linux-nv-oot/drivers/gpu/drm/tegra/riscv.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2022, NVIDIA Corporation.
 */

#ifndef DRM_TEGRA_RISCV_H
#define DRM_TEGRA_RISCV_H

struct tegra_drm_riscv_descriptor {
	u32 manifest_offset;
	u32 code_offset;
	u32 code_size;
	u32 data_offset;
	u32 data_size;
};

struct tegra_drm_riscv_firmware {
	/* Firmware after it is read but not loaded */
	const struct firmware *firmware;

	/* Raw firmware data */
	dma_addr_t iova;
	dma_addr_t phys;
	void *virt;
	size_t size;
};

struct tegra_drm_riscv {
	/* User initializes */
	struct device *dev;
	void __iomem *regs;

	struct tegra_drm_riscv_firmware firmware;
	struct tegra_drm_riscv_descriptor bl_desc;
	struct tegra_drm_riscv_descriptor os_desc;
};

int tegra_drm_riscv_read_descriptors(struct tegra_drm_riscv *riscv);
int tegra_drm_riscv_boot_bootrom(struct tegra_drm_riscv *riscv, phys_addr_t image_address,
				 u32 gscid, const struct tegra_drm_riscv_descriptor *desc);
int tegra_drm_riscv_init(struct tegra_drm_riscv *riscv);
void tegra_drm_riscv_exit(struct tegra_drm_riscv *riscv);
int tegra_drm_riscv_read_firmware(struct tegra_drm_riscv *riscv, const char *firmware_name);
int tegra_drm_riscv_load_firmware(struct tegra_drm_riscv *riscv);
int tegra_drm_riscv_boot_external(struct tegra_drm_riscv *riscv);

#endif