diff mbox series

[v9,1/4] iommu: Add dummy dev_iommu_fwspec_get() helper

Message ID 20221028130242.20900-1-pshete@nvidia.com
State New
Headers
Series [v9,1/4] iommu: Add dummy dev_iommu_fwspec_get() helper |

Commit Message

Prathamesh Shete Oct. 28, 2022, 1:02 p.m. UTC 
  This dummy implementation is useful to avoid a dependency on the
IOMMU_API Kconfig symbol in drivers that can optionally use the IOMMU
API.

In order to fully use this, also move the struct iommu_fwspec definition
out of the IOMMU_API protected region.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
---
 include/linux/iommu.h | 39 +++++++++++++++++++--------------------
 1 file changed, 19 insertions(+), 20 deletions(-)

Comments

Ulf Hansson Nov. 2, 2022, 3:27 p.m. UTC | #1 
On Fri, 28 Oct 2022 at 15:02, Prathamesh Shete <pshete@nvidia.com> wrote:
>
> This dummy implementation is useful to avoid a dependency on the
> IOMMU_API Kconfig symbol in drivers that can optionally use the IOMMU
> API.
>
> In order to fully use this, also move the struct iommu_fwspec definition
> out of the IOMMU_API protected region.
>
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>

It seems like you claimed authorship of the patch [1], that was
authored by Thierry and updated the commit message header.

Can you please restore the patch to its original that was posted by Thierry?

Kind regards
Uffe

[1]
https://lore.kernel.org/linux-mmc/20221018105149.820062-1-thierry.reding@gmail.com/



> ---
>  include/linux/iommu.h | 39 +++++++++++++++++++--------------------
>  1 file changed, 19 insertions(+), 20 deletions(-)
>
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index ea30f00dc145..afa829bc4356 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -173,6 +173,25 @@ enum iommu_dev_features {
>
>  #define IOMMU_PASID_INVALID    (-1U)
>
> +/**
> + * struct iommu_fwspec - per-device IOMMU instance data
> + * @ops: ops for this device's IOMMU
> + * @iommu_fwnode: firmware handle for this device's IOMMU
> + * @flags: IOMMU_FWSPEC_* flags
> + * @num_ids: number of associated device IDs
> + * @ids: IDs which this device may present to the IOMMU
> + */
> +struct iommu_fwspec {
> +       const struct iommu_ops  *ops;
> +       struct fwnode_handle    *iommu_fwnode;
> +       u32                     flags;
> +       unsigned int            num_ids;
> +       u32                     ids[];
> +};
> +
> +/* ATS is supported */
> +#define IOMMU_FWSPEC_PCI_RC_ATS                        (1 << 0)
> +
>  #ifdef CONFIG_IOMMU_API
>
>  /**
> @@ -600,25 +619,6 @@ extern struct iommu_group *generic_device_group(struct device *dev);
>  /* FSL-MC device grouping function */
>  struct iommu_group *fsl_mc_device_group(struct device *dev);
>
> -/**
> - * struct iommu_fwspec - per-device IOMMU instance data
> - * @ops: ops for this device's IOMMU
> - * @iommu_fwnode: firmware handle for this device's IOMMU
> - * @flags: IOMMU_FWSPEC_* flags
> - * @num_ids: number of associated device IDs
> - * @ids: IDs which this device may present to the IOMMU
> - */
> -struct iommu_fwspec {
> -       const struct iommu_ops  *ops;
> -       struct fwnode_handle    *iommu_fwnode;
> -       u32                     flags;
> -       unsigned int            num_ids;
> -       u32                     ids[];
> -};
> -
> -/* ATS is supported */
> -#define IOMMU_FWSPEC_PCI_RC_ATS                        (1 << 0)
> -
>  /**
>   * struct iommu_sva - handle to a device-mm bond
>   */
> @@ -682,7 +682,6 @@ bool iommu_group_dma_owner_claimed(struct iommu_group *group);
>
>  struct iommu_ops {};
>  struct iommu_group {};
> -struct iommu_fwspec {};
>  struct iommu_device {};
>  struct iommu_fault_param {};
>  struct iommu_iotlb_gather {};
> --
> 2.17.1
>
diff mbox series

Patch

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index ea30f00dc145..afa829bc4356 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -173,6 +173,25 @@  enum iommu_dev_features {
 
 #define IOMMU_PASID_INVALID	(-1U)
 
+/**
+ * struct iommu_fwspec - per-device IOMMU instance data
+ * @ops: ops for this device's IOMMU
+ * @iommu_fwnode: firmware handle for this device's IOMMU
+ * @flags: IOMMU_FWSPEC_* flags
+ * @num_ids: number of associated device IDs
+ * @ids: IDs which this device may present to the IOMMU
+ */
+struct iommu_fwspec {
+	const struct iommu_ops	*ops;
+	struct fwnode_handle	*iommu_fwnode;
+	u32			flags;
+	unsigned int		num_ids;
+	u32			ids[];
+};
+
+/* ATS is supported */
+#define IOMMU_FWSPEC_PCI_RC_ATS			(1 << 0)
+
 #ifdef CONFIG_IOMMU_API
 
 /**
@@ -600,25 +619,6 @@  extern struct iommu_group *generic_device_group(struct device *dev);
 /* FSL-MC device grouping function */
 struct iommu_group *fsl_mc_device_group(struct device *dev);
 
-/**
- * struct iommu_fwspec - per-device IOMMU instance data
- * @ops: ops for this device's IOMMU
- * @iommu_fwnode: firmware handle for this device's IOMMU
- * @flags: IOMMU_FWSPEC_* flags
- * @num_ids: number of associated device IDs
- * @ids: IDs which this device may present to the IOMMU
- */
-struct iommu_fwspec {
-	const struct iommu_ops	*ops;
-	struct fwnode_handle	*iommu_fwnode;
-	u32			flags;
-	unsigned int		num_ids;
-	u32			ids[];
-};
-
-/* ATS is supported */
-#define IOMMU_FWSPEC_PCI_RC_ATS			(1 << 0)
-
 /**
  * struct iommu_sva - handle to a device-mm bond
  */
@@ -682,7 +682,6 @@  bool iommu_group_dma_owner_claimed(struct iommu_group *group);
 
 struct iommu_ops {};
 struct iommu_group {};
-struct iommu_fwspec {};
 struct iommu_device {};
 struct iommu_fault_param {};
 struct iommu_iotlb_gather {};