forked from Ivasoft/openwrt
ralink: move ethernet driver to files/
Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 43194
This commit is contained in:
John Crispin
588
target/linux/ramips/files/drivers/net/ethernet/ralink/mt7530.c
Normal file
588
target/linux/ramips/files/drivers/net/ethernet/ralink/mt7530.c
Normal file
@@ -0,0 +1,588 @@
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
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*/
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#include <linux/if.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/if_ether.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/netlink.h>
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#include <linux/bitops.h>
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#include <net/genetlink.h>
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#include <linux/switch.h>
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#include <linux/delay.h>
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#include <linux/phy.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/lockdep.h>
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#include <linux/workqueue.h>
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#include <linux/of_device.h>
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#include "mt7530.h"
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#define MT7530_CPU_PORT 6
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#define MT7530_NUM_PORTS 8
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#define MT7530_NUM_VLANS 16
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#define MT7530_MAX_VID 4095
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#define MT7530_MIN_VID 0
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/* registers */
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#define REG_ESW_VLAN_VTCR 0x90
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#define REG_ESW_VLAN_VAWD1 0x94
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#define REG_ESW_VLAN_VAWD2 0x98
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#define REG_ESW_VLAN_VTIM(x) (0x100 + 4 * ((x) / 2))
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#define REG_ESW_VLAN_VAWD1_IVL_MAC BIT(30)
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#define REG_ESW_VLAN_VAWD1_VTAG_EN BIT(28)
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#define REG_ESW_VLAN_VAWD1_VALID BIT(0)
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/* vlan egress mode */
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enum {
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ETAG_CTRL_UNTAG = 0,
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ETAG_CTRL_TAG = 2,
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ETAG_CTRL_SWAP = 1,
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ETAG_CTRL_STACK = 3,
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};
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#define REG_ESW_PORT_PCR(x) (0x2004 | ((x) << 8))
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#define REG_ESW_PORT_PVC(x) (0x2010 | ((x) << 8))
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#define REG_ESW_PORT_PPBV1(x) (0x2014 | ((x) << 8))
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#define REG_HWTRAP 0x7804
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enum {
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/* Global attributes. */
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MT7530_ATTR_ENABLE_VLAN,
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};
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struct mt7530_port_entry {
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u16 pvid;
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};
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struct mt7530_vlan_entry {
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u16 vid;
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u8 member;
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u8 etags;
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};
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struct mt7530_priv {
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void __iomem *base;
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struct mii_bus *bus;
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struct switch_dev swdev;
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bool global_vlan_enable;
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struct mt7530_vlan_entry vlan_entries[MT7530_NUM_VLANS];
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struct mt7530_port_entry port_entries[MT7530_NUM_PORTS];
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};
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struct mt7530_mapping {
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char *name;
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u16 pvids[MT7530_NUM_PORTS];
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u8 members[MT7530_NUM_VLANS];
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u8 etags[MT7530_NUM_VLANS];
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u16 vids[MT7530_NUM_VLANS];
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} mt7530_defaults[] = {
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{
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.name = "llllw",
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.pvids = { 1, 1, 1, 1, 2, 1, 1 },
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.members = { 0, 0x6f, 0x50 },
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.etags = { 0, 0x40, 0x40 },
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.vids = { 0, 1, 2 },
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}, {
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.name = "wllll",
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.pvids = { 2, 1, 1, 1, 1, 1, 1 },
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.members = { 0, 0x7e, 0x41 },
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.etags = { 0, 0x40, 0x40 },
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.vids = { 0, 1, 2 },
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},
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};
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struct mt7530_mapping*
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mt7530_find_mapping(struct device_node *np)
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{
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const char *map;
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int i;
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if (of_property_read_string(np, "ralink,port-map", &map))
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return NULL;
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for (i = 0; i < ARRAY_SIZE(mt7530_defaults); i++)
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if (!strcmp(map, mt7530_defaults[i].name))
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return &mt7530_defaults[i];
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return NULL;
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}
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static void
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mt7530_apply_mapping(struct mt7530_priv *mt7530, struct mt7530_mapping *map)
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{
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int i = 0;
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for (i = 0; i < MT7530_NUM_PORTS; i++)
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mt7530->port_entries[i].pvid = map->pvids[i];
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for (i = 0; i < MT7530_NUM_VLANS; i++) {
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mt7530->vlan_entries[i].member = map->members[i];
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mt7530->vlan_entries[i].etags = map->etags[i];
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mt7530->vlan_entries[i].vid = map->vids[i];
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}
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}
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static int
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mt7530_reset_switch(struct switch_dev *dev)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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int i;
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memset(priv->port_entries, 0, sizeof(priv->port_entries));
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memset(priv->vlan_entries, 0, sizeof(priv->vlan_entries));
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/* set default vid of each vlan to the same number of vlan, so the vid
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* won't need be set explicitly.
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*/
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for (i = 0; i < MT7530_NUM_VLANS; i++) {
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priv->vlan_entries[i].vid = i;
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}
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return 0;
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}
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static int
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mt7530_get_vlan_enable(struct switch_dev *dev,
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const struct switch_attr *attr,
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struct switch_val *val)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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val->value.i = priv->global_vlan_enable;
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return 0;
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}
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static int
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mt7530_set_vlan_enable(struct switch_dev *dev,
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const struct switch_attr *attr,
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struct switch_val *val)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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priv->global_vlan_enable = val->value.i != 0;
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return 0;
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}
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static u32
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mt7530_r32(struct mt7530_priv *priv, u32 reg)
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{
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u32 val;
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if (priv->bus) {
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u16 high, low;
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mdiobus_write(priv->bus, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
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low = mdiobus_read(priv->bus, 0x1f, (reg >> 2) & 0xf);
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high = mdiobus_read(priv->bus, 0x1f, 0x10);
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return (high << 16) | (low & 0xffff);
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}
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val = ioread32(priv->base + reg);
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pr_debug("MT7530 MDIO Read [%04x]=%08x\n", reg, val);
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return val;
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}
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static void
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mt7530_w32(struct mt7530_priv *priv, u32 reg, u32 val)
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{
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if (priv->bus) {
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mdiobus_write(priv->bus, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
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mdiobus_write(priv->bus, 0x1f, (reg >> 2) & 0xf, val & 0xffff);
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mdiobus_write(priv->bus, 0x1f, 0x10, val >> 16);
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return;
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}
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pr_debug("MT7530 MDIO Write[%04x]=%08x\n", reg, val);
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iowrite32(val, priv->base + reg);
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}
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static void
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mt7530_vtcr(struct mt7530_priv *priv, u32 cmd, u32 val)
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{
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int i;
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mt7530_w32(priv, REG_ESW_VLAN_VTCR, BIT(31) | (cmd << 12) | val);
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for (i = 0; i < 20; i++) {
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u32 val = mt7530_r32(priv, REG_ESW_VLAN_VTCR);
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if ((val & BIT(31)) == 0)
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break;
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udelay(1000);
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}
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if (i == 20)
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printk("mt7530: vtcr timeout\n");
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}
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static int
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mt7530_get_port_pvid(struct switch_dev *dev, int port, int *val)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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if (port >= MT7530_NUM_PORTS)
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return -EINVAL;
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*val = mt7530_r32(priv, REG_ESW_PORT_PPBV1(port));
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*val &= 0xfff;
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return 0;
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}
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static int
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mt7530_set_port_pvid(struct switch_dev *dev, int port, int pvid)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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if (port >= MT7530_NUM_PORTS)
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return -EINVAL;
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if (pvid < MT7530_MIN_VID || pvid > MT7530_MAX_VID)
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return -EINVAL;
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priv->port_entries[port].pvid = pvid;
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return 0;
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}
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static int
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mt7530_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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u32 member;
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u32 etags;
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int i;
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val->len = 0;
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if (val->port_vlan < 0 || val->port_vlan >= MT7530_NUM_VLANS)
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return -EINVAL;
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mt7530_vtcr(priv, 0, val->port_vlan);
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member = mt7530_r32(priv, REG_ESW_VLAN_VAWD1);
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member >>= 16;
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member &= 0xff;
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etags = mt7530_r32(priv, REG_ESW_VLAN_VAWD2);
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for (i = 0; i < MT7530_NUM_PORTS; i++) {
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struct switch_port *p;
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int etag;
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if (!(member & BIT(i)))
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continue;
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p = &val->value.ports[val->len++];
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p->id = i;
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etag = (etags >> (i * 2)) & 0x3;
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if (etag == ETAG_CTRL_TAG)
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p->flags |= BIT(SWITCH_PORT_FLAG_TAGGED);
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else if (etag != ETAG_CTRL_UNTAG)
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printk("vlan egress tag control neither untag nor tag.\n");
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}
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return 0;
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}
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static int
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mt7530_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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u8 member = 0;
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u8 etags = 0;
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int i;
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if (val->port_vlan < 0 || val->port_vlan >= MT7530_NUM_VLANS ||
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val->len > MT7530_NUM_PORTS)
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return -EINVAL;
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for (i = 0; i < val->len; i++) {
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struct switch_port *p = &val->value.ports[i];
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if (p->id >= MT7530_NUM_PORTS)
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return -EINVAL;
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member |= BIT(p->id);
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if (p->flags & BIT(SWITCH_PORT_FLAG_TAGGED))
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etags |= BIT(p->id);
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}
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priv->vlan_entries[val->port_vlan].member = member;
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priv->vlan_entries[val->port_vlan].etags = etags;
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return 0;
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}
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static int
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mt7530_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
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struct switch_val *val)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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int vlan;
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u16 vid;
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vlan = val->port_vlan;
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vid = (u16)val->value.i;
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if (vlan < 0 || vlan >= MT7530_NUM_VLANS)
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return -EINVAL;
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if (vid < MT7530_MIN_VID || vid > MT7530_MAX_VID)
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return -EINVAL;
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priv->vlan_entries[vlan].vid = vid;
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return 0;
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}
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static int
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mt7530_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
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struct switch_val *val)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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u32 vid;
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int vlan;
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vlan = val->port_vlan;
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vid = mt7530_r32(priv, REG_ESW_VLAN_VTIM(vlan));
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if (vlan & 1)
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vid = vid >> 12;
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vid &= 0xfff;
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val->value.i = vid;
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return 0;
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}
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static int
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mt7530_apply_config(struct switch_dev *dev)
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{
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struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
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int i, j;
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if (!priv->global_vlan_enable) {
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for (i = 0; i < MT7530_NUM_PORTS; i++)
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mt7530_w32(priv, REG_ESW_PORT_PCR(i), 0x00ff0000);
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for (i = 0; i < MT7530_NUM_PORTS; i++)
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mt7530_w32(priv, REG_ESW_PORT_PVC(i), 0x810000c0);
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return 0;
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}
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/* set all ports as security mode */
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for (i = 0; i < MT7530_NUM_PORTS; i++)
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mt7530_w32(priv, REG_ESW_PORT_PCR(i), 0x00ff0003);
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/* set all ports as user port */
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for (i = 0; i < MT7530_NUM_PORTS; i++)
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mt7530_w32(priv, REG_ESW_PORT_PVC(i), 0x81000000);
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for (i = 0; i < MT7530_NUM_VLANS; i++) {
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u16 vid = priv->vlan_entries[i].vid;
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u8 member = priv->vlan_entries[i].member;
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u8 etags = priv->vlan_entries[i].etags;
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u32 val;
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||||
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/* vid of vlan */
|
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val = mt7530_r32(priv, REG_ESW_VLAN_VTIM(i));
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if (i % 2 == 0) {
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val &= 0xfff000;
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val |= vid;
|
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} else {
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val &= 0xfff;
|
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val |= (vid << 12);
|
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}
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mt7530_w32(priv, REG_ESW_VLAN_VTIM(i), val);
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||||
|
||||
/* vlan port membership */
|
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if (member)
|
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mt7530_w32(priv, REG_ESW_VLAN_VAWD1, REG_ESW_VLAN_VAWD1_IVL_MAC |
|
||||
REG_ESW_VLAN_VAWD1_VTAG_EN | (member << 16) |
|
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REG_ESW_VLAN_VAWD1_VALID);
|
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else
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mt7530_w32(priv, REG_ESW_VLAN_VAWD1, 0);
|
||||
|
||||
/* egress mode */
|
||||
val = 0;
|
||||
for (j = 0; j < MT7530_NUM_PORTS; j++) {
|
||||
if (etags & BIT(j))
|
||||
val |= ETAG_CTRL_TAG << (j * 2);
|
||||
else
|
||||
val |= ETAG_CTRL_UNTAG << (j * 2);
|
||||
}
|
||||
mt7530_w32(priv, REG_ESW_VLAN_VAWD2, val);
|
||||
|
||||
/* write to vlan table */
|
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mt7530_vtcr(priv, 1, i);
|
||||
}
|
||||
|
||||
/* Port Default PVID */
|
||||
for (i = 0; i < MT7530_NUM_PORTS; i++) {
|
||||
u32 val;
|
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val = mt7530_r32(priv, REG_ESW_PORT_PPBV1(i));
|
||||
val &= ~0xfff;
|
||||
val |= priv->port_entries[i].pvid;
|
||||
mt7530_w32(priv, REG_ESW_PORT_PPBV1(i), val);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
mt7530_get_port_link(struct switch_dev *dev, int port,
|
||||
struct switch_port_link *link)
|
||||
{
|
||||
struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
|
||||
u32 speed, pmsr;
|
||||
|
||||
if (port < 0 || port >= MT7530_NUM_PORTS)
|
||||
return -EINVAL;
|
||||
|
||||
pmsr = mt7530_r32(priv, 0x3008 + (0x100 * port));
|
||||
|
||||
link->link = pmsr & 1;
|
||||
link->duplex = (pmsr >> 1) & 1;
|
||||
speed = (pmsr >> 2) & 3;
|
||||
|
||||
switch (speed) {
|
||||
case 0:
|
||||
link->speed = SWITCH_PORT_SPEED_10;
|
||||
break;
|
||||
case 1:
|
||||
link->speed = SWITCH_PORT_SPEED_100;
|
||||
break;
|
||||
case 2:
|
||||
case 3: /* forced gige speed can be 2 or 3 */
|
||||
link->speed = SWITCH_PORT_SPEED_1000;
|
||||
break;
|
||||
default:
|
||||
link->speed = SWITCH_PORT_SPEED_UNKNOWN;
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct switch_attr mt7530_global[] = {
|
||||
{
|
||||
.type = SWITCH_TYPE_INT,
|
||||
.name = "enable_vlan",
|
||||
.description = "VLAN mode (1:enabled)",
|
||||
.max = 1,
|
||||
.id = MT7530_ATTR_ENABLE_VLAN,
|
||||
.get = mt7530_get_vlan_enable,
|
||||
.set = mt7530_set_vlan_enable,
|
||||
},
|
||||
};
|
||||
|
||||
static const struct switch_attr mt7530_port[] = {
|
||||
};
|
||||
|
||||
static const struct switch_attr mt7530_vlan[] = {
|
||||
{
|
||||
.type = SWITCH_TYPE_INT,
|
||||
.name = "vid",
|
||||
.description = "VLAN ID (0-4094)",
|
||||
.set = mt7530_set_vid,
|
||||
.get = mt7530_get_vid,
|
||||
.max = 4094,
|
||||
},
|
||||
};
|
||||
|
||||
static const struct switch_dev_ops mt7530_ops = {
|
||||
.attr_global = {
|
||||
.attr = mt7530_global,
|
||||
.n_attr = ARRAY_SIZE(mt7530_global),
|
||||
},
|
||||
.attr_port = {
|
||||
.attr = mt7530_port,
|
||||
.n_attr = ARRAY_SIZE(mt7530_port),
|
||||
},
|
||||
.attr_vlan = {
|
||||
.attr = mt7530_vlan,
|
||||
.n_attr = ARRAY_SIZE(mt7530_vlan),
|
||||
},
|
||||
.get_vlan_ports = mt7530_get_vlan_ports,
|
||||
.set_vlan_ports = mt7530_set_vlan_ports,
|
||||
.get_port_pvid = mt7530_get_port_pvid,
|
||||
.set_port_pvid = mt7530_set_port_pvid,
|
||||
.get_port_link = mt7530_get_port_link,
|
||||
.apply_config = mt7530_apply_config,
|
||||
.reset_switch = mt7530_reset_switch,
|
||||
};
|
||||
|
||||
int
|
||||
mt7530_probe(struct device *dev, void __iomem *base, struct mii_bus *bus, int vlan)
|
||||
{
|
||||
struct switch_dev *swdev;
|
||||
struct mt7530_priv *mt7530;
|
||||
struct mt7530_mapping *map;
|
||||
int ret;
|
||||
|
||||
mt7530 = devm_kzalloc(dev, sizeof(struct mt7530_priv), GFP_KERNEL);
|
||||
if (!mt7530)
|
||||
return -ENOMEM;
|
||||
|
||||
mt7530->base = base;
|
||||
mt7530->bus = bus;
|
||||
mt7530->global_vlan_enable = vlan;
|
||||
|
||||
swdev = &mt7530->swdev;
|
||||
if (bus) {
|
||||
swdev->alias = "mt7530";
|
||||
swdev->name = "mt7530";
|
||||
} else {
|
||||
swdev->alias = "mt7620";
|
||||
swdev->name = "mt7620";
|
||||
}
|
||||
swdev->cpu_port = MT7530_CPU_PORT;
|
||||
swdev->ports = MT7530_NUM_PORTS;
|
||||
swdev->vlans = MT7530_NUM_VLANS;
|
||||
swdev->ops = &mt7530_ops;
|
||||
|
||||
ret = register_switch(swdev, NULL);
|
||||
if (ret) {
|
||||
dev_err(dev, "failed to register mt7530\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
map = mt7530_find_mapping(dev->of_node);
|
||||
if (map)
|
||||
mt7530_apply_mapping(mt7530, map);
|
||||
mt7530_apply_config(swdev);
|
||||
|
||||
/* magic vodoo */
|
||||
if (bus && mt7530_r32(mt7530, REG_HWTRAP) != 0x1117edf) {
|
||||
dev_info(dev, "fixing up MHWTRAP register - bootloader probably played with it\n");
|
||||
mt7530_w32(mt7530, REG_HWTRAP, 0x1117edf);
|
||||
}
|
||||
dev_info(dev, "loaded %s driver\n", swdev->name);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user