remove support for the Digium TC400 transcoder card; the interace to this card has been completely redesigned, and the new interface will only be present in DAHDI; TC400 users will need to upgrade to DAHDI 2.0.0 to continue using their transcoder cards

git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.4@4469 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 0 insertions, 491 deletions

diff --git a/kernel/zttranscode.c b/kernel/zttranscode.c
deleted file mode 100644
index 6a441df..0000000
--- a/kernel/zttranscode.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * Transcoder Interface for Zaptel
- *
- * Written by Mark Spencer <markster@digium.com>
- *
- * Copyright (C) 2006-2007, Digium, Inc.
- *
- * 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/kernel.h>
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/slab.h>
-#include <linux/kmod.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <linux/page-flags.h>
-#include <asm/io.h>
-#ifdef CONFIG_DEVFS_FS
-#include <linux/devfs_fs_kernel.h>
-#endif
-#ifdef STANDALONE_ZAPATA
-#include "zaptel.h"
-#else
-#include <linux/zaptel.h>
-#endif
-#ifdef LINUX26
-#include <linux/moduleparam.h>
-#endif
-
-static int debug = 0;
-static struct zt_transcoder *trans;
-static spinlock_t translock = SPIN_LOCK_UNLOCKED;
-
-EXPORT_SYMBOL(zt_transcoder_register);
-EXPORT_SYMBOL(zt_transcoder_unregister);
-EXPORT_SYMBOL(zt_transcoder_alert);
-EXPORT_SYMBOL(zt_transcoder_alloc);
-EXPORT_SYMBOL(zt_transcoder_free);
-
-struct zt_transcoder *zt_transcoder_alloc(int numchans)
-{
-	struct zt_transcoder *ztc;
-	unsigned int x;
-	size_t size = sizeof(*ztc) + (sizeof(ztc->channels[0]) * numchans);
-
-	if (!(ztc = kmalloc(size, GFP_KERNEL)))
-		return NULL;
-
-	memset(ztc, 0, size);
-	strcpy(ztc->name, "<unspecified>");
-	ztc->numchannels = numchans;
-	for (x=0;x<ztc->numchannels;x++) {
-		init_waitqueue_head(&ztc->channels[x].ready);
-		ztc->channels[x].parent = ztc;
-		ztc->channels[x].offset = x;
-		ztc->channels[x].chan_built = 0;
-		ztc->channels[x].built_fmts = 0;
-	}
-
-	return ztc;
-}
-
-static int schluffen(wait_queue_head_t *q)
-{
-	DECLARE_WAITQUEUE(wait, current);
-
-	add_wait_queue(q, &wait);
-	current->state = TASK_INTERRUPTIBLE;
-
-	if (!signal_pending(current))
-		schedule();
-
-	current->state = TASK_RUNNING;
-	remove_wait_queue(q, &wait);
-
-	if (signal_pending(current))
-		return -ERESTARTSYS;
-
-	return 0;
-}
-
-void zt_transcoder_free(struct zt_transcoder *ztc)
-{
-	kfree(ztc);
-}
-
-/* Register a transcoder */
-int zt_transcoder_register(struct zt_transcoder *tc)
-{
-	struct zt_transcoder *cur;
-	int res = -EBUSY;
-
-	spin_lock(&translock);
-	for (cur = trans; cur; cur = cur->next) {
-		if (cur == tc) {
-			spin_unlock(&translock);
-			return res;
-		}
-	}
-
-	tc->next = trans;
-	trans = tc;
-	printk("Registered codec translator '%s' with %d transcoders (srcs=%08x, dsts=%08x)\n", 
-	       tc->name, tc->numchannels, tc->srcfmts, tc->dstfmts);
-	res = 0;
-	spin_unlock(&translock);
-
-	return res;
-}
-
-/* Unregister a transcoder */
-int zt_transcoder_unregister(struct zt_transcoder *tc) 
-{
-	struct zt_transcoder *cur, *prev;
-	int res = -EINVAL;
-
-	spin_lock(&translock);
-	for (cur = trans, prev = NULL; cur; prev = cur, cur = cur->next) {
-		if (cur == tc)
-			break;
-	}
-
-	if (!cur) {
-		spin_unlock(&translock);
-		return res;
-	}
-
-	if (prev)
-		prev->next = tc->next;
-	else
-		trans = tc->next;
-	tc->next = NULL;
-	printk("Unregistered codec translator '%s' with %d transcoders (srcs=%08x, dsts=%08x)\n", 
-	       tc->name, tc->numchannels, tc->srcfmts, tc->dstfmts);
-	res = 0;
-	spin_unlock(&translock);
-
-	return res;
-}
-
-/* Alert a transcoder */
-int zt_transcoder_alert(struct zt_transcoder_channel *ztc)
-{
-	if (debug)
-		printk("ZT Transcoder Alert!\n");
-	if (ztc->tch)
-		ztc->tch->status &= ~ZT_TC_FLAG_BUSY;
-	wake_up_interruptible(&ztc->ready);
-
-	return 0;
-}
-
-static int zt_tc_open(struct inode *inode, struct file *file)
-{
-	struct zt_transcoder_channel *ztc;
-	struct zt_transcode_header *zth;
-	struct page *page;
-
-	if (!(ztc = kmalloc(sizeof(*ztc), GFP_KERNEL)))
-		return -ENOMEM;
-
-	if (!(zth = kmalloc(sizeof(*zth), GFP_KERNEL | GFP_DMA))) {
-		kfree(ztc);
-		return -ENOMEM;
-	}
-	
-	memset(ztc, 0, sizeof(*ztc));
-	memset(zth, 0, sizeof(*zth));
-	ztc->flags = ZT_TC_FLAG_TRANSIENT | ZT_TC_FLAG_BUSY;
-	ztc->tch = zth;
-	if (debug)
-		printk("Allocated Transcoder Channel, header is at %p!\n", zth);
-	zth->magic = ZT_TRANSCODE_MAGIC;
-	file->private_data = ztc;
-	for (page = virt_to_page(zth);
-	     page < virt_to_page((unsigned long) zth + sizeof(*zth));
-	     page++)
-		SetPageReserved(page);
-
-	return 0;
-}
-
-static void ztc_release(struct zt_transcoder_channel *ztc)
-{
-	struct zt_transcode_header *zth = ztc->tch;
-	struct page *page;
-
-	if (!ztc)
-		return;
-
-	ztc->flags &= ~(ZT_TC_FLAG_BUSY);
-
-	if(ztc->tch) {
-		for (page = virt_to_page(zth);
-		     page < virt_to_page((unsigned long) zth + sizeof(*zth));
-		     page++)
-			ClearPageReserved(page);
-		kfree(ztc->tch);
-	}
-
-	ztc->tch = NULL;
-	/* Actually reset the transcoder channel */
-	if (ztc->flags & ZT_TC_FLAG_TRANSIENT)
-		kfree(ztc);
-	if (debug)
-		printk("Released Transcoder!\n");
-}
-
-static int zt_tc_release(struct inode *inode, struct file *file)
-{
-	ztc_release(file->private_data);
-
-	return 0;
-}
-
-static int do_reset(struct zt_transcoder_channel **ztc)
-{
-	struct zt_transcoder_channel *newztc = NULL, *origztc = NULL;
-	struct zt_transcode_header *zth = (*ztc)->tch;
-	struct zt_transcoder *tc;
-	unsigned int x;
-	unsigned int match = 0;
-
-	if (((*ztc)->srcfmt != zth->srcfmt) ||
-	    ((*ztc)->dstfmt != zth->dstfmt)) {
-		/* Find new transcoder */
-		spin_lock(&translock);
-		for (tc = trans; tc && !newztc; tc = tc->next) {
-			if (!(tc->srcfmts & zth->srcfmt))
-				continue;
-
-			if (!(tc->dstfmts & zth->dstfmt))
-				continue;
-
-			match = 1;
-			for (x = 0; x < tc->numchannels; x++) {
-				if (tc->channels[x].flags & ZT_TC_FLAG_BUSY)
-					continue;
-				if ((tc->channels[x].chan_built) && ((zth->srcfmt | zth->dstfmt) != tc->channels[x].built_fmts))
-					continue;
-
-				newztc = &tc->channels[x];
-				newztc->flags = ZT_TC_FLAG_BUSY;
-				break;
-			}
-		}
-		spin_unlock(&translock);
-
-		if (!newztc)
-			return match ? -EBUSY : -ENOSYS;
-
-		/* Move transcoder header over */
-		origztc = (*ztc);
-		(*ztc) = newztc;
-		(*ztc)->tch = origztc->tch;
-		origztc->tch = NULL;
-		(*ztc)->flags |= (origztc->flags & ~(ZT_TC_FLAG_TRANSIENT));
-		ztc_release(origztc);
-	}
-
-	/* Actually reset the transcoder channel */
-	if ((*ztc)->parent && ((*ztc)->parent->operation))
-		return (*ztc)->parent->operation((*ztc), ZT_TCOP_ALLOCATE);
-
-	return -EINVAL;
-}
-
-static int wait_busy(struct zt_transcoder_channel *ztc)
-{
-	int ret;
-
-	for (;;) {
-		if (!(ztc->tch->status & ZT_TC_FLAG_BUSY))
-			return 0;
-		if ((ret = schluffen(&ztc->ready)))
-			return ret;
-	}
-}
-
-static int zt_tc_getinfo(unsigned long data)
-{
-	struct zt_transcode_info info;
-	unsigned int x;
-	struct zt_transcoder *tc;
-	
-	if (copy_from_user(&info, (struct zt_transcode_info *) data, sizeof(info)))
-		return -EFAULT;
-
-	spin_lock(&translock);
-	for (tc = trans, x = info.tcnum; tc && x; tc = tc->next, x--);
-	spin_unlock(&translock);
-
-	if (!tc)
-		return -ENOSYS;
-
-	zap_copy_string(info.name, tc->name, sizeof(info.name));
-	info.numchannels = tc->numchannels;
-	info.srcfmts = tc->srcfmts;
-	info.dstfmts = tc->dstfmts;
-
-	return copy_to_user((struct zt_transcode_info *) data, &info, sizeof(info)) ? -EFAULT : 0;
-}
-
-static int zt_tc_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long data)
-{
-	int op;
-	int ret;
-	struct zt_transcoder_channel *ztc = file->private_data;
-
-	if (cmd != ZT_TRANSCODE_OP)
-		return -ENOSYS;
-
-	if (get_user(op, (int *) data))
-		return -EFAULT;
-
-	if (debug)
-		printk("ZT Transcode ioctl op = %d!\n", op);
-
-	switch(op) {
-	case ZT_TCOP_GETINFO:
-		ret = zt_tc_getinfo(data);
-		break;
-	case ZT_TCOP_ALLOCATE:
-		/* Reset transcoder, possibly changing who we point to */
-		ret = do_reset(&ztc);
-		file->private_data = ztc;
-		break;
-	case ZT_TCOP_RELEASE:
-		ret = ztc->parent->operation(ztc, ZT_TCOP_RELEASE);
-		break;
-	case ZT_TCOP_TEST:
-		ret = ztc->parent->operation(ztc, ZT_TCOP_TEST);
-		break;
-	case ZT_TCOP_TRANSCODE:
-		if (!ztc->parent->operation)
-			return -EINVAL;
-
-		ztc->tch->status |= ZT_TC_FLAG_BUSY;
-		if (!(ret = ztc->parent->operation(ztc, ZT_TCOP_TRANSCODE))) {
-			/* Wait for busy to go away if we're not non-blocking */
-			if (!(file->f_flags & O_NONBLOCK)) {
-				if (!(ret = wait_busy(ztc)))
-					ret = ztc->errorstatus;
-			}
-		} else
-			ztc->tch->status &= ~ZT_TC_FLAG_BUSY;
-		break;
-	default:
-		ret = -ENOSYS;
-	}
-
-	return ret;
-}
-
-static int zt_tc_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	struct zt_transcoder_channel *ztc = file->private_data;
-	unsigned long physical;
-	int res;
-
-	if (!ztc)
-		return -EINVAL;
-
-	/* Do not allow an offset */
-	if (vma->vm_pgoff) {
-		if (debug)
-			printk("zttranscode: Attempted to mmap with offset!\n");
-		return -EINVAL;
-	}
-
-	if ((vma->vm_end - vma->vm_start) != sizeof(struct zt_transcode_header)) {
-		if (debug)
-			printk("zttranscode: Attempted to mmap with size %d != %zd!\n", (int) (vma->vm_end - vma->vm_start), sizeof(struct zt_transcode_header));
-		return -EINVAL;
-	}
-
-	physical = (unsigned long) virt_to_phys(ztc->tch);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10)
-	res = remap_pfn_range(vma, vma->vm_start, physical >> PAGE_SHIFT, sizeof(struct zt_transcode_header), PAGE_SHARED);
-#else
-  #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-	res = remap_page_range(vma->vm_start, physical, sizeof(struct zt_transcode_header), PAGE_SHARED);
-  #else
-	res = remap_page_range(vma, vma->vm_start, physical, sizeof(struct zt_transcode_header), PAGE_SHARED);
-  #endif
-#endif
-	if (res) {
-		if (debug)
-			printk("zttranscode: remap failed!\n");
-		return -EAGAIN;
-	}
-
-	if (debug)
-		printk("zttranscode: successfully mapped transcoder!\n");
-
-	return 0;
-}
-
-static unsigned int zt_tc_poll(struct file *file, struct poll_table_struct *wait_table)
-{
-	struct zt_transcoder_channel *ztc = file->private_data;
-
-	if (!ztc)
-		return -EINVAL;
-
-	poll_wait(file, &ztc->ready, wait_table);
-	return ztc->tch->status & ZT_TC_FLAG_BUSY ? 0 : POLLPRI;
-}
-
-static struct file_operations __zt_transcode_fops = {
-	owner: THIS_MODULE,
-	llseek: NULL,
-	open: zt_tc_open,
-	release: zt_tc_release,
-	ioctl: zt_tc_ioctl,
-	read: NULL,
-	write: NULL,
-	poll: zt_tc_poll,
-	mmap: zt_tc_mmap,
-	flush: NULL,
-	fsync: NULL,
-	fasync: NULL,
-};
-
-static struct zt_chardev transcode_chardev = {
-	.name = "transcode",
-	.minor = 250,
-};
-
-int zttranscode_init(void)
-{
-	int res;
-
-	if (zt_transcode_fops) {
-		printk("Whoa, zt_transcode_fops already set?!\n");
-		return -EBUSY;
-	}
-
-	zt_transcode_fops = &__zt_transcode_fops;
-
-	if ((res = zt_register_chardev(&transcode_chardev)))
-		return res;
-
-	printk("Zaptel Transcoder support loaded\n");
-
-	return 0;
-}
-
-void zttranscode_cleanup(void)
-{
-	zt_unregister_chardev(&transcode_chardev);
-
-	zt_transcode_fops = NULL;
-
-	printk("Zaptel Transcoder support unloaded\n");
-}
-
-#ifdef LINUX26
-module_param(debug, int, S_IRUGO | S_IWUSR);
-#else
-MODULE_PARM(debug, "i");
-#endif
-MODULE_DESCRIPTION("Zaptel Transcoder Support");
-MODULE_AUTHOR("Mark Spencer <markster@digium.com>");
-#ifdef MODULE_LICENSE
-MODULE_LICENSE("GPL");
-#endif
-
-module_init(zttranscode_init);
-module_exit(zttranscode_cleanup);