From: Feng Wu <feng.wu@intel.com>
To: dwmw2@infradead.org, joro@8bytes.org
Cc: jiang.liu@linux.intel.com, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, Feng Wu <feng.wu@intel.com>
Subject: [v4 5/8] iommu, x86: Add cap_pi_support() to detect VT-d PI capability
Date: Mon, 2 Feb 2015 16:07:01 +0800 [thread overview]
Message-ID: <1422864424-19411-6-git-send-email-feng.wu@intel.com> (raw)
In-Reply-To: <1422864424-19411-1-git-send-email-feng.wu@intel.com>
Add helper function to detect VT-d Posted-Interrupts capability.
Signed-off-by: Feng Wu <feng.wu@intel.com>
Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
---
include/linux/intel-iommu.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index ecaf3a9..8174ae8 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -87,6 +87,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
/*
* Decoding Capability Register
*/
+#define cap_pi_support(c) (((c) >> 59) & 1)
#define cap_read_drain(c) (((c) >> 55) & 1)
#define cap_write_drain(c) (((c) >> 54) & 1)
#define cap_max_amask_val(c) (((c) >> 48) & 0x3f)
--
1.7.1
next prev parent reply other threads:[~2015-02-02 8:18 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-02 8:06 [v4 0/8] Add VT-d Posted-Interrupts support - IOMMU part Feng Wu
2015-02-02 8:06 ` [v4 1/8] iommu: Add new member capability to struct irq_remap_ops Feng Wu
2015-02-02 8:06 ` [v4 2/8] iommu, x86: Define new irte structure for VT-d Posted-Interrupts Feng Wu
2015-03-23 11:57 ` Joerg Roedel
2015-03-24 2:32 ` Wu, Feng
2015-03-31 15:16 ` Joerg Roedel
2015-04-01 8:51 ` Wu, Feng
2015-02-02 8:06 ` [v4 3/8] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip Feng Wu
2015-02-02 8:07 ` [v4 4/8] iommu, x86: No need to migrating irq for VT-d Posted-Interrupts Feng Wu
2015-02-02 8:07 ` Feng Wu [this message]
2015-02-02 8:07 ` [v4 6/8] iommu, x86: Setup Posted-Interrupts capability for Intel iommu Feng Wu
2015-02-02 8:07 ` [v4 7/8] iommu, x86: define irq_remapping_cap() Feng Wu
2015-02-02 8:07 ` [v4 8/8] iommu, x86: Properly handler PI for IOMMU hotplug Feng Wu
2015-04-02 11:28 ` [v4 0/8] Add VT-d Posted-Interrupts support - IOMMU part Joerg Roedel
2015-04-03 8:12 ` Li, ZhenHua
2015-04-07 5:02 ` Wu, Feng
-- strict thread matches above, loose matches on Subject: below --
2015-02-02 8:01 Feng Wu
2015-02-02 8:01 ` [v4 5/8] iommu, x86: Add cap_pi_support() to detect VT-d PI capability Feng Wu
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