gpu: nvgpu: gv11b: added initial source code

Bug 1735757

Change-Id: Iea7488551a437afa0dfc005c87ad1b9ab9673b6c
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/1122123
GVS: Gerrit_Virtual_Submit
Reviewed-by: Ken Adams <kadams@nvidia.com>

1 files changed, 149 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/platform_gv11b_tegra.c b/drivers/gpu/nvgpu/gv11b/platform_gv11b_tegra.c
new file mode 100644
index 00000000..322bebc8
--- /dev/null
+++ b/drivers/gpu/nvgpu/gv11b/platform_gv11b_tegra.c
@@ -0,0 +1,149 @@
+/*
+ * GV11B Tegra Platform Interface
+ *
+ * Copyright (c) 2016, 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.
+ */
+
+#include <linux/of_platform.h>
+#include <linux/nvhost.h>
+#include <linux/debugfs.h>
+#include <linux/tegra-powergate.h>
+#include <linux/platform_data/tegra_edp.h>
+#include <uapi/linux/nvgpu.h>
+#include <linux/dma-buf.h>
+#include <linux/nvmap.h>
+#include <linux/tegra_pm_domains.h>
+#include <linux/reset.h>
+#include <linux/hashtable.h>
+#include "gk20a/platform_gk20a.h"
+#include "gk20a/gk20a.h"
+#include "platform_tegra.h"
+#include "gr_gv11b.h"
+#include "hw_gr_gv11b.h"
+
+/*
+ * gv11b_tegra_get_clocks()
+ *
+ * This function finds clocks in tegra platform and populates
+ * the clock information to gv11b platform data.
+ */
+
+static int gv11b_tegra_get_clocks(struct device *dev)
+{
+        /* TODO */
+        return 0;
+}
+
+static int gv11b_tegra_probe(struct device *dev)
+{
+        struct gk20a_platform *platform = dev_get_drvdata(dev);
+        struct device_node *np = dev->of_node;
+        struct device_node *host1x_node;
+        struct platform_device *host1x_pdev;
+        const __be32 *host1x_ptr;
+
+        host1x_ptr = of_get_property(np, "nvidia,host1x", NULL);
+        if (!host1x_ptr) {
+                gk20a_err(dev, "host1x device not available");
+                return -ENOSYS;
+        }
+
+        host1x_node = of_find_node_by_phandle(be32_to_cpup(host1x_ptr));
+        host1x_pdev = of_find_device_by_node(host1x_node);
+        if (!host1x_pdev) {
+                gk20a_err(dev, "host1x device not available");
+                return -ENOSYS;
+        }
+
+        platform->g->host1x_dev = host1x_pdev;
+        platform->bypass_smmu = !device_is_iommuable(dev);
+        platform->disable_bigpage = platform->bypass_smmu;
+
+        platform->g->gr.t18x.ctx_vars.dump_ctxsw_stats_on_channel_close
+                = false;
+        platform->g->gr.t18x.ctx_vars.dump_ctxsw_stats_on_channel_close
+                = false;
+
+        platform->g->gr.t18x.ctx_vars.force_preemption_gfxp = false;
+        platform->g->gr.t18x.ctx_vars.force_preemption_cilp = false;
+
+
+        gv11b_tegra_get_clocks(dev);
+
+        return 0;
+}
+
+static int gv11b_tegra_late_probe(struct device *dev)
+{
+        /* Make gk20a power domain a subdomain of host1x */
+        nvhost_register_client_domain(dev_to_genpd(dev));
+        return 0;
+}
+
+static int gv11b_tegra_remove(struct device *dev)
+{
+        /* remove gk20a power subdomain from host1x */
+        nvhost_unregister_client_domain(dev_to_genpd(dev));
+
+        return 0;
+
+}
+
+static bool gv11b_tegra_is_railgated(struct device *dev)
+{
+        bool ret = false;
+
+        return ret;
+}
+
+static int gv11b_tegra_railgate(struct device *dev)
+{
+        return 0;
+}
+
+static int gv11b_tegra_unrailgate(struct device *dev)
+{
+        int ret = 0;
+        return ret;
+}
+
+static int gv11b_tegra_suspend(struct device *dev)
+{
+        return 0;
+}
+
+struct gk20a_platform t19x_gpu_tegra_platform = {
+        .has_syncpoints = false,
+
+        /* power management configuration */
+
+        /* ptimer src frequency in hz*/
+        .ptimer_src_freq        = 31250000,
+
+        .probe = gv11b_tegra_probe,
+        .late_probe = gv11b_tegra_late_probe,
+        .remove = gv11b_tegra_remove,
+
+        /* power management callbacks */
+        .suspend = gv11b_tegra_suspend,
+        .railgate = gv11b_tegra_railgate,
+        .unrailgate = gv11b_tegra_unrailgate,
+        .is_railgated = gv11b_tegra_is_railgated,
+
+        .busy = gk20a_tegra_busy,
+        .idle = gk20a_tegra_idle,
+
+        .dump_platform_dependencies = gk20a_tegra_debug_dump,
+
+        .default_big_page_size  = SZ_64K,
+
+};