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iommu/vt-d: Report more information about invalidation errors

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When the invalidation queue errors are encountered, dump the information
logged by the VT-d hardware together with the pending queue invalidation
descriptors.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Tested-by: Guo Kaijie <Kaijie.Guo@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210318005340.187311-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2021-03-18 08:53:40 +08:00 • committed by Joerg Roedel
parent dec991e472
commit 6ca69e5841
2 changed files with 70 additions and 4 deletions
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6
include/linux/intel-iommu.h
View file

@ -20,6 +20,7 @@
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/dmar.h>
#include <linux/ioasid.h>
#include <linux/bitfield.h>
#include <asm/cacheflush.h>
#include <asm/iommu.h>
@ -80,6 +81,7 @@
#define DMAR_IQ_SHIFT 4 /* Invalidation queue head/tail shift */
#define DMAR_IQA_REG 0x90 /* Invalidation queue addr register */
#define DMAR_ICS_REG 0x9c /* Invalidation complete status register */
#define DMAR_IQER_REG 0xb0 /* Invalidation queue error record register */
#define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr register */
#define DMAR_PQH_REG 0xc0 /* Page request queue head register */
#define DMAR_PQT_REG 0xc8 /* Page request queue tail register */
@ -126,6 +128,10 @@
#define DMAR_VCMD_REG 0xe10 /* Virtual command register */
#define DMAR_VCRSP_REG 0xe20 /* Virtual command response register */
#define DMAR_IQER_REG_IQEI(reg) FIELD_GET(GENMASK_ULL(3, 0), reg)
#define DMAR_IQER_REG_ITESID(reg) FIELD_GET(GENMASK_ULL(47, 32), reg)
#define DMAR_IQER_REG_ICESID(reg) FIELD_GET(GENMASK_ULL(63, 48), reg)
#define OFFSET_STRIDE (9)
#define dmar_readq(a) readq(a)