This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / usb / atm / usb_atm.h

diff --git a/drivers/usb/atm/usb_atm.h b/drivers/usb/atm/usb_atm.h
new file mode 100644 (file)
index 0000000..188e917
--- /dev/null
+++ b/drivers/usb/atm/usb_atm.h
@@ -0,0 +1,160 @@
+/******************************************************************************
+ *  usb_atm.h - Generic USB xDSL driver core
+ *
+ *  Copyright (C) 2001, Alcatel
+ *  Copyright (C) 2003, Duncan Sands, SolNegro, Josep Comas
+ *  Copyright (C) 2004, David Woodhouse
+ *
+ *  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., 59
+ *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ ******************************************************************************/
+
+#include <linux/list.h>
+#include <linux/usb.h>
+#include <linux/kref.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <asm/semaphore.h>
+
+#define UDSL_MAX_RCV_URBS              4
+#define UDSL_MAX_SND_URBS              4
+#define UDSL_MAX_RCV_BUFS              8
+#define UDSL_MAX_SND_BUFS              8
+#define UDSL_MAX_RCV_BUF_SIZE          1024    /* ATM cells */
+#define UDSL_MAX_SND_BUF_SIZE          1024    /* ATM cells */
+#define UDSL_DEFAULT_RCV_URBS          2
+#define UDSL_DEFAULT_SND_URBS          2
+#define UDSL_DEFAULT_RCV_BUFS          4
+#define UDSL_DEFAULT_SND_BUFS          4
+#define UDSL_DEFAULT_RCV_BUF_SIZE      64      /* ATM cells */
+#define UDSL_DEFAULT_SND_BUF_SIZE      64      /* ATM cells */
+
+#define ATM_CELL_HEADER                        (ATM_CELL_SIZE - ATM_CELL_PAYLOAD)
+#define UDSL_NUM_CELLS(x)              (((x) + ATM_AAL5_TRAILER + ATM_CELL_PAYLOAD - 1) / ATM_CELL_PAYLOAD)
+
+/* receive */
+
+struct udsl_receive_buffer {
+       struct list_head list;
+       unsigned char *base;
+       unsigned int filled_cells;
+};
+
+struct udsl_receiver {
+       struct list_head list;
+       struct udsl_receive_buffer *buffer;
+       struct urb *urb;
+       struct udsl_instance_data *instance;
+};
+
+struct udsl_vcc_data {
+       /* vpi/vci lookup */
+       struct list_head list;
+       short vpi;
+       int vci;
+       struct atm_vcc *vcc;
+
+       /* raw cell reassembly */
+       struct sk_buff *sarb;
+};
+
+/* send */
+
+struct udsl_send_buffer {
+       struct list_head list;
+       unsigned char *base;
+       unsigned char *free_start;
+       unsigned int free_cells;
+};
+
+struct udsl_sender {
+       struct list_head list;
+       struct udsl_send_buffer *buffer;
+       struct urb *urb;
+       struct udsl_instance_data *instance;
+};
+
+struct udsl_control {
+       struct atm_skb_data atm_data;
+       unsigned int num_cells;
+       unsigned int num_entire;
+       unsigned int pdu_padding;
+       unsigned char cell_header[ATM_CELL_HEADER];
+       unsigned char aal5_trailer[ATM_AAL5_TRAILER];
+};
+
+#define UDSL_SKB(x)            ((struct udsl_control *)(x)->cb)
+
+/* main driver data */
+
+enum udsl_status {
+       UDSL_NO_FIRMWARE,
+       UDSL_LOADING_FIRMWARE,
+       UDSL_LOADED_FIRMWARE
+};
+
+struct udsl_instance_data {
+       struct kref refcount;
+       struct semaphore serialize;
+
+       /* USB device part */
+       struct usb_device *usb_dev;
+       char description[64];
+       int data_endpoint;
+       int snd_padding;
+       int rcv_padding;
+       const char *driver_name;
+
+       /* ATM device part */
+       struct atm_dev *atm_dev;
+       struct list_head vcc_list;
+
+       /* firmware */
+       int (*firmware_wait) (struct udsl_instance_data *);
+       enum udsl_status status;
+       wait_queue_head_t firmware_waiters;
+
+       /* receive */
+       struct udsl_receiver receivers[UDSL_MAX_RCV_URBS];
+       struct udsl_receive_buffer receive_buffers[UDSL_MAX_RCV_BUFS];
+
+       spinlock_t receive_lock;
+       struct list_head spare_receivers;
+       struct list_head filled_receive_buffers;
+
+       struct tasklet_struct receive_tasklet;
+       struct list_head spare_receive_buffers;
+
+       /* send */
+       struct udsl_sender senders[UDSL_MAX_SND_URBS];
+       struct udsl_send_buffer send_buffers[UDSL_MAX_SND_BUFS];
+
+       struct sk_buff_head sndqueue;
+
+       spinlock_t send_lock;
+       struct list_head spare_senders;
+       struct list_head spare_send_buffers;
+
+       struct tasklet_struct send_tasklet;
+       struct sk_buff *current_skb;                    /* being emptied */
+       struct udsl_send_buffer *current_buffer;        /* being filled */
+       struct list_head filled_send_buffers;
+};
+
+extern int udsl_instance_setup(struct usb_device *dev,
+                              struct udsl_instance_data *instance);
+extern void udsl_instance_disconnect(struct udsl_instance_data *instance);
+extern void udsl_get_instance(struct udsl_instance_data *instance);
+extern void udsl_put_instance(struct udsl_instance_data *instance);