/*
Broadcom B43legacy wireless driver
DMA ringbuffer and descriptor allocation/management
Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch>
Some code in this file is derived from the b44.c driver
Copyright (C) 2002 David S. Miller
Copyright (C) Pekka Pietikainen
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; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "b43legacy.h"
#include "dma.h"
#include "main.h"
#include "debugfs.h"
#include "xmit.h"
#include <linux/dma-mapping.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <net/dst.h>
/* 32bit DMA ops. */
static
struct b43legacy_dmadesc32 *op32_idx2desc(struct b43legacy_dmaring *ring,
int slot,
struct b43legacy_dmadesc_meta **meta)
{
struct b43legacy_dmadesc32 *desc;
*meta = &(ring->meta[slot]);
desc = ring->descbase;
desc = &(desc[slot]);
return desc;
}
static void op32_fill_descriptor(struct b43legacy_dmaring *ring,
struct b43legacy_dmadesc32 *desc,
dma_addr_t dmaaddr, u16 bufsize,
int start, int end, int irq)
{
struct b43legacy_dmadesc32 *descbase = ring->descbase;
int 