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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 | ||
27260530 | 92 | static const struct of_device_id altera_tse_ids[]; |
bbd2190c VB |
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 | 107 | csrwr32((mii_id & 0x1f), priv->mac_dev, |
a923fc73 | 108 | tse_csroffs(mdio_phy1_addr)); |
bbd2190c VB |
109 | |
110 | /* get the data */ | |
89830580 | 111 | return csrrd32(priv->mac_dev, |
a923fc73 | 112 | tse_csroffs(mdio_phy1) + 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 | 122 | csrwr32((mii_id & 0x1f), priv->mac_dev, |
a923fc73 | 123 | tse_csroffs(mdio_phy1_addr)); |
bbd2190c VB |
124 | |
125 | /* write the data */ | |
a923fc73 | 126 | csrwr32(value, priv->mac_dev, tse_csroffs(mdio_phy1) + 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; | |
bbd2190c VB |
134 | struct device_node *mdio_node = NULL; |
135 | struct mii_bus *mdio = NULL; | |
136 | struct device_node *child_node = NULL; | |
137 | ||
138 | for_each_child_of_node(priv->device->of_node, child_node) { | |
139 | if (of_device_is_compatible(child_node, "altr,tse-mdio")) { | |
140 | mdio_node = child_node; | |
141 | break; | |
142 | } | |
143 | } | |
144 | ||
145 | if (mdio_node) { | |
146 | netdev_dbg(dev, "FOUND MDIO subnode\n"); | |
147 | } else { | |
148 | netdev_dbg(dev, "NO MDIO subnode\n"); | |
149 | return 0; | |
150 | } | |
151 | ||
152 | mdio = mdiobus_alloc(); | |
153 | if (mdio == NULL) { | |
154 | netdev_err(dev, "Error allocating MDIO bus\n"); | |
155 | return -ENOMEM; | |
156 | } | |
157 | ||
158 | mdio->name = ALTERA_TSE_RESOURCE_NAME; | |
159 | mdio->read = &altera_tse_mdio_read; | |
160 | mdio->write = &altera_tse_mdio_write; | |
161 | snprintf(mdio->id, MII_BUS_ID_SIZE, "%s-%u", mdio->name, id); | |
162 | ||
89830580 | 163 | mdio->priv = dev; |
bbd2190c VB |
164 | mdio->parent = priv->device; |
165 | ||
166 | ret = of_mdiobus_register(mdio, mdio_node); | |
167 | if (ret != 0) { | |
168 | netdev_err(dev, "Cannot register MDIO bus %s\n", | |
169 | mdio->id); | |
e7f4dc35 | 170 | goto out_free_mdio; |
bbd2190c VB |
171 | } |
172 | ||
173 | if (netif_msg_drv(priv)) | |
174 | netdev_info(dev, "MDIO bus %s: created\n", mdio->id); | |
175 | ||
176 | priv->mdio = mdio; | |
177 | return 0; | |
bbd2190c VB |
178 | out_free_mdio: |
179 | mdiobus_free(mdio); | |
180 | mdio = NULL; | |
181 | return ret; | |
182 | } | |
183 | ||
184 | static void altera_tse_mdio_destroy(struct net_device *dev) | |
185 | { | |
186 | struct altera_tse_private *priv = netdev_priv(dev); | |
187 | ||
188 | if (priv->mdio == NULL) | |
189 | return; | |
190 | ||
191 | if (netif_msg_drv(priv)) | |
192 | netdev_info(dev, "MDIO bus %s: removed\n", | |
193 | priv->mdio->id); | |
194 | ||
195 | mdiobus_unregister(priv->mdio); | |
bbd2190c VB |
196 | mdiobus_free(priv->mdio); |
197 | priv->mdio = NULL; | |
198 | } | |
199 | ||
200 | static int tse_init_rx_buffer(struct altera_tse_private *priv, | |
201 | struct tse_buffer *rxbuffer, int len) | |
202 | { | |
203 | rxbuffer->skb = netdev_alloc_skb_ip_align(priv->dev, len); | |
204 | if (!rxbuffer->skb) | |
205 | return -ENOMEM; | |
206 | ||
207 | rxbuffer->dma_addr = dma_map_single(priv->device, rxbuffer->skb->data, | |
208 | len, | |
209 | DMA_FROM_DEVICE); | |
210 | ||
211 | if (dma_mapping_error(priv->device, rxbuffer->dma_addr)) { | |
212 | netdev_err(priv->dev, "%s: DMA mapping error\n", __func__); | |
213 | dev_kfree_skb_any(rxbuffer->skb); | |
214 | return -EINVAL; | |
215 | } | |
37c0ffaa | 216 | rxbuffer->dma_addr &= (dma_addr_t)~3; |
bbd2190c VB |
217 | rxbuffer->len = len; |
218 | return 0; | |
219 | } | |
220 | ||
221 | static void tse_free_rx_buffer(struct altera_tse_private *priv, | |
222 | struct tse_buffer *rxbuffer) | |
223 | { | |
224 | struct sk_buff *skb = rxbuffer->skb; | |
225 | dma_addr_t dma_addr = rxbuffer->dma_addr; | |
226 | ||
227 | if (skb != NULL) { | |
228 | if (dma_addr) | |
229 | dma_unmap_single(priv->device, dma_addr, | |
230 | rxbuffer->len, | |
231 | DMA_FROM_DEVICE); | |
232 | dev_kfree_skb_any(skb); | |
233 | rxbuffer->skb = NULL; | |
234 | rxbuffer->dma_addr = 0; | |
235 | } | |
236 | } | |
237 | ||
238 | /* Unmap and free Tx buffer resources | |
239 | */ | |
240 | static void tse_free_tx_buffer(struct altera_tse_private *priv, | |
241 | struct tse_buffer *buffer) | |
242 | { | |
243 | if (buffer->dma_addr) { | |
244 | if (buffer->mapped_as_page) | |
245 | dma_unmap_page(priv->device, buffer->dma_addr, | |
246 | buffer->len, DMA_TO_DEVICE); | |
247 | else | |
248 | dma_unmap_single(priv->device, buffer->dma_addr, | |
249 | buffer->len, DMA_TO_DEVICE); | |
250 | buffer->dma_addr = 0; | |
251 | } | |
252 | if (buffer->skb) { | |
253 | dev_kfree_skb_any(buffer->skb); | |
254 | buffer->skb = NULL; | |
255 | } | |
256 | } | |
257 | ||
258 | static int alloc_init_skbufs(struct altera_tse_private *priv) | |
259 | { | |
260 | unsigned int rx_descs = priv->rx_ring_size; | |
261 | unsigned int tx_descs = priv->tx_ring_size; | |
262 | int ret = -ENOMEM; | |
263 | int i; | |
264 | ||
265 | /* Create Rx ring buffer */ | |
266 | priv->rx_ring = kcalloc(rx_descs, sizeof(struct tse_buffer), | |
267 | GFP_KERNEL); | |
268 | if (!priv->rx_ring) | |
269 | goto err_rx_ring; | |
270 | ||
271 | /* Create Tx ring buffer */ | |
272 | priv->tx_ring = kcalloc(tx_descs, sizeof(struct tse_buffer), | |
273 | GFP_KERNEL); | |
274 | if (!priv->tx_ring) | |
275 | goto err_tx_ring; | |
276 | ||
277 | priv->tx_cons = 0; | |
278 | priv->tx_prod = 0; | |
279 | ||
280 | /* Init Rx ring */ | |
281 | for (i = 0; i < rx_descs; i++) { | |
282 | ret = tse_init_rx_buffer(priv, &priv->rx_ring[i], | |
283 | priv->rx_dma_buf_sz); | |
284 | if (ret) | |
285 | goto err_init_rx_buffers; | |
286 | } | |
287 | ||
288 | priv->rx_cons = 0; | |
289 | priv->rx_prod = 0; | |
290 | ||
291 | return 0; | |
292 | err_init_rx_buffers: | |
293 | while (--i >= 0) | |
294 | tse_free_rx_buffer(priv, &priv->rx_ring[i]); | |
295 | kfree(priv->tx_ring); | |
296 | err_tx_ring: | |
297 | kfree(priv->rx_ring); | |
298 | err_rx_ring: | |
299 | return ret; | |
300 | } | |
301 | ||
302 | static void free_skbufs(struct net_device *dev) | |
303 | { | |
304 | struct altera_tse_private *priv = netdev_priv(dev); | |
305 | unsigned int rx_descs = priv->rx_ring_size; | |
306 | unsigned int tx_descs = priv->tx_ring_size; | |
307 | int i; | |
308 | ||
309 | /* Release the DMA TX/RX socket buffers */ | |
310 | for (i = 0; i < rx_descs; i++) | |
311 | tse_free_rx_buffer(priv, &priv->rx_ring[i]); | |
312 | for (i = 0; i < tx_descs; i++) | |
313 | tse_free_tx_buffer(priv, &priv->tx_ring[i]); | |
314 | ||
315 | ||
316 | kfree(priv->tx_ring); | |
317 | } | |
318 | ||
319 | /* Reallocate the skb for the reception process | |
320 | */ | |
321 | static inline void tse_rx_refill(struct altera_tse_private *priv) | |
322 | { | |
323 | unsigned int rxsize = priv->rx_ring_size; | |
324 | unsigned int entry; | |
325 | int ret; | |
326 | ||
327 | for (; priv->rx_cons - priv->rx_prod > 0; | |
328 | priv->rx_prod++) { | |
329 | entry = priv->rx_prod % rxsize; | |
330 | if (likely(priv->rx_ring[entry].skb == NULL)) { | |
331 | ret = tse_init_rx_buffer(priv, &priv->rx_ring[entry], | |
332 | priv->rx_dma_buf_sz); | |
333 | if (unlikely(ret != 0)) | |
334 | break; | |
335 | priv->dmaops->add_rx_desc(priv, &priv->rx_ring[entry]); | |
336 | } | |
337 | } | |
338 | } | |
339 | ||
340 | /* Pull out the VLAN tag and fix up the packet | |
341 | */ | |
342 | static inline void tse_rx_vlan(struct net_device *dev, struct sk_buff *skb) | |
343 | { | |
344 | struct ethhdr *eth_hdr; | |
345 | u16 vid; | |
346 | if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && | |
347 | !__vlan_get_tag(skb, &vid)) { | |
348 | eth_hdr = (struct ethhdr *)skb->data; | |
349 | memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2); | |
350 | skb_pull(skb, VLAN_HLEN); | |
351 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); | |
352 | } | |
353 | } | |
354 | ||
355 | /* Receive a packet: retrieve and pass over to upper levels | |
356 | */ | |
357 | static int tse_rx(struct altera_tse_private *priv, int limit) | |
358 | { | |
359 | unsigned int count = 0; | |
360 | unsigned int next_entry; | |
361 | struct sk_buff *skb; | |
362 | unsigned int entry = priv->rx_cons % priv->rx_ring_size; | |
363 | u32 rxstatus; | |
364 | u16 pktlength; | |
365 | u16 pktstatus; | |
366 | ||
93ea3378 AO |
367 | /* Check for count < limit first as get_rx_status is changing |
368 | * the response-fifo so we must process the next packet | |
369 | * after calling get_rx_status if a response is pending. | |
370 | * (reading the last byte of the response pops the value from the fifo.) | |
371 | */ | |
372 | while ((count < limit) && | |
373 | ((rxstatus = priv->dmaops->get_rx_status(priv)) != 0)) { | |
bbd2190c VB |
374 | pktstatus = rxstatus >> 16; |
375 | pktlength = rxstatus & 0xffff; | |
376 | ||
377 | if ((pktstatus & 0xFF) || (pktlength == 0)) | |
378 | netdev_err(priv->dev, | |
379 | "RCV pktstatus %08X pktlength %08X\n", | |
380 | pktstatus, pktlength); | |
381 | ||
48734994 VS |
382 | /* DMA trasfer from TSE starts with 2 aditional bytes for |
383 | * IP payload alignment. Status returned by get_rx_status() | |
384 | * contains DMA transfer length. Packet is 2 bytes shorter. | |
385 | */ | |
386 | pktlength -= 2; | |
387 | ||
bbd2190c VB |
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; | |
bbd2190c VB |
494 | unsigned long int flags; |
495 | ||
8d4ac39d | 496 | tse_tx_complete(priv); |
bbd2190c VB |
497 | |
498 | rxcomplete = tse_rx(priv, budget); | |
499 | ||
8d4ac39d | 500 | if (rxcomplete < budget) { |
bbd2190c | 501 | |
4548a697 | 502 | napi_complete(napi); |
bbd2190c | 503 | |
8d4ac39d VS |
504 | netdev_dbg(priv->dev, |
505 | "NAPI Complete, did %d packets with budget %d\n", | |
506 | rxcomplete, budget); | |
bbd2190c | 507 | |
8d4ac39d VS |
508 | spin_lock_irqsave(&priv->rxdma_irq_lock, flags); |
509 | priv->dmaops->enable_rxirq(priv); | |
510 | priv->dmaops->enable_txirq(priv); | |
511 | spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); | |
512 | } | |
513 | return rxcomplete; | |
bbd2190c VB |
514 | } |
515 | ||
516 | /* DMA TX & RX FIFO interrupt routing | |
517 | */ | |
518 | static irqreturn_t altera_isr(int irq, void *dev_id) | |
519 | { | |
520 | struct net_device *dev = dev_id; | |
521 | struct altera_tse_private *priv; | |
bbd2190c | 522 | |
bbd2190c VB |
523 | if (unlikely(!dev)) { |
524 | pr_err("%s: invalid dev pointer\n", __func__); | |
525 | return IRQ_NONE; | |
526 | } | |
527 | priv = netdev_priv(dev); | |
528 | ||
8d4ac39d VS |
529 | spin_lock(&priv->rxdma_irq_lock); |
530 | /* reset IRQs */ | |
531 | priv->dmaops->clear_rxirq(priv); | |
532 | priv->dmaops->clear_txirq(priv); | |
533 | spin_unlock(&priv->rxdma_irq_lock); | |
bbd2190c VB |
534 | |
535 | if (likely(napi_schedule_prep(&priv->napi))) { | |
8d4ac39d | 536 | spin_lock(&priv->rxdma_irq_lock); |
bbd2190c VB |
537 | priv->dmaops->disable_rxirq(priv); |
538 | priv->dmaops->disable_txirq(priv); | |
8d4ac39d | 539 | spin_unlock(&priv->rxdma_irq_lock); |
bbd2190c VB |
540 | __napi_schedule(&priv->napi); |
541 | } | |
542 | ||
bbd2190c VB |
543 | |
544 | return IRQ_HANDLED; | |
545 | } | |
546 | ||
547 | /* Transmit a packet (called by the kernel). Dispatches | |
548 | * either the SGDMA method for transmitting or the | |
549 | * MSGDMA method, assumes no scatter/gather support, | |
550 | * implying an assumption that there's only one | |
551 | * physically contiguous fragment starting at | |
552 | * skb->data, for length of skb_headlen(skb). | |
553 | */ | |
554 | static int tse_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
555 | { | |
556 | struct altera_tse_private *priv = netdev_priv(dev); | |
557 | unsigned int txsize = priv->tx_ring_size; | |
558 | unsigned int entry; | |
559 | struct tse_buffer *buffer = NULL; | |
560 | int nfrags = skb_shinfo(skb)->nr_frags; | |
561 | unsigned int nopaged_len = skb_headlen(skb); | |
562 | enum netdev_tx ret = NETDEV_TX_OK; | |
563 | dma_addr_t dma_addr; | |
bbd2190c VB |
564 | |
565 | spin_lock_bh(&priv->tx_lock); | |
566 | ||
567 | if (unlikely(tse_tx_avail(priv) < nfrags + 1)) { | |
568 | if (!netif_queue_stopped(dev)) { | |
569 | netif_stop_queue(dev); | |
570 | /* This is a hard error, log it. */ | |
571 | netdev_err(priv->dev, | |
572 | "%s: Tx list full when queue awake\n", | |
573 | __func__); | |
574 | } | |
575 | ret = NETDEV_TX_BUSY; | |
576 | goto out; | |
577 | } | |
578 | ||
579 | /* Map the first skb fragment */ | |
580 | entry = priv->tx_prod % txsize; | |
581 | buffer = &priv->tx_ring[entry]; | |
582 | ||
583 | dma_addr = dma_map_single(priv->device, skb->data, nopaged_len, | |
584 | DMA_TO_DEVICE); | |
585 | if (dma_mapping_error(priv->device, dma_addr)) { | |
586 | netdev_err(priv->dev, "%s: DMA mapping error\n", __func__); | |
587 | ret = NETDEV_TX_OK; | |
588 | goto out; | |
589 | } | |
590 | ||
591 | buffer->skb = skb; | |
592 | buffer->dma_addr = dma_addr; | |
593 | buffer->len = nopaged_len; | |
594 | ||
595 | /* Push data out of the cache hierarchy into main memory */ | |
596 | dma_sync_single_for_device(priv->device, buffer->dma_addr, | |
597 | buffer->len, DMA_TO_DEVICE); | |
598 | ||
89830580 | 599 | priv->dmaops->tx_buffer(priv, buffer); |
bbd2190c VB |
600 | |
601 | skb_tx_timestamp(skb); | |
602 | ||
603 | priv->tx_prod++; | |
604 | dev->stats.tx_bytes += skb->len; | |
605 | ||
606 | if (unlikely(tse_tx_avail(priv) <= TXQUEUESTOP_THRESHHOLD)) { | |
607 | if (netif_msg_hw(priv)) | |
608 | netdev_dbg(priv->dev, "%s: stop transmitted packets\n", | |
609 | __func__); | |
610 | netif_stop_queue(dev); | |
611 | } | |
612 | ||
613 | out: | |
614 | spin_unlock_bh(&priv->tx_lock); | |
615 | ||
616 | return ret; | |
617 | } | |
618 | ||
619 | /* Called every time the controller might need to be made | |
620 | * aware of new link state. The PHY code conveys this | |
621 | * information through variables in the phydev structure, and this | |
622 | * function converts those variables into the appropriate | |
623 | * register values, and can bring down the device if needed. | |
624 | */ | |
625 | static void altera_tse_adjust_link(struct net_device *dev) | |
626 | { | |
627 | struct altera_tse_private *priv = netdev_priv(dev); | |
628 | struct phy_device *phydev = priv->phydev; | |
629 | int new_state = 0; | |
630 | ||
631 | /* only change config if there is a link */ | |
632 | spin_lock(&priv->mac_cfg_lock); | |
633 | if (phydev->link) { | |
634 | /* Read old config */ | |
635 | u32 cfg_reg = ioread32(&priv->mac_dev->command_config); | |
636 | ||
637 | /* Check duplex */ | |
638 | if (phydev->duplex != priv->oldduplex) { | |
639 | new_state = 1; | |
640 | if (!(phydev->duplex)) | |
641 | cfg_reg |= MAC_CMDCFG_HD_ENA; | |
642 | else | |
643 | cfg_reg &= ~MAC_CMDCFG_HD_ENA; | |
644 | ||
645 | netdev_dbg(priv->dev, "%s: Link duplex = 0x%x\n", | |
646 | dev->name, phydev->duplex); | |
647 | ||
648 | priv->oldduplex = phydev->duplex; | |
649 | } | |
650 | ||
651 | /* Check speed */ | |
652 | if (phydev->speed != priv->oldspeed) { | |
653 | new_state = 1; | |
654 | switch (phydev->speed) { | |
655 | case 1000: | |
656 | cfg_reg |= MAC_CMDCFG_ETH_SPEED; | |
657 | cfg_reg &= ~MAC_CMDCFG_ENA_10; | |
658 | break; | |
659 | case 100: | |
660 | cfg_reg &= ~MAC_CMDCFG_ETH_SPEED; | |
661 | cfg_reg &= ~MAC_CMDCFG_ENA_10; | |
662 | break; | |
663 | case 10: | |
664 | cfg_reg &= ~MAC_CMDCFG_ETH_SPEED; | |
665 | cfg_reg |= MAC_CMDCFG_ENA_10; | |
666 | break; | |
667 | default: | |
668 | if (netif_msg_link(priv)) | |
669 | netdev_warn(dev, "Speed (%d) is not 10/100/1000!\n", | |
670 | phydev->speed); | |
671 | break; | |
672 | } | |
673 | priv->oldspeed = phydev->speed; | |
674 | } | |
675 | iowrite32(cfg_reg, &priv->mac_dev->command_config); | |
676 | ||
677 | if (!priv->oldlink) { | |
678 | new_state = 1; | |
679 | priv->oldlink = 1; | |
680 | } | |
681 | } else if (priv->oldlink) { | |
682 | new_state = 1; | |
683 | priv->oldlink = 0; | |
684 | priv->oldspeed = 0; | |
685 | priv->oldduplex = -1; | |
686 | } | |
687 | ||
688 | if (new_state && netif_msg_link(priv)) | |
689 | phy_print_status(phydev); | |
690 | ||
691 | spin_unlock(&priv->mac_cfg_lock); | |
692 | } | |
693 | static struct phy_device *connect_local_phy(struct net_device *dev) | |
694 | { | |
695 | struct altera_tse_private *priv = netdev_priv(dev); | |
696 | struct phy_device *phydev = NULL; | |
697 | char phy_id_fmt[MII_BUS_ID_SIZE + 3]; | |
bbd2190c VB |
698 | |
699 | if (priv->phy_addr != POLL_PHY) { | |
700 | snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, | |
701 | priv->mdio->id, priv->phy_addr); | |
702 | ||
703 | netdev_dbg(dev, "trying to attach to %s\n", phy_id_fmt); | |
704 | ||
705 | phydev = phy_connect(dev, phy_id_fmt, &altera_tse_adjust_link, | |
706 | priv->phy_iface); | |
707 | if (IS_ERR(phydev)) | |
708 | netdev_err(dev, "Could not attach to PHY\n"); | |
709 | ||
710 | } else { | |
89830580 | 711 | int ret; |
bbd2190c VB |
712 | phydev = phy_find_first(priv->mdio); |
713 | if (phydev == NULL) { | |
714 | netdev_err(dev, "No PHY found\n"); | |
715 | return phydev; | |
716 | } | |
717 | ||
718 | ret = phy_connect_direct(dev, phydev, &altera_tse_adjust_link, | |
719 | priv->phy_iface); | |
720 | if (ret != 0) { | |
721 | netdev_err(dev, "Could not attach to PHY\n"); | |
722 | phydev = NULL; | |
723 | } | |
724 | } | |
725 | return phydev; | |
726 | } | |
727 | ||
004fa118 WL |
728 | static int altera_tse_phy_get_addr_mdio_create(struct net_device *dev) |
729 | { | |
730 | struct altera_tse_private *priv = netdev_priv(dev); | |
731 | struct device_node *np = priv->device->of_node; | |
732 | int ret = 0; | |
733 | ||
734 | priv->phy_iface = of_get_phy_mode(np); | |
735 | ||
3354313e WL |
736 | /* Avoid get phy addr and create mdio if no phy is present */ |
737 | if (!priv->phy_iface) | |
738 | return 0; | |
739 | ||
004fa118 WL |
740 | /* try to get PHY address from device tree, use PHY autodetection if |
741 | * no valid address is given | |
742 | */ | |
743 | ||
744 | if (of_property_read_u32(priv->device->of_node, "phy-addr", | |
745 | &priv->phy_addr)) { | |
746 | priv->phy_addr = POLL_PHY; | |
747 | } | |
748 | ||
749 | if (!((priv->phy_addr == POLL_PHY) || | |
750 | ((priv->phy_addr >= 0) && (priv->phy_addr < PHY_MAX_ADDR)))) { | |
751 | netdev_err(dev, "invalid phy-addr specified %d\n", | |
752 | priv->phy_addr); | |
753 | return -ENODEV; | |
754 | } | |
755 | ||
756 | /* Create/attach to MDIO bus */ | |
757 | ret = altera_tse_mdio_create(dev, | |
758 | atomic_add_return(1, &instance_count)); | |
759 | ||
760 | if (ret) | |
761 | return -ENODEV; | |
762 | ||
763 | return 0; | |
764 | } | |
765 | ||
bbd2190c VB |
766 | /* Initialize driver's PHY state, and attach to the PHY |
767 | */ | |
768 | static int init_phy(struct net_device *dev) | |
769 | { | |
770 | struct altera_tse_private *priv = netdev_priv(dev); | |
771 | struct phy_device *phydev; | |
772 | struct device_node *phynode; | |
7cdbc6f7 AO |
773 | bool fixed_link = false; |
774 | int rc = 0; | |
bbd2190c | 775 | |
3354313e WL |
776 | /* Avoid init phy in case of no phy present */ |
777 | if (!priv->phy_iface) | |
778 | return 0; | |
779 | ||
bbd2190c VB |
780 | priv->oldlink = 0; |
781 | priv->oldspeed = 0; | |
782 | priv->oldduplex = -1; | |
783 | ||
784 | phynode = of_parse_phandle(priv->device->of_node, "phy-handle", 0); | |
785 | ||
786 | if (!phynode) { | |
7cdbc6f7 AO |
787 | /* check if a fixed-link is defined in device-tree */ |
788 | if (of_phy_is_fixed_link(priv->device->of_node)) { | |
789 | rc = of_phy_register_fixed_link(priv->device->of_node); | |
790 | if (rc < 0) { | |
791 | netdev_err(dev, "cannot register fixed PHY\n"); | |
792 | return rc; | |
793 | } | |
794 | ||
795 | /* In the case of a fixed PHY, the DT node associated | |
796 | * to the PHY is the Ethernet MAC DT node. | |
797 | */ | |
798 | phynode = of_node_get(priv->device->of_node); | |
799 | fixed_link = true; | |
800 | ||
801 | netdev_dbg(dev, "fixed-link detected\n"); | |
802 | phydev = of_phy_connect(dev, phynode, | |
803 | &altera_tse_adjust_link, | |
804 | 0, priv->phy_iface); | |
805 | } else { | |
806 | netdev_dbg(dev, "no phy-handle found\n"); | |
807 | if (!priv->mdio) { | |
808 | netdev_err(dev, "No phy-handle nor local mdio specified\n"); | |
809 | return -ENODEV; | |
810 | } | |
811 | phydev = connect_local_phy(dev); | |
bbd2190c | 812 | } |
bbd2190c VB |
813 | } else { |
814 | netdev_dbg(dev, "phy-handle found\n"); | |
815 | phydev = of_phy_connect(dev, phynode, | |
816 | &altera_tse_adjust_link, 0, priv->phy_iface); | |
817 | } | |
818 | ||
819 | if (!phydev) { | |
820 | netdev_err(dev, "Could not find the PHY\n"); | |
821 | return -ENODEV; | |
822 | } | |
823 | ||
824 | /* Stop Advertising 1000BASE Capability if interface is not GMII | |
825 | * Note: Checkpatch throws CHECKs for the camel case defines below, | |
826 | * it's ok to ignore. | |
827 | */ | |
828 | if ((priv->phy_iface == PHY_INTERFACE_MODE_MII) || | |
829 | (priv->phy_iface == PHY_INTERFACE_MODE_RMII)) | |
830 | phydev->advertising &= ~(SUPPORTED_1000baseT_Half | | |
831 | SUPPORTED_1000baseT_Full); | |
832 | ||
833 | /* Broken HW is sometimes missing the pull-up resistor on the | |
834 | * MDIO line, which results in reads to non-existent devices returning | |
835 | * 0 rather than 0xffff. Catch this here and treat 0 as a non-existent | |
7cdbc6f7 | 836 | * device as well. If a fixed-link is used the phy_id is always 0. |
bbd2190c VB |
837 | * Note: phydev->phy_id is the result of reading the UID PHY registers. |
838 | */ | |
7cdbc6f7 | 839 | if ((phydev->phy_id == 0) && !fixed_link) { |
bbd2190c VB |
840 | netdev_err(dev, "Bad PHY UID 0x%08x\n", phydev->phy_id); |
841 | phy_disconnect(phydev); | |
842 | return -ENODEV; | |
843 | } | |
844 | ||
845 | netdev_dbg(dev, "attached to PHY %d UID 0x%08x Link = %d\n", | |
e5a03bfd | 846 | phydev->mdio.addr, phydev->phy_id, phydev->link); |
bbd2190c VB |
847 | |
848 | priv->phydev = phydev; | |
849 | return 0; | |
850 | } | |
851 | ||
852 | static void tse_update_mac_addr(struct altera_tse_private *priv, u8 *addr) | |
853 | { | |
bbd2190c VB |
854 | u32 msb; |
855 | u32 lsb; | |
856 | ||
857 | msb = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; | |
858 | lsb = ((addr[5] << 8) | addr[4]) & 0xffff; | |
859 | ||
860 | /* Set primary MAC address */ | |
89830580 VB |
861 | csrwr32(msb, priv->mac_dev, tse_csroffs(mac_addr_0)); |
862 | csrwr32(lsb, priv->mac_dev, tse_csroffs(mac_addr_1)); | |
bbd2190c VB |
863 | } |
864 | ||
865 | /* MAC software reset. | |
866 | * When reset is triggered, the MAC function completes the current | |
867 | * transmission or reception, and subsequently disables the transmit and | |
868 | * receive logic, flushes the receive FIFO buffer, and resets the statistics | |
869 | * counters. | |
870 | */ | |
871 | static int reset_mac(struct altera_tse_private *priv) | |
872 | { | |
bbd2190c VB |
873 | int counter; |
874 | u32 dat; | |
875 | ||
89830580 | 876 | dat = csrrd32(priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
877 | dat &= ~(MAC_CMDCFG_TX_ENA | MAC_CMDCFG_RX_ENA); |
878 | dat |= MAC_CMDCFG_SW_RESET | MAC_CMDCFG_CNT_RESET; | |
89830580 | 879 | csrwr32(dat, priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
880 | |
881 | counter = 0; | |
882 | while (counter++ < ALTERA_TSE_SW_RESET_WATCHDOG_CNTR) { | |
89830580 VB |
883 | if (tse_bit_is_clear(priv->mac_dev, tse_csroffs(command_config), |
884 | MAC_CMDCFG_SW_RESET)) | |
bbd2190c VB |
885 | break; |
886 | udelay(1); | |
887 | } | |
888 | ||
889 | if (counter >= ALTERA_TSE_SW_RESET_WATCHDOG_CNTR) { | |
89830580 | 890 | dat = csrrd32(priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c | 891 | dat &= ~MAC_CMDCFG_SW_RESET; |
89830580 | 892 | csrwr32(dat, priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
893 | return -1; |
894 | } | |
895 | return 0; | |
896 | } | |
897 | ||
898 | /* Initialize MAC core registers | |
899 | */ | |
900 | static int init_mac(struct altera_tse_private *priv) | |
901 | { | |
bbd2190c VB |
902 | unsigned int cmd = 0; |
903 | u32 frm_length; | |
904 | ||
905 | /* Setup Rx FIFO */ | |
89830580 VB |
906 | csrwr32(priv->rx_fifo_depth - ALTERA_TSE_RX_SECTION_EMPTY, |
907 | priv->mac_dev, tse_csroffs(rx_section_empty)); | |
908 | ||
909 | csrwr32(ALTERA_TSE_RX_SECTION_FULL, priv->mac_dev, | |
910 | tse_csroffs(rx_section_full)); | |
911 | ||
912 | csrwr32(ALTERA_TSE_RX_ALMOST_EMPTY, priv->mac_dev, | |
913 | tse_csroffs(rx_almost_empty)); | |
914 | ||
915 | csrwr32(ALTERA_TSE_RX_ALMOST_FULL, priv->mac_dev, | |
916 | tse_csroffs(rx_almost_full)); | |
bbd2190c VB |
917 | |
918 | /* Setup Tx FIFO */ | |
89830580 VB |
919 | csrwr32(priv->tx_fifo_depth - ALTERA_TSE_TX_SECTION_EMPTY, |
920 | priv->mac_dev, tse_csroffs(tx_section_empty)); | |
921 | ||
922 | csrwr32(ALTERA_TSE_TX_SECTION_FULL, priv->mac_dev, | |
923 | tse_csroffs(tx_section_full)); | |
924 | ||
925 | csrwr32(ALTERA_TSE_TX_ALMOST_EMPTY, priv->mac_dev, | |
926 | tse_csroffs(tx_almost_empty)); | |
927 | ||
928 | csrwr32(ALTERA_TSE_TX_ALMOST_FULL, priv->mac_dev, | |
929 | tse_csroffs(tx_almost_full)); | |
bbd2190c VB |
930 | |
931 | /* MAC Address Configuration */ | |
932 | tse_update_mac_addr(priv, priv->dev->dev_addr); | |
933 | ||
934 | /* MAC Function Configuration */ | |
935 | frm_length = ETH_HLEN + priv->dev->mtu + ETH_FCS_LEN; | |
89830580 VB |
936 | csrwr32(frm_length, priv->mac_dev, tse_csroffs(frm_length)); |
937 | ||
938 | csrwr32(ALTERA_TSE_TX_IPG_LENGTH, priv->mac_dev, | |
939 | tse_csroffs(tx_ipg_length)); | |
bbd2190c VB |
940 | |
941 | /* Disable RX/TX shift 16 for alignment of all received frames on 16-bit | |
942 | * start address | |
943 | */ | |
89830580 VB |
944 | tse_set_bit(priv->mac_dev, tse_csroffs(rx_cmd_stat), |
945 | ALTERA_TSE_RX_CMD_STAT_RX_SHIFT16); | |
946 | ||
947 | tse_clear_bit(priv->mac_dev, tse_csroffs(tx_cmd_stat), | |
948 | ALTERA_TSE_TX_CMD_STAT_TX_SHIFT16 | | |
949 | ALTERA_TSE_TX_CMD_STAT_OMIT_CRC); | |
bbd2190c VB |
950 | |
951 | /* Set the MAC options */ | |
89830580 | 952 | cmd = csrrd32(priv->mac_dev, tse_csroffs(command_config)); |
37c0ffaa | 953 | cmd &= ~MAC_CMDCFG_PAD_EN; /* No padding Removal on Receive */ |
bbd2190c VB |
954 | cmd &= ~MAC_CMDCFG_CRC_FWD; /* CRC Removal */ |
955 | cmd |= MAC_CMDCFG_RX_ERR_DISC; /* Automatically discard frames | |
956 | * with CRC errors | |
957 | */ | |
958 | cmd |= MAC_CMDCFG_CNTL_FRM_ENA; | |
959 | cmd &= ~MAC_CMDCFG_TX_ENA; | |
960 | cmd &= ~MAC_CMDCFG_RX_ENA; | |
37c0ffaa VB |
961 | |
962 | /* Default speed and duplex setting, full/100 */ | |
963 | cmd &= ~MAC_CMDCFG_HD_ENA; | |
964 | cmd &= ~MAC_CMDCFG_ETH_SPEED; | |
965 | cmd &= ~MAC_CMDCFG_ENA_10; | |
966 | ||
89830580 | 967 | csrwr32(cmd, priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c | 968 | |
89830580 VB |
969 | csrwr32(ALTERA_TSE_PAUSE_QUANTA, priv->mac_dev, |
970 | tse_csroffs(pause_quanta)); | |
5aec4ee3 | 971 | |
bbd2190c VB |
972 | if (netif_msg_hw(priv)) |
973 | dev_dbg(priv->device, | |
974 | "MAC post-initialization: CMD_CONFIG = 0x%08x\n", cmd); | |
975 | ||
976 | return 0; | |
977 | } | |
978 | ||
979 | /* Start/stop MAC transmission logic | |
980 | */ | |
981 | static void tse_set_mac(struct altera_tse_private *priv, bool enable) | |
982 | { | |
89830580 | 983 | u32 value = csrrd32(priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
984 | |
985 | if (enable) | |
986 | value |= MAC_CMDCFG_TX_ENA | MAC_CMDCFG_RX_ENA; | |
987 | else | |
988 | value &= ~(MAC_CMDCFG_TX_ENA | MAC_CMDCFG_RX_ENA); | |
989 | ||
89830580 | 990 | csrwr32(value, priv->mac_dev, tse_csroffs(command_config)); |
bbd2190c VB |
991 | } |
992 | ||
993 | /* Change the MTU | |
994 | */ | |
995 | static int tse_change_mtu(struct net_device *dev, int new_mtu) | |
996 | { | |
997 | struct altera_tse_private *priv = netdev_priv(dev); | |
998 | unsigned int max_mtu = priv->max_mtu; | |
999 | unsigned int min_mtu = ETH_ZLEN + ETH_FCS_LEN; | |
1000 | ||
1001 | if (netif_running(dev)) { | |
1002 | netdev_err(dev, "must be stopped to change its MTU\n"); | |
1003 | return -EBUSY; | |
1004 | } | |
1005 | ||
1006 | if ((new_mtu < min_mtu) || (new_mtu > max_mtu)) { | |
1007 | netdev_err(dev, "invalid MTU, max MTU is: %u\n", max_mtu); | |
1008 | return -EINVAL; | |
1009 | } | |
1010 | ||
1011 | dev->mtu = new_mtu; | |
1012 | netdev_update_features(dev); | |
1013 | ||
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | static void altera_tse_set_mcfilter(struct net_device *dev) | |
1018 | { | |
1019 | struct altera_tse_private *priv = netdev_priv(dev); | |
bbd2190c VB |
1020 | int i; |
1021 | struct netdev_hw_addr *ha; | |
1022 | ||
1023 | /* clear the hash filter */ | |
1024 | for (i = 0; i < 64; i++) | |
89830580 | 1025 | csrwr32(0, priv->mac_dev, tse_csroffs(hash_table) + i * 4); |
bbd2190c VB |
1026 | |
1027 | netdev_for_each_mc_addr(ha, dev) { | |
1028 | unsigned int hash = 0; | |
1029 | int mac_octet; | |
1030 | ||
1031 | for (mac_octet = 5; mac_octet >= 0; mac_octet--) { | |
1032 | unsigned char xor_bit = 0; | |
1033 | unsigned char octet = ha->addr[mac_octet]; | |
1034 | unsigned int bitshift; | |
1035 | ||
1036 | for (bitshift = 0; bitshift < 8; bitshift++) | |
1037 | xor_bit ^= ((octet >> bitshift) & 0x01); | |
1038 | ||
1039 | hash = (hash << 1) | xor_bit; | |
1040 | } | |
89830580 | 1041 | csrwr32(1, priv->mac_dev, tse_csroffs(hash_table) + hash * 4); |
bbd2190c VB |
1042 | } |
1043 | } | |
1044 | ||
1045 | ||
1046 | static void altera_tse_set_mcfilterall(struct net_device *dev) | |
1047 | { | |
1048 | struct altera_tse_private *priv = netdev_priv(dev); | |
bbd2190c VB |
1049 | int i; |
1050 | ||
1051 | /* set the hash filter */ | |
1052 | for (i = 0; i < 64; i++) | |
89830580 | 1053 | csrwr32(1, priv->mac_dev, tse_csroffs(hash_table) + i * 4); |
bbd2190c VB |
1054 | } |
1055 | ||
1056 | /* Set or clear the multicast filter for this adaptor | |
1057 | */ | |
1058 | static void tse_set_rx_mode_hashfilter(struct net_device *dev) | |
1059 | { | |
1060 | struct altera_tse_private *priv = netdev_priv(dev); | |
bbd2190c VB |
1061 | |
1062 | spin_lock(&priv->mac_cfg_lock); | |
1063 | ||
1064 | if (dev->flags & IFF_PROMISC) | |
89830580 VB |
1065 | tse_set_bit(priv->mac_dev, tse_csroffs(command_config), |
1066 | MAC_CMDCFG_PROMIS_EN); | |
bbd2190c VB |
1067 | |
1068 | if (dev->flags & IFF_ALLMULTI) | |
1069 | altera_tse_set_mcfilterall(dev); | |
1070 | else | |
1071 | altera_tse_set_mcfilter(dev); | |
1072 | ||
1073 | spin_unlock(&priv->mac_cfg_lock); | |
1074 | } | |
1075 | ||
1076 | /* Set or clear the multicast filter for this adaptor | |
1077 | */ | |
1078 | static void tse_set_rx_mode(struct net_device *dev) | |
1079 | { | |
1080 | struct altera_tse_private *priv = netdev_priv(dev); | |
bbd2190c VB |
1081 | |
1082 | spin_lock(&priv->mac_cfg_lock); | |
1083 | ||
1084 | if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) || | |
1085 | !netdev_mc_empty(dev) || !netdev_uc_empty(dev)) | |
89830580 VB |
1086 | tse_set_bit(priv->mac_dev, tse_csroffs(command_config), |
1087 | MAC_CMDCFG_PROMIS_EN); | |
bbd2190c | 1088 | else |
89830580 VB |
1089 | tse_clear_bit(priv->mac_dev, tse_csroffs(command_config), |
1090 | MAC_CMDCFG_PROMIS_EN); | |
bbd2190c VB |
1091 | |
1092 | spin_unlock(&priv->mac_cfg_lock); | |
1093 | } | |
1094 | ||
1095 | /* Open and initialize the interface | |
1096 | */ | |
1097 | static int tse_open(struct net_device *dev) | |
1098 | { | |
1099 | struct altera_tse_private *priv = netdev_priv(dev); | |
1100 | int ret = 0; | |
1101 | int i; | |
1102 | unsigned long int flags; | |
1103 | ||
1104 | /* Reset and configure TSE MAC and probe associated PHY */ | |
1105 | ret = priv->dmaops->init_dma(priv); | |
1106 | if (ret != 0) { | |
1107 | netdev_err(dev, "Cannot initialize DMA\n"); | |
1108 | goto phy_error; | |
1109 | } | |
1110 | ||
1111 | if (netif_msg_ifup(priv)) | |
1112 | netdev_warn(dev, "device MAC address %pM\n", | |
1113 | dev->dev_addr); | |
1114 | ||
1115 | if ((priv->revision < 0xd00) || (priv->revision > 0xe00)) | |
1116 | netdev_warn(dev, "TSE revision %x\n", priv->revision); | |
1117 | ||
1118 | spin_lock(&priv->mac_cfg_lock); | |
1119 | ret = reset_mac(priv); | |
ea8860eb VB |
1120 | /* Note that reset_mac will fail if the clocks are gated by the PHY |
1121 | * due to the PHY being put into isolation or power down mode. | |
1122 | * This is not an error if reset fails due to no clock. | |
1123 | */ | |
bbd2190c | 1124 | if (ret) |
ea8860eb | 1125 | netdev_dbg(dev, "Cannot reset MAC core (error: %d)\n", ret); |
bbd2190c VB |
1126 | |
1127 | ret = init_mac(priv); | |
1128 | spin_unlock(&priv->mac_cfg_lock); | |
1129 | if (ret) { | |
1130 | netdev_err(dev, "Cannot init MAC core (error: %d)\n", ret); | |
1131 | goto alloc_skbuf_error; | |
1132 | } | |
1133 | ||
1134 | priv->dmaops->reset_dma(priv); | |
1135 | ||
1136 | /* Create and initialize the TX/RX descriptors chains. */ | |
1137 | priv->rx_ring_size = dma_rx_num; | |
1138 | priv->tx_ring_size = dma_tx_num; | |
1139 | ret = alloc_init_skbufs(priv); | |
1140 | if (ret) { | |
1141 | netdev_err(dev, "DMA descriptors initialization failed\n"); | |
1142 | goto alloc_skbuf_error; | |
1143 | } | |
1144 | ||
1145 | ||
1146 | /* Register RX interrupt */ | |
1147 | ret = request_irq(priv->rx_irq, altera_isr, IRQF_SHARED, | |
1148 | dev->name, dev); | |
1149 | if (ret) { | |
1150 | netdev_err(dev, "Unable to register RX interrupt %d\n", | |
1151 | priv->rx_irq); | |
1152 | goto init_error; | |
1153 | } | |
1154 | ||
1155 | /* Register TX interrupt */ | |
1156 | ret = request_irq(priv->tx_irq, altera_isr, IRQF_SHARED, | |
1157 | dev->name, dev); | |
1158 | if (ret) { | |
1159 | netdev_err(dev, "Unable to register TX interrupt %d\n", | |
1160 | priv->tx_irq); | |
1161 | goto tx_request_irq_error; | |
1162 | } | |
1163 | ||
1164 | /* Enable DMA interrupts */ | |
1165 | spin_lock_irqsave(&priv->rxdma_irq_lock, flags); | |
1166 | priv->dmaops->enable_rxirq(priv); | |
1167 | priv->dmaops->enable_txirq(priv); | |
1168 | ||
1169 | /* Setup RX descriptor chain */ | |
1170 | for (i = 0; i < priv->rx_ring_size; i++) | |
1171 | priv->dmaops->add_rx_desc(priv, &priv->rx_ring[i]); | |
1172 | ||
1173 | spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); | |
1174 | ||
bbd2190c VB |
1175 | if (priv->phydev) |
1176 | phy_start(priv->phydev); | |
1177 | ||
1178 | napi_enable(&priv->napi); | |
1179 | netif_start_queue(dev); | |
1180 | ||
37c0ffaa VB |
1181 | priv->dmaops->start_rxdma(priv); |
1182 | ||
1183 | /* Start MAC Rx/Tx */ | |
1184 | spin_lock(&priv->mac_cfg_lock); | |
1185 | tse_set_mac(priv, true); | |
1186 | spin_unlock(&priv->mac_cfg_lock); | |
1187 | ||
bbd2190c VB |
1188 | return 0; |
1189 | ||
1190 | tx_request_irq_error: | |
1191 | free_irq(priv->rx_irq, dev); | |
1192 | init_error: | |
1193 | free_skbufs(dev); | |
1194 | alloc_skbuf_error: | |
bbd2190c VB |
1195 | phy_error: |
1196 | return ret; | |
1197 | } | |
1198 | ||
1199 | /* Stop TSE MAC interface and put the device in an inactive state | |
1200 | */ | |
1201 | static int tse_shutdown(struct net_device *dev) | |
1202 | { | |
1203 | struct altera_tse_private *priv = netdev_priv(dev); | |
1204 | int ret; | |
1205 | unsigned long int flags; | |
1206 | ||
c484994e KB |
1207 | /* Stop the PHY */ |
1208 | if (priv->phydev) | |
bbd2190c | 1209 | phy_stop(priv->phydev); |
bbd2190c VB |
1210 | |
1211 | netif_stop_queue(dev); | |
1212 | napi_disable(&priv->napi); | |
1213 | ||
1214 | /* Disable DMA interrupts */ | |
1215 | spin_lock_irqsave(&priv->rxdma_irq_lock, flags); | |
1216 | priv->dmaops->disable_rxirq(priv); | |
1217 | priv->dmaops->disable_txirq(priv); | |
1218 | spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); | |
1219 | ||
1220 | /* Free the IRQ lines */ | |
1221 | free_irq(priv->rx_irq, dev); | |
1222 | free_irq(priv->tx_irq, dev); | |
1223 | ||
1224 | /* disable and reset the MAC, empties fifo */ | |
1225 | spin_lock(&priv->mac_cfg_lock); | |
1226 | spin_lock(&priv->tx_lock); | |
1227 | ||
1228 | ret = reset_mac(priv); | |
ea8860eb VB |
1229 | /* Note that reset_mac will fail if the clocks are gated by the PHY |
1230 | * due to the PHY being put into isolation or power down mode. | |
1231 | * This is not an error if reset fails due to no clock. | |
1232 | */ | |
bbd2190c | 1233 | if (ret) |
ea8860eb | 1234 | netdev_dbg(dev, "Cannot reset MAC core (error: %d)\n", ret); |
bbd2190c VB |
1235 | priv->dmaops->reset_dma(priv); |
1236 | free_skbufs(dev); | |
1237 | ||
1238 | spin_unlock(&priv->tx_lock); | |
1239 | spin_unlock(&priv->mac_cfg_lock); | |
1240 | ||
1241 | priv->dmaops->uninit_dma(priv); | |
1242 | ||
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | static struct net_device_ops altera_tse_netdev_ops = { | |
1247 | .ndo_open = tse_open, | |
1248 | .ndo_stop = tse_shutdown, | |
1249 | .ndo_start_xmit = tse_start_xmit, | |
1250 | .ndo_set_mac_address = eth_mac_addr, | |
1251 | .ndo_set_rx_mode = tse_set_rx_mode, | |
1252 | .ndo_change_mtu = tse_change_mtu, | |
1253 | .ndo_validate_addr = eth_validate_addr, | |
1254 | }; | |
1255 | ||
bbd2190c VB |
1256 | static int request_and_map(struct platform_device *pdev, const char *name, |
1257 | struct resource **res, void __iomem **ptr) | |
1258 | { | |
1259 | struct resource *region; | |
1260 | struct device *device = &pdev->dev; | |
1261 | ||
1262 | *res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); | |
1263 | if (*res == NULL) { | |
1264 | dev_err(device, "resource %s not defined\n", name); | |
1265 | return -ENODEV; | |
1266 | } | |
1267 | ||
1268 | region = devm_request_mem_region(device, (*res)->start, | |
1269 | resource_size(*res), dev_name(device)); | |
1270 | if (region == NULL) { | |
1271 | dev_err(device, "unable to request %s\n", name); | |
1272 | return -EBUSY; | |
1273 | } | |
1274 | ||
1275 | *ptr = devm_ioremap_nocache(device, region->start, | |
1276 | resource_size(region)); | |
1277 | if (*ptr == NULL) { | |
1278 | dev_err(device, "ioremap_nocache of %s failed!", name); | |
1279 | return -ENOMEM; | |
1280 | } | |
1281 | ||
1282 | return 0; | |
1283 | } | |
1284 | ||
1285 | /* Probe Altera TSE MAC device | |
1286 | */ | |
1287 | static int altera_tse_probe(struct platform_device *pdev) | |
1288 | { | |
1289 | struct net_device *ndev; | |
1290 | int ret = -ENODEV; | |
1291 | struct resource *control_port; | |
1292 | struct resource *dma_res; | |
1293 | struct altera_tse_private *priv; | |
1294 | const unsigned char *macaddr; | |
bbd2190c VB |
1295 | void __iomem *descmap; |
1296 | const struct of_device_id *of_id = NULL; | |
1297 | ||
1298 | ndev = alloc_etherdev(sizeof(struct altera_tse_private)); | |
1299 | if (!ndev) { | |
1300 | dev_err(&pdev->dev, "Could not allocate network device\n"); | |
1301 | return -ENODEV; | |
1302 | } | |
1303 | ||
1304 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
1305 | ||
1306 | priv = netdev_priv(ndev); | |
1307 | priv->device = &pdev->dev; | |
1308 | priv->dev = ndev; | |
1309 | priv->msg_enable = netif_msg_init(debug, default_msg_level); | |
1310 | ||
1311 | of_id = of_match_device(altera_tse_ids, &pdev->dev); | |
1312 | ||
1313 | if (of_id) | |
1314 | priv->dmaops = (struct altera_dmaops *)of_id->data; | |
1315 | ||
1316 | ||
1317 | if (priv->dmaops && | |
1318 | priv->dmaops->altera_dtype == ALTERA_DTYPE_SGDMA) { | |
1319 | /* Get the mapped address to the SGDMA descriptor memory */ | |
1320 | ret = request_and_map(pdev, "s1", &dma_res, &descmap); | |
1321 | if (ret) | |
a7642009 | 1322 | goto err_free_netdev; |
bbd2190c VB |
1323 | |
1324 | /* Start of that memory is for transmit descriptors */ | |
1325 | priv->tx_dma_desc = descmap; | |
1326 | ||
1327 | /* First half is for tx descriptors, other half for tx */ | |
1328 | priv->txdescmem = resource_size(dma_res)/2; | |
1329 | ||
1330 | priv->txdescmem_busaddr = (dma_addr_t)dma_res->start; | |
1331 | ||
1332 | priv->rx_dma_desc = (void __iomem *)((uintptr_t)(descmap + | |
1333 | priv->txdescmem)); | |
1334 | priv->rxdescmem = resource_size(dma_res)/2; | |
1335 | priv->rxdescmem_busaddr = dma_res->start; | |
1336 | priv->rxdescmem_busaddr += priv->txdescmem; | |
1337 | ||
1338 | if (upper_32_bits(priv->rxdescmem_busaddr)) { | |
1339 | dev_dbg(priv->device, | |
1340 | "SGDMA bus addresses greater than 32-bits\n"); | |
a7642009 | 1341 | goto err_free_netdev; |
bbd2190c VB |
1342 | } |
1343 | if (upper_32_bits(priv->txdescmem_busaddr)) { | |
1344 | dev_dbg(priv->device, | |
1345 | "SGDMA bus addresses greater than 32-bits\n"); | |
a7642009 | 1346 | goto err_free_netdev; |
bbd2190c VB |
1347 | } |
1348 | } else if (priv->dmaops && | |
1349 | priv->dmaops->altera_dtype == ALTERA_DTYPE_MSGDMA) { | |
1350 | ret = request_and_map(pdev, "rx_resp", &dma_res, | |
1351 | &priv->rx_dma_resp); | |
1352 | if (ret) | |
a7642009 | 1353 | goto err_free_netdev; |
bbd2190c VB |
1354 | |
1355 | ret = request_and_map(pdev, "tx_desc", &dma_res, | |
1356 | &priv->tx_dma_desc); | |
1357 | if (ret) | |
a7642009 | 1358 | goto err_free_netdev; |
bbd2190c VB |
1359 | |
1360 | priv->txdescmem = resource_size(dma_res); | |
1361 | priv->txdescmem_busaddr = dma_res->start; | |
1362 | ||
1363 | ret = request_and_map(pdev, "rx_desc", &dma_res, | |
1364 | &priv->rx_dma_desc); | |
1365 | if (ret) | |
a7642009 | 1366 | goto err_free_netdev; |
bbd2190c VB |
1367 | |
1368 | priv->rxdescmem = resource_size(dma_res); | |
1369 | priv->rxdescmem_busaddr = dma_res->start; | |
1370 | ||
1371 | } else { | |
a7642009 | 1372 | goto err_free_netdev; |
bbd2190c VB |
1373 | } |
1374 | ||
1375 | if (!dma_set_mask(priv->device, DMA_BIT_MASK(priv->dmaops->dmamask))) | |
1376 | dma_set_coherent_mask(priv->device, | |
1377 | DMA_BIT_MASK(priv->dmaops->dmamask)); | |
1378 | else if (!dma_set_mask(priv->device, DMA_BIT_MASK(32))) | |
1379 | dma_set_coherent_mask(priv->device, DMA_BIT_MASK(32)); | |
1380 | else | |
a7642009 | 1381 | goto err_free_netdev; |
bbd2190c VB |
1382 | |
1383 | /* MAC address space */ | |
1384 | ret = request_and_map(pdev, "control_port", &control_port, | |
1385 | (void __iomem **)&priv->mac_dev); | |
1386 | if (ret) | |
a7642009 | 1387 | goto err_free_netdev; |
bbd2190c VB |
1388 | |
1389 | /* xSGDMA Rx Dispatcher address space */ | |
1390 | ret = request_and_map(pdev, "rx_csr", &dma_res, | |
1391 | &priv->rx_dma_csr); | |
1392 | if (ret) | |
a7642009 | 1393 | goto err_free_netdev; |
bbd2190c VB |
1394 | |
1395 | ||
1396 | /* xSGDMA Tx Dispatcher address space */ | |
1397 | ret = request_and_map(pdev, "tx_csr", &dma_res, | |
1398 | &priv->tx_dma_csr); | |
1399 | if (ret) | |
a7642009 | 1400 | goto err_free_netdev; |
bbd2190c VB |
1401 | |
1402 | ||
1403 | /* Rx IRQ */ | |
1404 | priv->rx_irq = platform_get_irq_byname(pdev, "rx_irq"); | |
1405 | if (priv->rx_irq == -ENXIO) { | |
1406 | dev_err(&pdev->dev, "cannot obtain Rx IRQ\n"); | |
1407 | ret = -ENXIO; | |
a7642009 | 1408 | goto err_free_netdev; |
bbd2190c VB |
1409 | } |
1410 | ||
1411 | /* Tx IRQ */ | |
1412 | priv->tx_irq = platform_get_irq_byname(pdev, "tx_irq"); | |
1413 | if (priv->tx_irq == -ENXIO) { | |
1414 | dev_err(&pdev->dev, "cannot obtain Tx IRQ\n"); | |
1415 | ret = -ENXIO; | |
a7642009 | 1416 | goto err_free_netdev; |
bbd2190c VB |
1417 | } |
1418 | ||
1419 | /* get FIFO depths from device tree */ | |
1420 | if (of_property_read_u32(pdev->dev.of_node, "rx-fifo-depth", | |
1421 | &priv->rx_fifo_depth)) { | |
1422 | dev_err(&pdev->dev, "cannot obtain rx-fifo-depth\n"); | |
1423 | ret = -ENXIO; | |
a7642009 | 1424 | goto err_free_netdev; |
bbd2190c VB |
1425 | } |
1426 | ||
1427 | if (of_property_read_u32(pdev->dev.of_node, "tx-fifo-depth", | |
fe6e4081 | 1428 | &priv->tx_fifo_depth)) { |
bbd2190c VB |
1429 | dev_err(&pdev->dev, "cannot obtain tx-fifo-depth\n"); |
1430 | ret = -ENXIO; | |
a7642009 | 1431 | goto err_free_netdev; |
bbd2190c VB |
1432 | } |
1433 | ||
1434 | /* get hash filter settings for this instance */ | |
1435 | priv->hash_filter = | |
1436 | of_property_read_bool(pdev->dev.of_node, | |
1437 | "altr,has-hash-multicast-filter"); | |
1438 | ||
d91e5c02 VB |
1439 | /* Set hash filter to not set for now until the |
1440 | * multicast filter receive issue is debugged | |
1441 | */ | |
1442 | priv->hash_filter = 0; | |
1443 | ||
bbd2190c VB |
1444 | /* get supplemental address settings for this instance */ |
1445 | priv->added_unicast = | |
1446 | of_property_read_bool(pdev->dev.of_node, | |
1447 | "altr,has-supplementary-unicast"); | |
1448 | ||
1449 | /* Max MTU is 1500, ETH_DATA_LEN */ | |
1450 | priv->max_mtu = ETH_DATA_LEN; | |
1451 | ||
1452 | /* Get the max mtu from the device tree. Note that the | |
1453 | * "max-frame-size" parameter is actually max mtu. Definition | |
1454 | * in the ePAPR v1.1 spec and usage differ, so go with usage. | |
1455 | */ | |
1456 | of_property_read_u32(pdev->dev.of_node, "max-frame-size", | |
1457 | &priv->max_mtu); | |
1458 | ||
1459 | /* The DMA buffer size already accounts for an alignment bias | |
1460 | * to avoid unaligned access exceptions for the NIOS processor, | |
1461 | */ | |
1462 | priv->rx_dma_buf_sz = ALTERA_RXDMABUFFER_SIZE; | |
1463 | ||
1464 | /* get default MAC address from device tree */ | |
1465 | macaddr = of_get_mac_address(pdev->dev.of_node); | |
1466 | if (macaddr) | |
1467 | ether_addr_copy(ndev->dev_addr, macaddr); | |
1468 | else | |
1469 | eth_hw_addr_random(ndev); | |
1470 | ||
004fa118 WL |
1471 | /* get phy addr and create mdio */ |
1472 | ret = altera_tse_phy_get_addr_mdio_create(ndev); | |
bbd2190c VB |
1473 | |
1474 | if (ret) | |
a7642009 | 1475 | goto err_free_netdev; |
bbd2190c VB |
1476 | |
1477 | /* initialize netdev */ | |
bbd2190c VB |
1478 | ndev->mem_start = control_port->start; |
1479 | ndev->mem_end = control_port->end; | |
1480 | ndev->netdev_ops = &altera_tse_netdev_ops; | |
1481 | altera_tse_set_ethtool_ops(ndev); | |
1482 | ||
1483 | altera_tse_netdev_ops.ndo_set_rx_mode = tse_set_rx_mode; | |
1484 | ||
1485 | if (priv->hash_filter) | |
1486 | altera_tse_netdev_ops.ndo_set_rx_mode = | |
1487 | tse_set_rx_mode_hashfilter; | |
1488 | ||
1489 | /* Scatter/gather IO is not supported, | |
1490 | * so it is turned off | |
1491 | */ | |
1492 | ndev->hw_features &= ~NETIF_F_SG; | |
1493 | ndev->features |= ndev->hw_features | NETIF_F_HIGHDMA; | |
1494 | ||
1495 | /* VLAN offloading of tagging, stripping and filtering is not | |
1496 | * supported by hardware, but driver will accommodate the | |
1497 | * extra 4-byte VLAN tag for processing by upper layers | |
1498 | */ | |
1499 | ndev->features |= NETIF_F_HW_VLAN_CTAG_RX; | |
1500 | ||
1501 | /* setup NAPI interface */ | |
1502 | netif_napi_add(ndev, &priv->napi, tse_poll, NAPI_POLL_WEIGHT); | |
1503 | ||
1504 | spin_lock_init(&priv->mac_cfg_lock); | |
1505 | spin_lock_init(&priv->tx_lock); | |
1506 | spin_lock_init(&priv->rxdma_irq_lock); | |
1507 | ||
d43cefcd | 1508 | netif_carrier_off(ndev); |
bbd2190c VB |
1509 | ret = register_netdev(ndev); |
1510 | if (ret) { | |
1511 | dev_err(&pdev->dev, "failed to register TSE net device\n"); | |
a7642009 | 1512 | goto err_register_netdev; |
bbd2190c VB |
1513 | } |
1514 | ||
1515 | platform_set_drvdata(pdev, ndev); | |
1516 | ||
1517 | priv->revision = ioread32(&priv->mac_dev->megacore_revision); | |
1518 | ||
1519 | if (netif_msg_probe(priv)) | |
1520 | dev_info(&pdev->dev, "Altera TSE MAC version %d.%d at 0x%08lx irq %d/%d\n", | |
1521 | (priv->revision >> 8) & 0xff, | |
1522 | priv->revision & 0xff, | |
1523 | (unsigned long) control_port->start, priv->rx_irq, | |
1524 | priv->tx_irq); | |
1525 | ||
1526 | ret = init_phy(ndev); | |
1527 | if (ret != 0) { | |
1528 | netdev_err(ndev, "Cannot attach to PHY (error: %d)\n", ret); | |
a7642009 | 1529 | goto err_init_phy; |
bbd2190c VB |
1530 | } |
1531 | return 0; | |
1532 | ||
a7642009 VB |
1533 | err_init_phy: |
1534 | unregister_netdev(ndev); | |
1535 | err_register_netdev: | |
1536 | netif_napi_del(&priv->napi); | |
bbd2190c | 1537 | altera_tse_mdio_destroy(ndev); |
a7642009 | 1538 | err_free_netdev: |
bbd2190c VB |
1539 | free_netdev(ndev); |
1540 | return ret; | |
1541 | } | |
1542 | ||
1543 | /* Remove Altera TSE MAC device | |
1544 | */ | |
1545 | static int altera_tse_remove(struct platform_device *pdev) | |
1546 | { | |
1547 | struct net_device *ndev = platform_get_drvdata(pdev); | |
c484994e KB |
1548 | struct altera_tse_private *priv = netdev_priv(ndev); |
1549 | ||
1550 | if (priv->phydev) | |
1551 | phy_disconnect(priv->phydev); | |
bbd2190c VB |
1552 | |
1553 | platform_set_drvdata(pdev, NULL); | |
1554 | altera_tse_mdio_destroy(ndev); | |
1555 | unregister_netdev(ndev); | |
1556 | free_netdev(ndev); | |
1557 | ||
1558 | return 0; | |
1559 | } | |
1560 | ||
89830580 | 1561 | static const struct altera_dmaops altera_dtype_sgdma = { |
bbd2190c VB |
1562 | .altera_dtype = ALTERA_DTYPE_SGDMA, |
1563 | .dmamask = 32, | |
1564 | .reset_dma = sgdma_reset, | |
1565 | .enable_txirq = sgdma_enable_txirq, | |
1566 | .enable_rxirq = sgdma_enable_rxirq, | |
1567 | .disable_txirq = sgdma_disable_txirq, | |
1568 | .disable_rxirq = sgdma_disable_rxirq, | |
1569 | .clear_txirq = sgdma_clear_txirq, | |
1570 | .clear_rxirq = sgdma_clear_rxirq, | |
1571 | .tx_buffer = sgdma_tx_buffer, | |
1572 | .tx_completions = sgdma_tx_completions, | |
1573 | .add_rx_desc = sgdma_add_rx_desc, | |
1574 | .get_rx_status = sgdma_rx_status, | |
1575 | .init_dma = sgdma_initialize, | |
1576 | .uninit_dma = sgdma_uninitialize, | |
37c0ffaa | 1577 | .start_rxdma = sgdma_start_rxdma, |
bbd2190c VB |
1578 | }; |
1579 | ||
89830580 | 1580 | static const struct altera_dmaops altera_dtype_msgdma = { |
bbd2190c VB |
1581 | .altera_dtype = ALTERA_DTYPE_MSGDMA, |
1582 | .dmamask = 64, | |
1583 | .reset_dma = msgdma_reset, | |
1584 | .enable_txirq = msgdma_enable_txirq, | |
1585 | .enable_rxirq = msgdma_enable_rxirq, | |
1586 | .disable_txirq = msgdma_disable_txirq, | |
1587 | .disable_rxirq = msgdma_disable_rxirq, | |
1588 | .clear_txirq = msgdma_clear_txirq, | |
1589 | .clear_rxirq = msgdma_clear_rxirq, | |
1590 | .tx_buffer = msgdma_tx_buffer, | |
1591 | .tx_completions = msgdma_tx_completions, | |
1592 | .add_rx_desc = msgdma_add_rx_desc, | |
1593 | .get_rx_status = msgdma_rx_status, | |
1594 | .init_dma = msgdma_initialize, | |
1595 | .uninit_dma = msgdma_uninitialize, | |
37c0ffaa | 1596 | .start_rxdma = msgdma_start_rxdma, |
bbd2190c VB |
1597 | }; |
1598 | ||
27260530 | 1599 | static const struct of_device_id altera_tse_ids[] = { |
bbd2190c VB |
1600 | { .compatible = "altr,tse-msgdma-1.0", .data = &altera_dtype_msgdma, }, |
1601 | { .compatible = "altr,tse-1.0", .data = &altera_dtype_sgdma, }, | |
1602 | { .compatible = "ALTR,tse-1.0", .data = &altera_dtype_sgdma, }, | |
1603 | {}, | |
1604 | }; | |
1605 | MODULE_DEVICE_TABLE(of, altera_tse_ids); | |
1606 | ||
1607 | static struct platform_driver altera_tse_driver = { | |
1608 | .probe = altera_tse_probe, | |
1609 | .remove = altera_tse_remove, | |
1610 | .suspend = NULL, | |
1611 | .resume = NULL, | |
1612 | .driver = { | |
1613 | .name = ALTERA_TSE_RESOURCE_NAME, | |
bbd2190c VB |
1614 | .of_match_table = altera_tse_ids, |
1615 | }, | |
1616 | }; | |
1617 | ||
1618 | module_platform_driver(altera_tse_driver); | |
1619 | ||
1620 | MODULE_AUTHOR("Altera Corporation"); | |
1621 | MODULE_DESCRIPTION("Altera Triple Speed Ethernet MAC driver"); | |
1622 | MODULE_LICENSE("GPL v2"); |