1 /*
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
17 The NE3210 is an EISA shared memory NS8390 implementation. Shared
18 memory address > 1MB should work with this driver.
19
20 Note that the .cfg file (3/11/93, v1.0) has AUI and BNC switched
21 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
29 #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>
39 #include <linux/mm.h>
40
41 #include <asm/io.h>
42 #include <asm/system.h>
43
44 #include "8390.h"
45
46 #define DRV_NAME "ne3210"
47
48 static int ne3210_open(struct net_device *dev);
49 static int ne3210_close(struct net_device *dev);
50
51 static void ne3210_reset_8390(struct net_device *dev);
52
53 static void ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
54 static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
55 static 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
86 static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
87 static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0};
88 static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"};
89 static int ifmap_val[] __initdata = {
90 IF_PORT_10BASET,
91 IF_PORT_UNKNOWN,
92 IF_PORT_10BASE2,
93 IF_PORT_AUI,
94 };
95
96 static 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 DECLARE_MAC_BUF(mac);
103
104 /* Allocate dev->priv and fill in 8390 specific dev fields. */
105 if (!(dev = alloc_ei_netdev ())) {
106 printk ("ne3210.c: unable to allocate memory for dev!\n");
107 return -ENOMEM;
108 }
109
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 port_index = inb(ioaddr + NE3210_CFG2) >> 6;
132 for(i = 0; i < ETHER_ADDR_LEN; i++)
133 dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i);
134 printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr: %s.\n",
135 edev->slot, ifmap[port_index], print_mac(mac, dev->dev_addr));
136
137 /* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
138 dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
139 printk("ne3210.c: using IRQ %d, ", dev->irq);
140
141 retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
142 if (retval) {
143 printk (" unable to get IRQ %d.\n", dev->irq);
144 goto out2;
145 }
146
147 phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;
148
149 /*
150 BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
151 the card mem within the region covered by `normal' RAM !!!
152 */
153 if (phys_mem > 1024*1024) { /* phys addr > 1MB */
154 if (phys_mem < virt_to_phys(high_memory)) {
155 printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
156 printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
157 printk(KERN_CRIT "ne3210.c: or to an address above 0x%lx.\n", virt_to_phys(high_memory));
158 printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
159 retval = -EINVAL;
160 goto out3;
161 }
162 }
163
164 if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
165 printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
166 phys_mem);
167 goto out3;
168 }
169
170 printk("%dkB memory at physical address %#lx\n",
171 NE3210_STOP_PG/4, phys_mem);
172
173 ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
174 if (!ei_status.mem) {
175 printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
176 printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
177 retval = -EAGAIN;
178 goto out4;
179 }
180 printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
181 NE3210_STOP_PG/4, ei_status.mem);
182 dev->mem_start = (unsigned long)ei_status.mem;
183 dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;
184
185 /* The 8390 offset is zero for the NE3210 */
186 dev->base_addr = ioaddr;
187
188 ei_status.name = "NE3210";
189 ei_status.tx_start_page = NE3210_START_PG;
190 ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
191 ei_status.stop_page = NE3210_STOP_PG;
192 ei_status.word16 = 1;
193 ei_status.priv = phys_mem;
194
195 if (ei_debug > 0)
196 printk("ne3210 loaded.\n");
197
198 ei_status.reset_8390 = &ne3210_reset_8390;
199 ei_status.block_input = &ne3210_block_input;
200 ei_status.block_output = &ne3210_block_output;
201 ei_status.get_8390_hdr = &ne3210_get_8390_hdr;
202
203 dev->open = &ne3210_open;
204 dev->stop = &ne3210_close;
205 #ifdef CONFIG_NET_POLL_CONTROLLER
206 dev->poll_controller = ei_poll;
207 #endif
208 dev->if_port = ifmap_val[port_index];
209
210 if ((retval = register_netdev (dev)))
211 goto out5;
212
213 NS8390_init(dev, 0);
214 return 0;
215
216 out5:
217 iounmap(ei_status.mem);
218 out4:
219 release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
220 out3:
221 free_irq (dev->irq, dev);
222 out2:
223 release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
224 out1:
225 release_region (ioaddr, NE3210_IO_EXTENT);
226 out:
227 free_netdev (dev);
228
229 return retval;
230 }
231
232 static int __devexit ne3210_eisa_remove (struct device *device)
233 {
234 struct net_device *dev = device->driver_data;
235 unsigned long ioaddr = to_eisa_device (device)->base_addr;
236
237 unregister_netdev (dev);
238 iounmap(ei_status.mem);
239 release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
240 free_irq (dev->irq, dev);
241 release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
242 release_region (ioaddr, NE3210_IO_EXTENT);
243 free_netdev (dev);
244
245 return 0;
246 }
247
248 /*
249 * Reset by toggling the "Board Enable" bits (bit 2 and 0).
250 */
251
252 static void ne3210_reset_8390(struct net_device *dev)
253 {
254 unsigned short ioaddr = dev->base_addr;
255
256 outb(0x04, ioaddr + NE3210_RESET_PORT);
257 if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);
258
259 mdelay(2);
260
261 ei_status.txing = 0;
262 outb(0x01, ioaddr + NE3210_RESET_PORT);
263 if (ei_debug > 1) printk("reset done\n");
264
265 return;
266 }
267
268 /*
269 * Note: In the following three functions is the implicit assumption
270 * that the associated memcpy will only use "rep; movsl" as long as
271 * we keep the counts as some multiple of doublewords. This is a
272 * requirement of the hardware, and also prevents us from using
273 * eth_io_copy_and_sum() since we can't guarantee it will limit
274 * itself to doubleword access.
275 */
276
277 /*
278 * Grab the 8390 specific header. Similar to the block_input routine, but
279 * we don't need to be concerned with ring wrap as the header will be at
280 * the start of a page, so we optimize accordingly. (A single doubleword.)
281 */
282
283 static void
284 ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
285 {
286 void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
287 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
288 hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
289 }
290
291 /*
292 * Block input and output are easy on shared memory ethercards, the only
293 * complication is when the ring buffer wraps. The count will already
294 * be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
295 */
296
297 static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb,
298 int ring_offset)
299 {
300 void __iomem *start = ei_status.mem + ring_offset - NE3210_START_PG*256;
301
302 if (ring_offset + count > NE3210_STOP_PG*256) {
303 /* Packet wraps over end of ring buffer. */
304 int semi_count = NE3210_STOP_PG*256 - ring_offset;
305 memcpy_fromio(skb->data, start, semi_count);
306 count -= semi_count;
307 memcpy_fromio(skb->data + semi_count,
308 ei_status.mem + TX_PAGES*256, count);
309 } else {
310 /* Packet is in one chunk. */
311 memcpy_fromio(skb->data, start, count);
312 }
313 }
314
315 static void ne3210_block_output(struct net_device *dev, int count,
316 const unsigned char *buf, int start_page)
317 {
318 void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);
319
320 count = (count + 3) & ~3; /* Round up to doubleword */
321 memcpy_toio(shmem, buf, count);
322 }
323
324 static int ne3210_open(struct net_device *dev)
325 {
326 ei_open(dev);
327 return 0;
328 }
329
330 static int ne3210_close(struct net_device *dev)
331 {
332
333 if (ei_debug > 1)
334 printk("%s: Shutting down ethercard.\n", dev->name);
335
336 ei_close(dev);
337 return 0;
338 }
339
340 static struct eisa_device_id ne3210_ids[] = {
341 { "EGL0101" },
342 { "NVL1801" },
343 { "" },
344 };
345 MODULE_DEVICE_TABLE(eisa, ne3210_ids);
346
347 static struct eisa_driver ne3210_eisa_driver = {
348 .id_table = ne3210_ids,
349 .driver = {
350 .name = "ne3210",
351 .probe = ne3210_eisa_probe,
352 .remove = __devexit_p (ne3210_eisa_remove),
353 },
354 };
355
356 MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
357 MODULE_LICENSE("GPL");
358 MODULE_DEVICE_TABLE(eisa, ne3210_ids);
359
360 static int ne3210_init(void)
361 {
362 return eisa_driver_register (&ne3210_eisa_driver);
363 }
364
365 static void ne3210_cleanup(void)
366 {
367 eisa_driver_unregister (&ne3210_eisa_driver);
368 }
369
370 module_init (ne3210_init);
371 module_exit (ne3210_cleanup);
372
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