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pci: add config space access traces 

This adds pci_cfg_read and pci_cfg_write traces for config spaces
accesses.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Alexey Kardashevskiy 2013-08-21 14:42:06 +10:00 committed by Michael S. Tsirkin
parent 1466cef32d
commit 3bf4dfdd11
2 changed files with 14 additions and 1 deletions
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11
hw/pci/pci_host.c
View File

@ -20,6 +20,7 @@
#include "hw/pci/pci.h" #include "hw/pci/pci.h"
#include "hw/pci/pci_host.h" #include "hw/pci/pci_host.h"
#include "trace.h"
/* debug PCI */ /* debug PCI */
//#define DEBUG_PCI //#define DEBUG_PCI
@ -51,14 +52,22 @@ void pci_host_config_write_common(PCIDevice *pci_dev, uint32_t addr,
uint32_t limit, uint32_t val, uint32_t len) uint32_t limit, uint32_t val, uint32_t len)
{ {
assert(len <= 4); assert(len <= 4);
trace_pci_cfg_write(pci_dev->name, PCI_SLOT(pci_dev->devfn),
PCI_FUNC(pci_dev->devfn), addr, val);
pci_dev->config_write(pci_dev, addr, val, MIN(len, limit - addr)); pci_dev->config_write(pci_dev, addr, val, MIN(len, limit - addr));
} }
uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr, uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr,
uint32_t limit, uint32_t len) uint32_t limit, uint32_t len)
{ {
uint32_t ret;
assert(len <= 4); assert(len <= 4);
return pci_dev->config_read(pci_dev, addr, MIN(len, limit - addr)); ret = pci_dev->config_read(pci_dev, addr, MIN(len, limit - addr));
trace_pci_cfg_read(pci_dev->name, PCI_SLOT(pci_dev->devfn),
PCI_FUNC(pci_dev->devfn), addr, ret);
return ret;
} }
void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len) void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len)

4
trace-events
View File

@ -1176,3 +1176,7 @@ object_class_dynamic_cast_assert(const char *type, const char *target, const cha
# hw/xen/xen_pvdevice.c # hw/xen/xen_pvdevice.c
xen_pv_mmio_read(uint64_t addr) "WARNING: read from Xen PV Device MMIO space (address %"PRIx64")" xen_pv_mmio_read(uint64_t addr) "WARNING: read from Xen PV Device MMIO space (address %"PRIx64")"
xen_pv_mmio_write(uint64_t addr) "WARNING: write to Xen PV Device MMIO space (address %"PRIx64")" xen_pv_mmio_write(uint64_t addr) "WARNING: write to Xen PV Device MMIO space (address %"PRIx64")"
# hw/pci/pci_host.c
pci_cfg_read(const char *dev, unsigned devid, unsigned fnid, unsigned offs, unsigned val) "%s %02u:%u @0x%x -> 0x%x"
pci_cfg_write(const char *dev, unsigned devid, unsigned fnid, unsigned offs, unsigned val) "%s %02u:%u @0x%x <- 0x%x"