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/*
* DAHDI Telephony Interface to VPMADT032 Firmware Loader
*
* Copyright (C) 2008-2010 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 version 2 as
* published by the Free Software Foundation.
*
* 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/ctype.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>
#include <dahdi/kernel.h>
static int debug;
#include "voicebus/voicebus.h"
#include "voicebus/vpmadtreg.h"
#include "vpmadt032_loader.h"
vpmlinkage static int __attribute__((format (printf, 1, 2)))
logger(const char *format, ...)
{
int res;
va_list args;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 9)
va_start(args, format);
res = vprintk(format, args);
va_end(args);
#else
char buf[256];
va_start(args, format);
res = vsnprintf(buf, sizeof(buf), format, args);
va_end(args);
printk(KERN_INFO "%s" buf);
#endif
return res;
}
vpmlinkage static void *memalloc(size_t len)
{
return kmalloc(len, GFP_KERNEL);
}
vpmlinkage static void memfree(void *ptr)
{
kfree(ptr);
}
struct private_context {
struct voicebus *vb;
void *pvt;
struct completion done;
};
static void init_private_context(struct private_context *ctx)
{
init_completion(&ctx->done);
}
static void handle_receive(struct voicebus *vb, struct list_head *buffers)
{
struct private_context *ctx = pci_get_drvdata(vb->pdev);
struct vbb *vbb;
list_for_each_entry(vbb, buffers, entry) {
__vpmadt032_receive(ctx->pvt, vbb->data);
if (__vpmadt032_done(ctx->pvt))
complete(&ctx->done);
}
}
static void handle_transmit(struct voicebus *vb, struct list_head *buffers)
{
struct vbb *vbb;
struct private_context *ctx = pci_get_drvdata(vb->pdev);
list_for_each_entry(vbb, buffers, entry)
__vpmadt032_transmit(ctx->pvt, vbb->data);
}
static const struct voicebus_operations loader_operations = {
.handle_receive = handle_receive,
.handle_transmit = handle_transmit,
};
static int vpmadt032_load_firmware(struct voicebus *vb)
{
int ret = 0;
struct private_context *ctx;
const struct voicebus_operations *old;
void *old_drvdata;
int id;
might_sleep();
ctx = kzalloc(sizeof(struct private_context), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
init_private_context(ctx);
ctx->vb = vb;
if (0x8007 == vb->pdev->device || 0x8008 == vb->pdev->device)
id = vb->pdev->vendor << 16 | 0x2400;
else
id = vb->pdev->vendor << 16 | vb->pdev->device;
ret = __vpmadt032_start_load(0, id, &ctx->pvt);
if (ret)
goto error_exit;
old_drvdata = pci_get_drvdata(vb->pdev);
pci_set_drvdata(vb->pdev, ctx);
old = vb->ops;
vb->ops = &loader_operations;
if (!wait_for_completion_timeout(&ctx->done, HZ*20))
ret = -EIO;
vb->ops = old;
pci_set_drvdata(vb->pdev, old_drvdata);
__vpmadt032_cleanup(ctx->pvt);
error_exit:
kfree(ctx);
return ret;
}
static struct vpmadt_loader loader = {
.owner = THIS_MODULE,
.load = vpmadt032_load_firmware,
};
static int __init vpmadt032_loader_init(void)
{
__vpmadt032_init(logger, debug, memalloc, memfree);
vpmadtreg_register(&loader);
return 0;
}
static void __exit vpmadt032_loader_exit(void)
{
vpmadtreg_unregister(&loader);
return;
}
module_param(debug, int, S_IRUGO | S_IWUSR);
MODULE_DESCRIPTION("DAHDI VPMADT032 (Hardware Echo Canceller) Firmware Loader");
MODULE_AUTHOR("Digium Incorporated <support@digium.com>");
MODULE_LICENSE("Digium Commercial");
module_init(vpmadt032_loader_init);
module_exit(vpmadt032_loader_exit);
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