Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Amiga Linux/68k A2065 Ethernet Driver | |
3 | * | |
4 | * (C) Copyright 1995-2003 by Geert Uytterhoeven <geert@linux-m68k.org> | |
5 | * | |
6 | * Fixes and tips by: | |
7 | * - Janos Farkas (CHEXUM@sparta.banki.hu) | |
8 | * - Jes Degn Soerensen (jds@kom.auc.dk) | |
9 | * - Matt Domsch (Matt_Domsch@dell.com) | |
10 | * | |
11 | * ---------------------------------------------------------------------------- | |
12 | * | |
13 | * This program is based on | |
14 | * | |
15 | * ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver | |
16 | * (C) Copyright 1995 by Geert Uytterhoeven, | |
17 | * Peter De Schrijver | |
18 | * | |
19 | * lance.c: An AMD LANCE ethernet driver for linux. | |
20 | * Written 1993-94 by Donald Becker. | |
21 | * | |
22 | * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller | |
23 | * Advanced Micro Devices | |
24 | * Publication #16907, Rev. B, Amendment/0, May 1994 | |
25 | * | |
26 | * ---------------------------------------------------------------------------- | |
27 | * | |
28 | * This file is subject to the terms and conditions of the GNU General Public | |
29 | * License. See the file COPYING in the main directory of the Linux | |
30 | * distribution for more details. | |
31 | * | |
32 | * ---------------------------------------------------------------------------- | |
33 | * | |
34 | * The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains: | |
35 | * | |
36 | * - an Am7990 Local Area Network Controller for Ethernet (LANCE) with | |
37 | * both 10BASE-2 (thin coax) and AUI (DB-15) connectors | |
38 | */ | |
39 | ||
747e252f JP |
40 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
41 | ||
42 | /*#define DEBUG*/ | |
43 | /*#define TEST_HITS*/ | |
44 | ||
1da177e4 LT |
45 | #include <linux/errno.h> |
46 | #include <linux/netdevice.h> | |
47 | #include <linux/etherdevice.h> | |
48 | #include <linux/module.h> | |
49 | #include <linux/stddef.h> | |
50 | #include <linux/kernel.h> | |
51 | #include <linux/interrupt.h> | |
52 | #include <linux/ioport.h> | |
53 | #include <linux/skbuff.h> | |
1da177e4 | 54 | #include <linux/string.h> |
1da177e4 LT |
55 | #include <linux/init.h> |
56 | #include <linux/crc32.h> | |
57 | #include <linux/zorro.h> | |
58 | #include <linux/bitops.h> | |
59 | ||
60 | #include <asm/irq.h> | |
61 | #include <asm/amigaints.h> | |
62 | #include <asm/amigahw.h> | |
63 | ||
64 | #include "a2065.h" | |
65 | ||
747e252f | 66 | /* Transmit/Receive Ring Definitions */ |
1da177e4 LT |
67 | |
68 | #define LANCE_LOG_TX_BUFFERS (2) | |
69 | #define LANCE_LOG_RX_BUFFERS (4) | |
70 | ||
747e252f JP |
71 | #define TX_RING_SIZE (1 << LANCE_LOG_TX_BUFFERS) |
72 | #define RX_RING_SIZE (1 << LANCE_LOG_RX_BUFFERS) | |
1da177e4 | 73 | |
747e252f JP |
74 | #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) |
75 | #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) | |
1da177e4 LT |
76 | |
77 | #define PKT_BUF_SIZE (1544) | |
78 | #define RX_BUFF_SIZE PKT_BUF_SIZE | |
79 | #define TX_BUFF_SIZE PKT_BUF_SIZE | |
80 | ||
747e252f | 81 | /* Layout of the Lance's RAM Buffer */ |
1da177e4 LT |
82 | |
83 | struct lance_init_block { | |
84 | unsigned short mode; /* Pre-set mode (reg. 15) */ | |
85 | unsigned char phys_addr[6]; /* Physical ethernet address */ | |
86 | unsigned filter[2]; /* Multicast filter. */ | |
87 | ||
88 | /* Receive and transmit ring base, along with extra bits. */ | |
89 | unsigned short rx_ptr; /* receive descriptor addr */ | |
90 | unsigned short rx_len; /* receive len and high addr */ | |
91 | unsigned short tx_ptr; /* transmit descriptor addr */ | |
92 | unsigned short tx_len; /* transmit len and high addr */ | |
6aa20a22 | 93 | |
1da177e4 LT |
94 | /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ |
95 | struct lance_rx_desc brx_ring[RX_RING_SIZE]; | |
96 | struct lance_tx_desc btx_ring[TX_RING_SIZE]; | |
97 | ||
747e252f JP |
98 | char rx_buf[RX_RING_SIZE][RX_BUFF_SIZE]; |
99 | char tx_buf[TX_RING_SIZE][TX_BUFF_SIZE]; | |
1da177e4 LT |
100 | }; |
101 | ||
747e252f | 102 | /* Private Device Data */ |
1da177e4 LT |
103 | |
104 | struct lance_private { | |
105 | char *name; | |
106 | volatile struct lance_regs *ll; | |
107 | volatile struct lance_init_block *init_block; /* Hosts view */ | |
108 | volatile struct lance_init_block *lance_init_block; /* Lance view */ | |
109 | ||
110 | int rx_new, tx_new; | |
111 | int rx_old, tx_old; | |
6aa20a22 | 112 | |
1da177e4 LT |
113 | int lance_log_rx_bufs, lance_log_tx_bufs; |
114 | int rx_ring_mod_mask, tx_ring_mod_mask; | |
115 | ||
1da177e4 LT |
116 | int tpe; /* cable-selection is TPE */ |
117 | int auto_select; /* cable-selection by carrier */ | |
118 | unsigned short busmaster_regval; | |
119 | ||
120 | #ifdef CONFIG_SUNLANCE | |
121 | struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */ | |
122 | int burst_sizes; /* ledma SBus burst sizes */ | |
123 | #endif | |
124 | struct timer_list multicast_timer; | |
125 | }; | |
126 | ||
1da177e4 LT |
127 | #define LANCE_ADDR(x) ((int)(x) & ~0xff000000) |
128 | ||
129 | /* Load the CSR registers */ | |
747e252f | 130 | static void load_csrs(struct lance_private *lp) |
1da177e4 LT |
131 | { |
132 | volatile struct lance_regs *ll = lp->ll; | |
133 | volatile struct lance_init_block *aib = lp->lance_init_block; | |
747e252f | 134 | int leptr = LANCE_ADDR(aib); |
1da177e4 LT |
135 | |
136 | ll->rap = LE_CSR1; | |
137 | ll->rdp = (leptr & 0xFFFF); | |
138 | ll->rap = LE_CSR2; | |
139 | ll->rdp = leptr >> 16; | |
140 | ll->rap = LE_CSR3; | |
141 | ll->rdp = lp->busmaster_regval; | |
142 | ||
143 | /* Point back to csr0 */ | |
144 | ll->rap = LE_CSR0; | |
145 | } | |
146 | ||
1da177e4 | 147 | /* Setup the Lance Rx and Tx rings */ |
747e252f | 148 | static void lance_init_ring(struct net_device *dev) |
1da177e4 LT |
149 | { |
150 | struct lance_private *lp = netdev_priv(dev); | |
151 | volatile struct lance_init_block *ib = lp->init_block; | |
747e252f JP |
152 | volatile struct lance_init_block *aib = lp->lance_init_block; |
153 | /* for LANCE_ADDR computations */ | |
1da177e4 LT |
154 | int leptr; |
155 | int i; | |
156 | ||
1da177e4 LT |
157 | /* Lock out other processes while setting up hardware */ |
158 | netif_stop_queue(dev); | |
159 | lp->rx_new = lp->tx_new = 0; | |
160 | lp->rx_old = lp->tx_old = 0; | |
161 | ||
162 | ib->mode = 0; | |
163 | ||
164 | /* Copy the ethernet address to the lance init block | |
165 | * Note that on the sparc you need to swap the ethernet address. | |
166 | */ | |
747e252f JP |
167 | ib->phys_addr[0] = dev->dev_addr[1]; |
168 | ib->phys_addr[1] = dev->dev_addr[0]; | |
169 | ib->phys_addr[2] = dev->dev_addr[3]; | |
170 | ib->phys_addr[3] = dev->dev_addr[2]; | |
171 | ib->phys_addr[4] = dev->dev_addr[5]; | |
172 | ib->phys_addr[5] = dev->dev_addr[4]; | |
6aa20a22 | 173 | |
1da177e4 | 174 | /* Setup the Tx ring entries */ |
747e252f JP |
175 | netdev_dbg(dev, "TX rings:\n"); |
176 | for (i = 0; i <= 1 << lp->lance_log_tx_bufs; i++) { | |
1da177e4 | 177 | leptr = LANCE_ADDR(&aib->tx_buf[i][0]); |
747e252f JP |
178 | ib->btx_ring[i].tmd0 = leptr; |
179 | ib->btx_ring[i].tmd1_hadr = leptr >> 16; | |
180 | ib->btx_ring[i].tmd1_bits = 0; | |
181 | ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */ | |
182 | ib->btx_ring[i].misc = 0; | |
183 | if (i < 3) | |
184 | netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); | |
1da177e4 LT |
185 | } |
186 | ||
187 | /* Setup the Rx ring entries */ | |
747e252f JP |
188 | netdev_dbg(dev, "RX rings:\n"); |
189 | for (i = 0; i < 1 << lp->lance_log_rx_bufs; i++) { | |
1da177e4 LT |
190 | leptr = LANCE_ADDR(&aib->rx_buf[i][0]); |
191 | ||
747e252f JP |
192 | ib->brx_ring[i].rmd0 = leptr; |
193 | ib->brx_ring[i].rmd1_hadr = leptr >> 16; | |
194 | ib->brx_ring[i].rmd1_bits = LE_R1_OWN; | |
195 | ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000; | |
196 | ib->brx_ring[i].mblength = 0; | |
197 | if (i < 3) | |
198 | netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); | |
1da177e4 LT |
199 | } |
200 | ||
201 | /* Setup the initialization block */ | |
6aa20a22 | 202 | |
1da177e4 LT |
203 | /* Setup rx descriptor pointer */ |
204 | leptr = LANCE_ADDR(&aib->brx_ring); | |
205 | ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16); | |
206 | ib->rx_ptr = leptr; | |
747e252f | 207 | netdev_dbg(dev, "RX ptr: %08x\n", leptr); |
6aa20a22 | 208 | |
1da177e4 LT |
209 | /* Setup tx descriptor pointer */ |
210 | leptr = LANCE_ADDR(&aib->btx_ring); | |
211 | ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16); | |
212 | ib->tx_ptr = leptr; | |
747e252f | 213 | netdev_dbg(dev, "TX ptr: %08x\n", leptr); |
1da177e4 LT |
214 | |
215 | /* Clear the multicast filter */ | |
747e252f JP |
216 | ib->filter[0] = 0; |
217 | ib->filter[1] = 0; | |
1da177e4 LT |
218 | } |
219 | ||
747e252f | 220 | static int init_restart_lance(struct lance_private *lp) |
1da177e4 LT |
221 | { |
222 | volatile struct lance_regs *ll = lp->ll; | |
223 | int i; | |
224 | ||
225 | ll->rap = LE_CSR0; | |
226 | ll->rdp = LE_C0_INIT; | |
227 | ||
228 | /* Wait for the lance to complete initialization */ | |
229 | for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++) | |
230 | barrier(); | |
231 | if ((i == 100) || (ll->rdp & LE_C0_ERR)) { | |
747e252f | 232 | pr_err("unopened after %d ticks, csr0=%04x\n", i, ll->rdp); |
1da177e4 LT |
233 | return -EIO; |
234 | } | |
235 | ||
236 | /* Clear IDON by writing a "1", enable interrupts and start lance */ | |
237 | ll->rdp = LE_C0_IDON; | |
238 | ll->rdp = LE_C0_INEA | LE_C0_STRT; | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
747e252f | 243 | static int lance_rx(struct net_device *dev) |
1da177e4 LT |
244 | { |
245 | struct lance_private *lp = netdev_priv(dev); | |
246 | volatile struct lance_init_block *ib = lp->init_block; | |
247 | volatile struct lance_regs *ll = lp->ll; | |
248 | volatile struct lance_rx_desc *rd; | |
249 | unsigned char bits; | |
1da177e4 LT |
250 | |
251 | #ifdef TEST_HITS | |
252 | int i; | |
747e252f JP |
253 | char buf[RX_RING_SIZE + 1]; |
254 | ||
1da177e4 | 255 | for (i = 0; i < RX_RING_SIZE; i++) { |
747e252f | 256 | char r1_own = ib->brx_ring[i].rmd1_bits & LE_R1_OWN; |
1da177e4 | 257 | if (i == lp->rx_new) |
747e252f | 258 | buf[i] = r1_own ? '_' : 'X'; |
1da177e4 | 259 | else |
747e252f | 260 | buf[i] = r1_own ? '.' : '1'; |
1da177e4 | 261 | } |
747e252f JP |
262 | buf[RX_RING_SIZE] = 0; |
263 | ||
264 | pr_debug("RxRing TestHits: [%s]\n", buf); | |
1da177e4 | 265 | #endif |
6aa20a22 | 266 | |
747e252f JP |
267 | ll->rdp = LE_C0_RINT | LE_C0_INEA; |
268 | for (rd = &ib->brx_ring[lp->rx_new]; | |
1da177e4 | 269 | !((bits = rd->rmd1_bits) & LE_R1_OWN); |
747e252f | 270 | rd = &ib->brx_ring[lp->rx_new]) { |
1da177e4 LT |
271 | |
272 | /* We got an incomplete frame? */ | |
273 | if ((bits & LE_R1_POK) != LE_R1_POK) { | |
09f75cd7 JG |
274 | dev->stats.rx_over_errors++; |
275 | dev->stats.rx_errors++; | |
1da177e4 LT |
276 | continue; |
277 | } else if (bits & LE_R1_ERR) { | |
278 | /* Count only the end frame as a rx error, | |
279 | * not the beginning | |
280 | */ | |
747e252f JP |
281 | if (bits & LE_R1_BUF) |
282 | dev->stats.rx_fifo_errors++; | |
283 | if (bits & LE_R1_CRC) | |
284 | dev->stats.rx_crc_errors++; | |
285 | if (bits & LE_R1_OFL) | |
286 | dev->stats.rx_over_errors++; | |
287 | if (bits & LE_R1_FRA) | |
288 | dev->stats.rx_frame_errors++; | |
289 | if (bits & LE_R1_EOP) | |
290 | dev->stats.rx_errors++; | |
1da177e4 | 291 | } else { |
79ea13ce | 292 | int len = (rd->mblength & 0xfff) - 4; |
747e252f | 293 | struct sk_buff *skb = dev_alloc_skb(len + 2); |
1da177e4 | 294 | |
79ea13ce | 295 | if (!skb) { |
747e252f | 296 | netdev_warn(dev, "Memory squeeze, deferring packet\n"); |
09f75cd7 | 297 | dev->stats.rx_dropped++; |
1da177e4 LT |
298 | rd->mblength = 0; |
299 | rd->rmd1_bits = LE_R1_OWN; | |
300 | lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; | |
301 | return 0; | |
302 | } | |
6aa20a22 | 303 | |
747e252f JP |
304 | skb_reserve(skb, 2); /* 16 byte align */ |
305 | skb_put(skb, len); /* make room */ | |
8c7b7faa | 306 | skb_copy_to_linear_data(skb, |
747e252f JP |
307 | (unsigned char *)&ib->rx_buf[lp->rx_new][0], |
308 | len); | |
309 | skb->protocol = eth_type_trans(skb, dev); | |
310 | netif_rx(skb); | |
09f75cd7 JG |
311 | dev->stats.rx_packets++; |
312 | dev->stats.rx_bytes += len; | |
1da177e4 LT |
313 | } |
314 | ||
315 | /* Return the packet to the pool */ | |
316 | rd->mblength = 0; | |
317 | rd->rmd1_bits = LE_R1_OWN; | |
318 | lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; | |
319 | } | |
320 | return 0; | |
321 | } | |
322 | ||
747e252f | 323 | static int lance_tx(struct net_device *dev) |
1da177e4 LT |
324 | { |
325 | struct lance_private *lp = netdev_priv(dev); | |
326 | volatile struct lance_init_block *ib = lp->init_block; | |
327 | volatile struct lance_regs *ll = lp->ll; | |
328 | volatile struct lance_tx_desc *td; | |
329 | int i, j; | |
330 | int status; | |
331 | ||
332 | /* csr0 is 2f3 */ | |
333 | ll->rdp = LE_C0_TINT | LE_C0_INEA; | |
334 | /* csr0 is 73 */ | |
335 | ||
336 | j = lp->tx_old; | |
337 | for (i = j; i != lp->tx_new; i = j) { | |
747e252f | 338 | td = &ib->btx_ring[i]; |
1da177e4 LT |
339 | |
340 | /* If we hit a packet not owned by us, stop */ | |
341 | if (td->tmd1_bits & LE_T1_OWN) | |
342 | break; | |
6aa20a22 | 343 | |
1da177e4 LT |
344 | if (td->tmd1_bits & LE_T1_ERR) { |
345 | status = td->misc; | |
6aa20a22 | 346 | |
09f75cd7 | 347 | dev->stats.tx_errors++; |
747e252f JP |
348 | if (status & LE_T3_RTY) |
349 | dev->stats.tx_aborted_errors++; | |
350 | if (status & LE_T3_LCOL) | |
351 | dev->stats.tx_window_errors++; | |
1da177e4 LT |
352 | |
353 | if (status & LE_T3_CLOS) { | |
09f75cd7 | 354 | dev->stats.tx_carrier_errors++; |
1da177e4 LT |
355 | if (lp->auto_select) { |
356 | lp->tpe = 1 - lp->tpe; | |
747e252f JP |
357 | netdev_err(dev, "Carrier Lost, trying %s\n", |
358 | lp->tpe ? "TPE" : "AUI"); | |
1da177e4 LT |
359 | /* Stop the lance */ |
360 | ll->rap = LE_CSR0; | |
361 | ll->rdp = LE_C0_STOP; | |
747e252f JP |
362 | lance_init_ring(dev); |
363 | load_csrs(lp); | |
364 | init_restart_lance(lp); | |
1da177e4 LT |
365 | return 0; |
366 | } | |
367 | } | |
368 | ||
747e252f JP |
369 | /* buffer errors and underflows turn off |
370 | * the transmitter, so restart the adapter | |
371 | */ | |
372 | if (status & (LE_T3_BUF | LE_T3_UFL)) { | |
09f75cd7 | 373 | dev->stats.tx_fifo_errors++; |
1da177e4 | 374 | |
747e252f | 375 | netdev_err(dev, "Tx: ERR_BUF|ERR_UFL, restarting\n"); |
1da177e4 LT |
376 | /* Stop the lance */ |
377 | ll->rap = LE_CSR0; | |
378 | ll->rdp = LE_C0_STOP; | |
747e252f JP |
379 | lance_init_ring(dev); |
380 | load_csrs(lp); | |
381 | init_restart_lance(lp); | |
1da177e4 LT |
382 | return 0; |
383 | } | |
384 | } else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { | |
747e252f | 385 | /* So we don't count the packet more than once. */ |
1da177e4 LT |
386 | td->tmd1_bits &= ~(LE_T1_POK); |
387 | ||
388 | /* One collision before packet was sent. */ | |
389 | if (td->tmd1_bits & LE_T1_EONE) | |
09f75cd7 | 390 | dev->stats.collisions++; |
1da177e4 LT |
391 | |
392 | /* More than one collision, be optimistic. */ | |
393 | if (td->tmd1_bits & LE_T1_EMORE) | |
09f75cd7 | 394 | dev->stats.collisions += 2; |
1da177e4 | 395 | |
09f75cd7 | 396 | dev->stats.tx_packets++; |
1da177e4 | 397 | } |
6aa20a22 | 398 | |
1da177e4 LT |
399 | j = (j + 1) & lp->tx_ring_mod_mask; |
400 | } | |
401 | lp->tx_old = j; | |
402 | ll->rdp = LE_C0_TINT | LE_C0_INEA; | |
403 | return 0; | |
404 | } | |
405 | ||
747e252f JP |
406 | static int lance_tx_buffs_avail(struct lance_private *lp) |
407 | { | |
408 | if (lp->tx_old <= lp->tx_new) | |
409 | return lp->tx_old + lp->tx_ring_mod_mask - lp->tx_new; | |
410 | return lp->tx_old - lp->tx_new - 1; | |
411 | } | |
412 | ||
413 | static irqreturn_t lance_interrupt(int irq, void *dev_id) | |
1da177e4 | 414 | { |
43d620c8 JP |
415 | struct net_device *dev = dev_id; |
416 | struct lance_private *lp = netdev_priv(dev); | |
417 | volatile struct lance_regs *ll = lp->ll; | |
1da177e4 LT |
418 | int csr0; |
419 | ||
1da177e4 LT |
420 | ll->rap = LE_CSR0; /* LANCE Controller Status */ |
421 | csr0 = ll->rdp; | |
422 | ||
423 | if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */ | |
424 | return IRQ_NONE; /* been generated by the Lance. */ | |
425 | ||
426 | /* Acknowledge all the interrupt sources ASAP */ | |
747e252f | 427 | ll->rdp = csr0 & ~(LE_C0_INEA | LE_C0_TDMD | LE_C0_STOP | LE_C0_STRT | |
1da177e4 LT |
428 | LE_C0_INIT); |
429 | ||
747e252f | 430 | if (csr0 & LE_C0_ERR) { |
1da177e4 | 431 | /* Clear the error condition */ |
747e252f | 432 | ll->rdp = LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | LE_C0_INEA; |
1da177e4 | 433 | } |
6aa20a22 | 434 | |
1da177e4 | 435 | if (csr0 & LE_C0_RINT) |
747e252f | 436 | lance_rx(dev); |
1da177e4 LT |
437 | |
438 | if (csr0 & LE_C0_TINT) | |
747e252f | 439 | lance_tx(dev); |
1da177e4 LT |
440 | |
441 | /* Log misc errors. */ | |
442 | if (csr0 & LE_C0_BABL) | |
09f75cd7 | 443 | dev->stats.tx_errors++; /* Tx babble. */ |
1da177e4 | 444 | if (csr0 & LE_C0_MISS) |
09f75cd7 | 445 | dev->stats.rx_errors++; /* Missed a Rx frame. */ |
1da177e4 | 446 | if (csr0 & LE_C0_MERR) { |
747e252f JP |
447 | netdev_err(dev, "Bus master arbitration failure, status %04x\n", |
448 | csr0); | |
1da177e4 LT |
449 | /* Restart the chip. */ |
450 | ll->rdp = LE_C0_STRT; | |
451 | } | |
452 | ||
747e252f | 453 | if (netif_queue_stopped(dev) && lance_tx_buffs_avail(lp) > 0) |
1da177e4 LT |
454 | netif_wake_queue(dev); |
455 | ||
456 | ll->rap = LE_CSR0; | |
747e252f JP |
457 | ll->rdp = (LE_C0_BABL | LE_C0_CERR | LE_C0_MISS | LE_C0_MERR | |
458 | LE_C0_IDON | LE_C0_INEA); | |
1da177e4 LT |
459 | return IRQ_HANDLED; |
460 | } | |
461 | ||
747e252f | 462 | static int lance_open(struct net_device *dev) |
1da177e4 LT |
463 | { |
464 | struct lance_private *lp = netdev_priv(dev); | |
465 | volatile struct lance_regs *ll = lp->ll; | |
466 | int ret; | |
467 | ||
1da177e4 LT |
468 | /* Stop the Lance */ |
469 | ll->rap = LE_CSR0; | |
470 | ll->rdp = LE_C0_STOP; | |
471 | ||
472 | /* Install the Interrupt handler */ | |
1fb9df5d | 473 | ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED, |
1da177e4 | 474 | dev->name, dev); |
747e252f JP |
475 | if (ret) |
476 | return ret; | |
1da177e4 | 477 | |
747e252f JP |
478 | load_csrs(lp); |
479 | lance_init_ring(dev); | |
1da177e4 LT |
480 | |
481 | netif_start_queue(dev); | |
482 | ||
747e252f | 483 | return init_restart_lance(lp); |
1da177e4 LT |
484 | } |
485 | ||
747e252f | 486 | static int lance_close(struct net_device *dev) |
1da177e4 LT |
487 | { |
488 | struct lance_private *lp = netdev_priv(dev); | |
489 | volatile struct lance_regs *ll = lp->ll; | |
490 | ||
491 | netif_stop_queue(dev); | |
492 | del_timer_sync(&lp->multicast_timer); | |
493 | ||
494 | /* Stop the card */ | |
495 | ll->rap = LE_CSR0; | |
496 | ll->rdp = LE_C0_STOP; | |
497 | ||
498 | free_irq(IRQ_AMIGA_PORTS, dev); | |
499 | return 0; | |
500 | } | |
501 | ||
747e252f | 502 | static inline int lance_reset(struct net_device *dev) |
1da177e4 LT |
503 | { |
504 | struct lance_private *lp = netdev_priv(dev); | |
505 | volatile struct lance_regs *ll = lp->ll; | |
506 | int status; | |
6aa20a22 | 507 | |
1da177e4 LT |
508 | /* Stop the lance */ |
509 | ll->rap = LE_CSR0; | |
510 | ll->rdp = LE_C0_STOP; | |
511 | ||
747e252f | 512 | load_csrs(lp); |
1da177e4 | 513 | |
747e252f | 514 | lance_init_ring(dev); |
1ae5dc34 | 515 | dev->trans_start = jiffies; /* prevent tx timeout */ |
1da177e4 LT |
516 | netif_start_queue(dev); |
517 | ||
747e252f JP |
518 | status = init_restart_lance(lp); |
519 | netdev_dbg(dev, "Lance restart=%d\n", status); | |
520 | ||
1da177e4 LT |
521 | return status; |
522 | } | |
523 | ||
524 | static void lance_tx_timeout(struct net_device *dev) | |
525 | { | |
526 | struct lance_private *lp = netdev_priv(dev); | |
527 | volatile struct lance_regs *ll = lp->ll; | |
528 | ||
747e252f | 529 | netdev_err(dev, "transmit timed out, status %04x, reset\n", ll->rdp); |
1da177e4 LT |
530 | lance_reset(dev); |
531 | netif_wake_queue(dev); | |
532 | } | |
533 | ||
747e252f JP |
534 | static netdev_tx_t lance_start_xmit(struct sk_buff *skb, |
535 | struct net_device *dev) | |
1da177e4 LT |
536 | { |
537 | struct lance_private *lp = netdev_priv(dev); | |
538 | volatile struct lance_regs *ll = lp->ll; | |
539 | volatile struct lance_init_block *ib = lp->init_block; | |
cedc1dba | 540 | int entry, skblen; |
ec634fe3 | 541 | int status = NETDEV_TX_OK; |
1da177e4 LT |
542 | unsigned long flags; |
543 | ||
cedc1dba | 544 | if (skb_padto(skb, ETH_ZLEN)) |
ec634fe3 | 545 | return NETDEV_TX_OK; |
cedc1dba | 546 | skblen = max_t(unsigned, skb->len, ETH_ZLEN); |
1da177e4 LT |
547 | |
548 | local_irq_save(flags); | |
549 | ||
747e252f | 550 | if (!lance_tx_buffs_avail(lp)) { |
1da177e4 | 551 | local_irq_restore(flags); |
5b548140 | 552 | return NETDEV_TX_LOCKED; |
1da177e4 LT |
553 | } |
554 | ||
747e252f | 555 | #ifdef DEBUG |
1da177e4 | 556 | /* dump the packet */ |
ad361c98 JP |
557 | print_hex_dump(KERN_DEBUG, "skb->data: ", DUMP_PREFIX_NONE, |
558 | 16, 1, skb->data, 64, true); | |
1da177e4 LT |
559 | #endif |
560 | entry = lp->tx_new & lp->tx_ring_mod_mask; | |
747e252f JP |
561 | ib->btx_ring[entry].length = (-skblen) | 0xf000; |
562 | ib->btx_ring[entry].misc = 0; | |
6aa20a22 | 563 | |
747e252f | 564 | skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); |
1da177e4 | 565 | |
1da177e4 | 566 | /* Now, give the packet to the lance */ |
747e252f | 567 | ib->btx_ring[entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); |
1da177e4 | 568 | lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask; |
09f75cd7 | 569 | dev->stats.tx_bytes += skblen; |
1da177e4 | 570 | |
747e252f | 571 | if (lance_tx_buffs_avail(lp) <= 0) |
1da177e4 LT |
572 | netif_stop_queue(dev); |
573 | ||
574 | /* Kick the lance: transmit now */ | |
575 | ll->rdp = LE_C0_INEA | LE_C0_TDMD; | |
747e252f | 576 | dev_kfree_skb(skb); |
6aa20a22 | 577 | |
1da177e4 LT |
578 | local_irq_restore(flags); |
579 | ||
580 | return status; | |
581 | } | |
582 | ||
1da177e4 | 583 | /* taken from the depca driver */ |
747e252f | 584 | static void lance_load_multicast(struct net_device *dev) |
1da177e4 LT |
585 | { |
586 | struct lance_private *lp = netdev_priv(dev); | |
587 | volatile struct lance_init_block *ib = lp->init_block; | |
588 | volatile u16 *mcast_table = (u16 *)&ib->filter; | |
22bedad3 | 589 | struct netdev_hw_addr *ha; |
1da177e4 | 590 | u32 crc; |
6aa20a22 | 591 | |
1da177e4 | 592 | /* set all multicast bits */ |
747e252f JP |
593 | if (dev->flags & IFF_ALLMULTI) { |
594 | ib->filter[0] = 0xffffffff; | |
595 | ib->filter[1] = 0xffffffff; | |
1da177e4 LT |
596 | return; |
597 | } | |
598 | /* clear the multicast filter */ | |
747e252f JP |
599 | ib->filter[0] = 0; |
600 | ib->filter[1] = 0; | |
1da177e4 LT |
601 | |
602 | /* Add addresses */ | |
22bedad3 | 603 | netdev_for_each_mc_addr(ha, dev) { |
498d8e23 | 604 | crc = ether_crc_le(6, ha->addr); |
1da177e4 | 605 | crc = crc >> 26; |
747e252f | 606 | mcast_table[crc >> 4] |= 1 << (crc & 0xf); |
1da177e4 | 607 | } |
1da177e4 LT |
608 | } |
609 | ||
747e252f | 610 | static void lance_set_multicast(struct net_device *dev) |
1da177e4 LT |
611 | { |
612 | struct lance_private *lp = netdev_priv(dev); | |
613 | volatile struct lance_init_block *ib = lp->init_block; | |
614 | volatile struct lance_regs *ll = lp->ll; | |
615 | ||
616 | if (!netif_running(dev)) | |
617 | return; | |
618 | ||
619 | if (lp->tx_old != lp->tx_new) { | |
620 | mod_timer(&lp->multicast_timer, jiffies + 4); | |
621 | netif_wake_queue(dev); | |
622 | return; | |
623 | } | |
624 | ||
625 | netif_stop_queue(dev); | |
626 | ||
627 | ll->rap = LE_CSR0; | |
628 | ll->rdp = LE_C0_STOP; | |
747e252f | 629 | lance_init_ring(dev); |
1da177e4 LT |
630 | |
631 | if (dev->flags & IFF_PROMISC) { | |
632 | ib->mode |= LE_MO_PROM; | |
633 | } else { | |
634 | ib->mode &= ~LE_MO_PROM; | |
747e252f | 635 | lance_load_multicast(dev); |
1da177e4 | 636 | } |
747e252f JP |
637 | load_csrs(lp); |
638 | init_restart_lance(lp); | |
1da177e4 LT |
639 | netif_wake_queue(dev); |
640 | } | |
641 | ||
642 | static int __devinit a2065_init_one(struct zorro_dev *z, | |
643 | const struct zorro_device_id *ent); | |
644 | static void __devexit a2065_remove_one(struct zorro_dev *z); | |
645 | ||
646 | ||
647 | static struct zorro_device_id a2065_zorro_tbl[] __devinitdata = { | |
648 | { ZORRO_PROD_CBM_A2065_1 }, | |
649 | { ZORRO_PROD_CBM_A2065_2 }, | |
650 | { ZORRO_PROD_AMERISTAR_A2065 }, | |
651 | { 0 } | |
652 | }; | |
bf54a2b3 | 653 | MODULE_DEVICE_TABLE(zorro, a2065_zorro_tbl); |
1da177e4 LT |
654 | |
655 | static struct zorro_driver a2065_driver = { | |
656 | .name = "a2065", | |
657 | .id_table = a2065_zorro_tbl, | |
658 | .probe = a2065_init_one, | |
659 | .remove = __devexit_p(a2065_remove_one), | |
660 | }; | |
661 | ||
444f1a92 AB |
662 | static const struct net_device_ops lance_netdev_ops = { |
663 | .ndo_open = lance_open, | |
664 | .ndo_stop = lance_close, | |
665 | .ndo_start_xmit = lance_start_xmit, | |
666 | .ndo_tx_timeout = lance_tx_timeout, | |
667 | .ndo_set_multicast_list = lance_set_multicast, | |
668 | .ndo_validate_addr = eth_validate_addr, | |
669 | .ndo_change_mtu = eth_change_mtu, | |
670 | .ndo_set_mac_address = eth_mac_addr, | |
671 | }; | |
672 | ||
1da177e4 LT |
673 | static int __devinit a2065_init_one(struct zorro_dev *z, |
674 | const struct zorro_device_id *ent) | |
675 | { | |
676 | struct net_device *dev; | |
677 | struct lance_private *priv; | |
747e252f JP |
678 | unsigned long board = z->resource.start; |
679 | unsigned long base_addr = board + A2065_LANCE; | |
680 | unsigned long mem_start = board + A2065_RAM; | |
1da177e4 LT |
681 | struct resource *r1, *r2; |
682 | int err; | |
683 | ||
1da177e4 LT |
684 | r1 = request_mem_region(base_addr, sizeof(struct lance_regs), |
685 | "Am7990"); | |
686 | if (!r1) | |
687 | return -EBUSY; | |
688 | r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM"); | |
689 | if (!r2) { | |
e6937ee6 | 690 | release_mem_region(base_addr, sizeof(struct lance_regs)); |
1da177e4 LT |
691 | return -EBUSY; |
692 | } | |
693 | ||
694 | dev = alloc_etherdev(sizeof(struct lance_private)); | |
695 | if (dev == NULL) { | |
e6937ee6 JL |
696 | release_mem_region(base_addr, sizeof(struct lance_regs)); |
697 | release_mem_region(mem_start, A2065_RAM_SIZE); | |
1da177e4 LT |
698 | return -ENOMEM; |
699 | } | |
700 | ||
1da177e4 LT |
701 | priv = netdev_priv(dev); |
702 | ||
703 | r1->name = dev->name; | |
704 | r2->name = dev->name; | |
705 | ||
706 | dev->dev_addr[0] = 0x00; | |
707 | if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */ | |
708 | dev->dev_addr[1] = 0x80; | |
709 | dev->dev_addr[2] = 0x10; | |
710 | } else { /* Ameristar */ | |
711 | dev->dev_addr[1] = 0x00; | |
712 | dev->dev_addr[2] = 0x9f; | |
713 | } | |
747e252f JP |
714 | dev->dev_addr[3] = (z->rom.er_SerialNumber >> 16) & 0xff; |
715 | dev->dev_addr[4] = (z->rom.er_SerialNumber >> 8) & 0xff; | |
1da177e4 LT |
716 | dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff; |
717 | dev->base_addr = ZTWO_VADDR(base_addr); | |
718 | dev->mem_start = ZTWO_VADDR(mem_start); | |
747e252f | 719 | dev->mem_end = dev->mem_start + A2065_RAM_SIZE; |
1da177e4 LT |
720 | |
721 | priv->ll = (volatile struct lance_regs *)dev->base_addr; | |
722 | priv->init_block = (struct lance_init_block *)dev->mem_start; | |
723 | priv->lance_init_block = (struct lance_init_block *)A2065_RAM; | |
724 | priv->auto_select = 0; | |
725 | priv->busmaster_regval = LE_C3_BSWP; | |
726 | ||
727 | priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS; | |
728 | priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS; | |
729 | priv->rx_ring_mod_mask = RX_RING_MOD_MASK; | |
730 | priv->tx_ring_mod_mask = TX_RING_MOD_MASK; | |
731 | ||
444f1a92 | 732 | dev->netdev_ops = &lance_netdev_ops; |
1da177e4 | 733 | dev->watchdog_timeo = 5*HZ; |
1da177e4 LT |
734 | dev->dma = 0; |
735 | ||
736 | init_timer(&priv->multicast_timer); | |
737 | priv->multicast_timer.data = (unsigned long) dev; | |
738 | priv->multicast_timer.function = | |
747e252f | 739 | (void (*)(unsigned long))lance_set_multicast; |
1da177e4 LT |
740 | |
741 | err = register_netdev(dev); | |
742 | if (err) { | |
e6937ee6 JL |
743 | release_mem_region(base_addr, sizeof(struct lance_regs)); |
744 | release_mem_region(mem_start, A2065_RAM_SIZE); | |
1da177e4 LT |
745 | free_netdev(dev); |
746 | return err; | |
747 | } | |
748 | zorro_set_drvdata(z, dev); | |
749 | ||
747e252f JP |
750 | netdev_info(dev, "A2065 at 0x%08lx, Ethernet Address %pM\n", |
751 | board, dev->dev_addr); | |
1da177e4 LT |
752 | |
753 | return 0; | |
754 | } | |
755 | ||
756 | ||
757 | static void __devexit a2065_remove_one(struct zorro_dev *z) | |
758 | { | |
759 | struct net_device *dev = zorro_get_drvdata(z); | |
760 | ||
761 | unregister_netdev(dev); | |
762 | release_mem_region(ZTWO_PADDR(dev->base_addr), | |
763 | sizeof(struct lance_regs)); | |
764 | release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE); | |
765 | free_netdev(dev); | |
766 | } | |
767 | ||
768 | static int __init a2065_init_module(void) | |
769 | { | |
33d8675e | 770 | return zorro_register_driver(&a2065_driver); |
1da177e4 LT |
771 | } |
772 | ||
773 | static void __exit a2065_cleanup_module(void) | |
774 | { | |
775 | zorro_unregister_driver(&a2065_driver); | |
776 | } | |
777 | ||
778 | module_init(a2065_init_module); | |
779 | module_exit(a2065_cleanup_module); | |
780 | ||
781 | MODULE_LICENSE("GPL"); |