Some platforms like TI's K2G have a restriction that the host side buffer
address should be aligned to either 1MB/2MB/4MB or 8MB addresses depending
on how it is configured in the endpoint (Ref: 11.14.4.9.1 Outbound Address
Translation in K2G TRM SPRUHY8F January 2016 – Revised May 2017). This
restriction also applies to the MSI addresses provided by the RC. However
it's not possible for the RC to know about this restriction and it may not
provide 1MB/2MB/4MB or 8MB aligned address. So MSI interrupts should be
disabled even if the K2G EP has MSI capabiltiy register.
Add support to not enable MSI interrupts in pci_endpoint_test driver so
that it can be used to test K2G EP.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Some platforms like TI's K2G have a restriction that the host side buffer
address should be aligned to either 1MB/2MB/4MB or 8MB (Ref: 11.14.4.9.1
Outbound Address Translation in K2G TRM SPRUHY8F January 2016 – Revised May
2017) addresses depending on how it is configured in the endpoint.
Add support to provide such aligned address here so that pci_endpoint_test
driver can be used to test K2G EP.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
pci_endpoint_test driver assumes the PCI_ENDPOINT_TEST registers will
always be mapped to BAR_0. This need not always be the case like in TI's
K2G where BAR_0 is mapped to PCI controller application registers.
Add support so that PCI_ENDPOINT_TEST registers can be mapped to any BAR.
Change the bar_size used for BAR test accordingly.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Add PCI endpoint test driver that can verify base address register, legacy
interrupt/MSI interrupt and read/write/copy buffers between host and
device. The corresponding pci-epf-test function driver should be used on
the EP side.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
