/***
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*
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* include/rtmac/tdma/tdma.h
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*
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* RTmac - real-time networking media access control subsystem
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* Copyright (C) 2002 Marc Kleine-Budde <kleine-budde@gmx.de>,
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* 2003-2005 Jan Kiszka <Jan.Kiszka@web.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef __TDMA_H_
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#define __TDMA_H_
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#include <rtdm/driver.h>
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#include <rtnet_rtpc.h>
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#include <rtmac/rtmac_disc.h>
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#define RTMAC_TYPE_TDMA 0x0001
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#define TDMA_MAGIC 0x3A0D4D0A
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#define TDMA_FLAG_CALIBRATED 1
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#define TDMA_FLAG_RECEIVED_SYNC 2
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#define TDMA_FLAG_MASTER 3 /* also set for backup masters */
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#define TDMA_FLAG_BACKUP_MASTER 4
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#define TDMA_FLAG_ATTACHED 5
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#define TDMA_FLAG_BACKUP_ACTIVE 6
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#define DEFAULT_SLOT 0
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#define DEFAULT_NRT_SLOT 1
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/* job IDs */
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#define WAIT_ON_SYNC -1
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#define XMIT_SYNC -2
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#define BACKUP_SYNC -3
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#define XMIT_REQ_CAL -4
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#define XMIT_RPL_CAL -5
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struct tdma_priv;
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struct tdma_job {
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struct list_head entry;
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int id;
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unsigned int ref_count;
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};
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#define SLOT_JOB(job) ((struct tdma_slot *)(job))
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struct tdma_slot {
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struct tdma_job head;
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u64 offset;
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unsigned int period;
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unsigned int phasing;
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unsigned int mtu;
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unsigned int size;
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struct rtskb_prio_queue *queue;
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struct rtskb_prio_queue local_queue;
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};
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#define REQUEST_CAL_JOB(job) ((struct tdma_request_cal *)(job))
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struct tdma_request_cal {
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struct tdma_job head;
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struct tdma_priv *tdma;
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u64 offset;
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unsigned int period;
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unsigned int phasing;
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unsigned int cal_rounds;
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u64 *cal_results;
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u64 *result_buffer;
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};
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#define REPLY_CAL_JOB(job) ((struct tdma_reply_cal *)(job))
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struct tdma_reply_cal {
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struct tdma_job head;
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u32 reply_cycle;
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u64 reply_offset;
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struct rtskb *reply_rtskb;
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};
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struct tdma_priv {
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unsigned int magic;
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struct rtnet_device *rtdev;
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char device_name[32];
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struct rtdm_driver api_driver;
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struct rtdm_device api_device;
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#ifdef ALIGN_RTOS_TASK
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__u8 __align[(ALIGN_RTOS_TASK -
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((sizeof(unsigned int) + sizeof(struct rtnet_device *) +
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sizeof(struct rtdm_device)) &
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(ALIGN_RTOS_TASK - 1))) &
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(ALIGN_RTOS_TASK - 1)];
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#endif
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rtdm_task_t worker_task;
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rtdm_event_t worker_wakeup;
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rtdm_event_t xmit_event;
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rtdm_event_t sync_event;
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unsigned long flags;
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unsigned int cal_rounds;
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u32 current_cycle;
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u64 current_cycle_start;
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u64 master_packet_delay_ns;
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nanosecs_rel_t clock_offset;
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struct tdma_job sync_job;
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struct tdma_job *first_job;
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struct tdma_job *current_job;
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volatile unsigned int job_list_revision;
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unsigned int max_slot_id;
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struct tdma_slot **slot_table;
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struct rt_proc_call *calibration_call;
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unsigned char master_hw_addr[MAX_ADDR_LEN];
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rtdm_lock_t lock;
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#ifdef CONFIG_XENO_DRIVERS_NET_TDMA_MASTER
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struct rtskb_pool cal_rtskb_pool;
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u64 cycle_period;
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u64 backup_sync_inc;
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#endif
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#ifdef CONFIG_XENO_OPT_VFILE
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struct list_head list_entry;
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#endif
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};
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extern struct rtmac_disc tdma_disc;
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#define print_jobs() \
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do { \
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struct tdma_job *entry; \
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rtdm_printk("%s:%d - ", __FUNCTION__, __LINE__); \
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list_for_each_entry (entry, &tdma->first_job->entry, entry) \
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rtdm_printk("%d ", entry->id); \
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rtdm_printk("\n"); \
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} while (0)
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#endif /* __TDMA_H_ */
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