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| author | Bin Meng <bmeng.cn@gmail.com> | 2019-11-22 07:27:52 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-02-27 13:46:35 -0800 |
| commit | acead54c78c7294612f529413673eb4286fb8b18 (patch) | |
| tree | 5d51df9cd926302d0dc7512acd3449bded0dd6d8 | |
| parent | c9eefe05a42d05d7a6dc49805f123579e5558d5d (diff) | |
| download | qemu-acead54c78c7294612f529413673eb4286fb8b18.zip qemu-acead54c78c7294612f529413673eb4286fb8b18.tar.gz qemu-acead54c78c7294612f529413673eb4286fb8b18.tar.bz2 | |
riscv: virt: Allow PCI address 0
When testing e1000 with the virt machine, e1000's I/O space cannot
be accessed. Debugging shows that the I/O BAR (BAR1) is correctly
written with address 0 plus I/O enable bit, but QEMU's "info pci"
shows that:
Bus 0, device 1, function 0:
Ethernet controller: PCI device 8086:100e
...
BAR1: I/O at 0xffffffffffffffff [0x003e].
...
It turns out we should set pci_allow_0_address to true to allow 0
PCI address, otherwise pci_bar_address() treats such address as
PCI_BAR_UNMAPPED.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
| -rw-r--r-- | hw/riscv/virt.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 7f9e1e5..5d175d5 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -641,6 +641,7 @@ static void riscv_virt_machine_class_init(ObjectClass *oc, void *data) mc->init = riscv_virt_board_init; mc->max_cpus = 8; mc->default_cpu_type = VIRT_CPU; + mc->pci_allow_0_address = true; } static const TypeInfo riscv_virt_machine_typeinfo = { |