diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/omap-iommu.c | 58 | ||||
| -rw-r--r-- | drivers/iommu/omap-iovmm.c | 31 |
2 files changed, 46 insertions, 43 deletions
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 8f32b2bf7587..b7f863d72c08 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -86,20 +86,24 @@ EXPORT_SYMBOL_GPL(omap_uninstall_iommu_arch); /** * omap_iommu_save_ctx - Save registers for pm off-mode support - * @obj: target iommu + * @dev: client device **/ -void omap_iommu_save_ctx(struct omap_iommu *obj) +void omap_iommu_save_ctx(struct device *dev) { + struct omap_iommu *obj = dev_to_omap_iommu(dev); + arch_iommu->save_ctx(obj); } EXPORT_SYMBOL_GPL(omap_iommu_save_ctx); /** * omap_iommu_restore_ctx - Restore registers for pm off-mode support - * @obj: target iommu + * @dev: client device **/ -void omap_iommu_restore_ctx(struct omap_iommu *obj) +void omap_iommu_restore_ctx(struct device *dev) { + struct omap_iommu *obj = dev_to_omap_iommu(dev); + arch_iommu->restore_ctx(obj); } EXPORT_SYMBOL_GPL(omap_iommu_restore_ctx); @@ -820,35 +824,23 @@ static int device_match_by_alias(struct device *dev, void *data) } /** - * omap_find_iommu_device() - find an omap iommu device by name - * @name: name of the iommu device - * - * The generic iommu API requires the caller to provide the device - * he wishes to attach to a certain iommu domain. - * - * Drivers generally should not bother with this as it should just - * be taken care of by the DMA-API using dev_archdata. - * - * This function is provided as an interim solution until the latter - * materializes, and omap3isp is fully migrated to the DMA-API. - */ -struct device *omap_find_iommu_device(const char *name) -{ - return driver_find_device(&omap_iommu_driver.driver, NULL, - (void *)name, - device_match_by_alias); -} -EXPORT_SYMBOL_GPL(omap_find_iommu_device); - -/** * omap_iommu_attach() - attach iommu device to an iommu domain - * @dev: target omap iommu device + * @name: name of target omap iommu device * @iopgd: page table **/ -static struct omap_iommu *omap_iommu_attach(struct device *dev, u32 *iopgd) +static struct omap_iommu *omap_iommu_attach(const char *name, u32 *iopgd) { int err = -ENOMEM; - struct omap_iommu *obj = to_iommu(dev); + struct device *dev; + struct omap_iommu *obj; + + dev = driver_find_device(&omap_iommu_driver.driver, NULL, + (void *)name, + device_match_by_alias); + if (!dev) + return NULL; + + obj = to_iommu(dev); spin_lock(&obj->iommu_lock); @@ -1069,6 +1061,7 @@ omap_iommu_attach_dev(struct iommu_domain *domain, struct device *dev) { struct omap_iommu_domain *omap_domain = domain->priv; struct omap_iommu *oiommu; + struct omap_iommu_arch_data *arch_data = dev->archdata.iommu; int ret = 0; spin_lock(&omap_domain->lock); @@ -1081,14 +1074,14 @@ omap_iommu_attach_dev(struct iommu_domain *domain, struct device *dev) } /* get a handle to and enable the omap iommu */ - oiommu = omap_iommu_attach(dev, omap_domain->pgtable); + oiommu = omap_iommu_attach(arch_data->name, omap_domain->pgtable); if (IS_ERR(oiommu)) { ret = PTR_ERR(oiommu); dev_err(dev, "can't get omap iommu: %d\n", ret); goto out; } - omap_domain->iommu_dev = oiommu; + omap_domain->iommu_dev = arch_data->iommu_dev = oiommu; oiommu->domain = domain; out: @@ -1100,7 +1093,8 @@ static void omap_iommu_detach_dev(struct iommu_domain *domain, struct device *dev) { struct omap_iommu_domain *omap_domain = domain->priv; - struct omap_iommu *oiommu = to_iommu(dev); + struct omap_iommu_arch_data *arch_data = dev->archdata.iommu; + struct omap_iommu *oiommu = dev_to_omap_iommu(dev); spin_lock(&omap_domain->lock); @@ -1114,7 +1108,7 @@ static void omap_iommu_detach_dev(struct iommu_domain *domain, omap_iommu_detach(oiommu); - omap_domain->iommu_dev = NULL; + omap_domain->iommu_dev = arch_data->iommu_dev = NULL; out: spin_unlock(&omap_domain->lock); diff --git a/drivers/iommu/omap-iovmm.c b/drivers/iommu/omap-iovmm.c index 46be456fcc00..23655945e30c 100644 --- a/drivers/iommu/omap-iovmm.c +++ b/drivers/iommu/omap-iovmm.c @@ -231,12 +231,14 @@ static struct iovm_struct *__find_iovm_area(struct omap_iommu *obj, /** * omap_find_iovm_area - find iovma which includes @da + * @dev: client device * @da: iommu device virtual address * * Find the existing iovma starting at @da */ -struct iovm_struct *omap_find_iovm_area(struct omap_iommu *obj, u32 da) +struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da) { + struct omap_iommu *obj = dev_to_omap_iommu(dev); struct iovm_struct *area; mutex_lock(&obj->mmap_lock); @@ -343,14 +345,15 @@ static void free_iovm_area(struct omap_iommu *obj, struct iovm_struct *area) /** * omap_da_to_va - convert (d) to (v) - * @obj: objective iommu + * @dev: client device * @da: iommu device virtual address * @va: mpu virtual address * * Returns mpu virtual addr which corresponds to a given device virtual addr */ -void *omap_da_to_va(struct omap_iommu *obj, u32 da) +void *omap_da_to_va(struct device *dev, u32 da) { + struct omap_iommu *obj = dev_to_omap_iommu(dev); void *va = NULL; struct iovm_struct *area; @@ -582,16 +585,18 @@ __iommu_vmap(struct iommu_domain *domain, struct omap_iommu *obj, /** * omap_iommu_vmap - (d)-(p)-(v) address mapper - * @obj: objective iommu + * @domain: iommu domain + * @dev: client device * @sgt: address of scatter gather table * @flags: iovma and page property * * Creates 1-n-1 mapping with given @sgt and returns @da. * All @sgt element must be io page size aligned. */ -u32 omap_iommu_vmap(struct iommu_domain *domain, struct omap_iommu *obj, u32 da, +u32 omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da, const struct sg_table *sgt, u32 flags) { + struct omap_iommu *obj = dev_to_omap_iommu(dev); size_t bytes; void *va = NULL; @@ -622,15 +627,17 @@ EXPORT_SYMBOL_GPL(omap_iommu_vmap); /** * omap_iommu_vunmap - release virtual mapping obtained by 'omap_iommu_vmap()' - * @obj: objective iommu + * @domain: iommu domain + * @dev: client device * @da: iommu device virtual address * * Free the iommu virtually contiguous memory area starting at * @da, which was returned by 'omap_iommu_vmap()'. */ struct sg_table * -omap_iommu_vunmap(struct iommu_domain *domain, struct omap_iommu *obj, u32 da) +omap_iommu_vunmap(struct iommu_domain *domain, struct device *dev, u32 da) { + struct omap_iommu *obj = dev_to_omap_iommu(dev); struct sg_table *sgt; /* * 'sgt' is allocated before 'omap_iommu_vmalloc()' is called. @@ -647,7 +654,7 @@ EXPORT_SYMBOL_GPL(omap_iommu_vunmap); /** * omap_iommu_vmalloc - (d)-(p)-(v) address allocator and mapper - * @obj: objective iommu + * @dev: client device * @da: contiguous iommu virtual memory * @bytes: allocation size * @flags: iovma and page property @@ -656,9 +663,10 @@ EXPORT_SYMBOL_GPL(omap_iommu_vunmap); * @da again, which might be adjusted if 'IOVMF_DA_FIXED' is not set. */ u32 -omap_iommu_vmalloc(struct iommu_domain *domain, struct omap_iommu *obj, u32 da, +omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev, u32 da, size_t bytes, u32 flags) { + struct omap_iommu *obj = dev_to_omap_iommu(dev); void *va; struct sg_table *sgt; @@ -698,15 +706,16 @@ EXPORT_SYMBOL_GPL(omap_iommu_vmalloc); /** * omap_iommu_vfree - release memory allocated by 'omap_iommu_vmalloc()' - * @obj: objective iommu + * @dev: client device * @da: iommu device virtual address * * Frees the iommu virtually continuous memory area starting at * @da, as obtained from 'omap_iommu_vmalloc()'. */ -void omap_iommu_vfree(struct iommu_domain *domain, struct omap_iommu *obj, +void omap_iommu_vfree(struct iommu_domain *domain, struct device *dev, const u32 da) { + struct omap_iommu *obj = dev_to_omap_iommu(dev); struct sg_table *sgt; sgt = unmap_vm_area(domain, obj, da, vfree, |