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authorAlexey Kardashevskiy <aik@ozlabs.ru>2015-05-07 15:33:30 +1000
committerAlexander Graf <agraf@suse.de>2015-06-03 23:56:50 +0200
commitc8545818b331e9a32e5dd47f0aefbcf2b93e41da (patch)
treecbc7b088971985f6f9f6fed59e81a75d1b675cee
parentf1215ea702e6e6cb3876221cf1f7f60133e08c30 (diff)
spapr_pci: Introduce a liobn number generating macros
We are going to have multiple DMA windows per PHB and we want them to migrate so we need a predictable way of assigning LIOBNs. This introduces a macro which makes up a LIOBN from fixed prefix, PHB index (unique PHB id) and window number. This introduces a SPAPR_PCI_DMA_WINDOW_NUM() to know the window number from LIOBN. It is used to distinguish the default 32bit windows from dynamic windows and avoid picking default DMA window properties from a wrong TCE table. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
-rw-r--r--hw/ppc/spapr_pci.c4
-rw-r--r--include/hw/ppc/spapr.h4
2 files changed, 5 insertions, 3 deletions
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 03f6d961d2..a69d908b95 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -760,7 +760,7 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
}
sphb->buid = SPAPR_PCI_BASE_BUID + sphb->index;
- sphb->dma_liobn = SPAPR_PCI_BASE_LIOBN + sphb->index;
+ sphb->dma_liobn = SPAPR_PCI_LIOBN(sphb->index, 0);
windows_base = SPAPR_PCI_WINDOW_BASE
+ sphb->index * SPAPR_PCI_WINDOW_SPACING;
@@ -1101,7 +1101,7 @@ static int spapr_phb_children_dt(Object *child, void *opaque)
sPAPRTCETable *tcet;
tcet = (sPAPRTCETable *) object_dynamic_cast(child, TYPE_SPAPR_TCE_TABLE);
- if (!tcet) {
+ if (!tcet || SPAPR_PCI_DMA_WINDOW_NUM(tcet->liobn)) {
return 0;
}
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index af71e8b0d5..9a9bb90323 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -482,7 +482,9 @@ int spapr_rtas_device_tree_setup(void *fdt, hwaddr rtas_addr,
#define SPAPR_TCE_PAGE_MASK (SPAPR_TCE_PAGE_SIZE - 1)
#define SPAPR_VIO_BASE_LIOBN 0x00000000
-#define SPAPR_PCI_BASE_LIOBN 0x80000000
+#define SPAPR_PCI_LIOBN(phb_index, window_num) \
+ (0x80000000 | ((phb_index) << 8) | (window_num))
+#define SPAPR_PCI_DMA_WINDOW_NUM(liobn) ((liobn) & 0xff)
#define RTAS_ERROR_LOG_MAX 2048