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Linux 2.6.17.7
[linux/fpc-iii.git] / drivers / net / zorro8390.c
blob8037e5806d0a48b33a28815cdd828cb90cfe77eb
1 /*
2 * Amiga Linux/m68k and Linux/PPC Zorro NS8390 Ethernet Driver
3 *
4 * (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM)
5 *
6 * ---------------------------------------------------------------------------
7 *
8 * This program is based on all the other NE2000 drivers for Linux
9 *
10 * ---------------------------------------------------------------------------
11 *
12 * This file is subject to the terms and conditions of the GNU General Public
13 * License. See the file COPYING in the main directory of the Linux
14 * distribution for more details.
15 *
16 * ---------------------------------------------------------------------------
17 *
18 * The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS
19 * Ethernet Controllers.
20 */
21
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/errno.h>
25 #include <linux/init.h>
26 #include <linux/delay.h>
27 #include <linux/netdevice.h>
28 #include <linux/etherdevice.h>
29 #include <linux/zorro.h>
30 #include <linux/jiffies.h>
31
32 #include <asm/system.h>
33 #include <asm/irq.h>
34 #include <asm/amigaints.h>
35 #include <asm/amigahw.h>
36
37 #include "8390.h"
38
39
40 #define DRV_NAME "zorro8390"
41
42 #define NE_BASE (dev->base_addr)
43 #define NE_CMD (0x00*2)
44 #define NE_DATAPORT (0x10*2) /* NatSemi-defined port window offset. */
45 #define NE_RESET (0x1f*2) /* Issue a read to reset, a write to clear. */
46 #define NE_IO_EXTENT (0x20*2)
47
48 #define NE_EN0_ISR (0x07*2)
49 #define NE_EN0_DCFG (0x0e*2)
50
51 #define NE_EN0_RSARLO (0x08*2)
52 #define NE_EN0_RSARHI (0x09*2)
53 #define NE_EN0_RCNTLO (0x0a*2)
54 #define NE_EN0_RXCR (0x0c*2)
55 #define NE_EN0_TXCR (0x0d*2)
56 #define NE_EN0_RCNTHI (0x0b*2)
57 #define NE_EN0_IMR (0x0f*2)
58
59 #define NESM_START_PG 0x40 /* First page of TX buffer */
60 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
61
62
63 #define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8))
64
65
66 static struct card_info {
67 zorro_id id;
68 const char *name;
69 unsigned int offset;
70 } cards[] __devinitdata = {
71 { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 },
72 { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 },
73 };
74
75 static int __devinit zorro8390_init_one(struct zorro_dev *z,
76 const struct zorro_device_id *ent);
77 static int __devinit zorro8390_init(struct net_device *dev,
78 unsigned long board, const char *name,
79 unsigned long ioaddr);
80 static int zorro8390_open(struct net_device *dev);
81 static int zorro8390_close(struct net_device *dev);
82 static void zorro8390_reset_8390(struct net_device *dev);
83 static void zorro8390_get_8390_hdr(struct net_device *dev,
84 struct e8390_pkt_hdr *hdr, int ring_page);
85 static void zorro8390_block_input(struct net_device *dev, int count,
86 struct sk_buff *skb, int ring_offset);
87 static void zorro8390_block_output(struct net_device *dev, const int count,
88 const unsigned char *buf,
89 const int start_page);
90 static void __devexit zorro8390_remove_one(struct zorro_dev *z);
91
92 static struct zorro_device_id zorro8390_zorro_tbl[] __devinitdata = {
93 { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, },
94 { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, },
95 { 0 }
96 };
97
98 static struct zorro_driver zorro8390_driver = {
99 .name = "zorro8390",
100 .id_table = zorro8390_zorro_tbl,
101 .probe = zorro8390_init_one,
102 .remove = __devexit_p(zorro8390_remove_one),
103 };
104
105 static int __devinit zorro8390_init_one(struct zorro_dev *z,
106 const struct zorro_device_id *ent)
107 {
108 struct net_device *dev;
109 unsigned long board, ioaddr;
110 int err, i;
111
112 for (i = ARRAY_SIZE(cards)-1; i >= 0; i--)
113 if (z->id == cards[i].id)
114 break;
115 board = z->resource.start;
116 ioaddr = board+cards[i].offset;
117 dev = alloc_ei_netdev();
118 if (!dev)
119 return -ENOMEM;
120 SET_MODULE_OWNER(dev);
121 if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, DRV_NAME)) {
122 free_netdev(dev);
123 return -EBUSY;
124 }
125 if ((err = zorro8390_init(dev, board, cards[i].name,
126 ZTWO_VADDR(ioaddr)))) {
127 release_mem_region(ioaddr, NE_IO_EXTENT*2);
128 free_netdev(dev);
129 return err;
130 }
131 zorro_set_drvdata(z, dev);
132 return 0;
133 }
134
135 static int __devinit zorro8390_init(struct net_device *dev,
136 unsigned long board, const char *name,
137 unsigned long ioaddr)
138 {
139 int i;
140 int err;
141 unsigned char SA_prom[32];
142 int start_page, stop_page;
143 static u32 zorro8390_offsets[16] = {
144 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
145 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
146 };
147
148 /* Reset card. Who knows what dain-bramaged state it was left in. */
149 {
150 unsigned long reset_start_time = jiffies;
151
152 z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET);
153
154 while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
155 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
156 printk(KERN_WARNING " not found (no reset ack).\n");
157 return -ENODEV;
158 }
159
160 z_writeb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */
161 }
162
163 /* Read the 16 bytes of station address PROM.
164 We must first initialize registers, similar to NS8390_init(eifdev, 0).
165 We can't reliably read the SAPROM address without this.
166 (I learned the hard way!). */
167 {
168 struct {
169 u32 value;
170 u32 offset;
171 } program_seq[] = {
172 {E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
173 {0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */
174 {0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */
175 {0x00, NE_EN0_RCNTHI},
176 {0x00, NE_EN0_IMR}, /* Mask completion irq. */
177 {0xFF, NE_EN0_ISR},
178 {E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */
179 {E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */
180 {32, NE_EN0_RCNTLO},
181 {0x00, NE_EN0_RCNTHI},
182 {0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */
183 {0x00, NE_EN0_RSARHI},
184 {E8390_RREAD+E8390_START, NE_CMD},
185 };
186 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) {
187 z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset);
188 }
189 }
190 for (i = 0; i < 16; i++) {
191 SA_prom[i] = z_readb(ioaddr + NE_DATAPORT);
192 (void)z_readb(ioaddr + NE_DATAPORT);
193 }
194
195 /* We must set the 8390 for word mode. */
196 z_writeb(0x49, ioaddr + NE_EN0_DCFG);
197 start_page = NESM_START_PG;
198 stop_page = NESM_STOP_PG;
199
200 dev->base_addr = ioaddr;
201 dev->irq = IRQ_AMIGA_PORTS;
202
203 /* Install the Interrupt handler */
204 i = request_irq(IRQ_AMIGA_PORTS, ei_interrupt, SA_SHIRQ, DRV_NAME, dev);
205 if (i) return i;
206
207 for(i = 0; i < ETHER_ADDR_LEN; i++) {
208 #ifdef DEBUG
209 printk(" %2.2x", SA_prom[i]);
210 #endif
211 dev->dev_addr[i] = SA_prom[i];
212 }
213
214 ei_status.name = name;
215 ei_status.tx_start_page = start_page;
216 ei_status.stop_page = stop_page;
217 ei_status.word16 = 1;
218
219 ei_status.rx_start_page = start_page + TX_PAGES;
220
221 ei_status.reset_8390 = &zorro8390_reset_8390;
222 ei_status.block_input = &zorro8390_block_input;
223 ei_status.block_output = &zorro8390_block_output;
224 ei_status.get_8390_hdr = &zorro8390_get_8390_hdr;
225 ei_status.reg_offset = zorro8390_offsets;
226 dev->open = &zorro8390_open;
227 dev->stop = &zorro8390_close;
228 #ifdef CONFIG_NET_POLL_CONTROLLER
229 dev->poll_controller = ei_poll;
230 #endif
231
232 NS8390_init(dev, 0);
233 err = register_netdev(dev);
234 if (err) {
235 free_irq(IRQ_AMIGA_PORTS, dev);
236 return err;
237 }
238
239 printk(KERN_INFO "%s: %s at 0x%08lx, Ethernet Address "
240 "%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, name, board,
241 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
242 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
243
244 return 0;
245 }
246
247 static int zorro8390_open(struct net_device *dev)
248 {
249 ei_open(dev);
250 return 0;
251 }
252
253 static int zorro8390_close(struct net_device *dev)
254 {
255 if (ei_debug > 1)
256 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
257 ei_close(dev);
258 return 0;
259 }
260
261 /* Hard reset the card. This used to pause for the same period that a
262 8390 reset command required, but that shouldn't be necessary. */
263 static void zorro8390_reset_8390(struct net_device *dev)
264 {
265 unsigned long reset_start_time = jiffies;
266
267 if (ei_debug > 1)
268 printk(KERN_DEBUG "resetting the 8390 t=%ld...\n", jiffies);
269
270 z_writeb(z_readb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
271
272 ei_status.txing = 0;
273 ei_status.dmaing = 0;
274
275 /* This check _should_not_ be necessary, omit eventually. */
276 while ((z_readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
277 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
278 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n",
279 dev->name);
280 break;
281 }
282 z_writeb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr. */
283 }
284
285 /* Grab the 8390 specific header. Similar to the block_input routine, but
286 we don't need to be concerned with ring wrap as the header will be at
287 the start of a page, so we optimize accordingly. */
288
289 static void zorro8390_get_8390_hdr(struct net_device *dev,
290 struct e8390_pkt_hdr *hdr, int ring_page)
291 {
292 int nic_base = dev->base_addr;
293 int cnt;
294 short *ptrs;
295
296 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
297 if (ei_status.dmaing) {
298 printk(KERN_ERR "%s: DMAing conflict in ne_get_8390_hdr "
299 "[DMAstat:%d][irqlock:%d].\n", dev->name, ei_status.dmaing,
300 ei_status.irqlock);
301 return;
302 }
303
304 ei_status.dmaing |= 0x01;
305 z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
306 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
307 z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
308 z_writeb(0, nic_base + NE_EN0_RCNTHI);
309 z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
310 z_writeb(ring_page, nic_base + NE_EN0_RSARHI);
311 z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
312
313 ptrs = (short*)hdr;
314 for (cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
315 *ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
316
317 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
318
319 hdr->count = WORDSWAP(hdr->count);
320
321 ei_status.dmaing &= ~0x01;
322 }
323
324 /* Block input and output, similar to the Crynwr packet driver. If you
325 are porting to a new ethercard, look at the packet driver source for hints.
326 The NEx000 doesn't share the on-board packet memory -- you have to put
327 the packet out through the "remote DMA" dataport using z_writeb. */
328
329 static void zorro8390_block_input(struct net_device *dev, int count,
330 struct sk_buff *skb, int ring_offset)
331 {
332 int nic_base = dev->base_addr;
333 char *buf = skb->data;
334 short *ptrs;
335 int cnt;
336
337 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
338 if (ei_status.dmaing) {
339 printk(KERN_ERR "%s: DMAing conflict in ne_block_input "
340 "[DMAstat:%d][irqlock:%d].\n",
341 dev->name, ei_status.dmaing, ei_status.irqlock);
342 return;
343 }
344 ei_status.dmaing |= 0x01;
345 z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
346 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
347 z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
348 z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
349 z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
350 z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
351 z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
352 ptrs = (short*)buf;
353 for (cnt = 0; cnt < (count>>1); cnt++)
354 *ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
355 if (count & 0x01)
356 buf[count-1] = z_readb(NE_BASE + NE_DATAPORT);
357
358 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
359 ei_status.dmaing &= ~0x01;
360 }
361
362 static void zorro8390_block_output(struct net_device *dev, int count,
363 const unsigned char *buf,
364 const int start_page)
365 {
366 int nic_base = NE_BASE;
367 unsigned long dma_start;
368 short *ptrs;
369 int cnt;
370
371 /* Round the count up for word writes. Do we need to do this?
372 What effect will an odd byte count have on the 8390?
373 I should check someday. */
374 if (count & 0x01)
375 count++;
376
377 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
378 if (ei_status.dmaing) {
379 printk(KERN_ERR "%s: DMAing conflict in ne_block_output."
380 "[DMAstat:%d][irqlock:%d]\n", dev->name, ei_status.dmaing,
381 ei_status.irqlock);
382 return;
383 }
384 ei_status.dmaing |= 0x01;
385 /* We should already be in page 0, but to be safe... */
386 z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
387
388 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
389
390 /* Now the normal output. */
391 z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
392 z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
393 z_writeb(0x00, nic_base + NE_EN0_RSARLO);
394 z_writeb(start_page, nic_base + NE_EN0_RSARHI);
395
396 z_writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
397 ptrs = (short*)buf;
398 for (cnt = 0; cnt < count>>1; cnt++)
399 z_writew(*ptrs++, NE_BASE+NE_DATAPORT);
400
401 dma_start = jiffies;
402
403 while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
404 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
405 printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n",
406 dev->name);
407 zorro8390_reset_8390(dev);
408 NS8390_init(dev,1);
409 break;
410 }
411
412 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
413 ei_status.dmaing &= ~0x01;
414 return;
415 }
416
417 static void __devexit zorro8390_remove_one(struct zorro_dev *z)
418 {
419 struct net_device *dev = zorro_get_drvdata(z);
420
421 unregister_netdev(dev);
422 free_irq(IRQ_AMIGA_PORTS, dev);
423 release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT*2);
424 free_netdev(dev);
425 }
426
427 static int __init zorro8390_init_module(void)
428 {
429 return zorro_register_driver(&zorro8390_driver);
430 }
431
432 static void __exit zorro8390_cleanup_module(void)
433 {
434 zorro_unregister_driver(&zorro8390_driver);
435 }
436
437 module_init(zorro8390_init_module);
438 module_exit(zorro8390_cleanup_module);
439
440 MODULE_LICENSE("GPL");
Linux with added FPC-III support