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d6658d3338
Add a more advanced BAR test that writes all BARs in one go, and then reads them back and verifies that the value matches the BAR number bitwise OR'ed with offset, this allows us to verify: - The BAR number was what we intended to read - The offset was what we intended to read This allows us to detect potential address translation issues on the EP. Reading back the BAR directly after writing will not allow us to detect the case where inbound address translation on the endpoint incorrectly causes multiple BARs to be redirected to the same memory region (within the EP). Link: https://lore.kernel.org/r/20241116032045.2574168-2-cassel@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
34 lines
956 B
C
34 lines
956 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* pcitest.h - PCI test uapi defines
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*
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* Copyright (C) 2017 Texas Instruments
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* Author: Kishon Vijay Abraham I <kishon@ti.com>
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*
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*/
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#ifndef __UAPI_LINUX_PCITEST_H
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#define __UAPI_LINUX_PCITEST_H
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#define PCITEST_BAR _IO('P', 0x1)
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#define PCITEST_INTX_IRQ _IO('P', 0x2)
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#define PCITEST_LEGACY_IRQ PCITEST_INTX_IRQ
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#define PCITEST_MSI _IOW('P', 0x3, int)
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#define PCITEST_WRITE _IOW('P', 0x4, unsigned long)
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#define PCITEST_READ _IOW('P', 0x5, unsigned long)
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#define PCITEST_COPY _IOW('P', 0x6, unsigned long)
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#define PCITEST_MSIX _IOW('P', 0x7, int)
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#define PCITEST_SET_IRQTYPE _IOW('P', 0x8, int)
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#define PCITEST_GET_IRQTYPE _IO('P', 0x9)
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#define PCITEST_BARS _IO('P', 0xa)
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#define PCITEST_CLEAR_IRQ _IO('P', 0x10)
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#define PCITEST_FLAGS_USE_DMA 0x00000001
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struct pci_endpoint_test_xfer_param {
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unsigned long size;
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unsigned char flags;
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};
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#endif /* __UAPI_LINUX_PCITEST_H */
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