From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/linux/hw_random.h | 64 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 kernel/include/linux/hw_random.h (limited to 'kernel/include/linux/hw_random.h') diff --git a/kernel/include/linux/hw_random.h b/kernel/include/linux/hw_random.h new file mode 100644 index 000000000..4f7d8f4b1 --- /dev/null +++ b/kernel/include/linux/hw_random.h @@ -0,0 +1,64 @@ +/* + Hardware Random Number Generator + + Please read Documentation/hw_random.txt for details on use. + + ---------------------------------------------------------- + This software may be used and distributed according to the terms + of the GNU General Public License, incorporated herein by reference. + + */ + +#ifndef LINUX_HWRANDOM_H_ +#define LINUX_HWRANDOM_H_ + +#include +#include +#include +#include + +/** + * struct hwrng - Hardware Random Number Generator driver + * @name: Unique RNG name. + * @init: Initialization callback (can be NULL). + * @cleanup: Cleanup callback (can be NULL). + * @data_present: Callback to determine if data is available + * on the RNG. If NULL, it is assumed that + * there is always data available. *OBSOLETE* + * @data_read: Read data from the RNG device. + * Returns the number of lower random bytes in "data". + * Must not be NULL. *OBSOLETE* + * @read: New API. drivers can fill up to max bytes of data + * into the buffer. The buffer is aligned for any type. + * @priv: Private data, for use by the RNG driver. + * @quality: Estimation of true entropy in RNG's bitstream + * (per mill). + */ +struct hwrng { + const char *name; + int (*init)(struct hwrng *rng); + void (*cleanup)(struct hwrng *rng); + int (*data_present)(struct hwrng *rng, int wait); + int (*data_read)(struct hwrng *rng, u32 *data); + int (*read)(struct hwrng *rng, void *data, size_t max, bool wait); + unsigned long priv; + unsigned short quality; + + /* internal. */ + struct list_head list; + struct kref ref; + struct completion cleanup_done; +}; + +struct device; + +/** Register a new Hardware Random Number Generator driver. */ +extern int hwrng_register(struct hwrng *rng); +extern int devm_hwrng_register(struct device *dev, struct hwrng *rng); +/** Unregister a Hardware Random Number Generator driver. */ +extern void hwrng_unregister(struct hwrng *rng); +extern void devm_hwrng_unregister(struct device *dve, struct hwrng *rng); +/** Feed random bits into the pool. */ +extern void add_hwgenerator_randomness(const char *buffer, size_t count, size_t entropy); + +#endif /* LINUX_HWRANDOM_H_ */ -- cgit 1.2.3-korg