From: Shyam Saini <shyamsaini@linux.microsoft.com>
To: thierry.reding@gmail.com, robin.murphy@arm.com, robh@kernel.org,
joro@8bytes.org, jgg@ziepe.ca
Cc: iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, virtualization@lists.linux.dev,
will@kernel.org, jacob.pan@linux.microsoft.com,
eric.auger@redhat.com, code@tyhicks.com,
eahariha@linux.microsoft.com, vijayb@linux.microsoft.com,
bboscaccy@linux.microsoft.com, saravanak@google.com,
krzk+dt@kernel.org, conor+dt@kernel.org, lizhi.hou@amd.com,
clement.leger@bootlin.com
Subject: [PATCH v4 1/4] arm-smmu: move MSI_IOVA macro definitions
Date: Tue, 9 Sep 2025 08:45:57 -0700 [thread overview]
Message-ID: <20250909154600.910110-2-shyamsaini@linux.microsoft.com> (raw)
In-Reply-To: <20250909154600.910110-1-shyamsaini@linux.microsoft.com>
MSI_IOVA* are common among different iommu/smu drivers,
so move them to common iommu.h header file.
Suggested-by: Jacob Pan <jacob.pan@linux.microsoft.com>
Signed-off-by: Shyam Saini <shyamsaini@linux.microsoft.com>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 3 ---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 3 ---
drivers/iommu/virtio-iommu.c | 2 --
include/linux/iommu.h | 3 +++
4 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
index ae23aacc38402..16f5856b4c0e2 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
@@ -505,9 +505,6 @@ static inline unsigned int arm_smmu_cdtab_l2_idx(unsigned int ssid)
#define ARM_SMMU_POLL_TIMEOUT_US 1000000 /* 1s! */
#define ARM_SMMU_POLL_SPIN_COUNT 10
-#define MSI_IOVA_BASE 0x8000000
-#define MSI_IOVA_LENGTH 0x100000
-
enum pri_resp {
PRI_RESP_DENY = 0,
PRI_RESP_FAIL = 1,
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 4ced4b5bee4df..4a07650911991 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -50,9 +50,6 @@
*/
#define QCOM_DUMMY_VAL -1
-#define MSI_IOVA_BASE 0x8000000
-#define MSI_IOVA_LENGTH 0x100000
-
static int force_stage;
module_param(force_stage, int, S_IRUGO);
MODULE_PARM_DESC(force_stage,
diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index b39d6f134ab28..f3d830656cf29 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -24,8 +24,6 @@
#include "dma-iommu.h"
-#define MSI_IOVA_BASE 0x8000000
-#define MSI_IOVA_LENGTH 0x100000
#define VIOMMU_REQUEST_VQ 0
#define VIOMMU_EVENT_VQ 1
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index c30d12e16473d..09a35af5a545d 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -1554,6 +1554,9 @@ static inline void iommu_debugfs_setup(void) {}
#endif
#ifdef CONFIG_IOMMU_DMA
+#define MSI_IOVA_BASE 0x8000000
+#define MSI_IOVA_LENGTH 0x100000
+
int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base);
#else /* CONFIG_IOMMU_DMA */
static inline int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base)
--
2.34.1
next prev parent reply other threads:[~2025-09-09 17:25 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-09 15:45 [PATCH v4 0/4] arm-smmu: select suitable MSI IOVA Shyam Saini
2025-09-09 15:45 ` Shyam Saini [this message]
2025-09-09 15:45 ` [PATCH v4 2/4] iommu/of: fix device tree configuration for PCI devices Shyam Saini
2025-09-24 17:44 ` Robin Murphy
2025-09-09 15:45 ` [PATCH v4 3/4] arm-smmu: select suitable MSI IOVA Shyam Saini
2025-09-18 16:49 ` Will Deacon
2025-09-18 22:43 ` Jason Gunthorpe
2025-09-19 7:33 ` Will Deacon
2025-09-19 12:08 ` Jason Gunthorpe
2025-09-23 15:56 ` Shyam Saini
2025-09-23 16:19 ` Jason Gunthorpe
2025-09-24 18:59 ` Robin Murphy
2025-09-09 15:46 ` [PATCH v4 4/4] drivers: iommu: refactor arm_smmu_get_resv_regions Shyam Saini
2025-09-09 15:58 ` Jason Gunthorpe
2025-09-15 16:28 ` Shyam Saini
2025-09-15 22:59 ` Jason Gunthorpe
2025-09-13 0:23 ` kernel test robot
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