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| author | Cédric Le Goater <clg@kaod.org> | 2020-01-27 15:45:06 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2020-02-02 14:07:57 +1100 |
| commit | 9ae1329ee2fee95f201ca219090d7c742eaf6a90 (patch) | |
| tree | fea34e2d2ac683817d1affb4c46537051b96431f /hw/intc | |
| parent | 4f9924c4d4cf9c039e247c5cdbbf71bce4e573c3 (diff) | |
| download | qemu-9ae1329ee2fee95f201ca219090d7c742eaf6a90.zip qemu-9ae1329ee2fee95f201ca219090d7c742eaf6a90.tar.gz qemu-9ae1329ee2fee95f201ca219090d7c742eaf6a90.tar.bz2 | |
ppc/pnv: Add models for POWER8 PHB3 PCIe Host bridge
This is a model of the PCIe Host Bridge (PHB3) found on a POWER8
processor. It includes the PowerBus logic interface (PBCQ), IOMMU
support, a single PCIe Gen.3 Root Complex, and support for MSI and LSI
interrupt sources as found on a POWER8 system using the XICS interrupt
controller.
The POWER8 processor comes in different flavors: Venice, Murano,
Naple, each having a different number of PHBs. To make things simpler,
the models provides 3 PHB3 per chip. Some platforms, like the
Firestone, can also couple PHBs on the first chip to provide more
bandwidth but this is too specific to model in QEMU.
XICS requires some adjustment to support the PHB3 MSI. The changes are
provided here but they could be decoupled in prereq patches.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200127144506.11132-3-clg@kaod.org>
[dwg: Use device_class_set_props()]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/intc')
| -rw-r--r-- | hw/intc/xics.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/hw/intc/xics.c b/hw/intc/xics.c index 785b607..c5d507e 100644 --- a/hw/intc/xics.c +++ b/hw/intc/xics.c @@ -217,7 +217,7 @@ void icp_eoi(ICPState *icp, uint32_t xirr) } } -static void icp_irq(ICSState *ics, int server, int nr, uint8_t priority) +void icp_irq(ICSState *ics, int server, int nr, uint8_t priority) { ICPState *icp = xics_icp_get(ics->xics, server); @@ -512,8 +512,14 @@ void ics_write_xive(ICSState *ics, int srcno, int server, static void ics_reject(ICSState *ics, uint32_t nr) { + ICSStateClass *isc = ICS_GET_CLASS(ics); ICSIRQState *irq = ics->irqs + nr - ics->offset; + if (isc->reject) { + isc->reject(ics, nr); + return; + } + trace_xics_ics_reject(nr, nr - ics->offset); if (irq->flags & XICS_FLAGS_IRQ_MSI) { irq->status |= XICS_STATUS_REJECTED; @@ -524,8 +530,14 @@ static void ics_reject(ICSState *ics, uint32_t nr) void ics_resend(ICSState *ics) { + ICSStateClass *isc = ICS_GET_CLASS(ics); int i; + if (isc->resend) { + isc->resend(ics); + return; + } + for (i = 0; i < ics->nr_irqs; i++) { /* FIXME: filter by server#? */ if (ics->irqs[i].flags & XICS_FLAGS_IRQ_LSI) { |