Open source GPL/LGPL release

drivers/gpu/nvgpu/os/linux/os_linux.h

@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 2017-2021, 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/>.
+ */
+
+#ifndef NVGPU_OS_LINUX_H
+#define NVGPU_OS_LINUX_H
+
+#include <linux/iommu.h>
+#include <linux/notifier.h>
+#include <linux/version.h>
+
+#include <nvgpu/gk20a.h>
+#include <nvgpu/interrupts.h>
+
+#include "cde.h"
+#include "sched.h"
+
+struct nvgpu_os_linux_ops {
+	struct {
+		void (*get_program_numbers)(struct gk20a *g,
+					    u32 block_height_log2,
+					    u32 shader_parameter,
+					    int *hprog, int *vprog);
+		bool (*need_scatter_buffer)(struct gk20a *g);
+		int (*populate_scatter_buffer)(struct gk20a *g,
+					       struct sg_table *sgt,
+					       size_t surface_size,
+					       void *scatter_buffer_ptr,
+					       size_t scatter_buffer_size);
+	} cde;
+
+	struct {
+		int (*init_debugfs)(struct gk20a *g);
+	} clk;
+
+	struct {
+		int (*init_debugfs)(struct gk20a *g);
+	} therm;
+
+	struct {
+		int (*init_debugfs)(struct gk20a *g);
+	} fecs_trace;
+
+	struct {
+		int (*init_debugfs)(struct gk20a *g);
+	} volt;
+
+	struct {
+		int (*init_debugfs)(struct gk20a *g);
+	} s_param;
+};
+
+struct dgpu_thermal_alert {
+        struct workqueue_struct *workqueue;
+        struct work_struct work;
+        u32 therm_alert_irq;
+        u32 event_delay;
+};
+
+struct nvgpu_os_linux {
+	struct gk20a g;
+	struct device *dev;
+	struct dgpu_thermal_alert thermal_alert;
+	struct nvgpu_interrupts interrupts;
+
+	struct nvgpu_list_node class_list_head;
+	struct nvgpu_list_node cdev_list_head;
+	u32 power_cdevs;
+	u32 num_cdevs;
+	bool dev_nodes_created;
+	bool cdev_list_init_done;
+
+	dev_t power_cdev_region;
+	dev_t cdev_region;
+
+	/* see gk20a_ctrl_priv */
+	struct nvgpu_list_node ctrl_privs;
+	/* guards modifications to the list and its contents */
+	struct nvgpu_mutex ctrl_privs_lock;
+
+	struct devfreq *devfreq;
+
+	struct device_dma_parameters dma_parms;
+
+	atomic_t nonstall_ops;
+
+	struct work_struct nonstall_fn_work;
+	struct workqueue_struct *nonstall_work_queue;
+
+	struct resource *reg_mem;
+	struct resource *bar1_mem;
+
+	struct nvgpu_os_linux_ops ops;
+
+	struct notifier_block nvgpu_reboot_nb;
+
+#ifdef CONFIG_DEBUG_FS
+	struct dentry *debugfs;
+	struct dentry *debugfs_alias;
+
+	struct dentry *debugfs_ltc_enabled;
+	struct dentry *debugfs_timeouts_enabled;
+	struct dentry *debugfs_disable_bigpage;
+	struct dentry *debugfs_dbg_tsg_timeslice_max_us;
+
+	struct dentry *debugfs_runlist_interleave;
+	struct dentry *debugfs_allocators;
+	struct dentry *debugfs_xve;
+	struct dentry *debugfs_kmem;
+	struct dentry *debugfs_hal;
+	struct dentry *debugfs_ltc;
+
+	struct dentry *debugfs_dump_ctxsw_stats;
+#endif
+	struct dev_ext_attribute *ecc_attrs;
+
+	struct gk20a_cde_app cde_app;
+
+	struct rw_semaphore busy_lock;
+
+	struct nvgpu_mutex dmabuf_priv_list_lock;
+	struct nvgpu_list_node dmabuf_priv_list;
+
+	bool init_done;
+
+	/** Debugfs knob for forcing syncpt support off in runtime. */
+	bool disable_syncpoints;
+	bool enable_platform_dbg;
+};
+
+static inline struct nvgpu_os_linux *nvgpu_os_linux_from_gk20a(struct gk20a *g)
+{
+	return container_of(g, struct nvgpu_os_linux, g);
+}
+
+static inline struct device *dev_from_gk20a(struct gk20a *g)
+{
+	return nvgpu_os_linux_from_gk20a(g)->dev;
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
+#define totalram_size_in_mb (totalram_pages() >> (10 - (PAGE_SHIFT - 10)))
+#else
+#define totalram_size_in_mb (totalram_pages >> (10 - (PAGE_SHIFT - 10)))
+#endif
+
+#endif