Commit 3bf4dfdd authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Michael S. Tsirkin
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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: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 1466cef3

hw/pci/pci_host.c

+10 −1
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 


#include "hw/pci/pci.h"

#include "hw/pci/pci_host.h"

#include "trace.h"



/* 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)

{

    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));

}



uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr,

                                     uint32_t limit, uint32_t len)

{

    uint32_t ret;



    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)

trace-events

+4 −0
Original line number Diff line number Diff line
@@ -1176,3 +1176,7 @@ object_class_dynamic_cast_assert(const char *type, const char *target, const cha 
# 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_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"