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/*
* l2switch.c
*
* Sub-architcture dependant initialization code for the Freescale
* MVF family L2 Switch module.
*
* based on 5441X.
*
* Copyright (C) 2010-2012 Freescale Semiconductor, Inc. All Rights Reserved.
* ShrekWu B16972@freescale.com
*
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include <asm/traps.h>
#include <asm/mvf_switch.h>
#include <mach/hardware.h>
#include <asm/mach/arch.h>
#if (defined(CONFIG_SOC_IMX28) || defined(CONFIG_ARCH_MX6)) || defined(CONFIG_ARCH_MVF) \
&& defined(CONFIG_FEC_1588)
#define CONFIG_ENHANCED_BD
#endif
// base address
//#define FEC_ETH0 0x400D0000
//#define FEC_ETH1 0x400D1000
//#define L2SWITCH_1 0x400E8000
#define L2SWITCH_ATBL 0x400EC000
static unsigned char switch_mac_default[] = {
// 0x00, 0x04, 0x9F, 0x00, 0xB3, 0x49,
0xae, 0xc6, 0x09, 0x97, 0x21, 0x01,
};
static unsigned char switch_mac_addr[6];
static void switch_request_intrs(struct net_device *dev,
irqreturn_t switch_net_irq_handler(int irq, void *private),
void *irq_privatedata)
{
struct switch_enet_private *fep;
int b;
static const struct idesc {
char *name;
unsigned short irq;
} *idp, id[] = {
{ "esw_isr", MXC_INT_ENET_SWITCH},
{ NULL },
};
fep = netdev_priv(dev);
/*intrruption L2 ethernet SWITCH */
/* Setup interrupt handlers. */
for (idp = id; idp->name; idp++) {
if (request_irq(idp->irq,
switch_net_irq_handler, 0,idp->name, irq_privatedata) != 0)
printk(KERN_ERR "FEC: Could not alloc %s IRQ(%d)!\n",
idp->name, idp->irq);
printk(KERN_INFO "L2 Switch: %s IRQ(%d) installed.!\n", idp->name, idp->irq);
}
}
static void switch_set_mii(struct net_device *dev)
{
struct switch_enet_private *fep = netdev_priv(dev);
volatile switch_t *fecp;
writel((MCF_FEC_RCR_PROM | MCF_FEC_RCR_RMII_MODE | MCF_FEC_RCR_MAX_FL(1522) | MCF_FEC_RCR_CRC_FWD), fep->fec[0] + FEC_R_CNTRL);
writel((MCF_FEC_RCR_PROM | MCF_FEC_RCR_RMII_MODE | MCF_FEC_RCR_MAX_FL(1522) | MCF_FEC_RCR_CRC_FWD), fep->fec[1] + FEC_R_CNTRL);
writel(MCF_FEC_TCR_FDEN, fep->fec[0] + FEC_X_CNTRL);
writel(MCF_FEC_TCR_FDEN, fep->fec[1] + FEC_X_CNTRL);
#ifdef CONFIG_ENHANCED_BD
writel(MCF_FEC_ECR_ETHER_EN | MCF_FEC_ECR_ENA_1588 |MCF_FEC_ECR_SWAP, fep->fec[0] + FEC_ECNTRL);
writel(MCF_FEC_ECR_ETHER_EN | MCF_FEC_ECR_ENA_1588 |MCF_FEC_ECR_SWAP, fep->fec[1] + FEC_ECNTRL);
#else
writel(MCF_FEC_ECR_ETHER_EN |MCF_FEC_ECR_SWAP, fep->fec[0] + FEC_ECNTRL);
writel(MCF_FEC_ECR_ETHER_EN |MCF_FEC_ECR_SWAP, fep->fec[1] + FEC_ECNTRL);
#endif
writel( MVF_MII_SWITCH_SPEED, fep->fec[0] + FEC_MII_SPEED);
writel( MVF_MII_SWITCH_SPEED, fep->fec[1] + FEC_MII_SPEED);
}
static void switch_get_mac(struct net_device *dev)
{
struct switch_enet_private *fep = netdev_priv(dev);
volatile switch_t *fecp;
unsigned char *iap;
fecp = fep->hwp;
if (FEC_FLASHMAC) {
/*
* Get MAC address from FLASH.
* If it is all 1's or 0's, use the default.
*/
iap = FEC_FLASHMAC;
if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
(iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
iap = switch_mac_default;
if ((iap[0] == 0xff) && (iap[1] == 0xff) &&
(iap[2] == 0xff) && (iap[3] == 0xff) &&
(iap[4] == 0xff) && (iap[5] == 0xff))
iap = switch_mac_default;
} else {
iap = &switch_mac_addr[0];
if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
(iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
iap = switch_mac_default;
if ((iap[0] == 0xff) && (iap[1] == 0xff) &&
(iap[2] == 0xff) && (iap[3] == 0xff) &&
(iap[4] == 0xff) && (iap[5] == 0xff))
iap = switch_mac_default;
}
memcpy(dev->dev_addr, iap, ETH_ALEN);
/* Adjust MAC if using default MAC address */
if (iap == switch_mac_default)
dev->dev_addr[ETH_ALEN-1] = switch_mac_default[ETH_ALEN-1] +
fep->index;
}
static void switch_enable_phy_intr(void)
{
}
static void switch_disable_phy_intr(void)
{
}
static void switch_phy_ack_intr(void)
{
}
static void switch_localhw_setup(void)
{
}
static void switch_uncache(unsigned long addr)
{
}
static void switch_platform_flush_cache(void)
{
}
/*
* Define the fixed address of the FEC hardware.
*/
static unsigned int switch_platform_hw[] = {
MVF_ETH_L2_SW_BASE_ADDR,
L2SWITCH_ATBL,
};
static unsigned int fec_platform_hw[] = {
MVF_ENET0_IEEE1588_BASE_ADDR,
MVF_ENET1_IEEE1588_BASE_ADDR,
};
static struct mvf_switch_platform_data mvf_switch_data = {
.hash_table = 0,
.fec_hw = fec_platform_hw,
.switch_hw = switch_platform_hw,
.request_intrs = switch_request_intrs,
.set_mii = switch_set_mii,
.get_mac = switch_get_mac,
.enable_phy_intr = switch_enable_phy_intr,
.disable_phy_intr = switch_disable_phy_intr,
.phy_ack_intr = switch_phy_ack_intr,
.localhw_setup = switch_localhw_setup,
.uncache = switch_uncache,
.platform_flush_cache = switch_platform_flush_cache,
};
// non-used-structure
static struct resource l2switch_resources[] = {
[0] = {
.start = MVF_ETH_L2_SW_BASE_ADDR,
.end = MVF_ETH_L2_SW_BASE_ADDR+0x1000 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = MXC_INT_ENET_SWITCH,
.end = MXC_INT_ENET_SWITCH,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = AIPS1_OFF_BASE_ADDR + 0x4F000,
.end = AIPS1_OFF_BASE_ADDR + 0x4F000 + 0x1000 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device l2switch_mvf_device = {
.name = "mvf-switch",
.id = 0,
.resource = l2switch_resources,
.num_resources = ARRAY_SIZE(l2switch_resources),
.dev = {
.platform_data = &mvf_switch_data,
.coherent_dma_mask = ~0, /* $$$ REVISIT */
}
};
static int __init mvf_switch_dev_init(void)
{
int retval = 0;
retval = platform_device_register(&l2switch_mvf_device);
if (retval < 0) {
printk(KERN_ERR "MVF L2Switch: platform_device_register"
" failed with code=%d\n", retval);
}
return retval;
}
static int __init param_switch_addr_setup(char *str)
{
char *end;
int i;
#if 0
for (i = 0; i < 6; i++) {
switch_mac_addr[i] = str ? simple_strtoul(str, &end, 16) : 0;
if (str)
str = (*end ) ? end + 1 : end;
}
#endif
return 0;
}
__setup("switchaddr=", param_switch_addr_setup);
arch_initcall(mvf_switch_dev_init);
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