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crypto/nx: Register and unregister VAS interface on PowerVM

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The user space uses /dev/crypto/nx-gzip interface to setup VAS
windows, create paste mapping and close windows. This patch adds
changes to create/remove this interface with VAS register/unregister
functions on PowerVM platform.

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/121ea1f4eb3004f3b8f4fe8abefaecc88b292efd.camel@linux.ibm.com
This commit is contained in:
Haren Myneni 2021-06-17 13:39:41 -07:00 committed by Michael Ellerman
parent 8c099490fd
commit 99cd49bb39
2 changed files with 9 additions and 0 deletions
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1
drivers/crypto/nx/Kconfig
View File

@ -29,6 +29,7 @@ if CRYPTO_DEV_NX_COMPRESS
config CRYPTO_DEV_NX_COMPRESS_PSERIES config CRYPTO_DEV_NX_COMPRESS_PSERIES
tristate "Compression acceleration support on pSeries platform" tristate "Compression acceleration support on pSeries platform"
depends on PPC_PSERIES && IBMVIO depends on PPC_PSERIES && IBMVIO
depends on PPC_VAS
default y default y
help help
Support for PowerPC Nest (NX) compression acceleration. This Support for PowerPC Nest (NX) compression acceleration. This

8
drivers/crypto/nx/nx-common-pseries.c
View File

@ -1231,6 +1231,12 @@ static int __init nx842_pseries_init(void)
return ret; return ret;
} }
ret = vas_register_api_pseries(THIS_MODULE, VAS_COP_TYPE_GZIP,
"nx-gzip");
if (ret)
pr_err("NX-GZIP is not supported. Returned=%d\n", ret);
return 0; return 0;
} }
@ -1241,6 +1247,8 @@ static void __exit nx842_pseries_exit(void)
struct nx842_devdata *old_devdata; struct nx842_devdata *old_devdata;
unsigned long flags; unsigned long flags;
vas_unregister_api_pseries();
crypto_unregister_alg(&nx842_pseries_alg); crypto_unregister_alg(&nx842_pseries_alg);
spin_lock_irqsave(&devdata_mutex, flags); spin_lock_irqsave(&devdata_mutex, flags);