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powerpc: dart_iommu: optionally populate controller_ops on init

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If a pci_controller_ops struct is provided to iommu_init_early_dart,
populate that with the DMA setup ops, rather than ppc_md. If NULL is
provided, populate ppc_md as before.

This also patches the call sites for Maple and Power Mac to pass
NULL, so existing behaviour is preserved.

The benefit of making this optional is that it means we don't have
to change dart, Maple and Power Mac over to the controller_ops
system in one fell swoop.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Daniel Axtens
2015-03-31 16:00:48 +11:00
committed by Michael Ellerman
parent cd16c7ba0c
commit 798248a3c0
4 changed files with 16 additions and 7 deletions
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2
arch/powerpc/platforms/powermac/setup.c
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@@ -473,7 +473,7 @@ static void __init pmac_init_early(void)
udbg_adb_init(!!strstr(boot_command_line, "btextdbg"));
#ifdef CONFIG_PPC64
iommu_init_early_dart();
iommu_init_early_dart(NULL);
#endif
/* SMP Init has to be done early as we need to patch up