On 23.09.18 11:22, Nir Geller wrote:
Hi Jan,
I'm using jailhouse v0.8, so pci_domain is not available.
However, after commenting out
linux,pci-domain = <0>;
from pcie1_rc: pcie@51000000 in dra7.dtsi I get good results from lspci -v
root@am57xx-evm:~# lspci -v
0000:00:00.0 PCI bridge: Texas Instruments Multicore DSP+ARM KeyStone II SOC
(rev 01) (prog-if 00 [Normal decode])
...
0000:01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
...
0001:00:00.0 Unassigned class [ff00]: Red Hat, Inc Inter-VM shared memory
Subsystem: Red Hat, Inc Inter-VM shared memory
Flags: fast devsel
Memory at 30100000 (64-bit, non-prefetchable) [size=256]
Memory at <unassigned> (64-bit, non-prefetchable)
Capabilities: [50] MSI-X: Enable- Count=1 Masked-
Should I worry about the following output?
[ 80.456250] PCI: bus0: Fast back to back transfers disabled
That's related to the physical PCI interface - if it is reported without
Jailhouse as well, it's possibly expected.
Now I would like to pass interrupts between cells. I'm following Giovani
Gracioli's thread https://groups.google.com/forum/#!topic/jailhouse-dev/L2sjyl1xFDg
According to which I'm now using uio_ivshmem kernel module.
When I enable the root cell the function pci_alloc_irq_vectors() fails because
dev->irq is set to 0.
I don't know if it is related at all, the dts file skips some irqs from linux
/ {
ocp {
pruss1_eth {
status = "disabled";
};
pruss2_eth {
status = "disabled";
};
crossbar_mpu: crossbar@4a002a48 {
ti,irqs-skip = <10 44 127 129 133 134 135 136 137 139
140>;
};
};
};
Attached is the root cell configuration file
Is .vpci_irq_base related?
Yes, but it is not used in your setup because you set num_msix_vectors in the
vpci device to non-zero. Don't do that, there is no MSI support on your platform
IIRC.
Jan
--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux
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