[PATCH v5 15/17] crypto/nx: Register and unregister VAS interface on PowerVM
From: Haren Myneni <haren@linux.ibm.com>
Date: 2021-06-13 11:04:16
Also in:
linux-crypto
Subsystem:
crypto api, ibm power 842 compression accelerator, ibm power in-nest crypto acceleration, linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Herbert Xu, "David S. Miller", Haren Myneni, Breno Leitão, Nayna Jain, Paulo Flabiano Smorigo, Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
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> --- drivers/crypto/nx/Kconfig | 1 + drivers/crypto/nx/nx-common-pseries.c | 9 +++++++++ 2 files changed, 10 insertions(+)
diff --git a/drivers/crypto/nx/Kconfig b/drivers/crypto/nx/Kconfig
index 23e3d0160e67..2a35e0e785bd 100644
--- a/drivers/crypto/nx/Kconfig
+++ b/drivers/crypto/nx/Kconfig@@ -29,6 +29,7 @@ if CRYPTO_DEV_NX_COMPRESS config CRYPTO_DEV_NX_COMPRESS_PSERIES tristate "Compression acceleration support on pSeries platform" depends on PPC_PSERIES && IBMVIO + depends on PPC_VAS default y help Support for PowerPC Nest (NX) compression acceleration. This
diff --git a/drivers/crypto/nx/nx-common-pseries.c b/drivers/crypto/nx/nx-common-pseries.c
index cc8dd3072b8b..9a40fca8a9e6 100644
--- a/drivers/crypto/nx/nx-common-pseries.c
+++ b/drivers/crypto/nx/nx-common-pseries.c@@ -9,6 +9,7 @@ */ #include <asm/vio.h> +#include <asm/vas.h> #include "nx-842.h" #include "nx_csbcpb.h" /* struct nx_csbcpb */
@@ -1101,6 +1102,12 @@ static int __init nx842_pseries_init(void) 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; }
@@ -1111,6 +1118,8 @@ static void __exit nx842_pseries_exit(void) struct nx842_devdata *old_devdata; unsigned long flags; + vas_unregister_api_pseries(); + crypto_unregister_alg(&nx842_pseries_alg); spin_lock_irqsave(&devdata_mutex, flags);
--
2.18.2