mirror of
https://github.com/Motorhead1991/qemu.git
synced 2025-08-19 16:12:40 -06:00
aa37616fb4
When BAR aren't mapped, we get:
(qemu) info pci
Bus 0, device 0, function 0:
Host bridge: PCI device dead:beef
...
BAR4: 32 bit memory at 0xffffffffffffffff [0x00000ffe].
BAR5: I/O at 0xffffffffffffffff [0x0ffe].
Check the BAR is mapped comparing its address to PCI_BAR_UNMAPPED
which is what the PCI layer uses for unmapped BARs.
See pci_bar_address and pci_update_mappings implementations and
in "hw/pci/pci.h":
typedef struct PCIIORegion {
pcibus_t addr; /* current PCI mapping address. -1 means not mapped */
#define PCI_BAR_UNMAPPED (~(pcibus_t)0)
...
This improves the logging, not displaying bogus sizes:
(qemu) info pci
Bus 0, device 0, function 0:
Host bridge: PCI device dead:beef
...
BAR4: 32 bit memory (not mapped)
BAR5: I/O (not mapped)
Remove trailing dot which is not used in other commands format.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240801131449.51328-1-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
|
||
|---|---|---|
| .. | ||
| Kconfig | ||
| meson.build | ||
| msi.c | ||
| msix.c | ||
| pci-hmp-cmds.c | ||
| pci-internal.h | ||
| pci-qmp-cmds.c | ||
| pci-stub.c | ||
| pci.c | ||
| pci_bridge.c | ||
| pci_host.c | ||
| pcie.c | ||
| pcie_aer.c | ||
| pcie_doe.c | ||
| pcie_host.c | ||
| pcie_port.c | ||
| pcie_sriov.c | ||
| shpc.c | ||
| slotid_cap.c | ||
| trace-events | ||
| trace.h | ||