linux-kernel - [PATCH v6 15/17] powerpc/vas: Define window open ioctls API

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Date:   Tue,  8 Aug 2017 16:07:00 -0700
From:   Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        mikey@...ling.org, stewart@...ux.vnet.ibm.com, apopple@....ibm.com,
        hbabu@...ibm.com, oohall@...il.com, linuxppc-dev@...abs.org,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v6 15/17] powerpc/vas: Define window open ioctls API

Define the VAS_TX_WIN_OPEN and VAS_RX_WIN_OPEN ioctl interface. Each user
of VAS, like the NX-FTW driver in a follow-on patch, should implement
these ioctls.

Signed-off-by: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
---
 arch/powerpc/include/uapi/asm/vas.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/powerpc/include/uapi/asm/vas.h b/arch/powerpc/include/uapi/asm/vas.h
index 21249f5..e9730fb 100644
--- a/arch/powerpc/include/uapi/asm/vas.h
+++ b/arch/powerpc/include/uapi/asm/vas.h
@@ -10,6 +10,8 @@
 #ifndef _UAPI_MISC_VAS_H
 #define _UAPI_MISC_VAS_H
 
+#include <asm/ioctl.h>
+
 /*
  * Threshold Control Mode: Have paste operation fail if the number of
  * requests in receive FIFO exceeds a threshold.
@@ -22,6 +24,34 @@
 #define VAS_THRESH_FIFO_GT_QTR_FULL	2
 #define VAS_THRESH_FIFO_GT_EIGHTH_FULL	3
 
+#define VAS_FLAGS_PIN_WINDOW		0x1
+#define VAS_FLAGS_HIGH_PRI		0x2
+
+#define VAS_TX_WIN_OPEN		_IOW('v', 1, struct vas_tx_win_open_attr)
+#define VAS_RX_WIN_OPEN		_IOW('v', 2, struct vas_rx_win_open_attr)
+
+struct vas_tx_win_open_attr {
+	int16_t		version;
+	int16_t		vas_id;
+	uint32_t	rx_win_handle;
+
+	int64_t		reserved1;
+
+	int64_t		flags;
+	int64_t		reserved2;
+
+	int32_t		tc_mode;
+	int32_t		rsvd_txbuf;
+	int64_t		reserved3[6];
+};
+
+struct vas_rx_win_open_attr {
+	int16_t		version;
+	int16_t		vas_id;
+	uint32_t	rx_win_handle;	/* output field */
+	int64_t		reserved[8];
+};
+
 /*
  * Get/Set bit fields
  */
-- 
2.7.4