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
 26void * __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}
 43EXPORT_SYMBOL(__iop13xx_io);
 44
 45static void __iomem *__iop13xx_ioremap_caller(unsigned long cookie,
 46	size_t size, unsigned int mtype, void *caller)
 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:
 66		retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
 67				       (cookie - IOP13XX_PBI_LOWER_MEM_RA),
 68				       size, mtype, __builtin_return_address(0));
 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:
 80		retval = __arm_ioremap_caller(cookie, size, mtype,
 81				caller);
 82	}
 83
 84	return retval;
 85}
 86
 87static void __iop13xx_iounmap(volatile void __iomem *addr)
 88{
 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
109skip:
110	return;
111}
112
113void __init iop13xx_init_early(void)
114{
115	arch_ioremap_caller = __iop13xx_ioremap_caller;
116	arch_iounmap = __iop13xx_iounmap;
117}