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1 | /* | |
2 | * Driver for Marvell Discovery (MV643XX) and Marvell Orion ethernet ports | |
3 | * Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com> | |
4 | * | |
5 | * Based on the 64360 driver from: | |
6 | * Copyright (C) 2002 Rabeeh Khoury <rabeeh@galileo.co.il> | |
7 | * Rabeeh Khoury <rabeeh@marvell.com> | |
8 | * | |
9 | * Copyright (C) 2003 PMC-Sierra, Inc., | |
10 | * written by Manish Lachwani | |
11 | * | |
12 | * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org> | |
13 | * | |
14 | * Copyright (C) 2004-2006 MontaVista Software, Inc. | |
15 | * Dale Farnsworth <dale@farnsworth.org> | |
16 | * | |
17 | * Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com> | |
18 | * <sjhill@realitydiluted.com> | |
19 | * | |
20 | * Copyright (C) 2007-2008 Marvell Semiconductor | |
21 | * Lennert Buytenhek <buytenh@marvell.com> | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or | |
24 | * modify it under the terms of the GNU General Public License | |
25 | * as published by the Free Software Foundation; either version 2 | |
26 | * of the License, or (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
31 | * GNU General Public License for more details. | |
32 | * | |
33 | * You should have received a copy of the GNU General Public License | |
34 | * along with this program; if not, write to the Free Software | |
35 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
36 | */ | |
37 | ||
38 | #include <linux/init.h> | |
39 | #include <linux/dma-mapping.h> | |
40 | #include <linux/in.h> | |
41 | #include <linux/ip.h> | |
42 | #include <linux/tcp.h> | |
43 | #include <linux/udp.h> | |
44 | #include <linux/etherdevice.h> | |
45 | #include <linux/delay.h> | |
46 | #include <linux/ethtool.h> | |
47 | #include <linux/platform_device.h> | |
48 | #include <linux/module.h> | |
49 | #include <linux/kernel.h> | |
50 | #include <linux/spinlock.h> | |
51 | #include <linux/workqueue.h> | |
52 | #include <linux/phy.h> | |
53 | #include <linux/mv643xx_eth.h> | |
54 | #include <linux/io.h> | |
55 | #include <linux/types.h> | |
56 | #include <linux/inet_lro.h> | |
57 | #include <asm/system.h> | |
58 | ||
59 | static char mv643xx_eth_driver_name[] = "mv643xx_eth"; | |
60 | static char mv643xx_eth_driver_version[] = "1.4"; | |
61 | ||
62 | ||
63 | /* | |
64 | * Registers shared between all ports. | |
65 | */ | |
66 | #define PHY_ADDR 0x0000 | |
67 | #define SMI_REG 0x0004 | |
68 | #define SMI_BUSY 0x10000000 | |
69 | #define SMI_READ_VALID 0x08000000 | |
70 | #define SMI_OPCODE_READ 0x04000000 | |
71 | #define SMI_OPCODE_WRITE 0x00000000 | |
72 | #define ERR_INT_CAUSE 0x0080 | |
73 | #define ERR_INT_SMI_DONE 0x00000010 | |
74 | #define ERR_INT_MASK 0x0084 | |
75 | #define WINDOW_BASE(w) (0x0200 + ((w) << 3)) | |
76 | #define WINDOW_SIZE(w) (0x0204 + ((w) << 3)) | |
77 | #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2)) | |
78 | #define WINDOW_BAR_ENABLE 0x0290 | |
79 | #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4)) | |
80 | ||
81 | /* | |
82 | * Main per-port registers. These live at offset 0x0400 for | |
83 | * port #0, 0x0800 for port #1, and 0x0c00 for port #2. | |
84 | */ | |
85 | #define PORT_CONFIG 0x0000 | |
86 | #define UNICAST_PROMISCUOUS_MODE 0x00000001 | |
87 | #define PORT_CONFIG_EXT 0x0004 | |
88 | #define MAC_ADDR_LOW 0x0014 | |
89 | #define MAC_ADDR_HIGH 0x0018 | |
90 | #define SDMA_CONFIG 0x001c | |
91 | #define PORT_SERIAL_CONTROL 0x003c | |
92 | #define PORT_STATUS 0x0044 | |
93 | #define TX_FIFO_EMPTY 0x00000400 | |
94 | #define TX_IN_PROGRESS 0x00000080 | |
95 | #define PORT_SPEED_MASK 0x00000030 | |
96 | #define PORT_SPEED_1000 0x00000010 | |
97 | #define PORT_SPEED_100 0x00000020 | |
98 | #define PORT_SPEED_10 0x00000000 | |
99 | #define FLOW_CONTROL_ENABLED 0x00000008 | |
100 | #define FULL_DUPLEX 0x00000004 | |
101 | #define LINK_UP 0x00000002 | |
102 | #define TXQ_COMMAND 0x0048 | |
103 | #define TXQ_FIX_PRIO_CONF 0x004c | |
104 | #define TX_BW_RATE 0x0050 | |
105 | #define TX_BW_MTU 0x0058 | |
106 | #define TX_BW_BURST 0x005c | |
107 | #define INT_CAUSE 0x0060 | |
108 | #define INT_TX_END 0x07f80000 | |
109 | #define INT_RX 0x000003fc | |
110 | #define INT_EXT 0x00000002 | |
111 | #define INT_CAUSE_EXT 0x0064 | |
112 | #define INT_EXT_LINK_PHY 0x00110000 | |
113 | #define INT_EXT_TX 0x000000ff | |
114 | #define INT_MASK 0x0068 | |
115 | #define INT_MASK_EXT 0x006c | |
116 | #define TX_FIFO_URGENT_THRESHOLD 0x0074 | |
117 | #define TXQ_FIX_PRIO_CONF_MOVED 0x00dc | |
118 | #define TX_BW_RATE_MOVED 0x00e0 | |
119 | #define TX_BW_MTU_MOVED 0x00e8 | |
120 | #define TX_BW_BURST_MOVED 0x00ec | |
121 | #define RXQ_CURRENT_DESC_PTR(q) (0x020c + ((q) << 4)) | |
122 | #define RXQ_COMMAND 0x0280 | |
123 | #define TXQ_CURRENT_DESC_PTR(q) (0x02c0 + ((q) << 2)) | |
124 | #define TXQ_BW_TOKENS(q) (0x0300 + ((q) << 4)) | |
125 | #define TXQ_BW_CONF(q) (0x0304 + ((q) << 4)) | |
126 | #define TXQ_BW_WRR_CONF(q) (0x0308 + ((q) << 4)) | |
127 | ||
128 | /* | |
129 | * Misc per-port registers. | |
130 | */ | |
131 | #define MIB_COUNTERS(p) (0x1000 + ((p) << 7)) | |
132 | #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10)) | |
133 | #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10)) | |
134 | #define UNICAST_TABLE(p) (0x1600 + ((p) << 10)) | |
135 | ||
136 | ||
137 | /* | |
138 | * SDMA configuration register. | |
139 | */ | |
140 | #define RX_BURST_SIZE_4_64BIT (2 << 1) | |
141 | #define RX_BURST_SIZE_16_64BIT (4 << 1) | |
142 | #define BLM_RX_NO_SWAP (1 << 4) | |
143 | #define BLM_TX_NO_SWAP (1 << 5) | |
144 | #define TX_BURST_SIZE_4_64BIT (2 << 22) | |
145 | #define TX_BURST_SIZE_16_64BIT (4 << 22) | |
146 | ||
147 | #if defined(__BIG_ENDIAN) | |
148 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ | |
149 | (RX_BURST_SIZE_4_64BIT | \ | |
150 | TX_BURST_SIZE_4_64BIT) | |
151 | #elif defined(__LITTLE_ENDIAN) | |
152 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ | |
153 | (RX_BURST_SIZE_4_64BIT | \ | |
154 | BLM_RX_NO_SWAP | \ | |
155 | BLM_TX_NO_SWAP | \ | |
156 | TX_BURST_SIZE_4_64BIT) | |
157 | #else | |
158 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined | |
159 | #endif | |
160 | ||
161 | ||
162 | /* | |
163 | * Port serial control register. | |
164 | */ | |
165 | #define SET_MII_SPEED_TO_100 (1 << 24) | |
166 | #define SET_GMII_SPEED_TO_1000 (1 << 23) | |
167 | #define SET_FULL_DUPLEX_MODE (1 << 21) | |
168 | #define MAX_RX_PACKET_9700BYTE (5 << 17) | |
169 | #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13) | |
170 | #define DO_NOT_FORCE_LINK_FAIL (1 << 10) | |
171 | #define SERIAL_PORT_CONTROL_RESERVED (1 << 9) | |
172 | #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3) | |
173 | #define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2) | |
174 | #define FORCE_LINK_PASS (1 << 1) | |
175 | #define SERIAL_PORT_ENABLE (1 << 0) | |
176 | ||
177 | #define DEFAULT_RX_QUEUE_SIZE 128 | |
178 | #define DEFAULT_TX_QUEUE_SIZE 256 | |
179 | ||
180 | ||
181 | /* | |
182 | * RX/TX descriptors. | |
183 | */ | |
184 | #if defined(__BIG_ENDIAN) | |
185 | struct rx_desc { | |
186 | u16 byte_cnt; /* Descriptor buffer byte count */ | |
187 | u16 buf_size; /* Buffer size */ | |
188 | u32 cmd_sts; /* Descriptor command status */ | |
189 | u32 next_desc_ptr; /* Next descriptor pointer */ | |
190 | u32 buf_ptr; /* Descriptor buffer pointer */ | |
191 | }; | |
192 | ||
193 | struct tx_desc { | |
194 | u16 byte_cnt; /* buffer byte count */ | |
195 | u16 l4i_chk; /* CPU provided TCP checksum */ | |
196 | u32 cmd_sts; /* Command/status field */ | |
197 | u32 next_desc_ptr; /* Pointer to next descriptor */ | |
198 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ | |
199 | }; | |
200 | #elif defined(__LITTLE_ENDIAN) | |
201 | struct rx_desc { | |
202 | u32 cmd_sts; /* Descriptor command status */ | |
203 | u16 buf_size; /* Buffer size */ | |
204 | u16 byte_cnt; /* Descriptor buffer byte count */ | |
205 | u32 buf_ptr; /* Descriptor buffer pointer */ | |
206 | u32 next_desc_ptr; /* Next descriptor pointer */ | |
207 | }; | |
208 | ||
209 | struct tx_desc { | |
210 | u32 cmd_sts; /* Command/status field */ | |
211 | u16 l4i_chk; /* CPU provided TCP checksum */ | |
212 | u16 byte_cnt; /* buffer byte count */ | |
213 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ | |
214 | u32 next_desc_ptr; /* Pointer to next descriptor */ | |
215 | }; | |
216 | #else | |
217 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined | |
218 | #endif | |
219 | ||
220 | /* RX & TX descriptor command */ | |
221 | #define BUFFER_OWNED_BY_DMA 0x80000000 | |
222 | ||
223 | /* RX & TX descriptor status */ | |
224 | #define ERROR_SUMMARY 0x00000001 | |
225 | ||
226 | /* RX descriptor status */ | |
227 | #define LAYER_4_CHECKSUM_OK 0x40000000 | |
228 | #define RX_ENABLE_INTERRUPT 0x20000000 | |
229 | #define RX_FIRST_DESC 0x08000000 | |
230 | #define RX_LAST_DESC 0x04000000 | |
231 | #define RX_IP_HDR_OK 0x02000000 | |
232 | #define RX_PKT_IS_IPV4 0x01000000 | |
233 | #define RX_PKT_IS_ETHERNETV2 0x00800000 | |
234 | #define RX_PKT_LAYER4_TYPE_MASK 0x00600000 | |
235 | #define RX_PKT_LAYER4_TYPE_TCP_IPV4 0x00000000 | |
236 | #define RX_PKT_IS_VLAN_TAGGED 0x00080000 | |
237 | ||
238 | /* TX descriptor command */ | |
239 | #define TX_ENABLE_INTERRUPT 0x00800000 | |
240 | #define GEN_CRC 0x00400000 | |
241 | #define TX_FIRST_DESC 0x00200000 | |
242 | #define TX_LAST_DESC 0x00100000 | |
243 | #define ZERO_PADDING 0x00080000 | |
244 | #define GEN_IP_V4_CHECKSUM 0x00040000 | |
245 | #define GEN_TCP_UDP_CHECKSUM 0x00020000 | |
246 | #define UDP_FRAME 0x00010000 | |
247 | #define MAC_HDR_EXTRA_4_BYTES 0x00008000 | |
248 | #define MAC_HDR_EXTRA_8_BYTES 0x00000200 | |
249 | ||
250 | #define TX_IHL_SHIFT 11 | |
251 | ||
252 | ||
253 | /* global *******************************************************************/ | |
254 | struct mv643xx_eth_shared_private { | |
255 | /* | |
256 | * Ethernet controller base address. | |
257 | */ | |
258 | void __iomem *base; | |
259 | ||
260 | /* | |
261 | * Points at the right SMI instance to use. | |
262 | */ | |
263 | struct mv643xx_eth_shared_private *smi; | |
264 | ||
265 | /* | |
266 | * Provides access to local SMI interface. | |
267 | */ | |
268 | struct mii_bus *smi_bus; | |
269 | ||
270 | /* | |
271 | * If we have access to the error interrupt pin (which is | |
272 | * somewhat misnamed as it not only reflects internal errors | |
273 | * but also reflects SMI completion), use that to wait for | |
274 | * SMI access completion instead of polling the SMI busy bit. | |
275 | */ | |
276 | int err_interrupt; | |
277 | wait_queue_head_t smi_busy_wait; | |
278 | ||
279 | /* | |
280 | * Per-port MBUS window access register value. | |
281 | */ | |
282 | u32 win_protect; | |
283 | ||
284 | /* | |
285 | * Hardware-specific parameters. | |
286 | */ | |
287 | unsigned int t_clk; | |
288 | int extended_rx_coal_limit; | |
289 | int tx_bw_control; | |
290 | }; | |
291 | ||
292 | #define TX_BW_CONTROL_ABSENT 0 | |
293 | #define TX_BW_CONTROL_OLD_LAYOUT 1 | |
294 | #define TX_BW_CONTROL_NEW_LAYOUT 2 | |
295 | ||
296 | static int mv643xx_eth_open(struct net_device *dev); | |
297 | static int mv643xx_eth_stop(struct net_device *dev); | |
298 | ||
299 | ||
300 | /* per-port *****************************************************************/ | |
301 | struct mib_counters { | |
302 | u64 good_octets_received; | |
303 | u32 bad_octets_received; | |
304 | u32 internal_mac_transmit_err; | |
305 | u32 good_frames_received; | |
306 | u32 bad_frames_received; | |
307 | u32 broadcast_frames_received; | |
308 | u32 multicast_frames_received; | |
309 | u32 frames_64_octets; | |
310 | u32 frames_65_to_127_octets; | |
311 | u32 frames_128_to_255_octets; | |
312 | u32 frames_256_to_511_octets; | |
313 | u32 frames_512_to_1023_octets; | |
314 | u32 frames_1024_to_max_octets; | |
315 | u64 good_octets_sent; | |
316 | u32 good_frames_sent; | |
317 | u32 excessive_collision; | |
318 | u32 multicast_frames_sent; | |
319 | u32 broadcast_frames_sent; | |
320 | u32 unrec_mac_control_received; | |
321 | u32 fc_sent; | |
322 | u32 good_fc_received; | |
323 | u32 bad_fc_received; | |
324 | u32 undersize_received; | |
325 | u32 fragments_received; | |
326 | u32 oversize_received; | |
327 | u32 jabber_received; | |
328 | u32 mac_receive_error; | |
329 | u32 bad_crc_event; | |
330 | u32 collision; | |
331 | u32 late_collision; | |
332 | }; | |
333 | ||
334 | struct lro_counters { | |
335 | u32 lro_aggregated; | |
336 | u32 lro_flushed; | |
337 | u32 lro_no_desc; | |
338 | }; | |
339 | ||
340 | struct rx_queue { | |
341 | int index; | |
342 | ||
343 | int rx_ring_size; | |
344 | ||
345 | int rx_desc_count; | |
346 | int rx_curr_desc; | |
347 | int rx_used_desc; | |
348 | ||
349 | struct rx_desc *rx_desc_area; | |
350 | dma_addr_t rx_desc_dma; | |
351 | int rx_desc_area_size; | |
352 | struct sk_buff **rx_skb; | |
353 | ||
354 | struct net_lro_mgr lro_mgr; | |
355 | struct net_lro_desc lro_arr[8]; | |
356 | }; | |
357 | ||
358 | struct tx_queue { | |
359 | int index; | |
360 | ||
361 | int tx_ring_size; | |
362 | ||
363 | int tx_desc_count; | |
364 | int tx_curr_desc; | |
365 | int tx_used_desc; | |
366 | ||
367 | struct tx_desc *tx_desc_area; | |
368 | dma_addr_t tx_desc_dma; | |
369 | int tx_desc_area_size; | |
370 | ||
371 | struct sk_buff_head tx_skb; | |
372 | ||
373 | unsigned long tx_packets; | |
374 | unsigned long tx_bytes; | |
375 | unsigned long tx_dropped; | |
376 | }; | |
377 | ||
378 | struct mv643xx_eth_private { | |
379 | struct mv643xx_eth_shared_private *shared; | |
380 | void __iomem *base; | |
381 | int port_num; | |
382 | ||
383 | struct net_device *dev; | |
384 | ||
385 | struct phy_device *phy; | |
386 | ||
387 | struct timer_list mib_counters_timer; | |
388 | spinlock_t mib_counters_lock; | |
389 | struct mib_counters mib_counters; | |
390 | ||
391 | struct lro_counters lro_counters; | |
392 | ||
393 | struct work_struct tx_timeout_task; | |
394 | ||
395 | struct napi_struct napi; | |
396 | u8 work_link; | |
397 | u8 work_tx; | |
398 | u8 work_tx_end; | |
399 | u8 work_rx; | |
400 | u8 work_rx_refill; | |
401 | u8 work_rx_oom; | |
402 | ||
403 | int skb_size; | |
404 | struct sk_buff_head rx_recycle; | |
405 | ||
406 | /* | |
407 | * RX state. | |
408 | */ | |
409 | int rx_ring_size; | |
410 | unsigned long rx_desc_sram_addr; | |
411 | int rx_desc_sram_size; | |
412 | int rxq_count; | |
413 | struct timer_list rx_oom; | |
414 | struct rx_queue rxq[8]; | |
415 | ||
416 | /* | |
417 | * TX state. | |
418 | */ | |
419 | int tx_ring_size; | |
420 | unsigned long tx_desc_sram_addr; | |
421 | int tx_desc_sram_size; | |
422 | int txq_count; | |
423 | struct tx_queue txq[8]; | |
424 | }; | |
425 | ||
426 | ||
427 | /* port register accessors **************************************************/ | |
428 | static inline u32 rdl(struct mv643xx_eth_private *mp, int offset) | |
429 | { | |
430 | return readl(mp->shared->base + offset); | |
431 | } | |
432 | ||
433 | static inline u32 rdlp(struct mv643xx_eth_private *mp, int offset) | |
434 | { | |
435 | return readl(mp->base + offset); | |
436 | } | |
437 | ||
438 | static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data) | |
439 | { | |
440 | writel(data, mp->shared->base + offset); | |
441 | } | |
442 | ||
443 | static inline void wrlp(struct mv643xx_eth_private *mp, int offset, u32 data) | |
444 | { | |
445 | writel(data, mp->base + offset); | |
446 | } | |
447 | ||
448 | ||
449 | /* rxq/txq helper functions *************************************************/ | |
450 | static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq) | |
451 | { | |
452 | return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]); | |
453 | } | |
454 | ||
455 | static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq) | |
456 | { | |
457 | return container_of(txq, struct mv643xx_eth_private, txq[txq->index]); | |
458 | } | |
459 | ||
460 | static void rxq_enable(struct rx_queue *rxq) | |
461 | { | |
462 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); | |
463 | wrlp(mp, RXQ_COMMAND, 1 << rxq->index); | |
464 | } | |
465 | ||
466 | static void rxq_disable(struct rx_queue *rxq) | |
467 | { | |
468 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); | |
469 | u8 mask = 1 << rxq->index; | |
470 | ||
471 | wrlp(mp, RXQ_COMMAND, mask << 8); | |
472 | while (rdlp(mp, RXQ_COMMAND) & mask) | |
473 | udelay(10); | |
474 | } | |
475 | ||
476 | static void txq_reset_hw_ptr(struct tx_queue *txq) | |
477 | { | |
478 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
479 | u32 addr; | |
480 | ||
481 | addr = (u32)txq->tx_desc_dma; | |
482 | addr += txq->tx_curr_desc * sizeof(struct tx_desc); | |
483 | wrlp(mp, TXQ_CURRENT_DESC_PTR(txq->index), addr); | |
484 | } | |
485 | ||
486 | static void txq_enable(struct tx_queue *txq) | |
487 | { | |
488 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
489 | wrlp(mp, TXQ_COMMAND, 1 << txq->index); | |
490 | } | |
491 | ||
492 | static void txq_disable(struct tx_queue *txq) | |
493 | { | |
494 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
495 | u8 mask = 1 << txq->index; | |
496 | ||
497 | wrlp(mp, TXQ_COMMAND, mask << 8); | |
498 | while (rdlp(mp, TXQ_COMMAND) & mask) | |
499 | udelay(10); | |
500 | } | |
501 | ||
502 | static void txq_maybe_wake(struct tx_queue *txq) | |
503 | { | |
504 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
505 | struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index); | |
506 | ||
507 | if (netif_tx_queue_stopped(nq)) { | |
508 | __netif_tx_lock(nq, smp_processor_id()); | |
509 | if (txq->tx_ring_size - txq->tx_desc_count >= MAX_SKB_FRAGS + 1) | |
510 | netif_tx_wake_queue(nq); | |
511 | __netif_tx_unlock(nq); | |
512 | } | |
513 | } | |
514 | ||
515 | ||
516 | /* rx napi ******************************************************************/ | |
517 | static int | |
518 | mv643xx_get_skb_header(struct sk_buff *skb, void **iphdr, void **tcph, | |
519 | u64 *hdr_flags, void *priv) | |
520 | { | |
521 | unsigned long cmd_sts = (unsigned long)priv; | |
522 | ||
523 | /* | |
524 | * Make sure that this packet is Ethernet II, is not VLAN | |
525 | * tagged, is IPv4, has a valid IP header, and is TCP. | |
526 | */ | |
527 | if ((cmd_sts & (RX_IP_HDR_OK | RX_PKT_IS_IPV4 | | |
528 | RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_MASK | | |
529 | RX_PKT_IS_VLAN_TAGGED)) != | |
530 | (RX_IP_HDR_OK | RX_PKT_IS_IPV4 | | |
531 | RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_TCP_IPV4)) | |
532 | return -1; | |
533 | ||
534 | skb_reset_network_header(skb); | |
535 | skb_set_transport_header(skb, ip_hdrlen(skb)); | |
536 | *iphdr = ip_hdr(skb); | |
537 | *tcph = tcp_hdr(skb); | |
538 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
543 | static int rxq_process(struct rx_queue *rxq, int budget) | |
544 | { | |
545 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); | |
546 | struct net_device_stats *stats = &mp->dev->stats; | |
547 | int lro_flush_needed; | |
548 | int rx; | |
549 | ||
550 | lro_flush_needed = 0; | |
551 | rx = 0; | |
552 | while (rx < budget && rxq->rx_desc_count) { | |
553 | struct rx_desc *rx_desc; | |
554 | unsigned int cmd_sts; | |
555 | struct sk_buff *skb; | |
556 | u16 byte_cnt; | |
557 | ||
558 | rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc]; | |
559 | ||
560 | cmd_sts = rx_desc->cmd_sts; | |
561 | if (cmd_sts & BUFFER_OWNED_BY_DMA) | |
562 | break; | |
563 | rmb(); | |
564 | ||
565 | skb = rxq->rx_skb[rxq->rx_curr_desc]; | |
566 | rxq->rx_skb[rxq->rx_curr_desc] = NULL; | |
567 | ||
568 | rxq->rx_curr_desc++; | |
569 | if (rxq->rx_curr_desc == rxq->rx_ring_size) | |
570 | rxq->rx_curr_desc = 0; | |
571 | ||
572 | dma_unmap_single(NULL, rx_desc->buf_ptr, | |
573 | rx_desc->buf_size, DMA_FROM_DEVICE); | |
574 | rxq->rx_desc_count--; | |
575 | rx++; | |
576 | ||
577 | mp->work_rx_refill |= 1 << rxq->index; | |
578 | ||
579 | byte_cnt = rx_desc->byte_cnt; | |
580 | ||
581 | /* | |
582 | * Update statistics. | |
583 | * | |
584 | * Note that the descriptor byte count includes 2 dummy | |
585 | * bytes automatically inserted by the hardware at the | |
586 | * start of the packet (which we don't count), and a 4 | |
587 | * byte CRC at the end of the packet (which we do count). | |
588 | */ | |
589 | stats->rx_packets++; | |
590 | stats->rx_bytes += byte_cnt - 2; | |
591 | ||
592 | /* | |
593 | * In case we received a packet without first / last bits | |
594 | * on, or the error summary bit is set, the packet needs | |
595 | * to be dropped. | |
596 | */ | |
597 | if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC | ERROR_SUMMARY)) | |
598 | != (RX_FIRST_DESC | RX_LAST_DESC)) | |
599 | goto err; | |
600 | ||
601 | /* | |
602 | * The -4 is for the CRC in the trailer of the | |
603 | * received packet | |
604 | */ | |
605 | skb_put(skb, byte_cnt - 2 - 4); | |
606 | ||
607 | if (cmd_sts & LAYER_4_CHECKSUM_OK) | |
608 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
609 | skb->protocol = eth_type_trans(skb, mp->dev); | |
610 | ||
611 | if (skb->dev->features & NETIF_F_LRO && | |
612 | skb->ip_summed == CHECKSUM_UNNECESSARY) { | |
613 | lro_receive_skb(&rxq->lro_mgr, skb, (void *)cmd_sts); | |
614 | lro_flush_needed = 1; | |
615 | } else | |
616 | netif_receive_skb(skb); | |
617 | ||
618 | continue; | |
619 | ||
620 | err: | |
621 | stats->rx_dropped++; | |
622 | ||
623 | if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != | |
624 | (RX_FIRST_DESC | RX_LAST_DESC)) { | |
625 | if (net_ratelimit()) | |
626 | dev_printk(KERN_ERR, &mp->dev->dev, | |
627 | "received packet spanning " | |
628 | "multiple descriptors\n"); | |
629 | } | |
630 | ||
631 | if (cmd_sts & ERROR_SUMMARY) | |
632 | stats->rx_errors++; | |
633 | ||
634 | dev_kfree_skb(skb); | |
635 | } | |
636 | ||
637 | if (lro_flush_needed) | |
638 | lro_flush_all(&rxq->lro_mgr); | |
639 | ||
640 | if (rx < budget) | |
641 | mp->work_rx &= ~(1 << rxq->index); | |
642 | ||
643 | return rx; | |
644 | } | |
645 | ||
646 | static int rxq_refill(struct rx_queue *rxq, int budget) | |
647 | { | |
648 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); | |
649 | int refilled; | |
650 | ||
651 | refilled = 0; | |
652 | while (refilled < budget && rxq->rx_desc_count < rxq->rx_ring_size) { | |
653 | struct sk_buff *skb; | |
654 | int unaligned; | |
655 | int rx; | |
656 | struct rx_desc *rx_desc; | |
657 | ||
658 | skb = __skb_dequeue(&mp->rx_recycle); | |
659 | if (skb == NULL) | |
660 | skb = dev_alloc_skb(mp->skb_size + | |
661 | dma_get_cache_alignment() - 1); | |
662 | ||
663 | if (skb == NULL) { | |
664 | mp->work_rx_oom |= 1 << rxq->index; | |
665 | goto oom; | |
666 | } | |
667 | ||
668 | unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); | |
669 | if (unaligned) | |
670 | skb_reserve(skb, dma_get_cache_alignment() - unaligned); | |
671 | ||
672 | refilled++; | |
673 | rxq->rx_desc_count++; | |
674 | ||
675 | rx = rxq->rx_used_desc++; | |
676 | if (rxq->rx_used_desc == rxq->rx_ring_size) | |
677 | rxq->rx_used_desc = 0; | |
678 | ||
679 | rx_desc = rxq->rx_desc_area + rx; | |
680 | ||
681 | rx_desc->buf_ptr = dma_map_single(NULL, skb->data, | |
682 | mp->skb_size, DMA_FROM_DEVICE); | |
683 | rx_desc->buf_size = mp->skb_size; | |
684 | rxq->rx_skb[rx] = skb; | |
685 | wmb(); | |
686 | rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT; | |
687 | wmb(); | |
688 | ||
689 | /* | |
690 | * The hardware automatically prepends 2 bytes of | |
691 | * dummy data to each received packet, so that the | |
692 | * IP header ends up 16-byte aligned. | |
693 | */ | |
694 | skb_reserve(skb, 2); | |
695 | } | |
696 | ||
697 | if (refilled < budget) | |
698 | mp->work_rx_refill &= ~(1 << rxq->index); | |
699 | ||
700 | oom: | |
701 | return refilled; | |
702 | } | |
703 | ||
704 | ||
705 | /* tx ***********************************************************************/ | |
706 | static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) | |
707 | { | |
708 | int frag; | |
709 | ||
710 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { | |
711 | skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag]; | |
712 | if (fragp->size <= 8 && fragp->page_offset & 7) | |
713 | return 1; | |
714 | } | |
715 | ||
716 | return 0; | |
717 | } | |
718 | ||
719 | static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) | |
720 | { | |
721 | int nr_frags = skb_shinfo(skb)->nr_frags; | |
722 | int frag; | |
723 | ||
724 | for (frag = 0; frag < nr_frags; frag++) { | |
725 | skb_frag_t *this_frag; | |
726 | int tx_index; | |
727 | struct tx_desc *desc; | |
728 | ||
729 | this_frag = &skb_shinfo(skb)->frags[frag]; | |
730 | tx_index = txq->tx_curr_desc++; | |
731 | if (txq->tx_curr_desc == txq->tx_ring_size) | |
732 | txq->tx_curr_desc = 0; | |
733 | desc = &txq->tx_desc_area[tx_index]; | |
734 | ||
735 | /* | |
736 | * The last fragment will generate an interrupt | |
737 | * which will free the skb on TX completion. | |
738 | */ | |
739 | if (frag == nr_frags - 1) { | |
740 | desc->cmd_sts = BUFFER_OWNED_BY_DMA | | |
741 | ZERO_PADDING | TX_LAST_DESC | | |
742 | TX_ENABLE_INTERRUPT; | |
743 | } else { | |
744 | desc->cmd_sts = BUFFER_OWNED_BY_DMA; | |
745 | } | |
746 | ||
747 | desc->l4i_chk = 0; | |
748 | desc->byte_cnt = this_frag->size; | |
749 | desc->buf_ptr = dma_map_page(NULL, this_frag->page, | |
750 | this_frag->page_offset, | |
751 | this_frag->size, | |
752 | DMA_TO_DEVICE); | |
753 | } | |
754 | } | |
755 | ||
756 | static inline __be16 sum16_as_be(__sum16 sum) | |
757 | { | |
758 | return (__force __be16)sum; | |
759 | } | |
760 | ||
761 | static int txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb) | |
762 | { | |
763 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
764 | int nr_frags = skb_shinfo(skb)->nr_frags; | |
765 | int tx_index; | |
766 | struct tx_desc *desc; | |
767 | u32 cmd_sts; | |
768 | u16 l4i_chk; | |
769 | int length; | |
770 | ||
771 | cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA; | |
772 | l4i_chk = 0; | |
773 | ||
774 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
775 | int tag_bytes; | |
776 | ||
777 | BUG_ON(skb->protocol != htons(ETH_P_IP) && | |
778 | skb->protocol != htons(ETH_P_8021Q)); | |
779 | ||
780 | tag_bytes = (void *)ip_hdr(skb) - (void *)skb->data - ETH_HLEN; | |
781 | if (unlikely(tag_bytes & ~12)) { | |
782 | if (skb_checksum_help(skb) == 0) | |
783 | goto no_csum; | |
784 | kfree_skb(skb); | |
785 | return 1; | |
786 | } | |
787 | ||
788 | if (tag_bytes & 4) | |
789 | cmd_sts |= MAC_HDR_EXTRA_4_BYTES; | |
790 | if (tag_bytes & 8) | |
791 | cmd_sts |= MAC_HDR_EXTRA_8_BYTES; | |
792 | ||
793 | cmd_sts |= GEN_TCP_UDP_CHECKSUM | | |
794 | GEN_IP_V4_CHECKSUM | | |
795 | ip_hdr(skb)->ihl << TX_IHL_SHIFT; | |
796 | ||
797 | switch (ip_hdr(skb)->protocol) { | |
798 | case IPPROTO_UDP: | |
799 | cmd_sts |= UDP_FRAME; | |
800 | l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); | |
801 | break; | |
802 | case IPPROTO_TCP: | |
803 | l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); | |
804 | break; | |
805 | default: | |
806 | BUG(); | |
807 | } | |
808 | } else { | |
809 | no_csum: | |
810 | /* Errata BTS #50, IHL must be 5 if no HW checksum */ | |
811 | cmd_sts |= 5 << TX_IHL_SHIFT; | |
812 | } | |
813 | ||
814 | tx_index = txq->tx_curr_desc++; | |
815 | if (txq->tx_curr_desc == txq->tx_ring_size) | |
816 | txq->tx_curr_desc = 0; | |
817 | desc = &txq->tx_desc_area[tx_index]; | |
818 | ||
819 | if (nr_frags) { | |
820 | txq_submit_frag_skb(txq, skb); | |
821 | length = skb_headlen(skb); | |
822 | } else { | |
823 | cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT; | |
824 | length = skb->len; | |
825 | } | |
826 | ||
827 | desc->l4i_chk = l4i_chk; | |
828 | desc->byte_cnt = length; | |
829 | desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE); | |
830 | ||
831 | __skb_queue_tail(&txq->tx_skb, skb); | |
832 | ||
833 | /* ensure all other descriptors are written before first cmd_sts */ | |
834 | wmb(); | |
835 | desc->cmd_sts = cmd_sts; | |
836 | ||
837 | /* clear TX_END status */ | |
838 | mp->work_tx_end &= ~(1 << txq->index); | |
839 | ||
840 | /* ensure all descriptors are written before poking hardware */ | |
841 | wmb(); | |
842 | txq_enable(txq); | |
843 | ||
844 | txq->tx_desc_count += nr_frags + 1; | |
845 | ||
846 | return 0; | |
847 | } | |
848 | ||
849 | static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev) | |
850 | { | |
851 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
852 | int queue; | |
853 | struct tx_queue *txq; | |
854 | struct netdev_queue *nq; | |
855 | ||
856 | queue = skb_get_queue_mapping(skb); | |
857 | txq = mp->txq + queue; | |
858 | nq = netdev_get_tx_queue(dev, queue); | |
859 | ||
860 | if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { | |
861 | txq->tx_dropped++; | |
862 | dev_printk(KERN_DEBUG, &dev->dev, | |
863 | "failed to linearize skb with tiny " | |
864 | "unaligned fragment\n"); | |
865 | return NETDEV_TX_BUSY; | |
866 | } | |
867 | ||
868 | if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) { | |
869 | if (net_ratelimit()) | |
870 | dev_printk(KERN_ERR, &dev->dev, "tx queue full?!\n"); | |
871 | kfree_skb(skb); | |
872 | return NETDEV_TX_OK; | |
873 | } | |
874 | ||
875 | if (!txq_submit_skb(txq, skb)) { | |
876 | int entries_left; | |
877 | ||
878 | txq->tx_bytes += skb->len; | |
879 | txq->tx_packets++; | |
880 | dev->trans_start = jiffies; | |
881 | ||
882 | entries_left = txq->tx_ring_size - txq->tx_desc_count; | |
883 | if (entries_left < MAX_SKB_FRAGS + 1) | |
884 | netif_tx_stop_queue(nq); | |
885 | } | |
886 | ||
887 | return NETDEV_TX_OK; | |
888 | } | |
889 | ||
890 | ||
891 | /* tx napi ******************************************************************/ | |
892 | static void txq_kick(struct tx_queue *txq) | |
893 | { | |
894 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
895 | struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index); | |
896 | u32 hw_desc_ptr; | |
897 | u32 expected_ptr; | |
898 | ||
899 | __netif_tx_lock(nq, smp_processor_id()); | |
900 | ||
901 | if (rdlp(mp, TXQ_COMMAND) & (1 << txq->index)) | |
902 | goto out; | |
903 | ||
904 | hw_desc_ptr = rdlp(mp, TXQ_CURRENT_DESC_PTR(txq->index)); | |
905 | expected_ptr = (u32)txq->tx_desc_dma + | |
906 | txq->tx_curr_desc * sizeof(struct tx_desc); | |
907 | ||
908 | if (hw_desc_ptr != expected_ptr) | |
909 | txq_enable(txq); | |
910 | ||
911 | out: | |
912 | __netif_tx_unlock(nq); | |
913 | ||
914 | mp->work_tx_end &= ~(1 << txq->index); | |
915 | } | |
916 | ||
917 | static int txq_reclaim(struct tx_queue *txq, int budget, int force) | |
918 | { | |
919 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
920 | struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index); | |
921 | int reclaimed; | |
922 | ||
923 | __netif_tx_lock(nq, smp_processor_id()); | |
924 | ||
925 | reclaimed = 0; | |
926 | while (reclaimed < budget && txq->tx_desc_count > 0) { | |
927 | int tx_index; | |
928 | struct tx_desc *desc; | |
929 | u32 cmd_sts; | |
930 | struct sk_buff *skb; | |
931 | ||
932 | tx_index = txq->tx_used_desc; | |
933 | desc = &txq->tx_desc_area[tx_index]; | |
934 | cmd_sts = desc->cmd_sts; | |
935 | ||
936 | if (cmd_sts & BUFFER_OWNED_BY_DMA) { | |
937 | if (!force) | |
938 | break; | |
939 | desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA; | |
940 | } | |
941 | ||
942 | txq->tx_used_desc = tx_index + 1; | |
943 | if (txq->tx_used_desc == txq->tx_ring_size) | |
944 | txq->tx_used_desc = 0; | |
945 | ||
946 | reclaimed++; | |
947 | txq->tx_desc_count--; | |
948 | ||
949 | skb = NULL; | |
950 | if (cmd_sts & TX_LAST_DESC) | |
951 | skb = __skb_dequeue(&txq->tx_skb); | |
952 | ||
953 | if (cmd_sts & ERROR_SUMMARY) { | |
954 | dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n"); | |
955 | mp->dev->stats.tx_errors++; | |
956 | } | |
957 | ||
958 | if (cmd_sts & TX_FIRST_DESC) { | |
959 | dma_unmap_single(NULL, desc->buf_ptr, | |
960 | desc->byte_cnt, DMA_TO_DEVICE); | |
961 | } else { | |
962 | dma_unmap_page(NULL, desc->buf_ptr, | |
963 | desc->byte_cnt, DMA_TO_DEVICE); | |
964 | } | |
965 | ||
966 | if (skb != NULL) { | |
967 | if (skb_queue_len(&mp->rx_recycle) < | |
968 | mp->rx_ring_size && | |
969 | skb_recycle_check(skb, mp->skb_size + | |
970 | dma_get_cache_alignment() - 1)) | |
971 | __skb_queue_head(&mp->rx_recycle, skb); | |
972 | else | |
973 | dev_kfree_skb(skb); | |
974 | } | |
975 | } | |
976 | ||
977 | __netif_tx_unlock(nq); | |
978 | ||
979 | if (reclaimed < budget) | |
980 | mp->work_tx &= ~(1 << txq->index); | |
981 | ||
982 | return reclaimed; | |
983 | } | |
984 | ||
985 | ||
986 | /* tx rate control **********************************************************/ | |
987 | /* | |
988 | * Set total maximum TX rate (shared by all TX queues for this port) | |
989 | * to 'rate' bits per second, with a maximum burst of 'burst' bytes. | |
990 | */ | |
991 | static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst) | |
992 | { | |
993 | int token_rate; | |
994 | int mtu; | |
995 | int bucket_size; | |
996 | ||
997 | token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); | |
998 | if (token_rate > 1023) | |
999 | token_rate = 1023; | |
1000 | ||
1001 | mtu = (mp->dev->mtu + 255) >> 8; | |
1002 | if (mtu > 63) | |
1003 | mtu = 63; | |
1004 | ||
1005 | bucket_size = (burst + 255) >> 8; | |
1006 | if (bucket_size > 65535) | |
1007 | bucket_size = 65535; | |
1008 | ||
1009 | switch (mp->shared->tx_bw_control) { | |
1010 | case TX_BW_CONTROL_OLD_LAYOUT: | |
1011 | wrlp(mp, TX_BW_RATE, token_rate); | |
1012 | wrlp(mp, TX_BW_MTU, mtu); | |
1013 | wrlp(mp, TX_BW_BURST, bucket_size); | |
1014 | break; | |
1015 | case TX_BW_CONTROL_NEW_LAYOUT: | |
1016 | wrlp(mp, TX_BW_RATE_MOVED, token_rate); | |
1017 | wrlp(mp, TX_BW_MTU_MOVED, mtu); | |
1018 | wrlp(mp, TX_BW_BURST_MOVED, bucket_size); | |
1019 | break; | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | static void txq_set_rate(struct tx_queue *txq, int rate, int burst) | |
1024 | { | |
1025 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
1026 | int token_rate; | |
1027 | int bucket_size; | |
1028 | ||
1029 | token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); | |
1030 | if (token_rate > 1023) | |
1031 | token_rate = 1023; | |
1032 | ||
1033 | bucket_size = (burst + 255) >> 8; | |
1034 | if (bucket_size > 65535) | |
1035 | bucket_size = 65535; | |
1036 | ||
1037 | wrlp(mp, TXQ_BW_TOKENS(txq->index), token_rate << 14); | |
1038 | wrlp(mp, TXQ_BW_CONF(txq->index), (bucket_size << 10) | token_rate); | |
1039 | } | |
1040 | ||
1041 | static void txq_set_fixed_prio_mode(struct tx_queue *txq) | |
1042 | { | |
1043 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
1044 | int off; | |
1045 | u32 val; | |
1046 | ||
1047 | /* | |
1048 | * Turn on fixed priority mode. | |
1049 | */ | |
1050 | off = 0; | |
1051 | switch (mp->shared->tx_bw_control) { | |
1052 | case TX_BW_CONTROL_OLD_LAYOUT: | |
1053 | off = TXQ_FIX_PRIO_CONF; | |
1054 | break; | |
1055 | case TX_BW_CONTROL_NEW_LAYOUT: | |
1056 | off = TXQ_FIX_PRIO_CONF_MOVED; | |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | if (off) { | |
1061 | val = rdlp(mp, off); | |
1062 | val |= 1 << txq->index; | |
1063 | wrlp(mp, off, val); | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | static void txq_set_wrr(struct tx_queue *txq, int weight) | |
1068 | { | |
1069 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
1070 | int off; | |
1071 | u32 val; | |
1072 | ||
1073 | /* | |
1074 | * Turn off fixed priority mode. | |
1075 | */ | |
1076 | off = 0; | |
1077 | switch (mp->shared->tx_bw_control) { | |
1078 | case TX_BW_CONTROL_OLD_LAYOUT: | |
1079 | off = TXQ_FIX_PRIO_CONF; | |
1080 | break; | |
1081 | case TX_BW_CONTROL_NEW_LAYOUT: | |
1082 | off = TXQ_FIX_PRIO_CONF_MOVED; | |
1083 | break; | |
1084 | } | |
1085 | ||
1086 | if (off) { | |
1087 | val = rdlp(mp, off); | |
1088 | val &= ~(1 << txq->index); | |
1089 | wrlp(mp, off, val); | |
1090 | ||
1091 | /* | |
1092 | * Configure WRR weight for this queue. | |
1093 | */ | |
1094 | ||
1095 | val = rdlp(mp, off); | |
1096 | val = (val & ~0xff) | (weight & 0xff); | |
1097 | wrlp(mp, TXQ_BW_WRR_CONF(txq->index), val); | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | ||
1102 | /* mii management interface *************************************************/ | |
1103 | static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id) | |
1104 | { | |
1105 | struct mv643xx_eth_shared_private *msp = dev_id; | |
1106 | ||
1107 | if (readl(msp->base + ERR_INT_CAUSE) & ERR_INT_SMI_DONE) { | |
1108 | writel(~ERR_INT_SMI_DONE, msp->base + ERR_INT_CAUSE); | |
1109 | wake_up(&msp->smi_busy_wait); | |
1110 | return IRQ_HANDLED; | |
1111 | } | |
1112 | ||
1113 | return IRQ_NONE; | |
1114 | } | |
1115 | ||
1116 | static int smi_is_done(struct mv643xx_eth_shared_private *msp) | |
1117 | { | |
1118 | return !(readl(msp->base + SMI_REG) & SMI_BUSY); | |
1119 | } | |
1120 | ||
1121 | static int smi_wait_ready(struct mv643xx_eth_shared_private *msp) | |
1122 | { | |
1123 | if (msp->err_interrupt == NO_IRQ) { | |
1124 | int i; | |
1125 | ||
1126 | for (i = 0; !smi_is_done(msp); i++) { | |
1127 | if (i == 10) | |
1128 | return -ETIMEDOUT; | |
1129 | msleep(10); | |
1130 | } | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | if (!smi_is_done(msp)) { | |
1136 | wait_event_timeout(msp->smi_busy_wait, smi_is_done(msp), | |
1137 | msecs_to_jiffies(100)); | |
1138 | if (!smi_is_done(msp)) | |
1139 | return -ETIMEDOUT; | |
1140 | } | |
1141 | ||
1142 | return 0; | |
1143 | } | |
1144 | ||
1145 | static int smi_bus_read(struct mii_bus *bus, int addr, int reg) | |
1146 | { | |
1147 | struct mv643xx_eth_shared_private *msp = bus->priv; | |
1148 | void __iomem *smi_reg = msp->base + SMI_REG; | |
1149 | int ret; | |
1150 | ||
1151 | if (smi_wait_ready(msp)) { | |
1152 | printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n"); | |
1153 | return -ETIMEDOUT; | |
1154 | } | |
1155 | ||
1156 | writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg); | |
1157 | ||
1158 | if (smi_wait_ready(msp)) { | |
1159 | printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n"); | |
1160 | return -ETIMEDOUT; | |
1161 | } | |
1162 | ||
1163 | ret = readl(smi_reg); | |
1164 | if (!(ret & SMI_READ_VALID)) { | |
1165 | printk(KERN_WARNING "mv643xx_eth: SMI bus read not valid\n"); | |
1166 | return -ENODEV; | |
1167 | } | |
1168 | ||
1169 | return ret & 0xffff; | |
1170 | } | |
1171 | ||
1172 | static int smi_bus_write(struct mii_bus *bus, int addr, int reg, u16 val) | |
1173 | { | |
1174 | struct mv643xx_eth_shared_private *msp = bus->priv; | |
1175 | void __iomem *smi_reg = msp->base + SMI_REG; | |
1176 | ||
1177 | if (smi_wait_ready(msp)) { | |
1178 | printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n"); | |
1179 | return -ETIMEDOUT; | |
1180 | } | |
1181 | ||
1182 | writel(SMI_OPCODE_WRITE | (reg << 21) | | |
1183 | (addr << 16) | (val & 0xffff), smi_reg); | |
1184 | ||
1185 | if (smi_wait_ready(msp)) { | |
1186 | printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n"); | |
1187 | return -ETIMEDOUT; | |
1188 | } | |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | ||
1194 | /* statistics ***************************************************************/ | |
1195 | static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev) | |
1196 | { | |
1197 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1198 | struct net_device_stats *stats = &dev->stats; | |
1199 | unsigned long tx_packets = 0; | |
1200 | unsigned long tx_bytes = 0; | |
1201 | unsigned long tx_dropped = 0; | |
1202 | int i; | |
1203 | ||
1204 | for (i = 0; i < mp->txq_count; i++) { | |
1205 | struct tx_queue *txq = mp->txq + i; | |
1206 | ||
1207 | tx_packets += txq->tx_packets; | |
1208 | tx_bytes += txq->tx_bytes; | |
1209 | tx_dropped += txq->tx_dropped; | |
1210 | } | |
1211 | ||
1212 | stats->tx_packets = tx_packets; | |
1213 | stats->tx_bytes = tx_bytes; | |
1214 | stats->tx_dropped = tx_dropped; | |
1215 | ||
1216 | return stats; | |
1217 | } | |
1218 | ||
1219 | static void mv643xx_eth_grab_lro_stats(struct mv643xx_eth_private *mp) | |
1220 | { | |
1221 | u32 lro_aggregated = 0; | |
1222 | u32 lro_flushed = 0; | |
1223 | u32 lro_no_desc = 0; | |
1224 | int i; | |
1225 | ||
1226 | for (i = 0; i < mp->rxq_count; i++) { | |
1227 | struct rx_queue *rxq = mp->rxq + i; | |
1228 | ||
1229 | lro_aggregated += rxq->lro_mgr.stats.aggregated; | |
1230 | lro_flushed += rxq->lro_mgr.stats.flushed; | |
1231 | lro_no_desc += rxq->lro_mgr.stats.no_desc; | |
1232 | } | |
1233 | ||
1234 | mp->lro_counters.lro_aggregated = lro_aggregated; | |
1235 | mp->lro_counters.lro_flushed = lro_flushed; | |
1236 | mp->lro_counters.lro_no_desc = lro_no_desc; | |
1237 | } | |
1238 | ||
1239 | static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset) | |
1240 | { | |
1241 | return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); | |
1242 | } | |
1243 | ||
1244 | static void mib_counters_clear(struct mv643xx_eth_private *mp) | |
1245 | { | |
1246 | int i; | |
1247 | ||
1248 | for (i = 0; i < 0x80; i += 4) | |
1249 | mib_read(mp, i); | |
1250 | } | |
1251 | ||
1252 | static void mib_counters_update(struct mv643xx_eth_private *mp) | |
1253 | { | |
1254 | struct mib_counters *p = &mp->mib_counters; | |
1255 | ||
1256 | spin_lock_bh(&mp->mib_counters_lock); | |
1257 | p->good_octets_received += mib_read(mp, 0x00); | |
1258 | p->good_octets_received += (u64)mib_read(mp, 0x04) << 32; | |
1259 | p->bad_octets_received += mib_read(mp, 0x08); | |
1260 | p->internal_mac_transmit_err += mib_read(mp, 0x0c); | |
1261 | p->good_frames_received += mib_read(mp, 0x10); | |
1262 | p->bad_frames_received += mib_read(mp, 0x14); | |
1263 | p->broadcast_frames_received += mib_read(mp, 0x18); | |
1264 | p->multicast_frames_received += mib_read(mp, 0x1c); | |
1265 | p->frames_64_octets += mib_read(mp, 0x20); | |
1266 | p->frames_65_to_127_octets += mib_read(mp, 0x24); | |
1267 | p->frames_128_to_255_octets += mib_read(mp, 0x28); | |
1268 | p->frames_256_to_511_octets += mib_read(mp, 0x2c); | |
1269 | p->frames_512_to_1023_octets += mib_read(mp, 0x30); | |
1270 | p->frames_1024_to_max_octets += mib_read(mp, 0x34); | |
1271 | p->good_octets_sent += mib_read(mp, 0x38); | |
1272 | p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32; | |
1273 | p->good_frames_sent += mib_read(mp, 0x40); | |
1274 | p->excessive_collision += mib_read(mp, 0x44); | |
1275 | p->multicast_frames_sent += mib_read(mp, 0x48); | |
1276 | p->broadcast_frames_sent += mib_read(mp, 0x4c); | |
1277 | p->unrec_mac_control_received += mib_read(mp, 0x50); | |
1278 | p->fc_sent += mib_read(mp, 0x54); | |
1279 | p->good_fc_received += mib_read(mp, 0x58); | |
1280 | p->bad_fc_received += mib_read(mp, 0x5c); | |
1281 | p->undersize_received += mib_read(mp, 0x60); | |
1282 | p->fragments_received += mib_read(mp, 0x64); | |
1283 | p->oversize_received += mib_read(mp, 0x68); | |
1284 | p->jabber_received += mib_read(mp, 0x6c); | |
1285 | p->mac_receive_error += mib_read(mp, 0x70); | |
1286 | p->bad_crc_event += mib_read(mp, 0x74); | |
1287 | p->collision += mib_read(mp, 0x78); | |
1288 | p->late_collision += mib_read(mp, 0x7c); | |
1289 | spin_unlock_bh(&mp->mib_counters_lock); | |
1290 | ||
1291 | mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ); | |
1292 | } | |
1293 | ||
1294 | static void mib_counters_timer_wrapper(unsigned long _mp) | |
1295 | { | |
1296 | struct mv643xx_eth_private *mp = (void *)_mp; | |
1297 | ||
1298 | mib_counters_update(mp); | |
1299 | } | |
1300 | ||
1301 | ||
1302 | /* interrupt coalescing *****************************************************/ | |
1303 | /* | |
1304 | * Hardware coalescing parameters are set in units of 64 t_clk | |
1305 | * cycles. I.e.: | |
1306 | * | |
1307 | * coal_delay_in_usec = 64000000 * register_value / t_clk_rate | |
1308 | * | |
1309 | * register_value = coal_delay_in_usec * t_clk_rate / 64000000 | |
1310 | * | |
1311 | * In the ->set*() methods, we round the computed register value | |
1312 | * to the nearest integer. | |
1313 | */ | |
1314 | static unsigned int get_rx_coal(struct mv643xx_eth_private *mp) | |
1315 | { | |
1316 | u32 val = rdlp(mp, SDMA_CONFIG); | |
1317 | u64 temp; | |
1318 | ||
1319 | if (mp->shared->extended_rx_coal_limit) | |
1320 | temp = ((val & 0x02000000) >> 10) | ((val & 0x003fff80) >> 7); | |
1321 | else | |
1322 | temp = (val & 0x003fff00) >> 8; | |
1323 | ||
1324 | temp *= 64000000; | |
1325 | do_div(temp, mp->shared->t_clk); | |
1326 | ||
1327 | return (unsigned int)temp; | |
1328 | } | |
1329 | ||
1330 | static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int usec) | |
1331 | { | |
1332 | u64 temp; | |
1333 | u32 val; | |
1334 | ||
1335 | temp = (u64)usec * mp->shared->t_clk; | |
1336 | temp += 31999999; | |
1337 | do_div(temp, 64000000); | |
1338 | ||
1339 | val = rdlp(mp, SDMA_CONFIG); | |
1340 | if (mp->shared->extended_rx_coal_limit) { | |
1341 | if (temp > 0xffff) | |
1342 | temp = 0xffff; | |
1343 | val &= ~0x023fff80; | |
1344 | val |= (temp & 0x8000) << 10; | |
1345 | val |= (temp & 0x7fff) << 7; | |
1346 | } else { | |
1347 | if (temp > 0x3fff) | |
1348 | temp = 0x3fff; | |
1349 | val &= ~0x003fff00; | |
1350 | val |= (temp & 0x3fff) << 8; | |
1351 | } | |
1352 | wrlp(mp, SDMA_CONFIG, val); | |
1353 | } | |
1354 | ||
1355 | static unsigned int get_tx_coal(struct mv643xx_eth_private *mp) | |
1356 | { | |
1357 | u64 temp; | |
1358 | ||
1359 | temp = (rdlp(mp, TX_FIFO_URGENT_THRESHOLD) & 0x3fff0) >> 4; | |
1360 | temp *= 64000000; | |
1361 | do_div(temp, mp->shared->t_clk); | |
1362 | ||
1363 | return (unsigned int)temp; | |
1364 | } | |
1365 | ||
1366 | static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int usec) | |
1367 | { | |
1368 | u64 temp; | |
1369 | ||
1370 | temp = (u64)usec * mp->shared->t_clk; | |
1371 | temp += 31999999; | |
1372 | do_div(temp, 64000000); | |
1373 | ||
1374 | if (temp > 0x3fff) | |
1375 | temp = 0x3fff; | |
1376 | ||
1377 | wrlp(mp, TX_FIFO_URGENT_THRESHOLD, temp << 4); | |
1378 | } | |
1379 | ||
1380 | ||
1381 | /* ethtool ******************************************************************/ | |
1382 | struct mv643xx_eth_stats { | |
1383 | char stat_string[ETH_GSTRING_LEN]; | |
1384 | int sizeof_stat; | |
1385 | int netdev_off; | |
1386 | int mp_off; | |
1387 | }; | |
1388 | ||
1389 | #define SSTAT(m) \ | |
1390 | { #m, FIELD_SIZEOF(struct net_device_stats, m), \ | |
1391 | offsetof(struct net_device, stats.m), -1 } | |
1392 | ||
1393 | #define MIBSTAT(m) \ | |
1394 | { #m, FIELD_SIZEOF(struct mib_counters, m), \ | |
1395 | -1, offsetof(struct mv643xx_eth_private, mib_counters.m) } | |
1396 | ||
1397 | #define LROSTAT(m) \ | |
1398 | { #m, FIELD_SIZEOF(struct lro_counters, m), \ | |
1399 | -1, offsetof(struct mv643xx_eth_private, lro_counters.m) } | |
1400 | ||
1401 | static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { | |
1402 | SSTAT(rx_packets), | |
1403 | SSTAT(tx_packets), | |
1404 | SSTAT(rx_bytes), | |
1405 | SSTAT(tx_bytes), | |
1406 | SSTAT(rx_errors), | |
1407 | SSTAT(tx_errors), | |
1408 | SSTAT(rx_dropped), | |
1409 | SSTAT(tx_dropped), | |
1410 | MIBSTAT(good_octets_received), | |
1411 | MIBSTAT(bad_octets_received), | |
1412 | MIBSTAT(internal_mac_transmit_err), | |
1413 | MIBSTAT(good_frames_received), | |
1414 | MIBSTAT(bad_frames_received), | |
1415 | MIBSTAT(broadcast_frames_received), | |
1416 | MIBSTAT(multicast_frames_received), | |
1417 | MIBSTAT(frames_64_octets), | |
1418 | MIBSTAT(frames_65_to_127_octets), | |
1419 | MIBSTAT(frames_128_to_255_octets), | |
1420 | MIBSTAT(frames_256_to_511_octets), | |
1421 | MIBSTAT(frames_512_to_1023_octets), | |
1422 | MIBSTAT(frames_1024_to_max_octets), | |
1423 | MIBSTAT(good_octets_sent), | |
1424 | MIBSTAT(good_frames_sent), | |
1425 | MIBSTAT(excessive_collision), | |
1426 | MIBSTAT(multicast_frames_sent), | |
1427 | MIBSTAT(broadcast_frames_sent), | |
1428 | MIBSTAT(unrec_mac_control_received), | |
1429 | MIBSTAT(fc_sent), | |
1430 | MIBSTAT(good_fc_received), | |
1431 | MIBSTAT(bad_fc_received), | |
1432 | MIBSTAT(undersize_received), | |
1433 | MIBSTAT(fragments_received), | |
1434 | MIBSTAT(oversize_received), | |
1435 | MIBSTAT(jabber_received), | |
1436 | MIBSTAT(mac_receive_error), | |
1437 | MIBSTAT(bad_crc_event), | |
1438 | MIBSTAT(collision), | |
1439 | MIBSTAT(late_collision), | |
1440 | LROSTAT(lro_aggregated), | |
1441 | LROSTAT(lro_flushed), | |
1442 | LROSTAT(lro_no_desc), | |
1443 | }; | |
1444 | ||
1445 | static int | |
1446 | mv643xx_eth_get_settings_phy(struct mv643xx_eth_private *mp, | |
1447 | struct ethtool_cmd *cmd) | |
1448 | { | |
1449 | int err; | |
1450 | ||
1451 | err = phy_read_status(mp->phy); | |
1452 | if (err == 0) | |
1453 | err = phy_ethtool_gset(mp->phy, cmd); | |
1454 | ||
1455 | /* | |
1456 | * The MAC does not support 1000baseT_Half. | |
1457 | */ | |
1458 | cmd->supported &= ~SUPPORTED_1000baseT_Half; | |
1459 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; | |
1460 | ||
1461 | return err; | |
1462 | } | |
1463 | ||
1464 | static int | |
1465 | mv643xx_eth_get_settings_phyless(struct mv643xx_eth_private *mp, | |
1466 | struct ethtool_cmd *cmd) | |
1467 | { | |
1468 | u32 port_status; | |
1469 | ||
1470 | port_status = rdlp(mp, PORT_STATUS); | |
1471 | ||
1472 | cmd->supported = SUPPORTED_MII; | |
1473 | cmd->advertising = ADVERTISED_MII; | |
1474 | switch (port_status & PORT_SPEED_MASK) { | |
1475 | case PORT_SPEED_10: | |
1476 | cmd->speed = SPEED_10; | |
1477 | break; | |
1478 | case PORT_SPEED_100: | |
1479 | cmd->speed = SPEED_100; | |
1480 | break; | |
1481 | case PORT_SPEED_1000: | |
1482 | cmd->speed = SPEED_1000; | |
1483 | break; | |
1484 | default: | |
1485 | cmd->speed = -1; | |
1486 | break; | |
1487 | } | |
1488 | cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF; | |
1489 | cmd->port = PORT_MII; | |
1490 | cmd->phy_address = 0; | |
1491 | cmd->transceiver = XCVR_INTERNAL; | |
1492 | cmd->autoneg = AUTONEG_DISABLE; | |
1493 | cmd->maxtxpkt = 1; | |
1494 | cmd->maxrxpkt = 1; | |
1495 | ||
1496 | return 0; | |
1497 | } | |
1498 | ||
1499 | static int | |
1500 | mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1501 | { | |
1502 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1503 | ||
1504 | if (mp->phy != NULL) | |
1505 | return mv643xx_eth_get_settings_phy(mp, cmd); | |
1506 | else | |
1507 | return mv643xx_eth_get_settings_phyless(mp, cmd); | |
1508 | } | |
1509 | ||
1510 | static int | |
1511 | mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1512 | { | |
1513 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1514 | ||
1515 | if (mp->phy == NULL) | |
1516 | return -EINVAL; | |
1517 | ||
1518 | /* | |
1519 | * The MAC does not support 1000baseT_Half. | |
1520 | */ | |
1521 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; | |
1522 | ||
1523 | return phy_ethtool_sset(mp->phy, cmd); | |
1524 | } | |
1525 | ||
1526 | static void mv643xx_eth_get_drvinfo(struct net_device *dev, | |
1527 | struct ethtool_drvinfo *drvinfo) | |
1528 | { | |
1529 | strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32); | |
1530 | strncpy(drvinfo->version, mv643xx_eth_driver_version, 32); | |
1531 | strncpy(drvinfo->fw_version, "N/A", 32); | |
1532 | strncpy(drvinfo->bus_info, "platform", 32); | |
1533 | drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats); | |
1534 | } | |
1535 | ||
1536 | static int mv643xx_eth_nway_reset(struct net_device *dev) | |
1537 | { | |
1538 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1539 | ||
1540 | if (mp->phy == NULL) | |
1541 | return -EINVAL; | |
1542 | ||
1543 | return genphy_restart_aneg(mp->phy); | |
1544 | } | |
1545 | ||
1546 | static u32 mv643xx_eth_get_link(struct net_device *dev) | |
1547 | { | |
1548 | return !!netif_carrier_ok(dev); | |
1549 | } | |
1550 | ||
1551 | static int | |
1552 | mv643xx_eth_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) | |
1553 | { | |
1554 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1555 | ||
1556 | ec->rx_coalesce_usecs = get_rx_coal(mp); | |
1557 | ec->tx_coalesce_usecs = get_tx_coal(mp); | |
1558 | ||
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | static int | |
1563 | mv643xx_eth_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) | |
1564 | { | |
1565 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1566 | ||
1567 | set_rx_coal(mp, ec->rx_coalesce_usecs); | |
1568 | set_tx_coal(mp, ec->tx_coalesce_usecs); | |
1569 | ||
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | static void | |
1574 | mv643xx_eth_get_ringparam(struct net_device *dev, struct ethtool_ringparam *er) | |
1575 | { | |
1576 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1577 | ||
1578 | er->rx_max_pending = 4096; | |
1579 | er->tx_max_pending = 4096; | |
1580 | er->rx_mini_max_pending = 0; | |
1581 | er->rx_jumbo_max_pending = 0; | |
1582 | ||
1583 | er->rx_pending = mp->rx_ring_size; | |
1584 | er->tx_pending = mp->tx_ring_size; | |
1585 | er->rx_mini_pending = 0; | |
1586 | er->rx_jumbo_pending = 0; | |
1587 | } | |
1588 | ||
1589 | static int | |
1590 | mv643xx_eth_set_ringparam(struct net_device *dev, struct ethtool_ringparam *er) | |
1591 | { | |
1592 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1593 | ||
1594 | if (er->rx_mini_pending || er->rx_jumbo_pending) | |
1595 | return -EINVAL; | |
1596 | ||
1597 | mp->rx_ring_size = er->rx_pending < 4096 ? er->rx_pending : 4096; | |
1598 | mp->tx_ring_size = er->tx_pending < 4096 ? er->tx_pending : 4096; | |
1599 | ||
1600 | if (netif_running(dev)) { | |
1601 | mv643xx_eth_stop(dev); | |
1602 | if (mv643xx_eth_open(dev)) { | |
1603 | dev_printk(KERN_ERR, &dev->dev, | |
1604 | "fatal error on re-opening device after " | |
1605 | "ring param change\n"); | |
1606 | return -ENOMEM; | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | return 0; | |
1611 | } | |
1612 | ||
1613 | static u32 | |
1614 | mv643xx_eth_get_rx_csum(struct net_device *dev) | |
1615 | { | |
1616 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1617 | ||
1618 | return !!(rdlp(mp, PORT_CONFIG) & 0x02000000); | |
1619 | } | |
1620 | ||
1621 | static int | |
1622 | mv643xx_eth_set_rx_csum(struct net_device *dev, u32 rx_csum) | |
1623 | { | |
1624 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1625 | ||
1626 | wrlp(mp, PORT_CONFIG, rx_csum ? 0x02000000 : 0x00000000); | |
1627 | ||
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | static void mv643xx_eth_get_strings(struct net_device *dev, | |
1632 | uint32_t stringset, uint8_t *data) | |
1633 | { | |
1634 | int i; | |
1635 | ||
1636 | if (stringset == ETH_SS_STATS) { | |
1637 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { | |
1638 | memcpy(data + i * ETH_GSTRING_LEN, | |
1639 | mv643xx_eth_stats[i].stat_string, | |
1640 | ETH_GSTRING_LEN); | |
1641 | } | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | static void mv643xx_eth_get_ethtool_stats(struct net_device *dev, | |
1646 | struct ethtool_stats *stats, | |
1647 | uint64_t *data) | |
1648 | { | |
1649 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1650 | int i; | |
1651 | ||
1652 | mv643xx_eth_get_stats(dev); | |
1653 | mib_counters_update(mp); | |
1654 | mv643xx_eth_grab_lro_stats(mp); | |
1655 | ||
1656 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { | |
1657 | const struct mv643xx_eth_stats *stat; | |
1658 | void *p; | |
1659 | ||
1660 | stat = mv643xx_eth_stats + i; | |
1661 | ||
1662 | if (stat->netdev_off >= 0) | |
1663 | p = ((void *)mp->dev) + stat->netdev_off; | |
1664 | else | |
1665 | p = ((void *)mp) + stat->mp_off; | |
1666 | ||
1667 | data[i] = (stat->sizeof_stat == 8) ? | |
1668 | *(uint64_t *)p : *(uint32_t *)p; | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset) | |
1673 | { | |
1674 | if (sset == ETH_SS_STATS) | |
1675 | return ARRAY_SIZE(mv643xx_eth_stats); | |
1676 | ||
1677 | return -EOPNOTSUPP; | |
1678 | } | |
1679 | ||
1680 | static const struct ethtool_ops mv643xx_eth_ethtool_ops = { | |
1681 | .get_settings = mv643xx_eth_get_settings, | |
1682 | .set_settings = mv643xx_eth_set_settings, | |
1683 | .get_drvinfo = mv643xx_eth_get_drvinfo, | |
1684 | .nway_reset = mv643xx_eth_nway_reset, | |
1685 | .get_link = mv643xx_eth_get_link, | |
1686 | .get_coalesce = mv643xx_eth_get_coalesce, | |
1687 | .set_coalesce = mv643xx_eth_set_coalesce, | |
1688 | .get_ringparam = mv643xx_eth_get_ringparam, | |
1689 | .set_ringparam = mv643xx_eth_set_ringparam, | |
1690 | .get_rx_csum = mv643xx_eth_get_rx_csum, | |
1691 | .set_rx_csum = mv643xx_eth_set_rx_csum, | |
1692 | .set_tx_csum = ethtool_op_set_tx_csum, | |
1693 | .set_sg = ethtool_op_set_sg, | |
1694 | .get_strings = mv643xx_eth_get_strings, | |
1695 | .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, | |
1696 | .get_flags = ethtool_op_get_flags, | |
1697 | .set_flags = ethtool_op_set_flags, | |
1698 | .get_sset_count = mv643xx_eth_get_sset_count, | |
1699 | }; | |
1700 | ||
1701 | ||
1702 | /* address handling *********************************************************/ | |
1703 | static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr) | |
1704 | { | |
1705 | unsigned int mac_h = rdlp(mp, MAC_ADDR_HIGH); | |
1706 | unsigned int mac_l = rdlp(mp, MAC_ADDR_LOW); | |
1707 | ||
1708 | addr[0] = (mac_h >> 24) & 0xff; | |
1709 | addr[1] = (mac_h >> 16) & 0xff; | |
1710 | addr[2] = (mac_h >> 8) & 0xff; | |
1711 | addr[3] = mac_h & 0xff; | |
1712 | addr[4] = (mac_l >> 8) & 0xff; | |
1713 | addr[5] = mac_l & 0xff; | |
1714 | } | |
1715 | ||
1716 | static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr) | |
1717 | { | |
1718 | wrlp(mp, MAC_ADDR_HIGH, | |
1719 | (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]); | |
1720 | wrlp(mp, MAC_ADDR_LOW, (addr[4] << 8) | addr[5]); | |
1721 | } | |
1722 | ||
1723 | static u32 uc_addr_filter_mask(struct net_device *dev) | |
1724 | { | |
1725 | struct dev_addr_list *uc_ptr; | |
1726 | u32 nibbles; | |
1727 | ||
1728 | if (dev->flags & IFF_PROMISC) | |
1729 | return 0; | |
1730 | ||
1731 | nibbles = 1 << (dev->dev_addr[5] & 0x0f); | |
1732 | for (uc_ptr = dev->uc_list; uc_ptr != NULL; uc_ptr = uc_ptr->next) { | |
1733 | if (memcmp(dev->dev_addr, uc_ptr->da_addr, 5)) | |
1734 | return 0; | |
1735 | if ((dev->dev_addr[5] ^ uc_ptr->da_addr[5]) & 0xf0) | |
1736 | return 0; | |
1737 | ||
1738 | nibbles |= 1 << (uc_ptr->da_addr[5] & 0x0f); | |
1739 | } | |
1740 | ||
1741 | return nibbles; | |
1742 | } | |
1743 | ||
1744 | static void mv643xx_eth_program_unicast_filter(struct net_device *dev) | |
1745 | { | |
1746 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1747 | u32 port_config; | |
1748 | u32 nibbles; | |
1749 | int i; | |
1750 | ||
1751 | uc_addr_set(mp, dev->dev_addr); | |
1752 | ||
1753 | port_config = rdlp(mp, PORT_CONFIG); | |
1754 | nibbles = uc_addr_filter_mask(dev); | |
1755 | if (!nibbles) { | |
1756 | port_config |= UNICAST_PROMISCUOUS_MODE; | |
1757 | wrlp(mp, PORT_CONFIG, port_config); | |
1758 | return; | |
1759 | } | |
1760 | ||
1761 | for (i = 0; i < 16; i += 4) { | |
1762 | int off = UNICAST_TABLE(mp->port_num) + i; | |
1763 | u32 v; | |
1764 | ||
1765 | v = 0; | |
1766 | if (nibbles & 1) | |
1767 | v |= 0x00000001; | |
1768 | if (nibbles & 2) | |
1769 | v |= 0x00000100; | |
1770 | if (nibbles & 4) | |
1771 | v |= 0x00010000; | |
1772 | if (nibbles & 8) | |
1773 | v |= 0x01000000; | |
1774 | nibbles >>= 4; | |
1775 | ||
1776 | wrl(mp, off, v); | |
1777 | } | |
1778 | ||
1779 | port_config &= ~UNICAST_PROMISCUOUS_MODE; | |
1780 | wrlp(mp, PORT_CONFIG, port_config); | |
1781 | } | |
1782 | ||
1783 | static int addr_crc(unsigned char *addr) | |
1784 | { | |
1785 | int crc = 0; | |
1786 | int i; | |
1787 | ||
1788 | for (i = 0; i < 6; i++) { | |
1789 | int j; | |
1790 | ||
1791 | crc = (crc ^ addr[i]) << 8; | |
1792 | for (j = 7; j >= 0; j--) { | |
1793 | if (crc & (0x100 << j)) | |
1794 | crc ^= 0x107 << j; | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | return crc; | |
1799 | } | |
1800 | ||
1801 | static void mv643xx_eth_program_multicast_filter(struct net_device *dev) | |
1802 | { | |
1803 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1804 | u32 *mc_spec; | |
1805 | u32 *mc_other; | |
1806 | struct dev_addr_list *addr; | |
1807 | int i; | |
1808 | ||
1809 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { | |
1810 | int port_num; | |
1811 | u32 accept; | |
1812 | int i; | |
1813 | ||
1814 | oom: | |
1815 | port_num = mp->port_num; | |
1816 | accept = 0x01010101; | |
1817 | for (i = 0; i < 0x100; i += 4) { | |
1818 | wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept); | |
1819 | wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept); | |
1820 | } | |
1821 | return; | |
1822 | } | |
1823 | ||
1824 | mc_spec = kmalloc(0x200, GFP_ATOMIC); | |
1825 | if (mc_spec == NULL) | |
1826 | goto oom; | |
1827 | mc_other = mc_spec + (0x100 >> 2); | |
1828 | ||
1829 | memset(mc_spec, 0, 0x100); | |
1830 | memset(mc_other, 0, 0x100); | |
1831 | ||
1832 | for (addr = dev->mc_list; addr != NULL; addr = addr->next) { | |
1833 | u8 *a = addr->da_addr; | |
1834 | u32 *table; | |
1835 | int entry; | |
1836 | ||
1837 | if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) { | |
1838 | table = mc_spec; | |
1839 | entry = a[5]; | |
1840 | } else { | |
1841 | table = mc_other; | |
1842 | entry = addr_crc(a); | |
1843 | } | |
1844 | ||
1845 | table[entry >> 2] |= 1 << (8 * (entry & 3)); | |
1846 | } | |
1847 | ||
1848 | for (i = 0; i < 0x100; i += 4) { | |
1849 | wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, mc_spec[i >> 2]); | |
1850 | wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, mc_other[i >> 2]); | |
1851 | } | |
1852 | ||
1853 | kfree(mc_spec); | |
1854 | } | |
1855 | ||
1856 | static void mv643xx_eth_set_rx_mode(struct net_device *dev) | |
1857 | { | |
1858 | mv643xx_eth_program_unicast_filter(dev); | |
1859 | mv643xx_eth_program_multicast_filter(dev); | |
1860 | } | |
1861 | ||
1862 | static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) | |
1863 | { | |
1864 | struct sockaddr *sa = addr; | |
1865 | ||
1866 | memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN); | |
1867 | ||
1868 | netif_addr_lock_bh(dev); | |
1869 | mv643xx_eth_program_unicast_filter(dev); | |
1870 | netif_addr_unlock_bh(dev); | |
1871 | ||
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | ||
1876 | /* rx/tx queue initialisation ***********************************************/ | |
1877 | static int rxq_init(struct mv643xx_eth_private *mp, int index) | |
1878 | { | |
1879 | struct rx_queue *rxq = mp->rxq + index; | |
1880 | struct rx_desc *rx_desc; | |
1881 | int size; | |
1882 | int i; | |
1883 | ||
1884 | rxq->index = index; | |
1885 | ||
1886 | rxq->rx_ring_size = mp->rx_ring_size; | |
1887 | ||
1888 | rxq->rx_desc_count = 0; | |
1889 | rxq->rx_curr_desc = 0; | |
1890 | rxq->rx_used_desc = 0; | |
1891 | ||
1892 | size = rxq->rx_ring_size * sizeof(struct rx_desc); | |
1893 | ||
1894 | if (index == 0 && size <= mp->rx_desc_sram_size) { | |
1895 | rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr, | |
1896 | mp->rx_desc_sram_size); | |
1897 | rxq->rx_desc_dma = mp->rx_desc_sram_addr; | |
1898 | } else { | |
1899 | rxq->rx_desc_area = dma_alloc_coherent(NULL, size, | |
1900 | &rxq->rx_desc_dma, | |
1901 | GFP_KERNEL); | |
1902 | } | |
1903 | ||
1904 | if (rxq->rx_desc_area == NULL) { | |
1905 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1906 | "can't allocate rx ring (%d bytes)\n", size); | |
1907 | goto out; | |
1908 | } | |
1909 | memset(rxq->rx_desc_area, 0, size); | |
1910 | ||
1911 | rxq->rx_desc_area_size = size; | |
1912 | rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb), | |
1913 | GFP_KERNEL); | |
1914 | if (rxq->rx_skb == NULL) { | |
1915 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1916 | "can't allocate rx skb ring\n"); | |
1917 | goto out_free; | |
1918 | } | |
1919 | ||
1920 | rx_desc = (struct rx_desc *)rxq->rx_desc_area; | |
1921 | for (i = 0; i < rxq->rx_ring_size; i++) { | |
1922 | int nexti; | |
1923 | ||
1924 | nexti = i + 1; | |
1925 | if (nexti == rxq->rx_ring_size) | |
1926 | nexti = 0; | |
1927 | ||
1928 | rx_desc[i].next_desc_ptr = rxq->rx_desc_dma + | |
1929 | nexti * sizeof(struct rx_desc); | |
1930 | } | |
1931 | ||
1932 | rxq->lro_mgr.dev = mp->dev; | |
1933 | memset(&rxq->lro_mgr.stats, 0, sizeof(rxq->lro_mgr.stats)); | |
1934 | rxq->lro_mgr.features = LRO_F_NAPI; | |
1935 | rxq->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1936 | rxq->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1937 | rxq->lro_mgr.max_desc = ARRAY_SIZE(rxq->lro_arr); | |
1938 | rxq->lro_mgr.max_aggr = 32; | |
1939 | rxq->lro_mgr.frag_align_pad = 0; | |
1940 | rxq->lro_mgr.lro_arr = rxq->lro_arr; | |
1941 | rxq->lro_mgr.get_skb_header = mv643xx_get_skb_header; | |
1942 | ||
1943 | memset(&rxq->lro_arr, 0, sizeof(rxq->lro_arr)); | |
1944 | ||
1945 | return 0; | |
1946 | ||
1947 | ||
1948 | out_free: | |
1949 | if (index == 0 && size <= mp->rx_desc_sram_size) | |
1950 | iounmap(rxq->rx_desc_area); | |
1951 | else | |
1952 | dma_free_coherent(NULL, size, | |
1953 | rxq->rx_desc_area, | |
1954 | rxq->rx_desc_dma); | |
1955 | ||
1956 | out: | |
1957 | return -ENOMEM; | |
1958 | } | |
1959 | ||
1960 | static void rxq_deinit(struct rx_queue *rxq) | |
1961 | { | |
1962 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); | |
1963 | int i; | |
1964 | ||
1965 | rxq_disable(rxq); | |
1966 | ||
1967 | for (i = 0; i < rxq->rx_ring_size; i++) { | |
1968 | if (rxq->rx_skb[i]) { | |
1969 | dev_kfree_skb(rxq->rx_skb[i]); | |
1970 | rxq->rx_desc_count--; | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | if (rxq->rx_desc_count) { | |
1975 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1976 | "error freeing rx ring -- %d skbs stuck\n", | |
1977 | rxq->rx_desc_count); | |
1978 | } | |
1979 | ||
1980 | if (rxq->index == 0 && | |
1981 | rxq->rx_desc_area_size <= mp->rx_desc_sram_size) | |
1982 | iounmap(rxq->rx_desc_area); | |
1983 | else | |
1984 | dma_free_coherent(NULL, rxq->rx_desc_area_size, | |
1985 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
1986 | ||
1987 | kfree(rxq->rx_skb); | |
1988 | } | |
1989 | ||
1990 | static int txq_init(struct mv643xx_eth_private *mp, int index) | |
1991 | { | |
1992 | struct tx_queue *txq = mp->txq + index; | |
1993 | struct tx_desc *tx_desc; | |
1994 | int size; | |
1995 | int i; | |
1996 | ||
1997 | txq->index = index; | |
1998 | ||
1999 | txq->tx_ring_size = mp->tx_ring_size; | |
2000 | ||
2001 | txq->tx_desc_count = 0; | |
2002 | txq->tx_curr_desc = 0; | |
2003 | txq->tx_used_desc = 0; | |
2004 | ||
2005 | size = txq->tx_ring_size * sizeof(struct tx_desc); | |
2006 | ||
2007 | if (index == 0 && size <= mp->tx_desc_sram_size) { | |
2008 | txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr, | |
2009 | mp->tx_desc_sram_size); | |
2010 | txq->tx_desc_dma = mp->tx_desc_sram_addr; | |
2011 | } else { | |
2012 | txq->tx_desc_area = dma_alloc_coherent(NULL, size, | |
2013 | &txq->tx_desc_dma, | |
2014 | GFP_KERNEL); | |
2015 | } | |
2016 | ||
2017 | if (txq->tx_desc_area == NULL) { | |
2018 | dev_printk(KERN_ERR, &mp->dev->dev, | |
2019 | "can't allocate tx ring (%d bytes)\n", size); | |
2020 | return -ENOMEM; | |
2021 | } | |
2022 | memset(txq->tx_desc_area, 0, size); | |
2023 | ||
2024 | txq->tx_desc_area_size = size; | |
2025 | ||
2026 | tx_desc = (struct tx_desc *)txq->tx_desc_area; | |
2027 | for (i = 0; i < txq->tx_ring_size; i++) { | |
2028 | struct tx_desc *txd = tx_desc + i; | |
2029 | int nexti; | |
2030 | ||
2031 | nexti = i + 1; | |
2032 | if (nexti == txq->tx_ring_size) | |
2033 | nexti = 0; | |
2034 | ||
2035 | txd->cmd_sts = 0; | |
2036 | txd->next_desc_ptr = txq->tx_desc_dma + | |
2037 | nexti * sizeof(struct tx_desc); | |
2038 | } | |
2039 | ||
2040 | skb_queue_head_init(&txq->tx_skb); | |
2041 | ||
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | static void txq_deinit(struct tx_queue *txq) | |
2046 | { | |
2047 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
2048 | ||
2049 | txq_disable(txq); | |
2050 | txq_reclaim(txq, txq->tx_ring_size, 1); | |
2051 | ||
2052 | BUG_ON(txq->tx_used_desc != txq->tx_curr_desc); | |
2053 | ||
2054 | if (txq->index == 0 && | |
2055 | txq->tx_desc_area_size <= mp->tx_desc_sram_size) | |
2056 | iounmap(txq->tx_desc_area); | |
2057 | else | |
2058 | dma_free_coherent(NULL, txq->tx_desc_area_size, | |
2059 | txq->tx_desc_area, txq->tx_desc_dma); | |
2060 | } | |
2061 | ||
2062 | ||
2063 | /* netdev ops and related ***************************************************/ | |
2064 | static int mv643xx_eth_collect_events(struct mv643xx_eth_private *mp) | |
2065 | { | |
2066 | u32 int_cause; | |
2067 | u32 int_cause_ext; | |
2068 | ||
2069 | int_cause = rdlp(mp, INT_CAUSE) & (INT_TX_END | INT_RX | INT_EXT); | |
2070 | if (int_cause == 0) | |
2071 | return 0; | |
2072 | ||
2073 | int_cause_ext = 0; | |
2074 | if (int_cause & INT_EXT) | |
2075 | int_cause_ext = rdlp(mp, INT_CAUSE_EXT); | |
2076 | ||
2077 | int_cause &= INT_TX_END | INT_RX; | |
2078 | if (int_cause) { | |
2079 | wrlp(mp, INT_CAUSE, ~int_cause); | |
2080 | mp->work_tx_end |= ((int_cause & INT_TX_END) >> 19) & | |
2081 | ~(rdlp(mp, TXQ_COMMAND) & 0xff); | |
2082 | mp->work_rx |= (int_cause & INT_RX) >> 2; | |
2083 | } | |
2084 | ||
2085 | int_cause_ext &= INT_EXT_LINK_PHY | INT_EXT_TX; | |
2086 | if (int_cause_ext) { | |
2087 | wrlp(mp, INT_CAUSE_EXT, ~int_cause_ext); | |
2088 | if (int_cause_ext & INT_EXT_LINK_PHY) | |
2089 | mp->work_link = 1; | |
2090 | mp->work_tx |= int_cause_ext & INT_EXT_TX; | |
2091 | } | |
2092 | ||
2093 | return 1; | |
2094 | } | |
2095 | ||
2096 | static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id) | |
2097 | { | |
2098 | struct net_device *dev = (struct net_device *)dev_id; | |
2099 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
2100 | ||
2101 | if (unlikely(!mv643xx_eth_collect_events(mp))) | |
2102 | return IRQ_NONE; | |
2103 | ||
2104 | wrlp(mp, INT_MASK, 0); | |
2105 | napi_schedule(&mp->napi); | |
2106 | ||
2107 | return IRQ_HANDLED; | |
2108 | } | |
2109 | ||
2110 | static void handle_link_event(struct mv643xx_eth_private *mp) | |
2111 | { | |
2112 | struct net_device *dev = mp->dev; | |
2113 | u32 port_status; | |
2114 | int speed; | |
2115 | int duplex; | |
2116 | int fc; | |
2117 | ||
2118 | port_status = rdlp(mp, PORT_STATUS); | |
2119 | if (!(port_status & LINK_UP)) { | |
2120 | if (netif_carrier_ok(dev)) { | |
2121 | int i; | |
2122 | ||
2123 | printk(KERN_INFO "%s: link down\n", dev->name); | |
2124 | ||
2125 | netif_carrier_off(dev); | |
2126 | ||
2127 | for (i = 0; i < mp->txq_count; i++) { | |
2128 | struct tx_queue *txq = mp->txq + i; | |
2129 | ||
2130 | txq_reclaim(txq, txq->tx_ring_size, 1); | |
2131 | txq_reset_hw_ptr(txq); | |
2132 | } | |
2133 | } | |
2134 | return; | |
2135 | } | |
2136 | ||
2137 | switch (port_status & PORT_SPEED_MASK) { | |
2138 | case PORT_SPEED_10: | |
2139 | speed = 10; | |
2140 | break; | |
2141 | case PORT_SPEED_100: | |
2142 | speed = 100; | |
2143 | break; | |
2144 | case PORT_SPEED_1000: | |
2145 | speed = 1000; | |
2146 | break; | |
2147 | default: | |
2148 | speed = -1; | |
2149 | break; | |
2150 | } | |
2151 | duplex = (port_status & FULL_DUPLEX) ? 1 : 0; | |
2152 | fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0; | |
2153 | ||
2154 | printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, " | |
2155 | "flow control %sabled\n", dev->name, | |
2156 | speed, duplex ? "full" : "half", | |
2157 | fc ? "en" : "dis"); | |
2158 | ||
2159 | if (!netif_carrier_ok(dev)) | |
2160 | netif_carrier_on(dev); | |
2161 | } | |
2162 | ||
2163 | static int mv643xx_eth_poll(struct napi_struct *napi, int budget) | |
2164 | { | |
2165 | struct mv643xx_eth_private *mp; | |
2166 | int work_done; | |
2167 | ||
2168 | mp = container_of(napi, struct mv643xx_eth_private, napi); | |
2169 | ||
2170 | mp->work_rx_refill |= mp->work_rx_oom; | |
2171 | mp->work_rx_oom = 0; | |
2172 | ||
2173 | work_done = 0; | |
2174 | while (work_done < budget) { | |
2175 | u8 queue_mask; | |
2176 | int queue; | |
2177 | int work_tbd; | |
2178 | ||
2179 | if (mp->work_link) { | |
2180 | mp->work_link = 0; | |
2181 | handle_link_event(mp); | |
2182 | continue; | |
2183 | } | |
2184 | ||
2185 | queue_mask = mp->work_tx | mp->work_tx_end | | |
2186 | mp->work_rx | mp->work_rx_refill; | |
2187 | if (!queue_mask) { | |
2188 | if (mv643xx_eth_collect_events(mp)) | |
2189 | continue; | |
2190 | break; | |
2191 | } | |
2192 | ||
2193 | queue = fls(queue_mask) - 1; | |
2194 | queue_mask = 1 << queue; | |
2195 | ||
2196 | work_tbd = budget - work_done; | |
2197 | if (work_tbd > 16) | |
2198 | work_tbd = 16; | |
2199 | ||
2200 | if (mp->work_tx_end & queue_mask) { | |
2201 | txq_kick(mp->txq + queue); | |
2202 | } else if (mp->work_tx & queue_mask) { | |
2203 | work_done += txq_reclaim(mp->txq + queue, work_tbd, 0); | |
2204 | txq_maybe_wake(mp->txq + queue); | |
2205 | } else if (mp->work_rx & queue_mask) { | |
2206 | work_done += rxq_process(mp->rxq + queue, work_tbd); | |
2207 | } else if (mp->work_rx_refill & queue_mask) { | |
2208 | work_done += rxq_refill(mp->rxq + queue, work_tbd); | |
2209 | } else { | |
2210 | BUG(); | |
2211 | } | |
2212 | } | |
2213 | ||
2214 | if (work_done < budget) { | |
2215 | if (mp->work_rx_oom) | |
2216 | mod_timer(&mp->rx_oom, jiffies + (HZ / 10)); | |
2217 | napi_complete(napi); | |
2218 | wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT); | |
2219 | } | |
2220 | ||
2221 | return work_done; | |
2222 | } | |
2223 | ||
2224 | static inline void oom_timer_wrapper(unsigned long data) | |
2225 | { | |
2226 | struct mv643xx_eth_private *mp = (void *)data; | |
2227 | ||
2228 | napi_schedule(&mp->napi); | |
2229 | } | |
2230 | ||
2231 | static void phy_reset(struct mv643xx_eth_private *mp) | |
2232 | { | |
2233 | int data; | |
2234 | ||
2235 | data = phy_read(mp->phy, MII_BMCR); | |
2236 | if (data < 0) | |
2237 | return; | |
2238 | ||
2239 | data |= BMCR_RESET; | |
2240 | if (phy_write(mp->phy, MII_BMCR, data) < 0) | |
2241 | return; | |
2242 | ||
2243 | do { | |
2244 | data = phy_read(mp->phy, MII_BMCR); | |
2245 | } while (data >= 0 && data & BMCR_RESET); | |
2246 | } | |
2247 | ||
2248 | static void port_start(struct mv643xx_eth_private *mp) | |
2249 | { | |
2250 | u32 pscr; | |
2251 | int i; | |
2252 | ||
2253 | /* | |
2254 | * Perform PHY reset, if there is a PHY. | |
2255 | */ | |
2256 | if (mp->phy != NULL) { | |
2257 | struct ethtool_cmd cmd; | |
2258 | ||
2259 | mv643xx_eth_get_settings(mp->dev, &cmd); | |
2260 | phy_reset(mp); | |
2261 | mv643xx_eth_set_settings(mp->dev, &cmd); | |
2262 | } | |
2263 | ||
2264 | /* | |
2265 | * Configure basic link parameters. | |
2266 | */ | |
2267 | pscr = rdlp(mp, PORT_SERIAL_CONTROL); | |
2268 | ||
2269 | pscr |= SERIAL_PORT_ENABLE; | |
2270 | wrlp(mp, PORT_SERIAL_CONTROL, pscr); | |
2271 | ||
2272 | pscr |= DO_NOT_FORCE_LINK_FAIL; | |
2273 | if (mp->phy == NULL) | |
2274 | pscr |= FORCE_LINK_PASS; | |
2275 | wrlp(mp, PORT_SERIAL_CONTROL, pscr); | |
2276 | ||
2277 | wrlp(mp, SDMA_CONFIG, PORT_SDMA_CONFIG_DEFAULT_VALUE); | |
2278 | ||
2279 | /* | |
2280 | * Configure TX path and queues. | |
2281 | */ | |
2282 | tx_set_rate(mp, 1000000000, 16777216); | |
2283 | for (i = 0; i < mp->txq_count; i++) { | |
2284 | struct tx_queue *txq = mp->txq + i; | |
2285 | ||
2286 | txq_reset_hw_ptr(txq); | |
2287 | txq_set_rate(txq, 1000000000, 16777216); | |
2288 | txq_set_fixed_prio_mode(txq); | |
2289 | } | |
2290 | ||
2291 | /* | |
2292 | * Add configured unicast address to address filter table. | |
2293 | */ | |
2294 | mv643xx_eth_program_unicast_filter(mp->dev); | |
2295 | ||
2296 | /* | |
2297 | * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast | |
2298 | * frames to RX queue #0, and include the pseudo-header when | |
2299 | * calculating receive checksums. | |
2300 | */ | |
2301 | wrlp(mp, PORT_CONFIG, 0x02000000); | |
2302 | ||
2303 | /* | |
2304 | * Treat BPDUs as normal multicasts, and disable partition mode. | |
2305 | */ | |
2306 | wrlp(mp, PORT_CONFIG_EXT, 0x00000000); | |
2307 | ||
2308 | /* | |
2309 | * Enable the receive queues. | |
2310 | */ | |
2311 | for (i = 0; i < mp->rxq_count; i++) { | |
2312 | struct rx_queue *rxq = mp->rxq + i; | |
2313 | u32 addr; | |
2314 | ||
2315 | addr = (u32)rxq->rx_desc_dma; | |
2316 | addr += rxq->rx_curr_desc * sizeof(struct rx_desc); | |
2317 | wrlp(mp, RXQ_CURRENT_DESC_PTR(i), addr); | |
2318 | ||
2319 | rxq_enable(rxq); | |
2320 | } | |
2321 | } | |
2322 | ||
2323 | static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private *mp) | |
2324 | { | |
2325 | int skb_size; | |
2326 | ||
2327 | /* | |
2328 | * Reserve 2+14 bytes for an ethernet header (the hardware | |
2329 | * automatically prepends 2 bytes of dummy data to each | |
2330 | * received packet), 16 bytes for up to four VLAN tags, and | |
2331 | * 4 bytes for the trailing FCS -- 36 bytes total. | |
2332 | */ | |
2333 | skb_size = mp->dev->mtu + 36; | |
2334 | ||
2335 | /* | |
2336 | * Make sure that the skb size is a multiple of 8 bytes, as | |
2337 | * the lower three bits of the receive descriptor's buffer | |
2338 | * size field are ignored by the hardware. | |
2339 | */ | |
2340 | mp->skb_size = (skb_size + 7) & ~7; | |
2341 | } | |
2342 | ||
2343 | static int mv643xx_eth_open(struct net_device *dev) | |
2344 | { | |
2345 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
2346 | int err; | |
2347 | int i; | |
2348 | ||
2349 | wrlp(mp, INT_CAUSE, 0); | |
2350 | wrlp(mp, INT_CAUSE_EXT, 0); | |
2351 | rdlp(mp, INT_CAUSE_EXT); | |
2352 | ||
2353 | err = request_irq(dev->irq, mv643xx_eth_irq, | |
2354 | IRQF_SHARED, dev->name, dev); | |
2355 | if (err) { | |
2356 | dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n"); | |
2357 | return -EAGAIN; | |
2358 | } | |
2359 | ||
2360 | mv643xx_eth_recalc_skb_size(mp); | |
2361 | ||
2362 | napi_enable(&mp->napi); | |
2363 | ||
2364 | skb_queue_head_init(&mp->rx_recycle); | |
2365 | ||
2366 | for (i = 0; i < mp->rxq_count; i++) { | |
2367 | err = rxq_init(mp, i); | |
2368 | if (err) { | |
2369 | while (--i >= 0) | |
2370 | rxq_deinit(mp->rxq + i); | |
2371 | goto out; | |
2372 | } | |
2373 | ||
2374 | rxq_refill(mp->rxq + i, INT_MAX); | |
2375 | } | |
2376 | ||
2377 | if (mp->work_rx_oom) { | |
2378 | mp->rx_oom.expires = jiffies + (HZ / 10); | |
2379 | add_timer(&mp->rx_oom); | |
2380 | } | |
2381 | ||
2382 | for (i = 0; i < mp->txq_count; i++) { | |
2383 | err = txq_init(mp, i); | |
2384 | if (err) { | |
2385 | while (--i >= 0) | |
2386 | txq_deinit(mp->txq + i); | |
2387 | goto out_free; | |
2388 | } | |
2389 | } | |
2390 | ||
2391 | netif_carrier_off(dev); | |
2392 | ||
2393 | port_start(mp); | |
2394 | ||
2395 | set_rx_coal(mp, 0); | |
2396 | set_tx_coal(mp, 0); | |
2397 | ||
2398 | wrlp(mp, INT_MASK_EXT, INT_EXT_LINK_PHY | INT_EXT_TX); | |
2399 | wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT); | |
2400 | ||
2401 | return 0; | |
2402 | ||
2403 | ||
2404 | out_free: | |
2405 | for (i = 0; i < mp->rxq_count; i++) | |
2406 | rxq_deinit(mp->rxq + i); | |
2407 | out: | |
2408 | free_irq(dev->irq, dev); | |
2409 | ||
2410 | return err; | |
2411 | } | |
2412 | ||
2413 | static void port_reset(struct mv643xx_eth_private *mp) | |
2414 | { | |
2415 | unsigned int data; | |
2416 | int i; | |
2417 | ||
2418 | for (i = 0; i < mp->rxq_count; i++) | |
2419 | rxq_disable(mp->rxq + i); | |
2420 | for (i = 0; i < mp->txq_count; i++) | |
2421 | txq_disable(mp->txq + i); | |
2422 | ||
2423 | while (1) { | |
2424 | u32 ps = rdlp(mp, PORT_STATUS); | |
2425 | ||
2426 | if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY) | |
2427 | break; | |
2428 | udelay(10); | |
2429 | } | |
2430 | ||
2431 | /* Reset the Enable bit in the Configuration Register */ | |
2432 | data = rdlp(mp, PORT_SERIAL_CONTROL); | |
2433 | data &= ~(SERIAL_PORT_ENABLE | | |
2434 | DO_NOT_FORCE_LINK_FAIL | | |
2435 | FORCE_LINK_PASS); | |
2436 | wrlp(mp, PORT_SERIAL_CONTROL, data); | |
2437 | } | |
2438 | ||
2439 | static int mv643xx_eth_stop(struct net_device *dev) | |
2440 | { | |
2441 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
2442 | int i; | |
2443 | ||
2444 | wrlp(mp, INT_MASK_EXT, 0x00000000); | |
2445 | wrlp(mp, INT_MASK, 0x00000000); | |
2446 | rdlp(mp, INT_MASK); | |
2447 | ||
2448 | napi_disable(&mp->napi); | |
2449 | ||
2450 | del_timer_sync(&mp->rx_oom); | |
2451 | ||
2452 | netif_carrier_off(dev); | |
2453 | ||
2454 | free_irq(dev->irq, dev); | |
2455 | ||
2456 | port_reset(mp); | |
2457 | mv643xx_eth_get_stats(dev); | |
2458 | mib_counters_update(mp); | |
2459 | del_timer_sync(&mp->mib_counters_timer); | |
2460 | ||
2461 | skb_queue_purge(&mp->rx_recycle); | |
2462 | ||
2463 | for (i = 0; i < mp->rxq_count; i++) | |
2464 | rxq_deinit(mp->rxq + i); | |
2465 | for (i = 0; i < mp->txq_count; i++) | |
2466 | txq_deinit(mp->txq + i); | |
2467 | ||
2468 | return 0; | |
2469 | } | |
2470 | ||
2471 | static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
2472 | { | |
2473 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
2474 | ||
2475 | if (mp->phy != NULL) | |
2476 | return phy_mii_ioctl(mp->phy, if_mii(ifr), cmd); | |
2477 | ||
2478 | return -EOPNOTSUPP; | |
2479 | } | |
2480 | ||
2481 | static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) | |
2482 | { | |
2483 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
2484 | ||
2485 | if (new_mtu < 64 || new_mtu > 9500) | |
2486 | return -EINVAL; | |
2487 | ||
2488 | dev->mtu = new_mtu; | |
2489 | mv643xx_eth_recalc_skb_size(mp); | |
2490 | tx_set_rate(mp, 1000000000, 16777216); | |
2491 | ||
2492 | if (!netif_running(dev)) | |
2493 | return 0; | |
2494 | ||
2495 | /* | |
2496 | * Stop and then re-open the interface. This will allocate RX | |
2497 | * skbs of the new MTU. | |
2498 | * There is a possible danger that the open will not succeed, | |
2499 | * due to memory being full. | |
2500 | */ | |
2501 | mv643xx_eth_stop(dev); | |
2502 | if (mv643xx_eth_open(dev)) { | |
2503 | dev_printk(KERN_ERR, &dev->dev, | |
2504 | "fatal error on re-opening device after " | |
2505 | "MTU change\n"); | |
2506 | } | |
2507 | ||
2508 | return 0; | |
2509 | } | |
2510 | ||
2511 | static void tx_timeout_task(struct work_struct *ugly) | |
2512 | { | |
2513 | struct mv643xx_eth_private *mp; | |
2514 | ||
2515 | mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task); | |
2516 | if (netif_running(mp->dev)) { | |
2517 | netif_tx_stop_all_queues(mp->dev); | |
2518 | port_reset(mp); | |
2519 | port_start(mp); | |
2520 | netif_tx_wake_all_queues(mp->dev); | |
2521 | } | |
2522 | } | |
2523 | ||
2524 | static void mv643xx_eth_tx_timeout(struct net_device *dev) | |
2525 | { | |
2526 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
2527 | ||
2528 | dev_printk(KERN_INFO, &dev->dev, "tx timeout\n"); | |
2529 | ||
2530 | schedule_work(&mp->tx_timeout_task); | |
2531 | } | |
2532 | ||
2533 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2534 | static void mv643xx_eth_netpoll(struct net_device *dev) | |
2535 | { | |
2536 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
2537 | ||
2538 | wrlp(mp, INT_MASK, 0x00000000); | |
2539 | rdlp(mp, INT_MASK); | |
2540 | ||
2541 | mv643xx_eth_irq(dev->irq, dev); | |
2542 | ||
2543 | wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT); | |
2544 | } | |
2545 | #endif | |
2546 | ||
2547 | ||
2548 | /* platform glue ************************************************************/ | |
2549 | static void | |
2550 | mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp, | |
2551 | struct mbus_dram_target_info *dram) | |
2552 | { | |
2553 | void __iomem *base = msp->base; | |
2554 | u32 win_enable; | |
2555 | u32 win_protect; | |
2556 | int i; | |
2557 | ||
2558 | for (i = 0; i < 6; i++) { | |
2559 | writel(0, base + WINDOW_BASE(i)); | |
2560 | writel(0, base + WINDOW_SIZE(i)); | |
2561 | if (i < 4) | |
2562 | writel(0, base + WINDOW_REMAP_HIGH(i)); | |
2563 | } | |
2564 | ||
2565 | win_enable = 0x3f; | |
2566 | win_protect = 0; | |
2567 | ||
2568 | for (i = 0; i < dram->num_cs; i++) { | |
2569 | struct mbus_dram_window *cs = dram->cs + i; | |
2570 | ||
2571 | writel((cs->base & 0xffff0000) | | |
2572 | (cs->mbus_attr << 8) | | |
2573 | dram->mbus_dram_target_id, base + WINDOW_BASE(i)); | |
2574 | writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); | |
2575 | ||
2576 | win_enable &= ~(1 << i); | |
2577 | win_protect |= 3 << (2 * i); | |
2578 | } | |
2579 | ||
2580 | writel(win_enable, base + WINDOW_BAR_ENABLE); | |
2581 | msp->win_protect = win_protect; | |
2582 | } | |
2583 | ||
2584 | static void infer_hw_params(struct mv643xx_eth_shared_private *msp) | |
2585 | { | |
2586 | /* | |
2587 | * Check whether we have a 14-bit coal limit field in bits | |
2588 | * [21:8], or a 16-bit coal limit in bits [25,21:7] of the | |
2589 | * SDMA config register. | |
2590 | */ | |
2591 | writel(0x02000000, msp->base + 0x0400 + SDMA_CONFIG); | |
2592 | if (readl(msp->base + 0x0400 + SDMA_CONFIG) & 0x02000000) | |
2593 | msp->extended_rx_coal_limit = 1; | |
2594 | else | |
2595 | msp->extended_rx_coal_limit = 0; | |
2596 | ||
2597 | /* | |
2598 | * Check whether the MAC supports TX rate control, and if | |
2599 | * yes, whether its associated registers are in the old or | |
2600 | * the new place. | |
2601 | */ | |
2602 | writel(1, msp->base + 0x0400 + TX_BW_MTU_MOVED); | |
2603 | if (readl(msp->base + 0x0400 + TX_BW_MTU_MOVED) & 1) { | |
2604 | msp->tx_bw_control = TX_BW_CONTROL_NEW_LAYOUT; | |
2605 | } else { | |
2606 | writel(7, msp->base + 0x0400 + TX_BW_RATE); | |
2607 | if (readl(msp->base + 0x0400 + TX_BW_RATE) & 7) | |
2608 | msp->tx_bw_control = TX_BW_CONTROL_OLD_LAYOUT; | |
2609 | else | |
2610 | msp->tx_bw_control = TX_BW_CONTROL_ABSENT; | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | static int mv643xx_eth_shared_probe(struct platform_device *pdev) | |
2615 | { | |
2616 | static int mv643xx_eth_version_printed; | |
2617 | struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; | |
2618 | struct mv643xx_eth_shared_private *msp; | |
2619 | struct resource *res; | |
2620 | int ret; | |
2621 | ||
2622 | if (!mv643xx_eth_version_printed++) | |
2623 | printk(KERN_NOTICE "MV-643xx 10/100/1000 ethernet " | |
2624 | "driver version %s\n", mv643xx_eth_driver_version); | |
2625 | ||
2626 | ret = -EINVAL; | |
2627 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2628 | if (res == NULL) | |
2629 | goto out; | |
2630 | ||
2631 | ret = -ENOMEM; | |
2632 | msp = kmalloc(sizeof(*msp), GFP_KERNEL); | |
2633 | if (msp == NULL) | |
2634 | goto out; | |
2635 | memset(msp, 0, sizeof(*msp)); | |
2636 | ||
2637 | msp->base = ioremap(res->start, res->end - res->start + 1); | |
2638 | if (msp->base == NULL) | |
2639 | goto out_free; | |
2640 | ||
2641 | /* | |
2642 | * Set up and register SMI bus. | |
2643 | */ | |
2644 | if (pd == NULL || pd->shared_smi == NULL) { | |
2645 | msp->smi_bus = mdiobus_alloc(); | |
2646 | if (msp->smi_bus == NULL) | |
2647 | goto out_unmap; | |
2648 | ||
2649 | msp->smi_bus->priv = msp; | |
2650 | msp->smi_bus->name = "mv643xx_eth smi"; | |
2651 | msp->smi_bus->read = smi_bus_read; | |
2652 | msp->smi_bus->write = smi_bus_write, | |
2653 | snprintf(msp->smi_bus->id, MII_BUS_ID_SIZE, "%d", pdev->id); | |
2654 | msp->smi_bus->parent = &pdev->dev; | |
2655 | msp->smi_bus->phy_mask = 0xffffffff; | |
2656 | if (mdiobus_register(msp->smi_bus) < 0) | |
2657 | goto out_free_mii_bus; | |
2658 | msp->smi = msp; | |
2659 | } else { | |
2660 | msp->smi = platform_get_drvdata(pd->shared_smi); | |
2661 | } | |
2662 | ||
2663 | msp->err_interrupt = NO_IRQ; | |
2664 | init_waitqueue_head(&msp->smi_busy_wait); | |
2665 | ||
2666 | /* | |
2667 | * Check whether the error interrupt is hooked up. | |
2668 | */ | |
2669 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
2670 | if (res != NULL) { | |
2671 | int err; | |
2672 | ||
2673 | err = request_irq(res->start, mv643xx_eth_err_irq, | |
2674 | IRQF_SHARED, "mv643xx_eth", msp); | |
2675 | if (!err) { | |
2676 | writel(ERR_INT_SMI_DONE, msp->base + ERR_INT_MASK); | |
2677 | msp->err_interrupt = res->start; | |
2678 | } | |
2679 | } | |
2680 | ||
2681 | /* | |
2682 | * (Re-)program MBUS remapping windows if we are asked to. | |
2683 | */ | |
2684 | if (pd != NULL && pd->dram != NULL) | |
2685 | mv643xx_eth_conf_mbus_windows(msp, pd->dram); | |
2686 | ||
2687 | /* | |
2688 | * Detect hardware parameters. | |
2689 | */ | |
2690 | msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; | |
2691 | infer_hw_params(msp); | |
2692 | ||
2693 | platform_set_drvdata(pdev, msp); | |
2694 | ||
2695 | return 0; | |
2696 | ||
2697 | out_free_mii_bus: | |
2698 | mdiobus_free(msp->smi_bus); | |
2699 | out_unmap: | |
2700 | iounmap(msp->base); | |
2701 | out_free: | |
2702 | kfree(msp); | |
2703 | out: | |
2704 | return ret; | |
2705 | } | |
2706 | ||
2707 | static int mv643xx_eth_shared_remove(struct platform_device *pdev) | |
2708 | { | |
2709 | struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev); | |
2710 | struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; | |
2711 | ||
2712 | if (pd == NULL || pd->shared_smi == NULL) { | |
2713 | mdiobus_unregister(msp->smi_bus); | |
2714 | mdiobus_free(msp->smi_bus); | |
2715 | } | |
2716 | if (msp->err_interrupt != NO_IRQ) | |
2717 | free_irq(msp->err_interrupt, msp); | |
2718 | iounmap(msp->base); | |
2719 | kfree(msp); | |
2720 | ||
2721 | return 0; | |
2722 | } | |
2723 | ||
2724 | static struct platform_driver mv643xx_eth_shared_driver = { | |
2725 | .probe = mv643xx_eth_shared_probe, | |
2726 | .remove = mv643xx_eth_shared_remove, | |
2727 | .driver = { | |
2728 | .name = MV643XX_ETH_SHARED_NAME, | |
2729 | .owner = THIS_MODULE, | |
2730 | }, | |
2731 | }; | |
2732 | ||
2733 | static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr) | |
2734 | { | |
2735 | int addr_shift = 5 * mp->port_num; | |
2736 | u32 data; | |
2737 | ||
2738 | data = rdl(mp, PHY_ADDR); | |
2739 | data &= ~(0x1f << addr_shift); | |
2740 | data |= (phy_addr & 0x1f) << addr_shift; | |
2741 | wrl(mp, PHY_ADDR, data); | |
2742 | } | |
2743 | ||
2744 | static int phy_addr_get(struct mv643xx_eth_private *mp) | |
2745 | { | |
2746 | unsigned int data; | |
2747 | ||
2748 | data = rdl(mp, PHY_ADDR); | |
2749 | ||
2750 | return (data >> (5 * mp->port_num)) & 0x1f; | |
2751 | } | |
2752 | ||
2753 | static void set_params(struct mv643xx_eth_private *mp, | |
2754 | struct mv643xx_eth_platform_data *pd) | |
2755 | { | |
2756 | struct net_device *dev = mp->dev; | |
2757 | ||
2758 | if (is_valid_ether_addr(pd->mac_addr)) | |
2759 | memcpy(dev->dev_addr, pd->mac_addr, 6); | |
2760 | else | |
2761 | uc_addr_get(mp, dev->dev_addr); | |
2762 | ||
2763 | mp->rx_ring_size = DEFAULT_RX_QUEUE_SIZE; | |
2764 | if (pd->rx_queue_size) | |
2765 | mp->rx_ring_size = pd->rx_queue_size; | |
2766 | mp->rx_desc_sram_addr = pd->rx_sram_addr; | |
2767 | mp->rx_desc_sram_size = pd->rx_sram_size; | |
2768 | ||
2769 | mp->rxq_count = pd->rx_queue_count ? : 1; | |
2770 | ||
2771 | mp->tx_ring_size = DEFAULT_TX_QUEUE_SIZE; | |
2772 | if (pd->tx_queue_size) | |
2773 | mp->tx_ring_size = pd->tx_queue_size; | |
2774 | mp->tx_desc_sram_addr = pd->tx_sram_addr; | |
2775 | mp->tx_desc_sram_size = pd->tx_sram_size; | |
2776 | ||
2777 | mp->txq_count = pd->tx_queue_count ? : 1; | |
2778 | } | |
2779 | ||
2780 | static struct phy_device *phy_scan(struct mv643xx_eth_private *mp, | |
2781 | int phy_addr) | |
2782 | { | |
2783 | struct mii_bus *bus = mp->shared->smi->smi_bus; | |
2784 | struct phy_device *phydev; | |
2785 | int start; | |
2786 | int num; | |
2787 | int i; | |
2788 | ||
2789 | if (phy_addr == MV643XX_ETH_PHY_ADDR_DEFAULT) { | |
2790 | start = phy_addr_get(mp) & 0x1f; | |
2791 | num = 32; | |
2792 | } else { | |
2793 | start = phy_addr & 0x1f; | |
2794 | num = 1; | |
2795 | } | |
2796 | ||
2797 | phydev = NULL; | |
2798 | for (i = 0; i < num; i++) { | |
2799 | int addr = (start + i) & 0x1f; | |
2800 | ||
2801 | if (bus->phy_map[addr] == NULL) | |
2802 | mdiobus_scan(bus, addr); | |
2803 | ||
2804 | if (phydev == NULL) { | |
2805 | phydev = bus->phy_map[addr]; | |
2806 | if (phydev != NULL) | |
2807 | phy_addr_set(mp, addr); | |
2808 | } | |
2809 | } | |
2810 | ||
2811 | return phydev; | |
2812 | } | |
2813 | ||
2814 | static void phy_init(struct mv643xx_eth_private *mp, int speed, int duplex) | |
2815 | { | |
2816 | struct phy_device *phy = mp->phy; | |
2817 | ||
2818 | phy_reset(mp); | |
2819 | ||
2820 | phy_attach(mp->dev, dev_name(&phy->dev), 0, PHY_INTERFACE_MODE_GMII); | |
2821 | ||
2822 | if (speed == 0) { | |
2823 | phy->autoneg = AUTONEG_ENABLE; | |
2824 | phy->speed = 0; | |
2825 | phy->duplex = 0; | |
2826 | phy->advertising = phy->supported | ADVERTISED_Autoneg; | |
2827 | } else { | |
2828 | phy->autoneg = AUTONEG_DISABLE; | |
2829 | phy->advertising = 0; | |
2830 | phy->speed = speed; | |
2831 | phy->duplex = duplex; | |
2832 | } | |
2833 | phy_start_aneg(phy); | |
2834 | } | |
2835 | ||
2836 | static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex) | |
2837 | { | |
2838 | u32 pscr; | |
2839 | ||
2840 | pscr = rdlp(mp, PORT_SERIAL_CONTROL); | |
2841 | if (pscr & SERIAL_PORT_ENABLE) { | |
2842 | pscr &= ~SERIAL_PORT_ENABLE; | |
2843 | wrlp(mp, PORT_SERIAL_CONTROL, pscr); | |
2844 | } | |
2845 | ||
2846 | pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED; | |
2847 | if (mp->phy == NULL) { | |
2848 | pscr |= DISABLE_AUTO_NEG_SPEED_GMII; | |
2849 | if (speed == SPEED_1000) | |
2850 | pscr |= SET_GMII_SPEED_TO_1000; | |
2851 | else if (speed == SPEED_100) | |
2852 | pscr |= SET_MII_SPEED_TO_100; | |
2853 | ||
2854 | pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL; | |
2855 | ||
2856 | pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX; | |
2857 | if (duplex == DUPLEX_FULL) | |
2858 | pscr |= SET_FULL_DUPLEX_MODE; | |
2859 | } | |
2860 | ||
2861 | wrlp(mp, PORT_SERIAL_CONTROL, pscr); | |
2862 | } | |
2863 | ||
2864 | static int mv643xx_eth_probe(struct platform_device *pdev) | |
2865 | { | |
2866 | struct mv643xx_eth_platform_data *pd; | |
2867 | struct mv643xx_eth_private *mp; | |
2868 | struct net_device *dev; | |
2869 | struct resource *res; | |
2870 | int err; | |
2871 | ||
2872 | pd = pdev->dev.platform_data; | |
2873 | if (pd == NULL) { | |
2874 | dev_printk(KERN_ERR, &pdev->dev, | |
2875 | "no mv643xx_eth_platform_data\n"); | |
2876 | return -ENODEV; | |
2877 | } | |
2878 | ||
2879 | if (pd->shared == NULL) { | |
2880 | dev_printk(KERN_ERR, &pdev->dev, | |
2881 | "no mv643xx_eth_platform_data->shared\n"); | |
2882 | return -ENODEV; | |
2883 | } | |
2884 | ||
2885 | dev = alloc_etherdev_mq(sizeof(struct mv643xx_eth_private), 8); | |
2886 | if (!dev) | |
2887 | return -ENOMEM; | |
2888 | ||
2889 | mp = netdev_priv(dev); | |
2890 | platform_set_drvdata(pdev, mp); | |
2891 | ||
2892 | mp->shared = platform_get_drvdata(pd->shared); | |
2893 | mp->base = mp->shared->base + 0x0400 + (pd->port_number << 10); | |
2894 | mp->port_num = pd->port_number; | |
2895 | ||
2896 | mp->dev = dev; | |
2897 | ||
2898 | set_params(mp, pd); | |
2899 | dev->real_num_tx_queues = mp->txq_count; | |
2900 | ||
2901 | if (pd->phy_addr != MV643XX_ETH_PHY_NONE) | |
2902 | mp->phy = phy_scan(mp, pd->phy_addr); | |
2903 | ||
2904 | if (mp->phy != NULL) | |
2905 | phy_init(mp, pd->speed, pd->duplex); | |
2906 | ||
2907 | SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); | |
2908 | ||
2909 | init_pscr(mp, pd->speed, pd->duplex); | |
2910 | ||
2911 | ||
2912 | mib_counters_clear(mp); | |
2913 | ||
2914 | init_timer(&mp->mib_counters_timer); | |
2915 | mp->mib_counters_timer.data = (unsigned long)mp; | |
2916 | mp->mib_counters_timer.function = mib_counters_timer_wrapper; | |
2917 | mp->mib_counters_timer.expires = jiffies + 30 * HZ; | |
2918 | add_timer(&mp->mib_counters_timer); | |
2919 | ||
2920 | spin_lock_init(&mp->mib_counters_lock); | |
2921 | ||
2922 | INIT_WORK(&mp->tx_timeout_task, tx_timeout_task); | |
2923 | ||
2924 | netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 128); | |
2925 | ||
2926 | init_timer(&mp->rx_oom); | |
2927 | mp->rx_oom.data = (unsigned long)mp; | |
2928 | mp->rx_oom.function = oom_timer_wrapper; | |
2929 | ||
2930 | ||
2931 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
2932 | BUG_ON(!res); | |
2933 | dev->irq = res->start; | |
2934 | ||
2935 | dev->get_stats = mv643xx_eth_get_stats; | |
2936 | dev->hard_start_xmit = mv643xx_eth_xmit; | |
2937 | dev->open = mv643xx_eth_open; | |
2938 | dev->stop = mv643xx_eth_stop; | |
2939 | dev->set_rx_mode = mv643xx_eth_set_rx_mode; | |
2940 | dev->set_mac_address = mv643xx_eth_set_mac_address; | |
2941 | dev->do_ioctl = mv643xx_eth_ioctl; | |
2942 | dev->change_mtu = mv643xx_eth_change_mtu; | |
2943 | dev->tx_timeout = mv643xx_eth_tx_timeout; | |
2944 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2945 | dev->poll_controller = mv643xx_eth_netpoll; | |
2946 | #endif | |
2947 | dev->watchdog_timeo = 2 * HZ; | |
2948 | dev->base_addr = 0; | |
2949 | ||
2950 | dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; | |
2951 | dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM; | |
2952 | ||
2953 | SET_NETDEV_DEV(dev, &pdev->dev); | |
2954 | ||
2955 | if (mp->shared->win_protect) | |
2956 | wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect); | |
2957 | ||
2958 | err = register_netdev(dev); | |
2959 | if (err) | |
2960 | goto out; | |
2961 | ||
2962 | dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %pM\n", | |
2963 | mp->port_num, dev->dev_addr); | |
2964 | ||
2965 | if (mp->tx_desc_sram_size > 0) | |
2966 | dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n"); | |
2967 | ||
2968 | return 0; | |
2969 | ||
2970 | out: | |
2971 | free_netdev(dev); | |
2972 | ||
2973 | return err; | |
2974 | } | |
2975 | ||
2976 | static int mv643xx_eth_remove(struct platform_device *pdev) | |
2977 | { | |
2978 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); | |
2979 | ||
2980 | unregister_netdev(mp->dev); | |
2981 | if (mp->phy != NULL) | |
2982 | phy_detach(mp->phy); | |
2983 | flush_scheduled_work(); | |
2984 | free_netdev(mp->dev); | |
2985 | ||
2986 | platform_set_drvdata(pdev, NULL); | |
2987 | ||
2988 | return 0; | |
2989 | } | |
2990 | ||
2991 | static void mv643xx_eth_shutdown(struct platform_device *pdev) | |
2992 | { | |
2993 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); | |
2994 | ||
2995 | /* Mask all interrupts on ethernet port */ | |
2996 | wrlp(mp, INT_MASK, 0); | |
2997 | rdlp(mp, INT_MASK); | |
2998 | ||
2999 | if (netif_running(mp->dev)) | |
3000 | port_reset(mp); | |
3001 | } | |
3002 | ||
3003 | static struct platform_driver mv643xx_eth_driver = { | |
3004 | .probe = mv643xx_eth_probe, | |
3005 | .remove = mv643xx_eth_remove, | |
3006 | .shutdown = mv643xx_eth_shutdown, | |
3007 | .driver = { | |
3008 | .name = MV643XX_ETH_NAME, | |
3009 | .owner = THIS_MODULE, | |
3010 | }, | |
3011 | }; | |
3012 | ||
3013 | static int __init mv643xx_eth_init_module(void) | |
3014 | { | |
3015 | int rc; | |
3016 | ||
3017 | rc = platform_driver_register(&mv643xx_eth_shared_driver); | |
3018 | if (!rc) { | |
3019 | rc = platform_driver_register(&mv643xx_eth_driver); | |
3020 | if (rc) | |
3021 | platform_driver_unregister(&mv643xx_eth_shared_driver); | |
3022 | } | |
3023 | ||
3024 | return rc; | |
3025 | } | |
3026 | module_init(mv643xx_eth_init_module); | |
3027 | ||
3028 | static void __exit mv643xx_eth_cleanup_module(void) | |
3029 | { | |
3030 | platform_driver_unregister(&mv643xx_eth_driver); | |
3031 | platform_driver_unregister(&mv643xx_eth_shared_driver); | |
3032 | } | |
3033 | module_exit(mv643xx_eth_cleanup_module); | |
3034 | ||
3035 | MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, " | |
3036 | "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek"); | |
3037 | MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); | |
3038 | MODULE_LICENSE("GPL"); | |
3039 | MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); | |
3040 | MODULE_ALIAS("platform:" MV643XX_ETH_NAME); |