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| author | Alexey Kardashevskiy | 2013-08-28 10:37:43 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt | 2013-10-11 08:24:40 +0200 |
| commit | 8e0a1611cb891e72a9affc4a8ee4795c634896a6 (patch) | |
| tree | 05c7376a7be9a41de27ac60a6b412807c0f09adb /arch/powerpc/platforms/powernv/pci.h | |
| parent | powerpc: Prepare to support kernel handling of IOMMU map/unmap (diff) | |
| download | kernel-qcow2-linux-8e0a1611cb891e72a9affc4a8ee4795c634896a6.tar.gz kernel-qcow2-linux-8e0a1611cb891e72a9affc4a8ee4795c634896a6.tar.xz kernel-qcow2-linux-8e0a1611cb891e72a9affc4a8ee4795c634896a6.zip | |
powerpc: add real mode support for dma operations on powernv
The existing TCE machine calls (tce_build and tce_free) only support
virtual mode as they call __raw_writeq for TCE invalidation what
fails in real mode.
This introduces tce_build_rm and tce_free_rm real mode versions
which do mostly the same but use "Store Doubleword Caching Inhibited
Indexed" instruction for TCE invalidation.
This new feature is going to be utilized by real mode support of VFIO.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.h')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index d633c64e05a1..170dd98629d7 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -52,6 +52,7 @@ struct pnv_ioda_pe { int tce32_seg; int tce32_segcount; struct iommu_table tce32_table; + phys_addr_t tce_inval_reg_phys; /* XXX TODO: Add support for additional 64-bit iommus */ @@ -193,6 +194,6 @@ extern void pnv_pci_init_p5ioc2_hub(struct device_node *np); extern void pnv_pci_init_ioda_hub(struct device_node *np); extern void pnv_pci_init_ioda2_phb(struct device_node *np); extern void pnv_pci_ioda_tce_invalidate(struct iommu_table *tbl, - u64 *startp, u64 *endp); + u64 *startp, u64 *endp, bool rm); #endif /* __POWERNV_PCI_H */ |