From f098d1c130f369f059a53cda5c38b3d4ea06a0b7 Mon Sep 17 00:00:00 2001
From: Emil Velikov <emil.l.velikov@gmail.com>
Date: Wed, 9 Sep 2015 16:48:29 +0100
Subject: [PATCH] tests/drmdevice: add new 'test'

A simple example of how to use/what is the new drm{Get,Free}Devices()
interface.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
---
 tests/Makefile.am |  1 +
 tests/drmdevice.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 94 insertions(+)
 create mode 100644 tests/drmdevice.c

diff --git a/tests/Makefile.am b/tests/Makefile.am
index a511d28a..c53f4af6 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -31,6 +31,7 @@ LDADD = $(top_builddir)/libdrm.la
 
 check_PROGRAMS = \
 	dristat \
+	drmdevice \
 	drmstat
 
 dristat_LDADD = -lm
diff --git a/tests/drmdevice.c b/tests/drmdevice.c
new file mode 100644
index 00000000..4055f450
--- /dev/null
+++ b/tests/drmdevice.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2015 Emil Velikov <emil.l.velikov@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <xf86drm.h>
+
+
+static void
+print_device_info(drmDevicePtr device, int i)
+{
+    printf("device[%i]\n", i);
+    printf("\tavailable_nodes %04x\n", device->available_nodes);
+    printf("\tnodes\n");
+    for (int j = 0; j < DRM_NODE_MAX; j++)
+        if (device->available_nodes & 1 << j)
+            printf("\t\tnodes[%d] %s\n", j, device->nodes[j]);
+
+    printf("\tbustype %04x\n", device->bustype);
+    printf("\tbusinfo\n");
+    if (device->bustype == DRM_BUS_PCI) {
+        printf("\t\tpci\n");
+        printf("\t\t\tdomain\t%04x\n",device->businfo.pci->domain);
+        printf("\t\t\tbu\t%02x\n", device->businfo.pci->bus);
+        printf("\t\t\tde\t%02x\n", device->businfo.pci->dev);
+        printf("\t\t\tfunc\t%1u\n", device->businfo.pci->func);
+
+        printf("\tdeviceinfo\n");
+        printf("\t\tpci\n");
+        printf("\t\t\tvendor_id\t%04x\n", device->deviceinfo.pci->vendor_id);
+        printf("\t\t\tdevice_id\t%04x\n", device->deviceinfo.pci->device_id);
+        printf("\t\t\tsubvendor_id\t%04x\n", device->deviceinfo.pci->subvendor_id);
+        printf("\t\t\tsubdevice_id\t%04x\n", device->deviceinfo.pci->subdevice_id);
+        printf("\t\t\trevision_id\t%02x\n", device->deviceinfo.pci->revision_id);
+    } else {
+        printf("Unknown/unhandled bustype\n");
+    }
+    printf("\n");
+}
+
+int
+main(void)
+{
+    drmDevicePtr *devices;
+    int ret, max_devices;
+
+    max_devices = drmGetDevices(NULL, 0);
+
+    if (max_devices <= 0) {
+        printf("drmGetDevices() has returned %d\n", max_devices);
+        return -1;
+    }
+
+    devices = calloc(max_devices, sizeof(drmDevicePtr));
+    if (devices == NULL) {
+        printf("Failed to allocate memory for the drmDevicePtr array\n");
+        return -1;
+    }
+
+    ret = drmGetDevices(devices, max_devices);
+    if (ret < 0) {
+        printf("drmGetDevices() returned an error %d\n", ret);
+        free(devices);
+        return -1;
+    }
+
+    for (int i = 0; i < ret; i++)
+        print_device_info(devices[i], i);
+
+    drmFreeDevices(devices, ret);
+    free(devices);
+    return 0;
+}