4 Linux driver for Racal-Interlan ES3210 EISA Network Adapter
6 Copyright (C) 1996, 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) The existing myriad of Linux 8390 drivers written by Donald Becker.
15 2) Once again Russ Nelson's asm packet driver provided additional info.
17 3) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
18 Too bad it doesn't work -- see below.
20 The ES3210 is an EISA shared memory NS8390 implementation. Note
21 that all memory copies to/from the board must be 32bit transfers.
22 Which rules out using eth_io_copy_and_sum() in this driver.
24 Apparently there are two slightly different revisions of the
25 card, since there are two distinct EISA cfg files (!rii0101.cfg
26 and !rii0102.cfg) One has media select in the cfg file and the
27 other doesn't. Hopefully this will work with either.
29 That is about all I can tell you about it, having never actually
30 even seen one of these cards. :) Try http://www.interlan.com
31 if you want more info.
33 Thanks go to Mark Salazar for testing v0.02 of this driver.
37 1) The EISA cfg ports that are *supposed* to have the IRQ and shared
38 mem values just read 0xff all the time. Hrrmpf. Apparently the
39 same happens with the packet driver as the code for reading
40 these registers is disabled there. In the meantime, boot with:
41 ether=<IRQ>,0,0x<shared_mem_addr>,eth0 to override the IRQ and
42 shared memory detection. (The i/o port detection is okay.)
44 2) Module support currently untested. Probably works though.
48 static const char version[] =
49 "es3210.c: Driver revision v0.03, 14/09/96\n";
51 #include <linux/module.h>
52 #include <linux/eisa.h>
53 #include <linux/kernel.h>
54 #include <linux/errno.h>
55 #include <linux/string.h>
56 #include <linux/init.h>
57 #include <linux/netdevice.h>
58 #include <linux/etherdevice.h>
61 #include <asm/system.h>
65 static int es_probe1(struct net_device *dev, int ioaddr);
67 static int es_open(struct net_device *dev);
68 static int es_close(struct net_device *dev);
70 static void es_reset_8390(struct net_device *dev);
72 static void es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
73 static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
74 static void es_block_output(struct net_device *dev, int count, const unsigned char *buf, int start_page);
76 #define ES_START_PG 0x00 /* First page of TX buffer */
77 #define ES_STOP_PG 0x40 /* Last page +1 of RX ring */
79 #define ES_IO_EXTENT 0x37 /* The cfg file says 0xc90 -> 0xcc7 */
80 #define ES_ID_PORT 0xc80 /* Same for all EISA cards */
81 #define ES_SA_PROM 0xc90 /* Start of e'net addr. */
82 #define ES_RESET_PORT 0xc84 /* From the packet driver source */
83 #define ES_NIC_OFFSET 0xca0 /* Hello, the 8390 is *here* */
85 #define ES_ADDR0 0x02 /* 3 byte vendor prefix */
90 * Two card revisions. EISA ID's are always rev. minor, rev. major,, and
91 * then the three vendor letters stored in 5 bits each, with an "a" = 1.
92 * For eg: "rii" = 10010 01001 01001 = 0x4929, which is how the EISA
93 * config utility determines automagically what config file(s) to use.
95 #define ES_EISA_ID1 0x01012949 /* !rii0101.cfg */
96 #define ES_EISA_ID2 0x02012949 /* !rii0102.cfg */
98 #define ES_CFG1 0xcc0 /* IOPORT(1) --> IOPORT(6) in cfg file */
100 #define ES_CFG3 0xcc2
101 #define ES_CFG4 0xcc3
102 #define ES_CFG5 0xcc4
103 #define ES_CFG6 0xc84 /* NB: 0xc84 is also "reset" port. */
106 * You can OR any of the following bits together and assign it
107 * to ES_DEBUG to get verbose driver info during operation.
108 * Some of these don't do anything yet.
111 #define ES_D_PROBE 0x01
112 #define ES_D_RX_PKT 0x02
113 #define ES_D_TX_PKT 0x04
114 #define ED_D_IRQ 0x08
118 static unsigned char lo_irq_map[] __initdata = {3, 4, 5, 6, 7, 9, 10};
119 static unsigned char hi_irq_map[] __initdata = {11, 12, 0, 14, 0, 0, 0, 15};
122 * Probe for the card. The best way is to read the EISA ID if it
123 * is known. Then we check the prefix of the station address
124 * PROM for a match against the Racal-Interlan assigned value.
127 static int __init do_es_probe(struct net_device *dev)
129 unsigned short ioaddr = dev->base_addr;
131 int mem_start = dev->mem_start;
133 SET_MODULE_OWNER(dev);
135 if (ioaddr > 0x1ff) /* Check a single specified location. */
136 return es_probe1(dev, ioaddr);
137 else if (ioaddr > 0) /* Don't probe at all. */
141 #if ES_DEBUG & ES_D_PROBE
142 printk("es3210.c: Not EISA bus. Not probing high ports.\n");
147 /* EISA spec allows for up to 16 slots, but 8 is typical. */
148 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
149 if (es_probe1(dev, ioaddr) == 0)
152 dev->mem_start = mem_start;
159 struct net_device * __init es_probe(int unit)
161 struct net_device *dev = alloc_ei_netdev();
165 return ERR_PTR(-ENOMEM);
167 sprintf(dev->name, "eth%d", unit);
168 netdev_boot_setup_check(dev);
170 err = do_es_probe(dev);
180 static int __init es_probe1(struct net_device *dev, int ioaddr)
183 unsigned long eisa_id;
185 if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210"))
188 #if ES_DEBUG & ES_D_PROBE
189 printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT));
190 printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n",
191 inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3),
192 inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6));
196 /* Check the EISA ID of the card. */
197 eisa_id = inl(ioaddr + ES_ID_PORT);
198 if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) {
203 /* Check the Racal vendor ID as well. */
204 if (inb(ioaddr + ES_SA_PROM + 0) != ES_ADDR0
205 || inb(ioaddr + ES_SA_PROM + 1) != ES_ADDR1
206 || inb(ioaddr + ES_SA_PROM + 2) != ES_ADDR2 ) {
207 printk("es3210.c: card not found");
208 for(i = 0; i < ETHER_ADDR_LEN; i++)
209 printk(" %02x", inb(ioaddr + ES_SA_PROM + i));
210 printk(" (invalid prefix).\n");
215 printk("es3210.c: ES3210 rev. %ld at %#x, node", eisa_id>>24, ioaddr);
216 for(i = 0; i < ETHER_ADDR_LEN; i++)
217 printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i)));
219 /* Snarf the interrupt now. */
221 unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07;
222 unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe;
225 dev->irq = hi_irq_map[hi_irq - 1];
228 while (lo_irq > (1<<i)) i++;
229 dev->irq = lo_irq_map[i];
231 printk(" using IRQ %d", dev->irq);
232 #if ES_DEBUG & ES_D_PROBE
233 printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n",
234 hi_irq, lo_irq, dev->irq);
238 dev->irq = 9; /* Doh! */
239 printk(" assigning IRQ %d", dev->irq);
242 if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) {
243 printk (" unable to get IRQ %d.\n", dev->irq);
248 if (dev->mem_start == 0) {
249 unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0;
250 unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07;
252 if (mem_enabled != 0x80) {
253 printk(" shared mem disabled - giving up\n");
257 dev->mem_start = 0xC0000 + mem_bits*0x4000;
260 printk(" assigning ");
263 ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256);
264 if (!ei_status.mem) {
265 printk("ioremap failed - giving up\n");
270 dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256;
272 printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1);
274 #if ES_DEBUG & ES_D_PROBE
275 if (inb(ioaddr + ES_CFG5))
276 printk("es3210: Warning - DMA channel enabled, but not used here.\n");
278 /* Note, point at the 8390, and not the card... */
279 dev->base_addr = ioaddr + ES_NIC_OFFSET;
281 ei_status.name = "ES3210";
282 ei_status.tx_start_page = ES_START_PG;
283 ei_status.rx_start_page = ES_START_PG + TX_PAGES;
284 ei_status.stop_page = ES_STOP_PG;
285 ei_status.word16 = 1;
290 ei_status.reset_8390 = &es_reset_8390;
291 ei_status.block_input = &es_block_input;
292 ei_status.block_output = &es_block_output;
293 ei_status.get_8390_hdr = &es_get_8390_hdr;
295 dev->open = &es_open;
296 dev->stop = &es_close;
297 #ifdef CONFIG_NET_POLL_CONTROLLER
298 dev->poll_controller = ei_poll;
302 retval = register_netdev(dev);
307 free_irq(dev->irq, dev);
309 release_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT);
314 * Reset as per the packet driver method. Judging by the EISA cfg
315 * file, this just toggles the "Board Enable" bits (bit 2 and 0).
318 static void es_reset_8390(struct net_device *dev)
320 unsigned short ioaddr = dev->base_addr;
323 outb(0x04, ioaddr + ES_RESET_PORT);
324 if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name);
326 end = jiffies + 2*HZ/100;
327 while ((signed)(end - jiffies) > 0) continue;
330 outb(0x01, ioaddr + ES_RESET_PORT);
331 if (ei_debug > 1) printk("reset done\n");
337 * Note: In the following three functions is the implicit assumption
338 * that the associated memcpy will only use "rep; movsl" as long as
339 * we keep the counts as some multiple of doublewords. This is a
340 * requirement of the hardware, and also prevents us from using
341 * eth_io_copy_and_sum() since we can't guarantee it will limit
342 * itself to doubleword access.
346 * Grab the 8390 specific header. Similar to the block_input routine, but
347 * we don't need to be concerned with ring wrap as the header will be at
348 * the start of a page, so we optimize accordingly. (A single doubleword.)
352 es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
354 void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_START_PG)<<8);
355 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
356 hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
360 * Block input and output are easy on shared memory ethercards, the only
361 * complication is when the ring buffer wraps. The count will already
362 * be rounded up to a doubleword value via es_get_8390_hdr() above.
365 static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb,
368 void __iomem *xfer_start = ei_status.mem + ring_offset - ES_START_PG*256;
370 if (ring_offset + count > ES_STOP_PG*256) {
371 /* Packet wraps over end of ring buffer. */
372 int semi_count = ES_STOP_PG*256 - ring_offset;
373 memcpy_fromio(skb->data, xfer_start, semi_count);
375 memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
377 /* Packet is in one chunk. */
378 memcpy_fromio(skb->data, xfer_start, count);
382 static void es_block_output(struct net_device *dev, int count,
383 const unsigned char *buf, int start_page)
385 void __iomem *shmem = ei_status.mem + ((start_page - ES_START_PG)<<8);
387 count = (count + 3) & ~3; /* Round up to doubleword */
388 memcpy_toio(shmem, buf, count);
391 static int es_open(struct net_device *dev)
397 static int es_close(struct net_device *dev)
401 printk("%s: Shutting down ethercard.\n", dev->name);
408 #define MAX_ES_CARDS 4 /* Max number of ES3210 cards per module */
409 #define NAMELEN 8 /* # of chars for storing dev->name */
410 static struct net_device *dev_es3210[MAX_ES_CARDS];
411 static int io[MAX_ES_CARDS];
412 static int irq[MAX_ES_CARDS];
413 static int mem[MAX_ES_CARDS];
415 module_param_array(io, int, NULL, 0);
416 module_param_array(irq, int, NULL, 0);
417 module_param_array(mem, int, NULL, 0);
418 MODULE_PARM_DESC(io, "I/O base address(es)");
419 MODULE_PARM_DESC(irq, "IRQ number(s)");
420 MODULE_PARM_DESC(mem, "memory base address(es)");
421 MODULE_DESCRIPTION("Racal-Interlan ES3210 EISA ethernet driver");
422 MODULE_LICENSE("GPL");
424 int __init init_module(void)
426 struct net_device *dev;
427 int this_dev, found = 0;
429 for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
430 if (io[this_dev] == 0 && this_dev != 0)
432 dev = alloc_ei_netdev();
435 dev->irq = irq[this_dev];
436 dev->base_addr = io[this_dev];
437 dev->mem_start = mem[this_dev];
438 if (do_es_probe(dev) == 0) {
439 dev_es3210[found++] = dev;
443 printk(KERN_WARNING "es3210.c: No es3210 card found (i/o = 0x%x).\n", io[this_dev]);
451 static void cleanup_card(struct net_device *dev)
453 free_irq(dev->irq, dev);
454 release_region(dev->base_addr, ES_IO_EXTENT);
455 iounmap(ei_status.mem);
463 for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
464 struct net_device *dev = dev_es3210[this_dev];
466 unregister_netdev(dev);