--- /dev/null
+/*
+ * Copyright 2021 Advanced Micro Devices, Inc.
+ *
+ * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+
+#include "CUnit/Basic.h"
+
+#include "amdgpu_test.h"
+#include "amdgpu_drm.h"
+#include "amdgpu_internal.h"
+#include "xf86drm.h"
+#include <pthread.h>
+
+
+static amdgpu_device_handle device_handle;
+static uint32_t major_version;
+static uint32_t minor_version;
+static char *sysfs_remove = NULL;
+
+CU_BOOL suite_hotunplug_tests_enable(void)
+{
+ CU_BOOL enable = CU_TRUE;
+ drmDevicePtr device;
+
+ if (drmGetDevice2(drm_amdgpu[0], DRM_DEVICE_GET_PCI_REVISION, &device)) {
+ printf("\n\nGPU Failed to get DRM device PCI info!\n");
+ return CU_FALSE;
+ }
+
+ if (device->bustype != DRM_BUS_PCI) {
+ printf("\n\nGPU device is not on PCI bus!\n");
+ amdgpu_device_deinitialize(device_handle);
+ return CU_FALSE;
+ }
+
+ /* Disable until the hot-unplug support in kernel gets into drm-next */
+ if (major_version < 0xff)
+ enable = false;
+
+ if (amdgpu_device_initialize(drm_amdgpu[0], &major_version,
+ &minor_version, &device_handle))
+ return CU_FALSE;
+
+ /* TODO Once DRM version for unplug feature ready compare here agains it*/
+
+ if (amdgpu_device_deinitialize(device_handle))
+ return CU_FALSE;
+
+ return enable;
+}
+
+int suite_hotunplug_tests_init(void)
+{
+ /* We need to open/close device at each test manually */
+ amdgpu_close_devices();
+
+ return CUE_SUCCESS;
+}
+
+int suite_hotunplug_tests_clean(void)
+{
+
+
+ return CUE_SUCCESS;
+}
+
+static int amdgpu_hotunplug_trigger(const char *pathname)
+{
+ int fd, len;
+
+ fd = open(pathname, O_WRONLY);
+ if (fd < 0)
+ return -errno;
+
+ len = write(fd, "1", 1);
+ close(fd);
+
+ return len;
+}
+
+static int amdgpu_hotunplug_setup_test()
+{
+ int r;
+ char *tmp_str;
+
+ if (amdgpu_open_device_on_test_index(open_render_node) <= 0) {
+ printf("\n\n Failed to reopen device file!\n");
+ return CUE_SINIT_FAILED;
+
+
+
+ }
+
+ r = amdgpu_device_initialize(drm_amdgpu[0], &major_version,
+ &minor_version, &device_handle);
+
+ if (r) {
+ if ((r == -EACCES) && (errno == EACCES))
+ printf("\n\nError:%s. "
+ "Hint:Try to run this test program as root.",
+ strerror(errno));
+ return CUE_SINIT_FAILED;
+ }
+
+ tmp_str = amdgpu_get_device_from_fd(drm_amdgpu[0]);
+ if (!tmp_str){
+ printf("\n\n Device path not found!\n");
+ return CUE_SINIT_FAILED;
+ }
+
+ sysfs_remove = realloc(tmp_str, strlen(tmp_str) * 2);
+ strcat(sysfs_remove, "/remove");
+
+ return 0;
+
+}
+
+static int amdgpu_hotunplug_teardown_test()
+{
+ if (amdgpu_device_deinitialize(device_handle))
+ return CUE_SCLEAN_FAILED;
+
+ amdgpu_close_devices();
+
+ if (sysfs_remove)
+ free(sysfs_remove);
+
+ return 0;
+}
+
+static inline int amdgpu_hotunplug_remove()
+{
+ return amdgpu_hotunplug_trigger(sysfs_remove);
+}
+
+static inline int amdgpu_hotunplug_rescan()
+{
+ return amdgpu_hotunplug_trigger("/sys/bus/pci/rescan");
+}
+
+
+static void amdgpu_hotunplug_simple(void)
+{
+ int r;
+
+ r = amdgpu_hotunplug_setup_test();
+ CU_ASSERT_EQUAL(r , 0);
+
+ r = amdgpu_hotunplug_remove();
+ CU_ASSERT_EQUAL(r > 0, 1);
+
+ r = amdgpu_hotunplug_teardown_test();
+ CU_ASSERT_EQUAL(r , 0);
+
+ r = amdgpu_hotunplug_rescan();
+ CU_ASSERT_EQUAL(r > 0, 1);
+}
+
+CU_TestInfo hotunplug_tests[] = {
+ { "Unplug card and rescan the bus to plug it back", amdgpu_hotunplug_simple },
+ CU_TEST_INFO_NULL,
+};
+
+
projects / platform / upstream / libdrm.git / commitdiff