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| author | Philippe Mathieu-Daudé <philmd@linaro.org> | 2023-02-11 16:22:39 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-03-02 19:13:52 -0500 |
| commit | 28566eab2dd147f93735bc986513fff5fa5a236d (patch) | |
| tree | ffe5da0ab62cb8f9b2e142db2cbb5cc16b50e236 /hw/pci | |
| parent | 9c1916057a8b14411116106e5a5c0c33d551cfeb (diff) | |
| download | qemu-28566eab2dd147f93735bc986513fff5fa5a236d.zip qemu-28566eab2dd147f93735bc986513fff5fa5a236d.tar.gz qemu-28566eab2dd147f93735bc986513fff5fa5a236d.tar.bz2 | |
hw/pci: Trace IRQ routing on PCI topology
Trace how IRQ are rooted from EP to RC.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230211152239.88106-3-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/pci')
| -rw-r--r-- | hw/pci/pci.c | 8 | ||||
| -rw-r--r-- | hw/pci/trace-events | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/hw/pci/pci.c b/hw/pci/pci.c index bad8e63..08060b3 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -279,9 +279,13 @@ static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change) { PCIBus *bus; for (;;) { + int dev_irq = irq_num; bus = pci_get_bus(pci_dev); assert(bus->map_irq); irq_num = bus->map_irq(pci_dev, irq_num); + trace_pci_route_irq(dev_irq, DEVICE(pci_dev)->canonical_path, irq_num, + pci_bus_is_root(bus) ? "root-complex" + : DEVICE(bus->parent_dev)->canonical_path); if (bus->set_irq) break; pci_dev = bus->parent_dev; @@ -1600,8 +1604,12 @@ PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin) PCIBus *bus; do { + int dev_irq = pin; bus = pci_get_bus(dev); pin = bus->map_irq(dev, pin); + trace_pci_route_irq(dev_irq, DEVICE(dev)->canonical_path, pin, + pci_bus_is_root(bus) ? "root-complex" + : DEVICE(bus->parent_dev)->canonical_path); dev = bus->parent_dev; } while (dev); diff --git a/hw/pci/trace-events b/hw/pci/trace-events index aaf46bc..4243086 100644 --- a/hw/pci/trace-events +++ b/hw/pci/trace-events @@ -3,6 +3,7 @@ # pci.c pci_update_mappings_del(const char *dev, uint32_t bus, uint32_t slot, uint32_t func, int bar, uint64_t addr, uint64_t size) "%s %02x:%02x.%x %d,0x%"PRIx64"+0x%"PRIx64 pci_update_mappings_add(const char *dev, uint32_t bus, uint32_t slot, uint32_t func, int bar, uint64_t addr, uint64_t size) "%s %02x:%02x.%x %d,0x%"PRIx64"+0x%"PRIx64 +pci_route_irq(int dev_irq, const char *dev_path, int parent_irq, const char *parent_path) "IRQ %d @%s -> IRQ %d @%s" # pci_host.c pci_cfg_read(const char *dev, uint32_t bus, uint32_t slot, uint32_t func, unsigned offs, unsigned val) "%s %02x:%02x.%x @0x%x -> 0x%x" |