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eefb83790a
Add doorbell support with the help of three new registers: PCIE_ENDPOINT_TEST_DB_BAR, PCIE_ENDPOINT_TEST_DB_ADDR, and PCIE_ENDPOINT_TEST_DB_DATA. The testcase works by triggering the doorbell in Endpoint by writing the value from PCI_ENDPOINT_TEST_DB_DATA register to the address provided by PCI_ENDPOINT_TEST_DB_OFFSET register of the BAR indicated by the PCIE_ENDPOINT_TEST_DB_BAR register and waiting for the completion status from the Endpoint. Signed-off-by: Frank Li <Frank.Li@nxp.com> [mani: removed one spurious change and reworded the commit message] Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Niklas Cassel <cassel@kernel.org> Link: https://patch.msgid.link/20250710-ep-msi-v21-7-57683fc7fb25@nxp.com
40 lines
1.1 KiB
C
40 lines
1.1 KiB
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_DOORBELL _IO('P', 0xb)
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#define PCITEST_CLEAR_IRQ _IO('P', 0x10)
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#define PCITEST_IRQ_TYPE_UNDEFINED -1
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#define PCITEST_IRQ_TYPE_INTX 0
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#define PCITEST_IRQ_TYPE_MSI 1
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#define PCITEST_IRQ_TYPE_MSIX 2
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#define PCITEST_IRQ_TYPE_AUTO 3
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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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