[people/arne_f/kernel.git] / arch / arm / mach-iop13xx / io.c

/*
 * iop13xx custom ioremap implementation
 * Copyright (c) 2005-2006, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307 USA.
 *
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/io.h>
#include <mach/hardware.h>

#include "pci.h"

static void __iomem *__iop13xx_ioremap_caller(phys_addr_t cookie,
	size_t size, unsigned int mtype, void *caller)
{
	void __iomem * retval;

	switch (cookie) {
	case IOP13XX_PCIX_LOWER_MEM_RA ... IOP13XX_PCIX_UPPER_MEM_RA:
		if (unlikely(!iop13xx_atux_mem_base))
			retval = NULL;
		else
			retval = (iop13xx_atux_mem_base +
			         (cookie - IOP13XX_PCIX_LOWER_MEM_RA));
		break;
	case IOP13XX_PCIE_LOWER_MEM_RA ... IOP13XX_PCIE_UPPER_MEM_RA:
		if (unlikely(!iop13xx_atue_mem_base))
			retval = NULL;
		else
			retval = (iop13xx_atue_mem_base +
			         (cookie - IOP13XX_PCIE_LOWER_MEM_RA));
		break;
	case IOP13XX_PBI_LOWER_MEM_RA ... IOP13XX_PBI_UPPER_MEM_RA:
		retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
				       (cookie - IOP13XX_PBI_LOWER_MEM_RA),
				       size, mtype, __builtin_return_address(0));
		break;
	case IOP13XX_PMMR_PHYS_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_PA:
		retval = IOP13XX_PMMR_PHYS_TO_VIRT(cookie);
		break;
	default:
		retval = __arm_ioremap_caller(cookie, size, mtype,
				caller);
	}

	return retval;
}

static void __iop13xx_iounmap(volatile void __iomem *addr)
{
	if (iop13xx_atue_mem_base)
		if (addr >= (void __iomem *) iop13xx_atue_mem_base &&
	 	    addr < (void __iomem *) (iop13xx_atue_mem_base +
	 	    			     iop13xx_atue_mem_size))
		    goto skip;

	if (iop13xx_atux_mem_base)
		if (addr >= (void __iomem *) iop13xx_atux_mem_base &&
	 	    addr < (void __iomem *) (iop13xx_atux_mem_base +
	 	    			     iop13xx_atux_mem_size))
		    goto skip;

	switch ((u32) addr) {
	case (u32)IOP13XX_PMMR_VIRT_MEM_BASE ... (u32)IOP13XX_PMMR_UPPER_MEM_VA:
		goto skip;
	}
	__iounmap(addr);

skip:
	return;
}

void __init iop13xx_init_early(void)
{
	arch_ioremap_caller = __iop13xx_ioremap_caller;
	arch_iounmap = __iop13xx_iounmap;
}
Commit	Line	Data
285f5fa7 DW	1	/*
	2	* iop13xx custom ioremap implementation
	3	* Copyright (c) 2005-2006, Intel Corporation.
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms and conditions of the GNU General Public License,
	7	* version 2, as published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along with
	15	* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
	16	* Place - Suite 330, Boston, MA 02111-1307 USA.
	17	*
	18	*/
	19	#include <linux/kernel.h>
	20	#include <linux/module.h>
fced80c7	21	#include <linux/io.h>
a09e64fb	22	#include <mach/hardware.h>
285f5fa7	23
17d971e5 RH	24	#include "pci.h"
17d971e5 RH	25
9b97173e	26	static void __iomem *__iop13xx_ioremap_caller(phys_addr_t cookie,
1dfe34ae	27	size_t size, unsigned int mtype, void *caller)
285f5fa7 DW	28	{
	29	void __iomem * retval;
	30
	31	switch (cookie) {
	32	case IOP13XX_PCIX_LOWER_MEM_RA ... IOP13XX_PCIX_UPPER_MEM_RA:
	33	if (unlikely(!iop13xx_atux_mem_base))
	34	retval = NULL;
	35	else
abf2ba15	36	retval = (iop13xx_atux_mem_base +
285f5fa7 DW	37	(cookie - IOP13XX_PCIX_LOWER_MEM_RA));
	38	break;
	39	case IOP13XX_PCIE_LOWER_MEM_RA ... IOP13XX_PCIE_UPPER_MEM_RA:
	40	if (unlikely(!iop13xx_atue_mem_base))
	41	retval = NULL;
	42	else
abf2ba15	43	retval = (iop13xx_atue_mem_base +
285f5fa7 DW	44	(cookie - IOP13XX_PCIE_LOWER_MEM_RA));
	45	break;
	46	case IOP13XX_PBI_LOWER_MEM_RA ... IOP13XX_PBI_UPPER_MEM_RA:
31aa8fd6	47	retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
3603ab2b	48	(cookie - IOP13XX_PBI_LOWER_MEM_RA),
31aa8fd6	49	size, mtype, __builtin_return_address(0));
285f5fa7	50	break;
285f5fa7	51	case IOP13XX_PMMR_PHYS_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_PA:
abf2ba15	52	retval = IOP13XX_PMMR_PHYS_TO_VIRT(cookie);
285f5fa7 DW	53	break;
285f5fa7 DW	54	default:
31aa8fd6	55	retval = __arm_ioremap_caller(cookie, size, mtype,
1dfe34ae	56	caller);
285f5fa7 DW	57	}
	58
	59	return retval;
	60	}
285f5fa7	61
1dfe34ae	62	static void __iop13xx_iounmap(volatile void __iomem *addr)
285f5fa7	63	{
285f5fa7 DW	64	if (iop13xx_atue_mem_base)
	65	if (addr >= (void __iomem *) iop13xx_atue_mem_base &&
	66	addr < (void __iomem *) (iop13xx_atue_mem_base +
	67	iop13xx_atue_mem_size))
	68	goto skip;
	69
	70	if (iop13xx_atux_mem_base)
	71	if (addr >= (void __iomem *) iop13xx_atux_mem_base &&
	72	addr < (void __iomem *) (iop13xx_atux_mem_base +
	73	iop13xx_atux_mem_size))
	74	goto skip;
	75
	76	switch ((u32) addr) {
abf2ba15	77	case (u32)IOP13XX_PMMR_VIRT_MEM_BASE ... (u32)IOP13XX_PMMR_UPPER_MEM_VA:
285f5fa7 DW	78	goto skip;
	79	}
	80	__iounmap(addr);
	81
	82	skip:
	83	return;
	84	}
1dfe34ae RH	85
	86	void __init iop13xx_init_early(void)
	87	{
	88	arch_ioremap_caller = __iop13xx_ioremap_caller;
	89	arch_iounmap = __iop13xx_iounmap;
	90	}