msp_eth.c

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/*
 * The setup file for ethernet related hardware on PMC-Sierra MSP processors.
 *
 * Copyright 2010 PMC-Sierra, Inc.
 *
 *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  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.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <msp_regs.h>
#include <msp_int.h>
#include <msp_gpio_macros.h>


#define MSP_ETHERNET_GPIO0  14
#define MSP_ETHERNET_GPIO1  15
#define MSP_ETHERNET_GPIO2  16

#ifdef CONFIG_MSP_HAS_TSMAC
#define MSP_TSMAC_SIZE  0x10020
#define MSP_TSMAC_ID    "pmc_tsmac"

static struct resource msp_tsmac0_resources[] = {
    [0] = {
        .start  = MSP_MAC0_BASE,
        .end    = MSP_MAC0_BASE + MSP_TSMAC_SIZE - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = MSP_INT_MAC0,
        .end    = MSP_INT_MAC0,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct resource msp_tsmac1_resources[] = {
    [0] = {
        .start  = MSP_MAC1_BASE,
        .end    = MSP_MAC1_BASE + MSP_TSMAC_SIZE - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = MSP_INT_MAC1,
        .end    = MSP_INT_MAC1,
        .flags  = IORESOURCE_IRQ,
    },
};
static struct resource msp_tsmac2_resources[] = {
    [0] = {
        .start  = MSP_MAC2_BASE,
        .end    = MSP_MAC2_BASE + MSP_TSMAC_SIZE - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = MSP_INT_SAR,
        .end    = MSP_INT_SAR,
        .flags  = IORESOURCE_IRQ,
    },
};


static struct platform_device tsmac_device[] = {
    [0] = {
        .name   = MSP_TSMAC_ID,
        .id = 0,
        .num_resources = ARRAY_SIZE(msp_tsmac0_resources),
        .resource = msp_tsmac0_resources,
    },
    [1] = {
        .name   = MSP_TSMAC_ID,
        .id = 1,
        .num_resources = ARRAY_SIZE(msp_tsmac1_resources),
        .resource = msp_tsmac1_resources,
    },
    [2] = {
        .name   = MSP_TSMAC_ID,
        .id = 2,
        .num_resources = ARRAY_SIZE(msp_tsmac2_resources),
        .resource = msp_tsmac2_resources,
    },
};
#define msp_eth_devs    tsmac_device

#else
/* If it is not TSMAC assume MSP_ETH (100Mbps) */
#define MSP_ETH_ID  "pmc_mspeth"
#define MSP_ETH_SIZE    0xE0
static struct resource msp_eth0_resources[] = {
    [0] = {
        .start  = MSP_MAC0_BASE,
        .end    = MSP_MAC0_BASE + MSP_ETH_SIZE - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = MSP_INT_MAC0,
        .end    = MSP_INT_MAC0,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct resource msp_eth1_resources[] = {
    [0] = {
        .start  = MSP_MAC1_BASE,
        .end    = MSP_MAC1_BASE + MSP_ETH_SIZE - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = MSP_INT_MAC1,
        .end    = MSP_INT_MAC1,
        .flags  = IORESOURCE_IRQ,
    },
};



static struct platform_device mspeth_device[] = {
    [0] = {
        .name   = MSP_ETH_ID,
        .id = 0,
        .num_resources = ARRAY_SIZE(msp_eth0_resources),
        .resource = msp_eth0_resources,
    },
    [1] = {
        .name   = MSP_ETH_ID,
        .id = 1,
        .num_resources = ARRAY_SIZE(msp_eth1_resources),
        .resource = msp_eth1_resources,
    },

};
#define msp_eth_devs    mspeth_device

#endif
int __init msp_eth_setup(void)
{
    int i, ret = 0;

    /* Configure the GPIO and take the ethernet PHY out of reset */
    msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO0);
    msp_gpio_pin_hi(MSP_ETHERNET_GPIO0);

#ifdef CONFIG_MSP_HAS_TSMAC
    /* 3 phys on boards with TSMAC */
    msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO1);
    msp_gpio_pin_hi(MSP_ETHERNET_GPIO1);

    msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO2);
    msp_gpio_pin_hi(MSP_ETHERNET_GPIO2);
#endif
    for (i = 0; i < ARRAY_SIZE(msp_eth_devs); i++) {
        ret = platform_device_register(&msp_eth_devs[i]);
        printk(KERN_INFO "device: %d, return value = %d\n", i, ret);
        if (ret) {
            platform_device_unregister(&msp_eth_devs[i]);
            break;
        }
    }

    if (ret)
        printk(KERN_WARNING "Could not initialize "
                        "MSPETH device structures.\n");

    return ret;
}
subsys_initcall(msp_eth_setup);