linux/drivers/gpu/drm/loongson/lsdc_probe.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2023 Loongson Technology Corporation Limited
 */

#include "lsdc_drv.h"
#include "lsdc_probe.h"

/*
 * Processor ID (implementation) values for bits 15:8 of the PRID register.
 */
#define LOONGSON_CPU_IMP_MASK …
#define LOONGSON_CPU_IMP_SHIFT …

#define LOONGARCH_CPU_IMP_LS2K1000 …
#define LOONGARCH_CPU_IMP_LS2K2000 …
#define LOONGARCH_CPU_IMP_LS3A5000 …

#define LOONGSON_CPU_MIPS_IMP_LS2K …

/*
 * Particular Revision values for bits 7:0 of the PRID register.
 */
#define LOONGSON_CPU_REV_MASK …

#define LOONGARCH_CPUCFG_PRID_REG …

/*
 * We can achieve fine-grained control with the information about the host.
 */

unsigned int loongson_cpu_get_prid(u8 *imp, u8 *rev)
{ … }