281a58c832
The product signature and HW revision register have different offset on the
older HW revisions.
This fixes the problem of the driver failing sanity check on silicon
despite working on the FPGA emulation systems.
Fixes: 27b3b22dd9 ("crypto: ccree - add support for older HW revs")
Cc: stable@vger.kernel.org
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
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#include <linux/kernel.h>
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#include <linux/debugfs.h>
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#include <linux/stringify.h>
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#include "cc_driver.h"
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#include "cc_crypto_ctx.h"
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#include "cc_debugfs.h"
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struct cc_debugfs_ctx {
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struct dentry *dir;
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};
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#define CC_DEBUG_REG(_X) { \
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.name = __stringify(_X),\
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.offset = CC_REG(_X) \
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}
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/*
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* This is a global var for the dentry of the
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* debugfs ccree/ dir. It is not tied down to
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* a specific instance of ccree, hence it is
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* global.
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*/
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static struct dentry *cc_debugfs_dir;
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static struct debugfs_reg32 debug_regs[] = {
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{ .name = "SIGNATURE" }, /* Must be 0th */
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{ .name = "VERSION" }, /* Must be 1st */
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CC_DEBUG_REG(HOST_IRR),
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CC_DEBUG_REG(HOST_POWER_DOWN_EN),
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CC_DEBUG_REG(AXIM_MON_ERR),
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CC_DEBUG_REG(DSCRPTR_QUEUE_CONTENT),
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CC_DEBUG_REG(HOST_IMR),
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CC_DEBUG_REG(AXIM_CFG),
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CC_DEBUG_REG(AXIM_CACHE_PARAMS),
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CC_DEBUG_REG(GPR_HOST),
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CC_DEBUG_REG(AXIM_MON_COMP),
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};
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int __init cc_debugfs_global_init(void)
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{
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cc_debugfs_dir = debugfs_create_dir("ccree", NULL);
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return !cc_debugfs_dir;
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}
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void __exit cc_debugfs_global_fini(void)
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{
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debugfs_remove(cc_debugfs_dir);
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}
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int cc_debugfs_init(struct cc_drvdata *drvdata)
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{
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struct device *dev = drvdata_to_dev(drvdata);
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struct cc_debugfs_ctx *ctx;
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struct debugfs_regset32 *regset;
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struct dentry *file;
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debug_regs[0].offset = drvdata->sig_offset;
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debug_regs[1].offset = drvdata->ver_offset;
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ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
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if (!regset)
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return -ENOMEM;
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regset->regs = debug_regs;
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regset->nregs = ARRAY_SIZE(debug_regs);
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regset->base = drvdata->cc_base;
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ctx->dir = debugfs_create_dir(drvdata->plat_dev->name, cc_debugfs_dir);
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if (!ctx->dir)
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return -ENFILE;
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file = debugfs_create_regset32("regs", 0400, ctx->dir, regset);
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if (!file) {
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debugfs_remove(ctx->dir);
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return -ENFILE;
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}
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file = debugfs_create_bool("coherent", 0400, ctx->dir,
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&drvdata->coherent);
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if (!file) {
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debugfs_remove_recursive(ctx->dir);
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return -ENFILE;
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}
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drvdata->debugfs = ctx;
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return 0;
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}
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void cc_debugfs_fini(struct cc_drvdata *drvdata)
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{
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struct cc_debugfs_ctx *ctx = (struct cc_debugfs_ctx *)drvdata->debugfs;
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debugfs_remove_recursive(ctx->dir);
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}
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