Open source GPL/LGPL release

drivers/gpu/nvgpu/os/linux/sim.c

@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2018-2021, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/io.h>
+#include <linux/highmem.h>
+#include <linux/platform_device.h>
+
+#include <nvgpu/log.h>
+#include <nvgpu/linux/vm.h>
+#include <nvgpu/bitops.h>
+#include <nvgpu/nvgpu_mem.h>
+#include <nvgpu/dma.h>
+#include <nvgpu/soc.h>
+#include <nvgpu/hw_sim.h>
+#include <nvgpu/sim.h>
+#include <nvgpu/gk20a.h>
+
+#include "platform_gk20a.h"
+#include "os_linux.h"
+#include "module.h"
+
+void nvgpu_remove_sim_support_linux(struct gk20a *g)
+{
+	struct sim_nvgpu_linux *sim_linux;
+
+	if (!g->sim)
+		return;
+
+	sim_linux = container_of(g->sim, struct sim_nvgpu_linux, sim);
+	if (g->sim->regs) {
+		sim_writel(g->sim, sim_config_r(), sim_config_mode_disabled_v());
+		iounmap((void __iomem *)g->sim->regs);
+		g->sim->regs = 0U;
+	}
+	nvgpu_kfree(g, sim_linux);
+	g->sim = NULL;
+}
+
+int nvgpu_init_sim_support_linux(struct gk20a *g,
+		struct platform_device *dev)
+{
+	struct sim_nvgpu_linux *sim_linux;
+	void __iomem *addr;
+	int err = -ENOMEM;
+
+	if (!nvgpu_platform_is_simulation(g))
+		return 0;
+
+	sim_linux = nvgpu_kzalloc(g, sizeof(*sim_linux));
+	if (!sim_linux)
+		return err;
+	g->sim = &sim_linux->sim;
+	g->sim->g = g;
+	addr = nvgpu_devm_ioremap_resource(dev,
+					GK20A_SIM_IORESOURCE_MEM,
+					NULL);
+	if (IS_ERR(addr)) {
+		nvgpu_err(g, "failed to remap gk20a sim regs");
+		err = PTR_ERR(addr);
+		goto fail;
+	}
+	g->sim->regs = (uintptr_t)addr;
+	sim_linux->remove_support_linux = nvgpu_remove_sim_support_linux;
+	return 0;
+
+fail:
+	nvgpu_remove_sim_support_linux(g);
+	return err;
+}