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Diffstat (limited to 'arch/powerpc/platforms/pseries/vio.c')
-rw-r--r--arch/powerpc/platforms/pseries/vio.c98
1 files changed, 53 insertions, 45 deletions
diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c
index 2dc9cbc4bcd8..18cffac5468f 100644
--- a/arch/powerpc/platforms/pseries/vio.c
+++ b/arch/powerpc/platforms/pseries/vio.c
@@ -512,18 +512,21 @@ static void vio_dma_iommu_free_coherent(struct device *dev, size_t size,
vio_cmo_dealloc(viodev, roundup(size, PAGE_SIZE));
}
-static dma_addr_t vio_dma_iommu_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction direction,
- unsigned long attrs)
+static dma_addr_t vio_dma_iommu_map_phys(struct device *dev, phys_addr_t phys,
+ size_t size,
+ enum dma_data_direction direction,
+ unsigned long attrs)
{
struct vio_dev *viodev = to_vio_dev(dev);
struct iommu_table *tbl = get_iommu_table_base(dev);
dma_addr_t ret = DMA_MAPPING_ERROR;
+ if (unlikely(attrs & DMA_ATTR_MMIO))
+ return ret;
+
if (vio_cmo_alloc(viodev, roundup(size, IOMMU_PAGE_SIZE(tbl))))
goto out_fail;
- ret = iommu_map_page(dev, tbl, page, offset, size, dma_get_mask(dev),
+ ret = iommu_map_phys(dev, tbl, phys, size, dma_get_mask(dev),
direction, attrs);
if (unlikely(ret == DMA_MAPPING_ERROR))
goto out_deallocate;
@@ -536,7 +539,7 @@ out_fail:
return DMA_MAPPING_ERROR;
}
-static void vio_dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
+static void vio_dma_iommu_unmap_phys(struct device *dev, dma_addr_t dma_handle,
size_t size,
enum dma_data_direction direction,
unsigned long attrs)
@@ -544,7 +547,7 @@ static void vio_dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
struct vio_dev *viodev = to_vio_dev(dev);
struct iommu_table *tbl = get_iommu_table_base(dev);
- iommu_unmap_page(tbl, dma_handle, size, direction, attrs);
+ iommu_unmap_phys(tbl, dma_handle, size, direction, attrs);
vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE(tbl)));
}
@@ -605,13 +608,13 @@ static const struct dma_map_ops vio_dma_mapping_ops = {
.free = vio_dma_iommu_free_coherent,
.map_sg = vio_dma_iommu_map_sg,
.unmap_sg = vio_dma_iommu_unmap_sg,
- .map_page = vio_dma_iommu_map_page,
- .unmap_page = vio_dma_iommu_unmap_page,
+ .map_phys = vio_dma_iommu_map_phys,
+ .unmap_phys = vio_dma_iommu_unmap_phys,
.dma_supported = dma_iommu_dma_supported,
.get_required_mask = dma_iommu_get_required_mask,
.mmap = dma_common_mmap,
.get_sgtable = dma_common_get_sgtable,
- .alloc_pages = dma_common_alloc_pages,
+ .alloc_pages_op = dma_common_alloc_pages,
.free_pages = dma_common_free_pages,
};
@@ -991,18 +994,6 @@ static DEVICE_ATTR_RO(cmo_allocated);
static DEVICE_ATTR_RW(cmo_desired);
static DEVICE_ATTR_RW(cmo_allocs_failed);
-static struct attribute *vio_cmo_dev_attrs[] = {
- &dev_attr_name.attr,
- &dev_attr_devspec.attr,
- &dev_attr_modalias.attr,
- &dev_attr_cmo_entitled.attr,
- &dev_attr_cmo_allocated.attr,
- &dev_attr_cmo_desired.attr,
- &dev_attr_cmo_allocs_failed.attr,
- NULL,
-};
-ATTRIBUTE_GROUPS(vio_cmo_dev);
-
/* sysfs bus functions and data structures for CMO */
#define viobus_cmo_rd_attr(name) \
@@ -1062,11 +1053,7 @@ static struct attribute *vio_bus_attrs[] = {
};
ATTRIBUTE_GROUPS(vio_bus);
-static void __init vio_cmo_sysfs_init(void)
-{
- vio_bus_type.dev_groups = vio_cmo_dev_groups;
- vio_bus_type.bus_groups = vio_bus_groups;
-}
+static void __init vio_cmo_sysfs_init(void) { }
#else /* CONFIG_PPC_SMLPAR */
int vio_cmo_entitlement_update(size_t new_entitlement) { return 0; }
void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired) {}
@@ -1584,14 +1571,6 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
}
static DEVICE_ATTR_RO(modalias);
-static struct attribute *vio_dev_attrs[] = {
- &dev_attr_name.attr,
- &dev_attr_devspec.attr,
- &dev_attr_modalias.attr,
- NULL,
-};
-ATTRIBUTE_GROUPS(vio_dev);
-
void vio_unregister_device(struct vio_dev *viodev)
{
device_unregister(&viodev->dev);
@@ -1600,10 +1579,10 @@ void vio_unregister_device(struct vio_dev *viodev)
}
EXPORT_SYMBOL(vio_unregister_device);
-static int vio_bus_match(struct device *dev, struct device_driver *drv)
+static int vio_bus_match(struct device *dev, const struct device_driver *drv)
{
const struct vio_dev *vio_dev = to_vio_dev(dev);
- struct vio_driver *vio_drv = to_vio_driver(drv);
+ const struct vio_driver *vio_drv = to_vio_driver(drv);
const struct vio_device_id *ids = vio_drv->id_table;
return (ids != NULL) && (vio_match_device(ids, vio_dev) != NULL);
@@ -1616,17 +1595,45 @@ static int vio_hotplug(const struct device *dev, struct kobj_uevent_env *env)
const char *cp;
dn = dev->of_node;
- if (!dn)
- return -ENODEV;
- cp = of_get_property(dn, "compatible", NULL);
- if (!cp)
- return -ENODEV;
+ if (dn && (cp = of_get_property(dn, "compatible", NULL)))
+ add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, cp);
- add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, cp);
return 0;
}
-struct bus_type vio_bus_type = {
+#ifdef CONFIG_PPC_SMLPAR
+static struct attribute *vio_cmo_dev_attrs[] = {
+ &dev_attr_name.attr,
+ &dev_attr_devspec.attr,
+ &dev_attr_modalias.attr,
+ &dev_attr_cmo_entitled.attr,
+ &dev_attr_cmo_allocated.attr,
+ &dev_attr_cmo_desired.attr,
+ &dev_attr_cmo_allocs_failed.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(vio_cmo_dev);
+
+const struct bus_type vio_bus_type = {
+ .name = "vio",
+ .dev_groups = vio_cmo_dev_groups,
+ .bus_groups = vio_bus_groups,
+ .uevent = vio_hotplug,
+ .match = vio_bus_match,
+ .probe = vio_bus_probe,
+ .remove = vio_bus_remove,
+ .shutdown = vio_bus_shutdown,
+};
+#else /* CONFIG_PPC_SMLPAR */
+static struct attribute *vio_dev_attrs[] = {
+ &dev_attr_name.attr,
+ &dev_attr_devspec.attr,
+ &dev_attr_modalias.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(vio_dev);
+
+const struct bus_type vio_bus_type = {
.name = "vio",
.dev_groups = vio_dev_groups,
.uevent = vio_hotplug,
@@ -1635,6 +1642,7 @@ struct bus_type vio_bus_type = {
.remove = vio_bus_remove,
.shutdown = vio_bus_shutdown,
};
+#endif /* CONFIG_PPC_SMLPAR */
/**
* vio_get_attribute: - get attribute for virtual device
@@ -1684,7 +1692,7 @@ struct vio_dev *vio_find_node(struct device_node *vnode)
/* construct the kobject name from the device node */
if (of_node_is_type(vnode_parent, "vdevice")) {
const __be32 *prop;
-
+
prop = of_get_property(vnode, "reg", NULL);
if (!prop)
goto out;
generated by cgit (git 2.34.1) at 2025-12-25 15:06:43 +0000