Commit | Line | Data |
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dd4544f0 RM |
1 | /* |
2 | * Driver for (BCM4706)? GBit MAC core on BCMA bus. | |
3 | * | |
4 | * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com> | |
5 | * | |
6 | * Licensed under the GNU/GPL. See COPYING for details. | |
7 | */ | |
8 | ||
9 | #include "bgmac.h" | |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/delay.h> | |
14 | #include <linux/etherdevice.h> | |
15 | #include <linux/mii.h> | |
11e5e76e | 16 | #include <linux/phy.h> |
dd4544f0 RM |
17 | #include <linux/interrupt.h> |
18 | #include <linux/dma-mapping.h> | |
edb15d83 | 19 | #include <bcm47xx_nvram.h> |
dd4544f0 RM |
20 | |
21 | static const struct bcma_device_id bgmac_bcma_tbl[] = { | |
22 | BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS), | |
23 | BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS), | |
24 | BCMA_CORETABLE_END | |
25 | }; | |
26 | MODULE_DEVICE_TABLE(bcma, bgmac_bcma_tbl); | |
27 | ||
28 | static bool bgmac_wait_value(struct bcma_device *core, u16 reg, u32 mask, | |
29 | u32 value, int timeout) | |
30 | { | |
31 | u32 val; | |
32 | int i; | |
33 | ||
34 | for (i = 0; i < timeout / 10; i++) { | |
35 | val = bcma_read32(core, reg); | |
36 | if ((val & mask) == value) | |
37 | return true; | |
38 | udelay(10); | |
39 | } | |
40 | pr_err("Timeout waiting for reg 0x%X\n", reg); | |
41 | return false; | |
42 | } | |
43 | ||
44 | /************************************************** | |
45 | * DMA | |
46 | **************************************************/ | |
47 | ||
48 | static void bgmac_dma_tx_reset(struct bgmac *bgmac, struct bgmac_dma_ring *ring) | |
49 | { | |
50 | u32 val; | |
51 | int i; | |
52 | ||
53 | if (!ring->mmio_base) | |
54 | return; | |
55 | ||
56 | /* Suspend DMA TX ring first. | |
57 | * bgmac_wait_value doesn't support waiting for any of few values, so | |
58 | * implement whole loop here. | |
59 | */ | |
60 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, | |
61 | BGMAC_DMA_TX_SUSPEND); | |
62 | for (i = 0; i < 10000 / 10; i++) { | |
63 | val = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS); | |
64 | val &= BGMAC_DMA_TX_STAT; | |
65 | if (val == BGMAC_DMA_TX_STAT_DISABLED || | |
66 | val == BGMAC_DMA_TX_STAT_IDLEWAIT || | |
67 | val == BGMAC_DMA_TX_STAT_STOPPED) { | |
68 | i = 0; | |
69 | break; | |
70 | } | |
71 | udelay(10); | |
72 | } | |
73 | if (i) | |
74 | bgmac_err(bgmac, "Timeout suspending DMA TX ring 0x%X (BGMAC_DMA_TX_STAT: 0x%08X)\n", | |
75 | ring->mmio_base, val); | |
76 | ||
77 | /* Remove SUSPEND bit */ | |
78 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, 0); | |
79 | if (!bgmac_wait_value(bgmac->core, | |
80 | ring->mmio_base + BGMAC_DMA_TX_STATUS, | |
81 | BGMAC_DMA_TX_STAT, BGMAC_DMA_TX_STAT_DISABLED, | |
82 | 10000)) { | |
83 | bgmac_warn(bgmac, "DMA TX ring 0x%X wasn't disabled on time, waiting additional 300us\n", | |
84 | ring->mmio_base); | |
85 | udelay(300); | |
86 | val = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS); | |
87 | if ((val & BGMAC_DMA_TX_STAT) != BGMAC_DMA_TX_STAT_DISABLED) | |
88 | bgmac_err(bgmac, "Reset of DMA TX ring 0x%X failed\n", | |
89 | ring->mmio_base); | |
90 | } | |
91 | } | |
92 | ||
93 | static void bgmac_dma_tx_enable(struct bgmac *bgmac, | |
94 | struct bgmac_dma_ring *ring) | |
95 | { | |
96 | u32 ctl; | |
97 | ||
98 | ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL); | |
99 | ctl |= BGMAC_DMA_TX_ENABLE; | |
100 | ctl |= BGMAC_DMA_TX_PARITY_DISABLE; | |
101 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, ctl); | |
102 | } | |
103 | ||
104 | static netdev_tx_t bgmac_dma_tx_add(struct bgmac *bgmac, | |
105 | struct bgmac_dma_ring *ring, | |
106 | struct sk_buff *skb) | |
107 | { | |
108 | struct device *dma_dev = bgmac->core->dma_dev; | |
109 | struct net_device *net_dev = bgmac->net_dev; | |
110 | struct bgmac_dma_desc *dma_desc; | |
111 | struct bgmac_slot_info *slot; | |
112 | u32 ctl0, ctl1; | |
113 | int free_slots; | |
114 | ||
115 | if (skb->len > BGMAC_DESC_CTL1_LEN) { | |
116 | bgmac_err(bgmac, "Too long skb (%d)\n", skb->len); | |
117 | goto err_stop_drop; | |
118 | } | |
119 | ||
120 | if (ring->start <= ring->end) | |
121 | free_slots = ring->start - ring->end + BGMAC_TX_RING_SLOTS; | |
122 | else | |
123 | free_slots = ring->start - ring->end; | |
124 | if (free_slots == 1) { | |
125 | bgmac_err(bgmac, "TX ring is full, queue should be stopped!\n"); | |
126 | netif_stop_queue(net_dev); | |
127 | return NETDEV_TX_BUSY; | |
128 | } | |
129 | ||
130 | slot = &ring->slots[ring->end]; | |
131 | slot->skb = skb; | |
132 | slot->dma_addr = dma_map_single(dma_dev, skb->data, skb->len, | |
133 | DMA_TO_DEVICE); | |
134 | if (dma_mapping_error(dma_dev, slot->dma_addr)) { | |
135 | bgmac_err(bgmac, "Mapping error of skb on ring 0x%X\n", | |
136 | ring->mmio_base); | |
137 | goto err_stop_drop; | |
138 | } | |
139 | ||
140 | ctl0 = BGMAC_DESC_CTL0_IOC | BGMAC_DESC_CTL0_SOF | BGMAC_DESC_CTL0_EOF; | |
141 | if (ring->end == ring->num_slots - 1) | |
142 | ctl0 |= BGMAC_DESC_CTL0_EOT; | |
143 | ctl1 = skb->len & BGMAC_DESC_CTL1_LEN; | |
144 | ||
145 | dma_desc = ring->cpu_base; | |
146 | dma_desc += ring->end; | |
147 | dma_desc->addr_low = cpu_to_le32(lower_32_bits(slot->dma_addr)); | |
148 | dma_desc->addr_high = cpu_to_le32(upper_32_bits(slot->dma_addr)); | |
149 | dma_desc->ctl0 = cpu_to_le32(ctl0); | |
150 | dma_desc->ctl1 = cpu_to_le32(ctl1); | |
151 | ||
152 | wmb(); | |
153 | ||
154 | /* Increase ring->end to point empty slot. We tell hardware the first | |
155 | * slot it should *not* read. | |
156 | */ | |
157 | if (++ring->end >= BGMAC_TX_RING_SLOTS) | |
158 | ring->end = 0; | |
159 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_INDEX, | |
160 | ring->end * sizeof(struct bgmac_dma_desc)); | |
161 | ||
162 | /* Always keep one slot free to allow detecting bugged calls. */ | |
163 | if (--free_slots == 1) | |
164 | netif_stop_queue(net_dev); | |
165 | ||
166 | return NETDEV_TX_OK; | |
167 | ||
168 | err_stop_drop: | |
169 | netif_stop_queue(net_dev); | |
170 | dev_kfree_skb(skb); | |
171 | return NETDEV_TX_OK; | |
172 | } | |
173 | ||
174 | /* Free transmitted packets */ | |
175 | static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring) | |
176 | { | |
177 | struct device *dma_dev = bgmac->core->dma_dev; | |
178 | int empty_slot; | |
179 | bool freed = false; | |
180 | ||
181 | /* The last slot that hardware didn't consume yet */ | |
182 | empty_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS); | |
183 | empty_slot &= BGMAC_DMA_TX_STATDPTR; | |
184 | empty_slot /= sizeof(struct bgmac_dma_desc); | |
185 | ||
186 | while (ring->start != empty_slot) { | |
187 | struct bgmac_slot_info *slot = &ring->slots[ring->start]; | |
188 | ||
189 | if (slot->skb) { | |
190 | /* Unmap no longer used buffer */ | |
191 | dma_unmap_single(dma_dev, slot->dma_addr, | |
192 | slot->skb->len, DMA_TO_DEVICE); | |
193 | slot->dma_addr = 0; | |
194 | ||
195 | /* Free memory! :) */ | |
196 | dev_kfree_skb(slot->skb); | |
197 | slot->skb = NULL; | |
198 | } else { | |
199 | bgmac_err(bgmac, "Hardware reported transmission for empty TX ring slot %d! End of ring: %d\n", | |
200 | ring->start, ring->end); | |
201 | } | |
202 | ||
203 | if (++ring->start >= BGMAC_TX_RING_SLOTS) | |
204 | ring->start = 0; | |
205 | freed = true; | |
206 | } | |
207 | ||
208 | if (freed && netif_queue_stopped(bgmac->net_dev)) | |
209 | netif_wake_queue(bgmac->net_dev); | |
210 | } | |
211 | ||
212 | static void bgmac_dma_rx_reset(struct bgmac *bgmac, struct bgmac_dma_ring *ring) | |
213 | { | |
214 | if (!ring->mmio_base) | |
215 | return; | |
216 | ||
217 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, 0); | |
218 | if (!bgmac_wait_value(bgmac->core, | |
219 | ring->mmio_base + BGMAC_DMA_RX_STATUS, | |
220 | BGMAC_DMA_RX_STAT, BGMAC_DMA_RX_STAT_DISABLED, | |
221 | 10000)) | |
222 | bgmac_err(bgmac, "Reset of ring 0x%X RX failed\n", | |
223 | ring->mmio_base); | |
224 | } | |
225 | ||
226 | static void bgmac_dma_rx_enable(struct bgmac *bgmac, | |
227 | struct bgmac_dma_ring *ring) | |
228 | { | |
229 | u32 ctl; | |
230 | ||
231 | ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL); | |
232 | ctl &= BGMAC_DMA_RX_ADDREXT_MASK; | |
233 | ctl |= BGMAC_DMA_RX_ENABLE; | |
234 | ctl |= BGMAC_DMA_RX_PARITY_DISABLE; | |
235 | ctl |= BGMAC_DMA_RX_OVERFLOW_CONT; | |
236 | ctl |= BGMAC_RX_FRAME_OFFSET << BGMAC_DMA_RX_FRAME_OFFSET_SHIFT; | |
237 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, ctl); | |
238 | } | |
239 | ||
240 | static int bgmac_dma_rx_skb_for_slot(struct bgmac *bgmac, | |
241 | struct bgmac_slot_info *slot) | |
242 | { | |
243 | struct device *dma_dev = bgmac->core->dma_dev; | |
244 | struct bgmac_rx_header *rx; | |
245 | ||
246 | /* Alloc skb */ | |
247 | slot->skb = netdev_alloc_skb(bgmac->net_dev, BGMAC_RX_BUF_SIZE); | |
720a43ef | 248 | if (!slot->skb) |
dd4544f0 | 249 | return -ENOMEM; |
dd4544f0 RM |
250 | |
251 | /* Poison - if everything goes fine, hardware will overwrite it */ | |
252 | rx = (struct bgmac_rx_header *)slot->skb->data; | |
253 | rx->len = cpu_to_le16(0xdead); | |
254 | rx->flags = cpu_to_le16(0xbeef); | |
255 | ||
256 | /* Map skb for the DMA */ | |
257 | slot->dma_addr = dma_map_single(dma_dev, slot->skb->data, | |
258 | BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); | |
259 | if (dma_mapping_error(dma_dev, slot->dma_addr)) { | |
260 | bgmac_err(bgmac, "DMA mapping error\n"); | |
261 | return -ENOMEM; | |
262 | } | |
263 | if (slot->dma_addr & 0xC0000000) | |
264 | bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n"); | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
269 | static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring, | |
270 | int weight) | |
271 | { | |
272 | u32 end_slot; | |
273 | int handled = 0; | |
274 | ||
275 | end_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_STATUS); | |
276 | end_slot &= BGMAC_DMA_RX_STATDPTR; | |
277 | end_slot /= sizeof(struct bgmac_dma_desc); | |
278 | ||
279 | ring->end = end_slot; | |
280 | ||
281 | while (ring->start != ring->end) { | |
282 | struct device *dma_dev = bgmac->core->dma_dev; | |
283 | struct bgmac_slot_info *slot = &ring->slots[ring->start]; | |
284 | struct sk_buff *skb = slot->skb; | |
285 | struct sk_buff *new_skb; | |
286 | struct bgmac_rx_header *rx; | |
287 | u16 len, flags; | |
288 | ||
289 | /* Unmap buffer to make it accessible to the CPU */ | |
290 | dma_sync_single_for_cpu(dma_dev, slot->dma_addr, | |
291 | BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); | |
292 | ||
293 | /* Get info from the header */ | |
294 | rx = (struct bgmac_rx_header *)skb->data; | |
295 | len = le16_to_cpu(rx->len); | |
296 | flags = le16_to_cpu(rx->flags); | |
297 | ||
298 | /* Check for poison and drop or pass the packet */ | |
299 | if (len == 0xdead && flags == 0xbeef) { | |
300 | bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n", | |
301 | ring->start); | |
302 | } else { | |
02e71127 HM |
303 | /* Omit CRC. */ |
304 | len -= ETH_FCS_LEN; | |
305 | ||
885d2994 | 306 | new_skb = netdev_alloc_skb_ip_align(bgmac->net_dev, len); |
dd4544f0 RM |
307 | if (new_skb) { |
308 | skb_put(new_skb, len); | |
309 | skb_copy_from_linear_data_offset(skb, BGMAC_RX_FRAME_OFFSET, | |
310 | new_skb->data, | |
311 | len); | |
02e71127 | 312 | skb_checksum_none_assert(skb); |
dd4544f0 RM |
313 | new_skb->protocol = |
314 | eth_type_trans(new_skb, bgmac->net_dev); | |
315 | netif_receive_skb(new_skb); | |
316 | handled++; | |
317 | } else { | |
318 | bgmac->net_dev->stats.rx_dropped++; | |
319 | bgmac_err(bgmac, "Allocation of skb for copying packet failed!\n"); | |
320 | } | |
321 | ||
322 | /* Poison the old skb */ | |
323 | rx->len = cpu_to_le16(0xdead); | |
324 | rx->flags = cpu_to_le16(0xbeef); | |
325 | } | |
326 | ||
327 | /* Make it back accessible to the hardware */ | |
328 | dma_sync_single_for_device(dma_dev, slot->dma_addr, | |
329 | BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); | |
330 | ||
331 | if (++ring->start >= BGMAC_RX_RING_SLOTS) | |
332 | ring->start = 0; | |
333 | ||
334 | if (handled >= weight) /* Should never be greater */ | |
335 | break; | |
336 | } | |
337 | ||
338 | return handled; | |
339 | } | |
340 | ||
341 | /* Does ring support unaligned addressing? */ | |
342 | static bool bgmac_dma_unaligned(struct bgmac *bgmac, | |
343 | struct bgmac_dma_ring *ring, | |
344 | enum bgmac_dma_ring_type ring_type) | |
345 | { | |
346 | switch (ring_type) { | |
347 | case BGMAC_DMA_RING_TX: | |
348 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO, | |
349 | 0xff0); | |
350 | if (bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO)) | |
351 | return true; | |
352 | break; | |
353 | case BGMAC_DMA_RING_RX: | |
354 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO, | |
355 | 0xff0); | |
356 | if (bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO)) | |
357 | return true; | |
358 | break; | |
359 | } | |
360 | return false; | |
361 | } | |
362 | ||
363 | static void bgmac_dma_ring_free(struct bgmac *bgmac, | |
364 | struct bgmac_dma_ring *ring) | |
365 | { | |
366 | struct device *dma_dev = bgmac->core->dma_dev; | |
367 | struct bgmac_slot_info *slot; | |
368 | int size; | |
369 | int i; | |
370 | ||
371 | for (i = 0; i < ring->num_slots; i++) { | |
372 | slot = &ring->slots[i]; | |
373 | if (slot->skb) { | |
374 | if (slot->dma_addr) | |
375 | dma_unmap_single(dma_dev, slot->dma_addr, | |
376 | slot->skb->len, DMA_TO_DEVICE); | |
377 | dev_kfree_skb(slot->skb); | |
378 | } | |
379 | } | |
380 | ||
381 | if (ring->cpu_base) { | |
382 | /* Free ring of descriptors */ | |
383 | size = ring->num_slots * sizeof(struct bgmac_dma_desc); | |
384 | dma_free_coherent(dma_dev, size, ring->cpu_base, | |
385 | ring->dma_base); | |
386 | } | |
387 | } | |
388 | ||
389 | static void bgmac_dma_free(struct bgmac *bgmac) | |
390 | { | |
391 | int i; | |
392 | ||
393 | for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) | |
394 | bgmac_dma_ring_free(bgmac, &bgmac->tx_ring[i]); | |
395 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) | |
396 | bgmac_dma_ring_free(bgmac, &bgmac->rx_ring[i]); | |
397 | } | |
398 | ||
399 | static int bgmac_dma_alloc(struct bgmac *bgmac) | |
400 | { | |
401 | struct device *dma_dev = bgmac->core->dma_dev; | |
402 | struct bgmac_dma_ring *ring; | |
403 | static const u16 ring_base[] = { BGMAC_DMA_BASE0, BGMAC_DMA_BASE1, | |
404 | BGMAC_DMA_BASE2, BGMAC_DMA_BASE3, }; | |
405 | int size; /* ring size: different for Tx and Rx */ | |
406 | int err; | |
407 | int i; | |
408 | ||
409 | BUILD_BUG_ON(BGMAC_MAX_TX_RINGS > ARRAY_SIZE(ring_base)); | |
410 | BUILD_BUG_ON(BGMAC_MAX_RX_RINGS > ARRAY_SIZE(ring_base)); | |
411 | ||
412 | if (!(bcma_aread32(bgmac->core, BCMA_IOST) & BCMA_IOST_DMA64)) { | |
413 | bgmac_err(bgmac, "Core does not report 64-bit DMA\n"); | |
414 | return -ENOTSUPP; | |
415 | } | |
416 | ||
417 | for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) { | |
418 | ring = &bgmac->tx_ring[i]; | |
419 | ring->num_slots = BGMAC_TX_RING_SLOTS; | |
420 | ring->mmio_base = ring_base[i]; | |
421 | if (bgmac_dma_unaligned(bgmac, ring, BGMAC_DMA_RING_TX)) | |
422 | bgmac_warn(bgmac, "TX on ring 0x%X supports unaligned addressing but this feature is not implemented\n", | |
423 | ring->mmio_base); | |
424 | ||
425 | /* Alloc ring of descriptors */ | |
426 | size = ring->num_slots * sizeof(struct bgmac_dma_desc); | |
427 | ring->cpu_base = dma_zalloc_coherent(dma_dev, size, | |
428 | &ring->dma_base, | |
429 | GFP_KERNEL); | |
430 | if (!ring->cpu_base) { | |
431 | bgmac_err(bgmac, "Allocation of TX ring 0x%X failed\n", | |
432 | ring->mmio_base); | |
433 | goto err_dma_free; | |
434 | } | |
435 | if (ring->dma_base & 0xC0000000) | |
436 | bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n"); | |
437 | ||
438 | /* No need to alloc TX slots yet */ | |
439 | } | |
440 | ||
441 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) { | |
70a737b7 RM |
442 | int j; |
443 | ||
dd4544f0 RM |
444 | ring = &bgmac->rx_ring[i]; |
445 | ring->num_slots = BGMAC_RX_RING_SLOTS; | |
446 | ring->mmio_base = ring_base[i]; | |
447 | if (bgmac_dma_unaligned(bgmac, ring, BGMAC_DMA_RING_RX)) | |
448 | bgmac_warn(bgmac, "RX on ring 0x%X supports unaligned addressing but this feature is not implemented\n", | |
449 | ring->mmio_base); | |
450 | ||
451 | /* Alloc ring of descriptors */ | |
452 | size = ring->num_slots * sizeof(struct bgmac_dma_desc); | |
453 | ring->cpu_base = dma_zalloc_coherent(dma_dev, size, | |
454 | &ring->dma_base, | |
455 | GFP_KERNEL); | |
456 | if (!ring->cpu_base) { | |
457 | bgmac_err(bgmac, "Allocation of RX ring 0x%X failed\n", | |
458 | ring->mmio_base); | |
459 | err = -ENOMEM; | |
460 | goto err_dma_free; | |
461 | } | |
462 | if (ring->dma_base & 0xC0000000) | |
463 | bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n"); | |
464 | ||
465 | /* Alloc RX slots */ | |
70a737b7 RM |
466 | for (j = 0; j < ring->num_slots; j++) { |
467 | err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[j]); | |
dd4544f0 RM |
468 | if (err) { |
469 | bgmac_err(bgmac, "Can't allocate skb for slot in RX ring\n"); | |
470 | goto err_dma_free; | |
471 | } | |
472 | } | |
473 | } | |
474 | ||
475 | return 0; | |
476 | ||
477 | err_dma_free: | |
478 | bgmac_dma_free(bgmac); | |
479 | return -ENOMEM; | |
480 | } | |
481 | ||
482 | static void bgmac_dma_init(struct bgmac *bgmac) | |
483 | { | |
484 | struct bgmac_dma_ring *ring; | |
485 | struct bgmac_dma_desc *dma_desc; | |
486 | u32 ctl0, ctl1; | |
487 | int i; | |
488 | ||
489 | for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) { | |
490 | ring = &bgmac->tx_ring[i]; | |
491 | ||
492 | /* We don't implement unaligned addressing, so enable first */ | |
493 | bgmac_dma_tx_enable(bgmac, ring); | |
494 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO, | |
495 | lower_32_bits(ring->dma_base)); | |
496 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGHI, | |
497 | upper_32_bits(ring->dma_base)); | |
498 | ||
499 | ring->start = 0; | |
500 | ring->end = 0; /* Points the slot that should *not* be read */ | |
501 | } | |
502 | ||
503 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) { | |
70a737b7 RM |
504 | int j; |
505 | ||
dd4544f0 RM |
506 | ring = &bgmac->rx_ring[i]; |
507 | ||
508 | /* We don't implement unaligned addressing, so enable first */ | |
509 | bgmac_dma_rx_enable(bgmac, ring); | |
510 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO, | |
511 | lower_32_bits(ring->dma_base)); | |
512 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGHI, | |
513 | upper_32_bits(ring->dma_base)); | |
514 | ||
70a737b7 RM |
515 | for (j = 0, dma_desc = ring->cpu_base; j < ring->num_slots; |
516 | j++, dma_desc++) { | |
dd4544f0 RM |
517 | ctl0 = ctl1 = 0; |
518 | ||
70a737b7 | 519 | if (j == ring->num_slots - 1) |
dd4544f0 RM |
520 | ctl0 |= BGMAC_DESC_CTL0_EOT; |
521 | ctl1 |= BGMAC_RX_BUF_SIZE & BGMAC_DESC_CTL1_LEN; | |
522 | /* Is there any BGMAC device that requires extension? */ | |
523 | /* ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT) & | |
524 | * B43_DMA64_DCTL1_ADDREXT_MASK; | |
525 | */ | |
526 | ||
70a737b7 RM |
527 | dma_desc->addr_low = cpu_to_le32(lower_32_bits(ring->slots[j].dma_addr)); |
528 | dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[j].dma_addr)); | |
dd4544f0 RM |
529 | dma_desc->ctl0 = cpu_to_le32(ctl0); |
530 | dma_desc->ctl1 = cpu_to_le32(ctl1); | |
531 | } | |
532 | ||
533 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX, | |
534 | ring->num_slots * sizeof(struct bgmac_dma_desc)); | |
535 | ||
536 | ring->start = 0; | |
537 | ring->end = 0; | |
538 | } | |
539 | } | |
540 | ||
541 | /************************************************** | |
542 | * PHY ops | |
543 | **************************************************/ | |
544 | ||
217a55a3 | 545 | static u16 bgmac_phy_read(struct bgmac *bgmac, u8 phyaddr, u8 reg) |
dd4544f0 RM |
546 | { |
547 | struct bcma_device *core; | |
548 | u16 phy_access_addr; | |
549 | u16 phy_ctl_addr; | |
550 | u32 tmp; | |
551 | ||
552 | BUILD_BUG_ON(BGMAC_PA_DATA_MASK != BCMA_GMAC_CMN_PA_DATA_MASK); | |
553 | BUILD_BUG_ON(BGMAC_PA_ADDR_MASK != BCMA_GMAC_CMN_PA_ADDR_MASK); | |
554 | BUILD_BUG_ON(BGMAC_PA_ADDR_SHIFT != BCMA_GMAC_CMN_PA_ADDR_SHIFT); | |
555 | BUILD_BUG_ON(BGMAC_PA_REG_MASK != BCMA_GMAC_CMN_PA_REG_MASK); | |
556 | BUILD_BUG_ON(BGMAC_PA_REG_SHIFT != BCMA_GMAC_CMN_PA_REG_SHIFT); | |
557 | BUILD_BUG_ON(BGMAC_PA_WRITE != BCMA_GMAC_CMN_PA_WRITE); | |
558 | BUILD_BUG_ON(BGMAC_PA_START != BCMA_GMAC_CMN_PA_START); | |
559 | BUILD_BUG_ON(BGMAC_PC_EPA_MASK != BCMA_GMAC_CMN_PC_EPA_MASK); | |
560 | BUILD_BUG_ON(BGMAC_PC_MCT_MASK != BCMA_GMAC_CMN_PC_MCT_MASK); | |
561 | BUILD_BUG_ON(BGMAC_PC_MCT_SHIFT != BCMA_GMAC_CMN_PC_MCT_SHIFT); | |
562 | BUILD_BUG_ON(BGMAC_PC_MTE != BCMA_GMAC_CMN_PC_MTE); | |
563 | ||
564 | if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT) { | |
565 | core = bgmac->core->bus->drv_gmac_cmn.core; | |
566 | phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS; | |
567 | phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL; | |
568 | } else { | |
569 | core = bgmac->core; | |
570 | phy_access_addr = BGMAC_PHY_ACCESS; | |
571 | phy_ctl_addr = BGMAC_PHY_CNTL; | |
572 | } | |
573 | ||
574 | tmp = bcma_read32(core, phy_ctl_addr); | |
575 | tmp &= ~BGMAC_PC_EPA_MASK; | |
576 | tmp |= phyaddr; | |
577 | bcma_write32(core, phy_ctl_addr, tmp); | |
578 | ||
579 | tmp = BGMAC_PA_START; | |
580 | tmp |= phyaddr << BGMAC_PA_ADDR_SHIFT; | |
581 | tmp |= reg << BGMAC_PA_REG_SHIFT; | |
582 | bcma_write32(core, phy_access_addr, tmp); | |
583 | ||
584 | if (!bgmac_wait_value(core, phy_access_addr, BGMAC_PA_START, 0, 1000)) { | |
585 | bgmac_err(bgmac, "Reading PHY %d register 0x%X failed\n", | |
586 | phyaddr, reg); | |
587 | return 0xffff; | |
588 | } | |
589 | ||
590 | return bcma_read32(core, phy_access_addr) & BGMAC_PA_DATA_MASK; | |
591 | } | |
592 | ||
593 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphywr */ | |
217a55a3 | 594 | static int bgmac_phy_write(struct bgmac *bgmac, u8 phyaddr, u8 reg, u16 value) |
dd4544f0 RM |
595 | { |
596 | struct bcma_device *core; | |
597 | u16 phy_access_addr; | |
598 | u16 phy_ctl_addr; | |
599 | u32 tmp; | |
600 | ||
601 | if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT) { | |
602 | core = bgmac->core->bus->drv_gmac_cmn.core; | |
603 | phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS; | |
604 | phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL; | |
605 | } else { | |
606 | core = bgmac->core; | |
607 | phy_access_addr = BGMAC_PHY_ACCESS; | |
608 | phy_ctl_addr = BGMAC_PHY_CNTL; | |
609 | } | |
610 | ||
611 | tmp = bcma_read32(core, phy_ctl_addr); | |
612 | tmp &= ~BGMAC_PC_EPA_MASK; | |
613 | tmp |= phyaddr; | |
614 | bcma_write32(core, phy_ctl_addr, tmp); | |
615 | ||
616 | bgmac_write(bgmac, BGMAC_INT_STATUS, BGMAC_IS_MDIO); | |
617 | if (bgmac_read(bgmac, BGMAC_INT_STATUS) & BGMAC_IS_MDIO) | |
618 | bgmac_warn(bgmac, "Error setting MDIO int\n"); | |
619 | ||
620 | tmp = BGMAC_PA_START; | |
621 | tmp |= BGMAC_PA_WRITE; | |
622 | tmp |= phyaddr << BGMAC_PA_ADDR_SHIFT; | |
623 | tmp |= reg << BGMAC_PA_REG_SHIFT; | |
624 | tmp |= value; | |
625 | bcma_write32(core, phy_access_addr, tmp); | |
626 | ||
217a55a3 | 627 | if (!bgmac_wait_value(core, phy_access_addr, BGMAC_PA_START, 0, 1000)) { |
dd4544f0 RM |
628 | bgmac_err(bgmac, "Writing to PHY %d register 0x%X failed\n", |
629 | phyaddr, reg); | |
217a55a3 RM |
630 | return -ETIMEDOUT; |
631 | } | |
632 | ||
633 | return 0; | |
dd4544f0 RM |
634 | } |
635 | ||
636 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyforce */ | |
637 | static void bgmac_phy_force(struct bgmac *bgmac) | |
638 | { | |
639 | u16 ctl; | |
640 | u16 mask = ~(BGMAC_PHY_CTL_SPEED | BGMAC_PHY_CTL_SPEED_MSB | | |
641 | BGMAC_PHY_CTL_ANENAB | BGMAC_PHY_CTL_DUPLEX); | |
642 | ||
643 | if (bgmac->phyaddr == BGMAC_PHY_NOREGS) | |
644 | return; | |
645 | ||
646 | if (bgmac->autoneg) | |
647 | return; | |
648 | ||
649 | ctl = bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL); | |
650 | ctl &= mask; | |
651 | if (bgmac->full_duplex) | |
652 | ctl |= BGMAC_PHY_CTL_DUPLEX; | |
653 | if (bgmac->speed == BGMAC_SPEED_100) | |
654 | ctl |= BGMAC_PHY_CTL_SPEED_100; | |
655 | else if (bgmac->speed == BGMAC_SPEED_1000) | |
656 | ctl |= BGMAC_PHY_CTL_SPEED_1000; | |
657 | bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL, ctl); | |
658 | } | |
659 | ||
660 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyadvertise */ | |
661 | static void bgmac_phy_advertise(struct bgmac *bgmac) | |
662 | { | |
663 | u16 adv; | |
664 | ||
665 | if (bgmac->phyaddr == BGMAC_PHY_NOREGS) | |
666 | return; | |
667 | ||
668 | if (!bgmac->autoneg) | |
669 | return; | |
670 | ||
671 | /* Adv selected 10/100 speeds */ | |
672 | adv = bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_ADV); | |
673 | adv &= ~(BGMAC_PHY_ADV_10HALF | BGMAC_PHY_ADV_10FULL | | |
674 | BGMAC_PHY_ADV_100HALF | BGMAC_PHY_ADV_100FULL); | |
675 | if (!bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_10) | |
676 | adv |= BGMAC_PHY_ADV_10HALF; | |
677 | if (!bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_100) | |
678 | adv |= BGMAC_PHY_ADV_100HALF; | |
679 | if (bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_10) | |
680 | adv |= BGMAC_PHY_ADV_10FULL; | |
681 | if (bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_100) | |
682 | adv |= BGMAC_PHY_ADV_100FULL; | |
683 | bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_ADV, adv); | |
684 | ||
685 | /* Adv selected 1000 speeds */ | |
686 | adv = bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_ADV2); | |
687 | adv &= ~(BGMAC_PHY_ADV2_1000HALF | BGMAC_PHY_ADV2_1000FULL); | |
688 | if (!bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_1000) | |
689 | adv |= BGMAC_PHY_ADV2_1000HALF; | |
690 | if (bgmac->full_duplex && bgmac->speed & BGMAC_SPEED_1000) | |
691 | adv |= BGMAC_PHY_ADV2_1000FULL; | |
692 | bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_ADV2, adv); | |
693 | ||
694 | /* Restart */ | |
695 | bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL, | |
696 | bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL) | | |
697 | BGMAC_PHY_CTL_RESTART); | |
698 | } | |
699 | ||
700 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyinit */ | |
701 | static void bgmac_phy_init(struct bgmac *bgmac) | |
702 | { | |
703 | struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo; | |
704 | struct bcma_drv_cc *cc = &bgmac->core->bus->drv_cc; | |
705 | u8 i; | |
706 | ||
707 | if (ci->id == BCMA_CHIP_ID_BCM5356) { | |
708 | for (i = 0; i < 5; i++) { | |
709 | bgmac_phy_write(bgmac, i, 0x1f, 0x008b); | |
710 | bgmac_phy_write(bgmac, i, 0x15, 0x0100); | |
711 | bgmac_phy_write(bgmac, i, 0x1f, 0x000f); | |
712 | bgmac_phy_write(bgmac, i, 0x12, 0x2aaa); | |
713 | bgmac_phy_write(bgmac, i, 0x1f, 0x000b); | |
714 | } | |
715 | } | |
716 | if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg != 10) || | |
717 | (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg != 10) || | |
718 | (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg != 9)) { | |
719 | bcma_chipco_chipctl_maskset(cc, 2, ~0xc0000000, 0); | |
720 | bcma_chipco_chipctl_maskset(cc, 4, ~0x80000000, 0); | |
721 | for (i = 0; i < 5; i++) { | |
722 | bgmac_phy_write(bgmac, i, 0x1f, 0x000f); | |
723 | bgmac_phy_write(bgmac, i, 0x16, 0x5284); | |
724 | bgmac_phy_write(bgmac, i, 0x1f, 0x000b); | |
725 | bgmac_phy_write(bgmac, i, 0x17, 0x0010); | |
726 | bgmac_phy_write(bgmac, i, 0x1f, 0x000f); | |
727 | bgmac_phy_write(bgmac, i, 0x16, 0x5296); | |
728 | bgmac_phy_write(bgmac, i, 0x17, 0x1073); | |
729 | bgmac_phy_write(bgmac, i, 0x17, 0x9073); | |
730 | bgmac_phy_write(bgmac, i, 0x16, 0x52b6); | |
731 | bgmac_phy_write(bgmac, i, 0x17, 0x9273); | |
732 | bgmac_phy_write(bgmac, i, 0x1f, 0x000b); | |
733 | } | |
734 | } | |
735 | } | |
736 | ||
737 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */ | |
738 | static void bgmac_phy_reset(struct bgmac *bgmac) | |
739 | { | |
740 | if (bgmac->phyaddr == BGMAC_PHY_NOREGS) | |
741 | return; | |
742 | ||
743 | bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL, | |
744 | BGMAC_PHY_CTL_RESET); | |
745 | udelay(100); | |
746 | if (bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL) & | |
747 | BGMAC_PHY_CTL_RESET) | |
748 | bgmac_err(bgmac, "PHY reset failed\n"); | |
749 | bgmac_phy_init(bgmac); | |
750 | } | |
751 | ||
752 | /************************************************** | |
753 | * Chip ops | |
754 | **************************************************/ | |
755 | ||
756 | /* TODO: can we just drop @force? Can we don't reset MAC at all if there is | |
757 | * nothing to change? Try if after stabilizng driver. | |
758 | */ | |
759 | static void bgmac_cmdcfg_maskset(struct bgmac *bgmac, u32 mask, u32 set, | |
760 | bool force) | |
761 | { | |
762 | u32 cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG); | |
763 | u32 new_val = (cmdcfg & mask) | set; | |
764 | ||
765 | bgmac_set(bgmac, BGMAC_CMDCFG, BGMAC_CMDCFG_SR); | |
766 | udelay(2); | |
767 | ||
768 | if (new_val != cmdcfg || force) | |
769 | bgmac_write(bgmac, BGMAC_CMDCFG, new_val); | |
770 | ||
771 | bgmac_mask(bgmac, BGMAC_CMDCFG, ~BGMAC_CMDCFG_SR); | |
772 | udelay(2); | |
773 | } | |
774 | ||
4e209001 HM |
775 | static void bgmac_write_mac_address(struct bgmac *bgmac, u8 *addr) |
776 | { | |
777 | u32 tmp; | |
778 | ||
779 | tmp = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; | |
780 | bgmac_write(bgmac, BGMAC_MACADDR_HIGH, tmp); | |
781 | tmp = (addr[4] << 8) | addr[5]; | |
782 | bgmac_write(bgmac, BGMAC_MACADDR_LOW, tmp); | |
783 | } | |
784 | ||
c6edfe10 HM |
785 | static void bgmac_set_rx_mode(struct net_device *net_dev) |
786 | { | |
787 | struct bgmac *bgmac = netdev_priv(net_dev); | |
788 | ||
789 | if (net_dev->flags & IFF_PROMISC) | |
e9ba1039 | 790 | bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_PROM, true); |
c6edfe10 | 791 | else |
e9ba1039 | 792 | bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_PROM, 0, true); |
c6edfe10 HM |
793 | } |
794 | ||
dd4544f0 RM |
795 | #if 0 /* We don't use that regs yet */ |
796 | static void bgmac_chip_stats_update(struct bgmac *bgmac) | |
797 | { | |
798 | int i; | |
799 | ||
800 | if (bgmac->core->id.id != BCMA_CORE_4706_MAC_GBIT) { | |
801 | for (i = 0; i < BGMAC_NUM_MIB_TX_REGS; i++) | |
802 | bgmac->mib_tx_regs[i] = | |
803 | bgmac_read(bgmac, | |
804 | BGMAC_TX_GOOD_OCTETS + (i * 4)); | |
805 | for (i = 0; i < BGMAC_NUM_MIB_RX_REGS; i++) | |
806 | bgmac->mib_rx_regs[i] = | |
807 | bgmac_read(bgmac, | |
808 | BGMAC_RX_GOOD_OCTETS + (i * 4)); | |
809 | } | |
810 | ||
811 | /* TODO: what else? how to handle BCM4706? Specs are needed */ | |
812 | } | |
813 | #endif | |
814 | ||
815 | static void bgmac_clear_mib(struct bgmac *bgmac) | |
816 | { | |
817 | int i; | |
818 | ||
819 | if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT) | |
820 | return; | |
821 | ||
822 | bgmac_set(bgmac, BGMAC_DEV_CTL, BGMAC_DC_MROR); | |
823 | for (i = 0; i < BGMAC_NUM_MIB_TX_REGS; i++) | |
824 | bgmac_read(bgmac, BGMAC_TX_GOOD_OCTETS + (i * 4)); | |
825 | for (i = 0; i < BGMAC_NUM_MIB_RX_REGS; i++) | |
826 | bgmac_read(bgmac, BGMAC_RX_GOOD_OCTETS + (i * 4)); | |
827 | } | |
828 | ||
829 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_speed */ | |
830 | static void bgmac_speed(struct bgmac *bgmac, int speed) | |
831 | { | |
832 | u32 mask = ~(BGMAC_CMDCFG_ES_MASK | BGMAC_CMDCFG_HD); | |
833 | u32 set = 0; | |
834 | ||
835 | if (speed & BGMAC_SPEED_10) | |
836 | set |= BGMAC_CMDCFG_ES_10; | |
837 | if (speed & BGMAC_SPEED_100) | |
838 | set |= BGMAC_CMDCFG_ES_100; | |
839 | if (speed & BGMAC_SPEED_1000) | |
840 | set |= BGMAC_CMDCFG_ES_1000; | |
841 | if (!bgmac->full_duplex) | |
842 | set |= BGMAC_CMDCFG_HD; | |
843 | bgmac_cmdcfg_maskset(bgmac, mask, set, true); | |
844 | } | |
845 | ||
846 | static void bgmac_miiconfig(struct bgmac *bgmac) | |
847 | { | |
848 | u8 imode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >> | |
849 | BGMAC_DS_MM_SHIFT; | |
850 | if (imode == 0 || imode == 1) { | |
851 | if (bgmac->autoneg) | |
852 | bgmac_speed(bgmac, BGMAC_SPEED_100); | |
853 | else | |
854 | bgmac_speed(bgmac, bgmac->speed); | |
855 | } | |
856 | } | |
857 | ||
858 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipreset */ | |
859 | static void bgmac_chip_reset(struct bgmac *bgmac) | |
860 | { | |
861 | struct bcma_device *core = bgmac->core; | |
862 | struct bcma_bus *bus = core->bus; | |
863 | struct bcma_chipinfo *ci = &bus->chipinfo; | |
864 | u32 flags = 0; | |
865 | u32 iost; | |
866 | int i; | |
867 | ||
868 | if (bcma_core_is_enabled(core)) { | |
869 | if (!bgmac->stats_grabbed) { | |
870 | /* bgmac_chip_stats_update(bgmac); */ | |
871 | bgmac->stats_grabbed = true; | |
872 | } | |
873 | ||
874 | for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) | |
875 | bgmac_dma_tx_reset(bgmac, &bgmac->tx_ring[i]); | |
876 | ||
877 | bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false); | |
878 | udelay(1); | |
879 | ||
880 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) | |
881 | bgmac_dma_rx_reset(bgmac, &bgmac->rx_ring[i]); | |
882 | ||
883 | /* TODO: Clear software multicast filter list */ | |
884 | } | |
885 | ||
886 | iost = bcma_aread32(core, BCMA_IOST); | |
887 | if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == 10) || | |
888 | (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg == 10) || | |
889 | (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == 9)) | |
890 | iost &= ~BGMAC_BCMA_IOST_ATTACHED; | |
891 | ||
892 | if (iost & BGMAC_BCMA_IOST_ATTACHED) { | |
893 | flags = BGMAC_BCMA_IOCTL_SW_CLKEN; | |
894 | if (!bgmac->has_robosw) | |
895 | flags |= BGMAC_BCMA_IOCTL_SW_RESET; | |
896 | } | |
897 | ||
898 | bcma_core_enable(core, flags); | |
899 | ||
900 | if (core->id.rev > 2) { | |
901 | bgmac_set(bgmac, BCMA_CLKCTLST, 1 << 8); | |
902 | bgmac_wait_value(bgmac->core, BCMA_CLKCTLST, 1 << 24, 1 << 24, | |
903 | 1000); | |
904 | } | |
905 | ||
906 | if (ci->id == BCMA_CHIP_ID_BCM5357 || ci->id == BCMA_CHIP_ID_BCM4749 || | |
907 | ci->id == BCMA_CHIP_ID_BCM53572) { | |
908 | struct bcma_drv_cc *cc = &bgmac->core->bus->drv_cc; | |
909 | u8 et_swtype = 0; | |
910 | u8 sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHY | | |
86f7c995 | 911 | BGMAC_CHIPCTL_1_IF_TYPE_MII; |
dd4544f0 RM |
912 | char buf[2]; |
913 | ||
edb15d83 | 914 | if (bcm47xx_nvram_getenv("et_swtype", buf, 1) > 0) { |
dd4544f0 RM |
915 | if (kstrtou8(buf, 0, &et_swtype)) |
916 | bgmac_err(bgmac, "Failed to parse et_swtype (%s)\n", | |
917 | buf); | |
918 | et_swtype &= 0x0f; | |
919 | et_swtype <<= 4; | |
920 | sw_type = et_swtype; | |
921 | } else if (ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == 9) { | |
922 | sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII; | |
b5a4c2f3 HM |
923 | } else if ((ci->id != BCMA_CHIP_ID_BCM53572 && ci->pkg == 10) || |
924 | (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == 9)) { | |
925 | sw_type = BGMAC_CHIPCTL_1_IF_TYPE_RGMII | | |
926 | BGMAC_CHIPCTL_1_SW_TYPE_RGMII; | |
dd4544f0 RM |
927 | } |
928 | bcma_chipco_chipctl_maskset(cc, 1, | |
929 | ~(BGMAC_CHIPCTL_1_IF_TYPE_MASK | | |
930 | BGMAC_CHIPCTL_1_SW_TYPE_MASK), | |
931 | sw_type); | |
932 | } | |
933 | ||
934 | if (iost & BGMAC_BCMA_IOST_ATTACHED && !bgmac->has_robosw) | |
935 | bcma_awrite32(core, BCMA_IOCTL, | |
936 | bcma_aread32(core, BCMA_IOCTL) & | |
937 | ~BGMAC_BCMA_IOCTL_SW_RESET); | |
938 | ||
939 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_reset | |
940 | * Specs don't say about using BGMAC_CMDCFG_SR, but in this routine | |
941 | * BGMAC_CMDCFG is read _after_ putting chip in a reset. So it has to | |
942 | * be keps until taking MAC out of the reset. | |
943 | */ | |
944 | bgmac_cmdcfg_maskset(bgmac, | |
945 | ~(BGMAC_CMDCFG_TE | | |
946 | BGMAC_CMDCFG_RE | | |
947 | BGMAC_CMDCFG_RPI | | |
948 | BGMAC_CMDCFG_TAI | | |
949 | BGMAC_CMDCFG_HD | | |
950 | BGMAC_CMDCFG_ML | | |
951 | BGMAC_CMDCFG_CFE | | |
952 | BGMAC_CMDCFG_RL | | |
953 | BGMAC_CMDCFG_RED | | |
954 | BGMAC_CMDCFG_PE | | |
955 | BGMAC_CMDCFG_TPI | | |
956 | BGMAC_CMDCFG_PAD_EN | | |
957 | BGMAC_CMDCFG_PF), | |
958 | BGMAC_CMDCFG_PROM | | |
959 | BGMAC_CMDCFG_NLC | | |
960 | BGMAC_CMDCFG_CFE | | |
961 | BGMAC_CMDCFG_SR, | |
962 | false); | |
963 | ||
964 | bgmac_clear_mib(bgmac); | |
965 | if (core->id.id == BCMA_CORE_4706_MAC_GBIT) | |
966 | bcma_maskset32(bgmac->cmn, BCMA_GMAC_CMN_PHY_CTL, ~0, | |
967 | BCMA_GMAC_CMN_PC_MTE); | |
968 | else | |
969 | bgmac_set(bgmac, BGMAC_PHY_CNTL, BGMAC_PC_MTE); | |
970 | bgmac_miiconfig(bgmac); | |
971 | bgmac_phy_init(bgmac); | |
972 | ||
973 | bgmac->int_status = 0; | |
974 | } | |
975 | ||
976 | static void bgmac_chip_intrs_on(struct bgmac *bgmac) | |
977 | { | |
978 | bgmac_write(bgmac, BGMAC_INT_MASK, bgmac->int_mask); | |
979 | } | |
980 | ||
981 | static void bgmac_chip_intrs_off(struct bgmac *bgmac) | |
982 | { | |
983 | bgmac_write(bgmac, BGMAC_INT_MASK, 0); | |
4160815f | 984 | bgmac_read(bgmac, BGMAC_INT_MASK); |
dd4544f0 RM |
985 | } |
986 | ||
987 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_enable */ | |
988 | static void bgmac_enable(struct bgmac *bgmac) | |
989 | { | |
990 | struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo; | |
991 | u32 cmdcfg; | |
992 | u32 mode; | |
993 | u32 rxq_ctl; | |
994 | u32 fl_ctl; | |
995 | u16 bp_clk; | |
996 | u8 mdp; | |
997 | ||
998 | cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG); | |
999 | bgmac_cmdcfg_maskset(bgmac, ~(BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE), | |
1000 | BGMAC_CMDCFG_SR, true); | |
1001 | udelay(2); | |
1002 | cmdcfg |= BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE; | |
1003 | bgmac_write(bgmac, BGMAC_CMDCFG, cmdcfg); | |
1004 | ||
1005 | mode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >> | |
1006 | BGMAC_DS_MM_SHIFT; | |
1007 | if (ci->id != BCMA_CHIP_ID_BCM47162 || mode != 0) | |
1008 | bgmac_set(bgmac, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT); | |
1009 | if (ci->id == BCMA_CHIP_ID_BCM47162 && mode == 2) | |
1010 | bcma_chipco_chipctl_maskset(&bgmac->core->bus->drv_cc, 1, ~0, | |
1011 | BGMAC_CHIPCTL_1_RXC_DLL_BYPASS); | |
1012 | ||
1013 | switch (ci->id) { | |
1014 | case BCMA_CHIP_ID_BCM5357: | |
1015 | case BCMA_CHIP_ID_BCM4749: | |
1016 | case BCMA_CHIP_ID_BCM53572: | |
1017 | case BCMA_CHIP_ID_BCM4716: | |
1018 | case BCMA_CHIP_ID_BCM47162: | |
1019 | fl_ctl = 0x03cb04cb; | |
1020 | if (ci->id == BCMA_CHIP_ID_BCM5357 || | |
1021 | ci->id == BCMA_CHIP_ID_BCM4749 || | |
1022 | ci->id == BCMA_CHIP_ID_BCM53572) | |
1023 | fl_ctl = 0x2300e1; | |
1024 | bgmac_write(bgmac, BGMAC_FLOW_CTL_THRESH, fl_ctl); | |
1025 | bgmac_write(bgmac, BGMAC_PAUSE_CTL, 0x27fff); | |
1026 | break; | |
1027 | } | |
1028 | ||
1029 | rxq_ctl = bgmac_read(bgmac, BGMAC_RXQ_CTL); | |
1030 | rxq_ctl &= ~BGMAC_RXQ_CTL_MDP_MASK; | |
1031 | bp_clk = bcma_pmu_get_bus_clock(&bgmac->core->bus->drv_cc) / 1000000; | |
1032 | mdp = (bp_clk * 128 / 1000) - 3; | |
1033 | rxq_ctl |= (mdp << BGMAC_RXQ_CTL_MDP_SHIFT); | |
1034 | bgmac_write(bgmac, BGMAC_RXQ_CTL, rxq_ctl); | |
1035 | } | |
1036 | ||
1037 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */ | |
1038 | static void bgmac_chip_init(struct bgmac *bgmac, bool full_init) | |
1039 | { | |
1040 | struct bgmac_dma_ring *ring; | |
dd4544f0 RM |
1041 | int i; |
1042 | ||
1043 | /* 1 interrupt per received frame */ | |
1044 | bgmac_write(bgmac, BGMAC_INT_RECV_LAZY, 1 << BGMAC_IRL_FC_SHIFT); | |
1045 | ||
1046 | /* Enable 802.3x tx flow control (honor received PAUSE frames) */ | |
1047 | bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_RPI, 0, true); | |
1048 | ||
c6edfe10 | 1049 | bgmac_set_rx_mode(bgmac->net_dev); |
dd4544f0 | 1050 | |
4e209001 | 1051 | bgmac_write_mac_address(bgmac, bgmac->net_dev->dev_addr); |
dd4544f0 RM |
1052 | |
1053 | if (bgmac->loopback) | |
e9ba1039 | 1054 | bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false); |
dd4544f0 | 1055 | else |
e9ba1039 | 1056 | bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_ML, 0, false); |
dd4544f0 RM |
1057 | |
1058 | bgmac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + ETHER_MAX_LEN); | |
1059 | ||
1060 | if (!bgmac->autoneg) { | |
1061 | bgmac_speed(bgmac, bgmac->speed); | |
1062 | bgmac_phy_force(bgmac); | |
1063 | } else if (bgmac->speed) { /* if there is anything to adv */ | |
1064 | bgmac_phy_advertise(bgmac); | |
1065 | } | |
1066 | ||
1067 | if (full_init) { | |
1068 | bgmac_dma_init(bgmac); | |
1069 | if (1) /* FIXME: is there any case we don't want IRQs? */ | |
1070 | bgmac_chip_intrs_on(bgmac); | |
1071 | } else { | |
1072 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) { | |
1073 | ring = &bgmac->rx_ring[i]; | |
1074 | bgmac_dma_rx_enable(bgmac, ring); | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | bgmac_enable(bgmac); | |
1079 | } | |
1080 | ||
1081 | static irqreturn_t bgmac_interrupt(int irq, void *dev_id) | |
1082 | { | |
1083 | struct bgmac *bgmac = netdev_priv(dev_id); | |
1084 | ||
1085 | u32 int_status = bgmac_read(bgmac, BGMAC_INT_STATUS); | |
1086 | int_status &= bgmac->int_mask; | |
1087 | ||
1088 | if (!int_status) | |
1089 | return IRQ_NONE; | |
1090 | ||
1091 | /* Ack */ | |
1092 | bgmac_write(bgmac, BGMAC_INT_STATUS, int_status); | |
1093 | ||
1094 | /* Disable new interrupts until handling existing ones */ | |
1095 | bgmac_chip_intrs_off(bgmac); | |
1096 | ||
1097 | bgmac->int_status = int_status; | |
1098 | ||
1099 | napi_schedule(&bgmac->napi); | |
1100 | ||
1101 | return IRQ_HANDLED; | |
1102 | } | |
1103 | ||
1104 | static int bgmac_poll(struct napi_struct *napi, int weight) | |
1105 | { | |
1106 | struct bgmac *bgmac = container_of(napi, struct bgmac, napi); | |
1107 | struct bgmac_dma_ring *ring; | |
1108 | int handled = 0; | |
1109 | ||
1110 | if (bgmac->int_status & BGMAC_IS_TX0) { | |
1111 | ring = &bgmac->tx_ring[0]; | |
1112 | bgmac_dma_tx_free(bgmac, ring); | |
1113 | bgmac->int_status &= ~BGMAC_IS_TX0; | |
1114 | } | |
1115 | ||
1116 | if (bgmac->int_status & BGMAC_IS_RX) { | |
1117 | ring = &bgmac->rx_ring[0]; | |
1118 | handled += bgmac_dma_rx_read(bgmac, ring, weight); | |
1119 | bgmac->int_status &= ~BGMAC_IS_RX; | |
1120 | } | |
1121 | ||
1122 | if (bgmac->int_status) { | |
1123 | bgmac_err(bgmac, "Unknown IRQs: 0x%08X\n", bgmac->int_status); | |
1124 | bgmac->int_status = 0; | |
1125 | } | |
1126 | ||
1127 | if (handled < weight) | |
1128 | napi_complete(napi); | |
1129 | ||
1130 | bgmac_chip_intrs_on(bgmac); | |
1131 | ||
1132 | return handled; | |
1133 | } | |
1134 | ||
1135 | /************************************************** | |
1136 | * net_device_ops | |
1137 | **************************************************/ | |
1138 | ||
1139 | static int bgmac_open(struct net_device *net_dev) | |
1140 | { | |
1141 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1142 | int err = 0; | |
1143 | ||
1144 | bgmac_chip_reset(bgmac); | |
1145 | /* Specs say about reclaiming rings here, but we do that in DMA init */ | |
1146 | bgmac_chip_init(bgmac, true); | |
1147 | ||
1148 | err = request_irq(bgmac->core->irq, bgmac_interrupt, IRQF_SHARED, | |
1149 | KBUILD_MODNAME, net_dev); | |
1150 | if (err < 0) { | |
1151 | bgmac_err(bgmac, "IRQ request error: %d!\n", err); | |
1152 | goto err_out; | |
1153 | } | |
1154 | napi_enable(&bgmac->napi); | |
1155 | ||
1156 | netif_carrier_on(net_dev); | |
1157 | ||
1158 | err_out: | |
1159 | return err; | |
1160 | } | |
1161 | ||
1162 | static int bgmac_stop(struct net_device *net_dev) | |
1163 | { | |
1164 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1165 | ||
1166 | netif_carrier_off(net_dev); | |
1167 | ||
1168 | napi_disable(&bgmac->napi); | |
1169 | bgmac_chip_intrs_off(bgmac); | |
1170 | free_irq(bgmac->core->irq, net_dev); | |
1171 | ||
1172 | bgmac_chip_reset(bgmac); | |
1173 | ||
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | static netdev_tx_t bgmac_start_xmit(struct sk_buff *skb, | |
1178 | struct net_device *net_dev) | |
1179 | { | |
1180 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1181 | struct bgmac_dma_ring *ring; | |
1182 | ||
1183 | /* No QOS support yet */ | |
1184 | ring = &bgmac->tx_ring[0]; | |
1185 | return bgmac_dma_tx_add(bgmac, ring, skb); | |
1186 | } | |
1187 | ||
4e209001 HM |
1188 | static int bgmac_set_mac_address(struct net_device *net_dev, void *addr) |
1189 | { | |
1190 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1191 | int ret; | |
1192 | ||
1193 | ret = eth_prepare_mac_addr_change(net_dev, addr); | |
1194 | if (ret < 0) | |
1195 | return ret; | |
1196 | bgmac_write_mac_address(bgmac, (u8 *)addr); | |
1197 | eth_commit_mac_addr_change(net_dev, addr); | |
1198 | return 0; | |
1199 | } | |
1200 | ||
dd4544f0 RM |
1201 | static int bgmac_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd) |
1202 | { | |
1203 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1204 | struct mii_ioctl_data *data = if_mii(ifr); | |
1205 | ||
1206 | switch (cmd) { | |
1207 | case SIOCGMIIPHY: | |
1208 | data->phy_id = bgmac->phyaddr; | |
1209 | /* fallthru */ | |
1210 | case SIOCGMIIREG: | |
1211 | if (!netif_running(net_dev)) | |
1212 | return -EAGAIN; | |
1213 | data->val_out = bgmac_phy_read(bgmac, data->phy_id, | |
1214 | data->reg_num & 0x1f); | |
1215 | return 0; | |
1216 | case SIOCSMIIREG: | |
1217 | if (!netif_running(net_dev)) | |
1218 | return -EAGAIN; | |
1219 | bgmac_phy_write(bgmac, data->phy_id, data->reg_num & 0x1f, | |
1220 | data->val_in); | |
1221 | return 0; | |
1222 | default: | |
1223 | return -EOPNOTSUPP; | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | static const struct net_device_ops bgmac_netdev_ops = { | |
1228 | .ndo_open = bgmac_open, | |
1229 | .ndo_stop = bgmac_stop, | |
1230 | .ndo_start_xmit = bgmac_start_xmit, | |
c6edfe10 | 1231 | .ndo_set_rx_mode = bgmac_set_rx_mode, |
4e209001 | 1232 | .ndo_set_mac_address = bgmac_set_mac_address, |
522c5907 | 1233 | .ndo_validate_addr = eth_validate_addr, |
dd4544f0 RM |
1234 | .ndo_do_ioctl = bgmac_ioctl, |
1235 | }; | |
1236 | ||
1237 | /************************************************** | |
1238 | * ethtool_ops | |
1239 | **************************************************/ | |
1240 | ||
1241 | static int bgmac_get_settings(struct net_device *net_dev, | |
1242 | struct ethtool_cmd *cmd) | |
1243 | { | |
1244 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1245 | ||
1246 | cmd->supported = SUPPORTED_10baseT_Half | | |
1247 | SUPPORTED_10baseT_Full | | |
1248 | SUPPORTED_100baseT_Half | | |
1249 | SUPPORTED_100baseT_Full | | |
1250 | SUPPORTED_1000baseT_Half | | |
1251 | SUPPORTED_1000baseT_Full | | |
1252 | SUPPORTED_Autoneg; | |
1253 | ||
1254 | if (bgmac->autoneg) { | |
1255 | WARN_ON(cmd->advertising); | |
1256 | if (bgmac->full_duplex) { | |
1257 | if (bgmac->speed & BGMAC_SPEED_10) | |
1258 | cmd->advertising |= ADVERTISED_10baseT_Full; | |
1259 | if (bgmac->speed & BGMAC_SPEED_100) | |
1260 | cmd->advertising |= ADVERTISED_100baseT_Full; | |
1261 | if (bgmac->speed & BGMAC_SPEED_1000) | |
1262 | cmd->advertising |= ADVERTISED_1000baseT_Full; | |
1263 | } else { | |
1264 | if (bgmac->speed & BGMAC_SPEED_10) | |
1265 | cmd->advertising |= ADVERTISED_10baseT_Half; | |
1266 | if (bgmac->speed & BGMAC_SPEED_100) | |
1267 | cmd->advertising |= ADVERTISED_100baseT_Half; | |
1268 | if (bgmac->speed & BGMAC_SPEED_1000) | |
1269 | cmd->advertising |= ADVERTISED_1000baseT_Half; | |
1270 | } | |
1271 | } else { | |
1272 | switch (bgmac->speed) { | |
1273 | case BGMAC_SPEED_10: | |
1274 | ethtool_cmd_speed_set(cmd, SPEED_10); | |
1275 | break; | |
1276 | case BGMAC_SPEED_100: | |
1277 | ethtool_cmd_speed_set(cmd, SPEED_100); | |
1278 | break; | |
1279 | case BGMAC_SPEED_1000: | |
1280 | ethtool_cmd_speed_set(cmd, SPEED_1000); | |
1281 | break; | |
1282 | } | |
1283 | } | |
1284 | ||
1285 | cmd->duplex = bgmac->full_duplex ? DUPLEX_FULL : DUPLEX_HALF; | |
1286 | ||
1287 | cmd->autoneg = bgmac->autoneg; | |
1288 | ||
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | #if 0 | |
1293 | static int bgmac_set_settings(struct net_device *net_dev, | |
1294 | struct ethtool_cmd *cmd) | |
1295 | { | |
1296 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1297 | ||
1298 | return -1; | |
1299 | } | |
1300 | #endif | |
1301 | ||
1302 | static void bgmac_get_drvinfo(struct net_device *net_dev, | |
1303 | struct ethtool_drvinfo *info) | |
1304 | { | |
1305 | strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); | |
1306 | strlcpy(info->bus_info, "BCMA", sizeof(info->bus_info)); | |
1307 | } | |
1308 | ||
1309 | static const struct ethtool_ops bgmac_ethtool_ops = { | |
1310 | .get_settings = bgmac_get_settings, | |
1311 | .get_drvinfo = bgmac_get_drvinfo, | |
1312 | }; | |
1313 | ||
11e5e76e RM |
1314 | /************************************************** |
1315 | * MII | |
1316 | **************************************************/ | |
1317 | ||
1318 | static int bgmac_mii_read(struct mii_bus *bus, int mii_id, int regnum) | |
1319 | { | |
1320 | return bgmac_phy_read(bus->priv, mii_id, regnum); | |
1321 | } | |
1322 | ||
1323 | static int bgmac_mii_write(struct mii_bus *bus, int mii_id, int regnum, | |
1324 | u16 value) | |
1325 | { | |
1326 | return bgmac_phy_write(bus->priv, mii_id, regnum, value); | |
1327 | } | |
1328 | ||
1329 | static int bgmac_mii_register(struct bgmac *bgmac) | |
1330 | { | |
1331 | struct mii_bus *mii_bus; | |
1332 | int i, err = 0; | |
1333 | ||
1334 | mii_bus = mdiobus_alloc(); | |
1335 | if (!mii_bus) | |
1336 | return -ENOMEM; | |
1337 | ||
1338 | mii_bus->name = "bgmac mii bus"; | |
1339 | sprintf(mii_bus->id, "%s-%d-%d", "bgmac", bgmac->core->bus->num, | |
1340 | bgmac->core->core_unit); | |
1341 | mii_bus->priv = bgmac; | |
1342 | mii_bus->read = bgmac_mii_read; | |
1343 | mii_bus->write = bgmac_mii_write; | |
1344 | mii_bus->parent = &bgmac->core->dev; | |
1345 | mii_bus->phy_mask = ~(1 << bgmac->phyaddr); | |
1346 | ||
1347 | mii_bus->irq = kmalloc_array(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL); | |
1348 | if (!mii_bus->irq) { | |
1349 | err = -ENOMEM; | |
1350 | goto err_free_bus; | |
1351 | } | |
1352 | for (i = 0; i < PHY_MAX_ADDR; i++) | |
1353 | mii_bus->irq[i] = PHY_POLL; | |
1354 | ||
1355 | err = mdiobus_register(mii_bus); | |
1356 | if (err) { | |
1357 | bgmac_err(bgmac, "Registration of mii bus failed\n"); | |
1358 | goto err_free_irq; | |
1359 | } | |
1360 | ||
1361 | bgmac->mii_bus = mii_bus; | |
1362 | ||
1363 | return err; | |
1364 | ||
1365 | err_free_irq: | |
1366 | kfree(mii_bus->irq); | |
1367 | err_free_bus: | |
1368 | mdiobus_free(mii_bus); | |
1369 | return err; | |
1370 | } | |
1371 | ||
1372 | static void bgmac_mii_unregister(struct bgmac *bgmac) | |
1373 | { | |
1374 | struct mii_bus *mii_bus = bgmac->mii_bus; | |
1375 | ||
1376 | mdiobus_unregister(mii_bus); | |
1377 | kfree(mii_bus->irq); | |
1378 | mdiobus_free(mii_bus); | |
1379 | } | |
1380 | ||
dd4544f0 RM |
1381 | /************************************************** |
1382 | * BCMA bus ops | |
1383 | **************************************************/ | |
1384 | ||
1385 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */ | |
1386 | static int bgmac_probe(struct bcma_device *core) | |
1387 | { | |
1388 | struct net_device *net_dev; | |
1389 | struct bgmac *bgmac; | |
1390 | struct ssb_sprom *sprom = &core->bus->sprom; | |
1391 | u8 *mac = core->core_unit ? sprom->et1mac : sprom->et0mac; | |
1392 | int err; | |
1393 | ||
1394 | /* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */ | |
1395 | if (core->core_unit > 1) { | |
1396 | pr_err("Unsupported core_unit %d\n", core->core_unit); | |
1397 | return -ENOTSUPP; | |
1398 | } | |
1399 | ||
d166f218 RM |
1400 | if (!is_valid_ether_addr(mac)) { |
1401 | dev_err(&core->dev, "Invalid MAC addr: %pM\n", mac); | |
1402 | eth_random_addr(mac); | |
1403 | dev_warn(&core->dev, "Using random MAC: %pM\n", mac); | |
1404 | } | |
1405 | ||
dd4544f0 RM |
1406 | /* Allocation and references */ |
1407 | net_dev = alloc_etherdev(sizeof(*bgmac)); | |
1408 | if (!net_dev) | |
1409 | return -ENOMEM; | |
1410 | net_dev->netdev_ops = &bgmac_netdev_ops; | |
1411 | net_dev->irq = core->irq; | |
1412 | SET_ETHTOOL_OPS(net_dev, &bgmac_ethtool_ops); | |
1413 | bgmac = netdev_priv(net_dev); | |
1414 | bgmac->net_dev = net_dev; | |
1415 | bgmac->core = core; | |
1416 | bcma_set_drvdata(core, bgmac); | |
1417 | ||
1418 | /* Defaults */ | |
1419 | bgmac->autoneg = true; | |
1420 | bgmac->full_duplex = true; | |
1421 | bgmac->speed = BGMAC_SPEED_10 | BGMAC_SPEED_100 | BGMAC_SPEED_1000; | |
1422 | memcpy(bgmac->net_dev->dev_addr, mac, ETH_ALEN); | |
1423 | ||
1424 | /* On BCM4706 we need common core to access PHY */ | |
1425 | if (core->id.id == BCMA_CORE_4706_MAC_GBIT && | |
1426 | !core->bus->drv_gmac_cmn.core) { | |
1427 | bgmac_err(bgmac, "GMAC CMN core not found (required for BCM4706)\n"); | |
1428 | err = -ENODEV; | |
1429 | goto err_netdev_free; | |
1430 | } | |
1431 | bgmac->cmn = core->bus->drv_gmac_cmn.core; | |
1432 | ||
1433 | bgmac->phyaddr = core->core_unit ? sprom->et1phyaddr : | |
1434 | sprom->et0phyaddr; | |
1435 | bgmac->phyaddr &= BGMAC_PHY_MASK; | |
1436 | if (bgmac->phyaddr == BGMAC_PHY_MASK) { | |
1437 | bgmac_err(bgmac, "No PHY found\n"); | |
1438 | err = -ENODEV; | |
1439 | goto err_netdev_free; | |
1440 | } | |
1441 | bgmac_info(bgmac, "Found PHY addr: %d%s\n", bgmac->phyaddr, | |
1442 | bgmac->phyaddr == BGMAC_PHY_NOREGS ? " (NOREGS)" : ""); | |
1443 | ||
1444 | if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) { | |
1445 | bgmac_err(bgmac, "PCI setup not implemented\n"); | |
1446 | err = -ENOTSUPP; | |
1447 | goto err_netdev_free; | |
1448 | } | |
1449 | ||
1450 | bgmac_chip_reset(bgmac); | |
1451 | ||
1452 | err = bgmac_dma_alloc(bgmac); | |
1453 | if (err) { | |
1454 | bgmac_err(bgmac, "Unable to alloc memory for DMA\n"); | |
1455 | goto err_netdev_free; | |
1456 | } | |
1457 | ||
1458 | bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK; | |
edb15d83 | 1459 | if (bcm47xx_nvram_getenv("et0_no_txint", NULL, 0) == 0) |
dd4544f0 RM |
1460 | bgmac->int_mask &= ~BGMAC_IS_TX_MASK; |
1461 | ||
1462 | /* TODO: reset the external phy. Specs are needed */ | |
1463 | bgmac_phy_reset(bgmac); | |
1464 | ||
1465 | bgmac->has_robosw = !!(core->bus->sprom.boardflags_lo & | |
1466 | BGMAC_BFL_ENETROBO); | |
1467 | if (bgmac->has_robosw) | |
1468 | bgmac_warn(bgmac, "Support for Roboswitch not implemented\n"); | |
1469 | ||
1470 | if (core->bus->sprom.boardflags_lo & BGMAC_BFL_ENETADM) | |
1471 | bgmac_warn(bgmac, "Support for ADMtek ethernet switch not implemented\n"); | |
1472 | ||
11e5e76e RM |
1473 | err = bgmac_mii_register(bgmac); |
1474 | if (err) { | |
1475 | bgmac_err(bgmac, "Cannot register MDIO\n"); | |
1476 | err = -ENOTSUPP; | |
1477 | goto err_dma_free; | |
1478 | } | |
1479 | ||
dd4544f0 RM |
1480 | err = register_netdev(bgmac->net_dev); |
1481 | if (err) { | |
1482 | bgmac_err(bgmac, "Cannot register net device\n"); | |
1483 | err = -ENOTSUPP; | |
11e5e76e | 1484 | goto err_mii_unregister; |
dd4544f0 RM |
1485 | } |
1486 | ||
1487 | netif_carrier_off(net_dev); | |
1488 | ||
1489 | netif_napi_add(net_dev, &bgmac->napi, bgmac_poll, BGMAC_WEIGHT); | |
1490 | ||
1491 | return 0; | |
1492 | ||
11e5e76e RM |
1493 | err_mii_unregister: |
1494 | bgmac_mii_unregister(bgmac); | |
dd4544f0 RM |
1495 | err_dma_free: |
1496 | bgmac_dma_free(bgmac); | |
1497 | ||
1498 | err_netdev_free: | |
1499 | bcma_set_drvdata(core, NULL); | |
1500 | free_netdev(net_dev); | |
1501 | ||
1502 | return err; | |
1503 | } | |
1504 | ||
1505 | static void bgmac_remove(struct bcma_device *core) | |
1506 | { | |
1507 | struct bgmac *bgmac = bcma_get_drvdata(core); | |
1508 | ||
1509 | netif_napi_del(&bgmac->napi); | |
1510 | unregister_netdev(bgmac->net_dev); | |
11e5e76e | 1511 | bgmac_mii_unregister(bgmac); |
dd4544f0 RM |
1512 | bgmac_dma_free(bgmac); |
1513 | bcma_set_drvdata(core, NULL); | |
1514 | free_netdev(bgmac->net_dev); | |
1515 | } | |
1516 | ||
1517 | static struct bcma_driver bgmac_bcma_driver = { | |
1518 | .name = KBUILD_MODNAME, | |
1519 | .id_table = bgmac_bcma_tbl, | |
1520 | .probe = bgmac_probe, | |
1521 | .remove = bgmac_remove, | |
1522 | }; | |
1523 | ||
1524 | static int __init bgmac_init(void) | |
1525 | { | |
1526 | int err; | |
1527 | ||
1528 | err = bcma_driver_register(&bgmac_bcma_driver); | |
1529 | if (err) | |
1530 | return err; | |
1531 | pr_info("Broadcom 47xx GBit MAC driver loaded\n"); | |
1532 | ||
1533 | return 0; | |
1534 | } | |
1535 | ||
1536 | static void __exit bgmac_exit(void) | |
1537 | { | |
1538 | bcma_driver_unregister(&bgmac_bcma_driver); | |
1539 | } | |
1540 | ||
1541 | module_init(bgmac_init) | |
1542 | module_exit(bgmac_exit) | |
1543 | ||
1544 | MODULE_AUTHOR("Rafał Miłecki"); | |
1545 | MODULE_LICENSE("GPL"); |