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authorMaciej W. Rozycki <macro@linux-mips.org>2006-10-03 11:18:13 -0400
committerJeff Garzik <jeff@garzik.org>2006-12-02 00:11:54 -0500
commitc4b41c9f077392803cd548000f3a2312dcd4a122 (patch)
tree39142d866f9a910bdb6303799b8b468d1c4d91b8
parent116b23b0ed36f8d5b56d16ac50266fce8de904c1 (diff)
[PATCH] 2.6.18: sb1250-mac: Broadcom PHY support
This patch adds support for interrupt-driven operation of the Broadcom Gigabit Ethernet PHYs. I have included device IDs for the parts used on Broadcom SiByte evaluation boards; more can be added as a need arises. They are apparently generally software-compatible with one another. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> patch-mips-2.6.18-20060920-broadcom-phy-15 Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/phy/Kconfig6
-rw-r--r--drivers/net/phy/Makefile1
-rw-r--r--drivers/net/phy/broadcom.c175
3 files changed, 182 insertions, 0 deletions
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index ecb61f876f27..f994f129f3d8 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -56,6 +56,12 @@ config SMSC_PHY
56 ---help--- 56 ---help---
57 Currently supports the LAN83C185 PHY 57 Currently supports the LAN83C185 PHY
58 58
59config BROADCOM_PHY
60 tristate "Drivers for Broadcom PHYs"
61 depends on PHYLIB
62 ---help---
63 Currently supports the BCM5411, BCM5421 and BCM5461 PHYs.
64
59config FIXED_PHY 65config FIXED_PHY
60 tristate "Drivers for PHY emulation on fixed speed/link" 66 tristate "Drivers for PHY emulation on fixed speed/link"
61 depends on PHYLIB 67 depends on PHYLIB
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 320f8323123f..bcd1efbd2a18 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -10,4 +10,5 @@ obj-$(CONFIG_LXT_PHY) += lxt.o
10obj-$(CONFIG_QSEMI_PHY) += qsemi.o 10obj-$(CONFIG_QSEMI_PHY) += qsemi.o
11obj-$(CONFIG_SMSC_PHY) += smsc.o 11obj-$(CONFIG_SMSC_PHY) += smsc.o
12obj-$(CONFIG_VITESSE_PHY) += vitesse.o 12obj-$(CONFIG_VITESSE_PHY) += vitesse.o
13obj-$(CONFIG_BROADCOM_PHY) += broadcom.o
13obj-$(CONFIG_FIXED_PHY) += fixed.o 14obj-$(CONFIG_FIXED_PHY) += fixed.o
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
new file mode 100644
index 000000000000..29666c85ed55
--- /dev/null
+++ b/drivers/net/phy/broadcom.c
@@ -0,0 +1,175 @@
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
45MODULE_DESCRIPTION("Broadcom PHY driver");
46MODULE_AUTHOR("Maciej W. Rozycki");
47MODULE_LICENSE("GPL");
48
49static 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
73static 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
85static 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
102static struct phy_driver bcm5411_driver = {
103 .phy_id = 0x00206070,
104 .phy_id_mask = 0xfffffff0,
105 .name = "Broadcom BCM5411",
106 .features = PHY_GBIT_FEATURES,
107 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
108 .config_init = bcm54xx_config_init,
109 .config_aneg = genphy_config_aneg,
110 .read_status = genphy_read_status,
111 .ack_interrupt = bcm54xx_ack_interrupt,
112 .config_intr = bcm54xx_config_intr,
113 .driver = { .owner = THIS_MODULE },
114};
115
116static struct phy_driver bcm5421_driver = {
117 .phy_id = 0x002060e0,
118 .phy_id_mask = 0xfffffff0,
119 .name = "Broadcom BCM5421",
120 .features = PHY_GBIT_FEATURES,
121 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
122 .config_init = bcm54xx_config_init,
123 .config_aneg = genphy_config_aneg,
124 .read_status = genphy_read_status,
125 .ack_interrupt = bcm54xx_ack_interrupt,
126 .config_intr = bcm54xx_config_intr,
127 .driver = { .owner = THIS_MODULE },
128};
129
130static struct phy_driver bcm5461_driver = {
131 .phy_id = 0x002060c0,
132 .phy_id_mask = 0xfffffff0,
133 .name = "Broadcom BCM5461",
134 .features = PHY_GBIT_FEATURES,
135 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
136 .config_init = bcm54xx_config_init,
137 .config_aneg = genphy_config_aneg,
138 .read_status = genphy_read_status,
139 .ack_interrupt = bcm54xx_ack_interrupt,
140 .config_intr = bcm54xx_config_intr,
141 .driver = { .owner = THIS_MODULE },
142};
143
144static int __init broadcom_init(void)
145{
146 int ret;
147
148 ret = phy_driver_register(&bcm5411_driver);
149 if (ret)
150 goto out_5411;
151 ret = phy_driver_register(&bcm5421_driver);
152 if (ret)
153 goto out_5421;
154 ret = phy_driver_register(&bcm5461_driver);
155 if (ret)
156 goto out_5461;
157 return ret;
158
159out_5461:
160 phy_driver_unregister(&bcm5421_driver);
161out_5421:
162 phy_driver_unregister(&bcm5411_driver);
163out_5411:
164 return ret;
165}
166
167static void __exit broadcom_exit(void)
168{
169 phy_driver_unregister(&bcm5461_driver);
170 phy_driver_unregister(&bcm5421_driver);
171 phy_driver_unregister(&bcm5411_driver);
172}
173
174module_init(broadcom_init);
175module_exit(broadcom_exit);