diff options
Diffstat (limited to 'drivers/misc/mic/bus/vop_bus.c')
| -rw-r--r-- | drivers/misc/mic/bus/vop_bus.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/drivers/misc/mic/bus/vop_bus.c b/drivers/misc/mic/bus/vop_bus.c deleted file mode 100644 index 6935ddca1bd5..000000000000 --- a/drivers/misc/mic/bus/vop_bus.c +++ /dev/null @@ -1,194 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Intel MIC Platform Software Stack (MPSS) - * - * Copyright(c) 2016 Intel Corporation. - * - * Intel Virtio Over PCIe (VOP) Bus driver. - */ -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/idr.h> -#include <linux/dma-map-ops.h> - -#include "vop_bus.h" - -static ssize_t device_show(struct device *d, - struct device_attribute *attr, char *buf) -{ - struct vop_device *dev = dev_to_vop(d); - - return sprintf(buf, "0x%04x\n", dev->id.device); -} -static DEVICE_ATTR_RO(device); - -static ssize_t vendor_show(struct device *d, - struct device_attribute *attr, char *buf) -{ - struct vop_device *dev = dev_to_vop(d); - - return sprintf(buf, "0x%04x\n", dev->id.vendor); -} -static DEVICE_ATTR_RO(vendor); - -static ssize_t modalias_show(struct device *d, - struct device_attribute *attr, char *buf) -{ - struct vop_device *dev = dev_to_vop(d); - - return sprintf(buf, "vop:d%08Xv%08X\n", - dev->id.device, dev->id.vendor); -} -static DEVICE_ATTR_RO(modalias); - -static struct attribute *vop_dev_attrs[] = { - &dev_attr_device.attr, - &dev_attr_vendor.attr, - &dev_attr_modalias.attr, - NULL, -}; -ATTRIBUTE_GROUPS(vop_dev); - -static inline int vop_id_match(const struct vop_device *dev, - const struct vop_device_id *id) -{ - if (id->device != dev->id.device && id->device != VOP_DEV_ANY_ID) - return 0; - - return id->vendor == VOP_DEV_ANY_ID || id->vendor == dev->id.vendor; -} - -/* - * This looks through all the IDs a driver claims to support. If any of them - * match, we return 1 and the kernel will call vop_dev_probe(). - */ -static int vop_dev_match(struct device *dv, struct device_driver *dr) -{ - unsigned int i; - struct vop_device *dev = dev_to_vop(dv); - const struct vop_device_id *ids; - - ids = drv_to_vop(dr)->id_table; - for (i = 0; ids[i].device; i++) - if (vop_id_match(dev, &ids[i])) - return 1; - return 0; -} - -static int vop_uevent(struct device *dv, struct kobj_uevent_env *env) -{ - struct vop_device *dev = dev_to_vop(dv); - - return add_uevent_var(env, "MODALIAS=vop:d%08Xv%08X", - dev->id.device, dev->id.vendor); -} - -static int vop_dev_probe(struct device *d) -{ - struct vop_device *dev = dev_to_vop(d); - struct vop_driver *drv = drv_to_vop(dev->dev.driver); - - return drv->probe(dev); -} - -static int vop_dev_remove(struct device *d) -{ - struct vop_device *dev = dev_to_vop(d); - struct vop_driver *drv = drv_to_vop(dev->dev.driver); - - drv->remove(dev); - return 0; -} - -static struct bus_type vop_bus = { - .name = "vop_bus", - .match = vop_dev_match, - .dev_groups = vop_dev_groups, - .uevent = vop_uevent, - .probe = vop_dev_probe, - .remove = vop_dev_remove, -}; - -int vop_register_driver(struct vop_driver *driver) -{ - driver->driver.bus = &vop_bus; - return driver_register(&driver->driver); -} -EXPORT_SYMBOL_GPL(vop_register_driver); - -void vop_unregister_driver(struct vop_driver *driver) -{ - driver_unregister(&driver->driver); -} -EXPORT_SYMBOL_GPL(vop_unregister_driver); - -static void vop_release_dev(struct device *d) -{ - struct vop_device *dev = dev_to_vop(d); - - kfree(dev); -} - -struct vop_device * -vop_register_device(struct device *pdev, int id, - const struct dma_map_ops *dma_ops, - struct vop_hw_ops *hw_ops, u8 dnode, struct mic_mw *aper, - struct dma_chan *chan) -{ - int ret; - struct vop_device *vdev; - - vdev = kzalloc(sizeof(*vdev), GFP_KERNEL); - if (!vdev) - return ERR_PTR(-ENOMEM); - - vdev->dev.parent = pdev; - vdev->id.device = id; - vdev->id.vendor = VOP_DEV_ANY_ID; - vdev->dev.dma_ops = dma_ops; - vdev->dev.dma_mask = &vdev->dev.coherent_dma_mask; - dma_set_mask(&vdev->dev, DMA_BIT_MASK(64)); - vdev->dev.release = vop_release_dev; - vdev->hw_ops = hw_ops; - vdev->dev.bus = &vop_bus; - vdev->dnode = dnode; - vdev->aper = aper; - vdev->dma_ch = chan; - vdev->index = dnode - 1; - dev_set_name(&vdev->dev, "vop-dev%u", vdev->index); - /* - * device_register() causes the bus infrastructure to look for a - * matching driver. - */ - ret = device_register(&vdev->dev); - if (ret) - goto free_vdev; - return vdev; -free_vdev: - put_device(&vdev->dev); - return ERR_PTR(ret); -} -EXPORT_SYMBOL_GPL(vop_register_device); - -void vop_unregister_device(struct vop_device *dev) -{ - device_unregister(&dev->dev); -} -EXPORT_SYMBOL_GPL(vop_unregister_device); - -static int __init vop_init(void) -{ - return bus_register(&vop_bus); -} - -static void __exit vop_exit(void) -{ - bus_unregister(&vop_bus); -} - -core_initcall(vop_init); -module_exit(vop_exit); - -MODULE_AUTHOR("Intel Corporation"); -MODULE_DESCRIPTION("Intel(R) VOP Bus driver"); -MODULE_LICENSE("GPL v2"); |