1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
4 #include <linux/kernel.h>
5 #include <linux/debugfs.h>
6 #include <linux/stringify.h>
8 #include "cc_crypto_ctx.h"
9 #include "cc_debugfs.h"
11 struct cc_debugfs_ctx {
15 #define CC_DEBUG_REG(_X) { \
16 .name = __stringify(_X),\
17 .offset = CC_REG(_X) \
21 * This is a global var for the dentry of the
22 * debugfs ccree/ dir. It is not tied down to
23 * a specific instance of ccree, hence it is
26 static struct dentry *cc_debugfs_dir;
28 static struct debugfs_reg32 debug_regs[] = {
29 { .name = "SIGNATURE" }, /* Must be 0th */
30 { .name = "VERSION" }, /* Must be 1st */
31 CC_DEBUG_REG(HOST_IRR),
32 CC_DEBUG_REG(HOST_POWER_DOWN_EN),
33 CC_DEBUG_REG(AXIM_MON_ERR),
34 CC_DEBUG_REG(DSCRPTR_QUEUE_CONTENT),
35 CC_DEBUG_REG(HOST_IMR),
36 CC_DEBUG_REG(AXIM_CFG),
37 CC_DEBUG_REG(AXIM_CACHE_PARAMS),
38 CC_DEBUG_REG(GPR_HOST),
39 CC_DEBUG_REG(AXIM_MON_COMP),
42 void __init cc_debugfs_global_init(void)
44 cc_debugfs_dir = debugfs_create_dir("ccree", NULL);
47 void __exit cc_debugfs_global_fini(void)
49 debugfs_remove(cc_debugfs_dir);
52 int cc_debugfs_init(struct cc_drvdata *drvdata)
54 struct device *dev = drvdata_to_dev(drvdata);
55 struct cc_debugfs_ctx *ctx;
56 struct debugfs_regset32 *regset;
58 debug_regs[0].offset = drvdata->sig_offset;
59 debug_regs[1].offset = drvdata->ver_offset;
61 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
65 regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
69 regset->regs = debug_regs;
70 regset->nregs = ARRAY_SIZE(debug_regs);
71 regset->base = drvdata->cc_base;
73 ctx->dir = debugfs_create_dir(drvdata->plat_dev->name, cc_debugfs_dir);
75 debugfs_create_regset32("regs", 0400, ctx->dir, regset);
76 debugfs_create_bool("coherent", 0400, ctx->dir, &drvdata->coherent);
78 drvdata->debugfs = ctx;
83 void cc_debugfs_fini(struct cc_drvdata *drvdata)
85 struct cc_debugfs_ctx *ctx = (struct cc_debugfs_ctx *)drvdata->debugfs;
87 debugfs_remove_recursive(ctx->dir);