drivers/net/ethernet/mellanox/mlxsw/pci.h - linux - Git at Google

 /*
  * drivers/net/ethernet/mellanox/mlxsw/pci.h
  * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
  * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. 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.
  * 3. Neither the names of the copyright holders nor the names of its
  *    contributors may be used to endorse or promote products derived from
  *    this software without specific prior written permission.
  *
  * Alternatively, this software may be distributed under the terms of the
  * GNU General Public License ("GPL") version 2 as published by the Free
  * Software Foundation.
  *
  * 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 _MLXSW_PCI_H
 #define _MLXSW_PCI_H

 #include <linux/bitops.h>

 #include "item.h"

 #define PCI_DEVICE_ID_MELLANOX_SWITCHX2	0xc738
 #define PCI_DEVICE_ID_MELLANOX_SPECTRUM	0xcb84
 #define MLXSW_PCI_BAR0_SIZE		(1024 * 1024) /* 1MB */
 #define MLXSW_PCI_PAGE_SIZE		4096

 #define MLXSW_PCI_CIR_BASE			0x71000
 #define MLXSW_PCI_CIR_IN_PARAM_HI		MLXSW_PCI_CIR_BASE
 #define MLXSW_PCI_CIR_IN_PARAM_LO		(MLXSW_PCI_CIR_BASE + 0x04)
 #define MLXSW_PCI_CIR_IN_MODIFIER		(MLXSW_PCI_CIR_BASE + 0x08)
 #define MLXSW_PCI_CIR_OUT_PARAM_HI		(MLXSW_PCI_CIR_BASE + 0x0C)
 #define MLXSW_PCI_CIR_OUT_PARAM_LO		(MLXSW_PCI_CIR_BASE + 0x10)
 #define MLXSW_PCI_CIR_TOKEN			(MLXSW_PCI_CIR_BASE + 0x14)
 #define MLXSW_PCI_CIR_CTRL			(MLXSW_PCI_CIR_BASE + 0x18)
 #define MLXSW_PCI_CIR_CTRL_GO_BIT		BIT(23)
 #define MLXSW_PCI_CIR_CTRL_EVREQ_BIT		BIT(22)
 #define MLXSW_PCI_CIR_CTRL_OPCODE_MOD_SHIFT	12
 #define MLXSW_PCI_CIR_CTRL_STATUS_SHIFT		24
 #define MLXSW_PCI_CIR_TIMEOUT_MSECS		1000

 #define MLXSW_PCI_SW_RESET			0xF0010
 #define MLXSW_PCI_SW_RESET_RST_BIT		BIT(0)
 #define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS	5000

 #define MLXSW_PCI_DOORBELL_SDQ_OFFSET		0x000
 #define MLXSW_PCI_DOORBELL_RDQ_OFFSET		0x200
 #define MLXSW_PCI_DOORBELL_CQ_OFFSET		0x400
 #define MLXSW_PCI_DOORBELL_EQ_OFFSET		0x600
 #define MLXSW_PCI_DOORBELL_ARM_CQ_OFFSET	0x800
 #define MLXSW_PCI_DOORBELL_ARM_EQ_OFFSET	0xA00

 #define MLXSW_PCI_DOORBELL(offset, type_offset, num)	\
 	((offset) + (type_offset) + (num) * 4)

 #define MLXSW_PCI_CQS_MAX	96
 #define MLXSW_PCI_EQS_COUNT	2
 #define MLXSW_PCI_EQ_ASYNC_NUM	0
 #define MLXSW_PCI_EQ_COMP_NUM	1

 #define MLXSW_PCI_AQ_PAGES	8
 #define MLXSW_PCI_AQ_SIZE	(MLXSW_PCI_PAGE_SIZE * MLXSW_PCI_AQ_PAGES)
 #define MLXSW_PCI_WQE_SIZE	32 /* 32 bytes per element */
 #define MLXSW_PCI_CQE_SIZE	16 /* 16 bytes per element */
 #define MLXSW_PCI_EQE_SIZE	16 /* 16 bytes per element */
 #define MLXSW_PCI_WQE_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_WQE_SIZE)
 #define MLXSW_PCI_CQE_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE_SIZE)
 #define MLXSW_PCI_EQE_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_EQE_SIZE)
 #define MLXSW_PCI_EQE_UPDATE_COUNT	0x80

 #define MLXSW_PCI_WQE_SG_ENTRIES	3
 #define MLXSW_PCI_WQE_TYPE_ETHERNET	0xA

 /* pci_wqe_c
  * If set it indicates that a completion should be reported upon
  * execution of this descriptor.
  */
 MLXSW_ITEM32(pci, wqe, c, 0x00, 31, 1);

 /* pci_wqe_lp
  * Local Processing, set if packet should be processed by the local
  * switch hardware:
  * For Ethernet EMAD (Direct Route and non Direct Route) -
  * must be set if packet destination is local device
  * For InfiniBand CTL - must be set if packet destination is local device
  * Otherwise it must be clear
  * Local Process packets must not exceed the size of 2K (including payload
  * and headers).
  */
 MLXSW_ITEM32(pci, wqe, lp, 0x00, 30, 1);

 /* pci_wqe_type
  * Packet type.
  */
 MLXSW_ITEM32(pci, wqe, type, 0x00, 23, 4);

 /* pci_wqe_byte_count
  * Size of i-th scatter/gather entry, 0 if entry is unused.
  */
 MLXSW_ITEM16_INDEXED(pci, wqe, byte_count, 0x02, 0, 14, 0x02, 0x00, false);

 /* pci_wqe_address
  * Physical address of i-th scatter/gather entry.
  * Gather Entries must be 2Byte aligned.
  */
 MLXSW_ITEM64_INDEXED(pci, wqe, address, 0x08, 0, 64, 0x8, 0x0, false);

 /* pci_cqe_lag
  * Packet arrives from a port which is a LAG
  */
 MLXSW_ITEM32(pci, cqe, lag, 0x00, 23, 1);

 /* pci_cqe_system_port/lag_id
  * When lag=0: System port on which the packet was received
  * When lag=1:
  * bits [15:4] LAG ID on which the packet was received
  * bits [3:0] sub_port on which the packet was received
  */
 MLXSW_ITEM32(pci, cqe, system_port, 0x00, 0, 16);
 MLXSW_ITEM32(pci, cqe, lag_id, 0x00, 4, 12);
 MLXSW_ITEM32(pci, cqe, lag_port_index, 0x00, 0, 4);

 /* pci_cqe_wqe_counter
  * WQE count of the WQEs completed on the associated dqn
  */
 MLXSW_ITEM32(pci, cqe, wqe_counter, 0x04, 16, 16);

 /* pci_cqe_byte_count
  * Byte count of received packets including additional two
  * Reserved Bytes that are append to the end of the frame.
  * Reserved for Send CQE.
  */
 MLXSW_ITEM32(pci, cqe, byte_count, 0x04, 0, 14);

 /* pci_cqe_trap_id
  * Trap ID that captured the packet.
  */
 MLXSW_ITEM32(pci, cqe, trap_id, 0x08, 0, 8);

 /* pci_cqe_crc
  * Length include CRC. Indicates the length field includes
  * the packet's CRC.
  */
 MLXSW_ITEM32(pci, cqe, crc, 0x0C, 8, 1);

 /* pci_cqe_e
  * CQE with Error.
  */
 MLXSW_ITEM32(pci, cqe, e, 0x0C, 7, 1);

 /* pci_cqe_sr
  * 1 - Send Queue
  * 0 - Receive Queue
  */
 MLXSW_ITEM32(pci, cqe, sr, 0x0C, 6, 1);

 /* pci_cqe_dqn
  * Descriptor Queue (DQ) Number.
  */
 MLXSW_ITEM32(pci, cqe, dqn, 0x0C, 1, 5);

 /* pci_cqe_owner
  * Ownership bit.
  */
 MLXSW_ITEM32(pci, cqe, owner, 0x0C, 0, 1);

 /* pci_eqe_event_type
  * Event type.
  */
 MLXSW_ITEM32(pci, eqe, event_type, 0x0C, 24, 8);
 #define MLXSW_PCI_EQE_EVENT_TYPE_COMP	0x00
 #define MLXSW_PCI_EQE_EVENT_TYPE_CMD	0x0A

 /* pci_eqe_event_sub_type
  * Event type.
  */
 MLXSW_ITEM32(pci, eqe, event_sub_type, 0x0C, 16, 8);

 /* pci_eqe_cqn
  * Completion Queue that triggeret this EQE.
  */
 MLXSW_ITEM32(pci, eqe, cqn, 0x0C, 8, 7);

 /* pci_eqe_owner
  * Ownership bit.
  */
 MLXSW_ITEM32(pci, eqe, owner, 0x0C, 0, 1);

 /* pci_eqe_cmd_token
  * Command completion event - token
  */
 MLXSW_ITEM32(pci, eqe, cmd_token, 0x08, 16, 16);

 /* pci_eqe_cmd_status
  * Command completion event - status
  */
 MLXSW_ITEM32(pci, eqe, cmd_status, 0x08, 0, 8);

 /* pci_eqe_cmd_out_param_h
  * Command completion event - output parameter - higher part
  */
 MLXSW_ITEM32(pci, eqe, cmd_out_param_h, 0x0C, 0, 32);

 /* pci_eqe_cmd_out_param_l
  * Command completion event - output parameter - lower part
  */
 MLXSW_ITEM32(pci, eqe, cmd_out_param_l, 0x10, 0, 32);

 #endif
	/*
	* drivers/net/ethernet/mellanox/mlxsw/pci.h
	* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
	* Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. 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.
	* 3. Neither the names of the copyright holders nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* Alternatively, this software may be distributed under the terms of the
	* GNU General Public License ("GPL") version 2 as published by the Free
	* Software Foundation.
	*
	* 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 _MLXSW_PCI_H
	#define _MLXSW_PCI_H

	#include <linux/bitops.h>

	#include "item.h"

	#define PCI_DEVICE_ID_MELLANOX_SWITCHX2 0xc738
	#define PCI_DEVICE_ID_MELLANOX_SPECTRUM 0xcb84
	#define MLXSW_PCI_BAR0_SIZE (1024 * 1024) /* 1MB */
	#define MLXSW_PCI_PAGE_SIZE 4096

	#define MLXSW_PCI_CIR_BASE 0x71000
	#define MLXSW_PCI_CIR_IN_PARAM_HI MLXSW_PCI_CIR_BASE
	#define MLXSW_PCI_CIR_IN_PARAM_LO (MLXSW_PCI_CIR_BASE + 0x04)
	#define MLXSW_PCI_CIR_IN_MODIFIER (MLXSW_PCI_CIR_BASE + 0x08)
	#define MLXSW_PCI_CIR_OUT_PARAM_HI (MLXSW_PCI_CIR_BASE + 0x0C)
	#define MLXSW_PCI_CIR_OUT_PARAM_LO (MLXSW_PCI_CIR_BASE + 0x10)
	#define MLXSW_PCI_CIR_TOKEN (MLXSW_PCI_CIR_BASE + 0x14)
	#define MLXSW_PCI_CIR_CTRL (MLXSW_PCI_CIR_BASE + 0x18)
	#define MLXSW_PCI_CIR_CTRL_GO_BIT BIT(23)
	#define MLXSW_PCI_CIR_CTRL_EVREQ_BIT BIT(22)
	#define MLXSW_PCI_CIR_CTRL_OPCODE_MOD_SHIFT 12
	#define MLXSW_PCI_CIR_CTRL_STATUS_SHIFT 24
	#define MLXSW_PCI_CIR_TIMEOUT_MSECS 1000

	#define MLXSW_PCI_SW_RESET 0xF0010
	#define MLXSW_PCI_SW_RESET_RST_BIT BIT(0)
	#define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS 5000

	#define MLXSW_PCI_DOORBELL_SDQ_OFFSET 0x000
	#define MLXSW_PCI_DOORBELL_RDQ_OFFSET 0x200
	#define MLXSW_PCI_DOORBELL_CQ_OFFSET 0x400
	#define MLXSW_PCI_DOORBELL_EQ_OFFSET 0x600
	#define MLXSW_PCI_DOORBELL_ARM_CQ_OFFSET 0x800
	#define MLXSW_PCI_DOORBELL_ARM_EQ_OFFSET 0xA00

	#define MLXSW_PCI_DOORBELL(offset, type_offset, num) \
	((offset) + (type_offset) + (num) * 4)

	#define MLXSW_PCI_CQS_MAX 96
	#define MLXSW_PCI_EQS_COUNT 2
	#define MLXSW_PCI_EQ_ASYNC_NUM 0
	#define MLXSW_PCI_EQ_COMP_NUM 1

	#define MLXSW_PCI_AQ_PAGES 8
	#define MLXSW_PCI_AQ_SIZE (MLXSW_PCI_PAGE_SIZE * MLXSW_PCI_AQ_PAGES)
	#define MLXSW_PCI_WQE_SIZE 32 /* 32 bytes per element */
	#define MLXSW_PCI_CQE_SIZE 16 /* 16 bytes per element */
	#define MLXSW_PCI_EQE_SIZE 16 /* 16 bytes per element */
	#define MLXSW_PCI_WQE_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_WQE_SIZE)
	#define MLXSW_PCI_CQE_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE_SIZE)
	#define MLXSW_PCI_EQE_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_EQE_SIZE)
	#define MLXSW_PCI_EQE_UPDATE_COUNT 0x80

	#define MLXSW_PCI_WQE_SG_ENTRIES 3
	#define MLXSW_PCI_WQE_TYPE_ETHERNET 0xA

	/* pci_wqe_c
	* If set it indicates that a completion should be reported upon
	* execution of this descriptor.
	*/
	MLXSW_ITEM32(pci, wqe, c, 0x00, 31, 1);

	/* pci_wqe_lp
	* Local Processing, set if packet should be processed by the local
	* switch hardware:
	* For Ethernet EMAD (Direct Route and non Direct Route) -
	* must be set if packet destination is local device
	* For InfiniBand CTL - must be set if packet destination is local device
	* Otherwise it must be clear
	* Local Process packets must not exceed the size of 2K (including payload
	* and headers).
	*/
	MLXSW_ITEM32(pci, wqe, lp, 0x00, 30, 1);

	/* pci_wqe_type
	* Packet type.
	*/
	MLXSW_ITEM32(pci, wqe, type, 0x00, 23, 4);

	/* pci_wqe_byte_count
	* Size of i-th scatter/gather entry, 0 if entry is unused.
	*/
	MLXSW_ITEM16_INDEXED(pci, wqe, byte_count, 0x02, 0, 14, 0x02, 0x00, false);

	/* pci_wqe_address
	* Physical address of i-th scatter/gather entry.
	* Gather Entries must be 2Byte aligned.
	*/
	MLXSW_ITEM64_INDEXED(pci, wqe, address, 0x08, 0, 64, 0x8, 0x0, false);

	/* pci_cqe_lag
	* Packet arrives from a port which is a LAG
	*/
	MLXSW_ITEM32(pci, cqe, lag, 0x00, 23, 1);

	/* pci_cqe_system_port/lag_id
	* When lag=0: System port on which the packet was received
	* When lag=1:
	* bits [15:4] LAG ID on which the packet was received
	* bits [3:0] sub_port on which the packet was received
	*/
	MLXSW_ITEM32(pci, cqe, system_port, 0x00, 0, 16);
	MLXSW_ITEM32(pci, cqe, lag_id, 0x00, 4, 12);
	MLXSW_ITEM32(pci, cqe, lag_port_index, 0x00, 0, 4);

	/* pci_cqe_wqe_counter
	* WQE count of the WQEs completed on the associated dqn
	*/
	MLXSW_ITEM32(pci, cqe, wqe_counter, 0x04, 16, 16);

	/* pci_cqe_byte_count
	* Byte count of received packets including additional two
	* Reserved Bytes that are append to the end of the frame.
	* Reserved for Send CQE.
	*/
	MLXSW_ITEM32(pci, cqe, byte_count, 0x04, 0, 14);

	/* pci_cqe_trap_id
	* Trap ID that captured the packet.
	*/
	MLXSW_ITEM32(pci, cqe, trap_id, 0x08, 0, 8);

	/* pci_cqe_crc
	* Length include CRC. Indicates the length field includes
	* the packet's CRC.
	*/
	MLXSW_ITEM32(pci, cqe, crc, 0x0C, 8, 1);

	/* pci_cqe_e
	* CQE with Error.
	*/
	MLXSW_ITEM32(pci, cqe, e, 0x0C, 7, 1);

	/* pci_cqe_sr
	* 1 - Send Queue
	* 0 - Receive Queue
	*/
	MLXSW_ITEM32(pci, cqe, sr, 0x0C, 6, 1);

	/* pci_cqe_dqn
	* Descriptor Queue (DQ) Number.
	*/
	MLXSW_ITEM32(pci, cqe, dqn, 0x0C, 1, 5);

	/* pci_cqe_owner
	* Ownership bit.
	*/
	MLXSW_ITEM32(pci, cqe, owner, 0x0C, 0, 1);

	/* pci_eqe_event_type
	* Event type.
	*/
	MLXSW_ITEM32(pci, eqe, event_type, 0x0C, 24, 8);
	#define MLXSW_PCI_EQE_EVENT_TYPE_COMP 0x00
	#define MLXSW_PCI_EQE_EVENT_TYPE_CMD 0x0A

	/* pci_eqe_event_sub_type
	* Event type.
	*/
	MLXSW_ITEM32(pci, eqe, event_sub_type, 0x0C, 16, 8);

	/* pci_eqe_cqn
	* Completion Queue that triggeret this EQE.
	*/
	MLXSW_ITEM32(pci, eqe, cqn, 0x0C, 8, 7);

	/* pci_eqe_owner
	* Ownership bit.
	*/
	MLXSW_ITEM32(pci, eqe, owner, 0x0C, 0, 1);

	/* pci_eqe_cmd_token
	* Command completion event - token
	*/
	MLXSW_ITEM32(pci, eqe, cmd_token, 0x08, 16, 16);

	/* pci_eqe_cmd_status
	* Command completion event - status
	*/
	MLXSW_ITEM32(pci, eqe, cmd_status, 0x08, 0, 8);

	/* pci_eqe_cmd_out_param_h
	* Command completion event - output parameter - higher part
	*/
	MLXSW_ITEM32(pci, eqe, cmd_out_param_h, 0x0C, 0, 32);

	/* pci_eqe_cmd_out_param_l
	* Command completion event - output parameter - lower part
	*/
	MLXSW_ITEM32(pci, eqe, cmd_out_param_l, 0x10, 0, 32);

	#endif