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12d04eef92
This patch completely refactors DMA operations for 64 bits powerpc. 32 bits is untouched for now. We use the new dev_archdata structure to add the dma operations pointer and associated data to struct device. While at it, we also add the OF node pointer and numa node. In the future, we might want to look into merging that with pci_dn as well. The old vio, pci-iommu and pci-direct DMA ops are gone. They are now replaced by a set of generic iommu and direct DMA ops (non PCI specific) that can be used by bus types. The toplevel implementation is now inline. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/*
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* IBM PowerPC Virtual I/O Infrastructure Support.
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*
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* Copyright (c) 2003 IBM Corp.
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* Dave Engebretsen engebret@us.ibm.com
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* Santiago Leon santil@us.ibm.com
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_VIO_H
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#define _ASM_POWERPC_VIO_H
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#ifdef __KERNEL__
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/device.h>
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#include <linux/dma-mapping.h>
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#include <linux/mod_devicetable.h>
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#include <asm/hvcall.h>
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#include <asm/scatterlist.h>
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/*
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* Architecture-specific constants for drivers to
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* extract attributes of the device using vio_get_attribute()
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*/
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#define VETH_MAC_ADDR "local-mac-address"
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#define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters"
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/* End architecture-specific constants */
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#define h_vio_signal(ua, mode) \
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plpar_hcall_norets(H_VIO_SIGNAL, ua, mode)
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#define VIO_IRQ_DISABLE 0UL
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#define VIO_IRQ_ENABLE 1UL
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struct iommu_table;
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/*
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* The vio_dev structure is used to describe virtual I/O devices.
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*/
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struct vio_dev {
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const char *name;
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const char *type;
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uint32_t unit_address;
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unsigned int irq;
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struct device dev;
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};
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struct vio_driver {
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struct list_head node;
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const struct vio_device_id *id_table;
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int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
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int (*remove)(struct vio_dev *dev);
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void (*shutdown)(struct vio_dev *dev);
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unsigned long driver_data;
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struct device_driver driver;
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};
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extern struct dma_mapping_ops vio_dma_ops;
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extern struct bus_type vio_bus_type;
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extern int vio_register_driver(struct vio_driver *drv);
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extern void vio_unregister_driver(struct vio_driver *drv);
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extern void __devinit vio_unregister_device(struct vio_dev *dev);
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struct device_node;
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extern struct vio_dev * __devinit vio_register_device_node(
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struct device_node *node_vdev);
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extern const void *vio_get_attribute(struct vio_dev *vdev, char *which,
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int *length);
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#ifdef CONFIG_PPC_PSERIES
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extern struct vio_dev *vio_find_node(struct device_node *vnode);
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extern int vio_enable_interrupts(struct vio_dev *dev);
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extern int vio_disable_interrupts(struct vio_dev *dev);
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#endif
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static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
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{
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return container_of(drv, struct vio_driver, driver);
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}
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static inline struct vio_dev *to_vio_dev(struct device *dev)
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{
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return container_of(dev, struct vio_dev, dev);
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}
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_VIO_H */
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