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bbd2190c VB |
1 | /* Altera Triple-Speed Ethernet MAC driver |
2 | * Copyright (C) 2008-2014 Altera Corporation. All rights reserved | |
3 | * | |
4 | * Contributors: | |
5 | * Dalon Westergreen | |
6 | * Thomas Chou | |
7 | * Ian Abbott | |
8 | * Yuriy Kozlov | |
9 | * Tobias Klauser | |
10 | * Andriy Smolskyy | |
11 | * Roman Bulgakov | |
12 | * Dmytro Mytarchuk | |
13 | * Matthew Gerlach | |
14 | * | |
15 | * Original driver contributed by SLS. | |
16 | * Major updates contributed by GlobalLogic | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify it | |
19 | * under the terms and conditions of the GNU General Public License, | |
20 | * version 2, as published by the Free Software Foundation. | |
21 | * | |
22 | * This program is distributed in the hope it will be useful, but WITHOUT | |
23 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
24 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
25 | * more details. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License along with | |
28 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
29 | */ | |
30 | ||
31 | #include <linux/atomic.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/etherdevice.h> | |
34 | #include <linux/if_vlan.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/interrupt.h> | |
37 | #include <linux/io.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/module.h> | |
40 | #include <linux/netdevice.h> | |
41 | #include <linux/of_device.h> | |
42 | #include <linux/of_mdio.h> | |
43 | #include <linux/of_net.h> | |
44 | #include <linux/of_platform.h> | |
45 | #include <linux/phy.h> | |
46 | #include <linux/platform_device.h> | |
47 | #include <linux/skbuff.h> | |
48 | #include <asm/cacheflush.h> | |
49 | ||
50 | #include "altera_utils.h" | |
51 | #include "altera_tse.h" | |
52 | #include "altera_sgdma.h" | |
53 | #include "altera_msgdma.h" | |
54 | ||
55 | static atomic_t instance_count = ATOMIC_INIT(~0); | |
56 | /* Module parameters */ | |
57 | static int debug = -1; | |
58 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
59 | MODULE_PARM_DESC(debug, "Message Level (-1: default, 0: no output, 16: all)"); | |
60 | ||
61 | static const u32 default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE | | |
62 | NETIF_MSG_LINK | NETIF_MSG_IFUP | | |
63 | NETIF_MSG_IFDOWN); | |
64 | ||
65 | #define RX_DESCRIPTORS 64 | |
66 | static int dma_rx_num = RX_DESCRIPTORS; | |
67 | module_param(dma_rx_num, int, S_IRUGO | S_IWUSR); | |
68 | MODULE_PARM_DESC(dma_rx_num, "Number of descriptors in the RX list"); | |
69 | ||
70 | #define TX_DESCRIPTORS 64 | |
71 | static int dma_tx_num = TX_DESCRIPTORS; | |
72 | module_param(dma_tx_num, int, S_IRUGO | S_IWUSR); | |
73 | MODULE_PARM_DESC(dma_tx_num, "Number of descriptors in the TX list"); | |
74 | ||
75 | ||
76 | #define POLL_PHY (-1) | |
77 | ||
78 | /* Make sure DMA buffer size is larger than the max frame size | |
79 | * plus some alignment offset and a VLAN header. If the max frame size is | |
80 | * 1518, a VLAN header would be additional 4 bytes and additional | |
81 | * headroom for alignment is 2 bytes, 2048 is just fine. | |
82 | */ | |
83 | #define ALTERA_RXDMABUFFER_SIZE 2048 | |
84 | ||
85 | /* Allow network stack to resume queueing packets after we've | |
86 | * finished transmitting at least 1/4 of the packets in the queue. | |
87 | */ | |
88 | #define TSE_TX_THRESH(x) (x->tx_ring_size / 4) | |
89 | ||
90 | #define TXQUEUESTOP_THRESHHOLD 2 | |
91 | ||
92 | static struct of_device_id altera_tse_ids[]; | |
93 | ||
94 | static inline u32 tse_tx_avail(struct altera_tse_private *priv) | |
95 | { | |
96 | return priv->tx_cons + priv->tx_ring_size - priv->tx_prod - 1; | |
97 | } | |
98 | ||
99 | /* MDIO specific functions | |
100 | */ | |
101 | static int altera_tse_mdio_read(struct mii_bus *bus, int mii_id, int regnum) | |
102 | { | |
89830580 VB |
103 | struct net_device *ndev = bus->priv; |
104 | struct altera_tse_private *priv = netdev_priv(ndev); | |
bbd2190c VB |
105 | |
106 | /* set MDIO address */ | |
89830580 VB |
107 | csrwr32((mii_id & 0x1f), priv->mac_dev, |
108 | tse_csroffs(mdio_phy0_addr)); | |
bbd2190c VB |
109 | |
110 | /* get the data */ | |
89830580 VB |
111 | return csrrd32(priv->mac_dev, |
112 | tse_csroffs(mdio_phy0) + regnum * 4) & 0xffff; | |
bbd2190c VB |
113 | } |
114 | ||
115 | static int altera_tse_mdio_write(struct mii_bus *bus, int mii_id, int regnum, | |
116 | u16 value) | |
117 | { | |
89830580 VB |
118 | struct net_device *ndev = bus->priv; |
119 | struct altera_tse_private *priv = netdev_priv(ndev); | |
bbd2190c VB |
120 | |
121 | /* set MDIO address */ | |
89830580 VB |
122 | csrwr32((mii_id & 0x1f), priv->mac_dev, |
123 | tse_csroffs(mdio_phy0_addr)); | |
bbd2190c VB |
124 | |
125 | /* write the data */ | |
89830580 | 126 | csrwr32(value, priv->mac_dev, tse_csroffs(mdio_phy0) + regnum * 4); |
bbd2190c VB |
127 | return 0; |
128 | } | |
129 | ||
130 | static int altera_tse_mdio_create(struct net_device *dev, unsigned int id) | |
131 | { | |
132 | struct altera_tse_private *priv = netdev_priv(dev); | |
133 | int ret; | |
134 | int i; | |
135 | struct device_node *mdio_node = NULL; | |
136 | struct mii_bus *mdio = NULL; | |
137 | struct device_node *child_node = NULL; | |
138 | ||
139 | for_each_child_of_node(priv->device->of_node, child_node) { | |
140 | if (of_device_is_compatible(child_node, "altr,tse-mdio")) { | |
141 | mdio_node = child_node; | |
142 | break; | |
143 | } | |
144 | } | |
145 | ||
146 | if (mdio_node) { | |
147 | netdev_dbg(dev, "FOUND MDIO subnode\n"); | |
148 | } else { | |
149 | netdev_dbg(dev, "NO MDIO subnode\n"); | |
150 | return 0; | |
151 | } | |
152 | ||
153 | mdio = mdiobus_alloc(); | |
154 | if (mdio == NULL) { | |
155 | netdev_err(dev, "Error allocating MDIO bus\n"); | |
156 | return -ENOMEM; | |
157 | } | |
158 | ||
159 | mdio->name = ALTERA_TSE_RESOURCE_NAME; | |
160 | mdio->read = &altera_tse_mdio_read; | |
161 | mdio->write = &altera_tse_mdio_write; | |
162 | snprintf(mdio->id, MII_BUS_ID_SIZE, "%s-%u", mdio->name, id); | |
163 | ||
164 | mdio->irq = kcalloc(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL); | |
165 | if (mdio->irq == NULL) { | |
166 | ret = -ENOMEM; | |
167 | goto out_free_mdio; | |
168 | } | |
169 | for (i = 0; i < PHY_MAX_ADDR; i++) | |
170 | mdio->irq[i] = PHY_POLL; | |
171 | ||
89830580 | 172 | mdio->priv = dev; |
bbd2190c VB |
173 | mdio->parent = priv->device; |
174 | ||
175 | ret = of_mdiobus_register(mdio, mdio_node); | |
176 | if (ret != 0) { | |
177 | netdev_err(dev, "Cannot register MDIO bus %s\n", | |
178 | mdio->id); | |
179 | goto out_free_mdio_irq; | |
180 | } | |
181 | ||
182 | if (netif_msg_drv(priv)) | |
183 | netdev_info(dev, "MDIO bus %s: created\n", mdio->id); | |
184 | ||
185 | priv->mdio = mdio; | |
186 | return 0; | |
187 | out_free_mdio_irq: | |
188 | kfree(mdio->irq); | |
189 | out_free_mdio: | |
190 | mdiobus_free(mdio); | |
191 | mdio = NULL; | |
192 | return ret; | |
193 | } | |
194 | ||
195 | static void altera_tse_mdio_destroy(struct net_device *dev) | |
196 | { | |
197 | struct altera_tse_private *priv = netdev_priv(dev); | |
198 | ||
199 | if (priv->mdio == NULL) | |
200 | return; | |
201 | ||
202 | if (netif_msg_drv(priv)) | |
203 | netdev_info(dev, "MDIO bus %s: removed\n", | |
204 | priv->mdio->id); | |
205 | ||
206 | mdiobus_unregister(priv->mdio); | |
207 | kfree(priv->mdio->irq); | |
208 | mdiobus_free(priv->mdio); | |
209 | priv->mdio = NULL; | |
210 | } | |
211 | ||
212 | static int tse_init_rx_buffer(struct altera_tse_private *priv, | |
213 | struct tse_buffer *rxbuffer, int len) | |
214 | { | |
215 | rxbuffer->skb = netdev_alloc_skb_ip_align(priv->dev, len); | |
216 | if (!rxbuffer->skb) | |
217 | return -ENOMEM; | |
218 | ||
219 | rxbuffer->dma_addr = dma_map_single(priv->device, rxbuffer->skb->data, | |
220 | len, | |
221 | DMA_FROM_DEVICE); | |
222 | ||
223 | if (dma_mapping_error(priv->device, rxbuffer->dma_addr)) { | |
224 | netdev_err(priv->dev, "%s: DMA mapping error\n", __func__); | |
225 | dev_kfree_skb_any(rxbuffer->skb); | |
226 | return -EINVAL; | |
227 | } | |
37c0ffaa | 228 | rxbuffer->dma_addr &= (dma_addr_t)~3; |
bbd2190c VB |
229 | rxbuffer->len = len; |
230 | return 0; | |
231 | } | |
232 | ||
233 | static void tse_free_rx_buffer(struct altera_tse_private *priv, | |
234 | struct tse_buffer *rxbuffer) | |
235 | { | |
236 | struct sk_buff *skb = rxbuffer->skb; | |
237 | dma_addr_t dma_addr = rxbuffer->dma_addr; | |
238 | ||
239 | if (skb != NULL) { | |
240 | if (dma_addr) | |
241 | dma_unmap_single(priv->device, dma_addr, | |
242 | rxbuffer->len, | |
243 | DMA_FROM_DEVICE); | |
244 | dev_kfree_skb_any(skb); | |
245 | rxbuffer->skb = NULL; | |
246 | rxbuffer->dma_addr = 0; | |
247 | } | |
248 | } | |
249 | ||
250 | /* Unmap and free Tx buffer resources | |
251 | */ | |
252 | static void tse_free_tx_buffer(struct altera_tse_private *priv, | |
253 | struct tse_buffer *buffer) | |
254 | { | |
255 | if (buffer->dma_addr) { | |
256 | if (buffer->mapped_as_page) | |
257 | dma_unmap_page(priv->device, buffer->dma_addr, | |
258 | buffer->len, DMA_TO_DEVICE); | |
259 | else | |
260 | dma_unmap_single(priv->device, buffer->dma_addr, | |
261 | buffer->len, DMA_TO_DEVICE); | |
262 | buffer->dma_addr = 0; | |
263 | } | |
264 | if (buffer->skb) { | |
265 | dev_kfree_skb_any(buffer->skb); | |
266 | buffer->skb = NULL; | |
267 | } | |
268 | } | |
269 | ||
270 | static int alloc_init_skbufs(struct altera_tse_private *priv) | |
271 | { | |
272 | unsigned int rx_descs = priv->rx_ring_size; | |
273 | unsigned int tx_descs = priv->tx_ring_size; | |
274 | int ret = -ENOMEM; | |
275 | int i; | |
276 | ||
277 | /* Create Rx ring buffer */ | |
278 | priv->rx_ring = kcalloc(rx_descs, sizeof(struct tse_buffer), | |
279 | GFP_KERNEL); | |
280 | if (!priv->rx_ring) | |
281 | goto err_rx_ring; | |
282 | ||
283 | /* Create Tx ring buffer */ | |
284 | priv->tx_ring = kcalloc(tx_descs, sizeof(struct tse_buffer), | |
285 | GFP_KERNEL); | |
286 | if (!priv->tx_ring) | |
287 | goto err_tx_ring; | |
288 | ||
289 | priv->tx_cons = 0; | |
290 | priv->tx_prod = 0; | |
291 | ||
292 | /* Init Rx ring */ | |
293 | for (i = 0; i < rx_descs; i++) { | |
294 | ret = tse_init_rx_buffer(priv, &priv->rx_ring[i], | |
295 | priv->rx_dma_buf_sz); | |
296 | if (ret) | |
297 | goto err_init_rx_buffers; | |
298 | } | |
299 | ||
300 | priv->rx_cons = 0; | |
301 | priv->rx_prod = 0; | |
302 | ||
303 | return 0; | |
304 | err_init_rx_buffers: | |
305 | while (--i >= 0) | |
306 | tse_free_rx_buffer(priv, &priv->rx_ring[i]); | |
307 | kfree(priv->tx_ring); | |
308 | err_tx_ring: | |
309 | kfree(priv->rx_ring); | |
310 | err_rx_ring: | |
311 | return ret; | |
312 | } | |
313 | ||
314 | static void free_skbufs(struct net_device *dev) | |
315 | { | |
316 | struct altera_tse_private *priv = netdev_priv(dev); | |
317 | unsigned int rx_descs = priv->rx_ring_size; | |
318 | unsigned int tx_descs = priv->tx_ring_size; | |
319 | int i; | |
320 | ||
321 | /* Release the DMA TX/RX socket buffers */ | |
322 | for (i = 0; i < rx_descs; i++) | |
323 | tse_free_rx_buffer(priv, &priv->rx_ring[i]); | |
324 | for (i = 0; i < tx_descs; i++) | |
325 | tse_free_tx_buffer(priv, &priv->tx_ring[i]); | |
326 | ||
327 | ||
328 | kfree(priv->tx_ring); | |
329 | } | |
330 | ||
331 | /* Reallocate the skb for the reception process | |
332 | */ | |
333 | static inline void tse_rx_refill(struct altera_tse_private *priv) | |
334 | { | |
335 | unsigned int rxsize = priv->rx_ring_size; | |
336 | unsigned int entry; | |
337 | int ret; | |
338 | ||
339 | for (; priv->rx_cons - priv->rx_prod > 0; | |
340 | priv->rx_prod++) { | |
341 | entry = priv->rx_prod % rxsize; | |
342 | if (likely(priv->rx_ring[entry].skb == NULL)) { | |
343 | ret = tse_init_rx_buffer(priv, &priv->rx_ring[entry], | |
344 | priv->rx_dma_buf_sz); | |
345 | if (unlikely(ret != 0)) | |
346 | break; | |
347 | priv->dmaops->add_rx_desc(priv, &priv->rx_ring[entry]); | |
348 | } | |
349 | } | |
350 | } | |
351 | ||
352 | /* Pull out the VLAN tag and fix up the packet | |
353 | */ | |
354 | static inline void tse_rx_vlan(struct net_device *dev, struct sk_buff *skb) | |
355 | { | |
356 | struct ethhdr *eth_hdr; | |
357 | u16 vid; | |
358 | if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && | |
359 | !__vlan_get_tag(skb, &vid)) { | |
360 | eth_hdr = (struct ethhdr *)skb->data; | |
361 | memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2); | |
362 | skb_pull(skb, VLAN_HLEN); | |
363 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); | |
364 | } | |
365 | } | |
366 | ||
367 | /* Receive a packet: retrieve and pass over to upper levels | |
368 | */ | |
369 | static int tse_rx(struct altera_tse_private *priv, int limit) | |
370 | { | |
371 | unsigned int count = 0; | |
372 | unsigned int next_entry; | |
373 | struct sk_buff *skb; | |
374 | unsigned int entry = priv->rx_cons % priv->rx_ring_size; | |
375 | u32 rxstatus; | |
376 | u16 pktlength; | |
377 | u16 pktstatus; | |
378 | ||
379 | while ((rxstatus = priv->dmaops->get_rx_status(priv)) != 0) { | |
380 | pktstatus = rxstatus >> 16; | |
381 | pktlength = rxstatus & 0xffff; | |
382 | ||
383 | if ((pktstatus & 0xFF) || (pktlength == 0)) | |
384 | netdev_err(priv->dev, | |
385 | "RCV pktstatus %08X pktlength %08X\n", | |
386 | pktstatus, pktlength); | |
387 | ||
388 | count++; | |
389 | next_entry = (++priv->rx_cons) % priv->rx_ring_size; | |
390 | ||
391 | skb = priv->rx_ring[entry].skb; | |
392 | if (unlikely(!skb)) { | |
393 | netdev_err(priv->dev, | |
394 | "%s: Inconsistent Rx descriptor chain\n", | |
395 | __func__); | |
396 | priv->dev->stats.rx_dropped++; | |
397 | break; | |
398 | } | |
399 | priv->rx_ring[entry].skb = NULL; | |
400 | ||
401 | skb_put(skb, pktlength); | |
402 | ||
403 | /* make cache consistent with receive packet buffer */ | |
404 | dma_sync_single_for_cpu(priv->device, | |
405 | priv->rx_ring[entry].dma_addr, | |
406 | priv->rx_ring[entry].len, | |
407 | DMA_FROM_DEVICE); | |
408 | ||
409 | dma_unmap_single(priv->device, priv->rx_ring[entry].dma_addr, | |
410 | priv->rx_ring[entry].len, DMA_FROM_DEVICE); | |
411 | ||
412 | if (netif_msg_pktdata(priv)) { | |
413 | netdev_info(priv->dev, "frame received %d bytes\n", | |
414 | pktlength); | |
415 | print_hex_dump(KERN_ERR, "data: ", DUMP_PREFIX_OFFSET, | |
416 | 16, 1, skb->data, pktlength, true); | |
417 | } | |
418 | ||
419 | tse_rx_vlan(priv->dev, skb); | |
420 | ||
421 | skb->protocol = eth_type_trans(skb, priv->dev); | |
422 | skb_checksum_none_assert(skb); | |
423 | ||
424 | napi_gro_receive(&priv->napi, skb); | |
425 | ||
426 | priv->dev->stats.rx_packets++; | |
427 | priv->dev->stats.rx_bytes += pktlength; | |
428 | ||
429 | entry = next_entry; | |
37c0ffaa VB |
430 | |
431 | tse_rx_refill(priv); | |
bbd2190c VB |
432 | } |
433 | ||
bbd2190c VB |
434 | return count; |
435 | } | |
436 | ||
437 | /* Reclaim resources after transmission completes | |
438 | */ | |
439 | static int tse_tx_complete(struct altera_tse_private *priv) | |
440 | { | |
441 | unsigned int txsize = priv->tx_ring_size; | |
442 | u32 ready; | |
443 | unsigned int entry; | |
444 | struct tse_buffer *tx_buff; | |
445 | int txcomplete = 0; | |
446 | ||
447 | spin_lock(&priv->tx_lock); | |
448 | ||
449 | ready = priv->dmaops->tx_completions(priv); | |
450 | ||
451 | /* Free sent buffers */ | |
452 | while (ready && (priv->tx_cons != priv->tx_prod)) { | |
453 | entry = priv->tx_cons % txsize; | |
454 | tx_buff = &priv->tx_ring[entry]; | |
455 | ||
456 | if (netif_msg_tx_done(priv)) | |
457 | netdev_dbg(priv->dev, "%s: curr %d, dirty %d\n", | |
458 | __func__, priv->tx_prod, priv->tx_cons); | |
459 | ||
460 | if (likely(tx_buff->skb)) | |
461 | priv->dev->stats.tx_packets++; | |
462 | ||
463 | tse_free_tx_buffer(priv, tx_buff); | |
464 | priv->tx_cons++; | |
465 | ||
466 | txcomplete++; | |
467 | ready--; | |
468 | } | |
469 | ||
470 | if (unlikely(netif_queue_stopped(priv->dev) && | |
471 | tse_tx_avail(priv) > TSE_TX_THRESH(priv))) { | |
472 | netif_tx_lock(priv->dev); | |
473 | if (netif_queue_stopped(priv->dev) && | |
474 | tse_tx_avail(priv) > TSE_TX_THRESH(priv)) { | |
475 | if (netif_msg_tx_done(priv)) | |
476 | netdev_dbg(priv->dev, "%s: restart transmit\n", | |
477 | __func__); | |
478 | netif_wake_queue(priv->dev); | |
479 | } | |
480 | netif_tx_unlock(priv->dev); | |
481 | } | |
482 | ||
483 | spin_unlock(&priv->tx_lock); | |
484 | return txcomplete; | |
485 | } | |
486 | ||
487 | /* NAPI polling function | |
488 | */ | |
489 | static int tse_poll(struct napi_struct *napi, int budget) | |
490 | { | |
491 | struct altera_tse_private *priv = | |
492 | container_of(napi, struct altera_tse_private, napi); | |
493 | int rxcomplete = 0; | |
494 | int txcomplete = 0; | |
495 | unsigned long int flags; | |
496 | ||
497 | txcomplete = tse_tx_complete(priv); | |
498 | ||
499 | rxcomplete = tse_rx(priv, budget); | |
500 | ||
501 | if (rxcomplete >= budget || txcomplete > 0) | |
502 | return rxcomplete; | |
503 | ||
504 | napi_gro_flush(napi, false); | |
505 | __napi_complete(napi); | |
506 | ||
507 | netdev_dbg(priv->dev, | |
508 | "NAPI Complete, did %d packets with budget %d\n", | |
509 | txcomplete+rxcomplete, budget); | |
510 | ||
511 | spin_lock_irqsave(&priv->rxdma_irq_lock, flags); | |
512 | priv->dmaops->enable_rxirq(priv); | |
513 | priv->dmaops->enable_txirq(priv); | |
514 | spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); | |
515 | return rxcomplete + txcomplete; | |
516 | } | |
517 | ||
518 | /* DMA TX & RX FIFO interrupt routing | |
519 | */ | |
520 | static irqreturn_t altera_isr(int irq, void *dev_id) | |
521 | { | |
522 | struct net_device *dev = dev_id; | |
523 | struct altera_tse_private *priv; | |
524 | unsigned long int flags; | |
525 | ||
bbd2190c VB |
526 | if (unlikely(!dev)) { |
527 | pr_err("%s: invalid dev pointer\n", __func__); | |
528 | return IRQ_NONE; | |
529 | } | |
530 | priv = netdev_priv(dev); | |
531 | ||
532 | /* turn off desc irqs and enable napi rx */ | |
533 | spin_lock_irqsave(&priv->rxdma_irq_lock, flags); | |
534 | ||
535 | if (likely(napi_schedule_prep(&priv->napi))) { | |
536 | priv->dmaops->disable_rxirq(priv); | |
537 | priv->dmaops->disable_txirq(priv); | |
538 | __napi_schedule(&priv->napi); | |
539 | } | |
540 | ||
541 | /* reset IRQs */ | |
542 | priv->dmaops->clear_rxirq(priv); | |
543 | priv->dmaops->clear_txirq(priv); | |
544 | ||
545 | spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); | |
546 | ||
547 | return IRQ_HANDLED; | |
548 | } | |
549 | ||
550 | /* Transmit a packet (called by the kernel). Dispatches | |
551 | * either the SGDMA method for transmitting or the | |
552 | * MSGDMA method, assumes no scatter/gather support, | |
553 | * implying an assumption that there's only one | |
554 | * physically contiguous fragment starting at | |
555 | * skb->data, for length of skb_headlen(skb). | |
556 | */ | |
557 | static int tse_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
558 | { | |
559 | struct altera_tse_private *priv = netdev_priv(dev); | |
560 | unsigned int txsize = priv->tx_ring_size; | |
561 | unsigned int entry; | |
562 | struct tse_buffer *buffer = NULL; | |
563 | int nfrags = skb_shinfo(skb)->nr_frags; | |
564 | unsigned int nopaged_len = skb_headlen(skb); | |
565 | enum netdev_tx ret = NETDEV_TX_OK; | |
566 | dma_addr_t dma_addr; | |
bbd2190c VB |
567 | |
568 | spin_lock_bh(&priv->tx_lock); | |
569 | ||
570 | if (unlikely(tse_tx_avail(priv) < nfrags + 1)) { | |
571 | if (!netif_queue_stopped(dev)) { | |
572 | netif_stop_queue(dev); | |
573 | /* This is a hard error, log it. */ | |
574 | netdev_err(priv->dev, | |
575 | "%s: Tx list full when queue awake\n", | |
576 | __func__); | |
577 | } | |
578 | ret = NETDEV_TX_BUSY; | |
579 | goto out; | |
580 | } | |
581 | ||
582 | /* Map the first skb fragment */ | |
583 | entry = priv->tx_prod % txsize; | |
584 | buffer = &priv->tx_ring[entry]; | |
585 | ||
586 | dma_addr = dma_map_single(priv->device, skb->data, nopaged_len, | |
587 | DMA_TO_DEVICE); | |
588 | if (dma_mapping_error(priv->device, dma_addr)) { | |
589 | netdev_err(priv->dev, "%s: DMA mapping error\n", __func__); | |
590 | ret = NETDEV_TX_OK; | |
591 | goto out; | |
592 | } | |
593 | ||
594 | buffer->skb = skb; | |
595 | buffer->dma_addr = dma_addr; | |
596 | buffer->len = nopaged_len; | |
597 | ||
598 | /* Push data out of the cache hierarchy into main memory */ | |
599 | dma_sync_single_for_device(priv->device, buffer->dma_addr, | |
600 | buffer->len, DMA_TO_DEVICE); | |
601 | ||
89830580 | 602 | priv->dmaops->tx_buffer(priv, buffer); |
bbd2190c VB |
603 | |
604 | skb_tx_timestamp(skb); | |
605 | ||
606 | priv->tx_prod++; | |
607 | dev->stats.tx_bytes += skb->len; | |
608 | ||
609 | if (unlikely(tse_tx_avail(priv) <= TXQUEUESTOP_THRESHHOLD)) { | |
610 | if (netif_msg_hw(priv)) | |
611 | netdev_dbg(priv->dev, "%s: stop transmitted packets\n", | |
612 | __func__); | |
613 | netif_stop_queue(dev); | |
614 | } | |
615 | ||
616 | out: | |
617 | spin_unlock_bh(&priv->tx_lock); | |
618 | ||
619 | return ret; | |
620 | } | |
621 | ||
622 | /* Called every time the controller might need to be made | |
623 | * aware of new link state. The PHY code conveys this | |
624 | * information through variables in the phydev structure, and this | |
625 | * function converts those variables into the appropriate | |
626 | * register values, and can bring down the device if needed. | |
627 | */ | |
628 | static void altera_tse_adjust_link(struct net_device *dev) | |
629 | { | |
630 | struct altera_tse_private *priv = netdev_priv(dev); | |
631 | struct phy_device *phydev = priv->phydev; | |
632 | int new_state = 0; | |
633 | ||
634 | /* only change config if there is a link */ | |
635 | spin_lock(&priv->mac_cfg_lock); | |
636 | if (phydev->link) { | |
637 | /* Read old config */ | |
638 | u32 cfg_reg = ioread32(&priv->mac_dev->command_config); | |
639 | ||
640 | /* Check duplex */ | |
641 | if (phydev->duplex != priv->oldduplex) { | |
642 | new_state = 1; | |
643 | if (!(phydev->duplex)) | |
644 | cfg_reg |= MAC_CMDCFG_HD_ENA; | |
645 | else | |
646 | cfg_reg &= ~MAC_CMDCFG_HD_ENA; | |
647 | ||
648 | netdev_dbg(priv->dev, "%s: Link duplex = 0x%x\n", | |
649 | dev->name, phydev->duplex); | |
650 | ||
651 | priv->oldduplex = phydev->duplex; | |
652 | } | |
653 | ||
654 | /* Check speed */ | |
655 | if (phydev->speed != priv->oldspeed) { | |
656 | new_state = 1; | |
657 | switch (phydev->speed) { | |
658 | case 1000: | |
659 | cfg_reg |= MAC_CMDCFG_ETH_SPEED; | |
660 | cfg_reg &= ~MAC_CMDCFG_ENA_10; | |
661 | break; | |
662 | case 100: | |
663 | cfg_reg &= ~MAC_CMDCFG_ETH_SPEED; | |
664 | cfg_reg &= ~MAC_CMDCFG_ENA_10; | |
665 | break; | |
666 | case 10: | |
667 | cfg_reg &= ~MAC_CMDCFG_ETH_SPEED; | |
668 | cfg_reg |= MAC_CMDCFG_ENA_10; | |
669 | break; | |
670 | default: | |
671 | if (netif_msg_link(priv)) | |
672 | netdev_warn(dev, "Speed (%d) is not 10/100/1000!\n", | |
673 | phydev->speed); | |
674 | break; | |
675 | } | |
676 | priv->oldspeed = phydev->speed; | |
677 | } | |
678 | iowrite32(cfg_reg, &priv->mac_dev->command_config); | |
679 | ||
680 | if (!priv->oldlink) { | |
681 | new_state = 1; | |
682 | priv->oldlink = 1; | |
683 | } | |
684 | } else if (priv->oldlink) { | |
685 | new_state = 1; | |
686 | priv->oldlink = 0; | |
687 | priv->oldspeed = 0; | |
688 | priv->oldduplex = -1; | |
689 | } | |
690 | ||
691 | if (new_state && netif_msg_link(priv)) | |
692 | phy_print_status(phydev); | |
693 | ||
694 | spin_unlock(&priv->mac_cfg_lock); | |
695 | } | |
696 | static struct phy_device *connect_local_phy(struct net_device *dev) | |
697 | { | |
698 | struct altera_tse_private *priv = netdev_priv(dev); | |
699 | struct phy_device *phydev = NULL; | |
700 | char phy_id_fmt[MII_BUS_ID_SIZE + 3]; | |
bbd2190c VB |
701 | |
702 | if (priv->phy_addr != POLL_PHY) { | |
703 | snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, | |
704 | priv->mdio->id, priv->phy_addr); | |
705 | ||
706 | netdev_dbg(dev, "trying to attach to %s\n", phy_id_fmt); | |
707 | ||
708 | phydev = phy_connect(dev, phy_id_fmt, &altera_tse_adjust_link, | |
709 | priv->phy_iface); | |
710 | if (IS_ERR(phydev)) | |
711 | netdev_err(dev, "Could not attach to PHY\n"); | |
712 | ||
713 | } else { | |
89830580 | 714 | int ret; |
bbd2190c VB |
715 | phydev = phy_find_first(priv->mdio); |
716 | if (phydev == NULL) { | |
717 | netdev_err(dev, "No PHY found\n"); | |
718 | return phydev; | |
719 | } | |
720 | ||
721 | ret = phy_connect_direct(dev, phydev, &altera_tse_adjust_link, | |
722 | priv->phy_iface); | |
723 | if (ret != 0) { | |
724 | netdev_err(dev, "Could not attach to PHY\n"); | |
725 | phydev = NULL; | |
726 | } | |
727 | } | |
728 | return phydev; | |
729 | } | |
730 | ||
004fa118 WL |
731 | static int altera_tse_phy_get_addr_mdio_create(struct net_device *dev) |
732 | { | |
733 | struct altera_tse_private *priv = netdev_priv(dev); | |
734 | struct device_node *np = priv->device->of_node; | |
735 | int ret = 0; | |
736 | ||
737 | priv->phy_iface = of_get_phy_mode(np); | |
738 | ||
3354313e WL |
739 | /* Avoid get phy addr and create mdio if no phy is present */ |
740 | if (!priv->phy_iface) | |
741 | return 0; | |
742 | ||
004fa118 WL |
743 | /* try to get PHY address from device tree, use PHY autodetection if |
744 | * no valid address is given | |
745 | */ | |
746 | ||
747 | if (of_property_read_u32(priv->device->of_node, "phy-addr", | |
748 | &priv->phy_addr)) { | |
749 | priv->phy_addr = POLL_PHY; | |
750 | } | |
751 | ||
752 | if (!((priv->phy_addr == POLL_PHY) || | |
753 | ((priv->phy_addr >= 0) && (priv->phy_addr < PHY_MAX_ADDR)))) { | |
754 | netdev_err(dev, "invalid phy-addr specified %d\n", | |
755 | priv->phy_addr); | |
756 | return -ENODEV; | |
757 | } | |
758 | ||
759 | /* Create/attach to MDIO bus */ | |
760 | ret = altera_tse_mdio_create(dev, | |
761 | atomic_add_return(1, &instance_count)); | |
762 | ||
763 | if (ret) | |
764 | return -ENODEV; | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
bbd2190c VB |
769 | /* Initialize driver's PHY state, and attach to the PHY |
770 | */ | |
771 | static int init_phy(struct net_device *dev) | |
772 | { | |
773 | struct altera_tse_private *priv = netdev_priv(dev); | |
774 | struct phy_device *phydev; | |
775 | struct device_node *phynode; | |
776 | ||
3354313e WL |
777 | /* Avoid init phy in case of no phy present */ |
778 | if (!priv->phy_iface) | |
779 | return 0; | |
780 | ||
bbd2190c VB |
781 | priv->oldlink = 0; |
782 | priv->oldspeed = 0; | |
783 | priv->oldduplex = -1; | |
784 | ||
785 | phynode = of_parse_phandle(priv->device->of_node, "phy-handle", 0); | |
786 | ||
787 | if (!phynode) { | |
788 | netdev_dbg(dev, "no phy-handle found\n"); | |
789 | if (!priv->mdio) { | |
790 | netdev_err(dev, | |
791 | "No phy-handle nor local mdio specified\n"); | |
792 | return -ENODEV; | |
793 | } | |
794 | phydev = connect_local_phy(dev); | |
795 | } else { | |
796 | netdev_dbg(dev, "phy-handle found\n"); | |
797 | phydev = of_phy_connect(dev, phynode, | |
798 | &altera_tse_adjust_link, 0, priv->phy_iface); | |
799 | } | |
800 | ||
801 | if (!phydev) { | |
802 | netdev_err(dev, "Could not find the PHY\n"); | |
803 | return -ENODEV; | |
804 | } | |
805 | ||
806 | /* Stop Advertising 1000BASE Capability if interface is not GMII | |
807 | * Note: Checkpatch throws CHECKs for the camel case defines below, | |
808 | * it's ok to ignore. | |
809 | */ | |
810 | if ((priv->phy_iface == PHY_INTERFACE_MODE_MII) || | |
811 | (priv->phy_iface == PHY_INTERFACE_MODE_RMII)) | |
812 | phydev->advertising &= ~(SUPPORTED_1000baseT_Half | | |
813 | SUPPORTED_1000baseT_Full); | |
814 | ||
815 | /* Broken HW is sometimes missing the pull-up resistor on the | |
816 | * MDIO line, which results in reads to non-existent devices returning | |
817 | * 0 rather than 0xffff. Catch this here and treat 0 as a non-existent | |
818 | * device as well. | |
819 | * Note: phydev->phy_id is the result of reading the UID PHY registers. | |
820 | */ | |
821 | if (phydev->phy_id == 0) { | |
822 | netdev_err(dev, "Bad PHY UID 0x%08x\n", phydev->phy_id); | |
823 | phy_disconnect(phydev); | |
824 | return -ENODEV; | |
825 | } | |
826 | ||
827 | netdev_dbg(dev, "attached to PHY %d UID 0x%08x Link = %d\n", | |
828 | phydev->addr, phydev->phy_id, phydev->link); | |
829 | ||
830 | priv->phydev = phydev; | |
831 | return 0; | |
832 | } | |
833 | ||
834 | static void tse_update_mac_addr(struct altera_tse_private *priv, u8 *addr) | |
835 | { | |
bbd2190c VB |
836 | u32 msb; |
837 | u32 lsb; | |
838 | ||
839 | msb = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; | |
840 | lsb = ((addr[5] << 8) | addr[4]) & 0xffff; | |
841 | ||
842 | /* Set primary MAC address */ | |
89830580 VB |
843 | csrwr32(msb, priv->mac_dev, tse_csroffs(mac_addr_0)); |
844 | csrwr32(lsb, priv->mac_dev, tse_csroffs(mac_addr_1)); | |
bbd2190c VB |
845 | } |
846 | ||
847 | /* MAC software reset. | |
848 | * When reset is triggered, the MAC function completes the current | |
849 | * transmission or reception, and subsequently disables the transmit and | |
850 | * receive logic, flushes the receive FIFO buffer, and resets the statistics | |
851 | * counters. | |
852 | */ | |
853 | static int reset_mac(struct altera_tse_private *priv) | |
854 | { | |
bbd2190c VB |
855 | int counter; |
856 | u32 dat; | |
857 | ||
89830580 | 858 | dat = csrrd32(priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
859 | dat &= ~(MAC_CMDCFG_TX_ENA | MAC_CMDCFG_RX_ENA); |
860 | dat |= MAC_CMDCFG_SW_RESET | MAC_CMDCFG_CNT_RESET; | |
89830580 | 861 | csrwr32(dat, priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
862 | |
863 | counter = 0; | |
864 | while (counter++ < ALTERA_TSE_SW_RESET_WATCHDOG_CNTR) { | |
89830580 VB |
865 | if (tse_bit_is_clear(priv->mac_dev, tse_csroffs(command_config), |
866 | MAC_CMDCFG_SW_RESET)) | |
bbd2190c VB |
867 | break; |
868 | udelay(1); | |
869 | } | |
870 | ||
871 | if (counter >= ALTERA_TSE_SW_RESET_WATCHDOG_CNTR) { | |
89830580 | 872 | dat = csrrd32(priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c | 873 | dat &= ~MAC_CMDCFG_SW_RESET; |
89830580 | 874 | csrwr32(dat, priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
875 | return -1; |
876 | } | |
877 | return 0; | |
878 | } | |
879 | ||
880 | /* Initialize MAC core registers | |
881 | */ | |
882 | static int init_mac(struct altera_tse_private *priv) | |
883 | { | |
bbd2190c VB |
884 | unsigned int cmd = 0; |
885 | u32 frm_length; | |
886 | ||
887 | /* Setup Rx FIFO */ | |
89830580 VB |
888 | csrwr32(priv->rx_fifo_depth - ALTERA_TSE_RX_SECTION_EMPTY, |
889 | priv->mac_dev, tse_csroffs(rx_section_empty)); | |
890 | ||
891 | csrwr32(ALTERA_TSE_RX_SECTION_FULL, priv->mac_dev, | |
892 | tse_csroffs(rx_section_full)); | |
893 | ||
894 | csrwr32(ALTERA_TSE_RX_ALMOST_EMPTY, priv->mac_dev, | |
895 | tse_csroffs(rx_almost_empty)); | |
896 | ||
897 | csrwr32(ALTERA_TSE_RX_ALMOST_FULL, priv->mac_dev, | |
898 | tse_csroffs(rx_almost_full)); | |
bbd2190c VB |
899 | |
900 | /* Setup Tx FIFO */ | |
89830580 VB |
901 | csrwr32(priv->tx_fifo_depth - ALTERA_TSE_TX_SECTION_EMPTY, |
902 | priv->mac_dev, tse_csroffs(tx_section_empty)); | |
903 | ||
904 | csrwr32(ALTERA_TSE_TX_SECTION_FULL, priv->mac_dev, | |
905 | tse_csroffs(tx_section_full)); | |
906 | ||
907 | csrwr32(ALTERA_TSE_TX_ALMOST_EMPTY, priv->mac_dev, | |
908 | tse_csroffs(tx_almost_empty)); | |
909 | ||
910 | csrwr32(ALTERA_TSE_TX_ALMOST_FULL, priv->mac_dev, | |
911 | tse_csroffs(tx_almost_full)); | |
bbd2190c VB |
912 | |
913 | /* MAC Address Configuration */ | |
914 | tse_update_mac_addr(priv, priv->dev->dev_addr); | |
915 | ||
916 | /* MAC Function Configuration */ | |
917 | frm_length = ETH_HLEN + priv->dev->mtu + ETH_FCS_LEN; | |
89830580 VB |
918 | csrwr32(frm_length, priv->mac_dev, tse_csroffs(frm_length)); |
919 | ||
920 | csrwr32(ALTERA_TSE_TX_IPG_LENGTH, priv->mac_dev, | |
921 | tse_csroffs(tx_ipg_length)); | |
bbd2190c VB |
922 | |
923 | /* Disable RX/TX shift 16 for alignment of all received frames on 16-bit | |
924 | * start address | |
925 | */ | |
89830580 VB |
926 | tse_set_bit(priv->mac_dev, tse_csroffs(rx_cmd_stat), |
927 | ALTERA_TSE_RX_CMD_STAT_RX_SHIFT16); | |
928 | ||
929 | tse_clear_bit(priv->mac_dev, tse_csroffs(tx_cmd_stat), | |
930 | ALTERA_TSE_TX_CMD_STAT_TX_SHIFT16 | | |
931 | ALTERA_TSE_TX_CMD_STAT_OMIT_CRC); | |
bbd2190c VB |
932 | |
933 | /* Set the MAC options */ | |
89830580 | 934 | cmd = csrrd32(priv->mac_dev, tse_csroffs(command_config)); |
37c0ffaa | 935 | cmd &= ~MAC_CMDCFG_PAD_EN; /* No padding Removal on Receive */ |
bbd2190c VB |
936 | cmd &= ~MAC_CMDCFG_CRC_FWD; /* CRC Removal */ |
937 | cmd |= MAC_CMDCFG_RX_ERR_DISC; /* Automatically discard frames | |
938 | * with CRC errors | |
939 | */ | |
940 | cmd |= MAC_CMDCFG_CNTL_FRM_ENA; | |
941 | cmd &= ~MAC_CMDCFG_TX_ENA; | |
942 | cmd &= ~MAC_CMDCFG_RX_ENA; | |
37c0ffaa VB |
943 | |
944 | /* Default speed and duplex setting, full/100 */ | |
945 | cmd &= ~MAC_CMDCFG_HD_ENA; | |
946 | cmd &= ~MAC_CMDCFG_ETH_SPEED; | |
947 | cmd &= ~MAC_CMDCFG_ENA_10; | |
948 | ||
89830580 | 949 | csrwr32(cmd, priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c | 950 | |
89830580 VB |
951 | csrwr32(ALTERA_TSE_PAUSE_QUANTA, priv->mac_dev, |
952 | tse_csroffs(pause_quanta)); | |
5aec4ee3 | 953 | |
bbd2190c VB |
954 | if (netif_msg_hw(priv)) |
955 | dev_dbg(priv->device, | |
956 | "MAC post-initialization: CMD_CONFIG = 0x%08x\n", cmd); | |
957 | ||
958 | return 0; | |
959 | } | |
960 | ||
961 | /* Start/stop MAC transmission logic | |
962 | */ | |
963 | static void tse_set_mac(struct altera_tse_private *priv, bool enable) | |
964 | { | |
89830580 | 965 | u32 value = csrrd32(priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
966 | |
967 | if (enable) | |
968 | value |= MAC_CMDCFG_TX_ENA | MAC_CMDCFG_RX_ENA; | |
969 | else | |
970 | value &= ~(MAC_CMDCFG_TX_ENA | MAC_CMDCFG_RX_ENA); | |
971 | ||
89830580 | 972 | csrwr32(value, priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
973 | } |
974 | ||
975 | /* Change the MTU | |
976 | */ | |
977 | static int tse_change_mtu(struct net_device *dev, int new_mtu) | |
978 | { | |
979 | struct altera_tse_private *priv = netdev_priv(dev); | |
980 | unsigned int max_mtu = priv->max_mtu; | |
981 | unsigned int min_mtu = ETH_ZLEN + ETH_FCS_LEN; | |
982 | ||
983 | if (netif_running(dev)) { | |
984 | netdev_err(dev, "must be stopped to change its MTU\n"); | |
985 | return -EBUSY; | |
986 | } | |
987 | ||
988 | if ((new_mtu < min_mtu) || (new_mtu > max_mtu)) { | |
989 | netdev_err(dev, "invalid MTU, max MTU is: %u\n", max_mtu); | |
990 | return -EINVAL; | |
991 | } | |
992 | ||
993 | dev->mtu = new_mtu; | |
994 | netdev_update_features(dev); | |
995 | ||
996 | return 0; | |
997 | } | |
998 | ||
999 | static void altera_tse_set_mcfilter(struct net_device *dev) | |
1000 | { | |
1001 | struct altera_tse_private *priv = netdev_priv(dev); | |
bbd2190c VB |
1002 | int i; |
1003 | struct netdev_hw_addr *ha; | |
1004 | ||
1005 | /* clear the hash filter */ | |
1006 | for (i = 0; i < 64; i++) | |
89830580 | 1007 | csrwr32(0, priv->mac_dev, tse_csroffs(hash_table) + i * 4); |
bbd2190c VB |
1008 | |
1009 | netdev_for_each_mc_addr(ha, dev) { | |
1010 | unsigned int hash = 0; | |
1011 | int mac_octet; | |
1012 | ||
1013 | for (mac_octet = 5; mac_octet >= 0; mac_octet--) { | |
1014 | unsigned char xor_bit = 0; | |
1015 | unsigned char octet = ha->addr[mac_octet]; | |
1016 | unsigned int bitshift; | |
1017 | ||
1018 | for (bitshift = 0; bitshift < 8; bitshift++) | |
1019 | xor_bit ^= ((octet >> bitshift) & 0x01); | |
1020 | ||
1021 | hash = (hash << 1) | xor_bit; | |
1022 | } | |
89830580 | 1023 | csrwr32(1, priv->mac_dev, tse_csroffs(hash_table) + hash * 4); |
bbd2190c VB |
1024 | } |
1025 | } | |
1026 | ||
1027 | ||
1028 | static void altera_tse_set_mcfilterall(struct net_device *dev) | |
1029 | { | |
1030 | struct altera_tse_private *priv = netdev_priv(dev); | |
bbd2190c VB |
1031 | int i; |
1032 | ||
1033 | /* set the hash filter */ | |
1034 | for (i = 0; i < 64; i++) | |
89830580 | 1035 | csrwr32(1, priv->mac_dev, tse_csroffs(hash_table) + i * 4); |
bbd2190c VB |
1036 | } |
1037 | ||
1038 | /* Set or clear the multicast filter for this adaptor | |
1039 | */ | |
1040 | static void tse_set_rx_mode_hashfilter(struct net_device *dev) | |
1041 | { | |
1042 | struct altera_tse_private *priv = netdev_priv(dev); | |
bbd2190c VB |
1043 | |
1044 | spin_lock(&priv->mac_cfg_lock); | |
1045 | ||
1046 | if (dev->flags & IFF_PROMISC) | |
89830580 VB |
1047 | tse_set_bit(priv->mac_dev, tse_csroffs(command_config), |
1048 | MAC_CMDCFG_PROMIS_EN); | |
bbd2190c VB |
1049 | |
1050 | if (dev->flags & IFF_ALLMULTI) | |
1051 | altera_tse_set_mcfilterall(dev); | |
1052 | else | |
1053 | altera_tse_set_mcfilter(dev); | |
1054 | ||
1055 | spin_unlock(&priv->mac_cfg_lock); | |
1056 | } | |
1057 | ||
1058 | /* Set or clear the multicast filter for this adaptor | |
1059 | */ | |
1060 | static void tse_set_rx_mode(struct net_device *dev) | |
1061 | { | |
1062 | struct altera_tse_private *priv = netdev_priv(dev); | |
bbd2190c VB |
1063 | |
1064 | spin_lock(&priv->mac_cfg_lock); | |
1065 | ||
1066 | if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) || | |
1067 | !netdev_mc_empty(dev) || !netdev_uc_empty(dev)) | |
89830580 VB |
1068 | tse_set_bit(priv->mac_dev, tse_csroffs(command_config), |
1069 | MAC_CMDCFG_PROMIS_EN); | |
bbd2190c | 1070 | else |
89830580 VB |
1071 | tse_clear_bit(priv->mac_dev, tse_csroffs(command_config), |
1072 | MAC_CMDCFG_PROMIS_EN); | |
bbd2190c VB |
1073 | |
1074 | spin_unlock(&priv->mac_cfg_lock); | |
1075 | } | |
1076 | ||
1077 | /* Open and initialize the interface | |
1078 | */ | |
1079 | static int tse_open(struct net_device *dev) | |
1080 | { | |
1081 | struct altera_tse_private *priv = netdev_priv(dev); | |
1082 | int ret = 0; | |
1083 | int i; | |
1084 | unsigned long int flags; | |
1085 | ||
1086 | /* Reset and configure TSE MAC and probe associated PHY */ | |
1087 | ret = priv->dmaops->init_dma(priv); | |
1088 | if (ret != 0) { | |
1089 | netdev_err(dev, "Cannot initialize DMA\n"); | |
1090 | goto phy_error; | |
1091 | } | |
1092 | ||
1093 | if (netif_msg_ifup(priv)) | |
1094 | netdev_warn(dev, "device MAC address %pM\n", | |
1095 | dev->dev_addr); | |
1096 | ||
1097 | if ((priv->revision < 0xd00) || (priv->revision > 0xe00)) | |
1098 | netdev_warn(dev, "TSE revision %x\n", priv->revision); | |
1099 | ||
1100 | spin_lock(&priv->mac_cfg_lock); | |
1101 | ret = reset_mac(priv); | |
1102 | if (ret) | |
1103 | netdev_err(dev, "Cannot reset MAC core (error: %d)\n", ret); | |
1104 | ||
1105 | ret = init_mac(priv); | |
1106 | spin_unlock(&priv->mac_cfg_lock); | |
1107 | if (ret) { | |
1108 | netdev_err(dev, "Cannot init MAC core (error: %d)\n", ret); | |
1109 | goto alloc_skbuf_error; | |
1110 | } | |
1111 | ||
1112 | priv->dmaops->reset_dma(priv); | |
1113 | ||
1114 | /* Create and initialize the TX/RX descriptors chains. */ | |
1115 | priv->rx_ring_size = dma_rx_num; | |
1116 | priv->tx_ring_size = dma_tx_num; | |
1117 | ret = alloc_init_skbufs(priv); | |
1118 | if (ret) { | |
1119 | netdev_err(dev, "DMA descriptors initialization failed\n"); | |
1120 | goto alloc_skbuf_error; | |
1121 | } | |
1122 | ||
1123 | ||
1124 | /* Register RX interrupt */ | |
1125 | ret = request_irq(priv->rx_irq, altera_isr, IRQF_SHARED, | |
1126 | dev->name, dev); | |
1127 | if (ret) { | |
1128 | netdev_err(dev, "Unable to register RX interrupt %d\n", | |
1129 | priv->rx_irq); | |
1130 | goto init_error; | |
1131 | } | |
1132 | ||
1133 | /* Register TX interrupt */ | |
1134 | ret = request_irq(priv->tx_irq, altera_isr, IRQF_SHARED, | |
1135 | dev->name, dev); | |
1136 | if (ret) { | |
1137 | netdev_err(dev, "Unable to register TX interrupt %d\n", | |
1138 | priv->tx_irq); | |
1139 | goto tx_request_irq_error; | |
1140 | } | |
1141 | ||
1142 | /* Enable DMA interrupts */ | |
1143 | spin_lock_irqsave(&priv->rxdma_irq_lock, flags); | |
1144 | priv->dmaops->enable_rxirq(priv); | |
1145 | priv->dmaops->enable_txirq(priv); | |
1146 | ||
1147 | /* Setup RX descriptor chain */ | |
1148 | for (i = 0; i < priv->rx_ring_size; i++) | |
1149 | priv->dmaops->add_rx_desc(priv, &priv->rx_ring[i]); | |
1150 | ||
1151 | spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); | |
1152 | ||
bbd2190c VB |
1153 | if (priv->phydev) |
1154 | phy_start(priv->phydev); | |
1155 | ||
1156 | napi_enable(&priv->napi); | |
1157 | netif_start_queue(dev); | |
1158 | ||
37c0ffaa VB |
1159 | priv->dmaops->start_rxdma(priv); |
1160 | ||
1161 | /* Start MAC Rx/Tx */ | |
1162 | spin_lock(&priv->mac_cfg_lock); | |
1163 | tse_set_mac(priv, true); | |
1164 | spin_unlock(&priv->mac_cfg_lock); | |
1165 | ||
bbd2190c VB |
1166 | return 0; |
1167 | ||
1168 | tx_request_irq_error: | |
1169 | free_irq(priv->rx_irq, dev); | |
1170 | init_error: | |
1171 | free_skbufs(dev); | |
1172 | alloc_skbuf_error: | |
bbd2190c VB |
1173 | phy_error: |
1174 | return ret; | |
1175 | } | |
1176 | ||
1177 | /* Stop TSE MAC interface and put the device in an inactive state | |
1178 | */ | |
1179 | static int tse_shutdown(struct net_device *dev) | |
1180 | { | |
1181 | struct altera_tse_private *priv = netdev_priv(dev); | |
1182 | int ret; | |
1183 | unsigned long int flags; | |
1184 | ||
c484994e KB |
1185 | /* Stop the PHY */ |
1186 | if (priv->phydev) | |
bbd2190c | 1187 | phy_stop(priv->phydev); |
bbd2190c VB |
1188 | |
1189 | netif_stop_queue(dev); | |
1190 | napi_disable(&priv->napi); | |
1191 | ||
1192 | /* Disable DMA interrupts */ | |
1193 | spin_lock_irqsave(&priv->rxdma_irq_lock, flags); | |
1194 | priv->dmaops->disable_rxirq(priv); | |
1195 | priv->dmaops->disable_txirq(priv); | |
1196 | spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); | |
1197 | ||
1198 | /* Free the IRQ lines */ | |
1199 | free_irq(priv->rx_irq, dev); | |
1200 | free_irq(priv->tx_irq, dev); | |
1201 | ||
1202 | /* disable and reset the MAC, empties fifo */ | |
1203 | spin_lock(&priv->mac_cfg_lock); | |
1204 | spin_lock(&priv->tx_lock); | |
1205 | ||
1206 | ret = reset_mac(priv); | |
1207 | if (ret) | |
1208 | netdev_err(dev, "Cannot reset MAC core (error: %d)\n", ret); | |
1209 | priv->dmaops->reset_dma(priv); | |
1210 | free_skbufs(dev); | |
1211 | ||
1212 | spin_unlock(&priv->tx_lock); | |
1213 | spin_unlock(&priv->mac_cfg_lock); | |
1214 | ||
1215 | priv->dmaops->uninit_dma(priv); | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | static struct net_device_ops altera_tse_netdev_ops = { | |
1221 | .ndo_open = tse_open, | |
1222 | .ndo_stop = tse_shutdown, | |
1223 | .ndo_start_xmit = tse_start_xmit, | |
1224 | .ndo_set_mac_address = eth_mac_addr, | |
1225 | .ndo_set_rx_mode = tse_set_rx_mode, | |
1226 | .ndo_change_mtu = tse_change_mtu, | |
1227 | .ndo_validate_addr = eth_validate_addr, | |
1228 | }; | |
1229 | ||
bbd2190c VB |
1230 | static int request_and_map(struct platform_device *pdev, const char *name, |
1231 | struct resource **res, void __iomem **ptr) | |
1232 | { | |
1233 | struct resource *region; | |
1234 | struct device *device = &pdev->dev; | |
1235 | ||
1236 | *res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); | |
1237 | if (*res == NULL) { | |
1238 | dev_err(device, "resource %s not defined\n", name); | |
1239 | return -ENODEV; | |
1240 | } | |
1241 | ||
1242 | region = devm_request_mem_region(device, (*res)->start, | |
1243 | resource_size(*res), dev_name(device)); | |
1244 | if (region == NULL) { | |
1245 | dev_err(device, "unable to request %s\n", name); | |
1246 | return -EBUSY; | |
1247 | } | |
1248 | ||
1249 | *ptr = devm_ioremap_nocache(device, region->start, | |
1250 | resource_size(region)); | |
1251 | if (*ptr == NULL) { | |
1252 | dev_err(device, "ioremap_nocache of %s failed!", name); | |
1253 | return -ENOMEM; | |
1254 | } | |
1255 | ||
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | /* Probe Altera TSE MAC device | |
1260 | */ | |
1261 | static int altera_tse_probe(struct platform_device *pdev) | |
1262 | { | |
1263 | struct net_device *ndev; | |
1264 | int ret = -ENODEV; | |
1265 | struct resource *control_port; | |
1266 | struct resource *dma_res; | |
1267 | struct altera_tse_private *priv; | |
1268 | const unsigned char *macaddr; | |
bbd2190c VB |
1269 | void __iomem *descmap; |
1270 | const struct of_device_id *of_id = NULL; | |
1271 | ||
1272 | ndev = alloc_etherdev(sizeof(struct altera_tse_private)); | |
1273 | if (!ndev) { | |
1274 | dev_err(&pdev->dev, "Could not allocate network device\n"); | |
1275 | return -ENODEV; | |
1276 | } | |
1277 | ||
1278 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
1279 | ||
1280 | priv = netdev_priv(ndev); | |
1281 | priv->device = &pdev->dev; | |
1282 | priv->dev = ndev; | |
1283 | priv->msg_enable = netif_msg_init(debug, default_msg_level); | |
1284 | ||
1285 | of_id = of_match_device(altera_tse_ids, &pdev->dev); | |
1286 | ||
1287 | if (of_id) | |
1288 | priv->dmaops = (struct altera_dmaops *)of_id->data; | |
1289 | ||
1290 | ||
1291 | if (priv->dmaops && | |
1292 | priv->dmaops->altera_dtype == ALTERA_DTYPE_SGDMA) { | |
1293 | /* Get the mapped address to the SGDMA descriptor memory */ | |
1294 | ret = request_and_map(pdev, "s1", &dma_res, &descmap); | |
1295 | if (ret) | |
a7642009 | 1296 | goto err_free_netdev; |
bbd2190c VB |
1297 | |
1298 | /* Start of that memory is for transmit descriptors */ | |
1299 | priv->tx_dma_desc = descmap; | |
1300 | ||
1301 | /* First half is for tx descriptors, other half for tx */ | |
1302 | priv->txdescmem = resource_size(dma_res)/2; | |
1303 | ||
1304 | priv->txdescmem_busaddr = (dma_addr_t)dma_res->start; | |
1305 | ||
1306 | priv->rx_dma_desc = (void __iomem *)((uintptr_t)(descmap + | |
1307 | priv->txdescmem)); | |
1308 | priv->rxdescmem = resource_size(dma_res)/2; | |
1309 | priv->rxdescmem_busaddr = dma_res->start; | |
1310 | priv->rxdescmem_busaddr += priv->txdescmem; | |
1311 | ||
1312 | if (upper_32_bits(priv->rxdescmem_busaddr)) { | |
1313 | dev_dbg(priv->device, | |
1314 | "SGDMA bus addresses greater than 32-bits\n"); | |
a7642009 | 1315 | goto err_free_netdev; |
bbd2190c VB |
1316 | } |
1317 | if (upper_32_bits(priv->txdescmem_busaddr)) { | |
1318 | dev_dbg(priv->device, | |
1319 | "SGDMA bus addresses greater than 32-bits\n"); | |
a7642009 | 1320 | goto err_free_netdev; |
bbd2190c VB |
1321 | } |
1322 | } else if (priv->dmaops && | |
1323 | priv->dmaops->altera_dtype == ALTERA_DTYPE_MSGDMA) { | |
1324 | ret = request_and_map(pdev, "rx_resp", &dma_res, | |
1325 | &priv->rx_dma_resp); | |
1326 | if (ret) | |
a7642009 | 1327 | goto err_free_netdev; |
bbd2190c VB |
1328 | |
1329 | ret = request_and_map(pdev, "tx_desc", &dma_res, | |
1330 | &priv->tx_dma_desc); | |
1331 | if (ret) | |
a7642009 | 1332 | goto err_free_netdev; |
bbd2190c VB |
1333 | |
1334 | priv->txdescmem = resource_size(dma_res); | |
1335 | priv->txdescmem_busaddr = dma_res->start; | |
1336 | ||
1337 | ret = request_and_map(pdev, "rx_desc", &dma_res, | |
1338 | &priv->rx_dma_desc); | |
1339 | if (ret) | |
a7642009 | 1340 | goto err_free_netdev; |
bbd2190c VB |
1341 | |
1342 | priv->rxdescmem = resource_size(dma_res); | |
1343 | priv->rxdescmem_busaddr = dma_res->start; | |
1344 | ||
1345 | } else { | |
a7642009 | 1346 | goto err_free_netdev; |
bbd2190c VB |
1347 | } |
1348 | ||
1349 | if (!dma_set_mask(priv->device, DMA_BIT_MASK(priv->dmaops->dmamask))) | |
1350 | dma_set_coherent_mask(priv->device, | |
1351 | DMA_BIT_MASK(priv->dmaops->dmamask)); | |
1352 | else if (!dma_set_mask(priv->device, DMA_BIT_MASK(32))) | |
1353 | dma_set_coherent_mask(priv->device, DMA_BIT_MASK(32)); | |
1354 | else | |
a7642009 | 1355 | goto err_free_netdev; |
bbd2190c VB |
1356 | |
1357 | /* MAC address space */ | |
1358 | ret = request_and_map(pdev, "control_port", &control_port, | |
1359 | (void __iomem **)&priv->mac_dev); | |
1360 | if (ret) | |
a7642009 | 1361 | goto err_free_netdev; |
bbd2190c VB |
1362 | |
1363 | /* xSGDMA Rx Dispatcher address space */ | |
1364 | ret = request_and_map(pdev, "rx_csr", &dma_res, | |
1365 | &priv->rx_dma_csr); | |
1366 | if (ret) | |
a7642009 | 1367 | goto err_free_netdev; |
bbd2190c VB |
1368 | |
1369 | ||
1370 | /* xSGDMA Tx Dispatcher address space */ | |
1371 | ret = request_and_map(pdev, "tx_csr", &dma_res, | |
1372 | &priv->tx_dma_csr); | |
1373 | if (ret) | |
a7642009 | 1374 | goto err_free_netdev; |
bbd2190c VB |
1375 | |
1376 | ||
1377 | /* Rx IRQ */ | |
1378 | priv->rx_irq = platform_get_irq_byname(pdev, "rx_irq"); | |
1379 | if (priv->rx_irq == -ENXIO) { | |
1380 | dev_err(&pdev->dev, "cannot obtain Rx IRQ\n"); | |
1381 | ret = -ENXIO; | |
a7642009 | 1382 | goto err_free_netdev; |
bbd2190c VB |
1383 | } |
1384 | ||
1385 | /* Tx IRQ */ | |
1386 | priv->tx_irq = platform_get_irq_byname(pdev, "tx_irq"); | |
1387 | if (priv->tx_irq == -ENXIO) { | |
1388 | dev_err(&pdev->dev, "cannot obtain Tx IRQ\n"); | |
1389 | ret = -ENXIO; | |
a7642009 | 1390 | goto err_free_netdev; |
bbd2190c VB |
1391 | } |
1392 | ||
1393 | /* get FIFO depths from device tree */ | |
1394 | if (of_property_read_u32(pdev->dev.of_node, "rx-fifo-depth", | |
1395 | &priv->rx_fifo_depth)) { | |
1396 | dev_err(&pdev->dev, "cannot obtain rx-fifo-depth\n"); | |
1397 | ret = -ENXIO; | |
a7642009 | 1398 | goto err_free_netdev; |
bbd2190c VB |
1399 | } |
1400 | ||
1401 | if (of_property_read_u32(pdev->dev.of_node, "tx-fifo-depth", | |
1402 | &priv->rx_fifo_depth)) { | |
1403 | dev_err(&pdev->dev, "cannot obtain tx-fifo-depth\n"); | |
1404 | ret = -ENXIO; | |
a7642009 | 1405 | goto err_free_netdev; |
bbd2190c VB |
1406 | } |
1407 | ||
1408 | /* get hash filter settings for this instance */ | |
1409 | priv->hash_filter = | |
1410 | of_property_read_bool(pdev->dev.of_node, | |
1411 | "altr,has-hash-multicast-filter"); | |
1412 | ||
d91e5c02 VB |
1413 | /* Set hash filter to not set for now until the |
1414 | * multicast filter receive issue is debugged | |
1415 | */ | |
1416 | priv->hash_filter = 0; | |
1417 | ||
bbd2190c VB |
1418 | /* get supplemental address settings for this instance */ |
1419 | priv->added_unicast = | |
1420 | of_property_read_bool(pdev->dev.of_node, | |
1421 | "altr,has-supplementary-unicast"); | |
1422 | ||
1423 | /* Max MTU is 1500, ETH_DATA_LEN */ | |
1424 | priv->max_mtu = ETH_DATA_LEN; | |
1425 | ||
1426 | /* Get the max mtu from the device tree. Note that the | |
1427 | * "max-frame-size" parameter is actually max mtu. Definition | |
1428 | * in the ePAPR v1.1 spec and usage differ, so go with usage. | |
1429 | */ | |
1430 | of_property_read_u32(pdev->dev.of_node, "max-frame-size", | |
1431 | &priv->max_mtu); | |
1432 | ||
1433 | /* The DMA buffer size already accounts for an alignment bias | |
1434 | * to avoid unaligned access exceptions for the NIOS processor, | |
1435 | */ | |
1436 | priv->rx_dma_buf_sz = ALTERA_RXDMABUFFER_SIZE; | |
1437 | ||
1438 | /* get default MAC address from device tree */ | |
1439 | macaddr = of_get_mac_address(pdev->dev.of_node); | |
1440 | if (macaddr) | |
1441 | ether_addr_copy(ndev->dev_addr, macaddr); | |
1442 | else | |
1443 | eth_hw_addr_random(ndev); | |
1444 | ||
004fa118 WL |
1445 | /* get phy addr and create mdio */ |
1446 | ret = altera_tse_phy_get_addr_mdio_create(ndev); | |
bbd2190c VB |
1447 | |
1448 | if (ret) | |
a7642009 | 1449 | goto err_free_netdev; |
bbd2190c VB |
1450 | |
1451 | /* initialize netdev */ | |
bbd2190c VB |
1452 | ndev->mem_start = control_port->start; |
1453 | ndev->mem_end = control_port->end; | |
1454 | ndev->netdev_ops = &altera_tse_netdev_ops; | |
1455 | altera_tse_set_ethtool_ops(ndev); | |
1456 | ||
1457 | altera_tse_netdev_ops.ndo_set_rx_mode = tse_set_rx_mode; | |
1458 | ||
1459 | if (priv->hash_filter) | |
1460 | altera_tse_netdev_ops.ndo_set_rx_mode = | |
1461 | tse_set_rx_mode_hashfilter; | |
1462 | ||
1463 | /* Scatter/gather IO is not supported, | |
1464 | * so it is turned off | |
1465 | */ | |
1466 | ndev->hw_features &= ~NETIF_F_SG; | |
1467 | ndev->features |= ndev->hw_features | NETIF_F_HIGHDMA; | |
1468 | ||
1469 | /* VLAN offloading of tagging, stripping and filtering is not | |
1470 | * supported by hardware, but driver will accommodate the | |
1471 | * extra 4-byte VLAN tag for processing by upper layers | |
1472 | */ | |
1473 | ndev->features |= NETIF_F_HW_VLAN_CTAG_RX; | |
1474 | ||
1475 | /* setup NAPI interface */ | |
1476 | netif_napi_add(ndev, &priv->napi, tse_poll, NAPI_POLL_WEIGHT); | |
1477 | ||
1478 | spin_lock_init(&priv->mac_cfg_lock); | |
1479 | spin_lock_init(&priv->tx_lock); | |
1480 | spin_lock_init(&priv->rxdma_irq_lock); | |
1481 | ||
1482 | ret = register_netdev(ndev); | |
1483 | if (ret) { | |
1484 | dev_err(&pdev->dev, "failed to register TSE net device\n"); | |
a7642009 | 1485 | goto err_register_netdev; |
bbd2190c VB |
1486 | } |
1487 | ||
1488 | platform_set_drvdata(pdev, ndev); | |
1489 | ||
1490 | priv->revision = ioread32(&priv->mac_dev->megacore_revision); | |
1491 | ||
1492 | if (netif_msg_probe(priv)) | |
1493 | dev_info(&pdev->dev, "Altera TSE MAC version %d.%d at 0x%08lx irq %d/%d\n", | |
1494 | (priv->revision >> 8) & 0xff, | |
1495 | priv->revision & 0xff, | |
1496 | (unsigned long) control_port->start, priv->rx_irq, | |
1497 | priv->tx_irq); | |
1498 | ||
1499 | ret = init_phy(ndev); | |
1500 | if (ret != 0) { | |
1501 | netdev_err(ndev, "Cannot attach to PHY (error: %d)\n", ret); | |
a7642009 | 1502 | goto err_init_phy; |
bbd2190c VB |
1503 | } |
1504 | return 0; | |
1505 | ||
a7642009 VB |
1506 | err_init_phy: |
1507 | unregister_netdev(ndev); | |
1508 | err_register_netdev: | |
1509 | netif_napi_del(&priv->napi); | |
bbd2190c | 1510 | altera_tse_mdio_destroy(ndev); |
a7642009 | 1511 | err_free_netdev: |
bbd2190c VB |
1512 | free_netdev(ndev); |
1513 | return ret; | |
1514 | } | |
1515 | ||
1516 | /* Remove Altera TSE MAC device | |
1517 | */ | |
1518 | static int altera_tse_remove(struct platform_device *pdev) | |
1519 | { | |
1520 | struct net_device *ndev = platform_get_drvdata(pdev); | |
c484994e KB |
1521 | struct altera_tse_private *priv = netdev_priv(ndev); |
1522 | ||
1523 | if (priv->phydev) | |
1524 | phy_disconnect(priv->phydev); | |
bbd2190c VB |
1525 | |
1526 | platform_set_drvdata(pdev, NULL); | |
1527 | altera_tse_mdio_destroy(ndev); | |
1528 | unregister_netdev(ndev); | |
1529 | free_netdev(ndev); | |
1530 | ||
1531 | return 0; | |
1532 | } | |
1533 | ||
89830580 | 1534 | static const struct altera_dmaops altera_dtype_sgdma = { |
bbd2190c VB |
1535 | .altera_dtype = ALTERA_DTYPE_SGDMA, |
1536 | .dmamask = 32, | |
1537 | .reset_dma = sgdma_reset, | |
1538 | .enable_txirq = sgdma_enable_txirq, | |
1539 | .enable_rxirq = sgdma_enable_rxirq, | |
1540 | .disable_txirq = sgdma_disable_txirq, | |
1541 | .disable_rxirq = sgdma_disable_rxirq, | |
1542 | .clear_txirq = sgdma_clear_txirq, | |
1543 | .clear_rxirq = sgdma_clear_rxirq, | |
1544 | .tx_buffer = sgdma_tx_buffer, | |
1545 | .tx_completions = sgdma_tx_completions, | |
1546 | .add_rx_desc = sgdma_add_rx_desc, | |
1547 | .get_rx_status = sgdma_rx_status, | |
1548 | .init_dma = sgdma_initialize, | |
1549 | .uninit_dma = sgdma_uninitialize, | |
37c0ffaa | 1550 | .start_rxdma = sgdma_start_rxdma, |
bbd2190c VB |
1551 | }; |
1552 | ||
89830580 | 1553 | static const struct altera_dmaops altera_dtype_msgdma = { |
bbd2190c VB |
1554 | .altera_dtype = ALTERA_DTYPE_MSGDMA, |
1555 | .dmamask = 64, | |
1556 | .reset_dma = msgdma_reset, | |
1557 | .enable_txirq = msgdma_enable_txirq, | |
1558 | .enable_rxirq = msgdma_enable_rxirq, | |
1559 | .disable_txirq = msgdma_disable_txirq, | |
1560 | .disable_rxirq = msgdma_disable_rxirq, | |
1561 | .clear_txirq = msgdma_clear_txirq, | |
1562 | .clear_rxirq = msgdma_clear_rxirq, | |
1563 | .tx_buffer = msgdma_tx_buffer, | |
1564 | .tx_completions = msgdma_tx_completions, | |
1565 | .add_rx_desc = msgdma_add_rx_desc, | |
1566 | .get_rx_status = msgdma_rx_status, | |
1567 | .init_dma = msgdma_initialize, | |
1568 | .uninit_dma = msgdma_uninitialize, | |
37c0ffaa | 1569 | .start_rxdma = msgdma_start_rxdma, |
bbd2190c VB |
1570 | }; |
1571 | ||
1572 | static struct of_device_id altera_tse_ids[] = { | |
1573 | { .compatible = "altr,tse-msgdma-1.0", .data = &altera_dtype_msgdma, }, | |
1574 | { .compatible = "altr,tse-1.0", .data = &altera_dtype_sgdma, }, | |
1575 | { .compatible = "ALTR,tse-1.0", .data = &altera_dtype_sgdma, }, | |
1576 | {}, | |
1577 | }; | |
1578 | MODULE_DEVICE_TABLE(of, altera_tse_ids); | |
1579 | ||
1580 | static struct platform_driver altera_tse_driver = { | |
1581 | .probe = altera_tse_probe, | |
1582 | .remove = altera_tse_remove, | |
1583 | .suspend = NULL, | |
1584 | .resume = NULL, | |
1585 | .driver = { | |
1586 | .name = ALTERA_TSE_RESOURCE_NAME, | |
bbd2190c VB |
1587 | .of_match_table = altera_tse_ids, |
1588 | }, | |
1589 | }; | |
1590 | ||
1591 | module_platform_driver(altera_tse_driver); | |
1592 | ||
1593 | MODULE_AUTHOR("Altera Corporation"); | |
1594 | MODULE_DESCRIPTION("Altera Triple Speed Ethernet MAC driver"); | |
1595 | MODULE_LICENSE("GPL v2"); |