6d01d8511d
hwrng: ks-sa - Add minimum sleep time before ready-polling
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Current polling timeout is 25 us. The hardware is currently configured to
harvest the entropy for 81920 us. This leads to timeouts even during
blocking read (wait=1).
Log snippet:
[ 5.727589] [<c040ffcc>] (ks_sa_rng_probe) from [<c04181e8>] (platform_drv_probe+0x58/0xb4)
...
[ 5.727805] hwrng: no data available
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[ 13.157016] random: systemd: uninitialized urandom read (16 bytes read)
[ 13.157033] systemd[1]: Initializing machine ID from random generator.
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[ 15.848770] random: fast init done
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[ 15.848807] random: crng init done
After the patch:
[ 6.223534] random: systemd: uninitialized urandom read (16 bytes read)
[ 6.223551] systemd[1]: Initializing machine ID from random generator.
...
[ 6.876075] random: fast init done
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[ 6.954200] random: systemd: uninitialized urandom read (16 bytes read)
[ 6.955244] random: systemd: uninitialized urandom read (16 bytes read)
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[ 7.121948] random: crng init done
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-11-17 08:37:29 +08:00
871d030d59
hwrng: ks-sa - use devm_platform_ioremap_resource() to simplify code
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Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-10-26 02:09:54 +11:00
d1569349d7
hwrng: ka-sa - fix __iomem on registers
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Add __ioemm attribute to reg_rng to fix the following
sparse warnings:
drivers/char/hw_random/ks-sa-rng.c:102:9: warning: incorrect type in argument 2 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:102:9: expected void volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:102:9: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:104:9: warning: incorrect type in argument 2 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:104:9: expected void volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:104:9: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:113:9: warning: incorrect type in argument 2 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:113:9: expected void volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:113:9: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:116:9: warning: incorrect type in argument 2 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:116:9: expected void volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:116:9: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:119:17: warning: incorrect type in argument 1 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:119:17: expected void const volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:119:17: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:121:9: warning: incorrect type in argument 2 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:121:9: expected void volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:121:9: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:132:9: warning: incorrect type in argument 2 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:132:9: expected void volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:132:9: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:143:19: warning: incorrect type in argument 1 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:143:19: expected void const volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:143:19: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:144:19: warning: incorrect type in argument 1 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:144:19: expected void const volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:144:19: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:146:9: warning: incorrect type in argument 2 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:146:9: expected void volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:146:9: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:160:25: warning: incorrect type in argument 1 (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:160:25: expected void const volatile [noderef] <asn:2> *addr
drivers/char/hw_random/ks-sa-rng.c:160:25: got unsigned int *
drivers/char/hw_random/ks-sa-rng.c:194:28: warning: incorrect type in assignment (different address spaces)
drivers/char/hw_random/ks-sa-rng.c:194:28: expected struct trng_regs *reg_rng
drivers/char/hw_random/ks-sa-rng.c:194:28: got void [noderef] <asn:2> *
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-10-26 02:09:52 +11:00
1802d0beec
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
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Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation this program is
distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 655 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:41 -07:00
eb428ee0e3
hwrng: ks-sa - add hw_random driver
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Keystone Security Accelerator module has a hardware random generator
sub-module. This commit adds the driver for this sub-module.
Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
[t-kristo@ti.com: dropped one unnecessary dev_err message]
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-23 23:40:08 +08:00
Alexander Sverdlin