On 12/07/17 10:09, Artyom Tarasenko wrote: > On Tue, Jul 11, 2017 at 11:53 PM, Mark Cave-Ayland > <mark.cave-ayl...@ilande.co.uk> wrote: >> Signed-off-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk> >> --- >> hw/pci-host/apb.c | 6 ++---- >> 1 file changed, 2 insertions(+), 4 deletions(-) >> >> diff --git a/hw/pci-host/apb.c b/hw/pci-host/apb.c >> index 622c341..5ad7678 100644 >> --- a/hw/pci-host/apb.c >> +++ b/hw/pci-host/apb.c >> @@ -561,7 +561,7 @@ static uint64_t apb_config_readl (void *opaque, >> static const MemoryRegionOps apb_config_ops = { >> .read = apb_config_readl, >> .write = apb_config_writel, >> - .endianness = DEVICE_NATIVE_ENDIAN, >> + .endianness = DEVICE_BIG_ENDIAN, > > Is this correct? I thought all the PCI config registers are always > little-endian.
Yes - these are the registers on the APB itself... >> }; >> >> static void apb_pci_config_write(void *opaque, hwaddr addr, >> @@ -570,7 +570,6 @@ static void apb_pci_config_write(void *opaque, hwaddr >> addr, >> APBState *s = opaque; >> PCIHostState *phb = PCI_HOST_BRIDGE(s); >> >> - val = qemu_bswap_len(val, size); >> APB_DPRINTF("%s: addr " TARGET_FMT_plx " val %" PRIx64 "\n", __func__, >> addr, val); >> pci_data_write(phb->bus, addr, val, size); >> } >> @@ -583,7 +582,6 @@ static uint64_t apb_pci_config_read(void *opaque, hwaddr >> addr, >> PCIHostState *phb = PCI_HOST_BRIDGE(s); >> >> ret = pci_data_read(phb->bus, addr, size); >> - ret = qemu_bswap_len(ret, size); >> APB_DPRINTF("%s: addr " TARGET_FMT_plx " -> %x\n", __func__, addr, ret); >> return ret; >> } >> @@ -744,7 +742,7 @@ static void pci_pbm_reset(DeviceState *d) >> static const MemoryRegionOps pci_config_ops = { >> .read = apb_pci_config_read, >> .write = apb_pci_config_write, >> - .endianness = DEVICE_NATIVE_ENDIAN, >> + .endianness = DEVICE_LITTLE_ENDIAN, ... while these are the PCI config registers. It's this endian change here that makes it possible to remove the qemu_bswap_len() calls included in the diff above. ATB, Mark.