3 ** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
5 ** $Id: hp100.c,v 1.1.1.1 2005/04/11 02:50:27 jack Exp $
7 ** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
8 ** Extended for new busmaster capable chipsets by
9 ** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
11 ** Maintained by: Jaroslav Kysela <perex@suse.cz>
13 ** This driver has only been tested with
14 ** -- HP J2585B 10/100 Mbit/s PCI Busmaster
15 ** -- HP J2585A 10/100 Mbit/s PCI
16 ** -- HP J2970 10 Mbit/s PCI Combo 10base-T/BNC
17 ** -- HP J2973 10 Mbit/s PCI 10base-T
18 ** -- HP J2573 10/100 ISA
19 ** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
20 ** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
22 ** but it should also work with the other CASCADE based adapters.
25 ** - J2573 seems to hang sometimes when in shared memory mode.
26 ** - Mode for Priority TX
27 ** - Check PCI registers, performance might be improved?
28 ** - To reduce interrupt load in busmaster, one could switch off
29 ** the interrupts that are used to refill the queues whenever the
30 ** queues are filled up to more than a certain threshold.
31 ** - some updates for EISA version of card
34 ** This code is free software; you can redistribute it and/or modify
35 ** it under the terms of the GNU General Public License as published by
36 ** the Free Software Foundation; either version 2 of the License, or
37 ** (at your option) any later version.
39 ** This code is distributed in the hope that it will be useful,
40 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
41 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42 ** GNU General Public License for more details.
44 ** You should have received a copy of the GNU General Public License
45 ** along with this program; if not, write to the Free Software
46 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
49 ** - used indent to change coding-style
50 ** - added KTI DP-200 EISA ID
51 ** - ioremap is also used for low (<1MB) memory (multi-architecture support)
53 ** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
54 ** - release resources on failure in init_module
56 ** 1.57 -> 1.57b - Jean II
57 ** - fix spinlocks, SMP is now working !
60 ** - updates for new PCI interface for 2.1 kernels
63 ** - removed printk in misc. interrupt and update statistics to allow
64 ** monitoring of card status
65 ** - timing changes in xmit routines, relogin to 100VG hub added when
67 ** - included fix for Compex FreedomLine PCI adapter
70 ** - fixed bad initialization in init_module
71 ** - added Compex FreedomLine adapter
72 ** - some fixes in card initialization
75 ** - added hardware multicast filter support (doesn't work)
76 ** - little changes in hp100_sense_lan routine
77 ** - added support for Coax and AUI (J2970)
78 ** - fix for multiple cards and hp100_mode parameter (insmod)
79 ** - fix for shared IRQ
82 ** - fixed bug in multicast support
86 #define HP100_DEFAULT_PRIORITY_TX 0
89 #undef HP100_DEBUG_B /* Trace */
90 #undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
92 #undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
94 #undef HP100_DEBUG_IRQ
97 #undef HP100_MULTICAST_FILTER /* Need to be debugged... */
99 #include <linux/version.h>
100 #include <linux/module.h>
101 #include <linux/kernel.h>
102 #include <linux/sched.h>
103 #include <linux/string.h>
104 #include <linux/errno.h>
105 #include <linux/ioport.h>
106 #include <linux/slab.h>
107 #include <linux/interrupt.h>
108 #include <linux/pci.h>
109 #include <linux/spinlock.h>
110 #include <asm/bitops.h>
113 #include <linux/netdevice.h>
114 #include <linux/etherdevice.h>
115 #include <linux/skbuff.h>
117 #include <linux/types.h>
118 #include <linux/config.h> /* for CONFIG_PCI */
119 #include <linux/delay.h>
120 #include <linux/init.h>
123 typedef struct net_device_stats hp100_stats_t;
132 #define HP100_BUS_ISA 0
133 #define HP100_BUS_EISA 1
134 #define HP100_BUS_PCI 2
136 #ifndef PCI_DEVICE_ID_HP_J2585B
137 #define PCI_DEVICE_ID_HP_J2585B 0x1031
139 #ifndef PCI_VENDOR_ID_COMPEX
140 #define PCI_VENDOR_ID_COMPEX 0x11f6
142 #ifndef PCI_DEVICE_ID_COMPEX_ENET100VG4
143 #define PCI_DEVICE_ID_COMPEX_ENET100VG4 0x0112
145 #ifndef PCI_VENDOR_ID_COMPEX2
146 #define PCI_VENDOR_ID_COMPEX2 0x101a
148 #ifndef PCI_DEVICE_ID_COMPEX2_100VG
149 #define PCI_DEVICE_ID_COMPEX2_100VG 0x0005
152 #define HP100_REGION_SIZE 0x20 /* for ioports */
154 #define HP100_MAX_PACKET_SIZE (1536+4)
155 #define HP100_MIN_PACKET_SIZE 60
157 #ifndef HP100_DEFAULT_RX_RATIO
158 /* default - 75% onboard memory on the card are used for RX packets */
159 #define HP100_DEFAULT_RX_RATIO 75
162 #ifndef HP100_DEFAULT_PRIORITY_TX
163 /* default - don't enable transmit outgoing packets as priority */
164 #define HP100_DEFAULT_PRIORITY_TX 0
171 struct hp100_eisa_id {
177 struct hp100_pci_id {
182 struct hp100_private {
183 struct hp100_eisa_id *id;
188 u_int virt_memory_size;
189 u_short rx_ratio; /* 1 - 99 */
190 u_short priority_tx; /* != 0 - priority tx */
191 u_short mode; /* PIO, Shared Mem or Busmaster */
193 struct pci_dev *pci_dev;
194 short mem_mapped; /* memory mapped access */
195 void *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
196 unsigned long mem_ptr_phys; /* physical memory mapped area */
197 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
198 int hub_status; /* was login to hub successful? */
201 u_char hash_bytes[8];
204 /* Rings for busmaster mode: */
205 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
206 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
207 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
208 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
210 hp100_ring_t rxring[MAX_RX_PDL];
211 hp100_ring_t txring[MAX_TX_PDL];
213 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
214 u_long whatever_offset; /* Offset to bus/phys/dma address */
215 int rxrcommit; /* # Rx PDLs commited to adapter */
216 int txrcommit; /* # Tx PDLs commited to adapter */
223 static struct hp100_eisa_id hp100_eisa_ids[] = {
225 /* 10/100 EISA card with revision A Cascade chip */
226 {0x80F1F022, "HP J2577 rev A", HP100_BUS_EISA},
228 /* 10/100 ISA card with revision A Cascade chip */
229 {0x50F1F022, "HP J2573 rev A", HP100_BUS_ISA},
231 /* 10 only EISA card with Cascade chip */
232 {0x2019F022, "HP 27248B", HP100_BUS_EISA},
234 /* 10/100 EISA card with Cascade chip */
235 {0x4019F022, "HP J2577", HP100_BUS_EISA},
237 /* 10/100 ISA card with Cascade chip */
238 {0x5019F022, "HP J2573", HP100_BUS_ISA},
240 /* 10/100 EISA card with AT&T chip */
241 {0x9019f022, "HP J2577", HP100_BUS_EISA },
243 /* 10/100 PCI card - old J2585A */
244 {0x1030103c, "HP J2585A", HP100_BUS_PCI},
246 /* 10/100 PCI card - new J2585B - master capable */
247 {0x1041103c, "HP J2585B", HP100_BUS_PCI},
249 /* 10 Mbit Combo Adapter */
250 {0x1042103c, "HP J2970", HP100_BUS_PCI},
252 /* 10 Mbit 10baseT Adapter */
253 {0x1040103c, "HP J2973", HP100_BUS_PCI},
255 /* 10/100 EISA card from Compex */
256 {0x0103180e, "ReadyLink ENET100-VG4", HP100_BUS_EISA},
258 /* 10/100 EISA card from Compex - FreedomLine (sq5bpf) */
259 /* Note: plhbrod@mbox.vol.cz reported that same ID have ISA */
260 /* version of adapter, too... */
261 {0x0104180e, "FreedomLine 100/VG", HP100_BUS_EISA},
263 /* 10/100 PCI card from Compex - FreedomLine
265 * I think this card doesn't like aic7178 scsi controller, but
266 * I haven't tested this much. It works fine on diskless machines.
267 * Jacek Lipkowski <sq5bpf@acid.ch.pw.edu.pl>
269 {0x021211f6, "FreedomLine 100/VG", HP100_BUS_PCI},
271 /* 10/100 PCI card from Compex (J2585A compatible) */
272 {0x011211f6, "ReadyLink ENET100-VG4", HP100_BUS_PCI},
274 /* 10/100 PCI card from KTI */
275 {0x40008e2e, "KTI DP-200", HP100_BUS_PCI }
278 #define HP100_EISA_IDS_SIZE (sizeof(hp100_eisa_ids)/sizeof(struct hp100_eisa_id))
281 static struct hp100_pci_id hp100_pci_ids[] = {
282 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A},
283 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B},
284 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4},
285 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG}
289 #define HP100_PCI_IDS_SIZE (sizeof(hp100_pci_ids)/sizeof(struct hp100_pci_id))
291 #if LINUX_VERSION_CODE >= 0x20400
292 static struct pci_device_id hp100_pci_tbl[] __initdata = {
293 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
294 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
295 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
296 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
297 {} /* Terminating entry */
299 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
300 #endif /* LINUX_VERSION_CODE >= 0x20400 */
302 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
303 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
304 static int hp100_mode = 1;
306 MODULE_PARM(hp100_rx_ratio, "1i");
307 MODULE_PARM(hp100_priority_tx, "1i");
308 MODULE_PARM(hp100_mode, "1i");
314 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
315 struct pci_dev *pci_dev);
318 static int hp100_open(struct net_device *dev);
319 static int hp100_close(struct net_device *dev);
320 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
321 static int hp100_start_xmit_bm(struct sk_buff *skb,
322 struct net_device *dev);
323 static void hp100_rx(struct net_device *dev);
324 static hp100_stats_t *hp100_get_stats(struct net_device *dev);
325 static void hp100_misc_interrupt(struct net_device *dev);
326 static void hp100_update_stats(struct net_device *dev);
327 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
328 static void hp100_set_multicast_list(struct net_device *dev);
329 static void hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs);
330 static void hp100_start_interface(struct net_device *dev);
331 static void hp100_stop_interface(struct net_device *dev);
332 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
333 static int hp100_sense_lan(struct net_device *dev);
334 static int hp100_login_to_vg_hub(struct net_device *dev,
335 u_short force_relogin);
336 static int hp100_down_vg_link(struct net_device *dev);
337 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
338 static void hp100_BM_shutdown(struct net_device *dev);
339 static void hp100_mmuinit(struct net_device *dev);
340 static void hp100_init_pdls(struct net_device *dev);
341 static int hp100_init_rxpdl(struct net_device *dev,
342 register hp100_ring_t * ringptr,
343 register u_int * pdlptr);
344 static int hp100_init_txpdl(struct net_device *dev,
345 register hp100_ring_t * ringptr,
346 register u_int * pdlptr);
347 static void hp100_rxfill(struct net_device *dev);
348 static void hp100_hwinit(struct net_device *dev);
349 static void hp100_clean_txring(struct net_device *dev);
351 static void hp100_RegisterDump(struct net_device *dev);
354 /* Conversion to new PCI API :
355 * Convert an address in a kernel buffer to a bus/phys/dma address.
356 * This work *only* for memory fragments part of lp->page_vaddr,
357 * because it was properly DMA allocated via pci_alloc_consistent(),
358 * so we just need to "retreive" the original mapping to bus/phys/dma
359 * address - Jean II */
360 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
362 return ((u_long) ptr) +
363 ((struct hp100_private *) (dev->priv))->whatever_offset;
366 /* TODO: This function should not really be needed in a good design... */
367 static void wait(void)
374 * These functions should - if possible - avoid doing write operations
375 * since this could cause problems when the card is not installed.
378 int __init hp100_probe(struct net_device *dev)
380 int base_addr = dev ? dev->base_addr : 0;
383 int pci_start_index = 0;
387 hp100_outw(0x4200, TRACE);
388 printk("hp100: %s: probe\n", dev->name);
391 if (base_addr > 0xff) { /* Check a single specified location. */
392 if (check_region(base_addr, HP100_REGION_SIZE))
394 if (base_addr < 0x400)
395 return hp100_probe1(dev, base_addr, HP100_BUS_ISA,
397 if (EISA_bus && base_addr >= 0x1c38 && ((base_addr - 0x1c38) & 0x3ff) == 0)
398 return hp100_probe1(dev, base_addr, HP100_BUS_EISA, NULL);
400 printk("hp100: %s: You must specify card # in i/o address parameter for PCI bus...", dev->name);
406 if (base_addr > 0 && base_addr < 8 + 1)
407 pci_start_index = 0x100 | (base_addr - 1);
413 /* First: scan PCI bus(es) */
416 if (pcibios_present()) {
418 struct pci_dev *pci_dev = NULL;
422 #ifdef HP100_DEBUG_PCI
423 printk("hp100: %s: PCI BIOS is present, checking for devices..\n", dev->name);
426 for (pci_id_index = 0; pci_id_index < HP100_PCI_IDS_SIZE;
428 while ((pci_dev = pci_find_device(hp100_pci_ids[pci_id_index].vendor,
429 hp100_pci_ids[pci_id_index].device,
431 if (pci_index < (pci_start_index & 7)) {
435 if (pci_enable_device(pci_dev))
438 ioaddr = pci_resource_start(pci_dev, 0);
439 if (check_region(ioaddr, HP100_REGION_SIZE))
441 pci_read_config_word(pci_dev, PCI_COMMAND, &pci_command);
442 if (!(pci_command & PCI_COMMAND_IO)) {
444 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
446 pci_command |= PCI_COMMAND_IO;
447 pci_write_config_word(pci_dev, PCI_COMMAND, pci_command);
449 if (!(pci_command & PCI_COMMAND_MASTER)) {
451 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
453 pci_command |= PCI_COMMAND_MASTER;
454 pci_write_config_word(pci_dev, PCI_COMMAND, pci_command);
457 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
459 if (hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pci_dev) == 0)
464 if (pci_start_index > 0)
466 #endif /* CONFIG_PCI */
468 /* Second: Probe all EISA possible port regions (if EISA bus present) */
469 for (ioaddr = 0x1c38; EISA_bus && ioaddr < 0x10000; ioaddr += 0x400) {
470 if (check_region(ioaddr, HP100_REGION_SIZE))
472 if (hp100_probe1(dev, ioaddr, HP100_BUS_EISA, NULL) == 0)
476 /* Third: Probe all ISA possible port regions */
477 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x20) {
478 if (check_region(ioaddr, HP100_REGION_SIZE))
480 if (hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL) == 0)
487 static int __init hp100_probe1(struct net_device *dev, int ioaddr,
488 u_char bus, struct pci_dev *pci_dev)
495 u_int memory_size = 0, virt_memory_size = 0;
496 u_short local_mode, lsw;
498 unsigned long mem_ptr_phys;
500 struct hp100_private *lp;
501 struct hp100_eisa_id *eid;
504 hp100_outw(0x4201, TRACE);
505 printk("hp100: %s: probe1\n", dev->name);
510 printk("hp100_probe1: %s: dev == NULL ?\n", dev->name);
515 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
518 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
520 if (chip == HP100_CHIPID_SHASTA)
521 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
522 else if (chip == HP100_CHIPID_RAINIER)
523 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
524 else if (chip == HP100_CHIPID_LASSEN)
525 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
527 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
531 dev->base_addr = ioaddr;
533 hp100_page(ID_MAC_ADDR);
534 for (i = uc = eisa_id = 0; i < 4; i++) {
536 uc_1 = hp100_inb(BOARD_ID + i);
537 eisa_id |= uc_1 << 24;
540 uc += hp100_inb(BOARD_ID + 4);
542 if (uc != 0xff) { /* bad checksum? */
543 printk("hp100_probe: %s: bad EISA ID checksum at base port 0x%x\n", dev->name, ioaddr);
547 for (i = 0; i < HP100_EISA_IDS_SIZE; i++)
548 if (hp100_eisa_ids[i].id == eisa_id)
550 if (i >= HP100_EISA_IDS_SIZE) {
551 for (i = 0; i < HP100_EISA_IDS_SIZE; i++)
552 if ((hp100_eisa_ids[i].id & 0xf0ffffff) == (eisa_id & 0xf0ffffff))
554 if (i >= HP100_EISA_IDS_SIZE) {
555 printk ("hp100_probe: %s: card at port 0x%x isn't known (id = 0x%x)\n", dev->name, ioaddr, eisa_id);
559 eid = &hp100_eisa_ids[i];
560 if ((eid->id & 0x0f000000) < (eisa_id & 0x0f000000)) {
561 printk("hp100_probe: %s: newer version of card %s at port 0x%x - unsupported\n", dev->name, eid->name, ioaddr);
565 for (i = uc = 0; i < 7; i++)
566 uc += hp100_inb(LAN_ADDR + i);
568 printk("hp100_probe: %s: bad lan address checksum (card %s at port 0x%x)\n", dev->name, eid->name, ioaddr);
572 /* Make sure, that all registers are correctly updated... */
574 hp100_load_eeprom(dev, ioaddr);
578 * Determine driver operation mode
580 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
581 * force driver modes:
582 * hp100_mode=1 -> default, use busmaster mode if configured.
583 * hp100_mode=2 -> enable shared memory mode
584 * hp100_mode=3 -> force use of i/o mapped mode.
585 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
590 * 0x2278 -> J2585B, PnP shared memory mode
591 * 0x2270 -> J2585B, shared memory mode, 0xdc000
592 * 0xa23c -> J2585B, I/O mapped mode
593 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
594 * 0x2220 -> EISA HP, I/O (Shasta Chip)
595 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
600 hp100_outw(0xfefe, OPTION_LSW);
601 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
604 /* hp100_mode value maybe used in future by another card */
605 local_mode = hp100_mode;
606 if (local_mode < 1 || local_mode > 4)
607 local_mode = 1; /* default */
609 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
610 hp100_inw(OPTION_LSW));
613 if (local_mode == 3) {
614 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
615 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
616 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
617 printk("hp100: %s: IO mapped mode forced.\n", dev->name);
618 } else if (local_mode == 2) {
619 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
620 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
621 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
622 printk("hp100: %s: Shared memory mode requested.\n", dev->name);
623 } else if (local_mode == 4) {
624 if (chip == HP100_CHIPID_LASSEN) {
625 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
626 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
627 printk("hp100: %s: Busmaster mode requested.\n", dev->name);
632 if (local_mode == 1) { /* default behaviour */
633 lsw = hp100_inw(OPTION_LSW);
635 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
636 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
638 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
641 } else if (chip == HP100_CHIPID_LASSEN &&
642 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
643 /* Conversion to new PCI API :
644 * I don't have the doc, but I assume that the card
645 * can map the full 32bit address space.
646 * Also, we can have EISA Busmaster cards (not tested),
647 * so beware !!! - Jean II */
648 if((bus == HP100_BUS_PCI) &&
649 (pci_set_dma_mask(pci_dev, 0xffffffff))) {
650 /* Gracefully fallback to shared memory */
653 printk("hp100: %s: Busmaster mode enabled.\n", dev->name);
654 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
658 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
659 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
661 /* In this case, try shared memory mode */
663 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
664 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
668 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
671 /* Check for shared memory on the card, eventually remap it */
673 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
676 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
677 virt_memory_size = 0;
679 /* For memory mapped or busmaster mode, we want the memory address */
680 if (mem_mapped || (local_mode == 1)) {
681 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
682 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
684 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
685 printk("hp100: %s: Can only use programmed i/o mode.\n", dev->name);
688 local_mode = 3; /* Use programmed i/o */
691 /* We do not need access to shared memory in busmaster mode */
692 /* However in slave mode we need to remap high (>1GB) card memory */
693 if (local_mode != 1) { /* = not busmaster */
694 /* We try with smaller memory sizes, if ioremap fails */
695 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
696 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
698 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
702 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);
708 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
709 printk("hp100: %s: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n", dev->name);
711 virt_memory_size = 0;
716 if (local_mode == 3) { /* io mapped forced */
720 printk("hp100: %s: Using (slow) programmed i/o mode.\n", dev->name);
723 /* Initialise the "private" data structure for this card. */
724 if ((dev->priv = kmalloc(sizeof(struct hp100_private), GFP_KERNEL)) == NULL)
727 lp = (struct hp100_private *) dev->priv;
728 memset(lp, 0, sizeof(struct hp100_private));
729 spin_lock_init(&lp->lock);
732 lp->mode = local_mode;
734 lp->pci_dev = pci_dev;
735 lp->priority_tx = hp100_priority_tx;
736 lp->rx_ratio = hp100_rx_ratio;
737 lp->mem_ptr_phys = mem_ptr_phys;
738 lp->mem_ptr_virt = mem_ptr_virt;
739 hp100_page(ID_MAC_ADDR);
740 lp->soft_model = hp100_inb(SOFT_MODEL);
741 lp->mac1_mode = HP100_MAC1MODE3;
742 lp->mac2_mode = HP100_MAC2MODE3;
743 memset(&lp->hash_bytes, 0x00, 8);
745 dev->base_addr = ioaddr;
747 lp->memory_size = memory_size;
748 lp->virt_memory_size = virt_memory_size;
749 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
751 /* memory region for programmed i/o */
752 request_region(dev->base_addr, HP100_REGION_SIZE, eid->name);
754 dev->open = hp100_open;
755 dev->stop = hp100_close;
757 if (lp->mode == 1) /* busmaster */
758 dev->hard_start_xmit = hp100_start_xmit_bm;
760 dev->hard_start_xmit = hp100_start_xmit;
762 dev->get_stats = hp100_get_stats;
763 dev->set_multicast_list = &hp100_set_multicast_list;
765 /* Ask the card for which IRQ line it is configured */
766 if (bus == HP100_BUS_PCI) {
767 dev->irq = pci_dev->irq;
770 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
775 if (lp->mode == 1) /* busmaster */
778 /* Ask the card for its MAC address and store it for later use. */
779 hp100_page(ID_MAC_ADDR);
780 for (i = uc = 0; i < 6; i++)
781 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
783 /* Reset statistics (counters) */
784 hp100_clear_stats(lp, ioaddr);
786 SET_MODULE_OWNER(dev);
789 /* If busmaster mode is wanted, a dma-capable memory area is needed for
791 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
792 * needed for the allocation of the memory area.
795 /* TODO: We do not need this with old cards, where PDLs are stored
796 * in the cards shared memory area. But currently, busmaster has been
797 * implemented/tested only with the lassen chip anyway... */
798 if (lp->mode == 1) { /* busmaster */
799 dma_addr_t page_baddr;
800 /* Get physically continous memory for TX & RX PDLs */
801 /* Conversion to new PCI API :
802 * Pages are always aligned and zeroed, no need to it ourself.
803 * Doc says should be OK for EISA bus as well - Jean II */
804 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL)
806 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
808 #ifdef HP100_DEBUG_BM
809 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);
811 lp->rxrcommit = lp->txrcommit = 0;
812 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
813 lp->txrhead = lp->txrtail = &(lp->txring[0]);
816 /* Initialise the card. */
817 /* (I'm not really sure if it's a good idea to do this during probing, but
818 * like this it's assured that the lan connection type can be sensed
823 /* Try to find out which kind of LAN the card is connected to. */
824 lp->lan_type = hp100_sense_lan(dev);
826 /* Print out a message what about what we think we have probed. */
827 printk("hp100: %s: %s at 0x%x, IRQ %d, ", dev->name, lp->id->name, ioaddr, dev->irq);
839 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
841 if (lp->mode == 2) { /* memory mapped */
842 printk("hp100: %s: Memory area at 0x%lx-0x%lx", dev->name, mem_ptr_phys,
843 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
845 printk(" (virtual base %p)", mem_ptr_virt);
848 /* Set for info when doing ifconfig */
849 dev->mem_start = mem_ptr_phys;
850 dev->mem_end = mem_ptr_phys + lp->memory_size;
852 printk("hp100: %s: ", dev->name);
853 if (lp->lan_type != HP100_LAN_ERR)
854 printk("Adapter is attached to ");
855 switch (lp->lan_type) {
857 printk("100Mb/s Voice Grade AnyLAN network.\n");
860 printk("10Mb/s network.\n");
863 printk("Warning! Link down.\n");
869 /* This procedure puts the card into a stable init state */
870 static void hp100_hwinit(struct net_device *dev)
872 int ioaddr = dev->base_addr;
873 struct hp100_private *lp = (struct hp100_private *) dev->priv;
876 hp100_outw(0x4202, TRACE);
877 printk("hp100: %s: hwinit\n", dev->name);
880 /* Initialise the card. -------------------------------------------- */
882 /* Clear all pending Ints and disable Ints */
883 hp100_page(PERFORMANCE);
884 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
885 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
887 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
888 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
891 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
894 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
895 hp100_cascade_reset(dev, TRUE);
896 hp100_page(MAC_CTRL);
897 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
900 /* Initiate EEPROM reload */
901 hp100_load_eeprom(dev, 0);
905 /* Go into reset again. */
906 hp100_cascade_reset(dev, TRUE);
908 /* Set Option Registers to a safe state */
909 hp100_outw(HP100_DEBUG_EN |
913 HP100_BM_READ | HP100_RESET_HB |
917 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
919 hp100_outw(HP100_TRI_INT |
920 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
922 hp100_outb(HP100_PRIORITY_TX |
924 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
926 /* TODO: Configure MMU for Ram Test. */
927 /* TODO: Ram Test. */
929 /* Re-check if adapter is still at same i/o location */
930 /* (If the base i/o in eeprom has been changed but the */
931 /* registers had not been changed, a reload of the eeprom */
932 /* would move the adapter to the address stored in eeprom */
934 /* TODO: Code to implement. */
936 /* Until here it was code from HWdiscover procedure. */
937 /* Next comes code from mmuinit procedure of SCO BM driver which is
938 * called from HWconfigure in the SCO driver. */
940 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
941 * multicast filter...
945 /* We don't turn the interrupts on here - this is done by start_interface. */
946 wait(); /* TODO: Do we really need this? */
948 /* Enable Hardware (e.g. unreset) */
949 hp100_cascade_reset(dev, FALSE);
951 /* ------- initialisation complete ----------- */
953 /* Finally try to log in the Hub if there may be a VG connection. */
954 if (lp->lan_type != HP100_LAN_10)
955 hp100_login_to_vg_hub(dev, FALSE); /* relogin */
960 * mmuinit - Reinitialise Cascade MMU and MAC settings.
961 * Note: Must already be in reset and leaves card in reset.
963 static void hp100_mmuinit(struct net_device *dev)
965 int ioaddr = dev->base_addr;
966 struct hp100_private *lp = (struct hp100_private *) dev->priv;
970 hp100_outw(0x4203, TRACE);
971 printk("hp100: %s: mmuinit\n", dev->name);
975 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
976 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
981 /* Make sure IRQs are masked off and ack'ed. */
982 hp100_page(PERFORMANCE);
983 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
984 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
988 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
989 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
990 * - Clear Priority, Advance Pkt and Xmit Cmd
993 hp100_outw(HP100_DEBUG_EN |
995 HP100_EE_EN | HP100_RESET_HB |
998 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1000 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
1002 if (lp->mode == 1) { /* busmaster */
1003 hp100_outw(HP100_BM_WRITE |
1005 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
1006 } else if (lp->mode == 2) { /* memory mapped */
1007 hp100_outw(HP100_BM_WRITE |
1008 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
1009 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
1010 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
1011 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
1012 } else if (lp->mode == 3) { /* i/o mapped mode */
1013 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
1014 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
1018 hp100_outb(0, EARLYRXCFG);
1019 hp100_outw(0, EARLYTXCFG);
1022 * Enable Bus Master mode
1024 if (lp->mode == 1) { /* busmaster */
1025 /* Experimental: Set some PCI configuration bits */
1027 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
1028 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
1030 /* PCI Bus failures should result in a Misc. Interrupt */
1031 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
1033 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
1035 /* Use Burst Mode and switch on PAGE_CK */
1036 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
1037 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
1038 hp100_orb(HP100_BM_PAGE_CK, BM);
1039 hp100_orb(HP100_BM_MASTER, BM);
1040 } else { /* not busmaster */
1043 hp100_andb(~HP100_BM_MASTER, BM);
1047 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
1049 hp100_page(MMU_CFG);
1050 if (lp->mode == 1) { /* only needed for Busmaster */
1051 int xmit_stop, recv_stop;
1053 if ((lp->chip == HP100_CHIPID_RAINIER)
1054 || (lp->chip == HP100_CHIPID_SHASTA)) {
1058 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
1059 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
1060 * to the next higher 1k boundary) bytes for the rx-pdl's
1061 * Note: For non-etr chips the transmit stop register must be
1062 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
1064 pdl_stop = lp->memory_size;
1065 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
1066 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
1067 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
1068 #ifdef HP100_DEBUG_BM
1069 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
1072 /* ETR chip (Lassen) in busmaster mode */
1073 xmit_stop = (lp->memory_size) - 1;
1074 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1077 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1078 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1079 #ifdef HP100_DEBUG_BM
1080 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1081 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1084 /* Slave modes (memory mapped and programmed io) */
1085 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1086 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1088 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1089 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1093 /* Write MAC address into page 1 */
1094 hp100_page(MAC_ADDRESS);
1095 for (i = 0; i < 6; i++)
1096 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1098 /* Zero the multicast hash registers */
1099 for (i = 0; i < 8; i++)
1100 hp100_outb(0x0, HASH_BYTE0 + i);
1102 /* Set up MAC defaults */
1103 hp100_page(MAC_CTRL);
1105 /* Go to LAN Page and zero all filter bits */
1106 /* Zero accept error, accept multicast, accept broadcast and accept */
1107 /* all directed packet bits */
1108 hp100_andb(~(HP100_RX_EN |
1112 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1114 hp100_outb(0x00, MAC_CFG_2);
1116 /* Zero the frame format bit. This works around a training bug in the */
1118 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1120 if (lp->priority_tx)
1121 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1123 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1125 hp100_outb(HP100_ADV_NXT_PKT |
1126 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1128 /* If busmaster, initialize the PDLs */
1130 hp100_init_pdls(dev);
1132 /* Go to performance page and initalize isr and imr registers */
1133 hp100_page(PERFORMANCE);
1134 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1135 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1139 * open/close functions
1142 static int hp100_open(struct net_device *dev)
1144 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1145 #ifdef HP100_DEBUG_B
1146 int ioaddr = dev->base_addr;
1149 #ifdef HP100_DEBUG_B
1150 hp100_outw(0x4204, TRACE);
1151 printk("hp100: %s: open\n", dev->name);
1154 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1155 if (request_irq(dev->irq, hp100_interrupt,
1156 lp->bus == HP100_BUS_PCI || lp->bus ==
1157 HP100_BUS_EISA ? SA_SHIRQ : SA_INTERRUPT,
1158 lp->id->name, dev)) {
1159 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1163 dev->trans_start = jiffies;
1164 netif_start_queue(dev);
1166 lp->lan_type = hp100_sense_lan(dev);
1167 lp->mac1_mode = HP100_MAC1MODE3;
1168 lp->mac2_mode = HP100_MAC2MODE3;
1169 memset(&lp->hash_bytes, 0x00, 8);
1171 hp100_stop_interface(dev);
1175 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1180 /* The close function is called when the interface is to be brought down */
1181 static int hp100_close(struct net_device *dev)
1183 int ioaddr = dev->base_addr;
1184 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1186 #ifdef HP100_DEBUG_B
1187 hp100_outw(0x4205, TRACE);
1188 printk("hp100: %s: close\n", dev->name);
1191 hp100_page(PERFORMANCE);
1192 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1194 hp100_stop_interface(dev);
1196 if (lp->lan_type == HP100_LAN_100)
1197 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
1199 netif_stop_queue(dev);
1201 free_irq(dev->irq, dev);
1204 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1205 hp100_inw(OPTION_LSW));
1213 * Configure the PDL Rx rings and LAN
1215 static void hp100_init_pdls(struct net_device *dev)
1217 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1218 hp100_ring_t *ringptr;
1219 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1222 #ifdef HP100_DEBUG_B
1223 int ioaddr = dev->base_addr;
1226 #ifdef HP100_DEBUG_B
1227 hp100_outw(0x4206, TRACE);
1228 printk("hp100: %s: init pdls\n", dev->name);
1231 if (0 == lp->page_vaddr_algn)
1232 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1234 /* pageptr shall point into the DMA accessible memory region */
1235 /* we use this pointer to status the upper limit of allocated */
1236 /* memory in the allocated page. */
1237 /* note: align the pointers to the pci cache line size */
1238 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1239 pageptr = lp->page_vaddr_algn;
1242 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1244 /* Initialise Rx Ring */
1245 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1246 lp->rxring[i].next = ringptr;
1247 ringptr = &(lp->rxring[i]);
1248 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1251 /* Initialise Tx Ring */
1253 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1254 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1255 lp->txring[i].next = ringptr;
1256 ringptr = &(lp->txring[i]);
1257 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1263 /* These functions "format" the entries in the pdl structure */
1264 /* They return how much memory the fragments need. */
1265 static int hp100_init_rxpdl(struct net_device *dev,
1266 register hp100_ring_t * ringptr,
1267 register u32 * pdlptr)
1269 /* pdlptr is starting address for this pdl */
1271 if (0 != (((unsigned) pdlptr) & 0xf))
1272 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%x.\n",
1273 dev->name, (unsigned) pdlptr);
1275 ringptr->pdl = pdlptr + 1;
1276 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1277 ringptr->skb = (void *) NULL;
1280 * Write address and length of first PDL Fragment (which is used for
1281 * storing the RX-Header
1282 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1283 * store this information. (PDH is at offset 0x04)
1285 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1287 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1288 *(pdlptr + 3) = 4; /* Length Frag 1 */
1290 return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
1294 static int hp100_init_txpdl(struct net_device *dev,
1295 register hp100_ring_t * ringptr,
1296 register u32 * pdlptr)
1298 if (0 != (((unsigned) pdlptr) & 0xf))
1299 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%x.\n", dev->name, (unsigned) pdlptr);
1301 ringptr->pdl = pdlptr; /* +1; */
1302 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1303 ringptr->skb = (void *) NULL;
1305 return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
1309 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1310 * for possible odd word alignment rounding up to next dword and set PDL
1311 * address for fragment#2
1312 * Returns: 0 if unable to allocate skb_buff
1315 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1316 struct net_device *dev)
1318 #ifdef HP100_DEBUG_B
1319 int ioaddr = dev->base_addr;
1321 #ifdef HP100_DEBUG_BM
1325 #ifdef HP100_DEBUG_B
1326 hp100_outw(0x4207, TRACE);
1327 printk("hp100: %s: build rx pdl\n", dev->name);
1330 /* Allocate skb buffer of maximum size */
1331 /* Note: This depends on the alloc_skb functions allocating more
1332 * space than requested, i.e. aligning to 16bytes */
1334 ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
1336 if (NULL != ringptr->skb) {
1338 * Reserve 2 bytes at the head of the buffer to land the IP header
1339 * on a long word boundary (According to the Network Driver section
1340 * in the Linux KHG, this should help to increase performance.)
1342 skb_reserve(ringptr->skb, 2);
1344 ringptr->skb->dev = dev;
1345 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1347 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1348 /* Note: 1st Fragment is used for the 4 byte packet status
1349 * (receive header). Its PDL entries are set up by init_rxpdl. So
1350 * here we only have to set up the PDL fragment entries for the data
1351 * part. Those 4 bytes will be stored in the DMA memory region
1352 * directly before the PDL.
1354 #ifdef HP100_DEBUG_BM
1355 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1356 dev->name, (u_int) ringptr->pdl,
1357 ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
1358 (unsigned int) ringptr->skb->data);
1361 /* Conversion to new PCI API : map skbuf data to PCI bus.
1362 * Doc says it's OK for EISA as well - Jean II */
1363 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1364 ringptr->pdl[3] = ((u_int) pci_map_single(((struct hp100_private *) (dev->priv))->pci_dev, ringptr->skb->data, MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE));
1365 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1367 #ifdef HP100_DEBUG_BM
1368 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1369 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1374 /* alloc_skb failed (no memory) -> still can receive the header
1375 * fragment into PDL memory. make PDL safe by clearing msgptr and
1376 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1378 #ifdef HP100_DEBUG_BM
1379 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1382 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1388 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1390 * Makes assumption that skb's are always contiguous memory areas and
1391 * therefore PDLs contain only 2 physical fragments.
1392 * - While the number of Rx PDLs with buffers is less than maximum
1393 * a. Get a maximum packet size skb
1394 * b. Put the physical address of the buffer into the PDL.
1395 * c. Output physical address of PDL to adapter.
1397 static void hp100_rxfill(struct net_device *dev)
1399 int ioaddr = dev->base_addr;
1401 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1402 hp100_ring_t *ringptr;
1404 #ifdef HP100_DEBUG_B
1405 hp100_outw(0x4208, TRACE);
1406 printk("hp100: %s: rxfill\n", dev->name);
1409 hp100_page(PERFORMANCE);
1411 while (lp->rxrcommit < MAX_RX_PDL) {
1413 ** Attempt to get a buffer and build a Rx PDL.
1415 ringptr = lp->rxrtail;
1416 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1417 return; /* None available, return */
1420 /* Hand this PDL over to the card */
1421 /* Note: This needs performance page selected! */
1422 #ifdef HP100_DEBUG_BM
1423 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1424 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1425 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1428 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1431 lp->rxrtail = ringptr->next;
1436 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1439 static void hp100_BM_shutdown(struct net_device *dev)
1441 int ioaddr = dev->base_addr;
1442 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1445 #ifdef HP100_DEBUG_B
1446 hp100_outw(0x4209, TRACE);
1447 printk("hp100: %s: bm shutdown\n", dev->name);
1450 hp100_page(PERFORMANCE);
1451 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1452 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1454 /* Ensure Interrupts are off */
1455 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1457 /* Disable all MAC activity */
1458 hp100_page(MAC_CTRL);
1459 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1461 /* If cascade MMU is not already in reset */
1462 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1463 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1464 * MMU pointers will not be reset out from underneath
1466 hp100_page(MAC_CTRL);
1467 for (time = 0; time < 5000; time++) {
1468 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1472 /* Shutdown algorithm depends on the generation of Cascade */
1473 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1474 /* Disable Busmaster mode and wait for bit to go to zero. */
1476 hp100_andb(~HP100_BM_MASTER, BM);
1477 /* 100 ms timeout */
1478 for (time = 0; time < 32000; time++) {
1479 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1482 } else { /* Shasta or Rainier Shutdown/Reset */
1483 /* To ensure all bus master inloading activity has ceased,
1484 * wait for no Rx PDAs or no Rx packets on card.
1486 hp100_page(PERFORMANCE);
1487 /* 100 ms timeout */
1488 for (time = 0; time < 10000; time++) {
1489 /* RX_PDL: PDLs not executed. */
1490 /* RX_PKT_CNT: RX'd packets on card. */
1491 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1496 printk("hp100: %s: BM shutdown error.\n", dev->name);
1498 /* To ensure all bus master outloading activity has ceased,
1499 * wait until the Tx PDA count goes to zero or no more Tx space
1500 * available in the Tx region of the card.
1502 /* 100 ms timeout */
1503 for (time = 0; time < 10000; time++) {
1504 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1505 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1509 /* Disable Busmaster mode */
1511 hp100_andb(~HP100_BM_MASTER, BM);
1512 } /* end of shutdown procedure for non-etr parts */
1514 hp100_cascade_reset(dev, TRUE);
1516 hp100_page(PERFORMANCE);
1517 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1518 /* Busmaster mode should be shut down now. */
1522 * transmit functions
1525 /* tx function for busmaster mode */
1526 static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1528 unsigned long flags;
1530 int ioaddr = dev->base_addr;
1531 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1532 hp100_ring_t *ringptr;
1534 #ifdef HP100_DEBUG_B
1535 hp100_outw(0x4210, TRACE);
1536 printk("hp100: %s: start_xmit_bm\n", dev->name);
1546 /* Get Tx ring tail pointer */
1547 if (lp->txrtail->next == lp->txrhead) {
1550 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1552 /* not waited long enough since last tx? */
1553 if (jiffies - dev->trans_start < HZ)
1556 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1557 hp100_stop_interface(dev);
1558 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1559 printk("hp100: %s: no connection found - check wire\n", dev->name);
1560 hp100_start_interface(dev); /* 10Mb/s RX pkts maybe handled */
1563 if (lp->lan_type == HP100_LAN_100)
1564 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE); /* relogin */
1565 hp100_start_interface(dev);
1568 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1569 /* we have a 100Mb/s adapter but it isn't connected to hub */
1570 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1571 hp100_stop_interface(dev);
1572 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
1573 hp100_start_interface(dev);
1575 spin_lock_irqsave(&lp->lock, flags);
1576 hp100_ints_off(); /* Useful ? Jean II */
1577 i = hp100_sense_lan(dev);
1579 spin_unlock_irqrestore(&lp->lock, flags);
1580 if (i == HP100_LAN_ERR)
1581 printk("hp100: %s: link down detected\n", dev->name);
1582 else if (lp->lan_type != i) { /* cable change! */
1583 /* it's very hard - all network setting must be changed!!! */
1584 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1586 hp100_stop_interface(dev);
1587 if (lp->lan_type == HP100_LAN_100)
1588 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
1589 hp100_start_interface(dev);
1591 printk("hp100: %s: interface reset\n", dev->name);
1592 hp100_stop_interface(dev);
1593 if (lp->lan_type == HP100_LAN_100)
1594 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
1595 hp100_start_interface(dev);
1599 dev->trans_start = jiffies;
1604 * we have to turn int's off before modifying this, otherwise
1605 * a tx_pdl_cleanup could occur at the same time
1607 spin_lock_irqsave(&lp->lock, flags);
1608 ringptr = lp->txrtail;
1609 lp->txrtail = ringptr->next;
1611 /* Check whether packet has minimal packet size */
1612 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1613 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1616 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1617 if (lp->chip == HP100_CHIPID_SHASTA) {
1618 /* TODO:Could someone who has the EISA card please check if this works? */
1619 ringptr->pdl[2] = i;
1620 } else { /* Lassen */
1621 /* In the PDL, don't use the padded size but the real packet size: */
1622 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1624 /* Conversion to new PCI API : map skbuf data to PCI bus.
1625 * Doc says it's OK for EISA as well - Jean II */
1626 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1628 /* Hand this PDL to the card. */
1629 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1632 spin_unlock_irqrestore(&lp->lock, flags);
1634 /* Update statistics */
1635 lp->stats.tx_packets++;
1636 lp->stats.tx_bytes += skb->len;
1637 dev->trans_start = jiffies;
1643 /* clean_txring checks if packets have been sent by the card by reading
1644 * the TX_PDL register from the performance page and comparing it to the
1645 * number of commited packets. It then frees the skb's of the packets that
1646 * obviously have been sent to the network.
1648 * Needs the PERFORMANCE page selected.
1650 static void hp100_clean_txring(struct net_device *dev)
1652 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1653 int ioaddr = dev->base_addr;
1656 #ifdef HP100_DEBUG_B
1657 hp100_outw(0x4211, TRACE);
1658 printk("hp100: %s: clean txring\n", dev->name);
1661 /* How many PDLs have been transmitted? */
1662 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1665 if (donecount > MAX_TX_PDL)
1666 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1669 for (; 0 != donecount; donecount--) {
1670 #ifdef HP100_DEBUG_BM
1671 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1672 dev->name, (u_int) lp->txrhead->skb->data,
1673 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1675 /* Conversion to new PCI API : NOP */
1676 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1677 dev_kfree_skb_any(lp->txrhead->skb);
1678 lp->txrhead->skb = (void *) NULL;
1679 lp->txrhead = lp->txrhead->next;
1684 /* tx function for slave modes */
1685 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1687 unsigned long flags;
1689 int ioaddr = dev->base_addr;
1691 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1693 #ifdef HP100_DEBUG_B
1694 hp100_outw(0x4212, TRACE);
1695 printk("hp100: %s: start_xmit\n", dev->name);
1705 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1706 hp100_stop_interface(dev);
1707 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1708 printk("hp100: %s: no connection found - check wire\n", dev->name);
1709 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1712 if (lp->lan_type == HP100_LAN_100)
1713 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE); /* relogin */
1714 hp100_start_interface(dev);
1717 /* If there is not enough free memory on the card... */
1718 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1719 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1721 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1723 /* not waited long enough since last failed tx try? */
1724 if (jiffies - dev->trans_start < HZ) {
1726 printk("hp100: %s: trans_start timing problem\n",
1731 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1732 /* we have a 100Mb/s adapter but it isn't connected to hub */
1733 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1734 hp100_stop_interface(dev);
1735 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
1736 hp100_start_interface(dev);
1738 spin_lock_irqsave(&lp->lock, flags);
1739 hp100_ints_off(); /* Useful ? Jean II */
1740 i = hp100_sense_lan(dev);
1742 spin_unlock_irqrestore(&lp->lock, flags);
1743 if (i == HP100_LAN_ERR)
1744 printk("hp100: %s: link down detected\n", dev->name);
1745 else if (lp->lan_type != i) { /* cable change! */
1746 /* it's very hard - all network setting must be changed!!! */
1747 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1749 hp100_stop_interface(dev);
1750 if (lp->lan_type == HP100_LAN_100)
1751 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
1752 hp100_start_interface(dev);
1754 printk("hp100: %s: interface reset\n", dev->name);
1755 hp100_stop_interface(dev);
1756 if (lp->lan_type == HP100_LAN_100)
1757 lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
1758 hp100_start_interface(dev);
1762 dev->trans_start = jiffies;
1766 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1767 #ifdef HP100_DEBUG_TX
1768 printk("hp100: %s: start_xmit: busy\n", dev->name);
1772 spin_lock_irqsave(&lp->lock, flags);
1774 val = hp100_inw(IRQ_STATUS);
1775 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1776 * when the current packet being transmitted on the wire is completed. */
1777 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1778 #ifdef HP100_DEBUG_TX
1779 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1780 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1783 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1784 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1786 hp100_outw(i, DATA32); /* tell card the total packet length */
1787 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1789 if (lp->mode == 2) { /* memory mapped */
1790 if (lp->mem_ptr_virt) { /* high pci memory was remapped */
1791 /* Note: The J2585B needs alignment to 32bits here! */
1792 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1794 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1796 /* Note: The J2585B needs alignment to 32bits here! */
1797 isa_memcpy_toio(lp->mem_ptr_phys, skb->data, (skb->len + 3) & ~3);
1799 isa_memset_io(lp->mem_ptr_phys, 0, HP100_MIN_PACKET_SIZE - skb->len);
1801 } else { /* programmed i/o */
1802 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1803 (skb->len + 3) >> 2);
1805 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1806 hp100_outl(0, DATA32);
1809 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1811 lp->stats.tx_packets++;
1812 lp->stats.tx_bytes += skb->len;
1813 dev->trans_start = jiffies;
1815 spin_unlock_irqrestore(&lp->lock, flags);
1817 dev_kfree_skb_any(skb);
1819 #ifdef HP100_DEBUG_TX
1820 printk("hp100: %s: start_xmit: end\n", dev->name);
1828 * Receive Function (Non-Busmaster mode)
1829 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1830 * packet counter is non-zero.
1831 * For non-busmaster, this function does the whole work of transfering
1832 * the packet to the host memory and then up to higher layers via skb
1836 static void hp100_rx(struct net_device *dev)
1838 int packets, pkt_len;
1839 int ioaddr = dev->base_addr;
1840 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1842 struct sk_buff *skb;
1845 hp100_outw(0x4213, TRACE);
1846 printk("hp100: %s: rx\n", dev->name);
1849 /* First get indication of received lan packet */
1850 /* RX_PKT_CND indicates the number of packets which have been fully */
1851 /* received onto the card but have not been fully transferred of the card */
1852 packets = hp100_inb(RX_PKT_CNT);
1853 #ifdef HP100_DEBUG_RX
1855 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1858 while (packets-- > 0) {
1859 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1860 /* really advanced to the next packet. */
1861 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1862 #ifdef HP100_DEBUG_RX
1863 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1867 /* First we get the header, which contains information about the */
1868 /* actual length of the received packet. */
1869 if (lp->mode == 2) { /* memory mapped mode */
1870 if (lp->mem_ptr_virt) /* if memory was remapped */
1871 header = readl(lp->mem_ptr_virt);
1873 header = isa_readl(lp->mem_ptr_phys);
1874 } else /* programmed i/o */
1875 header = hp100_inl(DATA32);
1877 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1879 #ifdef HP100_DEBUG_RX
1880 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1881 dev->name, header & HP100_PKT_LEN_MASK,
1882 (header >> 16) & 0xfff8, (header >> 16) & 7);
1885 /* Now we allocate the skb and transfer the data into it. */
1886 skb = dev_alloc_skb(pkt_len+2);
1887 if (skb == NULL) { /* Not enough memory->drop packet */
1889 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1890 dev->name, pkt_len);
1892 lp->stats.rx_dropped++;
1893 } else { /* skb successfully allocated */
1900 /* ptr to start of the sk_buff data area */
1901 skb_put(skb, pkt_len);
1904 /* Now transfer the data from the card into that area */
1905 if (lp->mode == 2) {
1906 if (lp->mem_ptr_virt)
1907 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1908 /* Note alignment to 32bit transfers */
1910 isa_memcpy_fromio(ptr, lp->mem_ptr_phys, pkt_len);
1911 } else /* io mapped */
1912 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1914 skb->protocol = eth_type_trans(skb, dev);
1916 #ifdef HP100_DEBUG_RX
1917 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1918 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1919 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1920 ptr[9], ptr[10], ptr[11]);
1923 dev->last_rx = jiffies;
1924 lp->stats.rx_packets++;
1925 lp->stats.rx_bytes += pkt_len;
1928 /* Indicate the card that we have got the packet */
1929 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1931 switch (header & 0x00070000) {
1932 case (HP100_MULTI_ADDR_HASH << 16):
1933 case (HP100_MULTI_ADDR_NO_HASH << 16):
1934 lp->stats.multicast++;
1937 } /* end of while(there are packets) loop */
1938 #ifdef HP100_DEBUG_RX
1939 printk("hp100_rx: %s: end\n", dev->name);
1944 * Receive Function for Busmaster Mode
1946 static void hp100_rx_bm(struct net_device *dev)
1948 int ioaddr = dev->base_addr;
1949 struct hp100_private *lp = (struct hp100_private *) dev->priv;
1954 #ifdef HP100_DEBUG_B
1955 hp100_outw(0x4214, TRACE);
1956 printk("hp100: %s: rx_bm\n", dev->name);
1960 if (0 == lp->rxrcommit) {
1961 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1964 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1965 * the cards BM engine */
1966 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1967 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1968 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1974 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1976 * The packet was received into the pdl pointed to by lp->rxrhead (
1977 * the oldest pdl in the ring
1980 /* First we get the header, which contains information about the */
1981 /* actual length of the received packet. */
1985 header = *(ptr->pdl - 1);
1986 pkt_len = (header & HP100_PKT_LEN_MASK);
1988 /* Conversion to new PCI API : NOP */
1989 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1991 #ifdef HP100_DEBUG_BM
1992 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1993 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1994 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1995 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",
1996 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1997 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1998 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
2001 if ((pkt_len >= MIN_ETHER_SIZE) &&
2002 (pkt_len <= MAX_ETHER_SIZE)) {
2003 if (ptr->skb == NULL) {
2004 printk("hp100: %s: rx_bm: skb null\n", dev->name);
2005 /* can happen if we only allocated room for the pdh due to memory shortage. */
2006 lp->stats.rx_dropped++;
2008 skb_trim(ptr->skb, pkt_len); /* Shorten it */
2009 ptr->skb->protocol =
2010 eth_type_trans(ptr->skb, dev);
2012 netif_rx(ptr->skb); /* Up and away... */
2014 dev->last_rx = jiffies;
2015 lp->stats.rx_packets++;
2016 lp->stats.rx_bytes += pkt_len;
2019 switch (header & 0x00070000) {
2020 case (HP100_MULTI_ADDR_HASH << 16):
2021 case (HP100_MULTI_ADDR_NO_HASH << 16):
2022 lp->stats.multicast++;
2027 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
2029 if (ptr->skb != NULL)
2030 dev_kfree_skb_any(ptr->skb);
2031 lp->stats.rx_errors++;
2034 lp->rxrhead = lp->rxrhead->next;
2036 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
2037 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
2038 /* No space for skb, header can still be received. */
2040 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
2043 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
2044 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
2045 lp->rxrtail = lp->rxrtail->next;
2054 static hp100_stats_t *hp100_get_stats(struct net_device *dev)
2056 unsigned long flags;
2057 int ioaddr = dev->base_addr;
2058 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2060 #ifdef HP100_DEBUG_B
2061 hp100_outw(0x4215, TRACE);
2064 spin_lock_irqsave(&lp->lock, flags);
2065 hp100_ints_off(); /* Useful ? Jean II */
2066 hp100_update_stats(dev);
2068 spin_unlock_irqrestore(&lp->lock, flags);
2069 return &(lp->stats);
2072 static void hp100_update_stats(struct net_device *dev)
2074 int ioaddr = dev->base_addr;
2076 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2078 #ifdef HP100_DEBUG_B
2079 hp100_outw(0x4216, TRACE);
2080 printk("hp100: %s: update-stats\n", dev->name);
2083 /* Note: Statistics counters clear when read. */
2084 hp100_page(MAC_CTRL);
2085 val = hp100_inw(DROPPED) & 0x0fff;
2086 lp->stats.rx_errors += val;
2087 lp->stats.rx_over_errors += val;
2088 val = hp100_inb(CRC);
2089 lp->stats.rx_errors += val;
2090 lp->stats.rx_crc_errors += val;
2091 val = hp100_inb(ABORT);
2092 lp->stats.tx_errors += val;
2093 lp->stats.tx_aborted_errors += val;
2094 hp100_page(PERFORMANCE);
2097 static void hp100_misc_interrupt(struct net_device *dev)
2099 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2101 #ifdef HP100_DEBUG_B
2102 hp100_outw(0x4216, TRACE);
2103 printk("hp100: %s: misc_interrupt\n", dev->name);
2106 /* Note: Statistics counters clear when read. */
2107 lp->stats.rx_errors++;
2108 lp->stats.tx_errors++;
2111 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2113 unsigned long flags;
2115 #ifdef HP100_DEBUG_B
2116 hp100_outw(0x4217, TRACE);
2117 printk("hp100: %s: clear_stats\n", dev->name);
2120 spin_lock_irqsave(&lp->lock, flags);
2121 hp100_page(MAC_CTRL); /* get all statistics bytes */
2125 hp100_page(PERFORMANCE);
2126 spin_unlock_irqrestore(&lp->lock, flags);
2135 * Set or clear the multicast filter for this adapter.
2138 static void hp100_set_multicast_list(struct net_device *dev)
2140 unsigned long flags;
2141 int ioaddr = dev->base_addr;
2142 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2144 #ifdef HP100_DEBUG_B
2145 hp100_outw(0x4218, TRACE);
2146 printk("hp100: %s: set_mc_list\n", dev->name);
2149 spin_lock_irqsave(&lp->lock, flags);
2151 hp100_page(MAC_CTRL);
2152 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2154 if (dev->flags & IFF_PROMISC) {
2155 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2156 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2157 memset(&lp->hash_bytes, 0xff, 8);
2158 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2159 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2160 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2161 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2162 if (dev->flags & IFF_ALLMULTI) {
2163 /* set hash filter to receive all multicast packets */
2164 memset(&lp->hash_bytes, 0xff, 8);
2168 struct dev_mc_list *dmi;
2170 memset(&lp->hash_bytes, 0x00, 8);
2172 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2174 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2175 addrs = dmi->dmi_addr;
2176 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2178 printk("hp100: %s: multicast = %02x:%02x:%02x:%02x:%02x:%02x, ",
2179 dev->name, addrs[0], addrs[1], addrs[2],
2180 addrs[3], addrs[4], addrs[5]);
2182 for (j = idx = 0; j < 6; j++) {
2183 idx ^= *addrs++ & 0x3f;
2184 printk(":%02x:", idx);
2187 printk("idx = %i\n", idx);
2189 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2194 memset(&lp->hash_bytes, 0xff, 8);
2197 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2198 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2199 memset(&lp->hash_bytes, 0x00, 8);
2202 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2203 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2206 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2207 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2208 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2210 hp100_page(MAC_ADDRESS);
2211 for (i = 0; i < 8; i++)
2212 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2214 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2215 dev->name, lp->mac1_mode, lp->mac2_mode,
2216 lp->hash_bytes[0], lp->hash_bytes[1],
2217 lp->hash_bytes[2], lp->hash_bytes[3],
2218 lp->hash_bytes[4], lp->hash_bytes[5],
2219 lp->hash_bytes[6], lp->hash_bytes[7]);
2222 if (lp->lan_type == HP100_LAN_100) {
2224 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2226 lp->hub_status = hp100_login_to_vg_hub(dev, TRUE); /* force a relogin to the hub */
2230 u_char old_hash_bytes[8];
2232 hp100_page(MAC_ADDRESS);
2233 for (i = 0; i < 8; i++)
2234 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2235 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2236 for (i = 0; i < 8; i++)
2237 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2239 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2240 dev->name, lp->hash_bytes[0],
2241 lp->hash_bytes[1], lp->hash_bytes[2],
2242 lp->hash_bytes[3], lp->hash_bytes[4],
2243 lp->hash_bytes[5], lp->hash_bytes[6],
2247 if (lp->lan_type == HP100_LAN_100) {
2249 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2251 lp->hub_status = hp100_login_to_vg_hub(dev, TRUE); /* force a relogin to the hub */
2256 hp100_page(MAC_CTRL);
2257 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2258 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2260 hp100_page(PERFORMANCE);
2262 spin_unlock_irqrestore(&lp->lock, flags);
2266 * hardware interrupt handling
2269 static void hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs)
2271 struct net_device *dev = (struct net_device *) dev_id;
2272 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2279 ioaddr = dev->base_addr;
2281 spin_lock(&lp->lock);
2285 #ifdef HP100_DEBUG_B
2286 hp100_outw(0x4219, TRACE);
2289 /* hp100_page( PERFORMANCE ); */
2290 val = hp100_inw(IRQ_STATUS);
2291 #ifdef HP100_DEBUG_IRQ
2292 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2293 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2294 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2297 if (val == 0) { /* might be a shared interrupt */
2298 spin_unlock(&lp->lock);
2302 /* We're only interested in those interrupts we really enabled. */
2303 /* val &= hp100_inw( IRQ_MASK ); */
2306 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2307 * is considered executed whenever the RX_PDL data structure is no longer
2310 if (val & HP100_RX_PDL_FILL_COMPL) {
2314 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2319 * The RX_PACKET interrupt is set, when the receive packet counter is
2320 * non zero. We use this interrupt for receiving in slave mode. In
2321 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2322 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2323 * we somehow have missed a rx_pdl_fill_compl interrupt.
2326 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2327 if (lp->mode != 1) /* non busmaster */
2329 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2330 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2336 * Ack. that we have noticed the interrupt and thereby allow next one.
2337 * Note that this is now done after the slave rx function, since first
2338 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2341 hp100_outw(val, IRQ_STATUS);
2344 * RX_ERROR is set when a packet is dropped due to no memory resources on
2345 * the card or when a RCV_ERR occurs.
2346 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2347 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2349 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2350 #ifdef HP100_DEBUG_IRQ
2351 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2353 hp100_update_stats(dev);
2354 if (lp->mode == 1) {
2356 hp100_clean_txring(dev);
2361 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2363 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2367 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2370 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2371 hp100_clean_txring(dev);
2374 * MISC_ERROR is set when either the LAN link goes down or a detected
2377 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2378 #ifdef HP100_DEBUG_IRQ
2380 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2383 if (lp->mode == 1) {
2384 hp100_clean_txring(dev);
2387 hp100_misc_interrupt(dev);
2390 spin_unlock(&lp->lock);
2395 * some misc functions
2398 static void hp100_start_interface(struct net_device *dev)
2400 unsigned long flags;
2401 int ioaddr = dev->base_addr;
2402 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2404 #ifdef HP100_DEBUG_B
2405 hp100_outw(0x4220, TRACE);
2406 printk("hp100: %s: hp100_start_interface\n", dev->name);
2409 spin_lock_irqsave(&lp->lock, flags);
2411 /* Ensure the adapter does not want to request an interrupt when */
2412 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2413 hp100_page(PERFORMANCE);
2414 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2415 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2416 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2418 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2419 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2421 if (lp->mode == 1) {
2422 /* Make sure BM bit is set... */
2424 hp100_orb(HP100_BM_MASTER, BM);
2426 } else if (lp->mode == 2) {
2427 /* Enable memory mapping. Note: Don't do this when busmaster. */
2428 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2431 hp100_page(PERFORMANCE);
2432 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2433 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2435 /* enable a few interrupts: */
2436 if (lp->mode == 1) { /* busmaster mode */
2437 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2438 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2439 /* HP100_RX_PACKET | */
2440 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2441 /* HP100_TX_PDA_ZERO | */
2443 /* HP100_MISC_ERROR | */
2444 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2446 hp100_outw(HP100_RX_PACKET |
2447 HP100_RX_ERROR | HP100_SET_HB |
2448 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2451 /* Note : before hp100_set_multicast_list(), because it will play with
2452 * spinlock itself... Jean II */
2453 spin_unlock_irqrestore(&lp->lock, flags);
2455 /* Enable MAC Tx and RX, set MAC modes, ... */
2456 hp100_set_multicast_list(dev);
2459 static void hp100_stop_interface(struct net_device *dev)
2461 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2462 int ioaddr = dev->base_addr;
2465 #ifdef HP100_DEBUG_B
2466 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2467 hp100_outw(0x4221, TRACE);
2471 hp100_BM_shutdown(dev);
2473 /* Note: MMAP_DIS will be reenabled by start_interface */
2474 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2475 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2477 val = hp100_inw(OPTION_LSW);
2479 hp100_page(MAC_CTRL);
2480 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2482 if (!(val & HP100_HW_RST))
2483 return; /* If reset, imm. return ... */
2484 /* ... else: busy wait until idle */
2485 for (val = 0; val < 6000; val++)
2486 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2487 hp100_page(PERFORMANCE);
2490 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2491 hp100_page(PERFORMANCE);
2495 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2498 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2500 #ifdef HP100_DEBUG_B
2501 hp100_outw(0x4222, TRACE);
2504 hp100_page(EEPROM_CTRL);
2505 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2506 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2507 for (i = 0; i < 10000; i++)
2508 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2510 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2513 /* Sense connection status.
2514 * return values: LAN_10 - Connected to 10Mbit/s network
2515 * LAN_100 - Connected to 100Mbit/s network
2516 * LAN_ERR - not connected or 100Mbit/s Hub down
2518 static int hp100_sense_lan(struct net_device *dev)
2520 int ioaddr = dev->base_addr;
2521 u_short val_VG, val_10;
2522 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2524 #ifdef HP100_DEBUG_B
2525 hp100_outw(0x4223, TRACE);
2528 hp100_page(MAC_CTRL);
2529 val_10 = hp100_inb(10_LAN_CFG_1);
2530 val_VG = hp100_inb(VG_LAN_CFG_1);
2531 hp100_page(PERFORMANCE);
2533 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2534 dev->name, val_VG, val_10);
2537 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2538 return HP100_LAN_10;
2540 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2541 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2542 hp100_page(MAC_CTRL);
2543 hp100_outb(val_10, 10_LAN_CFG_1);
2544 hp100_page(PERFORMANCE);
2545 return HP100_LAN_10;
2548 if ((lp->id->id == 0x02019F022) ||
2549 (lp->id->id == 0x01042103c) || (lp->id->id == 0x01040103c))
2550 return HP100_LAN_ERR; /* Those cards don't have a 100 Mbit connector */
2552 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2553 return HP100_LAN_100;
2554 return HP100_LAN_ERR;
2557 static int hp100_down_vg_link(struct net_device *dev)
2559 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2560 int ioaddr = dev->base_addr;
2562 long savelan, newlan;
2564 #ifdef HP100_DEBUG_B
2565 hp100_outw(0x4224, TRACE);
2566 printk("hp100: %s: down_vg_link\n", dev->name);
2569 hp100_page(MAC_CTRL);
2570 time = jiffies + (HZ / 4);
2572 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2574 if (!in_interrupt()) {
2575 set_current_state(TASK_INTERRUPTIBLE);
2576 schedule_timeout(1);
2578 } while (time_after(time, jiffies));
2580 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2583 /* Drop the VG Link by clearing the link up cmd and load addr. */
2585 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2586 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2588 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2589 time = jiffies + (HZ / 2);
2591 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2593 if (!in_interrupt()) {
2594 set_current_state(TASK_INTERRUPTIBLE);
2595 schedule_timeout(1);
2597 } while (time_after(time, jiffies));
2600 if (time_after_eq(jiffies, time))
2601 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2604 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2605 /* logout under traffic (even though all the status bits are cleared), */
2606 /* do this workaround to get the Rev 1 MAC in its idle state */
2607 if (lp->chip == HP100_CHIPID_LASSEN) {
2608 /* Reset VG MAC to insure it leaves the logoff state even if */
2609 /* the Hub is still emitting tones */
2610 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2611 udelay(1500); /* wait for >1ms */
2612 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2616 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2617 /* to get the VG mac to full reset. This is not req.d with later chips */
2618 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2619 /* selected again! This will be left to the connect hub function to */
2620 /* perform if desired. */
2621 if (lp->chip == HP100_CHIPID_LASSEN) {
2622 /* Have to write to 10 and 100VG control registers simultaneously */
2623 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2624 newlan &= ~(HP100_VG_SEL << 16);
2625 newlan |= (HP100_DOT3_MAC) << 8;
2626 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2627 hp100_outl(newlan, 10_LAN_CFG_1);
2629 /* Conditionally stall for 5sec on VG selected. */
2630 time = jiffies + (HZ * 5);
2632 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2634 if (!in_interrupt()) {
2635 set_current_state(TASK_INTERRUPTIBLE);
2636 schedule_timeout(1);
2638 } while (time_after(time, jiffies));
2640 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2641 hp100_outl(savelan, 10_LAN_CFG_1);
2644 time = jiffies + (3 * HZ); /* Timeout 3s */
2646 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2648 if (!in_interrupt()) {
2649 set_current_state(TASK_INTERRUPTIBLE);
2650 schedule_timeout(1);
2652 } while (time_after(time, jiffies));
2654 if (time_before_eq(time, jiffies)) {
2656 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2661 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2663 if (!in_interrupt()) {
2664 set_current_state(TASK_INTERRUPTIBLE);
2665 schedule_timeout(1);
2667 } while (time_after(time, jiffies));
2672 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2674 int ioaddr = dev->base_addr;
2675 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2680 #ifdef HP100_DEBUG_B
2681 hp100_outw(0x4225, TRACE);
2682 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2685 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2686 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2687 * promiscuous mode change)
2689 hp100_page(MAC_CTRL);
2690 startst = hp100_inb(VG_LAN_CFG_1);
2691 if ((force_relogin == TRUE) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2692 #ifdef HP100_DEBUG_TRAINING
2693 printk("hp100: %s: Start training\n", dev->name);
2696 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2697 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2699 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2700 /* entry then temporarily put them into force 100Mbit mode */
2701 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2702 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2704 /* Drop the VG link by zeroing Link Up Command and Load Address */
2705 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2707 #ifdef HP100_DEBUG_TRAINING
2708 printk("hp100: %s: Bring down the link\n", dev->name);
2711 /* Wait for link to drop */
2712 time = jiffies + (HZ / 10);
2714 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2716 if (!in_interrupt()) {
2717 set_current_state(TASK_INTERRUPTIBLE);
2718 schedule_timeout(1);
2720 } while (time_after(time, jiffies));
2722 /* Start an addressed training and optionally request promiscuous port */
2723 if ((dev->flags) & IFF_PROMISC) {
2724 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2725 if (lp->chip == HP100_CHIPID_LASSEN)
2726 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2728 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2729 /* For ETR parts we need to reset the prom. bit in the training
2730 * register, otherwise promiscious mode won't be disabled.
2732 if (lp->chip == HP100_CHIPID_LASSEN) {
2733 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2737 /* With ETR parts, frame format request bits can be set. */
2738 if (lp->chip == HP100_CHIPID_LASSEN)
2739 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2741 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2743 /* Note: Next wait could be omitted for Hood and earlier chips under */
2744 /* certain circumstances */
2745 /* TODO: check if hood/earlier and skip wait. */
2747 /* Wait for either short timeout for VG tones or long for login */
2748 /* Wait for the card hardware to signalise link cable status ok... */
2749 hp100_page(MAC_CTRL);
2750 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2752 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2754 if (!in_interrupt()) {
2755 set_current_state(TASK_INTERRUPTIBLE);
2756 schedule_timeout(1);
2758 } while (time_before(jiffies, time));
2760 if (time_after_eq(jiffies, time)) {
2761 #ifdef HP100_DEBUG_TRAINING
2762 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2765 #ifdef HP100_DEBUG_TRAINING
2767 ("hp100: %s: HUB tones detected. Trying to train.\n",
2771 time = jiffies + (2 * HZ); /* again a timeout */
2773 val = hp100_inb(VG_LAN_CFG_1);
2774 if ((val & (HP100_LINK_UP_ST))) {
2775 #ifdef HP100_DEBUG_TRAINING
2776 printk("hp100: %s: Passed training.\n", dev->name);
2780 if (!in_interrupt()) {
2781 set_current_state(TASK_INTERRUPTIBLE);
2782 schedule_timeout(1);
2784 } while (time_after(time, jiffies));
2787 /* If LINK_UP_ST is set, then we are logged into the hub. */
2788 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2789 #ifdef HP100_DEBUG_TRAINING
2790 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2791 if (lp->chip == HP100_CHIPID_LASSEN) {
2792 val = hp100_inw(TRAIN_ALLOW);
2793 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2794 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2795 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2796 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2800 /* If LINK_UP_ST is not set, login was not successful */
2801 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2802 if (lp->chip == HP100_CHIPID_LASSEN) {
2803 /* Check allowed Register to find out why there is a problem. */
2804 val = hp100_inw(TRAIN_ALLOW); /* wont work on non-ETR card */
2805 #ifdef HP100_DEBUG_TRAINING
2806 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2808 if (val & HP100_MALLOW_ACCDENIED)
2809 printk("hp100: %s: HUB access denied.\n", dev->name);
2810 if (val & HP100_MALLOW_CONFIGURE)
2811 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2812 if (val & HP100_MALLOW_DUPADDR)
2813 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2817 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2818 /* to auto-select mode */
2820 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2821 hp100_page(MAC_CTRL);
2822 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2825 val = hp100_inb(VG_LAN_CFG_1);
2827 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2828 hp100_page(PERFORMANCE);
2829 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2831 if (val & HP100_LINK_UP_ST)
2832 return (0); /* login was ok */
2834 printk("hp100: %s: Training failed.\n", dev->name);
2835 hp100_down_vg_link(dev);
2839 /* no forced relogin & already link there->no training. */
2843 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2845 int ioaddr = dev->base_addr;
2846 struct hp100_private *lp = (struct hp100_private *) dev->priv;
2848 #ifdef HP100_DEBUG_B
2849 hp100_outw(0x4226, TRACE);
2850 printk("hp100: %s: cascade_reset\n", dev->name);
2853 if (enable == TRUE) {
2854 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2855 if (lp->chip == HP100_CHIPID_LASSEN) {
2856 /* Lassen requires a PCI transmit fifo reset */
2858 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2859 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2860 /* Wait for min. 300 ns */
2861 /* we cant use jiffies here, because it may be */
2862 /* that we have disabled the timer... */
2864 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2865 hp100_page(PERFORMANCE);
2867 } else { /* bring out of reset */
2868 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2870 hp100_page(PERFORMANCE);
2875 void hp100_RegisterDump(struct net_device *dev)
2877 int ioaddr = dev->base_addr;
2881 /* Dump common registers */
2882 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2883 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2884 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2885 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2886 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2888 /* Dump paged registers */
2889 for (Page = 0; Page < 8; Page++) {
2890 /* Dump registers */
2891 printk("page: 0x%.2x\n", Page);
2892 outw(Page, ioaddr + 0x02);
2893 for (Register = 0x8; Register < 0x22; Register += 2) {
2894 /* Display Register contents except data port */
2895 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2896 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2900 hp100_page(PERFORMANCE);
2911 MODULE_LICENSE("GPL");
2912 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, "
2913 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2914 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2917 * Note: if you have more than five 100vg cards in your pc, feel free to
2918 * increase this value
2921 #define HP100_DEVICES 5
2924 * Note: to register three eisa or pci devices, use:
2925 * option hp100 hp100_port=0,0,0
2926 * to register one card at io 0x280 as eth239, use:
2927 * option hp100 hp100_port=0x280 hp100_name=eth239
2930 /* Parameters set by insmod */
2931 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2932 MODULE_PARM(hp100_port, "1-" __MODULE_STRING(HP100_DEVICES) "i");
2934 /* Allocate HP100_DEVICES strings of length IFNAMSIZ, one string for each device */
2935 static char hp100_name[HP100_DEVICES][IFNAMSIZ] = { "", "", "", "", "" };
2936 /* Allow insmod to write those HP100_DEVICES strings individually */
2937 MODULE_PARM(hp100_name, "1-" __MODULE_STRING(HP100_DEVICES) "c" __MODULE_STRING(IFNAMSIZ));
2939 /* List of devices */
2940 static struct net_device *hp100_devlist[HP100_DEVICES];
2942 static void release_dev(int i)
2944 struct net_device *d = hp100_devlist[i];
2945 struct hp100_private *p = (struct hp100_private *) d->priv;
2947 unregister_netdev(d);
2948 release_region(d->base_addr, HP100_REGION_SIZE);
2950 if (p->mode == 1) /* busmaster */
2951 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f, p->page_vaddr_algn, virt_to_whatever(d, p->page_vaddr_algn));
2952 if (p->mem_ptr_virt)
2953 iounmap(p->mem_ptr_virt);
2957 hp100_devlist[i] = NULL;
2960 static int __init hp100_module_init(void)
2964 if (hp100_port == 0 && !EISA_bus && !pcibios_present())
2965 printk("hp100: You should not use auto-probing with insmod!\n");
2967 /* Loop on all possible base addresses */
2970 while ((hp100_port[++i] != -1) && (i < HP100_DEVICES)) {
2971 /* Create device and set basics args */
2972 hp100_devlist[i] = kmalloc(sizeof(struct net_device), GFP_KERNEL);
2973 if (!hp100_devlist[i])
2975 memset(hp100_devlist[i], 0x00, sizeof(struct net_device));
2976 #if LINUX_VERSION_CODE >= 0x020362 /* 2.3.99-pre7 */
2977 memcpy(hp100_devlist[i]->name, hp100_name[i], IFNAMSIZ); /* Copy name */
2979 hp100_devlist[i]->name = hp100_name[i];
2980 #endif /* LINUX_VERSION_CODE >= 0x020362 */
2981 hp100_devlist[i]->base_addr = hp100_port[i];
2982 hp100_devlist[i]->init = &hp100_probe;
2984 /* Try to create the device */
2985 if (register_netdev(hp100_devlist[i]) != 0) {
2986 /* DeAllocate everything */
2987 /* Note: if dev->priv is mallocated, there is no way to fail */
2988 kfree(hp100_devlist[i]);
2989 hp100_devlist[i] = (struct net_device *) NULL;
2992 } /* Loop over all devices */
2994 return cards > 0 ? 0 : -ENODEV;
2996 while (cards && --i)
2997 if (hp100_devlist[i]) {
3004 static void __exit hp100_module_exit(void)
3008 /* TODO: Check if all skb's are released/freed. */
3009 for (i = 0; i < HP100_DEVICES; i++)
3010 if (hp100_devlist[i] != (struct net_device *) NULL)
3014 module_init(hp100_module_init)
3015 module_exit(hp100_module_exit)
3022 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"