source: mainline/uspace/drv/ohci/main.c@ da88eb82

/*
 * Copyright (c) 2011 Jan Vesely
 * Copyright (c) 2011 Vojtech Horky
 * 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.
 */
/** @addtogroup drvusbohci
 * @{
 */
/** @file
 * Main routines of OHCI driver.
 */
#include <ddf/driver.h>
#include <ddf/interrupt.h>
#include <device/hw_res.h>
#include <errno.h>
#include <str_error.h>

#include <usb_iface.h>
#include <usb/ddfiface.h>
#include <usb/debug.h>

#include "pci.h"
#include "iface.h"
#include "hc.h"

static int ohci_add_device(ddf_dev_t *device);
static int get_hc_handle(ddf_fun_t *fun, devman_handle_t *handle)
{
        assert(handle);
  assert(fun != NULL);

  *handle = fun->handle;
  return EOK;
}
/*----------------------------------------------------------------------------*/
static int get_address(
    ddf_fun_t *fun, devman_handle_t handle, usb_address_t *address)
{
        assert(fun);
        usb_device_keeper_t *manager = &fun_to_hc(fun)->manager;
  usb_address_t addr = usb_device_keeper_find(manager, handle);
  if (addr < 0) {
    return addr;
  }

  if (address != NULL) {
    *address = addr;
  }

  return EOK;
}
/*----------------------------------------------------------------------------*/
/** IRQ handling callback, identifies device
 *
 * @param[in] dev DDF instance of the device to use.
 * @param[in] iid (Unused).
 * @param[in] call Pointer to the call that represents interrupt.
 */
static void irq_handler(ddf_dev_t *dev, ipc_callid_t iid, ipc_call_t *call)
{
        assert(dev);
        hc_t *hc = (hc_t*)dev->driver_data;
        assert(hc);
        hc_interrupt(hc, 0);
}
/*----------------------------------------------------------------------------*/
static driver_ops_t ohci_driver_ops = {
        .add_device = ohci_add_device,
};
/*----------------------------------------------------------------------------*/
static driver_t ohci_driver = {
        .name = NAME,
        .driver_ops = &ohci_driver_ops
};
/*----------------------------------------------------------------------------*/
static usb_iface_t hc_usb_iface = {
        .get_address = get_address,
        .get_hc_handle = get_hc_handle,
};
/*----------------------------------------------------------------------------*/
static ddf_dev_ops_t hc_ops = {
        .interfaces[USB_DEV_IFACE] = &hc_usb_iface,
        .interfaces[USBHC_DEV_IFACE] = &hc_iface,
};
/*----------------------------------------------------------------------------*/
/** Initializes a new ddf driver instance of OHCI hcd.
 *
 * @param[in] device DDF instance of the device to initialize.
 * @return Error code.
 */
static int ohci_add_device(ddf_dev_t *device)
{
        assert(device);
#define CHECK_RET_RETURN(ret, message...) \
if (ret != EOK) { \
        usb_log_error(message); \
        return ret; \
}

        uintptr_t mem_reg_base = 0;
        size_t mem_reg_size = 0;
        int irq = 0;

        int ret =
            pci_get_my_registers(device, &mem_reg_base, &mem_reg_size, &irq);
        CHECK_RET_RETURN(ret,
            "Failed(%d) to get memory addresses:.\n", ret, device->handle);
        usb_log_info("Memory mapped regs at 0x%X (size %zu), IRQ %d.\n",
            mem_reg_base, mem_reg_size, irq);

        ret = pci_disable_legacy(device);
        CHECK_RET_RETURN(ret,
            "Failed(%d) disable legacy USB: %s.\n", ret, str_error(ret));

        hc_t *hcd = malloc(sizeof(hc_t));
        if (hcd == NULL) {
                usb_log_error("Failed to allocate OHCI driver.\n");
                return ENOMEM;
        }

        ddf_fun_t *hc_fun = ddf_fun_create(device, fun_exposed, "ohci-hc");
        if (hc_fun == NULL) {
                usb_log_error("Failed to create OHCI function.\n");
                free(hcd);
                return ENOMEM;
        }


        bool interrupts = false;
#ifdef CONFIG_USBHC_NO_INTERRUPTS
        usb_log_warning("Interrupts disabled in OS config, " \
            "falling back to polling.\n");
#else
        ret = pci_enable_interrupts(device);
        if (ret != EOK) {
                usb_log_warning("Failed to enable interrupts: %s.\n",
                    str_error(ret));
                usb_log_info("HW interrupts not available, " \
                    "falling back to polling.\n");
        } else {
                usb_log_debug("Hw interrupts enabled.\n");
                interrupts = true;
        }
#endif

        ret = hc_init(hcd, hc_fun, device, mem_reg_base, mem_reg_size, interrupts);
        if (ret != EOK) {
                usb_log_error("Failed to initialize OHCI driver.\n");
                free(hcd);
                return ret;
        }

        ret = register_interrupt_handler(device, irq, irq_handler, NULL);

        hc_fun->ops = &hc_ops;
        ret = ddf_fun_bind(hc_fun);
        if (ret != EOK) {
                usb_log_error("Failed to bind OHCI function.\n");
                ddf_fun_destroy(hc_fun);
                free(hcd);
                return ret;
        }
        hc_fun->driver_data = hcd;

        fid_t later = fibril_create((int(*)(void*))hc_register_hub, hcd);
        fibril_add_ready(later);

        usb_log_info("Controlling new OHCI device `%s' (handle %llu).\n",
            device->name, device->handle);

        return EOK;
#undef CHECK_RET_RETURN
}
/*----------------------------------------------------------------------------*/
/** Initializes global driver structures (NONE).
 *
 * @param[in] argc Nmber of arguments in argv vector (ignored).
 * @param[in] argv Cmdline argument vector (ignored).
 * @return Error code.
 *
 * Driver debug level is set here.
 */
int main(int argc, char *argv[])
{
        usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
        sleep(5);
        return ddf_driver_main(&ohci_driver);
}
/**
 * @}
 */