From: Alexey Kardashevskiy Date: Wed, 1 Jun 2022 04:01:17 +0000 (+1000) Subject: powerpc/pseries/iommu: Print ibm,query-pe-dma-windows parameters X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a28a2eff1e0ff684f51b3dc6371ff5b651a063d4;p=linux.git powerpc/pseries/iommu: Print ibm,query-pe-dma-windows parameters 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 Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220601040117.1467710-1-aik@ozlabs.ru --- diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index fba64304e8597..2fb10ef6dee8a 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -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; }