2 * Amiga Linux/m68k and Linux/PPC Ariadne II and X-Surf Ethernet Driver
4 * (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM)
6 * ---------------------------------------------------------------------------
8 * This program is based on all the other NE2000 drivers for Linux
10 * ---------------------------------------------------------------------------
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.
16 * ---------------------------------------------------------------------------
18 * The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS
19 * Ethernet Controllers.
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/sched.h>
25 #include <linux/errno.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/netdevice.h>
29 #include <linux/etherdevice.h>
30 #include <linux/zorro.h>
32 #include <asm/system.h>
35 #include <asm/amigaints.h>
36 #include <asm/amigahw.h>
41 #define NE_BASE (dev->base_addr)
42 #define NE_CMD (0x00*2)
43 #define NE_DATAPORT (0x10*2) /* NatSemi-defined port window offset. */
44 #define NE_RESET (0x1f*2) /* Issue a read to reset, a write to clear. */
45 #define NE_IO_EXTENT (0x20*2)
47 #define NE_EN0_ISR (0x07*2)
48 #define NE_EN0_DCFG (0x0e*2)
50 #define NE_EN0_RSARLO (0x08*2)
51 #define NE_EN0_RSARHI (0x09*2)
52 #define NE_EN0_RCNTLO (0x0a*2)
53 #define NE_EN0_RXCR (0x0c*2)
54 #define NE_EN0_TXCR (0x0d*2)
55 #define NE_EN0_RCNTHI (0x0b*2)
56 #define NE_EN0_IMR (0x0f*2)
58 #define NESM_START_PG 0x40 /* First page of TX buffer */
59 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
62 #define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8))
65 static struct net_device *root_ariadne2_dev;
68 static const struct card_info {
72 } cards[] __initdata = {
73 { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 },
74 { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 },
77 static int __init ariadne2_probe(void);
78 static int __init ariadne2_init(struct net_device *dev, unsigned long board,
79 const char *name, unsigned long ioaddr);
80 static int ariadne2_open(struct net_device *dev);
81 static int ariadne2_close(struct net_device *dev);
82 static void ariadne2_reset_8390(struct net_device *dev);
83 static void ariadne2_get_8390_hdr(struct net_device *dev,
84 struct e8390_pkt_hdr *hdr, int ring_page);
85 static void ariadne2_block_input(struct net_device *dev, int count,
86 struct sk_buff *skb, int ring_offset);
87 static void ariadne2_block_output(struct net_device *dev, const int count,
88 const unsigned char *buf,
89 const int start_page);
90 static void __exit ariadne2_cleanup(void);
92 static int __init ariadne2_probe(void)
94 struct net_device *dev;
95 struct zorro_dev *z = NULL;
96 unsigned long board, ioaddr;
100 while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
101 for (i = ARRAY_SIZE(cards)-1; i >= 0; i--)
102 if (z->id == cards[i].id)
106 board = z->resource.start;
107 ioaddr = board+cards[i].offset;
108 dev = init_etherdev(0, 0);
109 SET_MODULE_OWNER(dev);
112 if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, dev->name)) {
116 if ((err = ariadne2_init(dev, board, cards[i].name,
117 ZTWO_VADDR(ioaddr)))) {
118 release_mem_region(ioaddr, NE_IO_EXTENT*2);
126 printk("No Ariadne II or X-Surf ethernet card found.\n");
130 static int __init ariadne2_init(struct net_device *dev, unsigned long board,
131 const char *name, unsigned long ioaddr)
134 unsigned char SA_prom[32];
135 int start_page, stop_page;
136 static u32 ariadne2_offsets[16] = {
137 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
138 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
141 /* Reset card. Who knows what dain-bramaged state it was left in. */
143 unsigned long reset_start_time = jiffies;
145 z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET);
147 while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
148 if (jiffies - reset_start_time > 2*HZ/100) {
149 printk(" not found (no reset ack).\n");
153 z_writeb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */
156 /* Read the 16 bytes of station address PROM.
157 We must first initialize registers, similar to NS8390_init(eifdev, 0).
158 We can't reliably read the SAPROM address without this.
159 (I learned the hard way!). */
165 {E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
166 {0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */
167 {0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */
168 {0x00, NE_EN0_RCNTHI},
169 {0x00, NE_EN0_IMR}, /* Mask completion irq. */
171 {E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */
172 {E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */
174 {0x00, NE_EN0_RCNTHI},
175 {0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */
176 {0x00, NE_EN0_RSARHI},
177 {E8390_RREAD+E8390_START, NE_CMD},
179 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) {
180 z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset);
183 for (i = 0; i < 16; i++) {
184 SA_prom[i] = z_readb(ioaddr + NE_DATAPORT);
185 (void)z_readb(ioaddr + NE_DATAPORT);
188 /* We must set the 8390 for word mode. */
189 z_writeb(0x49, ioaddr + NE_EN0_DCFG);
190 start_page = NESM_START_PG;
191 stop_page = NESM_STOP_PG;
193 dev->base_addr = ioaddr;
194 dev->irq = IRQ_AMIGA_PORTS;
196 /* Install the Interrupt handler */
197 i = request_irq(IRQ_AMIGA_PORTS, ei_interrupt, SA_SHIRQ, dev->name, dev);
200 /* Allocate dev->priv and fill in 8390 specific dev fields. */
201 if (ethdev_init(dev)) {
202 printk("Unable to get memory for dev->priv.\n");
206 for(i = 0; i < ETHER_ADDR_LEN; i++) {
208 printk(" %2.2x", SA_prom[i]);
210 dev->dev_addr[i] = SA_prom[i];
213 printk("%s: %s at 0x%08lx, Ethernet Address "
214 "%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, name, board,
215 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
216 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
218 ei_status.name = name;
219 ei_status.tx_start_page = start_page;
220 ei_status.stop_page = stop_page;
221 ei_status.word16 = 1;
223 ei_status.rx_start_page = start_page + TX_PAGES;
225 ei_status.reset_8390 = &ariadne2_reset_8390;
226 ei_status.block_input = &ariadne2_block_input;
227 ei_status.block_output = &ariadne2_block_output;
228 ei_status.get_8390_hdr = &ariadne2_get_8390_hdr;
229 ei_status.reg_offset = ariadne2_offsets;
230 dev->open = &ariadne2_open;
231 dev->stop = &ariadne2_close;
233 ei_status.priv = (unsigned long)root_ariadne2_dev;
234 root_ariadne2_dev = dev;
240 static int ariadne2_open(struct net_device *dev)
246 static int ariadne2_close(struct net_device *dev)
249 printk("%s: Shutting down ethercard.\n", dev->name);
254 /* Hard reset the card. This used to pause for the same period that a
255 8390 reset command required, but that shouldn't be necessary. */
256 static void ariadne2_reset_8390(struct net_device *dev)
258 unsigned long reset_start_time = jiffies;
261 printk("resetting the 8390 t=%ld...", jiffies);
263 z_writeb(z_readb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
266 ei_status.dmaing = 0;
268 /* This check _should_not_ be necessary, omit eventually. */
269 while ((z_readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
270 if (jiffies - reset_start_time > 2*HZ/100) {
271 printk("%s: ne_reset_8390() did not complete.\n", dev->name);
274 z_writeb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr. */
277 /* Grab the 8390 specific header. Similar to the block_input routine, but
278 we don't need to be concerned with ring wrap as the header will be at
279 the start of a page, so we optimize accordingly. */
281 static void ariadne2_get_8390_hdr(struct net_device *dev,
282 struct e8390_pkt_hdr *hdr, int ring_page)
284 int nic_base = dev->base_addr;
288 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
289 if (ei_status.dmaing) {
290 printk("%s: DMAing conflict in ne_get_8390_hdr "
291 "[DMAstat:%d][irqlock:%d].\n", dev->name, ei_status.dmaing,
296 ei_status.dmaing |= 0x01;
297 z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
298 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
299 z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
300 z_writeb(0, nic_base + NE_EN0_RCNTHI);
301 z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
302 z_writeb(ring_page, nic_base + NE_EN0_RSARHI);
303 z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
306 for (cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
307 *ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
309 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
311 hdr->count = WORDSWAP(hdr->count);
313 ei_status.dmaing &= ~0x01;
316 /* Block input and output, similar to the Crynwr packet driver. If you
317 are porting to a new ethercard, look at the packet driver source for hints.
318 The NEx000 doesn't share the on-board packet memory -- you have to put
319 the packet out through the "remote DMA" dataport using z_writeb. */
321 static void ariadne2_block_input(struct net_device *dev, int count,
322 struct sk_buff *skb, int ring_offset)
324 int nic_base = dev->base_addr;
325 char *buf = skb->data;
329 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
330 if (ei_status.dmaing) {
331 printk("%s: DMAing conflict in ne_block_input "
332 "[DMAstat:%d][irqlock:%d].\n",
333 dev->name, ei_status.dmaing, ei_status.irqlock);
336 ei_status.dmaing |= 0x01;
337 z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
338 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
339 z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
340 z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
341 z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
342 z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
343 z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
345 for (cnt = 0; cnt < (count>>1); cnt++)
346 *ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
348 buf[count-1] = z_readb(NE_BASE + NE_DATAPORT);
350 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
351 ei_status.dmaing &= ~0x01;
354 static void ariadne2_block_output(struct net_device *dev, int count,
355 const unsigned char *buf,
356 const int start_page)
358 int nic_base = NE_BASE;
359 unsigned long dma_start;
363 /* Round the count up for word writes. Do we need to do this?
364 What effect will an odd byte count have on the 8390?
365 I should check someday. */
369 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
370 if (ei_status.dmaing) {
371 printk("%s: DMAing conflict in ne_block_output."
372 "[DMAstat:%d][irqlock:%d]\n", dev->name, ei_status.dmaing,
376 ei_status.dmaing |= 0x01;
377 /* We should already be in page 0, but to be safe... */
378 z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
380 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
382 /* Now the normal output. */
383 z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
384 z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
385 z_writeb(0x00, nic_base + NE_EN0_RSARLO);
386 z_writeb(start_page, nic_base + NE_EN0_RSARHI);
388 z_writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
390 for (cnt = 0; cnt < count>>1; cnt++)
391 z_writew(*ptrs++, NE_BASE+NE_DATAPORT);
395 while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
396 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
397 printk("%s: timeout waiting for Tx RDC.\n", dev->name);
398 ariadne2_reset_8390(dev);
403 z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
404 ei_status.dmaing &= ~0x01;
408 static void __exit ariadne2_cleanup(void)
411 struct net_device *dev, *next;
413 while ((dev = root_ariadne2_dev)) {
414 next = (struct net_device *)(ei_status.priv);
415 unregister_netdev(dev);
416 free_irq(IRQ_AMIGA_PORTS, dev);
417 release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT*2);
419 root_ariadne2_dev = next;
424 module_init(ariadne2_probe);
425 module_exit(ariadne2_cleanup);
427 MODULE_LICENSE("GPL");