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Message-ID: <5933dd793bf0d0d1389877715d936cc321ee86d1.camel@linux.ibm.com>
Subject: [PATCH v4 01/16] powerpc/vas: Move VAS API to book3s common platform
From:   Haren Myneni <haren@linux.ibm.com>
To:     linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org,
        mpe@ellerman.id.au, herbert@gondor.apana.org.au, npiggin@gmail.com
Cc:     hbabu@us.ibm.com
Date:   Fri, 21 May 2021 02:28:08 -0700
In-Reply-To: <8d219c0816133a8643d650709066cf04c9c77322.camel@linux.ibm.com>
References: <8d219c0816133a8643d650709066cf04c9c77322.camel@linux.ibm.com>
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Using the same /dev/crypto/nx-gzip interface for both powerNV and
pseries. So this patch creates platforms/book3s/ and moves VAS API
to that directory. The actual functionality is not changed.

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
---
 arch/powerpc/include/asm/vas.h                    |  3 +++
 arch/powerpc/platforms/Kconfig                    |  1 +
 arch/powerpc/platforms/Makefile                   |  1 +
 arch/powerpc/platforms/book3s/Kconfig             | 15 +++++++++++++++
 arch/powerpc/platforms/book3s/Makefile            |  2 ++
 .../platforms/{powernv => book3s}/vas-api.c       |  2 +-
 arch/powerpc/platforms/powernv/Kconfig            | 14 --------------
 arch/powerpc/platforms/powernv/Makefile           |  2 +-
 8 files changed, 24 insertions(+), 16 deletions(-)
 create mode 100644 arch/powerpc/platforms/book3s/Kconfig
 create mode 100644 arch/powerpc/platforms/book3s/Makefile
 rename arch/powerpc/platforms/{powernv => book3s}/vas-api.c (99%)

diff --git a/arch/powerpc/include/asm/vas.h b/arch/powerpc/include/asm/vas.h
index e33f80b0ea81..3be76e813e2d 100644
--- a/arch/powerpc/include/asm/vas.h
+++ b/arch/powerpc/include/asm/vas.h
@@ -162,6 +162,9 @@ int vas_copy_crb(void *crb, int offset);
  */
 int vas_paste_crb(struct vas_window *win, int offset, bool re);
 
+void vas_win_paste_addr(struct vas_window *window, u64 *addr,
+			int *len);
+
 /*
  * Register / unregister coprocessor type to VAS API which will be exported
  * to user space. Applications can use this API to open / close window
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 7a5e8f4541e3..594544a65b02 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -20,6 +20,7 @@ source "arch/powerpc/platforms/embedded6xx/Kconfig"
 source "arch/powerpc/platforms/44x/Kconfig"
 source "arch/powerpc/platforms/40x/Kconfig"
 source "arch/powerpc/platforms/amigaone/Kconfig"
+source "arch/powerpc/platforms/book3s/Kconfig"
 
 config KVM_GUEST
 	bool "KVM Guest support"
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index 143d4417f6cc..0e75d7df387b 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -22,3 +22,4 @@ obj-$(CONFIG_PPC_CELL)		+= cell/
 obj-$(CONFIG_PPC_PS3)		+= ps3/
 obj-$(CONFIG_EMBEDDED6xx)	+= embedded6xx/
 obj-$(CONFIG_AMIGAONE)		+= amigaone/
+obj-$(CONFIG_PPC_BOOK3S)	+= book3s/
diff --git a/arch/powerpc/platforms/book3s/Kconfig b/arch/powerpc/platforms/book3s/Kconfig
new file mode 100644
index 000000000000..bed21449e8e5
--- /dev/null
+++ b/arch/powerpc/platforms/book3s/Kconfig
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0
+config PPC_VAS
+	bool "IBM Virtual Accelerator Switchboard (VAS)"
+	depends on (PPC_POWERNV || PPC_PSERIES) && PPC_64K_PAGES
+	default y
+	help
+	  This enables support for IBM Virtual Accelerator Switchboard (VAS).
+
+	  VAS allows accelerators in co-processors like NX-GZIP and NX-842
+	  to be accessible to kernel subsystems and user processes.
+	  VAS adapters are found in POWER9 and later based systems.
+	  The user mode NX-GZIP support is added on P9 for powerNV and on
+	  P10 for powerVM.
+
+	  If unsure, say "N".
diff --git a/arch/powerpc/platforms/book3s/Makefile b/arch/powerpc/platforms/book3s/Makefile
new file mode 100644
index 000000000000..e790f1910f61
--- /dev/null
+++ b/arch/powerpc/platforms/book3s/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_PPC_VAS)	+= vas-api.o
diff --git a/arch/powerpc/platforms/powernv/vas-api.c b/arch/powerpc/platforms/book3s/vas-api.c
similarity index 99%
rename from arch/powerpc/platforms/powernv/vas-api.c
rename to arch/powerpc/platforms/book3s/vas-api.c
index 98ed5d8c5441..cfc9d7dd65ab 100644
--- a/arch/powerpc/platforms/powernv/vas-api.c
+++ b/arch/powerpc/platforms/book3s/vas-api.c
@@ -10,9 +10,9 @@
 #include <linux/fs.h>
 #include <linux/slab.h>
 #include <linux/uaccess.h>
+#include <linux/io.h>
 #include <asm/vas.h>
 #include <uapi/asm/vas-api.h>
-#include "vas.h"
 
 /*
  * The driver creates the device node that can be used as follows:
diff --git a/arch/powerpc/platforms/powernv/Kconfig b/arch/powerpc/platforms/powernv/Kconfig
index 619b093a0657..043eefbbdd28 100644
--- a/arch/powerpc/platforms/powernv/Kconfig
+++ b/arch/powerpc/platforms/powernv/Kconfig
@@ -33,20 +33,6 @@ config PPC_MEMTRACE
 	  Enabling this option allows for runtime allocation of memory (RAM)
 	  for hardware tracing.
 
-config PPC_VAS
-	bool "IBM Virtual Accelerator Switchboard (VAS)"
-	depends on PPC_POWERNV && PPC_64K_PAGES
-	default y
-	help
-	  This enables support for IBM Virtual Accelerator Switchboard (VAS).
-
-	  VAS allows accelerators in co-processors like NX-GZIP and NX-842
-	  to be accessible to kernel subsystems and user processes.
-
-	  VAS adapters are found in POWER9 based systems.
-
-	  If unsure, say N.
-
 config SCOM_DEBUGFS
 	bool "Expose SCOM controllers via debugfs"
 	depends on DEBUG_FS
diff --git a/arch/powerpc/platforms/powernv/Makefile b/arch/powerpc/platforms/powernv/Makefile
index be2546b96816..dc7b37c23b60 100644
--- a/arch/powerpc/platforms/powernv/Makefile
+++ b/arch/powerpc/platforms/powernv/Makefile
@@ -18,7 +18,7 @@ obj-$(CONFIG_MEMORY_FAILURE)	+= opal-memory-errors.o
 obj-$(CONFIG_OPAL_PRD)	+= opal-prd.o
 obj-$(CONFIG_PERF_EVENTS) += opal-imc.o
 obj-$(CONFIG_PPC_MEMTRACE)	+= memtrace.o
-obj-$(CONFIG_PPC_VAS)	+= vas.o vas-window.o vas-debug.o vas-fault.o vas-api.o
+obj-$(CONFIG_PPC_VAS)	+= vas.o vas-window.o vas-debug.o vas-fault.o
 obj-$(CONFIG_OCXL_BASE)	+= ocxl.o
 obj-$(CONFIG_SCOM_DEBUGFS) += opal-xscom.o
 obj-$(CONFIG_PPC_SECURE_BOOT) += opal-secvar.o
-- 
2.18.2