ACPI_STATUS
AcpiTbBuildCommonFacs (
ACPI_TABLE_DESC *TableInfo)
{
ACPI_FUNCTION_TRACE (TbBuildCommonFacs);
/* Absolute minimum length is 24, but the ACPI spec says 64 */
if (AcpiGbl_FACS->Length < 24)
{
ACPI_ERROR ((AE_INFO, "Invalid FACS table length: 0x%X",
AcpiGbl_FACS->Length));
return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
}
if (AcpiGbl_FACS->Length < 64)
{
ACPI_WARNING ((AE_INFO,
"FACS is shorter than the ACPI specification allows: 0x%X, using anyway",
AcpiGbl_FACS->Length));
}
/* Copy fields to the new FACS */
AcpiGbl_CommonFACS.GlobalLock = &(AcpiGbl_FACS->GlobalLock);
if ((AcpiGbl_RSDP->Revision < 2) ||
(AcpiGbl_FACS->Length < 32) ||
(!(ACPI_GET_ADDRESS (AcpiGbl_FACS->XFirmwareWakingVector))))
{
/* ACPI 1.0 FACS or short table or optional X_ field is zero */
AcpiGbl_CommonFACS.FirmwareWakingVector = ACPI_CAST_PTR (UINT64,
&(AcpiGbl_FACS->FirmwareWakingVector));
AcpiGbl_CommonFACS.VectorWidth = 32;
}
else
{
/* ACPI 2.0 FACS with valid X_ field */
AcpiGbl_CommonFACS.FirmwareWakingVector = &AcpiGbl_FACS->XFirmwareWakingVector;
AcpiGbl_CommonFACS.VectorWidth = 64;
}
return_ACPI_STATUS (AE_OK);
}
static void
AcpiTbConvertFadt2 (
FADT_DESCRIPTOR_REV2 *LocalFadt,
FADT_DESCRIPTOR_REV2 *OriginalFadt)
{
/* We have an ACPI 2.0 FADT but we must copy it to our local buffer */
ACPI_MEMCPY (LocalFadt, OriginalFadt, sizeof (FADT_DESCRIPTOR_REV2));
/*
* "X" fields are optional extensions to the original V1.0 fields, so
* we must selectively expand V1.0 fields if the corresponding X field
* is zero.
*/
if (!(ACPI_GET_ADDRESS (LocalFadt->XFirmwareCtrl)))
{
ACPI_STORE_ADDRESS (LocalFadt->XFirmwareCtrl, LocalFadt->V1_FirmwareCtrl);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XDsdt)))
{
ACPI_STORE_ADDRESS (LocalFadt->XDsdt, LocalFadt->V1_Dsdt);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1aEvtBlk.Address)))
{
ASL_BUILD_GAS_FROM_V1_ENTRY (LocalFadt->XPm1aEvtBlk,
LocalFadt->Pm1EvtLen, LocalFadt->V1_Pm1aEvtBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address)))
{
ASL_BUILD_GAS_FROM_V1_ENTRY (LocalFadt->XPm1bEvtBlk,
LocalFadt->Pm1EvtLen, LocalFadt->V1_Pm1bEvtBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1aCntBlk.Address)))
{
ASL_BUILD_GAS_FROM_V1_ENTRY (LocalFadt->XPm1aCntBlk,
LocalFadt->Pm1CntLen, LocalFadt->V1_Pm1aCntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1bCntBlk.Address)))
{
ASL_BUILD_GAS_FROM_V1_ENTRY (LocalFadt->XPm1bCntBlk,
LocalFadt->Pm1CntLen, LocalFadt->V1_Pm1bCntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm2CntBlk.Address)))
{
ASL_BUILD_GAS_FROM_V1_ENTRY (LocalFadt->XPm2CntBlk,
LocalFadt->Pm2CntLen, LocalFadt->V1_Pm2CntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPmTmrBlk.Address)))
{
ASL_BUILD_GAS_FROM_V1_ENTRY (LocalFadt->XPmTmrBlk,
LocalFadt->PmTmLen, LocalFadt->V1_PmTmrBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XGpe0Blk.Address)))
{
ASL_BUILD_GAS_FROM_V1_ENTRY (LocalFadt->XGpe0Blk,
0, LocalFadt->V1_Gpe0Blk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XGpe1Blk.Address)))
{
ASL_BUILD_GAS_FROM_V1_ENTRY (LocalFadt->XGpe1Blk,
0, LocalFadt->V1_Gpe1Blk);
}
}
ACPI_STATUS
AcpiTbGetRequiredTables (
void)
{
ACPI_STATUS Status = AE_OK;
UINT32 i;
ACPI_TABLE_DESC TableInfo;
ACPI_POINTER Address;
ACPI_FUNCTION_TRACE ("TbGetRequiredTables");
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%d ACPI tables in RSDT\n",
AcpiGbl_RsdtTableCount));
Address.PointerType = AcpiGbl_TableFlags | ACPI_LOGICAL_ADDRESSING;
/*
* Loop through all table pointers found in RSDT.
* This will NOT include the FACS and DSDT - we must get
* them after the loop.
*
* The only tables we are interested in getting here is the FADT and
* any SSDTs.
*/
for (i = 0; i < AcpiGbl_RsdtTableCount; i++)
{
/* Get the table addresss from the common internal XSDT */
Address.Pointer.Value = ACPI_GET_ADDRESS (AcpiGbl_XSDT->TableOffsetEntry[i]);
/*
* Get the tables needed by this subsystem (FADT and any SSDTs).
* NOTE: All other tables are completely ignored at this time.
*/
Status = AcpiTbGetPrimaryTable (&Address, &TableInfo);
if ((Status != AE_OK) && (Status != AE_TABLE_NOT_SUPPORTED))
{
ACPI_REPORT_WARNING (("%s, while getting table at %8.8X%8.8X\n",
AcpiFormatException (Status),
ACPI_HIDWORD (Address.Pointer.Value),
ACPI_LODWORD (Address.Pointer.Value)));
}
}
/* We must have a FADT to continue */
if (!AcpiGbl_FADT)
{
ACPI_REPORT_ERROR (("No FADT present in RSDT/XSDT\n"));
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
}
/*
* Convert the FADT to a common format. This allows earlier revisions of the
* table to coexist with newer versions, using common access code.
*/
Status = AcpiTbConvertTableFadt ();
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_ERROR (("Could not convert FADT to internal common format\n"));
return_ACPI_STATUS (Status);
}
/*
* Get the FACS (Pointed to by the FADT)
*/
Address.Pointer.Value = ACPI_GET_ADDRESS (AcpiGbl_FADT->XFirmwareCtrl);
Status = AcpiTbGetSecondaryTable (&Address, FACS_SIG, &TableInfo);
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_ERROR (("Could not get/install the FACS, %s\n",
AcpiFormatException (Status)));
return_ACPI_STATUS (Status);
}
/*
* Create the common FACS pointer table
* (Contains pointers to the original table)
*/
Status = AcpiTbBuildCommonFacs (&TableInfo);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* Get/install the DSDT (Pointed to by the FADT)
*/
Address.Pointer.Value = ACPI_GET_ADDRESS (AcpiGbl_FADT->XDsdt);
Status = AcpiTbGetSecondaryTable (&Address, DSDT_SIG, &TableInfo);
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_ERROR (("Could not get/install the DSDT\n"));
return_ACPI_STATUS (Status);
}
/* Set Integer Width (32/64) based upon DSDT revision */
AcpiUtSetIntegerWidth (AcpiGbl_DSDT->Revision);
/* Dump the entire DSDT */
ACPI_DEBUG_PRINT ((ACPI_DB_TABLES,
"Hex dump of entire DSDT, size %d (0x%X), Integer width = %d\n",
AcpiGbl_DSDT->Length, AcpiGbl_DSDT->Length, AcpiGbl_IntegerBitWidth));
ACPI_DUMP_BUFFER ((UINT8 *) AcpiGbl_DSDT, AcpiGbl_DSDT->Length);
/* Always delete the RSDP mapping, we are done with it */
AcpiTbDeleteAcpiTable (ACPI_TABLE_RSDP);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiGetFirmwareTable (
ACPI_STRING Signature,
UINT32 Instance,
UINT32 Flags,
ACPI_TABLE_HEADER **TablePointer)
{
ACPI_POINTER RsdpAddress;
ACPI_POINTER Address;
ACPI_STATUS Status;
ACPI_TABLE_HEADER Header;
ACPI_TABLE_DESC TableInfo;
ACPI_TABLE_DESC RsdtInfo;
UINT32 TableCount;
UINT32 i;
UINT32 j;
ACPI_FUNCTION_TRACE ("AcpiGetFirmwareTable");
/*
* Ensure that at least the table manager is initialized. We don't
* require that the entire ACPI subsystem is up for this interface
*/
/*
* If we have a buffer, we must have a length too
*/
if ((Instance == 0) ||
(!Signature) ||
(!TablePointer))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
RsdtInfo.Pointer = NULL;
if (!AcpiGbl_RSDP)
{
/* Get the RSDP */
Status = AcpiOsGetRootPointer (Flags, &RsdpAddress);
if (ACPI_FAILURE (Status))
{
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "RSDP not found\n"));
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
}
/* Map and validate the RSDP */
if ((Flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING)
{
Status = AcpiOsMapMemory (RsdpAddress.Pointer.Physical, sizeof (RSDP_DESCRIPTOR),
(void **) &AcpiGbl_RSDP);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
else
{
AcpiGbl_RSDP = RsdpAddress.Pointer.Logical;
}
/*
* The signature and checksum must both be correct
*/
if (ACPI_STRNCMP ((char *) AcpiGbl_RSDP, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0)
{
/* Nope, BAD Signature */
return_ACPI_STATUS (AE_BAD_SIGNATURE);
}
if (AcpiTbChecksum (AcpiGbl_RSDP, ACPI_RSDP_CHECKSUM_LENGTH) != 0)
{
/* Nope, BAD Checksum */
return_ACPI_STATUS (AE_BAD_CHECKSUM);
}
}
/* Get the RSDT and validate it */
AcpiTbGetRsdtAddress (&Address);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"RSDP located at %p, RSDT physical=%8.8X%8.8X \n",
AcpiGbl_RSDP,
ACPI_HIDWORD (Address.Pointer.Value),
ACPI_LODWORD (Address.Pointer.Value)));
/* Insert ProcessorMode flags */
Address.PointerType |= Flags;
Status = AcpiTbGetTable (&Address, &RsdtInfo);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Status = AcpiTbValidateRsdt (RsdtInfo.Pointer);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Get the number of table pointers within the RSDT */
TableCount = AcpiTbGetTableCount (AcpiGbl_RSDP, RsdtInfo.Pointer);
Address.PointerType = AcpiGbl_TableFlags | Flags;
/*
* Search the RSDT/XSDT for the correct instance of the
* requested table
*/
for (i = 0, j = 0; i < TableCount; i++)
{
/* Get the next table pointer, handle RSDT vs. XSDT */
if (AcpiGbl_RSDP->Revision < 2)
{
Address.Pointer.Value = ((RSDT_DESCRIPTOR *) RsdtInfo.Pointer)->TableOffsetEntry[i];
}
else
{
Address.Pointer.Value = ACPI_GET_ADDRESS (
((XSDT_DESCRIPTOR *) RsdtInfo.Pointer)->TableOffsetEntry[i]);
}
/* Get the table header */
Status = AcpiTbGetTableHeader (&Address, &Header);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Compare table signatures and table instance */
if (!ACPI_STRNCMP (Header.Signature, Signature, ACPI_NAME_SIZE))
{
/* An instance of the table was found */
j++;
if (j >= Instance)
{
/* Found the correct instance, get the entire table */
Status = AcpiTbGetTableBody (&Address, &Header, &TableInfo);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
*TablePointer = TableInfo.Pointer;
goto Cleanup;
}
}
}
/* Did not find the table */
Status = AE_NOT_EXIST;
Cleanup:
AcpiOsUnmapMemory (RsdtInfo.Pointer, (ACPI_SIZE) RsdtInfo.Pointer->Length);
return_ACPI_STATUS (Status);
}
static void
AcpiTbConvertFadt2 (
FADT_DESCRIPTOR *LocalFadt,
FADT_DESCRIPTOR *OriginalFadt)
{
/* We have an ACPI 2.0 FADT but we must copy it to our local buffer */
ACPI_MEMCPY (LocalFadt, OriginalFadt, sizeof (FADT_DESCRIPTOR));
/*
* "X" fields are optional extensions to the original V1.0 fields, so
* we must selectively expand V1.0 fields if the corresponding X field
* is zero.
*/
if (!(ACPI_GET_ADDRESS (LocalFadt->XFirmwareCtrl)))
{
ACPI_STORE_ADDRESS (LocalFadt->XFirmwareCtrl,
LocalFadt->V1_FirmwareCtrl);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XDsdt)))
{
ACPI_STORE_ADDRESS (LocalFadt->XDsdt, LocalFadt->V1_Dsdt);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1aEvtBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm1aEvtBlk,
LocalFadt->Pm1EvtLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1aEvtBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm1bEvtBlk,
LocalFadt->Pm1EvtLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1bEvtBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1aCntBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm1aCntBlk,
LocalFadt->Pm1CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1aCntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm1bCntBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm1bCntBlk,
LocalFadt->Pm1CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1bCntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPm2CntBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPm2CntBlk,
LocalFadt->Pm2CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm2CntBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XPmTmrBlk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XPmTmrBlk,
LocalFadt->PmTmLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_PmTmrBlk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XGpe0Blk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XGpe0Blk,
0, (ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Gpe0Blk);
}
if (!(ACPI_GET_ADDRESS (LocalFadt->XGpe1Blk.Address)))
{
AcpiTbInitGenericAddress (&LocalFadt->XGpe1Blk,
0, (ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Gpe1Blk);
}
/* Create separate GAS structs for the PM1 Enable registers */
AcpiTbInitGenericAddress (&AcpiGbl_XPm1aEnable,
(UINT8) ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen),
(ACPI_PHYSICAL_ADDRESS)
(ACPI_GET_ADDRESS (LocalFadt->XPm1aEvtBlk.Address) +
ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen)));
AcpiGbl_XPm1aEnable.AddressSpaceId =
LocalFadt->XPm1aEvtBlk.AddressSpaceId;
/* PM1B is optional; leave null if not present */
if (ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address))
{
AcpiTbInitGenericAddress (&AcpiGbl_XPm1bEnable,
(UINT8) ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen),
(ACPI_PHYSICAL_ADDRESS)
(ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address) +
ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen)));
AcpiGbl_XPm1bEnable.AddressSpaceId =
LocalFadt->XPm1bEvtBlk.AddressSpaceId;
}
}
static void
AcpiTbConvertFadt1 (
FADT_DESCRIPTOR *LocalFadt,
FADT_DESCRIPTOR_REV1 *OriginalFadt)
{
/* ACPI 1.0 FACS */
/* The BIOS stored FADT should agree with Revision 1.0 */
/*
* Copy the table header and the common part of the tables.
*
* The 2.0 table is an extension of the 1.0 table, so the entire 1.0
* table can be copied first, then expand some fields to 64 bits.
*/
ACPI_MEMCPY (LocalFadt, OriginalFadt, sizeof (FADT_DESCRIPTOR_REV1));
/* Convert table pointers to 64-bit fields */
ACPI_STORE_ADDRESS (LocalFadt->XFirmwareCtrl, LocalFadt->V1_FirmwareCtrl);
ACPI_STORE_ADDRESS (LocalFadt->XDsdt, LocalFadt->V1_Dsdt);
/*
* System Interrupt Model isn't used in ACPI 2.0
* (LocalFadt->Reserved1 = 0;)
*/
/*
* This field is set by the OEM to convey the preferred power management
* profile to OSPM. It doesn't have any 1.0 equivalence. Since we don't
* know what kind of 32-bit system this is, we will use "unspecified".
*/
LocalFadt->Prefer_PM_Profile = PM_UNSPECIFIED;
/*
* Processor Performance State Control. This is the value OSPM writes to
* the SMI_CMD register to assume processor performance state control
* responsibility. There isn't any equivalence in 1.0, leave it zeroed.
*/
LocalFadt->PstateCnt = 0;
/*
* Support for the _CST object and C States change notification.
* This data item hasn't any 1.0 equivalence so leave it zero.
*/
LocalFadt->CstCnt = 0;
/*
* FADT Rev 2 was an interim FADT released between ACPI 1.0 and ACPI 2.0.
* It primarily adds the FADT reset mechanism.
*/
if ((OriginalFadt->Revision == 2) &&
(OriginalFadt->Length == sizeof (FADT_DESCRIPTOR_REV2_MINUS)))
{
/*
* Grab the entire generic address struct, plus the 1-byte reset value
* that immediately follows.
*/
ACPI_MEMCPY (&LocalFadt->ResetRegister,
&(ACPI_CAST_PTR (FADT_DESCRIPTOR_REV2_MINUS,
OriginalFadt))->ResetRegister,
sizeof (ACPI_GENERIC_ADDRESS) + 1);
}
else
{
/*
* Since there isn't any equivalence in 1.0 and since it is highly
* likely that a 1.0 system has legacy support.
*/
LocalFadt->IapcBootArch = BAF_LEGACY_DEVICES;
}
/*
* Convert the V1.0 block addresses to V2.0 GAS structures
*/
AcpiTbInitGenericAddress (&LocalFadt->XPm1aEvtBlk, LocalFadt->Pm1EvtLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1aEvtBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPm1bEvtBlk, LocalFadt->Pm1EvtLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1bEvtBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPm1aCntBlk, LocalFadt->Pm1CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1aCntBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPm1bCntBlk, LocalFadt->Pm1CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm1bCntBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPm2CntBlk, LocalFadt->Pm2CntLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Pm2CntBlk);
AcpiTbInitGenericAddress (&LocalFadt->XPmTmrBlk, LocalFadt->PmTmLen,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_PmTmrBlk);
AcpiTbInitGenericAddress (&LocalFadt->XGpe0Blk, 0,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Gpe0Blk);
AcpiTbInitGenericAddress (&LocalFadt->XGpe1Blk, 0,
(ACPI_PHYSICAL_ADDRESS) LocalFadt->V1_Gpe1Blk);
/* Create separate GAS structs for the PM1 Enable registers */
AcpiTbInitGenericAddress (&AcpiGbl_XPm1aEnable,
(UINT8) ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen),
(ACPI_PHYSICAL_ADDRESS)
(ACPI_GET_ADDRESS (LocalFadt->XPm1aEvtBlk.Address) +
ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen)));
/* PM1B is optional; leave null if not present */
if (ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address))
{
AcpiTbInitGenericAddress (&AcpiGbl_XPm1bEnable,
(UINT8) ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen),
(ACPI_PHYSICAL_ADDRESS)
(ACPI_GET_ADDRESS (LocalFadt->XPm1bEvtBlk.Address) +
ACPI_DIV_2 (AcpiGbl_FADT->Pm1EvtLen)));
}
}
acpi_status
acpi_ev_gpe_initialize (void)
{
u32 i;
u32 j;
u32 register_index;
u32 gpe_number;
u16 gpe0register_count;
u16 gpe1_register_count;
FUNCTION_TRACE ("Ev_gpe_initialize");
/*
* Set up various GPE counts
*
* You may ask,why are the GPE register block lengths divided by 2?
* From the ACPI 2.0 Spec, section, 4.7.1.6 General-Purpose Event
* Registers, we have,
*
* "Each register block contains two registers of equal length
* GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
* GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
* The length of the GPE1_STS and GPE1_EN registers is equal to
* half the GPE1_LEN. If a generic register block is not supported
* then its respective block pointer and block length values in the
* FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
* to be the same size."
*/
gpe0register_count = (u16) DIV_2 (acpi_gbl_FADT->gpe0blk_len);
gpe1_register_count = (u16) DIV_2 (acpi_gbl_FADT->gpe1_blk_len);
acpi_gbl_gpe_register_count = gpe0register_count + gpe1_register_count;
if (!acpi_gbl_gpe_register_count) {
REPORT_WARNING (("Zero GPEs are defined in the FADT\n"));
return_ACPI_STATUS (AE_OK);
}
/*
* Allocate the Gpe information block
*/
acpi_gbl_gpe_registers = ACPI_MEM_CALLOCATE (acpi_gbl_gpe_register_count *
sizeof (acpi_gpe_registers));
if (!acpi_gbl_gpe_registers) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Could not allocate the Gpe_registers block\n"));
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*
* Allocate the Gpe dispatch handler block
* There are eight distinct GP events per register.
* Initialization to zeros is sufficient
*/
acpi_gbl_gpe_info = ACPI_MEM_CALLOCATE (MUL_8 (acpi_gbl_gpe_register_count) *
sizeof (acpi_gpe_level_info));
if (!acpi_gbl_gpe_info) {
ACPI_MEM_FREE (acpi_gbl_gpe_registers);
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not allocate the Gpe_info block\n"));
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Set the Gpe validation table to GPE_INVALID */
MEMSET (acpi_gbl_gpe_valid, (int) ACPI_GPE_INVALID, ACPI_NUM_GPE);
/*
* Initialize the Gpe information and validation blocks. A goal of these
* blocks is to hide the fact that there are two separate GPE register sets
* In a given block, the status registers occupy the first half, and
* the enable registers occupy the second half.
*/
/* GPE Block 0 */
register_index = 0;
for (i = 0; i < gpe0register_count; i++) {
acpi_gbl_gpe_registers[register_index].status_addr =
(u16) (ACPI_GET_ADDRESS (acpi_gbl_FADT->Xgpe0blk.address) + i);
acpi_gbl_gpe_registers[register_index].enable_addr =
(u16) (ACPI_GET_ADDRESS (acpi_gbl_FADT->Xgpe0blk.address) + i + gpe0register_count);
acpi_gbl_gpe_registers[register_index].gpe_base = (u8) MUL_8 (i);
for (j = 0; j < 8; j++) {
gpe_number = acpi_gbl_gpe_registers[register_index].gpe_base + j;
acpi_gbl_gpe_valid[gpe_number] = (u8) register_index;
}
/*
* Clear the status/enable registers. Note that status registers
* are cleared by writing a '1', while enable registers are cleared
* by writing a '0'.
*/
acpi_os_write_port (acpi_gbl_gpe_registers[register_index].enable_addr, 0x00, 8);
acpi_os_write_port (acpi_gbl_gpe_registers[register_index].status_addr, 0xFF, 8);
register_index++;
}
/* GPE Block 1 */
for (i = 0; i < gpe1_register_count; i++) {
acpi_gbl_gpe_registers[register_index].status_addr =
(u16) (ACPI_GET_ADDRESS (acpi_gbl_FADT->Xgpe1_blk.address) + i);
acpi_gbl_gpe_registers[register_index].enable_addr =
(u16) (ACPI_GET_ADDRESS (acpi_gbl_FADT->Xgpe1_blk.address) + i + gpe1_register_count);
acpi_gbl_gpe_registers[register_index].gpe_base =
(u8) (acpi_gbl_FADT->gpe1_base + MUL_8 (i));
for (j = 0; j < 8; j++) {
gpe_number = acpi_gbl_gpe_registers[register_index].gpe_base + j;
acpi_gbl_gpe_valid[gpe_number] = (u8) register_index;
}
/*
* Clear the status/enable registers. Note that status registers
* are cleared by writing a '1', while enable registers are cleared
* by writing a '0'.
*/
acpi_os_write_port (acpi_gbl_gpe_registers[register_index].enable_addr, 0x00, 8);
acpi_os_write_port (acpi_gbl_gpe_registers[register_index].status_addr, 0xFF, 8);
register_index++;
}
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "GPE registers: %X@%8.8X%8.8X (Blk0) %X@%8.8X%8.8X (Blk1)\n",
gpe0register_count, HIDWORD(acpi_gbl_FADT->Xgpe0blk.address), LODWORD(acpi_gbl_FADT->Xgpe0blk.address),
gpe1_register_count, HIDWORD(acpi_gbl_FADT->Xgpe1_blk.address), LODWORD(acpi_gbl_FADT->Xgpe1_blk.address)));
return_ACPI_STATUS (AE_OK);
}
