->base_addr;
2375 u_int val;
2376
2377 #ifdef HP100_DEBUG_B
2378 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2379 hp100_outw(0x4221, TRACE);
2380 #endif
2381
2382 if (lp->mode == 1)
2383 hp100_BM_shutdown(dev);
2384 else {
2385 /* Note: MMAP_DIS will be reenabled by start_interface */
2386 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2387 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2388 OPTION_LSW);
2389 val = hp100_inw(OPTION_LSW);
2390
2391 hp100_page(MAC_CTRL);
2392 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2393
2394 if (!(val & HP100_HW_RST))
2395 return; /* If reset, imm. return ... */
2396 /* ... else: busy wait until idle */
2397 for (val = 0; val < 6000; val++)
2398 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2399 hp100_page(PERFORMANCE);
2400 return;
2401 }
2402 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2403 hp100_page(PERFORMANCE);
2404 }
2405 }
2406
hp100_load_eeprom(struct net_device * dev,u_short probe_ioaddr)2407 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2408 {
2409 int i;
2410 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2411
2412 #ifdef HP100_DEBUG_B
2413 hp100_outw(0x4222, TRACE);
2414 #endif
2415
2416 hp100_page(EEPROM_CTRL);
2417 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2418 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2419 for (i = 0; i < 10000; i++)
2420 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2421 return;
2422 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2423 }
2424
2425 /* Sense connection status.
2426 * return values: LAN_10 - Connected to 10Mbit/s network
2427 * LAN_100 - Connected to 100Mbit/s network
2428 * LAN_ERR - not connected or 100Mbit/s Hub down
2429 */
hp100_sense_lan(struct net_device * dev)2430 static int hp100_sense_lan(struct net_device *dev)
2431 {
2432 int ioaddr = dev->base_addr;
2433 u_short val_VG, val_10;
2434 struct hp100_private *lp = netdev_priv(dev);
2435
2436 #ifdef HP100_DEBUG_B
2437 hp100_outw(0x4223, TRACE);
2438 #endif
2439
2440 hp100_page(MAC_CTRL);
2441 val_10 = hp100_inb(10_LAN_CFG_1);
2442 val_VG = hp100_inb(VG_LAN_CFG_1);
2443 hp100_page(PERFORMANCE);
2444 #ifdef HP100_DEBUG
2445 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2446 dev->name, val_VG, val_10);
2447 #endif
2448
2449 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2450 return HP100_LAN_10;
2451
2452 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2453 /*
2454 * This can be overriden by dos utility, so if this has no effect,
2455 * perhaps you need to download that utility from HP and set card
2456 * back to "auto detect".
2457 */
2458 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2459 hp100_page(MAC_CTRL);
2460 hp100_outb(val_10, 10_LAN_CFG_1);
2461 hp100_page(PERFORMANCE);
2462 return HP100_LAN_COAX;
2463 }
2464
2465 /* Those cards don't have a 100 Mbit connector */
2466 if ( !strcmp(lp->id, "HWP1920") ||
2467 (lp->pci_dev &&
2468 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2469 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2470 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2471 return HP100_LAN_ERR;
2472
2473 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2474 return HP100_LAN_100;
2475 return HP100_LAN_ERR;
2476 }
2477
hp100_down_vg_link(struct net_device * dev)2478 static int hp100_down_vg_link(struct net_device *dev)
2479 {
2480 struct hp100_private *lp = netdev_priv(dev);
2481 int ioaddr = dev->base_addr;
2482 unsigned long time;
2483 long savelan, newlan;
2484
2485 #ifdef HP100_DEBUG_B
2486 hp100_outw(0x4224, TRACE);
2487 printk("hp100: %s: down_vg_link\n", dev->name);
2488 #endif
2489
2490 hp100_page(MAC_CTRL);
2491 time = jiffies + (HZ / 4);
2492 do {
2493 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2494 break;
2495 if (!in_interrupt())
2496 schedule_timeout_interruptible(1);
2497 } while (time_after(time, jiffies));
2498
2499 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2500 return 0;
2501
2502 /* Drop the VG Link by clearing the link up cmd and load addr. */
2503
2504 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2505 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2506
2507 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2508 time = jiffies + (HZ / 2);
2509 do {
2510 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2511 break;
2512 if (!in_interrupt())
2513 schedule_timeout_interruptible(1);
2514 } while (time_after(time, jiffies));
2515
2516 #ifdef HP100_DEBUG
2517 if (time_after_eq(jiffies, time))
2518 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2519 #endif
2520
2521 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2522 /* logout under traffic (even though all the status bits are cleared), */
2523 /* do this workaround to get the Rev 1 MAC in its idle state */
2524 if (lp->chip == HP100_CHIPID_LASSEN) {
2525 /* Reset VG MAC to insure it leaves the logoff state even if */
2526 /* the Hub is still emitting tones */
2527 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2528 udelay(1500); /* wait for >1ms */
2529 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2530 udelay(1500);
2531 }
2532
2533 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2534 /* to get the VG mac to full reset. This is not req.d with later chips */
2535 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2536 /* selected again! This will be left to the connect hub function to */
2537 /* perform if desired. */
2538 if (lp->chip == HP100_CHIPID_LASSEN) {
2539 /* Have to write to 10 and 100VG control registers simultaneously */
2540 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2541 newlan &= ~(HP100_VG_SEL << 16);
2542 newlan |= (HP100_DOT3_MAC) << 8;
2543 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2544 hp100_outl(newlan, 10_LAN_CFG_1);
2545
2546 /* Conditionally stall for 5sec on VG selected. */
2547 time = jiffies + (HZ * 5);
2548 do {
2549 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2550 break;
2551 if (!in_interrupt())
2552 schedule_timeout_interruptible(1);
2553 } while (time_after(time, jiffies));
2554
2555 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2556 hp100_outl(savelan, 10_LAN_CFG_1);
2557 }
2558
2559 time = jiffies + (3 * HZ); /* Timeout 3s */
2560 do {
2561 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2562 break;
2563 if (!in_interrupt())
2564 schedule_timeout_interruptible(1);
2565 } while (time_after(time, jiffies));
2566
2567 if (time_before_eq(time, jiffies)) {
2568 #ifdef HP100_DEBUG
2569 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2570 #endif
2571 return -EIO;
2572 }
2573
2574 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2575 do {
2576 if (!in_interrupt())
2577 schedule_timeout_interruptible(1);
2578 } while (time_after(time, jiffies));
2579
2580 return 0;
2581 }
2582
hp100_login_to_vg_hub(struct net_device * dev,u_short force_relogin)2583 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2584 {
2585 int ioaddr = dev->base_addr;
2586 struct hp100_private *lp = netdev_priv(dev);
2587 u_short val = 0;
2588 unsigned long time;
2589 int startst;
2590
2591 #ifdef HP100_DEBUG_B
2592 hp100_outw(0x4225, TRACE);
2593 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2594 #endif
2595
2596 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2597 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2598 * promiscuous mode change)
2599 */
2600 hp100_page(MAC_CTRL);
2601 startst = hp100_inb(VG_LAN_CFG_1);
2602 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2603 #ifdef HP100_DEBUG_TRAINING
2604 printk("hp100: %s: Start training\n", dev->name);
2605 #endif
2606
2607 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2608 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2609
2610 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2611 /* entry then temporarily put them into force 100Mbit mode */
2612 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2613 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2614
2615 /* Drop the VG link by zeroing Link Up Command and Load Address */
2616 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2617
2618 #ifdef HP100_DEBUG_TRAINING
2619 printk("hp100: %s: Bring down the link\n", dev->name);
2620 #endif
2621
2622 /* Wait for link to drop */
2623 time = jiffies + (HZ / 10);
2624 do {
2625 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2626 break;
2627 if (!in_interrupt())
2628 schedule_timeout_interruptible(1);
2629 } while (time_after(time, jiffies));
2630
2631 /* Start an addressed training and optionally request promiscuous port */
2632 if ((dev->flags) & IFF_PROMISC) {
2633 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2634 if (lp->chip == HP100_CHIPID_LASSEN)
2635 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2636 } else {
2637 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2638 /* For ETR parts we need to reset the prom. bit in the training
2639 * register, otherwise promiscious mode won't be disabled.
2640 */
2641 if (lp->chip == HP100_CHIPID_LASSEN) {
2642 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2643 }
2644 }
2645
2646 /* With ETR parts, frame format request bits can be set. */
2647 if (lp->chip == HP100_CHIPID_LASSEN)
2648 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2649
2650 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2651
2652 /* Note: Next wait could be omitted for Hood and earlier chips under */
2653 /* certain circumstances */
2654 /* TODO: check if hood/earlier and skip wait. */
2655
2656 /* Wait for either short timeout for VG tones or long for login */
2657 /* Wait for the card hardware to signalise link cable status ok... */
2658 hp100_page(MAC_CTRL);
2659 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2660 do {
2661 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2662 break;
2663 if (!in_interrupt())
2664 schedule_timeout_interruptible(1);
2665 } while (time_before(jiffies, time));
2666
2667 if (time_after_eq(jiffies, time)) {
2668 #ifdef HP100_DEBUG_TRAINING
2669 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2670 #endif
2671 } else {
2672 #ifdef HP100_DEBUG_TRAINING
2673 printk
2674 ("hp100: %s: HUB tones detected. Trying to train.\n",
2675 dev->name);
2676 #endif
2677
2678 time = jiffies + (2 * HZ); /* again a timeout */
2679 do {
2680 val = hp100_inb(VG_LAN_CFG_1);
2681 if ((val & (HP100_LINK_UP_ST))) {
2682 #ifdef HP100_DEBUG_TRAINING
2683 printk("hp100: %s: Passed training.\n", dev->name);
2684 #endif
2685 break;
2686 }
2687 if (!in_interrupt())
2688 schedule_timeout_interruptible(1);
2689 } while (time_after(time, jiffies));
2690 }
2691
2692 /* If LINK_UP_ST is set, then we are logged into the hub. */
2693 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2694 #ifdef HP100_DEBUG_TRAINING
2695 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2696 if (lp->chip == HP100_CHIPID_LASSEN) {
2697 val = hp100_inw(TRAIN_ALLOW);
2698 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2699 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2700 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2701 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2702 }
2703 #endif
2704 } else {
2705 /* If LINK_UP_ST is not set, login was not successful */
2706 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2707 if (lp->chip == HP100_CHIPID_LASSEN) {
2708 /* Check allowed Register to find out why there is a problem. */
2709 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2710 #ifdef HP100_DEBUG_TRAINING
2711 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2712 #endif
2713 if (val & HP100_MALLOW_ACCDENIED)
2714 printk("hp100: %s: HUB access denied.\n", dev->name);
2715 if (val & HP100_MALLOW_CONFIGURE)
2716 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2717 if (val & HP100_MALLOW_DUPADDR)
2718 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2719 }
2720 }
2721
2722 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2723 /* to auto-select mode */
2724
2725 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2726 hp100_page(MAC_CTRL);
2727 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2728 }
2729
2730 val = hp100_inb(VG_LAN_CFG_1);
2731
2732 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2733 hp100_page(PERFORMANCE);
2734 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2735
2736 if (val & HP100_LINK_UP_ST)
2737 return 0; /* login was ok */
2738 else {
2739 printk("hp100: %s: Training failed.\n", dev->name);
2740 hp100_down_vg_link(dev);
2741 return -EIO;
2742 }
2743 }
2744 /* no forced relogin & already link there->no training. */
2745 return -EIO;
2746 }
2747
hp100_cascade_reset(struct net_device * dev,u_short enable)2748 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2749 {
2750 int ioaddr = dev->base_addr;
2751 struct hp100_private *lp = netdev_priv(dev);
2752
2753 #ifdef HP100_DEBUG_B
2754 hp100_outw(0x4226, TRACE);
2755 printk("hp100: %s: cascade_reset\n", dev->name);
2756 #endif
2757
2758 if (enable) {
2759 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2760 if (lp->chip == HP100_CHIPID_LASSEN) {
2761 /* Lassen requires a PCI transmit fifo reset */
2762 hp100_page(HW_MAP);
2763 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2764 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2765 /* Wait for min. 300 ns */
2766 /* we can't use jiffies here, because it may be */
2767 /* that we have disabled the timer... */
2768 udelay(400);
2769 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2770 hp100_page(PERFORMANCE);
2771 }
2772 } else { /* bring out of reset */
2773 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2774 udelay(400);
2775 hp100_page(PERFORMANCE);
2776 }
2777 }
2778
2779 #ifdef HP100_DEBUG
hp100_RegisterDump(struct net_device * dev)2780 void hp100_RegisterDump(struct net_device *dev)
2781 {
2782 int ioaddr = dev->base_addr;
2783 int Page;
2784 int Register;
2785
2786 /* Dump common registers */
2787 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2788 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2789 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2790 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2791 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2792
2793 /* Dump paged registers */
2794 for (Page = 0; Page < 8; Page++) {
2795 /* Dump registers */
2796 printk("page: 0x%.2x\n", Page);
2797 outw(Page, ioaddr + 0x02);
2798 for (Register = 0x8; Register < 0x22; Register += 2) {
2799 /* Display Register contents except data port */
2800 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2801 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2802 }
2803 }
2804 }
2805 hp100_page(PERFORMANCE);
2806 }
2807 #endif
2808
2809
cleanup_dev(struct net_device * d)2810 static void cleanup_dev(struct net_device *d)
2811 {
2812 struct hp100_private *p = netdev_priv(d);
2813
2814 unregister_netdev(d);
2815 release_region(d->base_addr, HP100_REGION_SIZE);
2816
2817 if (p->mode == 1) /* busmaster */
2818 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2819 p->page_vaddr_algn,
2820 virt_to_whatever(d, p->page_vaddr_algn));
2821 if (p->mem_ptr_virt)
2822 iounmap(p->mem_ptr_virt);
2823
2824 free_netdev(d);
2825 }
2826
hp100_eisa_probe(struct device * gendev)2827 static int hp100_eisa_probe(struct device *gendev)
2828 {
2829 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2830 struct eisa_device *edev = to_eisa_device(gendev);
2831 int err;
2832
2833 if (!dev)
2834 return -ENOMEM;
2835
2836 SET_NETDEV_DEV(dev, &edev->dev);
2837
2838 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2839 if (err)
2840 goto out1;
2841
2842 #ifdef HP100_DEBUG
2843 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2844 dev->base_addr);
2845 #endif
2846 dev_set_drvdata(gendev, dev);
2847 return 0;
2848 out1:
2849 free_netdev(dev);
2850 return err;
2851 }
2852
hp100_eisa_remove(struct device * gendev)2853 static int hp100_eisa_remove(struct device *gendev)
2854 {
2855 struct net_device *dev = dev_get_drvdata(gendev);
2856 cleanup_dev(dev);
2857 return 0;
2858 }
2859
2860 static struct eisa_driver hp100_eisa_driver = {
2861 .id_table = hp100_eisa_tbl,
2862 .driver = {
2863 .name = "hp100",
2864 .probe = hp100_eisa_probe,
2865 .remove = hp100_eisa_remove,
2866 }
2867 };
2868
hp100_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)2869 static int hp100_pci_probe(struct pci_dev *pdev,
2870 const struct pci_device_id *ent)
2871 {
2872 struct net_device *dev;
2873 int ioaddr;
2874 u_short pci_command;
2875 int err;
2876
2877 if (pci_enable_device(pdev))
2878 return -ENODEV;
2879
2880 dev = alloc_etherdev(sizeof(struct hp100_private));
2881 if (!dev) {
2882 err = -ENOMEM;
2883 goto out0;
2884 }
2885
2886 SET_NETDEV_DEV(dev, &pdev->dev);
2887
2888 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2889 if (!(pci_command & PCI_COMMAND_IO)) {
2890 #ifdef HP100_DEBUG
2891 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2892 #endif
2893 pci_command |= PCI_COMMAND_IO;
2894 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2895 }
2896
2897 if (!(pci_command & PCI_COMMAND_MASTER)) {
2898 #ifdef HP100_DEBUG
2899 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2900 #endif
2901 pci_command |= PCI_COMMAND_MASTER;
2902 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2903 }
2904
2905 ioaddr = pci_resource_start(pdev, 0);
2906 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2907 if (err)
2908 goto out1;
2909
2910 #ifdef HP100_DEBUG
2911 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2912 #endif
2913 pci_set_drvdata(pdev, dev);
2914 return 0;
2915 out1:
2916 free_netdev(dev);
2917 out0:
2918 pci_disable_device(pdev);
2919 return err;
2920 }
2921
hp100_pci_remove(struct pci_dev * pdev)2922 static void hp100_pci_remove(struct pci_dev *pdev)
2923 {
2924 struct net_device *dev = pci_get_drvdata(pdev);
2925
2926 cleanup_dev(dev);
2927 pci_disable_device(pdev);
2928 }
2929
2930
2931 static struct pci_driver hp100_pci_driver = {
2932 .name = "hp100",
2933 .id_table = hp100_pci_tbl,
2934 .probe = hp100_pci_probe,
2935 .remove = hp100_pci_remove,
2936 };
2937
2938 /*
2939 * module section
2940 */
2941
2942 MODULE_LICENSE("GPL");
2943 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, "
2944 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2945 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2946
2947 /*
2948 * Note: to register three isa devices, use:
2949 * option hp100 hp100_port=0,0,0
2950 * to register one card at io 0x280 as eth239, use:
2951 * option hp100 hp100_port=0x280
2952 */
2953 #if defined(MODULE) && defined(CONFIG_ISA)
2954 #define HP100_DEVICES 5
2955 /* Parameters set by insmod */
2956 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2957 module_param_hw_array(hp100_port, int, ioport, NULL, 0);
2958
2959 /* List of devices */
2960 static struct net_device *hp100_devlist[HP100_DEVICES];
2961
hp100_isa_init(void)2962 static int __init hp100_isa_init(void)
2963 {
2964 struct net_device *dev;
2965 int i, err, cards = 0;
2966
2967 /* Don't autoprobe ISA bus */
2968 if (hp100_port[0] == 0)
2969 return -ENODEV;
2970
2971 /* Loop on all possible base addresses */
2972 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2973 dev = alloc_etherdev(sizeof(struct hp100_private));
2974 if (!dev) {
2975 while (cards > 0)
2976 cleanup_dev(hp100_devlist[--cards]);
2977
2978 return -ENOMEM;
2979 }
2980
2981 err = hp100_isa_probe(dev, hp100_port[i]);
2982 if (!err)
2983 hp100_devlist[cards++] = dev;
2984 else
2985 free_netdev(dev);
2986 }
2987
2988 return cards > 0 ? 0 : -ENODEV;
2989 }
2990
hp100_isa_cleanup(void)2991 static void hp100_isa_cleanup(void)
2992 {
2993 int i;
2994
2995 for (i = 0; i < HP100_DEVICES; i++) {
2996 struct net_device *dev = hp100_devlist[i];
2997 if (dev)
2998 cleanup_dev(dev);
2999 }
3000 }
3001 #else
3002 #define hp100_isa_init() (0)
3003 #define hp100_isa_cleanup() do { } while(0)
3004 #endif
3005
hp100_module_init(void)3006 static int __init hp100_module_init(void)
3007 {
3008 int err;
3009
3010 err = hp100_isa_init();
3011 if (err && err != -ENODEV)
3012 goto out;
3013 err = eisa_driver_register(&hp100_eisa_driver);
3014 if (err && err != -ENODEV)
3015 goto out2;
3016 err = pci_register_driver(&hp100_pci_driver);
3017 if (err && err != -ENODEV)
3018 goto out3;
3019 out:
3020 return err;
3021 out3:
3022 eisa_driver_unregister (&hp100_eisa_driver);
3023 out2:
3024 hp100_isa_cleanup();
3025 goto out;
3026 }
3027
3028
hp100_module_exit(void)3029 static void __exit hp100_module_exit(void)
3030 {
3031 hp100_isa_cleanup();
3032 eisa_driver_unregister (&hp100_eisa_driver);
3033 pci_unregister_driver (&hp100_pci_driver);
3034 }
3035
3036 module_init(hp100_module_init)
3037 module_exit(hp100_module_exit)
3038
