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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2005-11-07 11:06:55 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-06 16:56:47 -0800 |
| commit | 3c726f8dee6f55e96475574e9f645327e461884c (patch) | |
| tree | f67c381e8f57959aa4a94bda4c68e24253cd8171 /include/asm-powerpc/iommu.h | |
| parent | f912696ab330bf539231d1f8032320f2a08b850f (diff) | |
| download | linux-3.10-3c726f8dee6f55e96475574e9f645327e461884c.tar.gz linux-3.10-3c726f8dee6f55e96475574e9f645327e461884c.tar.bz2 linux-3.10-3c726f8dee6f55e96475574e9f645327e461884c.zip | |
[PATCH] ppc64: support 64k pages
Adds a new CONFIG_PPC_64K_PAGES which, when enabled, changes the kernel
base page size to 64K. The resulting kernel still boots on any
hardware. On current machines with 4K pages support only, the kernel
will maintain 16 "subpages" for each 64K page transparently.
Note that while real 64K capable HW has been tested, the current patch
will not enable it yet as such hardware is not released yet, and I'm
still verifying with the firmware architects the proper to get the
information from the newer hypervisors.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-powerpc/iommu.h')
| -rw-r--r-- | include/asm-powerpc/iommu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h index 9d91bdd667a..6a35e6570cc 100644 --- a/include/asm-powerpc/iommu.h +++ b/include/asm-powerpc/iommu.h @@ -74,6 +74,11 @@ extern void iommu_devnode_init_pSeries(struct device_node *dn); /* Creates table for an individual device node */ extern void iommu_devnode_init_iSeries(struct device_node *dn); +/* Get table parameters from HV */ +extern void iommu_table_getparms_iSeries(unsigned long busno, + unsigned char slotno, + unsigned char virtbus, + struct iommu_table* tbl); #endif /* CONFIG_PPC_ISERIES */ |