linux-imx

/*

**  System Bus Adapter (SBA) I/O MMU manager

**

**  (c) Copyright 2000-2004 Grant Grundler <grundler @ parisc-linux x org>

**  (c) Copyright 2004 Naresh Kumar Inna <knaresh at india x hp x com>

**  (c) Copyright 2000-2004 Hewlett-Packard Company

**

**  Portions (c) 1999 Dave S. Miller (from sparc64 I/O MMU code)

**

**  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 module initializes the IOC (I/O Controller) found on B1000/C3000/

** J5000/J7000/N-class/L-class machines and their successors.

**

** FIXME: add DMA hint support programming in both sba and lba modules.

*/

​

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/spinlock.h>

#include <linux/slab.h>

#include <linux/init.h>

​

#include <linux/mm.h>

#include <linux/string.h>

#include <linux/pci.h>

#include <linux/scatterlist.h>

#include <linux/iommu-helper.h>

​

#include <asm/byteorder.h>

#include <asm/io.h>

#include <asm/dma.h>        /* for DMA_CHUNK_SIZE */

​

#include <asm/hardware.h>   /* for register_parisc_driver() stuff */

​

#include <linux/proc_fs.h>

#include <linux/seq_file.h>

#include <linux/module.h>

​

#include <asm/ropes.h>

#include <asm/mckinley.h>   /* for proc_mckinley_root */

#include <asm/runway.h>     /* for proc_runway_root */

#include <asm/page.h>       /* for PAGE0 */

#include <asm/pdc.h>        /* for PDC_MODEL_* */

#include <asm/pdcpat.h>     /* for is_pdc_pat() */

#include <asm/parisc-device.h>

​

#include "iommu.h"

​

#define MODULE_NAME "SBA"

​

/*

** The number of debug flags is a clue - this code is fragile.

** Don't even think about messing with it unless you have

** plenty of 710's to sacrifice to the computer gods. :^)

*/

#undef DEBUG_SBA_INIT

#undef DEBUG_SBA_RUN

#undef DEBUG_SBA_RUN_SG

#undef DEBUG_SBA_RESOURCE

#undef ASSERT_PDIR_SANITY

#undef DEBUG_LARGE_SG_ENTRIES

#undef DEBUG_DMB_TRAP

​

#ifdef DEBUG_SBA_INIT

#define DBG_INIT(x...)  printk(x)

#else

#define DBG_INIT(x...)

#endif

​

#ifdef DEBUG_SBA_RUN

#define DBG_RUN(x...)   printk(x)

#else

#define DBG_RUN(x...)

#endif

​

#ifdef DEBUG_SBA_RUN_SG

#define DBG_RUN_SG(x...)    printk(x)

#else

#define DBG_RUN_SG(x...)

#endif

​

​

#ifdef DEBUG_SBA_RESOURCE

#define DBG_RES(x...)   printk(x)

#else

#define DBG_RES(x...)

#endif