| Message ID | 20210301084257.945454-17-hch@lst.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [01/17] iommu: remove the unused domain_window_disable method | expand |
On 2021-03-01 08:42, Christoph Hellwig wrote: > Signed-off-by: Christoph Hellwig <hch@lst.de> Moreso than the previous patch, where the feature is at least relatively generic (note that there's a bunch of in-flight development around DOMAIN_ATTR_NESTING), I'm really not convinced that it's beneficial to bloat the generic iommu_ops structure with private driver-specific interfaces. The attribute interface is a great compromise for these kinds of things, and you can easily add type-checked wrappers around it for external callers (maybe even make the actual attributes internal between the IOMMU core and drivers) if that's your concern. Robin. > --- > drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- > drivers/iommu/arm/arm-smmu/arm-smmu.c | 40 +++++++------------------ > drivers/iommu/iommu.c | 9 ++++++ > include/linux/iommu.h | 9 +++++- > 4 files changed, 29 insertions(+), 31 deletions(-) > > diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c > index 0f184c3dd9d9ec..78d98ab2ee3a68 100644 > --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c > +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c > @@ -191,7 +191,7 @@ void adreno_set_llc_attributes(struct iommu_domain *iommu) > struct io_pgtable_domain_attr pgtbl_cfg; > > pgtbl_cfg.quirks = IO_PGTABLE_QUIRK_ARM_OUTER_WBWA; > - iommu_domain_set_attr(iommu, DOMAIN_ATTR_IO_PGTABLE_CFG, &pgtbl_cfg); > + iommu_domain_set_pgtable_attr(iommu, &pgtbl_cfg); > } > > struct msm_gem_address_space * > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c > index 2e17d990d04481..2858999c86dfd1 100644 > --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c > @@ -1515,40 +1515,22 @@ static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) > return ret; > } > > -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, > - enum iommu_attr attr, void *data) > +static int arm_smmu_domain_set_pgtable_attr(struct iommu_domain *domain, > + struct io_pgtable_domain_attr *pgtbl_cfg) > { > - int ret = 0; > struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); > + int ret = -EPERM; > > - mutex_lock(&smmu_domain->init_mutex); > - > - switch(domain->type) { > - case IOMMU_DOMAIN_UNMANAGED: > - switch (attr) { > - case DOMAIN_ATTR_IO_PGTABLE_CFG: { > - struct io_pgtable_domain_attr *pgtbl_cfg = data; > - > - if (smmu_domain->smmu) { > - ret = -EPERM; > - goto out_unlock; > - } > + if (domain->type != IOMMU_DOMAIN_UNMANAGED) > + return -EINVAL; > > - smmu_domain->pgtbl_cfg = *pgtbl_cfg; > - break; > - } > - default: > - ret = -ENODEV; > - } > - break; > - case IOMMU_DOMAIN_DMA: > - ret = -ENODEV; > - break; > - default: > - ret = -EINVAL; > + mutex_lock(&smmu_domain->init_mutex); > + if (!smmu_domain->smmu) { > + smmu_domain->pgtbl_cfg = *pgtbl_cfg; > + ret = 0; > } > -out_unlock: > mutex_unlock(&smmu_domain->init_mutex); > + > return ret; > } > > @@ -1609,7 +1591,7 @@ static struct iommu_ops arm_smmu_ops = { > .device_group = arm_smmu_device_group, > .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, > .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, > - .domain_set_attr = arm_smmu_domain_set_attr, > + .domain_set_pgtable_attr = arm_smmu_domain_set_pgtable_attr, > .domain_enable_nesting = arm_smmu_domain_enable_nesting, > .of_xlate = arm_smmu_of_xlate, > .get_resv_regions = arm_smmu_get_resv_regions, > diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c > index 2e9e058501a953..8490aefd4b41f8 100644 > --- a/drivers/iommu/iommu.c > +++ b/drivers/iommu/iommu.c > @@ -2693,6 +2693,15 @@ int iommu_domain_enable_nesting(struct iommu_domain *domain) > } > EXPORT_SYMBOL_GPL(iommu_domain_enable_nesting); > > +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, > + struct io_pgtable_domain_attr *pgtbl_cfg) > +{ > + if (!domain->ops->domain_set_pgtable_attr) > + return -EINVAL; > + return domain->ops->domain_set_pgtable_attr(domain, pgtbl_cfg); > +} > +EXPORT_SYMBOL_GPL(iommu_domain_set_pgtable_attr); > + > void iommu_get_resv_regions(struct device *dev, struct list_head *list) > { > const struct iommu_ops *ops = dev->bus->iommu_ops; > diff --git a/include/linux/iommu.h b/include/linux/iommu.h > index aed88aa3bd3edf..39d3ed4d2700ac 100644 > --- a/include/linux/iommu.h > +++ b/include/linux/iommu.h > @@ -40,6 +40,7 @@ struct iommu_domain; > struct notifier_block; > struct iommu_sva; > struct iommu_fault_event; > +struct io_pgtable_domain_attr; > > /* iommu fault flags */ > #define IOMMU_FAULT_READ 0x0 > @@ -107,7 +108,6 @@ enum iommu_cap { > */ > > enum iommu_attr { > - DOMAIN_ATTR_IO_PGTABLE_CFG, > DOMAIN_ATTR_MAX, > }; > > @@ -196,6 +196,7 @@ struct iommu_iotlb_gather { > * @dma_enable_flush_queue: Try to enable the DMA flush queue > * @domain_set_attr: Change domain attributes > * @domain_enable_nesting: Enable nesting > + * @domain_set_pgtable_attr: Set io page table attributes > * @get_resv_regions: Request list of reserved regions for a device > * @put_resv_regions: Free list of reserved regions for a device > * @apply_resv_region: Temporary helper call-back for iova reserved ranges > @@ -249,6 +250,8 @@ struct iommu_ops { > int (*domain_set_attr)(struct iommu_domain *domain, > enum iommu_attr attr, void *data); > int (*domain_enable_nesting)(struct iommu_domain *domain); > + int (*domain_set_pgtable_attr)(struct iommu_domain *domain, > + struct io_pgtable_domain_attr *pgtbl_cfg); > > /* Request/Free a list of reserved regions for a device */ > void (*get_resv_regions)(struct device *dev, struct list_head *list); > @@ -493,9 +496,13 @@ extern int iommu_group_id(struct iommu_group *group); > extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); > > bool iommu_dma_use_flush_queue(struct iommu_domain *domain); > +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, > + struct io_pgtable_domain_attr *pgtbl_cfg); > extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, > void *data); > int iommu_domain_enable_nesting(struct iommu_domain *domain); > +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, > + struct io_pgtable_domain_attr *pgtbl_cfg); > > extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, > unsigned long iova, int flags); >
On Thu, Mar 4, 2021 at 7:48 AM Robin Murphy <robin.murphy@arm.com> wrote: > > On 2021-03-01 08:42, Christoph Hellwig wrote: > > Signed-off-by: Christoph Hellwig <hch@lst.de> > > Moreso than the previous patch, where the feature is at least relatively > generic (note that there's a bunch of in-flight development around > DOMAIN_ATTR_NESTING), I'm really not convinced that it's beneficial to > bloat the generic iommu_ops structure with private driver-specific > interfaces. The attribute interface is a great compromise for these > kinds of things, and you can easily add type-checked wrappers around it > for external callers (maybe even make the actual attributes internal > between the IOMMU core and drivers) if that's your concern. I suppose if this is *just* for the GPU we could move it into adreno_smmu_priv.. But one thing I'm not sure about is whether IO_PGTABLE_QUIRK_ARM_OUTER_WBWA is something that other devices *should* be using as well, but just haven't gotten around to yet. BR, -R > Robin. > > > --- > > drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- > > drivers/iommu/arm/arm-smmu/arm-smmu.c | 40 +++++++------------------ > > drivers/iommu/iommu.c | 9 ++++++ > > include/linux/iommu.h | 9 +++++- > > 4 files changed, 29 insertions(+), 31 deletions(-) > > > > diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c > > index 0f184c3dd9d9ec..78d98ab2ee3a68 100644 > > --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c > > +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c > > @@ -191,7 +191,7 @@ void adreno_set_llc_attributes(struct iommu_domain *iommu) > > struct io_pgtable_domain_attr pgtbl_cfg; > > > > pgtbl_cfg.quirks = IO_PGTABLE_QUIRK_ARM_OUTER_WBWA; > > - iommu_domain_set_attr(iommu, DOMAIN_ATTR_IO_PGTABLE_CFG, &pgtbl_cfg); > > + iommu_domain_set_pgtable_attr(iommu, &pgtbl_cfg); > > } > > > > struct msm_gem_address_space * > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c > > index 2e17d990d04481..2858999c86dfd1 100644 > > --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c > > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c > > @@ -1515,40 +1515,22 @@ static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) > > return ret; > > } > > > > -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, > > - enum iommu_attr attr, void *data) > > +static int arm_smmu_domain_set_pgtable_attr(struct iommu_domain *domain, > > + struct io_pgtable_domain_attr *pgtbl_cfg) > > { > > - int ret = 0; > > struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); > > + int ret = -EPERM; > > > > - mutex_lock(&smmu_domain->init_mutex); > > - > > - switch(domain->type) { > > - case IOMMU_DOMAIN_UNMANAGED: > > - switch (attr) { > > - case DOMAIN_ATTR_IO_PGTABLE_CFG: { > > - struct io_pgtable_domain_attr *pgtbl_cfg = data; > > - > > - if (smmu_domain->smmu) { > > - ret = -EPERM; > > - goto out_unlock; > > - } > > + if (domain->type != IOMMU_DOMAIN_UNMANAGED) > > + return -EINVAL; > > > > - smmu_domain->pgtbl_cfg = *pgtbl_cfg; > > - break; > > - } > > - default: > > - ret = -ENODEV; > > - } > > - break; > > - case IOMMU_DOMAIN_DMA: > > - ret = -ENODEV; > > - break; > > - default: > > - ret = -EINVAL; > > + mutex_lock(&smmu_domain->init_mutex); > > + if (!smmu_domain->smmu) { > > + smmu_domain->pgtbl_cfg = *pgtbl_cfg; > > + ret = 0; > > } > > -out_unlock: > > mutex_unlock(&smmu_domain->init_mutex); > > + > > return ret; > > } > > > > @@ -1609,7 +1591,7 @@ static struct iommu_ops arm_smmu_ops = { > > .device_group = arm_smmu_device_group, > > .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, > > .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, > > - .domain_set_attr = arm_smmu_domain_set_attr, > > + .domain_set_pgtable_attr = arm_smmu_domain_set_pgtable_attr, > > .domain_enable_nesting = arm_smmu_domain_enable_nesting, > > .of_xlate = arm_smmu_of_xlate, > > .get_resv_regions = arm_smmu_get_resv_regions, > > diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c > > index 2e9e058501a953..8490aefd4b41f8 100644 > > --- a/drivers/iommu/iommu.c > > +++ b/drivers/iommu/iommu.c > > @@ -2693,6 +2693,15 @@ int iommu_domain_enable_nesting(struct iommu_domain *domain) > > } > > EXPORT_SYMBOL_GPL(iommu_domain_enable_nesting); > > > > +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, > > + struct io_pgtable_domain_attr *pgtbl_cfg) > > +{ > > + if (!domain->ops->domain_set_pgtable_attr) > > + return -EINVAL; > > + return domain->ops->domain_set_pgtable_attr(domain, pgtbl_cfg); > > +} > > +EXPORT_SYMBOL_GPL(iommu_domain_set_pgtable_attr); > > + > > void iommu_get_resv_regions(struct device *dev, struct list_head *list) > > { > > const struct iommu_ops *ops = dev->bus->iommu_ops; > > diff --git a/include/linux/iommu.h b/include/linux/iommu.h > > index aed88aa3bd3edf..39d3ed4d2700ac 100644 > > --- a/include/linux/iommu.h > > +++ b/include/linux/iommu.h > > @@ -40,6 +40,7 @@ struct iommu_domain; > > struct notifier_block; > > struct iommu_sva; > > struct iommu_fault_event; > > +struct io_pgtable_domain_attr; > > > > /* iommu fault flags */ > > #define IOMMU_FAULT_READ 0x0 > > @@ -107,7 +108,6 @@ enum iommu_cap { > > */ > > > > enum iommu_attr { > > - DOMAIN_ATTR_IO_PGTABLE_CFG, > > DOMAIN_ATTR_MAX, > > }; > > > > @@ -196,6 +196,7 @@ struct iommu_iotlb_gather { > > * @dma_enable_flush_queue: Try to enable the DMA flush queue > > * @domain_set_attr: Change domain attributes > > * @domain_enable_nesting: Enable nesting > > + * @domain_set_pgtable_attr: Set io page table attributes > > * @get_resv_regions: Request list of reserved regions for a device > > * @put_resv_regions: Free list of reserved regions for a device > > * @apply_resv_region: Temporary helper call-back for iova reserved ranges > > @@ -249,6 +250,8 @@ struct iommu_ops { > > int (*domain_set_attr)(struct iommu_domain *domain, > > enum iommu_attr attr, void *data); > > int (*domain_enable_nesting)(struct iommu_domain *domain); > > + int (*domain_set_pgtable_attr)(struct iommu_domain *domain, > > + struct io_pgtable_domain_attr *pgtbl_cfg); > > > > /* Request/Free a list of reserved regions for a device */ > > void (*get_resv_regions)(struct device *dev, struct list_head *list); > > @@ -493,9 +496,13 @@ extern int iommu_group_id(struct iommu_group *group); > > extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); > > > > bool iommu_dma_use_flush_queue(struct iommu_domain *domain); > > +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, > > + struct io_pgtable_domain_attr *pgtbl_cfg); > > extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, > > void *data); > > int iommu_domain_enable_nesting(struct iommu_domain *domain); > > +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, > > + struct io_pgtable_domain_attr *pgtbl_cfg); > > > > extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, > > unsigned long iova, int flags); > > > _______________________________________________ > Freedreno mailing list > Freedreno@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/freedreno
On Thu, Mar 04, 2021 at 03:11:08PM -0800, Rob Clark wrote: > On Thu, Mar 4, 2021 at 7:48 AM Robin Murphy <robin.murphy@arm.com> wrote: > > > > On 2021-03-01 08:42, Christoph Hellwig wrote: > > > Signed-off-by: Christoph Hellwig <hch@lst.de> > > > > Moreso than the previous patch, where the feature is at least relatively > > generic (note that there's a bunch of in-flight development around > > DOMAIN_ATTR_NESTING), I'm really not convinced that it's beneficial to > > bloat the generic iommu_ops structure with private driver-specific > > interfaces. The attribute interface is a great compromise for these > > kinds of things, and you can easily add type-checked wrappers around it > > for external callers (maybe even make the actual attributes internal > > between the IOMMU core and drivers) if that's your concern. > > I suppose if this is *just* for the GPU we could move it into adreno_smmu_priv.. > > But one thing I'm not sure about is whether > IO_PGTABLE_QUIRK_ARM_OUTER_WBWA is something that other devices > *should* be using as well, but just haven't gotten around to yet. The intention is certainly that this would be a place to collate per-domain pgtable quirks, so I'd prefer not to tie that to the GPU. Will
On Fri, Mar 05, 2021 at 10:00:12AM +0000, Will Deacon wrote: > > But one thing I'm not sure about is whether > > IO_PGTABLE_QUIRK_ARM_OUTER_WBWA is something that other devices > > *should* be using as well, but just haven't gotten around to yet. > > The intention is certainly that this would be a place to collate per-domain > pgtable quirks, so I'd prefer not to tie that to the GPU. So the overall consensus is to just keep this as-is for now?
On Wed, Mar 10, 2021 at 09:58:06AM +0100, Christoph Hellwig wrote: > On Fri, Mar 05, 2021 at 10:00:12AM +0000, Will Deacon wrote: > > > But one thing I'm not sure about is whether > > > IO_PGTABLE_QUIRK_ARM_OUTER_WBWA is something that other devices > > > *should* be using as well, but just haven't gotten around to yet. > > > > The intention is certainly that this would be a place to collate per-domain > > pgtable quirks, so I'd prefer not to tie that to the GPU. > > So the overall consensus is to just keep this as-is for now? Yes, please. If it doesn't see wider adoption then we can revisit it. Will
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 0f184c3dd9d9ec..78d98ab2ee3a68 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -191,7 +191,7 @@ void adreno_set_llc_attributes(struct iommu_domain *iommu) struct io_pgtable_domain_attr pgtbl_cfg; pgtbl_cfg.quirks = IO_PGTABLE_QUIRK_ARM_OUTER_WBWA; - iommu_domain_set_attr(iommu, DOMAIN_ATTR_IO_PGTABLE_CFG, &pgtbl_cfg); + iommu_domain_set_pgtable_attr(iommu, &pgtbl_cfg); } struct msm_gem_address_space * diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 2e17d990d04481..2858999c86dfd1 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1515,40 +1515,22 @@ static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) return ret; } -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +static int arm_smmu_domain_set_pgtable_attr(struct iommu_domain *domain, + struct io_pgtable_domain_attr *pgtbl_cfg) { - int ret = 0; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; - mutex_lock(&smmu_domain->init_mutex); - - switch(domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_IO_PGTABLE_CFG: { - struct io_pgtable_domain_attr *pgtbl_cfg = data; - - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; - smmu_domain->pgtbl_cfg = *pgtbl_cfg; - break; - } - default: - ret = -ENODEV; - } - break; - case IOMMU_DOMAIN_DMA: - ret = -ENODEV; - break; - default: - ret = -EINVAL; + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->pgtbl_cfg = *pgtbl_cfg; + ret = 0; } -out_unlock: mutex_unlock(&smmu_domain->init_mutex); + return ret; } @@ -1609,7 +1591,7 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, - .domain_set_attr = arm_smmu_domain_set_attr, + .domain_set_pgtable_attr = arm_smmu_domain_set_pgtable_attr, .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 2e9e058501a953..8490aefd4b41f8 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2693,6 +2693,15 @@ int iommu_domain_enable_nesting(struct iommu_domain *domain) } EXPORT_SYMBOL_GPL(iommu_domain_enable_nesting); +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, + struct io_pgtable_domain_attr *pgtbl_cfg) +{ + if (!domain->ops->domain_set_pgtable_attr) + return -EINVAL; + return domain->ops->domain_set_pgtable_attr(domain, pgtbl_cfg); +} +EXPORT_SYMBOL_GPL(iommu_domain_set_pgtable_attr); + void iommu_get_resv_regions(struct device *dev, struct list_head *list) { const struct iommu_ops *ops = dev->bus->iommu_ops; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index aed88aa3bd3edf..39d3ed4d2700ac 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -40,6 +40,7 @@ struct iommu_domain; struct notifier_block; struct iommu_sva; struct iommu_fault_event; +struct io_pgtable_domain_attr; /* iommu fault flags */ #define IOMMU_FAULT_READ 0x0 @@ -107,7 +108,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, }; @@ -196,6 +196,7 @@ struct iommu_iotlb_gather { * @dma_enable_flush_queue: Try to enable the DMA flush queue * @domain_set_attr: Change domain attributes * @domain_enable_nesting: Enable nesting + * @domain_set_pgtable_attr: Set io page table attributes * @get_resv_regions: Request list of reserved regions for a device * @put_resv_regions: Free list of reserved regions for a device * @apply_resv_region: Temporary helper call-back for iova reserved ranges @@ -249,6 +250,8 @@ struct iommu_ops { int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); int (*domain_enable_nesting)(struct iommu_domain *domain); + int (*domain_set_pgtable_attr)(struct iommu_domain *domain, + struct io_pgtable_domain_attr *pgtbl_cfg); /* Request/Free a list of reserved regions for a device */ void (*get_resv_regions)(struct device *dev, struct list_head *list); @@ -493,9 +496,13 @@ extern int iommu_group_id(struct iommu_group *group); extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); bool iommu_dma_use_flush_queue(struct iommu_domain *domain); +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, + struct io_pgtable_domain_attr *pgtbl_cfg); extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); int iommu_domain_enable_nesting(struct iommu_domain *domain); +int iommu_domain_set_pgtable_attr(struct iommu_domain *domain, + struct io_pgtable_domain_attr *pgtbl_cfg); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags);
Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- drivers/iommu/arm/arm-smmu/arm-smmu.c | 40 +++++++------------------ drivers/iommu/iommu.c | 9 ++++++ include/linux/iommu.h | 9 +++++- 4 files changed, 29 insertions(+), 31 deletions(-)