diff options
Diffstat (limited to 'drivers/crypto/ccree/cc_debugfs.c')
| -rw-r--r-- | drivers/crypto/ccree/cc_debugfs.c | 107 |
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 0000000000..8f008f024f --- /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); +} |