diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2016-08-23 13:52:37 -0500 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-09-05 12:41:46 +0200 |
| commit | bd6fcefc66f6d038406e38edf96a95d9842f819d (patch) | |
| tree | 46e42ae811db8d9944bcc8f96d1eb0e6a90906a8 /include | |
| parent | 8bda0cfbdc1a6278a1bbdba795139da682f296ff (diff) | |
| download | linux-bd6fcefc66f6d038406e38edf96a95d9842f819d.tar.bz2 | |
iommu/amd: Adding GALOG interrupt handler
This patch adds AMD IOMMU guest virtual APIC log (GALOG) handler.
When IOMMU hardware receives an interrupt targeting a blocking vcpu,
it creates an entry in the GALOG, and generates an interrupt to notify
the AMD IOMMU driver.
At this point, the driver processes the log entry, and notify the SVM
driver via the registered iommu_ga_log_notifier function.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/amd-iommu.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/include/linux/amd-iommu.h b/include/linux/amd-iommu.h index 2b08e79f5100..465d096a5f4b 100644 --- a/include/linux/amd-iommu.h +++ b/include/linux/amd-iommu.h @@ -168,11 +168,25 @@ typedef void (*amd_iommu_invalidate_ctx)(struct pci_dev *pdev, int pasid); extern int amd_iommu_set_invalidate_ctx_cb(struct pci_dev *pdev, amd_iommu_invalidate_ctx cb); - -#else +#else /* CONFIG_AMD_IOMMU */ static inline int amd_iommu_detect(void) { return -ENODEV; } -#endif +#endif /* CONFIG_AMD_IOMMU */ + +#if defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) + +/* IOMMU AVIC Function */ +extern int amd_iommu_register_ga_log_notifier(int (*notifier)(u32)); + +#else /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */ + +static inline int +amd_iommu_register_ga_log_notifier(int (*notifier)(u32)) +{ + return 0; +} + +#endif /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */ #endif /* _ASM_X86_AMD_IOMMU_H */ |