[deliverable/linux.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"

void * __iomem __iop13xx_io(unsigned long io_addr)
{
	void __iomem * io_virt;

	switch (io_addr) {
	case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA:
		io_virt = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(io_addr);
		break;
	case IOP13XX_PCIX_LOWER_IO_PA ... IOP13XX_PCIX_UPPER_IO_PA:
		io_virt = (void *) IOP13XX_PCIX_IO_PHYS_TO_VIRT(io_addr);
		break;
	default:
		BUG();
	}

	return io_virt;
}
EXPORT_SYMBOL(__iop13xx_io);

static void __iomem *__iop13xx_ioremap_caller(unsigned long 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 = (void *)(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 = (void *)(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_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA:
		retval = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(cookie);
		break;
	case IOP13XX_PCIX_LOWER_IO_PA ... IOP13XX_PCIX_UPPER_IO_PA:
		retval = (void *) IOP13XX_PCIX_IO_PHYS_TO_VIRT(cookie);
		break;
	case IOP13XX_PMMR_PHYS_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_PA:
		retval = (void *) 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 IOP13XX_PCIE_LOWER_IO_VA ... IOP13XX_PCIE_UPPER_IO_VA:
	case IOP13XX_PCIX_LOWER_IO_VA ... IOP13XX_PCIX_UPPER_IO_VA:
	case IOP13XX_PMMR_VIRT_MEM_BASE ... 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
b0b1d60a DW	26	void * __iomem __iop13xx_io(unsigned long io_addr)
	27	{
	28	void __iomem * io_virt;
	29
	30	switch (io_addr) {
	31	case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA:
	32	io_virt = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(io_addr);
	33	break;
	34	case IOP13XX_PCIX_LOWER_IO_PA ... IOP13XX_PCIX_UPPER_IO_PA:
	35	io_virt = (void *) IOP13XX_PCIX_IO_PHYS_TO_VIRT(io_addr);
	36	break;
	37	default:
	38	BUG();
	39	}
	40
	41	return io_virt;
	42	}
	43	EXPORT_SYMBOL(__iop13xx_io);
	44
1dfe34ae RH	45	static void __iomem *__iop13xx_ioremap_caller(unsigned long cookie,
1dfe34ae RH	46	size_t size, unsigned int mtype, void *caller)
285f5fa7 DW	47	{
	48	void __iomem * retval;
	49
	50	switch (cookie) {
	51	case IOP13XX_PCIX_LOWER_MEM_RA ... IOP13XX_PCIX_UPPER_MEM_RA:
	52	if (unlikely(!iop13xx_atux_mem_base))
	53	retval = NULL;
	54	else
	55	retval = (void *)(iop13xx_atux_mem_base +
	56	(cookie - IOP13XX_PCIX_LOWER_MEM_RA));
	57	break;
	58	case IOP13XX_PCIE_LOWER_MEM_RA ... IOP13XX_PCIE_UPPER_MEM_RA:
	59	if (unlikely(!iop13xx_atue_mem_base))
	60	retval = NULL;
	61	else
	62	retval = (void *)(iop13xx_atue_mem_base +
	63	(cookie - IOP13XX_PCIE_LOWER_MEM_RA));
	64	break;
	65	case IOP13XX_PBI_LOWER_MEM_RA ... IOP13XX_PBI_UPPER_MEM_RA:
31aa8fd6	66	retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
3603ab2b	67	(cookie - IOP13XX_PBI_LOWER_MEM_RA),
31aa8fd6	68	size, mtype, __builtin_return_address(0));
285f5fa7 DW	69	break;
	70	case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA:
	71	retval = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(cookie);
	72	break;
	73	case IOP13XX_PCIX_LOWER_IO_PA ... IOP13XX_PCIX_UPPER_IO_PA:
	74	retval = (void *) IOP13XX_PCIX_IO_PHYS_TO_VIRT(cookie);
	75	break;
	76	case IOP13XX_PMMR_PHYS_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_PA:
	77	retval = (void *) IOP13XX_PMMR_PHYS_TO_VIRT(cookie);
	78	break;
	79	default:
31aa8fd6	80	retval = __arm_ioremap_caller(cookie, size, mtype,
1dfe34ae	81	caller);
285f5fa7 DW	82	}
	83
	84	return retval;
	85	}
285f5fa7	86
1dfe34ae	87	static void __iop13xx_iounmap(volatile void __iomem *addr)
285f5fa7	88	{
285f5fa7 DW	89	if (iop13xx_atue_mem_base)
	90	if (addr >= (void __iomem *) iop13xx_atue_mem_base &&
	91	addr < (void __iomem *) (iop13xx_atue_mem_base +
	92	iop13xx_atue_mem_size))
	93	goto skip;
	94
	95	if (iop13xx_atux_mem_base)
	96	if (addr >= (void __iomem *) iop13xx_atux_mem_base &&
	97	addr < (void __iomem *) (iop13xx_atux_mem_base +
	98	iop13xx_atux_mem_size))
	99	goto skip;
	100
	101	switch ((u32) addr) {
	102	case IOP13XX_PCIE_LOWER_IO_VA ... IOP13XX_PCIE_UPPER_IO_VA:
	103	case IOP13XX_PCIX_LOWER_IO_VA ... IOP13XX_PCIX_UPPER_IO_VA:
	104	case IOP13XX_PMMR_VIRT_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_VA:
	105	goto skip;
	106	}
	107	__iounmap(addr);
	108
	109	skip:
	110	return;
	111	}
1dfe34ae RH	112
	113	void __init iop13xx_init_early(void)
	114	{
	115	arch_ioremap_caller = __iop13xx_ioremap_caller;
	116	arch_iounmap = __iop13xx_iounmap;
	117	}