source: mainline/uspace/drv/infrastructure/rootamdm37x/rootamdm37x.c@ 712a10b

/*
 * Copyright (c) 2012 Jan Vesely
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
 */

/**
 * @defgroup root_amdm37x TI AM/DM37x platform driver.
 * @brief HelenOS TI AM/DM37x platform driver.
 * @{
 */

/** @file
 */

#include <ddf/driver.h>
#include <ddf/log.h>
#include <errno.h>
#include <ops/hw_res.h>
#include <stdio.h>
#include <ddi.h>

#define NAME  "rootamdm37x"

/** Obtain function soft-state from DDF function node */
#define ROOTMAC_FUN(fnode) \
        ((rootamdm37x_fun_t *) (fnode)->driver_data)

typedef struct {
        hw_resource_list_t hw_resources;
} rootamdm37x_fun_t;

static hw_resource_t ohci_res[] = {
        {
                .type = MEM_RANGE,
                /* See amdm37x TRM page. 3316 for these values */
                .res.io_range = {
                        .address = 0x48064400,
                        .size = 1024,
                        .endianness = LITTLE_ENDIAN
                },
        },
        {
                .type = INTERRUPT,
                .res.interrupt = { .irq = 76 },
        },
};

static hw_resource_t ehci_res[] = {
        {
                .type = MEM_RANGE,
                /* See amdm37x TRM page. 3316 for these values */
                .res.io_range = {
                        .address = 0x48064800,
                        .size = 1024,
                        .endianness = LITTLE_ENDIAN
                },
        },
        {
                .type = INTERRUPT,
                .res.interrupt = { .irq = 77 },
        },
};

static const rootamdm37x_fun_t ohci = {
        .hw_resources = {
            .resources = ohci_res,
            .count = sizeof(ohci_res)/sizeof(ohci_res[0]),
        }
};

static const rootamdm37x_fun_t ehci = {
        .hw_resources = {
            .resources = ehci_res,
            .count = sizeof(ehci_res)/sizeof(ehci_res[0]),
        }
};


static ddf_dev_ops_t rootamdm37x_fun_ops;

static bool rootamdm37x_add_fun(ddf_dev_t *dev, const char *name,
    const char *str_match_id, const rootamdm37x_fun_t *fun)
{
        ddf_msg(LVL_DEBUG, "Adding new function '%s'.", name);
        
        ddf_fun_t *fnode = NULL;
        match_id_t *match_id = NULL;
        
        /* Create new device. */
        fnode = ddf_fun_create(dev, fun_inner, name);
        if (fnode == NULL)
                goto failure;
        
        fnode->driver_data = (void*)fun;
        
        /* Initialize match id list */
        match_id = create_match_id();
        if (match_id == NULL)
                goto failure;
        
        match_id->id = str_match_id;
        match_id->score = 100;
        add_match_id(&fnode->match_ids, match_id);
        
        /* Set provided operations to the device. */
        fnode->ops = &rootamdm37x_fun_ops;
        
        /* Register function. */
        if (ddf_fun_bind(fnode) != EOK) {
                ddf_msg(LVL_ERROR, "Failed binding function %s.", name);
                goto failure;
        }
        
        return true;
        
failure:
        if (match_id != NULL)
                match_id->id = NULL;
        
        if (fnode != NULL) {
                fnode->driver_data = NULL;
                ddf_fun_destroy(fnode);
        }
        
        ddf_msg(LVL_ERROR, "Failed adding function '%s'.", name);
        
        return false;
}

/** Get the root device.
 *
 * @param dev Device which is root of the whole device tree
 *            (both of HW and pseudo devices).
 *
 * @return Zero on success, negative error number otherwise.
 *
 */
static int rootamdm37x_dev_add(ddf_dev_t *dev)
{
        {
        /* Enable USB host clocks */
        uint32_t *reg = NULL;
        const int ret = pio_enable((void*)0x48005400, 8192, (void**)&reg);
        assert(ret == EOK);
        assert(reg);
        /* offset 0x10 (0x4 int32)[0] enables fclk,
         * offset 0x00 (0x0 int32)[0 and 1] enables iclk,
         * offset 0x30 (0xc int32)[0] enables autoidle
         */
        reg[0x4] = 0x1;
        reg[0x0] = 0x3;
        reg[0xc] = 0x1;
        }

        /* Register functions */
        if (!rootamdm37x_add_fun(dev, "ohci", "usb/host=ohci", &ohci))
                ddf_msg(LVL_ERROR, "Failed to add OHCI function for "
                    "BeagleBoard-xM platform.");
        if (!rootamdm37x_add_fun(dev, "ehci", "usb/host=ehci", &ehci))
                ddf_msg(LVL_ERROR, "Failed to add EHCI function for "
                    "BeagleBoard-xM platform.");

        return EOK;
}

/** The root device driver's standard operations. */
static driver_ops_t rootamdm37x_ops = {
        .dev_add = &rootamdm37x_dev_add
};

/** The root device driver structure. */
static driver_t rootamdm37x_driver = {
        .name = NAME,
        .driver_ops = &rootamdm37x_ops
};

static hw_resource_list_t *rootamdm37x_get_resources(ddf_fun_t *fnode)
{
        rootamdm37x_fun_t *fun = ROOTMAC_FUN(fnode);
        assert(fun != NULL);
        
        return &fun->hw_resources;
}

static bool rootamdm37x_enable_interrupt(ddf_fun_t *fun)
{
        /* TODO */
        
        return false;
}

static hw_res_ops_t fun_hw_res_ops = {
        .get_resource_list = &rootamdm37x_get_resources,
        .enable_interrupt = &rootamdm37x_enable_interrupt
};

int main(int argc, char *argv[])
{
        printf("%s: HelenOS AM/DM37x(OMAP37x) platform driver\n", NAME);
        ddf_log_init(NAME, LVL_ERROR);
        rootamdm37x_fun_ops.interfaces[HW_RES_DEV_IFACE] = &fun_hw_res_ops;
        return ddf_driver_main(&rootamdm37x_driver);
}

/**
 * @}
 */