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OpenCloudOS-Kernel
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Merge branch 'bugzilla-13036' into release

This commit is contained in:
Len Brown 2009-04-24 10:42:21 -04:00
parent 1fe94d37f9 a38d75fa2e
commit 5f855a8f0c
1 changed files with 72 additions and 14 deletions
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86
drivers/acpi/acpica/hwvalid.c
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@ -90,6 +90,7 @@ static const struct acpi_port_info acpi_protected_ports[] = {
{"PIT2", 0x0048, 0x004B, ACPI_OSI_WIN_XP},
{"RTC", 0x0070, 0x0071, ACPI_OSI_WIN_XP},
{"CMOS", 0x0074, 0x0076, ACPI_OSI_WIN_XP},
{"DMA1", 0x0081, 0x0083, ACPI_OSI_WIN_XP},
{"DMA1L", 0x0087, 0x0087, ACPI_OSI_WIN_XP},
{"DMA2", 0x0089, 0x008B, ACPI_OSI_WIN_XP},
{"DMA2L", 0x008F, 0x008F, ACPI_OSI_WIN_XP},
@ -151,7 +152,7 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
ACPI_ERROR((AE_INFO,
"Illegal I/O port address/length above 64K: 0x%p/%X",
ACPI_CAST_PTR(void, address), byte_width));
return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
return_ACPI_STATUS(AE_LIMIT);
}
/* Exit if requested address is not within the protected port table */
@ -178,11 +179,12 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
/* Port illegality may depend on the _OSI calls made by the BIOS */
if (acpi_gbl_osi_data >= port_info->osi_dependency) {
ACPI_ERROR((AE_INFO,
"Denied AML access to port 0x%p/%X (%s 0x%.4X-0x%.4X)",
ACPI_CAST_PTR(void, address),
byte_width, port_info->name,
port_info->start, port_info->end));
ACPI_DEBUG_PRINT((ACPI_DB_IO,
"Denied AML access to port 0x%p/%X (%s 0x%.4X-0x%.4X)",
ACPI_CAST_PTR(void, address),
byte_width, port_info->name,
port_info->start,
port_info->end));
return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
}
@ -206,7 +208,7 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
* Value Where value is placed
* Width Number of bits
*
* RETURN: Value read from port
* RETURN: Status and value read from port
*
* DESCRIPTION: Read data from an I/O port or register. This is a front-end
* to acpi_os_read_port that performs validation on both the port
@ -217,14 +219,43 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
{
acpi_status status;
u32 one_byte;
u32 i;
/* Validate the entire request and perform the I/O */
status = acpi_hw_validate_io_request(address, width);
if (ACPI_FAILURE(status)) {
if (ACPI_SUCCESS(status)) {
status = acpi_os_read_port(address, value, width);
return status;
}
status = acpi_os_read_port(address, value, width);
return status;
if (status != AE_AML_ILLEGAL_ADDRESS) {
return status;
}
/*
* There has been a protection violation within the request. Fall
* back to byte granularity port I/O and ignore the failing bytes.
* This provides Windows compatibility.
*/
for (i = 0, *value = 0; i < width; i += 8) {
/* Validate and read one byte */
if (acpi_hw_validate_io_request(address, 8) == AE_OK) {
status = acpi_os_read_port(address, &one_byte, 8);
if (ACPI_FAILURE(status)) {
return status;
}
*value |= (one_byte << i);
}
address++;
}
return AE_OK;
}
/******************************************************************************
@ -235,7 +266,7 @@ acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
* Value Value to write
* Width Number of bits
*
* RETURN: None
* RETURN: Status
*
* DESCRIPTION: Write data to an I/O port or register. This is a front-end
* to acpi_os_write_port that performs validation on both the port
@ -246,12 +277,39 @@ acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width)
{
acpi_status status;
u32 i;
/* Validate the entire request and perform the I/O */
status = acpi_hw_validate_io_request(address, width);
if (ACPI_FAILURE(status)) {
if (ACPI_SUCCESS(status)) {
status = acpi_os_write_port(address, value, width);
return status;
}
status = acpi_os_write_port(address, value, width);
return status;
if (status != AE_AML_ILLEGAL_ADDRESS) {
return status;
}
/*
* There has been a protection violation within the request. Fall
* back to byte granularity port I/O and ignore the failing bytes.
* This provides Windows compatibility.
*/
for (i = 0; i < width; i += 8) {
/* Validate and write one byte */
if (acpi_hw_validate_io_request(address, 8) == AE_OK) {
status =
acpi_os_write_port(address, (value >> i) & 0xFF, 8);
if (ACPI_FAILURE(status)) {
return status;
}
}
address++;
}
return AE_OK;
}