diff options
Diffstat (limited to 'arch/powerpc/kernel/vio.c')
| -rw-r--r-- | arch/powerpc/kernel/vio.c | 48 |
1 files changed, 29 insertions, 19 deletions
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index cb87301ccd55..02b32216bbc3 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -37,8 +37,6 @@ #include <asm/page.h> #include <asm/hvcall.h> -static struct bus_type vio_bus_type; - static struct vio_dev vio_bus_device = { /* fake "parent" device */ .name = "vio", .type = "", @@ -613,6 +611,7 @@ static u64 vio_dma_get_required_mask(struct device *dev) struct dma_map_ops vio_dma_mapping_ops = { .alloc = vio_dma_iommu_alloc_coherent, .free = vio_dma_iommu_free_coherent, + .mmap = dma_direct_mmap_coherent, .map_sg = vio_dma_iommu_map_sg, .unmap_sg = vio_dma_iommu_unmap_sg, .map_page = vio_dma_iommu_map_page, @@ -625,7 +624,7 @@ struct dma_map_ops vio_dma_mapping_ops = { * vio_cmo_set_dev_desired - Set desired entitlement for a device * * @viodev: struct vio_dev for device to alter - * @new_desired: new desired entitlement level in bytes + * @desired: new desired entitlement level in bytes * * For use by devices to request a change to their entitlement at runtime or * through sysfs. The desired entitlement level is changed and a balancing @@ -1262,7 +1261,7 @@ static int vio_bus_remove(struct device *dev) /** * vio_register_driver: - Register a new vio driver - * @drv: The vio_driver structure to be registered. + * @viodrv: The vio_driver structure to be registered. */ int __vio_register_driver(struct vio_driver *viodrv, struct module *owner, const char *mod_name) @@ -1282,7 +1281,7 @@ EXPORT_SYMBOL(__vio_register_driver); /** * vio_unregister_driver - Remove registration of vio driver. - * @driver: The vio_driver struct to be removed form registration + * @viodrv: The vio_driver struct to be removed form registration */ void vio_unregister_driver(struct vio_driver *viodrv) { @@ -1296,8 +1295,7 @@ static void __devinit vio_dev_release(struct device *dev) struct iommu_table *tbl = get_iommu_table_base(dev); if (tbl) - iommu_free_table(tbl, dev->of_node ? - dev->of_node->full_name : dev_name(dev)); + iommu_free_table(tbl, of_node_full_name(dev->of_node)); of_node_put(dev->of_node); kfree(to_vio_dev(dev)); } @@ -1397,21 +1395,27 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node) viodev->name = of_node->name; viodev->dev.of_node = of_node_get(of_node); - if (firmware_has_feature(FW_FEATURE_CMO)) - vio_cmo_set_dma_ops(viodev); - else - set_dma_ops(&viodev->dev, &dma_iommu_ops); - set_iommu_table_base(&viodev->dev, vio_build_iommu_table(viodev)); set_dev_node(&viodev->dev, of_node_to_nid(of_node)); /* init generic 'struct device' fields: */ viodev->dev.parent = &vio_bus_device.dev; viodev->dev.bus = &vio_bus_type; viodev->dev.release = vio_dev_release; - /* needed to ensure proper operation of coherent allocations - * later, in case driver doesn't set it explicitly */ - dma_set_mask(&viodev->dev, DMA_BIT_MASK(64)); - dma_set_coherent_mask(&viodev->dev, DMA_BIT_MASK(64)); + + if (of_get_property(viodev->dev.of_node, "ibm,my-dma-window", NULL)) { + if (firmware_has_feature(FW_FEATURE_CMO)) + vio_cmo_set_dma_ops(viodev); + else + set_dma_ops(&viodev->dev, &dma_iommu_ops); + + set_iommu_table_base(&viodev->dev, + vio_build_iommu_table(viodev)); + + /* needed to ensure proper operation of coherent allocations + * later, in case driver doesn't set it explicitly */ + dma_set_mask(&viodev->dev, DMA_BIT_MASK(64)); + dma_set_coherent_mask(&viodev->dev, DMA_BIT_MASK(64)); + } /* register with generic device framework */ if (device_register(&viodev->dev)) { @@ -1491,12 +1495,18 @@ static int __init vio_bus_init(void) if (firmware_has_feature(FW_FEATURE_CMO)) vio_cmo_bus_init(); + return 0; +} +postcore_initcall(vio_bus_init); + +static int __init vio_device_init(void) +{ vio_bus_scan_register_devices("vdevice"); vio_bus_scan_register_devices("ibm,platform-facilities"); return 0; } -__initcall(vio_bus_init); +device_initcall(vio_device_init); static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -1509,7 +1519,7 @@ static ssize_t devspec_show(struct device *dev, { struct device_node *of_node = dev->of_node; - return sprintf(buf, "%s\n", of_node ? of_node->full_name : "none"); + return sprintf(buf, "%s\n", of_node_full_name(of_node)); } static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, @@ -1568,7 +1578,7 @@ static int vio_hotplug(struct device *dev, struct kobj_uevent_env *env) return 0; } -static struct bus_type vio_bus_type = { +struct bus_type vio_bus_type = { .name = "vio", .dev_attrs = vio_dev_attrs, .uevent = vio_hotplug, |