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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
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
*/
#include <linux/version.h>
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,19)
#define USB2420
#endif
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 {
TD_TYPE, QH_TYPE
} 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;
#else
urb_t *next_queued_urb;
urb_t *prev_queued_urb;
#endif
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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