1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/crypto/ccree/cc_debugfs.c b/drivers/crypto/ccree/cc_debugfs.c
new file mode 100644
index 000000000..8f008f024
--- /dev/null
+++ b/drivers/crypto/ccree/cc_debugfs.c
@@ -0,0 +1,107 @@
+// 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 const 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 const 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 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);
+}