2 * Amiga Linux/68k 8390 based PCMCIA Ethernet Driver for the Amiga 1200
4 * (C) Copyright 1997 Alain Malek
5 * (Alain.Malek@cryogen.com)
7 * ----------------------------------------------------------------------------
9 * This program is based on
11 * ne.c: A general non-shared-memory NS8390 ethernet driver for linux
12 * Written 1992-94 by Donald Becker.
14 * 8390.c: A general NS8390 ethernet driver core for linux.
15 * Written 1992-94 by Donald Becker.
17 * cnetdevice: A Sana-II ethernet driver for AmigaOS
18 * Written by Bruce Abbott (bhabbott@inhb.co.nz)
20 * ----------------------------------------------------------------------------
22 * This file is subject to the terms and conditions of the GNU General Public
23 * License. See the file COPYING in the main directory of the Linux
24 * distribution for more details.
26 * ----------------------------------------------------------------------------
31 #include <linux/module.h>
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/pci.h>
35 #include <linux/init.h>
36 #include <linux/delay.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/jiffies.h>
41 #include <asm/system.h>
43 #include <asm/setup.h>
44 #include <asm/amigaints.h>
45 #include <asm/amigahw.h>
46 #include <asm/amigayle.h>
47 #include <asm/amipcmcia.h>
51 /* ---- No user-serviceable parts below ---- */
53 #define DRV_NAME "apne"
55 #define NE_BASE (dev->base_addr)
57 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
58 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
59 #define NE_IO_EXTENT 0x20
61 #define NE_EN0_ISR 0x07
62 #define NE_EN0_DCFG 0x0e
64 #define NE_EN0_RSARLO 0x08
65 #define NE_EN0_RSARHI 0x09
66 #define NE_EN0_RCNTLO 0x0a
67 #define NE_EN0_RXCR 0x0c
68 #define NE_EN0_TXCR 0x0d
69 #define NE_EN0_RCNTHI 0x0b
70 #define NE_EN0_IMR 0x0f
72 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
73 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
74 #define NESM_START_PG 0x40 /* First page of TX buffer */
75 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
78 struct net_device
* __init
apne_probe(int unit
);
79 static int apne_probe1(struct net_device
*dev
, int ioaddr
);
81 static void apne_reset_8390(struct net_device
*dev
);
82 static void apne_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
,
84 static void apne_block_input(struct net_device
*dev
, int count
,
85 struct sk_buff
*skb
, int ring_offset
);
86 static void apne_block_output(struct net_device
*dev
, const int count
,
87 const unsigned char *buf
, const int start_page
);
88 static irqreturn_t
apne_interrupt(int irq
, void *dev_id
);
90 static int init_pcmcia(void);
92 /* IO base address used for nic */
97 use MANUAL_CONFIG and MANUAL_OFFSET for enabling IO by hand
98 you can find the values to use by looking at the cnet.device
99 config file example (the default values are for the CNET40BC card)
103 #define MANUAL_CONFIG 0x20
104 #define MANUAL_OFFSET 0x3f8
106 #define MANUAL_HWADDR0 0x00
107 #define MANUAL_HWADDR1 0x12
108 #define MANUAL_HWADDR2 0x34
109 #define MANUAL_HWADDR3 0x56
110 #define MANUAL_HWADDR4 0x78
111 #define MANUAL_HWADDR5 0x9a
114 static const char version
[] =
115 "apne.c:v1.1 7/10/98 Alain Malek (Alain.Malek@cryogen.ch)\n";
117 static int apne_owned
; /* signal if card already owned */
119 struct net_device
* __init
apne_probe(int unit
)
121 struct net_device
*dev
;
122 #ifndef MANUAL_CONFIG
128 return ERR_PTR(-ENODEV
);
131 return ERR_PTR(-ENODEV
);
133 if ( !(AMIGAHW_PRESENT(PCMCIA
)) )
134 return ERR_PTR(-ENODEV
);
136 printk("Looking for PCMCIA ethernet card : ");
138 /* check if a card is inserted */
139 if (!(PCMCIA_INSERTED
)) {
140 printk("NO PCMCIA card inserted\n");
141 return ERR_PTR(-ENODEV
);
144 dev
= alloc_ei_netdev();
146 return ERR_PTR(-ENOMEM
);
148 sprintf(dev
->name
, "eth%d", unit
);
149 netdev_boot_setup_check(dev
);
152 /* disable pcmcia irq for readtuple */
153 pcmcia_disable_irq();
155 #ifndef MANUAL_CONFIG
156 if ((pcmcia_copy_tuple(CISTPL_FUNCID
, tuple
, 8) < 3) ||
157 (tuple
[2] != CISTPL_FUNCID_NETWORK
)) {
158 printk("not an ethernet card\n");
160 return ERR_PTR(-ENODEV
);
164 printk("ethernet PCMCIA card inserted\n");
166 if (!init_pcmcia()) {
168 return ERR_PTR(-ENODEV
);
171 if (!request_region(IOBASE
, 0x20, DRV_NAME
)) {
173 return ERR_PTR(-EBUSY
);
176 err
= apne_probe1(dev
, IOBASE
);
178 release_region(IOBASE
, 0x20);
182 err
= register_netdev(dev
);
186 pcmcia_disable_irq();
187 free_irq(IRQ_AMIGA_PORTS
, dev
);
189 release_region(IOBASE
, 0x20);
194 static int __init
apne_probe1(struct net_device
*dev
, int ioaddr
)
197 unsigned char SA_prom
[32];
199 const char *name
= NULL
;
200 int start_page
, stop_page
;
201 #ifndef MANUAL_HWADDR0
204 static unsigned version_printed
;
206 if (ei_debug
&& version_printed
++ == 0)
209 printk("PCMCIA NE*000 ethercard probe");
211 /* Reset card. Who knows what dain-bramaged state it was left in. */
212 { unsigned long reset_start_time
= jiffies
;
214 outb(inb(ioaddr
+ NE_RESET
), ioaddr
+ NE_RESET
);
216 while ((inb(ioaddr
+ NE_EN0_ISR
) & ENISR_RESET
) == 0)
217 if (time_after(jiffies
, reset_start_time
+ 2*HZ
/100)) {
218 printk(" not found (no reset ack).\n");
222 outb(0xff, ioaddr
+ NE_EN0_ISR
); /* Ack all intr. */
225 #ifndef MANUAL_HWADDR0
227 /* Read the 16 bytes of station address PROM.
228 We must first initialize registers, similar to NS8390_init(eifdev, 0).
229 We can't reliably read the SAPROM address without this.
230 (I learned the hard way!). */
232 struct {unsigned long value
, offset
; } program_seq
[] = {
233 {E8390_NODMA
+E8390_PAGE0
+E8390_STOP
, NE_CMD
}, /* Select page 0*/
234 {0x48, NE_EN0_DCFG
}, /* Set byte-wide (0x48) access. */
235 {0x00, NE_EN0_RCNTLO
}, /* Clear the count regs. */
236 {0x00, NE_EN0_RCNTHI
},
237 {0x00, NE_EN0_IMR
}, /* Mask completion irq. */
239 {E8390_RXOFF
, NE_EN0_RXCR
}, /* 0x20 Set to monitor */
240 {E8390_TXOFF
, NE_EN0_TXCR
}, /* 0x02 and loopback mode. */
242 {0x00, NE_EN0_RCNTHI
},
243 {0x00, NE_EN0_RSARLO
}, /* DMA starting at 0x0000. */
244 {0x00, NE_EN0_RSARHI
},
245 {E8390_RREAD
+E8390_START
, NE_CMD
},
247 for (i
= 0; i
< ARRAY_SIZE(program_seq
); i
++) {
248 outb(program_seq
[i
].value
, ioaddr
+ program_seq
[i
].offset
);
252 for(i
= 0; i
< 32 /*sizeof(SA_prom)*/; i
+=2) {
253 SA_prom
[i
] = inb(ioaddr
+ NE_DATAPORT
);
254 SA_prom
[i
+1] = inb(ioaddr
+ NE_DATAPORT
);
255 if (SA_prom
[i
] != SA_prom
[i
+1])
259 /* At this point, wordlength *only* tells us if the SA_prom is doubled
260 up or not because some broken PCI cards don't respect the byte-wide
261 request in program_seq above, and hence don't have doubled up values.
262 These broken cards would otherwise be detected as an ne1000. */
265 for (i
= 0; i
< 16; i
++)
266 SA_prom
[i
] = SA_prom
[i
+i
];
268 if (wordlength
== 2) {
269 /* We must set the 8390 for word mode. */
270 outb(0x49, ioaddr
+ NE_EN0_DCFG
);
271 start_page
= NESM_START_PG
;
272 stop_page
= NESM_STOP_PG
;
274 start_page
= NE1SM_START_PG
;
275 stop_page
= NE1SM_STOP_PG
;
278 neX000
= (SA_prom
[14] == 0x57 && SA_prom
[15] == 0x57);
279 ctron
= (SA_prom
[0] == 0x00 && SA_prom
[1] == 0x00 && SA_prom
[2] == 0x1d);
281 /* Set up the rest of the parameters. */
283 name
= (wordlength
== 2) ? "NE2000" : "NE1000";
285 name
= (wordlength
== 2) ? "Ctron-8" : "Ctron-16";
287 stop_page
= (wordlength
== 2) ? 0x40 : 0x20;
289 printk(" not found.\n");
296 /* We must set the 8390 for word mode. */
297 outb(0x49, ioaddr
+ NE_EN0_DCFG
);
298 start_page
= NESM_START_PG
;
299 stop_page
= NESM_STOP_PG
;
301 SA_prom
[0] = MANUAL_HWADDR0
;
302 SA_prom
[1] = MANUAL_HWADDR1
;
303 SA_prom
[2] = MANUAL_HWADDR2
;
304 SA_prom
[3] = MANUAL_HWADDR3
;
305 SA_prom
[4] = MANUAL_HWADDR4
;
306 SA_prom
[5] = MANUAL_HWADDR5
;
310 dev
->base_addr
= ioaddr
;
311 dev
->irq
= IRQ_AMIGA_PORTS
;
312 dev
->netdev_ops
= &ei_netdev_ops
;
314 /* Install the Interrupt handler */
315 i
= request_irq(dev
->irq
, apne_interrupt
, IRQF_SHARED
, DRV_NAME
, dev
);
318 for(i
= 0; i
< ETHER_ADDR_LEN
; i
++)
319 dev
->dev_addr
[i
] = SA_prom
[i
];
321 printk(" %pM\n", dev
->dev_addr
);
323 printk("%s: %s found.\n", dev
->name
, name
);
325 ei_status
.name
= name
;
326 ei_status
.tx_start_page
= start_page
;
327 ei_status
.stop_page
= stop_page
;
328 ei_status
.word16
= (wordlength
== 2);
330 ei_status
.rx_start_page
= start_page
+ TX_PAGES
;
332 ei_status
.reset_8390
= &apne_reset_8390
;
333 ei_status
.block_input
= &apne_block_input
;
334 ei_status
.block_output
= &apne_block_output
;
335 ei_status
.get_8390_hdr
= &apne_get_8390_hdr
;
339 pcmcia_ack_int(pcmcia_get_intreq()); /* ack PCMCIA int req */
347 /* Hard reset the card. This used to pause for the same period that a
348 8390 reset command required, but that shouldn't be necessary. */
350 apne_reset_8390(struct net_device
*dev
)
352 unsigned long reset_start_time
= jiffies
;
356 if (ei_debug
> 1) printk("resetting the 8390 t=%ld...", jiffies
);
358 outb(inb(NE_BASE
+ NE_RESET
), NE_BASE
+ NE_RESET
);
361 ei_status
.dmaing
= 0;
363 /* This check _should_not_ be necessary, omit eventually. */
364 while ((inb(NE_BASE
+NE_EN0_ISR
) & ENISR_RESET
) == 0)
365 if (time_after(jiffies
, reset_start_time
+ 2*HZ
/100)) {
366 printk("%s: ne_reset_8390() did not complete.\n", dev
->name
);
369 outb(ENISR_RESET
, NE_BASE
+ NE_EN0_ISR
); /* Ack intr. */
372 /* Grab the 8390 specific header. Similar to the block_input routine, but
373 we don't need to be concerned with ring wrap as the header will be at
374 the start of a page, so we optimize accordingly. */
377 apne_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
, int ring_page
)
380 int nic_base
= dev
->base_addr
;
385 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
386 if (ei_status
.dmaing
) {
387 printk("%s: DMAing conflict in ne_get_8390_hdr "
388 "[DMAstat:%d][irqlock:%d][intr:%d].\n",
389 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
, dev
->irq
);
393 ei_status
.dmaing
|= 0x01;
394 outb(E8390_NODMA
+E8390_PAGE0
+E8390_START
, nic_base
+ NE_CMD
);
395 outb(ENISR_RDC
, nic_base
+ NE_EN0_ISR
);
396 outb(sizeof(struct e8390_pkt_hdr
), nic_base
+ NE_EN0_RCNTLO
);
397 outb(0, nic_base
+ NE_EN0_RCNTHI
);
398 outb(0, nic_base
+ NE_EN0_RSARLO
); /* On page boundary */
399 outb(ring_page
, nic_base
+ NE_EN0_RSARHI
);
400 outb(E8390_RREAD
+E8390_START
, nic_base
+ NE_CMD
);
402 if (ei_status
.word16
) {
404 for(cnt
= 0; cnt
< (sizeof(struct e8390_pkt_hdr
)>>1); cnt
++)
405 *ptrs
++ = inw(NE_BASE
+ NE_DATAPORT
);
408 for(cnt
= 0; cnt
< sizeof(struct e8390_pkt_hdr
); cnt
++)
409 *ptrc
++ = inb(NE_BASE
+ NE_DATAPORT
);
412 outb(ENISR_RDC
, nic_base
+ NE_EN0_ISR
); /* Ack intr. */
413 ei_status
.dmaing
&= ~0x01;
415 le16_to_cpus(&hdr
->count
);
418 /* Block input and output, similar to the Crynwr packet driver. If you
419 are porting to a new ethercard, look at the packet driver source for hints.
420 The NEx000 doesn't share the on-board packet memory -- you have to put
421 the packet out through the "remote DMA" dataport using outb. */
424 apne_block_input(struct net_device
*dev
, int count
, struct sk_buff
*skb
, int ring_offset
)
426 int nic_base
= dev
->base_addr
;
427 char *buf
= skb
->data
;
432 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
433 if (ei_status
.dmaing
) {
434 printk("%s: DMAing conflict in ne_block_input "
435 "[DMAstat:%d][irqlock:%d][intr:%d].\n",
436 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
, dev
->irq
);
439 ei_status
.dmaing
|= 0x01;
440 outb(E8390_NODMA
+E8390_PAGE0
+E8390_START
, nic_base
+ NE_CMD
);
441 outb(ENISR_RDC
, nic_base
+ NE_EN0_ISR
);
442 outb(count
& 0xff, nic_base
+ NE_EN0_RCNTLO
);
443 outb(count
>> 8, nic_base
+ NE_EN0_RCNTHI
);
444 outb(ring_offset
& 0xff, nic_base
+ NE_EN0_RSARLO
);
445 outb(ring_offset
>> 8, nic_base
+ NE_EN0_RSARHI
);
446 outb(E8390_RREAD
+E8390_START
, nic_base
+ NE_CMD
);
447 if (ei_status
.word16
) {
449 for (cnt
= 0; cnt
< (count
>>1); cnt
++)
450 *ptrs
++ = inw(NE_BASE
+ NE_DATAPORT
);
452 buf
[count
-1] = inb(NE_BASE
+ NE_DATAPORT
);
456 for (cnt
= 0; cnt
< count
; cnt
++)
457 *ptrc
++ = inb(NE_BASE
+ NE_DATAPORT
);
460 outb(ENISR_RDC
, nic_base
+ NE_EN0_ISR
); /* Ack intr. */
461 ei_status
.dmaing
&= ~0x01;
465 apne_block_output(struct net_device
*dev
, int count
,
466 const unsigned char *buf
, const int start_page
)
468 int nic_base
= NE_BASE
;
469 unsigned long dma_start
;
474 /* Round the count up for word writes. Do we need to do this?
475 What effect will an odd byte count have on the 8390?
476 I should check someday. */
477 if (ei_status
.word16
&& (count
& 0x01))
480 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
481 if (ei_status
.dmaing
) {
482 printk("%s: DMAing conflict in ne_block_output."
483 "[DMAstat:%d][irqlock:%d][intr:%d]\n",
484 dev
->name
, ei_status
.dmaing
, ei_status
.irqlock
, dev
->irq
);
487 ei_status
.dmaing
|= 0x01;
488 /* We should already be in page 0, but to be safe... */
489 outb(E8390_PAGE0
+E8390_START
+E8390_NODMA
, nic_base
+ NE_CMD
);
491 outb(ENISR_RDC
, nic_base
+ NE_EN0_ISR
);
493 /* Now the normal output. */
494 outb(count
& 0xff, nic_base
+ NE_EN0_RCNTLO
);
495 outb(count
>> 8, nic_base
+ NE_EN0_RCNTHI
);
496 outb(0x00, nic_base
+ NE_EN0_RSARLO
);
497 outb(start_page
, nic_base
+ NE_EN0_RSARHI
);
499 outb(E8390_RWRITE
+E8390_START
, nic_base
+ NE_CMD
);
500 if (ei_status
.word16
) {
502 for (cnt
= 0; cnt
< count
>>1; cnt
++)
503 outw(*ptrs
++, NE_BASE
+NE_DATAPORT
);
506 for (cnt
= 0; cnt
< count
; cnt
++)
507 outb(*ptrc
++, NE_BASE
+ NE_DATAPORT
);
512 while ((inb(NE_BASE
+ NE_EN0_ISR
) & ENISR_RDC
) == 0)
513 if (time_after(jiffies
, dma_start
+ 2*HZ
/100)) { /* 20ms */
514 printk("%s: timeout waiting for Tx RDC.\n", dev
->name
);
515 apne_reset_8390(dev
);
520 outb(ENISR_RDC
, nic_base
+ NE_EN0_ISR
); /* Ack intr. */
521 ei_status
.dmaing
&= ~0x01;
524 static irqreturn_t
apne_interrupt(int irq
, void *dev_id
)
526 unsigned char pcmcia_intreq
;
528 if (!(gayle
.inten
& GAYLE_IRQ_IRQ
))
531 pcmcia_intreq
= pcmcia_get_intreq();
533 if (!(pcmcia_intreq
& GAYLE_IRQ_IRQ
)) {
534 pcmcia_ack_int(pcmcia_intreq
);
538 printk("pcmcia intreq = %x\n", pcmcia_intreq
);
539 pcmcia_disable_irq(); /* to get rid of the sti() within ei_interrupt */
540 ei_interrupt(irq
, dev_id
);
541 pcmcia_ack_int(pcmcia_get_intreq());
547 static struct net_device
*apne_dev
;
549 static int __init
apne_module_init(void)
551 apne_dev
= apne_probe(-1);
552 if (IS_ERR(apne_dev
))
553 return PTR_ERR(apne_dev
);
557 static void __exit
apne_module_exit(void)
559 unregister_netdev(apne_dev
);
561 pcmcia_disable_irq();
563 free_irq(IRQ_AMIGA_PORTS
, apne_dev
);
567 release_region(IOBASE
, 0x20);
569 free_netdev(apne_dev
);
571 module_init(apne_module_init
);
572 module_exit(apne_module_exit
);
575 static int init_pcmcia(void)
578 #ifndef MANUAL_CONFIG
585 pcmcia_program_voltage(PCMCIA_0V
);
586 pcmcia_access_speed(PCMCIA_SPEED_250NS
);
587 pcmcia_write_enable();
590 config
= MANUAL_CONFIG
;
592 /* get and write config byte to enable IO port */
594 if (pcmcia_copy_tuple(CISTPL_CFTABLE_ENTRY
, tuple
, 32) < 3)
597 config
= tuple
[2] & 0x3f;
600 offset
= MANUAL_OFFSET
;
602 if (pcmcia_copy_tuple(CISTPL_CONFIG
, tuple
, 32) < 6)
605 offset_len
= (tuple
[2] & 0x3) + 1;
607 while(offset_len
--) {
608 offset
= (offset
<< 8) | tuple
[4+offset_len
];
612 out_8(GAYLE_ATTRIBUTE
+offset
, config
);
617 MODULE_LICENSE("GPL");