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/*
* Some or all of this work - Copyright (c) 2006 - 2013, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Bug 248:
*
* SUMMARY: Incorrect ReferenceCount on Switch operation
*/
Method(m02d)
{
/*
* NoOp -
* all them are for tracking only - to simplify debugging
*/
Method(m003, 1, Serialized)
{
NoOp
Switch (ToInteger (arg0)) {
Case (0) {
Store("m003", debug)
}
}
NoOp
}
Method(m004, 1)
{
NoOp
if (arg0) {
Store("m004", debug)
}
NoOp
}
Method(m1a8, 2)
{
if (arg1) {
m003(arg0)
} else {
m004(arg0)
}
}
Method(m1a9,, Serialized)
{
Name(sw00, 1)
Name(hg00, 0) // if non-zero - the test hangs
Name(p91e, Package() {0xabcd0000})
if (1) {
Store(Index(p91e, 0, Local1), Local0)
} else {
Store(0xabcd0000, Local0)
Store(0xabcd0001, Local1)
}
if (LNotEqual(DerefOf(Local0), 0xabcd0000)) {
err("", zFFF, 0x000, 0, 0, DerefOf(Local0), 0xabcd0000)
}
Store("============== sit 0 (Local0):", debug)
m1a8(Local0, sw00)
/*
* At this point, after returning from m1a8
* for the non-zero sw00, the object attached
* to Local0 has been deleted. It is the essence
* of the bug.
*/
if (hg00) {
/*
* To show visually the consequences of the anomaly
* run this code. It causes hang.
*/
Store("============== sit 1 (Local1):", debug)
m1a8(Local1, sw00)
Store("============== sit 2:", debug)
Store(ObjectType(Local0), Local7)
Store(Local7, debug)
Store(ObjectType(Local1), Local7)
Store(Local7, debug)
Store(Local0, debug)
Store(Local1, debug)
}
Store("============== before checking:", debug)
if (LNotEqual(DerefOf(Local0), 0xabcd0000)) {
err("", zFFF, 0x001, 0, 0, DerefOf(Local0), 0xabcd0000)
}
Store("============== end of test", debug)
}
Method(mm00) {
m1a9()
}
CH03("", 0, 0x002, 0, 0)
mm00()
/* Check opcode of the last exception */
CH04("", 2, 47, 0, 0x003, 0, 0) // AE_AML_OPERAND_TYPE
}
/*
* It is Functional:Reference:ref07.asl:Method(m1d5)
*/
Method(m03d,, Serialized)
{
Name(i001, 0)
Name(p000, Package(2) {0x77, 0x88})
Name(sw00, 1)
Name(hg00, 1) // if non-zero - the test hangs
Name(hg01, 1) // if non-zero - the test hangs
Name(hg02, 1) // if non-zero - the test hangs
CH03("", 0, 184, 0, 0)
CopyObject(Index(p000, 1, Local0), i001)
CH03("", 0, 185, 0, 0)
// Type of i001 should be already IRef here,
// so, don't expect exception.
Store(Index(p000, 0, Local0), i001)
CH03("", 0, 186, 0, 0)
Add(Local0, 1, Local7)
if (y248) {
Store(1, hg00)
Store(1, hg01)
Store(1, hg02)
}
/*
* To show visually the consequences of the anomaly
* run one of code below. They cause hang.
*/
if (hg00) {
// Infinite loop of printing
Store(0, Local1)
Store(Local0, debug)
}
if (hg01) {
// Infinite loop of printing
Store(Local0, debug)
Store(Local0, debug)
}
if (hg02) {
Store(0, Local1)
Store("============== sit 2:", debug)
Store(ObjectType(Local0), Local7)
Store(Local7, debug)
}
CH04("", 0, 0xff, 0, 187, 0, 0)
Add(i001, 1, Local7)
CH04("", 0, 0xff, 0, 188, 0, 0)
/*
* Looks identical to b248: "Incorrect ReferenceCount on Switch operation"
* (though there is no Switch operation)
*
* Reference count of Local0 is mistakenly zeroed there too.
*
* [ACPI Debug] String: [0x0F] "<-------- 0000>"
* [ACPI Debug] Reference: [Debug]
* [ACPI Debug] String: [0x0F] "<-------- 1111>"
*
* [ACPI Debug] String: [0x0F] "<-------- 0000>"
* [ACPI Debug] [ACPI Debug] String: [0x0F] "<-------- 1111>"
*/
Store("<-------- 0000>", debug)
Store(Local0, debug)
Store("<-------- 1111>", debug)
}
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