2 * Driver for (BCM4706)? GBit MAC core on BCMA bus.
4 * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
6 * Licensed under the GNU/GPL. See COPYING for details.
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>
16 #include <linux/phy.h>
17 #include <linux/interrupt.h>
18 #include <linux/dma-mapping.h>
19 #include <bcm47xx_nvram.h>
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
),
26 MODULE_DEVICE_TABLE(bcma
, bgmac_bcma_tbl
);
28 static bool bgmac_wait_value(struct bcma_device
*core
, u16 reg
, u32 mask
,
29 u32 value
, int timeout
)
34 for (i
= 0; i
< timeout
/ 10; i
++) {
35 val
= bcma_read32(core
, reg
);
36 if ((val
& mask
) == value
)
40 pr_err("Timeout waiting for reg 0x%X\n", reg
);
44 /**************************************************
46 **************************************************/
48 static void bgmac_dma_tx_reset(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
)
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.
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
) {
74 bgmac_err(bgmac
, "Timeout suspending DMA TX ring 0x%X (BGMAC_DMA_TX_STAT: 0x%08X)\n",
75 ring
->mmio_base
, val
);
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
,
83 bgmac_warn(bgmac
, "DMA TX ring 0x%X wasn't disabled on time, waiting additional 300us\n",
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",
93 static void bgmac_dma_tx_enable(struct bgmac
*bgmac
,
94 struct bgmac_dma_ring
*ring
)
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
);
104 static netdev_tx_t
bgmac_dma_tx_add(struct bgmac
*bgmac
,
105 struct bgmac_dma_ring
*ring
,
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
;
115 if (skb
->len
> BGMAC_DESC_CTL1_LEN
) {
116 bgmac_err(bgmac
, "Too long skb (%d)\n", skb
->len
);
120 if (ring
->start
<= ring
->end
)
121 free_slots
= ring
->start
- ring
->end
+ BGMAC_TX_RING_SLOTS
;
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
;
130 slot
= &ring
->slots
[ring
->end
];
132 slot
->dma_addr
= dma_map_single(dma_dev
, skb
->data
, skb
->len
,
134 if (dma_mapping_error(dma_dev
, slot
->dma_addr
)) {
135 bgmac_err(bgmac
, "Mapping error of skb on ring 0x%X\n",
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
;
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
);
152 netdev_sent_queue(net_dev
, skb
->len
);
156 /* Increase ring->end to point empty slot. We tell hardware the first
157 * slot it should *not* read.
159 if (++ring
->end
>= BGMAC_TX_RING_SLOTS
)
161 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_INDEX
,
163 ring
->end
* sizeof(struct bgmac_dma_desc
));
165 /* Always keep one slot free to allow detecting bugged calls. */
166 if (--free_slots
== 1)
167 netif_stop_queue(net_dev
);
172 netif_stop_queue(net_dev
);
177 /* Free transmitted packets */
178 static void bgmac_dma_tx_free(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
)
180 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
183 unsigned bytes_compl
= 0, pkts_compl
= 0;
185 /* The last slot that hardware didn't consume yet */
186 empty_slot
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_STATUS
);
187 empty_slot
&= BGMAC_DMA_TX_STATDPTR
;
188 empty_slot
-= ring
->index_base
;
189 empty_slot
&= BGMAC_DMA_TX_STATDPTR
;
190 empty_slot
/= sizeof(struct bgmac_dma_desc
);
192 while (ring
->start
!= empty_slot
) {
193 struct bgmac_slot_info
*slot
= &ring
->slots
[ring
->start
];
196 /* Unmap no longer used buffer */
197 dma_unmap_single(dma_dev
, slot
->dma_addr
,
198 slot
->skb
->len
, DMA_TO_DEVICE
);
201 bytes_compl
+= slot
->skb
->len
;
204 /* Free memory! :) */
205 dev_kfree_skb(slot
->skb
);
208 bgmac_err(bgmac
, "Hardware reported transmission for empty TX ring slot %d! End of ring: %d\n",
209 ring
->start
, ring
->end
);
212 if (++ring
->start
>= BGMAC_TX_RING_SLOTS
)
217 netdev_completed_queue(bgmac
->net_dev
, pkts_compl
, bytes_compl
);
219 if (freed
&& netif_queue_stopped(bgmac
->net_dev
))
220 netif_wake_queue(bgmac
->net_dev
);
223 static void bgmac_dma_rx_reset(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
)
225 if (!ring
->mmio_base
)
228 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_CTL
, 0);
229 if (!bgmac_wait_value(bgmac
->core
,
230 ring
->mmio_base
+ BGMAC_DMA_RX_STATUS
,
231 BGMAC_DMA_RX_STAT
, BGMAC_DMA_RX_STAT_DISABLED
,
233 bgmac_err(bgmac
, "Reset of ring 0x%X RX failed\n",
237 static void bgmac_dma_rx_enable(struct bgmac
*bgmac
,
238 struct bgmac_dma_ring
*ring
)
242 ctl
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_CTL
);
243 ctl
&= BGMAC_DMA_RX_ADDREXT_MASK
;
244 ctl
|= BGMAC_DMA_RX_ENABLE
;
245 ctl
|= BGMAC_DMA_RX_PARITY_DISABLE
;
246 ctl
|= BGMAC_DMA_RX_OVERFLOW_CONT
;
247 ctl
|= BGMAC_RX_FRAME_OFFSET
<< BGMAC_DMA_RX_FRAME_OFFSET_SHIFT
;
248 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_CTL
, ctl
);
251 static int bgmac_dma_rx_skb_for_slot(struct bgmac
*bgmac
,
252 struct bgmac_slot_info
*slot
)
254 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
257 struct bgmac_rx_header
*rx
;
260 skb
= netdev_alloc_skb(bgmac
->net_dev
, BGMAC_RX_BUF_SIZE
);
264 /* Poison - if everything goes fine, hardware will overwrite it */
265 rx
= (struct bgmac_rx_header
*)skb
->data
;
266 rx
->len
= cpu_to_le16(0xdead);
267 rx
->flags
= cpu_to_le16(0xbeef);
269 /* Map skb for the DMA */
270 dma_addr
= dma_map_single(dma_dev
, skb
->data
,
271 BGMAC_RX_BUF_SIZE
, DMA_FROM_DEVICE
);
272 if (dma_mapping_error(dma_dev
, dma_addr
)) {
273 bgmac_err(bgmac
, "DMA mapping error\n");
278 /* Update the slot */
280 slot
->dma_addr
= dma_addr
;
282 if (slot
->dma_addr
& 0xC0000000)
283 bgmac_warn(bgmac
, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
288 static void bgmac_dma_rx_setup_desc(struct bgmac
*bgmac
,
289 struct bgmac_dma_ring
*ring
, int desc_idx
)
291 struct bgmac_dma_desc
*dma_desc
= ring
->cpu_base
+ desc_idx
;
292 u32 ctl0
= 0, ctl1
= 0;
294 if (desc_idx
== ring
->num_slots
- 1)
295 ctl0
|= BGMAC_DESC_CTL0_EOT
;
296 ctl1
|= BGMAC_RX_BUF_SIZE
& BGMAC_DESC_CTL1_LEN
;
297 /* Is there any BGMAC device that requires extension? */
298 /* ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT) &
299 * B43_DMA64_DCTL1_ADDREXT_MASK;
302 dma_desc
->addr_low
= cpu_to_le32(lower_32_bits(ring
->slots
[desc_idx
].dma_addr
));
303 dma_desc
->addr_high
= cpu_to_le32(upper_32_bits(ring
->slots
[desc_idx
].dma_addr
));
304 dma_desc
->ctl0
= cpu_to_le32(ctl0
);
305 dma_desc
->ctl1
= cpu_to_le32(ctl1
);
308 static int bgmac_dma_rx_read(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
,
314 end_slot
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_STATUS
);
315 end_slot
&= BGMAC_DMA_RX_STATDPTR
;
316 end_slot
-= ring
->index_base
;
317 end_slot
&= BGMAC_DMA_RX_STATDPTR
;
318 end_slot
/= sizeof(struct bgmac_dma_desc
);
320 ring
->end
= end_slot
;
322 while (ring
->start
!= ring
->end
) {
323 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
324 struct bgmac_slot_info
*slot
= &ring
->slots
[ring
->start
];
325 struct sk_buff
*skb
= slot
->skb
;
326 struct bgmac_rx_header
*rx
;
329 /* Unmap buffer to make it accessible to the CPU */
330 dma_sync_single_for_cpu(dma_dev
, slot
->dma_addr
,
331 BGMAC_RX_BUF_SIZE
, DMA_FROM_DEVICE
);
333 /* Get info from the header */
334 rx
= (struct bgmac_rx_header
*)skb
->data
;
335 len
= le16_to_cpu(rx
->len
);
336 flags
= le16_to_cpu(rx
->flags
);
339 dma_addr_t old_dma_addr
= slot
->dma_addr
;
342 /* Check for poison and drop or pass the packet */
343 if (len
== 0xdead && flags
== 0xbeef) {
344 bgmac_err(bgmac
, "Found poisoned packet at slot %d, DMA issue!\n",
346 dma_sync_single_for_device(dma_dev
,
356 /* Prepare new skb as replacement */
357 err
= bgmac_dma_rx_skb_for_slot(bgmac
, slot
);
359 /* Poison the old skb */
360 rx
->len
= cpu_to_le16(0xdead);
361 rx
->flags
= cpu_to_le16(0xbeef);
363 dma_sync_single_for_device(dma_dev
,
369 bgmac_dma_rx_setup_desc(bgmac
, ring
, ring
->start
);
371 /* Unmap old skb, we'll pass it to the netfif */
372 dma_unmap_single(dma_dev
, old_dma_addr
,
373 BGMAC_RX_BUF_SIZE
, DMA_FROM_DEVICE
);
375 skb_put(skb
, BGMAC_RX_FRAME_OFFSET
+ len
);
376 skb_pull(skb
, BGMAC_RX_FRAME_OFFSET
);
378 skb_checksum_none_assert(skb
);
379 skb
->protocol
= eth_type_trans(skb
, bgmac
->net_dev
);
380 netif_receive_skb(skb
);
384 if (++ring
->start
>= BGMAC_RX_RING_SLOTS
)
387 if (handled
>= weight
) /* Should never be greater */
394 /* Does ring support unaligned addressing? */
395 static bool bgmac_dma_unaligned(struct bgmac
*bgmac
,
396 struct bgmac_dma_ring
*ring
,
397 enum bgmac_dma_ring_type ring_type
)
400 case BGMAC_DMA_RING_TX
:
401 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_RINGLO
,
403 if (bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_RINGLO
))
406 case BGMAC_DMA_RING_RX
:
407 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_RINGLO
,
409 if (bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_RINGLO
))
416 static void bgmac_dma_ring_free(struct bgmac
*bgmac
,
417 struct bgmac_dma_ring
*ring
)
419 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
420 struct bgmac_slot_info
*slot
;
424 for (i
= 0; i
< ring
->num_slots
; i
++) {
425 slot
= &ring
->slots
[i
];
428 dma_unmap_single(dma_dev
, slot
->dma_addr
,
429 slot
->skb
->len
, DMA_TO_DEVICE
);
430 dev_kfree_skb(slot
->skb
);
434 if (ring
->cpu_base
) {
435 /* Free ring of descriptors */
436 size
= ring
->num_slots
* sizeof(struct bgmac_dma_desc
);
437 dma_free_coherent(dma_dev
, size
, ring
->cpu_base
,
442 static void bgmac_dma_free(struct bgmac
*bgmac
)
446 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++)
447 bgmac_dma_ring_free(bgmac
, &bgmac
->tx_ring
[i
]);
448 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++)
449 bgmac_dma_ring_free(bgmac
, &bgmac
->rx_ring
[i
]);
452 static int bgmac_dma_alloc(struct bgmac
*bgmac
)
454 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
455 struct bgmac_dma_ring
*ring
;
456 static const u16 ring_base
[] = { BGMAC_DMA_BASE0
, BGMAC_DMA_BASE1
,
457 BGMAC_DMA_BASE2
, BGMAC_DMA_BASE3
, };
458 int size
; /* ring size: different for Tx and Rx */
462 BUILD_BUG_ON(BGMAC_MAX_TX_RINGS
> ARRAY_SIZE(ring_base
));
463 BUILD_BUG_ON(BGMAC_MAX_RX_RINGS
> ARRAY_SIZE(ring_base
));
465 if (!(bcma_aread32(bgmac
->core
, BCMA_IOST
) & BCMA_IOST_DMA64
)) {
466 bgmac_err(bgmac
, "Core does not report 64-bit DMA\n");
470 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++) {
471 ring
= &bgmac
->tx_ring
[i
];
472 ring
->num_slots
= BGMAC_TX_RING_SLOTS
;
473 ring
->mmio_base
= ring_base
[i
];
475 /* Alloc ring of descriptors */
476 size
= ring
->num_slots
* sizeof(struct bgmac_dma_desc
);
477 ring
->cpu_base
= dma_zalloc_coherent(dma_dev
, size
,
480 if (!ring
->cpu_base
) {
481 bgmac_err(bgmac
, "Allocation of TX ring 0x%X failed\n",
485 if (ring
->dma_base
& 0xC0000000)
486 bgmac_warn(bgmac
, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
488 ring
->unaligned
= bgmac_dma_unaligned(bgmac
, ring
,
491 ring
->index_base
= lower_32_bits(ring
->dma_base
);
493 ring
->index_base
= 0;
495 /* No need to alloc TX slots yet */
498 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++) {
501 ring
= &bgmac
->rx_ring
[i
];
502 ring
->num_slots
= BGMAC_RX_RING_SLOTS
;
503 ring
->mmio_base
= ring_base
[i
];
505 /* Alloc ring of descriptors */
506 size
= ring
->num_slots
* sizeof(struct bgmac_dma_desc
);
507 ring
->cpu_base
= dma_zalloc_coherent(dma_dev
, size
,
510 if (!ring
->cpu_base
) {
511 bgmac_err(bgmac
, "Allocation of RX ring 0x%X failed\n",
516 if (ring
->dma_base
& 0xC0000000)
517 bgmac_warn(bgmac
, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
519 ring
->unaligned
= bgmac_dma_unaligned(bgmac
, ring
,
522 ring
->index_base
= lower_32_bits(ring
->dma_base
);
524 ring
->index_base
= 0;
527 for (j
= 0; j
< ring
->num_slots
; j
++) {
528 err
= bgmac_dma_rx_skb_for_slot(bgmac
, &ring
->slots
[j
]);
530 bgmac_err(bgmac
, "Can't allocate skb for slot in RX ring\n");
539 bgmac_dma_free(bgmac
);
543 static void bgmac_dma_init(struct bgmac
*bgmac
)
545 struct bgmac_dma_ring
*ring
;
548 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++) {
549 ring
= &bgmac
->tx_ring
[i
];
551 if (!ring
->unaligned
)
552 bgmac_dma_tx_enable(bgmac
, ring
);
553 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_RINGLO
,
554 lower_32_bits(ring
->dma_base
));
555 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_RINGHI
,
556 upper_32_bits(ring
->dma_base
));
558 bgmac_dma_tx_enable(bgmac
, ring
);
561 ring
->end
= 0; /* Points the slot that should *not* be read */
564 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++) {
567 ring
= &bgmac
->rx_ring
[i
];
569 if (!ring
->unaligned
)
570 bgmac_dma_rx_enable(bgmac
, ring
);
571 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_RINGLO
,
572 lower_32_bits(ring
->dma_base
));
573 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_RINGHI
,
574 upper_32_bits(ring
->dma_base
));
576 bgmac_dma_rx_enable(bgmac
, ring
);
578 for (j
= 0; j
< ring
->num_slots
; j
++)
579 bgmac_dma_rx_setup_desc(bgmac
, ring
, j
);
581 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_INDEX
,
583 ring
->num_slots
* sizeof(struct bgmac_dma_desc
));
590 /**************************************************
592 **************************************************/
594 static u16
bgmac_phy_read(struct bgmac
*bgmac
, u8 phyaddr
, u8 reg
)
596 struct bcma_device
*core
;
601 BUILD_BUG_ON(BGMAC_PA_DATA_MASK
!= BCMA_GMAC_CMN_PA_DATA_MASK
);
602 BUILD_BUG_ON(BGMAC_PA_ADDR_MASK
!= BCMA_GMAC_CMN_PA_ADDR_MASK
);
603 BUILD_BUG_ON(BGMAC_PA_ADDR_SHIFT
!= BCMA_GMAC_CMN_PA_ADDR_SHIFT
);
604 BUILD_BUG_ON(BGMAC_PA_REG_MASK
!= BCMA_GMAC_CMN_PA_REG_MASK
);
605 BUILD_BUG_ON(BGMAC_PA_REG_SHIFT
!= BCMA_GMAC_CMN_PA_REG_SHIFT
);
606 BUILD_BUG_ON(BGMAC_PA_WRITE
!= BCMA_GMAC_CMN_PA_WRITE
);
607 BUILD_BUG_ON(BGMAC_PA_START
!= BCMA_GMAC_CMN_PA_START
);
608 BUILD_BUG_ON(BGMAC_PC_EPA_MASK
!= BCMA_GMAC_CMN_PC_EPA_MASK
);
609 BUILD_BUG_ON(BGMAC_PC_MCT_MASK
!= BCMA_GMAC_CMN_PC_MCT_MASK
);
610 BUILD_BUG_ON(BGMAC_PC_MCT_SHIFT
!= BCMA_GMAC_CMN_PC_MCT_SHIFT
);
611 BUILD_BUG_ON(BGMAC_PC_MTE
!= BCMA_GMAC_CMN_PC_MTE
);
613 if (bgmac
->core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
) {
614 core
= bgmac
->core
->bus
->drv_gmac_cmn
.core
;
615 phy_access_addr
= BCMA_GMAC_CMN_PHY_ACCESS
;
616 phy_ctl_addr
= BCMA_GMAC_CMN_PHY_CTL
;
619 phy_access_addr
= BGMAC_PHY_ACCESS
;
620 phy_ctl_addr
= BGMAC_PHY_CNTL
;
623 tmp
= bcma_read32(core
, phy_ctl_addr
);
624 tmp
&= ~BGMAC_PC_EPA_MASK
;
626 bcma_write32(core
, phy_ctl_addr
, tmp
);
628 tmp
= BGMAC_PA_START
;
629 tmp
|= phyaddr
<< BGMAC_PA_ADDR_SHIFT
;
630 tmp
|= reg
<< BGMAC_PA_REG_SHIFT
;
631 bcma_write32(core
, phy_access_addr
, tmp
);
633 if (!bgmac_wait_value(core
, phy_access_addr
, BGMAC_PA_START
, 0, 1000)) {
634 bgmac_err(bgmac
, "Reading PHY %d register 0x%X failed\n",
639 return bcma_read32(core
, phy_access_addr
) & BGMAC_PA_DATA_MASK
;
642 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphywr */
643 static int bgmac_phy_write(struct bgmac
*bgmac
, u8 phyaddr
, u8 reg
, u16 value
)
645 struct bcma_device
*core
;
650 if (bgmac
->core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
) {
651 core
= bgmac
->core
->bus
->drv_gmac_cmn
.core
;
652 phy_access_addr
= BCMA_GMAC_CMN_PHY_ACCESS
;
653 phy_ctl_addr
= BCMA_GMAC_CMN_PHY_CTL
;
656 phy_access_addr
= BGMAC_PHY_ACCESS
;
657 phy_ctl_addr
= BGMAC_PHY_CNTL
;
660 tmp
= bcma_read32(core
, phy_ctl_addr
);
661 tmp
&= ~BGMAC_PC_EPA_MASK
;
663 bcma_write32(core
, phy_ctl_addr
, tmp
);
665 bgmac_write(bgmac
, BGMAC_INT_STATUS
, BGMAC_IS_MDIO
);
666 if (bgmac_read(bgmac
, BGMAC_INT_STATUS
) & BGMAC_IS_MDIO
)
667 bgmac_warn(bgmac
, "Error setting MDIO int\n");
669 tmp
= BGMAC_PA_START
;
670 tmp
|= BGMAC_PA_WRITE
;
671 tmp
|= phyaddr
<< BGMAC_PA_ADDR_SHIFT
;
672 tmp
|= reg
<< BGMAC_PA_REG_SHIFT
;
674 bcma_write32(core
, phy_access_addr
, tmp
);
676 if (!bgmac_wait_value(core
, phy_access_addr
, BGMAC_PA_START
, 0, 1000)) {
677 bgmac_err(bgmac
, "Writing to PHY %d register 0x%X failed\n",
685 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyforce */
686 static void bgmac_phy_force(struct bgmac
*bgmac
)
689 u16 mask
= ~(BGMAC_PHY_CTL_SPEED
| BGMAC_PHY_CTL_SPEED_MSB
|
690 BGMAC_PHY_CTL_ANENAB
| BGMAC_PHY_CTL_DUPLEX
);
692 if (bgmac
->phyaddr
== BGMAC_PHY_NOREGS
)
698 ctl
= bgmac_phy_read(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_CTL
);
700 if (bgmac
->full_duplex
)
701 ctl
|= BGMAC_PHY_CTL_DUPLEX
;
702 if (bgmac
->speed
== BGMAC_SPEED_100
)
703 ctl
|= BGMAC_PHY_CTL_SPEED_100
;
704 else if (bgmac
->speed
== BGMAC_SPEED_1000
)
705 ctl
|= BGMAC_PHY_CTL_SPEED_1000
;
706 bgmac_phy_write(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_CTL
, ctl
);
709 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyadvertise */
710 static void bgmac_phy_advertise(struct bgmac
*bgmac
)
714 if (bgmac
->phyaddr
== BGMAC_PHY_NOREGS
)
720 /* Adv selected 10/100 speeds */
721 adv
= bgmac_phy_read(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_ADV
);
722 adv
&= ~(BGMAC_PHY_ADV_10HALF
| BGMAC_PHY_ADV_10FULL
|
723 BGMAC_PHY_ADV_100HALF
| BGMAC_PHY_ADV_100FULL
);
724 if (!bgmac
->full_duplex
&& bgmac
->speed
& BGMAC_SPEED_10
)
725 adv
|= BGMAC_PHY_ADV_10HALF
;
726 if (!bgmac
->full_duplex
&& bgmac
->speed
& BGMAC_SPEED_100
)
727 adv
|= BGMAC_PHY_ADV_100HALF
;
728 if (bgmac
->full_duplex
&& bgmac
->speed
& BGMAC_SPEED_10
)
729 adv
|= BGMAC_PHY_ADV_10FULL
;
730 if (bgmac
->full_duplex
&& bgmac
->speed
& BGMAC_SPEED_100
)
731 adv
|= BGMAC_PHY_ADV_100FULL
;
732 bgmac_phy_write(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_ADV
, adv
);
734 /* Adv selected 1000 speeds */
735 adv
= bgmac_phy_read(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_ADV2
);
736 adv
&= ~(BGMAC_PHY_ADV2_1000HALF
| BGMAC_PHY_ADV2_1000FULL
);
737 if (!bgmac
->full_duplex
&& bgmac
->speed
& BGMAC_SPEED_1000
)
738 adv
|= BGMAC_PHY_ADV2_1000HALF
;
739 if (bgmac
->full_duplex
&& bgmac
->speed
& BGMAC_SPEED_1000
)
740 adv
|= BGMAC_PHY_ADV2_1000FULL
;
741 bgmac_phy_write(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_ADV2
, adv
);
744 bgmac_phy_write(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_CTL
,
745 bgmac_phy_read(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_CTL
) |
746 BGMAC_PHY_CTL_RESTART
);
749 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyinit */
750 static void bgmac_phy_init(struct bgmac
*bgmac
)
752 struct bcma_chipinfo
*ci
= &bgmac
->core
->bus
->chipinfo
;
753 struct bcma_drv_cc
*cc
= &bgmac
->core
->bus
->drv_cc
;
756 if (ci
->id
== BCMA_CHIP_ID_BCM5356
) {
757 for (i
= 0; i
< 5; i
++) {
758 bgmac_phy_write(bgmac
, i
, 0x1f, 0x008b);
759 bgmac_phy_write(bgmac
, i
, 0x15, 0x0100);
760 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000f);
761 bgmac_phy_write(bgmac
, i
, 0x12, 0x2aaa);
762 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000b);
765 if ((ci
->id
== BCMA_CHIP_ID_BCM5357
&& ci
->pkg
!= 10) ||
766 (ci
->id
== BCMA_CHIP_ID_BCM4749
&& ci
->pkg
!= 10) ||
767 (ci
->id
== BCMA_CHIP_ID_BCM53572
&& ci
->pkg
!= 9)) {
768 bcma_chipco_chipctl_maskset(cc
, 2, ~0xc0000000, 0);
769 bcma_chipco_chipctl_maskset(cc
, 4, ~0x80000000, 0);
770 for (i
= 0; i
< 5; i
++) {
771 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000f);
772 bgmac_phy_write(bgmac
, i
, 0x16, 0x5284);
773 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000b);
774 bgmac_phy_write(bgmac
, i
, 0x17, 0x0010);
775 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000f);
776 bgmac_phy_write(bgmac
, i
, 0x16, 0x5296);
777 bgmac_phy_write(bgmac
, i
, 0x17, 0x1073);
778 bgmac_phy_write(bgmac
, i
, 0x17, 0x9073);
779 bgmac_phy_write(bgmac
, i
, 0x16, 0x52b6);
780 bgmac_phy_write(bgmac
, i
, 0x17, 0x9273);
781 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000b);
786 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */
787 static void bgmac_phy_reset(struct bgmac
*bgmac
)
789 if (bgmac
->phyaddr
== BGMAC_PHY_NOREGS
)
792 bgmac_phy_write(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_CTL
,
793 BGMAC_PHY_CTL_RESET
);
795 if (bgmac_phy_read(bgmac
, bgmac
->phyaddr
, BGMAC_PHY_CTL
) &
797 bgmac_err(bgmac
, "PHY reset failed\n");
798 bgmac_phy_init(bgmac
);
801 /**************************************************
803 **************************************************/
805 /* TODO: can we just drop @force? Can we don't reset MAC at all if there is
806 * nothing to change? Try if after stabilizng driver.
808 static void bgmac_cmdcfg_maskset(struct bgmac
*bgmac
, u32 mask
, u32 set
,
811 u32 cmdcfg
= bgmac_read(bgmac
, BGMAC_CMDCFG
);
812 u32 new_val
= (cmdcfg
& mask
) | set
;
814 bgmac_set(bgmac
, BGMAC_CMDCFG
, BGMAC_CMDCFG_SR
);
817 if (new_val
!= cmdcfg
|| force
)
818 bgmac_write(bgmac
, BGMAC_CMDCFG
, new_val
);
820 bgmac_mask(bgmac
, BGMAC_CMDCFG
, ~BGMAC_CMDCFG_SR
);
824 static void bgmac_write_mac_address(struct bgmac
*bgmac
, u8
*addr
)
828 tmp
= (addr
[0] << 24) | (addr
[1] << 16) | (addr
[2] << 8) | addr
[3];
829 bgmac_write(bgmac
, BGMAC_MACADDR_HIGH
, tmp
);
830 tmp
= (addr
[4] << 8) | addr
[5];
831 bgmac_write(bgmac
, BGMAC_MACADDR_LOW
, tmp
);
834 static void bgmac_set_rx_mode(struct net_device
*net_dev
)
836 struct bgmac
*bgmac
= netdev_priv(net_dev
);
838 if (net_dev
->flags
& IFF_PROMISC
)
839 bgmac_cmdcfg_maskset(bgmac
, ~0, BGMAC_CMDCFG_PROM
, true);
841 bgmac_cmdcfg_maskset(bgmac
, ~BGMAC_CMDCFG_PROM
, 0, true);
844 #if 0 /* We don't use that regs yet */
845 static void bgmac_chip_stats_update(struct bgmac
*bgmac
)
849 if (bgmac
->core
->id
.id
!= BCMA_CORE_4706_MAC_GBIT
) {
850 for (i
= 0; i
< BGMAC_NUM_MIB_TX_REGS
; i
++)
851 bgmac
->mib_tx_regs
[i
] =
853 BGMAC_TX_GOOD_OCTETS
+ (i
* 4));
854 for (i
= 0; i
< BGMAC_NUM_MIB_RX_REGS
; i
++)
855 bgmac
->mib_rx_regs
[i
] =
857 BGMAC_RX_GOOD_OCTETS
+ (i
* 4));
860 /* TODO: what else? how to handle BCM4706? Specs are needed */
864 static void bgmac_clear_mib(struct bgmac
*bgmac
)
868 if (bgmac
->core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
)
871 bgmac_set(bgmac
, BGMAC_DEV_CTL
, BGMAC_DC_MROR
);
872 for (i
= 0; i
< BGMAC_NUM_MIB_TX_REGS
; i
++)
873 bgmac_read(bgmac
, BGMAC_TX_GOOD_OCTETS
+ (i
* 4));
874 for (i
= 0; i
< BGMAC_NUM_MIB_RX_REGS
; i
++)
875 bgmac_read(bgmac
, BGMAC_RX_GOOD_OCTETS
+ (i
* 4));
878 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_speed */
879 static void bgmac_speed(struct bgmac
*bgmac
, int speed
)
881 u32 mask
= ~(BGMAC_CMDCFG_ES_MASK
| BGMAC_CMDCFG_HD
);
884 if (speed
& BGMAC_SPEED_10
)
885 set
|= BGMAC_CMDCFG_ES_10
;
886 if (speed
& BGMAC_SPEED_100
)
887 set
|= BGMAC_CMDCFG_ES_100
;
888 if (speed
& BGMAC_SPEED_1000
)
889 set
|= BGMAC_CMDCFG_ES_1000
;
890 if (!bgmac
->full_duplex
)
891 set
|= BGMAC_CMDCFG_HD
;
892 bgmac_cmdcfg_maskset(bgmac
, mask
, set
, true);
895 static void bgmac_miiconfig(struct bgmac
*bgmac
)
897 u8 imode
= (bgmac_read(bgmac
, BGMAC_DEV_STATUS
) & BGMAC_DS_MM_MASK
) >>
899 if (imode
== 0 || imode
== 1) {
901 bgmac_speed(bgmac
, BGMAC_SPEED_100
);
903 bgmac_speed(bgmac
, bgmac
->speed
);
907 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipreset */
908 static void bgmac_chip_reset(struct bgmac
*bgmac
)
910 struct bcma_device
*core
= bgmac
->core
;
911 struct bcma_bus
*bus
= core
->bus
;
912 struct bcma_chipinfo
*ci
= &bus
->chipinfo
;
917 if (bcma_core_is_enabled(core
)) {
918 if (!bgmac
->stats_grabbed
) {
919 /* bgmac_chip_stats_update(bgmac); */
920 bgmac
->stats_grabbed
= true;
923 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++)
924 bgmac_dma_tx_reset(bgmac
, &bgmac
->tx_ring
[i
]);
926 bgmac_cmdcfg_maskset(bgmac
, ~0, BGMAC_CMDCFG_ML
, false);
929 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++)
930 bgmac_dma_rx_reset(bgmac
, &bgmac
->rx_ring
[i
]);
932 /* TODO: Clear software multicast filter list */
935 iost
= bcma_aread32(core
, BCMA_IOST
);
936 if ((ci
->id
== BCMA_CHIP_ID_BCM5357
&& ci
->pkg
== 10) ||
937 (ci
->id
== BCMA_CHIP_ID_BCM4749
&& ci
->pkg
== 10) ||
938 (ci
->id
== BCMA_CHIP_ID_BCM53572
&& ci
->pkg
== 9))
939 iost
&= ~BGMAC_BCMA_IOST_ATTACHED
;
941 if (iost
& BGMAC_BCMA_IOST_ATTACHED
) {
942 flags
= BGMAC_BCMA_IOCTL_SW_CLKEN
;
943 if (!bgmac
->has_robosw
)
944 flags
|= BGMAC_BCMA_IOCTL_SW_RESET
;
947 bcma_core_enable(core
, flags
);
949 if (core
->id
.rev
> 2) {
950 bgmac_set(bgmac
, BCMA_CLKCTLST
, 1 << 8);
951 bgmac_wait_value(bgmac
->core
, BCMA_CLKCTLST
, 1 << 24, 1 << 24,
955 if (ci
->id
== BCMA_CHIP_ID_BCM5357
|| ci
->id
== BCMA_CHIP_ID_BCM4749
||
956 ci
->id
== BCMA_CHIP_ID_BCM53572
) {
957 struct bcma_drv_cc
*cc
= &bgmac
->core
->bus
->drv_cc
;
959 u8 sw_type
= BGMAC_CHIPCTL_1_SW_TYPE_EPHY
|
960 BGMAC_CHIPCTL_1_IF_TYPE_MII
;
963 if (bcm47xx_nvram_getenv("et_swtype", buf
, sizeof(buf
)) > 0) {
964 if (kstrtou8(buf
, 0, &et_swtype
))
965 bgmac_err(bgmac
, "Failed to parse et_swtype (%s)\n",
970 } else if (ci
->id
== BCMA_CHIP_ID_BCM5357
&& ci
->pkg
== 9) {
971 sw_type
= BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII
;
972 } else if ((ci
->id
!= BCMA_CHIP_ID_BCM53572
&& ci
->pkg
== 10) ||
973 (ci
->id
== BCMA_CHIP_ID_BCM53572
&& ci
->pkg
== 9)) {
974 sw_type
= BGMAC_CHIPCTL_1_IF_TYPE_RGMII
|
975 BGMAC_CHIPCTL_1_SW_TYPE_RGMII
;
977 bcma_chipco_chipctl_maskset(cc
, 1,
978 ~(BGMAC_CHIPCTL_1_IF_TYPE_MASK
|
979 BGMAC_CHIPCTL_1_SW_TYPE_MASK
),
983 if (iost
& BGMAC_BCMA_IOST_ATTACHED
&& !bgmac
->has_robosw
)
984 bcma_awrite32(core
, BCMA_IOCTL
,
985 bcma_aread32(core
, BCMA_IOCTL
) &
986 ~BGMAC_BCMA_IOCTL_SW_RESET
);
988 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_reset
989 * Specs don't say about using BGMAC_CMDCFG_SR, but in this routine
990 * BGMAC_CMDCFG is read _after_ putting chip in a reset. So it has to
991 * be keps until taking MAC out of the reset.
993 bgmac_cmdcfg_maskset(bgmac
,
1005 BGMAC_CMDCFG_PAD_EN
|
1013 bgmac_clear_mib(bgmac
);
1014 if (core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
)
1015 bcma_maskset32(bgmac
->cmn
, BCMA_GMAC_CMN_PHY_CTL
, ~0,
1016 BCMA_GMAC_CMN_PC_MTE
);
1018 bgmac_set(bgmac
, BGMAC_PHY_CNTL
, BGMAC_PC_MTE
);
1019 bgmac_miiconfig(bgmac
);
1020 bgmac_phy_init(bgmac
);
1022 netdev_reset_queue(bgmac
->net_dev
);
1024 bgmac
->int_status
= 0;
1027 static void bgmac_chip_intrs_on(struct bgmac
*bgmac
)
1029 bgmac_write(bgmac
, BGMAC_INT_MASK
, bgmac
->int_mask
);
1032 static void bgmac_chip_intrs_off(struct bgmac
*bgmac
)
1034 bgmac_write(bgmac
, BGMAC_INT_MASK
, 0);
1035 bgmac_read(bgmac
, BGMAC_INT_MASK
);
1038 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_enable */
1039 static void bgmac_enable(struct bgmac
*bgmac
)
1041 struct bcma_chipinfo
*ci
= &bgmac
->core
->bus
->chipinfo
;
1049 cmdcfg
= bgmac_read(bgmac
, BGMAC_CMDCFG
);
1050 bgmac_cmdcfg_maskset(bgmac
, ~(BGMAC_CMDCFG_TE
| BGMAC_CMDCFG_RE
),
1051 BGMAC_CMDCFG_SR
, true);
1053 cmdcfg
|= BGMAC_CMDCFG_TE
| BGMAC_CMDCFG_RE
;
1054 bgmac_write(bgmac
, BGMAC_CMDCFG
, cmdcfg
);
1056 mode
= (bgmac_read(bgmac
, BGMAC_DEV_STATUS
) & BGMAC_DS_MM_MASK
) >>
1058 if (ci
->id
!= BCMA_CHIP_ID_BCM47162
|| mode
!= 0)
1059 bgmac_set(bgmac
, BCMA_CLKCTLST
, BCMA_CLKCTLST_FORCEHT
);
1060 if (ci
->id
== BCMA_CHIP_ID_BCM47162
&& mode
== 2)
1061 bcma_chipco_chipctl_maskset(&bgmac
->core
->bus
->drv_cc
, 1, ~0,
1062 BGMAC_CHIPCTL_1_RXC_DLL_BYPASS
);
1065 case BCMA_CHIP_ID_BCM5357
:
1066 case BCMA_CHIP_ID_BCM4749
:
1067 case BCMA_CHIP_ID_BCM53572
:
1068 case BCMA_CHIP_ID_BCM4716
:
1069 case BCMA_CHIP_ID_BCM47162
:
1070 fl_ctl
= 0x03cb04cb;
1071 if (ci
->id
== BCMA_CHIP_ID_BCM5357
||
1072 ci
->id
== BCMA_CHIP_ID_BCM4749
||
1073 ci
->id
== BCMA_CHIP_ID_BCM53572
)
1075 bgmac_write(bgmac
, BGMAC_FLOW_CTL_THRESH
, fl_ctl
);
1076 bgmac_write(bgmac
, BGMAC_PAUSE_CTL
, 0x27fff);
1080 rxq_ctl
= bgmac_read(bgmac
, BGMAC_RXQ_CTL
);
1081 rxq_ctl
&= ~BGMAC_RXQ_CTL_MDP_MASK
;
1082 bp_clk
= bcma_pmu_get_bus_clock(&bgmac
->core
->bus
->drv_cc
) / 1000000;
1083 mdp
= (bp_clk
* 128 / 1000) - 3;
1084 rxq_ctl
|= (mdp
<< BGMAC_RXQ_CTL_MDP_SHIFT
);
1085 bgmac_write(bgmac
, BGMAC_RXQ_CTL
, rxq_ctl
);
1088 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */
1089 static void bgmac_chip_init(struct bgmac
*bgmac
, bool full_init
)
1091 struct bgmac_dma_ring
*ring
;
1094 /* 1 interrupt per received frame */
1095 bgmac_write(bgmac
, BGMAC_INT_RECV_LAZY
, 1 << BGMAC_IRL_FC_SHIFT
);
1097 /* Enable 802.3x tx flow control (honor received PAUSE frames) */
1098 bgmac_cmdcfg_maskset(bgmac
, ~BGMAC_CMDCFG_RPI
, 0, true);
1100 bgmac_set_rx_mode(bgmac
->net_dev
);
1102 bgmac_write_mac_address(bgmac
, bgmac
->net_dev
->dev_addr
);
1104 if (bgmac
->loopback
)
1105 bgmac_cmdcfg_maskset(bgmac
, ~0, BGMAC_CMDCFG_ML
, false);
1107 bgmac_cmdcfg_maskset(bgmac
, ~BGMAC_CMDCFG_ML
, 0, false);
1109 bgmac_write(bgmac
, BGMAC_RXMAX_LENGTH
, 32 + ETHER_MAX_LEN
);
1111 if (!bgmac
->autoneg
) {
1112 bgmac_speed(bgmac
, bgmac
->speed
);
1113 bgmac_phy_force(bgmac
);
1114 } else if (bgmac
->speed
) { /* if there is anything to adv */
1115 bgmac_phy_advertise(bgmac
);
1119 bgmac_dma_init(bgmac
);
1120 if (1) /* FIXME: is there any case we don't want IRQs? */
1121 bgmac_chip_intrs_on(bgmac
);
1123 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++) {
1124 ring
= &bgmac
->rx_ring
[i
];
1125 bgmac_dma_rx_enable(bgmac
, ring
);
1129 bgmac_enable(bgmac
);
1132 static irqreturn_t
bgmac_interrupt(int irq
, void *dev_id
)
1134 struct bgmac
*bgmac
= netdev_priv(dev_id
);
1136 u32 int_status
= bgmac_read(bgmac
, BGMAC_INT_STATUS
);
1137 int_status
&= bgmac
->int_mask
;
1143 bgmac_write(bgmac
, BGMAC_INT_STATUS
, int_status
);
1145 /* Disable new interrupts until handling existing ones */
1146 bgmac_chip_intrs_off(bgmac
);
1148 bgmac
->int_status
= int_status
;
1150 napi_schedule(&bgmac
->napi
);
1155 static int bgmac_poll(struct napi_struct
*napi
, int weight
)
1157 struct bgmac
*bgmac
= container_of(napi
, struct bgmac
, napi
);
1158 struct bgmac_dma_ring
*ring
;
1161 if (bgmac
->int_status
& BGMAC_IS_TX0
) {
1162 ring
= &bgmac
->tx_ring
[0];
1163 bgmac_dma_tx_free(bgmac
, ring
);
1164 bgmac
->int_status
&= ~BGMAC_IS_TX0
;
1167 if (bgmac
->int_status
& BGMAC_IS_RX
) {
1168 ring
= &bgmac
->rx_ring
[0];
1169 handled
+= bgmac_dma_rx_read(bgmac
, ring
, weight
);
1170 bgmac
->int_status
&= ~BGMAC_IS_RX
;
1173 if (bgmac
->int_status
) {
1174 bgmac_err(bgmac
, "Unknown IRQs: 0x%08X\n", bgmac
->int_status
);
1175 bgmac
->int_status
= 0;
1178 if (handled
< weight
)
1179 napi_complete(napi
);
1181 bgmac_chip_intrs_on(bgmac
);
1186 /**************************************************
1188 **************************************************/
1190 static int bgmac_open(struct net_device
*net_dev
)
1192 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1195 bgmac_chip_reset(bgmac
);
1196 /* Specs say about reclaiming rings here, but we do that in DMA init */
1197 bgmac_chip_init(bgmac
, true);
1199 err
= request_irq(bgmac
->core
->irq
, bgmac_interrupt
, IRQF_SHARED
,
1200 KBUILD_MODNAME
, net_dev
);
1202 bgmac_err(bgmac
, "IRQ request error: %d!\n", err
);
1205 napi_enable(&bgmac
->napi
);
1207 netif_carrier_on(net_dev
);
1213 static int bgmac_stop(struct net_device
*net_dev
)
1215 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1217 netif_carrier_off(net_dev
);
1219 napi_disable(&bgmac
->napi
);
1220 bgmac_chip_intrs_off(bgmac
);
1221 free_irq(bgmac
->core
->irq
, net_dev
);
1223 bgmac_chip_reset(bgmac
);
1228 static netdev_tx_t
bgmac_start_xmit(struct sk_buff
*skb
,
1229 struct net_device
*net_dev
)
1231 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1232 struct bgmac_dma_ring
*ring
;
1234 /* No QOS support yet */
1235 ring
= &bgmac
->tx_ring
[0];
1236 return bgmac_dma_tx_add(bgmac
, ring
, skb
);
1239 static int bgmac_set_mac_address(struct net_device
*net_dev
, void *addr
)
1241 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1244 ret
= eth_prepare_mac_addr_change(net_dev
, addr
);
1247 bgmac_write_mac_address(bgmac
, (u8
*)addr
);
1248 eth_commit_mac_addr_change(net_dev
, addr
);
1252 static int bgmac_ioctl(struct net_device
*net_dev
, struct ifreq
*ifr
, int cmd
)
1254 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1255 struct mii_ioctl_data
*data
= if_mii(ifr
);
1259 data
->phy_id
= bgmac
->phyaddr
;
1262 if (!netif_running(net_dev
))
1264 data
->val_out
= bgmac_phy_read(bgmac
, data
->phy_id
,
1265 data
->reg_num
& 0x1f);
1268 if (!netif_running(net_dev
))
1270 bgmac_phy_write(bgmac
, data
->phy_id
, data
->reg_num
& 0x1f,
1278 static const struct net_device_ops bgmac_netdev_ops
= {
1279 .ndo_open
= bgmac_open
,
1280 .ndo_stop
= bgmac_stop
,
1281 .ndo_start_xmit
= bgmac_start_xmit
,
1282 .ndo_set_rx_mode
= bgmac_set_rx_mode
,
1283 .ndo_set_mac_address
= bgmac_set_mac_address
,
1284 .ndo_validate_addr
= eth_validate_addr
,
1285 .ndo_do_ioctl
= bgmac_ioctl
,
1288 /**************************************************
1290 **************************************************/
1292 static int bgmac_get_settings(struct net_device
*net_dev
,
1293 struct ethtool_cmd
*cmd
)
1295 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1297 cmd
->supported
= SUPPORTED_10baseT_Half
|
1298 SUPPORTED_10baseT_Full
|
1299 SUPPORTED_100baseT_Half
|
1300 SUPPORTED_100baseT_Full
|
1301 SUPPORTED_1000baseT_Half
|
1302 SUPPORTED_1000baseT_Full
|
1305 if (bgmac
->autoneg
) {
1306 WARN_ON(cmd
->advertising
);
1307 if (bgmac
->full_duplex
) {
1308 if (bgmac
->speed
& BGMAC_SPEED_10
)
1309 cmd
->advertising
|= ADVERTISED_10baseT_Full
;
1310 if (bgmac
->speed
& BGMAC_SPEED_100
)
1311 cmd
->advertising
|= ADVERTISED_100baseT_Full
;
1312 if (bgmac
->speed
& BGMAC_SPEED_1000
)
1313 cmd
->advertising
|= ADVERTISED_1000baseT_Full
;
1315 if (bgmac
->speed
& BGMAC_SPEED_10
)
1316 cmd
->advertising
|= ADVERTISED_10baseT_Half
;
1317 if (bgmac
->speed
& BGMAC_SPEED_100
)
1318 cmd
->advertising
|= ADVERTISED_100baseT_Half
;
1319 if (bgmac
->speed
& BGMAC_SPEED_1000
)
1320 cmd
->advertising
|= ADVERTISED_1000baseT_Half
;
1323 switch (bgmac
->speed
) {
1324 case BGMAC_SPEED_10
:
1325 ethtool_cmd_speed_set(cmd
, SPEED_10
);
1327 case BGMAC_SPEED_100
:
1328 ethtool_cmd_speed_set(cmd
, SPEED_100
);
1330 case BGMAC_SPEED_1000
:
1331 ethtool_cmd_speed_set(cmd
, SPEED_1000
);
1336 cmd
->duplex
= bgmac
->full_duplex
? DUPLEX_FULL
: DUPLEX_HALF
;
1338 cmd
->autoneg
= bgmac
->autoneg
;
1344 static int bgmac_set_settings(struct net_device
*net_dev
,
1345 struct ethtool_cmd
*cmd
)
1347 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1353 static void bgmac_get_drvinfo(struct net_device
*net_dev
,
1354 struct ethtool_drvinfo
*info
)
1356 strlcpy(info
->driver
, KBUILD_MODNAME
, sizeof(info
->driver
));
1357 strlcpy(info
->bus_info
, "BCMA", sizeof(info
->bus_info
));
1360 static const struct ethtool_ops bgmac_ethtool_ops
= {
1361 .get_settings
= bgmac_get_settings
,
1362 .get_drvinfo
= bgmac_get_drvinfo
,
1365 /**************************************************
1367 **************************************************/
1369 static int bgmac_mii_read(struct mii_bus
*bus
, int mii_id
, int regnum
)
1371 return bgmac_phy_read(bus
->priv
, mii_id
, regnum
);
1374 static int bgmac_mii_write(struct mii_bus
*bus
, int mii_id
, int regnum
,
1377 return bgmac_phy_write(bus
->priv
, mii_id
, regnum
, value
);
1380 static int bgmac_mii_register(struct bgmac
*bgmac
)
1382 struct mii_bus
*mii_bus
;
1385 mii_bus
= mdiobus_alloc();
1389 mii_bus
->name
= "bgmac mii bus";
1390 sprintf(mii_bus
->id
, "%s-%d-%d", "bgmac", bgmac
->core
->bus
->num
,
1391 bgmac
->core
->core_unit
);
1392 mii_bus
->priv
= bgmac
;
1393 mii_bus
->read
= bgmac_mii_read
;
1394 mii_bus
->write
= bgmac_mii_write
;
1395 mii_bus
->parent
= &bgmac
->core
->dev
;
1396 mii_bus
->phy_mask
= ~(1 << bgmac
->phyaddr
);
1398 mii_bus
->irq
= kmalloc_array(PHY_MAX_ADDR
, sizeof(int), GFP_KERNEL
);
1399 if (!mii_bus
->irq
) {
1403 for (i
= 0; i
< PHY_MAX_ADDR
; i
++)
1404 mii_bus
->irq
[i
] = PHY_POLL
;
1406 err
= mdiobus_register(mii_bus
);
1408 bgmac_err(bgmac
, "Registration of mii bus failed\n");
1412 bgmac
->mii_bus
= mii_bus
;
1417 kfree(mii_bus
->irq
);
1419 mdiobus_free(mii_bus
);
1423 static void bgmac_mii_unregister(struct bgmac
*bgmac
)
1425 struct mii_bus
*mii_bus
= bgmac
->mii_bus
;
1427 mdiobus_unregister(mii_bus
);
1428 kfree(mii_bus
->irq
);
1429 mdiobus_free(mii_bus
);
1432 /**************************************************
1434 **************************************************/
1436 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */
1437 static int bgmac_probe(struct bcma_device
*core
)
1439 struct net_device
*net_dev
;
1440 struct bgmac
*bgmac
;
1441 struct ssb_sprom
*sprom
= &core
->bus
->sprom
;
1442 u8
*mac
= core
->core_unit
? sprom
->et1mac
: sprom
->et0mac
;
1445 /* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */
1446 if (core
->core_unit
> 1) {
1447 pr_err("Unsupported core_unit %d\n", core
->core_unit
);
1451 if (!is_valid_ether_addr(mac
)) {
1452 dev_err(&core
->dev
, "Invalid MAC addr: %pM\n", mac
);
1453 eth_random_addr(mac
);
1454 dev_warn(&core
->dev
, "Using random MAC: %pM\n", mac
);
1457 /* Allocation and references */
1458 net_dev
= alloc_etherdev(sizeof(*bgmac
));
1461 net_dev
->netdev_ops
= &bgmac_netdev_ops
;
1462 net_dev
->irq
= core
->irq
;
1463 SET_ETHTOOL_OPS(net_dev
, &bgmac_ethtool_ops
);
1464 bgmac
= netdev_priv(net_dev
);
1465 bgmac
->net_dev
= net_dev
;
1467 bcma_set_drvdata(core
, bgmac
);
1470 bgmac
->autoneg
= true;
1471 bgmac
->full_duplex
= true;
1472 bgmac
->speed
= BGMAC_SPEED_10
| BGMAC_SPEED_100
| BGMAC_SPEED_1000
;
1473 memcpy(bgmac
->net_dev
->dev_addr
, mac
, ETH_ALEN
);
1475 /* On BCM4706 we need common core to access PHY */
1476 if (core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
&&
1477 !core
->bus
->drv_gmac_cmn
.core
) {
1478 bgmac_err(bgmac
, "GMAC CMN core not found (required for BCM4706)\n");
1480 goto err_netdev_free
;
1482 bgmac
->cmn
= core
->bus
->drv_gmac_cmn
.core
;
1484 bgmac
->phyaddr
= core
->core_unit
? sprom
->et1phyaddr
:
1486 bgmac
->phyaddr
&= BGMAC_PHY_MASK
;
1487 if (bgmac
->phyaddr
== BGMAC_PHY_MASK
) {
1488 bgmac_err(bgmac
, "No PHY found\n");
1490 goto err_netdev_free
;
1492 bgmac_info(bgmac
, "Found PHY addr: %d%s\n", bgmac
->phyaddr
,
1493 bgmac
->phyaddr
== BGMAC_PHY_NOREGS
? " (NOREGS)" : "");
1495 if (core
->bus
->hosttype
== BCMA_HOSTTYPE_PCI
) {
1496 bgmac_err(bgmac
, "PCI setup not implemented\n");
1498 goto err_netdev_free
;
1501 bgmac_chip_reset(bgmac
);
1503 err
= bgmac_dma_alloc(bgmac
);
1505 bgmac_err(bgmac
, "Unable to alloc memory for DMA\n");
1506 goto err_netdev_free
;
1509 bgmac
->int_mask
= BGMAC_IS_ERRMASK
| BGMAC_IS_RX
| BGMAC_IS_TX_MASK
;
1510 if (bcm47xx_nvram_getenv("et0_no_txint", NULL
, 0) == 0)
1511 bgmac
->int_mask
&= ~BGMAC_IS_TX_MASK
;
1513 /* TODO: reset the external phy. Specs are needed */
1514 bgmac_phy_reset(bgmac
);
1516 bgmac
->has_robosw
= !!(core
->bus
->sprom
.boardflags_lo
&
1517 BGMAC_BFL_ENETROBO
);
1518 if (bgmac
->has_robosw
)
1519 bgmac_warn(bgmac
, "Support for Roboswitch not implemented\n");
1521 if (core
->bus
->sprom
.boardflags_lo
& BGMAC_BFL_ENETADM
)
1522 bgmac_warn(bgmac
, "Support for ADMtek ethernet switch not implemented\n");
1524 err
= bgmac_mii_register(bgmac
);
1526 bgmac_err(bgmac
, "Cannot register MDIO\n");
1531 err
= register_netdev(bgmac
->net_dev
);
1533 bgmac_err(bgmac
, "Cannot register net device\n");
1535 goto err_mii_unregister
;
1538 netif_carrier_off(net_dev
);
1540 netif_napi_add(net_dev
, &bgmac
->napi
, bgmac_poll
, BGMAC_WEIGHT
);
1545 bgmac_mii_unregister(bgmac
);
1547 bgmac_dma_free(bgmac
);
1550 bcma_set_drvdata(core
, NULL
);
1551 free_netdev(net_dev
);
1556 static void bgmac_remove(struct bcma_device
*core
)
1558 struct bgmac
*bgmac
= bcma_get_drvdata(core
);
1560 netif_napi_del(&bgmac
->napi
);
1561 unregister_netdev(bgmac
->net_dev
);
1562 bgmac_mii_unregister(bgmac
);
1563 bgmac_dma_free(bgmac
);
1564 bcma_set_drvdata(core
, NULL
);
1565 free_netdev(bgmac
->net_dev
);
1568 static struct bcma_driver bgmac_bcma_driver
= {
1569 .name
= KBUILD_MODNAME
,
1570 .id_table
= bgmac_bcma_tbl
,
1571 .probe
= bgmac_probe
,
1572 .remove
= bgmac_remove
,
1575 static int __init
bgmac_init(void)
1579 err
= bcma_driver_register(&bgmac_bcma_driver
);
1582 pr_info("Broadcom 47xx GBit MAC driver loaded\n");
1587 static void __exit
bgmac_exit(void)
1589 bcma_driver_unregister(&bgmac_bcma_driver
);
1592 module_init(bgmac_init
)
1593 module_exit(bgmac_exit
)
1595 MODULE_AUTHOR("Rafał Miłecki");
1596 MODULE_LICENSE("GPL");