1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /* Copyright (C) 2012-2019 ARM Limited or its affiliates. */
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun #include <linux/kernel.h>
5*4882a593Smuzhiyun #include <linux/debugfs.h>
6*4882a593Smuzhiyun #include <linux/stringify.h>
7*4882a593Smuzhiyun #include "cc_driver.h"
8*4882a593Smuzhiyun #include "cc_crypto_ctx.h"
9*4882a593Smuzhiyun #include "cc_debugfs.h"
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #define CC_DEBUG_REG(_X) { \
12*4882a593Smuzhiyun .name = __stringify(_X),\
13*4882a593Smuzhiyun .offset = CC_REG(_X) \
14*4882a593Smuzhiyun }
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun /*
17*4882a593Smuzhiyun * This is a global var for the dentry of the
18*4882a593Smuzhiyun * debugfs ccree/ dir. It is not tied down to
19*4882a593Smuzhiyun * a specific instance of ccree, hence it is
20*4882a593Smuzhiyun * global.
21*4882a593Smuzhiyun */
22*4882a593Smuzhiyun static struct dentry *cc_debugfs_dir;
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun static struct debugfs_reg32 ver_sig_regs[] = {
25*4882a593Smuzhiyun { .name = "SIGNATURE" }, /* Must be 0th */
26*4882a593Smuzhiyun { .name = "VERSION" }, /* Must be 1st */
27*4882a593Smuzhiyun };
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun static const struct debugfs_reg32 pid_cid_regs[] = {
30*4882a593Smuzhiyun CC_DEBUG_REG(PERIPHERAL_ID_0),
31*4882a593Smuzhiyun CC_DEBUG_REG(PERIPHERAL_ID_1),
32*4882a593Smuzhiyun CC_DEBUG_REG(PERIPHERAL_ID_2),
33*4882a593Smuzhiyun CC_DEBUG_REG(PERIPHERAL_ID_3),
34*4882a593Smuzhiyun CC_DEBUG_REG(PERIPHERAL_ID_4),
35*4882a593Smuzhiyun CC_DEBUG_REG(COMPONENT_ID_0),
36*4882a593Smuzhiyun CC_DEBUG_REG(COMPONENT_ID_1),
37*4882a593Smuzhiyun CC_DEBUG_REG(COMPONENT_ID_2),
38*4882a593Smuzhiyun CC_DEBUG_REG(COMPONENT_ID_3),
39*4882a593Smuzhiyun };
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun static const struct debugfs_reg32 debug_regs[] = {
42*4882a593Smuzhiyun CC_DEBUG_REG(HOST_IRR),
43*4882a593Smuzhiyun CC_DEBUG_REG(HOST_POWER_DOWN_EN),
44*4882a593Smuzhiyun CC_DEBUG_REG(AXIM_MON_ERR),
45*4882a593Smuzhiyun CC_DEBUG_REG(DSCRPTR_QUEUE_CONTENT),
46*4882a593Smuzhiyun CC_DEBUG_REG(HOST_IMR),
47*4882a593Smuzhiyun CC_DEBUG_REG(AXIM_CFG),
48*4882a593Smuzhiyun CC_DEBUG_REG(AXIM_CACHE_PARAMS),
49*4882a593Smuzhiyun CC_DEBUG_REG(GPR_HOST),
50*4882a593Smuzhiyun CC_DEBUG_REG(AXIM_MON_COMP),
51*4882a593Smuzhiyun };
52*4882a593Smuzhiyun
cc_debugfs_global_init(void)53*4882a593Smuzhiyun void __init cc_debugfs_global_init(void)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun cc_debugfs_dir = debugfs_create_dir("ccree", NULL);
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
cc_debugfs_global_fini(void)58*4882a593Smuzhiyun void __exit cc_debugfs_global_fini(void)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun debugfs_remove(cc_debugfs_dir);
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun
cc_debugfs_init(struct cc_drvdata * drvdata)63*4882a593Smuzhiyun int cc_debugfs_init(struct cc_drvdata *drvdata)
64*4882a593Smuzhiyun {
65*4882a593Smuzhiyun struct device *dev = drvdata_to_dev(drvdata);
66*4882a593Smuzhiyun struct debugfs_regset32 *regset, *verset;
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
69*4882a593Smuzhiyun if (!regset)
70*4882a593Smuzhiyun return -ENOMEM;
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun regset->regs = debug_regs;
73*4882a593Smuzhiyun regset->nregs = ARRAY_SIZE(debug_regs);
74*4882a593Smuzhiyun regset->base = drvdata->cc_base;
75*4882a593Smuzhiyun regset->dev = dev;
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun drvdata->dir = debugfs_create_dir(drvdata->plat_dev->name,
78*4882a593Smuzhiyun cc_debugfs_dir);
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun debugfs_create_regset32("regs", 0400, drvdata->dir, regset);
81*4882a593Smuzhiyun debugfs_create_bool("coherent", 0400, drvdata->dir, &drvdata->coherent);
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun verset = devm_kzalloc(dev, sizeof(*verset), GFP_KERNEL);
84*4882a593Smuzhiyun /* Failing here is not important enough to fail the module load */
85*4882a593Smuzhiyun if (!verset)
86*4882a593Smuzhiyun return 0;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun if (drvdata->hw_rev <= CC_HW_REV_712) {
89*4882a593Smuzhiyun ver_sig_regs[0].offset = drvdata->sig_offset;
90*4882a593Smuzhiyun ver_sig_regs[1].offset = drvdata->ver_offset;
91*4882a593Smuzhiyun verset->regs = ver_sig_regs;
92*4882a593Smuzhiyun verset->nregs = ARRAY_SIZE(ver_sig_regs);
93*4882a593Smuzhiyun } else {
94*4882a593Smuzhiyun verset->regs = pid_cid_regs;
95*4882a593Smuzhiyun verset->nregs = ARRAY_SIZE(pid_cid_regs);
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun verset->base = drvdata->cc_base;
98*4882a593Smuzhiyun verset->dev = dev;
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun debugfs_create_regset32("version", 0400, drvdata->dir, verset);
101*4882a593Smuzhiyun return 0;
102*4882a593Smuzhiyun }
103*4882a593Smuzhiyun
cc_debugfs_fini(struct cc_drvdata * drvdata)104*4882a593Smuzhiyun void cc_debugfs_fini(struct cc_drvdata *drvdata)
105*4882a593Smuzhiyun {
106*4882a593Smuzhiyun debugfs_remove_recursive(drvdata->dir);
107*4882a593Smuzhiyun }
108