// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2012-2019 ARM Limited or its affiliates. */ #include <linux/kernel.h> #include <linux/debugfs.h> #include <linux/stringify.h> #include "cc_driver.h" #include "cc_crypto_ctx.h" #include "cc_debugfs.h" #define CC_DEBUG_REG(_X) { \ .name = __stringify(_X),\ .offset = CC_REG(_X) \ } /* * This is a global var for the dentry of the * debugfs ccree/ dir. It is not tied down to * a specific instance of ccree, hence it is * global. */ static struct dentry *cc_debugfs_dir; static struct debugfs_reg32 ver_sig_regs[] = { { .name = "SIGNATURE" }, /* Must be 0th */ { .name = "VERSION" }, /* Must be 1st */ }; static struct debugfs_reg32 pid_cid_regs[] = { CC_DEBUG_REG(PERIPHERAL_ID_0), CC_DEBUG_REG(PERIPHERAL_ID_1), CC_DEBUG_REG(PERIPHERAL_ID_2), CC_DEBUG_REG(PERIPHERAL_ID_3), CC_DEBUG_REG(PERIPHERAL_ID_4), CC_DEBUG_REG(COMPONENT_ID_0), CC_DEBUG_REG(COMPONENT_ID_1), CC_DEBUG_REG(COMPONENT_ID_2), CC_DEBUG_REG(COMPONENT_ID_3), }; static struct debugfs_reg32 debug_regs[] = { CC_DEBUG_REG(HOST_IRR), CC_DEBUG_REG(HOST_POWER_DOWN_EN), CC_DEBUG_REG(AXIM_MON_ERR), CC_DEBUG_REG(DSCRPTR_QUEUE_CONTENT), CC_DEBUG_REG(HOST_IMR), CC_DEBUG_REG(AXIM_CFG), CC_DEBUG_REG(AXIM_CACHE_PARAMS), CC_DEBUG_REG(GPR_HOST), CC_DEBUG_REG(AXIM_MON_COMP), }; void __init cc_debugfs_global_init(void) { cc_debugfs_dir = debugfs_create_dir("ccree", NULL); } void __exit cc_debugfs_global_fini(void) { debugfs_remove(cc_debugfs_dir); } int cc_debugfs_init(struct cc_drvdata *drvdata) { struct device *dev = drvdata_to_dev(drvdata); struct debugfs_regset32 *regset, *verset; regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL); if (!regset) return -ENOMEM; regset->regs = debug_regs; regset->nregs = ARRAY_SIZE(debug_regs); regset->base = drvdata->cc_base; regset->dev = dev; drvdata->dir = debugfs_create_dir(drvdata->plat_dev->name, cc_debugfs_dir); debugfs_create_regset32("regs", 0400, drvdata->dir, regset); debugfs_create_bool("coherent", 0400, drvdata->dir, &drvdata->coherent); verset = devm_kzalloc(dev, sizeof(*verset), GFP_KERNEL); /* Failing here is not important enough to fail the module load */ if (!verset) return 0; if (drvdata->hw_rev <= CC_HW_REV_712) { ver_sig_regs[0].offset = drvdata->sig_offset; ver_sig_regs[1].offset = drvdata->ver_offset; verset->regs = ver_sig_regs; verset->nregs = ARRAY_SIZE(ver_sig_regs); } else { verset->regs = pid_cid_regs; verset->nregs = ARRAY_SIZE(pid_cid_regs); } verset->base = drvdata->cc_base; verset->dev = dev; debugfs_create_regset32("version", 0400, drvdata->dir, verset); return 0; } void cc_debugfs_fini(struct cc_drvdata *drvdata) { debugfs_remove_recursive(drvdata->dir); }