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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 | |
1da177e4 LT |
38 | #include <linux/init.h> |
39 | #include <linux/dma-mapping.h> | |
b6298c22 | 40 | #include <linux/in.h> |
1da177e4 LT |
41 | #include <linux/tcp.h> |
42 | #include <linux/udp.h> | |
43 | #include <linux/etherdevice.h> | |
1da177e4 LT |
44 | #include <linux/delay.h> |
45 | #include <linux/ethtool.h> | |
d052d1be | 46 | #include <linux/platform_device.h> |
fbd6a754 LB |
47 | #include <linux/module.h> |
48 | #include <linux/kernel.h> | |
49 | #include <linux/spinlock.h> | |
50 | #include <linux/workqueue.h> | |
51 | #include <linux/mii.h> | |
fbd6a754 | 52 | #include <linux/mv643xx_eth.h> |
1da177e4 LT |
53 | #include <asm/io.h> |
54 | #include <asm/types.h> | |
1da177e4 | 55 | #include <asm/system.h> |
fbd6a754 | 56 | |
e5371493 | 57 | static char mv643xx_eth_driver_name[] = "mv643xx_eth"; |
c4560318 | 58 | static char mv643xx_eth_driver_version[] = "1.3"; |
c9df406f | 59 | |
e5371493 | 60 | #define MV643XX_ETH_TX_FAST_REFILL |
fbd6a754 | 61 | |
fbd6a754 LB |
62 | /* |
63 | * Registers shared between all ports. | |
64 | */ | |
3cb4667c LB |
65 | #define PHY_ADDR 0x0000 |
66 | #define SMI_REG 0x0004 | |
45c5d3bc LB |
67 | #define SMI_BUSY 0x10000000 |
68 | #define SMI_READ_VALID 0x08000000 | |
69 | #define SMI_OPCODE_READ 0x04000000 | |
70 | #define SMI_OPCODE_WRITE 0x00000000 | |
71 | #define ERR_INT_CAUSE 0x0080 | |
72 | #define ERR_INT_SMI_DONE 0x00000010 | |
73 | #define ERR_INT_MASK 0x0084 | |
3cb4667c LB |
74 | #define WINDOW_BASE(w) (0x0200 + ((w) << 3)) |
75 | #define WINDOW_SIZE(w) (0x0204 + ((w) << 3)) | |
76 | #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2)) | |
77 | #define WINDOW_BAR_ENABLE 0x0290 | |
78 | #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4)) | |
fbd6a754 LB |
79 | |
80 | /* | |
81 | * Per-port registers. | |
82 | */ | |
3cb4667c | 83 | #define PORT_CONFIG(p) (0x0400 + ((p) << 10)) |
d9a073ea | 84 | #define UNICAST_PROMISCUOUS_MODE 0x00000001 |
3cb4667c LB |
85 | #define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10)) |
86 | #define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10)) | |
87 | #define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10)) | |
88 | #define SDMA_CONFIG(p) (0x041c + ((p) << 10)) | |
89 | #define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10)) | |
90 | #define PORT_STATUS(p) (0x0444 + ((p) << 10)) | |
a2a41689 | 91 | #define TX_FIFO_EMPTY 0x00000400 |
ae9ae064 | 92 | #define TX_IN_PROGRESS 0x00000080 |
2f7eb47a LB |
93 | #define PORT_SPEED_MASK 0x00000030 |
94 | #define PORT_SPEED_1000 0x00000010 | |
95 | #define PORT_SPEED_100 0x00000020 | |
96 | #define PORT_SPEED_10 0x00000000 | |
97 | #define FLOW_CONTROL_ENABLED 0x00000008 | |
98 | #define FULL_DUPLEX 0x00000004 | |
81600eea | 99 | #define LINK_UP 0x00000002 |
3cb4667c | 100 | #define TXQ_COMMAND(p) (0x0448 + ((p) << 10)) |
89df5fdc LB |
101 | #define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10)) |
102 | #define TX_BW_RATE(p) (0x0450 + ((p) << 10)) | |
3cb4667c | 103 | #define TX_BW_MTU(p) (0x0458 + ((p) << 10)) |
89df5fdc | 104 | #define TX_BW_BURST(p) (0x045c + ((p) << 10)) |
3cb4667c | 105 | #define INT_CAUSE(p) (0x0460 + ((p) << 10)) |
8fa89bf5 | 106 | #define INT_TX_END_0 0x00080000 |
226bb6b7 | 107 | #define INT_TX_END 0x07f80000 |
befefe21 | 108 | #define INT_RX 0x000003fc |
073a345c | 109 | #define INT_EXT 0x00000002 |
3cb4667c | 110 | #define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10)) |
befefe21 LB |
111 | #define INT_EXT_LINK_PHY 0x00110000 |
112 | #define INT_EXT_TX 0x000000ff | |
3cb4667c LB |
113 | #define INT_MASK(p) (0x0468 + ((p) << 10)) |
114 | #define INT_MASK_EXT(p) (0x046c + ((p) << 10)) | |
115 | #define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10)) | |
1e881592 LB |
116 | #define TXQ_FIX_PRIO_CONF_MOVED(p) (0x04dc + ((p) << 10)) |
117 | #define TX_BW_RATE_MOVED(p) (0x04e0 + ((p) << 10)) | |
118 | #define TX_BW_MTU_MOVED(p) (0x04e8 + ((p) << 10)) | |
119 | #define TX_BW_BURST_MOVED(p) (0x04ec + ((p) << 10)) | |
64da80a2 | 120 | #define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4)) |
3cb4667c | 121 | #define RXQ_COMMAND(p) (0x0680 + ((p) << 10)) |
3d6b35bc LB |
122 | #define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2)) |
123 | #define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4)) | |
124 | #define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4)) | |
125 | #define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4)) | |
3cb4667c LB |
126 | #define MIB_COUNTERS(p) (0x1000 + ((p) << 7)) |
127 | #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10)) | |
128 | #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10)) | |
129 | #define UNICAST_TABLE(p) (0x1600 + ((p) << 10)) | |
fbd6a754 | 130 | |
2679a550 LB |
131 | |
132 | /* | |
133 | * SDMA configuration register. | |
134 | */ | |
cd4ccf76 | 135 | #define RX_BURST_SIZE_16_64BIT (4 << 1) |
fbd6a754 | 136 | #define BLM_RX_NO_SWAP (1 << 4) |
fbd6a754 | 137 | #define BLM_TX_NO_SWAP (1 << 5) |
cd4ccf76 | 138 | #define TX_BURST_SIZE_16_64BIT (4 << 22) |
fbd6a754 LB |
139 | |
140 | #if defined(__BIG_ENDIAN) | |
141 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ | |
cd4ccf76 LB |
142 | RX_BURST_SIZE_16_64BIT | \ |
143 | TX_BURST_SIZE_16_64BIT | |
fbd6a754 LB |
144 | #elif defined(__LITTLE_ENDIAN) |
145 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ | |
cd4ccf76 | 146 | RX_BURST_SIZE_16_64BIT | \ |
fbd6a754 LB |
147 | BLM_RX_NO_SWAP | \ |
148 | BLM_TX_NO_SWAP | \ | |
cd4ccf76 | 149 | TX_BURST_SIZE_16_64BIT |
fbd6a754 LB |
150 | #else |
151 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined | |
152 | #endif | |
153 | ||
2beff77b LB |
154 | |
155 | /* | |
156 | * Port serial control register. | |
157 | */ | |
158 | #define SET_MII_SPEED_TO_100 (1 << 24) | |
159 | #define SET_GMII_SPEED_TO_1000 (1 << 23) | |
160 | #define SET_FULL_DUPLEX_MODE (1 << 21) | |
fbd6a754 | 161 | #define MAX_RX_PACKET_9700BYTE (5 << 17) |
2beff77b LB |
162 | #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13) |
163 | #define DO_NOT_FORCE_LINK_FAIL (1 << 10) | |
164 | #define SERIAL_PORT_CONTROL_RESERVED (1 << 9) | |
165 | #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3) | |
166 | #define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2) | |
167 | #define FORCE_LINK_PASS (1 << 1) | |
168 | #define SERIAL_PORT_ENABLE (1 << 0) | |
fbd6a754 | 169 | |
cc9754b3 LB |
170 | #define DEFAULT_RX_QUEUE_SIZE 400 |
171 | #define DEFAULT_TX_QUEUE_SIZE 800 | |
fbd6a754 | 172 | |
fbd6a754 | 173 | |
7ca72a3b LB |
174 | /* |
175 | * RX/TX descriptors. | |
fbd6a754 LB |
176 | */ |
177 | #if defined(__BIG_ENDIAN) | |
cc9754b3 | 178 | struct rx_desc { |
fbd6a754 LB |
179 | u16 byte_cnt; /* Descriptor buffer byte count */ |
180 | u16 buf_size; /* Buffer size */ | |
181 | u32 cmd_sts; /* Descriptor command status */ | |
182 | u32 next_desc_ptr; /* Next descriptor pointer */ | |
183 | u32 buf_ptr; /* Descriptor buffer pointer */ | |
184 | }; | |
185 | ||
cc9754b3 | 186 | struct tx_desc { |
fbd6a754 LB |
187 | u16 byte_cnt; /* buffer byte count */ |
188 | u16 l4i_chk; /* CPU provided TCP checksum */ | |
189 | u32 cmd_sts; /* Command/status field */ | |
190 | u32 next_desc_ptr; /* Pointer to next descriptor */ | |
191 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ | |
192 | }; | |
193 | #elif defined(__LITTLE_ENDIAN) | |
cc9754b3 | 194 | struct rx_desc { |
fbd6a754 LB |
195 | u32 cmd_sts; /* Descriptor command status */ |
196 | u16 buf_size; /* Buffer size */ | |
197 | u16 byte_cnt; /* Descriptor buffer byte count */ | |
198 | u32 buf_ptr; /* Descriptor buffer pointer */ | |
199 | u32 next_desc_ptr; /* Next descriptor pointer */ | |
200 | }; | |
201 | ||
cc9754b3 | 202 | struct tx_desc { |
fbd6a754 LB |
203 | u32 cmd_sts; /* Command/status field */ |
204 | u16 l4i_chk; /* CPU provided TCP checksum */ | |
205 | u16 byte_cnt; /* buffer byte count */ | |
206 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ | |
207 | u32 next_desc_ptr; /* Pointer to next descriptor */ | |
208 | }; | |
209 | #else | |
210 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined | |
211 | #endif | |
212 | ||
7ca72a3b | 213 | /* RX & TX descriptor command */ |
cc9754b3 | 214 | #define BUFFER_OWNED_BY_DMA 0x80000000 |
7ca72a3b LB |
215 | |
216 | /* RX & TX descriptor status */ | |
cc9754b3 | 217 | #define ERROR_SUMMARY 0x00000001 |
7ca72a3b LB |
218 | |
219 | /* RX descriptor status */ | |
cc9754b3 LB |
220 | #define LAYER_4_CHECKSUM_OK 0x40000000 |
221 | #define RX_ENABLE_INTERRUPT 0x20000000 | |
222 | #define RX_FIRST_DESC 0x08000000 | |
223 | #define RX_LAST_DESC 0x04000000 | |
7ca72a3b LB |
224 | |
225 | /* TX descriptor command */ | |
cc9754b3 LB |
226 | #define TX_ENABLE_INTERRUPT 0x00800000 |
227 | #define GEN_CRC 0x00400000 | |
228 | #define TX_FIRST_DESC 0x00200000 | |
229 | #define TX_LAST_DESC 0x00100000 | |
230 | #define ZERO_PADDING 0x00080000 | |
231 | #define GEN_IP_V4_CHECKSUM 0x00040000 | |
232 | #define GEN_TCP_UDP_CHECKSUM 0x00020000 | |
233 | #define UDP_FRAME 0x00010000 | |
e32b6617 LB |
234 | #define MAC_HDR_EXTRA_4_BYTES 0x00008000 |
235 | #define MAC_HDR_EXTRA_8_BYTES 0x00000200 | |
7ca72a3b | 236 | |
cc9754b3 | 237 | #define TX_IHL_SHIFT 11 |
7ca72a3b LB |
238 | |
239 | ||
c9df406f | 240 | /* global *******************************************************************/ |
e5371493 | 241 | struct mv643xx_eth_shared_private { |
fc32b0e2 LB |
242 | /* |
243 | * Ethernet controller base address. | |
244 | */ | |
cc9754b3 | 245 | void __iomem *base; |
c9df406f | 246 | |
fc0eb9f2 LB |
247 | /* |
248 | * Points at the right SMI instance to use. | |
249 | */ | |
250 | struct mv643xx_eth_shared_private *smi; | |
251 | ||
fc32b0e2 LB |
252 | /* |
253 | * Protects access to SMI_REG, which is shared between ports. | |
254 | */ | |
2b3ba0e3 | 255 | struct mutex phy_lock; |
c9df406f | 256 | |
45c5d3bc LB |
257 | /* |
258 | * If we have access to the error interrupt pin (which is | |
259 | * somewhat misnamed as it not only reflects internal errors | |
260 | * but also reflects SMI completion), use that to wait for | |
261 | * SMI access completion instead of polling the SMI busy bit. | |
262 | */ | |
263 | int err_interrupt; | |
264 | wait_queue_head_t smi_busy_wait; | |
265 | ||
fc32b0e2 LB |
266 | /* |
267 | * Per-port MBUS window access register value. | |
268 | */ | |
c9df406f LB |
269 | u32 win_protect; |
270 | ||
fc32b0e2 LB |
271 | /* |
272 | * Hardware-specific parameters. | |
273 | */ | |
c9df406f | 274 | unsigned int t_clk; |
773fc3ee | 275 | int extended_rx_coal_limit; |
1e881592 | 276 | int tx_bw_control_moved; |
c9df406f LB |
277 | }; |
278 | ||
279 | ||
280 | /* per-port *****************************************************************/ | |
e5371493 | 281 | struct mib_counters { |
fbd6a754 LB |
282 | u64 good_octets_received; |
283 | u32 bad_octets_received; | |
284 | u32 internal_mac_transmit_err; | |
285 | u32 good_frames_received; | |
286 | u32 bad_frames_received; | |
287 | u32 broadcast_frames_received; | |
288 | u32 multicast_frames_received; | |
289 | u32 frames_64_octets; | |
290 | u32 frames_65_to_127_octets; | |
291 | u32 frames_128_to_255_octets; | |
292 | u32 frames_256_to_511_octets; | |
293 | u32 frames_512_to_1023_octets; | |
294 | u32 frames_1024_to_max_octets; | |
295 | u64 good_octets_sent; | |
296 | u32 good_frames_sent; | |
297 | u32 excessive_collision; | |
298 | u32 multicast_frames_sent; | |
299 | u32 broadcast_frames_sent; | |
300 | u32 unrec_mac_control_received; | |
301 | u32 fc_sent; | |
302 | u32 good_fc_received; | |
303 | u32 bad_fc_received; | |
304 | u32 undersize_received; | |
305 | u32 fragments_received; | |
306 | u32 oversize_received; | |
307 | u32 jabber_received; | |
308 | u32 mac_receive_error; | |
309 | u32 bad_crc_event; | |
310 | u32 collision; | |
311 | u32 late_collision; | |
312 | }; | |
313 | ||
8a578111 | 314 | struct rx_queue { |
64da80a2 LB |
315 | int index; |
316 | ||
8a578111 LB |
317 | int rx_ring_size; |
318 | ||
319 | int rx_desc_count; | |
320 | int rx_curr_desc; | |
321 | int rx_used_desc; | |
322 | ||
323 | struct rx_desc *rx_desc_area; | |
324 | dma_addr_t rx_desc_dma; | |
325 | int rx_desc_area_size; | |
326 | struct sk_buff **rx_skb; | |
8a578111 LB |
327 | }; |
328 | ||
13d64285 | 329 | struct tx_queue { |
3d6b35bc LB |
330 | int index; |
331 | ||
13d64285 | 332 | int tx_ring_size; |
fbd6a754 | 333 | |
13d64285 LB |
334 | int tx_desc_count; |
335 | int tx_curr_desc; | |
336 | int tx_used_desc; | |
fbd6a754 | 337 | |
5daffe94 | 338 | struct tx_desc *tx_desc_area; |
fbd6a754 LB |
339 | dma_addr_t tx_desc_dma; |
340 | int tx_desc_area_size; | |
341 | struct sk_buff **tx_skb; | |
13d64285 LB |
342 | }; |
343 | ||
344 | struct mv643xx_eth_private { | |
345 | struct mv643xx_eth_shared_private *shared; | |
fc32b0e2 | 346 | int port_num; |
13d64285 | 347 | |
fc32b0e2 | 348 | struct net_device *dev; |
fbd6a754 | 349 | |
fc32b0e2 | 350 | int phy_addr; |
fbd6a754 | 351 | |
fbd6a754 | 352 | spinlock_t lock; |
fbd6a754 | 353 | |
fc32b0e2 LB |
354 | struct mib_counters mib_counters; |
355 | struct work_struct tx_timeout_task; | |
fbd6a754 | 356 | struct mii_if_info mii; |
8a578111 LB |
357 | |
358 | /* | |
359 | * RX state. | |
360 | */ | |
361 | int default_rx_ring_size; | |
362 | unsigned long rx_desc_sram_addr; | |
363 | int rx_desc_sram_size; | |
f7981c1c | 364 | int rxq_count; |
8a578111 | 365 | struct napi_struct napi; |
2257e05c | 366 | struct timer_list rx_oom; |
64da80a2 | 367 | struct rx_queue rxq[8]; |
13d64285 LB |
368 | |
369 | /* | |
370 | * TX state. | |
371 | */ | |
372 | int default_tx_ring_size; | |
373 | unsigned long tx_desc_sram_addr; | |
374 | int tx_desc_sram_size; | |
f7981c1c | 375 | int txq_count; |
3d6b35bc | 376 | struct tx_queue txq[8]; |
13d64285 LB |
377 | #ifdef MV643XX_ETH_TX_FAST_REFILL |
378 | int tx_clean_threshold; | |
379 | #endif | |
fbd6a754 | 380 | }; |
1da177e4 | 381 | |
fbd6a754 | 382 | |
c9df406f | 383 | /* port register accessors **************************************************/ |
e5371493 | 384 | static inline u32 rdl(struct mv643xx_eth_private *mp, int offset) |
c9df406f | 385 | { |
cc9754b3 | 386 | return readl(mp->shared->base + offset); |
c9df406f | 387 | } |
fbd6a754 | 388 | |
e5371493 | 389 | static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data) |
c9df406f | 390 | { |
cc9754b3 | 391 | writel(data, mp->shared->base + offset); |
c9df406f | 392 | } |
fbd6a754 | 393 | |
fbd6a754 | 394 | |
c9df406f | 395 | /* rxq/txq helper functions *************************************************/ |
8a578111 | 396 | static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq) |
c9df406f | 397 | { |
64da80a2 | 398 | return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]); |
c9df406f | 399 | } |
fbd6a754 | 400 | |
13d64285 LB |
401 | static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq) |
402 | { | |
3d6b35bc | 403 | return container_of(txq, struct mv643xx_eth_private, txq[txq->index]); |
13d64285 LB |
404 | } |
405 | ||
8a578111 | 406 | static void rxq_enable(struct rx_queue *rxq) |
c9df406f | 407 | { |
8a578111 | 408 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
64da80a2 | 409 | wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index); |
8a578111 | 410 | } |
1da177e4 | 411 | |
8a578111 LB |
412 | static void rxq_disable(struct rx_queue *rxq) |
413 | { | |
414 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); | |
64da80a2 | 415 | u8 mask = 1 << rxq->index; |
1da177e4 | 416 | |
8a578111 LB |
417 | wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8); |
418 | while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask) | |
419 | udelay(10); | |
c9df406f LB |
420 | } |
421 | ||
6b368f68 LB |
422 | static void txq_reset_hw_ptr(struct tx_queue *txq) |
423 | { | |
424 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
425 | int off = TXQ_CURRENT_DESC_PTR(mp->port_num, txq->index); | |
426 | u32 addr; | |
427 | ||
428 | addr = (u32)txq->tx_desc_dma; | |
429 | addr += txq->tx_curr_desc * sizeof(struct tx_desc); | |
430 | wrl(mp, off, addr); | |
431 | } | |
432 | ||
13d64285 | 433 | static void txq_enable(struct tx_queue *txq) |
1da177e4 | 434 | { |
13d64285 | 435 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
3d6b35bc | 436 | wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index); |
1da177e4 LT |
437 | } |
438 | ||
13d64285 | 439 | static void txq_disable(struct tx_queue *txq) |
1da177e4 | 440 | { |
13d64285 | 441 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
3d6b35bc | 442 | u8 mask = 1 << txq->index; |
c9df406f | 443 | |
13d64285 LB |
444 | wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8); |
445 | while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask) | |
446 | udelay(10); | |
447 | } | |
448 | ||
449 | static void __txq_maybe_wake(struct tx_queue *txq) | |
450 | { | |
451 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
e5ef1de1 | 452 | struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index); |
3d6b35bc | 453 | |
17cd0a59 | 454 | if (txq->tx_ring_size - txq->tx_desc_count >= MAX_SKB_FRAGS + 1) |
e5ef1de1 | 455 | netif_tx_wake_queue(nq); |
1da177e4 LT |
456 | } |
457 | ||
c9df406f LB |
458 | |
459 | /* rx ***********************************************************************/ | |
13d64285 | 460 | static void txq_reclaim(struct tx_queue *txq, int force); |
c9df406f | 461 | |
2257e05c | 462 | static int rxq_refill(struct rx_queue *rxq, int budget, int *oom) |
1da177e4 | 463 | { |
2257e05c LB |
464 | int skb_size; |
465 | int refilled; | |
1da177e4 | 466 | |
2257e05c LB |
467 | /* |
468 | * Reserve 2+14 bytes for an ethernet header (the hardware | |
469 | * automatically prepends 2 bytes of dummy data to each | |
470 | * received packet), 16 bytes for up to four VLAN tags, and | |
471 | * 4 bytes for the trailing FCS -- 36 bytes total. | |
472 | */ | |
473 | skb_size = rxq_to_mp(rxq)->dev->mtu + 36; | |
474 | ||
475 | /* | |
476 | * Make sure that the skb size is a multiple of 8 bytes, as | |
477 | * the lower three bits of the receive descriptor's buffer | |
478 | * size field are ignored by the hardware. | |
479 | */ | |
480 | skb_size = (skb_size + 7) & ~7; | |
c0d0f2ca | 481 | |
2257e05c LB |
482 | refilled = 0; |
483 | while (refilled < budget && rxq->rx_desc_count < rxq->rx_ring_size) { | |
de34f225 LB |
484 | struct sk_buff *skb; |
485 | int unaligned; | |
486 | int rx; | |
487 | ||
8a578111 | 488 | skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1); |
2257e05c LB |
489 | if (skb == NULL) { |
490 | *oom = 1; | |
1da177e4 | 491 | break; |
2257e05c | 492 | } |
de34f225 | 493 | |
908b637f | 494 | unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); |
b44cd572 | 495 | if (unaligned) |
908b637f | 496 | skb_reserve(skb, dma_get_cache_alignment() - unaligned); |
de34f225 | 497 | |
2257e05c | 498 | refilled++; |
8a578111 | 499 | rxq->rx_desc_count++; |
9da78745 LB |
500 | |
501 | rx = rxq->rx_used_desc++; | |
502 | if (rxq->rx_used_desc == rxq->rx_ring_size) | |
503 | rxq->rx_used_desc = 0; | |
de34f225 | 504 | |
8a578111 LB |
505 | rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data, |
506 | skb_size, DMA_FROM_DEVICE); | |
507 | rxq->rx_desc_area[rx].buf_size = skb_size; | |
508 | rxq->rx_skb[rx] = skb; | |
de34f225 | 509 | wmb(); |
8a578111 | 510 | rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA | |
de34f225 LB |
511 | RX_ENABLE_INTERRUPT; |
512 | wmb(); | |
513 | ||
fc32b0e2 LB |
514 | /* |
515 | * The hardware automatically prepends 2 bytes of | |
516 | * dummy data to each received packet, so that the | |
517 | * IP header ends up 16-byte aligned. | |
518 | */ | |
519 | skb_reserve(skb, 2); | |
1da177e4 | 520 | } |
de34f225 | 521 | |
2257e05c | 522 | return refilled; |
1da177e4 LT |
523 | } |
524 | ||
8a578111 | 525 | static int rxq_process(struct rx_queue *rxq, int budget) |
1da177e4 | 526 | { |
8a578111 LB |
527 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
528 | struct net_device_stats *stats = &mp->dev->stats; | |
529 | int rx; | |
1da177e4 | 530 | |
8a578111 | 531 | rx = 0; |
9e1f3772 | 532 | while (rx < budget && rxq->rx_desc_count) { |
fc32b0e2 | 533 | struct rx_desc *rx_desc; |
96587661 | 534 | unsigned int cmd_sts; |
fc32b0e2 | 535 | struct sk_buff *skb; |
ff561eef | 536 | |
8a578111 | 537 | rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc]; |
1da177e4 | 538 | |
96587661 | 539 | cmd_sts = rx_desc->cmd_sts; |
2257e05c | 540 | if (cmd_sts & BUFFER_OWNED_BY_DMA) |
96587661 | 541 | break; |
96587661 | 542 | rmb(); |
1da177e4 | 543 | |
8a578111 LB |
544 | skb = rxq->rx_skb[rxq->rx_curr_desc]; |
545 | rxq->rx_skb[rxq->rx_curr_desc] = NULL; | |
ff561eef | 546 | |
9da78745 LB |
547 | rxq->rx_curr_desc++; |
548 | if (rxq->rx_curr_desc == rxq->rx_ring_size) | |
549 | rxq->rx_curr_desc = 0; | |
ff561eef | 550 | |
3a499481 | 551 | dma_unmap_single(NULL, rx_desc->buf_ptr, |
abe78717 | 552 | rx_desc->buf_size, DMA_FROM_DEVICE); |
8a578111 LB |
553 | rxq->rx_desc_count--; |
554 | rx++; | |
b1dd9ca1 | 555 | |
468d09f8 DF |
556 | /* |
557 | * Update statistics. | |
fc32b0e2 LB |
558 | * |
559 | * Note that the descriptor byte count includes 2 dummy | |
560 | * bytes automatically inserted by the hardware at the | |
561 | * start of the packet (which we don't count), and a 4 | |
562 | * byte CRC at the end of the packet (which we do count). | |
468d09f8 | 563 | */ |
1da177e4 | 564 | stats->rx_packets++; |
fc32b0e2 | 565 | stats->rx_bytes += rx_desc->byte_cnt - 2; |
96587661 | 566 | |
1da177e4 | 567 | /* |
fc32b0e2 LB |
568 | * In case we received a packet without first / last bits |
569 | * on, or the error summary bit is set, the packet needs | |
570 | * to be dropped. | |
1da177e4 | 571 | */ |
96587661 | 572 | if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != |
cc9754b3 | 573 | (RX_FIRST_DESC | RX_LAST_DESC)) |
96587661 | 574 | || (cmd_sts & ERROR_SUMMARY)) { |
1da177e4 | 575 | stats->rx_dropped++; |
fc32b0e2 | 576 | |
96587661 | 577 | if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != |
cc9754b3 | 578 | (RX_FIRST_DESC | RX_LAST_DESC)) { |
1da177e4 | 579 | if (net_ratelimit()) |
fc32b0e2 LB |
580 | dev_printk(KERN_ERR, &mp->dev->dev, |
581 | "received packet spanning " | |
582 | "multiple descriptors\n"); | |
1da177e4 | 583 | } |
fc32b0e2 | 584 | |
96587661 | 585 | if (cmd_sts & ERROR_SUMMARY) |
1da177e4 LT |
586 | stats->rx_errors++; |
587 | ||
78fff83b | 588 | dev_kfree_skb(skb); |
1da177e4 LT |
589 | } else { |
590 | /* | |
591 | * The -4 is for the CRC in the trailer of the | |
592 | * received packet | |
593 | */ | |
fc32b0e2 | 594 | skb_put(skb, rx_desc->byte_cnt - 2 - 4); |
1da177e4 | 595 | |
96587661 | 596 | if (cmd_sts & LAYER_4_CHECKSUM_OK) { |
1da177e4 LT |
597 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
598 | skb->csum = htons( | |
96587661 | 599 | (cmd_sts & 0x0007fff8) >> 3); |
1da177e4 | 600 | } |
8a578111 | 601 | skb->protocol = eth_type_trans(skb, mp->dev); |
1da177e4 | 602 | netif_receive_skb(skb); |
1da177e4 | 603 | } |
fc32b0e2 | 604 | |
8a578111 | 605 | mp->dev->last_rx = jiffies; |
1da177e4 | 606 | } |
fc32b0e2 | 607 | |
8a578111 | 608 | return rx; |
1da177e4 LT |
609 | } |
610 | ||
e5371493 | 611 | static int mv643xx_eth_poll(struct napi_struct *napi, int budget) |
d0412d96 | 612 | { |
8a578111 | 613 | struct mv643xx_eth_private *mp; |
2257e05c LB |
614 | int work_done; |
615 | int oom; | |
64da80a2 | 616 | int i; |
8a578111 LB |
617 | |
618 | mp = container_of(napi, struct mv643xx_eth_private, napi); | |
d0412d96 | 619 | |
e5371493 | 620 | #ifdef MV643XX_ETH_TX_FAST_REFILL |
c9df406f | 621 | if (++mp->tx_clean_threshold > 5) { |
c9df406f | 622 | mp->tx_clean_threshold = 0; |
f7981c1c LB |
623 | for (i = 0; i < mp->txq_count; i++) |
624 | txq_reclaim(mp->txq + i, 0); | |
4dfc1c87 | 625 | |
4fdeca3f LB |
626 | spin_lock_irq(&mp->lock); |
627 | __txq_maybe_wake(mp->txq); | |
628 | spin_unlock_irq(&mp->lock); | |
d0412d96 | 629 | } |
c9df406f | 630 | #endif |
d0412d96 | 631 | |
2257e05c LB |
632 | work_done = 0; |
633 | oom = 0; | |
f7981c1c LB |
634 | for (i = mp->rxq_count - 1; work_done < budget && i >= 0; i--) { |
635 | struct rx_queue *rxq = mp->rxq + i; | |
d0412d96 | 636 | |
f7981c1c LB |
637 | work_done += rxq_process(rxq, budget - work_done); |
638 | work_done += rxq_refill(rxq, budget - work_done, &oom); | |
2257e05c LB |
639 | } |
640 | ||
641 | if (work_done < budget) { | |
642 | if (oom) | |
643 | mod_timer(&mp->rx_oom, jiffies + (HZ / 10)); | |
8a578111 | 644 | netif_rx_complete(mp->dev, napi); |
226bb6b7 | 645 | wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); |
d0412d96 | 646 | } |
c9df406f | 647 | |
2257e05c LB |
648 | return work_done; |
649 | } | |
650 | ||
651 | static inline void oom_timer_wrapper(unsigned long data) | |
652 | { | |
653 | struct mv643xx_eth_private *mp = (void *)data; | |
654 | ||
655 | napi_schedule(&mp->napi); | |
d0412d96 JC |
656 | } |
657 | ||
c9df406f LB |
658 | |
659 | /* tx ***********************************************************************/ | |
c9df406f | 660 | static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) |
1da177e4 | 661 | { |
13d64285 | 662 | int frag; |
1da177e4 | 663 | |
c9df406f | 664 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { |
13d64285 LB |
665 | skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag]; |
666 | if (fragp->size <= 8 && fragp->page_offset & 7) | |
c9df406f | 667 | return 1; |
1da177e4 | 668 | } |
13d64285 | 669 | |
c9df406f LB |
670 | return 0; |
671 | } | |
7303fde8 | 672 | |
13d64285 | 673 | static int txq_alloc_desc_index(struct tx_queue *txq) |
c9df406f LB |
674 | { |
675 | int tx_desc_curr; | |
d0412d96 | 676 | |
13d64285 | 677 | BUG_ON(txq->tx_desc_count >= txq->tx_ring_size); |
1da177e4 | 678 | |
9da78745 LB |
679 | tx_desc_curr = txq->tx_curr_desc++; |
680 | if (txq->tx_curr_desc == txq->tx_ring_size) | |
681 | txq->tx_curr_desc = 0; | |
e4d00fa9 | 682 | |
13d64285 | 683 | BUG_ON(txq->tx_curr_desc == txq->tx_used_desc); |
468d09f8 | 684 | |
c9df406f LB |
685 | return tx_desc_curr; |
686 | } | |
468d09f8 | 687 | |
13d64285 | 688 | static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) |
c9df406f | 689 | { |
13d64285 | 690 | int nr_frags = skb_shinfo(skb)->nr_frags; |
c9df406f | 691 | int frag; |
1da177e4 | 692 | |
13d64285 LB |
693 | for (frag = 0; frag < nr_frags; frag++) { |
694 | skb_frag_t *this_frag; | |
695 | int tx_index; | |
696 | struct tx_desc *desc; | |
697 | ||
698 | this_frag = &skb_shinfo(skb)->frags[frag]; | |
699 | tx_index = txq_alloc_desc_index(txq); | |
700 | desc = &txq->tx_desc_area[tx_index]; | |
701 | ||
702 | /* | |
703 | * The last fragment will generate an interrupt | |
704 | * which will free the skb on TX completion. | |
705 | */ | |
706 | if (frag == nr_frags - 1) { | |
707 | desc->cmd_sts = BUFFER_OWNED_BY_DMA | | |
708 | ZERO_PADDING | TX_LAST_DESC | | |
709 | TX_ENABLE_INTERRUPT; | |
710 | txq->tx_skb[tx_index] = skb; | |
711 | } else { | |
712 | desc->cmd_sts = BUFFER_OWNED_BY_DMA; | |
713 | txq->tx_skb[tx_index] = NULL; | |
714 | } | |
715 | ||
c9df406f LB |
716 | desc->l4i_chk = 0; |
717 | desc->byte_cnt = this_frag->size; | |
718 | desc->buf_ptr = dma_map_page(NULL, this_frag->page, | |
719 | this_frag->page_offset, | |
720 | this_frag->size, | |
721 | DMA_TO_DEVICE); | |
722 | } | |
1da177e4 LT |
723 | } |
724 | ||
c9df406f LB |
725 | static inline __be16 sum16_as_be(__sum16 sum) |
726 | { | |
727 | return (__force __be16)sum; | |
728 | } | |
1da177e4 | 729 | |
13d64285 | 730 | static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb) |
1da177e4 | 731 | { |
8fa89bf5 | 732 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
13d64285 | 733 | int nr_frags = skb_shinfo(skb)->nr_frags; |
c9df406f | 734 | int tx_index; |
cc9754b3 | 735 | struct tx_desc *desc; |
c9df406f LB |
736 | u32 cmd_sts; |
737 | int length; | |
1da177e4 | 738 | |
cc9754b3 | 739 | cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA; |
1da177e4 | 740 | |
13d64285 LB |
741 | tx_index = txq_alloc_desc_index(txq); |
742 | desc = &txq->tx_desc_area[tx_index]; | |
c9df406f LB |
743 | |
744 | if (nr_frags) { | |
13d64285 | 745 | txq_submit_frag_skb(txq, skb); |
c9df406f LB |
746 | |
747 | length = skb_headlen(skb); | |
13d64285 | 748 | txq->tx_skb[tx_index] = NULL; |
c9df406f | 749 | } else { |
cc9754b3 | 750 | cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT; |
c9df406f | 751 | length = skb->len; |
13d64285 | 752 | txq->tx_skb[tx_index] = skb; |
c9df406f LB |
753 | } |
754 | ||
755 | desc->byte_cnt = length; | |
756 | desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE); | |
757 | ||
758 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
e32b6617 LB |
759 | int mac_hdr_len; |
760 | ||
761 | BUG_ON(skb->protocol != htons(ETH_P_IP) && | |
762 | skb->protocol != htons(ETH_P_8021Q)); | |
c9df406f | 763 | |
cc9754b3 LB |
764 | cmd_sts |= GEN_TCP_UDP_CHECKSUM | |
765 | GEN_IP_V4_CHECKSUM | | |
766 | ip_hdr(skb)->ihl << TX_IHL_SHIFT; | |
c9df406f | 767 | |
e32b6617 LB |
768 | mac_hdr_len = (void *)ip_hdr(skb) - (void *)skb->data; |
769 | switch (mac_hdr_len - ETH_HLEN) { | |
770 | case 0: | |
771 | break; | |
772 | case 4: | |
773 | cmd_sts |= MAC_HDR_EXTRA_4_BYTES; | |
774 | break; | |
775 | case 8: | |
776 | cmd_sts |= MAC_HDR_EXTRA_8_BYTES; | |
777 | break; | |
778 | case 12: | |
779 | cmd_sts |= MAC_HDR_EXTRA_4_BYTES; | |
780 | cmd_sts |= MAC_HDR_EXTRA_8_BYTES; | |
781 | break; | |
782 | default: | |
783 | if (net_ratelimit()) | |
784 | dev_printk(KERN_ERR, &txq_to_mp(txq)->dev->dev, | |
785 | "mac header length is %d?!\n", mac_hdr_len); | |
786 | break; | |
787 | } | |
788 | ||
c9df406f LB |
789 | switch (ip_hdr(skb)->protocol) { |
790 | case IPPROTO_UDP: | |
cc9754b3 | 791 | cmd_sts |= UDP_FRAME; |
c9df406f LB |
792 | desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); |
793 | break; | |
794 | case IPPROTO_TCP: | |
795 | desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); | |
796 | break; | |
797 | default: | |
798 | BUG(); | |
799 | } | |
800 | } else { | |
801 | /* Errata BTS #50, IHL must be 5 if no HW checksum */ | |
cc9754b3 | 802 | cmd_sts |= 5 << TX_IHL_SHIFT; |
c9df406f LB |
803 | desc->l4i_chk = 0; |
804 | } | |
805 | ||
806 | /* ensure all other descriptors are written before first cmd_sts */ | |
807 | wmb(); | |
808 | desc->cmd_sts = cmd_sts; | |
809 | ||
8fa89bf5 LB |
810 | /* clear TX_END interrupt status */ |
811 | wrl(mp, INT_CAUSE(mp->port_num), ~(INT_TX_END_0 << txq->index)); | |
812 | rdl(mp, INT_CAUSE(mp->port_num)); | |
813 | ||
c9df406f LB |
814 | /* ensure all descriptors are written before poking hardware */ |
815 | wmb(); | |
13d64285 | 816 | txq_enable(txq); |
c9df406f | 817 | |
13d64285 | 818 | txq->tx_desc_count += nr_frags + 1; |
1da177e4 | 819 | } |
1da177e4 | 820 | |
fc32b0e2 | 821 | static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 | 822 | { |
e5371493 | 823 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 824 | struct net_device_stats *stats = &dev->stats; |
e5ef1de1 | 825 | int queue; |
13d64285 | 826 | struct tx_queue *txq; |
e5ef1de1 | 827 | struct netdev_queue *nq; |
c9df406f | 828 | unsigned long flags; |
e5ef1de1 | 829 | int entries_left; |
afdb57a2 | 830 | |
c9df406f LB |
831 | if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { |
832 | stats->tx_dropped++; | |
fc32b0e2 LB |
833 | dev_printk(KERN_DEBUG, &dev->dev, |
834 | "failed to linearize skb with tiny " | |
835 | "unaligned fragment\n"); | |
c9df406f LB |
836 | return NETDEV_TX_BUSY; |
837 | } | |
838 | ||
e5ef1de1 LB |
839 | queue = skb_get_queue_mapping(skb); |
840 | txq = mp->txq + queue; | |
841 | nq = netdev_get_tx_queue(dev, queue); | |
c9df406f | 842 | |
e5ef1de1 | 843 | spin_lock_irqsave(&mp->lock, flags); |
13d64285 | 844 | |
17cd0a59 | 845 | if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) { |
c9df406f | 846 | spin_unlock_irqrestore(&mp->lock, flags); |
e5ef1de1 LB |
847 | if (net_ratelimit()) |
848 | dev_printk(KERN_ERR, &dev->dev, "tx queue full?!\n"); | |
3d6b35bc LB |
849 | kfree_skb(skb); |
850 | return NETDEV_TX_OK; | |
c9df406f LB |
851 | } |
852 | ||
13d64285 | 853 | txq_submit_skb(txq, skb); |
c9df406f LB |
854 | stats->tx_bytes += skb->len; |
855 | stats->tx_packets++; | |
856 | dev->trans_start = jiffies; | |
857 | ||
e5ef1de1 LB |
858 | entries_left = txq->tx_ring_size - txq->tx_desc_count; |
859 | if (entries_left < MAX_SKB_FRAGS + 1) | |
860 | netif_tx_stop_queue(nq); | |
c9df406f LB |
861 | |
862 | spin_unlock_irqrestore(&mp->lock, flags); | |
863 | ||
864 | return NETDEV_TX_OK; | |
1da177e4 LT |
865 | } |
866 | ||
c9df406f | 867 | |
89df5fdc LB |
868 | /* tx rate control **********************************************************/ |
869 | /* | |
870 | * Set total maximum TX rate (shared by all TX queues for this port) | |
871 | * to 'rate' bits per second, with a maximum burst of 'burst' bytes. | |
872 | */ | |
873 | static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst) | |
874 | { | |
875 | int token_rate; | |
876 | int mtu; | |
877 | int bucket_size; | |
878 | ||
879 | token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); | |
880 | if (token_rate > 1023) | |
881 | token_rate = 1023; | |
882 | ||
883 | mtu = (mp->dev->mtu + 255) >> 8; | |
884 | if (mtu > 63) | |
885 | mtu = 63; | |
886 | ||
887 | bucket_size = (burst + 255) >> 8; | |
888 | if (bucket_size > 65535) | |
889 | bucket_size = 65535; | |
890 | ||
1e881592 LB |
891 | if (mp->shared->tx_bw_control_moved) { |
892 | wrl(mp, TX_BW_RATE_MOVED(mp->port_num), token_rate); | |
893 | wrl(mp, TX_BW_MTU_MOVED(mp->port_num), mtu); | |
894 | wrl(mp, TX_BW_BURST_MOVED(mp->port_num), bucket_size); | |
895 | } else { | |
896 | wrl(mp, TX_BW_RATE(mp->port_num), token_rate); | |
897 | wrl(mp, TX_BW_MTU(mp->port_num), mtu); | |
898 | wrl(mp, TX_BW_BURST(mp->port_num), bucket_size); | |
899 | } | |
89df5fdc LB |
900 | } |
901 | ||
902 | static void txq_set_rate(struct tx_queue *txq, int rate, int burst) | |
903 | { | |
904 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
905 | int token_rate; | |
906 | int bucket_size; | |
907 | ||
908 | token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); | |
909 | if (token_rate > 1023) | |
910 | token_rate = 1023; | |
911 | ||
912 | bucket_size = (burst + 255) >> 8; | |
913 | if (bucket_size > 65535) | |
914 | bucket_size = 65535; | |
915 | ||
3d6b35bc LB |
916 | wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14); |
917 | wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index), | |
89df5fdc LB |
918 | (bucket_size << 10) | token_rate); |
919 | } | |
920 | ||
921 | static void txq_set_fixed_prio_mode(struct tx_queue *txq) | |
922 | { | |
923 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
924 | int off; | |
925 | u32 val; | |
926 | ||
927 | /* | |
928 | * Turn on fixed priority mode. | |
929 | */ | |
1e881592 LB |
930 | if (mp->shared->tx_bw_control_moved) |
931 | off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num); | |
932 | else | |
933 | off = TXQ_FIX_PRIO_CONF(mp->port_num); | |
89df5fdc LB |
934 | |
935 | val = rdl(mp, off); | |
3d6b35bc | 936 | val |= 1 << txq->index; |
89df5fdc LB |
937 | wrl(mp, off, val); |
938 | } | |
939 | ||
940 | static void txq_set_wrr(struct tx_queue *txq, int weight) | |
941 | { | |
942 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
943 | int off; | |
944 | u32 val; | |
945 | ||
946 | /* | |
947 | * Turn off fixed priority mode. | |
948 | */ | |
1e881592 LB |
949 | if (mp->shared->tx_bw_control_moved) |
950 | off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num); | |
951 | else | |
952 | off = TXQ_FIX_PRIO_CONF(mp->port_num); | |
89df5fdc LB |
953 | |
954 | val = rdl(mp, off); | |
3d6b35bc | 955 | val &= ~(1 << txq->index); |
89df5fdc LB |
956 | wrl(mp, off, val); |
957 | ||
958 | /* | |
959 | * Configure WRR weight for this queue. | |
960 | */ | |
3d6b35bc | 961 | off = TXQ_BW_WRR_CONF(mp->port_num, txq->index); |
89df5fdc LB |
962 | |
963 | val = rdl(mp, off); | |
964 | val = (val & ~0xff) | (weight & 0xff); | |
965 | wrl(mp, off, val); | |
966 | } | |
967 | ||
968 | ||
c9df406f | 969 | /* mii management interface *************************************************/ |
45c5d3bc LB |
970 | static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id) |
971 | { | |
972 | struct mv643xx_eth_shared_private *msp = dev_id; | |
973 | ||
974 | if (readl(msp->base + ERR_INT_CAUSE) & ERR_INT_SMI_DONE) { | |
975 | writel(~ERR_INT_SMI_DONE, msp->base + ERR_INT_CAUSE); | |
976 | wake_up(&msp->smi_busy_wait); | |
977 | return IRQ_HANDLED; | |
978 | } | |
979 | ||
980 | return IRQ_NONE; | |
981 | } | |
c9df406f | 982 | |
45c5d3bc | 983 | static int smi_is_done(struct mv643xx_eth_shared_private *msp) |
1da177e4 | 984 | { |
45c5d3bc LB |
985 | return !(readl(msp->base + SMI_REG) & SMI_BUSY); |
986 | } | |
1da177e4 | 987 | |
45c5d3bc LB |
988 | static int smi_wait_ready(struct mv643xx_eth_shared_private *msp) |
989 | { | |
990 | if (msp->err_interrupt == NO_IRQ) { | |
991 | int i; | |
c9df406f | 992 | |
45c5d3bc LB |
993 | for (i = 0; !smi_is_done(msp); i++) { |
994 | if (i == 10) | |
995 | return -ETIMEDOUT; | |
996 | msleep(10); | |
c9df406f | 997 | } |
45c5d3bc LB |
998 | |
999 | return 0; | |
1000 | } | |
1001 | ||
1002 | if (!wait_event_timeout(msp->smi_busy_wait, smi_is_done(msp), | |
1003 | msecs_to_jiffies(100))) | |
1004 | return -ETIMEDOUT; | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | static int smi_reg_read(struct mv643xx_eth_private *mp, | |
1010 | unsigned int addr, unsigned int reg) | |
1011 | { | |
fc0eb9f2 | 1012 | struct mv643xx_eth_shared_private *msp = mp->shared->smi; |
45c5d3bc LB |
1013 | void __iomem *smi_reg = msp->base + SMI_REG; |
1014 | int ret; | |
1015 | ||
1016 | mutex_lock(&msp->phy_lock); | |
1017 | ||
1018 | if (smi_wait_ready(msp)) { | |
1019 | printk("%s: SMI bus busy timeout\n", mp->dev->name); | |
1020 | ret = -ETIMEDOUT; | |
1021 | goto out; | |
1da177e4 LT |
1022 | } |
1023 | ||
fc32b0e2 | 1024 | writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg); |
1da177e4 | 1025 | |
45c5d3bc LB |
1026 | if (smi_wait_ready(msp)) { |
1027 | printk("%s: SMI bus busy timeout\n", mp->dev->name); | |
1028 | ret = -ETIMEDOUT; | |
1029 | goto out; | |
1030 | } | |
1031 | ||
1032 | ret = readl(smi_reg); | |
1033 | if (!(ret & SMI_READ_VALID)) { | |
1034 | printk("%s: SMI bus read not valid\n", mp->dev->name); | |
1035 | ret = -ENODEV; | |
1036 | goto out; | |
c9df406f LB |
1037 | } |
1038 | ||
45c5d3bc LB |
1039 | ret &= 0xffff; |
1040 | ||
c9df406f | 1041 | out: |
45c5d3bc LB |
1042 | mutex_unlock(&msp->phy_lock); |
1043 | ||
1044 | return ret; | |
1da177e4 LT |
1045 | } |
1046 | ||
45c5d3bc LB |
1047 | static int smi_reg_write(struct mv643xx_eth_private *mp, unsigned int addr, |
1048 | unsigned int reg, unsigned int value) | |
1da177e4 | 1049 | { |
fc0eb9f2 | 1050 | struct mv643xx_eth_shared_private *msp = mp->shared->smi; |
45c5d3bc | 1051 | void __iomem *smi_reg = msp->base + SMI_REG; |
1da177e4 | 1052 | |
45c5d3bc | 1053 | mutex_lock(&msp->phy_lock); |
c9df406f | 1054 | |
45c5d3bc LB |
1055 | if (smi_wait_ready(msp)) { |
1056 | printk("%s: SMI bus busy timeout\n", mp->dev->name); | |
1057 | mutex_unlock(&msp->phy_lock); | |
1058 | return -ETIMEDOUT; | |
1da177e4 LT |
1059 | } |
1060 | ||
fc32b0e2 LB |
1061 | writel(SMI_OPCODE_WRITE | (reg << 21) | |
1062 | (addr << 16) | (value & 0xffff), smi_reg); | |
45c5d3bc LB |
1063 | |
1064 | mutex_unlock(&msp->phy_lock); | |
1065 | ||
1066 | return 0; | |
c9df406f | 1067 | } |
1da177e4 | 1068 | |
c9df406f LB |
1069 | |
1070 | /* mib counters *************************************************************/ | |
fc32b0e2 | 1071 | static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset) |
c9df406f | 1072 | { |
fc32b0e2 | 1073 | return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); |
1da177e4 LT |
1074 | } |
1075 | ||
fc32b0e2 | 1076 | static void mib_counters_clear(struct mv643xx_eth_private *mp) |
d0412d96 | 1077 | { |
fc32b0e2 LB |
1078 | int i; |
1079 | ||
1080 | for (i = 0; i < 0x80; i += 4) | |
1081 | mib_read(mp, i); | |
c9df406f | 1082 | } |
d0412d96 | 1083 | |
fc32b0e2 | 1084 | static void mib_counters_update(struct mv643xx_eth_private *mp) |
c9df406f | 1085 | { |
e5371493 | 1086 | struct mib_counters *p = &mp->mib_counters; |
4b8e3655 | 1087 | |
fc32b0e2 LB |
1088 | p->good_octets_received += mib_read(mp, 0x00); |
1089 | p->good_octets_received += (u64)mib_read(mp, 0x04) << 32; | |
1090 | p->bad_octets_received += mib_read(mp, 0x08); | |
1091 | p->internal_mac_transmit_err += mib_read(mp, 0x0c); | |
1092 | p->good_frames_received += mib_read(mp, 0x10); | |
1093 | p->bad_frames_received += mib_read(mp, 0x14); | |
1094 | p->broadcast_frames_received += mib_read(mp, 0x18); | |
1095 | p->multicast_frames_received += mib_read(mp, 0x1c); | |
1096 | p->frames_64_octets += mib_read(mp, 0x20); | |
1097 | p->frames_65_to_127_octets += mib_read(mp, 0x24); | |
1098 | p->frames_128_to_255_octets += mib_read(mp, 0x28); | |
1099 | p->frames_256_to_511_octets += mib_read(mp, 0x2c); | |
1100 | p->frames_512_to_1023_octets += mib_read(mp, 0x30); | |
1101 | p->frames_1024_to_max_octets += mib_read(mp, 0x34); | |
1102 | p->good_octets_sent += mib_read(mp, 0x38); | |
1103 | p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32; | |
1104 | p->good_frames_sent += mib_read(mp, 0x40); | |
1105 | p->excessive_collision += mib_read(mp, 0x44); | |
1106 | p->multicast_frames_sent += mib_read(mp, 0x48); | |
1107 | p->broadcast_frames_sent += mib_read(mp, 0x4c); | |
1108 | p->unrec_mac_control_received += mib_read(mp, 0x50); | |
1109 | p->fc_sent += mib_read(mp, 0x54); | |
1110 | p->good_fc_received += mib_read(mp, 0x58); | |
1111 | p->bad_fc_received += mib_read(mp, 0x5c); | |
1112 | p->undersize_received += mib_read(mp, 0x60); | |
1113 | p->fragments_received += mib_read(mp, 0x64); | |
1114 | p->oversize_received += mib_read(mp, 0x68); | |
1115 | p->jabber_received += mib_read(mp, 0x6c); | |
1116 | p->mac_receive_error += mib_read(mp, 0x70); | |
1117 | p->bad_crc_event += mib_read(mp, 0x74); | |
1118 | p->collision += mib_read(mp, 0x78); | |
1119 | p->late_collision += mib_read(mp, 0x7c); | |
d0412d96 JC |
1120 | } |
1121 | ||
c9df406f LB |
1122 | |
1123 | /* ethtool ******************************************************************/ | |
e5371493 | 1124 | struct mv643xx_eth_stats { |
c9df406f LB |
1125 | char stat_string[ETH_GSTRING_LEN]; |
1126 | int sizeof_stat; | |
16820054 LB |
1127 | int netdev_off; |
1128 | int mp_off; | |
c9df406f LB |
1129 | }; |
1130 | ||
16820054 LB |
1131 | #define SSTAT(m) \ |
1132 | { #m, FIELD_SIZEOF(struct net_device_stats, m), \ | |
1133 | offsetof(struct net_device, stats.m), -1 } | |
1134 | ||
1135 | #define MIBSTAT(m) \ | |
1136 | { #m, FIELD_SIZEOF(struct mib_counters, m), \ | |
1137 | -1, offsetof(struct mv643xx_eth_private, mib_counters.m) } | |
1138 | ||
1139 | static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { | |
1140 | SSTAT(rx_packets), | |
1141 | SSTAT(tx_packets), | |
1142 | SSTAT(rx_bytes), | |
1143 | SSTAT(tx_bytes), | |
1144 | SSTAT(rx_errors), | |
1145 | SSTAT(tx_errors), | |
1146 | SSTAT(rx_dropped), | |
1147 | SSTAT(tx_dropped), | |
1148 | MIBSTAT(good_octets_received), | |
1149 | MIBSTAT(bad_octets_received), | |
1150 | MIBSTAT(internal_mac_transmit_err), | |
1151 | MIBSTAT(good_frames_received), | |
1152 | MIBSTAT(bad_frames_received), | |
1153 | MIBSTAT(broadcast_frames_received), | |
1154 | MIBSTAT(multicast_frames_received), | |
1155 | MIBSTAT(frames_64_octets), | |
1156 | MIBSTAT(frames_65_to_127_octets), | |
1157 | MIBSTAT(frames_128_to_255_octets), | |
1158 | MIBSTAT(frames_256_to_511_octets), | |
1159 | MIBSTAT(frames_512_to_1023_octets), | |
1160 | MIBSTAT(frames_1024_to_max_octets), | |
1161 | MIBSTAT(good_octets_sent), | |
1162 | MIBSTAT(good_frames_sent), | |
1163 | MIBSTAT(excessive_collision), | |
1164 | MIBSTAT(multicast_frames_sent), | |
1165 | MIBSTAT(broadcast_frames_sent), | |
1166 | MIBSTAT(unrec_mac_control_received), | |
1167 | MIBSTAT(fc_sent), | |
1168 | MIBSTAT(good_fc_received), | |
1169 | MIBSTAT(bad_fc_received), | |
1170 | MIBSTAT(undersize_received), | |
1171 | MIBSTAT(fragments_received), | |
1172 | MIBSTAT(oversize_received), | |
1173 | MIBSTAT(jabber_received), | |
1174 | MIBSTAT(mac_receive_error), | |
1175 | MIBSTAT(bad_crc_event), | |
1176 | MIBSTAT(collision), | |
1177 | MIBSTAT(late_collision), | |
c9df406f LB |
1178 | }; |
1179 | ||
e5371493 | 1180 | static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
d0412d96 | 1181 | { |
e5371493 | 1182 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
d0412d96 JC |
1183 | int err; |
1184 | ||
d0412d96 | 1185 | err = mii_ethtool_gset(&mp->mii, cmd); |
d0412d96 | 1186 | |
fc32b0e2 LB |
1187 | /* |
1188 | * The MAC does not support 1000baseT_Half. | |
1189 | */ | |
d0412d96 JC |
1190 | cmd->supported &= ~SUPPORTED_1000baseT_Half; |
1191 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; | |
1192 | ||
1193 | return err; | |
1194 | } | |
1195 | ||
bedfe324 LB |
1196 | static int mv643xx_eth_get_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd) |
1197 | { | |
81600eea LB |
1198 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1199 | u32 port_status; | |
1200 | ||
1201 | port_status = rdl(mp, PORT_STATUS(mp->port_num)); | |
1202 | ||
bedfe324 LB |
1203 | cmd->supported = SUPPORTED_MII; |
1204 | cmd->advertising = ADVERTISED_MII; | |
81600eea LB |
1205 | switch (port_status & PORT_SPEED_MASK) { |
1206 | case PORT_SPEED_10: | |
1207 | cmd->speed = SPEED_10; | |
1208 | break; | |
1209 | case PORT_SPEED_100: | |
1210 | cmd->speed = SPEED_100; | |
1211 | break; | |
1212 | case PORT_SPEED_1000: | |
1213 | cmd->speed = SPEED_1000; | |
1214 | break; | |
1215 | default: | |
1216 | cmd->speed = -1; | |
1217 | break; | |
1218 | } | |
1219 | cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF; | |
bedfe324 LB |
1220 | cmd->port = PORT_MII; |
1221 | cmd->phy_address = 0; | |
1222 | cmd->transceiver = XCVR_INTERNAL; | |
1223 | cmd->autoneg = AUTONEG_DISABLE; | |
1224 | cmd->maxtxpkt = 1; | |
1225 | cmd->maxrxpkt = 1; | |
1226 | ||
1227 | return 0; | |
1228 | } | |
1229 | ||
e5371493 | 1230 | static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
1da177e4 | 1231 | { |
e5371493 | 1232 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
ab4384a6 | 1233 | |
fc32b0e2 LB |
1234 | /* |
1235 | * The MAC does not support 1000baseT_Half. | |
1236 | */ | |
1237 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; | |
1238 | ||
2b3ba0e3 | 1239 | return mii_ethtool_sset(&mp->mii, cmd); |
c9df406f | 1240 | } |
1da177e4 | 1241 | |
bedfe324 LB |
1242 | static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd) |
1243 | { | |
1244 | return -EINVAL; | |
1245 | } | |
1246 | ||
fc32b0e2 LB |
1247 | static void mv643xx_eth_get_drvinfo(struct net_device *dev, |
1248 | struct ethtool_drvinfo *drvinfo) | |
c9df406f | 1249 | { |
e5371493 LB |
1250 | strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32); |
1251 | strncpy(drvinfo->version, mv643xx_eth_driver_version, 32); | |
c9df406f | 1252 | strncpy(drvinfo->fw_version, "N/A", 32); |
fc32b0e2 | 1253 | strncpy(drvinfo->bus_info, "platform", 32); |
16820054 | 1254 | drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats); |
c9df406f | 1255 | } |
1da177e4 | 1256 | |
fc32b0e2 | 1257 | static int mv643xx_eth_nway_reset(struct net_device *dev) |
c9df406f | 1258 | { |
e5371493 | 1259 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1260 | |
c9df406f LB |
1261 | return mii_nway_restart(&mp->mii); |
1262 | } | |
1da177e4 | 1263 | |
bedfe324 LB |
1264 | static int mv643xx_eth_nway_reset_phyless(struct net_device *dev) |
1265 | { | |
1266 | return -EINVAL; | |
1267 | } | |
1268 | ||
c9df406f LB |
1269 | static u32 mv643xx_eth_get_link(struct net_device *dev) |
1270 | { | |
e5371493 | 1271 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1272 | |
c9df406f LB |
1273 | return mii_link_ok(&mp->mii); |
1274 | } | |
1da177e4 | 1275 | |
bedfe324 LB |
1276 | static u32 mv643xx_eth_get_link_phyless(struct net_device *dev) |
1277 | { | |
1278 | return 1; | |
1279 | } | |
1280 | ||
fc32b0e2 LB |
1281 | static void mv643xx_eth_get_strings(struct net_device *dev, |
1282 | uint32_t stringset, uint8_t *data) | |
c9df406f LB |
1283 | { |
1284 | int i; | |
1da177e4 | 1285 | |
fc32b0e2 LB |
1286 | if (stringset == ETH_SS_STATS) { |
1287 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { | |
c9df406f | 1288 | memcpy(data + i * ETH_GSTRING_LEN, |
16820054 | 1289 | mv643xx_eth_stats[i].stat_string, |
e5371493 | 1290 | ETH_GSTRING_LEN); |
c9df406f | 1291 | } |
c9df406f LB |
1292 | } |
1293 | } | |
1da177e4 | 1294 | |
fc32b0e2 LB |
1295 | static void mv643xx_eth_get_ethtool_stats(struct net_device *dev, |
1296 | struct ethtool_stats *stats, | |
1297 | uint64_t *data) | |
c9df406f | 1298 | { |
b9873841 | 1299 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 1300 | int i; |
1da177e4 | 1301 | |
fc32b0e2 | 1302 | mib_counters_update(mp); |
1da177e4 | 1303 | |
16820054 LB |
1304 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { |
1305 | const struct mv643xx_eth_stats *stat; | |
1306 | void *p; | |
1307 | ||
1308 | stat = mv643xx_eth_stats + i; | |
1309 | ||
1310 | if (stat->netdev_off >= 0) | |
1311 | p = ((void *)mp->dev) + stat->netdev_off; | |
1312 | else | |
1313 | p = ((void *)mp) + stat->mp_off; | |
1314 | ||
1315 | data[i] = (stat->sizeof_stat == 8) ? | |
1316 | *(uint64_t *)p : *(uint32_t *)p; | |
1da177e4 | 1317 | } |
c9df406f | 1318 | } |
1da177e4 | 1319 | |
fc32b0e2 | 1320 | static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset) |
c9df406f | 1321 | { |
fc32b0e2 | 1322 | if (sset == ETH_SS_STATS) |
16820054 | 1323 | return ARRAY_SIZE(mv643xx_eth_stats); |
fc32b0e2 LB |
1324 | |
1325 | return -EOPNOTSUPP; | |
c9df406f | 1326 | } |
1da177e4 | 1327 | |
e5371493 | 1328 | static const struct ethtool_ops mv643xx_eth_ethtool_ops = { |
fc32b0e2 LB |
1329 | .get_settings = mv643xx_eth_get_settings, |
1330 | .set_settings = mv643xx_eth_set_settings, | |
1331 | .get_drvinfo = mv643xx_eth_get_drvinfo, | |
1332 | .nway_reset = mv643xx_eth_nway_reset, | |
1333 | .get_link = mv643xx_eth_get_link, | |
c9df406f | 1334 | .set_sg = ethtool_op_set_sg, |
fc32b0e2 LB |
1335 | .get_strings = mv643xx_eth_get_strings, |
1336 | .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, | |
e5371493 | 1337 | .get_sset_count = mv643xx_eth_get_sset_count, |
c9df406f | 1338 | }; |
1da177e4 | 1339 | |
bedfe324 LB |
1340 | static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = { |
1341 | .get_settings = mv643xx_eth_get_settings_phyless, | |
1342 | .set_settings = mv643xx_eth_set_settings_phyless, | |
1343 | .get_drvinfo = mv643xx_eth_get_drvinfo, | |
1344 | .nway_reset = mv643xx_eth_nway_reset_phyless, | |
1345 | .get_link = mv643xx_eth_get_link_phyless, | |
1346 | .set_sg = ethtool_op_set_sg, | |
1347 | .get_strings = mv643xx_eth_get_strings, | |
1348 | .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, | |
1349 | .get_sset_count = mv643xx_eth_get_sset_count, | |
1350 | }; | |
1351 | ||
bea3348e | 1352 | |
c9df406f | 1353 | /* address handling *********************************************************/ |
5daffe94 | 1354 | static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr) |
c9df406f | 1355 | { |
c9df406f LB |
1356 | unsigned int mac_h; |
1357 | unsigned int mac_l; | |
1da177e4 | 1358 | |
fc32b0e2 LB |
1359 | mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num)); |
1360 | mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num)); | |
1da177e4 | 1361 | |
5daffe94 LB |
1362 | addr[0] = (mac_h >> 24) & 0xff; |
1363 | addr[1] = (mac_h >> 16) & 0xff; | |
1364 | addr[2] = (mac_h >> 8) & 0xff; | |
1365 | addr[3] = mac_h & 0xff; | |
1366 | addr[4] = (mac_l >> 8) & 0xff; | |
1367 | addr[5] = mac_l & 0xff; | |
c9df406f | 1368 | } |
1da177e4 | 1369 | |
e5371493 | 1370 | static void init_mac_tables(struct mv643xx_eth_private *mp) |
c9df406f | 1371 | { |
fc32b0e2 | 1372 | int i; |
1da177e4 | 1373 | |
fc32b0e2 LB |
1374 | for (i = 0; i < 0x100; i += 4) { |
1375 | wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); | |
1376 | wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); | |
c9df406f | 1377 | } |
fc32b0e2 LB |
1378 | |
1379 | for (i = 0; i < 0x10; i += 4) | |
1380 | wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0); | |
c9df406f | 1381 | } |
d0412d96 | 1382 | |
e5371493 | 1383 | static void set_filter_table_entry(struct mv643xx_eth_private *mp, |
fc32b0e2 | 1384 | int table, unsigned char entry) |
c9df406f LB |
1385 | { |
1386 | unsigned int table_reg; | |
ab4384a6 | 1387 | |
c9df406f | 1388 | /* Set "accepts frame bit" at specified table entry */ |
fc32b0e2 LB |
1389 | table_reg = rdl(mp, table + (entry & 0xfc)); |
1390 | table_reg |= 0x01 << (8 * (entry & 3)); | |
1391 | wrl(mp, table + (entry & 0xfc), table_reg); | |
1da177e4 LT |
1392 | } |
1393 | ||
5daffe94 | 1394 | static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr) |
1da177e4 | 1395 | { |
c9df406f LB |
1396 | unsigned int mac_h; |
1397 | unsigned int mac_l; | |
1398 | int table; | |
1da177e4 | 1399 | |
fc32b0e2 LB |
1400 | mac_l = (addr[4] << 8) | addr[5]; |
1401 | mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; | |
ff561eef | 1402 | |
fc32b0e2 LB |
1403 | wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l); |
1404 | wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h); | |
1da177e4 | 1405 | |
fc32b0e2 | 1406 | table = UNICAST_TABLE(mp->port_num); |
5daffe94 | 1407 | set_filter_table_entry(mp, table, addr[5] & 0x0f); |
1da177e4 LT |
1408 | } |
1409 | ||
fc32b0e2 | 1410 | static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) |
1da177e4 | 1411 | { |
e5371493 | 1412 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1413 | |
fc32b0e2 LB |
1414 | /* +2 is for the offset of the HW addr type */ |
1415 | memcpy(dev->dev_addr, addr + 2, 6); | |
1416 | ||
cc9754b3 LB |
1417 | init_mac_tables(mp); |
1418 | uc_addr_set(mp, dev->dev_addr); | |
1da177e4 LT |
1419 | |
1420 | return 0; | |
1421 | } | |
1422 | ||
69876569 LB |
1423 | static int addr_crc(unsigned char *addr) |
1424 | { | |
1425 | int crc = 0; | |
1426 | int i; | |
1427 | ||
1428 | for (i = 0; i < 6; i++) { | |
1429 | int j; | |
1430 | ||
1431 | crc = (crc ^ addr[i]) << 8; | |
1432 | for (j = 7; j >= 0; j--) { | |
1433 | if (crc & (0x100 << j)) | |
1434 | crc ^= 0x107 << j; | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | return crc; | |
1439 | } | |
1440 | ||
fc32b0e2 | 1441 | static void mv643xx_eth_set_rx_mode(struct net_device *dev) |
1da177e4 | 1442 | { |
fc32b0e2 LB |
1443 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1444 | u32 port_config; | |
1445 | struct dev_addr_list *addr; | |
1446 | int i; | |
c8aaea25 | 1447 | |
fc32b0e2 LB |
1448 | port_config = rdl(mp, PORT_CONFIG(mp->port_num)); |
1449 | if (dev->flags & IFF_PROMISC) | |
1450 | port_config |= UNICAST_PROMISCUOUS_MODE; | |
1451 | else | |
1452 | port_config &= ~UNICAST_PROMISCUOUS_MODE; | |
1453 | wrl(mp, PORT_CONFIG(mp->port_num), port_config); | |
1da177e4 | 1454 | |
fc32b0e2 LB |
1455 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
1456 | int port_num = mp->port_num; | |
1457 | u32 accept = 0x01010101; | |
c8aaea25 | 1458 | |
fc32b0e2 LB |
1459 | for (i = 0; i < 0x100; i += 4) { |
1460 | wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept); | |
1461 | wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept); | |
c9df406f LB |
1462 | } |
1463 | return; | |
1464 | } | |
c8aaea25 | 1465 | |
fc32b0e2 LB |
1466 | for (i = 0; i < 0x100; i += 4) { |
1467 | wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); | |
1468 | wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); | |
1da177e4 LT |
1469 | } |
1470 | ||
fc32b0e2 LB |
1471 | for (addr = dev->mc_list; addr != NULL; addr = addr->next) { |
1472 | u8 *a = addr->da_addr; | |
1473 | int table; | |
324ff2c1 | 1474 | |
fc32b0e2 LB |
1475 | if (addr->da_addrlen != 6) |
1476 | continue; | |
1da177e4 | 1477 | |
fc32b0e2 LB |
1478 | if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) { |
1479 | table = SPECIAL_MCAST_TABLE(mp->port_num); | |
1480 | set_filter_table_entry(mp, table, a[5]); | |
1481 | } else { | |
1482 | int crc = addr_crc(a); | |
1da177e4 | 1483 | |
fc32b0e2 LB |
1484 | table = OTHER_MCAST_TABLE(mp->port_num); |
1485 | set_filter_table_entry(mp, table, crc); | |
1486 | } | |
1487 | } | |
c9df406f | 1488 | } |
c8aaea25 | 1489 | |
c8aaea25 | 1490 | |
c9df406f | 1491 | /* rx/tx queue initialisation ***********************************************/ |
64da80a2 | 1492 | static int rxq_init(struct mv643xx_eth_private *mp, int index) |
c9df406f | 1493 | { |
64da80a2 | 1494 | struct rx_queue *rxq = mp->rxq + index; |
8a578111 LB |
1495 | struct rx_desc *rx_desc; |
1496 | int size; | |
c9df406f LB |
1497 | int i; |
1498 | ||
64da80a2 LB |
1499 | rxq->index = index; |
1500 | ||
8a578111 LB |
1501 | rxq->rx_ring_size = mp->default_rx_ring_size; |
1502 | ||
1503 | rxq->rx_desc_count = 0; | |
1504 | rxq->rx_curr_desc = 0; | |
1505 | rxq->rx_used_desc = 0; | |
1506 | ||
1507 | size = rxq->rx_ring_size * sizeof(struct rx_desc); | |
1508 | ||
f7981c1c | 1509 | if (index == 0 && size <= mp->rx_desc_sram_size) { |
8a578111 LB |
1510 | rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr, |
1511 | mp->rx_desc_sram_size); | |
1512 | rxq->rx_desc_dma = mp->rx_desc_sram_addr; | |
1513 | } else { | |
1514 | rxq->rx_desc_area = dma_alloc_coherent(NULL, size, | |
1515 | &rxq->rx_desc_dma, | |
1516 | GFP_KERNEL); | |
f7ea3337 PJ |
1517 | } |
1518 | ||
8a578111 LB |
1519 | if (rxq->rx_desc_area == NULL) { |
1520 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1521 | "can't allocate rx ring (%d bytes)\n", size); | |
1522 | goto out; | |
1523 | } | |
1524 | memset(rxq->rx_desc_area, 0, size); | |
1da177e4 | 1525 | |
8a578111 LB |
1526 | rxq->rx_desc_area_size = size; |
1527 | rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb), | |
1528 | GFP_KERNEL); | |
1529 | if (rxq->rx_skb == NULL) { | |
1530 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1531 | "can't allocate rx skb ring\n"); | |
1532 | goto out_free; | |
1533 | } | |
1534 | ||
1535 | rx_desc = (struct rx_desc *)rxq->rx_desc_area; | |
1536 | for (i = 0; i < rxq->rx_ring_size; i++) { | |
9da78745 LB |
1537 | int nexti; |
1538 | ||
1539 | nexti = i + 1; | |
1540 | if (nexti == rxq->rx_ring_size) | |
1541 | nexti = 0; | |
1542 | ||
8a578111 LB |
1543 | rx_desc[i].next_desc_ptr = rxq->rx_desc_dma + |
1544 | nexti * sizeof(struct rx_desc); | |
1545 | } | |
1546 | ||
8a578111 LB |
1547 | return 0; |
1548 | ||
1549 | ||
1550 | out_free: | |
f7981c1c | 1551 | if (index == 0 && size <= mp->rx_desc_sram_size) |
8a578111 LB |
1552 | iounmap(rxq->rx_desc_area); |
1553 | else | |
1554 | dma_free_coherent(NULL, size, | |
1555 | rxq->rx_desc_area, | |
1556 | rxq->rx_desc_dma); | |
1557 | ||
1558 | out: | |
1559 | return -ENOMEM; | |
c9df406f | 1560 | } |
c8aaea25 | 1561 | |
8a578111 | 1562 | static void rxq_deinit(struct rx_queue *rxq) |
c9df406f | 1563 | { |
8a578111 LB |
1564 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
1565 | int i; | |
1566 | ||
1567 | rxq_disable(rxq); | |
c8aaea25 | 1568 | |
8a578111 LB |
1569 | for (i = 0; i < rxq->rx_ring_size; i++) { |
1570 | if (rxq->rx_skb[i]) { | |
1571 | dev_kfree_skb(rxq->rx_skb[i]); | |
1572 | rxq->rx_desc_count--; | |
1da177e4 | 1573 | } |
c8aaea25 | 1574 | } |
1da177e4 | 1575 | |
8a578111 LB |
1576 | if (rxq->rx_desc_count) { |
1577 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1578 | "error freeing rx ring -- %d skbs stuck\n", | |
1579 | rxq->rx_desc_count); | |
1580 | } | |
1581 | ||
f7981c1c | 1582 | if (rxq->index == 0 && |
64da80a2 | 1583 | rxq->rx_desc_area_size <= mp->rx_desc_sram_size) |
8a578111 | 1584 | iounmap(rxq->rx_desc_area); |
c9df406f | 1585 | else |
8a578111 LB |
1586 | dma_free_coherent(NULL, rxq->rx_desc_area_size, |
1587 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
1588 | ||
1589 | kfree(rxq->rx_skb); | |
c9df406f | 1590 | } |
1da177e4 | 1591 | |
3d6b35bc | 1592 | static int txq_init(struct mv643xx_eth_private *mp, int index) |
c9df406f | 1593 | { |
3d6b35bc | 1594 | struct tx_queue *txq = mp->txq + index; |
13d64285 LB |
1595 | struct tx_desc *tx_desc; |
1596 | int size; | |
c9df406f | 1597 | int i; |
1da177e4 | 1598 | |
3d6b35bc LB |
1599 | txq->index = index; |
1600 | ||
13d64285 LB |
1601 | txq->tx_ring_size = mp->default_tx_ring_size; |
1602 | ||
1603 | txq->tx_desc_count = 0; | |
1604 | txq->tx_curr_desc = 0; | |
1605 | txq->tx_used_desc = 0; | |
1606 | ||
1607 | size = txq->tx_ring_size * sizeof(struct tx_desc); | |
1608 | ||
f7981c1c | 1609 | if (index == 0 && size <= mp->tx_desc_sram_size) { |
13d64285 LB |
1610 | txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr, |
1611 | mp->tx_desc_sram_size); | |
1612 | txq->tx_desc_dma = mp->tx_desc_sram_addr; | |
1613 | } else { | |
1614 | txq->tx_desc_area = dma_alloc_coherent(NULL, size, | |
1615 | &txq->tx_desc_dma, | |
1616 | GFP_KERNEL); | |
1617 | } | |
1618 | ||
1619 | if (txq->tx_desc_area == NULL) { | |
1620 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1621 | "can't allocate tx ring (%d bytes)\n", size); | |
1622 | goto out; | |
c9df406f | 1623 | } |
13d64285 LB |
1624 | memset(txq->tx_desc_area, 0, size); |
1625 | ||
1626 | txq->tx_desc_area_size = size; | |
1627 | txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb), | |
1628 | GFP_KERNEL); | |
1629 | if (txq->tx_skb == NULL) { | |
1630 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1631 | "can't allocate tx skb ring\n"); | |
1632 | goto out_free; | |
1633 | } | |
1634 | ||
1635 | tx_desc = (struct tx_desc *)txq->tx_desc_area; | |
1636 | for (i = 0; i < txq->tx_ring_size; i++) { | |
6b368f68 | 1637 | struct tx_desc *txd = tx_desc + i; |
9da78745 LB |
1638 | int nexti; |
1639 | ||
1640 | nexti = i + 1; | |
1641 | if (nexti == txq->tx_ring_size) | |
1642 | nexti = 0; | |
6b368f68 LB |
1643 | |
1644 | txd->cmd_sts = 0; | |
1645 | txd->next_desc_ptr = txq->tx_desc_dma + | |
13d64285 LB |
1646 | nexti * sizeof(struct tx_desc); |
1647 | } | |
1648 | ||
1649 | return 0; | |
1650 | ||
c9df406f | 1651 | |
13d64285 | 1652 | out_free: |
f7981c1c | 1653 | if (index == 0 && size <= mp->tx_desc_sram_size) |
13d64285 LB |
1654 | iounmap(txq->tx_desc_area); |
1655 | else | |
1656 | dma_free_coherent(NULL, size, | |
1657 | txq->tx_desc_area, | |
1658 | txq->tx_desc_dma); | |
c9df406f | 1659 | |
13d64285 LB |
1660 | out: |
1661 | return -ENOMEM; | |
c8aaea25 | 1662 | } |
1da177e4 | 1663 | |
13d64285 | 1664 | static void txq_reclaim(struct tx_queue *txq, int force) |
c8aaea25 | 1665 | { |
13d64285 | 1666 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
c8aaea25 | 1667 | unsigned long flags; |
1da177e4 | 1668 | |
13d64285 LB |
1669 | spin_lock_irqsave(&mp->lock, flags); |
1670 | while (txq->tx_desc_count > 0) { | |
1671 | int tx_index; | |
1672 | struct tx_desc *desc; | |
1673 | u32 cmd_sts; | |
1674 | struct sk_buff *skb; | |
1675 | dma_addr_t addr; | |
1676 | int count; | |
4d64e718 | 1677 | |
13d64285 LB |
1678 | tx_index = txq->tx_used_desc; |
1679 | desc = &txq->tx_desc_area[tx_index]; | |
c9df406f | 1680 | cmd_sts = desc->cmd_sts; |
4d64e718 | 1681 | |
6b368f68 LB |
1682 | if (cmd_sts & BUFFER_OWNED_BY_DMA) { |
1683 | if (!force) | |
1684 | break; | |
1685 | desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA; | |
1686 | } | |
1da177e4 | 1687 | |
9da78745 LB |
1688 | txq->tx_used_desc = tx_index + 1; |
1689 | if (txq->tx_used_desc == txq->tx_ring_size) | |
1690 | txq->tx_used_desc = 0; | |
13d64285 | 1691 | txq->tx_desc_count--; |
1da177e4 | 1692 | |
c9df406f LB |
1693 | addr = desc->buf_ptr; |
1694 | count = desc->byte_cnt; | |
13d64285 LB |
1695 | skb = txq->tx_skb[tx_index]; |
1696 | txq->tx_skb[tx_index] = NULL; | |
c8aaea25 | 1697 | |
cc9754b3 | 1698 | if (cmd_sts & ERROR_SUMMARY) { |
13d64285 LB |
1699 | dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n"); |
1700 | mp->dev->stats.tx_errors++; | |
c9df406f | 1701 | } |
1da177e4 | 1702 | |
13d64285 LB |
1703 | /* |
1704 | * Drop mp->lock while we free the skb. | |
1705 | */ | |
c9df406f | 1706 | spin_unlock_irqrestore(&mp->lock, flags); |
1da177e4 | 1707 | |
cc9754b3 | 1708 | if (cmd_sts & TX_FIRST_DESC) |
c9df406f LB |
1709 | dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE); |
1710 | else | |
1711 | dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE); | |
c2e5b352 | 1712 | |
c9df406f LB |
1713 | if (skb) |
1714 | dev_kfree_skb_irq(skb); | |
63c9e549 | 1715 | |
13d64285 | 1716 | spin_lock_irqsave(&mp->lock, flags); |
c9df406f | 1717 | } |
13d64285 | 1718 | spin_unlock_irqrestore(&mp->lock, flags); |
c9df406f | 1719 | } |
1da177e4 | 1720 | |
13d64285 | 1721 | static void txq_deinit(struct tx_queue *txq) |
c9df406f | 1722 | { |
13d64285 | 1723 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
fa3959f4 | 1724 | |
13d64285 LB |
1725 | txq_disable(txq); |
1726 | txq_reclaim(txq, 1); | |
1da177e4 | 1727 | |
13d64285 | 1728 | BUG_ON(txq->tx_used_desc != txq->tx_curr_desc); |
1da177e4 | 1729 | |
f7981c1c | 1730 | if (txq->index == 0 && |
3d6b35bc | 1731 | txq->tx_desc_area_size <= mp->tx_desc_sram_size) |
13d64285 | 1732 | iounmap(txq->tx_desc_area); |
c9df406f | 1733 | else |
13d64285 LB |
1734 | dma_free_coherent(NULL, txq->tx_desc_area_size, |
1735 | txq->tx_desc_area, txq->tx_desc_dma); | |
1736 | ||
1737 | kfree(txq->tx_skb); | |
c9df406f | 1738 | } |
1da177e4 | 1739 | |
1da177e4 | 1740 | |
c9df406f | 1741 | /* netdev ops and related ***************************************************/ |
2f7eb47a LB |
1742 | static void handle_link_event(struct mv643xx_eth_private *mp) |
1743 | { | |
1744 | struct net_device *dev = mp->dev; | |
1745 | u32 port_status; | |
1746 | int speed; | |
1747 | int duplex; | |
1748 | int fc; | |
1749 | ||
1750 | port_status = rdl(mp, PORT_STATUS(mp->port_num)); | |
1751 | if (!(port_status & LINK_UP)) { | |
1752 | if (netif_carrier_ok(dev)) { | |
1753 | int i; | |
1754 | ||
1755 | printk(KERN_INFO "%s: link down\n", dev->name); | |
1756 | ||
1757 | netif_carrier_off(dev); | |
2f7eb47a | 1758 | |
f7981c1c | 1759 | for (i = 0; i < mp->txq_count; i++) { |
2f7eb47a LB |
1760 | struct tx_queue *txq = mp->txq + i; |
1761 | ||
f7981c1c LB |
1762 | txq_reclaim(txq, 1); |
1763 | txq_reset_hw_ptr(txq); | |
2f7eb47a LB |
1764 | } |
1765 | } | |
1766 | return; | |
1767 | } | |
1768 | ||
1769 | switch (port_status & PORT_SPEED_MASK) { | |
1770 | case PORT_SPEED_10: | |
1771 | speed = 10; | |
1772 | break; | |
1773 | case PORT_SPEED_100: | |
1774 | speed = 100; | |
1775 | break; | |
1776 | case PORT_SPEED_1000: | |
1777 | speed = 1000; | |
1778 | break; | |
1779 | default: | |
1780 | speed = -1; | |
1781 | break; | |
1782 | } | |
1783 | duplex = (port_status & FULL_DUPLEX) ? 1 : 0; | |
1784 | fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0; | |
1785 | ||
1786 | printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, " | |
1787 | "flow control %sabled\n", dev->name, | |
1788 | speed, duplex ? "full" : "half", | |
1789 | fc ? "en" : "dis"); | |
1790 | ||
4fdeca3f | 1791 | if (!netif_carrier_ok(dev)) |
2f7eb47a | 1792 | netif_carrier_on(dev); |
2f7eb47a LB |
1793 | } |
1794 | ||
fc32b0e2 | 1795 | static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id) |
c9df406f LB |
1796 | { |
1797 | struct net_device *dev = (struct net_device *)dev_id; | |
e5371493 | 1798 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
fc32b0e2 LB |
1799 | u32 int_cause; |
1800 | u32 int_cause_ext; | |
ce4e2e45 | 1801 | |
226bb6b7 LB |
1802 | int_cause = rdl(mp, INT_CAUSE(mp->port_num)) & |
1803 | (INT_TX_END | INT_RX | INT_EXT); | |
fc32b0e2 LB |
1804 | if (int_cause == 0) |
1805 | return IRQ_NONE; | |
1806 | ||
1807 | int_cause_ext = 0; | |
cc9754b3 | 1808 | if (int_cause & INT_EXT) { |
13d64285 | 1809 | int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num)) |
befefe21 | 1810 | & (INT_EXT_LINK_PHY | INT_EXT_TX); |
13d64285 | 1811 | wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext); |
c9df406f | 1812 | } |
1da177e4 | 1813 | |
befefe21 | 1814 | if (int_cause_ext & INT_EXT_LINK_PHY) |
2f7eb47a | 1815 | handle_link_event(mp); |
1da177e4 | 1816 | |
64da80a2 LB |
1817 | /* |
1818 | * RxBuffer or RxError set for any of the 8 queues? | |
1819 | */ | |
cc9754b3 | 1820 | if (int_cause & INT_RX) { |
819ddcaf | 1821 | wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_RX)); |
13d64285 | 1822 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
13d64285 | 1823 | rdl(mp, INT_MASK(mp->port_num)); |
1da177e4 | 1824 | |
2257e05c | 1825 | napi_schedule(&mp->napi); |
84dd619e | 1826 | } |
fc32b0e2 | 1827 | |
3d6b35bc LB |
1828 | /* |
1829 | * TxBuffer or TxError set for any of the 8 queues? | |
1830 | */ | |
13d64285 | 1831 | if (int_cause_ext & INT_EXT_TX) { |
3d6b35bc LB |
1832 | int i; |
1833 | ||
f7981c1c LB |
1834 | for (i = 0; i < mp->txq_count; i++) |
1835 | txq_reclaim(mp->txq + i, 0); | |
8fa89bf5 LB |
1836 | |
1837 | /* | |
1838 | * Enough space again in the primary TX queue for a | |
1839 | * full packet? | |
1840 | */ | |
4fdeca3f LB |
1841 | spin_lock(&mp->lock); |
1842 | __txq_maybe_wake(mp->txq); | |
1843 | spin_unlock(&mp->lock); | |
226bb6b7 | 1844 | } |
3d6b35bc | 1845 | |
226bb6b7 LB |
1846 | /* |
1847 | * Any TxEnd interrupts? | |
1848 | */ | |
1849 | if (int_cause & INT_TX_END) { | |
1850 | int i; | |
1851 | ||
1852 | wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_TX_END)); | |
8fa89bf5 LB |
1853 | |
1854 | spin_lock(&mp->lock); | |
226bb6b7 LB |
1855 | for (i = 0; i < 8; i++) { |
1856 | struct tx_queue *txq = mp->txq + i; | |
8fa89bf5 LB |
1857 | u32 hw_desc_ptr; |
1858 | u32 expected_ptr; | |
1859 | ||
1860 | if ((int_cause & (INT_TX_END_0 << i)) == 0) | |
1861 | continue; | |
1862 | ||
1863 | hw_desc_ptr = | |
1864 | rdl(mp, TXQ_CURRENT_DESC_PTR(mp->port_num, i)); | |
1865 | expected_ptr = (u32)txq->tx_desc_dma + | |
1866 | txq->tx_curr_desc * sizeof(struct tx_desc); | |
1867 | ||
1868 | if (hw_desc_ptr != expected_ptr) | |
226bb6b7 LB |
1869 | txq_enable(txq); |
1870 | } | |
8fa89bf5 | 1871 | spin_unlock(&mp->lock); |
13d64285 | 1872 | } |
1da177e4 | 1873 | |
c9df406f | 1874 | return IRQ_HANDLED; |
1da177e4 LT |
1875 | } |
1876 | ||
e5371493 | 1877 | static void phy_reset(struct mv643xx_eth_private *mp) |
1da177e4 | 1878 | { |
45c5d3bc LB |
1879 | int data; |
1880 | ||
1881 | data = smi_reg_read(mp, mp->phy_addr, MII_BMCR); | |
1882 | if (data < 0) | |
1883 | return; | |
1da177e4 | 1884 | |
7f106c1d | 1885 | data |= BMCR_RESET; |
45c5d3bc LB |
1886 | if (smi_reg_write(mp, mp->phy_addr, MII_BMCR, data) < 0) |
1887 | return; | |
1da177e4 | 1888 | |
c9df406f | 1889 | do { |
45c5d3bc LB |
1890 | data = smi_reg_read(mp, mp->phy_addr, MII_BMCR); |
1891 | } while (data >= 0 && data & BMCR_RESET); | |
1da177e4 LT |
1892 | } |
1893 | ||
fc32b0e2 | 1894 | static void port_start(struct mv643xx_eth_private *mp) |
1da177e4 | 1895 | { |
d0412d96 | 1896 | u32 pscr; |
8a578111 | 1897 | int i; |
1da177e4 | 1898 | |
bedfe324 LB |
1899 | /* |
1900 | * Perform PHY reset, if there is a PHY. | |
1901 | */ | |
1902 | if (mp->phy_addr != -1) { | |
1903 | struct ethtool_cmd cmd; | |
1904 | ||
1905 | mv643xx_eth_get_settings(mp->dev, &cmd); | |
1906 | phy_reset(mp); | |
1907 | mv643xx_eth_set_settings(mp->dev, &cmd); | |
1908 | } | |
1da177e4 | 1909 | |
81600eea LB |
1910 | /* |
1911 | * Configure basic link parameters. | |
1912 | */ | |
1913 | pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); | |
1914 | ||
1915 | pscr |= SERIAL_PORT_ENABLE; | |
1916 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); | |
1917 | ||
1918 | pscr |= DO_NOT_FORCE_LINK_FAIL; | |
1919 | if (mp->phy_addr == -1) | |
1920 | pscr |= FORCE_LINK_PASS; | |
1921 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); | |
1922 | ||
1923 | wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE); | |
1924 | ||
13d64285 LB |
1925 | /* |
1926 | * Configure TX path and queues. | |
1927 | */ | |
89df5fdc | 1928 | tx_set_rate(mp, 1000000000, 16777216); |
f7981c1c | 1929 | for (i = 0; i < mp->txq_count; i++) { |
3d6b35bc | 1930 | struct tx_queue *txq = mp->txq + i; |
13d64285 | 1931 | |
6b368f68 | 1932 | txq_reset_hw_ptr(txq); |
89df5fdc LB |
1933 | txq_set_rate(txq, 1000000000, 16777216); |
1934 | txq_set_fixed_prio_mode(txq); | |
13d64285 LB |
1935 | } |
1936 | ||
fc32b0e2 LB |
1937 | /* |
1938 | * Add configured unicast address to address filter table. | |
1939 | */ | |
1940 | uc_addr_set(mp, mp->dev->dev_addr); | |
1da177e4 | 1941 | |
d9a073ea LB |
1942 | /* |
1943 | * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast | |
1944 | * frames to RX queue #0. | |
1945 | */ | |
8a578111 | 1946 | wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000); |
01999873 | 1947 | |
376489a2 LB |
1948 | /* |
1949 | * Treat BPDUs as normal multicasts, and disable partition mode. | |
1950 | */ | |
8a578111 | 1951 | wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000); |
01999873 | 1952 | |
8a578111 | 1953 | /* |
64da80a2 | 1954 | * Enable the receive queues. |
8a578111 | 1955 | */ |
f7981c1c | 1956 | for (i = 0; i < mp->rxq_count; i++) { |
64da80a2 LB |
1957 | struct rx_queue *rxq = mp->rxq + i; |
1958 | int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i); | |
8a578111 | 1959 | u32 addr; |
1da177e4 | 1960 | |
8a578111 LB |
1961 | addr = (u32)rxq->rx_desc_dma; |
1962 | addr += rxq->rx_curr_desc * sizeof(struct rx_desc); | |
1963 | wrl(mp, off, addr); | |
1da177e4 | 1964 | |
8a578111 LB |
1965 | rxq_enable(rxq); |
1966 | } | |
1da177e4 LT |
1967 | } |
1968 | ||
ffd86bbe | 1969 | static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay) |
1da177e4 | 1970 | { |
c9df406f | 1971 | unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; |
773fc3ee | 1972 | u32 val; |
1da177e4 | 1973 | |
773fc3ee LB |
1974 | val = rdl(mp, SDMA_CONFIG(mp->port_num)); |
1975 | if (mp->shared->extended_rx_coal_limit) { | |
1976 | if (coal > 0xffff) | |
1977 | coal = 0xffff; | |
1978 | val &= ~0x023fff80; | |
1979 | val |= (coal & 0x8000) << 10; | |
1980 | val |= (coal & 0x7fff) << 7; | |
1981 | } else { | |
1982 | if (coal > 0x3fff) | |
1983 | coal = 0x3fff; | |
1984 | val &= ~0x003fff00; | |
1985 | val |= (coal & 0x3fff) << 8; | |
1986 | } | |
1987 | wrl(mp, SDMA_CONFIG(mp->port_num), val); | |
1da177e4 LT |
1988 | } |
1989 | ||
ffd86bbe | 1990 | static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay) |
1da177e4 | 1991 | { |
c9df406f | 1992 | unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; |
1da177e4 | 1993 | |
fc32b0e2 LB |
1994 | if (coal > 0x3fff) |
1995 | coal = 0x3fff; | |
1996 | wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4); | |
16e03018 DF |
1997 | } |
1998 | ||
c9df406f | 1999 | static int mv643xx_eth_open(struct net_device *dev) |
16e03018 | 2000 | { |
e5371493 | 2001 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 2002 | int err; |
2257e05c | 2003 | int oom; |
64da80a2 | 2004 | int i; |
16e03018 | 2005 | |
fc32b0e2 LB |
2006 | wrl(mp, INT_CAUSE(mp->port_num), 0); |
2007 | wrl(mp, INT_CAUSE_EXT(mp->port_num), 0); | |
2008 | rdl(mp, INT_CAUSE_EXT(mp->port_num)); | |
c9df406f | 2009 | |
fc32b0e2 | 2010 | err = request_irq(dev->irq, mv643xx_eth_irq, |
2a1867a7 | 2011 | IRQF_SHARED, dev->name, dev); |
c9df406f | 2012 | if (err) { |
fc32b0e2 | 2013 | dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n"); |
c9df406f | 2014 | return -EAGAIN; |
16e03018 DF |
2015 | } |
2016 | ||
fc32b0e2 | 2017 | init_mac_tables(mp); |
16e03018 | 2018 | |
2257e05c LB |
2019 | napi_enable(&mp->napi); |
2020 | ||
2021 | oom = 0; | |
f7981c1c | 2022 | for (i = 0; i < mp->rxq_count; i++) { |
64da80a2 LB |
2023 | err = rxq_init(mp, i); |
2024 | if (err) { | |
2025 | while (--i >= 0) | |
f7981c1c | 2026 | rxq_deinit(mp->rxq + i); |
64da80a2 LB |
2027 | goto out; |
2028 | } | |
2029 | ||
2257e05c LB |
2030 | rxq_refill(mp->rxq + i, INT_MAX, &oom); |
2031 | } | |
2032 | ||
2033 | if (oom) { | |
2034 | mp->rx_oom.expires = jiffies + (HZ / 10); | |
2035 | add_timer(&mp->rx_oom); | |
64da80a2 | 2036 | } |
8a578111 | 2037 | |
f7981c1c | 2038 | for (i = 0; i < mp->txq_count; i++) { |
3d6b35bc LB |
2039 | err = txq_init(mp, i); |
2040 | if (err) { | |
2041 | while (--i >= 0) | |
f7981c1c | 2042 | txq_deinit(mp->txq + i); |
3d6b35bc LB |
2043 | goto out_free; |
2044 | } | |
2045 | } | |
16e03018 | 2046 | |
2f7eb47a | 2047 | netif_carrier_off(dev); |
2f7eb47a | 2048 | |
fc32b0e2 | 2049 | port_start(mp); |
16e03018 | 2050 | |
ffd86bbe LB |
2051 | set_rx_coal(mp, 0); |
2052 | set_tx_coal(mp, 0); | |
16e03018 | 2053 | |
befefe21 | 2054 | wrl(mp, INT_MASK_EXT(mp->port_num), INT_EXT_LINK_PHY | INT_EXT_TX); |
226bb6b7 | 2055 | wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); |
16e03018 | 2056 | |
c9df406f LB |
2057 | return 0; |
2058 | ||
13d64285 | 2059 | |
fc32b0e2 | 2060 | out_free: |
f7981c1c LB |
2061 | for (i = 0; i < mp->rxq_count; i++) |
2062 | rxq_deinit(mp->rxq + i); | |
fc32b0e2 | 2063 | out: |
c9df406f LB |
2064 | free_irq(dev->irq, dev); |
2065 | ||
2066 | return err; | |
16e03018 DF |
2067 | } |
2068 | ||
e5371493 | 2069 | static void port_reset(struct mv643xx_eth_private *mp) |
1da177e4 | 2070 | { |
fc32b0e2 | 2071 | unsigned int data; |
64da80a2 | 2072 | int i; |
1da177e4 | 2073 | |
f7981c1c LB |
2074 | for (i = 0; i < mp->rxq_count; i++) |
2075 | rxq_disable(mp->rxq + i); | |
2076 | for (i = 0; i < mp->txq_count; i++) | |
2077 | txq_disable(mp->txq + i); | |
ae9ae064 LB |
2078 | |
2079 | while (1) { | |
2080 | u32 ps = rdl(mp, PORT_STATUS(mp->port_num)); | |
2081 | ||
2082 | if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY) | |
2083 | break; | |
13d64285 | 2084 | udelay(10); |
ae9ae064 | 2085 | } |
1da177e4 | 2086 | |
c9df406f | 2087 | /* Reset the Enable bit in the Configuration Register */ |
fc32b0e2 LB |
2088 | data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); |
2089 | data &= ~(SERIAL_PORT_ENABLE | | |
2090 | DO_NOT_FORCE_LINK_FAIL | | |
2091 | FORCE_LINK_PASS); | |
2092 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data); | |
1da177e4 LT |
2093 | } |
2094 | ||
c9df406f | 2095 | static int mv643xx_eth_stop(struct net_device *dev) |
1da177e4 | 2096 | { |
e5371493 | 2097 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
64da80a2 | 2098 | int i; |
1da177e4 | 2099 | |
fc32b0e2 LB |
2100 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
2101 | rdl(mp, INT_MASK(mp->port_num)); | |
1da177e4 | 2102 | |
c9df406f | 2103 | napi_disable(&mp->napi); |
78fff83b | 2104 | |
2257e05c LB |
2105 | del_timer_sync(&mp->rx_oom); |
2106 | ||
c9df406f | 2107 | netif_carrier_off(dev); |
1da177e4 | 2108 | |
fc32b0e2 LB |
2109 | free_irq(dev->irq, dev); |
2110 | ||
cc9754b3 | 2111 | port_reset(mp); |
fc32b0e2 | 2112 | mib_counters_update(mp); |
1da177e4 | 2113 | |
f7981c1c LB |
2114 | for (i = 0; i < mp->rxq_count; i++) |
2115 | rxq_deinit(mp->rxq + i); | |
2116 | for (i = 0; i < mp->txq_count; i++) | |
2117 | txq_deinit(mp->txq + i); | |
1da177e4 | 2118 | |
c9df406f | 2119 | return 0; |
1da177e4 LT |
2120 | } |
2121 | ||
fc32b0e2 | 2122 | static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1da177e4 | 2123 | { |
e5371493 | 2124 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 2125 | |
bedfe324 LB |
2126 | if (mp->phy_addr != -1) |
2127 | return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL); | |
2128 | ||
2129 | return -EOPNOTSUPP; | |
1da177e4 LT |
2130 | } |
2131 | ||
c9df406f | 2132 | static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 | 2133 | { |
89df5fdc LB |
2134 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
2135 | ||
fc32b0e2 | 2136 | if (new_mtu < 64 || new_mtu > 9500) |
c9df406f | 2137 | return -EINVAL; |
1da177e4 | 2138 | |
c9df406f | 2139 | dev->mtu = new_mtu; |
89df5fdc LB |
2140 | tx_set_rate(mp, 1000000000, 16777216); |
2141 | ||
c9df406f LB |
2142 | if (!netif_running(dev)) |
2143 | return 0; | |
1da177e4 | 2144 | |
c9df406f LB |
2145 | /* |
2146 | * Stop and then re-open the interface. This will allocate RX | |
2147 | * skbs of the new MTU. | |
2148 | * There is a possible danger that the open will not succeed, | |
fc32b0e2 | 2149 | * due to memory being full. |
c9df406f LB |
2150 | */ |
2151 | mv643xx_eth_stop(dev); | |
2152 | if (mv643xx_eth_open(dev)) { | |
fc32b0e2 LB |
2153 | dev_printk(KERN_ERR, &dev->dev, |
2154 | "fatal error on re-opening device after " | |
2155 | "MTU change\n"); | |
c9df406f LB |
2156 | } |
2157 | ||
2158 | return 0; | |
1da177e4 LT |
2159 | } |
2160 | ||
fc32b0e2 | 2161 | static void tx_timeout_task(struct work_struct *ugly) |
1da177e4 | 2162 | { |
fc32b0e2 | 2163 | struct mv643xx_eth_private *mp; |
1da177e4 | 2164 | |
fc32b0e2 LB |
2165 | mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task); |
2166 | if (netif_running(mp->dev)) { | |
e5ef1de1 | 2167 | netif_tx_stop_all_queues(mp->dev); |
fc32b0e2 LB |
2168 | port_reset(mp); |
2169 | port_start(mp); | |
e5ef1de1 | 2170 | netif_tx_wake_all_queues(mp->dev); |
fc32b0e2 | 2171 | } |
c9df406f LB |
2172 | } |
2173 | ||
c9df406f | 2174 | static void mv643xx_eth_tx_timeout(struct net_device *dev) |
1da177e4 | 2175 | { |
e5371493 | 2176 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 2177 | |
fc32b0e2 | 2178 | dev_printk(KERN_INFO, &dev->dev, "tx timeout\n"); |
d0412d96 | 2179 | |
c9df406f | 2180 | schedule_work(&mp->tx_timeout_task); |
1da177e4 LT |
2181 | } |
2182 | ||
c9df406f | 2183 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fc32b0e2 | 2184 | static void mv643xx_eth_netpoll(struct net_device *dev) |
9f8dd319 | 2185 | { |
fc32b0e2 | 2186 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 2187 | |
fc32b0e2 LB |
2188 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
2189 | rdl(mp, INT_MASK(mp->port_num)); | |
c9df406f | 2190 | |
fc32b0e2 | 2191 | mv643xx_eth_irq(dev->irq, dev); |
c9df406f | 2192 | |
f2ca60f2 | 2193 | wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); |
9f8dd319 | 2194 | } |
c9df406f | 2195 | #endif |
9f8dd319 | 2196 | |
fc32b0e2 | 2197 | static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg) |
9f8dd319 | 2198 | { |
e5371493 | 2199 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
45c5d3bc | 2200 | return smi_reg_read(mp, addr, reg); |
9f8dd319 DF |
2201 | } |
2202 | ||
fc32b0e2 | 2203 | static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val) |
9f8dd319 | 2204 | { |
e5371493 | 2205 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
fc32b0e2 | 2206 | smi_reg_write(mp, addr, reg, val); |
c9df406f | 2207 | } |
9f8dd319 | 2208 | |
9f8dd319 | 2209 | |
c9df406f | 2210 | /* platform glue ************************************************************/ |
e5371493 LB |
2211 | static void |
2212 | mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp, | |
2213 | struct mbus_dram_target_info *dram) | |
c9df406f | 2214 | { |
cc9754b3 | 2215 | void __iomem *base = msp->base; |
c9df406f LB |
2216 | u32 win_enable; |
2217 | u32 win_protect; | |
2218 | int i; | |
9f8dd319 | 2219 | |
c9df406f LB |
2220 | for (i = 0; i < 6; i++) { |
2221 | writel(0, base + WINDOW_BASE(i)); | |
2222 | writel(0, base + WINDOW_SIZE(i)); | |
2223 | if (i < 4) | |
2224 | writel(0, base + WINDOW_REMAP_HIGH(i)); | |
9f8dd319 DF |
2225 | } |
2226 | ||
c9df406f LB |
2227 | win_enable = 0x3f; |
2228 | win_protect = 0; | |
2229 | ||
2230 | for (i = 0; i < dram->num_cs; i++) { | |
2231 | struct mbus_dram_window *cs = dram->cs + i; | |
2232 | ||
2233 | writel((cs->base & 0xffff0000) | | |
2234 | (cs->mbus_attr << 8) | | |
2235 | dram->mbus_dram_target_id, base + WINDOW_BASE(i)); | |
2236 | writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); | |
2237 | ||
2238 | win_enable &= ~(1 << i); | |
2239 | win_protect |= 3 << (2 * i); | |
2240 | } | |
2241 | ||
2242 | writel(win_enable, base + WINDOW_BAR_ENABLE); | |
2243 | msp->win_protect = win_protect; | |
9f8dd319 DF |
2244 | } |
2245 | ||
773fc3ee LB |
2246 | static void infer_hw_params(struct mv643xx_eth_shared_private *msp) |
2247 | { | |
2248 | /* | |
2249 | * Check whether we have a 14-bit coal limit field in bits | |
2250 | * [21:8], or a 16-bit coal limit in bits [25,21:7] of the | |
2251 | * SDMA config register. | |
2252 | */ | |
2253 | writel(0x02000000, msp->base + SDMA_CONFIG(0)); | |
2254 | if (readl(msp->base + SDMA_CONFIG(0)) & 0x02000000) | |
2255 | msp->extended_rx_coal_limit = 1; | |
2256 | else | |
2257 | msp->extended_rx_coal_limit = 0; | |
1e881592 LB |
2258 | |
2259 | /* | |
2260 | * Check whether the TX rate control registers are in the | |
2261 | * old or the new place. | |
2262 | */ | |
2263 | writel(1, msp->base + TX_BW_MTU_MOVED(0)); | |
2264 | if (readl(msp->base + TX_BW_MTU_MOVED(0)) & 1) | |
2265 | msp->tx_bw_control_moved = 1; | |
2266 | else | |
2267 | msp->tx_bw_control_moved = 0; | |
773fc3ee LB |
2268 | } |
2269 | ||
c9df406f | 2270 | static int mv643xx_eth_shared_probe(struct platform_device *pdev) |
9f8dd319 | 2271 | { |
e5371493 | 2272 | static int mv643xx_eth_version_printed = 0; |
c9df406f | 2273 | struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; |
e5371493 | 2274 | struct mv643xx_eth_shared_private *msp; |
c9df406f LB |
2275 | struct resource *res; |
2276 | int ret; | |
9f8dd319 | 2277 | |
e5371493 | 2278 | if (!mv643xx_eth_version_printed++) |
7dde154d LB |
2279 | printk(KERN_NOTICE "MV-643xx 10/100/1000 ethernet " |
2280 | "driver version %s\n", mv643xx_eth_driver_version); | |
9f8dd319 | 2281 | |
c9df406f LB |
2282 | ret = -EINVAL; |
2283 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2284 | if (res == NULL) | |
2285 | goto out; | |
9f8dd319 | 2286 | |
c9df406f LB |
2287 | ret = -ENOMEM; |
2288 | msp = kmalloc(sizeof(*msp), GFP_KERNEL); | |
2289 | if (msp == NULL) | |
2290 | goto out; | |
2291 | memset(msp, 0, sizeof(*msp)); | |
2292 | ||
cc9754b3 LB |
2293 | msp->base = ioremap(res->start, res->end - res->start + 1); |
2294 | if (msp->base == NULL) | |
c9df406f LB |
2295 | goto out_free; |
2296 | ||
fc0eb9f2 LB |
2297 | msp->smi = msp; |
2298 | if (pd != NULL && pd->shared_smi != NULL) | |
2299 | msp->smi = platform_get_drvdata(pd->shared_smi); | |
2300 | ||
2b3ba0e3 | 2301 | mutex_init(&msp->phy_lock); |
c9df406f | 2302 | |
45c5d3bc LB |
2303 | msp->err_interrupt = NO_IRQ; |
2304 | init_waitqueue_head(&msp->smi_busy_wait); | |
2305 | ||
2306 | /* | |
2307 | * Check whether the error interrupt is hooked up. | |
2308 | */ | |
2309 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
2310 | if (res != NULL) { | |
2311 | int err; | |
2312 | ||
2313 | err = request_irq(res->start, mv643xx_eth_err_irq, | |
2314 | IRQF_SHARED, "mv643xx_eth", msp); | |
2315 | if (!err) { | |
2316 | writel(ERR_INT_SMI_DONE, msp->base + ERR_INT_MASK); | |
2317 | msp->err_interrupt = res->start; | |
2318 | } | |
2319 | } | |
2320 | ||
c9df406f LB |
2321 | /* |
2322 | * (Re-)program MBUS remapping windows if we are asked to. | |
2323 | */ | |
2324 | if (pd != NULL && pd->dram != NULL) | |
2325 | mv643xx_eth_conf_mbus_windows(msp, pd->dram); | |
2326 | ||
fc32b0e2 LB |
2327 | /* |
2328 | * Detect hardware parameters. | |
2329 | */ | |
2330 | msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; | |
773fc3ee | 2331 | infer_hw_params(msp); |
fc32b0e2 LB |
2332 | |
2333 | platform_set_drvdata(pdev, msp); | |
2334 | ||
c9df406f LB |
2335 | return 0; |
2336 | ||
2337 | out_free: | |
2338 | kfree(msp); | |
2339 | out: | |
2340 | return ret; | |
2341 | } | |
2342 | ||
2343 | static int mv643xx_eth_shared_remove(struct platform_device *pdev) | |
2344 | { | |
e5371493 | 2345 | struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev); |
c9df406f | 2346 | |
45c5d3bc LB |
2347 | if (msp->err_interrupt != NO_IRQ) |
2348 | free_irq(msp->err_interrupt, msp); | |
cc9754b3 | 2349 | iounmap(msp->base); |
c9df406f LB |
2350 | kfree(msp); |
2351 | ||
2352 | return 0; | |
9f8dd319 DF |
2353 | } |
2354 | ||
c9df406f | 2355 | static struct platform_driver mv643xx_eth_shared_driver = { |
fc32b0e2 LB |
2356 | .probe = mv643xx_eth_shared_probe, |
2357 | .remove = mv643xx_eth_shared_remove, | |
c9df406f | 2358 | .driver = { |
fc32b0e2 | 2359 | .name = MV643XX_ETH_SHARED_NAME, |
c9df406f LB |
2360 | .owner = THIS_MODULE, |
2361 | }, | |
2362 | }; | |
2363 | ||
e5371493 | 2364 | static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr) |
1da177e4 | 2365 | { |
c9df406f | 2366 | int addr_shift = 5 * mp->port_num; |
fc32b0e2 | 2367 | u32 data; |
1da177e4 | 2368 | |
fc32b0e2 LB |
2369 | data = rdl(mp, PHY_ADDR); |
2370 | data &= ~(0x1f << addr_shift); | |
2371 | data |= (phy_addr & 0x1f) << addr_shift; | |
2372 | wrl(mp, PHY_ADDR, data); | |
1da177e4 LT |
2373 | } |
2374 | ||
e5371493 | 2375 | static int phy_addr_get(struct mv643xx_eth_private *mp) |
1da177e4 | 2376 | { |
fc32b0e2 LB |
2377 | unsigned int data; |
2378 | ||
2379 | data = rdl(mp, PHY_ADDR); | |
2380 | ||
2381 | return (data >> (5 * mp->port_num)) & 0x1f; | |
2382 | } | |
2383 | ||
2384 | static void set_params(struct mv643xx_eth_private *mp, | |
2385 | struct mv643xx_eth_platform_data *pd) | |
2386 | { | |
2387 | struct net_device *dev = mp->dev; | |
2388 | ||
2389 | if (is_valid_ether_addr(pd->mac_addr)) | |
2390 | memcpy(dev->dev_addr, pd->mac_addr, 6); | |
2391 | else | |
2392 | uc_addr_get(mp, dev->dev_addr); | |
2393 | ||
ac840605 | 2394 | if (pd->phy_addr == MV643XX_ETH_PHY_NONE) { |
fc32b0e2 LB |
2395 | mp->phy_addr = -1; |
2396 | } else { | |
ac840605 | 2397 | if (pd->phy_addr != MV643XX_ETH_PHY_ADDR_DEFAULT) { |
fc32b0e2 LB |
2398 | mp->phy_addr = pd->phy_addr & 0x3f; |
2399 | phy_addr_set(mp, mp->phy_addr); | |
2400 | } else { | |
2401 | mp->phy_addr = phy_addr_get(mp); | |
2402 | } | |
2403 | } | |
1da177e4 | 2404 | |
fc32b0e2 LB |
2405 | mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE; |
2406 | if (pd->rx_queue_size) | |
2407 | mp->default_rx_ring_size = pd->rx_queue_size; | |
2408 | mp->rx_desc_sram_addr = pd->rx_sram_addr; | |
2409 | mp->rx_desc_sram_size = pd->rx_sram_size; | |
1da177e4 | 2410 | |
f7981c1c | 2411 | mp->rxq_count = pd->rx_queue_count ? : 1; |
64da80a2 | 2412 | |
fc32b0e2 LB |
2413 | mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE; |
2414 | if (pd->tx_queue_size) | |
2415 | mp->default_tx_ring_size = pd->tx_queue_size; | |
2416 | mp->tx_desc_sram_addr = pd->tx_sram_addr; | |
2417 | mp->tx_desc_sram_size = pd->tx_sram_size; | |
3d6b35bc | 2418 | |
f7981c1c | 2419 | mp->txq_count = pd->tx_queue_count ? : 1; |
1da177e4 LT |
2420 | } |
2421 | ||
e5371493 | 2422 | static int phy_detect(struct mv643xx_eth_private *mp) |
1da177e4 | 2423 | { |
45c5d3bc LB |
2424 | int data; |
2425 | int data2; | |
2426 | ||
2427 | data = smi_reg_read(mp, mp->phy_addr, MII_BMCR); | |
2428 | if (data < 0) | |
2429 | return -ENODEV; | |
2430 | ||
2431 | if (smi_reg_write(mp, mp->phy_addr, MII_BMCR, data ^ BMCR_ANENABLE) < 0) | |
2432 | return -ENODEV; | |
fc32b0e2 | 2433 | |
45c5d3bc LB |
2434 | data2 = smi_reg_read(mp, mp->phy_addr, MII_BMCR); |
2435 | if (data2 < 0) | |
2436 | return -ENODEV; | |
1da177e4 | 2437 | |
7f106c1d | 2438 | if (((data ^ data2) & BMCR_ANENABLE) == 0) |
fc32b0e2 | 2439 | return -ENODEV; |
1da177e4 | 2440 | |
7f106c1d | 2441 | smi_reg_write(mp, mp->phy_addr, MII_BMCR, data); |
1da177e4 | 2442 | |
c9df406f | 2443 | return 0; |
1da177e4 LT |
2444 | } |
2445 | ||
fc32b0e2 LB |
2446 | static int phy_init(struct mv643xx_eth_private *mp, |
2447 | struct mv643xx_eth_platform_data *pd) | |
c28a4f89 | 2448 | { |
fc32b0e2 LB |
2449 | struct ethtool_cmd cmd; |
2450 | int err; | |
c28a4f89 | 2451 | |
fc32b0e2 LB |
2452 | err = phy_detect(mp); |
2453 | if (err) { | |
2454 | dev_printk(KERN_INFO, &mp->dev->dev, | |
2455 | "no PHY detected at addr %d\n", mp->phy_addr); | |
2456 | return err; | |
2457 | } | |
2458 | phy_reset(mp); | |
2459 | ||
2460 | mp->mii.phy_id = mp->phy_addr; | |
2461 | mp->mii.phy_id_mask = 0x3f; | |
2462 | mp->mii.reg_num_mask = 0x1f; | |
2463 | mp->mii.dev = mp->dev; | |
2464 | mp->mii.mdio_read = mv643xx_eth_mdio_read; | |
2465 | mp->mii.mdio_write = mv643xx_eth_mdio_write; | |
c28a4f89 | 2466 | |
fc32b0e2 | 2467 | mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii); |
c9df406f | 2468 | |
fc32b0e2 LB |
2469 | memset(&cmd, 0, sizeof(cmd)); |
2470 | ||
2471 | cmd.port = PORT_MII; | |
2472 | cmd.transceiver = XCVR_INTERNAL; | |
2473 | cmd.phy_address = mp->phy_addr; | |
2474 | if (pd->speed == 0) { | |
2475 | cmd.autoneg = AUTONEG_ENABLE; | |
2476 | cmd.speed = SPEED_100; | |
2477 | cmd.advertising = ADVERTISED_10baseT_Half | | |
2478 | ADVERTISED_10baseT_Full | | |
2479 | ADVERTISED_100baseT_Half | | |
2480 | ADVERTISED_100baseT_Full; | |
c9df406f | 2481 | if (mp->mii.supports_gmii) |
fc32b0e2 | 2482 | cmd.advertising |= ADVERTISED_1000baseT_Full; |
c9df406f | 2483 | } else { |
fc32b0e2 LB |
2484 | cmd.autoneg = AUTONEG_DISABLE; |
2485 | cmd.speed = pd->speed; | |
2486 | cmd.duplex = pd->duplex; | |
c9df406f | 2487 | } |
fc32b0e2 | 2488 | |
fc32b0e2 LB |
2489 | mv643xx_eth_set_settings(mp->dev, &cmd); |
2490 | ||
2491 | return 0; | |
c28a4f89 JC |
2492 | } |
2493 | ||
81600eea LB |
2494 | static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex) |
2495 | { | |
2496 | u32 pscr; | |
2497 | ||
2498 | pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); | |
2499 | if (pscr & SERIAL_PORT_ENABLE) { | |
2500 | pscr &= ~SERIAL_PORT_ENABLE; | |
2501 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); | |
2502 | } | |
2503 | ||
2504 | pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED; | |
2505 | if (mp->phy_addr == -1) { | |
2506 | pscr |= DISABLE_AUTO_NEG_SPEED_GMII; | |
2507 | if (speed == SPEED_1000) | |
2508 | pscr |= SET_GMII_SPEED_TO_1000; | |
2509 | else if (speed == SPEED_100) | |
2510 | pscr |= SET_MII_SPEED_TO_100; | |
2511 | ||
2512 | pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL; | |
2513 | ||
2514 | pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX; | |
2515 | if (duplex == DUPLEX_FULL) | |
2516 | pscr |= SET_FULL_DUPLEX_MODE; | |
2517 | } | |
2518 | ||
2519 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); | |
2520 | } | |
2521 | ||
c9df406f | 2522 | static int mv643xx_eth_probe(struct platform_device *pdev) |
1da177e4 | 2523 | { |
c9df406f | 2524 | struct mv643xx_eth_platform_data *pd; |
e5371493 | 2525 | struct mv643xx_eth_private *mp; |
c9df406f | 2526 | struct net_device *dev; |
c9df406f | 2527 | struct resource *res; |
c9df406f | 2528 | DECLARE_MAC_BUF(mac); |
fc32b0e2 | 2529 | int err; |
1da177e4 | 2530 | |
c9df406f LB |
2531 | pd = pdev->dev.platform_data; |
2532 | if (pd == NULL) { | |
fc32b0e2 LB |
2533 | dev_printk(KERN_ERR, &pdev->dev, |
2534 | "no mv643xx_eth_platform_data\n"); | |
c9df406f LB |
2535 | return -ENODEV; |
2536 | } | |
1da177e4 | 2537 | |
c9df406f | 2538 | if (pd->shared == NULL) { |
fc32b0e2 LB |
2539 | dev_printk(KERN_ERR, &pdev->dev, |
2540 | "no mv643xx_eth_platform_data->shared\n"); | |
c9df406f LB |
2541 | return -ENODEV; |
2542 | } | |
8f518703 | 2543 | |
e5ef1de1 | 2544 | dev = alloc_etherdev_mq(sizeof(struct mv643xx_eth_private), 8); |
c9df406f LB |
2545 | if (!dev) |
2546 | return -ENOMEM; | |
1da177e4 | 2547 | |
c9df406f | 2548 | mp = netdev_priv(dev); |
fc32b0e2 LB |
2549 | platform_set_drvdata(pdev, mp); |
2550 | ||
2551 | mp->shared = platform_get_drvdata(pd->shared); | |
2552 | mp->port_num = pd->port_number; | |
2553 | ||
c9df406f | 2554 | mp->dev = dev; |
78fff83b | 2555 | |
fc32b0e2 | 2556 | set_params(mp, pd); |
e5ef1de1 | 2557 | dev->real_num_tx_queues = mp->txq_count; |
fc32b0e2 LB |
2558 | |
2559 | spin_lock_init(&mp->lock); | |
2560 | ||
2561 | mib_counters_clear(mp); | |
2562 | INIT_WORK(&mp->tx_timeout_task, tx_timeout_task); | |
2563 | ||
bedfe324 LB |
2564 | if (mp->phy_addr != -1) { |
2565 | err = phy_init(mp, pd); | |
2566 | if (err) | |
2567 | goto out; | |
2568 | ||
2569 | SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); | |
2570 | } else { | |
2571 | SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless); | |
2572 | } | |
81600eea | 2573 | init_pscr(mp, pd->speed, pd->duplex); |
fc32b0e2 | 2574 | |
2257e05c LB |
2575 | netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 128); |
2576 | ||
2577 | init_timer(&mp->rx_oom); | |
2578 | mp->rx_oom.data = (unsigned long)mp; | |
2579 | mp->rx_oom.function = oom_timer_wrapper; | |
2580 | ||
fc32b0e2 | 2581 | |
c9df406f LB |
2582 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
2583 | BUG_ON(!res); | |
2584 | dev->irq = res->start; | |
1da177e4 | 2585 | |
fc32b0e2 | 2586 | dev->hard_start_xmit = mv643xx_eth_xmit; |
c9df406f LB |
2587 | dev->open = mv643xx_eth_open; |
2588 | dev->stop = mv643xx_eth_stop; | |
c9df406f | 2589 | dev->set_multicast_list = mv643xx_eth_set_rx_mode; |
fc32b0e2 LB |
2590 | dev->set_mac_address = mv643xx_eth_set_mac_address; |
2591 | dev->do_ioctl = mv643xx_eth_ioctl; | |
2592 | dev->change_mtu = mv643xx_eth_change_mtu; | |
c9df406f | 2593 | dev->tx_timeout = mv643xx_eth_tx_timeout; |
c9df406f | 2594 | #ifdef CONFIG_NET_POLL_CONTROLLER |
e5371493 | 2595 | dev->poll_controller = mv643xx_eth_netpoll; |
c9df406f | 2596 | #endif |
c9df406f LB |
2597 | dev->watchdog_timeo = 2 * HZ; |
2598 | dev->base_addr = 0; | |
1da177e4 | 2599 | |
c9df406f | 2600 | dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; |
e32b6617 | 2601 | dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM; |
1da177e4 | 2602 | |
fc32b0e2 | 2603 | SET_NETDEV_DEV(dev, &pdev->dev); |
8f518703 | 2604 | |
c9df406f | 2605 | if (mp->shared->win_protect) |
fc32b0e2 | 2606 | wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect); |
1da177e4 | 2607 | |
c9df406f LB |
2608 | err = register_netdev(dev); |
2609 | if (err) | |
2610 | goto out; | |
1da177e4 | 2611 | |
fc32b0e2 LB |
2612 | dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n", |
2613 | mp->port_num, print_mac(mac, dev->dev_addr)); | |
1da177e4 | 2614 | |
13d64285 | 2615 | if (mp->tx_desc_sram_size > 0) |
fc32b0e2 | 2616 | dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n"); |
1da177e4 | 2617 | |
c9df406f | 2618 | return 0; |
1da177e4 | 2619 | |
c9df406f LB |
2620 | out: |
2621 | free_netdev(dev); | |
1da177e4 | 2622 | |
c9df406f | 2623 | return err; |
1da177e4 LT |
2624 | } |
2625 | ||
c9df406f | 2626 | static int mv643xx_eth_remove(struct platform_device *pdev) |
1da177e4 | 2627 | { |
fc32b0e2 | 2628 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); |
1da177e4 | 2629 | |
fc32b0e2 | 2630 | unregister_netdev(mp->dev); |
c9df406f | 2631 | flush_scheduled_work(); |
fc32b0e2 | 2632 | free_netdev(mp->dev); |
c9df406f | 2633 | |
c9df406f | 2634 | platform_set_drvdata(pdev, NULL); |
fc32b0e2 | 2635 | |
c9df406f | 2636 | return 0; |
1da177e4 LT |
2637 | } |
2638 | ||
c9df406f | 2639 | static void mv643xx_eth_shutdown(struct platform_device *pdev) |
d0412d96 | 2640 | { |
fc32b0e2 | 2641 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); |
d0412d96 | 2642 | |
c9df406f | 2643 | /* Mask all interrupts on ethernet port */ |
fc32b0e2 LB |
2644 | wrl(mp, INT_MASK(mp->port_num), 0); |
2645 | rdl(mp, INT_MASK(mp->port_num)); | |
c9df406f | 2646 | |
fc32b0e2 LB |
2647 | if (netif_running(mp->dev)) |
2648 | port_reset(mp); | |
d0412d96 JC |
2649 | } |
2650 | ||
c9df406f | 2651 | static struct platform_driver mv643xx_eth_driver = { |
fc32b0e2 LB |
2652 | .probe = mv643xx_eth_probe, |
2653 | .remove = mv643xx_eth_remove, | |
2654 | .shutdown = mv643xx_eth_shutdown, | |
c9df406f | 2655 | .driver = { |
fc32b0e2 | 2656 | .name = MV643XX_ETH_NAME, |
c9df406f LB |
2657 | .owner = THIS_MODULE, |
2658 | }, | |
2659 | }; | |
2660 | ||
e5371493 | 2661 | static int __init mv643xx_eth_init_module(void) |
d0412d96 | 2662 | { |
c9df406f | 2663 | int rc; |
d0412d96 | 2664 | |
c9df406f LB |
2665 | rc = platform_driver_register(&mv643xx_eth_shared_driver); |
2666 | if (!rc) { | |
2667 | rc = platform_driver_register(&mv643xx_eth_driver); | |
2668 | if (rc) | |
2669 | platform_driver_unregister(&mv643xx_eth_shared_driver); | |
2670 | } | |
fc32b0e2 | 2671 | |
c9df406f | 2672 | return rc; |
d0412d96 | 2673 | } |
fc32b0e2 | 2674 | module_init(mv643xx_eth_init_module); |
d0412d96 | 2675 | |
e5371493 | 2676 | static void __exit mv643xx_eth_cleanup_module(void) |
d0412d96 | 2677 | { |
c9df406f LB |
2678 | platform_driver_unregister(&mv643xx_eth_driver); |
2679 | platform_driver_unregister(&mv643xx_eth_shared_driver); | |
d0412d96 | 2680 | } |
e5371493 | 2681 | module_exit(mv643xx_eth_cleanup_module); |
1da177e4 | 2682 | |
45675bc6 LB |
2683 | MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, " |
2684 | "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek"); | |
c9df406f | 2685 | MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); |
fc32b0e2 | 2686 | MODULE_LICENSE("GPL"); |
c9df406f | 2687 | MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); |
fc32b0e2 | 2688 | MODULE_ALIAS("platform:" MV643XX_ETH_NAME); |