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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 LB |
57 | static char mv643xx_eth_driver_name[] = "mv643xx_eth"; |
58 | static char mv643xx_eth_driver_version[] = "1.0"; | |
c9df406f | 59 | |
e5371493 LB |
60 | #define MV643XX_ETH_CHECKSUM_OFFLOAD_TX |
61 | #define MV643XX_ETH_NAPI | |
62 | #define MV643XX_ETH_TX_FAST_REFILL | |
fbd6a754 | 63 | |
e5371493 | 64 | #ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX |
fbd6a754 LB |
65 | #define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1) |
66 | #else | |
67 | #define MAX_DESCS_PER_SKB 1 | |
68 | #endif | |
69 | ||
fbd6a754 LB |
70 | /* |
71 | * Registers shared between all ports. | |
72 | */ | |
3cb4667c LB |
73 | #define PHY_ADDR 0x0000 |
74 | #define SMI_REG 0x0004 | |
75 | #define WINDOW_BASE(w) (0x0200 + ((w) << 3)) | |
76 | #define WINDOW_SIZE(w) (0x0204 + ((w) << 3)) | |
77 | #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2)) | |
78 | #define WINDOW_BAR_ENABLE 0x0290 | |
79 | #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4)) | |
fbd6a754 LB |
80 | |
81 | /* | |
82 | * Per-port registers. | |
83 | */ | |
3cb4667c | 84 | #define PORT_CONFIG(p) (0x0400 + ((p) << 10)) |
d9a073ea | 85 | #define UNICAST_PROMISCUOUS_MODE 0x00000001 |
3cb4667c LB |
86 | #define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10)) |
87 | #define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10)) | |
88 | #define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10)) | |
89 | #define SDMA_CONFIG(p) (0x041c + ((p) << 10)) | |
90 | #define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10)) | |
91 | #define PORT_STATUS(p) (0x0444 + ((p) << 10)) | |
a2a41689 | 92 | #define TX_FIFO_EMPTY 0x00000400 |
3cb4667c LB |
93 | #define TXQ_COMMAND(p) (0x0448 + ((p) << 10)) |
94 | #define TX_BW_MTU(p) (0x0458 + ((p) << 10)) | |
95 | #define INT_CAUSE(p) (0x0460 + ((p) << 10)) | |
073a345c LB |
96 | #define INT_RX 0x00000804 |
97 | #define INT_EXT 0x00000002 | |
3cb4667c | 98 | #define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10)) |
073a345c LB |
99 | #define INT_EXT_LINK 0x00100000 |
100 | #define INT_EXT_PHY 0x00010000 | |
101 | #define INT_EXT_TX_ERROR_0 0x00000100 | |
102 | #define INT_EXT_TX_0 0x00000001 | |
103 | #define INT_EXT_TX 0x00000101 | |
3cb4667c LB |
104 | #define INT_MASK(p) (0x0468 + ((p) << 10)) |
105 | #define INT_MASK_EXT(p) (0x046c + ((p) << 10)) | |
106 | #define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10)) | |
107 | #define RXQ_CURRENT_DESC_PTR(p) (0x060c + ((p) << 10)) | |
108 | #define RXQ_COMMAND(p) (0x0680 + ((p) << 10)) | |
109 | #define TXQ_CURRENT_DESC_PTR(p) (0x06c0 + ((p) << 10)) | |
110 | #define MIB_COUNTERS(p) (0x1000 + ((p) << 7)) | |
111 | #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10)) | |
112 | #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10)) | |
113 | #define UNICAST_TABLE(p) (0x1600 + ((p) << 10)) | |
fbd6a754 | 114 | |
2679a550 LB |
115 | |
116 | /* | |
117 | * SDMA configuration register. | |
118 | */ | |
fbd6a754 | 119 | #define RX_BURST_SIZE_4_64BIT (2 << 1) |
fbd6a754 | 120 | #define BLM_RX_NO_SWAP (1 << 4) |
fbd6a754 | 121 | #define BLM_TX_NO_SWAP (1 << 5) |
fbd6a754 | 122 | #define TX_BURST_SIZE_4_64BIT (2 << 22) |
fbd6a754 LB |
123 | |
124 | #if defined(__BIG_ENDIAN) | |
125 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ | |
126 | RX_BURST_SIZE_4_64BIT | \ | |
fbd6a754 LB |
127 | TX_BURST_SIZE_4_64BIT |
128 | #elif defined(__LITTLE_ENDIAN) | |
129 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ | |
130 | RX_BURST_SIZE_4_64BIT | \ | |
131 | BLM_RX_NO_SWAP | \ | |
132 | BLM_TX_NO_SWAP | \ | |
fbd6a754 LB |
133 | TX_BURST_SIZE_4_64BIT |
134 | #else | |
135 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined | |
136 | #endif | |
137 | ||
2beff77b LB |
138 | |
139 | /* | |
140 | * Port serial control register. | |
141 | */ | |
142 | #define SET_MII_SPEED_TO_100 (1 << 24) | |
143 | #define SET_GMII_SPEED_TO_1000 (1 << 23) | |
144 | #define SET_FULL_DUPLEX_MODE (1 << 21) | |
fbd6a754 | 145 | #define MAX_RX_PACKET_1522BYTE (1 << 17) |
fbd6a754 LB |
146 | #define MAX_RX_PACKET_9700BYTE (5 << 17) |
147 | #define MAX_RX_PACKET_MASK (7 << 17) | |
2beff77b LB |
148 | #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13) |
149 | #define DO_NOT_FORCE_LINK_FAIL (1 << 10) | |
150 | #define SERIAL_PORT_CONTROL_RESERVED (1 << 9) | |
151 | #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3) | |
152 | #define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2) | |
153 | #define FORCE_LINK_PASS (1 << 1) | |
154 | #define SERIAL_PORT_ENABLE (1 << 0) | |
fbd6a754 | 155 | |
cc9754b3 LB |
156 | #define DEFAULT_RX_QUEUE_SIZE 400 |
157 | #define DEFAULT_TX_QUEUE_SIZE 800 | |
fbd6a754 | 158 | |
fbd6a754 | 159 | |
7ca72a3b LB |
160 | /* |
161 | * RX/TX descriptors. | |
fbd6a754 LB |
162 | */ |
163 | #if defined(__BIG_ENDIAN) | |
cc9754b3 | 164 | struct rx_desc { |
fbd6a754 LB |
165 | u16 byte_cnt; /* Descriptor buffer byte count */ |
166 | u16 buf_size; /* Buffer size */ | |
167 | u32 cmd_sts; /* Descriptor command status */ | |
168 | u32 next_desc_ptr; /* Next descriptor pointer */ | |
169 | u32 buf_ptr; /* Descriptor buffer pointer */ | |
170 | }; | |
171 | ||
cc9754b3 | 172 | struct tx_desc { |
fbd6a754 LB |
173 | u16 byte_cnt; /* buffer byte count */ |
174 | u16 l4i_chk; /* CPU provided TCP checksum */ | |
175 | u32 cmd_sts; /* Command/status field */ | |
176 | u32 next_desc_ptr; /* Pointer to next descriptor */ | |
177 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ | |
178 | }; | |
179 | #elif defined(__LITTLE_ENDIAN) | |
cc9754b3 | 180 | struct rx_desc { |
fbd6a754 LB |
181 | u32 cmd_sts; /* Descriptor command status */ |
182 | u16 buf_size; /* Buffer size */ | |
183 | u16 byte_cnt; /* Descriptor buffer byte count */ | |
184 | u32 buf_ptr; /* Descriptor buffer pointer */ | |
185 | u32 next_desc_ptr; /* Next descriptor pointer */ | |
186 | }; | |
187 | ||
cc9754b3 | 188 | struct tx_desc { |
fbd6a754 LB |
189 | u32 cmd_sts; /* Command/status field */ |
190 | u16 l4i_chk; /* CPU provided TCP checksum */ | |
191 | u16 byte_cnt; /* buffer byte count */ | |
192 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ | |
193 | u32 next_desc_ptr; /* Pointer to next descriptor */ | |
194 | }; | |
195 | #else | |
196 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined | |
197 | #endif | |
198 | ||
7ca72a3b | 199 | /* RX & TX descriptor command */ |
cc9754b3 | 200 | #define BUFFER_OWNED_BY_DMA 0x80000000 |
7ca72a3b LB |
201 | |
202 | /* RX & TX descriptor status */ | |
cc9754b3 | 203 | #define ERROR_SUMMARY 0x00000001 |
7ca72a3b LB |
204 | |
205 | /* RX descriptor status */ | |
cc9754b3 LB |
206 | #define LAYER_4_CHECKSUM_OK 0x40000000 |
207 | #define RX_ENABLE_INTERRUPT 0x20000000 | |
208 | #define RX_FIRST_DESC 0x08000000 | |
209 | #define RX_LAST_DESC 0x04000000 | |
7ca72a3b LB |
210 | |
211 | /* TX descriptor command */ | |
cc9754b3 LB |
212 | #define TX_ENABLE_INTERRUPT 0x00800000 |
213 | #define GEN_CRC 0x00400000 | |
214 | #define TX_FIRST_DESC 0x00200000 | |
215 | #define TX_LAST_DESC 0x00100000 | |
216 | #define ZERO_PADDING 0x00080000 | |
217 | #define GEN_IP_V4_CHECKSUM 0x00040000 | |
218 | #define GEN_TCP_UDP_CHECKSUM 0x00020000 | |
219 | #define UDP_FRAME 0x00010000 | |
7ca72a3b | 220 | |
cc9754b3 | 221 | #define TX_IHL_SHIFT 11 |
7ca72a3b LB |
222 | |
223 | ||
c9df406f | 224 | /* global *******************************************************************/ |
e5371493 | 225 | struct mv643xx_eth_shared_private { |
fc32b0e2 LB |
226 | /* |
227 | * Ethernet controller base address. | |
228 | */ | |
cc9754b3 | 229 | void __iomem *base; |
c9df406f | 230 | |
fc32b0e2 LB |
231 | /* |
232 | * Protects access to SMI_REG, which is shared between ports. | |
233 | */ | |
c9df406f LB |
234 | spinlock_t phy_lock; |
235 | ||
fc32b0e2 LB |
236 | /* |
237 | * Per-port MBUS window access register value. | |
238 | */ | |
c9df406f LB |
239 | u32 win_protect; |
240 | ||
fc32b0e2 LB |
241 | /* |
242 | * Hardware-specific parameters. | |
243 | */ | |
c9df406f LB |
244 | unsigned int t_clk; |
245 | }; | |
246 | ||
247 | ||
248 | /* per-port *****************************************************************/ | |
e5371493 | 249 | struct mib_counters { |
fbd6a754 LB |
250 | u64 good_octets_received; |
251 | u32 bad_octets_received; | |
252 | u32 internal_mac_transmit_err; | |
253 | u32 good_frames_received; | |
254 | u32 bad_frames_received; | |
255 | u32 broadcast_frames_received; | |
256 | u32 multicast_frames_received; | |
257 | u32 frames_64_octets; | |
258 | u32 frames_65_to_127_octets; | |
259 | u32 frames_128_to_255_octets; | |
260 | u32 frames_256_to_511_octets; | |
261 | u32 frames_512_to_1023_octets; | |
262 | u32 frames_1024_to_max_octets; | |
263 | u64 good_octets_sent; | |
264 | u32 good_frames_sent; | |
265 | u32 excessive_collision; | |
266 | u32 multicast_frames_sent; | |
267 | u32 broadcast_frames_sent; | |
268 | u32 unrec_mac_control_received; | |
269 | u32 fc_sent; | |
270 | u32 good_fc_received; | |
271 | u32 bad_fc_received; | |
272 | u32 undersize_received; | |
273 | u32 fragments_received; | |
274 | u32 oversize_received; | |
275 | u32 jabber_received; | |
276 | u32 mac_receive_error; | |
277 | u32 bad_crc_event; | |
278 | u32 collision; | |
279 | u32 late_collision; | |
280 | }; | |
281 | ||
8a578111 LB |
282 | struct rx_queue { |
283 | int rx_ring_size; | |
284 | ||
285 | int rx_desc_count; | |
286 | int rx_curr_desc; | |
287 | int rx_used_desc; | |
288 | ||
289 | struct rx_desc *rx_desc_area; | |
290 | dma_addr_t rx_desc_dma; | |
291 | int rx_desc_area_size; | |
292 | struct sk_buff **rx_skb; | |
293 | ||
294 | struct timer_list rx_oom; | |
295 | }; | |
296 | ||
13d64285 LB |
297 | struct tx_queue { |
298 | int tx_ring_size; | |
fbd6a754 | 299 | |
13d64285 LB |
300 | int tx_desc_count; |
301 | int tx_curr_desc; | |
302 | int tx_used_desc; | |
fbd6a754 | 303 | |
5daffe94 | 304 | struct tx_desc *tx_desc_area; |
fbd6a754 LB |
305 | dma_addr_t tx_desc_dma; |
306 | int tx_desc_area_size; | |
307 | struct sk_buff **tx_skb; | |
13d64285 LB |
308 | }; |
309 | ||
310 | struct mv643xx_eth_private { | |
311 | struct mv643xx_eth_shared_private *shared; | |
fc32b0e2 | 312 | int port_num; |
13d64285 | 313 | |
fc32b0e2 | 314 | struct net_device *dev; |
fbd6a754 | 315 | |
fc32b0e2 LB |
316 | struct mv643xx_eth_shared_private *shared_smi; |
317 | int phy_addr; | |
fbd6a754 | 318 | |
fbd6a754 | 319 | spinlock_t lock; |
fbd6a754 | 320 | |
fc32b0e2 LB |
321 | struct mib_counters mib_counters; |
322 | struct work_struct tx_timeout_task; | |
fbd6a754 | 323 | struct mii_if_info mii; |
8a578111 LB |
324 | |
325 | /* | |
326 | * RX state. | |
327 | */ | |
328 | int default_rx_ring_size; | |
329 | unsigned long rx_desc_sram_addr; | |
330 | int rx_desc_sram_size; | |
331 | struct napi_struct napi; | |
332 | struct rx_queue rxq[1]; | |
13d64285 LB |
333 | |
334 | /* | |
335 | * TX state. | |
336 | */ | |
337 | int default_tx_ring_size; | |
338 | unsigned long tx_desc_sram_addr; | |
339 | int tx_desc_sram_size; | |
340 | struct tx_queue txq[1]; | |
341 | #ifdef MV643XX_ETH_TX_FAST_REFILL | |
342 | int tx_clean_threshold; | |
343 | #endif | |
fbd6a754 | 344 | }; |
1da177e4 | 345 | |
fbd6a754 | 346 | |
c9df406f | 347 | /* port register accessors **************************************************/ |
e5371493 | 348 | static inline u32 rdl(struct mv643xx_eth_private *mp, int offset) |
c9df406f | 349 | { |
cc9754b3 | 350 | return readl(mp->shared->base + offset); |
c9df406f | 351 | } |
fbd6a754 | 352 | |
e5371493 | 353 | static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data) |
c9df406f | 354 | { |
cc9754b3 | 355 | writel(data, mp->shared->base + offset); |
c9df406f | 356 | } |
fbd6a754 | 357 | |
fbd6a754 | 358 | |
c9df406f | 359 | /* rxq/txq helper functions *************************************************/ |
8a578111 | 360 | static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq) |
c9df406f | 361 | { |
8a578111 | 362 | return container_of(rxq, struct mv643xx_eth_private, rxq[0]); |
c9df406f | 363 | } |
fbd6a754 | 364 | |
13d64285 LB |
365 | static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq) |
366 | { | |
367 | return container_of(txq, struct mv643xx_eth_private, txq[0]); | |
368 | } | |
369 | ||
8a578111 | 370 | static void rxq_enable(struct rx_queue *rxq) |
c9df406f | 371 | { |
8a578111 LB |
372 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
373 | wrl(mp, RXQ_COMMAND(mp->port_num), 1); | |
374 | } | |
1da177e4 | 375 | |
8a578111 LB |
376 | static void rxq_disable(struct rx_queue *rxq) |
377 | { | |
378 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); | |
379 | u8 mask = 1; | |
1da177e4 | 380 | |
8a578111 LB |
381 | wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8); |
382 | while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask) | |
383 | udelay(10); | |
c9df406f LB |
384 | } |
385 | ||
13d64285 | 386 | static void txq_enable(struct tx_queue *txq) |
1da177e4 | 387 | { |
13d64285 LB |
388 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
389 | wrl(mp, TXQ_COMMAND(mp->port_num), 1); | |
1da177e4 LT |
390 | } |
391 | ||
13d64285 | 392 | static void txq_disable(struct tx_queue *txq) |
1da177e4 | 393 | { |
13d64285 LB |
394 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
395 | u8 mask = 1; | |
c9df406f | 396 | |
13d64285 LB |
397 | wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8); |
398 | while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask) | |
399 | udelay(10); | |
400 | } | |
401 | ||
402 | static void __txq_maybe_wake(struct tx_queue *txq) | |
403 | { | |
404 | struct mv643xx_eth_private *mp = txq_to_mp(txq); | |
405 | ||
406 | if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB) | |
407 | netif_wake_queue(mp->dev); | |
1da177e4 LT |
408 | } |
409 | ||
c9df406f LB |
410 | |
411 | /* rx ***********************************************************************/ | |
13d64285 | 412 | static void txq_reclaim(struct tx_queue *txq, int force); |
c9df406f | 413 | |
8a578111 | 414 | static void rxq_refill(struct rx_queue *rxq) |
1da177e4 | 415 | { |
8a578111 | 416 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
c9df406f | 417 | unsigned long flags; |
1da177e4 | 418 | |
c9df406f | 419 | spin_lock_irqsave(&mp->lock, flags); |
c0d0f2ca | 420 | |
8a578111 LB |
421 | while (rxq->rx_desc_count < rxq->rx_ring_size) { |
422 | int skb_size; | |
de34f225 LB |
423 | struct sk_buff *skb; |
424 | int unaligned; | |
425 | int rx; | |
426 | ||
8a578111 LB |
427 | /* |
428 | * Reserve 2+14 bytes for an ethernet header (the | |
429 | * hardware automatically prepends 2 bytes of dummy | |
430 | * data to each received packet), 4 bytes for a VLAN | |
431 | * header, and 4 bytes for the trailing FCS -- 24 | |
432 | * bytes total. | |
433 | */ | |
434 | skb_size = mp->dev->mtu + 24; | |
435 | ||
436 | skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1); | |
de34f225 | 437 | if (skb == NULL) |
1da177e4 | 438 | break; |
de34f225 | 439 | |
908b637f | 440 | unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); |
b44cd572 | 441 | if (unaligned) |
908b637f | 442 | skb_reserve(skb, dma_get_cache_alignment() - unaligned); |
de34f225 | 443 | |
8a578111 LB |
444 | rxq->rx_desc_count++; |
445 | rx = rxq->rx_used_desc; | |
446 | rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size; | |
de34f225 | 447 | |
8a578111 LB |
448 | rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data, |
449 | skb_size, DMA_FROM_DEVICE); | |
450 | rxq->rx_desc_area[rx].buf_size = skb_size; | |
451 | rxq->rx_skb[rx] = skb; | |
de34f225 | 452 | wmb(); |
8a578111 | 453 | rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA | |
de34f225 LB |
454 | RX_ENABLE_INTERRUPT; |
455 | wmb(); | |
456 | ||
fc32b0e2 LB |
457 | /* |
458 | * The hardware automatically prepends 2 bytes of | |
459 | * dummy data to each received packet, so that the | |
460 | * IP header ends up 16-byte aligned. | |
461 | */ | |
462 | skb_reserve(skb, 2); | |
1da177e4 | 463 | } |
de34f225 | 464 | |
8a578111 LB |
465 | if (rxq->rx_desc_count == 0) { |
466 | rxq->rx_oom.expires = jiffies + (HZ / 10); | |
467 | add_timer(&rxq->rx_oom); | |
1da177e4 | 468 | } |
de34f225 LB |
469 | |
470 | spin_unlock_irqrestore(&mp->lock, flags); | |
1da177e4 LT |
471 | } |
472 | ||
8a578111 | 473 | static inline void rxq_refill_timer_wrapper(unsigned long data) |
1da177e4 | 474 | { |
8a578111 | 475 | rxq_refill((struct rx_queue *)data); |
1da177e4 LT |
476 | } |
477 | ||
8a578111 | 478 | static int rxq_process(struct rx_queue *rxq, int budget) |
1da177e4 | 479 | { |
8a578111 LB |
480 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
481 | struct net_device_stats *stats = &mp->dev->stats; | |
482 | int rx; | |
1da177e4 | 483 | |
8a578111 LB |
484 | rx = 0; |
485 | while (rx < budget) { | |
fc32b0e2 | 486 | struct rx_desc *rx_desc; |
96587661 | 487 | unsigned int cmd_sts; |
fc32b0e2 | 488 | struct sk_buff *skb; |
96587661 | 489 | unsigned long flags; |
d344bff9 | 490 | |
96587661 | 491 | spin_lock_irqsave(&mp->lock, flags); |
ff561eef | 492 | |
8a578111 | 493 | rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc]; |
1da177e4 | 494 | |
96587661 LB |
495 | cmd_sts = rx_desc->cmd_sts; |
496 | if (cmd_sts & BUFFER_OWNED_BY_DMA) { | |
497 | spin_unlock_irqrestore(&mp->lock, flags); | |
498 | break; | |
499 | } | |
500 | rmb(); | |
1da177e4 | 501 | |
8a578111 LB |
502 | skb = rxq->rx_skb[rxq->rx_curr_desc]; |
503 | rxq->rx_skb[rxq->rx_curr_desc] = NULL; | |
ff561eef | 504 | |
8a578111 | 505 | rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size; |
ff561eef | 506 | |
96587661 | 507 | spin_unlock_irqrestore(&mp->lock, flags); |
1da177e4 | 508 | |
fc32b0e2 LB |
509 | dma_unmap_single(NULL, rx_desc->buf_ptr + 2, |
510 | mp->dev->mtu + 24, DMA_FROM_DEVICE); | |
8a578111 LB |
511 | rxq->rx_desc_count--; |
512 | rx++; | |
b1dd9ca1 | 513 | |
468d09f8 DF |
514 | /* |
515 | * Update statistics. | |
fc32b0e2 LB |
516 | * |
517 | * Note that the descriptor byte count includes 2 dummy | |
518 | * bytes automatically inserted by the hardware at the | |
519 | * start of the packet (which we don't count), and a 4 | |
520 | * byte CRC at the end of the packet (which we do count). | |
468d09f8 | 521 | */ |
1da177e4 | 522 | stats->rx_packets++; |
fc32b0e2 | 523 | stats->rx_bytes += rx_desc->byte_cnt - 2; |
96587661 | 524 | |
1da177e4 | 525 | /* |
fc32b0e2 LB |
526 | * In case we received a packet without first / last bits |
527 | * on, or the error summary bit is set, the packet needs | |
528 | * to be dropped. | |
1da177e4 | 529 | */ |
96587661 | 530 | if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != |
cc9754b3 | 531 | (RX_FIRST_DESC | RX_LAST_DESC)) |
96587661 | 532 | || (cmd_sts & ERROR_SUMMARY)) { |
1da177e4 | 533 | stats->rx_dropped++; |
fc32b0e2 | 534 | |
96587661 | 535 | if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != |
cc9754b3 | 536 | (RX_FIRST_DESC | RX_LAST_DESC)) { |
1da177e4 | 537 | if (net_ratelimit()) |
fc32b0e2 LB |
538 | dev_printk(KERN_ERR, &mp->dev->dev, |
539 | "received packet spanning " | |
540 | "multiple descriptors\n"); | |
1da177e4 | 541 | } |
fc32b0e2 | 542 | |
96587661 | 543 | if (cmd_sts & ERROR_SUMMARY) |
1da177e4 LT |
544 | stats->rx_errors++; |
545 | ||
546 | dev_kfree_skb_irq(skb); | |
547 | } else { | |
548 | /* | |
549 | * The -4 is for the CRC in the trailer of the | |
550 | * received packet | |
551 | */ | |
fc32b0e2 | 552 | skb_put(skb, rx_desc->byte_cnt - 2 - 4); |
1da177e4 | 553 | |
96587661 | 554 | if (cmd_sts & LAYER_4_CHECKSUM_OK) { |
1da177e4 LT |
555 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
556 | skb->csum = htons( | |
96587661 | 557 | (cmd_sts & 0x0007fff8) >> 3); |
1da177e4 | 558 | } |
8a578111 | 559 | skb->protocol = eth_type_trans(skb, mp->dev); |
e5371493 | 560 | #ifdef MV643XX_ETH_NAPI |
1da177e4 LT |
561 | netif_receive_skb(skb); |
562 | #else | |
563 | netif_rx(skb); | |
564 | #endif | |
565 | } | |
fc32b0e2 | 566 | |
8a578111 | 567 | mp->dev->last_rx = jiffies; |
1da177e4 | 568 | } |
fc32b0e2 | 569 | |
8a578111 | 570 | rxq_refill(rxq); |
1da177e4 | 571 | |
8a578111 | 572 | return rx; |
1da177e4 LT |
573 | } |
574 | ||
e5371493 | 575 | #ifdef MV643XX_ETH_NAPI |
e5371493 | 576 | static int mv643xx_eth_poll(struct napi_struct *napi, int budget) |
d0412d96 | 577 | { |
8a578111 LB |
578 | struct mv643xx_eth_private *mp; |
579 | int rx; | |
580 | ||
581 | mp = container_of(napi, struct mv643xx_eth_private, napi); | |
d0412d96 | 582 | |
e5371493 | 583 | #ifdef MV643XX_ETH_TX_FAST_REFILL |
c9df406f | 584 | if (++mp->tx_clean_threshold > 5) { |
13d64285 | 585 | txq_reclaim(mp->txq, 0); |
c9df406f | 586 | mp->tx_clean_threshold = 0; |
d0412d96 | 587 | } |
c9df406f | 588 | #endif |
d0412d96 | 589 | |
8a578111 | 590 | rx = rxq_process(mp->rxq, budget); |
d0412d96 | 591 | |
8a578111 LB |
592 | if (rx < budget) { |
593 | netif_rx_complete(mp->dev, napi); | |
594 | wrl(mp, INT_CAUSE(mp->port_num), 0); | |
595 | wrl(mp, INT_CAUSE_EXT(mp->port_num), 0); | |
596 | wrl(mp, INT_MASK(mp->port_num), INT_RX | INT_EXT); | |
d0412d96 | 597 | } |
c9df406f | 598 | |
8a578111 | 599 | return rx; |
d0412d96 | 600 | } |
c9df406f | 601 | #endif |
d0412d96 | 602 | |
c9df406f LB |
603 | |
604 | /* tx ***********************************************************************/ | |
c9df406f | 605 | static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) |
1da177e4 | 606 | { |
13d64285 | 607 | int frag; |
1da177e4 | 608 | |
c9df406f | 609 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { |
13d64285 LB |
610 | skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag]; |
611 | if (fragp->size <= 8 && fragp->page_offset & 7) | |
c9df406f | 612 | return 1; |
1da177e4 | 613 | } |
13d64285 | 614 | |
c9df406f LB |
615 | return 0; |
616 | } | |
7303fde8 | 617 | |
13d64285 | 618 | static int txq_alloc_desc_index(struct tx_queue *txq) |
c9df406f LB |
619 | { |
620 | int tx_desc_curr; | |
d0412d96 | 621 | |
13d64285 | 622 | BUG_ON(txq->tx_desc_count >= txq->tx_ring_size); |
1da177e4 | 623 | |
13d64285 LB |
624 | tx_desc_curr = txq->tx_curr_desc; |
625 | txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size; | |
e4d00fa9 | 626 | |
13d64285 | 627 | BUG_ON(txq->tx_curr_desc == txq->tx_used_desc); |
468d09f8 | 628 | |
c9df406f LB |
629 | return tx_desc_curr; |
630 | } | |
468d09f8 | 631 | |
13d64285 | 632 | static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) |
c9df406f | 633 | { |
13d64285 | 634 | int nr_frags = skb_shinfo(skb)->nr_frags; |
c9df406f | 635 | int frag; |
1da177e4 | 636 | |
13d64285 LB |
637 | for (frag = 0; frag < nr_frags; frag++) { |
638 | skb_frag_t *this_frag; | |
639 | int tx_index; | |
640 | struct tx_desc *desc; | |
641 | ||
642 | this_frag = &skb_shinfo(skb)->frags[frag]; | |
643 | tx_index = txq_alloc_desc_index(txq); | |
644 | desc = &txq->tx_desc_area[tx_index]; | |
645 | ||
646 | /* | |
647 | * The last fragment will generate an interrupt | |
648 | * which will free the skb on TX completion. | |
649 | */ | |
650 | if (frag == nr_frags - 1) { | |
651 | desc->cmd_sts = BUFFER_OWNED_BY_DMA | | |
652 | ZERO_PADDING | TX_LAST_DESC | | |
653 | TX_ENABLE_INTERRUPT; | |
654 | txq->tx_skb[tx_index] = skb; | |
655 | } else { | |
656 | desc->cmd_sts = BUFFER_OWNED_BY_DMA; | |
657 | txq->tx_skb[tx_index] = NULL; | |
658 | } | |
659 | ||
c9df406f LB |
660 | desc->l4i_chk = 0; |
661 | desc->byte_cnt = this_frag->size; | |
662 | desc->buf_ptr = dma_map_page(NULL, this_frag->page, | |
663 | this_frag->page_offset, | |
664 | this_frag->size, | |
665 | DMA_TO_DEVICE); | |
666 | } | |
1da177e4 LT |
667 | } |
668 | ||
c9df406f LB |
669 | static inline __be16 sum16_as_be(__sum16 sum) |
670 | { | |
671 | return (__force __be16)sum; | |
672 | } | |
1da177e4 | 673 | |
13d64285 | 674 | static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb) |
1da177e4 | 675 | { |
13d64285 | 676 | int nr_frags = skb_shinfo(skb)->nr_frags; |
c9df406f | 677 | int tx_index; |
cc9754b3 | 678 | struct tx_desc *desc; |
c9df406f LB |
679 | u32 cmd_sts; |
680 | int length; | |
1da177e4 | 681 | |
cc9754b3 | 682 | cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA; |
1da177e4 | 683 | |
13d64285 LB |
684 | tx_index = txq_alloc_desc_index(txq); |
685 | desc = &txq->tx_desc_area[tx_index]; | |
c9df406f LB |
686 | |
687 | if (nr_frags) { | |
13d64285 | 688 | txq_submit_frag_skb(txq, skb); |
c9df406f LB |
689 | |
690 | length = skb_headlen(skb); | |
13d64285 | 691 | txq->tx_skb[tx_index] = NULL; |
c9df406f | 692 | } else { |
cc9754b3 | 693 | cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT; |
c9df406f | 694 | length = skb->len; |
13d64285 | 695 | txq->tx_skb[tx_index] = skb; |
c9df406f LB |
696 | } |
697 | ||
698 | desc->byte_cnt = length; | |
699 | desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE); | |
700 | ||
701 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
702 | BUG_ON(skb->protocol != htons(ETH_P_IP)); | |
703 | ||
cc9754b3 LB |
704 | cmd_sts |= GEN_TCP_UDP_CHECKSUM | |
705 | GEN_IP_V4_CHECKSUM | | |
706 | ip_hdr(skb)->ihl << TX_IHL_SHIFT; | |
c9df406f LB |
707 | |
708 | switch (ip_hdr(skb)->protocol) { | |
709 | case IPPROTO_UDP: | |
cc9754b3 | 710 | cmd_sts |= UDP_FRAME; |
c9df406f LB |
711 | desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); |
712 | break; | |
713 | case IPPROTO_TCP: | |
714 | desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); | |
715 | break; | |
716 | default: | |
717 | BUG(); | |
718 | } | |
719 | } else { | |
720 | /* Errata BTS #50, IHL must be 5 if no HW checksum */ | |
cc9754b3 | 721 | cmd_sts |= 5 << TX_IHL_SHIFT; |
c9df406f LB |
722 | desc->l4i_chk = 0; |
723 | } | |
724 | ||
725 | /* ensure all other descriptors are written before first cmd_sts */ | |
726 | wmb(); | |
727 | desc->cmd_sts = cmd_sts; | |
728 | ||
729 | /* ensure all descriptors are written before poking hardware */ | |
730 | wmb(); | |
13d64285 | 731 | txq_enable(txq); |
c9df406f | 732 | |
13d64285 | 733 | txq->tx_desc_count += nr_frags + 1; |
1da177e4 | 734 | } |
1da177e4 | 735 | |
fc32b0e2 | 736 | static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 | 737 | { |
e5371493 | 738 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 739 | struct net_device_stats *stats = &dev->stats; |
13d64285 | 740 | struct tx_queue *txq; |
c9df406f | 741 | unsigned long flags; |
afdb57a2 | 742 | |
c9df406f | 743 | BUG_ON(netif_queue_stopped(dev)); |
afdb57a2 | 744 | |
c9df406f LB |
745 | if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { |
746 | stats->tx_dropped++; | |
fc32b0e2 LB |
747 | dev_printk(KERN_DEBUG, &dev->dev, |
748 | "failed to linearize skb with tiny " | |
749 | "unaligned fragment\n"); | |
c9df406f LB |
750 | return NETDEV_TX_BUSY; |
751 | } | |
752 | ||
753 | spin_lock_irqsave(&mp->lock, flags); | |
754 | ||
13d64285 LB |
755 | txq = mp->txq; |
756 | ||
757 | if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) { | |
c9df406f LB |
758 | printk(KERN_ERR "%s: transmit with queue full\n", dev->name); |
759 | netif_stop_queue(dev); | |
760 | spin_unlock_irqrestore(&mp->lock, flags); | |
761 | return NETDEV_TX_BUSY; | |
762 | } | |
763 | ||
13d64285 | 764 | txq_submit_skb(txq, skb); |
c9df406f LB |
765 | stats->tx_bytes += skb->len; |
766 | stats->tx_packets++; | |
767 | dev->trans_start = jiffies; | |
768 | ||
13d64285 | 769 | if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) |
c9df406f LB |
770 | netif_stop_queue(dev); |
771 | ||
772 | spin_unlock_irqrestore(&mp->lock, flags); | |
773 | ||
774 | return NETDEV_TX_OK; | |
1da177e4 LT |
775 | } |
776 | ||
c9df406f LB |
777 | |
778 | /* mii management interface *************************************************/ | |
fc32b0e2 LB |
779 | #define SMI_BUSY 0x10000000 |
780 | #define SMI_READ_VALID 0x08000000 | |
781 | #define SMI_OPCODE_READ 0x04000000 | |
782 | #define SMI_OPCODE_WRITE 0x00000000 | |
c9df406f | 783 | |
fc32b0e2 LB |
784 | static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr, |
785 | unsigned int reg, unsigned int *value) | |
1da177e4 | 786 | { |
cc9754b3 | 787 | void __iomem *smi_reg = mp->shared_smi->base + SMI_REG; |
c9df406f | 788 | unsigned long flags; |
1da177e4 LT |
789 | int i; |
790 | ||
c9df406f LB |
791 | /* the SMI register is a shared resource */ |
792 | spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); | |
793 | ||
794 | /* wait for the SMI register to become available */ | |
cc9754b3 | 795 | for (i = 0; readl(smi_reg) & SMI_BUSY; i++) { |
e1bea50a | 796 | if (i == 1000) { |
c9df406f LB |
797 | printk("%s: PHY busy timeout\n", mp->dev->name); |
798 | goto out; | |
799 | } | |
e1bea50a | 800 | udelay(10); |
1da177e4 LT |
801 | } |
802 | ||
fc32b0e2 | 803 | writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg); |
1da177e4 | 804 | |
c9df406f | 805 | /* now wait for the data to be valid */ |
cc9754b3 | 806 | for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) { |
e1bea50a | 807 | if (i == 1000) { |
c9df406f LB |
808 | printk("%s: PHY read timeout\n", mp->dev->name); |
809 | goto out; | |
810 | } | |
e1bea50a | 811 | udelay(10); |
c9df406f LB |
812 | } |
813 | ||
814 | *value = readl(smi_reg) & 0xffff; | |
815 | out: | |
816 | spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); | |
1da177e4 LT |
817 | } |
818 | ||
fc32b0e2 LB |
819 | static void smi_reg_write(struct mv643xx_eth_private *mp, |
820 | unsigned int addr, | |
821 | unsigned int reg, unsigned int value) | |
1da177e4 | 822 | { |
cc9754b3 | 823 | void __iomem *smi_reg = mp->shared_smi->base + SMI_REG; |
c9df406f | 824 | unsigned long flags; |
1da177e4 LT |
825 | int i; |
826 | ||
c9df406f LB |
827 | /* the SMI register is a shared resource */ |
828 | spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); | |
829 | ||
830 | /* wait for the SMI register to become available */ | |
cc9754b3 | 831 | for (i = 0; readl(smi_reg) & SMI_BUSY; i++) { |
e1bea50a | 832 | if (i == 1000) { |
c9df406f LB |
833 | printk("%s: PHY busy timeout\n", mp->dev->name); |
834 | goto out; | |
835 | } | |
e1bea50a | 836 | udelay(10); |
1da177e4 LT |
837 | } |
838 | ||
fc32b0e2 LB |
839 | writel(SMI_OPCODE_WRITE | (reg << 21) | |
840 | (addr << 16) | (value & 0xffff), smi_reg); | |
c9df406f LB |
841 | out: |
842 | spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); | |
843 | } | |
1da177e4 | 844 | |
c9df406f LB |
845 | |
846 | /* mib counters *************************************************************/ | |
fc32b0e2 | 847 | static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset) |
c9df406f | 848 | { |
fc32b0e2 | 849 | return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); |
1da177e4 LT |
850 | } |
851 | ||
fc32b0e2 | 852 | static void mib_counters_clear(struct mv643xx_eth_private *mp) |
d0412d96 | 853 | { |
fc32b0e2 LB |
854 | int i; |
855 | ||
856 | for (i = 0; i < 0x80; i += 4) | |
857 | mib_read(mp, i); | |
c9df406f | 858 | } |
d0412d96 | 859 | |
fc32b0e2 | 860 | static void mib_counters_update(struct mv643xx_eth_private *mp) |
c9df406f | 861 | { |
e5371493 | 862 | struct mib_counters *p = &mp->mib_counters; |
4b8e3655 | 863 | |
fc32b0e2 LB |
864 | p->good_octets_received += mib_read(mp, 0x00); |
865 | p->good_octets_received += (u64)mib_read(mp, 0x04) << 32; | |
866 | p->bad_octets_received += mib_read(mp, 0x08); | |
867 | p->internal_mac_transmit_err += mib_read(mp, 0x0c); | |
868 | p->good_frames_received += mib_read(mp, 0x10); | |
869 | p->bad_frames_received += mib_read(mp, 0x14); | |
870 | p->broadcast_frames_received += mib_read(mp, 0x18); | |
871 | p->multicast_frames_received += mib_read(mp, 0x1c); | |
872 | p->frames_64_octets += mib_read(mp, 0x20); | |
873 | p->frames_65_to_127_octets += mib_read(mp, 0x24); | |
874 | p->frames_128_to_255_octets += mib_read(mp, 0x28); | |
875 | p->frames_256_to_511_octets += mib_read(mp, 0x2c); | |
876 | p->frames_512_to_1023_octets += mib_read(mp, 0x30); | |
877 | p->frames_1024_to_max_octets += mib_read(mp, 0x34); | |
878 | p->good_octets_sent += mib_read(mp, 0x38); | |
879 | p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32; | |
880 | p->good_frames_sent += mib_read(mp, 0x40); | |
881 | p->excessive_collision += mib_read(mp, 0x44); | |
882 | p->multicast_frames_sent += mib_read(mp, 0x48); | |
883 | p->broadcast_frames_sent += mib_read(mp, 0x4c); | |
884 | p->unrec_mac_control_received += mib_read(mp, 0x50); | |
885 | p->fc_sent += mib_read(mp, 0x54); | |
886 | p->good_fc_received += mib_read(mp, 0x58); | |
887 | p->bad_fc_received += mib_read(mp, 0x5c); | |
888 | p->undersize_received += mib_read(mp, 0x60); | |
889 | p->fragments_received += mib_read(mp, 0x64); | |
890 | p->oversize_received += mib_read(mp, 0x68); | |
891 | p->jabber_received += mib_read(mp, 0x6c); | |
892 | p->mac_receive_error += mib_read(mp, 0x70); | |
893 | p->bad_crc_event += mib_read(mp, 0x74); | |
894 | p->collision += mib_read(mp, 0x78); | |
895 | p->late_collision += mib_read(mp, 0x7c); | |
d0412d96 JC |
896 | } |
897 | ||
c9df406f LB |
898 | |
899 | /* ethtool ******************************************************************/ | |
e5371493 | 900 | struct mv643xx_eth_stats { |
c9df406f LB |
901 | char stat_string[ETH_GSTRING_LEN]; |
902 | int sizeof_stat; | |
16820054 LB |
903 | int netdev_off; |
904 | int mp_off; | |
c9df406f LB |
905 | }; |
906 | ||
16820054 LB |
907 | #define SSTAT(m) \ |
908 | { #m, FIELD_SIZEOF(struct net_device_stats, m), \ | |
909 | offsetof(struct net_device, stats.m), -1 } | |
910 | ||
911 | #define MIBSTAT(m) \ | |
912 | { #m, FIELD_SIZEOF(struct mib_counters, m), \ | |
913 | -1, offsetof(struct mv643xx_eth_private, mib_counters.m) } | |
914 | ||
915 | static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { | |
916 | SSTAT(rx_packets), | |
917 | SSTAT(tx_packets), | |
918 | SSTAT(rx_bytes), | |
919 | SSTAT(tx_bytes), | |
920 | SSTAT(rx_errors), | |
921 | SSTAT(tx_errors), | |
922 | SSTAT(rx_dropped), | |
923 | SSTAT(tx_dropped), | |
924 | MIBSTAT(good_octets_received), | |
925 | MIBSTAT(bad_octets_received), | |
926 | MIBSTAT(internal_mac_transmit_err), | |
927 | MIBSTAT(good_frames_received), | |
928 | MIBSTAT(bad_frames_received), | |
929 | MIBSTAT(broadcast_frames_received), | |
930 | MIBSTAT(multicast_frames_received), | |
931 | MIBSTAT(frames_64_octets), | |
932 | MIBSTAT(frames_65_to_127_octets), | |
933 | MIBSTAT(frames_128_to_255_octets), | |
934 | MIBSTAT(frames_256_to_511_octets), | |
935 | MIBSTAT(frames_512_to_1023_octets), | |
936 | MIBSTAT(frames_1024_to_max_octets), | |
937 | MIBSTAT(good_octets_sent), | |
938 | MIBSTAT(good_frames_sent), | |
939 | MIBSTAT(excessive_collision), | |
940 | MIBSTAT(multicast_frames_sent), | |
941 | MIBSTAT(broadcast_frames_sent), | |
942 | MIBSTAT(unrec_mac_control_received), | |
943 | MIBSTAT(fc_sent), | |
944 | MIBSTAT(good_fc_received), | |
945 | MIBSTAT(bad_fc_received), | |
946 | MIBSTAT(undersize_received), | |
947 | MIBSTAT(fragments_received), | |
948 | MIBSTAT(oversize_received), | |
949 | MIBSTAT(jabber_received), | |
950 | MIBSTAT(mac_receive_error), | |
951 | MIBSTAT(bad_crc_event), | |
952 | MIBSTAT(collision), | |
953 | MIBSTAT(late_collision), | |
c9df406f LB |
954 | }; |
955 | ||
e5371493 | 956 | static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
d0412d96 | 957 | { |
e5371493 | 958 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
d0412d96 JC |
959 | int err; |
960 | ||
961 | spin_lock_irq(&mp->lock); | |
962 | err = mii_ethtool_gset(&mp->mii, cmd); | |
963 | spin_unlock_irq(&mp->lock); | |
964 | ||
fc32b0e2 LB |
965 | /* |
966 | * The MAC does not support 1000baseT_Half. | |
967 | */ | |
d0412d96 JC |
968 | cmd->supported &= ~SUPPORTED_1000baseT_Half; |
969 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; | |
970 | ||
971 | return err; | |
972 | } | |
973 | ||
e5371493 | 974 | static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
1da177e4 | 975 | { |
e5371493 | 976 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
ab4384a6 DF |
977 | int err; |
978 | ||
fc32b0e2 LB |
979 | /* |
980 | * The MAC does not support 1000baseT_Half. | |
981 | */ | |
982 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; | |
983 | ||
c9df406f LB |
984 | spin_lock_irq(&mp->lock); |
985 | err = mii_ethtool_sset(&mp->mii, cmd); | |
986 | spin_unlock_irq(&mp->lock); | |
85cf572c | 987 | |
c9df406f LB |
988 | return err; |
989 | } | |
1da177e4 | 990 | |
fc32b0e2 LB |
991 | static void mv643xx_eth_get_drvinfo(struct net_device *dev, |
992 | struct ethtool_drvinfo *drvinfo) | |
c9df406f | 993 | { |
e5371493 LB |
994 | strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32); |
995 | strncpy(drvinfo->version, mv643xx_eth_driver_version, 32); | |
c9df406f | 996 | strncpy(drvinfo->fw_version, "N/A", 32); |
fc32b0e2 | 997 | strncpy(drvinfo->bus_info, "platform", 32); |
16820054 | 998 | drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats); |
c9df406f | 999 | } |
1da177e4 | 1000 | |
fc32b0e2 | 1001 | static int mv643xx_eth_nway_reset(struct net_device *dev) |
c9df406f | 1002 | { |
e5371493 | 1003 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1004 | |
c9df406f LB |
1005 | return mii_nway_restart(&mp->mii); |
1006 | } | |
1da177e4 | 1007 | |
c9df406f LB |
1008 | static u32 mv643xx_eth_get_link(struct net_device *dev) |
1009 | { | |
e5371493 | 1010 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1011 | |
c9df406f LB |
1012 | return mii_link_ok(&mp->mii); |
1013 | } | |
1da177e4 | 1014 | |
fc32b0e2 LB |
1015 | static void mv643xx_eth_get_strings(struct net_device *dev, |
1016 | uint32_t stringset, uint8_t *data) | |
c9df406f LB |
1017 | { |
1018 | int i; | |
1da177e4 | 1019 | |
fc32b0e2 LB |
1020 | if (stringset == ETH_SS_STATS) { |
1021 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { | |
c9df406f | 1022 | memcpy(data + i * ETH_GSTRING_LEN, |
16820054 | 1023 | mv643xx_eth_stats[i].stat_string, |
e5371493 | 1024 | ETH_GSTRING_LEN); |
c9df406f | 1025 | } |
c9df406f LB |
1026 | } |
1027 | } | |
1da177e4 | 1028 | |
fc32b0e2 LB |
1029 | static void mv643xx_eth_get_ethtool_stats(struct net_device *dev, |
1030 | struct ethtool_stats *stats, | |
1031 | uint64_t *data) | |
c9df406f | 1032 | { |
fc32b0e2 | 1033 | struct mv643xx_eth_private *mp = dev->priv; |
c9df406f | 1034 | int i; |
1da177e4 | 1035 | |
fc32b0e2 | 1036 | mib_counters_update(mp); |
1da177e4 | 1037 | |
16820054 LB |
1038 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { |
1039 | const struct mv643xx_eth_stats *stat; | |
1040 | void *p; | |
1041 | ||
1042 | stat = mv643xx_eth_stats + i; | |
1043 | ||
1044 | if (stat->netdev_off >= 0) | |
1045 | p = ((void *)mp->dev) + stat->netdev_off; | |
1046 | else | |
1047 | p = ((void *)mp) + stat->mp_off; | |
1048 | ||
1049 | data[i] = (stat->sizeof_stat == 8) ? | |
1050 | *(uint64_t *)p : *(uint32_t *)p; | |
1da177e4 | 1051 | } |
c9df406f | 1052 | } |
1da177e4 | 1053 | |
fc32b0e2 | 1054 | static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset) |
c9df406f | 1055 | { |
fc32b0e2 | 1056 | if (sset == ETH_SS_STATS) |
16820054 | 1057 | return ARRAY_SIZE(mv643xx_eth_stats); |
fc32b0e2 LB |
1058 | |
1059 | return -EOPNOTSUPP; | |
c9df406f | 1060 | } |
1da177e4 | 1061 | |
e5371493 | 1062 | static const struct ethtool_ops mv643xx_eth_ethtool_ops = { |
fc32b0e2 LB |
1063 | .get_settings = mv643xx_eth_get_settings, |
1064 | .set_settings = mv643xx_eth_set_settings, | |
1065 | .get_drvinfo = mv643xx_eth_get_drvinfo, | |
1066 | .nway_reset = mv643xx_eth_nway_reset, | |
1067 | .get_link = mv643xx_eth_get_link, | |
c9df406f | 1068 | .set_sg = ethtool_op_set_sg, |
fc32b0e2 LB |
1069 | .get_strings = mv643xx_eth_get_strings, |
1070 | .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, | |
e5371493 | 1071 | .get_sset_count = mv643xx_eth_get_sset_count, |
c9df406f | 1072 | }; |
1da177e4 | 1073 | |
bea3348e | 1074 | |
c9df406f | 1075 | /* address handling *********************************************************/ |
5daffe94 | 1076 | static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr) |
c9df406f | 1077 | { |
c9df406f LB |
1078 | unsigned int mac_h; |
1079 | unsigned int mac_l; | |
1da177e4 | 1080 | |
fc32b0e2 LB |
1081 | mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num)); |
1082 | mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num)); | |
1da177e4 | 1083 | |
5daffe94 LB |
1084 | addr[0] = (mac_h >> 24) & 0xff; |
1085 | addr[1] = (mac_h >> 16) & 0xff; | |
1086 | addr[2] = (mac_h >> 8) & 0xff; | |
1087 | addr[3] = mac_h & 0xff; | |
1088 | addr[4] = (mac_l >> 8) & 0xff; | |
1089 | addr[5] = mac_l & 0xff; | |
c9df406f | 1090 | } |
1da177e4 | 1091 | |
e5371493 | 1092 | static void init_mac_tables(struct mv643xx_eth_private *mp) |
c9df406f | 1093 | { |
fc32b0e2 | 1094 | int i; |
1da177e4 | 1095 | |
fc32b0e2 LB |
1096 | for (i = 0; i < 0x100; i += 4) { |
1097 | wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); | |
1098 | wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); | |
c9df406f | 1099 | } |
fc32b0e2 LB |
1100 | |
1101 | for (i = 0; i < 0x10; i += 4) | |
1102 | wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0); | |
c9df406f | 1103 | } |
d0412d96 | 1104 | |
e5371493 | 1105 | static void set_filter_table_entry(struct mv643xx_eth_private *mp, |
fc32b0e2 | 1106 | int table, unsigned char entry) |
c9df406f LB |
1107 | { |
1108 | unsigned int table_reg; | |
ab4384a6 | 1109 | |
c9df406f | 1110 | /* Set "accepts frame bit" at specified table entry */ |
fc32b0e2 LB |
1111 | table_reg = rdl(mp, table + (entry & 0xfc)); |
1112 | table_reg |= 0x01 << (8 * (entry & 3)); | |
1113 | wrl(mp, table + (entry & 0xfc), table_reg); | |
1da177e4 LT |
1114 | } |
1115 | ||
5daffe94 | 1116 | static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr) |
1da177e4 | 1117 | { |
c9df406f LB |
1118 | unsigned int mac_h; |
1119 | unsigned int mac_l; | |
1120 | int table; | |
1da177e4 | 1121 | |
fc32b0e2 LB |
1122 | mac_l = (addr[4] << 8) | addr[5]; |
1123 | mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; | |
ff561eef | 1124 | |
fc32b0e2 LB |
1125 | wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l); |
1126 | wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h); | |
1da177e4 | 1127 | |
fc32b0e2 | 1128 | table = UNICAST_TABLE(mp->port_num); |
5daffe94 | 1129 | set_filter_table_entry(mp, table, addr[5] & 0x0f); |
1da177e4 LT |
1130 | } |
1131 | ||
fc32b0e2 | 1132 | static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) |
1da177e4 | 1133 | { |
e5371493 | 1134 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1135 | |
fc32b0e2 LB |
1136 | /* +2 is for the offset of the HW addr type */ |
1137 | memcpy(dev->dev_addr, addr + 2, 6); | |
1138 | ||
cc9754b3 LB |
1139 | init_mac_tables(mp); |
1140 | uc_addr_set(mp, dev->dev_addr); | |
1da177e4 LT |
1141 | |
1142 | return 0; | |
1143 | } | |
1144 | ||
69876569 LB |
1145 | static int addr_crc(unsigned char *addr) |
1146 | { | |
1147 | int crc = 0; | |
1148 | int i; | |
1149 | ||
1150 | for (i = 0; i < 6; i++) { | |
1151 | int j; | |
1152 | ||
1153 | crc = (crc ^ addr[i]) << 8; | |
1154 | for (j = 7; j >= 0; j--) { | |
1155 | if (crc & (0x100 << j)) | |
1156 | crc ^= 0x107 << j; | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | return crc; | |
1161 | } | |
1162 | ||
fc32b0e2 | 1163 | static void mv643xx_eth_set_rx_mode(struct net_device *dev) |
1da177e4 | 1164 | { |
fc32b0e2 LB |
1165 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1166 | u32 port_config; | |
1167 | struct dev_addr_list *addr; | |
1168 | int i; | |
c8aaea25 | 1169 | |
fc32b0e2 LB |
1170 | port_config = rdl(mp, PORT_CONFIG(mp->port_num)); |
1171 | if (dev->flags & IFF_PROMISC) | |
1172 | port_config |= UNICAST_PROMISCUOUS_MODE; | |
1173 | else | |
1174 | port_config &= ~UNICAST_PROMISCUOUS_MODE; | |
1175 | wrl(mp, PORT_CONFIG(mp->port_num), port_config); | |
1da177e4 | 1176 | |
fc32b0e2 LB |
1177 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
1178 | int port_num = mp->port_num; | |
1179 | u32 accept = 0x01010101; | |
c8aaea25 | 1180 | |
fc32b0e2 LB |
1181 | for (i = 0; i < 0x100; i += 4) { |
1182 | wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept); | |
1183 | wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept); | |
c9df406f LB |
1184 | } |
1185 | return; | |
1186 | } | |
c8aaea25 | 1187 | |
fc32b0e2 LB |
1188 | for (i = 0; i < 0x100; i += 4) { |
1189 | wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); | |
1190 | wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); | |
1da177e4 LT |
1191 | } |
1192 | ||
fc32b0e2 LB |
1193 | for (addr = dev->mc_list; addr != NULL; addr = addr->next) { |
1194 | u8 *a = addr->da_addr; | |
1195 | int table; | |
324ff2c1 | 1196 | |
fc32b0e2 LB |
1197 | if (addr->da_addrlen != 6) |
1198 | continue; | |
1da177e4 | 1199 | |
fc32b0e2 LB |
1200 | if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) { |
1201 | table = SPECIAL_MCAST_TABLE(mp->port_num); | |
1202 | set_filter_table_entry(mp, table, a[5]); | |
1203 | } else { | |
1204 | int crc = addr_crc(a); | |
1da177e4 | 1205 | |
fc32b0e2 LB |
1206 | table = OTHER_MCAST_TABLE(mp->port_num); |
1207 | set_filter_table_entry(mp, table, crc); | |
1208 | } | |
1209 | } | |
c9df406f | 1210 | } |
c8aaea25 | 1211 | |
c8aaea25 | 1212 | |
c9df406f | 1213 | /* rx/tx queue initialisation ***********************************************/ |
8a578111 | 1214 | static int rxq_init(struct mv643xx_eth_private *mp) |
c9df406f | 1215 | { |
8a578111 LB |
1216 | struct rx_queue *rxq = mp->rxq; |
1217 | struct rx_desc *rx_desc; | |
1218 | int size; | |
c9df406f LB |
1219 | int i; |
1220 | ||
8a578111 LB |
1221 | rxq->rx_ring_size = mp->default_rx_ring_size; |
1222 | ||
1223 | rxq->rx_desc_count = 0; | |
1224 | rxq->rx_curr_desc = 0; | |
1225 | rxq->rx_used_desc = 0; | |
1226 | ||
1227 | size = rxq->rx_ring_size * sizeof(struct rx_desc); | |
1228 | ||
1229 | if (size <= mp->rx_desc_sram_size) { | |
1230 | rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr, | |
1231 | mp->rx_desc_sram_size); | |
1232 | rxq->rx_desc_dma = mp->rx_desc_sram_addr; | |
1233 | } else { | |
1234 | rxq->rx_desc_area = dma_alloc_coherent(NULL, size, | |
1235 | &rxq->rx_desc_dma, | |
1236 | GFP_KERNEL); | |
f7ea3337 PJ |
1237 | } |
1238 | ||
8a578111 LB |
1239 | if (rxq->rx_desc_area == NULL) { |
1240 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1241 | "can't allocate rx ring (%d bytes)\n", size); | |
1242 | goto out; | |
1243 | } | |
1244 | memset(rxq->rx_desc_area, 0, size); | |
1da177e4 | 1245 | |
8a578111 LB |
1246 | rxq->rx_desc_area_size = size; |
1247 | rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb), | |
1248 | GFP_KERNEL); | |
1249 | if (rxq->rx_skb == NULL) { | |
1250 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1251 | "can't allocate rx skb ring\n"); | |
1252 | goto out_free; | |
1253 | } | |
1254 | ||
1255 | rx_desc = (struct rx_desc *)rxq->rx_desc_area; | |
1256 | for (i = 0; i < rxq->rx_ring_size; i++) { | |
1257 | int nexti = (i + 1) % rxq->rx_ring_size; | |
1258 | rx_desc[i].next_desc_ptr = rxq->rx_desc_dma + | |
1259 | nexti * sizeof(struct rx_desc); | |
1260 | } | |
1261 | ||
1262 | init_timer(&rxq->rx_oom); | |
1263 | rxq->rx_oom.data = (unsigned long)rxq; | |
1264 | rxq->rx_oom.function = rxq_refill_timer_wrapper; | |
1265 | ||
1266 | return 0; | |
1267 | ||
1268 | ||
1269 | out_free: | |
1270 | if (size <= mp->rx_desc_sram_size) | |
1271 | iounmap(rxq->rx_desc_area); | |
1272 | else | |
1273 | dma_free_coherent(NULL, size, | |
1274 | rxq->rx_desc_area, | |
1275 | rxq->rx_desc_dma); | |
1276 | ||
1277 | out: | |
1278 | return -ENOMEM; | |
c9df406f | 1279 | } |
c8aaea25 | 1280 | |
8a578111 | 1281 | static void rxq_deinit(struct rx_queue *rxq) |
c9df406f | 1282 | { |
8a578111 LB |
1283 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
1284 | int i; | |
1285 | ||
1286 | rxq_disable(rxq); | |
c8aaea25 | 1287 | |
8a578111 | 1288 | del_timer_sync(&rxq->rx_oom); |
c9df406f | 1289 | |
8a578111 LB |
1290 | for (i = 0; i < rxq->rx_ring_size; i++) { |
1291 | if (rxq->rx_skb[i]) { | |
1292 | dev_kfree_skb(rxq->rx_skb[i]); | |
1293 | rxq->rx_desc_count--; | |
1da177e4 | 1294 | } |
c8aaea25 | 1295 | } |
1da177e4 | 1296 | |
8a578111 LB |
1297 | if (rxq->rx_desc_count) { |
1298 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1299 | "error freeing rx ring -- %d skbs stuck\n", | |
1300 | rxq->rx_desc_count); | |
1301 | } | |
1302 | ||
1303 | if (rxq->rx_desc_area_size <= mp->rx_desc_sram_size) | |
1304 | iounmap(rxq->rx_desc_area); | |
c9df406f | 1305 | else |
8a578111 LB |
1306 | dma_free_coherent(NULL, rxq->rx_desc_area_size, |
1307 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
1308 | ||
1309 | kfree(rxq->rx_skb); | |
c9df406f | 1310 | } |
1da177e4 | 1311 | |
13d64285 | 1312 | static int txq_init(struct mv643xx_eth_private *mp) |
c9df406f | 1313 | { |
13d64285 LB |
1314 | struct tx_queue *txq = mp->txq; |
1315 | struct tx_desc *tx_desc; | |
1316 | int size; | |
c9df406f | 1317 | int i; |
1da177e4 | 1318 | |
13d64285 LB |
1319 | txq->tx_ring_size = mp->default_tx_ring_size; |
1320 | ||
1321 | txq->tx_desc_count = 0; | |
1322 | txq->tx_curr_desc = 0; | |
1323 | txq->tx_used_desc = 0; | |
1324 | ||
1325 | size = txq->tx_ring_size * sizeof(struct tx_desc); | |
1326 | ||
1327 | if (size <= mp->tx_desc_sram_size) { | |
1328 | txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr, | |
1329 | mp->tx_desc_sram_size); | |
1330 | txq->tx_desc_dma = mp->tx_desc_sram_addr; | |
1331 | } else { | |
1332 | txq->tx_desc_area = dma_alloc_coherent(NULL, size, | |
1333 | &txq->tx_desc_dma, | |
1334 | GFP_KERNEL); | |
1335 | } | |
1336 | ||
1337 | if (txq->tx_desc_area == NULL) { | |
1338 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1339 | "can't allocate tx ring (%d bytes)\n", size); | |
1340 | goto out; | |
c9df406f | 1341 | } |
13d64285 LB |
1342 | memset(txq->tx_desc_area, 0, size); |
1343 | ||
1344 | txq->tx_desc_area_size = size; | |
1345 | txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb), | |
1346 | GFP_KERNEL); | |
1347 | if (txq->tx_skb == NULL) { | |
1348 | dev_printk(KERN_ERR, &mp->dev->dev, | |
1349 | "can't allocate tx skb ring\n"); | |
1350 | goto out_free; | |
1351 | } | |
1352 | ||
1353 | tx_desc = (struct tx_desc *)txq->tx_desc_area; | |
1354 | for (i = 0; i < txq->tx_ring_size; i++) { | |
1355 | int nexti = (i + 1) % txq->tx_ring_size; | |
1356 | tx_desc[i].next_desc_ptr = txq->tx_desc_dma + | |
1357 | nexti * sizeof(struct tx_desc); | |
1358 | } | |
1359 | ||
1360 | return 0; | |
1361 | ||
c9df406f | 1362 | |
13d64285 LB |
1363 | out_free: |
1364 | if (size <= mp->tx_desc_sram_size) | |
1365 | iounmap(txq->tx_desc_area); | |
1366 | else | |
1367 | dma_free_coherent(NULL, size, | |
1368 | txq->tx_desc_area, | |
1369 | txq->tx_desc_dma); | |
c9df406f | 1370 | |
13d64285 LB |
1371 | out: |
1372 | return -ENOMEM; | |
c8aaea25 | 1373 | } |
1da177e4 | 1374 | |
13d64285 | 1375 | static void txq_reclaim(struct tx_queue *txq, int force) |
c8aaea25 | 1376 | { |
13d64285 | 1377 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
c8aaea25 | 1378 | unsigned long flags; |
1da177e4 | 1379 | |
13d64285 LB |
1380 | spin_lock_irqsave(&mp->lock, flags); |
1381 | while (txq->tx_desc_count > 0) { | |
1382 | int tx_index; | |
1383 | struct tx_desc *desc; | |
1384 | u32 cmd_sts; | |
1385 | struct sk_buff *skb; | |
1386 | dma_addr_t addr; | |
1387 | int count; | |
4d64e718 | 1388 | |
13d64285 LB |
1389 | tx_index = txq->tx_used_desc; |
1390 | desc = &txq->tx_desc_area[tx_index]; | |
c9df406f | 1391 | cmd_sts = desc->cmd_sts; |
4d64e718 | 1392 | |
13d64285 LB |
1393 | if (!force && (cmd_sts & BUFFER_OWNED_BY_DMA)) |
1394 | break; | |
1da177e4 | 1395 | |
13d64285 LB |
1396 | txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size; |
1397 | txq->tx_desc_count--; | |
1da177e4 | 1398 | |
c9df406f LB |
1399 | addr = desc->buf_ptr; |
1400 | count = desc->byte_cnt; | |
13d64285 LB |
1401 | skb = txq->tx_skb[tx_index]; |
1402 | txq->tx_skb[tx_index] = NULL; | |
c8aaea25 | 1403 | |
cc9754b3 | 1404 | if (cmd_sts & ERROR_SUMMARY) { |
13d64285 LB |
1405 | dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n"); |
1406 | mp->dev->stats.tx_errors++; | |
c9df406f | 1407 | } |
1da177e4 | 1408 | |
13d64285 LB |
1409 | /* |
1410 | * Drop mp->lock while we free the skb. | |
1411 | */ | |
c9df406f | 1412 | spin_unlock_irqrestore(&mp->lock, flags); |
1da177e4 | 1413 | |
cc9754b3 | 1414 | if (cmd_sts & TX_FIRST_DESC) |
c9df406f LB |
1415 | dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE); |
1416 | else | |
1417 | dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE); | |
c2e5b352 | 1418 | |
c9df406f LB |
1419 | if (skb) |
1420 | dev_kfree_skb_irq(skb); | |
63c9e549 | 1421 | |
13d64285 | 1422 | spin_lock_irqsave(&mp->lock, flags); |
c9df406f | 1423 | } |
13d64285 | 1424 | spin_unlock_irqrestore(&mp->lock, flags); |
c9df406f | 1425 | } |
1da177e4 | 1426 | |
13d64285 | 1427 | static void txq_deinit(struct tx_queue *txq) |
c9df406f | 1428 | { |
13d64285 | 1429 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
fa3959f4 | 1430 | |
13d64285 LB |
1431 | txq_disable(txq); |
1432 | txq_reclaim(txq, 1); | |
1da177e4 | 1433 | |
13d64285 | 1434 | BUG_ON(txq->tx_used_desc != txq->tx_curr_desc); |
1da177e4 | 1435 | |
13d64285 LB |
1436 | if (txq->tx_desc_area_size <= mp->tx_desc_sram_size) |
1437 | iounmap(txq->tx_desc_area); | |
c9df406f | 1438 | else |
13d64285 LB |
1439 | dma_free_coherent(NULL, txq->tx_desc_area_size, |
1440 | txq->tx_desc_area, txq->tx_desc_dma); | |
1441 | ||
1442 | kfree(txq->tx_skb); | |
c9df406f | 1443 | } |
1da177e4 | 1444 | |
1da177e4 | 1445 | |
c9df406f | 1446 | /* netdev ops and related ***************************************************/ |
fc32b0e2 | 1447 | static void update_pscr(struct mv643xx_eth_private *mp, int speed, int duplex) |
c9df406f | 1448 | { |
13d64285 LB |
1449 | u32 pscr_o; |
1450 | u32 pscr_n; | |
1da177e4 | 1451 | |
13d64285 | 1452 | pscr_o = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); |
63c9e549 | 1453 | |
c9df406f | 1454 | /* clear speed, duplex and rx buffer size fields */ |
13d64285 LB |
1455 | pscr_n = pscr_o & ~(SET_MII_SPEED_TO_100 | |
1456 | SET_GMII_SPEED_TO_1000 | | |
1457 | SET_FULL_DUPLEX_MODE | | |
1458 | MAX_RX_PACKET_MASK); | |
1da177e4 | 1459 | |
fc32b0e2 | 1460 | if (speed == SPEED_1000) { |
13d64285 LB |
1461 | pscr_n |= SET_GMII_SPEED_TO_1000 | MAX_RX_PACKET_9700BYTE; |
1462 | } else { | |
fc32b0e2 | 1463 | if (speed == SPEED_100) |
13d64285 LB |
1464 | pscr_n |= SET_MII_SPEED_TO_100; |
1465 | pscr_n |= MAX_RX_PACKET_1522BYTE; | |
c9df406f | 1466 | } |
1da177e4 | 1467 | |
fc32b0e2 | 1468 | if (duplex == DUPLEX_FULL) |
13d64285 LB |
1469 | pscr_n |= SET_FULL_DUPLEX_MODE; |
1470 | ||
1471 | if (pscr_n != pscr_o) { | |
1472 | if ((pscr_o & SERIAL_PORT_ENABLE) == 0) | |
1473 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); | |
c9df406f | 1474 | else { |
13d64285 LB |
1475 | txq_disable(mp->txq); |
1476 | pscr_o &= ~SERIAL_PORT_ENABLE; | |
1477 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_o); | |
1478 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); | |
1479 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); | |
1480 | txq_enable(mp->txq); | |
c9df406f LB |
1481 | } |
1482 | } | |
1483 | } | |
84dd619e | 1484 | |
fc32b0e2 | 1485 | static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id) |
c9df406f LB |
1486 | { |
1487 | struct net_device *dev = (struct net_device *)dev_id; | |
e5371493 | 1488 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
fc32b0e2 LB |
1489 | u32 int_cause; |
1490 | u32 int_cause_ext; | |
ce4e2e45 | 1491 | |
13d64285 | 1492 | int_cause = rdl(mp, INT_CAUSE(mp->port_num)) & (INT_RX | INT_EXT); |
fc32b0e2 LB |
1493 | if (int_cause == 0) |
1494 | return IRQ_NONE; | |
1495 | ||
1496 | int_cause_ext = 0; | |
cc9754b3 | 1497 | if (int_cause & INT_EXT) { |
13d64285 | 1498 | int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num)) |
073a345c | 1499 | & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX); |
13d64285 | 1500 | wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext); |
c9df406f | 1501 | } |
1da177e4 | 1502 | |
fc32b0e2 | 1503 | if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK)) { |
c9df406f | 1504 | if (mii_link_ok(&mp->mii)) { |
13d64285 LB |
1505 | struct ethtool_cmd cmd; |
1506 | ||
c9df406f | 1507 | mii_ethtool_gset(&mp->mii, &cmd); |
fc32b0e2 | 1508 | update_pscr(mp, cmd.speed, cmd.duplex); |
13d64285 | 1509 | txq_enable(mp->txq); |
c9df406f LB |
1510 | if (!netif_carrier_ok(dev)) { |
1511 | netif_carrier_on(dev); | |
13d64285 | 1512 | __txq_maybe_wake(mp->txq); |
c9df406f LB |
1513 | } |
1514 | } else if (netif_carrier_ok(dev)) { | |
1515 | netif_stop_queue(dev); | |
1516 | netif_carrier_off(dev); | |
1517 | } | |
1518 | } | |
1da177e4 | 1519 | |
e5371493 | 1520 | #ifdef MV643XX_ETH_NAPI |
cc9754b3 | 1521 | if (int_cause & INT_RX) { |
13d64285 | 1522 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
13d64285 | 1523 | rdl(mp, INT_MASK(mp->port_num)); |
1da177e4 | 1524 | |
c9df406f | 1525 | netif_rx_schedule(dev, &mp->napi); |
84dd619e | 1526 | } |
c9df406f | 1527 | #else |
cc9754b3 | 1528 | if (int_cause & INT_RX) |
8a578111 | 1529 | rxq_process(mp->rxq, INT_MAX); |
c9df406f | 1530 | #endif |
fc32b0e2 | 1531 | |
13d64285 LB |
1532 | if (int_cause_ext & INT_EXT_TX) { |
1533 | txq_reclaim(mp->txq, 0); | |
1534 | __txq_maybe_wake(mp->txq); | |
1535 | } | |
1da177e4 | 1536 | |
c9df406f | 1537 | return IRQ_HANDLED; |
1da177e4 LT |
1538 | } |
1539 | ||
e5371493 | 1540 | static void phy_reset(struct mv643xx_eth_private *mp) |
1da177e4 | 1541 | { |
fc32b0e2 | 1542 | unsigned int data; |
1da177e4 | 1543 | |
fc32b0e2 LB |
1544 | smi_reg_read(mp, mp->phy_addr, 0, &data); |
1545 | data |= 0x8000; | |
1546 | smi_reg_write(mp, mp->phy_addr, 0, data); | |
1da177e4 | 1547 | |
c9df406f LB |
1548 | do { |
1549 | udelay(1); | |
fc32b0e2 LB |
1550 | smi_reg_read(mp, mp->phy_addr, 0, &data); |
1551 | } while (data & 0x8000); | |
1da177e4 LT |
1552 | } |
1553 | ||
fc32b0e2 | 1554 | static void port_start(struct mv643xx_eth_private *mp) |
1da177e4 | 1555 | { |
d0412d96 JC |
1556 | u32 pscr; |
1557 | struct ethtool_cmd ethtool_cmd; | |
8a578111 | 1558 | int i; |
1da177e4 | 1559 | |
8a578111 LB |
1560 | /* |
1561 | * Configure basic link parameters. | |
1562 | */ | |
1563 | pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); | |
1564 | pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS); | |
1565 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); | |
1566 | pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL | | |
1567 | DISABLE_AUTO_NEG_SPEED_GMII | | |
1568 | DISABLE_AUTO_NEG_FOR_DUPLEX | | |
1569 | DO_NOT_FORCE_LINK_FAIL | | |
1570 | SERIAL_PORT_CONTROL_RESERVED; | |
1571 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); | |
1572 | pscr |= SERIAL_PORT_ENABLE; | |
1573 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); | |
1da177e4 | 1574 | |
8a578111 LB |
1575 | wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE); |
1576 | ||
fc32b0e2 | 1577 | mv643xx_eth_get_settings(mp->dev, ðtool_cmd); |
8a578111 | 1578 | phy_reset(mp); |
fc32b0e2 | 1579 | mv643xx_eth_set_settings(mp->dev, ðtool_cmd); |
1da177e4 | 1580 | |
13d64285 LB |
1581 | /* |
1582 | * Configure TX path and queues. | |
1583 | */ | |
1584 | wrl(mp, TX_BW_MTU(mp->port_num), 0); | |
1585 | for (i = 0; i < 1; i++) { | |
1586 | struct tx_queue *txq = mp->txq; | |
1587 | int off = TXQ_CURRENT_DESC_PTR(mp->port_num); | |
1588 | u32 addr; | |
1589 | ||
1590 | addr = (u32)txq->tx_desc_dma; | |
1591 | addr += txq->tx_curr_desc * sizeof(struct tx_desc); | |
1592 | wrl(mp, off, addr); | |
1593 | } | |
1594 | ||
fc32b0e2 LB |
1595 | /* |
1596 | * Add configured unicast address to address filter table. | |
1597 | */ | |
1598 | uc_addr_set(mp, mp->dev->dev_addr); | |
1da177e4 | 1599 | |
d9a073ea LB |
1600 | /* |
1601 | * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast | |
1602 | * frames to RX queue #0. | |
1603 | */ | |
8a578111 | 1604 | wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000); |
01999873 | 1605 | |
376489a2 LB |
1606 | /* |
1607 | * Treat BPDUs as normal multicasts, and disable partition mode. | |
1608 | */ | |
8a578111 | 1609 | wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000); |
01999873 | 1610 | |
8a578111 LB |
1611 | /* |
1612 | * Enable the receive queue. | |
1613 | */ | |
1614 | for (i = 0; i < 1; i++) { | |
1615 | struct rx_queue *rxq = mp->rxq; | |
1616 | int off = RXQ_CURRENT_DESC_PTR(mp->port_num); | |
1617 | u32 addr; | |
1da177e4 | 1618 | |
8a578111 LB |
1619 | addr = (u32)rxq->rx_desc_dma; |
1620 | addr += rxq->rx_curr_desc * sizeof(struct rx_desc); | |
1621 | wrl(mp, off, addr); | |
1da177e4 | 1622 | |
8a578111 LB |
1623 | rxq_enable(rxq); |
1624 | } | |
1da177e4 LT |
1625 | } |
1626 | ||
ffd86bbe | 1627 | static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay) |
1da177e4 | 1628 | { |
c9df406f | 1629 | unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; |
1da177e4 | 1630 | |
fc32b0e2 LB |
1631 | if (coal > 0x3fff) |
1632 | coal = 0x3fff; | |
1633 | ||
1634 | wrl(mp, SDMA_CONFIG(mp->port_num), | |
c9df406f | 1635 | ((coal & 0x3fff) << 8) | |
fc32b0e2 | 1636 | (rdl(mp, SDMA_CONFIG(mp->port_num)) |
c9df406f | 1637 | & 0xffc000ff)); |
1da177e4 LT |
1638 | } |
1639 | ||
ffd86bbe | 1640 | static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay) |
1da177e4 | 1641 | { |
c9df406f | 1642 | unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; |
1da177e4 | 1643 | |
fc32b0e2 LB |
1644 | if (coal > 0x3fff) |
1645 | coal = 0x3fff; | |
1646 | wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4); | |
16e03018 DF |
1647 | } |
1648 | ||
c9df406f | 1649 | static int mv643xx_eth_open(struct net_device *dev) |
16e03018 | 1650 | { |
e5371493 | 1651 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 1652 | int err; |
16e03018 | 1653 | |
fc32b0e2 LB |
1654 | wrl(mp, INT_CAUSE(mp->port_num), 0); |
1655 | wrl(mp, INT_CAUSE_EXT(mp->port_num), 0); | |
1656 | rdl(mp, INT_CAUSE_EXT(mp->port_num)); | |
c9df406f | 1657 | |
fc32b0e2 LB |
1658 | err = request_irq(dev->irq, mv643xx_eth_irq, |
1659 | IRQF_SHARED | IRQF_SAMPLE_RANDOM, | |
1660 | dev->name, dev); | |
c9df406f | 1661 | if (err) { |
fc32b0e2 | 1662 | dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n"); |
c9df406f | 1663 | return -EAGAIN; |
16e03018 DF |
1664 | } |
1665 | ||
fc32b0e2 | 1666 | init_mac_tables(mp); |
16e03018 | 1667 | |
8a578111 LB |
1668 | err = rxq_init(mp); |
1669 | if (err) | |
fc32b0e2 | 1670 | goto out; |
8a578111 LB |
1671 | rxq_refill(mp->rxq); |
1672 | ||
13d64285 LB |
1673 | err = txq_init(mp); |
1674 | if (err) | |
fc32b0e2 | 1675 | goto out_free; |
16e03018 | 1676 | |
e5371493 | 1677 | #ifdef MV643XX_ETH_NAPI |
c9df406f LB |
1678 | napi_enable(&mp->napi); |
1679 | #endif | |
16e03018 | 1680 | |
fc32b0e2 | 1681 | port_start(mp); |
16e03018 | 1682 | |
ffd86bbe LB |
1683 | set_rx_coal(mp, 0); |
1684 | set_tx_coal(mp, 0); | |
16e03018 | 1685 | |
fc32b0e2 LB |
1686 | wrl(mp, INT_MASK_EXT(mp->port_num), |
1687 | INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX); | |
16e03018 | 1688 | |
fc32b0e2 | 1689 | wrl(mp, INT_MASK(mp->port_num), INT_RX | INT_EXT); |
16e03018 | 1690 | |
c9df406f LB |
1691 | return 0; |
1692 | ||
13d64285 | 1693 | |
fc32b0e2 | 1694 | out_free: |
8a578111 | 1695 | rxq_deinit(mp->rxq); |
fc32b0e2 | 1696 | out: |
c9df406f LB |
1697 | free_irq(dev->irq, dev); |
1698 | ||
1699 | return err; | |
16e03018 DF |
1700 | } |
1701 | ||
e5371493 | 1702 | static void port_reset(struct mv643xx_eth_private *mp) |
1da177e4 | 1703 | { |
fc32b0e2 | 1704 | unsigned int data; |
1da177e4 | 1705 | |
13d64285 | 1706 | txq_disable(mp->txq); |
8a578111 | 1707 | rxq_disable(mp->rxq); |
13d64285 LB |
1708 | while (!(rdl(mp, PORT_STATUS(mp->port_num)) & TX_FIFO_EMPTY)) |
1709 | udelay(10); | |
1da177e4 | 1710 | |
c9df406f | 1711 | /* Reset the Enable bit in the Configuration Register */ |
fc32b0e2 LB |
1712 | data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); |
1713 | data &= ~(SERIAL_PORT_ENABLE | | |
1714 | DO_NOT_FORCE_LINK_FAIL | | |
1715 | FORCE_LINK_PASS); | |
1716 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data); | |
1da177e4 LT |
1717 | } |
1718 | ||
c9df406f | 1719 | static int mv643xx_eth_stop(struct net_device *dev) |
1da177e4 | 1720 | { |
e5371493 | 1721 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1722 | |
fc32b0e2 LB |
1723 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
1724 | rdl(mp, INT_MASK(mp->port_num)); | |
1da177e4 | 1725 | |
e5371493 | 1726 | #ifdef MV643XX_ETH_NAPI |
c9df406f LB |
1727 | napi_disable(&mp->napi); |
1728 | #endif | |
1729 | netif_carrier_off(dev); | |
1730 | netif_stop_queue(dev); | |
1da177e4 | 1731 | |
fc32b0e2 LB |
1732 | free_irq(dev->irq, dev); |
1733 | ||
cc9754b3 | 1734 | port_reset(mp); |
fc32b0e2 | 1735 | mib_counters_update(mp); |
1da177e4 | 1736 | |
13d64285 | 1737 | txq_deinit(mp->txq); |
8a578111 | 1738 | rxq_deinit(mp->rxq); |
1da177e4 | 1739 | |
c9df406f | 1740 | return 0; |
1da177e4 LT |
1741 | } |
1742 | ||
fc32b0e2 | 1743 | static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
1da177e4 | 1744 | { |
e5371493 | 1745 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1746 | |
c9df406f | 1747 | return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL); |
1da177e4 LT |
1748 | } |
1749 | ||
c9df406f | 1750 | static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 | 1751 | { |
fc32b0e2 | 1752 | if (new_mtu < 64 || new_mtu > 9500) |
c9df406f | 1753 | return -EINVAL; |
1da177e4 | 1754 | |
c9df406f LB |
1755 | dev->mtu = new_mtu; |
1756 | if (!netif_running(dev)) | |
1757 | return 0; | |
1da177e4 | 1758 | |
c9df406f LB |
1759 | /* |
1760 | * Stop and then re-open the interface. This will allocate RX | |
1761 | * skbs of the new MTU. | |
1762 | * There is a possible danger that the open will not succeed, | |
fc32b0e2 | 1763 | * due to memory being full. |
c9df406f LB |
1764 | */ |
1765 | mv643xx_eth_stop(dev); | |
1766 | if (mv643xx_eth_open(dev)) { | |
fc32b0e2 LB |
1767 | dev_printk(KERN_ERR, &dev->dev, |
1768 | "fatal error on re-opening device after " | |
1769 | "MTU change\n"); | |
c9df406f LB |
1770 | } |
1771 | ||
1772 | return 0; | |
1da177e4 LT |
1773 | } |
1774 | ||
fc32b0e2 | 1775 | static void tx_timeout_task(struct work_struct *ugly) |
1da177e4 | 1776 | { |
fc32b0e2 | 1777 | struct mv643xx_eth_private *mp; |
1da177e4 | 1778 | |
fc32b0e2 LB |
1779 | mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task); |
1780 | if (netif_running(mp->dev)) { | |
1781 | netif_stop_queue(mp->dev); | |
c9df406f | 1782 | |
fc32b0e2 LB |
1783 | port_reset(mp); |
1784 | port_start(mp); | |
c9df406f | 1785 | |
fc32b0e2 LB |
1786 | __txq_maybe_wake(mp->txq); |
1787 | } | |
c9df406f LB |
1788 | } |
1789 | ||
c9df406f | 1790 | static void mv643xx_eth_tx_timeout(struct net_device *dev) |
1da177e4 | 1791 | { |
e5371493 | 1792 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
1da177e4 | 1793 | |
fc32b0e2 | 1794 | dev_printk(KERN_INFO, &dev->dev, "tx timeout\n"); |
d0412d96 | 1795 | |
c9df406f | 1796 | schedule_work(&mp->tx_timeout_task); |
1da177e4 LT |
1797 | } |
1798 | ||
c9df406f | 1799 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fc32b0e2 | 1800 | static void mv643xx_eth_netpoll(struct net_device *dev) |
9f8dd319 | 1801 | { |
fc32b0e2 | 1802 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f | 1803 | |
fc32b0e2 LB |
1804 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
1805 | rdl(mp, INT_MASK(mp->port_num)); | |
c9df406f | 1806 | |
fc32b0e2 | 1807 | mv643xx_eth_irq(dev->irq, dev); |
c9df406f | 1808 | |
fc32b0e2 | 1809 | wrl(mp, INT_MASK(mp->port_num), INT_RX | INT_CAUSE_EXT); |
9f8dd319 | 1810 | } |
c9df406f | 1811 | #endif |
9f8dd319 | 1812 | |
fc32b0e2 | 1813 | static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg) |
9f8dd319 | 1814 | { |
e5371493 | 1815 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
c9df406f LB |
1816 | int val; |
1817 | ||
fc32b0e2 LB |
1818 | smi_reg_read(mp, addr, reg, &val); |
1819 | ||
c9df406f | 1820 | return val; |
9f8dd319 DF |
1821 | } |
1822 | ||
fc32b0e2 | 1823 | static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val) |
9f8dd319 | 1824 | { |
e5371493 | 1825 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
fc32b0e2 | 1826 | smi_reg_write(mp, addr, reg, val); |
c9df406f | 1827 | } |
9f8dd319 | 1828 | |
9f8dd319 | 1829 | |
c9df406f | 1830 | /* platform glue ************************************************************/ |
e5371493 LB |
1831 | static void |
1832 | mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp, | |
1833 | struct mbus_dram_target_info *dram) | |
c9df406f | 1834 | { |
cc9754b3 | 1835 | void __iomem *base = msp->base; |
c9df406f LB |
1836 | u32 win_enable; |
1837 | u32 win_protect; | |
1838 | int i; | |
9f8dd319 | 1839 | |
c9df406f LB |
1840 | for (i = 0; i < 6; i++) { |
1841 | writel(0, base + WINDOW_BASE(i)); | |
1842 | writel(0, base + WINDOW_SIZE(i)); | |
1843 | if (i < 4) | |
1844 | writel(0, base + WINDOW_REMAP_HIGH(i)); | |
9f8dd319 DF |
1845 | } |
1846 | ||
c9df406f LB |
1847 | win_enable = 0x3f; |
1848 | win_protect = 0; | |
1849 | ||
1850 | for (i = 0; i < dram->num_cs; i++) { | |
1851 | struct mbus_dram_window *cs = dram->cs + i; | |
1852 | ||
1853 | writel((cs->base & 0xffff0000) | | |
1854 | (cs->mbus_attr << 8) | | |
1855 | dram->mbus_dram_target_id, base + WINDOW_BASE(i)); | |
1856 | writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); | |
1857 | ||
1858 | win_enable &= ~(1 << i); | |
1859 | win_protect |= 3 << (2 * i); | |
1860 | } | |
1861 | ||
1862 | writel(win_enable, base + WINDOW_BAR_ENABLE); | |
1863 | msp->win_protect = win_protect; | |
9f8dd319 DF |
1864 | } |
1865 | ||
c9df406f | 1866 | static int mv643xx_eth_shared_probe(struct platform_device *pdev) |
9f8dd319 | 1867 | { |
e5371493 | 1868 | static int mv643xx_eth_version_printed = 0; |
c9df406f | 1869 | struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; |
e5371493 | 1870 | struct mv643xx_eth_shared_private *msp; |
c9df406f LB |
1871 | struct resource *res; |
1872 | int ret; | |
9f8dd319 | 1873 | |
e5371493 | 1874 | if (!mv643xx_eth_version_printed++) |
c9df406f | 1875 | printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n"); |
9f8dd319 | 1876 | |
c9df406f LB |
1877 | ret = -EINVAL; |
1878 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1879 | if (res == NULL) | |
1880 | goto out; | |
9f8dd319 | 1881 | |
c9df406f LB |
1882 | ret = -ENOMEM; |
1883 | msp = kmalloc(sizeof(*msp), GFP_KERNEL); | |
1884 | if (msp == NULL) | |
1885 | goto out; | |
1886 | memset(msp, 0, sizeof(*msp)); | |
1887 | ||
cc9754b3 LB |
1888 | msp->base = ioremap(res->start, res->end - res->start + 1); |
1889 | if (msp->base == NULL) | |
c9df406f LB |
1890 | goto out_free; |
1891 | ||
1892 | spin_lock_init(&msp->phy_lock); | |
c9df406f LB |
1893 | |
1894 | /* | |
1895 | * (Re-)program MBUS remapping windows if we are asked to. | |
1896 | */ | |
1897 | if (pd != NULL && pd->dram != NULL) | |
1898 | mv643xx_eth_conf_mbus_windows(msp, pd->dram); | |
1899 | ||
fc32b0e2 LB |
1900 | /* |
1901 | * Detect hardware parameters. | |
1902 | */ | |
1903 | msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; | |
1904 | ||
1905 | platform_set_drvdata(pdev, msp); | |
1906 | ||
c9df406f LB |
1907 | return 0; |
1908 | ||
1909 | out_free: | |
1910 | kfree(msp); | |
1911 | out: | |
1912 | return ret; | |
1913 | } | |
1914 | ||
1915 | static int mv643xx_eth_shared_remove(struct platform_device *pdev) | |
1916 | { | |
e5371493 | 1917 | struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev); |
c9df406f | 1918 | |
cc9754b3 | 1919 | iounmap(msp->base); |
c9df406f LB |
1920 | kfree(msp); |
1921 | ||
1922 | return 0; | |
9f8dd319 DF |
1923 | } |
1924 | ||
c9df406f | 1925 | static struct platform_driver mv643xx_eth_shared_driver = { |
fc32b0e2 LB |
1926 | .probe = mv643xx_eth_shared_probe, |
1927 | .remove = mv643xx_eth_shared_remove, | |
c9df406f | 1928 | .driver = { |
fc32b0e2 | 1929 | .name = MV643XX_ETH_SHARED_NAME, |
c9df406f LB |
1930 | .owner = THIS_MODULE, |
1931 | }, | |
1932 | }; | |
1933 | ||
e5371493 | 1934 | static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr) |
1da177e4 | 1935 | { |
c9df406f | 1936 | int addr_shift = 5 * mp->port_num; |
fc32b0e2 | 1937 | u32 data; |
1da177e4 | 1938 | |
fc32b0e2 LB |
1939 | data = rdl(mp, PHY_ADDR); |
1940 | data &= ~(0x1f << addr_shift); | |
1941 | data |= (phy_addr & 0x1f) << addr_shift; | |
1942 | wrl(mp, PHY_ADDR, data); | |
1da177e4 LT |
1943 | } |
1944 | ||
e5371493 | 1945 | static int phy_addr_get(struct mv643xx_eth_private *mp) |
1da177e4 | 1946 | { |
fc32b0e2 LB |
1947 | unsigned int data; |
1948 | ||
1949 | data = rdl(mp, PHY_ADDR); | |
1950 | ||
1951 | return (data >> (5 * mp->port_num)) & 0x1f; | |
1952 | } | |
1953 | ||
1954 | static void set_params(struct mv643xx_eth_private *mp, | |
1955 | struct mv643xx_eth_platform_data *pd) | |
1956 | { | |
1957 | struct net_device *dev = mp->dev; | |
1958 | ||
1959 | if (is_valid_ether_addr(pd->mac_addr)) | |
1960 | memcpy(dev->dev_addr, pd->mac_addr, 6); | |
1961 | else | |
1962 | uc_addr_get(mp, dev->dev_addr); | |
1963 | ||
1964 | if (pd->phy_addr == -1) { | |
1965 | mp->shared_smi = NULL; | |
1966 | mp->phy_addr = -1; | |
1967 | } else { | |
1968 | mp->shared_smi = mp->shared; | |
1969 | if (pd->shared_smi != NULL) | |
1970 | mp->shared_smi = platform_get_drvdata(pd->shared_smi); | |
1971 | ||
1972 | if (pd->force_phy_addr || pd->phy_addr) { | |
1973 | mp->phy_addr = pd->phy_addr & 0x3f; | |
1974 | phy_addr_set(mp, mp->phy_addr); | |
1975 | } else { | |
1976 | mp->phy_addr = phy_addr_get(mp); | |
1977 | } | |
1978 | } | |
1da177e4 | 1979 | |
fc32b0e2 LB |
1980 | mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE; |
1981 | if (pd->rx_queue_size) | |
1982 | mp->default_rx_ring_size = pd->rx_queue_size; | |
1983 | mp->rx_desc_sram_addr = pd->rx_sram_addr; | |
1984 | mp->rx_desc_sram_size = pd->rx_sram_size; | |
1da177e4 | 1985 | |
fc32b0e2 LB |
1986 | mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE; |
1987 | if (pd->tx_queue_size) | |
1988 | mp->default_tx_ring_size = pd->tx_queue_size; | |
1989 | mp->tx_desc_sram_addr = pd->tx_sram_addr; | |
1990 | mp->tx_desc_sram_size = pd->tx_sram_size; | |
1da177e4 LT |
1991 | } |
1992 | ||
e5371493 | 1993 | static int phy_detect(struct mv643xx_eth_private *mp) |
1da177e4 | 1994 | { |
fc32b0e2 LB |
1995 | unsigned int data; |
1996 | unsigned int data2; | |
1997 | ||
1998 | smi_reg_read(mp, mp->phy_addr, 0, &data); | |
1999 | smi_reg_write(mp, mp->phy_addr, 0, data ^ 0x1000); | |
1da177e4 | 2000 | |
fc32b0e2 LB |
2001 | smi_reg_read(mp, mp->phy_addr, 0, &data2); |
2002 | if (((data ^ data2) & 0x1000) == 0) | |
2003 | return -ENODEV; | |
1da177e4 | 2004 | |
fc32b0e2 | 2005 | smi_reg_write(mp, mp->phy_addr, 0, data); |
1da177e4 | 2006 | |
c9df406f | 2007 | return 0; |
1da177e4 LT |
2008 | } |
2009 | ||
fc32b0e2 LB |
2010 | static int phy_init(struct mv643xx_eth_private *mp, |
2011 | struct mv643xx_eth_platform_data *pd) | |
c28a4f89 | 2012 | { |
fc32b0e2 LB |
2013 | struct ethtool_cmd cmd; |
2014 | int err; | |
c28a4f89 | 2015 | |
fc32b0e2 LB |
2016 | err = phy_detect(mp); |
2017 | if (err) { | |
2018 | dev_printk(KERN_INFO, &mp->dev->dev, | |
2019 | "no PHY detected at addr %d\n", mp->phy_addr); | |
2020 | return err; | |
2021 | } | |
2022 | phy_reset(mp); | |
2023 | ||
2024 | mp->mii.phy_id = mp->phy_addr; | |
2025 | mp->mii.phy_id_mask = 0x3f; | |
2026 | mp->mii.reg_num_mask = 0x1f; | |
2027 | mp->mii.dev = mp->dev; | |
2028 | mp->mii.mdio_read = mv643xx_eth_mdio_read; | |
2029 | mp->mii.mdio_write = mv643xx_eth_mdio_write; | |
c28a4f89 | 2030 | |
fc32b0e2 | 2031 | mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii); |
c9df406f | 2032 | |
fc32b0e2 LB |
2033 | memset(&cmd, 0, sizeof(cmd)); |
2034 | ||
2035 | cmd.port = PORT_MII; | |
2036 | cmd.transceiver = XCVR_INTERNAL; | |
2037 | cmd.phy_address = mp->phy_addr; | |
2038 | if (pd->speed == 0) { | |
2039 | cmd.autoneg = AUTONEG_ENABLE; | |
2040 | cmd.speed = SPEED_100; | |
2041 | cmd.advertising = ADVERTISED_10baseT_Half | | |
2042 | ADVERTISED_10baseT_Full | | |
2043 | ADVERTISED_100baseT_Half | | |
2044 | ADVERTISED_100baseT_Full; | |
c9df406f | 2045 | if (mp->mii.supports_gmii) |
fc32b0e2 | 2046 | cmd.advertising |= ADVERTISED_1000baseT_Full; |
c9df406f | 2047 | } else { |
fc32b0e2 LB |
2048 | cmd.autoneg = AUTONEG_DISABLE; |
2049 | cmd.speed = pd->speed; | |
2050 | cmd.duplex = pd->duplex; | |
c9df406f | 2051 | } |
fc32b0e2 LB |
2052 | |
2053 | update_pscr(mp, cmd.speed, cmd.duplex); | |
2054 | mv643xx_eth_set_settings(mp->dev, &cmd); | |
2055 | ||
2056 | return 0; | |
c28a4f89 JC |
2057 | } |
2058 | ||
c9df406f | 2059 | static int mv643xx_eth_probe(struct platform_device *pdev) |
1da177e4 | 2060 | { |
c9df406f | 2061 | struct mv643xx_eth_platform_data *pd; |
e5371493 | 2062 | struct mv643xx_eth_private *mp; |
c9df406f | 2063 | struct net_device *dev; |
c9df406f | 2064 | struct resource *res; |
c9df406f | 2065 | DECLARE_MAC_BUF(mac); |
fc32b0e2 | 2066 | int err; |
1da177e4 | 2067 | |
c9df406f LB |
2068 | pd = pdev->dev.platform_data; |
2069 | if (pd == NULL) { | |
fc32b0e2 LB |
2070 | dev_printk(KERN_ERR, &pdev->dev, |
2071 | "no mv643xx_eth_platform_data\n"); | |
c9df406f LB |
2072 | return -ENODEV; |
2073 | } | |
1da177e4 | 2074 | |
c9df406f | 2075 | if (pd->shared == NULL) { |
fc32b0e2 LB |
2076 | dev_printk(KERN_ERR, &pdev->dev, |
2077 | "no mv643xx_eth_platform_data->shared\n"); | |
c9df406f LB |
2078 | return -ENODEV; |
2079 | } | |
8f518703 | 2080 | |
e5371493 | 2081 | dev = alloc_etherdev(sizeof(struct mv643xx_eth_private)); |
c9df406f LB |
2082 | if (!dev) |
2083 | return -ENOMEM; | |
1da177e4 | 2084 | |
c9df406f | 2085 | mp = netdev_priv(dev); |
fc32b0e2 LB |
2086 | platform_set_drvdata(pdev, mp); |
2087 | ||
2088 | mp->shared = platform_get_drvdata(pd->shared); | |
2089 | mp->port_num = pd->port_number; | |
2090 | ||
c9df406f | 2091 | mp->dev = dev; |
e5371493 LB |
2092 | #ifdef MV643XX_ETH_NAPI |
2093 | netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64); | |
c9df406f | 2094 | #endif |
1da177e4 | 2095 | |
fc32b0e2 LB |
2096 | set_params(mp, pd); |
2097 | ||
2098 | spin_lock_init(&mp->lock); | |
2099 | ||
2100 | mib_counters_clear(mp); | |
2101 | INIT_WORK(&mp->tx_timeout_task, tx_timeout_task); | |
2102 | ||
2103 | err = phy_init(mp, pd); | |
2104 | if (err) | |
2105 | goto out; | |
2106 | SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); | |
2107 | ||
2108 | ||
c9df406f LB |
2109 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
2110 | BUG_ON(!res); | |
2111 | dev->irq = res->start; | |
1da177e4 | 2112 | |
fc32b0e2 | 2113 | dev->hard_start_xmit = mv643xx_eth_xmit; |
c9df406f LB |
2114 | dev->open = mv643xx_eth_open; |
2115 | dev->stop = mv643xx_eth_stop; | |
c9df406f | 2116 | dev->set_multicast_list = mv643xx_eth_set_rx_mode; |
fc32b0e2 LB |
2117 | dev->set_mac_address = mv643xx_eth_set_mac_address; |
2118 | dev->do_ioctl = mv643xx_eth_ioctl; | |
2119 | dev->change_mtu = mv643xx_eth_change_mtu; | |
c9df406f | 2120 | dev->tx_timeout = mv643xx_eth_tx_timeout; |
c9df406f | 2121 | #ifdef CONFIG_NET_POLL_CONTROLLER |
e5371493 | 2122 | dev->poll_controller = mv643xx_eth_netpoll; |
c9df406f | 2123 | #endif |
c9df406f LB |
2124 | dev->watchdog_timeo = 2 * HZ; |
2125 | dev->base_addr = 0; | |
1da177e4 | 2126 | |
e5371493 | 2127 | #ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX |
b4de9051 | 2128 | /* |
c9df406f LB |
2129 | * Zero copy can only work if we use Discovery II memory. Else, we will |
2130 | * have to map the buffers to ISA memory which is only 16 MB | |
b4de9051 | 2131 | */ |
c9df406f | 2132 | dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; |
c9df406f | 2133 | #endif |
1da177e4 | 2134 | |
fc32b0e2 | 2135 | SET_NETDEV_DEV(dev, &pdev->dev); |
8f518703 | 2136 | |
c9df406f | 2137 | if (mp->shared->win_protect) |
fc32b0e2 | 2138 | wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect); |
1da177e4 | 2139 | |
c9df406f LB |
2140 | err = register_netdev(dev); |
2141 | if (err) | |
2142 | goto out; | |
1da177e4 | 2143 | |
fc32b0e2 LB |
2144 | dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n", |
2145 | mp->port_num, print_mac(mac, dev->dev_addr)); | |
1da177e4 | 2146 | |
c9df406f | 2147 | if (dev->features & NETIF_F_SG) |
fc32b0e2 | 2148 | dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n"); |
1da177e4 | 2149 | |
c9df406f | 2150 | if (dev->features & NETIF_F_IP_CSUM) |
fc32b0e2 | 2151 | dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n"); |
1da177e4 | 2152 | |
e5371493 | 2153 | #ifdef MV643XX_ETH_NAPI |
fc32b0e2 | 2154 | dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n"); |
c9df406f | 2155 | #endif |
1da177e4 | 2156 | |
13d64285 | 2157 | if (mp->tx_desc_sram_size > 0) |
fc32b0e2 | 2158 | dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n"); |
1da177e4 | 2159 | |
c9df406f | 2160 | return 0; |
1da177e4 | 2161 | |
c9df406f LB |
2162 | out: |
2163 | free_netdev(dev); | |
1da177e4 | 2164 | |
c9df406f | 2165 | return err; |
1da177e4 LT |
2166 | } |
2167 | ||
c9df406f | 2168 | static int mv643xx_eth_remove(struct platform_device *pdev) |
1da177e4 | 2169 | { |
fc32b0e2 | 2170 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); |
1da177e4 | 2171 | |
fc32b0e2 | 2172 | unregister_netdev(mp->dev); |
c9df406f | 2173 | flush_scheduled_work(); |
fc32b0e2 | 2174 | free_netdev(mp->dev); |
c9df406f | 2175 | |
c9df406f | 2176 | platform_set_drvdata(pdev, NULL); |
fc32b0e2 | 2177 | |
c9df406f | 2178 | return 0; |
1da177e4 LT |
2179 | } |
2180 | ||
c9df406f | 2181 | static void mv643xx_eth_shutdown(struct platform_device *pdev) |
d0412d96 | 2182 | { |
fc32b0e2 | 2183 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); |
d0412d96 | 2184 | |
c9df406f | 2185 | /* Mask all interrupts on ethernet port */ |
fc32b0e2 LB |
2186 | wrl(mp, INT_MASK(mp->port_num), 0); |
2187 | rdl(mp, INT_MASK(mp->port_num)); | |
c9df406f | 2188 | |
fc32b0e2 LB |
2189 | if (netif_running(mp->dev)) |
2190 | port_reset(mp); | |
d0412d96 JC |
2191 | } |
2192 | ||
c9df406f | 2193 | static struct platform_driver mv643xx_eth_driver = { |
fc32b0e2 LB |
2194 | .probe = mv643xx_eth_probe, |
2195 | .remove = mv643xx_eth_remove, | |
2196 | .shutdown = mv643xx_eth_shutdown, | |
c9df406f | 2197 | .driver = { |
fc32b0e2 | 2198 | .name = MV643XX_ETH_NAME, |
c9df406f LB |
2199 | .owner = THIS_MODULE, |
2200 | }, | |
2201 | }; | |
2202 | ||
e5371493 | 2203 | static int __init mv643xx_eth_init_module(void) |
d0412d96 | 2204 | { |
c9df406f | 2205 | int rc; |
d0412d96 | 2206 | |
c9df406f LB |
2207 | rc = platform_driver_register(&mv643xx_eth_shared_driver); |
2208 | if (!rc) { | |
2209 | rc = platform_driver_register(&mv643xx_eth_driver); | |
2210 | if (rc) | |
2211 | platform_driver_unregister(&mv643xx_eth_shared_driver); | |
2212 | } | |
fc32b0e2 | 2213 | |
c9df406f | 2214 | return rc; |
d0412d96 | 2215 | } |
fc32b0e2 | 2216 | module_init(mv643xx_eth_init_module); |
d0412d96 | 2217 | |
e5371493 | 2218 | static void __exit mv643xx_eth_cleanup_module(void) |
d0412d96 | 2219 | { |
c9df406f LB |
2220 | platform_driver_unregister(&mv643xx_eth_driver); |
2221 | platform_driver_unregister(&mv643xx_eth_shared_driver); | |
d0412d96 | 2222 | } |
e5371493 | 2223 | module_exit(mv643xx_eth_cleanup_module); |
1da177e4 | 2224 | |
fc32b0e2 LB |
2225 | MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani " |
2226 | "and Dale Farnsworth"); | |
c9df406f | 2227 | MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); |
fc32b0e2 | 2228 | MODULE_LICENSE("GPL"); |
c9df406f | 2229 | MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); |
fc32b0e2 | 2230 | MODULE_ALIAS("platform:" MV643XX_ETH_NAME); |