@@ -145,6 +145,9 @@ static void pci_device_reset(PCIDevice *dev)
pci_word_test_and_clear_mask(dev->config + PCI_COMMAND,
pci_get_word(dev->wmask + PCI_COMMAND) |
pci_get_word(dev->w1cmask + PCI_COMMAND));
+ pci_word_test_and_clear_mask(dev->config + PCI_STATUS,
+ pci_get_word(dev->wmask + PCI_STATUS) |
+ pci_get_word(dev->w1cmask + PCI_STATUS));
dev->config[PCI_CACHE_LINE_SIZE] = 0x0;
dev->config[PCI_INTERRUPT_LINE] = 0x0;
for (r = 0; r < PCI_NUM_REGIONS; ++r) {
@@ -540,7 +543,7 @@ static void pci_init_cmask(PCIDevice *dev)
dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
}
-static void pci_init_wmask(PCIDevice *dev)
+static void pci_init_wmask_w1cmask(PCIDevice *dev)
{
int config_size = pci_config_size(dev);
@@ -595,6 +598,40 @@ static void pci_init_wmask(PCIDevice *dev)
PCI_COMMAND_MASTER | PCI_COMMAND_PARITY | PCI_COMMAND_SERR |
PCI_COMMAND_INTX_DISABLE);
+ /*
+ * bit 0-2: reserved
+ * bit 3: PCI_STATUS_INTERRUPT: RO
+ * bit 4: PCI_STATUS_CAP_LIST: RO
+ * bit 5: PCI_STATUS_66MHZ: RO
+ * bit 6: PCI_STATUS_UDF: reserved (PCI 2.2-)
+ * bit 7: PCI_STATUS_FAST_BACK: RO
+ * bit 8: PCI_STATUS_PARITY
+ * type 0: RW for bus master
+ * type 1: RW1C
+ * bit 9-10: PCI_STATUS_DEVSEL: RO
+ * bit 11: PCI_STATUS_SIG_TARGET_ABORT
+ * type 0: RW1C for targets that is capable of terminating
+ * a transaction.
+ * type 1: RW1C
+ * bit 12: PCI_STATUS_REC_TARGET_ABORT
+ * type 0: RW1C for masters
+ * type 1: RW1C
+ * bit 13: PCI_STATUS_REC_MASTER_ABORT
+ * type 0: RW1C for masters
+ * type 1: RW1C
+ * bit 14: PCI_STATUS_SIG_SYSTEM_ERROR
+ * type 0: RW1C with execptions
+ * type 1: RW1C
+ * bit : PCI_STATUS_DETECTED_PARITY: RW1C
+ *
+ * It's okay to set w1mask even for RO=0(i.e. reserved) because
+ * writing value 1 to w1c bit whose value is 0 has no effect.
+ */
+ pci_set_word(dev->w1cmask + PCI_STATUS,
+ PCI_STATUS_PARITY | PCI_STATUS_SIG_TARGET_ABORT |
+ PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT |
+ PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY);
+
memset(dev->wmask + PCI_CONFIG_HEADER_SIZE, 0xff,
config_size - PCI_CONFIG_HEADER_SIZE);
}
@@ -725,7 +762,7 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
pci_set_default_subsystem_id(pci_dev);
}
pci_init_cmask(pci_dev);
- pci_init_wmask(pci_dev);
+ pci_init_wmask_w1cmask(pci_dev);
if (is_bridge) {
pci_init_wmask_bridge(pci_dev);
}
This patch refine the initialization/reset of pci status registers. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> --- hw/pci.c | 41 +++++++++++++++++++++++++++++++++++++++-- 1 files changed, 39 insertions(+), 2 deletions(-)