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[PATCH 1/6] hw/pci/pci_host: Trace config accesses on unexisting functio
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH 1/6] hw/pci/pci_host: Trace config accesses on unexisting functions |
Date: |
Wed, 4 Jan 2023 14:39:30 +0100 |
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>
---
hw/pci/pci_host.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/hw/pci/pci_host.c b/hw/pci/pci_host.c
index eaf217ff55..ead1d3e61c 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;
}
--
2.38.1
- [PATCH 0/6] hw/mips/gt64xxx_pci: Fix endianness swap on big-endian hosts, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 1/6] hw/pci/pci_host: Trace config accesses on unexisting functions,
Philippe Mathieu-Daudé <=
- [PATCH 2/6] hw/mips/malta: Split FPGA LEDs/ASCII display updates, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 3/6] hw/mips/malta: Trace FPGA LEDs/ASCII display updates, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 4/6] hw/mips/gt64xxx_pci: Accumulate address space changes, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 5/6] hw/mips/gt64xxx_pci: Endian-swap using PCI_HOST_BRIDGE MemoryRegionOps, Philippe Mathieu-Daudé, 2023/01/04
- [PATCH 6/6] tests/avocado: Add tests booting YAMON ROM on MIPS Malta machines, Philippe Mathieu-Daudé, 2023/01/04
- Re: [PATCH 0/6] hw/mips/gt64xxx_pci: Fix endianness swap on big-endian hosts, Richard Henderson, 2023/01/04
- Re: [PATCH 0/6] hw/mips/gt64xxx_pci: Fix endianness swap on big-endian hosts, Philippe Mathieu-Daudé, 2023/01/13