Open source GPL/LGPL release

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

@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2019-2021, 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/mm.h>
+#include <nvgpu/fifo/userd.h>
+#include <nvgpu/gk20a.h>
+#include <nvgpu/device.h>
+#include <nvgpu/cic.h>
+
+#include <nvgpu/posix/io.h>
+
+#include <nvgpu/hw/gv11b/hw_gr_gv11b.h>
+
+#include "hal/init/hal_gv11b.h"
+
+#include "nvgpu-fifo-common.h"
+#include "nvgpu-fifo-gv11b.h"
+
+static struct unit_module *global_m;
+
+/*
+ * If taken, some branches are final, e.g. the function exits.
+ * There is no need to test subsequent branches combinations,
+ * if one final branch is taken.
+ *
+ * We want to skip the subtest if:
+ * - it has at least one final branch
+ * - it is supposed to test some branches after this final branch
+ *
+ * Parameters:
+ * branches		bitmask of branches to be taken for one subtest
+ * final_branches	bitmask of final branches
+ *
+ * Note: the assumption is that branches are numbered in their
+ * order of appearance in the function to be tested.
+ */
+bool test_fifo_subtest_pruned(u32 branches, u32 final_branches)
+{
+	u32 match = branches & final_branches;
+	int bit;
+
+	if (match == 0U) {
+		return false;
+	}
+	bit = nvgpu_ffs(match) - 1;
+
+	return (branches > BIT(bit));
+}
+
+static int test_fifo_flags_strn(char *dst, size_t size,
+		const char *labels[], u32 flags)
+{
+	int i;
+	char *p = dst;
+	int len;
+
+	for (i = 0; i < 32; i++) {
+		if (flags & BIT(i)) {
+			len = snprintf(p, size, "%s ", labels[i]);
+			size -= len;
+			p += len;
+		}
+	}
+
+	return (p - dst);
+}
+
+/* not MT-safe */
+char *test_fifo_flags_str(u32 flags, const char *labels[])
+{
+	static char buf[256];
+
+	memset(buf, 0, sizeof(buf));
+	test_fifo_flags_strn(buf, sizeof(buf), labels, flags);
+	return buf;
+}
+
+u32 test_fifo_get_log2(u32 num)
+{
+	u32 res = 0;
+
+	if (num == 0) {
+		return 0;
+	}
+	while (num > 0) {
+		res++;
+		num >>= 1;
+	}
+	return res - 1U;
+}
+
+static u32 stub_gv11b_gr_init_get_no_of_sm(struct gk20a *g)
+{
+	return 8;
+}
+
+static void stub_gr_falcon_dump_stats(struct gk20a *g)
+{
+}
+
+#ifdef CONFIG_NVGPU_USERD
+static int stub_userd_setup_sw(struct gk20a *g)
+{
+	int err = nvgpu_userd_init_slabs(g);
+
+	if (err != 0) {
+		unit_err(global_m, "failed to init userd support");
+		return err;
+	}
+
+	return 0;
+}
+#endif
+
+int test_fifo_init_support(struct unit_module *m, struct gk20a *g, void *args)
+{
+	int err;
+
+	err = test_fifo_setup_gv11b_reg_space(m, g);
+	if (err != 0) {
+		goto fail;
+	}
+
+	if (nvgpu_posix_io_add_reg_space(g,
+			 gr_fecs_feature_override_ecc_r(), 0x4) != 0) {
+		unit_err(m, "Add reg space failed!\n");
+		return UNIT_FAIL;
+	}
+
+	if (nvgpu_posix_io_add_reg_space(g,
+			gr_fecs_feature_override_ecc_1_r(), 0x4) != 0) {
+		unit_err(m, "Add reg space failed!\n");
+		return UNIT_FAIL;
+	}
+
+	gv11b_init_hal(g);
+	g->ops.gr.init.get_no_of_sm = stub_gv11b_gr_init_get_no_of_sm;
+	g->ops.gr.falcon.dump_stats = stub_gr_falcon_dump_stats;
+
+	global_m = m;
+
+#ifdef CONFIG_NVGPU_USERD
+	/*
+	 * Regular USERD init requires bar1.vm to be initialized
+	 * Use a stub in unit tests, since it will be disabled in
+	 * safety build anyway.
+	 */
+	g->ops.userd.setup_sw = stub_userd_setup_sw;
+#endif
+	g->ops.ecc.ecc_init_support(g);
+
+	/* PD cache must be initialized prior to mm init */
+	err = nvgpu_pd_cache_init(g);
+
+	g->ops.mm.init_mm_support(g);
+
+	nvgpu_device_init(g);
+
+	err = nvgpu_fifo_init_support(g);
+
+	/* Do not allocate from vidmem */
+	nvgpu_set_enabled(g, NVGPU_MM_UNIFIED_MEMORY, true);
+
+	err = nvgpu_cic_init_common(g);
+	if (err != 0) {
+		unit_err(m, "CIC init failed!\n");
+		return UNIT_FAIL;
+	}
+
+	return UNIT_SUCCESS;
+
+fail:
+	return UNIT_FAIL;
+}
+
+int test_fifo_remove_support(struct unit_module *m,
+		struct gk20a *g, void *args)
+{
+	if (g->fifo.remove_support) {
+		g->fifo.remove_support(&g->fifo);
+	}
+
+	return UNIT_SUCCESS;
+}