130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
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/*++
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Copyright (c) 1989-2000 Microsoft Corporation
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Component Name:
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HALIA64
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Module Name:
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xxhal.c
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Abstract:
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This module determines the HAL IA64 common features based on processor
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and platform types. This exposes the processor and system features
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that the HAL would use to enable / disable its own features.
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By the mean of HAL exported interfaces or exported global variables,
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the HAL exposes its supported features.
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Author:
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David N. Cutler (davec) 5-Mar-1989
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Environment:
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ToBeSpecified
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Revision History:
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3/23/2000 Thierry Fevrier (v-thief@microsoft.com):
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Initial version
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--*/
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#include "halp.h"
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extern ULONG HalpMaxCPEImplemented;
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(INIT,HalpGetFeatureBits)
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#endif
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ULONG
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HalpGetFeatureBits (
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VOID
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)
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{
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ULONG bits = HALP_FEATURE_INIT;
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PKPRCB prcb = KeGetCurrentPrcb();
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//
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// Determine Processor type and System type.
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//
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// For the processor, this could come from:
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// - PAL_BUS_GET_FEATURES
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// - PAL_DEBUG_INFO ??
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// - PAL_FREQ_BASE
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// - PAL_FREQ_RATIOS
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// - PAL_PERF_MON_INFO
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// - PAL_PROC_GET_FEATURES
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// - PAL_REGISTER_INFO
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// - PAL_VERSION
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//
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// NOT-YET...
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//
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// Determine Processor features:
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// like support for Processor Hardware Performance Monitor Events and
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// - HAL_NO_SPECULATION
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// - HAL_MCA_PRESENT
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// NOT-YET - should call PAL PERF_MON call.
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bits |= HAL_PERF_EVENTS;
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//
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// Determine Platform features:
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// like support for Platform Performance Monitor Events...
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//
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// NOT-YET - should call SAL calls.
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//
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// Default software HAL support for IA64 Errors (MCA, CMC, CPE).
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//
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// However, we already know if we found an ACPI platform interrupt entry which identifier
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// is PLATFORM_INT_CPE.
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//
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bits |= HAL_MCA_PRESENT;
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if ( HalpCmcInfo.Stats.MaxLogSize ) {
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if ( HalpCmcInfo.Stats.MaxLogSize >= sizeof( ERROR_RECORD_HEADER )) {
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bits |= HAL_CMC_PRESENT;
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}
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else if ( prcb->Number == 0 ) {
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HalDebugPrint(( HAL_ERROR,
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"HAL!HalpGetFeatureBits: Invalid max CMC log size from SAL\n" ));
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}
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}
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//
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// Thierry 03/11/2001: WARNING WARNING
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// For the final release, the following HalpMaxCPEImplemented should be eliminated.
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// However the current FWs MCE situation is rather pathetic:
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// **** Do not allow the setting of HAL_CPE_PRESENT if HalpMaxCPEImplemented == 0 ****
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//
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// [good] reasons:
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// - We bugcheck with the current BigSur SAL/FW (<= build 99) at SAL_GET_STATE_INFO calls,
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// the FW assuming that we are calling the SAL MC related functions in physical mode.
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// - With the Lion SAL/FW (<= build 75), we bugcheck after getting MCA logs at boot time,
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// the FW having some virtualization issues.
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// Intel is committed to provide working FWs soon (< 2 weeks...).
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//
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if ( HalpMaxCPEImplemented && HalpCpeInfo.Stats.MaxLogSize ) {
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if ( HalpCpeInfo.Stats.MaxLogSize >= sizeof( ERROR_RECORD_HEADER ) ) {
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bits |= HAL_CPE_PRESENT;
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}
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else if ( prcb->Number == 0 ) {
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HalDebugPrint(( HAL_ERROR,
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"HAL!HalpGetFeatureBits: Invalid max CPE log size from SAL\n" ));
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}
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}
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return bits;
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} // HalpGetFeatureBits()
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