diff options
Diffstat (limited to 'drivers/crypto/caam/jr.c')
| -rw-r--r-- | drivers/crypto/caam/jr.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c index d258953..00e8709 100644 --- a/drivers/crypto/caam/jr.c +++ b/drivers/crypto/caam/jr.c @@ -23,6 +23,14 @@ struct jr_driver_data { static struct jr_driver_data driver_data; +static int jr_driver_probed; + +int caam_jr_driver_probed(void) +{ + return jr_driver_probed; +} +EXPORT_SYMBOL(caam_jr_driver_probed); + static int caam_reset_hw_jr(struct device *dev) { struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); @@ -119,6 +127,8 @@ static int caam_jr_remove(struct platform_device *pdev) dev_err(jrdev, "Failed to shut down job ring\n"); irq_dispose_mapping(jrpriv->irq); + jr_driver_probed--; + return ret; } @@ -281,6 +291,36 @@ struct device *caam_jr_alloc(void) EXPORT_SYMBOL(caam_jr_alloc); /** + * caam_jridx_alloc() - Alloc a specific job ring based on its index. + * + * returns : pointer to the newly allocated physical + * JobR dev can be written to if successful. + **/ +struct device *caam_jridx_alloc(int idx) +{ + struct caam_drv_private_jr *jrpriv; + struct device *dev = ERR_PTR(-ENODEV); + + spin_lock(&driver_data.jr_alloc_lock); + + if (list_empty(&driver_data.jr_list)) + goto end; + + list_for_each_entry(jrpriv, &driver_data.jr_list, list_node) { + if (jrpriv->ridx == idx) { + atomic_inc(&jrpriv->tfm_count); + dev = jrpriv->dev; + break; + } + } + +end: + spin_unlock(&driver_data.jr_alloc_lock); + return dev; +} +EXPORT_SYMBOL(caam_jridx_alloc); + +/** * caam_jr_free() - Free the Job Ring * @rdev - points to the dev that identifies the Job ring to * be released. @@ -538,6 +578,8 @@ static int caam_jr_probe(struct platform_device *pdev) atomic_set(&jrpriv->tfm_count, 0); + jr_driver_probed++; + return 0; } |