4687 lines
121 KiB
C
4687 lines
121 KiB
C
/*-
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* Copyright (c) 2011 Chelsio Communications, Inc.
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* All rights reserved.
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* Written by: Navdeep Parhar <np@FreeBSD.org>
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_inet.h"
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#include "opt_inet6.h"
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#include <sys/types.h>
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#include <sys/eventhandler.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/queue.h>
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#include <sys/sbuf.h>
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#include <sys/taskqueue.h>
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#include <sys/time.h>
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#include <sys/sglist.h>
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#include <sys/sysctl.h>
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#include <sys/smp.h>
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#include <sys/counter.h>
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#include <net/bpf.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_vlan_var.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#include <netinet/tcp.h>
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#include <machine/md_var.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#ifdef DEV_NETMAP
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#include <machine/bus.h>
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#include <sys/selinfo.h>
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#include <net/if_var.h>
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#include <net/netmap.h>
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#include <dev/netmap/netmap_kern.h>
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#endif
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#include "common/common.h"
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#include "common/t4_regs.h"
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#include "common/t4_regs_values.h"
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#include "common/t4_msg.h"
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#include "t4_mp_ring.h"
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#ifdef T4_PKT_TIMESTAMP
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#define RX_COPY_THRESHOLD (MINCLSIZE - 8)
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#else
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#define RX_COPY_THRESHOLD MINCLSIZE
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#endif
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/*
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* Ethernet frames are DMA'd at this byte offset into the freelist buffer.
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* 0-7 are valid values.
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*/
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int fl_pktshift = 2;
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TUNABLE_INT("hw.cxgbe.fl_pktshift", &fl_pktshift);
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/*
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* Pad ethernet payload up to this boundary.
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* -1: driver should figure out a good value.
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* 0: disable padding.
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* Any power of 2 from 32 to 4096 (both inclusive) is also a valid value.
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*/
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int fl_pad = -1;
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TUNABLE_INT("hw.cxgbe.fl_pad", &fl_pad);
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/*
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* Status page length.
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* -1: driver should figure out a good value.
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* 64 or 128 are the only other valid values.
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*/
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int spg_len = -1;
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TUNABLE_INT("hw.cxgbe.spg_len", &spg_len);
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/*
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* Congestion drops.
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* -1: no congestion feedback (not recommended).
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* 0: backpressure the channel instead of dropping packets right away.
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* 1: no backpressure, drop packets for the congested queue immediately.
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*/
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static int cong_drop = 0;
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TUNABLE_INT("hw.cxgbe.cong_drop", &cong_drop);
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/*
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* Deliver multiple frames in the same free list buffer if they fit.
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* -1: let the driver decide whether to enable buffer packing or not.
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* 0: disable buffer packing.
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* 1: enable buffer packing.
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*/
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static int buffer_packing = -1;
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TUNABLE_INT("hw.cxgbe.buffer_packing", &buffer_packing);
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/*
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* Start next frame in a packed buffer at this boundary.
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* -1: driver should figure out a good value.
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* T4: driver will ignore this and use the same value as fl_pad above.
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* T5: 16, or a power of 2 from 64 to 4096 (both inclusive) is a valid value.
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*/
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static int fl_pack = -1;
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TUNABLE_INT("hw.cxgbe.fl_pack", &fl_pack);
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/*
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* Allow the driver to create mbuf(s) in a cluster allocated for rx.
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* 0: never; always allocate mbufs from the zone_mbuf UMA zone.
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* 1: ok to create mbuf(s) within a cluster if there is room.
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*/
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static int allow_mbufs_in_cluster = 1;
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TUNABLE_INT("hw.cxgbe.allow_mbufs_in_cluster", &allow_mbufs_in_cluster);
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/*
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* Largest rx cluster size that the driver is allowed to allocate.
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*/
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static int largest_rx_cluster = MJUM16BYTES;
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TUNABLE_INT("hw.cxgbe.largest_rx_cluster", &largest_rx_cluster);
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/*
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* Size of cluster allocation that's most likely to succeed. The driver will
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* fall back to this size if it fails to allocate clusters larger than this.
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*/
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static int safest_rx_cluster = PAGE_SIZE;
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TUNABLE_INT("hw.cxgbe.safest_rx_cluster", &safest_rx_cluster);
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struct txpkts {
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u_int wr_type; /* type 0 or type 1 */
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u_int npkt; /* # of packets in this work request */
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u_int plen; /* total payload (sum of all packets) */
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u_int len16; /* # of 16B pieces used by this work request */
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};
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/* A packet's SGL. This + m_pkthdr has all info needed for tx */
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struct sgl {
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struct sglist sg;
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struct sglist_seg seg[TX_SGL_SEGS];
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};
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static int service_iq(struct sge_iq *, int);
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static struct mbuf *get_fl_payload(struct adapter *, struct sge_fl *, uint32_t);
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static int t4_eth_rx(struct sge_iq *, const struct rss_header *, struct mbuf *);
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static inline void init_iq(struct sge_iq *, struct adapter *, int, int, int);
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static inline void init_fl(struct adapter *, struct sge_fl *, int, int, char *);
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static inline void init_eq(struct adapter *, struct sge_eq *, int, int, uint8_t,
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uint16_t, char *);
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static int alloc_ring(struct adapter *, size_t, bus_dma_tag_t *, bus_dmamap_t *,
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bus_addr_t *, void **);
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static int free_ring(struct adapter *, bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
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void *);
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static int alloc_iq_fl(struct vi_info *, struct sge_iq *, struct sge_fl *,
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int, int);
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static int free_iq_fl(struct vi_info *, struct sge_iq *, struct sge_fl *);
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static void add_fl_sysctls(struct sysctl_ctx_list *, struct sysctl_oid *,
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struct sge_fl *);
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static int alloc_fwq(struct adapter *);
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static int free_fwq(struct adapter *);
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static int alloc_mgmtq(struct adapter *);
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static int free_mgmtq(struct adapter *);
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static int alloc_rxq(struct vi_info *, struct sge_rxq *, int, int,
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struct sysctl_oid *);
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static int free_rxq(struct vi_info *, struct sge_rxq *);
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#ifdef TCP_OFFLOAD
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static int alloc_ofld_rxq(struct vi_info *, struct sge_ofld_rxq *, int, int,
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struct sysctl_oid *);
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static int free_ofld_rxq(struct vi_info *, struct sge_ofld_rxq *);
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#endif
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#ifdef DEV_NETMAP
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static int alloc_nm_rxq(struct vi_info *, struct sge_nm_rxq *, int, int,
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struct sysctl_oid *);
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static int free_nm_rxq(struct vi_info *, struct sge_nm_rxq *);
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static int alloc_nm_txq(struct vi_info *, struct sge_nm_txq *, int, int,
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struct sysctl_oid *);
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static int free_nm_txq(struct vi_info *, struct sge_nm_txq *);
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#endif
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static int ctrl_eq_alloc(struct adapter *, struct sge_eq *);
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static int eth_eq_alloc(struct adapter *, struct vi_info *, struct sge_eq *);
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#ifdef TCP_OFFLOAD
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static int ofld_eq_alloc(struct adapter *, struct vi_info *, struct sge_eq *);
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#endif
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static int alloc_eq(struct adapter *, struct vi_info *, struct sge_eq *);
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static int free_eq(struct adapter *, struct sge_eq *);
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static int alloc_wrq(struct adapter *, struct vi_info *, struct sge_wrq *,
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struct sysctl_oid *);
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static int free_wrq(struct adapter *, struct sge_wrq *);
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static int alloc_txq(struct vi_info *, struct sge_txq *, int,
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struct sysctl_oid *);
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static int free_txq(struct vi_info *, struct sge_txq *);
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static void oneseg_dma_callback(void *, bus_dma_segment_t *, int, int);
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static inline void ring_fl_db(struct adapter *, struct sge_fl *);
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static int refill_fl(struct adapter *, struct sge_fl *, int);
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static void refill_sfl(void *);
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static int alloc_fl_sdesc(struct sge_fl *);
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static void free_fl_sdesc(struct adapter *, struct sge_fl *);
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static void find_best_refill_source(struct adapter *, struct sge_fl *, int);
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static void find_safe_refill_source(struct adapter *, struct sge_fl *);
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static void add_fl_to_sfl(struct adapter *, struct sge_fl *);
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static inline void get_pkt_gl(struct mbuf *, struct sglist *);
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static inline u_int txpkt_len16(u_int, u_int);
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static inline u_int txpkts0_len16(u_int);
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static inline u_int txpkts1_len16(void);
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static u_int write_txpkt_wr(struct sge_txq *, struct fw_eth_tx_pkt_wr *,
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struct mbuf *, u_int);
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static int try_txpkts(struct mbuf *, struct mbuf *, struct txpkts *, u_int);
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static int add_to_txpkts(struct mbuf *, struct txpkts *, u_int);
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static u_int write_txpkts_wr(struct sge_txq *, struct fw_eth_tx_pkts_wr *,
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struct mbuf *, const struct txpkts *, u_int);
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static void write_gl_to_txd(struct sge_txq *, struct mbuf *, caddr_t *, int);
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static inline void copy_to_txd(struct sge_eq *, caddr_t, caddr_t *, int);
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static inline void ring_eq_db(struct adapter *, struct sge_eq *, u_int);
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static inline uint16_t read_hw_cidx(struct sge_eq *);
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static inline u_int reclaimable_tx_desc(struct sge_eq *);
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static inline u_int total_available_tx_desc(struct sge_eq *);
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static u_int reclaim_tx_descs(struct sge_txq *, u_int);
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static void tx_reclaim(void *, int);
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static __be64 get_flit(struct sglist_seg *, int, int);
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static int handle_sge_egr_update(struct sge_iq *, const struct rss_header *,
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struct mbuf *);
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static int handle_fw_msg(struct sge_iq *, const struct rss_header *,
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struct mbuf *);
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static void wrq_tx_drain(void *, int);
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static void drain_wrq_wr_list(struct adapter *, struct sge_wrq *);
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static int sysctl_uint16(SYSCTL_HANDLER_ARGS);
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static int sysctl_bufsizes(SYSCTL_HANDLER_ARGS);
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static counter_u64_t extfree_refs;
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static counter_u64_t extfree_rels;
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/*
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* Called on MOD_LOAD. Validates and calculates the SGE tunables.
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*/
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void
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t4_sge_modload(void)
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{
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if (fl_pktshift < 0 || fl_pktshift > 7) {
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printf("Invalid hw.cxgbe.fl_pktshift value (%d),"
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" using 2 instead.\n", fl_pktshift);
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fl_pktshift = 2;
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}
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if (spg_len != 64 && spg_len != 128) {
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int len;
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#if defined(__i386__) || defined(__amd64__)
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len = cpu_clflush_line_size > 64 ? 128 : 64;
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#else
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len = 64;
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#endif
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if (spg_len != -1) {
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printf("Invalid hw.cxgbe.spg_len value (%d),"
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" using %d instead.\n", spg_len, len);
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}
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spg_len = len;
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}
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if (cong_drop < -1 || cong_drop > 1) {
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printf("Invalid hw.cxgbe.cong_drop value (%d),"
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" using 0 instead.\n", cong_drop);
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cong_drop = 0;
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}
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extfree_refs = counter_u64_alloc(M_WAITOK);
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extfree_rels = counter_u64_alloc(M_WAITOK);
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counter_u64_zero(extfree_refs);
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counter_u64_zero(extfree_rels);
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}
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void
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t4_sge_modunload(void)
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{
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counter_u64_free(extfree_refs);
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counter_u64_free(extfree_rels);
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}
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uint64_t
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t4_sge_extfree_refs(void)
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{
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uint64_t refs, rels;
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rels = counter_u64_fetch(extfree_rels);
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refs = counter_u64_fetch(extfree_refs);
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return (refs - rels);
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}
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void
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t4_init_sge_cpl_handlers(struct adapter *sc)
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{
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t4_register_cpl_handler(sc, CPL_FW4_MSG, handle_fw_msg);
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t4_register_cpl_handler(sc, CPL_FW6_MSG, handle_fw_msg);
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t4_register_cpl_handler(sc, CPL_SGE_EGR_UPDATE, handle_sge_egr_update);
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t4_register_cpl_handler(sc, CPL_RX_PKT, t4_eth_rx);
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t4_register_fw_msg_handler(sc, FW6_TYPE_CMD_RPL, t4_handle_fw_rpl);
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}
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static inline void
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setup_pad_and_pack_boundaries(struct adapter *sc)
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{
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uint32_t v, m;
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int pad, pack;
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pad = fl_pad;
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if (fl_pad < 32 || fl_pad > 4096 || !powerof2(fl_pad)) {
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/*
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* If there is any chance that we might use buffer packing and
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* the chip is a T4, then pick 64 as the pad/pack boundary. Set
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* it to 32 in all other cases.
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*/
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pad = is_t4(sc) && buffer_packing ? 64 : 32;
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/*
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* For fl_pad = 0 we'll still write a reasonable value to the
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* register but all the freelists will opt out of padding.
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* We'll complain here only if the user tried to set it to a
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* value greater than 0 that was invalid.
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*/
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if (fl_pad > 0) {
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device_printf(sc->dev, "Invalid hw.cxgbe.fl_pad value"
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" (%d), using %d instead.\n", fl_pad, pad);
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}
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}
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m = V_INGPADBOUNDARY(M_INGPADBOUNDARY);
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v = V_INGPADBOUNDARY(ilog2(pad) - 5);
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t4_set_reg_field(sc, A_SGE_CONTROL, m, v);
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if (is_t4(sc)) {
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if (fl_pack != -1 && fl_pack != pad) {
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/* Complain but carry on. */
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device_printf(sc->dev, "hw.cxgbe.fl_pack (%d) ignored,"
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" using %d instead.\n", fl_pack, pad);
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}
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return;
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}
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pack = fl_pack;
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if (fl_pack < 16 || fl_pack == 32 || fl_pack > 4096 ||
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!powerof2(fl_pack)) {
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pack = max(sc->params.pci.mps, CACHE_LINE_SIZE);
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MPASS(powerof2(pack));
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if (pack < 16)
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pack = 16;
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if (pack == 32)
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pack = 64;
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if (pack > 4096)
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pack = 4096;
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if (fl_pack != -1) {
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device_printf(sc->dev, "Invalid hw.cxgbe.fl_pack value"
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" (%d), using %d instead.\n", fl_pack, pack);
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}
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}
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m = V_INGPACKBOUNDARY(M_INGPACKBOUNDARY);
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if (pack == 16)
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v = V_INGPACKBOUNDARY(0);
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else
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v = V_INGPACKBOUNDARY(ilog2(pack) - 5);
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MPASS(!is_t4(sc)); /* T4 doesn't have SGE_CONTROL2 */
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t4_set_reg_field(sc, A_SGE_CONTROL2, m, v);
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}
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/*
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* adap->params.vpd.cclk must be set up before this is called.
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*/
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void
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t4_tweak_chip_settings(struct adapter *sc)
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{
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int i;
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uint32_t v, m;
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int intr_timer[SGE_NTIMERS] = {1, 5, 10, 50, 100, 200};
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int timer_max = M_TIMERVALUE0 * 1000 / sc->params.vpd.cclk;
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int intr_pktcount[SGE_NCOUNTERS] = {1, 8, 16, 32}; /* 63 max */
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uint16_t indsz = min(RX_COPY_THRESHOLD - 1, M_INDICATESIZE);
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static int sge_flbuf_sizes[] = {
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MCLBYTES,
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#if MJUMPAGESIZE != MCLBYTES
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MJUMPAGESIZE,
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MJUMPAGESIZE - CL_METADATA_SIZE,
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MJUMPAGESIZE - 2 * MSIZE - CL_METADATA_SIZE,
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#endif
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MJUM9BYTES,
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MJUM16BYTES,
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MCLBYTES - MSIZE - CL_METADATA_SIZE,
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MJUM9BYTES - CL_METADATA_SIZE,
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MJUM16BYTES - CL_METADATA_SIZE,
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};
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KASSERT(sc->flags & MASTER_PF,
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("%s: trying to change chip settings when not master.", __func__));
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m = V_PKTSHIFT(M_PKTSHIFT) | F_RXPKTCPLMODE | F_EGRSTATUSPAGESIZE;
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v = V_PKTSHIFT(fl_pktshift) | F_RXPKTCPLMODE |
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V_EGRSTATUSPAGESIZE(spg_len == 128);
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t4_set_reg_field(sc, A_SGE_CONTROL, m, v);
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setup_pad_and_pack_boundaries(sc);
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v = V_HOSTPAGESIZEPF0(PAGE_SHIFT - 10) |
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V_HOSTPAGESIZEPF1(PAGE_SHIFT - 10) |
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V_HOSTPAGESIZEPF2(PAGE_SHIFT - 10) |
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V_HOSTPAGESIZEPF3(PAGE_SHIFT - 10) |
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V_HOSTPAGESIZEPF4(PAGE_SHIFT - 10) |
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V_HOSTPAGESIZEPF5(PAGE_SHIFT - 10) |
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V_HOSTPAGESIZEPF6(PAGE_SHIFT - 10) |
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V_HOSTPAGESIZEPF7(PAGE_SHIFT - 10);
|
|
t4_write_reg(sc, A_SGE_HOST_PAGE_SIZE, v);
|
|
|
|
KASSERT(nitems(sge_flbuf_sizes) <= SGE_FLBUF_SIZES,
|
|
("%s: hw buffer size table too big", __func__));
|
|
for (i = 0; i < min(nitems(sge_flbuf_sizes), SGE_FLBUF_SIZES); i++) {
|
|
t4_write_reg(sc, A_SGE_FL_BUFFER_SIZE0 + (4 * i),
|
|
sge_flbuf_sizes[i]);
|
|
}
|
|
|
|
v = V_THRESHOLD_0(intr_pktcount[0]) | V_THRESHOLD_1(intr_pktcount[1]) |
|
|
V_THRESHOLD_2(intr_pktcount[2]) | V_THRESHOLD_3(intr_pktcount[3]);
|
|
t4_write_reg(sc, A_SGE_INGRESS_RX_THRESHOLD, v);
|
|
|
|
KASSERT(intr_timer[0] <= timer_max,
|
|
("%s: not a single usable timer (%d, %d)", __func__, intr_timer[0],
|
|
timer_max));
|
|
for (i = 1; i < nitems(intr_timer); i++) {
|
|
KASSERT(intr_timer[i] >= intr_timer[i - 1],
|
|
("%s: timers not listed in increasing order (%d)",
|
|
__func__, i));
|
|
|
|
while (intr_timer[i] > timer_max) {
|
|
if (i == nitems(intr_timer) - 1) {
|
|
intr_timer[i] = timer_max;
|
|
break;
|
|
}
|
|
intr_timer[i] += intr_timer[i - 1];
|
|
intr_timer[i] /= 2;
|
|
}
|
|
}
|
|
|
|
v = V_TIMERVALUE0(us_to_core_ticks(sc, intr_timer[0])) |
|
|
V_TIMERVALUE1(us_to_core_ticks(sc, intr_timer[1]));
|
|
t4_write_reg(sc, A_SGE_TIMER_VALUE_0_AND_1, v);
|
|
v = V_TIMERVALUE2(us_to_core_ticks(sc, intr_timer[2])) |
|
|
V_TIMERVALUE3(us_to_core_ticks(sc, intr_timer[3]));
|
|
t4_write_reg(sc, A_SGE_TIMER_VALUE_2_AND_3, v);
|
|
v = V_TIMERVALUE4(us_to_core_ticks(sc, intr_timer[4])) |
|
|
V_TIMERVALUE5(us_to_core_ticks(sc, intr_timer[5]));
|
|
t4_write_reg(sc, A_SGE_TIMER_VALUE_4_AND_5, v);
|
|
|
|
/* 4K, 16K, 64K, 256K DDP "page sizes" */
|
|
v = V_HPZ0(0) | V_HPZ1(2) | V_HPZ2(4) | V_HPZ3(6);
|
|
t4_write_reg(sc, A_ULP_RX_TDDP_PSZ, v);
|
|
|
|
m = v = F_TDDPTAGTCB;
|
|
t4_set_reg_field(sc, A_ULP_RX_CTL, m, v);
|
|
|
|
m = V_INDICATESIZE(M_INDICATESIZE) | F_REARMDDPOFFSET |
|
|
F_RESETDDPOFFSET;
|
|
v = V_INDICATESIZE(indsz) | F_REARMDDPOFFSET | F_RESETDDPOFFSET;
|
|
t4_set_reg_field(sc, A_TP_PARA_REG5, m, v);
|
|
}
|
|
|
|
/*
|
|
* SGE wants the buffer to be at least 64B and then a multiple of 16. If
|
|
* padding is is use the buffer's start and end need to be aligned to the pad
|
|
* boundary as well. We'll just make sure that the size is a multiple of the
|
|
* boundary here, it is up to the buffer allocation code to make sure the start
|
|
* of the buffer is aligned as well.
|
|
*/
|
|
static inline int
|
|
hwsz_ok(struct adapter *sc, int hwsz)
|
|
{
|
|
int mask = fl_pad ? sc->params.sge.pad_boundary - 1 : 16 - 1;
|
|
|
|
return (hwsz >= 64 && (hwsz & mask) == 0);
|
|
}
|
|
|
|
/*
|
|
* XXX: driver really should be able to deal with unexpected settings.
|
|
*/
|
|
int
|
|
t4_read_chip_settings(struct adapter *sc)
|
|
{
|
|
struct sge *s = &sc->sge;
|
|
struct sge_params *sp = &sc->params.sge;
|
|
int i, j, n, rc = 0;
|
|
uint32_t m, v, r;
|
|
uint16_t indsz = min(RX_COPY_THRESHOLD - 1, M_INDICATESIZE);
|
|
static int sw_buf_sizes[] = { /* Sorted by size */
|
|
MCLBYTES,
|
|
#if MJUMPAGESIZE != MCLBYTES
|
|
MJUMPAGESIZE,
|
|
#endif
|
|
MJUM9BYTES,
|
|
MJUM16BYTES
|
|
};
|
|
struct sw_zone_info *swz, *safe_swz;
|
|
struct hw_buf_info *hwb;
|
|
|
|
t4_init_sge_params(sc);
|
|
|
|
m = F_RXPKTCPLMODE;
|
|
v = F_RXPKTCPLMODE;
|
|
r = t4_read_reg(sc, A_SGE_CONTROL);
|
|
if ((r & m) != v) {
|
|
device_printf(sc->dev, "invalid SGE_CONTROL(0x%x)\n", r);
|
|
rc = EINVAL;
|
|
}
|
|
|
|
/*
|
|
* If this changes then every single use of PAGE_SHIFT in the driver
|
|
* needs to be carefully reviewed for PAGE_SHIFT vs sp->page_shift.
|
|
*/
|
|
if (sp->page_shift != PAGE_SHIFT) {
|
|
device_printf(sc->dev, "invalid SGE_HOST_PAGE_SIZE(0x%x)\n", r);
|
|
rc = EINVAL;
|
|
}
|
|
|
|
/* Filter out unusable hw buffer sizes entirely (mark with -2). */
|
|
hwb = &s->hw_buf_info[0];
|
|
for (i = 0; i < nitems(s->hw_buf_info); i++, hwb++) {
|
|
r = t4_read_reg(sc, A_SGE_FL_BUFFER_SIZE0 + (4 * i));
|
|
hwb->size = r;
|
|
hwb->zidx = hwsz_ok(sc, r) ? -1 : -2;
|
|
hwb->next = -1;
|
|
}
|
|
|
|
/*
|
|
* Create a sorted list in decreasing order of hw buffer sizes (and so
|
|
* increasing order of spare area) for each software zone.
|
|
*
|
|
* If padding is enabled then the start and end of the buffer must align
|
|
* to the pad boundary; if packing is enabled then they must align with
|
|
* the pack boundary as well. Allocations from the cluster zones are
|
|
* aligned to min(size, 4K), so the buffer starts at that alignment and
|
|
* ends at hwb->size alignment. If mbuf inlining is allowed the
|
|
* starting alignment will be reduced to MSIZE and the driver will
|
|
* exercise appropriate caution when deciding on the best buffer layout
|
|
* to use.
|
|
*/
|
|
n = 0; /* no usable buffer size to begin with */
|
|
swz = &s->sw_zone_info[0];
|
|
safe_swz = NULL;
|
|
for (i = 0; i < SW_ZONE_SIZES; i++, swz++) {
|
|
int8_t head = -1, tail = -1;
|
|
|
|
swz->size = sw_buf_sizes[i];
|
|
swz->zone = m_getzone(swz->size);
|
|
swz->type = m_gettype(swz->size);
|
|
|
|
if (swz->size < PAGE_SIZE) {
|
|
MPASS(powerof2(swz->size));
|
|
if (fl_pad && (swz->size % sp->pad_boundary != 0))
|
|
continue;
|
|
}
|
|
|
|
if (swz->size == safest_rx_cluster)
|
|
safe_swz = swz;
|
|
|
|
hwb = &s->hw_buf_info[0];
|
|
for (j = 0; j < SGE_FLBUF_SIZES; j++, hwb++) {
|
|
if (hwb->zidx != -1 || hwb->size > swz->size)
|
|
continue;
|
|
#ifdef INVARIANTS
|
|
if (fl_pad)
|
|
MPASS(hwb->size % sp->pad_boundary == 0);
|
|
#endif
|
|
hwb->zidx = i;
|
|
if (head == -1)
|
|
head = tail = j;
|
|
else if (hwb->size < s->hw_buf_info[tail].size) {
|
|
s->hw_buf_info[tail].next = j;
|
|
tail = j;
|
|
} else {
|
|
int8_t *cur;
|
|
struct hw_buf_info *t;
|
|
|
|
for (cur = &head; *cur != -1; cur = &t->next) {
|
|
t = &s->hw_buf_info[*cur];
|
|
if (hwb->size == t->size) {
|
|
hwb->zidx = -2;
|
|
break;
|
|
}
|
|
if (hwb->size > t->size) {
|
|
hwb->next = *cur;
|
|
*cur = j;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
swz->head_hwidx = head;
|
|
swz->tail_hwidx = tail;
|
|
|
|
if (tail != -1) {
|
|
n++;
|
|
if (swz->size - s->hw_buf_info[tail].size >=
|
|
CL_METADATA_SIZE)
|
|
sc->flags |= BUF_PACKING_OK;
|
|
}
|
|
}
|
|
if (n == 0) {
|
|
device_printf(sc->dev, "no usable SGE FL buffer size.\n");
|
|
rc = EINVAL;
|
|
}
|
|
|
|
s->safe_hwidx1 = -1;
|
|
s->safe_hwidx2 = -1;
|
|
if (safe_swz != NULL) {
|
|
s->safe_hwidx1 = safe_swz->head_hwidx;
|
|
for (i = safe_swz->head_hwidx; i != -1; i = hwb->next) {
|
|
int spare;
|
|
|
|
hwb = &s->hw_buf_info[i];
|
|
#ifdef INVARIANTS
|
|
if (fl_pad)
|
|
MPASS(hwb->size % sp->pad_boundary == 0);
|
|
#endif
|
|
spare = safe_swz->size - hwb->size;
|
|
if (spare >= CL_METADATA_SIZE) {
|
|
s->safe_hwidx2 = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
v = V_HPZ0(0) | V_HPZ1(2) | V_HPZ2(4) | V_HPZ3(6);
|
|
r = t4_read_reg(sc, A_ULP_RX_TDDP_PSZ);
|
|
if (r != v) {
|
|
device_printf(sc->dev, "invalid ULP_RX_TDDP_PSZ(0x%x)\n", r);
|
|
rc = EINVAL;
|
|
}
|
|
|
|
m = v = F_TDDPTAGTCB;
|
|
r = t4_read_reg(sc, A_ULP_RX_CTL);
|
|
if ((r & m) != v) {
|
|
device_printf(sc->dev, "invalid ULP_RX_CTL(0x%x)\n", r);
|
|
rc = EINVAL;
|
|
}
|
|
|
|
m = V_INDICATESIZE(M_INDICATESIZE) | F_REARMDDPOFFSET |
|
|
F_RESETDDPOFFSET;
|
|
v = V_INDICATESIZE(indsz) | F_REARMDDPOFFSET | F_RESETDDPOFFSET;
|
|
r = t4_read_reg(sc, A_TP_PARA_REG5);
|
|
if ((r & m) != v) {
|
|
device_printf(sc->dev, "invalid TP_PARA_REG5(0x%x)\n", r);
|
|
rc = EINVAL;
|
|
}
|
|
|
|
t4_init_tp_params(sc);
|
|
|
|
t4_read_mtu_tbl(sc, sc->params.mtus, NULL);
|
|
t4_load_mtus(sc, sc->params.mtus, sc->params.a_wnd, sc->params.b_wnd);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
int
|
|
t4_create_dma_tag(struct adapter *sc)
|
|
{
|
|
int rc;
|
|
|
|
rc = bus_dma_tag_create(bus_get_dma_tag(sc->dev), 1, 0,
|
|
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE,
|
|
BUS_SPACE_UNRESTRICTED, BUS_SPACE_MAXSIZE, BUS_DMA_ALLOCNOW, NULL,
|
|
NULL, &sc->dmat);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev,
|
|
"failed to create main DMA tag: %d\n", rc);
|
|
}
|
|
|
|
return (rc);
|
|
}
|
|
|
|
void
|
|
t4_sge_sysctls(struct adapter *sc, struct sysctl_ctx_list *ctx,
|
|
struct sysctl_oid_list *children)
|
|
{
|
|
struct sge_params *sp = &sc->params.sge;
|
|
|
|
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "buffer_sizes",
|
|
CTLTYPE_STRING | CTLFLAG_RD, &sc->sge, 0, sysctl_bufsizes, "A",
|
|
"freelist buffer sizes");
|
|
|
|
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "fl_pktshift", CTLFLAG_RD,
|
|
NULL, sp->fl_pktshift, "payload DMA offset in rx buffer (bytes)");
|
|
|
|
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "fl_pad", CTLFLAG_RD,
|
|
NULL, sp->pad_boundary, "payload pad boundary (bytes)");
|
|
|
|
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "spg_len", CTLFLAG_RD,
|
|
NULL, sp->spg_len, "status page size (bytes)");
|
|
|
|
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "cong_drop", CTLFLAG_RD,
|
|
NULL, cong_drop, "congestion drop setting");
|
|
|
|
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "fl_pack", CTLFLAG_RD,
|
|
NULL, sp->pack_boundary, "payload pack boundary (bytes)");
|
|
}
|
|
|
|
int
|
|
t4_destroy_dma_tag(struct adapter *sc)
|
|
{
|
|
if (sc->dmat)
|
|
bus_dma_tag_destroy(sc->dmat);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Allocate and initialize the firmware event queue and the management queue.
|
|
*
|
|
* Returns errno on failure. Resources allocated up to that point may still be
|
|
* allocated. Caller is responsible for cleanup in case this function fails.
|
|
*/
|
|
int
|
|
t4_setup_adapter_queues(struct adapter *sc)
|
|
{
|
|
int rc;
|
|
|
|
ADAPTER_LOCK_ASSERT_NOTOWNED(sc);
|
|
|
|
sysctl_ctx_init(&sc->ctx);
|
|
sc->flags |= ADAP_SYSCTL_CTX;
|
|
|
|
/*
|
|
* Firmware event queue
|
|
*/
|
|
rc = alloc_fwq(sc);
|
|
if (rc != 0)
|
|
return (rc);
|
|
|
|
/*
|
|
* Management queue. This is just a control queue that uses the fwq as
|
|
* its associated iq.
|
|
*/
|
|
rc = alloc_mgmtq(sc);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
/*
|
|
* Idempotent
|
|
*/
|
|
int
|
|
t4_teardown_adapter_queues(struct adapter *sc)
|
|
{
|
|
|
|
ADAPTER_LOCK_ASSERT_NOTOWNED(sc);
|
|
|
|
/* Do this before freeing the queue */
|
|
if (sc->flags & ADAP_SYSCTL_CTX) {
|
|
sysctl_ctx_free(&sc->ctx);
|
|
sc->flags &= ~ADAP_SYSCTL_CTX;
|
|
}
|
|
|
|
free_mgmtq(sc);
|
|
free_fwq(sc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static inline int
|
|
first_vector(struct vi_info *vi)
|
|
{
|
|
struct adapter *sc = vi->pi->adapter;
|
|
|
|
if (sc->intr_count == 1)
|
|
return (0);
|
|
|
|
return (vi->first_intr);
|
|
}
|
|
|
|
/*
|
|
* Given an arbitrary "index," come up with an iq that can be used by other
|
|
* queues (of this VI) for interrupt forwarding, SGE egress updates, etc.
|
|
* The iq returned is guaranteed to be something that takes direct interrupts.
|
|
*/
|
|
static struct sge_iq *
|
|
vi_intr_iq(struct vi_info *vi, int idx)
|
|
{
|
|
struct adapter *sc = vi->pi->adapter;
|
|
struct sge *s = &sc->sge;
|
|
struct sge_iq *iq = NULL;
|
|
int nintr, i;
|
|
|
|
if (sc->intr_count == 1)
|
|
return (&sc->sge.fwq);
|
|
|
|
KASSERT(!(vi->flags & VI_NETMAP),
|
|
("%s: called on netmap VI", __func__));
|
|
nintr = vi->nintr;
|
|
KASSERT(nintr != 0,
|
|
("%s: vi %p has no exclusive interrupts, total interrupts = %d",
|
|
__func__, vi, sc->intr_count));
|
|
i = idx % nintr;
|
|
|
|
if (vi->flags & INTR_RXQ) {
|
|
if (i < vi->nrxq) {
|
|
iq = &s->rxq[vi->first_rxq + i].iq;
|
|
goto done;
|
|
}
|
|
i -= vi->nrxq;
|
|
}
|
|
#ifdef TCP_OFFLOAD
|
|
if (vi->flags & INTR_OFLD_RXQ) {
|
|
if (i < vi->nofldrxq) {
|
|
iq = &s->ofld_rxq[vi->first_ofld_rxq + i].iq;
|
|
goto done;
|
|
}
|
|
i -= vi->nofldrxq;
|
|
}
|
|
#endif
|
|
panic("%s: vi %p, intr_flags 0x%lx, idx %d, total intr %d\n", __func__,
|
|
vi, vi->flags & INTR_ALL, idx, nintr);
|
|
done:
|
|
MPASS(iq != NULL);
|
|
KASSERT(iq->flags & IQ_INTR,
|
|
("%s: iq %p (vi %p, intr_flags 0x%lx, idx %d)", __func__, iq, vi,
|
|
vi->flags & INTR_ALL, idx));
|
|
return (iq);
|
|
}
|
|
|
|
/* Maximum payload that can be delivered with a single iq descriptor */
|
|
static inline int
|
|
mtu_to_max_payload(struct adapter *sc, int mtu, const int toe)
|
|
{
|
|
int payload;
|
|
|
|
#ifdef TCP_OFFLOAD
|
|
if (toe) {
|
|
payload = sc->tt.rx_coalesce ?
|
|
G_RXCOALESCESIZE(t4_read_reg(sc, A_TP_PARA_REG2)) : mtu;
|
|
} else {
|
|
#endif
|
|
/* large enough even when hw VLAN extraction is disabled */
|
|
payload = sc->params.sge.fl_pktshift + ETHER_HDR_LEN +
|
|
ETHER_VLAN_ENCAP_LEN + mtu;
|
|
#ifdef TCP_OFFLOAD
|
|
}
|
|
#endif
|
|
|
|
return (payload);
|
|
}
|
|
|
|
int
|
|
t4_setup_vi_queues(struct vi_info *vi)
|
|
{
|
|
int rc = 0, i, j, intr_idx, iqid;
|
|
struct sge_rxq *rxq;
|
|
struct sge_txq *txq;
|
|
struct sge_wrq *ctrlq;
|
|
#ifdef TCP_OFFLOAD
|
|
struct sge_ofld_rxq *ofld_rxq;
|
|
struct sge_wrq *ofld_txq;
|
|
#endif
|
|
#ifdef DEV_NETMAP
|
|
struct sge_nm_rxq *nm_rxq;
|
|
struct sge_nm_txq *nm_txq;
|
|
#endif
|
|
char name[16];
|
|
struct port_info *pi = vi->pi;
|
|
struct adapter *sc = pi->adapter;
|
|
struct ifnet *ifp = vi->ifp;
|
|
struct sysctl_oid *oid = device_get_sysctl_tree(vi->dev);
|
|
struct sysctl_oid_list *children = SYSCTL_CHILDREN(oid);
|
|
int maxp, mtu = ifp->if_mtu;
|
|
|
|
/* Interrupt vector to start from (when using multiple vectors) */
|
|
intr_idx = first_vector(vi);
|
|
|
|
#ifdef DEV_NETMAP
|
|
if (vi->flags & VI_NETMAP) {
|
|
/*
|
|
* We don't have buffers to back the netmap rx queues
|
|
* right now so we create the queues in a way that
|
|
* doesn't set off any congestion signal in the chip.
|
|
*/
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "rxq",
|
|
CTLFLAG_RD, NULL, "rx queues");
|
|
for_each_nm_rxq(vi, i, nm_rxq) {
|
|
rc = alloc_nm_rxq(vi, nm_rxq, intr_idx, i, oid);
|
|
if (rc != 0)
|
|
goto done;
|
|
intr_idx++;
|
|
}
|
|
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "txq",
|
|
CTLFLAG_RD, NULL, "tx queues");
|
|
for_each_nm_txq(vi, i, nm_txq) {
|
|
iqid = vi->first_rxq + (i % vi->nrxq);
|
|
rc = alloc_nm_txq(vi, nm_txq, iqid, i, oid);
|
|
if (rc != 0)
|
|
goto done;
|
|
}
|
|
goto done;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* First pass over all NIC and TOE rx queues:
|
|
* a) initialize iq and fl
|
|
* b) allocate queue iff it will take direct interrupts.
|
|
*/
|
|
maxp = mtu_to_max_payload(sc, mtu, 0);
|
|
if (vi->flags & INTR_RXQ) {
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "rxq",
|
|
CTLFLAG_RD, NULL, "rx queues");
|
|
}
|
|
for_each_rxq(vi, i, rxq) {
|
|
|
|
init_iq(&rxq->iq, sc, vi->tmr_idx, vi->pktc_idx, vi->qsize_rxq);
|
|
|
|
snprintf(name, sizeof(name), "%s rxq%d-fl",
|
|
device_get_nameunit(vi->dev), i);
|
|
init_fl(sc, &rxq->fl, vi->qsize_rxq / 8, maxp, name);
|
|
|
|
if (vi->flags & INTR_RXQ) {
|
|
rxq->iq.flags |= IQ_INTR;
|
|
rc = alloc_rxq(vi, rxq, intr_idx, i, oid);
|
|
if (rc != 0)
|
|
goto done;
|
|
intr_idx++;
|
|
}
|
|
}
|
|
#ifdef TCP_OFFLOAD
|
|
maxp = mtu_to_max_payload(sc, mtu, 1);
|
|
if (vi->flags & INTR_OFLD_RXQ) {
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "ofld_rxq",
|
|
CTLFLAG_RD, NULL,
|
|
"rx queues for offloaded TCP connections");
|
|
}
|
|
for_each_ofld_rxq(vi, i, ofld_rxq) {
|
|
|
|
init_iq(&ofld_rxq->iq, sc, vi->tmr_idx, vi->pktc_idx,
|
|
vi->qsize_rxq);
|
|
|
|
snprintf(name, sizeof(name), "%s ofld_rxq%d-fl",
|
|
device_get_nameunit(vi->dev), i);
|
|
init_fl(sc, &ofld_rxq->fl, vi->qsize_rxq / 8, maxp, name);
|
|
|
|
if (vi->flags & INTR_OFLD_RXQ) {
|
|
ofld_rxq->iq.flags |= IQ_INTR;
|
|
rc = alloc_ofld_rxq(vi, ofld_rxq, intr_idx, i, oid);
|
|
if (rc != 0)
|
|
goto done;
|
|
intr_idx++;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Second pass over all NIC and TOE rx queues. The queues forwarding
|
|
* their interrupts are allocated now.
|
|
*/
|
|
j = 0;
|
|
if (!(vi->flags & INTR_RXQ)) {
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "rxq",
|
|
CTLFLAG_RD, NULL, "rx queues");
|
|
for_each_rxq(vi, i, rxq) {
|
|
MPASS(!(rxq->iq.flags & IQ_INTR));
|
|
|
|
intr_idx = vi_intr_iq(vi, j)->abs_id;
|
|
|
|
rc = alloc_rxq(vi, rxq, intr_idx, i, oid);
|
|
if (rc != 0)
|
|
goto done;
|
|
j++;
|
|
}
|
|
}
|
|
#ifdef TCP_OFFLOAD
|
|
if (vi->nofldrxq != 0 && !(vi->flags & INTR_OFLD_RXQ)) {
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "ofld_rxq",
|
|
CTLFLAG_RD, NULL,
|
|
"rx queues for offloaded TCP connections");
|
|
for_each_ofld_rxq(vi, i, ofld_rxq) {
|
|
MPASS(!(ofld_rxq->iq.flags & IQ_INTR));
|
|
|
|
intr_idx = vi_intr_iq(vi, j)->abs_id;
|
|
|
|
rc = alloc_ofld_rxq(vi, ofld_rxq, intr_idx, i, oid);
|
|
if (rc != 0)
|
|
goto done;
|
|
j++;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Now the tx queues. Only one pass needed.
|
|
*/
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "txq", CTLFLAG_RD,
|
|
NULL, "tx queues");
|
|
j = 0;
|
|
for_each_txq(vi, i, txq) {
|
|
iqid = vi_intr_iq(vi, j)->cntxt_id;
|
|
snprintf(name, sizeof(name), "%s txq%d",
|
|
device_get_nameunit(vi->dev), i);
|
|
init_eq(sc, &txq->eq, EQ_ETH, vi->qsize_txq, pi->tx_chan, iqid,
|
|
name);
|
|
|
|
rc = alloc_txq(vi, txq, i, oid);
|
|
if (rc != 0)
|
|
goto done;
|
|
j++;
|
|
}
|
|
#ifdef TCP_OFFLOAD
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "ofld_txq",
|
|
CTLFLAG_RD, NULL, "tx queues for offloaded TCP connections");
|
|
for_each_ofld_txq(vi, i, ofld_txq) {
|
|
struct sysctl_oid *oid2;
|
|
|
|
iqid = vi_intr_iq(vi, j)->cntxt_id;
|
|
snprintf(name, sizeof(name), "%s ofld_txq%d",
|
|
device_get_nameunit(vi->dev), i);
|
|
init_eq(sc, &ofld_txq->eq, EQ_OFLD, vi->qsize_txq, pi->tx_chan,
|
|
iqid, name);
|
|
|
|
snprintf(name, sizeof(name), "%d", i);
|
|
oid2 = SYSCTL_ADD_NODE(&vi->ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
|
|
name, CTLFLAG_RD, NULL, "offload tx queue");
|
|
|
|
rc = alloc_wrq(sc, vi, ofld_txq, oid2);
|
|
if (rc != 0)
|
|
goto done;
|
|
j++;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Finally, the control queue.
|
|
*/
|
|
if (!IS_MAIN_VI(vi))
|
|
goto done;
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, "ctrlq", CTLFLAG_RD,
|
|
NULL, "ctrl queue");
|
|
ctrlq = &sc->sge.ctrlq[pi->port_id];
|
|
iqid = vi_intr_iq(vi, 0)->cntxt_id;
|
|
snprintf(name, sizeof(name), "%s ctrlq", device_get_nameunit(vi->dev));
|
|
init_eq(sc, &ctrlq->eq, EQ_CTRL, CTRL_EQ_QSIZE, pi->tx_chan, iqid,
|
|
name);
|
|
rc = alloc_wrq(sc, vi, ctrlq, oid);
|
|
|
|
done:
|
|
if (rc)
|
|
t4_teardown_vi_queues(vi);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
/*
|
|
* Idempotent
|
|
*/
|
|
int
|
|
t4_teardown_vi_queues(struct vi_info *vi)
|
|
{
|
|
int i;
|
|
struct port_info *pi = vi->pi;
|
|
struct adapter *sc = pi->adapter;
|
|
struct sge_rxq *rxq;
|
|
struct sge_txq *txq;
|
|
#ifdef TCP_OFFLOAD
|
|
struct sge_ofld_rxq *ofld_rxq;
|
|
struct sge_wrq *ofld_txq;
|
|
#endif
|
|
#ifdef DEV_NETMAP
|
|
struct sge_nm_rxq *nm_rxq;
|
|
struct sge_nm_txq *nm_txq;
|
|
#endif
|
|
|
|
/* Do this before freeing the queues */
|
|
if (vi->flags & VI_SYSCTL_CTX) {
|
|
sysctl_ctx_free(&vi->ctx);
|
|
vi->flags &= ~VI_SYSCTL_CTX;
|
|
}
|
|
|
|
#ifdef DEV_NETMAP
|
|
if (vi->flags & VI_NETMAP) {
|
|
for_each_nm_txq(vi, i, nm_txq) {
|
|
free_nm_txq(vi, nm_txq);
|
|
}
|
|
|
|
for_each_nm_rxq(vi, i, nm_rxq) {
|
|
free_nm_rxq(vi, nm_rxq);
|
|
}
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Take down all the tx queues first, as they reference the rx queues
|
|
* (for egress updates, etc.).
|
|
*/
|
|
|
|
if (IS_MAIN_VI(vi))
|
|
free_wrq(sc, &sc->sge.ctrlq[pi->port_id]);
|
|
|
|
for_each_txq(vi, i, txq) {
|
|
free_txq(vi, txq);
|
|
}
|
|
#ifdef TCP_OFFLOAD
|
|
for_each_ofld_txq(vi, i, ofld_txq) {
|
|
free_wrq(sc, ofld_txq);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Then take down the rx queues that forward their interrupts, as they
|
|
* reference other rx queues.
|
|
*/
|
|
|
|
for_each_rxq(vi, i, rxq) {
|
|
if ((rxq->iq.flags & IQ_INTR) == 0)
|
|
free_rxq(vi, rxq);
|
|
}
|
|
#ifdef TCP_OFFLOAD
|
|
for_each_ofld_rxq(vi, i, ofld_rxq) {
|
|
if ((ofld_rxq->iq.flags & IQ_INTR) == 0)
|
|
free_ofld_rxq(vi, ofld_rxq);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Then take down the rx queues that take direct interrupts.
|
|
*/
|
|
|
|
for_each_rxq(vi, i, rxq) {
|
|
if (rxq->iq.flags & IQ_INTR)
|
|
free_rxq(vi, rxq);
|
|
}
|
|
#ifdef TCP_OFFLOAD
|
|
for_each_ofld_rxq(vi, i, ofld_rxq) {
|
|
if (ofld_rxq->iq.flags & IQ_INTR)
|
|
free_ofld_rxq(vi, ofld_rxq);
|
|
}
|
|
#endif
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Deals with errors and the firmware event queue. All data rx queues forward
|
|
* their interrupt to the firmware event queue.
|
|
*/
|
|
void
|
|
t4_intr_all(void *arg)
|
|
{
|
|
struct adapter *sc = arg;
|
|
struct sge_iq *fwq = &sc->sge.fwq;
|
|
|
|
t4_intr_err(arg);
|
|
if (atomic_cmpset_int(&fwq->state, IQS_IDLE, IQS_BUSY)) {
|
|
service_iq(fwq, 0);
|
|
atomic_cmpset_int(&fwq->state, IQS_BUSY, IQS_IDLE);
|
|
}
|
|
}
|
|
|
|
/* Deals with error interrupts */
|
|
void
|
|
t4_intr_err(void *arg)
|
|
{
|
|
struct adapter *sc = arg;
|
|
|
|
t4_write_reg(sc, MYPF_REG(A_PCIE_PF_CLI), 0);
|
|
t4_slow_intr_handler(sc);
|
|
}
|
|
|
|
void
|
|
t4_intr_evt(void *arg)
|
|
{
|
|
struct sge_iq *iq = arg;
|
|
|
|
if (atomic_cmpset_int(&iq->state, IQS_IDLE, IQS_BUSY)) {
|
|
service_iq(iq, 0);
|
|
atomic_cmpset_int(&iq->state, IQS_BUSY, IQS_IDLE);
|
|
}
|
|
}
|
|
|
|
void
|
|
t4_intr(void *arg)
|
|
{
|
|
struct sge_iq *iq = arg;
|
|
|
|
if (atomic_cmpset_int(&iq->state, IQS_IDLE, IQS_BUSY)) {
|
|
service_iq(iq, 0);
|
|
atomic_cmpset_int(&iq->state, IQS_BUSY, IQS_IDLE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Deals with anything and everything on the given ingress queue.
|
|
*/
|
|
static int
|
|
service_iq(struct sge_iq *iq, int budget)
|
|
{
|
|
struct sge_iq *q;
|
|
struct sge_rxq *rxq = iq_to_rxq(iq); /* Use iff iq is part of rxq */
|
|
struct sge_fl *fl; /* Use iff IQ_HAS_FL */
|
|
struct adapter *sc = iq->adapter;
|
|
struct iq_desc *d = &iq->desc[iq->cidx];
|
|
int ndescs = 0, limit;
|
|
int rsp_type, refill;
|
|
uint32_t lq;
|
|
uint16_t fl_hw_cidx;
|
|
struct mbuf *m0;
|
|
STAILQ_HEAD(, sge_iq) iql = STAILQ_HEAD_INITIALIZER(iql);
|
|
#if defined(INET) || defined(INET6)
|
|
const struct timeval lro_timeout = {0, sc->lro_timeout};
|
|
#endif
|
|
|
|
KASSERT(iq->state == IQS_BUSY, ("%s: iq %p not BUSY", __func__, iq));
|
|
|
|
limit = budget ? budget : iq->qsize / 16;
|
|
|
|
if (iq->flags & IQ_HAS_FL) {
|
|
fl = &rxq->fl;
|
|
fl_hw_cidx = fl->hw_cidx; /* stable snapshot */
|
|
} else {
|
|
fl = NULL;
|
|
fl_hw_cidx = 0; /* to silence gcc warning */
|
|
}
|
|
|
|
/*
|
|
* We always come back and check the descriptor ring for new indirect
|
|
* interrupts and other responses after running a single handler.
|
|
*/
|
|
for (;;) {
|
|
while ((d->rsp.u.type_gen & F_RSPD_GEN) == iq->gen) {
|
|
|
|
rmb();
|
|
|
|
refill = 0;
|
|
m0 = NULL;
|
|
rsp_type = G_RSPD_TYPE(d->rsp.u.type_gen);
|
|
lq = be32toh(d->rsp.pldbuflen_qid);
|
|
|
|
switch (rsp_type) {
|
|
case X_RSPD_TYPE_FLBUF:
|
|
|
|
KASSERT(iq->flags & IQ_HAS_FL,
|
|
("%s: data for an iq (%p) with no freelist",
|
|
__func__, iq));
|
|
|
|
m0 = get_fl_payload(sc, fl, lq);
|
|
if (__predict_false(m0 == NULL))
|
|
goto process_iql;
|
|
refill = IDXDIFF(fl->hw_cidx, fl_hw_cidx, fl->sidx) > 2;
|
|
#ifdef T4_PKT_TIMESTAMP
|
|
/*
|
|
* 60 bit timestamp for the payload is
|
|
* *(uint64_t *)m0->m_pktdat. Note that it is
|
|
* in the leading free-space in the mbuf. The
|
|
* kernel can clobber it during a pullup,
|
|
* m_copymdata, etc. You need to make sure that
|
|
* the mbuf reaches you unmolested if you care
|
|
* about the timestamp.
|
|
*/
|
|
*(uint64_t *)m0->m_pktdat =
|
|
be64toh(ctrl->u.last_flit) &
|
|
0xfffffffffffffff;
|
|
#endif
|
|
|
|
/* fall through */
|
|
|
|
case X_RSPD_TYPE_CPL:
|
|
KASSERT(d->rss.opcode < NUM_CPL_CMDS,
|
|
("%s: bad opcode %02x.", __func__,
|
|
d->rss.opcode));
|
|
sc->cpl_handler[d->rss.opcode](iq, &d->rss, m0);
|
|
break;
|
|
|
|
case X_RSPD_TYPE_INTR:
|
|
|
|
/*
|
|
* Interrupts should be forwarded only to queues
|
|
* that are not forwarding their interrupts.
|
|
* This means service_iq can recurse but only 1
|
|
* level deep.
|
|
*/
|
|
KASSERT(budget == 0,
|
|
("%s: budget %u, rsp_type %u", __func__,
|
|
budget, rsp_type));
|
|
|
|
/*
|
|
* There are 1K interrupt-capable queues (qids 0
|
|
* through 1023). A response type indicating a
|
|
* forwarded interrupt with a qid >= 1K is an
|
|
* iWARP async notification.
|
|
*/
|
|
if (lq >= 1024) {
|
|
sc->an_handler(iq, &d->rsp);
|
|
break;
|
|
}
|
|
|
|
q = sc->sge.iqmap[lq - sc->sge.iq_start];
|
|
if (atomic_cmpset_int(&q->state, IQS_IDLE,
|
|
IQS_BUSY)) {
|
|
if (service_iq(q, q->qsize / 16) == 0) {
|
|
atomic_cmpset_int(&q->state,
|
|
IQS_BUSY, IQS_IDLE);
|
|
} else {
|
|
STAILQ_INSERT_TAIL(&iql, q,
|
|
link);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
KASSERT(0,
|
|
("%s: illegal response type %d on iq %p",
|
|
__func__, rsp_type, iq));
|
|
log(LOG_ERR,
|
|
"%s: illegal response type %d on iq %p",
|
|
device_get_nameunit(sc->dev), rsp_type, iq);
|
|
break;
|
|
}
|
|
|
|
d++;
|
|
if (__predict_false(++iq->cidx == iq->sidx)) {
|
|
iq->cidx = 0;
|
|
iq->gen ^= F_RSPD_GEN;
|
|
d = &iq->desc[0];
|
|
}
|
|
if (__predict_false(++ndescs == limit)) {
|
|
t4_write_reg(sc, MYPF_REG(A_SGE_PF_GTS),
|
|
V_CIDXINC(ndescs) |
|
|
V_INGRESSQID(iq->cntxt_id) |
|
|
V_SEINTARM(V_QINTR_TIMER_IDX(X_TIMERREG_UPDATE_CIDX)));
|
|
ndescs = 0;
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
if (iq->flags & IQ_LRO_ENABLED &&
|
|
sc->lro_timeout != 0) {
|
|
tcp_lro_flush_inactive(&rxq->lro,
|
|
&lro_timeout);
|
|
}
|
|
#endif
|
|
|
|
if (budget) {
|
|
if (iq->flags & IQ_HAS_FL) {
|
|
FL_LOCK(fl);
|
|
refill_fl(sc, fl, 32);
|
|
FL_UNLOCK(fl);
|
|
}
|
|
return (EINPROGRESS);
|
|
}
|
|
}
|
|
if (refill) {
|
|
FL_LOCK(fl);
|
|
refill_fl(sc, fl, 32);
|
|
FL_UNLOCK(fl);
|
|
fl_hw_cidx = fl->hw_cidx;
|
|
}
|
|
}
|
|
|
|
process_iql:
|
|
if (STAILQ_EMPTY(&iql))
|
|
break;
|
|
|
|
/*
|
|
* Process the head only, and send it to the back of the list if
|
|
* it's still not done.
|
|
*/
|
|
q = STAILQ_FIRST(&iql);
|
|
STAILQ_REMOVE_HEAD(&iql, link);
|
|
if (service_iq(q, q->qsize / 8) == 0)
|
|
atomic_cmpset_int(&q->state, IQS_BUSY, IQS_IDLE);
|
|
else
|
|
STAILQ_INSERT_TAIL(&iql, q, link);
|
|
}
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
if (iq->flags & IQ_LRO_ENABLED) {
|
|
struct lro_ctrl *lro = &rxq->lro;
|
|
|
|
tcp_lro_flush_all(lro);
|
|
}
|
|
#endif
|
|
|
|
t4_write_reg(sc, MYPF_REG(A_SGE_PF_GTS), V_CIDXINC(ndescs) |
|
|
V_INGRESSQID((u32)iq->cntxt_id) | V_SEINTARM(iq->intr_params));
|
|
|
|
if (iq->flags & IQ_HAS_FL) {
|
|
int starved;
|
|
|
|
FL_LOCK(fl);
|
|
starved = refill_fl(sc, fl, 64);
|
|
FL_UNLOCK(fl);
|
|
if (__predict_false(starved != 0))
|
|
add_fl_to_sfl(sc, fl);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static inline int
|
|
cl_has_metadata(struct sge_fl *fl, struct cluster_layout *cll)
|
|
{
|
|
int rc = fl->flags & FL_BUF_PACKING || cll->region1 > 0;
|
|
|
|
if (rc)
|
|
MPASS(cll->region3 >= CL_METADATA_SIZE);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static inline struct cluster_metadata *
|
|
cl_metadata(struct adapter *sc, struct sge_fl *fl, struct cluster_layout *cll,
|
|
caddr_t cl)
|
|
{
|
|
|
|
if (cl_has_metadata(fl, cll)) {
|
|
struct sw_zone_info *swz = &sc->sge.sw_zone_info[cll->zidx];
|
|
|
|
return ((struct cluster_metadata *)(cl + swz->size) - 1);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
static void
|
|
rxb_free(struct mbuf *m, void *arg1, void *arg2)
|
|
{
|
|
uma_zone_t zone = arg1;
|
|
caddr_t cl = arg2;
|
|
|
|
uma_zfree(zone, cl);
|
|
counter_u64_add(extfree_rels, 1);
|
|
}
|
|
|
|
/*
|
|
* The mbuf returned by this function could be allocated from zone_mbuf or
|
|
* constructed in spare room in the cluster.
|
|
*
|
|
* The mbuf carries the payload in one of these ways
|
|
* a) frame inside the mbuf (mbuf from zone_mbuf)
|
|
* b) m_cljset (for clusters without metadata) zone_mbuf
|
|
* c) m_extaddref (cluster with metadata) inline mbuf
|
|
* d) m_extaddref (cluster with metadata) zone_mbuf
|
|
*/
|
|
static struct mbuf *
|
|
get_scatter_segment(struct adapter *sc, struct sge_fl *fl, int fr_offset,
|
|
int remaining)
|
|
{
|
|
struct mbuf *m;
|
|
struct fl_sdesc *sd = &fl->sdesc[fl->cidx];
|
|
struct cluster_layout *cll = &sd->cll;
|
|
struct sw_zone_info *swz = &sc->sge.sw_zone_info[cll->zidx];
|
|
struct hw_buf_info *hwb = &sc->sge.hw_buf_info[cll->hwidx];
|
|
struct cluster_metadata *clm = cl_metadata(sc, fl, cll, sd->cl);
|
|
int len, blen;
|
|
caddr_t payload;
|
|
|
|
blen = hwb->size - fl->rx_offset; /* max possible in this buf */
|
|
len = min(remaining, blen);
|
|
payload = sd->cl + cll->region1 + fl->rx_offset;
|
|
if (fl->flags & FL_BUF_PACKING) {
|
|
const u_int l = fr_offset + len;
|
|
const u_int pad = roundup2(l, fl->buf_boundary) - l;
|
|
|
|
if (fl->rx_offset + len + pad < hwb->size)
|
|
blen = len + pad;
|
|
MPASS(fl->rx_offset + blen <= hwb->size);
|
|
} else {
|
|
MPASS(fl->rx_offset == 0); /* not packing */
|
|
}
|
|
|
|
|
|
if (sc->sc_do_rxcopy && len < RX_COPY_THRESHOLD) {
|
|
|
|
/*
|
|
* Copy payload into a freshly allocated mbuf.
|
|
*/
|
|
|
|
m = fr_offset == 0 ?
|
|
m_gethdr(M_NOWAIT, MT_DATA) : m_get(M_NOWAIT, MT_DATA);
|
|
if (m == NULL)
|
|
return (NULL);
|
|
fl->mbuf_allocated++;
|
|
#ifdef T4_PKT_TIMESTAMP
|
|
/* Leave room for a timestamp */
|
|
m->m_data += 8;
|
|
#endif
|
|
/* copy data to mbuf */
|
|
bcopy(payload, mtod(m, caddr_t), len);
|
|
|
|
} else if (sd->nmbuf * MSIZE < cll->region1) {
|
|
|
|
/*
|
|
* There's spare room in the cluster for an mbuf. Create one
|
|
* and associate it with the payload that's in the cluster.
|
|
*/
|
|
|
|
MPASS(clm != NULL);
|
|
m = (struct mbuf *)(sd->cl + sd->nmbuf * MSIZE);
|
|
/* No bzero required */
|
|
if (m_init(m, M_NOWAIT, MT_DATA,
|
|
fr_offset == 0 ? M_PKTHDR | M_NOFREE : M_NOFREE))
|
|
return (NULL);
|
|
fl->mbuf_inlined++;
|
|
m_extaddref(m, payload, blen, &clm->refcount, rxb_free,
|
|
swz->zone, sd->cl);
|
|
if (sd->nmbuf++ == 0)
|
|
counter_u64_add(extfree_refs, 1);
|
|
|
|
} else {
|
|
|
|
/*
|
|
* Grab an mbuf from zone_mbuf and associate it with the
|
|
* payload in the cluster.
|
|
*/
|
|
|
|
m = fr_offset == 0 ?
|
|
m_gethdr(M_NOWAIT, MT_DATA) : m_get(M_NOWAIT, MT_DATA);
|
|
if (m == NULL)
|
|
return (NULL);
|
|
fl->mbuf_allocated++;
|
|
if (clm != NULL) {
|
|
m_extaddref(m, payload, blen, &clm->refcount,
|
|
rxb_free, swz->zone, sd->cl);
|
|
if (sd->nmbuf++ == 0)
|
|
counter_u64_add(extfree_refs, 1);
|
|
} else {
|
|
m_cljset(m, sd->cl, swz->type);
|
|
sd->cl = NULL; /* consumed, not a recycle candidate */
|
|
}
|
|
}
|
|
if (fr_offset == 0)
|
|
m->m_pkthdr.len = remaining;
|
|
m->m_len = len;
|
|
|
|
if (fl->flags & FL_BUF_PACKING) {
|
|
fl->rx_offset += blen;
|
|
MPASS(fl->rx_offset <= hwb->size);
|
|
if (fl->rx_offset < hwb->size)
|
|
return (m); /* without advancing the cidx */
|
|
}
|
|
|
|
if (__predict_false(++fl->cidx % 8 == 0)) {
|
|
uint16_t cidx = fl->cidx / 8;
|
|
|
|
if (__predict_false(cidx == fl->sidx))
|
|
fl->cidx = cidx = 0;
|
|
fl->hw_cidx = cidx;
|
|
}
|
|
fl->rx_offset = 0;
|
|
|
|
return (m);
|
|
}
|
|
|
|
static struct mbuf *
|
|
get_fl_payload(struct adapter *sc, struct sge_fl *fl, uint32_t len_newbuf)
|
|
{
|
|
struct mbuf *m0, *m, **pnext;
|
|
u_int remaining;
|
|
const u_int total = G_RSPD_LEN(len_newbuf);
|
|
|
|
if (__predict_false(fl->flags & FL_BUF_RESUME)) {
|
|
M_ASSERTPKTHDR(fl->m0);
|
|
MPASS(fl->m0->m_pkthdr.len == total);
|
|
MPASS(fl->remaining < total);
|
|
|
|
m0 = fl->m0;
|
|
pnext = fl->pnext;
|
|
remaining = fl->remaining;
|
|
fl->flags &= ~FL_BUF_RESUME;
|
|
goto get_segment;
|
|
}
|
|
|
|
if (fl->rx_offset > 0 && len_newbuf & F_RSPD_NEWBUF) {
|
|
fl->rx_offset = 0;
|
|
if (__predict_false(++fl->cidx % 8 == 0)) {
|
|
uint16_t cidx = fl->cidx / 8;
|
|
|
|
if (__predict_false(cidx == fl->sidx))
|
|
fl->cidx = cidx = 0;
|
|
fl->hw_cidx = cidx;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Payload starts at rx_offset in the current hw buffer. Its length is
|
|
* 'len' and it may span multiple hw buffers.
|
|
*/
|
|
|
|
m0 = get_scatter_segment(sc, fl, 0, total);
|
|
if (m0 == NULL)
|
|
return (NULL);
|
|
remaining = total - m0->m_len;
|
|
pnext = &m0->m_next;
|
|
while (remaining > 0) {
|
|
get_segment:
|
|
MPASS(fl->rx_offset == 0);
|
|
m = get_scatter_segment(sc, fl, total - remaining, remaining);
|
|
if (__predict_false(m == NULL)) {
|
|
fl->m0 = m0;
|
|
fl->pnext = pnext;
|
|
fl->remaining = remaining;
|
|
fl->flags |= FL_BUF_RESUME;
|
|
return (NULL);
|
|
}
|
|
*pnext = m;
|
|
pnext = &m->m_next;
|
|
remaining -= m->m_len;
|
|
}
|
|
*pnext = NULL;
|
|
|
|
M_ASSERTPKTHDR(m0);
|
|
return (m0);
|
|
}
|
|
|
|
static int
|
|
t4_eth_rx(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m0)
|
|
{
|
|
struct sge_rxq *rxq = iq_to_rxq(iq);
|
|
struct ifnet *ifp = rxq->ifp;
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_rx_pkt *cpl = (const void *)(rss + 1);
|
|
#if defined(INET) || defined(INET6)
|
|
struct lro_ctrl *lro = &rxq->lro;
|
|
#endif
|
|
static const int sw_hashtype[4][2] = {
|
|
{M_HASHTYPE_NONE, M_HASHTYPE_NONE},
|
|
{M_HASHTYPE_RSS_IPV4, M_HASHTYPE_RSS_IPV6},
|
|
{M_HASHTYPE_RSS_TCP_IPV4, M_HASHTYPE_RSS_TCP_IPV6},
|
|
{M_HASHTYPE_RSS_UDP_IPV4, M_HASHTYPE_RSS_UDP_IPV6},
|
|
};
|
|
|
|
KASSERT(m0 != NULL, ("%s: no payload with opcode %02x", __func__,
|
|
rss->opcode));
|
|
|
|
m0->m_pkthdr.len -= sc->params.sge.fl_pktshift;
|
|
m0->m_len -= sc->params.sge.fl_pktshift;
|
|
m0->m_data += sc->params.sge.fl_pktshift;
|
|
|
|
m0->m_pkthdr.rcvif = ifp;
|
|
M_HASHTYPE_SET(m0, sw_hashtype[rss->hash_type][rss->ipv6]);
|
|
m0->m_pkthdr.flowid = be32toh(rss->hash_val);
|
|
|
|
if (cpl->csum_calc && !cpl->err_vec) {
|
|
if (ifp->if_capenable & IFCAP_RXCSUM &&
|
|
cpl->l2info & htobe32(F_RXF_IP)) {
|
|
m0->m_pkthdr.csum_flags = (CSUM_IP_CHECKED |
|
|
CSUM_IP_VALID | CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
|
|
rxq->rxcsum++;
|
|
} else if (ifp->if_capenable & IFCAP_RXCSUM_IPV6 &&
|
|
cpl->l2info & htobe32(F_RXF_IP6)) {
|
|
m0->m_pkthdr.csum_flags = (CSUM_DATA_VALID_IPV6 |
|
|
CSUM_PSEUDO_HDR);
|
|
rxq->rxcsum++;
|
|
}
|
|
|
|
if (__predict_false(cpl->ip_frag))
|
|
m0->m_pkthdr.csum_data = be16toh(cpl->csum);
|
|
else
|
|
m0->m_pkthdr.csum_data = 0xffff;
|
|
}
|
|
|
|
if (cpl->vlan_ex) {
|
|
m0->m_pkthdr.ether_vtag = be16toh(cpl->vlan);
|
|
m0->m_flags |= M_VLANTAG;
|
|
rxq->vlan_extraction++;
|
|
}
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
if (cpl->l2info & htobe32(F_RXF_LRO) &&
|
|
iq->flags & IQ_LRO_ENABLED &&
|
|
tcp_lro_rx(lro, m0, 0) == 0) {
|
|
/* queued for LRO */
|
|
} else
|
|
#endif
|
|
ifp->if_input(ifp, m0);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Must drain the wrq or make sure that someone else will.
|
|
*/
|
|
static void
|
|
wrq_tx_drain(void *arg, int n)
|
|
{
|
|
struct sge_wrq *wrq = arg;
|
|
struct sge_eq *eq = &wrq->eq;
|
|
|
|
EQ_LOCK(eq);
|
|
if (TAILQ_EMPTY(&wrq->incomplete_wrs) && !STAILQ_EMPTY(&wrq->wr_list))
|
|
drain_wrq_wr_list(wrq->adapter, wrq);
|
|
EQ_UNLOCK(eq);
|
|
}
|
|
|
|
static void
|
|
drain_wrq_wr_list(struct adapter *sc, struct sge_wrq *wrq)
|
|
{
|
|
struct sge_eq *eq = &wrq->eq;
|
|
u_int available, dbdiff; /* # of hardware descriptors */
|
|
u_int n;
|
|
struct wrqe *wr;
|
|
struct fw_eth_tx_pkt_wr *dst; /* any fw WR struct will do */
|
|
|
|
EQ_LOCK_ASSERT_OWNED(eq);
|
|
MPASS(TAILQ_EMPTY(&wrq->incomplete_wrs));
|
|
wr = STAILQ_FIRST(&wrq->wr_list);
|
|
MPASS(wr != NULL); /* Must be called with something useful to do */
|
|
MPASS(eq->pidx == eq->dbidx);
|
|
dbdiff = 0;
|
|
|
|
do {
|
|
eq->cidx = read_hw_cidx(eq);
|
|
if (eq->pidx == eq->cidx)
|
|
available = eq->sidx - 1;
|
|
else
|
|
available = IDXDIFF(eq->cidx, eq->pidx, eq->sidx) - 1;
|
|
|
|
MPASS(wr->wrq == wrq);
|
|
n = howmany(wr->wr_len, EQ_ESIZE);
|
|
if (available < n)
|
|
break;
|
|
|
|
dst = (void *)&eq->desc[eq->pidx];
|
|
if (__predict_true(eq->sidx - eq->pidx > n)) {
|
|
/* Won't wrap, won't end exactly at the status page. */
|
|
bcopy(&wr->wr[0], dst, wr->wr_len);
|
|
eq->pidx += n;
|
|
} else {
|
|
int first_portion = (eq->sidx - eq->pidx) * EQ_ESIZE;
|
|
|
|
bcopy(&wr->wr[0], dst, first_portion);
|
|
if (wr->wr_len > first_portion) {
|
|
bcopy(&wr->wr[first_portion], &eq->desc[0],
|
|
wr->wr_len - first_portion);
|
|
}
|
|
eq->pidx = n - (eq->sidx - eq->pidx);
|
|
}
|
|
|
|
if (available < eq->sidx / 4 &&
|
|
atomic_cmpset_int(&eq->equiq, 0, 1)) {
|
|
dst->equiq_to_len16 |= htobe32(F_FW_WR_EQUIQ |
|
|
F_FW_WR_EQUEQ);
|
|
eq->equeqidx = eq->pidx;
|
|
} else if (IDXDIFF(eq->pidx, eq->equeqidx, eq->sidx) >= 32) {
|
|
dst->equiq_to_len16 |= htobe32(F_FW_WR_EQUEQ);
|
|
eq->equeqidx = eq->pidx;
|
|
}
|
|
|
|
dbdiff += n;
|
|
if (dbdiff >= 16) {
|
|
ring_eq_db(sc, eq, dbdiff);
|
|
dbdiff = 0;
|
|
}
|
|
|
|
STAILQ_REMOVE_HEAD(&wrq->wr_list, link);
|
|
free_wrqe(wr);
|
|
MPASS(wrq->nwr_pending > 0);
|
|
wrq->nwr_pending--;
|
|
MPASS(wrq->ndesc_needed >= n);
|
|
wrq->ndesc_needed -= n;
|
|
} while ((wr = STAILQ_FIRST(&wrq->wr_list)) != NULL);
|
|
|
|
if (dbdiff)
|
|
ring_eq_db(sc, eq, dbdiff);
|
|
}
|
|
|
|
/*
|
|
* Doesn't fail. Holds on to work requests it can't send right away.
|
|
*/
|
|
void
|
|
t4_wrq_tx_locked(struct adapter *sc, struct sge_wrq *wrq, struct wrqe *wr)
|
|
{
|
|
#ifdef INVARIANTS
|
|
struct sge_eq *eq = &wrq->eq;
|
|
#endif
|
|
|
|
EQ_LOCK_ASSERT_OWNED(eq);
|
|
MPASS(wr != NULL);
|
|
MPASS(wr->wr_len > 0 && wr->wr_len <= SGE_MAX_WR_LEN);
|
|
MPASS((wr->wr_len & 0x7) == 0);
|
|
|
|
STAILQ_INSERT_TAIL(&wrq->wr_list, wr, link);
|
|
wrq->nwr_pending++;
|
|
wrq->ndesc_needed += howmany(wr->wr_len, EQ_ESIZE);
|
|
|
|
if (!TAILQ_EMPTY(&wrq->incomplete_wrs))
|
|
return; /* commit_wrq_wr will drain wr_list as well. */
|
|
|
|
drain_wrq_wr_list(sc, wrq);
|
|
|
|
/* Doorbell must have caught up to the pidx. */
|
|
MPASS(eq->pidx == eq->dbidx);
|
|
}
|
|
|
|
void
|
|
t4_update_fl_bufsize(struct ifnet *ifp)
|
|
{
|
|
struct vi_info *vi = ifp->if_softc;
|
|
struct adapter *sc = vi->pi->adapter;
|
|
struct sge_rxq *rxq;
|
|
#ifdef TCP_OFFLOAD
|
|
struct sge_ofld_rxq *ofld_rxq;
|
|
#endif
|
|
struct sge_fl *fl;
|
|
int i, maxp, mtu = ifp->if_mtu;
|
|
|
|
maxp = mtu_to_max_payload(sc, mtu, 0);
|
|
for_each_rxq(vi, i, rxq) {
|
|
fl = &rxq->fl;
|
|
|
|
FL_LOCK(fl);
|
|
find_best_refill_source(sc, fl, maxp);
|
|
FL_UNLOCK(fl);
|
|
}
|
|
#ifdef TCP_OFFLOAD
|
|
maxp = mtu_to_max_payload(sc, mtu, 1);
|
|
for_each_ofld_rxq(vi, i, ofld_rxq) {
|
|
fl = &ofld_rxq->fl;
|
|
|
|
FL_LOCK(fl);
|
|
find_best_refill_source(sc, fl, maxp);
|
|
FL_UNLOCK(fl);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static inline int
|
|
mbuf_nsegs(struct mbuf *m)
|
|
{
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
KASSERT(m->m_pkthdr.l5hlen > 0,
|
|
("%s: mbuf %p missing information on # of segments.", __func__, m));
|
|
|
|
return (m->m_pkthdr.l5hlen);
|
|
}
|
|
|
|
static inline void
|
|
set_mbuf_nsegs(struct mbuf *m, uint8_t nsegs)
|
|
{
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
m->m_pkthdr.l5hlen = nsegs;
|
|
}
|
|
|
|
static inline int
|
|
mbuf_len16(struct mbuf *m)
|
|
{
|
|
int n;
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
n = m->m_pkthdr.PH_loc.eight[0];
|
|
MPASS(n > 0 && n <= SGE_MAX_WR_LEN / 16);
|
|
|
|
return (n);
|
|
}
|
|
|
|
static inline void
|
|
set_mbuf_len16(struct mbuf *m, uint8_t len16)
|
|
{
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
m->m_pkthdr.PH_loc.eight[0] = len16;
|
|
}
|
|
|
|
static inline int
|
|
needs_tso(struct mbuf *m)
|
|
{
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
|
|
if (m->m_pkthdr.csum_flags & CSUM_TSO) {
|
|
KASSERT(m->m_pkthdr.tso_segsz > 0,
|
|
("%s: TSO requested in mbuf %p but MSS not provided",
|
|
__func__, m));
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static inline int
|
|
needs_l3_csum(struct mbuf *m)
|
|
{
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
|
|
if (m->m_pkthdr.csum_flags & (CSUM_IP | CSUM_TSO))
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
static inline int
|
|
needs_l4_csum(struct mbuf *m)
|
|
{
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
|
|
if (m->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP | CSUM_UDP_IPV6 |
|
|
CSUM_TCP_IPV6 | CSUM_TSO))
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
static inline int
|
|
needs_vlan_insertion(struct mbuf *m)
|
|
{
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
|
|
if (m->m_flags & M_VLANTAG) {
|
|
KASSERT(m->m_pkthdr.ether_vtag != 0,
|
|
("%s: HWVLAN requested in mbuf %p but tag not provided",
|
|
__func__, m));
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void *
|
|
m_advance(struct mbuf **pm, int *poffset, int len)
|
|
{
|
|
struct mbuf *m = *pm;
|
|
int offset = *poffset;
|
|
uintptr_t p = 0;
|
|
|
|
MPASS(len > 0);
|
|
|
|
while (len) {
|
|
if (offset + len < m->m_len) {
|
|
offset += len;
|
|
p = mtod(m, uintptr_t) + offset;
|
|
break;
|
|
}
|
|
len -= m->m_len - offset;
|
|
m = m->m_next;
|
|
offset = 0;
|
|
MPASS(m != NULL);
|
|
}
|
|
*poffset = offset;
|
|
*pm = m;
|
|
return ((void *)p);
|
|
}
|
|
|
|
static inline int
|
|
same_paddr(char *a, char *b)
|
|
{
|
|
|
|
if (a == b)
|
|
return (1);
|
|
else if (a != NULL && b != NULL) {
|
|
vm_offset_t x = (vm_offset_t)a;
|
|
vm_offset_t y = (vm_offset_t)b;
|
|
|
|
if ((x & PAGE_MASK) == (y & PAGE_MASK) &&
|
|
pmap_kextract(x) == pmap_kextract(y))
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Can deal with empty mbufs in the chain that have m_len = 0, but the chain
|
|
* must have at least one mbuf that's not empty.
|
|
*/
|
|
static inline int
|
|
count_mbuf_nsegs(struct mbuf *m)
|
|
{
|
|
char *prev_end, *start;
|
|
int len, nsegs;
|
|
|
|
MPASS(m != NULL);
|
|
|
|
nsegs = 0;
|
|
prev_end = NULL;
|
|
for (; m; m = m->m_next) {
|
|
|
|
len = m->m_len;
|
|
if (__predict_false(len == 0))
|
|
continue;
|
|
start = mtod(m, char *);
|
|
|
|
nsegs += sglist_count(start, len);
|
|
if (same_paddr(prev_end, start))
|
|
nsegs--;
|
|
prev_end = start + len;
|
|
}
|
|
|
|
MPASS(nsegs > 0);
|
|
return (nsegs);
|
|
}
|
|
|
|
/*
|
|
* Analyze the mbuf to determine its tx needs. The mbuf passed in may change:
|
|
* a) caller can assume it's been freed if this function returns with an error.
|
|
* b) it may get defragged up if the gather list is too long for the hardware.
|
|
*/
|
|
int
|
|
parse_pkt(struct mbuf **mp)
|
|
{
|
|
struct mbuf *m0 = *mp, *m;
|
|
int rc, nsegs, defragged = 0, offset;
|
|
struct ether_header *eh;
|
|
void *l3hdr;
|
|
#if defined(INET) || defined(INET6)
|
|
struct tcphdr *tcp;
|
|
#endif
|
|
uint16_t eh_type;
|
|
|
|
M_ASSERTPKTHDR(m0);
|
|
if (__predict_false(m0->m_pkthdr.len < ETHER_HDR_LEN)) {
|
|
rc = EINVAL;
|
|
fail:
|
|
m_freem(m0);
|
|
*mp = NULL;
|
|
return (rc);
|
|
}
|
|
restart:
|
|
/*
|
|
* First count the number of gather list segments in the payload.
|
|
* Defrag the mbuf if nsegs exceeds the hardware limit.
|
|
*/
|
|
M_ASSERTPKTHDR(m0);
|
|
MPASS(m0->m_pkthdr.len > 0);
|
|
nsegs = count_mbuf_nsegs(m0);
|
|
if (nsegs > (needs_tso(m0) ? TX_SGL_SEGS_TSO : TX_SGL_SEGS)) {
|
|
if (defragged++ > 0 || (m = m_defrag(m0, M_NOWAIT)) == NULL) {
|
|
rc = EFBIG;
|
|
goto fail;
|
|
}
|
|
*mp = m0 = m; /* update caller's copy after defrag */
|
|
goto restart;
|
|
}
|
|
|
|
if (__predict_false(nsegs > 2 && m0->m_pkthdr.len <= MHLEN)) {
|
|
m0 = m_pullup(m0, m0->m_pkthdr.len);
|
|
if (m0 == NULL) {
|
|
/* Should have left well enough alone. */
|
|
rc = EFBIG;
|
|
goto fail;
|
|
}
|
|
*mp = m0; /* update caller's copy after pullup */
|
|
goto restart;
|
|
}
|
|
set_mbuf_nsegs(m0, nsegs);
|
|
set_mbuf_len16(m0, txpkt_len16(nsegs, needs_tso(m0)));
|
|
|
|
if (!needs_tso(m0))
|
|
return (0);
|
|
|
|
m = m0;
|
|
eh = mtod(m, struct ether_header *);
|
|
eh_type = ntohs(eh->ether_type);
|
|
if (eh_type == ETHERTYPE_VLAN) {
|
|
struct ether_vlan_header *evh = (void *)eh;
|
|
|
|
eh_type = ntohs(evh->evl_proto);
|
|
m0->m_pkthdr.l2hlen = sizeof(*evh);
|
|
} else
|
|
m0->m_pkthdr.l2hlen = sizeof(*eh);
|
|
|
|
offset = 0;
|
|
l3hdr = m_advance(&m, &offset, m0->m_pkthdr.l2hlen);
|
|
|
|
switch (eh_type) {
|
|
#ifdef INET6
|
|
case ETHERTYPE_IPV6:
|
|
{
|
|
struct ip6_hdr *ip6 = l3hdr;
|
|
|
|
MPASS(ip6->ip6_nxt == IPPROTO_TCP);
|
|
|
|
m0->m_pkthdr.l3hlen = sizeof(*ip6);
|
|
break;
|
|
}
|
|
#endif
|
|
#ifdef INET
|
|
case ETHERTYPE_IP:
|
|
{
|
|
struct ip *ip = l3hdr;
|
|
|
|
m0->m_pkthdr.l3hlen = ip->ip_hl * 4;
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
panic("%s: ethertype 0x%04x unknown. if_cxgbe must be compiled"
|
|
" with the same INET/INET6 options as the kernel.",
|
|
__func__, eh_type);
|
|
}
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
tcp = m_advance(&m, &offset, m0->m_pkthdr.l3hlen);
|
|
m0->m_pkthdr.l4hlen = tcp->th_off * 4;
|
|
#endif
|
|
MPASS(m0 == *mp);
|
|
return (0);
|
|
}
|
|
|
|
void *
|
|
start_wrq_wr(struct sge_wrq *wrq, int len16, struct wrq_cookie *cookie)
|
|
{
|
|
struct sge_eq *eq = &wrq->eq;
|
|
struct adapter *sc = wrq->adapter;
|
|
int ndesc, available;
|
|
struct wrqe *wr;
|
|
void *w;
|
|
|
|
MPASS(len16 > 0);
|
|
ndesc = howmany(len16, EQ_ESIZE / 16);
|
|
MPASS(ndesc > 0 && ndesc <= SGE_MAX_WR_NDESC);
|
|
|
|
EQ_LOCK(eq);
|
|
|
|
if (!STAILQ_EMPTY(&wrq->wr_list))
|
|
drain_wrq_wr_list(sc, wrq);
|
|
|
|
if (!STAILQ_EMPTY(&wrq->wr_list)) {
|
|
slowpath:
|
|
EQ_UNLOCK(eq);
|
|
wr = alloc_wrqe(len16 * 16, wrq);
|
|
if (__predict_false(wr == NULL))
|
|
return (NULL);
|
|
cookie->pidx = -1;
|
|
cookie->ndesc = ndesc;
|
|
return (&wr->wr);
|
|
}
|
|
|
|
eq->cidx = read_hw_cidx(eq);
|
|
if (eq->pidx == eq->cidx)
|
|
available = eq->sidx - 1;
|
|
else
|
|
available = IDXDIFF(eq->cidx, eq->pidx, eq->sidx) - 1;
|
|
if (available < ndesc)
|
|
goto slowpath;
|
|
|
|
cookie->pidx = eq->pidx;
|
|
cookie->ndesc = ndesc;
|
|
TAILQ_INSERT_TAIL(&wrq->incomplete_wrs, cookie, link);
|
|
|
|
w = &eq->desc[eq->pidx];
|
|
IDXINCR(eq->pidx, ndesc, eq->sidx);
|
|
if (__predict_false(eq->pidx < ndesc - 1)) {
|
|
w = &wrq->ss[0];
|
|
wrq->ss_pidx = cookie->pidx;
|
|
wrq->ss_len = len16 * 16;
|
|
}
|
|
|
|
EQ_UNLOCK(eq);
|
|
|
|
return (w);
|
|
}
|
|
|
|
void
|
|
commit_wrq_wr(struct sge_wrq *wrq, void *w, struct wrq_cookie *cookie)
|
|
{
|
|
struct sge_eq *eq = &wrq->eq;
|
|
struct adapter *sc = wrq->adapter;
|
|
int ndesc, pidx;
|
|
struct wrq_cookie *prev, *next;
|
|
|
|
if (cookie->pidx == -1) {
|
|
struct wrqe *wr = __containerof(w, struct wrqe, wr);
|
|
|
|
t4_wrq_tx(sc, wr);
|
|
return;
|
|
}
|
|
|
|
ndesc = cookie->ndesc; /* Can be more than SGE_MAX_WR_NDESC here. */
|
|
pidx = cookie->pidx;
|
|
MPASS(pidx >= 0 && pidx < eq->sidx);
|
|
if (__predict_false(w == &wrq->ss[0])) {
|
|
int n = (eq->sidx - wrq->ss_pidx) * EQ_ESIZE;
|
|
|
|
MPASS(wrq->ss_len > n); /* WR had better wrap around. */
|
|
bcopy(&wrq->ss[0], &eq->desc[wrq->ss_pidx], n);
|
|
bcopy(&wrq->ss[n], &eq->desc[0], wrq->ss_len - n);
|
|
wrq->tx_wrs_ss++;
|
|
} else
|
|
wrq->tx_wrs_direct++;
|
|
|
|
EQ_LOCK(eq);
|
|
prev = TAILQ_PREV(cookie, wrq_incomplete_wrs, link);
|
|
next = TAILQ_NEXT(cookie, link);
|
|
if (prev == NULL) {
|
|
MPASS(pidx == eq->dbidx);
|
|
if (next == NULL || ndesc >= 16)
|
|
ring_eq_db(wrq->adapter, eq, ndesc);
|
|
else {
|
|
MPASS(IDXDIFF(next->pidx, pidx, eq->sidx) == ndesc);
|
|
next->pidx = pidx;
|
|
next->ndesc += ndesc;
|
|
}
|
|
} else {
|
|
MPASS(IDXDIFF(pidx, prev->pidx, eq->sidx) == prev->ndesc);
|
|
prev->ndesc += ndesc;
|
|
}
|
|
TAILQ_REMOVE(&wrq->incomplete_wrs, cookie, link);
|
|
|
|
if (TAILQ_EMPTY(&wrq->incomplete_wrs) && !STAILQ_EMPTY(&wrq->wr_list))
|
|
drain_wrq_wr_list(sc, wrq);
|
|
|
|
#ifdef INVARIANTS
|
|
if (TAILQ_EMPTY(&wrq->incomplete_wrs)) {
|
|
/* Doorbell must have caught up to the pidx. */
|
|
MPASS(wrq->eq.pidx == wrq->eq.dbidx);
|
|
}
|
|
#endif
|
|
EQ_UNLOCK(eq);
|
|
}
|
|
|
|
static u_int
|
|
can_resume_eth_tx(struct mp_ring *r)
|
|
{
|
|
struct sge_eq *eq = r->cookie;
|
|
|
|
return (total_available_tx_desc(eq) > eq->sidx / 8);
|
|
}
|
|
|
|
static inline int
|
|
cannot_use_txpkts(struct mbuf *m)
|
|
{
|
|
/* maybe put a GL limit too, to avoid silliness? */
|
|
|
|
return (needs_tso(m));
|
|
}
|
|
|
|
/*
|
|
* r->items[cidx] to r->items[pidx], with a wraparound at r->size, are ready to
|
|
* be consumed. Return the actual number consumed. 0 indicates a stall.
|
|
*/
|
|
static u_int
|
|
eth_tx(struct mp_ring *r, u_int cidx, u_int pidx)
|
|
{
|
|
struct sge_txq *txq = r->cookie;
|
|
struct sge_eq *eq = &txq->eq;
|
|
struct ifnet *ifp = txq->ifp;
|
|
struct vi_info *vi = ifp->if_softc;
|
|
struct port_info *pi = vi->pi;
|
|
struct adapter *sc = pi->adapter;
|
|
u_int total, remaining; /* # of packets */
|
|
u_int available, dbdiff; /* # of hardware descriptors */
|
|
u_int n, next_cidx;
|
|
struct mbuf *m0, *tail;
|
|
struct txpkts txp;
|
|
struct fw_eth_tx_pkts_wr *wr; /* any fw WR struct will do */
|
|
|
|
remaining = IDXDIFF(pidx, cidx, r->size);
|
|
MPASS(remaining > 0); /* Must not be called without work to do. */
|
|
total = 0;
|
|
|
|
TXQ_LOCK(txq);
|
|
if (__predict_false((eq->flags & EQ_ENABLED) == 0)) {
|
|
while (cidx != pidx) {
|
|
m0 = r->items[cidx];
|
|
m_freem(m0);
|
|
if (++cidx == r->size)
|
|
cidx = 0;
|
|
}
|
|
reclaim_tx_descs(txq, 2048);
|
|
total = remaining;
|
|
goto done;
|
|
}
|
|
|
|
/* How many hardware descriptors do we have readily available. */
|
|
if (eq->pidx == eq->cidx)
|
|
available = eq->sidx - 1;
|
|
else
|
|
available = IDXDIFF(eq->cidx, eq->pidx, eq->sidx) - 1;
|
|
dbdiff = IDXDIFF(eq->pidx, eq->dbidx, eq->sidx);
|
|
|
|
while (remaining > 0) {
|
|
|
|
m0 = r->items[cidx];
|
|
M_ASSERTPKTHDR(m0);
|
|
MPASS(m0->m_nextpkt == NULL);
|
|
|
|
if (available < SGE_MAX_WR_NDESC) {
|
|
available += reclaim_tx_descs(txq, 64);
|
|
if (available < howmany(mbuf_len16(m0), EQ_ESIZE / 16))
|
|
break; /* out of descriptors */
|
|
}
|
|
|
|
next_cidx = cidx + 1;
|
|
if (__predict_false(next_cidx == r->size))
|
|
next_cidx = 0;
|
|
|
|
wr = (void *)&eq->desc[eq->pidx];
|
|
if (remaining > 1 &&
|
|
try_txpkts(m0, r->items[next_cidx], &txp, available) == 0) {
|
|
|
|
/* pkts at cidx, next_cidx should both be in txp. */
|
|
MPASS(txp.npkt == 2);
|
|
tail = r->items[next_cidx];
|
|
MPASS(tail->m_nextpkt == NULL);
|
|
ETHER_BPF_MTAP(ifp, m0);
|
|
ETHER_BPF_MTAP(ifp, tail);
|
|
m0->m_nextpkt = tail;
|
|
|
|
if (__predict_false(++next_cidx == r->size))
|
|
next_cidx = 0;
|
|
|
|
while (next_cidx != pidx) {
|
|
if (add_to_txpkts(r->items[next_cidx], &txp,
|
|
available) != 0)
|
|
break;
|
|
tail->m_nextpkt = r->items[next_cidx];
|
|
tail = tail->m_nextpkt;
|
|
ETHER_BPF_MTAP(ifp, tail);
|
|
if (__predict_false(++next_cidx == r->size))
|
|
next_cidx = 0;
|
|
}
|
|
|
|
n = write_txpkts_wr(txq, wr, m0, &txp, available);
|
|
total += txp.npkt;
|
|
remaining -= txp.npkt;
|
|
} else {
|
|
total++;
|
|
remaining--;
|
|
ETHER_BPF_MTAP(ifp, m0);
|
|
n = write_txpkt_wr(txq, (void *)wr, m0, available);
|
|
}
|
|
MPASS(n >= 1 && n <= available && n <= SGE_MAX_WR_NDESC);
|
|
|
|
available -= n;
|
|
dbdiff += n;
|
|
IDXINCR(eq->pidx, n, eq->sidx);
|
|
|
|
if (total_available_tx_desc(eq) < eq->sidx / 4 &&
|
|
atomic_cmpset_int(&eq->equiq, 0, 1)) {
|
|
wr->equiq_to_len16 |= htobe32(F_FW_WR_EQUIQ |
|
|
F_FW_WR_EQUEQ);
|
|
eq->equeqidx = eq->pidx;
|
|
} else if (IDXDIFF(eq->pidx, eq->equeqidx, eq->sidx) >= 32) {
|
|
wr->equiq_to_len16 |= htobe32(F_FW_WR_EQUEQ);
|
|
eq->equeqidx = eq->pidx;
|
|
}
|
|
|
|
if (dbdiff >= 16 && remaining >= 4) {
|
|
ring_eq_db(sc, eq, dbdiff);
|
|
available += reclaim_tx_descs(txq, 4 * dbdiff);
|
|
dbdiff = 0;
|
|
}
|
|
|
|
cidx = next_cidx;
|
|
}
|
|
if (dbdiff != 0) {
|
|
ring_eq_db(sc, eq, dbdiff);
|
|
reclaim_tx_descs(txq, 32);
|
|
}
|
|
done:
|
|
TXQ_UNLOCK(txq);
|
|
|
|
return (total);
|
|
}
|
|
|
|
static inline void
|
|
init_iq(struct sge_iq *iq, struct adapter *sc, int tmr_idx, int pktc_idx,
|
|
int qsize)
|
|
{
|
|
|
|
KASSERT(tmr_idx >= 0 && tmr_idx < SGE_NTIMERS,
|
|
("%s: bad tmr_idx %d", __func__, tmr_idx));
|
|
KASSERT(pktc_idx < SGE_NCOUNTERS, /* -ve is ok, means don't use */
|
|
("%s: bad pktc_idx %d", __func__, pktc_idx));
|
|
|
|
iq->flags = 0;
|
|
iq->adapter = sc;
|
|
iq->intr_params = V_QINTR_TIMER_IDX(tmr_idx);
|
|
iq->intr_pktc_idx = SGE_NCOUNTERS - 1;
|
|
if (pktc_idx >= 0) {
|
|
iq->intr_params |= F_QINTR_CNT_EN;
|
|
iq->intr_pktc_idx = pktc_idx;
|
|
}
|
|
iq->qsize = roundup2(qsize, 16); /* See FW_IQ_CMD/iqsize */
|
|
iq->sidx = iq->qsize - sc->params.sge.spg_len / IQ_ESIZE;
|
|
}
|
|
|
|
static inline void
|
|
init_fl(struct adapter *sc, struct sge_fl *fl, int qsize, int maxp, char *name)
|
|
{
|
|
|
|
fl->qsize = qsize;
|
|
fl->sidx = qsize - sc->params.sge.spg_len / EQ_ESIZE;
|
|
strlcpy(fl->lockname, name, sizeof(fl->lockname));
|
|
if (sc->flags & BUF_PACKING_OK &&
|
|
((!is_t4(sc) && buffer_packing) || /* T5+: enabled unless 0 */
|
|
(is_t4(sc) && buffer_packing == 1)))/* T4: disabled unless 1 */
|
|
fl->flags |= FL_BUF_PACKING;
|
|
find_best_refill_source(sc, fl, maxp);
|
|
find_safe_refill_source(sc, fl);
|
|
}
|
|
|
|
static inline void
|
|
init_eq(struct adapter *sc, struct sge_eq *eq, int eqtype, int qsize,
|
|
uint8_t tx_chan, uint16_t iqid, char *name)
|
|
{
|
|
KASSERT(eqtype <= EQ_TYPEMASK, ("%s: bad qtype %d", __func__, eqtype));
|
|
|
|
eq->flags = eqtype & EQ_TYPEMASK;
|
|
eq->tx_chan = tx_chan;
|
|
eq->iqid = iqid;
|
|
eq->sidx = qsize - sc->params.sge.spg_len / EQ_ESIZE;
|
|
strlcpy(eq->lockname, name, sizeof(eq->lockname));
|
|
}
|
|
|
|
static int
|
|
alloc_ring(struct adapter *sc, size_t len, bus_dma_tag_t *tag,
|
|
bus_dmamap_t *map, bus_addr_t *pa, void **va)
|
|
{
|
|
int rc;
|
|
|
|
rc = bus_dma_tag_create(sc->dmat, 512, 0, BUS_SPACE_MAXADDR,
|
|
BUS_SPACE_MAXADDR, NULL, NULL, len, 1, len, 0, NULL, NULL, tag);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev, "cannot allocate DMA tag: %d\n", rc);
|
|
goto done;
|
|
}
|
|
|
|
rc = bus_dmamem_alloc(*tag, va,
|
|
BUS_DMA_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO, map);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev, "cannot allocate DMA memory: %d\n", rc);
|
|
goto done;
|
|
}
|
|
|
|
rc = bus_dmamap_load(*tag, *map, *va, len, oneseg_dma_callback, pa, 0);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev, "cannot load DMA map: %d\n", rc);
|
|
goto done;
|
|
}
|
|
done:
|
|
if (rc)
|
|
free_ring(sc, *tag, *map, *pa, *va);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static int
|
|
free_ring(struct adapter *sc, bus_dma_tag_t tag, bus_dmamap_t map,
|
|
bus_addr_t pa, void *va)
|
|
{
|
|
if (pa)
|
|
bus_dmamap_unload(tag, map);
|
|
if (va)
|
|
bus_dmamem_free(tag, va, map);
|
|
if (tag)
|
|
bus_dma_tag_destroy(tag);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Allocates the ring for an ingress queue and an optional freelist. If the
|
|
* freelist is specified it will be allocated and then associated with the
|
|
* ingress queue.
|
|
*
|
|
* Returns errno on failure. Resources allocated up to that point may still be
|
|
* allocated. Caller is responsible for cleanup in case this function fails.
|
|
*
|
|
* If the ingress queue will take interrupts directly (iq->flags & IQ_INTR) then
|
|
* the intr_idx specifies the vector, starting from 0. Otherwise it specifies
|
|
* the abs_id of the ingress queue to which its interrupts should be forwarded.
|
|
*/
|
|
static int
|
|
alloc_iq_fl(struct vi_info *vi, struct sge_iq *iq, struct sge_fl *fl,
|
|
int intr_idx, int cong)
|
|
{
|
|
int rc, i, cntxt_id;
|
|
size_t len;
|
|
struct fw_iq_cmd c;
|
|
struct port_info *pi = vi->pi;
|
|
struct adapter *sc = iq->adapter;
|
|
struct sge_params *sp = &sc->params.sge;
|
|
__be32 v = 0;
|
|
|
|
len = iq->qsize * IQ_ESIZE;
|
|
rc = alloc_ring(sc, len, &iq->desc_tag, &iq->desc_map, &iq->ba,
|
|
(void **)&iq->desc);
|
|
if (rc != 0)
|
|
return (rc);
|
|
|
|
bzero(&c, sizeof(c));
|
|
c.op_to_vfn = htobe32(V_FW_CMD_OP(FW_IQ_CMD) | F_FW_CMD_REQUEST |
|
|
F_FW_CMD_WRITE | F_FW_CMD_EXEC | V_FW_IQ_CMD_PFN(sc->pf) |
|
|
V_FW_IQ_CMD_VFN(0));
|
|
|
|
c.alloc_to_len16 = htobe32(F_FW_IQ_CMD_ALLOC | F_FW_IQ_CMD_IQSTART |
|
|
FW_LEN16(c));
|
|
|
|
/* Special handling for firmware event queue */
|
|
if (iq == &sc->sge.fwq)
|
|
v |= F_FW_IQ_CMD_IQASYNCH;
|
|
|
|
if (iq->flags & IQ_INTR) {
|
|
KASSERT(intr_idx < sc->intr_count,
|
|
("%s: invalid direct intr_idx %d", __func__, intr_idx));
|
|
} else
|
|
v |= F_FW_IQ_CMD_IQANDST;
|
|
v |= V_FW_IQ_CMD_IQANDSTINDEX(intr_idx);
|
|
|
|
c.type_to_iqandstindex = htobe32(v |
|
|
V_FW_IQ_CMD_TYPE(FW_IQ_TYPE_FL_INT_CAP) |
|
|
V_FW_IQ_CMD_VIID(vi->viid) |
|
|
V_FW_IQ_CMD_IQANUD(X_UPDATEDELIVERY_INTERRUPT));
|
|
c.iqdroprss_to_iqesize = htobe16(V_FW_IQ_CMD_IQPCIECH(pi->tx_chan) |
|
|
F_FW_IQ_CMD_IQGTSMODE |
|
|
V_FW_IQ_CMD_IQINTCNTTHRESH(iq->intr_pktc_idx) |
|
|
V_FW_IQ_CMD_IQESIZE(ilog2(IQ_ESIZE) - 4));
|
|
c.iqsize = htobe16(iq->qsize);
|
|
c.iqaddr = htobe64(iq->ba);
|
|
if (cong >= 0)
|
|
c.iqns_to_fl0congen = htobe32(F_FW_IQ_CMD_IQFLINTCONGEN);
|
|
|
|
if (fl) {
|
|
mtx_init(&fl->fl_lock, fl->lockname, NULL, MTX_DEF);
|
|
|
|
len = fl->qsize * EQ_ESIZE;
|
|
rc = alloc_ring(sc, len, &fl->desc_tag, &fl->desc_map,
|
|
&fl->ba, (void **)&fl->desc);
|
|
if (rc)
|
|
return (rc);
|
|
|
|
/* Allocate space for one software descriptor per buffer. */
|
|
rc = alloc_fl_sdesc(fl);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev,
|
|
"failed to setup fl software descriptors: %d\n",
|
|
rc);
|
|
return (rc);
|
|
}
|
|
|
|
if (fl->flags & FL_BUF_PACKING) {
|
|
fl->lowat = roundup2(sp->fl_starve_threshold2, 8);
|
|
fl->buf_boundary = sp->pack_boundary;
|
|
} else {
|
|
fl->lowat = roundup2(sp->fl_starve_threshold, 8);
|
|
fl->buf_boundary = 16;
|
|
}
|
|
if (fl_pad && fl->buf_boundary < sp->pad_boundary)
|
|
fl->buf_boundary = sp->pad_boundary;
|
|
|
|
c.iqns_to_fl0congen |=
|
|
htobe32(V_FW_IQ_CMD_FL0HOSTFCMODE(X_HOSTFCMODE_NONE) |
|
|
F_FW_IQ_CMD_FL0FETCHRO | F_FW_IQ_CMD_FL0DATARO |
|
|
(fl_pad ? F_FW_IQ_CMD_FL0PADEN : 0) |
|
|
(fl->flags & FL_BUF_PACKING ? F_FW_IQ_CMD_FL0PACKEN :
|
|
0));
|
|
if (cong >= 0) {
|
|
c.iqns_to_fl0congen |=
|
|
htobe32(V_FW_IQ_CMD_FL0CNGCHMAP(cong) |
|
|
F_FW_IQ_CMD_FL0CONGCIF |
|
|
F_FW_IQ_CMD_FL0CONGEN);
|
|
}
|
|
c.fl0dcaen_to_fl0cidxfthresh =
|
|
htobe16(V_FW_IQ_CMD_FL0FBMIN(X_FETCHBURSTMIN_128B) |
|
|
V_FW_IQ_CMD_FL0FBMAX(X_FETCHBURSTMAX_512B));
|
|
c.fl0size = htobe16(fl->qsize);
|
|
c.fl0addr = htobe64(fl->ba);
|
|
}
|
|
|
|
rc = -t4_wr_mbox(sc, sc->mbox, &c, sizeof(c), &c);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev,
|
|
"failed to create ingress queue: %d\n", rc);
|
|
return (rc);
|
|
}
|
|
|
|
iq->cidx = 0;
|
|
iq->gen = F_RSPD_GEN;
|
|
iq->intr_next = iq->intr_params;
|
|
iq->cntxt_id = be16toh(c.iqid);
|
|
iq->abs_id = be16toh(c.physiqid);
|
|
iq->flags |= IQ_ALLOCATED;
|
|
|
|
cntxt_id = iq->cntxt_id - sc->sge.iq_start;
|
|
if (cntxt_id >= sc->sge.niq) {
|
|
panic ("%s: iq->cntxt_id (%d) more than the max (%d)", __func__,
|
|
cntxt_id, sc->sge.niq - 1);
|
|
}
|
|
sc->sge.iqmap[cntxt_id] = iq;
|
|
|
|
if (fl) {
|
|
u_int qid;
|
|
|
|
iq->flags |= IQ_HAS_FL;
|
|
fl->cntxt_id = be16toh(c.fl0id);
|
|
fl->pidx = fl->cidx = 0;
|
|
|
|
cntxt_id = fl->cntxt_id - sc->sge.eq_start;
|
|
if (cntxt_id >= sc->sge.neq) {
|
|
panic("%s: fl->cntxt_id (%d) more than the max (%d)",
|
|
__func__, cntxt_id, sc->sge.neq - 1);
|
|
}
|
|
sc->sge.eqmap[cntxt_id] = (void *)fl;
|
|
|
|
qid = fl->cntxt_id;
|
|
if (isset(&sc->doorbells, DOORBELL_UDB)) {
|
|
uint32_t s_qpp = sc->params.sge.eq_s_qpp;
|
|
uint32_t mask = (1 << s_qpp) - 1;
|
|
volatile uint8_t *udb;
|
|
|
|
udb = sc->udbs_base + UDBS_DB_OFFSET;
|
|
udb += (qid >> s_qpp) << PAGE_SHIFT;
|
|
qid &= mask;
|
|
if (qid < PAGE_SIZE / UDBS_SEG_SIZE) {
|
|
udb += qid << UDBS_SEG_SHIFT;
|
|
qid = 0;
|
|
}
|
|
fl->udb = (volatile void *)udb;
|
|
}
|
|
fl->dbval = V_QID(qid) | sc->chip_params->sge_fl_db;
|
|
|
|
FL_LOCK(fl);
|
|
/* Enough to make sure the SGE doesn't think it's starved */
|
|
refill_fl(sc, fl, fl->lowat);
|
|
FL_UNLOCK(fl);
|
|
}
|
|
|
|
if (is_t5(sc) && cong >= 0) {
|
|
uint32_t param, val;
|
|
|
|
param = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) |
|
|
V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DMAQ_CONM_CTXT) |
|
|
V_FW_PARAMS_PARAM_YZ(iq->cntxt_id);
|
|
if (cong == 0)
|
|
val = 1 << 19;
|
|
else {
|
|
val = 2 << 19;
|
|
for (i = 0; i < 4; i++) {
|
|
if (cong & (1 << i))
|
|
val |= 1 << (i << 2);
|
|
}
|
|
}
|
|
|
|
rc = -t4_set_params(sc, sc->mbox, sc->pf, 0, 1, ¶m, &val);
|
|
if (rc != 0) {
|
|
/* report error but carry on */
|
|
device_printf(sc->dev,
|
|
"failed to set congestion manager context for "
|
|
"ingress queue %d: %d\n", iq->cntxt_id, rc);
|
|
}
|
|
}
|
|
|
|
/* Enable IQ interrupts */
|
|
atomic_store_rel_int(&iq->state, IQS_IDLE);
|
|
t4_write_reg(sc, MYPF_REG(A_SGE_PF_GTS), V_SEINTARM(iq->intr_params) |
|
|
V_INGRESSQID(iq->cntxt_id));
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
free_iq_fl(struct vi_info *vi, struct sge_iq *iq, struct sge_fl *fl)
|
|
{
|
|
int rc;
|
|
struct adapter *sc = iq->adapter;
|
|
device_t dev;
|
|
|
|
if (sc == NULL)
|
|
return (0); /* nothing to do */
|
|
|
|
dev = vi ? vi->dev : sc->dev;
|
|
|
|
if (iq->flags & IQ_ALLOCATED) {
|
|
rc = -t4_iq_free(sc, sc->mbox, sc->pf, 0,
|
|
FW_IQ_TYPE_FL_INT_CAP, iq->cntxt_id,
|
|
fl ? fl->cntxt_id : 0xffff, 0xffff);
|
|
if (rc != 0) {
|
|
device_printf(dev,
|
|
"failed to free queue %p: %d\n", iq, rc);
|
|
return (rc);
|
|
}
|
|
iq->flags &= ~IQ_ALLOCATED;
|
|
}
|
|
|
|
free_ring(sc, iq->desc_tag, iq->desc_map, iq->ba, iq->desc);
|
|
|
|
bzero(iq, sizeof(*iq));
|
|
|
|
if (fl) {
|
|
free_ring(sc, fl->desc_tag, fl->desc_map, fl->ba,
|
|
fl->desc);
|
|
|
|
if (fl->sdesc)
|
|
free_fl_sdesc(sc, fl);
|
|
|
|
if (mtx_initialized(&fl->fl_lock))
|
|
mtx_destroy(&fl->fl_lock);
|
|
|
|
bzero(fl, sizeof(*fl));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
add_fl_sysctls(struct sysctl_ctx_list *ctx, struct sysctl_oid *oid,
|
|
struct sge_fl *fl)
|
|
{
|
|
struct sysctl_oid_list *children = SYSCTL_CHILDREN(oid);
|
|
|
|
oid = SYSCTL_ADD_NODE(ctx, children, OID_AUTO, "fl", CTLFLAG_RD, NULL,
|
|
"freelist");
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "cntxt_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &fl->cntxt_id, 0, sysctl_uint16, "I",
|
|
"SGE context id of the freelist");
|
|
SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "padding", CTLFLAG_RD, NULL,
|
|
fl_pad ? 1 : 0, "padding enabled");
|
|
SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "packing", CTLFLAG_RD, NULL,
|
|
fl->flags & FL_BUF_PACKING ? 1 : 0, "packing enabled");
|
|
SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "cidx", CTLFLAG_RD, &fl->cidx,
|
|
0, "consumer index");
|
|
if (fl->flags & FL_BUF_PACKING) {
|
|
SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "rx_offset",
|
|
CTLFLAG_RD, &fl->rx_offset, 0, "packing rx offset");
|
|
}
|
|
SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "pidx", CTLFLAG_RD, &fl->pidx,
|
|
0, "producer index");
|
|
SYSCTL_ADD_UQUAD(ctx, children, OID_AUTO, "mbuf_allocated",
|
|
CTLFLAG_RD, &fl->mbuf_allocated, "# of mbuf allocated");
|
|
SYSCTL_ADD_UQUAD(ctx, children, OID_AUTO, "mbuf_inlined",
|
|
CTLFLAG_RD, &fl->mbuf_inlined, "# of mbuf inlined in clusters");
|
|
SYSCTL_ADD_UQUAD(ctx, children, OID_AUTO, "cluster_allocated",
|
|
CTLFLAG_RD, &fl->cl_allocated, "# of clusters allocated");
|
|
SYSCTL_ADD_UQUAD(ctx, children, OID_AUTO, "cluster_recycled",
|
|
CTLFLAG_RD, &fl->cl_recycled, "# of clusters recycled");
|
|
SYSCTL_ADD_UQUAD(ctx, children, OID_AUTO, "cluster_fast_recycled",
|
|
CTLFLAG_RD, &fl->cl_fast_recycled, "# of clusters recycled (fast)");
|
|
}
|
|
|
|
static int
|
|
alloc_fwq(struct adapter *sc)
|
|
{
|
|
int rc, intr_idx;
|
|
struct sge_iq *fwq = &sc->sge.fwq;
|
|
struct sysctl_oid *oid = device_get_sysctl_tree(sc->dev);
|
|
struct sysctl_oid_list *children = SYSCTL_CHILDREN(oid);
|
|
|
|
init_iq(fwq, sc, 0, 0, FW_IQ_QSIZE);
|
|
fwq->flags |= IQ_INTR; /* always */
|
|
intr_idx = sc->intr_count > 1 ? 1 : 0;
|
|
rc = alloc_iq_fl(&sc->port[0]->vi[0], fwq, NULL, intr_idx, -1);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev,
|
|
"failed to create firmware event queue: %d\n", rc);
|
|
return (rc);
|
|
}
|
|
|
|
oid = SYSCTL_ADD_NODE(&sc->ctx, children, OID_AUTO, "fwq", CTLFLAG_RD,
|
|
NULL, "firmware event queue");
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
SYSCTL_ADD_PROC(&sc->ctx, children, OID_AUTO, "abs_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &fwq->abs_id, 0, sysctl_uint16, "I",
|
|
"absolute id of the queue");
|
|
SYSCTL_ADD_PROC(&sc->ctx, children, OID_AUTO, "cntxt_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &fwq->cntxt_id, 0, sysctl_uint16, "I",
|
|
"SGE context id of the queue");
|
|
SYSCTL_ADD_PROC(&sc->ctx, children, OID_AUTO, "cidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &fwq->cidx, 0, sysctl_uint16, "I",
|
|
"consumer index");
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
free_fwq(struct adapter *sc)
|
|
{
|
|
return free_iq_fl(NULL, &sc->sge.fwq, NULL);
|
|
}
|
|
|
|
static int
|
|
alloc_mgmtq(struct adapter *sc)
|
|
{
|
|
int rc;
|
|
struct sge_wrq *mgmtq = &sc->sge.mgmtq;
|
|
char name[16];
|
|
struct sysctl_oid *oid = device_get_sysctl_tree(sc->dev);
|
|
struct sysctl_oid_list *children = SYSCTL_CHILDREN(oid);
|
|
|
|
oid = SYSCTL_ADD_NODE(&sc->ctx, children, OID_AUTO, "mgmtq", CTLFLAG_RD,
|
|
NULL, "management queue");
|
|
|
|
snprintf(name, sizeof(name), "%s mgmtq", device_get_nameunit(sc->dev));
|
|
init_eq(sc, &mgmtq->eq, EQ_CTRL, CTRL_EQ_QSIZE, sc->port[0]->tx_chan,
|
|
sc->sge.fwq.cntxt_id, name);
|
|
rc = alloc_wrq(sc, NULL, mgmtq, oid);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev,
|
|
"failed to create management queue: %d\n", rc);
|
|
return (rc);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
free_mgmtq(struct adapter *sc)
|
|
{
|
|
|
|
return free_wrq(sc, &sc->sge.mgmtq);
|
|
}
|
|
|
|
int
|
|
tnl_cong(struct port_info *pi, int drop)
|
|
{
|
|
|
|
if (drop == -1)
|
|
return (-1);
|
|
else if (drop == 1)
|
|
return (0);
|
|
else
|
|
return (pi->rx_chan_map);
|
|
}
|
|
|
|
static int
|
|
alloc_rxq(struct vi_info *vi, struct sge_rxq *rxq, int intr_idx, int idx,
|
|
struct sysctl_oid *oid)
|
|
{
|
|
int rc;
|
|
struct sysctl_oid_list *children;
|
|
char name[16];
|
|
|
|
rc = alloc_iq_fl(vi, &rxq->iq, &rxq->fl, intr_idx,
|
|
tnl_cong(vi->pi, cong_drop));
|
|
if (rc != 0)
|
|
return (rc);
|
|
|
|
/*
|
|
* The freelist is just barely above the starvation threshold right now,
|
|
* fill it up a bit more.
|
|
*/
|
|
FL_LOCK(&rxq->fl);
|
|
refill_fl(vi->pi->adapter, &rxq->fl, 128);
|
|
FL_UNLOCK(&rxq->fl);
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
rc = tcp_lro_init(&rxq->lro);
|
|
if (rc != 0)
|
|
return (rc);
|
|
rxq->lro.ifp = vi->ifp; /* also indicates LRO init'ed */
|
|
|
|
if (vi->ifp->if_capenable & IFCAP_LRO)
|
|
rxq->iq.flags |= IQ_LRO_ENABLED;
|
|
#endif
|
|
rxq->ifp = vi->ifp;
|
|
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
snprintf(name, sizeof(name), "%d", idx);
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, name, CTLFLAG_RD,
|
|
NULL, "rx queue");
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "abs_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &rxq->iq.abs_id, 0, sysctl_uint16, "I",
|
|
"absolute id of the queue");
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "cntxt_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &rxq->iq.cntxt_id, 0, sysctl_uint16, "I",
|
|
"SGE context id of the queue");
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "cidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &rxq->iq.cidx, 0, sysctl_uint16, "I",
|
|
"consumer index");
|
|
#if defined(INET) || defined(INET6)
|
|
SYSCTL_ADD_U64(&vi->ctx, children, OID_AUTO, "lro_queued", CTLFLAG_RD,
|
|
&rxq->lro.lro_queued, 0, NULL);
|
|
SYSCTL_ADD_U64(&vi->ctx, children, OID_AUTO, "lro_flushed", CTLFLAG_RD,
|
|
&rxq->lro.lro_flushed, 0, NULL);
|
|
#endif
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "rxcsum", CTLFLAG_RD,
|
|
&rxq->rxcsum, "# of times hardware assisted with checksum");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "vlan_extraction",
|
|
CTLFLAG_RD, &rxq->vlan_extraction,
|
|
"# of times hardware extracted 802.1Q tag");
|
|
|
|
add_fl_sysctls(&vi->ctx, oid, &rxq->fl);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static int
|
|
free_rxq(struct vi_info *vi, struct sge_rxq *rxq)
|
|
{
|
|
int rc;
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
if (rxq->lro.ifp) {
|
|
tcp_lro_free(&rxq->lro);
|
|
rxq->lro.ifp = NULL;
|
|
}
|
|
#endif
|
|
|
|
rc = free_iq_fl(vi, &rxq->iq, &rxq->fl);
|
|
if (rc == 0)
|
|
bzero(rxq, sizeof(*rxq));
|
|
|
|
return (rc);
|
|
}
|
|
|
|
#ifdef TCP_OFFLOAD
|
|
static int
|
|
alloc_ofld_rxq(struct vi_info *vi, struct sge_ofld_rxq *ofld_rxq,
|
|
int intr_idx, int idx, struct sysctl_oid *oid)
|
|
{
|
|
int rc;
|
|
struct sysctl_oid_list *children;
|
|
char name[16];
|
|
|
|
rc = alloc_iq_fl(vi, &ofld_rxq->iq, &ofld_rxq->fl, intr_idx,
|
|
vi->pi->rx_chan_map);
|
|
if (rc != 0)
|
|
return (rc);
|
|
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
snprintf(name, sizeof(name), "%d", idx);
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, name, CTLFLAG_RD,
|
|
NULL, "rx queue");
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "abs_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &ofld_rxq->iq.abs_id, 0, sysctl_uint16,
|
|
"I", "absolute id of the queue");
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "cntxt_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &ofld_rxq->iq.cntxt_id, 0, sysctl_uint16,
|
|
"I", "SGE context id of the queue");
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "cidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &ofld_rxq->iq.cidx, 0, sysctl_uint16, "I",
|
|
"consumer index");
|
|
|
|
add_fl_sysctls(&vi->ctx, oid, &ofld_rxq->fl);
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static int
|
|
free_ofld_rxq(struct vi_info *vi, struct sge_ofld_rxq *ofld_rxq)
|
|
{
|
|
int rc;
|
|
|
|
rc = free_iq_fl(vi, &ofld_rxq->iq, &ofld_rxq->fl);
|
|
if (rc == 0)
|
|
bzero(ofld_rxq, sizeof(*ofld_rxq));
|
|
|
|
return (rc);
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEV_NETMAP
|
|
static int
|
|
alloc_nm_rxq(struct vi_info *vi, struct sge_nm_rxq *nm_rxq, int intr_idx,
|
|
int idx, struct sysctl_oid *oid)
|
|
{
|
|
int rc;
|
|
struct sysctl_oid_list *children;
|
|
struct sysctl_ctx_list *ctx;
|
|
char name[16];
|
|
size_t len;
|
|
struct adapter *sc = vi->pi->adapter;
|
|
struct netmap_adapter *na = NA(vi->ifp);
|
|
|
|
MPASS(na != NULL);
|
|
|
|
len = vi->qsize_rxq * IQ_ESIZE;
|
|
rc = alloc_ring(sc, len, &nm_rxq->iq_desc_tag, &nm_rxq->iq_desc_map,
|
|
&nm_rxq->iq_ba, (void **)&nm_rxq->iq_desc);
|
|
if (rc != 0)
|
|
return (rc);
|
|
|
|
len = na->num_rx_desc * EQ_ESIZE + sc->params.sge.spg_len;
|
|
rc = alloc_ring(sc, len, &nm_rxq->fl_desc_tag, &nm_rxq->fl_desc_map,
|
|
&nm_rxq->fl_ba, (void **)&nm_rxq->fl_desc);
|
|
if (rc != 0)
|
|
return (rc);
|
|
|
|
nm_rxq->vi = vi;
|
|
nm_rxq->nid = idx;
|
|
nm_rxq->iq_cidx = 0;
|
|
nm_rxq->iq_sidx = vi->qsize_rxq - sc->params.sge.spg_len / IQ_ESIZE;
|
|
nm_rxq->iq_gen = F_RSPD_GEN;
|
|
nm_rxq->fl_pidx = nm_rxq->fl_cidx = 0;
|
|
nm_rxq->fl_sidx = na->num_rx_desc;
|
|
nm_rxq->intr_idx = intr_idx;
|
|
|
|
ctx = &vi->ctx;
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
snprintf(name, sizeof(name), "%d", idx);
|
|
oid = SYSCTL_ADD_NODE(ctx, children, OID_AUTO, name, CTLFLAG_RD, NULL,
|
|
"rx queue");
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "abs_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &nm_rxq->iq_abs_id, 0, sysctl_uint16,
|
|
"I", "absolute id of the queue");
|
|
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "cntxt_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &nm_rxq->iq_cntxt_id, 0, sysctl_uint16,
|
|
"I", "SGE context id of the queue");
|
|
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "cidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &nm_rxq->iq_cidx, 0, sysctl_uint16, "I",
|
|
"consumer index");
|
|
|
|
children = SYSCTL_CHILDREN(oid);
|
|
oid = SYSCTL_ADD_NODE(ctx, children, OID_AUTO, "fl", CTLFLAG_RD, NULL,
|
|
"freelist");
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "cntxt_id",
|
|
CTLTYPE_INT | CTLFLAG_RD, &nm_rxq->fl_cntxt_id, 0, sysctl_uint16,
|
|
"I", "SGE context id of the freelist");
|
|
SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "cidx", CTLFLAG_RD,
|
|
&nm_rxq->fl_cidx, 0, "consumer index");
|
|
SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "pidx", CTLFLAG_RD,
|
|
&nm_rxq->fl_pidx, 0, "producer index");
|
|
|
|
return (rc);
|
|
}
|
|
|
|
|
|
static int
|
|
free_nm_rxq(struct vi_info *vi, struct sge_nm_rxq *nm_rxq)
|
|
{
|
|
struct adapter *sc = vi->pi->adapter;
|
|
|
|
free_ring(sc, nm_rxq->iq_desc_tag, nm_rxq->iq_desc_map, nm_rxq->iq_ba,
|
|
nm_rxq->iq_desc);
|
|
free_ring(sc, nm_rxq->fl_desc_tag, nm_rxq->fl_desc_map, nm_rxq->fl_ba,
|
|
nm_rxq->fl_desc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
alloc_nm_txq(struct vi_info *vi, struct sge_nm_txq *nm_txq, int iqidx, int idx,
|
|
struct sysctl_oid *oid)
|
|
{
|
|
int rc;
|
|
size_t len;
|
|
struct port_info *pi = vi->pi;
|
|
struct adapter *sc = pi->adapter;
|
|
struct netmap_adapter *na = NA(vi->ifp);
|
|
char name[16];
|
|
struct sysctl_oid_list *children = SYSCTL_CHILDREN(oid);
|
|
|
|
len = na->num_tx_desc * EQ_ESIZE + sc->params.sge.spg_len;
|
|
rc = alloc_ring(sc, len, &nm_txq->desc_tag, &nm_txq->desc_map,
|
|
&nm_txq->ba, (void **)&nm_txq->desc);
|
|
if (rc)
|
|
return (rc);
|
|
|
|
nm_txq->pidx = nm_txq->cidx = 0;
|
|
nm_txq->sidx = na->num_tx_desc;
|
|
nm_txq->nid = idx;
|
|
nm_txq->iqidx = iqidx;
|
|
nm_txq->cpl_ctrl0 = htobe32(V_TXPKT_OPCODE(CPL_TX_PKT) |
|
|
V_TXPKT_INTF(pi->tx_chan) | V_TXPKT_VF_VLD(1) |
|
|
V_TXPKT_VF(vi->viid));
|
|
|
|
snprintf(name, sizeof(name), "%d", idx);
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, name, CTLFLAG_RD,
|
|
NULL, "netmap tx queue");
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
SYSCTL_ADD_UINT(&vi->ctx, children, OID_AUTO, "cntxt_id", CTLFLAG_RD,
|
|
&nm_txq->cntxt_id, 0, "SGE context id of the queue");
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "cidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &nm_txq->cidx, 0, sysctl_uint16, "I",
|
|
"consumer index");
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "pidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &nm_txq->pidx, 0, sysctl_uint16, "I",
|
|
"producer index");
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static int
|
|
free_nm_txq(struct vi_info *vi, struct sge_nm_txq *nm_txq)
|
|
{
|
|
struct adapter *sc = vi->pi->adapter;
|
|
|
|
free_ring(sc, nm_txq->desc_tag, nm_txq->desc_map, nm_txq->ba,
|
|
nm_txq->desc);
|
|
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
ctrl_eq_alloc(struct adapter *sc, struct sge_eq *eq)
|
|
{
|
|
int rc, cntxt_id;
|
|
struct fw_eq_ctrl_cmd c;
|
|
int qsize = eq->sidx + sc->params.sge.spg_len / EQ_ESIZE;
|
|
|
|
bzero(&c, sizeof(c));
|
|
|
|
c.op_to_vfn = htobe32(V_FW_CMD_OP(FW_EQ_CTRL_CMD) | F_FW_CMD_REQUEST |
|
|
F_FW_CMD_WRITE | F_FW_CMD_EXEC | V_FW_EQ_CTRL_CMD_PFN(sc->pf) |
|
|
V_FW_EQ_CTRL_CMD_VFN(0));
|
|
c.alloc_to_len16 = htobe32(F_FW_EQ_CTRL_CMD_ALLOC |
|
|
F_FW_EQ_CTRL_CMD_EQSTART | FW_LEN16(c));
|
|
c.cmpliqid_eqid = htonl(V_FW_EQ_CTRL_CMD_CMPLIQID(eq->iqid));
|
|
c.physeqid_pkd = htobe32(0);
|
|
c.fetchszm_to_iqid =
|
|
htobe32(V_FW_EQ_CTRL_CMD_HOSTFCMODE(X_HOSTFCMODE_NONE) |
|
|
V_FW_EQ_CTRL_CMD_PCIECHN(eq->tx_chan) |
|
|
F_FW_EQ_CTRL_CMD_FETCHRO | V_FW_EQ_CTRL_CMD_IQID(eq->iqid));
|
|
c.dcaen_to_eqsize =
|
|
htobe32(V_FW_EQ_CTRL_CMD_FBMIN(X_FETCHBURSTMIN_64B) |
|
|
V_FW_EQ_CTRL_CMD_FBMAX(X_FETCHBURSTMAX_512B) |
|
|
V_FW_EQ_CTRL_CMD_EQSIZE(qsize));
|
|
c.eqaddr = htobe64(eq->ba);
|
|
|
|
rc = -t4_wr_mbox(sc, sc->mbox, &c, sizeof(c), &c);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev,
|
|
"failed to create control queue %d: %d\n", eq->tx_chan, rc);
|
|
return (rc);
|
|
}
|
|
eq->flags |= EQ_ALLOCATED;
|
|
|
|
eq->cntxt_id = G_FW_EQ_CTRL_CMD_EQID(be32toh(c.cmpliqid_eqid));
|
|
cntxt_id = eq->cntxt_id - sc->sge.eq_start;
|
|
if (cntxt_id >= sc->sge.neq)
|
|
panic("%s: eq->cntxt_id (%d) more than the max (%d)", __func__,
|
|
cntxt_id, sc->sge.neq - 1);
|
|
sc->sge.eqmap[cntxt_id] = eq;
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static int
|
|
eth_eq_alloc(struct adapter *sc, struct vi_info *vi, struct sge_eq *eq)
|
|
{
|
|
int rc, cntxt_id;
|
|
struct fw_eq_eth_cmd c;
|
|
int qsize = eq->sidx + sc->params.sge.spg_len / EQ_ESIZE;
|
|
|
|
bzero(&c, sizeof(c));
|
|
|
|
c.op_to_vfn = htobe32(V_FW_CMD_OP(FW_EQ_ETH_CMD) | F_FW_CMD_REQUEST |
|
|
F_FW_CMD_WRITE | F_FW_CMD_EXEC | V_FW_EQ_ETH_CMD_PFN(sc->pf) |
|
|
V_FW_EQ_ETH_CMD_VFN(0));
|
|
c.alloc_to_len16 = htobe32(F_FW_EQ_ETH_CMD_ALLOC |
|
|
F_FW_EQ_ETH_CMD_EQSTART | FW_LEN16(c));
|
|
c.autoequiqe_to_viid = htobe32(F_FW_EQ_ETH_CMD_AUTOEQUIQE |
|
|
F_FW_EQ_ETH_CMD_AUTOEQUEQE | V_FW_EQ_ETH_CMD_VIID(vi->viid));
|
|
c.fetchszm_to_iqid =
|
|
htobe32(V_FW_EQ_ETH_CMD_HOSTFCMODE(X_HOSTFCMODE_NONE) |
|
|
V_FW_EQ_ETH_CMD_PCIECHN(eq->tx_chan) | F_FW_EQ_ETH_CMD_FETCHRO |
|
|
V_FW_EQ_ETH_CMD_IQID(eq->iqid));
|
|
c.dcaen_to_eqsize = htobe32(V_FW_EQ_ETH_CMD_FBMIN(X_FETCHBURSTMIN_64B) |
|
|
V_FW_EQ_ETH_CMD_FBMAX(X_FETCHBURSTMAX_512B) |
|
|
V_FW_EQ_ETH_CMD_EQSIZE(qsize));
|
|
c.eqaddr = htobe64(eq->ba);
|
|
|
|
rc = -t4_wr_mbox(sc, sc->mbox, &c, sizeof(c), &c);
|
|
if (rc != 0) {
|
|
device_printf(vi->dev,
|
|
"failed to create Ethernet egress queue: %d\n", rc);
|
|
return (rc);
|
|
}
|
|
eq->flags |= EQ_ALLOCATED;
|
|
|
|
eq->cntxt_id = G_FW_EQ_ETH_CMD_EQID(be32toh(c.eqid_pkd));
|
|
cntxt_id = eq->cntxt_id - sc->sge.eq_start;
|
|
if (cntxt_id >= sc->sge.neq)
|
|
panic("%s: eq->cntxt_id (%d) more than the max (%d)", __func__,
|
|
cntxt_id, sc->sge.neq - 1);
|
|
sc->sge.eqmap[cntxt_id] = eq;
|
|
|
|
return (rc);
|
|
}
|
|
|
|
#ifdef TCP_OFFLOAD
|
|
static int
|
|
ofld_eq_alloc(struct adapter *sc, struct vi_info *vi, struct sge_eq *eq)
|
|
{
|
|
int rc, cntxt_id;
|
|
struct fw_eq_ofld_cmd c;
|
|
int qsize = eq->sidx + sc->params.sge.spg_len / EQ_ESIZE;
|
|
|
|
bzero(&c, sizeof(c));
|
|
|
|
c.op_to_vfn = htonl(V_FW_CMD_OP(FW_EQ_OFLD_CMD) | F_FW_CMD_REQUEST |
|
|
F_FW_CMD_WRITE | F_FW_CMD_EXEC | V_FW_EQ_OFLD_CMD_PFN(sc->pf) |
|
|
V_FW_EQ_OFLD_CMD_VFN(0));
|
|
c.alloc_to_len16 = htonl(F_FW_EQ_OFLD_CMD_ALLOC |
|
|
F_FW_EQ_OFLD_CMD_EQSTART | FW_LEN16(c));
|
|
c.fetchszm_to_iqid =
|
|
htonl(V_FW_EQ_OFLD_CMD_HOSTFCMODE(X_HOSTFCMODE_NONE) |
|
|
V_FW_EQ_OFLD_CMD_PCIECHN(eq->tx_chan) |
|
|
F_FW_EQ_OFLD_CMD_FETCHRO | V_FW_EQ_OFLD_CMD_IQID(eq->iqid));
|
|
c.dcaen_to_eqsize =
|
|
htobe32(V_FW_EQ_OFLD_CMD_FBMIN(X_FETCHBURSTMIN_64B) |
|
|
V_FW_EQ_OFLD_CMD_FBMAX(X_FETCHBURSTMAX_512B) |
|
|
V_FW_EQ_OFLD_CMD_EQSIZE(qsize));
|
|
c.eqaddr = htobe64(eq->ba);
|
|
|
|
rc = -t4_wr_mbox(sc, sc->mbox, &c, sizeof(c), &c);
|
|
if (rc != 0) {
|
|
device_printf(vi->dev,
|
|
"failed to create egress queue for TCP offload: %d\n", rc);
|
|
return (rc);
|
|
}
|
|
eq->flags |= EQ_ALLOCATED;
|
|
|
|
eq->cntxt_id = G_FW_EQ_OFLD_CMD_EQID(be32toh(c.eqid_pkd));
|
|
cntxt_id = eq->cntxt_id - sc->sge.eq_start;
|
|
if (cntxt_id >= sc->sge.neq)
|
|
panic("%s: eq->cntxt_id (%d) more than the max (%d)", __func__,
|
|
cntxt_id, sc->sge.neq - 1);
|
|
sc->sge.eqmap[cntxt_id] = eq;
|
|
|
|
return (rc);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
alloc_eq(struct adapter *sc, struct vi_info *vi, struct sge_eq *eq)
|
|
{
|
|
int rc, qsize;
|
|
size_t len;
|
|
|
|
mtx_init(&eq->eq_lock, eq->lockname, NULL, MTX_DEF);
|
|
|
|
qsize = eq->sidx + sc->params.sge.spg_len / EQ_ESIZE;
|
|
len = qsize * EQ_ESIZE;
|
|
rc = alloc_ring(sc, len, &eq->desc_tag, &eq->desc_map,
|
|
&eq->ba, (void **)&eq->desc);
|
|
if (rc)
|
|
return (rc);
|
|
|
|
eq->pidx = eq->cidx = 0;
|
|
eq->equeqidx = eq->dbidx = 0;
|
|
eq->doorbells = sc->doorbells;
|
|
|
|
switch (eq->flags & EQ_TYPEMASK) {
|
|
case EQ_CTRL:
|
|
rc = ctrl_eq_alloc(sc, eq);
|
|
break;
|
|
|
|
case EQ_ETH:
|
|
rc = eth_eq_alloc(sc, vi, eq);
|
|
break;
|
|
|
|
#ifdef TCP_OFFLOAD
|
|
case EQ_OFLD:
|
|
rc = ofld_eq_alloc(sc, vi, eq);
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
panic("%s: invalid eq type %d.", __func__,
|
|
eq->flags & EQ_TYPEMASK);
|
|
}
|
|
if (rc != 0) {
|
|
device_printf(sc->dev,
|
|
"failed to allocate egress queue(%d): %d\n",
|
|
eq->flags & EQ_TYPEMASK, rc);
|
|
}
|
|
|
|
if (isset(&eq->doorbells, DOORBELL_UDB) ||
|
|
isset(&eq->doorbells, DOORBELL_UDBWC) ||
|
|
isset(&eq->doorbells, DOORBELL_WCWR)) {
|
|
uint32_t s_qpp = sc->params.sge.eq_s_qpp;
|
|
uint32_t mask = (1 << s_qpp) - 1;
|
|
volatile uint8_t *udb;
|
|
|
|
udb = sc->udbs_base + UDBS_DB_OFFSET;
|
|
udb += (eq->cntxt_id >> s_qpp) << PAGE_SHIFT; /* pg offset */
|
|
eq->udb_qid = eq->cntxt_id & mask; /* id in page */
|
|
if (eq->udb_qid >= PAGE_SIZE / UDBS_SEG_SIZE)
|
|
clrbit(&eq->doorbells, DOORBELL_WCWR);
|
|
else {
|
|
udb += eq->udb_qid << UDBS_SEG_SHIFT; /* seg offset */
|
|
eq->udb_qid = 0;
|
|
}
|
|
eq->udb = (volatile void *)udb;
|
|
}
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static int
|
|
free_eq(struct adapter *sc, struct sge_eq *eq)
|
|
{
|
|
int rc;
|
|
|
|
if (eq->flags & EQ_ALLOCATED) {
|
|
switch (eq->flags & EQ_TYPEMASK) {
|
|
case EQ_CTRL:
|
|
rc = -t4_ctrl_eq_free(sc, sc->mbox, sc->pf, 0,
|
|
eq->cntxt_id);
|
|
break;
|
|
|
|
case EQ_ETH:
|
|
rc = -t4_eth_eq_free(sc, sc->mbox, sc->pf, 0,
|
|
eq->cntxt_id);
|
|
break;
|
|
|
|
#ifdef TCP_OFFLOAD
|
|
case EQ_OFLD:
|
|
rc = -t4_ofld_eq_free(sc, sc->mbox, sc->pf, 0,
|
|
eq->cntxt_id);
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
panic("%s: invalid eq type %d.", __func__,
|
|
eq->flags & EQ_TYPEMASK);
|
|
}
|
|
if (rc != 0) {
|
|
device_printf(sc->dev,
|
|
"failed to free egress queue (%d): %d\n",
|
|
eq->flags & EQ_TYPEMASK, rc);
|
|
return (rc);
|
|
}
|
|
eq->flags &= ~EQ_ALLOCATED;
|
|
}
|
|
|
|
free_ring(sc, eq->desc_tag, eq->desc_map, eq->ba, eq->desc);
|
|
|
|
if (mtx_initialized(&eq->eq_lock))
|
|
mtx_destroy(&eq->eq_lock);
|
|
|
|
bzero(eq, sizeof(*eq));
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
alloc_wrq(struct adapter *sc, struct vi_info *vi, struct sge_wrq *wrq,
|
|
struct sysctl_oid *oid)
|
|
{
|
|
int rc;
|
|
struct sysctl_ctx_list *ctx = vi ? &vi->ctx : &sc->ctx;
|
|
struct sysctl_oid_list *children = SYSCTL_CHILDREN(oid);
|
|
|
|
rc = alloc_eq(sc, vi, &wrq->eq);
|
|
if (rc)
|
|
return (rc);
|
|
|
|
wrq->adapter = sc;
|
|
TASK_INIT(&wrq->wrq_tx_task, 0, wrq_tx_drain, wrq);
|
|
TAILQ_INIT(&wrq->incomplete_wrs);
|
|
STAILQ_INIT(&wrq->wr_list);
|
|
wrq->nwr_pending = 0;
|
|
wrq->ndesc_needed = 0;
|
|
|
|
SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "cntxt_id", CTLFLAG_RD,
|
|
&wrq->eq.cntxt_id, 0, "SGE context id of the queue");
|
|
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "cidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &wrq->eq.cidx, 0, sysctl_uint16, "I",
|
|
"consumer index");
|
|
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "pidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &wrq->eq.pidx, 0, sysctl_uint16, "I",
|
|
"producer index");
|
|
SYSCTL_ADD_UQUAD(ctx, children, OID_AUTO, "tx_wrs_direct", CTLFLAG_RD,
|
|
&wrq->tx_wrs_direct, "# of work requests (direct)");
|
|
SYSCTL_ADD_UQUAD(ctx, children, OID_AUTO, "tx_wrs_copied", CTLFLAG_RD,
|
|
&wrq->tx_wrs_copied, "# of work requests (copied)");
|
|
|
|
return (rc);
|
|
}
|
|
|
|
static int
|
|
free_wrq(struct adapter *sc, struct sge_wrq *wrq)
|
|
{
|
|
int rc;
|
|
|
|
rc = free_eq(sc, &wrq->eq);
|
|
if (rc)
|
|
return (rc);
|
|
|
|
bzero(wrq, sizeof(*wrq));
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
alloc_txq(struct vi_info *vi, struct sge_txq *txq, int idx,
|
|
struct sysctl_oid *oid)
|
|
{
|
|
int rc;
|
|
struct port_info *pi = vi->pi;
|
|
struct adapter *sc = pi->adapter;
|
|
struct sge_eq *eq = &txq->eq;
|
|
char name[16];
|
|
struct sysctl_oid_list *children = SYSCTL_CHILDREN(oid);
|
|
|
|
rc = mp_ring_alloc(&txq->r, eq->sidx, txq, eth_tx, can_resume_eth_tx,
|
|
M_CXGBE, M_WAITOK);
|
|
if (rc != 0) {
|
|
device_printf(sc->dev, "failed to allocate mp_ring: %d\n", rc);
|
|
return (rc);
|
|
}
|
|
|
|
rc = alloc_eq(sc, vi, eq);
|
|
if (rc != 0) {
|
|
mp_ring_free(txq->r);
|
|
txq->r = NULL;
|
|
return (rc);
|
|
}
|
|
|
|
/* Can't fail after this point. */
|
|
|
|
TASK_INIT(&txq->tx_reclaim_task, 0, tx_reclaim, eq);
|
|
txq->ifp = vi->ifp;
|
|
txq->gl = sglist_alloc(TX_SGL_SEGS, M_WAITOK);
|
|
txq->cpl_ctrl0 = htobe32(V_TXPKT_OPCODE(CPL_TX_PKT) |
|
|
V_TXPKT_INTF(pi->tx_chan) | V_TXPKT_VF_VLD(1) |
|
|
V_TXPKT_VF(vi->viid));
|
|
txq->sdesc = malloc(eq->sidx * sizeof(struct tx_sdesc), M_CXGBE,
|
|
M_ZERO | M_WAITOK);
|
|
|
|
snprintf(name, sizeof(name), "%d", idx);
|
|
oid = SYSCTL_ADD_NODE(&vi->ctx, children, OID_AUTO, name, CTLFLAG_RD,
|
|
NULL, "tx queue");
|
|
children = SYSCTL_CHILDREN(oid);
|
|
|
|
SYSCTL_ADD_UINT(&vi->ctx, children, OID_AUTO, "cntxt_id", CTLFLAG_RD,
|
|
&eq->cntxt_id, 0, "SGE context id of the queue");
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "cidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &eq->cidx, 0, sysctl_uint16, "I",
|
|
"consumer index");
|
|
SYSCTL_ADD_PROC(&vi->ctx, children, OID_AUTO, "pidx",
|
|
CTLTYPE_INT | CTLFLAG_RD, &eq->pidx, 0, sysctl_uint16, "I",
|
|
"producer index");
|
|
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "txcsum", CTLFLAG_RD,
|
|
&txq->txcsum, "# of times hardware assisted with checksum");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "vlan_insertion",
|
|
CTLFLAG_RD, &txq->vlan_insertion,
|
|
"# of times hardware inserted 802.1Q tag");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "tso_wrs", CTLFLAG_RD,
|
|
&txq->tso_wrs, "# of TSO work requests");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "imm_wrs", CTLFLAG_RD,
|
|
&txq->imm_wrs, "# of work requests with immediate data");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "sgl_wrs", CTLFLAG_RD,
|
|
&txq->sgl_wrs, "# of work requests with direct SGL");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "txpkt_wrs", CTLFLAG_RD,
|
|
&txq->txpkt_wrs, "# of txpkt work requests (one pkt/WR)");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "txpkts0_wrs",
|
|
CTLFLAG_RD, &txq->txpkts0_wrs,
|
|
"# of txpkts (type 0) work requests");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "txpkts1_wrs",
|
|
CTLFLAG_RD, &txq->txpkts1_wrs,
|
|
"# of txpkts (type 1) work requests");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "txpkts0_pkts",
|
|
CTLFLAG_RD, &txq->txpkts0_pkts,
|
|
"# of frames tx'd using type0 txpkts work requests");
|
|
SYSCTL_ADD_UQUAD(&vi->ctx, children, OID_AUTO, "txpkts1_pkts",
|
|
CTLFLAG_RD, &txq->txpkts1_pkts,
|
|
"# of frames tx'd using type1 txpkts work requests");
|
|
|
|
SYSCTL_ADD_COUNTER_U64(&vi->ctx, children, OID_AUTO, "r_enqueues",
|
|
CTLFLAG_RD, &txq->r->enqueues,
|
|
"# of enqueues to the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(&vi->ctx, children, OID_AUTO, "r_drops",
|
|
CTLFLAG_RD, &txq->r->drops,
|
|
"# of drops in the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(&vi->ctx, children, OID_AUTO, "r_starts",
|
|
CTLFLAG_RD, &txq->r->starts,
|
|
"# of normal consumer starts in the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(&vi->ctx, children, OID_AUTO, "r_stalls",
|
|
CTLFLAG_RD, &txq->r->stalls,
|
|
"# of consumer stalls in the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(&vi->ctx, children, OID_AUTO, "r_restarts",
|
|
CTLFLAG_RD, &txq->r->restarts,
|
|
"# of consumer restarts in the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(&vi->ctx, children, OID_AUTO, "r_abdications",
|
|
CTLFLAG_RD, &txq->r->abdications,
|
|
"# of consumer abdications in the mp_ring for this queue");
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
free_txq(struct vi_info *vi, struct sge_txq *txq)
|
|
{
|
|
int rc;
|
|
struct adapter *sc = vi->pi->adapter;
|
|
struct sge_eq *eq = &txq->eq;
|
|
|
|
rc = free_eq(sc, eq);
|
|
if (rc)
|
|
return (rc);
|
|
|
|
sglist_free(txq->gl);
|
|
free(txq->sdesc, M_CXGBE);
|
|
mp_ring_free(txq->r);
|
|
|
|
bzero(txq, sizeof(*txq));
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
oneseg_dma_callback(void *arg, bus_dma_segment_t *segs, int nseg, int error)
|
|
{
|
|
bus_addr_t *ba = arg;
|
|
|
|
KASSERT(nseg == 1,
|
|
("%s meant for single segment mappings only.", __func__));
|
|
|
|
*ba = error ? 0 : segs->ds_addr;
|
|
}
|
|
|
|
static inline void
|
|
ring_fl_db(struct adapter *sc, struct sge_fl *fl)
|
|
{
|
|
uint32_t n, v;
|
|
|
|
n = IDXDIFF(fl->pidx / 8, fl->dbidx, fl->sidx);
|
|
MPASS(n > 0);
|
|
|
|
wmb();
|
|
v = fl->dbval | V_PIDX(n);
|
|
if (fl->udb)
|
|
*fl->udb = htole32(v);
|
|
else
|
|
t4_write_reg(sc, MYPF_REG(A_SGE_PF_KDOORBELL), v);
|
|
IDXINCR(fl->dbidx, n, fl->sidx);
|
|
}
|
|
|
|
/*
|
|
* Fills up the freelist by allocating upto 'n' buffers. Buffers that are
|
|
* recycled do not count towards this allocation budget.
|
|
*
|
|
* Returns non-zero to indicate that this freelist should be added to the list
|
|
* of starving freelists.
|
|
*/
|
|
static int
|
|
refill_fl(struct adapter *sc, struct sge_fl *fl, int n)
|
|
{
|
|
__be64 *d;
|
|
struct fl_sdesc *sd;
|
|
uintptr_t pa;
|
|
caddr_t cl;
|
|
struct cluster_layout *cll;
|
|
struct sw_zone_info *swz;
|
|
struct cluster_metadata *clm;
|
|
uint16_t max_pidx;
|
|
uint16_t hw_cidx = fl->hw_cidx; /* stable snapshot */
|
|
|
|
FL_LOCK_ASSERT_OWNED(fl);
|
|
|
|
/*
|
|
* We always stop at the begining of the hardware descriptor that's just
|
|
* before the one with the hw cidx. This is to avoid hw pidx = hw cidx,
|
|
* which would mean an empty freelist to the chip.
|
|
*/
|
|
max_pidx = __predict_false(hw_cidx == 0) ? fl->sidx - 1 : hw_cidx - 1;
|
|
if (fl->pidx == max_pidx * 8)
|
|
return (0);
|
|
|
|
d = &fl->desc[fl->pidx];
|
|
sd = &fl->sdesc[fl->pidx];
|
|
cll = &fl->cll_def; /* default layout */
|
|
swz = &sc->sge.sw_zone_info[cll->zidx];
|
|
|
|
while (n > 0) {
|
|
|
|
if (sd->cl != NULL) {
|
|
|
|
if (sd->nmbuf == 0) {
|
|
/*
|
|
* Fast recycle without involving any atomics on
|
|
* the cluster's metadata (if the cluster has
|
|
* metadata). This happens when all frames
|
|
* received in the cluster were small enough to
|
|
* fit within a single mbuf each.
|
|
*/
|
|
fl->cl_fast_recycled++;
|
|
#ifdef INVARIANTS
|
|
clm = cl_metadata(sc, fl, &sd->cll, sd->cl);
|
|
if (clm != NULL)
|
|
MPASS(clm->refcount == 1);
|
|
#endif
|
|
goto recycled_fast;
|
|
}
|
|
|
|
/*
|
|
* Cluster is guaranteed to have metadata. Clusters
|
|
* without metadata always take the fast recycle path
|
|
* when they're recycled.
|
|
*/
|
|
clm = cl_metadata(sc, fl, &sd->cll, sd->cl);
|
|
MPASS(clm != NULL);
|
|
|
|
if (atomic_fetchadd_int(&clm->refcount, -1) == 1) {
|
|
fl->cl_recycled++;
|
|
counter_u64_add(extfree_rels, 1);
|
|
goto recycled;
|
|
}
|
|
sd->cl = NULL; /* gave up my reference */
|
|
}
|
|
MPASS(sd->cl == NULL);
|
|
alloc:
|
|
cl = uma_zalloc(swz->zone, M_NOWAIT);
|
|
if (__predict_false(cl == NULL)) {
|
|
if (cll == &fl->cll_alt || fl->cll_alt.zidx == -1 ||
|
|
fl->cll_def.zidx == fl->cll_alt.zidx)
|
|
break;
|
|
|
|
/* fall back to the safe zone */
|
|
cll = &fl->cll_alt;
|
|
swz = &sc->sge.sw_zone_info[cll->zidx];
|
|
goto alloc;
|
|
}
|
|
fl->cl_allocated++;
|
|
n--;
|
|
|
|
pa = pmap_kextract((vm_offset_t)cl);
|
|
pa += cll->region1;
|
|
sd->cl = cl;
|
|
sd->cll = *cll;
|
|
*d = htobe64(pa | cll->hwidx);
|
|
clm = cl_metadata(sc, fl, cll, cl);
|
|
if (clm != NULL) {
|
|
recycled:
|
|
#ifdef INVARIANTS
|
|
clm->sd = sd;
|
|
#endif
|
|
clm->refcount = 1;
|
|
}
|
|
sd->nmbuf = 0;
|
|
recycled_fast:
|
|
d++;
|
|
sd++;
|
|
if (__predict_false(++fl->pidx % 8 == 0)) {
|
|
uint16_t pidx = fl->pidx / 8;
|
|
|
|
if (__predict_false(pidx == fl->sidx)) {
|
|
fl->pidx = 0;
|
|
pidx = 0;
|
|
sd = fl->sdesc;
|
|
d = fl->desc;
|
|
}
|
|
if (pidx == max_pidx)
|
|
break;
|
|
|
|
if (IDXDIFF(pidx, fl->dbidx, fl->sidx) >= 4)
|
|
ring_fl_db(sc, fl);
|
|
}
|
|
}
|
|
|
|
if (fl->pidx / 8 != fl->dbidx)
|
|
ring_fl_db(sc, fl);
|
|
|
|
return (FL_RUNNING_LOW(fl) && !(fl->flags & FL_STARVING));
|
|
}
|
|
|
|
/*
|
|
* Attempt to refill all starving freelists.
|
|
*/
|
|
static void
|
|
refill_sfl(void *arg)
|
|
{
|
|
struct adapter *sc = arg;
|
|
struct sge_fl *fl, *fl_temp;
|
|
|
|
mtx_assert(&sc->sfl_lock, MA_OWNED);
|
|
TAILQ_FOREACH_SAFE(fl, &sc->sfl, link, fl_temp) {
|
|
FL_LOCK(fl);
|
|
refill_fl(sc, fl, 64);
|
|
if (FL_NOT_RUNNING_LOW(fl) || fl->flags & FL_DOOMED) {
|
|
TAILQ_REMOVE(&sc->sfl, fl, link);
|
|
fl->flags &= ~FL_STARVING;
|
|
}
|
|
FL_UNLOCK(fl);
|
|
}
|
|
|
|
if (!TAILQ_EMPTY(&sc->sfl))
|
|
callout_schedule(&sc->sfl_callout, hz / 5);
|
|
}
|
|
|
|
static int
|
|
alloc_fl_sdesc(struct sge_fl *fl)
|
|
{
|
|
|
|
fl->sdesc = malloc(fl->sidx * 8 * sizeof(struct fl_sdesc), M_CXGBE,
|
|
M_ZERO | M_WAITOK);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
free_fl_sdesc(struct adapter *sc, struct sge_fl *fl)
|
|
{
|
|
struct fl_sdesc *sd;
|
|
struct cluster_metadata *clm;
|
|
struct cluster_layout *cll;
|
|
int i;
|
|
|
|
sd = fl->sdesc;
|
|
for (i = 0; i < fl->sidx * 8; i++, sd++) {
|
|
if (sd->cl == NULL)
|
|
continue;
|
|
|
|
cll = &sd->cll;
|
|
clm = cl_metadata(sc, fl, cll, sd->cl);
|
|
if (sd->nmbuf == 0)
|
|
uma_zfree(sc->sge.sw_zone_info[cll->zidx].zone, sd->cl);
|
|
else if (clm && atomic_fetchadd_int(&clm->refcount, -1) == 1) {
|
|
uma_zfree(sc->sge.sw_zone_info[cll->zidx].zone, sd->cl);
|
|
counter_u64_add(extfree_rels, 1);
|
|
}
|
|
sd->cl = NULL;
|
|
}
|
|
|
|
free(fl->sdesc, M_CXGBE);
|
|
fl->sdesc = NULL;
|
|
}
|
|
|
|
static inline void
|
|
get_pkt_gl(struct mbuf *m, struct sglist *gl)
|
|
{
|
|
int rc;
|
|
|
|
M_ASSERTPKTHDR(m);
|
|
|
|
sglist_reset(gl);
|
|
rc = sglist_append_mbuf(gl, m);
|
|
if (__predict_false(rc != 0)) {
|
|
panic("%s: mbuf %p (%d segs) was vetted earlier but now fails "
|
|
"with %d.", __func__, m, mbuf_nsegs(m), rc);
|
|
}
|
|
|
|
KASSERT(gl->sg_nseg == mbuf_nsegs(m),
|
|
("%s: nsegs changed for mbuf %p from %d to %d", __func__, m,
|
|
mbuf_nsegs(m), gl->sg_nseg));
|
|
KASSERT(gl->sg_nseg > 0 &&
|
|
gl->sg_nseg <= (needs_tso(m) ? TX_SGL_SEGS_TSO : TX_SGL_SEGS),
|
|
("%s: %d segments, should have been 1 <= nsegs <= %d", __func__,
|
|
gl->sg_nseg, needs_tso(m) ? TX_SGL_SEGS_TSO : TX_SGL_SEGS));
|
|
}
|
|
|
|
/*
|
|
* len16 for a txpkt WR with a GL. Includes the firmware work request header.
|
|
*/
|
|
static inline u_int
|
|
txpkt_len16(u_int nsegs, u_int tso)
|
|
{
|
|
u_int n;
|
|
|
|
MPASS(nsegs > 0);
|
|
|
|
nsegs--; /* first segment is part of ulptx_sgl */
|
|
n = sizeof(struct fw_eth_tx_pkt_wr) + sizeof(struct cpl_tx_pkt_core) +
|
|
sizeof(struct ulptx_sgl) + 8 * ((3 * nsegs) / 2 + (nsegs & 1));
|
|
if (tso)
|
|
n += sizeof(struct cpl_tx_pkt_lso_core);
|
|
|
|
return (howmany(n, 16));
|
|
}
|
|
|
|
/*
|
|
* len16 for a txpkts type 0 WR with a GL. Does not include the firmware work
|
|
* request header.
|
|
*/
|
|
static inline u_int
|
|
txpkts0_len16(u_int nsegs)
|
|
{
|
|
u_int n;
|
|
|
|
MPASS(nsegs > 0);
|
|
|
|
nsegs--; /* first segment is part of ulptx_sgl */
|
|
n = sizeof(struct ulp_txpkt) + sizeof(struct ulptx_idata) +
|
|
sizeof(struct cpl_tx_pkt_core) + sizeof(struct ulptx_sgl) +
|
|
8 * ((3 * nsegs) / 2 + (nsegs & 1));
|
|
|
|
return (howmany(n, 16));
|
|
}
|
|
|
|
/*
|
|
* len16 for a txpkts type 1 WR with a GL. Does not include the firmware work
|
|
* request header.
|
|
*/
|
|
static inline u_int
|
|
txpkts1_len16(void)
|
|
{
|
|
u_int n;
|
|
|
|
n = sizeof(struct cpl_tx_pkt_core) + sizeof(struct ulptx_sgl);
|
|
|
|
return (howmany(n, 16));
|
|
}
|
|
|
|
static inline u_int
|
|
imm_payload(u_int ndesc)
|
|
{
|
|
u_int n;
|
|
|
|
n = ndesc * EQ_ESIZE - sizeof(struct fw_eth_tx_pkt_wr) -
|
|
sizeof(struct cpl_tx_pkt_core);
|
|
|
|
return (n);
|
|
}
|
|
|
|
/*
|
|
* Write a txpkt WR for this packet to the hardware descriptors, update the
|
|
* software descriptor, and advance the pidx. It is guaranteed that enough
|
|
* descriptors are available.
|
|
*
|
|
* The return value is the # of hardware descriptors used.
|
|
*/
|
|
static u_int
|
|
write_txpkt_wr(struct sge_txq *txq, struct fw_eth_tx_pkt_wr *wr,
|
|
struct mbuf *m0, u_int available)
|
|
{
|
|
struct sge_eq *eq = &txq->eq;
|
|
struct tx_sdesc *txsd;
|
|
struct cpl_tx_pkt_core *cpl;
|
|
uint32_t ctrl; /* used in many unrelated places */
|
|
uint64_t ctrl1;
|
|
int len16, ndesc, pktlen, nsegs;
|
|
caddr_t dst;
|
|
|
|
TXQ_LOCK_ASSERT_OWNED(txq);
|
|
M_ASSERTPKTHDR(m0);
|
|
MPASS(available > 0 && available < eq->sidx);
|
|
|
|
len16 = mbuf_len16(m0);
|
|
nsegs = mbuf_nsegs(m0);
|
|
pktlen = m0->m_pkthdr.len;
|
|
ctrl = sizeof(struct cpl_tx_pkt_core);
|
|
if (needs_tso(m0))
|
|
ctrl += sizeof(struct cpl_tx_pkt_lso_core);
|
|
else if (pktlen <= imm_payload(2) && available >= 2) {
|
|
/* Immediate data. Recalculate len16 and set nsegs to 0. */
|
|
ctrl += pktlen;
|
|
len16 = howmany(sizeof(struct fw_eth_tx_pkt_wr) +
|
|
sizeof(struct cpl_tx_pkt_core) + pktlen, 16);
|
|
nsegs = 0;
|
|
}
|
|
ndesc = howmany(len16, EQ_ESIZE / 16);
|
|
MPASS(ndesc <= available);
|
|
|
|
/* Firmware work request header */
|
|
MPASS(wr == (void *)&eq->desc[eq->pidx]);
|
|
wr->op_immdlen = htobe32(V_FW_WR_OP(FW_ETH_TX_PKT_WR) |
|
|
V_FW_ETH_TX_PKT_WR_IMMDLEN(ctrl));
|
|
|
|
ctrl = V_FW_WR_LEN16(len16);
|
|
wr->equiq_to_len16 = htobe32(ctrl);
|
|
wr->r3 = 0;
|
|
|
|
if (needs_tso(m0)) {
|
|
struct cpl_tx_pkt_lso_core *lso = (void *)(wr + 1);
|
|
|
|
KASSERT(m0->m_pkthdr.l2hlen > 0 && m0->m_pkthdr.l3hlen > 0 &&
|
|
m0->m_pkthdr.l4hlen > 0,
|
|
("%s: mbuf %p needs TSO but missing header lengths",
|
|
__func__, m0));
|
|
|
|
ctrl = V_LSO_OPCODE(CPL_TX_PKT_LSO) | F_LSO_FIRST_SLICE |
|
|
F_LSO_LAST_SLICE | V_LSO_IPHDR_LEN(m0->m_pkthdr.l3hlen >> 2)
|
|
| V_LSO_TCPHDR_LEN(m0->m_pkthdr.l4hlen >> 2);
|
|
if (m0->m_pkthdr.l2hlen == sizeof(struct ether_vlan_header))
|
|
ctrl |= V_LSO_ETHHDR_LEN(1);
|
|
if (m0->m_pkthdr.l3hlen == sizeof(struct ip6_hdr))
|
|
ctrl |= F_LSO_IPV6;
|
|
|
|
lso->lso_ctrl = htobe32(ctrl);
|
|
lso->ipid_ofst = htobe16(0);
|
|
lso->mss = htobe16(m0->m_pkthdr.tso_segsz);
|
|
lso->seqno_offset = htobe32(0);
|
|
lso->len = htobe32(pktlen);
|
|
|
|
cpl = (void *)(lso + 1);
|
|
|
|
txq->tso_wrs++;
|
|
} else
|
|
cpl = (void *)(wr + 1);
|
|
|
|
/* Checksum offload */
|
|
ctrl1 = 0;
|
|
if (needs_l3_csum(m0) == 0)
|
|
ctrl1 |= F_TXPKT_IPCSUM_DIS;
|
|
if (needs_l4_csum(m0) == 0)
|
|
ctrl1 |= F_TXPKT_L4CSUM_DIS;
|
|
if (m0->m_pkthdr.csum_flags & (CSUM_IP | CSUM_TCP | CSUM_UDP |
|
|
CSUM_UDP_IPV6 | CSUM_TCP_IPV6 | CSUM_TSO))
|
|
txq->txcsum++; /* some hardware assistance provided */
|
|
|
|
/* VLAN tag insertion */
|
|
if (needs_vlan_insertion(m0)) {
|
|
ctrl1 |= F_TXPKT_VLAN_VLD | V_TXPKT_VLAN(m0->m_pkthdr.ether_vtag);
|
|
txq->vlan_insertion++;
|
|
}
|
|
|
|
/* CPL header */
|
|
cpl->ctrl0 = txq->cpl_ctrl0;
|
|
cpl->pack = 0;
|
|
cpl->len = htobe16(pktlen);
|
|
cpl->ctrl1 = htobe64(ctrl1);
|
|
|
|
/* SGL */
|
|
dst = (void *)(cpl + 1);
|
|
if (nsegs > 0) {
|
|
|
|
write_gl_to_txd(txq, m0, &dst, eq->sidx - ndesc < eq->pidx);
|
|
txq->sgl_wrs++;
|
|
} else {
|
|
struct mbuf *m;
|
|
|
|
for (m = m0; m != NULL; m = m->m_next) {
|
|
copy_to_txd(eq, mtod(m, caddr_t), &dst, m->m_len);
|
|
#ifdef INVARIANTS
|
|
pktlen -= m->m_len;
|
|
#endif
|
|
}
|
|
#ifdef INVARIANTS
|
|
KASSERT(pktlen == 0, ("%s: %d bytes left.", __func__, pktlen));
|
|
#endif
|
|
txq->imm_wrs++;
|
|
}
|
|
|
|
txq->txpkt_wrs++;
|
|
|
|
txsd = &txq->sdesc[eq->pidx];
|
|
txsd->m = m0;
|
|
txsd->desc_used = ndesc;
|
|
|
|
return (ndesc);
|
|
}
|
|
|
|
static int
|
|
try_txpkts(struct mbuf *m, struct mbuf *n, struct txpkts *txp, u_int available)
|
|
{
|
|
u_int needed, nsegs1, nsegs2, l1, l2;
|
|
|
|
if (cannot_use_txpkts(m) || cannot_use_txpkts(n))
|
|
return (1);
|
|
|
|
nsegs1 = mbuf_nsegs(m);
|
|
nsegs2 = mbuf_nsegs(n);
|
|
if (nsegs1 + nsegs2 == 2) {
|
|
txp->wr_type = 1;
|
|
l1 = l2 = txpkts1_len16();
|
|
} else {
|
|
txp->wr_type = 0;
|
|
l1 = txpkts0_len16(nsegs1);
|
|
l2 = txpkts0_len16(nsegs2);
|
|
}
|
|
txp->len16 = howmany(sizeof(struct fw_eth_tx_pkts_wr), 16) + l1 + l2;
|
|
needed = howmany(txp->len16, EQ_ESIZE / 16);
|
|
if (needed > SGE_MAX_WR_NDESC || needed > available)
|
|
return (1);
|
|
|
|
txp->plen = m->m_pkthdr.len + n->m_pkthdr.len;
|
|
if (txp->plen > 65535)
|
|
return (1);
|
|
|
|
txp->npkt = 2;
|
|
set_mbuf_len16(m, l1);
|
|
set_mbuf_len16(n, l2);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
add_to_txpkts(struct mbuf *m, struct txpkts *txp, u_int available)
|
|
{
|
|
u_int plen, len16, needed, nsegs;
|
|
|
|
MPASS(txp->wr_type == 0 || txp->wr_type == 1);
|
|
|
|
nsegs = mbuf_nsegs(m);
|
|
if (needs_tso(m) || (txp->wr_type == 1 && nsegs != 1))
|
|
return (1);
|
|
|
|
plen = txp->plen + m->m_pkthdr.len;
|
|
if (plen > 65535)
|
|
return (1);
|
|
|
|
if (txp->wr_type == 0)
|
|
len16 = txpkts0_len16(nsegs);
|
|
else
|
|
len16 = txpkts1_len16();
|
|
needed = howmany(txp->len16 + len16, EQ_ESIZE / 16);
|
|
if (needed > SGE_MAX_WR_NDESC || needed > available)
|
|
return (1);
|
|
|
|
txp->npkt++;
|
|
txp->plen = plen;
|
|
txp->len16 += len16;
|
|
set_mbuf_len16(m, len16);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Write a txpkts WR for the packets in txp to the hardware descriptors, update
|
|
* the software descriptor, and advance the pidx. It is guaranteed that enough
|
|
* descriptors are available.
|
|
*
|
|
* The return value is the # of hardware descriptors used.
|
|
*/
|
|
static u_int
|
|
write_txpkts_wr(struct sge_txq *txq, struct fw_eth_tx_pkts_wr *wr,
|
|
struct mbuf *m0, const struct txpkts *txp, u_int available)
|
|
{
|
|
struct sge_eq *eq = &txq->eq;
|
|
struct tx_sdesc *txsd;
|
|
struct cpl_tx_pkt_core *cpl;
|
|
uint32_t ctrl;
|
|
uint64_t ctrl1;
|
|
int ndesc, checkwrap;
|
|
struct mbuf *m;
|
|
void *flitp;
|
|
|
|
TXQ_LOCK_ASSERT_OWNED(txq);
|
|
MPASS(txp->npkt > 0);
|
|
MPASS(txp->plen < 65536);
|
|
MPASS(m0 != NULL);
|
|
MPASS(m0->m_nextpkt != NULL);
|
|
MPASS(txp->len16 <= howmany(SGE_MAX_WR_LEN, 16));
|
|
MPASS(available > 0 && available < eq->sidx);
|
|
|
|
ndesc = howmany(txp->len16, EQ_ESIZE / 16);
|
|
MPASS(ndesc <= available);
|
|
|
|
MPASS(wr == (void *)&eq->desc[eq->pidx]);
|
|
wr->op_pkd = htobe32(V_FW_WR_OP(FW_ETH_TX_PKTS_WR));
|
|
ctrl = V_FW_WR_LEN16(txp->len16);
|
|
wr->equiq_to_len16 = htobe32(ctrl);
|
|
wr->plen = htobe16(txp->plen);
|
|
wr->npkt = txp->npkt;
|
|
wr->r3 = 0;
|
|
wr->type = txp->wr_type;
|
|
flitp = wr + 1;
|
|
|
|
/*
|
|
* At this point we are 16B into a hardware descriptor. If checkwrap is
|
|
* set then we know the WR is going to wrap around somewhere. We'll
|
|
* check for that at appropriate points.
|
|
*/
|
|
checkwrap = eq->sidx - ndesc < eq->pidx;
|
|
for (m = m0; m != NULL; m = m->m_nextpkt) {
|
|
if (txp->wr_type == 0) {
|
|
struct ulp_txpkt *ulpmc;
|
|
struct ulptx_idata *ulpsc;
|
|
|
|
/* ULP master command */
|
|
ulpmc = flitp;
|
|
ulpmc->cmd_dest = htobe32(V_ULPTX_CMD(ULP_TX_PKT) |
|
|
V_ULP_TXPKT_DEST(0) | V_ULP_TXPKT_FID(eq->iqid));
|
|
ulpmc->len = htobe32(mbuf_len16(m));
|
|
|
|
/* ULP subcommand */
|
|
ulpsc = (void *)(ulpmc + 1);
|
|
ulpsc->cmd_more = htobe32(V_ULPTX_CMD(ULP_TX_SC_IMM) |
|
|
F_ULP_TX_SC_MORE);
|
|
ulpsc->len = htobe32(sizeof(struct cpl_tx_pkt_core));
|
|
|
|
cpl = (void *)(ulpsc + 1);
|
|
if (checkwrap &&
|
|
(uintptr_t)cpl == (uintptr_t)&eq->desc[eq->sidx])
|
|
cpl = (void *)&eq->desc[0];
|
|
txq->txpkts0_pkts += txp->npkt;
|
|
txq->txpkts0_wrs++;
|
|
} else {
|
|
cpl = flitp;
|
|
txq->txpkts1_pkts += txp->npkt;
|
|
txq->txpkts1_wrs++;
|
|
}
|
|
|
|
/* Checksum offload */
|
|
ctrl1 = 0;
|
|
if (needs_l3_csum(m) == 0)
|
|
ctrl1 |= F_TXPKT_IPCSUM_DIS;
|
|
if (needs_l4_csum(m) == 0)
|
|
ctrl1 |= F_TXPKT_L4CSUM_DIS;
|
|
if (m->m_pkthdr.csum_flags & (CSUM_IP | CSUM_TCP | CSUM_UDP |
|
|
CSUM_UDP_IPV6 | CSUM_TCP_IPV6 | CSUM_TSO))
|
|
txq->txcsum++; /* some hardware assistance provided */
|
|
|
|
/* VLAN tag insertion */
|
|
if (needs_vlan_insertion(m)) {
|
|
ctrl1 |= F_TXPKT_VLAN_VLD |
|
|
V_TXPKT_VLAN(m->m_pkthdr.ether_vtag);
|
|
txq->vlan_insertion++;
|
|
}
|
|
|
|
/* CPL header */
|
|
cpl->ctrl0 = txq->cpl_ctrl0;
|
|
cpl->pack = 0;
|
|
cpl->len = htobe16(m->m_pkthdr.len);
|
|
cpl->ctrl1 = htobe64(ctrl1);
|
|
|
|
flitp = cpl + 1;
|
|
if (checkwrap &&
|
|
(uintptr_t)flitp == (uintptr_t)&eq->desc[eq->sidx])
|
|
flitp = (void *)&eq->desc[0];
|
|
|
|
write_gl_to_txd(txq, m, (caddr_t *)(&flitp), checkwrap);
|
|
|
|
}
|
|
|
|
txsd = &txq->sdesc[eq->pidx];
|
|
txsd->m = m0;
|
|
txsd->desc_used = ndesc;
|
|
|
|
return (ndesc);
|
|
}
|
|
|
|
/*
|
|
* If the SGL ends on an address that is not 16 byte aligned, this function will
|
|
* add a 0 filled flit at the end.
|
|
*/
|
|
static void
|
|
write_gl_to_txd(struct sge_txq *txq, struct mbuf *m, caddr_t *to, int checkwrap)
|
|
{
|
|
struct sge_eq *eq = &txq->eq;
|
|
struct sglist *gl = txq->gl;
|
|
struct sglist_seg *seg;
|
|
__be64 *flitp, *wrap;
|
|
struct ulptx_sgl *usgl;
|
|
int i, nflits, nsegs;
|
|
|
|
KASSERT(((uintptr_t)(*to) & 0xf) == 0,
|
|
("%s: SGL must start at a 16 byte boundary: %p", __func__, *to));
|
|
MPASS((uintptr_t)(*to) >= (uintptr_t)&eq->desc[0]);
|
|
MPASS((uintptr_t)(*to) < (uintptr_t)&eq->desc[eq->sidx]);
|
|
|
|
get_pkt_gl(m, gl);
|
|
nsegs = gl->sg_nseg;
|
|
MPASS(nsegs > 0);
|
|
|
|
nflits = (3 * (nsegs - 1)) / 2 + ((nsegs - 1) & 1) + 2;
|
|
flitp = (__be64 *)(*to);
|
|
wrap = (__be64 *)(&eq->desc[eq->sidx]);
|
|
seg = &gl->sg_segs[0];
|
|
usgl = (void *)flitp;
|
|
|
|
/*
|
|
* We start at a 16 byte boundary somewhere inside the tx descriptor
|
|
* ring, so we're at least 16 bytes away from the status page. There is
|
|
* no chance of a wrap around in the middle of usgl (which is 16 bytes).
|
|
*/
|
|
|
|
usgl->cmd_nsge = htobe32(V_ULPTX_CMD(ULP_TX_SC_DSGL) |
|
|
V_ULPTX_NSGE(nsegs));
|
|
usgl->len0 = htobe32(seg->ss_len);
|
|
usgl->addr0 = htobe64(seg->ss_paddr);
|
|
seg++;
|
|
|
|
if (checkwrap == 0 || (uintptr_t)(flitp + nflits) <= (uintptr_t)wrap) {
|
|
|
|
/* Won't wrap around at all */
|
|
|
|
for (i = 0; i < nsegs - 1; i++, seg++) {
|
|
usgl->sge[i / 2].len[i & 1] = htobe32(seg->ss_len);
|
|
usgl->sge[i / 2].addr[i & 1] = htobe64(seg->ss_paddr);
|
|
}
|
|
if (i & 1)
|
|
usgl->sge[i / 2].len[1] = htobe32(0);
|
|
flitp += nflits;
|
|
} else {
|
|
|
|
/* Will wrap somewhere in the rest of the SGL */
|
|
|
|
/* 2 flits already written, write the rest flit by flit */
|
|
flitp = (void *)(usgl + 1);
|
|
for (i = 0; i < nflits - 2; i++) {
|
|
if (flitp == wrap)
|
|
flitp = (void *)eq->desc;
|
|
*flitp++ = get_flit(seg, nsegs - 1, i);
|
|
}
|
|
}
|
|
|
|
if (nflits & 1) {
|
|
MPASS(((uintptr_t)flitp) & 0xf);
|
|
*flitp++ = 0;
|
|
}
|
|
|
|
MPASS((((uintptr_t)flitp) & 0xf) == 0);
|
|
if (__predict_false(flitp == wrap))
|
|
*to = (void *)eq->desc;
|
|
else
|
|
*to = (void *)flitp;
|
|
}
|
|
|
|
static inline void
|
|
copy_to_txd(struct sge_eq *eq, caddr_t from, caddr_t *to, int len)
|
|
{
|
|
|
|
MPASS((uintptr_t)(*to) >= (uintptr_t)&eq->desc[0]);
|
|
MPASS((uintptr_t)(*to) < (uintptr_t)&eq->desc[eq->sidx]);
|
|
|
|
if (__predict_true((uintptr_t)(*to) + len <=
|
|
(uintptr_t)&eq->desc[eq->sidx])) {
|
|
bcopy(from, *to, len);
|
|
(*to) += len;
|
|
} else {
|
|
int portion = (uintptr_t)&eq->desc[eq->sidx] - (uintptr_t)(*to);
|
|
|
|
bcopy(from, *to, portion);
|
|
from += portion;
|
|
portion = len - portion; /* remaining */
|
|
bcopy(from, (void *)eq->desc, portion);
|
|
(*to) = (caddr_t)eq->desc + portion;
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
ring_eq_db(struct adapter *sc, struct sge_eq *eq, u_int n)
|
|
{
|
|
u_int db;
|
|
|
|
MPASS(n > 0);
|
|
|
|
db = eq->doorbells;
|
|
if (n > 1)
|
|
clrbit(&db, DOORBELL_WCWR);
|
|
wmb();
|
|
|
|
switch (ffs(db) - 1) {
|
|
case DOORBELL_UDB:
|
|
*eq->udb = htole32(V_QID(eq->udb_qid) | V_PIDX(n));
|
|
break;
|
|
|
|
case DOORBELL_WCWR: {
|
|
volatile uint64_t *dst, *src;
|
|
int i;
|
|
|
|
/*
|
|
* Queues whose 128B doorbell segment fits in the page do not
|
|
* use relative qid (udb_qid is always 0). Only queues with
|
|
* doorbell segments can do WCWR.
|
|
*/
|
|
KASSERT(eq->udb_qid == 0 && n == 1,
|
|
("%s: inappropriate doorbell (0x%x, %d, %d) for eq %p",
|
|
__func__, eq->doorbells, n, eq->dbidx, eq));
|
|
|
|
dst = (volatile void *)((uintptr_t)eq->udb + UDBS_WR_OFFSET -
|
|
UDBS_DB_OFFSET);
|
|
i = eq->dbidx;
|
|
src = (void *)&eq->desc[i];
|
|
while (src != (void *)&eq->desc[i + 1])
|
|
*dst++ = *src++;
|
|
wmb();
|
|
break;
|
|
}
|
|
|
|
case DOORBELL_UDBWC:
|
|
*eq->udb = htole32(V_QID(eq->udb_qid) | V_PIDX(n));
|
|
wmb();
|
|
break;
|
|
|
|
case DOORBELL_KDB:
|
|
t4_write_reg(sc, MYPF_REG(A_SGE_PF_KDOORBELL),
|
|
V_QID(eq->cntxt_id) | V_PIDX(n));
|
|
break;
|
|
}
|
|
|
|
IDXINCR(eq->dbidx, n, eq->sidx);
|
|
}
|
|
|
|
static inline u_int
|
|
reclaimable_tx_desc(struct sge_eq *eq)
|
|
{
|
|
uint16_t hw_cidx;
|
|
|
|
hw_cidx = read_hw_cidx(eq);
|
|
return (IDXDIFF(hw_cidx, eq->cidx, eq->sidx));
|
|
}
|
|
|
|
static inline u_int
|
|
total_available_tx_desc(struct sge_eq *eq)
|
|
{
|
|
uint16_t hw_cidx, pidx;
|
|
|
|
hw_cidx = read_hw_cidx(eq);
|
|
pidx = eq->pidx;
|
|
|
|
if (pidx == hw_cidx)
|
|
return (eq->sidx - 1);
|
|
else
|
|
return (IDXDIFF(hw_cidx, pidx, eq->sidx) - 1);
|
|
}
|
|
|
|
static inline uint16_t
|
|
read_hw_cidx(struct sge_eq *eq)
|
|
{
|
|
struct sge_qstat *spg = (void *)&eq->desc[eq->sidx];
|
|
uint16_t cidx = spg->cidx; /* stable snapshot */
|
|
|
|
return (be16toh(cidx));
|
|
}
|
|
|
|
/*
|
|
* Reclaim 'n' descriptors approximately.
|
|
*/
|
|
static u_int
|
|
reclaim_tx_descs(struct sge_txq *txq, u_int n)
|
|
{
|
|
struct tx_sdesc *txsd;
|
|
struct sge_eq *eq = &txq->eq;
|
|
u_int can_reclaim, reclaimed;
|
|
|
|
TXQ_LOCK_ASSERT_OWNED(txq);
|
|
MPASS(n > 0);
|
|
|
|
reclaimed = 0;
|
|
can_reclaim = reclaimable_tx_desc(eq);
|
|
while (can_reclaim && reclaimed < n) {
|
|
int ndesc;
|
|
struct mbuf *m, *nextpkt;
|
|
|
|
txsd = &txq->sdesc[eq->cidx];
|
|
ndesc = txsd->desc_used;
|
|
|
|
/* Firmware doesn't return "partial" credits. */
|
|
KASSERT(can_reclaim >= ndesc,
|
|
("%s: unexpected number of credits: %d, %d",
|
|
__func__, can_reclaim, ndesc));
|
|
|
|
for (m = txsd->m; m != NULL; m = nextpkt) {
|
|
nextpkt = m->m_nextpkt;
|
|
m->m_nextpkt = NULL;
|
|
m_freem(m);
|
|
}
|
|
reclaimed += ndesc;
|
|
can_reclaim -= ndesc;
|
|
IDXINCR(eq->cidx, ndesc, eq->sidx);
|
|
}
|
|
|
|
return (reclaimed);
|
|
}
|
|
|
|
static void
|
|
tx_reclaim(void *arg, int n)
|
|
{
|
|
struct sge_txq *txq = arg;
|
|
struct sge_eq *eq = &txq->eq;
|
|
|
|
do {
|
|
if (TXQ_TRYLOCK(txq) == 0)
|
|
break;
|
|
n = reclaim_tx_descs(txq, 32);
|
|
if (eq->cidx == eq->pidx)
|
|
eq->equeqidx = eq->pidx;
|
|
TXQ_UNLOCK(txq);
|
|
} while (n > 0);
|
|
}
|
|
|
|
static __be64
|
|
get_flit(struct sglist_seg *segs, int nsegs, int idx)
|
|
{
|
|
int i = (idx / 3) * 2;
|
|
|
|
switch (idx % 3) {
|
|
case 0: {
|
|
__be64 rc;
|
|
|
|
rc = htobe32(segs[i].ss_len);
|
|
if (i + 1 < nsegs)
|
|
rc |= (uint64_t)htobe32(segs[i + 1].ss_len) << 32;
|
|
|
|
return (rc);
|
|
}
|
|
case 1:
|
|
return (htobe64(segs[i].ss_paddr));
|
|
case 2:
|
|
return (htobe64(segs[i + 1].ss_paddr));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
find_best_refill_source(struct adapter *sc, struct sge_fl *fl, int maxp)
|
|
{
|
|
int8_t zidx, hwidx, idx;
|
|
uint16_t region1, region3;
|
|
int spare, spare_needed, n;
|
|
struct sw_zone_info *swz;
|
|
struct hw_buf_info *hwb, *hwb_list = &sc->sge.hw_buf_info[0];
|
|
|
|
/*
|
|
* Buffer Packing: Look for PAGE_SIZE or larger zone which has a bufsize
|
|
* large enough for the max payload and cluster metadata. Otherwise
|
|
* settle for the largest bufsize that leaves enough room in the cluster
|
|
* for metadata.
|
|
*
|
|
* Without buffer packing: Look for the smallest zone which has a
|
|
* bufsize large enough for the max payload. Settle for the largest
|
|
* bufsize available if there's nothing big enough for max payload.
|
|
*/
|
|
spare_needed = fl->flags & FL_BUF_PACKING ? CL_METADATA_SIZE : 0;
|
|
swz = &sc->sge.sw_zone_info[0];
|
|
hwidx = -1;
|
|
for (zidx = 0; zidx < SW_ZONE_SIZES; zidx++, swz++) {
|
|
if (swz->size > largest_rx_cluster) {
|
|
if (__predict_true(hwidx != -1))
|
|
break;
|
|
|
|
/*
|
|
* This is a misconfiguration. largest_rx_cluster is
|
|
* preventing us from finding a refill source. See
|
|
* dev.t5nex.<n>.buffer_sizes to figure out why.
|
|
*/
|
|
device_printf(sc->dev, "largest_rx_cluster=%u leaves no"
|
|
" refill source for fl %p (dma %u). Ignored.\n",
|
|
largest_rx_cluster, fl, maxp);
|
|
}
|
|
for (idx = swz->head_hwidx; idx != -1; idx = hwb->next) {
|
|
hwb = &hwb_list[idx];
|
|
spare = swz->size - hwb->size;
|
|
if (spare < spare_needed)
|
|
continue;
|
|
|
|
hwidx = idx; /* best option so far */
|
|
if (hwb->size >= maxp) {
|
|
|
|
if ((fl->flags & FL_BUF_PACKING) == 0)
|
|
goto done; /* stop looking (not packing) */
|
|
|
|
if (swz->size >= safest_rx_cluster)
|
|
goto done; /* stop looking (packing) */
|
|
}
|
|
break; /* keep looking, next zone */
|
|
}
|
|
}
|
|
done:
|
|
/* A usable hwidx has been located. */
|
|
MPASS(hwidx != -1);
|
|
hwb = &hwb_list[hwidx];
|
|
zidx = hwb->zidx;
|
|
swz = &sc->sge.sw_zone_info[zidx];
|
|
region1 = 0;
|
|
region3 = swz->size - hwb->size;
|
|
|
|
/*
|
|
* Stay within this zone and see if there is a better match when mbuf
|
|
* inlining is allowed. Remember that the hwidx's are sorted in
|
|
* decreasing order of size (so in increasing order of spare area).
|
|
*/
|
|
for (idx = hwidx; idx != -1; idx = hwb->next) {
|
|
hwb = &hwb_list[idx];
|
|
spare = swz->size - hwb->size;
|
|
|
|
if (allow_mbufs_in_cluster == 0 || hwb->size < maxp)
|
|
break;
|
|
|
|
/*
|
|
* Do not inline mbufs if doing so would violate the pad/pack
|
|
* boundary alignment requirement.
|
|
*/
|
|
if (fl_pad && (MSIZE % sc->params.sge.pad_boundary) != 0)
|
|
continue;
|
|
if (fl->flags & FL_BUF_PACKING &&
|
|
(MSIZE % sc->params.sge.pack_boundary) != 0)
|
|
continue;
|
|
|
|
if (spare < CL_METADATA_SIZE + MSIZE)
|
|
continue;
|
|
n = (spare - CL_METADATA_SIZE) / MSIZE;
|
|
if (n > howmany(hwb->size, maxp))
|
|
break;
|
|
|
|
hwidx = idx;
|
|
if (fl->flags & FL_BUF_PACKING) {
|
|
region1 = n * MSIZE;
|
|
region3 = spare - region1;
|
|
} else {
|
|
region1 = MSIZE;
|
|
region3 = spare - region1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
KASSERT(zidx >= 0 && zidx < SW_ZONE_SIZES,
|
|
("%s: bad zone %d for fl %p, maxp %d", __func__, zidx, fl, maxp));
|
|
KASSERT(hwidx >= 0 && hwidx <= SGE_FLBUF_SIZES,
|
|
("%s: bad hwidx %d for fl %p, maxp %d", __func__, hwidx, fl, maxp));
|
|
KASSERT(region1 + sc->sge.hw_buf_info[hwidx].size + region3 ==
|
|
sc->sge.sw_zone_info[zidx].size,
|
|
("%s: bad buffer layout for fl %p, maxp %d. "
|
|
"cl %d; r1 %d, payload %d, r3 %d", __func__, fl, maxp,
|
|
sc->sge.sw_zone_info[zidx].size, region1,
|
|
sc->sge.hw_buf_info[hwidx].size, region3));
|
|
if (fl->flags & FL_BUF_PACKING || region1 > 0) {
|
|
KASSERT(region3 >= CL_METADATA_SIZE,
|
|
("%s: no room for metadata. fl %p, maxp %d; "
|
|
"cl %d; r1 %d, payload %d, r3 %d", __func__, fl, maxp,
|
|
sc->sge.sw_zone_info[zidx].size, region1,
|
|
sc->sge.hw_buf_info[hwidx].size, region3));
|
|
KASSERT(region1 % MSIZE == 0,
|
|
("%s: bad mbuf region for fl %p, maxp %d. "
|
|
"cl %d; r1 %d, payload %d, r3 %d", __func__, fl, maxp,
|
|
sc->sge.sw_zone_info[zidx].size, region1,
|
|
sc->sge.hw_buf_info[hwidx].size, region3));
|
|
}
|
|
|
|
fl->cll_def.zidx = zidx;
|
|
fl->cll_def.hwidx = hwidx;
|
|
fl->cll_def.region1 = region1;
|
|
fl->cll_def.region3 = region3;
|
|
}
|
|
|
|
static void
|
|
find_safe_refill_source(struct adapter *sc, struct sge_fl *fl)
|
|
{
|
|
struct sge *s = &sc->sge;
|
|
struct hw_buf_info *hwb;
|
|
struct sw_zone_info *swz;
|
|
int spare;
|
|
int8_t hwidx;
|
|
|
|
if (fl->flags & FL_BUF_PACKING)
|
|
hwidx = s->safe_hwidx2; /* with room for metadata */
|
|
else if (allow_mbufs_in_cluster && s->safe_hwidx2 != -1) {
|
|
hwidx = s->safe_hwidx2;
|
|
hwb = &s->hw_buf_info[hwidx];
|
|
swz = &s->sw_zone_info[hwb->zidx];
|
|
spare = swz->size - hwb->size;
|
|
|
|
/* no good if there isn't room for an mbuf as well */
|
|
if (spare < CL_METADATA_SIZE + MSIZE)
|
|
hwidx = s->safe_hwidx1;
|
|
} else
|
|
hwidx = s->safe_hwidx1;
|
|
|
|
if (hwidx == -1) {
|
|
/* No fallback source */
|
|
fl->cll_alt.hwidx = -1;
|
|
fl->cll_alt.zidx = -1;
|
|
|
|
return;
|
|
}
|
|
|
|
hwb = &s->hw_buf_info[hwidx];
|
|
swz = &s->sw_zone_info[hwb->zidx];
|
|
spare = swz->size - hwb->size;
|
|
fl->cll_alt.hwidx = hwidx;
|
|
fl->cll_alt.zidx = hwb->zidx;
|
|
if (allow_mbufs_in_cluster &&
|
|
(fl_pad == 0 || (MSIZE % sc->params.sge.pad_boundary) == 0))
|
|
fl->cll_alt.region1 = ((spare - CL_METADATA_SIZE) / MSIZE) * MSIZE;
|
|
else
|
|
fl->cll_alt.region1 = 0;
|
|
fl->cll_alt.region3 = spare - fl->cll_alt.region1;
|
|
}
|
|
|
|
static void
|
|
add_fl_to_sfl(struct adapter *sc, struct sge_fl *fl)
|
|
{
|
|
mtx_lock(&sc->sfl_lock);
|
|
FL_LOCK(fl);
|
|
if ((fl->flags & FL_DOOMED) == 0) {
|
|
fl->flags |= FL_STARVING;
|
|
TAILQ_INSERT_TAIL(&sc->sfl, fl, link);
|
|
callout_reset(&sc->sfl_callout, hz / 5, refill_sfl, sc);
|
|
}
|
|
FL_UNLOCK(fl);
|
|
mtx_unlock(&sc->sfl_lock);
|
|
}
|
|
|
|
static void
|
|
handle_wrq_egr_update(struct adapter *sc, struct sge_eq *eq)
|
|
{
|
|
struct sge_wrq *wrq = (void *)eq;
|
|
|
|
atomic_readandclear_int(&eq->equiq);
|
|
taskqueue_enqueue(sc->tq[eq->tx_chan], &wrq->wrq_tx_task);
|
|
}
|
|
|
|
static void
|
|
handle_eth_egr_update(struct adapter *sc, struct sge_eq *eq)
|
|
{
|
|
struct sge_txq *txq = (void *)eq;
|
|
|
|
MPASS((eq->flags & EQ_TYPEMASK) == EQ_ETH);
|
|
|
|
atomic_readandclear_int(&eq->equiq);
|
|
mp_ring_check_drainage(txq->r, 0);
|
|
taskqueue_enqueue(sc->tq[eq->tx_chan], &txq->tx_reclaim_task);
|
|
}
|
|
|
|
static int
|
|
handle_sge_egr_update(struct sge_iq *iq, const struct rss_header *rss,
|
|
struct mbuf *m)
|
|
{
|
|
const struct cpl_sge_egr_update *cpl = (const void *)(rss + 1);
|
|
unsigned int qid = G_EGR_QID(ntohl(cpl->opcode_qid));
|
|
struct adapter *sc = iq->adapter;
|
|
struct sge *s = &sc->sge;
|
|
struct sge_eq *eq;
|
|
static void (*h[])(struct adapter *, struct sge_eq *) = {NULL,
|
|
&handle_wrq_egr_update, &handle_eth_egr_update,
|
|
&handle_wrq_egr_update};
|
|
|
|
KASSERT(m == NULL, ("%s: payload with opcode %02x", __func__,
|
|
rss->opcode));
|
|
|
|
eq = s->eqmap[qid - s->eq_start];
|
|
(*h[eq->flags & EQ_TYPEMASK])(sc, eq);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* handle_fw_msg works for both fw4_msg and fw6_msg because this is valid */
|
|
CTASSERT(offsetof(struct cpl_fw4_msg, data) == \
|
|
offsetof(struct cpl_fw6_msg, data));
|
|
|
|
static int
|
|
handle_fw_msg(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
|
|
{
|
|
struct adapter *sc = iq->adapter;
|
|
const struct cpl_fw6_msg *cpl = (const void *)(rss + 1);
|
|
|
|
KASSERT(m == NULL, ("%s: payload with opcode %02x", __func__,
|
|
rss->opcode));
|
|
|
|
if (cpl->type == FW_TYPE_RSSCPL || cpl->type == FW6_TYPE_RSSCPL) {
|
|
const struct rss_header *rss2;
|
|
|
|
rss2 = (const struct rss_header *)&cpl->data[0];
|
|
return (sc->cpl_handler[rss2->opcode](iq, rss2, m));
|
|
}
|
|
|
|
return (sc->fw_msg_handler[cpl->type](sc, &cpl->data[0]));
|
|
}
|
|
|
|
static int
|
|
sysctl_uint16(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
uint16_t *id = arg1;
|
|
int i = *id;
|
|
|
|
return sysctl_handle_int(oidp, &i, 0, req);
|
|
}
|
|
|
|
static int
|
|
sysctl_bufsizes(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
struct sge *s = arg1;
|
|
struct hw_buf_info *hwb = &s->hw_buf_info[0];
|
|
struct sw_zone_info *swz = &s->sw_zone_info[0];
|
|
int i, rc;
|
|
struct sbuf sb;
|
|
char c;
|
|
|
|
sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
|
|
for (i = 0; i < SGE_FLBUF_SIZES; i++, hwb++) {
|
|
if (hwb->zidx >= 0 && swz[hwb->zidx].size <= largest_rx_cluster)
|
|
c = '*';
|
|
else
|
|
c = '\0';
|
|
|
|
sbuf_printf(&sb, "%u%c ", hwb->size, c);
|
|
}
|
|
sbuf_trim(&sb);
|
|
sbuf_finish(&sb);
|
|
rc = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
|
|
sbuf_delete(&sb);
|
|
return (rc);
|
|
}
|