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1// SPDX-License-Identifier: GPL-2.02/* Copyright (C) 2012-2019 ARM Limited or its affiliates. */3 4#include <linux/kernel.h>5#include <linux/debugfs.h>6#include <linux/stringify.h>7#include "cc_driver.h"8#include "cc_crypto_ctx.h"9#include "cc_debugfs.h"10 11#define CC_DEBUG_REG(_X) { \12 .name = __stringify(_X),\13 .offset = CC_REG(_X) \14 }15 16/*17 * This is a global var for the dentry of the18 * debugfs ccree/ dir. It is not tied down to19 * a specific instance of ccree, hence it is20 * global.21 */22static struct dentry *cc_debugfs_dir;23 24static struct debugfs_reg32 ver_sig_regs[] = {25 { .name = "SIGNATURE" }, /* Must be 0th */26 { .name = "VERSION" }, /* Must be 1st */27};28 29static const struct debugfs_reg32 pid_cid_regs[] = {30 CC_DEBUG_REG(PERIPHERAL_ID_0),31 CC_DEBUG_REG(PERIPHERAL_ID_1),32 CC_DEBUG_REG(PERIPHERAL_ID_2),33 CC_DEBUG_REG(PERIPHERAL_ID_3),34 CC_DEBUG_REG(PERIPHERAL_ID_4),35 CC_DEBUG_REG(COMPONENT_ID_0),36 CC_DEBUG_REG(COMPONENT_ID_1),37 CC_DEBUG_REG(COMPONENT_ID_2),38 CC_DEBUG_REG(COMPONENT_ID_3),39};40 41static const struct debugfs_reg32 debug_regs[] = {42 CC_DEBUG_REG(HOST_IRR),43 CC_DEBUG_REG(HOST_POWER_DOWN_EN),44 CC_DEBUG_REG(AXIM_MON_ERR),45 CC_DEBUG_REG(DSCRPTR_QUEUE_CONTENT),46 CC_DEBUG_REG(HOST_IMR),47 CC_DEBUG_REG(AXIM_CFG),48 CC_DEBUG_REG(AXIM_CACHE_PARAMS),49 CC_DEBUG_REG(GPR_HOST),50 CC_DEBUG_REG(AXIM_MON_COMP),51};52 53void __init cc_debugfs_global_init(void)54{55 cc_debugfs_dir = debugfs_create_dir("ccree", NULL);56}57 58void cc_debugfs_global_fini(void)59{60 debugfs_remove(cc_debugfs_dir);61}62 63int cc_debugfs_init(struct cc_drvdata *drvdata)64{65 struct device *dev = drvdata_to_dev(drvdata);66 struct debugfs_regset32 *regset, *verset;67 68 regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);69 if (!regset)70 return -ENOMEM;71 72 regset->regs = debug_regs;73 regset->nregs = ARRAY_SIZE(debug_regs);74 regset->base = drvdata->cc_base;75 regset->dev = dev;76 77 drvdata->dir = debugfs_create_dir(drvdata->plat_dev->name,78 cc_debugfs_dir);79 80 debugfs_create_regset32("regs", 0400, drvdata->dir, regset);81 debugfs_create_bool("coherent", 0400, drvdata->dir, &drvdata->coherent);82 83 verset = devm_kzalloc(dev, sizeof(*verset), GFP_KERNEL);84 /* Failing here is not important enough to fail the module load */85 if (!verset)86 return 0;87 88 if (drvdata->hw_rev <= CC_HW_REV_712) {89 ver_sig_regs[0].offset = drvdata->sig_offset;90 ver_sig_regs[1].offset = drvdata->ver_offset;91 verset->regs = ver_sig_regs;92 verset->nregs = ARRAY_SIZE(ver_sig_regs);93 } else {94 verset->regs = pid_cid_regs;95 verset->nregs = ARRAY_SIZE(pid_cid_regs);96 }97 verset->base = drvdata->cc_base;98 verset->dev = dev;99 100 debugfs_create_regset32("version", 0400, drvdata->dir, verset);101 return 0;102}103 104void cc_debugfs_fini(struct cc_drvdata *drvdata)105{106 debugfs_remove_recursive(drvdata->dir);107}108