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Message-ID: <20200316154507.GF304669@myrica>
Date: Mon, 16 Mar 2020 16:45:07 +0100
From: Jean-Philippe Brucker <jean-philippe@...aro.org>
To: Joerg Roedel <joro@...tes.org>
Cc: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-mediatek@...ts.infradead.org,
virtualization@...ts.linux-foundation.org,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Hanjun Guo <guohanjun@...wei.com>,
Sudeep Holla <sudeep.holla@....com>,
Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
Will Deacon <will@...nel.org>,
Robin Murphy <robin.murphy@....com>,
Matthias Brugger <matthias.bgg@...il.com>,
Thierry Reding <thierry.reding@...il.com>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH 05/15] iommu: Rename struct iommu_param to dev_iommu
On Tue, Mar 10, 2020 at 10:12:19AM +0100, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@...e.de>
>
> The term dev_iommu aligns better with other existing structures and
> their accessor functions.
>
> Tested-by: Will Deacon <will@...nel.org> # arm-smmu
> Signed-off-by: Joerg Roedel <jroedel@...e.de>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@...aro.org>
> ---
> drivers/iommu/iommu.c | 28 ++++++++++++++--------------
> include/linux/device.h | 6 +++---
> include/linux/iommu.h | 4 ++--
> 3 files changed, 19 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
> index 3e3528436e0b..beac2ef063dd 100644
> --- a/drivers/iommu/iommu.c
> +++ b/drivers/iommu/iommu.c
> @@ -152,9 +152,9 @@ void iommu_device_unregister(struct iommu_device *iommu)
> }
> EXPORT_SYMBOL_GPL(iommu_device_unregister);
>
> -static struct iommu_param *iommu_get_dev_param(struct device *dev)
> +static struct dev_iommu *dev_iommu_get(struct device *dev)
> {
> - struct iommu_param *param = dev->iommu_param;
> + struct dev_iommu *param = dev->iommu;
>
> if (param)
> return param;
> @@ -164,14 +164,14 @@ static struct iommu_param *iommu_get_dev_param(struct device *dev)
> return NULL;
>
> mutex_init(¶m->lock);
> - dev->iommu_param = param;
> + dev->iommu = param;
> return param;
> }
>
> -static void iommu_free_dev_param(struct device *dev)
> +static void dev_iommu_free(struct device *dev)
> {
> - kfree(dev->iommu_param);
> - dev->iommu_param = NULL;
> + kfree(dev->iommu);
> + dev->iommu = NULL;
> }
>
> int iommu_probe_device(struct device *dev)
> @@ -183,7 +183,7 @@ int iommu_probe_device(struct device *dev)
> if (!ops)
> return -EINVAL;
>
> - if (!iommu_get_dev_param(dev))
> + if (!dev_iommu_get(dev))
> return -ENOMEM;
>
> if (!try_module_get(ops->owner)) {
> @@ -200,7 +200,7 @@ int iommu_probe_device(struct device *dev)
> err_module_put:
> module_put(ops->owner);
> err_free_dev_param:
> - iommu_free_dev_param(dev);
> + dev_iommu_free(dev);
> return ret;
> }
>
> @@ -211,9 +211,9 @@ void iommu_release_device(struct device *dev)
> if (dev->iommu_group)
> ops->remove_device(dev);
>
> - if (dev->iommu_param) {
> + if (dev->iommu) {
> module_put(ops->owner);
> - iommu_free_dev_param(dev);
> + dev_iommu_free(dev);
> }
> }
>
> @@ -972,7 +972,7 @@ int iommu_register_device_fault_handler(struct device *dev,
> iommu_dev_fault_handler_t handler,
> void *data)
> {
> - struct iommu_param *param = dev->iommu_param;
> + struct dev_iommu *param = dev->iommu;
> int ret = 0;
>
> if (!param)
> @@ -1015,7 +1015,7 @@ EXPORT_SYMBOL_GPL(iommu_register_device_fault_handler);
> */
> int iommu_unregister_device_fault_handler(struct device *dev)
> {
> - struct iommu_param *param = dev->iommu_param;
> + struct dev_iommu *param = dev->iommu;
> int ret = 0;
>
> if (!param)
> @@ -1055,7 +1055,7 @@ EXPORT_SYMBOL_GPL(iommu_unregister_device_fault_handler);
> */
> int iommu_report_device_fault(struct device *dev, struct iommu_fault_event *evt)
> {
> - struct iommu_param *param = dev->iommu_param;
> + struct dev_iommu *param = dev->iommu;
> struct iommu_fault_event *evt_pending = NULL;
> struct iommu_fault_param *fparam;
> int ret = 0;
> @@ -1104,7 +1104,7 @@ int iommu_page_response(struct device *dev,
> int ret = -EINVAL;
> struct iommu_fault_event *evt;
> struct iommu_fault_page_request *prm;
> - struct iommu_param *param = dev->iommu_param;
> + struct dev_iommu *param = dev->iommu;
> struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
>
> if (!domain || !domain->ops->page_response)
> diff --git a/include/linux/device.h b/include/linux/device.h
> index fa04dfd22bbc..405a8f11bec1 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -44,7 +44,7 @@ struct iommu_ops;
> struct iommu_group;
> struct iommu_fwspec;
> struct dev_pin_info;
> -struct iommu_param;
> +struct dev_iommu;
>
> /**
> * struct subsys_interface - interfaces to device functions
> @@ -514,7 +514,7 @@ struct dev_links_info {
> * device (i.e. the bus driver that discovered the device).
> * @iommu_group: IOMMU group the device belongs to.
> * @iommu_fwspec: IOMMU-specific properties supplied by firmware.
> - * @iommu_param: Per device generic IOMMU runtime data
> + * @iommu: Per device generic IOMMU runtime data
> *
> * @offline_disabled: If set, the device is permanently online.
> * @offline: Set after successful invocation of bus type's .offline().
> @@ -614,7 +614,7 @@ struct device {
> void (*release)(struct device *dev);
> struct iommu_group *iommu_group;
> struct iommu_fwspec *iommu_fwspec;
> - struct iommu_param *iommu_param;
> + struct dev_iommu *iommu;
>
> bool offline_disabled:1;
> bool offline:1;
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index 3c4ca041d7a2..1c9fa5c1174b 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -365,7 +365,7 @@ struct iommu_fault_param {
> };
>
> /**
> - * struct iommu_param - collection of per-device IOMMU data
> + * struct dev_iommu - Collection of per-device IOMMU data
> *
> * @fault_param: IOMMU detected device fault reporting data
> *
> @@ -373,7 +373,7 @@ struct iommu_fault_param {
> * struct iommu_group *iommu_group;
> * struct iommu_fwspec *iommu_fwspec;
> */
> -struct iommu_param {
> +struct dev_iommu {
> struct mutex lock;
> struct iommu_fault_param *fault_param;
> };
> --
> 2.17.1
>
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