blob: 34425b94452f33837758c1852fd4c27a3ebddc10 [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 Hering3bb8a18a2006-01-05 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
Joe Perches7542db82011-03-02 17:50:35 +000038#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
39
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#include <linux/init.h>
41#include <linux/dma-mapping.h>
Al Virob6298c22006-01-18 19:35:54 -050042#include <linux/in.h>
Lennert Buytenhekc3efab82008-10-02 00:52:39 +000043#include <linux/ip.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#include <linux/tcp.h>
45#include <linux/udp.h>
46#include <linux/etherdevice.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <linux/delay.h>
48#include <linux/ethtool.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010049#include <linux/platform_device.h>
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020050#include <linux/module.h>
51#include <linux/kernel.h>
52#include <linux/spinlock.h>
53#include <linux/workqueue.h>
Lennert Buytenheked944932008-08-26 13:34:19 +020054#include <linux/phy.h>
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020055#include <linux/mv643xx_eth.h>
Lennert Buytenhek10a99482008-11-20 03:57:16 -080056#include <linux/io.h>
57#include <linux/types.h>
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +000058#include <linux/inet_lro.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090059#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070060#include <asm/system.h>
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020061
Lennert Buytenheke5371492008-06-01 02:18:13 +020062static char mv643xx_eth_driver_name[] = "mv643xx_eth";
Lennert Buytenhek042af532008-08-24 09:01:57 +020063static char mv643xx_eth_driver_version[] = "1.4";
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +020064
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020065
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020066/*
67 * Registers shared between all ports.
68 */
Lennert Buytenhek3cb46672008-06-01 01:03:23 +020069#define PHY_ADDR 0x0000
70#define SMI_REG 0x0004
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +020071#define SMI_BUSY 0x10000000
72#define SMI_READ_VALID 0x08000000
73#define SMI_OPCODE_READ 0x04000000
74#define SMI_OPCODE_WRITE 0x00000000
75#define ERR_INT_CAUSE 0x0080
76#define ERR_INT_SMI_DONE 0x00000010
77#define ERR_INT_MASK 0x0084
Lennert Buytenhek3cb46672008-06-01 01:03:23 +020078#define WINDOW_BASE(w) (0x0200 + ((w) << 3))
79#define WINDOW_SIZE(w) (0x0204 + ((w) << 3))
80#define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2))
81#define WINDOW_BAR_ENABLE 0x0290
82#define WINDOW_PROTECT(w) (0x0294 + ((w) << 4))
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020083
84/*
Lennert Buytenhek37a60842008-11-20 03:57:36 -080085 * Main per-port registers. These live at offset 0x0400 for
86 * port #0, 0x0800 for port #1, and 0x0c00 for port #2.
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +020087 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -080088#define PORT_CONFIG 0x0000
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +020089#define UNICAST_PROMISCUOUS_MODE 0x00000001
Lennert Buytenhek37a60842008-11-20 03:57:36 -080090#define PORT_CONFIG_EXT 0x0004
91#define MAC_ADDR_LOW 0x0014
92#define MAC_ADDR_HIGH 0x0018
93#define SDMA_CONFIG 0x001c
Lennert Buytenhekbecfad92009-05-06 03:01:17 +000094#define TX_BURST_SIZE_16_64BIT 0x01000000
95#define TX_BURST_SIZE_4_64BIT 0x00800000
96#define BLM_TX_NO_SWAP 0x00000020
97#define BLM_RX_NO_SWAP 0x00000010
98#define RX_BURST_SIZE_16_64BIT 0x00000008
99#define RX_BURST_SIZE_4_64BIT 0x00000004
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800100#define PORT_SERIAL_CONTROL 0x003c
Lennert Buytenhekbecfad92009-05-06 03:01:17 +0000101#define SET_MII_SPEED_TO_100 0x01000000
102#define SET_GMII_SPEED_TO_1000 0x00800000
103#define SET_FULL_DUPLEX_MODE 0x00200000
104#define MAX_RX_PACKET_9700BYTE 0x000a0000
105#define DISABLE_AUTO_NEG_SPEED_GMII 0x00002000
106#define DO_NOT_FORCE_LINK_FAIL 0x00000400
107#define SERIAL_PORT_CONTROL_RESERVED 0x00000200
108#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL 0x00000008
109#define DISABLE_AUTO_NEG_FOR_DUPLEX 0x00000004
110#define FORCE_LINK_PASS 0x00000002
111#define SERIAL_PORT_ENABLE 0x00000001
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800112#define PORT_STATUS 0x0044
Lennert Buytenheka2a41682008-06-01 01:30:42 +0200113#define TX_FIFO_EMPTY 0x00000400
Lennert Buytenhekae9ae062008-07-15 02:15:24 +0200114#define TX_IN_PROGRESS 0x00000080
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +0200115#define PORT_SPEED_MASK 0x00000030
116#define PORT_SPEED_1000 0x00000010
117#define PORT_SPEED_100 0x00000020
118#define PORT_SPEED_10 0x00000000
119#define FLOW_CONTROL_ENABLED 0x00000008
120#define FULL_DUPLEX 0x00000004
Lennert Buytenhek81600eea92008-07-14 14:29:40 +0200121#define LINK_UP 0x00000002
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800122#define TXQ_COMMAND 0x0048
123#define TXQ_FIX_PRIO_CONF 0x004c
124#define TX_BW_RATE 0x0050
125#define TX_BW_MTU 0x0058
126#define TX_BW_BURST 0x005c
127#define INT_CAUSE 0x0060
Lennert Buytenhek226bb6b2008-06-02 01:47:21 +0200128#define INT_TX_END 0x07f80000
Saeed Bisharae0ca8412009-05-06 03:02:01 +0000129#define INT_TX_END_0 0x00080000
Lennert Buytenhekbefefe22008-08-28 06:10:04 +0200130#define INT_RX 0x000003fc
Saeed Bisharae0ca8412009-05-06 03:02:01 +0000131#define INT_RX_0 0x00000004
Lennert Buytenhek073a3452008-06-01 02:00:31 +0200132#define INT_EXT 0x00000002
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800133#define INT_CAUSE_EXT 0x0064
Lennert Buytenhekbefefe22008-08-28 06:10:04 +0200134#define INT_EXT_LINK_PHY 0x00110000
135#define INT_EXT_TX 0x000000ff
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800136#define INT_MASK 0x0068
137#define INT_MASK_EXT 0x006c
138#define TX_FIFO_URGENT_THRESHOLD 0x0074
139#define TXQ_FIX_PRIO_CONF_MOVED 0x00dc
140#define TX_BW_RATE_MOVED 0x00e0
141#define TX_BW_MTU_MOVED 0x00e8
142#define TX_BW_BURST_MOVED 0x00ec
143#define RXQ_CURRENT_DESC_PTR(q) (0x020c + ((q) << 4))
144#define RXQ_COMMAND 0x0280
145#define TXQ_CURRENT_DESC_PTR(q) (0x02c0 + ((q) << 2))
146#define TXQ_BW_TOKENS(q) (0x0300 + ((q) << 4))
147#define TXQ_BW_CONF(q) (0x0304 + ((q) << 4))
148#define TXQ_BW_WRR_CONF(q) (0x0308 + ((q) << 4))
149
150/*
151 * Misc per-port registers.
152 */
Lennert Buytenhek3cb46672008-06-01 01:03:23 +0200153#define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
154#define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
155#define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
156#define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200157
Lennert Buytenhek2679a552008-06-01 01:18:58 +0200158
159/*
Lennert Buytenhekbecfad92009-05-06 03:01:17 +0000160 * SDMA configuration register default value.
Lennert Buytenhek2679a552008-06-01 01:18:58 +0200161 */
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200162#if defined(__BIG_ENDIAN)
163#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
Lennert Buytenheke0c6ef92009-01-19 17:16:00 -0800164 (RX_BURST_SIZE_4_64BIT | \
165 TX_BURST_SIZE_4_64BIT)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200166#elif defined(__LITTLE_ENDIAN)
167#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
Lennert Buytenheke0c6ef92009-01-19 17:16:00 -0800168 (RX_BURST_SIZE_4_64BIT | \
169 BLM_RX_NO_SWAP | \
170 BLM_TX_NO_SWAP | \
171 TX_BURST_SIZE_4_64BIT)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200172#else
173#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
174#endif
175
Lennert Buytenhek2beff772008-06-01 01:22:37 +0200176
177/*
Lennert Buytenhekbecfad92009-05-06 03:01:17 +0000178 * Misc definitions.
Lennert Buytenhek2beff772008-06-01 01:22:37 +0200179 */
Lennert Buytenhekbecfad92009-05-06 03:01:17 +0000180#define DEFAULT_RX_QUEUE_SIZE 128
181#define DEFAULT_TX_QUEUE_SIZE 256
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +0000182#define SKB_DMA_REALIGN ((PAGE_SIZE - NET_SKB_PAD) % SMP_CACHE_BYTES)
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200183
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200184
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200185/*
186 * RX/TX descriptors.
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200187 */
188#if defined(__BIG_ENDIAN)
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200189struct rx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200190 u16 byte_cnt; /* Descriptor buffer byte count */
191 u16 buf_size; /* Buffer size */
192 u32 cmd_sts; /* Descriptor command status */
193 u32 next_desc_ptr; /* Next descriptor pointer */
194 u32 buf_ptr; /* Descriptor buffer pointer */
195};
196
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200197struct tx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200198 u16 byte_cnt; /* buffer byte count */
199 u16 l4i_chk; /* CPU provided TCP checksum */
200 u32 cmd_sts; /* Command/status field */
201 u32 next_desc_ptr; /* Pointer to next descriptor */
202 u32 buf_ptr; /* pointer to buffer for this descriptor*/
203};
204#elif defined(__LITTLE_ENDIAN)
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200205struct rx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200206 u32 cmd_sts; /* Descriptor command status */
207 u16 buf_size; /* Buffer size */
208 u16 byte_cnt; /* Descriptor buffer byte count */
209 u32 buf_ptr; /* Descriptor buffer pointer */
210 u32 next_desc_ptr; /* Next descriptor pointer */
211};
212
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200213struct tx_desc {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200214 u32 cmd_sts; /* Command/status field */
215 u16 l4i_chk; /* CPU provided TCP checksum */
216 u16 byte_cnt; /* buffer byte count */
217 u32 buf_ptr; /* pointer to buffer for this descriptor*/
218 u32 next_desc_ptr; /* Pointer to next descriptor */
219};
220#else
221#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
222#endif
223
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200224/* RX & TX descriptor command */
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200225#define BUFFER_OWNED_BY_DMA 0x80000000
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200226
227/* RX & TX descriptor status */
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200228#define ERROR_SUMMARY 0x00000001
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200229
230/* RX descriptor status */
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200231#define LAYER_4_CHECKSUM_OK 0x40000000
232#define RX_ENABLE_INTERRUPT 0x20000000
233#define RX_FIRST_DESC 0x08000000
234#define RX_LAST_DESC 0x04000000
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000235#define RX_IP_HDR_OK 0x02000000
236#define RX_PKT_IS_IPV4 0x01000000
237#define RX_PKT_IS_ETHERNETV2 0x00800000
238#define RX_PKT_LAYER4_TYPE_MASK 0x00600000
239#define RX_PKT_LAYER4_TYPE_TCP_IPV4 0x00000000
240#define RX_PKT_IS_VLAN_TAGGED 0x00080000
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200241
242/* TX descriptor command */
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200243#define TX_ENABLE_INTERRUPT 0x00800000
244#define GEN_CRC 0x00400000
245#define TX_FIRST_DESC 0x00200000
246#define TX_LAST_DESC 0x00100000
247#define ZERO_PADDING 0x00080000
248#define GEN_IP_V4_CHECKSUM 0x00040000
249#define GEN_TCP_UDP_CHECKSUM 0x00020000
250#define UDP_FRAME 0x00010000
Lennert Buytenheke32b6612008-07-24 06:22:59 +0200251#define MAC_HDR_EXTRA_4_BYTES 0x00008000
252#define MAC_HDR_EXTRA_8_BYTES 0x00000200
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200253
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200254#define TX_IHL_SHIFT 11
Lennert Buytenhek7ca72a32008-06-01 01:41:29 +0200255
256
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200257/* global *******************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200258struct mv643xx_eth_shared_private {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200259 /*
260 * Ethernet controller base address.
261 */
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200262 void __iomem *base;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200263
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200264 /*
Lennert Buytenhekfc0eb9f2008-08-26 12:56:56 +0200265 * Points at the right SMI instance to use.
266 */
267 struct mv643xx_eth_shared_private *smi;
268
269 /*
Lennert Buytenheked944932008-08-26 13:34:19 +0200270 * Provides access to local SMI interface.
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200271 */
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -0700272 struct mii_bus *smi_bus;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200273
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200274 /*
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +0200275 * If we have access to the error interrupt pin (which is
276 * somewhat misnamed as it not only reflects internal errors
277 * but also reflects SMI completion), use that to wait for
278 * SMI access completion instead of polling the SMI busy bit.
279 */
280 int err_interrupt;
281 wait_queue_head_t smi_busy_wait;
282
283 /*
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200284 * Per-port MBUS window access register value.
285 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200286 u32 win_protect;
287
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200288 /*
289 * Hardware-specific parameters.
290 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200291 unsigned int t_clk;
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +0200292 int extended_rx_coal_limit;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200293 int tx_bw_control;
Saeed Bishara9b2c2ff2010-06-27 00:26:43 +0000294 int tx_csum_limit;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200295};
296
Lennert Buytenhek457b1d52008-09-04 12:22:34 +0200297#define TX_BW_CONTROL_ABSENT 0
298#define TX_BW_CONTROL_OLD_LAYOUT 1
299#define TX_BW_CONTROL_NEW_LAYOUT 2
300
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +0000301static int mv643xx_eth_open(struct net_device *dev);
302static int mv643xx_eth_stop(struct net_device *dev);
303
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200304
305/* per-port *****************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200306struct mib_counters {
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200307 u64 good_octets_received;
308 u32 bad_octets_received;
309 u32 internal_mac_transmit_err;
310 u32 good_frames_received;
311 u32 bad_frames_received;
312 u32 broadcast_frames_received;
313 u32 multicast_frames_received;
314 u32 frames_64_octets;
315 u32 frames_65_to_127_octets;
316 u32 frames_128_to_255_octets;
317 u32 frames_256_to_511_octets;
318 u32 frames_512_to_1023_octets;
319 u32 frames_1024_to_max_octets;
320 u64 good_octets_sent;
321 u32 good_frames_sent;
322 u32 excessive_collision;
323 u32 multicast_frames_sent;
324 u32 broadcast_frames_sent;
325 u32 unrec_mac_control_received;
326 u32 fc_sent;
327 u32 good_fc_received;
328 u32 bad_fc_received;
329 u32 undersize_received;
330 u32 fragments_received;
331 u32 oversize_received;
332 u32 jabber_received;
333 u32 mac_receive_error;
334 u32 bad_crc_event;
335 u32 collision;
336 u32 late_collision;
337};
338
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000339struct lro_counters {
340 u32 lro_aggregated;
341 u32 lro_flushed;
342 u32 lro_no_desc;
343};
344
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200345struct rx_queue {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200346 int index;
347
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200348 int rx_ring_size;
349
350 int rx_desc_count;
351 int rx_curr_desc;
352 int rx_used_desc;
353
354 struct rx_desc *rx_desc_area;
355 dma_addr_t rx_desc_dma;
356 int rx_desc_area_size;
357 struct sk_buff **rx_skb;
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000358
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000359 struct net_lro_mgr lro_mgr;
360 struct net_lro_desc lro_arr[8];
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200361};
362
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200363struct tx_queue {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200364 int index;
365
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200366 int tx_ring_size;
367
368 int tx_desc_count;
369 int tx_curr_desc;
370 int tx_used_desc;
371
372 struct tx_desc *tx_desc_area;
373 dma_addr_t tx_desc_dma;
374 int tx_desc_area_size;
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200375
376 struct sk_buff_head tx_skb;
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200377
378 unsigned long tx_packets;
379 unsigned long tx_bytes;
380 unsigned long tx_dropped;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200381};
382
Lennert Buytenheke5371492008-06-01 02:18:13 +0200383struct mv643xx_eth_private {
384 struct mv643xx_eth_shared_private *shared;
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800385 void __iomem *base;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200386 int port_num;
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200387
388 struct net_device *dev;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200389
Lennert Buytenheked944932008-08-26 13:34:19 +0200390 struct phy_device *phy;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200391
Lennert Buytenhek4ff34952008-09-19 05:04:57 +0200392 struct timer_list mib_counters_timer;
393 spinlock_t mib_counters_lock;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200394 struct mib_counters mib_counters;
Lennert Buytenhek4ff34952008-09-19 05:04:57 +0200395
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000396 struct lro_counters lro_counters;
397
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200398 struct work_struct tx_timeout_task;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200399
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200400 struct napi_struct napi;
Saeed Bisharae0ca8412009-05-06 03:02:01 +0000401 u32 int_mask;
Lennert Buytenhek1319eba2009-04-29 11:57:34 +0000402 u8 oom;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200403 u8 work_link;
404 u8 work_tx;
405 u8 work_tx_end;
406 u8 work_rx;
407 u8 work_rx_refill;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200408
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700409 int skb_size;
410 struct sk_buff_head rx_recycle;
411
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200412 /*
413 * RX state.
414 */
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +0000415 int rx_ring_size;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200416 unsigned long rx_desc_sram_addr;
417 int rx_desc_sram_size;
Lennert Buytenhekf7981c12008-08-26 10:23:22 +0200418 int rxq_count;
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200419 struct timer_list rx_oom;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200420 struct rx_queue rxq[8];
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200421
422 /*
423 * TX state.
424 */
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +0000425 int tx_ring_size;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200426 unsigned long tx_desc_sram_addr;
427 int tx_desc_sram_size;
Lennert Buytenhekf7981c12008-08-26 10:23:22 +0200428 int txq_count;
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200429 struct tx_queue txq[8];
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200430};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431
Lennert Buytenhekfbd6a752007-10-19 16:03:46 +0200432
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200433/* port register accessors **************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +0200434static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435{
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200436 return readl(mp->shared->base + offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437}
438
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800439static inline u32 rdlp(struct mv643xx_eth_private *mp, int offset)
440{
441 return readl(mp->base + offset);
442}
443
Lennert Buytenheke5371492008-06-01 02:18:13 +0200444static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445{
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200446 writel(data, mp->shared->base + offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447}
448
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800449static inline void wrlp(struct mv643xx_eth_private *mp, int offset, u32 data)
450{
451 writel(data, mp->base + offset);
452}
453
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200454
455/* rxq/txq helper functions *************************************************/
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200456static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457{
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200458 return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200459}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200461static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
462{
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200463 return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200464}
465
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200466static void rxq_enable(struct rx_queue *rxq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200467{
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200468 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800469 wrlp(mp, RXQ_COMMAND, 1 << rxq->index);
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200470}
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700471
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200472static void rxq_disable(struct rx_queue *rxq)
473{
474 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +0200475 u8 mask = 1 << rxq->index;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200476
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800477 wrlp(mp, RXQ_COMMAND, mask << 8);
478 while (rdlp(mp, RXQ_COMMAND) & mask)
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200479 udelay(10);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200480}
481
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200482static void txq_reset_hw_ptr(struct tx_queue *txq)
483{
484 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200485 u32 addr;
486
487 addr = (u32)txq->tx_desc_dma;
488 addr += txq->tx_curr_desc * sizeof(struct tx_desc);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800489 wrlp(mp, TXQ_CURRENT_DESC_PTR(txq->index), addr);
Lennert Buytenhek6b368f62008-07-11 19:38:34 +0200490}
491
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200492static void txq_enable(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200493{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200494 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800495 wrlp(mp, TXQ_COMMAND, 1 << txq->index);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200496}
497
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200498static void txq_disable(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200499{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200500 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200501 u8 mask = 1 << txq->index;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200502
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800503 wrlp(mp, TXQ_COMMAND, mask << 8);
504 while (rdlp(mp, TXQ_COMMAND) & mask)
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200505 udelay(10);
506}
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200507
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200508static void txq_maybe_wake(struct tx_queue *txq)
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200509{
510 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200511 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200512
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200513 if (netif_tx_queue_stopped(nq)) {
514 __netif_tx_lock(nq, smp_processor_id());
515 if (txq->tx_ring_size - txq->tx_desc_count >= MAX_SKB_FRAGS + 1)
516 netif_tx_wake_queue(nq);
517 __netif_tx_unlock(nq);
518 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200519}
520
521
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200522/* rx napi ******************************************************************/
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000523static int
524mv643xx_get_skb_header(struct sk_buff *skb, void **iphdr, void **tcph,
525 u64 *hdr_flags, void *priv)
526{
527 unsigned long cmd_sts = (unsigned long)priv;
528
529 /*
530 * Make sure that this packet is Ethernet II, is not VLAN
531 * tagged, is IPv4, has a valid IP header, and is TCP.
532 */
533 if ((cmd_sts & (RX_IP_HDR_OK | RX_PKT_IS_IPV4 |
534 RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_MASK |
535 RX_PKT_IS_VLAN_TAGGED)) !=
536 (RX_IP_HDR_OK | RX_PKT_IS_IPV4 |
537 RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_TCP_IPV4))
538 return -1;
539
540 skb_reset_network_header(skb);
541 skb_set_transport_header(skb, ip_hdrlen(skb));
542 *iphdr = ip_hdr(skb);
543 *tcph = tcp_hdr(skb);
544 *hdr_flags = LRO_IPV4 | LRO_TCP;
545
546 return 0;
547}
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000548
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200549static int rxq_process(struct rx_queue *rxq, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550{
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200551 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
552 struct net_device_stats *stats = &mp->dev->stats;
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000553 int lro_flush_needed;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200554 int rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000556 lro_flush_needed = 0;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200557 rx = 0;
Lennert Buytenhek9e1f3772008-08-24 02:33:47 +0200558 while (rx < budget && rxq->rx_desc_count) {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200559 struct rx_desc *rx_desc;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200560 unsigned int cmd_sts;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200561 struct sk_buff *skb;
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200562 u16 byte_cnt;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200563
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200564 rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
Lennert Buytenhek96587662008-06-01 10:31:56 +0200565
566 cmd_sts = rx_desc->cmd_sts;
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200567 if (cmd_sts & BUFFER_OWNED_BY_DMA)
Lennert Buytenhek96587662008-06-01 10:31:56 +0200568 break;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200569 rmb();
570
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200571 skb = rxq->rx_skb[rxq->rx_curr_desc];
572 rxq->rx_skb[rxq->rx_curr_desc] = NULL;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200573
Lennert Buytenhek9da78742008-08-23 23:45:28 +0200574 rxq->rx_curr_desc++;
575 if (rxq->rx_curr_desc == rxq->rx_ring_size)
576 rxq->rx_curr_desc = 0;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200577
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700578 dma_unmap_single(mp->dev->dev.parent, rx_desc->buf_ptr,
Lennert Buytenhekabe78712008-08-24 03:00:20 +0200579 rx_desc->buf_size, DMA_FROM_DEVICE);
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200580 rxq->rx_desc_count--;
581 rx++;
Dale Farnsworthb1dd9ca2005-09-01 09:59:23 -0700582
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200583 mp->work_rx_refill |= 1 << rxq->index;
584
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200585 byte_cnt = rx_desc->byte_cnt;
586
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700587 /*
588 * Update statistics.
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200589 *
590 * Note that the descriptor byte count includes 2 dummy
591 * bytes automatically inserted by the hardware at the
592 * start of the packet (which we don't count), and a 4
593 * byte CRC at the end of the packet (which we do count).
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700594 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 stats->rx_packets++;
Lennert Buytenhek6b8f90c2008-09-14 15:50:32 +0200596 stats->rx_bytes += byte_cnt - 2;
Lennert Buytenhek96587662008-06-01 10:31:56 +0200597
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 /*
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200599 * In case we received a packet without first / last bits
600 * on, or the error summary bit is set, the packet needs
601 * to be dropped.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 */
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800603 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC | ERROR_SUMMARY))
604 != (RX_FIRST_DESC | RX_LAST_DESC))
605 goto err;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200606
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800607 /*
608 * The -4 is for the CRC in the trailer of the
609 * received packet
610 */
611 skb_put(skb, byte_cnt - 2 - 4);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200612
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800613 if (cmd_sts & LAYER_4_CHECKSUM_OK)
614 skb->ip_summed = CHECKSUM_UNNECESSARY;
615 skb->protocol = eth_type_trans(skb, mp->dev);
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000616
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000617 if (skb->dev->features & NETIF_F_LRO &&
618 skb->ip_summed == CHECKSUM_UNNECESSARY) {
619 lro_receive_skb(&rxq->lro_mgr, skb, (void *)cmd_sts);
620 lro_flush_needed = 1;
621 } else
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000622 netif_receive_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800624 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800626err:
627 stats->rx_dropped++;
628
629 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
630 (RX_FIRST_DESC | RX_LAST_DESC)) {
631 if (net_ratelimit())
Joe Perches7542db82011-03-02 17:50:35 +0000632 netdev_err(mp->dev,
633 "received packet spanning multiple descriptors\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 }
Lennert Buytenhekf61e5542008-11-20 03:58:46 -0800635
636 if (cmd_sts & ERROR_SUMMARY)
637 stats->rx_errors++;
638
639 dev_kfree_skb(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 }
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +0200641
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000642 if (lro_flush_needed)
643 lro_flush_all(&rxq->lro_mgr);
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +0000644
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200645 if (rx < budget)
646 mp->work_rx &= ~(1 << rxq->index);
647
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200648 return rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649}
650
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200651static int rxq_refill(struct rx_queue *rxq, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652{
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200653 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200654 int refilled;
Lennert Buytenhek8a578112008-06-01 18:09:35 +0200655
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200656 refilled = 0;
657 while (refilled < budget && rxq->rx_desc_count < rxq->rx_ring_size) {
658 struct sk_buff *skb;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200659 int rx;
Lennert Buytenhek53771522008-11-20 03:59:04 -0800660 struct rx_desc *rx_desc;
Saeed Bishara530e5572010-01-05 09:15:32 +0000661 int size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700663 skb = __skb_dequeue(&mp->rx_recycle);
664 if (skb == NULL)
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +0000665 skb = dev_alloc_skb(mp->skb_size);
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700666
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200667 if (skb == NULL) {
Lennert Buytenhek1319eba2009-04-29 11:57:34 +0000668 mp->oom = 1;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200669 goto oom;
670 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +0000672 if (SKB_DMA_REALIGN)
673 skb_reserve(skb, SKB_DMA_REALIGN);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200674
675 refilled++;
676 rxq->rx_desc_count++;
677
678 rx = rxq->rx_used_desc++;
679 if (rxq->rx_used_desc == rxq->rx_ring_size)
680 rxq->rx_used_desc = 0;
681
Lennert Buytenhek53771522008-11-20 03:59:04 -0800682 rx_desc = rxq->rx_desc_area + rx;
683
Saeed Bishara530e5572010-01-05 09:15:32 +0000684 size = skb->end - skb->data;
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700685 rx_desc->buf_ptr = dma_map_single(mp->dev->dev.parent,
Saeed Bishara530e5572010-01-05 09:15:32 +0000686 skb->data, size,
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700687 DMA_FROM_DEVICE);
Saeed Bishara530e5572010-01-05 09:15:32 +0000688 rx_desc->buf_size = size;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200689 rxq->rx_skb[rx] = skb;
690 wmb();
Lennert Buytenhek53771522008-11-20 03:59:04 -0800691 rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200692 wmb();
693
694 /*
695 * The hardware automatically prepends 2 bytes of
696 * dummy data to each received packet, so that the
697 * IP header ends up 16-byte aligned.
698 */
699 skb_reserve(skb, 2);
Lennert Buytenhek2257e052008-08-24 04:33:36 +0200700 }
701
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200702 if (refilled < budget)
703 mp->work_rx_refill &= ~(1 << rxq->index);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200705oom:
706 return refilled;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200709
710/* tx ***********************************************************************/
Paul Janzenf7ea3332006-01-16 16:52:13 -0700711static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
712{
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200713 int frag;
Paul Janzenf7ea3332006-01-16 16:52:13 -0700714
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700715 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200716 skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
717 if (fragp->size <= 8 && fragp->page_offset & 7)
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700718 return 1;
719 }
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200720
Dale Farnsworthb4de9052006-01-27 01:04:43 -0700721 return 0;
Paul Janzenf7ea3332006-01-16 16:52:13 -0700722}
723
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200724static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700725{
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700726 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200727 int nr_frags = skb_shinfo(skb)->nr_frags;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700728 int frag;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700729
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200730 for (frag = 0; frag < nr_frags; frag++) {
731 skb_frag_t *this_frag;
732 int tx_index;
733 struct tx_desc *desc;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700734
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200735 this_frag = &skb_shinfo(skb)->frags[frag];
Lennert Buytenhek66823b92008-11-20 03:58:09 -0800736 tx_index = txq->tx_curr_desc++;
737 if (txq->tx_curr_desc == txq->tx_ring_size)
738 txq->tx_curr_desc = 0;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200739 desc = &txq->tx_desc_area[tx_index];
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700740
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200741 /*
742 * The last fragment will generate an interrupt
743 * which will free the skb on TX completion.
744 */
745 if (frag == nr_frags - 1) {
746 desc->cmd_sts = BUFFER_OWNED_BY_DMA |
747 ZERO_PADDING | TX_LAST_DESC |
748 TX_ENABLE_INTERRUPT;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200749 } else {
750 desc->cmd_sts = BUFFER_OWNED_BY_DMA;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200751 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700752
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700753 desc->l4i_chk = 0;
754 desc->byte_cnt = this_frag->size;
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700755 desc->buf_ptr = dma_map_page(mp->dev->dev.parent,
756 this_frag->page,
757 this_frag->page_offset,
758 this_frag->size, DMA_TO_DEVICE);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700759 }
760}
761
Byron Bradley324ff2c2008-02-04 23:47:15 -0800762static inline __be16 sum16_as_be(__sum16 sum)
763{
764 return (__force __be16)sum;
765}
766
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200767static int txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700768{
Lennert Buytenhek8fa89bf2008-07-14 22:56:55 +0200769 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200770 int nr_frags = skb_shinfo(skb)->nr_frags;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700771 int tx_index;
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200772 struct tx_desc *desc;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700773 u32 cmd_sts;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200774 u16 l4i_chk;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700775 int length;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700776
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200777 cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200778 l4i_chk = 0;
779
780 if (skb->ip_summed == CHECKSUM_PARTIAL) {
Saeed Bishara9b2c2ff2010-06-27 00:26:43 +0000781 int hdr_len;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200782 int tag_bytes;
783
784 BUG_ON(skb->protocol != htons(ETH_P_IP) &&
785 skb->protocol != htons(ETH_P_8021Q));
786
Saeed Bishara9b2c2ff2010-06-27 00:26:43 +0000787 hdr_len = (void *)ip_hdr(skb) - (void *)skb->data;
788 tag_bytes = hdr_len - ETH_HLEN;
789 if (skb->len - hdr_len > mp->shared->tx_csum_limit ||
790 unlikely(tag_bytes & ~12)) {
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200791 if (skb_checksum_help(skb) == 0)
792 goto no_csum;
793 kfree_skb(skb);
794 return 1;
795 }
796
797 if (tag_bytes & 4)
798 cmd_sts |= MAC_HDR_EXTRA_4_BYTES;
799 if (tag_bytes & 8)
800 cmd_sts |= MAC_HDR_EXTRA_8_BYTES;
801
802 cmd_sts |= GEN_TCP_UDP_CHECKSUM |
803 GEN_IP_V4_CHECKSUM |
804 ip_hdr(skb)->ihl << TX_IHL_SHIFT;
805
806 switch (ip_hdr(skb)->protocol) {
807 case IPPROTO_UDP:
808 cmd_sts |= UDP_FRAME;
809 l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
810 break;
811 case IPPROTO_TCP:
812 l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
813 break;
814 default:
815 BUG();
816 }
817 } else {
818no_csum:
819 /* Errata BTS #50, IHL must be 5 if no HW checksum */
820 cmd_sts |= 5 << TX_IHL_SHIFT;
821 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700822
Lennert Buytenhek66823b92008-11-20 03:58:09 -0800823 tx_index = txq->tx_curr_desc++;
824 if (txq->tx_curr_desc == txq->tx_ring_size)
825 txq->tx_curr_desc = 0;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200826 desc = &txq->tx_desc_area[tx_index];
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700827
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700828 if (nr_frags) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200829 txq_submit_frag_skb(txq, skb);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700830 length = skb_headlen(skb);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700831 } else {
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +0200832 cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700833 length = skb->len;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700834 }
835
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200836 desc->l4i_chk = l4i_chk;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700837 desc->byte_cnt = length;
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700838 desc->buf_ptr = dma_map_single(mp->dev->dev.parent, skb->data,
839 length, DMA_TO_DEVICE);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700840
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200841 __skb_queue_tail(&txq->tx_skb, skb);
842
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700843 /* ensure all other descriptors are written before first cmd_sts */
844 wmb();
845 desc->cmd_sts = cmd_sts;
846
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200847 /* clear TX_END status */
848 mp->work_tx_end &= ~(1 << txq->index);
Lennert Buytenhek8fa89bf2008-07-14 22:56:55 +0200849
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700850 /* ensure all descriptors are written before poking hardware */
851 wmb();
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200852 txq_enable(txq);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700853
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200854 txq->tx_desc_count += nr_frags + 1;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200855
856 return 0;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700857}
858
Denis Kirjanov0ccfe642009-11-29 17:04:31 -0800859static netdev_tx_t mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860{
Lennert Buytenheke5371492008-06-01 02:18:13 +0200861 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200862 int queue;
Lennert Buytenhek13d64282008-06-01 20:51:22 +0200863 struct tx_queue *txq;
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200864 struct netdev_queue *nq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200866 queue = skb_get_queue_mapping(skb);
867 txq = mp->txq + queue;
868 nq = netdev_get_tx_queue(dev, queue);
869
Lennert Buytenhek4d64e712008-03-18 11:32:41 -0700870 if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200871 txq->tx_dropped++;
Joe Perches7542db82011-03-02 17:50:35 +0000872 netdev_printk(KERN_DEBUG, dev,
873 "failed to linearize skb with tiny unaligned fragment\n");
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700874 return NETDEV_TX_BUSY;
Dale Farnsworth94843562006-04-11 18:24:26 -0700875 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876
Lennert Buytenhek17cd0a52008-08-24 05:33:55 +0200877 if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) {
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +0200878 if (net_ratelimit())
Joe Perches7542db82011-03-02 17:50:35 +0000879 netdev_err(dev, "tx queue full?!\n");
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +0200880 kfree_skb(skb);
881 return NETDEV_TX_OK;
Lennert Buytenhek4d64e712008-03-18 11:32:41 -0700882 }
883
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200884 if (!txq_submit_skb(txq, skb)) {
885 int entries_left;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200887 txq->tx_bytes += skb->len;
888 txq->tx_packets++;
Lennert Buytenhek4df89bd2008-09-19 04:05:00 +0200889
890 entries_left = txq->tx_ring_size - txq->tx_desc_count;
891 if (entries_left < MAX_SKB_FRAGS + 1)
892 netif_tx_stop_queue(nq);
893 }
Dale Farnsworthc8aaea22006-03-03 10:02:05 -0700894
Lennert Buytenhekc0d0f2c2008-03-18 11:34:34 -0700895 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896}
897
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +0200898
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200899/* tx napi ******************************************************************/
900static void txq_kick(struct tx_queue *txq)
901{
902 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200903 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200904 u32 hw_desc_ptr;
905 u32 expected_ptr;
906
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200907 __netif_tx_lock(nq, smp_processor_id());
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200908
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800909 if (rdlp(mp, TXQ_COMMAND) & (1 << txq->index))
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200910 goto out;
911
Lennert Buytenhek37a60842008-11-20 03:57:36 -0800912 hw_desc_ptr = rdlp(mp, TXQ_CURRENT_DESC_PTR(txq->index));
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200913 expected_ptr = (u32)txq->tx_desc_dma +
914 txq->tx_curr_desc * sizeof(struct tx_desc);
915
916 if (hw_desc_ptr != expected_ptr)
917 txq_enable(txq);
918
919out:
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200920 __netif_tx_unlock(nq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200921
922 mp->work_tx_end &= ~(1 << txq->index);
923}
924
925static int txq_reclaim(struct tx_queue *txq, int budget, int force)
926{
927 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200928 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200929 int reclaimed;
930
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200931 __netif_tx_lock(nq, smp_processor_id());
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200932
933 reclaimed = 0;
934 while (reclaimed < budget && txq->tx_desc_count > 0) {
935 int tx_index;
936 struct tx_desc *desc;
937 u32 cmd_sts;
938 struct sk_buff *skb;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200939
940 tx_index = txq->tx_used_desc;
941 desc = &txq->tx_desc_area[tx_index];
942 cmd_sts = desc->cmd_sts;
943
944 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
945 if (!force)
946 break;
947 desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA;
948 }
949
950 txq->tx_used_desc = tx_index + 1;
951 if (txq->tx_used_desc == txq->tx_ring_size)
952 txq->tx_used_desc = 0;
953
954 reclaimed++;
955 txq->tx_desc_count--;
956
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +0200957 skb = NULL;
958 if (cmd_sts & TX_LAST_DESC)
959 skb = __skb_dequeue(&txq->tx_skb);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200960
961 if (cmd_sts & ERROR_SUMMARY) {
Joe Perches7542db82011-03-02 17:50:35 +0000962 netdev_info(mp->dev, "tx error\n");
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200963 mp->dev->stats.tx_errors++;
964 }
965
Lennert Buytenheka4189502008-09-13 04:16:15 +0200966 if (cmd_sts & TX_FIRST_DESC) {
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700967 dma_unmap_single(mp->dev->dev.parent, desc->buf_ptr,
Lennert Buytenheka4189502008-09-13 04:16:15 +0200968 desc->byte_cnt, DMA_TO_DEVICE);
969 } else {
Gabriel Pauberteb0519b2009-05-17 21:16:47 -0700970 dma_unmap_page(mp->dev->dev.parent, desc->buf_ptr,
Lennert Buytenheka4189502008-09-13 04:16:15 +0200971 desc->byte_cnt, DMA_TO_DEVICE);
972 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200973
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700974 if (skb != NULL) {
975 if (skb_queue_len(&mp->rx_recycle) <
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +0000976 mp->rx_ring_size &&
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +0000977 skb_recycle_check(skb, mp->skb_size))
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -0700978 __skb_queue_head(&mp->rx_recycle, skb);
979 else
980 dev_kfree_skb(skb);
981 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200982 }
983
Lennert Buytenhek8fd89212008-08-28 08:26:28 +0200984 __netif_tx_unlock(nq);
985
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200986 if (reclaimed < budget)
987 mp->work_tx &= ~(1 << txq->index);
988
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +0200989 return reclaimed;
990}
991
992
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +0200993/* tx rate control **********************************************************/
994/*
995 * Set total maximum TX rate (shared by all TX queues for this port)
996 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
997 */
998static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
999{
1000 int token_rate;
1001 int mtu;
1002 int bucket_size;
1003
1004 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
1005 if (token_rate > 1023)
1006 token_rate = 1023;
1007
1008 mtu = (mp->dev->mtu + 255) >> 8;
1009 if (mtu > 63)
1010 mtu = 63;
1011
1012 bucket_size = (burst + 255) >> 8;
1013 if (bucket_size > 65535)
1014 bucket_size = 65535;
1015
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001016 switch (mp->shared->tx_bw_control) {
1017 case TX_BW_CONTROL_OLD_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001018 wrlp(mp, TX_BW_RATE, token_rate);
1019 wrlp(mp, TX_BW_MTU, mtu);
1020 wrlp(mp, TX_BW_BURST, bucket_size);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001021 break;
1022 case TX_BW_CONTROL_NEW_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001023 wrlp(mp, TX_BW_RATE_MOVED, token_rate);
1024 wrlp(mp, TX_BW_MTU_MOVED, mtu);
1025 wrlp(mp, TX_BW_BURST_MOVED, bucket_size);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001026 break;
Lennert Buytenhek1e881592008-06-02 01:57:36 +02001027 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001028}
1029
1030static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
1031{
1032 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1033 int token_rate;
1034 int bucket_size;
1035
1036 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
1037 if (token_rate > 1023)
1038 token_rate = 1023;
1039
1040 bucket_size = (burst + 255) >> 8;
1041 if (bucket_size > 65535)
1042 bucket_size = 65535;
1043
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001044 wrlp(mp, TXQ_BW_TOKENS(txq->index), token_rate << 14);
1045 wrlp(mp, TXQ_BW_CONF(txq->index), (bucket_size << 10) | token_rate);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001046}
1047
1048static void txq_set_fixed_prio_mode(struct tx_queue *txq)
1049{
1050 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1051 int off;
1052 u32 val;
1053
1054 /*
1055 * Turn on fixed priority mode.
1056 */
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001057 off = 0;
1058 switch (mp->shared->tx_bw_control) {
1059 case TX_BW_CONTROL_OLD_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001060 off = TXQ_FIX_PRIO_CONF;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001061 break;
1062 case TX_BW_CONTROL_NEW_LAYOUT:
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001063 off = TXQ_FIX_PRIO_CONF_MOVED;
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001064 break;
1065 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001066
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001067 if (off) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001068 val = rdlp(mp, off);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001069 val |= 1 << txq->index;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001070 wrlp(mp, off, val);
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02001071 }
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001072}
1073
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02001074
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001075/* mii management interface *************************************************/
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001076static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001077{
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001078 struct mv643xx_eth_shared_private *msp = dev_id;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001079
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001080 if (readl(msp->base + ERR_INT_CAUSE) & ERR_INT_SMI_DONE) {
1081 writel(~ERR_INT_SMI_DONE, msp->base + ERR_INT_CAUSE);
1082 wake_up(&msp->smi_busy_wait);
1083 return IRQ_HANDLED;
1084 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001085
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001086 return IRQ_NONE;
1087}
1088
1089static int smi_is_done(struct mv643xx_eth_shared_private *msp)
1090{
1091 return !(readl(msp->base + SMI_REG) & SMI_BUSY);
1092}
1093
1094static int smi_wait_ready(struct mv643xx_eth_shared_private *msp)
1095{
1096 if (msp->err_interrupt == NO_IRQ) {
1097 int i;
1098
1099 for (i = 0; !smi_is_done(msp); i++) {
1100 if (i == 10)
1101 return -ETIMEDOUT;
1102 msleep(10);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001103 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001104
1105 return 0;
1106 }
1107
Lennert Buytenhekee044482008-11-01 06:32:20 +01001108 if (!smi_is_done(msp)) {
1109 wait_event_timeout(msp->smi_busy_wait, smi_is_done(msp),
1110 msecs_to_jiffies(100));
1111 if (!smi_is_done(msp))
1112 return -ETIMEDOUT;
1113 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001114
1115 return 0;
1116}
1117
Lennert Buytenheked944932008-08-26 13:34:19 +02001118static int smi_bus_read(struct mii_bus *bus, int addr, int reg)
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001119{
Lennert Buytenheked944932008-08-26 13:34:19 +02001120 struct mv643xx_eth_shared_private *msp = bus->priv;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001121 void __iomem *smi_reg = msp->base + SMI_REG;
1122 int ret;
1123
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001124 if (smi_wait_ready(msp)) {
Joe Perches7542db82011-03-02 17:50:35 +00001125 pr_warn("SMI bus busy timeout\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001126 return -ETIMEDOUT;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001127 }
1128
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001129 writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001130
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001131 if (smi_wait_ready(msp)) {
Joe Perches7542db82011-03-02 17:50:35 +00001132 pr_warn("SMI bus busy timeout\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001133 return -ETIMEDOUT;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001134 }
1135
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001136 ret = readl(smi_reg);
1137 if (!(ret & SMI_READ_VALID)) {
Joe Perches7542db82011-03-02 17:50:35 +00001138 pr_warn("SMI bus read not valid\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001139 return -ENODEV;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001140 }
1141
Lennert Buytenheked944932008-08-26 13:34:19 +02001142 return ret & 0xffff;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001143}
1144
Lennert Buytenheked944932008-08-26 13:34:19 +02001145static int smi_bus_write(struct mii_bus *bus, int addr, int reg, u16 val)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001146{
Lennert Buytenheked944932008-08-26 13:34:19 +02001147 struct mv643xx_eth_shared_private *msp = bus->priv;
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001148 void __iomem *smi_reg = msp->base + SMI_REG;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001149
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001150 if (smi_wait_ready(msp)) {
Joe Perches7542db82011-03-02 17:50:35 +00001151 pr_warn("SMI bus busy timeout\n");
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001152 return -ETIMEDOUT;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001153 }
1154
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001155 writel(SMI_OPCODE_WRITE | (reg << 21) |
Lennert Buytenheked944932008-08-26 13:34:19 +02001156 (addr << 16) | (val & 0xffff), smi_reg);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001157
Lennert Buytenheked944932008-08-26 13:34:19 +02001158 if (smi_wait_ready(msp)) {
Joe Perches7542db82011-03-02 17:50:35 +00001159 pr_warn("SMI bus busy timeout\n");
Lennert Buytenheked944932008-08-26 13:34:19 +02001160 return -ETIMEDOUT;
1161 }
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02001162
1163 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001164}
1165
1166
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02001167/* statistics ***************************************************************/
1168static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev)
1169{
1170 struct mv643xx_eth_private *mp = netdev_priv(dev);
1171 struct net_device_stats *stats = &dev->stats;
1172 unsigned long tx_packets = 0;
1173 unsigned long tx_bytes = 0;
1174 unsigned long tx_dropped = 0;
1175 int i;
1176
1177 for (i = 0; i < mp->txq_count; i++) {
1178 struct tx_queue *txq = mp->txq + i;
1179
1180 tx_packets += txq->tx_packets;
1181 tx_bytes += txq->tx_bytes;
1182 tx_dropped += txq->tx_dropped;
1183 }
1184
1185 stats->tx_packets = tx_packets;
1186 stats->tx_bytes = tx_bytes;
1187 stats->tx_dropped = tx_dropped;
1188
1189 return stats;
1190}
1191
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001192static void mv643xx_eth_grab_lro_stats(struct mv643xx_eth_private *mp)
1193{
1194 u32 lro_aggregated = 0;
1195 u32 lro_flushed = 0;
1196 u32 lro_no_desc = 0;
1197 int i;
1198
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001199 for (i = 0; i < mp->rxq_count; i++) {
1200 struct rx_queue *rxq = mp->rxq + i;
1201
1202 lro_aggregated += rxq->lro_mgr.stats.aggregated;
1203 lro_flushed += rxq->lro_mgr.stats.flushed;
1204 lro_no_desc += rxq->lro_mgr.stats.no_desc;
1205 }
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001206
1207 mp->lro_counters.lro_aggregated = lro_aggregated;
1208 mp->lro_counters.lro_flushed = lro_flushed;
1209 mp->lro_counters.lro_no_desc = lro_no_desc;
1210}
1211
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001212static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001213{
Lennert Buytenhek3cb46672008-06-01 01:03:23 +02001214 return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001215}
1216
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001217static void mib_counters_clear(struct mv643xx_eth_private *mp)
1218{
1219 int i;
1220
1221 for (i = 0; i < 0x80; i += 4)
1222 mib_read(mp, i);
1223}
1224
1225static void mib_counters_update(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001226{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001227 struct mib_counters *p = &mp->mib_counters;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001228
Sebastian Siewior57e8f262009-02-16 11:28:15 +00001229 spin_lock_bh(&mp->mib_counters_lock);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001230 p->good_octets_received += mib_read(mp, 0x00);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001231 p->bad_octets_received += mib_read(mp, 0x08);
1232 p->internal_mac_transmit_err += mib_read(mp, 0x0c);
1233 p->good_frames_received += mib_read(mp, 0x10);
1234 p->bad_frames_received += mib_read(mp, 0x14);
1235 p->broadcast_frames_received += mib_read(mp, 0x18);
1236 p->multicast_frames_received += mib_read(mp, 0x1c);
1237 p->frames_64_octets += mib_read(mp, 0x20);
1238 p->frames_65_to_127_octets += mib_read(mp, 0x24);
1239 p->frames_128_to_255_octets += mib_read(mp, 0x28);
1240 p->frames_256_to_511_octets += mib_read(mp, 0x2c);
1241 p->frames_512_to_1023_octets += mib_read(mp, 0x30);
1242 p->frames_1024_to_max_octets += mib_read(mp, 0x34);
1243 p->good_octets_sent += mib_read(mp, 0x38);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001244 p->good_frames_sent += mib_read(mp, 0x40);
1245 p->excessive_collision += mib_read(mp, 0x44);
1246 p->multicast_frames_sent += mib_read(mp, 0x48);
1247 p->broadcast_frames_sent += mib_read(mp, 0x4c);
1248 p->unrec_mac_control_received += mib_read(mp, 0x50);
1249 p->fc_sent += mib_read(mp, 0x54);
1250 p->good_fc_received += mib_read(mp, 0x58);
1251 p->bad_fc_received += mib_read(mp, 0x5c);
1252 p->undersize_received += mib_read(mp, 0x60);
1253 p->fragments_received += mib_read(mp, 0x64);
1254 p->oversize_received += mib_read(mp, 0x68);
1255 p->jabber_received += mib_read(mp, 0x6c);
1256 p->mac_receive_error += mib_read(mp, 0x70);
1257 p->bad_crc_event += mib_read(mp, 0x74);
1258 p->collision += mib_read(mp, 0x78);
1259 p->late_collision += mib_read(mp, 0x7c);
Sebastian Siewior57e8f262009-02-16 11:28:15 +00001260 spin_unlock_bh(&mp->mib_counters_lock);
Lennert Buytenhek4ff34952008-09-19 05:04:57 +02001261
1262 mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ);
1263}
1264
1265static void mib_counters_timer_wrapper(unsigned long _mp)
1266{
1267 struct mv643xx_eth_private *mp = (void *)_mp;
1268
1269 mib_counters_update(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001270}
1271
1272
Lennert Buytenhek3e508032009-02-12 14:07:09 +00001273/* interrupt coalescing *****************************************************/
1274/*
1275 * Hardware coalescing parameters are set in units of 64 t_clk
1276 * cycles. I.e.:
1277 *
1278 * coal_delay_in_usec = 64000000 * register_value / t_clk_rate
1279 *
1280 * register_value = coal_delay_in_usec * t_clk_rate / 64000000
1281 *
1282 * In the ->set*() methods, we round the computed register value
1283 * to the nearest integer.
1284 */
1285static unsigned int get_rx_coal(struct mv643xx_eth_private *mp)
1286{
1287 u32 val = rdlp(mp, SDMA_CONFIG);
1288 u64 temp;
1289
1290 if (mp->shared->extended_rx_coal_limit)
1291 temp = ((val & 0x02000000) >> 10) | ((val & 0x003fff80) >> 7);
1292 else
1293 temp = (val & 0x003fff00) >> 8;
1294
1295 temp *= 64000000;
1296 do_div(temp, mp->shared->t_clk);
1297
1298 return (unsigned int)temp;
1299}
1300
1301static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int usec)
1302{
1303 u64 temp;
1304 u32 val;
1305
1306 temp = (u64)usec * mp->shared->t_clk;
1307 temp += 31999999;
1308 do_div(temp, 64000000);
1309
1310 val = rdlp(mp, SDMA_CONFIG);
1311 if (mp->shared->extended_rx_coal_limit) {
1312 if (temp > 0xffff)
1313 temp = 0xffff;
1314 val &= ~0x023fff80;
1315 val |= (temp & 0x8000) << 10;
1316 val |= (temp & 0x7fff) << 7;
1317 } else {
1318 if (temp > 0x3fff)
1319 temp = 0x3fff;
1320 val &= ~0x003fff00;
1321 val |= (temp & 0x3fff) << 8;
1322 }
1323 wrlp(mp, SDMA_CONFIG, val);
1324}
1325
1326static unsigned int get_tx_coal(struct mv643xx_eth_private *mp)
1327{
1328 u64 temp;
1329
1330 temp = (rdlp(mp, TX_FIFO_URGENT_THRESHOLD) & 0x3fff0) >> 4;
1331 temp *= 64000000;
1332 do_div(temp, mp->shared->t_clk);
1333
1334 return (unsigned int)temp;
1335}
1336
1337static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int usec)
1338{
1339 u64 temp;
1340
1341 temp = (u64)usec * mp->shared->t_clk;
1342 temp += 31999999;
1343 do_div(temp, 64000000);
1344
1345 if (temp > 0x3fff)
1346 temp = 0x3fff;
1347
1348 wrlp(mp, TX_FIFO_URGENT_THRESHOLD, temp << 4);
1349}
1350
1351
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001352/* ethtool ******************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +02001353struct mv643xx_eth_stats {
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001354 char stat_string[ETH_GSTRING_LEN];
1355 int sizeof_stat;
Lennert Buytenhek16820052008-06-01 11:40:29 +02001356 int netdev_off;
1357 int mp_off;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001358};
1359
Lennert Buytenhek16820052008-06-01 11:40:29 +02001360#define SSTAT(m) \
1361 { #m, FIELD_SIZEOF(struct net_device_stats, m), \
1362 offsetof(struct net_device, stats.m), -1 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001363
Lennert Buytenhek16820052008-06-01 11:40:29 +02001364#define MIBSTAT(m) \
1365 { #m, FIELD_SIZEOF(struct mib_counters, m), \
1366 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1367
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001368#define LROSTAT(m) \
1369 { #m, FIELD_SIZEOF(struct lro_counters, m), \
1370 -1, offsetof(struct mv643xx_eth_private, lro_counters.m) }
1371
Lennert Buytenhek16820052008-06-01 11:40:29 +02001372static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
1373 SSTAT(rx_packets),
1374 SSTAT(tx_packets),
1375 SSTAT(rx_bytes),
1376 SSTAT(tx_bytes),
1377 SSTAT(rx_errors),
1378 SSTAT(tx_errors),
1379 SSTAT(rx_dropped),
1380 SSTAT(tx_dropped),
1381 MIBSTAT(good_octets_received),
1382 MIBSTAT(bad_octets_received),
1383 MIBSTAT(internal_mac_transmit_err),
1384 MIBSTAT(good_frames_received),
1385 MIBSTAT(bad_frames_received),
1386 MIBSTAT(broadcast_frames_received),
1387 MIBSTAT(multicast_frames_received),
1388 MIBSTAT(frames_64_octets),
1389 MIBSTAT(frames_65_to_127_octets),
1390 MIBSTAT(frames_128_to_255_octets),
1391 MIBSTAT(frames_256_to_511_octets),
1392 MIBSTAT(frames_512_to_1023_octets),
1393 MIBSTAT(frames_1024_to_max_octets),
1394 MIBSTAT(good_octets_sent),
1395 MIBSTAT(good_frames_sent),
1396 MIBSTAT(excessive_collision),
1397 MIBSTAT(multicast_frames_sent),
1398 MIBSTAT(broadcast_frames_sent),
1399 MIBSTAT(unrec_mac_control_received),
1400 MIBSTAT(fc_sent),
1401 MIBSTAT(good_fc_received),
1402 MIBSTAT(bad_fc_received),
1403 MIBSTAT(undersize_received),
1404 MIBSTAT(fragments_received),
1405 MIBSTAT(oversize_received),
1406 MIBSTAT(jabber_received),
1407 MIBSTAT(mac_receive_error),
1408 MIBSTAT(bad_crc_event),
1409 MIBSTAT(collision),
1410 MIBSTAT(late_collision),
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001411 LROSTAT(lro_aggregated),
1412 LROSTAT(lro_flushed),
1413 LROSTAT(lro_no_desc),
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001414};
1415
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001416static int
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001417mv643xx_eth_get_settings_phy(struct mv643xx_eth_private *mp,
1418 struct ethtool_cmd *cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001419{
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001420 int err;
1421
Lennert Buytenheked944932008-08-26 13:34:19 +02001422 err = phy_read_status(mp->phy);
1423 if (err == 0)
1424 err = phy_ethtool_gset(mp->phy, cmd);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001425
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001426 /*
1427 * The MAC does not support 1000baseT_Half.
1428 */
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001429 cmd->supported &= ~SUPPORTED_1000baseT_Half;
1430 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1431
1432 return err;
1433}
1434
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001435static int
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001436mv643xx_eth_get_settings_phyless(struct mv643xx_eth_private *mp,
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001437 struct ethtool_cmd *cmd)
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001438{
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001439 u32 port_status;
1440
Lennert Buytenhek37a60842008-11-20 03:57:36 -08001441 port_status = rdlp(mp, PORT_STATUS);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001442
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001443 cmd->supported = SUPPORTED_MII;
1444 cmd->advertising = ADVERTISED_MII;
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02001445 switch (port_status & PORT_SPEED_MASK) {
1446 case PORT_SPEED_10:
1447 cmd->speed = SPEED_10;
1448 break;
1449 case PORT_SPEED_100:
1450 cmd->speed = SPEED_100;
1451 break;
1452 case PORT_SPEED_1000:
1453 cmd->speed = SPEED_1000;
1454 break;
1455 default:
1456 cmd->speed = -1;
1457 break;
1458 }
1459 cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001460 cmd->port = PORT_MII;
1461 cmd->phy_address = 0;
1462 cmd->transceiver = XCVR_INTERNAL;
1463 cmd->autoneg = AUTONEG_DISABLE;
1464 cmd->maxtxpkt = 1;
1465 cmd->maxrxpkt = 1;
1466
1467 return 0;
1468}
1469
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001470static int
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001471mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1472{
1473 struct mv643xx_eth_private *mp = netdev_priv(dev);
1474
1475 if (mp->phy != NULL)
1476 return mv643xx_eth_get_settings_phy(mp, cmd);
1477 else
1478 return mv643xx_eth_get_settings_phyless(mp, cmd);
1479}
1480
1481static int
Lennert Buytenhek10a99482008-11-20 03:57:16 -08001482mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001483{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001484 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001485
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001486 if (mp->phy == NULL)
1487 return -EINVAL;
1488
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001489 /*
1490 * The MAC does not support 1000baseT_Half.
1491 */
1492 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1493
Lennert Buytenheked944932008-08-26 13:34:19 +02001494 return phy_ethtool_sset(mp->phy, cmd);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001495}
1496
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001497static void mv643xx_eth_get_drvinfo(struct net_device *dev,
1498 struct ethtool_drvinfo *drvinfo)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001499{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001500 strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
1501 strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001502 strncpy(drvinfo->fw_version, "N/A", 32);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001503 strncpy(drvinfo->bus_info, "platform", 32);
Lennert Buytenhek16820052008-06-01 11:40:29 +02001504 drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001505}
1506
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001507static int mv643xx_eth_nway_reset(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001508{
Lennert Buytenheke5371492008-06-01 02:18:13 +02001509 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001510
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001511 if (mp->phy == NULL)
1512 return -EINVAL;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001513
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00001514 return genphy_restart_aneg(mp->phy);
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02001515}
1516
Lennert Buytenhek3e508032009-02-12 14:07:09 +00001517static int
1518mv643xx_eth_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
1519{
1520 struct mv643xx_eth_private *mp = netdev_priv(dev);
1521
1522 ec->rx_coalesce_usecs = get_rx_coal(mp);
1523 ec->tx_coalesce_usecs = get_tx_coal(mp);
1524
1525 return 0;
1526}
1527
1528static int
1529mv643xx_eth_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
1530{
1531 struct mv643xx_eth_private *mp = netdev_priv(dev);
1532
1533 set_rx_coal(mp, ec->rx_coalesce_usecs);
1534 set_tx_coal(mp, ec->tx_coalesce_usecs);
1535
1536 return 0;
1537}
1538
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001539static void
1540mv643xx_eth_get_ringparam(struct net_device *dev, struct ethtool_ringparam *er)
1541{
1542 struct mv643xx_eth_private *mp = netdev_priv(dev);
1543
1544 er->rx_max_pending = 4096;
1545 er->tx_max_pending = 4096;
1546 er->rx_mini_max_pending = 0;
1547 er->rx_jumbo_max_pending = 0;
1548
1549 er->rx_pending = mp->rx_ring_size;
1550 er->tx_pending = mp->tx_ring_size;
1551 er->rx_mini_pending = 0;
1552 er->rx_jumbo_pending = 0;
1553}
1554
1555static int
1556mv643xx_eth_set_ringparam(struct net_device *dev, struct ethtool_ringparam *er)
1557{
1558 struct mv643xx_eth_private *mp = netdev_priv(dev);
1559
1560 if (er->rx_mini_pending || er->rx_jumbo_pending)
1561 return -EINVAL;
1562
1563 mp->rx_ring_size = er->rx_pending < 4096 ? er->rx_pending : 4096;
1564 mp->tx_ring_size = er->tx_pending < 4096 ? er->tx_pending : 4096;
1565
1566 if (netif_running(dev)) {
1567 mv643xx_eth_stop(dev);
1568 if (mv643xx_eth_open(dev)) {
Joe Perches7542db82011-03-02 17:50:35 +00001569 netdev_err(dev,
1570 "fatal error on re-opening device after ring param change\n");
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001571 return -ENOMEM;
1572 }
1573 }
1574
1575 return 0;
1576}
1577
Lennert Buytenhekd888b372009-02-12 14:07:56 +00001578static u32
1579mv643xx_eth_get_rx_csum(struct net_device *dev)
1580{
1581 struct mv643xx_eth_private *mp = netdev_priv(dev);
1582
1583 return !!(rdlp(mp, PORT_CONFIG) & 0x02000000);
1584}
1585
1586static int
1587mv643xx_eth_set_rx_csum(struct net_device *dev, u32 rx_csum)
1588{
1589 struct mv643xx_eth_private *mp = netdev_priv(dev);
1590
1591 wrlp(mp, PORT_CONFIG, rx_csum ? 0x02000000 : 0x00000000);
1592
1593 return 0;
1594}
1595
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001596static void mv643xx_eth_get_strings(struct net_device *dev,
1597 uint32_t stringset, uint8_t *data)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001598{
1599 int i;
1600
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001601 if (stringset == ETH_SS_STATS) {
1602 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001603 memcpy(data + i * ETH_GSTRING_LEN,
Lennert Buytenhek16820052008-06-01 11:40:29 +02001604 mv643xx_eth_stats[i].stat_string,
Lennert Buytenheke5371492008-06-01 02:18:13 +02001605 ETH_GSTRING_LEN);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001606 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001607 }
1608}
1609
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001610static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
1611 struct ethtool_stats *stats,
1612 uint64_t *data)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001613{
Lennert Buytenhekb9873842008-08-24 05:59:16 +02001614 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001615 int i;
1616
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02001617 mv643xx_eth_get_stats(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001618 mib_counters_update(mp);
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001619 mv643xx_eth_grab_lro_stats(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001620
Lennert Buytenhek16820052008-06-01 11:40:29 +02001621 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1622 const struct mv643xx_eth_stats *stat;
1623 void *p;
1624
1625 stat = mv643xx_eth_stats + i;
1626
1627 if (stat->netdev_off >= 0)
1628 p = ((void *)mp->dev) + stat->netdev_off;
1629 else
1630 p = ((void *)mp) + stat->mp_off;
1631
1632 data[i] = (stat->sizeof_stat == 8) ?
1633 *(uint64_t *)p : *(uint32_t *)p;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001634 }
1635}
1636
Ben Hutchings1437ce32010-06-30 02:44:32 +00001637static int mv643xx_eth_set_flags(struct net_device *dev, u32 data)
1638{
1639 return ethtool_op_set_flags(dev, data, ETH_FLAG_LRO);
1640}
1641
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001642static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001643{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001644 if (sset == ETH_SS_STATS)
Lennert Buytenhek16820052008-06-01 11:40:29 +02001645 return ARRAY_SIZE(mv643xx_eth_stats);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001646
1647 return -EOPNOTSUPP;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001648}
1649
Lennert Buytenheke5371492008-06-01 02:18:13 +02001650static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001651 .get_settings = mv643xx_eth_get_settings,
1652 .set_settings = mv643xx_eth_set_settings,
1653 .get_drvinfo = mv643xx_eth_get_drvinfo,
1654 .nway_reset = mv643xx_eth_nway_reset,
Ben Hutchingsed4ba4b2010-12-09 12:10:25 +00001655 .get_link = ethtool_op_get_link,
Lennert Buytenhek3e508032009-02-12 14:07:09 +00001656 .get_coalesce = mv643xx_eth_get_coalesce,
1657 .set_coalesce = mv643xx_eth_set_coalesce,
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001658 .get_ringparam = mv643xx_eth_get_ringparam,
1659 .set_ringparam = mv643xx_eth_set_ringparam,
Lennert Buytenhekd888b372009-02-12 14:07:56 +00001660 .get_rx_csum = mv643xx_eth_get_rx_csum,
1661 .set_rx_csum = mv643xx_eth_set_rx_csum,
Lennert Buytenhekb8df1842009-02-12 14:08:07 +00001662 .set_tx_csum = ethtool_op_set_tx_csum,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001663 .set_sg = ethtool_op_set_sg,
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001664 .get_strings = mv643xx_eth_get_strings,
1665 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001666 .get_flags = ethtool_op_get_flags,
Ben Hutchings1437ce32010-06-30 02:44:32 +00001667 .set_flags = mv643xx_eth_set_flags,
Lennert Buytenheke5371492008-06-01 02:18:13 +02001668 .get_sset_count = mv643xx_eth_get_sset_count,
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001669};
1670
1671
1672/* address handling *********************************************************/
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001673static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001674{
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001675 unsigned int mac_h = rdlp(mp, MAC_ADDR_HIGH);
1676 unsigned int mac_l = rdlp(mp, MAC_ADDR_LOW);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001677
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001678 addr[0] = (mac_h >> 24) & 0xff;
1679 addr[1] = (mac_h >> 16) & 0xff;
1680 addr[2] = (mac_h >> 8) & 0xff;
1681 addr[3] = mac_h & 0xff;
1682 addr[4] = (mac_l >> 8) & 0xff;
1683 addr[5] = mac_l & 0xff;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001684}
1685
Lennert Buytenhek5daffe92008-06-01 02:52:41 +02001686static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001687{
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001688 wrlp(mp, MAC_ADDR_HIGH,
1689 (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]);
1690 wrlp(mp, MAC_ADDR_LOW, (addr[4] << 8) | addr[5]);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001691}
1692
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001693static u32 uc_addr_filter_mask(struct net_device *dev)
1694{
Jiri Pirkoccffad252009-05-22 23:22:17 +00001695 struct netdev_hw_addr *ha;
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001696 u32 nibbles;
1697
1698 if (dev->flags & IFF_PROMISC)
1699 return 0;
1700
1701 nibbles = 1 << (dev->dev_addr[5] & 0x0f);
Jiri Pirko32e7bfc2010-01-25 13:36:10 -08001702 netdev_for_each_uc_addr(ha, dev) {
Jiri Pirkoccffad252009-05-22 23:22:17 +00001703 if (memcmp(dev->dev_addr, ha->addr, 5))
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001704 return 0;
Jiri Pirkoccffad252009-05-22 23:22:17 +00001705 if ((dev->dev_addr[5] ^ ha->addr[5]) & 0xf0)
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001706 return 0;
1707
Jiri Pirkoccffad252009-05-22 23:22:17 +00001708 nibbles |= 1 << (ha->addr[5] & 0x0f);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001709 }
1710
1711 return nibbles;
1712}
1713
1714static void mv643xx_eth_program_unicast_filter(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001715{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001716 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001717 u32 port_config;
1718 u32 nibbles;
1719 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001720
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001721 uc_addr_set(mp, dev->dev_addr);
1722
Prabhanjan Sarnaik6877f542009-06-18 11:35:02 +00001723 port_config = rdlp(mp, PORT_CONFIG) & ~UNICAST_PROMISCUOUS_MODE;
1724
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001725 nibbles = uc_addr_filter_mask(dev);
1726 if (!nibbles) {
1727 port_config |= UNICAST_PROMISCUOUS_MODE;
Prabhanjan Sarnaik6877f542009-06-18 11:35:02 +00001728 nibbles = 0xffff;
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001729 }
1730
1731 for (i = 0; i < 16; i += 4) {
1732 int off = UNICAST_TABLE(mp->port_num) + i;
1733 u32 v;
1734
1735 v = 0;
1736 if (nibbles & 1)
1737 v |= 0x00000001;
1738 if (nibbles & 2)
1739 v |= 0x00000100;
1740 if (nibbles & 4)
1741 v |= 0x00010000;
1742 if (nibbles & 8)
1743 v |= 0x01000000;
1744 nibbles >>= 4;
1745
1746 wrl(mp, off, v);
1747 }
1748
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001749 wrlp(mp, PORT_CONFIG, port_config);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001750}
1751
Lennert Buytenhek69876562008-06-01 11:43:32 +02001752static int addr_crc(unsigned char *addr)
1753{
1754 int crc = 0;
1755 int i;
1756
1757 for (i = 0; i < 6; i++) {
1758 int j;
1759
1760 crc = (crc ^ addr[i]) << 8;
1761 for (j = 7; j >= 0; j--) {
1762 if (crc & (0x100 << j))
1763 crc ^= 0x107 << j;
1764 }
1765 }
1766
1767 return crc;
1768}
1769
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001770static void mv643xx_eth_program_multicast_filter(struct net_device *dev)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001771{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001772 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001773 u32 *mc_spec;
1774 u32 *mc_other;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001775 struct netdev_hw_addr *ha;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001776 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001777
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001778 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001779 int port_num;
1780 u32 accept;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001781
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001782oom:
1783 port_num = mp->port_num;
1784 accept = 0x01010101;
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001785 for (i = 0; i < 0x100; i += 4) {
1786 wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
1787 wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001788 }
1789 return;
1790 }
1791
Sebastian Siewior82a5bd62009-02-14 23:26:18 +00001792 mc_spec = kmalloc(0x200, GFP_ATOMIC);
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001793 if (mc_spec == NULL)
1794 goto oom;
1795 mc_other = mc_spec + (0x100 >> 2);
1796
1797 memset(mc_spec, 0, 0x100);
1798 memset(mc_other, 0, 0x100);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001799
Jiri Pirko22bedad32010-04-01 21:22:57 +00001800 netdev_for_each_mc_addr(ha, dev) {
1801 u8 *a = ha->addr;
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001802 u32 *table;
1803 int entry;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001804
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001805 if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001806 table = mc_spec;
1807 entry = a[5];
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001808 } else {
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001809 table = mc_other;
1810 entry = addr_crc(a);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001811 }
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001812
Lennert Buytenhek2b448332009-01-19 17:17:18 -08001813 table[entry >> 2] |= 1 << (8 * (entry & 3));
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02001814 }
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001815
1816 for (i = 0; i < 0x100; i += 4) {
1817 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, mc_spec[i >> 2]);
1818 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, mc_other[i >> 2]);
1819 }
1820
1821 kfree(mc_spec);
1822}
1823
1824static void mv643xx_eth_set_rx_mode(struct net_device *dev)
1825{
1826 mv643xx_eth_program_unicast_filter(dev);
1827 mv643xx_eth_program_multicast_filter(dev);
1828}
1829
1830static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
1831{
1832 struct sockaddr *sa = addr;
1833
Denis Kirjanova29ec082009-12-08 20:36:00 -08001834 if (!is_valid_ether_addr(sa->sa_data))
1835 return -EINVAL;
1836
Lennert Buytenhek66e63ff2008-11-20 03:58:27 -08001837 memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN);
1838
1839 netif_addr_lock_bh(dev);
1840 mv643xx_eth_program_unicast_filter(dev);
1841 netif_addr_unlock_bh(dev);
1842
1843 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001844}
1845
1846
1847/* rx/tx queue initialisation ***********************************************/
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001848static int rxq_init(struct mv643xx_eth_private *mp, int index)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001849{
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001850 struct rx_queue *rxq = mp->rxq + index;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001851 struct rx_desc *rx_desc;
1852 int size;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001853 int i;
1854
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001855 rxq->index = index;
1856
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001857 rxq->rx_ring_size = mp->rx_ring_size;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001858
1859 rxq->rx_desc_count = 0;
1860 rxq->rx_curr_desc = 0;
1861 rxq->rx_used_desc = 0;
1862
1863 size = rxq->rx_ring_size * sizeof(struct rx_desc);
1864
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001865 if (index == 0 && size <= mp->rx_desc_sram_size) {
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001866 rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
1867 mp->rx_desc_sram_size);
1868 rxq->rx_desc_dma = mp->rx_desc_sram_addr;
1869 } else {
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07001870 rxq->rx_desc_area = dma_alloc_coherent(mp->dev->dev.parent,
1871 size, &rxq->rx_desc_dma,
1872 GFP_KERNEL);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001873 }
1874
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001875 if (rxq->rx_desc_area == NULL) {
Joe Perches7542db82011-03-02 17:50:35 +00001876 netdev_err(mp->dev,
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001877 "can't allocate rx ring (%d bytes)\n", size);
1878 goto out;
1879 }
1880 memset(rxq->rx_desc_area, 0, size);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001881
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001882 rxq->rx_desc_area_size = size;
1883 rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
1884 GFP_KERNEL);
1885 if (rxq->rx_skb == NULL) {
Joe Perches7542db82011-03-02 17:50:35 +00001886 netdev_err(mp->dev, "can't allocate rx skb ring\n");
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001887 goto out_free;
1888 }
1889
1890 rx_desc = (struct rx_desc *)rxq->rx_desc_area;
1891 for (i = 0; i < rxq->rx_ring_size; i++) {
Lennert Buytenhek9da78742008-08-23 23:45:28 +02001892 int nexti;
1893
1894 nexti = i + 1;
1895 if (nexti == rxq->rx_ring_size)
1896 nexti = 0;
1897
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001898 rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
1899 nexti * sizeof(struct rx_desc);
1900 }
1901
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001902 rxq->lro_mgr.dev = mp->dev;
1903 memset(&rxq->lro_mgr.stats, 0, sizeof(rxq->lro_mgr.stats));
1904 rxq->lro_mgr.features = LRO_F_NAPI;
1905 rxq->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1906 rxq->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1907 rxq->lro_mgr.max_desc = ARRAY_SIZE(rxq->lro_arr);
1908 rxq->lro_mgr.max_aggr = 32;
1909 rxq->lro_mgr.frag_align_pad = 0;
1910 rxq->lro_mgr.lro_arr = rxq->lro_arr;
1911 rxq->lro_mgr.get_skb_header = mv643xx_get_skb_header;
1912
1913 memset(&rxq->lro_arr, 0, sizeof(rxq->lro_arr));
Lennert Buytenhekeaf5d592009-02-12 14:08:39 +00001914
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001915 return 0;
1916
1917
1918out_free:
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001919 if (index == 0 && size <= mp->rx_desc_sram_size)
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001920 iounmap(rxq->rx_desc_area);
1921 else
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07001922 dma_free_coherent(mp->dev->dev.parent, size,
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001923 rxq->rx_desc_area,
1924 rxq->rx_desc_dma);
1925
1926out:
1927 return -ENOMEM;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001928}
1929
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001930static void rxq_deinit(struct rx_queue *rxq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001931{
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001932 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
1933 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001934
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001935 rxq_disable(rxq);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001936
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001937 for (i = 0; i < rxq->rx_ring_size; i++) {
1938 if (rxq->rx_skb[i]) {
1939 dev_kfree_skb(rxq->rx_skb[i]);
1940 rxq->rx_desc_count--;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001941 }
1942 }
1943
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001944 if (rxq->rx_desc_count) {
Joe Perches7542db82011-03-02 17:50:35 +00001945 netdev_err(mp->dev, "error freeing rx ring -- %d skbs stuck\n",
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001946 rxq->rx_desc_count);
1947 }
1948
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001949 if (rxq->index == 0 &&
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02001950 rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001951 iounmap(rxq->rx_desc_area);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001952 else
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07001953 dma_free_coherent(mp->dev->dev.parent, rxq->rx_desc_area_size,
Lennert Buytenhek8a578112008-06-01 18:09:35 +02001954 rxq->rx_desc_area, rxq->rx_desc_dma);
1955
1956 kfree(rxq->rx_skb);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001957}
1958
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001959static int txq_init(struct mv643xx_eth_private *mp, int index)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001960{
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001961 struct tx_queue *txq = mp->txq + index;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001962 struct tx_desc *tx_desc;
1963 int size;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001964 int i;
1965
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02001966 txq->index = index;
1967
Lennert Buytenheke7d2f4d2009-02-12 14:07:37 +00001968 txq->tx_ring_size = mp->tx_ring_size;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001969
1970 txq->tx_desc_count = 0;
1971 txq->tx_curr_desc = 0;
1972 txq->tx_used_desc = 0;
1973
1974 size = txq->tx_ring_size * sizeof(struct tx_desc);
1975
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02001976 if (index == 0 && size <= mp->tx_desc_sram_size) {
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001977 txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
1978 mp->tx_desc_sram_size);
1979 txq->tx_desc_dma = mp->tx_desc_sram_addr;
1980 } else {
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07001981 txq->tx_desc_area = dma_alloc_coherent(mp->dev->dev.parent,
1982 size, &txq->tx_desc_dma,
1983 GFP_KERNEL);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001984 }
1985
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001986 if (txq->tx_desc_area == NULL) {
Joe Perches7542db82011-03-02 17:50:35 +00001987 netdev_err(mp->dev,
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001988 "can't allocate tx ring (%d bytes)\n", size);
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +02001989 return -ENOMEM;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001990 }
1991 memset(txq->tx_desc_area, 0, size);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02001992
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001993 txq->tx_desc_area_size = size;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02001994
1995 tx_desc = (struct tx_desc *)txq->tx_desc_area;
1996 for (i = 0; i < txq->tx_ring_size; i++) {
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02001997 struct tx_desc *txd = tx_desc + i;
Lennert Buytenhek9da78742008-08-23 23:45:28 +02001998 int nexti;
1999
2000 nexti = i + 1;
2001 if (nexti == txq->tx_ring_size)
2002 nexti = 0;
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02002003
2004 txd->cmd_sts = 0;
2005 txd->next_desc_ptr = txq->tx_desc_dma +
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002006 nexti * sizeof(struct tx_desc);
2007 }
2008
Lennert Buytenhek99ab08e2008-08-28 05:53:18 +02002009 skb_queue_head_init(&txq->tx_skb);
2010
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002011 return 0;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002012}
2013
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002014static void txq_deinit(struct tx_queue *txq)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002015{
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002016 struct mv643xx_eth_private *mp = txq_to_mp(txq);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002017
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002018 txq_disable(txq);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002019 txq_reclaim(txq, txq->tx_ring_size, 1);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002020
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002021 BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002022
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002023 if (txq->index == 0 &&
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002024 txq->tx_desc_area_size <= mp->tx_desc_sram_size)
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002025 iounmap(txq->tx_desc_area);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002026 else
Gabriel Pauberteb0519b2009-05-17 21:16:47 -07002027 dma_free_coherent(mp->dev->dev.parent, txq->tx_desc_area_size,
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002028 txq->tx_desc_area, txq->tx_desc_dma);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002029}
2030
2031
2032/* netdev ops and related ***************************************************/
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002033static int mv643xx_eth_collect_events(struct mv643xx_eth_private *mp)
2034{
2035 u32 int_cause;
2036 u32 int_cause_ext;
2037
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002038 int_cause = rdlp(mp, INT_CAUSE) & mp->int_mask;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002039 if (int_cause == 0)
2040 return 0;
2041
2042 int_cause_ext = 0;
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002043 if (int_cause & INT_EXT) {
2044 int_cause &= ~INT_EXT;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002045 int_cause_ext = rdlp(mp, INT_CAUSE_EXT);
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002046 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002047
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002048 if (int_cause) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002049 wrlp(mp, INT_CAUSE, ~int_cause);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002050 mp->work_tx_end |= ((int_cause & INT_TX_END) >> 19) &
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002051 ~(rdlp(mp, TXQ_COMMAND) & 0xff);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002052 mp->work_rx |= (int_cause & INT_RX) >> 2;
2053 }
2054
2055 int_cause_ext &= INT_EXT_LINK_PHY | INT_EXT_TX;
2056 if (int_cause_ext) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002057 wrlp(mp, INT_CAUSE_EXT, ~int_cause_ext);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002058 if (int_cause_ext & INT_EXT_LINK_PHY)
2059 mp->work_link = 1;
2060 mp->work_tx |= int_cause_ext & INT_EXT_TX;
2061 }
2062
2063 return 1;
2064}
2065
2066static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
2067{
2068 struct net_device *dev = (struct net_device *)dev_id;
2069 struct mv643xx_eth_private *mp = netdev_priv(dev);
2070
2071 if (unlikely(!mv643xx_eth_collect_events(mp)))
2072 return IRQ_NONE;
2073
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002074 wrlp(mp, INT_MASK, 0);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002075 napi_schedule(&mp->napi);
2076
2077 return IRQ_HANDLED;
2078}
2079
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002080static void handle_link_event(struct mv643xx_eth_private *mp)
2081{
2082 struct net_device *dev = mp->dev;
2083 u32 port_status;
2084 int speed;
2085 int duplex;
2086 int fc;
2087
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002088 port_status = rdlp(mp, PORT_STATUS);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002089 if (!(port_status & LINK_UP)) {
2090 if (netif_carrier_ok(dev)) {
2091 int i;
2092
Joe Perches7542db82011-03-02 17:50:35 +00002093 netdev_info(dev, "link down\n");
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002094
2095 netif_carrier_off(dev);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002096
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002097 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002098 struct tx_queue *txq = mp->txq + i;
2099
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002100 txq_reclaim(txq, txq->tx_ring_size, 1);
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002101 txq_reset_hw_ptr(txq);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002102 }
2103 }
2104 return;
2105 }
2106
2107 switch (port_status & PORT_SPEED_MASK) {
2108 case PORT_SPEED_10:
2109 speed = 10;
2110 break;
2111 case PORT_SPEED_100:
2112 speed = 100;
2113 break;
2114 case PORT_SPEED_1000:
2115 speed = 1000;
2116 break;
2117 default:
2118 speed = -1;
2119 break;
2120 }
2121 duplex = (port_status & FULL_DUPLEX) ? 1 : 0;
2122 fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0;
2123
Joe Perches7542db82011-03-02 17:50:35 +00002124 netdev_info(dev, "link up, %d Mb/s, %s duplex, flow control %sabled\n",
2125 speed, duplex ? "full" : "half", fc ? "en" : "dis");
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002126
Lennert Buytenhek4fdeca32008-08-28 05:39:13 +02002127 if (!netif_carrier_ok(dev))
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002128 netif_carrier_on(dev);
Lennert Buytenhek2f7eb472008-07-24 06:22:59 +02002129}
2130
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002131static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002132{
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002133 struct mv643xx_eth_private *mp;
2134 int work_done;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002135
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002136 mp = container_of(napi, struct mv643xx_eth_private, napi);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002137
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002138 if (unlikely(mp->oom)) {
2139 mp->oom = 0;
2140 del_timer(&mp->rx_oom);
2141 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002142
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002143 work_done = 0;
2144 while (work_done < budget) {
2145 u8 queue_mask;
2146 int queue;
2147 int work_tbd;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002148
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002149 if (mp->work_link) {
2150 mp->work_link = 0;
2151 handle_link_event(mp);
Lennert Buytenhek26ef1f12009-05-06 03:01:10 +00002152 work_done++;
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002153 continue;
Lennert Buytenhek226bb6b2008-06-02 01:47:21 +02002154 }
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002155
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002156 queue_mask = mp->work_tx | mp->work_tx_end | mp->work_rx;
2157 if (likely(!mp->oom))
2158 queue_mask |= mp->work_rx_refill;
2159
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002160 if (!queue_mask) {
2161 if (mv643xx_eth_collect_events(mp))
2162 continue;
2163 break;
2164 }
2165
2166 queue = fls(queue_mask) - 1;
2167 queue_mask = 1 << queue;
2168
2169 work_tbd = budget - work_done;
2170 if (work_tbd > 16)
2171 work_tbd = 16;
2172
2173 if (mp->work_tx_end & queue_mask) {
2174 txq_kick(mp->txq + queue);
2175 } else if (mp->work_tx & queue_mask) {
2176 work_done += txq_reclaim(mp->txq + queue, work_tbd, 0);
2177 txq_maybe_wake(mp->txq + queue);
2178 } else if (mp->work_rx & queue_mask) {
2179 work_done += rxq_process(mp->rxq + queue, work_tbd);
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002180 } else if (!mp->oom && (mp->work_rx_refill & queue_mask)) {
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002181 work_done += rxq_refill(mp->rxq + queue, work_tbd);
2182 } else {
2183 BUG();
2184 }
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002185 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002186
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002187 if (work_done < budget) {
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002188 if (mp->oom)
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002189 mod_timer(&mp->rx_oom, jiffies + (HZ / 10));
2190 napi_complete(napi);
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002191 wrlp(mp, INT_MASK, mp->int_mask);
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002192 }
2193
2194 return work_done;
2195}
2196
2197static inline void oom_timer_wrapper(unsigned long data)
2198{
2199 struct mv643xx_eth_private *mp = (void *)data;
2200
2201 napi_schedule(&mp->napi);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002202}
2203
Lennert Buytenheke5371492008-06-01 02:18:13 +02002204static void phy_reset(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002205{
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002206 int data;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002207
Lennert Buytenheked944932008-08-26 13:34:19 +02002208 data = phy_read(mp->phy, MII_BMCR);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002209 if (data < 0)
2210 return;
2211
Lennert Buytenhek7f106c12008-07-15 02:28:47 +02002212 data |= BMCR_RESET;
Lennert Buytenheked944932008-08-26 13:34:19 +02002213 if (phy_write(mp->phy, MII_BMCR, data) < 0)
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002214 return;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002215
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002216 do {
Lennert Buytenheked944932008-08-26 13:34:19 +02002217 data = phy_read(mp->phy, MII_BMCR);
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002218 } while (data >= 0 && data & BMCR_RESET);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002219}
2220
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002221static void port_start(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002222{
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002223 u32 pscr;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002224 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002225
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002226 /*
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02002227 * Perform PHY reset, if there is a PHY.
2228 */
Lennert Buytenheked944932008-08-26 13:34:19 +02002229 if (mp->phy != NULL) {
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02002230 struct ethtool_cmd cmd;
2231
2232 mv643xx_eth_get_settings(mp->dev, &cmd);
2233 phy_reset(mp);
2234 mv643xx_eth_set_settings(mp->dev, &cmd);
2235 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002236
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002237 /*
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002238 * Configure basic link parameters.
2239 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002240 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002241
2242 pscr |= SERIAL_PORT_ENABLE;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002243 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002244
2245 pscr |= DO_NOT_FORCE_LINK_FAIL;
Lennert Buytenheked944932008-08-26 13:34:19 +02002246 if (mp->phy == NULL)
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002247 pscr |= FORCE_LINK_PASS;
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002248 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002249
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002250 /*
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002251 * Configure TX path and queues.
2252 */
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002253 tx_set_rate(mp, 1000000000, 16777216);
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002254 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002255 struct tx_queue *txq = mp->txq + i;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002256
Lennert Buytenhek6b368f62008-07-11 19:38:34 +02002257 txq_reset_hw_ptr(txq);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002258 txq_set_rate(txq, 1000000000, 16777216);
2259 txq_set_fixed_prio_mode(txq);
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002260 }
2261
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002262 /*
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +02002263 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
Lennert Buytenhek170e7102008-09-19 02:58:50 +02002264 * frames to RX queue #0, and include the pseudo-header when
2265 * calculating receive checksums.
Lennert Buytenhekd9a073e2008-06-01 01:22:06 +02002266 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002267 wrlp(mp, PORT_CONFIG, 0x02000000);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002268
Lennert Buytenhek376489a2008-06-01 01:17:44 +02002269 /*
2270 * Treat BPDUs as normal multicasts, and disable partition mode.
2271 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002272 wrlp(mp, PORT_CONFIG_EXT, 0x00000000);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002273
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002274 /*
Lennert Buytenhek5a893922009-03-13 15:48:02 -07002275 * Add configured unicast addresses to address filter table.
2276 */
2277 mv643xx_eth_program_unicast_filter(mp->dev);
2278
2279 /*
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002280 * Enable the receive queues.
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002281 */
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002282 for (i = 0; i < mp->rxq_count; i++) {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002283 struct rx_queue *rxq = mp->rxq + i;
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002284 u32 addr;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002285
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002286 addr = (u32)rxq->rx_desc_dma;
2287 addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002288 wrlp(mp, RXQ_CURRENT_DESC_PTR(i), addr);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002289
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002290 rxq_enable(rxq);
2291 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002292}
2293
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002294static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private *mp)
2295{
2296 int skb_size;
2297
2298 /*
2299 * Reserve 2+14 bytes for an ethernet header (the hardware
2300 * automatically prepends 2 bytes of dummy data to each
2301 * received packet), 16 bytes for up to four VLAN tags, and
2302 * 4 bytes for the trailing FCS -- 36 bytes total.
2303 */
2304 skb_size = mp->dev->mtu + 36;
2305
2306 /*
2307 * Make sure that the skb size is a multiple of 8 bytes, as
2308 * the lower three bits of the receive descriptor's buffer
2309 * size field are ignored by the hardware.
2310 */
2311 mp->skb_size = (skb_size + 7) & ~7;
Lennert Buytenhek7fd96ce2009-05-06 03:01:22 +00002312
2313 /*
2314 * If NET_SKB_PAD is smaller than a cache line,
2315 * netdev_alloc_skb() will cause skb->data to be misaligned
2316 * to a cache line boundary. If this is the case, include
2317 * some extra space to allow re-aligning the data area.
2318 */
2319 mp->skb_size += SKB_DMA_REALIGN;
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002320}
2321
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002322static int mv643xx_eth_open(struct net_device *dev)
2323{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002324 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002325 int err;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002326 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002327
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002328 wrlp(mp, INT_CAUSE, 0);
2329 wrlp(mp, INT_CAUSE_EXT, 0);
2330 rdlp(mp, INT_CAUSE_EXT);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002331
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002332 err = request_irq(dev->irq, mv643xx_eth_irq,
Lennert Buytenhek2a1867a2008-08-23 23:43:38 +02002333 IRQF_SHARED, dev->name, dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002334 if (err) {
Joe Perches7542db82011-03-02 17:50:35 +00002335 netdev_err(dev, "can't assign irq\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002336 return -EAGAIN;
2337 }
2338
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002339 mv643xx_eth_recalc_skb_size(mp);
2340
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002341 napi_enable(&mp->napi);
2342
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002343 skb_queue_head_init(&mp->rx_recycle);
2344
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002345 mp->int_mask = INT_EXT;
2346
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002347 for (i = 0; i < mp->rxq_count; i++) {
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002348 err = rxq_init(mp, i);
2349 if (err) {
2350 while (--i >= 0)
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002351 rxq_deinit(mp->rxq + i);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002352 goto out;
2353 }
2354
Lennert Buytenhek1fa38c52008-08-28 08:09:10 +02002355 rxq_refill(mp->rxq + i, INT_MAX);
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002356 mp->int_mask |= INT_RX_0 << i;
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002357 }
2358
Lennert Buytenhek1319eba2009-04-29 11:57:34 +00002359 if (mp->oom) {
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002360 mp->rx_oom.expires = jiffies + (HZ / 10);
2361 add_timer(&mp->rx_oom);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002362 }
Lennert Buytenhek8a578112008-06-01 18:09:35 +02002363
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002364 for (i = 0; i < mp->txq_count; i++) {
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002365 err = txq_init(mp, i);
2366 if (err) {
2367 while (--i >= 0)
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002368 txq_deinit(mp->txq + i);
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002369 goto out_free;
2370 }
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002371 mp->int_mask |= INT_TX_END_0 << i;
Lennert Buytenhek3d6b35b2008-06-02 01:28:22 +02002372 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002373
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002374 port_start(mp);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002375
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002376 wrlp(mp, INT_MASK_EXT, INT_EXT_LINK_PHY | INT_EXT_TX);
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002377 wrlp(mp, INT_MASK, mp->int_mask);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002378
2379 return 0;
2380
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002381
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002382out_free:
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002383 for (i = 0; i < mp->rxq_count; i++)
2384 rxq_deinit(mp->rxq + i);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002385out:
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002386 free_irq(dev->irq, dev);
2387
2388 return err;
2389}
2390
Lennert Buytenheke5371492008-06-01 02:18:13 +02002391static void port_reset(struct mv643xx_eth_private *mp)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002392{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002393 unsigned int data;
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002394 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002395
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002396 for (i = 0; i < mp->rxq_count; i++)
2397 rxq_disable(mp->rxq + i);
2398 for (i = 0; i < mp->txq_count; i++)
2399 txq_disable(mp->txq + i);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002400
2401 while (1) {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002402 u32 ps = rdlp(mp, PORT_STATUS);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002403
2404 if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY)
2405 break;
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002406 udelay(10);
Lennert Buytenhekae9ae062008-07-15 02:15:24 +02002407 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002408
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002409 /* Reset the Enable bit in the Configuration Register */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002410 data = rdlp(mp, PORT_SERIAL_CONTROL);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002411 data &= ~(SERIAL_PORT_ENABLE |
2412 DO_NOT_FORCE_LINK_FAIL |
2413 FORCE_LINK_PASS);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002414 wrlp(mp, PORT_SERIAL_CONTROL, data);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002415}
2416
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002417static int mv643xx_eth_stop(struct net_device *dev)
2418{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002419 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhek64da80a2008-06-02 01:01:26 +02002420 int i;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002421
Gabriel Paubertfe65e702009-01-19 17:18:09 -08002422 wrlp(mp, INT_MASK_EXT, 0x00000000);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002423 wrlp(mp, INT_MASK, 0x00000000);
2424 rdlp(mp, INT_MASK);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002425
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002426 napi_disable(&mp->napi);
Lennert Buytenhek78fff832008-08-24 01:03:57 +02002427
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002428 del_timer_sync(&mp->rx_oom);
2429
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002430 netif_carrier_off(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002431
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002432 free_irq(dev->irq, dev);
2433
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +02002434 port_reset(mp);
Lennert Buytenhek8fd89212008-08-28 08:26:28 +02002435 mv643xx_eth_get_stats(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002436 mib_counters_update(mp);
Sebastian Siewior57e8f262009-02-16 11:28:15 +00002437 del_timer_sync(&mp->mib_counters_timer);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002438
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002439 skb_queue_purge(&mp->rx_recycle);
2440
Lennert Buytenhekf7981c12008-08-26 10:23:22 +02002441 for (i = 0; i < mp->rxq_count; i++)
2442 rxq_deinit(mp->rxq + i);
2443 for (i = 0; i < mp->txq_count; i++)
2444 txq_deinit(mp->txq + i);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002445
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002446 return 0;
2447}
2448
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002449static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002450{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002451 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002452
Lennert Buytenheked944932008-08-26 13:34:19 +02002453 if (mp->phy != NULL)
Richard Cochran28b04112010-07-17 08:48:55 +00002454 return phy_mii_ioctl(mp->phy, ifr, cmd);
Lennert Buytenhekbedfe322008-06-02 02:13:03 +02002455
2456 return -EOPNOTSUPP;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002457}
2458
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002459static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
2460{
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002461 struct mv643xx_eth_private *mp = netdev_priv(dev);
2462
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002463 if (new_mtu < 64 || new_mtu > 9500)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002464 return -EINVAL;
2465
2466 dev->mtu = new_mtu;
Lennert Buytenhek2bcb4b02008-10-01 02:33:57 -07002467 mv643xx_eth_recalc_skb_size(mp);
Lennert Buytenhek89df5fd2008-06-02 00:51:05 +02002468 tx_set_rate(mp, 1000000000, 16777216);
2469
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002470 if (!netif_running(dev))
2471 return 0;
2472
2473 /*
2474 * Stop and then re-open the interface. This will allocate RX
2475 * skbs of the new MTU.
2476 * There is a possible danger that the open will not succeed,
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002477 * due to memory being full.
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002478 */
2479 mv643xx_eth_stop(dev);
2480 if (mv643xx_eth_open(dev)) {
Joe Perches7542db82011-03-02 17:50:35 +00002481 netdev_err(dev,
2482 "fatal error on re-opening device after MTU change\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002483 }
2484
2485 return 0;
2486}
2487
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002488static void tx_timeout_task(struct work_struct *ugly)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002489{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002490 struct mv643xx_eth_private *mp;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002491
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002492 mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
2493 if (netif_running(mp->dev)) {
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002494 netif_tx_stop_all_queues(mp->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002495 port_reset(mp);
2496 port_start(mp);
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002497 netif_tx_wake_all_queues(mp->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002498 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002499}
2500
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002501static void mv643xx_eth_tx_timeout(struct net_device *dev)
2502{
Lennert Buytenheke5371492008-06-01 02:18:13 +02002503 struct mv643xx_eth_private *mp = netdev_priv(dev);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002504
Joe Perches7542db82011-03-02 17:50:35 +00002505 netdev_info(dev, "tx timeout\n");
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002506
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002507 schedule_work(&mp->tx_timeout_task);
2508}
2509
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002510#ifdef CONFIG_NET_POLL_CONTROLLER
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002511static void mv643xx_eth_netpoll(struct net_device *dev)
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002512{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002513 struct mv643xx_eth_private *mp = netdev_priv(dev);
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002514
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002515 wrlp(mp, INT_MASK, 0x00000000);
2516 rdlp(mp, INT_MASK);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07002517
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002518 mv643xx_eth_irq(dev->irq, dev);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07002519
Saeed Bisharae0ca8412009-05-06 03:02:01 +00002520 wrlp(mp, INT_MASK, mp->int_mask);
Dale Farnsworth63c9e542005-09-02 13:49:10 -07002521}
2522#endif
2523
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002524
2525/* platform glue ************************************************************/
Lennert Buytenheke5371492008-06-01 02:18:13 +02002526static void
2527mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
2528 struct mbus_dram_target_info *dram)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002529{
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +02002530 void __iomem *base = msp->base;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002531 u32 win_enable;
2532 u32 win_protect;
2533 int i;
2534
2535 for (i = 0; i < 6; i++) {
2536 writel(0, base + WINDOW_BASE(i));
2537 writel(0, base + WINDOW_SIZE(i));
2538 if (i < 4)
2539 writel(0, base + WINDOW_REMAP_HIGH(i));
2540 }
2541
2542 win_enable = 0x3f;
2543 win_protect = 0;
2544
2545 for (i = 0; i < dram->num_cs; i++) {
2546 struct mbus_dram_window *cs = dram->cs + i;
2547
2548 writel((cs->base & 0xffff0000) |
2549 (cs->mbus_attr << 8) |
2550 dram->mbus_dram_target_id, base + WINDOW_BASE(i));
2551 writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
2552
2553 win_enable &= ~(1 << i);
2554 win_protect |= 3 << (2 * i);
2555 }
2556
2557 writel(win_enable, base + WINDOW_BAR_ENABLE);
2558 msp->win_protect = win_protect;
2559}
2560
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002561static void infer_hw_params(struct mv643xx_eth_shared_private *msp)
2562{
2563 /*
2564 * Check whether we have a 14-bit coal limit field in bits
2565 * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
2566 * SDMA config register.
2567 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002568 writel(0x02000000, msp->base + 0x0400 + SDMA_CONFIG);
2569 if (readl(msp->base + 0x0400 + SDMA_CONFIG) & 0x02000000)
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002570 msp->extended_rx_coal_limit = 1;
2571 else
2572 msp->extended_rx_coal_limit = 0;
Lennert Buytenhek1e881592008-06-02 01:57:36 +02002573
2574 /*
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002575 * Check whether the MAC supports TX rate control, and if
2576 * yes, whether its associated registers are in the old or
2577 * the new place.
Lennert Buytenhek1e881592008-06-02 01:57:36 +02002578 */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002579 writel(1, msp->base + 0x0400 + TX_BW_MTU_MOVED);
2580 if (readl(msp->base + 0x0400 + TX_BW_MTU_MOVED) & 1) {
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002581 msp->tx_bw_control = TX_BW_CONTROL_NEW_LAYOUT;
2582 } else {
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002583 writel(7, msp->base + 0x0400 + TX_BW_RATE);
2584 if (readl(msp->base + 0x0400 + TX_BW_RATE) & 7)
Lennert Buytenhek457b1d52008-09-04 12:22:34 +02002585 msp->tx_bw_control = TX_BW_CONTROL_OLD_LAYOUT;
2586 else
2587 msp->tx_bw_control = TX_BW_CONTROL_ABSENT;
2588 }
Lennert Buytenhek773fc3e2008-06-02 01:54:16 +02002589}
2590
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002591static int mv643xx_eth_shared_probe(struct platform_device *pdev)
2592{
Lennert Buytenhek10a99482008-11-20 03:57:16 -08002593 static int mv643xx_eth_version_printed;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002594 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
Lennert Buytenheke5371492008-06-01 02:18:13 +02002595 struct mv643xx_eth_shared_private *msp;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002596 struct resource *res;
2597 int ret;
2598
Lennert Buytenheke5371492008-06-01 02:18:13 +02002599 if (!mv643xx_eth_version_printed++)
Joe Perches7542db82011-03-02 17:50:35 +00002600 pr_notice("MV-643xx 10/100/1000 ethernet driver version %s\n",
2601 mv643xx_eth_driver_version);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002602
2603 ret = -EINVAL;
2604 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2605 if (res == NULL)
2606 goto out;
2607
2608 ret = -ENOMEM;
Julia Lawallbeae22e2010-05-13 10:00:22 +00002609 msp = kzalloc(sizeof(*msp), GFP_KERNEL);
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002610 if (msp == NULL)
2611 goto out;
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002612
Lennert Buytenhekcc9754b32008-06-01 02:10:27 +02002613 msp->base = ioremap(res->start, res->end - res->start + 1);
2614 if (msp->base == NULL)
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002615 goto out_free;
2616
Lennert Buytenheked944932008-08-26 13:34:19 +02002617 /*
2618 * Set up and register SMI bus.
2619 */
2620 if (pd == NULL || pd->shared_smi == NULL) {
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07002621 msp->smi_bus = mdiobus_alloc();
2622 if (msp->smi_bus == NULL)
Lennert Buytenheked944932008-08-26 13:34:19 +02002623 goto out_unmap;
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07002624
2625 msp->smi_bus->priv = msp;
2626 msp->smi_bus->name = "mv643xx_eth smi";
2627 msp->smi_bus->read = smi_bus_read;
2628 msp->smi_bus->write = smi_bus_write,
2629 snprintf(msp->smi_bus->id, MII_BUS_ID_SIZE, "%d", pdev->id);
2630 msp->smi_bus->parent = &pdev->dev;
2631 msp->smi_bus->phy_mask = 0xffffffff;
2632 if (mdiobus_register(msp->smi_bus) < 0)
2633 goto out_free_mii_bus;
Lennert Buytenheked944932008-08-26 13:34:19 +02002634 msp->smi = msp;
2635 } else {
Lennert Buytenhekfc0eb9f2008-08-26 12:56:56 +02002636 msp->smi = platform_get_drvdata(pd->shared_smi);
Lennert Buytenheked944932008-08-26 13:34:19 +02002637 }
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002638
Lennert Buytenhek45c5d3b2008-08-26 04:42:59 +02002639 msp->err_interrupt = NO_IRQ;
2640 init_waitqueue_head(&msp->smi_busy_wait);
2641
2642 /*
2643 * Check whether the error interrupt is hooked up.
2644 */
2645 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2646 if (res != NULL) {
2647 int err;
2648
2649 err = request_irq(res->start, mv643xx_eth_err_irq,
2650 IRQF_SHARED, "mv643xx_eth", msp);
2651 if (!err) {
2652 writel(ERR_INT_SMI_DONE, msp->base + ERR_INT_MASK);
2653 msp->err_interrupt = res->start;
2654 }
2655 }
2656
Lennert Buytenhekc9df406f2008-06-01 00:48:39 +02002657 /*
2658 * (Re-)program MBUS remapping windows if we are asked to.
2659 */
2660 if (pd != NULL && pd->dram != NULL)
2661 mv643xx_eth_conf_mbus_windows(msp, pd->dram);
2662
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002663 /*
2664 * Detect hardware parameters.
2665 */
2666 msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
Dan Carpenter50a749c2010-07-23 01:05:05 +00002667 msp->tx_csum_limit = (pd != NULL && pd->tx_csum_limit) ?
2668 pd->tx_csum_limit : 9 * 1024;
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 Buytenhek298cf9be2008-10-08 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 Buytenhek298cf9be2008-10-08 16:29:57 -07002690 if (pd == NULL || pd->shared_smi == NULL) {
Lennert Buytenhek298cf9be2008-10-08 16:29:57 -07002691 mdiobus_unregister(msp->smi_bus);
Lennert Buytenhekbcb33362008-11-18 04:28:35 +00002692 mdiobus_free(msp->smi_bus);
Lennert Buytenhek298cf9be2008-10-08 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 Buytenhekcc9754b32008-06-01 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 Buytenhek298cf9be2008-10-08 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) {
Joe Perches7542db82011-03-02 17:50:35 +00002868 dev_err(&pdev->dev, "no mv643xx_eth_platform_data\n");
Dale Farnsworth84dd6192007-03-03 06:40:28 -07002869 return -ENODEV;
2870 }
2871
Lennert Buytenhekfa3959f2008-04-24 01:27:02 +02002872 if (pd->shared == NULL) {
Joe Perches7542db82011-03-02 17:50:35 +00002873 dev_err(&pdev->dev, "no mv643xx_eth_platform_data->shared\n");
Lennert Buytenhekfa3959f2008-04-24 01:27:02 +02002874 return -ENODEV;
2875 }
2876
Lennert Buytenheke5ef1de2008-08-28 06:26:23 +02002877 dev = alloc_etherdev_mq(sizeof(struct mv643xx_eth_private), 8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002878 if (!dev)
2879 return -ENOMEM;
2880
Linus Torvalds1da177e2005-04-16 15:20:36 -07002881 mp = netdev_priv(dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002882 platform_set_drvdata(pdev, mp);
2883
2884 mp->shared = platform_get_drvdata(pd->shared);
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002885 mp->base = mp->shared->base + 0x0400 + (pd->port_number << 10);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002886 mp->port_num = pd->port_number;
2887
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002888 mp->dev = dev;
Lennert Buytenhek78fff832008-08-24 01:03:57 +02002889
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002890 set_params(mp, pd);
Ben Hutchings206d6b32010-09-27 08:30:05 +00002891 netif_set_real_num_tx_queues(dev, mp->txq_count);
2892 netif_set_real_num_rx_queues(dev, mp->rxq_count);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002893
Lennert Buytenheked944932008-08-26 13:34:19 +02002894 if (pd->phy_addr != MV643XX_ETH_PHY_NONE)
2895 mp->phy = phy_scan(mp, pd->phy_addr);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002896
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00002897 if (mp->phy != NULL)
Lennert Buytenheked944932008-08-26 13:34:19 +02002898 phy_init(mp, pd->speed, pd->duplex);
Lennert Buytenhek6bdf5762009-02-12 14:06:46 +00002899
2900 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
Lennert Buytenheked944932008-08-26 13:34:19 +02002901
Lennert Buytenhek81600eea92008-07-14 14:29:40 +02002902 init_pscr(mp, pd->speed, pd->duplex);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002903
Lennert Buytenhek4ff34952008-09-19 05:04:57 +02002904
2905 mib_counters_clear(mp);
2906
2907 init_timer(&mp->mib_counters_timer);
2908 mp->mib_counters_timer.data = (unsigned long)mp;
2909 mp->mib_counters_timer.function = mib_counters_timer_wrapper;
2910 mp->mib_counters_timer.expires = jiffies + 30 * HZ;
2911 add_timer(&mp->mib_counters_timer);
2912
2913 spin_lock_init(&mp->mib_counters_lock);
2914
2915 INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
2916
Lennert Buytenhek2257e052008-08-24 04:33:36 +02002917 netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 128);
2918
2919 init_timer(&mp->rx_oom);
2920 mp->rx_oom.data = (unsigned long)mp;
2921 mp->rx_oom.function = oom_timer_wrapper;
2922
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002923
Linus Torvalds1da177e2005-04-16 15:20:36 -07002924 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2925 BUG_ON(!res);
2926 dev->irq = res->start;
2927
Lennert Buytenhekea8a8642009-02-24 15:41:40 +00002928 dev->netdev_ops = &mv643xx_eth_netdev_ops;
2929
Linus Torvalds1da177e2005-04-16 15:20:36 -07002930 dev->watchdog_timeo = 2 * HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002931 dev->base_addr = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002932
Wolfram Joost63890572006-01-16 16:57:41 -07002933 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
Lennert Buytenheke32b6612008-07-24 06:22:59 +02002934 dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM;
James Chapmanc28a4f82006-01-27 01:13:15 -07002935
Olaf Heringb0b8dab2006-04-27 18:23:49 -07002936 SET_NETDEV_DEV(dev, &pdev->dev);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002937
2938 if (mp->shared->win_protect)
2939 wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
2940
Lennert Buytenheka5fe3612009-02-24 15:41:47 +00002941 netif_carrier_off(dev);
2942
Lennert Buytenhekb5e86db2009-04-08 15:42:46 -07002943 wrlp(mp, SDMA_CONFIG, PORT_SDMA_CONFIG_DEFAULT_VALUE);
2944
Lennert Buytenhek4fb0a542009-02-24 15:42:05 +00002945 set_rx_coal(mp, 250);
Lennert Buytenheka5fe3612009-02-24 15:41:47 +00002946 set_tx_coal(mp, 0);
2947
Linus Torvalds1da177e2005-04-16 15:20:36 -07002948 err = register_netdev(dev);
2949 if (err)
2950 goto out;
2951
Joe Perches7542db82011-03-02 17:50:35 +00002952 netdev_notice(dev, "port %d with MAC address %pM\n",
2953 mp->port_num, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002954
Lennert Buytenhek13d64282008-06-01 20:51:22 +02002955 if (mp->tx_desc_sram_size > 0)
Joe Perches7542db82011-03-02 17:50:35 +00002956 netdev_notice(dev, "configured with sram\n");
Nicolas DETb1529872005-10-28 17:46:30 -07002957
Linus Torvalds1da177e2005-04-16 15:20:36 -07002958 return 0;
2959
2960out:
2961 free_netdev(dev);
2962
2963 return err;
2964}
2965
Russell King3ae5eae2005-11-09 22:32:44 +00002966static int mv643xx_eth_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002967{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002968 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002969
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002970 unregister_netdev(mp->dev);
Lennert Buytenheked944932008-08-26 13:34:19 +02002971 if (mp->phy != NULL)
2972 phy_detach(mp->phy);
Tejun Heo23f333a2010-12-12 16:45:14 +01002973 cancel_work_sync(&mp->tx_timeout_task);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002974 free_netdev(mp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002975
Russell King3ae5eae2005-11-09 22:32:44 +00002976 platform_set_drvdata(pdev, NULL);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002977
Linus Torvalds1da177e2005-04-16 15:20:36 -07002978 return 0;
2979}
2980
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002981static void mv643xx_eth_shutdown(struct platform_device *pdev)
2982{
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002983 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002984
2985 /* Mask all interrupts on ethernet port */
Lennert Buytenhek37a60842008-11-20 03:57:36 -08002986 wrlp(mp, INT_MASK, 0);
2987 rdlp(mp, INT_MASK);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002988
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002989 if (netif_running(mp->dev))
2990 port_reset(mp);
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07002991}
2992
Russell King3ae5eae2005-11-09 22:32:44 +00002993static struct platform_driver mv643xx_eth_driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002994 .probe = mv643xx_eth_probe,
2995 .remove = mv643xx_eth_remove,
2996 .shutdown = mv643xx_eth_shutdown,
Russell King3ae5eae2005-11-09 22:32:44 +00002997 .driver = {
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02002998 .name = MV643XX_ETH_NAME,
Kay Sievers72abb462008-04-18 13:50:44 -07002999 .owner = THIS_MODULE,
Russell King3ae5eae2005-11-09 22:32:44 +00003000 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07003001};
3002
Lennert Buytenheke5371492008-06-01 02:18:13 +02003003static int __init mv643xx_eth_init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003004{
3005 int rc;
3006
Russell King3ae5eae2005-11-09 22:32:44 +00003007 rc = platform_driver_register(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003008 if (!rc) {
Russell King3ae5eae2005-11-09 22:32:44 +00003009 rc = platform_driver_register(&mv643xx_eth_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003010 if (rc)
Russell King3ae5eae2005-11-09 22:32:44 +00003011 platform_driver_unregister(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003012 }
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02003013
Linus Torvalds1da177e2005-04-16 15:20:36 -07003014 return rc;
3015}
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02003016module_init(mv643xx_eth_init_module);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003017
Lennert Buytenheke5371492008-06-01 02:18:13 +02003018static void __exit mv643xx_eth_cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003019{
Russell King3ae5eae2005-11-09 22:32:44 +00003020 platform_driver_unregister(&mv643xx_eth_driver);
3021 platform_driver_unregister(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003022}
Lennert Buytenheke5371492008-06-01 02:18:13 +02003023module_exit(mv643xx_eth_cleanup_module);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003024
Lennert Buytenhek45675bc2008-06-02 02:02:30 +02003025MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
3026 "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003027MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02003028MODULE_LICENSE("GPL");
Kay Sievers72abb462008-04-18 13:50:44 -07003029MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
Lennert Buytenhekfc32b0e2008-06-02 00:28:40 +02003030MODULE_ALIAS("platform:" MV643XX_ETH_NAME);