Maciej W. Rozycki | c4b41c9 | 2006-10-03 16:18:13 +0100 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/phy/broadcom.c |
| 3 | * |
| 4 | * Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet |
| 5 | * transceivers. |
| 6 | * |
| 7 | * Copyright (c) 2006 Maciej W. Rozycki |
| 8 | * |
| 9 | * Inspired by code written by Amy Fong. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License |
| 13 | * as published by the Free Software Foundation; either version |
| 14 | * 2 of the License, or (at your option) any later version. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/phy.h> |
| 19 | |
| 20 | #define MII_BCM54XX_ECR 0x10 /* BCM54xx extended control register */ |
| 21 | #define MII_BCM54XX_ECR_IM 0x1000 /* Interrupt mask */ |
| 22 | #define MII_BCM54XX_ECR_IF 0x0800 /* Interrupt force */ |
| 23 | |
| 24 | #define MII_BCM54XX_ESR 0x11 /* BCM54xx extended status register */ |
| 25 | #define MII_BCM54XX_ESR_IS 0x1000 /* Interrupt status */ |
| 26 | |
| 27 | #define MII_BCM54XX_ISR 0x1a /* BCM54xx interrupt status register */ |
| 28 | #define MII_BCM54XX_IMR 0x1b /* BCM54xx interrupt mask register */ |
| 29 | #define MII_BCM54XX_INT_CRCERR 0x0001 /* CRC error */ |
| 30 | #define MII_BCM54XX_INT_LINK 0x0002 /* Link status changed */ |
| 31 | #define MII_BCM54XX_INT_SPEED 0x0004 /* Link speed change */ |
| 32 | #define MII_BCM54XX_INT_DUPLEX 0x0008 /* Duplex mode changed */ |
| 33 | #define MII_BCM54XX_INT_LRS 0x0010 /* Local receiver status changed */ |
| 34 | #define MII_BCM54XX_INT_RRS 0x0020 /* Remote receiver status changed */ |
| 35 | #define MII_BCM54XX_INT_SSERR 0x0040 /* Scrambler synchronization error */ |
| 36 | #define MII_BCM54XX_INT_UHCD 0x0080 /* Unsupported HCD negotiated */ |
| 37 | #define MII_BCM54XX_INT_NHCD 0x0100 /* No HCD */ |
| 38 | #define MII_BCM54XX_INT_NHCDL 0x0200 /* No HCD link */ |
| 39 | #define MII_BCM54XX_INT_ANPR 0x0400 /* Auto-negotiation page received */ |
| 40 | #define MII_BCM54XX_INT_LC 0x0800 /* All counters below 128 */ |
| 41 | #define MII_BCM54XX_INT_HC 0x1000 /* Counter above 32768 */ |
| 42 | #define MII_BCM54XX_INT_MDIX 0x2000 /* MDIX status change */ |
| 43 | #define MII_BCM54XX_INT_PSERR 0x4000 /* Pair swap error */ |
| 44 | |
| 45 | MODULE_DESCRIPTION("Broadcom PHY driver"); |
| 46 | MODULE_AUTHOR("Maciej W. Rozycki"); |
| 47 | MODULE_LICENSE("GPL"); |
| 48 | |
| 49 | static int bcm54xx_config_init(struct phy_device *phydev) |
| 50 | { |
| 51 | int reg, err; |
| 52 | |
| 53 | reg = phy_read(phydev, MII_BCM54XX_ECR); |
| 54 | if (reg < 0) |
| 55 | return reg; |
| 56 | |
| 57 | /* Mask interrupts globally. */ |
| 58 | reg |= MII_BCM54XX_ECR_IM; |
| 59 | err = phy_write(phydev, MII_BCM54XX_ECR, reg); |
| 60 | if (err < 0) |
| 61 | return err; |
| 62 | |
| 63 | /* Unmask events we are interested in. */ |
| 64 | reg = ~(MII_BCM54XX_INT_DUPLEX | |
| 65 | MII_BCM54XX_INT_SPEED | |
| 66 | MII_BCM54XX_INT_LINK); |
| 67 | err = phy_write(phydev, MII_BCM54XX_IMR, reg); |
| 68 | if (err < 0) |
| 69 | return err; |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static int bcm54xx_ack_interrupt(struct phy_device *phydev) |
| 74 | { |
| 75 | int reg; |
| 76 | |
| 77 | /* Clear pending interrupts. */ |
| 78 | reg = phy_read(phydev, MII_BCM54XX_ISR); |
| 79 | if (reg < 0) |
| 80 | return reg; |
| 81 | |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | static int bcm54xx_config_intr(struct phy_device *phydev) |
| 86 | { |
| 87 | int reg, err; |
| 88 | |
| 89 | reg = phy_read(phydev, MII_BCM54XX_ECR); |
| 90 | if (reg < 0) |
| 91 | return reg; |
| 92 | |
| 93 | if (phydev->interrupts == PHY_INTERRUPT_ENABLED) |
| 94 | reg &= ~MII_BCM54XX_ECR_IM; |
| 95 | else |
| 96 | reg |= MII_BCM54XX_ECR_IM; |
| 97 | |
| 98 | err = phy_write(phydev, MII_BCM54XX_ECR, reg); |
| 99 | return err; |
| 100 | } |
| 101 | |
Anton Vorontsov | 57bb7e2 | 2008-03-04 19:41:32 +0300 | [diff] [blame] | 102 | static int bcm5481_config_aneg(struct phy_device *phydev) |
| 103 | { |
| 104 | int ret; |
| 105 | |
| 106 | /* Aneg firsly. */ |
| 107 | ret = genphy_config_aneg(phydev); |
| 108 | |
| 109 | /* Then we can set up the delay. */ |
| 110 | if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) { |
| 111 | u16 reg; |
| 112 | |
| 113 | /* |
| 114 | * There is no BCM5481 specification available, so down |
| 115 | * here is everything we know about "register 0x18". This |
| 116 | * at least helps BCM5481 to successfuly receive packets |
| 117 | * on MPC8360E-RDK board. Peter Barada <peterb@logicpd.com> |
| 118 | * says: "This sets delay between the RXD and RXC signals |
| 119 | * instead of using trace lengths to achieve timing". |
| 120 | */ |
| 121 | |
| 122 | /* Set RDX clk delay. */ |
| 123 | reg = 0x7 | (0x7 << 12); |
| 124 | phy_write(phydev, 0x18, reg); |
| 125 | |
| 126 | reg = phy_read(phydev, 0x18); |
| 127 | /* Set RDX-RXC skew. */ |
| 128 | reg |= (1 << 8); |
| 129 | /* Write bits 14:0. */ |
| 130 | reg |= (1 << 15); |
| 131 | phy_write(phydev, 0x18, reg); |
| 132 | } |
| 133 | |
| 134 | return ret; |
| 135 | } |
| 136 | |
Maciej W. Rozycki | c4b41c9 | 2006-10-03 16:18:13 +0100 | [diff] [blame] | 137 | static struct phy_driver bcm5411_driver = { |
| 138 | .phy_id = 0x00206070, |
| 139 | .phy_id_mask = 0xfffffff0, |
| 140 | .name = "Broadcom BCM5411", |
| 141 | .features = PHY_GBIT_FEATURES, |
| 142 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, |
| 143 | .config_init = bcm54xx_config_init, |
| 144 | .config_aneg = genphy_config_aneg, |
| 145 | .read_status = genphy_read_status, |
| 146 | .ack_interrupt = bcm54xx_ack_interrupt, |
| 147 | .config_intr = bcm54xx_config_intr, |
| 148 | .driver = { .owner = THIS_MODULE }, |
| 149 | }; |
| 150 | |
| 151 | static struct phy_driver bcm5421_driver = { |
| 152 | .phy_id = 0x002060e0, |
| 153 | .phy_id_mask = 0xfffffff0, |
| 154 | .name = "Broadcom BCM5421", |
| 155 | .features = PHY_GBIT_FEATURES, |
| 156 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, |
| 157 | .config_init = bcm54xx_config_init, |
| 158 | .config_aneg = genphy_config_aneg, |
| 159 | .read_status = genphy_read_status, |
| 160 | .ack_interrupt = bcm54xx_ack_interrupt, |
| 161 | .config_intr = bcm54xx_config_intr, |
| 162 | .driver = { .owner = THIS_MODULE }, |
| 163 | }; |
| 164 | |
| 165 | static struct phy_driver bcm5461_driver = { |
| 166 | .phy_id = 0x002060c0, |
| 167 | .phy_id_mask = 0xfffffff0, |
| 168 | .name = "Broadcom BCM5461", |
| 169 | .features = PHY_GBIT_FEATURES, |
| 170 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, |
| 171 | .config_init = bcm54xx_config_init, |
| 172 | .config_aneg = genphy_config_aneg, |
| 173 | .read_status = genphy_read_status, |
| 174 | .ack_interrupt = bcm54xx_ack_interrupt, |
| 175 | .config_intr = bcm54xx_config_intr, |
| 176 | .driver = { .owner = THIS_MODULE }, |
| 177 | }; |
| 178 | |
Paul Gortmaker | b1394f9 | 2008-04-14 23:35:41 -0400 | [diff] [blame] | 179 | static struct phy_driver bcm5464_driver = { |
| 180 | .phy_id = 0x002060b0, |
| 181 | .phy_id_mask = 0xfffffff0, |
| 182 | .name = "Broadcom BCM5464", |
| 183 | .features = PHY_GBIT_FEATURES, |
| 184 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, |
| 185 | .config_init = bcm54xx_config_init, |
| 186 | .config_aneg = genphy_config_aneg, |
| 187 | .read_status = genphy_read_status, |
| 188 | .ack_interrupt = bcm54xx_ack_interrupt, |
| 189 | .config_intr = bcm54xx_config_intr, |
| 190 | .driver = { .owner = THIS_MODULE }, |
| 191 | }; |
| 192 | |
Anton Vorontsov | 57bb7e2 | 2008-03-04 19:41:32 +0300 | [diff] [blame] | 193 | static struct phy_driver bcm5481_driver = { |
| 194 | .phy_id = 0x0143bca0, |
| 195 | .phy_id_mask = 0xfffffff0, |
| 196 | .name = "Broadcom BCM5481", |
| 197 | .features = PHY_GBIT_FEATURES, |
| 198 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, |
| 199 | .config_init = bcm54xx_config_init, |
| 200 | .config_aneg = bcm5481_config_aneg, |
| 201 | .read_status = genphy_read_status, |
| 202 | .ack_interrupt = bcm54xx_ack_interrupt, |
| 203 | .config_intr = bcm54xx_config_intr, |
| 204 | .driver = { .owner = THIS_MODULE }, |
| 205 | }; |
| 206 | |
Nate Case | 03157ac | 2008-01-29 10:19:00 -0600 | [diff] [blame] | 207 | static struct phy_driver bcm5482_driver = { |
Anton Vorontsov | 57bb7e2 | 2008-03-04 19:41:32 +0300 | [diff] [blame] | 208 | .phy_id = 0x0143bcb0, |
Nate Case | 03157ac | 2008-01-29 10:19:00 -0600 | [diff] [blame] | 209 | .phy_id_mask = 0xfffffff0, |
| 210 | .name = "Broadcom BCM5482", |
| 211 | .features = PHY_GBIT_FEATURES, |
| 212 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, |
| 213 | .config_init = bcm54xx_config_init, |
| 214 | .config_aneg = genphy_config_aneg, |
| 215 | .read_status = genphy_read_status, |
| 216 | .ack_interrupt = bcm54xx_ack_interrupt, |
| 217 | .config_intr = bcm54xx_config_intr, |
| 218 | .driver = { .owner = THIS_MODULE }, |
| 219 | }; |
| 220 | |
Maciej W. Rozycki | c4b41c9 | 2006-10-03 16:18:13 +0100 | [diff] [blame] | 221 | static int __init broadcom_init(void) |
| 222 | { |
| 223 | int ret; |
| 224 | |
| 225 | ret = phy_driver_register(&bcm5411_driver); |
| 226 | if (ret) |
| 227 | goto out_5411; |
| 228 | ret = phy_driver_register(&bcm5421_driver); |
| 229 | if (ret) |
| 230 | goto out_5421; |
| 231 | ret = phy_driver_register(&bcm5461_driver); |
| 232 | if (ret) |
| 233 | goto out_5461; |
Paul Gortmaker | b1394f9 | 2008-04-14 23:35:41 -0400 | [diff] [blame] | 234 | ret = phy_driver_register(&bcm5464_driver); |
| 235 | if (ret) |
| 236 | goto out_5464; |
Anton Vorontsov | 57bb7e2 | 2008-03-04 19:41:32 +0300 | [diff] [blame] | 237 | ret = phy_driver_register(&bcm5481_driver); |
| 238 | if (ret) |
| 239 | goto out_5481; |
Nate Case | 03157ac | 2008-01-29 10:19:00 -0600 | [diff] [blame] | 240 | ret = phy_driver_register(&bcm5482_driver); |
| 241 | if (ret) |
| 242 | goto out_5482; |
Maciej W. Rozycki | c4b41c9 | 2006-10-03 16:18:13 +0100 | [diff] [blame] | 243 | return ret; |
| 244 | |
Nate Case | 03157ac | 2008-01-29 10:19:00 -0600 | [diff] [blame] | 245 | out_5482: |
Anton Vorontsov | 57bb7e2 | 2008-03-04 19:41:32 +0300 | [diff] [blame] | 246 | phy_driver_unregister(&bcm5481_driver); |
| 247 | out_5481: |
Paul Gortmaker | b1394f9 | 2008-04-14 23:35:41 -0400 | [diff] [blame] | 248 | phy_driver_unregister(&bcm5464_driver); |
| 249 | out_5464: |
Nate Case | 03157ac | 2008-01-29 10:19:00 -0600 | [diff] [blame] | 250 | phy_driver_unregister(&bcm5461_driver); |
Maciej W. Rozycki | c4b41c9 | 2006-10-03 16:18:13 +0100 | [diff] [blame] | 251 | out_5461: |
| 252 | phy_driver_unregister(&bcm5421_driver); |
| 253 | out_5421: |
| 254 | phy_driver_unregister(&bcm5411_driver); |
| 255 | out_5411: |
| 256 | return ret; |
| 257 | } |
| 258 | |
| 259 | static void __exit broadcom_exit(void) |
| 260 | { |
Nate Case | 03157ac | 2008-01-29 10:19:00 -0600 | [diff] [blame] | 261 | phy_driver_unregister(&bcm5482_driver); |
Anton Vorontsov | 57bb7e2 | 2008-03-04 19:41:32 +0300 | [diff] [blame] | 262 | phy_driver_unregister(&bcm5481_driver); |
Paul Gortmaker | b1394f9 | 2008-04-14 23:35:41 -0400 | [diff] [blame] | 263 | phy_driver_unregister(&bcm5464_driver); |
Maciej W. Rozycki | c4b41c9 | 2006-10-03 16:18:13 +0100 | [diff] [blame] | 264 | phy_driver_unregister(&bcm5461_driver); |
| 265 | phy_driver_unregister(&bcm5421_driver); |
| 266 | phy_driver_unregister(&bcm5411_driver); |
| 267 | } |
| 268 | |
| 269 | module_init(broadcom_init); |
| 270 | module_exit(broadcom_exit); |