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powerpc/pseries/iommu: Print ibm,query-pe-dma-windows parameters

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PowerVM has a stricter policy about allocating TCEs for LPARs and
often there is not enough TCEs for 1:1 mapping, this adds the supported
numbers into dev_info() to help analyzing bugreports.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220601040117.1467710-1-aik@ozlabs.ru
This commit is contained in:
Alexey Kardashevskiy
2022-06-01 14:01:17 +10:00
committed by Michael Ellerman
parent 2d9206b227
commit a28a2eff1e
1 changed files with 5 additions and 3 deletions
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8
arch/powerpc/platforms/pseries/iommu.c
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@@ -1021,9 +1021,6 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail,
ret = rtas_call(ddw_avail[DDW_QUERY_PE_DMA_WIN], 3, out_sz, query_out,
cfg_addr, BUID_HI(buid), BUID_LO(buid));
dev_info(&dev->dev, "ibm,query-pe-dma-windows(%x) %x %x %x returned %d\n",
ddw_avail[DDW_QUERY_PE_DMA_WIN], cfg_addr, BUID_HI(buid),
BUID_LO(buid), ret);
switch (out_sz) {
case 5:
@@ -1041,6 +1038,11 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail,
break;
}
dev_info(&dev->dev, "ibm,query-pe-dma-windows(%x) %x %x %x returned %d, lb=%llx ps=%x wn=%d\n",
ddw_avail[DDW_QUERY_PE_DMA_WIN], cfg_addr, BUID_HI(buid),
BUID_LO(buid), ret, query->largest_available_block,
query->page_size, query->windows_available);
return ret;
}