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IOMMU Updates for Linux 3.5

Browse source 
Not much stuff this time. The only change to the IOMMU core code is the
 addition of a handle to the fault handling code. A few updates to the
 AMD IOMMU driver to work around new errata. The other patches are mostly
 fixes and enhancements to the existing ARM IOMMU drivers and
 documentation updates.
 
 A new IOMMU driver for the Exynos platform was also underway but got
 merged via the Samsung tree and is not part of this tree.
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Merge tag 'iommu-updates-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:
 "Not much stuff this time.  The only change to the IOMMU core code is
  the addition of a handle to the fault handling code.  A few updates to
  the AMD IOMMU driver to work around new errata.  The other patches are
  mostly fixes and enhancements to the existing ARM IOMMU drivers and
  documentation updates.

  A new IOMMU driver for the Exynos platform was also underway but got
  merged via the Samsung tree and is not part of this tree."

* tag 'iommu-updates-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  Documentation: kernel-parameters.txt Add amd_iommu_dump
  iommu/core: pass a user-provided token to fault handlers
  iommu/tegra: gart: Fix register offset correctly
  iommu: OMAP: device detach on domain destroy
  iommu: tegra/gart: Add device tree support
  iommu: tegra/gart: use correct gart_device
  iommu/tegra: smmu: Print device name correctly
  iommu/amd: Add workaround for event log erratum
  iommu/amd: Check for the right TLP prefix bit
  dma-debug: release free_entries_lock before saving stack trace
This commit is contained in:
Linus Torvalds 2012-05-30 08:49:28 -07:00
commit 2f83766d4b
10 changed files with 104 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

10
include/linux/iommu.h
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@ -35,12 +35,13 @@ struct iommu_domain;
#define IOMMU_FAULT_WRITE 0x1
typedef int (*iommu_fault_handler_t)(struct iommu_domain *,
struct device *, unsigned long, int);
struct device *, unsigned long, int, void *);
struct iommu_domain {
struct iommu_ops *ops;
void *priv;
iommu_fault_handler_t handler;
void *handler_token;
};
#define IOMMU_CAP_CACHE_COHERENCY 0x1
@ -95,7 +96,7 @@ extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
extern int iommu_domain_has_cap(struct iommu_domain *domain,
unsigned long cap);
extern void iommu_set_fault_handler(struct iommu_domain *domain,
iommu_fault_handler_t handler);
iommu_fault_handler_t handler, void *token);
extern int iommu_device_group(struct device *dev, unsigned int *groupid);
/**
@ -132,7 +133,8 @@ static inline int report_iommu_fault(struct iommu_domain *domain,
* invoke it.
*/
if (domain->handler)
ret = domain->handler(domain, dev, iova, flags);
ret = domain->handler(domain, dev, iova, flags,
domain->handler_token);
return ret;
}
@ -191,7 +193,7 @@ static inline int domain_has_cap(struct iommu_domain *domain,
}
static inline void iommu_set_fault_handler(struct iommu_domain *domain,
iommu_fault_handler_t handler)
iommu_fault_handler_t handler, void *token)
{
}