コード例 #1
0
static unsigned int __sysmmu_version(struct sysmmu_drvdata *drvdata,
					int idx, unsigned int *minor)
{
	unsigned int major;

	major = readl(drvdata->sfrbases[idx] + REG_MMU_VERSION);

	if ((MMU_MAJ_VER(major) == 0) || (MMU_MAJ_VER(major) > 3)) {
		/* register MMU_VERSION is used for special purpose */
		if (drvdata->ver.major == 0) {
			/* min ver. is not important for System MMU 1 and 2 */
			major = 1;
		} else {
			if (minor)
				*minor = drvdata->ver.minor;
			major = drvdata->ver.major;
		}

		return major;
	}

	if (minor)
		*minor = MMU_MIN_VER(major);

	major = MMU_MAJ_VER(major);

	return major;
}
コード例 #2
0
ファイル: exynos-iommu.c プロジェクト: nemumu/linux
static void __sysmmu_init_config(struct sysmmu_drvdata *data)
{
    unsigned int cfg = CFG_LRU | CFG_QOS(15);
    unsigned int ver;

    ver = __raw_sysmmu_version(data);
    if (MMU_MAJ_VER(ver) == 3) {
        if (MMU_MIN_VER(ver) >= 2) {
            cfg |= CFG_FLPDCACHE;
            if (MMU_MIN_VER(ver) == 3) {
                cfg |= CFG_ACGEN;
                cfg &= ~CFG_LRU;
            } else {
                cfg |= CFG_SYSSEL;
            }
        }
    }

    __raw_writel(cfg, data->sfrbase + REG_MMU_CFG);
}