mirror of https://github.com/ipxe/ipxe.git
1805 lines
50 KiB
C
1805 lines
50 KiB
C
/**************************************************************************
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Etherboot - BOOTP/TFTP Bootstrap Program
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Skeleton NIC driver for Etherboot
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***************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2, or (at
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* your option) any later version.
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*/
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#include <errno.h>
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#include <gpxe/pci.h>
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#include <gpxe/malloc.h>
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#include <gpxe/iobuf.h>
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#include <gpxe/netdevice.h>
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#include <gpxe/infiniband.h>
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#include <gpxe/ipoib.h>
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/* to get some global routines like printf */
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#include "etherboot.h"
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/* to get the interface to the body of the program */
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#include "nic.h"
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#define CREATE_OWN 1
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#include "mt25218_imp.c"
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#include "arbel.h"
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struct ib_address_vector hack_ipoib_bcast_av;
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static const struct ib_gid arbel_no_gid = {
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{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 }
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};
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#if 0
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#define MLX_RX_MAX_FILL NUM_IPOIB_RCV_WQES
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struct mlx_nic {
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#if ! CREATE_OWN
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/** Queue pair handle */
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udqp_t ipoib_qph;
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/** Send completion queue */
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cq_t snd_cqh;
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/** Receive completion queue */
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cq_t rcv_cqh;
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#endif
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/** Broadcast Address Vector */
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ud_av_t bcast_av;
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/** RX fill level */
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unsigned int rx_fill;
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#if CREATE_OWN
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struct ib_completion_queue *own_send_cq;
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struct ib_completion_queue *own_recv_cq;
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struct ib_queue_pair *own_qp;
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#endif
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};
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static struct io_buffer *static_ipoib_tx_ring[NUM_IPOIB_SND_WQES];
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static struct io_buffer *static_ipoib_rx_ring[NUM_IPOIB_RCV_WQES];
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static struct arbel static_arbel;
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#if ! CREATE_OWN
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static struct arbel_completion_queue static_arbel_ipoib_send_cq = {
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.ci_doorbell_idx = IPOIB_SND_CQ_CI_DB_IDX,
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};
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static struct ib_completion_queue static_ipoib_send_cq = {
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.cqn = 1234, /* Only used for debug messages */
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.num_cqes = NUM_IPOIB_SND_CQES,
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.work_queues = LIST_HEAD_INIT ( static_ipoib_send_cq.work_queues ),
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.dev_priv = &static_arbel_ipoib_send_cq,
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};
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static struct arbel_completion_queue static_arbel_ipoib_recv_cq = {
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.ci_doorbell_idx = IPOIB_RCV_CQ_CI_DB_IDX,
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};
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static struct ib_completion_queue static_ipoib_recv_cq = {
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.cqn = 2345, /* Only used for debug messages */
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.num_cqes = NUM_IPOIB_RCV_CQES,
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.work_queues = LIST_HEAD_INIT ( static_ipoib_recv_cq.work_queues ),
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.dev_priv = &static_arbel_ipoib_recv_cq,
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};
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static struct arbel_queue_pair static_arbel_ipoib_qp = {
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.send = {
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.doorbell_idx = IPOIB_SND_QP_DB_IDX,
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},
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.recv = {
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.doorbell_idx = IPOIB_RCV_QP_DB_IDX,
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},
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};
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static struct ib_queue_pair static_ipoib_qp = {
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.send = {
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.qp = &static_ipoib_qp,
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.is_send = 1,
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.cq = &static_ipoib_send_cq,
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.num_wqes = NUM_IPOIB_SND_WQES,
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.iobufs = static_ipoib_tx_ring,
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.list = LIST_HEAD_INIT (static_ipoib_qp.send.list),
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.dev_priv = &static_arbel_ipoib_qp.send,
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},
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.recv = {
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.qp = &static_ipoib_qp,
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.is_send = 0,
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.cq = &static_ipoib_recv_cq,
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.num_wqes = NUM_IPOIB_RCV_WQES,
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.iobufs = static_ipoib_rx_ring,
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.list = LIST_HEAD_INIT (static_ipoib_qp.recv.list),
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.dev_priv = &static_arbel_ipoib_qp.recv,
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},
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.dev_priv = &static_arbel_ipoib_qp,
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};
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#endif
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static struct ib_device static_ibdev = {
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.dev_priv = &static_arbel,
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};
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/**
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* Open network device
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*
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* @v netdev Network device
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* @ret rc Return status code
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*/
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static int mlx_open ( struct net_device *netdev ) {
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( void ) netdev;
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return 0;
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}
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/**
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* Close network device
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*
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* @v netdev Network device
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*/
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static void mlx_close ( struct net_device *netdev ) {
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( void ) netdev;
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}
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static int arbel_post_send ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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struct ib_address_vector *av,
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struct io_buffer *iobuf );
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static int mlx_transmit_direct ( struct net_device *netdev,
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struct io_buffer *iobuf ) {
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struct mlx_nic *mlx = netdev->priv;
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int rc;
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struct ud_av_st *bcast_av = mlx->bcast_av;
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struct arbelprm_ud_address_vector *bav =
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( struct arbelprm_ud_address_vector * ) &bcast_av->av;
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struct ib_address_vector av = {
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.dest_qp = bcast_av->dest_qp,
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.qkey = bcast_av->qkey,
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.dlid = MLX_GET ( bav, rlid ),
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.rate = ( MLX_GET ( bav, max_stat_rate ) ? 1 : 4 ),
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.sl = MLX_GET ( bav, sl ),
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.gid_present = 1,
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};
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memcpy ( &av.gid, ( ( void * ) bav ) + 16, 16 );
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rc = arbel_post_send ( &static_ibdev,
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#if CREATE_OWN
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mlx->own_qp,
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#else
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&static_ipoib_qp,
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#endif
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&av, iobuf );
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return rc;
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}
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static void arbel_poll_cq ( struct ib_device *ibdev,
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struct ib_completion_queue *cq,
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ib_completer_t complete_send,
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ib_completer_t complete_recv );
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static void temp_complete_send ( struct ib_device *ibdev __unused,
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struct ib_queue_pair *qp,
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struct ib_completion *completion,
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struct io_buffer *iobuf ) {
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struct net_device *netdev = qp->owner_priv;
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DBG ( "Wahey! TX completion\n" );
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netdev_tx_complete_err ( netdev, iobuf,
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( completion->syndrome ? -EIO : 0 ) );
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}
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static void temp_complete_recv ( struct ib_device *ibdev __unused,
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struct ib_queue_pair *qp,
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struct ib_completion *completion,
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struct io_buffer *iobuf ) {
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struct net_device *netdev = qp->owner_priv;
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struct mlx_nic *mlx = netdev->priv;
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DBG ( "Yay! RX completion on %p len %zx:\n", iobuf, completion->len );
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if ( completion->syndrome ) {
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netdev_rx_err ( netdev, iobuf, -EIO );
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} else {
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iob_put ( iobuf, completion->len );
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iob_pull ( iobuf, sizeof ( struct ib_global_route_header ) );
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netdev_rx ( netdev, iobuf );
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}
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mlx->rx_fill--;
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}
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static int arbel_post_recv ( struct ib_device *ibdev,
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struct ib_queue_pair *qp,
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struct io_buffer *iobuf );
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static void mlx_refill_rx ( struct net_device *netdev ) {
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struct mlx_nic *mlx = netdev->priv;
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struct io_buffer *iobuf;
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int rc;
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while ( mlx->rx_fill < MLX_RX_MAX_FILL ) {
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iobuf = alloc_iob ( 2048 );
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if ( ! iobuf )
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break;
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DBG ( "Posting RX buffer %p:\n", iobuf );
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if ( ( rc = arbel_post_recv ( &static_ibdev,
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#if CREATE_OWN
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mlx->own_qp,
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#else
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&static_ipoib_qp,
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#endif
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iobuf ) ) != 0 ) {
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free_iob ( iobuf );
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break;
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}
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mlx->rx_fill++;
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}
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}
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/**
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* Poll for completed and received packets
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*
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* @v netdev Network device
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*/
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static void mlx_poll ( struct net_device *netdev ) {
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struct mlx_nic *mlx = netdev->priv;
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int rc;
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if ( ( rc = poll_error_buf() ) != 0 ) {
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DBG ( "poll_error_buf() failed: %s\n", strerror ( rc ) );
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return;
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}
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/* Drain event queue. We can ignore events, since we're going
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* to just poll all completion queues anyway.
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*/
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if ( ( rc = drain_eq() ) != 0 ) {
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DBG ( "drain_eq() failed: %s\n", strerror ( rc ) );
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return;
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}
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/* Poll completion queues */
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arbel_poll_cq ( &static_ibdev,
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#if CREATE_OWN
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mlx->own_send_cq,
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#else
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&static_ipoib_send_cq,
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#endif
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temp_complete_send, temp_complete_recv );
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#if 0
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arbel_poll_cq ( &static_ibdev,
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#if CREATE_OWN
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mlx->own_recv_cq,
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#else
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&static_ipoib_recv_cq,
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#endif
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temp_complete_send, temp_complete_recv );
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#endif
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mlx_refill_rx ( netdev );
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}
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/**
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* Enable or disable interrupts
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*
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* @v netdev Network device
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* @v enable Interrupts should be enabled
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*/
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static void mlx_irq ( struct net_device *netdev, int enable ) {
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( void ) netdev;
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( void ) enable;
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}
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static struct net_device_operations mlx_operations = {
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.open = mlx_open,
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.close = mlx_close,
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.transmit = mlx_transmit_direct,
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.poll = mlx_poll,
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.irq = mlx_irq,
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};
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#endif /* 0 */
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/***************************************************************************
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*
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* Queue number allocation
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*
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***************************************************************************
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*/
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/**
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* Allocate queue number
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*
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* @v q_inuse Queue usage bitmask
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* @v max_inuse Maximum number of in-use queues
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* @ret qn_offset Free queue number offset, or negative error
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*/
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static int arbel_alloc_qn_offset ( arbel_bitmask_t *q_inuse,
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unsigned int max_inuse ) {
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unsigned int qn_offset = 0;
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arbel_bitmask_t mask = 1;
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while ( qn_offset < max_inuse ) {
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if ( ( mask & *q_inuse ) == 0 ) {
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*q_inuse |= mask;
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return qn_offset;
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}
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qn_offset++;
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mask <<= 1;
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if ( ! mask ) {
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mask = 1;
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q_inuse++;
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}
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}
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return -ENFILE;
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}
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/**
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* Free queue number
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*
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* @v q_inuse Queue usage bitmask
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* @v qn_offset Queue number offset
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*/
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static void arbel_free_qn_offset ( arbel_bitmask_t *q_inuse, int qn_offset ) {
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arbel_bitmask_t mask;
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mask = ( 1 << ( qn_offset % ( 8 * sizeof ( mask ) ) ) );
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q_inuse += ( qn_offset / ( 8 * sizeof ( mask ) ) );
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*q_inuse &= ~mask;
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}
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/***************************************************************************
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*
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* HCA commands
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*
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***************************************************************************
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*/
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/**
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* Wait for Arbel command completion
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*
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* @v arbel Arbel device
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* @ret rc Return status code
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*/
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static int arbel_cmd_wait ( struct arbel *arbel,
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struct arbelprm_hca_command_register *hcr ) {
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unsigned int wait;
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for ( wait = ARBEL_HCR_MAX_WAIT_MS ; wait ; wait-- ) {
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hcr->u.dwords[6] =
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readl ( arbel->config + ARBEL_HCR_REG ( 6 ) );
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if ( MLX_GET ( hcr, go ) == 0 )
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return 0;
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mdelay ( 1 );
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}
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return -EBUSY;
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}
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/**
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* Issue HCA command
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*
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* @v arbel Arbel device
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* @v command Command opcode, flags and input/output lengths
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* @v op_mod Opcode modifier (0 if no modifier applicable)
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* @v in Input parameters
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* @v in_mod Input modifier (0 if no modifier applicable)
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* @v out Output parameters
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* @ret rc Return status code
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*/
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static int arbel_cmd ( struct arbel *arbel, unsigned long command,
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unsigned int op_mod, const void *in,
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unsigned int in_mod, void *out ) {
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struct arbelprm_hca_command_register hcr;
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unsigned int opcode = ARBEL_HCR_OPCODE ( command );
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size_t in_len = ARBEL_HCR_IN_LEN ( command );
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size_t out_len = ARBEL_HCR_OUT_LEN ( command );
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void *in_buffer;
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void *out_buffer;
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unsigned int status;
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unsigned int i;
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int rc;
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DBGC ( arbel, "Arbel %p command %02x in %zx%s out %zx%s\n",
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arbel, opcode, in_len,
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( ( command & ARBEL_HCR_IN_MBOX ) ? "(mbox)" : "" ), out_len,
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( ( command & ARBEL_HCR_OUT_MBOX ) ? "(mbox)" : "" ) );
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/* Check that HCR is free */
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if ( ( rc = arbel_cmd_wait ( arbel, &hcr ) ) != 0 ) {
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DBGC ( arbel, "Arbel %p command interface locked\n", arbel );
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return rc;
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}
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/* Prepare HCR */
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memset ( &hcr, 0, sizeof ( hcr ) );
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in_buffer = &hcr.u.dwords[0];
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if ( in_len && ( command & ARBEL_HCR_IN_MBOX ) ) {
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in_buffer = arbel->mailbox_in;
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MLX_FILL_1 ( &hcr, 1, in_param_l, virt_to_bus ( in_buffer ) );
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}
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memcpy ( in_buffer, in, in_len );
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MLX_FILL_1 ( &hcr, 2, input_modifier, in_mod );
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out_buffer = &hcr.u.dwords[3];
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if ( out_len && ( command & ARBEL_HCR_OUT_MBOX ) ) {
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out_buffer = arbel->mailbox_out;
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MLX_FILL_1 ( &hcr, 4, out_param_l,
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virt_to_bus ( out_buffer ) );
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}
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MLX_FILL_3 ( &hcr, 6,
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opcode, opcode,
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opcode_modifier, op_mod,
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go, 1 );
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DBG_HD ( &hcr, sizeof ( hcr ) );
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if ( in_len ) {
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size_t dump_len = in_len;
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if ( dump_len > 256 )
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dump_len = 256;
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DBG ( "Input:\n" );
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DBG_HD ( in, dump_len );
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}
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/* Issue command */
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for ( i = 0 ; i < ( sizeof ( hcr ) / sizeof ( hcr.u.dwords[0] ) ) ;
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i++ ) {
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writel ( hcr.u.dwords[i],
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arbel->config + ARBEL_HCR_REG ( i ) );
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barrier();
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}
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/* Wait for command completion */
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if ( ( rc = arbel_cmd_wait ( arbel, &hcr ) ) != 0 ) {
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DBGC ( arbel, "Arbel %p timed out waiting for command:\n",
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arbel );
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DBGC_HD ( arbel, &hcr, sizeof ( hcr ) );
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return rc;
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}
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/* Check command status */
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status = MLX_GET ( &hcr, status );
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if ( status != 0 ) {
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DBGC ( arbel, "Arbel %p command failed with status %02x:\n",
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arbel, status );
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DBGC_HD ( arbel, &hcr, sizeof ( hcr ) );
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return -EIO;
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}
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/* Read output parameters, if any */
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hcr.u.dwords[3] = readl ( arbel->config + ARBEL_HCR_REG ( 3 ) );
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hcr.u.dwords[4] = readl ( arbel->config + ARBEL_HCR_REG ( 4 ) );
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memcpy ( out, out_buffer, out_len );
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if ( out_len ) {
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size_t dump_len = out_len;
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if ( dump_len > 256 )
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dump_len = 256;
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DBG ( "Output:\n" );
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DBG_HD ( out, dump_len );
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}
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return 0;
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}
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static inline int
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arbel_cmd_query_dev_lim ( struct arbel *arbel,
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struct arbelprm_query_dev_lim *dev_lim ) {
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return arbel_cmd ( arbel,
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ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_DEV_LIM,
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1, sizeof ( *dev_lim ) ),
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0, NULL, 0, dev_lim );
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}
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static inline int
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arbel_cmd_sw2hw_cq ( struct arbel *arbel, unsigned long cqn,
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const struct arbelprm_completion_queue_context *cqctx ) {
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_CQ,
|
|
1, sizeof ( *cqctx ) ),
|
|
0, cqctx, cqn, NULL );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_hw2sw_cq ( struct arbel *arbel, unsigned long cqn ) {
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_VOID_CMD ( ARBEL_HCR_HW2SW_CQ ),
|
|
1, NULL, cqn, NULL );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_rst2init_qpee ( struct arbel *arbel, unsigned long qpn,
|
|
const struct arbelprm_qp_ee_state_transitions *ctx ){
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_IN_CMD ( ARBEL_HCR_RST2INIT_QPEE,
|
|
1, sizeof ( *ctx ) ),
|
|
0, ctx, qpn, NULL );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_init2rtr_qpee ( struct arbel *arbel, unsigned long qpn,
|
|
const struct arbelprm_qp_ee_state_transitions *ctx ){
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT2RTR_QPEE,
|
|
1, sizeof ( *ctx ) ),
|
|
0, ctx, qpn, NULL );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_rtr2rts_qpee ( struct arbel *arbel, unsigned long qpn,
|
|
const struct arbelprm_qp_ee_state_transitions *ctx ) {
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_IN_CMD ( ARBEL_HCR_RTR2RTS_QPEE,
|
|
1, sizeof ( *ctx ) ),
|
|
0, ctx, qpn, NULL );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_2rst_qpee ( struct arbel *arbel, unsigned long qpn ) {
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_VOID_CMD ( ARBEL_HCR_2RST_QPEE ),
|
|
0x03, NULL, qpn, NULL );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_mad_ifc ( struct arbel *arbel, union arbelprm_mad *mad ) {
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_MAD_IFC,
|
|
1, sizeof ( *mad ),
|
|
1, sizeof ( *mad ) ),
|
|
0x03, mad, PXE_IB_PORT, mad );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_read_mgm ( struct arbel *arbel, unsigned int index,
|
|
struct arbelprm_mgm_entry *mgm ) {
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_OUT_CMD ( ARBEL_HCR_READ_MGM,
|
|
1, sizeof ( *mgm ) ),
|
|
0, NULL, index, mgm );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_write_mgm ( struct arbel *arbel, unsigned int index,
|
|
const struct arbelprm_mgm_entry *mgm ) {
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_IN_CMD ( ARBEL_HCR_WRITE_MGM,
|
|
1, sizeof ( *mgm ) ),
|
|
0, mgm, index, NULL );
|
|
}
|
|
|
|
static inline int
|
|
arbel_cmd_mgid_hash ( struct arbel *arbel, const struct ib_gid *gid,
|
|
struct arbelprm_mgm_hash *hash ) {
|
|
return arbel_cmd ( arbel,
|
|
ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_MGID_HASH,
|
|
1, sizeof ( *gid ),
|
|
0, sizeof ( *hash ) ),
|
|
0, gid, 0, hash );
|
|
}
|
|
|
|
/***************************************************************************
|
|
*
|
|
* Completion queue operations
|
|
*
|
|
***************************************************************************
|
|
*/
|
|
|
|
/**
|
|
* Create completion queue
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v cq Completion queue
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_create_cq ( struct ib_device *ibdev,
|
|
struct ib_completion_queue *cq ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbel_completion_queue *arbel_cq;
|
|
struct arbelprm_completion_queue_context cqctx;
|
|
struct arbelprm_cq_ci_db_record *ci_db_rec;
|
|
struct arbelprm_cq_arm_db_record *arm_db_rec;
|
|
int cqn_offset;
|
|
unsigned int i;
|
|
int rc;
|
|
|
|
/* Find a free completion queue number */
|
|
cqn_offset = arbel_alloc_qn_offset ( arbel->cq_inuse, ARBEL_MAX_CQS );
|
|
if ( cqn_offset < 0 ) {
|
|
DBGC ( arbel, "Arbel %p out of completion queues\n", arbel );
|
|
rc = cqn_offset;
|
|
goto err_cqn_offset;
|
|
}
|
|
cq->cqn = ( arbel->limits.reserved_cqs + cqn_offset );
|
|
|
|
/* Allocate control structures */
|
|
arbel_cq = zalloc ( sizeof ( *arbel_cq ) );
|
|
if ( ! arbel_cq ) {
|
|
rc = -ENOMEM;
|
|
goto err_arbel_cq;
|
|
}
|
|
arbel_cq->ci_doorbell_idx = arbel_cq_ci_doorbell_idx ( cqn_offset );
|
|
arbel_cq->arm_doorbell_idx = arbel_cq_arm_doorbell_idx ( cqn_offset );
|
|
|
|
/* Allocate completion queue itself */
|
|
arbel_cq->cqe_size = ( cq->num_cqes * sizeof ( arbel_cq->cqe[0] ) );
|
|
arbel_cq->cqe = malloc_dma ( arbel_cq->cqe_size,
|
|
sizeof ( arbel_cq->cqe[0] ) );
|
|
if ( ! arbel_cq->cqe ) {
|
|
rc = -ENOMEM;
|
|
goto err_cqe;
|
|
}
|
|
memset ( arbel_cq->cqe, 0, arbel_cq->cqe_size );
|
|
for ( i = 0 ; i < cq->num_cqes ; i++ ) {
|
|
MLX_FILL_1 ( &arbel_cq->cqe[i].normal, 7, owner, 1 );
|
|
}
|
|
barrier();
|
|
|
|
/* Initialise doorbell records */
|
|
ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci;
|
|
MLX_FILL_1 ( ci_db_rec, 0, counter, 0 );
|
|
MLX_FILL_2 ( ci_db_rec, 1,
|
|
res, ARBEL_UAR_RES_CQ_CI,
|
|
cq_number, cq->cqn );
|
|
arm_db_rec = &arbel->db_rec[arbel_cq->arm_doorbell_idx].cq_arm;
|
|
MLX_FILL_1 ( arm_db_rec, 0, counter, 0 );
|
|
MLX_FILL_2 ( arm_db_rec, 1,
|
|
res, ARBEL_UAR_RES_CQ_ARM,
|
|
cq_number, cq->cqn );
|
|
|
|
/* Hand queue over to hardware */
|
|
memset ( &cqctx, 0, sizeof ( cqctx ) );
|
|
MLX_FILL_1 ( &cqctx, 0, st, 0xa /* "Event fired" */ );
|
|
MLX_FILL_1 ( &cqctx, 2, start_address_l,
|
|
virt_to_bus ( arbel_cq->cqe ) );
|
|
MLX_FILL_2 ( &cqctx, 3,
|
|
usr_page, arbel->limits.reserved_uars,
|
|
log_cq_size, fls ( cq->num_cqes - 1 ) );
|
|
MLX_FILL_1 ( &cqctx, 5, c_eqn, arbel->eqn );
|
|
MLX_FILL_1 ( &cqctx, 6, pd, ARBEL_GLOBAL_PD );
|
|
MLX_FILL_1 ( &cqctx, 7, l_key, arbel->reserved_lkey );
|
|
MLX_FILL_1 ( &cqctx, 12, cqn, cq->cqn );
|
|
MLX_FILL_1 ( &cqctx, 13,
|
|
cq_ci_db_record, arbel_cq->ci_doorbell_idx );
|
|
MLX_FILL_1 ( &cqctx, 14,
|
|
cq_state_db_record, arbel_cq->arm_doorbell_idx );
|
|
if ( ( rc = arbel_cmd_sw2hw_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p SW2HW_CQ failed: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
goto err_sw2hw_cq;
|
|
}
|
|
|
|
cq->dev_priv = arbel_cq;
|
|
return 0;
|
|
|
|
err_sw2hw_cq:
|
|
MLX_FILL_1 ( ci_db_rec, 1, res, ARBEL_UAR_RES_NONE );
|
|
MLX_FILL_1 ( arm_db_rec, 1, res, ARBEL_UAR_RES_NONE );
|
|
free_dma ( arbel_cq->cqe, arbel_cq->cqe_size );
|
|
err_cqe:
|
|
free ( arbel_cq );
|
|
err_arbel_cq:
|
|
arbel_free_qn_offset ( arbel->cq_inuse, cqn_offset );
|
|
err_cqn_offset:
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Destroy completion queue
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v cq Completion queue
|
|
*/
|
|
static void arbel_destroy_cq ( struct ib_device *ibdev,
|
|
struct ib_completion_queue *cq ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbel_completion_queue *arbel_cq = cq->dev_priv;
|
|
struct arbelprm_cq_ci_db_record *ci_db_rec;
|
|
struct arbelprm_cq_arm_db_record *arm_db_rec;
|
|
int cqn_offset;
|
|
int rc;
|
|
|
|
/* Take ownership back from hardware */
|
|
if ( ( rc = arbel_cmd_hw2sw_cq ( arbel, cq->cqn ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p FATAL HW2SW_CQ failed on CQN %#lx: "
|
|
"%s\n", arbel, cq->cqn, strerror ( rc ) );
|
|
/* Leak memory and return; at least we avoid corruption */
|
|
return;
|
|
}
|
|
|
|
/* Clear doorbell records */
|
|
ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci;
|
|
arm_db_rec = &arbel->db_rec[arbel_cq->arm_doorbell_idx].cq_arm;
|
|
MLX_FILL_1 ( ci_db_rec, 1, res, ARBEL_UAR_RES_NONE );
|
|
MLX_FILL_1 ( arm_db_rec, 1, res, ARBEL_UAR_RES_NONE );
|
|
|
|
/* Free memory */
|
|
free_dma ( arbel_cq->cqe, arbel_cq->cqe_size );
|
|
free ( arbel_cq );
|
|
|
|
/* Mark queue number as free */
|
|
cqn_offset = ( cq->cqn - arbel->limits.reserved_cqs );
|
|
arbel_free_qn_offset ( arbel->cq_inuse, cqn_offset );
|
|
|
|
cq->dev_priv = NULL;
|
|
}
|
|
|
|
/***************************************************************************
|
|
*
|
|
* Queue pair operations
|
|
*
|
|
***************************************************************************
|
|
*/
|
|
|
|
/**
|
|
* Create send work queue
|
|
*
|
|
* @v arbel_send_wq Send work queue
|
|
* @v num_wqes Number of work queue entries
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_create_send_wq ( struct arbel_send_work_queue *arbel_send_wq,
|
|
unsigned int num_wqes ) {
|
|
struct arbelprm_ud_send_wqe *wqe;
|
|
struct arbelprm_ud_send_wqe *next_wqe;
|
|
unsigned int wqe_idx_mask;
|
|
unsigned int i;
|
|
|
|
/* Allocate work queue */
|
|
arbel_send_wq->wqe_size = ( num_wqes *
|
|
sizeof ( arbel_send_wq->wqe[0] ) );
|
|
arbel_send_wq->wqe = malloc_dma ( arbel_send_wq->wqe_size,
|
|
sizeof ( arbel_send_wq->wqe[0] ) );
|
|
if ( ! arbel_send_wq->wqe )
|
|
return -ENOMEM;
|
|
memset ( arbel_send_wq->wqe, 0, arbel_send_wq->wqe_size );
|
|
|
|
/* Link work queue entries */
|
|
wqe_idx_mask = ( num_wqes - 1 );
|
|
for ( i = 0 ; i < num_wqes ; i++ ) {
|
|
wqe = &arbel_send_wq->wqe[i].ud;
|
|
next_wqe = &arbel_send_wq->wqe[ ( i + 1 ) & wqe_idx_mask ].ud;
|
|
MLX_FILL_1 ( &wqe->next, 0, nda_31_6,
|
|
( virt_to_bus ( next_wqe ) >> 6 ) );
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Create receive work queue
|
|
*
|
|
* @v arbel_recv_wq Receive work queue
|
|
* @v num_wqes Number of work queue entries
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_create_recv_wq ( struct arbel_recv_work_queue *arbel_recv_wq,
|
|
unsigned int num_wqes ) {
|
|
struct arbelprm_recv_wqe *wqe;
|
|
struct arbelprm_recv_wqe *next_wqe;
|
|
unsigned int wqe_idx_mask;
|
|
size_t nds;
|
|
unsigned int i;
|
|
unsigned int j;
|
|
|
|
/* Allocate work queue */
|
|
arbel_recv_wq->wqe_size = ( num_wqes *
|
|
sizeof ( arbel_recv_wq->wqe[0] ) );
|
|
arbel_recv_wq->wqe = malloc_dma ( arbel_recv_wq->wqe_size,
|
|
sizeof ( arbel_recv_wq->wqe[0] ) );
|
|
if ( ! arbel_recv_wq->wqe )
|
|
return -ENOMEM;
|
|
memset ( arbel_recv_wq->wqe, 0, arbel_recv_wq->wqe_size );
|
|
|
|
/* Link work queue entries */
|
|
wqe_idx_mask = ( num_wqes - 1 );
|
|
nds = ( ( offsetof ( typeof ( *wqe ), data ) +
|
|
sizeof ( wqe->data[0] ) ) >> 4 );
|
|
for ( i = 0 ; i < num_wqes ; i++ ) {
|
|
wqe = &arbel_recv_wq->wqe[i].recv;
|
|
next_wqe = &arbel_recv_wq->wqe[( i + 1 ) & wqe_idx_mask].recv;
|
|
MLX_FILL_1 ( &wqe->next, 0, nda_31_6,
|
|
( virt_to_bus ( next_wqe ) >> 6 ) );
|
|
MLX_FILL_1 ( &wqe->next, 1, nds, ( sizeof ( *wqe ) / 16 ) );
|
|
for ( j = 0 ; ( ( ( void * ) &wqe->data[j] ) <
|
|
( ( void * ) ( wqe + 1 ) ) ) ; j++ ) {
|
|
MLX_FILL_1 ( &wqe->data[j], 1,
|
|
l_key, ARBEL_INVALID_LKEY );
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Create queue pair
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v qp Queue pair
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_create_qp ( struct ib_device *ibdev,
|
|
struct ib_queue_pair *qp ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbel_queue_pair *arbel_qp;
|
|
struct arbelprm_qp_ee_state_transitions qpctx;
|
|
struct arbelprm_qp_db_record *send_db_rec;
|
|
struct arbelprm_qp_db_record *recv_db_rec;
|
|
int qpn_offset;
|
|
int rc;
|
|
|
|
/* Find a free queue pair number */
|
|
qpn_offset = arbel_alloc_qn_offset ( arbel->qp_inuse, ARBEL_MAX_QPS );
|
|
if ( qpn_offset < 0 ) {
|
|
DBGC ( arbel, "Arbel %p out of queue pairs\n", arbel );
|
|
rc = qpn_offset;
|
|
goto err_qpn_offset;
|
|
}
|
|
qp->qpn = ( ARBEL_QPN_BASE + arbel->limits.reserved_qps + qpn_offset );
|
|
|
|
/* Allocate control structures */
|
|
arbel_qp = zalloc ( sizeof ( *arbel_qp ) );
|
|
if ( ! arbel_qp ) {
|
|
rc = -ENOMEM;
|
|
goto err_arbel_qp;
|
|
}
|
|
arbel_qp->send.doorbell_idx = arbel_send_doorbell_idx ( qpn_offset );
|
|
arbel_qp->recv.doorbell_idx = arbel_recv_doorbell_idx ( qpn_offset );
|
|
|
|
/* Create send and receive work queues */
|
|
if ( ( rc = arbel_create_send_wq ( &arbel_qp->send,
|
|
qp->send.num_wqes ) ) != 0 )
|
|
goto err_create_send_wq;
|
|
if ( ( rc = arbel_create_recv_wq ( &arbel_qp->recv,
|
|
qp->recv.num_wqes ) ) != 0 )
|
|
goto err_create_recv_wq;
|
|
|
|
/* Initialise doorbell records */
|
|
send_db_rec = &arbel->db_rec[arbel_qp->send.doorbell_idx].qp;
|
|
MLX_FILL_1 ( send_db_rec, 0, counter, 0 );
|
|
MLX_FILL_2 ( send_db_rec, 1,
|
|
res, ARBEL_UAR_RES_SQ,
|
|
qp_number, qp->qpn );
|
|
recv_db_rec = &arbel->db_rec[arbel_qp->recv.doorbell_idx].qp;
|
|
MLX_FILL_1 ( recv_db_rec, 0, counter, 0 );
|
|
MLX_FILL_2 ( recv_db_rec, 1,
|
|
res, ARBEL_UAR_RES_RQ,
|
|
qp_number, qp->qpn );
|
|
|
|
/* Hand queue over to hardware */
|
|
memset ( &qpctx, 0, sizeof ( qpctx ) );
|
|
MLX_FILL_3 ( &qpctx, 2,
|
|
qpc_eec_data.de, 1,
|
|
qpc_eec_data.pm_state, 0x03 /* Always 0x03 for UD */,
|
|
qpc_eec_data.st, ARBEL_ST_UD );
|
|
MLX_FILL_6 ( &qpctx, 4,
|
|
qpc_eec_data.mtu, ARBEL_MTU_2048,
|
|
qpc_eec_data.msg_max, 11 /* 2^11 = 2048 */,
|
|
qpc_eec_data.log_rq_size, fls ( qp->recv.num_wqes - 1 ),
|
|
qpc_eec_data.log_rq_stride,
|
|
( fls ( sizeof ( arbel_qp->recv.wqe[0] ) - 1 ) - 4 ),
|
|
qpc_eec_data.log_sq_size, fls ( qp->send.num_wqes - 1 ),
|
|
qpc_eec_data.log_sq_stride,
|
|
( fls ( sizeof ( arbel_qp->send.wqe[0] ) - 1 ) - 4 ) );
|
|
MLX_FILL_1 ( &qpctx, 5,
|
|
qpc_eec_data.usr_page, arbel->limits.reserved_uars );
|
|
MLX_FILL_1 ( &qpctx, 10, qpc_eec_data.primary_address_path.port_number,
|
|
PXE_IB_PORT );
|
|
MLX_FILL_1 ( &qpctx, 27, qpc_eec_data.pd, ARBEL_GLOBAL_PD );
|
|
MLX_FILL_1 ( &qpctx, 29, qpc_eec_data.wqe_lkey, arbel->reserved_lkey );
|
|
MLX_FILL_1 ( &qpctx, 30, qpc_eec_data.ssc, 1 );
|
|
MLX_FILL_1 ( &qpctx, 33, qpc_eec_data.cqn_snd, qp->send.cq->cqn );
|
|
MLX_FILL_1 ( &qpctx, 34, qpc_eec_data.snd_wqe_base_adr_l,
|
|
( virt_to_bus ( arbel_qp->send.wqe ) >> 6 ) );
|
|
MLX_FILL_1 ( &qpctx, 35, qpc_eec_data.snd_db_record_index,
|
|
arbel_qp->send.doorbell_idx );
|
|
MLX_FILL_1 ( &qpctx, 38, qpc_eec_data.rsc, 1 );
|
|
MLX_FILL_1 ( &qpctx, 41, qpc_eec_data.cqn_rcv, qp->recv.cq->cqn );
|
|
MLX_FILL_1 ( &qpctx, 42, qpc_eec_data.rcv_wqe_base_adr_l,
|
|
( virt_to_bus ( arbel_qp->recv.wqe ) >> 6 ) );
|
|
MLX_FILL_1 ( &qpctx, 43, qpc_eec_data.rcv_db_record_index,
|
|
arbel_qp->recv.doorbell_idx );
|
|
MLX_FILL_1 ( &qpctx, 44, qpc_eec_data.q_key, qp->qkey );
|
|
if ( ( rc = arbel_cmd_rst2init_qpee ( arbel, qp->qpn, &qpctx )) != 0 ){
|
|
DBGC ( arbel, "Arbel %p RST2INIT_QPEE failed: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
goto err_rst2init_qpee;
|
|
}
|
|
memset ( &qpctx, 0, sizeof ( qpctx ) );
|
|
MLX_FILL_2 ( &qpctx, 4,
|
|
qpc_eec_data.mtu, ARBEL_MTU_2048,
|
|
qpc_eec_data.msg_max, 11 /* 2^11 = 2048 */ );
|
|
if ( ( rc = arbel_cmd_init2rtr_qpee ( arbel, qp->qpn, &qpctx )) != 0 ){
|
|
DBGC ( arbel, "Arbel %p INIT2RTR_QPEE failed: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
goto err_init2rtr_qpee;
|
|
}
|
|
memset ( &qpctx, 0, sizeof ( qpctx ) );
|
|
if ( ( rc = arbel_cmd_rtr2rts_qpee ( arbel, qp->qpn, &qpctx ) ) != 0 ){
|
|
DBGC ( arbel, "Arbel %p RTR2RTS_QPEE failed: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
goto err_rtr2rts_qpee;
|
|
}
|
|
|
|
qp->dev_priv = arbel_qp;
|
|
return 0;
|
|
|
|
err_rtr2rts_qpee:
|
|
err_init2rtr_qpee:
|
|
arbel_cmd_2rst_qpee ( arbel, qp->qpn );
|
|
err_rst2init_qpee:
|
|
MLX_FILL_1 ( send_db_rec, 1, res, ARBEL_UAR_RES_NONE );
|
|
MLX_FILL_1 ( recv_db_rec, 1, res, ARBEL_UAR_RES_NONE );
|
|
free_dma ( arbel_qp->recv.wqe, arbel_qp->recv.wqe_size );
|
|
err_create_recv_wq:
|
|
free_dma ( arbel_qp->send.wqe, arbel_qp->send.wqe_size );
|
|
err_create_send_wq:
|
|
free ( arbel_qp );
|
|
err_arbel_qp:
|
|
arbel_free_qn_offset ( arbel->qp_inuse, qpn_offset );
|
|
err_qpn_offset:
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Destroy queue pair
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v qp Queue pair
|
|
*/
|
|
static void arbel_destroy_qp ( struct ib_device *ibdev,
|
|
struct ib_queue_pair *qp ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbel_queue_pair *arbel_qp = qp->dev_priv;
|
|
struct arbelprm_qp_db_record *send_db_rec;
|
|
struct arbelprm_qp_db_record *recv_db_rec;
|
|
int qpn_offset;
|
|
int rc;
|
|
|
|
/* Take ownership back from hardware */
|
|
if ( ( rc = arbel_cmd_2rst_qpee ( arbel, qp->qpn ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p FATAL 2RST_QPEE failed on QPN %#lx: "
|
|
"%s\n", arbel, qp->qpn, strerror ( rc ) );
|
|
/* Leak memory and return; at least we avoid corruption */
|
|
return;
|
|
}
|
|
|
|
/* Clear doorbell records */
|
|
send_db_rec = &arbel->db_rec[arbel_qp->send.doorbell_idx].qp;
|
|
recv_db_rec = &arbel->db_rec[arbel_qp->recv.doorbell_idx].qp;
|
|
MLX_FILL_1 ( send_db_rec, 1, res, ARBEL_UAR_RES_NONE );
|
|
MLX_FILL_1 ( recv_db_rec, 1, res, ARBEL_UAR_RES_NONE );
|
|
|
|
/* Free memory */
|
|
free_dma ( arbel_qp->send.wqe, arbel_qp->send.wqe_size );
|
|
free_dma ( arbel_qp->recv.wqe, arbel_qp->recv.wqe_size );
|
|
free ( arbel_qp );
|
|
|
|
/* Mark queue number as free */
|
|
qpn_offset = ( qp->qpn - ARBEL_QPN_BASE - arbel->limits.reserved_qps );
|
|
arbel_free_qn_offset ( arbel->qp_inuse, qpn_offset );
|
|
|
|
qp->dev_priv = NULL;
|
|
}
|
|
|
|
/***************************************************************************
|
|
*
|
|
* Work request operations
|
|
*
|
|
***************************************************************************
|
|
*/
|
|
|
|
/**
|
|
* Ring doorbell register in UAR
|
|
*
|
|
* @v arbel Arbel device
|
|
* @v db_reg Doorbell register structure
|
|
* @v offset Address of doorbell
|
|
*/
|
|
static void arbel_ring_doorbell ( struct arbel *arbel,
|
|
union arbelprm_doorbell_register *db_reg,
|
|
unsigned int offset ) {
|
|
|
|
DBG ( "arbel_ring_doorbell %08lx:%08lx to %lx\n",
|
|
db_reg->dword[0], db_reg->dword[1],
|
|
virt_to_phys ( arbel->uar + offset ) );
|
|
|
|
barrier();
|
|
writel ( db_reg->dword[0], ( arbel->uar + offset + 0 ) );
|
|
barrier();
|
|
writel ( db_reg->dword[1], ( arbel->uar + offset + 4 ) );
|
|
}
|
|
|
|
/**
|
|
* Post send work queue entry
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v qp Queue pair
|
|
* @v av Address vector
|
|
* @v iobuf I/O buffer
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_post_send ( struct ib_device *ibdev,
|
|
struct ib_queue_pair *qp,
|
|
struct ib_address_vector *av,
|
|
struct io_buffer *iobuf ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbel_queue_pair *arbel_qp = qp->dev_priv;
|
|
struct ib_work_queue *wq = &qp->send;
|
|
struct arbel_send_work_queue *arbel_send_wq = &arbel_qp->send;
|
|
struct arbelprm_ud_send_wqe *prev_wqe;
|
|
struct arbelprm_ud_send_wqe *wqe;
|
|
struct arbelprm_qp_db_record *qp_db_rec;
|
|
union arbelprm_doorbell_register db_reg;
|
|
const struct ib_gid *gid;
|
|
unsigned int wqe_idx_mask;
|
|
size_t nds;
|
|
|
|
/* Allocate work queue entry */
|
|
wqe_idx_mask = ( wq->num_wqes - 1 );
|
|
if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) {
|
|
DBGC ( arbel, "Arbel %p send queue full", arbel );
|
|
return -ENOBUFS;
|
|
}
|
|
wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf;
|
|
prev_wqe = &arbel_send_wq->wqe[(wq->next_idx - 1) & wqe_idx_mask].ud;
|
|
wqe = &arbel_send_wq->wqe[wq->next_idx & wqe_idx_mask].ud;
|
|
|
|
/* Construct work queue entry */
|
|
MLX_FILL_1 ( &wqe->next, 1, always1, 1 );
|
|
memset ( &wqe->ctrl, 0, sizeof ( wqe->ctrl ) );
|
|
MLX_FILL_1 ( &wqe->ctrl, 0, always1, 1 );
|
|
memset ( &wqe->ud, 0, sizeof ( wqe->ud ) );
|
|
MLX_FILL_2 ( &wqe->ud, 0,
|
|
ud_address_vector.pd, ARBEL_GLOBAL_PD,
|
|
ud_address_vector.port_number, PXE_IB_PORT );
|
|
MLX_FILL_2 ( &wqe->ud, 1,
|
|
ud_address_vector.rlid, av->dlid,
|
|
ud_address_vector.g, av->gid_present );
|
|
MLX_FILL_2 ( &wqe->ud, 2,
|
|
ud_address_vector.max_stat_rate,
|
|
( ( av->rate >= 3 ) ? 0 : 1 ),
|
|
ud_address_vector.msg, 3 );
|
|
MLX_FILL_1 ( &wqe->ud, 3, ud_address_vector.sl, av->sl );
|
|
gid = ( av->gid_present ? &av->gid : &arbel_no_gid );
|
|
memcpy ( &wqe->ud.u.dwords[4], gid, sizeof ( *gid ) );
|
|
MLX_FILL_1 ( &wqe->ud, 8, destination_qp, av->dest_qp );
|
|
MLX_FILL_1 ( &wqe->ud, 9, q_key, av->qkey );
|
|
MLX_FILL_1 ( &wqe->data[0], 0, byte_count, iob_len ( iobuf ) );
|
|
MLX_FILL_1 ( &wqe->data[0], 1, l_key, arbel->reserved_lkey );
|
|
MLX_FILL_1 ( &wqe->data[0], 3,
|
|
local_address_l, virt_to_bus ( iobuf->data ) );
|
|
|
|
/* Update previous work queue entry's "next" field */
|
|
nds = ( ( offsetof ( typeof ( *wqe ), data ) +
|
|
sizeof ( wqe->data[0] ) ) >> 4 );
|
|
MLX_SET ( &prev_wqe->next, nopcode, ARBEL_OPCODE_SEND );
|
|
MLX_FILL_3 ( &prev_wqe->next, 1,
|
|
nds, nds,
|
|
f, 1,
|
|
always1, 1 );
|
|
|
|
/* Update doorbell record */
|
|
barrier();
|
|
qp_db_rec = &arbel->db_rec[arbel_send_wq->doorbell_idx].qp;
|
|
MLX_FILL_1 ( qp_db_rec, 0,
|
|
counter, ( ( wq->next_idx + 1 ) & 0xffff ) );
|
|
|
|
/* Ring doorbell register */
|
|
MLX_FILL_4 ( &db_reg.send, 0,
|
|
nopcode, ARBEL_OPCODE_SEND,
|
|
f, 1,
|
|
wqe_counter, ( wq->next_idx & 0xffff ),
|
|
wqe_cnt, 1 );
|
|
MLX_FILL_2 ( &db_reg.send, 1,
|
|
nds, nds,
|
|
qpn, qp->qpn );
|
|
arbel_ring_doorbell ( arbel, &db_reg, POST_SND_OFFSET );
|
|
|
|
/* Update work queue's index */
|
|
wq->next_idx++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Post receive work queue entry
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v qp Queue pair
|
|
* @v iobuf I/O buffer
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_post_recv ( struct ib_device *ibdev,
|
|
struct ib_queue_pair *qp,
|
|
struct io_buffer *iobuf ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbel_queue_pair *arbel_qp = qp->dev_priv;
|
|
struct ib_work_queue *wq = &qp->recv;
|
|
struct arbel_recv_work_queue *arbel_recv_wq = &arbel_qp->recv;
|
|
struct arbelprm_recv_wqe *wqe;
|
|
union arbelprm_doorbell_record *db_rec;
|
|
unsigned int wqe_idx_mask;
|
|
|
|
/* Allocate work queue entry */
|
|
wqe_idx_mask = ( wq->num_wqes - 1 );
|
|
if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) {
|
|
DBGC ( arbel, "Arbel %p receive queue full", arbel );
|
|
return -ENOBUFS;
|
|
}
|
|
wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf;
|
|
wqe = &arbel_recv_wq->wqe[wq->next_idx & wqe_idx_mask].recv;
|
|
|
|
/* Construct work queue entry */
|
|
MLX_FILL_1 ( &wqe->data[0], 0, byte_count, iob_tailroom ( iobuf ) );
|
|
MLX_FILL_1 ( &wqe->data[0], 1, l_key, arbel->reserved_lkey );
|
|
MLX_FILL_1 ( &wqe->data[0], 3,
|
|
local_address_l, virt_to_bus ( iobuf->data ) );
|
|
|
|
/* Update doorbell record */
|
|
barrier();
|
|
db_rec = &arbel->db_rec[arbel_recv_wq->doorbell_idx];
|
|
MLX_FILL_1 ( &db_rec->qp, 0,
|
|
counter, ( ( wq->next_idx + 1 ) & 0xffff ) );
|
|
|
|
/* Update work queue's index */
|
|
wq->next_idx++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Handle completion
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v cq Completion queue
|
|
* @v cqe Hardware completion queue entry
|
|
* @v complete_send Send completion handler
|
|
* @v complete_recv Receive completion handler
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_complete ( struct ib_device *ibdev,
|
|
struct ib_completion_queue *cq,
|
|
union arbelprm_completion_entry *cqe,
|
|
ib_completer_t complete_send,
|
|
ib_completer_t complete_recv ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct ib_completion completion;
|
|
struct ib_work_queue *wq;
|
|
struct ib_queue_pair *qp;
|
|
struct arbel_queue_pair *arbel_qp;
|
|
struct arbel_send_work_queue *arbel_send_wq;
|
|
struct arbel_recv_work_queue *arbel_recv_wq;
|
|
struct io_buffer *iobuf;
|
|
ib_completer_t complete;
|
|
unsigned int opcode;
|
|
unsigned long qpn;
|
|
int is_send;
|
|
unsigned long wqe_adr;
|
|
unsigned int wqe_idx;
|
|
int rc = 0;
|
|
|
|
/* Parse completion */
|
|
memset ( &completion, 0, sizeof ( completion ) );
|
|
completion.len = MLX_GET ( &cqe->normal, byte_cnt );
|
|
qpn = MLX_GET ( &cqe->normal, my_qpn );
|
|
is_send = MLX_GET ( &cqe->normal, s );
|
|
wqe_adr = ( MLX_GET ( &cqe->normal, wqe_adr ) << 6 );
|
|
opcode = MLX_GET ( &cqe->normal, opcode );
|
|
if ( opcode >= ARBEL_OPCODE_RECV_ERROR ) {
|
|
/* "s" field is not valid for error opcodes */
|
|
is_send = ( opcode == ARBEL_OPCODE_SEND_ERROR );
|
|
completion.syndrome = MLX_GET ( &cqe->error, syndrome );
|
|
DBGC ( arbel, "Arbel %p CPN %lx syndrome %x vendor %lx\n",
|
|
arbel, cq->cqn, completion.syndrome,
|
|
MLX_GET ( &cqe->error, vendor_code ) );
|
|
rc = -EIO;
|
|
/* Don't return immediately; propagate error to completer */
|
|
}
|
|
|
|
/* Identify work queue */
|
|
wq = ib_find_wq ( cq, qpn, is_send );
|
|
if ( ! wq ) {
|
|
DBGC ( arbel, "Arbel %p CQN %lx unknown %s QPN %lx\n",
|
|
arbel, cq->cqn, ( is_send ? "send" : "recv" ), qpn );
|
|
return -EIO;
|
|
}
|
|
qp = wq->qp;
|
|
arbel_qp = qp->dev_priv;
|
|
|
|
/* Identify work queue entry index */
|
|
if ( is_send ) {
|
|
arbel_send_wq = &arbel_qp->send;
|
|
wqe_idx = ( ( wqe_adr - virt_to_bus ( arbel_send_wq->wqe ) ) /
|
|
sizeof ( arbel_send_wq->wqe[0] ) );
|
|
} else {
|
|
arbel_recv_wq = &arbel_qp->recv;
|
|
wqe_idx = ( ( wqe_adr - virt_to_bus ( arbel_recv_wq->wqe ) ) /
|
|
sizeof ( arbel_recv_wq->wqe[0] ) );
|
|
}
|
|
|
|
/* Identify I/O buffer */
|
|
iobuf = wq->iobufs[wqe_idx];
|
|
if ( ! iobuf ) {
|
|
DBGC ( arbel, "Arbel %p CQN %lx QPN %lx empty WQE %x\n",
|
|
arbel, cq->cqn, qpn, wqe_idx );
|
|
return -EIO;
|
|
}
|
|
wq->iobufs[wqe_idx] = NULL;
|
|
|
|
/* Pass off to caller's completion handler */
|
|
complete = ( is_send ? complete_send : complete_recv );
|
|
complete ( ibdev, qp, &completion, iobuf );
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Drain event queue
|
|
*
|
|
* @v arbel Arbel device
|
|
*/
|
|
static void arbel_drain_eq ( struct arbel *arbel ) {
|
|
#warning "drain the event queue"
|
|
}
|
|
|
|
/**
|
|
* Poll completion queue
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v cq Completion queue
|
|
* @v complete_send Send completion handler
|
|
* @v complete_recv Receive completion handler
|
|
*/
|
|
static void arbel_poll_cq ( struct ib_device *ibdev,
|
|
struct ib_completion_queue *cq,
|
|
ib_completer_t complete_send,
|
|
ib_completer_t complete_recv ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbel_completion_queue *arbel_cq = cq->dev_priv;
|
|
struct arbelprm_cq_ci_db_record *ci_db_rec;
|
|
union arbelprm_completion_entry *cqe;
|
|
unsigned int cqe_idx_mask;
|
|
int rc;
|
|
|
|
/* Drain the event queue */
|
|
arbel_drain_eq ( arbel );
|
|
|
|
while ( 1 ) {
|
|
/* Look for completion entry */
|
|
cqe_idx_mask = ( cq->num_cqes - 1 );
|
|
cqe = &arbel_cq->cqe[cq->next_idx & cqe_idx_mask];
|
|
if ( MLX_GET ( &cqe->normal, owner ) != 0 ) {
|
|
/* Entry still owned by hardware; end of poll */
|
|
break;
|
|
}
|
|
|
|
/* Handle completion */
|
|
if ( ( rc = arbel_complete ( ibdev, cq, cqe, complete_send,
|
|
complete_recv ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p failed to complete: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
DBGC_HD ( arbel, cqe, sizeof ( *cqe ) );
|
|
}
|
|
|
|
/* Return ownership to hardware */
|
|
MLX_FILL_1 ( &cqe->normal, 7, owner, 1 );
|
|
barrier();
|
|
/* Update completion queue's index */
|
|
cq->next_idx++;
|
|
/* Update doorbell record */
|
|
ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci;
|
|
MLX_FILL_1 ( ci_db_rec, 0,
|
|
counter, ( cq->next_idx & 0xffffffffUL ) );
|
|
}
|
|
}
|
|
|
|
/***************************************************************************
|
|
*
|
|
* Multicast group operations
|
|
*
|
|
***************************************************************************
|
|
*/
|
|
|
|
/**
|
|
* Attach to multicast group
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v qp Queue pair
|
|
* @v gid Multicast GID
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_mcast_attach ( struct ib_device *ibdev,
|
|
struct ib_queue_pair *qp,
|
|
struct ib_gid *gid ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbelprm_mgm_hash hash;
|
|
struct arbelprm_mgm_entry mgm;
|
|
unsigned int index;
|
|
int rc;
|
|
|
|
/* Generate hash table index */
|
|
if ( ( rc = arbel_cmd_mgid_hash ( arbel, gid, &hash ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not hash GID: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
return rc;
|
|
}
|
|
index = MLX_GET ( &hash, hash );
|
|
|
|
/* Check for existing hash table entry */
|
|
if ( ( rc = arbel_cmd_read_mgm ( arbel, index, &mgm ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not read MGM %#x: %s\n",
|
|
arbel, index, strerror ( rc ) );
|
|
return rc;
|
|
}
|
|
if ( MLX_GET ( &mgm, mgmqp_0.qi ) != 0 ) {
|
|
/* FIXME: this implementation allows only a single QP
|
|
* per multicast group, and doesn't handle hash
|
|
* collisions. Sufficient for IPoIB but may need to
|
|
* be extended in future.
|
|
*/
|
|
DBGC ( arbel, "Arbel %p MGID index %#x already in use\n",
|
|
arbel, index );
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Update hash table entry */
|
|
MLX_FILL_2 ( &mgm, 8,
|
|
mgmqp_0.qpn_i, qp->qpn,
|
|
mgmqp_0.qi, 1 );
|
|
memcpy ( &mgm.u.dwords[4], gid, sizeof ( *gid ) );
|
|
if ( ( rc = arbel_cmd_write_mgm ( arbel, index, &mgm ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not write MGM %#x: %s\n",
|
|
arbel, index, strerror ( rc ) );
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Detach from multicast group
|
|
*
|
|
* @v ibdev Infiniband device
|
|
* @v qp Queue pair
|
|
* @v gid Multicast GID
|
|
*/
|
|
static void arbel_mcast_detach ( struct ib_device *ibdev,
|
|
struct ib_queue_pair *qp __unused,
|
|
struct ib_gid *gid ) {
|
|
struct arbel *arbel = ibdev->dev_priv;
|
|
struct arbelprm_mgm_hash hash;
|
|
struct arbelprm_mgm_entry mgm;
|
|
unsigned int index;
|
|
int rc;
|
|
|
|
/* Generate hash table index */
|
|
if ( ( rc = arbel_cmd_mgid_hash ( arbel, gid, &hash ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not hash GID: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
return;
|
|
}
|
|
index = MLX_GET ( &hash, hash );
|
|
|
|
/* Clear hash table entry */
|
|
memset ( &mgm, 0, sizeof ( mgm ) );
|
|
if ( ( rc = arbel_cmd_write_mgm ( arbel, index, &mgm ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not write MGM %#x: %s\n",
|
|
arbel, index, strerror ( rc ) );
|
|
return;
|
|
}
|
|
}
|
|
|
|
/** Arbel Infiniband operations */
|
|
static struct ib_device_operations arbel_ib_operations = {
|
|
.create_cq = arbel_create_cq,
|
|
.destroy_cq = arbel_destroy_cq,
|
|
.create_qp = arbel_create_qp,
|
|
.destroy_qp = arbel_destroy_qp,
|
|
.post_send = arbel_post_send,
|
|
.post_recv = arbel_post_recv,
|
|
.poll_cq = arbel_poll_cq,
|
|
.mcast_attach = arbel_mcast_attach,
|
|
.mcast_detach = arbel_mcast_detach,
|
|
};
|
|
|
|
|
|
static int arbel_mad_ifc ( struct arbel *arbel,
|
|
union arbelprm_mad *mad ) {
|
|
struct ib_mad_hdr *hdr = &mad->mad.mad_hdr;
|
|
int rc;
|
|
|
|
hdr->base_version = IB_MGMT_BASE_VERSION;
|
|
if ( ( rc = arbel_cmd_mad_ifc ( arbel, mad ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not issue MAD IFC: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
return rc;
|
|
}
|
|
if ( hdr->status != 0 ) {
|
|
DBGC ( arbel, "Arbel %p MAD IFC status %04x\n",
|
|
arbel, ntohs ( hdr->status ) );
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int arbel_get_port_info ( struct arbel *arbel,
|
|
struct ib_mad_port_info *port_info ) {
|
|
union arbelprm_mad mad;
|
|
struct ib_mad_hdr *hdr = &mad.mad.mad_hdr;
|
|
int rc;
|
|
|
|
memset ( &mad, 0, sizeof ( mad ) );
|
|
hdr->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
|
|
hdr->class_version = 1;
|
|
hdr->method = IB_MGMT_METHOD_GET;
|
|
hdr->attr_id = htons ( IB_SMP_ATTR_PORT_INFO );
|
|
hdr->attr_mod = htonl ( PXE_IB_PORT );
|
|
if ( ( rc = arbel_mad_ifc ( arbel, &mad ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not get port info: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
return rc;
|
|
}
|
|
memcpy ( port_info, &mad.mad.port_info, sizeof ( *port_info ) );
|
|
return 0;
|
|
}
|
|
|
|
static int arbel_get_guid_info ( struct arbel *arbel,
|
|
struct ib_mad_guid_info *guid_info ) {
|
|
union arbelprm_mad mad;
|
|
struct ib_mad_hdr *hdr = &mad.mad.mad_hdr;
|
|
int rc;
|
|
|
|
memset ( &mad, 0, sizeof ( mad ) );
|
|
hdr->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
|
|
hdr->class_version = 1;
|
|
hdr->method = IB_MGMT_METHOD_GET;
|
|
hdr->attr_id = htons ( IB_SMP_ATTR_GUID_INFO );
|
|
if ( ( rc = arbel_mad_ifc ( arbel, &mad ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not get GUID info: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
return rc;
|
|
}
|
|
memcpy ( guid_info, &mad.mad.guid_info, sizeof ( *guid_info ) );
|
|
return 0;
|
|
}
|
|
|
|
static int arbel_get_port_gid ( struct arbel *arbel, struct ib_gid *gid ) {
|
|
struct ib_mad_port_info port_info;
|
|
struct ib_mad_guid_info guid_info;
|
|
int rc;
|
|
|
|
if ( ( rc = arbel_get_port_info ( arbel, &port_info ) ) != 0 )
|
|
return rc;
|
|
if ( ( rc = arbel_get_guid_info ( arbel, &guid_info ) ) != 0 )
|
|
return rc;
|
|
memcpy ( &gid->bytes[0], port_info.gid_prefix, 8 );
|
|
memcpy ( &gid->bytes[8], guid_info.gid_local, 8 );
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/**
|
|
* Probe PCI device
|
|
*
|
|
* @v pci PCI device
|
|
* @v id PCI ID
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_probe ( struct pci_device *pci,
|
|
const struct pci_device_id *id __unused ) {
|
|
struct net_device *netdev;
|
|
struct arbelprm_query_dev_lim dev_lim;
|
|
struct arbel *arbel = &static_arbel;
|
|
struct mlx_nic *mlx;
|
|
struct ib_mac *mac;
|
|
udqp_t qph;
|
|
int rc;
|
|
|
|
/* Allocate net device */
|
|
netdev = alloc_ibdev ( sizeof ( *mlx ) );
|
|
if ( ! netdev )
|
|
return -ENOMEM;
|
|
netdev_init ( netdev, &mlx_operations );
|
|
mlx = netdev->priv;
|
|
pci_set_drvdata ( pci, netdev );
|
|
netdev->dev = &pci->dev;
|
|
memset ( mlx, 0, sizeof ( *mlx ) );
|
|
|
|
/* Fix up PCI device */
|
|
adjust_pci_device ( pci );
|
|
|
|
/* Initialise hardware */
|
|
if ( ( rc = ib_driver_init ( pci, &qph ) ) != 0 )
|
|
goto err_ipoib_init;
|
|
mlx->bcast_av = ib_data.bcast_av;
|
|
#if ! CREATE_OWN
|
|
mlx->ipoib_qph = qph;
|
|
mlx->snd_cqh = ib_data.ipoib_snd_cq;
|
|
mlx->rcv_cqh = ib_data.ipoib_rcv_cq;
|
|
mac = ( ( struct ib_mac * ) netdev->ll_addr );
|
|
mac->qpn = htonl ( ib_get_qpn ( mlx->ipoib_qph ) );
|
|
memcpy ( &mac->gid, ib_data.port_gid.raw, sizeof ( mac->gid ) );
|
|
#endif
|
|
|
|
/* Hack up IB structures */
|
|
arbel->config = memfree_pci_dev.cr_space;
|
|
arbel->mailbox_in = dev_buffers_p->inprm_buf;
|
|
arbel->mailbox_out = dev_buffers_p->outprm_buf;
|
|
arbel->uar = memfree_pci_dev.uar;
|
|
arbel->db_rec = dev_ib_data.uar_context_base;
|
|
arbel->reserved_lkey = dev_ib_data.mkey;
|
|
arbel->eqn = dev_ib_data.eq.eqn;
|
|
#if ! CREATE_OWN
|
|
static_arbel_ipoib_qp.send.wqe =
|
|
( ( struct udqp_st * ) qph )->snd_wq;
|
|
static_arbel_ipoib_qp.recv.wqe =
|
|
( ( struct udqp_st * ) qph )->rcv_wq;
|
|
static_arbel_ipoib_send_cq.cqe =
|
|
( ( struct cq_st * ) ib_data.ipoib_snd_cq )->cq_buf;
|
|
static_arbel_ipoib_recv_cq.cqe =
|
|
( ( struct cq_st * ) ib_data.ipoib_rcv_cq )->cq_buf;
|
|
static_ipoib_qp.qpn = ib_get_qpn ( qph );
|
|
static_ipoib_qp.owner_priv = netdev;
|
|
list_add ( &static_ipoib_qp.send.list,
|
|
&static_ipoib_send_cq.work_queues );
|
|
list_add ( &static_ipoib_qp.recv.list,
|
|
&static_ipoib_recv_cq.work_queues );
|
|
#endif
|
|
static_ibdev.op = &arbel_ib_operations;
|
|
|
|
/* Get device limits */
|
|
if ( ( rc = arbel_cmd_query_dev_lim ( arbel, &dev_lim ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not get device limits: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
goto err_query_dev_lim;
|
|
}
|
|
arbel->limits.reserved_uars = MLX_GET ( &dev_lim, num_rsvd_uars );
|
|
arbel->limits.reserved_cqs =
|
|
( 1 << MLX_GET ( &dev_lim, log2_rsvd_cqs ) );
|
|
arbel->limits.reserved_qps =
|
|
( 1 << MLX_GET ( &dev_lim, log2_rsvd_qps ) );
|
|
|
|
#if CREATE_OWN
|
|
struct ib_device *ibdev = &static_ibdev;
|
|
mlx->own_send_cq = ib_create_cq ( ibdev, 32 );
|
|
if ( ! mlx->own_send_cq ) {
|
|
DBG ( "Could not create send CQ\n" );
|
|
return -EIO;
|
|
}
|
|
#if 0
|
|
mlx->own_recv_cq = ib_create_cq ( ibdev, 32 );
|
|
if ( ! mlx->own_recv_cq ) {
|
|
DBG ( "Could not create send CQ\n" );
|
|
return -EIO;
|
|
}
|
|
#endif
|
|
mlx->own_qp = ib_create_qp ( ibdev, NUM_IPOIB_SND_WQES,
|
|
mlx->own_send_cq, NUM_IPOIB_RCV_WQES,
|
|
//mlx->own_recv_cq, ipoib_qkey );
|
|
mlx->own_send_cq, ipoib_qkey );
|
|
if ( ! mlx->own_qp ) {
|
|
DBG ( "Could not create QP\n" );
|
|
return -EIO;
|
|
}
|
|
mlx->own_qp->owner_priv = netdev;
|
|
struct ib_gid *bcast_gid = ( struct ib_gid * ) &ib_data.bcast_gid;
|
|
if ( ( rc = ib_mcast_attach ( ibdev, mlx->own_qp,
|
|
bcast_gid ) ) != 0 ) {
|
|
DBG ( "Could not attach to broadcast GID: %s\n",
|
|
strerror ( rc ) );
|
|
return rc;
|
|
}
|
|
|
|
if ( ( rc = arbel_get_port_gid ( arbel, &ibdev->port_gid ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not determine port GID: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
return rc;
|
|
}
|
|
|
|
DBG ( "Port GID:\n" );
|
|
DBG_HD ( &ibdev->port_gid, sizeof ( ibdev->port_gid ) );
|
|
|
|
|
|
mac = ( ( struct ib_mac * ) netdev->ll_addr );
|
|
mac->qpn = htonl ( mlx->own_qp->qpn );
|
|
memcpy ( &mac->gid, &ibdev->port_gid, sizeof ( mac->gid ) );
|
|
#endif
|
|
|
|
#if 0
|
|
DBG ( "MADS SND CQN = %#lx\n", dev_ib_data.mads_qp.snd_cq.cqn );
|
|
struct ib_completion_queue *test_cq;
|
|
test_cq = ib_create_cq ( &static_ibdev, 32 );
|
|
if ( test_cq ) {
|
|
DBG ( "Woot: create_cq() passed!\n" );
|
|
}
|
|
#endif
|
|
|
|
ibdev->dev = &pci->dev;
|
|
|
|
|
|
struct ud_av_st *bcast_av = mlx->bcast_av;
|
|
struct arbelprm_ud_address_vector *bav =
|
|
( struct arbelprm_ud_address_vector * ) &bcast_av->av;
|
|
struct ib_address_vector *av = &hack_ipoib_bcast_av;
|
|
av->dest_qp = bcast_av->dest_qp;
|
|
av->qkey = bcast_av->qkey;
|
|
av->dlid = MLX_GET ( bav, rlid );
|
|
av->rate = ( MLX_GET ( bav, max_stat_rate ) ? 1 : 4 );
|
|
av->sl = MLX_GET ( bav, sl );
|
|
av->gid_present = 1;
|
|
memcpy ( &av->gid, ( ( void * ) bav ) + 16, 16 );
|
|
|
|
|
|
/* Register network device */
|
|
if ( ( rc = register_netdev ( netdev ) ) != 0 )
|
|
goto err_register_netdev;
|
|
|
|
return 0;
|
|
|
|
err_query_dev_lim:
|
|
err_register_netdev:
|
|
err_ipoib_init:
|
|
ib_driver_close ( 0 );
|
|
netdev_nullify ( netdev );
|
|
netdev_put ( netdev );
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Remove PCI device
|
|
*
|
|
* @v pci PCI device
|
|
*/
|
|
static void arbel_remove ( struct pci_device *pci ) {
|
|
struct net_device *netdev = pci_get_drvdata ( pci );
|
|
|
|
unregister_netdev ( netdev );
|
|
ib_driver_close ( 0 );
|
|
netdev_nullify ( netdev );
|
|
netdev_put ( netdev );
|
|
}
|
|
|
|
#endif /* 0 */
|
|
|
|
|
|
|
|
/**
|
|
* Probe PCI device
|
|
*
|
|
* @v pci PCI device
|
|
* @v id PCI ID
|
|
* @ret rc Return status code
|
|
*/
|
|
static int arbel_probe ( struct pci_device *pci,
|
|
const struct pci_device_id *id __unused ) {
|
|
struct ib_device *ibdev;
|
|
struct arbelprm_query_dev_lim dev_lim;
|
|
struct arbel *arbel;
|
|
udqp_t qph;
|
|
int rc;
|
|
|
|
/* Allocate Infiniband device */
|
|
ibdev = alloc_ibdev ( sizeof ( *arbel ) );
|
|
if ( ! ibdev )
|
|
return -ENOMEM;
|
|
ibdev->op = &arbel_ib_operations;
|
|
pci_set_drvdata ( pci, ibdev );
|
|
ibdev->dev = &pci->dev;
|
|
arbel = ibdev->dev_priv;
|
|
memset ( arbel, 0, sizeof ( *arbel ) );
|
|
|
|
/* Fix up PCI device */
|
|
adjust_pci_device ( pci );
|
|
|
|
/* Initialise hardware */
|
|
if ( ( rc = ib_driver_init ( pci, &qph ) ) != 0 )
|
|
goto err_ib_driver_init;
|
|
|
|
/* Hack up IB structures */
|
|
arbel->config = memfree_pci_dev.cr_space;
|
|
arbel->mailbox_in = dev_buffers_p->inprm_buf;
|
|
arbel->mailbox_out = dev_buffers_p->outprm_buf;
|
|
arbel->uar = memfree_pci_dev.uar;
|
|
arbel->db_rec = dev_ib_data.uar_context_base;
|
|
arbel->reserved_lkey = dev_ib_data.mkey;
|
|
arbel->eqn = dev_ib_data.eq.eqn;
|
|
|
|
/* Get device limits */
|
|
if ( ( rc = arbel_cmd_query_dev_lim ( arbel, &dev_lim ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not get device limits: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
goto err_query_dev_lim;
|
|
}
|
|
arbel->limits.reserved_uars = MLX_GET ( &dev_lim, num_rsvd_uars );
|
|
arbel->limits.reserved_cqs =
|
|
( 1 << MLX_GET ( &dev_lim, log2_rsvd_cqs ) );
|
|
arbel->limits.reserved_qps =
|
|
( 1 << MLX_GET ( &dev_lim, log2_rsvd_qps ) );
|
|
|
|
/* Get port GID */
|
|
if ( ( rc = arbel_get_port_gid ( arbel, &ibdev->port_gid ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not determine port GID: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
goto err_get_port_gid;
|
|
}
|
|
|
|
struct ud_av_st *bcast_av = ib_data.bcast_av;
|
|
struct arbelprm_ud_address_vector *bav =
|
|
( struct arbelprm_ud_address_vector * ) &bcast_av->av;
|
|
struct ib_address_vector *av = &hack_ipoib_bcast_av;
|
|
av->dest_qp = bcast_av->dest_qp;
|
|
av->qkey = bcast_av->qkey;
|
|
av->dlid = MLX_GET ( bav, rlid );
|
|
av->rate = ( MLX_GET ( bav, max_stat_rate ) ? 1 : 4 );
|
|
av->sl = MLX_GET ( bav, sl );
|
|
av->gid_present = 1;
|
|
memcpy ( &av->gid, ( ( void * ) bav ) + 16, 16 );
|
|
|
|
memcpy ( &ibdev->broadcast_gid, &ib_data.bcast_gid, 16 );
|
|
|
|
/* Add IPoIB device */
|
|
if ( ( rc = ipoib_probe ( ibdev ) ) != 0 ) {
|
|
DBGC ( arbel, "Arbel %p could not add IPoIB device: %s\n",
|
|
arbel, strerror ( rc ) );
|
|
goto err_ipoib_probe;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_ipoib_probe:
|
|
err_get_port_gid:
|
|
err_query_dev_lim:
|
|
ib_driver_close ( 0 );
|
|
err_ib_driver_init:
|
|
free_ibdev ( ibdev );
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Remove PCI device
|
|
*
|
|
* @v pci PCI device
|
|
*/
|
|
static void arbel_remove ( struct pci_device *pci ) {
|
|
struct ib_device *ibdev = pci_get_drvdata ( pci );
|
|
|
|
ipoib_remove ( ibdev );
|
|
ib_driver_close ( 0 );
|
|
}
|
|
|
|
static struct pci_device_id arbel_nics[] = {
|
|
PCI_ROM ( 0x15b3, 0x6282, "MT25218", "MT25218 HCA driver" ),
|
|
PCI_ROM ( 0x15b3, 0x6274, "MT25204", "MT25204 HCA driver" ),
|
|
};
|
|
|
|
struct pci_driver arbel_driver __pci_driver = {
|
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.ids = arbel_nics,
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.id_count = ( sizeof ( arbel_nics ) / sizeof ( arbel_nics[0] ) ),
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.probe = arbel_probe,
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.remove = arbel_remove,
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};
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