diff options
Diffstat (limited to 'drivers/crypto/caam/secvio.h')
-rw-r--r-- | drivers/crypto/caam/secvio.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/crypto/caam/secvio.h b/drivers/crypto/caam/secvio.h new file mode 100644 index 000000000000..2f7d5f6270d8 --- /dev/null +++ b/drivers/crypto/caam/secvio.h @@ -0,0 +1,64 @@ + +/* + * CAAM Security Violation Handler + * Copyright (c) 2012 Freescale Semiconductor, Inc., All Rights Reserved + */ + +#ifndef SECVIO_H +#define SECVIO_H + +#include "snvsregs.h" + + +/* + * Defines the published interfaces to install/remove application-specified + * handlers for catching violations + */ + +#define MAX_SECVIO_SOURCES 6 + +/* these are the untranslated causes */ +enum secvio_cause { + SECVIO_CAUSE_SOURCE_0, + SECVIO_CAUSE_SOURCE_1, + SECVIO_CAUSE_SOURCE_2, + SECVIO_CAUSE_SOURCE_3, + SECVIO_CAUSE_SOURCE_4, + SECVIO_CAUSE_SOURCE_5 +}; + +/* These are common "recommended" cause definitions for most devices */ +#define SECVIO_CAUSE_CAAM_VIOLATION SECVIO_CAUSE_SOURCE_0 +#define SECVIO_CAUSE JTAG_ALARM SECVIO_CAUSE_SOURCE_1 +#define SECVIO_CAUSE_WATCHDOG SECVIO_CAUSE_SOURCE_2 +#define SECVIO_CAUSE_EXTERNAL_BOOT SECVIO_CAUSE_SOURCE_4 +#define SECVIO_CAUSE_TAMPER_DETECT SECVIO_CAUSE_SOURCE_5 + +int caam_secvio_install_handler(struct device *dev, enum secvio_cause cause, + void (*handler)(struct device *dev, u32 cause, + void *ext), + u8 *cause_description, void *ext); +int caam_secvio_remove_handler(struct device *dev, enum secvio_cause cause); + +/* + * Private data definitions for the secvio "driver" + */ + +struct secvio_int_src { + const u8 *intname; /* Points to a descriptive name for source */ + void *ext; /* Extended data to pass to the handler */ + void (*handler)(struct device *dev, u32 cause, void *ext); +}; + +struct caam_drv_private_secvio { + struct device *parentdev; /* points back to the controller */ + spinlock_t svlock ____cacheline_aligned; + struct tasklet_struct irqtask[NR_CPUS]; + struct snvs_full __iomem *svregs; /* both HP and LP domains */ + + /* Registered handlers for each violation */ + struct secvio_int_src intsrc[MAX_SECVIO_SOURCES]; + +}; + +#endif /* SECVIO_H */ |