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 * Dummy Zaptel Driver for Zapata Telephony interface
 * Written by Robert Pleh <robert.pleh@hermes.si>
 * Copyright (C) 2002, Hermes Softlab
 * All rights reserved.
 * 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
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.

#include <linux/version.h>
#define USB2420

struct ztdummy {
      struct zt_span span;
      struct zt_chan chan;

/* Uhci definitions and structures - from file usb-uhci.h */
#define TD_CTRL_IOC           (1 << 24)   /* Interrupt on Complete */
#define USBSTS 2

typedef enum {
} uhci_desc_type_t;

typedef struct {
      __u32 link;
      __u32 status;
      __u32 info;
      __u32 buffer;
} uhci_td_t, *puhci_td_t;

typedef struct {
      __u32 head;
      __u32 element;          /* Queue element pointer */
} uhci_qh_t, *puhci_qh_t;

typedef struct {
      union {
            uhci_td_t td;
            uhci_qh_t qh;
      } hw;
      uhci_desc_type_t type;
      dma_addr_t dma_addr;
      struct list_head horizontal;
      struct list_head vertical;
      struct list_head desc_list;
      int last_used;
} uhci_desc_t, *puhci_desc_t;

typedef struct {
      struct list_head desc_list;   // list pointer to all corresponding TDs/QHs associated with this request
      dma_addr_t setup_packet_dma;
      dma_addr_t transfer_buffer_dma;
      unsigned long started;
#ifdef USB2420
        struct urb *next_queued_urb;    // next queued urb for this EP
        struct urb *prev_queued_urb;
        urb_t *next_queued_urb;         
        urb_t *prev_queued_urb;
      uhci_desc_t *bottom_qh;
      uhci_desc_t *next_qh;         // next helper QH
      char use_loop;
      char flags;
} urb_priv_t, *purb_priv_t;

struct virt_root_hub {
      int devnum;       /* Address of Root Hub endpoint */
      void *urb;
      void *int_addr;
      int send;
      int interval;
      int numports;
      int c_p_r[8];
      struct timer_list rh_int_timer;

typedef struct uhci {
      int irq;
      unsigned int io_addr;
      unsigned int io_size;
      unsigned int maxports;
      int running;

      int apm_state;

      struct uhci *next;      // chain of uhci device contexts

      struct list_head urb_list;    // list of all pending urbs

      spinlock_t urb_list_lock;     // lock to keep consistency

      int unlink_urb_done;
      atomic_t avoid_bulk;

      struct usb_bus *bus;    // our bus

      __u32 *framelist;
      dma_addr_t framelist_dma;
      uhci_desc_t **iso_td;
      uhci_desc_t *int_chain[8];
      uhci_desc_t *ls_control_chain;
      uhci_desc_t *control_chain;
      uhci_desc_t *bulk_chain;
      uhci_desc_t *chain_end;
      uhci_desc_t *td1ms;
      uhci_desc_t *td32ms;
      struct list_head free_desc;
      spinlock_t qh_lock;
      spinlock_t td_lock;
      struct virt_root_hub rh;      //private data of the virtual root hub
      int loop_usage;            // URBs using bandwidth reclamation

      struct list_head urb_unlinked;      // list of all unlinked  urbs
      long timeout_check;
      int timeout_urbs;
      struct pci_dev *uhci_pci;
      struct pci_pool *desc_pool;
      long last_error_time;          // last error output in uhci_interrupt()
} uhci_t, *puhci_t;

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