diff options
| 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 /include/hw | |
| parent | f1215ea702e6e6cb3876221cf1f7f60133e08c30 (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>
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/ppc/spapr.h | 4 |
1 files changed, 3 insertions, 1 deletions
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 |