linux-kernel - [PATCH 7/7] Enabling VMX module for PPC64

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Date:	Thu, 5 Feb 2015 15:21:29 -0200
From:	"Leonidas S. Barbosa" <leosilva@...ux.vnet.ibm.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 7/7] Enabling VMX module for PPC64

This patch enables VMX module in PPC64.

Signed-off-by: Leonidas S. Barbosa <leosilva@...ux.vnet.ibm.com>
---
 drivers/crypto/Kconfig      | 12 ++++++++++++
 drivers/crypto/Makefile     |  1 +
 drivers/crypto/vmx/Kconfig  |  9 +++++++++
 drivers/crypto/vmx/Makefile | 21 +++++++++++++++++++++
 4 files changed, 43 insertions(+)
 create mode 100644 drivers/crypto/vmx/Kconfig
 create mode 100644 drivers/crypto/vmx/Makefile

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 2fb0fdf..979cbff 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -436,4 +436,16 @@ config CRYPTO_DEV_QCE
 	  hardware. To compile this driver as a module, choose M here. The
 	  module will be called qcrypto.
 
+config CRYPTO_DEV_VMX
+	bool "Support for VMX cryptographic acceleration instructions"
+	depends on PPC64
+	default n
+	help
+	  Support for VMX cryptographic acceleration instructions.
+
+if CRYPTO_DEV_VMX
+	source "drivers/crypto/vmx/Kconfig"
+endif
+
 endif # CRYPTO_HW
+
diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
index 3924f93..20a7127 100644
--- a/drivers/crypto/Makefile
+++ b/drivers/crypto/Makefile
@@ -25,3 +25,4 @@ obj-$(CONFIG_CRYPTO_DEV_TALITOS) += talitos.o
 obj-$(CONFIG_CRYPTO_DEV_UX500) += ux500/
 obj-$(CONFIG_CRYPTO_DEV_QAT) += qat/
 obj-$(CONFIG_CRYPTO_DEV_QCE) += qce/
+obj-$(CONFIG_CRYPTO_DEV_VMX) += vmx/
diff --git a/drivers/crypto/vmx/Kconfig b/drivers/crypto/vmx/Kconfig
new file mode 100644
index 0000000..6728864
--- /dev/null
+++ b/drivers/crypto/vmx/Kconfig
@@ -0,0 +1,9 @@
+config CRYPTO_DEV_VMX_ENCRYPT
+	tristate "Encryption acceleration support on P8 CPU"
+	depends on PPC64
+	default y
+	help 
+	  Support for VMX cryptographic acceleration instructions on Power8 CPU.
+	  This module supports acceleration for AES and GHASH in hardware. If you
+	  choose 'M' here, this module will be called vmx-crypto.
+	  
diff --git a/drivers/crypto/vmx/Makefile b/drivers/crypto/vmx/Makefile
new file mode 100644
index 0000000..8898ce6
--- /dev/null
+++ b/drivers/crypto/vmx/Makefile
@@ -0,0 +1,21 @@
+obj-$(CONFIG_CRYPTO_DEV_VMX_ENCRYPT) += vmx-crypto.o
+vmx-crypto-objs := vmx.o aesp8-ppc.o ghashp8-ppc.o aes.o aes_cbc.o aes_ctr.o ghash.o
+
+ifeq ($(CONFIG_PPC64),y)
+ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
+TARGET := linux-ppc64le
+else
+TARGET := linux-pcc64
+endif
+endif
+
+quiet_cmd_perl = PERL $@
+      cmd_perl = $(PERL) $(<) $(TARGET) > $(@)
+
+$(src)/aesp8-ppc.S: $(src)/aesp8-ppc.pl
+	$(call cmd,perl)
+  
+$(src)/ghashp8-ppc.S: $(src)/ghashp8-ppc.pl
+	$(call cmd,perl)
+
+.PRECIOUS: $(obj)/aesp8-ppc.S $(obj)/ghashp8-ppc.S
-- 
2.1.0

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