126 lines
4.5 KiB
C
126 lines
4.5 KiB
C
/*
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* Copyright (c) 2019 Nutanix Inc. All rights reserved.
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*
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* Authors: Thanos Makatos <thanos@nutanix.com>
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* Swapnil Ingle <swapnil.ingle@nutanix.com>
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* Felipe Franciosi <felipe@nutanix.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Nutanix nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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*/
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#include <err.h>
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "libvfio-user.h"
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int main(void)
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{
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int i, j;
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char *buf;
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const int bytes_per_line = 0x10;
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struct vsc *vsc = alloca(sizeof(*vsc) + 0xd);
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struct pcie_ext_cap_vsc_hdr *evsc = alloca(sizeof(*evsc) + 0xd);
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struct dsncap dsn = { .hdr.id = PCI_EXT_CAP_ID_DSN,
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.sn_lo = 0xdeadbeef,
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.sn_hi = 0xcafebabe };
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struct pmcap pm = { .hdr.id = PCI_CAP_ID_PM, .pmcs.nsfrst = 0x1 };
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/* Required for lspci to report extended caps. */
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struct pxcap px = {
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.hdr.id = PCI_CAP_ID_EXP,
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.pxdcap = {.flrc = 0x1}
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};
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vfu_ctx_t *vfu_ctx = vfu_create_ctx(VFU_TRANS_SOCK, "",
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LIBVFIO_USER_FLAG_ATTACH_NB, NULL,
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VFU_DEV_TYPE_PCI);
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if (vfu_ctx == NULL) {
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err(EXIT_FAILURE, "failed to create libvfio-user context");
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}
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if (vfu_pci_init(vfu_ctx, VFU_PCI_TYPE_EXPRESS,
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PCI_HEADER_TYPE_NORMAL, 0) < 0) {
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err(EXIT_FAILURE, "vfu_pci_init() failed");
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}
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if (vfu_pci_add_capability(vfu_ctx, 0, 0, &pm) < 0) {
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err(EXIT_FAILURE, "vfu_pci_add_capability() failed");
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}
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memset(vsc, 0, 0x10);
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vsc->hdr.id = PCI_CAP_ID_VNDR;
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vsc->size = 0x10;
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memcpy(vsc->data, "abcdefgh", 8);
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if (vfu_pci_add_capability(vfu_ctx, 0, 0, vsc) < 0) {
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err(EXIT_FAILURE, "vfu_pci_add_capability() failed");
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}
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if (vfu_pci_add_capability(vfu_ctx, 0, 0, &px) < 0) {
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err(EXIT_FAILURE, "vfu_pci_add_capability() failed");
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}
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if (vfu_pci_add_capability(vfu_ctx, 0, VFU_CAP_FLAG_EXTENDED, &dsn) < 0) {
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err(EXIT_FAILURE, "vfu_pci_add_capability() failed");
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}
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memset(evsc, 0, sizeof(*evsc) + 0xd);
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evsc->hdr.id = PCI_EXT_CAP_ID_VNDR;
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evsc->id = 1;
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evsc->rev = 1;
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evsc->len = sizeof(*evsc) + 0xd;
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if (vfu_pci_add_capability(vfu_ctx, 0, VFU_CAP_FLAG_EXTENDED, evsc) < 0) {
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err(EXIT_FAILURE, "vfu_pci_add_capability() failed");
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}
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evsc->id = 2;
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evsc->rev = 2;
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if (vfu_pci_add_capability(vfu_ctx, 0x400,
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VFU_CAP_FLAG_EXTENDED, evsc) < 0) {
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err(EXIT_FAILURE, "vfu_pci_add_capability() failed");
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}
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if (vfu_realize_ctx(vfu_ctx) < 0) {
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err(EXIT_FAILURE, "failed to realize device");
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}
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buf = (char*)vfu_pci_get_config_space(vfu_ctx);
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printf("00:00.0 bogus PCI device\n");
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for (i = 0; i < PCI_CFG_SPACE_EXP_SIZE / bytes_per_line; i++) {
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printf("%02x:", i * bytes_per_line);
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for (j = 0; j < bytes_per_line; j++) {
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printf(" %02x", buf[i * bytes_per_line + j] & 0xff);
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}
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printf("\n");
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}
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vfu_destroy_ctx(vfu_ctx);
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return 0;
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}
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/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */
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