blob: e345ec8cb473cda0d3454d5f2711b08c55fe8bdf [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>
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +000056#include <linux/inet_lro.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090057#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070058#include <asm/system.h>
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020059
Lennert Buytenheke5371492008-06-01 02:18:13 +020060static char mv643xx_eth_driver_name[] = "mv643xx_eth";
Lennert Buytenhek042af532008-08-24 09:01:57 +020061static char mv643xx_eth_driver_version[] = "1.4";
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +020062
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020063
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020064/*
65 * Registers shared between all ports.
66 */
Lennert Buytenhek3cb46672008-06-01 01:03:23 +020067#define PHY_ADDR 0x0000
68#define SMI_REG 0x0004
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +020069#define SMI_BUSY 0x10000000
70#define SMI_READ_VALID 0x08000000
71#define SMI_OPCODE_READ 0x04000000
72#define SMI_OPCODE_WRITE 0x00000000
73#define ERR_INT_CAUSE 0x0080
74#define ERR_INT_SMI_DONE 0x00000010
75#define ERR_INT_MASK 0x0084
Lennert Buytenhek3cb46672008-06-01 01:03:23 +020076#define WINDOW_BASE(w) (0x0200 + ((w) << 3))
77#define WINDOW_SIZE(w) (0x0204 + ((w) << 3))
78#define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2))
79#define WINDOW_BAR_ENABLE 0x0290
80#define WINDOW_PROTECT(w) (0x0294 + ((w) << 4))
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020081
82/*
Lennert Buytenhek37a60842008-11-20 03:57:36 -080083 * Main per-port registers. These live at offset 0x0400 for
84 * port #0, 0x0800 for port #1, and 0x0c00 for port #2.
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020085 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -080086#define PORT_CONFIG 0x0000
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +020087#define UNICAST_PROMISCUOUS_MODE 0x00000001
Lennert Buytenhek37a60842008-11-20 03:57:36 -080088#define PORT_CONFIG_EXT 0x0004
89#define MAC_ADDR_LOW 0x0014
90#define MAC_ADDR_HIGH 0x0018
91#define SDMA_CONFIG 0x001c
Lennert Buytenhekbecfad92009-05-06 03:01:17 +000092#define TX_BURST_SIZE_16_64BIT 0x01000000
93#define TX_BURST_SIZE_4_64BIT 0x00800000
94#define BLM_TX_NO_SWAP 0x00000020
95#define BLM_RX_NO_SWAP 0x00000010
96#define RX_BURST_SIZE_16_64BIT 0x00000008
97#define RX_BURST_SIZE_4_64BIT 0x00000004
Lennert Buytenhek37a60842008-11-20 03:57:36 -080098#define PORT_SERIAL_CONTROL 0x003c
Lennert Buytenhekbecfad92009-05-06 03:01:17 +000099#define SET_MII_SPEED_TO_100 0x01000000
100#define SET_GMII_SPEED_TO_1000 0x00800000
101#define SET_FULL_DUPLEX_MODE 0x00200000
102#define MAX_RX_PACKET_9700BYTE 0x000a0000
103#define DISABLE_AUTO_NEG_SPEED_GMII 0x00002000
104#define DO_NOT_FORCE_LINK_FAIL 0x00000400
105#define SERIAL_PORT_CONTROL_RESERVED 0x00000200
106#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL 0x00000008
107#define DISABLE_AUTO_NEG_FOR_DUPLEX 0x00000004
108#define FORCE_LINK_PASS 0x00000002
109#define SERIAL_PORT_ENABLE 0x00000001
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800110#define PORT_STATUS 0x0044
Lennert Buytenheka2a41682008-06-01 01:30:42 +0200111#define TX_FIFO_EMPTY 0x00000400
Lennert Buytenhekae9ae062008-07-15 02:15:24 +0200112#define TX_IN_PROGRESS 0x00000080
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +0200113#define PORT_SPEED_MASK 0x00000030
114#define PORT_SPEED_1000 0x00000010
115#define PORT_SPEED_100 0x00000020
116#define PORT_SPEED_10 0x00000000
117#define FLOW_CONTROL_ENABLED 0x00000008
118#define FULL_DUPLEX 0x00000004
Lennert Buytenhek81600eea92008-07-14 14:29:40 +0200119#define LINK_UP 0x00000002
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800120#define TXQ_COMMAND 0x0048
121#define TXQ_FIX_PRIO_CONF 0x004c
122#define TX_BW_RATE 0x0050
123#define TX_BW_MTU 0x0058
124#define TX_BW_BURST 0x005c
125#define INT_CAUSE 0x0060
Lennert Buytenhek226bb6b2008-06-02 01:47:21 +0200126#define INT_TX_END 0x07f80000
Saeed Bisharae0ca8412009-05-06 03:02:01 +0000127#define INT_TX_END_0 0x00080000
Lennert Buytenhekbefefe22008-08-28 06:10:04 +0200128#define INT_RX 0x000003fc
Saeed Bisharae0ca8412009-05-06 03:02:01 +0000129#define INT_RX_0 0x00000004
Lennert Buytenhek073a3452008-06-01 02:00:31 +0200130#define INT_EXT 0x00000002
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800131#define INT_CAUSE_EXT 0x0064
Lennert Buytenhekbefefe22008-08-28 06:10:04 +0200132#define INT_EXT_LINK_PHY 0x00110000
133#define INT_EXT_TX 0x000000ff
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800134#define INT_MASK 0x0068
135#define INT_MASK_EXT 0x006c
136#define TX_FIFO_URGENT_THRESHOLD 0x0074
137#define TXQ_FIX_PRIO_CONF_MOVED 0x00dc
138#define TX_BW_RATE_MOVED 0x00e0
139#define TX_BW_MTU_MOVED 0x00e8
140#define TX_BW_BURST_MOVED 0x00ec
141#define RXQ_CURRENT_DESC_PTR(q) (0x020c + ((q) << 4))
142#define RXQ_COMMAND 0x0280
143#define TXQ_CURRENT_DESC_PTR(q) (0x02c0 + ((q) << 2))
144#define TXQ_BW_TOKENS(q) (0x0300 + ((q) << 4))
145#define TXQ_BW_CONF(q) (0x0304 + ((q) << 4))
146#define TXQ_BW_WRR_CONF(q) (0x0308 + ((q) << 4))
147
148/*
149 * Misc per-port registers.
150 */
Lennert Buytenhek3cb46672008-06-01 01:03:23 +0200151#define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
152#define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
153#define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
154#define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200155
Lennert Buytenhek2679a552008-06-01 01:18:58 +0200156
157/*
Lennert Buytenhekbecfad92009-05-06 03:01:17 +0000158 * SDMA configuration register default value.
Lennert Buytenhek2679a552008-06-01 01:18:58 +0200159 */
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200160#if defined(__BIG_ENDIAN)
161#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
Lennert Buytenheke0c6ef92009-01-19 17:16:00 -0800162 (RX_BURST_SIZE_4_64BIT | \
163 TX_BURST_SIZE_4_64BIT)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200164#elif defined(__LITTLE_ENDIAN)
165#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
Lennert Buytenheke0c6ef92009-01-19 17:16:00 -0800166 (RX_BURST_SIZE_4_64BIT | \
167 BLM_RX_NO_SWAP | \
168 BLM_TX_NO_SWAP | \
169 TX_BURST_SIZE_4_64BIT)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200170#else
171#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
172#endif
173
Lennert Buytenhek2beff772008-06-01 01:22:37 +0200174
175/*
Lennert Buytenhekbecfad92009-05-06 03:01:17 +0000176 * Misc definitions.
Lennert Buytenhek2beff772008-06-01 01:22:37 +0200177 */
Lennert Buytenhekbecfad92009-05-06 03:01:17 +0000178#define DEFAULT_RX_QUEUE_SIZE 128
179#define DEFAULT_TX_QUEUE_SIZE 256
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +0000180#define SKB_DMA_REALIGN ((PAGE_SIZE - NET_SKB_PAD) % SMP_CACHE_BYTES)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200181
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200182
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200183/*
184 * RX/TX descriptors.
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200185 */
186#if defined(__BIG_ENDIAN)
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200187struct rx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200188 u16 byte_cnt; /* Descriptor buffer byte count */
189 u16 buf_size; /* Buffer size */
190 u32 cmd_sts; /* Descriptor command status */
191 u32 next_desc_ptr; /* Next descriptor pointer */
192 u32 buf_ptr; /* Descriptor buffer pointer */
193};
194
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200195struct tx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200196 u16 byte_cnt; /* buffer byte count */
197 u16 l4i_chk; /* CPU provided TCP checksum */
198 u32 cmd_sts; /* Command/status field */
199 u32 next_desc_ptr; /* Pointer to next descriptor */
200 u32 buf_ptr; /* pointer to buffer for this descriptor*/
201};
202#elif defined(__LITTLE_ENDIAN)
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200203struct rx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200204 u32 cmd_sts; /* Descriptor command status */
205 u16 buf_size; /* Buffer size */
206 u16 byte_cnt; /* Descriptor buffer byte count */
207 u32 buf_ptr; /* Descriptor buffer pointer */
208 u32 next_desc_ptr; /* Next descriptor pointer */
209};
210
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200211struct tx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200212 u32 cmd_sts; /* Command/status field */
213 u16 l4i_chk; /* CPU provided TCP checksum */
214 u16 byte_cnt; /* buffer byte count */
215 u32 buf_ptr; /* pointer to buffer for this descriptor*/
216 u32 next_desc_ptr; /* Pointer to next descriptor */
217};
218#else
219#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
220#endif
221
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200222/* RX & TX descriptor command */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200223#define BUFFER_OWNED_BY_DMA 0x80000000
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200224
225/* RX & TX descriptor status */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200226#define ERROR_SUMMARY 0x00000001
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200227
228/* RX descriptor status */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200229#define LAYER_4_CHECKSUM_OK 0x40000000
230#define RX_ENABLE_INTERRUPT 0x20000000
231#define RX_FIRST_DESC 0x08000000
232#define RX_LAST_DESC 0x04000000
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000233#define RX_IP_HDR_OK 0x02000000
234#define RX_PKT_IS_IPV4 0x01000000
235#define RX_PKT_IS_ETHERNETV2 0x00800000
236#define RX_PKT_LAYER4_TYPE_MASK 0x00600000
237#define RX_PKT_LAYER4_TYPE_TCP_IPV4 0x00000000
238#define RX_PKT_IS_VLAN_TAGGED 0x00080000
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200239
240/* TX descriptor command */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200241#define TX_ENABLE_INTERRUPT 0x00800000
242#define GEN_CRC 0x00400000
243#define TX_FIRST_DESC 0x00200000
244#define TX_LAST_DESC 0x00100000
245#define ZERO_PADDING 0x00080000
246#define GEN_IP_V4_CHECKSUM 0x00040000
247#define GEN_TCP_UDP_CHECKSUM 0x00020000
248#define UDP_FRAME 0x00010000
Lennert Buytenheke32b6612008-07-24 06:22:59 +0200249#define MAC_HDR_EXTRA_4_BYTES 0x00008000
250#define MAC_HDR_EXTRA_8_BYTES 0x00000200
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200251
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200252#define TX_IHL_SHIFT 11
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200253
254
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200255/* global *******************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200256struct mv643xx_eth_shared_private {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200257 /*
258 * Ethernet controller base address.
259 */
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200260 void __iomem *base;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200261
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200262 /*
Lennert Buytenhekfc0eb9f2008-08-26 12:56:56 +0200263 * Points at the right SMI instance to use.
264 */
265 struct mv643xx_eth_shared_private *smi;
266
267 /*
Lennert Buytenheked944932008-08-26 13:34:19 +0200268 * Provides access to local SMI interface.
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200269 */
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -0700270 struct mii_bus *smi_bus;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200271
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200272 /*
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +0200273 * If we have access to the error interrupt pin (which is
274 * somewhat misnamed as it not only reflects internal errors
275 * but also reflects SMI completion), use that to wait for
276 * SMI access completion instead of polling the SMI busy bit.
277 */
278 int err_interrupt;
279 wait_queue_head_t smi_busy_wait;
280
281 /*
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200282 * Per-port MBUS window access register value.
283 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200284 u32 win_protect;
285
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200286 /*
287 * Hardware-specific parameters.
288 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200289 unsigned int t_clk;
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +0200290 int extended_rx_coal_limit;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200291 int tx_bw_control;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200292};
293
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200294#define TX_BW_CONTROL_ABSENT 0
295#define TX_BW_CONTROL_OLD_LAYOUT 1
296#define TX_BW_CONTROL_NEW_LAYOUT 2
297
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +0000298static int mv643xx_eth_open(struct net_device *dev);
299static int mv643xx_eth_stop(struct net_device *dev);
300
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200301
302/* per-port *****************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200303struct mib_counters {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200304 u64 good_octets_received;
305 u32 bad_octets_received;
306 u32 internal_mac_transmit_err;
307 u32 good_frames_received;
308 u32 bad_frames_received;
309 u32 broadcast_frames_received;
310 u32 multicast_frames_received;
311 u32 frames_64_octets;
312 u32 frames_65_to_127_octets;
313 u32 frames_128_to_255_octets;
314 u32 frames_256_to_511_octets;
315 u32 frames_512_to_1023_octets;
316 u32 frames_1024_to_max_octets;
317 u64 good_octets_sent;
318 u32 good_frames_sent;
319 u32 excessive_collision;
320 u32 multicast_frames_sent;
321 u32 broadcast_frames_sent;
322 u32 unrec_mac_control_received;
323 u32 fc_sent;
324 u32 good_fc_received;
325 u32 bad_fc_received;
326 u32 undersize_received;
327 u32 fragments_received;
328 u32 oversize_received;
329 u32 jabber_received;
330 u32 mac_receive_error;
331 u32 bad_crc_event;
332 u32 collision;
333 u32 late_collision;
334};
335
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000336struct lro_counters {
337 u32 lro_aggregated;
338 u32 lro_flushed;
339 u32 lro_no_desc;
340};
341
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200342struct rx_queue {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200343 int index;
344
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200345 int rx_ring_size;
346
347 int rx_desc_count;
348 int rx_curr_desc;
349 int rx_used_desc;
350
351 struct rx_desc *rx_desc_area;
352 dma_addr_t rx_desc_dma;
353 int rx_desc_area_size;
354 struct sk_buff **rx_skb;
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000355
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000356 struct net_lro_mgr lro_mgr;
357 struct net_lro_desc lro_arr[8];
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200358};
359
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200360struct tx_queue {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200361 int index;
362
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200363 int tx_ring_size;
364
365 int tx_desc_count;
366 int tx_curr_desc;
367 int tx_used_desc;
368
369 struct tx_desc *tx_desc_area;
370 dma_addr_t tx_desc_dma;
371 int tx_desc_area_size;
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200372
373 struct sk_buff_head tx_skb;
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200374
375 unsigned long tx_packets;
376 unsigned long tx_bytes;
377 unsigned long tx_dropped;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200378};
379
Lennert Buytenheke5371492008-06-01 02:18:13 +0200380struct mv643xx_eth_private {
381 struct mv643xx_eth_shared_private *shared;
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800382 void __iomem *base;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200383 int port_num;
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200384
385 struct net_device *dev;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200386
Lennert Buytenheked944932008-08-26 13:34:19 +0200387 struct phy_device *phy;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200388
Lennert Buytenhek4ff34952008-09-19 05:04:57 +0200389 struct timer_list mib_counters_timer;
390 spinlock_t mib_counters_lock;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200391 struct mib_counters mib_counters;
Lennert Buytenhek4ff34952008-09-19 05:04:57 +0200392
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000393 struct lro_counters lro_counters;
394
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200395 struct work_struct tx_timeout_task;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200396
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200397 struct napi_struct napi;
Saeed Bisharae0ca8412009-05-06 03:02:01 +0000398 u32 int_mask;
Lennert Buytenhek1319eba2009-04-29 11:57:34 +0000399 u8 oom;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200400 u8 work_link;
401 u8 work_tx;
402 u8 work_tx_end;
403 u8 work_rx;
404 u8 work_rx_refill;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200405
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700406 int skb_size;
407 struct sk_buff_head rx_recycle;
408
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200409 /*
410 * RX state.
411 */
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +0000412 int rx_ring_size;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200413 unsigned long rx_desc_sram_addr;
414 int rx_desc_sram_size;
Lennert Buytenhekf7981c12008-08-26 10:23:22 +0200415 int rxq_count;
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200416 struct timer_list rx_oom;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200417 struct rx_queue rxq[8];
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200418
419 /*
420 * TX state.
421 */
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +0000422 int tx_ring_size;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200423 unsigned long tx_desc_sram_addr;
424 int tx_desc_sram_size;
Lennert Buytenhekf7981c12008-08-26 10:23:22 +0200425 int txq_count;
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200426 struct tx_queue txq[8];
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200427};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200429
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200430/* port register accessors **************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200431static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432{
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200433 return readl(mp->shared->base + offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434}
435
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800436static inline u32 rdlp(struct mv643xx_eth_private *mp, int offset)
437{
438 return readl(mp->base + offset);
439}
440
Lennert Buytenheke5371492008-06-01 02:18:13 +0200441static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442{
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200443 writel(data, mp->shared->base + offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444}
445
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800446static inline void wrlp(struct mv643xx_eth_private *mp, int offset, u32 data)
447{
448 writel(data, mp->base + offset);
449}
450
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200451
452/* rxq/txq helper functions *************************************************/
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200453static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454{
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200455 return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200456}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200458static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
459{
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200460 return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200461}
462
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200463static void rxq_enable(struct rx_queue *rxq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200464{
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200465 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800466 wrlp(mp, RXQ_COMMAND, 1 << rxq->index);
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200467}
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700468
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200469static void rxq_disable(struct rx_queue *rxq)
470{
471 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200472 u8 mask = 1 << rxq->index;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200473
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800474 wrlp(mp, RXQ_COMMAND, mask << 8);
475 while (rdlp(mp, RXQ_COMMAND) & mask)
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200476 udelay(10);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200477}
478
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200479static void txq_reset_hw_ptr(struct tx_queue *txq)
480{
481 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200482 u32 addr;
483
484 addr = (u32)txq->tx_desc_dma;
485 addr += txq->tx_curr_desc * sizeof(struct tx_desc);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800486 wrlp(mp, TXQ_CURRENT_DESC_PTR(txq->index), addr);
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200487}
488
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200489static void txq_enable(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200490{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200491 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800492 wrlp(mp, TXQ_COMMAND, 1 << txq->index);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200493}
494
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200495static void txq_disable(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200496{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200497 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200498 u8 mask = 1 << txq->index;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200499
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800500 wrlp(mp, TXQ_COMMAND, mask << 8);
501 while (rdlp(mp, TXQ_COMMAND) & mask)
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200502 udelay(10);
503}
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200504
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200505static void txq_maybe_wake(struct tx_queue *txq)
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200506{
507 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200508 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200509
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200510 if (netif_tx_queue_stopped(nq)) {
511 __netif_tx_lock(nq, smp_processor_id());
512 if (txq->tx_ring_size - txq->tx_desc_count >= MAX_SKB_FRAGS + 1)
513 netif_tx_wake_queue(nq);
514 __netif_tx_unlock(nq);
515 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200516}
517
518
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200519/* rx napi ******************************************************************/
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000520static int
521mv643xx_get_skb_header(struct sk_buff *skb, void **iphdr, void **tcph,
522 u64 *hdr_flags, void *priv)
523{
524 unsigned long cmd_sts = (unsigned long)priv;
525
526 /*
527 * Make sure that this packet is Ethernet II, is not VLAN
528 * tagged, is IPv4, has a valid IP header, and is TCP.
529 */
530 if ((cmd_sts & (RX_IP_HDR_OK | RX_PKT_IS_IPV4 |
531 RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_MASK |
532 RX_PKT_IS_VLAN_TAGGED)) !=
533 (RX_IP_HDR_OK | RX_PKT_IS_IPV4 |
534 RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_TCP_IPV4))
535 return -1;
536
537 skb_reset_network_header(skb);
538 skb_set_transport_header(skb, ip_hdrlen(skb));
539 *iphdr = ip_hdr(skb);
540 *tcph = tcp_hdr(skb);
541 *hdr_flags = LRO_IPV4 | LRO_TCP;
542
543 return 0;
544}
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000545
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200546static int rxq_process(struct rx_queue *rxq, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547{
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200548 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
549 struct net_device_stats *stats = &mp->dev->stats;
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000550 int lro_flush_needed;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200551 int rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000553 lro_flush_needed = 0;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200554 rx = 0;
Lennert Buytenhek9e1f3772008-08-24 02:33:47 +0200555 while (rx < budget && rxq->rx_desc_count) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200556 struct rx_desc *rx_desc;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200557 unsigned int cmd_sts;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200558 struct sk_buff *skb;
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200559 u16 byte_cnt;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200560
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200561 rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
Lennert Buytenhek96587662008-06-01 10:31:56 +0200562
563 cmd_sts = rx_desc->cmd_sts;
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200564 if (cmd_sts & BUFFER_OWNED_BY_DMA)
Lennert Buytenhek96587662008-06-01 10:31:56 +0200565 break;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200566 rmb();
567
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200568 skb = rxq->rx_skb[rxq->rx_curr_desc];
569 rxq->rx_skb[rxq->rx_curr_desc] = NULL;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200570
Lennert Buytenhek9da78742008-08-23 23:45:28 +0200571 rxq->rx_curr_desc++;
572 if (rxq->rx_curr_desc == rxq->rx_ring_size)
573 rxq->rx_curr_desc = 0;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200574
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700575 dma_unmap_single(mp->dev->dev.parent, rx_desc->buf_ptr,
Lennert Buytenhekabe78712008-08-24 03:00:20 +0200576 rx_desc->buf_size, DMA_FROM_DEVICE);
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200577 rxq->rx_desc_count--;
578 rx++;
Dale Farnsworthb1dd9ca2005-09-01 09:59:23 -0700579
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200580 mp->work_rx_refill |= 1 << rxq->index;
581
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200582 byte_cnt = rx_desc->byte_cnt;
583
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700584 /*
585 * Update statistics.
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200586 *
587 * Note that the descriptor byte count includes 2 dummy
588 * bytes automatically inserted by the hardware at the
589 * start of the packet (which we don't count), and a 4
590 * byte CRC at the end of the packet (which we do count).
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700591 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 stats->rx_packets++;
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200593 stats->rx_bytes += byte_cnt - 2;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200594
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 /*
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200596 * In case we received a packet without first / last bits
597 * on, or the error summary bit is set, the packet needs
598 * to be dropped.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 */
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800600 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC | ERROR_SUMMARY))
601 != (RX_FIRST_DESC | RX_LAST_DESC))
602 goto err;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200603
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800604 /*
605 * The -4 is for the CRC in the trailer of the
606 * received packet
607 */
608 skb_put(skb, byte_cnt - 2 - 4);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200609
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800610 if (cmd_sts & LAYER_4_CHECKSUM_OK)
611 skb->ip_summed = CHECKSUM_UNNECESSARY;
612 skb->protocol = eth_type_trans(skb, mp->dev);
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000613
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000614 if (skb->dev->features & NETIF_F_LRO &&
615 skb->ip_summed == CHECKSUM_UNNECESSARY) {
616 lro_receive_skb(&rxq->lro_mgr, skb, (void *)cmd_sts);
617 lro_flush_needed = 1;
618 } else
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000619 netif_receive_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800621 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800623err:
624 stats->rx_dropped++;
625
626 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
627 (RX_FIRST_DESC | RX_LAST_DESC)) {
628 if (net_ratelimit())
629 dev_printk(KERN_ERR, &mp->dev->dev,
630 "received packet spanning "
631 "multiple descriptors\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 }
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800633
634 if (cmd_sts & ERROR_SUMMARY)
635 stats->rx_errors++;
636
637 dev_kfree_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 }
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200639
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000640 if (lro_flush_needed)
641 lro_flush_all(&rxq->lro_mgr);
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000642
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200643 if (rx < budget)
644 mp->work_rx &= ~(1 << rxq->index);
645
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200646 return rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647}
648
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200649static int rxq_refill(struct rx_queue *rxq, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650{
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200651 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200652 int refilled;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200653
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200654 refilled = 0;
655 while (refilled < budget && rxq->rx_desc_count < rxq->rx_ring_size) {
656 struct sk_buff *skb;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200657 int rx;
Lennert Buytenhek53771522008-11-20 03:59:04 -0800658 struct rx_desc *rx_desc;
Saeed Bishara530e5572010-01-05 09:15:32 +0000659 int size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700661 skb = __skb_dequeue(&mp->rx_recycle);
662 if (skb == NULL)
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +0000663 skb = dev_alloc_skb(mp->skb_size);
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700664
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200665 if (skb == NULL) {
Lennert Buytenhek1319eba2009-04-29 11:57:34 +0000666 mp->oom = 1;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200667 goto oom;
668 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +0000670 if (SKB_DMA_REALIGN)
671 skb_reserve(skb, SKB_DMA_REALIGN);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200672
673 refilled++;
674 rxq->rx_desc_count++;
675
676 rx = rxq->rx_used_desc++;
677 if (rxq->rx_used_desc == rxq->rx_ring_size)
678 rxq->rx_used_desc = 0;
679
Lennert Buytenhek53771522008-11-20 03:59:04 -0800680 rx_desc = rxq->rx_desc_area + rx;
681
Saeed Bishara530e5572010-01-05 09:15:32 +0000682 size = skb->end - skb->data;
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700683 rx_desc->buf_ptr = dma_map_single(mp->dev->dev.parent,
Saeed Bishara530e5572010-01-05 09:15:32 +0000684 skb->data, size,
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700685 DMA_FROM_DEVICE);
Saeed Bishara530e5572010-01-05 09:15:32 +0000686 rx_desc->buf_size = size;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200687 rxq->rx_skb[rx] = skb;
688 wmb();
Lennert Buytenhek53771522008-11-20 03:59:04 -0800689 rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200690 wmb();
691
692 /*
693 * The hardware automatically prepends 2 bytes of
694 * dummy data to each received packet, so that the
695 * IP header ends up 16-byte aligned.
696 */
697 skb_reserve(skb, 2);
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200698 }
699
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200700 if (refilled < budget)
701 mp->work_rx_refill &= ~(1 << rxq->index);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200703oom:
704 return refilled;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200707
708/* tx ***********************************************************************/
Paul Janzenf7ea3332006-01-16 16:52:13 -0700709static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
710{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200711 int frag;
Paul Janzenf7ea3332006-01-16 16:52:13 -0700712
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700713 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200714 skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
715 if (fragp->size <= 8 && fragp->page_offset & 7)
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700716 return 1;
717 }
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200718
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700719 return 0;
Paul Janzenf7ea3332006-01-16 16:52:13 -0700720}
721
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200722static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700723{
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700724 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200725 int nr_frags = skb_shinfo(skb)->nr_frags;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700726 int frag;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700727
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200728 for (frag = 0; frag < nr_frags; frag++) {
729 skb_frag_t *this_frag;
730 int tx_index;
731 struct tx_desc *desc;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700732
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200733 this_frag = &skb_shinfo(skb)->frags[frag];
Lennert Buytenhek66823b92008-11-20 03:58:09 -0800734 tx_index = txq->tx_curr_desc++;
735 if (txq->tx_curr_desc == txq->tx_ring_size)
736 txq->tx_curr_desc = 0;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200737 desc = &txq->tx_desc_area[tx_index];
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700738
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200739 /*
740 * The last fragment will generate an interrupt
741 * which will free the skb on TX completion.
742 */
743 if (frag == nr_frags - 1) {
744 desc->cmd_sts = BUFFER_OWNED_BY_DMA |
745 ZERO_PADDING | TX_LAST_DESC |
746 TX_ENABLE_INTERRUPT;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200747 } else {
748 desc->cmd_sts = BUFFER_OWNED_BY_DMA;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200749 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700750
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700751 desc->l4i_chk = 0;
752 desc->byte_cnt = this_frag->size;
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700753 desc->buf_ptr = dma_map_page(mp->dev->dev.parent,
754 this_frag->page,
755 this_frag->page_offset,
756 this_frag->size, DMA_TO_DEVICE);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700757 }
758}
759
Byron Bradley324ff2c2008-02-04 23:47:15 -0800760static inline __be16 sum16_as_be(__sum16 sum)
761{
762 return (__force __be16)sum;
763}
764
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200765static int txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700766{
Lennert Buytenhek8fa89bf2008-07-14 22:56:55 +0200767 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200768 int nr_frags = skb_shinfo(skb)->nr_frags;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700769 int tx_index;
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200770 struct tx_desc *desc;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700771 u32 cmd_sts;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200772 u16 l4i_chk;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700773 int length;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700774
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200775 cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200776 l4i_chk = 0;
777
778 if (skb->ip_summed == CHECKSUM_PARTIAL) {
779 int tag_bytes;
780
781 BUG_ON(skb->protocol != htons(ETH_P_IP) &&
782 skb->protocol != htons(ETH_P_8021Q));
783
784 tag_bytes = (void *)ip_hdr(skb) - (void *)skb->data - ETH_HLEN;
785 if (unlikely(tag_bytes & ~12)) {
786 if (skb_checksum_help(skb) == 0)
787 goto no_csum;
788 kfree_skb(skb);
789 return 1;
790 }
791
792 if (tag_bytes & 4)
793 cmd_sts |= MAC_HDR_EXTRA_4_BYTES;
794 if (tag_bytes & 8)
795 cmd_sts |= MAC_HDR_EXTRA_8_BYTES;
796
797 cmd_sts |= GEN_TCP_UDP_CHECKSUM |
798 GEN_IP_V4_CHECKSUM |
799 ip_hdr(skb)->ihl << TX_IHL_SHIFT;
800
801 switch (ip_hdr(skb)->protocol) {
802 case IPPROTO_UDP:
803 cmd_sts |= UDP_FRAME;
804 l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
805 break;
806 case IPPROTO_TCP:
807 l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
808 break;
809 default:
810 BUG();
811 }
812 } else {
813no_csum:
814 /* Errata BTS #50, IHL must be 5 if no HW checksum */
815 cmd_sts |= 5 << TX_IHL_SHIFT;
816 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700817
Lennert Buytenhek66823b92008-11-20 03:58:09 -0800818 tx_index = txq->tx_curr_desc++;
819 if (txq->tx_curr_desc == txq->tx_ring_size)
820 txq->tx_curr_desc = 0;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200821 desc = &txq->tx_desc_area[tx_index];
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700822
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700823 if (nr_frags) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200824 txq_submit_frag_skb(txq, skb);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700825 length = skb_headlen(skb);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700826 } else {
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +0200827 cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700828 length = skb->len;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700829 }
830
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200831 desc->l4i_chk = l4i_chk;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700832 desc->byte_cnt = length;
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700833 desc->buf_ptr = dma_map_single(mp->dev->dev.parent, skb->data,
834 length, DMA_TO_DEVICE);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700835
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200836 __skb_queue_tail(&txq->tx_skb, skb);
837
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700838 /* ensure all other descriptors are written before first cmd_sts */
839 wmb();
840 desc->cmd_sts = cmd_sts;
841
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200842 /* clear TX_END status */
843 mp->work_tx_end &= ~(1 << txq->index);
Lennert Buytenhek8fa89bf2008-07-14 22:56:55 +0200844
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700845 /* ensure all descriptors are written before poking hardware */
846 wmb();
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200847 txq_enable(txq);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700848
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200849 txq->tx_desc_count += nr_frags + 1;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200850
851 return 0;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700852}
853
Denis Kirjanov0ccfe642009-11-29 17:04:31 -0800854static netdev_tx_t mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855{
Lennert Buytenheke5371492008-06-01 02:18:13 +0200856 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200857 int queue;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200858 struct tx_queue *txq;
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200859 struct netdev_queue *nq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200861 queue = skb_get_queue_mapping(skb);
862 txq = mp->txq + queue;
863 nq = netdev_get_tx_queue(dev, queue);
864
Lennert Buytenhek4d64e712008-03-18 11:32:41 -0700865 if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200866 txq->tx_dropped++;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200867 dev_printk(KERN_DEBUG, &dev->dev,
868 "failed to linearize skb with tiny "
869 "unaligned fragment\n");
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700870 return NETDEV_TX_BUSY;
Dale Farnsworth94843562006-04-11 18:24:26 -0700871 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872
Lennert Buytenhek17cd0a52008-08-24 05:33:55 +0200873 if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) {
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200874 if (net_ratelimit())
875 dev_printk(KERN_ERR, &dev->dev, "tx queue full?!\n");
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200876 kfree_skb(skb);
877 return NETDEV_TX_OK;
Lennert Buytenhek4d64e712008-03-18 11:32:41 -0700878 }
879
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200880 if (!txq_submit_skb(txq, skb)) {
881 int entries_left;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200883 txq->tx_bytes += skb->len;
884 txq->tx_packets++;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200885
886 entries_left = txq->tx_ring_size - txq->tx_desc_count;
887 if (entries_left < MAX_SKB_FRAGS + 1)
888 netif_tx_stop_queue(nq);
889 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700890
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700891 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892}
893
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200894
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200895/* tx napi ******************************************************************/
896static void txq_kick(struct tx_queue *txq)
897{
898 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200899 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200900 u32 hw_desc_ptr;
901 u32 expected_ptr;
902
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200903 __netif_tx_lock(nq, smp_processor_id());
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200904
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800905 if (rdlp(mp, TXQ_COMMAND) & (1 << txq->index))
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200906 goto out;
907
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800908 hw_desc_ptr = rdlp(mp, TXQ_CURRENT_DESC_PTR(txq->index));
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200909 expected_ptr = (u32)txq->tx_desc_dma +
910 txq->tx_curr_desc * sizeof(struct tx_desc);
911
912 if (hw_desc_ptr != expected_ptr)
913 txq_enable(txq);
914
915out:
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200916 __netif_tx_unlock(nq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200917
918 mp->work_tx_end &= ~(1 << txq->index);
919}
920
921static int txq_reclaim(struct tx_queue *txq, int budget, int force)
922{
923 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200924 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200925 int reclaimed;
926
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200927 __netif_tx_lock(nq, smp_processor_id());
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200928
929 reclaimed = 0;
930 while (reclaimed < budget && txq->tx_desc_count > 0) {
931 int tx_index;
932 struct tx_desc *desc;
933 u32 cmd_sts;
934 struct sk_buff *skb;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200935
936 tx_index = txq->tx_used_desc;
937 desc = &txq->tx_desc_area[tx_index];
938 cmd_sts = desc->cmd_sts;
939
940 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
941 if (!force)
942 break;
943 desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA;
944 }
945
946 txq->tx_used_desc = tx_index + 1;
947 if (txq->tx_used_desc == txq->tx_ring_size)
948 txq->tx_used_desc = 0;
949
950 reclaimed++;
951 txq->tx_desc_count--;
952
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200953 skb = NULL;
954 if (cmd_sts & TX_LAST_DESC)
955 skb = __skb_dequeue(&txq->tx_skb);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200956
957 if (cmd_sts & ERROR_SUMMARY) {
958 dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
959 mp->dev->stats.tx_errors++;
960 }
961
Lennert Buytenheka4189502008-09-13 04:16:15 +0200962 if (cmd_sts & TX_FIRST_DESC) {
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700963 dma_unmap_single(mp->dev->dev.parent, desc->buf_ptr,
Lennert Buytenheka4189502008-09-13 04:16:15 +0200964 desc->byte_cnt, DMA_TO_DEVICE);
965 } else {
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700966 dma_unmap_page(mp->dev->dev.parent, desc->buf_ptr,
Lennert Buytenheka4189502008-09-13 04:16:15 +0200967 desc->byte_cnt, DMA_TO_DEVICE);
968 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200969
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700970 if (skb != NULL) {
971 if (skb_queue_len(&mp->rx_recycle) <
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +0000972 mp->rx_ring_size &&
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +0000973 skb_recycle_check(skb, mp->skb_size))
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700974 __skb_queue_head(&mp->rx_recycle, skb);
975 else
976 dev_kfree_skb(skb);
977 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200978 }
979
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200980 __netif_tx_unlock(nq);
981
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200982 if (reclaimed < budget)
983 mp->work_tx &= ~(1 << txq->index);
984
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200985 return reclaimed;
986}
987
988
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +0200989/* tx rate control **********************************************************/
990/*
991 * Set total maximum TX rate (shared by all TX queues for this port)
992 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
993 */
994static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
995{
996 int token_rate;
997 int mtu;
998 int bucket_size;
999
1000 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
1001 if (token_rate > 1023)
1002 token_rate = 1023;
1003
1004 mtu = (mp->dev->mtu + 255) >> 8;
1005 if (mtu > 63)
1006 mtu = 63;
1007
1008 bucket_size = (burst + 255) >> 8;
1009 if (bucket_size > 65535)
1010 bucket_size = 65535;
1011
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001012 switch (mp->shared->tx_bw_control) {
1013 case TX_BW_CONTROL_OLD_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001014 wrlp(mp, TX_BW_RATE, token_rate);
1015 wrlp(mp, TX_BW_MTU, mtu);
1016 wrlp(mp, TX_BW_BURST, bucket_size);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001017 break;
1018 case TX_BW_CONTROL_NEW_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001019 wrlp(mp, TX_BW_RATE_MOVED, token_rate);
1020 wrlp(mp, TX_BW_MTU_MOVED, mtu);
1021 wrlp(mp, TX_BW_BURST_MOVED, bucket_size);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001022 break;
Lennert Buytenhek1e881592008-06-02 01:57:36 +02001023 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001024}
1025
1026static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
1027{
1028 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1029 int token_rate;
1030 int bucket_size;
1031
1032 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
1033 if (token_rate > 1023)
1034 token_rate = 1023;
1035
1036 bucket_size = (burst + 255) >> 8;
1037 if (bucket_size > 65535)
1038 bucket_size = 65535;
1039
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001040 wrlp(mp, TXQ_BW_TOKENS(txq->index), token_rate << 14);
1041 wrlp(mp, TXQ_BW_CONF(txq->index), (bucket_size << 10) | token_rate);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001042}
1043
1044static void txq_set_fixed_prio_mode(struct tx_queue *txq)
1045{
1046 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1047 int off;
1048 u32 val;
1049
1050 /*
1051 * Turn on fixed priority mode.
1052 */
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001053 off = 0;
1054 switch (mp->shared->tx_bw_control) {
1055 case TX_BW_CONTROL_OLD_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001056 off = TXQ_FIX_PRIO_CONF;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001057 break;
1058 case TX_BW_CONTROL_NEW_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001059 off = TXQ_FIX_PRIO_CONF_MOVED;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001060 break;
1061 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001062
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001063 if (off) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001064 val = rdlp(mp, off);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001065 val |= 1 << txq->index;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001066 wrlp(mp, off, val);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001067 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001068}
1069
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001070
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001071/* mii management interface *************************************************/
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001072static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001073{
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001074 struct mv643xx_eth_shared_private *msp = dev_id;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001075
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001076 if (readl(msp->base + ERR_INT_CAUSE) & ERR_INT_SMI_DONE) {
1077 writel(~ERR_INT_SMI_DONE, msp->base + ERR_INT_CAUSE);
1078 wake_up(&msp->smi_busy_wait);
1079 return IRQ_HANDLED;
1080 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001081
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001082 return IRQ_NONE;
1083}
1084
1085static int smi_is_done(struct mv643xx_eth_shared_private *msp)
1086{
1087 return !(readl(msp->base + SMI_REG) & SMI_BUSY);
1088}
1089
1090static int smi_wait_ready(struct mv643xx_eth_shared_private *msp)
1091{
1092 if (msp->err_interrupt == NO_IRQ) {
1093 int i;
1094
1095 for (i = 0; !smi_is_done(msp); i++) {
1096 if (i == 10)
1097 return -ETIMEDOUT;
1098 msleep(10);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001099 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001100
1101 return 0;
1102 }
1103
Lennert Buytenhekee044482008-11-01 06:32:20 +01001104 if (!smi_is_done(msp)) {
1105 wait_event_timeout(msp->smi_busy_wait, smi_is_done(msp),
1106 msecs_to_jiffies(100));
1107 if (!smi_is_done(msp))
1108 return -ETIMEDOUT;
1109 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001110
1111 return 0;
1112}
1113
Lennert Buytenheked944932008-08-26 13:34:19 +02001114static int smi_bus_read(struct mii_bus *bus, int addr, int reg)
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +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;
1118 int ret;
1119
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001120 if (smi_wait_ready(msp)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001121 printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001122 return -ETIMEDOUT;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001123 }
1124
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001125 writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001126
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +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;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001130 }
1131
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001132 ret = readl(smi_reg);
1133 if (!(ret & SMI_READ_VALID)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001134 printk(KERN_WARNING "mv643xx_eth: SMI bus read not valid\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001135 return -ENODEV;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001136 }
1137
Lennert Buytenheked944932008-08-26 13:34:19 +02001138 return ret & 0xffff;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001139}
1140
Lennert Buytenheked944932008-08-26 13:34:19 +02001141static int smi_bus_write(struct mii_bus *bus, int addr, int reg, u16 val)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001142{
Lennert Buytenheked944932008-08-26 13:34:19 +02001143 struct mv643xx_eth_shared_private *msp = bus->priv;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001144 void __iomem *smi_reg = msp->base + SMI_REG;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001145
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001146 if (smi_wait_ready(msp)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001147 printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n");
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001148 return -ETIMEDOUT;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001149 }
1150
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001151 writel(SMI_OPCODE_WRITE | (reg << 21) |
Lennert Buytenheked944932008-08-26 13:34:19 +02001152 (addr << 16) | (val & 0xffff), smi_reg);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001153
Lennert Buytenheked944932008-08-26 13:34:19 +02001154 if (smi_wait_ready(msp)) {
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001155 printk(KERN_WARNING "mv643xx_eth: SMI bus busy timeout\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001156 return -ETIMEDOUT;
1157 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001158
1159 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001160}
1161
1162
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02001163/* statistics ***************************************************************/
1164static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev)
1165{
1166 struct mv643xx_eth_private *mp = netdev_priv(dev);
1167 struct net_device_stats *stats = &dev->stats;
1168 unsigned long tx_packets = 0;
1169 unsigned long tx_bytes = 0;
1170 unsigned long tx_dropped = 0;
1171 int i;
1172
1173 for (i = 0; i < mp->txq_count; i++) {
1174 struct tx_queue *txq = mp->txq + i;
1175
1176 tx_packets += txq->tx_packets;
1177 tx_bytes += txq->tx_bytes;
1178 tx_dropped += txq->tx_dropped;
1179 }
1180
1181 stats->tx_packets = tx_packets;
1182 stats->tx_bytes = tx_bytes;
1183 stats->tx_dropped = tx_dropped;
1184
1185 return stats;
1186}
1187
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001188static void mv643xx_eth_grab_lro_stats(struct mv643xx_eth_private *mp)
1189{
1190 u32 lro_aggregated = 0;
1191 u32 lro_flushed = 0;
1192 u32 lro_no_desc = 0;
1193 int i;
1194
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001195 for (i = 0; i < mp->rxq_count; i++) {
1196 struct rx_queue *rxq = mp->rxq + i;
1197
1198 lro_aggregated += rxq->lro_mgr.stats.aggregated;
1199 lro_flushed += rxq->lro_mgr.stats.flushed;
1200 lro_no_desc += rxq->lro_mgr.stats.no_desc;
1201 }
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001202
1203 mp->lro_counters.lro_aggregated = lro_aggregated;
1204 mp->lro_counters.lro_flushed = lro_flushed;
1205 mp->lro_counters.lro_no_desc = lro_no_desc;
1206}
1207
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001208static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001209{
Lennert Buytenhek3cb46672008-06-01 01:03:23 +02001210 return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001211}
1212
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001213static void mib_counters_clear(struct mv643xx_eth_private *mp)
1214{
1215 int i;
1216
1217 for (i = 0; i < 0x80; i += 4)
1218 mib_read(mp, i);
1219}
1220
1221static void mib_counters_update(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001222{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001223 struct mib_counters *p = &mp->mib_counters;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001224
Sebastian Siewior57e8f262009-02-16 11:28:15 +00001225 spin_lock_bh(&mp->mib_counters_lock);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001226 p->good_octets_received += mib_read(mp, 0x00);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001227 p->bad_octets_received += mib_read(mp, 0x08);
1228 p->internal_mac_transmit_err += mib_read(mp, 0x0c);
1229 p->good_frames_received += mib_read(mp, 0x10);
1230 p->bad_frames_received += mib_read(mp, 0x14);
1231 p->broadcast_frames_received += mib_read(mp, 0x18);
1232 p->multicast_frames_received += mib_read(mp, 0x1c);
1233 p->frames_64_octets += mib_read(mp, 0x20);
1234 p->frames_65_to_127_octets += mib_read(mp, 0x24);
1235 p->frames_128_to_255_octets += mib_read(mp, 0x28);
1236 p->frames_256_to_511_octets += mib_read(mp, 0x2c);
1237 p->frames_512_to_1023_octets += mib_read(mp, 0x30);
1238 p->frames_1024_to_max_octets += mib_read(mp, 0x34);
1239 p->good_octets_sent += mib_read(mp, 0x38);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001240 p->good_frames_sent += mib_read(mp, 0x40);
1241 p->excessive_collision += mib_read(mp, 0x44);
1242 p->multicast_frames_sent += mib_read(mp, 0x48);
1243 p->broadcast_frames_sent += mib_read(mp, 0x4c);
1244 p->unrec_mac_control_received += mib_read(mp, 0x50);
1245 p->fc_sent += mib_read(mp, 0x54);
1246 p->good_fc_received += mib_read(mp, 0x58);
1247 p->bad_fc_received += mib_read(mp, 0x5c);
1248 p->undersize_received += mib_read(mp, 0x60);
1249 p->fragments_received += mib_read(mp, 0x64);
1250 p->oversize_received += mib_read(mp, 0x68);
1251 p->jabber_received += mib_read(mp, 0x6c);
1252 p->mac_receive_error += mib_read(mp, 0x70);
1253 p->bad_crc_event += mib_read(mp, 0x74);
1254 p->collision += mib_read(mp, 0x78);
1255 p->late_collision += mib_read(mp, 0x7c);
Sebastian Siewior57e8f262009-02-16 11:28:15 +00001256 spin_unlock_bh(&mp->mib_counters_lock);
Lennert Buytenhek4ff34952008-09-19 05:04:57 +02001257
1258 mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ);
1259}
1260
1261static void mib_counters_timer_wrapper(unsigned long _mp)
1262{
1263 struct mv643xx_eth_private *mp = (void *)_mp;
1264
1265 mib_counters_update(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001266}
1267
1268
Lennert Buytenhek3e508032009-02-12 14:07:09 +00001269/* interrupt coalescing *****************************************************/
1270/*
1271 * Hardware coalescing parameters are set in units of 64 t_clk
1272 * cycles. I.e.:
1273 *
1274 * coal_delay_in_usec = 64000000 * register_value / t_clk_rate
1275 *
1276 * register_value = coal_delay_in_usec * t_clk_rate / 64000000
1277 *
1278 * In the ->set*() methods, we round the computed register value
1279 * to the nearest integer.
1280 */
1281static unsigned int get_rx_coal(struct mv643xx_eth_private *mp)
1282{
1283 u32 val = rdlp(mp, SDMA_CONFIG);
1284 u64 temp;
1285
1286 if (mp->shared->extended_rx_coal_limit)
1287 temp = ((val & 0x02000000) >> 10) | ((val & 0x003fff80) >> 7);
1288 else
1289 temp = (val & 0x003fff00) >> 8;
1290
1291 temp *= 64000000;
1292 do_div(temp, mp->shared->t_clk);
1293
1294 return (unsigned int)temp;
1295}
1296
1297static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int usec)
1298{
1299 u64 temp;
1300 u32 val;
1301
1302 temp = (u64)usec * mp->shared->t_clk;
1303 temp += 31999999;
1304 do_div(temp, 64000000);
1305
1306 val = rdlp(mp, SDMA_CONFIG);
1307 if (mp->shared->extended_rx_coal_limit) {
1308 if (temp > 0xffff)
1309 temp = 0xffff;
1310 val &= ~0x023fff80;
1311 val |= (temp & 0x8000) << 10;
1312 val |= (temp & 0x7fff) << 7;
1313 } else {
1314 if (temp > 0x3fff)
1315 temp = 0x3fff;
1316 val &= ~0x003fff00;
1317 val |= (temp & 0x3fff) << 8;
1318 }
1319 wrlp(mp, SDMA_CONFIG, val);
1320}
1321
1322static unsigned int get_tx_coal(struct mv643xx_eth_private *mp)
1323{
1324 u64 temp;
1325
1326 temp = (rdlp(mp, TX_FIFO_URGENT_THRESHOLD) & 0x3fff0) >> 4;
1327 temp *= 64000000;
1328 do_div(temp, mp->shared->t_clk);
1329
1330 return (unsigned int)temp;
1331}
1332
1333static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int usec)
1334{
1335 u64 temp;
1336
1337 temp = (u64)usec * mp->shared->t_clk;
1338 temp += 31999999;
1339 do_div(temp, 64000000);
1340
1341 if (temp > 0x3fff)
1342 temp = 0x3fff;
1343
1344 wrlp(mp, TX_FIFO_URGENT_THRESHOLD, temp << 4);
1345}
1346
1347
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001348/* ethtool ******************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +02001349struct mv643xx_eth_stats {
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001350 char stat_string[ETH_GSTRING_LEN];
1351 int sizeof_stat;
Lennert Buytenhek16820052008-06-01 11:40:29 +02001352 int netdev_off;
1353 int mp_off;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001354};
1355
Lennert Buytenhek16820052008-06-01 11:40:29 +02001356#define SSTAT(m) \
1357 { #m, FIELD_SIZEOF(struct net_device_stats, m), \
1358 offsetof(struct net_device, stats.m), -1 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001359
Lennert Buytenhek16820052008-06-01 11:40:29 +02001360#define MIBSTAT(m) \
1361 { #m, FIELD_SIZEOF(struct mib_counters, m), \
1362 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1363
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001364#define LROSTAT(m) \
1365 { #m, FIELD_SIZEOF(struct lro_counters, m), \
1366 -1, offsetof(struct mv643xx_eth_private, lro_counters.m) }
1367
Lennert Buytenhek16820052008-06-01 11:40:29 +02001368static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
1369 SSTAT(rx_packets),
1370 SSTAT(tx_packets),
1371 SSTAT(rx_bytes),
1372 SSTAT(tx_bytes),
1373 SSTAT(rx_errors),
1374 SSTAT(tx_errors),
1375 SSTAT(rx_dropped),
1376 SSTAT(tx_dropped),
1377 MIBSTAT(good_octets_received),
1378 MIBSTAT(bad_octets_received),
1379 MIBSTAT(internal_mac_transmit_err),
1380 MIBSTAT(good_frames_received),
1381 MIBSTAT(bad_frames_received),
1382 MIBSTAT(broadcast_frames_received),
1383 MIBSTAT(multicast_frames_received),
1384 MIBSTAT(frames_64_octets),
1385 MIBSTAT(frames_65_to_127_octets),
1386 MIBSTAT(frames_128_to_255_octets),
1387 MIBSTAT(frames_256_to_511_octets),
1388 MIBSTAT(frames_512_to_1023_octets),
1389 MIBSTAT(frames_1024_to_max_octets),
1390 MIBSTAT(good_octets_sent),
1391 MIBSTAT(good_frames_sent),
1392 MIBSTAT(excessive_collision),
1393 MIBSTAT(multicast_frames_sent),
1394 MIBSTAT(broadcast_frames_sent),
1395 MIBSTAT(unrec_mac_control_received),
1396 MIBSTAT(fc_sent),
1397 MIBSTAT(good_fc_received),
1398 MIBSTAT(bad_fc_received),
1399 MIBSTAT(undersize_received),
1400 MIBSTAT(fragments_received),
1401 MIBSTAT(oversize_received),
1402 MIBSTAT(jabber_received),
1403 MIBSTAT(mac_receive_error),
1404 MIBSTAT(bad_crc_event),
1405 MIBSTAT(collision),
1406 MIBSTAT(late_collision),
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001407 LROSTAT(lro_aggregated),
1408 LROSTAT(lro_flushed),
1409 LROSTAT(lro_no_desc),
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001410};
1411
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001412static int
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001413mv643xx_eth_get_settings_phy(struct mv643xx_eth_private *mp,
1414 struct ethtool_cmd *cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001415{
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001416 int err;
1417
Lennert Buytenheked944932008-08-26 13:34:19 +02001418 err = phy_read_status(mp->phy);
1419 if (err == 0)
1420 err = phy_ethtool_gset(mp->phy, cmd);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001421
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001422 /*
1423 * The MAC does not support 1000baseT_Half.
1424 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001425 cmd->supported &= ~SUPPORTED_1000baseT_Half;
1426 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1427
1428 return err;
1429}
1430
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001431static int
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001432mv643xx_eth_get_settings_phyless(struct mv643xx_eth_private *mp,
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001433 struct ethtool_cmd *cmd)
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001434{
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001435 u32 port_status;
1436
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001437 port_status = rdlp(mp, PORT_STATUS);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001438
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001439 cmd->supported = SUPPORTED_MII;
1440 cmd->advertising = ADVERTISED_MII;
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001441 switch (port_status & PORT_SPEED_MASK) {
1442 case PORT_SPEED_10:
1443 cmd->speed = SPEED_10;
1444 break;
1445 case PORT_SPEED_100:
1446 cmd->speed = SPEED_100;
1447 break;
1448 case PORT_SPEED_1000:
1449 cmd->speed = SPEED_1000;
1450 break;
1451 default:
1452 cmd->speed = -1;
1453 break;
1454 }
1455 cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001456 cmd->port = PORT_MII;
1457 cmd->phy_address = 0;
1458 cmd->transceiver = XCVR_INTERNAL;
1459 cmd->autoneg = AUTONEG_DISABLE;
1460 cmd->maxtxpkt = 1;
1461 cmd->maxrxpkt = 1;
1462
1463 return 0;
1464}
1465
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001466static int
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001467mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1468{
1469 struct mv643xx_eth_private *mp = netdev_priv(dev);
1470
1471 if (mp->phy != NULL)
1472 return mv643xx_eth_get_settings_phy(mp, cmd);
1473 else
1474 return mv643xx_eth_get_settings_phyless(mp, cmd);
1475}
1476
1477static int
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001478mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001479{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001480 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001481
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001482 if (mp->phy == NULL)
1483 return -EINVAL;
1484
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001485 /*
1486 * The MAC does not support 1000baseT_Half.
1487 */
1488 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1489
Lennert Buytenheked944932008-08-26 13:34:19 +02001490 return phy_ethtool_sset(mp->phy, cmd);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001491}
1492
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001493static void mv643xx_eth_get_drvinfo(struct net_device *dev,
1494 struct ethtool_drvinfo *drvinfo)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001495{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001496 strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
1497 strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001498 strncpy(drvinfo->fw_version, "N/A", 32);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001499 strncpy(drvinfo->bus_info, "platform", 32);
Lennert Buytenhek16820052008-06-01 11:40:29 +02001500 drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001501}
1502
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001503static int mv643xx_eth_nway_reset(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001504{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001505 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001506
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001507 if (mp->phy == NULL)
1508 return -EINVAL;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001509
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001510 return genphy_restart_aneg(mp->phy);
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001511}
1512
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001513static u32 mv643xx_eth_get_link(struct net_device *dev)
1514{
Lennert Buytenheked944932008-08-26 13:34:19 +02001515 return !!netif_carrier_ok(dev);
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001516}
1517
Lennert Buytenhek3e508032009-02-12 14:07:09 +00001518static int
1519mv643xx_eth_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
1520{
1521 struct mv643xx_eth_private *mp = netdev_priv(dev);
1522
1523 ec->rx_coalesce_usecs = get_rx_coal(mp);
1524 ec->tx_coalesce_usecs = get_tx_coal(mp);
1525
1526 return 0;
1527}
1528
1529static int
1530mv643xx_eth_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
1531{
1532 struct mv643xx_eth_private *mp = netdev_priv(dev);
1533
1534 set_rx_coal(mp, ec->rx_coalesce_usecs);
1535 set_tx_coal(mp, ec->tx_coalesce_usecs);
1536
1537 return 0;
1538}
1539
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001540static void
1541mv643xx_eth_get_ringparam(struct net_device *dev, struct ethtool_ringparam *er)
1542{
1543 struct mv643xx_eth_private *mp = netdev_priv(dev);
1544
1545 er->rx_max_pending = 4096;
1546 er->tx_max_pending = 4096;
1547 er->rx_mini_max_pending = 0;
1548 er->rx_jumbo_max_pending = 0;
1549
1550 er->rx_pending = mp->rx_ring_size;
1551 er->tx_pending = mp->tx_ring_size;
1552 er->rx_mini_pending = 0;
1553 er->rx_jumbo_pending = 0;
1554}
1555
1556static int
1557mv643xx_eth_set_ringparam(struct net_device *dev, struct ethtool_ringparam *er)
1558{
1559 struct mv643xx_eth_private *mp = netdev_priv(dev);
1560
1561 if (er->rx_mini_pending || er->rx_jumbo_pending)
1562 return -EINVAL;
1563
1564 mp->rx_ring_size = er->rx_pending < 4096 ? er->rx_pending : 4096;
1565 mp->tx_ring_size = er->tx_pending < 4096 ? er->tx_pending : 4096;
1566
1567 if (netif_running(dev)) {
1568 mv643xx_eth_stop(dev);
1569 if (mv643xx_eth_open(dev)) {
1570 dev_printk(KERN_ERR, &dev->dev,
1571 "fatal error on re-opening device after "
1572 "ring param change\n");
1573 return -ENOMEM;
1574 }
1575 }
1576
1577 return 0;
1578}
1579
Lennert Buytenhekd888b372009-02-12 14:07:56 +00001580static u32
1581mv643xx_eth_get_rx_csum(struct net_device *dev)
1582{
1583 struct mv643xx_eth_private *mp = netdev_priv(dev);
1584
1585 return !!(rdlp(mp, PORT_CONFIG) & 0x02000000);
1586}
1587
1588static int
1589mv643xx_eth_set_rx_csum(struct net_device *dev, u32 rx_csum)
1590{
1591 struct mv643xx_eth_private *mp = netdev_priv(dev);
1592
1593 wrlp(mp, PORT_CONFIG, rx_csum ? 0x02000000 : 0x00000000);
1594
1595 return 0;
1596}
1597
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001598static void mv643xx_eth_get_strings(struct net_device *dev,
1599 uint32_t stringset, uint8_t *data)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001600{
1601 int i;
1602
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001603 if (stringset == ETH_SS_STATS) {
1604 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001605 memcpy(data + i * ETH_GSTRING_LEN,
Lennert Buytenhek16820052008-06-01 11:40:29 +02001606 mv643xx_eth_stats[i].stat_string,
Lennert Buytenheke5371492008-06-01 02:18:13 +02001607 ETH_GSTRING_LEN);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001608 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001609 }
1610}
1611
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001612static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
1613 struct ethtool_stats *stats,
1614 uint64_t *data)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001615{
Lennert Buytenhekb9873842008-08-24 05:59:16 +02001616 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001617 int i;
1618
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02001619 mv643xx_eth_get_stats(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001620 mib_counters_update(mp);
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001621 mv643xx_eth_grab_lro_stats(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001622
Lennert Buytenhek16820052008-06-01 11:40:29 +02001623 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1624 const struct mv643xx_eth_stats *stat;
1625 void *p;
1626
1627 stat = mv643xx_eth_stats + i;
1628
1629 if (stat->netdev_off >= 0)
1630 p = ((void *)mp->dev) + stat->netdev_off;
1631 else
1632 p = ((void *)mp) + stat->mp_off;
1633
1634 data[i] = (stat->sizeof_stat == 8) ?
1635 *(uint64_t *)p : *(uint32_t *)p;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001636 }
1637}
1638
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001639static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001640{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001641 if (sset == ETH_SS_STATS)
Lennert Buytenhek16820052008-06-01 11:40:29 +02001642 return ARRAY_SIZE(mv643xx_eth_stats);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001643
1644 return -EOPNOTSUPP;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001645}
1646
Lennert Buytenheke5371492008-06-01 02:18:13 +02001647static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001648 .get_settings = mv643xx_eth_get_settings,
1649 .set_settings = mv643xx_eth_set_settings,
1650 .get_drvinfo = mv643xx_eth_get_drvinfo,
1651 .nway_reset = mv643xx_eth_nway_reset,
1652 .get_link = mv643xx_eth_get_link,
Lennert Buytenhek3e508032009-02-12 14:07:09 +00001653 .get_coalesce = mv643xx_eth_get_coalesce,
1654 .set_coalesce = mv643xx_eth_set_coalesce,
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001655 .get_ringparam = mv643xx_eth_get_ringparam,
1656 .set_ringparam = mv643xx_eth_set_ringparam,
Lennert Buytenhekd888b372009-02-12 14:07:56 +00001657 .get_rx_csum = mv643xx_eth_get_rx_csum,
1658 .set_rx_csum = mv643xx_eth_set_rx_csum,
Lennert Buytenhekb8df1842009-02-12 14:08:07 +00001659 .set_tx_csum = ethtool_op_set_tx_csum,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001660 .set_sg = ethtool_op_set_sg,
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001661 .get_strings = mv643xx_eth_get_strings,
1662 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001663 .get_flags = ethtool_op_get_flags,
1664 .set_flags = ethtool_op_set_flags,
Lennert Buytenheke5371492008-06-01 02:18:13 +02001665 .get_sset_count = mv643xx_eth_get_sset_count,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001666};
1667
1668
1669/* address handling *********************************************************/
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001670static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001671{
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001672 unsigned int mac_h = rdlp(mp, MAC_ADDR_HIGH);
1673 unsigned int mac_l = rdlp(mp, MAC_ADDR_LOW);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001674
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001675 addr[0] = (mac_h >> 24) & 0xff;
1676 addr[1] = (mac_h >> 16) & 0xff;
1677 addr[2] = (mac_h >> 8) & 0xff;
1678 addr[3] = mac_h & 0xff;
1679 addr[4] = (mac_l >> 8) & 0xff;
1680 addr[5] = mac_l & 0xff;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001681}
1682
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001683static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001684{
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001685 wrlp(mp, MAC_ADDR_HIGH,
1686 (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]);
1687 wrlp(mp, MAC_ADDR_LOW, (addr[4] << 8) | addr[5]);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001688}
1689
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001690static u32 uc_addr_filter_mask(struct net_device *dev)
1691{
Jiri Pirkoccffad22009-05-22 23:22:17 +00001692 struct netdev_hw_addr *ha;
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001693 u32 nibbles;
1694
1695 if (dev->flags & IFF_PROMISC)
1696 return 0;
1697
1698 nibbles = 1 << (dev->dev_addr[5] & 0x0f);
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08001699 netdev_for_each_uc_addr(ha, dev) {
Jiri Pirkoccffad22009-05-22 23:22:17 +00001700 if (memcmp(dev->dev_addr, ha->addr, 5))
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001701 return 0;
Jiri Pirkoccffad22009-05-22 23:22:17 +00001702 if ((dev->dev_addr[5] ^ ha->addr[5]) & 0xf0)
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001703 return 0;
1704
Jiri Pirkoccffad22009-05-22 23:22:17 +00001705 nibbles |= 1 << (ha->addr[5] & 0x0f);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001706 }
1707
1708 return nibbles;
1709}
1710
1711static void mv643xx_eth_program_unicast_filter(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001712{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001713 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001714 u32 port_config;
1715 u32 nibbles;
1716 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001717
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001718 uc_addr_set(mp, dev->dev_addr);
1719
Prabhanjan Sarnaik6877f542009-06-18 11:35:02 +00001720 port_config = rdlp(mp, PORT_CONFIG) & ~UNICAST_PROMISCUOUS_MODE;
1721
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001722 nibbles = uc_addr_filter_mask(dev);
1723 if (!nibbles) {
1724 port_config |= UNICAST_PROMISCUOUS_MODE;
Prabhanjan Sarnaik6877f542009-06-18 11:35:02 +00001725 nibbles = 0xffff;
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001726 }
1727
1728 for (i = 0; i < 16; i += 4) {
1729 int off = UNICAST_TABLE(mp->port_num) + i;
1730 u32 v;
1731
1732 v = 0;
1733 if (nibbles & 1)
1734 v |= 0x00000001;
1735 if (nibbles & 2)
1736 v |= 0x00000100;
1737 if (nibbles & 4)
1738 v |= 0x00010000;
1739 if (nibbles & 8)
1740 v |= 0x01000000;
1741 nibbles >>= 4;
1742
1743 wrl(mp, off, v);
1744 }
1745
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001746 wrlp(mp, PORT_CONFIG, port_config);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001747}
1748
Lennert Buytenhek69876562008-06-01 11:43:32 +02001749static int addr_crc(unsigned char *addr)
1750{
1751 int crc = 0;
1752 int i;
1753
1754 for (i = 0; i < 6; i++) {
1755 int j;
1756
1757 crc = (crc ^ addr[i]) << 8;
1758 for (j = 7; j >= 0; j--) {
1759 if (crc & (0x100 << j))
1760 crc ^= 0x107 << j;
1761 }
1762 }
1763
1764 return crc;
1765}
1766
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001767static void mv643xx_eth_program_multicast_filter(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001768{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001769 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001770 u32 *mc_spec;
1771 u32 *mc_other;
Jiri Pirko22bedad2010-04-01 21:22:57 +00001772 struct netdev_hw_addr *ha;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001773 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001774
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001775 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001776 int port_num;
1777 u32 accept;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001778
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001779oom:
1780 port_num = mp->port_num;
1781 accept = 0x01010101;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001782 for (i = 0; i < 0x100; i += 4) {
1783 wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
1784 wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001785 }
1786 return;
1787 }
1788
Sebastian Siewior82a5bd62009-02-14 23:26:18 +00001789 mc_spec = kmalloc(0x200, GFP_ATOMIC);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001790 if (mc_spec == NULL)
1791 goto oom;
1792 mc_other = mc_spec + (0x100 >> 2);
1793
1794 memset(mc_spec, 0, 0x100);
1795 memset(mc_other, 0, 0x100);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001796
Jiri Pirko22bedad2010-04-01 21:22:57 +00001797 netdev_for_each_mc_addr(ha, dev) {
1798 u8 *a = ha->addr;
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001799 u32 *table;
1800 int entry;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001801
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001802 if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001803 table = mc_spec;
1804 entry = a[5];
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001805 } else {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001806 table = mc_other;
1807 entry = addr_crc(a);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001808 }
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001809
Lennert Buytenhek2b448332009-01-19 17:17:18 -08001810 table[entry >> 2] |= 1 << (8 * (entry & 3));
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001811 }
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001812
1813 for (i = 0; i < 0x100; i += 4) {
1814 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, mc_spec[i >> 2]);
1815 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, mc_other[i >> 2]);
1816 }
1817
1818 kfree(mc_spec);
1819}
1820
1821static void mv643xx_eth_set_rx_mode(struct net_device *dev)
1822{
1823 mv643xx_eth_program_unicast_filter(dev);
1824 mv643xx_eth_program_multicast_filter(dev);
1825}
1826
1827static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
1828{
1829 struct sockaddr *sa = addr;
1830
Denis Kirjanova29ec082009-12-08 20:36:00 -08001831 if (!is_valid_ether_addr(sa->sa_data))
1832 return -EINVAL;
1833
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001834 memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN);
1835
1836 netif_addr_lock_bh(dev);
1837 mv643xx_eth_program_unicast_filter(dev);
1838 netif_addr_unlock_bh(dev);
1839
1840 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001841}
1842
1843
1844/* rx/tx queue initialisation ***********************************************/
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001845static int rxq_init(struct mv643xx_eth_private *mp, int index)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001846{
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001847 struct rx_queue *rxq = mp->rxq + index;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001848 struct rx_desc *rx_desc;
1849 int size;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001850 int i;
1851
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001852 rxq->index = index;
1853
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001854 rxq->rx_ring_size = mp->rx_ring_size;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001855
1856 rxq->rx_desc_count = 0;
1857 rxq->rx_curr_desc = 0;
1858 rxq->rx_used_desc = 0;
1859
1860 size = rxq->rx_ring_size * sizeof(struct rx_desc);
1861
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001862 if (index == 0 && size <= mp->rx_desc_sram_size) {
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001863 rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
1864 mp->rx_desc_sram_size);
1865 rxq->rx_desc_dma = mp->rx_desc_sram_addr;
1866 } else {
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07001867 rxq->rx_desc_area = dma_alloc_coherent(mp->dev->dev.parent,
1868 size, &rxq->rx_desc_dma,
1869 GFP_KERNEL);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001870 }
1871
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001872 if (rxq->rx_desc_area == NULL) {
1873 dev_printk(KERN_ERR, &mp->dev->dev,
1874 "can't allocate rx ring (%d bytes)\n", size);
1875 goto out;
1876 }
1877 memset(rxq->rx_desc_area, 0, size);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001878
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001879 rxq->rx_desc_area_size = size;
1880 rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
1881 GFP_KERNEL);
1882 if (rxq->rx_skb == NULL) {
1883 dev_printk(KERN_ERR, &mp->dev->dev,
1884 "can't allocate rx skb ring\n");
1885 goto out_free;
1886 }
1887
1888 rx_desc = (struct rx_desc *)rxq->rx_desc_area;
1889 for (i = 0; i < rxq->rx_ring_size; i++) {
Lennert Buytenhek9da78742008-08-23 23:45:28 +02001890 int nexti;
1891
1892 nexti = i + 1;
1893 if (nexti == rxq->rx_ring_size)
1894 nexti = 0;
1895
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001896 rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
1897 nexti * sizeof(struct rx_desc);
1898 }
1899
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001900 rxq->lro_mgr.dev = mp->dev;
1901 memset(&rxq->lro_mgr.stats, 0, sizeof(rxq->lro_mgr.stats));
1902 rxq->lro_mgr.features = LRO_F_NAPI;
1903 rxq->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1904 rxq->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1905 rxq->lro_mgr.max_desc = ARRAY_SIZE(rxq->lro_arr);
1906 rxq->lro_mgr.max_aggr = 32;
1907 rxq->lro_mgr.frag_align_pad = 0;
1908 rxq->lro_mgr.lro_arr = rxq->lro_arr;
1909 rxq->lro_mgr.get_skb_header = mv643xx_get_skb_header;
1910
1911 memset(&rxq->lro_arr, 0, sizeof(rxq->lro_arr));
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001912
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001913 return 0;
1914
1915
1916out_free:
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001917 if (index == 0 && size <= mp->rx_desc_sram_size)
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001918 iounmap(rxq->rx_desc_area);
1919 else
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07001920 dma_free_coherent(mp->dev->dev.parent, size,
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001921 rxq->rx_desc_area,
1922 rxq->rx_desc_dma);
1923
1924out:
1925 return -ENOMEM;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001926}
1927
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001928static void rxq_deinit(struct rx_queue *rxq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001929{
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001930 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
1931 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001932
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001933 rxq_disable(rxq);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001934
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001935 for (i = 0; i < rxq->rx_ring_size; i++) {
1936 if (rxq->rx_skb[i]) {
1937 dev_kfree_skb(rxq->rx_skb[i]);
1938 rxq->rx_desc_count--;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001939 }
1940 }
1941
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001942 if (rxq->rx_desc_count) {
1943 dev_printk(KERN_ERR, &mp->dev->dev,
1944 "error freeing rx ring -- %d skbs stuck\n",
1945 rxq->rx_desc_count);
1946 }
1947
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001948 if (rxq->index == 0 &&
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001949 rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001950 iounmap(rxq->rx_desc_area);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001951 else
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07001952 dma_free_coherent(mp->dev->dev.parent, rxq->rx_desc_area_size,
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001953 rxq->rx_desc_area, rxq->rx_desc_dma);
1954
1955 kfree(rxq->rx_skb);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001956}
1957
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001958static int txq_init(struct mv643xx_eth_private *mp, int index)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001959{
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001960 struct tx_queue *txq = mp->txq + index;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001961 struct tx_desc *tx_desc;
1962 int size;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001963 int i;
1964
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001965 txq->index = index;
1966
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001967 txq->tx_ring_size = mp->tx_ring_size;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001968
1969 txq->tx_desc_count = 0;
1970 txq->tx_curr_desc = 0;
1971 txq->tx_used_desc = 0;
1972
1973 size = txq->tx_ring_size * sizeof(struct tx_desc);
1974
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001975 if (index == 0 && size <= mp->tx_desc_sram_size) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001976 txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
1977 mp->tx_desc_sram_size);
1978 txq->tx_desc_dma = mp->tx_desc_sram_addr;
1979 } else {
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07001980 txq->tx_desc_area = dma_alloc_coherent(mp->dev->dev.parent,
1981 size, &txq->tx_desc_dma,
1982 GFP_KERNEL);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001983 }
1984
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001985 if (txq->tx_desc_area == NULL) {
1986 dev_printk(KERN_ERR, &mp->dev->dev,
1987 "can't allocate tx ring (%d bytes)\n", size);
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +02001988 return -ENOMEM;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001989 }
1990 memset(txq->tx_desc_area, 0, size);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001991
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001992 txq->tx_desc_area_size = size;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001993
1994 tx_desc = (struct tx_desc *)txq->tx_desc_area;
1995 for (i = 0; i < txq->tx_ring_size; i++) {
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02001996 struct tx_desc *txd = tx_desc + i;
Lennert Buytenhek9da78742008-08-23 23:45:28 +02001997 int nexti;
1998
1999 nexti = i + 1;
2000 if (nexti == txq->tx_ring_size)
2001 nexti = 0;
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02002002
2003 txd->cmd_sts = 0;
2004 txd->next_desc_ptr = txq->tx_desc_dma +
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002005 nexti * sizeof(struct tx_desc);
2006 }
2007
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +02002008 skb_queue_head_init(&txq->tx_skb);
2009
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002010 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002011}
2012
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002013static void txq_deinit(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002014{
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002015 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002016
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002017 txq_disable(txq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002018 txq_reclaim(txq, txq->tx_ring_size, 1);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002019
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002020 BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002021
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002022 if (txq->index == 0 &&
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002023 txq->tx_desc_area_size <= mp->tx_desc_sram_size)
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002024 iounmap(txq->tx_desc_area);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002025 else
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07002026 dma_free_coherent(mp->dev->dev.parent, txq->tx_desc_area_size,
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002027 txq->tx_desc_area, txq->tx_desc_dma);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002028}
2029
2030
2031/* netdev ops and related ***************************************************/
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002032static int mv643xx_eth_collect_events(struct mv643xx_eth_private *mp)
2033{
2034 u32 int_cause;
2035 u32 int_cause_ext;
2036
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002037 int_cause = rdlp(mp, INT_CAUSE) & mp->int_mask;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002038 if (int_cause == 0)
2039 return 0;
2040
2041 int_cause_ext = 0;
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002042 if (int_cause & INT_EXT) {
2043 int_cause &= ~INT_EXT;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002044 int_cause_ext = rdlp(mp, INT_CAUSE_EXT);
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002045 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002046
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002047 if (int_cause) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002048 wrlp(mp, INT_CAUSE, ~int_cause);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002049 mp->work_tx_end |= ((int_cause & INT_TX_END) >> 19) &
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002050 ~(rdlp(mp, TXQ_COMMAND) & 0xff);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002051 mp->work_rx |= (int_cause & INT_RX) >> 2;
2052 }
2053
2054 int_cause_ext &= INT_EXT_LINK_PHY | INT_EXT_TX;
2055 if (int_cause_ext) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002056 wrlp(mp, INT_CAUSE_EXT, ~int_cause_ext);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002057 if (int_cause_ext & INT_EXT_LINK_PHY)
2058 mp->work_link = 1;
2059 mp->work_tx |= int_cause_ext & INT_EXT_TX;
2060 }
2061
2062 return 1;
2063}
2064
2065static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
2066{
2067 struct net_device *dev = (struct net_device *)dev_id;
2068 struct mv643xx_eth_private *mp = netdev_priv(dev);
2069
2070 if (unlikely(!mv643xx_eth_collect_events(mp)))
2071 return IRQ_NONE;
2072
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002073 wrlp(mp, INT_MASK, 0);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002074 napi_schedule(&mp->napi);
2075
2076 return IRQ_HANDLED;
2077}
2078
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002079static void handle_link_event(struct mv643xx_eth_private *mp)
2080{
2081 struct net_device *dev = mp->dev;
2082 u32 port_status;
2083 int speed;
2084 int duplex;
2085 int fc;
2086
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002087 port_status = rdlp(mp, PORT_STATUS);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002088 if (!(port_status & LINK_UP)) {
2089 if (netif_carrier_ok(dev)) {
2090 int i;
2091
2092 printk(KERN_INFO "%s: link down\n", dev->name);
2093
2094 netif_carrier_off(dev);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002095
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002096 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002097 struct tx_queue *txq = mp->txq + i;
2098
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002099 txq_reclaim(txq, txq->tx_ring_size, 1);
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002100 txq_reset_hw_ptr(txq);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002101 }
2102 }
2103 return;
2104 }
2105
2106 switch (port_status & PORT_SPEED_MASK) {
2107 case PORT_SPEED_10:
2108 speed = 10;
2109 break;
2110 case PORT_SPEED_100:
2111 speed = 100;
2112 break;
2113 case PORT_SPEED_1000:
2114 speed = 1000;
2115 break;
2116 default:
2117 speed = -1;
2118 break;
2119 }
2120 duplex = (port_status & FULL_DUPLEX) ? 1 : 0;
2121 fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0;
2122
2123 printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, "
2124 "flow control %sabled\n", dev->name,
2125 speed, duplex ? "full" : "half",
2126 fc ? "en" : "dis");
2127
Lennert Buytenhek4fdeca32008-08-28 05:39:13 +02002128 if (!netif_carrier_ok(dev))
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002129 netif_carrier_on(dev);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002130}
2131
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002132static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002133{
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002134 struct mv643xx_eth_private *mp;
2135 int work_done;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002136
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002137 mp = container_of(napi, struct mv643xx_eth_private, napi);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002138
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002139 if (unlikely(mp->oom)) {
2140 mp->oom = 0;
2141 del_timer(&mp->rx_oom);
2142 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002143
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002144 work_done = 0;
2145 while (work_done < budget) {
2146 u8 queue_mask;
2147 int queue;
2148 int work_tbd;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002149
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002150 if (mp->work_link) {
2151 mp->work_link = 0;
2152 handle_link_event(mp);
Lennert Buytenhek26ef1f12009-05-06 03:01:10 +00002153 work_done++;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002154 continue;
Lennert Buytenhek226bb6b2008-06-02 01:47:21 +02002155 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002156
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002157 queue_mask = mp->work_tx | mp->work_tx_end | mp->work_rx;
2158 if (likely(!mp->oom))
2159 queue_mask |= mp->work_rx_refill;
2160
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002161 if (!queue_mask) {
2162 if (mv643xx_eth_collect_events(mp))
2163 continue;
2164 break;
2165 }
2166
2167 queue = fls(queue_mask) - 1;
2168 queue_mask = 1 << queue;
2169
2170 work_tbd = budget - work_done;
2171 if (work_tbd > 16)
2172 work_tbd = 16;
2173
2174 if (mp->work_tx_end & queue_mask) {
2175 txq_kick(mp->txq + queue);
2176 } else if (mp->work_tx & queue_mask) {
2177 work_done += txq_reclaim(mp->txq + queue, work_tbd, 0);
2178 txq_maybe_wake(mp->txq + queue);
2179 } else if (mp->work_rx & queue_mask) {
2180 work_done += rxq_process(mp->rxq + queue, work_tbd);
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002181 } else if (!mp->oom && (mp->work_rx_refill & queue_mask)) {
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002182 work_done += rxq_refill(mp->rxq + queue, work_tbd);
2183 } else {
2184 BUG();
2185 }
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002186 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002187
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002188 if (work_done < budget) {
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002189 if (mp->oom)
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002190 mod_timer(&mp->rx_oom, jiffies + (HZ / 10));
2191 napi_complete(napi);
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002192 wrlp(mp, INT_MASK, mp->int_mask);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002193 }
2194
2195 return work_done;
2196}
2197
2198static inline void oom_timer_wrapper(unsigned long data)
2199{
2200 struct mv643xx_eth_private *mp = (void *)data;
2201
2202 napi_schedule(&mp->napi);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002203}
2204
Lennert Buytenheke5371492008-06-01 02:18:13 +02002205static void phy_reset(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002206{
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002207 int data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002208
Lennert Buytenheked944932008-08-26 13:34:19 +02002209 data = phy_read(mp->phy, MII_BMCR);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002210 if (data < 0)
2211 return;
2212
Lennert Buytenhek7f106c12008-07-15 02:28:47 +02002213 data |= BMCR_RESET;
Lennert Buytenheked944932008-08-26 13:34:19 +02002214 if (phy_write(mp->phy, MII_BMCR, data) < 0)
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002215 return;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002216
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002217 do {
Lennert Buytenheked944932008-08-26 13:34:19 +02002218 data = phy_read(mp->phy, MII_BMCR);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002219 } while (data >= 0 && data & BMCR_RESET);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002220}
2221
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002222static void port_start(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002223{
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002224 u32 pscr;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002225 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002226
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002227 /*
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02002228 * Perform PHY reset, if there is a PHY.
2229 */
Lennert Buytenheked944932008-08-26 13:34:19 +02002230 if (mp->phy != NULL) {
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02002231 struct ethtool_cmd cmd;
2232
2233 mv643xx_eth_get_settings(mp->dev, &cmd);
2234 phy_reset(mp);
2235 mv643xx_eth_set_settings(mp->dev, &cmd);
2236 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002237
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002238 /*
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002239 * Configure basic link parameters.
2240 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002241 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002242
2243 pscr |= SERIAL_PORT_ENABLE;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002244 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002245
2246 pscr |= DO_NOT_FORCE_LINK_FAIL;
Lennert Buytenheked944932008-08-26 13:34:19 +02002247 if (mp->phy == NULL)
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002248 pscr |= FORCE_LINK_PASS;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002249 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002250
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002251 /*
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002252 * Configure TX path and queues.
2253 */
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002254 tx_set_rate(mp, 1000000000, 16777216);
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002255 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002256 struct tx_queue *txq = mp->txq + i;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002257
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02002258 txq_reset_hw_ptr(txq);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002259 txq_set_rate(txq, 1000000000, 16777216);
2260 txq_set_fixed_prio_mode(txq);
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002261 }
2262
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002263 /*
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +02002264 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
Lennert Buytenhek170e7102008-09-19 02:58:50 +02002265 * frames to RX queue #0, and include the pseudo-header when
2266 * calculating receive checksums.
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +02002267 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002268 wrlp(mp, PORT_CONFIG, 0x02000000);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002269
Lennert Buytenhek376489a2008-06-01 01:17:44 +02002270 /*
2271 * Treat BPDUs as normal multicasts, and disable partition mode.
2272 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002273 wrlp(mp, PORT_CONFIG_EXT, 0x00000000);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002274
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002275 /*
Lennert Buytenhek5a893922009-03-13 15:48:02 -07002276 * Add configured unicast addresses to address filter table.
2277 */
2278 mv643xx_eth_program_unicast_filter(mp->dev);
2279
2280 /*
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002281 * Enable the receive queues.
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002282 */
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002283 for (i = 0; i < mp->rxq_count; i++) {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002284 struct rx_queue *rxq = mp->rxq + i;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002285 u32 addr;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002286
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002287 addr = (u32)rxq->rx_desc_dma;
2288 addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002289 wrlp(mp, RXQ_CURRENT_DESC_PTR(i), addr);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002290
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002291 rxq_enable(rxq);
2292 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002293}
2294
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002295static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private *mp)
2296{
2297 int skb_size;
2298
2299 /*
2300 * Reserve 2+14 bytes for an ethernet header (the hardware
2301 * automatically prepends 2 bytes of dummy data to each
2302 * received packet), 16 bytes for up to four VLAN tags, and
2303 * 4 bytes for the trailing FCS -- 36 bytes total.
2304 */
2305 skb_size = mp->dev->mtu + 36;
2306
2307 /*
2308 * Make sure that the skb size is a multiple of 8 bytes, as
2309 * the lower three bits of the receive descriptor's buffer
2310 * size field are ignored by the hardware.
2311 */
2312 mp->skb_size = (skb_size + 7) & ~7;
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +00002313
2314 /*
2315 * If NET_SKB_PAD is smaller than a cache line,
2316 * netdev_alloc_skb() will cause skb->data to be misaligned
2317 * to a cache line boundary. If this is the case, include
2318 * some extra space to allow re-aligning the data area.
2319 */
2320 mp->skb_size += SKB_DMA_REALIGN;
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002321}
2322
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002323static int mv643xx_eth_open(struct net_device *dev)
2324{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002325 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002326 int err;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002327 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002328
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002329 wrlp(mp, INT_CAUSE, 0);
2330 wrlp(mp, INT_CAUSE_EXT, 0);
2331 rdlp(mp, INT_CAUSE_EXT);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002332
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002333 err = request_irq(dev->irq, mv643xx_eth_irq,
Lennert Buytenhek2a1867a2008-08-23 23:43:38 +02002334 IRQF_SHARED, dev->name, dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002335 if (err) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002336 dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002337 return -EAGAIN;
2338 }
2339
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002340 mv643xx_eth_recalc_skb_size(mp);
2341
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002342 napi_enable(&mp->napi);
2343
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002344 skb_queue_head_init(&mp->rx_recycle);
2345
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002346 mp->int_mask = INT_EXT;
2347
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002348 for (i = 0; i < mp->rxq_count; i++) {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002349 err = rxq_init(mp, i);
2350 if (err) {
2351 while (--i >= 0)
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002352 rxq_deinit(mp->rxq + i);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002353 goto out;
2354 }
2355
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002356 rxq_refill(mp->rxq + i, INT_MAX);
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002357 mp->int_mask |= INT_RX_0 << i;
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002358 }
2359
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002360 if (mp->oom) {
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002361 mp->rx_oom.expires = jiffies + (HZ / 10);
2362 add_timer(&mp->rx_oom);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002363 }
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002364
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002365 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002366 err = txq_init(mp, i);
2367 if (err) {
2368 while (--i >= 0)
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002369 txq_deinit(mp->txq + i);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002370 goto out_free;
2371 }
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002372 mp->int_mask |= INT_TX_END_0 << i;
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002373 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002374
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002375 port_start(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002376
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002377 wrlp(mp, INT_MASK_EXT, INT_EXT_LINK_PHY | INT_EXT_TX);
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002378 wrlp(mp, INT_MASK, mp->int_mask);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002379
2380 return 0;
2381
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002382
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002383out_free:
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002384 for (i = 0; i < mp->rxq_count; i++)
2385 rxq_deinit(mp->rxq + i);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002386out:
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002387 free_irq(dev->irq, dev);
2388
2389 return err;
2390}
2391
Lennert Buytenheke5371492008-06-01 02:18:13 +02002392static void port_reset(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002393{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002394 unsigned int data;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002395 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002396
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002397 for (i = 0; i < mp->rxq_count; i++)
2398 rxq_disable(mp->rxq + i);
2399 for (i = 0; i < mp->txq_count; i++)
2400 txq_disable(mp->txq + i);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002401
2402 while (1) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002403 u32 ps = rdlp(mp, PORT_STATUS);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002404
2405 if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY)
2406 break;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002407 udelay(10);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002408 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002409
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002410 /* Reset the Enable bit in the Configuration Register */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002411 data = rdlp(mp, PORT_SERIAL_CONTROL);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002412 data &= ~(SERIAL_PORT_ENABLE |
2413 DO_NOT_FORCE_LINK_FAIL |
2414 FORCE_LINK_PASS);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002415 wrlp(mp, PORT_SERIAL_CONTROL, data);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002416}
2417
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002418static int mv643xx_eth_stop(struct net_device *dev)
2419{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002420 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002421 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002422
Gabriel Paubertfe65e702009-01-19 17:18:09 -08002423 wrlp(mp, INT_MASK_EXT, 0x00000000);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002424 wrlp(mp, INT_MASK, 0x00000000);
2425 rdlp(mp, INT_MASK);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002426
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002427 napi_disable(&mp->napi);
Lennert Buytenhek78fff832008-08-24 01:03:57 +02002428
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002429 del_timer_sync(&mp->rx_oom);
2430
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002431 netif_carrier_off(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002432
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002433 free_irq(dev->irq, dev);
2434
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +02002435 port_reset(mp);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02002436 mv643xx_eth_get_stats(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002437 mib_counters_update(mp);
Sebastian Siewior57e8f262009-02-16 11:28:15 +00002438 del_timer_sync(&mp->mib_counters_timer);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002439
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002440 skb_queue_purge(&mp->rx_recycle);
2441
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002442 for (i = 0; i < mp->rxq_count; i++)
2443 rxq_deinit(mp->rxq + i);
2444 for (i = 0; i < mp->txq_count; i++)
2445 txq_deinit(mp->txq + i);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002446
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002447 return 0;
2448}
2449
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002450static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002451{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002452 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002453
Lennert Buytenheked944932008-08-26 13:34:19 +02002454 if (mp->phy != NULL)
2455 return phy_mii_ioctl(mp->phy, if_mii(ifr), cmd);
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02002456
2457 return -EOPNOTSUPP;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002458}
2459
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002460static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
2461{
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002462 struct mv643xx_eth_private *mp = netdev_priv(dev);
2463
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002464 if (new_mtu < 64 || new_mtu > 9500)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002465 return -EINVAL;
2466
2467 dev->mtu = new_mtu;
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002468 mv643xx_eth_recalc_skb_size(mp);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002469 tx_set_rate(mp, 1000000000, 16777216);
2470
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002471 if (!netif_running(dev))
2472 return 0;
2473
2474 /*
2475 * Stop and then re-open the interface. This will allocate RX
2476 * skbs of the new MTU.
2477 * There is a possible danger that the open will not succeed,
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002478 * due to memory being full.
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002479 */
2480 mv643xx_eth_stop(dev);
2481 if (mv643xx_eth_open(dev)) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002482 dev_printk(KERN_ERR, &dev->dev,
2483 "fatal error on re-opening device after "
2484 "MTU change\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002485 }
2486
2487 return 0;
2488}
2489
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002490static void tx_timeout_task(struct work_struct *ugly)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002491{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002492 struct mv643xx_eth_private *mp;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002493
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002494 mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
2495 if (netif_running(mp->dev)) {
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002496 netif_tx_stop_all_queues(mp->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002497 port_reset(mp);
2498 port_start(mp);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002499 netif_tx_wake_all_queues(mp->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002500 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002501}
2502
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002503static void mv643xx_eth_tx_timeout(struct net_device *dev)
2504{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002505 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002506
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002507 dev_printk(KERN_INFO, &dev->dev, "tx timeout\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002508
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002509 schedule_work(&mp->tx_timeout_task);
2510}
2511
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002512#ifdef CONFIG_NET_POLL_CONTROLLER
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002513static void mv643xx_eth_netpoll(struct net_device *dev)
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002514{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002515 struct mv643xx_eth_private *mp = netdev_priv(dev);
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002516
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002517 wrlp(mp, INT_MASK, 0x00000000);
2518 rdlp(mp, INT_MASK);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07002519
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002520 mv643xx_eth_irq(dev->irq, dev);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07002521
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002522 wrlp(mp, INT_MASK, mp->int_mask);
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002523}
2524#endif
2525
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002526
2527/* platform glue ************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +02002528static void
2529mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
2530 struct mbus_dram_target_info *dram)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002531{
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +02002532 void __iomem *base = msp->base;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002533 u32 win_enable;
2534 u32 win_protect;
2535 int i;
2536
2537 for (i = 0; i < 6; i++) {
2538 writel(0, base + WINDOW_BASE(i));
2539 writel(0, base + WINDOW_SIZE(i));
2540 if (i < 4)
2541 writel(0, base + WINDOW_REMAP_HIGH(i));
2542 }
2543
2544 win_enable = 0x3f;
2545 win_protect = 0;
2546
2547 for (i = 0; i < dram->num_cs; i++) {
2548 struct mbus_dram_window *cs = dram->cs + i;
2549
2550 writel((cs->base & 0xffff0000) |
2551 (cs->mbus_attr << 8) |
2552 dram->mbus_dram_target_id, base + WINDOW_BASE(i));
2553 writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
2554
2555 win_enable &= ~(1 << i);
2556 win_protect |= 3 << (2 * i);
2557 }
2558
2559 writel(win_enable, base + WINDOW_BAR_ENABLE);
2560 msp->win_protect = win_protect;
2561}
2562
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002563static void infer_hw_params(struct mv643xx_eth_shared_private *msp)
2564{
2565 /*
2566 * Check whether we have a 14-bit coal limit field in bits
2567 * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
2568 * SDMA config register.
2569 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002570 writel(0x02000000, msp->base + 0x0400 + SDMA_CONFIG);
2571 if (readl(msp->base + 0x0400 + SDMA_CONFIG) & 0x02000000)
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002572 msp->extended_rx_coal_limit = 1;
2573 else
2574 msp->extended_rx_coal_limit = 0;
Lennert Buytenhek1e881592008-06-02 01:57:36 +02002575
2576 /*
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002577 * Check whether the MAC supports TX rate control, and if
2578 * yes, whether its associated registers are in the old or
2579 * the new place.
Lennert Buytenhek1e881592008-06-02 01:57:36 +02002580 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002581 writel(1, msp->base + 0x0400 + TX_BW_MTU_MOVED);
2582 if (readl(msp->base + 0x0400 + TX_BW_MTU_MOVED) & 1) {
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002583 msp->tx_bw_control = TX_BW_CONTROL_NEW_LAYOUT;
2584 } else {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002585 writel(7, msp->base + 0x0400 + TX_BW_RATE);
2586 if (readl(msp->base + 0x0400 + TX_BW_RATE) & 7)
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002587 msp->tx_bw_control = TX_BW_CONTROL_OLD_LAYOUT;
2588 else
2589 msp->tx_bw_control = TX_BW_CONTROL_ABSENT;
2590 }
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002591}
2592
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002593static int mv643xx_eth_shared_probe(struct platform_device *pdev)
2594{
Lennert Buytenhek10a99482008-11-20 03:57:16 -08002595 static int mv643xx_eth_version_printed;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002596 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
Lennert Buytenheke5371492008-06-01 02:18:13 +02002597 struct mv643xx_eth_shared_private *msp;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002598 struct resource *res;
2599 int ret;
2600
Lennert Buytenheke5371492008-06-01 02:18:13 +02002601 if (!mv643xx_eth_version_printed++)
Lennert Buytenhek7dde1542008-07-15 12:20:30 +02002602 printk(KERN_NOTICE "MV-643xx 10/100/1000 ethernet "
2603 "driver version %s\n", mv643xx_eth_driver_version);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002604
2605 ret = -EINVAL;
2606 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2607 if (res == NULL)
2608 goto out;
2609
2610 ret = -ENOMEM;
Julia Lawallbeae22e2010-05-13 10:00:22 +00002611 msp = kzalloc(sizeof(*msp), GFP_KERNEL);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002612 if (msp == NULL)
2613 goto out;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002614
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +02002615 msp->base = ioremap(res->start, res->end - res->start + 1);
2616 if (msp->base == NULL)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002617 goto out_free;
2618
Lennert Buytenheked944932008-08-26 13:34:19 +02002619 /*
2620 * Set up and register SMI bus.
2621 */
2622 if (pd == NULL || pd->shared_smi == NULL) {
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002623 msp->smi_bus = mdiobus_alloc();
2624 if (msp->smi_bus == NULL)
Lennert Buytenheked944932008-08-26 13:34:19 +02002625 goto out_unmap;
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002626
2627 msp->smi_bus->priv = msp;
2628 msp->smi_bus->name = "mv643xx_eth smi";
2629 msp->smi_bus->read = smi_bus_read;
2630 msp->smi_bus->write = smi_bus_write,
2631 snprintf(msp->smi_bus->id, MII_BUS_ID_SIZE, "%d", pdev->id);
2632 msp->smi_bus->parent = &pdev->dev;
2633 msp->smi_bus->phy_mask = 0xffffffff;
2634 if (mdiobus_register(msp->smi_bus) < 0)
2635 goto out_free_mii_bus;
Lennert Buytenheked944932008-08-26 13:34:19 +02002636 msp->smi = msp;
2637 } else {
Lennert Buytenhekfc0eb9f2008-08-26 12:56:56 +02002638 msp->smi = platform_get_drvdata(pd->shared_smi);
Lennert Buytenheked944932008-08-26 13:34:19 +02002639 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002640
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002641 msp->err_interrupt = NO_IRQ;
2642 init_waitqueue_head(&msp->smi_busy_wait);
2643
2644 /*
2645 * Check whether the error interrupt is hooked up.
2646 */
2647 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2648 if (res != NULL) {
2649 int err;
2650
2651 err = request_irq(res->start, mv643xx_eth_err_irq,
2652 IRQF_SHARED, "mv643xx_eth", msp);
2653 if (!err) {
2654 writel(ERR_INT_SMI_DONE, msp->base + ERR_INT_MASK);
2655 msp->err_interrupt = res->start;
2656 }
2657 }
2658
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002659 /*
2660 * (Re-)program MBUS remapping windows if we are asked to.
2661 */
2662 if (pd != NULL && pd->dram != NULL)
2663 mv643xx_eth_conf_mbus_windows(msp, pd->dram);
2664
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002665 /*
2666 * Detect hardware parameters.
2667 */
2668 msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002669 infer_hw_params(msp);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002670
2671 platform_set_drvdata(pdev, msp);
2672
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002673 return 0;
2674
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002675out_free_mii_bus:
2676 mdiobus_free(msp->smi_bus);
Lennert Buytenheked944932008-08-26 13:34:19 +02002677out_unmap:
2678 iounmap(msp->base);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002679out_free:
2680 kfree(msp);
2681out:
2682 return ret;
2683}
2684
2685static int mv643xx_eth_shared_remove(struct platform_device *pdev)
2686{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002687 struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
Lennert Buytenheked944932008-08-26 13:34:19 +02002688 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002689
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002690 if (pd == NULL || pd->shared_smi == NULL) {
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002691 mdiobus_unregister(msp->smi_bus);
Lennert Buytenhekbcb33362008-11-18 04:28:35 +00002692 mdiobus_free(msp->smi_bus);
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002693 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002694 if (msp->err_interrupt != NO_IRQ)
2695 free_irq(msp->err_interrupt, msp);
Lennert Buytenhekcc9754b2008-06-01 02:10:27 +02002696 iounmap(msp->base);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002697 kfree(msp);
2698
2699 return 0;
2700}
2701
2702static struct platform_driver mv643xx_eth_shared_driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002703 .probe = mv643xx_eth_shared_probe,
2704 .remove = mv643xx_eth_shared_remove,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002705 .driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002706 .name = MV643XX_ETH_SHARED_NAME,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002707 .owner = THIS_MODULE,
2708 },
2709};
2710
Lennert Buytenheke5371492008-06-01 02:18:13 +02002711static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002712{
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002713 int addr_shift = 5 * mp->port_num;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002714 u32 data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002715
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002716 data = rdl(mp, PHY_ADDR);
2717 data &= ~(0x1f << addr_shift);
2718 data |= (phy_addr & 0x1f) << addr_shift;
2719 wrl(mp, PHY_ADDR, data);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002720}
2721
Lennert Buytenheke5371492008-06-01 02:18:13 +02002722static int phy_addr_get(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002723{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002724 unsigned int data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002725
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002726 data = rdl(mp, PHY_ADDR);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002727
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002728 return (data >> (5 * mp->port_num)) & 0x1f;
2729}
2730
2731static void set_params(struct mv643xx_eth_private *mp,
2732 struct mv643xx_eth_platform_data *pd)
2733{
2734 struct net_device *dev = mp->dev;
2735
2736 if (is_valid_ether_addr(pd->mac_addr))
2737 memcpy(dev->dev_addr, pd->mac_addr, 6);
2738 else
2739 uc_addr_get(mp, dev->dev_addr);
2740
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00002741 mp->rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002742 if (pd->rx_queue_size)
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00002743 mp->rx_ring_size = pd->rx_queue_size;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002744 mp->rx_desc_sram_addr = pd->rx_sram_addr;
2745 mp->rx_desc_sram_size = pd->rx_sram_size;
2746
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002747 mp->rxq_count = pd->rx_queue_count ? : 1;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002748
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00002749 mp->tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002750 if (pd->tx_queue_size)
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00002751 mp->tx_ring_size = pd->tx_queue_size;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002752 mp->tx_desc_sram_addr = pd->tx_sram_addr;
2753 mp->tx_desc_sram_size = pd->tx_sram_size;
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002754
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002755 mp->txq_count = pd->tx_queue_count ? : 1;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002756}
2757
Lennert Buytenheked944932008-08-26 13:34:19 +02002758static struct phy_device *phy_scan(struct mv643xx_eth_private *mp,
2759 int phy_addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002760{
Lennert Buytenhek298cf9b2008-10-08 16:29:57 -07002761 struct mii_bus *bus = mp->shared->smi->smi_bus;
Lennert Buytenheked944932008-08-26 13:34:19 +02002762 struct phy_device *phydev;
2763 int start;
2764 int num;
2765 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002766
Lennert Buytenheked944932008-08-26 13:34:19 +02002767 if (phy_addr == MV643XX_ETH_PHY_ADDR_DEFAULT) {
2768 start = phy_addr_get(mp) & 0x1f;
2769 num = 32;
2770 } else {
2771 start = phy_addr & 0x1f;
2772 num = 1;
2773 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002774
Lennert Buytenheked944932008-08-26 13:34:19 +02002775 phydev = NULL;
2776 for (i = 0; i < num; i++) {
2777 int addr = (start + i) & 0x1f;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002778
Lennert Buytenheked944932008-08-26 13:34:19 +02002779 if (bus->phy_map[addr] == NULL)
2780 mdiobus_scan(bus, addr);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002781
Lennert Buytenheked944932008-08-26 13:34:19 +02002782 if (phydev == NULL) {
2783 phydev = bus->phy_map[addr];
2784 if (phydev != NULL)
2785 phy_addr_set(mp, addr);
2786 }
2787 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002788
Lennert Buytenheked944932008-08-26 13:34:19 +02002789 return phydev;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002790}
2791
Lennert Buytenheked944932008-08-26 13:34:19 +02002792static void phy_init(struct mv643xx_eth_private *mp, int speed, int duplex)
James Chapmand0412d92006-01-27 01:15:30 -07002793{
Lennert Buytenheked944932008-08-26 13:34:19 +02002794 struct phy_device *phy = mp->phy;
James Chapmand0412d92006-01-27 01:15:30 -07002795
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002796 phy_reset(mp);
2797
Kay Sieversdb1d7bf2009-01-26 21:12:58 -08002798 phy_attach(mp->dev, dev_name(&phy->dev), 0, PHY_INTERFACE_MODE_GMII);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002799
Lennert Buytenheked944932008-08-26 13:34:19 +02002800 if (speed == 0) {
2801 phy->autoneg = AUTONEG_ENABLE;
2802 phy->speed = 0;
2803 phy->duplex = 0;
2804 phy->advertising = phy->supported | ADVERTISED_Autoneg;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002805 } else {
Lennert Buytenheked944932008-08-26 13:34:19 +02002806 phy->autoneg = AUTONEG_DISABLE;
2807 phy->advertising = 0;
2808 phy->speed = speed;
2809 phy->duplex = duplex;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002810 }
Lennert Buytenheked944932008-08-26 13:34:19 +02002811 phy_start_aneg(phy);
James Chapmand0412d92006-01-27 01:15:30 -07002812}
2813
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002814static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
2815{
2816 u32 pscr;
2817
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002818 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002819 if (pscr & SERIAL_PORT_ENABLE) {
2820 pscr &= ~SERIAL_PORT_ENABLE;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002821 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002822 }
2823
2824 pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED;
Lennert Buytenheked944932008-08-26 13:34:19 +02002825 if (mp->phy == NULL) {
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002826 pscr |= DISABLE_AUTO_NEG_SPEED_GMII;
2827 if (speed == SPEED_1000)
2828 pscr |= SET_GMII_SPEED_TO_1000;
2829 else if (speed == SPEED_100)
2830 pscr |= SET_MII_SPEED_TO_100;
2831
2832 pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL;
2833
2834 pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX;
2835 if (duplex == DUPLEX_FULL)
2836 pscr |= SET_FULL_DUPLEX_MODE;
2837 }
2838
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002839 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002840}
2841
Lennert Buytenhekea8a8642009-02-24 15:41:40 +00002842static const struct net_device_ops mv643xx_eth_netdev_ops = {
2843 .ndo_open = mv643xx_eth_open,
2844 .ndo_stop = mv643xx_eth_stop,
2845 .ndo_start_xmit = mv643xx_eth_xmit,
2846 .ndo_set_rx_mode = mv643xx_eth_set_rx_mode,
2847 .ndo_set_mac_address = mv643xx_eth_set_mac_address,
kirjanov@gmail.com1d4bd942010-02-16 20:40:11 +00002848 .ndo_validate_addr = eth_validate_addr,
Lennert Buytenhekea8a8642009-02-24 15:41:40 +00002849 .ndo_do_ioctl = mv643xx_eth_ioctl,
2850 .ndo_change_mtu = mv643xx_eth_change_mtu,
2851 .ndo_tx_timeout = mv643xx_eth_tx_timeout,
2852 .ndo_get_stats = mv643xx_eth_get_stats,
2853#ifdef CONFIG_NET_POLL_CONTROLLER
2854 .ndo_poll_controller = mv643xx_eth_netpoll,
2855#endif
2856};
2857
Russell King3ae5eae2005-11-09 22:32:44 +00002858static int mv643xx_eth_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002859{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002860 struct mv643xx_eth_platform_data *pd;
Lennert Buytenheke5371492008-06-01 02:18:13 +02002861 struct mv643xx_eth_private *mp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002862 struct net_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002863 struct resource *res;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002864 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002865
Dale Farnsworth84dd6192007-03-03 06:40:28 -07002866 pd = pdev->dev.platform_data;
2867 if (pd == NULL) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002868 dev_printk(KERN_ERR, &pdev->dev,
2869 "no mv643xx_eth_platform_data\n");
Dale Farnsworth84dd6192007-03-03 06:40:28 -07002870 return -ENODEV;
2871 }
2872
Lennert Buytenhekfa3959f2008-04-24 01:27:02 +02002873 if (pd->shared == NULL) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002874 dev_printk(KERN_ERR, &pdev->dev,
2875 "no mv643xx_eth_platform_data->shared\n");
Lennert Buytenhekfa3959f2008-04-24 01:27:02 +02002876 return -ENODEV;
2877 }
2878
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002879 dev = alloc_etherdev_mq(sizeof(struct mv643xx_eth_private), 8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002880 if (!dev)
2881 return -ENOMEM;
2882
Linus Torvalds1da177e2005-04-16 15:20:36 -07002883 mp = netdev_priv(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002884 platform_set_drvdata(pdev, mp);
2885
2886 mp->shared = platform_get_drvdata(pd->shared);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002887 mp->base = mp->shared->base + 0x0400 + (pd->port_number << 10);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002888 mp->port_num = pd->port_number;
2889
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002890 mp->dev = dev;
Lennert Buytenhek78fff832008-08-24 01:03:57 +02002891
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002892 set_params(mp, pd);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002893 dev->real_num_tx_queues = mp->txq_count;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002894
Lennert Buytenheked944932008-08-26 13:34:19 +02002895 if (pd->phy_addr != MV643XX_ETH_PHY_NONE)
2896 mp->phy = phy_scan(mp, pd->phy_addr);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002897
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00002898 if (mp->phy != NULL)
Lennert Buytenheked944932008-08-26 13:34:19 +02002899 phy_init(mp, pd->speed, pd->duplex);
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00002900
2901 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
Lennert Buytenheked944932008-08-26 13:34:19 +02002902
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002903 init_pscr(mp, pd->speed, pd->duplex);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002904
Lennert Buytenhek4ff34952008-09-19 05:04:57 +02002905
2906 mib_counters_clear(mp);
2907
2908 init_timer(&mp->mib_counters_timer);
2909 mp->mib_counters_timer.data = (unsigned long)mp;
2910 mp->mib_counters_timer.function = mib_counters_timer_wrapper;
2911 mp->mib_counters_timer.expires = jiffies + 30 * HZ;
2912 add_timer(&mp->mib_counters_timer);
2913
2914 spin_lock_init(&mp->mib_counters_lock);
2915
2916 INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
2917
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002918 netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 128);
2919
2920 init_timer(&mp->rx_oom);
2921 mp->rx_oom.data = (unsigned long)mp;
2922 mp->rx_oom.function = oom_timer_wrapper;
2923
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002924
Linus Torvalds1da177e2005-04-16 15:20:36 -07002925 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2926 BUG_ON(!res);
2927 dev->irq = res->start;
2928
Lennert Buytenhekea8a8642009-02-24 15:41:40 +00002929 dev->netdev_ops = &mv643xx_eth_netdev_ops;
2930
Linus Torvalds1da177e2005-04-16 15:20:36 -07002931 dev->watchdog_timeo = 2 * HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002932 dev->base_addr = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002933
Wolfram Joost63890572006-01-16 16:57:41 -07002934 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
Lennert Buytenheke32b6612008-07-24 06:22:59 +02002935 dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM;
James Chapmanc28a4f82006-01-27 01:13:15 -07002936
Olaf Heringb0b8dab2006-04-27 18:23:49 -07002937 SET_NETDEV_DEV(dev, &pdev->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002938
2939 if (mp->shared->win_protect)
2940 wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
2941
Lennert Buytenheka5fe3612009-02-24 15:41:47 +00002942 netif_carrier_off(dev);
2943
Lennert Buytenhekb5e86db2009-04-08 15:42:46 -07002944 wrlp(mp, SDMA_CONFIG, PORT_SDMA_CONFIG_DEFAULT_VALUE);
2945
Lennert Buytenhek4fb0a542009-02-24 15:42:05 +00002946 set_rx_coal(mp, 250);
Lennert Buytenheka5fe3612009-02-24 15:41:47 +00002947 set_tx_coal(mp, 0);
2948
Linus Torvalds1da177e2005-04-16 15:20:36 -07002949 err = register_netdev(dev);
2950 if (err)
2951 goto out;
2952
Johannes Berge1749612008-10-27 15:59:26 -07002953 dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %pM\n",
2954 mp->port_num, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002955
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002956 if (mp->tx_desc_sram_size > 0)
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002957 dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");
Nicolas DETb1529872005-10-28 17:46:30 -07002958
Linus Torvalds1da177e2005-04-16 15:20:36 -07002959 return 0;
2960
2961out:
2962 free_netdev(dev);
2963
2964 return err;
2965}
2966
Russell King3ae5eae2005-11-09 22:32:44 +00002967static int mv643xx_eth_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002968{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002969 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002970
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002971 unregister_netdev(mp->dev);
Lennert Buytenheked944932008-08-26 13:34:19 +02002972 if (mp->phy != NULL)
2973 phy_detach(mp->phy);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002974 flush_scheduled_work();
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002975 free_netdev(mp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002976
Russell King3ae5eae2005-11-09 22:32:44 +00002977 platform_set_drvdata(pdev, NULL);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002978
Linus Torvalds1da177e2005-04-16 15:20:36 -07002979 return 0;
2980}
2981
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002982static void mv643xx_eth_shutdown(struct platform_device *pdev)
2983{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002984 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002985
2986 /* Mask all interrupts on ethernet port */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002987 wrlp(mp, INT_MASK, 0);
2988 rdlp(mp, INT_MASK);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002989
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002990 if (netif_running(mp->dev))
2991 port_reset(mp);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002992}
2993
Russell King3ae5eae2005-11-09 22:32:44 +00002994static struct platform_driver mv643xx_eth_driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002995 .probe = mv643xx_eth_probe,
2996 .remove = mv643xx_eth_remove,
2997 .shutdown = mv643xx_eth_shutdown,
Russell King3ae5eae2005-11-09 22:32:44 +00002998 .driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002999 .name = MV643XX_ETH_NAME,
Kay Sievers72abb462008-04-18 13:50:44 -07003000 .owner = THIS_MODULE,
Russell King3ae5eae2005-11-09 22:32:44 +00003001 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07003002};
3003
Lennert Buytenheke5371492008-06-01 02:18:13 +02003004static int __init mv643xx_eth_init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003005{
3006 int rc;
3007
Russell King3ae5eae2005-11-09 22:32:44 +00003008 rc = platform_driver_register(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003009 if (!rc) {
Russell King3ae5eae2005-11-09 22:32:44 +00003010 rc = platform_driver_register(&mv643xx_eth_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003011 if (rc)
Russell King3ae5eae2005-11-09 22:32:44 +00003012 platform_driver_unregister(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003013 }
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02003014
Linus Torvalds1da177e2005-04-16 15:20:36 -07003015 return rc;
3016}
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02003017module_init(mv643xx_eth_init_module);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003018
Lennert Buytenheke5371492008-06-01 02:18:13 +02003019static void __exit mv643xx_eth_cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003020{
Russell King3ae5eae2005-11-09 22:32:44 +00003021 platform_driver_unregister(&mv643xx_eth_driver);
3022 platform_driver_unregister(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003023}
Lennert Buytenheke5371492008-06-01 02:18:13 +02003024module_exit(mv643xx_eth_cleanup_module);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003025
Lennert Buytenhek45675bc2008-06-02 02:02:30 +02003026MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
3027 "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003028MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02003029MODULE_LICENSE("GPL");
Kay Sievers72abb462008-04-18 13:50:44 -07003030MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02003031MODULE_ALIAS("platform:" MV643XX_ETH_NAME);