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mv643xx_eth: be more agressive about RX refill
[net-next-2.6.git] / drivers / net / mv643xx_eth.c
CommitLineData
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		 57static char mv643xx_eth_driver_name[] = "mv643xx_eth";
58static 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 93#define TXQ_COMMAND(p) (0x0448 + ((p) << 10))
89df5fdc
LB		 94#define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10))
95#define TX_BW_RATE(p) (0x0450 + ((p) << 10))
3cb4667c 96#define TX_BW_MTU(p) (0x0458 + ((p) << 10))
89df5fdc 97#define TX_BW_BURST(p) (0x045c + ((p) << 10))
3cb4667c 98#define INT_CAUSE(p) (0x0460 + ((p) << 10))
226bb6b7 99#define INT_TX_END 0x07f80000
64da80a2 100#define INT_RX 0x0007fbfc
073a345c 101#define INT_EXT 0x00000002
3cb4667c 102#define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10))
073a345c
LB		 103#define INT_EXT_LINK 0x00100000
104#define INT_EXT_PHY 0x00010000
105#define INT_EXT_TX_ERROR_0 0x00000100
106#define INT_EXT_TX_0 0x00000001
3d6b35bc 107#define INT_EXT_TX 0x0000ffff
3cb4667c
LB		 108#define INT_MASK(p) (0x0468 + ((p) << 10))
109#define INT_MASK_EXT(p) (0x046c + ((p) << 10))
110#define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10))
1e881592
LB		 111#define TXQ_FIX_PRIO_CONF_MOVED(p) (0x04dc + ((p) << 10))
112#define TX_BW_RATE_MOVED(p) (0x04e0 + ((p) << 10))
113#define TX_BW_MTU_MOVED(p) (0x04e8 + ((p) << 10))
114#define TX_BW_BURST_MOVED(p) (0x04ec + ((p) << 10))
64da80a2 115#define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4))
3cb4667c 116#define RXQ_COMMAND(p) (0x0680 + ((p) << 10))
3d6b35bc
LB		 117#define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2))
118#define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4))
119#define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4))
120#define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4))
3cb4667c
LB		 121#define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
122#define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
123#define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
124#define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
fbd6a754 125
2679a550
LB		 126
127/*
128 * SDMA configuration register.
129 */
fbd6a754 130#define RX_BURST_SIZE_4_64BIT (2 << 1)
fbd6a754 131#define BLM_RX_NO_SWAP (1 << 4)
fbd6a754 132#define BLM_TX_NO_SWAP (1 << 5)
fbd6a754 133#define TX_BURST_SIZE_4_64BIT (2 << 22)
fbd6a754
LB		 134
135#if defined(__BIG_ENDIAN)
136#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
137 RX_BURST_SIZE_4_64BIT | \
fbd6a754
LB		 138 TX_BURST_SIZE_4_64BIT
139#elif defined(__LITTLE_ENDIAN)
140#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
141 RX_BURST_SIZE_4_64BIT | \
142 BLM_RX_NO_SWAP | \
143 BLM_TX_NO_SWAP | \
fbd6a754
LB		 144 TX_BURST_SIZE_4_64BIT
145#else
146#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
147#endif
148
2beff77b
LB		 149
150/*
151 * Port serial control register.
152 */
153#define SET_MII_SPEED_TO_100 (1 << 24)
154#define SET_GMII_SPEED_TO_1000 (1 << 23)
155#define SET_FULL_DUPLEX_MODE (1 << 21)
fbd6a754 156#define MAX_RX_PACKET_1522BYTE (1 << 17)
fbd6a754
LB		 157#define MAX_RX_PACKET_9700BYTE (5 << 17)
158#define MAX_RX_PACKET_MASK (7 << 17)
2beff77b
LB		 159#define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
160#define DO_NOT_FORCE_LINK_FAIL (1 << 10)
161#define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
162#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
163#define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2)
164#define FORCE_LINK_PASS (1 << 1)
165#define SERIAL_PORT_ENABLE (1 << 0)
fbd6a754 166
cc9754b3
LB		 167#define DEFAULT_RX_QUEUE_SIZE 400
168#define DEFAULT_TX_QUEUE_SIZE 800
fbd6a754 169
fbd6a754 170
7ca72a3b
LB		 171/*
172 * RX/TX descriptors.
fbd6a754
LB		 173 */
174#if defined(__BIG_ENDIAN)
cc9754b3 175struct rx_desc {
fbd6a754
LB		 176 u16 byte_cnt; /* Descriptor buffer byte count */
177 u16 buf_size; /* Buffer size */
178 u32 cmd_sts; /* Descriptor command status */
179 u32 next_desc_ptr; /* Next descriptor pointer */
180 u32 buf_ptr; /* Descriptor buffer pointer */
181};
182
cc9754b3 183struct tx_desc {
fbd6a754
LB		 184 u16 byte_cnt; /* buffer byte count */
185 u16 l4i_chk; /* CPU provided TCP checksum */
186 u32 cmd_sts; /* Command/status field */
187 u32 next_desc_ptr; /* Pointer to next descriptor */
188 u32 buf_ptr; /* pointer to buffer for this descriptor*/
189};
190#elif defined(__LITTLE_ENDIAN)
cc9754b3 191struct rx_desc {
fbd6a754
LB		 192 u32 cmd_sts; /* Descriptor command status */
193 u16 buf_size; /* Buffer size */
194 u16 byte_cnt; /* Descriptor buffer byte count */
195 u32 buf_ptr; /* Descriptor buffer pointer */
196 u32 next_desc_ptr; /* Next descriptor pointer */
197};
198
cc9754b3 199struct tx_desc {
fbd6a754
LB		 200 u32 cmd_sts; /* Command/status field */
201 u16 l4i_chk; /* CPU provided TCP checksum */
202 u16 byte_cnt; /* buffer byte count */
203 u32 buf_ptr; /* pointer to buffer for this descriptor*/
204 u32 next_desc_ptr; /* Pointer to next descriptor */
205};
206#else
207#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
208#endif
209
7ca72a3b 210/* RX & TX descriptor command */
cc9754b3 211#define BUFFER_OWNED_BY_DMA 0x80000000
7ca72a3b
LB		 212
213/* RX & TX descriptor status */
cc9754b3 214#define ERROR_SUMMARY 0x00000001
7ca72a3b
LB		 215
216/* RX descriptor status */
cc9754b3
LB		 217#define LAYER_4_CHECKSUM_OK 0x40000000
218#define RX_ENABLE_INTERRUPT 0x20000000
219#define RX_FIRST_DESC 0x08000000
220#define RX_LAST_DESC 0x04000000
7ca72a3b
LB		 221
222/* TX descriptor command */
cc9754b3
LB		 223#define TX_ENABLE_INTERRUPT 0x00800000
224#define GEN_CRC 0x00400000
225#define TX_FIRST_DESC 0x00200000
226#define TX_LAST_DESC 0x00100000
227#define ZERO_PADDING 0x00080000
228#define GEN_IP_V4_CHECKSUM 0x00040000
229#define GEN_TCP_UDP_CHECKSUM 0x00020000
230#define UDP_FRAME 0x00010000
7ca72a3b 231
cc9754b3 232#define TX_IHL_SHIFT 11
7ca72a3b
LB		 233
234
c9df406f 235/* global *******************************************************************/
e5371493 236struct mv643xx_eth_shared_private {
fc32b0e2
LB		 237 /*
238 * Ethernet controller base address.
239 */
cc9754b3 240 void __iomem *base;
c9df406f 241
fc32b0e2
LB		 242 /*
243 * Protects access to SMI_REG, which is shared between ports.
244 */
c9df406f
LB		 245 spinlock_t phy_lock;
246
fc32b0e2
LB		 247 /*
248 * Per-port MBUS window access register value.
249 */
c9df406f
LB		 250 u32 win_protect;
251
fc32b0e2
LB		 252 /*
253 * Hardware-specific parameters.
254 */
c9df406f 255 unsigned int t_clk;
773fc3ee 256 int extended_rx_coal_limit;
1e881592 257 int tx_bw_control_moved;
c9df406f
LB		 258};
259
260
261/* per-port *****************************************************************/
e5371493 262struct mib_counters {
fbd6a754
LB		 263 u64 good_octets_received;
264 u32 bad_octets_received;
265 u32 internal_mac_transmit_err;
266 u32 good_frames_received;
267 u32 bad_frames_received;
268 u32 broadcast_frames_received;
269 u32 multicast_frames_received;
270 u32 frames_64_octets;
271 u32 frames_65_to_127_octets;
272 u32 frames_128_to_255_octets;
273 u32 frames_256_to_511_octets;
274 u32 frames_512_to_1023_octets;
275 u32 frames_1024_to_max_octets;
276 u64 good_octets_sent;
277 u32 good_frames_sent;
278 u32 excessive_collision;
279 u32 multicast_frames_sent;
280 u32 broadcast_frames_sent;
281 u32 unrec_mac_control_received;
282 u32 fc_sent;
283 u32 good_fc_received;
284 u32 bad_fc_received;
285 u32 undersize_received;
286 u32 fragments_received;
287 u32 oversize_received;
288 u32 jabber_received;
289 u32 mac_receive_error;
290 u32 bad_crc_event;
291 u32 collision;
292 u32 late_collision;
293};
294
8a578111 295struct rx_queue {
64da80a2
LB		 296 int index;
297
8a578111
LB		 298 int rx_ring_size;
299
300 int rx_desc_count;
301 int rx_curr_desc;
302 int rx_used_desc;
303
304 struct rx_desc *rx_desc_area;
305 dma_addr_t rx_desc_dma;
306 int rx_desc_area_size;
307 struct sk_buff **rx_skb;
308
309 struct timer_list rx_oom;
310};
311
13d64285 312struct tx_queue {
3d6b35bc
LB		 313 int index;
314
13d64285 315 int tx_ring_size;
fbd6a754 316
13d64285
LB		 317 int tx_desc_count;
318 int tx_curr_desc;
319 int tx_used_desc;
fbd6a754 320
5daffe94 321 struct tx_desc *tx_desc_area;
fbd6a754
LB		 322 dma_addr_t tx_desc_dma;
323 int tx_desc_area_size;
324 struct sk_buff **tx_skb;
13d64285
LB		 325};
326
327struct mv643xx_eth_private {
328 struct mv643xx_eth_shared_private *shared;
fc32b0e2 329 int port_num;
13d64285 330
fc32b0e2 331 struct net_device *dev;
fbd6a754 332
fc32b0e2
LB		 333 struct mv643xx_eth_shared_private *shared_smi;
334 int phy_addr;
fbd6a754 335
fbd6a754 336 spinlock_t lock;
fbd6a754 337
fc32b0e2
LB		 338 struct mib_counters mib_counters;
339 struct work_struct tx_timeout_task;
fbd6a754 340 struct mii_if_info mii;
8a578111
LB		 341
342 /*
343 * RX state.
344 */
345 int default_rx_ring_size;
346 unsigned long rx_desc_sram_addr;
347 int rx_desc_sram_size;
64da80a2
LB		 348 u8 rxq_mask;
349 int rxq_primary;
8a578111 350 struct napi_struct napi;
64da80a2 351 struct rx_queue rxq[8];
13d64285
LB		 352
353 /*
354 * TX state.
355 */
356 int default_tx_ring_size;
357 unsigned long tx_desc_sram_addr;
358 int tx_desc_sram_size;
3d6b35bc
LB		 359 u8 txq_mask;
360 int txq_primary;
361 struct tx_queue txq[8];
13d64285
LB		 362#ifdef MV643XX_ETH_TX_FAST_REFILL
363 int tx_clean_threshold;
364#endif
fbd6a754 365};
1da177e4 366
fbd6a754 367
c9df406f 368/* port register accessors **************************************************/
e5371493 369static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
c9df406f 370{
cc9754b3 371 return readl(mp->shared->base + offset);
c9df406f 372}
fbd6a754 373
e5371493 374static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
c9df406f 375{
cc9754b3 376 writel(data, mp->shared->base + offset);
c9df406f 377}
fbd6a754 378
fbd6a754 379
c9df406f 380/* rxq/txq helper functions *************************************************/
8a578111 381static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
c9df406f 382{
64da80a2 383 return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
c9df406f 384}
fbd6a754 385
13d64285
LB		 386static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
387{
3d6b35bc 388 return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
13d64285
LB		 389}
390
8a578111 391static void rxq_enable(struct rx_queue *rxq)
c9df406f 392{
8a578111 393 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
64da80a2 394 wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index);
8a578111 395}
1da177e4 396
8a578111
LB		 397static void rxq_disable(struct rx_queue *rxq)
398{
399 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
64da80a2 400 u8 mask = 1 << rxq->index;
1da177e4 401
8a578111
LB		 402 wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8);
403 while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask)
404 udelay(10);
c9df406f
LB		 405}
406
13d64285 407static void txq_enable(struct tx_queue *txq)
1da177e4 408{
13d64285 409 struct mv643xx_eth_private *mp = txq_to_mp(txq);
3d6b35bc 410 wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index);
1da177e4
LT		 411}
412
13d64285 413static void txq_disable(struct tx_queue *txq)
1da177e4 414{
13d64285 415 struct mv643xx_eth_private *mp = txq_to_mp(txq);
3d6b35bc 416 u8 mask = 1 << txq->index;
c9df406f 417
13d64285
LB		 418 wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8);
419 while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask)
420 udelay(10);
421}
422
423static void __txq_maybe_wake(struct tx_queue *txq)
424{
425 struct mv643xx_eth_private *mp = txq_to_mp(txq);
426
3d6b35bc
LB		 427 /*
428 * netif_{stop,wake}_queue() flow control only applies to
429 * the primary queue.
430 */
431 BUG_ON(txq->index != mp->txq_primary);
432
13d64285
LB		 433 if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB)
434 netif_wake_queue(mp->dev);
1da177e4
LT		 435}
436
c9df406f
LB		 437
438/* rx ***********************************************************************/
13d64285 439static void txq_reclaim(struct tx_queue *txq, int force);
c9df406f 440
8a578111 441static void rxq_refill(struct rx_queue *rxq)
1da177e4 442{
8a578111 443 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
c9df406f 444 unsigned long flags;
1da177e4 445
c9df406f 446 spin_lock_irqsave(&mp->lock, flags);
c0d0f2ca 447
8a578111
LB		 448 while (rxq->rx_desc_count < rxq->rx_ring_size) {
449 int skb_size;
de34f225
LB		 450 struct sk_buff *skb;
451 int unaligned;
452 int rx;
453
8a578111
LB		 454 /*
455 * Reserve 2+14 bytes for an ethernet header (the
456 * hardware automatically prepends 2 bytes of dummy
457 * data to each received packet), 4 bytes for a VLAN
458 * header, and 4 bytes for the trailing FCS -- 24
459 * bytes total.
460 */
461 skb_size = mp->dev->mtu + 24;
462
463 skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1);
de34f225 464 if (skb == NULL)
1da177e4 465 break;
de34f225 466
908b637f 467 unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
b44cd572 468 if (unaligned)
908b637f 469 skb_reserve(skb, dma_get_cache_alignment() - unaligned);
de34f225 470
8a578111
LB		 471 rxq->rx_desc_count++;
472 rx = rxq->rx_used_desc;
473 rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size;
de34f225 474
8a578111
LB		 475 rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data,
476 skb_size, DMA_FROM_DEVICE);
477 rxq->rx_desc_area[rx].buf_size = skb_size;
478 rxq->rx_skb[rx] = skb;
de34f225 479 wmb();
8a578111 480 rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA |
de34f225
LB		 481 RX_ENABLE_INTERRUPT;
482 wmb();
483
fc32b0e2
LB		 484 /*
485 * The hardware automatically prepends 2 bytes of
486 * dummy data to each received packet, so that the
487 * IP header ends up 16-byte aligned.
488 */
489 skb_reserve(skb, 2);
1da177e4 490 }
de34f225 491
12e4ab79 492 if (rxq->rx_desc_count != rxq->rx_ring_size) {
8a578111
LB		 493 rxq->rx_oom.expires = jiffies + (HZ / 10);
494 add_timer(&rxq->rx_oom);
1da177e4 495 }
de34f225
LB		 496
497 spin_unlock_irqrestore(&mp->lock, flags);
1da177e4
LT		 498}
499
8a578111 500static inline void rxq_refill_timer_wrapper(unsigned long data)
1da177e4 501{
8a578111 502 rxq_refill((struct rx_queue *)data);
1da177e4
LT		 503}
504
8a578111 505static int rxq_process(struct rx_queue *rxq, int budget)
1da177e4 506{
8a578111
LB		 507 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
508 struct net_device_stats *stats = &mp->dev->stats;
509 int rx;
1da177e4 510
8a578111
LB		 511 rx = 0;
512 while (rx < budget) {
fc32b0e2 513 struct rx_desc *rx_desc;
96587661 514 unsigned int cmd_sts;
fc32b0e2 515 struct sk_buff *skb;
96587661 516 unsigned long flags;
d344bff9 517
96587661 518 spin_lock_irqsave(&mp->lock, flags);
ff561eef 519
8a578111 520 rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
1da177e4 521
96587661
LB		 522 cmd_sts = rx_desc->cmd_sts;
523 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
524 spin_unlock_irqrestore(&mp->lock, flags);
525 break;
526 }
527 rmb();
1da177e4 528
8a578111
LB		 529 skb = rxq->rx_skb[rxq->rx_curr_desc];
530 rxq->rx_skb[rxq->rx_curr_desc] = NULL;
ff561eef 531
8a578111 532 rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size;
ff561eef 533
96587661 534 spin_unlock_irqrestore(&mp->lock, flags);
1da177e4 535
fc32b0e2
LB		 536 dma_unmap_single(NULL, rx_desc->buf_ptr + 2,
537 mp->dev->mtu + 24, DMA_FROM_DEVICE);
8a578111
LB		 538 rxq->rx_desc_count--;
539 rx++;
b1dd9ca1 540
468d09f8
DF		 541 /*
542 * Update statistics.
fc32b0e2
LB		 543 *
544 * Note that the descriptor byte count includes 2 dummy
545 * bytes automatically inserted by the hardware at the
546 * start of the packet (which we don't count), and a 4
547 * byte CRC at the end of the packet (which we do count).
468d09f8 548 */
1da177e4 549 stats->rx_packets++;
fc32b0e2 550 stats->rx_bytes += rx_desc->byte_cnt - 2;
96587661 551
1da177e4 552 /*
fc32b0e2
LB		 553 * In case we received a packet without first / last bits
554 * on, or the error summary bit is set, the packet needs
555 * to be dropped.
1da177e4 556 */
96587661 557 if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
cc9754b3 558 (RX_FIRST_DESC | RX_LAST_DESC))
96587661 559 || (cmd_sts & ERROR_SUMMARY)) {
1da177e4 560 stats->rx_dropped++;
fc32b0e2 561
96587661 562 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
cc9754b3 563 (RX_FIRST_DESC | RX_LAST_DESC)) {
1da177e4 564 if (net_ratelimit())
fc32b0e2
LB		 565 dev_printk(KERN_ERR, &mp->dev->dev,
566 "received packet spanning "
567 "multiple descriptors\n");
1da177e4 568 }
fc32b0e2 569
96587661 570 if (cmd_sts & ERROR_SUMMARY)
1da177e4
LT		 571 stats->rx_errors++;
572
573 dev_kfree_skb_irq(skb);
574 } else {
575 /*
576 * The -4 is for the CRC in the trailer of the
577 * received packet
578 */
fc32b0e2 579 skb_put(skb, rx_desc->byte_cnt - 2 - 4);
1da177e4 580
96587661 581 if (cmd_sts & LAYER_4_CHECKSUM_OK) {
1da177e4
LT		 582 skb->ip_summed = CHECKSUM_UNNECESSARY;
583 skb->csum = htons(
96587661 584 (cmd_sts & 0x0007fff8) >> 3);
1da177e4 585 }
8a578111 586 skb->protocol = eth_type_trans(skb, mp->dev);
e5371493 587#ifdef MV643XX_ETH_NAPI
1da177e4
LT		 588 netif_receive_skb(skb);
589#else
590 netif_rx(skb);
591#endif
592 }
fc32b0e2 593
8a578111 594 mp->dev->last_rx = jiffies;
1da177e4 595 }
fc32b0e2 596
8a578111 597 rxq_refill(rxq);
1da177e4 598
8a578111 599 return rx;
1da177e4
LT		 600}
601
e5371493 602#ifdef MV643XX_ETH_NAPI
e5371493 603static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
d0412d96 604{
8a578111
LB		 605 struct mv643xx_eth_private *mp;
606 int rx;
64da80a2 607 int i;
8a578111
LB		 608
609 mp = container_of(napi, struct mv643xx_eth_private, napi);
d0412d96 610
e5371493 611#ifdef MV643XX_ETH_TX_FAST_REFILL
c9df406f 612 if (++mp->tx_clean_threshold > 5) {
c9df406f 613 mp->tx_clean_threshold = 0;
3d6b35bc
LB		 614 for (i = 0; i < 8; i++)
615 if (mp->txq_mask & (1 << i))
616 txq_reclaim(mp->txq + i, 0);
d0412d96 617 }
c9df406f 618#endif
d0412d96 619
64da80a2
LB		 620 rx = 0;
621 for (i = 7; rx < budget && i >= 0; i--)
622 if (mp->rxq_mask & (1 << i))
623 rx += rxq_process(mp->rxq + i, budget - rx);
d0412d96 624
8a578111
LB		 625 if (rx < budget) {
626 netif_rx_complete(mp->dev, napi);
627 wrl(mp, INT_CAUSE(mp->port_num), 0);
628 wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
226bb6b7 629 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
d0412d96 630 }
c9df406f 631
8a578111 632 return rx;
d0412d96 633}
c9df406f 634#endif
d0412d96 635
c9df406f
LB		 636
637/* tx ***********************************************************************/
c9df406f 638static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
1da177e4 639{
13d64285 640 int frag;
1da177e4 641
c9df406f 642 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
13d64285
LB		 643 skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
644 if (fragp->size <= 8 && fragp->page_offset & 7)
c9df406f 645 return 1;
1da177e4 646 }
13d64285 647
c9df406f
LB		 648 return 0;
649}
7303fde8 650
13d64285 651static int txq_alloc_desc_index(struct tx_queue *txq)
c9df406f
LB		 652{
653 int tx_desc_curr;
d0412d96 654
13d64285 655 BUG_ON(txq->tx_desc_count >= txq->tx_ring_size);
1da177e4 656
13d64285
LB		 657 tx_desc_curr = txq->tx_curr_desc;
658 txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size;
e4d00fa9 659
13d64285 660 BUG_ON(txq->tx_curr_desc == txq->tx_used_desc);
468d09f8 661
c9df406f
LB		 662 return tx_desc_curr;
663}
468d09f8 664
13d64285 665static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
c9df406f 666{
13d64285 667 int nr_frags = skb_shinfo(skb)->nr_frags;
c9df406f 668 int frag;
1da177e4 669
13d64285
LB		 670 for (frag = 0; frag < nr_frags; frag++) {
671 skb_frag_t *this_frag;
672 int tx_index;
673 struct tx_desc *desc;
674
675 this_frag = &skb_shinfo(skb)->frags[frag];
676 tx_index = txq_alloc_desc_index(txq);
677 desc = &txq->tx_desc_area[tx_index];
678
679 /*
680 * The last fragment will generate an interrupt
681 * which will free the skb on TX completion.
682 */
683 if (frag == nr_frags - 1) {
684 desc->cmd_sts = BUFFER_OWNED_BY_DMA |
685 ZERO_PADDING | TX_LAST_DESC |
686 TX_ENABLE_INTERRUPT;
687 txq->tx_skb[tx_index] = skb;
688 } else {
689 desc->cmd_sts = BUFFER_OWNED_BY_DMA;
690 txq->tx_skb[tx_index] = NULL;
691 }
692
c9df406f
LB		 693 desc->l4i_chk = 0;
694 desc->byte_cnt = this_frag->size;
695 desc->buf_ptr = dma_map_page(NULL, this_frag->page,
696 this_frag->page_offset,
697 this_frag->size,
698 DMA_TO_DEVICE);
699 }
1da177e4
LT		 700}
701
c9df406f
LB		 702static inline __be16 sum16_as_be(__sum16 sum)
703{
704 return (__force __be16)sum;
705}
1da177e4 706
13d64285 707static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
1da177e4 708{
13d64285 709 int nr_frags = skb_shinfo(skb)->nr_frags;
c9df406f 710 int tx_index;
cc9754b3 711 struct tx_desc *desc;
c9df406f
LB		 712 u32 cmd_sts;
713 int length;
1da177e4 714
cc9754b3 715 cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
1da177e4 716
13d64285
LB		 717 tx_index = txq_alloc_desc_index(txq);
718 desc = &txq->tx_desc_area[tx_index];
c9df406f
LB		 719
720 if (nr_frags) {
13d64285 721 txq_submit_frag_skb(txq, skb);
c9df406f
LB		 722
723 length = skb_headlen(skb);
13d64285 724 txq->tx_skb[tx_index] = NULL;
c9df406f 725 } else {
cc9754b3 726 cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
c9df406f 727 length = skb->len;
13d64285 728 txq->tx_skb[tx_index] = skb;
c9df406f
LB		 729 }
730
731 desc->byte_cnt = length;
732 desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
733
734 if (skb->ip_summed == CHECKSUM_PARTIAL) {
735 BUG_ON(skb->protocol != htons(ETH_P_IP));
736
cc9754b3
LB		 737 cmd_sts |= GEN_TCP_UDP_CHECKSUM |
738 GEN_IP_V4_CHECKSUM |
739 ip_hdr(skb)->ihl << TX_IHL_SHIFT;
c9df406f
LB		 740
741 switch (ip_hdr(skb)->protocol) {
742 case IPPROTO_UDP:
cc9754b3 743 cmd_sts |= UDP_FRAME;
c9df406f
LB		 744 desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
745 break;
746 case IPPROTO_TCP:
747 desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
748 break;
749 default:
750 BUG();
751 }
752 } else {
753 /* Errata BTS #50, IHL must be 5 if no HW checksum */
cc9754b3 754 cmd_sts |= 5 << TX_IHL_SHIFT;
c9df406f
LB		 755 desc->l4i_chk = 0;
756 }
757
758 /* ensure all other descriptors are written before first cmd_sts */
759 wmb();
760 desc->cmd_sts = cmd_sts;
761
762 /* ensure all descriptors are written before poking hardware */
763 wmb();
13d64285 764 txq_enable(txq);
c9df406f 765
13d64285 766 txq->tx_desc_count += nr_frags + 1;
1da177e4 767}
1da177e4 768
fc32b0e2 769static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
1da177e4 770{
e5371493 771 struct mv643xx_eth_private *mp = netdev_priv(dev);
c9df406f 772 struct net_device_stats *stats = &dev->stats;
13d64285 773 struct tx_queue *txq;
c9df406f 774 unsigned long flags;
afdb57a2 775
c9df406f
LB		 776 if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
777 stats->tx_dropped++;
fc32b0e2
LB		 778 dev_printk(KERN_DEBUG, &dev->dev,
779 "failed to linearize skb with tiny "
780 "unaligned fragment\n");
c9df406f
LB		 781 return NETDEV_TX_BUSY;
782 }
783
784 spin_lock_irqsave(&mp->lock, flags);
785
3d6b35bc 786 txq = mp->txq + mp->txq_primary;
13d64285
LB		 787
788 if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) {
c9df406f 789 spin_unlock_irqrestore(&mp->lock, flags);
3d6b35bc
LB		 790 if (txq->index == mp->txq_primary && net_ratelimit())
791 dev_printk(KERN_ERR, &dev->dev,
792 "primary tx queue full?!\n");
793 kfree_skb(skb);
794 return NETDEV_TX_OK;
c9df406f
LB		 795 }
796
13d64285 797 txq_submit_skb(txq, skb);
c9df406f
LB		 798 stats->tx_bytes += skb->len;
799 stats->tx_packets++;
800 dev->trans_start = jiffies;
801
3d6b35bc
LB		 802 if (txq->index == mp->txq_primary) {
803 int entries_left;
804
805 entries_left = txq->tx_ring_size - txq->tx_desc_count;
806 if (entries_left < MAX_DESCS_PER_SKB)
807 netif_stop_queue(dev);
808 }
c9df406f
LB		 809
810 spin_unlock_irqrestore(&mp->lock, flags);
811
812 return NETDEV_TX_OK;
1da177e4
LT		 813}
814
c9df406f 815
89df5fdc
LB		 816/* tx rate control **********************************************************/
817/*
818 * Set total maximum TX rate (shared by all TX queues for this port)
819 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
820 */
821static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
822{
823 int token_rate;
824 int mtu;
825 int bucket_size;
826
827 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
828 if (token_rate > 1023)
829 token_rate = 1023;
830
831 mtu = (mp->dev->mtu + 255) >> 8;
832 if (mtu > 63)
833 mtu = 63;
834
835 bucket_size = (burst + 255) >> 8;
836 if (bucket_size > 65535)
837 bucket_size = 65535;
838
1e881592
LB		 839 if (mp->shared->tx_bw_control_moved) {
840 wrl(mp, TX_BW_RATE_MOVED(mp->port_num), token_rate);
841 wrl(mp, TX_BW_MTU_MOVED(mp->port_num), mtu);
842 wrl(mp, TX_BW_BURST_MOVED(mp->port_num), bucket_size);
843 } else {
844 wrl(mp, TX_BW_RATE(mp->port_num), token_rate);
845 wrl(mp, TX_BW_MTU(mp->port_num), mtu);
846 wrl(mp, TX_BW_BURST(mp->port_num), bucket_size);
847 }
89df5fdc
LB		 848}
849
850static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
851{
852 struct mv643xx_eth_private *mp = txq_to_mp(txq);
853 int token_rate;
854 int bucket_size;
855
856 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
857 if (token_rate > 1023)
858 token_rate = 1023;
859
860 bucket_size = (burst + 255) >> 8;
861 if (bucket_size > 65535)
862 bucket_size = 65535;
863
3d6b35bc
LB		 864 wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14);
865 wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index),
89df5fdc
LB		 866 (bucket_size << 10) | token_rate);
867}
868
869static void txq_set_fixed_prio_mode(struct tx_queue *txq)
870{
871 struct mv643xx_eth_private *mp = txq_to_mp(txq);
872 int off;
873 u32 val;
874
875 /*
876 * Turn on fixed priority mode.
877 */
1e881592
LB		 878 if (mp->shared->tx_bw_control_moved)
879 off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
880 else
881 off = TXQ_FIX_PRIO_CONF(mp->port_num);
89df5fdc
LB		 882
883 val = rdl(mp, off);
3d6b35bc 884 val |= 1 << txq->index;
89df5fdc
LB		 885 wrl(mp, off, val);
886}
887
888static void txq_set_wrr(struct tx_queue *txq, int weight)
889{
890 struct mv643xx_eth_private *mp = txq_to_mp(txq);
891 int off;
892 u32 val;
893
894 /*
895 * Turn off fixed priority mode.
896 */
1e881592
LB		 897 if (mp->shared->tx_bw_control_moved)
898 off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
899 else
900 off = TXQ_FIX_PRIO_CONF(mp->port_num);
89df5fdc
LB		 901
902 val = rdl(mp, off);
3d6b35bc 903 val &= ~(1 << txq->index);
89df5fdc
LB		 904 wrl(mp, off, val);
905
906 /*
907 * Configure WRR weight for this queue.
908 */
3d6b35bc 909 off = TXQ_BW_WRR_CONF(mp->port_num, txq->index);
89df5fdc
LB		 910
911 val = rdl(mp, off);
912 val = (val & ~0xff) | (weight & 0xff);
913 wrl(mp, off, val);
914}
915
916
c9df406f 917/* mii management interface *************************************************/
fc32b0e2
LB		 918#define SMI_BUSY 0x10000000
919#define SMI_READ_VALID 0x08000000
920#define SMI_OPCODE_READ 0x04000000
921#define SMI_OPCODE_WRITE 0x00000000
c9df406f 922
fc32b0e2
LB		 923static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr,
924 unsigned int reg, unsigned int *value)
1da177e4 925{
cc9754b3 926 void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
c9df406f 927 unsigned long flags;
1da177e4
LT		 928 int i;
929
c9df406f
LB		 930 /* the SMI register is a shared resource */
931 spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
932
933 /* wait for the SMI register to become available */
cc9754b3 934 for (i = 0; readl(smi_reg) & SMI_BUSY; i++) {
e1bea50a 935 if (i == 1000) {
c9df406f
LB		 936 printk("%s: PHY busy timeout\n", mp->dev->name);
937 goto out;
938 }
e1bea50a 939 udelay(10);
1da177e4
LT		 940 }
941
fc32b0e2 942 writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
1da177e4 943
c9df406f 944 /* now wait for the data to be valid */
cc9754b3 945 for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) {
e1bea50a 946 if (i == 1000) {
c9df406f
LB		 947 printk("%s: PHY read timeout\n", mp->dev->name);
948 goto out;
949 }
e1bea50a 950 udelay(10);
c9df406f
LB		 951 }
952
953 *value = readl(smi_reg) & 0xffff;
954out:
955 spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
1da177e4
LT		 956}
957
fc32b0e2
LB		 958static void smi_reg_write(struct mv643xx_eth_private *mp,
959 unsigned int addr,
960 unsigned int reg, unsigned int value)
1da177e4 961{
cc9754b3 962 void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
c9df406f 963 unsigned long flags;
1da177e4
LT		 964 int i;
965
c9df406f
LB		 966 /* the SMI register is a shared resource */
967 spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
968
969 /* wait for the SMI register to become available */
cc9754b3 970 for (i = 0; readl(smi_reg) & SMI_BUSY; i++) {
e1bea50a 971 if (i == 1000) {
c9df406f
LB		 972 printk("%s: PHY busy timeout\n", mp->dev->name);
973 goto out;
974 }
e1bea50a 975 udelay(10);
1da177e4
LT		 976 }
977
fc32b0e2
LB		 978 writel(SMI_OPCODE_WRITE | (reg << 21) |
979 (addr << 16) | (value & 0xffff), smi_reg);
c9df406f
LB		 980out:
981 spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
982}
1da177e4 983
c9df406f
LB		 984
985/* mib counters *************************************************************/
fc32b0e2 986static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
c9df406f 987{
fc32b0e2 988 return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
1da177e4
LT		 989}
990
fc32b0e2 991static void mib_counters_clear(struct mv643xx_eth_private *mp)
d0412d96 992{
fc32b0e2
LB		 993 int i;
994
995 for (i = 0; i < 0x80; i += 4)
996 mib_read(mp, i);
c9df406f 997}
d0412d96 998
fc32b0e2 999static void mib_counters_update(struct mv643xx_eth_private *mp)
c9df406f 1000{
e5371493 1001 struct mib_counters *p = &mp->mib_counters;
4b8e3655 1002
fc32b0e2
LB		 1003 p->good_octets_received += mib_read(mp, 0x00);
1004 p->good_octets_received += (u64)mib_read(mp, 0x04) << 32;
1005 p->bad_octets_received += mib_read(mp, 0x08);
1006 p->internal_mac_transmit_err += mib_read(mp, 0x0c);
1007 p->good_frames_received += mib_read(mp, 0x10);
1008 p->bad_frames_received += mib_read(mp, 0x14);
1009 p->broadcast_frames_received += mib_read(mp, 0x18);
1010 p->multicast_frames_received += mib_read(mp, 0x1c);
1011 p->frames_64_octets += mib_read(mp, 0x20);
1012 p->frames_65_to_127_octets += mib_read(mp, 0x24);
1013 p->frames_128_to_255_octets += mib_read(mp, 0x28);
1014 p->frames_256_to_511_octets += mib_read(mp, 0x2c);
1015 p->frames_512_to_1023_octets += mib_read(mp, 0x30);
1016 p->frames_1024_to_max_octets += mib_read(mp, 0x34);
1017 p->good_octets_sent += mib_read(mp, 0x38);
1018 p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32;
1019 p->good_frames_sent += mib_read(mp, 0x40);
1020 p->excessive_collision += mib_read(mp, 0x44);
1021 p->multicast_frames_sent += mib_read(mp, 0x48);
1022 p->broadcast_frames_sent += mib_read(mp, 0x4c);
1023 p->unrec_mac_control_received += mib_read(mp, 0x50);
1024 p->fc_sent += mib_read(mp, 0x54);
1025 p->good_fc_received += mib_read(mp, 0x58);
1026 p->bad_fc_received += mib_read(mp, 0x5c);
1027 p->undersize_received += mib_read(mp, 0x60);
1028 p->fragments_received += mib_read(mp, 0x64);
1029 p->oversize_received += mib_read(mp, 0x68);
1030 p->jabber_received += mib_read(mp, 0x6c);
1031 p->mac_receive_error += mib_read(mp, 0x70);
1032 p->bad_crc_event += mib_read(mp, 0x74);
1033 p->collision += mib_read(mp, 0x78);
1034 p->late_collision += mib_read(mp, 0x7c);
d0412d96
JC		 1035}
1036
c9df406f
LB		 1037
1038/* ethtool ******************************************************************/
e5371493 1039struct mv643xx_eth_stats {
c9df406f
LB		 1040 char stat_string[ETH_GSTRING_LEN];
1041 int sizeof_stat;
16820054
LB		 1042 int netdev_off;
1043 int mp_off;
c9df406f
LB		 1044};
1045
16820054
LB		 1046#define SSTAT(m) \
1047 { #m, FIELD_SIZEOF(struct net_device_stats, m), \
1048 offsetof(struct net_device, stats.m), -1 }
1049
1050#define MIBSTAT(m) \
1051 { #m, FIELD_SIZEOF(struct mib_counters, m), \
1052 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1053
1054static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
1055 SSTAT(rx_packets),
1056 SSTAT(tx_packets),
1057 SSTAT(rx_bytes),
1058 SSTAT(tx_bytes),
1059 SSTAT(rx_errors),
1060 SSTAT(tx_errors),
1061 SSTAT(rx_dropped),
1062 SSTAT(tx_dropped),
1063 MIBSTAT(good_octets_received),
1064 MIBSTAT(bad_octets_received),
1065 MIBSTAT(internal_mac_transmit_err),
1066 MIBSTAT(good_frames_received),
1067 MIBSTAT(bad_frames_received),
1068 MIBSTAT(broadcast_frames_received),
1069 MIBSTAT(multicast_frames_received),
1070 MIBSTAT(frames_64_octets),
1071 MIBSTAT(frames_65_to_127_octets),
1072 MIBSTAT(frames_128_to_255_octets),
1073 MIBSTAT(frames_256_to_511_octets),
1074 MIBSTAT(frames_512_to_1023_octets),
1075 MIBSTAT(frames_1024_to_max_octets),
1076 MIBSTAT(good_octets_sent),
1077 MIBSTAT(good_frames_sent),
1078 MIBSTAT(excessive_collision),
1079 MIBSTAT(multicast_frames_sent),
1080 MIBSTAT(broadcast_frames_sent),
1081 MIBSTAT(unrec_mac_control_received),
1082 MIBSTAT(fc_sent),
1083 MIBSTAT(good_fc_received),
1084 MIBSTAT(bad_fc_received),
1085 MIBSTAT(undersize_received),
1086 MIBSTAT(fragments_received),
1087 MIBSTAT(oversize_received),
1088 MIBSTAT(jabber_received),
1089 MIBSTAT(mac_receive_error),
1090 MIBSTAT(bad_crc_event),
1091 MIBSTAT(collision),
1092 MIBSTAT(late_collision),
c9df406f
LB		 1093};
1094
e5371493 1095static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
d0412d96 1096{
e5371493 1097 struct mv643xx_eth_private *mp = netdev_priv(dev);
d0412d96
JC		 1098 int err;
1099
1100 spin_lock_irq(&mp->lock);
1101 err = mii_ethtool_gset(&mp->mii, cmd);
1102 spin_unlock_irq(&mp->lock);
1103
fc32b0e2
LB		 1104 /*
1105 * The MAC does not support 1000baseT_Half.
1106 */
d0412d96
JC		 1107 cmd->supported &= ~SUPPORTED_1000baseT_Half;
1108 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1109
1110 return err;
1111}
1112
e5371493 1113static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1da177e4 1114{
e5371493 1115 struct mv643xx_eth_private *mp = netdev_priv(dev);
ab4384a6
DF		 1116 int err;
1117
fc32b0e2
LB		 1118 /*
1119 * The MAC does not support 1000baseT_Half.
1120 */
1121 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1122
c9df406f
LB		 1123 spin_lock_irq(&mp->lock);
1124 err = mii_ethtool_sset(&mp->mii, cmd);
1125 spin_unlock_irq(&mp->lock);
85cf572c 1126
c9df406f
LB		 1127 return err;
1128}
1da177e4 1129
fc32b0e2
LB		 1130static void mv643xx_eth_get_drvinfo(struct net_device *dev,
1131 struct ethtool_drvinfo *drvinfo)
c9df406f 1132{
e5371493
LB		 1133 strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
1134 strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
c9df406f 1135 strncpy(drvinfo->fw_version, "N/A", 32);
fc32b0e2 1136 strncpy(drvinfo->bus_info, "platform", 32);
16820054 1137 drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
c9df406f 1138}
1da177e4 1139
fc32b0e2 1140static int mv643xx_eth_nway_reset(struct net_device *dev)
c9df406f 1141{
e5371493 1142 struct mv643xx_eth_private *mp = netdev_priv(dev);
1da177e4 1143
c9df406f
LB		 1144 return mii_nway_restart(&mp->mii);
1145}
1da177e4 1146
c9df406f
LB		 1147static u32 mv643xx_eth_get_link(struct net_device *dev)
1148{
e5371493 1149 struct mv643xx_eth_private *mp = netdev_priv(dev);
1da177e4 1150
c9df406f
LB		 1151 return mii_link_ok(&mp->mii);
1152}
1da177e4 1153
fc32b0e2
LB		 1154static void mv643xx_eth_get_strings(struct net_device *dev,
1155 uint32_t stringset, uint8_t *data)
c9df406f
LB		 1156{
1157 int i;
1da177e4 1158
fc32b0e2
LB		 1159 if (stringset == ETH_SS_STATS) {
1160 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
c9df406f 1161 memcpy(data + i * ETH_GSTRING_LEN,
16820054 1162 mv643xx_eth_stats[i].stat_string,
e5371493 1163 ETH_GSTRING_LEN);
c9df406f 1164 }
c9df406f
LB		 1165 }
1166}
1da177e4 1167
fc32b0e2
LB		 1168static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
1169 struct ethtool_stats *stats,
1170 uint64_t *data)
c9df406f 1171{
fc32b0e2 1172 struct mv643xx_eth_private *mp = dev->priv;
c9df406f 1173 int i;
1da177e4 1174
fc32b0e2 1175 mib_counters_update(mp);
1da177e4 1176
16820054
LB		 1177 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1178 const struct mv643xx_eth_stats *stat;
1179 void *p;
1180
1181 stat = mv643xx_eth_stats + i;
1182
1183 if (stat->netdev_off >= 0)
1184 p = ((void *)mp->dev) + stat->netdev_off;
1185 else
1186 p = ((void *)mp) + stat->mp_off;
1187
1188 data[i] = (stat->sizeof_stat == 8) ?
1189 *(uint64_t *)p : *(uint32_t *)p;
1da177e4 1190 }
c9df406f 1191}
1da177e4 1192
fc32b0e2 1193static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
c9df406f 1194{
fc32b0e2 1195 if (sset == ETH_SS_STATS)
16820054 1196 return ARRAY_SIZE(mv643xx_eth_stats);
fc32b0e2
LB		 1197
1198 return -EOPNOTSUPP;
c9df406f 1199}
1da177e4 1200
e5371493 1201static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
fc32b0e2
LB		 1202 .get_settings = mv643xx_eth_get_settings,
1203 .set_settings = mv643xx_eth_set_settings,
1204 .get_drvinfo = mv643xx_eth_get_drvinfo,
1205 .nway_reset = mv643xx_eth_nway_reset,
1206 .get_link = mv643xx_eth_get_link,
c9df406f 1207 .set_sg = ethtool_op_set_sg,
fc32b0e2
LB		 1208 .get_strings = mv643xx_eth_get_strings,
1209 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
e5371493 1210 .get_sset_count = mv643xx_eth_get_sset_count,
c9df406f 1211};
1da177e4 1212
bea3348e 1213
c9df406f 1214/* address handling *********************************************************/
5daffe94 1215static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
c9df406f 1216{
c9df406f
LB		 1217 unsigned int mac_h;
1218 unsigned int mac_l;
1da177e4 1219
fc32b0e2
LB		 1220 mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num));
1221 mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num));
1da177e4 1222
5daffe94
LB		 1223 addr[0] = (mac_h >> 24) & 0xff;
1224 addr[1] = (mac_h >> 16) & 0xff;
1225 addr[2] = (mac_h >> 8) & 0xff;
1226 addr[3] = mac_h & 0xff;
1227 addr[4] = (mac_l >> 8) & 0xff;
1228 addr[5] = mac_l & 0xff;
c9df406f 1229}
1da177e4 1230
e5371493 1231static void init_mac_tables(struct mv643xx_eth_private *mp)
c9df406f 1232{
fc32b0e2 1233 int i;
1da177e4 1234
fc32b0e2
LB		 1235 for (i = 0; i < 0x100; i += 4) {
1236 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
1237 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
c9df406f 1238 }
fc32b0e2
LB		 1239
1240 for (i = 0; i < 0x10; i += 4)
1241 wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0);
c9df406f 1242}
d0412d96 1243
e5371493 1244static void set_filter_table_entry(struct mv643xx_eth_private *mp,
fc32b0e2 1245 int table, unsigned char entry)
c9df406f
LB		 1246{
1247 unsigned int table_reg;
ab4384a6 1248
c9df406f 1249 /* Set "accepts frame bit" at specified table entry */
fc32b0e2
LB		 1250 table_reg = rdl(mp, table + (entry & 0xfc));
1251 table_reg |= 0x01 << (8 * (entry & 3));
1252 wrl(mp, table + (entry & 0xfc), table_reg);
1da177e4
LT		 1253}
1254
5daffe94 1255static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
1da177e4 1256{
c9df406f
LB		 1257 unsigned int mac_h;
1258 unsigned int mac_l;
1259 int table;
1da177e4 1260
fc32b0e2
LB		 1261 mac_l = (addr[4] << 8) | addr[5];
1262 mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
ff561eef 1263
fc32b0e2
LB		 1264 wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l);
1265 wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h);
1da177e4 1266
fc32b0e2 1267 table = UNICAST_TABLE(mp->port_num);
5daffe94 1268 set_filter_table_entry(mp, table, addr[5] & 0x0f);
1da177e4
LT		 1269}
1270
fc32b0e2 1271static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
1da177e4 1272{
e5371493 1273 struct mv643xx_eth_private *mp = netdev_priv(dev);
1da177e4 1274
fc32b0e2
LB		 1275 /* +2 is for the offset of the HW addr type */
1276 memcpy(dev->dev_addr, addr + 2, 6);
1277
cc9754b3
LB		 1278 init_mac_tables(mp);
1279 uc_addr_set(mp, dev->dev_addr);
1da177e4
LT		 1280
1281 return 0;
1282}
1283
69876569
LB		 1284static int addr_crc(unsigned char *addr)
1285{
1286 int crc = 0;
1287 int i;
1288
1289 for (i = 0; i < 6; i++) {
1290 int j;
1291
1292 crc = (crc ^ addr[i]) << 8;
1293 for (j = 7; j >= 0; j--) {
1294 if (crc & (0x100 << j))
1295 crc ^= 0x107 << j;
1296 }
1297 }
1298
1299 return crc;
1300}
1301
fc32b0e2 1302static void mv643xx_eth_set_rx_mode(struct net_device *dev)
1da177e4 1303{
fc32b0e2
LB		 1304 struct mv643xx_eth_private *mp = netdev_priv(dev);
1305 u32 port_config;
1306 struct dev_addr_list *addr;
1307 int i;
c8aaea25 1308
fc32b0e2
LB		 1309 port_config = rdl(mp, PORT_CONFIG(mp->port_num));
1310 if (dev->flags & IFF_PROMISC)
1311 port_config |= UNICAST_PROMISCUOUS_MODE;
1312 else
1313 port_config &= ~UNICAST_PROMISCUOUS_MODE;
1314 wrl(mp, PORT_CONFIG(mp->port_num), port_config);
1da177e4 1315
fc32b0e2
LB		 1316 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
1317 int port_num = mp->port_num;
1318 u32 accept = 0x01010101;
c8aaea25 1319
fc32b0e2
LB		 1320 for (i = 0; i < 0x100; i += 4) {
1321 wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
1322 wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
c9df406f
LB		 1323 }
1324 return;
1325 }
c8aaea25 1326
fc32b0e2
LB		 1327 for (i = 0; i < 0x100; i += 4) {
1328 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
1329 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
1da177e4
LT		 1330 }
1331
fc32b0e2
LB		 1332 for (addr = dev->mc_list; addr != NULL; addr = addr->next) {
1333 u8 *a = addr->da_addr;
1334 int table;
324ff2c1 1335
fc32b0e2
LB		 1336 if (addr->da_addrlen != 6)
1337 continue;
1da177e4 1338
fc32b0e2
LB		 1339 if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
1340 table = SPECIAL_MCAST_TABLE(mp->port_num);
1341 set_filter_table_entry(mp, table, a[5]);
1342 } else {
1343 int crc = addr_crc(a);
1da177e4 1344
fc32b0e2
LB		 1345 table = OTHER_MCAST_TABLE(mp->port_num);
1346 set_filter_table_entry(mp, table, crc);
1347 }
1348 }
c9df406f 1349}
c8aaea25 1350
c8aaea25 1351
c9df406f 1352/* rx/tx queue initialisation ***********************************************/
64da80a2 1353static int rxq_init(struct mv643xx_eth_private *mp, int index)
c9df406f 1354{
64da80a2 1355 struct rx_queue *rxq = mp->rxq + index;
8a578111
LB		 1356 struct rx_desc *rx_desc;
1357 int size;
c9df406f
LB		 1358 int i;
1359
64da80a2
LB		 1360 rxq->index = index;
1361
8a578111
LB		 1362 rxq->rx_ring_size = mp->default_rx_ring_size;
1363
1364 rxq->rx_desc_count = 0;
1365 rxq->rx_curr_desc = 0;
1366 rxq->rx_used_desc = 0;
1367
1368 size = rxq->rx_ring_size * sizeof(struct rx_desc);
1369
64da80a2 1370 if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) {
8a578111
LB		 1371 rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
1372 mp->rx_desc_sram_size);
1373 rxq->rx_desc_dma = mp->rx_desc_sram_addr;
1374 } else {
1375 rxq->rx_desc_area = dma_alloc_coherent(NULL, size,
1376 &rxq->rx_desc_dma,
1377 GFP_KERNEL);
f7ea3337
PJ		 1378 }
1379
8a578111
LB		 1380 if (rxq->rx_desc_area == NULL) {
1381 dev_printk(KERN_ERR, &mp->dev->dev,
1382 "can't allocate rx ring (%d bytes)\n", size);
1383 goto out;
1384 }
1385 memset(rxq->rx_desc_area, 0, size);
1da177e4 1386
8a578111
LB		 1387 rxq->rx_desc_area_size = size;
1388 rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
1389 GFP_KERNEL);
1390 if (rxq->rx_skb == NULL) {
1391 dev_printk(KERN_ERR, &mp->dev->dev,
1392 "can't allocate rx skb ring\n");
1393 goto out_free;
1394 }
1395
1396 rx_desc = (struct rx_desc *)rxq->rx_desc_area;
1397 for (i = 0; i < rxq->rx_ring_size; i++) {
1398 int nexti = (i + 1) % rxq->rx_ring_size;
1399 rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
1400 nexti * sizeof(struct rx_desc);
1401 }
1402
1403 init_timer(&rxq->rx_oom);
1404 rxq->rx_oom.data = (unsigned long)rxq;
1405 rxq->rx_oom.function = rxq_refill_timer_wrapper;
1406
1407 return 0;
1408
1409
1410out_free:
64da80a2 1411 if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size)
8a578111
LB		 1412 iounmap(rxq->rx_desc_area);
1413 else
1414 dma_free_coherent(NULL, size,
1415 rxq->rx_desc_area,
1416 rxq->rx_desc_dma);
1417
1418out:
1419 return -ENOMEM;
c9df406f 1420}
c8aaea25 1421
8a578111 1422static void rxq_deinit(struct rx_queue *rxq)
c9df406f 1423{
8a578111
LB		 1424 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
1425 int i;
1426
1427 rxq_disable(rxq);
c8aaea25 1428
8a578111 1429 del_timer_sync(&rxq->rx_oom);
c9df406f 1430
8a578111
LB		 1431 for (i = 0; i < rxq->rx_ring_size; i++) {
1432 if (rxq->rx_skb[i]) {
1433 dev_kfree_skb(rxq->rx_skb[i]);
1434 rxq->rx_desc_count--;
1da177e4 1435 }
c8aaea25 1436 }
1da177e4 1437
8a578111
LB		 1438 if (rxq->rx_desc_count) {
1439 dev_printk(KERN_ERR, &mp->dev->dev,
1440 "error freeing rx ring -- %d skbs stuck\n",
1441 rxq->rx_desc_count);
1442 }
1443
64da80a2
LB		 1444 if (rxq->index == mp->rxq_primary &&
1445 rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
8a578111 1446 iounmap(rxq->rx_desc_area);
c9df406f 1447 else
8a578111
LB		 1448 dma_free_coherent(NULL, rxq->rx_desc_area_size,
1449 rxq->rx_desc_area, rxq->rx_desc_dma);
1450
1451 kfree(rxq->rx_skb);
c9df406f 1452}
1da177e4 1453
3d6b35bc 1454static int txq_init(struct mv643xx_eth_private *mp, int index)
c9df406f 1455{
3d6b35bc 1456 struct tx_queue *txq = mp->txq + index;
13d64285
LB		 1457 struct tx_desc *tx_desc;
1458 int size;
c9df406f 1459 int i;
1da177e4 1460
3d6b35bc
LB		 1461 txq->index = index;
1462
13d64285
LB		 1463 txq->tx_ring_size = mp->default_tx_ring_size;
1464
1465 txq->tx_desc_count = 0;
1466 txq->tx_curr_desc = 0;
1467 txq->tx_used_desc = 0;
1468
1469 size = txq->tx_ring_size * sizeof(struct tx_desc);
1470
3d6b35bc 1471 if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) {
13d64285
LB		 1472 txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
1473 mp->tx_desc_sram_size);
1474 txq->tx_desc_dma = mp->tx_desc_sram_addr;
1475 } else {
1476 txq->tx_desc_area = dma_alloc_coherent(NULL, size,
1477 &txq->tx_desc_dma,
1478 GFP_KERNEL);
1479 }
1480
1481 if (txq->tx_desc_area == NULL) {
1482 dev_printk(KERN_ERR, &mp->dev->dev,
1483 "can't allocate tx ring (%d bytes)\n", size);
1484 goto out;
c9df406f 1485 }
13d64285
LB		 1486 memset(txq->tx_desc_area, 0, size);
1487
1488 txq->tx_desc_area_size = size;
1489 txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb),
1490 GFP_KERNEL);
1491 if (txq->tx_skb == NULL) {
1492 dev_printk(KERN_ERR, &mp->dev->dev,
1493 "can't allocate tx skb ring\n");
1494 goto out_free;
1495 }
1496
1497 tx_desc = (struct tx_desc *)txq->tx_desc_area;
1498 for (i = 0; i < txq->tx_ring_size; i++) {
1499 int nexti = (i + 1) % txq->tx_ring_size;
1500 tx_desc[i].next_desc_ptr = txq->tx_desc_dma +
1501 nexti * sizeof(struct tx_desc);
1502 }
1503
1504 return 0;
1505
c9df406f 1506
13d64285 1507out_free:
3d6b35bc 1508 if (index == mp->txq_primary && size <= mp->tx_desc_sram_size)
13d64285
LB		 1509 iounmap(txq->tx_desc_area);
1510 else
1511 dma_free_coherent(NULL, size,
1512 txq->tx_desc_area,
1513 txq->tx_desc_dma);
c9df406f 1514
13d64285
LB		 1515out:
1516 return -ENOMEM;
c8aaea25 1517}
1da177e4 1518
13d64285 1519static void txq_reclaim(struct tx_queue *txq, int force)
c8aaea25 1520{
13d64285 1521 struct mv643xx_eth_private *mp = txq_to_mp(txq);
c8aaea25 1522 unsigned long flags;
1da177e4 1523
13d64285
LB		 1524 spin_lock_irqsave(&mp->lock, flags);
1525 while (txq->tx_desc_count > 0) {
1526 int tx_index;
1527 struct tx_desc *desc;
1528 u32 cmd_sts;
1529 struct sk_buff *skb;
1530 dma_addr_t addr;
1531 int count;
4d64e718 1532
13d64285
LB		 1533 tx_index = txq->tx_used_desc;
1534 desc = &txq->tx_desc_area[tx_index];
c9df406f 1535 cmd_sts = desc->cmd_sts;
4d64e718 1536
13d64285
LB		 1537 if (!force && (cmd_sts & BUFFER_OWNED_BY_DMA))
1538 break;
1da177e4 1539
13d64285
LB		 1540 txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size;
1541 txq->tx_desc_count--;
1da177e4 1542
c9df406f
LB		 1543 addr = desc->buf_ptr;
1544 count = desc->byte_cnt;
13d64285
LB		 1545 skb = txq->tx_skb[tx_index];
1546 txq->tx_skb[tx_index] = NULL;
c8aaea25 1547
cc9754b3 1548 if (cmd_sts & ERROR_SUMMARY) {
13d64285
LB		 1549 dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
1550 mp->dev->stats.tx_errors++;
c9df406f 1551 }
1da177e4 1552
13d64285
LB		 1553 /*
1554 * Drop mp->lock while we free the skb.
1555 */
c9df406f 1556 spin_unlock_irqrestore(&mp->lock, flags);
1da177e4 1557
cc9754b3 1558 if (cmd_sts & TX_FIRST_DESC)
c9df406f
LB		 1559 dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
1560 else
1561 dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
c2e5b352 1562
c9df406f
LB		 1563 if (skb)
1564 dev_kfree_skb_irq(skb);
63c9e549 1565
13d64285 1566 spin_lock_irqsave(&mp->lock, flags);
c9df406f 1567 }
13d64285 1568 spin_unlock_irqrestore(&mp->lock, flags);
c9df406f 1569}
1da177e4 1570
13d64285 1571static void txq_deinit(struct tx_queue *txq)
c9df406f 1572{
13d64285 1573 struct mv643xx_eth_private *mp = txq_to_mp(txq);
fa3959f4 1574
13d64285
LB		 1575 txq_disable(txq);
1576 txq_reclaim(txq, 1);
1da177e4 1577
13d64285 1578 BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
1da177e4 1579
3d6b35bc
LB		 1580 if (txq->index == mp->txq_primary &&
1581 txq->tx_desc_area_size <= mp->tx_desc_sram_size)
13d64285 1582 iounmap(txq->tx_desc_area);
c9df406f 1583 else
13d64285
LB		 1584 dma_free_coherent(NULL, txq->tx_desc_area_size,
1585 txq->tx_desc_area, txq->tx_desc_dma);
1586
1587 kfree(txq->tx_skb);
c9df406f 1588}
1da177e4 1589
1da177e4 1590
c9df406f 1591/* netdev ops and related ***************************************************/
fc32b0e2 1592static void update_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
c9df406f 1593{
13d64285
LB		 1594 u32 pscr_o;
1595 u32 pscr_n;
1da177e4 1596
13d64285 1597 pscr_o = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
63c9e549 1598
c9df406f 1599 /* clear speed, duplex and rx buffer size fields */
13d64285
LB		 1600 pscr_n = pscr_o & ~(SET_MII_SPEED_TO_100 |
1601 SET_GMII_SPEED_TO_1000 |
1602 SET_FULL_DUPLEX_MODE |
1603 MAX_RX_PACKET_MASK);
1da177e4 1604
fc32b0e2 1605 if (speed == SPEED_1000) {
13d64285
LB		 1606 pscr_n |= SET_GMII_SPEED_TO_1000 | MAX_RX_PACKET_9700BYTE;
1607 } else {
fc32b0e2 1608 if (speed == SPEED_100)
13d64285
LB		 1609 pscr_n |= SET_MII_SPEED_TO_100;
1610 pscr_n |= MAX_RX_PACKET_1522BYTE;
c9df406f 1611 }
1da177e4 1612
fc32b0e2 1613 if (duplex == DUPLEX_FULL)
13d64285
LB		 1614 pscr_n |= SET_FULL_DUPLEX_MODE;
1615
1616 if (pscr_n != pscr_o) {
1617 if ((pscr_o & SERIAL_PORT_ENABLE) == 0)
1618 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
c9df406f 1619 else {
3d6b35bc
LB		 1620 int i;
1621
1622 for (i = 0; i < 8; i++)
1623 if (mp->txq_mask & (1 << i))
1624 txq_disable(mp->txq + i);
1625
13d64285
LB		 1626 pscr_o &= ~SERIAL_PORT_ENABLE;
1627 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_o);
1628 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
1629 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
3d6b35bc
LB		 1630
1631 for (i = 0; i < 8; i++)
1632 if (mp->txq_mask & (1 << i))
1633 txq_enable(mp->txq + i);
c9df406f
LB		 1634 }
1635 }
1636}
84dd619e 1637
fc32b0e2 1638static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
c9df406f
LB		 1639{
1640 struct net_device *dev = (struct net_device *)dev_id;
e5371493 1641 struct mv643xx_eth_private *mp = netdev_priv(dev);
fc32b0e2
LB		 1642 u32 int_cause;
1643 u32 int_cause_ext;
226bb6b7 1644 u32 txq_active;
ce4e2e45 1645
226bb6b7
LB		 1646 int_cause = rdl(mp, INT_CAUSE(mp->port_num)) &
1647 (INT_TX_END | INT_RX | INT_EXT);
fc32b0e2
LB		 1648 if (int_cause == 0)
1649 return IRQ_NONE;
1650
1651 int_cause_ext = 0;
cc9754b3 1652 if (int_cause & INT_EXT) {
13d64285 1653 int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num))
073a345c 1654 & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
13d64285 1655 wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext);
c9df406f 1656 }
1da177e4 1657
fc32b0e2 1658 if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK)) {
c9df406f 1659 if (mii_link_ok(&mp->mii)) {
13d64285 1660 struct ethtool_cmd cmd;
3d6b35bc 1661 int i;
13d64285 1662
c9df406f 1663 mii_ethtool_gset(&mp->mii, &cmd);
fc32b0e2 1664 update_pscr(mp, cmd.speed, cmd.duplex);
3d6b35bc
LB		 1665 for (i = 0; i < 8; i++)
1666 if (mp->txq_mask & (1 << i))
1667 txq_enable(mp->txq + i);
1668
c9df406f
LB		 1669 if (!netif_carrier_ok(dev)) {
1670 netif_carrier_on(dev);
3d6b35bc 1671 __txq_maybe_wake(mp->txq + mp->txq_primary);
c9df406f
LB		 1672 }
1673 } else if (netif_carrier_ok(dev)) {
1674 netif_stop_queue(dev);
1675 netif_carrier_off(dev);
1676 }
1677 }
1da177e4 1678
64da80a2
LB		 1679 /*
1680 * RxBuffer or RxError set for any of the 8 queues?
1681 */
e5371493 1682#ifdef MV643XX_ETH_NAPI
cc9754b3 1683 if (int_cause & INT_RX) {
13d64285 1684 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
13d64285 1685 rdl(mp, INT_MASK(mp->port_num));
1da177e4 1686
c9df406f 1687 netif_rx_schedule(dev, &mp->napi);
84dd619e 1688 }
c9df406f 1689#else
64da80a2
LB		 1690 if (int_cause & INT_RX) {
1691 int i;
1692
1693 for (i = 7; i >= 0; i--)
1694 if (mp->rxq_mask & (1 << i))
1695 rxq_process(mp->rxq + i, INT_MAX);
1696 }
c9df406f 1697#endif
fc32b0e2 1698
226bb6b7
LB		 1699 txq_active = rdl(mp, TXQ_COMMAND(mp->port_num));
1700
3d6b35bc
LB		 1701 /*
1702 * TxBuffer or TxError set for any of the 8 queues?
1703 */
13d64285 1704 if (int_cause_ext & INT_EXT_TX) {
3d6b35bc
LB		 1705 int i;
1706
1707 for (i = 0; i < 8; i++)
1708 if (mp->txq_mask & (1 << i))
1709 txq_reclaim(mp->txq + i, 0);
226bb6b7 1710 }
3d6b35bc 1711
226bb6b7
LB		 1712 /*
1713 * Any TxEnd interrupts?
1714 */
1715 if (int_cause & INT_TX_END) {
1716 int i;
1717
1718 wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_TX_END));
1719 for (i = 0; i < 8; i++) {
1720 struct tx_queue *txq = mp->txq + i;
1721 if (txq->tx_desc_count && !((txq_active >> i) & 1))
1722 txq_enable(txq);
1723 }
1724 }
1725
1726 /*
1727 * Enough space again in the primary TX queue for a full packet?
1728 */
1729 if (int_cause_ext & INT_EXT_TX) {
1730 struct tx_queue *txq = mp->txq + mp->txq_primary;
1731 __txq_maybe_wake(txq);
13d64285 1732 }
1da177e4 1733
c9df406f 1734 return IRQ_HANDLED;
1da177e4
LT		 1735}
1736
e5371493 1737static void phy_reset(struct mv643xx_eth_private *mp)
1da177e4 1738{
fc32b0e2 1739 unsigned int data;
1da177e4 1740
fc32b0e2
LB		 1741 smi_reg_read(mp, mp->phy_addr, 0, &data);
1742 data |= 0x8000;
1743 smi_reg_write(mp, mp->phy_addr, 0, data);
1da177e4 1744
c9df406f
LB		 1745 do {
1746 udelay(1);
fc32b0e2
LB		 1747 smi_reg_read(mp, mp->phy_addr, 0, &data);
1748 } while (data & 0x8000);
1da177e4
LT		 1749}
1750
fc32b0e2 1751static void port_start(struct mv643xx_eth_private *mp)
1da177e4 1752{
d0412d96
JC		 1753 u32 pscr;
1754 struct ethtool_cmd ethtool_cmd;
8a578111 1755 int i;
1da177e4 1756
8a578111
LB		 1757 /*
1758 * Configure basic link parameters.
1759 */
1760 pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
1761 pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS);
1762 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1763 pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
1764 DISABLE_AUTO_NEG_SPEED_GMII |
1765 DISABLE_AUTO_NEG_FOR_DUPLEX |
1766 DO_NOT_FORCE_LINK_FAIL |
1767 SERIAL_PORT_CONTROL_RESERVED;
1768 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1769 pscr |= SERIAL_PORT_ENABLE;
1770 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1da177e4 1771
8a578111
LB		 1772 wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
1773
fc32b0e2 1774 mv643xx_eth_get_settings(mp->dev, &ethtool_cmd);
8a578111 1775 phy_reset(mp);
fc32b0e2 1776 mv643xx_eth_set_settings(mp->dev, &ethtool_cmd);
1da177e4 1777
13d64285
LB		 1778 /*
1779 * Configure TX path and queues.
1780 */
89df5fdc 1781 tx_set_rate(mp, 1000000000, 16777216);
3d6b35bc
LB		 1782 for (i = 0; i < 8; i++) {
1783 struct tx_queue *txq = mp->txq + i;
1784 int off = TXQ_CURRENT_DESC_PTR(mp->port_num, i);
13d64285
LB		 1785 u32 addr;
1786
3d6b35bc
LB		 1787 if ((mp->txq_mask & (1 << i)) == 0)
1788 continue;
1789
13d64285
LB		 1790 addr = (u32)txq->tx_desc_dma;
1791 addr += txq->tx_curr_desc * sizeof(struct tx_desc);
1792 wrl(mp, off, addr);
89df5fdc
LB		 1793
1794 txq_set_rate(txq, 1000000000, 16777216);
1795 txq_set_fixed_prio_mode(txq);
13d64285
LB		 1796 }
1797
fc32b0e2
LB		 1798 /*
1799 * Add configured unicast address to address filter table.
1800 */
1801 uc_addr_set(mp, mp->dev->dev_addr);
1da177e4 1802
d9a073ea
LB		 1803 /*
1804 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
1805 * frames to RX queue #0.
1806 */
8a578111 1807 wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000);
01999873 1808
376489a2
LB		 1809 /*
1810 * Treat BPDUs as normal multicasts, and disable partition mode.
1811 */
8a578111 1812 wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000);
01999873 1813
8a578111 1814 /*
64da80a2 1815 * Enable the receive queues.
8a578111 1816 */
64da80a2
LB		 1817 for (i = 0; i < 8; i++) {
1818 struct rx_queue *rxq = mp->rxq + i;
1819 int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i);
8a578111 1820 u32 addr;
1da177e4 1821
64da80a2
LB		 1822 if ((mp->rxq_mask & (1 << i)) == 0)
1823 continue;
1824
8a578111
LB		 1825 addr = (u32)rxq->rx_desc_dma;
1826 addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
1827 wrl(mp, off, addr);
1da177e4 1828
8a578111
LB		 1829 rxq_enable(rxq);
1830 }
1da177e4
LT		 1831}
1832
ffd86bbe 1833static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
1da177e4 1834{
c9df406f 1835 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
773fc3ee 1836 u32 val;
1da177e4 1837
773fc3ee
LB		 1838 val = rdl(mp, SDMA_CONFIG(mp->port_num));
1839 if (mp->shared->extended_rx_coal_limit) {
1840 if (coal > 0xffff)
1841 coal = 0xffff;
1842 val &= ~0x023fff80;
1843 val |= (coal & 0x8000) << 10;
1844 val |= (coal & 0x7fff) << 7;
1845 } else {
1846 if (coal > 0x3fff)
1847 coal = 0x3fff;
1848 val &= ~0x003fff00;
1849 val |= (coal & 0x3fff) << 8;
1850 }
1851 wrl(mp, SDMA_CONFIG(mp->port_num), val);
1da177e4
LT		 1852}
1853
ffd86bbe 1854static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
1da177e4 1855{
c9df406f 1856 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
1da177e4 1857
fc32b0e2
LB		 1858 if (coal > 0x3fff)
1859 coal = 0x3fff;
1860 wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4);
16e03018
DF		 1861}
1862
c9df406f 1863static int mv643xx_eth_open(struct net_device *dev)
16e03018 1864{
e5371493 1865 struct mv643xx_eth_private *mp = netdev_priv(dev);
c9df406f 1866 int err;
64da80a2 1867 int i;
16e03018 1868
fc32b0e2
LB		 1869 wrl(mp, INT_CAUSE(mp->port_num), 0);
1870 wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
1871 rdl(mp, INT_CAUSE_EXT(mp->port_num));
c9df406f 1872
fc32b0e2
LB		 1873 err = request_irq(dev->irq, mv643xx_eth_irq,
1874 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
1875 dev->name, dev);
c9df406f 1876 if (err) {
fc32b0e2 1877 dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n");
c9df406f 1878 return -EAGAIN;
16e03018
DF		 1879 }
1880
fc32b0e2 1881 init_mac_tables(mp);
16e03018 1882
64da80a2
LB		 1883 for (i = 0; i < 8; i++) {
1884 if ((mp->rxq_mask & (1 << i)) == 0)
1885 continue;
1886
1887 err = rxq_init(mp, i);
1888 if (err) {
1889 while (--i >= 0)
1890 if (mp->rxq_mask & (1 << i))
1891 rxq_deinit(mp->rxq + i);
1892 goto out;
1893 }
1894
1895 rxq_refill(mp->rxq + i);
1896 }
8a578111 1897
3d6b35bc
LB		 1898 for (i = 0; i < 8; i++) {
1899 if ((mp->txq_mask & (1 << i)) == 0)
1900 continue;
1901
1902 err = txq_init(mp, i);
1903 if (err) {
1904 while (--i >= 0)
1905 if (mp->txq_mask & (1 << i))
1906 txq_deinit(mp->txq + i);
1907 goto out_free;
1908 }
1909 }
16e03018 1910
e5371493 1911#ifdef MV643XX_ETH_NAPI
c9df406f
LB		 1912 napi_enable(&mp->napi);
1913#endif
16e03018 1914
fc32b0e2 1915 port_start(mp);
16e03018 1916
ffd86bbe
LB		 1917 set_rx_coal(mp, 0);
1918 set_tx_coal(mp, 0);
16e03018 1919
fc32b0e2
LB		 1920 wrl(mp, INT_MASK_EXT(mp->port_num),
1921 INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
16e03018 1922
226bb6b7 1923 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
16e03018 1924
c9df406f
LB		 1925 return 0;
1926
13d64285 1927
fc32b0e2 1928out_free:
64da80a2
LB		 1929 for (i = 0; i < 8; i++)
1930 if (mp->rxq_mask & (1 << i))
1931 rxq_deinit(mp->rxq + i);
fc32b0e2 1932out:
c9df406f
LB		 1933 free_irq(dev->irq, dev);
1934
1935 return err;
16e03018
DF		 1936}
1937
e5371493 1938static void port_reset(struct mv643xx_eth_private *mp)
1da177e4 1939{
fc32b0e2 1940 unsigned int data;
64da80a2 1941 int i;
1da177e4 1942
64da80a2
LB		 1943 for (i = 0; i < 8; i++) {
1944 if (mp->rxq_mask & (1 << i))
1945 rxq_disable(mp->rxq + i);
3d6b35bc
LB		 1946 if (mp->txq_mask & (1 << i))
1947 txq_disable(mp->txq + i);
64da80a2 1948 }
13d64285
LB		 1949 while (!(rdl(mp, PORT_STATUS(mp->port_num)) & TX_FIFO_EMPTY))
1950 udelay(10);
1da177e4 1951
c9df406f 1952 /* Reset the Enable bit in the Configuration Register */
fc32b0e2
LB		 1953 data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
1954 data &= ~(SERIAL_PORT_ENABLE |
1955 DO_NOT_FORCE_LINK_FAIL |
1956 FORCE_LINK_PASS);
1957 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data);
1da177e4
LT		 1958}
1959
c9df406f 1960static int mv643xx_eth_stop(struct net_device *dev)
1da177e4 1961{
e5371493 1962 struct mv643xx_eth_private *mp = netdev_priv(dev);
64da80a2 1963 int i;
1da177e4 1964
fc32b0e2
LB		 1965 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
1966 rdl(mp, INT_MASK(mp->port_num));
1da177e4 1967
e5371493 1968#ifdef MV643XX_ETH_NAPI
c9df406f
LB		 1969 napi_disable(&mp->napi);
1970#endif
1971 netif_carrier_off(dev);
1972 netif_stop_queue(dev);
1da177e4 1973
fc32b0e2
LB		 1974 free_irq(dev->irq, dev);
1975
cc9754b3 1976 port_reset(mp);
fc32b0e2 1977 mib_counters_update(mp);
1da177e4 1978
64da80a2
LB		 1979 for (i = 0; i < 8; i++) {
1980 if (mp->rxq_mask & (1 << i))
1981 rxq_deinit(mp->rxq + i);
3d6b35bc
LB		 1982 if (mp->txq_mask & (1 << i))
1983 txq_deinit(mp->txq + i);
64da80a2 1984 }
1da177e4 1985
c9df406f 1986 return 0;
1da177e4
LT		 1987}
1988
fc32b0e2 1989static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1da177e4 1990{
e5371493 1991 struct mv643xx_eth_private *mp = netdev_priv(dev);
1da177e4 1992
c9df406f 1993 return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
1da177e4
LT		 1994}
1995
c9df406f 1996static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
1da177e4 1997{
89df5fdc
LB		 1998 struct mv643xx_eth_private *mp = netdev_priv(dev);
1999
fc32b0e2 2000 if (new_mtu < 64 || new_mtu > 9500)
c9df406f 2001 return -EINVAL;
1da177e4 2002
c9df406f 2003 dev->mtu = new_mtu;
89df5fdc
LB		 2004 tx_set_rate(mp, 1000000000, 16777216);
2005
c9df406f
LB		 2006 if (!netif_running(dev))
2007 return 0;
1da177e4 2008
c9df406f
LB		 2009 /*
2010 * Stop and then re-open the interface. This will allocate RX
2011 * skbs of the new MTU.
2012 * There is a possible danger that the open will not succeed,
fc32b0e2 2013 * due to memory being full.
c9df406f
LB		 2014 */
2015 mv643xx_eth_stop(dev);
2016 if (mv643xx_eth_open(dev)) {
fc32b0e2
LB		 2017 dev_printk(KERN_ERR, &dev->dev,
2018 "fatal error on re-opening device after "
2019 "MTU change\n");
c9df406f
LB		 2020 }
2021
2022 return 0;
1da177e4
LT		 2023}
2024
fc32b0e2 2025static void tx_timeout_task(struct work_struct *ugly)
1da177e4 2026{
fc32b0e2 2027 struct mv643xx_eth_private *mp;
1da177e4 2028
fc32b0e2
LB		 2029 mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
2030 if (netif_running(mp->dev)) {
2031 netif_stop_queue(mp->dev);
c9df406f 2032
fc32b0e2
LB		 2033 port_reset(mp);
2034 port_start(mp);
c9df406f 2035
3d6b35bc 2036 __txq_maybe_wake(mp->txq + mp->txq_primary);
fc32b0e2 2037 }
c9df406f
LB		 2038}
2039
c9df406f 2040static void mv643xx_eth_tx_timeout(struct net_device *dev)
1da177e4 2041{
e5371493 2042 struct mv643xx_eth_private *mp = netdev_priv(dev);
1da177e4 2043
fc32b0e2 2044 dev_printk(KERN_INFO, &dev->dev, "tx timeout\n");
d0412d96 2045
c9df406f 2046 schedule_work(&mp->tx_timeout_task);
1da177e4
LT		 2047}
2048
c9df406f 2049#ifdef CONFIG_NET_POLL_CONTROLLER
fc32b0e2 2050static void mv643xx_eth_netpoll(struct net_device *dev)
9f8dd319 2051{
fc32b0e2 2052 struct mv643xx_eth_private *mp = netdev_priv(dev);
c9df406f 2053
fc32b0e2
LB		 2054 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
2055 rdl(mp, INT_MASK(mp->port_num));
c9df406f 2056
fc32b0e2 2057 mv643xx_eth_irq(dev->irq, dev);
c9df406f 2058
226bb6b7 2059 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_CAUSE_EXT);
9f8dd319 2060}
c9df406f 2061#endif
9f8dd319 2062
fc32b0e2 2063static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg)
9f8dd319 2064{
e5371493 2065 struct mv643xx_eth_private *mp = netdev_priv(dev);
c9df406f
LB		 2066 int val;
2067
fc32b0e2
LB		 2068 smi_reg_read(mp, addr, reg, &val);
2069
c9df406f 2070 return val;
9f8dd319
DF		 2071}
2072
fc32b0e2 2073static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val)
9f8dd319 2074{
e5371493 2075 struct mv643xx_eth_private *mp = netdev_priv(dev);
fc32b0e2 2076 smi_reg_write(mp, addr, reg, val);
c9df406f 2077}
9f8dd319 2078
9f8dd319 2079
c9df406f 2080/* platform glue ************************************************************/
e5371493
LB		 2081static void
2082mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
2083 struct mbus_dram_target_info *dram)
c9df406f 2084{
cc9754b3 2085 void __iomem *base = msp->base;
c9df406f
LB		 2086 u32 win_enable;
2087 u32 win_protect;
2088 int i;
9f8dd319 2089
c9df406f
LB		 2090 for (i = 0; i < 6; i++) {
2091 writel(0, base + WINDOW_BASE(i));
2092 writel(0, base + WINDOW_SIZE(i));
2093 if (i < 4)
2094 writel(0, base + WINDOW_REMAP_HIGH(i));
9f8dd319
DF		 2095 }
2096
c9df406f
LB		 2097 win_enable = 0x3f;
2098 win_protect = 0;
2099
2100 for (i = 0; i < dram->num_cs; i++) {
2101 struct mbus_dram_window *cs = dram->cs + i;
2102
2103 writel((cs->base & 0xffff0000) |
2104 (cs->mbus_attr << 8) |
2105 dram->mbus_dram_target_id, base + WINDOW_BASE(i));
2106 writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
2107
2108 win_enable &= ~(1 << i);
2109 win_protect |= 3 << (2 * i);
2110 }
2111
2112 writel(win_enable, base + WINDOW_BAR_ENABLE);
2113 msp->win_protect = win_protect;
9f8dd319
DF		 2114}
2115
773fc3ee
LB		 2116static void infer_hw_params(struct mv643xx_eth_shared_private *msp)
2117{
2118 /*
2119 * Check whether we have a 14-bit coal limit field in bits
2120 * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
2121 * SDMA config register.
2122 */
2123 writel(0x02000000, msp->base + SDMA_CONFIG(0));
2124 if (readl(msp->base + SDMA_CONFIG(0)) & 0x02000000)
2125 msp->extended_rx_coal_limit = 1;
2126 else
2127 msp->extended_rx_coal_limit = 0;
1e881592
LB		 2128
2129 /*
2130 * Check whether the TX rate control registers are in the
2131 * old or the new place.
2132 */
2133 writel(1, msp->base + TX_BW_MTU_MOVED(0));
2134 if (readl(msp->base + TX_BW_MTU_MOVED(0)) & 1)
2135 msp->tx_bw_control_moved = 1;
2136 else
2137 msp->tx_bw_control_moved = 0;
773fc3ee
LB		 2138}
2139
c9df406f 2140static int mv643xx_eth_shared_probe(struct platform_device *pdev)
9f8dd319 2141{
e5371493 2142 static int mv643xx_eth_version_printed = 0;
c9df406f 2143 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
e5371493 2144 struct mv643xx_eth_shared_private *msp;
c9df406f
LB		 2145 struct resource *res;
2146 int ret;
9f8dd319 2147
e5371493 2148 if (!mv643xx_eth_version_printed++)
c9df406f 2149 printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
9f8dd319 2150
c9df406f
LB		 2151 ret = -EINVAL;
2152 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2153 if (res == NULL)
2154 goto out;
9f8dd319 2155
c9df406f
LB		 2156 ret = -ENOMEM;
2157 msp = kmalloc(sizeof(*msp), GFP_KERNEL);
2158 if (msp == NULL)
2159 goto out;
2160 memset(msp, 0, sizeof(*msp));
2161
cc9754b3
LB		 2162 msp->base = ioremap(res->start, res->end - res->start + 1);
2163 if (msp->base == NULL)
c9df406f
LB		 2164 goto out_free;
2165
2166 spin_lock_init(&msp->phy_lock);
c9df406f
LB		 2167
2168 /*
2169 * (Re-)program MBUS remapping windows if we are asked to.
2170 */
2171 if (pd != NULL && pd->dram != NULL)
2172 mv643xx_eth_conf_mbus_windows(msp, pd->dram);
2173
fc32b0e2
LB		 2174 /*
2175 * Detect hardware parameters.
2176 */
2177 msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
773fc3ee 2178 infer_hw_params(msp);
fc32b0e2
LB		 2179
2180 platform_set_drvdata(pdev, msp);
2181
c9df406f
LB		 2182 return 0;
2183
2184out_free:
2185 kfree(msp);
2186out:
2187 return ret;
2188}
2189
2190static int mv643xx_eth_shared_remove(struct platform_device *pdev)
2191{
e5371493 2192 struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
c9df406f 2193
cc9754b3 2194 iounmap(msp->base);
c9df406f
LB		 2195 kfree(msp);
2196
2197 return 0;
9f8dd319
DF		 2198}
2199
c9df406f 2200static struct platform_driver mv643xx_eth_shared_driver = {
fc32b0e2
LB		 2201 .probe = mv643xx_eth_shared_probe,
2202 .remove = mv643xx_eth_shared_remove,
c9df406f 2203 .driver = {
fc32b0e2 2204 .name = MV643XX_ETH_SHARED_NAME,
c9df406f
LB		 2205 .owner = THIS_MODULE,
2206 },
2207};
2208
e5371493 2209static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
1da177e4 2210{
c9df406f 2211 int addr_shift = 5 * mp->port_num;
fc32b0e2 2212 u32 data;
1da177e4 2213
fc32b0e2
LB		 2214 data = rdl(mp, PHY_ADDR);
2215 data &= ~(0x1f << addr_shift);
2216 data |= (phy_addr & 0x1f) << addr_shift;
2217 wrl(mp, PHY_ADDR, data);
1da177e4
LT		 2218}
2219
e5371493 2220static int phy_addr_get(struct mv643xx_eth_private *mp)
1da177e4 2221{
fc32b0e2
LB		 2222 unsigned int data;
2223
2224 data = rdl(mp, PHY_ADDR);
2225
2226 return (data >> (5 * mp->port_num)) & 0x1f;
2227}
2228
2229static void set_params(struct mv643xx_eth_private *mp,
2230 struct mv643xx_eth_platform_data *pd)
2231{
2232 struct net_device *dev = mp->dev;
2233
2234 if (is_valid_ether_addr(pd->mac_addr))
2235 memcpy(dev->dev_addr, pd->mac_addr, 6);
2236 else
2237 uc_addr_get(mp, dev->dev_addr);
2238
2239 if (pd->phy_addr == -1) {
2240 mp->shared_smi = NULL;
2241 mp->phy_addr = -1;
2242 } else {
2243 mp->shared_smi = mp->shared;
2244 if (pd->shared_smi != NULL)
2245 mp->shared_smi = platform_get_drvdata(pd->shared_smi);
2246
2247 if (pd->force_phy_addr || pd->phy_addr) {
2248 mp->phy_addr = pd->phy_addr & 0x3f;
2249 phy_addr_set(mp, mp->phy_addr);
2250 } else {
2251 mp->phy_addr = phy_addr_get(mp);
2252 }
2253 }
1da177e4 2254
fc32b0e2
LB		 2255 mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
2256 if (pd->rx_queue_size)
2257 mp->default_rx_ring_size = pd->rx_queue_size;
2258 mp->rx_desc_sram_addr = pd->rx_sram_addr;
2259 mp->rx_desc_sram_size = pd->rx_sram_size;
1da177e4 2260
64da80a2
LB		 2261 if (pd->rx_queue_mask)
2262 mp->rxq_mask = pd->rx_queue_mask;
2263 else
2264 mp->rxq_mask = 0x01;
2265 mp->rxq_primary = fls(mp->rxq_mask) - 1;
2266
fc32b0e2
LB		 2267 mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
2268 if (pd->tx_queue_size)
2269 mp->default_tx_ring_size = pd->tx_queue_size;
2270 mp->tx_desc_sram_addr = pd->tx_sram_addr;
2271 mp->tx_desc_sram_size = pd->tx_sram_size;
3d6b35bc
LB		 2272
2273 if (pd->tx_queue_mask)
2274 mp->txq_mask = pd->tx_queue_mask;
2275 else
2276 mp->txq_mask = 0x01;
2277 mp->txq_primary = fls(mp->txq_mask) - 1;
1da177e4
LT		 2278}
2279
e5371493 2280static int phy_detect(struct mv643xx_eth_private *mp)
1da177e4 2281{
fc32b0e2
LB		 2282 unsigned int data;
2283 unsigned int data2;
2284
2285 smi_reg_read(mp, mp->phy_addr, 0, &data);
2286 smi_reg_write(mp, mp->phy_addr, 0, data ^ 0x1000);
1da177e4 2287
fc32b0e2
LB		 2288 smi_reg_read(mp, mp->phy_addr, 0, &data2);
2289 if (((data ^ data2) & 0x1000) == 0)
2290 return -ENODEV;
1da177e4 2291
fc32b0e2 2292 smi_reg_write(mp, mp->phy_addr, 0, data);
1da177e4 2293
c9df406f 2294 return 0;
1da177e4
LT		 2295}
2296
fc32b0e2
LB		 2297static int phy_init(struct mv643xx_eth_private *mp,
2298 struct mv643xx_eth_platform_data *pd)
c28a4f89 2299{
fc32b0e2
LB		 2300 struct ethtool_cmd cmd;
2301 int err;
c28a4f89 2302
fc32b0e2
LB		 2303 err = phy_detect(mp);
2304 if (err) {
2305 dev_printk(KERN_INFO, &mp->dev->dev,
2306 "no PHY detected at addr %d\n", mp->phy_addr);
2307 return err;
2308 }
2309 phy_reset(mp);
2310
2311 mp->mii.phy_id = mp->phy_addr;
2312 mp->mii.phy_id_mask = 0x3f;
2313 mp->mii.reg_num_mask = 0x1f;
2314 mp->mii.dev = mp->dev;
2315 mp->mii.mdio_read = mv643xx_eth_mdio_read;
2316 mp->mii.mdio_write = mv643xx_eth_mdio_write;
c28a4f89 2317
fc32b0e2 2318 mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
c9df406f 2319
fc32b0e2
LB		 2320 memset(&cmd, 0, sizeof(cmd));
2321
2322 cmd.port = PORT_MII;
2323 cmd.transceiver = XCVR_INTERNAL;
2324 cmd.phy_address = mp->phy_addr;
2325 if (pd->speed == 0) {
2326 cmd.autoneg = AUTONEG_ENABLE;
2327 cmd.speed = SPEED_100;
2328 cmd.advertising = ADVERTISED_10baseT_Half |
2329 ADVERTISED_10baseT_Full |
2330 ADVERTISED_100baseT_Half |
2331 ADVERTISED_100baseT_Full;
c9df406f 2332 if (mp->mii.supports_gmii)
fc32b0e2 2333 cmd.advertising |= ADVERTISED_1000baseT_Full;
c9df406f 2334 } else {
fc32b0e2
LB		 2335 cmd.autoneg = AUTONEG_DISABLE;
2336 cmd.speed = pd->speed;
2337 cmd.duplex = pd->duplex;
c9df406f 2338 }
fc32b0e2
LB		 2339
2340 update_pscr(mp, cmd.speed, cmd.duplex);
2341 mv643xx_eth_set_settings(mp->dev, &cmd);
2342
2343 return 0;
c28a4f89
JC		 2344}
2345
c9df406f 2346static int mv643xx_eth_probe(struct platform_device *pdev)
1da177e4 2347{
c9df406f 2348 struct mv643xx_eth_platform_data *pd;
e5371493 2349 struct mv643xx_eth_private *mp;
c9df406f 2350 struct net_device *dev;
c9df406f 2351 struct resource *res;
c9df406f 2352 DECLARE_MAC_BUF(mac);
fc32b0e2 2353 int err;
1da177e4 2354
c9df406f
LB		 2355 pd = pdev->dev.platform_data;
2356 if (pd == NULL) {
fc32b0e2
LB		 2357 dev_printk(KERN_ERR, &pdev->dev,
2358 "no mv643xx_eth_platform_data\n");
c9df406f
LB		 2359 return -ENODEV;
2360 }
1da177e4 2361
c9df406f 2362 if (pd->shared == NULL) {
fc32b0e2
LB		 2363 dev_printk(KERN_ERR, &pdev->dev,
2364 "no mv643xx_eth_platform_data->shared\n");
c9df406f
LB		 2365 return -ENODEV;
2366 }
8f518703 2367
e5371493 2368 dev = alloc_etherdev(sizeof(struct mv643xx_eth_private));
c9df406f
LB		 2369 if (!dev)
2370 return -ENOMEM;
1da177e4 2371
c9df406f 2372 mp = netdev_priv(dev);
fc32b0e2
LB		 2373 platform_set_drvdata(pdev, mp);
2374
2375 mp->shared = platform_get_drvdata(pd->shared);
2376 mp->port_num = pd->port_number;
2377
c9df406f 2378 mp->dev = dev;
e5371493
LB		 2379#ifdef MV643XX_ETH_NAPI
2380 netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64);
c9df406f 2381#endif
1da177e4 2382
fc32b0e2
LB		 2383 set_params(mp, pd);
2384
2385 spin_lock_init(&mp->lock);
2386
2387 mib_counters_clear(mp);
2388 INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
2389
2390 err = phy_init(mp, pd);
2391 if (err)
2392 goto out;
2393 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
2394
2395
c9df406f
LB		 2396 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2397 BUG_ON(!res);
2398 dev->irq = res->start;
1da177e4 2399
fc32b0e2 2400 dev->hard_start_xmit = mv643xx_eth_xmit;
c9df406f
LB		 2401 dev->open = mv643xx_eth_open;
2402 dev->stop = mv643xx_eth_stop;
c9df406f 2403 dev->set_multicast_list = mv643xx_eth_set_rx_mode;
fc32b0e2
LB		 2404 dev->set_mac_address = mv643xx_eth_set_mac_address;
2405 dev->do_ioctl = mv643xx_eth_ioctl;
2406 dev->change_mtu = mv643xx_eth_change_mtu;
c9df406f 2407 dev->tx_timeout = mv643xx_eth_tx_timeout;
c9df406f 2408#ifdef CONFIG_NET_POLL_CONTROLLER
e5371493 2409 dev->poll_controller = mv643xx_eth_netpoll;
c9df406f 2410#endif
c9df406f
LB		 2411 dev->watchdog_timeo = 2 * HZ;
2412 dev->base_addr = 0;
1da177e4 2413
e5371493 2414#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
b4de9051 2415 /*
c9df406f
LB		 2416 * Zero copy can only work if we use Discovery II memory. Else, we will
2417 * have to map the buffers to ISA memory which is only 16 MB
b4de9051 2418 */
c9df406f 2419 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
c9df406f 2420#endif
1da177e4 2421
fc32b0e2 2422 SET_NETDEV_DEV(dev, &pdev->dev);
8f518703 2423
c9df406f 2424 if (mp->shared->win_protect)
fc32b0e2 2425 wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
1da177e4 2426
c9df406f
LB		 2427 err = register_netdev(dev);
2428 if (err)
2429 goto out;
1da177e4 2430
fc32b0e2
LB		 2431 dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n",
2432 mp->port_num, print_mac(mac, dev->dev_addr));
1da177e4 2433
c9df406f 2434 if (dev->features & NETIF_F_SG)
fc32b0e2 2435 dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n");
1da177e4 2436
c9df406f 2437 if (dev->features & NETIF_F_IP_CSUM)
fc32b0e2 2438 dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n");
1da177e4 2439
e5371493 2440#ifdef MV643XX_ETH_NAPI
fc32b0e2 2441 dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n");
c9df406f 2442#endif
1da177e4 2443
13d64285 2444 if (mp->tx_desc_sram_size > 0)
fc32b0e2 2445 dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");
1da177e4 2446
c9df406f 2447 return 0;
1da177e4 2448
c9df406f
LB		 2449out:
2450 free_netdev(dev);
1da177e4 2451
c9df406f 2452 return err;
1da177e4
LT		 2453}
2454
c9df406f 2455static int mv643xx_eth_remove(struct platform_device *pdev)
1da177e4 2456{
fc32b0e2 2457 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
1da177e4 2458
fc32b0e2 2459 unregister_netdev(mp->dev);
c9df406f 2460 flush_scheduled_work();
fc32b0e2 2461 free_netdev(mp->dev);
c9df406f 2462
c9df406f 2463 platform_set_drvdata(pdev, NULL);
fc32b0e2 2464
c9df406f 2465 return 0;
1da177e4
LT		 2466}
2467
c9df406f 2468static void mv643xx_eth_shutdown(struct platform_device *pdev)
d0412d96 2469{
fc32b0e2 2470 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
d0412d96 2471
c9df406f 2472 /* Mask all interrupts on ethernet port */
fc32b0e2
LB		 2473 wrl(mp, INT_MASK(mp->port_num), 0);
2474 rdl(mp, INT_MASK(mp->port_num));
c9df406f 2475
fc32b0e2
LB		 2476 if (netif_running(mp->dev))
2477 port_reset(mp);
d0412d96
JC		 2478}
2479
c9df406f 2480static struct platform_driver mv643xx_eth_driver = {
fc32b0e2
LB		 2481 .probe = mv643xx_eth_probe,
2482 .remove = mv643xx_eth_remove,
2483 .shutdown = mv643xx_eth_shutdown,
c9df406f 2484 .driver = {
fc32b0e2 2485 .name = MV643XX_ETH_NAME,
c9df406f
LB		 2486 .owner = THIS_MODULE,
2487 },
2488};
2489
e5371493 2490static int __init mv643xx_eth_init_module(void)
d0412d96 2491{
c9df406f 2492 int rc;
d0412d96 2493
c9df406f
LB		 2494 rc = platform_driver_register(&mv643xx_eth_shared_driver);
2495 if (!rc) {
2496 rc = platform_driver_register(&mv643xx_eth_driver);
2497 if (rc)
2498 platform_driver_unregister(&mv643xx_eth_shared_driver);
2499 }
fc32b0e2 2500
c9df406f 2501 return rc;
d0412d96 2502}
fc32b0e2 2503module_init(mv643xx_eth_init_module);
d0412d96 2504
e5371493 2505static void __exit mv643xx_eth_cleanup_module(void)
d0412d96 2506{
c9df406f
LB		 2507 platform_driver_unregister(&mv643xx_eth_driver);
2508 platform_driver_unregister(&mv643xx_eth_shared_driver);
d0412d96 2509}
e5371493 2510module_exit(mv643xx_eth_cleanup_module);
1da177e4 2511
fc32b0e2
LB		 2512MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani "
2513 "and Dale Farnsworth");
c9df406f 2514MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
fc32b0e2 2515MODULE_LICENSE("GPL");
c9df406f 2516MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
fc32b0e2 2517MODULE_ALIAS("platform:" MV643XX_ETH_NAME);
Clone of davem's net-next-2.6 tree