gpu: nvgpu: unit: add tests for common.fifo.tsg

Added pre-populated register spaces for gv11b:
- NV_PFIFO 0x00003FFF:0x00002000
- NV_PTOP 0x000227FF:0x00022400

Registers values were captured on DDPX with reg_dump,
after disabling railgating and ELPG.

This allows running nvgpu_fifo_init_support, using
gv11b HALs.

Added the following tests:
- test_fifo_init_support
- test_tsg_open
- test_tsg_release
- test_fifo_remove_support

Jira NVGPU-3476

Change-Id: Ia717d9a9d431248635d51d0c265c16c2b6806a95
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2120564
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

userspace/units/fifo/tsg/nvgpu-tsg.c

@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2018-2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <unit/io.h>
+#include <unit/unit.h>
+
+#include <nvgpu/channel.h>
+#include <nvgpu/tsg.h>
+#include <nvgpu/gk20a.h>
+
+#include "hal/fifo/tsg_gk20a.h"
+
+#include "hal/init/hal_gv11b.h"
+
+#include "nvgpu-fifo-gv11b.h"
+
+struct test_tsg_args {
+	bool init_done;
+	struct nvgpu_tsg *tsg;
+};
+
+struct test_tsg_args test_args = {
+	.init_done = false,
+};
+
+/* test implementations of some hals */
+static u32 test_gv11b_gr_init_get_no_of_sm(struct gk20a *g)
+{
+	return 8;
+}
+
+static int test_fifo_init_support(struct unit_module *m,
+		struct gk20a *g, void *args)
+{
+	struct test_tsg_args *t = args;
+	int err;
+
+	if (t->init_done) {
+		unit_return_fail(m, "init already done");
+	}
+
+	err = test_fifo_setup_gv11b_reg_space(m, g);
+	if (err != 0) {
+		goto fail;
+	}
+
+	/*
+	 * set IS_FMODEL to avoid reading fuses
+	 * TODO: add fuses reg space to avoid this
+	 */
+	nvgpu_set_enabled(g, NVGPU_IS_FMODEL, true);
+	gv11b_init_hal(g);
+	g->ops.fifo.init_fifo_setup_hw = NULL;
+	nvgpu_set_enabled(g, NVGPU_IS_FMODEL, false);
+
+	err = nvgpu_fifo_init_support(g);
+	if (err != 0) {
+		test_fifo_cleanup_gv11b_reg_space(m, g);
+		goto fail;
+	}
+
+	t->init_done = true;
+
+	return UNIT_SUCCESS;
+
+fail:
+	return UNIT_FAIL;
+}
+
+static int test_tsg_open(struct unit_module *m,
+		struct gk20a *g, void *args)
+{
+	struct test_tsg_args *t = args;
+
+	g->ops.gr.init.get_no_of_sm = test_gv11b_gr_init_get_no_of_sm;
+	g->ops.tsg.init_eng_method_buffers = NULL;
+
+	t->tsg = nvgpu_tsg_open(g, getpid());
+	if (!t->tsg) {
+		unit_return_fail(m, "nvgpu_tsg_open failed");
+	}
+
+	return UNIT_SUCCESS;
+}
+
+static int test_tsg_release(struct unit_module *m,
+		struct gk20a *g, void *args)
+{
+	struct test_tsg_args *t = args;
+
+	if (t->tsg == NULL) {
+		unit_return_fail(m, "tsg in NULL");
+	}
+
+	nvgpu_ref_put(&t->tsg->refcount, nvgpu_tsg_release);
+	return UNIT_SUCCESS;
+}
+
+static int test_fifo_remove_support(struct unit_module *m,
+		struct gk20a *g, void *args)
+{
+	struct test_tsg_args *t = args;
+
+	if (!t->init_done) {
+		unit_return_fail(m, "missing init support");
+	}
+
+	if (g->fifo.remove_support) {
+		g->fifo.remove_support(&g->fifo);
+	}
+
+	return UNIT_SUCCESS;
+}
+
+struct unit_module_test nvgpu_tsg_tests[] = {
+	UNIT_TEST(init_support, test_fifo_init_support, &test_args, 0),
+	UNIT_TEST(open, test_tsg_open, &test_args, 0),
+	UNIT_TEST(release, test_tsg_release, &test_args, 0),
+	UNIT_TEST(remove_support, test_fifo_remove_support, &test_args, 0),
+};
+
+UNIT_MODULE(nvgpu_tsg, nvgpu_tsg_tests, UNIT_PRIO_NVGPU_TEST);