diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-19 22:21:32 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:13:41 -0800 |
| commit | 6a32fd4d0d42258004631dc0ac90665382a2e5dc (patch) | |
| tree | f2a73240a7cfadfb3097121279b6e5a7651812e5 /arch/sparc64/kernel/pci_sun4v_asm.S | |
| parent | 04d74758eb7dce6dfb7d2101315827c267ffefc4 (diff) | |
[SPARC64]: Remove PGLIST_NENTS PCI IOMMU mapping limitation on SUN4V.
Use a batching queue system for IOMMU mapping setup,
with a page sized batch.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/pci_sun4v_asm.S')
| -rw-r--r-- | arch/sparc64/kernel/pci_sun4v_asm.S | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/sparc64/kernel/pci_sun4v_asm.S b/arch/sparc64/kernel/pci_sun4v_asm.S index 424db652664..6604fdbf746 100644 --- a/arch/sparc64/kernel/pci_sun4v_asm.S +++ b/arch/sparc64/kernel/pci_sun4v_asm.S @@ -11,14 +11,19 @@ * %o3: io_attributes * %o4: io_page_list phys address * - * returns %o0: num ttes mapped + * returns %o0: -status if status was non-zero, else + * %o0: num pages mapped */ .globl pci_sun4v_iommu_map pci_sun4v_iommu_map: + mov %o5, %g1 mov HV_FAST_PCI_IOMMU_MAP, %o5 ta HV_FAST_TRAP - retl - mov %o1, %o0 + brnz,pn %o0, 1f + sub %g0, %o0, %o0 + mov %o1, %o0 +1: retl + nop /* %o0: devhandle * %o1: tsbid |