diff options
| author | Hiroshi Doyu <hdoyu@nvidia.com> | 2013-09-02 15:50:51 +0300 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-27 12:51:52 -0700 |
| commit | 7c26a79def7c8e8f0761290dd5e2b468b6dccc98 (patch) | |
| tree | 8d2fde1c793b6b631e66e94b29d06e989330222f /drivers/iommu | |
| parent | 41797576db9434854211956abe9cc56ad79f2a9c (diff) | |
iommu/tegra: smmu: Add debug_dma_platformdata()
For DMA_API_DEBUG to show platform specific data.
Bug 1173494
Change-Id: I421a0bb3675c7bc6906140f7c1ef867f15e80164
Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Reviewed-on: http://git-master/r/269147
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/tegra-smmu.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 9eb4571a9275..a674f6473c17 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -1343,6 +1343,24 @@ static int smmu_iommu_domain_has_cap(struct iommu_domain *domain, return 0; } +#if defined(CONFIG_DMA_API_DEBUG) || defined(CONFIG_FTRACE) +char *debug_dma_platformdata(struct device *dev) +{ + static char buf[21]; + struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev); + struct smmu_as *as; + int asid = -1; + + if (mapping) { + as = mapping->domain->priv; + asid = as->asid; + } + + sprintf(buf, "%d", asid); + return buf; +} +#endif + static int smmu_iommu_attach_dev(struct iommu_domain *domain, struct device *dev) { |