kernel-ark/include/linux/of_device.h
Linus Torvalds 28b47809b2 IOMMU Updates for Linux v4.12
This includes:
 
 	* Some code optimizations for the Intel VT-d driver
 
 	* Code to switch off a previously enabled Intel IOMMU
 
 	* Support for 'struct iommu_device' for OMAP, Rockchip and
 	  Mediatek IOMMUs
 
 	* Some header optimizations for IOMMU core code headers and a
 	  few fixes that became necessary in other parts of the kernel
 	  because of that
 
 	* ACPI/IORT updates and fixes
 
 	* Some Exynos IOMMU optimizations
 
 	* Code updates for the IOMMU dma-api code to bring it closer to
 	  use per-cpu iova caches
 
 	* New command-line option to set default domain type allocated
 	  by the iommu core code
 
 	* Another command line option to allow the Intel IOMMU switched
 	  off in a tboot environment
 
 	* ARM/SMMU: TLB sync optimisations for SMMUv2, Support for using
 	  an IDENTITY domain in conjunction with DMA ops, Support for
 	  SMR masking, Support for 16-bit ASIDs (was previously broken)
 
 	* Various other small fixes and improvements
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Merge tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:

 - code optimizations for the Intel VT-d driver

 - ability to switch off a previously enabled Intel IOMMU

 - support for 'struct iommu_device' for OMAP, Rockchip and Mediatek
   IOMMUs

 - header optimizations for IOMMU core code headers and a few fixes that
   became necessary in other parts of the kernel because of that

 - ACPI/IORT updates and fixes

 - Exynos IOMMU optimizations

 - updates for the IOMMU dma-api code to bring it closer to use per-cpu
   iova caches

 - new command-line option to set default domain type allocated by the
   iommu core code

 - another command line option to allow the Intel IOMMU switched off in
   a tboot environment

 - ARM/SMMU: TLB sync optimisations for SMMUv2, Support for using an
   IDENTITY domain in conjunction with DMA ops, Support for SMR masking,
   Support for 16-bit ASIDs (was previously broken)

 - various other small fixes and improvements

* tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (63 commits)
  soc/qbman: Move dma-mapping.h include to qman_priv.h
  soc/qbman: Fix implicit header dependency now causing build fails
  iommu: Remove trace-events include from iommu.h
  iommu: Remove pci.h include from trace/events/iommu.h
  arm: dma-mapping: Don't override dma_ops in arch_setup_dma_ops()
  ACPI/IORT: Fix CONFIG_IOMMU_API dependency
  iommu/vt-d: Don't print the failure message when booting non-kdump kernel
  iommu: Move report_iommu_fault() to iommu.c
  iommu: Include device.h in iommu.h
  x86, iommu/vt-d: Add an option to disable Intel IOMMU force on
  iommu/arm-smmu: Return IOVA in iova_to_phys when SMMU is bypassed
  iommu/arm-smmu: Correct sid to mask
  iommu/amd: Fix incorrect error handling in amd_iommu_bind_pasid()
  iommu: Make iommu_bus_notifier return NOTIFY_DONE rather than error code
  omap3isp: Remove iommu_group related code
  iommu/omap: Add iommu-group support
  iommu/omap: Make use of 'struct iommu_device'
  iommu/omap: Store iommu_dev pointer in arch_data
  iommu/omap: Move data structures to omap-iommu.h
  iommu/omap: Drop legacy-style device support
  ...
2017-05-09 15:15:47 -07:00

116 lines
3.0 KiB
C

#ifndef _LINUX_OF_DEVICE_H
#define _LINUX_OF_DEVICE_H
#include <linux/cpu.h>
#include <linux/platform_device.h>
#include <linux/of_platform.h> /* temporary until merge */
#include <linux/of.h>
#include <linux/mod_devicetable.h>
struct device;
#ifdef CONFIG_OF
extern const struct of_device_id *of_match_device(
const struct of_device_id *matches, const struct device *dev);
/**
* of_driver_match_device - Tell if a driver's of_match_table matches a device.
* @drv: the device_driver structure to test
* @dev: the device structure to match against
*/
static inline int of_driver_match_device(struct device *dev,
const struct device_driver *drv)
{
return of_match_device(drv->of_match_table, dev) != NULL;
}
extern struct platform_device *of_dev_get(struct platform_device *dev);
extern void of_dev_put(struct platform_device *dev);
extern int of_device_add(struct platform_device *pdev);
extern int of_device_register(struct platform_device *ofdev);
extern void of_device_unregister(struct platform_device *ofdev);
extern const void *of_device_get_match_data(const struct device *dev);
extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
extern int of_device_request_module(struct device *dev);
extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
static inline void of_device_node_put(struct device *dev)
{
of_node_put(dev->of_node);
}
static inline struct device_node *of_cpu_device_node_get(int cpu)
{
struct device *cpu_dev;
cpu_dev = get_cpu_device(cpu);
if (!cpu_dev)
return NULL;
return of_node_get(cpu_dev->of_node);
}
int of_dma_configure(struct device *dev, struct device_node *np);
void of_dma_deconfigure(struct device *dev);
#else /* CONFIG_OF */
static inline int of_driver_match_device(struct device *dev,
const struct device_driver *drv)
{
return 0;
}
static inline void of_device_uevent(struct device *dev,
struct kobj_uevent_env *env) { }
static inline const void *of_device_get_match_data(const struct device *dev)
{
return NULL;
}
static inline int of_device_modalias(struct device *dev,
char *str, ssize_t len)
{
return -ENODEV;
}
static inline int of_device_request_module(struct device *dev)
{
return -ENODEV;
}
static inline int of_device_uevent_modalias(struct device *dev,
struct kobj_uevent_env *env)
{
return -ENODEV;
}
static inline void of_device_node_put(struct device *dev) { }
static inline const struct of_device_id *__of_match_device(
const struct of_device_id *matches, const struct device *dev)
{
return NULL;
}
#define of_match_device(matches, dev) \
__of_match_device(of_match_ptr(matches), (dev))
static inline struct device_node *of_cpu_device_node_get(int cpu)
{
return NULL;
}
static inline int of_dma_configure(struct device *dev, struct device_node *np)
{
return 0;
}
static inline void of_dma_deconfigure(struct device *dev)
{}
#endif /* CONFIG_OF */
#endif /* _LINUX_OF_DEVICE_H */