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>
21#include <linux/io.h>
22#include <mach/hardware.h>
23
24#include "pci.h"
25
26static void __iomem *__iop13xx_ioremap_caller(phys_addr_t cookie,
27	size_t size, unsigned int mtype, void *caller)
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
36			retval = (iop13xx_atux_mem_base +
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
43			retval = (iop13xx_atue_mem_base +
44			         (cookie - IOP13XX_PCIE_LOWER_MEM_RA));
45		break;
46	case IOP13XX_PBI_LOWER_MEM_RA ... IOP13XX_PBI_UPPER_MEM_RA:
47		retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
48				       (cookie - IOP13XX_PBI_LOWER_MEM_RA),
49				       size, mtype, __builtin_return_address(0));
50		break;
51	case IOP13XX_PMMR_PHYS_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_PA:
52		retval = IOP13XX_PMMR_PHYS_TO_VIRT(cookie);
53		break;
54	default:
55		retval = __arm_ioremap_caller(cookie, size, mtype,
56				caller);
57	}
58
59	return retval;
60}
61
62static void __iop13xx_iounmap(volatile void __iomem *addr)
63{
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) {
77	case (u32)IOP13XX_PMMR_VIRT_MEM_BASE ... (u32)IOP13XX_PMMR_UPPER_MEM_VA:
78		goto skip;
79	}
80	__iounmap(addr);
81
82skip:
83	return;
84}
85
86void __init iop13xx_init_early(void)
87{
88	arch_ioremap_caller = __iop13xx_ioremap_caller;
89	arch_iounmap = __iop13xx_iounmap;
90}
91