blob: b0bc3bc18e9cdffc808a9957e964f4c81e530954 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Lennert Buytenhek9c1bbdf2007-10-19 04:11:03 +02002 * Driver for Marvell Discovery (MV643XX) and Marvell Orion ethernet ports
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 * Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com>
4 *
5 * Based on the 64360 driver from:
Lennert Buytenhek4547fa62008-03-18 11:40:14 -07006 * Copyright (C) 2002 Rabeeh Khoury <rabeeh@galileo.co.il>
7 * Rabeeh Khoury <rabeeh@marvell.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 *
9 * Copyright (C) 2003 PMC-Sierra, Inc.,
Olaf Hering3bb8a182006-01-05 22:45:45 -080010 * written by Manish Lachwani
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 *
12 * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org>
13 *
Dale Farnsworthc8aaea22006-03-03 10:02:05 -070014 * Copyright (C) 2004-2006 MontaVista Software, Inc.
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 * Dale Farnsworth <dale@farnsworth.org>
16 *
17 * Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com>
18 * <sjhill@realitydiluted.com>
19 *
Lennert Buytenhek4547fa62008-03-18 11:40:14 -070020 * Copyright (C) 2007-2008 Marvell Semiconductor
21 * Lennert Buytenhek <buytenh@marvell.com>
22 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 * 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 */
Lennert Buytenheka779d382008-06-01 00:54:05 +020037
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include <linux/init.h>
39#include <linux/dma-mapping.h>
Al Virob6298c22006-01-18 19:35:54 -050040#include <linux/in.h>
Lennert Buytenhekc3efab82008-10-02 00:52:39 +000041#include <linux/ip.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <linux/tcp.h>
43#include <linux/udp.h>
44#include <linux/etherdevice.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <linux/delay.h>
46#include <linux/ethtool.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010047#include <linux/platform_device.h>
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020048#include <linux/module.h>
49#include <linux/kernel.h>
50#include <linux/spinlock.h>
51#include <linux/workqueue.h>
Lennert Buytenheked944932008-08-26 13:34:19 +020052#include <linux/phy.h>
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020053#include <linux/mv643xx_eth.h>
Lennert Buytenhek10a99482008-11-20 03:57:16 -080054#include <linux/io.h>
55#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070056#include <asm/system.h>
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020057
Lennert Buytenheke5371492008-06-01 02:18:13 +020058static char mv643xx_eth_driver_name[] = "mv643xx_eth";
Lennert Buytenhek042af532008-08-24 09:01:57 +020059static char mv643xx_eth_driver_version[] = "1.4";
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +020060
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020061
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020062/*
63 * Registers shared between all ports.
64 */
Lennert Buytenhek3cb46672008-06-01 01:03:23 +020065#define PHY_ADDR 0x0000
66#define SMI_REG 0x0004
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +020067#define SMI_BUSY 0x10000000
68#define SMI_READ_VALID 0x08000000
69#define SMI_OPCODE_READ 0x04000000
70#define SMI_OPCODE_WRITE 0x00000000
71#define ERR_INT_CAUSE 0x0080
72#define ERR_INT_SMI_DONE 0x00000010
73#define ERR_INT_MASK 0x0084
Lennert Buytenhek3cb46672008-06-01 01:03:23 +020074#define WINDOW_BASE(w) (0x0200 + ((w) << 3))
75#define WINDOW_SIZE(w) (0x0204 + ((w) << 3))
76#define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2))
77#define WINDOW_BAR_ENABLE 0x0290
78#define WINDOW_PROTECT(w) (0x0294 + ((w) << 4))
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020079
80/*
Lennert Buytenhek37a60842008-11-20 03:57:36 -080081 * Main per-port registers. These live at offset 0x0400 for
82 * port #0, 0x0800 for port #1, and 0x0c00 for port #2.
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020083 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -080084#define PORT_CONFIG 0x0000
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +020085#define UNICAST_PROMISCUOUS_MODE 0x00000001
Lennert Buytenhek37a60842008-11-20 03:57:36 -080086#define PORT_CONFIG_EXT 0x0004
87#define MAC_ADDR_LOW 0x0014
88#define MAC_ADDR_HIGH 0x0018
89#define SDMA_CONFIG 0x001c
90#define PORT_SERIAL_CONTROL 0x003c
91#define PORT_STATUS 0x0044
Lennert Buytenheka2a41682008-06-01 01:30:42 +020092#define TX_FIFO_EMPTY 0x00000400
Lennert Buytenhekae9ae062008-07-15 02:15:24 +020093#define TX_IN_PROGRESS 0x00000080
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +020094#define PORT_SPEED_MASK 0x00000030
95#define PORT_SPEED_1000 0x00000010
96#define PORT_SPEED_100 0x00000020
97#define PORT_SPEED_10 0x00000000
98#define FLOW_CONTROL_ENABLED 0x00000008
99#define FULL_DUPLEX 0x00000004
Lennert Buytenhek81600eea92008-07-14 14:29:40 +0200100#define LINK_UP 0x00000002
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800101#define TXQ_COMMAND 0x0048
102#define TXQ_FIX_PRIO_CONF 0x004c
103#define TX_BW_RATE 0x0050
104#define TX_BW_MTU 0x0058
105#define TX_BW_BURST 0x005c
106#define INT_CAUSE 0x0060
Lennert Buytenhek226bb6b2008-06-02 01:47:21 +0200107#define INT_TX_END 0x07f80000
Lennert Buytenhekbefefe22008-08-28 06:10:04 +0200108#define INT_RX 0x000003fc
Lennert Buytenhek073a3452008-06-01 02:00:31 +0200109#define INT_EXT 0x00000002
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800110#define INT_CAUSE_EXT 0x0064
Lennert Buytenhekbefefe22008-08-28 06:10:04 +0200111#define INT_EXT_LINK_PHY 0x00110000
112#define INT_EXT_TX 0x000000ff
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800113#define INT_MASK 0x0068
114#define INT_MASK_EXT 0x006c
115#define TX_FIFO_URGENT_THRESHOLD 0x0074
116#define TXQ_FIX_PRIO_CONF_MOVED 0x00dc
117#define TX_BW_RATE_MOVED 0x00e0
118#define TX_BW_MTU_MOVED 0x00e8
119#define TX_BW_BURST_MOVED 0x00ec
120#define RXQ_CURRENT_DESC_PTR(q) (0x020c + ((q) << 4))
121#define RXQ_COMMAND 0x0280
122#define TXQ_CURRENT_DESC_PTR(q) (0x02c0 + ((q) << 2))
123#define TXQ_BW_TOKENS(q) (0x0300 + ((q) << 4))
124#define TXQ_BW_CONF(q) (0x0304 + ((q) << 4))
125#define TXQ_BW_WRR_CONF(q) (0x0308 + ((q) << 4))
126
127/*
128 * Misc per-port registers.
129 */
Lennert Buytenhek3cb46672008-06-01 01:03:23 +0200130#define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
131#define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
132#define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
133#define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200134
Lennert Buytenhek2679a552008-06-01 01:18:58 +0200135
136/*
137 * SDMA configuration register.
138 */
Lennert Buytenheke0c6ef92009-01-19 17:16:00 -0800139#define RX_BURST_SIZE_4_64BIT (2 << 1)
Lennert Buytenhekcd4ccf72008-07-10 14:40:51 +0200140#define RX_BURST_SIZE_16_64BIT (4 << 1)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200141#define BLM_RX_NO_SWAP (1 << 4)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200142#define BLM_TX_NO_SWAP (1 << 5)
Lennert Buytenheke0c6ef92009-01-19 17:16:00 -0800143#define TX_BURST_SIZE_4_64BIT (2 << 22)
Lennert Buytenhekcd4ccf72008-07-10 14:40:51 +0200144#define TX_BURST_SIZE_16_64BIT (4 << 22)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200145
146#if defined(__BIG_ENDIAN)
147#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
Lennert Buytenheke0c6ef92009-01-19 17:16:00 -0800148 (RX_BURST_SIZE_4_64BIT | \
149 TX_BURST_SIZE_4_64BIT)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200150#elif defined(__LITTLE_ENDIAN)
151#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
Lennert Buytenheke0c6ef92009-01-19 17:16:00 -0800152 (RX_BURST_SIZE_4_64BIT | \
153 BLM_RX_NO_SWAP | \
154 BLM_TX_NO_SWAP | \
155 TX_BURST_SIZE_4_64BIT)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200156#else
157#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
158#endif
159
Lennert Buytenhek2beff772008-06-01 01:22:37 +0200160
161/*
162 * Port serial control register.
163 */
164#define SET_MII_SPEED_TO_100 (1 << 24)
165#define SET_GMII_SPEED_TO_1000 (1 << 23)
166#define SET_FULL_DUPLEX_MODE (1 << 21)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200167#define MAX_RX_PACKET_9700BYTE (5 << 17)
Lennert Buytenhek2beff772008-06-01 01:22:37 +0200168#define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
169#define DO_NOT_FORCE_LINK_FAIL (1 << 10)
170#define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
171#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
172#define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2)
173#define FORCE_LINK_PASS (1 << 1)
174#define SERIAL_PORT_ENABLE (1 << 0)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200175
Lennert Buytenhek2b4a6242008-09-14 14:09:59 +0200176#define DEFAULT_RX_QUEUE_SIZE 128
177#define DEFAULT_TX_QUEUE_SIZE 256
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200178
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200179
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200180/*
181 * RX/TX descriptors.
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200182 */
183#if defined(__BIG_ENDIAN)
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200184struct rx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200185 u16 byte_cnt; /* Descriptor buffer byte count */
186 u16 buf_size; /* Buffer size */
187 u32 cmd_sts; /* Descriptor command status */
188 u32 next_desc_ptr; /* Next descriptor pointer */
189 u32 buf_ptr; /* Descriptor buffer pointer */
190};
191
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200192struct tx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200193 u16 byte_cnt; /* buffer byte count */
194 u16 l4i_chk; /* CPU provided TCP checksum */
195 u32 cmd_sts; /* Command/status field */
196 u32 next_desc_ptr; /* Pointer to next descriptor */
197 u32 buf_ptr; /* pointer to buffer for this descriptor*/
198};
199#elif defined(__LITTLE_ENDIAN)
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200200struct rx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200201 u32 cmd_sts; /* Descriptor command status */
202 u16 buf_size; /* Buffer size */
203 u16 byte_cnt; /* Descriptor buffer byte count */
204 u32 buf_ptr; /* Descriptor buffer pointer */
205 u32 next_desc_ptr; /* Next descriptor pointer */
206};
207
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200208struct tx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200209 u32 cmd_sts; /* Command/status field */
210 u16 l4i_chk; /* CPU provided TCP checksum */
211 u16 byte_cnt; /* buffer byte count */
212 u32 buf_ptr; /* pointer to buffer for this descriptor*/
213 u32 next_desc_ptr; /* Pointer to next descriptor */
214};
215#else
216#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
217#endif
218
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200219/* RX & TX descriptor command */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200220#define BUFFER_OWNED_BY_DMA 0x80000000
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200221
222/* RX & TX descriptor status */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200223#define ERROR_SUMMARY 0x00000001
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200224
225/* RX descriptor status */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200226#define LAYER_4_CHECKSUM_OK 0x40000000
227#define RX_ENABLE_INTERRUPT 0x20000000
228#define RX_FIRST_DESC 0x08000000
229#define RX_LAST_DESC 0x04000000
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200230
231/* TX descriptor command */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200232#define TX_ENABLE_INTERRUPT 0x00800000
233#define GEN_CRC 0x00400000
234#define TX_FIRST_DESC 0x00200000
235#define TX_LAST_DESC 0x00100000
236#define ZERO_PADDING 0x00080000
237#define GEN_IP_V4_CHECKSUM 0x00040000
238#define GEN_TCP_UDP_CHECKSUM 0x00020000
239#define UDP_FRAME 0x00010000
Lennert Buytenheke32b6612008-07-24 06:22:59 +0200240#define MAC_HDR_EXTRA_4_BYTES 0x00008000
241#define MAC_HDR_EXTRA_8_BYTES 0x00000200
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200242
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200243#define TX_IHL_SHIFT 11
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200244
245
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200246/* global *******************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200247struct mv643xx_eth_shared_private {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200248 /*
249 * Ethernet controller base address.
250 */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200251 void __iomem *base;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200252
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200253 /*
Lennert Buytenhekfc0eb9f2008-08-26 12:56:56 +0200254 * Points at the right SMI instance to use.
255 */
256 struct mv643xx_eth_shared_private *smi;
257
258 /*
Lennert Buytenheked944932008-08-26 13:34:19 +0200259 * Provides access to local SMI interface.
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200260 */
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -0700261 struct mii_bus *smi_bus;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200262
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200263 /*
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +0200264 * If we have access to the error interrupt pin (which is
265 * somewhat misnamed as it not only reflects internal errors
266 * but also reflects SMI completion), use that to wait for
267 * SMI access completion instead of polling the SMI busy bit.
268 */
269 int err_interrupt;
270 wait_queue_head_t smi_busy_wait;
271
272 /*
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200273 * Per-port MBUS window access register value.
274 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200275 u32 win_protect;
276
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200277 /*
278 * Hardware-specific parameters.
279 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200280 unsigned int t_clk;
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +0200281 int extended_rx_coal_limit;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200282 int tx_bw_control;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200283};
284
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200285#define TX_BW_CONTROL_ABSENT 0
286#define TX_BW_CONTROL_OLD_LAYOUT 1
287#define TX_BW_CONTROL_NEW_LAYOUT 2
288
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200289
290/* per-port *****************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200291struct mib_counters {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200292 u64 good_octets_received;
293 u32 bad_octets_received;
294 u32 internal_mac_transmit_err;
295 u32 good_frames_received;
296 u32 bad_frames_received;
297 u32 broadcast_frames_received;
298 u32 multicast_frames_received;
299 u32 frames_64_octets;
300 u32 frames_65_to_127_octets;
301 u32 frames_128_to_255_octets;
302 u32 frames_256_to_511_octets;
303 u32 frames_512_to_1023_octets;
304 u32 frames_1024_to_max_octets;
305 u64 good_octets_sent;
306 u32 good_frames_sent;
307 u32 excessive_collision;
308 u32 multicast_frames_sent;
309 u32 broadcast_frames_sent;
310 u32 unrec_mac_control_received;
311 u32 fc_sent;
312 u32 good_fc_received;
313 u32 bad_fc_received;
314 u32 undersize_received;
315 u32 fragments_received;
316 u32 oversize_received;
317 u32 jabber_received;
318 u32 mac_receive_error;
319 u32 bad_crc_event;
320 u32 collision;
321 u32 late_collision;
322};
323
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200324struct rx_queue {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200325 int index;
326
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200327 int rx_ring_size;
328
329 int rx_desc_count;
330 int rx_curr_desc;
331 int rx_used_desc;
332
333 struct rx_desc *rx_desc_area;
334 dma_addr_t rx_desc_dma;
335 int rx_desc_area_size;
336 struct sk_buff **rx_skb;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200337};
338
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200339struct tx_queue {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200340 int index;
341
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200342 int tx_ring_size;
343
344 int tx_desc_count;
345 int tx_curr_desc;
346 int tx_used_desc;
347
348 struct tx_desc *tx_desc_area;
349 dma_addr_t tx_desc_dma;
350 int tx_desc_area_size;
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200351
352 struct sk_buff_head tx_skb;
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200353
354 unsigned long tx_packets;
355 unsigned long tx_bytes;
356 unsigned long tx_dropped;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200357};
358
Lennert Buytenheke5371492008-06-01 02:18:13 +0200359struct mv643xx_eth_private {
360 struct mv643xx_eth_shared_private *shared;
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800361 void __iomem *base;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200362 int port_num;
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200363
364 struct net_device *dev;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200365
Lennert Buytenheked944932008-08-26 13:34:19 +0200366 struct phy_device *phy;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200367
Lennert Buytenhek4ff34952008-09-19 05:04:57 +0200368 struct timer_list mib_counters_timer;
369 spinlock_t mib_counters_lock;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200370 struct mib_counters mib_counters;
Lennert Buytenhek4ff34952008-09-19 05:04:57 +0200371
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200372 struct work_struct tx_timeout_task;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200373
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200374 struct napi_struct napi;
375 u8 work_link;
376 u8 work_tx;
377 u8 work_tx_end;
378 u8 work_rx;
379 u8 work_rx_refill;
380 u8 work_rx_oom;
381
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700382 int skb_size;
383 struct sk_buff_head rx_recycle;
384
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200385 /*
386 * RX state.
387 */
388 int default_rx_ring_size;
389 unsigned long rx_desc_sram_addr;
390 int rx_desc_sram_size;
Lennert Buytenhekf7981c12008-08-26 10:23:22 +0200391 int rxq_count;
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200392 struct timer_list rx_oom;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200393 struct rx_queue rxq[8];
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200394
395 /*
396 * TX state.
397 */
398 int default_tx_ring_size;
399 unsigned long tx_desc_sram_addr;
400 int tx_desc_sram_size;
Lennert Buytenhekf7981c12008-08-26 10:23:22 +0200401 int txq_count;
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200402 struct tx_queue txq[8];
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200403};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200405
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200406/* port register accessors **************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200407static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408{
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200409 return readl(mp->shared->base + offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410}
411
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800412static inline u32 rdlp(struct mv643xx_eth_private *mp, int offset)
413{
414 return readl(mp->base + offset);
415}
416
Lennert Buytenheke5371492008-06-01 02:18:13 +0200417static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418{
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200419 writel(data, mp->shared->base + offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420}
421
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800422static inline void wrlp(struct mv643xx_eth_private *mp, int offset, u32 data)
423{
424 writel(data, mp->base + offset);
425}
426
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200427
428/* rxq/txq helper functions *************************************************/
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200429static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430{
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200431 return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200432}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200434static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
435{
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200436 return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200437}
438
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200439static void rxq_enable(struct rx_queue *rxq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200440{
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200441 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800442 wrlp(mp, RXQ_COMMAND, 1 << rxq->index);
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200443}
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700444
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200445static void rxq_disable(struct rx_queue *rxq)
446{
447 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200448 u8 mask = 1 << rxq->index;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200449
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800450 wrlp(mp, RXQ_COMMAND, mask << 8);
451 while (rdlp(mp, RXQ_COMMAND) & mask)
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200452 udelay(10);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200453}
454
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200455static void txq_reset_hw_ptr(struct tx_queue *txq)
456{
457 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200458 u32 addr;
459
460 addr = (u32)txq->tx_desc_dma;
461 addr += txq->tx_curr_desc * sizeof(struct tx_desc);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800462 wrlp(mp, TXQ_CURRENT_DESC_PTR(txq->index), addr);
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200463}
464
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200465static void txq_enable(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200466{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200467 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800468 wrlp(mp, TXQ_COMMAND, 1 << txq->index);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200469}
470
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200471static void txq_disable(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200472{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200473 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200474 u8 mask = 1 << txq->index;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200475
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800476 wrlp(mp, TXQ_COMMAND, mask << 8);
477 while (rdlp(mp, TXQ_COMMAND) & mask)
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200478 udelay(10);
479}
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200480
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200481static void txq_maybe_wake(struct tx_queue *txq)
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200482{
483 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200484 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200485
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200486 if (netif_tx_queue_stopped(nq)) {
487 __netif_tx_lock(nq, smp_processor_id());
488 if (txq->tx_ring_size - txq->tx_desc_count >= MAX_SKB_FRAGS + 1)
489 netif_tx_wake_queue(nq);
490 __netif_tx_unlock(nq);
491 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200492}
493
494
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200495/* rx napi ******************************************************************/
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200496static int rxq_process(struct rx_queue *rxq, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497{
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200498 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
499 struct net_device_stats *stats = &mp->dev->stats;
500 int rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200502 rx = 0;
Lennert Buytenhek9e1f3772008-08-24 02:33:47 +0200503 while (rx < budget && rxq->rx_desc_count) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200504 struct rx_desc *rx_desc;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200505 unsigned int cmd_sts;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200506 struct sk_buff *skb;
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200507 u16 byte_cnt;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200508
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200509 rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
Lennert Buytenhek96587662008-06-01 10:31:56 +0200510
511 cmd_sts = rx_desc->cmd_sts;
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200512 if (cmd_sts & BUFFER_OWNED_BY_DMA)
Lennert Buytenhek96587662008-06-01 10:31:56 +0200513 break;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200514 rmb();
515
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200516 skb = rxq->rx_skb[rxq->rx_curr_desc];
517 rxq->rx_skb[rxq->rx_curr_desc] = NULL;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200518
Lennert Buytenhek9da78742008-08-23 23:45:28 +0200519 rxq->rx_curr_desc++;
520 if (rxq->rx_curr_desc == rxq->rx_ring_size)
521 rxq->rx_curr_desc = 0;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200522
Lennert Buytenhek3a499482008-08-24 07:19:48 +0200523 dma_unmap_single(NULL, rx_desc->buf_ptr,
Lennert Buytenhekabe78712008-08-24 03:00:20 +0200524 rx_desc->buf_size, DMA_FROM_DEVICE);
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200525 rxq->rx_desc_count--;
526 rx++;
Dale Farnsworthb1dd9ca2005-09-01 09:59:23 -0700527
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200528 mp->work_rx_refill |= 1 << rxq->index;
529
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200530 byte_cnt = rx_desc->byte_cnt;
531
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700532 /*
533 * Update statistics.
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200534 *
535 * Note that the descriptor byte count includes 2 dummy
536 * bytes automatically inserted by the hardware at the
537 * start of the packet (which we don't count), and a 4
538 * byte CRC at the end of the packet (which we do count).
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700539 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 stats->rx_packets++;
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200541 stats->rx_bytes += byte_cnt - 2;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200542
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 /*
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200544 * In case we received a packet without first / last bits
545 * on, or the error summary bit is set, the packet needs
546 * to be dropped.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 */
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800548 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC | ERROR_SUMMARY))
549 != (RX_FIRST_DESC | RX_LAST_DESC))
550 goto err;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200551
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800552 /*
553 * The -4 is for the CRC in the trailer of the
554 * received packet
555 */
556 skb_put(skb, byte_cnt - 2 - 4);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200557
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800558 if (cmd_sts & LAYER_4_CHECKSUM_OK)
559 skb->ip_summed = CHECKSUM_UNNECESSARY;
560 skb->protocol = eth_type_trans(skb, mp->dev);
561 netif_receive_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800563 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800565err:
566 stats->rx_dropped++;
567
568 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
569 (RX_FIRST_DESC | RX_LAST_DESC)) {
570 if (net_ratelimit())
571 dev_printk(KERN_ERR, &mp->dev->dev,
572 "received packet spanning "
573 "multiple descriptors\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 }
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800575
576 if (cmd_sts & ERROR_SUMMARY)
577 stats->rx_errors++;
578
579 dev_kfree_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 }
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200581
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200582 if (rx < budget)
583 mp->work_rx &= ~(1 << rxq->index);
584
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200585 return rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586}
587
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200588static int rxq_refill(struct rx_queue *rxq, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589{
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200590 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200591 int refilled;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200592
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200593 refilled = 0;
594 while (refilled < budget && rxq->rx_desc_count < rxq->rx_ring_size) {
595 struct sk_buff *skb;
596 int unaligned;
597 int rx;
Lennert Buytenhek53771522008-11-20 03:59:04 -0800598 struct rx_desc *rx_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700600 skb = __skb_dequeue(&mp->rx_recycle);
601 if (skb == NULL)
602 skb = dev_alloc_skb(mp->skb_size +
603 dma_get_cache_alignment() - 1);
604
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200605 if (skb == NULL) {
606 mp->work_rx_oom |= 1 << rxq->index;
607 goto oom;
608 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200610 unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
611 if (unaligned)
612 skb_reserve(skb, dma_get_cache_alignment() - unaligned);
613
614 refilled++;
615 rxq->rx_desc_count++;
616
617 rx = rxq->rx_used_desc++;
618 if (rxq->rx_used_desc == rxq->rx_ring_size)
619 rxq->rx_used_desc = 0;
620
Lennert Buytenhek53771522008-11-20 03:59:04 -0800621 rx_desc = rxq->rx_desc_area + rx;
622
623 rx_desc->buf_ptr = dma_map_single(NULL, skb->data,
624 mp->skb_size, DMA_FROM_DEVICE);
625 rx_desc->buf_size = mp->skb_size;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200626 rxq->rx_skb[rx] = skb;
627 wmb();
Lennert Buytenhek53771522008-11-20 03:59:04 -0800628 rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200629 wmb();
630
631 /*
632 * The hardware automatically prepends 2 bytes of
633 * dummy data to each received packet, so that the
634 * IP header ends up 16-byte aligned.
635 */
636 skb_reserve(skb, 2);
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200637 }
638
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200639 if (refilled < budget)
640 mp->work_rx_refill &= ~(1 << rxq->index);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200642oom:
643 return refilled;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200646
647/* tx ***********************************************************************/
Paul Janzenf7ea3332006-01-16 16:52:13 -0700648static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
649{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200650 int frag;
Paul Janzenf7ea3332006-01-16 16:52:13 -0700651
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700652 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200653 skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
654 if (fragp->size <= 8 && fragp->page_offset & 7)
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700655 return 1;
656 }
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200657
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700658 return 0;
Paul Janzenf7ea3332006-01-16 16:52:13 -0700659}
660
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200661static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700662{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200663 int nr_frags = skb_shinfo(skb)->nr_frags;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700664 int frag;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700665
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200666 for (frag = 0; frag < nr_frags; frag++) {
667 skb_frag_t *this_frag;
668 int tx_index;
669 struct tx_desc *desc;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700670
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200671 this_frag = &skb_shinfo(skb)->frags[frag];
Lennert Buytenhek66823b92008-11-20 03:58:09 -0800672 tx_index = txq->tx_curr_desc++;
673 if (txq->tx_curr_desc == txq->tx_ring_size)
674 txq->tx_curr_desc = 0;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200675 desc = &txq->tx_desc_area[tx_index];
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700676
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200677 /*
678 * The last fragment will generate an interrupt
679 * which will free the skb on TX completion.
680 */
681 if (frag == nr_frags - 1) {
682 desc->cmd_sts = BUFFER_OWNED_BY_DMA |
683 ZERO_PADDING | TX_LAST_DESC |
684 TX_ENABLE_INTERRUPT;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200685 } else {
686 desc->cmd_sts = BUFFER_OWNED_BY_DMA;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200687 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700688
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700689 desc->l4i_chk = 0;
690 desc->byte_cnt = this_frag->size;
691 desc->buf_ptr = dma_map_page(NULL, this_frag->page,
692 this_frag->page_offset,
693 this_frag->size,
694 DMA_TO_DEVICE);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700695 }
696}
697
Byron Bradley324ff2c2008-02-04 23:47:15 -0800698static inline __be16 sum16_as_be(__sum16 sum)
699{
700 return (__force __be16)sum;
701}
702
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200703static int txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700704{
Lennert Buytenhek8fa89bf2008-07-14 22:56:55 +0200705 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200706 int nr_frags = skb_shinfo(skb)->nr_frags;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700707 int tx_index;
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200708 struct tx_desc *desc;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700709 u32 cmd_sts;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200710 u16 l4i_chk;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700711 int length;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700712
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200713 cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200714 l4i_chk = 0;
715
716 if (skb->ip_summed == CHECKSUM_PARTIAL) {
717 int tag_bytes;
718
719 BUG_ON(skb->protocol != htons(ETH_P_IP) &&
720 skb->protocol != htons(ETH_P_8021Q));
721
722 tag_bytes = (void *)ip_hdr(skb) - (void *)skb->data - ETH_HLEN;
723 if (unlikely(tag_bytes & ~12)) {
724 if (skb_checksum_help(skb) == 0)
725 goto no_csum;
726 kfree_skb(skb);
727 return 1;
728 }
729
730 if (tag_bytes & 4)
731 cmd_sts |= MAC_HDR_EXTRA_4_BYTES;
732 if (tag_bytes & 8)
733 cmd_sts |= MAC_HDR_EXTRA_8_BYTES;
734
735 cmd_sts |= GEN_TCP_UDP_CHECKSUM |
736 GEN_IP_V4_CHECKSUM |
737 ip_hdr(skb)->ihl << TX_IHL_SHIFT;
738
739 switch (ip_hdr(skb)->protocol) {
740 case IPPROTO_UDP:
741 cmd_sts |= UDP_FRAME;
742 l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
743 break;
744 case IPPROTO_TCP:
745 l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
746 break;
747 default:
748 BUG();
749 }
750 } else {
751no_csum:
752 /* Errata BTS #50, IHL must be 5 if no HW checksum */
753 cmd_sts |= 5 << TX_IHL_SHIFT;
754 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700755
Lennert Buytenhek66823b92008-11-20 03:58:09 -0800756 tx_index = txq->tx_curr_desc++;
757 if (txq->tx_curr_desc == txq->tx_ring_size)
758 txq->tx_curr_desc = 0;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200759 desc = &txq->tx_desc_area[tx_index];
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700760
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700761 if (nr_frags) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200762 txq_submit_frag_skb(txq, skb);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700763 length = skb_headlen(skb);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700764 } else {
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200765 cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700766 length = skb->len;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700767 }
768
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200769 desc->l4i_chk = l4i_chk;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700770 desc->byte_cnt = length;
771 desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700772
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200773 __skb_queue_tail(&txq->tx_skb, skb);
774
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700775 /* ensure all other descriptors are written before first cmd_sts */
776 wmb();
777 desc->cmd_sts = cmd_sts;
778
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200779 /* clear TX_END status */
780 mp->work_tx_end &= ~(1 << txq->index);
Lennert Buytenhek8fa89bf2008-07-14 22:56:55 +0200781
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700782 /* ensure all descriptors are written before poking hardware */
783 wmb();
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200784 txq_enable(txq);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700785
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200786 txq->tx_desc_count += nr_frags + 1;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200787
788 return 0;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700789}
790
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200791static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792{
Lennert Buytenheke5371492008-06-01 02:18:13 +0200793 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200794 int queue;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200795 struct tx_queue *txq;
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200796 struct netdev_queue *nq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200798 queue = skb_get_queue_mapping(skb);
799 txq = mp->txq + queue;
800 nq = netdev_get_tx_queue(dev, queue);
801
Lennert Buytenhek4d64e712008-03-18 11:32:41 -0700802 if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200803 txq->tx_dropped++;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200804 dev_printk(KERN_DEBUG, &dev->dev,
805 "failed to linearize skb with tiny "
806 "unaligned fragment\n");
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700807 return NETDEV_TX_BUSY;
Dale Farnsworth94843562006-04-11 18:24:26 -0700808 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809
Lennert Buytenhek17cd0a52008-08-24 05:33:55 +0200810 if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) {
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200811 if (net_ratelimit())
812 dev_printk(KERN_ERR, &dev->dev, "tx queue full?!\n");
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200813 kfree_skb(skb);
814 return NETDEV_TX_OK;
Lennert Buytenhek4d64e712008-03-18 11:32:41 -0700815 }
816
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200817 if (!txq_submit_skb(txq, skb)) {
818 int entries_left;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200820 txq->tx_bytes += skb->len;
821 txq->tx_packets++;
822 dev->trans_start = jiffies;
823
824 entries_left = txq->tx_ring_size - txq->tx_desc_count;
825 if (entries_left < MAX_SKB_FRAGS + 1)
826 netif_tx_stop_queue(nq);
827 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700828
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700829 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830}
831
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200832
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200833/* tx napi ******************************************************************/
834static void txq_kick(struct tx_queue *txq)
835{
836 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200837 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200838 u32 hw_desc_ptr;
839 u32 expected_ptr;
840
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200841 __netif_tx_lock(nq, smp_processor_id());
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200842
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800843 if (rdlp(mp, TXQ_COMMAND) & (1 << txq->index))
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200844 goto out;
845
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800846 hw_desc_ptr = rdlp(mp, TXQ_CURRENT_DESC_PTR(txq->index));
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200847 expected_ptr = (u32)txq->tx_desc_dma +
848 txq->tx_curr_desc * sizeof(struct tx_desc);
849
850 if (hw_desc_ptr != expected_ptr)
851 txq_enable(txq);
852
853out:
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200854 __netif_tx_unlock(nq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200855
856 mp->work_tx_end &= ~(1 << txq->index);
857}
858
859static int txq_reclaim(struct tx_queue *txq, int budget, int force)
860{
861 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200862 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200863 int reclaimed;
864
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200865 __netif_tx_lock(nq, smp_processor_id());
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200866
867 reclaimed = 0;
868 while (reclaimed < budget && txq->tx_desc_count > 0) {
869 int tx_index;
870 struct tx_desc *desc;
871 u32 cmd_sts;
872 struct sk_buff *skb;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200873
874 tx_index = txq->tx_used_desc;
875 desc = &txq->tx_desc_area[tx_index];
876 cmd_sts = desc->cmd_sts;
877
878 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
879 if (!force)
880 break;
881 desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA;
882 }
883
884 txq->tx_used_desc = tx_index + 1;
885 if (txq->tx_used_desc == txq->tx_ring_size)
886 txq->tx_used_desc = 0;
887
888 reclaimed++;
889 txq->tx_desc_count--;
890
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200891 skb = NULL;
892 if (cmd_sts & TX_LAST_DESC)
893 skb = __skb_dequeue(&txq->tx_skb);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200894
895 if (cmd_sts & ERROR_SUMMARY) {
896 dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
897 mp->dev->stats.tx_errors++;
898 }
899
Lennert Buytenheka4189502008-09-13 04:16:15 +0200900 if (cmd_sts & TX_FIRST_DESC) {
901 dma_unmap_single(NULL, desc->buf_ptr,
902 desc->byte_cnt, DMA_TO_DEVICE);
903 } else {
904 dma_unmap_page(NULL, desc->buf_ptr,
905 desc->byte_cnt, DMA_TO_DEVICE);
906 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200907
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700908 if (skb != NULL) {
909 if (skb_queue_len(&mp->rx_recycle) <
910 mp->default_rx_ring_size &&
Lennert Buytenhek11b4aa02008-11-18 04:28:58 +0000911 skb_recycle_check(skb, mp->skb_size +
912 dma_get_cache_alignment() - 1))
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700913 __skb_queue_head(&mp->rx_recycle, skb);
914 else
915 dev_kfree_skb(skb);
916 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200917 }
918
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200919 __netif_tx_unlock(nq);
920
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200921 if (reclaimed < budget)
922 mp->work_tx &= ~(1 << txq->index);
923
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200924 return reclaimed;
925}
926
927
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +0200928/* tx rate control **********************************************************/
929/*
930 * Set total maximum TX rate (shared by all TX queues for this port)
931 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
932 */
933static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
934{
935 int token_rate;
936 int mtu;
937 int bucket_size;
938
939 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
940 if (token_rate > 1023)
941 token_rate = 1023;
942
943 mtu = (mp->dev->mtu + 255) >> 8;
944 if (mtu > 63)
945 mtu = 63;
946
947 bucket_size = (burst + 255) >> 8;
948 if (bucket_size > 65535)
949 bucket_size = 65535;
950
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200951 switch (mp->shared->tx_bw_control) {
952 case TX_BW_CONTROL_OLD_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800953 wrlp(mp, TX_BW_RATE, token_rate);
954 wrlp(mp, TX_BW_MTU, mtu);
955 wrlp(mp, TX_BW_BURST, bucket_size);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200956 break;
957 case TX_BW_CONTROL_NEW_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800958 wrlp(mp, TX_BW_RATE_MOVED, token_rate);
959 wrlp(mp, TX_BW_MTU_MOVED, mtu);
960 wrlp(mp, TX_BW_BURST_MOVED, bucket_size);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200961 break;
Lennert Buytenhek1e881592008-06-02 01:57:36 +0200962 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +0200963}
964
965static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
966{
967 struct mv643xx_eth_private *mp = txq_to_mp(txq);
968 int token_rate;
969 int bucket_size;
970
971 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
972 if (token_rate > 1023)
973 token_rate = 1023;
974
975 bucket_size = (burst + 255) >> 8;
976 if (bucket_size > 65535)
977 bucket_size = 65535;
978
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800979 wrlp(mp, TXQ_BW_TOKENS(txq->index), token_rate << 14);
980 wrlp(mp, TXQ_BW_CONF(txq->index), (bucket_size << 10) | token_rate);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +0200981}
982
983static void txq_set_fixed_prio_mode(struct tx_queue *txq)
984{
985 struct mv643xx_eth_private *mp = txq_to_mp(txq);
986 int off;
987 u32 val;
988
989 /*
990 * Turn on fixed priority mode.
991 */
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200992 off = 0;
993 switch (mp->shared->tx_bw_control) {
994 case TX_BW_CONTROL_OLD_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800995 off = TXQ_FIX_PRIO_CONF;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200996 break;
997 case TX_BW_CONTROL_NEW_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800998 off = TXQ_FIX_PRIO_CONF_MOVED;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200999 break;
1000 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001001
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001002 if (off) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001003 val = rdlp(mp, off);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001004 val |= 1 << txq->index;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001005 wrlp(mp, off, val);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001006 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001007}
1008
1009static void txq_set_wrr(struct tx_queue *txq, int weight)
1010{
1011 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1012 int off;
1013 u32 val;
1014
1015 /*
1016 * Turn off fixed priority mode.
1017 */
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001018 off = 0;
1019 switch (mp->shared->tx_bw_control) {
1020 case TX_BW_CONTROL_OLD_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001021 off = TXQ_FIX_PRIO_CONF;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001022 break;
1023 case TX_BW_CONTROL_NEW_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001024 off = TXQ_FIX_PRIO_CONF_MOVED;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001025 break;
1026 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001027
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001028 if (off) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001029 val = rdlp(mp, off);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001030 val &= ~(1 << txq->index);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001031 wrlp(mp, off, val);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001032
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001033 /*
1034 * Configure WRR weight for this queue.
1035 */
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001036
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001037 val = rdlp(mp, off);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001038 val = (val & ~0xff) | (weight & 0xff);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001039 wrlp(mp, TXQ_BW_WRR_CONF(txq->index), val);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001040 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001041}
1042
1043
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001044/* mii management interface *************************************************/
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001045static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001046{
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001047 struct mv643xx_eth_shared_private *msp = dev_id;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001048
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001049 if (readl(msp->base + ERR_INT_CAUSE) & ERR_INT_SMI_DONE) {
1050 writel(~ERR_INT_SMI_DONE, msp->base + ERR_INT_CAUSE);
1051 wake_up(&msp->smi_busy_wait);
1052 return IRQ_HANDLED;
1053 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001054
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001055 return IRQ_NONE;
1056}
1057
1058static int smi_is_done(struct mv643xx_eth_shared_private *msp)
1059{
1060 return !(readl(msp->base + SMI_REG) & SMI_BUSY);
1061}
1062
1063static int smi_wait_ready(struct mv643xx_eth_shared_private *msp)
1064{
1065 if (msp->err_interrupt == NO_IRQ) {
1066 int i;
1067
1068 for (i = 0; !smi_is_done(msp); i++) {
1069 if (i == 10)
1070 return -ETIMEDOUT;
1071 msleep(10);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001072 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001073
1074 return 0;
1075 }
1076
Lennert Buytenhekee044482008-11-01 06:32:20 +01001077 if (!smi_is_done(msp)) {
1078 wait_event_timeout(msp->smi_busy_wait, smi_is_done(msp),
1079 msecs_to_jiffies(100));
1080 if (!smi_is_done(msp))
1081 return -ETIMEDOUT;
1082 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001083
1084 return 0;
1085}
1086
Lennert Buytenheked944932008-08-26 13:34:19 +02001087static int smi_bus_read(struct mii_bus *bus, int addr, int reg)
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001088{
Lennert Buytenheked944932008-08-26 13:34:19 +02001089 struct mv643xx_eth_shared_private *msp = bus->priv;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001090 void __iomem *smi_reg = msp->base + SMI_REG;
1091 int ret;
1092
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001093 if (smi_wait_ready(msp)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001094 printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001095 return -ETIMEDOUT;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001096 }
1097
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001098 writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001099
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001100 if (smi_wait_ready(msp)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001101 printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001102 return -ETIMEDOUT;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001103 }
1104
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001105 ret = readl(smi_reg);
1106 if (!(ret & SMI_READ_VALID)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001107 printk(KERN_WARNING "mv643xx_eth: SMI bus read not valid\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001108 return -ENODEV;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001109 }
1110
Lennert Buytenheked944932008-08-26 13:34:19 +02001111 return ret & 0xffff;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001112}
1113
Lennert Buytenheked944932008-08-26 13:34:19 +02001114static int smi_bus_write(struct mii_bus *bus, int addr, int reg, u16 val)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001115{
Lennert Buytenheked944932008-08-26 13:34:19 +02001116 struct mv643xx_eth_shared_private *msp = bus->priv;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001117 void __iomem *smi_reg = msp->base + SMI_REG;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001118
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001119 if (smi_wait_ready(msp)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001120 printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n");
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001121 return -ETIMEDOUT;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001122 }
1123
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001124 writel(SMI_OPCODE_WRITE | (reg << 21) |
Lennert Buytenheked944932008-08-26 13:34:19 +02001125 (addr << 16) | (val & 0xffff), smi_reg);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001126
Lennert Buytenheked944932008-08-26 13:34:19 +02001127 if (smi_wait_ready(msp)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001128 printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001129 return -ETIMEDOUT;
1130 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001131
1132 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001133}
1134
1135
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02001136/* statistics ***************************************************************/
1137static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev)
1138{
1139 struct mv643xx_eth_private *mp = netdev_priv(dev);
1140 struct net_device_stats *stats = &dev->stats;
1141 unsigned long tx_packets = 0;
1142 unsigned long tx_bytes = 0;
1143 unsigned long tx_dropped = 0;
1144 int i;
1145
1146 for (i = 0; i < mp->txq_count; i++) {
1147 struct tx_queue *txq = mp->txq + i;
1148
1149 tx_packets += txq->tx_packets;
1150 tx_bytes += txq->tx_bytes;
1151 tx_dropped += txq->tx_dropped;
1152 }
1153
1154 stats->tx_packets = tx_packets;
1155 stats->tx_bytes = tx_bytes;
1156 stats->tx_dropped = tx_dropped;
1157
1158 return stats;
1159}
1160
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001161static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001162{
Lennert Buytenhek3cb46672008-06-01 01:03:23 +02001163 return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001164}
1165
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001166static void mib_counters_clear(struct mv643xx_eth_private *mp)
1167{
1168 int i;
1169
1170 for (i = 0; i < 0x80; i += 4)
1171 mib_read(mp, i);
1172}
1173
1174static void mib_counters_update(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001175{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001176 struct mib_counters *p = &mp->mib_counters;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001177
Sebastian Siewior57e8f262009-02-16 11:28:15 +00001178 spin_lock_bh(&mp->mib_counters_lock);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001179 p->good_octets_received += mib_read(mp, 0x00);
1180 p->good_octets_received += (u64)mib_read(mp, 0x04) << 32;
1181 p->bad_octets_received += mib_read(mp, 0x08);
1182 p->internal_mac_transmit_err += mib_read(mp, 0x0c);
1183 p->good_frames_received += mib_read(mp, 0x10);
1184 p->bad_frames_received += mib_read(mp, 0x14);
1185 p->broadcast_frames_received += mib_read(mp, 0x18);
1186 p->multicast_frames_received += mib_read(mp, 0x1c);
1187 p->frames_64_octets += mib_read(mp, 0x20);
1188 p->frames_65_to_127_octets += mib_read(mp, 0x24);
1189 p->frames_128_to_255_octets += mib_read(mp, 0x28);
1190 p->frames_256_to_511_octets += mib_read(mp, 0x2c);
1191 p->frames_512_to_1023_octets += mib_read(mp, 0x30);
1192 p->frames_1024_to_max_octets += mib_read(mp, 0x34);
1193 p->good_octets_sent += mib_read(mp, 0x38);
1194 p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32;
1195 p->good_frames_sent += mib_read(mp, 0x40);
1196 p->excessive_collision += mib_read(mp, 0x44);
1197 p->multicast_frames_sent += mib_read(mp, 0x48);
1198 p->broadcast_frames_sent += mib_read(mp, 0x4c);
1199 p->unrec_mac_control_received += mib_read(mp, 0x50);
1200 p->fc_sent += mib_read(mp, 0x54);
1201 p->good_fc_received += mib_read(mp, 0x58);
1202 p->bad_fc_received += mib_read(mp, 0x5c);
1203 p->undersize_received += mib_read(mp, 0x60);
1204 p->fragments_received += mib_read(mp, 0x64);
1205 p->oversize_received += mib_read(mp, 0x68);
1206 p->jabber_received += mib_read(mp, 0x6c);
1207 p->mac_receive_error += mib_read(mp, 0x70);
1208 p->bad_crc_event += mib_read(mp, 0x74);
1209 p->collision += mib_read(mp, 0x78);
1210 p->late_collision += mib_read(mp, 0x7c);
Sebastian Siewior57e8f262009-02-16 11:28:15 +00001211 spin_unlock_bh(&mp->mib_counters_lock);
Lennert Buytenhek4ff34952008-09-19 05:04:57 +02001212
1213 mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ);
1214}
1215
1216static void mib_counters_timer_wrapper(unsigned long _mp)
1217{
1218 struct mv643xx_eth_private *mp = (void *)_mp;
1219
1220 mib_counters_update(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001221}
1222
1223
1224/* ethtool ******************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +02001225struct mv643xx_eth_stats {
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001226 char stat_string[ETH_GSTRING_LEN];
1227 int sizeof_stat;
Lennert Buytenhek16820052008-06-01 11:40:29 +02001228 int netdev_off;
1229 int mp_off;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001230};
1231
Lennert Buytenhek16820052008-06-01 11:40:29 +02001232#define SSTAT(m) \
1233 { #m, FIELD_SIZEOF(struct net_device_stats, m), \
1234 offsetof(struct net_device, stats.m), -1 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001235
Lennert Buytenhek16820052008-06-01 11:40:29 +02001236#define MIBSTAT(m) \
1237 { #m, FIELD_SIZEOF(struct mib_counters, m), \
1238 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1239
1240static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
1241 SSTAT(rx_packets),
1242 SSTAT(tx_packets),
1243 SSTAT(rx_bytes),
1244 SSTAT(tx_bytes),
1245 SSTAT(rx_errors),
1246 SSTAT(tx_errors),
1247 SSTAT(rx_dropped),
1248 SSTAT(tx_dropped),
1249 MIBSTAT(good_octets_received),
1250 MIBSTAT(bad_octets_received),
1251 MIBSTAT(internal_mac_transmit_err),
1252 MIBSTAT(good_frames_received),
1253 MIBSTAT(bad_frames_received),
1254 MIBSTAT(broadcast_frames_received),
1255 MIBSTAT(multicast_frames_received),
1256 MIBSTAT(frames_64_octets),
1257 MIBSTAT(frames_65_to_127_octets),
1258 MIBSTAT(frames_128_to_255_octets),
1259 MIBSTAT(frames_256_to_511_octets),
1260 MIBSTAT(frames_512_to_1023_octets),
1261 MIBSTAT(frames_1024_to_max_octets),
1262 MIBSTAT(good_octets_sent),
1263 MIBSTAT(good_frames_sent),
1264 MIBSTAT(excessive_collision),
1265 MIBSTAT(multicast_frames_sent),
1266 MIBSTAT(broadcast_frames_sent),
1267 MIBSTAT(unrec_mac_control_received),
1268 MIBSTAT(fc_sent),
1269 MIBSTAT(good_fc_received),
1270 MIBSTAT(bad_fc_received),
1271 MIBSTAT(undersize_received),
1272 MIBSTAT(fragments_received),
1273 MIBSTAT(oversize_received),
1274 MIBSTAT(jabber_received),
1275 MIBSTAT(mac_receive_error),
1276 MIBSTAT(bad_crc_event),
1277 MIBSTAT(collision),
1278 MIBSTAT(late_collision),
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001279};
1280
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001281static int
1282mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001283{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001284 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001285 int err;
1286
Lennert Buytenheked944932008-08-26 13:34:19 +02001287 err = phy_read_status(mp->phy);
1288 if (err == 0)
1289 err = phy_ethtool_gset(mp->phy, cmd);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001290
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001291 /*
1292 * The MAC does not support 1000baseT_Half.
1293 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001294 cmd->supported &= ~SUPPORTED_1000baseT_Half;
1295 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1296
1297 return err;
1298}
1299
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001300static int
1301mv643xx_eth_get_settings_phyless(struct net_device *dev,
1302 struct ethtool_cmd *cmd)
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001303{
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001304 struct mv643xx_eth_private *mp = netdev_priv(dev);
1305 u32 port_status;
1306
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001307 port_status = rdlp(mp, PORT_STATUS);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001308
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001309 cmd->supported = SUPPORTED_MII;
1310 cmd->advertising = ADVERTISED_MII;
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001311 switch (port_status & PORT_SPEED_MASK) {
1312 case PORT_SPEED_10:
1313 cmd->speed = SPEED_10;
1314 break;
1315 case PORT_SPEED_100:
1316 cmd->speed = SPEED_100;
1317 break;
1318 case PORT_SPEED_1000:
1319 cmd->speed = SPEED_1000;
1320 break;
1321 default:
1322 cmd->speed = -1;
1323 break;
1324 }
1325 cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001326 cmd->port = PORT_MII;
1327 cmd->phy_address = 0;
1328 cmd->transceiver = XCVR_INTERNAL;
1329 cmd->autoneg = AUTONEG_DISABLE;
1330 cmd->maxtxpkt = 1;
1331 cmd->maxrxpkt = 1;
1332
1333 return 0;
1334}
1335
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001336static int
1337mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001338{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001339 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001340
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001341 /*
1342 * The MAC does not support 1000baseT_Half.
1343 */
1344 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1345
Lennert Buytenheked944932008-08-26 13:34:19 +02001346 return phy_ethtool_sset(mp->phy, cmd);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001347}
1348
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001349static int
1350mv643xx_eth_set_settings_phyless(struct net_device *dev,
1351 struct ethtool_cmd *cmd)
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001352{
1353 return -EINVAL;
1354}
1355
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001356static void mv643xx_eth_get_drvinfo(struct net_device *dev,
1357 struct ethtool_drvinfo *drvinfo)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001358{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001359 strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
1360 strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001361 strncpy(drvinfo->fw_version, "N/A", 32);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001362 strncpy(drvinfo->bus_info, "platform", 32);
Lennert Buytenhek16820052008-06-01 11:40:29 +02001363 drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001364}
1365
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001366static int mv643xx_eth_nway_reset(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001367{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001368 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001369
Lennert Buytenheked944932008-08-26 13:34:19 +02001370 return genphy_restart_aneg(mp->phy);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001371}
1372
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001373static int mv643xx_eth_nway_reset_phyless(struct net_device *dev)
1374{
1375 return -EINVAL;
1376}
1377
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001378static u32 mv643xx_eth_get_link(struct net_device *dev)
1379{
Lennert Buytenheked944932008-08-26 13:34:19 +02001380 return !!netif_carrier_ok(dev);
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001381}
1382
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001383static void mv643xx_eth_get_strings(struct net_device *dev,
1384 uint32_t stringset, uint8_t *data)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001385{
1386 int i;
1387
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001388 if (stringset == ETH_SS_STATS) {
1389 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001390 memcpy(data + i * ETH_GSTRING_LEN,
Lennert Buytenhek16820052008-06-01 11:40:29 +02001391 mv643xx_eth_stats[i].stat_string,
Lennert Buytenheke5371492008-06-01 02:18:13 +02001392 ETH_GSTRING_LEN);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001393 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001394 }
1395}
1396
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001397static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
1398 struct ethtool_stats *stats,
1399 uint64_t *data)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001400{
Lennert Buytenhekb9873842008-08-24 05:59:16 +02001401 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001402 int i;
1403
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02001404 mv643xx_eth_get_stats(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001405 mib_counters_update(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001406
Lennert Buytenhek16820052008-06-01 11:40:29 +02001407 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1408 const struct mv643xx_eth_stats *stat;
1409 void *p;
1410
1411 stat = mv643xx_eth_stats + i;
1412
1413 if (stat->netdev_off >= 0)
1414 p = ((void *)mp->dev) + stat->netdev_off;
1415 else
1416 p = ((void *)mp) + stat->mp_off;
1417
1418 data[i] = (stat->sizeof_stat == 8) ?
1419 *(uint64_t *)p : *(uint32_t *)p;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001420 }
1421}
1422
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001423static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001424{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001425 if (sset == ETH_SS_STATS)
Lennert Buytenhek16820052008-06-01 11:40:29 +02001426 return ARRAY_SIZE(mv643xx_eth_stats);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001427
1428 return -EOPNOTSUPP;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001429}
1430
Lennert Buytenheke5371492008-06-01 02:18:13 +02001431static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001432 .get_settings = mv643xx_eth_get_settings,
1433 .set_settings = mv643xx_eth_set_settings,
1434 .get_drvinfo = mv643xx_eth_get_drvinfo,
1435 .nway_reset = mv643xx_eth_nway_reset,
1436 .get_link = mv643xx_eth_get_link,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001437 .set_sg = ethtool_op_set_sg,
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001438 .get_strings = mv643xx_eth_get_strings,
1439 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
Lennert Buytenheke5371492008-06-01 02:18:13 +02001440 .get_sset_count = mv643xx_eth_get_sset_count,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001441};
1442
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001443static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = {
1444 .get_settings = mv643xx_eth_get_settings_phyless,
1445 .set_settings = mv643xx_eth_set_settings_phyless,
1446 .get_drvinfo = mv643xx_eth_get_drvinfo,
1447 .nway_reset = mv643xx_eth_nway_reset_phyless,
Lennert Buytenheked944932008-08-26 13:34:19 +02001448 .get_link = mv643xx_eth_get_link,
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001449 .set_sg = ethtool_op_set_sg,
1450 .get_strings = mv643xx_eth_get_strings,
1451 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
1452 .get_sset_count = mv643xx_eth_get_sset_count,
1453};
1454
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001455
1456/* address handling *********************************************************/
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001457static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001458{
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001459 unsigned int mac_h = rdlp(mp, MAC_ADDR_HIGH);
1460 unsigned int mac_l = rdlp(mp, MAC_ADDR_LOW);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001461
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001462 addr[0] = (mac_h >> 24) & 0xff;
1463 addr[1] = (mac_h >> 16) & 0xff;
1464 addr[2] = (mac_h >> 8) & 0xff;
1465 addr[3] = mac_h & 0xff;
1466 addr[4] = (mac_l >> 8) & 0xff;
1467 addr[5] = mac_l & 0xff;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001468}
1469
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001470static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001471{
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001472 wrlp(mp, MAC_ADDR_HIGH,
1473 (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]);
1474 wrlp(mp, MAC_ADDR_LOW, (addr[4] << 8) | addr[5]);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001475}
1476
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001477static u32 uc_addr_filter_mask(struct net_device *dev)
1478{
1479 struct dev_addr_list *uc_ptr;
1480 u32 nibbles;
1481
1482 if (dev->flags & IFF_PROMISC)
1483 return 0;
1484
1485 nibbles = 1 << (dev->dev_addr[5] & 0x0f);
1486 for (uc_ptr = dev->uc_list; uc_ptr != NULL; uc_ptr = uc_ptr->next) {
1487 if (memcmp(dev->dev_addr, uc_ptr->da_addr, 5))
1488 return 0;
1489 if ((dev->dev_addr[5] ^ uc_ptr->da_addr[5]) & 0xf0)
1490 return 0;
1491
1492 nibbles |= 1 << (uc_ptr->da_addr[5] & 0x0f);
1493 }
1494
1495 return nibbles;
1496}
1497
1498static void mv643xx_eth_program_unicast_filter(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001499{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001500 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001501 u32 port_config;
1502 u32 nibbles;
1503 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001504
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001505 uc_addr_set(mp, dev->dev_addr);
1506
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001507 port_config = rdlp(mp, PORT_CONFIG);
1508 nibbles = uc_addr_filter_mask(dev);
1509 if (!nibbles) {
1510 port_config |= UNICAST_PROMISCUOUS_MODE;
1511 wrlp(mp, PORT_CONFIG, port_config);
1512 return;
1513 }
1514
1515 for (i = 0; i < 16; i += 4) {
1516 int off = UNICAST_TABLE(mp->port_num) + i;
1517 u32 v;
1518
1519 v = 0;
1520 if (nibbles & 1)
1521 v |= 0x00000001;
1522 if (nibbles & 2)
1523 v |= 0x00000100;
1524 if (nibbles & 4)
1525 v |= 0x00010000;
1526 if (nibbles & 8)
1527 v |= 0x01000000;
1528 nibbles >>= 4;
1529
1530 wrl(mp, off, v);
1531 }
1532
1533 port_config &= ~UNICAST_PROMISCUOUS_MODE;
1534 wrlp(mp, PORT_CONFIG, port_config);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001535}
1536
Lennert Buytenhek69876562008-06-01 11:43:32 +02001537static int addr_crc(unsigned char *addr)
1538{
1539 int crc = 0;
1540 int i;
1541
1542 for (i = 0; i < 6; i++) {
1543 int j;
1544
1545 crc = (crc ^ addr[i]) << 8;
1546 for (j = 7; j >= 0; j--) {
1547 if (crc & (0x100 << j))
1548 crc ^= 0x107 << j;
1549 }
1550 }
1551
1552 return crc;
1553}
1554
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001555static void mv643xx_eth_program_multicast_filter(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001556{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001557 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001558 u32 *mc_spec;
1559 u32 *mc_other;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001560 struct dev_addr_list *addr;
1561 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001562
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001563 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001564 int port_num;
1565 u32 accept;
1566 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001567
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001568oom:
1569 port_num = mp->port_num;
1570 accept = 0x01010101;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001571 for (i = 0; i < 0x100; i += 4) {
1572 wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
1573 wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001574 }
1575 return;
1576 }
1577
Sebastian Siewior82a5bd62009-02-14 23:26:18 +00001578 mc_spec = kmalloc(0x200, GFP_ATOMIC);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001579 if (mc_spec == NULL)
1580 goto oom;
1581 mc_other = mc_spec + (0x100 >> 2);
1582
1583 memset(mc_spec, 0, 0x100);
1584 memset(mc_other, 0, 0x100);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001585
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001586 for (addr = dev->mc_list; addr != NULL; addr = addr->next) {
1587 u8 *a = addr->da_addr;
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001588 u32 *table;
1589 int entry;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001590
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001591 if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001592 table = mc_spec;
1593 entry = a[5];
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001594 } else {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001595 table = mc_other;
1596 entry = addr_crc(a);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001597 }
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001598
Lennert Buytenhek2b448332009-01-19 17:17:18 -08001599 table[entry >> 2] |= 1 << (8 * (entry & 3));
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001600 }
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001601
1602 for (i = 0; i < 0x100; i += 4) {
1603 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, mc_spec[i >> 2]);
1604 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, mc_other[i >> 2]);
1605 }
1606
1607 kfree(mc_spec);
1608}
1609
1610static void mv643xx_eth_set_rx_mode(struct net_device *dev)
1611{
1612 mv643xx_eth_program_unicast_filter(dev);
1613 mv643xx_eth_program_multicast_filter(dev);
1614}
1615
1616static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
1617{
1618 struct sockaddr *sa = addr;
1619
1620 memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN);
1621
1622 netif_addr_lock_bh(dev);
1623 mv643xx_eth_program_unicast_filter(dev);
1624 netif_addr_unlock_bh(dev);
1625
1626 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001627}
1628
1629
1630/* rx/tx queue initialisation ***********************************************/
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001631static int rxq_init(struct mv643xx_eth_private *mp, int index)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001632{
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001633 struct rx_queue *rxq = mp->rxq + index;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001634 struct rx_desc *rx_desc;
1635 int size;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001636 int i;
1637
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001638 rxq->index = index;
1639
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001640 rxq->rx_ring_size = mp->default_rx_ring_size;
1641
1642 rxq->rx_desc_count = 0;
1643 rxq->rx_curr_desc = 0;
1644 rxq->rx_used_desc = 0;
1645
1646 size = rxq->rx_ring_size * sizeof(struct rx_desc);
1647
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001648 if (index == 0 && size <= mp->rx_desc_sram_size) {
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001649 rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
1650 mp->rx_desc_sram_size);
1651 rxq->rx_desc_dma = mp->rx_desc_sram_addr;
1652 } else {
1653 rxq->rx_desc_area = dma_alloc_coherent(NULL, size,
1654 &rxq->rx_desc_dma,
1655 GFP_KERNEL);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001656 }
1657
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001658 if (rxq->rx_desc_area == NULL) {
1659 dev_printk(KERN_ERR, &mp->dev->dev,
1660 "can't allocate rx ring (%d bytes)\n", size);
1661 goto out;
1662 }
1663 memset(rxq->rx_desc_area, 0, size);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001664
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001665 rxq->rx_desc_area_size = size;
1666 rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
1667 GFP_KERNEL);
1668 if (rxq->rx_skb == NULL) {
1669 dev_printk(KERN_ERR, &mp->dev->dev,
1670 "can't allocate rx skb ring\n");
1671 goto out_free;
1672 }
1673
1674 rx_desc = (struct rx_desc *)rxq->rx_desc_area;
1675 for (i = 0; i < rxq->rx_ring_size; i++) {
Lennert Buytenhek9da78742008-08-23 23:45:28 +02001676 int nexti;
1677
1678 nexti = i + 1;
1679 if (nexti == rxq->rx_ring_size)
1680 nexti = 0;
1681
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001682 rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
1683 nexti * sizeof(struct rx_desc);
1684 }
1685
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001686 return 0;
1687
1688
1689out_free:
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001690 if (index == 0 && size <= mp->rx_desc_sram_size)
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001691 iounmap(rxq->rx_desc_area);
1692 else
1693 dma_free_coherent(NULL, size,
1694 rxq->rx_desc_area,
1695 rxq->rx_desc_dma);
1696
1697out:
1698 return -ENOMEM;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001699}
1700
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001701static void rxq_deinit(struct rx_queue *rxq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001702{
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001703 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
1704 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001705
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001706 rxq_disable(rxq);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001707
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001708 for (i = 0; i < rxq->rx_ring_size; i++) {
1709 if (rxq->rx_skb[i]) {
1710 dev_kfree_skb(rxq->rx_skb[i]);
1711 rxq->rx_desc_count--;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001712 }
1713 }
1714
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001715 if (rxq->rx_desc_count) {
1716 dev_printk(KERN_ERR, &mp->dev->dev,
1717 "error freeing rx ring -- %d skbs stuck\n",
1718 rxq->rx_desc_count);
1719 }
1720
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001721 if (rxq->index == 0 &&
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001722 rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001723 iounmap(rxq->rx_desc_area);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001724 else
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001725 dma_free_coherent(NULL, rxq->rx_desc_area_size,
1726 rxq->rx_desc_area, rxq->rx_desc_dma);
1727
1728 kfree(rxq->rx_skb);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001729}
1730
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001731static int txq_init(struct mv643xx_eth_private *mp, int index)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001732{
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001733 struct tx_queue *txq = mp->txq + index;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001734 struct tx_desc *tx_desc;
1735 int size;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001736 int i;
1737
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001738 txq->index = index;
1739
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001740 txq->tx_ring_size = mp->default_tx_ring_size;
1741
1742 txq->tx_desc_count = 0;
1743 txq->tx_curr_desc = 0;
1744 txq->tx_used_desc = 0;
1745
1746 size = txq->tx_ring_size * sizeof(struct tx_desc);
1747
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001748 if (index == 0 && size <= mp->tx_desc_sram_size) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001749 txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
1750 mp->tx_desc_sram_size);
1751 txq->tx_desc_dma = mp->tx_desc_sram_addr;
1752 } else {
1753 txq->tx_desc_area = dma_alloc_coherent(NULL, size,
1754 &txq->tx_desc_dma,
1755 GFP_KERNEL);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001756 }
1757
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001758 if (txq->tx_desc_area == NULL) {
1759 dev_printk(KERN_ERR, &mp->dev->dev,
1760 "can't allocate tx ring (%d bytes)\n", size);
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +02001761 return -ENOMEM;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001762 }
1763 memset(txq->tx_desc_area, 0, size);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001764
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001765 txq->tx_desc_area_size = size;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001766
1767 tx_desc = (struct tx_desc *)txq->tx_desc_area;
1768 for (i = 0; i < txq->tx_ring_size; i++) {
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02001769 struct tx_desc *txd = tx_desc + i;
Lennert Buytenhek9da78742008-08-23 23:45:28 +02001770 int nexti;
1771
1772 nexti = i + 1;
1773 if (nexti == txq->tx_ring_size)
1774 nexti = 0;
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02001775
1776 txd->cmd_sts = 0;
1777 txd->next_desc_ptr = txq->tx_desc_dma +
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001778 nexti * sizeof(struct tx_desc);
1779 }
1780
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +02001781 skb_queue_head_init(&txq->tx_skb);
1782
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001783 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001784}
1785
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001786static void txq_deinit(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001787{
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001788 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001789
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001790 txq_disable(txq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001791 txq_reclaim(txq, txq->tx_ring_size, 1);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001792
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001793 BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001794
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001795 if (txq->index == 0 &&
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001796 txq->tx_desc_area_size <= mp->tx_desc_sram_size)
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001797 iounmap(txq->tx_desc_area);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001798 else
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001799 dma_free_coherent(NULL, txq->tx_desc_area_size,
1800 txq->tx_desc_area, txq->tx_desc_dma);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001801}
1802
1803
1804/* netdev ops and related ***************************************************/
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001805static int mv643xx_eth_collect_events(struct mv643xx_eth_private *mp)
1806{
1807 u32 int_cause;
1808 u32 int_cause_ext;
1809
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001810 int_cause = rdlp(mp, INT_CAUSE) & (INT_TX_END | INT_RX | INT_EXT);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001811 if (int_cause == 0)
1812 return 0;
1813
1814 int_cause_ext = 0;
1815 if (int_cause & INT_EXT)
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001816 int_cause_ext = rdlp(mp, INT_CAUSE_EXT);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001817
1818 int_cause &= INT_TX_END | INT_RX;
1819 if (int_cause) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001820 wrlp(mp, INT_CAUSE, ~int_cause);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001821 mp->work_tx_end |= ((int_cause & INT_TX_END) >> 19) &
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001822 ~(rdlp(mp, TXQ_COMMAND) & 0xff);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001823 mp->work_rx |= (int_cause & INT_RX) >> 2;
1824 }
1825
1826 int_cause_ext &= INT_EXT_LINK_PHY | INT_EXT_TX;
1827 if (int_cause_ext) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001828 wrlp(mp, INT_CAUSE_EXT, ~int_cause_ext);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001829 if (int_cause_ext & INT_EXT_LINK_PHY)
1830 mp->work_link = 1;
1831 mp->work_tx |= int_cause_ext & INT_EXT_TX;
1832 }
1833
1834 return 1;
1835}
1836
1837static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
1838{
1839 struct net_device *dev = (struct net_device *)dev_id;
1840 struct mv643xx_eth_private *mp = netdev_priv(dev);
1841
1842 if (unlikely(!mv643xx_eth_collect_events(mp)))
1843 return IRQ_NONE;
1844
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001845 wrlp(mp, INT_MASK, 0);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001846 napi_schedule(&mp->napi);
1847
1848 return IRQ_HANDLED;
1849}
1850
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02001851static void handle_link_event(struct mv643xx_eth_private *mp)
1852{
1853 struct net_device *dev = mp->dev;
1854 u32 port_status;
1855 int speed;
1856 int duplex;
1857 int fc;
1858
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001859 port_status = rdlp(mp, PORT_STATUS);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02001860 if (!(port_status & LINK_UP)) {
1861 if (netif_carrier_ok(dev)) {
1862 int i;
1863
1864 printk(KERN_INFO "%s: link down\n", dev->name);
1865
1866 netif_carrier_off(dev);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02001867
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001868 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02001869 struct tx_queue *txq = mp->txq + i;
1870
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001871 txq_reclaim(txq, txq->tx_ring_size, 1);
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001872 txq_reset_hw_ptr(txq);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02001873 }
1874 }
1875 return;
1876 }
1877
1878 switch (port_status & PORT_SPEED_MASK) {
1879 case PORT_SPEED_10:
1880 speed = 10;
1881 break;
1882 case PORT_SPEED_100:
1883 speed = 100;
1884 break;
1885 case PORT_SPEED_1000:
1886 speed = 1000;
1887 break;
1888 default:
1889 speed = -1;
1890 break;
1891 }
1892 duplex = (port_status & FULL_DUPLEX) ? 1 : 0;
1893 fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0;
1894
1895 printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, "
1896 "flow control %sabled\n", dev->name,
1897 speed, duplex ? "full" : "half",
1898 fc ? "en" : "dis");
1899
Lennert Buytenhek4fdeca32008-08-28 05:39:13 +02001900 if (!netif_carrier_ok(dev))
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02001901 netif_carrier_on(dev);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02001902}
1903
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001904static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001905{
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001906 struct mv643xx_eth_private *mp;
1907 int work_done;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001908
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001909 mp = container_of(napi, struct mv643xx_eth_private, napi);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001910
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001911 mp->work_rx_refill |= mp->work_rx_oom;
1912 mp->work_rx_oom = 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001913
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001914 work_done = 0;
1915 while (work_done < budget) {
1916 u8 queue_mask;
1917 int queue;
1918 int work_tbd;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001919
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001920 if (mp->work_link) {
1921 mp->work_link = 0;
1922 handle_link_event(mp);
1923 continue;
Lennert Buytenhek226bb6b2008-06-02 01:47:21 +02001924 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001925
1926 queue_mask = mp->work_tx | mp->work_tx_end |
1927 mp->work_rx | mp->work_rx_refill;
1928 if (!queue_mask) {
1929 if (mv643xx_eth_collect_events(mp))
1930 continue;
1931 break;
1932 }
1933
1934 queue = fls(queue_mask) - 1;
1935 queue_mask = 1 << queue;
1936
1937 work_tbd = budget - work_done;
1938 if (work_tbd > 16)
1939 work_tbd = 16;
1940
1941 if (mp->work_tx_end & queue_mask) {
1942 txq_kick(mp->txq + queue);
1943 } else if (mp->work_tx & queue_mask) {
1944 work_done += txq_reclaim(mp->txq + queue, work_tbd, 0);
1945 txq_maybe_wake(mp->txq + queue);
1946 } else if (mp->work_rx & queue_mask) {
1947 work_done += rxq_process(mp->rxq + queue, work_tbd);
1948 } else if (mp->work_rx_refill & queue_mask) {
1949 work_done += rxq_refill(mp->rxq + queue, work_tbd);
1950 } else {
1951 BUG();
1952 }
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001953 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001954
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001955 if (work_done < budget) {
1956 if (mp->work_rx_oom)
1957 mod_timer(&mp->rx_oom, jiffies + (HZ / 10));
1958 napi_complete(napi);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001959 wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02001960 }
1961
1962 return work_done;
1963}
1964
1965static inline void oom_timer_wrapper(unsigned long data)
1966{
1967 struct mv643xx_eth_private *mp = (void *)data;
1968
1969 napi_schedule(&mp->napi);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001970}
1971
Lennert Buytenheke5371492008-06-01 02:18:13 +02001972static void phy_reset(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001973{
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001974 int data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001975
Lennert Buytenheked944932008-08-26 13:34:19 +02001976 data = phy_read(mp->phy, MII_BMCR);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001977 if (data < 0)
1978 return;
1979
Lennert Buytenhek7f106c12008-07-15 02:28:47 +02001980 data |= BMCR_RESET;
Lennert Buytenheked944932008-08-26 13:34:19 +02001981 if (phy_write(mp->phy, MII_BMCR, data) < 0)
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001982 return;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001983
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001984 do {
Lennert Buytenheked944932008-08-26 13:34:19 +02001985 data = phy_read(mp->phy, MII_BMCR);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001986 } while (data >= 0 && data & BMCR_RESET);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001987}
1988
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001989static void port_start(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001990{
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001991 u32 pscr;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001992 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001993
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001994 /*
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001995 * Perform PHY reset, if there is a PHY.
1996 */
Lennert Buytenheked944932008-08-26 13:34:19 +02001997 if (mp->phy != NULL) {
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001998 struct ethtool_cmd cmd;
1999
2000 mv643xx_eth_get_settings(mp->dev, &cmd);
2001 phy_reset(mp);
2002 mv643xx_eth_set_settings(mp->dev, &cmd);
2003 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002004
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002005 /*
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002006 * Configure basic link parameters.
2007 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002008 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002009
2010 pscr |= SERIAL_PORT_ENABLE;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002011 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002012
2013 pscr |= DO_NOT_FORCE_LINK_FAIL;
Lennert Buytenheked944932008-08-26 13:34:19 +02002014 if (mp->phy == NULL)
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002015 pscr |= FORCE_LINK_PASS;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002016 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002017
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002018 wrlp(mp, SDMA_CONFIG, PORT_SDMA_CONFIG_DEFAULT_VALUE);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002019
2020 /*
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002021 * Configure TX path and queues.
2022 */
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002023 tx_set_rate(mp, 1000000000, 16777216);
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002024 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002025 struct tx_queue *txq = mp->txq + i;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002026
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02002027 txq_reset_hw_ptr(txq);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002028 txq_set_rate(txq, 1000000000, 16777216);
2029 txq_set_fixed_prio_mode(txq);
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002030 }
2031
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002032 /*
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +02002033 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
Lennert Buytenhek170e7102008-09-19 02:58:50 +02002034 * frames to RX queue #0, and include the pseudo-header when
2035 * calculating receive checksums.
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +02002036 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002037 wrlp(mp, PORT_CONFIG, 0x02000000);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002038
Lennert Buytenhek376489a2008-06-01 01:17:44 +02002039 /*
2040 * Treat BPDUs as normal multicasts, and disable partition mode.
2041 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002042 wrlp(mp, PORT_CONFIG_EXT, 0x00000000);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002043
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002044 /*
Lennert Buytenhek5a893922009-03-13 15:48:02 -07002045 * Add configured unicast addresses to address filter table.
2046 */
2047 mv643xx_eth_program_unicast_filter(mp->dev);
2048
2049 /*
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002050 * Enable the receive queues.
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002051 */
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002052 for (i = 0; i < mp->rxq_count; i++) {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002053 struct rx_queue *rxq = mp->rxq + i;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002054 u32 addr;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002055
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002056 addr = (u32)rxq->rx_desc_dma;
2057 addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002058 wrlp(mp, RXQ_CURRENT_DESC_PTR(i), addr);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002059
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002060 rxq_enable(rxq);
2061 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002062}
2063
Lennert Buytenhekffd86bb2008-06-01 21:59:27 +02002064static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002065{
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002066 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002067 u32 val;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002068
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002069 val = rdlp(mp, SDMA_CONFIG);
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002070 if (mp->shared->extended_rx_coal_limit) {
2071 if (coal > 0xffff)
2072 coal = 0xffff;
2073 val &= ~0x023fff80;
2074 val |= (coal & 0x8000) << 10;
2075 val |= (coal & 0x7fff) << 7;
2076 } else {
2077 if (coal > 0x3fff)
2078 coal = 0x3fff;
2079 val &= ~0x003fff00;
2080 val |= (coal & 0x3fff) << 8;
2081 }
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002082 wrlp(mp, SDMA_CONFIG, val);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002083}
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002084
Lennert Buytenhekffd86bb2008-06-01 21:59:27 +02002085static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002086{
2087 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
2088
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002089 if (coal > 0x3fff)
2090 coal = 0x3fff;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002091 wrlp(mp, TX_FIFO_URGENT_THRESHOLD, (coal & 0x3fff) << 4);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002092}
2093
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002094static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private *mp)
2095{
2096 int skb_size;
2097
2098 /*
2099 * Reserve 2+14 bytes for an ethernet header (the hardware
2100 * automatically prepends 2 bytes of dummy data to each
2101 * received packet), 16 bytes for up to four VLAN tags, and
2102 * 4 bytes for the trailing FCS -- 36 bytes total.
2103 */
2104 skb_size = mp->dev->mtu + 36;
2105
2106 /*
2107 * Make sure that the skb size is a multiple of 8 bytes, as
2108 * the lower three bits of the receive descriptor's buffer
2109 * size field are ignored by the hardware.
2110 */
2111 mp->skb_size = (skb_size + 7) & ~7;
2112}
2113
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002114static int mv643xx_eth_open(struct net_device *dev)
2115{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002116 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002117 int err;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002118 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002119
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002120 wrlp(mp, INT_CAUSE, 0);
2121 wrlp(mp, INT_CAUSE_EXT, 0);
2122 rdlp(mp, INT_CAUSE_EXT);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002123
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002124 err = request_irq(dev->irq, mv643xx_eth_irq,
Lennert Buytenhek2a1867a2008-08-23 23:43:38 +02002125 IRQF_SHARED, dev->name, dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002126 if (err) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002127 dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002128 return -EAGAIN;
2129 }
2130
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002131 mv643xx_eth_recalc_skb_size(mp);
2132
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002133 napi_enable(&mp->napi);
2134
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002135 skb_queue_head_init(&mp->rx_recycle);
2136
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002137 for (i = 0; i < mp->rxq_count; i++) {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002138 err = rxq_init(mp, i);
2139 if (err) {
2140 while (--i >= 0)
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002141 rxq_deinit(mp->rxq + i);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002142 goto out;
2143 }
2144
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002145 rxq_refill(mp->rxq + i, INT_MAX);
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002146 }
2147
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002148 if (mp->work_rx_oom) {
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002149 mp->rx_oom.expires = jiffies + (HZ / 10);
2150 add_timer(&mp->rx_oom);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002151 }
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002152
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002153 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002154 err = txq_init(mp, i);
2155 if (err) {
2156 while (--i >= 0)
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002157 txq_deinit(mp->txq + i);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002158 goto out_free;
2159 }
2160 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002161
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002162 netif_carrier_off(dev);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002163
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002164 port_start(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002165
Lennert Buytenhekffd86bb2008-06-01 21:59:27 +02002166 set_rx_coal(mp, 0);
2167 set_tx_coal(mp, 0);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002168
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002169 wrlp(mp, INT_MASK_EXT, INT_EXT_LINK_PHY | INT_EXT_TX);
2170 wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002171
2172 return 0;
2173
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002174
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002175out_free:
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002176 for (i = 0; i < mp->rxq_count; i++)
2177 rxq_deinit(mp->rxq + i);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002178out:
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002179 free_irq(dev->irq, dev);
2180
2181 return err;
2182}
2183
Lennert Buytenheke5371492008-06-01 02:18:13 +02002184static void port_reset(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002185{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002186 unsigned int data;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002187 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002188
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002189 for (i = 0; i < mp->rxq_count; i++)
2190 rxq_disable(mp->rxq + i);
2191 for (i = 0; i < mp->txq_count; i++)
2192 txq_disable(mp->txq + i);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002193
2194 while (1) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002195 u32 ps = rdlp(mp, PORT_STATUS);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002196
2197 if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY)
2198 break;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002199 udelay(10);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002200 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002201
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002202 /* Reset the Enable bit in the Configuration Register */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002203 data = rdlp(mp, PORT_SERIAL_CONTROL);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002204 data &= ~(SERIAL_PORT_ENABLE |
2205 DO_NOT_FORCE_LINK_FAIL |
2206 FORCE_LINK_PASS);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002207 wrlp(mp, PORT_SERIAL_CONTROL, data);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002208}
2209
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002210static int mv643xx_eth_stop(struct net_device *dev)
2211{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002212 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002213 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002214
Gabriel Paubertfe65e702009-01-19 17:18:09 -08002215 wrlp(mp, INT_MASK_EXT, 0x00000000);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002216 wrlp(mp, INT_MASK, 0x00000000);
2217 rdlp(mp, INT_MASK);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002218
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002219 napi_disable(&mp->napi);
Lennert Buytenhek78fff832008-08-24 01:03:57 +02002220
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002221 del_timer_sync(&mp->rx_oom);
2222
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002223 netif_carrier_off(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002224
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002225 free_irq(dev->irq, dev);
2226
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +02002227 port_reset(mp);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02002228 mv643xx_eth_get_stats(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002229 mib_counters_update(mp);
Sebastian Siewior57e8f262009-02-16 11:28:15 +00002230 del_timer_sync(&mp->mib_counters_timer);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002231
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002232 skb_queue_purge(&mp->rx_recycle);
2233
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002234 for (i = 0; i < mp->rxq_count; i++)
2235 rxq_deinit(mp->rxq + i);
2236 for (i = 0; i < mp->txq_count; i++)
2237 txq_deinit(mp->txq + i);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002238
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002239 return 0;
2240}
2241
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002242static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002243{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002244 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002245
Lennert Buytenheked944932008-08-26 13:34:19 +02002246 if (mp->phy != NULL)
2247 return phy_mii_ioctl(mp->phy, if_mii(ifr), cmd);
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02002248
2249 return -EOPNOTSUPP;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002250}
2251
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002252static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
2253{
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002254 struct mv643xx_eth_private *mp = netdev_priv(dev);
2255
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002256 if (new_mtu < 64 || new_mtu > 9500)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002257 return -EINVAL;
2258
2259 dev->mtu = new_mtu;
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002260 mv643xx_eth_recalc_skb_size(mp);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002261 tx_set_rate(mp, 1000000000, 16777216);
2262
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002263 if (!netif_running(dev))
2264 return 0;
2265
2266 /*
2267 * Stop and then re-open the interface. This will allocate RX
2268 * skbs of the new MTU.
2269 * There is a possible danger that the open will not succeed,
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002270 * due to memory being full.
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002271 */
2272 mv643xx_eth_stop(dev);
2273 if (mv643xx_eth_open(dev)) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002274 dev_printk(KERN_ERR, &dev->dev,
2275 "fatal error on re-opening device after "
2276 "MTU change\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002277 }
2278
2279 return 0;
2280}
2281
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002282static void tx_timeout_task(struct work_struct *ugly)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002283{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002284 struct mv643xx_eth_private *mp;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002285
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002286 mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
2287 if (netif_running(mp->dev)) {
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002288 netif_tx_stop_all_queues(mp->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002289 port_reset(mp);
2290 port_start(mp);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002291 netif_tx_wake_all_queues(mp->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002292 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002293}
2294
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002295static void mv643xx_eth_tx_timeout(struct net_device *dev)
2296{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002297 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002298
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002299 dev_printk(KERN_INFO, &dev->dev, "tx timeout\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002300
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002301 schedule_work(&mp->tx_timeout_task);
2302}
2303
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002304#ifdef CONFIG_NET_POLL_CONTROLLER
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002305static void mv643xx_eth_netpoll(struct net_device *dev)
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002306{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002307 struct mv643xx_eth_private *mp = netdev_priv(dev);
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002308
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002309 wrlp(mp, INT_MASK, 0x00000000);
2310 rdlp(mp, INT_MASK);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07002311
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002312 mv643xx_eth_irq(dev->irq, dev);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07002313
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002314 wrlp(mp, INT_MASK, INT_TX_END | INT_RX | INT_EXT);
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002315}
2316#endif
2317
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002318
2319/* platform glue ************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +02002320static void
2321mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
2322 struct mbus_dram_target_info *dram)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002323{
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +02002324 void __iomem *base = msp->base;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002325 u32 win_enable;
2326 u32 win_protect;
2327 int i;
2328
2329 for (i = 0; i < 6; i++) {
2330 writel(0, base + WINDOW_BASE(i));
2331 writel(0, base + WINDOW_SIZE(i));
2332 if (i < 4)
2333 writel(0, base + WINDOW_REMAP_HIGH(i));
2334 }
2335
2336 win_enable = 0x3f;
2337 win_protect = 0;
2338
2339 for (i = 0; i < dram->num_cs; i++) {
2340 struct mbus_dram_window *cs = dram->cs + i;
2341
2342 writel((cs->base & 0xffff0000) |
2343 (cs->mbus_attr << 8) |
2344 dram->mbus_dram_target_id, base + WINDOW_BASE(i));
2345 writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
2346
2347 win_enable &= ~(1 << i);
2348 win_protect |= 3 << (2 * i);
2349 }
2350
2351 writel(win_enable, base + WINDOW_BAR_ENABLE);
2352 msp->win_protect = win_protect;
2353}
2354
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002355static void infer_hw_params(struct mv643xx_eth_shared_private *msp)
2356{
2357 /*
2358 * Check whether we have a 14-bit coal limit field in bits
2359 * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
2360 * SDMA config register.
2361 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002362 writel(0x02000000, msp->base + 0x0400 + SDMA_CONFIG);
2363 if (readl(msp->base + 0x0400 + SDMA_CONFIG) & 0x02000000)
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002364 msp->extended_rx_coal_limit = 1;
2365 else
2366 msp->extended_rx_coal_limit = 0;
Lennert Buytenhek1e881592008-06-02 01:57:36 +02002367
2368 /*
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002369 * Check whether the MAC supports TX rate control, and if
2370 * yes, whether its associated registers are in the old or
2371 * the new place.
Lennert Buytenhek1e881592008-06-02 01:57:36 +02002372 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002373 writel(1, msp->base + 0x0400 + TX_BW_MTU_MOVED);
2374 if (readl(msp->base + 0x0400 + TX_BW_MTU_MOVED) & 1) {
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002375 msp->tx_bw_control = TX_BW_CONTROL_NEW_LAYOUT;
2376 } else {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002377 writel(7, msp->base + 0x0400 + TX_BW_RATE);
2378 if (readl(msp->base + 0x0400 + TX_BW_RATE) & 7)
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002379 msp->tx_bw_control = TX_BW_CONTROL_OLD_LAYOUT;
2380 else
2381 msp->tx_bw_control = TX_BW_CONTROL_ABSENT;
2382 }
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002383}
2384
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002385static int mv643xx_eth_shared_probe(struct platform_device *pdev)
2386{
Lennert Buytenhek10a99482008-11-20 03:57:16 -08002387 static int mv643xx_eth_version_printed;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002388 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
Lennert Buytenheke5371492008-06-01 02:18:13 +02002389 struct mv643xx_eth_shared_private *msp;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002390 struct resource *res;
2391 int ret;
2392
Lennert Buytenheke5371492008-06-01 02:18:13 +02002393 if (!mv643xx_eth_version_printed++)
Lennert Buytenhek7dde1542008-07-15 12:20:30 +02002394 printk(KERN_NOTICE "MV-643xx 10/100/1000 ethernet "
2395 "driver version %s\n", mv643xx_eth_driver_version);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002396
2397 ret = -EINVAL;
2398 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2399 if (res == NULL)
2400 goto out;
2401
2402 ret = -ENOMEM;
2403 msp = kmalloc(sizeof(*msp), GFP_KERNEL);
2404 if (msp == NULL)
2405 goto out;
2406 memset(msp, 0, sizeof(*msp));
2407
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +02002408 msp->base = ioremap(res->start, res->end - res->start + 1);
2409 if (msp->base == NULL)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002410 goto out_free;
2411
Lennert Buytenheked944932008-08-26 13:34:19 +02002412 /*
2413 * Set up and register SMI bus.
2414 */
2415 if (pd == NULL || pd->shared_smi == NULL) {
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002416 msp->smi_bus = mdiobus_alloc();
2417 if (msp->smi_bus == NULL)
Lennert Buytenheked944932008-08-26 13:34:19 +02002418 goto out_unmap;
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002419
2420 msp->smi_bus->priv = msp;
2421 msp->smi_bus->name = "mv643xx_eth smi";
2422 msp->smi_bus->read = smi_bus_read;
2423 msp->smi_bus->write = smi_bus_write,
2424 snprintf(msp->smi_bus->id, MII_BUS_ID_SIZE, "%d", pdev->id);
2425 msp->smi_bus->parent = &pdev->dev;
2426 msp->smi_bus->phy_mask = 0xffffffff;
2427 if (mdiobus_register(msp->smi_bus) < 0)
2428 goto out_free_mii_bus;
Lennert Buytenheked944932008-08-26 13:34:19 +02002429 msp->smi = msp;
2430 } else {
Lennert Buytenhekfc0eb9f2008-08-26 12:56:56 +02002431 msp->smi = platform_get_drvdata(pd->shared_smi);
Lennert Buytenheked944932008-08-26 13:34:19 +02002432 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002433
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002434 msp->err_interrupt = NO_IRQ;
2435 init_waitqueue_head(&msp->smi_busy_wait);
2436
2437 /*
2438 * Check whether the error interrupt is hooked up.
2439 */
2440 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2441 if (res != NULL) {
2442 int err;
2443
2444 err = request_irq(res->start, mv643xx_eth_err_irq,
2445 IRQF_SHARED, "mv643xx_eth", msp);
2446 if (!err) {
2447 writel(ERR_INT_SMI_DONE, msp->base + ERR_INT_MASK);
2448 msp->err_interrupt = res->start;
2449 }
2450 }
2451
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002452 /*
2453 * (Re-)program MBUS remapping windows if we are asked to.
2454 */
2455 if (pd != NULL && pd->dram != NULL)
2456 mv643xx_eth_conf_mbus_windows(msp, pd->dram);
2457
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002458 /*
2459 * Detect hardware parameters.
2460 */
2461 msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002462 infer_hw_params(msp);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002463
2464 platform_set_drvdata(pdev, msp);
2465
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002466 return 0;
2467
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002468out_free_mii_bus:
2469 mdiobus_free(msp->smi_bus);
Lennert Buytenheked944932008-08-26 13:34:19 +02002470out_unmap:
2471 iounmap(msp->base);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002472out_free:
2473 kfree(msp);
2474out:
2475 return ret;
2476}
2477
2478static int mv643xx_eth_shared_remove(struct platform_device *pdev)
2479{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002480 struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
Lennert Buytenheked944932008-08-26 13:34:19 +02002481 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002482
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002483 if (pd == NULL || pd->shared_smi == NULL) {
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002484 mdiobus_unregister(msp->smi_bus);
Lennert Buytenhekbcb33362008-11-18 04:28:35 +00002485 mdiobus_free(msp->smi_bus);
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002486 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002487 if (msp->err_interrupt != NO_IRQ)
2488 free_irq(msp->err_interrupt, msp);
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +02002489 iounmap(msp->base);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002490 kfree(msp);
2491
2492 return 0;
2493}
2494
2495static struct platform_driver mv643xx_eth_shared_driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002496 .probe = mv643xx_eth_shared_probe,
2497 .remove = mv643xx_eth_shared_remove,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002498 .driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002499 .name = MV643XX_ETH_SHARED_NAME,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002500 .owner = THIS_MODULE,
2501 },
2502};
2503
Lennert Buytenheke5371492008-06-01 02:18:13 +02002504static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002505{
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002506 int addr_shift = 5 * mp->port_num;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002507 u32 data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002508
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002509 data = rdl(mp, PHY_ADDR);
2510 data &= ~(0x1f << addr_shift);
2511 data |= (phy_addr & 0x1f) << addr_shift;
2512 wrl(mp, PHY_ADDR, data);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002513}
2514
Lennert Buytenheke5371492008-06-01 02:18:13 +02002515static int phy_addr_get(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002516{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002517 unsigned int data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002518
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002519 data = rdl(mp, PHY_ADDR);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002520
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002521 return (data >> (5 * mp->port_num)) & 0x1f;
2522}
2523
2524static void set_params(struct mv643xx_eth_private *mp,
2525 struct mv643xx_eth_platform_data *pd)
2526{
2527 struct net_device *dev = mp->dev;
2528
2529 if (is_valid_ether_addr(pd->mac_addr))
2530 memcpy(dev->dev_addr, pd->mac_addr, 6);
2531 else
2532 uc_addr_get(mp, dev->dev_addr);
2533
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002534 mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
2535 if (pd->rx_queue_size)
2536 mp->default_rx_ring_size = pd->rx_queue_size;
2537 mp->rx_desc_sram_addr = pd->rx_sram_addr;
2538 mp->rx_desc_sram_size = pd->rx_sram_size;
2539
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002540 mp->rxq_count = pd->rx_queue_count ? : 1;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002541
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002542 mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
2543 if (pd->tx_queue_size)
2544 mp->default_tx_ring_size = pd->tx_queue_size;
2545 mp->tx_desc_sram_addr = pd->tx_sram_addr;
2546 mp->tx_desc_sram_size = pd->tx_sram_size;
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002547
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002548 mp->txq_count = pd->tx_queue_count ? : 1;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002549}
2550
Lennert Buytenheked944932008-08-26 13:34:19 +02002551static struct phy_device *phy_scan(struct mv643xx_eth_private *mp,
2552 int phy_addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002553{
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002554 struct mii_bus *bus = mp->shared->smi->smi_bus;
Lennert Buytenheked944932008-08-26 13:34:19 +02002555 struct phy_device *phydev;
2556 int start;
2557 int num;
2558 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002559
Lennert Buytenheked944932008-08-26 13:34:19 +02002560 if (phy_addr == MV643XX_ETH_PHY_ADDR_DEFAULT) {
2561 start = phy_addr_get(mp) & 0x1f;
2562 num = 32;
2563 } else {
2564 start = phy_addr & 0x1f;
2565 num = 1;
2566 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002567
Lennert Buytenheked944932008-08-26 13:34:19 +02002568 phydev = NULL;
2569 for (i = 0; i < num; i++) {
2570 int addr = (start + i) & 0x1f;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002571
Lennert Buytenheked944932008-08-26 13:34:19 +02002572 if (bus->phy_map[addr] == NULL)
2573 mdiobus_scan(bus, addr);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002574
Lennert Buytenheked944932008-08-26 13:34:19 +02002575 if (phydev == NULL) {
2576 phydev = bus->phy_map[addr];
2577 if (phydev != NULL)
2578 phy_addr_set(mp, addr);
2579 }
2580 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002581
Lennert Buytenheked944932008-08-26 13:34:19 +02002582 return phydev;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002583}
2584
Lennert Buytenheked944932008-08-26 13:34:19 +02002585static void phy_init(struct mv643xx_eth_private *mp, int speed, int duplex)
James Chapmand0412d92006-01-27 01:15:30 -07002586{
Lennert Buytenheked944932008-08-26 13:34:19 +02002587 struct phy_device *phy = mp->phy;
James Chapmand0412d92006-01-27 01:15:30 -07002588
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002589 phy_reset(mp);
2590
Lennert Buytenheked944932008-08-26 13:34:19 +02002591 phy_attach(mp->dev, phy->dev.bus_id, 0, PHY_INTERFACE_MODE_GMII);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002592
Lennert Buytenheked944932008-08-26 13:34:19 +02002593 if (speed == 0) {
2594 phy->autoneg = AUTONEG_ENABLE;
2595 phy->speed = 0;
2596 phy->duplex = 0;
2597 phy->advertising = phy->supported | ADVERTISED_Autoneg;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002598 } else {
Lennert Buytenheked944932008-08-26 13:34:19 +02002599 phy->autoneg = AUTONEG_DISABLE;
2600 phy->advertising = 0;
2601 phy->speed = speed;
2602 phy->duplex = duplex;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002603 }
Lennert Buytenheked944932008-08-26 13:34:19 +02002604 phy_start_aneg(phy);
James Chapmand0412d92006-01-27 01:15:30 -07002605}
2606
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002607static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
2608{
2609 u32 pscr;
2610
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002611 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002612 if (pscr & SERIAL_PORT_ENABLE) {
2613 pscr &= ~SERIAL_PORT_ENABLE;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002614 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002615 }
2616
2617 pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED;
Lennert Buytenheked944932008-08-26 13:34:19 +02002618 if (mp->phy == NULL) {
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002619 pscr |= DISABLE_AUTO_NEG_SPEED_GMII;
2620 if (speed == SPEED_1000)
2621 pscr |= SET_GMII_SPEED_TO_1000;
2622 else if (speed == SPEED_100)
2623 pscr |= SET_MII_SPEED_TO_100;
2624
2625 pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL;
2626
2627 pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX;
2628 if (duplex == DUPLEX_FULL)
2629 pscr |= SET_FULL_DUPLEX_MODE;
2630 }
2631
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002632 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002633}
2634
Russell King3ae5eae2005-11-09 22:32:44 +00002635static int mv643xx_eth_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002636{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002637 struct mv643xx_eth_platform_data *pd;
Lennert Buytenheke5371492008-06-01 02:18:13 +02002638 struct mv643xx_eth_private *mp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002639 struct net_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002640 struct resource *res;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002641 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002642
Dale Farnsworth84dd6192007-03-03 06:40:28 -07002643 pd = pdev->dev.platform_data;
2644 if (pd == NULL) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002645 dev_printk(KERN_ERR, &pdev->dev,
2646 "no mv643xx_eth_platform_data\n");
Dale Farnsworth84dd6192007-03-03 06:40:28 -07002647 return -ENODEV;
2648 }
2649
Lennert Buytenhekfa3959f2008-04-24 01:27:02 +02002650 if (pd->shared == NULL) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002651 dev_printk(KERN_ERR, &pdev->dev,
2652 "no mv643xx_eth_platform_data->shared\n");
Lennert Buytenhekfa3959f2008-04-24 01:27:02 +02002653 return -ENODEV;
2654 }
2655
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002656 dev = alloc_etherdev_mq(sizeof(struct mv643xx_eth_private), 8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002657 if (!dev)
2658 return -ENOMEM;
2659
Linus Torvalds1da177e2005-04-16 15:20:36 -07002660 mp = netdev_priv(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002661 platform_set_drvdata(pdev, mp);
2662
2663 mp->shared = platform_get_drvdata(pd->shared);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002664 mp->base = mp->shared->base + 0x0400 + (pd->port_number << 10);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002665 mp->port_num = pd->port_number;
2666
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002667 mp->dev = dev;
Lennert Buytenhek78fff832008-08-24 01:03:57 +02002668
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002669 set_params(mp, pd);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002670 dev->real_num_tx_queues = mp->txq_count;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002671
Lennert Buytenheked944932008-08-26 13:34:19 +02002672 if (pd->phy_addr != MV643XX_ETH_PHY_NONE)
2673 mp->phy = phy_scan(mp, pd->phy_addr);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002674
Lennert Buytenheked944932008-08-26 13:34:19 +02002675 if (mp->phy != NULL) {
2676 phy_init(mp, pd->speed, pd->duplex);
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02002677 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
2678 } else {
2679 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless);
2680 }
Lennert Buytenheked944932008-08-26 13:34:19 +02002681
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002682 init_pscr(mp, pd->speed, pd->duplex);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002683
Lennert Buytenhek4ff34952008-09-19 05:04:57 +02002684
2685 mib_counters_clear(mp);
2686
2687 init_timer(&mp->mib_counters_timer);
2688 mp->mib_counters_timer.data = (unsigned long)mp;
2689 mp->mib_counters_timer.function = mib_counters_timer_wrapper;
2690 mp->mib_counters_timer.expires = jiffies + 30 * HZ;
2691 add_timer(&mp->mib_counters_timer);
2692
2693 spin_lock_init(&mp->mib_counters_lock);
2694
2695 INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
2696
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002697 netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 128);
2698
2699 init_timer(&mp->rx_oom);
2700 mp->rx_oom.data = (unsigned long)mp;
2701 mp->rx_oom.function = oom_timer_wrapper;
2702
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002703
Linus Torvalds1da177e2005-04-16 15:20:36 -07002704 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2705 BUG_ON(!res);
2706 dev->irq = res->start;
2707
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02002708 dev->get_stats = mv643xx_eth_get_stats;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002709 dev->hard_start_xmit = mv643xx_eth_xmit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002710 dev->open = mv643xx_eth_open;
2711 dev->stop = mv643xx_eth_stop;
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08002712 dev->set_rx_mode = mv643xx_eth_set_rx_mode;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002713 dev->set_mac_address = mv643xx_eth_set_mac_address;
2714 dev->do_ioctl = mv643xx_eth_ioctl;
2715 dev->change_mtu = mv643xx_eth_change_mtu;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002716 dev->tx_timeout = mv643xx_eth_tx_timeout;
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002717#ifdef CONFIG_NET_POLL_CONTROLLER
Lennert Buytenheke5371492008-06-01 02:18:13 +02002718 dev->poll_controller = mv643xx_eth_netpoll;
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002719#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002720 dev->watchdog_timeo = 2 * HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002721 dev->base_addr = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002722
Wolfram Joost63890572006-01-16 16:57:41 -07002723 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
Lennert Buytenheke32b6612008-07-24 06:22:59 +02002724 dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM;
James Chapmanc28a4f82006-01-27 01:13:15 -07002725
Olaf Heringb0b8dab2006-04-27 18:23:49 -07002726 SET_NETDEV_DEV(dev, &pdev->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002727
2728 if (mp->shared->win_protect)
2729 wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
2730
Linus Torvalds1da177e2005-04-16 15:20:36 -07002731 err = register_netdev(dev);
2732 if (err)
2733 goto out;
2734
Johannes Berge1749612008-10-27 15:59:26 -07002735 dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %pM\n",
2736 mp->port_num, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002737
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002738 if (mp->tx_desc_sram_size > 0)
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002739 dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");
Nicolas DETb1529872005-10-28 17:46:30 -07002740
Linus Torvalds1da177e2005-04-16 15:20:36 -07002741 return 0;
2742
2743out:
2744 free_netdev(dev);
2745
2746 return err;
2747}
2748
Russell King3ae5eae2005-11-09 22:32:44 +00002749static int mv643xx_eth_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002750{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002751 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002752
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002753 unregister_netdev(mp->dev);
Lennert Buytenheked944932008-08-26 13:34:19 +02002754 if (mp->phy != NULL)
2755 phy_detach(mp->phy);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002756 flush_scheduled_work();
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002757 free_netdev(mp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002758
Russell King3ae5eae2005-11-09 22:32:44 +00002759 platform_set_drvdata(pdev, NULL);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002760
Linus Torvalds1da177e2005-04-16 15:20:36 -07002761 return 0;
2762}
2763
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002764static void mv643xx_eth_shutdown(struct platform_device *pdev)
2765{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002766 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002767
2768 /* Mask all interrupts on ethernet port */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002769 wrlp(mp, INT_MASK, 0);
2770 rdlp(mp, INT_MASK);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002771
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002772 if (netif_running(mp->dev))
2773 port_reset(mp);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002774}
2775
Russell King3ae5eae2005-11-09 22:32:44 +00002776static struct platform_driver mv643xx_eth_driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002777 .probe = mv643xx_eth_probe,
2778 .remove = mv643xx_eth_remove,
2779 .shutdown = mv643xx_eth_shutdown,
Russell King3ae5eae2005-11-09 22:32:44 +00002780 .driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002781 .name = MV643XX_ETH_NAME,
Kay Sievers72abb462008-04-18 13:50:44 -07002782 .owner = THIS_MODULE,
Russell King3ae5eae2005-11-09 22:32:44 +00002783 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07002784};
2785
Lennert Buytenheke5371492008-06-01 02:18:13 +02002786static int __init mv643xx_eth_init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002787{
2788 int rc;
2789
Russell King3ae5eae2005-11-09 22:32:44 +00002790 rc = platform_driver_register(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002791 if (!rc) {
Russell King3ae5eae2005-11-09 22:32:44 +00002792 rc = platform_driver_register(&mv643xx_eth_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002793 if (rc)
Russell King3ae5eae2005-11-09 22:32:44 +00002794 platform_driver_unregister(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002795 }
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002796
Linus Torvalds1da177e2005-04-16 15:20:36 -07002797 return rc;
2798}
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002799module_init(mv643xx_eth_init_module);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002800
Lennert Buytenheke5371492008-06-01 02:18:13 +02002801static void __exit mv643xx_eth_cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002802{
Russell King3ae5eae2005-11-09 22:32:44 +00002803 platform_driver_unregister(&mv643xx_eth_driver);
2804 platform_driver_unregister(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002805}
Lennert Buytenheke5371492008-06-01 02:18:13 +02002806module_exit(mv643xx_eth_cleanup_module);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002807
Lennert Buytenhek45675bc2008-06-02 02:02:30 +02002808MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
2809 "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002810MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002811MODULE_LICENSE("GPL");
Kay Sievers72abb462008-04-18 13:50:44 -07002812MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002813MODULE_ALIAS("platform:" MV643XX_ETH_NAME);