OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

ide/via: don't attempt to set default BAR addresses

Browse Source 
The via-ide device currently attempts to set the default BAR addresses to the
values shown in the datasheet, but this doesn't work for 2 reasons: firstly
BARS 1-4 do not set the bottom 2 bits to PCI_BASE_ADDRESS_SPACE_IO, and
secondly the initial PCI bus reset clears the values of all PCI device BARs
after the device itself has been reset.

Remove the setting of the default BAR addresses from via_ide_reset() to ensure
there is no doubt that these values are never exposed to the guest.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-ID: <20231116103355.588580-4-mark.cave-ayland@ilande.co.uk>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Mark Cave-Ayland 2023-11-16 10:33:54 +00:00 committed by Kevin Wolf
parent fd6a543d19
commit 7a9d672b81
1 changed files with 0 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
hw/ide/via.c
View File

@ -132,11 +132,6 @@ static void via_ide_reset(DeviceState *dev)
pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
PCI_STATUS_DEVSEL_MEDIUM);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_0, 0x000001f0);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_1, 0x000003f4);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_2, 0x00000170);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_3, 0x00000374);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_4, 0x0000cc01); /* BMIBA: 20-23h */
pci_set_long(pci_conf + PCI_INTERRUPT_LINE, 0x0000010e);
/* IDE chip enable, IDE configuration 1/2, IDE FIFO Configuration*/