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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
48static int ne3210_open(struct net_device *dev);
49static int ne3210_close(struct net_device *dev);
50
51static void ne3210_reset_8390(struct net_device *dev);
52
53static void ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
54static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
55static void ne3210_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page);
56
57#define NE3210_START_PG 0x00 /* First page of TX buffer */
58#define NE3210_STOP_PG 0x80 /* Last page +1 of RX ring */
59
60#define NE3210_IO_EXTENT 0x20
61#define NE3210_SA_PROM 0x16 /* Start of e'net addr. */
62#define NE3210_RESET_PORT 0xc84
63#define NE3210_NIC_OFFSET 0x00 /* Hello, the 8390 is *here* */
64
65#define NE3210_ADDR0 0x00 /* 3 byte vendor prefix */
66#define NE3210_ADDR1 0x00
67#define NE3210_ADDR2 0x1b
68
69#define NE3210_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */
70#define NE3210_CFG2 0xc90
71#define NE3210_CFG_EXTENT (NE3210_CFG2 - NE3210_CFG1 + 1)
72
73/*
74 * You can OR any of the following bits together and assign it
75 * to NE3210_DEBUG to get verbose driver info during operation.
76 * Currently only the probe one is implemented.
77 */
78
79#define NE3210_D_PROBE 0x01
80#define NE3210_D_RX_PKT 0x02
81#define NE3210_D_TX_PKT 0x04
82#define NE3210_D_IRQ 0x08
83
84#define NE3210_DEBUG 0x0
85
86static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
87static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0};
88static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"};
89static int ifmap_val[] __initdata = {
90 IF_PORT_10BASET,
91 IF_PORT_UNKNOWN,
92 IF_PORT_10BASE2,
93 IF_PORT_AUI,
94};
95
96static int __init ne3210_eisa_probe (struct device *device)
97{
98 unsigned long ioaddr, phys_mem;
99 int i, retval, port_index;
100 struct eisa_device *edev = to_eisa_device (device);
101 struct net_device *dev;
102
103 /* Allocate dev->priv and fill in 8390 specific dev fields. */
104 if (!(dev = alloc_ei_netdev ())) {
105 printk ("ne3210.c: unable to allocate memory for dev!\n");
106 return -ENOMEM;
107 }
108
109 SET_MODULE_OWNER(dev);
110 SET_NETDEV_DEV(dev, device);
111 device->driver_data = dev;
112 ioaddr = edev->base_addr;
113
114 if (!request_region(ioaddr, NE3210_IO_EXTENT, DRV_NAME)) {
115 retval = -EBUSY;
116 goto out;
117 }
118
119 if (!request_region(ioaddr + NE3210_CFG1,
120 NE3210_CFG_EXTENT, DRV_NAME)) {
121 retval = -EBUSY;
122 goto out1;
123 }
124
125#if NE3210_DEBUG & NE3210_D_PROBE
126 printk("ne3210-debug: probe at %#x, ID %s\n", ioaddr, edev->id.sig);
127 printk("ne3210-debug: config regs: %#x %#x\n",
128 inb(ioaddr + NE3210_CFG1), inb(ioaddr + NE3210_CFG2));
129#endif
130
131
132 port_index = inb(ioaddr + NE3210_CFG2) >> 6;
133 printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr:",
134 edev->slot, ifmap[port_index]);
135 for(i = 0; i < ETHER_ADDR_LEN; i++)
136 printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i)));
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400137
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
139 /* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
140 dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
141 printk(".\nne3210.c: using IRQ %d, ", dev->irq);
142
143 retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
144 if (retval) {
145 printk (" unable to get IRQ %d.\n", dev->irq);
146 goto out2;
147 }
148
149 phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;
150
151 /*
152 BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
153 the card mem within the region covered by `normal' RAM !!!
154 */
155 if (phys_mem > 1024*1024) { /* phys addr > 1MB */
156 if (phys_mem < virt_to_phys(high_memory)) {
157 printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
158 printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
159 printk(KERN_CRIT "ne3210.c: or to an address above 0x%lx.\n", virt_to_phys(high_memory));
160 printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
161 retval = -EINVAL;
162 goto out3;
163 }
164 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
167 printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
168 phys_mem);
169 goto out3;
170 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400171
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 printk("%dkB memory at physical address %#lx\n",
173 NE3210_STOP_PG/4, phys_mem);
174
175 ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
176 if (!ei_status.mem) {
177 printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
178 printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
179 retval = -EAGAIN;
180 goto out4;
181 }
182 printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
183 NE3210_STOP_PG/4, ei_status.mem);
184 dev->mem_start = (unsigned long)ei_status.mem;
185 dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;
186
187 /* The 8390 offset is zero for the NE3210 */
188 dev->base_addr = ioaddr;
189
190 ei_status.name = "NE3210";
191 ei_status.tx_start_page = NE3210_START_PG;
192 ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
193 ei_status.stop_page = NE3210_STOP_PG;
194 ei_status.word16 = 1;
195 ei_status.priv = phys_mem;
196
197 if (ei_debug > 0)
Adrian Bunk9d8cc1b2005-09-03 14:04:55 -0700198 printk("ne3210 loaded.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199
200 ei_status.reset_8390 = &ne3210_reset_8390;
201 ei_status.block_input = &ne3210_block_input;
202 ei_status.block_output = &ne3210_block_output;
203 ei_status.get_8390_hdr = &ne3210_get_8390_hdr;
204
205 dev->open = &ne3210_open;
206 dev->stop = &ne3210_close;
207#ifdef CONFIG_NET_POLL_CONTROLLER
208 dev->poll_controller = ei_poll;
209#endif
210 dev->if_port = ifmap_val[port_index];
211
212 if ((retval = register_netdev (dev)))
213 goto out5;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400214
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 NS8390_init(dev, 0);
216 return 0;
217
218 out5:
219 iounmap(ei_status.mem);
220 out4:
221 release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
222 out3:
223 free_irq (dev->irq, dev);
224 out2:
225 release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
226 out1:
227 release_region (ioaddr, NE3210_IO_EXTENT);
228 out:
229 free_netdev (dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400230
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 return retval;
232}
233
234static int __devexit ne3210_eisa_remove (struct device *device)
235{
236 struct net_device *dev = device->driver_data;
237 unsigned long ioaddr = to_eisa_device (device)->base_addr;
238
239 unregister_netdev (dev);
240 iounmap(ei_status.mem);
241 release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
242 free_irq (dev->irq, dev);
243 release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
244 release_region (ioaddr, NE3210_IO_EXTENT);
245 free_netdev (dev);
246
247 return 0;
248}
249
250/*
251 * Reset by toggling the "Board Enable" bits (bit 2 and 0).
252 */
253
254static void ne3210_reset_8390(struct net_device *dev)
255{
256 unsigned short ioaddr = dev->base_addr;
257
258 outb(0x04, ioaddr + NE3210_RESET_PORT);
259 if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);
260
261 mdelay(2);
262
263 ei_status.txing = 0;
264 outb(0x01, ioaddr + NE3210_RESET_PORT);
265 if (ei_debug > 1) printk("reset done\n");
266
267 return;
268}
269
270/*
271 * Note: In the following three functions is the implicit assumption
272 * that the associated memcpy will only use "rep; movsl" as long as
273 * we keep the counts as some multiple of doublewords. This is a
274 * requirement of the hardware, and also prevents us from using
275 * eth_io_copy_and_sum() since we can't guarantee it will limit
276 * itself to doubleword access.
277 */
278
279/*
280 * Grab the 8390 specific header. Similar to the block_input routine, but
281 * we don't need to be concerned with ring wrap as the header will be at
282 * the start of a page, so we optimize accordingly. (A single doubleword.)
283 */
284
285static void
286ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
287{
288 void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
289 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
290 hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
291}
292
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400293/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 * Block input and output are easy on shared memory ethercards, the only
295 * complication is when the ring buffer wraps. The count will already
296 * be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
297 */
298
299static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb,
300 int ring_offset)
301{
302 void __iomem *start = ei_status.mem + ring_offset - NE3210_START_PG*256;
303
304 if (ring_offset + count > NE3210_STOP_PG*256) {
305 /* Packet wraps over end of ring buffer. */
306 int semi_count = NE3210_STOP_PG*256 - ring_offset;
307 memcpy_fromio(skb->data, start, semi_count);
308 count -= semi_count;
309 memcpy_fromio(skb->data + semi_count,
310 ei_status.mem + TX_PAGES*256, count);
311 } else {
312 /* Packet is in one chunk. */
313 memcpy_fromio(skb->data, start, count);
314 }
315}
316
317static void ne3210_block_output(struct net_device *dev, int count,
318 const unsigned char *buf, int start_page)
319{
320 void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);
321
322 count = (count + 3) & ~3; /* Round up to doubleword */
323 memcpy_toio(shmem, buf, count);
324}
325
326static int ne3210_open(struct net_device *dev)
327{
328 ei_open(dev);
329 return 0;
330}
331
332static int ne3210_close(struct net_device *dev)
333{
334
335 if (ei_debug > 1)
336 printk("%s: Shutting down ethercard.\n", dev->name);
337
338 ei_close(dev);
339 return 0;
340}
341
342static struct eisa_device_id ne3210_ids[] = {
343 { "EGL0101" },
344 { "NVL1801" },
345 { "" },
346};
Michael Tokarev07563c72006-09-27 01:50:56 -0700347MODULE_DEVICE_TABLE(eisa, ne3210_ids);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
349static struct eisa_driver ne3210_eisa_driver = {
350 .id_table = ne3210_ids,
351 .driver = {
352 .name = "ne3210",
353 .probe = ne3210_eisa_probe,
354 .remove = __devexit_p (ne3210_eisa_remove),
355 },
356};
357
358MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
359MODULE_LICENSE("GPL");
360MODULE_DEVICE_TABLE(eisa, ne3210_ids);
361
Adrian Bunk9d8cc1b2005-09-03 14:04:55 -0700362static int ne3210_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363{
364 return eisa_driver_register (&ne3210_eisa_driver);
365}
366
Adrian Bunk9d8cc1b2005-09-03 14:04:55 -0700367static void ne3210_cleanup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368{
369 eisa_driver_unregister (&ne3210_eisa_driver);
370}
371
372module_init (ne3210_init);
373module_exit (ne3210_cleanup);