diff options
Diffstat (limited to 'drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c')
| -rw-r--r-- | drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c index a2b67f7f8a81..709905ec4680 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c @@ -10,6 +10,7 @@ */ #include <linux/clk.h> #include <linux/crypto.h> +#include <linux/debugfs.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of.h> @@ -234,6 +235,51 @@ static struct sun4i_ss_alg_template ss_algs[] = { #endif }; +static int sun4i_ss_dbgfs_read(struct seq_file *seq, void *v) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(ss_algs); i++) { + if (!ss_algs[i].ss) + continue; + switch (ss_algs[i].type) { + case CRYPTO_ALG_TYPE_SKCIPHER: + seq_printf(seq, "%s %s reqs=%lu opti=%lu fallback=%lu tsize=%lu\n", + ss_algs[i].alg.crypto.base.cra_driver_name, + ss_algs[i].alg.crypto.base.cra_name, + ss_algs[i].stat_req, ss_algs[i].stat_opti, ss_algs[i].stat_fb, + ss_algs[i].stat_bytes); + break; + case CRYPTO_ALG_TYPE_RNG: + seq_printf(seq, "%s %s reqs=%lu tsize=%lu\n", + ss_algs[i].alg.rng.base.cra_driver_name, + ss_algs[i].alg.rng.base.cra_name, + ss_algs[i].stat_req, ss_algs[i].stat_bytes); + break; + case CRYPTO_ALG_TYPE_AHASH: + seq_printf(seq, "%s %s reqs=%lu\n", + ss_algs[i].alg.hash.halg.base.cra_driver_name, + ss_algs[i].alg.hash.halg.base.cra_name, + ss_algs[i].stat_req); + break; + } + } + return 0; +} + +static int sun4i_ss_dbgfs_open(struct inode *inode, struct file *file) +{ + return single_open(file, sun4i_ss_dbgfs_read, inode->i_private); +} + +static const struct file_operations sun4i_ss_debugfs_fops = { + .owner = THIS_MODULE, + .open = sun4i_ss_dbgfs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + /* * Power management strategy: The device is suspended unless a TFM exists for * one of the algorithms proposed by this driver. @@ -454,6 +500,12 @@ static int sun4i_ss_probe(struct platform_device *pdev) break; } } + + /* Ignore error of debugfs */ + ss->dbgfs_dir = debugfs_create_dir("sun4i-ss", NULL); + ss->dbgfs_stats = debugfs_create_file("stats", 0444, ss->dbgfs_dir, ss, + &sun4i_ss_debugfs_fops); + return 0; error_alg: i--; |