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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2015-05-07 15:33:30 +1000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2015-06-03 23:56:50 +0200 |
| commit | c8545818b331e9a32e5dd47f0aefbcf2b93e41da (patch) | |
| tree | cbc7b088971985f6f9f6fed59e81a75d1b675cee | |
| parent | f1215ea702e6e6cb3876221cf1f7f60133e08c30 (diff) | |
| download | hqemu-c8545818b331e9a32e5dd47f0aefbcf2b93e41da.zip hqemu-c8545818b331e9a32e5dd47f0aefbcf2b93e41da.tar.gz | |
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.c | 4 | ||||
| -rw-r--r-- | include/hw/ppc/spapr.h | 4 |
2 files changed, 5 insertions, 3 deletions
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index 03f6d96..a69d908 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 af71e8b..9a9bb90 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 |
