Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Lennert Buytenhek | 9c1bbdf | 2007-10-19 04:11:03 +0200 | [diff] [blame] | 2 | * Driver for Marvell Discovery (MV643XX) and Marvell Orion ethernet ports |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com> |
| 4 | * |
| 5 | * Based on the 64360 driver from: |
Lennert Buytenhek | 4547fa6 | 2008-03-18 11:40:14 -0700 | [diff] [blame] | 6 | * Copyright (C) 2002 Rabeeh Khoury <rabeeh@galileo.co.il> |
| 7 | * Rabeeh Khoury <rabeeh@marvell.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * |
| 9 | * Copyright (C) 2003 PMC-Sierra, Inc., |
Olaf Hering | 3bb8a18 | 2006-01-05 22:45:45 -0800 | [diff] [blame] | 10 | * written by Manish Lachwani |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
| 12 | * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org> |
| 13 | * |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 14 | * Copyright (C) 2004-2006 MontaVista Software, Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | * Dale Farnsworth <dale@farnsworth.org> |
| 16 | * |
| 17 | * Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com> |
| 18 | * <sjhill@realitydiluted.com> |
| 19 | * |
Lennert Buytenhek | 4547fa6 | 2008-03-18 11:40:14 -0700 | [diff] [blame] | 20 | * Copyright (C) 2007-2008 Marvell Semiconductor |
| 21 | * Lennert Buytenhek <buytenh@marvell.com> |
| 22 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | * This program is free software; you can redistribute it and/or |
| 24 | * modify it under the terms of the GNU General Public License |
| 25 | * as published by the Free Software Foundation; either version 2 |
| 26 | * of the License, or (at your option) any later version. |
| 27 | * |
| 28 | * This program is distributed in the hope that it will be useful, |
| 29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 31 | * GNU General Public License for more details. |
| 32 | * |
| 33 | * You should have received a copy of the GNU General Public License |
| 34 | * along with this program; if not, write to the Free Software |
| 35 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 36 | */ |
Lennert Buytenhek | a779d38 | 2008-06-01 00:54:05 +0200 | [diff] [blame] | 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/init.h> |
| 39 | #include <linux/dma-mapping.h> |
Al Viro | b6298c2 | 2006-01-18 19:35:54 -0500 | [diff] [blame] | 40 | #include <linux/in.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/tcp.h> |
| 42 | #include <linux/udp.h> |
| 43 | #include <linux/etherdevice.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/delay.h> |
| 45 | #include <linux/ethtool.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 46 | #include <linux/platform_device.h> |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 47 | #include <linux/module.h> |
| 48 | #include <linux/kernel.h> |
| 49 | #include <linux/spinlock.h> |
| 50 | #include <linux/workqueue.h> |
| 51 | #include <linux/mii.h> |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 52 | #include <linux/mv643xx_eth.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <asm/io.h> |
| 54 | #include <asm/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <asm/system.h> |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 56 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 57 | static char mv643xx_eth_driver_name[] = "mv643xx_eth"; |
| 58 | static char mv643xx_eth_driver_version[] = "1.0"; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 59 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 60 | #define MV643XX_ETH_CHECKSUM_OFFLOAD_TX |
| 61 | #define MV643XX_ETH_NAPI |
| 62 | #define MV643XX_ETH_TX_FAST_REFILL |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 63 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 64 | #ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 65 | #define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1) |
| 66 | #else |
| 67 | #define MAX_DESCS_PER_SKB 1 |
| 68 | #endif |
| 69 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 70 | /* |
| 71 | * Registers shared between all ports. |
| 72 | */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 73 | #define PHY_ADDR 0x0000 |
| 74 | #define SMI_REG 0x0004 |
| 75 | #define WINDOW_BASE(w) (0x0200 + ((w) << 3)) |
| 76 | #define WINDOW_SIZE(w) (0x0204 + ((w) << 3)) |
| 77 | #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2)) |
| 78 | #define WINDOW_BAR_ENABLE 0x0290 |
| 79 | #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4)) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 80 | |
| 81 | /* |
| 82 | * Per-port registers. |
| 83 | */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 84 | #define PORT_CONFIG(p) (0x0400 + ((p) << 10)) |
Lennert Buytenhek | d9a073e | 2008-06-01 01:22:06 +0200 | [diff] [blame] | 85 | #define UNICAST_PROMISCUOUS_MODE 0x00000001 |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 86 | #define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10)) |
| 87 | #define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10)) |
| 88 | #define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10)) |
| 89 | #define SDMA_CONFIG(p) (0x041c + ((p) << 10)) |
| 90 | #define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10)) |
| 91 | #define PORT_STATUS(p) (0x0444 + ((p) << 10)) |
Lennert Buytenhek | a2a4168 | 2008-06-01 01:30:42 +0200 | [diff] [blame] | 92 | #define TX_FIFO_EMPTY 0x00000400 |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 93 | #define TXQ_COMMAND(p) (0x0448 + ((p) << 10)) |
Lennert Buytenhek | 89df5fd | 2008-06-02 00:51:05 +0200 | [diff] [blame^] | 94 | #define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10)) |
| 95 | #define TX_BW_RATE(p) (0x0450 + ((p) << 10)) |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 96 | #define TX_BW_MTU(p) (0x0458 + ((p) << 10)) |
Lennert Buytenhek | 89df5fd | 2008-06-02 00:51:05 +0200 | [diff] [blame^] | 97 | #define TX_BW_BURST(p) (0x045c + ((p) << 10)) |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 98 | #define INT_CAUSE(p) (0x0460 + ((p) << 10)) |
Lennert Buytenhek | 073a345 | 2008-06-01 02:00:31 +0200 | [diff] [blame] | 99 | #define INT_RX 0x00000804 |
| 100 | #define INT_EXT 0x00000002 |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 101 | #define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10)) |
Lennert Buytenhek | 073a345 | 2008-06-01 02:00:31 +0200 | [diff] [blame] | 102 | #define INT_EXT_LINK 0x00100000 |
| 103 | #define INT_EXT_PHY 0x00010000 |
| 104 | #define INT_EXT_TX_ERROR_0 0x00000100 |
| 105 | #define INT_EXT_TX_0 0x00000001 |
| 106 | #define INT_EXT_TX 0x00000101 |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 107 | #define INT_MASK(p) (0x0468 + ((p) << 10)) |
| 108 | #define INT_MASK_EXT(p) (0x046c + ((p) << 10)) |
| 109 | #define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10)) |
| 110 | #define RXQ_CURRENT_DESC_PTR(p) (0x060c + ((p) << 10)) |
| 111 | #define RXQ_COMMAND(p) (0x0680 + ((p) << 10)) |
| 112 | #define TXQ_CURRENT_DESC_PTR(p) (0x06c0 + ((p) << 10)) |
Lennert Buytenhek | 89df5fd | 2008-06-02 00:51:05 +0200 | [diff] [blame^] | 113 | #define TXQ_BW_TOKENS(p) (0x0700 + ((p) << 10)) |
| 114 | #define TXQ_BW_CONF(p) (0x0704 + ((p) << 10)) |
| 115 | #define TXQ_BW_WRR_CONF(p) (0x0708 + ((p) << 10)) |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 116 | #define MIB_COUNTERS(p) (0x1000 + ((p) << 7)) |
| 117 | #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10)) |
| 118 | #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10)) |
| 119 | #define UNICAST_TABLE(p) (0x1600 + ((p) << 10)) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 120 | |
Lennert Buytenhek | 2679a55 | 2008-06-01 01:18:58 +0200 | [diff] [blame] | 121 | |
| 122 | /* |
| 123 | * SDMA configuration register. |
| 124 | */ |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 125 | #define RX_BURST_SIZE_4_64BIT (2 << 1) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 126 | #define BLM_RX_NO_SWAP (1 << 4) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 127 | #define BLM_TX_NO_SWAP (1 << 5) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 128 | #define TX_BURST_SIZE_4_64BIT (2 << 22) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 129 | |
| 130 | #if defined(__BIG_ENDIAN) |
| 131 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ |
| 132 | RX_BURST_SIZE_4_64BIT | \ |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 133 | TX_BURST_SIZE_4_64BIT |
| 134 | #elif defined(__LITTLE_ENDIAN) |
| 135 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ |
| 136 | RX_BURST_SIZE_4_64BIT | \ |
| 137 | BLM_RX_NO_SWAP | \ |
| 138 | BLM_TX_NO_SWAP | \ |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 139 | TX_BURST_SIZE_4_64BIT |
| 140 | #else |
| 141 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined |
| 142 | #endif |
| 143 | |
Lennert Buytenhek | 2beff77 | 2008-06-01 01:22:37 +0200 | [diff] [blame] | 144 | |
| 145 | /* |
| 146 | * Port serial control register. |
| 147 | */ |
| 148 | #define SET_MII_SPEED_TO_100 (1 << 24) |
| 149 | #define SET_GMII_SPEED_TO_1000 (1 << 23) |
| 150 | #define SET_FULL_DUPLEX_MODE (1 << 21) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 151 | #define MAX_RX_PACKET_1522BYTE (1 << 17) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 152 | #define MAX_RX_PACKET_9700BYTE (5 << 17) |
| 153 | #define MAX_RX_PACKET_MASK (7 << 17) |
Lennert Buytenhek | 2beff77 | 2008-06-01 01:22:37 +0200 | [diff] [blame] | 154 | #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13) |
| 155 | #define DO_NOT_FORCE_LINK_FAIL (1 << 10) |
| 156 | #define SERIAL_PORT_CONTROL_RESERVED (1 << 9) |
| 157 | #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3) |
| 158 | #define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2) |
| 159 | #define FORCE_LINK_PASS (1 << 1) |
| 160 | #define SERIAL_PORT_ENABLE (1 << 0) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 161 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 162 | #define DEFAULT_RX_QUEUE_SIZE 400 |
| 163 | #define DEFAULT_TX_QUEUE_SIZE 800 |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 164 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 165 | |
Lennert Buytenhek | 7ca72a3 | 2008-06-01 01:41:29 +0200 | [diff] [blame] | 166 | /* |
| 167 | * RX/TX descriptors. |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 168 | */ |
| 169 | #if defined(__BIG_ENDIAN) |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 170 | struct rx_desc { |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 171 | u16 byte_cnt; /* Descriptor buffer byte count */ |
| 172 | u16 buf_size; /* Buffer size */ |
| 173 | u32 cmd_sts; /* Descriptor command status */ |
| 174 | u32 next_desc_ptr; /* Next descriptor pointer */ |
| 175 | u32 buf_ptr; /* Descriptor buffer pointer */ |
| 176 | }; |
| 177 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 178 | struct tx_desc { |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 179 | u16 byte_cnt; /* buffer byte count */ |
| 180 | u16 l4i_chk; /* CPU provided TCP checksum */ |
| 181 | u32 cmd_sts; /* Command/status field */ |
| 182 | u32 next_desc_ptr; /* Pointer to next descriptor */ |
| 183 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ |
| 184 | }; |
| 185 | #elif defined(__LITTLE_ENDIAN) |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 186 | struct rx_desc { |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 187 | u32 cmd_sts; /* Descriptor command status */ |
| 188 | u16 buf_size; /* Buffer size */ |
| 189 | u16 byte_cnt; /* Descriptor buffer byte count */ |
| 190 | u32 buf_ptr; /* Descriptor buffer pointer */ |
| 191 | u32 next_desc_ptr; /* Next descriptor pointer */ |
| 192 | }; |
| 193 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 194 | struct tx_desc { |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 195 | u32 cmd_sts; /* Command/status field */ |
| 196 | u16 l4i_chk; /* CPU provided TCP checksum */ |
| 197 | u16 byte_cnt; /* buffer byte count */ |
| 198 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ |
| 199 | u32 next_desc_ptr; /* Pointer to next descriptor */ |
| 200 | }; |
| 201 | #else |
| 202 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined |
| 203 | #endif |
| 204 | |
Lennert Buytenhek | 7ca72a3 | 2008-06-01 01:41:29 +0200 | [diff] [blame] | 205 | /* RX & TX descriptor command */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 206 | #define BUFFER_OWNED_BY_DMA 0x80000000 |
Lennert Buytenhek | 7ca72a3 | 2008-06-01 01:41:29 +0200 | [diff] [blame] | 207 | |
| 208 | /* RX & TX descriptor status */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 209 | #define ERROR_SUMMARY 0x00000001 |
Lennert Buytenhek | 7ca72a3 | 2008-06-01 01:41:29 +0200 | [diff] [blame] | 210 | |
| 211 | /* RX descriptor status */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 212 | #define LAYER_4_CHECKSUM_OK 0x40000000 |
| 213 | #define RX_ENABLE_INTERRUPT 0x20000000 |
| 214 | #define RX_FIRST_DESC 0x08000000 |
| 215 | #define RX_LAST_DESC 0x04000000 |
Lennert Buytenhek | 7ca72a3 | 2008-06-01 01:41:29 +0200 | [diff] [blame] | 216 | |
| 217 | /* TX descriptor command */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 218 | #define TX_ENABLE_INTERRUPT 0x00800000 |
| 219 | #define GEN_CRC 0x00400000 |
| 220 | #define TX_FIRST_DESC 0x00200000 |
| 221 | #define TX_LAST_DESC 0x00100000 |
| 222 | #define ZERO_PADDING 0x00080000 |
| 223 | #define GEN_IP_V4_CHECKSUM 0x00040000 |
| 224 | #define GEN_TCP_UDP_CHECKSUM 0x00020000 |
| 225 | #define UDP_FRAME 0x00010000 |
Lennert Buytenhek | 7ca72a3 | 2008-06-01 01:41:29 +0200 | [diff] [blame] | 226 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 227 | #define TX_IHL_SHIFT 11 |
Lennert Buytenhek | 7ca72a3 | 2008-06-01 01:41:29 +0200 | [diff] [blame] | 228 | |
| 229 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 230 | /* global *******************************************************************/ |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 231 | struct mv643xx_eth_shared_private { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 232 | /* |
| 233 | * Ethernet controller base address. |
| 234 | */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 235 | void __iomem *base; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 236 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 237 | /* |
| 238 | * Protects access to SMI_REG, which is shared between ports. |
| 239 | */ |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 240 | spinlock_t phy_lock; |
| 241 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 242 | /* |
| 243 | * Per-port MBUS window access register value. |
| 244 | */ |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 245 | u32 win_protect; |
| 246 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 247 | /* |
| 248 | * Hardware-specific parameters. |
| 249 | */ |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 250 | unsigned int t_clk; |
| 251 | }; |
| 252 | |
| 253 | |
| 254 | /* per-port *****************************************************************/ |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 255 | struct mib_counters { |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 256 | u64 good_octets_received; |
| 257 | u32 bad_octets_received; |
| 258 | u32 internal_mac_transmit_err; |
| 259 | u32 good_frames_received; |
| 260 | u32 bad_frames_received; |
| 261 | u32 broadcast_frames_received; |
| 262 | u32 multicast_frames_received; |
| 263 | u32 frames_64_octets; |
| 264 | u32 frames_65_to_127_octets; |
| 265 | u32 frames_128_to_255_octets; |
| 266 | u32 frames_256_to_511_octets; |
| 267 | u32 frames_512_to_1023_octets; |
| 268 | u32 frames_1024_to_max_octets; |
| 269 | u64 good_octets_sent; |
| 270 | u32 good_frames_sent; |
| 271 | u32 excessive_collision; |
| 272 | u32 multicast_frames_sent; |
| 273 | u32 broadcast_frames_sent; |
| 274 | u32 unrec_mac_control_received; |
| 275 | u32 fc_sent; |
| 276 | u32 good_fc_received; |
| 277 | u32 bad_fc_received; |
| 278 | u32 undersize_received; |
| 279 | u32 fragments_received; |
| 280 | u32 oversize_received; |
| 281 | u32 jabber_received; |
| 282 | u32 mac_receive_error; |
| 283 | u32 bad_crc_event; |
| 284 | u32 collision; |
| 285 | u32 late_collision; |
| 286 | }; |
| 287 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 288 | struct rx_queue { |
| 289 | int rx_ring_size; |
| 290 | |
| 291 | int rx_desc_count; |
| 292 | int rx_curr_desc; |
| 293 | int rx_used_desc; |
| 294 | |
| 295 | struct rx_desc *rx_desc_area; |
| 296 | dma_addr_t rx_desc_dma; |
| 297 | int rx_desc_area_size; |
| 298 | struct sk_buff **rx_skb; |
| 299 | |
| 300 | struct timer_list rx_oom; |
| 301 | }; |
| 302 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 303 | struct tx_queue { |
| 304 | int tx_ring_size; |
| 305 | |
| 306 | int tx_desc_count; |
| 307 | int tx_curr_desc; |
| 308 | int tx_used_desc; |
| 309 | |
| 310 | struct tx_desc *tx_desc_area; |
| 311 | dma_addr_t tx_desc_dma; |
| 312 | int tx_desc_area_size; |
| 313 | struct sk_buff **tx_skb; |
| 314 | }; |
| 315 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 316 | struct mv643xx_eth_private { |
| 317 | struct mv643xx_eth_shared_private *shared; |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 318 | int port_num; |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 319 | |
| 320 | struct net_device *dev; |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 321 | |
| 322 | struct mv643xx_eth_shared_private *shared_smi; |
| 323 | int phy_addr; |
| 324 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 325 | spinlock_t lock; |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 326 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 327 | struct mib_counters mib_counters; |
| 328 | struct work_struct tx_timeout_task; |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 329 | struct mii_if_info mii; |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 330 | |
| 331 | /* |
| 332 | * RX state. |
| 333 | */ |
| 334 | int default_rx_ring_size; |
| 335 | unsigned long rx_desc_sram_addr; |
| 336 | int rx_desc_sram_size; |
| 337 | struct napi_struct napi; |
| 338 | struct rx_queue rxq[1]; |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 339 | |
| 340 | /* |
| 341 | * TX state. |
| 342 | */ |
| 343 | int default_tx_ring_size; |
| 344 | unsigned long tx_desc_sram_addr; |
| 345 | int tx_desc_sram_size; |
| 346 | struct tx_queue txq[1]; |
| 347 | #ifdef MV643XX_ETH_TX_FAST_REFILL |
| 348 | int tx_clean_threshold; |
| 349 | #endif |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 350 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 352 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 353 | /* port register accessors **************************************************/ |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 354 | static inline u32 rdl(struct mv643xx_eth_private *mp, int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | { |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 356 | return readl(mp->shared->base + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | } |
| 358 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 359 | static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | { |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 361 | writel(data, mp->shared->base + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | } |
| 363 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 364 | |
| 365 | /* rxq/txq helper functions *************************************************/ |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 366 | static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | { |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 368 | return container_of(rxq, struct mv643xx_eth_private, rxq[0]); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 369 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 371 | static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq) |
| 372 | { |
| 373 | return container_of(txq, struct mv643xx_eth_private, txq[0]); |
| 374 | } |
| 375 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 376 | static void rxq_enable(struct rx_queue *rxq) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 377 | { |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 378 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
| 379 | wrl(mp, RXQ_COMMAND(mp->port_num), 1); |
| 380 | } |
Lennert Buytenhek | c0d0f2c | 2008-03-18 11:34:34 -0700 | [diff] [blame] | 381 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 382 | static void rxq_disable(struct rx_queue *rxq) |
| 383 | { |
| 384 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
| 385 | u8 mask = 1; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 386 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 387 | wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8); |
| 388 | while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask) |
| 389 | udelay(10); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 390 | } |
| 391 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 392 | static void txq_enable(struct tx_queue *txq) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 393 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 394 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
| 395 | wrl(mp, TXQ_COMMAND(mp->port_num), 1); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 396 | } |
| 397 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 398 | static void txq_disable(struct tx_queue *txq) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 399 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 400 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
| 401 | u8 mask = 1; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 402 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 403 | wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8); |
| 404 | while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask) |
| 405 | udelay(10); |
| 406 | } |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 407 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 408 | static void __txq_maybe_wake(struct tx_queue *txq) |
| 409 | { |
| 410 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 411 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 412 | if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB) |
| 413 | netif_wake_queue(mp->dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | |
| 417 | /* rx ***********************************************************************/ |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 418 | static void txq_reclaim(struct tx_queue *txq, int force); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 419 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 420 | static void rxq_refill(struct rx_queue *rxq) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 421 | { |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 422 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 423 | unsigned long flags; |
| 424 | |
| 425 | spin_lock_irqsave(&mp->lock, flags); |
| 426 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 427 | while (rxq->rx_desc_count < rxq->rx_ring_size) { |
| 428 | int skb_size; |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 429 | struct sk_buff *skb; |
| 430 | int unaligned; |
| 431 | int rx; |
| 432 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 433 | /* |
| 434 | * Reserve 2+14 bytes for an ethernet header (the |
| 435 | * hardware automatically prepends 2 bytes of dummy |
| 436 | * data to each received packet), 4 bytes for a VLAN |
| 437 | * header, and 4 bytes for the trailing FCS -- 24 |
| 438 | * bytes total. |
| 439 | */ |
| 440 | skb_size = mp->dev->mtu + 24; |
| 441 | |
| 442 | skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1); |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 443 | if (skb == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | break; |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 445 | |
Ralf Baechle | 908b637 | 2007-02-26 19:52:06 +0000 | [diff] [blame] | 446 | unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); |
Dale Farnsworth | b44cd57 | 2006-01-16 16:51:22 -0700 | [diff] [blame] | 447 | if (unaligned) |
Ralf Baechle | 908b637 | 2007-02-26 19:52:06 +0000 | [diff] [blame] | 448 | skb_reserve(skb, dma_get_cache_alignment() - unaligned); |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 449 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 450 | rxq->rx_desc_count++; |
| 451 | rx = rxq->rx_used_desc; |
| 452 | rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size; |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 453 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 454 | rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data, |
| 455 | skb_size, DMA_FROM_DEVICE); |
| 456 | rxq->rx_desc_area[rx].buf_size = skb_size; |
| 457 | rxq->rx_skb[rx] = skb; |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 458 | wmb(); |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 459 | rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA | |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 460 | RX_ENABLE_INTERRUPT; |
| 461 | wmb(); |
| 462 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 463 | /* |
| 464 | * The hardware automatically prepends 2 bytes of |
| 465 | * dummy data to each received packet, so that the |
| 466 | * IP header ends up 16-byte aligned. |
| 467 | */ |
| 468 | skb_reserve(skb, 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | } |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 470 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 471 | if (rxq->rx_desc_count == 0) { |
| 472 | rxq->rx_oom.expires = jiffies + (HZ / 10); |
| 473 | add_timer(&rxq->rx_oom); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | } |
Lennert Buytenhek | de34f22 | 2008-06-01 10:07:49 +0200 | [diff] [blame] | 475 | |
| 476 | spin_unlock_irqrestore(&mp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | } |
| 478 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 479 | static inline void rxq_refill_timer_wrapper(unsigned long data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | { |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 481 | rxq_refill((struct rx_queue *)data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | } |
| 483 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 484 | static int rxq_process(struct rx_queue *rxq, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | { |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 486 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
| 487 | struct net_device_stats *stats = &mp->dev->stats; |
| 488 | int rx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 490 | rx = 0; |
| 491 | while (rx < budget) { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 492 | struct rx_desc *rx_desc; |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 493 | unsigned int cmd_sts; |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 494 | struct sk_buff *skb; |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 495 | unsigned long flags; |
| 496 | |
| 497 | spin_lock_irqsave(&mp->lock, flags); |
| 498 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 499 | rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc]; |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 500 | |
| 501 | cmd_sts = rx_desc->cmd_sts; |
| 502 | if (cmd_sts & BUFFER_OWNED_BY_DMA) { |
| 503 | spin_unlock_irqrestore(&mp->lock, flags); |
| 504 | break; |
| 505 | } |
| 506 | rmb(); |
| 507 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 508 | skb = rxq->rx_skb[rxq->rx_curr_desc]; |
| 509 | rxq->rx_skb[rxq->rx_curr_desc] = NULL; |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 510 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 511 | rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size; |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 512 | |
| 513 | spin_unlock_irqrestore(&mp->lock, flags); |
| 514 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 515 | dma_unmap_single(NULL, rx_desc->buf_ptr + 2, |
| 516 | mp->dev->mtu + 24, DMA_FROM_DEVICE); |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 517 | rxq->rx_desc_count--; |
| 518 | rx++; |
Dale Farnsworth | b1dd9ca | 2005-09-01 09:59:23 -0700 | [diff] [blame] | 519 | |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 520 | /* |
| 521 | * Update statistics. |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 522 | * |
| 523 | * Note that the descriptor byte count includes 2 dummy |
| 524 | * bytes automatically inserted by the hardware at the |
| 525 | * start of the packet (which we don't count), and a 4 |
| 526 | * byte CRC at the end of the packet (which we do count). |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 527 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | stats->rx_packets++; |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 529 | stats->rx_bytes += rx_desc->byte_cnt - 2; |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 530 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | /* |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 532 | * In case we received a packet without first / last bits |
| 533 | * on, or the error summary bit is set, the packet needs |
| 534 | * to be dropped. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | */ |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 536 | if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 537 | (RX_FIRST_DESC | RX_LAST_DESC)) |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 538 | || (cmd_sts & ERROR_SUMMARY)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | stats->rx_dropped++; |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 540 | |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 541 | if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 542 | (RX_FIRST_DESC | RX_LAST_DESC)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | if (net_ratelimit()) |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 544 | dev_printk(KERN_ERR, &mp->dev->dev, |
| 545 | "received packet spanning " |
| 546 | "multiple descriptors\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | } |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 548 | |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 549 | if (cmd_sts & ERROR_SUMMARY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | stats->rx_errors++; |
| 551 | |
| 552 | dev_kfree_skb_irq(skb); |
| 553 | } else { |
| 554 | /* |
| 555 | * The -4 is for the CRC in the trailer of the |
| 556 | * received packet |
| 557 | */ |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 558 | skb_put(skb, rx_desc->byte_cnt - 2 - 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 560 | if (cmd_sts & LAYER_4_CHECKSUM_OK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 562 | skb->csum = htons( |
Lennert Buytenhek | 9658766 | 2008-06-01 10:31:56 +0200 | [diff] [blame] | 563 | (cmd_sts & 0x0007fff8) >> 3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | } |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 565 | skb->protocol = eth_type_trans(skb, mp->dev); |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 566 | #ifdef MV643XX_ETH_NAPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | netif_receive_skb(skb); |
| 568 | #else |
| 569 | netif_rx(skb); |
| 570 | #endif |
| 571 | } |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 572 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 573 | mp->dev->last_rx = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | } |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 575 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 576 | rxq_refill(rxq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 578 | return rx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | } |
| 580 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 581 | #ifdef MV643XX_ETH_NAPI |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 582 | static int mv643xx_eth_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | { |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 584 | struct mv643xx_eth_private *mp; |
| 585 | int rx; |
| 586 | |
| 587 | mp = container_of(napi, struct mv643xx_eth_private, napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 589 | #ifdef MV643XX_ETH_TX_FAST_REFILL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | if (++mp->tx_clean_threshold > 5) { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 591 | txq_reclaim(mp->txq, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | mp->tx_clean_threshold = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | } |
| 594 | #endif |
| 595 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 596 | rx = rxq_process(mp->rxq, budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 598 | if (rx < budget) { |
| 599 | netif_rx_complete(mp->dev, napi); |
| 600 | wrl(mp, INT_CAUSE(mp->port_num), 0); |
| 601 | wrl(mp, INT_CAUSE_EXT(mp->port_num), 0); |
| 602 | wrl(mp, INT_MASK(mp->port_num), INT_RX | INT_EXT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | } |
| 604 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 605 | return rx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | } |
| 607 | #endif |
| 608 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 609 | |
| 610 | /* tx ***********************************************************************/ |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 611 | static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) |
| 612 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 613 | int frag; |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 614 | |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 615 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 616 | skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag]; |
| 617 | if (fragp->size <= 8 && fragp->page_offset & 7) |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 618 | return 1; |
| 619 | } |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 620 | |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 621 | return 0; |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 622 | } |
| 623 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 624 | static int txq_alloc_desc_index(struct tx_queue *txq) |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 625 | { |
| 626 | int tx_desc_curr; |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 627 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 628 | BUG_ON(txq->tx_desc_count >= txq->tx_ring_size); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 629 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 630 | tx_desc_curr = txq->tx_curr_desc; |
| 631 | txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 632 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 633 | BUG_ON(txq->tx_curr_desc == txq->tx_used_desc); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 634 | |
| 635 | return tx_desc_curr; |
| 636 | } |
| 637 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 638 | static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 639 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 640 | int nr_frags = skb_shinfo(skb)->nr_frags; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 641 | int frag; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 642 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 643 | for (frag = 0; frag < nr_frags; frag++) { |
| 644 | skb_frag_t *this_frag; |
| 645 | int tx_index; |
| 646 | struct tx_desc *desc; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 647 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 648 | this_frag = &skb_shinfo(skb)->frags[frag]; |
| 649 | tx_index = txq_alloc_desc_index(txq); |
| 650 | desc = &txq->tx_desc_area[tx_index]; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 651 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 652 | /* |
| 653 | * The last fragment will generate an interrupt |
| 654 | * which will free the skb on TX completion. |
| 655 | */ |
| 656 | if (frag == nr_frags - 1) { |
| 657 | desc->cmd_sts = BUFFER_OWNED_BY_DMA | |
| 658 | ZERO_PADDING | TX_LAST_DESC | |
| 659 | TX_ENABLE_INTERRUPT; |
| 660 | txq->tx_skb[tx_index] = skb; |
| 661 | } else { |
| 662 | desc->cmd_sts = BUFFER_OWNED_BY_DMA; |
| 663 | txq->tx_skb[tx_index] = NULL; |
| 664 | } |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 665 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 666 | desc->l4i_chk = 0; |
| 667 | desc->byte_cnt = this_frag->size; |
| 668 | desc->buf_ptr = dma_map_page(NULL, this_frag->page, |
| 669 | this_frag->page_offset, |
| 670 | this_frag->size, |
| 671 | DMA_TO_DEVICE); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 672 | } |
| 673 | } |
| 674 | |
Byron Bradley | 324ff2c | 2008-02-04 23:47:15 -0800 | [diff] [blame] | 675 | static inline __be16 sum16_as_be(__sum16 sum) |
| 676 | { |
| 677 | return (__force __be16)sum; |
| 678 | } |
| 679 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 680 | static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb) |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 681 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 682 | int nr_frags = skb_shinfo(skb)->nr_frags; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 683 | int tx_index; |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 684 | struct tx_desc *desc; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 685 | u32 cmd_sts; |
| 686 | int length; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 687 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 688 | cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 689 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 690 | tx_index = txq_alloc_desc_index(txq); |
| 691 | desc = &txq->tx_desc_area[tx_index]; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 692 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 693 | if (nr_frags) { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 694 | txq_submit_frag_skb(txq, skb); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 695 | |
| 696 | length = skb_headlen(skb); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 697 | txq->tx_skb[tx_index] = NULL; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 698 | } else { |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 699 | cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 700 | length = skb->len; |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 701 | txq->tx_skb[tx_index] = skb; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | desc->byte_cnt = length; |
| 705 | desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 706 | |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 707 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Byron Bradley | 324ff2c | 2008-02-04 23:47:15 -0800 | [diff] [blame] | 708 | BUG_ON(skb->protocol != htons(ETH_P_IP)); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 709 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 710 | cmd_sts |= GEN_TCP_UDP_CHECKSUM | |
| 711 | GEN_IP_V4_CHECKSUM | |
| 712 | ip_hdr(skb)->ihl << TX_IHL_SHIFT; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 713 | |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 714 | switch (ip_hdr(skb)->protocol) { |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 715 | case IPPROTO_UDP: |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 716 | cmd_sts |= UDP_FRAME; |
Byron Bradley | 324ff2c | 2008-02-04 23:47:15 -0800 | [diff] [blame] | 717 | desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 718 | break; |
| 719 | case IPPROTO_TCP: |
Byron Bradley | 324ff2c | 2008-02-04 23:47:15 -0800 | [diff] [blame] | 720 | desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 721 | break; |
| 722 | default: |
| 723 | BUG(); |
| 724 | } |
| 725 | } else { |
| 726 | /* Errata BTS #50, IHL must be 5 if no HW checksum */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 727 | cmd_sts |= 5 << TX_IHL_SHIFT; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 728 | desc->l4i_chk = 0; |
| 729 | } |
| 730 | |
| 731 | /* ensure all other descriptors are written before first cmd_sts */ |
| 732 | wmb(); |
| 733 | desc->cmd_sts = cmd_sts; |
| 734 | |
| 735 | /* ensure all descriptors are written before poking hardware */ |
| 736 | wmb(); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 737 | txq_enable(txq); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 738 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 739 | txq->tx_desc_count += nr_frags + 1; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 740 | } |
| 741 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 742 | static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 744 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 745 | struct net_device_stats *stats = &dev->stats; |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 746 | struct tx_queue *txq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 749 | BUG_ON(netif_queue_stopped(dev)); |
Dale Farnsworth | 9484356 | 2006-04-11 18:24:26 -0700 | [diff] [blame] | 750 | |
Lennert Buytenhek | 4d64e71 | 2008-03-18 11:32:41 -0700 | [diff] [blame] | 751 | if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { |
| 752 | stats->tx_dropped++; |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 753 | dev_printk(KERN_DEBUG, &dev->dev, |
| 754 | "failed to linearize skb with tiny " |
| 755 | "unaligned fragment\n"); |
Lennert Buytenhek | c0d0f2c | 2008-03-18 11:34:34 -0700 | [diff] [blame] | 756 | return NETDEV_TX_BUSY; |
Dale Farnsworth | 9484356 | 2006-04-11 18:24:26 -0700 | [diff] [blame] | 757 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | spin_lock_irqsave(&mp->lock, flags); |
| 760 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 761 | txq = mp->txq; |
| 762 | |
| 763 | if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) { |
Lennert Buytenhek | 4d64e71 | 2008-03-18 11:32:41 -0700 | [diff] [blame] | 764 | printk(KERN_ERR "%s: transmit with queue full\n", dev->name); |
| 765 | netif_stop_queue(dev); |
| 766 | spin_unlock_irqrestore(&mp->lock, flags); |
Lennert Buytenhek | c0d0f2c | 2008-03-18 11:34:34 -0700 | [diff] [blame] | 767 | return NETDEV_TX_BUSY; |
Lennert Buytenhek | 4d64e71 | 2008-03-18 11:32:41 -0700 | [diff] [blame] | 768 | } |
| 769 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 770 | txq_submit_skb(txq, skb); |
Dale Farnsworth | e7e381f | 2007-09-14 11:23:16 -0700 | [diff] [blame] | 771 | stats->tx_bytes += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | stats->tx_packets++; |
| 773 | dev->trans_start = jiffies; |
| 774 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 775 | if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 776 | netif_stop_queue(dev); |
| 777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | spin_unlock_irqrestore(&mp->lock, flags); |
| 779 | |
Lennert Buytenhek | c0d0f2c | 2008-03-18 11:34:34 -0700 | [diff] [blame] | 780 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | } |
| 782 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 783 | |
Lennert Buytenhek | 89df5fd | 2008-06-02 00:51:05 +0200 | [diff] [blame^] | 784 | /* tx rate control **********************************************************/ |
| 785 | /* |
| 786 | * Set total maximum TX rate (shared by all TX queues for this port) |
| 787 | * to 'rate' bits per second, with a maximum burst of 'burst' bytes. |
| 788 | */ |
| 789 | static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst) |
| 790 | { |
| 791 | int token_rate; |
| 792 | int mtu; |
| 793 | int bucket_size; |
| 794 | |
| 795 | token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); |
| 796 | if (token_rate > 1023) |
| 797 | token_rate = 1023; |
| 798 | |
| 799 | mtu = (mp->dev->mtu + 255) >> 8; |
| 800 | if (mtu > 63) |
| 801 | mtu = 63; |
| 802 | |
| 803 | bucket_size = (burst + 255) >> 8; |
| 804 | if (bucket_size > 65535) |
| 805 | bucket_size = 65535; |
| 806 | |
| 807 | wrl(mp, TX_BW_RATE(mp->port_num), token_rate); |
| 808 | wrl(mp, TX_BW_MTU(mp->port_num), mtu); |
| 809 | wrl(mp, TX_BW_BURST(mp->port_num), bucket_size); |
| 810 | } |
| 811 | |
| 812 | static void txq_set_rate(struct tx_queue *txq, int rate, int burst) |
| 813 | { |
| 814 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
| 815 | int token_rate; |
| 816 | int bucket_size; |
| 817 | |
| 818 | token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); |
| 819 | if (token_rate > 1023) |
| 820 | token_rate = 1023; |
| 821 | |
| 822 | bucket_size = (burst + 255) >> 8; |
| 823 | if (bucket_size > 65535) |
| 824 | bucket_size = 65535; |
| 825 | |
| 826 | wrl(mp, TXQ_BW_TOKENS(mp->port_num), token_rate << 14); |
| 827 | wrl(mp, TXQ_BW_CONF(mp->port_num), |
| 828 | (bucket_size << 10) | token_rate); |
| 829 | } |
| 830 | |
| 831 | static void txq_set_fixed_prio_mode(struct tx_queue *txq) |
| 832 | { |
| 833 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
| 834 | int off; |
| 835 | u32 val; |
| 836 | |
| 837 | /* |
| 838 | * Turn on fixed priority mode. |
| 839 | */ |
| 840 | off = TXQ_FIX_PRIO_CONF(mp->port_num); |
| 841 | |
| 842 | val = rdl(mp, off); |
| 843 | val |= 1; |
| 844 | wrl(mp, off, val); |
| 845 | } |
| 846 | |
| 847 | static void txq_set_wrr(struct tx_queue *txq, int weight) |
| 848 | { |
| 849 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
| 850 | int off; |
| 851 | u32 val; |
| 852 | |
| 853 | /* |
| 854 | * Turn off fixed priority mode. |
| 855 | */ |
| 856 | off = TXQ_FIX_PRIO_CONF(mp->port_num); |
| 857 | |
| 858 | val = rdl(mp, off); |
| 859 | val &= ~1; |
| 860 | wrl(mp, off, val); |
| 861 | |
| 862 | /* |
| 863 | * Configure WRR weight for this queue. |
| 864 | */ |
| 865 | off = TXQ_BW_WRR_CONF(mp->port_num); |
| 866 | |
| 867 | val = rdl(mp, off); |
| 868 | val = (val & ~0xff) | (weight & 0xff); |
| 869 | wrl(mp, off, val); |
| 870 | } |
| 871 | |
| 872 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 873 | /* mii management interface *************************************************/ |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 874 | #define SMI_BUSY 0x10000000 |
| 875 | #define SMI_READ_VALID 0x08000000 |
| 876 | #define SMI_OPCODE_READ 0x04000000 |
| 877 | #define SMI_OPCODE_WRITE 0x00000000 |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 878 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 879 | static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr, |
| 880 | unsigned int reg, unsigned int *value) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 881 | { |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 882 | void __iomem *smi_reg = mp->shared_smi->base + SMI_REG; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 883 | unsigned long flags; |
| 884 | int i; |
| 885 | |
| 886 | /* the SMI register is a shared resource */ |
| 887 | spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); |
| 888 | |
| 889 | /* wait for the SMI register to become available */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 890 | for (i = 0; readl(smi_reg) & SMI_BUSY; i++) { |
Lennert Buytenhek | e1bea50 | 2008-06-01 01:29:14 +0200 | [diff] [blame] | 891 | if (i == 1000) { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 892 | printk("%s: PHY busy timeout\n", mp->dev->name); |
| 893 | goto out; |
| 894 | } |
Lennert Buytenhek | e1bea50 | 2008-06-01 01:29:14 +0200 | [diff] [blame] | 895 | udelay(10); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 896 | } |
| 897 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 898 | writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 899 | |
| 900 | /* now wait for the data to be valid */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 901 | for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) { |
Lennert Buytenhek | e1bea50 | 2008-06-01 01:29:14 +0200 | [diff] [blame] | 902 | if (i == 1000) { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 903 | printk("%s: PHY read timeout\n", mp->dev->name); |
| 904 | goto out; |
| 905 | } |
Lennert Buytenhek | e1bea50 | 2008-06-01 01:29:14 +0200 | [diff] [blame] | 906 | udelay(10); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | *value = readl(smi_reg) & 0xffff; |
| 910 | out: |
| 911 | spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); |
| 912 | } |
| 913 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 914 | static void smi_reg_write(struct mv643xx_eth_private *mp, |
| 915 | unsigned int addr, |
| 916 | unsigned int reg, unsigned int value) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 917 | { |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 918 | void __iomem *smi_reg = mp->shared_smi->base + SMI_REG; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 919 | unsigned long flags; |
| 920 | int i; |
| 921 | |
| 922 | /* the SMI register is a shared resource */ |
| 923 | spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); |
| 924 | |
| 925 | /* wait for the SMI register to become available */ |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 926 | for (i = 0; readl(smi_reg) & SMI_BUSY; i++) { |
Lennert Buytenhek | e1bea50 | 2008-06-01 01:29:14 +0200 | [diff] [blame] | 927 | if (i == 1000) { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 928 | printk("%s: PHY busy timeout\n", mp->dev->name); |
| 929 | goto out; |
| 930 | } |
Lennert Buytenhek | e1bea50 | 2008-06-01 01:29:14 +0200 | [diff] [blame] | 931 | udelay(10); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 932 | } |
| 933 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 934 | writel(SMI_OPCODE_WRITE | (reg << 21) | |
| 935 | (addr << 16) | (value & 0xffff), smi_reg); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 936 | out: |
| 937 | spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); |
| 938 | } |
| 939 | |
| 940 | |
| 941 | /* mib counters *************************************************************/ |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 942 | static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 943 | { |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame] | 944 | return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 945 | } |
| 946 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 947 | static void mib_counters_clear(struct mv643xx_eth_private *mp) |
| 948 | { |
| 949 | int i; |
| 950 | |
| 951 | for (i = 0; i < 0x80; i += 4) |
| 952 | mib_read(mp, i); |
| 953 | } |
| 954 | |
| 955 | static void mib_counters_update(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 956 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 957 | struct mib_counters *p = &mp->mib_counters; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 958 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 959 | p->good_octets_received += mib_read(mp, 0x00); |
| 960 | p->good_octets_received += (u64)mib_read(mp, 0x04) << 32; |
| 961 | p->bad_octets_received += mib_read(mp, 0x08); |
| 962 | p->internal_mac_transmit_err += mib_read(mp, 0x0c); |
| 963 | p->good_frames_received += mib_read(mp, 0x10); |
| 964 | p->bad_frames_received += mib_read(mp, 0x14); |
| 965 | p->broadcast_frames_received += mib_read(mp, 0x18); |
| 966 | p->multicast_frames_received += mib_read(mp, 0x1c); |
| 967 | p->frames_64_octets += mib_read(mp, 0x20); |
| 968 | p->frames_65_to_127_octets += mib_read(mp, 0x24); |
| 969 | p->frames_128_to_255_octets += mib_read(mp, 0x28); |
| 970 | p->frames_256_to_511_octets += mib_read(mp, 0x2c); |
| 971 | p->frames_512_to_1023_octets += mib_read(mp, 0x30); |
| 972 | p->frames_1024_to_max_octets += mib_read(mp, 0x34); |
| 973 | p->good_octets_sent += mib_read(mp, 0x38); |
| 974 | p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32; |
| 975 | p->good_frames_sent += mib_read(mp, 0x40); |
| 976 | p->excessive_collision += mib_read(mp, 0x44); |
| 977 | p->multicast_frames_sent += mib_read(mp, 0x48); |
| 978 | p->broadcast_frames_sent += mib_read(mp, 0x4c); |
| 979 | p->unrec_mac_control_received += mib_read(mp, 0x50); |
| 980 | p->fc_sent += mib_read(mp, 0x54); |
| 981 | p->good_fc_received += mib_read(mp, 0x58); |
| 982 | p->bad_fc_received += mib_read(mp, 0x5c); |
| 983 | p->undersize_received += mib_read(mp, 0x60); |
| 984 | p->fragments_received += mib_read(mp, 0x64); |
| 985 | p->oversize_received += mib_read(mp, 0x68); |
| 986 | p->jabber_received += mib_read(mp, 0x6c); |
| 987 | p->mac_receive_error += mib_read(mp, 0x70); |
| 988 | p->bad_crc_event += mib_read(mp, 0x74); |
| 989 | p->collision += mib_read(mp, 0x78); |
| 990 | p->late_collision += mib_read(mp, 0x7c); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | |
| 994 | /* ethtool ******************************************************************/ |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 995 | struct mv643xx_eth_stats { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 996 | char stat_string[ETH_GSTRING_LEN]; |
| 997 | int sizeof_stat; |
Lennert Buytenhek | 1682005 | 2008-06-01 11:40:29 +0200 | [diff] [blame] | 998 | int netdev_off; |
| 999 | int mp_off; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1000 | }; |
| 1001 | |
Lennert Buytenhek | 1682005 | 2008-06-01 11:40:29 +0200 | [diff] [blame] | 1002 | #define SSTAT(m) \ |
| 1003 | { #m, FIELD_SIZEOF(struct net_device_stats, m), \ |
| 1004 | offsetof(struct net_device, stats.m), -1 } |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1005 | |
Lennert Buytenhek | 1682005 | 2008-06-01 11:40:29 +0200 | [diff] [blame] | 1006 | #define MIBSTAT(m) \ |
| 1007 | { #m, FIELD_SIZEOF(struct mib_counters, m), \ |
| 1008 | -1, offsetof(struct mv643xx_eth_private, mib_counters.m) } |
| 1009 | |
| 1010 | static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { |
| 1011 | SSTAT(rx_packets), |
| 1012 | SSTAT(tx_packets), |
| 1013 | SSTAT(rx_bytes), |
| 1014 | SSTAT(tx_bytes), |
| 1015 | SSTAT(rx_errors), |
| 1016 | SSTAT(tx_errors), |
| 1017 | SSTAT(rx_dropped), |
| 1018 | SSTAT(tx_dropped), |
| 1019 | MIBSTAT(good_octets_received), |
| 1020 | MIBSTAT(bad_octets_received), |
| 1021 | MIBSTAT(internal_mac_transmit_err), |
| 1022 | MIBSTAT(good_frames_received), |
| 1023 | MIBSTAT(bad_frames_received), |
| 1024 | MIBSTAT(broadcast_frames_received), |
| 1025 | MIBSTAT(multicast_frames_received), |
| 1026 | MIBSTAT(frames_64_octets), |
| 1027 | MIBSTAT(frames_65_to_127_octets), |
| 1028 | MIBSTAT(frames_128_to_255_octets), |
| 1029 | MIBSTAT(frames_256_to_511_octets), |
| 1030 | MIBSTAT(frames_512_to_1023_octets), |
| 1031 | MIBSTAT(frames_1024_to_max_octets), |
| 1032 | MIBSTAT(good_octets_sent), |
| 1033 | MIBSTAT(good_frames_sent), |
| 1034 | MIBSTAT(excessive_collision), |
| 1035 | MIBSTAT(multicast_frames_sent), |
| 1036 | MIBSTAT(broadcast_frames_sent), |
| 1037 | MIBSTAT(unrec_mac_control_received), |
| 1038 | MIBSTAT(fc_sent), |
| 1039 | MIBSTAT(good_fc_received), |
| 1040 | MIBSTAT(bad_fc_received), |
| 1041 | MIBSTAT(undersize_received), |
| 1042 | MIBSTAT(fragments_received), |
| 1043 | MIBSTAT(oversize_received), |
| 1044 | MIBSTAT(jabber_received), |
| 1045 | MIBSTAT(mac_receive_error), |
| 1046 | MIBSTAT(bad_crc_event), |
| 1047 | MIBSTAT(collision), |
| 1048 | MIBSTAT(late_collision), |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1049 | }; |
| 1050 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1051 | static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1052 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1053 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1054 | int err; |
| 1055 | |
| 1056 | spin_lock_irq(&mp->lock); |
| 1057 | err = mii_ethtool_gset(&mp->mii, cmd); |
| 1058 | spin_unlock_irq(&mp->lock); |
| 1059 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1060 | /* |
| 1061 | * The MAC does not support 1000baseT_Half. |
| 1062 | */ |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1063 | cmd->supported &= ~SUPPORTED_1000baseT_Half; |
| 1064 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; |
| 1065 | |
| 1066 | return err; |
| 1067 | } |
| 1068 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1069 | static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1070 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1071 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1072 | int err; |
| 1073 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1074 | /* |
| 1075 | * The MAC does not support 1000baseT_Half. |
| 1076 | */ |
| 1077 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; |
| 1078 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1079 | spin_lock_irq(&mp->lock); |
| 1080 | err = mii_ethtool_sset(&mp->mii, cmd); |
| 1081 | spin_unlock_irq(&mp->lock); |
| 1082 | |
| 1083 | return err; |
| 1084 | } |
| 1085 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1086 | static void mv643xx_eth_get_drvinfo(struct net_device *dev, |
| 1087 | struct ethtool_drvinfo *drvinfo) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1088 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1089 | strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32); |
| 1090 | strncpy(drvinfo->version, mv643xx_eth_driver_version, 32); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1091 | strncpy(drvinfo->fw_version, "N/A", 32); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1092 | strncpy(drvinfo->bus_info, "platform", 32); |
Lennert Buytenhek | 1682005 | 2008-06-01 11:40:29 +0200 | [diff] [blame] | 1093 | drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1094 | } |
| 1095 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1096 | static int mv643xx_eth_nway_reset(struct net_device *dev) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1097 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1098 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1099 | |
| 1100 | return mii_nway_restart(&mp->mii); |
| 1101 | } |
| 1102 | |
| 1103 | static u32 mv643xx_eth_get_link(struct net_device *dev) |
| 1104 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1105 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1106 | |
| 1107 | return mii_link_ok(&mp->mii); |
| 1108 | } |
| 1109 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1110 | static void mv643xx_eth_get_strings(struct net_device *dev, |
| 1111 | uint32_t stringset, uint8_t *data) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1112 | { |
| 1113 | int i; |
| 1114 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1115 | if (stringset == ETH_SS_STATS) { |
| 1116 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1117 | memcpy(data + i * ETH_GSTRING_LEN, |
Lennert Buytenhek | 1682005 | 2008-06-01 11:40:29 +0200 | [diff] [blame] | 1118 | mv643xx_eth_stats[i].stat_string, |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1119 | ETH_GSTRING_LEN); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1120 | } |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1121 | } |
| 1122 | } |
| 1123 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1124 | static void mv643xx_eth_get_ethtool_stats(struct net_device *dev, |
| 1125 | struct ethtool_stats *stats, |
| 1126 | uint64_t *data) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1127 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1128 | struct mv643xx_eth_private *mp = dev->priv; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1129 | int i; |
| 1130 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1131 | mib_counters_update(mp); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1132 | |
Lennert Buytenhek | 1682005 | 2008-06-01 11:40:29 +0200 | [diff] [blame] | 1133 | for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { |
| 1134 | const struct mv643xx_eth_stats *stat; |
| 1135 | void *p; |
| 1136 | |
| 1137 | stat = mv643xx_eth_stats + i; |
| 1138 | |
| 1139 | if (stat->netdev_off >= 0) |
| 1140 | p = ((void *)mp->dev) + stat->netdev_off; |
| 1141 | else |
| 1142 | p = ((void *)mp) + stat->mp_off; |
| 1143 | |
| 1144 | data[i] = (stat->sizeof_stat == 8) ? |
| 1145 | *(uint64_t *)p : *(uint32_t *)p; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1146 | } |
| 1147 | } |
| 1148 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1149 | static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1150 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1151 | if (sset == ETH_SS_STATS) |
Lennert Buytenhek | 1682005 | 2008-06-01 11:40:29 +0200 | [diff] [blame] | 1152 | return ARRAY_SIZE(mv643xx_eth_stats); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1153 | |
| 1154 | return -EOPNOTSUPP; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1155 | } |
| 1156 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1157 | static const struct ethtool_ops mv643xx_eth_ethtool_ops = { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1158 | .get_settings = mv643xx_eth_get_settings, |
| 1159 | .set_settings = mv643xx_eth_set_settings, |
| 1160 | .get_drvinfo = mv643xx_eth_get_drvinfo, |
| 1161 | .nway_reset = mv643xx_eth_nway_reset, |
| 1162 | .get_link = mv643xx_eth_get_link, |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1163 | .set_sg = ethtool_op_set_sg, |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1164 | .get_strings = mv643xx_eth_get_strings, |
| 1165 | .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1166 | .get_sset_count = mv643xx_eth_get_sset_count, |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1167 | }; |
| 1168 | |
| 1169 | |
| 1170 | /* address handling *********************************************************/ |
Lennert Buytenhek | 5daffe9 | 2008-06-01 02:52:41 +0200 | [diff] [blame] | 1171 | static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1172 | { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1173 | unsigned int mac_h; |
| 1174 | unsigned int mac_l; |
| 1175 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1176 | mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num)); |
| 1177 | mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1178 | |
Lennert Buytenhek | 5daffe9 | 2008-06-01 02:52:41 +0200 | [diff] [blame] | 1179 | addr[0] = (mac_h >> 24) & 0xff; |
| 1180 | addr[1] = (mac_h >> 16) & 0xff; |
| 1181 | addr[2] = (mac_h >> 8) & 0xff; |
| 1182 | addr[3] = mac_h & 0xff; |
| 1183 | addr[4] = (mac_l >> 8) & 0xff; |
| 1184 | addr[5] = mac_l & 0xff; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1185 | } |
| 1186 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1187 | static void init_mac_tables(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1188 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1189 | int i; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1190 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1191 | for (i = 0; i < 0x100; i += 4) { |
| 1192 | wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); |
| 1193 | wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1194 | } |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1195 | |
| 1196 | for (i = 0; i < 0x10; i += 4) |
| 1197 | wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1198 | } |
| 1199 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1200 | static void set_filter_table_entry(struct mv643xx_eth_private *mp, |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1201 | int table, unsigned char entry) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1202 | { |
| 1203 | unsigned int table_reg; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1204 | |
| 1205 | /* Set "accepts frame bit" at specified table entry */ |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1206 | table_reg = rdl(mp, table + (entry & 0xfc)); |
| 1207 | table_reg |= 0x01 << (8 * (entry & 3)); |
| 1208 | wrl(mp, table + (entry & 0xfc), table_reg); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1209 | } |
| 1210 | |
Lennert Buytenhek | 5daffe9 | 2008-06-01 02:52:41 +0200 | [diff] [blame] | 1211 | static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1212 | { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1213 | unsigned int mac_h; |
| 1214 | unsigned int mac_l; |
| 1215 | int table; |
| 1216 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1217 | mac_l = (addr[4] << 8) | addr[5]; |
| 1218 | mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1219 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1220 | wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l); |
| 1221 | wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1222 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1223 | table = UNICAST_TABLE(mp->port_num); |
Lennert Buytenhek | 5daffe9 | 2008-06-01 02:52:41 +0200 | [diff] [blame] | 1224 | set_filter_table_entry(mp, table, addr[5] & 0x0f); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1225 | } |
| 1226 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1227 | static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) |
| 1228 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1229 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1230 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1231 | /* +2 is for the offset of the HW addr type */ |
| 1232 | memcpy(dev->dev_addr, addr + 2, 6); |
| 1233 | |
| 1234 | init_mac_tables(mp); |
| 1235 | uc_addr_set(mp, dev->dev_addr); |
| 1236 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1237 | return 0; |
| 1238 | } |
| 1239 | |
Lennert Buytenhek | 6987656 | 2008-06-01 11:43:32 +0200 | [diff] [blame] | 1240 | static int addr_crc(unsigned char *addr) |
| 1241 | { |
| 1242 | int crc = 0; |
| 1243 | int i; |
| 1244 | |
| 1245 | for (i = 0; i < 6; i++) { |
| 1246 | int j; |
| 1247 | |
| 1248 | crc = (crc ^ addr[i]) << 8; |
| 1249 | for (j = 7; j >= 0; j--) { |
| 1250 | if (crc & (0x100 << j)) |
| 1251 | crc ^= 0x107 << j; |
| 1252 | } |
| 1253 | } |
| 1254 | |
| 1255 | return crc; |
| 1256 | } |
| 1257 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1258 | static void mv643xx_eth_set_rx_mode(struct net_device *dev) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1259 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1260 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
| 1261 | u32 port_config; |
| 1262 | struct dev_addr_list *addr; |
| 1263 | int i; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1264 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1265 | port_config = rdl(mp, PORT_CONFIG(mp->port_num)); |
| 1266 | if (dev->flags & IFF_PROMISC) |
| 1267 | port_config |= UNICAST_PROMISCUOUS_MODE; |
| 1268 | else |
| 1269 | port_config &= ~UNICAST_PROMISCUOUS_MODE; |
| 1270 | wrl(mp, PORT_CONFIG(mp->port_num), port_config); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1271 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1272 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { |
| 1273 | int port_num = mp->port_num; |
| 1274 | u32 accept = 0x01010101; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1275 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1276 | for (i = 0; i < 0x100; i += 4) { |
| 1277 | wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept); |
| 1278 | wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1279 | } |
| 1280 | return; |
| 1281 | } |
| 1282 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1283 | for (i = 0; i < 0x100; i += 4) { |
| 1284 | wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); |
| 1285 | wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1286 | } |
| 1287 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1288 | for (addr = dev->mc_list; addr != NULL; addr = addr->next) { |
| 1289 | u8 *a = addr->da_addr; |
| 1290 | int table; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1291 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1292 | if (addr->da_addrlen != 6) |
| 1293 | continue; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1294 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1295 | if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) { |
| 1296 | table = SPECIAL_MCAST_TABLE(mp->port_num); |
| 1297 | set_filter_table_entry(mp, table, a[5]); |
| 1298 | } else { |
| 1299 | int crc = addr_crc(a); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1300 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1301 | table = OTHER_MCAST_TABLE(mp->port_num); |
| 1302 | set_filter_table_entry(mp, table, crc); |
| 1303 | } |
| 1304 | } |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1305 | } |
| 1306 | |
| 1307 | |
| 1308 | /* rx/tx queue initialisation ***********************************************/ |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1309 | static int rxq_init(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1310 | { |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1311 | struct rx_queue *rxq = mp->rxq; |
| 1312 | struct rx_desc *rx_desc; |
| 1313 | int size; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1314 | int i; |
| 1315 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1316 | rxq->rx_ring_size = mp->default_rx_ring_size; |
| 1317 | |
| 1318 | rxq->rx_desc_count = 0; |
| 1319 | rxq->rx_curr_desc = 0; |
| 1320 | rxq->rx_used_desc = 0; |
| 1321 | |
| 1322 | size = rxq->rx_ring_size * sizeof(struct rx_desc); |
| 1323 | |
| 1324 | if (size <= mp->rx_desc_sram_size) { |
| 1325 | rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr, |
| 1326 | mp->rx_desc_sram_size); |
| 1327 | rxq->rx_desc_dma = mp->rx_desc_sram_addr; |
| 1328 | } else { |
| 1329 | rxq->rx_desc_area = dma_alloc_coherent(NULL, size, |
| 1330 | &rxq->rx_desc_dma, |
| 1331 | GFP_KERNEL); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1332 | } |
| 1333 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1334 | if (rxq->rx_desc_area == NULL) { |
| 1335 | dev_printk(KERN_ERR, &mp->dev->dev, |
| 1336 | "can't allocate rx ring (%d bytes)\n", size); |
| 1337 | goto out; |
| 1338 | } |
| 1339 | memset(rxq->rx_desc_area, 0, size); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1340 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1341 | rxq->rx_desc_area_size = size; |
| 1342 | rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb), |
| 1343 | GFP_KERNEL); |
| 1344 | if (rxq->rx_skb == NULL) { |
| 1345 | dev_printk(KERN_ERR, &mp->dev->dev, |
| 1346 | "can't allocate rx skb ring\n"); |
| 1347 | goto out_free; |
| 1348 | } |
| 1349 | |
| 1350 | rx_desc = (struct rx_desc *)rxq->rx_desc_area; |
| 1351 | for (i = 0; i < rxq->rx_ring_size; i++) { |
| 1352 | int nexti = (i + 1) % rxq->rx_ring_size; |
| 1353 | rx_desc[i].next_desc_ptr = rxq->rx_desc_dma + |
| 1354 | nexti * sizeof(struct rx_desc); |
| 1355 | } |
| 1356 | |
| 1357 | init_timer(&rxq->rx_oom); |
| 1358 | rxq->rx_oom.data = (unsigned long)rxq; |
| 1359 | rxq->rx_oom.function = rxq_refill_timer_wrapper; |
| 1360 | |
| 1361 | return 0; |
| 1362 | |
| 1363 | |
| 1364 | out_free: |
| 1365 | if (size <= mp->rx_desc_sram_size) |
| 1366 | iounmap(rxq->rx_desc_area); |
| 1367 | else |
| 1368 | dma_free_coherent(NULL, size, |
| 1369 | rxq->rx_desc_area, |
| 1370 | rxq->rx_desc_dma); |
| 1371 | |
| 1372 | out: |
| 1373 | return -ENOMEM; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1374 | } |
| 1375 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1376 | static void rxq_deinit(struct rx_queue *rxq) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1377 | { |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1378 | struct mv643xx_eth_private *mp = rxq_to_mp(rxq); |
| 1379 | int i; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1380 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1381 | rxq_disable(rxq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1382 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1383 | del_timer_sync(&rxq->rx_oom); |
| 1384 | |
| 1385 | for (i = 0; i < rxq->rx_ring_size; i++) { |
| 1386 | if (rxq->rx_skb[i]) { |
| 1387 | dev_kfree_skb(rxq->rx_skb[i]); |
| 1388 | rxq->rx_desc_count--; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1389 | } |
| 1390 | } |
| 1391 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1392 | if (rxq->rx_desc_count) { |
| 1393 | dev_printk(KERN_ERR, &mp->dev->dev, |
| 1394 | "error freeing rx ring -- %d skbs stuck\n", |
| 1395 | rxq->rx_desc_count); |
| 1396 | } |
| 1397 | |
| 1398 | if (rxq->rx_desc_area_size <= mp->rx_desc_sram_size) |
| 1399 | iounmap(rxq->rx_desc_area); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1400 | else |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1401 | dma_free_coherent(NULL, rxq->rx_desc_area_size, |
| 1402 | rxq->rx_desc_area, rxq->rx_desc_dma); |
| 1403 | |
| 1404 | kfree(rxq->rx_skb); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1405 | } |
| 1406 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1407 | static int txq_init(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1408 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1409 | struct tx_queue *txq = mp->txq; |
| 1410 | struct tx_desc *tx_desc; |
| 1411 | int size; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1412 | int i; |
| 1413 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1414 | txq->tx_ring_size = mp->default_tx_ring_size; |
| 1415 | |
| 1416 | txq->tx_desc_count = 0; |
| 1417 | txq->tx_curr_desc = 0; |
| 1418 | txq->tx_used_desc = 0; |
| 1419 | |
| 1420 | size = txq->tx_ring_size * sizeof(struct tx_desc); |
| 1421 | |
| 1422 | if (size <= mp->tx_desc_sram_size) { |
| 1423 | txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr, |
| 1424 | mp->tx_desc_sram_size); |
| 1425 | txq->tx_desc_dma = mp->tx_desc_sram_addr; |
| 1426 | } else { |
| 1427 | txq->tx_desc_area = dma_alloc_coherent(NULL, size, |
| 1428 | &txq->tx_desc_dma, |
| 1429 | GFP_KERNEL); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1430 | } |
| 1431 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1432 | if (txq->tx_desc_area == NULL) { |
| 1433 | dev_printk(KERN_ERR, &mp->dev->dev, |
| 1434 | "can't allocate tx ring (%d bytes)\n", size); |
| 1435 | goto out; |
| 1436 | } |
| 1437 | memset(txq->tx_desc_area, 0, size); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1438 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1439 | txq->tx_desc_area_size = size; |
| 1440 | txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb), |
| 1441 | GFP_KERNEL); |
| 1442 | if (txq->tx_skb == NULL) { |
| 1443 | dev_printk(KERN_ERR, &mp->dev->dev, |
| 1444 | "can't allocate tx skb ring\n"); |
| 1445 | goto out_free; |
| 1446 | } |
| 1447 | |
| 1448 | tx_desc = (struct tx_desc *)txq->tx_desc_area; |
| 1449 | for (i = 0; i < txq->tx_ring_size; i++) { |
| 1450 | int nexti = (i + 1) % txq->tx_ring_size; |
| 1451 | tx_desc[i].next_desc_ptr = txq->tx_desc_dma + |
| 1452 | nexti * sizeof(struct tx_desc); |
| 1453 | } |
| 1454 | |
| 1455 | return 0; |
| 1456 | |
| 1457 | |
| 1458 | out_free: |
| 1459 | if (size <= mp->tx_desc_sram_size) |
| 1460 | iounmap(txq->tx_desc_area); |
| 1461 | else |
| 1462 | dma_free_coherent(NULL, size, |
| 1463 | txq->tx_desc_area, |
| 1464 | txq->tx_desc_dma); |
| 1465 | |
| 1466 | out: |
| 1467 | return -ENOMEM; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1468 | } |
| 1469 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1470 | static void txq_reclaim(struct tx_queue *txq, int force) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1471 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1472 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1473 | unsigned long flags; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1474 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1475 | spin_lock_irqsave(&mp->lock, flags); |
| 1476 | while (txq->tx_desc_count > 0) { |
| 1477 | int tx_index; |
| 1478 | struct tx_desc *desc; |
| 1479 | u32 cmd_sts; |
| 1480 | struct sk_buff *skb; |
| 1481 | dma_addr_t addr; |
| 1482 | int count; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1483 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1484 | tx_index = txq->tx_used_desc; |
| 1485 | desc = &txq->tx_desc_area[tx_index]; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1486 | cmd_sts = desc->cmd_sts; |
| 1487 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1488 | if (!force && (cmd_sts & BUFFER_OWNED_BY_DMA)) |
| 1489 | break; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1490 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1491 | txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size; |
| 1492 | txq->tx_desc_count--; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1493 | |
| 1494 | addr = desc->buf_ptr; |
| 1495 | count = desc->byte_cnt; |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1496 | skb = txq->tx_skb[tx_index]; |
| 1497 | txq->tx_skb[tx_index] = NULL; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1498 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 1499 | if (cmd_sts & ERROR_SUMMARY) { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1500 | dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n"); |
| 1501 | mp->dev->stats.tx_errors++; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1502 | } |
| 1503 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1504 | /* |
| 1505 | * Drop mp->lock while we free the skb. |
| 1506 | */ |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1507 | spin_unlock_irqrestore(&mp->lock, flags); |
| 1508 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 1509 | if (cmd_sts & TX_FIRST_DESC) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1510 | dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE); |
| 1511 | else |
| 1512 | dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE); |
| 1513 | |
| 1514 | if (skb) |
| 1515 | dev_kfree_skb_irq(skb); |
| 1516 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1517 | spin_lock_irqsave(&mp->lock, flags); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1518 | } |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1519 | spin_unlock_irqrestore(&mp->lock, flags); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1520 | } |
| 1521 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1522 | static void txq_deinit(struct tx_queue *txq) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1523 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1524 | struct mv643xx_eth_private *mp = txq_to_mp(txq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1525 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1526 | txq_disable(txq); |
| 1527 | txq_reclaim(txq, 1); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1528 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1529 | BUG_ON(txq->tx_used_desc != txq->tx_curr_desc); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1530 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1531 | if (txq->tx_desc_area_size <= mp->tx_desc_sram_size) |
| 1532 | iounmap(txq->tx_desc_area); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1533 | else |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1534 | dma_free_coherent(NULL, txq->tx_desc_area_size, |
| 1535 | txq->tx_desc_area, txq->tx_desc_dma); |
| 1536 | |
| 1537 | kfree(txq->tx_skb); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1538 | } |
| 1539 | |
| 1540 | |
| 1541 | /* netdev ops and related ***************************************************/ |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1542 | static void update_pscr(struct mv643xx_eth_private *mp, int speed, int duplex) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1543 | { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1544 | u32 pscr_o; |
| 1545 | u32 pscr_n; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1546 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1547 | pscr_o = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1548 | |
| 1549 | /* clear speed, duplex and rx buffer size fields */ |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1550 | pscr_n = pscr_o & ~(SET_MII_SPEED_TO_100 | |
| 1551 | SET_GMII_SPEED_TO_1000 | |
| 1552 | SET_FULL_DUPLEX_MODE | |
| 1553 | MAX_RX_PACKET_MASK); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1554 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1555 | if (speed == SPEED_1000) { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1556 | pscr_n |= SET_GMII_SPEED_TO_1000 | MAX_RX_PACKET_9700BYTE; |
| 1557 | } else { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1558 | if (speed == SPEED_100) |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1559 | pscr_n |= SET_MII_SPEED_TO_100; |
| 1560 | pscr_n |= MAX_RX_PACKET_1522BYTE; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1561 | } |
| 1562 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1563 | if (duplex == DUPLEX_FULL) |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1564 | pscr_n |= SET_FULL_DUPLEX_MODE; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1565 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1566 | if (pscr_n != pscr_o) { |
| 1567 | if ((pscr_o & SERIAL_PORT_ENABLE) == 0) |
| 1568 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); |
| 1569 | else { |
| 1570 | txq_disable(mp->txq); |
| 1571 | pscr_o &= ~SERIAL_PORT_ENABLE; |
| 1572 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_o); |
| 1573 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); |
| 1574 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n); |
| 1575 | txq_enable(mp->txq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1576 | } |
| 1577 | } |
| 1578 | } |
| 1579 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1580 | static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1581 | { |
| 1582 | struct net_device *dev = (struct net_device *)dev_id; |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1583 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1584 | u32 int_cause; |
| 1585 | u32 int_cause_ext; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1586 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1587 | int_cause = rdl(mp, INT_CAUSE(mp->port_num)) & (INT_RX | INT_EXT); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1588 | if (int_cause == 0) |
| 1589 | return IRQ_NONE; |
| 1590 | |
| 1591 | int_cause_ext = 0; |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 1592 | if (int_cause & INT_EXT) { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1593 | int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num)) |
Lennert Buytenhek | 073a345 | 2008-06-01 02:00:31 +0200 | [diff] [blame] | 1594 | & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1595 | wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1596 | } |
| 1597 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1598 | if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK)) { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1599 | if (mii_link_ok(&mp->mii)) { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1600 | struct ethtool_cmd cmd; |
| 1601 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1602 | mii_ethtool_gset(&mp->mii, &cmd); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1603 | update_pscr(mp, cmd.speed, cmd.duplex); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1604 | txq_enable(mp->txq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1605 | if (!netif_carrier_ok(dev)) { |
| 1606 | netif_carrier_on(dev); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1607 | __txq_maybe_wake(mp->txq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1608 | } |
| 1609 | } else if (netif_carrier_ok(dev)) { |
| 1610 | netif_stop_queue(dev); |
| 1611 | netif_carrier_off(dev); |
| 1612 | } |
| 1613 | } |
| 1614 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1615 | #ifdef MV643XX_ETH_NAPI |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 1616 | if (int_cause & INT_RX) { |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1617 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1618 | rdl(mp, INT_MASK(mp->port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1619 | |
| 1620 | netif_rx_schedule(dev, &mp->napi); |
| 1621 | } |
| 1622 | #else |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 1623 | if (int_cause & INT_RX) |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1624 | rxq_process(mp->rxq, INT_MAX); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1625 | #endif |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1626 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1627 | if (int_cause_ext & INT_EXT_TX) { |
| 1628 | txq_reclaim(mp->txq, 0); |
| 1629 | __txq_maybe_wake(mp->txq); |
| 1630 | } |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1631 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1632 | return IRQ_HANDLED; |
| 1633 | } |
| 1634 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1635 | static void phy_reset(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1636 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1637 | unsigned int data; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1638 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1639 | smi_reg_read(mp, mp->phy_addr, 0, &data); |
| 1640 | data |= 0x8000; |
| 1641 | smi_reg_write(mp, mp->phy_addr, 0, data); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1642 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1643 | do { |
| 1644 | udelay(1); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1645 | smi_reg_read(mp, mp->phy_addr, 0, &data); |
| 1646 | } while (data & 0x8000); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1647 | } |
| 1648 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1649 | static void port_start(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1650 | { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1651 | u32 pscr; |
| 1652 | struct ethtool_cmd ethtool_cmd; |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1653 | int i; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1654 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1655 | /* |
| 1656 | * Configure basic link parameters. |
| 1657 | */ |
| 1658 | pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); |
| 1659 | pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS); |
| 1660 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); |
| 1661 | pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL | |
| 1662 | DISABLE_AUTO_NEG_SPEED_GMII | |
| 1663 | DISABLE_AUTO_NEG_FOR_DUPLEX | |
| 1664 | DO_NOT_FORCE_LINK_FAIL | |
| 1665 | SERIAL_PORT_CONTROL_RESERVED; |
| 1666 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); |
| 1667 | pscr |= SERIAL_PORT_ENABLE; |
| 1668 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1669 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1670 | wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE); |
| 1671 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1672 | mv643xx_eth_get_settings(mp->dev, ðtool_cmd); |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1673 | phy_reset(mp); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1674 | mv643xx_eth_set_settings(mp->dev, ðtool_cmd); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1675 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1676 | /* |
| 1677 | * Configure TX path and queues. |
| 1678 | */ |
Lennert Buytenhek | 89df5fd | 2008-06-02 00:51:05 +0200 | [diff] [blame^] | 1679 | tx_set_rate(mp, 1000000000, 16777216); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1680 | for (i = 0; i < 1; i++) { |
| 1681 | struct tx_queue *txq = mp->txq; |
| 1682 | int off = TXQ_CURRENT_DESC_PTR(mp->port_num); |
| 1683 | u32 addr; |
| 1684 | |
| 1685 | addr = (u32)txq->tx_desc_dma; |
| 1686 | addr += txq->tx_curr_desc * sizeof(struct tx_desc); |
| 1687 | wrl(mp, off, addr); |
Lennert Buytenhek | 89df5fd | 2008-06-02 00:51:05 +0200 | [diff] [blame^] | 1688 | |
| 1689 | txq_set_rate(txq, 1000000000, 16777216); |
| 1690 | txq_set_fixed_prio_mode(txq); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1691 | } |
| 1692 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1693 | /* |
| 1694 | * Add configured unicast address to address filter table. |
| 1695 | */ |
| 1696 | uc_addr_set(mp, mp->dev->dev_addr); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1697 | |
Lennert Buytenhek | d9a073e | 2008-06-01 01:22:06 +0200 | [diff] [blame] | 1698 | /* |
| 1699 | * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast |
| 1700 | * frames to RX queue #0. |
| 1701 | */ |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1702 | wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1703 | |
Lennert Buytenhek | 376489a | 2008-06-01 01:17:44 +0200 | [diff] [blame] | 1704 | /* |
| 1705 | * Treat BPDUs as normal multicasts, and disable partition mode. |
| 1706 | */ |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1707 | wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1708 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1709 | /* |
| 1710 | * Enable the receive queue. |
| 1711 | */ |
| 1712 | for (i = 0; i < 1; i++) { |
| 1713 | struct rx_queue *rxq = mp->rxq; |
| 1714 | int off = RXQ_CURRENT_DESC_PTR(mp->port_num); |
| 1715 | u32 addr; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1716 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1717 | addr = (u32)rxq->rx_desc_dma; |
| 1718 | addr += rxq->rx_curr_desc * sizeof(struct rx_desc); |
| 1719 | wrl(mp, off, addr); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1720 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1721 | rxq_enable(rxq); |
| 1722 | } |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1723 | } |
| 1724 | |
Lennert Buytenhek | ffd86bb | 2008-06-01 21:59:27 +0200 | [diff] [blame] | 1725 | static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1726 | { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1727 | unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; |
| 1728 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1729 | if (coal > 0x3fff) |
| 1730 | coal = 0x3fff; |
| 1731 | |
| 1732 | wrl(mp, SDMA_CONFIG(mp->port_num), |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1733 | ((coal & 0x3fff) << 8) | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1734 | (rdl(mp, SDMA_CONFIG(mp->port_num)) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1735 | & 0xffc000ff)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1736 | } |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1737 | |
Lennert Buytenhek | ffd86bb | 2008-06-01 21:59:27 +0200 | [diff] [blame] | 1738 | static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1739 | { |
| 1740 | unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; |
| 1741 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1742 | if (coal > 0x3fff) |
| 1743 | coal = 0x3fff; |
| 1744 | wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1745 | } |
| 1746 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1747 | static int mv643xx_eth_open(struct net_device *dev) |
| 1748 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1749 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1750 | int err; |
| 1751 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1752 | wrl(mp, INT_CAUSE(mp->port_num), 0); |
| 1753 | wrl(mp, INT_CAUSE_EXT(mp->port_num), 0); |
| 1754 | rdl(mp, INT_CAUSE_EXT(mp->port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1755 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1756 | err = request_irq(dev->irq, mv643xx_eth_irq, |
| 1757 | IRQF_SHARED | IRQF_SAMPLE_RANDOM, |
| 1758 | dev->name, dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1759 | if (err) { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1760 | dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n"); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1761 | return -EAGAIN; |
| 1762 | } |
| 1763 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1764 | init_mac_tables(mp); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1765 | |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1766 | err = rxq_init(mp); |
| 1767 | if (err) |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1768 | goto out; |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1769 | rxq_refill(mp->rxq); |
| 1770 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1771 | err = txq_init(mp); |
| 1772 | if (err) |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1773 | goto out_free; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1774 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1775 | #ifdef MV643XX_ETH_NAPI |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1776 | napi_enable(&mp->napi); |
| 1777 | #endif |
| 1778 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1779 | port_start(mp); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1780 | |
Lennert Buytenhek | ffd86bb | 2008-06-01 21:59:27 +0200 | [diff] [blame] | 1781 | set_rx_coal(mp, 0); |
| 1782 | set_tx_coal(mp, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1783 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1784 | wrl(mp, INT_MASK_EXT(mp->port_num), |
| 1785 | INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1786 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1787 | wrl(mp, INT_MASK(mp->port_num), INT_RX | INT_EXT); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1788 | |
| 1789 | return 0; |
| 1790 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1791 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1792 | out_free: |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1793 | rxq_deinit(mp->rxq); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1794 | out: |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1795 | free_irq(dev->irq, dev); |
| 1796 | |
| 1797 | return err; |
| 1798 | } |
| 1799 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1800 | static void port_reset(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1801 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1802 | unsigned int data; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1803 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1804 | txq_disable(mp->txq); |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1805 | rxq_disable(mp->rxq); |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1806 | while (!(rdl(mp, PORT_STATUS(mp->port_num)) & TX_FIFO_EMPTY)) |
| 1807 | udelay(10); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1808 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1809 | /* Reset the Enable bit in the Configuration Register */ |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1810 | data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); |
| 1811 | data &= ~(SERIAL_PORT_ENABLE | |
| 1812 | DO_NOT_FORCE_LINK_FAIL | |
| 1813 | FORCE_LINK_PASS); |
| 1814 | wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1815 | } |
| 1816 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1817 | static int mv643xx_eth_stop(struct net_device *dev) |
| 1818 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1819 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1820 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1821 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
| 1822 | rdl(mp, INT_MASK(mp->port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1823 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1824 | #ifdef MV643XX_ETH_NAPI |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1825 | napi_disable(&mp->napi); |
| 1826 | #endif |
| 1827 | netif_carrier_off(dev); |
| 1828 | netif_stop_queue(dev); |
| 1829 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1830 | free_irq(dev->irq, dev); |
| 1831 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 1832 | port_reset(mp); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1833 | mib_counters_update(mp); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1834 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 1835 | txq_deinit(mp->txq); |
Lennert Buytenhek | 8a57811 | 2008-06-01 18:09:35 +0200 | [diff] [blame] | 1836 | rxq_deinit(mp->rxq); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1837 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1838 | return 0; |
| 1839 | } |
| 1840 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1841 | static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1842 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1843 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1844 | |
| 1845 | return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL); |
| 1846 | } |
| 1847 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1848 | static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) |
| 1849 | { |
Lennert Buytenhek | 89df5fd | 2008-06-02 00:51:05 +0200 | [diff] [blame^] | 1850 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
| 1851 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1852 | if (new_mtu < 64 || new_mtu > 9500) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1853 | return -EINVAL; |
| 1854 | |
| 1855 | dev->mtu = new_mtu; |
Lennert Buytenhek | 89df5fd | 2008-06-02 00:51:05 +0200 | [diff] [blame^] | 1856 | tx_set_rate(mp, 1000000000, 16777216); |
| 1857 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1858 | if (!netif_running(dev)) |
| 1859 | return 0; |
| 1860 | |
| 1861 | /* |
| 1862 | * Stop and then re-open the interface. This will allocate RX |
| 1863 | * skbs of the new MTU. |
| 1864 | * There is a possible danger that the open will not succeed, |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1865 | * due to memory being full. |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1866 | */ |
| 1867 | mv643xx_eth_stop(dev); |
| 1868 | if (mv643xx_eth_open(dev)) { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1869 | dev_printk(KERN_ERR, &dev->dev, |
| 1870 | "fatal error on re-opening device after " |
| 1871 | "MTU change\n"); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1872 | } |
| 1873 | |
| 1874 | return 0; |
| 1875 | } |
| 1876 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1877 | static void tx_timeout_task(struct work_struct *ugly) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1878 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1879 | struct mv643xx_eth_private *mp; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1880 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1881 | mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task); |
| 1882 | if (netif_running(mp->dev)) { |
| 1883 | netif_stop_queue(mp->dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1884 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1885 | port_reset(mp); |
| 1886 | port_start(mp); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1887 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1888 | __txq_maybe_wake(mp->txq); |
| 1889 | } |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1890 | } |
| 1891 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1892 | static void mv643xx_eth_tx_timeout(struct net_device *dev) |
| 1893 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1894 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1895 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1896 | dev_printk(KERN_INFO, &dev->dev, "tx timeout\n"); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1897 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1898 | schedule_work(&mp->tx_timeout_task); |
| 1899 | } |
| 1900 | |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1901 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1902 | static void mv643xx_eth_netpoll(struct net_device *dev) |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1903 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1904 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1905 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1906 | wrl(mp, INT_MASK(mp->port_num), 0x00000000); |
| 1907 | rdl(mp, INT_MASK(mp->port_num)); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 1908 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1909 | mv643xx_eth_irq(dev->irq, dev); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 1910 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1911 | wrl(mp, INT_MASK(mp->port_num), INT_RX | INT_CAUSE_EXT); |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1912 | } |
| 1913 | #endif |
| 1914 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1915 | static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1916 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1917 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1918 | int val; |
| 1919 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1920 | smi_reg_read(mp, addr, reg, &val); |
| 1921 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1922 | return val; |
| 1923 | } |
| 1924 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1925 | static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1926 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1927 | struct mv643xx_eth_private *mp = netdev_priv(dev); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 1928 | smi_reg_write(mp, addr, reg, val); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1929 | } |
| 1930 | |
| 1931 | |
| 1932 | /* platform glue ************************************************************/ |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1933 | static void |
| 1934 | mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp, |
| 1935 | struct mbus_dram_target_info *dram) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1936 | { |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 1937 | void __iomem *base = msp->base; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1938 | u32 win_enable; |
| 1939 | u32 win_protect; |
| 1940 | int i; |
| 1941 | |
| 1942 | for (i = 0; i < 6; i++) { |
| 1943 | writel(0, base + WINDOW_BASE(i)); |
| 1944 | writel(0, base + WINDOW_SIZE(i)); |
| 1945 | if (i < 4) |
| 1946 | writel(0, base + WINDOW_REMAP_HIGH(i)); |
| 1947 | } |
| 1948 | |
| 1949 | win_enable = 0x3f; |
| 1950 | win_protect = 0; |
| 1951 | |
| 1952 | for (i = 0; i < dram->num_cs; i++) { |
| 1953 | struct mbus_dram_window *cs = dram->cs + i; |
| 1954 | |
| 1955 | writel((cs->base & 0xffff0000) | |
| 1956 | (cs->mbus_attr << 8) | |
| 1957 | dram->mbus_dram_target_id, base + WINDOW_BASE(i)); |
| 1958 | writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); |
| 1959 | |
| 1960 | win_enable &= ~(1 << i); |
| 1961 | win_protect |= 3 << (2 * i); |
| 1962 | } |
| 1963 | |
| 1964 | writel(win_enable, base + WINDOW_BAR_ENABLE); |
| 1965 | msp->win_protect = win_protect; |
| 1966 | } |
| 1967 | |
| 1968 | static int mv643xx_eth_shared_probe(struct platform_device *pdev) |
| 1969 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1970 | static int mv643xx_eth_version_printed = 0; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1971 | struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1972 | struct mv643xx_eth_shared_private *msp; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1973 | struct resource *res; |
| 1974 | int ret; |
| 1975 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 1976 | if (!mv643xx_eth_version_printed++) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1977 | printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n"); |
| 1978 | |
| 1979 | ret = -EINVAL; |
| 1980 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1981 | if (res == NULL) |
| 1982 | goto out; |
| 1983 | |
| 1984 | ret = -ENOMEM; |
| 1985 | msp = kmalloc(sizeof(*msp), GFP_KERNEL); |
| 1986 | if (msp == NULL) |
| 1987 | goto out; |
| 1988 | memset(msp, 0, sizeof(*msp)); |
| 1989 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 1990 | msp->base = ioremap(res->start, res->end - res->start + 1); |
| 1991 | if (msp->base == NULL) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1992 | goto out_free; |
| 1993 | |
| 1994 | spin_lock_init(&msp->phy_lock); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1995 | |
| 1996 | /* |
| 1997 | * (Re-)program MBUS remapping windows if we are asked to. |
| 1998 | */ |
| 1999 | if (pd != NULL && pd->dram != NULL) |
| 2000 | mv643xx_eth_conf_mbus_windows(msp, pd->dram); |
| 2001 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2002 | /* |
| 2003 | * Detect hardware parameters. |
| 2004 | */ |
| 2005 | msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; |
| 2006 | |
| 2007 | platform_set_drvdata(pdev, msp); |
| 2008 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2009 | return 0; |
| 2010 | |
| 2011 | out_free: |
| 2012 | kfree(msp); |
| 2013 | out: |
| 2014 | return ret; |
| 2015 | } |
| 2016 | |
| 2017 | static int mv643xx_eth_shared_remove(struct platform_device *pdev) |
| 2018 | { |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2019 | struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2020 | |
Lennert Buytenhek | cc9754b | 2008-06-01 02:10:27 +0200 | [diff] [blame] | 2021 | iounmap(msp->base); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2022 | kfree(msp); |
| 2023 | |
| 2024 | return 0; |
| 2025 | } |
| 2026 | |
| 2027 | static struct platform_driver mv643xx_eth_shared_driver = { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2028 | .probe = mv643xx_eth_shared_probe, |
| 2029 | .remove = mv643xx_eth_shared_remove, |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2030 | .driver = { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2031 | .name = MV643XX_ETH_SHARED_NAME, |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2032 | .owner = THIS_MODULE, |
| 2033 | }, |
| 2034 | }; |
| 2035 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2036 | static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2037 | { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2038 | int addr_shift = 5 * mp->port_num; |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2039 | u32 data; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2040 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2041 | data = rdl(mp, PHY_ADDR); |
| 2042 | data &= ~(0x1f << addr_shift); |
| 2043 | data |= (phy_addr & 0x1f) << addr_shift; |
| 2044 | wrl(mp, PHY_ADDR, data); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2045 | } |
| 2046 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2047 | static int phy_addr_get(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2048 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2049 | unsigned int data; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2050 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2051 | data = rdl(mp, PHY_ADDR); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2052 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2053 | return (data >> (5 * mp->port_num)) & 0x1f; |
| 2054 | } |
| 2055 | |
| 2056 | static void set_params(struct mv643xx_eth_private *mp, |
| 2057 | struct mv643xx_eth_platform_data *pd) |
| 2058 | { |
| 2059 | struct net_device *dev = mp->dev; |
| 2060 | |
| 2061 | if (is_valid_ether_addr(pd->mac_addr)) |
| 2062 | memcpy(dev->dev_addr, pd->mac_addr, 6); |
| 2063 | else |
| 2064 | uc_addr_get(mp, dev->dev_addr); |
| 2065 | |
| 2066 | if (pd->phy_addr == -1) { |
| 2067 | mp->shared_smi = NULL; |
| 2068 | mp->phy_addr = -1; |
| 2069 | } else { |
| 2070 | mp->shared_smi = mp->shared; |
| 2071 | if (pd->shared_smi != NULL) |
| 2072 | mp->shared_smi = platform_get_drvdata(pd->shared_smi); |
| 2073 | |
| 2074 | if (pd->force_phy_addr || pd->phy_addr) { |
| 2075 | mp->phy_addr = pd->phy_addr & 0x3f; |
| 2076 | phy_addr_set(mp, mp->phy_addr); |
| 2077 | } else { |
| 2078 | mp->phy_addr = phy_addr_get(mp); |
| 2079 | } |
| 2080 | } |
| 2081 | |
| 2082 | mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE; |
| 2083 | if (pd->rx_queue_size) |
| 2084 | mp->default_rx_ring_size = pd->rx_queue_size; |
| 2085 | mp->rx_desc_sram_addr = pd->rx_sram_addr; |
| 2086 | mp->rx_desc_sram_size = pd->rx_sram_size; |
| 2087 | |
| 2088 | mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE; |
| 2089 | if (pd->tx_queue_size) |
| 2090 | mp->default_tx_ring_size = pd->tx_queue_size; |
| 2091 | mp->tx_desc_sram_addr = pd->tx_sram_addr; |
| 2092 | mp->tx_desc_sram_size = pd->tx_sram_size; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2093 | } |
| 2094 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2095 | static int phy_detect(struct mv643xx_eth_private *mp) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2096 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2097 | unsigned int data; |
| 2098 | unsigned int data2; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2099 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2100 | smi_reg_read(mp, mp->phy_addr, 0, &data); |
| 2101 | smi_reg_write(mp, mp->phy_addr, 0, data ^ 0x1000); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2102 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2103 | smi_reg_read(mp, mp->phy_addr, 0, &data2); |
| 2104 | if (((data ^ data2) & 0x1000) == 0) |
| 2105 | return -ENODEV; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2106 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2107 | smi_reg_write(mp, mp->phy_addr, 0, data); |
| 2108 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2109 | return 0; |
| 2110 | } |
| 2111 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2112 | static int phy_init(struct mv643xx_eth_private *mp, |
| 2113 | struct mv643xx_eth_platform_data *pd) |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2114 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2115 | struct ethtool_cmd cmd; |
| 2116 | int err; |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2117 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2118 | err = phy_detect(mp); |
| 2119 | if (err) { |
| 2120 | dev_printk(KERN_INFO, &mp->dev->dev, |
| 2121 | "no PHY detected at addr %d\n", mp->phy_addr); |
| 2122 | return err; |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2123 | } |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2124 | phy_reset(mp); |
| 2125 | |
| 2126 | mp->mii.phy_id = mp->phy_addr; |
| 2127 | mp->mii.phy_id_mask = 0x3f; |
| 2128 | mp->mii.reg_num_mask = 0x1f; |
| 2129 | mp->mii.dev = mp->dev; |
| 2130 | mp->mii.mdio_read = mv643xx_eth_mdio_read; |
| 2131 | mp->mii.mdio_write = mv643xx_eth_mdio_write; |
| 2132 | |
| 2133 | mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii); |
| 2134 | |
| 2135 | memset(&cmd, 0, sizeof(cmd)); |
| 2136 | |
| 2137 | cmd.port = PORT_MII; |
| 2138 | cmd.transceiver = XCVR_INTERNAL; |
| 2139 | cmd.phy_address = mp->phy_addr; |
| 2140 | if (pd->speed == 0) { |
| 2141 | cmd.autoneg = AUTONEG_ENABLE; |
| 2142 | cmd.speed = SPEED_100; |
| 2143 | cmd.advertising = ADVERTISED_10baseT_Half | |
| 2144 | ADVERTISED_10baseT_Full | |
| 2145 | ADVERTISED_100baseT_Half | |
| 2146 | ADVERTISED_100baseT_Full; |
| 2147 | if (mp->mii.supports_gmii) |
| 2148 | cmd.advertising |= ADVERTISED_1000baseT_Full; |
| 2149 | } else { |
| 2150 | cmd.autoneg = AUTONEG_DISABLE; |
| 2151 | cmd.speed = pd->speed; |
| 2152 | cmd.duplex = pd->duplex; |
| 2153 | } |
| 2154 | |
| 2155 | update_pscr(mp, cmd.speed, cmd.duplex); |
| 2156 | mv643xx_eth_set_settings(mp->dev, &cmd); |
| 2157 | |
| 2158 | return 0; |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2159 | } |
| 2160 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2161 | static int mv643xx_eth_probe(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | struct mv643xx_eth_platform_data *pd; |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2164 | struct mv643xx_eth_private *mp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | struct resource *res; |
Al Viro | c5d6471 | 2007-10-13 08:30:26 +0100 | [diff] [blame] | 2167 | DECLARE_MAC_BUF(mac); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2168 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 2170 | pd = pdev->dev.platform_data; |
| 2171 | if (pd == NULL) { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2172 | dev_printk(KERN_ERR, &pdev->dev, |
| 2173 | "no mv643xx_eth_platform_data\n"); |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 2174 | return -ENODEV; |
| 2175 | } |
| 2176 | |
Lennert Buytenhek | fa3959f | 2008-04-24 01:27:02 +0200 | [diff] [blame] | 2177 | if (pd->shared == NULL) { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2178 | dev_printk(KERN_ERR, &pdev->dev, |
| 2179 | "no mv643xx_eth_platform_data->shared\n"); |
Lennert Buytenhek | fa3959f | 2008-04-24 01:27:02 +0200 | [diff] [blame] | 2180 | return -ENODEV; |
| 2181 | } |
| 2182 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2183 | dev = alloc_etherdev(sizeof(struct mv643xx_eth_private)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | if (!dev) |
| 2185 | return -ENOMEM; |
| 2186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | mp = netdev_priv(dev); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2188 | platform_set_drvdata(pdev, mp); |
| 2189 | |
| 2190 | mp->shared = platform_get_drvdata(pd->shared); |
| 2191 | mp->port_num = pd->port_number; |
| 2192 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2193 | mp->dev = dev; |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2194 | #ifdef MV643XX_ETH_NAPI |
| 2195 | netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2196 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2197 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2198 | set_params(mp, pd); |
| 2199 | |
| 2200 | spin_lock_init(&mp->lock); |
| 2201 | |
| 2202 | mib_counters_clear(mp); |
| 2203 | INIT_WORK(&mp->tx_timeout_task, tx_timeout_task); |
| 2204 | |
| 2205 | err = phy_init(mp, pd); |
| 2206 | if (err) |
| 2207 | goto out; |
| 2208 | SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); |
| 2209 | |
| 2210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 2212 | BUG_ON(!res); |
| 2213 | dev->irq = res->start; |
| 2214 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2215 | dev->hard_start_xmit = mv643xx_eth_xmit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2216 | dev->open = mv643xx_eth_open; |
| 2217 | dev->stop = mv643xx_eth_stop; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2218 | dev->set_multicast_list = mv643xx_eth_set_rx_mode; |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2219 | dev->set_mac_address = mv643xx_eth_set_mac_address; |
| 2220 | dev->do_ioctl = mv643xx_eth_ioctl; |
| 2221 | dev->change_mtu = mv643xx_eth_change_mtu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | dev->tx_timeout = mv643xx_eth_tx_timeout; |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 2223 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2224 | dev->poll_controller = mv643xx_eth_netpoll; |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 2225 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2226 | dev->watchdog_timeo = 2 * HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2227 | dev->base_addr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2229 | #ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | /* |
| 2231 | * Zero copy can only work if we use Discovery II memory. Else, we will |
| 2232 | * have to map the buffers to ISA memory which is only 16 MB |
| 2233 | */ |
Wolfram Joost | 6389057 | 2006-01-16 16:57:41 -0700 | [diff] [blame] | 2234 | dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | #endif |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 2236 | |
Olaf Hering | b0b8dab | 2006-04-27 18:23:49 -0700 | [diff] [blame] | 2237 | SET_NETDEV_DEV(dev, &pdev->dev); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2238 | |
| 2239 | if (mp->shared->win_protect) |
| 2240 | wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect); |
| 2241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | err = register_netdev(dev); |
| 2243 | if (err) |
| 2244 | goto out; |
| 2245 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2246 | dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n", |
| 2247 | mp->port_num, print_mac(mac, dev->dev_addr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | |
| 2249 | if (dev->features & NETIF_F_SG) |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2250 | dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | |
| 2252 | if (dev->features & NETIF_F_IP_CSUM) |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2253 | dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2255 | #ifdef MV643XX_ETH_NAPI |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2256 | dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2257 | #endif |
| 2258 | |
Lennert Buytenhek | 13d6428 | 2008-06-01 20:51:22 +0200 | [diff] [blame] | 2259 | if (mp->tx_desc_sram_size > 0) |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2260 | dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n"); |
Nicolas DET | b152987 | 2005-10-28 17:46:30 -0700 | [diff] [blame] | 2261 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2262 | return 0; |
| 2263 | |
| 2264 | out: |
| 2265 | free_netdev(dev); |
| 2266 | |
| 2267 | return err; |
| 2268 | } |
| 2269 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2270 | static int mv643xx_eth_remove(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2271 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2272 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2273 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2274 | unregister_netdev(mp->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2275 | flush_scheduled_work(); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2276 | free_netdev(mp->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2277 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2278 | platform_set_drvdata(pdev, NULL); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2279 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | return 0; |
| 2281 | } |
| 2282 | |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 2283 | static void mv643xx_eth_shutdown(struct platform_device *pdev) |
| 2284 | { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2285 | struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 2286 | |
| 2287 | /* Mask all interrupts on ethernet port */ |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2288 | wrl(mp, INT_MASK(mp->port_num), 0); |
| 2289 | rdl(mp, INT_MASK(mp->port_num)); |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 2290 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2291 | if (netif_running(mp->dev)) |
| 2292 | port_reset(mp); |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 2293 | } |
| 2294 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2295 | static struct platform_driver mv643xx_eth_driver = { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2296 | .probe = mv643xx_eth_probe, |
| 2297 | .remove = mv643xx_eth_remove, |
| 2298 | .shutdown = mv643xx_eth_shutdown, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2299 | .driver = { |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2300 | .name = MV643XX_ETH_NAME, |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 2301 | .owner = THIS_MODULE, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2302 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2303 | }; |
| 2304 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2305 | static int __init mv643xx_eth_init_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | { |
| 2307 | int rc; |
| 2308 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2309 | rc = platform_driver_register(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | if (!rc) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2311 | rc = platform_driver_register(&mv643xx_eth_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | if (rc) |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2313 | platform_driver_unregister(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2314 | } |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | return rc; |
| 2317 | } |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2318 | module_init(mv643xx_eth_init_module); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2320 | static void __exit mv643xx_eth_cleanup_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2321 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2322 | platform_driver_unregister(&mv643xx_eth_driver); |
| 2323 | platform_driver_unregister(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2324 | } |
Lennert Buytenhek | e537149 | 2008-06-01 02:18:13 +0200 | [diff] [blame] | 2325 | module_exit(mv643xx_eth_cleanup_module); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2326 | |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2327 | MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani " |
| 2328 | "and Dale Farnsworth"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2330 | MODULE_LICENSE("GPL"); |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 2331 | MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); |
Lennert Buytenhek | fc32b0e | 2008-06-02 00:28:40 +0200 | [diff] [blame] | 2332 | MODULE_ALIAS("platform:" MV643XX_ETH_NAME); |