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| author | Philippe Mathieu-Daudé <philmd@linaro.org> | 2023-01-04 12:13:00 +0100 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2023-01-13 16:22:57 +0100 |
| commit | 1bdad09bf3326b89add221ef092e57ed81f6e347 (patch) | |
| tree | 27449c6f0e8914ad8ad958823162981871796888 | |
| parent | f9950374300cb4d8d898bbfc694a0639e9aafdc3 (diff) | |
| download | qemu-1bdad09bf3326b89add221ef092e57ed81f6e347.zip qemu-1bdad09bf3326b89add221ef092e57ed81f6e347.tar.gz qemu-1bdad09bf3326b89add221ef092e57ed81f6e347.tar.bz2 | |
hw/pci/pci_host: Trace config accesses on unexisting functions
Currently we only emit trace events for existing PCI functions.
In order to ease debugging PCI enumeration process, also emit
for unexisting functions:
$ qemu-system-foo -trace pci_cfg_\*
...
pci_cfg_read empty 00:0a.4 @0x0 -> 0xffffffff
pci_cfg_read empty 00:0a.5 @0x0 -> 0xffffffff
pci_cfg_read empty 00:0a.6 @0x0 -> 0xffffffff
pci_cfg_read empty 00:0a.7 @0x0 -> 0xffffffff
pci_cfg_read pcnet 00:0b.0 @0x0 -> 0x20001022
pci_cfg_read empty 00:0c.0 @0x0 -> 0xffffffff
pci_cfg_read empty 00:0d.0 @0x0 -> 0xffffffff
pci_cfg_read empty 00:0e.0 @0x0 -> 0xffffffff
pci_cfg_read empty 00:0f.0 @0x0 -> 0xffffffff
pci_cfg_read empty 00:10.0 @0x0 -> 0xffffffff
pci_cfg_read empty 00:11.0 @0x0 -> 0xffffffff
pci_cfg_read cirrus-vga 00:12.0 @0x0 -> 0xb81013
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230104133935.4639-2-philmd@linaro.org>
| -rw-r--r-- | hw/pci/pci_host.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/pci/pci_host.c b/hw/pci/pci_host.c index eaf217f..ead1d3e 100644 --- a/hw/pci/pci_host.c +++ b/hw/pci/pci_host.c @@ -118,6 +118,9 @@ void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, unsigned len) uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1); if (!pci_dev) { + trace_pci_cfg_write("empty", extract32(addr, 16, 8), + extract32(addr, 11, 5), extract32(addr, 8, 3), + config_addr, val); return; } @@ -131,6 +134,9 @@ uint32_t pci_data_read(PCIBus *s, uint32_t addr, unsigned len) uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1); if (!pci_dev) { + trace_pci_cfg_read("empty", extract32(addr, 16, 8), + extract32(addr, 11, 5), extract32(addr, 8, 3), + config_addr, ~0x0); return ~0x0; } |