[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [RFC PATCH v2 05/13] spapr_pci: Introduce a liobn number ge
From: |
Alexey Kardashevskiy |
Subject: |
[Qemu-devel] [RFC PATCH v2 05/13] spapr_pci: Introduce a liobn number generating macros |
Date: |
Fri, 15 Aug 2014 20:12:27 +1000 |
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, will be used in next patch(es) to distinguish the default
32bit windows from dynamic windows.
Signed-off-by: Alexey Kardashevskiy <address@hidden>
---
hw/ppc/spapr_pci.c | 2 +-
include/hw/ppc/spapr.h | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 5c46c0d..17eb0d8 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -529,7 +529,7 @@ 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;
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index c9d6c6c..782519a 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -443,7 +443,8 @@ 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(i, n) (0x80000000 | ((i) << 8) | (n))
+#define SPAPR_PCI_DMA_WINDOW_NUM(liobn) ((liobn) & 0xff)
#define RTAS_ERROR_LOG_MAX 2048
--
2.0.0
- [Qemu-devel] [RFC PATCH v2 01/13] qom: Make object_child_foreach safe for objects removal, (continued)
- [Qemu-devel] [RFC PATCH v2 08/13] spapr_pci: Enable DDW, Alexey Kardashevskiy, 2014/08/15
- [Qemu-devel] [RFC PATCH v2 03/13] spapr_pci: Make find_phb()/find_dev() public, Alexey Kardashevskiy, 2014/08/15
- [Qemu-devel] [RFC PATCH v2 05/13] spapr_pci: Introduce a liobn number generating macros,
Alexey Kardashevskiy <=
- [Qemu-devel] [RFC PATCH v2 04/13] spapr_iommu: Make spapr_tce_find_by_liobn() public, Alexey Kardashevskiy, 2014/08/15
- [Qemu-devel] [RFC PATCH v2 02/13] spapr_iommu: Disable in-kernel IOMMU tables for >4GB windows, Alexey Kardashevskiy, 2014/08/15
- [Qemu-devel] [RFC PATCH v2 10/13] linux headers update for DDW, Alexey Kardashevskiy, 2014/08/15