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/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
#ifndef _MLXSW_PCI_HW_H
#define _MLXSW_PCI_HW_H
#include <linux/bitops.h>
#include "item.h"
#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 20000
#define MLXSW_PCI_SW_RESET_WAIT_MSECS 100
#define MLXSW_PCI_FW_READY 0xA1844
#define MLXSW_PCI_FW_READY_MASK 0xFFFF
#define MLXSW_PCI_FW_READY_MAGIC 0x5E
#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_CQE01_SIZE 16 /* 16 bytes per element */
#define MLXSW_PCI_CQE2_SIZE 32 /* 32 bytes per element */
#define MLXSW_PCI_CQE_SIZE_MAX MLXSW_PCI_CQE2_SIZE
#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_CQE01_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE01_SIZE)
#define MLXSW_PCI_CQE2_COUNT (MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE2_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);
enum mlxsw_pci_cqe_v {
MLXSW_PCI_CQE_V0,
MLXSW_PCI_CQE_V1,
MLXSW_PCI_CQE_V2,
};
#define mlxsw_pci_cqe_item_helpers(name, v0, v1, v2) \
static inline u32 mlxsw_pci_cqe_##name##_get(enum mlxsw_pci_cqe_v v, char *cqe) \
{ \
switch (v) { \
default: \
case MLXSW_PCI_CQE_V0: \
return mlxsw_pci_cqe##v0##_##name##_get(cqe); \
case MLXSW_PCI_CQE_V1: \
return mlxsw_pci_cqe##v1##_##name##_get(cqe); \
case MLXSW_PCI_CQE_V2: \
return mlxsw_pci_cqe##v2##_##name##_get(cqe); \
} \
} \
static inline void mlxsw_pci_cqe_##name##_set(enum mlxsw_pci_cqe_v v, \
char *cqe, u32 val) \
{ \
switch (v) { \
default: \
case MLXSW_PCI_CQE_V0: \
mlxsw_pci_cqe##v0##_##name##_set(cqe, val); \
break; \
case MLXSW_PCI_CQE_V1: \
mlxsw_pci_cqe##v1##_##name##_set(cqe, val); \
break; \
case MLXSW_PCI_CQE_V2: \
mlxsw_pci_cqe##v2##_##name##_set(cqe, val); \
break; \
} \
}
/* pci_cqe_lag
* Packet arrives from a port which is a LAG
*/
MLXSW_ITEM32(pci, cqe0, lag, 0x00, 23, 1);
MLXSW_ITEM32(pci, cqe12, lag, 0x00, 24, 1);
mlxsw_pci_cqe_item_helpers(lag, 0, 12, 12);
/* 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, cqe0, lag_id, 0x00, 4, 12);
MLXSW_ITEM32(pci, cqe12, lag_id, 0x00, 0, 16);
mlxsw_pci_cqe_item_helpers(lag_id, 0, 12, 12);
MLXSW_ITEM32(pci, cqe0, lag_subport, 0x00, 0, 4);
MLXSW_ITEM32(pci, cqe12, lag_subport, 0x00, 16, 8);
mlxsw_pci_cqe_item_helpers(lag_subport, 0, 12, 12);
/* 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, 9);
/* pci_cqe_crc
* Length include CRC. Indicates the length field includes
* the packet's CRC.
*/
MLXSW_ITEM32(pci, cqe0, crc, 0x0C, 8, 1);
MLXSW_ITEM32(pci, cqe12, crc, 0x0C, 9, 1);
mlxsw_pci_cqe_item_helpers(crc, 0, 12, 12);
/* pci_cqe_e
* CQE with Error.
*/
MLXSW_ITEM32(pci, cqe0, e, 0x0C, 7, 1);
MLXSW_ITEM32(pci, cqe12, e, 0x00, 27, 1);
mlxsw_pci_cqe_item_helpers(e, 0, 12, 12);
/* pci_cqe_sr
* 1 - Send Queue
* 0 - Receive Queue
*/
MLXSW_ITEM32(pci, cqe0, sr, 0x0C, 6, 1);
MLXSW_ITEM32(pci, cqe12, sr, 0x00, 26, 1);
mlxsw_pci_cqe_item_helpers(sr, 0, 12, 12);
/* pci_cqe_dqn
* Descriptor Queue (DQ) Number.
*/
MLXSW_ITEM32(pci, cqe0, dqn, 0x0C, 1, 5);
MLXSW_ITEM32(pci, cqe12, dqn, 0x0C, 1, 6);
mlxsw_pci_cqe_item_helpers(dqn, 0, 12, 12);
/* pci_cqe_owner
* Ownership bit.
*/
MLXSW_ITEM32(pci, cqe01, owner, 0x0C, 0, 1);
MLXSW_ITEM32(pci, cqe2, owner, 0x1C, 0, 1);
mlxsw_pci_cqe_item_helpers(owner, 01, 01, 2);
/* 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, 0x00, 16, 16);
/* pci_eqe_cmd_status
* Command completion event - status
*/
MLXSW_ITEM32(pci, eqe, cmd_status, 0x00, 0, 8);
/* pci_eqe_cmd_out_param_h
* Command completion event - output parameter - higher part
*/
MLXSW_ITEM32(pci, eqe, cmd_out_param_h, 0x04, 0, 32);
/* pci_eqe_cmd_out_param_l
* Command completion event - output parameter - lower part
*/
MLXSW_ITEM32(pci, eqe, cmd_out_param_l, 0x08, 0, 32);
#endif
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