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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 ne3210.c
3
4 Linux driver for Novell NE3210 EISA Network Adapter
5
6 Copyright (C) 1998, Paul Gortmaker.
7
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
10
11 Information and Code Sources:
12
13 1) Based upon my other EISA 8390 drivers (lne390, es3210, smc-ultra32)
14 2) The existing myriad of other Linux 8390 drivers by Donald Becker.
15 3) Info for getting IRQ and sh-mem gleaned from the EISA cfg file
16
Jeff Garzik6aa20a22006-09-13 13:24:59 -040017 The NE3210 is an EISA shared memory NS8390 implementation. Shared
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 memory address > 1MB should work with this driver.
19
Jeff Garzik6aa20a22006-09-13 13:24:59 -040020 Note that the .cfg file (3/11/93, v1.0) has AUI and BNC switched
Linus Torvalds1da177e2005-04-16 15:20:36 -070021 around (or perhaps there are some defective/backwards cards ???)
22
23 This driver WILL NOT WORK FOR THE NE3200 - it is completely different
24 and does not use an 8390 at all.
25
26 Updated to EISA probing API 5/2003 by Marc Zyngier.
27*/
28
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/module.h>
30#include <linux/eisa.h>
31#include <linux/kernel.h>
32#include <linux/errno.h>
33#include <linux/string.h>
34#include <linux/delay.h>
35#include <linux/init.h>
36#include <linux/interrupt.h>
37#include <linux/netdevice.h>
38#include <linux/etherdevice.h>
Al Virod7fe0f22006-12-03 23:15:30 -050039#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
41#include <asm/io.h>
42#include <asm/system.h>
43
44#include "8390.h"
45
46#define DRV_NAME "ne3210"
47
Linus Torvalds1da177e2005-04-16 15:20:36 -070048static void ne3210_reset_8390(struct net_device *dev);
49
50static void ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
51static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
52static void ne3210_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page);
53
54#define NE3210_START_PG 0x00 /* First page of TX buffer */
55#define NE3210_STOP_PG 0x80 /* Last page +1 of RX ring */
56
57#define NE3210_IO_EXTENT 0x20
58#define NE3210_SA_PROM 0x16 /* Start of e'net addr. */
59#define NE3210_RESET_PORT 0xc84
60#define NE3210_NIC_OFFSET 0x00 /* Hello, the 8390 is *here* */
61
62#define NE3210_ADDR0 0x00 /* 3 byte vendor prefix */
63#define NE3210_ADDR1 0x00
64#define NE3210_ADDR2 0x1b
65
66#define NE3210_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */
67#define NE3210_CFG2 0xc90
68#define NE3210_CFG_EXTENT (NE3210_CFG2 - NE3210_CFG1 + 1)
69
70/*
71 * You can OR any of the following bits together and assign it
72 * to NE3210_DEBUG to get verbose driver info during operation.
73 * Currently only the probe one is implemented.
74 */
75
76#define NE3210_D_PROBE 0x01
77#define NE3210_D_RX_PKT 0x02
78#define NE3210_D_TX_PKT 0x04
79#define NE3210_D_IRQ 0x08
80
81#define NE3210_DEBUG 0x0
82
83static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
84static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0};
85static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"};
86static int ifmap_val[] __initdata = {
87 IF_PORT_10BASET,
88 IF_PORT_UNKNOWN,
89 IF_PORT_10BASE2,
90 IF_PORT_AUI,
91};
92
93static int __init ne3210_eisa_probe (struct device *device)
94{
95 unsigned long ioaddr, phys_mem;
96 int i, retval, port_index;
97 struct eisa_device *edev = to_eisa_device (device);
98 struct net_device *dev;
99
100 /* Allocate dev->priv and fill in 8390 specific dev fields. */
101 if (!(dev = alloc_ei_netdev ())) {
102 printk ("ne3210.c: unable to allocate memory for dev!\n");
103 return -ENOMEM;
104 }
105
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 SET_NETDEV_DEV(dev, device);
Greg Kroah-Hartman1aec5bd2009-04-30 12:19:31 +0000107 dev_set_drvdata(device, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 ioaddr = edev->base_addr;
109
110 if (!request_region(ioaddr, NE3210_IO_EXTENT, DRV_NAME)) {
111 retval = -EBUSY;
112 goto out;
113 }
114
115 if (!request_region(ioaddr + NE3210_CFG1,
116 NE3210_CFG_EXTENT, DRV_NAME)) {
117 retval = -EBUSY;
118 goto out1;
119 }
120
121#if NE3210_DEBUG & NE3210_D_PROBE
122 printk("ne3210-debug: probe at %#x, ID %s\n", ioaddr, edev->id.sig);
123 printk("ne3210-debug: config regs: %#x %#x\n",
124 inb(ioaddr + NE3210_CFG1), inb(ioaddr + NE3210_CFG2));
125#endif
126
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 port_index = inb(ioaddr + NE3210_CFG2) >> 6;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 for(i = 0; i < ETHER_ADDR_LEN; i++)
Joe Perches0795af52007-10-03 17:59:30 -0700129 dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i);
Johannes Berge1749612008-10-27 15:59:26 -0700130 printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr: %pM.\n",
131 edev->slot, ifmap[port_index], dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132
133 /* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
134 dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
Joe Perches0795af52007-10-03 17:59:30 -0700135 printk("ne3210.c: using IRQ %d, ", dev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
137 retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
138 if (retval) {
139 printk (" unable to get IRQ %d.\n", dev->irq);
140 goto out2;
141 }
142
143 phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;
144
145 /*
146 BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
147 the card mem within the region covered by `normal' RAM !!!
148 */
149 if (phys_mem > 1024*1024) { /* phys addr > 1MB */
150 if (phys_mem < virt_to_phys(high_memory)) {
151 printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
152 printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
Jaswinder Singh Rajput76a85632009-02-12 00:28:09 +0530153 printk(KERN_CRIT "ne3210.c: or to an address above 0x%llx.\n",
154 (u64)virt_to_phys(high_memory));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
156 retval = -EINVAL;
157 goto out3;
158 }
159 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400160
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
162 printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
163 phys_mem);
164 goto out3;
165 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400166
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 printk("%dkB memory at physical address %#lx\n",
168 NE3210_STOP_PG/4, phys_mem);
169
170 ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
171 if (!ei_status.mem) {
172 printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
173 printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
174 retval = -EAGAIN;
175 goto out4;
176 }
177 printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
178 NE3210_STOP_PG/4, ei_status.mem);
179 dev->mem_start = (unsigned long)ei_status.mem;
180 dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;
181
182 /* The 8390 offset is zero for the NE3210 */
183 dev->base_addr = ioaddr;
184
185 ei_status.name = "NE3210";
186 ei_status.tx_start_page = NE3210_START_PG;
187 ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
188 ei_status.stop_page = NE3210_STOP_PG;
189 ei_status.word16 = 1;
190 ei_status.priv = phys_mem;
191
192 if (ei_debug > 0)
Adrian Bunk9d8cc1b2005-09-03 14:04:55 -0700193 printk("ne3210 loaded.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
195 ei_status.reset_8390 = &ne3210_reset_8390;
196 ei_status.block_input = &ne3210_block_input;
197 ei_status.block_output = &ne3210_block_output;
198 ei_status.get_8390_hdr = &ne3210_get_8390_hdr;
199
Stephen Hemmingerd2699412008-11-25 18:23:35 -0800200 dev->netdev_ops = &ei_netdev_ops;
201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 dev->if_port = ifmap_val[port_index];
203
204 if ((retval = register_netdev (dev)))
205 goto out5;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 NS8390_init(dev, 0);
208 return 0;
209
210 out5:
211 iounmap(ei_status.mem);
212 out4:
213 release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
214 out3:
215 free_irq (dev->irq, dev);
216 out2:
217 release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
218 out1:
219 release_region (ioaddr, NE3210_IO_EXTENT);
220 out:
221 free_netdev (dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400222
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 return retval;
224}
225
226static int __devexit ne3210_eisa_remove (struct device *device)
227{
Greg Kroah-Hartman1aec5bd2009-04-30 12:19:31 +0000228 struct net_device *dev = dev_get_drvdata(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 unsigned long ioaddr = to_eisa_device (device)->base_addr;
230
231 unregister_netdev (dev);
232 iounmap(ei_status.mem);
233 release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
234 free_irq (dev->irq, dev);
235 release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
236 release_region (ioaddr, NE3210_IO_EXTENT);
237 free_netdev (dev);
238
239 return 0;
240}
241
242/*
243 * Reset by toggling the "Board Enable" bits (bit 2 and 0).
244 */
245
246static void ne3210_reset_8390(struct net_device *dev)
247{
248 unsigned short ioaddr = dev->base_addr;
249
250 outb(0x04, ioaddr + NE3210_RESET_PORT);
251 if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);
252
253 mdelay(2);
254
255 ei_status.txing = 0;
256 outb(0x01, ioaddr + NE3210_RESET_PORT);
257 if (ei_debug > 1) printk("reset done\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258}
259
260/*
261 * Note: In the following three functions is the implicit assumption
262 * that the associated memcpy will only use "rep; movsl" as long as
263 * we keep the counts as some multiple of doublewords. This is a
264 * requirement of the hardware, and also prevents us from using
265 * eth_io_copy_and_sum() since we can't guarantee it will limit
266 * itself to doubleword access.
267 */
268
269/*
270 * Grab the 8390 specific header. Similar to the block_input routine, but
271 * we don't need to be concerned with ring wrap as the header will be at
272 * the start of a page, so we optimize accordingly. (A single doubleword.)
273 */
274
275static void
276ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
277{
278 void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
279 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
280 hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
281}
282
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400283/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 * Block input and output are easy on shared memory ethercards, the only
285 * complication is when the ring buffer wraps. The count will already
286 * be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
287 */
288
289static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb,
290 int ring_offset)
291{
292 void __iomem *start = ei_status.mem + ring_offset - NE3210_START_PG*256;
293
294 if (ring_offset + count > NE3210_STOP_PG*256) {
295 /* Packet wraps over end of ring buffer. */
296 int semi_count = NE3210_STOP_PG*256 - ring_offset;
297 memcpy_fromio(skb->data, start, semi_count);
298 count -= semi_count;
299 memcpy_fromio(skb->data + semi_count,
300 ei_status.mem + TX_PAGES*256, count);
301 } else {
302 /* Packet is in one chunk. */
303 memcpy_fromio(skb->data, start, count);
304 }
305}
306
307static void ne3210_block_output(struct net_device *dev, int count,
308 const unsigned char *buf, int start_page)
309{
310 void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);
311
312 count = (count + 3) & ~3; /* Round up to doubleword */
313 memcpy_toio(shmem, buf, count);
314}
315
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316static struct eisa_device_id ne3210_ids[] = {
317 { "EGL0101" },
318 { "NVL1801" },
319 { "" },
320};
Michael Tokarev07563c72006-09-27 01:50:56 -0700321MODULE_DEVICE_TABLE(eisa, ne3210_ids);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322
323static struct eisa_driver ne3210_eisa_driver = {
324 .id_table = ne3210_ids,
325 .driver = {
326 .name = "ne3210",
327 .probe = ne3210_eisa_probe,
328 .remove = __devexit_p (ne3210_eisa_remove),
329 },
330};
331
332MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
333MODULE_LICENSE("GPL");
334MODULE_DEVICE_TABLE(eisa, ne3210_ids);
335
Adrian Bunk9d8cc1b2005-09-03 14:04:55 -0700336static int ne3210_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337{
338 return eisa_driver_register (&ne3210_eisa_driver);
339}
340
Adrian Bunk9d8cc1b2005-09-03 14:04:55 -0700341static void ne3210_cleanup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342{
343 eisa_driver_unregister (&ne3210_eisa_driver);
344}
345
346module_init (ne3210_init);
347module_exit (ne3210_cleanup);