Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 138 insertions, 0 deletions

diff --git a/drivers/crypto/chelsio/chcr_core.h b/drivers/crypto/chelsio/chcr_core.h
new file mode 100644
index 0000000000..5e9d568131
--- /dev/null
+++ b/drivers/crypto/chelsio/chcr_core.h
@@ -0,0 +1,138 @@
+/*
+ * This file is part of the Chelsio T6 Crypto driver for Linux.
+ *
+ * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef __CHCR_CORE_H__
+#define __CHCR_CORE_H__
+
+#include <crypto/algapi.h>
+#include <net/tls.h>
+#include "t4_hw.h"
+#include "cxgb4.h"
+#include "t4_msg.h"
+#include "cxgb4_uld.h"
+
+#define DRV_MODULE_NAME "chcr"
+#define DRV_DESC "Chelsio T6 Crypto Co-processor Driver"
+
+#define MAX_PENDING_REQ_TO_HW 20
+#define CHCR_TEST_RESPONSE_TIMEOUT 1000
+#define WQ_DETACH_TM	(msecs_to_jiffies(50))
+#define PAD_ERROR_BIT		1
+#define CHK_PAD_ERR_BIT(x)	(((x) >> PAD_ERROR_BIT) & 1)
+
+#define MAC_ERROR_BIT		0
+#define CHK_MAC_ERR_BIT(x)	(((x) >> MAC_ERROR_BIT) & 1)
+#define MAX_SALT                4
+#define CIP_WR_MIN_LEN (sizeof(struct chcr_wr) + \
+		    sizeof(struct cpl_rx_phys_dsgl) + \
+		    sizeof(struct ulptx_sgl) + 16) //IV
+
+#define HASH_WR_MIN_LEN (sizeof(struct chcr_wr) + \
+			DUMMY_BYTES + \
+		    sizeof(struct ulptx_sgl))
+struct uld_ctx;
+
+struct _key_ctx {
+	__be32 ctx_hdr;
+	u8 salt[MAX_SALT];
+	__be64 iv_to_auth;
+	unsigned char key[];
+};
+
+#define WQ_RETRY	5
+struct chcr_driver_data {
+	struct list_head act_dev;
+	struct list_head inact_dev;
+	atomic_t dev_count;
+	struct mutex drv_mutex;
+	struct uld_ctx *last_dev;
+};
+
+enum chcr_state {
+	CHCR_INIT = 0,
+	CHCR_ATTACH,
+	CHCR_DETACH,
+};
+struct chcr_wr {
+	struct fw_crypto_lookaside_wr wreq;
+	struct ulp_txpkt ulptx;
+	struct ulptx_idata sc_imm;
+	struct cpl_tx_sec_pdu sec_cpl;
+	struct _key_ctx key_ctx;
+};
+
+struct chcr_dev {
+	spinlock_t lock_chcr_dev;
+	enum chcr_state state;
+	atomic_t inflight;
+	int wqretry;
+	struct delayed_work detach_work;
+	struct completion detach_comp;
+};
+
+struct uld_ctx {
+	struct list_head entry;
+	struct cxgb4_lld_info lldi;
+	struct chcr_dev dev;
+};
+
+/*
+ *      sgl_len - calculates the size of an SGL of the given capacity
+ *      @n: the number of SGL entries
+ *      Calculates the number of flits needed for a scatter/gather list that
+ *      can hold the given number of entries.
+ */
+static inline unsigned int sgl_len(unsigned int n)
+{
+	n--;
+	return (3 * n) / 2 + (n & 1) + 2;
+}
+
+static inline void *padap(struct chcr_dev *dev)
+{
+	struct uld_ctx *u_ctx = container_of(dev, struct uld_ctx, dev);
+
+	return pci_get_drvdata(u_ctx->lldi.pdev);
+}
+
+struct uld_ctx *assign_chcr_device(void);
+int chcr_send_wr(struct sk_buff *skb);
+int start_crypto(void);
+int stop_crypto(void);
+int chcr_uld_rx_handler(void *handle, const __be64 *rsp,
+			const struct pkt_gl *pgl);
+int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
+		     int err);
+#endif /* __CHCR_CORE_H__ */