/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2007 AMD
 * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
 *
 * 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; version 2 of the License.
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
 */

#ifndef USBDEBUG_H
#define USBDEBUG_H

#define EHCI_BAR_INDEX		0x10

#ifndef __PRE_RAM__
#if !CONFIG_USBDEBUG
#define pci_ehci_read_resources pci_dev_read_resources
#else
/* Relocation of EHCI Debug Port BAR
 *
 * PCI EHCI controller with Debug Port capability shall replace
 * pci_dev_read_resources() with pci_ehci_read_resources() in its
 * declaration of device_operations for .read_resources.
 * This installs a hook to reconfigure usbdebug when resource allocator
 * assigns a new BAR for the device.
 */
struct device;
void pci_ehci_read_resources(struct device *dev);
#endif
#endif

struct ehci_debug_info {
        void *ehci_caps;
        void *ehci_regs;
        void *ehci_debug;
        u32 devnum;
        u32 endpoint_out;
        u32 endpoint_in;
        char buf[8];
        u8 bufidx;
        u8 status;
};

#define DBGP_EP_VALID		(1<<0)
#define DBGP_EP_ENABLED		(1<<1)
#define DBGP_EP_STATMASK	(DBGP_EP_VALID | DBGP_EP_ENABLED)

void enable_usbdebug(unsigned int port);
int dbgp_bulk_write_x(struct ehci_debug_info *dbg_info, const char *bytes, int size);
int dbgp_bulk_read_x(struct ehci_debug_info *dbg_info, void *data, int size);
void set_debug_port(unsigned port);
int early_usbdebug_init(void);

int dbgp_ep_is_active(struct ehci_debug_info *dbg_info);
void usbdebug_tx_byte(struct ehci_debug_info *info, unsigned char data);
void usbdebug_tx_flush(struct ehci_debug_info *info);
int usbdebug_init(unsigned ehci_bar, unsigned offset, struct ehci_debug_info *info);
#endif