That was used by some old IBM internal bringup tools and is
no longer relevant.
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
---
arch/powerpc/platforms/pseries/iommu.c | 53 +---------------------------------
1 file changed, 1 insertion(+), 52 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/iommu.c
b/arch/powerpc/platforms/pseries/iommu.c
index 3e8865b..770a753 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -120,35 +120,6 @@ static void iommu_pseries_free_group(struct
iommu_table_group *table_group,
kfree(table_group);
}
-static void tce_invalidate_pSeries_sw(struct iommu_table *tbl,
- __be64 *startp, __be64 *endp)
-{
- u64 __iomem *invalidate = (u64 __iomem *)tbl->it_index;
- unsigned long start, end, inc;
-
- start = __pa(startp);
- end = __pa(endp);
- inc = L1_CACHE_BYTES; /* invalidate a cacheline of TCEs at a time */
-
- /* If this is non-zero, change the format. We shift the
- * address and or in the magic from the device tree. */
- if (tbl->it_busno) {
- start <<= 12;
- end <<= 12;
- inc <<= 12;
- start |= tbl->it_busno;
- end |= tbl->it_busno;
- }
-
- end |= inc - 1; /* round up end to be different than start */
-
- mb(); /* Make sure TCEs in memory are written */
- while (start <= end) {
- out_be64(invalidate, start);
- start += inc;
- }
-}
-
static int tce_build_pSeries(struct iommu_table *tbl, long index,
long npages, unsigned long uaddr,
enum dma_data_direction direction,
@@ -173,9 +144,6 @@ static int tce_build_pSeries(struct iommu_table *tbl, long
index,
uaddr += TCE_PAGE_SIZE;
tcep++;
}
-
- if (tbl->it_type & TCE_PCI_SWINV_CREATE)
- tce_invalidate_pSeries_sw(tbl, tces, tcep - 1);
return 0;
}
@@ -188,9 +156,6 @@ static void tce_free_pSeries(struct iommu_table *tbl, long
index, long npages)
while (npages--)
*(tcep++) = 0;
-
- if (tbl->it_type & TCE_PCI_SWINV_FREE)
- tce_invalidate_pSeries_sw(tbl, tces, tcep - 1);
}
static unsigned long tce_get_pseries(struct iommu_table *tbl, long index)
@@ -537,7 +502,7 @@ static void iommu_table_setparms(struct pci_controller *phb,
struct iommu_table *tbl)
{
struct device_node *node;
- const unsigned long *basep, *sw_inval;
+ const unsigned long *basep;
const u32 *sizep;
node = phb->dn;
@@ -575,22 +540,6 @@ static void iommu_table_setparms(struct pci_controller
*phb,
tbl->it_index = 0;
tbl->it_blocksize = 16;
tbl->it_type = TCE_PCI;
-
- sw_inval = of_get_property(node, "linux,tce-sw-invalidate-info", NULL);
- if (sw_inval) {
- /*
- * This property contains information on how to
- * invalidate the TCE entry. The first property is
- * the base MMIO address used to invalidate entries.
- * The second property tells us the format of the TCE
- * invalidate (whether it needs to be shifted) and
- * some magic routing info to add to our invalidate
- * command.
- */
- tbl->it_index = (unsigned long) ioremap(sw_inval[0], 8);
- tbl->it_busno = sw_inval[1]; /* overload this with magic */
- tbl->it_type = TCE_PCI_SWINV_CREATE | TCE_PCI_SWINV_FREE;
- }
}
/*
--
2.7.4
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