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 | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 57 | static char mv643xx_driver_name[] = "mv643xx_eth"; |
| 58 | static char mv643xx_driver_version[] = "1.0"; |
| 59 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 60 | #define MV643XX_CHECKSUM_OFFLOAD_TX |
| 61 | #define MV643XX_NAPI |
| 62 | #define MV643XX_TX_FAST_REFILL |
| 63 | #undef MV643XX_COAL |
| 64 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 65 | #define MV643XX_TX_COAL 100 |
| 66 | #ifdef MV643XX_COAL |
| 67 | #define MV643XX_RX_COAL 100 |
| 68 | #endif |
| 69 | |
| 70 | #ifdef MV643XX_CHECKSUM_OFFLOAD_TX |
| 71 | #define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1) |
| 72 | #else |
| 73 | #define MAX_DESCS_PER_SKB 1 |
| 74 | #endif |
| 75 | |
| 76 | #define ETH_VLAN_HLEN 4 |
| 77 | #define ETH_FCS_LEN 4 |
| 78 | #define ETH_HW_IP_ALIGN 2 /* hw aligns IP header */ |
| 79 | #define ETH_WRAPPER_LEN (ETH_HW_IP_ALIGN + ETH_HLEN + \ |
| 80 | ETH_VLAN_HLEN + ETH_FCS_LEN) |
| 81 | #define ETH_RX_SKB_SIZE (dev->mtu + ETH_WRAPPER_LEN + \ |
| 82 | dma_get_cache_alignment()) |
| 83 | |
| 84 | /* |
| 85 | * Registers shared between all ports. |
| 86 | */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 87 | #define PHY_ADDR 0x0000 |
| 88 | #define SMI_REG 0x0004 |
| 89 | #define WINDOW_BASE(w) (0x0200 + ((w) << 3)) |
| 90 | #define WINDOW_SIZE(w) (0x0204 + ((w) << 3)) |
| 91 | #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2)) |
| 92 | #define WINDOW_BAR_ENABLE 0x0290 |
| 93 | #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4)) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 94 | |
| 95 | /* |
| 96 | * Per-port registers. |
| 97 | */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 98 | #define PORT_CONFIG(p) (0x0400 + ((p) << 10)) |
| 99 | #define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10)) |
| 100 | #define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10)) |
| 101 | #define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10)) |
| 102 | #define SDMA_CONFIG(p) (0x041c + ((p) << 10)) |
| 103 | #define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10)) |
| 104 | #define PORT_STATUS(p) (0x0444 + ((p) << 10)) |
| 105 | #define TXQ_COMMAND(p) (0x0448 + ((p) << 10)) |
| 106 | #define TX_BW_MTU(p) (0x0458 + ((p) << 10)) |
| 107 | #define INT_CAUSE(p) (0x0460 + ((p) << 10)) |
| 108 | #define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10)) |
| 109 | #define INT_MASK(p) (0x0468 + ((p) << 10)) |
| 110 | #define INT_MASK_EXT(p) (0x046c + ((p) << 10)) |
| 111 | #define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10)) |
| 112 | #define RXQ_CURRENT_DESC_PTR(p) (0x060c + ((p) << 10)) |
| 113 | #define RXQ_COMMAND(p) (0x0680 + ((p) << 10)) |
| 114 | #define TXQ_CURRENT_DESC_PTR(p) (0x06c0 + ((p) << 10)) |
| 115 | #define MIB_COUNTERS(p) (0x1000 + ((p) << 7)) |
| 116 | #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10)) |
| 117 | #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10)) |
| 118 | #define UNICAST_TABLE(p) (0x1600 + ((p) << 10)) |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 119 | |
| 120 | /* These macros describe Ethernet Port configuration reg (Px_cR) bits */ |
| 121 | #define UNICAST_NORMAL_MODE (0 << 0) |
| 122 | #define UNICAST_PROMISCUOUS_MODE (1 << 0) |
| 123 | #define DEFAULT_RX_QUEUE(queue) ((queue) << 1) |
| 124 | #define DEFAULT_RX_ARP_QUEUE(queue) ((queue) << 4) |
| 125 | #define RECEIVE_BC_IF_NOT_IP_OR_ARP (0 << 7) |
| 126 | #define REJECT_BC_IF_NOT_IP_OR_ARP (1 << 7) |
| 127 | #define RECEIVE_BC_IF_IP (0 << 8) |
| 128 | #define REJECT_BC_IF_IP (1 << 8) |
| 129 | #define RECEIVE_BC_IF_ARP (0 << 9) |
| 130 | #define REJECT_BC_IF_ARP (1 << 9) |
| 131 | #define TX_AM_NO_UPDATE_ERROR_SUMMARY (1 << 12) |
| 132 | #define CAPTURE_TCP_FRAMES_DIS (0 << 14) |
| 133 | #define CAPTURE_TCP_FRAMES_EN (1 << 14) |
| 134 | #define CAPTURE_UDP_FRAMES_DIS (0 << 15) |
| 135 | #define CAPTURE_UDP_FRAMES_EN (1 << 15) |
| 136 | #define DEFAULT_RX_TCP_QUEUE(queue) ((queue) << 16) |
| 137 | #define DEFAULT_RX_UDP_QUEUE(queue) ((queue) << 19) |
| 138 | #define DEFAULT_RX_BPDU_QUEUE(queue) ((queue) << 22) |
| 139 | |
| 140 | #define PORT_CONFIG_DEFAULT_VALUE \ |
| 141 | UNICAST_NORMAL_MODE | \ |
| 142 | DEFAULT_RX_QUEUE(0) | \ |
| 143 | DEFAULT_RX_ARP_QUEUE(0) | \ |
| 144 | RECEIVE_BC_IF_NOT_IP_OR_ARP | \ |
| 145 | RECEIVE_BC_IF_IP | \ |
| 146 | RECEIVE_BC_IF_ARP | \ |
| 147 | CAPTURE_TCP_FRAMES_DIS | \ |
| 148 | CAPTURE_UDP_FRAMES_DIS | \ |
| 149 | DEFAULT_RX_TCP_QUEUE(0) | \ |
| 150 | DEFAULT_RX_UDP_QUEUE(0) | \ |
| 151 | DEFAULT_RX_BPDU_QUEUE(0) |
| 152 | |
| 153 | /* These macros describe Ethernet Port configuration extend reg (Px_cXR) bits*/ |
| 154 | #define CLASSIFY_EN (1 << 0) |
| 155 | #define SPAN_BPDU_PACKETS_AS_NORMAL (0 << 1) |
| 156 | #define SPAN_BPDU_PACKETS_TO_RX_QUEUE_7 (1 << 1) |
| 157 | #define PARTITION_DISABLE (0 << 2) |
| 158 | #define PARTITION_ENABLE (1 << 2) |
| 159 | |
| 160 | #define PORT_CONFIG_EXTEND_DEFAULT_VALUE \ |
| 161 | SPAN_BPDU_PACKETS_AS_NORMAL | \ |
| 162 | PARTITION_DISABLE |
| 163 | |
| 164 | /* These macros describe Ethernet Port Sdma configuration reg (SDCR) bits */ |
| 165 | #define RIFB (1 << 0) |
| 166 | #define RX_BURST_SIZE_1_64BIT (0 << 1) |
| 167 | #define RX_BURST_SIZE_2_64BIT (1 << 1) |
| 168 | #define RX_BURST_SIZE_4_64BIT (2 << 1) |
| 169 | #define RX_BURST_SIZE_8_64BIT (3 << 1) |
| 170 | #define RX_BURST_SIZE_16_64BIT (4 << 1) |
| 171 | #define BLM_RX_NO_SWAP (1 << 4) |
| 172 | #define BLM_RX_BYTE_SWAP (0 << 4) |
| 173 | #define BLM_TX_NO_SWAP (1 << 5) |
| 174 | #define BLM_TX_BYTE_SWAP (0 << 5) |
| 175 | #define DESCRIPTORS_BYTE_SWAP (1 << 6) |
| 176 | #define DESCRIPTORS_NO_SWAP (0 << 6) |
| 177 | #define IPG_INT_RX(value) (((value) & 0x3fff) << 8) |
| 178 | #define TX_BURST_SIZE_1_64BIT (0 << 22) |
| 179 | #define TX_BURST_SIZE_2_64BIT (1 << 22) |
| 180 | #define TX_BURST_SIZE_4_64BIT (2 << 22) |
| 181 | #define TX_BURST_SIZE_8_64BIT (3 << 22) |
| 182 | #define TX_BURST_SIZE_16_64BIT (4 << 22) |
| 183 | |
| 184 | #if defined(__BIG_ENDIAN) |
| 185 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ |
| 186 | RX_BURST_SIZE_4_64BIT | \ |
| 187 | IPG_INT_RX(0) | \ |
| 188 | TX_BURST_SIZE_4_64BIT |
| 189 | #elif defined(__LITTLE_ENDIAN) |
| 190 | #define PORT_SDMA_CONFIG_DEFAULT_VALUE \ |
| 191 | RX_BURST_SIZE_4_64BIT | \ |
| 192 | BLM_RX_NO_SWAP | \ |
| 193 | BLM_TX_NO_SWAP | \ |
| 194 | IPG_INT_RX(0) | \ |
| 195 | TX_BURST_SIZE_4_64BIT |
| 196 | #else |
| 197 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined |
| 198 | #endif |
| 199 | |
| 200 | /* These macros describe Ethernet Port serial control reg (PSCR) bits */ |
| 201 | #define SERIAL_PORT_DISABLE (0 << 0) |
| 202 | #define SERIAL_PORT_ENABLE (1 << 0) |
| 203 | #define DO_NOT_FORCE_LINK_PASS (0 << 1) |
| 204 | #define FORCE_LINK_PASS (1 << 1) |
| 205 | #define ENABLE_AUTO_NEG_FOR_DUPLX (0 << 2) |
| 206 | #define DISABLE_AUTO_NEG_FOR_DUPLX (1 << 2) |
| 207 | #define ENABLE_AUTO_NEG_FOR_FLOW_CTRL (0 << 3) |
| 208 | #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3) |
| 209 | #define ADV_NO_FLOW_CTRL (0 << 4) |
| 210 | #define ADV_SYMMETRIC_FLOW_CTRL (1 << 4) |
| 211 | #define FORCE_FC_MODE_NO_PAUSE_DIS_TX (0 << 5) |
| 212 | #define FORCE_FC_MODE_TX_PAUSE_DIS (1 << 5) |
| 213 | #define FORCE_BP_MODE_NO_JAM (0 << 7) |
| 214 | #define FORCE_BP_MODE_JAM_TX (1 << 7) |
| 215 | #define FORCE_BP_MODE_JAM_TX_ON_RX_ERR (2 << 7) |
| 216 | #define SERIAL_PORT_CONTROL_RESERVED (1 << 9) |
| 217 | #define FORCE_LINK_FAIL (0 << 10) |
| 218 | #define DO_NOT_FORCE_LINK_FAIL (1 << 10) |
| 219 | #define RETRANSMIT_16_ATTEMPTS (0 << 11) |
| 220 | #define RETRANSMIT_FOREVER (1 << 11) |
| 221 | #define ENABLE_AUTO_NEG_SPEED_GMII (0 << 13) |
| 222 | #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13) |
| 223 | #define DTE_ADV_0 (0 << 14) |
| 224 | #define DTE_ADV_1 (1 << 14) |
| 225 | #define DISABLE_AUTO_NEG_BYPASS (0 << 15) |
| 226 | #define ENABLE_AUTO_NEG_BYPASS (1 << 15) |
| 227 | #define AUTO_NEG_NO_CHANGE (0 << 16) |
| 228 | #define RESTART_AUTO_NEG (1 << 16) |
| 229 | #define MAX_RX_PACKET_1518BYTE (0 << 17) |
| 230 | #define MAX_RX_PACKET_1522BYTE (1 << 17) |
| 231 | #define MAX_RX_PACKET_1552BYTE (2 << 17) |
| 232 | #define MAX_RX_PACKET_9022BYTE (3 << 17) |
| 233 | #define MAX_RX_PACKET_9192BYTE (4 << 17) |
| 234 | #define MAX_RX_PACKET_9700BYTE (5 << 17) |
| 235 | #define MAX_RX_PACKET_MASK (7 << 17) |
| 236 | #define CLR_EXT_LOOPBACK (0 << 20) |
| 237 | #define SET_EXT_LOOPBACK (1 << 20) |
| 238 | #define SET_HALF_DUPLEX_MODE (0 << 21) |
| 239 | #define SET_FULL_DUPLEX_MODE (1 << 21) |
| 240 | #define DISABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX (0 << 22) |
| 241 | #define ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX (1 << 22) |
| 242 | #define SET_GMII_SPEED_TO_10_100 (0 << 23) |
| 243 | #define SET_GMII_SPEED_TO_1000 (1 << 23) |
| 244 | #define SET_MII_SPEED_TO_10 (0 << 24) |
| 245 | #define SET_MII_SPEED_TO_100 (1 << 24) |
| 246 | |
| 247 | #define PORT_SERIAL_CONTROL_DEFAULT_VALUE \ |
| 248 | DO_NOT_FORCE_LINK_PASS | \ |
| 249 | ENABLE_AUTO_NEG_FOR_DUPLX | \ |
| 250 | DISABLE_AUTO_NEG_FOR_FLOW_CTRL | \ |
| 251 | ADV_SYMMETRIC_FLOW_CTRL | \ |
| 252 | FORCE_FC_MODE_NO_PAUSE_DIS_TX | \ |
| 253 | FORCE_BP_MODE_NO_JAM | \ |
| 254 | (1 << 9) /* reserved */ | \ |
| 255 | DO_NOT_FORCE_LINK_FAIL | \ |
| 256 | RETRANSMIT_16_ATTEMPTS | \ |
| 257 | ENABLE_AUTO_NEG_SPEED_GMII | \ |
| 258 | DTE_ADV_0 | \ |
| 259 | DISABLE_AUTO_NEG_BYPASS | \ |
| 260 | AUTO_NEG_NO_CHANGE | \ |
| 261 | MAX_RX_PACKET_9700BYTE | \ |
| 262 | CLR_EXT_LOOPBACK | \ |
| 263 | SET_FULL_DUPLEX_MODE | \ |
| 264 | ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX |
| 265 | |
| 266 | /* These macros describe Ethernet Serial Status reg (PSR) bits */ |
| 267 | #define PORT_STATUS_MODE_10_BIT (1 << 0) |
| 268 | #define PORT_STATUS_LINK_UP (1 << 1) |
| 269 | #define PORT_STATUS_FULL_DUPLEX (1 << 2) |
| 270 | #define PORT_STATUS_FLOW_CONTROL (1 << 3) |
| 271 | #define PORT_STATUS_GMII_1000 (1 << 4) |
| 272 | #define PORT_STATUS_MII_100 (1 << 5) |
| 273 | /* PSR bit 6 is undocumented */ |
| 274 | #define PORT_STATUS_TX_IN_PROGRESS (1 << 7) |
| 275 | #define PORT_STATUS_AUTONEG_BYPASSED (1 << 8) |
| 276 | #define PORT_STATUS_PARTITION (1 << 9) |
| 277 | #define PORT_STATUS_TX_FIFO_EMPTY (1 << 10) |
| 278 | /* PSR bits 11-31 are reserved */ |
| 279 | |
| 280 | #define PORT_DEFAULT_TRANSMIT_QUEUE_SIZE 800 |
| 281 | #define PORT_DEFAULT_RECEIVE_QUEUE_SIZE 400 |
| 282 | |
| 283 | #define DESC_SIZE 64 |
| 284 | |
| 285 | #define ETH_RX_QUEUES_ENABLED (1 << 0) /* use only Q0 for receive */ |
| 286 | #define ETH_TX_QUEUES_ENABLED (1 << 0) /* use only Q0 for transmit */ |
| 287 | |
| 288 | #define ETH_INT_CAUSE_RX_DONE (ETH_RX_QUEUES_ENABLED << 2) |
| 289 | #define ETH_INT_CAUSE_RX_ERROR (ETH_RX_QUEUES_ENABLED << 9) |
| 290 | #define ETH_INT_CAUSE_RX (ETH_INT_CAUSE_RX_DONE | ETH_INT_CAUSE_RX_ERROR) |
| 291 | #define ETH_INT_CAUSE_EXT 0x00000002 |
| 292 | #define ETH_INT_UNMASK_ALL (ETH_INT_CAUSE_RX | ETH_INT_CAUSE_EXT) |
| 293 | |
| 294 | #define ETH_INT_CAUSE_TX_DONE (ETH_TX_QUEUES_ENABLED << 0) |
| 295 | #define ETH_INT_CAUSE_TX_ERROR (ETH_TX_QUEUES_ENABLED << 8) |
| 296 | #define ETH_INT_CAUSE_TX (ETH_INT_CAUSE_TX_DONE | ETH_INT_CAUSE_TX_ERROR) |
| 297 | #define ETH_INT_CAUSE_PHY 0x00010000 |
| 298 | #define ETH_INT_CAUSE_STATE 0x00100000 |
| 299 | #define ETH_INT_UNMASK_ALL_EXT (ETH_INT_CAUSE_TX | ETH_INT_CAUSE_PHY | \ |
| 300 | ETH_INT_CAUSE_STATE) |
| 301 | |
| 302 | #define ETH_INT_MASK_ALL 0x00000000 |
| 303 | #define ETH_INT_MASK_ALL_EXT 0x00000000 |
| 304 | |
| 305 | #define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */ |
| 306 | #define PHY_WAIT_MICRO_SECONDS 10 |
| 307 | |
| 308 | /* Buffer offset from buffer pointer */ |
| 309 | #define RX_BUF_OFFSET 0x2 |
| 310 | |
| 311 | /* Gigabit Ethernet Unit Global Registers */ |
| 312 | |
| 313 | /* MIB Counters register definitions */ |
| 314 | #define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW 0x0 |
| 315 | #define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH 0x4 |
| 316 | #define ETH_MIB_BAD_OCTETS_RECEIVED 0x8 |
| 317 | #define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR 0xc |
| 318 | #define ETH_MIB_GOOD_FRAMES_RECEIVED 0x10 |
| 319 | #define ETH_MIB_BAD_FRAMES_RECEIVED 0x14 |
| 320 | #define ETH_MIB_BROADCAST_FRAMES_RECEIVED 0x18 |
| 321 | #define ETH_MIB_MULTICAST_FRAMES_RECEIVED 0x1c |
| 322 | #define ETH_MIB_FRAMES_64_OCTETS 0x20 |
| 323 | #define ETH_MIB_FRAMES_65_TO_127_OCTETS 0x24 |
| 324 | #define ETH_MIB_FRAMES_128_TO_255_OCTETS 0x28 |
| 325 | #define ETH_MIB_FRAMES_256_TO_511_OCTETS 0x2c |
| 326 | #define ETH_MIB_FRAMES_512_TO_1023_OCTETS 0x30 |
| 327 | #define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS 0x34 |
| 328 | #define ETH_MIB_GOOD_OCTETS_SENT_LOW 0x38 |
| 329 | #define ETH_MIB_GOOD_OCTETS_SENT_HIGH 0x3c |
| 330 | #define ETH_MIB_GOOD_FRAMES_SENT 0x40 |
| 331 | #define ETH_MIB_EXCESSIVE_COLLISION 0x44 |
| 332 | #define ETH_MIB_MULTICAST_FRAMES_SENT 0x48 |
| 333 | #define ETH_MIB_BROADCAST_FRAMES_SENT 0x4c |
| 334 | #define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED 0x50 |
| 335 | #define ETH_MIB_FC_SENT 0x54 |
| 336 | #define ETH_MIB_GOOD_FC_RECEIVED 0x58 |
| 337 | #define ETH_MIB_BAD_FC_RECEIVED 0x5c |
| 338 | #define ETH_MIB_UNDERSIZE_RECEIVED 0x60 |
| 339 | #define ETH_MIB_FRAGMENTS_RECEIVED 0x64 |
| 340 | #define ETH_MIB_OVERSIZE_RECEIVED 0x68 |
| 341 | #define ETH_MIB_JABBER_RECEIVED 0x6c |
| 342 | #define ETH_MIB_MAC_RECEIVE_ERROR 0x70 |
| 343 | #define ETH_MIB_BAD_CRC_EVENT 0x74 |
| 344 | #define ETH_MIB_COLLISION 0x78 |
| 345 | #define ETH_MIB_LATE_COLLISION 0x7c |
| 346 | |
| 347 | /* Port serial status reg (PSR) */ |
| 348 | #define ETH_INTERFACE_PCM 0x00000001 |
| 349 | #define ETH_LINK_IS_UP 0x00000002 |
| 350 | #define ETH_PORT_AT_FULL_DUPLEX 0x00000004 |
| 351 | #define ETH_RX_FLOW_CTRL_ENABLED 0x00000008 |
| 352 | #define ETH_GMII_SPEED_1000 0x00000010 |
| 353 | #define ETH_MII_SPEED_100 0x00000020 |
| 354 | #define ETH_TX_IN_PROGRESS 0x00000080 |
| 355 | #define ETH_BYPASS_ACTIVE 0x00000100 |
| 356 | #define ETH_PORT_AT_PARTITION_STATE 0x00000200 |
| 357 | #define ETH_PORT_TX_FIFO_EMPTY 0x00000400 |
| 358 | |
| 359 | /* SMI reg */ |
| 360 | #define ETH_SMI_BUSY 0x10000000 /* 0 - Write, 1 - Read */ |
| 361 | #define ETH_SMI_READ_VALID 0x08000000 /* 0 - Write, 1 - Read */ |
| 362 | #define ETH_SMI_OPCODE_WRITE 0 /* Completion of Read */ |
| 363 | #define ETH_SMI_OPCODE_READ 0x04000000 /* Operation is in progress */ |
| 364 | |
| 365 | /* Interrupt Cause Register Bit Definitions */ |
| 366 | |
| 367 | /* SDMA command status fields macros */ |
| 368 | |
| 369 | /* Tx & Rx descriptors status */ |
| 370 | #define ETH_ERROR_SUMMARY 0x00000001 |
| 371 | |
| 372 | /* Tx & Rx descriptors command */ |
| 373 | #define ETH_BUFFER_OWNED_BY_DMA 0x80000000 |
| 374 | |
| 375 | /* Tx descriptors status */ |
| 376 | #define ETH_LC_ERROR 0 |
| 377 | #define ETH_UR_ERROR 0x00000002 |
| 378 | #define ETH_RL_ERROR 0x00000004 |
| 379 | #define ETH_LLC_SNAP_FORMAT 0x00000200 |
| 380 | |
| 381 | /* Rx descriptors status */ |
| 382 | #define ETH_OVERRUN_ERROR 0x00000002 |
| 383 | #define ETH_MAX_FRAME_LENGTH_ERROR 0x00000004 |
| 384 | #define ETH_RESOURCE_ERROR 0x00000006 |
| 385 | #define ETH_VLAN_TAGGED 0x00080000 |
| 386 | #define ETH_BPDU_FRAME 0x00100000 |
| 387 | #define ETH_UDP_FRAME_OVER_IP_V_4 0x00200000 |
| 388 | #define ETH_OTHER_FRAME_TYPE 0x00400000 |
| 389 | #define ETH_LAYER_2_IS_ETH_V_2 0x00800000 |
| 390 | #define ETH_FRAME_TYPE_IP_V_4 0x01000000 |
| 391 | #define ETH_FRAME_HEADER_OK 0x02000000 |
| 392 | #define ETH_RX_LAST_DESC 0x04000000 |
| 393 | #define ETH_RX_FIRST_DESC 0x08000000 |
| 394 | #define ETH_UNKNOWN_DESTINATION_ADDR 0x10000000 |
| 395 | #define ETH_RX_ENABLE_INTERRUPT 0x20000000 |
| 396 | #define ETH_LAYER_4_CHECKSUM_OK 0x40000000 |
| 397 | |
| 398 | /* Rx descriptors byte count */ |
| 399 | #define ETH_FRAME_FRAGMENTED 0x00000004 |
| 400 | |
| 401 | /* Tx descriptors command */ |
| 402 | #define ETH_LAYER_4_CHECKSUM_FIRST_DESC 0x00000400 |
| 403 | #define ETH_FRAME_SET_TO_VLAN 0x00008000 |
| 404 | #define ETH_UDP_FRAME 0x00010000 |
| 405 | #define ETH_GEN_TCP_UDP_CHECKSUM 0x00020000 |
| 406 | #define ETH_GEN_IP_V_4_CHECKSUM 0x00040000 |
| 407 | #define ETH_ZERO_PADDING 0x00080000 |
| 408 | #define ETH_TX_LAST_DESC 0x00100000 |
| 409 | #define ETH_TX_FIRST_DESC 0x00200000 |
| 410 | #define ETH_GEN_CRC 0x00400000 |
| 411 | #define ETH_TX_ENABLE_INTERRUPT 0x00800000 |
| 412 | #define ETH_AUTO_MODE 0x40000000 |
| 413 | |
| 414 | #define ETH_TX_IHL_SHIFT 11 |
| 415 | |
| 416 | /* typedefs */ |
| 417 | |
| 418 | typedef enum _eth_func_ret_status { |
| 419 | ETH_OK, /* Returned as expected. */ |
| 420 | ETH_ERROR, /* Fundamental error. */ |
| 421 | ETH_RETRY, /* Could not process request. Try later.*/ |
| 422 | ETH_END_OF_JOB, /* Ring has nothing to process. */ |
| 423 | ETH_QUEUE_FULL, /* Ring resource error. */ |
| 424 | ETH_QUEUE_LAST_RESOURCE /* Ring resources about to exhaust. */ |
| 425 | } ETH_FUNC_RET_STATUS; |
| 426 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 427 | /* These are for big-endian machines. Little endian needs different |
| 428 | * definitions. |
| 429 | */ |
| 430 | #if defined(__BIG_ENDIAN) |
| 431 | struct eth_rx_desc { |
| 432 | u16 byte_cnt; /* Descriptor buffer byte count */ |
| 433 | u16 buf_size; /* Buffer size */ |
| 434 | u32 cmd_sts; /* Descriptor command status */ |
| 435 | u32 next_desc_ptr; /* Next descriptor pointer */ |
| 436 | u32 buf_ptr; /* Descriptor buffer pointer */ |
| 437 | }; |
| 438 | |
| 439 | struct eth_tx_desc { |
| 440 | u16 byte_cnt; /* buffer byte count */ |
| 441 | u16 l4i_chk; /* CPU provided TCP checksum */ |
| 442 | u32 cmd_sts; /* Command/status field */ |
| 443 | u32 next_desc_ptr; /* Pointer to next descriptor */ |
| 444 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ |
| 445 | }; |
| 446 | #elif defined(__LITTLE_ENDIAN) |
| 447 | struct eth_rx_desc { |
| 448 | u32 cmd_sts; /* Descriptor command status */ |
| 449 | u16 buf_size; /* Buffer size */ |
| 450 | u16 byte_cnt; /* Descriptor buffer byte count */ |
| 451 | u32 buf_ptr; /* Descriptor buffer pointer */ |
| 452 | u32 next_desc_ptr; /* Next descriptor pointer */ |
| 453 | }; |
| 454 | |
| 455 | struct eth_tx_desc { |
| 456 | u32 cmd_sts; /* Command/status field */ |
| 457 | u16 l4i_chk; /* CPU provided TCP checksum */ |
| 458 | u16 byte_cnt; /* buffer byte count */ |
| 459 | u32 buf_ptr; /* pointer to buffer for this descriptor*/ |
| 460 | u32 next_desc_ptr; /* Pointer to next descriptor */ |
| 461 | }; |
| 462 | #else |
| 463 | #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined |
| 464 | #endif |
| 465 | |
| 466 | /* Unified struct for Rx and Tx operations. The user is not required to */ |
| 467 | /* be familier with neither Tx nor Rx descriptors. */ |
| 468 | struct pkt_info { |
| 469 | unsigned short byte_cnt; /* Descriptor buffer byte count */ |
| 470 | unsigned short l4i_chk; /* Tx CPU provided TCP Checksum */ |
| 471 | unsigned int cmd_sts; /* Descriptor command status */ |
| 472 | dma_addr_t buf_ptr; /* Descriptor buffer pointer */ |
| 473 | struct sk_buff *return_info; /* User resource return information */ |
| 474 | }; |
| 475 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 476 | |
| 477 | /* global *******************************************************************/ |
| 478 | struct mv643xx_shared_private { |
| 479 | void __iomem *eth_base; |
| 480 | |
| 481 | /* used to protect SMI_REG, which is shared across ports */ |
| 482 | spinlock_t phy_lock; |
| 483 | |
| 484 | u32 win_protect; |
| 485 | |
| 486 | unsigned int t_clk; |
| 487 | }; |
| 488 | |
| 489 | |
| 490 | /* per-port *****************************************************************/ |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 491 | struct mv643xx_mib_counters { |
| 492 | u64 good_octets_received; |
| 493 | u32 bad_octets_received; |
| 494 | u32 internal_mac_transmit_err; |
| 495 | u32 good_frames_received; |
| 496 | u32 bad_frames_received; |
| 497 | u32 broadcast_frames_received; |
| 498 | u32 multicast_frames_received; |
| 499 | u32 frames_64_octets; |
| 500 | u32 frames_65_to_127_octets; |
| 501 | u32 frames_128_to_255_octets; |
| 502 | u32 frames_256_to_511_octets; |
| 503 | u32 frames_512_to_1023_octets; |
| 504 | u32 frames_1024_to_max_octets; |
| 505 | u64 good_octets_sent; |
| 506 | u32 good_frames_sent; |
| 507 | u32 excessive_collision; |
| 508 | u32 multicast_frames_sent; |
| 509 | u32 broadcast_frames_sent; |
| 510 | u32 unrec_mac_control_received; |
| 511 | u32 fc_sent; |
| 512 | u32 good_fc_received; |
| 513 | u32 bad_fc_received; |
| 514 | u32 undersize_received; |
| 515 | u32 fragments_received; |
| 516 | u32 oversize_received; |
| 517 | u32 jabber_received; |
| 518 | u32 mac_receive_error; |
| 519 | u32 bad_crc_event; |
| 520 | u32 collision; |
| 521 | u32 late_collision; |
| 522 | }; |
| 523 | |
| 524 | struct mv643xx_private { |
Lennert Buytenhek | fa3959f | 2008-04-24 01:27:02 +0200 | [diff] [blame] | 525 | struct mv643xx_shared_private *shared; |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 526 | int port_num; /* User Ethernet port number */ |
| 527 | |
Lennert Buytenhek | ce4e2e4 | 2008-04-24 01:29:59 +0200 | [diff] [blame] | 528 | struct mv643xx_shared_private *shared_smi; |
| 529 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 530 | u32 rx_sram_addr; /* Base address of rx sram area */ |
| 531 | u32 rx_sram_size; /* Size of rx sram area */ |
| 532 | u32 tx_sram_addr; /* Base address of tx sram area */ |
| 533 | u32 tx_sram_size; /* Size of tx sram area */ |
| 534 | |
| 535 | int rx_resource_err; /* Rx ring resource error flag */ |
| 536 | |
| 537 | /* Tx/Rx rings managment indexes fields. For driver use */ |
| 538 | |
| 539 | /* Next available and first returning Rx resource */ |
| 540 | int rx_curr_desc_q, rx_used_desc_q; |
| 541 | |
| 542 | /* Next available and first returning Tx resource */ |
| 543 | int tx_curr_desc_q, tx_used_desc_q; |
| 544 | |
| 545 | #ifdef MV643XX_TX_FAST_REFILL |
| 546 | u32 tx_clean_threshold; |
| 547 | #endif |
| 548 | |
| 549 | struct eth_rx_desc *p_rx_desc_area; |
| 550 | dma_addr_t rx_desc_dma; |
| 551 | int rx_desc_area_size; |
| 552 | struct sk_buff **rx_skb; |
| 553 | |
| 554 | struct eth_tx_desc *p_tx_desc_area; |
| 555 | dma_addr_t tx_desc_dma; |
| 556 | int tx_desc_area_size; |
| 557 | struct sk_buff **tx_skb; |
| 558 | |
| 559 | struct work_struct tx_timeout_task; |
| 560 | |
| 561 | struct net_device *dev; |
| 562 | struct napi_struct napi; |
| 563 | struct net_device_stats stats; |
| 564 | struct mv643xx_mib_counters mib_counters; |
| 565 | spinlock_t lock; |
| 566 | /* Size of Tx Ring per queue */ |
| 567 | int tx_ring_size; |
| 568 | /* Number of tx descriptors in use */ |
| 569 | int tx_desc_count; |
| 570 | /* Size of Rx Ring per queue */ |
| 571 | int rx_ring_size; |
| 572 | /* Number of rx descriptors in use */ |
| 573 | int rx_desc_count; |
| 574 | |
| 575 | /* |
| 576 | * Used in case RX Ring is empty, which can be caused when |
| 577 | * system does not have resources (skb's) |
| 578 | */ |
| 579 | struct timer_list timeout; |
| 580 | |
| 581 | u32 rx_int_coal; |
| 582 | u32 tx_int_coal; |
| 583 | struct mii_if_info mii; |
| 584 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | |
Lennert Buytenhek | fbd6a75 | 2007-10-19 16:03:46 +0200 | [diff] [blame] | 586 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 587 | /* port register accessors **************************************************/ |
Lennert Buytenhek | ec69d65 | 2008-03-18 11:38:05 -0700 | [diff] [blame] | 588 | static inline u32 rdl(struct mv643xx_private *mp, int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | { |
Lennert Buytenhek | fa3959f | 2008-04-24 01:27:02 +0200 | [diff] [blame] | 590 | return readl(mp->shared->eth_base + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | } |
| 592 | |
Lennert Buytenhek | ec69d65 | 2008-03-18 11:38:05 -0700 | [diff] [blame] | 593 | static inline void wrl(struct mv643xx_private *mp, int offset, u32 data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | { |
Lennert Buytenhek | fa3959f | 2008-04-24 01:27:02 +0200 | [diff] [blame] | 595 | writel(data, mp->shared->eth_base + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | } |
| 597 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 598 | |
| 599 | /* rxq/txq helper functions *************************************************/ |
| 600 | static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp, |
| 601 | unsigned int queues) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | { |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 603 | wrl(mp, RXQ_COMMAND(mp->port_num), queues); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 604 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 606 | static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp) |
| 607 | { |
| 608 | unsigned int port_num = mp->port_num; |
| 609 | u32 queues; |
Lennert Buytenhek | c0d0f2c | 2008-03-18 11:34:34 -0700 | [diff] [blame] | 610 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 611 | /* Stop Rx port activity. Check port Rx activity. */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 612 | queues = rdl(mp, RXQ_COMMAND(port_num)) & 0xFF; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 613 | if (queues) { |
| 614 | /* Issue stop command for active queues only */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 615 | wrl(mp, RXQ_COMMAND(port_num), (queues << 8)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 616 | |
| 617 | /* Wait for all Rx activity to terminate. */ |
| 618 | /* Check port cause register that all Rx queues are stopped */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 619 | while (rdl(mp, RXQ_COMMAND(port_num)) & 0xFF) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 620 | udelay(PHY_WAIT_MICRO_SECONDS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | } |
| 622 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 623 | return queues; |
| 624 | } |
| 625 | |
| 626 | static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp, |
| 627 | unsigned int queues) |
| 628 | { |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 629 | wrl(mp, TXQ_COMMAND(mp->port_num), queues); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp) |
| 633 | { |
| 634 | unsigned int port_num = mp->port_num; |
| 635 | u32 queues; |
| 636 | |
| 637 | /* Stop Tx port activity. Check port Tx activity. */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 638 | queues = rdl(mp, TXQ_COMMAND(port_num)) & 0xFF; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 639 | if (queues) { |
| 640 | /* Issue stop command for active queues only */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 641 | wrl(mp, TXQ_COMMAND(port_num), (queues << 8)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 642 | |
| 643 | /* Wait for all Tx activity to terminate. */ |
| 644 | /* Check port cause register that all Tx queues are stopped */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 645 | while (rdl(mp, TXQ_COMMAND(port_num)) & 0xFF) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 646 | udelay(PHY_WAIT_MICRO_SECONDS); |
| 647 | |
| 648 | /* Wait for Tx FIFO to empty */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 649 | while (rdl(mp, PORT_STATUS(port_num)) & ETH_PORT_TX_FIFO_EMPTY) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 650 | udelay(PHY_WAIT_MICRO_SECONDS); |
| 651 | } |
| 652 | |
| 653 | return queues; |
| 654 | } |
| 655 | |
| 656 | |
| 657 | /* rx ***********************************************************************/ |
| 658 | static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev); |
| 659 | |
| 660 | /* |
| 661 | * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring. |
| 662 | * |
| 663 | * DESCRIPTION: |
| 664 | * This routine returns a Rx buffer back to the Rx ring. It retrieves the |
| 665 | * next 'used' descriptor and attached the returned buffer to it. |
| 666 | * In case the Rx ring was in "resource error" condition, where there are |
| 667 | * no available Rx resources, the function resets the resource error flag. |
| 668 | * |
| 669 | * INPUT: |
| 670 | * struct mv643xx_private *mp Ethernet Port Control srtuct. |
| 671 | * struct pkt_info *p_pkt_info Information on returned buffer. |
| 672 | * |
| 673 | * OUTPUT: |
| 674 | * New available Rx resource in Rx descriptor ring. |
| 675 | * |
| 676 | * RETURN: |
| 677 | * ETH_ERROR in case the routine can not access Rx desc ring. |
| 678 | * ETH_OK otherwise. |
| 679 | */ |
| 680 | static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp, |
| 681 | struct pkt_info *p_pkt_info) |
| 682 | { |
| 683 | int used_rx_desc; /* Where to return Rx resource */ |
| 684 | volatile struct eth_rx_desc *p_used_rx_desc; |
| 685 | unsigned long flags; |
| 686 | |
| 687 | spin_lock_irqsave(&mp->lock, flags); |
| 688 | |
| 689 | /* Get 'used' Rx descriptor */ |
| 690 | used_rx_desc = mp->rx_used_desc_q; |
| 691 | p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc]; |
| 692 | |
| 693 | p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr; |
| 694 | p_used_rx_desc->buf_size = p_pkt_info->byte_cnt; |
| 695 | mp->rx_skb[used_rx_desc] = p_pkt_info->return_info; |
| 696 | |
| 697 | /* Flush the write pipe */ |
| 698 | |
| 699 | /* Return the descriptor to DMA ownership */ |
| 700 | wmb(); |
| 701 | p_used_rx_desc->cmd_sts = |
| 702 | ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT; |
| 703 | wmb(); |
| 704 | |
| 705 | /* Move the used descriptor pointer to the next descriptor */ |
| 706 | mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size; |
| 707 | |
| 708 | /* Any Rx return cancels the Rx resource error status */ |
| 709 | mp->rx_resource_err = 0; |
| 710 | |
| 711 | spin_unlock_irqrestore(&mp->lock, flags); |
| 712 | |
| 713 | return ETH_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | /* |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 717 | * mv643xx_eth_rx_refill_descs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | * |
| 719 | * Fills / refills RX queue on a certain gigabit ethernet port |
| 720 | * |
| 721 | * Input : pointer to ethernet interface network device structure |
| 722 | * Output : N/A |
| 723 | */ |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 724 | static void mv643xx_eth_rx_refill_descs(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | struct mv643xx_private *mp = netdev_priv(dev); |
| 727 | struct pkt_info pkt_info; |
| 728 | struct sk_buff *skb; |
Dale Farnsworth | b44cd57 | 2006-01-16 16:51:22 -0700 | [diff] [blame] | 729 | int unaligned; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 731 | while (mp->rx_desc_count < mp->rx_ring_size) { |
Ralf Baechle | 908b637 | 2007-02-26 19:52:06 +0000 | [diff] [blame] | 732 | skb = dev_alloc_skb(ETH_RX_SKB_SIZE + dma_get_cache_alignment()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | if (!skb) |
| 734 | break; |
Dale Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 735 | mp->rx_desc_count++; |
Ralf Baechle | 908b637 | 2007-02-26 19:52:06 +0000 | [diff] [blame] | 736 | unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); |
Dale Farnsworth | b44cd57 | 2006-01-16 16:51:22 -0700 | [diff] [blame] | 737 | if (unaligned) |
Ralf Baechle | 908b637 | 2007-02-26 19:52:06 +0000 | [diff] [blame] | 738 | skb_reserve(skb, dma_get_cache_alignment() - unaligned); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | pkt_info.cmd_sts = ETH_RX_ENABLE_INTERRUPT; |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 740 | pkt_info.byte_cnt = ETH_RX_SKB_SIZE; |
| 741 | pkt_info.buf_ptr = dma_map_single(NULL, skb->data, |
| 742 | ETH_RX_SKB_SIZE, DMA_FROM_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | pkt_info.return_info = skb; |
| 744 | if (eth_rx_return_buff(mp, &pkt_info) != ETH_OK) { |
| 745 | printk(KERN_ERR |
| 746 | "%s: Error allocating RX Ring\n", dev->name); |
| 747 | break; |
| 748 | } |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 749 | skb_reserve(skb, ETH_HW_IP_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | /* |
| 752 | * If RX ring is empty of SKB, set a timer to try allocating |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 753 | * again at a later time. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | */ |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 755 | if (mp->rx_desc_count == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | printk(KERN_INFO "%s: Rx ring is empty\n", dev->name); |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 757 | mp->timeout.expires = jiffies + (HZ / 10); /* 100 mSec */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | add_timer(&mp->timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | /* |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 763 | * mv643xx_eth_rx_refill_descs_timer_wrapper |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | * |
| 765 | * Timer routine to wake up RX queue filling task. This function is |
| 766 | * used only in case the RX queue is empty, and all alloc_skb has |
| 767 | * failed (due to out of memory event). |
| 768 | * |
| 769 | * Input : pointer to ethernet interface network device structure |
| 770 | * Output : N/A |
| 771 | */ |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 772 | static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | { |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 774 | mv643xx_eth_rx_refill_descs((struct net_device *)data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | /* |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 778 | * eth_port_receive - Get received information from Rx ring. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | * |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 780 | * DESCRIPTION: |
| 781 | * This routine returns the received data to the caller. There is no |
| 782 | * data copying during routine operation. All information is returned |
| 783 | * using pointer to packet information struct passed from the caller. |
| 784 | * If the routine exhausts Rx ring resources then the resource error flag |
| 785 | * is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | * |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 787 | * INPUT: |
| 788 | * struct mv643xx_private *mp Ethernet Port Control srtuct. |
| 789 | * struct pkt_info *p_pkt_info User packet buffer. |
| 790 | * |
| 791 | * OUTPUT: |
| 792 | * Rx ring current and used indexes are updated. |
| 793 | * |
| 794 | * RETURN: |
| 795 | * ETH_ERROR in case the routine can not access Rx desc ring. |
| 796 | * ETH_QUEUE_FULL if Rx ring resources are exhausted. |
| 797 | * ETH_END_OF_JOB if there is no received data. |
| 798 | * ETH_OK otherwise. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | */ |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 800 | static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp, |
| 801 | struct pkt_info *p_pkt_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | { |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 803 | int rx_next_curr_desc, rx_curr_desc, rx_used_desc; |
| 804 | volatile struct eth_rx_desc *p_rx_desc; |
| 805 | unsigned int command_status; |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 806 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 808 | /* Do not process Rx ring in case of Rx ring resource error */ |
| 809 | if (mp->rx_resource_err) |
| 810 | return ETH_QUEUE_FULL; |
Dale Farnsworth | d344bff | 2007-01-23 09:52:25 -0700 | [diff] [blame] | 811 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 812 | spin_lock_irqsave(&mp->lock, flags); |
Dale Farnsworth | d344bff | 2007-01-23 09:52:25 -0700 | [diff] [blame] | 813 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 814 | /* Get the Rx Desc ring 'curr and 'used' indexes */ |
| 815 | rx_curr_desc = mp->rx_curr_desc_q; |
| 816 | rx_used_desc = mp->rx_used_desc_q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 818 | p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc]; |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 819 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 820 | /* The following parameters are used to save readings from memory */ |
| 821 | command_status = p_rx_desc->cmd_sts; |
| 822 | rmb(); |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 823 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 824 | /* Nothing to receive... */ |
| 825 | if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) { |
Dale Farnsworth | d344bff | 2007-01-23 09:52:25 -0700 | [diff] [blame] | 826 | spin_unlock_irqrestore(&mp->lock, flags); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 827 | return ETH_END_OF_JOB; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | } |
| 829 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 830 | p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET; |
| 831 | p_pkt_info->cmd_sts = command_status; |
| 832 | p_pkt_info->buf_ptr = (p_rx_desc->buf_ptr) + RX_BUF_OFFSET; |
| 833 | p_pkt_info->return_info = mp->rx_skb[rx_curr_desc]; |
| 834 | p_pkt_info->l4i_chk = p_rx_desc->buf_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 836 | /* |
| 837 | * Clean the return info field to indicate that the |
| 838 | * packet has been moved to the upper layers |
| 839 | */ |
| 840 | mp->rx_skb[rx_curr_desc] = NULL; |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 841 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 842 | /* Update current index in data structure */ |
| 843 | rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size; |
| 844 | mp->rx_curr_desc_q = rx_next_curr_desc; |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 845 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 846 | /* Rx descriptors exhausted. Set the Rx ring resource error flag */ |
| 847 | if (rx_next_curr_desc == rx_used_desc) |
| 848 | mp->rx_resource_err = 1; |
| 849 | |
| 850 | spin_unlock_irqrestore(&mp->lock, flags); |
| 851 | |
| 852 | return ETH_OK; |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 853 | } |
| 854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | /* |
| 856 | * mv643xx_eth_receive |
| 857 | * |
| 858 | * This function is forward packets that are received from the port's |
| 859 | * queues toward kernel core or FastRoute them to another interface. |
| 860 | * |
| 861 | * Input : dev - a pointer to the required interface |
| 862 | * max - maximum number to receive (0 means unlimted) |
| 863 | * |
| 864 | * Output : number of served packets |
| 865 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | static int mv643xx_eth_receive_queue(struct net_device *dev, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | { |
| 868 | struct mv643xx_private *mp = netdev_priv(dev); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 869 | struct net_device_stats *stats = &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | unsigned int received_packets = 0; |
| 871 | struct sk_buff *skb; |
| 872 | struct pkt_info pkt_info; |
| 873 | |
Dale Farnsworth | b1dd9ca | 2005-09-01 09:59:23 -0700 | [diff] [blame] | 874 | while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) { |
Jeff Garzik | 54caf44 | 2006-09-21 00:08:10 -0400 | [diff] [blame] | 875 | dma_unmap_single(NULL, pkt_info.buf_ptr, ETH_RX_SKB_SIZE, |
Dale Farnsworth | 71d2872 | 2006-09-13 09:21:08 -0700 | [diff] [blame] | 876 | DMA_FROM_DEVICE); |
Dale Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 877 | mp->rx_desc_count--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | received_packets++; |
Dale Farnsworth | b1dd9ca | 2005-09-01 09:59:23 -0700 | [diff] [blame] | 879 | |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 880 | /* |
| 881 | * Update statistics. |
| 882 | * Note byte count includes 4 byte CRC count |
| 883 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | stats->rx_packets++; |
| 885 | stats->rx_bytes += pkt_info.byte_cnt; |
| 886 | skb = pkt_info.return_info; |
| 887 | /* |
| 888 | * In case received a packet without first / last bits on OR |
| 889 | * the error summary bit is on, the packets needs to be dropeed. |
| 890 | */ |
| 891 | if (((pkt_info.cmd_sts |
| 892 | & (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) != |
| 893 | (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) |
| 894 | || (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)) { |
| 895 | stats->rx_dropped++; |
| 896 | if ((pkt_info.cmd_sts & (ETH_RX_FIRST_DESC | |
| 897 | ETH_RX_LAST_DESC)) != |
| 898 | (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) { |
| 899 | if (net_ratelimit()) |
| 900 | printk(KERN_ERR |
| 901 | "%s: Received packet spread " |
| 902 | "on multiple descriptors\n", |
| 903 | dev->name); |
| 904 | } |
| 905 | if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY) |
| 906 | stats->rx_errors++; |
| 907 | |
| 908 | dev_kfree_skb_irq(skb); |
| 909 | } else { |
| 910 | /* |
| 911 | * The -4 is for the CRC in the trailer of the |
| 912 | * received packet |
| 913 | */ |
| 914 | skb_put(skb, pkt_info.byte_cnt - 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | |
| 916 | if (pkt_info.cmd_sts & ETH_LAYER_4_CHECKSUM_OK) { |
| 917 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 918 | skb->csum = htons( |
| 919 | (pkt_info.cmd_sts & 0x0007fff8) >> 3); |
| 920 | } |
| 921 | skb->protocol = eth_type_trans(skb, dev); |
| 922 | #ifdef MV643XX_NAPI |
| 923 | netif_receive_skb(skb); |
| 924 | #else |
| 925 | netif_rx(skb); |
| 926 | #endif |
| 927 | } |
Paolo Galtieri | 12ad74f | 2006-01-27 01:03:38 -0700 | [diff] [blame] | 928 | dev->last_rx = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | } |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 930 | mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | |
| 932 | return received_packets; |
| 933 | } |
| 934 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | #ifdef MV643XX_NAPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | /* |
| 937 | * mv643xx_poll |
| 938 | * |
| 939 | * This function is used in case of NAPI |
| 940 | */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 941 | static int mv643xx_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 943 | struct mv643xx_private *mp = container_of(napi, struct mv643xx_private, napi); |
| 944 | struct net_device *dev = mp->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | unsigned int port_num = mp->port_num; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 946 | int work_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | |
| 948 | #ifdef MV643XX_TX_FAST_REFILL |
| 949 | if (++mp->tx_clean_threshold > 5) { |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 950 | mv643xx_eth_free_completed_tx_descs(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | mp->tx_clean_threshold = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | } |
| 953 | #endif |
| 954 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 955 | work_done = 0; |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 956 | if ((rdl(mp, RXQ_CURRENT_DESC_PTR(port_num))) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 957 | != (u32) mp->rx_used_desc_q) |
| 958 | work_done = mv643xx_eth_receive_queue(dev, budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 960 | if (work_done < budget) { |
| 961 | netif_rx_complete(dev, napi); |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 962 | wrl(mp, INT_CAUSE(port_num), 0); |
| 963 | wrl(mp, INT_CAUSE_EXT(port_num), 0); |
| 964 | wrl(mp, INT_MASK(port_num), ETH_INT_UNMASK_ALL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | } |
| 966 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 967 | return work_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | } |
| 969 | #endif |
| 970 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 971 | |
| 972 | /* tx ***********************************************************************/ |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 973 | /** |
| 974 | * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments |
| 975 | * |
| 976 | * Hardware can't handle unaligned fragments smaller than 9 bytes. |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 977 | * This helper function detects that case. |
| 978 | */ |
| 979 | |
| 980 | static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) |
| 981 | { |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 982 | unsigned int frag; |
| 983 | skb_frag_t *fragp; |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 984 | |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 985 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { |
| 986 | fragp = &skb_shinfo(skb)->frags[frag]; |
| 987 | if (fragp->size <= 8 && fragp->page_offset & 0x7) |
| 988 | return 1; |
| 989 | } |
| 990 | return 0; |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 991 | } |
| 992 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 993 | /** |
| 994 | * eth_alloc_tx_desc_index - return the index of the next available tx desc |
| 995 | */ |
| 996 | static int eth_alloc_tx_desc_index(struct mv643xx_private *mp) |
| 997 | { |
| 998 | int tx_desc_curr; |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 999 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1000 | BUG_ON(mp->tx_desc_count >= mp->tx_ring_size); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1001 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1002 | tx_desc_curr = mp->tx_curr_desc_q; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1003 | mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size; |
| 1004 | |
| 1005 | BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q); |
| 1006 | |
| 1007 | return tx_desc_curr; |
| 1008 | } |
| 1009 | |
| 1010 | /** |
| 1011 | * eth_tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | * |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1013 | * Ensure the data for each fragment to be transmitted is mapped properly, |
| 1014 | * then fill in descriptors in the tx hw queue. |
| 1015 | */ |
| 1016 | static void eth_tx_fill_frag_descs(struct mv643xx_private *mp, |
| 1017 | struct sk_buff *skb) |
| 1018 | { |
| 1019 | int frag; |
| 1020 | int tx_index; |
| 1021 | struct eth_tx_desc *desc; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1022 | |
| 1023 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { |
| 1024 | skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag]; |
| 1025 | |
| 1026 | tx_index = eth_alloc_tx_desc_index(mp); |
| 1027 | desc = &mp->p_tx_desc_area[tx_index]; |
| 1028 | |
| 1029 | desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA; |
| 1030 | /* Last Frag enables interrupt and frees the skb */ |
| 1031 | if (frag == (skb_shinfo(skb)->nr_frags - 1)) { |
| 1032 | desc->cmd_sts |= ETH_ZERO_PADDING | |
| 1033 | ETH_TX_LAST_DESC | |
| 1034 | ETH_TX_ENABLE_INTERRUPT; |
| 1035 | mp->tx_skb[tx_index] = skb; |
| 1036 | } else |
Al Viro | 0598077 | 2006-05-30 23:59:09 -0400 | [diff] [blame] | 1037 | mp->tx_skb[tx_index] = NULL; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1038 | |
| 1039 | desc = &mp->p_tx_desc_area[tx_index]; |
| 1040 | desc->l4i_chk = 0; |
| 1041 | desc->byte_cnt = this_frag->size; |
| 1042 | desc->buf_ptr = dma_map_page(NULL, this_frag->page, |
| 1043 | this_frag->page_offset, |
| 1044 | this_frag->size, |
| 1045 | DMA_TO_DEVICE); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1046 | } |
| 1047 | } |
| 1048 | |
Byron Bradley | 324ff2c | 2008-02-04 23:47:15 -0800 | [diff] [blame] | 1049 | static inline __be16 sum16_as_be(__sum16 sum) |
| 1050 | { |
| 1051 | return (__force __be16)sum; |
| 1052 | } |
| 1053 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1054 | /** |
| 1055 | * eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | * |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1057 | * Ensure the data for an skb to be transmitted is mapped properly, |
| 1058 | * then fill in descriptors in the tx hw queue and start the hardware. |
| 1059 | */ |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1060 | static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp, |
| 1061 | struct sk_buff *skb) |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1062 | { |
| 1063 | int tx_index; |
| 1064 | struct eth_tx_desc *desc; |
| 1065 | u32 cmd_sts; |
| 1066 | int length; |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1067 | int nr_frags = skb_shinfo(skb)->nr_frags; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1068 | |
| 1069 | cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA; |
| 1070 | |
| 1071 | tx_index = eth_alloc_tx_desc_index(mp); |
| 1072 | desc = &mp->p_tx_desc_area[tx_index]; |
| 1073 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1074 | if (nr_frags) { |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1075 | eth_tx_fill_frag_descs(mp, skb); |
| 1076 | |
| 1077 | length = skb_headlen(skb); |
Al Viro | 0598077 | 2006-05-30 23:59:09 -0400 | [diff] [blame] | 1078 | mp->tx_skb[tx_index] = NULL; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1079 | } else { |
| 1080 | cmd_sts |= ETH_ZERO_PADDING | |
| 1081 | ETH_TX_LAST_DESC | |
| 1082 | ETH_TX_ENABLE_INTERRUPT; |
| 1083 | length = skb->len; |
| 1084 | mp->tx_skb[tx_index] = skb; |
| 1085 | } |
| 1086 | |
| 1087 | desc->byte_cnt = length; |
| 1088 | 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] | 1089 | |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 1090 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Byron Bradley | 324ff2c | 2008-02-04 23:47:15 -0800 | [diff] [blame] | 1091 | BUG_ON(skb->protocol != htons(ETH_P_IP)); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1092 | |
| 1093 | cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM | |
| 1094 | ETH_GEN_IP_V_4_CHECKSUM | |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 1095 | ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1096 | |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 1097 | switch (ip_hdr(skb)->protocol) { |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1098 | case IPPROTO_UDP: |
| 1099 | cmd_sts |= ETH_UDP_FRAME; |
Byron Bradley | 324ff2c | 2008-02-04 23:47:15 -0800 | [diff] [blame] | 1100 | desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1101 | break; |
| 1102 | case IPPROTO_TCP: |
Byron Bradley | 324ff2c | 2008-02-04 23:47:15 -0800 | [diff] [blame] | 1103 | desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1104 | break; |
| 1105 | default: |
| 1106 | BUG(); |
| 1107 | } |
| 1108 | } else { |
| 1109 | /* Errata BTS #50, IHL must be 5 if no HW checksum */ |
| 1110 | cmd_sts |= 5 << ETH_TX_IHL_SHIFT; |
| 1111 | desc->l4i_chk = 0; |
| 1112 | } |
| 1113 | |
| 1114 | /* ensure all other descriptors are written before first cmd_sts */ |
| 1115 | wmb(); |
| 1116 | desc->cmd_sts = cmd_sts; |
| 1117 | |
| 1118 | /* ensure all descriptors are written before poking hardware */ |
| 1119 | wmb(); |
Lennert Buytenhek | afdb57a | 2008-03-18 11:36:08 -0700 | [diff] [blame] | 1120 | mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1121 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1122 | mp->tx_desc_count += nr_frags + 1; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1123 | } |
| 1124 | |
| 1125 | /** |
| 1126 | * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | */ |
| 1129 | static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 1130 | { |
| 1131 | struct mv643xx_private *mp = netdev_priv(dev); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1132 | struct net_device_stats *stats = &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1135 | BUG_ON(netif_queue_stopped(dev)); |
Dale Farnsworth | 9484356 | 2006-04-11 18:24:26 -0700 | [diff] [blame] | 1136 | |
Lennert Buytenhek | 4d64e71 | 2008-03-18 11:32:41 -0700 | [diff] [blame] | 1137 | if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { |
| 1138 | stats->tx_dropped++; |
| 1139 | printk(KERN_DEBUG "%s: failed to linearize tiny " |
| 1140 | "unaligned fragment\n", dev->name); |
Lennert Buytenhek | c0d0f2c | 2008-03-18 11:34:34 -0700 | [diff] [blame] | 1141 | return NETDEV_TX_BUSY; |
Dale Farnsworth | 9484356 | 2006-04-11 18:24:26 -0700 | [diff] [blame] | 1142 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | spin_lock_irqsave(&mp->lock, flags); |
| 1145 | |
Lennert Buytenhek | 4d64e71 | 2008-03-18 11:32:41 -0700 | [diff] [blame] | 1146 | if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) { |
| 1147 | printk(KERN_ERR "%s: transmit with queue full\n", dev->name); |
| 1148 | netif_stop_queue(dev); |
| 1149 | spin_unlock_irqrestore(&mp->lock, flags); |
Lennert Buytenhek | c0d0f2c | 2008-03-18 11:34:34 -0700 | [diff] [blame] | 1150 | return NETDEV_TX_BUSY; |
Lennert Buytenhek | 4d64e71 | 2008-03-18 11:32:41 -0700 | [diff] [blame] | 1151 | } |
| 1152 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1153 | eth_tx_submit_descs_for_skb(mp, skb); |
Dale Farnsworth | e7e381f | 2007-09-14 11:23:16 -0700 | [diff] [blame] | 1154 | stats->tx_bytes += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | stats->tx_packets++; |
| 1156 | dev->trans_start = jiffies; |
| 1157 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1158 | if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) |
| 1159 | netif_stop_queue(dev); |
| 1160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | spin_unlock_irqrestore(&mp->lock, flags); |
| 1162 | |
Lennert Buytenhek | c0d0f2c | 2008-03-18 11:34:34 -0700 | [diff] [blame] | 1163 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | } |
| 1165 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1166 | |
| 1167 | /* mii management interface *************************************************/ |
| 1168 | static int ethernet_phy_get(struct mv643xx_private *mp); |
| 1169 | |
| 1170 | /* |
| 1171 | * eth_port_read_smi_reg - Read PHY registers |
| 1172 | * |
| 1173 | * DESCRIPTION: |
| 1174 | * This routine utilize the SMI interface to interact with the PHY in |
| 1175 | * order to perform PHY register read. |
| 1176 | * |
| 1177 | * INPUT: |
| 1178 | * struct mv643xx_private *mp Ethernet Port. |
| 1179 | * unsigned int phy_reg PHY register address offset. |
| 1180 | * unsigned int *value Register value buffer. |
| 1181 | * |
| 1182 | * OUTPUT: |
| 1183 | * Write the value of a specified PHY register into given buffer. |
| 1184 | * |
| 1185 | * RETURN: |
| 1186 | * false if the PHY is busy or read data is not in valid state. |
| 1187 | * true otherwise. |
| 1188 | * |
| 1189 | */ |
| 1190 | static void eth_port_read_smi_reg(struct mv643xx_private *mp, |
| 1191 | unsigned int phy_reg, unsigned int *value) |
| 1192 | { |
| 1193 | void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG; |
| 1194 | int phy_addr = ethernet_phy_get(mp); |
| 1195 | unsigned long flags; |
| 1196 | int i; |
| 1197 | |
| 1198 | /* the SMI register is a shared resource */ |
| 1199 | spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); |
| 1200 | |
| 1201 | /* wait for the SMI register to become available */ |
| 1202 | for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) { |
| 1203 | if (i == PHY_WAIT_ITERATIONS) { |
| 1204 | printk("%s: PHY busy timeout\n", mp->dev->name); |
| 1205 | goto out; |
| 1206 | } |
| 1207 | udelay(PHY_WAIT_MICRO_SECONDS); |
| 1208 | } |
| 1209 | |
| 1210 | writel((phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ, |
| 1211 | smi_reg); |
| 1212 | |
| 1213 | /* now wait for the data to be valid */ |
| 1214 | for (i = 0; !(readl(smi_reg) & ETH_SMI_READ_VALID); i++) { |
| 1215 | if (i == PHY_WAIT_ITERATIONS) { |
| 1216 | printk("%s: PHY read timeout\n", mp->dev->name); |
| 1217 | goto out; |
| 1218 | } |
| 1219 | udelay(PHY_WAIT_MICRO_SECONDS); |
| 1220 | } |
| 1221 | |
| 1222 | *value = readl(smi_reg) & 0xffff; |
| 1223 | out: |
| 1224 | spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); |
| 1225 | } |
| 1226 | |
| 1227 | /* |
| 1228 | * eth_port_write_smi_reg - Write to PHY registers |
| 1229 | * |
| 1230 | * DESCRIPTION: |
| 1231 | * This routine utilize the SMI interface to interact with the PHY in |
| 1232 | * order to perform writes to PHY registers. |
| 1233 | * |
| 1234 | * INPUT: |
| 1235 | * struct mv643xx_private *mp Ethernet Port. |
| 1236 | * unsigned int phy_reg PHY register address offset. |
| 1237 | * unsigned int value Register value. |
| 1238 | * |
| 1239 | * OUTPUT: |
| 1240 | * Write the given value to the specified PHY register. |
| 1241 | * |
| 1242 | * RETURN: |
| 1243 | * false if the PHY is busy. |
| 1244 | * true otherwise. |
| 1245 | * |
| 1246 | */ |
| 1247 | static void eth_port_write_smi_reg(struct mv643xx_private *mp, |
| 1248 | unsigned int phy_reg, unsigned int value) |
| 1249 | { |
| 1250 | void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG; |
| 1251 | int phy_addr = ethernet_phy_get(mp); |
| 1252 | unsigned long flags; |
| 1253 | int i; |
| 1254 | |
| 1255 | /* the SMI register is a shared resource */ |
| 1256 | spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); |
| 1257 | |
| 1258 | /* wait for the SMI register to become available */ |
| 1259 | for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) { |
| 1260 | if (i == PHY_WAIT_ITERATIONS) { |
| 1261 | printk("%s: PHY busy timeout\n", mp->dev->name); |
| 1262 | goto out; |
| 1263 | } |
| 1264 | udelay(PHY_WAIT_MICRO_SECONDS); |
| 1265 | } |
| 1266 | |
| 1267 | writel((phy_addr << 16) | (phy_reg << 21) | |
| 1268 | ETH_SMI_OPCODE_WRITE | (value & 0xffff), smi_reg); |
| 1269 | out: |
| 1270 | spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); |
| 1271 | } |
| 1272 | |
| 1273 | |
| 1274 | /* mib counters *************************************************************/ |
| 1275 | /* |
| 1276 | * eth_clear_mib_counters - Clear all MIB counters |
| 1277 | * |
| 1278 | * DESCRIPTION: |
| 1279 | * This function clears all MIB counters of a specific ethernet port. |
| 1280 | * A read from the MIB counter will reset the counter. |
| 1281 | * |
| 1282 | * INPUT: |
| 1283 | * struct mv643xx_private *mp Ethernet Port. |
| 1284 | * |
| 1285 | * OUTPUT: |
| 1286 | * After reading all MIB counters, the counters resets. |
| 1287 | * |
| 1288 | * RETURN: |
| 1289 | * MIB counter value. |
| 1290 | * |
| 1291 | */ |
| 1292 | static void eth_clear_mib_counters(struct mv643xx_private *mp) |
| 1293 | { |
| 1294 | unsigned int port_num = mp->port_num; |
| 1295 | int i; |
| 1296 | |
| 1297 | /* Perform dummy reads from MIB counters */ |
| 1298 | for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION; |
| 1299 | i += 4) |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1300 | rdl(mp, MIB_COUNTERS(port_num) + i); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1301 | } |
| 1302 | |
| 1303 | static inline u32 read_mib(struct mv643xx_private *mp, int offset) |
| 1304 | { |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1305 | return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1306 | } |
| 1307 | |
| 1308 | static void eth_update_mib_counters(struct mv643xx_private *mp) |
| 1309 | { |
| 1310 | struct mv643xx_mib_counters *p = &mp->mib_counters; |
| 1311 | int offset; |
| 1312 | |
| 1313 | p->good_octets_received += |
| 1314 | read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW); |
| 1315 | p->good_octets_received += |
| 1316 | (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32; |
| 1317 | |
| 1318 | for (offset = ETH_MIB_BAD_OCTETS_RECEIVED; |
| 1319 | offset <= ETH_MIB_FRAMES_1024_TO_MAX_OCTETS; |
| 1320 | offset += 4) |
| 1321 | *(u32 *)((char *)p + offset) += read_mib(mp, offset); |
| 1322 | |
| 1323 | p->good_octets_sent += read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_LOW); |
| 1324 | p->good_octets_sent += |
| 1325 | (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_HIGH) << 32; |
| 1326 | |
| 1327 | for (offset = ETH_MIB_GOOD_FRAMES_SENT; |
| 1328 | offset <= ETH_MIB_LATE_COLLISION; |
| 1329 | offset += 4) |
| 1330 | *(u32 *)((char *)p + offset) += read_mib(mp, offset); |
| 1331 | } |
| 1332 | |
| 1333 | |
| 1334 | /* ethtool ******************************************************************/ |
| 1335 | struct mv643xx_stats { |
| 1336 | char stat_string[ETH_GSTRING_LEN]; |
| 1337 | int sizeof_stat; |
| 1338 | int stat_offset; |
| 1339 | }; |
| 1340 | |
| 1341 | #define MV643XX_STAT(m) FIELD_SIZEOF(struct mv643xx_private, m), \ |
| 1342 | offsetof(struct mv643xx_private, m) |
| 1343 | |
| 1344 | static const struct mv643xx_stats mv643xx_gstrings_stats[] = { |
| 1345 | { "rx_packets", MV643XX_STAT(stats.rx_packets) }, |
| 1346 | { "tx_packets", MV643XX_STAT(stats.tx_packets) }, |
| 1347 | { "rx_bytes", MV643XX_STAT(stats.rx_bytes) }, |
| 1348 | { "tx_bytes", MV643XX_STAT(stats.tx_bytes) }, |
| 1349 | { "rx_errors", MV643XX_STAT(stats.rx_errors) }, |
| 1350 | { "tx_errors", MV643XX_STAT(stats.tx_errors) }, |
| 1351 | { "rx_dropped", MV643XX_STAT(stats.rx_dropped) }, |
| 1352 | { "tx_dropped", MV643XX_STAT(stats.tx_dropped) }, |
| 1353 | { "good_octets_received", MV643XX_STAT(mib_counters.good_octets_received) }, |
| 1354 | { "bad_octets_received", MV643XX_STAT(mib_counters.bad_octets_received) }, |
| 1355 | { "internal_mac_transmit_err", MV643XX_STAT(mib_counters.internal_mac_transmit_err) }, |
| 1356 | { "good_frames_received", MV643XX_STAT(mib_counters.good_frames_received) }, |
| 1357 | { "bad_frames_received", MV643XX_STAT(mib_counters.bad_frames_received) }, |
| 1358 | { "broadcast_frames_received", MV643XX_STAT(mib_counters.broadcast_frames_received) }, |
| 1359 | { "multicast_frames_received", MV643XX_STAT(mib_counters.multicast_frames_received) }, |
| 1360 | { "frames_64_octets", MV643XX_STAT(mib_counters.frames_64_octets) }, |
| 1361 | { "frames_65_to_127_octets", MV643XX_STAT(mib_counters.frames_65_to_127_octets) }, |
| 1362 | { "frames_128_to_255_octets", MV643XX_STAT(mib_counters.frames_128_to_255_octets) }, |
| 1363 | { "frames_256_to_511_octets", MV643XX_STAT(mib_counters.frames_256_to_511_octets) }, |
| 1364 | { "frames_512_to_1023_octets", MV643XX_STAT(mib_counters.frames_512_to_1023_octets) }, |
| 1365 | { "frames_1024_to_max_octets", MV643XX_STAT(mib_counters.frames_1024_to_max_octets) }, |
| 1366 | { "good_octets_sent", MV643XX_STAT(mib_counters.good_octets_sent) }, |
| 1367 | { "good_frames_sent", MV643XX_STAT(mib_counters.good_frames_sent) }, |
| 1368 | { "excessive_collision", MV643XX_STAT(mib_counters.excessive_collision) }, |
| 1369 | { "multicast_frames_sent", MV643XX_STAT(mib_counters.multicast_frames_sent) }, |
| 1370 | { "broadcast_frames_sent", MV643XX_STAT(mib_counters.broadcast_frames_sent) }, |
| 1371 | { "unrec_mac_control_received", MV643XX_STAT(mib_counters.unrec_mac_control_received) }, |
| 1372 | { "fc_sent", MV643XX_STAT(mib_counters.fc_sent) }, |
| 1373 | { "good_fc_received", MV643XX_STAT(mib_counters.good_fc_received) }, |
| 1374 | { "bad_fc_received", MV643XX_STAT(mib_counters.bad_fc_received) }, |
| 1375 | { "undersize_received", MV643XX_STAT(mib_counters.undersize_received) }, |
| 1376 | { "fragments_received", MV643XX_STAT(mib_counters.fragments_received) }, |
| 1377 | { "oversize_received", MV643XX_STAT(mib_counters.oversize_received) }, |
| 1378 | { "jabber_received", MV643XX_STAT(mib_counters.jabber_received) }, |
| 1379 | { "mac_receive_error", MV643XX_STAT(mib_counters.mac_receive_error) }, |
| 1380 | { "bad_crc_event", MV643XX_STAT(mib_counters.bad_crc_event) }, |
| 1381 | { "collision", MV643XX_STAT(mib_counters.collision) }, |
| 1382 | { "late_collision", MV643XX_STAT(mib_counters.late_collision) }, |
| 1383 | }; |
| 1384 | |
| 1385 | #define MV643XX_STATS_LEN ARRAY_SIZE(mv643xx_gstrings_stats) |
| 1386 | |
| 1387 | static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1388 | { |
| 1389 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1390 | int err; |
| 1391 | |
| 1392 | spin_lock_irq(&mp->lock); |
| 1393 | err = mii_ethtool_gset(&mp->mii, cmd); |
| 1394 | spin_unlock_irq(&mp->lock); |
| 1395 | |
| 1396 | /* The PHY may support 1000baseT_Half, but the mv643xx does not */ |
| 1397 | cmd->supported &= ~SUPPORTED_1000baseT_Half; |
| 1398 | cmd->advertising &= ~ADVERTISED_1000baseT_Half; |
| 1399 | |
| 1400 | return err; |
| 1401 | } |
| 1402 | |
| 1403 | static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 1404 | { |
| 1405 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1406 | int err; |
| 1407 | |
| 1408 | spin_lock_irq(&mp->lock); |
| 1409 | err = mii_ethtool_sset(&mp->mii, cmd); |
| 1410 | spin_unlock_irq(&mp->lock); |
| 1411 | |
| 1412 | return err; |
| 1413 | } |
| 1414 | |
| 1415 | static void mv643xx_get_drvinfo(struct net_device *netdev, |
| 1416 | struct ethtool_drvinfo *drvinfo) |
| 1417 | { |
| 1418 | strncpy(drvinfo->driver, mv643xx_driver_name, 32); |
| 1419 | strncpy(drvinfo->version, mv643xx_driver_version, 32); |
| 1420 | strncpy(drvinfo->fw_version, "N/A", 32); |
| 1421 | strncpy(drvinfo->bus_info, "mv643xx", 32); |
| 1422 | drvinfo->n_stats = MV643XX_STATS_LEN; |
| 1423 | } |
| 1424 | |
| 1425 | static int mv643xx_eth_nway_restart(struct net_device *dev) |
| 1426 | { |
| 1427 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1428 | |
| 1429 | return mii_nway_restart(&mp->mii); |
| 1430 | } |
| 1431 | |
| 1432 | static u32 mv643xx_eth_get_link(struct net_device *dev) |
| 1433 | { |
| 1434 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1435 | |
| 1436 | return mii_link_ok(&mp->mii); |
| 1437 | } |
| 1438 | |
| 1439 | static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset, |
| 1440 | uint8_t *data) |
| 1441 | { |
| 1442 | int i; |
| 1443 | |
| 1444 | switch(stringset) { |
| 1445 | case ETH_SS_STATS: |
| 1446 | for (i=0; i < MV643XX_STATS_LEN; i++) { |
| 1447 | memcpy(data + i * ETH_GSTRING_LEN, |
| 1448 | mv643xx_gstrings_stats[i].stat_string, |
| 1449 | ETH_GSTRING_LEN); |
| 1450 | } |
| 1451 | break; |
| 1452 | } |
| 1453 | } |
| 1454 | |
| 1455 | static void mv643xx_get_ethtool_stats(struct net_device *netdev, |
| 1456 | struct ethtool_stats *stats, uint64_t *data) |
| 1457 | { |
| 1458 | struct mv643xx_private *mp = netdev->priv; |
| 1459 | int i; |
| 1460 | |
| 1461 | eth_update_mib_counters(mp); |
| 1462 | |
| 1463 | for (i = 0; i < MV643XX_STATS_LEN; i++) { |
| 1464 | char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset; |
| 1465 | data[i] = (mv643xx_gstrings_stats[i].sizeof_stat == |
| 1466 | sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p; |
| 1467 | } |
| 1468 | } |
| 1469 | |
| 1470 | static int mv643xx_get_sset_count(struct net_device *netdev, int sset) |
| 1471 | { |
| 1472 | switch (sset) { |
| 1473 | case ETH_SS_STATS: |
| 1474 | return MV643XX_STATS_LEN; |
| 1475 | default: |
| 1476 | return -EOPNOTSUPP; |
| 1477 | } |
| 1478 | } |
| 1479 | |
| 1480 | static const struct ethtool_ops mv643xx_ethtool_ops = { |
| 1481 | .get_settings = mv643xx_get_settings, |
| 1482 | .set_settings = mv643xx_set_settings, |
| 1483 | .get_drvinfo = mv643xx_get_drvinfo, |
| 1484 | .get_link = mv643xx_eth_get_link, |
| 1485 | .set_sg = ethtool_op_set_sg, |
| 1486 | .get_sset_count = mv643xx_get_sset_count, |
| 1487 | .get_ethtool_stats = mv643xx_get_ethtool_stats, |
| 1488 | .get_strings = mv643xx_get_strings, |
| 1489 | .nway_reset = mv643xx_eth_nway_restart, |
| 1490 | }; |
| 1491 | |
| 1492 | |
| 1493 | /* address handling *********************************************************/ |
| 1494 | /* |
| 1495 | * eth_port_uc_addr_get - Read the MAC address from the port's hw registers |
| 1496 | */ |
| 1497 | static void eth_port_uc_addr_get(struct mv643xx_private *mp, |
| 1498 | unsigned char *p_addr) |
| 1499 | { |
| 1500 | unsigned int port_num = mp->port_num; |
| 1501 | unsigned int mac_h; |
| 1502 | unsigned int mac_l; |
| 1503 | |
| 1504 | mac_h = rdl(mp, MAC_ADDR_HIGH(port_num)); |
| 1505 | mac_l = rdl(mp, MAC_ADDR_LOW(port_num)); |
| 1506 | |
| 1507 | p_addr[0] = (mac_h >> 24) & 0xff; |
| 1508 | p_addr[1] = (mac_h >> 16) & 0xff; |
| 1509 | p_addr[2] = (mac_h >> 8) & 0xff; |
| 1510 | p_addr[3] = mac_h & 0xff; |
| 1511 | p_addr[4] = (mac_l >> 8) & 0xff; |
| 1512 | p_addr[5] = mac_l & 0xff; |
| 1513 | } |
| 1514 | |
| 1515 | /* |
| 1516 | * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables |
| 1517 | * |
| 1518 | * DESCRIPTION: |
| 1519 | * Go through all the DA filter tables (Unicast, Special Multicast & |
| 1520 | * Other Multicast) and set each entry to 0. |
| 1521 | * |
| 1522 | * INPUT: |
| 1523 | * struct mv643xx_private *mp Ethernet Port. |
| 1524 | * |
| 1525 | * OUTPUT: |
| 1526 | * Multicast and Unicast packets are rejected. |
| 1527 | * |
| 1528 | * RETURN: |
| 1529 | * None. |
| 1530 | */ |
| 1531 | static void eth_port_init_mac_tables(struct mv643xx_private *mp) |
| 1532 | { |
| 1533 | unsigned int port_num = mp->port_num; |
| 1534 | int table_index; |
| 1535 | |
| 1536 | /* Clear DA filter unicast table (Ex_dFUT) */ |
| 1537 | for (table_index = 0; table_index <= 0xC; table_index += 4) |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1538 | wrl(mp, UNICAST_TABLE(port_num) + table_index, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1539 | |
| 1540 | for (table_index = 0; table_index <= 0xFC; table_index += 4) { |
| 1541 | /* Clear DA filter special multicast table (Ex_dFSMT) */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1542 | wrl(mp, SPECIAL_MCAST_TABLE(port_num) + table_index, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1543 | /* Clear DA filter other multicast table (Ex_dFOMT) */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1544 | wrl(mp, OTHER_MCAST_TABLE(port_num) + table_index, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1545 | } |
| 1546 | } |
| 1547 | |
| 1548 | /* |
| 1549 | * The entries in each table are indexed by a hash of a packet's MAC |
| 1550 | * address. One bit in each entry determines whether the packet is |
| 1551 | * accepted. There are 4 entries (each 8 bits wide) in each register |
| 1552 | * of the table. The bits in each entry are defined as follows: |
| 1553 | * 0 Accept=1, Drop=0 |
| 1554 | * 3-1 Queue (ETH_Q0=0) |
| 1555 | * 7-4 Reserved = 0; |
| 1556 | */ |
| 1557 | static void eth_port_set_filter_table_entry(struct mv643xx_private *mp, |
| 1558 | int table, unsigned char entry) |
| 1559 | { |
| 1560 | unsigned int table_reg; |
| 1561 | unsigned int tbl_offset; |
| 1562 | unsigned int reg_offset; |
| 1563 | |
| 1564 | tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */ |
| 1565 | reg_offset = entry % 4; /* Entry offset within the register */ |
| 1566 | |
| 1567 | /* Set "accepts frame bit" at specified table entry */ |
| 1568 | table_reg = rdl(mp, table + tbl_offset); |
| 1569 | table_reg |= 0x01 << (8 * reg_offset); |
| 1570 | wrl(mp, table + tbl_offset, table_reg); |
| 1571 | } |
| 1572 | |
| 1573 | /* |
| 1574 | * eth_port_uc_addr_set - Write a MAC address into the port's hw registers |
| 1575 | */ |
| 1576 | static void eth_port_uc_addr_set(struct mv643xx_private *mp, |
| 1577 | unsigned char *p_addr) |
| 1578 | { |
| 1579 | unsigned int port_num = mp->port_num; |
| 1580 | unsigned int mac_h; |
| 1581 | unsigned int mac_l; |
| 1582 | int table; |
| 1583 | |
| 1584 | mac_l = (p_addr[4] << 8) | (p_addr[5]); |
| 1585 | mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) | |
| 1586 | (p_addr[3] << 0); |
| 1587 | |
| 1588 | wrl(mp, MAC_ADDR_LOW(port_num), mac_l); |
| 1589 | wrl(mp, MAC_ADDR_HIGH(port_num), mac_h); |
| 1590 | |
| 1591 | /* Accept frames with this address */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1592 | table = UNICAST_TABLE(port_num); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1593 | eth_port_set_filter_table_entry(mp, table, p_addr[5] & 0x0f); |
| 1594 | } |
| 1595 | |
| 1596 | /* |
| 1597 | * mv643xx_eth_update_mac_address |
| 1598 | * |
| 1599 | * Update the MAC address of the port in the address table |
| 1600 | * |
| 1601 | * Input : pointer to ethernet interface network device structure |
| 1602 | * Output : N/A |
| 1603 | */ |
| 1604 | static void mv643xx_eth_update_mac_address(struct net_device *dev) |
| 1605 | { |
| 1606 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1607 | |
| 1608 | eth_port_init_mac_tables(mp); |
| 1609 | eth_port_uc_addr_set(mp, dev->dev_addr); |
| 1610 | } |
| 1611 | |
| 1612 | /* |
| 1613 | * mv643xx_eth_set_mac_address |
| 1614 | * |
| 1615 | * Change the interface's mac address. |
| 1616 | * No special hardware thing should be done because interface is always |
| 1617 | * put in promiscuous mode. |
| 1618 | * |
| 1619 | * Input : pointer to ethernet interface network device structure and |
| 1620 | * a pointer to the designated entry to be added to the cache. |
| 1621 | * Output : zero upon success, negative upon failure |
| 1622 | */ |
| 1623 | static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) |
| 1624 | { |
| 1625 | int i; |
| 1626 | |
| 1627 | for (i = 0; i < 6; i++) |
| 1628 | /* +2 is for the offset of the HW addr type */ |
| 1629 | dev->dev_addr[i] = ((unsigned char *)addr)[i + 2]; |
| 1630 | mv643xx_eth_update_mac_address(dev); |
| 1631 | return 0; |
| 1632 | } |
| 1633 | |
| 1634 | /* |
| 1635 | * eth_port_mc_addr - Multicast address settings. |
| 1636 | * |
| 1637 | * The MV device supports multicast using two tables: |
| 1638 | * 1) Special Multicast Table for MAC addresses of the form |
| 1639 | * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_FF). |
| 1640 | * The MAC DA[7:0] bits are used as a pointer to the Special Multicast |
| 1641 | * Table entries in the DA-Filter table. |
| 1642 | * 2) Other Multicast Table for multicast of another type. A CRC-8bit |
| 1643 | * is used as an index to the Other Multicast Table entries in the |
| 1644 | * DA-Filter table. This function calculates the CRC-8bit value. |
| 1645 | * In either case, eth_port_set_filter_table_entry() is then called |
| 1646 | * to set to set the actual table entry. |
| 1647 | */ |
| 1648 | static void eth_port_mc_addr(struct mv643xx_private *mp, unsigned char *p_addr) |
| 1649 | { |
| 1650 | unsigned int port_num = mp->port_num; |
| 1651 | unsigned int mac_h; |
| 1652 | unsigned int mac_l; |
| 1653 | unsigned char crc_result = 0; |
| 1654 | int table; |
| 1655 | int mac_array[48]; |
| 1656 | int crc[8]; |
| 1657 | int i; |
| 1658 | |
| 1659 | if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) && |
| 1660 | (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) { |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1661 | table = SPECIAL_MCAST_TABLE(port_num); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1662 | eth_port_set_filter_table_entry(mp, table, p_addr[5]); |
| 1663 | return; |
| 1664 | } |
| 1665 | |
| 1666 | /* Calculate CRC-8 out of the given address */ |
| 1667 | mac_h = (p_addr[0] << 8) | (p_addr[1]); |
| 1668 | mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) | |
| 1669 | (p_addr[4] << 8) | (p_addr[5] << 0); |
| 1670 | |
| 1671 | for (i = 0; i < 32; i++) |
| 1672 | mac_array[i] = (mac_l >> i) & 0x1; |
| 1673 | for (i = 32; i < 48; i++) |
| 1674 | mac_array[i] = (mac_h >> (i - 32)) & 0x1; |
| 1675 | |
| 1676 | crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^ |
| 1677 | mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^ |
| 1678 | mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^ |
| 1679 | mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^ |
| 1680 | mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0]; |
| 1681 | |
| 1682 | crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^ |
| 1683 | mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^ |
| 1684 | mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^ |
| 1685 | mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^ |
| 1686 | mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^ |
| 1687 | mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^ |
| 1688 | mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0]; |
| 1689 | |
| 1690 | crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^ |
| 1691 | mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^ |
| 1692 | mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^ |
| 1693 | mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^ |
| 1694 | mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ |
| 1695 | mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0]; |
| 1696 | |
| 1697 | crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^ |
| 1698 | mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^ |
| 1699 | mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^ |
| 1700 | mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ |
| 1701 | mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^ |
| 1702 | mac_array[3] ^ mac_array[2] ^ mac_array[1]; |
| 1703 | |
| 1704 | crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^ |
| 1705 | mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^ |
| 1706 | mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^ |
| 1707 | mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^ |
| 1708 | mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^ |
| 1709 | mac_array[3] ^ mac_array[2]; |
| 1710 | |
| 1711 | crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^ |
| 1712 | mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^ |
| 1713 | mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^ |
| 1714 | mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^ |
| 1715 | mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^ |
| 1716 | mac_array[4] ^ mac_array[3]; |
| 1717 | |
| 1718 | crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^ |
| 1719 | mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^ |
| 1720 | mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^ |
| 1721 | mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^ |
| 1722 | mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^ |
| 1723 | mac_array[4]; |
| 1724 | |
| 1725 | crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^ |
| 1726 | mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^ |
| 1727 | mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^ |
| 1728 | mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^ |
| 1729 | mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5]; |
| 1730 | |
| 1731 | for (i = 0; i < 8; i++) |
| 1732 | crc_result = crc_result | (crc[i] << i); |
| 1733 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1734 | table = OTHER_MCAST_TABLE(port_num); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1735 | eth_port_set_filter_table_entry(mp, table, crc_result); |
| 1736 | } |
| 1737 | |
| 1738 | /* |
| 1739 | * Set the entire multicast list based on dev->mc_list. |
| 1740 | */ |
| 1741 | static void eth_port_set_multicast_list(struct net_device *dev) |
| 1742 | { |
| 1743 | |
| 1744 | struct dev_mc_list *mc_list; |
| 1745 | int i; |
| 1746 | int table_index; |
| 1747 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1748 | unsigned int eth_port_num = mp->port_num; |
| 1749 | |
| 1750 | /* If the device is in promiscuous mode or in all multicast mode, |
| 1751 | * we will fully populate both multicast tables with accept. |
| 1752 | * This is guaranteed to yield a match on all multicast addresses... |
| 1753 | */ |
| 1754 | if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) { |
| 1755 | for (table_index = 0; table_index <= 0xFC; table_index += 4) { |
| 1756 | /* Set all entries in DA filter special multicast |
| 1757 | * table (Ex_dFSMT) |
| 1758 | * Set for ETH_Q0 for now |
| 1759 | * Bits |
| 1760 | * 0 Accept=1, Drop=0 |
| 1761 | * 3-1 Queue ETH_Q0=0 |
| 1762 | * 7-4 Reserved = 0; |
| 1763 | */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1764 | wrl(mp, SPECIAL_MCAST_TABLE(eth_port_num) + table_index, 0x01010101); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1765 | |
| 1766 | /* Set all entries in DA filter other multicast |
| 1767 | * table (Ex_dFOMT) |
| 1768 | * Set for ETH_Q0 for now |
| 1769 | * Bits |
| 1770 | * 0 Accept=1, Drop=0 |
| 1771 | * 3-1 Queue ETH_Q0=0 |
| 1772 | * 7-4 Reserved = 0; |
| 1773 | */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1774 | wrl(mp, OTHER_MCAST_TABLE(eth_port_num) + table_index, 0x01010101); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1775 | } |
| 1776 | return; |
| 1777 | } |
| 1778 | |
| 1779 | /* We will clear out multicast tables every time we get the list. |
| 1780 | * Then add the entire new list... |
| 1781 | */ |
| 1782 | for (table_index = 0; table_index <= 0xFC; table_index += 4) { |
| 1783 | /* Clear DA filter special multicast table (Ex_dFSMT) */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1784 | wrl(mp, SPECIAL_MCAST_TABLE(eth_port_num) + table_index, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1785 | |
| 1786 | /* Clear DA filter other multicast table (Ex_dFOMT) */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1787 | wrl(mp, OTHER_MCAST_TABLE(eth_port_num) + table_index, 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1788 | } |
| 1789 | |
| 1790 | /* Get pointer to net_device multicast list and add each one... */ |
| 1791 | for (i = 0, mc_list = dev->mc_list; |
| 1792 | (i < 256) && (mc_list != NULL) && (i < dev->mc_count); |
| 1793 | i++, mc_list = mc_list->next) |
| 1794 | if (mc_list->dmi_addrlen == 6) |
| 1795 | eth_port_mc_addr(mp, mc_list->dmi_addr); |
| 1796 | } |
| 1797 | |
| 1798 | /* |
| 1799 | * mv643xx_eth_set_rx_mode |
| 1800 | * |
| 1801 | * Change from promiscuos to regular rx mode |
| 1802 | * |
| 1803 | * Input : pointer to ethernet interface network device structure |
| 1804 | * Output : N/A |
| 1805 | */ |
| 1806 | static void mv643xx_eth_set_rx_mode(struct net_device *dev) |
| 1807 | { |
| 1808 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1809 | u32 config_reg; |
| 1810 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1811 | config_reg = rdl(mp, PORT_CONFIG(mp->port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1812 | if (dev->flags & IFF_PROMISC) |
| 1813 | config_reg |= (u32) UNICAST_PROMISCUOUS_MODE; |
| 1814 | else |
| 1815 | config_reg &= ~(u32) UNICAST_PROMISCUOUS_MODE; |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 1816 | wrl(mp, PORT_CONFIG(mp->port_num), config_reg); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 1817 | |
| 1818 | eth_port_set_multicast_list(dev); |
| 1819 | } |
| 1820 | |
| 1821 | |
| 1822 | /* rx/tx queue initialisation ***********************************************/ |
| 1823 | /* |
| 1824 | * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory. |
| 1825 | * |
| 1826 | * DESCRIPTION: |
| 1827 | * This function prepares a Rx chained list of descriptors and packet |
| 1828 | * buffers in a form of a ring. The routine must be called after port |
| 1829 | * initialization routine and before port start routine. |
| 1830 | * The Ethernet SDMA engine uses CPU bus addresses to access the various |
| 1831 | * devices in the system (i.e. DRAM). This function uses the ethernet |
| 1832 | * struct 'virtual to physical' routine (set by the user) to set the ring |
| 1833 | * with physical addresses. |
| 1834 | * |
| 1835 | * INPUT: |
| 1836 | * struct mv643xx_private *mp Ethernet Port Control srtuct. |
| 1837 | * |
| 1838 | * OUTPUT: |
| 1839 | * The routine updates the Ethernet port control struct with information |
| 1840 | * regarding the Rx descriptors and buffers. |
| 1841 | * |
| 1842 | * RETURN: |
| 1843 | * None. |
| 1844 | */ |
| 1845 | static void ether_init_rx_desc_ring(struct mv643xx_private *mp) |
| 1846 | { |
| 1847 | volatile struct eth_rx_desc *p_rx_desc; |
| 1848 | int rx_desc_num = mp->rx_ring_size; |
| 1849 | int i; |
| 1850 | |
| 1851 | /* initialize the next_desc_ptr links in the Rx descriptors ring */ |
| 1852 | p_rx_desc = (struct eth_rx_desc *)mp->p_rx_desc_area; |
| 1853 | for (i = 0; i < rx_desc_num; i++) { |
| 1854 | p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma + |
| 1855 | ((i + 1) % rx_desc_num) * sizeof(struct eth_rx_desc); |
| 1856 | } |
| 1857 | |
| 1858 | /* Save Rx desc pointer to driver struct. */ |
| 1859 | mp->rx_curr_desc_q = 0; |
| 1860 | mp->rx_used_desc_q = 0; |
| 1861 | |
| 1862 | mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc); |
| 1863 | } |
| 1864 | |
| 1865 | static void mv643xx_eth_free_rx_rings(struct net_device *dev) |
| 1866 | { |
| 1867 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1868 | int curr; |
| 1869 | |
| 1870 | /* Stop RX Queues */ |
| 1871 | mv643xx_eth_port_disable_rx(mp); |
| 1872 | |
| 1873 | /* Free preallocated skb's on RX rings */ |
| 1874 | for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) { |
| 1875 | if (mp->rx_skb[curr]) { |
| 1876 | dev_kfree_skb(mp->rx_skb[curr]); |
| 1877 | mp->rx_desc_count--; |
| 1878 | } |
| 1879 | } |
| 1880 | |
| 1881 | if (mp->rx_desc_count) |
| 1882 | printk(KERN_ERR |
| 1883 | "%s: Error in freeing Rx Ring. %d skb's still" |
| 1884 | " stuck in RX Ring - ignoring them\n", dev->name, |
| 1885 | mp->rx_desc_count); |
| 1886 | /* Free RX ring */ |
| 1887 | if (mp->rx_sram_size) |
| 1888 | iounmap(mp->p_rx_desc_area); |
| 1889 | else |
| 1890 | dma_free_coherent(NULL, mp->rx_desc_area_size, |
| 1891 | mp->p_rx_desc_area, mp->rx_desc_dma); |
| 1892 | } |
| 1893 | |
| 1894 | /* |
| 1895 | * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory. |
| 1896 | * |
| 1897 | * DESCRIPTION: |
| 1898 | * This function prepares a Tx chained list of descriptors and packet |
| 1899 | * buffers in a form of a ring. The routine must be called after port |
| 1900 | * initialization routine and before port start routine. |
| 1901 | * The Ethernet SDMA engine uses CPU bus addresses to access the various |
| 1902 | * devices in the system (i.e. DRAM). This function uses the ethernet |
| 1903 | * struct 'virtual to physical' routine (set by the user) to set the ring |
| 1904 | * with physical addresses. |
| 1905 | * |
| 1906 | * INPUT: |
| 1907 | * struct mv643xx_private *mp Ethernet Port Control srtuct. |
| 1908 | * |
| 1909 | * OUTPUT: |
| 1910 | * The routine updates the Ethernet port control struct with information |
| 1911 | * regarding the Tx descriptors and buffers. |
| 1912 | * |
| 1913 | * RETURN: |
| 1914 | * None. |
| 1915 | */ |
| 1916 | static void ether_init_tx_desc_ring(struct mv643xx_private *mp) |
| 1917 | { |
| 1918 | int tx_desc_num = mp->tx_ring_size; |
| 1919 | struct eth_tx_desc *p_tx_desc; |
| 1920 | int i; |
| 1921 | |
| 1922 | /* Initialize the next_desc_ptr links in the Tx descriptors ring */ |
| 1923 | p_tx_desc = (struct eth_tx_desc *)mp->p_tx_desc_area; |
| 1924 | for (i = 0; i < tx_desc_num; i++) { |
| 1925 | p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma + |
| 1926 | ((i + 1) % tx_desc_num) * sizeof(struct eth_tx_desc); |
| 1927 | } |
| 1928 | |
| 1929 | mp->tx_curr_desc_q = 0; |
| 1930 | mp->tx_used_desc_q = 0; |
| 1931 | |
| 1932 | mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc); |
| 1933 | } |
| 1934 | |
| 1935 | /** |
| 1936 | * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors |
| 1937 | * |
| 1938 | * If force is non-zero, frees uncompleted descriptors as well |
| 1939 | */ |
| 1940 | static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force) |
| 1941 | { |
| 1942 | struct mv643xx_private *mp = netdev_priv(dev); |
| 1943 | struct eth_tx_desc *desc; |
| 1944 | u32 cmd_sts; |
| 1945 | struct sk_buff *skb; |
| 1946 | unsigned long flags; |
| 1947 | int tx_index; |
| 1948 | dma_addr_t addr; |
| 1949 | int count; |
| 1950 | int released = 0; |
| 1951 | |
| 1952 | while (mp->tx_desc_count > 0) { |
| 1953 | spin_lock_irqsave(&mp->lock, flags); |
| 1954 | |
| 1955 | /* tx_desc_count might have changed before acquiring the lock */ |
| 1956 | if (mp->tx_desc_count <= 0) { |
| 1957 | spin_unlock_irqrestore(&mp->lock, flags); |
| 1958 | return released; |
| 1959 | } |
| 1960 | |
| 1961 | tx_index = mp->tx_used_desc_q; |
| 1962 | desc = &mp->p_tx_desc_area[tx_index]; |
| 1963 | cmd_sts = desc->cmd_sts; |
| 1964 | |
| 1965 | if (!force && (cmd_sts & ETH_BUFFER_OWNED_BY_DMA)) { |
| 1966 | spin_unlock_irqrestore(&mp->lock, flags); |
| 1967 | return released; |
| 1968 | } |
| 1969 | |
| 1970 | mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size; |
| 1971 | mp->tx_desc_count--; |
| 1972 | |
| 1973 | addr = desc->buf_ptr; |
| 1974 | count = desc->byte_cnt; |
| 1975 | skb = mp->tx_skb[tx_index]; |
| 1976 | if (skb) |
| 1977 | mp->tx_skb[tx_index] = NULL; |
| 1978 | |
| 1979 | if (cmd_sts & ETH_ERROR_SUMMARY) { |
| 1980 | printk("%s: Error in TX\n", dev->name); |
| 1981 | dev->stats.tx_errors++; |
| 1982 | } |
| 1983 | |
| 1984 | spin_unlock_irqrestore(&mp->lock, flags); |
| 1985 | |
| 1986 | if (cmd_sts & ETH_TX_FIRST_DESC) |
| 1987 | dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE); |
| 1988 | else |
| 1989 | dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE); |
| 1990 | |
| 1991 | if (skb) |
| 1992 | dev_kfree_skb_irq(skb); |
| 1993 | |
| 1994 | released = 1; |
| 1995 | } |
| 1996 | |
| 1997 | return released; |
| 1998 | } |
| 1999 | |
| 2000 | static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev) |
| 2001 | { |
| 2002 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2003 | |
| 2004 | if (mv643xx_eth_free_tx_descs(dev, 0) && |
| 2005 | mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB) |
| 2006 | netif_wake_queue(dev); |
| 2007 | } |
| 2008 | |
| 2009 | static void mv643xx_eth_free_all_tx_descs(struct net_device *dev) |
| 2010 | { |
| 2011 | mv643xx_eth_free_tx_descs(dev, 1); |
| 2012 | } |
| 2013 | |
| 2014 | static void mv643xx_eth_free_tx_rings(struct net_device *dev) |
| 2015 | { |
| 2016 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2017 | |
| 2018 | /* Stop Tx Queues */ |
| 2019 | mv643xx_eth_port_disable_tx(mp); |
| 2020 | |
| 2021 | /* Free outstanding skb's on TX ring */ |
| 2022 | mv643xx_eth_free_all_tx_descs(dev); |
| 2023 | |
| 2024 | BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q); |
| 2025 | |
| 2026 | /* Free TX ring */ |
| 2027 | if (mp->tx_sram_size) |
| 2028 | iounmap(mp->p_tx_desc_area); |
| 2029 | else |
| 2030 | dma_free_coherent(NULL, mp->tx_desc_area_size, |
| 2031 | mp->p_tx_desc_area, mp->tx_desc_dma); |
| 2032 | } |
| 2033 | |
| 2034 | |
| 2035 | /* netdev ops and related ***************************************************/ |
| 2036 | static void eth_port_reset(struct mv643xx_private *mp); |
| 2037 | |
| 2038 | /* Set the mv643xx port configuration register for the speed/duplex mode. */ |
| 2039 | static void mv643xx_eth_update_pscr(struct net_device *dev, |
| 2040 | struct ethtool_cmd *ecmd) |
| 2041 | { |
| 2042 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2043 | int port_num = mp->port_num; |
| 2044 | u32 o_pscr, n_pscr; |
| 2045 | unsigned int queues; |
| 2046 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2047 | o_pscr = rdl(mp, PORT_SERIAL_CONTROL(port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2048 | n_pscr = o_pscr; |
| 2049 | |
| 2050 | /* clear speed, duplex and rx buffer size fields */ |
| 2051 | n_pscr &= ~(SET_MII_SPEED_TO_100 | |
| 2052 | SET_GMII_SPEED_TO_1000 | |
| 2053 | SET_FULL_DUPLEX_MODE | |
| 2054 | MAX_RX_PACKET_MASK); |
| 2055 | |
| 2056 | if (ecmd->duplex == DUPLEX_FULL) |
| 2057 | n_pscr |= SET_FULL_DUPLEX_MODE; |
| 2058 | |
| 2059 | if (ecmd->speed == SPEED_1000) |
| 2060 | n_pscr |= SET_GMII_SPEED_TO_1000 | |
| 2061 | MAX_RX_PACKET_9700BYTE; |
| 2062 | else { |
| 2063 | if (ecmd->speed == SPEED_100) |
| 2064 | n_pscr |= SET_MII_SPEED_TO_100; |
| 2065 | n_pscr |= MAX_RX_PACKET_1522BYTE; |
| 2066 | } |
| 2067 | |
| 2068 | if (n_pscr != o_pscr) { |
| 2069 | if ((o_pscr & SERIAL_PORT_ENABLE) == 0) |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2070 | wrl(mp, PORT_SERIAL_CONTROL(port_num), n_pscr); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2071 | else { |
| 2072 | queues = mv643xx_eth_port_disable_tx(mp); |
| 2073 | |
| 2074 | o_pscr &= ~SERIAL_PORT_ENABLE; |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2075 | wrl(mp, PORT_SERIAL_CONTROL(port_num), o_pscr); |
| 2076 | wrl(mp, PORT_SERIAL_CONTROL(port_num), n_pscr); |
| 2077 | wrl(mp, PORT_SERIAL_CONTROL(port_num), n_pscr); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2078 | if (queues) |
| 2079 | mv643xx_eth_port_enable_tx(mp, queues); |
| 2080 | } |
| 2081 | } |
| 2082 | } |
| 2083 | |
| 2084 | /* |
| 2085 | * mv643xx_eth_int_handler |
| 2086 | * |
| 2087 | * Main interrupt handler for the gigbit ethernet ports |
| 2088 | * |
| 2089 | * Input : irq - irq number (not used) |
| 2090 | * dev_id - a pointer to the required interface's data structure |
| 2091 | * regs - not used |
| 2092 | * Output : N/A |
| 2093 | */ |
| 2094 | |
| 2095 | static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id) |
| 2096 | { |
| 2097 | struct net_device *dev = (struct net_device *)dev_id; |
| 2098 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2099 | u32 eth_int_cause, eth_int_cause_ext = 0; |
| 2100 | unsigned int port_num = mp->port_num; |
| 2101 | |
| 2102 | /* Read interrupt cause registers */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2103 | eth_int_cause = rdl(mp, INT_CAUSE(port_num)) & ETH_INT_UNMASK_ALL; |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2104 | if (eth_int_cause & ETH_INT_CAUSE_EXT) { |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2105 | eth_int_cause_ext = rdl(mp, INT_CAUSE_EXT(port_num)) |
| 2106 | & ETH_INT_UNMASK_ALL_EXT; |
| 2107 | wrl(mp, INT_CAUSE_EXT(port_num), ~eth_int_cause_ext); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2108 | } |
| 2109 | |
| 2110 | /* PHY status changed */ |
| 2111 | if (eth_int_cause_ext & (ETH_INT_CAUSE_PHY | ETH_INT_CAUSE_STATE)) { |
| 2112 | struct ethtool_cmd cmd; |
| 2113 | |
| 2114 | if (mii_link_ok(&mp->mii)) { |
| 2115 | mii_ethtool_gset(&mp->mii, &cmd); |
| 2116 | mv643xx_eth_update_pscr(dev, &cmd); |
| 2117 | mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED); |
| 2118 | if (!netif_carrier_ok(dev)) { |
| 2119 | netif_carrier_on(dev); |
| 2120 | if (mp->tx_ring_size - mp->tx_desc_count >= |
| 2121 | MAX_DESCS_PER_SKB) |
| 2122 | netif_wake_queue(dev); |
| 2123 | } |
| 2124 | } else if (netif_carrier_ok(dev)) { |
| 2125 | netif_stop_queue(dev); |
| 2126 | netif_carrier_off(dev); |
| 2127 | } |
| 2128 | } |
| 2129 | |
| 2130 | #ifdef MV643XX_NAPI |
| 2131 | if (eth_int_cause & ETH_INT_CAUSE_RX) { |
| 2132 | /* schedule the NAPI poll routine to maintain port */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2133 | wrl(mp, INT_MASK(port_num), ETH_INT_MASK_ALL); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2134 | |
| 2135 | /* wait for previous write to complete */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2136 | rdl(mp, INT_MASK(port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2137 | |
| 2138 | netif_rx_schedule(dev, &mp->napi); |
| 2139 | } |
| 2140 | #else |
| 2141 | if (eth_int_cause & ETH_INT_CAUSE_RX) |
| 2142 | mv643xx_eth_receive_queue(dev, INT_MAX); |
| 2143 | #endif |
| 2144 | if (eth_int_cause_ext & ETH_INT_CAUSE_TX) |
| 2145 | mv643xx_eth_free_completed_tx_descs(dev); |
| 2146 | |
| 2147 | /* |
| 2148 | * If no real interrupt occured, exit. |
| 2149 | * This can happen when using gigE interrupt coalescing mechanism. |
| 2150 | */ |
| 2151 | if ((eth_int_cause == 0x0) && (eth_int_cause_ext == 0x0)) |
| 2152 | return IRQ_NONE; |
| 2153 | |
| 2154 | return IRQ_HANDLED; |
| 2155 | } |
| 2156 | |
| 2157 | /* |
| 2158 | * ethernet_phy_reset - Reset Ethernet port PHY. |
| 2159 | * |
| 2160 | * DESCRIPTION: |
| 2161 | * This routine utilizes the SMI interface to reset the ethernet port PHY. |
| 2162 | * |
| 2163 | * INPUT: |
| 2164 | * struct mv643xx_private *mp Ethernet Port. |
| 2165 | * |
| 2166 | * OUTPUT: |
| 2167 | * The PHY is reset. |
| 2168 | * |
| 2169 | * RETURN: |
| 2170 | * None. |
| 2171 | * |
| 2172 | */ |
| 2173 | static void ethernet_phy_reset(struct mv643xx_private *mp) |
| 2174 | { |
| 2175 | unsigned int phy_reg_data; |
| 2176 | |
| 2177 | /* Reset the PHY */ |
| 2178 | eth_port_read_smi_reg(mp, 0, &phy_reg_data); |
| 2179 | phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */ |
| 2180 | eth_port_write_smi_reg(mp, 0, phy_reg_data); |
| 2181 | |
| 2182 | /* wait for PHY to come out of reset */ |
| 2183 | do { |
| 2184 | udelay(1); |
| 2185 | eth_port_read_smi_reg(mp, 0, &phy_reg_data); |
| 2186 | } while (phy_reg_data & 0x8000); |
| 2187 | } |
| 2188 | |
| 2189 | /* |
| 2190 | * eth_port_start - Start the Ethernet port activity. |
| 2191 | * |
| 2192 | * DESCRIPTION: |
| 2193 | * This routine prepares the Ethernet port for Rx and Tx activity: |
| 2194 | * 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that |
| 2195 | * has been initialized a descriptor's ring (using |
| 2196 | * ether_init_tx_desc_ring for Tx and ether_init_rx_desc_ring for Rx) |
| 2197 | * 2. Initialize and enable the Ethernet configuration port by writing to |
| 2198 | * the port's configuration and command registers. |
| 2199 | * 3. Initialize and enable the SDMA by writing to the SDMA's |
| 2200 | * configuration and command registers. After completing these steps, |
| 2201 | * the ethernet port SDMA can starts to perform Rx and Tx activities. |
| 2202 | * |
| 2203 | * Note: Each Rx and Tx queue descriptor's list must be initialized prior |
| 2204 | * to calling this function (use ether_init_tx_desc_ring for Tx queues |
| 2205 | * and ether_init_rx_desc_ring for Rx queues). |
| 2206 | * |
| 2207 | * INPUT: |
| 2208 | * dev - a pointer to the required interface |
| 2209 | * |
| 2210 | * OUTPUT: |
| 2211 | * Ethernet port is ready to receive and transmit. |
| 2212 | * |
| 2213 | * RETURN: |
| 2214 | * None. |
| 2215 | */ |
| 2216 | static void eth_port_start(struct net_device *dev) |
| 2217 | { |
| 2218 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2219 | unsigned int port_num = mp->port_num; |
| 2220 | int tx_curr_desc, rx_curr_desc; |
| 2221 | u32 pscr; |
| 2222 | struct ethtool_cmd ethtool_cmd; |
| 2223 | |
| 2224 | /* Assignment of Tx CTRP of given queue */ |
| 2225 | tx_curr_desc = mp->tx_curr_desc_q; |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2226 | wrl(mp, TXQ_CURRENT_DESC_PTR(port_num), |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2227 | (u32)((struct eth_tx_desc *)mp->tx_desc_dma + tx_curr_desc)); |
| 2228 | |
| 2229 | /* Assignment of Rx CRDP of given queue */ |
| 2230 | rx_curr_desc = mp->rx_curr_desc_q; |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2231 | wrl(mp, RXQ_CURRENT_DESC_PTR(port_num), |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2232 | (u32)((struct eth_rx_desc *)mp->rx_desc_dma + rx_curr_desc)); |
| 2233 | |
| 2234 | /* Add the assigned Ethernet address to the port's address table */ |
| 2235 | eth_port_uc_addr_set(mp, dev->dev_addr); |
| 2236 | |
| 2237 | /* Assign port configuration and command. */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2238 | wrl(mp, PORT_CONFIG(port_num), PORT_CONFIG_DEFAULT_VALUE); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2239 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2240 | wrl(mp, PORT_CONFIG_EXT(port_num), PORT_CONFIG_EXTEND_DEFAULT_VALUE); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2241 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2242 | pscr = rdl(mp, PORT_SERIAL_CONTROL(port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2243 | |
| 2244 | pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS); |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2245 | wrl(mp, PORT_SERIAL_CONTROL(port_num), pscr); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2246 | |
| 2247 | pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL | |
| 2248 | DISABLE_AUTO_NEG_SPEED_GMII | |
| 2249 | DISABLE_AUTO_NEG_FOR_DUPLX | |
| 2250 | DO_NOT_FORCE_LINK_FAIL | |
| 2251 | SERIAL_PORT_CONTROL_RESERVED; |
| 2252 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2253 | wrl(mp, PORT_SERIAL_CONTROL(port_num), pscr); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2254 | |
| 2255 | pscr |= SERIAL_PORT_ENABLE; |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2256 | wrl(mp, PORT_SERIAL_CONTROL(port_num), pscr); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2257 | |
| 2258 | /* Assign port SDMA configuration */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2259 | wrl(mp, SDMA_CONFIG(port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2260 | |
| 2261 | /* Enable port Rx. */ |
| 2262 | mv643xx_eth_port_enable_rx(mp, ETH_RX_QUEUES_ENABLED); |
| 2263 | |
| 2264 | /* Disable port bandwidth limits by clearing MTU register */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2265 | wrl(mp, TX_BW_MTU(port_num), 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2266 | |
| 2267 | /* save phy settings across reset */ |
| 2268 | mv643xx_get_settings(dev, ðtool_cmd); |
| 2269 | ethernet_phy_reset(mp); |
| 2270 | mv643xx_set_settings(dev, ðtool_cmd); |
| 2271 | } |
| 2272 | |
| 2273 | #ifdef MV643XX_COAL |
| 2274 | |
| 2275 | /* |
| 2276 | * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path |
| 2277 | * |
| 2278 | * DESCRIPTION: |
| 2279 | * This routine sets the RX coalescing interrupt mechanism parameter. |
| 2280 | * This parameter is a timeout counter, that counts in 64 t_clk |
| 2281 | * chunks ; that when timeout event occurs a maskable interrupt |
| 2282 | * occurs. |
| 2283 | * The parameter is calculated using the tClk of the MV-643xx chip |
| 2284 | * , and the required delay of the interrupt in usec. |
| 2285 | * |
| 2286 | * INPUT: |
| 2287 | * struct mv643xx_private *mp Ethernet port |
| 2288 | * unsigned int delay Delay in usec |
| 2289 | * |
| 2290 | * OUTPUT: |
| 2291 | * Interrupt coalescing mechanism value is set in MV-643xx chip. |
| 2292 | * |
| 2293 | * RETURN: |
| 2294 | * The interrupt coalescing value set in the gigE port. |
| 2295 | * |
| 2296 | */ |
| 2297 | static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp, |
| 2298 | unsigned int delay) |
| 2299 | { |
| 2300 | unsigned int port_num = mp->port_num; |
| 2301 | unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; |
| 2302 | |
| 2303 | /* Set RX Coalescing mechanism */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2304 | wrl(mp, SDMA_CONFIG(port_num), |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2305 | ((coal & 0x3fff) << 8) | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2306 | (rdl(mp, SDMA_CONFIG(port_num)) |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2307 | & 0xffc000ff)); |
| 2308 | |
| 2309 | return coal; |
| 2310 | } |
| 2311 | #endif |
| 2312 | |
| 2313 | /* |
| 2314 | * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path |
| 2315 | * |
| 2316 | * DESCRIPTION: |
| 2317 | * This routine sets the TX coalescing interrupt mechanism parameter. |
| 2318 | * This parameter is a timeout counter, that counts in 64 t_clk |
| 2319 | * chunks ; that when timeout event occurs a maskable interrupt |
| 2320 | * occurs. |
| 2321 | * The parameter is calculated using the t_cLK frequency of the |
| 2322 | * MV-643xx chip and the required delay in the interrupt in uSec |
| 2323 | * |
| 2324 | * INPUT: |
| 2325 | * struct mv643xx_private *mp Ethernet port |
| 2326 | * unsigned int delay Delay in uSeconds |
| 2327 | * |
| 2328 | * OUTPUT: |
| 2329 | * Interrupt coalescing mechanism value is set in MV-643xx chip. |
| 2330 | * |
| 2331 | * RETURN: |
| 2332 | * The interrupt coalescing value set in the gigE port. |
| 2333 | * |
| 2334 | */ |
| 2335 | static unsigned int eth_port_set_tx_coal(struct mv643xx_private *mp, |
| 2336 | unsigned int delay) |
| 2337 | { |
| 2338 | unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; |
| 2339 | |
| 2340 | /* Set TX Coalescing mechanism */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2341 | wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), coal << 4); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2342 | |
| 2343 | return coal; |
| 2344 | } |
| 2345 | |
| 2346 | /* |
| 2347 | * eth_port_init - Initialize the Ethernet port driver |
| 2348 | * |
| 2349 | * DESCRIPTION: |
| 2350 | * This function prepares the ethernet port to start its activity: |
| 2351 | * 1) Completes the ethernet port driver struct initialization toward port |
| 2352 | * start routine. |
| 2353 | * 2) Resets the device to a quiescent state in case of warm reboot. |
| 2354 | * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM. |
| 2355 | * 4) Clean MAC tables. The reset status of those tables is unknown. |
| 2356 | * 5) Set PHY address. |
| 2357 | * Note: Call this routine prior to eth_port_start routine and after |
| 2358 | * setting user values in the user fields of Ethernet port control |
| 2359 | * struct. |
| 2360 | * |
| 2361 | * INPUT: |
| 2362 | * struct mv643xx_private *mp Ethernet port control struct |
| 2363 | * |
| 2364 | * OUTPUT: |
| 2365 | * See description. |
| 2366 | * |
| 2367 | * RETURN: |
| 2368 | * None. |
| 2369 | */ |
| 2370 | static void eth_port_init(struct mv643xx_private *mp) |
| 2371 | { |
| 2372 | mp->rx_resource_err = 0; |
| 2373 | |
| 2374 | eth_port_reset(mp); |
| 2375 | |
| 2376 | eth_port_init_mac_tables(mp); |
| 2377 | } |
| 2378 | |
| 2379 | /* |
| 2380 | * mv643xx_eth_open |
| 2381 | * |
| 2382 | * This function is called when openning the network device. The function |
| 2383 | * should initialize all the hardware, initialize cyclic Rx/Tx |
| 2384 | * descriptors chain and buffers and allocate an IRQ to the network |
| 2385 | * device. |
| 2386 | * |
| 2387 | * Input : a pointer to the network device structure |
| 2388 | * |
| 2389 | * Output : zero of success , nonzero if fails. |
| 2390 | */ |
| 2391 | |
| 2392 | static int mv643xx_eth_open(struct net_device *dev) |
| 2393 | { |
| 2394 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2395 | unsigned int port_num = mp->port_num; |
| 2396 | unsigned int size; |
| 2397 | int err; |
| 2398 | |
| 2399 | /* Clear any pending ethernet port interrupts */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2400 | wrl(mp, INT_CAUSE(port_num), 0); |
| 2401 | wrl(mp, INT_CAUSE_EXT(port_num), 0); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2402 | /* wait for previous write to complete */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2403 | rdl(mp, INT_CAUSE_EXT(port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2404 | |
| 2405 | err = request_irq(dev->irq, mv643xx_eth_int_handler, |
| 2406 | IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev); |
| 2407 | if (err) { |
| 2408 | printk(KERN_ERR "%s: Can not assign IRQ\n", dev->name); |
| 2409 | return -EAGAIN; |
| 2410 | } |
| 2411 | |
| 2412 | eth_port_init(mp); |
| 2413 | |
| 2414 | memset(&mp->timeout, 0, sizeof(struct timer_list)); |
| 2415 | mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper; |
| 2416 | mp->timeout.data = (unsigned long)dev; |
| 2417 | |
| 2418 | /* Allocate RX and TX skb rings */ |
| 2419 | mp->rx_skb = kmalloc(sizeof(*mp->rx_skb) * mp->rx_ring_size, |
| 2420 | GFP_KERNEL); |
| 2421 | if (!mp->rx_skb) { |
| 2422 | printk(KERN_ERR "%s: Cannot allocate Rx skb ring\n", dev->name); |
| 2423 | err = -ENOMEM; |
| 2424 | goto out_free_irq; |
| 2425 | } |
| 2426 | mp->tx_skb = kmalloc(sizeof(*mp->tx_skb) * mp->tx_ring_size, |
| 2427 | GFP_KERNEL); |
| 2428 | if (!mp->tx_skb) { |
| 2429 | printk(KERN_ERR "%s: Cannot allocate Tx skb ring\n", dev->name); |
| 2430 | err = -ENOMEM; |
| 2431 | goto out_free_rx_skb; |
| 2432 | } |
| 2433 | |
| 2434 | /* Allocate TX ring */ |
| 2435 | mp->tx_desc_count = 0; |
| 2436 | size = mp->tx_ring_size * sizeof(struct eth_tx_desc); |
| 2437 | mp->tx_desc_area_size = size; |
| 2438 | |
| 2439 | if (mp->tx_sram_size) { |
| 2440 | mp->p_tx_desc_area = ioremap(mp->tx_sram_addr, |
| 2441 | mp->tx_sram_size); |
| 2442 | mp->tx_desc_dma = mp->tx_sram_addr; |
| 2443 | } else |
| 2444 | mp->p_tx_desc_area = dma_alloc_coherent(NULL, size, |
| 2445 | &mp->tx_desc_dma, |
| 2446 | GFP_KERNEL); |
| 2447 | |
| 2448 | if (!mp->p_tx_desc_area) { |
| 2449 | printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n", |
| 2450 | dev->name, size); |
| 2451 | err = -ENOMEM; |
| 2452 | goto out_free_tx_skb; |
| 2453 | } |
| 2454 | BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */ |
| 2455 | memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size); |
| 2456 | |
| 2457 | ether_init_tx_desc_ring(mp); |
| 2458 | |
| 2459 | /* Allocate RX ring */ |
| 2460 | mp->rx_desc_count = 0; |
| 2461 | size = mp->rx_ring_size * sizeof(struct eth_rx_desc); |
| 2462 | mp->rx_desc_area_size = size; |
| 2463 | |
| 2464 | if (mp->rx_sram_size) { |
| 2465 | mp->p_rx_desc_area = ioremap(mp->rx_sram_addr, |
| 2466 | mp->rx_sram_size); |
| 2467 | mp->rx_desc_dma = mp->rx_sram_addr; |
| 2468 | } else |
| 2469 | mp->p_rx_desc_area = dma_alloc_coherent(NULL, size, |
| 2470 | &mp->rx_desc_dma, |
| 2471 | GFP_KERNEL); |
| 2472 | |
| 2473 | if (!mp->p_rx_desc_area) { |
| 2474 | printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n", |
| 2475 | dev->name, size); |
| 2476 | printk(KERN_ERR "%s: Freeing previously allocated TX queues...", |
| 2477 | dev->name); |
| 2478 | if (mp->rx_sram_size) |
| 2479 | iounmap(mp->p_tx_desc_area); |
| 2480 | else |
| 2481 | dma_free_coherent(NULL, mp->tx_desc_area_size, |
| 2482 | mp->p_tx_desc_area, mp->tx_desc_dma); |
| 2483 | err = -ENOMEM; |
| 2484 | goto out_free_tx_skb; |
| 2485 | } |
| 2486 | memset((void *)mp->p_rx_desc_area, 0, size); |
| 2487 | |
| 2488 | ether_init_rx_desc_ring(mp); |
| 2489 | |
| 2490 | mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */ |
| 2491 | |
| 2492 | #ifdef MV643XX_NAPI |
| 2493 | napi_enable(&mp->napi); |
| 2494 | #endif |
| 2495 | |
| 2496 | eth_port_start(dev); |
| 2497 | |
| 2498 | /* Interrupt Coalescing */ |
| 2499 | |
| 2500 | #ifdef MV643XX_COAL |
| 2501 | mp->rx_int_coal = |
| 2502 | eth_port_set_rx_coal(mp, MV643XX_RX_COAL); |
| 2503 | #endif |
| 2504 | |
| 2505 | mp->tx_int_coal = |
| 2506 | eth_port_set_tx_coal(mp, MV643XX_TX_COAL); |
| 2507 | |
| 2508 | /* Unmask phy and link status changes interrupts */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2509 | wrl(mp, INT_MASK_EXT(port_num), ETH_INT_UNMASK_ALL_EXT); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2510 | |
| 2511 | /* Unmask RX buffer and TX end interrupt */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2512 | wrl(mp, INT_MASK(port_num), ETH_INT_UNMASK_ALL); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2513 | |
| 2514 | return 0; |
| 2515 | |
| 2516 | out_free_tx_skb: |
| 2517 | kfree(mp->tx_skb); |
| 2518 | out_free_rx_skb: |
| 2519 | kfree(mp->rx_skb); |
| 2520 | out_free_irq: |
| 2521 | free_irq(dev->irq, dev); |
| 2522 | |
| 2523 | return err; |
| 2524 | } |
| 2525 | |
| 2526 | /* |
| 2527 | * eth_port_reset - Reset Ethernet port |
| 2528 | * |
| 2529 | * DESCRIPTION: |
| 2530 | * This routine resets the chip by aborting any SDMA engine activity and |
| 2531 | * clearing the MIB counters. The Receiver and the Transmit unit are in |
| 2532 | * idle state after this command is performed and the port is disabled. |
| 2533 | * |
| 2534 | * INPUT: |
| 2535 | * struct mv643xx_private *mp Ethernet Port. |
| 2536 | * |
| 2537 | * OUTPUT: |
| 2538 | * Channel activity is halted. |
| 2539 | * |
| 2540 | * RETURN: |
| 2541 | * None. |
| 2542 | * |
| 2543 | */ |
| 2544 | static void eth_port_reset(struct mv643xx_private *mp) |
| 2545 | { |
| 2546 | unsigned int port_num = mp->port_num; |
| 2547 | unsigned int reg_data; |
| 2548 | |
| 2549 | mv643xx_eth_port_disable_tx(mp); |
| 2550 | mv643xx_eth_port_disable_rx(mp); |
| 2551 | |
| 2552 | /* Clear all MIB counters */ |
| 2553 | eth_clear_mib_counters(mp); |
| 2554 | |
| 2555 | /* Reset the Enable bit in the Configuration Register */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2556 | reg_data = rdl(mp, PORT_SERIAL_CONTROL(port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2557 | reg_data &= ~(SERIAL_PORT_ENABLE | |
| 2558 | DO_NOT_FORCE_LINK_FAIL | |
| 2559 | FORCE_LINK_PASS); |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2560 | wrl(mp, PORT_SERIAL_CONTROL(port_num), reg_data); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2561 | } |
| 2562 | |
| 2563 | /* |
| 2564 | * mv643xx_eth_stop |
| 2565 | * |
| 2566 | * This function is used when closing the network device. |
| 2567 | * It updates the hardware, |
| 2568 | * release all memory that holds buffers and descriptors and release the IRQ. |
| 2569 | * Input : a pointer to the device structure |
| 2570 | * Output : zero if success , nonzero if fails |
| 2571 | */ |
| 2572 | |
| 2573 | static int mv643xx_eth_stop(struct net_device *dev) |
| 2574 | { |
| 2575 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2576 | unsigned int port_num = mp->port_num; |
| 2577 | |
| 2578 | /* Mask all interrupts on ethernet port */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2579 | wrl(mp, INT_MASK(port_num), ETH_INT_MASK_ALL); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2580 | /* wait for previous write to complete */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2581 | rdl(mp, INT_MASK(port_num)); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2582 | |
| 2583 | #ifdef MV643XX_NAPI |
| 2584 | napi_disable(&mp->napi); |
| 2585 | #endif |
| 2586 | netif_carrier_off(dev); |
| 2587 | netif_stop_queue(dev); |
| 2588 | |
| 2589 | eth_port_reset(mp); |
| 2590 | |
| 2591 | mv643xx_eth_free_tx_rings(dev); |
| 2592 | mv643xx_eth_free_rx_rings(dev); |
| 2593 | |
| 2594 | free_irq(dev->irq, dev); |
| 2595 | |
| 2596 | return 0; |
| 2597 | } |
| 2598 | |
| 2599 | static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 2600 | { |
| 2601 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2602 | |
| 2603 | return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL); |
| 2604 | } |
| 2605 | |
| 2606 | /* |
| 2607 | * Changes MTU (maximum transfer unit) of the gigabit ethenret port |
| 2608 | * |
| 2609 | * Input : pointer to ethernet interface network device structure |
| 2610 | * new mtu size |
| 2611 | * Output : 0 upon success, -EINVAL upon failure |
| 2612 | */ |
| 2613 | static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) |
| 2614 | { |
| 2615 | if ((new_mtu > 9500) || (new_mtu < 64)) |
| 2616 | return -EINVAL; |
| 2617 | |
| 2618 | dev->mtu = new_mtu; |
| 2619 | if (!netif_running(dev)) |
| 2620 | return 0; |
| 2621 | |
| 2622 | /* |
| 2623 | * Stop and then re-open the interface. This will allocate RX |
| 2624 | * skbs of the new MTU. |
| 2625 | * There is a possible danger that the open will not succeed, |
| 2626 | * due to memory being full, which might fail the open function. |
| 2627 | */ |
| 2628 | mv643xx_eth_stop(dev); |
| 2629 | if (mv643xx_eth_open(dev)) { |
| 2630 | printk(KERN_ERR "%s: Fatal error on opening device\n", |
| 2631 | dev->name); |
| 2632 | } |
| 2633 | |
| 2634 | return 0; |
| 2635 | } |
| 2636 | |
| 2637 | /* |
| 2638 | * mv643xx_eth_tx_timeout_task |
| 2639 | * |
| 2640 | * Actual routine to reset the adapter when a timeout on Tx has occurred |
| 2641 | */ |
| 2642 | static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly) |
| 2643 | { |
| 2644 | struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private, |
| 2645 | tx_timeout_task); |
| 2646 | struct net_device *dev = mp->dev; |
| 2647 | |
| 2648 | if (!netif_running(dev)) |
| 2649 | return; |
| 2650 | |
| 2651 | netif_stop_queue(dev); |
| 2652 | |
| 2653 | eth_port_reset(mp); |
| 2654 | eth_port_start(dev); |
| 2655 | |
| 2656 | if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB) |
| 2657 | netif_wake_queue(dev); |
| 2658 | } |
| 2659 | |
| 2660 | /* |
| 2661 | * mv643xx_eth_tx_timeout |
| 2662 | * |
| 2663 | * Called upon a timeout on transmitting a packet |
| 2664 | * |
| 2665 | * Input : pointer to ethernet interface network device structure. |
| 2666 | * Output : N/A |
| 2667 | */ |
| 2668 | static void mv643xx_eth_tx_timeout(struct net_device *dev) |
| 2669 | { |
| 2670 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2671 | |
| 2672 | printk(KERN_INFO "%s: TX timeout ", dev->name); |
| 2673 | |
| 2674 | /* Do the reset outside of interrupt context */ |
| 2675 | schedule_work(&mp->tx_timeout_task); |
| 2676 | } |
| 2677 | |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 2678 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 2679 | static void mv643xx_netpoll(struct net_device *netdev) |
| 2680 | { |
| 2681 | struct mv643xx_private *mp = netdev_priv(netdev); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 2682 | int port_num = mp->port_num; |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 2683 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2684 | wrl(mp, INT_MASK(port_num), ETH_INT_MASK_ALL); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 2685 | /* wait for previous write to complete */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2686 | rdl(mp, INT_MASK(port_num)); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 2687 | |
Al Viro | 9da3b1a | 2006-10-08 15:00:44 +0100 | [diff] [blame] | 2688 | mv643xx_eth_int_handler(netdev->irq, netdev); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 2689 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2690 | wrl(mp, INT_MASK(port_num), ETH_INT_UNMASK_ALL); |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 2691 | } |
| 2692 | #endif |
| 2693 | |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2694 | /* |
| 2695 | * Wrappers for MII support library. |
| 2696 | */ |
| 2697 | static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location) |
| 2698 | { |
| 2699 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2700 | int val; |
| 2701 | |
| 2702 | eth_port_read_smi_reg(mp, location, &val); |
| 2703 | return val; |
| 2704 | } |
| 2705 | |
| 2706 | static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val) |
| 2707 | { |
| 2708 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2709 | eth_port_write_smi_reg(mp, location, val); |
| 2710 | } |
| 2711 | |
| 2712 | |
| 2713 | /* platform glue ************************************************************/ |
| 2714 | static void mv643xx_eth_conf_mbus_windows(struct mv643xx_shared_private *msp, |
| 2715 | struct mbus_dram_target_info *dram) |
| 2716 | { |
| 2717 | void __iomem *base = msp->eth_base; |
| 2718 | u32 win_enable; |
| 2719 | u32 win_protect; |
| 2720 | int i; |
| 2721 | |
| 2722 | for (i = 0; i < 6; i++) { |
| 2723 | writel(0, base + WINDOW_BASE(i)); |
| 2724 | writel(0, base + WINDOW_SIZE(i)); |
| 2725 | if (i < 4) |
| 2726 | writel(0, base + WINDOW_REMAP_HIGH(i)); |
| 2727 | } |
| 2728 | |
| 2729 | win_enable = 0x3f; |
| 2730 | win_protect = 0; |
| 2731 | |
| 2732 | for (i = 0; i < dram->num_cs; i++) { |
| 2733 | struct mbus_dram_window *cs = dram->cs + i; |
| 2734 | |
| 2735 | writel((cs->base & 0xffff0000) | |
| 2736 | (cs->mbus_attr << 8) | |
| 2737 | dram->mbus_dram_target_id, base + WINDOW_BASE(i)); |
| 2738 | writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); |
| 2739 | |
| 2740 | win_enable &= ~(1 << i); |
| 2741 | win_protect |= 3 << (2 * i); |
| 2742 | } |
| 2743 | |
| 2744 | writel(win_enable, base + WINDOW_BAR_ENABLE); |
| 2745 | msp->win_protect = win_protect; |
| 2746 | } |
| 2747 | |
| 2748 | static int mv643xx_eth_shared_probe(struct platform_device *pdev) |
| 2749 | { |
| 2750 | static int mv643xx_version_printed = 0; |
| 2751 | struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; |
| 2752 | struct mv643xx_shared_private *msp; |
| 2753 | struct resource *res; |
| 2754 | int ret; |
| 2755 | |
| 2756 | if (!mv643xx_version_printed++) |
| 2757 | printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n"); |
| 2758 | |
| 2759 | ret = -EINVAL; |
| 2760 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 2761 | if (res == NULL) |
| 2762 | goto out; |
| 2763 | |
| 2764 | ret = -ENOMEM; |
| 2765 | msp = kmalloc(sizeof(*msp), GFP_KERNEL); |
| 2766 | if (msp == NULL) |
| 2767 | goto out; |
| 2768 | memset(msp, 0, sizeof(*msp)); |
| 2769 | |
| 2770 | msp->eth_base = ioremap(res->start, res->end - res->start + 1); |
| 2771 | if (msp->eth_base == NULL) |
| 2772 | goto out_free; |
| 2773 | |
| 2774 | spin_lock_init(&msp->phy_lock); |
| 2775 | msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; |
| 2776 | |
| 2777 | platform_set_drvdata(pdev, msp); |
| 2778 | |
| 2779 | /* |
| 2780 | * (Re-)program MBUS remapping windows if we are asked to. |
| 2781 | */ |
| 2782 | if (pd != NULL && pd->dram != NULL) |
| 2783 | mv643xx_eth_conf_mbus_windows(msp, pd->dram); |
| 2784 | |
| 2785 | return 0; |
| 2786 | |
| 2787 | out_free: |
| 2788 | kfree(msp); |
| 2789 | out: |
| 2790 | return ret; |
| 2791 | } |
| 2792 | |
| 2793 | static int mv643xx_eth_shared_remove(struct platform_device *pdev) |
| 2794 | { |
| 2795 | struct mv643xx_shared_private *msp = platform_get_drvdata(pdev); |
| 2796 | |
| 2797 | iounmap(msp->eth_base); |
| 2798 | kfree(msp); |
| 2799 | |
| 2800 | return 0; |
| 2801 | } |
| 2802 | |
| 2803 | static struct platform_driver mv643xx_eth_shared_driver = { |
| 2804 | .probe = mv643xx_eth_shared_probe, |
| 2805 | .remove = mv643xx_eth_shared_remove, |
| 2806 | .driver = { |
| 2807 | .name = MV643XX_ETH_SHARED_NAME, |
| 2808 | .owner = THIS_MODULE, |
| 2809 | }, |
| 2810 | }; |
| 2811 | |
| 2812 | /* |
| 2813 | * ethernet_phy_set - Set the ethernet port PHY address. |
| 2814 | * |
| 2815 | * DESCRIPTION: |
| 2816 | * This routine sets the given ethernet port PHY address. |
| 2817 | * |
| 2818 | * INPUT: |
| 2819 | * struct mv643xx_private *mp Ethernet Port. |
| 2820 | * int phy_addr PHY address. |
| 2821 | * |
| 2822 | * OUTPUT: |
| 2823 | * None. |
| 2824 | * |
| 2825 | * RETURN: |
| 2826 | * None. |
| 2827 | * |
| 2828 | */ |
| 2829 | static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr) |
| 2830 | { |
| 2831 | u32 reg_data; |
| 2832 | int addr_shift = 5 * mp->port_num; |
| 2833 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2834 | reg_data = rdl(mp, PHY_ADDR); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2835 | reg_data &= ~(0x1f << addr_shift); |
| 2836 | reg_data |= (phy_addr & 0x1f) << addr_shift; |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2837 | wrl(mp, PHY_ADDR, reg_data); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2838 | } |
| 2839 | |
| 2840 | /* |
| 2841 | * ethernet_phy_get - Get the ethernet port PHY address. |
| 2842 | * |
| 2843 | * DESCRIPTION: |
| 2844 | * This routine returns the given ethernet port PHY address. |
| 2845 | * |
| 2846 | * INPUT: |
| 2847 | * struct mv643xx_private *mp Ethernet Port. |
| 2848 | * |
| 2849 | * OUTPUT: |
| 2850 | * None. |
| 2851 | * |
| 2852 | * RETURN: |
| 2853 | * PHY address. |
| 2854 | * |
| 2855 | */ |
| 2856 | static int ethernet_phy_get(struct mv643xx_private *mp) |
| 2857 | { |
| 2858 | unsigned int reg_data; |
| 2859 | |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 2860 | reg_data = rdl(mp, PHY_ADDR); |
Lennert Buytenhek | c9df406f | 2008-06-01 00:48:39 +0200 | [diff] [blame] | 2861 | |
| 2862 | return ((reg_data >> (5 * mp->port_num)) & 0x1f); |
| 2863 | } |
| 2864 | |
| 2865 | /* |
| 2866 | * ethernet_phy_detect - Detect whether a phy is present |
| 2867 | * |
| 2868 | * DESCRIPTION: |
| 2869 | * This function tests whether there is a PHY present on |
| 2870 | * the specified port. |
| 2871 | * |
| 2872 | * INPUT: |
| 2873 | * struct mv643xx_private *mp Ethernet Port. |
| 2874 | * |
| 2875 | * OUTPUT: |
| 2876 | * None |
| 2877 | * |
| 2878 | * RETURN: |
| 2879 | * 0 on success |
| 2880 | * -ENODEV on failure |
| 2881 | * |
| 2882 | */ |
| 2883 | static int ethernet_phy_detect(struct mv643xx_private *mp) |
| 2884 | { |
| 2885 | unsigned int phy_reg_data0; |
| 2886 | int auto_neg; |
| 2887 | |
| 2888 | eth_port_read_smi_reg(mp, 0, &phy_reg_data0); |
| 2889 | auto_neg = phy_reg_data0 & 0x1000; |
| 2890 | phy_reg_data0 ^= 0x1000; /* invert auto_neg */ |
| 2891 | eth_port_write_smi_reg(mp, 0, phy_reg_data0); |
| 2892 | |
| 2893 | eth_port_read_smi_reg(mp, 0, &phy_reg_data0); |
| 2894 | if ((phy_reg_data0 & 0x1000) == auto_neg) |
| 2895 | return -ENODEV; /* change didn't take */ |
| 2896 | |
| 2897 | phy_reg_data0 ^= 0x1000; |
| 2898 | eth_port_write_smi_reg(mp, 0, phy_reg_data0); |
| 2899 | return 0; |
| 2900 | } |
| 2901 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2902 | static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address, |
| 2903 | int speed, int duplex, |
| 2904 | struct ethtool_cmd *cmd) |
| 2905 | { |
| 2906 | struct mv643xx_private *mp = netdev_priv(dev); |
| 2907 | |
| 2908 | memset(cmd, 0, sizeof(*cmd)); |
| 2909 | |
| 2910 | cmd->port = PORT_MII; |
| 2911 | cmd->transceiver = XCVR_INTERNAL; |
| 2912 | cmd->phy_address = phy_address; |
| 2913 | |
| 2914 | if (speed == 0) { |
| 2915 | cmd->autoneg = AUTONEG_ENABLE; |
| 2916 | /* mii lib checks, but doesn't use speed on AUTONEG_ENABLE */ |
| 2917 | cmd->speed = SPEED_100; |
| 2918 | cmd->advertising = ADVERTISED_10baseT_Half | |
| 2919 | ADVERTISED_10baseT_Full | |
| 2920 | ADVERTISED_100baseT_Half | |
| 2921 | ADVERTISED_100baseT_Full; |
| 2922 | if (mp->mii.supports_gmii) |
| 2923 | cmd->advertising |= ADVERTISED_1000baseT_Full; |
| 2924 | } else { |
| 2925 | cmd->autoneg = AUTONEG_DISABLE; |
| 2926 | cmd->speed = speed; |
| 2927 | cmd->duplex = duplex; |
| 2928 | } |
| 2929 | } |
| 2930 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2931 | /*/ |
| 2932 | * mv643xx_eth_probe |
| 2933 | * |
| 2934 | * First function called after registering the network device. |
| 2935 | * It's purpose is to initialize the device as an ethernet device, |
| 2936 | * fill the ethernet device structure with pointers * to functions, |
| 2937 | * and set the MAC address of the interface |
| 2938 | * |
| 2939 | * Input : struct device * |
| 2940 | * Output : -ENOMEM if failed , 0 if success |
| 2941 | */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2942 | static int mv643xx_eth_probe(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2943 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2944 | struct mv643xx_eth_platform_data *pd; |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 2945 | int port_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2946 | struct mv643xx_private *mp; |
| 2947 | struct net_device *dev; |
| 2948 | u8 *p; |
| 2949 | struct resource *res; |
| 2950 | int err; |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2951 | struct ethtool_cmd cmd; |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 2952 | int duplex = DUPLEX_HALF; |
| 2953 | int speed = 0; /* default to auto-negotiation */ |
Al Viro | c5d6471 | 2007-10-13 08:30:26 +0100 | [diff] [blame] | 2954 | DECLARE_MAC_BUF(mac); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2955 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 2956 | pd = pdev->dev.platform_data; |
| 2957 | if (pd == NULL) { |
| 2958 | printk(KERN_ERR "No mv643xx_eth_platform_data\n"); |
| 2959 | return -ENODEV; |
| 2960 | } |
| 2961 | |
Lennert Buytenhek | fa3959f | 2008-04-24 01:27:02 +0200 | [diff] [blame] | 2962 | if (pd->shared == NULL) { |
| 2963 | printk(KERN_ERR "No mv643xx_eth_platform_data->shared\n"); |
| 2964 | return -ENODEV; |
| 2965 | } |
| 2966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2967 | dev = alloc_etherdev(sizeof(struct mv643xx_private)); |
| 2968 | if (!dev) |
| 2969 | return -ENOMEM; |
| 2970 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2971 | platform_set_drvdata(pdev, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2972 | |
| 2973 | mp = netdev_priv(dev); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2974 | mp->dev = dev; |
| 2975 | #ifdef MV643XX_NAPI |
| 2976 | netif_napi_add(dev, &mp->napi, mv643xx_poll, 64); |
| 2977 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | |
| 2979 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 2980 | BUG_ON(!res); |
| 2981 | dev->irq = res->start; |
| 2982 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2983 | dev->open = mv643xx_eth_open; |
| 2984 | dev->stop = mv643xx_eth_stop; |
| 2985 | dev->hard_start_xmit = mv643xx_eth_start_xmit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2986 | dev->set_mac_address = mv643xx_eth_set_mac_address; |
| 2987 | dev->set_multicast_list = mv643xx_eth_set_rx_mode; |
| 2988 | |
| 2989 | /* No need to Tx Timeout */ |
| 2990 | dev->tx_timeout = mv643xx_eth_tx_timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2991 | |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 2992 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2993 | dev->poll_controller = mv643xx_netpoll; |
| 2994 | #endif |
| 2995 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2996 | dev->watchdog_timeo = 2 * HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2997 | dev->base_addr = 0; |
| 2998 | dev->change_mtu = mv643xx_eth_change_mtu; |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2999 | dev->do_ioctl = mv643xx_eth_do_ioctl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3000 | SET_ETHTOOL_OPS(dev, &mv643xx_ethtool_ops); |
| 3001 | |
| 3002 | #ifdef MV643XX_CHECKSUM_OFFLOAD_TX |
| 3003 | #ifdef MAX_SKB_FRAGS |
| 3004 | /* |
| 3005 | * Zero copy can only work if we use Discovery II memory. Else, we will |
| 3006 | * have to map the buffers to ISA memory which is only 16 MB |
| 3007 | */ |
Wolfram Joost | 6389057 | 2006-01-16 16:57:41 -0700 | [diff] [blame] | 3008 | dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3009 | #endif |
| 3010 | #endif |
| 3011 | |
| 3012 | /* Configure the timeout task */ |
Al Viro | 91c7c56 | 2006-12-06 19:50:06 +0000 | [diff] [blame] | 3013 | INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3014 | |
| 3015 | spin_lock_init(&mp->lock); |
| 3016 | |
Lennert Buytenhek | fa3959f | 2008-04-24 01:27:02 +0200 | [diff] [blame] | 3017 | mp->shared = platform_get_drvdata(pd->shared); |
Gabriel Paubert | fadac40 | 2007-03-23 12:03:52 -0700 | [diff] [blame] | 3018 | port_num = mp->port_num = pd->port_number; |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 3019 | |
Lennert Buytenhek | f2ce825 | 2008-04-24 01:27:17 +0200 | [diff] [blame] | 3020 | if (mp->shared->win_protect) |
| 3021 | wrl(mp, WINDOW_PROTECT(port_num), mp->shared->win_protect); |
| 3022 | |
Lennert Buytenhek | ce4e2e4 | 2008-04-24 01:29:59 +0200 | [diff] [blame] | 3023 | mp->shared_smi = mp->shared; |
| 3024 | if (pd->shared_smi != NULL) |
| 3025 | mp->shared_smi = platform_get_drvdata(pd->shared_smi); |
| 3026 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3027 | /* set default config values */ |
Lennert Buytenhek | afdb57a | 2008-03-18 11:36:08 -0700 | [diff] [blame] | 3028 | eth_port_uc_addr_get(mp, dev->dev_addr); |
Lennert Buytenhek | e4d00fa | 2007-10-19 04:11:28 +0200 | [diff] [blame] | 3029 | mp->rx_ring_size = PORT_DEFAULT_RECEIVE_QUEUE_SIZE; |
| 3030 | mp->tx_ring_size = PORT_DEFAULT_TRANSMIT_QUEUE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3031 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 3032 | if (is_valid_ether_addr(pd->mac_addr)) |
| 3033 | memcpy(dev->dev_addr, pd->mac_addr, 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3034 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 3035 | if (pd->phy_addr || pd->force_phy_addr) |
Lennert Buytenhek | afdb57a | 2008-03-18 11:36:08 -0700 | [diff] [blame] | 3036 | ethernet_phy_set(mp, pd->phy_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3037 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 3038 | if (pd->rx_queue_size) |
| 3039 | mp->rx_ring_size = pd->rx_queue_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3040 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 3041 | if (pd->tx_queue_size) |
| 3042 | mp->tx_ring_size = pd->tx_queue_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3043 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 3044 | if (pd->tx_sram_size) { |
| 3045 | mp->tx_sram_size = pd->tx_sram_size; |
| 3046 | mp->tx_sram_addr = pd->tx_sram_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3047 | } |
| 3048 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 3049 | if (pd->rx_sram_size) { |
| 3050 | mp->rx_sram_size = pd->rx_sram_size; |
| 3051 | mp->rx_sram_addr = pd->rx_sram_addr; |
| 3052 | } |
| 3053 | |
| 3054 | duplex = pd->duplex; |
| 3055 | speed = pd->speed; |
| 3056 | |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 3057 | /* Hook up MII support for ethtool */ |
| 3058 | mp->mii.dev = dev; |
| 3059 | mp->mii.mdio_read = mv643xx_mdio_read; |
| 3060 | mp->mii.mdio_write = mv643xx_mdio_write; |
Lennert Buytenhek | afdb57a | 2008-03-18 11:36:08 -0700 | [diff] [blame] | 3061 | mp->mii.phy_id = ethernet_phy_get(mp); |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 3062 | mp->mii.phy_id_mask = 0x3f; |
| 3063 | mp->mii.reg_num_mask = 0x1f; |
| 3064 | |
Lennert Buytenhek | afdb57a | 2008-03-18 11:36:08 -0700 | [diff] [blame] | 3065 | err = ethernet_phy_detect(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3066 | if (err) { |
Lennert Buytenhek | c1b35a2 | 2008-03-18 11:37:19 -0700 | [diff] [blame] | 3067 | pr_debug("%s: No PHY detected at addr %d\n", |
| 3068 | dev->name, ethernet_phy_get(mp)); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 3069 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3070 | } |
| 3071 | |
Lennert Buytenhek | afdb57a | 2008-03-18 11:36:08 -0700 | [diff] [blame] | 3072 | ethernet_phy_reset(mp); |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 3073 | mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 3074 | mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd); |
| 3075 | mv643xx_eth_update_pscr(dev, &cmd); |
| 3076 | mv643xx_set_settings(dev, &cmd); |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 3077 | |
Olaf Hering | b0b8dab | 2006-04-27 18:23:49 -0700 | [diff] [blame] | 3078 | SET_NETDEV_DEV(dev, &pdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3079 | err = register_netdev(dev); |
| 3080 | if (err) |
| 3081 | goto out; |
| 3082 | |
| 3083 | p = dev->dev_addr; |
| 3084 | printk(KERN_NOTICE |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 3085 | "%s: port %d with MAC address %s\n", |
| 3086 | dev->name, port_num, print_mac(mac, p)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3087 | |
| 3088 | if (dev->features & NETIF_F_SG) |
| 3089 | printk(KERN_NOTICE "%s: Scatter Gather Enabled\n", dev->name); |
| 3090 | |
| 3091 | if (dev->features & NETIF_F_IP_CSUM) |
| 3092 | printk(KERN_NOTICE "%s: TX TCP/IP Checksumming Supported\n", |
| 3093 | dev->name); |
| 3094 | |
| 3095 | #ifdef MV643XX_CHECKSUM_OFFLOAD_TX |
| 3096 | printk(KERN_NOTICE "%s: RX TCP/UDP Checksum Offload ON \n", dev->name); |
| 3097 | #endif |
| 3098 | |
| 3099 | #ifdef MV643XX_COAL |
| 3100 | printk(KERN_NOTICE "%s: TX and RX Interrupt Coalescing ON \n", |
| 3101 | dev->name); |
| 3102 | #endif |
| 3103 | |
| 3104 | #ifdef MV643XX_NAPI |
| 3105 | printk(KERN_NOTICE "%s: RX NAPI Enabled \n", dev->name); |
| 3106 | #endif |
| 3107 | |
Nicolas DET | b152987 | 2005-10-28 17:46:30 -0700 | [diff] [blame] | 3108 | if (mp->tx_sram_size > 0) |
| 3109 | printk(KERN_NOTICE "%s: Using SRAM\n", dev->name); |
| 3110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3111 | return 0; |
| 3112 | |
| 3113 | out: |
| 3114 | free_netdev(dev); |
| 3115 | |
| 3116 | return err; |
| 3117 | } |
| 3118 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3119 | static int mv643xx_eth_remove(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3120 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3121 | struct net_device *dev = platform_get_drvdata(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3122 | |
| 3123 | unregister_netdev(dev); |
| 3124 | flush_scheduled_work(); |
| 3125 | |
| 3126 | free_netdev(dev); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3127 | platform_set_drvdata(pdev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3128 | return 0; |
| 3129 | } |
| 3130 | |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 3131 | static void mv643xx_eth_shutdown(struct platform_device *pdev) |
| 3132 | { |
| 3133 | struct net_device *dev = platform_get_drvdata(pdev); |
| 3134 | struct mv643xx_private *mp = netdev_priv(dev); |
| 3135 | unsigned int port_num = mp->port_num; |
| 3136 | |
| 3137 | /* Mask all interrupts on ethernet port */ |
Lennert Buytenhek | 3cb4667 | 2008-06-01 01:03:23 +0200 | [diff] [blame^] | 3138 | wrl(mp, INT_MASK(port_num), 0); |
| 3139 | rdl(mp, INT_MASK(port_num)); |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 3140 | |
Lennert Buytenhek | afdb57a | 2008-03-18 11:36:08 -0700 | [diff] [blame] | 3141 | eth_port_reset(mp); |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 3142 | } |
| 3143 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3144 | static struct platform_driver mv643xx_eth_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3145 | .probe = mv643xx_eth_probe, |
| 3146 | .remove = mv643xx_eth_remove, |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 3147 | .shutdown = mv643xx_eth_shutdown, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3148 | .driver = { |
| 3149 | .name = MV643XX_ETH_NAME, |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 3150 | .owner = THIS_MODULE, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3151 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3152 | }; |
| 3153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3154 | /* |
| 3155 | * mv643xx_init_module |
| 3156 | * |
| 3157 | * Registers the network drivers into the Linux kernel |
| 3158 | * |
| 3159 | * Input : N/A |
| 3160 | * |
| 3161 | * Output : N/A |
| 3162 | */ |
| 3163 | static int __init mv643xx_init_module(void) |
| 3164 | { |
| 3165 | int rc; |
| 3166 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3167 | rc = platform_driver_register(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3168 | if (!rc) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3169 | rc = platform_driver_register(&mv643xx_eth_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3170 | if (rc) |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3171 | platform_driver_unregister(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3172 | } |
| 3173 | return rc; |
| 3174 | } |
| 3175 | |
| 3176 | /* |
| 3177 | * mv643xx_cleanup_module |
| 3178 | * |
| 3179 | * Registers the network drivers into the Linux kernel |
| 3180 | * |
| 3181 | * Input : N/A |
| 3182 | * |
| 3183 | * Output : N/A |
| 3184 | */ |
| 3185 | static void __exit mv643xx_cleanup_module(void) |
| 3186 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 3187 | platform_driver_unregister(&mv643xx_eth_driver); |
| 3188 | platform_driver_unregister(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3189 | } |
| 3190 | |
| 3191 | module_init(mv643xx_init_module); |
| 3192 | module_exit(mv643xx_cleanup_module); |
| 3193 | |
| 3194 | MODULE_LICENSE("GPL"); |
| 3195 | MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani" |
| 3196 | " and Dale Farnsworth"); |
| 3197 | MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 3198 | MODULE_ALIAS("platform:" MV643XX_ETH_NAME); |
| 3199 | MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); |