Enhance ACPI resource parsing interfaces to support sparse IO space,
which will be used to share common code between x86 and IA64 later.

Tested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Jiang Liu <redacted>
---
  drivers/acpi/resource.c |    9 ++++++---
  include/linux/ioport.h  |    1 +
  2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 8244f013f210..fdcc73dad2c1 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c

@@ -123,7 +123,7 @@ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
  EXPORT_SYMBOL_GPL(acpi_dev_resource_memory);

  static void acpi_dev_ioresource_flags(struct resource *res, u64 len,
-				      u8 io_decode)
+				      u8 io_decode, u8 translation_type)
  {
  	res->flags = IORESOURCE_IO;

@@ -135,6 +135,8 @@ static void acpi_dev_ioresource_flags(struct resource *res, u64 len,

  	if (io_decode == ACPI_DECODE_16)
  		res->flags |= IORESOURCE_IO_16BIT_ADDR;
+	if (translation_type == ACPI_SPARSE_TRANSLATION)
+		res->flags |= IORESOURCE_IO_SPARSE;
  }

  static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,

@@ -142,7 +144,7 @@ static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,
  {
  	res->start = start;
  	res->end = start + len - 1;
-	acpi_dev_ioresource_flags(res, len, io_decode);
+	acpi_dev_ioresource_flags(res, len, io_decode, 0);
  }

  /**

@@ -227,7 +229,8 @@ static bool acpi_decode_space(struct resource_win *win,
  		acpi_dev_memresource_flags(res, len, wp);
  		break;
  	case ACPI_IO_RANGE:
-		acpi_dev_ioresource_flags(res, len, iodec);
+		acpi_dev_ioresource_flags(res, len, iodec,
+					  addr->info.io.translation_type);
  		break;
  	case ACPI_BUS_NUMBER_RANGE:
  		res->flags = IORESOURCE_BUS;

diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 388e3ae94f7a..24bea087e7af 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h

@@ -94,6 +94,7 @@ struct resource {
  /* PnP I/O specific bits (IORESOURCE_BITS) */
  #define IORESOURCE_IO_16BIT_ADDR	(1<<0)
  #define IORESOURCE_IO_FIXED		(1<<1)
+#define IORESOURCE_IO_SPARSE		(1<<2)

  /* PCI ROM control bits (IORESOURCE_BITS) */
  #define IORESOURCE_ROM_ENABLE		(1<<0)	/* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */