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Gfx device reports two classes of errors: uncorrectable and correctable. Depending on the severity uncorrectable errors are further classified Non-Fatal and Fatal. Correctable and Non-Fatal errors: These errors are reported as MSI. Bits in the Master Interrupt Register indicate the class of the error. The source of the error is then read from the Device Error Source Register. Fatal errors: These are reported as PCIe errors When a PCIe error is asserted, the OS will perform a SBR (Secondary Bus reset) which causes the driver to reload. The error registers are sticky and the values are maintained through SBR. Add basic support to handle these errors. Bspec: 50875, 53073, 53074, 53075, 53076 v2: Format commit message (Umesh) v3: fix documentation (Stuart) Cc: Stuart Summers <stuart.summers@intel.com> Co-developed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Signed-off-by: Riana Tauro <riana.tauro@intel.com> Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Link: https://lore.kernel.org/r/20250826063419.3022216-9-riana.tauro@intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
16 lines
315 B
C
16 lines
315 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2025 Intel Corporation
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*/
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#ifndef XE_HW_ERROR_H_
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#define XE_HW_ERROR_H_
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#include <linux/types.h>
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struct xe_tile;
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struct xe_device;
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void xe_hw_error_irq_handler(struct xe_tile *tile, const u32 master_ctl);
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void xe_hw_error_init(struct xe_device *xe);
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#endif
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