[PATCH v3 25/49] IB/hfi1: add local mad header

[Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

Signed-off-by: Andrew Friedley <andrew.friedley-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Arthur Kepner <arthur.kepner-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Brendan Cunningham <brendan.cunningham-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Brian Welty <brian.welty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Caz Yokoyama <caz.yokoyama-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Dean Luick <dean.luick-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Easwar Hariharan <easwar.hariharan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Harish Chegondi <harish.chegondi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Ira Weiny <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Jim Snow <jim.m.snow-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: John Gregor <john.a.gregor-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Jubin John <jubin.john-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Kaike Wan <kaike.wan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Kevin Pine <kevin.pine-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Kyle Liddell <kyle.liddell-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Mitko Haralanov <mitko.haralanov-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Ravi Krishnaswamy <ravi.krishnaswamy-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Sadanand Warrier <sadanand.warrier-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Sanath Kumar <sanath.s.kumar-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Sudeep Dutt <sudeep.dutt-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Vlad Danushevsky <vladimir.danusevsky-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 drivers/infiniband/hw/hfi1/mad.h |  285 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 285 insertions(+)
 create mode 100644 drivers/infiniband/hw/hfi1/mad.h

diff --git a/drivers/infiniband/hw/hfi1/mad.h b/drivers/infiniband/hw/hfi1/mad.h
new file mode 100644
index 0000000..220be48
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/mad.h
@@ -0,0 +1,285 @@
+/*
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2015 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2015 Intel Corporation.
+ *
+ * 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.
+ *  - Neither the name of Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef _HFI1_MAD_H
+#define _HFI1_MAD_H
+
+#include <rdma/ib_pma.h>
+#define USE_PI_LED_ENABLE	1 /* use led enabled bit in struct
+				   * opa_port_states, if available */
+#include <rdma/opa_smi.h>
+#include <rdma/opa_port_info.h>
+#ifndef PI_LED_ENABLE_SUP
+#define PI_LED_ENABLE_SUP 0
+#endif
+#include "opa_compat.h"
+
+#define IB_SMP_UNSUP_VERSION    cpu_to_be16(0x0004)
+#define IB_SMP_UNSUP_METHOD     cpu_to_be16(0x0008)
+#define IB_SMP_UNSUP_METH_ATTR  cpu_to_be16(0x000C)
+#define IB_SMP_INVALID_FIELD    cpu_to_be16(0x001C)
+
+#define OPA_MAX_PREEMPT_CAP         32
+#define OPA_VLARB_LOW_ELEMENTS       0
+#define OPA_VLARB_HIGH_ELEMENTS      1
+#define OPA_VLARB_PREEMPT_ELEMENTS   2
+#define OPA_VLARB_PREEMPT_MATRIX     3
+
+#define HFI1_XMIT_RATE_UNSUPPORTED               0x0
+#define HFI1_XMIT_RATE_PICO                      0x7
+/* number of 4nsec cycles equaling 2secs */
+#define HFI1_CONG_TIMER_PSINTERVAL               0x1DCD64EC
+
+#define IB_CC_SVCTYPE_RC 0x0
+#define IB_CC_SVCTYPE_UC 0x1
+#define IB_CC_SVCTYPE_RD 0x2
+#define IB_CC_SVCTYPE_UD 0x3
+
+
+/*
+ * There should be an equivalent IB #define for the following, but
+ * I cannot find it.
+ */
+#define OPA_CC_LOG_TYPE_HFI	2
+
+struct opa_hfi1_cong_log_event_internal {
+	u32 lqpn;
+	u32 rqpn;
+	u8 sl;
+	u8 svc_type;
+	u32 rlid;
+	s64 timestamp; /* wider than 32 bits to detect 32 bit rollover */
+};
+
+struct opa_hfi1_cong_log_event {
+	u8 local_qp_cn_entry[3];
+	u8 remote_qp_number_cn_entry[3];
+	u8 sl_svc_type_cn_entry; /* 5 bits SL, 3 bits svc type */
+	u8 reserved;
+	__be32 remote_lid_cn_entry;
+	__be32 timestamp_cn_entry;
+} __packed;
+
+#define OPA_CONG_LOG_ELEMS	96
+
+struct opa_hfi1_cong_log {
+	u8 log_type;
+	u8 congestion_flags;
+	__be16 threshold_event_counter;
+	__be32 current_time_stamp;
+	u8 threshold_cong_event_map[OPA_MAX_SLS/8];
+	struct opa_hfi1_cong_log_event events[OPA_CONG_LOG_ELEMS];
+} __packed;
+
+#define IB_CC_TABLE_CAP_DEFAULT 31
+
+/* Port control flags */
+#define IB_CC_CCS_PC_SL_BASED 0x01
+
+struct opa_congestion_setting_entry {
+	u8 ccti_increase;
+	u8 reserved;
+	__be16 ccti_timer;
+	u8 trigger_threshold;
+	u8 ccti_min; /* min CCTI for cc table */
+} __packed;
+
+struct opa_congestion_setting_entry_shadow {
+	u8 ccti_increase;
+	u8 reserved;
+	u16 ccti_timer;
+	u8 trigger_threshold;
+	u8 ccti_min; /* min CCTI for cc table */
+} __packed;
+
+struct opa_congestion_setting_attr {
+	__be32 control_map;
+	__be16 port_control;
+	struct opa_congestion_setting_entry entries[OPA_MAX_SLS];
+} __packed;
+
+struct opa_congestion_setting_attr_shadow {
+	u32 control_map;
+	u16 port_control;
+	struct opa_congestion_setting_entry_shadow entries[OPA_MAX_SLS];
+} __packed;
+
+#define IB_CC_TABLE_ENTRY_INCREASE_DEFAULT 1
+#define IB_CC_TABLE_ENTRY_TIMER_DEFAULT 1
+
+/* 64 Congestion Control table entries in a single MAD */
+#define IB_CCT_ENTRIES 64
+#define IB_CCT_MIN_ENTRIES (IB_CCT_ENTRIES * 2)
+
+struct ib_cc_table_entry {
+	__be16 entry; /* shift:2, multiplier:14 */
+};
+
+struct ib_cc_table_entry_shadow {
+	u16 entry; /* shift:2, multiplier:14 */
+};
+
+struct ib_cc_table_attr {
+	__be16 ccti_limit; /* max CCTI for cc table */
+	struct ib_cc_table_entry ccti_entries[IB_CCT_ENTRIES];
+} __packed;
+
+struct ib_cc_table_attr_shadow {
+	u16 ccti_limit; /* max CCTI for cc table */
+	struct ib_cc_table_entry_shadow ccti_entries[IB_CCT_ENTRIES];
+} __packed;
+
+#define CC_TABLE_SHADOW_MAX \
+	(IB_CC_TABLE_CAP_DEFAULT * IB_CCT_ENTRIES)
+
+struct cc_table_shadow {
+	u16 ccti_limit; /* max CCTI for cc table */
+	struct ib_cc_table_entry_shadow entries[CC_TABLE_SHADOW_MAX];
+} __packed;
+
+/*
+ * struct cc_state combines the (active) per-port congestion control
+ * table, and the (active) per-SL congestion settings. cc_state data
+ * may need to be read in code paths that we want to be fast, so it
+ * is an RCU protected structure.
+ */
+struct cc_state {
+	struct rcu_head rcu;
+	struct cc_table_shadow cct;
+	struct opa_congestion_setting_attr_shadow cong_setting;
+};
+
+/*
+ * OPA BufferControl MAD
+ */
+
+/* attribute modifier macros */
+#define OPA_AM_NPORT_SHIFT	24
+#define OPA_AM_NPORT_MASK	0xff
+#define OPA_AM_NPORT_SMASK	(OPA_AM_NPORT_MASK << OPA_AM_NPORT_SHIFT)
+#define OPA_AM_NPORT(am)	(((am) >> OPA_AM_NPORT_SHIFT) & \
+					OPA_AM_NPORT_MASK)
+
+#define OPA_AM_NBLK_SHIFT	24
+#define OPA_AM_NBLK_MASK	0xff
+#define OPA_AM_NBLK_SMASK	(OPA_AM_NBLK_MASK << OPA_AM_NBLK_SHIFT)
+#define OPA_AM_NBLK(am)		(((am) >> OPA_AM_NBLK_SHIFT) & \
+					OPA_AM_NBLK_MASK)
+
+#define OPA_AM_START_BLK_SHIFT	0
+#define OPA_AM_START_BLK_MASK	0xff
+#define OPA_AM_START_BLK_SMASK	(OPA_AM_START_BLK_MASK << \
+					OPA_AM_START_BLK_SHIFT)
+#define OPA_AM_START_BLK(am)	(((am) >> OPA_AM_START_BLK_SHIFT) & \
+					OPA_AM_START_BLK_MASK)
+
+#define OPA_AM_PORTNUM_SHIFT	0
+#define OPA_AM_PORTNUM_MASK	0xff
+#define OPA_AM_PORTNUM_SMASK	(OPA_AM_PORTNUM_MASK << OPA_AM_PORTNUM_SHIFT)
+#define OPA_AM_PORTNUM(am)	(((am) >> OPA_AM_PORTNUM_SHIFT) & \
+					OPA_AM_PORTNUM_MASK)
+
+#define OPA_AM_ASYNC_SHIFT	12
+#define OPA_AM_ASYNC_MASK	0x1
+#define OPA_AM_ASYNC_SMASK	(OPA_AM_ASYNC_MASK << OPA_AM_ASYNC_SHIFT)
+#define OPA_AM_ASYNC(am)	(((am) >> OPA_AM_ASYNC_SHIFT) & \
+					OPA_AM_ASYNC_MASK)
+
+#define OPA_AM_START_SM_CFG_SHIFT	9
+#define OPA_AM_START_SM_CFG_MASK	0x1
+#define OPA_AM_START_SM_CFG_SMASK	(OPA_AM_START_SM_CFG_MASK << \
+						OPA_AM_START_SM_CFG_SHIFT)
+#define OPA_AM_START_SM_CFG(am)		(((am) >> OPA_AM_START_SM_CFG_SHIFT) \
+						& OPA_AM_START_SM_CFG_MASK)
+
+#define OPA_AM_CI_ADDR_SHIFT	19
+#define OPA_AM_CI_ADDR_MASK	0xfff
+#define OPA_AM_CI_ADDR_SMASK	(OPA_AM_CI_ADDR_MASK << OPA_CI_ADDR_SHIFT)
+#define OPA_AM_CI_ADDR(am)	(((am) >> OPA_AM_CI_ADDR_SHIFT) & \
+					OPA_AM_CI_ADDR_MASK)
+
+#define OPA_AM_CI_LEN_SHIFT	13
+#define OPA_AM_CI_LEN_MASK	0x3f
+#define OPA_AM_CI_LEN_SMASK	(OPA_AM_CI_LEN_MASK << OPA_CI_LEN_SHIFT)
+#define OPA_AM_CI_LEN(am)	(((am) >> OPA_AM_CI_LEN_SHIFT) & \
+					OPA_AM_CI_LEN_MASK)
+
+/* error info macros */
+#define OPA_EI_STATUS_SMASK	0x80
+#define OPA_EI_CODE_SMASK	0x0f
+
+struct vl_limit {
+	__be16 dedicated;
+	__be16 shared;
+};
+
+struct buffer_control {
+	__be16 reserved;
+	__be16 overall_shared_limit;
+	struct vl_limit vl[OPA_MAX_VLS];
+};
+
+struct sc2vlnt {
+	u8 vlnt[32]; /* 5 bit VL, 3 bits reserved */
+};
+
+/*
+ * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
+ * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
+ * We support 5 counters which only count the mandatory quantities.
+ */
+#define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
+#define COUNTER_MASK0_9 \
+	cpu_to_be32(COUNTER_MASK(1, 0) | \
+		    COUNTER_MASK(1, 1) | \
+		    COUNTER_MASK(1, 2) | \
+		    COUNTER_MASK(1, 3) | \
+		    COUNTER_MASK(1, 4))
+
+#endif				/* _HFI1_MAD_H */

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