Date: Sun, 15 Nov 2015 01:50:18 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r290839 - projects/powernv/powerpc/powernv Message-ID: <201511150150.tAF1oIRv033903@repo.freebsd.org>
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Author: nwhitehorn Date: Sun Nov 15 01:50:17 2015 New Revision: 290839 URL: https://svnweb.freebsd.org/changeset/base/290839 Log: Deal with the IOMMU with a hammer: turn it off. Full booting now blocked by the fact that non-IPI IRQs don't work for some reason. Modified: projects/powernv/powerpc/powernv/opal.h projects/powernv/powerpc/powernv/opal_pci.c Modified: projects/powernv/powerpc/powernv/opal.h ============================================================================== --- projects/powernv/powerpc/powernv/opal.h Sat Nov 14 23:43:59 2015 (r290838) +++ projects/powernv/powerpc/powernv/opal.h Sun Nov 15 01:50:17 2015 (r290839) @@ -50,9 +50,16 @@ int opal_call(uint64_t token, ...); #define OPAL_PCI_CONFIG_WRITE_WORD 18 #define OPAL_SET_XIVE 19 #define OPAL_GET_XIVE 20 +#define OPAL_PCI_SET_PE 31 #define OPAL_START_CPU 41 +#define OPAL_PCI_MAP_PE_DMA_WINDOW_REAL 45 + +/* For OPAL_PCI_SET_PE */ +#define OPAL_UNMAP_PE 0 +#define OPAL_MAP_PE 1 #define OPAL_SUCCESS 0 +#define OPAL_PARAMETER -1 #define OPAL_BUSY_EVENT -12 #endif Modified: projects/powernv/powerpc/powernv/opal_pci.c ============================================================================== --- projects/powernv/powerpc/powernv/opal_pci.c Sat Nov 14 23:43:59 2015 (r290838) +++ projects/powernv/powerpc/powernv/opal_pci.c Sun Nov 15 01:50:17 2015 (r290839) @@ -124,6 +124,7 @@ opalpci_attach(device_t dev) { struct opalpci_softc *sc; cell_t id[2]; + int err; sc = device_get_softc(dev); @@ -142,6 +143,28 @@ opalpci_attach(device_t dev) return (ENXIO); } + /* + * Map all devices on the bus to partitionable endpoint zero until + * such time as we start wanting to do things like bhyve. + */ + err = opal_call(OPAL_PCI_SET_PE, sc->phb_id, 0 /* Root PE */, + 0, 0, 0, 0, /* All devices */ + OPAL_MAP_PE); + if (err != 0) { + device_printf(dev, "PE mapping failed: %d\n", err); + return (ENXIO); + } + + /* + * Also disable the IOMMU for the time being for PE 0 (everything) + */ + err = opal_call(OPAL_PCI_MAP_PE_DMA_WINDOW_REAL, sc->phb_id, 0, 0, + 0 /* start address */, roundup2(Maxmem, 16*1024*1024)/* all RAM */); + if (err != 0) { + device_printf(dev, "DMA mapping failed: %d\n", err); + return (ENXIO); + } + return (ofw_pci_attach(dev)); }
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