From: Baoquan He <bhe@redhat.com>
To: joro@8bytes.org
Cc: Baoquan He <bhe@redhat.com>,
kexec@lists.infradead.org, xlpang@redhat.com,
linux-kernel@vger.kernel.org, Vincent.Wan@amd.com,
iommu@lists.linux-foundation.org, dyoung@redhat.com
Subject: [PATCH v5 2/8] iommu/amd: add early_enable_iommu() wrapper function
Date: Thu, 15 Sep 2016 23:03:20 +0800 [thread overview]
Message-ID: <1473951806-25511-3-git-send-email-bhe@redhat.com> (raw)
In-Reply-To: <1473951806-25511-1-git-send-email-bhe@redhat.com>
Move per iommu enabling code into a wrapper function early_enable_iommu().
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 9bf1a04..77c44c8 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1887,6 +1887,18 @@ 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
@@ -1895,16 +1907,8 @@ 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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next prev parent reply other threads:[~2016-09-15 15:04 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 15:03 [PATCH v5 0/8] Fix kdump faults on system with amd iommu Baoquan He
2016-09-15 15:03 ` [PATCH v5 1/8] iommu/amd: Detect pre enabled translation Baoquan He
2016-09-15 15:03 ` Baoquan He [this message]
2016-09-15 15:03 ` [PATCH v5 3/8] iommu/amd: Define bit fields for DTE particularly Baoquan He
2016-09-15 15:03 ` [PATCH v5 4/8] iommu/amd: Add function copy_dev_tables Baoquan He
[not found] ` <20160920115804.GC3541@8bytes.org>
2016-09-21 10:17 ` Baoquan He
2016-09-15 15:03 ` [PATCH v5 5/8] iommu/amd: copy old trans table from old kernel Baoquan He
[not found] ` <20160920124031.GD3541@8bytes.org>
2016-09-21 10:18 ` Baoquan He
2016-09-28 1:37 ` Baoquan He
2016-09-28 13:01 ` Baoquan He
2016-09-15 15:03 ` [PATCH v5 6/8] iommu/amd: Do not re-enable dev table entries in kdump Baoquan He
[not found] ` <20160920124241.GE3541@8bytes.org>
2016-09-21 10:20 ` Baoquan He
2016-09-15 15:03 ` [PATCH v5 7/8] iommu/amd: Don't update domain info to dte entry at iommu init stage Baoquan He
[not found] ` <20160920125004.GF3541@8bytes.org>
2016-09-21 10:26 ` Baoquan He
2016-09-21 13:21 ` Baoquan He
2016-09-15 15:03 ` [PATCH v5 8/8] iommu/amd: Update domain into to dte entry during device driver init Baoquan He
[not found] ` <20160920125330.GG3541@8bytes.org>
2016-09-21 10:31 ` Baoquan He
2016-09-27 1:51 ` Baoquan He
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