pseries: Add PCI MSI/MSI-X support
This patch implements MSI and MSI-X support for the pseries PCI host
bridge. To do this it adds:
* A "config_space_address to msi_table" map, since the MSI RTAS calls
take a PCI config space address as an identifier.
* A MSIX memory region to catch msi_notify()/msix_notiry() from
virtio-pci and pass them to the guest via qemu_irq_pulse().
* RTAS call "ibm,change-msi" which sets up MSI vectors for a
device. Note that this call may configure and return lesser number of
vectors than requested.
* RTAS call "ibm,query-interrupt-source-number" which translates MSI
vector to interrupt controller (XICS) IRQ number.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[agraf: fix error case ndev < 0]
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/trace-events b/trace-events
index 191b39e..04b0723 100644
--- a/trace-events
+++ b/trace-events
@@ -972,4 +972,9 @@
qxl_render_update_area_done(void *cookie) "%p"
# hw/spapr_pci.c
+spapr_pci_msi(const char *msg, uint32_t n, uint32_t ca) "%s (device#%d, cfg=%x)"
+spapr_pci_msi_setup(const char *name, unsigned vector, uint64_t addr) "dev\"%s\" vector %u, addr=%"PRIx64
+spapr_pci_rtas_ibm_change_msi(unsigned func, unsigned req) "func %u, requested %u"
+spapr_pci_rtas_ibm_query_interrupt_source_number(unsigned ioa, unsigned intr) "queries for #%u, IRQ%u"
+spapr_pci_msi_write(uint64_t addr, uint64_t data, uint32_t dt_irq) "@%"PRIx64"<=%"PRIx64" IRQ %u"
spapr_pci_lsi_set(const char *busname, int pin, uint32_t irq) "%s PIN%d IRQ %u"
