add lspci sample

Signed-off-by: Thanos Makatos <thanos.makatos@nutanix.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/samples/lspci.c b/samples/lspci.c
new file mode 100644
index 0000000..674164b
--- /dev/null
+++ b/samples/lspci.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2019 Nutanix Inc. All rights reserved.
+ *
+ * Authors: Thanos Makatos <thanos@nutanix.com>
+ *          Swapnil Ingle <swapnil.ingle@nutanix.com>
+ *          Felipe Franciosi <felipe@nutanix.com>
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *      * Redistributions of source code must retain the above copyright
+ *        notice, this list of conditions and the following disclaimer.
+ *      * Redistributions in binary form must reproduce the above copyright
+ *        notice, this list of conditions and the following disclaimer in the
+ *        documentation and/or other materials provided with the distribution.
+ *      * Neither the name of Nutanix nor the names of its contributors may be
+ *        used to endorse or promote products derived from this software without
+ *        specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ *  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ *  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ *  DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <err.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "libvfio-user.h"
+
+int main(void)
+{
+    int i, j;
+    char *buf;
+    const int bytes_per_line = 0x10;
+    vfu_pci_hdr_id_t id = { 0 };
+    vfu_pci_hdr_ss_t ss = { 0 };
+    vfu_pci_hdr_cc_t cc = { 0 };
+    vfu_cap_t pm = {.pm = {.hdr.id = PCI_CAP_ID_PM, .pmcs.nsfrst = 0x1}};
+    vfu_cap_t *caps[1] = {&pm};
+    vfu_ctx_t *vfu_ctx = vfu_create_ctx(VFU_TRANS_SOCK, "",
+                                        LIBVFIO_USER_FLAG_ATTACH_NB, NULL,
+                                        VFU_DEV_TYPE_PCI);
+    if (vfu_ctx == NULL) {
+        err(EXIT_FAILURE, "failed to create libvfio-user context");
+    }
+    if (vfu_pci_setup_config_hdr(vfu_ctx, id, ss, cc, VFU_PCI_TYPE_CONVENTIONAL, 0) < 0) {
+        err(EXIT_FAILURE, "failed to setup PCI configuration space header");
+    }
+    if (vfu_pci_setup_caps(vfu_ctx, caps, 1) < 0) {
+        err(EXIT_FAILURE, "failed to setup PCI capabilities");
+    }
+    if (vfu_realize_ctx(vfu_ctx) < 0) {
+        err(EXIT_FAILURE, "failed to realize device");
+    }
+    buf = (char*)vfu_pci_get_config_space(vfu_ctx);;
+    printf("00:00.0 bogus PCI device\n");
+    for (i = 0; i < PCI_CFG_SPACE_SIZE / bytes_per_line; i++) {
+        printf("%02x:", i * bytes_per_line);
+        for (j = 0; j < bytes_per_line; j++) {
+            printf(" %02x", buf[i * bytes_per_line + j] & 0xff);
+        }
+        printf("\n");
+    } 
+
+    return 0;
+}
+
+/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */