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Code Issues Releases Activity

Add the byte offset to the base address for IndexField objects. This

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fixes an interrupt storm for certain users.  This is done on the vendor
branch since the code is already in the 20031029 ACPI-CA dist and will
be imported after 5.2R.

Tested by:	sebastian ssmoller <sebastian.ssmoller@gmx.net>
PR:		i386/57909
Approved by:	re (jhb)
This commit is contained in:
Nate Lawson 2003-11-21 21:21:17 +00:00
parent 0e4c356acf
commit 847c562d46
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/vendor-sys/acpica/dist/; revision=122944
1 changed files with 19 additions and 9 deletions
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28
sys/contrib/dev/acpica/exfldio.c
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@ -422,10 +422,10 @@ AcpiExFieldDatumIo (
/*
* The four types of fields are:
*
* BufferFields - Read/write from/to a Buffer
* RegionFields - Read/write from/to a Operation Region.
* BankFields - Write to a Bank Register, then read/write from/to an OpRegion
* IndexFields - Write to an Index Register, then read/write from/to a Data Register
* BufferField - Read/write from/to a Buffer
* RegionField - Read/write from/to a Operation Region.
* BankField - Write to a Bank Register, then read/write from/to an OpRegion
* IndexField - Write to an Index Register, then read/write from/to a Data Register
*/
switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
{
@ -523,27 +523,37 @@ AcpiExFieldDatumIo (
/* Write the index value to the IndexRegister (itself a RegionField) */
FieldDatumByteOffset += ObjDesc->IndexField.Value;
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"Write to Index Register: Value %8.8X\n",
FieldDatumByteOffset));
Status = AcpiExInsertIntoField (ObjDesc->IndexField.IndexObj,
&ObjDesc->IndexField.Value,
sizeof (ObjDesc->IndexField.Value));
&FieldDatumByteOffset,
sizeof (FieldDatumByteOffset));
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
"I/O to Data Register: ValuePtr %p\n",
Value));
if (ReadWrite == ACPI_READ)
{
/* Read the datum from the DataRegister */
Status = AcpiExExtractFromField (ObjDesc->IndexField.DataObj,
Value, ObjDesc->CommonField.AccessByteWidth);
Value, sizeof (ACPI_INTEGER));
}
else
{
/* Write the datum to the Data register */
/* Write the datum to the DataRegister */
Status = AcpiExInsertIntoField (ObjDesc->IndexField.DataObj,
Value, ObjDesc->CommonField.AccessByteWidth);
Value, sizeof (ACPI_INTEGER));
}
break;