This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / arm / mach-iop13xx / io.c

diff --git a/arch/arm/mach-iop13xx/io.c b/arch/arm/mach-iop13xx/io.c
new file mode 100644 (file)
index 0000000..e79a1b6
--- /dev/null
+++ b/arch/arm/mach-iop13xx/io.c
@@ -0,0 +1,112 @@
+/*
+ * 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 long flags)
+{
+       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 = __ioremap(IOP13XX_PBI_LOWER_MEM_PA +
+                                 (cookie - IOP13XX_PBI_LOWER_MEM_RA),
+                                 size, flags);
+               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 = __ioremap(cookie, size, flags);
+       }
+
+       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);