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sys/dev/mana/hw_channel.h
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/*- | |||||
* SPDX-License-Identifier: BSD-2-Clause | |||||
* | |||||
* Copyright (c) 2021 Microsoft Corp. | |||||
* All rights reserved. | |||||
* | |||||
* 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. | |||||
* | |||||
* 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. | |||||
* | |||||
* $FreeBSD$ | |||||
* | |||||
*/ | |||||
#ifndef _HW_CHANNEL_H | |||||
#define _HW_CHANNEL_H | |||||
#include <sys/sema.h> | |||||
#define DEFAULT_LOG2_THROTTLING_FOR_ERROR_EQ 4 | |||||
#define HW_CHANNEL_MAX_REQUEST_SIZE 0x1000 | |||||
#define HW_CHANNEL_MAX_RESPONSE_SIZE 0x1000 | |||||
#define HW_CHANNEL_VF_BOOTSTRAP_QUEUE_DEPTH 1 | |||||
#define HWC_INIT_DATA_CQID 1 | |||||
#define HWC_INIT_DATA_RQID 2 | |||||
#define HWC_INIT_DATA_SQID 3 | |||||
#define HWC_INIT_DATA_QUEUE_DEPTH 4 | |||||
#define HWC_INIT_DATA_MAX_REQUEST 5 | |||||
#define HWC_INIT_DATA_MAX_RESPONSE 6 | |||||
#define HWC_INIT_DATA_MAX_NUM_CQS 7 | |||||
#define HWC_INIT_DATA_PDID 8 | |||||
#define HWC_INIT_DATA_GPA_MKEY 9 | |||||
/* Structures labeled with "HW DATA" are exchanged with the hardware. All of | |||||
* them are naturally aligned and hence don't need __packed. | |||||
*/ | |||||
union hwc_init_eq_id_db { | |||||
uint32_t as_uint32; | |||||
struct { | |||||
uint32_t eq_id : 16; | |||||
uint32_t doorbell: 16; | |||||
}; | |||||
}; /* HW DATA */ | |||||
union hwc_init_type_data { | |||||
uint32_t as_uint32; | |||||
struct { | |||||
uint32_t value : 24; | |||||
uint32_t type : 8; | |||||
}; | |||||
}; /* HW DATA */ | |||||
struct hwc_rx_oob { | |||||
uint32_t type : 6; | |||||
uint32_t eom : 1; | |||||
uint32_t som : 1; | |||||
uint32_t vendor_err : 8; | |||||
uint32_t reserved1 : 16; | |||||
uint32_t src_virt_wq : 24; | |||||
uint32_t src_vfid : 8; | |||||
uint32_t reserved2; | |||||
union { | |||||
uint32_t wqe_addr_low; | |||||
uint32_t wqe_offset; | |||||
}; | |||||
uint32_t wqe_addr_high; | |||||
uint32_t client_data_unit : 14; | |||||
uint32_t reserved3 : 18; | |||||
uint32_t tx_oob_data_size; | |||||
uint32_t chunk_offset : 21; | |||||
uint32_t reserved4 : 11; | |||||
}; /* HW DATA */ | |||||
struct hwc_tx_oob { | |||||
uint32_t reserved1; | |||||
uint32_t reserved2; | |||||
uint32_t vrq_id : 24; | |||||
uint32_t dest_vfid : 8; | |||||
uint32_t vrcq_id : 24; | |||||
uint32_t reserved3 : 8; | |||||
uint32_t vscq_id : 24; | |||||
uint32_t loopback : 1; | |||||
uint32_t lso_override: 1; | |||||
uint32_t dest_pf : 1; | |||||
uint32_t reserved4 : 5; | |||||
uint32_t vsq_id : 24; | |||||
uint32_t reserved5 : 8; | |||||
}; /* HW DATA */ | |||||
struct hwc_work_request { | |||||
void *buf_va; | |||||
void *buf_sge_addr; | |||||
uint32_t buf_len; | |||||
uint32_t msg_size; | |||||
struct gdma_wqe_request wqe_req; | |||||
struct hwc_tx_oob tx_oob; | |||||
struct gdma_sge sge; | |||||
}; | |||||
/* hwc_dma_buf represents the array of in-flight WQEs. | |||||
* mem_info as know as the GDMA mapped memory is partitioned and used by | |||||
* in-flight WQEs. | |||||
* The number of WQEs is determined by the number of in-flight messages. | |||||
*/ | |||||
struct hwc_dma_buf { | |||||
struct gdma_mem_info mem_info; | |||||
uint32_t gpa_mkey; | |||||
uint32_t num_reqs; | |||||
struct hwc_work_request reqs[]; | |||||
}; | |||||
typedef void hwc_rx_event_handler_t(void *ctx, uint32_t gdma_rxq_id, | |||||
const struct hwc_rx_oob *rx_oob); | |||||
typedef void hwc_tx_event_handler_t(void *ctx, uint32_t gdma_txq_id, | |||||
const struct hwc_rx_oob *rx_oob); | |||||
struct hwc_cq { | |||||
struct hw_channel_context *hwc; | |||||
struct gdma_queue *gdma_cq; | |||||
struct gdma_queue *gdma_eq; | |||||
struct gdma_comp *comp_buf; | |||||
uint16_t queue_depth; | |||||
hwc_rx_event_handler_t *rx_event_handler; | |||||
void *rx_event_ctx; | |||||
hwc_tx_event_handler_t *tx_event_handler; | |||||
void *tx_event_ctx; | |||||
}; | |||||
struct hwc_wq { | |||||
struct hw_channel_context *hwc; | |||||
struct gdma_queue *gdma_wq; | |||||
struct hwc_dma_buf *msg_buf; | |||||
uint16_t queue_depth; | |||||
struct hwc_cq *hwc_cq; | |||||
}; | |||||
struct hwc_caller_ctx { | |||||
struct completion comp_event; | |||||
void *output_buf; | |||||
uint32_t output_buflen; | |||||
uint32_t error; /* Error code */ | |||||
uint32_t status_code; | |||||
}; | |||||
struct hw_channel_context { | |||||
struct gdma_dev *gdma_dev; | |||||
device_t dev; | |||||
uint16_t num_inflight_msg; | |||||
uint32_t max_req_msg_size; | |||||
uint16_t hwc_init_q_depth_max; | |||||
uint32_t hwc_init_max_req_msg_size; | |||||
uint32_t hwc_init_max_resp_msg_size; | |||||
struct completion hwc_init_eqe_comp; | |||||
struct hwc_wq *rxq; | |||||
struct hwc_wq *txq; | |||||
struct hwc_cq *cq; | |||||
struct sema sema; | |||||
struct gdma_resource inflight_msg_res; | |||||
struct hwc_caller_ctx *caller_ctx; | |||||
}; | |||||
int mana_hwc_create_channel(struct gdma_context *gc); | |||||
void mana_hwc_destroy_channel(struct gdma_context *gc); | |||||
int mana_hwc_send_request(struct hw_channel_context *hwc, uint32_t req_len, | |||||
const void *req, uint32_t resp_len, void *resp); | |||||
#endif /* _HW_CHANNEL_H */ |