diff options
Diffstat (limited to 'hw/usb/hcd-ehci-pci.c')
| -rw-r--r-- | hw/usb/hcd-ehci-pci.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/hw/usb/hcd-ehci-pci.c b/hw/usb/hcd-ehci-pci.c index fe45a1fbba..5887eab197 100644 --- a/hw/usb/hcd-ehci-pci.c +++ b/hw/usb/hcd-ehci-pci.c @@ -17,6 +17,7 @@ #include "hw/usb/hcd-ehci.h" #include "hw/pci.h" +#include "range.h" typedef struct EHCIPCIState { PCIDevice pcidev; @@ -79,6 +80,21 @@ static int usb_ehci_pci_initfn(PCIDevice *dev) return 0; } +static void usb_ehci_pci_write_config(PCIDevice *dev, uint32_t addr, + uint32_t val, int l) +{ + EHCIPCIState *i = DO_UPCAST(EHCIPCIState, pcidev, dev); + bool busmaster; + + pci_default_write_config(dev, addr, val, l); + + if (!range_covers_byte(addr, l, PCI_COMMAND)) { + return; + } + busmaster = pci_get_word(dev->config + PCI_COMMAND) & PCI_COMMAND_MASTER; + i->ehci.dma = busmaster ? pci_dma_context(dev) : NULL; +} + static Property ehci_pci_properties[] = { DEFINE_PROP_UINT32("maxframes", EHCIPCIState, ehci.maxframes, 128), DEFINE_PROP_END_OF_LIST(), @@ -106,6 +122,7 @@ static void ehci_class_init(ObjectClass *klass, void *data) k->device_id = i->device_id; k->revision = i->revision; k->class_id = PCI_CLASS_SERIAL_USB; + k->config_write = usb_ehci_pci_write_config; dc->vmsd = &vmstate_ehci_pci; dc->props = ehci_pci_properties; } |