Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
9c1bbdfe | 2 | * Driver for Marvell Discovery (MV643XX) and Marvell Orion ethernet ports |
1da177e4 LT |
3 | * Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com> |
4 | * | |
5 | * Based on the 64360 driver from: | |
4547fa61 LB |
6 | * Copyright (C) 2002 Rabeeh Khoury <rabeeh@galileo.co.il> |
7 | * Rabeeh Khoury <rabeeh@marvell.com> | |
1da177e4 LT |
8 | * |
9 | * Copyright (C) 2003 PMC-Sierra, Inc., | |
3bb8a18a | 10 | * written by Manish Lachwani |
1da177e4 LT |
11 | * |
12 | * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org> | |
13 | * | |
c8aaea25 | 14 | * Copyright (C) 2004-2006 MontaVista Software, Inc. |
1da177e4 LT |
15 | * Dale Farnsworth <dale@farnsworth.org> |
16 | * | |
17 | * Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com> | |
18 | * <sjhill@realitydiluted.com> | |
19 | * | |
4547fa61 LB |
20 | * Copyright (C) 2007-2008 Marvell Semiconductor |
21 | * Lennert Buytenhek <buytenh@marvell.com> | |
22 | * | |
1da177e4 LT |
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 | */ | |
a779d38c | 37 | |
7542db8b JP |
38 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
39 | ||
1da177e4 LT |
40 | #include <linux/init.h> |
41 | #include <linux/dma-mapping.h> | |
b6298c22 | 42 | #include <linux/in.h> |
c3efab8e | 43 | #include <linux/ip.h> |
1da177e4 LT |
44 | #include <linux/tcp.h> |
45 | #include <linux/udp.h> | |
46 | #include <linux/etherdevice.h> | |
1da177e4 LT |
47 | #include <linux/delay.h> |
48 | #include <linux/ethtool.h> | |
d052d1be | 49 | #include <linux/platform_device.h> |
fbd6a754 LB |
50 | #include <linux/module.h> |
51 | #include <linux/kernel.h> | |
52 | #include <linux/spinlock.h> | |
53 | #include <linux/workqueue.h> | |
ed94493f | 54 | #include <linux/phy.h> |
fbd6a754 | 55 | #include <linux/mv643xx_eth.h> |
10a9948d LB |
56 | #include <linux/io.h> |
57 | #include <linux/types.h> | |
eaf5d590 | 58 | #include <linux/inet_lro.h> |
5a0e3ad6 | 59 | #include <linux/slab.h> |
452503eb | 60 | #include <linux/clk.h> |
fbd6a754 | 61 | |
e5371493 | 62 | static char mv643xx_eth_driver_name[] = "mv643xx_eth"; |
042af53c | 63 | static char mv643xx_eth_driver_version[] = "1.4"; |
c9df406f | 64 | |
fbd6a754 | 65 | |
fbd6a754 LB |
66 | /* |
67 | * Registers shared between all ports. | |
68 | */ | |
3cb4667c LB |
69 | #define PHY_ADDR 0x0000 |
70 | #define SMI_REG 0x0004 | |
45c5d3bc LB |
71 | #define SMI_BUSY 0x10000000 |
72 | #define SMI_READ_VALID 0x08000000 | |
73 | #define SMI_OPCODE_READ 0x04000000 | |
74 | #define SMI_OPCODE_WRITE 0x00000000 | |
75 | #define ERR_INT_CAUSE 0x0080 | |
76 | #define ERR_INT_SMI_DONE 0x00000010 | |
77 | #define ERR_INT_MASK 0x0084 | |
3cb4667c LB |
78 | #define WINDOW_BASE(w) (0x0200 + ((w) << 3)) |
79 | #define WINDOW_SIZE(w) (0x0204 + ((w) << 3)) | |
80 | #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2)) | |
81 | #define WINDOW_BAR_ENABLE 0x0290 | |
82 | #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4)) | |
fbd6a754 LB |
83 | |
84 | /* | |
37a6084f LB |
85 | * Main per-port registers. These live at offset 0x0400 for |
86 | * port #0, 0x0800 for port #1, and 0x0c00 for port #2. | |
fbd6a754 | 87 | */ |
37a6084f | 88 | #define PORT_CONFIG 0x0000 |
d9a073ea | 89 | #define UNICAST_PROMISCUOUS_MODE 0x00000001 |
37a6084f LB |
90 | #define PORT_CONFIG_EXT 0x0004 |
91 | #define MAC_ADDR_LOW 0x0014 | |
92 | #define MAC_ADDR_HIGH 0x0018 | |
93 | #define SDMA_CONFIG 0x001c | |
becfad97 LB |
94 | #define TX_BURST_SIZE_16_64BIT 0x01000000 |
95 | #define TX_BURST_SIZE_4_64BIT 0x00800000 | |
96 | #define BLM_TX_NO_SWAP 0x00000020 | |
97 | #define BLM_RX_NO_SWAP 0x00000010 | |
98 | #define RX_BURST_SIZE_16_64BIT 0x00000008 | |
99 | #define RX_BURST_SIZE_4_64BIT 0x00000004 | |
37a6084f | 100 | #define PORT_SERIAL_CONTROL 0x003c |
becfad97 LB |
101 | #define SET_MII_SPEED_TO_100 0x01000000 |
102 | #define SET_GMII_SPEED_TO_1000 0x00800000 | |
103 | #define SET_FULL_DUPLEX_MODE 0x00200000 | |
104 | #define MAX_RX_PACKET_9700BYTE 0x000a0000 | |
105 | #define DISABLE_AUTO_NEG_SPEED_GMII 0x00002000 | |
106 | #define DO_NOT_FORCE_LINK_FAIL 0x00000400 | |
107 | #define SERIAL_PORT_CONTROL_RESERVED 0x00000200 | |
108 | #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL 0x00000008 | |
109 | #define DISABLE_AUTO_NEG_FOR_DUPLEX 0x00000004 | |
110 | #define FORCE_LINK_PASS 0x00000002 | |
111 | #define SERIAL_PORT_ENABLE 0x00000001 | |
37a6084f | 112 | #define PORT_STATUS 0x0044 |
a2a41689 | 113 | #define TX_FIFO_EMPTY 0x00000400 |
ae9ae064 | 114 | #define TX_IN_PROGRESS 0x00000080 |
2f7eb47a LB |
115 | #define PORT_SPEED_MASK 0x00000030 |
116 | #define PORT_SPEED_1000 0x00000010 | |
117 | #define PORT_SPEED_100 0x00000020 | |
118 | #define PORT_SPEED_10 0x00000000 | |
119 | #define FLOW_CONTROL_ENABLED 0x00000008 | |
120 | #define FULL_DUPLEX 0x00000004 | |
81600eea | 121 | #define LINK_UP 0x00000002 |
37a6084f LB |
122 | #define TXQ_COMMAND 0x0048 |
123 | #define TXQ_FIX_PRIO_CONF 0x004c | |
124 | #define TX_BW_RATE 0x0050 | |
125 | #define TX_BW_MTU 0x0058 | |
126 | #define TX_BW_BURST 0x005c | |
127 | #define INT_CAUSE 0x0060 | |
226bb6b7 | 128 | #define INT_TX_END 0x07f80000 |
e0ca8410 | 129 | #define INT_TX_END_0 0x00080000 |
befefe21 | 130 | #define INT_RX 0x000003fc |
e0ca8410 | 131 | #define INT_RX_0 0x00000004 |
073a345c | 132 | #define INT_EXT 0x00000002 |
37a6084f | 133 | #define INT_CAUSE_EXT 0x0064 |
befefe21 LB |
134 | #define INT_EXT_LINK_PHY 0x00110000 |
135 | #define INT_EXT_TX 0x000000ff | |
37a6084f LB |
136 | #define INT_MASK 0x0068 |
137 | #define INT_MASK_EXT 0x006c | |
138 | #define TX_FIFO_URGENT_THRESHOLD 0x0074 | |
302476c9 PZ |
139 | #define RX_DISCARD_FRAME_CNT 0x0084 |
140 | #define RX_OVERRUN_FRAME_CNT 0x0088 | |
37a6084f LB |
141 | #define TXQ_FIX_PRIO_CONF_MOVED 0x00dc |
142 | #define TX_BW_RATE_MOVED 0x00e0 | |
143 | #define TX_BW_MTU_MOVED 0x00e8 | |
144 | #define TX_BW_BURST_MOVED 0x00ec | |
145 | #define RXQ_CURRENT_DESC_PTR(q) (0x020c + ((q) << 4)) | |
146 | #define RXQ_COMMAND 0x0280 | |
147 | #define TXQ_CURRENT_DESC_PTR(q) (0x02c0 + ((q) << 2)) | |
148 | #define TXQ_BW_TOKENS(q) (0x0300 + ((q) << 4)) | |
149 | #define TXQ_BW_CONF(q) (0x0304 + ((q) << 4)) | |
150 | #define TXQ_BW_WRR_CONF(q) (0x0308 + ((q) << 4)) | |
151 | ||
152 | /* | |
153 | * Misc per-port registers. | |
154 | */ | |
3cb4667c LB |
155 | #define MIB_COUNTERS(p) (0x1000 + ((p) << 7)) |
156 | #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10)) | |
157 | #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10)) | |
158 | #define UNICAST_TABLE(p) (0x1600 + ((p) << 10)) | |
fbd6a754 | 159 | |
2679a550 LB |
160 | |
161 | /* | |
becfad97 | 162 | * SDMA configuration register default value. |
2679a550 | 163 | */ |
fbd6a754 LB |
164 | #if defined(__BIG_ENDIAN) |
165 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ | |
e0c6ef93 LB |
166 | (RX_BURST_SIZE_4_64BIT | \ |
167 | TX_BURST_SIZE_4_64BIT) | |
fbd6a754 LB |
168 | #elif defined(__LITTLE_ENDIAN) |
169 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ | |
e0c6ef93 LB |
170 | (RX_BURST_SIZE_4_64BIT | \ |
171 | BLM_RX_NO_SWAP | \ | |
172 | BLM_TX_NO_SWAP | \ | |
173 | TX_BURST_SIZE_4_64BIT) | |
fbd6a754 LB |
174 | #else |
175 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined | |
176 | #endif | |
177 | ||
2beff77b LB |
178 | |
179 | /* | |
becfad97 | 180 | * Misc definitions. |
2beff77b | 181 | */ |
becfad97 LB |
182 | #define DEFAULT_RX_QUEUE_SIZE 128 |
183 | #define DEFAULT_TX_QUEUE_SIZE 256 | |
7fd96ce4 | 184 | #define SKB_DMA_REALIGN ((PAGE_SIZE - NET_SKB_PAD) % SMP_CACHE_BYTES) |
fbd6a754 | 185 | |
fbd6a754 | 186 | |
7ca72a3b LB |
187 | /* |
188 | * RX/TX descriptors. | |
fbd6a754 LB |
189 | */ |
190 | #if defined(__BIG_ENDIAN) | |
cc9754b3 | 191 | struct rx_desc { |
fbd6a754 LB |
192 | u16 byte_cnt; /* Descriptor buffer byte count */ |
193 | u16 buf_size; /* Buffer size */ | |
194 | u32 cmd_sts; /* Descriptor command status */ | |
195 | u32 next_desc_ptr; /* Next descriptor pointer */ | |
196 | u32 buf_ptr; /* Descriptor buffer pointer */ | |
197 | }; | |
198 | ||
cc9754b3 | 199 | struct tx_desc { |
fbd6a754 LB |
200 | u16 byte_cnt; /* buffer byte count */ |
201 | u16 l4i_chk; /* CPU provided TCP checksum */ | |
202 | u32 cmd_sts; /* Command/status field */ | |
203 | u32 next_desc_ptr; /* Pointer to next descriptor */ | |
204 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ | |
205 | }; | |
206 | #elif defined(__LITTLE_ENDIAN) | |
cc9754b3 | 207 | struct rx_desc { |
fbd6a754 LB |
208 | u32 cmd_sts; /* Descriptor command status */ |
209 | u16 buf_size; /* Buffer size */ | |
210 | u16 byte_cnt; /* Descriptor buffer byte count */ | |
211 | u32 buf_ptr; /* Descriptor buffer pointer */ | |
212 | u32 next_desc_ptr; /* Next descriptor pointer */ | |
213 | }; | |
214 | ||
cc9754b3 | 215 | struct tx_desc { |
fbd6a754 LB |
216 | u32 cmd_sts; /* Command/status field */ |
217 | u16 l4i_chk; /* CPU provided TCP checksum */ | |
218 | u16 byte_cnt; /* buffer byte count */ | |
219 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ | |
220 | u32 next_desc_ptr; /* Pointer to next descriptor */ | |
221 | }; | |
222 | #else | |
223 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined | |
224 | #endif | |
225 | ||
7ca72a3b | 226 | /* RX & TX descriptor command */ |
cc9754b3 | 227 | #define BUFFER_OWNED_BY_DMA 0x80000000 |
7ca72a3b LB |
228 | |
229 | /* RX & TX descriptor status */ | |
cc9754b3 | 230 | #define ERROR_SUMMARY 0x00000001 |
7ca72a3b LB |
231 | |
232 | /* RX descriptor status */ | |
cc9754b3 LB |
233 | #define LAYER_4_CHECKSUM_OK 0x40000000 |
234 | #define RX_ENABLE_INTERRUPT 0x20000000 | |
235 | #define RX_FIRST_DESC 0x08000000 | |
236 | #define RX_LAST_DESC 0x04000000 | |
eaf5d590 LB |
237 | #define RX_IP_HDR_OK 0x02000000 |
238 | #define RX_PKT_IS_IPV4 0x01000000 | |
239 | #define RX_PKT_IS_ETHERNETV2 0x00800000 | |
240 | #define RX_PKT_LAYER4_TYPE_MASK 0x00600000 | |
241 | #define RX_PKT_LAYER4_TYPE_TCP_IPV4 0x00000000 | |
242 | #define RX_PKT_IS_VLAN_TAGGED 0x00080000 | |
7ca72a3b LB |
243 | |
244 | /* TX descriptor command */ | |
cc9754b3 LB |
245 | #define TX_ENABLE_INTERRUPT 0x00800000 |
246 | #define GEN_CRC 0x00400000 | |
247 | #define TX_FIRST_DESC 0x00200000 | |
248 | #define TX_LAST_DESC 0x00100000 | |
249 | #define ZERO_PADDING 0x00080000 | |
250 | #define GEN_IP_V4_CHECKSUM 0x00040000 | |
251 | #define GEN_TCP_UDP_CHECKSUM 0x00020000 | |
252 | #define UDP_FRAME 0x00010000 | |
e32b6617 LB |
253 | #define MAC_HDR_EXTRA_4_BYTES 0x00008000 |
254 | #define MAC_HDR_EXTRA_8_BYTES 0x00000200 | |
7ca72a3b | 255 | |
cc9754b3 | 256 | #define TX_IHL_SHIFT 11 |
7ca72a3b LB |
257 | |
258 | ||
c9df406f | 259 | /* global *******************************************************************/ |
e5371493 | 260 | struct mv643xx_eth_shared_private { |
fc32b0e2 LB |
261 | /* |
262 | * Ethernet controller base address. | |
263 | */ | |
cc9754b3 | 264 | void __iomem *base; |
c9df406f | 265 | |
fc0eb9f2 LB |
266 | /* |
267 | * Points at the right SMI instance to use. | |
268 | */ | |
269 | struct mv643xx_eth_shared_private *smi; | |
270 | ||
fc32b0e2 | 271 | /* |
ed94493f | 272 | * Provides access to local SMI interface. |
fc32b0e2 | 273 | */ |
298cf9be | 274 | struct mii_bus *smi_bus; |
c9df406f | 275 | |
45c5d3bc LB |
276 | /* |
277 | * If we have access to the error interrupt pin (which is | |
278 | * somewhat misnamed as it not only reflects internal errors | |
279 | * but also reflects SMI completion), use that to wait for | |
280 | * SMI access completion instead of polling the SMI busy bit. | |
281 | */ | |
282 | int err_interrupt; | |
283 | wait_queue_head_t smi_busy_wait; | |
284 | ||
fc32b0e2 LB |
285 | /* |
286 | * Per-port MBUS window access register value. | |
287 | */ | |
c9df406f LB |
288 | u32 win_protect; |
289 | ||
fc32b0e2 LB |
290 | /* |
291 | * Hardware-specific parameters. | |
292 | */ | |
773fc3ee | 293 | int extended_rx_coal_limit; |
457b1d5a | 294 | int tx_bw_control; |
9b2c2ff7 | 295 | int tx_csum_limit; |
452503eb | 296 | |
c9df406f LB |
297 | }; |
298 | ||
457b1d5a LB |
299 | #define TX_BW_CONTROL_ABSENT 0 |
300 | #define TX_BW_CONTROL_OLD_LAYOUT 1 | |
301 | #define TX_BW_CONTROL_NEW_LAYOUT 2 | |
302 | ||
e7d2f4db LB |
303 | static int mv643xx_eth_open(struct net_device *dev); |
304 | static int mv643xx_eth_stop(struct net_device *dev); | |
305 | ||
c9df406f LB |
306 | |
307 | /* per-port *****************************************************************/ | |
e5371493 | 308 | struct mib_counters { |
fbd6a754 LB |
309 | u64 good_octets_received; |
310 | u32 bad_octets_received; | |
311 | u32 internal_mac_transmit_err; | |
312 | u32 good_frames_received; | |
313 | u32 bad_frames_received; | |
314 | u32 broadcast_frames_received; | |
315 | u32 multicast_frames_received; | |
316 | u32 frames_64_octets; | |
317 | u32 frames_65_to_127_octets; | |
318 | u32 frames_128_to_255_octets; | |
319 | u32 frames_256_to_511_octets; | |
320 | u32 frames_512_to_1023_octets; | |
321 | u32 frames_1024_to_max_octets; | |
322 | u64 good_octets_sent; | |
323 | u32 good_frames_sent; | |
324 | u32 excessive_collision; | |
325 | u32 multicast_frames_sent; | |
326 | u32 broadcast_frames_sent; | |
327 | u32 unrec_mac_control_received; | |
328 | u32 fc_sent; | |
329 | u32 good_fc_received; | |
330 | u32 bad_fc_received; | |
331 | u32 undersize_received; | |
332 | u32 fragments_received; | |
333 | u32 oversize_received; | |
334 | u32 jabber_received; | |
335 | u32 mac_receive_error; | |
336 | u32 bad_crc_event; | |
337 | u32 collision; | |
338 | u32 late_collision; | |
302476c9 PZ |
339 | /* Non MIB hardware counters */ |
340 | u32 rx_discard; | |
341 | u32 rx_overrun; | |
fbd6a754 LB |
342 | }; |
343 | ||
eaf5d590 LB |
344 | struct lro_counters { |
345 | u32 lro_aggregated; | |
346 | u32 lro_flushed; | |
347 | u32 lro_no_desc; | |
348 | }; | |
349 | ||
8a578111 | 350 | struct rx_queue { |
64da80a2 LB |
351 | int index; |
352 | ||
8a578111 LB |
353 | int rx_ring_size; |
354 | ||
355 | int rx_desc_count; | |
356 | int rx_curr_desc; | |
357 | int rx_used_desc; | |
358 | ||
359 | struct rx_desc *rx_desc_area; | |
360 | dma_addr_t rx_desc_dma; | |
361 | int rx_desc_area_size; | |
362 | struct sk_buff **rx_skb; | |
eaf5d590 | 363 | |
eaf5d590 LB |
364 | struct net_lro_mgr lro_mgr; |
365 | struct net_lro_desc lro_arr[8]; | |
8a578111 LB |
366 | }; |
367 | ||
13d64285 | 368 | struct tx_queue { |
3d6b35bc LB |
369 | int index; |
370 | ||
13d64285 | 371 | int tx_ring_size; |
fbd6a754 | 372 | |
13d64285 LB |
373 | int tx_desc_count; |
374 | int tx_curr_desc; | |
375 | int tx_used_desc; | |
fbd6a754 | 376 | |
5daffe94 | 377 | struct tx_desc *tx_desc_area; |
fbd6a754 LB |
378 | dma_addr_t tx_desc_dma; |
379 | int tx_desc_area_size; | |
99ab08e0 LB |
380 | |
381 | struct sk_buff_head tx_skb; | |
8fd89211 LB |
382 | |
383 | unsigned long tx_packets; | |
384 | unsigned long tx_bytes; | |
385 | unsigned long tx_dropped; | |
13d64285 LB |
386 | }; |
387 | ||
388 | struct mv643xx_eth_private { | |
389 | struct mv643xx_eth_shared_private *shared; | |
37a6084f | 390 | void __iomem *base; |
fc32b0e2 | 391 | int port_num; |
13d64285 | 392 | |
fc32b0e2 | 393 | struct net_device *dev; |
fbd6a754 | 394 | |
ed94493f | 395 | struct phy_device *phy; |
fbd6a754 | 396 | |
4ff3495a LB |
397 | struct timer_list mib_counters_timer; |
398 | spinlock_t mib_counters_lock; | |
fc32b0e2 | 399 | struct mib_counters mib_counters; |
4ff3495a | 400 | |
eaf5d590 LB |
401 | struct lro_counters lro_counters; |
402 | ||
fc32b0e2 | 403 | struct work_struct tx_timeout_task; |
8a578111 | 404 | |
1fa38c58 | 405 | struct napi_struct napi; |
e0ca8410 | 406 | u32 int_mask; |
1319ebad | 407 | u8 oom; |
1fa38c58 LB |
408 | u8 work_link; |
409 | u8 work_tx; | |
410 | u8 work_tx_end; | |
411 | u8 work_rx; | |
412 | u8 work_rx_refill; | |
1fa38c58 | 413 | |
2bcb4b0f LB |
414 | int skb_size; |
415 | struct sk_buff_head rx_recycle; | |
416 | ||
8a578111 LB |
417 | /* |
418 | * RX state. | |
419 | */ | |
e7d2f4db | 420 | int rx_ring_size; |
8a578111 LB |
421 | unsigned long rx_desc_sram_addr; |
422 | int rx_desc_sram_size; | |
f7981c1c | 423 | int rxq_count; |
2257e05c | 424 | struct timer_list rx_oom; |
64da80a2 | 425 | struct rx_queue rxq[8]; |
13d64285 LB |
426 | |
427 | /* | |
428 | * TX state. | |
429 | */ | |
e7d2f4db | 430 | int tx_ring_size; |
13d64285 LB |
431 | unsigned long tx_desc_sram_addr; |
432 | int tx_desc_sram_size; | |
f7981c1c | 433 | int txq_count; |
3d6b35bc | 434 | struct tx_queue txq[8]; |
452503eb AL |
435 | |
436 | /* | |
437 | * Hardware-specific parameters. | |
438 | */ | |
9a43a026 | 439 | #if defined(CONFIG_HAVE_CLK) |
452503eb | 440 | struct clk *clk; |
9a43a026 | 441 | #endif |
452503eb | 442 | unsigned int t_clk; |
fbd6a754 | 443 | }; |
1da177e4 | 444 | |
fbd6a754 | 445 | |
c9df406f | 446 | /* port register accessors **************************************************/ |
e5371493 | 447 | static inline u32 rdl(struct mv643xx_eth_private *mp, int offset) |
c9df406f | 448 | { |
cc9754b3 | 449 | return readl(mp->shared->base + offset); |
c9df406f | 450 | } |
fbd6a754 | 451 | |
37a6084f LB |
452 | static inline u32 rdlp(struct mv643xx_eth_private *mp, int offset) |
453 | { | |
454 | return readl(mp->base + offset); | |
455 | } | |
456 | ||
e5371493 | 457 | static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data) |
c9df406f | 458 | { |
cc9754b3 | 459 | writel(data, mp->shared->base + offset); |
c9df406f | 460 | } |
fbd6a754 | 461 | |
37a6084f LB |
462 | static inline void wrlp(struct mv643xx_eth_private *mp, int offset, u32 data) |
463 | { | |
464 | writel(data, mp->base + offset); | |
465 | } | |
466 | ||
fbd6a754 | 467 | |
c9df406f | 468 | /* rxq/txq helper functions *************************************************/ |
8a578111 | 469 | static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq) |
c9df406f | 470 | { |
64da80a2 | 471 | return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]); |
c9df406f | 472 | } |
fbd6a754 | 473 | |
13d64285 LB |
474 | static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq) |
475 | { | |
3d6b35bc | 476 | return container_of(txq, struct mv643xx_eth_private, txq[txq->index]); |
13d64285 LB |
477 | } |
478 | ||
8a578111 | 479 | static void rxq_enable(struct rx_queue *rxq) |
c9df406f | 480 | { |
8a578111 | 481 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
37a6084f | 482 | wrlp(mp, RXQ_COMMAND, 1 << rxq->index); |
8a578111 | 483 | } |
1da177e4 | 484 | |
8a578111 LB |
485 | static void rxq_disable(struct rx_queue *rxq) |
486 | { | |
487 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); | |
64da80a2 | 488 | u8 mask = 1 << rxq->index; |
1da177e4 | 489 | |
37a6084f LB |
490 | wrlp(mp, RXQ_COMMAND, mask << 8); |
491 | while (rdlp(mp, RXQ_COMMAND) & mask) | |
8a578111 | 492 | udelay(10); |
c9df406f LB |
493 | } |
494 | ||
6b368f68 LB |
495 | static void txq_reset_hw_ptr(struct tx_queue *txq) |
496 | { | |
497 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
6b368f68 LB |
498 | u32 addr; |
499 | ||
500 | addr = (u32)txq->tx_desc_dma; | |
501 | addr += txq->tx_curr_desc * sizeof(struct tx_desc); | |
37a6084f | 502 | wrlp(mp, TXQ_CURRENT_DESC_PTR(txq->index), addr); |
6b368f68 LB |
503 | } |
504 | ||
13d64285 | 505 | static void txq_enable(struct tx_queue *txq) |
1da177e4 | 506 | { |
13d64285 | 507 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
37a6084f | 508 | wrlp(mp, TXQ_COMMAND, 1 << txq->index); |
1da177e4 LT |
509 | } |
510 | ||
13d64285 | 511 | static void txq_disable(struct tx_queue *txq) |
1da177e4 | 512 | { |
13d64285 | 513 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
3d6b35bc | 514 | u8 mask = 1 << txq->index; |
c9df406f | 515 | |
37a6084f LB |
516 | wrlp(mp, TXQ_COMMAND, mask << 8); |
517 | while (rdlp(mp, TXQ_COMMAND) & mask) | |
13d64285 LB |
518 | udelay(10); |
519 | } | |
520 | ||
1fa38c58 | 521 | static void txq_maybe_wake(struct tx_queue *txq) |
13d64285 LB |
522 | { |
523 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
e5ef1de1 | 524 | struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index); |
3d6b35bc | 525 | |
8fd89211 LB |
526 | if (netif_tx_queue_stopped(nq)) { |
527 | __netif_tx_lock(nq, smp_processor_id()); | |
528 | if (txq->tx_ring_size - txq->tx_desc_count >= MAX_SKB_FRAGS + 1) | |
529 | netif_tx_wake_queue(nq); | |
530 | __netif_tx_unlock(nq); | |
531 | } | |
1da177e4 LT |
532 | } |
533 | ||
c9df406f | 534 | |
1fa38c58 | 535 | /* rx napi ******************************************************************/ |
eaf5d590 LB |
536 | static int |
537 | mv643xx_get_skb_header(struct sk_buff *skb, void **iphdr, void **tcph, | |
538 | u64 *hdr_flags, void *priv) | |
539 | { | |
540 | unsigned long cmd_sts = (unsigned long)priv; | |
541 | ||
542 | /* | |
543 | * Make sure that this packet is Ethernet II, is not VLAN | |
544 | * tagged, is IPv4, has a valid IP header, and is TCP. | |
545 | */ | |
546 | if ((cmd_sts & (RX_IP_HDR_OK | RX_PKT_IS_IPV4 | | |
547 | RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_MASK | | |
548 | RX_PKT_IS_VLAN_TAGGED)) != | |
549 | (RX_IP_HDR_OK | RX_PKT_IS_IPV4 | | |
550 | RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_TCP_IPV4)) | |
551 | return -1; | |
552 | ||
553 | skb_reset_network_header(skb); | |
554 | skb_set_transport_header(skb, ip_hdrlen(skb)); | |
555 | *iphdr = ip_hdr(skb); | |
556 | *tcph = tcp_hdr(skb); | |
557 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
558 | ||
559 | return 0; | |
560 | } | |
eaf5d590 | 561 | |
8a578111 | 562 | static int rxq_process(struct rx_queue *rxq, int budget) |
1da177e4 | 563 | { |
8a578111 LB |
564 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
565 | struct net_device_stats *stats = &mp->dev->stats; | |
eaf5d590 | 566 | int lro_flush_needed; |
8a578111 | 567 | int rx; |
1da177e4 | 568 | |
eaf5d590 | 569 | lro_flush_needed = 0; |
8a578111 | 570 | rx = 0; |
9e1f3772 | 571 | while (rx < budget && rxq->rx_desc_count) { |
fc32b0e2 | 572 | struct rx_desc *rx_desc; |
96587661 | 573 | unsigned int cmd_sts; |
fc32b0e2 | 574 | struct sk_buff *skb; |
6b8f90c2 | 575 | u16 byte_cnt; |
ff561eef | 576 | |
8a578111 | 577 | rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc]; |
1da177e4 | 578 | |
96587661 | 579 | cmd_sts = rx_desc->cmd_sts; |
2257e05c | 580 | if (cmd_sts & BUFFER_OWNED_BY_DMA) |
96587661 | 581 | break; |
96587661 | 582 | rmb(); |
1da177e4 | 583 | |
8a578111 LB |
584 | skb = rxq->rx_skb[rxq->rx_curr_desc]; |
585 | rxq->rx_skb[rxq->rx_curr_desc] = NULL; | |
ff561eef | 586 | |
9da78745 LB |
587 | rxq->rx_curr_desc++; |
588 | if (rxq->rx_curr_desc == rxq->rx_ring_size) | |
589 | rxq->rx_curr_desc = 0; | |
ff561eef | 590 | |
eb0519b5 | 591 | dma_unmap_single(mp->dev->dev.parent, rx_desc->buf_ptr, |
abe78717 | 592 | rx_desc->buf_size, DMA_FROM_DEVICE); |
8a578111 LB |
593 | rxq->rx_desc_count--; |
594 | rx++; | |
b1dd9ca1 | 595 | |
1fa38c58 LB |
596 | mp->work_rx_refill |= 1 << rxq->index; |
597 | ||
6b8f90c2 LB |
598 | byte_cnt = rx_desc->byte_cnt; |
599 | ||
468d09f8 DF |
600 | /* |
601 | * Update statistics. | |
fc32b0e2 LB |
602 | * |
603 | * Note that the descriptor byte count includes 2 dummy | |
604 | * bytes automatically inserted by the hardware at the | |
605 | * start of the packet (which we don't count), and a 4 | |
606 | * byte CRC at the end of the packet (which we do count). | |
468d09f8 | 607 | */ |
1da177e4 | 608 | stats->rx_packets++; |
6b8f90c2 | 609 | stats->rx_bytes += byte_cnt - 2; |
96587661 | 610 | |
1da177e4 | 611 | /* |
fc32b0e2 LB |
612 | * In case we received a packet without first / last bits |
613 | * on, or the error summary bit is set, the packet needs | |
614 | * to be dropped. | |
1da177e4 | 615 | */ |
f61e5547 LB |
616 | if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC | ERROR_SUMMARY)) |
617 | != (RX_FIRST_DESC | RX_LAST_DESC)) | |
618 | goto err; | |
619 | ||
620 | /* | |
621 | * The -4 is for the CRC in the trailer of the | |
622 | * received packet | |
623 | */ | |
624 | skb_put(skb, byte_cnt - 2 - 4); | |
625 | ||
626 | if (cmd_sts & LAYER_4_CHECKSUM_OK) | |
627 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
628 | skb->protocol = eth_type_trans(skb, mp->dev); | |
eaf5d590 | 629 | |
eaf5d590 LB |
630 | if (skb->dev->features & NETIF_F_LRO && |
631 | skb->ip_summed == CHECKSUM_UNNECESSARY) { | |
632 | lro_receive_skb(&rxq->lro_mgr, skb, (void *)cmd_sts); | |
633 | lro_flush_needed = 1; | |
634 | } else | |
eaf5d590 | 635 | netif_receive_skb(skb); |
f61e5547 LB |
636 | |
637 | continue; | |
638 | ||
639 | err: | |
640 | stats->rx_dropped++; | |
641 | ||
642 | if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != | |
643 | (RX_FIRST_DESC | RX_LAST_DESC)) { | |
644 | if (net_ratelimit()) | |
7542db8b JP |
645 | netdev_err(mp->dev, |
646 | "received packet spanning multiple descriptors\n"); | |
1da177e4 | 647 | } |
f61e5547 LB |
648 | |
649 | if (cmd_sts & ERROR_SUMMARY) | |
650 | stats->rx_errors++; | |
651 | ||
652 | dev_kfree_skb(skb); | |
1da177e4 | 653 | } |
fc32b0e2 | 654 | |
eaf5d590 LB |
655 | if (lro_flush_needed) |
656 | lro_flush_all(&rxq->lro_mgr); | |
eaf5d590 | 657 | |
1fa38c58 LB |
658 | if (rx < budget) |
659 | mp->work_rx &= ~(1 << rxq->index); | |
660 | ||
8a578111 | 661 | return rx; |
1da177e4 LT |
662 | } |
663 | ||
1fa38c58 | 664 | static int rxq_refill(struct rx_queue *rxq, int budget) |
d0412d96 | 665 | { |
1fa38c58 | 666 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
1fa38c58 | 667 | int refilled; |
8a578111 | 668 | |
1fa38c58 LB |
669 | refilled = 0; |
670 | while (refilled < budget && rxq->rx_desc_count < rxq->rx_ring_size) { | |
671 | struct sk_buff *skb; | |
1fa38c58 | 672 | int rx; |
53771522 | 673 | struct rx_desc *rx_desc; |
530e557a | 674 | int size; |
d0412d96 | 675 | |
2bcb4b0f LB |
676 | skb = __skb_dequeue(&mp->rx_recycle); |
677 | if (skb == NULL) | |
c056b734 | 678 | skb = netdev_alloc_skb(mp->dev, mp->skb_size); |
2bcb4b0f | 679 | |
1fa38c58 | 680 | if (skb == NULL) { |
1319ebad | 681 | mp->oom = 1; |
1fa38c58 LB |
682 | goto oom; |
683 | } | |
d0412d96 | 684 | |
7fd96ce4 LB |
685 | if (SKB_DMA_REALIGN) |
686 | skb_reserve(skb, SKB_DMA_REALIGN); | |
2257e05c | 687 | |
1fa38c58 LB |
688 | refilled++; |
689 | rxq->rx_desc_count++; | |
c9df406f | 690 | |
1fa38c58 LB |
691 | rx = rxq->rx_used_desc++; |
692 | if (rxq->rx_used_desc == rxq->rx_ring_size) | |
693 | rxq->rx_used_desc = 0; | |
2257e05c | 694 | |
53771522 LB |
695 | rx_desc = rxq->rx_desc_area + rx; |
696 | ||
530e557a | 697 | size = skb->end - skb->data; |
eb0519b5 | 698 | rx_desc->buf_ptr = dma_map_single(mp->dev->dev.parent, |
530e557a | 699 | skb->data, size, |
eb0519b5 | 700 | DMA_FROM_DEVICE); |
530e557a | 701 | rx_desc->buf_size = size; |
1fa38c58 LB |
702 | rxq->rx_skb[rx] = skb; |
703 | wmb(); | |
53771522 | 704 | rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT; |
1fa38c58 | 705 | wmb(); |
2257e05c | 706 | |
1fa38c58 LB |
707 | /* |
708 | * The hardware automatically prepends 2 bytes of | |
709 | * dummy data to each received packet, so that the | |
710 | * IP header ends up 16-byte aligned. | |
711 | */ | |
712 | skb_reserve(skb, 2); | |
713 | } | |
714 | ||
715 | if (refilled < budget) | |
716 | mp->work_rx_refill &= ~(1 << rxq->index); | |
717 | ||
718 | oom: | |
719 | return refilled; | |
d0412d96 JC |
720 | } |
721 | ||
c9df406f LB |
722 | |
723 | /* tx ***********************************************************************/ | |
c9df406f | 724 | static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) |
1da177e4 | 725 | { |
13d64285 | 726 | int frag; |
1da177e4 | 727 | |
c9df406f | 728 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { |
9e903e08 ED |
729 | const skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag]; |
730 | ||
731 | if (skb_frag_size(fragp) <= 8 && fragp->page_offset & 7) | |
c9df406f | 732 | return 1; |
1da177e4 | 733 | } |
13d64285 | 734 | |
c9df406f LB |
735 | return 0; |
736 | } | |
7303fde8 | 737 | |
13d64285 | 738 | static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) |
c9df406f | 739 | { |
eb0519b5 | 740 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
13d64285 | 741 | int nr_frags = skb_shinfo(skb)->nr_frags; |
c9df406f | 742 | int frag; |
1da177e4 | 743 | |
13d64285 LB |
744 | for (frag = 0; frag < nr_frags; frag++) { |
745 | skb_frag_t *this_frag; | |
746 | int tx_index; | |
747 | struct tx_desc *desc; | |
748 | ||
749 | this_frag = &skb_shinfo(skb)->frags[frag]; | |
66823b92 LB |
750 | tx_index = txq->tx_curr_desc++; |
751 | if (txq->tx_curr_desc == txq->tx_ring_size) | |
752 | txq->tx_curr_desc = 0; | |
13d64285 LB |
753 | desc = &txq->tx_desc_area[tx_index]; |
754 | ||
755 | /* | |
756 | * The last fragment will generate an interrupt | |
757 | * which will free the skb on TX completion. | |
758 | */ | |
759 | if (frag == nr_frags - 1) { | |
760 | desc->cmd_sts = BUFFER_OWNED_BY_DMA | | |
761 | ZERO_PADDING | TX_LAST_DESC | | |
762 | TX_ENABLE_INTERRUPT; | |
13d64285 LB |
763 | } else { |
764 | desc->cmd_sts = BUFFER_OWNED_BY_DMA; | |
13d64285 LB |
765 | } |
766 | ||
c9df406f | 767 | desc->l4i_chk = 0; |
9e903e08 | 768 | desc->byte_cnt = skb_frag_size(this_frag); |
f106358b IC |
769 | desc->buf_ptr = skb_frag_dma_map(mp->dev->dev.parent, |
770 | this_frag, 0, | |
9e903e08 | 771 | skb_frag_size(this_frag), |
f106358b | 772 | DMA_TO_DEVICE); |
c9df406f | 773 | } |
1da177e4 LT |
774 | } |
775 | ||
c9df406f LB |
776 | static inline __be16 sum16_as_be(__sum16 sum) |
777 | { | |
778 | return (__force __be16)sum; | |
779 | } | |
1da177e4 | 780 | |
4df89bd5 | 781 | static int txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb) |
1da177e4 | 782 | { |
8fa89bf5 | 783 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
13d64285 | 784 | int nr_frags = skb_shinfo(skb)->nr_frags; |
c9df406f | 785 | int tx_index; |
cc9754b3 | 786 | struct tx_desc *desc; |
c9df406f | 787 | u32 cmd_sts; |
4df89bd5 | 788 | u16 l4i_chk; |
c9df406f | 789 | int length; |
1da177e4 | 790 | |
cc9754b3 | 791 | cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA; |
4df89bd5 | 792 | l4i_chk = 0; |
c9df406f LB |
793 | |
794 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
9b2c2ff7 | 795 | int hdr_len; |
4df89bd5 | 796 | int tag_bytes; |
e32b6617 LB |
797 | |
798 | BUG_ON(skb->protocol != htons(ETH_P_IP) && | |
799 | skb->protocol != htons(ETH_P_8021Q)); | |
c9df406f | 800 | |
9b2c2ff7 SB |
801 | hdr_len = (void *)ip_hdr(skb) - (void *)skb->data; |
802 | tag_bytes = hdr_len - ETH_HLEN; | |
803 | if (skb->len - hdr_len > mp->shared->tx_csum_limit || | |
804 | unlikely(tag_bytes & ~12)) { | |
4df89bd5 LB |
805 | if (skb_checksum_help(skb) == 0) |
806 | goto no_csum; | |
807 | kfree_skb(skb); | |
808 | return 1; | |
809 | } | |
c9df406f | 810 | |
4df89bd5 | 811 | if (tag_bytes & 4) |
e32b6617 | 812 | cmd_sts |= MAC_HDR_EXTRA_4_BYTES; |
4df89bd5 | 813 | if (tag_bytes & 8) |
e32b6617 | 814 | cmd_sts |= MAC_HDR_EXTRA_8_BYTES; |
4df89bd5 LB |
815 | |
816 | cmd_sts |= GEN_TCP_UDP_CHECKSUM | | |
817 | GEN_IP_V4_CHECKSUM | | |
818 | ip_hdr(skb)->ihl << TX_IHL_SHIFT; | |
e32b6617 | 819 | |
c9df406f LB |
820 | switch (ip_hdr(skb)->protocol) { |
821 | case IPPROTO_UDP: | |
cc9754b3 | 822 | cmd_sts |= UDP_FRAME; |
4df89bd5 | 823 | l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); |
c9df406f LB |
824 | break; |
825 | case IPPROTO_TCP: | |
4df89bd5 | 826 | l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); |
c9df406f LB |
827 | break; |
828 | default: | |
829 | BUG(); | |
830 | } | |
831 | } else { | |
4df89bd5 | 832 | no_csum: |
c9df406f | 833 | /* Errata BTS #50, IHL must be 5 if no HW checksum */ |
cc9754b3 | 834 | cmd_sts |= 5 << TX_IHL_SHIFT; |
c9df406f LB |
835 | } |
836 | ||
66823b92 LB |
837 | tx_index = txq->tx_curr_desc++; |
838 | if (txq->tx_curr_desc == txq->tx_ring_size) | |
839 | txq->tx_curr_desc = 0; | |
4df89bd5 LB |
840 | desc = &txq->tx_desc_area[tx_index]; |
841 | ||
842 | if (nr_frags) { | |
843 | txq_submit_frag_skb(txq, skb); | |
844 | length = skb_headlen(skb); | |
845 | } else { | |
846 | cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT; | |
847 | length = skb->len; | |
848 | } | |
849 | ||
850 | desc->l4i_chk = l4i_chk; | |
851 | desc->byte_cnt = length; | |
eb0519b5 GP |
852 | desc->buf_ptr = dma_map_single(mp->dev->dev.parent, skb->data, |
853 | length, DMA_TO_DEVICE); | |
4df89bd5 | 854 | |
99ab08e0 LB |
855 | __skb_queue_tail(&txq->tx_skb, skb); |
856 | ||
3b182d7d RC |
857 | skb_tx_timestamp(skb); |
858 | ||
c9df406f LB |
859 | /* ensure all other descriptors are written before first cmd_sts */ |
860 | wmb(); | |
861 | desc->cmd_sts = cmd_sts; | |
862 | ||
1fa38c58 LB |
863 | /* clear TX_END status */ |
864 | mp->work_tx_end &= ~(1 << txq->index); | |
8fa89bf5 | 865 | |
c9df406f LB |
866 | /* ensure all descriptors are written before poking hardware */ |
867 | wmb(); | |
13d64285 | 868 | txq_enable(txq); |
c9df406f | 869 | |
13d64285 | 870 | txq->tx_desc_count += nr_frags + 1; |
4df89bd5 LB |
871 | |
872 | return 0; | |
1da177e4 | 873 | } |
1da177e4 | 874 | |
0ccfe64d | 875 | static netdev_tx_t mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 | 876 | { |
e5371493 | 877 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
73151ce3 | 878 | int length, queue; |
13d64285 | 879 | struct tx_queue *txq; |
e5ef1de1 | 880 | struct netdev_queue *nq; |
afdb57a2 | 881 | |
8fd89211 LB |
882 | queue = skb_get_queue_mapping(skb); |
883 | txq = mp->txq + queue; | |
884 | nq = netdev_get_tx_queue(dev, queue); | |
885 | ||
c9df406f | 886 | if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { |
8fd89211 | 887 | txq->tx_dropped++; |
7542db8b JP |
888 | netdev_printk(KERN_DEBUG, dev, |
889 | "failed to linearize skb with tiny unaligned fragment\n"); | |
c9df406f LB |
890 | return NETDEV_TX_BUSY; |
891 | } | |
892 | ||
17cd0a59 | 893 | if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) { |
e5ef1de1 | 894 | if (net_ratelimit()) |
7542db8b | 895 | netdev_err(dev, "tx queue full?!\n"); |
3d6b35bc LB |
896 | kfree_skb(skb); |
897 | return NETDEV_TX_OK; | |
c9df406f LB |
898 | } |
899 | ||
73151ce3 RC |
900 | length = skb->len; |
901 | ||
4df89bd5 LB |
902 | if (!txq_submit_skb(txq, skb)) { |
903 | int entries_left; | |
904 | ||
73151ce3 | 905 | txq->tx_bytes += length; |
4df89bd5 | 906 | txq->tx_packets++; |
c9df406f | 907 | |
4df89bd5 LB |
908 | entries_left = txq->tx_ring_size - txq->tx_desc_count; |
909 | if (entries_left < MAX_SKB_FRAGS + 1) | |
910 | netif_tx_stop_queue(nq); | |
911 | } | |
c9df406f | 912 | |
c9df406f | 913 | return NETDEV_TX_OK; |
1da177e4 LT |
914 | } |
915 | ||
c9df406f | 916 | |
1fa38c58 LB |
917 | /* tx napi ******************************************************************/ |
918 | static void txq_kick(struct tx_queue *txq) | |
919 | { | |
920 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
8fd89211 | 921 | struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index); |
1fa38c58 LB |
922 | u32 hw_desc_ptr; |
923 | u32 expected_ptr; | |
924 | ||
8fd89211 | 925 | __netif_tx_lock(nq, smp_processor_id()); |
1fa38c58 | 926 | |
37a6084f | 927 | if (rdlp(mp, TXQ_COMMAND) & (1 << txq->index)) |
1fa38c58 LB |
928 | goto out; |
929 | ||
37a6084f | 930 | hw_desc_ptr = rdlp(mp, TXQ_CURRENT_DESC_PTR(txq->index)); |
1fa38c58 LB |
931 | expected_ptr = (u32)txq->tx_desc_dma + |
932 | txq->tx_curr_desc * sizeof(struct tx_desc); | |
933 | ||
934 | if (hw_desc_ptr != expected_ptr) | |
935 | txq_enable(txq); | |
936 | ||
937 | out: | |
8fd89211 | 938 | __netif_tx_unlock(nq); |
1fa38c58 LB |
939 | |
940 | mp->work_tx_end &= ~(1 << txq->index); | |
941 | } | |
942 | ||
943 | static int txq_reclaim(struct tx_queue *txq, int budget, int force) | |
944 | { | |
945 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
8fd89211 | 946 | struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index); |
1fa38c58 LB |
947 | int reclaimed; |
948 | ||
8fd89211 | 949 | __netif_tx_lock(nq, smp_processor_id()); |
1fa38c58 LB |
950 | |
951 | reclaimed = 0; | |
952 | while (reclaimed < budget && txq->tx_desc_count > 0) { | |
953 | int tx_index; | |
954 | struct tx_desc *desc; | |
955 | u32 cmd_sts; | |
956 | struct sk_buff *skb; | |
1fa38c58 LB |
957 | |
958 | tx_index = txq->tx_used_desc; | |
959 | desc = &txq->tx_desc_area[tx_index]; | |
960 | cmd_sts = desc->cmd_sts; | |
961 | ||
962 | if (cmd_sts & BUFFER_OWNED_BY_DMA) { | |
963 | if (!force) | |
964 | break; | |
965 | desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA; | |
966 | } | |
967 | ||
968 | txq->tx_used_desc = tx_index + 1; | |
969 | if (txq->tx_used_desc == txq->tx_ring_size) | |
970 | txq->tx_used_desc = 0; | |
971 | ||
972 | reclaimed++; | |
973 | txq->tx_desc_count--; | |
974 | ||
99ab08e0 LB |
975 | skb = NULL; |
976 | if (cmd_sts & TX_LAST_DESC) | |
977 | skb = __skb_dequeue(&txq->tx_skb); | |
1fa38c58 LB |
978 | |
979 | if (cmd_sts & ERROR_SUMMARY) { | |
7542db8b | 980 | netdev_info(mp->dev, "tx error\n"); |
1fa38c58 LB |
981 | mp->dev->stats.tx_errors++; |
982 | } | |
983 | ||
a418950c | 984 | if (cmd_sts & TX_FIRST_DESC) { |
eb0519b5 | 985 | dma_unmap_single(mp->dev->dev.parent, desc->buf_ptr, |
a418950c LB |
986 | desc->byte_cnt, DMA_TO_DEVICE); |
987 | } else { | |
eb0519b5 | 988 | dma_unmap_page(mp->dev->dev.parent, desc->buf_ptr, |
a418950c LB |
989 | desc->byte_cnt, DMA_TO_DEVICE); |
990 | } | |
1fa38c58 | 991 | |
2bcb4b0f LB |
992 | if (skb != NULL) { |
993 | if (skb_queue_len(&mp->rx_recycle) < | |
e7d2f4db | 994 | mp->rx_ring_size && |
7fd96ce4 | 995 | skb_recycle_check(skb, mp->skb_size)) |
2bcb4b0f LB |
996 | __skb_queue_head(&mp->rx_recycle, skb); |
997 | else | |
998 | dev_kfree_skb(skb); | |
999 | } | |
1fa38c58 LB |
1000 | } |
1001 | ||
8fd89211 LB |
1002 | __netif_tx_unlock(nq); |
1003 | ||
1fa38c58 LB |
1004 | if (reclaimed < budget) |
1005 | mp->work_tx &= ~(1 << txq->index); | |
1006 | ||
1fa38c58 LB |
1007 | return reclaimed; |
1008 | } | |
1009 | ||
1010 | ||
89df5fdc LB |
1011 | /* tx rate control **********************************************************/ |
1012 | /* | |
1013 | * Set total maximum TX rate (shared by all TX queues for this port) | |
1014 | * to 'rate' bits per second, with a maximum burst of 'burst' bytes. | |
1015 | */ | |
1016 | static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst) | |
1017 | { | |
1018 | int token_rate; | |
1019 | int mtu; | |
1020 | int bucket_size; | |
1021 | ||
452503eb | 1022 | token_rate = ((rate / 1000) * 64) / (mp->t_clk / 1000); |
89df5fdc LB |
1023 | if (token_rate > 1023) |
1024 | token_rate = 1023; | |
1025 | ||
1026 | mtu = (mp->dev->mtu + 255) >> 8; | |
1027 | if (mtu > 63) | |
1028 | mtu = 63; | |
1029 | ||
1030 | bucket_size = (burst + 255) >> 8; | |
1031 | if (bucket_size > 65535) | |
1032 | bucket_size = 65535; | |
1033 | ||
457b1d5a LB |
1034 | switch (mp->shared->tx_bw_control) { |
1035 | case TX_BW_CONTROL_OLD_LAYOUT: | |
37a6084f LB |
1036 | wrlp(mp, TX_BW_RATE, token_rate); |
1037 | wrlp(mp, TX_BW_MTU, mtu); | |
1038 | wrlp(mp, TX_BW_BURST, bucket_size); | |
457b1d5a LB |
1039 | break; |
1040 | case TX_BW_CONTROL_NEW_LAYOUT: | |
37a6084f LB |
1041 | wrlp(mp, TX_BW_RATE_MOVED, token_rate); |
1042 | wrlp(mp, TX_BW_MTU_MOVED, mtu); | |
1043 | wrlp(mp, TX_BW_BURST_MOVED, bucket_size); | |
457b1d5a | 1044 | break; |
1e881592 | 1045 | } |
89df5fdc LB |
1046 | } |
1047 | ||
1048 | static void txq_set_rate(struct tx_queue *txq, int rate, int burst) | |
1049 | { | |
1050 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
1051 | int token_rate; | |
1052 | int bucket_size; | |
1053 | ||
452503eb | 1054 | token_rate = ((rate / 1000) * 64) / (mp->t_clk / 1000); |
89df5fdc LB |
1055 | if (token_rate > 1023) |
1056 | token_rate = 1023; | |
1057 | ||
1058 | bucket_size = (burst + 255) >> 8; | |
1059 | if (bucket_size > 65535) | |
1060 | bucket_size = 65535; | |
1061 | ||
37a6084f LB |
1062 | wrlp(mp, TXQ_BW_TOKENS(txq->index), token_rate << 14); |
1063 | wrlp(mp, TXQ_BW_CONF(txq->index), (bucket_size << 10) | token_rate); | |
89df5fdc LB |
1064 | } |
1065 | ||
1066 | static void txq_set_fixed_prio_mode(struct tx_queue *txq) | |
1067 | { | |
1068 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
1069 | int off; | |
1070 | u32 val; | |
1071 | ||
1072 | /* | |
1073 | * Turn on fixed priority mode. | |
1074 | */ | |
457b1d5a LB |
1075 | off = 0; |
1076 | switch (mp->shared->tx_bw_control) { | |
1077 | case TX_BW_CONTROL_OLD_LAYOUT: | |
37a6084f | 1078 | off = TXQ_FIX_PRIO_CONF; |
457b1d5a LB |
1079 | break; |
1080 | case TX_BW_CONTROL_NEW_LAYOUT: | |
37a6084f | 1081 | off = TXQ_FIX_PRIO_CONF_MOVED; |
457b1d5a LB |
1082 | break; |
1083 | } | |
89df5fdc | 1084 | |
457b1d5a | 1085 | if (off) { |
37a6084f | 1086 | val = rdlp(mp, off); |
457b1d5a | 1087 | val |= 1 << txq->index; |
37a6084f | 1088 | wrlp(mp, off, val); |
457b1d5a | 1089 | } |
89df5fdc LB |
1090 | } |
1091 | ||
89df5fdc | 1092 | |
c9df406f | 1093 | /* mii management interface *************************************************/ |
45c5d3bc LB |
1094 | static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id) |
1095 | { | |
1096 | struct mv643xx_eth_shared_private *msp = dev_id; | |
1097 | ||
1098 | if (readl(msp->base + ERR_INT_CAUSE) & ERR_INT_SMI_DONE) { | |
1099 | writel(~ERR_INT_SMI_DONE, msp->base + ERR_INT_CAUSE); | |
1100 | wake_up(&msp->smi_busy_wait); | |
1101 | return IRQ_HANDLED; | |
1102 | } | |
1103 | ||
1104 | return IRQ_NONE; | |
1105 | } | |
c9df406f | 1106 | |
45c5d3bc | 1107 | static int smi_is_done(struct mv643xx_eth_shared_private *msp) |
1da177e4 | 1108 | { |
45c5d3bc LB |
1109 | return !(readl(msp->base + SMI_REG) & SMI_BUSY); |
1110 | } | |
1da177e4 | 1111 | |
45c5d3bc LB |
1112 | static int smi_wait_ready(struct mv643xx_eth_shared_private *msp) |
1113 | { | |
1114 | if (msp->err_interrupt == NO_IRQ) { | |
1115 | int i; | |
c9df406f | 1116 | |
45c5d3bc LB |
1117 | for (i = 0; !smi_is_done(msp); i++) { |
1118 | if (i == 10) | |
1119 | return -ETIMEDOUT; | |
1120 | msleep(10); | |
c9df406f | 1121 | } |
45c5d3bc LB |
1122 | |
1123 | return 0; | |
1124 | } | |
1125 | ||
ee04448d LB |
1126 | if (!smi_is_done(msp)) { |
1127 | wait_event_timeout(msp->smi_busy_wait, smi_is_done(msp), | |
1128 | msecs_to_jiffies(100)); | |
1129 | if (!smi_is_done(msp)) | |
1130 | return -ETIMEDOUT; | |
1131 | } | |
45c5d3bc LB |
1132 | |
1133 | return 0; | |
1134 | } | |
1135 | ||
ed94493f | 1136 | static int smi_bus_read(struct mii_bus *bus, int addr, int reg) |
45c5d3bc | 1137 | { |
ed94493f | 1138 | struct mv643xx_eth_shared_private *msp = bus->priv; |
45c5d3bc LB |
1139 | void __iomem *smi_reg = msp->base + SMI_REG; |
1140 | int ret; | |
1141 | ||
45c5d3bc | 1142 | if (smi_wait_ready(msp)) { |
7542db8b | 1143 | pr_warn("SMI bus busy timeout\n"); |
ed94493f | 1144 | return -ETIMEDOUT; |
1da177e4 LT |
1145 | } |
1146 | ||
fc32b0e2 | 1147 | writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg); |
1da177e4 | 1148 | |
45c5d3bc | 1149 | if (smi_wait_ready(msp)) { |
7542db8b | 1150 | pr_warn("SMI bus busy timeout\n"); |
ed94493f | 1151 | return -ETIMEDOUT; |
45c5d3bc LB |
1152 | } |
1153 | ||
1154 | ret = readl(smi_reg); | |
1155 | if (!(ret & SMI_READ_VALID)) { | |
7542db8b | 1156 | pr_warn("SMI bus read not valid\n"); |
ed94493f | 1157 | return -ENODEV; |
c9df406f LB |
1158 | } |
1159 | ||
ed94493f | 1160 | return ret & 0xffff; |
1da177e4 LT |
1161 | } |
1162 | ||
ed94493f | 1163 | static int smi_bus_write(struct mii_bus *bus, int addr, int reg, u16 val) |
1da177e4 | 1164 | { |
ed94493f | 1165 | struct mv643xx_eth_shared_private *msp = bus->priv; |
45c5d3bc | 1166 | void __iomem *smi_reg = msp->base + SMI_REG; |
1da177e4 | 1167 | |
45c5d3bc | 1168 | if (smi_wait_ready(msp)) { |
7542db8b | 1169 | pr_warn("SMI bus busy timeout\n"); |
45c5d3bc | 1170 | return -ETIMEDOUT; |
1da177e4 LT |
1171 | } |
1172 | ||
fc32b0e2 | 1173 | writel(SMI_OPCODE_WRITE | (reg << 21) | |
ed94493f | 1174 | (addr << 16) | (val & 0xffff), smi_reg); |
45c5d3bc | 1175 | |
ed94493f | 1176 | if (smi_wait_ready(msp)) { |
7542db8b | 1177 | pr_warn("SMI bus busy timeout\n"); |
ed94493f LB |
1178 | return -ETIMEDOUT; |
1179 | } | |
45c5d3bc LB |
1180 | |
1181 | return 0; | |
c9df406f | 1182 | } |
1da177e4 | 1183 | |
c9df406f | 1184 | |
8fd89211 LB |
1185 | /* statistics ***************************************************************/ |
1186 | static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev) | |
1187 | { | |
1188 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1189 | struct net_device_stats *stats = &dev->stats; | |
1190 | unsigned long tx_packets = 0; | |
1191 | unsigned long tx_bytes = 0; | |
1192 | unsigned long tx_dropped = 0; | |
1193 | int i; | |
1194 | ||
1195 | for (i = 0; i < mp->txq_count; i++) { | |
1196 | struct tx_queue *txq = mp->txq + i; | |
1197 | ||
1198 | tx_packets += txq->tx_packets; | |
1199 | tx_bytes += txq->tx_bytes; | |
1200 | tx_dropped += txq->tx_dropped; | |
1201 | } | |
1202 | ||
1203 | stats->tx_packets = tx_packets; | |
1204 | stats->tx_bytes = tx_bytes; | |
1205 | stats->tx_dropped = tx_dropped; | |
1206 | ||
1207 | return stats; | |
1208 | } | |
1209 | ||
eaf5d590 LB |
1210 | static void mv643xx_eth_grab_lro_stats(struct mv643xx_eth_private *mp) |
1211 | { | |
1212 | u32 lro_aggregated = 0; | |
1213 | u32 lro_flushed = 0; | |
1214 | u32 lro_no_desc = 0; | |
1215 | int i; | |
1216 | ||
eaf5d590 LB |
1217 | for (i = 0; i < mp->rxq_count; i++) { |
1218 | struct rx_queue *rxq = mp->rxq + i; | |
1219 | ||
1220 | lro_aggregated += rxq->lro_mgr.stats.aggregated; | |
1221 | lro_flushed += rxq->lro_mgr.stats.flushed; | |
1222 | lro_no_desc += rxq->lro_mgr.stats.no_desc; | |
1223 | } | |
eaf5d590 LB |
1224 | |
1225 | mp->lro_counters.lro_aggregated = lro_aggregated; | |
1226 | mp->lro_counters.lro_flushed = lro_flushed; | |
1227 | mp->lro_counters.lro_no_desc = lro_no_desc; | |
1228 | } | |
1229 | ||
fc32b0e2 | 1230 | static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset) |
c9df406f | 1231 | { |
fc32b0e2 | 1232 | return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); |
1da177e4 LT |
1233 | } |
1234 | ||
fc32b0e2 | 1235 | static void mib_counters_clear(struct mv643xx_eth_private *mp) |
d0412d96 | 1236 | { |
fc32b0e2 LB |
1237 | int i; |
1238 | ||
1239 | for (i = 0; i < 0x80; i += 4) | |
1240 | mib_read(mp, i); | |
302476c9 PZ |
1241 | |
1242 | /* Clear non MIB hw counters also */ | |
1243 | rdlp(mp, RX_DISCARD_FRAME_CNT); | |
1244 | rdlp(mp, RX_OVERRUN_FRAME_CNT); | |
c9df406f | 1245 | } |
d0412d96 | 1246 | |
fc32b0e2 | 1247 | static void mib_counters_update(struct mv643xx_eth_private *mp) |
c9df406f | 1248 | { |
e5371493 | 1249 | struct mib_counters *p = &mp->mib_counters; |
4b8e3655 | 1250 | |
57e8f26a | 1251 | spin_lock_bh(&mp->mib_counters_lock); |
fc32b0e2 | 1252 | p->good_octets_received += mib_read(mp, 0x00); |
fc32b0e2 LB |
1253 | p->bad_octets_received += mib_read(mp, 0x08); |
1254 | p->internal_mac_transmit_err += mib_read(mp, 0x0c); | |
1255 | p->good_frames_received += mib_read(mp, 0x10); | |
1256 | p->bad_frames_received += mib_read(mp, 0x14); | |
1257 | p->broadcast_frames_received += mib_read(mp, 0x18); | |
1258 | p->multicast_frames_received += mib_read(mp, 0x1c); | |
1259 | p->frames_64_octets += mib_read(mp, 0x20); | |
1260 | p->frames_65_to_127_octets += mib_read(mp, 0x24); | |
1261 | p->frames_128_to_255_octets += mib_read(mp, 0x28); | |
1262 | p->frames_256_to_511_octets += mib_read(mp, 0x2c); | |
1263 | p->frames_512_to_1023_octets += mib_read(mp, 0x30); | |
1264 | p->frames_1024_to_max_octets += mib_read(mp, 0x34); | |
1265 | p->good_octets_sent += mib_read(mp, 0x38); | |
fc32b0e2 LB |
1266 | p->good_frames_sent += mib_read(mp, 0x40); |
1267 | p->excessive_collision += mib_read(mp, 0x44); | |
1268 | p->multicast_frames_sent += mib_read(mp, 0x48); | |
1269 | p->broadcast_frames_sent += mib_read(mp, 0x4c); | |
1270 | p->unrec_mac_control_received += mib_read(mp, 0x50); | |
1271 | p->fc_sent += mib_read(mp, 0x54); | |
1272 | p->good_fc_received += mib_read(mp, 0x58); | |
1273 | p->bad_fc_received += mib_read(mp, 0x5c); | |
1274 | p->undersize_received += mib_read(mp, 0x60); | |
1275 | p->fragments_received += mib_read(mp, 0x64); | |
1276 | p->oversize_received += mib_read(mp, 0x68); | |
1277 | p->jabber_received += mib_read(mp, 0x6c); | |
1278 | p->mac_receive_error += mib_read(mp, 0x70); | |
1279 | p->bad_crc_event += mib_read(mp, 0x74); | |
1280 | p->collision += mib_read(mp, 0x78); | |
1281 | p->late_collision += mib_read(mp, 0x7c); | |
302476c9 PZ |
1282 | /* Non MIB hardware counters */ |
1283 | p->rx_discard += rdlp(mp, RX_DISCARD_FRAME_CNT); | |
1284 | p->rx_overrun += rdlp(mp, RX_OVERRUN_FRAME_CNT); | |
57e8f26a | 1285 | spin_unlock_bh(&mp->mib_counters_lock); |
4ff3495a LB |
1286 | |
1287 | mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ); | |
1288 | } | |
1289 | ||
1290 | static void mib_counters_timer_wrapper(unsigned long _mp) | |
1291 | { | |
1292 | struct mv643xx_eth_private *mp = (void *)_mp; | |
1293 | ||
1294 | mib_counters_update(mp); | |
d0412d96 JC |
1295 | } |
1296 | ||
c9df406f | 1297 | |
3e508034 LB |
1298 | /* interrupt coalescing *****************************************************/ |
1299 | /* | |
1300 | * Hardware coalescing parameters are set in units of 64 t_clk | |
1301 | * cycles. I.e.: | |
1302 | * | |
1303 | * coal_delay_in_usec = 64000000 * register_value / t_clk_rate | |
1304 | * | |
1305 | * register_value = coal_delay_in_usec * t_clk_rate / 64000000 | |
1306 | * | |
1307 | * In the ->set*() methods, we round the computed register value | |
1308 | * to the nearest integer. | |
1309 | */ | |
1310 | static unsigned int get_rx_coal(struct mv643xx_eth_private *mp) | |
1311 | { | |
1312 | u32 val = rdlp(mp, SDMA_CONFIG); | |
1313 | u64 temp; | |
1314 | ||
1315 | if (mp->shared->extended_rx_coal_limit) | |
1316 | temp = ((val & 0x02000000) >> 10) | ((val & 0x003fff80) >> 7); | |
1317 | else | |
1318 | temp = (val & 0x003fff00) >> 8; | |
1319 | ||
1320 | temp *= 64000000; | |
452503eb | 1321 | do_div(temp, mp->t_clk); |
3e508034 LB |
1322 | |
1323 | return (unsigned int)temp; | |
1324 | } | |
1325 | ||
1326 | static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int usec) | |
1327 | { | |
1328 | u64 temp; | |
1329 | u32 val; | |
1330 | ||
452503eb | 1331 | temp = (u64)usec * mp->t_clk; |
3e508034 LB |
1332 | temp += 31999999; |
1333 | do_div(temp, 64000000); | |
1334 | ||
1335 | val = rdlp(mp, SDMA_CONFIG); | |
1336 | if (mp->shared->extended_rx_coal_limit) { | |
1337 | if (temp > 0xffff) | |
1338 | temp = 0xffff; | |
1339 | val &= ~0x023fff80; | |
1340 | val |= (temp & 0x8000) << 10; | |
1341 | val |= (temp & 0x7fff) << 7; | |
1342 | } else { | |
1343 | if (temp > 0x3fff) | |
1344 | temp = 0x3fff; | |
1345 | val &= ~0x003fff00; | |
1346 | val |= (temp & 0x3fff) << 8; | |
1347 | } | |
1348 | wrlp(mp, SDMA_CONFIG, val); | |
1349 | } | |
1350 | ||
1351 | static unsigned int get_tx_coal(struct mv643xx_eth_private *mp) | |
1352 | { | |
1353 | u64 temp; | |
1354 | ||
1355 | temp = (rdlp(mp, TX_FIFO_URGENT_THRESHOLD) & 0x3fff0) >> 4; | |
1356 | temp *= 64000000; | |
452503eb | 1357 | do_div(temp, mp->t_clk); |
3e508034 LB |
1358 | |
1359 | return (unsigned int)temp; | |
1360 | } | |
1361 | ||
1362 | static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int usec) | |
1363 | { | |
1364 | u64 temp; | |
1365 | ||
452503eb | 1366 | temp = (u64)usec * mp->t_clk; |
3e508034 LB |
1367 | temp += 31999999; |
1368 | do_div(temp, 64000000); | |
1369 | ||
1370 | if (temp > 0x3fff) | |
1371 | temp = 0x3fff; | |
1372 | ||
1373 | wrlp(mp, TX_FIFO_URGENT_THRESHOLD, temp << 4); | |
1374 | } | |
1375 | ||
1376 | ||
c9df406f | 1377 | /* ethtool ******************************************************************/ |
e5371493 | 1378 | struct mv643xx_eth_stats { |
c9df406f LB |
1379 | char stat_string[ETH_GSTRING_LEN]; |
1380 | int sizeof_stat; | |
16820054 LB |
1381 | int netdev_off; |
1382 | int mp_off; | |
c9df406f LB |
1383 | }; |
1384 | ||
16820054 LB |
1385 | #define SSTAT(m) \ |
1386 | { #m, FIELD_SIZEOF(struct net_device_stats, m), \ | |
1387 | offsetof(struct net_device, stats.m), -1 } | |
1388 | ||
1389 | #define MIBSTAT(m) \ | |
1390 | { #m, FIELD_SIZEOF(struct mib_counters, m), \ | |
1391 | -1, offsetof(struct mv643xx_eth_private, mib_counters.m) } | |
1392 | ||
eaf5d590 LB |
1393 | #define LROSTAT(m) \ |
1394 | { #m, FIELD_SIZEOF(struct lro_counters, m), \ | |
1395 | -1, offsetof(struct mv643xx_eth_private, lro_counters.m) } | |
1396 | ||
16820054 LB |
1397 | static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { |
1398 | SSTAT(rx_packets), | |
1399 | SSTAT(tx_packets), | |
1400 | SSTAT(rx_bytes), | |
1401 | SSTAT(tx_bytes), | |
1402 | SSTAT(rx_errors), | |
1403 | SSTAT(tx_errors), | |
1404 | SSTAT(rx_dropped), | |
1405 | SSTAT(tx_dropped), | |
1406 | MIBSTAT(good_octets_received), | |
1407 | MIBSTAT(bad_octets_received), | |
1408 | MIBSTAT(internal_mac_transmit_err), | |
1409 | MIBSTAT(good_frames_received), | |
1410 | MIBSTAT(bad_frames_received), | |
1411 | MIBSTAT(broadcast_frames_received), | |
1412 | MIBSTAT(multicast_frames_received), | |
1413 | MIBSTAT(frames_64_octets), | |
1414 | MIBSTAT(frames_65_to_127_octets), | |
1415 | MIBSTAT(frames_128_to_255_octets), | |
1416 | MIBSTAT(frames_256_to_511_octets), | |
1417 | MIBSTAT(frames_512_to_1023_octets), | |
1418 | MIBSTAT(frames_1024_to_max_octets), | |
1419 | MIBSTAT(good_octets_sent), | |
1420 | MIBSTAT(good_frames_sent), | |
1421 | MIBSTAT(excessive_collision), | |
1422 | MIBSTAT(multicast_frames_sent), | |
1423 | MIBSTAT(broadcast_frames_sent), | |
1424 | MIBSTAT(unrec_mac_control_received), | |
1425 | MIBSTAT(fc_sent), | |
1426 | MIBSTAT(good_fc_received), | |
1427 | MIBSTAT(bad_fc_received), | |
1428 | MIBSTAT(undersize_received), | |
1429 | MIBSTAT(fragments_received), | |
1430 | MIBSTAT(oversize_received), | |
1431 | MIBSTAT(jabber_received), | |
1432 | MIBSTAT(mac_receive_error), | |
1433 | MIBSTAT(bad_crc_event), | |
1434 | MIBSTAT(collision), | |
1435 | MIBSTAT(late_collision), | |
302476c9 PZ |
1436 | MIBSTAT(rx_discard), |
1437 | MIBSTAT(rx_overrun), | |
eaf5d590 LB |
1438 | LROSTAT(lro_aggregated), |
1439 | LROSTAT(lro_flushed), | |
1440 | LROSTAT(lro_no_desc), | |
c9df406f LB |
1441 | }; |
1442 | ||
10a9948d | 1443 | static int |
6bdf576e LB |
1444 | mv643xx_eth_get_settings_phy(struct mv643xx_eth_private *mp, |
1445 | struct ethtool_cmd *cmd) | |
d0412d96 | 1446 | { |
d0412d96 JC |
1447 | int err; |
1448 | ||
ed94493f LB |
1449 | err = phy_read_status(mp->phy); |
1450 | if (err == 0) | |
1451 | err = phy_ethtool_gset(mp->phy, cmd); | |
d0412d96 | 1452 | |
fc32b0e2 LB |
1453 | /* |
1454 | * The MAC does not support 1000baseT_Half. | |
1455 | */ | |
d0412d96 JC |
1456 | cmd->supported &= ~SUPPORTED_1000baseT_Half; |
1457 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; | |
1458 | ||
1459 | return err; | |
1460 | } | |
1461 | ||
10a9948d | 1462 | static int |
6bdf576e | 1463 | mv643xx_eth_get_settings_phyless(struct mv643xx_eth_private *mp, |
10a9948d | 1464 | struct ethtool_cmd *cmd) |
bedfe324 | 1465 | { |
81600eea LB |
1466 | u32 port_status; |
1467 | ||
37a6084f | 1468 | port_status = rdlp(mp, PORT_STATUS); |
81600eea | 1469 | |
bedfe324 LB |
1470 | cmd->supported = SUPPORTED_MII; |
1471 | cmd->advertising = ADVERTISED_MII; | |
81600eea LB |
1472 | switch (port_status & PORT_SPEED_MASK) { |
1473 | case PORT_SPEED_10: | |
70739497 | 1474 | ethtool_cmd_speed_set(cmd, SPEED_10); |
81600eea LB |
1475 | break; |
1476 | case PORT_SPEED_100: | |
70739497 | 1477 | ethtool_cmd_speed_set(cmd, SPEED_100); |
81600eea LB |
1478 | break; |
1479 | case PORT_SPEED_1000: | |
70739497 | 1480 | ethtool_cmd_speed_set(cmd, SPEED_1000); |
81600eea LB |
1481 | break; |
1482 | default: | |
1483 | cmd->speed = -1; | |
1484 | break; | |
1485 | } | |
1486 | cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF; | |
bedfe324 LB |
1487 | cmd->port = PORT_MII; |
1488 | cmd->phy_address = 0; | |
1489 | cmd->transceiver = XCVR_INTERNAL; | |
1490 | cmd->autoneg = AUTONEG_DISABLE; | |
1491 | cmd->maxtxpkt = 1; | |
1492 | cmd->maxrxpkt = 1; | |
1493 | ||
1494 | return 0; | |
1495 | } | |
1496 | ||
6bdf576e LB |
1497 | static int |
1498 | mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1499 | { | |
1500 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1501 | ||
1502 | if (mp->phy != NULL) | |
1503 | return mv643xx_eth_get_settings_phy(mp, cmd); | |
1504 | else | |
1505 | return mv643xx_eth_get_settings_phyless(mp, cmd); | |
1506 | } | |
1507 | ||
10a9948d LB |
1508 | static int |
1509 | mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1da177e4 | 1510 | { |
e5371493 | 1511 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
ab4384a6 | 1512 | |
6bdf576e LB |
1513 | if (mp->phy == NULL) |
1514 | return -EINVAL; | |
1515 | ||
fc32b0e2 LB |
1516 | /* |
1517 | * The MAC does not support 1000baseT_Half. | |
1518 | */ | |
1519 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; | |
1520 | ||
ed94493f | 1521 | return phy_ethtool_sset(mp->phy, cmd); |
c9df406f | 1522 | } |
1da177e4 | 1523 | |
fc32b0e2 LB |
1524 | static void mv643xx_eth_get_drvinfo(struct net_device *dev, |
1525 | struct ethtool_drvinfo *drvinfo) | |
c9df406f | 1526 | { |
6f39da2c AL |
1527 | strlcpy(drvinfo->driver, mv643xx_eth_driver_name, |
1528 | sizeof(drvinfo->driver)); | |
68aad78c | 1529 | strlcpy(drvinfo->version, mv643xx_eth_driver_version, |
6f39da2c AL |
1530 | sizeof(drvinfo->version)); |
1531 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); | |
1532 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
16820054 | 1533 | drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats); |
c9df406f | 1534 | } |
1da177e4 | 1535 | |
fc32b0e2 | 1536 | static int mv643xx_eth_nway_reset(struct net_device *dev) |
c9df406f | 1537 | { |
e5371493 | 1538 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1539 | |
6bdf576e LB |
1540 | if (mp->phy == NULL) |
1541 | return -EINVAL; | |
1da177e4 | 1542 | |
6bdf576e | 1543 | return genphy_restart_aneg(mp->phy); |
bedfe324 LB |
1544 | } |
1545 | ||
3e508034 LB |
1546 | static int |
1547 | mv643xx_eth_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) | |
1548 | { | |
1549 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1550 | ||
1551 | ec->rx_coalesce_usecs = get_rx_coal(mp); | |
1552 | ec->tx_coalesce_usecs = get_tx_coal(mp); | |
1553 | ||
1554 | return 0; | |
1555 | } | |
1556 | ||
1557 | static int | |
1558 | mv643xx_eth_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) | |
1559 | { | |
1560 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1561 | ||
1562 | set_rx_coal(mp, ec->rx_coalesce_usecs); | |
1563 | set_tx_coal(mp, ec->tx_coalesce_usecs); | |
1564 | ||
1565 | return 0; | |
1566 | } | |
1567 | ||
e7d2f4db LB |
1568 | static void |
1569 | mv643xx_eth_get_ringparam(struct net_device *dev, struct ethtool_ringparam *er) | |
1570 | { | |
1571 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1572 | ||
1573 | er->rx_max_pending = 4096; | |
1574 | er->tx_max_pending = 4096; | |
e7d2f4db LB |
1575 | |
1576 | er->rx_pending = mp->rx_ring_size; | |
1577 | er->tx_pending = mp->tx_ring_size; | |
e7d2f4db LB |
1578 | } |
1579 | ||
1580 | static int | |
1581 | mv643xx_eth_set_ringparam(struct net_device *dev, struct ethtool_ringparam *er) | |
1582 | { | |
1583 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
1584 | ||
1585 | if (er->rx_mini_pending || er->rx_jumbo_pending) | |
1586 | return -EINVAL; | |
1587 | ||
1588 | mp->rx_ring_size = er->rx_pending < 4096 ? er->rx_pending : 4096; | |
1589 | mp->tx_ring_size = er->tx_pending < 4096 ? er->tx_pending : 4096; | |
1590 | ||
1591 | if (netif_running(dev)) { | |
1592 | mv643xx_eth_stop(dev); | |
1593 | if (mv643xx_eth_open(dev)) { | |
7542db8b JP |
1594 | netdev_err(dev, |
1595 | "fatal error on re-opening device after ring param change\n"); | |
e7d2f4db LB |
1596 | return -ENOMEM; |
1597 | } | |
1598 | } | |
1599 | ||
1600 | return 0; | |
1601 | } | |
1602 | ||
d888b373 LB |
1603 | |
1604 | static int | |
c8f44aff | 1605 | mv643xx_eth_set_features(struct net_device *dev, netdev_features_t features) |
d888b373 LB |
1606 | { |
1607 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
3ad9b358 | 1608 | bool rx_csum = features & NETIF_F_RXCSUM; |
d888b373 LB |
1609 | |
1610 | wrlp(mp, PORT_CONFIG, rx_csum ? 0x02000000 : 0x00000000); | |
1611 | ||
1612 | return 0; | |
1613 | } | |
1614 | ||
fc32b0e2 LB |
1615 | static void mv643xx_eth_get_strings(struct net_device *dev, |
1616 | uint32_t stringset, uint8_t *data) | |
c9df406f LB |
1617 | { |
1618 | int i; | |
1da177e4 | 1619 | |
fc32b0e2 LB |
1620 | if (stringset == ETH_SS_STATS) { |
1621 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { | |
c9df406f | 1622 | memcpy(data + i * ETH_GSTRING_LEN, |
16820054 | 1623 | mv643xx_eth_stats[i].stat_string, |
e5371493 | 1624 | ETH_GSTRING_LEN); |
c9df406f | 1625 | } |
c9df406f LB |
1626 | } |
1627 | } | |
1da177e4 | 1628 | |
fc32b0e2 LB |
1629 | static void mv643xx_eth_get_ethtool_stats(struct net_device *dev, |
1630 | struct ethtool_stats *stats, | |
1631 | uint64_t *data) | |
c9df406f | 1632 | { |
b9873841 | 1633 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 1634 | int i; |
1da177e4 | 1635 | |
8fd89211 | 1636 | mv643xx_eth_get_stats(dev); |
fc32b0e2 | 1637 | mib_counters_update(mp); |
eaf5d590 | 1638 | mv643xx_eth_grab_lro_stats(mp); |
1da177e4 | 1639 | |
16820054 LB |
1640 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { |
1641 | const struct mv643xx_eth_stats *stat; | |
1642 | void *p; | |
1643 | ||
1644 | stat = mv643xx_eth_stats + i; | |
1645 | ||
1646 | if (stat->netdev_off >= 0) | |
1647 | p = ((void *)mp->dev) + stat->netdev_off; | |
1648 | else | |
1649 | p = ((void *)mp) + stat->mp_off; | |
1650 | ||
1651 | data[i] = (stat->sizeof_stat == 8) ? | |
1652 | *(uint64_t *)p : *(uint32_t *)p; | |
1da177e4 | 1653 | } |
c9df406f | 1654 | } |
1da177e4 | 1655 | |
fc32b0e2 | 1656 | static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset) |
c9df406f | 1657 | { |
fc32b0e2 | 1658 | if (sset == ETH_SS_STATS) |
16820054 | 1659 | return ARRAY_SIZE(mv643xx_eth_stats); |
fc32b0e2 LB |
1660 | |
1661 | return -EOPNOTSUPP; | |
c9df406f | 1662 | } |
1da177e4 | 1663 | |
e5371493 | 1664 | static const struct ethtool_ops mv643xx_eth_ethtool_ops = { |
fc32b0e2 LB |
1665 | .get_settings = mv643xx_eth_get_settings, |
1666 | .set_settings = mv643xx_eth_set_settings, | |
1667 | .get_drvinfo = mv643xx_eth_get_drvinfo, | |
1668 | .nway_reset = mv643xx_eth_nway_reset, | |
ed4ba4b5 | 1669 | .get_link = ethtool_op_get_link, |
3e508034 LB |
1670 | .get_coalesce = mv643xx_eth_get_coalesce, |
1671 | .set_coalesce = mv643xx_eth_set_coalesce, | |
e7d2f4db LB |
1672 | .get_ringparam = mv643xx_eth_get_ringparam, |
1673 | .set_ringparam = mv643xx_eth_set_ringparam, | |
fc32b0e2 LB |
1674 | .get_strings = mv643xx_eth_get_strings, |
1675 | .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, | |
e5371493 | 1676 | .get_sset_count = mv643xx_eth_get_sset_count, |
ebad0a8d | 1677 | .get_ts_info = ethtool_op_get_ts_info, |
c9df406f | 1678 | }; |
1da177e4 | 1679 | |
bea3348e | 1680 | |
c9df406f | 1681 | /* address handling *********************************************************/ |
5daffe94 | 1682 | static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr) |
c9df406f | 1683 | { |
66e63ffb LB |
1684 | unsigned int mac_h = rdlp(mp, MAC_ADDR_HIGH); |
1685 | unsigned int mac_l = rdlp(mp, MAC_ADDR_LOW); | |
1da177e4 | 1686 | |
5daffe94 LB |
1687 | addr[0] = (mac_h >> 24) & 0xff; |
1688 | addr[1] = (mac_h >> 16) & 0xff; | |
1689 | addr[2] = (mac_h >> 8) & 0xff; | |
1690 | addr[3] = mac_h & 0xff; | |
1691 | addr[4] = (mac_l >> 8) & 0xff; | |
1692 | addr[5] = mac_l & 0xff; | |
c9df406f | 1693 | } |
1da177e4 | 1694 | |
66e63ffb | 1695 | static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr) |
c9df406f | 1696 | { |
66e63ffb LB |
1697 | wrlp(mp, MAC_ADDR_HIGH, |
1698 | (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]); | |
1699 | wrlp(mp, MAC_ADDR_LOW, (addr[4] << 8) | addr[5]); | |
c9df406f | 1700 | } |
d0412d96 | 1701 | |
66e63ffb | 1702 | static u32 uc_addr_filter_mask(struct net_device *dev) |
c9df406f | 1703 | { |
ccffad25 | 1704 | struct netdev_hw_addr *ha; |
66e63ffb | 1705 | u32 nibbles; |
1da177e4 | 1706 | |
66e63ffb LB |
1707 | if (dev->flags & IFF_PROMISC) |
1708 | return 0; | |
1da177e4 | 1709 | |
66e63ffb | 1710 | nibbles = 1 << (dev->dev_addr[5] & 0x0f); |
32e7bfc4 | 1711 | netdev_for_each_uc_addr(ha, dev) { |
ccffad25 | 1712 | if (memcmp(dev->dev_addr, ha->addr, 5)) |
66e63ffb | 1713 | return 0; |
ccffad25 | 1714 | if ((dev->dev_addr[5] ^ ha->addr[5]) & 0xf0) |
66e63ffb | 1715 | return 0; |
ff561eef | 1716 | |
ccffad25 | 1717 | nibbles |= 1 << (ha->addr[5] & 0x0f); |
66e63ffb | 1718 | } |
1da177e4 | 1719 | |
66e63ffb | 1720 | return nibbles; |
1da177e4 LT |
1721 | } |
1722 | ||
66e63ffb | 1723 | static void mv643xx_eth_program_unicast_filter(struct net_device *dev) |
1da177e4 | 1724 | { |
e5371493 | 1725 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
66e63ffb LB |
1726 | u32 port_config; |
1727 | u32 nibbles; | |
1728 | int i; | |
1da177e4 | 1729 | |
cc9754b3 | 1730 | uc_addr_set(mp, dev->dev_addr); |
1da177e4 | 1731 | |
6877f54e PS |
1732 | port_config = rdlp(mp, PORT_CONFIG) & ~UNICAST_PROMISCUOUS_MODE; |
1733 | ||
66e63ffb LB |
1734 | nibbles = uc_addr_filter_mask(dev); |
1735 | if (!nibbles) { | |
1736 | port_config |= UNICAST_PROMISCUOUS_MODE; | |
6877f54e | 1737 | nibbles = 0xffff; |
66e63ffb LB |
1738 | } |
1739 | ||
1740 | for (i = 0; i < 16; i += 4) { | |
1741 | int off = UNICAST_TABLE(mp->port_num) + i; | |
1742 | u32 v; | |
1743 | ||
1744 | v = 0; | |
1745 | if (nibbles & 1) | |
1746 | v |= 0x00000001; | |
1747 | if (nibbles & 2) | |
1748 | v |= 0x00000100; | |
1749 | if (nibbles & 4) | |
1750 | v |= 0x00010000; | |
1751 | if (nibbles & 8) | |
1752 | v |= 0x01000000; | |
1753 | nibbles >>= 4; | |
1754 | ||
1755 | wrl(mp, off, v); | |
1756 | } | |
1757 | ||
66e63ffb | 1758 | wrlp(mp, PORT_CONFIG, port_config); |
1da177e4 LT |
1759 | } |
1760 | ||
69876569 LB |
1761 | static int addr_crc(unsigned char *addr) |
1762 | { | |
1763 | int crc = 0; | |
1764 | int i; | |
1765 | ||
1766 | for (i = 0; i < 6; i++) { | |
1767 | int j; | |
1768 | ||
1769 | crc = (crc ^ addr[i]) << 8; | |
1770 | for (j = 7; j >= 0; j--) { | |
1771 | if (crc & (0x100 << j)) | |
1772 | crc ^= 0x107 << j; | |
1773 | } | |
1774 | } | |
1775 | ||
1776 | return crc; | |
1777 | } | |
1778 | ||
66e63ffb | 1779 | static void mv643xx_eth_program_multicast_filter(struct net_device *dev) |
1da177e4 | 1780 | { |
fc32b0e2 | 1781 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
66e63ffb LB |
1782 | u32 *mc_spec; |
1783 | u32 *mc_other; | |
22bedad3 | 1784 | struct netdev_hw_addr *ha; |
fc32b0e2 | 1785 | int i; |
c8aaea25 | 1786 | |
fc32b0e2 | 1787 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
66e63ffb LB |
1788 | int port_num; |
1789 | u32 accept; | |
c8aaea25 | 1790 | |
66e63ffb LB |
1791 | oom: |
1792 | port_num = mp->port_num; | |
1793 | accept = 0x01010101; | |
fc32b0e2 LB |
1794 | for (i = 0; i < 0x100; i += 4) { |
1795 | wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept); | |
1796 | wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept); | |
c9df406f LB |
1797 | } |
1798 | return; | |
1799 | } | |
c8aaea25 | 1800 | |
82a5bd6a | 1801 | mc_spec = kmalloc(0x200, GFP_ATOMIC); |
66e63ffb LB |
1802 | if (mc_spec == NULL) |
1803 | goto oom; | |
1804 | mc_other = mc_spec + (0x100 >> 2); | |
1805 | ||
1806 | memset(mc_spec, 0, 0x100); | |
1807 | memset(mc_other, 0, 0x100); | |
1da177e4 | 1808 | |
22bedad3 JP |
1809 | netdev_for_each_mc_addr(ha, dev) { |
1810 | u8 *a = ha->addr; | |
66e63ffb LB |
1811 | u32 *table; |
1812 | int entry; | |
1da177e4 | 1813 | |
fc32b0e2 | 1814 | if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) { |
66e63ffb LB |
1815 | table = mc_spec; |
1816 | entry = a[5]; | |
fc32b0e2 | 1817 | } else { |
66e63ffb LB |
1818 | table = mc_other; |
1819 | entry = addr_crc(a); | |
fc32b0e2 | 1820 | } |
66e63ffb | 1821 | |
2b448334 | 1822 | table[entry >> 2] |= 1 << (8 * (entry & 3)); |
fc32b0e2 | 1823 | } |
66e63ffb LB |
1824 | |
1825 | for (i = 0; i < 0x100; i += 4) { | |
1826 | wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, mc_spec[i >> 2]); | |
1827 | wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, mc_other[i >> 2]); | |
1828 | } | |
1829 | ||
1830 | kfree(mc_spec); | |
1831 | } | |
1832 | ||
1833 | static void mv643xx_eth_set_rx_mode(struct net_device *dev) | |
1834 | { | |
1835 | mv643xx_eth_program_unicast_filter(dev); | |
1836 | mv643xx_eth_program_multicast_filter(dev); | |
1837 | } | |
1838 | ||
1839 | static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) | |
1840 | { | |
1841 | struct sockaddr *sa = addr; | |
1842 | ||
a29ec08a | 1843 | if (!is_valid_ether_addr(sa->sa_data)) |
504f9b5a | 1844 | return -EADDRNOTAVAIL; |
a29ec08a | 1845 | |
66e63ffb LB |
1846 | memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN); |
1847 | ||
1848 | netif_addr_lock_bh(dev); | |
1849 | mv643xx_eth_program_unicast_filter(dev); | |
1850 | netif_addr_unlock_bh(dev); | |
1851 | ||
1852 | return 0; | |
c9df406f | 1853 | } |
c8aaea25 | 1854 | |
c8aaea25 | 1855 | |
c9df406f | 1856 | /* rx/tx queue initialisation ***********************************************/ |
64da80a2 | 1857 | static int rxq_init(struct mv643xx_eth_private *mp, int index) |
c9df406f | 1858 | { |
64da80a2 | 1859 | struct rx_queue *rxq = mp->rxq + index; |
8a578111 LB |
1860 | struct rx_desc *rx_desc; |
1861 | int size; | |
c9df406f LB |
1862 | int i; |
1863 | ||
64da80a2 LB |
1864 | rxq->index = index; |
1865 | ||
e7d2f4db | 1866 | rxq->rx_ring_size = mp->rx_ring_size; |
8a578111 LB |
1867 | |
1868 | rxq->rx_desc_count = 0; | |
1869 | rxq->rx_curr_desc = 0; | |
1870 | rxq->rx_used_desc = 0; | |
1871 | ||
1872 | size = rxq->rx_ring_size * sizeof(struct rx_desc); | |
1873 | ||
f7981c1c | 1874 | if (index == 0 && size <= mp->rx_desc_sram_size) { |
8a578111 LB |
1875 | rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr, |
1876 | mp->rx_desc_sram_size); | |
1877 | rxq->rx_desc_dma = mp->rx_desc_sram_addr; | |
1878 | } else { | |
eb0519b5 GP |
1879 | rxq->rx_desc_area = dma_alloc_coherent(mp->dev->dev.parent, |
1880 | size, &rxq->rx_desc_dma, | |
1881 | GFP_KERNEL); | |
f7ea3337 PJ |
1882 | } |
1883 | ||
8a578111 | 1884 | if (rxq->rx_desc_area == NULL) { |
7542db8b | 1885 | netdev_err(mp->dev, |
8a578111 LB |
1886 | "can't allocate rx ring (%d bytes)\n", size); |
1887 | goto out; | |
1888 | } | |
1889 | memset(rxq->rx_desc_area, 0, size); | |
1da177e4 | 1890 | |
8a578111 LB |
1891 | rxq->rx_desc_area_size = size; |
1892 | rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb), | |
1893 | GFP_KERNEL); | |
1894 | if (rxq->rx_skb == NULL) { | |
7542db8b | 1895 | netdev_err(mp->dev, "can't allocate rx skb ring\n"); |
8a578111 LB |
1896 | goto out_free; |
1897 | } | |
1898 | ||
1899 | rx_desc = (struct rx_desc *)rxq->rx_desc_area; | |
1900 | for (i = 0; i < rxq->rx_ring_size; i++) { | |
9da78745 LB |
1901 | int nexti; |
1902 | ||
1903 | nexti = i + 1; | |
1904 | if (nexti == rxq->rx_ring_size) | |
1905 | nexti = 0; | |
1906 | ||
8a578111 LB |
1907 | rx_desc[i].next_desc_ptr = rxq->rx_desc_dma + |
1908 | nexti * sizeof(struct rx_desc); | |
1909 | } | |
1910 | ||
eaf5d590 LB |
1911 | rxq->lro_mgr.dev = mp->dev; |
1912 | memset(&rxq->lro_mgr.stats, 0, sizeof(rxq->lro_mgr.stats)); | |
1913 | rxq->lro_mgr.features = LRO_F_NAPI; | |
1914 | rxq->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1915 | rxq->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1916 | rxq->lro_mgr.max_desc = ARRAY_SIZE(rxq->lro_arr); | |
1917 | rxq->lro_mgr.max_aggr = 32; | |
1918 | rxq->lro_mgr.frag_align_pad = 0; | |
1919 | rxq->lro_mgr.lro_arr = rxq->lro_arr; | |
1920 | rxq->lro_mgr.get_skb_header = mv643xx_get_skb_header; | |
1921 | ||
1922 | memset(&rxq->lro_arr, 0, sizeof(rxq->lro_arr)); | |
eaf5d590 | 1923 | |
8a578111 LB |
1924 | return 0; |
1925 | ||
1926 | ||
1927 | out_free: | |
f7981c1c | 1928 | if (index == 0 && size <= mp->rx_desc_sram_size) |
8a578111 LB |
1929 | iounmap(rxq->rx_desc_area); |
1930 | else | |
eb0519b5 | 1931 | dma_free_coherent(mp->dev->dev.parent, size, |
8a578111 LB |
1932 | rxq->rx_desc_area, |
1933 | rxq->rx_desc_dma); | |
1934 | ||
1935 | out: | |
1936 | return -ENOMEM; | |
c9df406f | 1937 | } |
c8aaea25 | 1938 | |
8a578111 | 1939 | static void rxq_deinit(struct rx_queue *rxq) |
c9df406f | 1940 | { |
8a578111 LB |
1941 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
1942 | int i; | |
1943 | ||
1944 | rxq_disable(rxq); | |
c8aaea25 | 1945 | |
8a578111 LB |
1946 | for (i = 0; i < rxq->rx_ring_size; i++) { |
1947 | if (rxq->rx_skb[i]) { | |
1948 | dev_kfree_skb(rxq->rx_skb[i]); | |
1949 | rxq->rx_desc_count--; | |
1da177e4 | 1950 | } |
c8aaea25 | 1951 | } |
1da177e4 | 1952 | |
8a578111 | 1953 | if (rxq->rx_desc_count) { |
7542db8b | 1954 | netdev_err(mp->dev, "error freeing rx ring -- %d skbs stuck\n", |
8a578111 LB |
1955 | rxq->rx_desc_count); |
1956 | } | |
1957 | ||
f7981c1c | 1958 | if (rxq->index == 0 && |
64da80a2 | 1959 | rxq->rx_desc_area_size <= mp->rx_desc_sram_size) |
8a578111 | 1960 | iounmap(rxq->rx_desc_area); |
c9df406f | 1961 | else |
eb0519b5 | 1962 | dma_free_coherent(mp->dev->dev.parent, rxq->rx_desc_area_size, |
8a578111 LB |
1963 | rxq->rx_desc_area, rxq->rx_desc_dma); |
1964 | ||
1965 | kfree(rxq->rx_skb); | |
c9df406f | 1966 | } |
1da177e4 | 1967 | |
3d6b35bc | 1968 | static int txq_init(struct mv643xx_eth_private *mp, int index) |
c9df406f | 1969 | { |
3d6b35bc | 1970 | struct tx_queue *txq = mp->txq + index; |
13d64285 LB |
1971 | struct tx_desc *tx_desc; |
1972 | int size; | |
c9df406f | 1973 | int i; |
1da177e4 | 1974 | |
3d6b35bc LB |
1975 | txq->index = index; |
1976 | ||
e7d2f4db | 1977 | txq->tx_ring_size = mp->tx_ring_size; |
13d64285 LB |
1978 | |
1979 | txq->tx_desc_count = 0; | |
1980 | txq->tx_curr_desc = 0; | |
1981 | txq->tx_used_desc = 0; | |
1982 | ||
1983 | size = txq->tx_ring_size * sizeof(struct tx_desc); | |
1984 | ||
f7981c1c | 1985 | if (index == 0 && size <= mp->tx_desc_sram_size) { |
13d64285 LB |
1986 | txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr, |
1987 | mp->tx_desc_sram_size); | |
1988 | txq->tx_desc_dma = mp->tx_desc_sram_addr; | |
1989 | } else { | |
eb0519b5 GP |
1990 | txq->tx_desc_area = dma_alloc_coherent(mp->dev->dev.parent, |
1991 | size, &txq->tx_desc_dma, | |
1992 | GFP_KERNEL); | |
13d64285 LB |
1993 | } |
1994 | ||
1995 | if (txq->tx_desc_area == NULL) { | |
7542db8b | 1996 | netdev_err(mp->dev, |
13d64285 | 1997 | "can't allocate tx ring (%d bytes)\n", size); |
99ab08e0 | 1998 | return -ENOMEM; |
c9df406f | 1999 | } |
13d64285 LB |
2000 | memset(txq->tx_desc_area, 0, size); |
2001 | ||
2002 | txq->tx_desc_area_size = size; | |
13d64285 LB |
2003 | |
2004 | tx_desc = (struct tx_desc *)txq->tx_desc_area; | |
2005 | for (i = 0; i < txq->tx_ring_size; i++) { | |
6b368f68 | 2006 | struct tx_desc *txd = tx_desc + i; |
9da78745 LB |
2007 | int nexti; |
2008 | ||
2009 | nexti = i + 1; | |
2010 | if (nexti == txq->tx_ring_size) | |
2011 | nexti = 0; | |
6b368f68 LB |
2012 | |
2013 | txd->cmd_sts = 0; | |
2014 | txd->next_desc_ptr = txq->tx_desc_dma + | |
13d64285 LB |
2015 | nexti * sizeof(struct tx_desc); |
2016 | } | |
2017 | ||
99ab08e0 | 2018 | skb_queue_head_init(&txq->tx_skb); |
c9df406f | 2019 | |
99ab08e0 | 2020 | return 0; |
c8aaea25 | 2021 | } |
1da177e4 | 2022 | |
13d64285 | 2023 | static void txq_deinit(struct tx_queue *txq) |
c9df406f | 2024 | { |
13d64285 | 2025 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
fa3959f4 | 2026 | |
13d64285 | 2027 | txq_disable(txq); |
1fa38c58 | 2028 | txq_reclaim(txq, txq->tx_ring_size, 1); |
1da177e4 | 2029 | |
13d64285 | 2030 | BUG_ON(txq->tx_used_desc != txq->tx_curr_desc); |
1da177e4 | 2031 | |
f7981c1c | 2032 | if (txq->index == 0 && |
3d6b35bc | 2033 | txq->tx_desc_area_size <= mp->tx_desc_sram_size) |
13d64285 | 2034 | iounmap(txq->tx_desc_area); |
c9df406f | 2035 | else |
eb0519b5 | 2036 | dma_free_coherent(mp->dev->dev.parent, txq->tx_desc_area_size, |
13d64285 | 2037 | txq->tx_desc_area, txq->tx_desc_dma); |
c9df406f | 2038 | } |
1da177e4 | 2039 | |
1da177e4 | 2040 | |
c9df406f | 2041 | /* netdev ops and related ***************************************************/ |
1fa38c58 LB |
2042 | static int mv643xx_eth_collect_events(struct mv643xx_eth_private *mp) |
2043 | { | |
2044 | u32 int_cause; | |
2045 | u32 int_cause_ext; | |
2046 | ||
e0ca8410 | 2047 | int_cause = rdlp(mp, INT_CAUSE) & mp->int_mask; |
1fa38c58 LB |
2048 | if (int_cause == 0) |
2049 | return 0; | |
2050 | ||
2051 | int_cause_ext = 0; | |
e0ca8410 SB |
2052 | if (int_cause & INT_EXT) { |
2053 | int_cause &= ~INT_EXT; | |
37a6084f | 2054 | int_cause_ext = rdlp(mp, INT_CAUSE_EXT); |
e0ca8410 | 2055 | } |
1fa38c58 | 2056 | |
1fa38c58 | 2057 | if (int_cause) { |
37a6084f | 2058 | wrlp(mp, INT_CAUSE, ~int_cause); |
1fa38c58 | 2059 | mp->work_tx_end |= ((int_cause & INT_TX_END) >> 19) & |
37a6084f | 2060 | ~(rdlp(mp, TXQ_COMMAND) & 0xff); |
1fa38c58 LB |
2061 | mp->work_rx |= (int_cause & INT_RX) >> 2; |
2062 | } | |
2063 | ||
2064 | int_cause_ext &= INT_EXT_LINK_PHY | INT_EXT_TX; | |
2065 | if (int_cause_ext) { | |
37a6084f | 2066 | wrlp(mp, INT_CAUSE_EXT, ~int_cause_ext); |
1fa38c58 LB |
2067 | if (int_cause_ext & INT_EXT_LINK_PHY) |
2068 | mp->work_link = 1; | |
2069 | mp->work_tx |= int_cause_ext & INT_EXT_TX; | |
2070 | } | |
2071 | ||
2072 | return 1; | |
2073 | } | |
2074 | ||
2075 | static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id) | |
2076 | { | |
2077 | struct net_device *dev = (struct net_device *)dev_id; | |
2078 | struct mv643xx_eth_private *mp = netdev_priv(dev); | |
2079 | ||
2080 | if (unlikely(!mv643xx_eth_collect_events(mp))) | |
2081 | return IRQ_NONE; | |
2082 | ||
37a6084f | 2083 | wrlp(mp, INT_MASK, 0); |
1fa38c58 LB |
2084 | napi_schedule(&mp->napi); |
2085 | ||
2086 | return IRQ_HANDLED; | |
2087 | } | |
2088 | ||
2f7eb47a LB |
2089 | static void handle_link_event(struct mv643xx_eth_private *mp) |
2090 | { | |
2091 | struct net_device *dev = mp->dev; | |
2092 | u32 port_status; | |
2093 | int speed; | |
2094 | int duplex; | |
2095 | int fc; | |
2096 | ||
37a6084f | 2097 | port_status = rdlp(mp, PORT_STATUS); |
2f7eb47a LB |
2098 | if (!(port_status & LINK_UP)) { |
2099 | if (netif_carrier_ok(dev)) { | |
2100 | int i; | |
2101 | ||
7542db8b | 2102 | netdev_info(dev, "link down\n"); |
2f7eb47a LB |
2103 | |
2104 | netif_carrier_off(dev); | |
2f7eb47a | 2105 | |
f7981c1c | 2106 | for (i = 0; i < mp->txq_count; i++) { |
2f7eb47a LB |
2107 | struct tx_queue *txq = mp->txq + i; |
2108 | ||
1fa38c58 | 2109 | txq_reclaim(txq, txq->tx_ring_size, 1); |
f7981c1c | 2110 | txq_reset_hw_ptr(txq); |
2f7eb47a LB |
2111 | } |
2112 | } | |
2113 | return; | |
2114 | } | |
2115 | ||
2116 | switch (port_status & PORT_SPEED_MASK) { | |
2117 | case PORT_SPEED_10: | |
2118 | speed = 10; | |
2119 | break; | |
2120 | case PORT_SPEED_100: | |
2121 | speed = 100; | |
2122 | break; | |
2123 | case PORT_SPEED_1000: | |
2124 | speed = 1000; | |
2125 | break; | |
2126 | default: | |
2127 | speed = -1; | |
2128 | break; | |
2129 | } | |
2130 | duplex = (port_status & FULL_DUPLEX) ? 1 : 0; | |
2131 | fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0; | |
2132 | ||
7542db8b JP |
2133 | netdev_info(dev, "link up, %d Mb/s, %s duplex, flow control %sabled\n", |
2134 | speed, duplex ? "full" : "half", fc ? "en" : "dis"); | |
2f7eb47a | 2135 | |
4fdeca3f | 2136 | if (!netif_carrier_ok(dev)) |
2f7eb47a | 2137 | netif_carrier_on(dev); |
2f7eb47a LB |
2138 | } |
2139 | ||
1fa38c58 | 2140 | static int mv643xx_eth_poll(struct napi_struct *napi, int budget) |
c9df406f | 2141 | { |
1fa38c58 LB |
2142 | struct mv643xx_eth_private *mp; |
2143 | int work_done; | |
ce4e2e45 | 2144 | |
1fa38c58 | 2145 | mp = container_of(napi, struct mv643xx_eth_private, napi); |
fc32b0e2 | 2146 | |
1319ebad LB |
2147 | if (unlikely(mp->oom)) { |
2148 | mp->oom = 0; | |
2149 | del_timer(&mp->rx_oom); | |
2150 | } | |
1da177e4 | 2151 | |
1fa38c58 LB |
2152 | work_done = 0; |
2153 | while (work_done < budget) { | |
2154 | u8 queue_mask; | |
2155 | int queue; | |
2156 | int work_tbd; | |
2157 | ||
2158 | if (mp->work_link) { | |
2159 | mp->work_link = 0; | |
2160 | handle_link_event(mp); | |
26ef1f17 | 2161 | work_done++; |
1fa38c58 LB |
2162 | continue; |
2163 | } | |
1da177e4 | 2164 | |
1319ebad LB |
2165 | queue_mask = mp->work_tx | mp->work_tx_end | mp->work_rx; |
2166 | if (likely(!mp->oom)) | |
2167 | queue_mask |= mp->work_rx_refill; | |
2168 | ||
1fa38c58 LB |
2169 | if (!queue_mask) { |
2170 | if (mv643xx_eth_collect_events(mp)) | |
2171 | continue; | |
2172 | break; | |
2173 | } | |
1da177e4 | 2174 | |
1fa38c58 LB |
2175 | queue = fls(queue_mask) - 1; |
2176 | queue_mask = 1 << queue; | |
2177 | ||
2178 | work_tbd = budget - work_done; | |
2179 | if (work_tbd > 16) | |
2180 | work_tbd = 16; | |
2181 | ||
2182 | if (mp->work_tx_end & queue_mask) { | |
2183 | txq_kick(mp->txq + queue); | |
2184 | } else if (mp->work_tx & queue_mask) { | |
2185 | work_done += txq_reclaim(mp->txq + queue, work_tbd, 0); | |
2186 | txq_maybe_wake(mp->txq + queue); | |
2187 | } else if (mp->work_rx & queue_mask) { | |
2188 | work_done += rxq_process(mp->rxq + queue, work_tbd); | |
1319ebad | 2189 | } else if (!mp->oom && (mp->work_rx_refill & queue_mask)) { |
1fa38c58 LB |
2190 | work_done += rxq_refill(mp->rxq + queue, work_tbd); |
2191 | } else { | |
2192 | BUG(); | |
2193 | } | |
84dd619e | 2194 | } |
fc32b0e2 | 2195 | |
1fa38c58 | 2196 | if (work_done < budget) { |
1319ebad | 2197 | if (mp->oom) |
1fa38c58 LB |
2198 | mod_timer(&mp->rx_oom, jiffies + (HZ / 10)); |
2199 | napi_complete(napi); | |
e0ca8410 | 2200 | wrlp(mp, INT_MASK, mp->int_mask); |
226bb6b7 | 2201 | } |
3d6b35bc | 2202 | |
1fa38c58 LB |
2203 | return work_done; |
2204 | } | |
8fa89bf5 | 2205 | |
1fa38c58 LB |
2206 | static inline void oom_timer_wrapper(unsigned long data) |
2207 | { | |
2208 | struct mv643xx_eth_private *mp = (void *)data; | |
1da177e4 | 2209 | |
1fa38c58 | 2210 | napi_schedule(&mp->napi); |
1da177e4 LT |
2211 | } |
2212 | ||
e5371493 | 2213 | static void phy_reset(struct mv643xx_eth_private *mp) |
1da177e4 | 2214 | { |
45c5d3bc LB |
2215 | int data; |
2216 | ||
ed94493f | 2217 | data = phy_read(mp->phy, MII_BMCR); |
45c5d3bc LB |
2218 | if (data < 0) |
2219 | return; | |
1da177e4 | 2220 | |
7f106c1d | 2221 | data |= BMCR_RESET; |
ed94493f | 2222 | if (phy_write(mp->phy, MII_BMCR, data) < 0) |
45c5d3bc | 2223 | return; |
1da177e4 | 2224 | |
c9df406f | 2225 | do { |
ed94493f | 2226 | data = phy_read(mp->phy, MII_BMCR); |
45c5d3bc | 2227 | } while (data >= 0 && data & BMCR_RESET); |
1da177e4 LT |
2228 | } |
2229 | ||
fc32b0e2 | 2230 | static void port_start(struct mv643xx_eth_private *mp) |
1da177e4 | 2231 | { |
d0412d96 | 2232 | u32 pscr; |
8a578111 | 2233 | int i; |
1da177e4 | 2234 | |
bedfe324 LB |
2235 | /* |
2236 | * Perform PHY reset, if there is a PHY. | |
2237 | */ | |
ed94493f | 2238 | if (mp->phy != NULL) { |
bedfe324 LB |
2239 | struct ethtool_cmd cmd; |
2240 | ||
2241 | mv643xx_eth_get_settings(mp->dev, &cmd); | |
2242 | phy_reset(mp); | |
2243 | mv643xx_eth_set_settings(mp->dev, &cmd); | |
2244 | } | |
1da177e4 | 2245 | |
81600eea LB |
2246 | /* |
2247 | * Configure basic link parameters. | |
2248 | */ | |
37a6084f | 2249 | pscr = rdlp(mp, PORT_SERIAL_CONTROL); |
81600eea LB |
2250 | |
2251 | pscr |= SERIAL_PORT_ENABLE; | |
37a6084f | 2252 | wrlp(mp, PORT_SERIAL_CONTROL, pscr); |
81600eea LB |
2253 | |
2254 | pscr |= DO_NOT_FORCE_LINK_FAIL; | |
ed94493f | 2255 | if (mp->phy == NULL) |
81600eea | 2256 | pscr |= FORCE_LINK_PASS; |
37a6084f | 2257 | wrlp(mp, PORT_SERIAL_CONTROL, pscr); |
81600eea | 2258 | |
13d64285 LB |
2259 | /* |
2260 | * Configure TX path and queues. | |
2261 | */ | |
89df5fdc | 2262 | tx_set_rate(mp, 1000000000, 16777216); |
f7981c1c | 2263 | for (i = 0; i < mp->txq_count; i++) { |
3d6b35bc | 2264 | struct tx_queue *txq = mp->txq + i; |
13d64285 | 2265 | |
6b368f68 | 2266 | txq_reset_hw_ptr(txq); |
89df5fdc LB |
2267 | txq_set_rate(txq, 1000000000, 16777216); |
2268 | txq_set_fixed_prio_mode(txq); | |
13d64285 LB |
2269 | } |
2270 | ||
d9a073ea LB |
2271 | /* |
2272 | * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast | |
170e7108 LB |
2273 | * frames to RX queue #0, and include the pseudo-header when |
2274 | * calculating receive checksums. | |
d9a073ea | 2275 | */ |
e138f96b | 2276 | mv643xx_eth_set_features(mp->dev, mp->dev->features); |
01999873 | 2277 | |
376489a2 LB |
2278 | /* |
2279 | * Treat BPDUs as normal multicasts, and disable partition mode. | |
2280 | */ | |
37a6084f | 2281 | wrlp(mp, PORT_CONFIG_EXT, 0x00000000); |
01999873 | 2282 | |
5a893922 LB |
2283 | /* |
2284 | * Add configured unicast addresses to address filter table. | |
2285 | */ | |
2286 | mv643xx_eth_program_unicast_filter(mp->dev); | |
2287 | ||
8a578111 | 2288 | /* |
64da80a2 | 2289 | * Enable the receive queues. |
8a578111 | 2290 | */ |
f7981c1c | 2291 | for (i = 0; i < mp->rxq_count; i++) { |
64da80a2 | 2292 | struct rx_queue *rxq = mp->rxq + i; |
8a578111 | 2293 | u32 addr; |
1da177e4 | 2294 | |
8a578111 LB |
2295 | addr = (u32)rxq->rx_desc_dma; |
2296 | addr += rxq->rx_curr_desc * sizeof(struct rx_desc); | |
37a6084f | 2297 | wrlp(mp, RXQ_CURRENT_DESC_PTR(i), addr); |
1da177e4 | 2298 | |
8a578111 LB |
2299 | rxq_enable(rxq); |
2300 | } | |
1da177e4 LT |
2301 | } |
2302 | ||
2bcb4b0f LB |
2303 | static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private *mp) |
2304 | { | |
2305 | int skb_size; | |
2306 | ||
2307 | /* | |
2308 | * Reserve 2+14 bytes for an ethernet header (the hardware | |
2309 | * automatically prepends 2 bytes of dummy data to each | |
2310 | * received packet), 16 bytes for up to four VLAN tags, and | |
2311 | * 4 bytes for the trailing FCS -- 36 bytes total. | |
2312 | */ | |
2313 | skb_size = mp->dev->mtu + 36; | |
2314 | ||
2315 | /* | |
2316 | * Make sure that the skb size is a multiple of 8 bytes, as | |
2317 | * the lower three bits of the receive descriptor's buffer | |
2318 | * size field are ignored by the hardware. | |
2319 | */ | |
2320 | mp->skb_size = (skb_size + 7) & ~7; | |
7fd96ce4 LB |
2321 | |
2322 | /* | |
2323 | * If NET_SKB_PAD is smaller than a cache line, | |
2324 | * netdev_alloc_skb() will cause skb->data to be misaligned | |
2325 | * to a cache line boundary. If this is the case, include | |
2326 | * some extra space to allow re-aligning the data area. | |
2327 | */ | |
2328 | mp->skb_size += SKB_DMA_REALIGN; | |
2bcb4b0f LB |
2329 | } |
2330 | ||
c9df406f | 2331 | static int mv643xx_eth_open(struct net_device *dev) |
16e03018 | 2332 | { |
e5371493 | 2333 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 2334 | int err; |
64da80a2 | 2335 | int i; |
16e03018 | 2336 | |
37a6084f LB |
2337 | wrlp(mp, INT_CAUSE, 0); |
2338 | wrlp(mp, INT_CAUSE_EXT, 0); | |
2339 | rdlp(mp, INT_CAUSE_EXT); | |
c9df406f | 2340 | |
fc32b0e2 | 2341 | err = request_irq(dev->irq, mv643xx_eth_irq, |
2a1867a7 | 2342 | IRQF_SHARED, dev->name, dev); |
c9df406f | 2343 | if (err) { |
7542db8b | 2344 | netdev_err(dev, "can't assign irq\n"); |
c9df406f | 2345 | return -EAGAIN; |
16e03018 DF |
2346 | } |
2347 | ||
2bcb4b0f LB |
2348 | mv643xx_eth_recalc_skb_size(mp); |
2349 | ||
2257e05c LB |
2350 | napi_enable(&mp->napi); |
2351 | ||
2bcb4b0f LB |
2352 | skb_queue_head_init(&mp->rx_recycle); |
2353 | ||
e0ca8410 SB |
2354 | mp->int_mask = INT_EXT; |
2355 | ||
f7981c1c | 2356 | for (i = 0; i < mp->rxq_count; i++) { |
64da80a2 LB |
2357 | err = rxq_init(mp, i); |
2358 | if (err) { | |
2359 | while (--i >= 0) | |
f7981c1c | 2360 | rxq_deinit(mp->rxq + i); |
64da80a2 LB |
2361 | goto out; |
2362 | } | |
2363 | ||
1fa38c58 | 2364 | rxq_refill(mp->rxq + i, INT_MAX); |
e0ca8410 | 2365 | mp->int_mask |= INT_RX_0 << i; |
2257e05c LB |
2366 | } |
2367 | ||
1319ebad | 2368 | if (mp->oom) { |
2257e05c LB |
2369 | mp->rx_oom.expires = jiffies + (HZ / 10); |
2370 | add_timer(&mp->rx_oom); | |
64da80a2 | 2371 | } |
8a578111 | 2372 | |
f7981c1c | 2373 | for (i = 0; i < mp->txq_count; i++) { |
3d6b35bc LB |
2374 | err = txq_init(mp, i); |
2375 | if (err) { | |
2376 | while (--i >= 0) | |
f7981c1c | 2377 | txq_deinit(mp->txq + i); |
3d6b35bc LB |
2378 | goto out_free; |
2379 | } | |
e0ca8410 | 2380 | mp->int_mask |= INT_TX_END_0 << i; |
3d6b35bc | 2381 | } |
16e03018 | 2382 | |
fc32b0e2 | 2383 | port_start(mp); |
16e03018 | 2384 | |
37a6084f | 2385 | wrlp(mp, INT_MASK_EXT, INT_EXT_LINK_PHY | INT_EXT_TX); |
e0ca8410 | 2386 | wrlp(mp, INT_MASK, mp->int_mask); |
16e03018 | 2387 | |
c9df406f LB |
2388 | return 0; |
2389 | ||
13d64285 | 2390 | |
fc32b0e2 | 2391 | out_free: |
f7981c1c LB |
2392 | for (i = 0; i < mp->rxq_count; i++) |
2393 | rxq_deinit(mp->rxq + i); | |
fc32b0e2 | 2394 | out: |
c9df406f LB |
2395 | free_irq(dev->irq, dev); |
2396 | ||
2397 | return err; | |
16e03018 DF |
2398 | } |
2399 | ||
e5371493 | 2400 | static void port_reset(struct mv643xx_eth_private *mp) |
1da177e4 | 2401 | { |
fc32b0e2 | 2402 | unsigned int data; |
64da80a2 | 2403 | int i; |
1da177e4 | 2404 | |
f7981c1c LB |
2405 | for (i = 0; i < mp->rxq_count; i++) |
2406 | rxq_disable(mp->rxq + i); | |
2407 | for (i = 0; i < mp->txq_count; i++) | |
2408 | txq_disable(mp->txq + i); | |
ae9ae064 LB |
2409 | |
2410 | while (1) { | |
37a6084f | 2411 | u32 ps = rdlp(mp, PORT_STATUS); |
ae9ae064 LB |
2412 | |
2413 | if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY) | |
2414 | break; | |
13d64285 | 2415 | udelay(10); |
ae9ae064 | 2416 | } |
1da177e4 | 2417 | |
c9df406f | 2418 | /* Reset the Enable bit in the Configuration Register */ |
37a6084f | 2419 | data = rdlp(mp, PORT_SERIAL_CONTROL); |
fc32b0e2 LB |
2420 | data &= ~(SERIAL_PORT_ENABLE | |
2421 | DO_NOT_FORCE_LINK_FAIL | | |
2422 | FORCE_LINK_PASS); | |
37a6084f | 2423 | wrlp(mp, PORT_SERIAL_CONTROL, data); |
1da177e4 LT |
2424 | } |
2425 | ||
c9df406f | 2426 | static int mv643xx_eth_stop(struct net_device *dev) |
1da177e4 | 2427 | { |
e5371493 | 2428 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
64da80a2 | 2429 | int i; |
1da177e4 | 2430 | |
fe65e704 | 2431 | wrlp(mp, INT_MASK_EXT, 0x00000000); |
37a6084f LB |
2432 | wrlp(mp, INT_MASK, 0x00000000); |
2433 | rdlp(mp, INT_MASK); | |
1da177e4 | 2434 | |
c9df406f | 2435 | napi_disable(&mp->napi); |
78fff83b | 2436 | |
2257e05c LB |
2437 | del_timer_sync(&mp->rx_oom); |
2438 | ||
c9df406f | 2439 | netif_carrier_off(dev); |
1da177e4 | 2440 | |
fc32b0e2 LB |
2441 | free_irq(dev->irq, dev); |
2442 | ||
cc9754b3 | 2443 | port_reset(mp); |
8fd89211 | 2444 | mv643xx_eth_get_stats(dev); |
fc32b0e2 | 2445 | mib_counters_update(mp); |
57e8f26a | 2446 | del_timer_sync(&mp->mib_counters_timer); |
1da177e4 | 2447 | |
2bcb4b0f LB |
2448 | skb_queue_purge(&mp->rx_recycle); |
2449 | ||
f7981c1c LB |
2450 | for (i = 0; i < mp->rxq_count; i++) |
2451 | rxq_deinit(mp->rxq + i); | |
2452 | for (i = 0; i < mp->txq_count; i++) | |
2453 | txq_deinit(mp->txq + i); | |
1da177e4 | 2454 | |
c9df406f | 2455 | return 0; |
1da177e4 LT |
2456 | } |
2457 | ||
fc32b0e2 | 2458 | static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1da177e4 | 2459 | { |
e5371493 | 2460 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 2461 | |
ed94493f | 2462 | if (mp->phy != NULL) |
28b04113 | 2463 | return phy_mii_ioctl(mp->phy, ifr, cmd); |
bedfe324 LB |
2464 | |
2465 | return -EOPNOTSUPP; | |
1da177e4 LT |
2466 | } |
2467 | ||
c9df406f | 2468 | static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 | 2469 | { |
89df5fdc LB |
2470 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
2471 | ||
fc32b0e2 | 2472 | if (new_mtu < 64 || new_mtu > 9500) |
c9df406f | 2473 | return -EINVAL; |
1da177e4 | 2474 | |
c9df406f | 2475 | dev->mtu = new_mtu; |
2bcb4b0f | 2476 | mv643xx_eth_recalc_skb_size(mp); |
89df5fdc LB |
2477 | tx_set_rate(mp, 1000000000, 16777216); |
2478 | ||
c9df406f LB |
2479 | if (!netif_running(dev)) |
2480 | return 0; | |
1da177e4 | 2481 | |
c9df406f LB |
2482 | /* |
2483 | * Stop and then re-open the interface. This will allocate RX | |
2484 | * skbs of the new MTU. | |
2485 | * There is a possible danger that the open will not succeed, | |
fc32b0e2 | 2486 | * due to memory being full. |
c9df406f LB |
2487 | */ |
2488 | mv643xx_eth_stop(dev); | |
2489 | if (mv643xx_eth_open(dev)) { | |
7542db8b JP |
2490 | netdev_err(dev, |
2491 | "fatal error on re-opening device after MTU change\n"); | |
c9df406f LB |
2492 | } |
2493 | ||
2494 | return 0; | |
1da177e4 LT |
2495 | } |
2496 | ||
fc32b0e2 | 2497 | static void tx_timeout_task(struct work_struct *ugly) |
1da177e4 | 2498 | { |
fc32b0e2 | 2499 | struct mv643xx_eth_private *mp; |
1da177e4 | 2500 | |
fc32b0e2 LB |
2501 | mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task); |
2502 | if (netif_running(mp->dev)) { | |
e5ef1de1 | 2503 | netif_tx_stop_all_queues(mp->dev); |
fc32b0e2 LB |
2504 | port_reset(mp); |
2505 | port_start(mp); | |
e5ef1de1 | 2506 | netif_tx_wake_all_queues(mp->dev); |
fc32b0e2 | 2507 | } |
c9df406f LB |
2508 | } |
2509 | ||
c9df406f | 2510 | static void mv643xx_eth_tx_timeout(struct net_device *dev) |
1da177e4 | 2511 | { |
e5371493 | 2512 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 2513 | |
7542db8b | 2514 | netdev_info(dev, "tx timeout\n"); |
d0412d96 | 2515 | |
c9df406f | 2516 | schedule_work(&mp->tx_timeout_task); |
1da177e4 LT |
2517 | } |
2518 | ||
c9df406f | 2519 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fc32b0e2 | 2520 | static void mv643xx_eth_netpoll(struct net_device *dev) |
9f8dd319 | 2521 | { |
fc32b0e2 | 2522 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 2523 | |
37a6084f LB |
2524 | wrlp(mp, INT_MASK, 0x00000000); |
2525 | rdlp(mp, INT_MASK); | |
c9df406f | 2526 | |
fc32b0e2 | 2527 | mv643xx_eth_irq(dev->irq, dev); |
c9df406f | 2528 | |
e0ca8410 | 2529 | wrlp(mp, INT_MASK, mp->int_mask); |
9f8dd319 | 2530 | } |
c9df406f | 2531 | #endif |
9f8dd319 | 2532 | |
9f8dd319 | 2533 | |
c9df406f | 2534 | /* platform glue ************************************************************/ |
e5371493 LB |
2535 | static void |
2536 | mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp, | |
63a9332b | 2537 | const struct mbus_dram_target_info *dram) |
c9df406f | 2538 | { |
cc9754b3 | 2539 | void __iomem *base = msp->base; |
c9df406f LB |
2540 | u32 win_enable; |
2541 | u32 win_protect; | |
2542 | int i; | |
9f8dd319 | 2543 | |
c9df406f LB |
2544 | for (i = 0; i < 6; i++) { |
2545 | writel(0, base + WINDOW_BASE(i)); | |
2546 | writel(0, base + WINDOW_SIZE(i)); | |
2547 | if (i < 4) | |
2548 | writel(0, base + WINDOW_REMAP_HIGH(i)); | |
9f8dd319 DF |
2549 | } |
2550 | ||
c9df406f LB |
2551 | win_enable = 0x3f; |
2552 | win_protect = 0; | |
2553 | ||
2554 | for (i = 0; i < dram->num_cs; i++) { | |
63a9332b | 2555 | const struct mbus_dram_window *cs = dram->cs + i; |
c9df406f LB |
2556 | |
2557 | writel((cs->base & 0xffff0000) | | |
2558 | (cs->mbus_attr << 8) | | |
2559 | dram->mbus_dram_target_id, base + WINDOW_BASE(i)); | |
2560 | writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); | |
2561 | ||
2562 | win_enable &= ~(1 << i); | |
2563 | win_protect |= 3 << (2 * i); | |
2564 | } | |
2565 | ||
2566 | writel(win_enable, base + WINDOW_BAR_ENABLE); | |
2567 | msp->win_protect = win_protect; | |
9f8dd319 DF |
2568 | } |
2569 | ||
773fc3ee LB |
2570 | static void infer_hw_params(struct mv643xx_eth_shared_private *msp) |
2571 | { | |
2572 | /* | |
2573 | * Check whether we have a 14-bit coal limit field in bits | |
2574 | * [21:8], or a 16-bit coal limit in bits [25,21:7] of the | |
2575 | * SDMA config register. | |
2576 | */ | |
37a6084f LB |
2577 | writel(0x02000000, msp->base + 0x0400 + SDMA_CONFIG); |
2578 | if (readl(msp->base + 0x0400 + SDMA_CONFIG) & 0x02000000) | |
773fc3ee LB |
2579 | msp->extended_rx_coal_limit = 1; |
2580 | else | |
2581 | msp->extended_rx_coal_limit = 0; | |
1e881592 LB |
2582 | |
2583 | /* | |
457b1d5a LB |
2584 | * Check whether the MAC supports TX rate control, and if |
2585 | * yes, whether its associated registers are in the old or | |
2586 | * the new place. | |
1e881592 | 2587 | */ |
37a6084f LB |
2588 | writel(1, msp->base + 0x0400 + TX_BW_MTU_MOVED); |
2589 | if (readl(msp->base + 0x0400 + TX_BW_MTU_MOVED) & 1) { | |
457b1d5a LB |
2590 | msp->tx_bw_control = TX_BW_CONTROL_NEW_LAYOUT; |
2591 | } else { | |
37a6084f LB |
2592 | writel(7, msp->base + 0x0400 + TX_BW_RATE); |
2593 | if (readl(msp->base + 0x0400 + TX_BW_RATE) & 7) | |
457b1d5a LB |
2594 | msp->tx_bw_control = TX_BW_CONTROL_OLD_LAYOUT; |
2595 | else | |
2596 | msp->tx_bw_control = TX_BW_CONTROL_ABSENT; | |
2597 | } | |
773fc3ee LB |
2598 | } |
2599 | ||
c9df406f | 2600 | static int mv643xx_eth_shared_probe(struct platform_device *pdev) |
9f8dd319 | 2601 | { |
10a9948d | 2602 | static int mv643xx_eth_version_printed; |
c9df406f | 2603 | struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; |
e5371493 | 2604 | struct mv643xx_eth_shared_private *msp; |
63a9332b | 2605 | const struct mbus_dram_target_info *dram; |
c9df406f LB |
2606 | struct resource *res; |
2607 | int ret; | |
9f8dd319 | 2608 | |
e5371493 | 2609 | if (!mv643xx_eth_version_printed++) |
7542db8b JP |
2610 | pr_notice("MV-643xx 10/100/1000 ethernet driver version %s\n", |
2611 | mv643xx_eth_driver_version); | |
9f8dd319 | 2612 | |
c9df406f LB |
2613 | ret = -EINVAL; |
2614 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2615 | if (res == NULL) | |
2616 | goto out; | |
9f8dd319 | 2617 | |
c9df406f | 2618 | ret = -ENOMEM; |
beae22e6 | 2619 | msp = kzalloc(sizeof(*msp), GFP_KERNEL); |
c9df406f LB |
2620 | if (msp == NULL) |
2621 | goto out; | |
c9df406f | 2622 | |
28f65c11 | 2623 | msp->base = ioremap(res->start, resource_size(res)); |
cc9754b3 | 2624 | if (msp->base == NULL) |
c9df406f LB |
2625 | goto out_free; |
2626 | ||
ed94493f LB |
2627 | /* |
2628 | * Set up and register SMI bus. | |
2629 | */ | |
2630 | if (pd == NULL || pd->shared_smi == NULL) { | |
298cf9be LB |
2631 | msp->smi_bus = mdiobus_alloc(); |
2632 | if (msp->smi_bus == NULL) | |
ed94493f | 2633 | goto out_unmap; |
298cf9be LB |
2634 | |
2635 | msp->smi_bus->priv = msp; | |
2636 | msp->smi_bus->name = "mv643xx_eth smi"; | |
2637 | msp->smi_bus->read = smi_bus_read; | |
2638 | msp->smi_bus->write = smi_bus_write, | |
12322431 FF |
2639 | snprintf(msp->smi_bus->id, MII_BUS_ID_SIZE, "%s-%d", |
2640 | pdev->name, pdev->id); | |
298cf9be LB |
2641 | msp->smi_bus->parent = &pdev->dev; |
2642 | msp->smi_bus->phy_mask = 0xffffffff; | |
2643 | if (mdiobus_register(msp->smi_bus) < 0) | |
2644 | goto out_free_mii_bus; | |
ed94493f LB |
2645 | msp->smi = msp; |
2646 | } else { | |
fc0eb9f2 | 2647 | msp->smi = platform_get_drvdata(pd->shared_smi); |
ed94493f | 2648 | } |
c9df406f | 2649 | |
45c5d3bc LB |
2650 | msp->err_interrupt = NO_IRQ; |
2651 | init_waitqueue_head(&msp->smi_busy_wait); | |
2652 | ||
2653 | /* | |
2654 | * Check whether the error interrupt is hooked up. | |
2655 | */ | |
2656 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
2657 | if (res != NULL) { | |
2658 | int err; | |
2659 | ||
2660 | err = request_irq(res->start, mv643xx_eth_err_irq, | |
2661 | IRQF_SHARED, "mv643xx_eth", msp); | |
2662 | if (!err) { | |
2663 | writel(ERR_INT_SMI_DONE, msp->base + ERR_INT_MASK); | |
2664 | msp->err_interrupt = res->start; | |
2665 | } | |
2666 | } | |
2667 | ||
c9df406f LB |
2668 | /* |
2669 | * (Re-)program MBUS remapping windows if we are asked to. | |
2670 | */ | |
63a9332b AL |
2671 | dram = mv_mbus_dram_info(); |
2672 | if (dram) | |
2673 | mv643xx_eth_conf_mbus_windows(msp, dram); | |
c9df406f | 2674 | |
50a749c1 DC |
2675 | msp->tx_csum_limit = (pd != NULL && pd->tx_csum_limit) ? |
2676 | pd->tx_csum_limit : 9 * 1024; | |
773fc3ee | 2677 | infer_hw_params(msp); |
fc32b0e2 LB |
2678 | |
2679 | platform_set_drvdata(pdev, msp); | |
2680 | ||
c9df406f LB |
2681 | return 0; |
2682 | ||
298cf9be LB |
2683 | out_free_mii_bus: |
2684 | mdiobus_free(msp->smi_bus); | |
ed94493f LB |
2685 | out_unmap: |
2686 | iounmap(msp->base); | |
c9df406f LB |
2687 | out_free: |
2688 | kfree(msp); | |
2689 | out: | |
2690 | return ret; | |
2691 | } | |
2692 | ||
2693 | static int mv643xx_eth_shared_remove(struct platform_device *pdev) | |
2694 | { | |
e5371493 | 2695 | struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev); |
ed94493f | 2696 | struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; |
c9df406f | 2697 | |
298cf9be | 2698 | if (pd == NULL || pd->shared_smi == NULL) { |
298cf9be | 2699 | mdiobus_unregister(msp->smi_bus); |
bcb3336c | 2700 | mdiobus_free(msp->smi_bus); |
298cf9be | 2701 | } |
45c5d3bc LB |
2702 | if (msp->err_interrupt != NO_IRQ) |
2703 | free_irq(msp->err_interrupt, msp); | |
cc9754b3 | 2704 | iounmap(msp->base); |
c9df406f LB |
2705 | kfree(msp); |
2706 | ||
2707 | return 0; | |
9f8dd319 DF |
2708 | } |
2709 | ||
c9df406f | 2710 | static struct platform_driver mv643xx_eth_shared_driver = { |
fc32b0e2 LB |
2711 | .probe = mv643xx_eth_shared_probe, |
2712 | .remove = mv643xx_eth_shared_remove, | |
c9df406f | 2713 | .driver = { |
fc32b0e2 | 2714 | .name = MV643XX_ETH_SHARED_NAME, |
c9df406f LB |
2715 | .owner = THIS_MODULE, |
2716 | }, | |
2717 | }; | |
2718 | ||
e5371493 | 2719 | static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr) |
1da177e4 | 2720 | { |
c9df406f | 2721 | int addr_shift = 5 * mp->port_num; |
fc32b0e2 | 2722 | u32 data; |
1da177e4 | 2723 | |
fc32b0e2 LB |
2724 | data = rdl(mp, PHY_ADDR); |
2725 | data &= ~(0x1f << addr_shift); | |
2726 | data |= (phy_addr & 0x1f) << addr_shift; | |
2727 | wrl(mp, PHY_ADDR, data); | |
1da177e4 LT |
2728 | } |
2729 | ||
e5371493 | 2730 | static int phy_addr_get(struct mv643xx_eth_private *mp) |
1da177e4 | 2731 | { |
fc32b0e2 LB |
2732 | unsigned int data; |
2733 | ||
2734 | data = rdl(mp, PHY_ADDR); | |
2735 | ||
2736 | return (data >> (5 * mp->port_num)) & 0x1f; | |
2737 | } | |
2738 | ||
2739 | static void set_params(struct mv643xx_eth_private *mp, | |
2740 | struct mv643xx_eth_platform_data *pd) | |
2741 | { | |
2742 | struct net_device *dev = mp->dev; | |
2743 | ||
2744 | if (is_valid_ether_addr(pd->mac_addr)) | |
2745 | memcpy(dev->dev_addr, pd->mac_addr, 6); | |
2746 | else | |
2747 | uc_addr_get(mp, dev->dev_addr); | |
2748 | ||
e7d2f4db | 2749 | mp->rx_ring_size = DEFAULT_RX_QUEUE_SIZE; |
fc32b0e2 | 2750 | if (pd->rx_queue_size) |
e7d2f4db | 2751 | mp->rx_ring_size = pd->rx_queue_size; |
fc32b0e2 LB |
2752 | mp->rx_desc_sram_addr = pd->rx_sram_addr; |
2753 | mp->rx_desc_sram_size = pd->rx_sram_size; | |
1da177e4 | 2754 | |
f7981c1c | 2755 | mp->rxq_count = pd->rx_queue_count ? : 1; |
64da80a2 | 2756 | |
e7d2f4db | 2757 | mp->tx_ring_size = DEFAULT_TX_QUEUE_SIZE; |
fc32b0e2 | 2758 | if (pd->tx_queue_size) |
e7d2f4db | 2759 | mp->tx_ring_size = pd->tx_queue_size; |
fc32b0e2 LB |
2760 | mp->tx_desc_sram_addr = pd->tx_sram_addr; |
2761 | mp->tx_desc_sram_size = pd->tx_sram_size; | |
3d6b35bc | 2762 | |
f7981c1c | 2763 | mp->txq_count = pd->tx_queue_count ? : 1; |
1da177e4 LT |
2764 | } |
2765 | ||
ed94493f LB |
2766 | static struct phy_device *phy_scan(struct mv643xx_eth_private *mp, |
2767 | int phy_addr) | |
1da177e4 | 2768 | { |
298cf9be | 2769 | struct mii_bus *bus = mp->shared->smi->smi_bus; |
ed94493f LB |
2770 | struct phy_device *phydev; |
2771 | int start; | |
2772 | int num; | |
2773 | int i; | |
45c5d3bc | 2774 | |
ed94493f LB |
2775 | if (phy_addr == MV643XX_ETH_PHY_ADDR_DEFAULT) { |
2776 | start = phy_addr_get(mp) & 0x1f; | |
2777 | num = 32; | |
2778 | } else { | |
2779 | start = phy_addr & 0x1f; | |
2780 | num = 1; | |
2781 | } | |
45c5d3bc | 2782 | |
ed94493f LB |
2783 | phydev = NULL; |
2784 | for (i = 0; i < num; i++) { | |
2785 | int addr = (start + i) & 0x1f; | |
fc32b0e2 | 2786 | |
ed94493f LB |
2787 | if (bus->phy_map[addr] == NULL) |
2788 | mdiobus_scan(bus, addr); | |
1da177e4 | 2789 | |
ed94493f LB |
2790 | if (phydev == NULL) { |
2791 | phydev = bus->phy_map[addr]; | |
2792 | if (phydev != NULL) | |
2793 | phy_addr_set(mp, addr); | |
2794 | } | |
2795 | } | |
1da177e4 | 2796 | |
ed94493f | 2797 | return phydev; |
1da177e4 LT |
2798 | } |
2799 | ||
ed94493f | 2800 | static void phy_init(struct mv643xx_eth_private *mp, int speed, int duplex) |
c28a4f89 | 2801 | { |
ed94493f | 2802 | struct phy_device *phy = mp->phy; |
c28a4f89 | 2803 | |
fc32b0e2 LB |
2804 | phy_reset(mp); |
2805 | ||
db1d7bf7 | 2806 | phy_attach(mp->dev, dev_name(&phy->dev), 0, PHY_INTERFACE_MODE_GMII); |
ed94493f LB |
2807 | |
2808 | if (speed == 0) { | |
2809 | phy->autoneg = AUTONEG_ENABLE; | |
2810 | phy->speed = 0; | |
2811 | phy->duplex = 0; | |
2812 | phy->advertising = phy->supported | ADVERTISED_Autoneg; | |
c9df406f | 2813 | } else { |
ed94493f LB |
2814 | phy->autoneg = AUTONEG_DISABLE; |
2815 | phy->advertising = 0; | |
2816 | phy->speed = speed; | |
2817 | phy->duplex = duplex; | |
c9df406f | 2818 | } |
ed94493f | 2819 | phy_start_aneg(phy); |
c28a4f89 JC |
2820 | } |
2821 | ||
81600eea LB |
2822 | static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex) |
2823 | { | |
2824 | u32 pscr; | |
2825 | ||
37a6084f | 2826 | pscr = rdlp(mp, PORT_SERIAL_CONTROL); |
81600eea LB |
2827 | if (pscr & SERIAL_PORT_ENABLE) { |
2828 | pscr &= ~SERIAL_PORT_ENABLE; | |
37a6084f | 2829 | wrlp(mp, PORT_SERIAL_CONTROL, pscr); |
81600eea LB |
2830 | } |
2831 | ||
2832 | pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED; | |
ed94493f | 2833 | if (mp->phy == NULL) { |
81600eea LB |
2834 | pscr |= DISABLE_AUTO_NEG_SPEED_GMII; |
2835 | if (speed == SPEED_1000) | |
2836 | pscr |= SET_GMII_SPEED_TO_1000; | |
2837 | else if (speed == SPEED_100) | |
2838 | pscr |= SET_MII_SPEED_TO_100; | |
2839 | ||
2840 | pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL; | |
2841 | ||
2842 | pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX; | |
2843 | if (duplex == DUPLEX_FULL) | |
2844 | pscr |= SET_FULL_DUPLEX_MODE; | |
2845 | } | |
2846 | ||
37a6084f | 2847 | wrlp(mp, PORT_SERIAL_CONTROL, pscr); |
81600eea LB |
2848 | } |
2849 | ||
ea8a8642 LB |
2850 | static const struct net_device_ops mv643xx_eth_netdev_ops = { |
2851 | .ndo_open = mv643xx_eth_open, | |
2852 | .ndo_stop = mv643xx_eth_stop, | |
2853 | .ndo_start_xmit = mv643xx_eth_xmit, | |
2854 | .ndo_set_rx_mode = mv643xx_eth_set_rx_mode, | |
2855 | .ndo_set_mac_address = mv643xx_eth_set_mac_address, | |
1d4bd947 | 2856 | .ndo_validate_addr = eth_validate_addr, |
ea8a8642 LB |
2857 | .ndo_do_ioctl = mv643xx_eth_ioctl, |
2858 | .ndo_change_mtu = mv643xx_eth_change_mtu, | |
aad59c43 | 2859 | .ndo_set_features = mv643xx_eth_set_features, |
ea8a8642 LB |
2860 | .ndo_tx_timeout = mv643xx_eth_tx_timeout, |
2861 | .ndo_get_stats = mv643xx_eth_get_stats, | |
2862 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2863 | .ndo_poll_controller = mv643xx_eth_netpoll, | |
2864 | #endif | |
2865 | }; | |
2866 | ||
c9df406f | 2867 | static int mv643xx_eth_probe(struct platform_device *pdev) |
1da177e4 | 2868 | { |
c9df406f | 2869 | struct mv643xx_eth_platform_data *pd; |
e5371493 | 2870 | struct mv643xx_eth_private *mp; |
c9df406f | 2871 | struct net_device *dev; |
c9df406f | 2872 | struct resource *res; |
fc32b0e2 | 2873 | int err; |
1da177e4 | 2874 | |
c9df406f LB |
2875 | pd = pdev->dev.platform_data; |
2876 | if (pd == NULL) { | |
7542db8b | 2877 | dev_err(&pdev->dev, "no mv643xx_eth_platform_data\n"); |
c9df406f LB |
2878 | return -ENODEV; |
2879 | } | |
1da177e4 | 2880 | |
c9df406f | 2881 | if (pd->shared == NULL) { |
7542db8b | 2882 | dev_err(&pdev->dev, "no mv643xx_eth_platform_data->shared\n"); |
c9df406f LB |
2883 | return -ENODEV; |
2884 | } | |
8f518703 | 2885 | |
e5ef1de1 | 2886 | dev = alloc_etherdev_mq(sizeof(struct mv643xx_eth_private), 8); |
c9df406f LB |
2887 | if (!dev) |
2888 | return -ENOMEM; | |
1da177e4 | 2889 | |
c9df406f | 2890 | mp = netdev_priv(dev); |
fc32b0e2 LB |
2891 | platform_set_drvdata(pdev, mp); |
2892 | ||
2893 | mp->shared = platform_get_drvdata(pd->shared); | |
37a6084f | 2894 | mp->base = mp->shared->base + 0x0400 + (pd->port_number << 10); |
fc32b0e2 LB |
2895 | mp->port_num = pd->port_number; |
2896 | ||
c9df406f | 2897 | mp->dev = dev; |
78fff83b | 2898 | |
452503eb | 2899 | /* |
9a43a026 AL |
2900 | * Start with a default rate, and if there is a clock, allow |
2901 | * it to override the default. | |
452503eb | 2902 | */ |
9a43a026 AL |
2903 | mp->t_clk = 133000000; |
2904 | #if defined(CONFIG_HAVE_CLK) | |
452503eb AL |
2905 | mp->clk = clk_get(&pdev->dev, (pdev->id ? "1" : "0")); |
2906 | if (!IS_ERR(mp->clk)) { | |
2907 | clk_prepare_enable(mp->clk); | |
2908 | mp->t_clk = clk_get_rate(mp->clk); | |
452503eb | 2909 | } |
9a43a026 | 2910 | #endif |
fc32b0e2 | 2911 | set_params(mp, pd); |
206d6b32 BH |
2912 | netif_set_real_num_tx_queues(dev, mp->txq_count); |
2913 | netif_set_real_num_rx_queues(dev, mp->rxq_count); | |
fc32b0e2 | 2914 | |
ed94493f LB |
2915 | if (pd->phy_addr != MV643XX_ETH_PHY_NONE) |
2916 | mp->phy = phy_scan(mp, pd->phy_addr); | |
bedfe324 | 2917 | |
6bdf576e | 2918 | if (mp->phy != NULL) |
ed94493f | 2919 | phy_init(mp, pd->speed, pd->duplex); |
6bdf576e LB |
2920 | |
2921 | SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); | |
ed94493f | 2922 | |
81600eea | 2923 | init_pscr(mp, pd->speed, pd->duplex); |
fc32b0e2 | 2924 | |
4ff3495a LB |
2925 | |
2926 | mib_counters_clear(mp); | |
2927 | ||
2928 | init_timer(&mp->mib_counters_timer); | |
2929 | mp->mib_counters_timer.data = (unsigned long)mp; | |
2930 | mp->mib_counters_timer.function = mib_counters_timer_wrapper; | |
2931 | mp->mib_counters_timer.expires = jiffies + 30 * HZ; | |
2932 | add_timer(&mp->mib_counters_timer); | |
2933 | ||
2934 | spin_lock_init(&mp->mib_counters_lock); | |
2935 | ||
2936 | INIT_WORK(&mp->tx_timeout_task, tx_timeout_task); | |
2937 | ||
2257e05c LB |
2938 | netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 128); |
2939 | ||
2940 | init_timer(&mp->rx_oom); | |
2941 | mp->rx_oom.data = (unsigned long)mp; | |
2942 | mp->rx_oom.function = oom_timer_wrapper; | |
2943 | ||
fc32b0e2 | 2944 | |
c9df406f LB |
2945 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
2946 | BUG_ON(!res); | |
2947 | dev->irq = res->start; | |
1da177e4 | 2948 | |
ea8a8642 LB |
2949 | dev->netdev_ops = &mv643xx_eth_netdev_ops; |
2950 | ||
c9df406f LB |
2951 | dev->watchdog_timeo = 2 * HZ; |
2952 | dev->base_addr = 0; | |
1da177e4 | 2953 | |
aad59c43 MM |
2954 | dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | |
2955 | NETIF_F_RXCSUM | NETIF_F_LRO; | |
2956 | dev->features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM; | |
e32b6617 | 2957 | dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM; |
1da177e4 | 2958 | |
01789349 JP |
2959 | dev->priv_flags |= IFF_UNICAST_FLT; |
2960 | ||
fc32b0e2 | 2961 | SET_NETDEV_DEV(dev, &pdev->dev); |
8f518703 | 2962 | |
c9df406f | 2963 | if (mp->shared->win_protect) |
fc32b0e2 | 2964 | wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect); |
1da177e4 | 2965 | |
a5fe3616 LB |
2966 | netif_carrier_off(dev); |
2967 | ||
b5e86db4 LB |
2968 | wrlp(mp, SDMA_CONFIG, PORT_SDMA_CONFIG_DEFAULT_VALUE); |
2969 | ||
4fb0a54a | 2970 | set_rx_coal(mp, 250); |
a5fe3616 LB |
2971 | set_tx_coal(mp, 0); |
2972 | ||
c9df406f LB |
2973 | err = register_netdev(dev); |
2974 | if (err) | |
2975 | goto out; | |
1da177e4 | 2976 | |
7542db8b JP |
2977 | netdev_notice(dev, "port %d with MAC address %pM\n", |
2978 | mp->port_num, dev->dev_addr); | |
1da177e4 | 2979 | |
13d64285 | 2980 | if (mp->tx_desc_sram_size > 0) |
7542db8b | 2981 | netdev_notice(dev, "configured with sram\n"); |
1da177e4 | 2982 | |
c9df406f | 2983 | return 0; |
1da177e4 | 2984 | |
c9df406f LB |
2985 | out: |
2986 | free_netdev(dev); | |
1da177e4 | 2987 | |
c9df406f | 2988 | return err; |
1da177e4 LT |
2989 | } |
2990 | ||
c9df406f | 2991 | static int mv643xx_eth_remove(struct platform_device *pdev) |
1da177e4 | 2992 | { |
fc32b0e2 | 2993 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); |
1da177e4 | 2994 | |
fc32b0e2 | 2995 | unregister_netdev(mp->dev); |
ed94493f LB |
2996 | if (mp->phy != NULL) |
2997 | phy_detach(mp->phy); | |
23f333a2 | 2998 | cancel_work_sync(&mp->tx_timeout_task); |
452503eb | 2999 | |
9a43a026 | 3000 | #if defined(CONFIG_HAVE_CLK) |
452503eb AL |
3001 | if (!IS_ERR(mp->clk)) { |
3002 | clk_disable_unprepare(mp->clk); | |
3003 | clk_put(mp->clk); | |
3004 | } | |
9a43a026 AL |
3005 | #endif |
3006 | ||
fc32b0e2 | 3007 | free_netdev(mp->dev); |
c9df406f | 3008 | |
c9df406f | 3009 | platform_set_drvdata(pdev, NULL); |
fc32b0e2 | 3010 | |
c9df406f | 3011 | return 0; |
1da177e4 LT |
3012 | } |
3013 | ||
c9df406f | 3014 | static void mv643xx_eth_shutdown(struct platform_device *pdev) |
d0412d96 | 3015 | { |
fc32b0e2 | 3016 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); |
d0412d96 | 3017 | |
c9df406f | 3018 | /* Mask all interrupts on ethernet port */ |
37a6084f LB |
3019 | wrlp(mp, INT_MASK, 0); |
3020 | rdlp(mp, INT_MASK); | |
c9df406f | 3021 | |
fc32b0e2 LB |
3022 | if (netif_running(mp->dev)) |
3023 | port_reset(mp); | |
d0412d96 JC |
3024 | } |
3025 | ||
c9df406f | 3026 | static struct platform_driver mv643xx_eth_driver = { |
fc32b0e2 LB |
3027 | .probe = mv643xx_eth_probe, |
3028 | .remove = mv643xx_eth_remove, | |
3029 | .shutdown = mv643xx_eth_shutdown, | |
c9df406f | 3030 | .driver = { |
fc32b0e2 | 3031 | .name = MV643XX_ETH_NAME, |
c9df406f LB |
3032 | .owner = THIS_MODULE, |
3033 | }, | |
3034 | }; | |
3035 | ||
e5371493 | 3036 | static int __init mv643xx_eth_init_module(void) |
d0412d96 | 3037 | { |
c9df406f | 3038 | int rc; |
d0412d96 | 3039 | |
c9df406f LB |
3040 | rc = platform_driver_register(&mv643xx_eth_shared_driver); |
3041 | if (!rc) { | |
3042 | rc = platform_driver_register(&mv643xx_eth_driver); | |
3043 | if (rc) | |
3044 | platform_driver_unregister(&mv643xx_eth_shared_driver); | |
3045 | } | |
fc32b0e2 | 3046 | |
c9df406f | 3047 | return rc; |
d0412d96 | 3048 | } |
fc32b0e2 | 3049 | module_init(mv643xx_eth_init_module); |
d0412d96 | 3050 | |
e5371493 | 3051 | static void __exit mv643xx_eth_cleanup_module(void) |
d0412d96 | 3052 | { |
c9df406f LB |
3053 | platform_driver_unregister(&mv643xx_eth_driver); |
3054 | platform_driver_unregister(&mv643xx_eth_shared_driver); | |
d0412d96 | 3055 | } |
e5371493 | 3056 | module_exit(mv643xx_eth_cleanup_module); |
1da177e4 | 3057 | |
45675bc6 LB |
3058 | MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, " |
3059 | "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek"); | |
c9df406f | 3060 | MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); |
fc32b0e2 | 3061 | MODULE_LICENSE("GPL"); |
c9df406f | 3062 | MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); |
fc32b0e2 | 3063 | MODULE_ALIAS("platform:" MV643XX_ETH_NAME); |