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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 <asm/hardware.h>
#include <asm/io.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);

void * __iomem __iop13xx_ioremap(unsigned long cookie, size_t size,
      unsigned int mtype)
{
      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(IOP13XX_PBI_LOWER_MEM_PA +
                               (cookie - IOP13XX_PBI_LOWER_MEM_RA),
                               size, mtype);
            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(cookie, size, mtype);
      }

      return retval;
}
EXPORT_SYMBOL(__iop13xx_ioremap);

void __iop13xx_iounmap(void __iomem *addr)
{
      extern void __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;
}
EXPORT_SYMBOL(__iop13xx_iounmap);

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