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;
158 static void cleanup_card(struct net_device *dev)
160 free_irq(dev->irq, dev);
161 release_region(dev->base_addr, ES_IO_EXTENT);
162 iounmap(ei_status.mem);
166 struct net_device * __init es_probe(int unit)
168 struct net_device *dev = alloc_ei_netdev();
172 return ERR_PTR(-ENOMEM);
174 sprintf(dev->name, "eth%d", unit);
175 netdev_boot_setup_check(dev);
177 err = do_es_probe(dev);
180 err = register_netdev(dev);
192 static int __init es_probe1(struct net_device *dev, int ioaddr)
195 unsigned long eisa_id;
197 if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210"))
200 #if ES_DEBUG & ES_D_PROBE
201 printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT));
202 printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n",
203 inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3),
204 inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6));
208 /* Check the EISA ID of the card. */
209 eisa_id = inl(ioaddr + ES_ID_PORT);
210 if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) {
215 /* Check the Racal vendor ID as well. */
216 if (inb(ioaddr + ES_SA_PROM + 0) != ES_ADDR0
217 || inb(ioaddr + ES_SA_PROM + 1) != ES_ADDR1
218 || inb(ioaddr + ES_SA_PROM + 2) != ES_ADDR2 ) {
219 printk("es3210.c: card not found");
220 for(i = 0; i < ETHER_ADDR_LEN; i++)
221 printk(" %02x", inb(ioaddr + ES_SA_PROM + i));
222 printk(" (invalid prefix).\n");
227 printk("es3210.c: ES3210 rev. %ld at %#x, node", eisa_id>>24, ioaddr);
228 for(i = 0; i < ETHER_ADDR_LEN; i++)
229 printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i)));
231 /* Snarf the interrupt now. */
233 unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07;
234 unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe;
237 dev->irq = hi_irq_map[hi_irq - 1];
240 while (lo_irq > (1<<i)) i++;
241 dev->irq = lo_irq_map[i];
243 printk(" using IRQ %d", dev->irq);
244 #if ES_DEBUG & ES_D_PROBE
245 printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n",
246 hi_irq, lo_irq, dev->irq);
250 dev->irq = 9; /* Doh! */
251 printk(" assigning IRQ %d", dev->irq);
254 if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) {
255 printk (" unable to get IRQ %d.\n", dev->irq);
260 if (dev->mem_start == 0) {
261 unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0;
262 unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07;
264 if (mem_enabled != 0x80) {
265 printk(" shared mem disabled - giving up\n");
269 dev->mem_start = 0xC0000 + mem_bits*0x4000;
272 printk(" assigning ");
275 ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256);
276 if (!ei_status.mem) {
277 printk("ioremap failed - giving up\n");
282 dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256;
284 printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1);
286 #if ES_DEBUG & ES_D_PROBE
287 if (inb(ioaddr + ES_CFG5))
288 printk("es3210: Warning - DMA channel enabled, but not used here.\n");
290 /* Note, point at the 8390, and not the card... */
291 dev->base_addr = ioaddr + ES_NIC_OFFSET;
293 ei_status.name = "ES3210";
294 ei_status.tx_start_page = ES_START_PG;
295 ei_status.rx_start_page = ES_START_PG + TX_PAGES;
296 ei_status.stop_page = ES_STOP_PG;
297 ei_status.word16 = 1;
302 ei_status.reset_8390 = &es_reset_8390;
303 ei_status.block_input = &es_block_input;
304 ei_status.block_output = &es_block_output;
305 ei_status.get_8390_hdr = &es_get_8390_hdr;
307 dev->open = &es_open;
308 dev->stop = &es_close;
309 #ifdef CONFIG_NET_POLL_CONTROLLER
310 dev->poll_controller = ei_poll;
315 free_irq(dev->irq, dev);
317 release_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT);
322 * Reset as per the packet driver method. Judging by the EISA cfg
323 * file, this just toggles the "Board Enable" bits (bit 2 and 0).
326 static void es_reset_8390(struct net_device *dev)
328 unsigned short ioaddr = dev->base_addr;
331 outb(0x04, ioaddr + ES_RESET_PORT);
332 if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name);
334 end = jiffies + 2*HZ/100;
335 while ((signed)(end - jiffies) > 0) continue;
338 outb(0x01, ioaddr + ES_RESET_PORT);
339 if (ei_debug > 1) printk("reset done\n");
345 * Note: In the following three functions is the implicit assumption
346 * that the associated memcpy will only use "rep; movsl" as long as
347 * we keep the counts as some multiple of doublewords. This is a
348 * requirement of the hardware, and also prevents us from using
349 * eth_io_copy_and_sum() since we can't guarantee it will limit
350 * itself to doubleword access.
354 * Grab the 8390 specific header. Similar to the block_input routine, but
355 * we don't need to be concerned with ring wrap as the header will be at
356 * the start of a page, so we optimize accordingly. (A single doubleword.)
360 es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
362 void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_START_PG)<<8);
363 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
364 hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
368 * Block input and output are easy on shared memory ethercards, the only
369 * complication is when the ring buffer wraps. The count will already
370 * be rounded up to a doubleword value via es_get_8390_hdr() above.
373 static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb,
376 void __iomem *xfer_start = ei_status.mem + ring_offset - ES_START_PG*256;
378 if (ring_offset + count > ES_STOP_PG*256) {
379 /* Packet wraps over end of ring buffer. */
380 int semi_count = ES_STOP_PG*256 - ring_offset;
381 memcpy_fromio(skb->data, xfer_start, semi_count);
383 memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
385 /* Packet is in one chunk. */
386 eth_io_copy_and_sum(skb, xfer_start, count, 0);
390 static void es_block_output(struct net_device *dev, int count,
391 const unsigned char *buf, int start_page)
393 void __iomem *shmem = ei_status.mem + ((start_page - ES_START_PG)<<8);
395 count = (count + 3) & ~3; /* Round up to doubleword */
396 memcpy_toio(shmem, buf, count);
399 static int es_open(struct net_device *dev)
405 static int es_close(struct net_device *dev)
409 printk("%s: Shutting down ethercard.\n", dev->name);
416 #define MAX_ES_CARDS 4 /* Max number of ES3210 cards per module */
417 #define NAMELEN 8 /* # of chars for storing dev->name */
418 static struct net_device *dev_es3210[MAX_ES_CARDS];
419 static int io[MAX_ES_CARDS];
420 static int irq[MAX_ES_CARDS];
421 static int mem[MAX_ES_CARDS];
423 module_param_array(io, int, NULL, 0);
424 module_param_array(irq, int, NULL, 0);
425 module_param_array(mem, int, NULL, 0);
426 MODULE_PARM_DESC(io, "I/O base address(es)");
427 MODULE_PARM_DESC(irq, "IRQ number(s)");
428 MODULE_PARM_DESC(mem, "memory base address(es)");
429 MODULE_DESCRIPTION("Racal-Interlan ES3210 EISA ethernet driver");
430 MODULE_LICENSE("GPL");
435 struct net_device *dev;
436 int this_dev, found = 0;
438 for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
439 if (io[this_dev] == 0 && this_dev != 0)
441 dev = alloc_ei_netdev();
444 dev->irq = irq[this_dev];
445 dev->base_addr = io[this_dev];
446 dev->mem_start = mem[this_dev];
447 if (do_es_probe(dev) == 0) {
448 if (register_netdev(dev) == 0) {
449 dev_es3210[found++] = dev;
455 printk(KERN_WARNING "es3210.c: No es3210 card found (i/o = 0x%x).\n", io[this_dev]);
468 for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
469 struct net_device *dev = dev_es3210[this_dev];
471 unregister_netdev(dev);