Messages in this thread Patch in this message | | | From | Baoquan He <> | Subject | [Patch v4 4/9] iommu/amd: add early_enable_iommu() helper function | Date | Wed, 25 May 2016 14:28:50 +0800 |
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From: Baoquan HE <bhe@dhcp-129-10.nay.redhat.com>
This can make later kdump change easier.
Signed-off-by: Baoquan He <bhe@redhat.com> --- drivers/iommu/amd_iommu_init.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 9e1dfcb..9c1aa54 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1673,6 +1673,18 @@ static void iommu_apply_resume_quirks(struct amd_iommu *iommu) iommu->stored_addr_lo | 1); } +static void early_enable_iommu(struct amd_iommu *iommu) +{ + iommu_disable(iommu); + iommu_init_flags(iommu); + iommu_set_device_table(iommu); + iommu_enable_command_buffer(iommu); + iommu_enable_event_buffer(iommu); + iommu_set_exclusion_range(iommu); + iommu_enable(iommu); + iommu_flush_all_caches(iommu); +} + /* * This function finally enables all IOMMUs found in the system after * they have been initialized @@ -1681,16 +1693,8 @@ static void early_enable_iommus(void) { struct amd_iommu *iommu; - for_each_iommu(iommu) { - iommu_disable(iommu); - iommu_init_flags(iommu); - iommu_set_device_table(iommu); - iommu_enable_command_buffer(iommu); - iommu_enable_event_buffer(iommu); - iommu_set_exclusion_range(iommu); - iommu_enable(iommu); - iommu_flush_all_caches(iommu); - } + for_each_iommu(iommu) + early_enable_iommu(iommu); } static void enable_iommus_v2(void) -- 2.5.5
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