4 Linux driver for Mylex LNE390 EISA Network Adapter
6 Copyright (C) 1996-1998, Paul Gortmaker.
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
11 Information and Code Sources:
13 1) Based upon framework of es3210 driver.
14 2) The existing myriad of other Linux 8390 drivers by Donald Becker.
15 3) Russ Nelson's asm packet driver provided additional info.
16 4) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
18 The LNE390 is an EISA shared memory NS8390 implementation. Note
19 that all memory copies to/from the board must be 32bit transfers.
20 There are two versions of the card: the lne390a and the lne390b.
21 Going by the EISA cfg files, the "a" has jumpers to select between
22 BNC/AUI, but the "b" also has RJ-45 and selection is via the SCU.
23 The shared memory address selection is also slightly different.
24 Note that shared memory address > 1MB are supported with this driver.
26 You can try <http://www.mylex.com> if you want more info, as I've
27 never even seen one of these cards. :)
29 Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/09/01
30 - get rid of check_region
31 - no need to check if dev == NULL in lne390_probe1
34 static const char *version
=
35 "lne390.c: Driver revision v0.99.1, 01/09/2000\n";
37 #include <linux/module.h>
38 #include <linux/eisa.h>
39 #include <linux/kernel.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/delay.h>
43 #include <linux/init.h>
44 #include <linux/netdevice.h>
45 #include <linux/etherdevice.h>
48 #include <asm/system.h>
52 #define DRV_NAME "lne390"
54 static int lne390_probe1(struct net_device
*dev
, int ioaddr
);
56 static int lne390_open(struct net_device
*dev
);
57 static int lne390_close(struct net_device
*dev
);
59 static void lne390_reset_8390(struct net_device
*dev
);
61 static void lne390_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
, int ring_page
);
62 static void lne390_block_input(struct net_device
*dev
, int count
, struct sk_buff
*skb
, int ring_offset
);
63 static void lne390_block_output(struct net_device
*dev
, int count
, const unsigned char *buf
, const int start_page
);
65 #define LNE390_START_PG 0x00 /* First page of TX buffer */
66 #define LNE390_STOP_PG 0x80 /* Last page +1 of RX ring */
68 #define LNE390_ID_PORT 0xc80 /* Same for all EISA cards */
69 #define LNE390_IO_EXTENT 0x20
70 #define LNE390_SA_PROM 0x16 /* Start of e'net addr. */
71 #define LNE390_RESET_PORT 0xc84 /* From the pkt driver source */
72 #define LNE390_NIC_OFFSET 0x00 /* Hello, the 8390 is *here* */
74 #define LNE390_ADDR0 0x00 /* 3 byte vendor prefix */
75 #define LNE390_ADDR1 0x80
76 #define LNE390_ADDR2 0xe5
78 #define LNE390_ID0 0x10009835 /* 0x3598 = 01101 01100 11000 = mlx */
79 #define LNE390_ID1 0x11009835 /* above is the 390A, this is 390B */
81 #define LNE390_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */
82 #define LNE390_CFG2 0xc90
85 * You can OR any of the following bits together and assign it
86 * to LNE390_DEBUG to get verbose driver info during operation.
87 * Currently only the probe one is implemented.
90 #define LNE390_D_PROBE 0x01
91 #define LNE390_D_RX_PKT 0x02
92 #define LNE390_D_TX_PKT 0x04
93 #define LNE390_D_IRQ 0x08
95 #define LNE390_DEBUG 0
97 static unsigned char irq_map
[] __initdata
= {15, 12, 11, 10, 9, 7, 5, 3};
98 static unsigned int shmem_mapA
[] __initdata
= {0xff, 0xfe, 0xfd, 0xfff, 0xffe, 0xffc, 0x0d, 0x0};
99 static unsigned int shmem_mapB
[] __initdata
= {0xff, 0xfe, 0x0e, 0xfff, 0xffe, 0xffc, 0x0d, 0x0};
102 * Probe for the card. The best way is to read the EISA ID if it
103 * is known. Then we can check the prefix of the station address
104 * PROM for a match against the value assigned to Mylex.
107 static int __init
do_lne390_probe(struct net_device
*dev
)
109 unsigned short ioaddr
= dev
->base_addr
;
111 int mem_start
= dev
->mem_start
;
114 SET_MODULE_OWNER(dev
);
116 if (ioaddr
> 0x1ff) { /* Check a single specified location. */
117 if (!request_region(ioaddr
, LNE390_IO_EXTENT
, DRV_NAME
))
119 ret
= lne390_probe1(dev
, ioaddr
);
121 release_region(ioaddr
, LNE390_IO_EXTENT
);
124 else if (ioaddr
> 0) /* Don't probe at all. */
128 #if LNE390_DEBUG & LNE390_D_PROBE
129 printk("lne390-debug: Not an EISA bus. Not probing high ports.\n");
134 /* EISA spec allows for up to 16 slots, but 8 is typical. */
135 for (ioaddr
= 0x1000; ioaddr
< 0x9000; ioaddr
+= 0x1000) {
136 if (!request_region(ioaddr
, LNE390_IO_EXTENT
, DRV_NAME
))
138 if (lne390_probe1(dev
, ioaddr
) == 0)
140 release_region(ioaddr
, LNE390_IO_EXTENT
);
142 dev
->mem_start
= mem_start
;
148 static void cleanup_card(struct net_device
*dev
)
150 free_irq(dev
->irq
, dev
);
151 release_region(dev
->base_addr
, LNE390_IO_EXTENT
);
152 iounmap(ei_status
.mem
);
156 struct net_device
* __init
lne390_probe(int unit
)
158 struct net_device
*dev
= alloc_ei_netdev();
162 return ERR_PTR(-ENOMEM
);
164 sprintf(dev
->name
, "eth%d", unit
);
165 netdev_boot_setup_check(dev
);
167 err
= do_lne390_probe(dev
);
177 static int __init
lne390_probe1(struct net_device
*dev
, int ioaddr
)
179 int i
, revision
, ret
;
180 unsigned long eisa_id
;
182 if (inb_p(ioaddr
+ LNE390_ID_PORT
) == 0xff) return -ENODEV
;
184 #if LNE390_DEBUG & LNE390_D_PROBE
185 printk("lne390-debug: probe at %#x, ID %#8x\n", ioaddr
, inl(ioaddr
+ LNE390_ID_PORT
));
186 printk("lne390-debug: config regs: %#x %#x\n",
187 inb(ioaddr
+ LNE390_CFG1
), inb(ioaddr
+ LNE390_CFG2
));
191 /* Check the EISA ID of the card. */
192 eisa_id
= inl(ioaddr
+ LNE390_ID_PORT
);
193 if ((eisa_id
!= LNE390_ID0
) && (eisa_id
!= LNE390_ID1
)) {
197 revision
= (eisa_id
>> 24) & 0x01; /* 0 = rev A, 1 rev B */
200 /* Check the Mylex vendor ID as well. Not really required. */
201 if (inb(ioaddr
+ LNE390_SA_PROM
+ 0) != LNE390_ADDR0
202 || inb(ioaddr
+ LNE390_SA_PROM
+ 1) != LNE390_ADDR1
203 || inb(ioaddr
+ LNE390_SA_PROM
+ 2) != LNE390_ADDR2
) {
204 printk("lne390.c: card not found");
205 for(i
= 0; i
< ETHER_ADDR_LEN
; i
++)
206 printk(" %02x", inb(ioaddr
+ LNE390_SA_PROM
+ i
));
207 printk(" (invalid prefix).\n");
212 printk("lne390.c: LNE390%X in EISA slot %d, address", 0xa+revision
, ioaddr
/0x1000);
213 for(i
= 0; i
< ETHER_ADDR_LEN
; i
++)
214 printk(" %02x", (dev
->dev_addr
[i
] = inb(ioaddr
+ LNE390_SA_PROM
+ i
)));
215 printk(".\nlne390.c: ");
217 /* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
219 unsigned char irq_reg
= inb(ioaddr
+ LNE390_CFG2
) >> 3;
220 dev
->irq
= irq_map
[irq_reg
& 0x07];
223 /* This is useless unless we reprogram the card here too */
224 if (dev
->irq
== 2) dev
->irq
= 9; /* Doh! */
227 printk(" IRQ %d,", dev
->irq
);
229 if ((ret
= request_irq(dev
->irq
, ei_interrupt
, 0, DRV_NAME
, dev
))) {
230 printk (" unable to get IRQ %d.\n", dev
->irq
);
234 if (dev
->mem_start
== 0) {
235 unsigned char mem_reg
= inb(ioaddr
+ LNE390_CFG2
) & 0x07;
237 if (revision
) /* LNE390B */
238 dev
->mem_start
= shmem_mapB
[mem_reg
] * 0x10000;
240 dev
->mem_start
= shmem_mapA
[mem_reg
] * 0x10000;
243 /* Should check for value in shmem_map and reprogram the card to use it */
244 dev
->mem_start
&= 0xfff0000;
245 printk(" assigning ");
248 printk("%dkB memory at physical address %#lx\n",
249 LNE390_STOP_PG
/4, dev
->mem_start
);
252 BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
253 the card mem within the region covered by `normal' RAM !!!
255 ioremap() will fail in that case.
257 ei_status
.mem
= ioremap(dev
->mem_start
, LNE390_STOP_PG
*0x100);
258 if (!ei_status
.mem
) {
259 printk(KERN_ERR
"lne390.c: Unable to remap card memory above 1MB !!\n");
260 printk(KERN_ERR
"lne390.c: Try using EISA SCU to set memory below 1MB.\n");
261 printk(KERN_ERR
"lne390.c: Driver NOT installed.\n");
265 printk("lne390.c: remapped %dkB card memory to virtual address %p\n",
266 LNE390_STOP_PG
/4, ei_status
.mem
);
268 dev
->mem_start
= (unsigned long)ei_status
.mem
;
269 dev
->mem_end
= dev
->mem_start
+ (LNE390_STOP_PG
- LNE390_START_PG
)*256;
271 /* The 8390 offset is zero for the LNE390 */
272 dev
->base_addr
= ioaddr
;
274 ei_status
.name
= "LNE390";
275 ei_status
.tx_start_page
= LNE390_START_PG
;
276 ei_status
.rx_start_page
= LNE390_START_PG
+ TX_PAGES
;
277 ei_status
.stop_page
= LNE390_STOP_PG
;
278 ei_status
.word16
= 1;
283 ei_status
.reset_8390
= &lne390_reset_8390
;
284 ei_status
.block_input
= &lne390_block_input
;
285 ei_status
.block_output
= &lne390_block_output
;
286 ei_status
.get_8390_hdr
= &lne390_get_8390_hdr
;
288 dev
->open
= &lne390_open
;
289 dev
->stop
= &lne390_close
;
290 #ifdef CONFIG_NET_POLL_CONTROLLER
291 dev
->poll_controller
= ei_poll
;
295 ret
= register_netdev(dev
);
301 iounmap((void *)dev
->mem_start
);
303 free_irq(dev
->irq
, dev
);
308 * Reset as per the packet driver method. Judging by the EISA cfg
309 * file, this just toggles the "Board Enable" bits (bit 2 and 0).
312 static void lne390_reset_8390(struct net_device
*dev
)
314 unsigned short ioaddr
= dev
->base_addr
;
316 outb(0x04, ioaddr
+ LNE390_RESET_PORT
);
317 if (ei_debug
> 1) printk("%s: resetting the LNE390...", dev
->name
);
322 outb(0x01, ioaddr
+ LNE390_RESET_PORT
);
323 if (ei_debug
> 1) printk("reset done\n");
329 * Note: In the following three functions is the implicit assumption
330 * that the associated memcpy will only use "rep; movsl" as long as
331 * we keep the counts as some multiple of doublewords. This is a
332 * requirement of the hardware, and also prevents us from using
333 * eth_io_copy_and_sum() since we can't guarantee it will limit
334 * itself to doubleword access.
338 * Grab the 8390 specific header. Similar to the block_input routine, but
339 * we don't need to be concerned with ring wrap as the header will be at
340 * the start of a page, so we optimize accordingly. (A single doubleword.)
344 lne390_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
, int ring_page
)
346 void __iomem
*hdr_start
= ei_status
.mem
+ ((ring_page
- LNE390_START_PG
)<<8);
347 memcpy_fromio(hdr
, hdr_start
, sizeof(struct e8390_pkt_hdr
));
348 hdr
->count
= (hdr
->count
+ 3) & ~3; /* Round up allocation. */
352 * Block input and output are easy on shared memory ethercards, the only
353 * complication is when the ring buffer wraps. The count will already
354 * be rounded up to a doubleword value via lne390_get_8390_hdr() above.
357 static void lne390_block_input(struct net_device
*dev
, int count
, struct sk_buff
*skb
,
360 void __iomem
*xfer_start
= ei_status
.mem
+ ring_offset
- (LNE390_START_PG
<<8);
362 if (ring_offset
+ count
> (LNE390_STOP_PG
<<8)) {
363 /* Packet wraps over end of ring buffer. */
364 int semi_count
= (LNE390_STOP_PG
<<8) - ring_offset
;
365 memcpy_fromio(skb
->data
, xfer_start
, semi_count
);
367 memcpy_fromio(skb
->data
+ semi_count
,
368 ei_status
.mem
+ (TX_PAGES
<<8), count
);
370 /* Packet is in one chunk. */
371 memcpy_fromio(skb
->data
, xfer_start
, count
);
375 static void lne390_block_output(struct net_device
*dev
, int count
,
376 const unsigned char *buf
, int start_page
)
378 void __iomem
*shmem
= ei_status
.mem
+ ((start_page
- LNE390_START_PG
)<<8);
380 count
= (count
+ 3) & ~3; /* Round up to doubleword */
381 memcpy_toio(shmem
, buf
, count
);
384 static int lne390_open(struct net_device
*dev
)
390 static int lne390_close(struct net_device
*dev
)
394 printk("%s: Shutting down ethercard.\n", dev
->name
);
401 #define MAX_LNE_CARDS 4 /* Max number of LNE390 cards per module */
402 static struct net_device
*dev_lne
[MAX_LNE_CARDS
];
403 static int io
[MAX_LNE_CARDS
];
404 static int irq
[MAX_LNE_CARDS
];
405 static int mem
[MAX_LNE_CARDS
];
407 module_param_array(io
, int, NULL
, 0);
408 module_param_array(irq
, int, NULL
, 0);
409 module_param_array(mem
, int, NULL
, 0);
410 MODULE_PARM_DESC(io
, "I/O base address(es)");
411 MODULE_PARM_DESC(irq
, "IRQ number(s)");
412 MODULE_PARM_DESC(mem
, "memory base address(es)");
413 MODULE_DESCRIPTION("Mylex LNE390A/B EISA Ethernet driver");
414 MODULE_LICENSE("GPL");
416 int init_module(void)
418 struct net_device
*dev
;
419 int this_dev
, found
= 0;
421 for (this_dev
= 0; this_dev
< MAX_LNE_CARDS
; this_dev
++) {
422 if (io
[this_dev
] == 0 && this_dev
!= 0)
424 dev
= alloc_ei_netdev();
427 dev
->irq
= irq
[this_dev
];
428 dev
->base_addr
= io
[this_dev
];
429 dev
->mem_start
= mem
[this_dev
];
430 if (do_lne390_probe(dev
) == 0) {
431 dev_lne
[found
++] = dev
;
435 printk(KERN_WARNING
"lne390.c: No LNE390 card found (i/o = 0x%x).\n", io
[this_dev
]);
443 void cleanup_module(void)
447 for (this_dev
= 0; this_dev
< MAX_LNE_CARDS
; this_dev
++) {
448 struct net_device
*dev
= dev_lne
[this_dev
];
450 unregister_netdev(dev
);
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