diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-09-06 16:03:26 +0200 |
|---|---|---|
| committer | Hiroshi DOYU <hdoyu@nvidia.com> | 2012-01-23 11:11:35 +0200 |
| commit | 78062e1936961716a272b3c30bf5db231300dffa (patch) | |
| tree | 53b303610e6be1dc90fd7abdad6a05aa4eafd54c | |
| parent | d27fe92f870a09254674a6b6a4f32a7725238248 (diff) | |
iommu/core: Add bus_type parameter to iommu_domain_alloc
This is necessary to store a pointer to the bus-specific
iommu_ops in the iommu-domain structure. It will be used
later to call into bus-specific iommu-ops.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Conflicts:
drivers/iommu/iommu.c
Change-Id: Iddbd561739552b663a4be293f1992314eb0f775a
| -rw-r--r-- | drivers/iommu/iommu.c | 14 | ||||
| -rw-r--r-- | drivers/media/video/omap3isp/isp.c | 2 | ||||
| -rw-r--r-- | include/linux/iommu.h | 6 | ||||
| -rw-r--r-- | virt/kvm/iommu.c | 2 |
4 files changed, 19 insertions, 5 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index d095c33c0e51..ff3e3e7d575e 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -16,6 +16,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include <linux/device.h> #include <linux/kernel.h> #include <linux/bug.h> #include <linux/types.h> @@ -91,15 +92,26 @@ void iommu_set_fault_handler(struct iommu_domain *domain, } EXPORT_SYMBOL_GPL(iommu_set_fault_handler); -struct iommu_domain *iommu_domain_alloc(void) +struct iommu_domain *iommu_domain_alloc(struct bus_type *bus) { struct iommu_domain *domain; + struct iommu_ops *ops; int ret; + if (bus->iommu_ops) + ops = bus->iommu_ops; + else + ops = iommu_ops; + + if (ops == NULL) + return NULL; + domain = kmalloc(sizeof(*domain), GFP_KERNEL); if (!domain) return NULL; + domain->ops = ops; + ret = iommu_ops->domain_init(domain); if (ret) goto out_free; diff --git a/drivers/media/video/omap3isp/isp.c b/drivers/media/video/omap3isp/isp.c index a4baa6165c2c..a7ed98596883 100644 --- a/drivers/media/video/omap3isp/isp.c +++ b/drivers/media/video/omap3isp/isp.c @@ -2141,7 +2141,7 @@ static int isp_probe(struct platform_device *pdev) /* to be removed once iommu migration is complete */ isp->iommu = to_iommu(isp->iommu_dev); - isp->domain = iommu_domain_alloc(); + isp->domain = iommu_domain_alloc(pdev->dev.bus); if (!isp->domain) { dev_err(isp->dev, "can't alloc iommu domain\n"); ret = -ENOMEM; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 68965094027d..048653817af9 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -25,6 +25,7 @@ #define IOMMU_WRITE (2) #define IOMMU_CACHE (4) /* DMA cache coherency */ +struct iommu_ops; struct bus_type; struct device; struct iommu_domain; @@ -37,6 +38,7 @@ typedef int (*iommu_fault_handler_t)(struct iommu_domain *, struct device *, unsigned long, int); struct iommu_domain { + struct iommu_ops *ops; void *priv; iommu_fault_handler_t handler; }; @@ -64,7 +66,7 @@ struct iommu_ops { extern void register_iommu(struct iommu_ops *ops); extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops); extern bool iommu_found(void); -extern struct iommu_domain *iommu_domain_alloc(void); +extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus); extern void iommu_domain_free(struct iommu_domain *domain); extern int iommu_attach_device(struct iommu_domain *domain, struct device *dev); @@ -129,7 +131,7 @@ static inline bool iommu_found(void) return false; } -static inline struct iommu_domain *iommu_domain_alloc(void) +static inline struct iommu_domain *iommu_domain_alloc(struct bus_type *bus) { return NULL; } diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c index 78c80f67f535..20115b1aac6a 100644 --- a/virt/kvm/iommu.c +++ b/virt/kvm/iommu.c @@ -233,7 +233,7 @@ int kvm_iommu_map_guest(struct kvm *kvm) return -ENODEV; } - kvm->arch.iommu_domain = iommu_domain_alloc(); + kvm->arch.iommu_domain = iommu_domain_alloc(&pci_bus_type); if (!kvm->arch.iommu_domain) return -ENOMEM; |