408 lines
12 KiB
C
408 lines
12 KiB
C
/*
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* Copyright (C) 2015 Cavium Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#ifndef NICVF_QUEUES_H
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#define NICVF_QUEUES_H
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#include "q_struct.h"
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#define MAX_QUEUE_SET 128
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#define MAX_RCV_QUEUES_PER_QS 8
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#define MAX_RCV_BUF_DESC_RINGS_PER_QS 2
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#define MAX_SND_QUEUES_PER_QS 8
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#define MAX_CMP_QUEUES_PER_QS 8
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/* VF's queue interrupt ranges */
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#define NICVF_INTR_ID_CQ 0
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#define NICVF_INTR_ID_SQ 8
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#define NICVF_INTR_ID_RBDR 16
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#define NICVF_INTR_ID_MISC 18
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#define NICVF_INTR_ID_QS_ERR 19
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#define for_each_cq_irq(irq) \
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for ((irq) = NICVF_INTR_ID_CQ; (irq) < NICVF_INTR_ID_SQ; (irq)++)
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#define for_each_sq_irq(irq) \
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for ((irq) = NICVF_INTR_ID_SQ; (irq) < NICVF_INTR_ID_RBDR; (irq)++)
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#define for_each_rbdr_irq(irq) \
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for ((irq) = NICVF_INTR_ID_RBDR; (irq) < NICVF_INTR_ID_MISC; (irq)++)
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#define RBDR_SIZE0 0UL /* 8K entries */
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#define RBDR_SIZE1 1UL /* 16K entries */
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#define RBDR_SIZE2 2UL /* 32K entries */
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#define RBDR_SIZE3 3UL /* 64K entries */
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#define RBDR_SIZE4 4UL /* 126K entries */
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#define RBDR_SIZE5 5UL /* 256K entries */
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#define RBDR_SIZE6 6UL /* 512K entries */
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#define SND_QUEUE_SIZE0 0UL /* 1K entries */
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#define SND_QUEUE_SIZE1 1UL /* 2K entries */
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#define SND_QUEUE_SIZE2 2UL /* 4K entries */
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#define SND_QUEUE_SIZE3 3UL /* 8K entries */
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#define SND_QUEUE_SIZE4 4UL /* 16K entries */
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#define SND_QUEUE_SIZE5 5UL /* 32K entries */
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#define SND_QUEUE_SIZE6 6UL /* 64K entries */
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#define CMP_QUEUE_SIZE0 0UL /* 1K entries */
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#define CMP_QUEUE_SIZE1 1UL /* 2K entries */
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#define CMP_QUEUE_SIZE2 2UL /* 4K entries */
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#define CMP_QUEUE_SIZE3 3UL /* 8K entries */
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#define CMP_QUEUE_SIZE4 4UL /* 16K entries */
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#define CMP_QUEUE_SIZE5 5UL /* 32K entries */
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#define CMP_QUEUE_SIZE6 6UL /* 64K entries */
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/* Default queue count per QS, its lengths and threshold values */
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#define RBDR_CNT 1
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#define RCV_QUEUE_CNT 8
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#define SND_QUEUE_CNT 8
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#define CMP_QUEUE_CNT 8 /* Max of RCV and SND qcount */
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#define SND_QSIZE SND_QUEUE_SIZE2
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#define SND_QUEUE_LEN (1UL << (SND_QSIZE + 10))
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#define MAX_SND_QUEUE_LEN (1UL << (SND_QUEUE_SIZE6 + 10))
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#define SND_QUEUE_THRESH 2UL
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#define MIN_SQ_DESC_PER_PKT_XMIT 2
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/* Since timestamp not enabled, otherwise 2 */
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#define MAX_CQE_PER_PKT_XMIT 1
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/*
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* Keep CQ and SQ sizes same, if timestamping
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* is enabled this equation will change.
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*/
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#define CMP_QSIZE CMP_QUEUE_SIZE2
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#define CMP_QUEUE_LEN (1UL << (CMP_QSIZE + 10))
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#define CMP_QUEUE_CQE_THRESH 32
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#define CMP_QUEUE_TIMER_THRESH 220 /* 10usec */
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#define RBDR_SIZE RBDR_SIZE0
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#define RCV_BUF_COUNT (1UL << (RBDR_SIZE + 13))
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#define MAX_RCV_BUF_COUNT (1UL << (RBDR_SIZE6 + 13))
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#define RBDR_THRESH (RCV_BUF_COUNT / 2)
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#define DMA_BUFFER_LEN 2048 /* In multiples of 128bytes */
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#define MAX_CQES_FOR_TX \
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((SND_QUEUE_LEN / MIN_SQ_DESC_PER_PKT_XMIT) * MAX_CQE_PER_PKT_XMIT)
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/* Calculate number of CQEs to reserve for all SQEs.
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* Its 1/256th level of CQ size.
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* '+ 1' to account for pipelining
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*/
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#define RQ_CQ_DROP \
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((256 / (CMP_QUEUE_LEN / (CMP_QUEUE_LEN - MAX_CQES_FOR_TX))) + 1)
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/* Descriptor size in bytes */
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#define SND_QUEUE_DESC_SIZE 16
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#define CMP_QUEUE_DESC_SIZE 512
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/* Buffer / descriptor alignments */
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#define NICVF_RCV_BUF_ALIGN 7
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#define NICVF_RCV_BUF_ALIGN_BYTES (1UL << NICVF_RCV_BUF_ALIGN)
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#define NICVF_CQ_BASE_ALIGN_BYTES 512 /* 9 bits */
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#define NICVF_SQ_BASE_ALIGN_BYTES 128 /* 7 bits */
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#define NICVF_ALIGNED_ADDR(addr, align_bytes) \
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roundup2((addr), (align_bytes))
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#define NICVF_ADDR_ALIGN_LEN(addr, bytes) \
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(NICVF_ALIGNED_ADDR((addr), (bytes)) - (bytes))
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#define NICVF_RCV_BUF_ALIGN_LEN(addr) \
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(NICVF_ALIGNED_ADDR((addr), NICVF_RCV_BUF_ALIGN_BYTES) - (addr))
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#define NICVF_TXBUF_MAXSIZE NIC_HW_MAX_FRS /* Total max payload without TSO */
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#define NICVF_TXBUF_NSEGS 256 /* Single command is at most 256 buffers
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(hdr + 255 subcmds) */
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/* TSO-related definitions */
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#define NICVF_TSO_MAXSIZE IP_MAXPACKET
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#define NICVF_TSO_NSEGS NICVF_TXBUF_NSEGS
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#define NICVF_TSO_HEADER_SIZE 128
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/* Queue enable/disable */
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#define NICVF_SQ_EN (1UL << 19)
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/* Queue reset */
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#define NICVF_CQ_RESET (1UL << 41)
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#define NICVF_SQ_RESET (1UL << 17)
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#define NICVF_RBDR_RESET (1UL << 43)
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enum CQ_RX_ERRLVL_E {
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CQ_ERRLVL_MAC,
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CQ_ERRLVL_L2,
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CQ_ERRLVL_L3,
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CQ_ERRLVL_L4,
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};
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enum CQ_RX_ERROP_E {
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CQ_RX_ERROP_RE_NONE = 0x0,
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CQ_RX_ERROP_RE_PARTIAL = 0x1,
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CQ_RX_ERROP_RE_JABBER = 0x2,
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CQ_RX_ERROP_RE_FCS = 0x7,
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CQ_RX_ERROP_RE_TERMINATE = 0x9,
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CQ_RX_ERROP_RE_RX_CTL = 0xb,
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CQ_RX_ERROP_PREL2_ERR = 0x1f,
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CQ_RX_ERROP_L2_FRAGMENT = 0x20,
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CQ_RX_ERROP_L2_OVERRUN = 0x21,
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CQ_RX_ERROP_L2_PFCS = 0x22,
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CQ_RX_ERROP_L2_PUNY = 0x23,
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CQ_RX_ERROP_L2_MAL = 0x24,
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CQ_RX_ERROP_L2_OVERSIZE = 0x25,
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CQ_RX_ERROP_L2_UNDERSIZE = 0x26,
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CQ_RX_ERROP_L2_LENMISM = 0x27,
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CQ_RX_ERROP_L2_PCLP = 0x28,
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CQ_RX_ERROP_IP_NOT = 0x41,
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CQ_RX_ERROP_IP_CSUM_ERR = 0x42,
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CQ_RX_ERROP_IP_MAL = 0x43,
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CQ_RX_ERROP_IP_MALD = 0x44,
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CQ_RX_ERROP_IP_HOP = 0x45,
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CQ_RX_ERROP_L3_ICRC = 0x46,
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CQ_RX_ERROP_L3_PCLP = 0x47,
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CQ_RX_ERROP_L4_MAL = 0x61,
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CQ_RX_ERROP_L4_CHK = 0x62,
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CQ_RX_ERROP_UDP_LEN = 0x63,
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CQ_RX_ERROP_L4_PORT = 0x64,
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CQ_RX_ERROP_TCP_FLAG = 0x65,
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CQ_RX_ERROP_TCP_OFFSET = 0x66,
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CQ_RX_ERROP_L4_PCLP = 0x67,
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CQ_RX_ERROP_RBDR_TRUNC = 0x70,
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};
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enum CQ_TX_ERROP_E {
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CQ_TX_ERROP_GOOD = 0x0,
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CQ_TX_ERROP_DESC_FAULT = 0x10,
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CQ_TX_ERROP_HDR_CONS_ERR = 0x11,
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CQ_TX_ERROP_SUBDC_ERR = 0x12,
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CQ_TX_ERROP_IMM_SIZE_OFLOW = 0x80,
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CQ_TX_ERROP_DATA_SEQUENCE_ERR = 0x81,
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CQ_TX_ERROP_MEM_SEQUENCE_ERR = 0x82,
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CQ_TX_ERROP_LOCK_VIOL = 0x83,
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CQ_TX_ERROP_DATA_FAULT = 0x84,
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CQ_TX_ERROP_TSTMP_CONFLICT = 0x85,
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CQ_TX_ERROP_TSTMP_TIMEOUT = 0x86,
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CQ_TX_ERROP_MEM_FAULT = 0x87,
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CQ_TX_ERROP_CK_OVERLAP = 0x88,
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CQ_TX_ERROP_CK_OFLOW = 0x89,
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CQ_TX_ERROP_ENUM_LAST = 0x8a,
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};
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struct cmp_queue_stats {
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struct tx_stats {
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uint64_t good;
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uint64_t desc_fault;
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uint64_t hdr_cons_err;
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uint64_t subdesc_err;
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uint64_t imm_size_oflow;
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uint64_t data_seq_err;
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uint64_t mem_seq_err;
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uint64_t lock_viol;
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uint64_t data_fault;
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uint64_t tstmp_conflict;
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uint64_t tstmp_timeout;
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uint64_t mem_fault;
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uint64_t csum_overlap;
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uint64_t csum_overflow;
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} tx;
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} __aligned(CACHE_LINE_SIZE);
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enum RQ_SQ_STATS {
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RQ_SQ_STATS_OCTS,
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RQ_SQ_STATS_PKTS,
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};
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struct rx_tx_queue_stats {
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uint64_t bytes;
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uint64_t pkts;
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} __aligned(CACHE_LINE_SIZE);
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struct q_desc_mem {
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bus_dma_tag_t dmat;
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bus_dmamap_t dmap;
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void *base;
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bus_addr_t phys_base;
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uint64_t size;
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uint16_t q_len;
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};
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struct rbdr {
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boolean_t enable;
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uint32_t dma_size;
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uint32_t frag_len;
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uint32_t thresh; /* Threshold level for interrupt */
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void *desc;
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uint32_t head;
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uint32_t tail;
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struct q_desc_mem dmem;
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struct nicvf *nic;
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int idx;
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struct task rbdr_task;
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struct task rbdr_task_nowait;
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struct taskqueue *rbdr_taskq;
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bus_dma_tag_t rbdr_buff_dmat;
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bus_dmamap_t *rbdr_buff_dmaps;
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} __aligned(CACHE_LINE_SIZE);
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struct rcv_queue {
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boolean_t enable;
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struct rbdr *rbdr_start;
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struct rbdr *rbdr_cont;
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boolean_t en_tcp_reassembly;
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uint8_t cq_qs; /* CQ's QS to which this RQ is assigned */
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uint8_t cq_idx; /* CQ index (0 to 7) in the QS */
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uint8_t cont_rbdr_qs; /* Continue buffer ptrs - QS num */
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uint8_t cont_qs_rbdr_idx; /* RBDR idx in the cont QS */
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uint8_t start_rbdr_qs; /* First buffer ptrs - QS num */
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uint8_t start_qs_rbdr_idx; /* RBDR idx in the above QS */
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uint8_t caching;
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struct rx_tx_queue_stats stats;
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boolean_t lro_enabled;
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struct lro_ctrl lro;
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} __aligned(CACHE_LINE_SIZE);
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struct cmp_queue {
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boolean_t enable;
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uint16_t thresh;
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struct nicvf *nic;
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int idx; /* This queue index */
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struct buf_ring *rx_br; /* Reception buf ring */
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struct mtx mtx; /* lock to serialize processing CQEs */
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char mtx_name[32];
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struct task cmp_task;
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struct taskqueue *cmp_taskq;
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u_int cmp_cpuid; /* CPU to which bind the CQ task */
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void *desc;
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struct q_desc_mem dmem;
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struct cmp_queue_stats stats;
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int irq;
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} __aligned(CACHE_LINE_SIZE);
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struct snd_buff {
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bus_dmamap_t dmap;
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struct mbuf *mbuf;
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};
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struct snd_queue {
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boolean_t enable;
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uint8_t cq_qs; /* CQ's QS to which this SQ is pointing */
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uint8_t cq_idx; /* CQ index (0 to 7) in the above QS */
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uint16_t thresh;
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volatile int free_cnt;
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uint32_t head;
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uint32_t tail;
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uint64_t *skbuff;
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void *desc;
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struct nicvf *nic;
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int idx; /* This queue index */
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bus_dma_tag_t snd_buff_dmat;
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struct snd_buff *snd_buff;
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struct buf_ring *br; /* Transmission buf ring */
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struct mtx mtx;
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char mtx_name[32];
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struct task snd_task;
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struct taskqueue *snd_taskq;
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struct q_desc_mem dmem;
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struct rx_tx_queue_stats stats;
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} __aligned(CACHE_LINE_SIZE);
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struct queue_set {
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boolean_t enable;
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boolean_t be_en;
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uint8_t vnic_id;
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uint8_t rq_cnt;
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uint8_t cq_cnt;
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uint64_t cq_len;
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uint8_t sq_cnt;
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uint64_t sq_len;
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uint8_t rbdr_cnt;
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uint64_t rbdr_len;
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struct rcv_queue rq[MAX_RCV_QUEUES_PER_QS];
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struct cmp_queue cq[MAX_CMP_QUEUES_PER_QS];
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struct snd_queue sq[MAX_SND_QUEUES_PER_QS];
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struct rbdr rbdr[MAX_RCV_BUF_DESC_RINGS_PER_QS];
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struct task qs_err_task;
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struct taskqueue *qs_err_taskq;
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} __aligned(CACHE_LINE_SIZE);
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#define GET_RBDR_DESC(RING, idx) \
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(&(((struct rbdr_entry_t *)((RING)->desc))[(idx)]))
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#define GET_SQ_DESC(RING, idx) \
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(&(((struct sq_hdr_subdesc *)((RING)->desc))[(idx)]))
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#define GET_CQ_DESC(RING, idx) \
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(&(((union cq_desc_t *)((RING)->desc))[(idx)]))
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/* CQ status bits */
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#define CQ_WR_FUL (1UL << 26)
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#define CQ_WR_DISABLE (1UL << 25)
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#define CQ_WR_FAULT (1UL << 24)
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#define CQ_CQE_COUNT (0xFFFF << 0)
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#define CQ_ERR_MASK (CQ_WR_FUL | CQ_WR_DISABLE | CQ_WR_FAULT)
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#define NICVF_TX_LOCK(sq) mtx_lock(&(sq)->mtx)
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#define NICVF_TX_TRYLOCK(sq) mtx_trylock(&(sq)->mtx)
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#define NICVF_TX_UNLOCK(sq) mtx_unlock(&(sq)->mtx)
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#define NICVF_TX_LOCK_ASSERT(sq) mtx_assert(&(sq)->mtx, MA_OWNED)
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#define NICVF_CMP_LOCK(cq) mtx_lock(&(cq)->mtx)
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#define NICVF_CMP_UNLOCK(cq) mtx_unlock(&(cq)->mtx)
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int nicvf_set_qset_resources(struct nicvf *);
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int nicvf_config_data_transfer(struct nicvf *, boolean_t);
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void nicvf_qset_config(struct nicvf *, boolean_t);
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void nicvf_enable_intr(struct nicvf *, int, int);
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void nicvf_disable_intr(struct nicvf *, int, int);
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void nicvf_clear_intr(struct nicvf *, int, int);
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int nicvf_is_intr_enabled(struct nicvf *, int, int);
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int nicvf_xmit_locked(struct snd_queue *sq);
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/* Register access APIs */
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void nicvf_reg_write(struct nicvf *, uint64_t, uint64_t);
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uint64_t nicvf_reg_read(struct nicvf *, uint64_t);
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void nicvf_qset_reg_write(struct nicvf *, uint64_t, uint64_t);
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uint64_t nicvf_qset_reg_read(struct nicvf *, uint64_t);
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void nicvf_queue_reg_write(struct nicvf *, uint64_t, uint64_t, uint64_t);
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uint64_t nicvf_queue_reg_read(struct nicvf *, uint64_t, uint64_t);
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/* Stats */
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void nicvf_update_rq_stats(struct nicvf *, int);
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void nicvf_update_sq_stats(struct nicvf *, int);
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int nicvf_check_cqe_rx_errs(struct nicvf *, struct cmp_queue *,
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struct cqe_rx_t *);
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int nicvf_check_cqe_tx_errs(struct nicvf *,struct cmp_queue *,
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struct cqe_send_t *);
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#endif /* NICVF_QUEUES_H */
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