nvidia-oot: Add aon kmd module

- This patch includes AON-KMD module as part of OOT kernel.

Bug 3583580

Change-Id: I531731136189d76ebb4d3f2880e8f46913f390f4
Signed-off-by: Akhilesh Khumbum <akhumbum@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2870990
Reviewed-by: Robert Collins <rcollins@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

drivers/platform/tegra/aon/include/aon.h

@@ -0,0 +1,164 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2015-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ */
+
+#ifndef TEGRA_AON_H
+#define TEGRA_AON_H
+
+#include <linux/cdev.h>
+#include <linux/types.h>
+
+#include <aon-regs.h>
+
+struct tegra_aon;
+
+#define NV(p) "nvidia," p
+
+enum smbox_msgs {
+	SMBOX_IVC_READY_MSG = 0xAAAA5555,
+	SMBOX_IVC_DBG_ENABLE = 0xAAAA6666,
+	SMBOX_IVC_NOTIFY = 0x0000AABB,
+};
+
+/**
+ * Declaration for struct aon_hsp that allows other structs to have a pointer
+ * to it without having to define it
+ */
+struct aon_hsp;
+
+/**
+ * struct tegra_aon - Primary OS independent tegra aon structure to hold aon
+ * cluster's and it's element's runtime info.
+ * Also encapsulates linux device aoncific info.
+ */
+struct tegra_aon {
+	/**
+	 * @dev : Pointer to AON Cluster's Linux device struct.
+	 */
+	struct device *dev;
+	/**
+	 * @hsp : Pointer to HSP instance used for communication with AON FW.
+	 */
+	struct aon_hsp *hsp;
+	/**
+	 * @regs : Stores the cpu-mapped base address of AON Cluster. Will be
+	 * used for MMIO transactions to AON elements.
+	 */
+	void __iomem *regs;
+	/**
+	 * @ipcbuf : Pointer to the ipc buffer.
+	 */
+	void *ipcbuf;
+	/**
+	 * @ipcbuf_size : Stores the ipc buffer size.
+	 */
+	size_t ipcbuf_size;
+	/**
+	 * @boot_status - u32 variable to store aon's boot status.
+	 */
+	u32 boot_status;
+	/**
+	 * @ivc_carveout_base_ss : Stores the shared semaphore index that holds
+	 * the ipc carveout base address that AON uses to configure the AST.
+	 */
+	u32 ivc_carveout_base_ss;
+	/**
+	 * @ivc_carveout_base_ss : Stores the shared semaphore index that holds
+	 * the ipc carveout size that AON uses to configure the AST.
+	 */
+	u32 ivc_carveout_size_ss;
+	u32 ivc_tx_ss;
+	u32 ivc_rx_ss;
+	/**
+	 * @ipcbuf_dma : DMA handle of the ipc buffer.
+	 */
+	dma_addr_t ipcbuf_dma;
+	/**
+	 * @ast_config_complete - Boolean variable to store aon's ast
+	 * configuration status.
+	 */
+	bool ast_config_complete;
+	/**
+	 * @reset_complete - Boolean variable to store aon's reset status.
+	 */
+	bool reset_complete;
+	/**
+	 * @load_complete - Boolean variable to store aon's fw load status.
+	 */
+	bool load_complete;
+	/**
+	 * @log_level - Stores the log level for aon cpu prints.
+	 */
+	u32 log_level;
+};
+
+/**
+ * aon_set_ast_config_status - updates the current status of ast configuration.
+ *
+ * @aon : Pointer to tegra_aon struct.
+ * @val : true or false.
+ *
+ * Return : void
+ */
+static inline void aon_set_ast_config_status(struct tegra_aon *aon, bool val)
+{
+	aon->ast_config_complete = val;
+}
+
+/**
+ * aon_set_aon_reset_status - updates the current status of aon reset.
+ *
+ * @aon : Pointer to tegra_aon struct.
+ * @val : true or false.
+ *
+ * Return : void
+ */
+static inline void aon_set_aon_reset_status(struct tegra_aon *aon, bool val)
+{
+	aon->reset_complete = val;
+}
+
+/**
+ * aon_set_load_fw_status - updates the current status of fw loading.
+ *
+ * @aon : Pointer to tegra_aon struct.
+ * @val : true or false stating fw load is complete or incomplete reaonctiveely.
+ *
+ * Return : void
+ */
+static inline void aon_set_load_fw_status(struct tegra_aon *aon, bool val)
+{
+	aon->load_complete = val;
+}
+
+static inline void __iomem *aon_reg(const struct tegra_aon *aon, u32 reg)
+{
+	if (unlikely(aon->regs == NULL)) {
+		dev_err(aon->dev, "AON register space not IOMapped");
+		return NULL;
+	}
+
+	return (aon->regs + reg);
+}
+
+#if defined(CONFIG_DEBUG_FS)
+int tegra_aon_debugfs_create(struct tegra_aon *aon);
+void tegra_aon_debugfs_remove(struct tegra_aon *aon);
+#else
+static inline int tegra_aon_debugfs_create(struct tegra_aon *aon) { return 0; }
+static inline void tegra_aon_debugfs_remove(struct tegra_aon *aon) { return; }
+#endif
+
+int tegra_aon_reset(struct tegra_aon *aon);
+int tegra_aon_mail_init(struct tegra_aon *aon);
+int tegra_aon_ipc_init(struct tegra_aon *aon);
+void tegra_aon_mail_deinit(struct tegra_aon *aon);
+int tegra_aon_ast_config(struct tegra_aon *aon);
+
+u32 tegra_aon_hsp_ss_status(const struct tegra_aon *aon, u32 ss);
+void tegra_aon_hsp_ss_set(const struct tegra_aon *aon, u32 ss, u32 bits);
+void tegra_aon_hsp_ss_clr(const struct tegra_aon *aon, u32 ss, u32 bits);
+void tegra_aon_hsp_sm_write(const struct tegra_aon *aon, u32 sm, u32 value);
+
+#endif