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[Qemu-devel] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host
From: |
David Gibson |
Subject: |
[Qemu-devel] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges |
Date: |
Tue, 13 Nov 2012 13:47:00 +1100 |
From: Alexey Kardashevskiy <address@hidden>
In future (with VFIO) we will have multiple PCI host bridges on
pseries. Each one needs a unique LIOBN (IOMMU id). At the moment we
derive these from the pci domain number, but the whole notion of
domain numbers on the qemu side is bogus and in any case they're not
actually uniquely allocated at this point.
This patch, therefore uses a simple sequence counter to generate
unique LIOBNs for PCI host bridges.
Signed-off-by: Alexey Kardashevskiy <address@hidden>
Signed-off-by: David Gibson <address@hidden>
---
hw/spapr_pci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/spapr_pci.c b/hw/spapr_pci.c
index 3c5b855..f6544d7 100644
--- a/hw/spapr_pci.c
+++ b/hw/spapr_pci.c
@@ -521,6 +521,7 @@ static int spapr_phb_init(SysBusDevice *s)
char *namebuf;
int i;
PCIBus *bus;
+ static int phbnum;
sphb->dtbusname = g_strdup_printf("address@hidden" PRIx64, sphb->buid);
namebuf = alloca(strlen(sphb->dtbusname) + 32);
@@ -572,7 +573,7 @@ static int spapr_phb_init(SysBusDevice *s)
PCI_DEVFN(0, 0), PCI_NUM_PINS);
phb->bus = bus;
- sphb->dma_liobn = SPAPR_PCI_BASE_LIOBN | (pci_find_domain(bus) << 16);
+ sphb->dma_liobn = SPAPR_PCI_BASE_LIOBN | (++phbnum << 16);
sphb->dma_window_start = 0;
sphb->dma_window_size = 0x40000000;
sphb->dma = spapr_tce_new_dma_context(sphb->dma_liobn,
sphb->dma_window_size);
--
1.7.10.4
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 08/12] target-ppc: Convert ppcemb_tlb_t to use fixed 64-bit RPN, (continued)
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 08/12] target-ppc: Convert ppcemb_tlb_t to use fixed 64-bit RPN, Alexander Graf, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 08/12] target-ppc: Convert ppcemb_tlb_t to use fixed 64-bit RPN, Peter Maydell, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 08/12] target-ppc: Convert ppcemb_tlb_t to use fixed 64-bit RPN, Alexander Graf, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 08/12] target-ppc: Convert ppcemb_tlb_t to use fixed 64-bit RPN, David Gibson, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 08/12] target-ppc: Convert ppcemb_tlb_t to use fixed 64-bit RPN, Alexander Graf, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 08/12] target-ppc: Convert ppcemb_tlb_t to use fixed 64-bit RPN, David Gibson, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 08/12] target-ppc: Convert ppcemb_tlb_t to use fixed 64-bit RPN, Alexander Graf, 2012/11/21
[Qemu-devel] [PATCH 06/12] pseries: Add tracepoints to the XICS interrupt controller, David Gibson, 2012/11/12
[Qemu-devel] [PATCH 07/12] pseries: Split xics irq configuration from state information, David Gibson, 2012/11/12
[Qemu-devel] [PATCH 11/12] pseries: Fix bug in PCI MSI allocation, David Gibson, 2012/11/12
[Qemu-devel] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges,
David Gibson <=
- Re: [Qemu-devel] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, Alexander Graf, 2012/11/19
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, David Gibson, 2012/11/19
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, Alexander Graf, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, Michael S. Tsirkin, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, David Gibson, 2012/11/20
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, Michael S. Tsirkin, 2012/11/21
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, David Gibson, 2012/11/21
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, Michael S. Tsirkin, 2012/11/21
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, David Gibson, 2012/11/21
- Re: [Qemu-devel] [Qemu-ppc] [PATCH 12/12] pseries: Generate unique LIOBNs for PCI host bridges, Alexander Graf, 2012/11/21