diff options
Diffstat (limited to 'hw/pci/pci.c')
| -rw-r--r-- | hw/pci/pci.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 4a84e478ce..e5993c1ef5 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -1380,6 +1380,9 @@ static void pci_update_mappings(PCIDevice *d) continue; new_addr = pci_bar_address(d, i, r->type, r->size); + if (!d->has_power) { + new_addr = PCI_BAR_UNMAPPED; + } /* This bar isn't changed */ if (new_addr == r->addr) @@ -1464,8 +1467,8 @@ void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val_in, int if (range_covers_byte(addr, l, PCI_COMMAND)) { pci_update_irq_disabled(d, was_irq_disabled); memory_region_set_enabled(&d->bus_master_enable_region, - pci_get_word(d->config + PCI_COMMAND) - & PCI_COMMAND_MASTER); + (pci_get_word(d->config + PCI_COMMAND) + & PCI_COMMAND_MASTER) && d->has_power); } msi_write_config(d, addr, val_in, l); @@ -2182,6 +2185,8 @@ static void pci_qdev_realize(DeviceState *qdev, Error **errp) pci_qdev_unrealize(DEVICE(pci_dev)); return; } + + pci_set_power(pci_dev, true); } PCIDevice *pci_new_multifunction(int devfn, bool multifunction, @@ -2853,6 +2858,22 @@ MSIMessage pci_get_msi_message(PCIDevice *dev, int vector) return msg; } +void pci_set_power(PCIDevice *d, bool state) +{ + if (d->has_power == state) { + return; + } + + d->has_power = state; + pci_update_mappings(d); + memory_region_set_enabled(&d->bus_master_enable_region, + (pci_get_word(d->config + PCI_COMMAND) + & PCI_COMMAND_MASTER) && d->has_power); + if (!d->has_power) { + pci_device_reset(d); + } +} + static const TypeInfo pci_device_type_info = { .name = TYPE_PCI_DEVICE, .parent = TYPE_DEVICE, |