diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 44 |
1 files changed, 11 insertions, 33 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 2023a77015a0..b6e26dba2dec 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -41,6 +41,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_device.h> #include <linux/pci.h> #include <linux/platform_device.h> #include <linux/slab.h> @@ -370,8 +371,6 @@ struct arm_smmu_device { u32 num_context_irqs; unsigned int *irqs; - struct list_head list; - u32 cavium_id_base; /* Specific to Cavium */ }; @@ -409,9 +408,6 @@ struct arm_smmu_domain { struct iommu_domain domain; }; -static DEFINE_SPINLOCK(arm_smmu_devices_lock); -static LIST_HEAD(arm_smmu_devices); - struct arm_smmu_option_prop { u32 opt; const char *prop; @@ -478,6 +474,8 @@ static int __find_legacy_master_phandle(struct device *dev, void *data) return err == -ENOENT ? 0 : err; } +static struct platform_driver arm_smmu_driver; + static int arm_smmu_register_legacy_master(struct device *dev) { struct arm_smmu_device *smmu; @@ -495,19 +493,16 @@ static int arm_smmu_register_legacy_master(struct device *dev) } it.node = np; - spin_lock(&arm_smmu_devices_lock); - list_for_each_entry(smmu, &arm_smmu_devices, list) { - err = __find_legacy_master_phandle(smmu->dev, &data); - if (err) - break; - } - spin_unlock(&arm_smmu_devices_lock); + err = driver_for_each_device(&arm_smmu_driver.driver, NULL, &data, + __find_legacy_master_phandle); of_node_put(np); if (err == 0) return -ENODEV; if (err < 0) return err; + smmu = dev_get_drvdata(data); + if (it.cur_count > MAX_MASTER_STREAMIDS) { dev_err(smmu->dev, "reached maximum number (%d) of stream IDs for master device %s\n", @@ -1816,7 +1811,6 @@ MODULE_DEVICE_TABLE(of, arm_smmu_of_match); static int arm_smmu_device_dt_probe(struct platform_device *pdev) { - const struct of_device_id *of_id; const struct arm_smmu_match_data *data; struct resource *res; struct arm_smmu_device *smmu; @@ -1830,8 +1824,7 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev) } smmu->dev = dev; - of_id = of_match_node(arm_smmu_of_match, dev->of_node); - data = of_id->data; + data = of_device_get_match_data(dev); smmu->version = data->version; smmu->model = data->model; @@ -1904,35 +1897,20 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev) } } - INIT_LIST_HEAD(&smmu->list); - spin_lock(&arm_smmu_devices_lock); - list_add(&smmu->list, &arm_smmu_devices); - spin_unlock(&arm_smmu_devices_lock); - + platform_set_drvdata(pdev, smmu); arm_smmu_device_reset(smmu); return 0; } static int arm_smmu_device_remove(struct platform_device *pdev) { - struct device *dev = &pdev->dev; - struct arm_smmu_device *curr, *smmu = NULL; - - spin_lock(&arm_smmu_devices_lock); - list_for_each_entry(curr, &arm_smmu_devices, list) { - if (curr->dev == dev) { - smmu = curr; - list_del(&smmu->list); - break; - } - } - spin_unlock(&arm_smmu_devices_lock); + struct arm_smmu_device *smmu = platform_get_drvdata(pdev); if (!smmu) return -ENODEV; if (!bitmap_empty(smmu->context_map, ARM_SMMU_MAX_CBS)) - dev_err(dev, "removing device with active domains!\n"); + dev_err(&pdev->dev, "removing device with active domains!\n"); /* Turn the thing off */ writel(sCR0_CLIENTPD, ARM_SMMU_GR0_NS(smmu) + ARM_SMMU_GR0_sCR0); |