From: Joerg Roedel <joerg.roedel@amd.com>
To: <iommu@lists.linux-foundation.org>
Cc: <linux-kernel@vger.kernel.org>, Joerg Roedel <joerg.roedel@amd.com>
Subject: [PATCH 05/22] iommu/amd: Enable GT mode when supported by IOMMU
Date: Mon, 5 Dec 2011 14:34:20 +0100 [thread overview]
Message-ID: <1323092077-25501-6-git-send-email-joerg.roedel@amd.com> (raw)
In-Reply-To: <1323092077-25501-1-git-send-email-joerg.roedel@amd.com>
This feature needs to be enabled before IOMMUv2 DTEs can be
set up.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
drivers/iommu/amd_iommu_init.c | 9 +++++++++
drivers/iommu/amd_iommu_types.h | 1 +
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 60716ce..2c25ae3 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -623,6 +623,14 @@ static void __init free_ppr_log(struct amd_iommu *iommu)
free_pages((unsigned long)iommu->ppr_log, get_order(PPR_LOG_SIZE));
}
+static void iommu_enable_gt(struct amd_iommu *iommu)
+{
+ if (!iommu_feature(iommu, FEATURE_GT))
+ return;
+
+ iommu_feature_enable(iommu, CONTROL_GT_EN);
+}
+
/* sets a specific bit in the device table entry. */
static void set_dev_entry_bit(u16 devid, u8 bit)
{
@@ -1338,6 +1346,7 @@ static void enable_iommus(void)
iommu_enable_command_buffer(iommu);
iommu_enable_event_buffer(iommu);
iommu_enable_ppr_log(iommu);
+ iommu_enable_gt(iommu);
iommu_set_exclusion_range(iommu);
iommu_init_msi(iommu);
iommu_enable(iommu);
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index 59405c8..c26a16d 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -129,6 +129,7 @@
#define CONTROL_PPFLOG_EN 0x0dULL
#define CONTROL_PPFINT_EN 0x0eULL
#define CONTROL_PPR_EN 0x0fULL
+#define CONTROL_GT_EN 0x10ULL
/* command specific defines */
#define CMD_COMPL_WAIT 0x01
--
1.7.5.4
next prev parent reply other threads:[~2011-12-05 13:35 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-05 13:34 [PATCH 0/22] Initial AMD IOMMUv2 support Joerg Roedel
2011-12-05 13:34 ` [PATCH 01/22] iommu/amd: Convert dev_table_entry to u64 Joerg Roedel
2011-12-05 13:34 ` [PATCH 02/22] iommu/amd: Fix wrong address masks in tlb flush code Joerg Roedel
2011-12-05 13:34 ` [PATCH 03/22] iommu/amd: Get the maximum number of PASIDs supported Joerg Roedel
2011-12-05 13:34 ` [PATCH 04/22] iommu/amd: Setup PPR log when supported by IOMMU Joerg Roedel
2011-12-05 13:34 ` Joerg Roedel [this message]
2011-12-05 13:34 ` [PATCH 06/22] iommu/amd: Add iommuv2 flag to struct amd_iommu Joerg Roedel
2011-12-05 13:34 ` [PATCH 07/22] iommu/amd: Put IOMMUv2 capable devices in pt_domain Joerg Roedel
2011-12-05 13:34 ` [PATCH 08/22] iommu/amd: Implement notifier for PPR faults Joerg Roedel
2011-12-05 13:34 ` [PATCH 09/22] iommu/amd: Add amd_iommu_domain_direct_map function Joerg Roedel
2011-12-05 13:34 ` [PATCH 10/22] iommu/amd: Add support for IOMMUv2 domain mode Joerg Roedel
2011-12-05 13:34 ` [PATCH 11/22] iommu/amd: Implement IOMMUv2 TLB flushing routines Joerg Roedel
2011-12-05 13:34 ` [PATCH 12/22] iommu/amd: Implement functions to manage GCR3 table Joerg Roedel
2011-12-05 13:34 ` [PATCH 13/22] iommu/amd: Implement function to send PPR completions Joerg Roedel
2011-12-05 13:34 ` [PATCH 14/22] iommu/amd: Add function to get IOMMUv2 domain for pdev Joerg Roedel
2011-12-05 13:34 ` [PATCH 15/22] iommu/amd: Add device errata handling Joerg Roedel
2011-12-05 13:34 ` [PATCH 16/22] iommu/amd: Add stat counter for IOMMUv2 events Joerg Roedel
2011-12-05 13:34 ` [PATCH 17/22] iommu/amd: Add driver stub for AMD IOMMUv2 support Joerg Roedel
2011-12-05 13:34 ` [PATCH 18/22] iommu/amd: Implement device aquisition code for IOMMUv2 Joerg Roedel
2011-12-05 13:34 ` [PATCH 19/22] iommu/amd: Add routines to bind/unbind a pasid Joerg Roedel
2011-12-05 13:34 ` [PATCH 20/22] iommu/amd: Implement IO page-fault handler Joerg Roedel
2011-12-14 16:13 ` Jerome Glisse
2011-12-14 16:17 ` Joerg Roedel
2011-12-05 13:34 ` [PATCH 21/22] iommu/amd: Implement notifiers for IOMMUv2 Joerg Roedel
2011-12-05 13:34 ` [PATCH 22/22] iommu/amd: Add invalid_ppr callback Joerg Roedel
2011-12-08 20:47 ` [PATCH 0/22] Initial AMD IOMMUv2 support Jerome Glisse
2011-12-09 14:43 ` Joerg Roedel
2011-12-14 14:26 ` Joerg Roedel
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